Autonomous dredging type anti-blocking well lid

Abstract

The invention relates to the technical field of well lids, in particular to an automatic dredging type anti-blocking well lid which comprises a base, a well lid body and the like. A well cover is mounted on the base; and a plurality of water outlets are formed in the well lid. The collecting box is matched with the base in the water level rising process to block a sewer, so that sewage is prevented from overflowing from the water outlet, water accumulation on the road surface is avoided, and the function of preventing sewage from flowing backwards is achieved; a sliding plate moves downwards, so that a magnet adsorbs a metal block to be stopped on a sliding path of a sliding rod, sewage can be discharged to the outside through a water outlet, the sewage is prevented from being continuously accumulated below the well lid to cause relatively large extrusion force, and a sewer backflow phenomenon caused by heavy rainfall is prevented in advance; and the water outlet is cleaned in a reciprocating mode through cooperation of the inserting rod and the collecting box, the water outlet can be simply cleaned in a reciprocating mode without an additional active driving mode, and the self-cleaning function of the well lid is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of well covers, in particular to a self-unblocking anti-clogging well cover. BACKGROUND

[0002] The well cover is used for draining road surface water while ensuring the safety of pedestrians and vehicles on the road surface, preventing falling. During the drainage process, there are many cases of backflow, for example, impurities in sewage can gradually accumulate in the sewer, causing blockage and preventing drainage. At this time, the water in the sewer will produce a backflow phenomenon, causing sewage to overflow from the drain port of the well cover to the road surface. Or in heavy rainfall weather, the drainage capacity cannot meet the rainfall, and as the road surface continues to accumulate water, the sewer drainage pressure gradually increases, which can also cause a backflow phenomenon. Chinese patent CN112502266A, a well cover for preventing backflow during road construction and its assembly method, when sewage in the sewer backflows, the sewage flows up into the extended housing, and the accumulation tank housing is displaced upward under the buoyancy of the inner and outer buoyancy plates, so that the drainage hole is horizontal to the sealing sleeve layer or the drainage hole is located above the sealing sleeve layer, so that the sewage cannot enter from the drainage hole. However, in heavy rainfall weather, as the rainfall increases, the drainage capacity cannot keep up with the rainfall, causing the backflow of rainwater in the sewer to increase continuously. When the anti-backflow structure is used to intercept rainwater from overflowing onto the road surface, the rainwater cannot be drained to the ground, and the water pressure of the rainwater in the sewer increases continuously, which continuously exerts pressure on the underside of the well cover. This can cause the well cover to loosen under pressure, and in severe cases, the well cover can be lifted by the sewage. Vehicles are prone to collide with the lifted well cover, and once the well cover is lifted out of the sewer opening, the sewer opening is not supported, and vehicles are prone to get stuck in the sewer opening and cannot drive.

[0003] At the same time, the drain port on the well cover is prone to blockage due to the accumulation of impurities on the inner wall of the drain port during long-term use, which affects the drainage capacity.

[0004] In view of the above, the present application provides a self-unblocking anti-clogging well cover to improve the above technical problems. SUMMARY

[0005] In order to overcome the shortcomings of the well cover being easily lifted by continuous pressure during heavy rainfall, vehicles being prone to collide with the well cover, and vehicles being prone to get stuck in the sewer opening and unable to drive, and the drain port on the well cover being prone to blockage during long-term use, the present application provides a self-unblocking anti-clogging well cover.

[0006] Technical solution: An autonomous dredging type anti-blocking manhole cover, comprising a base and a manhole cover; the base is provided with a manhole cover; the manhole cover is provided with a plurality of drainage openings; it also comprises a sliding plate, a collection box, a metal block and an extension rod; the manhole cover is slidably connected with the sliding plate, and at least three spiral springs are connected between the sliding plate and the manhole cover; the lower side of the sliding plate is fixedly connected with a magnet, which is arranged in an I shape; the manhole cover is slidably connected with a sliding rod, and the sliding rod is opposite to the magnet; the lower side of the manhole cover is fixedly connected with a plurality of extension rods; the extension ends of the plurality of extension rods are fixedly connected with a collection box, and the collection box has a density less than water; the lower side of the sliding rod is in contact with the collection box; a plurality of metal blocks are slidably connected in the manhole cover through springs, and the metal blocks are equal in size to the gaps of the magnet.

