Lifting type check valve

Abstract

The utility model provides a lift type check valve, which relates to the technical field of check valves and comprises a shell, a check valve body is mounted in the shell, connecting pipes are mounted at two ends of the check valve body in a connecting manner, a first cushioning mechanism is arranged at the top end of the check valve body, a second cushioning mechanism is arranged at the bottom end of the check valve body, and the connecting pipes are connected with the first cushioning mechanism and the second cushioning mechanism. A third cushioning mechanism is arranged on the two sides of the check valve body, a pipeline is installed in the check valve body, a sealing piece is installed in the check valve body, and a buffering mechanism is arranged in the pipeline. According to the check valve, under the action of the baffle, impact force can be buffered firstly, the impact force is prevented from directly impacting a sealing piece, the protection efficiency of the sealing piece is indirectly improved, meanwhile, the service life of the check valve body is greatly prolonged, and the practicability is greatly improved through the design.

Description

Technical Field

[0001] The utility model belongs to the technical field of check valves, and more specifically, particularly relates to a lifting check valve. Background Art

[0002] A lift check valve is a valve that automatically opens and closes the valve disc by relying on the flow of the medium itself to prevent the backflow of the medium. It is also called a non-return valve, a one-way valve, a reverse flow valve, and a back pressure valve. The check valve is an automatic valve. Its main function is to prevent the backflow of the medium, the reversal of the pump and the drive motor, and the release of the container medium. The check valve can also be used to provide supply to the auxiliary system where the pressure may rise to exceed the system pressure. The check valve can be mainly divided into a swing check valve (rotating according to the center of gravity) and a lift check valve (moving along the axis).

[0003] Based on the above, the inventors have discovered the following problems: During the use of the existing lift check valve, when the medium flows back, a large impact will be generated, which will cause wear on the internal seals and also cause vibration to the valve body itself. The vibration will damage the components and reduce its service life, indirectly causing inconvenience to the staff.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a lifting check valve is provided to achieve a purpose with greater practical value. Utility Model Content

[0005] The purpose and effect of the lifting check valve of the utility model are achieved by the following specific technical means:

[0006] A lifting check valve comprises a shell, a check valve body is installed inside the shell, connecting pipes are installed at both ends of the check valve body, a shock absorbing mechanism 1 is arranged at the top end of the check valve body, a shock absorbing mechanism 2 is arranged at the bottom end of the check valve body, a group of shock absorbing mechanisms 3 are arranged on both sides of the check valve body, a pipeline is installed inside the check valve body, a seal is installed inside the check valve body, and a buffer mechanism is arranged inside the pipeline.

[0007] Furthermore, the shock absorbing mechanism 1 includes a group of shock absorbers 1, one end of the shock absorber 1 is connected and installed with a connecting plate 1, and one end of the connecting plate 1 is in contact with the top end of the check valve body.

[0008] Furthermore, the second shock absorbing mechanism includes a set of shock absorbers 2, a support member is installed on the top end of the shock absorber 2, and one end of the support member is installed to the bottom end of the check valve body.

[0009] Furthermore, the shock absorbing mechanism three includes a plurality of groups of shock absorbers three, and a connecting plate two is fixedly mounted on one end of the shock absorber three.

[0010] Furthermore, a rubber pad is provided at one end of the second connecting plate.

[0011] Furthermore, the buffer mechanism includes a rotating shaft, one end of which is connected to a baffle, a surface of which is provided with a plurality of through holes, a side of which is provided with a groove, and the baffle matches the groove.

[0012] Furthermore, an arc-shaped limiting groove is provided on the inner wall of the pipe, and one end of the baffle is installed in the arc-shaped limiting groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] Through the cooperation among the shock absorbing mechanism 1, the shock absorbing mechanism 2 and the shock absorbing mechanism 3, when an impact occurs inside the check valve body, the vibration frequency of the check valve body can be effectively reduced, and the internal components can be protected, thereby indirectly improving the protection efficiency of the check valve and also improving the service life of the check valve.

[0015] Through the cooperation between the baffle and the arc-shaped limit groove, when the seal inside the check valve body is closed, the medium will first impact the baffle when it flows back. Under the action of the baffle, the impact force will be buffered first to avoid the impact force directly impacting the seal, thereby indirectly improving the protection efficiency of the seal. At the same time, it also greatly improves the service life of the check valve body, and this design greatly increases practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a three-dimensional schematic diagram of a lifting check valve.

[0017] Figure 2 The utility model is a side view plane section schematic diagram of a lifting check valve.

[0018] Figure 3 The utility model is a schematic diagram of a lifting check valve in a top view and a cross-sectional view.

[0019] Figure 4 The utility model is a schematic diagram of the internal plane of a lift check valve body.

[0020] Figure 5 The utility model is a schematic top view of a partial mechanism of a lifting check valve.

[0021] Figure 6 The utility model is a three-dimensional schematic diagram of a partial mechanism of a lifting check valve.

