Intelligent well lid for sponge city

By using the multi-stage filter holes and diversion holes of the smart manhole cover, combined with the linkage of magnetic and elastic components, the problems of easy clogging and poor drainage of the manhole cover are solved, realizing adaptive drainage and automatic cleaning, and ensuring the city's flood control capabilities.

CN121251004BActive Publication Date: 2026-03-03JINCHENG KEYUDA CASTING CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202511815708.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-04
Publication Date
2026-03-03
Estimated Expiration
2045-12-04

AI Technical Summary

Technical Problem

The existing manhole covers, with their single drainage method, cannot simultaneously address the issues of debris accumulation in pipes due to large orifices and easy clogging in small orifices. They also lack an adaptive drainage regulation mechanism based on rainfall, resulting in poor drainage during heavy rainfall and increasing the risk of urban flooding.

Method used

A smart manhole cover was designed, comprising a manhole ring, a manhole cover body, an elastic telescopic unit, a load-bearing ring, and a sewage interception basket. Through the design of multi-stage filter holes and diversion holes, combined with the linkage of magnetic components and elastic components, it can achieve multi-stage interception and diversion, automatically clean up debris, and adaptively adjust the drainage volume.

Benefits of technology

It effectively prevents manhole cover blockage, ensures smooth drainage during heavy rainfall, reduces the intensity of manual maintenance, improves drainage capacity under extreme weather conditions, and achieves self-cleaning function to ensure stable operation of the drainage system.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121251004B_ABST
    Figure CN121251004B_ABST
Patent Text Reader

Abstract

This invention relates to the field of sponge cities, and more particularly to a smart manhole cover for sponge cities. A smart manhole cover for sponge cities includes a manhole ring and a manhole cover body; the manhole ring is movably connected to the manhole cover body; the manhole cover body has several water inlet holes; the manhole ring has a sealing platform; the manhole cover body cooperates with the sealing platform; and a rubber sealing gasket is provided on the sealing platform. This invention achieves primary filtration through the water inlet holes and interception columns. The first and second filter holes of the intercepting basket intercept debris in stages. Combined with a first elastic element and a load-bearing ring, it prevents the first and second filter holes from becoming blocked, thus avoiding drainage problems and flooding. The multi-stage diversion holes ensure smooth drainage during heavy rainfall. Simultaneously, the automatic lifting function of the intercepting basket can clean the filter screen of the diversion holes, effectively preventing urban flooding and significantly reducing the intensity of manual maintenance.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of sponge cities, and more particularly to a smart manhole cover for sponge cities. Background Technology

[0002] Sponge city, as a new generation of stormwater management concept, is based on building a "water-resilient city" system with environmental adaptability and disaster resilience. The unobstructed access of manhole covers and drainage channels is directly related to the city's flood control capabilities.

[0003] In existing technologies, improvements to the manhole cover itself, such as vortex manhole covers, are made to prevent clogging and increase drainage. However, when there is only a single drainage method, if the drainage hole is large, a large amount of debris will enter the rainwater and sewage pipes, increasing the difficulty of subsequent cleaning of the rainwater and sewage pipes. If the drainage hole is small, it is easy to cause the drainage hole to become blocked, resulting in poor drainage. This can lead to poor drainage during heavy rainfall and cause the risk of urban flooding. Summary of the Invention

[0004] To overcome the contradiction that a single drainage method cannot simultaneously address the issues of debris accumulation in pipes with large orifices and easy clogging in pipes with small orifices, and the lack of an adaptive drainage regulation mechanism for rainfall, which leads to poor drainage during heavy rainfall and the risk of urban flooding, this invention provides a smart manhole cover for sponge cities.

