Rainwater filtering and impurity recycling device with self-cleaning function for green building

Abstract

The invention discloses a rainwater filtering and impurity recycling device with a self-cleaning function for a green building, and mainly relates to a rainwater recycling device. Comprising a supporting frame, the upper end of the supporting frame is fixedly connected with a waste collecting barrel, a rectangular hole is formed in the arc face of the waste collecting barrel, the inner wall of the rectangular hole of the waste collecting barrel is rotationally connected with a sliding door, the upper end of the waste collecting barrel communicates with a water collecting hopper, and the lower end of the waste collecting barrel communicates with a waste discharging pipe; an auxiliary discharging structure is arranged in the waste discharging pipe, a cleaning structure is arranged on the inner side of the waste collecting barrel, the rainwater filtering structure comprises a fixing frame, the fixing frame is fixedly connected to the inner wall of the waste collecting barrel, a water collecting barrel is fixedly connected to the interior of the fixing frame, and a water discharging pipe is installed at the lower end of the water collecting barrel in a communicating mode. The rainwater collection device has the beneficial effect that the problems that the filtering strength of the filter disc is not easy to adjust according to the rainfall, and the rainwater collection efficiency is easy to reduce in a rainstorm environment are solved.

Description

Technical Field

[0001] The invention relates to the technical field of rainwater recycling devices, and in particular to a rainwater filtering and impurity recycling device with a self-cleaning function for green buildings. Background Art

[0002] Green building rainwater recycling device is a system that collects and utilizes precipitation (rainwater) around buildings, aiming to improve resource utilization efficiency, reduce water consumption, and reduce pressure on urban drainage systems. This device is widely used in green buildings, sustainable buildings and ecological buildings, and is in line with the design concepts of energy conservation, environmental protection and sustainable development.

[0003] In the prior art, an invention patent such as the announcement number CN118166895B specifically discloses a green building rainwater recycling device, including a rainwater storage bin, the top of which is connected to a buffer mixing bin, and the top of the buffer mixing bin is provided with a primary recycling mechanism. In normal conditions, a plurality of columnar filter openings are covered with piston spring floating support plates, and large debris such as leaves cannot enter the inner cavity of the columnar filter, thereby preventing the columnar filter from being blocked. When it rains, rainwater will first accumulate in the upper water storage space formed by the circular cover ring and the flow stabilizing baffle. At this time, if there are large debris such as leaves above the piston spring floating support plate at the opening of the columnar filter, it will float up under the buoyancy of rainwater, avoiding the columnar filter opening from being blocked. Even if some debris cannot float up completely, a certain gap can be generated between the debris and the opening to facilitate the flow of rainwater. Setting the number of columnar filters to multiple can also prevent all columnar filters from being covered at the same time.

[0004] The following defects were found in the above technical solution: when recycling rainwater from building roofs, since the rainwater is usually mixed with debris such as branches and leaves, in order to avoid blockage of the rainwater collection device due to the accumulation of branches and leaves, a filter is generally installed to roughly filter the rainwater. However, it is not easy to adjust the filtering strength of the filter according to the amount of rainfall, and the rainwater collection efficiency is easily reduced in a rainstorm environment. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that it is difficult to adjust the filtering strength of the filter according to the amount of rainfall, and the rainwater collection efficiency is easily reduced in a rainstorm environment, and to propose a rainwater filtering and impurity recovery device with a self-cleaning function for green buildings.

