Building rainwater collecting device and method capable of automatically retaining, purifying and storing rainwater

Abstract

The invention discloses a building rainwater collection device and method capable of automatically retaining, purifying and storing rainwater, and relates to the technical field of rainwater collection, the building rainwater collection device comprises a collection pool, the inner wall of the collection pool is fixedly connected with a separation net, the separation net divides an inner cavity of the collection pool into a water storage cavity and a clear water cavity, and a water collection assembly is arranged on the upper portion of the clear water cavity; a water outlet assembly and a sludge discharge assembly are arranged at the upper part of the water storage cavity; the water collecting assembly comprises a water collecting barrel, and an adjusting piece used for adjusting the water collecting flow is arranged in the middle of the inner wall of the water collecting barrel. According to the overall collecting device, rainwater is stored by arranging the collecting pool, and the functions of collecting, discharging and utilizing the rainwater and discharging sludge are achieved through cooperation of the water collecting assembly, the water outlet assembly, the sludge discharging assembly and other structures arranged on the collecting pool; the device is high in overall practicability and good in functionality.

Description

Technical Field

[0001] The invention relates to the technical field of rainwater collection, and in particular to a building rainwater collection device and a collection method for automatically intercepting, purifying and storing rainwater. Background Art

[0002] As a natural water resource, rainwater can be used in non-drinking areas such as greening, car washing, and flushing toilets after being purified by the rainwater collection system, thus maximizing the use of water resources. In heavy rain, the rainwater collection system can quickly collect rainwater and reduce the impact of rainwater on the drainage system, thereby effectively preventing urban waterlogging and alleviating urban drainage pressure.

[0003] Existing rainwater collection devices often only use pipeline structures to guide rainwater to the collection pool for storage. When needed, water pumps and other devices are used to take water. The overall structure has a single function and is inconvenient to use. In addition, there is a lack of detection and processing capabilities for rainwater. When not used for a long time, rainwater deposition makes it too polluted and unusable. When the collection pool is full, it cannot be discharged and cleaned in time. Summary of the invention

[0004] The purpose of the present invention is to provide a rainwater collection device and collection method for buildings that automatically intercepts, purifies and stores rainwater, so as to solve the problem that the collection devices of the prior art proposed in the above background technology can only simply divert and store water, have a single structural functionality, and are inconvenient to use.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A rainwater collection device for a building that automatically intercepts, purifies and stores rainwater comprises a collection pool, a partition net is fixedly connected to the inner wall of the collection pool, the partition net divides the inner cavity of the collection pool into a water storage cavity and a clean water cavity, a water collection component is arranged on the upper part of the clean water cavity, a water outlet component and a mud discharge component are arranged on the upper part of the water storage cavity, a discharge pipeline is arranged on one side of the mud discharge component, a discarding device and a reflux component for discharging sludge are arranged in the middle of the discharge pipeline; the water collection component comprises a water collection cylinder, an adjusting member for adjusting the water collection flow is arranged in the middle of the inner wall of the water collection cylinder, a diversion pipe is fixedly connected to one side of the water collection cylinder, one end of the diversion pipe is connected to the reflux component, a plurality of water diversion pipes are fixedly connected to the middle of the diversion pipe, and one end of the water diversion pipe is fixedly connected to the interception and storage component.

[0007] As a further solution of the present invention: the adjusting member includes a rotating toothed disc, the bottom of the rotating toothed disc is fixedly connected to a mounting rod, the bottom of the mounting rod is fixedly connected to a plurality of closing plates, a plurality of supporting plates are fixedly installed on the middle part of the inner wall of the water collecting barrel, a water collecting port is arranged between the plurality of supporting plates, and the size of the closing plate is larger than the size of the water collecting port; an adjusting motor is arranged on one side of the rotating toothed disc, an adjusting gear is fixedly connected to the output end of the adjusting motor, and one side of the adjusting gear is meshedly connected to the rotating toothed disc; the connection port of the diverter pipe and the water collecting barrel is located higher than the height of the closing plate.

[0008] As a further solution of the present invention: the retaining assembly includes a retaining plate, the bottom of which is fixedly connected to a mounting plate, the top surface of the retaining plate is inclined, a water-permeable groove is provided on the top of the retaining plate, and the bottom of the retaining plate is fixedly connected to a water diversion pipe.

