Modular safety drainage and waste filtering device for building engineering roof

Abstract

The application relates to the field of building engineering construction and relates to a modularized safety drainage and garbage filtering device for a building engineering roof, which comprises a first filter screen arranged in a pre-buried rainwater pipe, a pull rod connected with the first filter screen, a flow guide mechanism for guiding rainwater in the pre-buried rainwater pipe, and a cleaning mechanism, the cleaning mechanism comprises a cleaning plate rotationally connected with the pull rod, the cleaning plate is located above the first filter screen and is in contact with the top surface of the first filter screen, a rotating blade is rotationally arranged on the pull rod, the rotating blade is rotated under the impact of water flow, a transmission mechanism is arranged on the pull rod, and the rotating blade drives the cleaning plate to rotate through the transmission mechanism. In the process that rainwater enters the pre-buried rainwater pipe, the rainwater impacts the rotating blade, the rotating blade is rotated, the rotating blade drives the cleaning plate to rotate, and the cleaning plate scrapes and cleans the garbage on the first filter screen, so that the problem that the subsequent pipeline is prone to blockage is solved without taking out the first filter screen.

Description

Technical Field

[0001] This invention relates to the field of building construction, and in particular to a modular safety drainage and garbage filtration device for building roofs. Background Technology

[0002] In large-scale construction projects, the period from the completion of the roof structure to the interior decoration and installation of the formal rainwater system often spans one or more rainy seasons. Currently, the commonly used temporary drainage solution in the industry involves temporarily connecting pipes to the pre-embedded roof rainwater hoppers (mostly made of plastic) for drainage, and placing filters above the roof rainwater hoppers to prevent gravel or debris from entering the pipes and causing blockages.

[0003] For related technology, please refer to Chinese Utility Model Patent No. CN219386521U, which discloses a drainage structure for interior design and decoration, including a main drainage pipe and a branch drainage pipe connected to the main drainage pipe. A folded pipe is fixedly connected to the branch drainage pipe, and a water control cylinder is provided on the folded pipe. A filter screen is placed inside the water control cylinder. Connecting rods are rotatably connected to both sides of the filter screen. A water control grate is fixedly installed between the two connecting rods. A hidden groove is opened on one side of the top of the water control grate, and a lifting piece is hinged to one side of the hidden groove. A water control pad ring is fixedly installed on the outer periphery of the top of the water control cylinder. By pinching the lifting piece and pulling the whole thing up, the water control grate and filter screen can be removed. After rotating the filter screen to pour out the debris, it can be cleaned.

[0004] Regarding the aforementioned technologies, when the rainy season has a large water flow and a lot of debris accumulates inside the filter cylinder, if the filter cylinder is not removed at this time, the rainwater will not be able to drain smoothly; if the filter cylinder is removed directly for cleaning, the unfiltered rainwater will flow directly into the drain pipe, which will still easily cause subsequent pipe blockage. Summary of the Invention

[0005] To address the problem of easy blockage in subsequent pipes, this invention provides a modular safety drainage and garbage filtration device for rooftops in building construction.

[0006] The present invention provides a modular safety drainage and garbage filtration device for building roofs, which adopts the following technical solution: A modular safety drainage and waste filtration device for building roofs includes a first filter screen installed in a pre-embedded rainwater pipe, a lifting rod connected to the first filter screen, a flow guiding mechanism for guiding rainwater in the pre-embedded rainwater pipe, and a cleaning mechanism. The cleaning mechanism includes a cleaning plate rotatably connected to the lifting rod, the cleaning plate being located above the first filter screen and in contact with the top surface of the first filter screen. A rotating blade is rotatably mounted on the lifting rod, the rotating blade rotating under the impact of water flow. A transmission mechanism is installed on the lifting rod, and the rotating blade drives the cleaning plate to rotate through the transmission mechanism.

[0007] Preferably, the first filter screen consists of two symmetrically arranged filter frames, and two limiting blocks are fixedly connected to the lifting rod. Each of the two filter frames has a limiting groove for the limiting blocks to be inserted. The two filter frames are connected by a locking component, and two cleaning plates are provided corresponding to the filter frames.

