A roof drainage system

Abstract

The present application discloses a roof drainage system, which relates to the technical field of building drainage. It includes a building body, a drainage channel opened on the building body, a downpipe arranged in the building body, and further includes a filter element installed on the inner bottom wall of the drainage channel. The filter element includes a mounting frame, a first rotating column rotatably arranged in the mounting frame, and a plurality of water passing plates spaced around the first rotating column. A plurality of water passing holes are formed in the water passing plates. The filter element further includes a partition plate arranged in the mounting frame and a receiving plate arranged between the partition plate and the mounting frame, and a driving member for driving the first rotating column to rotate. The present application has the effect of reducing the problem that the drainage system fails due to the accumulation of sundries at the floor drain.

Description

Technical Field

[0001] This application relates to the technical field of building drainage, and in particular to a roof drainage system. Background Art

[0002] Roof drainage methods include unorganized drainage and organized drainage. Unorganized drainage means allowing rainwater to fall freely along the eaves. This method is simple and convenient, but the discharged water flow is likely to affect the wall. Organized drainage means setting up a drainage system on the roof to collect rainwater into the drainage system and flow it into the sewer along the drainage system.

[0003] In actual construction, many self-built houses and villas and other buildings generally adopt the organized drainage method. Specifically: the building roof is inclined, drainage channels are opened on the periphery of the sloping roof, sewer pipes are opened on the inner bottom wall of the drainage channels, and floor drains are arranged on the upper end face of the sewer pipes to filter debris in the rainwater. The sewer pipes are fixed to the outer side wall of the building by means of steel rings, etc. When it rains, the rainwater flows along the sloping roof into the drainage channels and then into the sewer pipes through the floor drains, thus draining the water.

[0004] In view of the above related technologies, due to the relatively low height of houses such as self-built houses and villas, dead leaves, branches and other debris often fall on the roof and will flow to the floor drain along with the rainwater, thus blocking the floor drain opening and affecting the drainage effect, which may cause the drainage system to fail. Summary of the Invention

[0005] In order to reduce the problem of the drainage system failure caused by debris accumulation at the floor drain, this application provides a roof drainage system.

[0006] This application provides a roof drainage system, adopting the following technical solutions:

[0007] A roof drainage system includes a building body, a drainage channel opened on the building body, a sewer pipe arranged in the building body, and further includes a filter element installed on the inner bottom wall of the drainage channel. The inner bottom wall of the drainage channel is inclined. The high end of the inner bottom wall of the drainage channel is the water inlet end, and the low end of the inner bottom wall of the drainage channel is the water outlet end. The filter element and the sewer pipe are both arranged at the water outlet end;

[0008] The filter element includes a mounting frame, a first rotating column rotatably arranged in the mounting frame, and a plurality of water passing plates spaced around the circumference of the first rotating column. A plurality of water passing holes are formed in the water passing plates. The filter element further includes a partition plate arranged in the mounting frame and a receiving plate arranged between the partition plate and the mounting frame. A plurality of water passing holes are spacedly formed in the partition plate. The partition plate and the mounting frame enclose a water passing port for water flow to pass through. The mounting frame and the partition plate on the periphery of the water passing port are in abutment with the end face of the lower water pipe. The partition plate, the mounting frame and the receiving plate jointly enclose a receiving space for collecting sundries;

[0009] It further includes a driving member for driving the first rotating column to rotate.

[0010] By adopting the above technical solution, rainwater can flow from the roof of the building body into the drainage channel, then flow along the inclination of the inner bottom wall of the drainage channel to the water outlet end, and after being filtered by the filter element, it is discharged through the lower water pipe;

[0011] When it rains, when the rainwater flows through the water passing plates, it can flow into the water passing holes from the water passing holes, and then flow into the lower water pipe from the water passing holes, while the sundries in the rainwater stay on the water passing plates; by driving the water passing plates to rotate by the driving member, when the water passing plates rotate to the vertical state, the sundries accumulated on the water passing plates can roll downward under the action of gravity, and when the water passing plates rotate above the receiving space, they fall onto the receiving plate, that is, into the receiving space, so as to clean the sundries on the water passing plates and collect them in the receiving space uniformly, reducing the possibility of the drainage system getting out of control due to the accumulation of sundries on the water passing plates;

[0012] At the same time, the receiving space and the water passing port are separated by the partition plate. There are water passing holes on the partition plate. The rainwater carried by the sundries falling into the receiving space can be discharged into the water passing port through the water passing holes and discharged from the water passing port, so as to drain the receiving space.

