Underground water liquid pollutant diffusion detection device and diffusion prevention method thereof

Abstract

The invention discloses an underground water liquid pollutant diffusion detection device and an anti-diffusion method thereof, and relates to the technical field of environmental monitoring, the underground water liquid pollutant diffusion detection device comprises an enclosure, the enclosure is provided with a guide mechanism, and the guide mechanism is provided with a control mechanism. A double-shaft motor is started, a first rotating shaft drives a spur gear to rotate, conducts circular motion along a tooth opening of an outer gear ring and meanwhile drives a machine box to move along with the spur gear, the machine box is promoted to conduct circular motion under limiting sliding of a sliding strip and an annular groove, a soil storage groove is filled with broken soil, and the output end of the double-shaft motor enables a second rotating shaft to rotate at the same time; the helical gear I is meshed with the helical gear II to rotate, so that the spiral auger rotates, the crushed soil enters the cylinder sleeve along the feeding pipe and is conveyed to the rear end of the cylinder sleeve, and the crushed soil is spread on the circle of the ring opening of the enclosure in a circumferential track after being discharged, so that the periphery of the liquid level of the liquid pollutants is blocked; and liquid pollutants are prevented from directly flowing out of a ring opening of the enclosure.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring technology, specifically to a detection device for the diffusion of liquid pollutants in groundwater and a method for preventing their diffusion. Background Technology

[0002] Soil is an important component of the ecological environment on which humans depend for survival. However, with the rapid development of urbanization and industrialization, organic pollutants migrate into the soil environment during production and use, which not only damages the soil's own ecosystem but also threatens groundwater resources. Therefore, soil protection and the remediation of polluted soil are receiving increasing attention and importance both domestically and internationally.

[0003] According to Chinese Patent Publication No. CN103033540A, this patent provides a real-time automatic monitoring system for the diffusion of underground light non-aqueous liquid pollutants. The system includes a resistivity detection system for detection, data acquisition, and wireless transmission, and a host computer for sending commands, receiving data, automatically identifying pollution, real-time display, and automatic alarm functions. The resistivity detection system includes at least five resistivity monitoring devices. Each device includes a resistivity probe and an equipment compartment located at the top of the probe. The equipment compartment contains a GPRS wireless transmission module, a data control module, and a GPRS antenna extending outside the compartment. The resistivity probe is a cylindrical structure with at least four electrode rings evenly spaced on its outer surface. The electrode rings are connected to the data control module via wires located inside the cylindrical structure. The host computer includes a server containing a client control program and an alarm device connected to the server. The client control program is used to configure the resistivity detection system. The system parameters, sends data acquisition commands, remotely and synchronously transmits monitoring data, automatically identifies pollution, displays the real-time resistivity curve after pollution, and sends alarm signals to the alarm device. The client control program communicates with the resistivity detection system via TCP / IP protocol. The resistivity probe is a hollow cylindrical structure made of hollow tubular nylon modules, with copper electrode rings clamped between adjacent modules. Inside the cylindrical structure, there are wires connecting the copper electrode rings to the data control module. The hollow cylindrical structure is filled with epoxy resin binder, which can obtain the underground three-dimensional spatial distribution at any time after pollution, realizing real-time pollution monitoring in three-dimensional space. It is simple to operate, accurate in measurement, reliable in operation, and can realize real-time monitoring and wireless data transmission. It can dynamically monitor the diffusion process after NAPLs leakage in real time and determine the pollution range by the pollution front advancement process. Therefore, it can be widely used in dynamic monitoring of underground pollution after NAPLs leakage in large petrochemical enterprises, gas stations, etc. The monitoring system of this invention can control multiple sets of on-site pollution monitoring devices with one central monitoring computer, receive multiple sets of data simultaneously, and realize multi-point monitoring; it can realize wireless two-way communication, support long-term online operation, realize long-term unattended automatic monitoring, and automatically save data; the hardware can be customized according to needs, the system configuration is flexible, and the cost is reduced.

