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Rubber ball is one of the special equipment used with vibration, so the world is known as the vibrating screen rubber ball, rubber elastic ball, rubber bouncing ball. The reason why it can be called the bouncing ball, is because the rubber ball itself has good elastic performance, can be in the middle of the vibrating screen screen ring jumping, and constantly # hit the net hole. The resulting action force can be attached to the net material mass down. Therefore, the main role of rubber ball is to clean up the screen and sieve adhesion of the material, improve the screening efficiency of the material, avoid material waste and mesh plugging, improve the output of products. At present, the vibrating screen rubber ball for such as food, medicine, mining, gold and other industries in the cleaning effect of viscous materials is very good, so the application range is wide. But in the process of use, it is also necessary to inject the density and proportion of the rubber ball on each screening equipment. If the rubber ball is too much, it may not only cause the loss of the equipment, but also pollute the material.
Rubber ball is one of the special equipment used with vibration, so the world is known as the vibrating screen rubber ball, rubber elastic ball, rubber bouncing ball. The reason why it can be called the bouncing ball, is because the rubber ball itself has good elastic performance, can be in the middle of the vibrating screen screen ring jumping, and constantly # hit the net hole. The resulting action force can be attached to the net material mass down. Therefore, the main role of rubber ball is to clean up the screen and sieve adhesion of the material, improve the screening efficiency of the material, avoid material waste and mesh plugging, improve the output of products. At present, the vibrating screen rubber ball for such as food, medicine, mining, gold and other industries in the cleaning effect of viscous materials is very good, so the application range is wide. But in the process of use, it is also necessary to inject the density and proportion of the rubber ball on each screening equipment. If the rubber ball is too much, it may not only cause the loss of the equipment, but also pollute the material.
The butterfly valve (English: butter flyvalve) refers to the closing part (disc or butterfly plate) is a disc, revolving around the valve shaft to achieve the opening and closing of a valve, mainly used in the pipeline to cut off and throttle. Butterfly valve opening and closing parts is a disc shaped butterfly plate, in the valve body around its own axis rotation, so as to achieve the purpose of opening and closing or adjustment. Butterfly valve fully open to fully closed is usually less than 90° butterfly valve and butterfly rod itself has no self-locking ability, in order to the positioning of the butterfly plate, to install worm gear reducer on the valve stem. Using worm gear domain speed device, not only can make the butterfly plate with self-locking ability, make the butterfly plate stop in any position, but also can change the valve performance. The characteristics of the industrial butterfly valve can withstand high temperature, the applicable pressure range is higher, the nominal diameter of the valve is large, the valve body is made of carbon steel, the sealing ring of the valve plate (the butterfly valve is sealed) is made of metal ring instead of rubber ring.
First, this product uses decades of industry experience to explore the unique formula of high-performance composite material, filter plate impact resistance, high temperature resistance, high pressure resistance, high toughness, long service life, the surface has a soft smooth finish and hardness, so that the filter plate and filter cloth automatic isolation, to achieve a long-term automatic cake off. 2. Compared with the same type of traditional filter plate, the filter area is increased by 13%. Three, the press cloth loading and unloading is fast and convenient. 4. Closed undercurrent drainage, clean and environmentally friendly site. 5. The moisture content of iron concentrate powder, copper concentrate and gold concentrate is within 7%. Clean coal moisture content within 13%. The water content of raw coal is less than 17%. Other industries in the same condition than the traditional filter press reduce 8%-15% of water.
As a guide device, the guide rail shall have the following properties: (1) Guiding accuracy mainly guides the accuracy of orbit motion. The main factors affecting the guiding accuracy are: the geometric accuracy and contact accuracy of the guide rail, the structural form of the guide rail, the stiffness and thermal deformation of the guide rail and its supporting parts, the oil film thickness and stiffness between the static (dynamic) press guide pair, etc. (2) Accuracy retention is mainly determined by the wear resistance of the guide rail. The wear resistance is related to the material of the guide rail, the friction property of the guide pair, the pressure on the guide rail and its distribution law. (3) The stiffness includes the self-stiffness and contact stiffness of the guide rail. It mainly depends on the shape of the guide rail, the size and the connection mode of the supporting parts and the stress status and other factors. (4) Low speed motion stationary moving guide is easy to produce friction self-excited vibration when moving at low speed or trace displacement, namely crawling phenomenon. Crawling can reduce the accuracy of positioning or increase the roughness of the workpiece surface.
