Rainwater drainage device and drainage method

Abstract

The present application relates to rainwater drainage equipment technical field, disclose a kind of rainwater drainage device and drainage method, including water collecting hopper, water collecting hopper is equipped with drainage plate, and drainage plate is equipped with drainage port for filtering sundries;Water collecting hopper is equipped with leaf cutting assembly located above drainage plate, leaf cutting assembly is used to cut sundries accumulated on drainage plate to realize the water that accumulates is introduced into the water collecting hopper below drainage plate;Water collecting hopper is equipped with anti-vortex assembly located below drainage plate, anti-vortex assembly is used to prevent vortex when water that accumulates is discharged from water collecting hopper, and leaf cutting assembly can drive anti-vortex assembly to stir after cutting sundries when cutting sundries.The setting of leaf cutting assembly makes leaf cutting assembly cut fallen leaves and other sundries accumulated on drainage plate, so that the flow channel is formed in drainage port with the accumulated sundries, so that the water that accumulates on drainage plate is discharged into the water collecting hopper below drainage plate, thereby solving the problem that existing drainage hopper is blocked by fallen leaves, causing poor drainage.

Description

Technical Field

[0001] This invention relates to the field of rainwater drainage equipment technology, and more specifically, to a rainwater drainage device and drainage method. Background Technology

[0002] With urbanization, the capacity of natural drainage systems has been continuously developing, making the construction of drainage systems particularly important in the construction of modern cities. Most existing drainage troughs have filter plates at their interface with the ground. When fallen leaves and other debris are washed onto the filter plates by rainwater, they are filtered, leaving the debris trapped on the plates. However, over time, the accumulation of fallen leaves and other debris can clog the filter plates, leading to poor drainage. In severe cases, this can cause flooding, resulting in inconvenience and economic losses.

[0003] For example, a siphon rainwater hopper for building drainage disclosed in patent number CN114809467B has a detachable screen plate 3 placed on the top of the hopper pool 1. The screen plate 3 can filter the water entering the hopper pool 1, preventing debris from entering the hopper pool 1 and causing blockage, thus ensuring smooth drainage. However, in actual use, when fallen leaves and other debris are washed onto the screen plate with rainwater, it can cause the screen plate to become blocked, making the rainwater hopper's drainage unsmooth. Therefore, it needs to be improved. Summary of the Invention

[0004] To address the technical problems mentioned in the background section, the present invention provides a rainwater drainage device and drainage method.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A rainwater drainage device includes an upward-opening water collection hopper, a drainage plate inside the water collection hopper, and a drainage outlet on the drainage plate for filtering debris; a blade assembly located above the drainage plate inside the water collection hopper, the blade assembly for cutting debris accumulated on the drainage plate to guide the accumulated water into the water collection hopper below the drainage plate; and an anti-vortex assembly located below the drainage plate inside the water collection hopper, the anti-vortex assembly for preventing vortices from being generated when the accumulated water is discharged from the water collection hopper, and the anti-vortex assembly can drive the blade assembly to turn over the cut debris when cutting the debris.

[0007] Furthermore, the blade-cutting assembly includes a liftable connecting plate, and the lower plate surface of the connecting plate is provided with multiple cutting plates with V-shaped lower ends. The cutting plates are provided with downward-opening guide cavities, and the side walls of the cutting plates are provided with multiple water inlet grooves that connect to the corresponding guide cavities.

[0008] Furthermore, the anti-vortex assembly includes a support plate disposed in the water collection hopper, the support plate is provided with a water outlet groove through which water flows, and the upper side of the support plate is provided with multiple anti-vortex plates arranged circumferentially along the support plate; the anti-vortex plates are liftable, the drainage plate is provided with through holes corresponding to the anti-vortex plates for the anti-vortex plates to pass through, and the support plate is provided with a drive assembly for driving the anti-vortex plates to lift.

[0009] Furthermore, the drive assembly includes a mounting base on the support plate. The mounting base includes a cylindrical portion and a housing circumferentially located on the cylindrical portion. The cylindrical portion has an airbag mounting cavity, and the housing has a sliding cavity communicating with the airbag mounting cavity and used to mount the corresponding anti-vortex plate. The airbag mounting cavity has a retractable airbag, and the side wall of the airbag has a telescopic part located in the corresponding sliding cavity. The upper side of the cylindrical portion has a mounting cylinder, and the mounting cylinder has a pressure rod with one end extending into the airbag mounting cavity. The upper end of the pressure rod has a piston that can be raised and lowered and whose upper end extends out of the mounting cylinder. The lower end of the pressure rod has a pressure plate, and a spring that drives the piston to move upward is sleeved on the pressure rod. The downward movement of the cutting plate is used to push the piston downward to realize the pressure plate compressing the airbag.

