Rainwater collection and utilization device with water-sediment separation function

By designing a rainwater collection device that automatically passes through the filter, the problem of manual cleaning when the filter is blocked is solved, and automatic water-sand separation and rainwater collection are realized, improving the working efficiency of the device.

CN120575622AInactive Publication Date: 2025-09-02NANTONG JINYUAN ENVIRONMENTAL PROTECTION EQUIP CO LTD
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Patent Information

Application Number
CN202511039222.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-28
Publication Date
2025-09-02
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing rainwater collection device needs to be manually cleaned when the filter is blocked and cannot be automatically unblocked, resulting in the device being unable to continue working, affecting the rainwater collection efficiency.

Method used

A rainwater collection and utilization device with water-sand separation function is designed, including filter mesh components, auxiliary components and trigger components. When the filter mesh is blocked, the trigger component drives the auxiliary components to automatically pass through the filter mesh, and automatically clean the filter mesh through rectangular frames and hook structures.

Benefits of technology

It realizes automatic unblocking without manual intervention when the filter is blocked, extends the use time of the filter, improves rainwater collection efficiency, and avoids the need for mid-range shutdown and cleaning.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a rainwater collection and utilization device with a water-sediment separation function, which comprises a rainwater collection box, the upper end of the rainwater collection box is provided with an inlet communicated with the interior of the rainwater collection box, the inlet is internally provided with a filter screen assembly, and the outer side of the rainwater collection box is provided with an auxiliary assembly. A trigger assembly is arranged in the rainwater collecting box, when blockage occurs in the filter screen assembly, the trigger assembly induces the blockage and then drives the auxiliary assembly to dredge the filter screen assembly, and the duration time of filtering silt by the filter screens can be prolonged through the arrangement of three layers of filter screens in the filter screen assembly and the cooperation of the auxiliary assembly. The device can be used in rainfall for a long time, manual replacement and cleaning due to blockage of the filter screen in the rainfall process are not needed, and therefore the rainwater collection efficiency can be improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of rainwater collection and utilization, and in particular to a rainwater collection and utilization device with a water-sand separation function. Background Art

[0002] Rainwater recycling refers to the use of rainwater recycling equipment to collect natural precipitation, and then introduce it into the garden irrigation system to water the garden vegetation. This technology can effectively utilize rainwater resources, reduce environmental pollution, improve the ecological environment quality of the city, and realize the recycling of water resources. When recycling rainwater, a filter net will be used to separate water and sand to remove the sediment in the rainwater, so as to facilitate the recycling of rainwater for irrigation. However, during long periods of rainfall, the filter net will become clogged due to filtering too much sediment and will not be able to continue to separate water and sand, resulting in waste. At this time, if it is not replaced and cleaned manually, the device will not be able to continue working. Summary of the Invention

[0003] (1) Technical problems to be solved The purpose of the present invention is to overcome the shortcomings of the existing technology, adapt to actual needs, and provide a rainwater collection and utilization device that can automatically clear the filter without manual work when the filter is blocked, so that the filter can continue to work, so as to solve the above technical problems.

[0004] (2) Technical solution In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is: A rainwater collection and utilization device with water-sand separation function includes a rainwater collection box, an upper end of the rainwater collection box has an inlet connected to the rainwater collection box, a filter assembly is provided in the inlet, an auxiliary assembly is provided on the outside of the rainwater collection box, and a trigger assembly is provided in the rainwater collection box. When blockage occurs in the filter assembly, the trigger assembly will sense it and then drive the auxiliary assembly to clear the filter assembly.

[0005] The filter screen assembly includes a rectangular frame that can move back and forth in the rainwater collection box, and when the rectangular frame moves, the outer peripheral wall of the rectangular frame and the inner peripheral wall of the rainwater collection box are always kept sealed; three rectangular placement racks are evenly distributed in the thickness direction of the rectangular frame, and a rectangular rubber frame is fixedly provided on each rectangular placement rack. The inner wall of the rectangular rubber frame is provided with a card slot, and the card slots provided on the inner wall of the rectangular rubber frame are interconnected to form a rectangular frame shape. A filter screen is provided in the middle of the rectangular rubber frame, and the side edges of the filter screen are all inserted into the card slots. The filter screen located on the uppermost side is provided with a first hook assembly, and the filter screen located in the middle is provided with a second hook assembly.

