229 results about "Lip seal" patented technology

The invention discloses a cabin-penetrating cable sealing assembly with a combined rubber ring, and relates to the field of cable cabin-penetrating sealing, and the cabin-penetrating cable sealing assembly comprises a cabin-penetrating pipe body and at least one sealing ring assembly. The cabin penetrating pipe body is provided with a pipe cavity which extends in the axial direction and allows a cable to penetrate through. The pipe cavity is divided into an in-cabin section and an out-cabin section. The sealing ring assembly comprises a set of lip-shaped sealing rings, lips of the set of lip-shaped sealing rings face the outside of the cabin, the in-cabin section is filled with the lip-shaped sealing rings in an overlapped mode in the axial direction, the cable is sleeved with the lip-shaped sealing rings, and the lip-shaped sealing rings comprise a main sealing ring and an auxiliary sealing ring. The gap between the cable and the cabin penetrating pipe body is filled with the main sealing ring. The auxiliary sealing ring fills a gap between the cable and the cabin penetrating pipe body, and the auxiliary sealing ring and the main sealing ring are arranged in an overlapped mode. The elasticity of the auxiliary sealing ring is smaller than that of the main sealing ring, and the abrasion resistance of the auxiliary sealing ring is larger than that of the main sealing ring. The cabin-penetrating cable sealing assembly with the combined rubber ring is high in sealing reliability.

The lip seal sealing structure for the rigidity valve comprises a lip seal, a static core, a valve rod and a valve framework, the valve rod penetrates through the static core, the valve framework is installed at the right side end of the valve rod, the lip seal is arranged in the static core, and annular grooves are distributed in the outer circumference of the valve framework. The utility model has the advantages of simple structure and long service life.

The invention relates to the field of semiconductors, and discloses a lip-shaped sealing element shape correcting device which is characterized in that a profiling jig disc assembly is rotatably mounted on a spinning tool platform through a central shaft; the vertical support is installed on the spinning tool platform beside the profiling jig disc assembly. The spinning tool main shaft is installed on the vertical support, and the head of a downward pressing rod at the lower end of the spinning tool main shaft is used for applying downward pressure to conduct shape correcting operation. The spinning tool main knob is installed on the vertical support and drives the spinning tool main shaft to move up and down through a gear mechanism. The positioning knob assembly is installed on the lower portion of the vertical support and can limit rotation of the profiling jig disc assembly so as to ensure that the position, needing shape correction, of a product is located under the head of a lower pressing rod of a spinning tool spindle. The dial indicator is installed on the lower portion of the spinning tool spindle and used for measuring the deformation size of a product in the spinning process. The detection pin is installed on the spinning tool platform beside the vertical support and used for adjusting the height of the dial indicator installed on the spinning tool main shaft to the correction position.

A valve member for a connector includes a head portion, a body portion, and a circumferential lip seal extending radially outward from an outer surface of the head portion. The head portion includes a top section defining a first seal portion. The body portion extends longitudinally from the head portion and defines a second seal portion at a proximal end thereof. The second seal portion is disposed distally to the first seal portion. The circumferential lip seal is disposed between the first and second seal portions.

The utility model discloses a magnetic confinement large-diameter lip-shaped sealing system for a rotating shaft, which is characterized by comprising a rubber seal (1), a magnetic rubber ring (2), a support ring (3), a rotating shaft (4) and a sealing cavity (5), the magnetic rubber ring (2) is embedded in the rubber seal (1), the support ring (3) is arranged in the sealing cavity (5), and the rotating shaft (4) is arranged in the sealing cavity (5). And the rubber seal (1) is fixed between two adjacent support rings (3). According to the oil seal, appropriate radial force can be provided by controlling the magnetic force of the magnetic rubber ring (2), when the lip is abraded, the magnetic rubber ring (2) is closer to a rotating shaft (4), the magnetic force is increased, the radial force reduced due to the abrasion of the lip is compensated, and then the radial force of the oil seal lip is maintained at a relatively stable level for a long time.