[0004] However, groundwater pollutants can migrate into the soil environment, which not only damages the soil's own ecosystem but also threatens groundwater resources. The patent monitors the diffusion of liquid pollutants in real time, but cannot immediately take measures to prevent the diffusion of liquid pollutants, thus posing a risk of further diffusion of liquid pollutants. Summary of the Invention

[0005] This invention provides a detection device and a method for preventing the diffusion of liquid pollutants in groundwater, in order to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a detection device for the diffusion of liquid pollutants in groundwater, comprising a ring, a guiding mechanism on the ring, and a control mechanism on the guiding mechanism, the control mechanism including an anti-diffusion mechanism, the guiding mechanism including a track ring, the track ring being fixedly fitted onto the outer wall of the ring opening, the top of the outer wall of the track ring having an annular groove, the bottom of the outer wall of the track ring being fixedly connected to an external gear ring, the control mechanism including a housing, the bottom of the inner wall of the housing being fixedly installed with a dual-shaft motor, the output end of the dual-shaft motor being fixedly connected to a rotating shaft one via a coupling, the other end of the rotating shaft one movably extending to the outer bottom of the housing, and fixedly fitted with a spur gear, the bottom of the outer wall of the housing being fixedly installed with a sliding strip, the sliding strip being slidably connected to the inner wall of the annular groove, the spur gear meshing with the external gear ring.

[0007] A further improvement of the technical solution of the present invention is that: the control mechanism further includes a second rotating shaft, the other output end of the dual-shaft motor is fixedly connected to one end of the second rotating shaft through a coupling, and a helical gear is fixedly sleeved on the outer wall of the other end of the second rotating shaft.

[0008] Using the above technical solution, the dual-axis motor in this solution can make two rotating shafts rotate simultaneously while working, and drive their respective gears to produce corresponding effects.

[0009] A further improvement of the technical solution of the present invention is that: the anti-diffusion mechanism includes a frame, which is fixedly installed on the bottom of the inner wall of the casing. A through hole is opened on the back of the outer wall of the casing, and a sleeve is fixedly connected to the inner wall of the through hole. The rear end of the sleeve is located outside the casing, and the front end of the sleeve is located inside the casing and is sealed. A spiral auger is installed inside the sleeve. The front end of the spiral auger is rotatably connected to the inner wall of the sealed end of the sleeve through a bearing and continues to move through the outer wall of the sealed end. A helical gear II is fixedly sleeved on the outer wall of the penetrating end of the spiral auger. A soil storage trough is fixedly installed on the top of the casing. One end of a feed pipe is connected to the bottom of the soil storage trough, and the other end of the feed pipe moves through into the casing and is connected to the top of the sleeve.

[0010] In the above technical solution, the soil storage trough is filled with crushed soil, which enters the sleeve along the feed pipe and is then discharged to the rear end of the sleeve via a spiral auger.

[0011] A further improvement of the technical solution of the present invention is that the second helical gear meshes with the first helical gear.

[0012] Using the above technical solution, helical gear one meshes with helical gear two to rotate, thereby causing the auger to rotate.

[0013] A further improvement of the technical solution of the present invention is that: an installation plate is fixedly installed on the front side of one side of the inner wall of the ring, and a monitoring device is fixedly installed on the top of the installation plate. The monitoring device is provided with a switch control module one and a switch control module two. The switch control module one is electrically connected to the dual-axis motor.

[0014] Using the above technical solution, the switch control module in the solution can turn the dual-axis motor on or off in response.

[0015] A further improvement of the technical solution of the present invention is that: a hydraulic rod is fixedly installed at the bottom of the mounting plate, a blocking block is fixedly installed at the bottom end of the inner rod of the hydraulic rod, and the second switch control module is electrically connected to the hydraulic rod.

[0016] Using the above technical solution, the switch control module 2 responds to open the hydraulic rod, causing its inner rod to push the blocking block downward to seal the connection port of the sewage inlet pipe.

[0017] A further improvement of the technical solution of the present invention is that: the outer wall of the enclosure is connected to one end of the sewage inlet pipe, and a sewage inlet valve is fixedly installed on the sewage inlet pipe.

[0018] Using the above technical solution, the groundwater liquid pollutants in this solution enter the enclosure through the sewage inlet pipe for centralized collection.

[0019] A further improvement of the technical solution of the present invention is that: a sewage pipe is connected to the back of the outer wall of the enclosure, and a sewage valve is fixedly installed on the sewage pipe; one end of a return pipe is connected to the top of the sewage pipe, and the other end of the return pipe is connected to the rear side of the inner wall of the enclosure; a liquid level sensor is fixedly installed on the inner wall of the end of the return pipe away from the sewage pipe.

