A gully leaf automatic cleaning device and early warning system

Abstract

The present invention discloses an automatic cleaning device for fallen leaves in a rainwater outlet and an early warning system, which belongs to the technical field of fallen leaf cleaning in rainwater outlets. The device comprises a cleaning part which is installed inside a gutter and can move back and forth, and side walls at both ends of the gutter are installed with baffles which are controlled to open and close by the cleaning part, and the baffles and the cleaning part perform an initial squeeze out of moisture in fallen leaves that fall into the gutter, and drainage pipes are installed at both ends of the gutter, and receiving frames are installed below both ends of the gutter, and an extrusion plate which moves synchronously with the baffles and is used for a secondary squeezing of moisture in fallen leaves is installed inside the receiving frame, and the inner end of the receiving frame is communicated with the drainage pipe through a filtering mechanism, and the lower side wall of the receiving frame is arranged to be openable and closable, and the lower side wall of the receiving frame is an inclined surface which is low inside and high outside, and is used for discharging the squeezed fallen leaves.

Description

Technical Field

[0001] The invention relates to an automatic cleaning device for fallen leaves in a rainwater outlet and an early warning system, belonging to the technical field of fallen leaves cleaning in rainwater outlets. Background Art

[0002] When it rains, the eaves gutters installed on the roof play a role in guiding the flow of rain on the roof, so that the rainwater falling on the roof can be drained smoothly through the downpipes. However, occasionally, fallen leaves and other debris fall into the inside of the eaves gutters, causing the eaves gutters to be blocked, resulting in the rainwater not being discharged in time. In order to solve the problem of eaves gutters being blocked by fallen leaves, some fallen leaf cleaning solutions have emerged. However, these solutions only clean the fallen leaves out of the inside of the eaves gutters. However, the fallen leaves are soaked in water and there will inevitably be a certain amount of moisture left inside. When cleaning the fallen leaves, the rainwater inside the eaves gutters will also be cleaned out, which increases the workload for subsequent processing. In order to solve the above problems, the present invention provides an automatic cleaning device and an early warning system for fallen leaves in rainwater outlets. Summary of the Invention

[0003] In response to the problems existing in the above-mentioned prior art, the present invention provides an automatic rainwater inlet leaf cleaning device and an early warning system, which can squeeze out the moisture inside the fallen leaves while cleaning the fallen leaves, making subsequent processing work convenient.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an automatic cleaning device for fallen leaves in a rainwater outlet, comprising a cleaning part that is installed inside the eaves gutter and can move back and forth, the cleaning part is tightly fitted with the inner wall of the eaves gutter, and both end side walls of the eaves gutter are installed with baffles that are controlled to open and close by the cleaning part, and the baffles and the cleaning part initially squeeze out the moisture in the fallen leaves that fall into the eaves gutter, and when the cleaning part pushes the fallen leaves to move to the end of the eaves gutter, the corresponding baffles will be opened, so that the fallen leaves pushed by the cleaning part can fall smoothly from the inside of the eaves gutter, and both ends of the eaves gutter are installed with drainage pipes, and a filter is installed at the connection between the drainage pipe and the eaves gutter and inside the eaves gutter to prevent the fallen leaves from clogging. Drain pipe, receiving frames are installed under both ends of the eaves gutter, and fallen leaves from the inside of the eaves gutter will enter the inside of the receiving frame, and an extrusion plate is installed inside the receiving frame for secondary squeezing of the moisture inside the fallen leaves, which moves synchronously with the baffle door. When the baffle door is closed, the extrusion plate will secondary squeeze the moisture inside the fallen leaves. The inner end of the receiving frame is connected to the drain pipe through a filtering mechanism, and the filtering mechanism is installed on the inner end side wall of the receiving frame. The lower side wall of the receiving frame is set to be openable and closable, and the lower side wall of the receiving frame is an inclined surface with a low inside and a high outside, which is used to discharge the squeezed fallen leaves. The staff can regularly open the lower side wall of the receiving frame to take out the squeezed fallen leaves for subsequent processing.

