Anti-blocking flange butterfly valve

Abstract

The utility model discloses an anti-blocking flange butterfly valve which comprises a valve body, one side of the bottom of the valve body is fixedly connected with a fixing seat, one side of the top of the fixing seat is fixedly connected with a connecting pipe, an assembling seat is jointly connected between the valve body and the connecting pipe in a sealing and abutting mode, and a screw pushing assembly is jointly installed between the assembling seat and the valve body. Two T-shaped mounting holes are symmetrically formed in the outer surface of the assembling seat; a filter screen disc is fixedly mounted in the single T-shaped mounting hole in one side of the valve body, and a cleaning assembly with a limiting insertion hole is mounted on the filter screen disc. According to the utility model, through the design of the T-shaped mounting hole, the filter screen disc and the cleaning assembly can be quickly disassembled and replaced, accumulated impurities can be discharged during replacement, the valve does not need to be completely disassembled, and the replacement and impurity discharge operation can be completed only by pushing the assembling seat to move out through the hand wheel and the screw rod; and the maintenance time and complexity are obviously reduced.

Description

Technical Field

[0001] This utility model relates to the field of flange butterfly valve technology, and in particular to an anti-clogging flange butterfly valve. Background Technology

[0002] A flanged butterfly valve is a type of valve used to control fluid flow, primarily regulating the flow rate of the medium in a pipeline by rotating a valve plate. It is widely used in water supply and drainage, metallurgy, energy systems, and light textile industries. The flanged butterfly valve features a novel design, small overall size, and light weight. The butterfly plate employs a double eccentric design, allowing for rapid opening and closing and easy, effortless operation. There is no sliding friction between the butterfly plate and the sealing ring, the sealing surface is wear-resistant, resulting in a long service life, reliable sealing, and easy adjustment.

[0003] A prior art patent with publication number CN222479470U discloses an anti-clogging flange butterfly valve, which includes a valve body, flanges fixedly connected to both ends of the valve body, a valve seat provided on one side of the valve body, a butterfly rod fixedly connected to the bottom of the valve seat, a butterfly plate fixedly connected to the outside of the butterfly rod, a support plate provided inside the valve body, and three support rods fixedly connected to the outside of the support plate.

[0004] This flanged butterfly valve solves the problem in existing butterfly valves where a large amount of impurities accumulate inside the valve body during long-term use, causing blockage and affecting its operation.

[0005] While this flanged butterfly valve has the function of cleaning the filter screen, impurities still remain inside the valve body after cleaning. Long-term accumulation leads to impurity buildup, and simple cleaning methods cannot effectively prevent clogging. To completely solve this problem, the flanged butterfly valve usually needs to be completely disassembled for cleaning, which not only increases the complexity of maintenance but also affects the valve's performance. Secondly, the brush will become dirty after a period of use, affecting the cleaning effect. When replacement is needed, the flanged butterfly valve also needs to be disassembled, which also affects the valve's operation. Therefore, an improvement plan is proposed. Utility Model Content

[0006] This utility model is a clog-resistant flange butterfly valve proposed to overcome the shortcomings of the existing technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an anti-clogging flange butterfly valve, comprising a valve body, a fixed seat fixedly connected to one side of the bottom of the valve body, a connecting pipe fixedly connected to one side of the top of the fixed seat, an assembly seat sealingly abutting between the valve body and the connecting pipe, and a screw push assembly installed between the assembly seat and the valve body.

[0008] The outer surface of the mounting base has two symmetrically formed T-shaped mounting holes;

[0009] A filter screen is fixedly installed in a single T-shaped mounting hole on one side of the valve body, and a cleaning component with a limiting insertion hole is installed on the filter screen.

[0010] A turbine is installed inside the connecting pipe. A spline rod is inserted into one end of the turbine. A positioning block is fixedly connected to one end of the spline rod at the valve body. The positioning block matches the cleaning assembly with the limiting insertion hole.

[0011] The outer surface of the spline rod is rotatably fitted with a long rod, which extends through the inner wall of the connecting tube to the outside. A movable plate is fixedly connected to one end of the long rod outside the connecting tube, and a spring assembly is installed between the movable plate and the connecting tube.

[0012] Furthermore, the screw drive assembly includes two fixed frames, which are symmetrically fixedly installed on the top of the valve body. A screw is rotatably connected between the two fixed frames, and the screw is rotatably connected to the two fixed frames. A handwheel is provided on one side of each fixed frame, and the mounting shaft of the handwheel passes through the adjacent fixed frame and is fixedly connected to the adjacent end of the screw. A slide is threaded onto the outer surface of the screw, and the slide is fixedly connected to the mounting base.