A seal assembly (32) includes a wear sleeve (34), the wear sleeve having an outer sleeve surface (44) made of a fluoropolymer material and a lip seal (36) made of an elastic material and fitted upon the wear sleeve. The lip seal defines a seal axis (18) extending between a first axial seal end (20) and a second axial seal end (20) and includes an outer seal surface (52) and a circumferentially extending inner seal surface (54) forming an opening receiving the wear sleeve. The lip seal further includes a sealing lip (58) in sealing contact with the outer sleeve surface.

An improved multiport rotary valve assembly is disclosed for fluid control systems, particularly in direct lithium and mineral extraction applications. The assembly features a valve body comprising a housing ring, upper and lower closure discs, and a process disc, with advanced polymeric seals, including radial and lip seals, ensuring robust sealing engagement. A mechanically biased tensioning assembly, incorporating tension springs and load cells, maintains consistent sealing compression, mitigating issues of under-engagement and over-engagement caused by thermal and pressure variations. The valve assembly reduces leakage, cross-contamination, and seal degradation, enhancing extraction rates, operational efficiency, and seal longevity. Real-time monitoring and feedback mechanisms enable precise adjustments during startup, operation, and cooldown, minimizing manual intervention and downtime. This design addresses stringent purity requirements in direct lithium extraction while supporting high throughput and reliable performance under demanding conditions.

This invention discloses a high-pressure water electrolysis hydrogen production device, including a pressing device and an electrolytic cell. The pressing device applies sealing pressure to both ends of the electrolytic cell. Several electrode assemblies are stacked sequentially in the pressing device. A lip seal and a limiting ring are concentrically arranged between two adjacent electrode assemblies. The limiting ring is sleeved on the outside of the lip seal. Two adjacent electrode assemblies are spaced apart on both sides of the limiting ring and are insulated. The inner ring wall of the limiting ring is used to circumferentially constrain the lip seal. The water pressure strength of the electrolytic cell of this invention can reach 10 MPa or above, and the safe pressure for air tightness testing can reach 8 MPa or above. By changing the sealing principle of the electrolytic cell, changes are made to the sealing system of the electrolytic cell, overcoming the sealing difficulties in manufacturing ultra-large electrolytic cell equipment and overcoming the deflection and deformation problems during the use of medium and large-sized electrolytic cell equipment, thus meeting the market demand for high-pressure, especially high-pressure medium and large-sized water electrolysis hydrogen production equipment.

The utility model relates to the technical field of drilling tools, in particular to a full-hydraulic bidirectional jar for a high-energy coiled tubing, which comprises a wash pipe assembly, a cone valve, a pressure energy shell and a transmission assembly, the wash pipe assembly comprises a wash pipe, a wash pipe shell and a first lip-shaped sealing component arranged in the wash pipe shell; the cone valve and pressure energy shell comprises a first cone valve, a second cone valve and a pressure energy shell; the transmission assembly comprises a spline punching shaft, a spline shell and a pressure regulating ring; the first cone valve and the second cone valve are fixed to the spline punching shaft through the first sealing ring and the second sealing ring respectively, the spline punching shaft is connected with the pressure energy shell in a matched mode through a spline, and the pressure adjusting ring is arranged in an axial adjusting groove of the spline punching shaft in a sleeved mode. By means of the full-hydraulic two-way jarring structural design, two-way controllable jarring under the lifting and pressing working conditions is achieved, and the limitation of a traditional one-way jar is solved.

The invention provides an abrasion monitoring sealing ring structure, a forming process and a sealing device, the abrasion monitoring sealing ring structure comprises a lip-shaped sealing ring, the lip-shaped sealing ring is provided with a base and a lip part which are connected, a transition part is formed between the base and the lip part, and a mounting groove extending to the transition part and the base is formed in the lip part; the flexible circuit board is provided with a first fixed end part, an elastic telescopic part and a second fixed end part which are sequentially connected along the length direction of the flexible circuit board, the flexible circuit board is arranged in the mounting groove, the first fixed end part and the second fixed end part are respectively fixed on the lip part and the base, and the elastic telescopic part corresponds to the transition part; under the state that the angle between the base and the lip part is changed, the elastic telescopic part located on the transition part is stretched or shortened; and the first fixed end part can be worn along with the lip part so as to change a monitoring electric signal formed in the flexible circuit board. According to the invention, the problems of low monitoring precision, weak reliability, difficult installation and poor practicability of the current shield main drive seal can be solved.

