Slow-closing check valve with long service life

Abstract

The utility model relates to the technical field of valves, and provides a slowly-closed check valve which is not prone to abrasion, capable of preventing leakage and long in service life, and the slowly-closed check valve comprises a valve body and a water inlet cavity arranged in the valve body, and a water outlet cavity communicated with the water inlet cavity is further arranged in the valve body. An opening and closing column is further slidably arranged at the position, located at the connecting position of the water inlet cavity and the water outlet cavity, in the valve body, a reset spring is arranged between the top of the opening and closing column and the inner wall of the valve body, and a silica gel gasket is arranged at the position, located at the connecting position of the water inlet cavity and the water outlet cavity, of the inner wall of the valve body. And meanwhile, the opening and closing column is separated from the valve body through the silica gel gasket, and the impact force generated during contact is absorbed.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a slow-closing check valve with a long service life. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. Valves can quickly control the flow of fluids transported in pipelines and control the opening and closing of pipelines. They are widely used in life or production work. In the industrial field, a large amount of raw material fluids are required for pipeline transportation. In order to better control the flow and transportation of raw material fluids, staff will install valves on the pipelines, and then control pipeline transportation through valves, which effectively improves the controllability of pipeline transportation. And only need to rotate to quickly open and close and control the fluid flow. It is simple and convenient to operate and has strong applicability. Check valve is a type of valve. Installing a check valve in the pipeline can make the fluid in the pipeline flow in one direction. When the fluid in the pipeline flows backwards, the check valve will automatically close the pipeline to prevent the fluid from flowing backwards, and no manual operation is required.

[0003] Although the above-mentioned prior art can solve the corresponding technical problems, it still has certain defects: when the existing check valve quickly cuts off the flow of fluid, the check valve is opened due to the upward thrust generated by the fluid. The rapid cutting off of the flow of fluid will cause the check valve to close quickly, resulting in a violent collision between the opening and closing part and the valve body, which in turn causes the contact parts of the opening and closing part and the valve body to wear quickly, resulting in leakage, and shortening the life of the check valve. Utility Model Content

[0004] The utility model aims to provide a slow-closing check valve which is not easy to wear, prevents leakage and has a long service life in view of the defects and shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a slow-closing check valve with a long service life, comprising a valve body and a water inlet chamber arranged in the valve body, the valve body is also provided with a water outlet chamber connected to the water inlet chamber, the valve body is also slidably provided with an opening and closing column at the connecting position of the water inlet chamber and the water outlet chamber, a reset spring is provided between the top of the opening and closing column and the inner wall of the valve body, and a silicone gasket is provided on the inner wall of the valve body at the connecting position of the water inlet chamber and the water outlet chamber. When the fluid is quickly disconnected, the opening and closing column is quickly dropped by the elastic force of the reset spring and fits with the silicone gasket. At the same time, the opening and closing column is separated from the valve body through the silicone gasket and the impact force during contact is absorbed.

[0006] A further improvement is that the opening and closing column includes a sliding column slidably arranged on the inner wall of the valve body and a closing block slidably arranged on the bottom end of the sliding column, and a plurality of shock-absorbing elastic columns are arranged between the top of the closing block and the bottom end of the sliding column.

[0007] A further improvement is that a lower pressure plate is also provided on the top surface of the closed block.

[0008] A further improvement is that an upper top plate is also provided on the bottom surface of the closed block, and a plurality of arc-shaped grooves are provided on the bottom surface of the upper top plate.

[0009] A further improvement is that a silicone extrusion plate is slidably provided on the side wall of the closed block, and a buffer support block is provided between the silicone extrusion plate and the closed block.

[0010] A further improvement is that the buffer support block includes an elastic ring arranged between the silicone extrusion plate and the closed block body and an elastic support frame arranged on the inner wall of the elastic ring.

[0011] A further improvement is that the inner wall of the elastic ring is provided with a plurality of arc-shaped deformation grooves.

[0012] A further improvement is that the elastic support frame is composed of two arc-shaped plate structures vertically distributed along the center line of the elastic ring, a first magnet is provided on one side of the inner wall of the elastic support frame, and a second magnet is provided on the other side of the inner wall of the elastic support frame, and the first magnet and the second magnet have the same magnetic poles.

