A gutter assembly for recovering water and a method of recovering water
By designing a drainage ditch component that can recycle water, including a recycling tank and a connecting water guide tank, the problem of the inability to reuse water in drainage ditches is solved, water filtration and transportation are realized, environmental protection is improved, and adjustment and operation are convenient.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-04-28
- Publication Date
- 2026-04-07
AI Technical Summary
The water discharged from the existing drainage ditches cannot be reused, which is detrimental to the environment, and the drainage ditches are inconvenient to adjust.
A drainage ditch assembly including a water recycling tank, a drain pipe, and a connecting water guide tank is designed. Through structures such as a diversion outlet, a water guide channel, a lifting plate, and a threaded rod, water filtration, collection, and transportation are realized to adapt to different drainage needs. The drain pipe is fixed by a spring damper.
It enables the reuse of water, improves environmental protection, facilitates the adjustment and operation of drainage ditches, and ensures the control of water flow and filtration effect.
Smart Images

Figure CN116517096B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of drainage ditch technology, specifically to a drainage ditch component capable of recycling water and its recycling method. Background Technology
[0002] Drainage ditches are ditches that direct water collected in side ditches, intercepting ditches, and low-lying areas near roadbeds, farmland, and residences to areas outside the roadbed, farmland, and residences. The inner walls of drainage ditches are mostly made of materials such as resin, concrete, and marble, and the water droplet angle is mostly between 30° and 80°.
[0003] Chinese patent CN207567913U discloses a drainage ditch cover with water-guiding effect, comprising a cover body, which includes a concave-facing micro-arc plate and horizontally arranged support plates extending to both sides of the micro-arc plate. The cover body is an integral inverted Ω-shaped structure formed by the micro-arc plate and the support plates. Several rows of drainage grooves are arranged side by side at equal intervals on the micro-arc plate, and the drainage grooves are arc-shaped strips. This patent is applicable to drainage ditches in areas with a lot of water accumulation, especially drainage ditches around square ground fountains. By setting the traditional flat cover plate into a concave-facing micro-arc plate structure, the arc-shaped structure has a water-guiding effect, which facilitates water to flow along the arc surface into the drainage ditch, improving drainage efficiency, and timely removing water from the ground, thereby promoting the recycling of fountain water.
[0004] In actual use, the drainage ditch of the above-mentioned patent cannot reuse the discharged water, which is not conducive to environmental protection, and the drainage ditch is inconvenient to adjust; therefore, it does not meet the existing needs. In this regard, we propose a drainage ditch component that can recycle water and its recycling method. Summary of the Invention
[0005] The purpose of this invention is to provide a drainage ditch component and a recycling method for recyclable water, which solves the problems mentioned in the background art that the water discharged from the drainage ditch cannot be reused, which is not conducive to environmental protection, and the drainage ditch is inconvenient to adjust.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a drainage ditch assembly for recyclable water, comprising a recycling tank, a drain pipe, and a connecting water guide tank, wherein two recycling tanks are provided, the two recycling tanks are respectively located on both sides of the drain pipe, and the connecting water guide tank is installed between the recycling tank and the drain pipe;
[0007] The recycled water tank includes a water collection plate, a filter plate is installed on the upper part of the water collection plate and the inside of the recycled water tank, and water guide pipes are provided on both sides of the inside of the recycled water tank. The water guide pipes are used to extract water from the inside of the recycled water tank.
[0008] Both sides of the inside of the drain pipe are provided with an integrally formed diversion outlet, which extends into the inside of the connecting water guide box and is sealed to the connecting water guide box through a sealing gasket.
[0009] The water guide tank is equipped with a lifting plate inside, which is used to open and close the water diversion port. A threaded rod runs through the inside of the lifting plate, and a rotating rod is installed at the upper end of the threaded rod.
[0010] Preferably, the upper part of the inside of the recycling tank is provided with an integrally formed sliding groove, the filter insert is slidably connected to the recycling tank through the sliding groove, and the filter insert is provided with a filter screen plate inside.