[0006] In order to achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a rainwater filtering and impurity recovery device with self-cleaning function for green buildings, comprising a supporting frame, the upper end of the supporting frame is fixedly connected with a waste collecting barrel, the arc surface of the waste collecting barrel is provided with a rectangular hole, the inner wall of the rectangular hole of the waste collecting barrel is rotatably connected with a sliding door, the upper end of the waste collecting barrel is connected and installed with a water collecting bucket, the lower end of the waste collecting barrel is connected and installed with a waste discharge pipe, a rainwater filtering structure is arranged inside the waste collecting barrel, the rainwater filtering structure comprises a fixing frame, the fixing frame is fixedly connected to the inner wall of the waste collecting barrel, the inside of the fixing frame is fixedly connected with the water collecting barrel, the lower end of the water collecting barrel is connected and installed with a drain pipe, the drain pipe is tilted and one end of which passes through the waste collecting barrel, the inner side of the water collecting bucket is fixedly connected with a connecting frame, the inner side of the connecting frame is fixedly connected with a A waterproof motor is provided, on which a unit box is installed, in which an energy storage module, a power supply module and a central processing unit are installed, a solar panel is installed on the upper end of the waterproof motor, one end of the solar panel is electrically connected to the energy storage module, the power supply module and the central processing unit in the unit box, a rotating block is fixedly connected to the output end of the waterproof motor, four first filters are evenly fixedly connected to the circular arc surface of the rotating block, the lower end of the rotating block is rotatably connected to a fixing seat, four second filters are evenly fixedly connected to the circular arc surface of the fixing seat, both of the first filter and the second filter are quarter-sector-shaped, the lower end of the fixing seat is fixedly connected to a limiting frame, the limiting frame is fixedly connected to the inside of a water collecting cylinder, a water pressure sensor is installed inside the lower end of the water collecting cylinder, and the water pressure sensor is electrically connected to the power supply module in the unit box.

[0007] The effect achieved by the above components is: the water pressure in the water collection cylinder can be monitored with the help of a water pressure sensor, so as to determine the rainfall in the current environment, and then the water pressure signal can be transmitted to the waterproof motor, so that the waterproof motor drives the first filter to rotate, and then adjusts the gap between the first filter and the second filter. In case of heavy rain, the gap can be enlarged to increase the rainwater collection speed.

[0008] Preferably, one end of the drain pipe is connected to a bellows, and one end of the bellows is installed with a rotary joint.

[0009] The effect achieved by the above components is that the collected rainwater can be stored in an external water storage tank with the help of a rotating joint, wherein the bellows can adjust the extension length of the drainage pipe according to actual installation requirements.

[0010] Preferably, a plurality of filter holes are evenly formed on the first filter plate and the second filter plate, and the filter holes are hexagonal.

[0011] The effects achieved by the above components are as follows: the filter holes on the first filter disc and the second filter disc are arranged in a hexagonal shape, mainly because the edges of the hexagons can provide a larger drainage channel.

[0012] Preferably, the edges of the first filter plate and the second filter plate are rounded.

[0013] The effect achieved by the above components is that when the first filter disc rotates, the scraper disc can more smoothly contact with the first filter disc and the second filter disc and slide smoothly.

[0014] Preferably, the size of adjacent gaps between the four first filter plates matches the size of the second filter plate.

[0015] Preferably, a plurality of guide grooves are provided on the inner side of the water collecting bucket, and the plurality of guide grooves are evenly distributed on the inner side of the water collecting bucket.

[0016] The effect achieved by the above components is: it can help rainwater to quickly and centrally flow into the waste collection barrel and the water collection bucket.

[0017] Preferably, a cleaning structure is provided on the inner side of the waste collecting barrel, and the cleaning structure includes a clamping plate, which is fixedly connected to the inner side of the waste collecting barrel, one end of the clamping plate is fixedly connected to a fixing rod, the lower end of the fixing rod is fixedly connected to a positioning plate, the lower surface of the positioning plate is fixedly connected to two first springs, and the lower ends of the two first springs are fixedly connected to scrapers.

[0018] The effect achieved by the above components is: when the waterproof motor drives the first filter to rotate, the impurities on the first filter can be cleaned off by the scraper, and the impurities are thrown onto the inner wall of the waste collecting barrel by the centrifugal force generated by the rotation, and the impurities slide into the waste pipe by their own gravity for discharge.

[0019] Preferably, the scraper is fixedly connected with a guide rod at a position corresponding to the first spring, the guide rod is inside the first spring, and the upper end of the guide rod slides through the positioning plate.

[0020] The effect achieved by the above-mentioned components is that the first spring can be made to slide and retract on the arc surface of the guide rod, thereby limiting the direction of the elastic force of the first spring.

