Well lid for preventing illegal discharge of pollutants

Abstract

The utility model discloses a kind of well lid for preventing secretly setting up hidden pipe and stealing pollutant, including upper well lid, the lower well lid is set in upper well lid bottom, signal transmitting assembly is set on lower well lid, the fence that lower well lid bottom is set in well wall, fence top is connected with lower well lid bottom by multiple elastic components, the bottom of each elastic component is connected with lap block, lap block corresponding position is equipped with travel switch, travel switch is electrically connected with signal transmitting assembly, when secretly setting up hidden pipe, fence drives lap block to move in the direction of moving away from upper well lid, lap block lap travel switch triggers signal transmitting assembly to emit alarm signal. When the pipeline inspection personnel is along line investigation, in the case without opening well lid, the inspection well of being secretly connected hidden pipe can be quickly distinguished, improve the work efficiency of inspection personnel and ensure the safety of inspection personnel.

Description

Technical Field

[0001] This utility model relates to the field of manhole cover technology, specifically a manhole cover that prevents the unauthorized discharge of pollutants through hidden pipes. Background Technology

[0002] Installing unauthorized pipes is the act of illegally discharging pollutants into existing or newly built drainage inspection wells, which is a very serious environmental violation.

[0003] In related technologies, checking whether drainage manholes and other pipelines have unauthorized hidden pipes requires pipeline inspectors to open each manhole cover one by one for observation and to make a human judgment on whether there is any unauthorized discharge of pollutants. This makes the inspection work very inefficient and poses a safety hazard. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a manhole cover that prevents the illegal discharge of pollutants through unauthorized underground pipes. When pipeline inspectors are conducting inspections along the pipeline, they can quickly identify inspection wells with illegally connected underground pipes without opening the manhole cover, thereby improving the work efficiency of the inspectors and ensuring their safety.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes includes an upper manhole cover, a lower manhole cover at the bottom of the upper manhole cover, a signal transmitting component on the lower manhole cover, and a fence attached to the manhole wall at the bottom of the lower manhole cover. The top of the fence is connected to the bottom of the lower manhole cover via multiple elastic components. Each elastic component has an overlap block at its bottom, and a limit switch is installed at a corresponding position on the overlap block. The limit switch is electrically connected to the signal transmitting component. When a concealed pipe is installed, the fence moves the overlap block away from the upper manhole cover, and the overlap block engages with the limit switch, triggering the signal transmitting component to emit an alarm signal.

[0006] In some embodiments, the system further includes a plurality of support rods connected to the bottom of the lower manhole cover. The support rods are disposed within the enclosure, and a plurality of limiting grooves are provided on the outer side of the support rods. The enclosure is a hollow cylindrical structure with openings at the top and bottom, and a plurality of support rings are provided on the enclosure. The support rings are engaged in the limiting grooves.

[0007] In some embodiments, the limiting groove includes a first limiting groove, a second limiting groove, and a third limiting groove arranged at equal intervals. A first support ring, a second support ring, and a third support ring are arranged on the fence at positions corresponding to the limiting grooves. The first limiting groove is disposed at the top of the support rod. The elastic component and the overlapping block are disposed within the first limiting groove. The limit switch is disposed at the top of the support rod. The contact of the limit switch is close to the overlapping block. The height of the limiting groove is slightly greater than the distance that the overlapping block moves vertically downward until it contacts the contact of the limit switch.

[0008] In some embodiments, the lower manhole cover has a bottom disc-shaped structure with an annular protrusion at the top. The signal transmitting component is disposed inside the annular protrusion of the lower manhole cover. A cover plate is disposed on the upper part of the signal transmitting component. A cover plate slot is disposed on the edge of the annular protrusion of the lower manhole cover. The cover plate is engaged in the cover plate slot. A plurality of through holes are provided on the lower manhole cover.

[0009] In some embodiments, the fence is made of PVC mesh, the support rod is made of fiberglass square tubing, the limit switch is a waterproof limit switch, and the elastic component is a stainless steel spring.

[0010] In some embodiments, the signal transmitting assembly includes a battery box and a signal transmitter.

[0011] In some embodiments, a signal receiver is also included for receiving alarm signals emitted by the signal transmitting component.

[0012] In some embodiments, a plurality of U-shaped clamps are also included for fixing the support rod to the well wall.

[0013] In some embodiments, the travel distance of the limit switch is 3 mm.

[0014] In some embodiments, the lap block is an aluminum alloy pyramid.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a fence on the well wall and cooperating with a signal transmitting component and a limit switch, when there is a privately installed hidden pipe on the well wall, the fence drives the overlapping block to move vertically towards the contact of the limit switch. After triggering the limit switch, the signal transmitting component emits an alarm signal. When pipeline inspectors pass by the well cover with a handheld signal receiver, they can receive the alarm signal. Thus, it is possible to quickly identify whether there is a privately installed hidden pipe in the inspected well without opening the well cover, which improves the work efficiency of the inspectors and ensures their safety.