[0013] Optionally, four water passing plates are spaced around the circumference of the first rotating column. The partition plate is parallel to the side plate of the mounting frame, and all four water passing plates can be rotated in sequence to abut against the end face of the partition plate.

[0014] By adopting the above technical solution, there are four water passing plates, which are spaced around the circumference of the first rotating column, that is, two adjacent water passing plates are perpendicular to each other, and the two spaced water passing plates are located in the same plane. By rotating the first rotating column 90° each time, two water passing plates can be rotated to the horizontal state for water filtration each time. At the same time, after one water passing plate rotates one circle, the sundries on the water passing plate can be discharged into the receiving space, so that the water passing plate facing the water inlet end can continuously belong to the state of having been cleaned of sundries.

[0015] Optionally, one end of the first rotating column penetrates through the mounting bracket and extends outside the mounting bracket. The driving member includes a motor disposed on the mounting bracket, a worm gear and a worm rotatably disposed on the mounting bracket, a first gear coaxially disposed on the first rotating column, a second gear coaxially disposed on the worm gear, and a toothed belt wound between the first gear and the second gear. The toothed belt meshes with the first gear and the second gear respectively. The output end of the motor is connected to the worm, and the worm meshes with the worm gear.

[0016] By adopting the above technical solution, when the motor is started, the worm is driven to rotate, driving the worm gear to rotate, synchronously driving the second gear to rotate. Through the transmission of the toothed belt, the first gear can be driven to rotate, thereby synchronously driving the first rotating column to rotate.

[0017] Optionally, a connecting strip is provided on one side of the sewer pipe facing the mounting bracket, and a connecting groove for inserting the connecting strip is provided on the mounting bracket.

[0018] By adopting the above technical solution, by inserting the connecting strip into the connecting groove, the movement of the filter element relative to the sewer pipe in the horizontal direction can be restricted; at the same time, the connection between the filter element and the sewer pipe through the connecting strip and the connecting groove is a detachable method. When it is necessary to clean the sundries in the accommodating space, only need to take out the filter element upward to facilitate cleaning.

[0019] Optionally, the water passing plate includes a first plate and a second plate. The first plate is rotatably connected to the second plate. There is a space in the second plate for the first plate to rotate. The water passing holes are opened on the first plate. The second plate is connected to the first rotating column. A damping member for restricting the rotation of the first plate relative to the second plate is provided between the first plate and the second plate. A rotating member for driving the first plate to rotate relative to the second plate is provided on the mounting bracket.

[0020] By adopting the above technical solution, when the water passing plate is used to filter rainwater, restricting the rotation of the first plate relative to the second plate through the damping member can make the rainwater filtering more stable; after the water passing plate rotates, the first plate is driven to rotate relative to the second plate through the rotating member, and the first plate is rotated 180°, then the first plate can be turned over;

[0021] When filtering rainwater, most of the sundries will stay on the surface of the first plate. During the rotation of the water passing plate, larger sundries will fall into the accommodating space, but there may still be some fine sand, hair and other sundries adhering to the surface of the first plate. By flipping the first plate through the rotating member, after the water passing plate rotates one circle and filters rainwater again, the surface of the first plate is turned downward, and under the scouring of rainwater, the surface of the first plate can be cleaned again.

[0022] Optionally, the side walls of the first plate are parallel to each other and are respectively provided with a second rotating column and a third rotating column, the second rotating column and the third rotating column are both parallel to the axial direction of the first rotating column, the second rotating column and the third rotating column are rotatably connected to the second plate, the second rotating column extends to the outside of the second plate, and the rotating member includes a third gear coaxially arranged on the second rotating column, and a clearance groove for the second rotating column and the third gear to pass through is provided on the inner side wall of the mounting frame, and the rotating member also includes an arcuate bar arranged on the mounting frame, and a side wall of one side of the arcuate bar is provided with teeth, and the teeth extend in the clearance groove, and the third gear and the teeth on the side wall of the arcuate bar can mesh with each other, and when the third gear passes through the arcuate bar, the third gear rotates and drives the first plate to rotate 180° relative to the second plate.