[0006] The auxiliary component includes a support rod fixedly arranged on the side of the rainwater collection box, a mounting hole is provided on the support rod, a first rotating shaft is rotatably arranged in the mounting hole, a rotating disk is fixedly arranged on the first rotating shaft, two push rods are evenly distributed along the circumferential direction on the outer circumference of the rotating disk, and a pull rod is fixedly arranged on each push rod.

[0007] The trigger assembly includes a positioning frame fixedly arranged on the inner wall of the rainwater collection box, a return spring is fixedly arranged at the four corners of the positioning frame and the rectangular frame, a straight rod is fixedly arranged on the top surface of the rectangular frame, a first contact piece is fixedly arranged on the straight rod, and a second contact piece is fixedly arranged on the rainwater collection box, and an internal hollow working box is fixedly arranged on the support rod, one end of the first rotating shaft is rotatably inserted into the working box and a gear shaft is fixedly arranged, a rack is provided in the working box, and an electric track corresponding to the rack is provided on the top of the working box, and the rack is fixedly connected to the moving end of the electric track, and a controller is provided on the electric track. When the first contact piece contacts the second contact piece for the first time, the controller will receive a signal to start the electric track, drive the rack to move and let the gear shaft rotate 180 degrees. When the first contact piece contacts the second contact piece for the second time, the controller will receive a signal to start the electric track, drive the rack to move and let the gear shaft rotate 180 degrees again.

[0008] The first hook assembly includes a first vertical pole fixedly arranged on the uppermost filter screen, a first hook fixedly arranged on the upper end of the first vertical pole, a first mounting groove provided on the first hook, a second rotating shaft rotatably provided on the first mounting groove, a first baffle fixedly arranged on the second rotating shaft, one side of the first baffle is supported by the side wall of the first mounting groove, so that the first baffle can only rotate toward the inside of the first hook, and a first torsion spring is sleeved on the second rotating shaft.

[0009] The second hook assembly includes two mounting plates fixedly arranged on the filter screen located in the middle, a third rotating shaft is rotatably arranged between the two mounting plates, a second vertical rod is fixedly arranged on the third rotating shaft, a second hook is fixedly arranged on the second vertical rod, a second mounting slot is provided on the second hook, a fourth rotating shaft is rotatably arranged on the second mounting slot, a second blocking rod is fixedly arranged on the fourth rotating shaft, one side of the second blocking rod is blocked by the side wall of the second mounting slot, so that the second blocking rod can only rotate toward the inside of the second hook, a second torsion spring is sleeved on the third rotating shaft, and a third torsion spring is sleeved on the fourth rotating shaft.

[0010] The mesh sizes of the filter screens on the three rectangular placement racks are the same.

[0011] A limit block is fixedly provided on one end of the pull rod away from the push rod.

[0012] (3) Beneficial effects: The three-layer filter setting and auxiliary components in the filter assembly can extend the duration of the filter to filter sediment, and can be used during long periods of rainfall. There is no need to manually replace and clean the filter due to clogging in the middle of rainfall, thereby improving the efficiency of rainwater collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of a rainwater collection and utilization device with water-sand separation function according to the present invention; Figure 2 This is a left-side structural schematic diagram of a rainwater collection and utilization device with water-sand separation function according to the present invention; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in FIG; Figure 4 for Figure 3 Enlarged view of point B in FIG. Figure 5 for Figure 4 Enlarged view of point C in the figure; Figure 6 for Figure 4 The enlarged view of point D in the figure; Figure 7 for Figure 2 Schematic diagram of the cross-sectional structure at EE in FIG; Figure 8 This is a schematic diagram of the internal structure of a working box of a rainwater collection and utilization device with water-sand separation function according to the present invention; Figure 9 for Figure 8 The enlarged view of point F in the figure; Figure 10 Schematic diagram of the three-dimensional structure of the filter assembly; Figure 11 It is a schematic diagram of the three-dimensional structure of the filter assembly after being cut; Figure 12 for Figure 11 Enlarged view of point F in . DETAILED DESCRIPTION

