CN218542792U

CN218542792U - Combined sealing device for hydraulic cylinder piston

Info

Publication number: CN218542792U
Application number: CN202222155029.XU
Authority: CN
Inventors: 刘海武
Original assignee: Foshan Haizhanli Engineering Equipment Co ltd
Current assignee: Foshan Haizhanli Engineering Equipment Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2023-02-28
Anticipated expiration: 2032-08-16

Abstract

The utility model discloses a combined sealing device for hydraulic cylinder piston, including a sealing cylinder, a piston rod and a seal assembly, the piston rod is arranged above the interior of the sealing cylinder, the interior of the sealing cylinder is provided with the seal assembly, the problem that solution is easy to leak is avoided through the seal assembly, the sealing performance of the inner cavity of the cylinder body is improved, the seal assembly comprises a first seal cover, a second seal cover, a hollow seat, a liquid inlet and a liquid outlet, the two sides of the top of the interior of the sealing cylinder are provided with the first seal cover, and the second seal cover is arranged below the first seal cover; the utility model discloses a mutually supporting between first seal cover, second seal cover, hollow seat, inlet, liquid outlet and the piston head uses, carries out dual separation by first seal cover and second seal cover and is convenient for better inside to the cylinder body seals to the problem of leaking has appeared easily to the solution of having solved the cylinder body inside.

Description

Combined sealing device for hydraulic cylinder piston

Technical Field

The utility model relates to a pneumatic cylinder equipment technical field especially relates to a combination sealing device for pneumatic cylinder piston.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and does linear reciprocating motion (or swinging motion), has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, thereby being widely applied to hydraulic systems of various machines, and basically consists of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffer device and an exhaust device, wherein the sealing effect of the hydraulic cylinder is poorer;

on the market, general pneumatic cylinder sealing device leads to inside liquid oil to appear leaking the problem easily to the pneumatic cylinder sealing in-process, and then leads to the unable normal use problem of pneumatic cylinder, and the weeping can make the inside activity unstability of pneumatic cylinder, and then leads to the pneumatic cylinder can't keep a state for a long time, consequently, the utility model provides a problem that a combined sealing device for pneumatic cylinder piston exists in order to solve prior art.

SUMMERY OF THE UTILITY MODEL

To the above problem, an object of the utility model is to provide a combined sealing device for pneumatic cylinder piston, this combined sealing device for pneumatic cylinder piston uses through mutually supporting between first seal cover, second seal cover, hollow seat, inlet, liquid outlet and the piston head, carries out dual separation by first seal cover and second seal cover and is convenient for better inside to the cylinder body seal to the problem of leaking has appeared easily in the solution of having solved the cylinder body inside.

For realizing the purpose of the utility model, the utility model discloses a following technical scheme realizes: the utility model provides a combination sealing device for pneumatic cylinder piston, includes a sealed section of thick bamboo, piston rod and seal assembly, the top of the inside of a sealed section of thick bamboo is provided with the piston rod, the inside of a sealed section of thick bamboo is provided with seal assembly, has avoided the easy problem that leaks to appear of solution through seal assembly, has improved the leakproofness of cylinder body inner chamber, seal assembly includes first seal cover, second seal cover, hollow seat, inlet and liquid outlet, the both sides of the inside top of a sealed section of thick bamboo are provided with first seal cover, the below of first seal cover is provided with the second seal cover, first seal cover and second seal cover set up the both sides at the piston rod, have prevented through the setting of first seal cover and second seal cover that the junction of piston rod and a sealed section of thick bamboo from the circumstances such as oil leak, the bottom of a sealed section of thick bamboo is provided with the hollow seat, the inlet has been seted up to the outside of hollow seat, the hollow seat is fixed in the bottom of a sealed section of thick bamboo and is exposed one side outward, the liquid outlet has been seted up to the inboard of hollow seat, inlet and liquid outlet intercommunication pipe, leads in liquid oil work is accomplished from the liquid outlet through the inlet.

The further improvement is that: the piston rod is provided with the piston head in the bottom, the inside both sides of a sealed cylinder are provided with the spout, the both sides of piston rod are provided with first slider, the both sides of piston head are provided with the second slider, first slider all sets up in the spout with the second slider, and the setting through first slider and second slider makes the piston rod remove more stably when the piston rod removes, great improvement the stability of device.