[0023] By adopting the above technical solution, when the water-passing plate rotates, the third gear can pass through the give way groove. When the third gear passes through the arc-shaped bar, the third gear engages with the teeth on the arc-shaped bar, so that the third gear can rotate and drive the first plate to rotate 180° relative to the second plate.

[0024] Optionally, the damping member is a damping block slidably arranged in the first plate, a sliding groove for the damping block to slide is provided in the first plate, and a slot for the damping block to be inserted is provided on the second plate, an elastic member for driving the damping block to press against the slot is provided between the sliding groove and the damping block, and a chamfer is provided at a section of the damping block facing away from the elastic member. When the first plate rotates relative to the second plate, the damping block can slide into the sliding groove, and two damping members are provided between the first plate and the second plate, and the two damping members are symmetrical along the axis of the second rotating column.

[0025] By adopting the above technical solution, when the water-passing plate is filtering rainwater, the damping block is inserted into the slot, which can limit the first plate from rotating relative to the second plate toward the side away from the chamfer of the damping block, and at the same time can provide a certain resistance to limit the first plate from rotating relative to the second plate toward the side toward the chamfer of the damping block, so that the first plate can be more stable when filtering rainwater; at the same time, when the first plate needs to be rotated, under the action of the rotating part, the chamfered part of the damping block abuts against the second plate, thereby driving the block to slide into the slide groove, and then the first plate can be rotated.

[0026] Optionally, the end of the damping block facing away from the slot is connected to a limiting block, a limiting groove for the limiting block to slide is provided in the first plate, and the limiting groove is connected to the sliding groove.

[0027] By adopting the above technical solution, when one end of the damping block slides out of the sliding groove, the limiting block can limit the damping block from leaving the sliding groove.

[0028] Optionally, the elastic member is a spring. One end of the spring abuts against the limiting block, and the other end of the spring abuts against the inner bottom wall of the limiting groove. When the damping block is inserted into the slot, the spring is in a compressed state.

[0029] By adopting the above technical solution, when the damping block is inserted into the slot, the spring is in a compressed state, which can damp the elastic force of the damping block against the slot, thereby increasing the stability of the first plate.

[0030] In summary, the present application includes at least one of the following beneficial effects:

[0031] 1. The water passing plate is used to filter rainwater. By driving the water passing plate to rotate with a driving member, the sundries accumulated on the surface of the water passing plate can be cleaned during the rotation process, so that the sundries fall into the accommodating space under the action of gravity for collection, thereby reducing the possibility that the water passing plate is blocked by sundries and affecting the drainage performance of the drainage system;

[0032] 2. Through the cooperation of the third gear and the arc-shaped strip, the first plate is driven to flip relative to the second plate during the rotation of the water passing plate, so that sundries such as sediment that may adhere to the surface of the first plate can be further cleaned by rainwater, and the water passing plate is further cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0034] Figure 2 is a sectional structural diagram of the drainage channel;

[0035] Figure 3 is a sectional structural diagram of the mounting bracket;

[0036] Figure 4 is a schematic structural diagram of the driving member;

[0037] Figure 5 is a sectional structural diagram of the water passing plate;

[0038] Figure 6 is a schematic structural diagram of the rotating member;

[0039] Figure 7 is Figure 5 an enlarged structural diagram of part A in

[0040] Description of reference numerals: 1, building body; 2, drainage channel; 21, water inlet end; 22, water outlet end; 3, sewer pipe; 31, connecting strip; 4, filter element; 41, mounting bracket; 411, connecting groove; 412, relief groove; 42, first rotating column; 43, water passing plate; 431, water passing hole; 432, first plate; 4321, second rotating column; 4322, third rotating column; 4323, sliding groove; 4324, limiting groove; 433, second plate; 4331, slot; 44, partition plate; 441, water passing hole; 45, receiving plate; 46, water passing opening; 47, accommodating space; 5, driving member; 51, motor; 52, worm gear; 53, worm; 54, first gear; 55, second gear; 56, toothed belt; 6, damping member; 61, damping block; 611, limiting block; 7, rotating member; 71, third gear; 72, arc-shaped strip; 8, elastic member; 81, spring. Detailed implementation manners

[0041] The following further describes the present application in conjunction with the attached Figures 1-7 drawings.

