A valve with a self-cleaning filter screen

Abstract

The utility model discloses a valve with self-cleaning filter screen, including valve body, the filter box is fixedly arranged to valve body right side, is provided with cleaning assembly on the filter box surface, is provided with filter assembly in the filter box, is fixedly arranged with the inlet pipe to valve body bottom, is fixedly arranged with the connecting flange to inlet pipe liquid inlet end, is provided with the blowdown assembly to filter box right side, through the cleaning assembly to the dirt that adheres on the filter screen is cleaned, makes the dirt follow the water flow and exports through the blowdown assembly, and a part of water flow still can enter the inside of valve body after filtering through the filter screen, thereby make the filter screen of valve body clean up more convenient, avoid the situation that influences the use of valve after removing the valve and cleaning again, and when cleaning the filter screen of valve body, can filter and transport a part of water flow, avoid the situation that cannot transport water flow in the filter screen cleaning process.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve with a self-cleaning filter screen. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the transported medium. Based on their function, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid transport systems, possessing functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow splitting, or overflow pressure relief. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. Valves are also classified according to their material, such as cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, and non-standard customized valves.

[0003] During valve use, impurities may be present in the water flowing into the pipeline. Therefore, a filter screen is installed inside the valve to filter the water flowing into the valve, preventing impurities from accumulating inside the valve and thus preventing the valve from being blocked by accumulated impurities.

[0004] However, during valve use, the filter screen is in long-term contact with impurities in the water flow, causing impurities to adhere to the side of the filter screen that is in contact with the water flow. This means that the filter screen needs to be cleaned after a period of use. The traditional cleaning method is to directly remove the valve before cleaning, which can easily affect the user experience of the valve. Cleaning the filter screen is also quite troublesome, and water cannot be transported during the cleaning process. Based on the above problems, this application proposes a valve with a self-cleaning filter screen. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a valve with a self-cleaning filter screen to solve the aforementioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A valve with a self-cleaning filter screen includes a valve body, a filter box fixedly mounted on the right side of the valve body, a cleaning component mounted on the surface of the filter box, a filter component mounted inside the filter box, a water inlet pipe fixedly mounted at the bottom of the valve body, a connecting flange fixedly mounted at the inlet end of the water inlet pipe, a sewage discharge component mounted on the right side of the filter box, and a flow rate sensor fixedly mounted on the surface of the valve body, the detection end of the flow rate sensor penetrating the valve body and extending into the interior of the valve body.

[0008] Preferably, the cleaning component includes a mounting bracket fixedly installed on the top of the filter box, a stepper motor fixedly mounted on the top of the mounting bracket, a rotating shaft fixedly mounted on the output end of the stepper motor, a mounting sleeve fixedly mounted on the surface of the rotating shaft, a connecting rod fixedly mounted on the outer surface of the mounting sleeve, and a cleaning scraper fixedly mounted on the end of the connecting rod away from the mounting sleeve.

[0009] Preferably, the number of cleaning scrapers is two, and the two cleaning scrapers are symmetrically distributed, and the cleaning scrapers are made of metal.

[0010] Preferably, the filter assembly includes a mounting plate fixedly installed inside the filter box, a fixing plate is bolted to the top of the mounting plate, a sealing ring is connected between the facing surfaces of the fixing plate and the mounting plate, a filter screen is fixedly installed inside the fixing plate, the inner wall of the filter screen is in contact with the surface of the cleaning scraper, a limiting plate is overlapped on the outer surface of the filter screen, and the limiting plate is fixedly installed on the lower side wall of the filter box.

[0011] Preferably, the sewage discharge assembly includes a sewage discharge pipe fixedly installed on the right side of the filter box, a connecting housing fixedly installed at the inlet end of the sewage discharge pipe, an mounting shell fixedly installed on the top of the connecting housing, a hydraulic push rod fixedly installed on the top of the mounting shell, a valve plate fixedly installed at the output end of the hydraulic push rod, a guide rod fixedly installed on the top of the valve plate, the guide rod being slidably installed inside the mounting shell, a sealing gasket fixedly installed on the surface of the valve plate, a connecting pipe fixedly installed on the right side of the connecting housing, and a control box fixedly installed on the front side of the connecting housing.

