Filter diaphragm type safety relief valve

Abstract

The utility model discloses a filter diaphragm type safety relief valve, which relates to the field of safety relief valves and comprises a valve body, an inlet and an outlet are respectively arranged on the left side and the right side of the valve body, a valve core is arranged in the middle of the valve body, a first spring is mounted between the top of the valve core and the valve body, and a diaphragm is integrally connected to the bottom of the valve core. A filter screen is arranged in the inlet, a driving fan is rotationally connected to the left side of the fixing frame, a cleaning plate is connected to the right end of a shaft part of the driving fan, and wiping plates are symmetrically and slidably connected to the right side of the cleaning plate. In the using process of the filtering diaphragm type safety pressure release valve, through cooperation of the valve element and the diaphragm, pressure release treatment can be conveniently conducted on the interior of the pressure release valve, meanwhile, after a medium enters the valve body, filtering treatment is conducted firstly, impurities are intercepted, damage to the diaphragm is avoided, cleaning treatment can be conducted while filtering is conducted, and therefore the filtering diaphragm type safety pressure release valve is convenient to use. Intercepted impurities are collected in a centralized manner, so that the filtering part can be continuously used.

Description

Technical Field

[0001] This utility model relates to the field of safety pressure relief valve technology, specifically a filter diaphragm type safety pressure relief valve. Background Technology

[0002] As a key safety component in industrial pipelines, pressure vessels, and reactors, the safety relief valve automatically opens to release pressure when the system pressure exceeds a set threshold, preventing explosions or leaks due to overpressure. This device is widely used in high-pressure environments such as petrochemicals, natural gas transportation, pharmaceuticals, and food processing. Existing safety relief valves have many components that affect the accuracy of the pressure relief. To ensure the accuracy of the pressure relief, it is necessary to manufacture each related component with high precision, which greatly increases the manufacturing difficulty and cost of each component.

[0003] To address the aforementioned deficiencies, existing technology (Chinese Patent No. CN206708480U, published on 2017-12-05) provides a safety relief valve. By movably mounting a spring seat onto the valve body, the pressure within the safety relief valve can be adjusted. This significantly reduces the requirements for the various components affecting the pressure relief within the safety relief valve, lowers the manufacturing cost of each component, and increases the first-pass yield of the product assembly.

[0004] During use, the diaphragm comes into direct contact with the flowing medium. When the medium contains particulate impurities, these impurities will wear down the diaphragm, reducing its lifespan and making it difficult to filter the medium. Additionally, impurities will accumulate inside the valve body, affecting the normal operation of the pressure relief valve. Utility Model Content

[0005] The purpose of this utility model is to provide a filter diaphragm type safety pressure relief valve to solve the problems mentioned in the background art. In the process of use, the diaphragm of the existing safety pressure relief valve is in direct contact with the flowing medium. When the medium contains particulate impurities, the particulate impurities will wear down the diaphragm, thereby reducing the service life of the diaphragm and making it difficult to filter the medium. At the same time, impurity particles will also accumulate inside the valve body, thus affecting the normal operation of the pressure relief valve.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a filter membrane type safety pressure relief valve, comprising a valve body, an inlet and an outlet respectively provided on the left and right sides of the valve body, a valve core provided in the middle of the valve body, a first spring installed between the top of the valve core and the valve body, a diaphragm integrally connected to the bottom of the valve core, the bottom of the diaphragm abutting against the top of a partition, and the partition being installed in the middle of the valve body.

[0007] The inlet is equipped with a filter screen to intercept impurities. A fixing frame is provided on the left side of the filter screen and is installed on the inner wall at the bottom of the inlet. A drive fan is rotatably connected to the left side of the fixing frame. A cleaning plate is connected to the right end of the shaft of the drive fan. The cleaning plate is in close contact with the surface of the filter screen. A tapping rod is rotatably connected to the left side of the cleaning plate. A wiping plate is symmetrically slidably connected to the right side of the cleaning plate. The right end of the wiping plate is in contact with the surface of the filter screen.

[0008] Furthermore, the diaphragm is made of polytetrafluoroethylene, the diaphragm has a hemispherical structure, the area of ​​the diaphragm is equal to the area of ​​the middle part of the valve body, and the diaphragm, when compressed, drives the valve core to move upward and compress the first spring.

[0009] Furthermore, after the diaphragm moves upward and separates from the septum, it increases the flow area and reduces the internal pressure of the valve body. A normal pressure flow space is reserved between the bottom of the septum and the valve body.

