A water hammer resistant vertical check valve

Abstract

The utility model relates to the technical field of check valve, concretely to a vertical check valve of water hammer impact resistance, mainly including valve body, still include: the plugging mechanism, plugging mechanism sets up in the valve body inner wall, limiting mechanism, limiting mechanism sets up in the valve cap inside. Through the fixed sleeve, the sliding slot, the limiting post, the limiting block and the limiting groove that set up, the limiting post carries out the location to the fixed sleeve, makes the fixed sleeve move more stable, is not easy to deviate, the further location to the fixed sleeve is set up to the sliding slot and the limiting block, the fixed sleeve is connected with the connecting rod and the water plate, thereby further limiting the water plate, makes the water plate not easy to appear the deviation and the shaking when long time use, guarantees the plugging of check valve and not easy to appear the gap, improves the quality and the sealing property of check valve, the roller and the limiting groove rolling connection that set up, make the fixed sleeve move more smoothly, make the water plate not easy to appear the jam difficult to open and close situation, improve the security of device.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a vertical check valve resistant to water hammer impact. Background Technology

[0002] A check valve is an automatic valve that automatically opens and closes based on the flow of the medium itself. It is mainly installed on pipelines where the medium flows in one direction only, allowing the medium to flow in only one direction to prevent accidents. It can also be used in pipelines supplying auxiliary systems where the pressure may rise above the system pressure. Vertical check valves resistant to water hammer can buffer the impact force of water flow, reduce the impact of water hammer on the valve, and improve the service life of the check valve.

[0003] Most existing vertical check valves resistant to water hammer impact have their valve discs directly connected to the connecting rod, with one end of the connecting rod slidingly connected to the inner wall of the valve cap. The valve cap limits the movement of the connecting rod. However, during use, when the valve disc and the connecting rod move, because the limiting mechanism is only linear, the connecting rod and the valve disc are prone to rotation. Furthermore, the limiting mechanism is only effective through the valve cap, which is inadequate. Over time, this can cause the connecting rod and the valve disc to wobble, resulting in gaps in the valve disc's seal on the check valve and affecting the check valve's water-stopping quality. Utility Model Content

[0004] The purpose of this invention is to provide a vertical check valve resistant to water hammer impact, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A vertical check valve resistant to water hammer impact includes: a valve body, a raised ring integrally installed on the inner wall of the valve body, and a groove formed in the inner wall of the valve body; and further includes:

[0007] The sealing mechanism is located on the inner wall of the valve body. The sealing mechanism includes a filter screen that is fixedly installed on the inner wall of the tank. The valve body is equipped with a pressure plate and a connecting rod. A valve cap is installed at one end of the valve body. The sealing mechanism is used to seal the valve body.

[0008] The limiting mechanism is located inside the valve cap. The limiting mechanism includes a fixed sleeve located inside the valve cap, and multiple rollers are provided on the outside of the fixed sleeve. The limiting mechanism is used to limit the connecting rod.

[0009] Preferably, one end of the connecting rod is fixedly inserted through the side of the pressure plate and extends to the other side of the pressure plate, and a gasket 1 and a gasket 2 are movably installed on the outer wall of one end of the connecting rod.

[0010] Preferably, a copper washer is installed on the outer wall of the connecting rod, and a screw is threaded onto one end of the connecting rod to fix the copper washer and the gasket.

[0011] Preferably, the bottom surface of the second gasket abuts against the side of the convex ring, the other end of the connecting rod extends into the inside of the valve cap, and a spring is slidably installed on the outer wall of the connecting rod, with the two ends of the spring being fixedly connected to the side of the pressure plate and the inner wall of one side of the valve cap, respectively.

[0012] Preferably, the inner wall of the valve cap is provided with a sliding groove, the inner wall of the sliding groove is slidably connected to the outer wall of the fixed sleeve, and the inner wall of the fixed sleeve is fixedly connected to the outer wall of one end of the connecting rod.

