Large-angle pitched roof drainage structure
By designing a large-angle sloped roof drainage structure, using components such as fan blades, extension plates, overflow holes and diversion pipes, the problems of rainwater impact and poor drainage during heavy rainfall are solved, and a more efficient and safe drainage effect is achieved.
Patent Information
- Application Number
- CN202510337219.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-06-13
AI Technical Summary
When heavy rainfall occurs on a large-angle slope roof, the rapid rainwater flow rate will lead to deformation of the gutter and damage to the drainage outlet. The traditional drainage structure is difficult to cope with instantaneous large flow of rainwater, which is prone to overflow or poor drainage.
A large angle slope roof drainage structure is designed, including components such as rectangular opening pipes, rotating rollers, fan blades and extension plates. The fan blades realize bidirectional drainage by offsetting the kinetic energy of rainwater, extending the plate to isolate splashing rainwater, overflow holes and diversion pipes, and drive the motor and cam mechanism to intermittently separate the filter plates to increase the drainage hole area.
It effectively avoids rainwater directly impacting the rectangular open pipe, reduces the risk of damage, increases the effective area of the drainage port, improves drainage efficiency, reduces the risk of overflow, and reduces the frequency of manually cleaning the filter plate.
Smart Images
Figure CN120139435A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of roof drainage equipment, and particularly to a drainage structure for a large-angle pitched roof. Background Art
[0002] A pitched roof refers to a roof structure with a certain inclination angle, and its slope design helps to quickly drain rainwater and prevent waterlogging. However, for a large-angle pitched roof (usually referring to a roof with a slope greater than 45°), due to its steep slope, the rainwater flows extremely fast under the action of gravity, resulting in the following problems: Firstly, the high-speed water flow causes a huge impact on the gutter and the drainage outlet, easily leading to deformation of the gutter, damage to the drainage outlet, or leakage at the connection; Secondly, during heavy rainfall, a large amount of rainwater flows into the gutter concentratedly, and the instantaneous drainage pressure borne by the drainage outlet is too large, which may cause water overflow or poor drainage; Finally, traditional gutter drainage outlets usually set filter plates to prevent debris from entering the drain pipe, but during heavy rainfall, the filter plates are easily blocked by debris, affecting the drainage efficiency.
[0003] Traditional drainage structures usually consist of a gutter, a drainage outlet, and a drain pipe. The gutter is located at the edge of the roof, used to collect the rainwater sliding down from the roof, and drain the rainwater through the drainage outlet and the drain pipe. However, this type of drainage structure has a limited capacity of its own gutter during heavy rainfall, and cannot effectively cope with the impact of a large flow of rainwater, easily leading to water overflow, and the high-speed water flow directly impacts the drainage outlet or the inner wall of the gutter, resulting in easy damage or deformation at the drainage outlet and the inner wall of the gutter, shortening the service life of the drainage system.
[0004] Traditional drainage structures usually adopt a single-channel design, that is, rainwater is discharged through a single drainage outlet and drain pipe. Due to the limited drainage capacity of the single channel, it is difficult to meet the drainage requirements of instantaneous large flow of rainwater, easily causing overload of the drainage outlet, resulting in water overflow or poor drainage. At the same time, the single-channel design lacks a diversion mechanism, and the rainwater concentrates on impacting the drainage outlet, exacerbating the risk of wear and damage to the drainage outlet.
[0005] Therefore, it is necessary to provide a drainage structure for a large-angle pitched roof to solve the above technical problems. Summary of the Invention
[0006] In view of the problems existing in the prior art, the present invention provides a drainage structure for a large-angle pitched roof.
[0007] The technical solution adopted by the present invention to solve its technical problems is: A drainage structure for a large-angle pitched roof, including a rectangular opening pipe installed on the eaves bracket of the top floor of a house. The rectangular opening pipe is a component made of a metal material, and the top opening end of the rectangular opening pipe is located on the extension line of the end of the pitched roof. Drainage holes are installed at the bottom of the rectangular opening pipe, and drain pipes are connected to the bottom of each of the plurality of drainage holes; A rotating roller is installed at the upper position inside the rectangular open pipe, and a fan blade part is fixedly installed circumferentially on the outer circumference of the rotating roller; An extension plate is arranged above the rotating roller. The two ends of the extension plate are fixed on the inner wall of the rectangular open pipe. The extension plate is welded in an S shape by two inner arc plates and outer arc plates of the same size. The inner arc plate is concentrically arranged with the rotating roller, and the outer arc plate is located above the rotating roller.