[0010] Furthermore, a drain tailpipe is provided at the lower end of the water collection hopper, and a filter plate is provided at the opening of the drain tailpipe. The filter plate is connected to the support plate by a connecting rod.

[0011] Furthermore, a bracket is provided at the opening at the upper end of the water collection hopper, and a cylinder for driving the connecting plate to rise and fall is provided on the bracket.

[0012] Furthermore, the two ends of the outer shell extend upward to form limiting plate portions that limit the anti-vortex plate.

[0013] Furthermore, the drainage plate and the support plate are threadedly connected to the water collection hopper.

[0014] This embodiment also provides a method for using a rainwater drainage device, which employs the aforementioned rainwater drainage device and includes the following steps:

[0015] Step 1: Rainwater enters the water collection hopper. When the drainage board is blocked by the accumulated water, the water level sensor detects that the water level exceeds the preset value. The controller controls the cylinder to drive the connecting plate to move the cutting plate up and down to cut the debris on the drainage board, thus forming a flow channel so that the accumulated water can be discharged into the bottom of the water collection hopper through the drainage board.

[0016] Step 2: The reciprocating lifting of the cutting plate is used to squeeze the piston, causing it to extend and retract within the mounting cylinder. This drives the pressure rod to press the pressure plate, squeezing the air bladder to make it dent or expand. It also pushes the telescopic part to expand or contract, driving the anti-vortex plate to rise and fall, turning over the debris on the drainage plate, and allowing the accumulated water on the drainage plate to drain into the lower part of the water collection hopper.

[0017] Step 3: The water collected below the water collection hopper is filtered by the filter plate and then enters the drainage pipe through the drain tailpipe.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The present invention, by setting the leaf-cutting component, enables the leaf-cutting component to cut the fallen leaves and other debris accumulated on the drainage plate, so that the accumulated debris forms a flow channel at the drainage outlet, so that the water on the drainage plate can be discharged into the water collection hopper below the drainage plate, thereby solving the problem of poor drainage caused by fallen leaves clogging the existing drainage hopper.

[0020] 2. In this invention, by setting up an anti-vortex component, rainwater is restricted by the anti-vortex component when it flows through it, so that the rainwater cannot form vortices, thereby avoiding the situation where a large amount of air is brought into the drainage pipe when the rainwater is drained.

[0021] 3. In this invention, the anti-vortex plate is driven to rise and fall by the drive component to turn over the fallen leaves and other debris piled on the drainage plate, so as to improve the cutting effect of the leaf cutting component and facilitate the formation of flow channels to promote drainage effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the rainwater drainage device in this invention.

[0023] Figure 2 This is a partial structural schematic diagram of the rainwater drainage device in this invention.

[0024] Figure 3 This is a cross-sectional schematic diagram of the rainwater drainage device in this invention.

[0025] Figure 4 This is a schematic diagram of the anti-vortex component in this invention.

[0026] Figure 5 This is a half-sectional schematic diagram of the driving component in this invention.

[0027] Figure 6 This is a schematic diagram of the driving component in this invention.

[0028] Figure 7 This is a schematic diagram of the support structure in this invention.

[0029] Figure 8 This is a schematic diagram of the drainage board in this invention.

[0030] Figure 9 This is a half-sectional schematic diagram of the cutting plate in this invention.

[0031] Figure 10 This is a schematic diagram of the structure of the tray and filter plate in this invention.

[0032] The meanings of the labels in the diagram are as follows:

[0033] 100. Water collecting hopper; 101. Mounting ring plate; 111. Drain tailpipe; 120. Bracket; 130. Cylinder; 140. Connecting plate; 200. Drain plate; 210. Cutting plate; 220. Support plate; 230. Anti-vortex plate; 240. Mounting base; 250. Filter plate; 260. Connecting rod; 300. Airbag; 310. Pressure rod; 320. Piston; 330. Spring; 400. Cutout; 410. Mounting cylinder; 500. Pressure plate; 501. Telescopic part; 510. Cylindrical part; 520. Outer shell; 800. Drain outlet; 810. Through hole; 900. Guide cavity; 910. Inlet tank; 1000. Outlet tank. Detailed Implementation

[0034] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0035] The following is in conjunction with the appendix Figures 1-10 This embodiment will be described in further detail.

