CN218094180U

CN218094180U - Piston structure convenient to dismantle sealing washer

Info

Publication number: CN218094180U
Application number: CN202222550737.3U
Authority: CN
Inventors: 林武; 杨俊虎; 张磊; 谢江; 谢飞
Original assignee: Zenith Steel Group Nantong Co Ltd
Current assignee: Zenith Steel Group Nantong Co Ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2022-12-20
Anticipated expiration: 2032-09-27

Abstract

The utility model relates to a piston structure convenient to dismantle sealing washer relates to sealing washer technical field, dismantles the problem that the degree of difficulty is big in order to solve seal ring, and it includes piston body and piston rod, the one end of piston body links to each other with the piston rod, the piston rod is kept away from the one end of piston body and has been seted up the passageway of ventilating, the passageway of ventilating is seted up along piston rod length direction, air outlet channel has been seted up in the piston body, air outlet channel's inner wall and air outlet channel's inner wall are linked together, a plurality of seal grooves have been seted up on the outer fringe lateral wall of piston body, and are a plurality of the inner wall of seal groove all is linked together with air outlet channel's inner wall, each all be provided with the filling block in the seal groove, the cover is equipped with seal ring on the outer wall of piston body, seal ring's inner wall is laminated with the end wall of filling block mutually. This application has the effect of seal ring dismantlement of being convenient for.

Description

Piston structure convenient to dismantle sealing washer

Technical Field

The application relates to the technical field of sealing rings, in particular to a piston structure convenient to disassemble a sealing ring.

Background

The piston rod is a connecting component for supporting the piston to do work, is widely applied to an oil cylinder and an air cylinder movement executing component, is a moving component with frequent movement and high technical requirements, and is a very common transmission connecting component.

The piston rod moves frequently, the sealing washer on the piston is easy to wear, the hydraulic cylinder is easy to leak after the sealing washer is worn and loses efficacy, and the hydraulic cylinder cannot be normally used due to the internal leakage, so that the sealing washer on the piston rod needs to be replaced.

In the related art, because the sealing washer is installed on the piston, the installation is tighter, the disassembly is difficult when the sealing washer needs to be replaced, especially for some large-sized piston structures, the disassembly difficulty is higher, and meanwhile, in the disassembly process, the piston rod may be damaged by the mistake of workers, the subsequent use of the piston rod is influenced, and the greater economic loss is caused, so that the improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the degree of difficulty is big is dismantled to seal ring, this application provides a piston structure convenient to dismantle sealing washer.

The application provides a pair of piston structure convenient to dismantle sealing washer adopts following technical scheme:

the utility model provides a piston structure convenient to dismantle sealing washer, includes piston body and piston rod, the one end of piston body links to each other with the piston rod, the piston rod is kept away from the one end of piston body and is seted up the passageway of ventilating, the passageway of ventilating is seted up along piston rod length direction, the passageway of giving vent to anger has been seted up in the piston body, the inner wall of the passageway of giving vent to anger is linked together with the inner wall of the passageway of ventilating, a plurality of seal grooves have been seted up on the outer fringe lateral wall of piston body, and is a plurality of the inner wall of seal groove all is linked together with the inner wall of the passageway of giving vent to anger, each all be provided with the stuff block in the seal groove, the cover is equipped with seal ring on the outer wall of piston body, seal ring's inner wall is laminated with the end wall of stuff block mutually.

Because the sealing washer is arranged on the piston, the sealing washer is arranged tightly, the sealing washer is difficult to disassemble when needing to be replaced, particularly for large-scale piston structures, the disassembling difficulty is higher, and meanwhile, the piston rod can be damaged due to the error of workers in the disassembling process, the subsequent use of the piston rod is influenced, and larger economic loss is caused; by adopting the technical scheme, when the sealing washer outside the piston is seriously worn, the air channel is communicated with the air outlet channel, the air pipe of compressed air is introduced into the air channel, the compressed air enters the air outlet channel, the filling block moves towards the opening of the sealing groove under the action of the gas pressure, the filling block jacks up the sealing washer, at the moment, a worker takes down the sealing washer, stops introducing the compressed air, presses the filling block again for resetting, then the worker sleeves a new sealing washer on the piston body, and after the operation is finished, the new sealing washer is installed into the hydraulic cylinder for use; through the arrangement of the ventilation channel, the air outlet channel, the sealing groove and the filling block, the disassembly difficulty of the piston body when the sealing washer is disassembled is reduced, the working efficiency is improved, the disassembly treatment is convenient for workers, and the possibility of damage to the piston body or the piston rod due to contact of the piston body or the piston rod in the disassembly process is reduced.