[0014] The following is combined with Figure 1-12 The present invention is further described with examples: A rainwater collection and utilization device with water-sand separation function includes a rainwater collection box 1. The upper end of the rainwater collection box 1 has an inlet 2 connected to the rainwater collection box 1. A filter screen assembly is provided in the inlet 2. An auxiliary assembly is provided on the outside of the rainwater collection box 1. A trigger assembly is provided in the rainwater collection box 1. When blockage occurs in the filter screen assembly, the trigger assembly will sense it and then drive the auxiliary assembly to clear the filter screen assembly.

[0015] The filter screen assembly includes a rectangular frame 21 that can move back and forth in the rainwater collection box 1, and when the rectangular frame 21 moves, the outer peripheral wall of the rectangular frame 21 and the inner peripheral wall of the rainwater collection box 1 are always kept sealed; three rectangular placement racks 22 are evenly distributed in the thickness direction of the rectangular frame 21, and a rectangular rubber frame 23 is fixedly provided on each rectangular placement rack 22. The inner wall of the rectangular rubber frame 23 is provided with a card groove 24, and the card grooves 24 provided on the inner wall of the rectangular rubber frame 23 are interconnected to form a rectangular frame shape. A filter screen 25 is provided in the middle of the rectangular rubber frame 23, and the side edges of the filter screen 25 are all inserted into the card grooves 24. The filter screen 25 located on the uppermost side is provided with a first hook assembly, and the filter screen 25 located in the middle is provided with a second hook assembly.

[0016] The auxiliary component includes a support rod 50 fixedly arranged on the side of the rainwater collection box 1, and a mounting hole is provided on the support rod 50. A first rotating shaft 51 is rotatably provided in the mounting hole. A rotating disk 52 is fixedly provided on the first rotating shaft 51. Two push rods 53 are evenly distributed on the outer peripheral surface of the rotating disk 52 in the circumferential direction, and a pull rod 54 is fixedly provided on each push rod 53.

[0017] The trigger assembly includes a positioning frame 200 fixedly arranged on the inner wall of the rainwater collection box 1, and a return spring 201 is fixedly arranged at the four corners of the positioning frame 200 and the rectangular frame 21. A straight rod 40 is fixedly arranged on the top surface of the rectangular frame 21, and a first contact piece 41 is fixedly arranged on the straight rod 40. A second contact piece 42 is fixedly arranged on the rainwater collection box 1, and an internal hollow working box 60 is fixedly arranged on the support rod 50. One end of the first rotating shaft 51 can be rotatably inserted into the working box 60 and is fixedly provided with a gear shaft 61. The working box 60 is provided with A rack 62, an electric track 63 corresponding to the rack 62 is provided on the top of the working box 60, the rack 62 is fixedly connected to the moving end of the electric track 63, and a controller is provided on the electric track 63. When the first contact piece 41 and the second contact piece 42 contact for the first time, the controller will receive a signal to start the electric track 63, drive the rack 62 to move and let the gear shaft 61 rotate 180°. When the first contact piece 41 and the second contact piece 42 contact for the second time, the controller will receive a signal to start the electric track 63, drive the rack 62 to move and let the gear shaft 61 rotate 180° again.

[0018] The first hook assembly includes a first vertical rod 80 fixedly arranged on the uppermost filter screen 25, a first hook 81 fixedly arranged on the upper end of the first vertical rod, a first mounting slot 82 provided on the first hook 81, a second rotating shaft 83 rotatably provided on the first mounting slot 82, a first baffle 84 fixedly provided on the second rotating shaft 83, one side of the first baffle 84 is supported by the side wall of the first mounting slot 82, so that the first baffle 84 can only rotate toward the inside of the first hook 81, a first torsion spring is sleeved on the second rotating shaft 83, one end of the first torsion spring is fixedly connected to the mounting slot 82, and the other end is fixedly connected to the second rotating shaft 83.

