CN213982147U

CN213982147U - Sealing structure of check valve

Info

Publication number: CN213982147U
Application number: CN202022921096.9U
Authority: CN
Inventors: 钟平; 郭峰; 蒿志强; 冯金娇; 周帅龙
Original assignee: Dianduo Electromechanical Engineering Jiangsu Co ltd
Current assignee: Dianduo Electromechanical Engineering Jiangsu Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-17
Anticipated expiration: 2030-12-08

Abstract

The utility model relates to a sealing structure of a check valve, which comprises a shell sleeve which is a through structure, and an inner cavity is divided into an upper cavity and a lower cavity by an annular lug inside the shell sleeve; the stator sleeve is arranged in the lower cavity, and a sealing element is arranged between the outer side wall of the stator sleeve and the inner wall of the lower cavity; the rotor sleeve is arranged in the stator sleeve and can rotate relatively; and the rotating shaft penetrates through the middle parts of the rotor sleeve and the shell sleeve. The beneficial effects are that: the sealing device has better sealing performance and can better protect the inside of the rotating mechanism; while the mechanism is still easy to disassemble.

Description

Sealing structure of check valve

Technical Field

The utility model belongs to the technical field of seal structure, especially, relate to blade sealing mechanism of many pages of valve bodies.

Background

Although a sealing element is additionally arranged on a frame of the existing low-leakage air volume regulating valve, the leakage between a bearing and a blade is serious; in some use environments involving chemical agents, corrosive agents are likely to enter the interior of the rotating mechanism, causing corrosion to the interior.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model adopts the following technical scheme:

a check valve sealing structure comprising

The shell is of a through structure, and an inner cavity is divided into an upper cavity and a lower cavity by an annular convex block inside the shell;

the stator sleeve is arranged in the lower cavity, and a sealing element is arranged between the outer side wall of the stator sleeve and the inner wall of the lower cavity;

the rotor sleeve is arranged in the stator sleeve and can rotate relatively;

and the rotating shaft penetrates through the middle parts of the rotor sleeve and the shell sleeve.

In one mode, the rotor sleeve is arranged on the rotating shaft, and a sealing element is arranged at the connecting part of the rotor sleeve and the rotating shaft.

In one mode, the shell is arranged on the valve body bracket; the lower part of the rotating shaft and/or the rotor sleeve are/is connected with the rotating page.

In one mode, a sealing ring is arranged in the upper cavity and sleeved outside the rotating shaft.

In one form, the seal ring is pi-shaped in cross-section.

In one mode, the shell sleeve comprises a detachable upper cover, a through hole is formed in the middle of the upper cover, and the rotating shaft can penetrate through the through hole;

an upper cavity is arranged between the upper cover and the annular convex block.

In one mode, an annular baffle is arranged at the bottom of the rotor sleeve, and the upper side of the annular baffle is abutted to the lower end of the stator sleeve.

In one mode, an annular groove is formed in the rotating shaft on the inner side of the rotor sleeve and used for arranging an annular sealing element; and an annular groove body is also formed in the outer side of the stator sleeve and used for arranging an annular sealing element.

The utility model has the advantages that:

the sealing device has better sealing performance and can better protect the inside of the rotating mechanism; while the mechanism is still easy to disassemble.

Drawings

FIG. 1 is a sectional view of the present invention in an assembled state;

fig. 2 is a schematic diagram of an explosive structure of the present invention;

fig. 3 is a reference diagram of a usage status of the present invention.

In the figure:

the rotor comprises a rotating shaft 10, a rotor sleeve 20, a stator sleeve 30, a shell sleeve 40, an upper cover 41, an annular bump 42, a sealing ring 50 and a sealing element 60.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

the check valve sealing structure as shown in FIG. 1 comprises

The shell 40 is of a through structure, and an inner cavity is divided into an upper cavity and a lower cavity by an annular bump 42 in the shell;

the stator sleeve 30 is arranged in the lower cavity, and a sealing element 60 is arranged between the outer side wall of the stator sleeve 30 and the inner wall of the lower cavity;

a rotor housing 20 disposed in the stator housing 30 and capable of rotating relative to each other; the rotor housing 20 is added so that both sides thereof can be provided with seals.