Optionally, the filling block includes straight portion and grafting portion, grafting portion connects the one end in straight portion, straight portion inserts and establishes in the seal groove, grafting portion inserts and establishes on the inner wall of air outlet channel, seal ring's inner wall and straight portion looks butt.

By adopting the technical scheme, the filling block consists of the straight part and the inserting part, and the straight part and the inserting part are integrally formed; through the arrangement of the straight portion and the inserting portion, the contact area of the filling block during inserting is increased, and the possibility that the filling block is separated from the sealing groove easily is reduced.

Optionally, a return spring is arranged on the bottom wall of the sealing groove, one end of the return spring is connected to the bottom wall of the sealing groove, and the other end of the return spring is connected to the straight portion.

By adopting the technical scheme, the return spring is fixedly glued on the bottom wall of the sealing groove, and one end of the return spring, which is far away from the bottom wall of the sealing groove, is fixedly glued on the straight part; when compressed air is introduced, the filling block gradually escapes from the sealing groove, the return spring is in a stretching state, after a worker dismantles the severely worn sealing washer, the introduction of the compressed air is stopped, the return spring elastically deforms, and the return spring drives the filling block to reset; through the arrangement of the reset spring, a worker does not need to press the filling block for resetting, the operation is convenient and fast, and the working efficiency is improved; meanwhile, the possibility that the filling block is directly separated from the sealing groove when the filling block is under larger gas pressure to cause potential safety hazards is reduced, and the safety of the sealing washer in the process of disassembling is improved.

Optionally, a mounting groove is formed in one end, away from the plugging portion, of the straight portion, and a mounting block matched with the inner wall of the mounting groove is arranged on the sealing gasket.

By adopting the technical scheme, one end of the straight part, which is far away from the inserting part, is provided with the mounting groove, the sealing gasket is integrally provided with the mounting block, and the mounting block is inserted in the mounting groove; through the arrangement of the mounting groove and the mounting block, the position of the sealing washer is fixed, the possibility of movement of the sealing washer is reduced, and the fixing is reliable.

Optionally, a plurality of rubber rings are arranged on the outer wall of the insertion part, the rubber rings are sleeved on the outer wall of the insertion part, and the rubber rings are abutted to the inner wall of the air outlet channel.

By adopting the technical scheme, the outer wall of the insertion part is sleeved with the plurality of rubber rings, and the plurality of rubber rings are abutted against the inner wall of the air outlet channel; through the setting of a plurality of rubber circles, the possibility that compressed air flows out from the clearance of grafting portion and vent channel inner wall when reducing compressed air and letting in has guaranteed thereby that inside gas pressure reduces the possibility that inside gas pressure undersize can't follow seal ring jack-up, has simultaneously and cuts off the effect that hydraulic oil enters into in the gas outlet channel in the hydro-cylinder.

Optionally, a groove for installing the rubber ring is formed in the outer wall of the insertion part.

By adopting the technical scheme, the outer wall of the insertion part is provided with the groove; through the arrangement of the groove, the rubber ring is fixed and reliable, and the possibility of separation of the rubber ring and the insertion part is reduced.

Optionally, a threaded hole is formed at an opening of the ventilation channel, a ventilation joint is arranged in the threaded hole, and the inside of the ventilation joint is communicated with the ventilation channel.

By adopting the technical scheme, the ventilation joint is connected in the threaded hole through threads; when compressed air needs to pass through, the air pipe of the compressed air is connected to the ventilation joint; through the setting of screw hole and joint of ventilating, the possibility that appears leaking gas when reducing compressed air and leading to helps improving the leakproofness when compressed air leads to.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the ventilation channel, the air outlet channel, the sealing groove and the filling block, the disassembly difficulty of the piston body when the sealing washer is disassembled is reduced, the working efficiency is improved, the disassembly treatment is convenient for workers, and the possibility of damage to the piston body or a piston rod due to contact in the disassembly process is reduced;

2. through the arrangement of the reset spring, workers do not need to press the filling block for resetting, the operation is convenient and fast, and the working efficiency is improved; meanwhile, the possibility of potential safety hazards caused by the fact that the filling block is directly separated from the sealing groove when being subjected to larger gas pressure is reduced, and the safety of the sealing washer in dismounting is improved;

3. through the setting of a plurality of rubber circles, the compressed air reduces the compressed air when letting in and flows out from the clearance department of grafting portion and ventilation channel inner wall, thereby has guaranteed that inside gas pressure reduces the possibility that inside gas pressure undersize can't follow seal ring jack-up, has simultaneously to cut off the effect in the interior hydraulic oil of hydro-cylinder enters into the air outlet channel.

