Buffering check valve

Abstract

The utility model relates to the technical field of check valves, and discloses a buffer check valve which comprises a valve body and a water stop assembly, the water stop assembly is arranged in the valve body and used for preventing water from flowing back, the outer side of the valve body is fixedly connected with a fixing block, the top of the fixing block is fixedly connected with a fixing column, and the fixing column is fixedly connected with the valve body. A sliding block is slidably connected to the outer portion of the fixing column, and a quick disassembly assembly is arranged on the outer side of the valve body and used for quick disassembly and assembly of the valve body. The quick release assembly comprises a spring, and the spring is arranged outside the fixing column in a sleeving mode. According to the sealing cover, the sliding block is pulled downwards to be separated from the inner side of the limiting groove, then the rotating ring is rotated to enable the limiting groove and the limiting block to be located at the same vertical line position, in this way, limitation of the rotating ring to the limiting block is relieved, the sealing cover and the limiting block can be taken down together, and the disassembling mode is convenient and fast; and a large amount of manual labor can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a buffer check valve. Background Art

[0002] A check valve is an automatic valve primarily used to prevent fluid backflow in a pipeline. It typically consists of a valve body and a disc. The body is the main part of the check valve, connecting to the pipeline and providing a channel for the fluid to flow. The disc is a key component of the check valve, automatically opening and closing according to the direction of the fluid flow. When the fluid flows in the forward direction, the disc opens under the force of the fluid, allowing the fluid to pass through. When the fluid flows in the reverse direction, the disc closes under the pressure of the fluid and its own gravity, preventing the fluid from flowing back.

[0003] In the prior art, many buffer check valves use bolts to tighten the outer cover of the valve to achieve sealing and fixation. In actual use scenarios, this method has some obvious problems. For example, when the inside of the valve body needs to be cleaned or repaired, the bolt tightening method is very cumbersome to operate, and specific tools need to be used to remove the bolts one by one, which consumes a lot of time and labor. Moreover, after multiple disassembly and installation, the bolts are prone to problems such as thread wear, resulting in a decrease in the tightening effect and even leakage. In addition, the outer cover tightened by bolts will loosen due to vibration and other reasons during long-term use, affecting the sealing performance of the valve. Therefore, the technology in this field proposes a buffer check valve to solve the above problems. Utility Model Content

[0004] In order to remedy the above deficiencies, the present invention provides a buffer check valve, which aims to improve the problem that the outer cover of the check valve in the prior art needs to be disassembled with the assistance of other tools and the removal of multiple bolts is a cumbersome operation.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a buffer check valve, comprising a valve body and a water-stop assembly, wherein the water-stop assembly is arranged inside the valve body and is used to prevent water from flowing back; a fixed block is fixedly connected to the outside of the valve body, a fixed column is fixedly connected to the top of the fixed block, a slider is slidably connected to the outside of the fixed column, and a quick-release assembly is arranged on the outside of the valve body, and the quick-release assembly is used for quickly disassembling and assembling the valve body;

[0006] The quick-release assembly includes a spring, which is sleeved on the outside of the fixed column. The outer side of the valve body is rotatably connected to a rotating ring, the inner side of the rotating ring is provided with a limiting groove, the outer side of the valve body is provided with a sliding groove, the top of the valve body is provided with a sealing cover, the bottom of the valve body is fixedly connected to a limiting block, the top of the valve body and the bottom of the sealing cover are both provided with sealing grooves, and sealing rings are provided inside the two sealing grooves.

[0007] Furthermore, the water-stop assembly includes a check hole, which is opened inside the valve body. The inner side of the check hole is rotatably connected to a sealing disk 1, and the bottom of the sealing disk 1 is fixedly connected to a water-stop diaphragm.

[0008] Furthermore, a through opening is provided at the bottom of the check hole, and the outer side of the water-stopping membrane is in contact with the inner wall of the through opening.

[0009] Furthermore, the top of the sealing disk 1 is rotatably connected to a connecting rod, and one end of the connecting rod is rotatably connected to the sealing disk 2.

[0010] Furthermore, the outer side of the second sealing disk is rotatably connected to the inner wall of the valve body, and the inner wall of the valve body is provided with a drain port.

[0011] Furthermore, a drain pipe is fixedly connected to the outside of the drain outlet, and the drain pipe is located on the side of the valve body.

[0012] Furthermore, one end of the spring is fixedly connected to the top of the fixing column, and the other end of the spring is fixedly connected to the bottom of the slider.

[0013] Furthermore, the outer portion of the slider is engaged with the inner side of the limiting groove, the outer side of the limiting block is in contact with the inner side of the rotating ring, and the outer side of the limiting block is slidably connected with the inner side of the sliding groove.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present invention, by pulling the slider downward to separate it from the inner side of the limit groove, and then rotating the rotating ring so that the limit groove and the limit block are in the same vertical line, the restriction of the rotating ring on the limit block is released, and the sealing cover can be removed together with the limit block. This disassembly method is relatively convenient and can save a lot of labor. In addition, the sealing ring cooperates with the two sealing grooves to achieve a good sealing effect.