[0010] Furthermore, the drive fan rotates and drives the cleaning plate to rotate synchronously. The length of the cleaning plate is equal to the radius of the filter screen. A collection tray is provided at the bottom of the inlet, and the top of the collection tray is provided as an inclined guide plate.

[0011] Furthermore, a torsion spring is installed at the rotating part of the striking rod on the outside of the cleaning plate, and a first protrusion is fixed at the left end of the cleaning plate. The first protrusion intermittently presses against a second protrusion, and the second protrusion is installed at an equal angle on the inner wall of the inlet. The striking rod strikes and vibrates the cleaning plate through the torsion spring, the first protrusion, and the second protrusion.

[0012] Furthermore, a plug plate is fixed to the middle right side of the striking rod. The plug plate is triangular in shape when viewed from above and is inserted through the cleaning plate.

[0013] Furthermore, the wiping plate on the right side of the cleaning plate is set as an "L" shaped structure, and the side of the wiping plate opposite to the insert plate is set as an arc edge. The inclined edge of the insert plate is pressed against the wiping plate. A second spring is installed between the wiping plate and the inner wall of the cleaning plate. The wiping plate forms an opening and closing sliding structure through the insert plate and the second spring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This filter diaphragm safety pressure relief valve allows for convenient pressure relief during use through the cooperation of the valve core and diaphragm. Simultaneously, the medium entering the valve body undergoes filtration to intercept impurities, preventing damage to the diaphragm. Furthermore, filtration can be performed concurrently with cleaning, and the intercepted impurities are collected, enabling continuous use of the filter components.

[0016] 1. Furthermore, when the pressure is normal, the valve core in the safety relief valve body remains stationary. When the pressure in the pipeline is too high, the flow pressure of the medium will push the diaphragm upward, thereby causing the valve core to move upward, which will compress the first spring. The bottom of the diaphragm will also separate from the top of the partition, thereby expanding the flow area and unloading the pressure in the pipeline.

[0017] 2. Furthermore, the medium entering the inlet will drive the drive fan on the fixed frame to rotate. After the medium passes through the filter screen, particulate impurities will be intercepted by the filter screen. After the drive fan rotates, it will drive the cleaning plate to rotate synchronously. After the cleaning plate rotates, it will clean the impurities intercepted on the filter screen and collect them into the collection tray. When the cleaning plate rotates, it will drive the striking rod to rotate synchronously. After the striking rod rotates, the first protrusion on its outer side will intermittently press and abut against the second protrusion, which will cause the striking rod to rotate and hit the outer side of the cleaning plate. At this time, the torsion spring is in the reverse state. When the first protrusion and the second protrusion are misaligned, the torsion spring will drive the striking rod to rotate back. This process is repeated, so that the cleaning plate can clean itself through knocking vibration while cleaning the filter screen.

[0018] 3. Furthermore, when the striking rod rotates, it will cause the insert plate to be inserted into the cleaning plate. The wiping plate in the cleaning plate will be squeezed, which will in turn compress the second spring to separate and slide. When the insert plate is reset, the wiping plate loses the external force resistance, and the second spring will drive the wiping plate to gather and reset. This process repeats, thereby making the wiping plate open and close and slide, improving the cleaning effect on the filter screen and reducing impurity residue. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall orthographic structure of this utility model;

[0021] Figure 3 This is a schematic diagram showing the distribution structure of the valve core, diaphragm, first spring, and partition plate of this utility model;

[0022] Figure 4 This is a left-side view of the distribution of the filter screen, drive fan, cleaning plate, and tapping bar of this utility model.

[0023] Figure 5 This is a schematic diagram of the exploded structure at the connection between the striking rod and the cleaning plate of this utility model;

[0024] Figure 6 This is a schematic diagram of the exploded structure of the cleaning plate and wiping plate of this utility model.

[0025] In the diagram: 1. Valve body; 2. Inlet; 3. Outlet; 4. Valve core; 5. First spring; 6. Diaphragm; 7. Separator; 8. Filter screen; 9. Fixing frame; 10. Collection drawer; 11. Guide plate; 12. Drive fan; 13. Cleaning plate; 14. Striking rod; 15. Torsion spring; 16. First protrusion; 17. Second protrusion; 18. Insert plate; 19. Wiping plate; 20. Second spring. Detailed Implementation

[0026] 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.