[0007] More preferably, the above-mentioned autonomous dredging type anti-blocking manhole cover further comprises a nylon net; the manhole cover and the collection box are detachably connected with the nylon net which prevents impurities from being directly discharged into the sewer, and the nylon net is arranged in a ring shape.

[0008] More preferably, the above-mentioned autonomous dredging type anti-blocking manhole cover further comprises a baffle, a metal mesh plate, a bearing block, a plug rod and a sliding column; the extension rod is a spring extension rod; the collection box is slidably connected with a metal mesh plate; the lower side of the base is fixedly connected with a plurality of bearing blocks; the upper side of the collection box is fixedly connected with a plurality of plug rods for cleaning the drainage openings, the plug rods are opposite to the corresponding drainage openings, and the diameter of the plug rod is less than the diameter of the drainage opening; the collection box is slidably connected with a plurality of sliding columns; a plurality of rectangular grooves are arranged on each sliding column; a baffle is fixedly connected to each sliding column, and the diameter of the baffle is greater than the diameter of the sliding column, the baffle being located between the collection box and the metal mesh plate.

[0009] More preferably, the above-mentioned autonomous dredging type anti-blocking manhole cover further comprises a plastic plate; a support frame is arranged on the base; a plurality of plastic plates are fixedly connected to the base; the other end of each plastic plate abuts against the adjacent support frame, and the support frame is used to limit the downward opening of the plastic plate; a plurality of communication grooves are formed in the base, and the communication grooves cooperate with the plastic plates to relieve the drainage pressure of the drainage openings.

[0010] More preferably, the upper surface of the sliding plate is lower than the upper surface of the manhole cover.

[0011] More preferably, the upper side of each plug rod is arranged in a forked shape.

[0012] More preferably, the metal mesh plate is made of high-strength metal material.

[0013] More preferably, the magnet does not contact the manhole cover.

[0014] More preferably, the above-mentioned autonomous dredging type anti-blocking manhole cover further comprises a tapered block; the upper side of the collection box is fixedly connected with a tapered block corresponding in number and position to the holes of the metal mesh plate.

[0015] More preferably, the height of the tapered block is equal to the thickness of the metal mesh plate.

[0016] The beneficial effects of the present application are: 1、The present application realizes the sealing of the sewer by the cooperation of the collecting box and the base during the rising of the water level, thereby intercepting the overflow of sewage from the drain outlet, avoiding the road waterlogging, and realizing the function of sewage anti-backflow.

[0017] 2、By moving the slide plate downward, the magnet adsorbs the metal block to block the sliding path of the slide rod, so that the sewage can be discharged to the outside through the drain outlet, avoiding the continuous accumulation of sewage under the well cover to cause a large extrusion force, and the phenomenon of sewer backflow caused by heavy rain is prevented in advance.

[0018] 3、The drain outlet is reciprocally cleaned by the cooperation of the inserting rod and the collecting box, so that the drain outlet can be simply and reciprocally cleaned without additional active driving mode, and the self-cleaning function of the well cover is realized.

[0019] 4、The holes on the metal mesh plate are dredged by the taper block to prevent impurities from blocking the metal mesh plate, and the self-adaptive ability of the well cover is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the self-tunneling type anti-blocking well cover of the present application; Figure 2 It is a sectional view of the base and the well cover of the present application; Figure 3 It is an exploded view of the base and the well cover of the present application; Figure 4 It is a three-dimensional structure schematic diagram of the well cover and the slide plate combination of the present application; Figure 5 It is a sectional view of the collecting box and the metal mesh plate combination of the present application, wherein the metal mesh plate is lifted by the slide column; Figure 6 It is a three-dimensional structure schematic diagram of the taper block of the present application; Figure 7 It is a structure state schematic diagram when the lower side of the collecting box is flush with the lower side of the base.

[0021] In the figure, 1 is the base, 1001 is the support frame, 1002 is the communication groove, 2 is the well cover, 2001 is the drain outlet, 2002 is the slide rod, 3 is the slide plate, 3001 is the magnet, 4 is the collecting box, 5 is the metal block, 6 is the nylon mesh, 101 is the plastic plate, 102 is the baffle, 103 is the metal mesh plate, 104 is the bearing block, 105 is the inserting rod, 106 is the slide column, 10601 is the rectangular groove, 107 is the telescopic rod, 201 is the taper block, and 311 is the spiral spring. DETAILED DESCRIPTION

[0022] The present application will be further described below in combination with the drawings and specific embodiments.

