CN219510152U

CN219510152U - Butterfly valve

Info

Publication number: CN219510152U
Application number: CN202320772338.3U
Authority: CN
Inventors: 李瑞江
Original assignee: Beijing High & Medium Pressure Valves Co ltd
Current assignee: Beijing High & Medium Pressure Valves Co ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-08-11
Anticipated expiration: 2033-04-10

Abstract

The utility model discloses a butterfly valve, which comprises a valve body, wherein a valve clack is arranged in the valve body, and a valve seat is also arranged in the valve body; an air inlet hole is further formed in the valve body, and an annular groove communicated with the air inlet hole is formed in the valve seat; and an air outlet hole is arranged in the annular groove, and steam is blown to the valve clack through the air outlet hole. When the device is stopped and the sealing surface needs to be cleaned, high-temperature steam enters the annular groove of the valve seat along the air inlet, and the sealing surface is flushed through the air outlet hole on the annular groove; based on the method, the time for cleaning the sealing surface is greatly reduced, the related cost is also greatly reduced, and the problem of field use is practically solved.

Description

Butterfly valve

Technical Field

The utility model relates to the technical field of valves, in particular to a butterfly valve.

Background

The butterfly valve is also called as flap valve, and is a simple structure butterfly valve, and can be used for the on-off control of low-pressure pipeline medium. When the butterfly valve is used for viscous medium or medium easy to coke, the device is stopped, so that the viscous medium or the medium easy to coke is easy to cause on-line cleaning of the sealing surface of the valve, the sealing surface can not be cleaned on line only by disassembling the valve, then the valve is tested, and the valve is mounted on the pipeline after being qualified, and meanwhile, the pipeline also has to be subjected to pressure test of the whole pipeline again because the valve is mounted again, thus not only greatly occupying the production time, but also having high related cost.

Disclosure of Invention

The present utility model is directed to a butterfly valve, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the butterfly valve comprises a valve body, wherein a valve clack is arranged in the valve body, and a valve seat is also arranged in the valve body; an air inlet hole is further formed in the valve body, and an annular groove communicated with the air inlet hole is formed in the valve seat; and an air outlet hole is arranged in the annular groove, and steam is blown to the valve clack through the air outlet hole.

As a preferable technical scheme of the utility model: the air inlet hole passes through the sealing gasket and then flows into the annular groove along the air passage.

As a preferable technical scheme of the utility model: the upper end of the sealing gasket is also provided with a sealing block, and the sealing block is inserted into the air passage to block the air source from flowing to one end surface far away from the valve seat.

As a preferable technical scheme of the utility model: the number of the air outlet holes is multiple, and the air outlet holes are circumferentially arrayed on the valve seat.

As a preferable technical scheme of the utility model: the gap between any two adjacent air outlet holes is 5 mm.

As a preferable technical scheme of the utility model: the included angle between the air outlet hole and the horizontal plane of the valve seat is 45 degrees.

By adopting the technical scheme, the utility model has the beneficial effects that: when the device is stopped and the sealing surface needs to be cleaned, high-temperature steam enters the annular groove of the valve seat along the air inlet, and the sealing surface is flushed through the air outlet hole on the annular groove; based on the method, the time for cleaning the sealing surface is greatly reduced, the related cost is also greatly reduced, and the problem of field use is practically solved.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present utility model;

FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;

FIG. 3 is a schematic diagram of the front structure of a valve seat according to the present utility model;

fig. 4 is a partially enlarged schematic view at B in fig. 3.

In the figure: 1. a valve body; 2. a valve seat; 3. a sealing block; 4. a sealing gasket; 5. a sealing block; 6. an airway; 7. an air inlet hole; 8. an annular groove; 9. and an air outlet hole.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "upper surface", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-4, an embodiment of the present utility model is provided: the butterfly valve comprises a valve body 1, wherein a valve clack 3 is arranged in the valve body 1, and a valve seat 2 is also arranged in the valve body 1; an air inlet 7 is also arranged on the valve body 1, and an annular groove 8 communicated with the air inlet 7 is arranged on the valve seat 2; an air outlet hole 9 is arranged in the annular groove 8, and steam is blown to the valve clack 3 through the air outlet hole 9.