[0027] Example 1: Please refer to Figures 1-2 This utility model provides the following technical solution: a filter diaphragm type safety pressure relief valve, including a valve body 1, an inlet 2 and an outlet 3 respectively provided on the left and right sides of the valve body 1, a valve core 4 provided in the middle of the valve body 1, a first spring 5 installed between the top of the valve core 4 and the valve body 1, a diaphragm 6 integrally connected to the bottom of the valve core 4, the bottom of the diaphragm 6 abutting against the top of the partition 7, the partition 7 being installed in the middle of the valve body 1, the diaphragm 6 being made of polytetrafluoroethylene, the diaphragm 6 being a hemispherical structure, the area of ​​the diaphragm 6 being equal to the area of ​​the middle part of the valve body 1, when the diaphragm 6 is compressed, it drives the valve core 4 to move upward and compress the first spring 5, after the diaphragm 6 moves upward and separates from the partition 7, increasing the flow area and reducing the internal pressure of the valve body 1, and a normal pressure flow space is reserved between the bottom of the partition 7 and the valve body 1.

[0028] When in use, connect the inlet 2 and outlet 3 on the left and right sides of the valve body 1 to the corresponding pipelines. When the pressure in the pipeline is normal, the valve core 4 in the valve body 1 of the safety relief valve remains stationary. When the pressure in the pipeline is too high, the flow pressure of the medium will push the diaphragm 6 upward, thereby driving the valve core 4 upward, which will compress the first spring 5. The bottom of the diaphragm 6 will also separate from the top of the partition 7, thereby expanding the flow area and unloading the pressure in the pipeline to avoid the phenomenon of bursting due to excessive pressure.

[0029] Example 2:

[0030] Based on Embodiment 1, a cleaning component for filter 8 is also disclosed; please refer to [reference needed]. Figures 1-2 and Figure 4As shown, its specific structure is as follows: A filter screen 8 for intercepting impurities is installed inside the inlet 2. A fixing frame 9 is installed on the left side of the filter screen 8, and the fixing frame 9 is installed on the inner wall of the bottom of the inlet 2. A drive fan 12 is rotatably connected to the left side of the fixing frame 9. A cleaning plate 13 is connected to the right end of the shaft of the drive fan 12. The cleaning plate 13 is in close contact with the surface of the filter screen 8. A collection tray 10 is installed at the bottom of the inlet 2. An inclined guide plate 11 is installed at the top of the collection tray 10. A rotatable guide plate 11 is rotatably connected to the left outer side of the cleaning plate 13. The striking rod 14 drives the fan 12 to rotate, which in turn drives the cleaning plate 13 to rotate synchronously. The length of the cleaning plate 13 is equal to the radius of the filter screen 8. A torsion spring 15 is installed at the rotating part of the striking rod 14 on the outside of the cleaning plate 13. A first protrusion 16 is fixed at the left end of the cleaning plate 13. The first protrusion 16 intermittently presses against the second protrusion 17. The second protrusion 17 is installed at an equal angle on the inner wall of the inlet 2. The striking rod 14 strikes and vibrates the cleaning plate 13 through the torsion spring 15, the first protrusion 16 and the second protrusion 17.

[0031] During use, the medium entering the inlet 2 will drive the drive fan 12 on the fixed frame 9 to rotate. After the medium passes through the filter screen 8, the particulate impurities will be intercepted by the filter screen 8. After the drive fan 12 rotates, it will drive the cleaning plate 13 to rotate synchronously. After the cleaning plate 13 rotates, it will clean the impurities intercepted on the filter screen 8 and collect them into the collection tray 10. When the cleaning plate 13 rotates, it will drive the striking rod 14 to rotate synchronously. After the striking rod 14 rotates, the first protrusion 16 on its outer side will intermittently press and abut against the second protrusion 17, which will cause the striking rod 14 to rotate and hit the outer side of the cleaning plate 13. At this time, the torsion spring 15 is in the reverse state. When the first protrusion 16 and the second protrusion 17 are misaligned, the torsion spring 15 will drive the striking rod 14 to rotate back. This process is repeated, so that the cleaning plate 13 can clean itself by knocking and vibrating while cleaning the filter screen 8.

[0032] Example 3:

[0033] Based on Embodiment 2, a insert plate 18, a wiping plate 19, and a second spring 20 are also disclosed. Please refer to [link / reference]. Figures 5-6 As shown, its specific structure is as follows: A wiping plate 19 is symmetrically slidably connected to the right side of the cleaning plate 13. The right end of the wiping plate 19 contacts the surface of the filter screen 8. An insert plate 18 is fixed to the middle of the right side of the striking rod 14. The insert plate 18 is set as a triangular structure when viewed from above. The insert plate 18 is inserted through and inserted into the cleaning plate 13. The wiping plate 19 on the right side of the cleaning plate 13 is set as an "L" shaped structure. The side opposite to the insert plate 18 is set as an arc edge. The inclined side of the insert plate 18 is pressed against the wiping plate 19. A second spring 20 is installed between the wiping plate 19 and the inner wall of the cleaning plate 13. The wiping plate 19 forms an opening and closing sliding structure through the insert plate 18 and the second spring 20.

