Rainwater collection and utilization device

Abstract

Compared with the prior art, the rainwater collection and utilization device disclosed by the invention has the following beneficial effects that rainwater can be collected, filtered and stored, so that crops can be irrigated by utilizing the rainwater in dry seasons, the effect of effectively utilizing the rainwater is achieved, and the rainwater collection and utilization device comprises a rainwater collection surface; the water storage tank is arranged below the rainwater collecting surface and is provided with an inlet; the bottom of the filter box is communicated with the inlet, and a water collecting opening is formed in the top of the filter box, is formed in the rainwater collecting surface and is not higher than the rainwater collecting surface; one end of the liquid pump is communicated with the water storage tank, and the other end is communicated with an irrigation pipe network.

Description

Technical Field

[0001] The invention relates to the technical field of farmland irrigation, and in particular to a rainwater collection and utilization device. Background Art

[0002] In areas with drought or uneven seasonal precipitation, farmland irrigation faces the problem of water shortage. At the same time, rainwater, as a natural resource, is often not fully utilized, especially in the rainy season, when a large amount of rainwater is lost, resulting in a waste of water resources. Therefore, it is of great significance to collect and store rainwater and use it to irrigate crops during droughts. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problem and provide a rainwater collection and utilization device capable of collecting, filtering and storing rainwater.

[0004] To achieve the above purpose, the technical solution of the present invention is: a rainwater collection and utilization device, comprising: Rainwater collection surfaces; A water storage tank is arranged below the rainwater collection surface and is provided with an inlet; The filter box has a bottom connected to the inlet and a top provided with a water collection port, wherein the water collection port is arranged within the rainwater collection surface and is not higher than the rainwater collection surface; A liquid pump has one end connected to the water storage tank and the other end used to connect to the irrigation pipe network.

[0005] Furthermore, the horizontal height from the middle area to the edge area of ​​the rainwater collecting surface gradually increases, and the water collection port is arranged in the middle area of ​​the rainwater collecting surface.

[0006] Furthermore, it also includes: The second filtering component comprises a panel arranged around the water collecting port on the rainwater collecting surface, and water-permeable holes are evenly distributed on the panel.

[0007] Furthermore, a receiving groove is provided around the water collection port on the rainwater collection surface, and the enclosure plate is liftably arranged in the receiving groove.

[0008] Furthermore, a plurality of telescopic rods are evenly spaced apart at the bottom of the accommodating groove, the enclosure plate is connected to the telescopic rods, and the telescopic rods can be telescoped in the vertical direction.

[0009] Furthermore, a plurality of water collecting chambers corresponding to the plurality of telescopic rods are provided below the accommodating groove, a breathable end cover is provided at the upper end of the water collecting chamber, the telescopic rod guide is provided on the water permeable end cover, a first floating part is provided at the lower end of the telescopic rod, and a first water outlet connected to the water tank is provided at the bottom of the water collecting chamber.

[0010] Furthermore, it also includes: A rainwater collection trough is arranged above the rainwater collection surface; The water conduit has an upper end connected to the rainwater collection trough, and a lower end connected to a plurality of water collection chambers.

[0011] Furthermore, it also includes: A second water storage tank is arranged above the rainwater collection surface and below the rainwater collection groove, and a second water inlet is arranged at an upper end of a side wall of the second water storage tank; The second water collecting chamber is arranged on the side wall of the second water storage tank and is connected with the second water inlet. The water guide pipe is connected with the top of the second water collecting chamber. The bottom of the second water collecting chamber is provided with a second water outlet connected with multiple water collecting chambers.

[0012] Furthermore, a third water outlet is provided at the bottom of the second water storage tank, the third water outlet is connected to the plurality of water collecting chambers through a third water delivery pipe, and a control valve is provided at the third water outlet; The bottom of the second water collecting chamber is lower than the second water inlet. A rigid rod is vertically guided at the bottom of the second water collecting chamber. A second floating member is arranged on the top of the rigid rod. The lower end of the rigid rod is connected to the control valve.

[0013] Furthermore, an overflow port is provided at the upper end of the second water storage tank, and the overflow port is connected to the water storage tank.