Plastic chain is made of special engineering plastics, the whole chain by engineering plastic injection molding as one, the chain without internal and external chain, the whole chain by engineering plastic injection molding as one, by stainless steel pin or plastic connection, with low noise, corrosion resistance, light weight, anti-static, non-magnetic advantages, suitable for electronic, electrical, food, chemical, pharmaceutical and other equipment. Introduction of plastic chain: Plastic chain Product materials: plastic, PVC, PE, anti-UV, new material, return material, half return material and other new environmental protection materials Chain color: red and white, yellow and black, blue and white, green, orange, gray, fluorescent, reflective, luminous, etc. (color customized according to the color card) Summary: Division of loading and unloading, busy area and temporary space; Hotels, sports venues, shopping malls and other temporary access isolation can be used with road cones, traffic warning posts. Community property management company, residential property management office, parking lot, real estate developers, car dealers, auto supplies stores, security companies, hotel property, factory organs, tourist attractions, park river, highway, mountain handrail, lake fence, residential division, fence.
Manufacturing a variety of plastic gear: spur gear, helical gear, worm gear, crown gear, bevel gear, planetary gear, tooth box, damping gear, involute gear, cycloid gear, circular arc gear and other sizes of modulus gear, non-standard weird gear, multi-process with complex rubber gear, foreign standard low noise gear. The selection of various process parameters of the gear combination can effectively achieve the design requirements, such as deceleration, growth, timing, energy conversion, positioning point and other functions. Gear is a mechanical part with teeth meshing with each other. It is widely used in mechanical transmission and the whole field of machinery. Modern gear technology has reached: gear modulus O.004 ~ 100 mm; Gear diameter from 1 mm to 150 m; Transmission power up to 100,000 kW; The speed can reach 100,000 RPM; The circumferential velocity can reach 300 m/s. Products are used in micro motor, electronic products, auto parts, household appliances, office supplies, toys, crafts and other industries. For example, different gear combinations are used in automobile rearview mirror, headlight regulator, timer, micro motor, reducer, printer, fax machine, camera, DVD movement, shredder, copier, toy movement, instruments, medical instruments, vacuum cleaner, automatic coffee machine and other products. [1] Gear system noise is mainly caused by the following aspects: 1. Gear design: improper parameter selection, too small overlap, improper or no modification of tooth profile, unreasonable gear box structure, etc. 2, gear processing: base error and tooth profile error is too large, tooth clearance is too large, surface roughness is too large. 3, gear train and gear box: assembly eccentric, low contact accuracy, shaft parallelism, shaft, bearing, bearing stiffness is insufficient, bearing rotation accuracy is not high and improper clearance. 4. Input torque from other aspects. Load torque fluctuation, shafting torsional vibration, motor and other transmission pair balance, etc.
Silicone inflatable sealing ring is a kind of sealing technology results used under specific conditions, due to the complex manufacturing process of the finished product, higher requirements for the material, the qualified rate of the finished product is low, and the cross-section shape of the silicone inflatable sealing ring used in different occasions, circumference size, circumference direction are not the same, inflatable sealing ring from the cross-section shape see circular, rectangular, square, D type, C type, V type, M type and other types of inflatable sealing ring. The inflatable sealing ring is mainly used in the following situation, the gap seal between the large hatch and the hatch, the general circumference of the hatch is relatively large, affected by the processing and assembly accuracy or by the change of environmental temperature produced thermal expansion cold contraction deformation, resulting in the need to seal the gap is inconsistent or change, the range of change is generally in 3-5mm or even larger, It is difficult to achieve the ideal sealing effect by using ordinary sealing strips. In this case, it is necessary to have a kind of sealing products that can change with the gap. The inflatable sealing ring is a new sealing technology achievement developed successfully in order to meet the sealing requirements.
ZHM molybdenum alloy is a new type of molybdenum alloy. Zirconium and hafnium play both solid solution strengthening and dispersion strengthening with composite carbides, and their strengthening effect and high temperature stability are far better than titanium and zirconium alloys, which are marked as ZHM molybdenum alloys.
FFKM perfluoroether rubber O-ring
It is a terpolymer of perfluoro(methyl vinyl) ether, tetrafluoroethylene and perfluoroolefin ether. Also known as perfluororubber
The principle of achieving "self-sealing" effect: The pressure type seal in the contact dynamic seal is the contact pressure formed between the seal and the coupling surface through the pressing force generated by the pre-compression force and the medium pressure. The higher the medium pressure, the greater the contact pressure, which makes the seal The parts are tightly fitted with the coupling to block the leakage channel and achieve a "self-sealing" effect. The self-sealing self-tightening seal uses the back pressure generated by the deformation of the seal itself to increase with the increase of the medium pressure, so as to achieve the "self-sealing" effect.