[0023] Embodiment 1 As Figures 1-5 shown, an autonomous dredging type anti-blocking manhole cover, comprising a base 1 and a manhole cover 2; the base 1 is provided with the manhole cover 2; the manhole cover 2 is provided with a plurality of drainage openings 2001; It also includes a sliding plate 3, a collection box 4, a metal block 5 and an extension rod 107; the manhole cover 2 is slidably connected with the sliding plate 3, and the sliding plate 3 and the manhole cover 2 are jointly connected with three spiral springs 311; the lower side of the sliding plate 3 is fixedly connected with a magnet 3001, which is arranged in an I-shaped manner; the manhole cover 2 is slidably connected with a sliding rod 2002, and the sliding rod 2002 is opposite to the magnet 3001; the lower side of the manhole cover 2 is fixedly connected with a plurality of extension rods 107; the extension ends of the plurality of extension rods 107 are jointly fixedly connected with the collection box 4, and the collection box 4 has a smaller density than water; the lower side of the sliding rod 2002 is in contact with the collection box 4; two metal blocks 5 are slidably connected in the manhole cover 2 through springs, and the metal blocks 5 are equal in size to the notches of the magnet 3001.

[0024] It also includes a nylon net 6; the manhole cover 2 and the collection box 4 are jointly detachably connected with the nylon net 6, and the nylon net 6 is arranged in an annular manner.

[0025] It also includes a baffle 102, a metal mesh plate 103, a bearing block 104, a plug rod 105 and a sliding column 106; the extension rod 107 is arranged as a spring extension rod; the collection box 4 is slidably connected with the metal mesh plate 103; the lower side of the base 1 is fixedly connected with a plurality of bearing blocks 104; the upper side of the collection box 4 is fixedly connected with a plurality of plug rods 105, and the plug rods 105 are opposite to the corresponding drainage openings 2001, and the diameters of the plug rods 105 are smaller than the diameters of the drainage openings 2001; the collection box 4 is slidably connected with a plurality of sliding columns 106; each sliding column 106 is provided with a plurality of rectangular grooves 10601; each sliding column 106 is fixedly connected with a baffle 102, and the diameter of the baffle 102 is greater than the diameter of the sliding column 106, and the baffle 102 is located between the collection box 4 and the metal mesh plate 103.

[0026] It also includes a plastic plate 101; the base 1 is provided with a support frame 1001; the base 1 is fixedly connected with a plurality of plastic plates 101; the other end of each plastic plate 101 abuts against the adjacent support frame 1001, and the support frame 1001 is used to limit the downward opening of the plastic plate 101; a plurality of communication grooves 1002 are formed in the base 1, and the communication grooves 1002 cooperate with the plastic plates 101 to relieve the drainage pressure of the drainage openings 2001.

[0027] The upper surface of the sliding plate 3 is lower than the upper surface of the manhole cover 2, so as to avoid the sliding plate 3 from being easily damaged due to the extrusion of vehicles.

[0028] The upper side of each plug rod 105 is arranged in a forked manner, so as to ensure the dredging of the drainage openings 2001 and avoid the plug rods 105 from blocking the drainage openings 2001 and affecting the normal drainage.

[0029] The metal mesh plate 103 is made of high-strength metal material to ensure its service life.

[0030] Magnet 3001 does not contact manhole cover 2, thus avoiding frictional resistance when sliding plate 3 descends, making it difficult to descend.

[0031] The base 1 is formed by workers through cement casting, and the manhole cover 2 is placed on the base 1. It is noted that the collection box 4 is located in the sewer opening, and there is a gap between the collection box 4 and the side wall of the sewer opening. The collection box 4 is made of foam material. During normal use, rainwater from the road surface is discharged into the collection box 4 through the drain outlet 2001. After the collection box 4 is full of rainwater, the rainwater is discharged into the sewer through the gap between the collection box 4 and the side wall of the sewer.