[0014] A rainwater collection and utilization device disclosed in the present invention has the following beneficial effects compared with the prior art: it can collect, filter and store rainwater, so that rainwater can be used to irrigate crops in the dry season, thereby achieving the effect of effectively utilizing rainwater, comprising a rainwater collection surface; a water storage tank, which is arranged below the rainwater collection surface and is provided with an inlet; a filter box, the bottom of which is connected to the inlet and the top of which is provided with a water collection port, the water collection port being arranged in the rainwater collection surface and not higher than the rainwater collection surface; a liquid pump, one end of which is connected to the water storage tank and the other end of which is used to be connected to an irrigation pipe network. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The overall structure of a rainwater collection and utilization device of the present invention is shown in FIG. Figure 1 .

[0016] Figure 2 The overall structure of a rainwater collection and utilization device of the present invention is shown in FIG. Figure 2 .

[0017] Figure 3 for Figure 2 The figure shows a schematic diagram of the partial enlarged structure of point A in a rainwater collection and utilization device of the present invention.

[0018] Figure 4 The present invention is a schematic diagram of the internal structure of a second water storage tank in a rainwater collection and utilization device.

[0019] Figure 5 The structure of the second filter assembly in a rainwater collection and utilization device of the present invention is shown in FIG. Figure 1 .

[0020] Figure 6 The structure of the second filter assembly in a rainwater collection and utilization device of the present invention is shown in FIG. Figure 2 .

[0021] Figure 7 The present invention is a schematic structural diagram of a hidden isolation plate of a second filter assembly in a rainwater collection and utilization device.

[0022] Figure 8 The present invention is a schematic diagram of the internal structure of a valve body in a rainwater collection and utilization device.

[0023] Fig. 9 for Figure 8 A schematic diagram of the partially enlarged structure of point B in a rainwater collection and utilization device is shown.

[0024] In the figure: 1, rainwater collection surface; 10, water storage tank; 101, inlet; 16, water supply port; 17, second filter element; 18, drain pipe; 2. Filter box; 20. Water collection port; 21. Filter element; 23. Impeller; 230. Impeller shaft; 231. First plate; 232. First permanent magnet; 233. Second permanent magnet; 24. Valve body; 240. First liquid port; 241. First cavity; 242. Conical valve member; 243. Retaining spring; 244. Second liquid port; 245. Columnar cavity; 246. Piston plate; 247. Pump air assembly; 2471. Piston cylinder; 2472. Second piston plate; 2473. First flow channel; 2474. First one-way valve; 2475. Second flow channel; 2476. Second one-way valve; 2477. Third flow channel; 2478. Third one-way valve; 248. Second plate; 2481. Third permanent magnet; 2482. Second rigid rod; 249. Discharge flow channel; 3. Liquid pump; 4. second filter assembly; 41. enclosure; 42. water-permeable hole; 43. receiving groove; 431. isolation plate; 44. telescopic rod; 441. water collecting chamber; 442. water-permeable end cover; 443. first floating member; 445. first water outlet; 446. annular pipe; 447. connecting pipe; 448. first connecting pipe; 449. second connecting pipe; 5. Rainwater collection trough; 51. Water pipe; 6. Second water storage tank; 60. Second water inlet; 601. Overflow port; 6011. Overflow pipe; 602. Third water outlet; 603. Third water delivery pipe; 62. Second water collection chamber; 63. Second water outlet; 630. First water delivery pipe; 7. Control valve; 71. Rigid rod; 72. Second floating member; 73. Valve channel; 74. Valve stem. DETAILED DESCRIPTION

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and thus only show the components related to the present invention.

[0026] Please refer to Figure 1-Figure 3 To achieve the above purpose, the technical solution of the present invention is: a rainwater collection and utilization device, comprising: Rainwater collection surface 1; The water storage tank 10 is arranged below the rainwater collection surface 1 and is provided with an inlet 101; The filter box 2 is connected to the inlet 101 at the bottom and is provided with a water collection port 20 at the top. The water collection port 20 is provided in the rainwater collection surface 1 and is not higher than the rainwater collection surface 1; The liquid pump 3 has one end connected to the water storage tank 10 and the other end connected to the irrigation pipe network.