Drawings

Fig. 1 is a schematic structural diagram of a piston structure for facilitating removal of a seal ring in an embodiment of the present application.

Fig. 2 is a sectional view of a piston structure for facilitating removal of a seal ring in an embodiment of the present application.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Description of reference numerals: 1. a piston body; 11. an air outlet channel; 2. a piston rod; 21. a vent passage; 22. a threaded hole; 3. a sealing groove; 4. filling blocks; 41. a straight portion; 411. mounting grooves; 42. a plug-in part; 421. a groove; 5. a sealing gasket; 51. mounting blocks; 6. a return spring; 7. a rubber ring; 8. a ventilation joint.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses piston structure convenient to dismantle sealing washer. Referring to fig. 1, the piston structure convenient to dismantle sealing washer includes piston body 1 and piston rod 2, and piston rod 2's one end integrated into one piece is on piston body 1, and piston body 1 adopts the grey cast iron material to make in this embodiment, and the cover is equipped with seal ring 5 on piston body 1's the outer wall, and seal ring 5 makes for the rubber material in this embodiment.

Referring to fig. 1 and 2, a ventilation channel 21 is opened at one end of the piston rod 2 far away from the piston body 1, the ventilation channel 21 is opened along the length direction of the piston rod 2, the ventilation channel 21 penetrates into the piston body 1, a ventilation joint 8 is installed at an opening of the inner wall of the ventilation channel 21, the inside of the ventilation joint 8 is communicated with the inner wall of the ventilation channel 21, a threaded hole 22 is opened at the opening of the ventilation channel 21, the end part of the ventilation joint 8 is in threaded hole 22, so that the possibility of air leakage when compressed air is introduced is reduced, and the improvement of the sealing performance when the compressed air is introduced is facilitated.

Referring to fig. 2 and 3, gas outlet channel 11 is provided in piston body 1, the inner wall of gas outlet channel 11 is communicated with the inner wall of ventilation channel 21, a plurality of seal grooves 3 have been provided on the outer edge side wall of piston body 1, a plurality of seal grooves 3 are set gradually along the circumferential direction of piston body 1, the number of seal grooves 3 can be 4, the inner wall of each seal groove 3 is all communicated with the inner wall of gas outlet channel 11, the diameter of the inner wall of seal groove 3 is greater than the aperture of gas outlet channel 11 in this embodiment, a plurality of filling blocks 4 are further installed on piston body 1, the number of filling blocks 4 is consistent with the number of seal grooves 3, filling blocks 4 are inserted in seal grooves 3 and extend into gas outlet channel 11, the inner wall butt of sealing washer 5 is on filling blocks 4, the material of filling blocks 4 is the same as the material of piston body 1 in this embodiment.

Referring to fig. 3, the filling block 4 includes a straight portion 41 and a plug portion 42, the straight portion 41 is inserted into the sealing groove 3, the plug portion 42 is integrally formed at one end of the straight portion 41, the plug portion 42 penetrates through the inner wall of the sealing groove 3 and is inserted into the air outlet channel 11, a plurality of grooves 421 are formed in the outer wall of the plug portion 42, a rubber ring 7 is embedded in each groove 421, the rubber ring 7 is made of rubber, the rubber ring 7 is sleeved on the plug portion 42, the rubber ring 7 is abutted to the inner wall of the air outlet channel 11, so as to reduce the possibility that compressed air flows out from the gap between the plug portion 42 and the inner wall of the air outlet channel 21 when the compressed air is introduced, thereby ensuring that the internal air pressure is reduced to reduce the possibility that the internal air pressure is too small to jack up from the sealing gasket 5, and meanwhile, the effect of blocking hydraulic oil in the oil cylinder from entering the air outlet channel 11 is achieved.

Referring to fig. 3, the return spring 6 is fixed on the bottom wall of the sealing groove 3 in an adhesive manner, and one end of the return spring 6, which is far away from the bottom wall of the sealing groove 3, is fixed on the flat portion 41 in an adhesive manner, in this embodiment, the number of the return springs 6 can be 2, and a worker does not need to press the filling block 4 for resetting, so that the operation is convenient and fast, and the working efficiency is improved; meanwhile, the possibility of potential safety hazards caused by the fact that the filling block 4 is directly separated from the sealing groove 3 when being under large gas pressure is reduced, and the safety of the sealing washer 5 in the detaching process is improved.

