51 results about "O-ring" patented technology

The utility model discloses a feeding device for sensor assembly. The feeding device comprises a bottom frame, a vertical plate and a movable base. A mounting cylinder is arranged at the top of the bottom frame, an O-shaped ring vibration disc is arranged in the mounting cylinder, a material supplementing frame is arranged on one side of the O-shaped ring vibration disc, and a channel is formed between the material supplementing frame and the O-shaped ring vibration disc; the feeding mechanism is driven to quickly move in the horizontal direction and the vertical direction through cooperative work of a plurality of air cylinders, so that O-shaped rings are quickly grabbed and transferred by the negative pressure suction device, and the feeding time is greatly shortened; o-shaped rings are automatically and orderly arranged through the O-shaped ring vibration disc, the O-shaped rings are supplemented in time in cooperation with the material supplementing frame, and continuous supply of the O-shaped rings is guaranteed; the feeding precision is improved through positioning formed by a positioning seat, a positioning block, a telescopic rod and a spring; the feeding process is monitored in real time through the scanner, problems are found and fed back and adjusted in time, and the operation reliability of the whole feeding device is further improved.

The utility model discloses a solenoid valve driver, including socket combination - shell assembly and the circuit board - shell cover assembly that is connected with socket combination - shell assembly through shell cover screw (31), socket combination - shell assembly includes shell (1) and the socket combination (2) that is connected with shell (1), socket combination (2) includes socket (21), the plug (22) that is connected with socket (21), pin (23), socket screw (24) for fixing socket (21) on shell (1) and set up between socket (21) and shell (1) O ring (25), the circuit board - shell cover assembly includes the shell cover (3) that is connected with socket combination - shell assembly, sets up the circuit board (4) of shell cover (3) near shell one side and sets up cable (5) on the other side of shell cover (3). The utility model provides a solenoid valve driver can reach better sealing stability.

The present application discloses an atomizing body assembly and a soft mist inhalation device with improved sealing performance. The atomizing body assembly includes a T-shaped steel member, a chip-mounting part, a filter cartridge, and a medium-sized O-ring. The chip-mounting part, the medium-sized O ring and the filter cartridge collectively form a sealing structure.

The utility model relates to pilot proportional pressure reducing valve technical field discloses a pilot proportional pressure reducing valve of detachable spring seat, including shell, valve core, spring seat, valve core spring, hole steel wire baffle ring, steel ball seat, steel ball and electromagnetic control assembly, the electromagnetic control assembly contains coil framework, enameled wire, armature and gap sleeve, the valve core passes through displacement control P mouth to A mouth's oil circuit opening degree, spring seat adopts clearance fit with valve sleeve, and the cooperation clearance is 0.02 0.05mm, and is fixed by the hole steel wire baffle ring of axial installation limit, the hole steel wire baffle ring is embedded in the annular groove of shell inner wall, and the detachable type constraint spring seat axial displacement is established, be equipped with third O ring between steel ball seat and shell, the outside of P mouth is connected with filter screen, through setting spring seat, valve sleeve and hole steel wire baffle ring, spring seat adopts clearance fit (0.02 0.05mm) plus hole steel wire baffle ring limit with valve sleeve, thoroughly avoid the hole deformation caused by traditional interference pressurization.

A valve element assembly is arranged in a valve body, a valve seat assembly is arranged in the valve body, the valve seat assembly and the valve body are in conical surface fit, the valve seat assembly comprises a valve seat supporting seat, a valve seat damping gasket is arranged on the valve seat supporting seat, a valve seat sealing ring is arranged on the valve seat damping gasket, and a valve seat pressing ring is arranged on the valve seat supporting seat. The valve seat pressing ring is in threaded connection with the valve seat supporting seat, the valve seat sealing ring and the valve seat damping gasket are pressed on the valve seat supporting seat, a first valve seat O-shaped ring and a second valve seat O-shaped ring are arranged on the valve seat supporting seat, a threaded hole is further formed in the valve body, and the threaded hole is communicated between the first valve seat O-shaped ring and the second valve seat O-shaped ring. The space among the valve body, the first valve seat O-shaped ring, the second valve seat O-shaped ring and the valve seat supporting seat is vacuumized through exhaust of the threaded holes, the valve seat assembly is fixed to the valve body, particles and silt can be discharged through the pressure relief and silt discharging holes, the hard sealing face is always located in a medium guide line through the upper guide angle and the lower guide angle, and the hard sealing face is prevented from being directly scoured by media.