[0042] An embodiment of the present application discloses a roof drainage system. Refer to Figure 1 the drawings. The drainage system includes a building body 1, a drainage channel 2 opened on the building body 1, a sewer pipe 3 fixed to the outside of the building body 1, and a filter element 4 installed on the inner bottom wall of the drainage channel 2. The sewer pipe 3 is connected to the filter element 4. The roof of the building body 1 has an inclined roof, and the drainage channel 2 is opened on the outside of the inclined roof of the building. The drainage channel 2 is provided in one-to-one correspondence with the inclined roof, so that rainwater can fall along the inclined roof of the building body 1 and flow into the drainage channel 2.

[0043] Refer to Figure 1 and Figure 2 In this embodiment, the drainage channel 2 is opened as a rectangular groove, and the inner bottom wall of the drainage channel 2 is inclined. The high end of the inner bottom wall of the drainage channel 2 is the water inlet end 21, and the low end is the water outlet end 22. The filter element 4 and the sewer pipe 3 are both arranged at the water outlet end 22. A space for placing the filter element 4 is opened on the inner bottom wall of the drainage channel 2. The filter element 4 is arranged between the drainage channel 2 and the sewer pipe 3. When it rains, after the rainwater falls into the drainage channel 2, it can flow along the inner bottom wall of the drainage channel 2 to the water outlet end 22, and then flow through the filter element 4 and be uniformly discharged into the sewer pipe 3 through the sewer pipe 3.

[0044] Refer to Figure 1 and Figure 3, the filter element 4 includes a mounting frame 41, a first rotating column 42 rotatably arranged within the mounting frame 41, and four water passing plates 43 spaced apart on the circumferential side of the first rotating column 42. The cross-section of the mounting frame 41 is in the shape of a "return" character, the side plates of the mounting frame 41 are vertically arranged, the first rotating column 42 is arranged between two mutually parallel side plates of the mounting frame 41, and both ends of the first rotating column 42 are rotatably connected to the side plates of the mounting frame 41 by means such as bearings. The end faces of the four water passing plates 43 are fixed to the first rotating column 42 by means such as welding. Two adjacent water passing plates 43 are perpendicular to each other. The water passing plates 43 are rectangular plates. In use, two of the water passing plates 43 are fixed in the horizontal direction, and two of the water passing plates 43 are fixed in the vertical direction. A plurality of water passing holes 431 for water flow to pass through are arrayed on the water passing plates 43. When rainwater flows through the water passing holes 431 of the pipe, it can filter the sundries carried in the rainwater, thereby restricting the impurities from passing through the water passing plates 43.

[0045] Refer to Figure 2 and Figure 3 , the filter element 4 further includes a partition plate 44 fixed between two mutually parallel side plates of the mounting frame 41, and a receiving plate 45 fixedly arranged between the partition plate 44 and the mounting frame 41. The partition plate 44 is arranged below the water passing plates 43. The water passing plates 43 rotated to the vertical state can be in the same vertical plane as the partition plate 44. A plurality of water passing holes 441 for water flow to pass through are arrayed on the partition plate 44. The partition plate 44 can divide the space inside the mounting frame 41 into two parts. Among them, a water passing port 46 for water flow to pass through can be enclosed between the side wall of the partition plate 44 facing the water inlet end 21 and the mounting frame 41. The lower water pipe 3 is a rectangular pipe, and the upper end face of the lower water pipe 3 can abut against the lower surfaces of the mounting frame 41 and the partition plate 44; the receiving plate 45 is a rectangular plate, the receiving plate 45 is horizontally arranged, and the receiving plate 45 is fixedly connected to the lower ends of the partition plate 44 and the mounting frame 41. Thus, a receiving space 47 for collecting sundries can be jointly enclosed between the side wall of the partition plate 44 facing away from the water inlet end 21, the mounting frame 41, and the receiving plate 45.

