A quick-installation water vortex speed-up rain grate and method

Abstract

This invention discloses a quick-installation water vortex-accelerated rainwater grate, comprising a main filtration device, a water vortex accelerator, and a main connecting device. The main filtration device filters debris, firstly filtering twigs, leaves, and larger particles such as gravel, then further filtering smaller particles before the water enters the water vortex accelerator, and finally discharging the rainwater. The water vortex accelerator mainly receives the rainwater filtered by the main filtration device, creating a vortex to accelerate it. The main connecting device connects and fixes the main filtration device and the water vortex accelerator, facilitating quick assembly and disassembly. This invention features modular production, rapid assembly and disassembly, and convenient cleaning and maintenance.

Description

Technical Field

[0001] This invention relates to the field of drainage grate technology, and particularly to a quick-installation water vortex speed-up rain grate and method. Background Technology

[0002] Some paved roads, due to poor drainage, are prone to surface runoff after rain, which can even lead to large-scale water accumulation in heavy rainfall. In such cases, storm drains are needed to quickly divert rainwater. However, due to the presence of debris such as branches, leaves, and gravel on the ground, and the slow flow of rainwater, the following drawbacks can easily occur:

[0003] 1. Traditional rain drain grates are prone to letting debris leak into the sewer, causing blockages that are difficult to clean.

[0004] 2. Existing rainwater grates have a slow drainage speed and cannot quickly form water eddies, which may lead to large-area water accumulation during heavy rainfall. For example, Liu Zhiqiang's (China, 2018) "A Side-drainage Rainwater Grating" (application number: 201811448972.1) and Cao Lintao's (China, 2015) "A Rainwater Grating" (application number: 201511011331.6) do not consider the problem of rapid rainwater drainage, which may lead to large-area water accumulation.

[0005] 3. Existing storm drain grates have relatively small pores for rainwater infiltration. Although this can prevent debris from entering the sewer to the greatest extent, it also makes the storm drain grates more prone to clogging. For example, in Lou Feng's (China, 2012) "Turbine Storm Drain Grating" (application number: 201210169965.4), the rainwater infiltration pores are small, making it easy to clog.

[0006] 4. Existing rainwater grates are difficult to clean and are not conducive to quick disassembly and maintenance. For example, although Chen Gulong (China, 2020)'s "An Automatically Cleanable Grate" (application number: 202010653534.X) can clean automatically, the cleaning components are relatively complex, making actual operation difficult. Summary of the Invention

[0007] To overcome the shortcomings of the prior art, the present invention aims to provide a quick-installation water vortex speed-up rainwater grate and method, which has the characteristics of convenient cleaning and disassembly, fast rainwater diversion rate, good anti-clogging effect, low maintenance cost and wide applicability.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A quick-installation water vortex accelerator rain grate includes a main filtration device A, a water vortex accelerator B, and a main connection device C;

[0010] The main filter device A is used to filter impurities. The main filter device A includes a primary screening annular filter plate 1 and an annular perforated metal mesh plate 2. The primary screening annular filter plate 1 is used to initially filter branches, leaves and larger particles of gravel and debris. The annular perforated metal mesh plate 2 further filters small particles of impurities. Then, the water enters the water vortex accelerator B and finally discharges the rainwater.

[0011] The water vortex accelerator B is used to receive rainwater filtered by the main filter device A, and to make the rainwater form a vortex to accelerate it.

[0012] The main connecting device C is used to connect and fix the main filter device A and the water vortex accelerator B, facilitating quick assembly and disassembly.

[0013] The primary screening annular filter plate 1 is located at the top of the main filter device A; the annular perforated metal mesh plate 2 is located at the bottom of the primary screening annular filter plate 1, and all components can be flexibly disassembled and assembled.

[0014] The primary screening annular filter plate 1 includes annular steel bars 16 and radial steel sheets 17. The annular steel bars 16 are spaced 20mm apart and arranged in a concentric circle. Eight radial steel sheets 17 are welded perpendicularly to the annular steel bars 16 at equal intervals and fixed to each other.

[0015] The annular perforated metal mesh plate 2 has an inner ring radius of 200mm and an outer ring radius of 260mm, forming an internal hollow space between the inner and outer rings. The surface of the annular perforated metal mesh plate 2 is provided with several openings, each with a diameter of 4mm.

