Single-clack type check valve

Abstract

The utility model relates to the technical field of valves, in particular to a single-clack type check valve which comprises a fixing disc, a check opening is formed in the middle of the fixing disc, a valve plate groove is formed in one side of the check opening, a valve plate is arranged in the valve plate groove, the upper portion of the valve plate is rotationally connected with the fixing disc through a rotating shaft, and a reset spring is installed on the lower portion of the valve plate. A fixing block is installed at one end of the reset spring, an inner groove is formed in the inner side of the bottom of the fixing disc, and the reset spring and the fixing block are located in the inner groove. According to the single-clack type check valve, the sealing performance of the single-clack type check valve is remarkably improved by optimizing the structure of the valve plate and additionally arranging the reset spring. The matching between the valve plate and the non-return opening is tighter, and the fluid is effectively prevented from leaking when the valve is closed. And meanwhile, the reset spring is arranged, so that the valve plate can be rapidly reset when being closed, and the sealing effect is further enhanced. The resistance adjusting assembly is introduced, so that the resistance of the single-clack type check valve is flexibly adjusted.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and more specifically, to a single-disc check valve. Background Technology

[0002] In fluid control systems, check valves play a crucial role. Their main function is to prevent backflow of fluid in pipelines, thereby ensuring the normal operation of the system and the stable transmission of fluid. Single-disc check valves, as a common type of check valve, are widely used due to their simple structure, ease of operation, and high efficiency.

[0003] However, traditional single-disc check valves often have some problems in practical use. First, insufficient sealing performance is a prominent issue, which may lead to fluid leakage when the valve is closed, thus affecting the normal operation of the system. Second, the resistance adjustment of traditional single-disc check valves is inconvenient, and it is impossible to flexibly adjust the opening and closing resistance of the valve according to actual needs, which to some extent limits its application range and effectiveness. Utility Model Content

[0004] The purpose of this invention is to provide a single-disc check valve to address the prominent problem of insufficient sealing performance mentioned in the background section, which can lead to fluid leakage when the valve is closed, thus affecting the normal operation of the system. Secondly, the resistance adjustment of traditional single-disc check valves is inconvenient, and the opening and closing resistance cannot be flexibly adjusted according to actual needs, which to some extent limits their application range and effectiveness.

[0005] To achieve the above objectives, this utility model provides a single-disc check valve, including a fixed disc. A check port is provided in the middle of the fixed disc, and a valve plate groove is provided on one side of the check port. A valve plate is disposed in the valve plate groove. The upper part of the valve plate is rotatably connected to the fixed disc via a rotating shaft. A return spring is installed on the lower part of the valve plate, and a fixing block is installed on one end of the return spring. An inner groove is provided on the bottom inner side of the fixed disc, and the return spring and the fixing block are located inside the inner groove. A resistance adjustment component is installed at the bottom of the fixed disc, and the resistance adjustment component is used to adjust the horizontal position of the fixing block.

[0006] Preferably, the valve plate is larger than the check port.

[0007] Preferably, one side of the middle part of the rotating shaft is connected and fixed to the valve plate, and the two ends of the rotating shaft are rotatably connected to locking plates through bearings. The locking plates are fixed to the fixed plate by bolts.

[0008] Preferably, an inner sealing ring is installed on the inner side of the valve plate near the check port.

[0009] Preferably, the resistance adjustment assembly includes a housing, inside which a lead screw is disposed, a lead screw slider is mounted on the lead screw, the top of the lead screw slider is connected to a fixed block, and one end of the lead screw is driven to rotate by a motor.

[0010] Preferably, the top of the housing is provided with a strip-shaped opening, and the top of the lead screw slider slides horizontally along the strip-shaped opening.

[0011] Preferably, a sealing cover is installed on the outer side of one end of the resistance adjustment component.

[0012] Preferably, an outer sealing ring is provided between the outer wall of the valve plate and the inner wall of the stop valve plate groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention significantly improves the sealing performance of a single-disc check valve by optimizing the valve plate structure and adding a return spring. The tighter fit between the valve plate and the check port effectively prevents fluid leakage when the valve is closed. Simultaneously, the return spring allows the valve plate to quickly return to its original position upon closing, further enhancing the sealing effect. This invention also introduces a resistance adjustment component, enabling flexible adjustment of the resistance of the single-disc check valve. Users can adjust the position of the resistance adjustment component according to actual needs, thereby changing the opening and closing resistance of the valve plate to meet the requirements of different operating conditions. This improvement not only enhances the adaptability and flexibility of the check valve but also expands its application range. Furthermore, this invention adds an inner and outer sealing ring between the valve plate and the check valve groove, further improving the sealing reliability of the check valve. These sealing rings effectively prevent fluid leakage and the entry of external impurities into the check valve, ensuring long-term stable operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the resistance adjustment component in this utility model.

[0018] The meanings of the labels in the diagram are as follows:

[0019] 1. Fixed plate; 11. Check port; 12. Valve plate groove; 13. Inner groove; 14. Fixing block; 15. Return spring; 2. Valve plate; 21. Rotating shaft; 22. Bearing; 23. Locking plate; 24. Inner sealing ring; 3. Resistance adjustment assembly; 31. Housing; 311. Strip-shaped opening; 32. Lead screw; 33. Lead screw slider; 34. Motor; 4. Sealing cover; 5. Outer sealing ring. Detailed Implementation

[0020] 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.