[0046] Refer to Figure 2 and Figure 3The drainage system also includes a driving member 5 for driving the first rotating column 42 to rotate. When in use, first, two of the water-passing plates 43 are set in the horizontal direction, and the other two water-passing plates 43 are set in the vertical direction. The two water-passing plates 43 set in the vertical direction and the partition 44 are located in the same vertical plane. When the rainwater in the drainage channel 2 flows to the filter element 4, it first passes through the water-passing plate 43 placed horizontally and close to the water inlet end 21, and flows into the water outlet 46 from the water hole 431, and then flows into the sewer pipe 3 for discharge. At this time, the debris in the rainwater is retained on the surface of the water-passing plate 43; after a period of time, the first rotating column 42 is driven by the driving member 5 to rotate 90 degrees clockwise, the first water-passing plate 43 used is rotated to a vertical state, and the water-passing plate 43 at the bottom is rotated to a horizontal state to continue filtering rainwater; when the first rotating column 42 is rotated 90 degrees clockwise again, The water flow plate 43 used for the first time is rotated to a horizontal state, and the side wall for filtering debris is facing downward, that is, toward the receiving plate 45, so that the debris on the water flow plate 43 can fall downward into the accommodating space 47, thereby collecting the debris and cleaning the water flow plate 43 at the same time, thereby reducing the possibility of the water flow hole 431 on the water flow plate 43 being blocked by debris.

[0047] Furthermore, since the partition plate 44 is provided with a water hole 441 , rainwater carried by the debris can flow into the water outlet 46 through the water hole 441 and then into the sewer pipe 3 .

[0048] Reference Figure 2 and Figure 3 A connecting strip 31 is integrally formed on the upper surface of the downpipe 3. The connecting strip 31 is a long rectangular strip. A connecting groove 411 is provided on the mounting bracket 41 for the connecting strip 31 to be inserted into. When the filter element 4 is installed in the drain channel 2, the connection strip 31 and the connecting groove 411 cooperate to position the filter element 4. Furthermore, to enhance the waterproof performance of the connection between the downpipe 3 and the filter element 4, the connecting strip 31 can be arranged circumferentially along the upper surface of the downpipe 3. The connecting groove 411 is provided on the mounting bracket 41 and the lower surface of the partition 44, which abut against the upper surface of the downpipe 3. When debris in the accommodating space 47 needs to be cleaned, the filter element 4 can be removed upwards, the water plate 43 is rotated to offset the mounting bracket 41, the debris can be dumped out, and the filter element 4 can be placed back into the drain channel 2.

[0049] Reference Figure 2 and Figure 4One end of the first rotating column 42 passes through the mounting frame 41 and extends outside the mounting frame 41. The mounting frame 41 has a portion extending upward into the drain channel 2. The driving member 5 includes a motor 51 fixed to the outer side wall of the mounting frame 41 by bolts or other means, a worm gear 52 and a worm 53 rotatably mounted on the mounting frame 41, a first gear 54 coaxially mounted on the first rotating column 42, a second gear 55 coaxially fixed to the outer side wall of the worm gear 52, and a toothed belt 56 wound between the first gear 54 and the second gear 55. Multiple supports are welded to the outer side wall of the mounting frame 41. The ends of the worm gear 52 and the worm 53 are rotatably connected to different supports, so that the worm gear 52 and the worm 53 can be rotatably mounted on the mounting frame 41. The output end of the motor 51 is welded to one end of the worm 53. The worm 53 meshes with the worm wheel 52. The toothed belt 56 meshes with the first gear 54 and the second gear 55, respectively.

[0050] Reference Figure 2 and Figure 4 , start the motor 51, drive the worm 53 to rotate, drive the worm wheel 52 to rotate, and at the same time drive the second gear 55 to rotate. Through the transmission of the toothed belt 56, it can drive the first gear 54 to rotate, thereby driving the first rotating column 42 to rotate, and finally drive the four water-passing plates 43 provided on the first rotating column 42 to rotate along the axis direction of the first rotating column 42.

[0051] Reference Figure 2 and Figure 4 In this embodiment, each time the water-passing plate 43 switches to filter rainwater, the first rotating column 42 must be rotated 90° clockwise. Optionally, to more precisely control the rotation angle of the first rotating plate, the motor 51 can be a servo motor. To protect the driver 5, a mounting box is fixedly connected to the outer sidewall of the mounting frame 41 via welding or other means. The driver 5 is located within the mounting box. A corresponding slot (not shown) is provided on the inner wall of the drain channel 2 to accommodate the mounting box. The mounting box engages the slot, allowing the filter 4 to be positioned within the drain channel 2.