[0019] The second hook assembly includes two mounting plates 90 fixedly mounted on the filter screen 25 located in the middle, a third rotation axis 91 is rotatably arranged between the two mounting plates 90, and a second vertical rod 92 is fixedly arranged on the third rotation axis 91 (the length of the second vertical rod 92 = the length of the first vertical rod 80 + the vertical distance between the top filter screen and the filter screen located in the middle, so that after the second vertical rod 92 is rotated to the vertical direction, the height position of the second hook 93 is the same as the height position of the original first hook 81, and then when the filter screen 25 located in the middle needs to be removed, the pull rod 54 can be just buckled into the second hook 93), the second vertical rod 92 is fixedly provided with The second hook 93 is provided with a second mounting slot 94, and a fourth rotating shaft 95 is rotatably provided on the second mounting slot 94. A second shift lever 96 is fixedly provided on the fourth rotating shaft 95, and one side of the second shift lever 96 is blocked by the side wall of the second mounting slot 94, so that the second shift lever 96 can only rotate toward the inside of the second hook 93. A second torsion spring is sleeved on the third rotating shaft 91, and one end of the second torsion spring is fixedly connected to the mounting plate 90, and the other end is fixedly connected to the third rotating shaft 91. A third torsion spring is sleeved on the fourth rotating shaft 95, and one end of the third torsion spring is fixedly connected to the second mounting slot 94, and the other end is fixedly connected to the fourth rotating shaft 95.

[0020] The mesh sizes of the filter screens 25 on the three rectangular placement racks 22 are the same.

[0021] A limit block 100 is fixedly provided on one end of the pull rod 54 away from the push rod 53. The setting of the limit block can prevent the first hook or the second hook from coming off the pull rod 54.

