378 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 invention discloses a loadable telescopic universal shaft, a transmission device of a rolling mill and application of the transmission device in a silicon steel wire, and relates to the technical field of couplings. The driving end unit, the shaft body unit and the execution end unit are connected in sequence; the shaft body unit comprises a spline pair assembly, a protection assembly and an elastic assembly. The spline pair assembly comprises a spline sleeve, a spline shaft, a gland and a tooth-shaped sealing ring, the elastic assembly penetrates through the spline shaft and the spline sleeve, and the spline shaft is inserted into the spline sleeve; the tooth-shaped sealing ring is fixed to the right side of the spline housing through the gland, and dynamic sealing between the spline housing and the spline shaft is achieved. The gland extends upwards to form a protruding part and exceeds the end face of the outer circle of the spline housing. A lip-shaped sealing ring is arranged in the sealing cover, and the inner circle and the outer circle of the lip-shaped sealing ring are matched with the outer circle of the spline housing and an inner hole of the protective cover respectively; and a ventilation plug is arranged on the protective cover, so that an air path in the protective cover is smooth.

The utility model discloses a conductive combined seal, which comprises a metal conductive oil seal, a single-lip seal and a metal framework, the metal conductive oil seal and the single-lip seal are both buckled on the metal framework, and an oil seal spring for performing radial force compensation on a lip is arranged on the inner side of the metal conductive oil seal. An oil seal lip is arranged at the upper end of the outer side of the metal conductive oil seal, a dustproof lip is arranged at the lower end of the outer side of the metal conductive oil seal, a sealing lip is arranged at the end of the outer side of the single-lip seal, and a copper net is clamped in the sealing lip. The bearing can improve the sealing reliability, has a multi-lip sealing effect, and has the characteristics of strong internal and external power-on function, reduction of electric corrosion in the bearing, strong external medium prevention function and prevention of the interior from being polluted by external impurities.

The invention relates to a sealing structure, in particular to a combined sealing structure for an output shaft of a marine gearbox. The problem that an existing sealing component can cause leakage under the conditions that an output shaft is static, low in speed, large in lubricating oil amount, too large in oil pressure and the like is solved. A three-stage combined sealing structure is formed by the oil slinger, the labyrinth sealing ring and the lip-shaped sealing assembly. The oil slinger arranged on the output shaft is simple in structure, convenient to transform and good in economical efficiency. The labyrinth sealing ring not only can meet the sealing requirement of a rotating part, but also has self-adaptive flexural deflection, and can be automatically adjusted in a limited manner, so that a good sealing effect is achieved. The lip-shaped sealing assembly structurally achieves the bidirectional sealing effect, internal lubricating oil can be sealed, and water, dust, silt and other external impurities are prevented from entering the gearbox. Through the application of the combined sealing structure, leakage is reduced step by step. The invention belongs to the technical field of gearbox sealing.

A sealing member includes a monolithic body including a first portion adjoining a second portion. The first portion forms part of a circle. The second portion includes first and second lobes. Each lobe adjoins the first portion with a concave surface. In one example, each lobe includes a rounded tip, and a convex surface extends from one rounded tip to the other rounded tip.

The invention belongs to the technical field of positive displacement vacuum pumps, and particularly relates to a sealing mechanism of a vacuum pump, which comprises a labyrinth seal and a piston ring seal, the left and right sides of the labyrinth seal and the piston ring seal in the axial direction are respectively provided with an oil cavity and a pump cavity; the radial inner and outer sides of the labyrinth seal and the piston ring seal are respectively provided with a rotor shaft in a pump cavity and an oil tank side sealing plate in an oil cavity; the labyrinth seal comprises a labyrinth seal moving ring and a labyrinth seal static ring, the labyrinth seal moving ring is arranged on the rotor shaft in a sleeving mode and is in linkage with the rotor shaft, and the labyrinth seal static ring is arranged on the labyrinth seal moving ring in a sleeving mode and is fixedly connected with the oil tank side sealing plate; the piston ring seal comprises at least one piston ring; a piston groove is formed in the rotor shaft; or the rotor shaft is sleeved with a piston shaft sleeve, and a piston groove is formed in the outer surface of the piston shaft sleeve; the piston ring is accommodated in the piston groove. Non-contact sealing is completely adopted, the problems of friction heat generation, friction abrasion and the like of a contact lip seal are avoided, the use power consumption of the pump body is reduced, and the quality inspection cost and the manufacturing cost are reduced.