[0009] As a further solution of the present invention: the top of the inner wall of the retaining plate is slidably connected with an inner lining plate, a plurality of through openings are opened in the middle of the inner lining plate, and a push-pull block is fixedly connected to one side of the top of the inner lining plate.

[0010] As a further solution of the present invention: the discarding device includes an outer cover plate, the bottom of the outer cover plate is fixedly connected with a docking sleeve, the bottom of the docking sleeve is fixedly connected with a filter box, the middle of the inner wall of the filter box is fixedly connected with a filter plate, the discharge pipeline includes segment one and segment two, one end of the segment one is bent downward and passes through the filter plate, one end of the segment two is fixedly connected to one end of the docking sleeve, a discarding pump is fixedly installed on the bottom of the inner wall of the filter box, the output end of the discarding pump is fixedly connected with a discarding pipe, and the top side of the filter box is fixedly connected to the docking sleeve through a filter pipe.

[0011] As a further solution of the present invention: the reflux assembly includes a mounting sleeve, a reflux sleeve is fixedly mounted on the bottom of the mounting sleeve, a guide table is fixedly connected to the top of the reflux sleeve, a filter is fixedly connected to the top of the guide table, a partition plate is fixedly connected to the bottom of the guide table, a reflux water pump is fixedly mounted on the bottom of the partition plate, and a reflux pipe is fixedly connected to the output end of the reflux water pump.

[0012] As a further solution of the present invention: one end of the return pipe is fixedly connected to a cleaning piece, the cleaning piece is arranged inside the collection tank, the cleaning piece includes a cleaning frame, a direction adjustment motor is fixedly installed on one side of the inner wall of the cleaning frame, the output end of the direction adjustment motor is fixedly connected to a direction adjustment sleeve, one side of the direction adjustment sleeve is provided with a water supply trough, and the other side of the direction adjustment sleeve is fixedly connected to the return pipe.

[0013] As a further solution of the present invention: a water inlet well is arranged on one side of the water collecting assembly, the water inlet well is connected with the inside of the water collecting cylinder through a water inlet pipe, a water inlet pump is fixedly installed on the bottom of the inner wall of the water collecting cylinder, and the output end of the water inlet pump is connected with the clean water chamber.

[0014] As a further solution of the present invention: the water outlet assembly includes a water outlet cylinder, a water outlet pump is fixedly installed on the bottom of the inner wall of the water outlet cylinder, and a plurality of water outlet pipes are fixedly connected to the output end of the water outlet pump.

[0015] As a further solution of the present invention: the mud discharge assembly includes a mud discharge cylinder, a mud discharge pump is fixedly installed at the bottom of the inner wall of the mud discharge cylinder, an input end of the mud discharge pump is fixedly connected to a mud discharge pipe, and the bottom of the mud discharge pipe extends to the bottom of the water storage chamber.

[0016] A method for collecting rainwater from a building by automatically intercepting, purifying and storing rainwater comprises the following steps:

[0017] Step 1: Collect rainwater through the water inlet well and the interception and storage components and send it to the collection pool;

[0018] Step 2: When water is needed, start the water outlet pump to discharge the water in the collection pool through the water outlet pipe;

[0019] Step 3: Start the mud pump to send the muddy water at the bottom of the collection pool to the discarding device, which will filter and discharge it;

[0020] Step 4: The water flow capacity of the water inlet well is adjusted by the adjusting member, and the water that cannot pass through is sent to the return flow assembly through the diversion pipe;

[0021] Step 5: The reflux component discharges or returns the water to the collection tank.

[0022] Compared with the prior art, the invention has the following beneficial effects: the integrated collection device of the invention stores rainwater by setting up a collection pool, and cooperates with the water collection component, water outlet component, mud discharge component and other structures arranged thereon to respectively realize the functions of collecting rainwater, discharging and utilizing it, and discharging sludge; the overall device has strong practicality and good functionality;

[0023] On the basis of realizing the above functions, in order to cope with the need of collecting rainwater when the collection pool is full, the present invention sets an adjustment member, uses the adjustment motor and other structures to drive the closing plate to rotate, realizes the opening and closing of the water collection port, and then realizes the control of the water inlet flux of the water collection cylinder, so as to reduce or stop the water inlet operation to the collection pool when necessary; to meet the working and use needs under different conditions;