[0011] Preferably, an integrally formed water inlet is provided on one side of the water collection plate, which is used to connect to the water guide tank. An integrally formed water guide is provided on one side of the water guide tank, which is connected to the water inlet. An integrally formed water guide groove is provided inside the water guide tank, which is used to connect to the diversion water outlet. A waste material slide is provided at the lower end of the water guide groove, which is used to slide the settled waste into the drainage channel.
[0012] Preferably, the drain pipe has an integrally formed drainage channel inside, and there are two drain pipes. The lower end of each drain pipe is provided with a sealing slot, and a connecting block is installed between the two drain pipes. The connecting block is used to connect and seal the two drain pipes.
[0013] Preferably, a connecting block is installed at the upper end of the drain pipe, and bolts are installed inside the connecting block. The two drain pipes are fixedly connected by bolts. A spring damper is installed between the connecting water guide box and the drain pipe. The spring damper is used to maintain the positional stability of the drain pipe.
[0014] Preferably, the upper end of the drain pipe is provided with a notch, the position of which corresponds to the position of the rotating rod, and both sides of the upper end of the lifting plate are provided with integrally formed fixing plates, and the rotating rod is rotatably connected to the fixing plates through bearings.
[0015] Preferably, the interior of the connecting water guide tank is provided with an integrally formed sliding groove, and sealing gaskets are provided on both sides of the interior of the sliding groove. The lifting plate is slidably connected to the connecting water guide tank through the sliding groove, the threaded rod is threadedly connected to the lifting plate, and the lower end of the threaded rod is rotatably connected to the connecting water guide tank through a bearing sleeve.
[0016] A method for recycling a water-recyclable drainage ditch component includes the following steps:
[0017] Step 1: Install different numbers of drain pipes according to drainage needs. Install connecting blocks inside the sealing slots. Then, fix two corresponding connecting blocks with locking bolts. Press the connecting blocks to make them embed into the sealing slots and tightly connect the adjacent drain pipes.
[0018] Step 2: Embed the connecting water guide box into both sides of the drain pipe, connect the position of the water guide groove to the drain channel, seal the position of the water inlet to the water guide, and insert the spring damper to fix the connecting water guide box and the drain pipe.
[0019] Step 3: The drainage channel inside the drain pipe is used for drainage. During use, when the water level is higher than the branch outlet, the water enters the water guide channel and is guided into the water collection plate through the water guide outlet. During the guiding process, waste is screened out by the filter screen plate.
[0020] Step 4: Adjust the position of the lifting plate according to the water recovery requirements, twist the rotating rod to drive the threaded rod to rotate, so that the lifting plate moves inside the sliding groove, thereby adjusting the opening size of the water guide to meet the working requirements of water recovery.
[0021] Step 5: After water collection, extract the water through the water pipe, remove the filter plate, clean the surface of the filter screen plate, and continuously recycle the water for reuse.
[0022] Compared with the prior art, the beneficial effects of the present invention are:
[0023] 1. This invention embeds connecting water guide boxes into both sides of the drain pipe, connects the position of the water guide channel to the drain channel, seals the position of the inlet to the water guide port, and inserts a spring damper to fix the connecting water guide box to the drain pipe. Water can enter the connecting water guide boxes on both sides through the diversion port. The connecting water guide boxes can guide the water in the drain pipe that is higher than the diversion port into the water guide channel. The water is transported through the water guide channel. After the water flows above the waste slide, the upper clean water flows into the water guide port through the inclined waste slide. It is filtered by the filter screen plate above the water collection plate and recycled into the recycling tank. Thus, water can be recycled for reuse, which is beneficial to improving environmental protection.
[0024] 2. According to the requirements of water recovery, the position of the lifting plate is adjusted, the rotating rod is twisted, and the threaded rod is driven to rotate, so that the lifting plate moves inside the sliding groove, thereby adjusting the opening size of the water guide to meet the working requirements of water recovery. After water is collected, it is extracted through the water guide pipe, and the filter plate is removed. The surface of the filter screen plate is cleaned for continuous water recovery. It is convenient to adjust the work and control the flow rate of the recovered water. It is easy to switch on and off and clean, easy to operate, and conducive to long-term operation.