The invention discloses a double valve seat structure with independent seal, which comprises a valve seat, a ball and a valve body. The valve seat is composed of a small valve seat and a big valve seat. The outer periphery of the back end of the small valve seat is a stepped shaft, which is matched with the inner cavity of the big valve seat. The one end surface of the stepped shaft is in contact with the loading spring I installed in the inner cavity of the big valve seat. The other end surface of the stepped shaft is sealed with the inner cavity of the big valve seat through O ring I. The front end of the small valve seat is connected with the ball through the first reseal triangle seal ring I. The front end of the big valve seat is connected with the ball through the second reseal triangle seal ring II. The back end of the big valve seat is sealed with the valve body through O ring II, and is in contact with the loading spring II installed on the valve body. The invention is suitable for the working condition of special and difficult sealing medium, such as hydrogen, and has simple structure and strong practicability.

The utility model belongs to the technical field of oil seals, and particularly relates to a combined oil seal which comprises a transmission shaft, a wear-resisting clamping plate is arranged on the outer side of the transmission shaft, a telescopic rod is fixedly connected to one end of the wear-resisting clamping plate, a contact block is fixedly installed at one end of the telescopic rod, and an outer sealing ring is arranged on the outer side of the contact block. An inner rubber sealing ring is arranged on the inner side of the outer sealing ring, an operator can control the pressure of a contact ball and an O-shaped ring on a contact block through matched use of an adjusting handle 17, a first guide column and a first spring, so that the oil seal can meet the sealing requirements under different working conditions, and meanwhile, when the dustproof shell is damaged, the operator can adjust the pressure of the contact ball and the O-shaped ring to the contact block through the adjusting handle. According to the oil seal device, the contact ball can easily slide out of the dustproof shell under the matching action of the first guide column and the first spring, then the dustproof shell can be conveniently and independently replaced, the whole oil seal device does not need to be replaced, the downtime of equipment is effectively shortened, and the practicability of the oil seal and the operation efficiency of the equipment are improved.

The utility model belongs to the technical field of valves, and discloses an unloading type high-pressure manual stop valve which comprises a valve body, the valve body is connected with a valve cover through a connecting piece, a valve seat is arranged in the valve body, a sealing face is arranged on the valve seat, a valve clack matched with the valve seat in a sealing mode is further arranged in the valve body, and a sealing face is arranged on the conical face of the valve clack. The sealing face of the valve seat and the sealing face of the valve clack are connected to form a sealing pair, one end of the valve clack is connected with a valve rod, the other end of the valve rod is fixedly connected with a hand wheel, and a first O-shaped ring and a first check ring are installed on a groove of the valve clack to form radial dynamic sealing with the valve deck. A groove of the valve rod is provided with a first O-shaped ring and a first check ring, and the first O-shaped ring and the first check ring form radial dynamic sealing with the valve body. An unloading type structure is adopted, the valve rod is free from the action of gas pressure in the moving process, manual operation is reduced, and operation is convenient; the valve clack and the valve rod are in spherical connection through the T-shaped groove, and the service life of the soft sealing valve seat is greatly prolonged.

The utility model discloses a spring seal O-ring mounting jig, which is characterized in that a positioning part is arranged on the top wall of a lower die for sleeving a spring seal which needs to be provided with an O-ring and positioning the spring seal, a first annular component is arranged on the bottom wall of an upper die, and the first annular component corresponds to a groove which is formed in the spring seal and is used for mounting the O-ring. During installation, the spring seal needing to be provided with the O ring is arranged on the positioning part in a sleeving mode, then the O ring is placed at the position, corresponding to the groove, of the spring seal, then the upper die and the lower die are subjected to die assembly action manually or through a driving mechanism, and in the die assembly process, the first annular component makes contact with the O ring and presses the O ring into the groove, so that installation work of the O ring is achieved. Compared with the prior art, the O-ring mounting jig is simple in structure and convenient to operate, O-rings can be efficiently, quickly and accurately mounted by means of the design of the jig, the problem of damage to a spring seal is not easily caused, the production efficiency is effectively improved, and the error rate and the production cost are reduced.