[0024] The present invention collects water flows on the downslope surfaces of the building or where water flows converge and flow, by dispersing the interception and storage components at multiple locations of the building, so as to meet the needs of collecting rainwater at multiple locations of the building and improve the rainwater collection capacity of the device; by arranging a slidable inner lining plate in the interception and storage component, the push-pull block is used to drive the inner lining plate to move, so that the opening and the water-permeable groove are misaligned, so as to realize dust-proof protection of the inner cavity of the interception and storage plate when rainwater is not collected;

[0025] The present invention provides a reflux component to return relatively clean rainwater to the bottom of the collection pool, thereby impacting the sludge on the bottom of the collection pool and causing it to float, which is convenient for the sludge discharge operation of the sludge pump and realizes the replacement of the water body in the collection pool, that is, replacing the water body with more sludge at the bottom of the collection pool with relatively clean water, thereby improving the cleanliness of the stored rainwater; the direction of the water delivery trough is adjusted by driving the direction adjustment sleeve to rotate through the direction adjustment motor to meet the flushing of a larger area of ​​the bottom of the collection pool; the impact force of the water flow is increased, and the ability to clean the sludge is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the layout of the rainwater collection device of the present invention;

[0027] Figure 2 is a cross-sectional view of the water collection assembly of the present invention;

[0028] Figure 3 It is a schematic diagram of the position distribution of the supporting plate of the present invention;

[0029] Figure 4 is a cross-sectional view of a flow abandonment device of the present invention;

[0030] Figure 5 A three-dimensional diagram of the impoundment assembly of the present invention;

[0031] Figure 6 A three-dimensional diagram of the inner lining plate of the present invention;

[0032] Figure 7 is a cross-sectional view of the reflux assembly of the present invention;

[0033] Figure 8 It is a cross-sectional view of the cleaning member of the present invention.

[0034] In the figure: 1, collecting tank; 2, separation net; 3, water collection component; 301, top cover; 302, water collection cylinder; 303, rotating gear disc; 304, adjusting motor; 305, adjusting gear; 306, mounting rod; 307, closing plate; 308, supporting plate; 309, water collection port; 4, water inlet well; 5, interception component; 501, mounting plate; 502, interception plate; 503, water diversion pipe; 504, water permeable groove; 505, push-pull block; 506, through port; 507, lining plate; 6, discard flow device; 601, filter box; 602, filter plate; 603, discard flow pump; 604, discard flow pipe; 605, filter pipe; 606, docking sleeve; 7, discharge pipeline; 701, segment one; 702, segment two; 8, reflux assembly; 801, installation sleeve; 802, reflux sleeve; 803, filter screen; 804, partition plate; 805, reflux pump; 806, reflux pipe; 807, guide table; 808, installation sleeve; 809, detector; 810, cleaning rack; 811, adjustment sleeve; 812, water delivery trough; 9, safety diversion well; 10, water inlet pump; 11, water outlet pump; 12, mud pump; 13, water outlet pipe; 14, total amount monitor; 15, operation station. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1 In an embodiment of the present invention, a rainwater collection device for a building that automatically intercepts, purifies and stores rainwater is provided. When in use, the device is disposed as a whole underground and comprises a collection pool 1. A partition net 2 is fixedly connected to the inner wall of the collection pool 1. The partition net 2 divides the inner cavity of the collection pool 1 into a water storage cavity and a clean water cavity. The water storage cavity is larger than the clean water cavity. A water collection component 3 for accessing external rainwater is provided on the upper part of the clean water cavity. When in use, a water inlet well 4 can be provided at the ground position of the building where rainwater collection operation is required or at other positions of the building. The number of the water inlet wells 4 can be adjusted according to actual needs. Each water inlet well 4 is connected to the inside of the water collection cylinder 302 through a water inlet pipe. Please refer to Figure 2The water collection component 3 includes a top cover 301, a water collection barrel 302 is fixedly connected to the bottom of the top cover 301, a water inlet pump 10 is fixedly installed on the bottom of the inner wall of the water collection barrel 302, and the output end of the water inlet pump 10 is connected to the clean water chamber; during use, rainwater flows into the water collection barrel 302 through natural flow, and when necessary, the water inlet pump 10 can be started to assist the water inlet operation of each water inlet pipe; specifically, the present application also sets an operating station 15 on the ground for controlling and monitoring the overall operation of the collection device.