The valve core of the dome valve is a spherical dome. During the opening and closing process of the dome valve, there is a gap of about 2mm between the valve core and the rubber sealing ring, so that the valve core and the rubber sealing ring can move in a non-contact manner. The purpose is to There is no friction between the valve core and the sealing ring to reduce wear. The pneumatic actuator of the dome valve is a fully enclosed rotary push rod type cylinder, which directly drives the dome valve to rotate, effectively preventing the occurrence of wear and leakage caused by dust entering it.
Polyurethane
Fluorine rubber
Nitrile rubber
POM support ring
Phenolic cloth support ring
Under the condition of low pressure, the U-shaped Y-shaped sealing ring only relies on the interference deformation of the lip to generate the seal. Due to the small contact area, the friction force is relatively low. As the pressure increases, the elastic deformation of the lip increases, stretching, When the compression and bending stress increases, the radial pressure of the U-shaped ring automatically increases, and the length of the contact with the sealing surface continues to increase until the entire axial length of the U-shaped ring is in contact with the sealing surface, thereby ensuring good sealing performance under high pressure. The U-shaped Y-ring is the most commonly used oil seal in hydraulic cylinders. It is a typical lip seal and can obtain a good seal whether it is used for the piston or the piston rod.
The wide variety of sealing materials increases the general adoption of the performance characteristics of the Y-shaped sealing ring. At the same time, the design of the sealing structure, through the skillful hands of Dongsheng designers, produces various types of seals to form the pursuit of the machinery and equipment industry. Select the correct sealing ring material according to the working equipment conditions of the hydraulic seal. The commonly used rubber materials for the hydraulic Y-shaped sealing ring include nitrile rubber (NBR) and fluorine rubber (FKM) with strong heat resistance and oil resistance; The polyurethane rubber material is selected for the requirements of abrasion resistance and pressure resistance.
The wide variety of sealing materials increases the general adoption of the performance characteristics of the Y-shaped sealing ring. At the same time, the design of the sealing structure, through the skillful hands of Dongsheng designers, produces various types of seals to form the pursuit of the machinery and equipment industry. Select the correct sealing ring material according to the working equipment conditions of the hydraulic seal. The commonly used rubber materials for the hydraulic Y-shaped sealing ring include nitrile rubber (NBR) and fluorine rubber (FKM) with strong heat resistance and oil resistance; The polyurethane rubber material is selected for the requirements of abrasion resistance and pressure resistance.
The wide variety of sealing materials increases the general adoption of the performance characteristics of the Y-shaped sealing ring. At the same time, the design of the sealing structure, through the skillful hands of Dongsheng designers, produces various types of seals to form the pursuit of the machinery and equipment industry. Select the correct sealing ring material according to the working equipment conditions of the hydraulic seal. The commonly used rubber materials for the hydraulic Y-shaped sealing ring include nitrile rubber (NBR) and fluorine rubber (FKM) with strong heat resistance and oil resistance; The polyurethane rubber material is selected for the requirements of abrasion resistance and pressure resistance.
The wide variety of sealing materials increases the general adoption of the performance characteristics of the Y-shaped sealing ring. At the same time, the design of the sealing structure, through the skillful hands of Dongsheng designers, produces various types of seals to form the pursuit of the machinery and equipment industry. Select the correct sealing ring material according to the working equipment conditions of the hydraulic seal. The commonly used rubber materials for the hydraulic Y-shaped sealing ring include nitrile rubber (NBR) and fluorine rubber (FKM) with strong heat resistance and oil resistance; The polyurethane rubber material is selected for the requirements of abrasion resistance and pressure resistance.
The wide variety of sealing materials increases the general adoption of the performance characteristics of the Y-shaped sealing ring. At the same time, the design of the sealing structure, through the skillful hands of Dongsheng designers, produces various types of seals to form the pursuit of the machinery and equipment industry. Select the correct sealing ring material according to the working equipment conditions of the hydraulic seal. The commonly used rubber materials for the hydraulic Y-shaped sealing ring include nitrile rubber (NBR) and fluorine rubber (FKM) with strong heat resistance and oil resistance; The polyurethane rubber material is selected for the requirements of abrasion resistance and pressure resistance.
The wide variety of sealing materials increases the general adoption of the performance characteristics of the Y-shaped sealing ring. At the same time, the design of the sealing structure, through the skillful hands of Dongsheng designers, produces various types of seals to form the pursuit of the machinery and equipment industry. Select the correct sealing ring material according to the working equipment conditions of the hydraulic seal. The commonly used rubber materials for the hydraulic Y-shaped sealing ring include nitrile rubber (NBR) and fluorine rubber (FKM) with strong heat resistance and oil resistance; The polyurethane rubber material is selected for the requirements of abrasion resistance and pressure resistance.
