Rainwater collecting mechanism for municipal garden ecological greening and using method thereof

Abstract

The invention relates to the technical field of rainwater collection, in particular to a rainwater collection mechanism for municipal garden ecological greening and a using method thereof.The rainwater collection mechanism comprises a device shell, baffles are rotationally connected to the two sides of the inner wall of the device shell, and a transmission assembly is fixedly connected to the positions, located at the outer end of the device shell, of the centers of the two baffles; the transmission assembly is used for connecting the two baffles and the device shell, a filter screen A and a filter screen B are sequentially arranged below the two baffles and located on the inner wall of the device shell, and the filter screen B is located at the bottom end of the filter screen A; the filter screen A and the filter screen B of a double-layer filter screen structure are adopted, so that two-stage filtration from coarse to fine is realized; a servo motor is matched to drive a filter screen B to reciprocate, conical insertion blocks are flexibly inserted into filter holes of a filter screen A, blockages are automatically removed, rainwater can be dynamically guided to flow to different storage boxes through relative rotation of baffles, classified storage and utilization of the rainwater according to water quality are achieved, and the utilization efficiency of water resources is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rainwater collection, in particular to a rainwater collection mechanism for municipal garden ecological greening and a use method thereof. BACKGROUND

[0002] With the acceleration of urbanization, water resource shortage, water environment pollution, flood disaster and ecological environment deterioration in some cities in China have been very serious. Rainwater, as a key element in the water cycle system, plays an important role in building a sustainable urban water cycle system. Therefore, how to effectively control and utilize urban rainwater has become an important issue that must be paid attention to by the environment, municipal, planning, construction, landscape, water conservancy and other departments.

[0003] For example, patent number CN205242496U discloses a city rainwater collection and recycling system. A trash screen is arranged in the water inlet device, so that the rainwater can be preliminarily filtered, and the filtering effect of the rainwater is better. The abandoned flow device is arranged in this structure. When the water in the abandoned flow device reaches a certain water level, the control mechanism can automatically block the communication between the water inlet device and the abandoned flow device, and the function of discarding the early rainwater is achieved. For example, patent number CN211816589U discloses a rainwater collection box. The rainwater introduced from the outside is divided by the flow divider. The flow divider can make the rainwater disperse in the circumferential direction. A plurality of guide plates are arranged on the outer periphery of the flow divider. The guide plates can filter the larger impurities in the dispersed rainwater, greatly improve the filtering efficiency, and reduce the phenomenon of blockage. The guide plates are arranged obliquely, and the impurities filtered on the guide plates can be introduced into the filter box, so that the accumulation of impurities on the guide plates does not affect the subsequent rainwater collection and filtration.

[0004] However, the existing city rainwater collection device has the problems of low filtering efficiency, easy clogging of the filter screen, lack of self-cleaning ability, inability to store and utilize rainwater according to demand, and insufficient automation and intelligent level, resulting in high maintenance cost of the device and low water resource utilization rate. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a rainwater collection mechanism for municipal garden ecological greening and a use method thereof, which solves the problems of low filtering efficiency, easy clogging of the filter screen, lack of self-cleaning ability, inability to store and utilize rainwater according to demand, and insufficient automation and intelligent level of the existing city rainwater collection device in use, resulting in high maintenance cost of the device and low water resource utilization rate.

[0006] The technical solution of this invention is as follows: a rainwater harvesting mechanism for municipal landscaping and ecological greening and its usage method, comprising a device housing, with baffles rotatably connected to both sides of the inner wall of the device housing, and a transmission component fixedly connected to the center of the two baffles at the outer end of the device housing. The transmission component is used to connect the two baffles to the device housing, and a filter screen A and a filter screen B are sequentially arranged below the two baffles on the inner wall of the device housing, with filter screen B located at the bottom end of filter screen A. An extension block is provided at the rear end of filter screen B, with one end of the extension block extending to the outside of the transmission component. When the transmission component is activated, the transmission component can cooperate with the extension block to drive filter screen B to repeatedly move inside the device housing. The displacement and transmission components include a servo motor, with a transmission rod A fixedly connected to the output end of the servo motor. One end of the transmission rod A is rotatably connected to a transmission rod B. Both ends of the transmission rod B are ground to one side of two baffles. When the servo motor drives the transmission rod A to rotate, the transmission rod A, in conjunction with the transmission rod B, drives the two baffles to rotate relative to each other on the inner wall of the device housing. One end of the extension block is equipped with a transmission gear located on the transmission rod A. The transmission gear is a half-tooth gear. A rack is located on the outer end face of the extension block on the outside of the transmission gear. The transmission gear and the rack mesh with each other. When the transmission rod A drives the transmission gear to rotate, the transmission gear, in conjunction with the rack, drives the filter screen B to move upward.