[0025] 3. This invention allows for the installation of different numbers of drainage pipes according to drainage needs. Connecting blocks are installed inside the sealed slots, and two corresponding connecting blocks are fixed by tightening bolts. The connecting blocks are pressed to embed into the sealed slots, tightly connecting adjacent drainage pipes for easy fixing. The connecting water guide box is embedded on both sides of the drainage pipes, the position of the water guide groove is connected to the drainage channel, and the position of the water inlet is sealed with the water guide port. A spring damper is inserted to fix the connecting water guide box to the drainage pipes, facilitating the connection of different numbers of drainage pipes and making it convenient and practical. Attached Figure Description
[0026] Figure 1 This is a front-view isometric view of the drainage ditch assembly for recyclable water according to the present invention.
[0027] Figure 2 This is a side isometric view of the drainage ditch assembly for recyclable water according to the present invention.
[0028] Figure 3 For the present invention Figure 2 Enlarged view of a portion of area A in the middle;
[0029] Figure 4 This is a top-view axonometric view of the drainage ditch assembly for recyclable water according to the present invention;
[0030] Figure 5 This is an isometric view of the front view of the drainage pipe of the present invention;
[0031] Figure 6 This is a diagram showing the internal structure of the water guide tank in this invention.
[0032] In the diagram: 1. Recycled water tank; 101. Water collection plate; 1011. Water inlet; 102. Filter plate; 1021. Filter screen plate; 103. Water guide pipe; 2. Drain pipe; 201. Diversion outlet; 202. Notch; 203. Connecting block; 204. Drainage channel; 205. Sealing slot; 3. Connecting water guide tank; 301. Spring damper; 302. Lifting plate; 3021. Fixing plate; 3022. Rotating rod; 3023. Threaded rod; 3024. Bearing sleeve; 303. Water guide outlet; 304. Water guide groove; 305. Sliding groove; 306. Waste slide; 4. Connecting block. Detailed Implementation
[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0034] To address the issues of existing drainage ditches failing to reuse water, which is detrimental to environmental protection, and the inconvenience of adjusting the ditches, please refer to [the relevant documentation / reference]. Figure 1 , Figure 5 - Figure 6 This embodiment provides the following technical solution:
[0035] A water-recyclable drainage ditch assembly includes a water recycling tank 1, a drain pipe 2, and a connecting water guide tank 3. Two water recycling tanks 1 are provided, with the two water recycling tanks 1 located on both sides of the drain pipe 2, and the connecting water guide tank 3 is installed between the water recycling tank 1 and the drain pipe 2.
[0036] The recycling water tank 1 includes a water collection plate 101, a filter plate 102 is installed on the upper part of the water collection plate 101 and the inside of the recycling water tank 1, and water guide pipes 103 are provided on both sides of the inside of the recycling water tank 1. The water guide pipes 103 are used to extract water from the inside of the recycling water tank 1.
[0037] Both sides of the inside of the drain pipe 2 are provided with an integrally formed diversion outlet 201. The diversion outlet 201 extends into the inside of the connecting water guide box 3 and is sealed to the connecting water guide box 3 through a sealing gasket.
[0038] The interior of the water guide tank 3 is equipped with a lifting plate 302, which is used to switch the diversion water outlet 201. A threaded rod 3023 passes through the interior of the lifting plate 302, and a rotating rod 3022 is installed at the upper end of the threaded rod 3023.
[0039] An integrally formed water inlet 1011 is provided on one side of the water collection plate 101. The water inlet 1011 is used to connect to the water guide tank 3. An integrally formed water guide 303 is provided on the side connected to the water guide tank 3. The water guide 303 is connected to the water inlet 1011. An integrally formed water guide trough 304 is provided inside the water guide tank 3. The water guide trough 304 is used to connect to the diversion water inlet 201. A waste material slide 306 is provided at the lower end of the water guide trough 304. The waste material slide 306 is used to slide the settled waste into the drainage channel 204.