[0027] Furthermore, the horizontal height from the middle area to the edge area of ​​the rainwater collecting surface 1 gradually increases, and the water collection port 20 is arranged in the middle area of ​​the rainwater collecting surface 1 .

[0028] Specifically, in actual use, the rainwater collection surface 1 can be the ground. The rainwater collection surface is set to be low in the middle area and high around, which is conducive to the collection of rainwater. The water storage tank 10 is set below the ground. In the rainy season, rainwater converges to the water collection port 20 on the rainwater collection surface, and enters the filter box 2 through the water collection port 20. The filter box 2 is provided with a filter element 21. Impurities such as leaves, weeds, and mud in the rainwater can be filtered through the filter element 21. After filtering, the impurities are collected in the water storage tank 10. The accumulated rainwater is collected by the water storage tank. Figure 2 A water supply port 16 is provided at the bottom of the water storage tank, the water supply port 16 is connected to a second filter element 17, the second filter element is connected to a drain pipe 18, the drain pipe 18 is connected to a liquid pump 3, and the liquid pump 3 can be connected to the irrigation network for irrigating the fields. In the dry season, water is pumped by the liquid pump to supply water to the irrigation network in the farmland to irrigate the fields.

[0029] Furthermore, in some embodiments, the water tank 10 is also provided with a water level sensor (not shown in the figure), through which the water level and water storage amount in the water tank can be known in real time, so as to facilitate the overall allocation and use of irrigation water.

[0030] Further, as a preferred embodiment, refer to Figure 2 , Figure 3 , Figure 5-Figure 7 , also includes: The second filtering assembly 4 comprises a panel 41 arranged on the rainwater collecting surface 1 around the water collecting port 20 , and water permeable holes 42 are evenly distributed on the panel 41 .

[0031] Specifically, it is understandable that there will be impurities such as weeds and leaves on the ground. When it rains, the weeds and leaves will float with the rainwater and then be filtered through the filter element 21 in the filter box. Impurities such as weeds and leaves will stay above the filter element 21. When there are too many accumulated leaves and weeds, the filter element 21 will be blocked, hindering the speed of rainwater collection. In order to reduce the rate of weeds and leaves blocking the filter element 21, a fence 41 is set around the water collection port 20. The fence 41 can intercept the weeds and leaves, and the rainwater can flow through the fence 41 through the water permeable holes 42, thereby achieving the effect of filtering the weeds and leaves.

[0032] Furthermore, as a preferred embodiment, a receiving groove 43 is further provided on the rainwater collecting surface 1 around the water collecting port 20 , and the enclosure 41 is movably disposed in the receiving groove 43 .

[0033] Specifically, generally, the rainwater collection surface is the cultivated land, and the rainwater collection surface can also be used to grow crops. As a preferred embodiment, refer to Figure 2 , Figure 3 , Figure 5-Figure 7 A continuous groove is dug around the water collection port 20 on the rainwater collection surface, and two annular isolation plates 431 are arranged in the groove, so that a receiving groove 43 is formed between the two isolation plates. By arranging the enclosure 41 in the receiving groove 43 so that it can be raised and lowered, when it is not raining and no filtering is needed, the enclosure 41 is lowered and stored in the receiving groove 43. At this time, the upper end of the enclosure is below the rainwater collection surface 1. On the one hand, the enclosure can be protected, and on the other hand, the enclosure can be stored without hindering the planting and harvesting of crops on the rainwater collection surface.

[0034] Further, as a specific implementation method, refer to Figure 3 The bottom of the receiving groove 43 is evenly spaced with a plurality of telescopic rods 44, the enclosure 41 is connected to the telescopic rods 44, and the telescopic rods 44 can be extended in the vertical direction. By arranging a plurality of telescopic rods 44 at the bottom of the receiving groove 43, the telescopic rods can be extended in the vertical direction, and the enclosure 41 is lifted and lowered by the extension and retraction of the telescopic rods 44.

