Check valve provided with opening and closing water flow impact relieving structure

Abstract

The utility model provides a check valve with a structure for slowing down opening and closing water flow impact, which comprises a valve body, a valve cover is arranged at the upper end of the valve body, connecting parts are arranged on the left side and the right side of the valve body, external connecting pipes are arranged inside the connecting parts, a fixing plate is fixedly connected inside the valve body, and the fixing plate is fixedly connected with the valve cover. Compared with the prior art, the pipeline fixing device has the advantages that by arranging the reset component and the buffer component, fluid impact can be reduced, and the situation that a pipeline system is unstable due to strenuous vibration and damage of the pipeline is avoided; meanwhile, abrasion caused by the valve clack and the sealing face is reduced, and in addition, the check valve can be conveniently detached from a pipeline system to be maintained through the arrangement of the connecting part convenient to detach.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically relates to a check valve equipped with a structure to reduce the impact of water flow during opening and closing. Background Technology

[0002] A check valve is a type of valve used in piping systems, primarily to prevent the backflow of fluid. Its basic function is to allow fluid to flow in one direction while preventing reverse flow. Check valves play a vital role in industrial and construction applications, ensuring the safety and efficiency of the system. Selecting the appropriate type and performing regular maintenance are key to ensuring the long-term stable operation of check valves.

[0003] When a check valve is used, the sudden change in fluid flow when the pipeline system is opened may cause a large water hammer effect. If the check valve does not have a certain buffering efficiency, it may cause severe vibration and damage to the pipeline, leading to instability of the pipeline system. Furthermore, frequent impacts and vibrations will accelerate the wear of the valve disc and seat, shorten the service life of the valve, and further increase maintenance costs.

[0004] Therefore, we hope to design a check valve with a structure that mitigates the impact of water flow during opening and closing, thereby solving this problem. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a check valve equipped with a structure to mitigate the impact of water flow during opening and closing, thereby solving the problems mentioned in the background art.

[0006] This utility model is achieved through the following technical solution: a check valve configured with a structure to reduce the impact of water flow during opening and closing, including a valve body, a valve cover at the upper end of the valve body, connecting components on both the left and right sides of the valve body, an external connecting pipe inside the connecting component, a fixing plate fixedly connected inside the valve body, a reset component on the left side of the fixing plate, and a buffer component on the reset component.

[0007] The reset component includes a support cylinder, which is fixedly connected to the left side surface of the fixing plate. A first spring is provided inside the support cylinder, and a connecting block is slidably sleeved inside the support cylinder. One end of the first spring is fixedly connected to the bottom of the support cylinder, and the other end of the first spring is fixedly connected to the connecting block. By setting the reset component, a buffering effect is achieved when the valve disc is impacted.

[0008] In a preferred embodiment, the fixing plate has a plurality of through holes for liquid to pass through.

[0009] In a preferred embodiment, the buffer component includes a connecting plate, which is fixedly connected to the left side surface of the connecting block. A sliding rod slides through the inside of the connecting plate, and a second spring is provided on the outside of the sliding rod. A valve is fixedly connected to the left end of the sliding rod. One end of the second spring is fixedly connected to the valve, and the other end of the second spring is fixedly connected to the connecting plate. By providing the buffer component, the impact resistance is further improved.

[0010] In a preferred embodiment, a sealing gasket is provided inside the valve body, and the sealing gasket contacts the left side surface of the valve disc to prevent liquid leakage.

[0011] In a preferred embodiment, the connecting component includes two connecting pipes, one end of which is fixedly connected to the left and right ends of the valve body, and the other end of which is fixedly connected to a first chuck. By setting the connecting component, the disassembly and maintenance of the valve body is made more convenient.

[0012] In a preferred embodiment, one end of the external connecting tube is fixedly connected to a second chuck, which is used to connect with the first chuck.