[0020] Using the above technical solution, the return pipe in the solution can guide the rising liquid level to flow back to the sewage pipe to discharge to a certain extent, thereby reducing the speed at which the liquid level rises.

[0021] A further improvement of the technical solution of the present invention is that: the signal terminal of the liquid level sensor is connected to the signal terminals of switch control module one and switch control module two respectively, and the liquid level sensor is also electrically connected to the drain valve.

[0022] Using the above technical solution, the liquid level sensor in the solution can simultaneously respond to switch control module one, switch control module two, and the drain valve.

[0023] A method for preventing the diffusion of liquid pollutants in groundwater using a detection device includes the following steps:

[0024] S1. The sewage inlet valve is opened, allowing the liquid pollutants in the groundwater to flow into the enclosure through the sewage inlet pipe. This serves as a temporary barrier to prevent the spread of the liquid pollutants. The liquid level gradually rises within the enclosure and comes into contact with the liquid level sensor. The signal terminal responds to the monitoring device, prompting the switch control module to activate the dual-axis motor. This causes the rotating shaft to drive the spur gear to rotate and move the chassis in a circular motion along the teeth of the outer gear ring.

[0025] S2. The rotating shaft 2 causes the helical gear 1 to mesh with the helical gear 2 and rotate, thereby causing the spiral auger to rotate and transport the crushed soil in the soil storage tank. The crushed soil is spread in a circular trajectory around the opening of the ring, thereby sealing the outer perimeter of the liquid contaminant.

[0026] S3. The return pipe can guide the rising liquid level back to the drain pipe to a certain extent, reducing the speed of the liquid level rise and avoiding the risk of rapid liquid level rise and overflow before all electrical equipment is fully activated.

[0027] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0028] 1. This invention provides a detection device and a method for preventing the diffusion of liquid pollutants in groundwater. It employs a dual-shaft motor, causing the first shaft to rotate and drive a spur gear to rotate, making a circular motion along the teeth of an external gear ring. Simultaneously, the machine housing moves accordingly, and under the limiting sliding of the slide bar and the ring groove, the machine housing rotates in a circular motion. The storage tank is filled with crushed soil. The output of the dual-shaft motor simultaneously rotates the second shaft, which rotates through the meshing of a helical gear, causing the auger to rotate. The crushed soil is fed into the sleeve through the feed pipe and transported to the rear end of the sleeve. After discharge, the crushed soil forms a circular trajectory and is spread around the opening of the surrounding ring, thereby sealing the outer perimeter of the liquid pollutant and preventing the liquid pollutant from flowing directly out of the ring opening.

[0029] 2. This invention provides a detection device and a method for preventing the diffusion of liquid pollutants in groundwater. The device uses an open hydraulic rod to push the inner rod downward to block the inlet of the sewage pipe, preventing groundwater from continuing to enter the enclosure. At the same time, the sewage valve is opened, allowing the liquid pollutants to be discharged from the sewage pipe to the sewage treatment process. The return pipe can guide the rising liquid level back to the sewage pipe to a certain extent, reducing the speed of the liquid level rise. Before all electrical equipment is fully activated, the risk of rapid liquid level rise and overflow is avoided.

[0030] 3. This invention provides a detection device and a method for preventing the diffusion of liquid pollutants in groundwater. The device uses a liquid level sensor to detect liquid pollutants in groundwater and responds to the monitoring device in a timely manner after contacting the liquid surface. This prompts the switch control module one to activate the dual-axis motor, and the switch control module two to activate the hydraulic rod. At the same time, the drain valve opens to treat the liquid pollutants in a timely manner and prevent their diffusion. As the liquid level drops, the device will gradually reset each electrical device, thereby continuing to contain and protect the groundwater injected into the enclosure. Attached Figure Description

[0031] Figure 1 This is a perspective view of the present invention;

[0032] Figure 2 This is a schematic diagram of the track ring structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the bottom structure of the track ring of the present invention;

[0034] Figure 4 This is a cross-sectional view of the chassis of the present invention;

[0035] Figure 5 This is a rear view of the enclosure of the present invention;

[0036] Figure 6 This is a cross-sectional view of the enclosure of the present invention;

[0037] Figure 7 This is a schematic diagram of the sewage pipe structure of the present invention.