The utility model relates to the technical field of ball valves, in particular to a one-piece type floating ball valve which comprises a valve body and a valve cover assembly, a valve cavity, an inflow channel and an outflow channel are arranged in the valve body, the inflow channel and the outflow channel are respectively communicated with the valve cavity, a valve seat is arranged in the valve cavity, and a check block and a pressing block are arranged on the inner side of a valve cover. The right side of the pressing block is arranged on the valve seat in a pressing mode, it is guaranteed that the valve seat is installed and fixed, the first lip-shaped sealing ring and the second lip-shaped sealing ring are separated through the check block, the first lip-shaped sealing ring and the second lip-shaped sealing ring do not affect each other, and the sealing effect of the first lip-shaped sealing ring and the sealing effect of the second lip-shaped sealing ring are guaranteed. The first lip-shaped sealing ring and the second lip-shaped sealing ring form a lip-shaped sealing ring structure between the valve cover assembly and the valve body, so that the lip-shaped sealing ring structure is adopted in the small-caliber one-piece type floating ball valve; and the first lip-shaped sealing ring and the second lip-shaped sealing ring form a double-sealing structure, so that the sealing effect of the ball valve is improved.

The utility model discloses a condenser pipe device, and relates to the technical field of condenser pipes. Comprising an outer pipe body, a discharge pipe is arranged at the bottom of the outer pipe body, a communicating assembly is arranged in the outer pipe body, an installation connecting assembly is arranged at the top of the outer pipe body, the communicating assembly comprises an annular pipe arranged above the top end of the outer pipe body, and the installation connecting assembly comprises an installation pipe fixedly arranged on the outer side of the annular pipe in a sleeving mode; the top of the outer pipe body is sleeved with the connecting pipe, a stepped block groove is formed in the outer side of the top end of the outer pipe body, a stepped ring block is fixed to the inner wall of the connecting pipe and matched with the stepped block groove, and a lip-shaped sealing ring is installed on the stepped block groove. Through the arrangement of the installation connecting assembly, the outer pipe body and the spiral pipe of the device are integrally locked, installed and connected through the installation pipe and the connecting pipe, the sealing performance is guaranteed, meanwhile, the device is convenient to disassemble and replace, the whole device does not need to be replaced after being damaged, and the usability of the device is guaranteed.

The application discloses an integrated buffer seal engineering machinery oil cylinder and relates to the technical field of oil cylinders, which comprises a cylinder body, a piston and a piston rod, a buffer seal assembly is arranged outside the piston, the buffer seal assembly comprises a buffer column arranged at the front end and two lip-shaped sealing rings, a base is arranged at the bottom of the cylinder body, a buffer groove is formed in the base, and a throttle hole is formed in the base. The integrated design of the buffer and the sealing structure achieves multistage attenuation of impact load, dynamic adjustment of sealing force and self-adaptive control of oil flow, the cylinder hydraulic pressure dynamically adjusts the throttle hole diameter, cooperates with the multistage buffer structure, and reduces the impact pressure; meanwhile, the temperature self-adaptive flow control system can intelligently adjust the flow rate according to the change of the hydraulic oil viscosity, actively enhances the sealing tightness under high-temperature working conditions, effectively inhibits leakage, automatically optimizes the starting parameters in a low-temperature environment, and improves the equipment response speed.

