CN212775813U

CN212775813U - Gate valve with good sealing effect

Info

Publication number: CN212775813U
Application number: CN202021085807.7U
Authority: CN
Inventors: 金崇玉
Original assignee: Yongjia Zhongyi Valve Co ltd
Current assignee: YONGXIU VALVE CO LTD
Priority date: 2020-06-13
Filing date: 2020-06-13
Publication date: 2021-03-23
Anticipated expiration: 2030-06-13

Abstract

The utility model discloses a sealed effectual gate valve, including the gate valve body, the first flange of the equal fixedly connected with in both sides of gate valve body, the both sides of first flange all communicate there is communicating pipe body, communicating pipe body is close to one side fixedly connected with second flange of gate valve body, be provided with seal ring between first flange and the second flange, seal ring's one end is located the inner chamber of communicating pipe body. The utility model discloses a set up first flange, second flange and seal ring, played the sealed effect of gate valve body and the junction of communicating pipe body, wherein butadiene acrylonitrile rubber layer and EP rubbers layer have played the effect of resistant oil, wear-resisting, ageing-resistant and gas tightness strong and the effect of resistance to hot water nature, corrosion resistance, ageing resistance and compliance respectively, the junction of having solved the gate valve is generally sealed through sealed the pad, but the sealed effect of simple use is relatively poor to the problem of leakage risk has been increased.

Description

Gate valve with good sealing effect

Technical Field

The utility model relates to a gate valve technical field specifically is a sealed effectual gate valve.

Background

The gate valve is an opening and closing member gate plate, the motion direction of the gate plate is perpendicular to the fluid direction, the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled, the gate valve is sealed through the contact of a valve seat and the gate plate, usually, a sealing surface can be subjected to surfacing welding of metal materials to increase the wear resistance, such as surfacing welding of 1Cr13, STL6, stainless steel and the like, the gate plate is provided with a rigid gate plate and an elastic gate plate, the gate valve is divided into the rigid gate valve, the elastic gate valve and the like according to the difference of the gate plates, the joint of the gate valve is generally sealed through a sealing gasket, but the sealing effect of the sealing gasket.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealed effectual gate valve possesses sealed advantage, and the junction of having solved the gate valve generally seals through sealed the pad, but the sealed effect of simple use is relatively poor to the problem of leakage risk has been increased.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a sealed effectual gate valve, includes the gate valve body, the equal first flange of fixedly connected with in both sides of gate valve body, the both sides of first flange all communicate and have communicating pipe body, communicating pipe body is close to one side fixedly connected with second flange of gate valve body, be provided with seal ring between first flange and the second flange.

Preferably, one end of the sealing washer is located in the inner cavity of the communicating pipe body, and one end of the gate valve body extends to the inner cavity of the communicating pipe body.

Preferably, the upper ends and the lower ends of the first flange, the second flange and the sealing washer are provided with holes, and the first flange, the second flange and the sealing washer are in threaded connection through bolts.

Preferably, the sealing washer comprises a sealing washer body, a nitrile rubber layer is arranged on the surface of the sealing washer body, and an ethylene propylene rubber layer is arranged on one side, far away from the sealing washer body, of the nitrile rubber layer.

Preferably, the surface of the gate valve body, which is located at one end of the inner cavity of the communicating pipe body, is in contact with the sealing washer and is located in the inner cavity of the sealing washer.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up first flange, second flange and seal ring, played the sealed effect of gate valve body and the junction of communicating pipe body, wherein butadiene acrylonitrile rubber layer and EP rubbers layer have played the effect of resistant oil, wear-resisting, ageing-resistant and gas tightness strong and the effect of resistance to hot water nature, corrosion resistance, ageing resistance and compliance respectively, the junction of having solved the gate valve is generally sealed through sealed the pad, but the sealed effect of simple use is relatively poor to the problem of leakage risk has been increased.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of a cross-sectional structure of the communication pipe body of the present invention;

fig. 3 is a schematic view of the structure of the gasket body of the present invention.

In the figure: 1. a gate valve body; 2. a first flange; 3. a communicating pipe body; 4. a second flange; 5. a sealing gasket; 501. a gasket body; 502. a layer of nitrile rubber; 503. and an ethylene propylene rubber layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses a gate valve body 1, first flange 2, communicating pipe body 3, second flange 4, seal ring 5, sealing washer body 501, butadiene acrylonitrile rubber layer 502 and the parts of EPR layer 503 are the parts that general standard spare or field technician know, and its structure and principle all are that this technical staff all can learn through the technical manual or learn through conventional experimental method.