The installation and assembly of the step seal is also to install the O-ring first, and then install the wear ring of the step seal. When installing the wear ring, first press the wear ring inward in the diameter direction, and then install the wear ring to the groove. inside the groove, and then smooth out the deformation by hand. When installing in winter in the north, first heat the wear-resistant ring and then put it on the shaft. After cooling, install it according to the above method. When placing the shaft, you must pay attention to observe whether the shaft is completely inserted into the wear-resistant ring. At the same time, pay attention to the guide belt not to get stuck. Keep the shaft, otherwise the STE seal may be crushed because the guide belt is squeezed out of the groove.
The Gree ring is composed of a rubber O-ring and a polytetrafluoroethylene ring. The material is PTFE + NBR. In special cases, the rubber elastomer nitrile rubber NBR adopts fluorine rubber FKM. It can be divided into grid ring for hole and grid ring for shaft, but its sealing effect is the same. According to its own deformation, it will produce higher initial contact stress on the sealing surface, preventing the leakage of pressureless liquid. When the hydraulic cylinder is working, the pressure liquid squeezes the square sealing ring to the maximum extent through the elastic deformation of the o-shaped sealing ring, so that it is close to the sealing surface and generates a higher additional contact stress that increases with the pressure of the pressure liquid. Together with the initial contact stress, the leakage of the pressurized liquid is prevented.
Referred to as star ring, also known as X-shaped ring, its size is represented by inner diameter d1 and section diameter d2. The star ring is a sealing element that can seal in two directions. It is installed in various forms of grooves and its radial or axial pre-compression gives the star ring the initial sealing ability, which increases with the increase of pressure. Great sealing force. Under the action of pressure, the cross-sectional shape of the star ring will make the pressure evenly transmitted to all sides, so it has a good sealing effect.
V-type fluororubber cloth oil seal
The V-shaped sealing ring has a V-shaped section and is also a lip-shaped sealing ring. The V-shaped sealing device consists of three parts: support ring, sealing ring and pressure ring. The standard angle of the V-shaped seal is 90°, and 60° is also used in special occasions. The support ring is an important part to support the V-shaped sealing ring. Its section is thick and strong, the size is accurate, and the concave angle is the same (90°) or slightly larger than that of the V-shaped sealing ring, so that the sealing ring can be placed stably. The function of the pressure ring is to create an initial compression amount for the V-shaped sealing ring to make it fully contact with the sealed surface, and to adjust the compression amount of the V-shaped sealing ring. EUB Industrial Design. China In the free state, the outer diameter of the lip of the V-ring is larger than the inner diameter of the packing cavity, and the inner diameter of the lip is smaller than the outer diameter of the piston rod. In this way, there will be some deformation after assembly. Due to the action of the support ring, this deformation occurs only at the tip of the lip and at its junction...)
V-type nitrile rubber cloth combination sealing ring
Product use: used for the sealing of the piston and the piston rod of the reciprocating ultra-high pressure hydraulic cylinder Scope of application: hydraulic cylinders for metallurgy, mining, general equipment
UPi Oil Seal
TDI type shaft sealing ring is composed of a high-performance polyurethane U-shaped oil seal and a PTFE slip ring added with bronze powder. Its special design can reduce the friction at the root of the oil seal and reduce the residual oil carried out of the piston rod. Used in conjunction with a single-acting wiper ring. There is interference at the PTFE ring, and it will generate stronger pressure on the piston rod after being subjected to oil pressure. Its function is similar to the step seal, so sometimes a single TDI oil seal can replace the main oil seal + buffer ring.
Performance and use : SYPGW piston seal has good wear resistance, low friction coefficient and easy installation. Material : The main sealing material is imported composite PTFE, the support ring is POM, and the rubber is NBR (or FKM) 70Shore A. Working conditions: Working pressure: ≤50Mpa. Working temperature: -40~+110℃. Working speed: ≤1.2m/s. Medium: commonly used hydraulic medium. design standards: Groove dimensions conform to B+S's PHD and Parker's CT groove standards.
KDAS combination sealing ring is a two-way acting piston sealing ring. This combination sealing ring is composed of an elastic rubber ring, two additional retaining rings and two wear-resistant rings. This design provides a compact combination of sealing and guiding, and is suitable for combined sealing rings installed in closed grooves. The combined sealing ring includes an elastic toothed sealing ring, two retaining rings and two wear-resistant rings. There is a real sealing element in the middle; a retaining ring and a wear ring are placed on each side. The retaining ring prevents the sealing ring from being squeezed into the gap; the sealing ring in the middle is a toothed sealing ring, which can play a good sealing role when it is stationary and moving. The function of the wear ring is to guide the piston in the cylinder and bear the radial force.
This product has a good dust-scraping effect, and even has a good dust-proof effect on firmly bonded dust. Wear-resistant, long service life, has the function of saving and returning the residual oil in reverse, using elastic material, which can reduce the friction force. Suitable for reciprocating, oscillating or rotary motion systems.