The utility model provides a multi-lip sealing ring for a variable pitch bearing and a yaw bearing of a fan, which belongs to the technical field of wind driven generators, overcomes the defect of poor sealing effect of the existing rubber sealing ring, and comprises an upper sealing lip and a lower sealing lip, a right sealing lip is arranged between the upper sealing lip and the lower sealing lip, and the upper sealing lip and the lower sealing lip are integrally formed. The section cutting plane of the upper sealing lip is in a triangular shape, the included angle of the two sides of the upper sealing lip is an obtuse angle, the section cutting plane of the lower sealing lip is in a long strip shape, the upper sealing lip and the lower sealing lip are arranged in a right upper inclined shape and a left lower inclined shape together, and the right sealing lip is in a long strip shape and is in smooth connection with the lower sealing lip through a concave arc. The sealing grooves are in contact with the side faces of the sealing grooves, and the sealing effect is good; a gap is formed between the right side of the bearing sealing groove and the right sealing lip and has a follow-up compensation sealing function; the lower portion of the dustproof lip is provided with the concave arc face, the dustproof lip is fully lubricated, the dustproof lip and the sealing lip are connected through the concave semicircle, and sufficient elastic space is provided for a lip opening so that the lip opening can not be torn.

The utility model belongs to the technical field of lip sealing rings, and particularly relates to a lip sealing ring of a new energy automobile, which comprises a sealing ring body, a plurality of groove bodies are arranged on the surface of the sealing ring body, the groove bodies are used for increasing the number of contact surfaces generated when the sealing ring body is used for sealing, and a cavity is arranged inside the sealing ring body. The cavity is used for containing lubricating materials, a plurality of through holes are formed in the sealing ring body in a penetrating mode and communicated with the cavity, the sealing ring body is provided with a top face, a bottom face, an inner wall and an outer wall, and the groove bodies are arranged on the inner wall and the outer wall of the sealing ring body. The lubricating material in the cavity is conveyed to the surface of the sealing ring body through the through holes, so that the friction force borne by the surface of the sealing ring body is reduced, the friction resistance between the first sealing ring and the inner wall of the engine is reduced, the friction damage speed of the first sealing ring is reduced, and the service life of the sealing ring body is prolonged.

The invention discloses a self-adaptive intelligent regulation and control lip sealing device based on a slide valve mechanism. The device comprises a sealing ring body, an air spring, a rigid framework, a main air channel, the slide valve mechanism, an auxiliary lip O-shaped ring, an auxiliary lip air channel, a spoke type radial air channel and a pressure sensor. A slide valve mechanism responds to pressure fluctuation monitored by a pressure sensor, and dynamically controls gas to flow among a main gas channel, a radial gas channel and an auxiliary lip gas channel, so that self-adaptive adjustment of the holding force of a main lip part is realized: when overpressure is caused by vibration, gas is exhausted to an auxiliary lip to enhance sealing and active chip removal; and when low pressure is caused by abrasion, the holding force is recovered through air supplementation. The working mode comprises a normal cut-off state and automatic adjustment circulation, and the slide valve mechanism automatically resets after pressure balance. Control units are evenly arranged in the circumferential direction of the device, non-uniform pressure is monitored and coped independently, the exhaust-sealing-self-cleaning synergistic effect is formed, the sealing reliability and dynamic stability are remarkably improved, and the service life is remarkably prolonged.

The utility model relates to a low-temperature two-way lip-shaped sealing floating ball valve which comprises a valve body, a valve cover, a ball body, a valve seat, a valve rod, a support and a transmission mechanism, the valve seat is of a floating structure, the support is of a lengthened structure, and a heat insulation plate is arranged in the middle of the support. Composite sealing devices composed of sealing washers and pressure self-sealing devices are arranged between the valve body and the valve deck and between the valve body and the support respectively, medium pressure pushes wedge-caulking rings of the pressure self-sealing devices to open sealing between the two sides of elastic expanding and shrinking rings and the valve body, between the valve deck and the support and between the valve body and the support, and self-sealing between the valve body and the valve deck and between the valve body and the support is achieved. The problem that the sealing performance between the valve body and the valve cover and between the valve body and the support is reduced due to shrinkage of the sealing washer under the low-temperature working condition is solved, and zero leakage is achieved. The sealing device is reliable in sealing performance and suitable for working conditions of low-temperature media such as liquid nitrogen, liquid oxygen and liquefied natural gas.