[0036] Please see Figures 1-3 This embodiment of a rainwater drainage device includes an upward-opening water collection hopper 100, a drainage plate 200 inside the water collection hopper 100, and a drainage outlet 800 for filtering debris on the drainage plate 200. A blade-cutting assembly located above the drainage plate 200 is located inside the water collection hopper 100. The blade-cutting assembly is used to cut debris accumulated on the drainage plate 200 to guide accumulated water into the water collection hopper 100 below the drainage plate 200. An anti-vortex assembly located below the drainage plate 200 is also located inside the water collection hopper 100. The anti-vortex assembly is used to prevent vortices from forming when accumulated water is discharged from the water collection hopper 100. When the blade-cutting assembly cuts debris, it can drive the anti-vortex assembly to agitate the cut debris.

[0037] In actual use, the lower end of the water collection hopper 100 is provided with a drain tail pipe 111. During installation, the water collection hopper 100 is installed in the ground, and the drain tail pipe 111 is connected to the existing drainage pipe. At the same time, the upper end of the water collection hopper 100 is flush with the ground. During rainfall, rainwater mixed with fallen leaves and other debris enters the water collection hopper 100 through the opening, is filtered by the drain outlet 800 on the drainage plate 200, and is discharged into the drainage pipe through the drain tail pipe 111.

[0038] In this embodiment, during long-term use, fallen leaves and other debris accumulate on the drainage plate 200, clogging the drain outlet 800 and reducing its drainage effect. At this time, the leaf-cutting assembly cuts the fallen leaves and other debris accumulated on the drainage plate 200, so that the accumulated debris forms a flow channel in the drain outlet 800, so that the water on the drainage plate 200 can be discharged into the water collection hopper 100 below the drainage plate 200.

[0039] Among them, by setting up the anti-vortex component, when rainwater flows through the anti-vortex component, it is restricted by the anti-vortex component, so that the rainwater force is dispersed and cannot form a vortex. This makes it difficult to bring air into the area below the water collection hopper 100, thus ensuring that no large noise is generated during drainage and facilitating the use of siphon drainage method.

[0040] When the blade-cutting assembly cuts debris, it can drive the anti-vortex assembly to turn over the cut debris, so that the debris on the drainage plate 200 can be turned over better, avoiding its accumulation, thereby facilitating the formation of a flow channel at the drainage outlet 800 to promote the drainage effect.

[0041] In practical use, in order to facilitate the installation of the water collection hopper 100, the upper end of the water collection hopper 100 is provided with an installation ring plate 101 along its outer circumference. In actual installation, the installation ring plate 101 is installed on the ground with expansion bolts, so that the rainwater drainage device is installed, allowing rainwater to enter the water collection hopper 100 more smoothly, instead of flowing down the outer wall of the water collection hopper 100 into the ground.

[0042] The drainage plate 200 has a first threaded portion on its outer wall, and the water collection hopper 100 has a first threaded groove on its inner wall to match the first threaded portion. The drainage plate 200 can be detachably installed in the water collection hopper 100 by the first threaded portion and the first threaded groove.

[0043] like Figures 2-8 As shown, in this embodiment, the blade-cutting assembly includes a liftable connecting plate 140. The lower plate surface of the connecting plate 140 is provided with multiple cutting plates 210 with V-shaped lower ends. The cutting plates 210 are provided with downward-opening guide cavities 900. The side walls of the cutting plates 210 are provided with multiple water inlet grooves 910 that connect to the corresponding guide cavities 900.

[0044] In actual use, a bracket 120 is provided at the upper opening of the water collection hopper 100. A cylinder 130 is installed on the bracket 120 to drive the connecting plate 140 to rise and fall. The cylinder 130 drives the connecting plate 140 to rise and fall, thereby driving the cutting plate 210 to cut the debris accumulated on the drainage plate 200. Since the lower end of the cutting plate 210 is V-shaped, when it descends to cut the debris, the debris breaks at the drain outlet 800, forming a flow channel for rainwater to flow. At the same time, through the setting of the guide cavity 900 and the water inlet trough 910, the water accumulated on the drainage plate 200 can enter the guide cavity 900 through the water inlet trough 910, and flow into the water collection hopper 100 below the drainage plate 200 from the drain outlet 800 where the debris breaks. This makes the drainage effect of the flow channel better and avoids the situation where the drain outlet 800 is blocked by fallen leaves, resulting in poor drainage and accidents such as water accumulation and flooding of the ground.