[0013] Preferably, three limiting posts are slidably installed on the top surface of the fixed sleeve, and the two ends of the three limiting posts are fixedly connected to the inner walls of the two ends of the slide groove.

[0014] Preferably, the inner wall of the chute has three limiting grooves, and the outer wall of the fixing sleeve has three limiting blocks fixedly installed. The sides of the three limiting blocks are slidably connected to the inner walls on both sides of the three limiting grooves.

[0015] Preferably, the three limiting blocks are provided with mounting grooves on their sides, and the inner walls of the three mounting grooves are rotatably mounted with rotating shafts through bearing seats. The outer walls of the multiple rotating shafts are fixedly connected to the inner walls of multiple rollers, and the outer walls of the multiple rollers are rolledly connected to the inner walls of one side of the three limiting grooves.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model features a fixed sleeve, a sliding groove, a limiting post, a limiting block, and a limiting slot. The limiting post limits the movement of the fixed sleeve, making its movement more stable and less prone to deviation. The sliding groove and limiting block further limit the movement of the fixed sleeve. The fixed sleeve connects to the connecting rod and the pressure plate, further limiting the pressure plate and preventing it from shifting or shaking during prolonged use. This ensures a tight seal on the check valve, improving its quality and sealing performance. The rollers, connected to the limiting slot, ensure smooth movement of the fixed sleeve, preventing the pressure plate from jamming and becoming difficult to open or close, thus enhancing the device's safety.

[0018] The screws secure gaskets one and two, along with the copper washer, to the valve body. The spring applies elastic force to the pressure plate, allowing it to push to one side and seal the valve body, ensuring backflow of water at one end. The filter screen filters the water while contacting the pressure plate, providing buffering at the pressure plate and improving the quality of the subsequent water while preventing damage to the pressure plate. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is an exploded three-dimensional view of the spring section of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the valve body of this utility model.

[0022] Figure 4 This is a schematic cross-sectional view of the valve cap structure of this utility model;

[0023] Figure 5 This is an exploded three-dimensional view of the roller structure of this utility model.

[0024] In the picture:

[0025] 1. Valve body; 101. Convex ring; 102. Groove body;

[0026] 2. Sealing mechanism; 201. Filter screen; 202. Gasket 1; 203. Gasket 2; 204. Pressure plate; 205. Connecting rod; 206. Copper washer; 207. Screw; 208. Valve cap; 209. Spring;

[0027] 3. Limiting mechanism; 301. Fixing sleeve; 302. Slide groove; 303. Limiting post; 304. Limiting groove; 305. Limiting block; 306. Mounting groove; 307. Rotating shaft; 308. Roller. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] like Figures 1-5 As shown, this application provides a vertical check valve resistant to water hammer impact, including: a valve body 1, a raised ring 101 integrally installed on the inner wall of the valve body 1, and a groove 102 formed in the inner wall of the valve body 1, and further including:

[0031] The sealing mechanism 2 is installed on the inner wall of the valve body 1. The sealing mechanism 2 includes a filter screen 201 fixedly installed on the inner wall of the tank 102. The valve body 1 is equipped with a water pressure plate 204 and a connecting rod 205. A valve cap 208 is installed at one end of the valve body 1. The sealing mechanism 2 is used to seal the valve body 1.

[0032] Specifically, such as Figures 1-5As shown, one end of the connecting rod 205 is fixedly inserted through the side of the pressure plate 204 and extends to the other side of the pressure plate 204. A gasket 1 202 and a gasket 203 are movably installed on the outer wall of one end of the connecting rod 205.

[0033] In this embodiment: through the connecting rod 205 and the pressure plate 204, the pressure plate 204 drives the first gasket 202 and the second gasket 203 to move, thereby abutting and sealing the convex ring 101, and the filter screen 201 filters impurities from the water flow.

[0034] Specifically, such as Figures 1-5 As shown, a copper washer 206 is installed on the outer wall of the connecting rod 205, and a screw 207 is threaded onto one end of the connecting rod 205. The screw 207 fixes the copper washer 206 and the washer 203.