[0037] In one embodiment, since the storage capacity of the collection pool 1 is limited, when the collection pool 1 is full due to heavy rainfall, it is necessary to reduce or stop the water supply to the collection pool 1; in order to control the water inflow flux of the water collection cylinder 302, a liquid level gauge for measuring the liquid level height is installed inside the collection pool 1, and an adjusting member for adjusting the water collection flow rate is provided in the middle of the inner wall of the water collection cylinder 302, please refer to Figure 2 and Figure 3 The adjusting member includes a rotating toothed disc 303, which is rotatably mounted on the top cover 301. The bottom of the rotating toothed disc 303 is fixedly connected with a mounting rod 306, and the bottom of the mounting rod 306 is fixedly connected with a plurality of closing plates 307. A plurality of supporting plates 308 are fixedly mounted on the middle of the inner wall of the water collecting cylinder 302, and a water collecting port 309 is arranged between the plurality of supporting plates 308. A sealing rubber pad is fixedly connected to the bottom of the closing plate 307, and the size of the closing plate 307 is larger than the size of the water collecting port 309, so that When the closing plate 307 is rotated and aligned with the water collection port 309, the water collection port 309 can be completely closed; an adjusting motor 304 is provided on one side of the rotating toothed disc 303, and an adjusting gear 305 is fixedly connected to the output end of the adjusting motor 304, and one side of the adjusting gear 305 is meshed and connected with the rotating toothed disc 303. The adjusting motor 304 drives the adjusting gear 305 to rotate to drive the rotating toothed disc 303, the mounting rod 306 and the closing plate 307, and then the water collection cylinder 302 is closed;

[0038] In order to discharge the water after the water collecting cylinder 302 is closed, a diverter pipe is fixedly connected to one side of the water collecting cylinder 302. The connection between the diverter pipe and the water collecting cylinder 302 is higher than the height of the closing plate 307, so that the water in the water collecting cylinder 302 can flow out laterally along the diverter pipe; one end of the diverter pipe is connected to the reflux component 8, and the reflux component 8 determines the flow direction of the water sent out by the diverter pipe.

[0039] In one embodiment, see Figure 1 In order to improve the rainwater collection capacity of the building and its area, a plurality of water diversion pipes 503 are fixedly connected to the middle of the diversion pipe, and one end of the water diversion pipe 503 is fixedly connected to the interception and storage component 5, which is arranged on the downslope surface of the building or at the place where the water flow converges and flows;

[0040] In one embodiment, see Figure 5 The retaining assembly 5 includes a retaining plate 502, the bottom of which is fixedly connected to a mounting plate 501, and the top surface of the retaining plate 502 is inclined to facilitate the movement of water to the top of the retaining plate 502 for easy discharge; a water-permeable groove 504 is provided on the top of the retaining plate 502, and the bottom of the retaining plate 502 is fixedly connected to a water diversion pipe 503, so as to send the water into the diversion pipe.

[0041] In one embodiment, see Figure 5 and Figure 6 In order to protect the inner cavity of the retaining plate 502 and prevent dust and debris from blocking the water-permeable groove 504 and the internal structure, an inner lining plate 507 is slidably connected to the top of the inner wall of the retaining plate 502. A plurality of through openings 506 are opened in the middle of the inner lining plate 507. A push-pull block 505 is fixedly connected to one side of the top of the inner lining plate 507. The push-pull block 505 is provided to drive the inner lining plate 507 to move, so that the through opening 506 and the water-permeable groove 504 are misaligned, thereby protecting the inner cavity of the retaining plate 502. When rainwater needs to be retained, the push-pull block 505 is pushed to slide open.

[0042] In one embodiment, see Figure 2 A water outlet assembly and a mud discharge assembly are provided at the upper part of the water storage chamber. The water outlet assembly includes a water outlet cylinder. A water outlet pump 11 is fixedly installed at the bottom of the inner wall of the water outlet cylinder. A plurality of water outlet pipes 13 are fixedly connected to the output end of the water outlet pump 11. When the stored rainwater needs to be utilized, the water outlet pump 11 is started, and the rainwater is connected to the water outlet pipes 13 arranged at various locations for utilization.