[0032] Considering that sewers are easily clogged by impurities during long-term drainage, leading to reduced or even failed drainage function, and that during rainy weather, the water level in the sewers rises continuously, causing sewage to overflow onto the road surface through drain outlet 2001, resulting in road flooding; therefore, to prevent backflow of rainwater from the sewers, as the water level in the sewers rises, the collection box 4, being less dense than water, rises synchronously with the rising water level, compressing the telescopic rod 107. Simultaneously, the collection box 4 pushes the sliding rod 2002 upwards. When the lower side of the collection box 4 is flush with the lower side of the base 1, the collection box 4 and the base 1 work together to seal the sewer opening, preventing sewage from overflowing from drain outlet 2001 and causing road flooding, thus achieving the function of preventing sewage backflow; when the water level in the sewers drops, the collection box 4 drops synchronously, and the road flooding flows normally along drain outlet 2001 to the collection box 4, and then into the sewers.

[0033] In view of the fact that, in order to ensure the structural strength of the well lid 2, the drain port 2001 cannot be too large or too many, when facing a heavy rainfall environment, the small-diameter drain port 2001 cannot meet the drainage capacity, leading to serious road waterlogging. At the same time, as the heavy rainfall continues, the drainage capacity of the sewer cannot meet the drainage, causing the water level in the sewer to continuously rise. In order to avoid the phenomenon of backflow, the drain port 2001 is blocked by the collecting box 4 cooperating with the base 1 at this time, therefore, the water pressure borne by the collecting box 4 will be transmitted to the well lid 2 through the telescopic rod 107, causing the well lid 2 to be easily lifted by the sewage, and vehicles are easy to collide with the lifted well lid 2. As the water pressure continues to increase, after the well lid 2 is lifted and separated from the sewer port, the sewer port has no support, and vehicles are also easy to get stuck in the sewer port position and cannot drive;Therefore, when facing heavy rainfall, the drainage capacity of the drainage port 2001 cannot meet the rainfall, and as the road surface water continuously increases, the water pressure on the slide plate 3 also increases, and the slide plate 3 gradually moves down under the action of the water pressure, driving the magnet 3001 to move downward, and the spiral spring 311 between the slide plate 3 and the manhole cover 2 is compressed. When the magnet 3001 approaches the metal block 5, the metal block 5 is attracted to the surface of the magnet 3001 under the attraction of the magnet 3001, and the spring between the metal block 5 and the manhole cover 2 is stretched. It should be noted that part of the metal block 5 is blocked in the sliding path of the slide rod 2002, and part of the metal block 5 is still embedded in the manhole cover 2. As the heavy rainfall continues, the drainage capacity of the sewer cannot meet the rainfall, and the water level in the sewer continuously rises and drives the collection box 4 to move upward. Due to the fact that the metal block 5 is attracted out by the magnet 3001 and blocks the sliding path of the slide rod 2002, the slide rod 2002 cannot move upward under the blockage of the metal block 5, that is, the collection box 4 cannot cooperate with the base 1 to block the sewer. As the water level continuously rises, the sewage in the sewer can flow to the drainage port 2001 through the gap between the collection box 4 and the base 1 and be discharged to the outside. Here, considering that the drainage port 2001 is small, the sewage cannot be quickly discharged to the outside, so the communication groove 1002 is provided. The sewage not only flows to the drainage port 2001, but also flows to the communication groove 1002. Since the plastic plate 101 cannot be opened downward under the limitation of the support frame 1001, when the sewage enters the communication groove 1002, the sewage pushes open the plastic plate 101 as the sewage continuously rises, that is, the sewage is discharged to the road surface, and the base 1 and the manhole cover 2 are drained and depressurized. Through the cooperation of the communication groove 1002 and the drainage port 2001, the water pressure on the base 1 and the manhole cover 2 is reduced, avoiding the continuous accumulation of sewage under the manhole cover 2 causing a large extrusion force. At the same time, by actively discharging the sewage, the manhole cover 2 can also be prevented from being pushed open, thereby providing protection against the sewer backflow phenomenon caused by heavy rainfall in advance, improving the adaptability of the manhole cover 2. When the sewer has drainage capacity, the road surface water is discharged to the sewer along the drainage port 2001, and the amount of water on the manhole cover 2 gradually decreases. At this time, the water cannot extrude the slide plate 3 to move downward, and the slide plate 3 is driven upward by the spiral spring 311, thereby separating the magnet 3001 from the metal block 5. The metal block 5 loses the attraction of the magnet 3001 and is completely embedded in the manhole cover 2 by the spring.