The JA type dust ring is a seal used for dustproofing at the exposed part of the piston rod or valve rod of the reciprocating oil cylinder. Or it can be used anywhere as long as it plays a role in preventing dust. Wide range of use, easy installation and low cost are its biggest features.
The JA type dust ring is a seal used for dustproofing at the exposed part of the piston rod or valve rod of the reciprocating oil cylinder. Or it can be used anywhere as long as it plays a role in preventing dust. Wide range of use, easy installation and low cost are its biggest features.
The JA type dust ring is a seal used for dustproofing at the exposed part of the piston rod or valve rod of the reciprocating oil cylinder. Or it can be used anywhere as long as it plays a role in preventing dust. Wide range of use, easy installation and low cost are its biggest features.
This product has a good dust-scraping effect, and even has a good dust-proof effect on firmly bonded dust. Wear-resistant, long service life, has the function of saving and returning the residual oil in reverse, using elastic material, which can reduce the friction force. Suitable for reciprocating, oscillating or rotary motion systems.
The double lip seal is double duty: Seal the lubricating oil in the bearing cavity to ensure the formation of a continuous oil film (the oil film plays a bearing role and bears the weight of the roll and the working load of the rolling mill). Seal the external cooling water, rolling oil, iron filings, dust and other sundries to prevent them from infiltrating into the bearing cavity, avoid the contamination and failure of the lubricating oil in the cavity and cause the bearing to burn out, and maintain the normal operation of the bearing.
QY series sealing ring is the most commonly used sealing ring in oil cylinder, it is a typical lip sealing ring. In the case of low pressure, the seal is only produced by the interference deformation of the lip, and the friction force is relatively low due to the small contact surface. As the pressure increases, the elastic deformation of the lip increases, the tensile, compressive and bending stresses increase, the radial compression force of the sealing ring automatically increases, and the length of contact with the sealing surface continues to increase until the entire axial length of the sealing ring Contact with the sealing surface to ensure good sealing under high pressure
QY series sealing ring is the most commonly used sealing ring in oil cylinder, it is a typical lip sealing ring. In the case of low pressure, the seal is only produced by the interference deformation of the lip, and the friction force is relatively low due to the small contact surface. As the pressure increases, the elastic deformation of the lip increases, the tensile, compressive and bending stresses increase, the radial compression force of the sealing ring automatically increases, and the length of contact with the sealing surface continues to increase until the entire axial length of the sealing ring Contact with the sealing surface to ensure good sealing under high pressure
Main advantage: It acts as a one-way valve in the entire sealing system, so it is no longer necessary to add other one-way valves to the system to automatically select the best buffer stroke. Very good cushioning even in the case of slight eccentricity due to automatic centering
The EU-type piston rod dust-proof sealing ring for the cylinder is formed by a single part, and its main functions are sealing, dust-proof and fixing.
The TB iron shell oil seal is the exposed skeleton oil seal. Compared with the inner skeleton oil seal, the iron shell oil seal has the characteristics of good rigidity, easy installation, safe use, accurate positioning, high coaxiality, good heat conduction and heat dissipation, and saving glue. The outer skeleton oil seal is the centerless grinding of the skeleton of the oil seal to improve the coaxiality of the outer wheel and the inner wheel after the oil seal is assembled, thereby improving the dynamic sealing accuracy of the skeleton oil seal and better preventing oil leakage. The outer frame oil seal requires higher installation machining accuracy. Rubber and plastic material: nitrile rubber (letters represent NBR) heat-resistant 120 degrees, good oil resistance, EPDM rubber (letters represent EPDM) heat-resistant 150 degrees, not oil-resistant silicone material (letters represent VMQ) heat-resistant 220 degrees oil-resistant general poly4 Fluoroethylene (letters represent PTFE), heat-resistant 280 degrees, good oil resistance, fluorine rubber (letters represent FKM), heat-resistant 200 degrees, good oil resistance, polyurethane (letters represent PU), heat-resistant and 90 degrees wear-resistant.
The split skeleton oil seal is a kind of industrial seal. Simply put, it is a sealing element used to seal the medium, and it can also prevent external dust and dirt from entering the internal contamination medium. Moreover, its convenient and quick disassembly and assembly method has become a commonly used mechanical equipment sealing product in the industry.
The split skeleton oil seal is a kind of industrial seal. Simply put, it is a sealing element used to seal the medium, and it can also prevent external dust and dirt from entering the internal contamination medium. Moreover, its convenient and quick disassembly and assembly method has become a commonly used mechanical equipment sealing product in the industry.