[0007] Preferably, a storage tank B is provided at the bottom of the device casing, and storage tanks A are provided on both sides of the device casing. Storage tanks B and A are connected to the device casing. Partitions are provided on both sides of the top surface of storage tank B to separate storage tank B from storage tank A. A discharge port is provided at one end of both storage tanks B and A. A control valve is provided on the inner wall of the discharge port. The device casing can collect rainwater in sections through storage tanks B and A.

[0008] Preferably, a control panel is fixedly connected to the front end of the device housing. The control panel is electrically connected to the control valve and the transmission assembly. When the device is started, the control valve and the transmission assembly can be controlled separately through the control panel.

[0009] Preferably, each of the two baffles is provided with a rotating shaft at one end, and a rotating groove is opened at one end of the rotating shaft on the inner wall of the device housing, with one end of the rotating shaft extending to the inner side of the rotating groove.

[0010] Preferably, a bevel gear A is provided at one end of the transmission rod A and at the intersection of the transmission rod B and the transmission rod A. When the transmission rod A rotates, the transmission rod A, in conjunction with the bevel gear A, drives the transmission rod B to rotate.

[0011] Preferably, bevel gears B are provided at both ends of the transmission rod B and at the intersection of the rotating shaft and the transmission rod B. The bevel gears B at both ends of the transmission rod B are symmetrical about the transmission rod B. When the transmission rod A drives the transmission rod B to rotate, the transmission rod B, in conjunction with the bevel gears B, drives the two baffles to rotate relative to each other.

[0012] Preferably, both ends of filter A are provided with bolts, and filter A is fixedly connected to the device housing by bolts. Both sides of filter B are provided with guide blocks. One end of the guide block is located on the inner wall of the device housing and has a buffer groove. One end of the guide block extends to the inner side of the buffer groove. When filter B moves, filter B is displaced inside the buffer groove.

[0013] Preferably, a buffer spring is fixedly connected to the inner wall of the buffer tank, and the filter screen B is movably connected to the outer shell of the device through the buffer spring. When the filter screen B is displaced to the top of the inner wall of the buffer tank, the filter screen B and the buffer spring of the outer shell of the device are reset.

[0014] Preferably, filter holes are provided at the center of both filter screen A and filter screen B. The diameter of the filter holes on the surface of filter screen A is twice the diameter of the filter holes on the surface of filter screen B. An insert block is provided at the center of the filter holes on the surface of filter screen B. The insert block is conical. When filter screen B comes into contact with filter screen A, one end of the insert block is inserted into the inside of the filter holes on the surface of filter screen A.

