A flow regulating valve and method of use

Abstract

The application discloses a flow regulating period flow limiting valve and a use method thereof, and belongs to the technical field of flow limiting valves. The flow regulating period flow limiting valve comprises a mounting fixed plate, an extended water flow cavity is arranged at the lower end of the mounting fixed plate, a main filter screen is arranged at the lower end of the outside of the flow limiting plate, a main filter cavity is arranged in the middle of the inside of the main filter screen, an extended filter screen is arranged at one side of the outside of the main filter screen, a water flow direction limiting ring is arranged at the outside of the extended water flow cavity, and a transmission structure storage cavity is arranged at the upper end of the outside of the water flow direction limiting ring. The application solves the problem that the existing flow limiting valve does not actively filter and limit the inflowing liquid, and internal blockage is caused. The set main filter screen can continuously filter the liquid, continuously limit and filter the flowing liquid, the extended extended filter screen can cope with the rotation and unfolding of the flow limiting plate, and the filtration of the liquid is avoided from being stopped due to unfolding.

Description

Technical Field

[0001] This invention relates to the field of flow limiting valve technology, specifically to a flow limiting valve for regulating flow cycle and its usage method. Background Technology

[0002] A flow restrictor valve is a type of valve used to limit the flow rate of fluid in a pipeline. It can control the flow rate of fluid to prevent problems such as system overload or pressure fluctuations caused by excessive flow. Flow restrictor valves are usually made of materials such as metal or plastic. Different types and specifications of flow restrictor valves can be selected according to different application scenarios.

[0003] Chinese patent CN213929497U discloses a flow limiting valve, including a valve body, a valve plate, a crank arm, and a float. A water inlet is formed on the valve body, and a rotating shaft is provided on the valve body. The valve plate and the crank arm are rotatably connected to the rotating shaft, and the valve plate and the crank arm rotate synchronously. The valve plate can seal the water inlet. The end of the crank arm opposite to the rotating end is fixedly connected to the float. This utility model flow limiting valve does not use a mechanical device and is a complete integrated device. It has a simple structure, is easy to install, and has low cost. It uses water level, buoyancy, and gravity to realize the opening and closing of the water inlet of the flow limiting valve.

[0004] In actual use, the flow limiting valve of the aforementioned patent does not actively filter and restrict the incoming liquid, which can cause internal blockage. On the other hand, the flow limiting valve cannot actively open at regular intervals during the flow limiting process, so that the flow limiting valve can discharge liquid at regular intervals and in a quantitative manner. Therefore, it does not meet the existing requirements. In response, we propose a flow limiting valve with adjustable flow cycle and its usage method. Summary of the Invention

[0005] The purpose of this invention is to provide a flow-limiting valve for regulating flow cycle and its usage method. When the float is pushed by buoyancy, it can pull and drive the flow-limiting plate to rotate around the second connecting block. The rotation actively reduces the liquid flow, thereby completing the flow restriction. On the other hand, by reserving a main water chamber, the continuous liquid flow requirement can be maintained, and the liquid can be continuously filtered by the set main filter screen. The extended filter screen can cope with the rotation and unfolding of the flow-limiting plate, avoiding the cessation of liquid filtration when unfolding. This solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a flow limiting valve for adjusting flow cycle, comprising a mounting plate, wherein an extended flow chamber is provided at the lower end of the mounting plate, and a main flow chamber is provided at the lower end of the extended flow chamber;

[0007] It also includes a flow restrictor plate, which is set at the front end of the extended flow chamber. A main filter screen is set at the lower end of the outside of the flow restrictor plate, and the inside of the main filter screen is welded and fixed to the outside of the flow restrictor plate. A main filter chamber is set in the middle of the inside of the main filter screen, and an extended filter screen is set on one side of the outside of the main filter screen, and the extended filter screen is welded and fixed to the main filter screen.

[0008] Preferably, a water flow direction limiting ring is provided on the outside of the extended water flow cavity, and the water flow direction limiting ring is welded and fixed to the mounting plate. A transmission structure storage cavity is provided at the upper end of the outside of the water flow direction limiting ring. A first limiting plate is provided on one side of the transmission structure storage cavity. One side of the first limiting plate is rotatably connected to the mounting plate through a rotating connecting disc.