The further improvement lies in that: the bottom of the sealing cylinder is provided with a sealing cover plate, the sealing cover plate is arranged on the outer side of the hollow seat, the sealing cover plate is arranged on the outer side of the liquid inlet, and the liquid inlet is sealed through the sealing cover plate when the sealing cover plate is not used.

The further improvement is that: the bottom of the piston rod is provided with a return spring, the bottom of the return spring is connected with the top of the hollow seat, and the return spring is arranged to perform return movement when the piston rod moves.

The further improvement lies in that: the inside of a sealed section of thick bamboo is provided with the circular sealed pad of multiunit, the surface of piston rod is provided with the protection pad, and the hydraulic oil that gets into in the sealed section of thick bamboo through the setting up of circular sealed pad gets into the spout, and the work motion of the piston rod of being convenient for is used, protects work through the protection pad to the surface of piston rod.

The utility model has the advantages that: the utility model discloses a first seal cover, the second seal cover, the hollow seat, the inlet, mutually support between liquid outlet and the piston head uses, carry out dual separation by first seal cover and second seal cover and be convenient for better inside to the cylinder body seals, thereby the inside solution of cylinder body problem of leaking appears easily has been solved, the leakproofness of cylinder body inner chamber has been improved, carry out sealed processing to the inlet through sealed apron, thereby the problem that the liquid oil spills through the inlet after the pneumatic cylinder operation has been solved, the leakproofness to the inlet has been improved, through the setting of circular sealing pad and protection pad, be convenient for in the leading-in spout of liquid oil, the piston rod of being convenient for uses in the inside flexibility of device, great improvement the flexibility of device.

Drawings

Fig. 1 is a front sectional view of the present invention;

fig. 2 is a schematic view of the sealing cylinder of the present invention.

Wherein: 1. a sealing cylinder; 2. a piston rod; 3. a first seal cartridge; 4. a second seal cartridge; 5. A hollow seat; 6. a liquid inlet; 7. a liquid outlet; 8. a piston head; 9. a chute; 10. a first slider; 11. a second slider; 12. sealing the cover plate; 13. a return spring; 14. a circular gasket; 15. and (6) a protective pad.

Detailed Description

In order to deepen the understanding of the present invention, the following embodiments are combined to further detail the present invention, and the present embodiment is only used to explain the present invention, and does not constitute the limitation of the protection scope of the present invention.

According to fig. 1 and fig. 2, this embodiment provides a combined sealing device for a hydraulic cylinder piston, including a sealing cylinder 1, a piston rod 2 and a sealing assembly, the piston rod 2 is arranged above the inside of the sealing cylinder 1, the sealing assembly is arranged inside the sealing cylinder 1, the problem that a solution is easy to leak is avoided through the sealing assembly, the sealing performance of a cylinder inner cavity is improved, the sealing assembly includes a first sealing sleeve 3, a second sealing sleeve 4, a hollow seat 5, a liquid inlet 6 and a liquid outlet 7, the first sealing sleeve 3 is arranged on two sides of the top inside the sealing cylinder 1, the second sealing sleeve 4 is arranged below the first sealing sleeve 3, the first sealing sleeve 3 and the second sealing sleeve 4 are arranged on two sides of the piston rod 2, the situation of oil leakage at the joint of the piston rod 2 and the sealing cylinder 1 is prevented through the arrangement of the first sealing sleeve 3 and the second sealing sleeve 4, the hollow seat 5 is arranged at the bottom of the sealing cylinder 1, the liquid inlet 6 is arranged on the outside of the hollow seat 5, the hollow seat 5 is fixed at the bottom of the sealing cylinder 1 and exposed out of one side, the liquid outlet 7 is arranged on the inner side of the hollow seat 5, the hollow seat 6 and the liquid inlet is communicated with the liquid outlet 7, and the working oil inlet of the working cylinder 1, and the working oil is communicated with the working oil inlet 7.

The piston rod 2 is provided with the piston head 8 in the bottom, and the inside both sides of sealing cylinder 1 are provided with spout 9, and the both sides of piston rod 2 are provided with first slider 10, and the both sides of piston head 8 are provided with second slider 11, and first slider 10 all sets up in spout 9 with second slider 11, and the setting through first slider 10 and second slider 11 makes the piston rod 2 remove more stably when the piston rod 2 removes, great improvement the stability of device.