[0005] Preferably, the outer side surface of the baffle is fixedly connected with a connecting rod, and the connecting rod is connected to the extrusion plate. When the baffle moves, the extrusion plate will be driven to move together through the connecting rod, and a first spring is connected between the connecting rod and the inner side wall of the outer end of the receiving frame, and the first spring has a clamping force to press the connecting rod toward the eaves gutter. Under the action of the clamping force of the first spring, the cleaning part needs to apply a certain force to the baffle to open the baffle. At this time, the cleaning part will cooperate with the baffle to extrude the fallen leaves for the first time.

[0006] Preferably, the connecting rod is connected to the extrusion plate by a second spring fixedly connected thereto, and the second spring has an elastic force to press the extrusion plate toward the inner end of the receiving frame. When the extrusion plate is affected by the volume of fallen leaves and cannot return to its original position, the second spring will contract to compensate for the movement of the extrusion plate, so that the baffle door can be smoothly closed under the action of the pressing force of the first spring. A rubber membrane is connected between the extrusion plate and the baffle door, and the rubber membrane can produce elastic deformation, so that leaves falling from the inside of the eaves gutter can smoothly enter between the extrusion plate and the corresponding inner end side wall of the receiving frame.

[0007] Preferably, a sliding groove is provided on the inner side surface of the receiving frame, and the sliding groove is parallel to the lower side wall of the receiving frame. A fixed block adapted to the sliding groove is fixedly connected to the extrusion plate. The setting of the sliding groove and the fixed block can make the extrusion plate always fit with the lower side wall of the receiving frame when sliding inside the receiving frame.

[0008] Preferably, the cleaning part is threadedly connected to the screw, and both ends of the screw extend to the outside of the eaves gutter through the through holes provided on the corresponding baffle door. The inner side wall of the through hole is a smooth surface. The baffle door is slidingly connected to the screw through the through hole, and one end of the screw is driven by a motor installed on the receiving frame, and the other end is rotatably connected to a fixed plate installed on another receiving frame. Support frames are respectively installed on the two receiving frames, and the motor and the fixed plate are respectively installed on the corresponding support frames.

[0009] Preferably, both ends of the screw are provided with empty grooves, and sliding rods are symmetrically provided inside the empty grooves, and a spring plate is connected between the two sliding rods located in the same empty groove, and the spring plate has a pressing force to push the two sliding rods in a direction away from each other. The outer end of the sliding rod is fixedly connected to a clamping block, and the inner end is fixedly connected to an extrusion block. The inner side surface of the clamping block is an inclined surface with a low inner side and a high outer side, and the upper side surface of the extrusion block is an inclined surface with a high middle and low two ends. When the extrusion plate pushes the corresponding baffle door to move in the direction away from the eaves gutter, the cleaning part will smoothly pass over the extrusion block to push the baffle door, and the baffle door will smoothly pass over the clamping block.

[0010] Preferably, the cleaning portion is in a "︿" shape, and the inner side surface of the barrier door is adapted to the side surface of the cleaning portion. The cleaning portion adopts this shape to better push the fallen leaves inside the eaves gutter. Filter holes are provided on both side surfaces of the cleaning portion. The setting of the filter holes can allow the squeezed water to flow smoothly into the interior of the eaves gutter.

[0011] Preferably, the filtering mechanism includes a filter plate, which is embedded in the inside of a through-hole opened on the inner end side wall of the receiving frame. The filter plate and the extrusion plate cooperate with each other to perform secondary squeezing of the moisture inside the fallen leaves, and at the same time, the squeezed moisture can pass through the filter plate smoothly. A transfer frame is fixedly connected to the inner end side wall of the receiving frame and located around the filter plate. The transfer frame is connected to the drain pipe through a connecting pipe. The moisture passing through the filter plate will enter the inside of the drain pipe through the transfer frame and the connecting pipe.

[0012] Preferably, the receiving frame includes a frame body and a base plate, the base plate is fixedly connected to the output rod of the electric push rod installed on the side of the frame body, the extension and retraction of the output rod of the electric push rod can drive the lifting and lowering of the base plate, a sealing gasket is fixedly connected to the base plate, and a corresponding sealing groove is opened on the frame body. The setting of the sealing gasket and the sealing groove can better maintain the seal between the base plate and the frame body.