[0038] In the diagram: 1. Enclosure; 2. Guiding mechanism; 201. Track ring; 202. Ring groove; 203. External gear ring; 3. Control mechanism; 301. Chassis; 302. Dual-shaft motor; 303. Shaft 1; 304. Spur gear; 305. Sliding bar; 306. Shaft 2; 307. Helical gear 1; 4. Anti-diffusion mechanism; 401. Frame; 402. Sleeve; 403. Spiral auger; 404. Helical gear 2; 405. Soil storage trough; 406. Feed pipe; 5. Mounting plate; 6. Monitoring device; 7. Hydraulic rod; 8. Blocking block; 9. Sewage inlet pipe; 10. Sewage outlet pipe; 11. Return pipe; 12. Liquid level sensor. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to embodiments:

[0040] Example 1

[0041] like Figure 1 , 2As shown in Figures 3, 4, and 6, this invention provides a detection device for the diffusion of liquid pollutants in groundwater, comprising a ring 1, a guiding mechanism 2 on the ring 1, and a control mechanism 3 on the guiding mechanism 2. The control mechanism 3 includes an anti-diffusion mechanism 4. The guiding mechanism 2 includes a track ring 201, which is fixedly fitted onto the outer wall of the ring 1. A ring groove 202 is formed on the top of the outer wall of the track ring 201, and an external toothed ring 203 is fixedly connected to the bottom of the outer wall of the track ring 201. The control mechanism 3 includes a housing 301, and a dual-shaft motor 302 is fixedly installed on the bottom of the inner wall of the housing 301. The output end of the dual-shaft motor 302 is fixedly connected to a rotating shaft 303 via a coupling. The other end extends to the bottom outer side of the chassis 301 and is fixedly fitted with a spur gear 304. A slide bar 305 is fixedly installed on the bottom of the outer wall of the chassis 301. The slide bar 305 is slidably connected to the inner wall of the annular groove 202. The spur gear 304 meshes with the external gear ring 203. The control mechanism 3 also includes a second rotating shaft 306. The other output end of the dual-axis motor 302 is fixedly connected to one end of the second rotating shaft 306 through a coupling. A helical gear 307 is fixedly fitted on the outer wall of the other end of the second rotating shaft 306. When the dual-axis motor 302 is working, it can make the two rotating shafts rotate simultaneously and drive their respective gears to produce corresponding effects. The anti-diffusion mechanism 4 includes a stand 401, which is fixedly installed on the chassis 301. The bottom of the inner wall of the casing 301 has a through hole on the back of the outer wall, and a sleeve 402 is fixedly connected to the inner wall of the through hole. The rear end of the sleeve 402 is located outside the casing 301, and the front end of the sleeve 402 is located inside the casing 301 and is sealed. A spiral auger 403 is installed inside the sleeve 402. The front end of the spiral auger 403 is rotatably connected to the inner wall of the sealed end of the sleeve 402 through a bearing, and continues to move through the outer wall of the sealed end. A helical gear 404 is fixedly fitted on the outer wall of the through end of the spiral auger 403. A soil storage trough 405 is fixedly installed on the top of the casing 301. One end of a feed pipe 406 is connected to the bottom of the soil storage trough 405, and the other end of the feed pipe 406 moves through the casing 301. Inside the ring 1, and connected to the top of the sleeve 402, the soil storage trough 405 is filled with crushed soil. The crushed soil enters the sleeve 402 along the feed pipe 406 and is discharged to the rear end of the sleeve 402 through the spiral auger 403. The second helical gear 404 meshes with the first helical gear 307. The first helical gear 307 meshes with the second helical gear 404 to rotate, thereby causing the spiral auger 403 to rotate. An installation plate 5 is fixedly installed on the front side of one side of the inner wall of the ring 1, and a monitoring device 6 is fixedly installed on the top of the installation plate 5. The monitoring device 6 is equipped with a switch control module 1 and a switch control module 2. The switch control module 1 is electrically connected to the dual-axis motor 302. The switch control module 1 responds to turn the dual-axis motor 302 on or off.