[0015] The beneficial effects of this invention are: This rainwater harvesting system for municipal landscaping and ecological greening adopts a double-layer filter structure, with filter A and filter B, to achieve two-stage filtration from coarse to fine. With the servo motor driving the reciprocating motion of filter B, a conical insert is flexibly inserted into the filter holes of filter A to automatically remove blockages. Through the relative rotation of the baffles, rainwater can be dynamically guided to different storage bins, realizing the classification and utilization of rainwater according to water quality and improving the efficiency of water resource utilization. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural illustration of the present invention. Figure One ; Figure 2 The diagram shown is a three-dimensional structural illustration of the present invention. Figure Two ; Figure 3 The diagram shown is a three-dimensional structural illustration of the present invention. Figure Three ; Figure 4 The diagram shown is a schematic representation of the structure of filter A of the present invention; Figure 5 The diagram shown is a schematic representation of the structure of the servo motor of this invention. Figure 6 The diagram shown is a schematic representation of the structure of filter B of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Device housing; 2. Control panel; 3. Storage tank A; 4. Rotating shaft; 5. Storage tank B; 6. Discharge port; 7. Servo motor; 8. Baffle; 9. Filter screen A; 10. Filter screen B; 11. Buffer groove; 12. Buffer spring; 13. Insert block; 14. Transmission rod A; 15. Transmission gear; 16. Extension block; 17. Transmission rod B; 18. Bevel gear A; 19. Bevel gear B; 20. Rack. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-6 This invention provides an embodiment of a rainwater harvesting mechanism for municipal landscaping and ecological greening, and its usage method. The mechanism includes a housing 1, with baffles 8 rotatably connected to both sides of the inner wall of the housing 1. A transmission assembly is fixedly connected to the center of the two baffles 8 at the outer end of the housing 1. The transmission assembly connects the two baffles 8 to the housing 1. Below the two baffles, on the inner wall of the housing 1, filters A9 and B10 are sequentially arranged. Filter B10 is located at the bottom end of filter A9. An extension block 16 is provided at the rear end of filter B10, with one end extending to the outside of the transmission assembly. When the transmission assembly is activated, it can cooperate with the extension block 16 to repeatedly move filter B10 within the housing 1. The transmission assembly includes... A servo motor 7 has a fixed connection to a transmission rod A14 at its output end. One end of the transmission rod A14 is rotatably connected to a transmission rod B17. Both ends of the transmission rod B17 are ground to one side of two baffles 8. When the servo motor 7 drives the transmission rod A14 to rotate, the transmission rod A14 and the transmission rod B17 drive the two baffles 8 to rotate relative to each other on the inner wall of the device housing 1. One end of the extension block 16 is located on the transmission rod A14 and is equipped with a transmission gear 15. The transmission gear 15 is a half-tooth gear. A rack 20 is located on the outer end face of the extension block 16 on the outer side of the transmission gear 15. The transmission gear 15 and the rack 20 mesh with each other. When the transmission rod A14 drives the transmission gear 15 to rotate, the transmission gear 15 and the rack 20 drive the filter screen B10 to move upward.

[0020] Please see Figures 1-2In this embodiment, a storage tank B5 is provided at the bottom of the device housing 1, and storage tanks A3 are provided on both sides of the device housing 1. Storage tanks B5 and A3 are connected to the device housing 1. Partitions are provided on both sides of the top surface of storage tank B5 to separate storage tank B5 and storage tank A3. A discharge port 6 is provided at one end of storage tank B5 and storage tank A3. A control valve is provided on the inner wall of the discharge port 6. The device housing 1 can collect rainwater in sections through storage tanks B5 and A3. A liquid level sensor is provided on the inner wall of storage tanks A3 and B5. The liquid level sensor is electrically connected to the control panel 2. When the rainwater in the storage tank reaches a preset height, the control panel 2 automatically closes the control valve of the corresponding discharge port 6 and issues a full load warning signal. The control panel 2 is fixedly connected to the front end of the device housing 1. The control panel 2 is electrically connected to the control valve and the transmission assembly. When the device is started, the control valve and the transmission assembly can be controlled through the control panel 2. Each component is controlled separately. A rotating shaft 4 is provided at one end of each of the two baffles 8. One end of the rotating shaft 4 has a rotating groove on the inner wall of the outer casing 1. The rotating shaft 4 extends into the inner side of the rotating groove. A bevel gear A18 is provided at one end of the transmission rod A14 and at the intersection of the transmission rod B17 and the transmission rod A14. When the transmission rod A14 rotates, the transmission rod A14, in conjunction with the bevel gear A18, drives the transmission rod B17 to rotate. The two ends of the transmission rod B17 and the intersection of the rotating shaft 4 and the transmission rod... A bevel gear B19 is provided at each intersection of B17. The bevel gears B19 at both ends of the transmission rod B17 are symmetrical about the transmission rod B17. When the transmission rod A14 drives the transmission rod B17 to rotate, the transmission rod B17, in conjunction with the bevel gears B19, drives the two baffles 8 to rotate relative to each other. When the two baffles 8 are closed, they form a V-shaped flow channel with an included angle of 30°–60°, which facilitates the guidance of the pre-filtered rainwater to the central area of ​​the filter screen A9, avoiding uneven filtration caused by water flow deviation.