[0013] In a preferred embodiment, a rubber sealing gasket is provided between the first chuck and the second chuck. The rubber sealing gasket is used to prevent fluid leakage, and the first chuck and the second chuck are fixedly connected by a clamp.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are as follows: by setting the reset component and the buffer component, the fluid impact can be reduced, the pressure fluctuation generated during the system opening process can be reduced, and the pipeline can be prevented from violently vibrating and being damaged, which would lead to the instability of the pipeline system. At the same time, the wear caused by the valve disc and the sealing surface can be reduced, and the service life of the check valve can be extended. In addition, by setting the connecting component that is easy to disassemble, the check valve can be easily removed from the pipeline system for maintenance and upkeep. Attached Figure Description

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is a front right oblique view of a check valve of the present invention, which is equipped with a structure to reduce the impact of water flow during opening and closing.

[0017] Figure 2This is a cross-sectional view of the connecting component of a check valve equipped with a structure to mitigate the impact of water flow during opening and closing, according to this utility model.

[0018] Figure 3 This is a cross-sectional view of the valve body of a check valve equipped with a structure to mitigate the impact of water flow during opening and closing, according to this utility model.

[0019] In the diagram, 1-valve body, 2-valve cover, 3-connecting component, 4-external connecting pipe, 5-fixing plate, 6-reset component, 7-buffer component;

[0020] 31-Connecting pipe, 32-First connecting plate, 33-Clamp;

[0021] 61-Support cylinder, 62-First spring, 63-Connecting block;

[0022] 71-Connecting plate, 72-Slide rod, 73-Second spring, 74-Valve disc. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 3 This utility model provides a technical solution: a check valve configured with a structure to reduce the impact of water flow during opening and closing, including a valve body 1, a valve cover 2 at the upper end of the valve body 1, connecting parts 3 on both the left and right sides of the valve body 1, an external connecting pipe 4 inside the connecting parts 3, a fixing plate 5 fixedly connected inside the valve body 1, a reset part 6 on the left side of the fixing plate 5, and a buffer part 7 on the reset part 6.

[0025] The reset component 6 includes a support cylinder 61, which is fixedly connected to the left side surface of the fixing plate 5. A first spring 62 is provided inside the support cylinder 61, and a connecting block 63 is slidably sleeved inside the support cylinder 61. One end of the first spring 62 is fixedly connected to the bottom of the support cylinder 61, and the other end of the first spring 62 is fixedly connected to the connecting block 63. By setting the reset component 6, a buffering effect is achieved when the valve disc 74 is impacted.

[0026] The fixing plate 5 has several through holes for liquid to pass through.

[0027] The buffer component 7 includes a connecting plate 71, which is fixedly connected to the left side surface of the connecting block 63. A slide rod 72 slides through the inside of the connecting plate 71, and a second spring 73 is provided on the outside of the slide rod 72. A valve disc 74 is fixedly connected to the left end of the slide rod 72. One end of the second spring 73 is fixedly connected to the valve disc 74, and the other end of the second spring 73 is fixedly connected to the connecting plate 71. By setting the buffer component 7, the impact resistance is further improved.

[0028] A sealing gasket is provided inside the valve body 1. The sealing gasket is in contact with the left side surface of the valve disc 74. The sealing gasket is used to prevent liquid leakage.

[0029] The connecting component 3 includes two connecting pipes 31. One end of each connecting pipe 31 is fixedly connected to the left and right ends of the valve body 1, and the other end of the connecting pipe 31 is fixedly connected to the first chuck 32. By setting the connecting component 3, the disassembly and maintenance of the valve body 1 is made more convenient.

[0030] One end of the external connecting pipe 4 is fixedly connected to a second chuck, which is used to connect with the first chuck 32.

[0031] A rubber sealing gasket is provided between the first chuck 32 and the second chuck to prevent fluid leakage. The first chuck 32 and the second chuck are fixedly connected by a clamp 33.