Referring to fig. 1-3, a gate valve with good sealing effect includes a gate valve body 1, a first flange 2 is fixedly connected to both sides of the gate valve body 1, a communication pipe body 3 is communicated to both sides of the first flange 2, a second flange 4 is fixedly connected to one side of the communication pipe body 3 close to the gate valve body 1, a sealing gasket 5 is disposed between the first flange 2 and the second flange 4, one end of the sealing gasket 5 is located in an inner cavity of the communication pipe body 3, one end of the gate valve body 1 extends to the inner cavity of the communication pipe body 3, holes are disposed at upper and lower ends of the first flange 2, the second flange 4 and the sealing gasket 5, the first flange 2, the second flange 4 and the sealing gasket 5 are connected by bolts and threads, the sealing gasket 5 includes a sealing gasket body 501, a nitrile rubber layer 502 is disposed on a surface of the sealing gasket body 501, and an ethylene propylene rubber layer 503 is disposed on one side of the nitrile rubber layer, the gate valve body 1 is located the surface of 3 inner chambers one ends of communicating pipe body and contacts with seal ring 5, and be located seal ring 5's inner chamber, through setting up first flange 2, second flange 4 and seal ring 5, the sealed effect of junction to gate valve body 1 and communicating pipe body 3 has been played, wherein buna n rubber layer 502 and EPR layer 503 have played resistant oil respectively, wear-resisting, ageing-resistant and strong effect and the hot water tolerance of gas tightness, corrosion resistance, the effect of ageing resistance and compliance, the junction that has solved the gate valve is sealed up generally and is sealed up, but the simple sealed effect that seals up that uses is relatively poor, thereby the problem of leakage risk has been increased.

During the use, through setting up first flange 2, second flange 4 and seal ring 5, played the effect sealed to the junction of gate valve body 1 and communicating pipe body 3, wherein butadiene acrylonitrile rubber layer 502 and EPR layer 503 have played the effect of resistant oil, wear-resisting, ageing-resistant and strong gas tightness and the effect of hot water resistance, corrosion resistance, ageing resistance and compliance respectively, solved the junction of gate valve and generally sealed through sealed the pad, but the simple sealed effect that uses of sealed pad is relatively poor to the problem of leakage risk has been increased.

The standard parts used in the present application document can be purchased from the market, and can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts the conventional means of mature bolt, rivet, welding and the like in the prior art, the machines, parts and equipment adopt the conventional models in the prior art, the control mode is automatically controlled by a controller, the control circuit of the controller can be realized by simple programming of technicians in the field, the control circuit belongs to the common knowledge in the field, and the present application document is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the present application.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sealed effectual gate valve, includes gate valve body (1), its characterized in that: the gate valve comprises a gate valve body (1), and is characterized in that first flanges (2) are fixedly connected to two sides of the gate valve body (1), the two sides of the first flanges (2) are communicated with a communicating pipe body (3), one side of the communicating pipe body (3) close to the gate valve body (1) is fixedly connected with a second flange (4), and a sealing gasket (5) is arranged between the first flanges (2) and the second flange (4).

2. The gate valve with good sealing effect according to claim 1, wherein: one end of the sealing washer (5) is positioned in the inner cavity of the communicating pipe body (3), and one end of the gate valve body (1) extends to the inner cavity of the communicating pipe body (3).

3. The gate valve with good sealing effect according to claim 1, wherein: the hole has all been seted up to the upper end and the lower extreme of first flange (2), second flange (4) and seal ring (5), and passes through bolt threaded connection between first flange (2), second flange (4) and seal ring (5).

4. The gate valve with good sealing effect according to claim 1, wherein: the sealing washer (5) comprises a sealing washer body (501), a nitrile rubber layer (502) is arranged on the surface of the sealing washer body (501), and an ethylene propylene rubber layer (503) is arranged on one side, away from the sealing washer body (501), of the nitrile rubber layer (502).

5. The gate valve with good sealing effect according to claim 1, wherein: the gate valve body (1) is located the surface of communicating pipe body (3) inner chamber one end and seals the contact of ring (5), and is located the inner chamber of seal ring (5).