[0008] Preferably, the filter frame includes a frame body that fits against the inner wall of the pre-buried rainwater pipe and a filter plate that is slidably installed in the frame body. A first spring is fixedly connected between the filter plate and the frame body, and a plurality of protrusions opposite to the filter holes on the filter plate are fixedly connected to the bottom of the cleaning plate.

[0009] Preferably, the transmission mechanism includes an energy storage component connected to the rotating blade, an energy release component connected to the cleaning plate, and a control component for controlling the energy storage component to release kinetic energy to the energy release component. The rotating blade charges the energy storage component. When the water level on the first filter screen reaches a certain height, the control component is activated, and the energy release component drives the cleaning plate to rotate.

[0010] Preferably, the lifting rod is a hollow rod body, and the top of the lifting rod extends to the outside of the pre-buried rainwater pipe. An energy storage box is fixedly connected to one end of the lifting rod near the top. The energy storage box is connected to the interior of the lifting rod. The energy storage component includes a main spring placed in the energy storage box, an active rod rotatably installed in the lifting rod, and a driven ring rotatably installed in the energy storage box. The center end of the main spring is fixedly connected to the active rod, and the edge end of the main spring is connected to the driven ring. A check valve is installed on the active rod. The rotating blade is connected to the active rod through a first transmission component. A second transmission component is installed in the lifting rod, and the driven ring releases kinetic energy to the energy release component through the second transmission component.

[0011] Preferably, the control component includes a float for monitoring the water level on the first filter screen and a positioning component for locking the second transmission component. The float is slidably mounted on the lifting rod, and the float is connected to the energy-releasing component via a connector. When the float rises to a certain height, the positioning component is unlocked, and the connector is connected to the second transmission component.

[0012] Preferably, a secondary mainspring is fixedly connected to the edge end of the mainspring, and the secondary mainspring is in contact with the driven ring.

[0013] Preferably, a cover plate is installed at one end of the lifting rod near the top, the cover plate is located above the energy storage box, and the diameter of the cover plate is larger than the diameter of the pre-buried rainwater pipe.

[0014] Preferably, a second filter screen is installed on the lifting rod, the second filter screen is located below the first filter screen, and the diameter of the filter holes on the second filter screen is smaller than the diameter of the filter holes on the first filter screen.

[0015] Preferably, the anti-return element includes a ratchet fixedly connected to the drive rod and a pawl rotatably installed in the lifting rod. The pawl cooperates with the ratchet, and a torsion spring is sleeved on the rotating shaft installed in the pawl.

[0016] In summary, the present invention has at least the following beneficial technical effects: 1. During the process of rainwater entering the pre-buried rainwater pipe, the rainwater impacts the rotating blades, causing them to rotate. The rotating blades drive the cleaning plate to rotate through the transmission mechanism. The cleaning plate scrapes up the debris on the first filter screen and piles it up, thus preventing the first filter screen from clogging. The first filter screen can be cleaned during the process of rainwater entering without having to remove it, thereby solving the problem of easy clogging of subsequent pipes. 2. When there is a lot of garbage in the filter box, remove the lifting rod from the pre-buried rainwater pipe. The lifting rod will move the two filter boxes out of the pre-buried rainwater pipe. Simply unlock the locking parts to remove the two filter boxes from the lifting rod, which is convenient for the staff to operate. 3. During the rotation of the cleaning plate, the cleaning plate drives the protrusion to move. The protrusion can squeeze out the garbage in the filter holes of the filter plate. At the same time, the protrusion and the first spring work together to drive the filter plate to shake, further preventing the first filter screen from clogging. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a modular safety drainage and garbage filtration device for building roofs according to an embodiment of the present invention.

[0018] Figure 2 This is a cross-sectional structural diagram of the pre-buried rainwater pipe according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the second filter screen according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the first filter screen according to an embodiment of the present invention.

[0021] Figure 5This is a schematic diagram of the energy storage component according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the main spring structure according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the structure of the first transmission component according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the cleaning mechanism according to an embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of the energy-releasing component according to an embodiment of the present invention.

[0026] Figure 10 This is a schematic diagram of the positioning component according to an embodiment of the present invention.

[0027] Figure 11 This is a schematic diagram of the locking component according to an embodiment of the present invention.

[0028] Figure 12 This is a schematic diagram of the structure of the filter frame according to an embodiment of the present invention.