[0021] Please see Figures 3-4In this embodiment, bolts are provided at both ends of filter screen A9, and filter screen A9 is fixedly connected to the device housing 1 by bolts. Guide blocks are provided on both sides of filter screen B10. One end of the guide block is located on the inner wall of the device housing 1 and has a buffer groove 11. The other end of the guide block extends to the inner side of the buffer groove 11. When filter screen B10 moves, filter screen B10 is displaced inside the buffer groove 11. A buffer spring 12 is fixedly connected to the inner wall of the buffer groove 11. Filter screen B10 is movably connected to the device housing 1 through the buffer spring 12. When filter screen B10 is displaced to the top of the inner wall of the buffer groove 11, filter screen B10 is reset in conjunction with the buffer spring 12 of the device housing 1. The center positions of filter screen A9 and filter screen B10 are both open. The filter screen A9 has filter holes, and the diameter of the filter holes on the surface of the filter screen B10 is twice the diameter of the filter holes on the surface of the filter screen B10. A conical insert 13 is located at the center of the filter holes on the surface of the filter screen B10. When the filter screen B10 comes into contact with the filter screen A9, one end of the insert 13 is inserted into the inside of the filter holes on the surface of the filter screen A9. The surfaces of the filter screens A9 and B10 are coated with a hydrophobic and antibacterial coating to reduce the adhesion of impurities, inhibit the growth of microorganisms, extend the service life of the filter screens, and ensure the water quality of the collected rainwater. The conical tip of the insert 13 is equipped with an elastic silicone head. When the filter screen B10 moves upward and comes into contact with the filter screen A9, the elastic silicone head is flexibly inserted into the filter hole, effectively removing the blockage in the filter hole of the filter screen A9 and realizing the self-cleaning function.

[0022] When in operation, the power is turned on and the device is started. During rainfall, rainwater flows naturally from the top of the outer casing 1 into the central inlet. The rainwater first impacts two opposing baffles 8. Initially, the baffles 8 are closed, forming a 30°–60° V-shaped guide channel, guiding the water flow into the storage tank A3. The user starts the device via the control panel 2, or the system automatically activates the servo motor 7 based on the rainfall sensor. When the water level in either storage tank reaches the preset upper limit, the control panel 2 controls the servo motor 7 to drive the transmission rod A14 to rotate. This drives the transmission rod B17 to rotate synchronously via the bevel gear A18. The bevel gears B19 at both ends of the transmission rod B17 mesh with the rotating shaft 4 of the baffles 8, causing the two baffles 8 to rotate relative to each other, thereby switching the storage tank B5. At the same time, a full load warning signal is issued to remind the user to start the operation. Maintenance personnel promptly drain the water, and the rainwater, initially intercepted by baffle 8, falls into filter screen A9, which has a larger filter hole diameter to filter medium-sized particulate impurities. The rainwater continues to seep down to filter screen B10, which has finer filter holes to further remove tiny suspended solids and improve water quality. At the same time, the operation of servo motor 7 drives filter screen B10 to repeatedly move vertically through extension block 16. The guide blocks on both sides of filter screen B10 slide up and down along buffer groove 11, and buffer spring 12 provides a restoring force to ensure stable reciprocating motion of filter screen B10. When filter screen B10 moves upward and comes into contact with filter screen A9, the conical insert 13 on its surface inserts into the filter hole of filter screen A9 to flexibly unclog blockages and achieve self-cleaning function. In addition, the hydrophobic and antibacterial coating on the surface of the filter screen reduces dirt adhesion and inhibits bacterial growth, ensuring long-term filtration efficiency and water quality safety. Compared to the prior art document CN205242496U, "An Urban Rainwater Harvesting and Reuse System," this system incorporates a screen inside the inlet device for preliminary filtration, resulting in better rainwater filtration. Furthermore, the diversion device with this structure automatically blocks the connection between the inlet device and the diversion device when the water level reaches a certain point, effectively discarding the initial rainwater runoff. CN211816589U describes a rainwater collection box that uses a diverter to distribute rainwater introduced from the outside. The diverter disperses the rainwater in a circumferential direction. Several guide plates are provided on the outer periphery of the diverter. The guide plates simultaneously filter larger impurities in the scattered rainwater, greatly improving filtration efficiency and reducing clogging. The guide plates are inclined so that the impurities filtered on them can be guided into the filter box, preventing impurities from accumulating on the guide plates and affecting subsequent rainwater collection and filtration. This application employs a dual-layer filter structure, with filter A and filter B, to achieve two-stage filtration from coarse to fine. A servo motor drives filter B to reciprocate, while a conical insert flexibly inserts into the filter holes of filter A to automatically remove blockages. The relative rotation of the baffles dynamically guides rainwater to different storage bins, enabling rainwater to be stored and utilized according to water quality, thereby improving water resource utilization efficiency.

