Earthquake monitoring device and method for monitoring chemical components of underground water

Abstract

The invention relates to the technical field of earthquake monitoring, and discloses an earthquake monitoring device and a monitoring method for underground water chemical compounds.The earthquake monitoring device comprises a hoisting frame, a hoisting mechanism is arranged on the hoisting frame, a detection mechanism is arranged on the hoisting mechanism, and an anti-blocking mechanism is further arranged on the hoisting mechanism. According to the radon detection device, a user can know the condition of radon in water in real time according to the content of radon in the water detected each time, the flowing water can prevent moss and other substances from growing in the detection shell, meanwhile, when an earthquake occurs, the water pumped by the water pump can be filtered, and therefore the detection device is prevented from being blocked, and meanwhile the detection efficiency is improved. The radon detection device solves the problem that radon detection results are affected due to the fact that the radon detection device is used for radon detection, a filter screen can be flushed during drainage so as to avoid blockage of the filter screen, and meanwhile, a water pump and a detection motor stop running in the drainage stage so as to achieve the effect of reducing energy consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of earthquake monitoring, in particular to an earthquake monitoring device and a monitoring method for chemical components of underground water. BACKGROUND

[0002] Earthquake is a natural phenomenon on the earth's surface, because it has great destructive power, in order to reduce the destructive power caused by earthquake, it is necessary to predict earthquake, in the earthquake detection technology, earthquake precursor is one of the important basis for predicting earthquake, in the related earthquake precursor collection and judgment basis, detecting the chemical components in underground water is one of the methods of earthquake detection.

[0003] Chinese patent CN119805543B discloses an underwater earthquake detection device and its use method, which performs bubble degassing inside the separation pipe, promotes the escape position of the slightly soluble gas to be fixed, and uses the separation pipe to guide the bubbles, so that the airflow finally converges in the gas collection cover. At the same time, during the gas collection process, the well water is circulated in the separation pipe, not only making the floating bubbles enter the separation pipe under the wrapping of the water flow, but also using the bubbles to promote the further escape of the slightly soluble gas in the well water, thereby effectively enhancing the detection effect of radon element in the well water and providing effective data support for earthquake detection. However, the above technical solution still has certain defects in use, for example: when an earthquake occurs, the silt in the bottom of the static water well is easily affected by vibration and appears to be upwelling in the static water well. The upwelling silt not only affects the outgassing effect of radon gas, but also causes the blockage of the above-mentioned equipment, thereby affecting the detection efficiency and effect of the device. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an earthquake monitoring device and a monitoring method for chemical components of underground water, which solves the above problems.

[0005] To solve the above technical problems, the present application provides the following technical scheme: an earthquake monitoring device, comprising a hoisting frame, a hoisting mechanism is arranged on the hoisting frame, a detection mechanism is arranged on the hoisting mechanism, the detection mechanism is used for detecting radon gas, and the hoisting mechanism is used for hoisting the detection mechanism; The detection mechanism comprises a detection motor, a water pump, an air pump, a detection shell and a detection pipe, a detection electromagnetic valve is arranged on the detection pipe, the detection motor can drive the water pump to operate when detecting, so as to draw water into the detection shell, the air pump is used for conveying gas into the detection shell, and the detection pipe is used for collecting and detecting the outgassed radon gas; The hoisting mechanism is also equipped with an anti-clogging mechanism, which includes a filter screen, a spray head, and a convex plate. The filter screen is used to block impurities. The spray head is equipped with a drain solenoid valve. The spray head is connected to the detection housing. When the spray head drains water, it can rinse the filter screen. The convex plate is used to drive the filter screen to move. The detection motor includes two operating states: medium speed and high speed. During the medium-speed phase, the water pump and air pump operate to release radon gas from the water inside the detection housing. The released radon gas can be transported to an external detection mechanism through the detection tube. When the detection ends, the detection motor is turned off, while the air pump continues to operate. At this time, the water inside the detection housing can be discharged through the spray head, and the filter screen is opened. During the high-speed phase, the water pump and air pump can operate synchronously at high speed. Similarly, the detection mechanism extracts radon gas from the new water body and detects the extracted radon gas through the detection tube. During the operation of the detection mechanism, the convex plate can drive the filter screen to move upward to block impurities in the extracted water body.