[0009] Preferably, a transmission plate is provided at one end of the rotating connecting plate, a flow limiting plate is provided at the lower end of the transmission plate, a second connecting block is provided at the front end of the transmission plate, a first connecting strip is provided on one side outside the second connecting block, a float is provided at the front end of the first connecting strip, and the float and the first connecting strip are rotatably connected by a rotating connecting shaft.

[0010] Preferably, a second limiting plate is provided at the lower end of one side of the first limiting plate, and a pressing sensor is provided on one side between the second limiting plate and the first limiting plate. The outer wall of the pressing sensor is fixedly connected to the second limiting plate by bolts. An output motor is provided on one side of the second limiting plate, and the output motor is electrically connected to the pressing sensor.

[0011] Preferably, a first transmission gear is provided at one end of the output shaft of the output motor, a second transmission gear is provided at the upper end of the outside of the first transmission gear, and the outside of the second transmission gear is meshed with the outside of the first transmission gear, a fourth transmission gear is provided at one end of the second transmission gear, and the fourth transmission gear is welded and fixed to the second transmission gear, and a third transmission gear is provided on one side of the outside of the fourth transmission gear, and the outside of the third transmission gear is meshed with the outside of the fourth transmission gear.

[0012] Preferably, a first connecting block is provided at one end of the third transmission gear, the first connecting block is welded and fixed to the third transmission gear, an extension block is provided on one side outside the first connecting block, and the extension block and the first connecting block are integral structures, the extension block being located at the upper end of the first connecting strip.

[0013] Preferably, a second connecting strip is provided at one end of the third transmission gear, the second transmission gear and the first transmission gear. The second connecting strip is rotatably connected to one end of the third transmission gear, the second transmission gear and the first transmission gear, and the lower end of the second connecting strip is welded and fixed to one end of the mounting plate.

[0014] Preferably, a rubber bonding pad is provided between the flow limiting plate and the mounting plate. The rubber bonding pad is made of rubber, and the rear end of the rubber bonding pad is fixedly connected to the mounting plate by bolts.

[0015] The method for using a flow-limiting valve to regulate the flow cycle includes the following steps:

[0016] Step 1: The downward pressure of the float's weight will drive the second connecting block through the first connecting bar. The rotation of the second connecting block will drive the transmission plate and the connected flow limiting plate to rotate around the second connecting block. The flow limiting plate can be deployed by pressing the float.

[0017] Step 2: The water flows through the guide ring and then moves towards the limiting ring. As the water level rises, it pushes the float. After the float rises, it is driven by the first connecting bar, the second connecting block and the transmission plate to rotate the flow limiting plate. The rotation of the flow limiting plate can fill the extended flow cavity, thus leaving the main flow cavity to complete the continuous liquid flow.

[0018] Step 3: The rotation of the transmission plate will cause the first limiting plate to rotate around the rotating connecting plate. The rotation will bring it into contact with the pressing sensor on one side of the second limiting plate. After the pressing sensor is pressed, it will give the output motor a start signal.

[0019] Step 4: When the output motor starts, it will drive the first transmission gear to rotate. The first transmission gear will drive the second transmission gear on one side to rotate. The second transmission gear will directly drive the fourth transmission gear to rotate. The fourth transmission gear will drive the third transmission gear on one side to rotate.

[0020] Step 5: The third transmission gear will drive the first connecting block at one end to rotate. The rotation of the first connecting block will drive the extension block to rotate. The rotation of the extension block will squeeze and push the first connecting strip. The pushed first connecting strip will be rotated by the transmission of the second connecting block and the transmission plate.

[0021] Step 6: The rotation of the extension block at the same frequency can periodically drive the flow limiting plate to rotate and unfold, thus exposing the extended flow chamber and the main flow chamber. When the extension block continues to rotate without contacting the first connecting bar, the buoyancy of the float will cause the flow limiting plate to reset.

