Intelligent manhole cover

Abstract

An intelligent manhole cover, characterized in that it comprises a fixed cover plate, a movable cover plate, and a plurality of first magnets, wherein a second magnet is embedded in the movable cover plate at a position corresponding to each first magnet position, wherein the first magnet and the second magnet are both natural magnets, and the polarity of the first magnet and the second magnet are the same so that the movable cover plate is suspended above the first magnet and abuts against the lower surface of the fixed cover plate, wherein the fixed cover plate is provided with a plurality of first rainwater detection holes and a plurality of second rainwater drainage holes, wherein the movable cover plate is provided with a third rainwater detection hole corresponding to each first rainwater detection hole position on the fixed cover plate, and a fourth rainwater drainage hole interlaced with the second rainwater drainage hole, and a rainwater collector is also fixedly provided below the movable cover plate. The intelligent manhole cover can effectively prevent garbage from entering, and has a function of rapid and automatic drainage when it rains.

Description

Technical Field

[0001] The present invention relates to the technical field of manhole covers, and in particular to an intelligent manhole cover. Background Art

[0002] An existing manhole cover has a structure as follows: Figure 1 As shown, it includes a cover plate body 2a fixed on the top of the drainage well 1a, and a plurality of strip-shaped drainage holes 3a are evenly arranged on the cover plate body 2a. However, in order to drain water quickly, the existing manhole covers usually have larger drainage holes 3a, and these drainage holes 3a are directly open at any time, so it is easy for garbage to directly enter the drainage well 1a through the drainage holes 3a. The accumulation of garbage in the drainage well 1a will cause the internal drainage pipe to be blocked, thereby causing urban road waterlogging. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an intelligent manhole cover which can effectively prevent garbage from entering and has the function of rapid and automatic drainage when it rains.

[0004] The technical solution of the present invention is: an intelligent manhole cover, characterized in that it includes a fixed cover plate fixed on the top of the drainage well, and a movable cover plate arranged below the fixed cover plate and capable of moving up and down, and also includes a plurality of first magnets uniformly fixed in the drainage well along the circumferential direction and located below the edge of the movable cover plate, second magnets are embedded in the movable cover plate at positions corresponding to the positions of the first magnets, the first magnet and the second magnet are both natural magnets, and the polarity of the first magnet and the second magnet are the same so that the movable cover plate is suspended above the first magnet and abuts against the lower surface of the fixed cover plate, and a plurality of first rainwater detectors are arranged on the fixed cover plate The movable cover is provided with a third rainwater detection hole corresponding to the position of each first rainwater detection hole on the fixed cover, and a fourth rainwater drainage hole staggered with the second rainwater drainage hole. A rainwater collector is also fixedly provided under the movable cover. The top of the rainwater collector is connected with the third rainwater detection hole and the fourth rainwater drainage hole on the movable cover, and is used for making the movable cover overcome the magnetic force and descend to open the second rainwater drainage hole and the fourth rainwater drainage hole when the rainwater collector detects the set rainfall. A first filter is provided in the first rainwater detection hole and the second rainwater drainage hole.

[0005] The working principle of the present invention is as follows:

[0006] When it is not raining, the rainwater collector of the intelligent manhole cover of the present invention does not collect rainwater, and the gravity on the movable cover is less than the magnetic levitation force applied by the first magnet. Therefore, the movable cover is suspended above the first magnet and tightly pressed against the upper surface of the fixed cover. At this time, only the first rainwater detection hole and the third rainwater detection hole for detecting whether it is raining are opened. As long as the number of the first rainwater detection holes and the third rainwater detection holes is less than that of the second rainwater drainage hole and the fourth rainwater drainage hole, and / or the diameter of the first rainwater detection holes and the third rainwater detection holes is smaller than that of the second rainwater drainage hole and the fourth rainwater drainage hole, and in fact, detecting whether it is raining does not require a large number of rainwater detection holes with large diameters, then when it is not raining, This will make it possible for external garbage to enter the drainage well through very few channels and in very small quantities. In addition, a first filter is also provided in the first rainwater detection hole, making it even more difficult for garbage to enter. When it rains, the rainwater collector collects rainwater through the first rainwater detection hole and the third rainwater detection hole. When the rainfall reaches the set value, the gravity exerted on the movable cover will be greater than the magnetic levitation force exerted by the first magnet, so that the movable cover is separated from the fixed cover, and the movable cover cannot block the second rainwater drainage hole on the fixed cover, that is, the second rainwater drainage hole and the fourth rainwater drainage hole are opened, so that the drainage function can be quickly and automatically opened on rainy days. Moreover, since the first filter is provided in the second rainwater drainage hole, garbage is not easy to enter even after the drainage hole is opened on rainy days.

