CN207437850U - Double-disc type metal sealing check valve - Google Patents

Abstract

The utility model discloses a double-petal metal-sealed one-way valve, which comprises a bulkhead, a main shaft, a sealing gasket A, a shaft sleeve, a spring, a valve plate, a valve body and a sealing gasket B. hole, and a main shaft is set in the round hole of the valve body, a bulkhead is installed in the round holes on both sides of the valve body, and the horizontal section shape of the valve body is circular, and a shaft sleeve is installed in the middle of the main shaft, and The spring is fixedly connected to the shaft sleeve, the spring is fixedly connected to one side of the valve plate, and the joint between the valve plate and the spring is provided with a sealing gasket A, and the joint between the main shaft and the valve body is provided with a sealing gasket B. The utility model uses the internal pressure of the pipeline to push the valve plate to rotate, so that the medium can pass through. When the inlet pressure is lower than the pressure behind the valve, the valve plate will be closed instantly to cut off the flow of the medium. The whole process is automatically adjusted without an external drive device. The structure of the device is simplified, and the installation of the device is convenient.

Description

Double flap metal seal check valve

technical field

The utility model relates to the technical field of valve body equipment, in particular to a double-petal metal-sealed one-way valve.

Background technique

The one-way valve is that the fluid can only flow along the fluid inlet, but the fluid outlet medium cannot flow back, commonly known as a one-way valve, and the one-way valve is also called a check valve or a check valve. It is used in the hydraulic system to prevent the reverse flow of oil flow, or in the pneumatic system to prevent the reverse flow of compressed air. It has a wide range of uses in the current mechanical equipment, but the current check valve generally requires an external drive device to brake and cut off. The medium in the pipeline ensures that the medium can only flow from one direction, saving the medium that causes backflow due to pressure changes, but the installation of an external drive device makes the structure of the one-way valve too complicated, which is not easy to install, and also increases the production cost of the device.

Utility model content

The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a double-lobe metal-sealed one-way valve.

In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a double-petal metal-sealed one-way valve, including a bulkhead, a main shaft, a sealing gasket A, a shaft sleeve, a spring, a valve plate, a valve body and a sealing gasket B , the middle position of the valve body is provided with a round hole, and the round hole of the valve body is provided with a spindle, the round holes on both sides of the valve body are equipped with a bulkhead, and the horizontal cross-sectional shape of the valve body is circular, so A shaft sleeve is installed at the middle position of the main shaft, and the spring is fixedly connected with the shaft sleeve. The spring is fixedly connected with one side of the valve plate, and a sealing gasket A is arranged at the joint between the valve plate and the spring. The main shaft and the valve A sealing gasket B is provided at the junction of the body.

Preferably, the main shaft and the shaft sleeve are flexibly connected.

Preferably, the valve body and the valve plate are made of stainless steel, and the cross-sectional shape of the valve plate is circular.

Preferably, the diameter of the section circle of the valve plate is smaller than the section diameter of the central hole of the valve body, and gaskets are installed on the edge of the valve plate.

Preferably, the length of the main shaft is smaller than the maximum diameter of the valve body.

The beneficial effect achieved by the utility model is that the internal pressure of the pipeline is used to push the valve plate to rotate so that the medium passes through. When the inlet pressure is lower than the pressure behind the valve, the valve plate will be closed instantly to cut off the flow of the medium. The whole process is automatically adjusted without The external drive device greatly simplifies the structure of the device and facilitates the installation of the device. At the same time, the connection between the valve plate and the main shaft, and the connection between the main shaft and the valve body are respectively provided with a sealing gasket A and a sealing gasket B, so that the device It has high sealing performance, effectively avoids valve port leakage, and has excellent performance.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a sectional view of the utility model.