[0022] Step 7: During the flow of liquid, the liquid will be filtered through the main filter chamber at the lower end of the main filter screen to prevent foreign objects from entering. After the flow restrictor rotates and unfolds, the main filter screen will drive the extension filter screen to rotate. The extension filter screen, together with the main filter screen, can comprehensively restrict and filter the extension flow chamber and the main flow chamber to prevent foreign objects from flowing in and from clogging the water flow direction of the restrictor ring.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. This invention features a main water chamber located at the lower end of the flow-limiting plate, a main filter screen located outside the main water chamber, an extended filter screen located on one side of the main filter screen, and a main filter cavity located at the lower end of the main filter screen. In practical application, the buoyancy of the liquid pushes the float, which, after being pushed by the buoyancy, pulls and drives the flow-limiting plate to rotate around the second connecting block. The rotation actively reduces the liquid flow, thereby achieving flow restriction. On the other hand, by reserving the main water chamber, the continuous liquid flow requirement can be maintained, and the main filter screen can continuously filter the liquid, continuously restricting and filtering the flowing liquid. The extended filter screen can cope with the rotation and unfolding of the flow-limiting plate, preventing the unfolding from stopping the filtration of the liquid.

[0025] 2. This invention features a transmission structure storage cavity at the rear end of the mounting plate. Inside the storage cavity is a first transmission gear, with a second transmission gear at its upper end and a fourth transmission gear at its lower end. A third transmission gear is located on one side of the fourth transmission gear, and one end of the third transmission gear is connected to a first connecting block and an extension block. In practical application and flow restriction, to meet the demand for a certain period of liquid flow, the buoyancy of the float drives the first limiting plate to rotate. The rotation of the first limiting plate allows it to engage with a pressure sensor. When the pressure sensor is pressed, it sends a start signal to the output motor. The output of the output motor, through the deceleration transmission of the first, second, fourth, and third transmission gears, drives the extension block to rotate. The rotation of the protruding extension block squeezes the first connecting strip, thereby adjusting the angle of the extended flow chamber and the area of ​​the main flow chamber, periodically increasing the drainage volume to meet the demand for a certain period of liquid flow. Furthermore, the rotation frequency of the output motor shaft is adjusted to meet the requirements of the extended flow chamber's rotation frequency and the demand for a certain period of liquid flow. Attached Figure Description

[0026] Figure 1 This is a perspective view of the overall external structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 Enlarged view of a portion of region A in the middle;

[0028] Figure 3 This is a schematic diagram of the unfolded structure of the flow-limiting plate of the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the storage cavity in the transmission structure of the present invention;

[0030] Figure 5 For the present invention Figure 4 Enlarged view of a portion of region B in the middle;

[0031] Figure 6 This is a schematic diagram of the fourth transmission gear transmission structure of the present invention;

[0032] Figure 7 For the present invention Figure 6 Enlarged view of a portion of region C.

[0033] In the diagram: 1. Mounting plate; 2. Water flow direction limiting ring; 3. Transmission structure storage chamber; 4. First connecting block; 5. Extension block; 6. Transmission plate; 7. Second connecting block; 8. First connecting strip; 9. Float; 10. Flow limiting plate; 11. Rotating connecting shaft; 12. Main filter screen; 13. Extended filter screen; 14. Main filter chamber; 15. Main water flow chamber; 16. Rubber bonding pad; 17. Extended water flow chamber; 18. Output motor; 19. Second connecting strip; 20. First transmission gear; 21. Second transmission gear; 22. Third transmission gear; 23. Rotating connecting disc; 24. First limiting plate; 25. Second limiting plate; 26. Press sensor; 27. Fourth transmission gear. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] To address the issue of internal blockage caused by a flow-limiting valve disclosed in Chinese Patent Publication No. CN213929497U, which lacks active filtration and restriction of the incoming liquid, please refer to [the relevant documentation / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 This embodiment provides the following technical solution:

[0036] A flow-limiting valve for regulating flow cycle includes a mounting plate 1. An extended flow chamber 17 is located at the lower end of the mounting plate 1, and a main flow chamber 15 is located at the lower end of the extended flow chamber 17. It also includes a flow-limiting plate 10 located at the front end of the extended flow chamber 17. A main filter screen 12 is located at the lower end of the outer surface of the flow-limiting plate 10, and the interior of the main filter screen 12 is welded to the exterior of the flow-limiting plate 10. A main filter chamber 14 is located in the middle of the interior of the main filter screen 12. An extended filter screen 13 is located on one side of the exterior of the main filter screen 12 and is welded to the main filter screen 12. A water flow direction limiting ring 2 is located outside the extended flow chamber 17 and is welded to the mounting plate 1. A transmission structure storage cavity 3 is provided at the upper end of the outer side of the limiting ring 2. A first limiting plate 24 is provided on one side inside the transmission structure storage cavity 3. One side of the first limiting plate 24 is rotatably connected to the mounting and fixing plate 1 through a rotating connecting plate 23. The buoyancy of the liquid will push the float 9. After being pushed by the buoyancy, the float 9 can pull and drive the flow limiting plate 10 to rotate around the second connecting block 7. The rotation actively reduces the liquid flow, thereby completing the flow limitation. On the other hand, the reserved main water cavity 15 can maintain the continuous liquid flow demand, and the set main filter screen 12 can continuously filter the liquid, continuously limiting and filtering the flowing liquid. The extended extended filter screen 13 can cope with the rotation and unfolding of the flow limiting plate 10, avoiding the unfolding and stopping the filtration of the liquid.