[0007] After adopting the above structure, the present invention has the following advantages:

[0008] When it is not raining, the movable cover plate is subjected to the upward magnetic levitation force and is offset against the fixed cover plate, leaving only the first rainwater detection hole and the third rainwater detection hole open, so as to automatically detect when it is raining. When it is raining, the movable cover plate overcomes the magnetic levitation force by the gravity increased by the rainwater collector, and separates the movable cover plate from the fixed cover plate. As long as the number of the first rainwater detection hole and the third rainwater detection hole is less than the number of the second rainwater drainage hole and the fourth rainwater drainage hole, and / or the diameter of the first rainwater detection hole and the third rainwater detection hole is relatively large, the movable cover plate can be automatically detected. The second rainwater drainage hole and the fourth rainwater drainage hole have smaller diameters, and the first rainwater detection hole and the second rainwater drainage hole are both provided with a first filter net, so that garbage can be effectively prevented from entering regardless of whether it is a rainy day or a non-rainy day. On rainy days, the drainage holes will automatically open according to the rainfall conditions, which is conducive to rapid drainage. The drainage holes are automatically closed by natural magnets and automatically opened by natural rainfall without consuming any electrical energy, which is very energy-saving and consumption-reducing. Moreover, the natural magnets do not affect the magnetism in the water, which can also make the opening and closing of the movable cover more reliable.

[0009] Preferably, the two sides of the movable cover are also movably connected to the fixed cover up and down through a guide device. This arrangement can make the movable cover move up and down more stable and reliable.

[0010] Preferably, the guide device comprises two slide rails vertically arranged below the fixed cover plate and located on the left and right sides thereof, one end of the slide rail is fixed to the fixed cover plate, and the other end is fixed to the bottom of the drainage well, and the guide device further comprises first sliders arranged on the left and right sides of the movable cover plate and matched with the slide rails. The guide device has a simple structure and can play a certain supporting role on the fixed cover plate, and can effectively prevent the fixed cover plate from falling.

[0011] Preferably, the left and right sides of the rainwater collector are also provided with second sliding blocks matched with the slide rails. This arrangement can make the rainwater collector rise and fall stably and reliably, and can be reliably positioned without being easily overturned.

[0012] As a preference, it also includes a background server, a mobile terminal of a staff member, a power module and a controller arranged inside the drainage well, a water level detection device is arranged inside the rainwater collector, a first position detection device and a second position detection device for detecting the opening and closing of the movable cover are arranged on the slide rail, the power module is electrically connected to the controller, the first position detection device, the second position detection device and the water level detection device are all electrically connected to the controller, and the controller and the mobile terminal of the staff member are both connected to the background server for communication. This setting can use the first position detection device, the second position detection device and the water level detection device to determine whether the movable cover is correctly opened or closed. Once the movable cover is found to be abnormal, the controller sends an alarm signal to the background server, and the background server sends the alarm information to the mobile terminal of the corresponding staff member to remind the staff member to check and repair in time.