[0013] A rainwater outlet leaf fall warning system includes a liquid level detector and the above-mentioned cleaning device, wherein the liquid level detector is installed on the inner side of the eaves gutter, the liquid level detector is electrically connected to a control module installed on the lower side of the eaves gutter, and the control module is electrically connected to a motor and an electric push rod. When the liquid level detector detects the liquid level, it sends a signal to the control module, causing the control module to control the movement of the motor.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The arrangement of the cleaning unit, the blocking door, and the first spring allows the cleaning unit to cooperate with the blocking door to squeeze out moisture from the fallen leaves when pushing them out of the gutter. Furthermore, when the cleaning unit moves back into the gutter, the blocking door will not immediately reset, thereby allowing the fallen leaves to enter the receiving frame more easily.

[0016] 2. The second spring, the extrusion plate and the filter mechanism can squeeze out the fallen leaves that have entered the receiving frame for a second time, and the squeezed water will flow into the drain pipe through the filter mechanism and be discharged;

[0017] 3. The lower side wall of the receiving frame is set to be openable and closable. The lower side wall of the receiving frame can be opened regularly to take out the fallen leaves for subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a cross-sectional view of the present invention.

[0020] Figure 3 It is a schematic diagram of the extrusion state of the cleaning part and the blocking door of the present invention.

[0021] Figure 4 It is a schematic diagram of the engaging state of the clamping block and the blocking door of the present invention.

[0022] Figure 5 Schematic diagram of the internal structure of the empty slot of the present invention.

[0023] Figure 6 This is an exploded view of the door and gutter of the present invention.

[0024] Figure 7 This is an exploded view of the base plate and frame of the present invention.

[0025] Figure 8 Schematic diagram of electrical connections of the control module of the present invention.

[0026] Figure 9 This is an exploded view of the fixed block and the slide groove of the present invention.

[0027] In the figure: 1. eaves gutter, 2. cleaning part, 3. door, 4. drain pipe, 5. receiving frame, 501. frame, 502. bottom plate, 503. sealing gasket, 504. sealing groove, 6. extrusion plate, 7. filtering mechanism, 701. filter plate, 702. transfer frame, 703. connecting pipe, 8. connecting rod, 9. first spring, 10. second spring, 11. rubber membrane, 12. screw, 13. through hole, 14. motor, 15. empty slot, 16. slide rod, 17. spring, 18. block, 19. extrusion block, 20. electric push rod, 21. slide groove, 22. fixing block, 23. liquid level detector, 24. control module. DETAILED DESCRIPTION

[0028] The present invention is described below with specific examples, but is not intended to be limiting of the invention.