The utility model relates to a composite sealing roots vacuum pump device which comprises a pump body, a front end cover is arranged at the front end of the pump body, a rear end cover is arranged at the rear end of the pump body, a composite sealing structure is arranged between the front end cover and a main shaft, and the same composite sealing structure is arranged between the rear end cover and the main shaft. The composite sealing structure comprises a lip-shaped seal, a ceramic shaft sleeve, a mechanical seal, a lubricating oil inlet and a dry gas seal inlet, the ceramic shaft sleeve and a main shaft sleeve are arranged between the main shaft and the front end cover, the main shaft is sleeved with the ceramic shaft sleeve and the main shaft sleeve, the ceramic shaft sleeve is arranged close to the pump body, and the main shaft sleeve is arranged close to the bearing; a lip seal is arranged between the ceramic shaft sleeve and the front end cover, and a mechanical seal is arranged between the main shaft sleeve and the front end cover; the front end cover is provided with a lubricating oil inlet and a dry gas seal inlet. According to the utility model, the lip seal and the ceramic shaft sleeve are matched with each other, and mechanical seal and dry gas seal are combined, so that high-reliability composite seal is formed, and oil leakage of the roots vacuum pump is avoided.

TITLE OF THE INVENTION: DEVICE FOR STOPPING A LEAK FLOW ON A FLUID PIPELINE The device (30) for stopping excess flow of a leak on a fluid pipeline comprises: - a seal holder (39) comprising a tubular channel, - a shutter (35) facing the upstream end of the tubular channel, - an anchoring means (37) configured to anchor the seal holder in the predetermined pipeline, - a lip seal (40) impervious to the fluid flowing in the pipeline, elastically deformable to a deployed configuration in which the radial extension of the lip seal is greater than the radial section of the predetermined pipeline, and - a retaining ring (41) of the lip seal, which comprises a cylindrical central part fixed relative to the seal holder and radial fins extending from the central part.At least one fin of the retaining ring has, in its free radial deployment configuration, a generally planar shape in a symmetrical trapezoid whose base is located on the central part, the free radial extension of the fins being equal to or greater than the radius of the predetermined pipeline. Figure for abstract: figure 1.

A vacuum table for supporting and flattening an electronic component includes a base plate structure comprising a top surface defining a plurality of suction arrangements. The vacuum table also includes a plurality of lip seals operatively coupled to the base plate structure and extending upwardly beyond the top surface of the base plate structure, the plurality of lip seals arranged to define a plurality of portions of the vacuum table, wherein each of the plurality of portions of the vacuum table includes at least one of the plurality of suction arrangements therein.

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 utility model provides a cleaning and protecting structure for an image recognition camera. The structure comprises a fan-shaped window, a windscreen wiper assembly and a blowing assembly. According to the utility model, multi-stage sealing of the O-shaped sealing ring, the rotating shaft lip-shaped sealing ring and the lubricating grease is adopted for a transmission part, so that multiple protection is provided; the O-shaped sealing ring can preliminarily block particles, water slime and the like, the lubricating grease and the lip-shaped sealing ring can block water, meanwhile, lubrication is guaranteed, the reliability of equipment is improved, and the service life of the equipment is prolonged; and the fan-shaped window can be cleaned by high-pressure air flow or water flow through the blowing assembly, so that the cleaning effect is improved.

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.

The invention relates to the technical field of sealing structures, and particularly provides a lip sealing structure optimization method and equipment, a medium and a computer program product. The lip seal structure optimization method comprises the following steps: defining texture parameters of a lip seal to be optimized; fluid-solid-heat multi-field coupling analysis is conducted on the texture parameters of the lip seal to be optimized, and sealing performance parameters are obtained; determining a plurality of to-be-optimized texture parameter intervals based on the texture parameters and the sealing performance parameters; and optimizing the plurality of to-be-optimized texture parameter intervals by adopting a genetic algorithm to obtain a target texture parameter combination. According to the method, the sealing performance parameters are obtained through fluid-solid-heat multi-field coupling analysis, parameter optimization is conducted in combination with the genetic algorithm, accurate optimization of the lip sealing texture is achieved, and the sealing performance of the lip sealing piece is improved.

Some example embodiments may relate to laterally moveable compressor piston rod lip seals. For example, a piston rod lip seal assembly may include a lip seal including a circumferential lip configured to seal an inner diameter of the lip seal. The piston rod lip seal assembly may be configured for lateral motion of a piston rod within a housing component, and the lateral motion may be perpendicular to an axis of the piston rod. The piston rod lip seal assembly may further include a heel, a circumferential outer ring, and a spring. The spring may be disposed between, and in contact with, the circumferential lip and the circumferential outer ring. The piston rod lip seal assembly may further include a wave spring configured for face contact with a housing component.