[0013] Preferably, it also includes a plurality of third magnets fixed in the drainage well and located below the movable cover plate, the plurality of third magnets are evenly arranged in the circumferential direction and alternately arranged with the first magnets, the fourth magnets are embedded in the movable cover plate at positions corresponding to the positions of the third magnets, the third magnets and the fourth magnets are both electromagnets, the power module is electrically connected to the third magnet and the fourth magnet respectively through a switch module, and the switch module is electrically connected to the controller. This setting can use the first position detection device, the second position detection device, and the water level detection device to detect whether the first magnet and the second magnet are working normally. If the pair of natural magnets are not working properly, the controller controls the third magnet and the fourth magnet to be energized, so that in the case where the natural magnets are not working properly, the electromagnets can still be used to ensure the correct opening and closing of the movable cover plate.

[0014] As a preference, it further comprises an annular base fixed between the two slide rails, and the plurality of first magnets are evenly embedded on the annular base. This arrangement can facilitate the installation of the first magnets, and the overall structure is more stable and reliable.

[0015] Preferably, when the movable cover plate overcomes the magnetic force and descends so that the bottom of the rainwater collector contacts the bottom of the drainage well, the movable cover plate just abuts against the annular base. This arrangement enables the movable cover plate to be stably parked in the open position, and at the same time, it can be supported by the bottom of the drainage well, so that the pressure that the annular base needs to bear can be shared, and it is not easy to cause damage to the electromagnetic elements on the annular base.

[0016] Preferably, the fixed cover plate and the movable cover plate are both circular, the upper part of the rainwater collector is cylindrical and the lower part is truncated cone-shaped with a wide top and a narrow bottom, a second filter screen is arranged at the boundary between the upper part and the lower part of the rainwater collector, and the bottom of the rainwater collector is arranged as a drain port for draining rainwater into a drainage pipe. This arrangement can make the overall structure more compact, and the shape of the rainwater collector only needs to arrange a second filter screen at the boundary between the upper part and the lower part to separate garbage, thereby effectively preventing garbage from entering the drain port below and causing the drain port to be blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an existing manhole cover;

[0018] Figure 2 A half-section view of the intelligent manhole cover of the present invention when the movable cover is closed;

[0019] Figure 3 A half-section view of the intelligent manhole cover of the present invention when the movable cover is opened;

[0020] Figure 4 This is a schematic diagram of the structure of the intelligent manhole cover hiding the rainwater collector of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the movable cover plate of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the annular base of the present invention;

[0023] In the prior art figure: 1a-drainage well, 2a-cover plate body, 3a-drainage hole;

[0024] In the figure of the present invention: 1-drainage well, 2-fixed cover plate, 3-movable cover plate, 4-first magnet, 5-second magnet, 6-first rainwater detection hole, 7-second rainwater drainage hole, 8-third rainwater detection hole, 9-fourth rainwater drainage hole, 10-rainwater collector, 11-first filter, 12-guide device, 13-slide rail, 14-first slider, 15-backend server, 16-mobile terminal, 17-controller, 18-water level detection device, 19-first position detection device, 20-second position detection device, 22-annular base, 23-cylindrical, 24-truncated cone, 25-second filter, 26-drainage outlet, 27-drainage pipe, 28-third magnet, 29-fourth magnet, 30-second slider, 31-power module, 32-switch module. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Example:

[0027] A smart manhole cover comprises a fixed cover plate 2 fixed on the top of a drainage well 1, and a movable cover plate 3 arranged below the fixed cover plate 2, and also comprises a plurality of first magnets 4 uniformly fixed in the drainage well 1 along the circumferential direction and located below the edge of the movable cover plate 3, wherein second magnets 5 are embedded in the movable cover plate 3 at positions corresponding to the positions of the first magnets 4, wherein the first magnets 4 and the second magnets 5 are natural magnets, and the polarities of the first magnets 4 and the second magnets 5 are the same so that the movable cover plate 3 is suspended above the first magnets 4 and abuts against the lower surface of the fixed cover plate 2, wherein the fixed cover plate 2 is provided with a plurality of first rainwater detection holes 6 and a plurality of second rainwater drainage holes 7, wherein the first rainwater detection holes 6 and the second rainwater drainage holes 7 are arranged on the fixed cover plate 2, and the second rainwater drainage holes 7 are arranged on the fixed cover plate 2. The movable cover plate 3 is provided with a third rainwater detection hole 8 corresponding to the position of each first rainwater detection hole 6 on the fixed cover plate 2, and a fourth rainwater drainage hole 9 staggered with the second rainwater drainage hole 7. A rainwater collector 10 is also fixedly provided under the movable cover plate 3. The top of the rainwater collector 10 is connected to the third rainwater detection hole 8 and the fourth rainwater drainage hole 9 on the movable cover plate 3, and is used to make the movable cover plate 3 overcome the magnetic force and descend to open the second rainwater drainage hole 7 and the fourth rainwater drainage hole 9 when the rainwater collector 10 detects the set rainfall. A first filter net 11 is provided in the first rainwater detection hole 6 and the second rainwater drainage hole 7.

[0028] The working principle of the present invention is as follows:

[0029] When it is not raining, the rainwater collector 10 of the intelligent manhole cover of the present invention does not collect rainwater, and the gravity on the movable cover plate 3 is less than the magnetic levitation force applied by the first magnet 4. Therefore, the movable cover plate 3 is suspended above the first magnet 4 and tightly pressed against the upper surface of the fixed cover plate 2. At this time, only the first rainwater detection hole 6 and the third rainwater detection hole 8 for detecting whether it is raining are open. As long as the number of the first rainwater detection holes 6 and the third rainwater detection holes 8 is less than that of the second rainwater drainage hole 7 and the fourth rainwater drainage hole 9, and / or the diameter of the first rainwater detection hole 6 and the third rainwater detection hole 8 is smaller than that of the second rainwater drainage hole 7 and the fourth rainwater drainage hole 9, and in fact, detecting whether it is raining does not require a large number or large diameter of rainwater detection holes, then when it is not raining, The number of channels through which external garbage can enter the drainage well 1 is very small, and a first filter screen 11 is also provided in the first rainwater detection hole 6, which makes it even more difficult for garbage to enter. When it rains, the rainwater collector 10 collects rainwater through the first rainwater detection hole 6 and the third rainwater detection hole 8. When the rainfall reaches the set value, the gravity exerted on the movable cover plate 3 will be greater than the magnetic levitation force exerted by the first magnet 4, so that the movable cover plate 3 is separated from the fixed cover plate 2, and the movable cover plate 3 cannot block the second rainwater drainage hole 7 on the fixed cover plate 2, that is, the second rainwater drainage hole 7 and the fourth rainwater drainage hole 9 are opened, so that the drainage function can be quickly and automatically opened on rainy days, and since the first filter screen 11 is provided in the second rainwater drainage hole 7, garbage is not easy to enter even after the drainage hole is opened on rainy days.

[0030] After adopting the above structure, the present invention has the following advantages:

[0031] When it is not raining, the movable cover plate 3 of the intelligent manhole cover of the present invention is subjected to the upward magnetic levitation force and is offset against the fixed cover plate 2, leaving only the first rainwater detection hole 6 and the third rainwater detection hole 8 open, so as to automatically detect when it rains. When it rains, the movable cover plate 3 uses the gravity increased by the rainwater collector 10 to overcome the magnetic levitation force, so that the movable cover plate 3 is separated from the fixed cover plate 2. As long as the number of the first rainwater detection hole 6 and the third rainwater detection hole 8 is less than the number of the second rainwater drainage hole 7 and the fourth rainwater drainage hole 9, and / or the first rainwater detection hole 6 and the third rainwater detection hole 8 are set The caliber of the drain hole is smaller than that of the second rainwater drain hole 7 and the fourth rainwater drain hole 9. In addition, the first rainwater detection hole 6 and the second rainwater drain hole 7 are both provided with a first filter screen 11, so that garbage can be effectively prevented from entering regardless of whether it is a rainy day or a non-rainy day. On rainy days, the drain hole will automatically open according to the rainfall conditions, which is conducive to rapid drainage. The drain hole is automatically closed by natural magnets and automatically opened by natural rainfall without consuming any electrical energy, which is very energy-saving and consumption-reducing. Moreover, the natural magnet does not affect the magnetism in water, thereby making the opening and closing of the movable cover 3 more reliable.