[0052] Reference Figure 1 and Figure 5 Furthermore, in other embodiments, the water-passing plate 43 includes a first plate 432 and a second plate 433. The second plate 433 has a U-shaped cross-section. The first plate 432 is a rectangular plate. The water-passing holes 431 are all formed on the first plate 432. The first plate 432 is rotatably mounted inside the second plate 433. The second plate 433 has a space for the first plate 432 to rotate. The outer sidewall of the second plate 433 is welded to the first rotating column 42. A damping member 6 is disposed between the first and second plates 432, 433, to limit the rotation of the first plate 432. A rotating member 7 is disposed on the mounting frame 41 to drive the first plate 432 to rotate.

[0053] ReferenceFigure 5 On two side walls of the first plate 432 that are parallel to each other, a second rotating column 4321 and a third rotating column 4322 are respectively welded. The axial directions of the second rotating column 4321 and the third rotating column 4322 are both parallel to the axis direction of the first rotating column 42. The second rotating column 4321 and the third rotating column 4322 are both rotatably connected to the second plate 433 by means of bearings or the like, so that the first plate 432 can rotate within the second plate 433.

[0054] Refer to Figure 5 and Figure 6 As shown in FIGS. and, the second rotating column 4321 passes through the second plate 433 and extends outside the second plate 433. The rotating member 7 includes a third gear 71 coaxially fixed on the outside of the second rotating column 4321. The third gear 71 is located at one end where the second rotating column 4321 passes through the second plate 433. A relief groove 412 for the second rotating column 4321 and the third gear 71 to pass through is formed on the inner side wall of the mounting bracket 41. When the first rotating column 42 rotates to drive the water passing plate 43 to rotate clockwise, the third gear 71 can rotate clockwise with the water passing plate 43 around the axis of the first rotating column 42, and when the third gear 71 rotates to pass through the mounting bracket 41, it can pass through from the relief groove 412.

[0055] Refer to Figure 5 and Figure 6 As shown in FIGS. and, the rotating member 7 further includes an arc-shaped strip 72 fixed on the mounting bracket 41. The arc of the side wall of the arc-shaped strip 72 away from the first rotating column 42 is the same as the arc of the relief groove 412. Teeth are formed on the side wall of the arc-shaped strip 72 away from the first rotating column 42, and the teeth extend into the relief groove 412. The third gear 71 can mesh with the teeth on the side wall of the arc-shaped strip 72. The arc-shaped strip 72 is located in the water passing port 46 space formed by the partition plate 44 and the mounting bracket 41, and is located on one side of the relief groove 412 close to the first rotating column 42. When the third gear 71 passes through the arc-shaped strip 72, under the cooperation of the third gear 71 and the teeth on the arc-shaped strip 72, the third gear 71 rotates clockwise and drives the first plate 432 to rotate clockwise by 180° relative to the second plate 433, so that the first plate 432 is turned over on the second plate 433.

[0056] Refer to Figure 5 and Figure 6, when the water passing plate 43 continues to rotate clockwise to the horizontal position and filters rainwater, the first plate 432 is turned over relative to the second plate 433 under the cooperation of the third gear 71 and the arc-shaped strip 72, that is, the original upper surface of the first plate 432 becomes the lower surface. The sundries accumulated on the upper surface when the first plate 432 filters rainwater can fall into the accommodation space 47 during the rotation process. Some fine sand or hair and other objects may still adhere to the surface of the first plate 432. By turning over the first plate 432, the upper surface of the first plate 432 with fine sand and hair attached becomes the lower surface. Thus, when rainwater passes through, the lower surface of the first plate 432 can be washed, so that the fine sand and hair can be taken away, further cleaning the first plate 432, thereby reducing the possibility of the filter element 4 being blocked by sundries and becoming ineffective again.

[0057] Refer to Figure 5 and Figure 7 , the damping member 6 is a damping block 61 slidably arranged in the first plate 432. The damping block 61 is a rectangular block. A chute 4323 for the damping block 61 to slide is opened in the first plate 432. The chute 4323 penetrates to the side wall of the first plate 432 facing the second plate 433. A slot 4331 for the damping block 61 to be inserted is opened on the side wall of the second plate 433 facing the first plate 432. An elastic member 8 for driving the damping block 61 to abut against the slot 4331 is arranged between the chute 4323 and the damping block 61; a chamfer is opened on one side of the damping block 61 facing the slot 4331. When the first plate 432 rotates clockwise relative to the second plate 433, the chamfer of the damping block 61 first abuts against the second plate 433, so that the damping block 61 can be driven to slide into the chute 4323. Two damping members 6 are arranged between the first plate 432 and the second plate 433, and the damping members 6 are symmetric along the axis of the second rotating column 4321.