[0045] The water collection hopper 100 is equipped with a control system, which includes a water level sensor (not shown in the figure) located above the drainage plate 200 and a controller (not shown in the figure) electrically connected to the water level sensor. When the water level sensor detects that the water level is higher than a preset value, the controller controls the cylinder 130 to drive the connecting plate 140 to rise and fall to cut the debris, so as to form a flow channel to facilitate the drainage of the water. When the water level sensor detects that the water level is lower than the preset value, the controller controls the cylinder 130 to stop working.

[0046] The water inlet trough 910 is inclined, which can better guide the accumulated water into the guide cavity 900. The lower opening of the guide cavity 900 is located on the lower V-shaped inclined surface of the cutting plate 210, so as to ensure the cutting effect of the cutting plate 210 on the debris, and at the same time, facilitate the formation of the flow channel and promote drainage.

[0047] Combination Figures 2-5 As shown, in this embodiment, the anti-vortex assembly includes a support plate 220 disposed in the water collection hopper 100. The support plate 220 is provided with a water outlet trough 1000 through which water flows. The upper side of the support plate 220 is provided with multiple anti-vortex plates 230 arranged circumferentially along the support plate 220. The anti-vortex plates 230 are liftable. The drainage plate 200 is provided with through holes 810 corresponding to the anti-vortex plates 230 for the anti-vortex plates 230 to pass through. The support plate 220 is provided with a drive assembly for driving the anti-vortex plates 230 to lift.

[0048] In actual use, rainwater flowing through the drainage plate 200 enters the water collection hopper 100 below the support plate 220 through the water outlet 1000 and is discharged through the drainage tail pipe 111. The anti-vortex plate 230 disperses the force on the water flow when it flows through the support plate 220, preventing the generation of vortices and making it difficult to carry air into the area below the water collection hopper 100.

[0049] The drive assembly and the liftable anti-vortex plate 230 allow the upper end of the anti-vortex plate 230 to extend out of the through hole 810 under the action of the drive assembly, thereby lifting up fallen leaves and other debris piled on the drainage plate 200. This causes the fallen leaves and other debris to be turned over, preventing them from accumulating in the same position. This allows the cutting plate 210 to cut the debris at different positions, resulting in better cutting of the debris, a better flow channel effect, and a better flow guiding effect.

[0050] Among them, the upper end of the anti-vortex plate 230 is provided with a cut 400 corresponding to the cutting plate 210. The cut 400 ensures that the movements of the cutting plate 210 and the anti-vortex plate 230 do not interfere with each other, thereby making the operation of the device more stable and reliable.

[0051] The outer wall of the tray 220 is provided with a second threaded portion, and the inner wall of the water collecting hopper 100 is provided with a second threaded groove to match the second threaded portion. Through the provision of the second threaded portion and the second threaded groove, the tray 220 can be detachably installed in the water collecting hopper 100.

[0052] Combination Figures 3-6 As shown, in this embodiment, the drive assembly includes a mounting base 240 disposed on the support plate 220. The mounting base 240 includes a cylindrical portion 510 and a housing 520 disposed circumferentially around the cylindrical portion 510. An airbag mounting cavity is provided inside the cylindrical portion 510. A sliding cavity communicating with the airbag mounting cavity and used to install the corresponding anti-vortex plate 230 is provided inside the housing 520. A retractable airbag 300 is disposed inside the airbag mounting cavity. A telescopic part located in the corresponding sliding cavity is provided on the side wall of the airbag 300. 501, The upper side of the cylindrical part 510 is provided with an installation cylinder 410. Inside the installation cylinder 410, there is a pressure rod 310 with one end extending into the airbag installation cavity. The upper end of the pressure rod 310 is provided with a piston 320 that can be raised and lowered and whose upper end extends out of the installation cylinder 410. The lower end of the pressure rod 310 is provided with a pressure plate 500. A spring 330 is sleeved on the pressure rod 310 to drive the piston 320 to move upward. The cutting plate 210 moves downward to push the piston 320 to move downward so that the pressure plate 500 compresses the airbag 300.