The invention discloses a pneumatic clamping pressing type emergency valve for a sliding plug door. The pneumatic clamping pressing type emergency valve comprises an upper support assembly, a lower support, an elastic check ring for a shaft, a pressing valve, a lip-shaped sealing ring, a button, a button compression spring and a screw. The upper support assembly and the lower support are connected in a clamping mode, and the lower support can work independently after the upper support assembly is detached. The lip-shaped sealing ring is used for guiding and preventing water for the button; the button is reset through the button pressure spring; the elastic check ring for the shaft is clamped in the groove of the button to prevent the button from falling off, and the matched stroke of the button and the pressing valve is guaranteed. Compared with a knob type emergency valve, self-resetting can be achieved, resetting through a knob is not needed, the operating force is low, and the unlocking efficiency of the emergency valve is greatly improved; meanwhile, on the basis of an integrated pressing type structure, a detachable clamping function is added.

A solenoid valve according to an embodiment of the present invention is installed in a valve block and controls flow between a first flow path and a second flow path of the valve block. The solenoid valve includes: a seat member having an orifice that fluidly connects the first flow path and the second flow path; an armature configured to selectively open and close the orifice through a forward and backward movement so as to selectively form a main flow path connecting the first flow path and the second flow path; a magnet core configured to provide a driving force capable of causing movement of the armature for selective formation of the main flow path; a filter member installed so as to filter out impurities contained in oil flowing between the first flow path and the second flow path; and a check valve structure configured to form a unidirectional auxiliary flow path connecting the first flow path and the second flow path. The check valve structure includes: one or more oil passages provided in the filter member; and a lip seal disposed in a space connected to the oil passage. The lip seal is disposed in a space between the filter member and the valve block so as to be installed in a state supported by the filter member and the valve block.

To provide a lip seal device that can prevent the rotation of the sealing member over a long period of time. [Solution] The device comprises an annular sealing member 2 having a base portion 21 positioned on the fixed-side element 3 side and a lip portion 22 positioned on the rotating-side element 5 side, and a sleeve 4 that sandwiches the base portion 21 together with the fixed-side element 3, and the rotation of the sleeve 4 and the fixed-side element 3 is restricted by anti-rotation means 342, 432.

The utility model discloses a fan-shaped air cylinder, which relates to the technical field of air cylinders and comprises two fan-shaped air cylinder shells, an integrated blade is arranged between the two fan-shaped air cylinder shells, and rotating shafts are arranged at two ends of the integrated blade. The fan-shaped air cylinder adopts a two-way lip-shaped sealing structure and is provided with a spring steel sheet and a pressing plate, the structure is firm and durable, compressed air enters an air groove to enable the lip-shaped seals to expand towards the periphery to achieve zero leakage, a lubricating oil groove is formed between the lip-shaped seals on the two sides, lubricating oil rotates along with a piston, the lubricating effect is good, friction force is reduced, and the service life is prolonged. The service life of the sealing ring is prolonged, the torque is large, the rotating shaft does not need to use the sealing ring, leakage is avoided, the conical roller bearing is arranged on the fan-shaped air cylinder shell, the conical roller bearing can bear axial force and radial force at the same time, the blade rotating shaft can be effectively positioned, and the service life of the blade rotating shaft is prolonged. And abrasion of the lower edge sealing ring and scratching of the cylinder wall caused by sinking generated by the dead weight of the blades are prevented.