[0035] Further, as a specific implementation method, refer to Figure 3 A plurality of water collecting chambers 441 corresponding to a plurality of telescopic rods are arranged below the accommodating groove 43, a water permeable end cover 442 is arranged at the upper end of the water collecting chamber, the guide of the telescopic rod 44 is arranged on the water permeable end cover 442, a first floating member 443 is arranged at the lower end of the telescopic rod, and a first water outlet 445 connected to the water storage tank 10 is arranged at the bottom of the water collecting chamber 441.

[0036] Specifically, the telescopic rod 44 is made of stainless steel, and the vertical guide is arranged on the water-permeable end cover 442. The lower end of the telescopic rod 44 is provided with a first floating member 443. Figure 3 When there is no water in the water collecting chamber 441, the bottom of the first floating member contacts the bottom of the water collecting chamber 441. At this time, the enclosure 41 is in a state of being stored in the receiving groove 43. When it rains, the water on the rainwater collecting surface gathers and flows into the receiving groove 43. Part of the water flows into the water collecting chamber 441 through the permeable end cover 442, and part of the water flows into the water storage tank 10 from the first water outlet 445. When the speed at which water flows into the water collecting chamber is greater than the speed at which water flows out, the water level in the water collecting chamber 441 rises, the first floating member 443 floats up, and pushes the telescopic rod 44 to extend, thereby pushing the enclosure 41 up to intercept impurities such as weeds and leaves. After the rain stops, the water in the water collecting chamber flows into the water storage tank 10 from the first water outlet 445, the water level inside the water collecting chamber decreases, and the telescopic rod retracts under the action of gravity.

[0037] Further, as a preferred embodiment, refer to Figure 1 , also includes: A rainwater collecting trough 5 is arranged above the rainwater collecting surface 1; The water conduit 51 has an upper end connected to the rainwater collecting trough 5 , and a lower end connected to a plurality of water collecting chambers 441 .

[0038] Specifically, it is understandable that the rainwater collected by the rainwater collecting surface may contain impurities such as mud and sand, and the permeable end cover is at risk of being blocked by mud and sand. As a preferred embodiment, the present application is also provided with a rainwater collecting trough 5, which is used to collect rainwater from the top surfaces of buildings such as roofs. The rainwater on the top surfaces of buildings contains less impurities such as mud and sand than the rainwater on the rainwater collecting surface, and in the early stage of rain, the rainwater is mainly absorbed by the rainwater collecting surface, while the rainwater on the top surfaces of the buildings can be collected earlier. At this time, the rainwater collected by the rainwater collecting trough 5 is discharged into the water collection cavity through the water guide pipe 51, so that the telescopic rod is extended to push the enclosure 41 to rise, and the enclosure 41 can be raised before the rainwater is collected on the rainwater collecting surface, so as to achieve a better interception effect on weeds and other debris.

[0039] Further, as a preferred embodiment, refer to Figure 4 , also includes: A second water storage tank 6 is arranged above the rainwater collection surface 1 and below the rainwater collection groove 5, and a second water inlet 60 is arranged at an upper end of a side wall of the second water storage tank; The second water collecting chamber 62 is arranged on the side wall of the second water storage tank 6 and is connected to the second water inlet 60. The water conduit 51 is connected to the top of the second water collecting chamber. The bottom of the second water collecting chamber 62 is provided with a second water outlet 63 connected to multiple water collecting chambers 441.

[0040] Furthermore, a third water outlet 602 is provided at the bottom of the second water storage tank 6 , and the third water outlet 602 is connected to the plurality of water collecting chambers 441 through a third water delivery pipe 603 , and a control valve 7 is provided at the third water outlet 602 .

[0041] Specifically, as a specific implementation method, refer to Figure 5-Figure 7 , including an annular tube 446, the water collecting chamber 441 is collected and connected to the annular tube 446 through a connecting pipe, and a first connecting pipe 448 and a second connecting pipe 449 are provided on the annular tube. The port of the first connecting pipe 448, namely the first water outlet 445, is connected to the water storage tank 10, and the second connecting pipe 449 is connected to the third water supply pipe 603.