The utility model relates to the field of slow -descent ware production equipment discloses a kind of slow -descent ware's O ring automatic feeding assembly device, including rack, feeding mechanism, distributing mechanism, propping mechanism and assembly mechanism;Feeding mechanism is located on rack, and it includes the feeding channel for continuously conveying O ring one by one;Distributing mechanism and propping mechanism are all located on rack, distributing mechanism is used to shift the O ring of the last end of feeding channel to propping mechanism, and propping mechanism is used to prop open O ring;Assembly mechanism is located on rack, and it is used to shift and sleeve joint the O ring on propping mechanism on the rotating shaft in rotating shaft fixture.The utility model can solve how to improve the assembly efficiency and quality of slow -descent ware O ring, and reduce the problem that the situation of slow -descent ware poor sealing caused by O ring distortion, folding and other defects appears.

The utility model relates to the technical field of anti-deformation tools, and discloses a vacuum test anti-deformation tool for a seal welding pumping source, which solves the problem that the existing pumping source possibly deforms under the action of pressure to influence an internally assembled light path, and comprises a bottom plate, a pressing mechanism is arranged on the bottom plate, and a clamping mechanism is arranged on the bottom plate. A pumping source is placed at the top of the bottom plate, an O-shaped ring is arranged at the top of the pumping source, an upper cover is arranged at the top of the O-shaped ring, the pressing mechanism comprises two side plates symmetrically fixed to the outer side of the upper cover, the bottoms of the two side plates are fixedly connected with vertical plates, and the two vertical plates penetrate through the bottom plate and are movably connected with the bottom plate. The two sides of the pumping source are symmetrically and fixedly connected with two side blocks, and the top of the bottom plate is fixedly connected with a plurality of stand columns. According to the utility model, the upper cover can move downwards, and the O-shaped ring can extrude the pumping source conveniently, so that the pumping source is compressed without being scratched, and the deformation of the pumping source caused by pressure difference can be reduced conveniently.

The utility model discloses an electric blast pump capable of rotating by 360 degrees, which comprises an air pipe assembly and a silica gel O-shaped ring, an air pipe joint is mounted at the upper end of the air pipe assembly, an air nozzle is arranged at the bottom of the air pipe assembly, a fixing nut is arranged on the rear side of the air pipe joint, the silica gel O-shaped ring is arranged on the rear side of the fixing nut, and the silica gel O-shaped ring is arranged on the rear side of the fixing nut. The rear side of the silica gel O-shaped ring is provided with an adapting ball head. According to the electric inflation pump capable of rotating by 360 degrees, the air pipe assembly and the air pipe connector are assembled and used, rotation can be achieved without dead angles, use is more convenient, the electric inflation pump is suitable for more occasions, the air flow is not affected, the rubber sleeve is convenient to assemble through sleeved connection between the rotating sleeve and the rubber sleeve, meanwhile, the rotating sleeve is rotated to be connected with the air pipe assembly, and the air pipe assembly is convenient to assemble. And the rubber sleeve plays a role in protecting the outer wall of the air pipe assembly, the inner wall of the rotating sleeve can be prevented from making direct contact with the air pipe assembly, and therefore the completeness of the air pipe assembly is guaranteed.

The utility model relates to the technical field of pipeline fittings, and discloses an anti-cavitation pressure reducing valve, which comprises a valve body, a valve rod, an O-shaped ring, a sealing ring, a valve disc, a spring, a diaphragm, a valve cover and an exhaust valve, and is characterized in that a valve seat is arranged on the valve body, the valve rod is arranged in the valve seat, the sealing ring is arranged on the valve seat, and the valve disc is arranged on the sealing ring. According to the anti-cavitation pressure reducing valve, the anti-cavitation pressure reducing valve comprises a valve body, a valve rod, an O-shaped ring, a sealing ring, a valve disc, a spring, a diaphragm, a valve cover and an exhaust valve, a valve seat is arranged on the valve body, meanwhile, a valve clack of the valve seat is designed in a cage winding mode, the cage winding type valve clack can reduce the corresponding flow speed of fluid in the using process, and therefore the valve body is protected against cavitation. The air flow caused by the reduction of the flow speed is reduced at the same time, cavitation can be well avoided, the service life of the valve body, the valve seat and the valve rod is greatly prolonged, manual exhaust operation can be carried out on the upper side of the valve cover, and the noise and vibration phenomena in the using process are reduced.