[0021] This utility model provides a single-disc check valve, such as Figures 1-3 As shown, the device includes a fixed disk 1, a check port 11 in the middle of the fixed disk 1, a valve plate groove 12 on one side of the check port 11, a valve plate 2 inside the valve plate groove 12, the upper part of the valve plate 2 being rotatably connected to the fixed disk 1 via a rotating shaft 21, a return spring 15 installed on the lower part of the valve plate 2, a fixing block 14 installed on one end of the return spring 15, an inner groove 13 on the inner side of the bottom of the fixed disk 1, the return spring 15 and the fixing block 14 being located inside the inner groove 13, and a resistance adjustment component 3 installed at the bottom of the fixed disk 1 for adjusting the horizontal position of the fixing block 14.

[0022] In this embodiment, the size of the valve plate 2 is larger than the size of the check port 11, so that the valve plate 2 can completely cover the check port 11.

[0023] Specifically, the middle side of the rotating shaft 21 is connected and fixed to the valve plate 2, and the two ends of the rotating shaft 21 are rotatably connected to the locking plate 23 through the bearing 22. The locking plate 23 is fixed to the fixed plate 1 by bolts, which facilitates the installation and fixing of the rotating shaft 21.

[0024] Furthermore, an inner sealing ring 24 is installed on the inner side of the valve plate 2 near the check port 11 to ensure the sealing of the inner side of the valve plate 2.

[0025] Furthermore, the resistance adjustment component 3 includes a housing 31, inside which a lead screw 32 is provided, and a lead screw slider 33 is mounted on the lead screw 32. The top of the lead screw slider 33 is connected to the fixed block 14. One end of the lead screw 32 is driven to rotate by a motor 34. The motor 34 drives the lead screw 32 to rotate, thereby driving the lead screw slider 33 to move, realizing the movement of the fixed block 14, and realizing the adjustment of the resistance of tightening the valve plate 2.

[0026] Furthermore, the top of the housing 31 is provided with a strip-shaped opening 311, and the top of the lead screw slider 33 slides horizontally along the strip-shaped opening 311 to facilitate the horizontal movement of the lead screw slider 33.

[0027] Furthermore, a sealing cover 4 is installed on the outer side of one end of the resistance adjustment component 3 to seal the outer end of the resistance adjustment component 3 and prevent water from entering the motor 34.

[0028] Furthermore, an outer sealing ring 5 is provided between the outer wall of the valve plate 2 and the inner wall of the stop valve plate groove 12 to ensure the sealing of the outer side of the valve plate 2.

[0029] When the single-disc check valve of this utility model is in use, under normal working conditions, the fluid flows in from one side of the check port 11. When the fluid pressure is high enough, it will overcome the elastic force of the return spring 15 and push the valve plate 2 to rotate around the rotating shaft 21, so that the fluid can pass smoothly through the check port 11.

[0030] When the fluid pressure decreases or the flow reverses, the spring force of the return spring 15 causes the valve plate 2 to quickly return to its original position and fit tightly against the check port 11, thereby preventing the fluid from flowing backwards. This design ensures the unidirectional flow of the fluid and prevents backflow.

[0031] In addition, this invention also includes a resistance adjustment component 3, which drives the lead screw 32 to rotate via a motor 34, causing the lead screw slider 33 to slide horizontally along the slot 311, thereby adjusting the horizontal position of the fixed block 14. This design allows the tension of the return spring 15 to be adjusted, thus adjusting the opening and closing resistance of the valve plate 2 according to actual needs to adapt to different fluid pressure and flow requirements.

[0032] During the opening and closing of valve plate 2, the inner sealing ring 24 and the outer sealing ring 5 ensure the sealing of the inner and outer sides of valve plate 2, respectively, effectively preventing fluid leakage. At the same time, the sealing cover 4 also ensures that water will not enter the motor 34 part of the resistance regulating component 3, improving the reliability and service life of the equipment.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A single-disc check valve comprising a fixed disc (1), characterized in that: The middle part of the fixed disc (1) is provided with a check port (11), one side of the check port (11) is provided with a valve plate slot (12), the valve plate slot (12) is provided with a valve plate (2), the upper part of the valve plate (2) is rotatably connected with the fixed disc (1) through a rotating shaft (21), the lower part of the valve plate (2) is provided with a reset spring (15), one end of the reset spring (15) is provided with a fixed block (14), the inner side of the bottom of the fixed disc (1) is provided with an inner groove (13), the reset spring (15) and the fixed block (14) are located in the inner groove (13), the bottom of the fixed disc (1) is provided with a resistance adjusting assembly (3), and the resistance adjusting assembly (3) is used for adjusting the horizontal position of the fixed block (14).

2. The single-disc check valve of claim 1, wherein: The size of the valve plate (2) is greater than the size of the check port (11).

3. The single-disc check valve of claim 1, wherein: The middle part of the rotating shaft (21) is connected with the valve plate (2), and the both ends of the rotating shaft (21) are rotatably connected with a locking plate (23) through a bearing (22), and the locking plate (23) is fixed on the fixed disc (1) through bolts.

4. The single-disc check valve of claim 1, wherein: The inner side of the valve plate (2) is provided with an inner sealing ring (24) near the check port (11).

5. The single-disc check valve of claim 1, wherein: The resistance adjusting assembly (3) comprises an outer shell (31), the inside of the outer shell (31) is provided with a lead screw (32), the lead screw (32) is provided with a lead screw sliding block (33), the top of the lead screw sliding block (33) is connected with the fixed block (14), and one end of the lead screw (32) is driven to rotate through a motor (34).

6. The single-disc check valve of claim 5, wherein: The top of the outer shell (31) is provided with a strip-shaped port (311), and the top of the lead screw sliding block (33) slides horizontally along the strip-shaped port (311).

7. The single-disc check valve of claim 1, wherein: One end of the resistance adjusting assembly (3) is provided with a sealing cover (4) on the outside.

8. The single-disc check valve of claim 1, wherein: An outer sealing ring (5) is arranged between the outer wall of the valve plate (2) and the inner wall of the check valve plate slot (12).

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