The present disclosure discloses a pipe and coupler assembly (100) made of polyvinyl chloride. The assembly includes a pipe (101) having a first end (101a) and a second end formed with a plurality of external threads (102). The assembly includes a coupler (103) comprising a first coupling end and a second coupling end having a plurality of internal threads (104). The first end of the pipe is non-removably coupled to the first coupling end. A locking means (107) is inserted into a first annular groove (105) formed in the first coupling end to secure the first end of the pipe to the first coupling end.Further, a second annular groove (108) is defined in the flat portion (103c) of the coupler, and a first multi-lip sealing ring (109) is housed in the second groove (108) to form a sealing gasket between the first end of the pipe and the first coupling end.

This invention relates to the field of sealing technology and discloses a method for predicting dynamic leakage channels in rotary seals at high-pressure rotor shafts of aero-engines, considering viscoelasticity. The invention includes the following steps: constructing a fully coupled viscoelastic-temperature-centrifugal constitutive model; establishing and solving a multi-field coupled dynamic simulation model; dynamically characterizing the leakage channel and identifying critical parameters; and finally outputting the predicted results of the dynamic leakage channel and the sealing safety boundary. This provides a quantitative theoretical basis for the anti-leakage design and reliability assessment of lip seal structures in aero-engines. By constructing a fully coupled viscoelastic-temperature-centrifugal constitutive model, this invention integrates hyperelasticity, broadband viscoelasticity, and temperature effects to accurately quantify the phase lag angle under high-frequency operating conditions. It clarifies the core mechanism of viscoelastic hysteresis leading to dynamic lip follow-up failure, achieving a profound revelation of the physical root cause of dynamic leakage channel formation and overcoming the limitation of traditional static theory in explaining high-speed dynamic seal failure.

The invention discloses a conveying mechanism for ship tail shaft accessory machining, relates to the field of ship accessory machining and conveying, and solves the problems that when an existing conveying mechanism for ship tail shaft accessory machining is used for conveying large lip-shaped sealing rings, it is difficult to efficiently convey the large lip-shaped sealing rings, and meanwhile the equipment size is reduced. The sealing ring conveying device comprises a base and a conveying mechanism, the conveying mechanism comprises a conveying belt, conveying plates and a supporting piece, the conveying belt on the conveying mechanism drives the multiple sets of conveying plates to conduct circulating conveying, and when the conveying plates are located at the upper side position, the conveying plates are adjusted to be in an inclined state; the linkage supporting pieces are automatically opened and closed to support the lip-shaped sealing rings, after the conveying plates reach one end of the base, the conveying plates are gradually controlled to turn over, the lip-shaped sealing rings above are unloaded, when the conveying plates reach the position below the conveying belt, the multiple sets of conveying plates are attached to each other to be close to the bottom face of the conveying belt, and the overall height of equipment is reduced.

The utility model relates to a rubber lip seal and lip seal snap spring assembly tool which comprises a press bottom plate, a lip seal press-fitting pump positioning assembly, a rubber lip seal containing box, a start button and a press body, wherein the lip seal press-fitting pump positioning assembly is fixed above the press bottom plate and used for positioning a compressor, and the rubber lip seal containing box is used for containing a lip seal. And a pressure head transition plate driven by a driving cylinder is arranged on one side of the press body. The utility model relates to the technical field of assembly of rubber lip seals and lip seal snap springs. According to the rubber lip seal and snap spring integrated assembly tool, after the pressing head assembly makes contact with the lip seal snap spring, pressure is continuously exerted on the pressing head assembly, the lip seal snap spring shrinks and moves downwards along the lip seal snap spring guide-in tool, the pressing head assembly is continuously pressed downwards to make contact with the lip seal snap spring guide-in tool, a rubber lip seal and the lip seal snap spring are pressed in place, and assembly is completed; and the pressure head assembly is in contact with the clamp spring guide-in tool for limiting, so that the lip seal is prevented from being damaged due to too deep pressing, and the mounting precision is ensured when the rubber lip seal and the lip seal clamp spring can be quickly and effectively mounted.