[0016] The water vortex accelerator B includes an arc-shaped vortex tube 4, an elliptical filter plate 5, a four-hole fixed iron plate 6, a bowl-shaped stainless steel guide wall 7, an arc-shaped metal guide strip 8, a vortex accelerator fixing frame 9, a vortex accelerator 10, and a vortex accelerator metal support rod 11.

[0017] The elliptical filter plate 5 is located at the water inlet at the top of the arc-shaped vortex tube 4. There are eight arc-shaped vortex tubes 4. Each arc-shaped vortex tube 4 is fixed at both ends by a four-hole fixing iron plate 6 between the upper octagonal main body fixing device 13 and the lower circular multi-hole fixing device 14. The elliptical filter plate 5 is placed on the octagonal main body fixing device 13. The octagonal main body fixing device 13 and the lower circular multi-hole fixing device 14 form a bowl-shaped hollow structure through the arc-shaped vortex tube 4 connected in the middle. The bowl-shaped stainless steel guide wall 7 has a smooth surface and is located below the annular perforated metal mesh plate 2. The arc-shaped metal guide strips 8 are welded to the surface of the bowl-shaped stainless steel guide wall 7 at equal intervals. The vortex acceleration fixing frame 9 overlaps the hollow part inside the annular perforated metal mesh plate 2. The vortex accelerator 10 overlaps and is fixed inside the vortex acceleration fixing frame 9. The vortex accelerator metal support rod 11 is fixed and supported at the bottom of the vortex acceleration fixing frame 9.

[0018] The arc-shaped vortex tube 4 has an inner diameter of 16mm and an outer diameter of 18mm. It is generally arc-shaped and easily forms water vortices. The elliptical filter plate 5 has an opening diameter of 4mm and an opening spacing of 2mm. The arc-shaped metal guide strip 8 is generally a smooth arc-shaped component that fits the bowl-shaped stainless steel guide wall 7. Several arc-shaped metal guide strips 8 are arranged in a circular shape. The water flow that converges here forms a water vortex and accelerates. The metal support rod 11 of the vortex accelerator is generally cylindrical.

[0019] The four-hole fixing plate 6 includes fixing screws 18 and square steel plates 19; the fixing screws 18 are round with an internal hexagonal head, used to fix the arc-shaped vortex tube 4.

[0020] The eddy accelerator mounting frame 9 includes an annular fixed metal plate 20, an annular overlapping steel sheet 21, a connecting rod 22, and a circular metal plate 23; wherein the annular fixed metal plate 20 is fixedly connected by the connecting rod 22, the bottom of which is welded with a circular metal plate 23, and the outer periphery is welded with an annular overlapping steel sheet 21 for overlapping and fixing the annular perforated metal mesh plate 2. The annular fixed metal plate 20 is concentrically overlapping and located below the eddy accelerator 10, and the circular metal plate 23 is located at the bottom of the annular fixed metal plate 20.

[0021] The vortex accelerator 10 includes several centripetally spirally connected water-absorbing chambers 24 and square filter screens 25, forming a five-layer annular structure with the radius decreasing layer by layer, forming a funnel shape. Water flows converge here to form a water vortex. Each water-absorbing chamber 24 and square filter screen 25 are assembled one-to-one, so that the water flowing into the water-absorbing chamber 24 must be filtered by the square filter screen 25. The vortex accelerator 10 is attached to the vortex accelerator fixing frame 9 to accelerate the formation of the water vortex. The water-absorbing chamber 24 is generally arc-shaped and hollow inside.

[0022] The main connecting device C includes a ground overlapping plate 12, an octagonal main body fixer 13, a circular perforated fixer 14, and a water flow buffer plate 15. The ground overlapping plate 12 is an arc-edged triangle, with eight pieces in total, and is fixed above the octagonal main body fixer 13. The octagonal main body fixer 13 is octagonal in shape, and its edge fits the arc edge of the ground overlapping plate 12. It is located outside the primary screening annular filter plate 1 and the annular perforated metal mesh plate 2, and is used to fix the primary screening annular filter plate 1, the annular perforated metal mesh plate 2, and the arc-shaped vortex tube 4. The circular perforated fixer 14 is located at the bottom and is used to connect the lower end of the bowl-shaped stainless steel guide wall 7 and fix the bottom of the arc-shaped vortex tube 4. The water flow buffer plate 15 is welded to the circular perforated fixer 14 and supports the metal support rod 11 of the vortex accelerator.

