Impact-resistant check valve

Abstract

The utility model discloses an impact-resistant check valve, which belongs to the field of check valves and comprises a valve body, a Z-shaped partition plate is fixedly connected inside the valve body, a valve hole is arranged in the middle of the Z-shaped partition plate, a buffer area is arranged below the valve hole, a guide rod is fixedly connected with the Z-shaped partition plate above the valve hole, and the guide rod is fixedly connected with the valve hole. The surface of the guide rod is slidably sleeved with a valve clack, the lower surface of the valve clack is fixedly connected with a valve element, the top of the valve clack is fixedly connected with a guide pipe, the top of the valve body is fixedly provided with a top cover, the inner top wall of the top cover abuts against a guide column, the lower end of the guide column is movably inserted into the guide pipe, and a spring abuts between the guide column and the guide pipe. Through the arrangement of the Z-shaped partition plate, the valve hole, the buffer area and the buffer pad, when a pipeline is opened, fluid firstly enters the buffer area of the valve body, the fluid impacts on the buffer pad, steering buffering can be conducted on the impact of the fluid through the buffer area, the fluid impact is prevented from directly acting on the valve clack, and the service life of the check valve is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of check valves, and in particular relates to an impact-resistant check valve. Background Art

[0002] A check valve is a valve that has a circular disc as the opening and closing part and blocks the backflow of the medium by its own weight and the pressure of the medium. It belongs to the category of automatic valves and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. The disc movement mode is divided into lift type and swing type. The lift check valve is similar to the stop valve in structure, except that it lacks the valve stem that drives the disc. The medium flows in from the inlet end and flows out from the outlet end. When the inlet pressure is greater than the sum of the disc weight and its flow resistance, the valve is opened. On the contrary, when the medium flows back, the valve is closed.

[0003] When the pipeline is opened, the fluid medium will directly impact the check valve disc. The check valve disc will be instantly subjected to a large fluid impact, which can easily cause damage and shorten the life of the check valve. Utility Model Content

[0004] The purpose of the utility model is to provide an impact-resistant check valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an impact-resistant check valve, comprising a valve body, a Z-shaped baffle fixedly connected to the interior of the valve body, a valve hole opened in the middle of the Z-shaped baffle, a buffer zone provided below the valve hole, the Z-shaped baffle fixedly connected to a guide rod located above the valve hole, a valve flap slidably sleeved on the surface of the guide rod, a valve core fixedly connected to the lower surface of the valve flap, a conduit fixedly connected to the top of the valve flap, the upper end of the conduit slidably penetrates to the top of the valve body, a top cover fixedly installed on the top of the valve body, a guide column abutted against the inner top wall of the top cover, the lower end of the guide column movably inserted into the conduit, a spring abutted against the guide column and the conduit.

[0006] As a preferred implementation, flanges are provided at both ends of the valve body.

[0007] As a preferred implementation, a buffer pad is fixedly connected to the side wall of the Z-shaped partition close to the buffer zone.

[0008] As a preferred implementation, a sealing layer is fixedly connected to the outer surface of the valve core.

[0009] As a preferred implementation, a sealing ring is embedded and installed on the lower surface of the valve disc around the valve disc, and a sealing groove is formed on the upper surface of the Z-shaped partition around the valve hole.

[0010] As a preferred implementation, fastening bolts are inserted into both sides of the top cover, and the top cover is fixedly mounted on the valve body by the fastening bolts.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The impact-resistant check valve is provided with a Z-shaped partition, a valve hole, a buffer zone and a buffer pad. When the pipeline is opened, the fluid first enters the buffer zone of the valve body, and the fluid impacts the buffer pad, and then lifts the valve core in the valve hole. The buffer zone can be used to redirect and buffer the impact of the fluid, thereby preventing the fluid impact from directly acting on the valve disc and extending the service life of the check valve.

[0013] The impact-resistant check valve is provided with a guide rod, a valve disc, a valve core, a guide tube, a top cover, a guide column and a spring. When the valve is closed, the spring applies elastic force to the valve disc, so that the valve disc drives the valve core to be inserted into the valve hole for sealing. When the valve is opened, the fluid overcomes the elastic force of the spring to lift the valve core, so that the valve disc slides along the guide rod and the guide tube slides along the guide column, thereby improving the stability of the valve disc.

[0014] The impact-resistant check valve can remove the top cover through the arrangement of the conduit, the top cover, the guide column and the fastening bolts, and then the guide column can be taken out, and then the spring can be taken out, so that the spring can be replaced conveniently so that the spring can maintain the best elastic state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the valve of the utility model when it is opened;

[0017] Figure 3 This is a schematic diagram of the internal structure of the valve of the utility model when it is closed;

[0018] Figure 4 It is a structural schematic diagram of the valve core of the utility model.

[0019] In the figure: 1. valve body; 2. Z-shaped partition; 3. valve hole; 4. buffer zone; 5. guide rod; 6. valve disc; 7. valve core; 8. guide tube; 9. top cover; 10. guide column; 11. spring; 12. flange; 13. buffer pad; 14. sealing layer; 15. sealing ring; 16. sealing groove; 17. fastening bolts. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0022] See also Figure 1-4 The utility model provides an impact-resistant check valve, comprising a valve body 1. Both ends of the valve body 1 are provided with flanges 12, and the valve body 1 can be installed on a fluid pipeline through the flanges 12.