[0012] Preferably, the filter screen has a circular structure, is made of stainless steel, and does not come into contact with the filter box.

[0013] Preferably, the valve plate has a rectangular structure and is made of stainless steel, and the sealing gasket has a U-shaped structure and is made of corrosion-resistant rubber.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The valve with a self-cleaning filter screen opens the drain assembly controlled by the control box, and the cleaning assembly cleans the impurities attached to the filter screen, allowing the impurities to be discharged with the water flow through the drain assembly. Moreover, some water can still pass through the filter screen and enter the valve body, making it easier to clean the filter screen of the valve body. This avoids the situation where the valve needs to be disassembled for cleaning, which would affect the use of the valve. Furthermore, when cleaning the filter screen of the valve body, a portion of the water flow can be filtered and transported, avoiding the situation where water cannot be transported during the filter screen cleaning process. Attached Figure Description

[0015] Figure 1This is an isometric drawing of the structure of this utility model;

[0016] Figure 2 This is a rear view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the filter box of this utility model;

[0018] Figure 4 This is a schematic diagram of the sewage discharge component of this utility model.

[0019] In the diagram: 1. Valve body; 2. Filter box; 3. Inlet pipe; 4. Fixing frame; 5. Stepper motor; 6. Rotating shaft; 7. Mounting sleeve; 8. Connecting rod; 9. Cleaning scraper; 10. Mounting plate; 11. Fixing plate; 12. Sealing ring; 13. Filter screen; 14. Limiting plate; 15. Drain pipe; 16. Connecting housing; 17. Mounting housing; 18. Hydraulic push rod; 19. Valve plate; 20. Guide rod; 21. Sealing gasket; 22. Connecting pipe; 23. Control box; 24. Flow sensor. 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] Example: Refer to Figure 1-4A valve with a self-cleaning filter screen includes a valve body 1, a filter box 2 fixedly mounted on the right side of the valve body 1, a cleaning component mounted on the surface of the filter box 2, and a filter component inside the filter box 2. The filter component includes a mounting plate 10 fixedly mounted inside the filter box 2, a fixing plate 11 bolted to the top of the mounting plate 10, and a sealing ring 12 connecting the facing surfaces of the fixing plate 11 and the mounting plate 10 to seal the space between the fixing plate 11 and the mounting plate 10. A filter screen 13 is fixedly mounted inside the fixing plate 11, and the inner wall of the filter screen 13 contacts the surface of a cleaning scraper 9. The filter screen 13 has a circular structure and is made of non-woven fabric. Made of stainless steel, the filter screen 13 does not contact the filter box 2. A limiting plate 14 overlaps the outer surface of the filter screen 13 and is fixedly installed on the lower side wall of the filter box 2. Water flows into the interior of the filter screen 13, is filtered by the filter screen 13, and then enters the space between the filter screen 13 and the filter box 2. It then enters the valve body 1 through the filter box 2 and subsequently enters the pipe connected to the valve body 1. The fixing plate 11 is connected to the mounting plate 10 by bolts. If the filter screen 13 is damaged, the top cover of the filter box 2 can be removed, allowing the cleaning component to be moved out of the filter box 2 for filter screen 13 replacement. A water inlet pipe 3 is fixedly installed at the bottom of the valve body 1. The inlet pipe 3 has a fixed connecting flange at the inlet end. A drain assembly is located on the right side of the filter box 2. A flow rate sensor 24 is fixedly mounted on the surface of the valve body 1. The detection end of the flow rate sensor 24 penetrates the valve body 1 and extends into its interior. The cleaning assembly includes a mounting bracket 4 fixedly mounted on the top of the filter box 2. A stepper motor 5 is fixedly mounted on the top of the mounting bracket 4. A rotating shaft 6 is fixedly mounted on the output end of the stepper motor 5. A mounting sleeve 7 is fixedly mounted on the surface of the rotating shaft 6. A connecting rod 8 is fixedly mounted on the outer surface of the mounting sleeve 7. Two cleaning scrapers 9 are fixedly mounted on the end of the connecting rod 8 furthest from the mounting sleeve 7. The plates 9 are symmetrically distributed. The cleaning scraper 9 is made of metal. The stepper motor 5 drives the rotating shaft 6 to rotate the mounting sleeve 7, so that the connecting rod 8 drives the cleaning scraper 9 to clean the contact surface between the filter screen 13 and the water flow. The scraped-off impurities are discharged from the filter box 2 through the sewage discharge component with the water flow, thereby cleaning the filter screen 13. This makes it easier to clean the filter screen 13 of the valve body 1, avoiding the need to remove the valve for cleaning, which would affect the use of the valve. Moreover, when cleaning the filter screen 13 of the valve body 1, a portion of the water flow can be filtered and transported, avoiding the situation where the water flow cannot be transported during the cleaning of the filter screen 13.