[0040] Specifically, the water can enter the connecting water tanks 3 on both sides through the diversion outlet 201. The connecting water tanks 3 can guide the water in the drain pipe 2 that is higher than the diversion outlet 201 into the water guide channel 304. The water is transported through the water guide channel 304. After the water flows above the waste slide 306, the upper clean water flows into the water guide outlet 303 through the inclined waste slide 306. It is filtered by the filter screen plate 1021 above the water collection plate 101 and the clean water is recycled into the recycling water tank 1. Thus, the water can be recycled for reuse, which is beneficial to improving the environmental protection effect.
[0041] To address the technical problem in existing technologies where drainage components are inconvenient to install and hinder subsequent work, please refer to [link / reference needed]. Figure 1 - Figure 5 The following technical solutions are provided:
[0042] The upper part of the inside of the recycling water tank 1 is provided with an integrally formed sliding groove. The filter plate 102 is slidably connected to the recycling water tank 1 through the sliding groove. The filter plate 102 is provided with a filter screen plate 1021 inside.
[0043] The drain pipe 2 has an integrally formed drain channel 204 inside, and there are two drain pipes 2. The lower end of each drain pipe 2 is provided with a sealing slot 205, and a connecting plug 4 is installed between the two drain pipes 2. The connecting plug 4 is used to connect and seal the two drain pipes 2.
[0044] A connecting block 203 is installed at the upper end of the drain pipe 2. Bolts are installed inside the connecting block 203, and the two drain pipes 2 are fixedly connected by bolts. A spring damper 301 is installed between the water guide tank 3 and the drain pipe 2. The spring damper 301 is used to maintain the positional stability of the drain pipe 2.
[0045] Specifically, different numbers of drain pipes 2 are installed. Connecting blocks 4 are installed inside the sealing slots 205. Two corresponding connecting blocks 203 are fixed by tightening bolts. The connecting blocks 4 are pressed to embed into the sealing slots 205 and tightly connect adjacent drain pipes 2 for easy fixing. The connecting water guide box 3 is embedded on both sides of the drain pipe 2. The position of the water guide groove 304 is connected to the drainage channel 204. The position of the inlet 1011 is sealed with the water guide 303. The spring damper 301 is inserted to fix the connecting water guide box 3 to the drain pipe 2. This makes it easy to connect different numbers of drain pipes 2, which is convenient and practical.
[0046] To address the technical problem that existing water recovery components have mediocre filtration efficiency, which is detrimental to long-term use, please refer to [link to relevant documentation]. Figure 2 - Figure 3 , Figure 5 - Figure 6 The following technical solutions are provided:
[0047] The upper end of the drain pipe 2 is provided with a notch 202, the position of which corresponds to the position of the rotating rod 3022. Both sides of the upper end of the lifting plate 302 are provided with integrally formed fixing plates 3021. The rotating rod 3022 is rotatably connected to the fixing plates 3021 through bearings.
[0048] The interior of the connecting water tank 3 is provided with an integrally formed sliding groove 305. Both sides of the sliding groove 305 are provided with sealing gaskets. The lifting plate 302 is slidably connected to the connecting water tank 3 through the sliding groove 305. The threaded rod 3023 is threadedly connected to the lifting plate 302, and the lower end of the threaded rod 3023 is rotatably connected to the connecting water tank 3 through the bearing sleeve 3024.
[0049] Specifically, during use, the position of the lifting plate 302 is adjusted, the rotating rod 3022 is twisted, and the threaded rod 3023 is rotated, causing the lifting plate 302 to move inside the sliding groove 305, thereby adjusting the opening size of the water guide 303 to meet the working requirements of the recycled water. After the water is collected, it is extracted through the water guide pipe 103, and the filter plate 102 is removed. The surface of the filter screen plate 1021 is cleaned for continuous recycled water use. It is convenient to adjust the work and control the flow rate of the recycled water. It is easy to switch on and off and clean, easy to operate, and conducive to long-term operation.
[0050] Please see Figure 1 - Figure 6 A method for recycling a water-recyclable drainage ditch component includes the following steps:
[0051] Step 1: Install different numbers of drain pipes 2 according to drainage requirements. Install connecting blocks 4 inside the sealing slot 205. Then, fix two corresponding connecting blocks 203 by tightening bolts. Press the connecting blocks 4 so that they are embedded in the sealing slot 205 and tightly connect the adjacent drain pipes 2.
