Noise elimination check valve and sealing loss reduction structure

Abstract

The utility model provides a noise elimination check valve and a sealing loss reduction structure, and belongs to the technical field of noise elimination check valves. The noise elimination check valve and the sealing loss reduction structure comprise a valve clack, the front face of the valve clack is fixedly connected with a first limiting guide rod, the outer wall of the first limiting guide rod is movably sleeved with an installation limiting ring, and the back face of the valve clack is fixedly connected with a second limiting guide rod. The anti-leakage valve has the advantages that by arranging the eight sets of third supporting springs, the eight sets of third supporting springs can provide stable elastic support for the first embedding block to push the anti-leakage rubber ring, and when the first embedding block is pushed to slide in the second embedding block, the elastic effect of the springs ensures that the first embedding block can flexibly adapt to the inclination angle of the valve clack; the anti-leakage rubber ring can be tightly attached to the inclined valve clack, so that when the valve clack is located at the normal position, the sealing performance of the check valve is improved, the sealing reliability of the check valve is enhanced, backflow of fluid is effectively prevented, and stable operation and safety of a whole system are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of silencer check valve technology, and in particular to a silencer check valve and a sealing loss reduction structure. Background Technology

[0002] A silent check valve is a special type of check valve that is mainly used to prevent fluid backflow while effectively reducing noise and water hammer effect when closed. It is widely used in water supply and drainage systems, high-rise building pipe networks, fire protection systems, industrial pipelines and other fields, and is especially suitable for occasions with high noise control requirements.

[0003] During use, the spring of a regular check valve needs to provide elastic support to the valve disc for a long time to ensure that the valve disc can close quickly when the fluid stops flowing, preventing backflow of the medium. However, the spring is prone to elastic failure or insufficient elasticity during long-term use. When the elasticity of the spring weakens, it cannot provide enough closing force for the valve disc, making it impossible for the valve disc to fit tightly against the valve seat, thus causing leakage in the valve body.

[0004] Therefore, this utility model proposes a silent check valve and a sealing loss reduction structure. Utility Model Content

[0005] The purpose of this invention is to provide a silent check valve and a sealing loss reduction structure to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sealing and loss-reducing structure includes a valve disc. A limiting guide rod is fixedly connected to the front of the valve disc, and a mounting limiting ring is movably sleeved on the outer wall of the limiting guide rod. A second limiting guide rod is fixedly connected to the back of the valve disc, and a fixing limiting ring is movably sleeved on the outer wall of the second limiting guide rod. One end of a second support spring is attached to the back of the valve disc, and the other end of the second support spring is attached to the outer wall of the fixing limiting ring. The interior of the second support spring is movably sleeved with the second limiting guide rod.

[0008] A leak-proof device is attached to the front of the valve disc, the outer wall of the leak-proof device is fixedly connected to the valve body, and a limit structure is fixedly connected to the back of the valve disc.

[0009] Furthermore, the leak-proof device includes a leak-proof rubber ring, which is an inwardly inclined annular shape, and the inner wall of the leak-proof rubber ring is in contact with the surface of the valve disc. A fitting block 1 is fixedly connected to the front of the leak-proof rubber ring, and eight sets of support springs 3 are fixedly connected to the back of the fitting block 1. The eight sets of support springs 3 are arranged in a circumferential array. A fitting block 2 is fitted into the bottom end of the fitting block 1, and the front of the fitting block 2 is fixedly connected to the valve body.

[0010] Furthermore, the limiting structure includes limiting guide rods three, and four sets of limiting guide rods three are arranged in a circular array with limiting guide rod two as the center. The four sets of limiting guide rods three are aligned with the four extended ends of the fixed limiting ring. The outer walls of the four sets of limiting guide rods three are movably sleeved with the fixed limiting ring. Each of the four sets of limiting guide rods three has a support spring one movably sleeved on its outer wall. The front of the support spring one is in contact with the valve disc, and the other end of the support spring one is in contact with the front of the fixed limiting ring.

[0011] Furthermore, the valve disc is conical, and the front of the valve disc fits against the inner wall of the valve body.

[0012] This utility model also provides a silent check valve, including a valve body and a sealing and loss reduction structure as described above. The inside of the valve body is fixedly connected to a fixed limiting ring, and an installation limiting ring is threadedly connected to the inner wall of one end of the valve body.

[0013] Furthermore, eight sets of circular grooves are provided on one inner wall of the valve body, and each circular groove is movably fitted with a support spring.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. By setting eight sets of support springs, the eight sets of support springs can provide stable elastic support for the interlocking block one to push the anti-leakage rubber ring. When the interlocking block one slides inside the interlocking block two, the elasticity of the springs ensures that the interlocking block one can flexibly adapt to the tilt angle of the valve disc, so that the anti-leakage rubber ring can tightly fit the tilted valve disc. Thus, when the valve disc is in the normal position, the sealing performance of the check valve is improved, the sealing reliability of the check valve is enhanced, the backflow of fluid is effectively prevented, and the stable operation and safety of the entire system are ensured.