[0035] In this embodiment, the copper washer 206 and the second washer 203 are fixed to the connecting rod 205 by the screw 207, which makes it less likely for them to shift or fall off.

[0036] Specifically, such as Figures 1-5 As shown, the bottom surface of gasket 203 abuts against the side of convex ring 101, and the other end of connecting rod 205 extends into the inside of valve cap 208. A spring 209 is slidably installed on the outer wall of connecting rod 205, and the two ends of spring 209 are fixedly connected to the side of pressure plate 204 and the inner wall of one side of valve cap 208, respectively.

[0037] In this embodiment, the spring 209 applies elastic force to the pressure plate 204, thereby preventing water backflow.

[0038] The limiting mechanism 3 is located inside the valve cap 208. The limiting mechanism 3 includes a fixed sleeve 301 located inside the valve cap 208. Multiple rollers 308 are provided on the outside of the fixed sleeve 301. The limiting mechanism 3 is used to limit the connecting rod 205.

[0039] Specifically, such as Figures 1-5 As shown, the inner wall of the valve cap 208 is provided with a sliding groove 302, the inner wall of the sliding groove 302 is slidably connected to the outer wall of the fixed sleeve 301, and the inner wall of the fixed sleeve 301 is fixedly connected to the outer wall of one end of the connecting rod 205.

[0040] In this embodiment: the fixed sleeve 301 is limited by the sliding groove 302, and the connecting rod 205 and the water pressure plate 204 are further limited.

[0041] Specifically, such as Figures 1-5 As shown, three limiting posts 303 are slidably installed on the top surface of the fixed sleeve 301, and the two ends of the three limiting posts 303 are fixedly connected to the inner walls of the two ends of the slide groove 302.

[0042] In this embodiment, the fixed sleeve 301 is further limited by the limiting post 303, so that the fixed sleeve 301 moves more stably.

[0043] Specifically, such as Figures 1-5 As shown, the inner wall of the slide groove 302 is provided with three limiting grooves 304, and the outer wall of the fixing sleeve 301 is fixedly installed with three limiting blocks 305. The sides of the three limiting blocks 305 are slidably connected to the inner walls on both sides of the three limiting grooves 304 respectively.

[0044] In this embodiment: the three limiting blocks 305 are slidably connected to the inner walls of the two sides of the three limiting grooves 304 respectively, the limiting grooves 304 limit the limiting blocks 305, and further limit the fixing sleeve 301 and the connecting rod 205.

[0045] Specifically, such as Figures 1-5 As shown, the three limiting blocks 305 have mounting grooves 306 on their sides respectively. The inner walls of the three mounting grooves 306 are rotatably mounted with rotating shafts 307 through bearing seats. The outer walls of the multiple rotating shafts 307 are fixedly connected to the inner walls of multiple rollers 308 respectively. The outer walls of the multiple rollers 308 are tumblingly connected to the inner walls of one side of the three limiting grooves 304 respectively.

[0046] In this embodiment: with the roller 308, when the fixed sleeve 301, connecting rod 205 and pressure plate 204 move, the fixed sleeve 301 moves more smoothly and the pressure plate 204 can close quickly.

[0047] Specifically, this solution involves the following: During the use of valve body 1, the fixed sleeve 301, slide groove 302, limiting post 303, limiting block 305, and limiting groove 304 are configured. The limiting post 303 limits the fixed sleeve 301, making its movement more stable and less prone to deviation. Simultaneously, the slide groove 302 and limiting block 305 further limit the fixed sleeve 301. The fixed sleeve 301 is connected to the connecting rod 205 and the pressure plate 204, further limiting the pressure plate 204. This prevents the pressure plate 204 from shifting or shaking during prolonged use, ensuring a tight seal on the check valve and improving its quality and sealing performance. The included rollers... The 308 and the limiting groove 304 are rolled together, making the movement of the fixed sleeve 301 smoother and preventing the pressure plate 204 from getting stuck and difficult to open and close, thus improving the safety of the device. The screws 207 fix the gasket 202, gasket 203 and copper washer 206. The spring 209 applies elastic force to the pressure plate 204, allowing the pressure plate 204 to apply a pushing force to one side to block the valve body 1 and ensure that the water flow at one end is backflowed. The filter screen 201 filters the water and contacts the pressure plate 204 to ensure buffering at the pressure plate 204, improving the quality of the subsequent water while ensuring that the pressure plate 204 is not easily damaged.