The utility model discloses an oil film bearing axial module combination multi-lip sealing device which comprises a sealing cover, a water seal, an aluminum ring and an annular rubber sealing device, the sealing cover is installed on a bearing seat, the water seal is installed on the sealing cover, and a rubber lip of the water seal is matched with the end face of a roller in a sealing mode. The annular rubber sealing device is arranged on the roller neck conical surface of the roller in a sleeved mode, the left side and the right side of the annular rubber sealing device are axially positioned through the aluminum ring and a conical sleeve of the oil film bearing respectively, and the annular rubber sealing device can be in sealing fit with the roller neck conical surface and the inner hole face of the sealing cover respectively. The annular rubber sealing device is composed of an annular rubber sealing module A, an annular rubber sealing module B and an annular rubber sealing module C which are sequentially arranged from left to right, and the annular rubber sealing module A, the annular rubber sealing module B and the annular rubber sealing module C are in axial positioning connection. When the annular rubber sealing device is installed and used, the posture of the annular rubber sealing device is relatively stable, and the sealing effect is better.

The utility model relates to polycarbonate reactor technical field, concretely relates to a kind of polycarbonate final polymerization reactor shaft seal disassembly tool, including fixed base, U-shaped movable plate, reaction shaft main body, lip seal, clamping plate, top plate and first pull plate, the U-shaped movable plate is set in the top of fixed base, the reaction shaft main body is set in the top of U-shaped movable plate, the lip seal is set in the inside of reaction shaft main body, the clamping plate is set in the inside of lip seal;Second screw is installed by the second threaded hole of top plate top, second screw can be stably connected with top plate, then second screw is penetrated first pull plate, when adjusting nut outside second screw is evenly fastened, the height of top plate changes, lip seal is slowly ejected with the spacer ring on it by top plate, it is convenient to disassemble and assemble the spacer ring and lip seal of polycarbonate final polymerization reactor shaft seal, and the outer surface of lip seal and spacer ring is not damaged in disassembly process, and the practicality is higher.

The application belongs to the technical field of seal component design, and discloses a high-speed dynamic seal rotary joint suitable for super-low-temperature fluid, which mainly comprises a static shaft, a rotary shell, a super-low-temperature seal ring, a guide ring and a check ring. The high-speed dynamic seal rotary joint suitable for super-low-temperature fluid is used to realize the integration of the blocking flow, the labyrinth and the multi-stage lip seal structure in the limited space. The shrinkage deformation of the super-low-temperature seal ring in the super-low-temperature environment can be obviously inhibited by optimizing the base material of the super-low-temperature seal ring and additionally arranging the anti-shrinkage ring structure. The interference amount of the matching surface of the super-low-temperature seal ring is reasonably adjusted, so that the close contact of the lip seal interface in the super-low-temperature environment is ensured.

The utility model relates to lip seal ring technical field, concretely is a kind of lip seal ring, including static seal, the both sides of static seal are provided with upper sealing end and lower sealing end, extrusion layer is provided on the inner wall of static seal, extrusion layer is connected with dynamic seal, loading groove is set up on dynamic seal, extrusion ring is set in loading groove, loading groove can bear extrusion ring by being set on dynamic seal, dynamic seal tight fitting surface and equipment are tightly attached under liquid low pressure state by extrusion ring, so that it guarantees certain sealing, can further improve the sealing property of dynamic seal tight fitting surface and equipment under liquid high pressure state.

The utility model discloses a sealing structure, including the body, the body center is equipped with the axle hole, the axle hole is used for the main shaft of wearing, the axle hole top is equipped with the mounting groove, be equipped with a plurality of tetrafluoro lip seal in the mounting groove, the tetrafluoro lip seal includes the framework and the inner ring, the framework is circular ring shape, the inner ring sets up in the inside of framework, the inner side of inner ring is equipped with a plurality of lip edge, the sealing structure of the utility model adopts a plurality of tetrafluoro lip seal to the gap between sealing main shaft and body, simple structure, convenient installation, and the lip edge of tetrafluoro lip seal has the elasticity, has the self -compensation ability after wearing, therefore can always contact with the main shaft, need not regular maintenance and the service life is longer than the filler seal.