[0052] Step 2: Embed the connecting water guide box 3 into both sides of the drain pipe 2, connect the position of the water guide groove 304 to the drain channel 204, seal the position of the inlet 1011 to the water guide 303, and insert the spring damper 301 to fix the connecting water guide box 3 and the drain pipe 2.
[0053] Step 3: The drainage channel 204 inside the drain pipe 2 is used for drainage. During use, when the water level is higher than the branch outlet 201, the water enters the water guide trough 304 and is guided into the water collection plate 101 through the water guide 303. During the guiding process, waste is screened out by the filter screen plate 1021.
[0054] Step 4: Adjust the position of the lifting plate 302 according to the water recovery requirements, twist the rotating rod 3022 to drive the threaded rod 3023 to rotate, so that the lifting plate 302 moves inside the sliding groove 305, thereby adjusting the opening size of the water guide 303 to meet the working requirements of water recovery.
[0055] Step 5: After water collection, extract the water through the water pipe 103, remove the filter plate 102, clean the surface of the filter screen plate 1021, and continuously recycle the water for reuse.
[0056] Working principle: Depending on drainage requirements, different numbers of drain pipes 2 are installed. Connecting blocks 4 are installed inside the sealing slot 205. Two corresponding connecting blocks 203 are fixed by tightening bolts. Pressing the connecting blocks 4 causes them to embed tightly into the sealing slot 205, connecting adjacent drain pipes 2 for easy fixing. Connecting water guide boxes 3 are embedded on both sides of the drain pipes 2. The position of the water guide groove 304 is connected to the drainage channel 204. The position of the inlet 1011 is sealed to the water guide port 303. The spring damper 301 is engaged to fix the connecting water guide box 3 to the drain pipes 2, facilitating the connection of different numbers of drain pipes 2. During use, the position of the lifting plate 302 is adjusted, and the rotating rod 3022 is twisted, causing the threaded rod 3023 to rotate, moving the lifting plate 302 inside the sliding groove 305, thereby adjusting the opening size of the water guide port 303 to accommodate recycling. The water is collected and then extracted through the water pipe 103. The filter plate 102 is removed, and the surface of the filter screen plate 1021 is cleaned. Continuous water recycling is then performed. The system allows for easy adjustment and control of the recycled water flow, facilitating switching and cleaning. The water enters the connecting water tanks 3 on both sides through the diversion port 201. The water is guided through the connecting water tanks 3, allowing water above the diversion port 201 in the drain pipe 2 to flow into the water guide trough 304. The water is then transported through the water guide trough 304. After flowing above the waste slide 306, the upper clean water flows into the water guide port 303 through the inclined waste slide 306. The water is then filtered through the filter screen plate 1021 above the water collection plate 101, and the clean water is recycled into the recycling water tank 1. This allows for water recycling and reuse, which is beneficial for improving environmental protection.