[0029] Figure 13 This is the present invention. Figure 11 An enlarged structural diagram of part A in the diagram.

[0030] Figure 14 This is a schematic diagram of the flow guiding mechanism according to an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached drawings: 1. Pre-embedded rainwater pipe; 2. First filter screen; 21. Filter frame; 211. Frame body; 212. Filter plate; 213. First spring; 22. Fixing block; 23. Locking block; 24. Locking spring; 25. Pressing block; 3. Lifting rod; 31. Rotating blade; 32. Limiting block; 33. Energy storage box; 34. Cover plate; 35. Second filter screen; 36. First rotating ring; 361. Internal gear ring; 37. First rotating shaft; 371. First gear; 4. Flow guiding mechanism; 41. Metal sleeve; 42. Turnbuckle; 43. Flow guiding hose; 5. Cleaning mechanism; 51. Cleaning plate; 511. Protrusion; 6. 7. Energy storage components; 61. Mainspring; 62. Driving lever; 621. Ratchet; 622. Pawl; 623. Driving gear; 63. Driven ring; 631. External gear ring; 64. Secondary spring; 65. Second shaft; 651. Second gear; 66. Third shaft; 67. Fourth shaft; 7. Energy release components; 71. Rotating rod; 72. Rotating plate; 73. Rotating torsion spring; 74. Connecting rod; 75. Telescopic shaft; 76. Magnet; 77. Iron block; 8. Control components; 81. Float; 82. Sliding rod; 83. Square rod; 84. Positioning cylinder; 85. Positioning rod; 86. Positioning spring; 87. Snap-fit ​​rod. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 -Appendix Figure 14 The present invention will be described in further detail below.

[0033] This invention discloses a modular safety drainage and waste filtration device for building roofs. (See reference...) Figures 1 to 3 The system includes a first filter screen 2 installed in a pre-buried rainwater pipe 1, a lifting rod 3 connected to the first filter screen 2, a flow guiding mechanism 4 for guiding rainwater flow in the pre-buried rainwater pipe 1, and a cleaning mechanism 5. The cleaning mechanism 5 includes a cleaning plate 51 rotatably connected to the lifting rod 3. The cleaning plate 51 is located above the first filter screen 2 and in contact with the top surface of the first filter screen 2. A rotating blade 31 is rotatably installed on the lifting rod 3. The rotating blade 31 rotates due to the impact of water flow. A transmission mechanism is installed on the lifting rod 3, and the rotating blade 31 drives the cleaning plate 51 to rotate through the transmission mechanism. During the process of rainwater entering the pre-buried rainwater pipe 1, the rainwater impacts the rotating blade 31, causing the rotating blade 31 to rotate. The rotating blade 31 drives the cleaning plate 51 to rotate through the transmission mechanism. The cleaning plate 51 scrapes up the debris on the first filter screen 2 and piles the debris together, thereby preventing the first filter screen 2 from clogging. The first filter screen 2 can be cleaned during the process of rainwater entering without removing the first filter screen 2, thus solving the problem of easy blockage of subsequent pipes.

[0034] Reference Figures 4 to 9 The first filter screen 2 consists of two symmetrically arranged filter frames 21. Two limiting blocks 32 are fixedly connected to the lifting rod 3. Each of the two filter frames 21 has a limiting groove for the limiting blocks 32 to be inserted. The two filter frames 21 are connected by a locking component. Two cleaning plates 51 are provided corresponding to the filter frames 21. When there is a lot of garbage in the filter frames 21, the lifting rod 3 is taken out from the pre-buried rainwater pipe 1. The lifting rod 3 drives the two filter frames 21 to move out of the pre-buried rainwater pipe 1. Only by unlocking the locking component can the two filter frames 21 be removed from the lifting rod 3, which is convenient for the staff to operate.

[0035] Reference Figures 3 to 12 The filter frame 21 includes a frame body 211 that fits against the inner wall of the pre-buried rainwater pipe 1 and a filter plate 212 that is slidably installed in the frame body 211. A first spring 213 is fixedly connected between the filter plate 212 and the frame body 211. A plurality of protrusions 511 opposite to the filter holes on the filter plate 212 are fixedly connected to the bottom of the cleaning plate 51. During the rotation of the cleaning plate 51, the cleaning plate 51 drives the protrusions 511 to move. The protrusions 511 can squeeze out the garbage in the filter holes on the filter plate 212. At the same time, the protrusions 511 and the first spring 213 cooperate with each other to drive the filter plate 212 to shake, further preventing the first filter screen 2 from clogging.