[0021] Preferably, an auxiliary discharge structure is provided inside the waste discharge pipe, and the auxiliary discharge structure includes a sliding rod, which is slidably inserted on the waste discharge pipe, and the lower surface of the waste discharge pipe is fixedly connected with a buckle, and the lower end of the sliding rod slides through the buckle, and the upper end of the sliding rod is fixedly connected with a rectangular plate, and the rectangular plate is located inside the waste discharge pipe, and the lower end of the sliding rod is fixedly connected with a circular plate, and a second spring is sleeved on the sliding rod, and the two ends of the second spring are respectively fixedly connected to the buckle and the circular plate, and the lower surface of the waste discharge pipe is fixedly connected with a fixed plate, and a connecting shaft is rotatably connected in the fixing plate, and one end of the connecting shaft is fixedly connected with an adjusting plate, and a plurality of protrusions are evenly fixedly connected to the circular surface of the adjusting plate, and the adjusting plate is located directly below the circular plate, and the end of the connecting shaft away from the adjusting plate is fixedly connected with a fan.

[0022] The effect achieved by the above components is: the wind or rain in heavy rain weather can hit the fan, drive the fan to rotate and then drive the adjustment plate to rotate, so that the rectangular plate vibrates up and down inside the waste discharge pipe, thereby assisting discharge.

[0023] Preferably, a locking ball is fixedly connected to the lower end of the circular plate, and the arc surface of the locking ball abuts against the adjustment plate.

[0024] The effect achieved by the above components is: the contact area between the circular plate and the adjustment plate is reduced, so that the fan can more easily drive the slide bar to move up and down.

[0025] In summary, the beneficial effects of the present invention are:

[0026] In the present invention, the efficient, continuous and automatic rainwater filtration and self-cleaning functions are realized by the combined design of rotating the first fan-shaped filter, automatic cleaning of the scraper, the waste collection barrel for impurity recovery and automatic adjustment of the filter gap according to the rainfall. Compared with the traditional static filter rainwater filter, this technical solution has the significant advantages of stronger filtering effect, higher degree of automation and lower maintenance cost.

[0027] In the present invention, the conventional static filter device is easily clogged and needs to be cleaned manually, while the rotating first filter disc and the scraper cleaning structure of the present invention realize an automated cleaning process, reducing the maintenance frequency and the workload of manual cleaning. The rotating first filter disc combines the cleaning function of the centrifugal force and the scraper, and can continuously complete the cleaning without pausing the device, thereby realizing uninterrupted filtering operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attached Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0029] Attached Figure 2 The present invention Figure 1 Schematic diagram of the rear structure;

[0030] Attached Figure 3 The present invention Figure 1 A partial structural diagram of

[0031] Attached Figure 4 It is a schematic diagram of the internal structure of the waste collection barrel of the present invention;

[0032] Attached Figure 5 It is a schematic diagram of the internal structure of the auxiliary discharge structure of the present invention;

[0033] Attached Figure 6 It is a schematic diagram of partial structural disassembly of the rainwater filtration structure of the present invention;

[0034] Attached Figure 7 It is a structural schematic diagram of the cleaning structure of the present invention;

[0035] Attached Figure 8 It is a partial structural schematic diagram of the auxiliary discharge structure of the present invention;

[0036] Attached Fig. 9 It is a schematic diagram of the internal structure of the water collecting tube of the present invention;

[0037] Attached Fig.10 It is a system flow chart of the present invention.