[0016] Furthermore, compared to existing manhole cover monitoring equipment on the market, it has a lower cost because it uses inexpensive wireless transmission equipment, requiring no network support and eliminating the need for real-time network signal transmission, thus saving power and simplifying maintenance. In addition, the structure uses physical transmission, which is both reliable and cost-effective, and all materials are readily available and inexpensive. It is highly durable, requiring no power supply under normal circumstances, and the battery can last for 2-3 years without replacement, resulting in low maintenance costs. It is easy for managers to operate, with a simple structure for convenient installation, and the equipment is assembled as a complete set. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the external effect of the manhole cover installed inside the manhole in an embodiment of the present invention; Figure 2 This diagram shows a schematic representation of the overall external three-dimensional structure of the manhole cover in an embodiment of the present invention. Figure 3 This is a three-dimensional structural diagram showing the position of the signal transmitting component and the cover plate in an embodiment of the present invention; Figure 4 This diagram shows a three-dimensional structure of the lower manhole cover in an embodiment of the present invention. Figure 5 This shows a sectional view at point A of the top view of the manhole cover in an embodiment of this utility model; Figure 6 This invention illustrates an embodiment of the present invention. Figure 5 A magnified structural diagram at point B; Figure 7 This invention illustrates an embodiment of the present invention. Figure 2 A schematic diagram of the 3D structure behind the hidden fence; In the diagram: 100, upper manhole cover; 200, lower manhole cover; 210, cover plate; 220, cover plate slot; 230, through hole; 300, signal transmitting assembly; 310, battery box; 320, signal transmitter; 330, limit switch; 400, fence; 410, support ring; 411, first support ring; 412, second support ring; 413, third support ring; 500, elastic component; 510, overlapping block; 600, support rod; 610, limiting groove; 611, first limiting groove; 612, second limiting groove; 613, third limiting groove; 620, U-shaped clamp; 700, signal receiver. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-7 This application provides a manhole cover to prevent the illegal discharge of pollutants through hidden pipes, including an upper manhole cover 100. The material of the upper manhole cover 100 is not limited in this application. For example, the upper manhole cover 100 is made of cast iron or concrete.

[0020] The upper manhole cover 100 has a lower manhole cover 200 at its bottom. It should be noted that the upper manhole cover 100 can be placed on a pre-reserved groove, manhole ring, or support on the ground, and its bottom does not contact the lower manhole cover 200. Alternatively, the upper manhole cover 100 can be placed directly on the lower manhole cover 200 and in direct contact with the upper side of the lower manhole cover 200. The weight can be borne by the other parts of the manhole cover that connect to the manhole wall.

[0021] In some embodiments, the manhole cover 200 has a disc-shaped bottom and an annular protrusion at the top. The manhole cover 200 can be made of fiberglass. Multiple through holes 230 are provided on the manhole cover 200. The through holes 230 allow rainwater and other pollutants to pass through the manhole cover into the rainwater well.

[0022] A signal transmitting component 300 is installed on the lower manhole cover 200.

[0023] In some embodiments, the signal transmitting component 300 is disposed inside the annular protrusion of the lower manhole cover 200, and a cover plate 210 is disposed on the upper part of the signal transmitting component 300. A cover plate groove 220 is disposed on the edge of the annular protrusion of the lower manhole cover 200, and the cover plate 210 is engaged in the cover plate groove 220. The lower manhole cover 200 is made of fiberglass.

[0024] In some embodiments, the signal transmitting assembly 300 includes a battery box 310 and a signal transmitter 320, which are electrically connected. It should be noted that both the battery box 310 and the signal transmitter 320 have waterproof and dustproof covers, and the battery box 310 contains shock-absorbing cotton, enabling it to maintain good working condition in humid environments and when vehicles pass by.

[0025] The bottom of the lower manhole cover 200 is provided with a fence 400 that fits against the manhole wall. The top of the fence 400 is connected to the bottom of the lower manhole cover 200 through multiple elastic components 500. Each elastic component 500 is connected to an overlapping block 510 at its bottom. A limit switch 330 is provided at the corresponding position of the overlapping block 510. The limit switch 330 is electrically connected to the battery box 310 in the signal transmitting component 300. When a hidden pipe is installed, the fence 400 drives the overlapping block 510 to move away from the upper manhole cover 100. The overlapping block 510 engages with the limit switch 330, triggering the signal transmitting component 300 to emit an alarm signal.

[0026] In some embodiments, the lap block 510 is an aluminum alloy pyramid.