[0036] Reference Figures 11 to 13 The locking component includes a fixing block 22 fixedly connected to one of the frames 211, and a fixing groove for the fixing block 22 to be inserted into the other frame 211. An installation groove is formed on the inner wall of the fixing groove, and a locking block 23 is slidably installed in the installation groove. A locking spring 24 is fixedly connected between the inner wall of the installation groove and the locking block 23. A locking groove for the locking block 23 to be inserted into is formed on the fixing block 22. A locking bevel is formed on the end face of the locking block 23 facing the fixing block 22, which contacts the side of the fixing block 22. A pressing block 25 extending into the installation groove is provided on the frame 211. A pressing groove for the pressing block 25 to be inserted into is formed on the locking block 23. A pressing bevel is formed on the inner wall of the pressing groove near the locking spring 24, which contacts the pressing block 25. When the pressing block 25 is pressed, the pressing block 25 pushes the locking block 23 out of the locking groove through the pressing bevel, thereby disassembling the two filter frames 21.

[0037] Reference Figures 4 to 9 The transmission mechanism includes an energy storage component 6 connected to the rotating blade 31, an energy release component 7 connected to the cleaning plate 51, and a control component 8 for controlling the energy storage component 6 to release kinetic energy to the energy release component 7. The rotating blade 31 rotates to charge the energy storage component 6. When the water level on the first filter screen 2 reaches a certain height, the control component 8 is activated, and the energy release component 7 drives the cleaning plate 51 to rotate. During the process of rainwater entering the pre-buried rainwater pipe 1, the rotating blade 31 rotates and charges the energy storage component 6. At this time, there is not much garbage on the first filter screen 2, and the rainwater passes directly through the first filter screen 2. When the garbage on the first filter screen 2 increases, the water level on the first filter screen 2 gradually rises. When the water level on the first filter screen 2 reaches a certain height, the control component 8 is activated, and the energy storage component 6 releases kinetic energy to the energy release component 7. The energy release component 7 can then drive the cleaning plate 51 to rotate, cleaning the garbage on the first filter screen 2 and converting the unstable kinetic energy of the water flow impact into the stable rotation of the cleaning plate 51.

[0038] Reference Figures 3 to 9The lifting rod 3 is a hollow rod body. Multiple support plates for strengthening the lifting rod 3 are fixedly connected inside it. The top of the lifting rod 3 extends to the outside of the pre-buried rainwater pipe 1. An energy storage box 33 is fixedly connected to one end of the lifting rod 3 near the top. The energy storage box 33 is internally connected to the lifting rod 3. The energy storage component 6 includes a main spring 61 placed in the energy storage box 33, an active rod 62 rotatably installed in the lifting rod 3, and a driven ring 63 rotatably installed in the energy storage box 33. The center end of the main spring 61 is fixedly connected to the active rod 62. The axis of the active rod 62 is the same as the axis of the lifting rod 3. The active rod 62 is rotatably connected to the support plate. The edge end of the main spring 61 is... The driven ring 63 is connected, and a check valve is installed on the drive rod 62. The rotating blade 31 is connected to the drive rod 62 through the first transmission component. A second transmission component is installed in the lifting rod 3. The driven ring 63 releases kinetic energy to the energy release component 7 through the second transmission component. During the process of rainwater entering the pre-buried rainwater pipe 1, the rotating blade 31 rotates. The rotating blade 31 drives the drive rod 62 to rotate through the first transmission component. The drive rod 62 applies a force to the main spring 61, causing the main spring 61 to tighten. When the water level on the first filter screen 2 reaches a certain height, the control component 8 is activated. The driven ring 63 releases kinetic energy to the energy release component 7 through the second transmission component, thereby driving the cleaning plate 51 to rotate.

[0039] A secondary mainspring 64 is fixedly connected to the edge end of the mainspring 61, and the secondary mainspring 64 contacts the driven ring 63. There is sliding friction between the secondary mainspring 64 and the driven ring 63. When the mainspring 61 is tightened inward, the contact area between the secondary mainspring 64 and the driven ring 63 gradually decreases. When the mainspring 61 is tightened to the maximum extent, the secondary mainspring 64 and the driven ring 63 slide relative to each other, which will not cause the mainspring 61 to break.