[0038] Numbers shown in the attached drawings: 1, support frame; 2, waste collection barrel; 3, sliding door; 4, water collection bucket; 5, waste discharge pipe; 6, rainwater filtration structure; 601, fixing frame; 602, water collection barrel; 603, drainage pipe; 604, connecting frame; 605, waterproof motor; 606, unit box; 607, solar panel; 608, rotating block; 609, first filter; 610, fixing seat; 611, second filter; 612, limiting frame; 613, corrugated Tube; 614, rotary joint; 7, auxiliary discharge structure; 701, slide rod; 702, buckle; 703, round plate; 704, second spring; 705, card ball; 706, adjustment plate; 707, fixed plate; 708, connecting shaft; 709, fan; 710, rectangular plate; 8, cleaning structure; 81, card plate; 82, fixed rod; 83, positioning plate; 84, first spring; 85, scraper; 86, guide rod; 9, water pressure sensor. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0040] Reference Figure 1As shown, the present invention provides a technical solution: a rainwater filtering and impurity recovery device with self-cleaning function for green buildings, comprising a support frame 1, a waste collecting barrel 2 is fixedly connected to the upper end of the support frame 1, a rectangular hole is opened on the arc surface of the waste collecting barrel 2, a sliding door 3 is rotatably connected to the inner wall of the rectangular hole of the waste collecting barrel 2, a water collecting bucket 4 is connected and installed at the upper end of the waste collecting barrel 2, a waste discharge pipe 5 is connected and installed at the lower end of the waste collecting barrel 2, a rainwater filtering structure 6 is provided inside the waste collecting barrel 2, an auxiliary discharge structure 7 is provided inside the waste discharge pipe 5, and a cleaning structure 8 is provided on the inner side of the waste collecting barrel 2.

[0041] The specific settings and functions of the rainwater filtering structure 6, the auxiliary discharge structure 7 and the cleaning structure 8 are described in detail below.

[0042] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Fig. 9As shown, in this embodiment: the rainwater filtering structure 6 includes a fixing frame 601, the fixing frame 601 is fixedly connected to the inner wall of the waste collecting barrel 2, the fixing frame 601 is fixedly connected to the inner wall of the waste collecting barrel 2, the fixing frame 601 is fixedly connected to the water collecting barrel 602, the lower end of the water collecting barrel 602 is connected and installed with a drain pipe 603, the drain pipe 603 is placed obliquely and one end of the drain pipe 603 passes through the waste collecting barrel 2, the inner side of the water collecting bucket 4 is fixedly connected to a connecting frame 604, the inner side of the connecting frame 604 is fixedly connected to a waterproof motor 605, a unit box 606 is installed on the waterproof motor 605, the unit box 606 is installed with an energy storage module, a power supply module and a central processing unit, and a solar panel 607 is installed on the upper end of the waterproof motor 605, one end of the solar panel 607 is connected to the unit box 6 The energy storage module, power supply module and central processing unit in 06 are electrically connected, the output end of the waterproof motor 605 is fixedly connected to a rotating block 608, the arc surface of the rotating block 608 is evenly fixedly connected with four first filters 609, the lower end of the rotating block 608 is rotatably connected to a fixed seat 610, the arc surface of the fixed seat 610 is evenly fixedly connected with four second filters 611, the first filter 609 and the second filter 611 are both quarter-sector-shaped, the lower end of the fixed seat 610 is fixedly connected to a limiting frame 612, the limiting frame 612 is fixedly connected to the inside of the water collecting cylinder 602, and a water pressure sensor 9 is installed inside the lower end of the water collecting cylinder 602, and the water pressure sensor 9 is electrically connected to the power supply module in the unit box 606. The water pressure in the water collection cylinder 602 can be monitored by means of the water pressure sensor 9, so as to determine the rainfall in the current environment, and then the water pressure signal is transmitted to the waterproof motor 605, so that the waterproof motor 605 drives the first filter 609 to rotate, and then adjusts the gap between the first filter 609 and the second filter 611. In case of heavy rain, the gap can be enlarged to increase the speed of rainwater collection. One end of the drain pipe 603 is connected to a bellows 613, and one end of the bellows 613 is installed with a rotary joint 614. The collected rainwater can be stored in an external water storage tank with the help of the rotary joint 614, wherein the bellows 613 can adjust the length of the extension of the drain pipe 603 according to the actual installation requirements. A plurality of filter holes are evenly opened on the first filter 609 and the second filter 611, and the filter holes are hexagonal. The filter holes on the first filter 609 and the second filter 611 are set as hexagons. The main function of the hexagonal edges can provide a larger drainage channel. The edge positions of the first filter 609 and the second filter 611 are both rounded. When the first filter 609 rotates, the scraper 85 can more smoothly contact and slide with the first filter 609 and the second filter 611. The size of the adjacent gaps between the four first filter plates 609 matches the size of the second filter 611. A plurality of guide grooves are provided on the inner side of the water collecting bucket 4, and the plurality of guide grooves are evenly distributed on the inner side of the water collecting bucket 4. The effect of assisting rainwater to quickly and centrally flow into the waste collecting barrel 2 and the water collecting bucket 4 is achieved.