[0008] Preferably, the fan blade part is composed of a bucket-shaped plate and a panel. One end of the bucket-shaped plate is welded to the outer wall of the rotating roller, and the panel partially covers the open end of the bucket-shaped plate. A covering plate is connected to the bottom end of the extension plate. Through holes are opened at the bottom of the covering plate. An inclined plate is connected to the end of the covering plate, and the end of the inclined plate is fixed on the inner wall of the rectangular open pipe. A plurality of water filtering holes are evenly distributed on the inclined plate. A receiving plate is welded to the outer bottom wall of the covering plate, and the end of the receiving plate abuts against the inner wall of the rectangular open pipe. An overflow hole is opened on the inner side of the rectangular open pipe near the receiving plate. A diversion pipe is installed at the position on the outer side wall of the rectangular open pipe opposite to the overflow hole. The bottom of the diversion pipe is communicated with a drain pipe through a connecting pipe and a three-way valve.
[0009] Preferably, support rods are symmetrically installed at the top of the rectangular open pipe. A cross bar is inserted on the support rods. An insertion rod is installed at the bottom of the cross bar at the position opposite to the drain hole, and one end of the insertion rod passes through the through hole and is located inside the rectangular open pipe. A filter plate is installed at the bottom of the insertion rod, and the filter plate abuts against the drain hole. A waterproof cover is installed on the outer side wall of the rectangular open pipe. A driving motor is installed inside the waterproof cover. The output end of the driving motor is connected with a cam, and the outer wall of the cam contacts but is not connected to the outer wall of the cross bar.
[0010] Preferably, both ends of the rotating roller protrude outside the two side walls of the rectangular open pipe. One of the outer exposed ends of the rotating roller is connected with a disc through a concentric rod. Magnets are embedded at equal angles along the circumference of the outer circle of the disc. An outer circular shell is arranged at the concentric position outside the disc. The outer circular shell is fixed to the outer wall of the rectangular open pipe through bolts. A magnetic switch is installed at the midline of the bottom of the outer circular shell. A driving power supply is installed on one side of the cornice frame. The magnetic switch, the driving power supply and the driving motor are electrically connected through wires. A counterweight block is installed inside one of the bucket-shaped plates.
[0011] Preferably, a fixing rod is fixedly installed on the inner side surface of the receiving plate. The end of the fixing rod is fixedly connected to a hollow plate, and the hollow plate is sleeved on the outer wall of the insertion rod. A thimble is arranged at the bottom of the hollow plate.
[0012] Preferably, both the inclined plate and the fan blade part are coated with an epoxy resin bottom layer coating with a thickness of 10 - 50 microns, and a polytetrafluoroethylene coating with a thickness of 20 - 100 microns is coated on the bottom layer coating.
[0013] Preferably, a bearing is installed at the connection between the rotating roller and the rectangular open pipe. A sealing silica gel sleeve is rotatably sleeved outside the rotating roller, and one end of the sealing silica gel sleeve is fixed to the inner wall of the rectangular open pipe.
[0014] Preferably, the aperture of the water filtering holes is larger than that of the filter plate.
[0015] Compared with the related art, a large-angle pitched roof drainage structure provided by the present invention has the following beneficial effects: The present invention provides a large-angle pitched roof drainage structure. A fan blade part is fixedly installed circumferentially on the outer ring of the rotating roller. In case of heavy rainfall, when rainwater passes through the large-angle pitched roof, the end part flows in a parabolic shape towards the fan blade part. The fan blade part offsets the kinetic energy of the rainwater when it slides down, avoiding the rainwater directly impacting the inner wall of the rectangular open pipe, thereby preventing damage or deformation of the rectangular open pipe. And components such as an extension plate are provided. The extension plate effectively increases the lateral depth on one side of the top of the open end of the rectangular open pipe, and the extension plate can effectively isolate the splashing rainwater when the rainwater flows towards the rectangular open pipe.
[0016] The present invention provides a large-angle pitched roof drainage structure. An overflow hole is opened on the inner side of the rectangular open pipe of the present invention near the receiving plate. A diversion pipe is installed at a position on the outer side wall of the rectangular open pipe opposite to the overflow hole. The bottom of the diversion pipe is communicated with a drain pipe through a connecting pipe and a three-way valve. The rainwater on the receiving plate will flow into the drain pipe through the overflow hole, the connecting pipe and the three-way valve and be discharged. In this way, the fan blade part used to offset the impact force of the rainwater can also store part of the rainwater and transfer it, making the drainage channel of the rainwater two-way, effectively relieving the drainage pressure of a single channel.