[0023] A method for using a quick-installation water vortex speed-up rain grate includes the following steps;

[0024] A portion of the rainwater passes through the primary screening annular filter plate 1, where most of the debris is intercepted. The rainwater then enters the annular perforated metal mesh plate 2 and finally enters the water vortex accelerator B. Another portion of the rainwater (with the intercepted large-volume debris) passes directly through the primary screening annular filter plate 1 for preliminary filtration before entering the water vortex accelerator B. The primary screening annular filter plate 1 is located at the top of the device. When the device needs to be cleaned, the primary screening annular filter plate 1 and the annular perforated metal mesh plate 2 can be quickly disassembled in sequence to remove the filtered debris.

[0025] The acceleration methods of the water vortex accelerator B include three types;

[0026] (1) Rainwater passes through the arc-shaped vortex tube 4 and the elliptical filter plate 5 to form a water vortex and directly flows into the water flow buffer plate 15.

[0027] (2) After the rainwater passes through the primary screening ring filter plate 1, the main impurities are sucked into the ring perforated metal mesh plate 2. After most of the impurities are filtered and stored, the rainwater enters the bowl-shaped stainless steel diversion wall 7 and the arc-shaped metal diversion strip 8 to form a water vortex.

[0028] (3) After most of the debris in the rainwater is filtered and intercepted by (2), the rainwater enters the main acceleration device, the vortex accelerator 10, and forms a water vortex. The annular filter plate 1 of the primary screen has an annular filter gap design that will not destroy the annular water vortex.

[0029] The three vortex formation methods increase the fault tolerance of the device, and the accelerated rainwater all flow into the water flow buffer plate 15.

[0030] The main body connecting device C is connected and fixed to the main body filter device A and the water vortex accelerator B by the octagonal main body fixing device 13 and the circular porous fixing device 14.

[0031] The beneficial effects of this invention are:

[0032] The various components of this invention are manufactured in a modular fashion, allowing for rapid assembly and disassembly, and facilitating cleaning and maintenance. Cleaning and maintenance of the device are performed periodically by cleaning the main filter unit A.

[0033] While the present invention creates a water vortex to accelerate the collection of rainwater, the square filter screen 25 and the main filter device A can effectively prevent debris from clogging the device.

[0034] The present invention has three devices that can form water vortexes: an acceleration device consisting of a bowl-shaped stainless steel guide wall 7 and an arc-shaped metal guide strip 8, a vortex accelerator 10, and an arc-shaped vortex tube 4, which greatly improves the flow rate of the device and can still guide the flow normally even if one of the devices is blocked. Attached Figure Description

[0035] Figure 1 This is a cross-sectional view of the present invention.

[0036] Figure 2 for Figure 1 Perspective view of the bowl-shaped stainless steel drainage wall and the arc-shaped metal drainage strip.

[0037] Figure 3 This is an isometric view of the device.

[0038] Figure 4 This is a cross-sectional isometric view of the device.

[0039] Figure 5 for Figure 1 Rendering of the main connecting device C, the arc-shaped vortex tube, and the elliptical filter plate.

[0040] Figure 6 for Figure 1 A rendering of the vortex accelerator fixture and the vortex accelerator itself. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings.

[0042] The present invention will be further described in detail below with reference to the embodiments.

[0043] like Figure 1 — Figure 6 As shown: The quick-install water vortex speed-up rain grate is suitable for most hardened roads and areas next to hardened paving.

[0044] Main filtration device A

[0045] A portion of the rainwater passes through the primary annular filter plate 1, where most of the debris is intercepted. The rainwater then enters the annular perforated metal mesh plate 2, and finally enters the water vortex accelerator B. The remaining rainwater (containing intercepted large debris) passes directly through the primary annular filter plate 1 for preliminary filtration before entering the water vortex accelerator B. The primary annular filter plate 1 is located at the top of the device. When the device needs cleaning, the primary annular filter plate 1 and the annular perforated metal mesh plate 2 can be quickly disassembled sequentially to remove the filtered debris.

[0046] The primary screening annular filter plate 1 is composed of annular steel bars 16 and radial steel sheets 17, wherein the annular steel bars 16 and radial steel sheets 17 are welded vertically, and both are made of stainless steel with a thickness of 4mm.

[0047] The circular perforated metal mesh plate 2 is made of stainless steel with a thickness of 4mm, an inner ring radius of 200mm, an outer ring radius of 260mm, and an opening diameter of 4mm.