[0005] The technical solution of this invention is as follows: a smart manhole cover for sponge cities, comprising a manhole ring and a manhole cover body; the manhole ring is movably connected to the manhole cover body; the manhole cover body has several water inlet holes; the manhole ring is provided with a sealing platform; the manhole cover body cooperates with the sealing platform; a rubber sealing gasket is provided on the sealing platform; it also includes an elastic telescopic unit, a load-bearing ring, and a sludge trap; the manhole ring is connected to the elastic telescopic unit; the elastic telescopic unit is connected to the load-bearing ring; the elastic telescopic unit is used to slowly lower the load-bearing ring; the load-bearing ring is slidably connected to the manhole ring; the sludge trap is detachably connected to the load-bearing ring; the sludge trap is slidably connected to the manhole ring; the sludge trap consists of a conical part and a cylindrical part; the conical part has several first water filter holes; the cylindrical part has several second water filter holes on its side wall and bottom wall; the manhole ring has a diversion cavity on its side wall; the diversion cavity has several diversion holes at its upper part; the diversion holes are located at different horizontal heights; the diversion cavity has several drainage outlets at its lower part.

[0006] More preferably, the elastic telescopic unit includes a first elastic element and a movable rod; a plurality of first elastic elements are fixedly connected to the inner wall of the diversion cavity; each first elastic element is fixedly connected to a movable rod; each movable rod passes through the middle of a first elastic element, and one end of each first elastic element is fixedly connected to the inner wall of the diversion cavity, and the other end of the first elastic element is fixedly connected to the corresponding movable rod; all movable rods penetrate the diversion cavity, and all movable rods are slidably connected to the well ring; all movable rods are together fixedly connected to the load-bearing ring.

[0007] More preferably, several intercepting posts are evenly arranged around the water inlet hole of the manhole cover.

[0008] More preferably, a filter screen is provided at the diversion hole.

[0009] More preferably, the upper part of the load-bearing ring is provided with an inner chamfer.

[0010] More preferably, the diameter of the first filter hole is larger than the diameter of the second filter hole.

[0011] More preferably, it also includes a protective shell, a movable pipe, and a flow-stopping ring; the well ring is fixedly connected to several protective shells; the well ring has a diversion groove; several straight grooves are opened on the side of the diversion cavity away from the drain outlet; each straight groove is connected to a protective shell; several movable pipes are slidably connected to the well ring; each movable pipe is located in a corresponding protective shell; all movable pipes pass through the diversion groove together, and all movable pipes are fixedly connected to and connected to the flow-stopping ring; the flow-stopping ring is located in the diversion groove.

[0012] More preferably, the flow-blocking ring has an annular groove inside.

[0013] More preferably, a metal filter screen is provided at the opening of the annular groove of the intercepting ring.

[0014] More preferably, it also includes a second elastic element, a horizontal plate, a shut-off valve, a first magnetic element, and a second magnetic element; each protective shell is fixedly connected to a second elastic element; each second elastic element is fixedly connected to a horizontal plate; the horizontal plate is a hollow plate with an opening on the side facing the center of the well ring; all horizontal plates are connected to the diversion chamber; each horizontal plate is connected to a movable pipe; a shut-off valve is slidably connected inside each horizontal plate; the shut-off valve is used to seal the horizontal plate; each shut-off valve is fixedly connected to a first magnetic element; each movable rod is fixedly connected to a second magnetic element; each second magnetic element cooperates with a first magnetic element; each horizontal plate is provided with a limiting ring; each limiting ring corresponds to the position of a first magnetic element; each second magnetic element contacts and cooperates with a limiting ring.

[0015] The beneficial effects of this invention are as follows: 1. This invention achieves primary filtration through the water inlet and the interception column. The first and second filter holes of the interception basket intercept debris in stages. The first elastic element and the load-bearing ring prevent the first and second filter holes from being blocked, which would lead to poor drainage and waterlogging. The multi-stage diversion holes ensure smooth drainage during heavy rainfall. At the same time, the automatic lifting function of the interception basket can clean the filter screen of the diversion holes, which not only effectively prevents urban waterlogging but also greatly reduces the intensity of manual maintenance.