[0013] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: at the moment when the valve is closed, the silicone gasket provided in the valve body can cooperate with the extrusion plate of the side wall of the closing block to deform and absorb the impact force, and at the same time cooperate with the buffer support block to further absorb the impact while preventing rebound between the closing block and the silicone gasket, thereby ensuring the seal and slowly absorbing the impact force between the valve body and the closing block, so that the contact part between the closing block and the valve body will not be quickly worn due to the impact, thereby ensuring the sealing and extending the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic diagram of the front cross section of the check valve of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the front cross section of the opening and closing column of the utility model;

[0017] Figure 3 It is a structural schematic diagram of a front cross section of a buffer support block of the utility model. DETAILED DESCRIPTION

[0018] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0019] See also Figure 1-3 As shown, the technical solution adopted in this specific embodiment is: a slow-closing check valve with a long service life, comprising a valve body 1 and a water inlet chamber 2 arranged in the valve body 1, the valve body 1 is also provided with a water outlet chamber 3 connected to the water inlet chamber 2, the valve body 1 is also slidably provided with an opening and closing column 5 at the connection position between the water inlet chamber 2 and the water outlet chamber 3, the opening and closing column 5 comprises a sliding column 51 slidably arranged on the inner wall of the valve body 1 and a closing block 52 slidably arranged at the bottom end of the sliding column 51, and a plurality of shock-absorbing elastic Column 53, two are provided in this embodiment, a reset spring 6 is provided between the top of the opening and closing column 5 and the inner wall of the valve body 1, and a silicone gasket 4 is provided on the inner wall of the valve body 1 at the connection position between the water inlet chamber 2 and the water outlet chamber 3. When the fluid is quickly disconnected, the opening and closing column 5 is quickly dropped by the elastic force of the reset spring 6 and fits with the silicone gasket 4. At the same time, the opening and closing column 5 is separated from the valve body 1 by the silicone gasket 4 and absorbs the impact force during contact. When in use, the valve body 1 is connected to the external pipeline, and the water inlet chamber 2 is connected to the water inlet pipeline, and the water outlet chamber 3 is connected to the water outlet pipeline. When water in the water inlet pipe enters the valve body 1, it enters the water inlet chamber 2, and the closing block 52 at the bottom of the opening and closing column 5 is pushed up by the water flow pressure, so that it generates an upward pressure and squeezes the return spring 6, thereby causing the entire opening and closing column 5 to move upward along the valve body 1, thereby causing a gap to be generated between the closing block 52 and the inner wall of the valve body 1 so that the liquid can flow through, thereby automatically opening the valve. After the liquid in the water inlet pipe is cut off, the closing block 52 is pressed down again by the elastic force generated by the return spring 6, so that the closing block 52 is re-fitted into the valve body 1, thereby closing the valve. The valve body 1 is automatically closed. When the closing block 52 falls down to close, the impact force generated at the moment of contacting the valve body 1 is absorbed by the gasket 4. At the same time, the additional impact force is transmitted to the elastic shock-absorbing column 53 between the bottom end of the sliding column 51 and the top of the closing block 52, thereby fully absorbing the impact force applied between the closing block 52 and the valve body 1, thereby greatly reducing the impact force applied between the closing block 52 and the valve body 1. In this way, the contact part between the closing block 52 and the valve body 1 will not be quickly worn due to the impact, thereby ensuring the sealing performance and extending the service life of the valve;

[0020] The top surface of the closing block 52 is also provided with a lower pressure plate 54, which is conducive to the counter-flowing liquid to generate a strong downward pressure, thereby accelerating the falling speed of the closing block 52, so that it can close the valve faster;

[0021] The bottom surface of the closed block 52 is also provided with an upper top plate 55, and the bottom surface of the upper top plate 55 is provided with a plurality of arc-shaped grooves. In this embodiment, two arc-shaped grooves are provided, which is conducive to increasing the upward thrust of the entering liquid, thereby enabling the closed block 52 to be lifted and opened more quickly.

[0022] A silicone extrusion plate 56 is slidingly provided on the side wall of the closed block 52, and a buffer support block 57 is provided between the silicone extrusion plate 56 and the closed block 52. The buffer support block 57 includes an elastic ring 571 provided between the silicone extrusion plate 56 and the closed block 52 and an elastic support frame 572 provided on the inner wall of the elastic ring 571. After the closed block 52 falls and contacts the valve body 1, the extrusion plate 56 is used to further absorb the impact, and the impact is transmitted to the elastic ring 571 of the buffer support block 57 and deformed and the elastic support frame 572 is squeezed at the same time, so that the elastic support frame 572 is synchronously deformed, and the impact force is converted into a deformation elastic force, thereby absorbing the impact force and slowly releasing it through the elastic force, thereby ensuring the sealing while further enhancing the resistance to the impact force, further reducing the wear and prolonging the service life;

[0023] The inner wall of the elastic ring 571 is provided with a plurality of arc-shaped deformation grooves 575. In this embodiment, twelve arc-shaped deformation grooves 575 are provided, which is conducive to enabling the elastic ring 571 to deform more quickly to absorb impact.