[0037] To address the issue that existing flow-limiting valves cannot automatically and periodically expand during the flow-limiting process, thus enabling timed and metered liquid discharge, please refer to [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 This embodiment provides the following technical solution:

[0038] A transmission plate 6 is provided at one end of the rotating connecting plate 23. A flow limiting plate 10 is provided at the lower end of the transmission plate 6. A second connecting block 7 is provided at the front end of the transmission plate 6. A first connecting strip 8 is provided on one side of the outer side of the second connecting block 7. A float 9 is provided at the front end of the first connecting strip 8. The float 9 and the first connecting strip 8 are rotatably connected by a rotating connecting shaft 11. A second limiting plate 25 is provided at the lower end of one side of the first limiting plate 24. A pressure sensor 26 is provided on one side between the second limiting plate 25 and the first limiting plate 24. The outer wall of the pressure sensor 26 is fixedly connected to the second limiting plate 25 by bolts. An output motor 18 is provided on one side of the second limiting plate 25. The output motor 18 is connected to the pressure sensor 26. The components are electrically connected. One end of the output shaft of the output motor 18 is equipped with a first transmission gear 20. A second transmission gear 21 is located on the upper part of the outer side of the first transmission gear 20, and the outer side of the second transmission gear 21 meshes with the outer side of the first transmission gear 20. A fourth transmission gear 27 is located at one end of the second transmission gear 21, and the fourth transmission gear 27 is welded and fixed to the second transmission gear 21. A third transmission gear 22 is located on one side of the outer side of the fourth transmission gear 27, and the outer side of the third transmission gear 22 meshes with the outer side of the fourth transmission gear 27. A first connecting block 4 is located at one end of the third transmission gear 22, and the first connecting block 4 is welded and fixed to the third transmission gear 22. The outer side of the first connecting block 4... An extension block 5 is provided on one side, and the extension block 5 is an integral structure with the first connecting block 4. The extension block 5 is located at the upper end of the first connecting strip 8. A second connecting strip 19 is provided at one end of the third transmission gear 22, the second transmission gear 21, and the first transmission gear 20. The second connecting strip 19 is rotatably connected to one end of the third transmission gear 22, the second transmission gear 21, and the first transmission gear 20. The lower end of the second connecting strip 19 is welded and fixed to one end of the mounting plate 1. A rubber bonding pad 16 is provided between the flow limiting plate 10 and the mounting plate 1. The rubber bonding pad 16 is made of rubber. The rear end of the rubber bonding pad 16 is fixedly connected to the mounting plate 1 by bolts. The buoyancy of the float 9 drives the first limiting plate 24. The rotation of the first limiting plate 24 allows it to fit against the pressing sensor 26. When the pressing sensor 26 is pressed, it can give the output motor 18 a start signal. The output of the output motor 18 is driven by the first transmission gear 20, the second transmission gear 21, the fourth transmission gear 27 and the third transmission gear 22 to rotate the extension block 5. The rotation of the protruding extension block 5 will squeeze the first connecting strip 8, thereby adjusting the angle of the extended water flow chamber 17 and the area of ​​the main water flow chamber 15, and periodically increasing the drainage volume to meet the liquid flow volume requirement of a certain cycle. On the other hand, the rotation frequency of the output shaft of the output motor 18 is adjusted according to the rotation frequency of the extended water flow chamber 17 and the liquid flow volume requirement of a certain cycle.

[0039] The method for using a flow-limiting valve to regulate the flow cycle includes the following steps:

[0040] Step 1: The downward pressure of the float 9 will drive the second connecting block 7 through the first connecting bar 8. The rotation of the second connecting block 7 can drive the transmission plate 6 and the connected flow limiting plate 10 to rotate around the second connecting block 7. The flow limiting plate 10 can be unfolded by pressing the float 9.