[0042] The second water storage tank 6 is arranged on the bracket higher than the rainwater collection surface 1. Figure 4 When rainwater is collected by the rainwater collecting trough 5, it is introduced into the second water collecting chamber 62 through the water guide pipe 51, and part of the water flows out from the second water outlet 63 at the bottom, and is transported to the water collecting chamber 441 through the first water supply pipe 630. When the speed of water entering the second water collecting chamber 62 is greater than the speed of water flowing out, the liquid level in the second water collecting chamber 62 rises, and flows into the second water storage tank 6 from the second water inlet 60 for storage. At this time, the control valve 7 is switched from a closed state to an open state, and the water in the second water storage tank 6 flows out through the third water outlet 602, and is transported to the water collecting chamber 441 through the third water supply pipe 603, thereby accelerating the speed of the liquid level rising in the water collecting chamber, and the first floating member 443 floats up until the upper end of the first floating member abuts against the permeable end cover 442.

[0043] Further, as a specific implementation method, refer to Figure 4 The bottom of the second water collecting chamber 62 is lower than the second water inlet 60 , a rigid rod 71 is vertically guided at the bottom of the second water collecting chamber 62 , a second floating member 72 is arranged on the top of the rigid rod 71 , and the lower end of the rigid rod 71 is connected to the control valve 7 .

[0044] Specifically, the control valve 7 includes a valve channel 73 and a second valve channel arranged perpendicular to the valve channel. A valve stem 74 is arranged in the second valve channel. The valve stem is connected to the rigid rod 71. Figure 4In the state shown, when there is no water in the second water collecting chamber 62, the valve stem 74 is inserted into the second valve channel under the action of gravity of the rigid rod and the second floating member, blocking the valve channel 73. At this time, the control valve is in a closed state. When the water level in the second water collecting chamber 62 rises, the second floating member floats up, pulling the valve stem 74 upward, thereby partially pulling the valve stem 74 out of the second valve channel. At this time, the valve channel 73 is partially opened, and the control valve 7 is in an open state, thereby achieving the purpose of automatic control of the control valve. When the water level in the second water collecting chamber 62 rises when it rains, the control valve can switch from a closed state to an open state, and can automatically switch to a closed state after the water level in the second water collecting chamber 62 drops after the rain stops.