[0016] 2. In the utility model, when draining, water will be transported from the drain pipe and pass through the drain port into the interior of the valve body, and then flow away from the position of the check hole. When water backflow occurs, the water will lift the water-stop diaphragm, and the sealing disc 1 will play a buffering role and seal the check hole. The water-stop diaphragm will have a sealing effect, and the connecting rod will drive the sealing disc 2 to rotate to seal the drain port. This provides double insurance and can avoid the phenomenon of water backflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of a buffer check valve proposed by the utility model;

[0018] Figure 2This is a schematic structural diagram of a sealing cover of a buffer check valve proposed in the present invention;

[0019] Figure 3 The present invention provides a structural diagram of a sealing disc of a buffer check valve.

[0020] Legend:

[0021] 1. Valve body; 2. Fixed block; 3. Fixed column; 4. Slider; 5. Spring; 6. Rotating ring; 7. Limit groove; 8. Slide groove; 9. Sealing cover; 10. Limit block; 11. Sealing groove; 12. Sealing ring; 13. Check hole; 14. Through port; 15. Sealing disk 1; 16. Connecting rod; 17. Sealing disk 2; 18. Drain port; 19. Drain pipe; 20. Water-stop diaphragm. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Reference Figure 1-Figure 3, the utility model provides an embodiment: a buffer check valve, including a valve body 1 as the main body of the entire check valve, a fixed block 2 is fixedly connected to the outside of the fixed block 2, a fixed column 3 is fixedly connected to the top of the fixed block 2, a slider 4 is slidably connected to the outside of the fixed column 3, a spring 5 is sleeved on the outside of the fixed column 3, a rotating ring 6 is rotatably connected to the outside of the valve body 1, a limiting groove 7 is provided on the inner side of the rotating ring 6, a sliding groove 8 is provided on the outside of the valve body 1, a sealing cover 9 is provided on the top of the valve body 1, a limiting block 10 is fixedly connected to the bottom of the valve body 1, a sealing groove 11 is provided on the top of the valve body 1 and the bottom of the sealing cover 9, a sealing ring 12 is provided inside the two sealing grooves 11, one end of the spring 5 is fixedly connected to the top of the fixed column 3, the other end of the spring 5 is fixedly connected to the bottom of the slider 4, the outside of the slider 4 It is engaged with the inner side of the limit groove 7, the outer side of the limit block 10 is fitted with the inner side of the rotating ring 6, and the outer side of the limit block 10 is slidably connected with the inner side of the slide groove 8. The quick-release assembly is used for quick disassembly and assembly of the valve body 1. When the interior of the valve body 1 needs to be cleaned, the slider 4 can be pulled down. At this time, the spring 5 is compressed. After the slider 4 is separated from the inner side of the limit groove 7, the rotating ring 6 is rotated so that the limit groove 7 and the limit block 10 are in the same vertical position. In this way, the restriction of the rotating ring 6 on the limit block 10 is released, and the sealing cover 9 can be removed together with the limit block 10. This disassembly method is relatively convenient and can save a lot of labor. The sealing ring 12 cooperates with the two sealing grooves 11 to achieve a good sealing effect, ensuring that there will be no leakage inside the valve body 1 during normal use.

[0024] Specifically, when it is necessary to clean the interior of the valve body 1, the slider 4 can be pulled downward to separate it from the inner side of the limit groove 7. Then, the rotating ring 6 is rotated so that the limit groove 7 and the limit block 10 are in the same vertical line. In this way, the restriction of the rotating ring 6 on the limit block 10 is released. At this time, the sealing cover 9 can be easily removed together with the limit block 10. This disassembly method is very convenient and can greatly save a lot of manual labor. In addition, the sealing ring 12 cooperates with the two sealing grooves 11 to achieve a very good sealing effect, ensuring that there will be no leakage inside the valve body 1 during normal use.

[0025] Reference Figure 1-Figure 3The water-stop assembly is arranged inside the valve body 1. The water-stop assembly includes a check hole 13. The check hole 13 is opened inside the valve body 1. The inner side of the check hole 13 is rotatably connected to a sealing disk 15. The bottom of the sealing disk 15 is fixedly connected to a water-stop diaphragm 20. A through-port 14 is opened at the bottom of the check hole 13. The outer side of the water-stop diaphragm 20 is fitted with the inner wall of the through-port 14. The top of the sealing disk 15 is rotatably connected to a connecting rod 16. One end of the connecting rod 16 is rotatably connected to a sealing disk 2 17. The outer side of the sealing disk 2 17 is rotatably connected to the inner wall of the valve body 1. The inner wall of the valve body 1 is provided with a drain port 1 8. The drain pipe 19 is located on the side of the valve body 1. When draining, water will be transported from the drain pipe 19 and pass through the drain port 18 into the interior of the valve body 1, and then flow away from the position of the check hole 13. When water backflow occurs, the water will lift up the water-stop diaphragm 20, and the sealing disk 15 will play a buffering role and seal the check hole 13. The water-stop diaphragm 20 will have a sealing effect, and the connecting rod 16 will drive the sealing disk 2 17 to rotate to seal the drain port 18. This provides double insurance, which can effectively avoid the phenomenon of water backflow and ensure the reliability and stability of the check valve.