[0041] Step 2: After the water flows through the guide ring 2, it pushes the float 9 as the water level rises. After the float 9 floats up, it drives the flow limiting plate 10 to rotate through the transmission of the first connecting bar 8, the second connecting block 7 and the transmission plate 6. The rotation of the flow limiting plate 10 can fill the extended flow cavity 17, thus leaving the main flow cavity 15 to complete the continuous liquid flow.

[0042] Step 3: The rotation of the transmission plate 6 will cause the first limiting plate 24 to rotate around the rotating connecting plate 23. The rotation will come into contact with the pressing sensor 26 on one side of the second limiting plate 25. After the pressing sensor 26 is pressed, it will give the output motor 18 a start signal.

[0043] Step 4: When the output motor 18 starts, it will drive the first transmission gear 20 to rotate. The first transmission gear 20 will drive the second transmission gear 21 on one side to rotate. The second transmission gear 21 will directly drive the fourth transmission gear 27 to rotate. The fourth transmission gear 27 will drive the third transmission gear 22 on one side to rotate.

[0044] Step 5: The third transmission gear 22 will drive the first connecting block 4 at one end to rotate. The rotation of the first connecting block 4 will drive the extension block 5 to rotate. The rotation of the extension block 5 will squeeze and push the first connecting strip 8. The pushed first connecting strip 8 will rotate after being driven by the second connecting block 7 and the transmission plate 6.

[0045] Step 6: The rotation of the extension block 5 at the same frequency can periodically drive the flow limiting plate 10 to rotate and unfold, thus exposing the extended flow chamber 17 and the main flow chamber 15. When the extension block 5 continues to rotate and does not contact the first connecting bar 8, the buoyancy of the float 9 will drive the flow limiting plate 10 to reset.

[0046] Step 7: During the flow of the liquid, it will be filtered through the main filter chamber 14 at the lower end of the main filter screen 12 to prevent foreign objects from entering. After the flow restrictor 10 rotates and unfolds, the main filter screen 12 will drive the extension filter screen 13 to rotate. The extension filter screen 13, together with the main filter screen 12, can comprehensively restrict and filter the extension flow chamber 17 and the main flow chamber 15 to prevent foreign objects from flowing in and to prevent foreign objects from clogging the water flow direction of the restriction ring 2.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flow-limiting valve for regulating flow cycle, comprising a mounting plate (1), wherein an extended flow chamber (17) is provided at the lower end of the mounting plate (1), and a main flow chamber (15) is provided at the lower end of the extended flow chamber (17), characterized in that; It also includes a flow restrictor (10), which is disposed at the front end of the extended flow chamber (17). A main filter screen (12) is disposed at the lower end of the outside of the flow restrictor (10), and the inside of the main filter screen (12) is welded and fixed to the outside of the flow restrictor (10). A main filter chamber (14) is disposed in the middle of the inside of the main filter screen (12). An extended filter screen (13) is disposed on one side of the outside of the main filter screen (12), and the extended filter screen (13) is welded and fixed to the main filter screen (12). A water flow direction restriction ring (2) is disposed on the outside of the extended flow chamber (17), and the water flow direction restriction ring (2) is welded and fixed to the mounting plate (1). A transmission structure storage chamber (3) is disposed at the upper end of the outside of the water flow direction restriction ring (2). A first restriction plate (24) is disposed on one side of the inside of the transmission structure storage chamber (3). One side of the first restriction plate (24) is connected to the mounting plate (1) by a rotating connecting plate (23). A rotating connection is provided. One end of the rotating connecting plate (23) is provided with a transmission plate (6). The lower end of the transmission plate (6) is provided with a flow limiting plate (10). The front end of the transmission plate (6) is provided with a second connecting block (7). The outer side of the second connecting block (7) is provided with a first connecting strip (8). The front end of the first connecting strip (8) is provided with a float (9). The float (9) and the first connecting strip (8) are rotatably connected by a rotating connecting shaft (11). The lower end of one side of the first limiting plate (24) is provided with a second limiting plate (25). The side between the second limiting plate (25) and the first limiting plate (24) is provided with a pressing sensor (26). The outer wall of the pressing sensor (26) is fixedly connected to the second limiting plate (25) by bolts. The side of the second limiting plate (25) is provided with an output motor (18). The output motor (18) is electrically connected to the pressing sensor (26).