The invention discloses an integrated buffering and sealing engineering machinery oil cylinder, and relates to the technical field of oil cylinders, the integrated buffering and sealing engineering machinery oil cylinder comprises a cylinder body, a piston and a piston rod, the outer side of the piston is provided with a buffering and sealing assembly, the buffering and sealing assembly comprises a buffering column arranged at the front end and two lip-shaped sealing rings, and the bottom of the cylinder body is provided with a base. A buffer groove is formed in the base, and a throttling hole is formed in the base. The device has the advantages that through the integrated design of buffering and sealing structures, multi-stage attenuation of impact loads, dynamic adjustment of sealing force and self-adaptive control of oil flow are achieved, the throttling hole diameter is dynamically adjusted through hydraulic pressure in a cylinder, the multi-stage buffering structure is matched, impact pressure is reduced, and meanwhile the service life of the device is prolonged. A temperature self-adaptive flow control system can intelligently adjust the flow speed according to the viscosity change of hydraulic oil; under the high-temperature working condition, the sealing tightness is actively enhanced, and leakage is effectively inhibited; starting parameters are automatically optimized in a low-temperature environment, and the response speed of equipment is increased.

The invention relates to a mechanical sealing structure for a shaft end of a compressor and a sealing, lubricating and cooling method. The compressor is characterized in that the compressor comprises a movable ring, a static ring and a lip-shaped sealing ring, an oil storage cavity and an oil supply ring cavity are formed in a compressor shell, the oil storage cavity and a rotor cavity are separated through a separation convex ring, and the lip-shaped sealing ring is installed between the separation convex ring and a compressor rotor; the movable ring and the static ring are both located in the oil storage cavity, the movable ring is fixed to a compressor rotor, the static ring is fixed to a compressor shell, a sealing convex ring on the movable ring abuts against a sealing plane of the static ring to form a mechanical sealing face, an inlet of the oil supply ring cavity is connected with an external high-pressure oil supply pipe, and a plurality of oil spraying openings are formed in the wall face between the oil supply ring cavity and the oil storage cavity. And the oil injection port is obliquely arranged and is aligned with the mechanical sealing surface. The sealing device is reasonable in structural design and good in sealing, lubricating and cooling effects.

A rotary union that includes one or more lip seals is disclosed. The rotary union includes a rotary union shaft and a rotary union housing that surrounds the rotary union shaft. Heaters are disposed on the outer surfaces of the rotary union shaft and the rotary union housing. Additionally, a low thermal conductivity path is created between the center portion of the rotary union housing, where the lip seals are located, and the base of the rotary union housing, which contacts the cryogenic fluid. This low thermal conductivity path allows the lip seals to remain sufficiently warm so as to ensure good seal performance and reduced leakage.

The invention relates to a lip wear monitoring system for a lip seal of a rotating shaft, the lip wear monitoring system comprises an elastic conductor sheet (1), an insulating layer (2), the lip seal (3), leads (4) and (5), a measuring module (6), an indicating lamp (7), the rotating shaft (8), a lower support ring (9), an upper support ring (10) and a cavity (11), the elastic conductor sheet (1) and the lead (4) are connected and conducted, the lead (5) and the rotating shaft (8) are connected and conducted through an electric brush, and the measuring module (6) is connected and conducted with the cavity (11). And the elastic conductor sheet (1) is isolated from the rotating shaft (8) by the lip seal (3). The sealing lip abrasion monitoring system is reliable, sealing replacement can be prompted in advance before sealing leakage, bearing damage caused by leakage is prevented, precious preparation time is won for sealing replacement, maintenance time is shortened as much as possible, shutdown loss is reduced, and the sealing lip abrasion monitoring system is particularly suitable for the conditions, needing sealing abrasion monitoring, of shield tunneling machines, ship tail shaft seals and the like.

A seal assembly for a multi-port valve assembly, the seal assembly including a plurality of beads integrally formed as part of a rotor, at least one seal element in sliding contact with one or more of the beads, and at least one lip seal integrally formed as part of the seal element. One or more of the beads applies force to the seal element, such that the force is transferred to the lip seal. The beads include at least one circumferential bead which circumscribes the rotor, and the circumferential bead continuously applies force to the seal element when the rotor is in each of a plurality of orientations. The beads also include at least one tangential bead extending along an outer surface of the rotor, and the tangential bead applies force to the seal element when the rotor is in one of a plurality of orientations.