[0023] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0024] 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 rainwater collecting mechanism for municipal garden ecological greening, comprising a device shell (1), characterized in that: Both sides of the inner wall of the device shell (1) are rotatably connected with baffles (8), the center positions of the two baffles (8) are fixedly connected with a transmission assembly at the outer end of the device shell (1), the transmission assembly is used for connecting the two baffles (8) and the device shell (1), the lower side of the two baffles (8) is provided with filter screen A (9) and filter screen B (10) on the inner wall of the device shell (1) in sequence, the filter screen B (10) is located at the bottom end of the filter screen A (9), the rear end of the filter screen B (10) is provided with an extension block (16), one end of the extension block (16) extends to the outside of the transmission assembly, when the transmission assembly is started, the transmission assembly can drive the filter screen B (10) to repeatedly displace in the inside of the device shell (1) in cooperation with the extension block (16); The transmission assembly comprises a servo motor (7), the output end of the servo motor (7) is fixedly connected with a transmission rod A (14), one end of the transmission rod A (14) is rotatably connected with a transmission rod B (17), the two ends of the transmission rod B (17) extend to one side of the two baffles (8), when the servo motor (7) drives the transmission rod A (14) to rotate, the transmission rod A (14) drives the two baffles (8) to relatively rotate on the inner wall of the device shell (1) in cooperation with the transmission rod B (17), one end of the extension block (16) is provided with a transmission gear (15) at the transmission rod A (14), the transmission gear (15) is a half-tooth gear, a rack (20) is arranged on the outer side of the transmission gear (15) and the outer end surface of the extension block (16), the transmission gear (15) and the rack (20) are in mesh with each other, when the transmission rod A (14) drives the transmission gear (15) to rotate, the transmission gear (15) drives the filter screen B (10) to move upward in cooperation with the rack (20).

2. The rainwater collecting mechanism for municipal garden ecological greening according to claim 1, characterized in that: The bottom end of the device shell (1) is provided with a storage tank B (5), both sides of the device shell (1) are provided with storage tanks A (3), the storage tank B (5) and the storage tank A (3) are in through connection with the device shell (1), both sides of the top surface of the storage tank B (5) are provided with partitions, the partitions separate the two sides of the storage tank B (5) and the storage tank A (3), one end of the storage tank B (5) and the storage tank A (3) is provided with a discharge port (6), the inner wall of the discharge port (6) is provided with a control valve, the device shell (1) can collect rainwater in different areas through the storage tank B (5) and the storage tank A (3).

3. The rainwater collecting mechanism for municipal garden ecological greening according to claim 2, characterized in that: The front end of the device shell (1) is fixedly connected with a control panel (2), the control panel (2) is electrically connected with the control valve and the transmission assembly, when the device is started, the control panel (2) can control the control valve and the transmission assembly respectively.

4. The rainwater collecting mechanism for municipal garden ecological greening according to claim 1, characterized in that: One end of the two baffles (8) is provided with a rotating shaft rod (4), one end of the rotating shaft rod (4) is provided with a rotating groove in the inner wall of the device shell (1), one end of the rotating shaft rod (4) extends to the inside of the rotating groove.

5. The rainwater collecting mechanism for municipal garden ecological greening according to claim 1, characterized in that: One end of the transmission rod A (14) and the intersection of the transmission rod B (17) and the transmission rod A (14) are provided with bevel gears A (18), when the transmission rod A (14) rotates, the transmission rod A (14) drives the transmission rod B (17) to rotate in cooperation with the bevel gears A (18).