[0048] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0049] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, 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 vertical check valve resistant to water hammer impact, comprising: A valve body (1), wherein a convex ring (101) is integrally installed on the inner wall of the valve body (1), and a groove (102) is formed on the inner wall of the valve body (1), characterized in that it further includes: A blocking mechanism (2) is provided on the inner wall of the valve body (1). The blocking mechanism (2) includes a filter screen (201) fixedly installed on the inner wall of the tank (102). A pressure plate (204) and a connecting rod (205) are provided inside the valve body (1). A valve cap (208) is installed at one end of the valve body (1). The blocking mechanism (2) is used to block the valve body (1). The limiting mechanism (3) is located inside the valve cap (208). The limiting mechanism (3) includes a fixed sleeve (301) located inside the valve cap (208). Multiple rollers (308) are provided on the outside of the fixed sleeve (301). The limiting mechanism (3) is used to limit the connecting rod (205).

2. A vertical check valve resistant to water hammer impact according to claim 1, characterized in that, One end of the connecting rod (205) is fixedly inserted through the side of the pressure plate (204) and extends to the other side of the pressure plate (204). A gasket 1 (202) and a gasket 2 (203) are movably installed on the outer wall of one end of the connecting rod (205).

3. A vertical check valve resistant to water hammer impact according to claim 2, characterized in that, A copper washer (206) is installed on the outer wall of the connecting rod (205), and a screw (207) is threaded onto one end of the connecting rod (205). The screw (207) fixes the copper washer (206) and the second washer (203).

4. A vertical check valve resistant to water hammer impact according to claim 3, characterized in that, The bottom surface of the second gasket (203) abuts against the side of the convex ring (101), and the other end of the connecting rod (205) extends into the inside of the valve cap (208). A spring (209) is slidably installed on the outer wall of the connecting rod (205), and the two ends of the spring (209) are fixedly connected to the side of the pressure plate (204) and the inner wall of one side of the valve cap (208), respectively.

5. A vertical check valve resistant to water hammer impact according to claim 1, characterized in that, The valve cap (208) has a sliding groove (302) on its inner wall. The inner wall of the sliding groove (302) is slidably connected to the outer wall of the fixed sleeve (301). The inner wall of the fixed sleeve (301) is fixedly connected to the outer wall of one end of the connecting rod (205).

6. A vertical check valve resistant to water hammer impact according to claim 5, characterized in that, The top surface of the fixed sleeve (301) is slidably connected with three limiting posts (303), and the two ends of the three limiting posts (303) are fixedly connected to the inner walls of the two ends of the slide groove (302).

7. A vertical check valve resistant to water hammer impact according to claim 6, characterized in that, The inner wall of the slide groove (302) is provided with three limiting grooves (304), and the outer wall of the fixed sleeve (301) is fixedly installed with three limiting blocks (305). The sides of the three limiting blocks (305) are slidably connected to the inner walls on both sides of the three limiting grooves (304).

8. A vertical check valve resistant to water hammer impact according to claim 7, characterized in that, The three limiting blocks (305) are respectively provided with mounting grooves (306) on their sides. The inner walls of the three mounting grooves (306) are respectively rotatably mounted with rotating shafts (307) through bearing seats. The outer walls of the multiple rotating shafts (307) are respectively fixedly connected to the inner walls of multiple rollers (308). The outer walls of the multiple rollers (308) are respectively tumbledly connected to the inner walls of one side of the three limiting grooves (304).

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