[0043] In one embodiment, the mud discharge assembly includes a mud discharge cylinder, a mud discharge pump 12 is fixedly installed at the bottom of the inner wall of the mud discharge cylinder, the input end of the mud discharge pump 12 is fixedly connected to a mud discharge pipe, and the bottom of the mud discharge pipe is extended toward the bottom of the water storage chamber, so as to discharge the water containing a large amount of sludge at the bottom of the water storage chamber, so as to maintain the cleanliness of the rainwater stored in the collection tank 1 for subsequent utilization.

[0044] In one embodiment, a discharge pipeline 7 is provided on one side of the sludge discharge assembly, and a discarding device 6 and a return flow assembly 8 for discharging sludge are provided in the middle of the discharge pipeline 7;

[0045] To discharge the sludge, see Figure 4The discarding device 6 includes an outer cover plate, a docking sleeve 606 is fixedly connected to the bottom of the outer cover plate, a filter box 601 is fixedly connected to the bottom of the docking sleeve 606, a filter plate 602 is fixedly connected to the middle of the inner wall of the filter box 601, and the discharge pipeline 7 includes a segment 1 701 and a segment 2 702, one end of the segment 1 701 is bent downward and passes through the filter plate 602, one end of the segment 2 702 is fixedly connected to one end of the docking sleeve 606, a discarding pump 603 is fixedly installed at the bottom of the inner wall of the filter box 601, and the discarding pump 6 The output end of 03 is fixedly connected with a discard pipe 604, and the top side of the filter box 601 is fixedly connected with the docking sleeve 606 through the filter pipe 605, so that the sludge water sent out by the discharge pipeline 7 enters the position below the filter plate 602 in the filter box 601. During the rising process of the liquid level position component, it passes through the filter plate 602, and the sludge is retained by the filter plate 602 to achieve sludge filtering. The filtered clean water flows back to the docking sleeve 606 from the filter pipe 605, and is then sent to the subsequent reflux component 8 by segment two 702.

[0046] In one embodiment, see Figure 7 The backflow assembly 8 includes a mounting sleeve 801, the top of which is fixedly connected with a mounting cover plate 808, and the inner wall of the mounting cover plate 808 is fixedly installed with a detector 809 for detecting water quality, so that the operator can understand the water quality of the stored rainwater; a backflow sleeve 802 is fixedly installed at the bottom of the mounting sleeve 801, and a guide platform 807 is fixedly connected to the top of the backflow sleeve 802. The top of the guide platform 807 is tilted and fixedly connected with a filter screen 803, so as to reduce the resistance of the water flow in the process of flowing through the diversion sleeve, and the bottom of the guide platform 807 is fixedly connected with a partition plate 804, a return water pump 805 is fixedly installed at the bottom of the partition plate 804, and a return pipe 806 is fixedly connected to the output end of the return water pump 805. By setting the return water pump 805 and the water flow pipe, it is started when needed to send relatively clean rainwater back to the bottom of the collection pool 1, so as to impact the sludge at the bottom of the collection pool 1 and make it float, which is convenient for the sludge discharge operation of the sludge discharge pump 12, and realize the replacement of the water body in the collection pool 1, that is, replace the water body with more sludge at the bottom of the collection pool 1 with relatively clean water, so as to improve the cleanliness of the stored rainwater, so as to meet the water needs of garden irrigation and other water needs with higher cleanliness;

[0047] One side of the installation sleeve 801 is connected to a safety diversion well 9 through a connecting pipe, and a total amount monitor 14 is fixedly installed in the middle of the connecting pipe for detecting the total amount of rainwater discharged.

[0048] In one embodiment, see Figure 2 In order to increase the impact of the water flow and enhance the cleaning ability of the sludge, one end of the return pipe 806 is fixedly connected to a cleaning member, which is arranged inside the collection tank 1 and includes a cleaning frame 810. Figure 8 A direction adjusting motor is fixedly installed on one side of the inner wall of the cleaning frame 810, and a direction adjusting sleeve 811 is fixedly connected to the output end of the direction adjusting motor. A water supply groove 812 is opened on one side of the direction adjusting sleeve 811, and the other side of the direction adjusting sleeve 811 is fixedly connected to the return pipe 806; the direction adjusting sleeve 811 is driven to rotate by the direction adjusting motor to achieve adjustment of the direction of the water supply groove 812, so as to meet the flushing of a larger area on the bottom of the collection pool 1.