[0016] 2. By adding four sets of limit guide rods, the movement of the valve disc is limited and guided at four corners, preventing the valve disc from rotating inside the valve body, thereby preventing joint wear caused by rotation, further ensuring the stability of the valve disc during operation, preventing it from skewing, thus improving the sealing performance of the check valve and ensuring that it can maintain a good sealing effect under various working conditions. Attached Figure Description

[0017] Figure 1 This is a front view of the silencer check valve and the sealing loss reduction structure of this utility model;

[0018] Figure 2 This is a rear view of the silent check valve and the sealing loss reduction structure of this utility model;

[0019] Figure 3This is an internal structural diagram of a noise-reducing check valve and a sealing and loss-reducing structure according to the present invention.

[0020] Figure 4 This is a cross-sectional view of a noise-reducing check valve and a sealing and loss-reducing structure according to the present invention.

[0021] Figure 5 This is an enlarged view of part A of the silent check valve and the sealing loss reduction structure of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Valve body; 2. Mounting limit ring; 3. Limiting guide rod one; 4. Fixed limit ring; 5. Limiting guide rod two; 6. Limiting guide rod three; 7. Support spring one; 8. Support spring two; 9. Valve disc; 10. Support spring three; 11. Leak-proof rubber ring; 12. Fitting block one; 13. Fitting block two. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] Please see Figures 1 to 5 As shown, the sealing and loss reduction structure provided by this utility model includes a valve disc 9. A limiting guide rod 3 is fixedly connected to the front of the valve disc 9. A limiting ring 2 is movably sleeved on the outer wall of the limiting guide rod 3. A limiting guide rod 5 is fixedly connected to the back of the valve disc 9. A fixing limiting ring 4 is movably sleeved on the outer wall of the limiting guide rod 5. One end of a supporting spring 8 is attached to the back of the valve disc 9. The other end of the supporting spring 8 is attached to the outer wall of the fixing limiting ring 4. The inside of the supporting spring 8 is movably sleeved with the limiting guide rod 5.

[0027] A leak-proof device is attached to the front of the valve disc 9, and the outer wall of the leak-proof device is fixedly connected to the valve body 1. A limit structure is fixedly connected to the back of the valve disc 9.

[0028] The valve disc 9 is conical, and the front of the valve disc 9 is in contact with the inner wall of the valve body 1.

[0029] In use, when water flows into the valve body 1 from the end with the installation limit ring 2, the water flow pushes the valve disc 9 into the valve body 1. At this time, the limit guide rod 1 3 and the limit guide rod 2 5 slide within the installation limit ring 2 and the fixed limit ring 4 to limit the direction of movement of the valve disc 9. When the subsequent water flow stops, the elastic potential energy of the support spring 2 8 pushes the valve disc 9 to keep it in contact with the inner wall of the valve body 1. Limiting devices are set at both ends of the valve disc 9 to prevent the valve disc 9 from moving eccentrically inside the valve body 1 and to maintain the stable check valve effect.

[0030] The valve disc 9 is set in a conical shape. The conical valve disc can reduce the resistance when the fluid passes through, making the fluid flow more smoothly when passing through the valve disc, reducing the turbulence caused by the change of fluid flow direction, thereby reducing fluid resistance.

[0031] Example 2

[0032] Based on Example 1, please refer to Figures 1 to 5 As shown, the leak-proof device includes a leak-proof rubber ring 11, which is an inwardly inclined annular shape. The inner wall of the leak-proof rubber ring 11 is in contact with the surface of the valve disc 9. A fitting block 12 is fixedly connected to the front of the leak-proof rubber ring 11. Eight sets of support springs 3 10 are fixedly connected to the back of the fitting block 12. The eight sets of support springs 3 10 are arranged in a circumferential array. A fitting block 2 13 is fitted into the bottom end of the fitting block 12. The front of the fitting block 2 13 is fixedly connected to the valve body 1.

[0033] In use, when the rear support springs, such as support spring 7 and support spring 8, elastically decrease, a gap is created between valve disc 9 and the inner wall of valve body 1. At this time, under the influence of the elastic potential energy of support spring 3 10, the anti-leakage rubber ring 11 is pushed into the interior of valve body 1 by fitting block 1 12, so that the surface of the anti-leakage rubber ring 11 is in contact with valve disc 9, thereby keeping the silent check valve in a closed state, improving its sealing performance and reliability, effectively preventing fluid backflow, and ensuring the normal operation and safety of the system. Fitting block 2 13 limits the sliding position of fitting block 1 12, keeps the moving direction of fitting block 1 12 and anti-leakage rubber ring 11 fixed, and keeps the structure stable.