Fluorine rubber opening oil seal
The split skeleton oil seal is a kind of industrial seal. Simply put, it is a sealing element used to seal the medium, and it can also prevent external dust and dirt from entering the internal contamination medium. Moreover, its convenient and quick disassembly and assembly method has become a commonly used mechanical equipment sealing product in the industry.
Split skeleton oil seal is a kind of industrial seal. Simply put, it is a sealing element used to seal the medium, and it can also prevent external dust and dirt from entering the internal contamination medium. Moreover, its convenient and quick disassembly and assembly method has become a commonly used mechanical equipment sealing product in the industry.
Stainless Steel Shell Oil Seal
The function of the skeleton oil seal is generally to isolate the parts that need to be lubricated in the transmission parts from the output parts, so as not to allow the leakage of lubricating oil. The skeleton is like the steel bars in the concrete member, which acts as a reinforcement and enables the oil seal to maintain its shape and tension. According to the skeleton type, it can be divided into inner skeleton oil seal, outer skeleton oil seal, and inner and outer skeleton oil seal. The skeleton oil seal is made of high-quality nitrile rubber and steel plate, with stable quality and long service life. Widely used in automobiles, motorcycle crankshafts, camshafts, differentials, shock absorbers, engines, axles, front and rear wheels and other parts.
The function of the skeleton oil seal is generally to isolate the parts that need to be lubricated in the transmission parts from the output parts, so as not to allow the leakage of lubricating oil. The skeleton is like the steel bars in the concrete member, which acts as a reinforcement and enables the oil seal to maintain its shape and tension. According to the skeleton type, it can be divided into inner skeleton oil seal, outer skeleton oil seal, and inner and outer skeleton oil seal. The skeleton oil seal is made of high-quality nitrile rubber and steel plate, with stable quality and long service life. Widely used in automobiles, motorcycle crankshafts, camshafts, differentials, shock absorbers, engines, axles, front and rear wheels and other parts.
NBR nitrile rubber skeleton oil seal
The function of the skeleton oil seal is generally to isolate the parts that need to be lubricated in the transmission parts from the output parts, so as not to allow the leakage of lubricating oil. The skeleton is like the steel bars in the concrete member, which acts as a reinforcement and enables the oil seal to maintain its shape and tension. According to the skeleton type, it can be divided into inner skeleton oil seal, outer skeleton oil seal, and inner and outer skeleton oil seal. The skeleton oil seal is made of high-quality nitrile rubber and steel plate, with stable quality and long service life. Widely used in automobiles, motorcycle crankshafts, camshafts, differentials, shock absorbers, engines, axles, front and rear wheels and other parts.
FKM fluorine rubber skeleton oil seal
The function of the skeleton oil seal is generally to isolate the parts that need to be lubricated in the transmission parts from the output parts, so as not to allow the leakage of lubricating oil. The skeleton is like the steel bars in the concrete member, which acts as a reinforcement and enables the oil seal to maintain its shape and tension. According to the skeleton type, it can be divided into inner skeleton oil seal, outer skeleton oil seal, and inner and outer skeleton oil seal. The skeleton oil seal is made of high-quality nitrile rubber and steel plate, with stable quality and long service life. Widely used in automobiles, motorcycle crankshafts, camshafts, differentials, shock absorbers, engines, axles, front and rear wheels and other parts.
Spring Seal/ spring energized seal/ Variseal is a U-shaped Teflon high-performance seal with a special spring inside. By the appropriate spring force plus the system fluid pressure, the sealing lip (surface) is pushed out. Gently press down on the metal surface being sealed to create a very good seal. The actuation effect of the spring can overcome the slight eccentricity of the metal mating surface and the wear of the sealing lip, while maintaining the expected sealing performance.
PTFE gaskets are also called PTFE gaskets or Teflon (Teflon) gaskets abroad. Flat gaskets, V-shaped gaskets, piston rings are machined or cut from PTFE rods, tubes, and plates. , ball valve gaskets, etc. have good characteristics such as corrosion resistance, aging resistance and non-conductivity. PTFE pH 0-14 (except molten alkali metals and fluorine at high temperature and high pressure). It can have good mechanical strength between -100°C and 100°C. Use pressure 10Mpa. At temperatures below -185°C, PTFE gaskets become brittle. Pure PTFE gaskets are a clean sealing product that will not contaminate anything they come in contact with.
The PTFE composite gasket is made of high-grade EPDM EPDM rubber body, and a 100% pure PTFE shell that has been specially activated at its effective sealing part is compounded.