[0042] In this embodiment, by turning on the dual-shaft motor 302, the rotating shaft 303 drives the spur gear 304 to rotate and make a circular motion along the toothed edge of the external gear ring 203. At the same time, it drives the housing 301 to make a circular motion. The soil storage tank 405 is filled with broken soil. The rotating shaft 306 rotates and rotates through the meshing of the helical gear 404 with the helical gear 307, thereby causing the spiral auger 403 to rotate and convey the broken soil along the rear end of the sleeve 402 and spread it around the circumference of the ring 1 in a circular trajectory, thereby sealing the outer perimeter of the liquid contaminant and preventing the liquid contaminant from flowing out directly from the circumference of the ring 1.

[0043] Example 2

[0044] like Figure 1 , 5 As shown in Figures 6 and 7, based on Embodiment 1, the present invention provides a technical solution: Preferably, a hydraulic rod 7 is fixedly installed at the bottom of the mounting plate 5, and a blocking block 8 is fixedly installed at the bottom end of the inner rod of the hydraulic rod 7. The second switch control module is electrically connected to the hydraulic rod 7. The second switch control module responds to open the hydraulic rod 7, causing its inner rod to push down and push the blocking block 8 to seal the opening of the sewage inlet pipe 9. One end of the sewage inlet pipe 9 is connected to the front of the outer wall of the enclosure 1, and a sewage inlet valve is fixedly installed on the sewage inlet pipe 9. The pollutants enter the enclosure 1 through the inlet pipe 9 for centralized collection. A drain pipe 10 is connected to the back of the outer wall of the enclosure 1, and a drain valve is fixedly installed on the drain pipe 10. One end of the return pipe 11 is connected to the top of the drain pipe 10, and the other end of the return pipe 11 is connected to the rear side of the inner wall of the enclosure 1. A liquid level sensor 12 is fixedly installed on the inner wall of the end of the return pipe 11 away from the drain pipe 10. The return pipe 11 can guide the rising liquid level to flow back to the drain pipe 10 to discharge to a certain extent, thereby reducing the rising speed of the liquid level.

[0045] In this embodiment, by activating the hydraulic rod 7, its inner rod is pushed downward to block the block 8, sealing the opening of the sewage inlet pipe 9 and preventing groundwater from continuing to enter the enclosure 1. At the same time, the sewage discharge valve is opened, allowing liquid pollutants to be discharged from the sewage discharge pipe 10 to the sewage treatment process for treatment. The return pipe 11 can guide the rising liquid level to flow back to the sewage discharge pipe 10 to a certain extent, reducing the speed of liquid level rise and avoiding the risk of rapid liquid level rise, overflow, and diffusion before all electrical equipment is fully activated.

[0046] Example 3

[0047] like Figure 1 , 4As shown in Figures 5, 6, and 7, based on Embodiment 1, the present invention provides a technical solution: preferably, the signal terminal of the liquid level sensor 12 is connected to the signal terminals of switch control module 1 and switch control module 2 respectively, and the liquid level sensor 12 is also electrically connected to the drain valve. The liquid level sensor 12 can simultaneously respond to switch control module 1, switch control module 2, and drain valve.

[0048] In this embodiment, the liquid level sensor 12 detects groundwater liquid pollutants and responds to the monitoring device 6 in a timely manner after contacting the liquid surface. This prompts the switch control module 1 to activate the dual-axis motor 302, while the switch control module 2 activates the hydraulic rod 7. At the same time, the drain valve opens to promptly treat the liquid pollutants and prevent their spread. As the liquid level decreases, each electrical device will be reset in turn, thereby continuing to contain and protect the groundwater injected into the enclosure 1.

[0049] Example 4

[0050] Based on Examples 1 to 3, the present invention provides a method for preventing the diffusion of groundwater liquid pollutants using a detection device, comprising the following steps:

[0051] S1. The sewage inlet valve is opened, allowing the liquid pollutants in the groundwater to be concentrated and flow into the enclosure 1 through the sewage inlet pipe 9. This serves as a temporary barrier to prevent the spread of the liquid pollutants. The liquid level gradually rises within the enclosure 1 and comes into contact with the liquid level sensor 12. The signal terminal responds to the monitoring device 6, prompting the switch control module 1 to activate the dual-axis motor 302. This causes the rotating shaft 303 to drive the spur gear 304 to rotate, and along the teeth of the outer gear ring 203, it drives the housing 301 to perform a circular motion.