[0013] Furthermore, the cleaning assembly with a limiting insertion hole includes a support shaft that completely penetrates the filter screen and is rotatably connected to it. A limiting insertion hole is provided at one end of the support shaft located on the connecting tube, and the limiting insertion hole matches the positioning block. Two scrapers and two brushes are symmetrically fixedly connected to the outer surface of the support shaft, and the scrapers and brushes are located on both sides of the filter screen and are attached to the outer wall of the filter screen.

[0014] Furthermore, the turbine includes a mounting rod, which is fixedly connected to a connecting pipe. A spline sleeve is rotatably connected through the middle region of the mounting rod, and the spline sleeve is slidably inserted into the spline rod. One end of the spline sleeve is fixedly connected to the turbine body.

[0015] Furthermore, a travel hole extending through to the interior is provided on one side of the outer surface of the connecting tube, and the inner walls on both sides of the travel hole slide in contact with the long rod.

[0016] Furthermore, the movable plate is sealed and fitted to the outer wall of the connecting pipe.

[0017] Furthermore, the spring assembly includes two spring bodies, which are symmetrically fixedly installed at one end of the movable plate. The other ends of the two spring bodies are jointly fixedly connected to a fixing plate, and the fixing plate is fixedly connected to the connecting pipe.

[0018] The beneficial effects of this utility model are:

[0019] In use, this anti-clogging flange butterfly valve, with its T-shaped mounting hole design, allows for quick disassembly and replacement of the filter disc and cleaning assembly. Simultaneously, accumulated impurities are discharged without complete valve disassembly; the replacement and impurity discharge are completed simply by pushing the mounting base out using the handwheel and screw, significantly reducing maintenance time and complexity. Furthermore, the design of the movable plate and spring assembly ensures that the splined rod and positioning block automatically reset when replacing the filter disc, guaranteeing proper connection of the turbine and cleaning assembly. This prevents long-term accumulation of impurities inside the valve body, reduces the frequency of thorough disassembly and cleaning, and improves the valve's ease of use and maintenance efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 : A perspective view of this utility model;

[0022] Figure 2 Side view of this utility model;

[0023] Figure 3 Partial bottom sectional view of this utility model;

[0024] Figure 4 The present utility model Figure 3 Enlarged view of point A in the middle.

[0025] The attached figures are labeled as follows:

[0026] 1. Valve body; 2. Fixing bracket; 3. Handwheel; 4. Slide; 5. T-type mounting hole; 6. Screw; 7. Connecting pipe; 8. Assembly seat; 9. Turbine body; 10. Fixing seat; 11. Movable plate; 12. Fixing plate; 13. Spline sleeve; 14. Spring body; 15. Stroke hole; 16. Mounting rod; 17. Spline rod; 18. Long rod; 19. Positioning block; 20. Limiting hole; 21. Scraper; 22. Support shaft; 23. Filter screen; 24. Brush. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1 to 4 As shown, an anti-clogging flange butterfly valve is disclosed, comprising a valve body 1, a fixed seat 10 fixedly connected to one side of the bottom of the valve body 1, a connecting pipe 7 fixedly connected to one side of the fixed seat 10, an assembly seat 8 sealingly abutting between the valve body 1 and the connecting pipe 7, and sealing rings fixedly connected to both the valve body 1 and the connecting pipe 7 on one side of the assembly seat 8, the sealing rings abutting against the assembly seat 8 to ensure the sealing of the connection, a screw push assembly is installed between the assembly seat 8 and the valve body 1, the screw push assembly includes two fixed brackets 2, and the fixed brackets 2 are symmetrically fixedly installed on the top of the valve body 1, a screw 6 is rotatably connected between the two fixed brackets 2, and the screw 6 is rotatably connected to the two fixed brackets 2, the screw 6 and the fixed brackets 2 are connected by bearings to ensure smooth rotation, a handwheel 3 is provided on one side of each fixed bracket 2, and the mounting shaft of the handwheel 3 passes through the adjacent fixed bracket 2 and is fixedly connected to the adjacent end of the screw 6, a slide 4 is threaded onto the outer surface of the screw 6, and the slide 4 is fixedly connected to the assembly seat 8.

[0029] Two T-shaped mounting holes 5 are symmetrically opened on the outer surface of the mounting base 8. Multiple threaded holes are opened on the built-in steps of the T-shaped mounting holes 5 to facilitate the subsequent installation of the filter screen 23. The filter screen 23 is fixedly installed in a single T-shaped mounting hole 5 on one side of the valve body 1. Multiple through holes are also opened on the surface of the filter screen 23, and the through holes match the threaded holes.