[0022] The working principle of the present invention includes the following process: When rainwater falls into the filter assembly in the rainwater collection box 1, the sediment will be filtered and remain on the filter 25, and the rainwater will enter the rainwater collection box 1. When the top filter 25 is blocked by sediment, the rainwater will not be able to pass through the top filter 25 into the rainwater collection box 1. At this time, the rainwater will accumulate on the top filter 25. Then, when the rainwater accumulates to a preset amount, the gravity will cause the rectangular frame 21 and the filter 25 on the top to overcome the return spring 201 and move downward. The straight rod 40 will move downward with the rectangular frame 21. During the downward movement, when the first contact piece 41 and the second contact piece 42 are in contact, a signal will be sent. When the controller receives the signal that the first contact piece 41 and the second contact piece 42 are in contact for the first time, it will drive the electric The track 63 moves, allowing the electric track 63 to drive the rack 62 to move a preset distance, and the rack 62 will drive the gear shaft 61 to rotate 180°. The gear shaft 61 will bring the push rod 53 and the pull rod 54 located below to rotate close to the first hook 81, so that the pull rod 54 will push the first blocking rod 84 and then enter the first hook 81. After that, the first blocking rod 84 will be reset under the action of the first torsion spring, buckling the pull rod 54 in the first hook 81, and then as the pull rod 54 continues to rotate upward, it will pull the first hook 81 and the top filter screen, thereby pulling the top filter screen 25 out of the rectangular rubber frame 23. The pulled out top filter screen will rotate 180° with the pull rod 54 and come to the upper right corner of the rainwater collection box 1 (with Figure 1 The left and right directions of the device are taken as the reference), and the mud and sand on the uppermost filter screen that are not stuck in the hole will be thrown to the periphery of the device as much as possible after being quickly pulled (because the pull rod 54 is only set in the first hook 81, when the uppermost filter screen is pulled out of the rectangular rubber frame 23, the left side of the uppermost filter screen will tend to flip downward with the pull rod 54 as the rotation center because the left side of the uppermost filter screen is heavy, and then the force of the pull rod 54 on the uppermost filter screen to pull the uppermost filter screen can better throw the mud and sand that are not stuck in the hole to the left side of the rainwater collection box 1, and the left side mentioned here is Figure 1 The filter screen in the middle will be exposed to continue filtering sediment and rainwater; When the filter screen in the middle is clogged with sediment again, rainwater will accumulate in the filter screen in the middle again. When the rainwater accumulates to a preset amount, gravity will cause the rectangular frame 21 and the filter screen 25 to overcome the return spring 201 and move downward, and the straight rod 40 will move downward with the rectangular frame 21. In the process of moving downward, when the first contact piece 41 and the second contact piece 42 are in contact for the first time, a signal will be sent, and when the controller receives the signal that the first contact piece 41 and the second contact piece 42 are in contact for the second time, it will drive the electric track 63 to move again, allowing the electric track 63 to continue to move a preset distance with the rack 62, and the rack 62 will drive the gear shaft 61 to rotate 180 degrees again, and the gear shaft 61 will drive the push rod 53 and the pull rod 54 located at the bottom at this time to approach the second hook 93. Rotation (because after the filter screen 25 on the top layer is removed, the second hook 93 will be reset under the action of the second torsion spring after being no longer supported by the filter screen 25 on the top layer, so that the second hook 93 rotates from the horizontal state to the vertical state), so that the pull rod 54 will push the second blocking rod 96 and then enter the second hook 93. Thereafter, the second blocking rod 96 will be reset under the action of the third torsion spring, buckling the pull rod 54 in the second hook 93. Then, as the pull rod 54 continues to rotate upward, it will pull the second hook 93 and the middle filter screen 25, thereby pulling the middle filter screen 25 out of the rectangular rubber frame 23. The pulled out middle filter screen 25 will rotate 180° with the pull rod 54 and come to the upper right corner of the rainwater collection box 1 (with Figure 1 The left and right directions of the device are taken as the reference), and the mud and sand on the middle filter screen 25 that are not stuck in the hole will be thrown to the periphery of the device as much as possible after being quickly pulled (when the middle filter screen 25 is pulled out by the pull rod 54, because the left side of the filter screen 25 is heavy, the left side will tend to flip downward with the third rotation axis 91 as the rotation center, and then the force of the pull rod 54 on the middle filter screen will be used to better throw the mud and sand that are not stuck in the hole to the left side of the rainwater collection box 1. The left side here is Figure 1 The orientation is taken as a reference), so that the filter at the bottom layer will be exposed and then the sediment and rainwater will be filtered, thereby extending the service life of the filter assembly and being able to be used in long periods of rainfall. There is no need to manually replace and clean the filter due to clogging in the middle of rainfall, thereby improving the efficiency of rainwater collection.

[0023] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0025] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, article, or apparatus / device.

[0026] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A rainwater collection and utilization device with water-sand separation function, characterized by: The invention comprises a rainwater collection box (1), wherein the upper end of the rainwater collection box (1) is provided with an inlet (2) connected to the rainwater collection box (1), a filter assembly is provided in the inlet (2), an auxiliary assembly is provided on the outside of the rainwater collection box (1), and a trigger assembly is provided in the rainwater collection box (1). When a blockage occurs in the filter assembly, the trigger assembly will sense it and then drive the auxiliary assembly to clear the filter assembly.

2. The rainwater collection and utilization device with water-sand separation function according to claim 1, characterized in that: The filter screen assembly comprises a rectangular frame (21) that can reciprocate in the rainwater collection box (1), and when the rectangular frame (21) moves, the outer peripheral wall of the rectangular frame (21) and the inner peripheral wall of the rainwater collection box (1) are always kept sealed; three rectangular placement racks (22) are evenly distributed in the thickness direction in the rectangular frame (21), and a rectangular rubber frame (23) is fixedly arranged on each rectangular placement rack (22); the inner wall of the rectangular rubber frame (23) is provided with a card slot (24), and the card slots (24) provided on the inner wall of the rectangular rubber frame (23) are interconnected to form a rectangular frame shape; a filter screen (25) is provided in the middle of the rectangular rubber frame (23), and the side edges of the filter screen (25) are all inserted into the card slots (24); the filter screen (25) located at the uppermost side is provided with a first hook assembly, and the filter screen (25) located in the middle is provided with a second hook assembly.