[0043] Reference Figure 5 , Figure 6 and Figure 7As shown, in this embodiment: the cleaning structure 8 includes a card plate 81, the card plate 81 is fixedly connected to the inner side of the waste collection barrel 2, one end of the card plate 81 is fixedly connected to a fixing rod 82, the lower end of the fixing rod 82 is fixedly connected to a positioning plate 83, the lower surface of the positioning plate 83 is fixedly connected to two first springs 84, and the lower ends of the two first springs 84 are fixedly connected to a scraper 85. When the waterproof motor 605 drives the first filter 609 to rotate, the impurities on the first filter 609 can be cleaned off with the help of the scraper 85, and the impurities are thrown onto the inner wall of the waste collection barrel 2 with the help of the centrifugal force generated by the rotation, and the impurities slide into the waste discharge pipe 5 with the help of their own gravity. The scraper 85 is fixedly connected to the position corresponding to the first spring 84 with a guide rod 86, the guide rod 86 is inside the first spring 84, and the upper end of the guide rod 86 slides through the positioning plate 83. The first spring 84 can be slid and retracted on the arc surface of the guide rod 86, and the elastic direction of the first spring 84 is limited.

[0044] Reference Figure 5 and Figure 8 As shown, in this embodiment: the waste discharge pipe 5 is provided with an auxiliary discharge structure 7, the auxiliary discharge structure 7 includes a slide bar 701, the slide bar 701 is slidably inserted on the waste discharge pipe 5, the lower surface of the waste discharge pipe 5 is fixedly connected with a buckle 702, the lower end of the slide bar 701 slides through the buckle 702, the upper end of the slide bar 701 is fixedly connected with a rectangular plate 710, the rectangular plate 710 is located inside the waste discharge pipe 5, the lower end of the slide bar 701 is fixedly connected with a circular plate 703, and the slide bar 701 is sleeved with a second elastic The first spring 704 and the second spring 704 are respectively fixedly connected to the buckle 702 and the circular plate 703. The lower surface of the waste discharge pipe 5 is fixedly connected with a fixed plate 707. A connecting shaft 708 is rotatably connected inside the fixed plate 707. One end of the connecting shaft 708 is fixedly connected with an adjusting plate 706. The arc surface of the adjusting plate 706 is evenly fixedly connected with several protrusions. The adjusting plate 706 is located directly below the circular plate 703. The end of the connecting shaft 708 away from the adjusting plate 706 is fixedly connected with a fan 709. The fan 709 can be hit by wind or rain in heavy rain weather to drive the fan 709 to rotate and then drive the adjusting plate 706 to rotate, so that the rectangular plate 710 vibrates up and down inside the waste discharge pipe 5, thereby assisting in material discharge. The lower end of the circular plate 703 is fixedly connected with a card ball 705, and the arc surface of the card ball 705 abuts against the adjusting plate 706. The contact area between the circular plate 703 and the adjusting plate 706 is reduced, thereby making it easier for the fan 709 to drive the sliding rod 701 to move up and down.