The utility model discloses a concealed sensor control valve which comprises a valve body and an actuator connected with the valve body and provided with an output shaft, a valve seat connected with a valve element and a valve rod connected with the valve element and connected to the output shaft are arranged in the valve body, and a gasket and an O-shaped ring which are connected with the inner wall of the valve body in a sealed mode are arranged on the periphery of the middle of the valve rod in a sleeved mode. The upper portion of the valve rod is sleeved with filler and a filler gland located above the filler, containing through holes which are located on the same axis, are of the same structure and are used for containing a sensor wire are formed in the axial direction of the output shaft and the axial direction of the valve rod, and a sealing plug surrounding the sensor wire is arranged at the communicating position of the two containing through holes. The inner wall of the lower end of the valve rod is connected to the sensor probe, and the inner wall of the lower end of the valve rod is connected to the sensor probe. According to the utility model, the sensor lead can be prevented from being exposed, the measurement precision of the temperature sensor in the valve body is ensured, the sensor probe is prevented from loosening when being impacted by liquid, and the sealing performance and the stability of the sensor probe are ensured.

The utility model relates to air-cooled heat pump evaporator technical field, concretely is air-cooled heat pump evaporator mechanical sealing type pipeline interface device, including evaporator body, be provided with connecting pipe on the evaporator body, the one end of connecting pipe is provided with the interface pipe, the inner wall on the one end of connecting pipe is provided with the internal thread groove, the one end of interface pipe is provided with the external thread connecting end, and the external thread connecting end is connected with internal thread groove threadedly. This air-cooled heat pump evaporator mechanical sealing type pipeline interface device, through the cooperation of evaporator body, connecting pipe, interface pipe, external thread connecting end, internal thread groove, first sealing sleeve, second sealing sleeve, O ring gasket, embedding groove, first flange and second flange, the connection of interface pipe and connecting pipe realizes three -fold sealing by first sealing sleeve, second sealing sleeve and O ring gasket, effectively prevents refrigerant leakage, improves sealing performance, ensures the normal operation of air-cooled heat pump evaporator.

Piston balance type high pressure rotary sealing device, by hollow rotating shaft 1, bearing snap spring 2, bearing spacer ring 3, hollow plug 4, sealing plate 5, high pressure resistant filling grease 6, piston outer diameter sealing ring 7, end face sealing O ring 8, transmission medium outlet 9, bearing 10, shell 11, rotating shaft diameter surface sealing O ring 12, hollow piston 13, transmission medium inlet 14. Transmission medium is from 14 inlet to 9 outlet, hollow rotating shaft 1 and hollow piston 13 divide the right cavity of shell 11 into two, make the right side of piston 13 become transmission medium sealing cavity, left side become high pressure resistant grease 6 sealing cavity, thus form balanced rotary sealing to transmission medium, at the same time, utilize the poor flowing characteristic of high temperature resistant grease, carry out multi-stage combined variable contact pressure O ring rotary sealing.

The utility model relates to the technical field of pipeline structures, and discloses a mechanical seal flushing pipeline structure of a bottom-feeding stirrer, which comprises a spacer fluid inlet pipe orifice, a static ring is arranged on one side of the spacer fluid inlet pipe orifice, a movable ring is arranged on the top of the static ring, an O-shaped ring is arranged on one side of the movable ring, a spring is arranged on the top of the O-shaped ring, and a sealing ring is arranged on the other side of the spring. The top of the spring is provided with a shaft sleeve, one side of the shaft sleeve is provided with a bolt, the bottom of the bolt is provided with a filler seal, and the bottom, communicated with the spacer fluid outlet pipeline, of the filler seal flushing pipeline is provided with a first spacer fluid outlet pipe. Water at the flushing outlet of the double-end-face mechanical seal is led to the labyrinth seal to be used for flushing the labyrinth seal, so that sealing water of the double-end-face mechanical seal does not need to be treated, only water is fed, water return and water cooling circulation facilities do not need to be arranged, and the operation difficulty is greatly simplified.