[0029] In this embodiment, a rainwater outlet fallen leaves automatic cleaning device is provided, such as Figure 1As shown, it includes a cleaning part 2 installed in the eaves gutter 1 and capable of reciprocating movement. The cleaning part 2 is tightly fitted with the inner wall of the eaves gutter 1. The cleaning part 2 can clean out the fallen leaves inside the eaves gutter 1 when it reciprocates inside the eaves gutter 1. Both end side walls of the eaves gutter 1 are equipped with baffles 3 controlled to open and close by the cleaning part 2, and the baffles 3 and the cleaning part 2 squeeze out the moisture in the fallen leaves that fall into the eaves gutter 1 for the first time. When the cleaning part 2 pushes the fallen leaves to move to the end of the eaves gutter 1, the corresponding baffles 3 will be opened, so that the fallen leaves pushed by the cleaning part 2 can fall smoothly from the inside of the eaves gutter 1. When the cleaning part 2 opens the baffles 3, the moisture inside the fallen leaves pushed by the cleaning part 2 will be squeezed out for the first time. Drain pipes 4 are installed at both ends of the ditch 1. A filter is installed at the connection point between the drain pipe 4 and the eaves gutter 1 and inside the eaves gutter 1 to prevent fallen leaves from clogging the drain pipe 4. The water inside the eaves gutter 1 will be discharged directly through the drain pipe 4. The drain pipe 4 is connected to the rainwater outlet outside. The rainwater discharged through the drain pipe 4 will directly flow into the inside of the rainwater outlet. A receiving frame 5 is installed below both ends of the eaves 1. The fallen leaves falling from the inside of the eaves gutter 1 will enter the inside of the receiving frame 5. The inside of the receiving frame 5 is equipped with an extrusion plate 6 that moves synchronously with the baffle 3 and is used for secondary squeezing of the water inside the fallen leaves. When the baffle 3 is opened, the extrusion plate 6 will also move, and the movement direction of the extrusion plate 6 and the corresponding baffle 3 is the same direction. Figure 2 and Figure 4 As shown, the baffle door 3 moves to the left, driving the corresponding squeezing plate 6 to move to the left, thereby leaving corresponding space inside the receiving frame 5, allowing the fallen leaves falling from the inside of the eaves gutter 1 to enter the inside of the receiving frame 5, and then the baffle door 3 moves to the right and closes. At this time, the squeezing plate 6 will also move to the right, thereby squeezing the moisture inside the fallen leaves for a second time, and the inner end of the receiving frame 5 is connected to the drain pipe 4 through the filtering mechanism 7, and the filtering mechanism 7 is installed on the inner end side wall of the receiving frame 5. The end of the receiving frame 5 close to the center of the eaves gutter 1 is the inner end. When the squeezing plate 6 moves to the right, it will cooperate with the filtering mechanism 7 to squeeze out the moisture inside the fallen leaves, and the squeezed moisture will flow into the interior of the drain pipe 4 through the filtering mechanism 7. The lower side wall of the receiving frame 5 is set to be openable and closable, and the lower side wall of the receiving frame 5 is an inclined surface with a low inside and a high outside for discharging the squeezed fallen leaves. The staff can regularly open the lower side wall of the receiving frame 5 and take out the squeezed fallen leaves for subsequent processing. The setting of the inclined surface can make the squeezed fallen leaves better discharged.

[0030] like Figure 3As shown, the outer side of the baffle door 3 is fixedly connected to a connecting rod 8, and the connecting rod 8 is connected to the extrusion plate 6. When the baffle door 3 moves, the extrusion plate 6 will move together through the connecting rod 8, and a first spring 9 is connected between the connecting rod 8 and the inner side wall of the outer end of the receiving frame 5, and the first spring 9 has a tightening force that presses the connecting rod 8 toward the eaves gutter 1. Under the action of the tightening force of the first spring 9, the cleaning part 2 needs to apply a certain force to the baffle door 3 to open the baffle door 3. At this time, the cleaning part 2 will cooperate with the baffle door 3 to extrude the fallen leaves for the first time;

[0031] Both ends of the inner side of the baffle door 3 are fixedly connected with sealing plates, and corresponding slots are provided on the eaves 1, so that the baffle door 3 can not only slide in a straight line along the track of the slot after opening, but also ensure the direct sealing between the two ends of the baffle door 3 and the eaves 1. No sealing plate is provided on the lower side of the baffle door 3, so that fallen leaves can fall smoothly into the interior of the receiving frame 5, and even if rainwater leaks through the lower side of the baffle door 3, it will enter the interior of the drain pipe 4 through the receiving frame 5 and the filtering mechanism 7.

[0032] In order to prevent the fallen leaves inside the receiving frame 5 from hindering the movement of the squeezing plate 6, resulting in the barrier door 3 being unable to close, a second spring 10 is provided. The connecting rod 8 is connected to the squeezing plate 6 by the second spring 10 fixedly connected thereto, and the second spring 10 has an elastic force that presses the squeezing plate 6 toward the inner end of the receiving frame 5. Under the action of the pressing force of the second spring 10, the fallen leaves entering the receiving frame 5 will be squeezed by the squeezing plate 6. When the squeezing plate 6 is affected by the volume of the fallen leaves and cannot return to its original position, the second spring 10 will contract to compensate for the movement of the squeezing plate 6, so that the barrier door 3 can be smoothly closed under the action of the pressing force of the first spring 9. Figure 2 As shown, a rubber membrane 11 is connected between the extrusion plate 6 and the baffle 3. The rubber membrane 11 can produce elastic deformation, so that the leaves falling from the inside of the eaves gutter 1 can smoothly enter between the extrusion plate 6 and the corresponding inner end side wall of the receiving frame 5, so that the moisture inside is smoothly squeezed out by the extrusion plate 6.