[0045] Detailed instructions for use: First install the entire device on the roof of the building, then pull open the bellows 613 to connect the rotary joint 614 to the water tank. In normal sunny weather, the solar panel 607 will convert light energy into electrical energy and store it in the energy storage module of the unit box 606. In heavy rain, rainwater mixed with impurities will flow from the water collecting bucket 4 along the guide groove into the waste collecting barrel 2 and the water collecting barrel 602. When the rainwater mixed with impurities enters the water collecting barrel 602, the first filter 609 and the second filter 611 can be used to simply filter the impurities such as branches and leaves mixed in the rainwater. At this time, the filtered rainwater will directly enter the water collecting barrel 602, and the water will flow through the water collecting barrel 602. When the water collecting cylinder 602 is in operation, the water pressure sensor 9 will capture the water pressure in the water collecting cylinder 602 and transmit the water pressure parameters to the waterproof motor 605. At this time, the waterproof motor 605 will start and drive the rotating block 608 to rotate. The rotation of the rotating block 608 will drive the first filter 609 to rotate. The gap between the first filter 609 and the second filter 611 will become larger, so that the torrential rain will quickly pass through the first filter 609 and the second filter 611 into the water collecting cylinder 602, and finally flow from the drain pipe 603 to the external water storage tank.

[0046] When it is necessary to clean the impurities accumulated on the first filter 609, the waterproof motor 605 directly rotates and keeps the rotation speed of the first filter 609 at 30-60r / min as set. When the first filter 609 rotates, the first spring 84 always gives elastic force to the scraper 85, so that the scraper 85 is against the surface of the first filter 609. Therefore, when the first filter 609 rotates, the scraper 85 cleans the impurities on the first filter 609. During the cleaning process, the accumulated impurities can be thrown into the waste collection barrel 2 with the help of centrifugal force and finally fall into the waste discharge pipe 5 under the influence of the gravity of the impurities themselves. The rotation speed of the first filter 609 is controlled at 30-60r / min to ensure that the centrifugal force is sufficient to clean the surface of the first filter 609 and the second filter 611, and to avoid excessive disturbance of the water flow. In the process controlled by the central processor, the first filter 609 can be rotated intermittently, rotating for 1 minute every 10 minutes. In this way, the first filter 609 is stationary for filtering most of the time, and is rotated and then cleaned in a small part of the time.

[0047] When impurities such as branches and leaves fall on the rectangular plate 710 of the waste pipe 5, rain or wind in heavy rain weather will directly act on the fan 709 to rotate the fan 709. The rotation of the fan blades will drive the adjustment plate 706 to rotate with the help of the connecting shaft 708. When the adjustment plate 706 rotates, it will use the convexity of its own arc surface to continuously push the card ball 705. The card ball 705 will shake up and down under the elastic force of the second spring 704, and the slide bar 701 will drive the rectangular plate 710 to shake up and down, thereby helping to quickly discharge the debris accumulated on the rectangular plate 710.

Claims

1. A rainwater filtration and impurity recovery device with a self-cleaning function for a green building, comprising a support frame (1), the upper end of the support frame (1) is fixedly connected to a waste collection barrel (2), the arc surface of the waste collection barrel (2) is provided with a rectangular hole, the inner wall of the rectangular hole of the waste collection barrel (2) is rotatably connected to a sliding door (3), the upper end of the waste collection barrel (2) is connected to a water collection bucket (4), and the lower end of the waste collection barrel (2) is connected to a waste discharge pipe (5), characterized in that: A rainwater filtering structure (6) is provided inside the waste collection barrel (2), and the rainwater filtering structure (6) comprises a fixing frame (601), the fixing frame (601) is fixedly connected to the inner wall of the waste collection barrel (2), a water collection barrel (602) is fixedly connected inside the fixing frame (601), a drainage pipe (603) is connected and installed at the lower end of the water collection barrel (602), the drainage pipe (603) is placed obliquely and one end of which passes through the waste collection barrel (2), a connecting frame (604) is fixedly connected to the inner side of the water collection bucket (4), a waterproof motor (605) is fixedly connected inside the connecting frame (604), a unit box (606) is installed on the waterproof motor (605), an energy storage module, a power supply module and a central processing unit are installed in the unit box (606), and a solar panel (607) is installed on the upper end of the waterproof motor (605), and the solar panel (60 7) is electrically connected to the energy storage module, the power supply module and the central processing unit in the unit box (606); the output end of the waterproof motor (605) is fixedly connected to a rotating block (608); the arc surface of the rotating block (608) is evenly and fixedly connected to four first filter discs (609); the lower end of the rotating block (608) is rotatably connected to a fixing seat (610); the arc surface of the fixing seat (610) is evenly and fixedly connected to four second filter discs (611); the first filter discs (609) and the second filter discs (611) are both quarter-sector shaped; the lower end of the fixing seat (610) is fixedly connected to a limiting frame (612); the limiting frame (612) is fixedly connected to the inside of the water collecting barrel (602); a water pressure sensor (9) is installed inside the lower end of the water collecting barrel (602); the water pressure sensor (9) is electrically connected to the power supply module in the unit box (606).