[0022] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0023] 1. Shell; 2. Connecting pipe; 3. Check valve body; 4. Shock absorber 1; 5. Connecting plate 1; 6. Support; 7. Shock absorber 2; 8. Shock absorber 3; 9. Connecting plate 2; 10. Rubber pad; 11. Pipe; 12. Seal; 13. Through hole; 14. Baffle; 15. Arc limit groove; 16. Rotating shaft; 17. Groove. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example:

[0028] As attached Figure 1 To Attachment Figure 6 As shown:

[0029] The utility model provides a lifting check valve, comprising a shell 1, a check valve body 3 is installed inside the shell 1, connecting pipes 2 are connected to both ends of the check valve body 3, a damping mechanism 1 is arranged at the top of the check valve body 3, a damping mechanism 2 is arranged at the bottom of the check valve body 3, a group of damping mechanisms 3 are arranged on both sides of the check valve body 3, a pipeline 11 is installed inside the check valve body 3, a sealing member 12 is installed inside the check valve body 3, and a buffer mechanism is arranged inside the pipeline 11.

[0030] Among them, the shock absorbing mechanism includes a group of shock absorbers 4, one end of the shock absorber 4 is connected and installed with a connecting plate 5, and one end of the connecting plate 5 is fitted with the top of the check valve body 3; through the cooperation between the shock absorber 4 and the connecting plate 5, when an impact occurs inside the check valve body 3, the vibration frequency of the check valve body 3 can be effectively reduced, and the internal components can be protected, thereby indirectly improving the protection efficiency of the check valve, and also improving the service life of the check valve.

[0031] The second shock absorbing mechanism includes a group of shock absorbers 7 , a support member 6 is installed on the top of the shock absorber 7 , and one end of the support member 6 is installed to the bottom end of the check valve body 3 .

[0032] The shock absorbing mechanism three includes a plurality of groups of shock absorbers three 8, and a connecting plate two 9 is fixedly mounted on one end of the shock absorber three 8.

[0033] Among them, a rubber pad 10 is arranged at one end of the connecting plate 2 9; through the cooperation between the connecting plate 2 9 and the rubber pad 10, the rubber pad 10 will protect the check valve body 3 to avoid friction caused by vibration, thereby making its protection efficiency better.

[0034] The buffer mechanism includes a shaft 16 , one end of which is connected to a baffle 14 , a surface of which is provided with a plurality of through holes 13 , a side of which is provided with a groove 17 , and the baffle 14 matches the groove 17 .

[0035] Among them, the inner wall of the pipe 11 is provided with an arc-shaped limit groove 15, and one end of the baffle 14 is installed in the arc-shaped limit groove 15; through the cooperation between the baffle 14 and the arc-shaped limit groove 15, when the seal 12 inside the check valve body 3 is closed, the medium will first impact the baffle 14 when it flows back, and under the action of the baffle 14, the impact force will be buffered first to avoid the impact force directly impacting the seal 12, thereby indirectly improving the protection efficiency of the seal 12, and at the same time greatly improving the service life of the check valve body 3, and this design greatly increases the practicality.

[0036] The specific usage and function of this embodiment are as follows:

[0037] Before the utility model is installed and used, the staff needs to check the internal components or structures of the check valve. After the inspection is correct, it can be normally connected, installed and used. During use, through the cooperation between the shock-absorbing mechanism one, the shock-absorbing mechanism two and the shock-absorbing mechanism three, when an impact occurs inside the check valve body 3, the vibration frequency of the check valve body 3 can be effectively reduced, and the internal components can be protected, thereby indirectly improving the protection efficiency of the check valve, and also improving the service life of the check valve. At the same time, when the seal 12 inside the check valve body 3 is closed, the medium will first impact the baffle 14 when it flows back. Under the action of the baffle 14, the impact force will be buffered first to avoid the impact force directly impacting the seal 12, thereby indirectly improving the protection efficiency of the seal 12, and also greatly improving the service life of the check valve body 3, and this design greatly increases the practicality.

[0038] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

Claims

1. A lift check valve, comprising a housing (1), characterized in that: A check valve body (3) is installed inside the shell (1), and connecting pipes (2) are installed at both ends of the check valve body (3). A first shock absorbing mechanism is provided at the top end of the check valve body (3), and a second shock absorbing mechanism is provided at the bottom end of the check valve body (3). A set of third shock absorbing mechanisms is provided on both sides of the check valve body (3). A pipeline (11) is installed inside the check valve body (3), and a sealing member (12) is installed inside the check valve body (3). A buffer mechanism is provided inside the pipeline (11).

2. A lift check valve as claimed in claim 1, characterized in that: The shock absorbing mechanism 1 comprises a group of shock absorbers 1 (4), one end of which is connected to a connecting plate 1 (5), and one end of which is fitted with the top end of the check valve body (3).

3. A lift check valve as claimed in claim 1, characterized in that: The second shock absorbing mechanism comprises a group of second shock absorbers (7), a support member (6) is installed at the top end of the second shock absorber (7), and one end of the support member (6) is installed to the bottom end of the check valve body (3).

4. A lift check valve as claimed in claim 1, characterized in that: The shock absorbing mechanism three comprises a plurality of groups of shock absorbers three (8), and a connecting plate two (9) is fixedly mounted on one end of the shock absorber three (8).

5. A lift check valve as claimed in claim 4, characterized in that: A rubber pad (10) is provided at one end of the second connecting plate (9).

6. A lift check valve as claimed in claim 1, characterized in that: The buffer mechanism comprises a rotating shaft (16), one end of the rotating shaft (16) is connected to a baffle (14), a surface of the baffle (14) is provided with a plurality of through holes (13), one side of the rotating shaft (16) is provided with a groove (17), and the baffle (14) matches the groove (17).

7. A lift check valve as claimed in claim 6, characterized in that: An arc-shaped limiting groove (15) is provided on the inner wall of the pipe (11), and one end of the baffle (14) is installed in the arc-shaped limiting groove (15).

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