[0040] The anti-reverse component includes a ratchet 621 fixedly connected to the drive rod 62 and a pawl 622 rotatably installed in the lifting rod 3. The pawl 622 cooperates with the ratchet 621 and is rotatably connected to the support plate. A torsion spring is sleeved on the rotating shaft installed in the pawl 622. The pawl 622 limits the ratchet 621, thereby limiting the drive rod 62 and preventing the drive rod 62 from rotating and damaging the main spring 61.

[0041] The control component 8 includes a float 81 for monitoring the water level on the first filter screen 2 and a positioning component for locking the second transmission component. The float 81 is slidably mounted on the lifting rod 3. The float 81 is connected to the energy release component 7 through a connector. When the float 81 rises to a certain height, the positioning component unlocks, and the connector connects to the second transmission component. As the water level on the first filter screen 2 gradually rises, the float 81 gradually moves upward under the action of buoyancy. The float 81 drives the connector to move. When the float 81 rises to a certain height, the connector connects to the second transmission component, and at the same time, the positioning component releases the lock on the second transmission component. The driven ring 63 can then release kinetic energy to the energy release component 7 through the second transmission component and the connector.

[0042] Reference Figures 4 to 7 The first transmission component includes a first rotating ring 36 rotatably mounted on the lifting rod 3. The axis of the first rotating ring 36 is the same as the axis of the lifting rod 3. The first rotating ring 36 extends into the interior of the lifting rod 3. Multiple rotating blades 31 are provided, and all of the multiple rotating blades 31 are bolted to the first rotating ring 36. An internal gear ring 361 is fixedly connected to the inner circumferential surface of the first rotating ring 36. A first rotating shaft 37 is rotatably mounted in the lifting rod 3. A first gear 371 that meshes with the internal gear ring 361 is fixedly connected to the first rotating shaft 37. The first rotating shaft 37 is rotatably connected to the support plate. A drive gear 623 that meshes with the first gear 371 is fixedly connected to the drive rod 62. The rotating blades 31 drive the first rotating ring 36 to rotate, the first rotating ring 361 drives the internal gear ring 361 to rotate, the internal gear ring 361 drives the first gear 371 to rotate, the first gear 371 drives the drive gear 623 to rotate, and the drive gear 623 drives the drive rod 62 to rotate, thus storing energy.

[0043] Reference Figures 5 to 9 The second transmission component includes a second rotating shaft 65 rotatably mounted in the energy storage box 33 and a third rotating shaft 66 rotatably mounted in the lifting rod 3. The third rotating shaft 66 is rotatably connected to the support plate. An external gear ring 631 is fixedly connected to the driven ring 63. A second gear 651 that meshes with the external gear ring 631 is fixedly connected to the second rotating shaft 65. The second rotating shaft 65 and the third rotating shaft 66 are connected by a conveyor belt. A fourth rotating shaft 67 is rotatably mounted on the support plate. The fourth rotating shaft 67 is driven by a gear set to drive the third rotating shaft 66. The fourth rotating shaft 67 is coaxial with the lifting rod 3. A positioning component locks the fourth rotating shaft 67. When the lock on the fourth rotating shaft 67 is released, the driven ring 63 drives the external gear ring 631 to rotate. The external gear ring 631 drives the second gear 651 to rotate. The second gear 651 drives the second rotating shaft 65 to rotate. The second rotating shaft 65 drives the third rotating shaft 66 to rotate. The third rotating shaft 66 drives the fourth rotating shaft 67 to rotate.