In summary, when the device is stopped and the sealing surface needs to be cleaned, high-temperature steam enters the annular groove 8 of the valve seat 2 along the air inlet 7, and washes the sealing surface through the air outlet hole 9 on the annular groove 8; based on the method, the time for cleaning the sealing surface is greatly reduced, the related cost is also greatly reduced, and the problem of field use is practically solved. When the valve is specifically used, the valve is divided into three stages, namely when the valve clack 3 is closed, the valve is cleaned for 5 minutes; then the valve clack 2 is opened, wherein the rotation angle of the valve clack 2 is about 5 degrees, and flushing is continued; after 5 minutes again, the valve clack 2 is completely opened and cleaned for a while, about 5 minutes; at this time, the sealing surface is cleaned by high-temperature steam, and residual substances in the pipeline are discharged through a drain outlet discharge device of the pipeline system.

Since the air inlet 7 passes through the sealing gasket 4 and flows into the annular groove 8 along the air passage 6, the leakage of air source can be avoided.

Further, a sealing block 5 is further provided at the upper end of the sealing pad 4, and the sealing block 5 is inserted into the air passage 6 to block the air source from flowing to an end surface far from the valve seat 2.

In summary, the sealing gasket 4 and the sealing block 5 are utilized to guide the air flow to the designated position, so that the leakage of the air source is reduced; and secondly, the pressure of the air source is increased, and the flushing effect is enhanced.

On the basis of the scheme, the number of the air outlet holes 9 is multiple, and the plurality of the air outlet holes 9 are circumferentially arrayed on the valve seat 2; further, the gap between any two adjacent air outlet holes 9 is 5 mm; further, the included angle between the air outlet hole 9 and the horizontal plane of the valve seat 2 is 45 °.

In summary, the plurality of air outlet holes 9 can completely cover the whole sealing surface to guarantee that steam can completely cover the sealing surface, the contained angle between air outlet holes 9 and valve seat 2 is 45 degrees simultaneously, and impurity on the sealing surface can be better rinsed clean when also being convenient for the air current impact when sealing surface when being convenient for valve seat 2 installation.

Based on the method, the time for cleaning the sealing surface is further reduced, the related cost is also greatly reduced, and the problem of field use is practically solved.

The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.

Claims

1. A butterfly valve, characterized in that: the valve comprises a valve body (1), wherein a valve clack (3) is arranged in the valve body (1), and a valve seat (2) is also arranged in the valve body (1);

an air inlet hole (7) is further formed in the valve body (1), and an annular groove (8) communicated with the air inlet hole (7) is formed in the valve seat (2);

an air outlet hole (9) is arranged in the annular groove (8), and steam is blown to the valve clack (3) through the air outlet hole (9).

2. A butterfly valve according to claim 1, wherein: the air inlet holes (7) penetrate through the sealing gasket (4) and flow into the annular groove (8) along the air passage (6).

3. A butterfly valve according to claim 2, wherein: the upper end of the sealing gasket (4) is also provided with a sealing block (5), and the sealing block (5) is inserted into the air passage (6) to prevent the air source from flowing to an end surface far away from the valve seat (2).

4. A butterfly valve according to claim 1 or 2 or 3, wherein: the number of the air outlet holes (9) is multiple, and the air outlet holes (9) are circumferentially arrayed on the valve seat (2).

5. A butterfly valve according to claim 4, wherein: the gap between any two adjacent air outlet holes (9) is 5 mm.

6. A butterfly valve according to claim 5, wherein: the included angle between the air outlet hole (9) and the horizontal plane of the valve seat (2) is 45 degrees.