[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A drainage ditch assembly for recyclable water, comprising a water recycling tank (1), a drain pipe (2), and a connecting water guide tank (3), characterized in that, There are two recycling water tanks (1), which are located on both sides of the drain pipe (2) respectively. The connecting water guide tank (3) is installed between the recycling water tank (1) and the drain pipe (2). The recycling water tank (1) includes a water collection plate (101), a filter plate (102) is installed on the upper part of the water collection plate (101) and the inside of the recycling water tank (1), and water guide pipes (103) are provided on both sides of the inside of the recycling water tank (1). The water guide pipes (103) are used to extract water from the inside of the recycling water tank (1). Both sides of the drain pipe (2) are provided with integrally formed diversion outlets (201), and the diversion outlets (201) extend into the interior of the connecting water guide box (3) and are sealed to the connecting water guide box (3) through a sealing gasket. A connecting block (203) is installed at the upper end of the drain pipe (2). Bolts are installed inside the connecting block (203), and the two drain pipes (2) are fixedly connected by bolts. A spring damper (301) is installed between the connecting water guide box (3) and the drain pipe (2). The spring damper (301) is used to maintain the positional stability of the drain pipe (2). The water guide tank (3) is equipped with a lifting plate (302) inside. The lifting plate (302) is used to switch the diversion water outlet (201). A threaded rod (3023) passes through the inside of the lifting plate (302). A rotating rod (3022) is installed at the upper end of the threaded rod (3023). The upper end of the drain pipe (2) is provided with a notch (202), the position of the notch (202) corresponds to the position of the rotating rod (3022), and both sides of the upper end of the lifting plate (302) are provided with integrally formed fixing plates (3021). The rotating rod (3022) is rotatably connected to the fixing plate (3021) through bearings. The interior of the connecting water guide tank (3) is provided with an integrally formed sliding groove (305). Both sides of the sliding groove (305) are provided with sealing gaskets. The lifting plate (302) is slidably connected to the connecting water guide tank (3) through the sliding groove (305). The threaded rod (3023) is threadedly connected to the lifting plate (302), and the lower end of the threaded rod (3023) is rotatably connected to the connecting water guide tank (3) through the bearing sleeve (3024).
2. The water-recyclable drainage ditch assembly according to claim 1, characterized in that: The upper part of the inside of the recycling tank (1) is provided with an integrally formed sliding groove. The filter insert (102) is slidably connected to the recycling tank (1) through the sliding groove. The filter insert (102) is provided with a filter screen plate (1021) inside.
3. A water-recycling drainage ditch assembly according to claim 2, characterized in that: The water collection plate (101) has an integrally formed water inlet (1011) on one side inside. The water inlet (1011) is used to connect to the water guide tank (3). The water guide tank (3) has an integrally formed water guide (303) on one side. The water guide (303) is connected to the water inlet (1011). The water guide tank (3) has an integrally formed water guide groove (304) inside. The water guide groove (304) is used to connect to the diversion water outlet (201). The lower end of the water guide groove (304) has a waste slide (306) inside. The waste slide (306) is used to slide the settled waste into the drainage channel (204).
4. A water-recycling drainage ditch assembly according to claim 3, characterized in that: The drain pipe (2) has an integrally formed drain channel (204) inside, and there are two drain pipes (2). The lower ends of the two drain pipes (2) are provided with sealing slots (205), and a connecting plug (4) is installed between the two drain pipes (2). The connecting plug (4) is used to connect and seal the two drain pipes (2).
5. A method for recycling the recyclable water drainage ditch assembly according to claim 4, characterized in that, Includes the following steps: Step 1: Install different numbers of drain pipes (2) according to the drainage requirements. Install connecting blocks (4) inside the sealing slot (205). Then, fix the two corresponding connecting blocks (203) by tightening the bolts. Press the connecting blocks (4) so that the connecting blocks (4) are embedded in the sealing slot (205) and tightly connect the adjacent drain pipes (2). Step 2: Embed the connecting water guide box (3) into both sides of the drain pipe (2), connect the position of the water guide groove (304) to the drain channel (204), seal the position of the inlet (1011) to the water guide (303), and insert the spring damper (301) to fix the connecting water guide box (3) and the drain pipe (2); Step 3: The drainage channel (204) inside the drain pipe (2) is used for drainage. During use, when the water level is higher than the branch outlet (201), the water enters the water guide trough (304) and is introduced into the water collection plate (101) through the water guide outlet (303). During the introduction process, waste is screened out through the filter screen plate (1021). Step 4: Adjust the position of the lifting plate (302) according to the water recovery requirements, twist the rotating rod (3022) to drive the threaded rod (3023) to rotate, so that the lifting plate (302) moves inside the sliding groove (305), thereby adjusting the opening size of the water guide (303) to meet the working requirements of water recovery. Step 5: After water collection, water is extracted through the water pipe (103), and the filter plate (102) is removed. The surface of the filter screen plate (1021) is cleaned for continuous water recycling.
Citation Information
Patent Citations
Drainage ditch cover plate with water guide effect
CN207567913U
Road water draining and filtering structure
CN217174234U