[0058] Thus, when the first plate 432 rotates 180° under the cooperation of the third gear 71 and the arc-shaped strip 72, the damping block 61 can be inserted into another slot 4331 again under the elastic force of the elastic member 8. When the damping block 61 is inserted into the slot 4331, it can limit the counterclockwise rotation of the first plate 432 relative to the second plate 433 and can have a certain resistance, so that the first plate 432 is not easy to rotate clockwise relative to the second plate 433. Thus, when the water passing plate 43 filters water, the first plate 432 can be stably arranged in the second plate 433 for filtering water.

[0059] Refer to Figure 5 and Figure 7, one end of the damping block 61 facing away from the slot 4331 is fixed with a limiting block 611 by means of integral molding or welding. The cross-section of the limiting block 611 is rectangular, and the area of the limiting block 611 is larger than that of the damping block 61. A limiting groove 4324 for the limiting block 611 to slide is formed in the first plate 432. The limiting groove 4324 communicates with the sliding groove 4323. Thus, when the damping block 61 slides, the limiting block 611 can limit the damping block 61 from slipping out of the sliding groove 4323.

[0060] Refer to Figure 5 and Figure 7 , the elastic member 8 is a spring 81. One end of the spring 81 is fixed to the end face of the limiting block 611, and the other end of the spring 81 is fixed to the inner bottom wall of the limiting groove 4324. When the damping block 61 is inserted into the slot 4331, the spring 81 is in a compressed state, so as to be able to provide an elastic force for the damping block 61 to press against the inner bottom wall of the slot 4331, making it difficult for the damping block 61 to slide out of the slot 4331.

[0061] The implementation principle of a roof drainage system in an embodiment of the present application is as follows: Rainwater flows into the drainage trough through the sloping roof of the building body 1 and flows along the inner bottom wall of the drainage trough to the filter member 4. The water passing plate 43 at one end of the filter member 4 close to the drainage trough filters the debris in the rainwater; After a period of time, the motor 51 is started regularly to drive the first rotating column 42 and the water passing plate 43 to rotate 90°, so as to be able to replace a new water passing plate 43 for water filtration; When the water passing plate 43 rotates 180° along with the first rotating column 42, one side wall of the water passing plate 43 that originally filtered debris rotates to face the receiving plate 45, so that the debris on the surface of the water passing plate 43 can fall into the accommodating space 47 for collection;

[0062] When the water passing plate 43 rotates past the water passing port 46 along with the first rotating column 42 and the third gear 71 passes through the arc-shaped strip 72, the third gear 71 rotates under the engagement with the outer teeth of the arc-shaped strip 72 and drives the first plate 432 to rotate 180° relative to the second plate 433, that is, the two side plates of the first plate 432 for filtering rainwater are flipped, so as to be able to further clean the residual sediment and other substances on the first plate 432.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A roof drainage system, comprising a building body (1), a drainage channel (2) opened on the building body (1), and a downpipe (3) arranged in the building body (1), characterized in that: It further includes a filter element (4) installed on the inner bottom wall of the drainage channel (2). The inner bottom wall of the drainage channel (2) is inclined. The higher end of the inner bottom wall of the drainage channel (2) is the water inlet end (21), and the lower end of the inner bottom wall of the drainage channel (2) is the water outlet end (22). The filter element (4) and the sewer pipe (3) are both arranged at the water outlet end (22). The filter element (4) includes a mounting frame (41), a first rotating column (42) rotatably arranged in the mounting frame (41), and a plurality of water passing plates (43) spaced around the first rotating column (42). A plurality of water passing holes (431) are formed in the water passing plates (43). The filter element (4) further includes a partition plate (44) arranged in the mounting frame (41), and a receiving plate (45) arranged between the partition plate (44) and the mounting frame (41). A plurality of water passing holes (441) are spaced on the partition plate (44). The partition plate (44) and the mounting frame (41) enclose a water passing port (46) for water flow to pass through. The mounting frame (41) and the partition plate (44) on the periphery of the water passing port (46) are in abutment with the end face of the sewer pipe (3). The partition plate (44), the mounting frame (41), and the receiving plate (45) together enclose a receiving space (47) for collecting sundries. It further includes a driving member (5) for driving the first rotating column (42) to rotate.