[0034] Considering that when rainwater flows into the sewer through drain 2001, road debris also flows into the sewer along with the rainwater, and the sewer is prone to blockage due to the debris, it is extremely inconvenient for workers to enter the sewer for cleaning. Therefore, by installing nylon netting 6 on collection box 4, when water carrying impurities enters from drain 2001 and falls into collection box 4, nylon netting 6 is used to intercept the debris, preventing it from flowing directly into the sewer with the rainwater. When too much debris accumulates on collection box 4, workers only need to lift manhole cover 2 to raise it. Manhole cover 2 will lift telescopic rod 107 and collection box 4 together, and then the nylon netting 6 can be removed for simple cleaning. In this way, the nylon netting 6 prevents the sewer from becoming blocked in a short time, eliminating the need for workers to frequently enter the depths of the sewer for cleaning.

[0035] When using the drain outlet 2001 to guide and discharge road surface water, the drain outlet 2001 is easily clogged by garbage. Therefore, as the collection box 4 continuously collects road surface water, the amount of rainwater increases, causing the collection box 4 to gradually become heavier, stretching the telescopic rod 107 downwards until the collection box 4 is in contact with the upper side of the support block 104. At this time, the sliding column 106, under the restriction of the support block 104, moves as... Figure 3 As shown, the metal mesh plate 103, which was originally attached to the bottom surface of the collection box 4, is lifted upwards. At this time, the rainwater accumulated on the collection box 4 flows through the metal mesh plate 103 into the cavity between the metal mesh plate 103 and the collection box 4, and finally flows down the drain along the rectangular groove 10601. As the water on the collection box 4 is gradually drained, since the telescopic rod 107 is set as a spring telescopic rod, the collection box 4 cannot continue to stretch the telescopic rod 107 by its own weight, and thus the telescopic rod 107 springs back to its original position. The action causes the collection box 4 to move upward, allowing the insertion rod 105 to extend into the drain outlet 2001. The insertion rod 105 then pokes and pushes out the impurities blocking the drain outlet 2001, thereby achieving self-cleaning of the drain outlet 2001 and ensuring that rainwater can pass through the drain outlet 2001 and flow into the sewer normally. It should be noted that the insertion rod 105 is initially located in the drain outlet 2001, and there is a gap between the insertion rod 105 and the drain outlet 2001, which will not affect the passage of rainwater through the drain outlet 2001.

[0036] Further, in the process of moving the collection box 4, the slide rod 2002 contacts the upper side of the metal mesh plate 103, thereby pushing the metal mesh plate 103 and the slide column 106 to move downward to reset, so that the baffle 102 is attached to the collection box 4, and the collection box 4 is sealed. When the accumulated water flows from the drain 2001 to the collection box 4, the collection box 4 re-contains the accumulated water, so that the weight of the collection box 4 is continuously increased, thereby stretching the telescopic rod 107 downward again, until the slide column 106 contacts the bearing block 104 and is lifted up. In this way, the drain 2001 is repeatedly cleaned without additional active driving, and the self-cleaning function of the well lid 2 is realized. The presence of the metal mesh plate 103 allows the accumulated water to flow through the metal mesh plate 103 to the cavity between the metal mesh plate 103 and the collection box 4, and finally the rainwater is discharged from the rectangular groove 10601, but the impurities are difficult to pass through the metal mesh plate 103. When the accumulated water contained in the collection box 4 is discharged, the probability of impurities flowing into the sewer is reduced.

[0037] Embodiment 2 Based on the embodiment 1, as shown in the figure, a tapered block 201 is further included; the upper side of the collection box 4 is fixedly connected with the tapered block 201 corresponding to the number and position of the holes in the metal mesh plate 103. Figure 6

[0038] The height of the tapered block 201 is equal to the thickness of the metal mesh plate 103.

[0039] In the process of using the metal mesh plate 103 to contain impurities, considering that the continuous accumulation of impurities will block the metal mesh plate 103, therefore, by setting the tapered block 201 on the collection box 4, when the slide rod 2002 pushes the metal mesh plate 103 close to the collection box 4, the tapered block 201 passes through each hole in the metal mesh plate 103, dredges the metal mesh plate 103, so that the impurities accumulated on the metal mesh plate 103 are not easy to block the holes, thereby ensuring the normal water permeability of the metal mesh plate 103. Further, since the height of the tapered block 201 is equal to the thickness of the metal mesh plate 103, when the worker needs to disassemble and maintain the metal mesh plate 103 later, the tapered block 201 can be accommodated between the metal mesh plate 103 and the collection box 4, avoiding the tapered block 201 protruding from the metal mesh plate 103 and injuring the worker.