Referring to fig. 3, the end of the straight portion 41 away from the insertion portion 42 abuts against the sealing washer 5, the mounting block 51 is integrally formed on the sealing washer 5, and the mounting groove 411 for inserting the mounting block 51 is formed in the end of the straight portion 41 away from the insertion portion 42, so that the position of the sealing washer 5 is fixed, and the possibility of movement of the sealing washer 5 is reduced.

The implementation principle of the piston structure convenient to dismantle sealing washer of the embodiment of this application is: when a sealing ring outside the piston body 1 is seriously worn, the ventilation joint 8 is taken out, the end part of the ventilation joint 8 is aligned with the threaded hole 22 to be screwed, an air pipe of compressed air is connected to the ventilation joint 8, the compressed air is introduced into the ventilation channel 21, the compressed air flows through the air outlet channel 11, the filling block 4 is subjected to gas pressure generated by the compressed air, the filling block 4 moves towards the opening of the sealing groove 3, the reset spring 6 is stretched, the sealing washer 5 is jacked up by the filling block 4, a worker removes the sealing washer 5, the mounting block 51 of the sealing washer 5 is separated from the mounting groove 411, when the sealing washer 5 is completely removed, the introduction of the compressed air is stopped, the reset spring 6 is elastically deformed to drive the filling block 4 to reset, after the reset, the worker sleeves a new sealing washer 5 on the piston body 1, the mounting block 51 of the sealing washer 5 is inserted into the mounting groove 411, and the ventilation joint 8 is rotated and installed in the hydraulic cylinder for use; through the arrangement of the ventilation channel 21, the air outlet channel 11, the sealing groove 3 and the filling block 4, the disassembly difficulty of the piston body 1 during the disassembly of the sealing washer 5 is reduced, the working efficiency is improved, the disassembly treatment of workers is facilitated, and the possibility of damage to the piston body 1 or the piston rod 2 due to the contact of the piston body and the piston body in the disassembly process is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a piston structure convenient to dismantle sealing washer which characterized in that: including piston body (1) and piston rod (2), the one end of piston body (1) links to each other with piston rod (2), piston rod (2) are kept away from the one end of piston body (1) and are seted up passageway (21) of ventilating, passageway (21) of ventilating is seted up along piston rod (2) length direction, air outlet channel (11) have been seted up in piston body (1), the inner wall of air outlet channel (11) is linked together with the inner wall of passageway (21) of ventilating, a plurality of seal groove (3) have been seted up on the outer fringe lateral wall of piston body (1), and is a plurality of the inner wall of seal groove (3) all is linked together with the inner wall of air outlet channel (11), each all be provided with filling block (4) in seal groove (3), the cover is equipped with seal ring (5) on the outer wall of piston body (1), the inner wall of seal ring (5) is laminated with the end wall of filling block (4).

2. The piston structure for facilitating the removal of a seal ring according to claim 1, wherein: fill piece (4) including straight portion (41) and grafting portion (42), the one end at straight portion (41) is connected in grafting portion (42), straight portion (41) are inserted and are established in seal groove (3), grafting portion (42) are inserted and are established on the inner wall of outlet channel (11), the inner wall and the straight portion (41) looks butt of seal ring (5).

3. The piston structure for facilitating the disassembly of the seal ring according to claim 2, wherein: be provided with reset spring (6) on the diapire of seal groove (3), the one end of reset spring (6) is connected on the diapire of seal groove (3), the other end of reset spring (6) is connected on straight portion (41).

4. The piston structure for facilitating the removal of a seal ring according to claim 2, wherein: the one end that straight portion (41) kept away from grafting portion (42) has seted up mounting groove (411), be provided with on seal ring (5) and be used for installing piece (51) with mounting groove (411) inner wall looks adaptation.

5. The piston structure for facilitating the removal of a seal ring according to claim 2, wherein: the outer wall of the insertion part (42) is provided with a plurality of rubber rings (7), the rubber rings (7) are sleeved on the outer wall of the insertion part (42), and the rubber rings (7) are abutted against the inner wall of the air outlet channel (11).

6. The piston structure for facilitating the removal of a seal ring according to claim 5, wherein: the outer wall of the insertion part (42) is provided with a groove (421) for installing the rubber ring (7).

7. The piston structure for facilitating the removal of a seal ring according to claim 1, wherein: the opening of the ventilation channel (21) is provided with a threaded hole (22), a ventilation joint (8) is arranged in the threaded hole (22), and the inside of the ventilation joint (8) is communicated with the ventilation channel (21).