[0049] The present application discloses a rainwater collection device for buildings that automatically intercepts, purifies and stores rainwater. The collection method of the rainwater collection device is as follows: when it rains, rainwater from the outside is sent into the water collection barrel 302 along the water inlet pipe from the water inlet well 4, and then the water inlet pump 10 is started to send the water flow into the clean water chamber, and the water flow passes through the partition net 2 and disperses into the water storage chamber; part of the rainwater flows through the interception and storage component 5, and is connected to the diversion pipe through the structures such as the water permeable groove 504 and the water diversion pipe 503, and then sent into the water collection barrel 302 and the return component 8 by the diversion pipe;

[0050] When water is needed, the water outlet pump 11 is started to discharge the water in the collection tank 1 through the water outlet pipe 13, and the water outlet pipe 13 is connected to the external water-using equipment to realize the use of the water;

[0051] When the collecting tank 1 is not used for a long time, the sludge impurities in the rainwater in the collecting tank 1 are deposited at the bottom of the collecting tank 1. By starting the sludge pump 12, the muddy water at the bottom of the collecting tank 1 is sent to the discarding device 6, and is filtered and discharged by the discarding device 6.

[0052] When the liquid level in the collection tank 1 is too high, the regulating motor 304 is started to drive the regulating turntable and the supporting plates 308 to rotate, and the water collection port 309 is closed. After the closure, the water flow is sent to the installation sleeve through the diversion pipe. When the collection tank 1 does not need to be cleaned up, the water flow is discharged to the safety diversion well 9 through the connecting pipe.

[0053] When reflux cleaning is required, the reflux pump is started to send water into the cleaning piece, and then sent out through the water delivery groove 812 on the regulating sleeve to flush the sludge in the collection tank 1 so that it is separated from the tank wall.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A building rainwater collection device that automatically intercepts, purifies and stores rainwater, characterized in that: The invention comprises a collecting tank (1), wherein a partition net (2) is fixedly connected to the inner wall of the collecting tank (1), wherein the partition net (2) divides the inner cavity of the collecting tank (1) into a water storage cavity and a clean water cavity, wherein a water collecting component (3) is arranged at the upper part of the clean water cavity, wherein a water outlet component and a mud discharge component are arranged at the upper part of the water storage cavity, wherein a discharge pipeline (7) is arranged at one side of the mud discharge component, wherein a discarding device (6) for discharging mud and a return flow component (8) are arranged at the middle part of the discharge pipeline (7); wherein the water collecting component (3) comprises a water collecting cylinder (302), wherein an adjusting member for adjusting the water collecting flow is arranged at the middle part of the inner wall of the water collecting cylinder (302), wherein a diversion pipe is fixedly connected to one side of the water collecting cylinder (302), wherein one end of the diversion pipe is connected to the return flow component (8), wherein a plurality of water diversion pipes (503) are fixedly connected to the middle part of the diversion pipe, wherein one end of the water diversion pipe (503) is fixedly connected to the interception and storage component (5).

2. The automatic rainwater collection device for buildings that intercepts, purifies and stores rainwater according to claim 1 is characterized in that: The adjusting member comprises a rotating toothed disc (303), the bottom of the rotating toothed disc (303) is fixedly connected to a mounting rod (306), the bottom of the mounting rod (306) is fixedly connected to a plurality of closing plates (307), a plurality of supporting plates (308) are fixedly installed in the middle of the inner wall of the water collecting cylinder (302), and a water collecting port (309) is arranged between the plurality of supporting plates (308); an adjusting motor (304) is arranged on one side of the rotating toothed disc (303), an adjusting gear (305) is fixedly connected to the output end of the adjusting motor (304), and one side of the adjusting gear (305) is meshedly connected to the rotating toothed disc (303).

3. The automatic rainwater collection device for buildings that intercepts, purifies and stores rainwater according to claim 1 is characterized in that: The retaining and storage assembly (5) comprises a retaining and storage plate (502), the bottom of which is fixedly connected to a mounting plate (501), the top surface of the retaining and storage plate (502) is arranged at an angle, a water-permeable groove (504) is provided on the top of the retaining and storage plate (502), and the bottom of the retaining and storage plate (502) is fixedly connected to a water diversion pipe (503).