[0033] like Figure 2 As shown, a slide groove 21 is provided on the inner side surface of the receiving frame 5, and the slide groove 21 is parallel to the lower side wall of the receiving frame 5. A fixed block 22 adapted to the slide groove 21 is fixedly connected to the extrusion plate 6. The setting of the slide groove 21 and the fixed block 22 can make the extrusion plate 6 always fit with the lower side wall of the receiving frame 5 when sliding inside the receiving frame 5, so that the extrusion plate 6 has a better extrusion effect on the leaves.

[0034] like Figure 1As shown, the cleaning part 2 is threadedly connected to the screw 12, and both ends of the screw 12 extend to the outside of the eaves gutter 1 through the through holes 13 provided on the corresponding stop door 3. The inner side wall of the through hole 13 is a smooth surface, and the stop door 3 is slidably connected to the screw 12 through the through hole 13. The screw 12 will not affect the stop door 3 when rotating, and one end of the screw 12 is driven by the motor 14 installed on the receiving frame 5, and the other end is rotatably connected to the fixed plate installed on the other receiving frame 5. Support frames are respectively installed on the two receiving frames 5, and the motor 14 and the fixed plate are respectively installed on the corresponding support frames. The rotation of the motor shaft of the motor 14 will drive the corresponding screw 12 to rotate, thereby driving the cleaning part 2 to slide inside the eaves gutter 1, and the sliding direction of the cleaning part 2 inside the eaves gutter 1 can be controlled by controlling the rotation direction of the motor 14.

[0035] Furthermore, in order to make the fallen leaves between the cleaning part 2 and the blocking door 3 fall into the receiving frame 5 better, a card block 18 and an extrusion block 19 are provided. Figure 5 As shown, both ends of the screw rod 12 are provided with an empty groove 15, and the interior of the empty groove 15 is symmetrically provided with a slide rod 16, and a spring piece 17 is connected between the two slide rods 16 located in the same empty groove 15. The shape of the spring piece 17 is "U"-shaped, and the spring piece 17 has a tightening force to push the two slide rods 16 in the direction away from each other. The outer end of the slide rod 16 is fixedly connected to a clamping block 18, and the inner end is fixedly connected to an extrusion block 19. The inner side surface of the clamping block 18 is an inclined surface with a low inner side and a high outer side, and the upper side surface of the extrusion block 19 is an inclined surface with a high middle and low ends. When the extrusion plate 6 pushes the corresponding stop door 3 to move in the direction away from the eaves gutter 1, the cleaning part 2 will smoothly pass over the extrusion block 19 to push the stop door 3, and the stop door 3 will smoothly pass over the clamping block 18. At this time, the cleaning part 2 will not pass over the clamping block 18;

[0036] When the cleaning part 2 moves toward the inside of the gutter 1, the blocking block 18 will block the blocking door 3, so that the blocking door 3 overcomes the pressing force of the first spring 9, so that the blocking door 3 and the cleaning part 2 are no longer in contact with each other, and then the fallen leaves between the cleaning part 2 and the blocking door 3 can fall better. When the cleaning part 2 moves back to the inside of the gutter 1 and is squeezed onto the squeezing block 19, the blocking block 18 is also retracted into the inside of the empty slot 15. At this time, the blocking door 3 will smoothly fit with the end of the gutter 1 under the action of the pressing force of the first spring 9, and the end of the gutter 1 will be blocked again.

[0037] like Figure 2As shown, the shape of the cleaning part 2 is "︿", and the inner side of the door 3 is matched with the side of the cleaning part 2. The cleaning part 2 adopts this shape, which can better push the fallen leaves inside the gutter 1. The inclined surface of the door 3 can cooperate with the cleaning part 2 to initially squeeze the water inside the fallen leaves. The two side surfaces of the cleaning part 2 are provided with filter holes. The setting of the filter holes can make the squeezed water flow into the inside of the gutter 1, so as to separate from the fallen leaves.