The invention relates to the technical field of valve assembly assembling equipment, in particular to a valve seat assembling system and a working method. The valve seat assembling system comprises a valve seat feeding device, a transfer sliding table, an O-shaped ring feeding and assembling device, a reversing ejector rod assembling device, a grease injection device and a ceramic ball feeding and assembling device. The valve seat on-line automatic assembling machine sequentially completes valve seat feeding, valve seat transferring, O-shaped ring feeding and assembling, reversing ejector rod assembling, lubricating grease injecting and ceramic ball feeding and assembling, can completely replace the manual valve seat assembling process in the prior art, does not need manual intervention, and has the advantages of reducing labor intensity, reducing labor cost and improving assembling efficiency. The mechanization level and the automation level of valve seat assembly are improved, the working efficiency of valve seat assembly is improved, and large-scale production and application of valve seat assembly can be achieved; various assembling modes can be achieved, and mixed assembling production of three process routes including valve seat full-process automatic online assembling, valve seat semi-finished product online assembling and valve seat spare part assembling can be achieved.

The utility model relates to the technical field of pipe joints, and discloses a high-pressure heavy ferrule type pipe joint, which is characterized in that connecting shafts on two sides are connected to two sides of the outer wall of an inner pipe, a pipe joint is connected to the outer walls of the connecting shafts on two sides, ferrule nuts are screwed at two ends of the pipe joint, pressure grooves are arranged on two sides of the outer wall of the inner pipe, and the pressure grooves are connected with the pipe joint. According to the high-pressure heavy ferrule type pipe joint, when the pipe joint is connected with an external guide pipe, the pipe joints on the two sides are allowed to move within a certain range so as to adapt to the installation requirements of different guide pipes, when the connection position needs to be adjusted, the pipe joint can slide in the axial direction of the connecting shaft, and due to the fact that the connecting shaft is fixed to the inner pipe, the pipe joint is not prone to falling off. And the pipe joint is movably connected outside the connecting shaft in a sleeving manner, so that the position of the pipe joint can be adjusted relative to the inner pipe, and after adjustment is completed, the ferrule nut is screwed to firmly clamp the guide pipe to form sealing, so that the guide pipes at different intervals can be conveniently connected.

The utility model discloses a quick-plug type angle valve, which comprises an angle valve body and a quick-plug connector, the angle valve body is detachably connected with the quick-plug connector, the angle valve body can be provided with a two-way interface and / or a four-way interface, the quick-plug connector comprises a shell, a lining pipe fitting, an inner core, a clamp spring and an O-shaped ring, the O-shaped ring is arranged in the middle of a water pipe connecting part, and the inner core is arranged in the shell. The O-shaped ring is used for sealing after a water pipe is inserted, a fixing assembly is arranged above the O-shaped ring, a clamping spring mounting groove is formed in the fixing assembly, the clamping spring is mounted in the clamping spring mounting groove and used for preventing the quick-plug connector from being pulled out of the water pipe, and an inner core is arranged between the clamping spring and the fixing assembly. The inner diameter of the inner core is larger than the inner diameter of the clamping spring, the inner core is used for opening the clamping spring during disassembly so that the quick-plug connector and the angle valve can be taken down from the water pipe, and the quick-plug connector is quick to install, quite convenient and easy to disassemble and convenient and fast to use.

The utility model provides a glue gun, a glue gun handle and a mute assembly, and relates to the field of gluing tools, the glue gun comprises a gun body, a fixed handle, a movable handle, a brake pad, a push rod and a spring driving assembly; particularly, the glue gun further comprises a mute assembly; the mute assembly comprises a brake clamping sleeve and an O-shaped ring. A first through hole extending in the axial direction is formed in the middle of the brake clamping sleeve, the O-shaped ring is embedded into the first through hole, and a center hole of the O-shaped ring is coaxial with the first through hole. The brake clamping sleeve is further provided with a second through hole intersecting with the first through hole, and the brake pad penetrates through the second through hole. The push rod penetrates through the first through hole of the brake clamping sleeve, the penetrating hole in the brake piece and the center hole of the O-shaped ring. The glue gun handle and the mute assembly are accessories of the glue gun. The glue gun can reduce and even eliminate noise generated by friction between the push rod and the brake pad when the glue gun is used in the prior art, does not need to be debugged repeatedly, and has the functional effects of stable noise reduction and convenience in use.