[0032] Preferably, the two sides of the movable cover plate 3 are also movably connected with the fixed cover plate 2 up and down through the guide device 12. This arrangement can make the movable cover plate 3 move up and down more stably and reliably.

[0033] Preferably, the guide device 12 includes two slide rails 13 vertically arranged below the fixed cover plate 2 and located on the left and right sides thereof, one end of the slide rail 13 is fixed to the fixed cover plate 2, and the other end is fixed to the bottom of the drainage well 1, and the guide device 12 also includes a first slider 14 arranged on the left and right sides of the movable cover plate 3 and matched with the slide rail 13. The guide device 12 has a simple structure and can play a certain supporting role on the fixed cover plate 2, and can effectively prevent the fixed cover plate 2 from falling.

[0034] As a preference, the left and right sides of the rainwater collector 10 are also provided with second slide blocks 30 that cooperate with the slide rails 13. This arrangement enables the rainwater collector 10 to rise and fall stably and reliably, and can be reliably positioned without being easily overturned.

[0035] Preferably, it also includes a background server 15, a staff member's mobile terminal 16, a power module and a controller 17 arranged inside the drainage well 1, a water level detection device 18 is arranged in the rainwater collector 10, and a first position detection device 19 and a second position detection device 20 for detecting the opening and closing of the movable cover 3 are arranged on the slide rail 13, the power module 31 is electrically connected to the controller 17, the first position detection device 19, the second position detection device 20, and the water level detection device 18 are all electrically connected to the controller 17, the controller 17 and the staff member's mobile terminal 16 are both communicatively connected to the background server 15, the background server 15 is such as a desktop computer, a laptop computer, etc., the staff member's mobile terminal 16 is such as a mobile phone, the core component of the controller 17 is a single-chip microcomputer or a DSP, the water level detection device 18, the first position detection device 19 and the second position detection device 20 are all existing technologies. This setting can use the first position detection device 19, the second position detection device 20 and the water level detection device 18 to determine whether the movable cover 3 is correctly opened or closed. Once the movable cover 3 is found to be working abnormally, the controller 17 sends an alarm signal to the background server 15, and the background server 15 sends the alarm information to the mobile terminal 16 of the corresponding staff to remind the staff to check and repair in time.

[0036] Preferably, it also includes a plurality of third magnets 28 fixed in the drainage well 1 and located below the movable cover plate 3, the plurality of third magnets 28 are evenly arranged in the circumferential direction and alternately arranged with the first magnets 4, and fourth magnets 29 are embedded in the movable cover plate 3 at positions corresponding to the positions of the third magnets 28, the third magnets 28 and the fourth magnets 29 are both electromagnets, the power module 31 is electrically connected to the third magnet 28 and the fourth magnet 29 respectively through a switch module 32, the switch module 32 is electrically connected to the controller 17, the switch module 32 can be integrated in the controller 17, and the controller 17 and the power module 31 can be arranged in the same waterproof housing. This arrangement can utilize the first position detection device 19, the second position detection device 20, and the water level detection device 18 to detect whether the first magnet 4 and the second magnet 5 are working normally. If the pair of natural magnets are not working normally, the controller controls the third magnet 28 and the fourth magnet 29 to be energized, so that when the natural magnets are not working normally, the electromagnets can still be used to ensure the correct opening and closing of the movable cover 3. For example, after the water level detection device 18 detects that the water level exceeds the first set value, the first position detection device 19 still does not detect a signal, which means that the movable cover 3 has not been opened, which means that the first magnet 4 and the second magnet 5 are not working normally. At this time, the controller 17 controls the switch module 32 to be turned on, and uses the power module 31 to energize the third magnet 28 and the fourth magnet 29, so that the energized third magnet 28 and the fourth magnet 29 are turned on. The four magnets 29 generate attractive force, and the movable cover 3 is attracted by the third magnet 28 and descends, so that the drainage holes on the fixed cover 2 and the movable cover 3 can be opened. On the contrary, if the water level detection device 18 detects that the water level is lower than the second set value, and the second position detection device 20 still does not detect a signal, it means that the movable cover 3 has not been closed, which means that the first magnet 4 and the second magnet 5 are not working normally. At this time, the controller 17 also controls the switch module 32 to be turned on, and the power supply module 31 is used to energize the third magnet 28 and the fourth magnet 29, so that the third magnet 28 and the fourth magnet 29 after energization generate a repulsive force, and the movable cover 3 is repelled by the third magnet 28 and rises, so that the drainage holes on the fixed cover 2 and the movable cover 3 can be closed. Whether the two electromagnets generate attractive force or repulsive force can be controlled by changing the direction of the current.