[0048] Water vortex accelerator B

[0049] The acceleration methods of the water vortex accelerator B include three types;

[0050] (1) Rainwater passes through the arc-shaped vortex pipe 4 and the elliptical filter plate 5 to form a water vortex and directly flows into the water flow buffer plate 15.

[0051] (2) After passing through the primary screening ring filter plate 1, the rainwater draws the main impurities into the ring perforated metal mesh plate 2, filters and stores most of the impurities, and then the rainwater enters the bowl-shaped stainless steel diversion wall 7 and the arc-shaped metal diversion strip 8 to form a water vortex.

[0052] (3) After most of the debris in the rainwater is filtered and intercepted by (2), the rainwater enters the main acceleration device, the vortex accelerator 10, and forms a water vortex. The annular filter plate 1 of the primary screen has an annular filter gap design that will not destroy the annular water vortex.

[0053] The arc-shaped vortex tube 4 is made of PE material with a thickness of 2mm, an inner diameter of 16mm, and an outer diameter of 18mm. It is arc-shaped and easily forms water vortices.

[0054] The elliptical filter plate 5 is made of stainless steel with a thickness of 2mm, an opening diameter of 4mm, and a hole spacing of 2mm.

[0055] The bowl-shaped stainless steel drainage wall 7 is made of stainless steel with a thickness of 4mm;

[0056] The arc-shaped metal drainage strip 8 is generally in line with the smooth arc of the bowl-shaped stainless steel drainage wall 7. The material is stainless steel and the thickness is 4mm.

[0057] The eddy current accelerator metal support rod 11 is generally cylindrical, made of stainless steel, with a height of 130mm and a diameter of 5mm.

[0058] The four-hole fixing plate 6 is composed of fixing screws 18 and square steel sheet 19. The fixing screws 18 are made of steel, 10mm in length, 0.4mm in pitch, round, and have an internal hexagonal head; the square steel sheet 19 is made of steel, 40mm in length and width, and 3mm in thickness.

[0059] The eddy current accelerator mounting frame 9 consists of an annular fixed metal plate 20, an annular overlapping steel sheet 21, a connecting rod 22, and a circular metal plate 23. The annular fixed metal plate 20 is fixedly connected by the connecting rod 22, with the circular metal plate 23 welded to its bottom, and the annular overlapping steel sheet 21 welded to its periphery for overlapping and fixing the annular perforated metal mesh plate 2. The annular fixed metal plate 20 is made of stainless steel with a concentric annular overlap; the annular overlapping steel sheet 21 is made of stainless steel, with a thickness of 2mm, an inner diameter of 200mm, and an outer diameter of 215mm; the connecting rod 22 is made of stainless steel with a thickness of 2mm; and the circular metal plate 23 is made of stainless steel with a thickness of 2mm and a radius of 75mm.

[0060] The vortex accelerator 10 is composed of several water-absorbing chambers 24 and square filter screens 25 spirally connected in a concentric manner. Each water-absorbing chamber 24 and square filter screen 25 is assembled one-to-one and attached to the vortex accelerator mounting frame 9 to accelerate the formation of water vortices. The water-absorbing chamber 24 is generally arc-shaped and stepped, with a hollow interior; the square filter screen 25 is made of iron wire and filters impurities.

[0061] Main connecting device C

[0062] The main body connection device C mainly relies on the octagonal main body fixer 13 and the circular porous fixer 14 to connect and fix the main body filter device A and the water vortex accelerator B.

[0063] The ground overlap plate 12 is made of stainless steel and is 3mm thick;

[0064] The octagonal main body fastener 13 is made of stainless steel, with a thickness of 4mm and a height of 45mm;

[0065] The circular multi-hole fastener 14 has a thickness of 5mm, a height of 50mm, an inner diameter of 145mm, and an outer diameter of 150mm.

[0066] The water flow buffer plate 15 is made of stainless steel, with a thickness of 2mm and a radius of 80mm.

[0067] Cleaning and maintenance

[0068] 1. Short-cycle maintenance intervals are approximately 1-3 months. Cleaning steps:

[0069] a. Open the primary screening ring filter plate 1 to clean large-volume debris.

[0070] b. After opening the primary screening annular filter plate 1, pick up the annular perforated metal mesh plate 2 for further cleaning.