[0034] During use, when the striking rod 14 rotates, it will cause the insert plate 18 to be inserted into the cleaning plate 13. The wiping plate 19 in the cleaning plate 13 will be squeezed, which will compress the second spring 20 to separate and slide. When the insert plate 18 is reset, the wiping plate 19 loses the external force resistance, and the second spring 20 will drive the wiping plate 19 to gather and reset. This process is repeated to make the wiping plate 19 open and close and slide, which improves the cleaning effect on the filter screen 8 and reduces the residue of impurities.

[0035] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0036] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A filter diaphragm type safety pressure relief valve, comprising a valve body (1), wherein an inlet (2) and an outlet (3) are respectively provided on the left and right sides of the valve body (1), a valve core (4) is provided in the middle of the valve body (1), a first spring (5) is installed between the top of the valve core (4) and the valve body (1), a diaphragm (6) is integrally connected to the bottom of the valve core (4), the bottom of the diaphragm (6) is in contact with the top of a partition (7), and the partition (7) is located in the middle of the valve body (1); Its features are: The inlet (2) is equipped with a filter screen (8) for intercepting impurities. A fixing frame (9) is provided on the left side of the filter screen (8). The fixing frame (9) is installed on the inner wall at the bottom of the inlet (2). A drive fan (12) is rotatably connected to the left side of the fixing frame (9). A cleaning plate (13) is connected to the right end of the shaft of the drive fan (12). The cleaning plate (13) is in close contact with the surface of the filter screen (8). A knocking rod (14) is rotatably connected to the left side of the cleaning plate (13). A wiping plate (19) is symmetrically slidably connected to the right side of the cleaning plate (13). The right end of the wiping plate (19) is in contact with the surface of the filter screen (8).

2. The filter diaphragm type safety pressure relief valve according to claim 1, characterized in that: The diaphragm (6) is made of polytetrafluoroethylene and has a hemispherical structure. The area of ​​the diaphragm (6) is equal to the area of ​​the middle part of the valve body (1). When the diaphragm (6) is pressed, it drives the valve core (4) to move upward and compress the first spring (5).

3. A filter diaphragm type safety pressure relief valve according to claim 2, characterized in that: After the diaphragm (6) moves upward, it separates from the septum (7) to increase the flow area and reduce the internal pressure of the valve body (1). A normal pressure flow space is reserved between the bottom of the septum (7) and the valve body (1).

4. A filter diaphragm type safety pressure relief valve according to claim 3, characterized in that: After the drive fan (12) rotates, it drives the cleaning plate (13) to rotate synchronously. The length of the cleaning plate (13) is equal to the radius of the filter screen (8). The bottom of the inlet (2) is provided with a collection tray (10), and the top of the collection tray (10) is provided with an inclined guide plate (11).

5. A filter diaphragm type safety pressure relief valve according to claim 4, characterized in that: A torsion spring (15) is installed at the rotating part of the striking rod (14) on the outside of the cleaning plate (13). A first protrusion (16) is fixed at the left end of the cleaning plate (13). The first protrusion (16) intermittently presses against the second protrusion (17). The second protrusion (17) is installed at an equal angle on the inner wall of the inlet (2). The striking rod (14) strikes and vibrates the cleaning plate (13) through the torsion spring (15), the first protrusion (16), and the second protrusion (17).

6. A filter diaphragm type safety pressure relief valve according to claim 5, characterized in that: A plug plate (18) is fixed to the middle right side of the striking rod (14). The plug plate (18) is a triangular structure when viewed from above. The plug plate (18) is inserted through the cleaning plate (13).

7. A filter diaphragm type safety relief valve according to claim 6, characterized in that: The wiping plate (19) on the right side of the cleaning plate (13) is set in an "L" shape. The wiping plate (19) and the insert plate (18) on the opposite side are set with arc edges. The inclined edge of the insert plate (18) is pressed against the wiping plate (19). A second spring (20) is installed between the wiping plate (19) and the inner wall of the cleaning plate (13). The wiping plate (19) forms an opening and closing sliding structure through the insert plate (18) and the second spring (20).

Images