1. Blind head; 2. Main shaft; 3. Gasket A; 4. Bushing; 5. Spring; 6. Bonnet; 7. Valve plate; 8. Gasket B.

Detailed ways

The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

Example 1

As shown in Figure 1-2, the double-disc metal-sealed check valve includes bulkhead 1, main shaft 2, sealing gasket A3, bushing 4, spring 5, valve plate 6, valve body 7 and sealing gasket B8, the valve There is a round hole in the middle of the body 7, the main function is to ensure the connection with the pipeline, to undertake the fixed position of the valve trim and the upper cover, and the main shaft 2 is set in the round hole of the valve body 7, and the round holes on both sides of the valve body 7 are installed There is a bulkhead 1 and a sealed valve body 7 to prevent medium leakage, and the horizontal cross-section of the valve body 7 is circular. The middle position of the main shaft 2 is equipped with a shaft sleeve 4, and the spring 5 is fixedly connected with the shaft sleeve 4. The spring 5 and the shaft sleeve 4 are fixedly connected. One side of the valve plate 6 is fixedly connected, and the connection between the valve plate 6 and the spring 5 is provided with a sealing gasket A3, which can reduce noise, reduce friction and cushioning effect, and the connection between the main shaft 2 and the valve body 7 is provided with a sealing gasket B8 , connect the valve plate 6 and the valve body 7, and fix the relative position, the main shaft 2 and the sleeve 4 are connected flexibly, the valve body 7 and the valve plate 6 are made of stainless steel metal components, and the cross-sectional shape of the valve plate 6 is circular , the diameter of the section circle of the valve plate 6 is smaller than the section diameter of the central hole of the valve body 7, and a gasket is installed on the edge of the valve plate 6, and the inside is opened and closed to ensure sealing, and the length of the main shaft 2 is less than the maximum diameter of the valve body 7.

Working principle: The fluid flows in one direction in the pipeline, and the internal pressure of the pipeline is used to push the sealed one-way valve plate 6. The spring 5 deforms and the valve plate 6 opens, and the medium passes through. When the inlet pressure is lower than the pressure behind the valve, the spring 5 recovers. In the original state, the valve plate 6 will be closed instantly to cut off the flow of the medium. The whole process is automatically adjusted without the need for an external drive device, which greatly simplifies the structure of the device and facilitates the installation of the device. At the same time, at the connection between the valve plate 6 and the main shaft 2, The connection between the main shaft 2 and the valve body 7 is respectively provided with a sealing gasket A3 and a sealing gasket B8, so that the device has a high sealing performance, effectively avoiding the leakage of the valve port, and having excellent performance.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (5)

1. Double-disc type metal sealing check valve, including silently（1）, main shaft（2）, gasket seal A（3）, axle sleeve（4）, spring（5）、 Valve plate（6）, valve body（7）With gasket seal B（8）, it is characterised in that：The valve body（7）Centre position be provided with circular hole, and valve Body（7）Circular hole in be provided with main shaft（2）, the valve body（7）It is equipped with silently in the circular hole of both sides（1）, and valve body（7）Water Plane section shape is circular, the main shaft（2）Centre position axle sleeve is installed（4）, and spring（5）With axle sleeve（4）It is fixed to connect It connects, the spring（5）With valve plate（6）One side be fixedly connected, and valve plate（6）With spring（5）Junction be provided with sealing Gasket A（3）, the main shaft（2）With valve body（7）Junction be provided with gasket seal B（8）.

2. Double-disc type metal sealing check valve according to claim 1, it is characterised in that：The main shaft（2）With axle sleeve（4） Between for flexible connection.

3. Double-disc type metal sealing check valve according to claim 1, it is characterised in that：The valve body（7）With valve plate（6） For stainless steel metal material members, and valve plate（6）Cross sectional shape for circle.

4. Double-disc type metal sealing check valve according to claim 1, it is characterised in that：The valve plate（6）Section circle Diameter is less than valve body（7）The diameter of section of centre bore, and valve plate（6）Edge gasket is installed.

5. Double-disc type metal sealing check valve according to claim 1, it is characterised in that：The main shaft（2）Length it is small In valve body（7）Maximum gauge.