[0026] Specifically, during the drainage process, water will be transported from the drain pipe 19 and pass through the drain port 18 into the interior of the valve body 1, and then flow away from the position of the check hole 13. When water backflow occurs, the water flow will lift up the water-stop diaphragm 20. At this time, the sealing disk 15 will play a buffering role and seal the check hole 13, and the water-stop diaphragm 20 will play a sealing role. At the same time, the connecting rod 16 will drive the sealing disk 2 17 to rotate and seal the drain port 18. Through such a double insurance mechanism, the phenomenon of water backflow can be effectively avoided, ensuring the reliability and stability of the check valve during use.

[0027] Working principle: When it is necessary to clean the inside of the valve body 1, the slider 4 can be pulled down to separate it from the inner side of the limit groove 7, and then the rotating ring 6 can be rotated so that the limit groove 7 and the limit block 10 are in the same vertical position. In this way, the restriction of the rotating ring 6 on the limit block 10 is released, and the sealing cover 9 can be removed together with the limit block 10. This disassembly method is relatively convenient and can save a lot of labor, and the sealing ring 12 cooperates with the two sealing grooves 11 to achieve a good sealing effect.

[0028] In addition, when draining, water will be transported from the drain pipe 19 and pass through the drain port 18 into the interior of the valve body 1, and then flow away from the position of the check hole 13. When water backflow occurs, the water will lift the water-stop diaphragm 20, and the sealing disk 15 will play a buffering role and seal the check hole 13. The water-stop diaphragm 20 will have a sealing effect, and the connecting rod 16 will drive the sealing disk 2 17 to rotate to seal the drain port 18. This provides double insurance and can prevent water backflow.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A buffer check valve, comprising a valve body (1) and a water-stop assembly, characterized in that: The water-stop assembly is arranged inside the valve body (1), and is used to prevent water from flowing back. The outer side of the valve body (1) is fixedly connected to a fixed block (2), the top of the fixed block (2) is fixedly connected to a fixed column (3), and the outer side of the fixed column (3) is slidably connected to a slider (4). A quick-release assembly is arranged on the outer side of the valve body (1), and the quick-release assembly is used for quickly disassembling and assembling the valve body (1); The quick-release assembly includes a spring (5), which is sleeved on the outside of the fixed column (3); the outer side of the valve body (1) is rotatably connected to a rotating ring (6); the inner side of the rotating ring (6) is provided with a limiting groove (7); the outer side of the valve body (1) is provided with a sliding groove (8); the top of the valve body (1) is provided with a sealing cover (9); the bottom of the valve body (1) is fixedly connected to a limiting block (10); the top of the valve body (1) and the bottom of the sealing cover (9) are both provided with sealing grooves (11); and the insides of the two sealing grooves (11) are provided with sealing rings (12).

2. A buffer check valve according to claim 1, characterized in that: The water-stop assembly comprises a check hole (13), wherein the check hole (13) is provided inside the valve body (1), a sealing disk (15) is rotatably connected to the inner side of the check hole (13), and a water-stop diaphragm (20) is fixedly connected to the bottom of the sealing disk (15).

3. A buffer check valve according to claim 2, characterized in that: A through opening (14) is provided at the bottom of the check hole (13), and the outer side of the water-stopping membrane (20) is in contact with the inner wall of the through opening (14).

4. A buffer check valve according to claim 3, characterized in that: The top of the sealing disk 1 (15) is rotatably connected to a connecting rod (16), and one end of the connecting rod (16) is rotatably connected to the sealing disk 2 (17).

5. A buffer check valve according to claim 4, characterized in that: The outer side of the second sealing disc (17) is rotatably connected to the inner wall of the valve body (1), and the inner wall of the valve body (1) is provided with a drain port (18).

6. A buffer check valve according to claim 5, characterized in that: The outside of the drain port (18) is fixedly connected to a drain pipe (19), and the drain pipe (19) is located on the side of the valve body (1).

7. The buffer check valve according to claim 1, characterized in that: One end of the spring (5) is fixedly connected to the top of the fixed column (3), and the other end of the spring (5) is fixedly connected to the bottom of the slider (4).

8. The buffer check valve according to claim 1, characterized in that: The outer portion of the slider (4) is engaged with the inner side of the limiting groove (7), the outer side of the limiting block (10) is in contact with the inner side of the rotating ring (6), and the outer side of the limiting block (10) is slidably connected with the inner side of the sliding groove (8).

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