[0044] Reference Figures 8 to 11The energy-releasing component 7 includes a rotating rod 71 rotatably mounted on a support plate, coaxial with the lifting rod 3. A rotating plate 72 is fixedly connected to the rotating rod 71, and a rotating torsion spring 73 is fixedly connected between the rotating plate 72 and the support plate. Two arc-shaped openings are formed on the circumference of the lifting rod 3. Two opposing connecting rods 74 are fixedly connected to the rotating plate 72. The two connecting rods 74 extend through the arc-shaped openings to the outside of the lifting rod 3. A sealing ring is fixedly connected between the two connecting rods 74 to seal the arc-shaped openings. Arc-shaped notches for the connecting rods 74 to pass through are formed on the side walls of the two frame bodies 211. Two cleaning plates 51 are respectively bolted to the connecting rods 74. A telescopic shaft 75 is rotatably mounted on the support plate, coaxial with the lifting rod 3. A magnet 76 is fixedly connected to the bottom of the telescopic shaft 75, and an iron block 77 that attracts the magnet 76 is fixedly connected to the rotating plate 72. When the telescopic shaft 75 is rotated, the telescopic shaft 75 drives the magnet 76 to rotate, the magnet 76 drives the iron block 77 to rotate, the iron block 77 drives the rotating plate 72 to rotate, the rotating plate 72 drives the connecting rod 74 to rotate, and the connecting rod 74 drives the cleaning plate 51 to rotate. At the same time, the rotating plate 72 applies a force to the rotary torsion spring 73. When the rotary torsion spring 73 reaches its maximum torque, the magnet 76 separates from the iron block 77, and the rotary torsion spring 73 drives the rotating plate 72 to rotate in the reverse direction, thus realizing the reciprocating swing of the cleaning plate 51. When the magnet 76 attracts the iron block 77 again, the magnet 76 drives the rotating plate 72 to continue rotating in the forward direction, thus realizing the continuous reciprocating swing of the cleaning plate 51.

[0045] Reference Figures 8 to 10 A sliding hole is provided on the circumference of the lifting rod 3, and a sliding rod 82 is slidably installed in the sliding hole. One end of the sliding rod 82 is fixedly connected to the float plate 81, and the other end of the sliding rod 82 is fixedly connected to the top of the telescopic rotating shaft 75. A sealing plate is fixedly connected to the sliding rod 82, which can seal the sliding hole. A square rod 83 is fixedly connected to the top of the telescopic rotating shaft 75, and a square groove for the square rod 83 to be inserted is provided at the bottom of the fourth rotating shaft 67. When the float plate 81 rises to a certain height, the float plate 81 drives the sliding rod 82 to move, the sliding rod 82 drives the top of the telescopic rotating shaft 75 to move, and the telescopic rotating shaft 75 drives the square rod 83 to be inserted into the square groove. The fourth rotating shaft 67 can then drive the telescopic rotating shaft 75 to rotate.

[0046] The positioning component includes a positioning cylinder 84 fixedly connected to the lifting rod 3, a positioning rod 85 passing through the positioning cylinder 84, a positioning spring 86 fixedly connected between the positioning rod 85 and the inner wall of the positioning cylinder 84, a positioning hole for the positioning rod 85 to be inserted into the fourth rotating shaft 67, a snap-fit ​​rod 87 slidably installed in the positioning hole, the snap-fit ​​rod 87 contacting the positioning rod 85, the end of the snap-fit ​​rod 87 away from the positioning rod 85 is formed with a hemispherical surface, the hemispherical surface extends into a square groove, the square rod 83 can contact the hemispherical surface and can push the snap-fit ​​rod 87 to move, the snap-fit ​​rod 87 pushes the positioning rod 85 to move, so that the positioning rod 85 disengages from the positioning hole, and the fourth rotating shaft 67 can then rotate.

[0047] Reference Figure 2 and Figure 3 A cover plate 34 is installed at one end of the lifting rod 3 near the top. The cover plate 34 is fitted onto the lifting rod 3. Nuts that are threaded to the lifting rod 3 are provided on both the upper and lower sides of the cover plate 34. The cover plate 34 is located above the energy storage box 33. The diameter of the cover plate 34 is larger than the diameter of the pre-buried rainwater pipe 1. Two metal plates are fixedly connected to the bottom of the cover plate 34. The metal plates limit the cover plate 34 laterally. When the weather is sunny, the cover plate 34 can cover the inlet of the pre-buried rainwater pipe 1 to prevent garbage from entering the pre-buried rainwater pipe 1.

[0048] A second filter screen 35 is installed on the lifting rod 3. The second filter screen 35 is sleeved on the lifting rod 3. Nuts that are threaded to the lifting rod 3 are provided on both the upper and lower sides of the second filter screen 35. The second filter screen 35 is located below the first filter screen 2. The diameter of the filter holes on the second filter screen 35 is smaller than the diameter of the filter holes on the first filter screen 2. The second filter screen 35 can filter out small debris in rainwater.