[0071] 2. Long-term maintenance intervals are approximately 6-12 months. Cleaning steps:

[0072] a. Open the primary screening ring filter plate 1

[0073] b. Disassemble the eddy accelerator mounting bracket 9 and the eddy accelerator 10, and clean them with water. If the blockage is severe, the square filter screen 25 can be replaced.

Claims

1. A quick-installation water vortex speed-up rain grate, characterized in that, Includes main filtration device (A), water vortex accelerator (B), and main connection device (C); The main filter device (A) is used to filter impurities. The main filter device (A) includes a primary screening annular filter plate (1) and an annular perforated metal mesh plate (2). The primary screening annular filter plate (1) is used to initially filter branches, leaves and larger particles of gravel and debris. The annular perforated metal mesh plate (2) further filters small particles of impurities. Then, the impurities enter the water vortex accelerator (B) and finally, the rainwater is discharged. The water vortex accelerator (B) is used to receive rainwater filtered by the main filtration device (A), allowing the rainwater to form a vortex and thus accelerate it. The main connecting device (C) is used to connect and fix the main filter device (A) and the water vortex accelerator (B), so as to facilitate quick assembly and disassembly. The water vortex accelerator (B) includes an arc-shaped vortex tube (4), an elliptical filter plate (5), a four-hole fixed iron plate (6), a bowl-shaped stainless steel guide wall (7), an arc-shaped metal guide strip (8), a vortex accelerator mounting frame (9), a vortex accelerator (10), and a vortex accelerator metal support rod (11). The elliptical filter plate (5) is located at the water inlet of the top of the arc-shaped vortex tube (4). There are eight arc-shaped vortex tubes (4). Each arc-shaped vortex tube (4) is fixed at both ends by a four-hole fixing iron plate (6) between the upper octagonal main body fixing device (13) and the lower circular multi-hole fixing device (14). The elliptical filter plate (5) is placed on the octagonal main body fixing device (13). The octagonal main body fixing device (13) and the lower circular multi-hole fixing device (14) are connected by the arc-shaped vortex tube (4) in the middle. A bowl-shaped hollow structure is formed. The bowl-shaped stainless steel flow wall (7) has a smooth surface and is located below the annular perforated metal mesh plate (2). Arc-shaped metal flow strips (8) are welded to the surface of the bowl-shaped stainless steel flow wall (7) at equal intervals. The vortex accelerator fixing frame (9) overlaps the hollow part inside the annular perforated metal mesh plate (2). The vortex accelerator (10) overlaps and is fixed inside the vortex accelerator fixing frame (9). The vortex accelerator metal support rod (11) is fixed and supported at the bottom of the vortex accelerator fixing frame (9).

2. The quick-installation water vortex speed-up rain grate according to claim 1, characterized in that, The primary screening annular filter plate (1) is located at the top of the main filter device (A); the annular perforated metal mesh plate (2) is located at the bottom of the primary screening annular filter plate (1), and each component can be flexibly disassembled and assembled.

3. A quick-installation water vortex speed-up rain grate according to claim 2, characterized in that, The primary screening annular filter plate (1) includes annular steel bars (16) and radial steel sheets (17). The annular steel bars (16) are spaced 20 mm apart and arranged in a concentric circle. Eight radial steel sheets (17) are welded perpendicularly to the annular steel bars (16) at equal intervals and fixed to each other. The inner ring of the perforated metal mesh plate (2) has a radius of 200 mm and an outer ring has a radius of 260 mm. An internal hollow space is formed between the inner ring and the outer ring. Several openings with a diameter of 4 mm are provided on the surface of the perforated metal mesh plate (2).

4. A quick-installation water vortex speed-up rain grate according to claim 1, characterized in that, The arc-shaped vortex tube (4) has an inner diameter of 16mm and an outer diameter of 18mm. It is generally arc-shaped and easily forms water vortices. The elliptical filter plate (5) has an opening diameter of 4mm and a hole spacing of 2mm. The arc-shaped metal guide strip (8) is generally a smooth arc-shaped component that fits the bowl-shaped stainless steel guide wall (7). Several arc-shaped metal guide strips (8) are arranged in a circular shape. The water flow that converges here forms a water vortex and accelerates. The metal support rod (11) of the vortex accelerator is generally cylindrical.