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 sealing member includes a unitary body including a first portion adjacent a second portion. The first portion forms a portion of a circle. The second portion includes first and second lobes. Each lobe adjacent the first portion with a concave surface. In one example, each lobe includes a rounded tip and a convex surface extends from one rounded tip to the other rounded tip.

The present application discloses a bearing seat oil seal for a main valve of a steam turbine, which relates to the field of steam turbines. The oil seal comprises an annular body, an annular metal frame buried in the body, and an annular lip-shaped sealing portion arranged inside the body, wherein the body is made of hydrogenated nitrile rubber, one axial side of which is the oil side, and the other side is the air side; a dustproof lip is extended from the lower end of the body to the air side; the lip-shaped sealing portion is made of fluororubber, which is connected to the lower end of the body through a connecting arm and is inclined to the oil side; the lower end of the lip-shaped sealing portion comprises an oil side lip surface facing the oil side and an air side lip surface facing the air side, and the oil side lip surface and the air side lip surface are connected to the sealing edge at the lower edge to form a lip end. The oil seal adopts composite materials, introduces a multilayer structure and improves the sealing shape, which can significantly improve the sealing effect and durability of the oil seal. This can not only improve the working efficiency of the steam turbine, but also reduce the maintenance frequency and reduce resource waste.

The utility model relates to a self pressure relief lip-shaped sealing valve seat structure which comprises a valve seat and a valve body, one end of the valve seat is sequentially provided with a first step groove, a second step groove and a third step groove, the other end of the valve seat is provided with a valve seat sealing ring in a pressing mode, an elastic piece is connected between the first step groove and the valve body in a pressing mode, and the elastic piece is connected with the valve body in a pressing mode. A first stepped groove is clamped in the valve body, a second stepped groove is clamped in the first stepped groove, a lip-shaped sealing assembly is connected between the second stepped groove and the valve body in a pressing mode, a metal check ring is clamped in the third stepped groove, the metal check ring is connected with the lip-shaped sealing assembly in a pressing mode, the horizontal distance between the first stepped groove and the valve body is L1, and the horizontal distance between the third stepped groove and the valve body is L2. The self-pressure-relief lip-shaped sealing valve seat structure has the advantages of automatically relieving pressure, improving the safety of the valve, simplifying the structure, being convenient to install and the like.

The utility model relates to the technical field of combined oil seals, and discloses a combined oil seal with a stable outer diameter structure, which comprises an oil seal assembly, the oil seal assembly comprises a mounting outer ring, a lip sealing ring A is fixedly connected to the inner side surface of the mounting outer ring, a spring is fixedly connected to one side of the lip sealing ring A, a supporting steel frame A is fixedly connected to one side of the lip sealing ring A, and a supporting steel frame B is fixedly connected to the other side of the lip sealing ring A; the supporting steel frame A is arranged in the mounting outer ring, the protective sleeve is arranged on the surface of the outer side of the mounting outer ring, the supporting steel frame B is arranged in the mounting outer ring, one end of the supporting steel frame B is fixedly connected with the lip sealing ring B, and the mounting inner ring is fixedly connected to the surface of the outer side of the lip sealing ring B. Through the arrangement of the oil seal assembly, the oil seal assembly can seal the oil seal. The protective sleeve is of a rubber half-wrapping design, the sealing performance of the protective sleeve is guaranteed, the better stable and accurate assembling characteristic is achieved, the combined part oil seal can effectively block impurities in sealing media, and therefore the service life of the oil seal is prolonged while the effect of protecting the main lip opening is achieved.

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.

The utility model discloses an axial dynamic pressure floating spiral gear pump. The axial dynamic pressure floating spiral gear pump comprises a pump body, a front cover plate, a rear cover plate, an O-shaped sealing ring, a cylindrical pin, a driving gear shaft, a driven gear shaft, a front 8-shaped sleeve, a rear 8-shaped sleeve, a shaft sleeve, a lip-shaped sealing piece and a circlip for a hole. Compared with the prior art, medium-pressure liquid of the gear pump is introduced through the oil grooves in the upper side and the lower side of the front 8-shaped sleeve, and a power floating lubricating layer is formed at the front cover end of the gear; high-pressure oil introduced into the gear pump through an arc-shaped oil groove and an auxiliary oil groove in the rear 8-shaped sleeve is divided into two different areas, a gear shaft is pushed to the front side, and axial force generated by hydraulic pressure and rotation is counteracted; the special-shaped sealing ring in the rear end cover can seal the high-pressure oil on the inner side, the rear 8-shaped sleeve is pushed from the rear side, the rear 8-shaped sleeve is attached to the gear, and dynamic pressure sealing is formed.

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.