[0022] Specifically, the sewage discharge assembly includes a sewage discharge pipe 15 fixedly installed on the right side of the filter box 2. A connecting housing 16 is fixedly installed at the inlet end of the sewage discharge pipe 15. A mounting housing 17 is fixedly installed on the top of the connecting housing 16. A hydraulic push rod 18 is fixedly installed on the top of the mounting housing 17. A valve plate 19 is fixedly installed at the output end of the hydraulic push rod 18. A guide rod 20 is fixedly installed on the top of the valve plate 19. The guide rod 20 is slidably disposed inside the mounting housing 17. A sealing gasket 21 is fixedly installed on the surface of the valve plate 19. The valve plate 19 has a rectangular structure and is made of stainless steel. The stainless steel valve plate 19 is more durable, less susceptible to water corrosion, and extends the service life of the valve plate 19. The sealing gasket 21 has a U-shaped structure and is made of corrosion-resistant rubber. The corrosion-resistant rubber makes the sealing gasket 21 less susceptible to corrosion. A connecting pipe 22 is fixedly installed on the right side of the connecting housing 16, and a control box 23 is fixedly installed on the front side of the connecting housing 16. The valve plate 19 is moved upward by the hydraulic push rod 18 and guided by the guide rod 20. The valve plate 19 then moves the sealing gasket 21 upward, allowing water to flow through the drain pipe 15, the connecting housing 16, and the connecting pipe 22. This facilitates the discharge of scraped impurities from inside the filter box 2, preventing the scraped impurities from accumulating inside the filter box 2 and causing the filter screen 13 to be easily clogged again later.