[0034] The limiting structure includes limiting guide rods 3 and 6. Four sets of limiting guide rods 3 and 6 are arranged in a circular array with limiting guide rod 2 and 5 as the center. The four sets of limiting guide rods 3 and 6 are aligned with the four extended ends of the fixed limiting ring 4. The outer walls of the four sets of limiting guide rods 3 and 6 are movably sleeved with the fixed limiting ring 4. Each set of limiting guide rods 3 and 6 has a support spring 1 and 7 movably sleeved on its outer wall. The front of the support spring 1 and 7 is in contact with the valve disc 9, and the other end of the support spring 1 and 7 is in contact with the front of the fixed limiting ring 4.

[0035] Four additional sets of limiting guide rods 6 are added to the back of valve disc 9 to limit and guide the movement of valve disc 9 at the four corners. When valve disc 9 moves into the valve body 1, it prevents the valve disc 9 from rotating inside the fixed limiting ring 4 due to the large impact force of water, which could cause wear at the connection between the fixed limiting ring 4 and the limiting guide rod 5, resulting in damage to the internal structure. This would cause the valve disc 9 to vibrate during subsequent use of the silencer check valve, affecting the user experience. At the same time, support spring 7 is set to increase the elastic pressure point and reduce the elastic pressure of support spring 8, maintaining the stability of the silencer check valve operation.

[0036] Example 3

[0037] Based on Examples 1 and 2, please refer to Figure 1 As shown, this utility model also provides a silent check valve, including a valve body 1 and a sealing and loss reduction structure as described above. The inside of the valve body 1 is fixedly connected to a fixed limiting ring 4, and an installation limiting ring 2 is threadedly connected to the inner wall of one end of the valve body 1.

[0038] Eight sets of circular grooves are provided on one side of the inner wall of the valve body 1, and each groove is movably fitted with a support spring 310.

[0039] By installing the limit ring 2 and threadedly connecting it to the valve body 1, it is convenient to inspect and replace the inside of the valve body 1.

[0040] Eight sets of circular grooves are set up so that the support springs 310 are evenly distributed inside the valve body 1, so that the anti-leakage rubber ring 11 keeps synchronously attached to the valve disc 9 when it comes into contact, and tightly attaches to the surface of the valve disc 9. When the valve disc 9 tilts, the reliability of the sealing state can still be maintained.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing and loss-reducing structure, characterized in that, Includes a valve disc (9), with a limiting guide rod 1 (3) fixedly connected to the front of the valve disc (9), and a mounting limiting ring (2) movably sleeved on the outer wall of the limiting guide rod 1 (3). A limiting guide rod 2 (5) is fixedly connected to the back of the valve disc (9), and a fixed limiting ring (4) movably sleeved on the outer wall of the limiting guide rod 2 (5). One end of a support spring 2 (8) is attached to the back of the valve disc (9), and the other end of the support spring 2 (8) is attached to the outer wall of the fixed limiting ring (4). The interior of the support spring 2 (8) is movably sleeved with the limiting guide rod 2 (5). The front of the valve disc (9) is fitted with a leak-proof device, the outer wall of the leak-proof device is fixedly connected to the valve body (1), and the back of the valve disc (9) is fixedly connected with a limit structure.

2. The sealing and loss-reducing structure according to claim 1, characterized in that, The leak-proof device includes a leak-proof rubber ring (11), which is an inwardly inclined ring and the inner wall of the leak-proof rubber ring (11) is in contact with the surface of the valve disc (9). A first fitting block (12) is fixedly connected to the front of the leak-proof rubber ring (11), and eight sets of support springs (10) are fixedly connected to the back of the first fitting block (12). The eight sets of support springs (10) are arranged in a circumferential array. A second fitting block (13) is fitted into the bottom of the first fitting block (12), and the front of the second fitting block (13) is fixedly connected to the valve body (1).

3. The sealing and loss-reducing structure according to claim 1, characterized in that, The limiting structure includes limiting guide rod three (6), and four sets of limiting guide rod three (6) are arranged in a circular array with limiting guide rod two (5) as the center. The four sets of limiting guide rod three (6) are aligned with the four extended ends of the fixed limiting ring (4). The outer wall of the four sets of limiting guide rod three (6) is movably sleeved with the fixed limiting ring (4). The outer wall of each of the four sets of limiting guide rod three (6) is movably sleeved with a support spring one (7). The front of the support spring one (7) is in contact with the valve disc (9), and the other end of the support spring one (7) is in contact with the front of the fixed limiting ring (4).

4. The sealing and loss-reducing structure according to claim 1, characterized in that, The valve disc (9) is conical, and the front of the valve disc (9) is in contact with the inner wall of the valve body (1).

5. A silent check valve, characterized in that, The valve body includes a valve body (1) and a sealing and loss reduction structure as described in any one of claims 1-4. The inside of the valve body (1) is fixedly connected to a fixed limiting ring (4), and an installation limiting ring (2) is threadedly connected to the inner wall of one end of the valve body (1).

6. A silencer check valve according to claim 5, characterized in that, The valve body (1) has eight sets of circular grooves on one side of its inner wall, and each of the circular grooves is movably fitted with a support spring (10).

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