5. A quick-installation water vortex speed-up rain grate according to claim 1, characterized in that, The four-hole type fixing plate (6) includes fixing screws (18) and square steel plates (19); the fixing screws (18) are round and have an internal hexagonal hole at the head, which are used to fix the arc-shaped vortex tube (4).

6. A quick-installation water vortex speed-up rain grate according to claim 1, characterized in that, The eddy accelerator mounting bracket (9) includes an annular fixed metal plate (20), an annular overlapping steel sheet (21), a connecting rod (22), and a circular metal plate (23); wherein the annular fixed metal plate (20) is fixedly connected by the connecting rod (22), the bottom of which is welded with a circular metal plate (23), and the outer periphery is welded with an annular overlapping steel sheet (21) for overlapping and fixing the annular perforated metal mesh plate (2). The annular fixed metal plate (20) overlaps in a concentric annular shape and is located below the eddy accelerator (10). The circular metal plate (23) is located at the bottom of the annular fixed metal plate (20).

7. A quick-installation water vortex speed-up rain grate according to claim 1, characterized in that, The vortex accelerator (10) includes several centripetal spiral water intake chambers (24) and square filter screens (25), forming a five-layer circular structure with the radius decreasing layer by layer, forming a funnel shape. Water flows converge here to form a water vortex. Each water intake chamber (24) and square filter screen (25) are assembled one-to-one, so that the water flowing into the water intake chamber (24) needs to be filtered by the square filter screen (25). The vortex accelerator (10) is attached to the vortex accelerator fixing frame (9) to accelerate the formation of the water vortex. The water intake chamber (24) is generally arc-shaped and hollow inside.

8. A quick-installation water vortex speed-up rain grate according to claim 1, characterized in that, The main connecting device (C) includes a ground overlapping plate (12), an octagonal main body fixer (13), a circular multi-hole fixer (14), and a water flow buffer plate (15). The ground overlapping plate (12) is an arc-edged triangle, with eight pieces in total, and is fixed above the octagonal main body fixer (13). The octagonal main body fixer (13) is octagonal in shape, and its edge fits the arc edge of the ground overlapping plate (12). It is located outside the primary screening annular filter plate (1) and the annular perforated metal mesh plate (2) and is used to fix the primary screening annular filter plate (1), the annular perforated metal mesh plate (2), and the arc-shaped vortex tube (4). The circular multi-hole fixer (14) is located at the bottom and is used to connect the lower end of the bowl-shaped stainless steel diversion wall (7) and fix the bottom of the arc-shaped vortex tube (4). The water flow buffer plate (15) is welded to the circular multi-hole fixer (14) and supports the metal support rod (11) of the vortex accelerator.

9. A method of using a quick-installation water vortex speed-up rain grate according to any one of claims 1-8, characterized in that, Includes the following steps; A portion of the rainwater passes through the primary screening annular filter plate (1), and after most of the debris is intercepted, the rainwater enters the annular perforated metal mesh plate (2) and finally enters the water vortex accelerator (B). Another portion of the rainwater containing large debris that is not intercepted passes directly through the primary screening annular filter plate (1) for preliminary filtration and enters the water vortex accelerator (B). The primary screening annular filter plate (1) is located at the top of the device. When the device needs to be cleaned, the primary screening annular filter plate (1) and the annular perforated metal mesh plate (2) can be quickly disassembled in sequence to clean out the filtered debris. The water vortex accelerator (B) has three acceleration methods; (1) Rainwater flows through the arc-shaped vortex tube (4) and the elliptical filter plate (5) to form a water vortex and directly flows into the water flow buffer plate (15). (2) After the rainwater passes through the primary screening ring filter plate (1), the main impurities are sucked into the ring perforated metal mesh plate (2). After most of the impurities are filtered and stored, the rainwater enters the bowl-shaped stainless steel diversion wall (7) and the arc-shaped metal diversion strip (8) to form a water vortex. (3) After most of the debris in the rainwater is filtered and intercepted by the annular perforated metal mesh plate (2), the rainwater enters the main acceleration device, the vortex accelerator (10), forming a water vortex. The annular filter plate (1) of the initial screening does not destroy the annular water vortex. The three vortex formation methods increase the fault tolerance of the device, and the accelerated rainwater finally flows into the water flow buffer plate (15). The main body connection device (C) is connected and fixed to the main body filter device (A) and the water vortex accelerator (B) by an octagonal main body fixer (13) and a circular porous fixer (14).

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