CN211667206U

CN211667206U - Check valve with elastic jacking device

Info

Publication number: CN211667206U
Application number: CN201922253370.7U
Authority: CN
Inventors: 朱孝有
Original assignee: Zhejiang Yfm Valve Co ltd
Current assignee: Zhejiang Yfm Valve Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-13
Anticipated expiration: 2029-12-16

Abstract

The utility model provides a take check valve of elasticity roof pressure device, including valve body, valve gap and sealing member, valve gap and valve body fixed connection, the sealing member is the spheroid, through be equipped with the elasticity roof pressure device that exerts elastic force to the sealing member between sealing member and valve gap. Through the arrangement of the elastic jacking device, when a medium flows to the check valve, the elastic jacking device plays a role in micro buffering, and prevents the ball from being damaged due to contact collision of the ball and the valve cover caused by medium scouring; the pressure spring lifting type fluorine lining check valve firstly seals the ball and the valve seat of the valve body by the force of the spring, and can better cling to the valve seat on the valve body by the pressure of medium backflow and the gravity of the valve core ball per se, so that the leakage risk is reduced to the minimum.

Description

Check valve with elastic jacking device

Technical Field

The utility model belongs to the technical field of the valve, especially, relate to a check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The check valve and the stop valve are combined for use, and the safety isolation effect can be achieved. When the pipeline is closed, the traditional check valve is sealed by the pressure of medium backflow or the gravity of the valve core of the traditional check valve, if the backflow pressure is low and the valve core of the traditional check valve is light, the sealing performance of the traditional check valve has obvious leakage risk, and in addition, the single type of the traditional check valve can only be installed horizontally or only can be installed vertically.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is how to improve the sealing performance of check valve, reduces the risk of revealing.

The utility model discloses a realize through following technical scheme:

the utility model provides a take check valve of elasticity roof pressure device, including valve body, valve gap and sealing member, valve gap and valve body fixed connection, the sealing member be the spheroid, through be equipped with the elasticity roof pressure device who applys elastic force to the sealing member between sealing member and valve gap. The valve core of the check valve is designed into a freely movable sphere, so that the product is simple in structure and can be quickly assembled. Through the arrangement of the elastic jacking device, when a medium flows to the check valve, the elastic jacking device plays a role in micro buffering, and prevents the ball from being damaged due to contact collision of the ball and the valve cover caused by medium scouring; the pressure spring lifting type fluorine lining check valve firstly seals the ball and the valve seat of the valve body by the force of the spring, and can better cling to the valve seat on the valve body by the pressure of medium backflow and the gravity of the valve core ball per se, so that the leakage risk is reduced to the minimum.

In order to solve the defect that traditional check valve can only horizontal installation or perpendicular installation, the utility model discloses will the medium import and the medium export of valve body be perpendicular setting, take compression spring over-and-under type fluorine lining check valve to all can install the use in the arbitrary direction of pipeline to compression spring over-and-under type fluorine lining check valve body is 90 structures, and should install in 90 flow direction changes departments, in order to save the elbow.

Drawings

Fig. 1 is a sectional view of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples.

Examples

As shown in fig. 1, the valve is a check valve with an elastic pressing device 4, and includes a valve body 1, a valve cover 2 and a sealing element 3, the valve cover 2 is fixedly connected with the valve body 1, the sealing element 3 is a sphere, and the sphere in this embodiment is a solid sphere or a hollow sphere. An elastic pressing device 4 for applying elastic force to the sealing member 3 is arranged between the sealing member 3 and the valve cover 2. The elastic jacking device 4 is a spring. One end of the spring is abutted against the inner wall of the valve cover 2, and the other end of the spring is abutted against the spherical surface of the sealing element 3.

In order to adapt the valve to the change of the flow direction, the medium inlet 11 and the medium outlet 12 of the valve body 1 are vertically arranged. The pressure spring lifting type fluorine lining check valve body 1 is of a 90-degree structure and is suitable to be arranged at a 90-degree flow direction change position so as to save elbows.

In order to make the sealing member 3 move in the valve body 1, an annular bulge 21 is arranged on the valve cover 2 and protrudes to one side, an elastic member is arranged in the annular bulge 21, and the sealing member 3 moves in the annular bulge 21 when moving. The inner diameter of the annular bulge 21 is larger than the outer diameter of the sphere. So that it does not collide with the valve cap 2 with a large impact force.

In order that the setting of the annular protrusion 21 does not affect the medium flow rate, the port part of the annular protrusion 21 is set to be in the shape of a chamfer 211, and the height of the protrusion closer to the medium outlet 12 is smaller, the chamfer in this embodiment is a circular pipe formed by obliquely cutting the circular pipe by a cutter and has a height difference, and as shown in the figure, the starting position of the chamfer 211 is almost in the same plane with the inner wall of the valve body 1 at the medium outlet 12.

In order to enable the valve body 1 to be suitable for the field of media with strong corrosivity, a fluorine lining layer is arranged on the inner wall of the valve body 1; the inner wall of the valve cover 2 and the surface of the annular bulge 21 of the valve cover 2 are both provided with fluorine lining layers. The valve body 1 and the valve cover 2 are provided with fluorine lining structures on the surfaces contacted by the medium, so that the service life of the valve body 1 is longer.

The valve body 1 has three ports including a medium inlet 11, a medium outlet 12 and a valve cover mounting port 13, wherein the elastic force of the elastic pressing device 4 is applied to the medium inlet 11.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that simple modifications and substitutions by those skilled in the art are within the scope of the present invention without departing from the spirit and scope of the present invention.

Claims

1. Take check valve of elasticity roof pressure device, including valve body, valve gap and sealing member, valve gap and valve body fixed connection, its characterized in that: the sealing element is a sphere, and an elastic jacking device which applies elastic force to the sealing element is arranged between the sealing element and the valve cover.

2. The check valve with elastic pressing device as set forth in claim 1, wherein: the elastic jacking device is a spring.

3. The check valve with elastic pressing device as set forth in claim 2, wherein: the medium inlet and the medium outlet of the valve body are vertically arranged.

4. The check valve with elastic pressing means as set forth in claim 1, 2 or 3, wherein: the valve cover is provided with an annular bulge which is convexly arranged towards one side, and the elastic piece is arranged in the annular bulge.

5. The check valve with elastic pressing device as set forth in claim 4, wherein: the port part of the annular bulge is in a chamfer shape, and the height of the bulge close to one side of the medium outlet is smaller.

6. The check valve with elastic pressing device as set forth in claim 5, wherein: the inner diameter of the annular bulge is larger than the outer diameter of the ball body.

7. The check valve with elastic pressing device as set forth in claim 6, wherein: the sphere is a solid sphere or a hollow sphere.

8. The check valve with elastic pressing means as set forth in claim 1, 2 or 3, wherein: a fluorine lining layer is arranged on the inner wall of the valve body; the inner wall of the valve cover and the surface of the annular bulge of the valve cover are both provided with fluorine lining layers.

9. The check valve with elastic pressing means as set forth in claim 1, 2 or 3, wherein: the valve body is provided with three openings, wherein the three openings comprise a medium inlet, a medium outlet and a valve cover mounting opening, and the elastic force of the elastic jacking device is applied to the medium inlet.

10. The check valve with elastic pressing device as set forth in claim 7, wherein: the valve body is provided with three openings, wherein the three openings comprise a medium inlet, a medium outlet and a valve cover mounting opening, and the elastic force of the elastic jacking device is applied to the medium inlet.