2. The roof drainage system according to claim 1, characterized in that: Four water passing plates (43) are spaced around the first rotating column (42). The partition plate (44) is parallel to the side plate of the mounting frame (41). All four water passing plates (43) can sequentially rotate to abut against the end face of the partition plate (44).

3. The roof drainage system according to claim 2, characterized in that: One end of the first rotating column (42) passes through the mounting frame (41) and extends outside the mounting frame (41). The driving member (5) includes a motor (51) arranged on the mounting frame (41), a worm wheel (52) and a worm (53) rotatably arranged on the mounting frame (41), a first gear (54) coaxially arranged on the first rotating column (42), a second gear (55) coaxially arranged on the worm wheel (52), and a toothed belt (56) wound between the first gear (54) and the second gear (55). The toothed belt (56) is respectively meshed with the first gear (54) and the second gear (55). The output end of the motor (51) is connected to the worm (53), and the worm (53) is meshed with the worm wheel (52).

4. A roof drainage system according to claim 3, characterized in that: A connecting strip (31) is arranged on one side of the sewer pipe (3) facing the mounting frame (41). A connecting groove (411) for inserting the connecting strip (31) is formed in the mounting frame (41).

5. A roof drainage system according to claim 4, characterized in that: The water passing plate (43) includes a first plate (432) and a second plate (433). The first plate (432) is rotatably connected to the second plate (433). There is a space in the second plate (433) for the first plate (432) to rotate. The water passing holes (431) are formed in the first plate (432). The second plate (433) is connected to the first rotating column (42). A damping member (6) is provided between the first plate (432) and the second plate (433) to limit the rotation of the first plate (432) relative to the second plate (433). A rotating member (7) for driving the first plate (432) to rotate relative to the second plate (433) is provided on the mounting bracket (41).

6. The roof drainage system according to claim 5, characterized in that: Second rotating columns (4321) and third rotating columns (4322) are respectively provided on two side walls of the first plate (432) that are parallel to each other. The second rotating column (4321) and the third rotating column (4322) are both parallel to the axis direction of the first rotating column (42). The second rotating column (4321) and the third rotating column (4322) are both rotatably connected to the second plate (433). The second rotating column (4321) extends outside the second plate (433). The rotating member (7) includes a third gear (71) coaxially arranged on the second rotating column (4321). A relief groove (412) for the second rotating column (4321) and the third gear (71) to pass through is formed on the inner side wall of the mounting bracket (41). The rotating member (7) further includes an arc-shaped strip (72) provided on the mounting bracket (41). Teeth are formed on one side wall of the arc-shaped strip (72), and the teeth extend into the relief groove (412). The third gear (71) can mesh with the teeth on the side wall of the arc-shaped strip (72). When the third gear (71) passes through the arc-shaped strip (72), the third gear (71) rotates and drives the first plate (432) to rotate 180° relative to the second plate (433).

7. A roof drainage system according to claim 6, wherein: The damping member (6) is a damping block (61) slidably arranged in the first plate (432). A sliding groove (4323) for the damping block (61) to slide is formed in the first plate (432). A slot (4331) for the damping block (61) to be inserted into is formed on the second plate (433). An elastic member (8) for driving the damping block (61) to abut against the slot (4331) is provided between the sliding groove (4323) and the damping block (61). A chamfer is formed on a section of the damping block (61) facing away from the elastic member (8). When the first plate (432) rotates relative to the second plate (433), the damping block (61) can slide into the sliding groove (4323). Two damping members (6) are provided between the first plate (432) and the second plate (433), and the two damping members (6) are symmetric along the axis of the second rotating column (4321).

8. A roof drainage system according to claim 7, characterized in that: One end of the damping block (61) facing away from the slot (4331) is connected to a limit block (611). A limit groove (4324) for the limit block (611) to slide is formed in the first plate (432), and the limit groove (4324) communicates with the sliding groove (4323).

9. The roof drainage system according to claim 8, characterized in that: The elastic member (8) is a spring (81). One end of the spring (81) abuts against the limit block (611), and the other end of the spring (81) abuts against the inner bottom wall of the limit groove (4324). When the damping block (61) is inserted into the slot (4331), the spring (81) is in a compressed state.

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