[0037] Preferably, it further comprises an annular base 22 fixed between the two slide rails 13, the plurality of first magnets 4 are evenly embedded on the annular base 22, the third magnets 28 are also evenly embedded on the annular base 22, and for example, four first magnets 4 and four third magnets 28 are provided. This arrangement can facilitate the installation of the first magnets 4 and the third magnets 28, and the overall structure is more stable and reliable.

[0038] Preferably, when the movable cover 3 overcomes the magnetic force and descends to make the bottom of the rainwater collector 10 contact the bottom of the drainage well 1, the movable cover 3 just abuts against the annular base 22. This arrangement allows the movable cover 3 to be stably parked in the open position, and at this position, it can also be supported by the bottom of the drainage well 1, so that the pressure that the annular base 22 needs to bear can be shared, and it is not easy to cause damage to the electromagnetic components on the annular base 22.

[0039] Preferably, the fixed cover plate 2 and the movable cover plate 3 are both set to be circular, the upper part of the rainwater collector 10 is set to be cylindrical 23 and the lower part is set to be a truncated cone 24 that is wide at the top and narrow at the bottom, a second filter screen 25 is set at the boundary between the upper part and the lower part of the rainwater collector 10, and the bottom of the rainwater collector 10 is set to be a drain port 26 for draining rainwater into a drain pipe 27. This arrangement can make the overall structure more compact, and the shape characteristics of the rainwater collector 10 only need to set a second filter screen 25 at the boundary between the upper part and the lower part to separate garbage, thereby effectively preventing garbage from entering the drain port 26 below and causing the drain port 26 to be blocked.

Claims

1. An intelligent manhole cover, characterized in that: The invention comprises a fixed cover plate (2) fixed on the top of a drainage well (1), and a movable cover plate (3) arranged below the fixed cover plate (2) and movable up and down, and also comprises a plurality of first magnets (4) evenly fixed in the drainage well (1) along the circumferential direction and located below the edge of the movable cover plate (3); second magnets (5) are embedded in the movable cover plate (3) at positions corresponding to the positions of the first magnets (4); the first magnet (4) and the second magnet (5) are both natural magnets, and the polarities of the first magnet (4) and the second magnet (5) are the same so that the movable cover plate (3) is suspended above the first magnet (4) and abuts against the lower surface of the fixed cover plate (2); the fixed cover plate (2) is provided with a plurality of first rainwater detection holes (6) and a plurality of second rainwater drainage holes (7); the movable cover plate (3) is provided with a plurality of first rainwater detection holes (6) on the fixed cover plate (2) and a plurality of second rainwater drainage holes (7); the movable cover plate (3) is provided with a plurality of first rainwater detection holes (6) on the fixed cover plate (2) and a plurality of second rainwater drainage holes (7); the movable cover plate (3) is provided with a plurality of second ... second rainwater detection holes (6) on the fixed cover plate (2) and a plurality of second rainwater drainage holes (7); the movable cover plate (3) is provided with a plurality of second rainwater detection holes (6) on the fixed cover plate (2); the first rainwater detection holes (6) on the fixed ) corresponding to the position of the third rainwater detection hole (8), and a fourth rainwater drainage hole (9) interlaced with the second rainwater drainage hole (7); a rainwater collector (10) is fixedly arranged below the movable cover plate (3); the top of the rainwater collector (10) is connected to the third rainwater detection hole (8) and the fourth rainwater drainage hole (9) on the movable cover plate (3), and is used to make the movable cover plate (3) overcome the magnetic force and descend to open the second rainwater drainage hole (7) and the fourth rainwater drainage hole (9) when the rainwater collector (10) detects a set rainfall; a first filter net (11) is arranged in the first rainwater detection hole (6) and the second rainwater drainage hole (7); the fixed cover plate (2) and the movable cover plate (3) are both arranged in a circular shape; and the two sides of the movable cover plate (3) are also movably connected to the fixed cover plate (2) up and down through a guide device (12).