[0017] The present invention provides a large-angle pitched roof drainage structure. Components such as a driving motor are provided. After the driving motor works, it drives the cam to rotate. The rotated cam moves outward along the cross bar and applies a vertically upward thrust to it. Under the action of this thrust, the cross bar moves reciprocally in the vertical direction, and the filter plate is separated from the drainage holes reciprocally. In this way, the intermittent separation of the filter plate from the drainage holes can temporarily expand the effective area of the drainage holes, increase the drainage flow rate, make the drainage smoother, reduce the risk of water overflow, and the intermittent separation design can let the large-flow rainwater wash away the debris on the filter plate, prevent the filter plate from being blocked, reduce the frequency of manual cleaning, and the driving motor can automatically adjust to enter the working state in case of heavy rainfall. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a three-dimensional construction drawing of the overall structure of the present invention; Figure 2 is an installation schematic diagram of the overall structure of the present invention; Figure 3 is a three-dimensional view of a part of the structure of the present invention Figure 1 ; Figure 4 For the present invention Figure 3 a partially enlarged schematic view of area A in the present invention; Figure 5 is a three-dimensional view of a partial structure of the present invention Figure 2 ; Figure 6 For the present invention Figure 3 a partially enlarged schematic view of area B in the present invention; Figure 7 For the present invention Figure 5 a partially enlarged schematic view of area C in the present invention; Figure 8 is a sectional view of a partial structure of the present invention; Figure 9 is a three-dimensional view of a partial structure of the present invention Figure 3 ; Reference numerals in the figure: 100, cornice frame; 1, rectangular opening pipe; 2, drain pipe; 3, rotating roller; 4, extension plate; 5, shunt pipe; 6, driving power source; 10, drain hole; 11, support rod; 12, cross bar; 13, inserting rod; 14, filter plate; 15, waterproof cover; 16, driving motor; 17, cam; 31, fan blade part; 32, disc; 33, magnet; 34, outer circular shell; 35, magnetic switch; 311, hopper-shaped plate; 312, panel; 313, covering plate; 314, through hole; 315, inclined plate; 316, water filtering hole; 317, receiving plate; 318, overflow hole; 131, fixing rod; 132, hollow plate; 133, thimble; 41, inner arc plate; 42, outer arc plate. Detailed implementation manners
[0019] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.
[0020] In addition, the terms used below are defined based on the functions in the present invention and may vary according to the intentions or conventions of users and operators. Therefore, these terms are defined based on the entire content of this specification.
[0021] Please refer to Figures 1 - 9 , a large-angle sloping roof drainage structure according to the present invention includes a rectangular opening pipe 1 installed on the cornice frame 100 at the top floor of a house. The rectangular opening pipe 1 is a component made of a metal material, and the top opening end of the rectangular opening pipe 1 is located on the extension line of the end of the sloping roof. In this embodiment, the straight-line type in the figure is taken as an example for illustration, and the actual direction of the rectangular opening pipe 1 is consistent with the designed route at the end of the sloping roof; A drain hole 10 is installed at the bottom of the rectangular open pipe 1, and a drain pipe 2 is connected to the bottom of each of the multiple drain holes 10. During rainy days, rainwater falls on the sloping roof and slides down under its own gravity into the rectangular open pipe 1, flows to the drain hole 10 and is discharged along the drain pipe 2; A rotating roller 3 is installed at the upper position inside the rectangular open pipe 1. A bearing is installed at the connection between the rotating roller 3 and the rectangular open pipe 1 to increase the smoothness of the rotation of the rotating roller 3 relative to the rectangular open pipe 1 and reduce the frictional damping when the two are in direct contact; A sealing silicone sleeve is rotatably sleeved outside the rotating roller 3, and one end of the sealing silicone sleeve is fixed to the inner wall of the rectangular open pipe 1. The sealing silicone sleeve externally seals the connection between the rotating roller 3 and the rectangular open pipe 1 to prevent rainwater from directly contacting components such as the bearing; A fan blade part 31 is circumferentially and fixedly installed on the outer circumference of the rotating roller 3. For example, in heavy rainfall weather, when rainwater passes through a large-angle sloping roof, the end part flows in a parabola towards the fan blade part 31, and the fan blade part 31 offsets the kinetic energy when the rainwater slides down, avoiding the rainwater directly impacting the inner wall of the rectangular open pipe 1, thereby preventing the rectangular open pipe 1 from being damaged or deformed; An extension plate 4 is arranged above the rotating roller 3. Both ends of the extension plate 4 are fixed to the inner wall of the rectangular open pipe 1. The extension plate 4 is welded in an S shape by two inner arc plates 41 and outer arc plates 42 of the same size. The inner arc plate 41 is concentrically arranged with the rotating roller 3, and the outer arc plate 42 is located above the rotating roller 3. The extension plate 4 effectively increases the lateral depth on one side of the top of the open end of the rectangular open pipe 1, and the extension plate 4 can effectively isolate the splashing rainwater when the rainwater flows towards the rectangular open pipe 1.