[0040] Although the present disclosure has been shown and described with respect to certain exemplary embodiments thereof, it should be understood by those skilled in the art that various changes in form and detail can be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined by the appended claims alone, and should be defined by the equivalents of the appended claims.​

Claims

1. An autonomous unblocking anti-blocking well lid, comprising a base (1) and a well lid (2); the well lid (2) is installed on the base (1); a plurality of drainage openings (2001) are arranged on the well lid (2); characterized in that, The utility model also includes a sliding plate (3), a collection box (4), a metal block (5) and a telescopic rod (107); the well lid (2) is slidably connected with the sliding plate (3), and at least three spiral springs (311) are jointly connected between the sliding plate (3) and the well lid (2); the lower side of the sliding plate (3) is fixedly connected with a magnet (3001), and the magnet (3001) is arranged in an I shape; the well lid (2) is slidably connected with a sliding rod (2002), and the sliding rod (2002) is opposite to the magnet (3001); the lower side of the well lid (2) is fixedly connected with a plurality of telescopic rods (107); the telescopic ends of the plurality of telescopic rods (107) are fixedly connected with the collection box (4), and the collection box (4) has a density less than water; the lower side of the sliding rod (2002) is in contact with the collection box (4); a plurality of metal blocks (5) are slidably connected in the well lid (2) through springs, and the metal blocks (5) are equal in size to the gaps of the magnet (3001).

2. The self-cleaning anti-clogging manhole cover according to claim 1, wherein, The utility model also includes a nylon net (6); the well lid (2) and the collection box (4) are detachably connected with the nylon net (6) for preventing impurities from being directly discharged into the sewer, and the nylon net (6) is arranged in a ring shape.

3. The self-cleaning, anti-clogging, and autonomous manhole cover according to claim 1, wherein, The utility model also includes a baffle (102), a metal mesh plate (103), a bearing block (104), a plug rod (105) and a sliding column (106); the telescopic rod (107) is a spring telescopic rod; the collection box (4) is slidably connected with the metal mesh plate (103); the lower side of the base (1) is fixedly connected with a plurality of bearing blocks (104); the upper side of the collection box (4) is fixedly connected with a plurality of plug rods (105) for cleaning the drainage openings (2001), the plug rods (105) are opposite to the corresponding drainage openings (2001), the diameters of the plug rods (105) are less than the diameters of the drainage openings (2001); the collection box (4) is slidably connected with a plurality of sliding columns (106); each sliding column (106) is provided with a plurality of rectangular grooves (10601); each sliding column (106) is fixedly connected with a baffle (102), the diameter of the baffle (102) is greater than the diameter of the sliding column (106), and the baffle (102) is located between the collection box (4) and the metal mesh plate (103).

4. The self-cleaning, anti-clogging, and autonomous manhole cover according to claim 3, wherein, The utility model also includes a plastic plate (101); the base (1) is provided with a support frame (1001); the base (1) is fixedly connected with a plurality of plastic plates (101); the other end of each plastic plate (101) abuts against an adjacent support frame (1001), and the support frame (1001) is used for limiting the plastic plate (101) to be opened downward; a plurality of communication grooves (1002) are formed in the base (1), and the communication grooves (1002) cooperate with the plastic plates (101) to relieve the drainage pressure of the drainage openings (2001).

5. The self-cleaning, anti-clogging access cover of claim 1, wherein, The upper surface of the sliding plate (3) is lower than the upper surface of the well lid (2).

6. The self-cleaning, anti-clogging, and autonomous manhole cover according to claim 3, wherein, The upper side of each plug rod (105) is arranged in a forked shape.

7. The self-cleaning, anti-clogging, and autonomous manhole cover according to claim 3, wherein, The metal mesh plate (103) is made of high-strength metal material.

8. The self-cleaning, anti-clogging access cover of claim 1, wherein, The magnet (3001) is not in contact with the well lid (2).

9. The self-cleaning, anti-clogging access cover of claim 7, wherein, The utility model also includes a taper block (201); the upper side of the collection box (4) is fixedly connected with a taper block (201) corresponding in number and position to the holes in the metal mesh plate (103).

10. The self-cleaning, anti-clogging access cover of claim 9, wherein, The height of the taper block (201) is equal to the thickness of the metal mesh plate (103).

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