3. The rainwater collection and utilization device with water-sand separation function according to claim 1, characterized in that: The auxiliary component comprises a support rod (50) fixedly arranged on the side of the rainwater collection box (1), the support rod (50) being provided with a mounting hole, a first rotating shaft (51) being rotatably arranged in the mounting hole, a rotating disk (52) being fixedly arranged on the first rotating shaft (51), two push rods (53) being evenly distributed along the circumferential direction on the outer peripheral surface of the rotating disk (52), and a pull rod (54) being fixedly arranged on each push rod (53).

4. The rainwater collection and utilization device with water-sand separation function according to claim 1, characterized in that: The trigger assembly comprises a positioning frame (200) fixedly arranged on the inner wall of the rainwater collection box (1); a return spring (201) is fixedly arranged at the four corners of the positioning frame (200) and the rectangular frame (21); a straight rod (40) is fixedly arranged on the top surface of the rectangular frame (21); a first contact piece (41) is fixedly arranged on the straight rod (40); a second contact piece (42) is fixedly arranged on the rainwater collection box (1); a working box (60) with a hollow interior is fixedly arranged on the support rod (50); one end of the first rotating shaft (51) is rotatably inserted into the working box (60) and fixedly provided with a gear shaft (61); a gear shaft (61) is provided in the working box (60) The top of the working box (60) is provided with an electric track (63) corresponding to the rack (62), the rack (62) is fixedly connected to the moving end of the electric track (63), and a controller is provided on the electric track (63). When the first contact piece (41) and the second contact piece (42) are in contact for the first time, the controller receives a signal to start the electric track (63), drive the rack (62) to move and allow the gear shaft (61) to rotate (180) degrees. When the first contact piece (41) and the second contact piece (42) are in contact for the second time, the controller receives a signal to start the electric track (63), drive the rack (62) to move and allow the gear shaft (61) to rotate (180) degrees again.

5. The rainwater collection and utilization device with water-sand separation function according to claim 2, characterized in that: The first hook assembly comprises a first vertical rod (80) fixedly arranged on the uppermost filter screen (25), a first hook (81) fixedly arranged on the upper end of the first vertical rod, a first mounting groove (82) arranged on the first hook (81), a second rotating shaft (83) rotatably arranged on the first mounting groove (82), a first blocking rod (84) fixedly arranged on the second rotating shaft (83), one side of the first blocking rod (84) is supported by the side wall of the first mounting groove (82), so that the first blocking rod (84) can only rotate toward the inside of the first hook (81), and a first torsion spring is sleeved on the second rotating shaft (83).

6. The rainwater collection and utilization device with water-sand separation function according to claim 2, characterized in that: The second hook assembly includes two mounting plates (90) fixedly mounted on the filter screen (25) located in the middle, a third rotating shaft (91) is rotatably mounted between the two mounting plates (90), a second vertical rod (92) is fixedly mounted on the third rotating shaft (91), a second hook (93) is fixedly mounted on the second vertical rod (92), a second mounting groove (94) is provided on the second hook (93), a fourth rotating shaft (95) is rotatably mounted on the second mounting groove (94), a second stop rod (96) is fixedly mounted on the fourth rotating shaft (95), one side of the second stop rod (96) is blocked by the side wall of the second mounting groove (94), so that the second stop rod (96) can only rotate toward the inside of the second hook (93), a second torsion spring is sleeved on the three rotating shafts (91), and a third torsion spring is sleeved on the fourth rotating shaft (95).

7. The rainwater collection and utilization device with water-sand separation function according to claim 2, characterized in that: The mesh sizes of the filter screens (25) located on the three rectangular placement racks (22) are the same.

8. The rainwater collection and utilization device with water-sand separation function according to claim 3, characterized in that: A limiting block (100) is fixedly provided on one end of the pull rod (54) away from the push rod (53).