4. The automatic rainwater collection device for buildings that intercepts, purifies and stores rainwater according to claim 3 is characterized in that: The top of the inner wall of the retaining plate (502) is slidably connected to an inner lining plate (507), a plurality of through openings (506) are opened in the middle of the inner lining plate (507), and a push-pull block (505) is fixedly connected to one side of the top of the inner lining plate (507).

5. The automatic rainwater collection device for buildings that intercepts, purifies and stores rainwater according to claim 1 is characterized in that: The discarding device (6) comprises an outer cover plate, the bottom of which is fixedly connected to a docking sleeve (606), the bottom of which is fixedly connected to a filter box (601), the middle of the inner wall of the filter box (601) is fixedly connected to a filter plate (602), the discharge pipeline (7) comprises a segment 1 (701) and a segment 2 (702), one end of the segment 1 (701) is bent downward and passes through the filter plate (602), one end of the segment 2 (702) is fixedly connected to one end of the docking sleeve (606), a discarding pump (603) is fixedly installed at the bottom of the inner wall of the filter box (601), the output end of the discarding pump (603) is fixedly connected to a discarding pipe (604), and one side of the top of the filter box (601) is fixedly connected to the docking sleeve (606) via a filter out pipe (605).

6. The automatic rainwater collection device for buildings that intercepts, purifies and stores rainwater according to claim 1 is characterized in that: The return assembly (8) comprises a mounting sleeve (801), a return sleeve (802) being fixedly mounted on the bottom of the mounting sleeve (801), a guide platform (807) being fixedly connected to the top of the return sleeve (802), a filter screen (803) being fixedly connected to the top of the guide platform (807), a partition plate (804) being fixedly connected to the bottom of the guide platform (807), a return water pump (805) being fixedly mounted on the bottom of the partition plate (804), and a return pipe (806) being fixedly connected to the output end of the return water pump (805).

7. The automatic rainwater collection device for buildings that intercepts, purifies and stores rainwater according to claim 6 is characterized in that: One end of the return pipe (806) is fixedly connected to a cleaning piece, the cleaning piece is arranged inside the collection tank (1), the cleaning piece comprises a cleaning frame (810), a direction adjustment motor is fixedly installed on one side of the inner wall of the cleaning frame (810), an output end of the direction adjustment motor is fixedly connected to a direction adjustment sleeve (811), one side of the direction adjustment sleeve (811) is provided with a water supply groove (812), and the other side of the direction adjustment sleeve (811) is fixedly connected to the return pipe (806).

8. The automatic rainwater collection device for buildings that intercepts, purifies and stores rainwater according to claim 1 is characterized in that: A water inlet well (4) is provided on one side of the water collection component (3), and the water inlet well (4) is connected to the inside of the water collection cylinder (302) through a water inlet pipe. A water inlet pump (10) is fixedly installed at the bottom of the inner wall of the water collection cylinder (302), and the output end of the water inlet pump (10) is connected to the clean water chamber.

9. The automatic rainwater collection device for buildings that intercepts, purifies and stores rainwater according to claim 1 is characterized in that: The water outlet assembly comprises a water outlet cylinder, a water outlet pump (11) is fixedly installed on the bottom of the inner wall of the water outlet cylinder, and a plurality of water outlet pipes (13) are fixedly connected to the output end of the water outlet pump (11).

10. A method for collecting rainwater from a building that automatically intercepts, purifies and stores rainwater according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Rainwater is collected through the water inlet well (4) and the interception and storage component (5) and sent to the collection pool (1); Step 2: When water is needed, start the water outlet pump (11) to discharge the water in the collection tank (1) through the water outlet pipe (13); Step 3: Start the mud discharge pump (12) to send the muddy water at the bottom of the collection tank (1) to the discarding device (6), and the muddy water is filtered and discharged by the discarding device (6); Step 4: The water flow capacity of the water inlet well (4) is adjusted by means of an adjusting member, and the water that cannot pass through the well is sent to the return flow assembly (8) through a diversion pipe; Step 5: The reflux component (8) discharges or returns the water flow to the collection tank (1).

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