[0030] A cleaning assembly with a limiting insertion hole is installed on the filter screen 23. The cleaning assembly with the limiting insertion hole includes a support shaft 22, which is completely inserted through the filter screen 23 and is rotatably connected to the filter screen 23. The filter screen 23 and the support shaft 22 are connected by a sealed bearing to ensure smooth rotation. A limiting insertion hole 20 is opened at one end of the support shaft 22 located on the connecting pipe 7. Two scrapers 21 and two brushes 24 are symmetrically fixedly connected to the outer surface of the support shaft 22. The scrapers 21 and brushes 24 are located on both sides of the filter screen 23 and are attached to the outer wall of the filter screen 23.

[0031] A turbine is installed inside the connecting pipe 7. A splined rod 17 is inserted into one end of the turbine. The turbine includes a mounting rod 16, which is fixedly connected to the connecting pipe 7. A splined sleeve 13 is rotatably connected through the middle area of ​​the mounting rod 16. The mounting rod 16 and the splined sleeve 13 are connected by a sealed bearing to ensure smooth rotation. The splined sleeve 13 is slidably inserted into the splined rod 17. A turbine body 9 is fixedly connected to one end of the splined sleeve 13.

[0032] The spline rod 17 is fixedly connected to a positioning block 19 at one end of the valve body 1, and the limiting socket 20 matches the positioning block 19. Both the positioning block 19 and the limiting socket 20 adopt a square design. The end of the positioning block 19 is chamfered to facilitate the smooth entry of the positioning block 19 into the limiting socket 20, ensuring the normal connection and operation of the cleaning component.

[0033] A long rod 18 is rotatably fitted onto the outer surface of the spline rod 17, and the long rod 18 extends through the inner wall of the connecting pipe 7 to the outside. A stroke hole 15 extending into the interior is opened on one side of the outer surface of the connecting pipe 7, and the inner walls on both sides of the stroke hole 15 slide against the long rod 18. A movable plate 11 is fixedly connected to one end of the long rod 18 outside the connecting pipe 7. The movable plate 11 is sealed and fitted to the outer wall of the connecting pipe 7. A sealing gasket is installed on one side of the movable plate 11 to ensure the sealing of the connection between the two. A spring assembly is installed between the movable plate 11 and the connecting pipe 7. The spring assembly includes two spring bodies 14, and the two spring bodies 14 are symmetrically fixedly installed at one end of the movable plate 11. The other ends of the two spring bodies 14 are fixedly connected to a fixed plate 12, and the fixed plate 12 is fixedly connected to the connecting pipe 7. The spring bodies 14 can overcome the friction when the movable plate 11 moves, making it easy to push the movable plate 11 to reset and move, while not affecting the rotation of the turbine, ensuring the stability and reliability of the valve operation.

[0034] Working principle: In daily use, fluid enters the valve body 1 through the connecting pipe 7. When it flows through the turbine body 9, the turbine body 9 is driven to rotate by the fluid. The turbine body 9 transmits the rotational motion to the positioning block 19 through the spline sleeve 13 and spline rod 17. The positioning block 19 matches the limiting insertion hole 20 on the support shaft 22, thereby driving the support shaft 22 to rotate. A scraper 21 and a brush 24 are installed on the support shaft 22. As the support shaft 22 rotates, the scraper 21 and brush 24 clean the filter screen 23 to prevent impurities from clogging the filter screen 23.

[0035] When the accumulated impurities on brush 24 and filter disc 23 need to be cleaned or replaced after a period of use, partial disassembly can be performed. The specific steps are as follows:

[0036] 1. Preparation: Place the receiving bucket below the valve body 1 and the connecting pipe 7 to receive any liquids or impurities that may flow out during the disassembly process.

[0037] 2. Replace the filter screen 23 and cleaning assembly: Install the new filter screen 23 and the cleaning assembly with limit insertion holes, including the support shaft 22, scraper 21 and brush 24, into the empty T-shaped mounting hole 5, ensuring that they are firmly fixed.

[0038] 3. Pushing the movable plate 11: Pushing the movable plate 11 causes the splined rod 17 and the positioning block 19 to move away from the valve body 1 via the long rod 18, so that the positioning block 19 moves out of the limiting insertion hole 20. At this time, the spring assembly, including the spring body 14, is compressed, and the movable plate 11 remains in a sealed fit with the outer wall of the connecting pipe 7.