[0022] In another embodiment, refer to Figures 1 - 9 , the fan blade part 31 is composed of a bucket-shaped plate 311 and a panel 312. One end of the bucket-shaped plate 311 is welded to the outer wall of the rotating roller 3, and the panel 312 partially covers the open end of the bucket-shaped plate 311. When rainwater impacts on the fan blade part 31, part of the rainwater will pour into the interior of the bucket-shaped plate 311 for storage; The bottom end of the extension plate 4 is connected to a covering plate 313. A through hole 314 is opened at the bottom of the covering plate 313. The end of the covering plate 313 is connected to an inclined plate 315. The end of the inclined plate 315 is fixed to the inner wall of the rectangular open pipe 1. A plurality of water filtering holes 316 are uniformly distributed on the inclined plate 315. That is, the extension plate 4, the covering plate 313, and the inclined plate 315 divide the internal space of the rectangular open pipe 1 into two separate drainage areas, as shown by R and L in Figure 4 . During drainage operation, part of the rainwater will enter the L area through the water filtering holes 316 on the inclined plate 315, enter the drain pipe 2 through the drain hole 10 and be discharged; Similarly, part of the rainwater will directly impact the fan blade part 31. The fan blade part 31 storing rainwater rotates together with the rotating roller 3 under the action of the impact force. When the fan blade part 31 storing rainwater rotates to the through hole 314, the rotation direction is as shown by the F direction in Figure 8 . The stored rainwater slides into the L area; A receiving plate 317 is welded to the outer bottom wall of the covering plate 313. The receiving plate 317 is used to receive the rainwater that slides from the fan blade part 31 into the L area; The end of the receiving plate 317 abuts against the inner wall of the rectangular opening pipe 1. An overflow hole 318 is opened near the receiving plate 317 on the inner side of the rectangular opening pipe 1. A diversion pipe 5 is installed at the position of the outer wall of the rectangular opening pipe 1 opposite to the overflow hole 318. The bottom of the diversion pipe 5 is connected to the drain pipe 2 through a connecting pipe and a three-way valve. The rainwater on the receiving plate 317 will enter the drain pipe 2 through the overflow hole 318, the connecting pipe and the three-way valve and be discharged. In this way, the fan blade part 31 that can offset the impact force of the rainwater can also store part of the rainwater and transfer it, making the drainage channel of the rainwater two-way and effectively relieving the drainage pressure of a single channel.
[0023] In another embodiment, refer to Figures 1 - 9 . Support rods 11 are symmetrically installed at the top of the rectangular opening pipe 1. A cross bar 12 is inserted on the support rods 11, and the cross bar 12 can slide up and down along the outer wall of the support rods 11; A plug rod 13 is installed at the bottom of the cross bar 12 opposite to the drainage hole 10. One end of the plug rod 13 passes through the through hole 314 and is located inside the rectangular opening pipe 1. A filter plate 14 is installed at the bottom of the plug rod 13, and the filter plate 14 abuts in the drainage hole 10. Both the plug rod 13 and the filter plate 14 can move along with the support rod 11. Under normal conditions (i.e., non-heavy rainfall weather), the filter plate 14 abuts in the drainage hole 10, ensuring that the drainage hole 10 can drain water normally while playing a filtering role to prevent some sundries from entering the drain pipe 2 and causing blockage; Among them, the aperture of the water filtering hole 316 is larger than that of the filter plate 14. Through the aperture distribution from large to small from top to bottom, the effect of multi-stage filtering is achieved; A waterproof cover 15 is installed on the outer side wall of the rectangular opening pipe 1. A driving motor 16 is installed inside the waterproof cover 15. The output end of the driving motor 16 is connected to a cam 17. The outer wall of the cam 17 contacts but is not connected to the outer wall of the cross bar 12. In case of heavy rainfall, the user can control the driving motor 16 to work. After the driving motor 16 works, it drives the cam 17 to rotate. The rotated cam 17 moves along the cross bar 12 and applies a vertically upward thrust to it. Under the action of this thrust, the cross bar 12 moves reciprocally in the vertical direction, and the filter plate 14 is reciprocally separated from the drain hole 10. In this way, the intermittent separation of the filter plate 14 from the drain hole 10 can temporarily expand the effective area of the drain hole 10, increase the drainage flow rate, make the drainage smoother, reduce the risk of water overflow, and the intermittent separation design can let the large-flow rainwater wash away the debris on the filter plate 14, prevent the filter plate 14 from being blocked, and reduce the frequency of manual cleaning.