[0053] In actual use, the lower end of the anti-vortex plate 230 is movably disposed in the corresponding sliding cavity to realize its lifting and lowering arrangement on the outer shell 520. It is located above the telescopic part 501 of the airbag 300. In its natural state, the anti-vortex plate 230 moves downward under the action of gravity, squeezing the telescopic part 501 to contract it, so that gas moves into the airbag 300.

[0054] With the structure in this embodiment, the corresponding cutting plate 210 moves down to squeeze the piston 320, causing it to move down within the mounting cylinder 410. This, in turn, drives the pressure rod 310 to move down, driving the pressure plate 500 to squeeze the airbag 300, causing it to cave in. This squeezes the gas into the corresponding telescopic part 501, causing the telescopic part 501 to expand and push the anti-vortex plate 230 upward, so that its upper end extends out to flip the debris. When the cutting plate 210 moves up, it releases the pressure on the piston 320, causing the piston 320 to move up under the action of the spring 330. This drives the pressure rod 310 to drive the pressure plate 500 upward. In actual use, the pressure plate 500 is fixedly connected to the upper side of the airbag 300, and the lower side of the airbag 300 is fixedly connected to the bottom wall of the airbag mounting cavity. This allows the anti-vortex plate 230 to be lowered and reset within the sliding cavity under the action of gravity.

[0055] Among them, the size of the pressure plate 500 is larger than the diameter of the mounting cylinder 410, which can limit the upward movement of the pressure rod 310 and prevent the piston 320 from completely disengaging from the mounting cylinder 410.

[0056] In order to achieve smooth lifting and lowering of the anti-vortex plate 230 in the corresponding sliding cavity, the two ends of the outer shell 520 extend upward to form a limiting plate portion 241 to limit the anti-vortex plate 230. The limiting plate portion 241 is provided at the two ends of the sliding cavity opening, and it is recessed inward to form a limiting groove covering the corresponding side wall of the anti-vortex plate 230. Thus, the lifting and lowering of the anti-vortex plate 230 is better supported and guided.

[0057] like Figure 10 As shown, in this embodiment, a drain tail pipe 111 is provided at the lower end of the water collection hopper 100, and a filter plate 250 is provided at the opening of the drain tail pipe 111. The filter plate 250 is connected to the support plate 220 through a connecting rod 260.

[0058] In actual use, the filter plate 250 prevents debris from entering the drain tailpipe 111 from entering the bottom of the water collection hopper 100, thus ensuring that the discharged rainwater does not contain impurities.

[0059] The filter plate 250 is connected to the support plate 220 by the connecting rod 260, so that when it is necessary to clean the debris in the water collection hopper 100, the filter plate 250 can be disassembled at the same time as the support plate 220, making the cleaning of the device more convenient and labor-saving.

[0060] This embodiment also provides a method for using a rainwater drainage device, which specifically includes the following steps:

[0061] Step 1: Rainwater enters the water collection hopper 100. When the drainage plate 200 is blocked by the accumulated water, the water level sensor detects that the water level exceeds the preset value. The controller controls the cylinder 130 to drive the connecting plate 140 to move the cutting plate 210 back and forth to cut the debris on the drainage plate 200, thus forming a flow channel to facilitate the drainage of water through the drainage plate 200 into the bottom of the water collection hopper 100.

[0062] Step 2: The cutting plate 210 reciprocates to squeeze the piston 320, causing it to extend and retract within the mounting cylinder 410. This drives the pressure rod 310 to drive the pressure plate 500 to squeeze the airbag 300, causing it to dent or expand. This pushes the telescopic part 501 to expand or contract, driving the anti-vortex plate 230 to rise and fall. This flips over the debris on the drainage plate 200, allowing the accumulated water on the drainage plate 200 to drain into the lower part of the water collection hopper 100.

[0063] Step 3: The water accumulated below the water collection hopper 100 is filtered by the filter plate 250 and then enters the drainage pipe through the drain tailpipe 111.