2. The intelligent manhole cover according to claim 1, characterized in that: The guide device (12) comprises two slide rails (13) vertically arranged below the fixed cover plate (2) and located on the left and right sides thereof, one end of the slide rail (13) is fixed to the fixed cover plate (2), and the other end is fixed to the bottom of the drainage well (1), and the guide device (12) further comprises a first sliding block (14) arranged on the left and right sides of the movable cover plate (3) and cooperating with the slide rail (13).

3. The intelligent manhole cover according to claim 2 is characterized in that: Second sliding blocks (30) matching with the sliding rails (13) are also provided on the left and right sides of the rainwater collector (10).

4. The intelligent manhole cover according to claim 2 is characterized in that: The invention also comprises a background server (15), a mobile terminal (16) of a staff member, a power module (31) and a controller (17) arranged inside the drainage well (1); a water level detection device (18) is arranged inside the rainwater collector (10); a first position detection device (19) and a second position detection device (20) for detecting the opening and closing of the movable cover plate (3) are arranged on the slide rail (13); the power module (31) is electrically connected to the controller (17); the first position detection device (19), the second position detection device (20) and the water level detection device (18) are all electrically connected to the controller (17); and the controller (17) and the mobile terminal (16) of the staff member are all communicatively connected to the background server (15).

5. The intelligent manhole cover according to claim 4 is characterized in that: The invention also comprises a plurality of third magnets (28) fixedly arranged in the drainage well (1) and located below the movable cover plate (3); the plurality of third magnets (28) are evenly arranged in the circumferential direction and are alternately arranged with the first magnets (4) at intervals; fourth magnets (29) are embedded in the movable cover plate (3) at positions corresponding to the positions of the third magnets (28); the third magnets (28) and the fourth magnets (29) are both electromagnets; the power supply module (31) is electrically connected to the third magnets (28) and the fourth magnets (29) respectively through a switch module (32); and the switch module (32) is electrically connected to the controller (17).

6. The intelligent manhole cover according to claim 2, characterized in that: It also comprises an annular base (22) fixed between the two slide rails (13), and the plurality of first magnets (4) are evenly embedded on the annular base (22).

7. The intelligent manhole cover according to claim 6, characterized in that: When the movable cover plate (3) overcomes the magnetic force and descends so that the bottom of the rainwater collector (10) contacts the bottom of the drainage well (1), the movable cover plate (3) just abuts against the annular base (22).

8. The intelligent manhole cover according to claim 1, characterized in that: The upper part of the rainwater collector (10) is arranged in a cylindrical shape (23) and the lower part is arranged in a truncated cone shape (24) which is wide at the top and narrow at the bottom. A second filter screen (25) is arranged inside the rainwater collector (10) at the boundary between the upper part and the lower part. The bottom of the rainwater collector (10) is arranged in a drainage port (26) for discharging rainwater into a drainage pipe (27).

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