[0024] Furthermore, referring to Figures 1 - 9 , both ends of the rotating roller 3 protrude outside the two side walls of the rectangular opening pipe 1. One of the outer protruding ends of the rotating roller 3 is connected with a disc 32 through a concentric rod. Magnets 33 are embedded in the outer ring of the disc 32 at equal angles along the circumference. An outer circular shell 34 is arranged at the concentric position outside the disc 32. The outer circular shell 34 is fixed to the outer wall of the rectangular opening pipe 1 through bolts. A magnetic switch 35 is installed at the midline of the bottom of the outer circular shell 34. A counterweight is installed inside one of the hopper-shaped plates 311. In the initial state, that is, when the rotating roller 3 is in a stationary state, the hopper-shaped plate 311 with the counterweight is located directly below the rotating roller 3, and the extension line of the counterweight is located between two adjacent magnets 33, that is, no magnet 33 is directly above the magnetic switch 35 (i.e., the working station); The distance between two adjacent identical magnets 33 is greater than the size of the magnetic switch 35 itself. That is, among the above positions, the two magnets 33 closest to the magnetic switch 35 will not trigger its operation. Only when the magnet 33 is displaced directly above the magnetic switch 35 can it enter the working state; A driving power source 6 is installed on one side of the cornice bracket 100. The magnetic switch 35, the driving power source 6 and the driving motor 16 are electrically connected through wires. During specific operation, in case of heavy rainfall, the rotating roller 3 will inevitably rotate under the impact of rainwater. After the rotating roller 3 rotates and moves by an angle, the magnet 33 rotates to directly above the magnetic switch 35, and the circuit between the magnetic switch 35, the driving power source 6 and the driving motor 16 is connected. The driving power source 6 supplies power to the driving motor 16 to make it operate, and the filter plate 14 is intermittently separated from the drain hole 10. This method does not require manual adjustment on rainy days and can achieve automatic adjustment adaptively in case of heavy rainfall.
[0025] Similarly, a fixing rod 131 is fixedly installed on the inner side surface of the receiving plate 317. The end of the fixing rod 131 is fixedly connected to the hollow plate 132, and the hollow plate 132 is sleeved on the outer wall of the insertion rod 13. A thimble 133 is arranged at the bottom of the hollow plate 132. During the gap movement of the filter plate 14, its own filter holes will slide on the outer wall of the thimble 133. The thimble 133 scrapes and cleans the built-in filter holes of the plurality of filter plates 14, further improving the cleanliness of the filter plate 14, further improving the daily drainage efficiency and effect of the filter plate 14, and further reducing the regular cleaning frequency of personnel.
[0026] Furthermore, an epoxy resin bottom layer coating with a thickness of 10 - 50 microns is coated on both the inclined plate 315 and the fan blade part 31, and a polytetrafluoroethylene coating with a thickness of 20 - 100 microns is coated on the bottom layer coating, effectively improving the anti-sticking and erosion resistance properties of the surfaces of the inclined plate 315 and the fan blade part 31.
[0027] The above are only the embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.
Claims
1. A drainage structure for a large-angle sloped roof, comprising a rectangular open pipe (1) installed on a cornice frame (100) on the top floor of a house, characterized in that: The rectangular open tube (1) is a component made of metal material, and the top open end of the rectangular open tube (1) is located on the extension line of the end of the sloping roof. A drainage hole (10) is installed at the bottom of the rectangular open tube (1), and the bottoms of the plurality of drainage holes (10) are all connected to a drainage pipe (2); A rotating roller (3) is installed at an upper position inside the rectangular open tube (1), and a fan blade portion (31) is fixedly installed in the circumferential direction of the outer ring of the rotating roller (3); An extension plate (4) is arranged above the rotating roller (3), and both ends of the extension plate (4) are fixed to the inner wall of the rectangular open tube (1). The extension plate (4) is formed by two inner arc plates (41) and outer arc plates (42) of equal size welded in an S shape. The inner arc plate (41) is arranged concentrically with the rotating roller (3), and the outer arc plate (42) is located above the rotating roller (3).