Claims

1. A rainwater drainage device, characterized in that: The system includes an upward-opening water collection hopper (100), a drainage plate (200) inside the water collection hopper (100), and a drainage outlet (800) on the drainage plate (200) for filtering debris; a blade-cutting assembly located above the drainage plate (200) is located inside the water collection hopper (100), which cuts debris accumulated on the drainage plate (200) to guide the accumulated water into the water collection hopper (100) below the drainage plate (200); an anti-vortex assembly located below the drainage plate (200) is located inside the water collection hopper (100), which prevents vortices from forming when the accumulated water is discharged from the water collection hopper (100), and the blade-cutting assembly includes a liftable connecting... The connecting plate (140) has multiple V-shaped cutting plates (210) on its lower surface; the anti-vortex assembly includes a support plate (220) located inside the water collection hopper (100), a water outlet groove (1000) for water flow through the support plate (220), and multiple anti-vortex plates (230) arranged circumferentially along the upper side of the support plate (220); the anti-vortex plates (230) are liftable, and the drainage plate has through holes (810) corresponding to the anti-vortex plates (230) for the anti-vortex plates (230) to pass through; the support plate (220) has a drive mechanism for driving the anti-vortex plates (230) to lift. The drive assembly includes a mounting base (240) on a support plate (220). The mounting base (240) includes a cylindrical portion (510) and a housing (520) circumferentially disposed on the cylindrical portion (510). An airbag mounting cavity is provided inside the cylindrical portion (510). A sliding cavity communicating with the airbag mounting cavity and used for mounting a corresponding anti-vortex plate (230) is provided inside the housing (520). A retractable airbag (300) is provided inside the airbag mounting cavity. A telescopic part (501) located in the corresponding sliding cavity is provided on the side wall of the airbag (300). A mounting cylinder (410) is provided on the upper side of the cylindrical portion (510). A pressure rod (310) is provided with one end extending into the airbag mounting cavity. The upper end of the pressure rod (310) is provided with a piston (320) that can be raised and lowered and whose upper end extends out of the mounting cylinder (410). The lower end of the pressure rod (310) is provided with a pressure plate (500). A spring (330) is sleeved on the pressure rod (310) to drive the piston (320) to move upward. The cutting plate (210) moves downward to push the piston (320) to move downward so that the pressure plate (500) compresses the airbag (300). A bracket (120) is provided at the opening at the upper end of the water collection bucket (100). A cylinder (130) is provided on the bracket (120) to drive the connecting plate (140) to move up and down.

2. The rainwater drainage device according to claim 1, characterized in that: The cutting plate (210) has downward-opening guide cavities (900) inside, and the side walls of the cutting plate (210) are provided with multiple water inlet grooves (910) that connect to the corresponding guide cavities (900).

3. A rainwater drainage device according to claim 2, characterized in that: The lower end of the water collection hopper (100) is provided with a drain tail pipe (111), and a filter plate (250) is provided at the opening of the drain tail pipe (111). The filter plate (250) is connected to the support plate (220) through a connecting rod (260).

4. A rainwater drainage device according to claim 3, characterized in that: The outer shell (520) extends upward at both ends to form a limiting plate portion (241) that limits the anti-vortex plate (230).

5. A rainwater drainage device according to claim 4, characterized in that: The drainage plate (200) and the support plate (220) are threadedly connected to the water collection hopper (100).

6. A rainwater drainage method, characterized in that: It employs a rainwater drainage device as described in claim 3, which includes the following steps: Step 1: Rainwater enters the water collection hopper (100). When the drainage plate (200) is blocked by the accumulated water, the water level sensor detects that the water level exceeds the preset value. The controller controls the cylinder (130) to drive the connecting plate (140) to drive the cutting plate (210) to move up and down repeatedly to cut the debris on the drainage plate (200) and form a flow channel so that the accumulated water can be discharged into the bottom of the water collection hopper (100) through the drainage plate (200). Step 2: The cutting plate (210) reciprocates to squeeze the piston (320) so that it extends and retracts inside the mounting cylinder (410), driving the pressure rod (310) to drive the pressure plate (500) to squeeze the airbag (300) so that it is concave or inflated, pushing the telescopic part (501) to expand or contract, driving the anti-vortex plate (230) to rise and fall, turning over the debris on the drainage plate (200), so that the water accumulated on the drainage plate (200) is discharged into the lower part of the water collection hopper (100); Step 3: The water collected below the water collection hopper (100) is filtered by the filter plate (250) and then enters the drainage pipe through the drain tail pipe (111).

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