6. The rainwater collecting mechanism for municipal garden ecological greening according to claim 1, characterized in that: Both ends of the transmission rod B (17) and the intersection of the transmission rod B (17) and the rotating shaft rod (4) are provided with bevel gears B (19), the bevel gears B (19) at both ends of the transmission rod B (17) are symmetrical with the transmission rod B (17) as the center, when the transmission rod A (14) drives the transmission rod B (17) to rotate, the transmission rod B (17) drives the two baffles (8) to rotate relatively in cooperation with the bevel gears B (19).

7. The rainwater collecting mechanism for municipal garden ecological greening according to claim 1, characterized in that: Both ends of the filter screen A (9) are provided with bolts, the filter screen A (9) is fixedly connected with the device shell (1) through the bolts, both sides of the filter screen B (10) are provided with guide blocks, one end of the guide block is located in the inner wall of the device shell (1) and is provided with a buffer groove (11), one end of the guide block extends to the inner side of the buffer groove (11), when the filter screen B (10) moves, the filter screen B (10) moves in the inner side of the buffer groove (11).

8. The rainwater collecting mechanism for municipal garden ecological greening according to claim 1, characterized in that: The inner wall of the buffer groove (11) is fixedly connected with a buffer spring (12), the filter screen B (10) is movably connected with the device shell (1) through the buffer spring (12), when the filter screen B (10) moves to the top end of the inner wall of the buffer groove (11), the filter screen B (10) is reset in cooperation with the buffer spring (12) of the device shell (1).

9. The rainwater collecting mechanism for municipal garden ecological greening according to claim 1, characterized in that: The center positions of the filter screen A (9) and the filter screen B (10) are provided with filter holes, the diameter of the filter hole on the surface of the filter screen A (9) is one time of the diameter of the filter hole on the surface of the filter screen B (10), the center position of the filter hole on the surface of the filter screen B (10) is provided with an insertion block (13), the insertion block (13) is conical, when the filter screen B (10) contacts the filter screen A (9), one end of the insertion block (13) is inserted into the inner side of the filter hole on the surface of the filter screen A (9).

10. The method for using the rainwater collecting mechanism for municipal garden ecological greening, characterized in that: The rainwater collecting mechanism for municipal garden ecological greening comprises the rainwater collecting mechanism for municipal garden ecological greening of any one of claims 1-9, and the specific operation is as follows: S1: when working, the power is turned on, the device is started, and when it rains, the rainwater flows into the inside of the device shell (1) through the top of the device shell (1) naturally, the rainwater first impacts on the two oppositely arranged baffles (8), and in the initial state, the baffle (8) is in a closed state, forming a V-shaped flow guide channel with an angle of 30°-60°, guiding the water flow into the storage tank A (3); S2: the user starts the device through the control panel (2), or the system automatically activates the servo motor (7) according to the rainfall, when the water level of any storage tank reaches the preset upper limit, the control panel (2) controls the servo motor (7) to drive the transmission rod A (14) to rotate, the transmission rod B (17) is driven to rotate synchronously through the bevel gear A (18), the bevel gears B (19) at both ends of the transmission rod B (17) mesh with the rotating shaft rod (4) of the baffle (8), so that the two baffles (8) move relatively, thereby switching the storage tank B (5), and a full load prompt signal is sent, reminding the operation and maintenance personnel to drain water in time; S3: The rainwater that is preliminarily intercepted by the baffle (8) falls into the filter screen A (9), which has a larger filter hole diameter and is used for filtering medium-sized particulate impurities. The rainwater continues to infiltrate into the filter screen B (10), which has even finer filter holes and further removes tiny suspended solids to improve water quality. Meanwhile, the operation of the servo motor (7) drives the filter screen B (10) to repeatedly displace in the vertical direction through the extension block (16). The guide blocks on both sides of the filter screen B (10) slide up and down along the buffer groove (11), and the buffer spring (12) provides a restoring force to ensure stable reciprocating motion of the filter screen B (10). When the filter screen B (10) moves upward and contacts the filter screen A (9), the conical insert block (13) on the surface of the filter screen B (10) is inserted into the filter hole of the filter screen A (9) to flexibly clear blockages, realize self-cleaning function, and the hydrophobic and antibacterial coating on the surface of the filter screen reduces dirt adhesion and inhibits bacterial growth, ensuring long-term operation of the filtering efficiency and water quality safety.

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