[0023] A Z-shaped partition 2 is fixedly connected to the inside of the valve body 1, a valve hole 3 is opened in the middle of the Z-shaped partition 2, a buffer zone 4 is provided below the valve hole 3, and a buffer pad 13 is fixedly connected to the side wall of the Z-shaped partition 2 close to the buffer zone 4. Through the arrangement of the Z-shaped partition 2, the valve hole 3, the buffer zone 4 and the buffer pad 13, when the pipeline is opened, the fluid first enters the buffer zone 4 of the valve body 1, the fluid impacts the buffer pad 13, and then lifts the valve core 7 in the valve hole 3. The impact of the fluid can be diverted and buffered by the buffer zone 4, so as to avoid the fluid impact directly acting on the valve disc 6, thereby extending the life of the check valve.

[0024] The Z-shaped partition 2 is located above the valve hole 3 and is fixedly connected with a guide rod 5. A valve disc 6 is slidably sleeved on the surface of the guide rod 5. A valve core 7 is fixedly connected to the lower surface of the valve disc 6. A guide tube 8 is fixedly connected to the top of the valve disc 6. The upper end of the guide tube 8 slides through the top of the valve body 1. A top cover 9 is fixedly installed on the top of the valve body 1. A guide column 10 is abutted on the inner top wall of the top cover 9. The lower end of the guide column 10 is movably inserted into the guide tube 8. A spring 11 is abutted between the guide column 10 and the guide tube 8. Through the arrangement of the guide rod 5, the valve disc 6, the valve core 7, the guide tube 8, the top cover 9, the guide column 10 and the spring 11, when the valve is closed, the spring 11 applies elastic force to the valve disc 6, so that the valve disc 6 drives the valve core 7 to insert into the valve hole 3 for sealing. When the valve is opened, the fluid overcomes the elastic force of the spring 11 to lift the valve core 7, so that the valve disc 6 slides along the guide rod 5, and the guide tube 8 slides along the guide column 10, thereby improving the stability of the valve disc 6.

[0025] Among them, the outer surface of the valve core 7 is fixedly connected with a sealing layer 14, and the sealing layer 14 can improve the sealing performance of the valve core 7. The lower surface of the valve flap 6 is located around the valve flap 6 and a sealing ring 15 is embedded and installed. The upper surface of the Z-shaped partition 2 is located around the valve hole 3 and a sealing groove 16 is opened. The sealing performance of the valve flap 6 can be improved by setting the sealing ring 15 and the sealing groove 16.

[0026] Among them, fastening bolts 17 are inserted on both sides of the top cover 9, and the top cover 9 is fixedly installed on the valve body 1 by the fastening bolts 17. Through the setting of the fastening bolts 17, the top cover 9 can be removed, and then the guide column 10 can be taken out, and then the spring 11 can be taken out, which is convenient for replacing the spring 11 so that the spring 11 maintains the best elastic state.

[0027] The working principle and use process of the utility model are as follows: firstly, through the arrangement of the Z-shaped partition plate 2, the valve hole 3, the buffer zone 4 and the buffer pad 13, when the pipeline is opened, the fluid first enters the buffer zone 4 of the valve body 1, the fluid impacts the buffer pad 13, and then lifts the valve core 7 in the valve hole 3, and the impact of the fluid can be redirected and buffered by the buffer zone 4 to avoid the fluid impact directly acting on the valve flap 6, thereby extending the life of the check valve; through the arrangement of the guide rod 5, the valve flap 6, the valve core 7, the conduit 8, the top cover 9, the guide column 10 and the spring 11, when the valve is closed, the spring 11 applies elastic force to the valve flap 6, so that the valve flap 6 drives the valve core 7 to insert into the valve hole 3 for sealing; when the valve is opened, the fluid overcomes the elastic force of the spring 11 to lift the valve core 7, so that the valve flap 6 slides along the guide rod 5, and the conduit 8 slides along the guide column 10, thereby improving the stability of the valve flap 6.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant check valve, comprising a valve body (1), characterized in that: A Z-shaped partition (2) is fixedly connected to the inside of the valve body (1), a valve hole (3) is opened in the middle of the Z-shaped partition (2), a buffer zone (4) is provided below the valve hole (3), a guide rod (5) is fixedly connected to the Z-shaped partition (2) above the valve hole (3), a valve flap (6) is slidably sleeved on the surface of the guide rod (5), a valve core (7) is fixedly connected to the lower surface of the valve flap (6), a conduit (8) is fixedly connected to the top of the valve flap (6), the upper end of the conduit (8) slides through the top of the valve body (1), a top cover (9) is fixedly installed on the top of the valve body (1), a guide column (10) is abutted against the inner top wall of the top cover (9), the lower end of the guide column (10) is movably inserted into the conduit (8), and a spring (11) is abutted between the guide column (10) and the conduit (8).

2. The impact-resistant check valve according to claim 1, characterized in that: Flanges (12) are provided at both ends of the valve body (1).

3. The impact-resistant check valve according to claim 1, characterized in that: A buffer pad (13) is fixedly connected to the side wall of the Z-shaped partition (2) close to the buffer zone (4).

4. The impact-resistant check valve according to claim 1, characterized in that: A sealing layer (14) is fixedly connected to the outer surface of the valve core (7).

5. The impact-resistant check valve according to claim 1, characterized in that: A sealing ring (15) is embedded and installed on the lower surface of the valve flap (6) around the valve flap (6), and a sealing groove (16) is opened on the upper surface of the Z-shaped partition (2) around the valve hole (3).

6. The impact-resistant check valve according to claim 1, characterized in that: Fastening bolts (17) are inserted into both sides of the top cover (9), and the top cover (9) is fixedly mounted on the valve body (1) by means of the fastening bolts (17).

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