[0049] Reference Figure 2 and Figure 14The flow guiding mechanism 4 includes a metal sleeve 41, two turnbuckles 42, and a flow guiding hose 43. The metal sleeve 41 is fitted onto the bottom of the pre-embedded rainwater pipe 1, with a gap between the metal sleeve 41 and the pre-embedded rainwater pipe 1. High-performance elastic sealing rubber rings are provided at the upper and lower parts of the metal sleeve 41 and the pre-embedded rainwater pipe 1. The top of the metal sleeve 41 contacts the concrete floor slab, and two expansion hooks are pre-embedded in the concrete floor slab. The two expansion hooks are located on both sides of the metal sleeve 41. Two opposing connecting ears are welded onto the metal sleeve 41. The two turnbuckles 42... The ends are respectively connected to the connecting ear plate and the expansion hook. The flow guide hose 43 is sleeved on the bottom of the metal sleeve 41. The metal sleeve 41 has a recessed groove. The flow guide hose 43 is pressed into the recessed groove. The outer side of the flow guide hose 43 is sleeved with an elastic tube clamp that is pressed into the recessed groove. The flow guide hose 43 flips down to the bottom of the metal sleeve 41. The elastic tube clamp presses the flipped flow guide hose 43 onto the metal sleeve 41 again. The flow guide hose 43 flips up again to the top of the metal sleeve 41. The elastic tube clamp presses the flipped flow guide hose 43 onto the metal sleeve 41 again.

[0050] The implementation principle of a modular safety drainage and garbage filtration device for building roofs according to an embodiment of the present invention is as follows: When rainwater enters the pre-buried rainwater pipe 1, the rainwater impacts the rotating blade 31, causing the rotating blade 31 to rotate. The rotating blade 31 drives the first rotating ring 36 to rotate, which in turn drives the active rod 62 to rotate. The active rod 62 applies force to the main spring 61, causing it to tighten. At this time, the positioning rod 85 is inserted into the positioning hole on the fourth rotating shaft 67, limiting the fourth rotating shaft 67. The fourth rotating shaft 67 limits the driven ring 63. As the garbage on the first filter screen 2 gradually increases, the water level on the first filter screen 2 gradually rises. The float 81 gradually rises under the action of buoyancy. The float 81 drives the sliding rod 82 to move, and the sliding rod 82 drives the square rod 83 to move upward. When the square rod 83 is inserted into the square groove, the square rod... 83 contacts the hemispherical surface and pushes the locking rod 87 to move. The locking rod 87 pushes the positioning rod 85 out of the positioning hole, releasing the limit on the fourth rotating shaft 67. At this time, the main spring 61 drives the driven ring 63 to rotate, the driven ring 63 drives the fourth rotating shaft 67 to rotate, the fourth rotating shaft 67 drives the telescopic rotating shaft 75 to rotate, the telescopic rotating shaft 75 drives the magnet 76 to rotate, the magnet 76 drives the iron block 77 to rotate, the iron block 77 drives the rotary plate 72 to rotate, the rotary plate 72 drives the connecting rod 74 to rotate, the connecting rod 74 drives the cleaning plate 51 to rotate, and at the same time, the rotary plate 72 applies a force to the rotary torsion spring 73. When the rotary torsion spring 73 reaches its maximum torque, the magnet 76 separates from the iron block 77, and the rotary torsion spring 73 drives the rotary plate 72 to rotate in reverse, causing the cleaning plate 51 to swing back and forth, pushing the garbage on the first filter screen 2 to both sides, thereby preventing the first filter screen 2 from clogging.

[0051] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A modular safety drainage and garbage filtration device for rooftops of building projects, comprising a first filter screen (2) installed in a pre-embedded rainwater pipe (1), a lifting rod (3) connected to the first filter screen (2), a flow guiding mechanism (4) for guiding rainwater in the pre-embedded rainwater pipe (1), and a cleaning mechanism (5), characterized in that: The cleaning mechanism (5) includes a cleaning plate (51) rotatably connected to the lifting rod (3). The cleaning plate (51) is located above the first filter screen (2) and in contact with the top surface of the first filter screen (2). A rotating blade (31) is rotatably mounted on the lifting rod (3). The rotating blade (31) rotates due to the impact of water flow. A transmission mechanism is mounted on the lifting rod (3). The rotating blade (31) drives the cleaning plate (51) to rotate through the transmission mechanism.