[0016] 2. Multi-stage drainage regulation is achieved through the linkage design of the intercepting ring and the horizontal plate. During heavy rainfall, the second magnetic component works with the first magnetic component to automatically open the intercepting ring to assist drainage. As the rainfall continues to increase, the intercepting basket continues to move downward, squeezing and deforming the second elastic component. The intercepting ring moves down along the diversion channel, thereby forming a concave ring around the well ring, increasing the water storage capacity of the intercepting ring and enhancing the diversion capacity of the diversion channel. At the same time, when the intercepting ring resets, it automatically cleans the debris in the diversion channel, which not only significantly improves the drainage capacity under extreme weather conditions and achieves a self-cleaning function, but also effectively ensures the stable operation of the drainage system and reduces maintenance risks. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the smart manhole cover for sponge cities according to the present invention;

[0018] Figure 2 This is a cross-sectional view of the smart manhole cover for sponge cities according to the present invention;

[0019] Figure 3 This is a schematic diagram of the installation position of the load-bearing ring of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the protective shell of the present invention;

[0021] Figure 5 This is a schematic diagram showing the installation positions of the shut-off valve, the first magnetic component, and the second magnetic component of the present invention.

[0022] Figure 6 This is a schematic diagram of the drainage system formed by the movable rod and the cross plate of the present invention.

[0023] The markings in the diagram are as follows: 1-Well ring, 2-Well cover body, 3-First elastic element, 4-Moving rod, 5-Bearing ring, 6-Sewage interception basket, 7-Protective shell, 8-Second elastic element, 9-Horizontal plate, 10-Moving pipe, 11-Intercepting ring, 12-Stop valve, 13-First magnetic element, 14-Second magnetic element, 101-Sealing platform, 102-Diverting cavity, 103-Diverting hole, 104-Drain outlet, 105-Diverting groove, 106-Straight groove, 201-Water inlet hole, 202-Intercepting column, 601-Conical part, 602-Cylindrical part, 603-First filter hole, 604-Second filter hole, 901-Limiting ring. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0025] Implementation Method 1: A smart manhole cover for sponge cities, based on... Figures 1-4As shown, it includes a well ring 1 and a well cover body 2; the well ring 1 is hinged to the well cover body 2; the well cover body 2 has several water inlet holes 201; the well ring 1 is provided with a sealing platform 101; the well cover body 2 cooperates with the sealing platform 101; the sealing platform 101 is provided with a rubber sealing gasket for sealing between the well ring 1 and the well cover body 2.

[0026] It also includes an elastic telescopic unit, a load-bearing ring 5, and a sludge trap 6; the well ring 1 is connected to the elastic telescopic unit; the upper part of the elastic telescopic unit is connected to the load-bearing ring 5; the load-bearing ring 5 is slidably connected to the well ring 1; the sludge trap 6 is detachably connected to the load-bearing ring 5; the sludge trap 6 is slidably connected to the well ring 1; the sludge trap 6 is composed of an upper conical part 601 and a lower cylindrical part 602; the conical part 601 has several first filter holes 603 arranged in a ring array; the cylindrical part 602 has several second filter holes 604 on its side wall and bottom wall; the well ring 1 has a diversion cavity 102 on its side wall; the diversion cavity 102 has several diversion holes 103 arranged in a ring array on its upper part; the diversion holes 103 are located at different horizontal heights; the diversion cavity 102 has several drain outlets 104 arranged in a ring array on its lower part.

[0027] The elastic telescopic unit includes a first elastic element 3 and a movable rod 4; four first elastic elements 3 arranged in a ring array are fixedly connected to the inner wall of the diversion cavity 102; the first elastic elements 3 are tension springs; each first elastic element 3 has a movable rod 4 fixedly connected to its lower part; each movable rod 4 passes through the middle of a first elastic element 3, and one end of each first elastic element 3 is fixedly connected to the inner wall of the diversion cavity 102, and the other end of the first elastic element 3 is fixedly connected to the corresponding movable rod 4; all movable rods 4 pass through the diversion cavity 102, and all movable rods 4 are slidably connected to the well ring 1; the upper part of all movable rods 4 is fixedly connected to the load-bearing ring 5.

[0028] Several intercepting posts 202 are evenly arranged around the water inlet 201 of the manhole cover body 2 to intercept debris entering the water inlet 201.

[0029] A filter screen is provided at the diversion hole 103 to intercept impurities in the rainwater passing through the diversion hole 103, so that the impurities can be scraped off when the basket 6 moves upward.

[0030] The upper part of the load-bearing ring 5 is provided with an inner chamfer to increase the contact area between the load-bearing ring 5 and the sewage basket 6, and to prevent misalignment between the load-bearing ring 5 and the sewage basket 6.