The utility model provides a kind of test tool for testing sealing ring, including first cover plate, second cover plate and baffle;The first cover plate with the second cover plate is detachably connected, and the first cover plate with the second cover plate is provided with O ring;The first cover plate with the baffle is detachably connected, and the first cover plate with the baffle is provided with limiting pad block;Air inlet is provided on the first cover plate, and gas collecting port is provided on the second cover plate;It can adapt to the test demand of multiple different specifications and types of sealing members, and by replacing limiting pad block of different thickness and selecting appropriate specification bolt, the size and structure of tooling can be flexibly adjusted, and air-tight test of various common sealing members is facilitated.

The utility model relates to a reverse osmosis membrane end cover dismounting tool, and belongs to the technical field of water treatment equipment maintenance tools. According to the technical scheme, a pressure bearing is arranged on a bearing frame, a main connecting lead screw is arranged in the center of the pressure bearing in a matched mode, and the main connecting lead screw penetrates through a force bearing plate; an internal thread drawing device is arranged at the lower end of the main connecting screw rod and is a cylinder body with internal threads, and the internal threads of the internal thread drawing device are matched with external threads of a water production port in the center of the reverse osmosis membrane end cover; the upper end of the main connecting lead screw is connected with the electric wrench in a matched mode. A plurality of nylon cushions are arranged on the edge of the force bearing plate and are matched with the end part of a central pipe of the reverse osmosis membrane end cover. The special tool is used for dismantling the reverse osmosis membrane end cover, operation is easy and convenient, prying is convenient, operation can be convenient and fast in a narrow space, an O-shaped ring on the end cover can be more effectively protected, efficiency is improved, and the problems that the reverse osmosis membrane end cover is difficult to pry when dismantled, professional tools are lacked, and operation time is long are solved.

The utility model provides a safe valve airtight leak detection clamp of high efficiency and reliable relates to airtight detection technical field, including bottom plate, the top of bottom plate and near both ends all are installed wallboard, the top of wallboard is installed with base, the top of base and near the center place is installed with pneumatic cylinder, be equipped with the pressing plate between wallboard, the surface of pressing plate and near both ends all are penetrated and have slidingly connected with guide rod, the top of bottom plate and be all penetrated and fixed with seat bush below guide rod. In the utility model, through being equipped with spring seat bush with spring on the both sides of bottom plate, can make the positioning plate in the initial state under the spring force to be on the water surface of water tank, can be under the force action of pneumatic cylinder simultaneously, through the cooperation of pressing plate and safety valve and O ring in the positioning screw hole on the positioning plate, make safety valve can carry out airtight leak detection test with high efficiency and reliable, has the characteristics such as convenient to assemble and disassemble, reliable sealing, high production efficiency.

The utility model provides a split type volute assembly of a centrifugal air compressor. The split type volute assembly comprises a wheel cover body, a volute body and an O-shaped ring. The volute inlet section is provided with an inner connecting piece, and the wheel cover body is provided with an outer connecting piece. The inner connecting piece is connected with the outer connecting piece, so that the wheel cover main body is detachably connected with the volute main body; the inlet section of the volute is provided with a boss, and the boss is provided with an O-shaped ring groove; a groove is formed in the face, facing the inlet section of the volute, of the wheel cover body. And the O-shaped ring groove is matched with the groove of the wheel cover main body to form a space for accommodating the O-shaped ring, so that the wheel cover main body is hermetically connected with the volute main body. The technical scheme has the characteristics of simple structure, convenience in maintenance and fast optimization iteration design.