[0027] In some embodiments, the fence 400 is made of PVC mesh fabric and is a hollow cylindrical structure with openings at the top and bottom. Multiple support rings 410 are provided on the fence 400.

[0028] It should be noted that this application does not restrict how the support ring 410 and the fence 400 are connected, as long as the support ring 410 and the fence 400 can be firmly connected together. For example, the support ring 410 can be wrapped with double-layer PVC mesh material, or multiple cable ties can be used to fix the support ring 410 and the fence 400.

[0029] In some embodiments, the elastic component 500 is a stainless steel spring, the limit switch 330 is a waterproof limit switch, and the switching stroke of the limit switch 330 is 3mm.

[0030] In other words, the fence 400 is formed by connecting the ends of a single piece of PVC mesh fabric. The height of the PVC mesh fabric can be cut according to the height of the well wall or the well shaft. The support ring 410 serves two purposes: firstly, it supports the fence 400, and secondly, it is connected to the lower well cover 200 via the elastic component 500.

[0031] It should be noted that the fence 400 is a well wall sensing mechanism. When a privately connected pipe breaks through the well wall and enters the well cylinder, the fence 400 will deform into the well. After the fence 400 deforms, it will drive the support ring 410, which in turn will drive the elastic component 500 to move away from the upper well cover 100. This will cause the overlapping block 510 to open the limit switch 330 and trigger the signal transmitting component 300.

[0032] In some embodiments, the manhole cover 100 further includes a plurality of support rods 600 connected to the bottom of the lower manhole cover 200, the support rods 600 being disposed within the enclosure 400.

[0033] In some embodiments, a plurality of U-shaped clamps 620 are also included for fixing the support rod 600 to the well wall.

[0034] In some embodiments, the support rod 600 is a fiberglass square tube. The length of the support rod 600 needs to be set according to the length of the well shaft. Generally, unauthorized underground pipes are drilled underwater in the rainwater well shaft. Therefore, the length of the support rod 600 needs to extend into the well to the bottom. The function of the support rod 600 is twofold: firstly, to fix it to the well wall, so that there is no relative displacement between the entire well cover structure and the well wall; secondly, to keep the fence 400 close to the well wall within certain limits. The distance between the outer side of the support rod 600 and the well wall is slightly greater than the thickness of the fence 400, ensuring that when the fence 400 deforms, the fence 400 can drive the spring component 500 to move away from the upper well cover 100.

[0035] In addition, the fence 400 is slightly shorter than the support rod 600, which can detect the possibility of unauthorized underground pipe connections in various locations inside the well.

[0036] In some embodiments, a plurality of limiting grooves 610 are provided on the outer side of the support rod 600; the support ring 410 is engaged in the limiting grooves 610. The function of the limiting grooves 610 is to limit the position of the fence 400. Since the limit switch is a miniature limit switch, the fence 400 only needs to move a small distance towards the bottom of the well to open the limit switch. The limiting grooves 610 can prevent the fence 400 from being stretched too much, which would cause damage to the elastic component 500.

[0037] In some embodiments, the limiting groove 610 includes a first limiting groove 611, a second limiting groove 612, and a third limiting groove 613 that are equidistantly arranged. A first support ring 411, a second support ring 412, and a third support ring 413 are arranged on the fence 400 at positions corresponding to the limiting groove 610. The first limiting groove 411 is disposed at the top of the support rod 600. An elastic member 500 and an overlapping block 510 are disposed within the first limiting groove 611. A limit switch 330 is disposed at the top of the support rod 600. The contact of the limit switch 330 is close to the overlapping block 510. The height of the limiting groove 610 is slightly greater than the distance that the overlapping block 510 moves vertically downward until it contacts the contact of the limit switch 330.

[0038] In other words, the overlapping block 510 moves towards the bottom of the well due to the movement of the fence 400. Within the vertical height of the limit groove 610, it can contact the contact of the limit switch 330, and the limit switch can be turned on after contact.

[0039] In some embodiments, a signal receiver 700 is also included for receiving alarm signals transmitted by the signal transmitting component 300. The signal receiver 700 can be a detection remote control, which can turn different indicator lights on or off depending on the situation. The signal receiver 700 also has the function of turning off the alarm signal continuously transmitted by the signal transmitting component 300, which is used to clear the alarm and restore the monitoring state.

[0040] In some embodiments, the signal receiver 700 is configured with indicator lights and buttons in this application without limitation. For example, if there is an unauthorized connection to the pipe to receive the signal: the red light flashes continuously as an alarm; if someone damages or cuts the wire: the red light stays on as an alarm; if the battery is low: the blue light alarms, prompting for battery replacement; to return to normal status: press the green light button to disconnect the power and enter the monitoring state.