[0045] Further, it can be understood that during rainfall, rainwater collected by the rainwater collection trough 5 enters the second water collection chamber 62. When the control valve 7 is in an open state, rainwater in the second water storage tank 6 continues to flow into the water collection chamber 441, and part of it is discharged into the water storage tank 10 along the first water outlet 445. This process is not conducive to the accumulation of rainwater in the second water storage tank 6. When the rainwater in the second water storage tank is insufficient, the rainwater in the second water storage tank 6 cannot be used to fill the water collection chamber 441 in time during the next rainfall, and the enclosure 41 cannot be lifted up in time. In order to increase the water storage speed in the second water storage tank, as a preferred embodiment, a valve body 24 is provided at the first water outlet 445, and an impeller 23 is provided at the lower end of the filter box 2. The impeller shaft 230 is drivingly connected to the valve body 24. Figure 3 , Figure 8 , Fig. 9The valve body includes an outer shell, a first cavity 241 disposed in the outer shell and a columnar cavity 245 spaced apart from the first cavity, a first liquid port 240 and a second liquid port 244 disposed on the side wall of the first cavity 241, a rod body is provided on the side wall of the first cavity 241, a conical valve member 242 disposed opposite to the first liquid port is disposed at the end of the rod body, a piston plate 246 is disposed in the columnar cavity 245, a retaining compression spring 243 is disposed between the piston plate and the outer side wall of the first cavity, a discharge flow channel 249 is disposed on both sides of the piston plate 246 of the columnar cavity, a pump air assembly 247 is disposed on the side of the piston plate 246 away from the first cavity 241 of the columnar cavity 245, the columnar cavity 245 is coaxially disposed with the impeller shaft 230, and a first plate body is disposed at the end of the impeller shaft 231, the edge position of the first plate is evenly spaced with a first permanent magnet 232 and a second permanent magnet 233, the end guide of the columnar cavity 245 is provided with two second rigid rods 2482, one end of the second rigid rod is drivingly connected to the pump air assembly 247, and the other end is connected to the second plate 248, and the edge position of the second plate is evenly spaced with two third permanent magnets 2481, the magnetic pole directions of the first permanent magnet and the second permanent magnet are oppositely arranged, and the magnetic pole directions of the two third permanent magnets are also oppositely arranged, for example, the N pole of the first permanent magnet is arranged toward the second plate, and the S pole of the second permanent magnet is arranged toward the second plate, the N pole of one third permanent magnet is arranged toward the first plate, and the S pole of the other third permanent magnet is arranged toward the first plate, through this arrangement, When rainwater is collected, rainwater is filtered through the filter element 21 in the filter box and then flows into the water storage tank 10 from the lower end. During the flow, the impeller 23 is driven to rotate. When the impeller rotates, the impeller shaft 230 is driven to rotate, thereby driving the first plate to rotate. When the first plate rotates, the first permanent magnet and the second permanent magnet are driven to reciprocate through the two third permanent magnets, so that the two third permanent magnets can be switched alternately under the action of magnetic attraction and magnetic repulsion, thereby driving the second plate to reciprocate in the direction of approaching and moving away from the first plate, and the pump air assembly is driven to work through the second rigid rod 2482 to pump air into the side of the piston plate in the columnar cavity away from the first cavity. When the speed of the pump air is greater than the air discharge speed of the air discharge channel 249, the air pressure in the columnar cavity increases, pushing the piston plate 246 to move, so that The conical valve member 242 abuts against the first liquid port 240 to block the first liquid port, wherein the first liquid port is connected to the first water outlet 445, and the second liquid port 244 is connected to the water storage tank 10. After the first liquid port is blocked, the water in the water collecting chamber 441 no longer flows out, and rainwater continues to flow into the filter box to continuously drive the impeller to rotate. The conical valve member can continuously close the first liquid port 240 to maintain the water level in the water collecting chamber 441, thereby keeping the first floating member in a floating state and keeping the enclosure 41 in an extended state. After the rain stops, the impeller no longer rotates, and the gas in the first chamber 241 is released. Under the elastic force of the retaining spring 243, the conical valve member leaves the first liquid port 240. At this time, the water in the water collecting chamber 441 can be discharged into the water storage tank through the first liquid port and the second liquid port.The water in the second water collecting chamber 62 is discharged by the first water delivery pipe 630, the second floating member falls, and the control valve 7 is switched to a closed state, thereby reducing the waste of water in the second water storage tank and ensuring that sufficient rainwater can be stored in the second water storage tank.

[0046] Further, as a specific implementation method, refer to Fig. 9 The specific structure of the pump air assembly is as follows: it includes a piston cylinder 2471 and a second piston plate 2472 arranged on the inner wall of the first chamber 241, the second piston plate is connected to the second rigid rod, a first flow channel 2473 arranged on the side wall of the first chamber 241, a first one-way valve 2474 arranged on the first flow channel, the first one-way valve allows the flow medium to flow into the piston cylinder in one direction, a second flow channel 2475 is arranged through the second piston plate, a second one-way valve 2476 is arranged on the second flow channel, the second one-way valve allows the flow medium to flow from the side of the second piston plate close to the first flow channel to the side away from the first flow channel in one direction, a third flow channel 2477 is arranged at the end of the piston cylinder 2471, and the third one-way valve 2478 is arranged in the third flow channel to allow the flow medium to flow out of the piston cylinder in one direction; when the second rigid rod 2482 reciprocates along the axial direction, the second piston plate is driven to reciprocate Movement, when the second piston plate moves in the direction close to the first flow channel, the first one-way valve and the second one-way valve are both closed. At this time, an air pressure difference is generated on both sides of the second piston plate. Under the action of the air pressure difference, the second one-way valve is pushed to open, so that the air on the side of the second piston plate close to the first flow channel flows to the other side through the second flow channel. When the second piston plate moves in the direction away from the first flow channel, the second one-way valve is closed, and the air pressure on the side of the second piston plate close to the first flow channel in the piston cylinder 2471 is reduced. Under the action of negative pressure, the first one-way valve is opened, and the air flow outside the columnar cavity 245 enters the piston cylinder 2471 through the first flow channel. The air pressure on the side of the second piston plate away from the first flow channel increases, and under the action of high pressure, the third one-way valve 2478 is pushed to open, and the high-pressure gas enters the columnar cavity 245 through the third flow channel 2477, and so on and so forth to achieve a pumping effect.