[0032] Please see Figures 1 to 3 As the first embodiment of this utility model: In order to solve the problem that water flow impact may cause severe vibration and damage to the pipeline, leading to instability of the pipeline system, and that impact and vibration will accelerate the wear of valve disc and seat ring, shortening the service life of the valve, during the start-up of the pipeline system, the fluid will first pass through the limiting ring 343 and then enter the interior of the valve body 1. When the rapidly flowing fluid comes into contact with the valve disc 74, the valve disc 74 is first subjected to force, causing it to push the slide rod 72 to move. During the displacement process, the slide rod 72 simultaneously squeezes the second spring 73 to deform it, which plays a role in reducing the impact force, so as to protect the stability of the valve body 1 connection and reduce the impact wear of the valve disc 74. Then, as the fluid continues to flow in, it continuously applies pressure to the valve disc 74, causing it to push the connecting plate 71 to move. Furthermore, the connecting plate 71 pushes the connecting block 63 to move and compresses the first spring 62 to complete the full opening of the valve disc 74.

[0033] Please see Figures 1 to 3As a second embodiment of this utility model: based on the above embodiments, when it is necessary to disassemble and maintain the valve body 1, it is only necessary to open the clamps on the two connecting pipes 31 and then remove the valve body 1. Compared with the traditional bolt connection method, this connection method does not require the use of tools to disassemble multiple bolts, which is more convenient. The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A check valve equipped with a structure to mitigate the impact of water flow during opening and closing, comprising a valve body (1): characterized in that, The valve body (1) is provided with a valve cover (2) at the upper end. The valve body (1) is provided with connecting parts (3) on both the left and right sides. The connecting parts (3) are provided with an external connecting pipe (4) inside. The valve body (1) is fixedly connected with a fixing plate (5). The fixing plate (5) is provided with a reset part (6) on the left side. The reset part (6) is provided with a buffer part (7). The reset component (6) includes a support cylinder (61), which is fixedly connected to the left side surface of the fixing plate (5). A first spring (62) is provided inside the support cylinder (61), and a connecting block (63) is slidably sleeved inside the support cylinder (61). One end of the first spring (62) is fixedly connected to the bottom of the support cylinder (61), and the other end of the first spring (62) is fixedly connected to the connecting block (63).

2. A check valve configured with a structure to mitigate the impact of water flow during opening and closing, as described in claim 1, characterized in that: The fixing plate (5) has several through holes for liquid to pass through.

3. A check valve configured with a structure to mitigate the impact of water flow during opening and closing, as described in claim 1, characterized in that: The buffer component (7) includes a connecting plate (71), which is fixedly connected to the left side surface of the connecting block (63). A slide rod (72) slides through the inside of the connecting plate (71), and a second spring (73) is provided on the outside of the slide rod (72). A valve disc (74) is fixedly connected to the left end of the slide rod (72). One end of the second spring (73) is fixedly connected to the valve disc (74), and the other end of the second spring (73) is fixedly connected to the connecting plate (71).

4. A check valve configured with a structure to mitigate the impact of water flow during opening and closing, as described in claim 1, characterized in that: The valve body (1) is provided with a sealing gasket inside, which is in contact with the left side surface of the valve disc (74) and is used to prevent liquid leakage.

5. A check valve configured with a structure to mitigate the impact of water flow during opening and closing, as described in claim 1, characterized in that: The connecting component (3) includes two connecting pipes (31), one end of which is fixedly connected to the left and right ends of the valve body (1), and the other end of which is fixedly connected to a first chuck (32).

6. A check valve configured with a structure to mitigate the impact of water flow during opening and closing, as described in claim 1, characterized in that: One end of the external connecting pipe (4) is fixedly connected to a second chuck, which is used to connect with the first chuck (32).

7. A check valve configured with a structure to mitigate the impact of water flow during opening and closing, as described in claim 6, characterized in that: A rubber sealing gasket is provided between the first chuck (32) and the second chuck. The rubber sealing gasket is used to prevent fluid leakage. The first chuck (32) and the second chuck are fixedly connected by a clamp (33).

Images