[0039] 4. Rotate handwheel 3: Rotate handwheel 3, which drives screw 6 to rotate. Screw 6 drives slide 4 to move through threaded transmission. Slide 4 is fixedly connected to mounting base 8, thereby driving mounting base 8 to move and move the new filter screen 23 into the working position between valve body 1 and connecting pipe 7.

[0040] 5. Reset Movable Plate 11: After stopping the rotation of handwheel 3, release movable plate 11. Spring body 14 pushes movable plate 11 to reset. Movable plate 11 drives positioning block 19 to reset via long rod 18 and spline rod 17. As turbine body 9 rotates, when positioning block 19 aligns with limit socket 20, positioning block 19 automatically inserts into limit socket 20, completing the reconnection of the cleaning assembly.

[0041] VI. Resumption of Normal Operation: After completing the above operations, the anti-clogging flange butterfly valve can resume normal operation. Continue to clean the filter screen 23 by rotating the turbine body 9 to drive the scraper 21 and brush 24, ensuring long-term stable operation of the valve.

[0042] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A clog-resistant flange butterfly valve, comprising a valve body (1), characterized in that: A fixed seat (10) is fixedly connected to one side of the bottom of the valve body (1), and a connecting pipe (7) is fixedly connected to one side of the top of the fixed seat (10). An assembly seat (8) is sealed and abutted between the valve body (1) and the connecting pipe (7). A screw push assembly is installed between the assembly seat (8) and the valve body (1). The outer surface of the mounting base (8) has two symmetrically arranged T-shaped mounting holes (5); A filter screen (23) is fixedly installed in a single T-shaped mounting hole (5) on one side of the valve body (1), and a cleaning assembly with a limiting insertion hole is installed on the filter screen (23); The connecting pipe (7) is equipped with a turbine inside. One end of the turbine is limited and inserted with a spline rod (17). The spline rod (17) is fixedly connected to a positioning block (19) at one end of the valve body (1), and the positioning block (19) matches the cleaning assembly with a limiting insertion hole. The outer surface of the spline rod (17) is rotatably fitted with a long rod (18), and the long rod (18) extends through the inner wall of the connecting tube (7) to the outside. The long rod (18) is fixedly connected to a movable plate (11) at one end outside the connecting tube (7). A spring assembly is installed between the movable plate (11) and the connecting tube (7).

2. The anti-clogging flange butterfly valve according to claim 1, characterized in that: The screw drive assembly includes two fixed frames (2), which are symmetrically fixedly installed on the top of the valve body (1). A screw (6) is rotatably connected between the two fixed frames (2), and the screw (6) is rotatably connected to the two fixed frames (2). A handwheel (3) is provided on one side of each fixed frame (2), and the mounting shaft of the handwheel (3) passes through the adjacent fixed frame (2) and is fixedly connected to the adjacent end of the screw (6). A slide (4) is threaded onto the outer surface of the screw (6), and the slide (4) is fixedly connected to the mounting base (8).

3. The anti-clogging flange butterfly valve according to claim 1, characterized in that: The cleaning assembly with a limiting insertion hole includes a support shaft (22), which is set through the filter screen (23) and rotatably connected to the filter screen (23). A limiting insertion hole (20) is opened at one end of the support shaft (22) located on the connecting pipe (7), and the limiting insertion hole (20) matches the positioning block (19). Two scrapers (21) and two brushes (24) are symmetrically fixedly connected to the outer surface of the support shaft (22), and the scrapers (21) and brushes (24) are located on both sides of the filter screen (23) and are attached to the outer wall of the filter screen (23).

4. The anti-clogging flange butterfly valve according to claim 1, characterized in that: The turbine includes a mounting rod (16), and the mounting rod (16) is fixedly connected to the connecting pipe (7). A spline sleeve (13) is rotatably connected through the middle area of ​​the mounting rod (16), and the spline sleeve (13) is slidably inserted into the spline rod (17). One end of the spline sleeve (13) is fixedly connected to the turbine body (9).

5. The anti-clogging flange butterfly valve according to claim 1, characterized in that: The outer surface of the connecting pipe (7) is provided with a through hole (15) that extends into the interior, and the inner walls on both sides of the through hole (15) slide against the long rod (18).

6. The anti-clogging flange butterfly valve according to claim 1, characterized in that: The movable plate (11) is sealed and fitted to the outer wall of the connecting pipe (7).

7. The anti-clogging flange butterfly valve according to claim 1, characterized in that: The spring assembly includes two spring bodies (14), and the two spring bodies (14) are symmetrically fixedly installed at one end of the movable plate (11). The other ends of the two spring bodies (14) are fixedly connected to a fixing plate (12), and the fixing plate (12) is fixedly connected to the connecting pipe (7).

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