Metal spiral wound gaskets are made of high-quality SUS304, SUS316 ("V" shape or "W" shape) metal strips and other alloy materials and graphite, asbestos, PTFE, non-asbestos and other soft materials alternately overlapped and spirally wound. The metal strips are fixed by spot welding at the beginning and end. Metal spiral wound gasket is the gasket with the best resilience among semi-metal gaskets
The octagonal metal ring gasket is installed in the trapezoidal ring groove on the flange surface. When the connecting bolt is tightened, it is axially compressed and tightly attached to the upper and lower trapezoidal grooves, resulting in plastic deformation, forming an annular sealing band and establishing the initial seal. After boosting, under the action of medium pressure, the ring gasket is radially expanded. The gasket and the inclined surface of the trapezoidal groove are more tightly fitted, resulting in a self-tightening effect. However, the increase of the medium pressure will also deform the flange and the connecting bolt, resulting in the relative separation between the sealing surfaces and the relative decrease in the gasket sealing ratio. Therefore, the ring gasket can be considered as a semi-self-tightening seal. The octagonal metal ring gasket is mainly in surface contact with the flange groove. Compared with the oval ring gasket, although it is not easy to achieve close contact with the flange groove, it can be used again and is easy to process because the cross section is composed of straight lines. At the same time, the hardness of the octagonal metal ring gasket should be 15~20HB lower than the flange surface.
Nitrile-butadiene rubber is a synthetic rubber suitable for good corrosion resistance to oils, solvents, aromatic hydrocarbons, basic hydrocarbons, oil and natural gas over a wide temperature range. Good corrosion resistance to hydroxides, salts and near neutral acids. However, in strong oxidizing media, chlorinated hydrocarbons, ketones and lipids, its corrosion resistance is poor, and the recommended working temperature is 51℃~121℃.
Fluoroelastomer has a high degree of chemical stability and is one of the medium-resistant properties of all elastomers at present. Type 26 fluororubber is resistant to petroleum-based oils, diester oils, silicone ether oils, silicic acid oils, inorganic acids, most organic and inorganic solvents, pharmaceuticals, etc., only low molecular weight ketones, ethers, Ester, not resistant to amine, ammonia, hydrofluoric acid phosphoric acid hydraulic oil. The dielectric properties of type 23 fluorine rubber are similar to those of type 26, and it is more unique. Its resistance to strong oxidizing inorganic acids such as fuming nitric acid and concentrated sulfuric acid is better than that of type 26. It is immersed in 98% HNO3 at room temperature. Its volume expansion is only 13% to 15%.
EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated diene. It only contains unsaturated double bonds in the side chain, so it has excellent aging resistance such as ozone resistance, heat resistance and weather resistance. , automotive seals and other fields.
The plate heat exchanger is a new type of high-efficiency heat exchanger made of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates, and heat is exchanged through the plates. Plate heat exchanger is an ideal equipment for heat exchange of liquid-liquid, liquid-vapor. It has the characteristics of high heat exchange efficiency, small heat loss, compact and lightweight structure, small footprint, convenient installation and cleaning, wide application and long service life. Under the same pressure loss, the heat transfer coefficient is 3-5 times higher than that of the tubular heat exchanger, the floor area is one third of that of the tubular heat exchanger, and the heat recovery rate can be as high as 90% or more. There are three main types of plates: herringbone corrugated plate, horizontal straight corrugated plate and tumor-shaped plate.
It has good weather resistance, odor resistance, water resistance and chemical resistance. It is suitable for alcohols and ketones, and can also be used for sealing in high temperature water vapor environment. It is suitable for sanitary equipment, automobile radiator and automobile braking system. Not suitable for food use or exposure to mineral oil. The general operating temperature range is -55℃~150℃.
The volume of the O-ring being squeezed into the gap should be less than the maximum allowable value for the rubber ring to be squeezed into. For different kinds of fixed sealing or dynamic sealing applications, O-ring provides designers with an effective and economical sealing element. The o-ring is a double-acting sealing element. The initial compression in radial or axial aspects upon installation, imparts the initial sealing capability of the o-ring itself. The sealing force generated by the system pressure and the initial sealing force are combined into the total sealing force, which increases with the increase of the system pressure. O-rings play a prominent role in static sealing occasions. However, o-rings are also often used in dynamic appropriate applications, but are limited by the speed and pressure at the seal.
The volume of the O-ring being squeezed into the gap should be less than the maximum allowable value for the rubber ring to be squeezed into. For different kinds of fixed sealing or dynamic sealing applications, O-ring provides designers with an effective and economical sealing element. The o-ring is a double-acting sealing element. The initial compression in radial or axial aspects upon installation, imparts the initial sealing capability of the o-ring itself. The sealing force generated by the system pressure and the initial sealing force are combined into the total sealing force, which increases with the increase of the system pressure. O-rings play a prominent role in static sealing occasions. However, o-rings are also often used in dynamic appropriate applications, but are limited by the speed and pressure at the seal.