[0041] Normal monitoring status: At this time, the limit switch 330 is electrically connected to the power supply (battery box 310), the connecting block 510 does not touch the limit switch 330, the power supply is in the power off state, the signal transmitter 320 does not work and does not transmit alarm signals, and the inspection personnel regard the inspection well as being in normal working status.

[0042] Abnormal Alarm Status: When an unauthorized pipe is drilled through the well wall and enters the well shaft, the installed guardrail 400 (PVC mesh) deforms and moves inward into the well shaft, causing the support ring 410 at the top of the support rod 600 to move downward. This triggers the overlapping block 510 to move downward, causing the overlapping block 510 to press the contacts of the limit switch 330, opening the limit switch 330. The signal from the limit switch 330 is transmitted through the signal line to power it on, and the signal transmitter 320 continuously transmits a wireless signal. When patrol personnel arrive nearby, the personal signal receiver 700 illuminates a warning light, allowing for investigation of the situation inside the well and tracing the source. After the investigation is completed, the signal receiver 700 can be remotely powered off to restore normal monitoring status.

[0043] After the unauthorized underground pipe connection is eliminated: repair and lay the 400mm PVC mesh fence flat on the well wall, restore the signal line connection, and restore the equipment to normal working condition. If the signal transmission line is maliciously cut, the signal transmitter 320 has an anti-vandalism function, which can automatically turn on the power and continuously emit a warning signal. Patrol personnel can also receive the warning signal to investigate.

[0044] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes, characterized in that, The system includes an upper manhole cover (100), a lower manhole cover (200) at the bottom of the upper manhole cover (100), a signal transmitting component (300) on the lower manhole cover (200), and a fence (400) attached to the manhole wall at the bottom of the lower manhole cover (200). The top of the fence (400) is connected to the bottom of the lower manhole cover (200) through multiple elastic components (500). Each elastic component (500) is connected to an overlapping block (510) at its bottom. A limit switch (330) is provided at the corresponding position of the overlapping block (510). The limit switch (330) is electrically connected to the signal transmitting component (300). When a hidden pipe is installed, the fence (400) drives the overlapping block (510) to move away from the upper manhole cover (100). The overlapping block (510) overlaps the limit switch (330) to trigger the signal transmitting component (300) to emit an alarm signal.

2. A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes as described in claim 1, characterized in that, It also includes multiple support rods (600) connected to the bottom of the lower manhole cover (200), the support rods (600) are set inside the fence (400), and multiple limiting grooves (610) are set on the outside of the support rods (600); the fence (400) is a hollow cylindrical structure with openings at the top and bottom, and multiple support rings (410) are set on the fence (400), and the support rings (410) are engaged in the limiting grooves (610).

3. A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes, as described in claim 2, is characterized in that... The limiting groove (610) includes a first limiting groove (611), a second limiting groove (612), and a third limiting groove (613) arranged at equal intervals. A first support ring (411), a second support ring (412), and a third support ring (413) are arranged on the fence (400) at positions corresponding to the limiting groove (610). The first limiting groove (611) is located at the top of the support rod (600). The elastic component (500) and the overlapping block (510) are located in the first limiting groove (611). The limit switch (330) is located at the top of the support rod (600). The contact of the limit switch (330) is close to the overlapping block (510). The height of the limiting groove (610) is slightly greater than the distance that the overlapping block (510) moves vertically downward until it contacts the contact of the limit switch (330).

4. A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes, as described in claim 2, is characterized in that... The lower manhole cover (200) has a disc-shaped bottom and an annular protrusion on the top. The signal transmitting component (300) is located inside the annular protrusion of the lower manhole cover (200). A cover plate (210) is provided on the upper part of the signal transmitting component (300). A cover plate groove (220) is provided on the edge of the annular protrusion of the lower manhole cover (200). The cover plate (210) is engaged in the cover plate groove (220). Multiple through holes (230) are provided on the lower manhole cover (200).

5. A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes as described in claim 4, characterized in that, The fence (400) is made of PVC mesh, the support rod (600) is made of fiberglass square tube, the limit switch (330) is a waterproof limit switch, and the elastic component (500) is a stainless steel spring.

6. A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes as described in claim 1, characterized in that, The signal transmitting assembly (300) includes a battery box (310) and a signal transmitter (320).

7. A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes as described in claim 1, characterized in that, It also includes a signal receiver (700) for receiving alarm signals transmitted by the signal transmitting component (300).

8. A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes, as described in claim 2, is characterized in that... It also includes multiple U-shaped clamps (620) for fixing the support rod (600) to the well wall.

9. A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes as described in claim 1, characterized in that, The travel distance of the limit switch (330) is 3mm.

10. A manhole cover for preventing the unauthorized discharge of pollutants through concealed pipes as described in claim 1, characterized in that, The overlapping block (510) is an aluminum alloy pyramid.

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