[0023] In use: Water flows into the filter box 2 through the inlet pipe 3 and is filtered by the filter screen 13. The filtered water then enters the valve body 1 and the connected pipe. The flow rate is detected by the flow sensor 24. When the inlet water volume remains constant, the flow sensor 24 detects a decrease in the flow rate. If this decrease persists for a period of time, it indicates that the filter screen 13 is clogged by impurities in the water. The hydraulic push rod 18 drives the output end to move the valve plate 19 upward. The valve plate 19 then drives the guide rod 20 to slide inside the mounting housing 17, guiding the valve plate 19. The valve plate 19 then moves the sealing gasket 21 upward, allowing water to pass through the filter box 2 and enter the drain. The water flows into the interior of the filter screen 13 through the drain pipe 15 and then into the interior of the connecting housing 16, and is discharged through the connecting pipe 22. At the same time, the stepper motor 5 drives the output end to rotate the rotating shaft 6, which in turn drives the mounting sleeve 7 to rotate. This causes the mounting sleeve 7 to drive the cleaning scraper 9 to make a circular motion through the connecting rod 8, so that the cleaning scraper 9 cleans the contact surface between the filter screen 13 and the water flow, and scrapes off the impurities attached to the filter screen 13. Since part of the water flow passes through the filter screen 13 and enters the interior of the valve body 1, and part of the water flow enters the drain pipe 15 through the filter box 2, the scraped-off impurities are discharged with the water flow into the drain pipe 15 into the connecting housing 16, and then discharged through the connecting pipe 22, thereby completing the automatic cleaning of the filter screen 13.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve with a self-cleaning filter screen, comprising a valve body (1), characterized in that, A filter box (2) is fixedly installed on the right side of the valve body (1). A cleaning component is installed on the surface of the filter box (2). A filter component is installed inside the filter box (2). A water inlet pipe (3) is fixedly installed at the bottom of the valve body (1). A connecting flange is fixedly installed at the liquid inlet end of the water inlet pipe (3). A sewage discharge component is installed on the right side of the filter box (2). A flow rate sensor (24) is fixedly installed on the surface of the valve body (1). The detection end of the flow rate sensor (24) penetrates through the valve body (1) and extends into the interior of the valve body (1).

2. The valve with a self-cleaning filter screen according to claim 1, characterized in that, The cleaning assembly includes a mounting bracket (4) fixedly installed on the top of the filter box (2), a stepper motor (5) fixedly installed on the top of the mounting bracket (4), a rotating shaft (6) fixedly installed at the output end of the stepper motor (5), an mounting sleeve (7) fixedly installed on the surface of the rotating shaft (6), a connecting rod (8) fixedly installed on the outer surface of the mounting sleeve (7), and a cleaning scraper (9) fixedly installed at the end of the connecting rod (8) away from the mounting sleeve (7).

3. The valve with a self-cleaning filter screen according to claim 2, characterized in that, The number of cleaning scrapers (9) is two, and the two cleaning scrapers (9) are symmetrically distributed. The cleaning scrapers (9) are made of metal.

4. The valve with a self-cleaning filter screen according to claim 2, characterized in that, The filter assembly includes a mounting plate (10) fixedly installed inside the filter box (2). A fixing plate (11) is bolted to the top of the mounting plate (10). A sealing ring (12) is connected between the facing surfaces of the fixing plate (11) and the mounting plate (10). A filter screen (13) is fixedly installed inside the fixing plate (11). The inner wall of the filter screen (13) is in contact with the surface of the cleaning scraper (9). A limiting plate (14) is overlapped on the outer surface of the filter screen (13). The limiting plate (14) is fixedly installed on the lower side wall of the filter box (2).

5. The valve with a self-cleaning filter screen according to claim 1, characterized in that, The sewage discharge assembly includes a sewage discharge pipe (15) fixedly installed on the right side of the filter box (2). A connecting housing (16) is fixedly installed at the liquid inlet end of the sewage discharge pipe (15). An installation shell (17) is fixedly installed on the top of the connecting housing (16). A hydraulic push rod (18) is fixedly installed on the top of the installation shell (17). A valve plate (19) is fixedly installed at the output end of the hydraulic push rod (18). A guide rod (20) is fixedly installed on the top of the valve plate (19). The guide rod (20) is slidably installed inside the installation shell (17). A sealing gasket (21) is fixedly installed on the surface of the valve plate (19). A connecting pipe (22) is fixedly installed on the right side of the connecting housing (16). A control box (23) is fixedly installed on the front side of the connecting housing (16).

6. The valve with a self-cleaning filter screen according to claim 4, characterized in that, The filter screen (13) has a circular structure and is made of stainless steel. The filter screen (13) does not contact the filter box (2).

7. The valve with a self-cleaning filter screen according to claim 5, characterized in that, The valve plate (19) has a rectangular structure and is made of stainless steel. The sealing gasket (21) has a U-shaped structure and is made of corrosion-resistant rubber.

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