The O-ring is a circular rubber ring with a circular cross-section. It is mainly used for mechanical parts to prevent leakage of liquid and gaseous media under static conditions. In some cases, it can also be used for axial reciprocation and low-speed rotation. Moving dynamic sealing element. According to different conditions, different materials can be selected to suit it.
O-rings are the most widely used seals in hydraulic and pneumatic transmission systems. Generally, O-rings are rarely used in rotary motion sealing devices. The O-ring is generally installed in the groove with a rectangular cross-section on the outer or inner circle to play a sealing role.
Nitrile-butadiene rubber is a synthetic rubber suitable for good corrosion resistance to oils, solvents, aromatic hydrocarbons, basic hydrocarbons, oil and natural gas over a wide temperature range. Good corrosion resistance to hydroxides, salts and near neutral acids. However, in strong oxidizing media, chlorinated hydrocarbons, ketones and lipids, its corrosion resistance is poor, and the recommended working temperature is 51℃~121℃.
Fluorine rubber compound is made by mixing binary and ternary fluorine raw rubber with compounding agent and vulcanizing agent. In addition to excellent heat resistance, medium resistance, and good physical and mechanical properties, it also has low compression set, good elasticity and long service life. Fluorine rubber has outstanding heat resistance (200 ~ 250 ℃), oil resistance, can be used to manufacture cylinder liner seals, rubber bowls and rotating lip seals, which can significantly improve the service time. Recommended working temperature -40℃~232℃.
It has high and low temperature resistance, and maintains good flexibility in the temperature range of -70°C—+260°C. At the same time, it has various excellent properties such as waterproof, flame retardant, high temperature resistance, electrical conductivity, wear resistance, oil resistance, etc., in line with the EU environmental protection level. standard.
Its advantages are high reliability, good compounding, long working life and low cost. In low pressure operations, the force generated by the cloth-strengthened diaphragm may become superfluous.
The working principle of the single-acting diaphragm type pneumatic cylinder: when the compressed air enters the rodless cavity from the air port on the cylinder head, the diaphragm is pushed, and the tray compresses the spring to make the piston rod move downward; When discharging, the spring releases energy to push the diaphragm, the tray and the piston rod to move upward. The working principle of the double-acting
Flexible rubber elbow, referred to as rubber elbow, is composed of fabric-reinforced rubber parts and flat unions, loose metal flanges or threaded pipe flanges. It is used for pipeline vibration isolation, noise reduction, and displacement compensation.
The cargo bed buffer pad is mainly installed on the edge of the loading and unloading platform, which is convenient for the buffer pad of the truck to stop, and plays the role of protecting the cargo bed and the truck from damage. Anti-collision rubber is one of the protective facilities that must be installed on the unloading platform.
Diaphragm filter press rubber filter plate is based on the current situation of my country's filter press industry, developed a new overall structure of diaphragm type rubber filter plate, perfected the inner support skeleton structure of the filter plate, the production process of the filter plate and the rubber formula of the filter plate , so that the filter plate has the advantages of high strength, high tear, medium resistance, high and low temperature resistance, lightness and durability.
It is widely used in pipelines with low pressure, large diameter, large dislocation and frequent loading and unloading, especially for the connection between mud tanks of solid control systems in the petroleum industry. The connecting pipeline can be made of glass steel pipe or rubber hose with joints at both ends. The glass steel pipe is corrosion-resistant, easy to handle, and the rubber pipe can be bent, which is suitable for dislocation installation of pipelines on site.
In recent years, coated metal has become a new application or potential application field of TPE/TPR and TPU. A layer of soft rubber material is coated on the metal surface, which can play the role of anti-skid, shock absorption, anti-corrosion and so on. TPE/ TPR, TPU applied to coated metal
Plum-shaped elastic coupling buffer. It is used to buffer the shaft of the coupling of various heavy machinery equipment. In some areas it is also known as the Plum Blossom Plate. According to the material, it can be divided into polyurethane plum cushion, rubber plum cushion, nylon plum cushion
The higher the quality of the pinch valve inner liner, the longer the service life of the pinch valve and inner liner. The long service life of the pinch valve inner bushing means low maintenance costs for the equipment. The replacement of the pinch valve inner liner is very simple and can be carried out at the user's job site with the help of detailed installation instructions, thus requiring only a short downtime.
Hydrogenated nitrile rubber protector capsule deep well submersible electric pump protector capsule capsule type seal protector, protector refers to a device that provides electrical safety protection for electrical appliances. It has a built-in intelligent anti-high voltage device. Under abnormal circumstances, the internal protection device will be activated intelligently to ensure the safety of electricity consumption of the back-end electrical appliances.
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