[0031] The diameter of the first filter hole 603 is larger than that of the second filter hole 604, and is used to trap dirt and debris through the cylindrical part 602.

[0032] The working steps of the above embodiments are as follows:

[0033] During rainfall, rainwater flows along the ground towards the low-lying manhole cover body 2. Therefore, rainwater easily carries away debris such as fallen leaves and branches. When the rainwater reaches the manhole cover body 2, it flows downwards through the inlet hole 201. The intercepting column 202 intercepts the debris carried in the rainwater, reducing clogging of the inlet hole 201. The rainwater then flows onto the intercepting basket 6, which further intercepts the debris mixed in with the rainwater. The rainwater flows downwards along the surface of the conical part 601. When it passes the first filter hole 603, the rainwater can pass directly through the first filter hole 603, without passing through the second filter hole 603. Rainwater flows into the cylindrical part 602 through the first filter hole 603. The inner diameter of the second filter hole 604 is smaller than that of the first filter hole 603. Most of the debris is intercepted at the position of the cylindrical part 602. If the second filter hole 604 is blocked by impurities, the rainwater level in the trap basket 6 rises. At the same time, the blocked second filter hole 604 also tightly sucks up the debris, so that the debris will not float up with the rise of the liquid level. When the liquid level reaches the height of the first filter hole 603, the rainwater overflows and flows downward through the first filter hole 603, thereby reducing the blockage at the first filter hole 603.

[0034] As rainfall continues, the amount of debris intercepted on the intercepting basket 6 increases, especially during periods of heavy rainfall. This can cause the first filter hole 603 to become blocked, preventing rainwater from passing through. The rainwater then stagnates on the basket, increasing its weight and causing the load-bearing ring 5 to press downwards. This stretches and deforms all the first elastic elements 3, causing the basket 6 and its related components to move downwards. When the basket 6 passes the diversion hole 103, the rainwater is diverted through it, entering the diversion chamber 102 and then exiting through the lower drain outlet 104. The diversion holes 103 are located at different heights; if the upper diversion hole 103 becomes blocked, the basket 6 continues to move downwards to continue drainage. This effectively prevents waterlogging caused by blocked first and second filter holes 603 and 604.

[0035] After the rainfall stops, no more rainwater flows onto the intercepting basket 6. The rainwater slowly seeps out through the first filter hole 603 and the second filter hole 604, reducing the weight of the intercepting basket 6. The first elastic element 3 returns to its original state, simultaneously driving the movable rod 4 and its corresponding parts to move upward. The intercepting basket 6 slides up the inner wall of the well ring 1. When the intercepting basket 6 passes through the positions of each diversion hole 103, it scrapes away the debris intercepted by the filter screen on the diversion hole 103, realizing automatic cleaning of the diversion hole 103. This greatly reduces the cleaning workload of the staff. The staff periodically opens the well cover body 2, then inserts the iron hook into the well opening, passes the iron hook through the first filter hole 603, and then lifts the intercepting basket 6 upward. After cleaning the intercepting basket 6, the staff can then reset the intercepting basket 6.

[0036] Second embodiment: Based on the first embodiment, according to Figures 1-6As shown, it also includes a protective shell 7, a movable pipe 10, and a flow-blocking ring 11; four protective shells 7 arranged in a ring array are fixedly connected to the lower part of the well ring 1; a diversion groove 105 is opened on the upper part of the well ring 1; several straight grooves 106 are opened on the side of the diversion cavity 102 away from the drain outlet 104; each straight groove 106 is connected to a protective shell 7; four movable pipes 10 arranged in a ring array are slidably connected to the well ring 1; each movable pipe 10 is located in the corresponding protective shell 7; all movable pipes 10 pass through the diversion groove 105, and all movable pipes 10 are fixedly connected to and connected to the flow-blocking ring 11; the flow-blocking ring 11 is located in the diversion groove 105.

[0037] The intercepting ring 11 has an annular groove inside, which is used to store rainwater.

[0038] A metal filter screen is provided at the opening of the annular groove of the intercepting ring 11.