[0052] S2, the rotating shaft 306 causes the helical gear 307 to mesh with the helical gear 404 to rotate, thereby causing the spiral auger 403 to rotate and transport the broken soil in the soil storage tank 405, spreading the broken soil in a circular trajectory around the opening of the ring 1, thereby sealing the outer perimeter of the liquid contaminant.

[0053] S3, the return pipe 11 can guide the rising liquid level to flow back to the drain pipe 10 to discharge to a certain extent, reduce the rising speed of the liquid level, and avoid the risk of rapid rise and overflow of the liquid level before all electrical equipment is fully activated.

[0054] The working principle of the detection device for the diffusion of liquid pollutants in groundwater and its anti-diffusion method will be explained in detail below.

[0055] like Figure 1-7As shown, the enclosure 1 serves as a temporary protective device to prevent the spread of liquid pollutants in groundwater and to collect them inside the enclosure 1. By opening the inlet valve, the liquid pollutants are concentrated and flow into the enclosure 1. As the liquid level gradually rises within the enclosure 1, it comes into contact with the level sensor 12. This triggers a signal response from the monitoring device 6, causing the switch control module 1 to activate the dual-axis motor 302. This causes the rotating shaft 303 to drive the spur gear 304 to rotate along the external gear ring 203. The toothed jaws perform a circular motion, simultaneously driving the housing 301 to move accordingly. Under the limiting sliding of the slide bar 305 and the annular groove 202, the housing 301 is forced to perform a circular motion. The soil storage trough 405 is filled with broken soil. The output end of the dual-shaft motor 302 simultaneously rotates the second rotating shaft 306, which in turn rotates through the meshing of the first helical gear 307 and the second helical gear 404, thereby causing the auger 403 to rotate. This propels the broken soil along the feed pipe 406 into the sleeve 402 and conveys it towards the rear end of the sleeve 402. After the crushed soil is discharged, it spreads in a circular trajectory around the opening of the enclosure 1, thereby sealing the outer perimeter of the liquid pollutant and preventing the liquid pollutant from flowing directly out of the opening of the enclosure 1. At the same time, the switch control module 2 responds and opens the hydraulic rod 7, causing its inner rod to push down the blocking block 8 to block the connection of the sewage inlet pipe 9, preventing groundwater from continuing to enter the enclosure 1. Simultaneously, the sewage valve opens, allowing the liquid pollutant to be discharged from the sewage pipe 10 to the sewage treatment process for treatment. The return pipe 11 can guide the rising liquid level to flow back to the sewage pipe 10 to discharge to a certain extent, reducing the speed of the liquid level rise. Before all electrical equipment fully responds and starts, it avoids the risk of the liquid level rising rapidly and overflowing. When the liquid level drops, the liquid level sensor 12 does not contact the liquid level for a period of time before responding to the signal of the switch control module 1 and the switch control module 2, thereby turning off the dual-axis motor 302 and retracting the inner rod of the hydraulic rod 7, moving the blocking block 8 away from the sewage inlet pipe 9, and continuing the injection of groundwater liquid pollutants.

Claims

1. A device for detecting the diffusion of a liquid pollutant in groundwater, comprising a collar (1), characterized in that: The enclosure (1) is provided with a guiding mechanism (2), and the guiding mechanism (2) is provided with a control mechanism (3). The control mechanism (3) includes an anti-spreading mechanism (4). The guiding mechanism (2) includes a track ring (201), and the track ring (201) is fixedly fitted onto the outer wall of the enclosure (1). The top of the outer wall of the track ring (201) is provided with an annular groove (202), and the bottom of the outer wall of the track ring (201) is fixedly connected with an external toothed ring (203). The control mechanism (3) includes a housing (301), and the machine... A dual-axis motor (302) is fixedly installed on the bottom inner wall of the housing (301). The output end of the dual-axis motor (302) is fixedly connected to a rotating shaft (303) via a coupling. The other end of the rotating shaft (303) extends movably through to the outside of the bottom of the housing (301) and is fixedly fitted with a spur gear (304). A slide bar (305) is fixedly installed on the bottom outer wall of the housing (301). The slide bar (305) is slidably connected to the inner wall of the ring groove (202). The spur gear (304) meshes with the external gear ring (203).