The bottom of the sealing cylinder 1 is provided with a sealing cover plate 12, the sealing cover plate 12 is arranged on the outer side of the hollow seat 5, the sealing cover plate 12 is arranged on the outer side of the liquid inlet 6, and the liquid inlet 6 is sealed through the sealing cover plate 12 when the sealing cylinder is not used.

The bottom of the piston rod 2 is provided with a return spring 13, the bottom of the return spring 13 is connected with the top of the hollow seat 5, and the return spring 13 is arranged to perform return movement when the piston rod 2 moves.

The inside of a sealed section of thick bamboo 1 is provided with the circular sealed pad 14 of multiunit, and the surface of piston rod 2 is provided with protection pad 15, and the hydraulic oil that gets into in the sealed section of thick bamboo 1 through the setting up of circular sealed pad 14 help gets into spout 9, and the working movement of the piston rod 2 of being convenient for uses, protects work through protection pad 15 to the surface of piston rod 2.

When this a combination sealing device for pneumatic cylinder piston uses, avoided the easy problem that appears leaking of solution through seal assembly, the leakproofness of cylinder body inner chamber has been improved, the circumstances such as oil leak appear in the junction of piston rod 2 and sealing barrel 1 has been prevented through setting up of first seal cover 3 and second seal cover 4, the leading-in liquid oil of inlet 6, lead into to the work of oiling to the inside completion of sealing barrel 1 from liquid outlet 7, make piston rod 2 remove more stably when piston rod 2 removes through the setting of first slider 10 and second slider 11, great improvement the stability of device, seal work to inlet 6 when not using through sealed apron 12, reset motion is carried out when piston rod 2 removes through the setting of reset spring 13, liquid oil that gets into in the sealing barrel 1 through the setting help of circular sealed pad 14 gets into in the spout 9, the working movement of piston rod 2 of being convenient for uses, protect work through protection pad 15 to the surface of piston rod 2.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A combination sealing device for hydraulic cylinder piston, includes sealed section of thick bamboo (1), piston rod (2) and seal assembly, its characterized in that: the oil-filled oil pump is characterized in that a piston rod (2) is arranged above the inside of the sealing barrel (1), a sealing assembly is arranged inside the sealing barrel (1), the sealing assembly comprises a first sealing sleeve (3), a second sealing sleeve (4), a hollow seat (5), a liquid inlet (6) and a liquid outlet (7), the first sealing sleeve (3) is arranged on two sides of the top of the inside of the sealing barrel (1), the second sealing sleeve (4) is arranged below the first sealing sleeve (3), the first sealing sleeve (3) and the second sealing sleeve (4) are arranged on two sides of the piston rod (2), the hollow seat (5) is arranged at the bottom of the sealing barrel (1), the liquid inlet (6) is arranged on the outer side of the hollow seat (5), the liquid outlet (7) is arranged on the inner side of the hollow seat (5), the liquid inlet (6) and the liquid outlet (7) are communicated with each other, and liquid oil is introduced into the communicating pipe through the liquid inlet (6).

2. A composite seal arrangement for a piston of a hydraulic cylinder according to claim 1, wherein: the piston is characterized in that a piston head (8) is arranged at the bottom of the piston rod (2), sliding grooves (9) are formed in two sides of the interior of the sealing cylinder (1), first sliding blocks (10) are arranged on two sides of the piston rod (2), second sliding blocks (11) are arranged on two sides of the piston head (8), and the first sliding blocks (10) and the second sliding blocks (11) are both arranged in the sliding grooves (9).

3. A combined sealing device for a piston of a hydraulic cylinder according to claim 1, characterized in that: the bottom of the sealing barrel (1) is provided with a sealing cover plate (12), the sealing cover plate (12) is arranged on the outer side of the hollow seat (5), and the sealing cover plate (12) is arranged on the outer side of the liquid inlet (6).

4. A combined sealing device for a piston of a hydraulic cylinder according to claim 1, characterized in that: the bottom of the piston rod (2) is provided with a return spring (13), the bottom of the return spring (13) is connected with the top of the hollow seat (5), the return spring (13) is provided with a plurality of groups and is not redundant in two groups, and the return spring (13) of each group is identical in size and specification.

5. A combined sealing device for a piston of a hydraulic cylinder according to claim 2, characterized in that: the sealing device is characterized in that a plurality of groups of circular sealing gaskets (14) are arranged in the sealing cylinder (1), and a protection gasket (15) is arranged on the surface of the piston rod (2).