2. A large-angle slope roof drainage structure according to claim 1, characterized in that: The fan blade portion (31) is composed of a bucket plate (311) and a panel (312). One end of the bucket plate (311) is welded to the outer wall of the rotating roller (3). The panel (312) partially covers the open end of the bucket plate (311). The bottom end of the extension plate (4) is connected to a covering plate (313). The bottom of the covering plate (313) is provided with a through hole (314). The end of the covering plate (313) is connected to an inclined plate (315). The end of the inclined plate (315) is fixed to the inner wall of the rectangular open tube (1). A plurality of water filtering holes (316) are evenly distributed on the inclined plate (315); a receiving plate (317) is welded to the outer side wall of the bottom of the cover plate (313); the end of the receiving plate (317) contacts the inner wall of the rectangular open tube (1); an overflow hole (318) is provided on the inner side of the rectangular open tube (1) near the receiving plate (317); a diverter pipe (5) is installed on the outer side wall of the rectangular open tube (1) directly opposite the overflow hole (318); the bottom of the diverter pipe (5) is connected to the drain pipe (2) via a connecting pipe and a three-way valve.
3. A large-angle slope roof drainage structure according to claim 2, characterized in that: A support rod (11) is symmetrically mounted on the top of the rectangular open tube (1), a cross rod (12) is inserted on the support rod (11), an insertion rod (13) is mounted on the bottom of the cross rod (12) at a position directly opposite to the drainage hole (10), and one end of the insertion rod (13) passes through the through hole (314) and is located inside the rectangular open tube (1), a filter plate (14) is mounted on the bottom of the insertion rod (13), and the filter plate (14) abuts against the drainage hole (10), a waterproof cover (15) is mounted on the outer wall of the rectangular open tube (1), a drive motor (16) is mounted inside the waterproof cover (15), an output end of the drive motor (16) is connected to a cam (17), and the outer wall of the cam (17) contacts but is not connected to the outer wall of the cross rod (12).
4. A large-angle slope roof drainage structure according to claim 3, characterized in that: The two ends of the rotating roller (3) are exposed to the outside of the two side walls of the rectangular open tube (1); one of the exposed end faces of the rotating roller (3) is connected to a disk (32) via a concentric rod; the outer ring of the disk (32) is embedded with magnets (33) at equal angles along the circumferential direction; an outer circular shell (34) is provided at a concentric position outside the disk (32); the outer circular shell (34) is fixed to the outer wall of the rectangular open tube (1) via bolts; a magnetic switch (35) is installed at the bottom center line of the outer circular shell (34); a driving power source (6) is installed on one side of the eaves frame (100); the magnetic switch (35), the driving power source (6) and the driving motor (16) are electrically connected via a wire; and a counterweight is installed inside one of the bucket-shaped plates (311).
5. A large-angle slope roof drainage structure according to claim 3, characterized in that: A fixing rod (131) is fixedly mounted on the inner side surface of the receiving plate (317), the end of the fixing rod (131) is fixedly connected to the hollow plate (132), and the hollow plate (132) is sleeved on the outer wall of the insertion rod (13), and a top pin (133) is provided at the bottom of the hollow plate (132).
6. A large-angle slope roof drainage structure according to claim 2, characterized in that: The surfaces of the inclined plate (315) and the fan blade portion (31) are coated with a layer of epoxy resin base coating with a thickness of 10-50 microns, and a layer of polytetrafluoroethylene coating with a thickness of 20-100 microns is coated on the base coating.
7. A large-angle slope roof drainage structure according to claim 1, characterized in that: A bearing is installed at the connection between the rotating roller (3) and the rectangular open tube (1); a sealing silicone sleeve is rotatably sleeved on the outer side of the rotating roller (3), and one end of the sealing silicone sleeve is fixed to the inner wall of the rectangular open tube (1).
8. A large-angle slope roof drainage structure according to claim 2, characterized in that: The pore size of the water filtering hole (316) is larger than the pore size of the filter plate (14).