The utility model belongs to the technical field of valves, and provides a detachable hard sealing valve which comprises a valve body, a cylindrical valve element, a rotating shaft, stacked rings, O-shaped rings and a bent plate. The valve body comprises a shell and an end cover; shaft stacked rings and hole stacked rings which are arranged in a stacked mode are arranged between the outer walls of the front end and the rear end of the cylindrical valve element and the inner walls of the round holes in the front end and the rear end of the shell; the two end covers are installed at the round holes in the front end and the rear end of the shell respectively, and O-shaped rings are arranged between the outer walls of the end covers and the inner walls of the round holes. The two bent plates are arranged on the two rib plates on the inner wall of the shell respectively, the inner ends of the two bent plates make close contact with the outer wall face of the cylindrical valve element to form a sealing pair, and the bent plates and the rib plates are detachably connected through a plurality of bolts. The elastic structure of the multiple stacked rings has a compensation effect on use abrasion, the long-strip-shaped bolt insertion holes in the bent plates enable the pressing structure to be adjustable, the sealing structure of the valve is easy and convenient to disassemble, a sealing piece is resistant to abrasion, the service life is long, and the sealing effect on powdery substances is good.

The utility model relates to the technical field of tamping machines, in particular to a tamping air cylinder structure for a tamping device, which comprises an air cylinder pipe, a gasket sealing kit, an air cylinder cover and a piston connecting rod, the air cylinder pipe forms a main body supporting structure of the tamping air cylinder, and the air cylinder cover is fixedly connected to one end of the air cylinder pipe. The air cylinder cover and the air cylinder pipe are matched to form a closed air cylinder cavity, the sealing kit is fixedly connected to the connecting portion of the air cylinder cover and the air cylinder pipe and the end of the air cylinder pipe, the sealing kit comprises a guide sleeve, a step seal and a dustproof ring which are coaxially arranged in a sleeved mode, and one end of a piston connecting rod is connected into the air cylinder pipe in a sliding mode. The other end of the gasket extends to the outside of the air cylinder pipe, and the gasket is fixedly connected between the air cylinder cover and the air cylinder pipe. The sealing kit comprising the multiple layers of sealing structures is adopted to replace a traditional single-layer O-shaped ring, the sealing performance of the connecting portion of the air cylinder cover and the air cylinder pipe and the sealing performance of the end of the air cylinder pipe are enhanced, dust and pulverized coal are prevented from invading, and sealing aging is delayed.

The utility model provides a kind of magnetic suspension check valve, belong to valve field.It solves the problem that existing check valve is prone to sealing failure due to spring fatigue, corrosion.The present magnetic suspension check valve, including valve body, bonnet and valve core, valve body and bonnet are connected by internal and external thread cooperation, magnetic suspension check valve further include magnetic force device and sealing assembly, magnetic force device includes magnetic ring and magnetic force column, magnetic suspension check valve further include water pressure plate, its upper end surface is equipped with flow guide protrusion, water pressure plate lower end center portion is equipped with guide column and extends axially downward, the guide hole is opened in valve core, sealing assembly includes valve core cover, O ring and sealing gasket, multiple connecting parts are equipped with axially in valve core outer portion, wherein, limit step is equipped in valve body interior, multiple connecting parts and can abut and install on limit step, and sealing connection is realized by valve core cover, sealing gasket and bonnet cooperation.The utility model has the advantages of long service life.

The utility model relates to the technical field of machine core assembly, in particular to machine core O-ring sleeving equipment which comprises a machine frame, a feeding mechanism is installed on one side of the top end of the machine frame, and the feeding mechanism is used for feeding and feeding of O rings. A rotary table mechanism is mounted on the surface of the rack and located on one side of the feeding mechanism; a discharging mechanism is arranged on one side of the rotary disc mechanism, a carrying mechanism is arranged between the discharging mechanism and the rotary disc mechanism, and the carrying mechanism is used for carrying the machine core and the O ring which are sleeved on the rotary disc mechanism into the discharging mechanism to achieve discharging. According to the machine core O-ring sleeving device, the automation degree of machine core O-ring sleeving is improved, manual auxiliary operation is not needed in the assembling process, the labor intensity is reduced, and the working efficiency is improved; and the whole assembly process is automatically completed by a machine, and manual operation does not exist in the process, so that the phenomenon that the machine core is not sleeved with the O ring is avoided, and the yield is increased.