[0038] As shown in the drawings, Figure 2 The filter mechanism 7 includes a filter plate 701, which is embedded in the inside of the through hole on the inner end side wall of the receiving frame 5. The filter plate 701 cooperates with the squeezing plate 6 to squeeze the water inside the fallen leaves twice, and at the same time, the squeezed water can smoothly pass through the filter plate 701. The inner end side wall of the receiving frame 5 is fixedly connected with a transfer frame 702 around the filter plate 701. The transfer frame 702 is communicated with the drain pipe 4 through a connecting pipe 703. The water passing through the filter plate 701 will enter the inside of the drain pipe 4 through the transfer frame 702 and the connecting pipe 703.

[0039] As shown in the drawings, Figure 7 The receiving frame 5 includes a frame body 501 and a bottom plate 502. The bottom plate 502 is fixedly connected with the output rod of the electric push rod 20 installed on the side of the frame body 501. The extension and retraction of the output rod of the electric push rod 20 can drive the lifting of the bottom plate 502, so as to control whether the fallen leaves inside the receiving frame 5 are discharged. The bottom plate 502 is fixedly connected with a sealing gasket 503. The frame body 501 is provided with a corresponding sealing groove 504. The setting of the sealing gasket 503 and the sealing groove 504 can better keep the sealing between the bottom plate 502 and the frame body 501.

[0040] A rainwater outlet leaf falling warning system includes a liquid level detector 23 and the above-mentioned cleaning device. The liquid level detector 23 is installed on the inner side of the eaves gutter 1. The liquid level detector 23 is installed at a specified height on the inner side of the eaves gutter 1 (for example, 4 cm away from the inner wall of the lower side of the eaves gutter 1). When the liquid level reaches the specified height, it means that the inside of the eaves gutter 1 is blocked by fallen leaves, and the rainwater inside cannot be discharged in time. A clearance port adapted to the liquid level detector 23 is opened on the cleaning part 2. When it is possible, the liquid level detector 23 will not affect the sliding of the cleaning part 2 inside the eaves gutter 1. The liquid level detector 23 is installed on the lower side of the eaves gutter 1. The control module 24 on the surface is electrically connected, and the control module 24 is electrically connected to the motor 14 and the electric push rod 20. When the liquid level detector 23 detects the liquid level, it will send a signal to the control module 24, so that the control module 24 controls the movement of the motor 14. When the staff needs to take out the fallen leaves inside the receiving frame 5, they can send a signal to the control module 24 through an external signal sending device (such as a mobile phone) to control the output rod of the electric push rod 20 to extend. At this time, the fallen leaves inside the receiving frame 5 will be discharged. After the fallen leaves are discharged, the output rod of the electric push rod 20 can be retracted again to close the receiving frame 5.

[0041] The motor 14 , the electric push rod 20 , the liquid level detector 23 and the control module 24 are respectively connected to an external power source via cables.

[0042] The liquid level detector 23 and the control module 24 are both existing technologies and are now widely used, so the present invention will not elaborate on them. For example, the liquid level detector 23 can adopt the EE-SPX613 model, and the control module 24 can adopt the Internet of Things module.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An automatic cleaning device for fallen leaves at a rainwater outlet, characterized in that: The invention comprises a cleaning part (2) installed inside the eaves gutter (1) and capable of reciprocating movement, wherein both end side walls of the eaves gutter (1) are installed with a baffle (3) which is controlled to open and close by the cleaning part (2), and the baffle (3) and the cleaning part (2) perform a primary extrusion of water from fallen leaves falling into the eaves gutter (1), both ends of the eaves gutter (1) are installed with a drainage pipe (4), and both ends of the eaves gutter (1) are installed with a receiving frame (5), and the receiving frame (5) is installed inside with an extrusion plate (6) which moves synchronously with the baffle (3) and is used for secondary extrusion of water from the fallen leaves, and the inner end of the receiving frame (5) is connected to the drainage pipe (4) through a filtering mechanism (7), and the lower side wall of the receiving frame (5) is set to be openable and closable, and the lower side wall of the receiving frame (5) is a slope with a lower inner side and a higher outer side, for discharging the fallen leaves after the water is squeezed out; The outer side surface of the blocking door (3) is fixedly connected to a connecting rod (8), the connecting rod (8) and the extrusion plate (6) are connected to each other, and a first spring (9) is connected between the connecting rod (8) and the inner side wall of the outer end of the receiving frame (5), and the first spring (9) has a pressing force to press the connecting rod (8) toward the eaves gutter (1).