2. The device for detecting the diffusion of liquid pollutants in groundwater according to claim 1, characterized in that: The control mechanism (3) also includes a second rotating shaft (306). The other output end of the dual-shaft motor (302) is fixedly connected to one end of the second rotating shaft (306) via a coupling, and a helical gear (307) is fixedly sleeved on the outer wall of the other end of the second rotating shaft (306).

3. The device for detecting the diffusion of a liquid pollutant in groundwater according to claim 2, characterized in that: The anti-proliferation mechanism (4) includes a platform (401), which is fixedly installed on the bottom of the inner wall of the chassis (301). A through hole is provided on the back of the outer wall of the chassis (301), and a sleeve (402) is fixedly connected to the inner wall of the through hole. The rear end of the sleeve (402) is located outside the chassis (301), and the front end of the sleeve (402) is located inside the chassis (301) and is sealed. A spiral auger (403) is provided inside the sleeve (402). 3) The front end is rotatably connected to the inner wall of the sealing end of the sleeve (402) through the bearing, and continues to move through the outer wall of the sealing end. The outer wall of the through end of the spiral auger (403) is fixedly fitted with a helical gear (404). The top of the machine box (301) is fixedly installed with a soil storage trough (405). The bottom of the soil storage trough (405) is connected to one end of the feed pipe (406), and the other end of the feed pipe (406) moves through the machine box (301) and is connected to the top of the sleeve (402).

4. The device for detecting the diffusion of a liquid pollutant in groundwater according to claim 3, characterized in that: The second helical gear (404) meshes with the first helical gear (307).

5. The device of claim 1, wherein: An installation plate (5) is fixedly installed on the front side of one side of the inner wall of the ring (1), and a monitoring device (6) is fixedly installed on the top of the installation plate (5). The monitoring device (6) is equipped with a switch control module one and a switch control module two. The switch control module one is electrically connected to the dual-axis motor (302).

6. The detection device for the diffusion of liquid pollutants in groundwater according to claim 5, characterized in that: A hydraulic rod (7) is fixedly installed at the bottom of the mounting plate (5), and a blocking block (8) is fixedly installed at the bottom of the inner rod of the hydraulic rod (7). The switch control module II is electrically connected to the hydraulic rod (7).

7. The device of claim 1, wherein: The outer wall of the enclosure (1) is connected to one end of the sewage inlet pipe (9), and a sewage inlet valve is fixedly installed on the sewage inlet pipe (9).

8. The device of claim 5, wherein: A drain pipe (10) is connected to the back of the outer wall of the enclosure (1), and a drain valve is fixedly installed on the drain pipe (10). One end of a return pipe (11) is connected to the top of the drain pipe (10), and the other end of the return pipe (11) is connected to the rear side of the inner wall of the enclosure (1). A liquid level sensor (12) is fixedly installed on the inner wall of the end of the return pipe (11) away from the drain pipe (10).

9. The device of claim 8, wherein: The signal terminals of the liquid level sensor (12) are respectively connected to the signal terminals of switch control module one and switch control module two, and the liquid level sensor (12) is also electrically connected to the drain valve.

10. A method of preventing the diffusion of a liquid pollutant of groundwater by means of a device for detecting the diffusion of a liquid pollutant of groundwater, characterized in that: Includes the following steps: S1. The sewage inlet valve is opened, allowing the liquid pollutants in the groundwater to be concentrated and flow into the enclosure (1) through the sewage inlet pipe (9) as a temporary protection to prevent the spread of the liquid pollutants. The liquid level gradually rises in the enclosure (1) and comes into contact with the liquid level sensor (12). The signal terminal responds to the monitoring device (6), prompting the switch control module to respond and start the dual-axis motor (302), so that the rotating shaft (303) drives the spur gear (304) to rotate and drive the machine box (301) to perform circumferential motion along the tooth of the outer tooth ring (203). S2, the rotating shaft (306) causes the helical gear (307) to mesh with the helical gear (404) and rotate, thereby causing the spiral auger (403) to rotate and transport the broken soil in the soil storage tank (405), spreading the broken soil in a circular trajectory around the opening of the ring (1), thereby sealing the outer perimeter of the liquid pollutant. S3, the return pipe (11) can guide the rising liquid level to flow back to the drain pipe (10) to discharge to a certain extent, reduce the rising speed of the liquid level, and avoid the risk of rapid rise and overflow of the liquid level before all electrical equipment is fully activated.

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