The rotating shaft 10 passes through the through parts of the rotor sleeve 20 and the shell sleeve 40.

The rotor sleeve 20 is sleeved on the rotating shaft 10, and a sealing element 60 is arranged at the connection part of the rotor sleeve and the rotating shaft.

The shell 40 is arranged on the valve body bracket; the lower portion of the rotary shaft 10 and/or the rotor housing 20 is connected to the rotary page.

And a sealing ring 50 is arranged in the upper cavity, and the sealing ring 50 is sleeved outside the rotating shaft 10.

The section of the sealing ring 50 is pi-shaped; the inner side of the sealing ring 50 is abutted against the outer wall of the rotating shaft 10, and meanwhile, the inner layer and the outer layer of sealing wings of the sealing ring 50 enable the elasticity of the sealing ring 50 to be larger, so that the rotating influence of the rotating shaft 10 is minimized.

The shell sleeve 40 comprises a detachable upper cover, a through hole is formed in the middle of the upper cover, and the rotating shaft 10 can penetrate through the through hole; the upper cover is arranged on the shell 40 body through a fixing screw.

An upper cavity is formed between the upper cover 41 and the annular protrusion 42, so that the sealing ring 50 has an independent cavity, and mutual influence is reduced.

The bottom of the rotor sleeve 20 is provided with an annular baffle 21, and the upper side of the annular baffle 21 is abutted with the lower end of the stator sleeve 30.

The rotating shaft 10 at the inner side of the rotor sleeve 20 is provided with an annular groove body for arranging an annular sealing element 60; an annular groove body is also formed in the outer side of the stator sleeve 30 and used for arranging an annular sealing element 60;

the inner cavity of the rotating mechanism is isolated from the outside by arranging a plurality of sealing elements 60, so that the smoke is prevented from entering.

Referring to fig. 3, in the use process, the driver is connected to the upper end of the rotating shaft 10 and drives the rotating shaft 10 to rotate integrally, so as to further drive the sealing blade to rotate relative to the bracket, thereby realizing the adjustment of the blade inclination angle and realizing the opening and closing.

It will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. Which all fall within the protection scope of the utility model. The protection scheme of the utility model is based on the appended claims.

Claims

1. Check valve seal structure, its characterized in that: comprises that

The shell (40) is of a through structure, and an inner cavity is divided into an upper cavity and a lower cavity by an annular convex block (42) in the shell;

the stator sleeve (30) is arranged in the lower cavity, and a sealing element (60) is arranged between the outer side wall of the stator sleeve (30) and the inner wall of the lower cavity;

the rotor sleeve (20) is arranged in the stator sleeve (30) and can rotate relatively;

and the rotating shaft (10) penetrates through the middle parts of the rotor sleeve (20) and the shell sleeve (40).

2. The check valve sealing structure according to claim 1, wherein: the rotor sleeve (20) is sleeved on the rotating shaft (10), and a sealing element (60) is arranged at the connection part of the rotor sleeve and the rotating shaft.

3. The check valve sealing structure according to claim 1, wherein: the shell sleeve (40) is arranged on the valve body bracket; the lower part of the rotating shaft (10) and/or the rotor sleeve (20) are connected with the rotating page.

4. The check valve sealing structure according to claim 1, wherein: a sealing ring (50) is arranged in the upper cavity, and the sealing ring (50) is sleeved outside the rotating shaft (10).

5. The check valve sealing structure according to claim 4, wherein: the section of the sealing ring (50) is pi-shaped.

6. The check valve sealing structure according to claim 4, wherein: the shell sleeve (40) comprises a detachable upper cover (41), a through hole is formed in the middle of the upper cover (41), and the rotating shaft (10) can penetrate through the through hole;

an upper cavity is arranged between the upper cover and the annular convex block (42).

7. The check valve sealing structure according to claim 1, wherein: and an annular baffle plate (21) is arranged at the bottom of the rotor sleeve (20), and the upper side of the annular baffle plate (21) is abutted against the lower end of the stator sleeve (30).

8. The check valve sealing structure according to claim 2, wherein: the rotating shaft (10) on the inner side of the rotor sleeve (20) is provided with an annular groove body for arranging an annular sealing element (60); an annular groove body is also formed in the outer side of the stator sleeve (30) and used for arranging an annular sealing piece (60).