2. The automatic cleaning device for fallen leaves at a rainwater outlet according to claim 1, characterized in that: The connecting rod (8) is connected to the extrusion plate (6) via a second spring (10) fixedly connected thereto, and the second spring (10) has an elastic force for pressing the extrusion plate (6) toward the inner end of the receiving frame (5). A rubber membrane (11) is connected between the extrusion plate (6) and the blocking door (3).

3. The automatic cleaning device for fallen leaves at a rainwater inlet according to claim 1, characterized in that: A slide groove (21) is provided on the inner side surface of the receiving frame (5), and the slide groove (21) is parallel to the lower side wall of the receiving frame (5). A fixed block (22) adapted to the slide groove (21) is fixedly connected to the extrusion plate (6).

4. The automatic cleaning device for fallen leaves at a rainwater inlet according to claim 1, characterized in that: The cleaning portion (2) is threadedly connected to the screw (12), and both ends of the screw (12) extend to the outside of the gutter (1) through the through holes (13) provided on the corresponding blocking door (3). One end of the screw (12) is driven by a motor (14) installed on the receiving frame (5), and the other end is rotatably connected to a fixed plate installed on another receiving frame (5).

5. The automatic cleaning device for fallen leaves at a rainwater inlet according to claim 4, characterized in that: Both ends of the screw rod (12) are provided with a slot (15), and the inside of the slot (15) is symmetrically provided with a slide rod (16), and a spring piece (17) is connected between the two slide rods (16) located in the same slot (15). The outer end of the slide rod (16) is fixedly connected to a clamping block (18), and the inner end is fixedly connected to an extrusion block (19). The inner side surface of the clamping block (18) is an inclined surface with a lower inner side and a higher outer side, and the upper side surface of the extrusion block (19) is an inclined surface with a higher middle side and lower ends.

6. The automatic cleaning device for fallen leaves at a rainwater inlet according to claim 4, characterized in that: The cleaning portion (2) is in a "︿" shape, and the inner side surface of the blocking door (3) is adapted to the side surface of the cleaning portion (2). Filter holes are provided on both side surfaces of the cleaning portion (2).

7. The automatic cleaning device for fallen leaves at a rainwater inlet according to claim 1, characterized in that: The filtering mechanism (7) comprises a filter plate (701), the filter plate (701) being embedded in a through-hole provided on the inner side wall of the receiving frame (5), a transfer frame (702) being fixedly connected to the inner side wall of the receiving frame (5) and located around the filter plate (701), and the transfer frame (702) being communicated with the drain pipe (4) via a connecting pipe (703).

8. The automatic cleaning device for fallen leaves at a rainwater inlet according to claim 1, characterized in that: The receiving frame (5) comprises a frame body (501) and a bottom plate (502), wherein the bottom plate (502) is fixedly connected to an output rod of an electric push rod (20) mounted on a side surface of the frame body (501), a sealing gasket (503) is fixedly connected to the bottom plate (502), and a corresponding sealing groove (504) is provided on the frame body (501).

9. A rainwater outlet leaf fall warning system, comprising a liquid level detector (23), characterized in that: It also includes the cleaning device according to any one of claims 1 to 8, wherein the liquid level detector (23) is installed on the inner side of the gutter (1), the liquid level detector (23) is electrically connected to a control module (24) installed on the lower side of the gutter (1), and the control module (24) is electrically connected to the motor (14) and the electric push rod (20).

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