CN212803826U

CN212803826U - Cylinder end cover sealing structure

Info

Publication number: CN212803826U
Application number: CN202021577548.XU
Authority: CN
Inventors: 黄延征
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-03-26
Anticipated expiration: 2030-08-03

Abstract

The utility model discloses a cylinder end cover seal structure, include: end lid, piston rod, uide bushing, UN sealing washer and O type sealing washer. The piston rod is arranged in the end cover body. The guide sleeve is arranged in the end cover body, and the guide sleeve is sleeved on the piston rod. The UN sealing ring is sleeved on the guide sleeve and used for preventing compressed air from leaking outwards. The O-shaped sealing ring is sleeved on the end cover body. Therefore, the utility model discloses a cylinder end cover seal structure has ensured the leakproofness of cylinder, and has ensured that cylinder piston carries out effectual work.

Description

Cylinder end cover sealing structure

Technical Field

The utility model relates to a cylinder seal technical field especially relates to a cylinder end cover seal structure.

Background

And a sealing element is required to be arranged in the end cover of the cylinder, so that the compressed air of the cylinder barrel is not leaked in the working process of the cylinder, and the back-and-forth movement of the piston rod is guaranteed. The existing cylinder end cover is only provided with one sealing ring, the sealing ring is corroded and aged under the working condition of high temperature and high humidity, deformation leakage is caused, compressed air is leaked, and pressure is insufficient to push a piston to work.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cylinder end cover seal structure, its leakproofness that can ensure the cylinder, and can also ensure that the cylinder piston carries out effectual work.

In order to achieve the above object, the utility model provides a cylinder end cover seal structure, include: end lid, piston rod, uide bushing, UN sealing washer and O type sealing washer. The piston rod is arranged in the end cover body. The guide sleeve is arranged in the end cover body, and the guide sleeve is sleeved on the piston rod. The UN sealing ring is sleeved on the guide sleeve and used for preventing compressed air from leaking outwards. The O-shaped sealing ring is sleeved on the end cover body.

In one or more embodiments, the cylinder end cover sealing structure further includes a wear-resistant sealing ring, which is sleeved on the piston rod, and the wear-resistant sealing ring is located in the end cover body.

In one or more embodiments, the wear seal expands when heated and wetted, thereby filling the gap formed by the piston rod and the end cap.

Compared with the prior art, according to the utility model discloses a cylinder end cover seal structure through adopting the two effect sealing washers, has ensured the leakproofness of cylinder, and has ensured that cylinder piston carries out effectual work.

Drawings

Fig. 1 is a schematic structural view of a cylinder head cover sealing structure according to an embodiment of the present invention.

Description of the main reference numerals:

1-end cover body, 2-piston rod, 3-guide sleeve, 4-UN sealing ring, 5-O type sealing ring and 6-wear-resistant sealing ring.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Fig. 1 is a schematic structural view of a cylinder head cover sealing structure according to an embodiment of the present invention. As shown in fig. 1, according to the utility model discloses a cylinder end cover seal structure of embodiment includes: end cover body 1, piston rod 2, uide bushing 3, UN sealing washer 4 and O type sealing washer 5. The piston rod 2 is disposed in the end cap body 1. The guide sleeve 3 is arranged in the end cover body 1, and the piston rod 2 is sleeved with the guide sleeve 3. The UN sealing ring 4 is sleeved on the guide sleeve 3, and the UN sealing ring 4 is used for preventing compressed air from leaking outwards. The O-shaped sealing ring 5 is sleeved on the end cover body 1.

In one or more embodiments, the cylinder end cover sealing structure further includes a wear-resistant sealing ring 6, which is sleeved on the piston rod 2, and the wear-resistant sealing ring 6 is located in the end cover body 1. The wear-resistant sealing ring 6 is heated and expands under damp, so that a gap formed between the piston rod 2 and the end cover body 1 is filled.

In practical application, the utility model discloses a cylinder end cover seal structure, cylinder during operation, the inward movement of piston rod 2, the 4 lip lamellas of UN sealing washer expand under gaseous pressure, prevent compressed air outwards to reveal, ensure the normal motion of piston. Under the high temperature and high humidity working condition, the wear-resistant sealing ring 6 is heated and expands due to humidity, and fills the gap formed by the piston rod 2 and the cylinder end cover, so that the sealing effect is achieved even if the UN sealing ring 4 is damaged, and the normal motion of the piston is guaranteed.

In a word, the utility model discloses a cylinder end cover seal structure through adopting the sealing washer of two effects, has ensured the leakproofness of cylinder, and has ensured that the cylinder piston carries out effectual work.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A cylinder head cover seal structure, comprising:

an end cap body;

the piston rod is arranged in the end cover body;

the guide sleeve is arranged in the end cover body and sleeved on the piston rod;

the UN sealing ring is sleeved on the guide sleeve and used for preventing compressed air from leaking outwards; and

and the O-shaped sealing ring is sleeved on the end cover body.

2. The cylinder end cover sealing structure according to claim 1, further comprising a wear-resistant sealing ring sleeved on the piston rod, wherein the wear-resistant sealing ring is located in the end cover body.

3. The cylinder head cover sealing structure according to claim 2, wherein said wear-resistant seal ring is heated and expanded by moisture, thereby filling a gap formed between said piston rod and said head cover.