2. The rainwater filtering and impurity recovery device with self-cleaning function for green building according to claim 1, characterized in that: One end of the drainage pipe (603) is connected to a bellows (613), and one end of the bellows (613) is installed with a rotary joint (614).

3. The rainwater filtering and impurity recovery device with self-cleaning function for green building according to claim 1, characterized in that: The first filter plate (609) and the second filter plate (611) are evenly provided with a plurality of filter holes, and the filter holes are hexagonal.

4. The rainwater filtering and impurity recovery device with self-cleaning function for green building according to claim 1, characterized in that: The edges of the first filter plate (609) and the second filter plate (611) are both rounded.

5. The rainwater filtering and impurity recovery device with self-cleaning function for green building according to claim 1, characterized in that: The size of adjacent gaps between the four first filter plates (609) is matched with the size of the second filter plate (611).

6. The rainwater filtering and impurity recovery device with self-cleaning function for green building according to claim 1, characterized in that: A plurality of guide grooves are provided on the inner side of the water collecting bucket (4), and the plurality of guide grooves are evenly distributed on the inner side of the water collecting bucket (4).

7. The rainwater filtering and impurity recovery device with self-cleaning function for green building according to claim 1, characterized in that: A cleaning structure (8) is provided on the inner side of the waste collecting barrel (2), and the cleaning structure (8) comprises a clamping plate (81), and the clamping plate (81) is fixedly connected to the inner side of the waste collecting barrel (2), one end of the clamping plate (81) is fixedly connected to a fixing rod (82), the lower end of the fixing rod (82) is fixedly connected to a positioning plate (83), the lower surface of the positioning plate (83) is fixedly connected to two first springs (84), and the lower ends of the two first springs (84) are fixedly connected to scrapers (85).

8. The rainwater filtering and impurity recovery device with self-cleaning function for green building according to claim 7, characterized in that: The scraper (85) is fixedly connected to a guide rod (86) at a position corresponding to the first spring (84). The guide rod (86) is inside the first spring (84), and the upper end of the guide rod (86) slides through the positioning plate (83).

9. The rainwater filtering and impurity recovery device with self-cleaning function for green building according to claim 1, characterized in that: An auxiliary discharge structure (7) is provided inside the waste discharge pipe (5), and the auxiliary discharge structure (7) comprises a slide bar (701), the slide bar (701) is slidably inserted on the waste discharge pipe (5), a buckle (702) is fixedly connected to the lower surface of the waste discharge pipe (5), the lower end of the slide bar (701) slides through the buckle (702), the upper end of the slide bar (701) is fixedly connected to a rectangular plate (710), and the rectangular plate (710) is located inside the waste discharge pipe (5), the lower end of the slide bar (701) is fixedly connected to a circular plate (703), and a second spring (703) is sleeved on the slide bar (701). 704), the two ends of the second spring (704) are fixedly connected to the buckle (702) and the circular plate (703) respectively, the lower surface of the exhaust pipe (5) is fixedly connected to a fixing plate (707), a connecting shaft (708) is rotatably connected inside the fixing plate (707), one end of the connecting shaft (708) is fixedly connected to an adjusting plate (706), a plurality of protrusions are evenly fixedly connected to the arc surface of the adjusting plate (706), the adjusting plate (706) is located directly below the circular plate (703), and one end of the connecting shaft (708) away from the adjusting plate (706) is fixedly connected to a fan (709).

10. The rainwater filtering and impurity recovery device with self-cleaning function for green building according to claim 9, characterized in that: A locking ball (705) is fixedly connected to the lower end of the circular plate (703), and the arc surface of the locking ball (705) is in contact with the adjustment plate (706).

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