2. The flow-limiting valve for regulating the flow cycle according to claim 1, characterized in that: The output motor (18) has a first transmission gear (20) at one end of its output shaft, a second transmission gear (21) at the upper end of the first transmission gear (20) and the outer side of the second transmission gear (21) meshing with the outer side of the first transmission gear (20), a fourth transmission gear (27) at one end of the second transmission gear (21) and welded to the second transmission gear (21), and a third transmission gear (22) at one side of the outer side of the fourth transmission gear (27) and meshing with the outer side of the fourth transmission gear (27).

3. The flow limiting valve for regulating the flow cycle according to claim 2, characterized in that: One end of the third transmission gear (22) is provided with a first connecting block (4), the first connecting block (4) is welded and fixed to the third transmission gear (22), an extension block (5) is provided on one side of the outside of the first connecting block (4), and the extension block (5) and the first connecting block (4) are an integral structure. The extension block (5) is located at the upper end of the first connecting strip (8).

4. The flow limiting valve for regulating the flow cycle according to claim 3, characterized in that: A second connecting strip (19) is provided at one end of the third transmission gear (22), the second transmission gear (21) and the first transmission gear (20). The second connecting strip (19) is rotatably connected to one end of the third transmission gear (22), the second transmission gear (21) and the first transmission gear (20). The lower end of the second connecting strip (19) is welded and fixed to one end of the mounting plate (1).

5. The flow-limiting valve for regulating the flow cycle according to claim 4, characterized in that: A rubber bonding pad (16) is provided between the flow limiting plate (10) and the mounting plate (1). The rubber bonding pad (16) is made of rubber, and the rear end of the rubber bonding pad (16) is fixedly connected to the mounting plate (1) by bolts.

6. The method of using the flow-limiting valve for adjusting the flow cycle as described in claim 5, characterized in that: Includes the following steps: Step 1: The downward pressure of the float (9) will drive the second connecting block (7) through the first connecting bar (8). The rotation of the second connecting block (7) can drive the transmission plate (6) and the connected flow limiting plate (10) to rotate around the second connecting block (7). The flow limiting plate (10) can be unfolded by pressing the float (9). Step 2: After the water flows through the guide ring (2), it pushes the float (9) as the water level rises. After the float (9) floats up, it drives the flow limiting plate (10) to rotate through the transmission of the first connecting bar (8), the second connecting block (7) and the transmission plate (6). The rotation of the flow limiting plate (10) can fill the extended flow cavity (17) and leave the main flow cavity (15) to complete the continuous liquid flow. Step 3: The rotation of the transmission plate (6) drives the first limiting plate (24) to rotate around the rotating connecting plate (23) as the center, rotating the pressing sensor (26) on the side of the second limiting plate (25). After the pressing sensor (26) is pressed, it gives the output motor (18) a start signal. Step 4: When the output motor (18) starts, it will drive the first transmission gear (20) to rotate. The first transmission gear (20) will drive the second transmission gear (21) on one side to rotate. The second transmission gear (21) will drive the fourth transmission gear (27) to rotate. The fourth transmission gear (27) will drive the third transmission gear (22) on one side to rotate. Step 5: The third transmission gear (22) will drive the first connecting block (4) at one end to rotate. The rotation of the first connecting block (4) will drive the extension block (5) to rotate. The rotation of the extension block (5) will squeeze and push the first connecting strip (8). The first connecting strip (8) will rotate after being driven by the second connecting block (7) and the transmission plate (6). Step 6: The rotation of the extension block (5) at the same frequency drives the flow limiting plate (10) to rotate and unfold, revealing the extended flow chamber (17) and the main flow chamber (15). When the extension block (5) continues to rotate and does not contact the first connecting bar (8), the buoyancy of the float (9) will drive the flow limiting plate (10) to reset. Step 7: During the flow of the liquid, the main filter chamber (14) at the lower end of the main filter screen (12) filters the flowing liquid to prevent foreign objects from entering. After the flow restrictor (10) rotates and unfolds, the main filter screen (12) drives the extension filter screen (13) to rotate. The extension filter screen (13) works with the main filter screen (12) to restrict and filter the extension flow chamber (17) and the main flow chamber (15) to prevent foreign objects from flowing in and to prevent foreign objects from blocking the water flow towards the restrictor ring (2).

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