[0047] Further, as a preferred embodiment, refer to Figure 6 The upper end of the second water storage tank 6 is provided with an overflow port 601, and the overflow port 601 is connected to the water storage tank 10. By providing the overflow port, the water level in the second water storage tank 6 can flow into the water storage tank 10 through the overflow port after it is full.

[0048] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A rainwater collection and utilization device, characterized in that: include: Rainwater collection surface (1); A water storage tank (10) is disposed below the rainwater collection surface (1) and is provided with an inlet (101); A filter box (2), the bottom of which is in communication with the inlet (101), and the top of which is provided with a water collection port (20), wherein the water collection port (20) is arranged inside the rainwater collection surface (1) and is not higher than the rainwater collection surface (1); A liquid pump (3) has one end connected to the water storage tank (10) and the other end used to be connected to the irrigation pipe network.

2. A rainwater collection and utilization device according to claim 1, characterized in that: The horizontal height from the middle area to the edge area of ​​the rainwater collection surface (1) gradually increases, and the water collection port (20) is arranged in the middle area of ​​the rainwater collection surface (1).

3. A rainwater collection and utilization device according to claim 1, characterized in that: Also includes: The second filtering assembly (4) comprises a panel (41) arranged on the rainwater collection surface (1) around the water collection port (20), wherein water permeable holes (42) are evenly distributed on the panel (41).

4. A rainwater collection and utilization device according to claim 3, characterized in that: A receiving groove (43) is also provided on the rainwater collection surface (1) around the water collection port (20), and the enclosure plate (41) is arranged in the receiving groove (43) in a liftable manner.

5. A rainwater collection and utilization device according to claim 4, characterized in that: A plurality of telescopic rods (44) are evenly spaced at the bottom of the accommodating groove (43); the enclosure plate (41) is connected to the telescopic rods (44); and the telescopic rods (44) are capable of telescoping in a vertical direction.

6. A rainwater collection and utilization device according to claim 4, characterized in that: A plurality of water collecting chambers (441) corresponding one to one with the plurality of telescopic rods are arranged below the containing groove (43); a water permeable end cover (442) is arranged at the upper end of the water collecting chamber; the telescopic rod (44) is guided on the water permeable end cover (442); a first floating member (443) is arranged at the lower end of the telescopic rod; and a first water outlet (445) communicating with the water storage tank (10) is arranged at the bottom of the water collecting chamber (441).

7. A rainwater collection and utilization device according to claim 6, characterized in that: Also includes: A rainwater collection trough (5) is arranged above the rainwater collection surface (1); The water guide pipe (51) has an upper end portion connected to the rainwater collection tank (5) and a lower end portion connected to a plurality of water collection chambers (441).

8. A rainwater collection and utilization device according to claim 7, characterized in that: Also includes: A second water storage tank (6) is arranged above the rainwater collection surface (1) and below the rainwater collection groove (5), and a second water inlet (60) is arranged at an upper end of a side wall of the second water storage tank; The second water collecting chamber (62) is arranged on the side wall of the second water storage tank (6) and is connected to the second water inlet (60). The water guide pipe (51) is connected to the top of the second water collecting chamber. The bottom of the second water collecting chamber (62) is provided with a second water outlet (63) connected to the plurality of water collecting chambers (441).

9. A rainwater collection and utilization device according to claim 8, characterized in that: A third water outlet (602) is provided at the bottom of the second water storage tank (6); the third water outlet (602) is connected to the plurality of water collecting chambers (441) via a third water delivery pipe (603); a control valve (7) is provided at the third water outlet (602); The bottom of the second water collecting chamber (62) is lower than the second water inlet (60), a rigid rod (71) is vertically guided at the bottom of the second water collecting chamber (62), a second floating member (72) is disposed at the top of the rigid rod (71), and the lower end of the rigid rod (71) is connected to the control valve (7).

10. A rainwater collection and utilization device according to claim 8, characterized in that: An overflow port (601) is provided at the upper end of the second water storage tank (6), and the overflow port (601) is connected to the water storage tank (10).

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