[0039] It also includes a second elastic element 8, a horizontal plate 9, a shut-off valve 12, a first magnetic element 13, and a second magnetic element 14; each protective shell 7 has a second elastic element 8 fixedly connected to its lower part; the second elastic element 8 is a damping spring; each second elastic element 8 has a horizontal plate 9 fixedly connected to its upper part; the horizontal plate 9 is a hollow plate with an opening on one side facing the middle of the well ring 1; all horizontal plates 9 are connected to the diversion chamber 102; each horizontal plate 9 is connected to a movable tube 10; a shut-off valve 12 is slidably connected inside each horizontal plate 9; a first magnetic element 13 is fixedly connected to each shut-off valve 12; a second magnetic element 14 is fixedly connected to the lower part of each movable rod 4; each second magnetic element 14 cooperates with a first magnetic element 13; each horizontal plate 9 has a limiting ring 901 on its upper part; each limiting ring 901 corresponds to the position of a first magnetic element 13; each second magnetic element 14 contacts and cooperates with a limiting ring 901.

[0040] The working steps of the above embodiments are as follows:

[0041] Based on the first embodiment, when the rainfall is heavy, the drainage capacity of the inlet 201 is limited and it is easily blocked. Therefore, by adding a flow intercepting ring 11, when the waste basket 6 is blocked by debris, the drainage efficiency of the manhole cover body 2 decreases. At the same time, when the waste basket 6 moves downward, the movable rod 4 moves downward and contacts the limiting ring 901. The second magnetic element 14 at the lower part of the movable rod 4 attracts the first magnetic element 13, and the first magnetic element 13 moves upward. The first magnetic element 13 opens the horizontal plate 9, such as... Figure 6 As shown in the right figure, at this time, rainwater on the ground can not only be discharged downward through the water inlet 201, but also through the intercepting ring 11. When the rainwater enters the intercepting ring 11, the metal filter on the intercepting ring 11 filters the rainwater. The rainwater enters the horizontal plate 9 through the movable pipe 10, then flows into the diversion chamber 102, and finally is discharged through the drain outlet 104, reducing the drainage pressure of the manhole cover body 2.

[0042] As rainfall continues to increase, the intercepting basket 6 continues to move downwards, the second elastic element 8 is compressed and deformed, the horizontal plate 9 moves down along the straight groove 106, the movable rod 4 presses down the limiting ring 901, causing the horizontal plate 9 and related components to move down, the intercepting ring 11 moves down along the diversion groove 105, thereby forming a concave ring around the well ring 1, increasing the water storage capacity of the intercepting ring 11, enhancing the diversion capacity of the diversion groove 105, and further improving the drainage capacity.

[0043] After the rainfall stops, rainwater slowly seeps into the intercepting basket 6, and the basket 6 moves upward. The second elastic element 8 resets, simultaneously driving the horizontal plate 9 and its corresponding parts to move upward. After the horizontal plate 9 reaches the top of the slotted groove 106, the intercepting ring 11 resets, while the second magnetic element 14 continues to move upward, causing the second magnetic element 14 to separate from the limiting ring 901. The second magnetic element 14 separates from the first magnetic element 13, and the first magnetic element 13 begins to fall back. The horizontal plate 9 closes again. Figure 6 As shown in the left figure, when the intercepting ring 11 moves upward in the diversion channel 105, it also pushes the debris in the diversion channel 105 upward, making it easier for the staff to clean up the debris later. In addition, by opening an annular groove in the intercepting ring 11, some rainwater can be stored after the intercepting ring 11 is reset, reducing the water accumulation on the ground. When there is plenty of sunshine, it can also prevent the staff from being scalded when cleaning the drainage well.