[0024] The elastic support frame 572 is a curved plate structure with two vertically distributed along the center line of the elastic ring 571. A first magnet 573 is provided on one side of the inner wall of the elastic support frame 572, and a second magnet 574 is provided on the other side of the inner wall of the elastic support frame 572. The first magnet 573 and the second magnet 574 have the same magnetic poles. When the support frame 572 is deformed too quickly, the repulsive effect between the first magnet 573 and the second magnet 574 is used to slow down its rapid deformation speed, provide additional support, and avoid excessively rapid collapse and damage that cannot be restored.

[0025] Working principle of the utility model: When the utility model is used, the valve body 1 is connected to the external pipeline, and the water inlet chamber 2 is connected to the water inlet pipeline, and the water outlet chamber 3 is connected to the water outlet pipeline. When the water in the water inlet pipeline enters the valve body 1, it enters the water inlet chamber 2, and the closing block 52 at the bottom of the opening and closing column 5 is pushed up by the water flow pressure, so that it generates an upward pressure and squeezes the reset spring 6, thereby making the entire opening and closing column 5 move upward along the valve body 1, and then a gap is generated between the closing block 52 and the inner wall of the valve body 1 so that the liquid can flow through, thereby automatically opening the valve. After the liquid in the water inlet pipeline is cut off, the closing block is pushed up by the elastic force generated by the reset spring 6. The body 52 is pressed down again, so that the closing block 52 fits into the valve body 1 again, and then the valve body 1 is automatically closed. In the process of the closing block 52 falling down to close, the impact force generated at the moment of contacting the valve body 1 is absorbed by the gasket 4, and the additional impact force is transmitted to the elastic shock-absorbing column 53 between the bottom end of the sliding column 51 and the top of the closing block 52, and then the generated impact is fully absorbed, so that the impact force applied between the closing block 52 and the valve body 1 is greatly reduced, so that the contact part between the closing block 52 and the valve body 1 will not be quickly worn due to the impact, thereby ensuring the sealing and extending the service life of the valve.

[0026] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above functions of the utility model can be used as a choice. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of various components.

[0027] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A slow-closing check valve with a long service life, comprising a valve body (1) and a water inlet chamber (2) arranged in the valve body (1), the valve body (1) further comprising a water outlet chamber (3) connected to the water inlet chamber (2), the valve body (1) further comprising an opening and closing column (5) slidably arranged at a connection position between the water inlet chamber (2) and the water outlet chamber (3), a return spring (6) being arranged between the top of the opening and closing column (5) and the inner wall of the valve body (1), characterized in that: The inner wall of the valve body (1) is provided with a silicone gasket (4) at the connection position between the water inlet chamber (2) and the water outlet chamber (3). When the fluid is quickly disconnected, the opening and closing column (5) is caused to fall rapidly due to the elastic force of the return spring (6) and to fit with the silicone gasket (4). At the same time, the opening and closing column (5) is separated from the valve body (1) by the silicone gasket (4) and the impact force during contact is absorbed.

2. A slow-closing check valve with a long service life according to claim 1, characterized in that: The opening and closing column (5) comprises a sliding column (51) slidably arranged on the inner wall of the valve body (1) and a closing block (52) slidably arranged on the bottom end of the sliding column (51), and a plurality of shock-absorbing elastic columns (53) are arranged between the top of the closing block (52) and the bottom end of the sliding column (51).

3. A slow-closing check valve with a long service life according to claim 2, characterized in that: A lower pressing plate (54) is also provided on the top surface of the closed block (52).

4. A slow-closing check valve with a long service life according to claim 2, characterized in that: The bottom surface of the closed block (52) is also provided with an upper top plate (55), and the bottom surface of the upper top plate (55) is provided with a plurality of arc-shaped grooves.

5. A slow-closing check valve with a long service life according to claim 2, characterized in that: A silicone extrusion plate (56) is slidably provided on the side wall of the closed block (52), and a buffer support block (57) is provided between the silicone extrusion plate (56) and the closed block (52).

6. A slow-closing check valve with a long service life according to claim 5, characterized in that: The buffer support block (57) comprises an elastic ring (571) arranged between the silicone extrusion plate (56) and the closed block body (52), and an elastic support frame (572) arranged on the inner wall of the elastic ring (571).

7. A slow-closing check valve with a long service life according to claim 6, characterized in that: The inner wall of the elastic ring (571) is provided with a plurality of arc-shaped deformation grooves (575).

8. A slow-closing check valve with a long service life according to claim 6, characterized in that: The elastic support frame (572) is a structure of two arc-shaped plates vertically distributed along the center line of the elastic ring (571); a first magnet (573) is provided on one side of the inner wall of the elastic support frame (572); a second magnet (574) is provided on the other side of the inner wall of the elastic support frame (572); and the first magnet (573) and the second magnet (574) have the same magnetic pole.

Images