2. The modular safety drainage and garbage filtration device for building roofs according to claim 1, characterized in that: The first filter screen (2) consists of two symmetrically arranged filter frames (21). Two limiting blocks (32) are fixedly connected to the lifting rod (3). The two filter frames (21) are respectively provided with limiting grooves for the limiting blocks (32) to be inserted. The two filter frames (21) are connected by a locking component. The cleaning plate (51) is provided with two corresponding filter frames (21).

3. A modular safety drainage and waste filtration device for building roofs according to claim 2, characterized in that: The filter frame (21) includes a frame (211) that fits against the inner wall of the pre-embedded rainwater pipe (1) and a filter plate (212) that is slidably installed in the frame (211). A first spring (213) is fixedly connected between the filter plate (212) and the frame (211). A plurality of protrusions (511) opposite to the filter holes on the filter plate (212) are fixedly connected to the bottom of the cleaning plate (51).

4. A modular safety drainage and waste filtration device for building roofs according to claim 1, characterized in that: The transmission mechanism includes an energy storage component (6) connected to the rotating blade (31), an energy release component (7) connected to the cleaning plate (51), and a control component (8) for controlling the energy storage component (6) to release kinetic energy to the energy release component (7). The rotating blade (31) rotates to charge the energy storage component (6). When the water level on the first filter screen (2) reaches a certain height, the control component (8) is activated, and the energy release component (7) drives the cleaning plate (51) to rotate.

5. A modular safety drainage and waste filtration device for building roofs according to claim 4, characterized in that: The lifting rod (3) is a hollow rod body, and the top of the lifting rod (3) extends to the outside of the pre-buried rainwater pipe (1). The lifting rod (3) is fixedly connected to an energy storage box (33) near the top. The energy storage box (33) is connected to the interior of the lifting rod (3). The energy storage component (6) includes a main spring (61) placed in the energy storage box (33), an active rod (62) rotatably installed in the lifting rod (3), and a driven ring (63) rotatably installed in the energy storage box (33). The center end of the main spring (61) is fixedly connected to the active rod (62), and the edge end of the main spring (61) is connected to the driven ring (63). A check valve is installed on the active rod (62). The rotating blade (31) is connected to the active rod (62) through a first transmission component. A second transmission component is installed in the lifting rod (3). The driven ring (63) releases kinetic energy to the energy release component (7) through the second transmission component.

6. A modular safety drainage and waste filtration device for building roofs according to claim 5, characterized in that: The control component (8) includes a float (81) for monitoring the water level on the first filter screen (2) and a positioning component for locking the second transmission component. The float (81) is slidably mounted on the lifting rod (3). The float (81) is connected to the energy release component (7) through a connector. When the float (81) rises to a certain height, the positioning component is unlocked, and the connector is connected to the second transmission component.

7. A modular safety drainage and waste filtration device for building roofs according to claim 5, characterized in that: The main spring (61) is fixedly connected to the edge end of the auxiliary spring (64), and the auxiliary spring (64) is in contact with the driven ring (63).

8. A modular safety drainage and waste filtration device for building roofs according to claim 5, characterized in that: The lifting rod (3) has a cover plate (34) installed at one end near the top. The cover plate (34) is located above the energy storage box (33), and the diameter of the cover plate (34) is larger than the diameter of the pre-buried rainwater pipe (1).

9. A modular safety drainage and waste filtration device for building roofs according to claim 1, characterized in that: A second filter screen (35) is installed on the lifting rod (3). The second filter screen (35) is located below the first filter screen (2). The diameter of the filter holes on the second filter screen (35) is smaller than the diameter of the filter holes on the first filter screen (2).

10. A modular safety drainage and waste filtration device for building roofs according to claim 5, characterized in that: The check valve includes a ratchet (621) fixedly connected to the drive rod (62) and a pawl (622) rotatably installed in the lifting rod (3). The pawl (622) cooperates with the ratchet (621), and a torsion spring is sleeved on the rotating shaft installed in the pawl (622).

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