[0044] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A smart manhole cover for sponge cities, comprising a manhole ring (1) and a manhole cover body (2); the manhole ring (1) is movably connected to the manhole cover body (2); the manhole cover body (2) has a plurality of water inlet holes (201); the manhole ring (1) is provided with a sealing platform (101); the manhole cover body (2) cooperates with the sealing platform (101); characterized in that: It also includes an elastic telescopic unit, a load-bearing ring (5), and a sludge trap (6); the well ring (1) is connected to the elastic telescopic unit; the elastic telescopic unit is connected to the load-bearing ring (5); the elastic telescopic unit is used to slowly lower the load-bearing ring (5); the load-bearing ring (5) is slidably connected to the well ring (1); the sludge trap (6) is detachably connected to the load-bearing ring (5); the sludge trap (6) is slidably connected to the well ring (1); the sludge trap (6) consists of a conical part (601) and a cylindrical part. The well ring (1) is composed of a conical part (601) with several first filter holes (603) on it; the cylindrical part (602) has several second filter holes (604) on its side wall and bottom wall; the well ring (1) has a diversion cavity (102) on its side wall; the diversion cavity (102) has several diversion holes (103) on its upper part; the diversion holes (103) are located at different horizontal heights; the diversion cavity (102) has several drain outlets (104) on its lower part. The elastic telescopic unit includes a first elastic element (3) and a movable rod (4); several first elastic elements (3) are fixedly connected to the inner wall of the diversion cavity (102); each first elastic element (3) is fixedly connected to a movable rod (4); each movable rod (4) passes through the middle of a first elastic element (3), and one end of each first elastic element (3) is fixedly connected to the inner wall of the diversion cavity (102), and the other end of the first elastic element (3) is fixedly connected to the corresponding movable rod (4); all movable rods (4) pass through the diversion cavity (102), and all movable rods (4) are slidably connected to the well ring (1); all movable rods (4) are fixedly connected to the load-bearing ring (5); It also includes a protective shell (7), a movable pipe (10), and a flow-stopping ring (11); the well ring (1) is fixedly connected to several protective shells (7); the well ring (1) has a diversion groove (105); the diversion cavity (102) has several straight grooves (106) on the side away from the drain outlet (104); each straight groove (106) is connected to a protective shell (7); the well ring (1) is slidably connected to several movable pipes (10); each movable pipe (10) is located in the corresponding protective shell (7); all movable pipes (10) pass through the diversion groove (105) together, and all movable pipes (10) are fixedly connected to and connected to the flow-stopping ring (11); the flow-stopping ring (11) is located in the diversion groove (105); It also includes a second elastic element (8), a horizontal plate (9), a stop valve (12), a first magnetic element (13), and a second magnetic element (14); each protective shell (7) is fixedly connected to a second elastic element (8); each second elastic element (8) is fixedly connected to a horizontal plate (9); the horizontal plate (9) is a hollow plate, and has an opening on one side facing the middle of the well ring (1); all the horizontal plates (9) are connected to the diversion cavity (102); each horizontal plate (9) is connected to a movable tube (10); a slidable section is connected inside each horizontal plate (9). Stop valve (12); stop valve (12) is used to block the horizontal plate (9); each stop valve (12) is fixed with a first magnetic element (13); each movable rod (4) is fixed with a second magnetic element (14); each second magnetic element (14) cooperates with a first magnetic element (13); each horizontal plate (9) is provided with a limiting ring (901); each limiting ring (901) corresponds to the position of a first magnetic element (13); each second magnetic element (14) is in contact with a limiting ring (901).

2. The intelligent manhole cover for sponge cities according to claim 1, characterized in that: Several intercepting posts (202) are evenly arranged around the water inlet (201) of the manhole cover body (2).

3. The intelligent manhole cover for sponge cities according to claim 2, characterized in that: A filter screen is provided at the diversion hole (103).

4. The intelligent manhole cover for sponge cities according to claim 3, characterized in that: The upper part of the load-bearing ring (5) is provided with an inner chamfer.

5. A smart manhole cover for sponge cities according to any one of claims 2-4, characterized in that: The diameter of the first filter hole (603) is larger than the diameter of the second filter hole (604).

6. A smart manhole cover for sponge cities according to claim 1, characterized in that: The flow-blocking ring (11) has an annular groove inside.

7. A smart manhole cover for sponge cities according to claim 1, characterized in that: A metal filter screen is provided at the opening of the annular groove of the intercepting ring (11).

Citation Information

Patent Citations

  • Ecological horticulture afforestation drainage well lid

    CN207659996U

  • Filtering device of catch basin

    CN223163999U