[0006] Preferably, the hoisting mechanism includes a fixed frame, on which a hoisting motor is mounted, a take-up roller is mounted on the output shaft of the hoisting motor, a hoisting rope is mounted on the take-up roller, and a base plate is fixedly connected to the end of the hoisting rope away from the take-up roller. The detection motor, water pump, air pump, and detection housing are all mounted on the base plate.

[0007] Preferably, a liquid level sensor is provided inside the detection housing, and the liquid level sensor is externally connected to a PLC controller. The water pump is provided with an inlet pipe and an outlet pipe. The end of the inlet pipe away from the water pump passes through the base plate and is connected to a filter cartridge. The end of the outlet pipe away from the water pump is connected to the detection housing.

[0008] Preferably, the detection motor and the air pump are both externally connected to a PLC controller, and the air pump can perform medium-speed and high-speed air filling. The air pump is equipped with a one-way pipe, and a one-way valve is located inside the one-way pipe. The detection tube is installed on the detection housing and is distributed at the top of the detection housing. The end of the detection solenoid valve away from the detection tube is connected to an extension tube, and the extension tube is externally connected to the analysis mechanism.

[0009] Preferably, the spray head is provided with a plurality of angled spray heads around its circumference. The spray head is mounted on the filter screen. A connecting rod is fixedly connected to the filter screen. The connecting rods are symmetrically distributed. The end of the connecting rod away from the filter screen passes through the base plate and is fixedly connected to a C-shaped plate. The C-shaped plates are distributed on the outside of the detection housing.

[0010] Preferably, a pressure plate is fixedly connected to the connecting rod, a connecting spring is fixedly connected to the pressure plate, one end of the connecting spring away from the pressure plate is fixedly connected to the base plate, and the connecting spring is distributed on the outside of the connecting rod.

[0011] Preferably, a slider is fixedly connected to the inner side of the convex plate, a limit bolt is slidably connected to the outer side of the slider, a turntable is fixedly connected to the outer side of the limit bolt, a limit hole is formed on the circumference of the turntable, the slider is distributed inside the limit hole, a return spring is fixedly connected to the slider, the end of the return spring away from the slider is fixedly connected to the inner side of the limit hole, a roller is provided at one end of the convex plate, and the convex plate can contact the C-shaped plate when it is unfolded.

[0012] Preferably, a connecting pipe is fixedly connected to the spray head, a spring tube is connected to the inner side of the connecting pipe, the end of the spring tube away from the connecting pipe is fixedly connected to the drain solenoid valve, the end of the drain solenoid valve away from the spring tube is fixedly connected to a drain pipe, the drain solenoid valve is externally connected to a PLC controller, and the drain pipe passes through the base plate and communicates with the detection housing.

[0013] Preferably, a support rod is fixedly connected to the bottom of the base plate, and a mesh ring is fixedly connected to the end of the support rod away from the base plate. The mesh ring is provided with an inner groove, and the outer diameter of the mesh ring is adapted to the inner diameter of the still water well. When the filter screen moves, it can engage with the inner groove. The mesh ring is provided with a plurality of honeycomb filter holes that are the same as the filter holes of the filter screen.

[0014] A method for monitoring the chemical composition of groundwater, using the aforementioned seismic monitoring device, includes the following steps: S1. Adjust the position of the testing mechanism using the hoisting mechanism; S2. Water from the still well is pumped into the detection housing by a water pump. Then, radon gas in the water is bubbled and released by an air pump. The released radon gas is discharged to the external analysis unit through the detection tube. S3. After the test is completed, turn off the water pump and the test solenoid valve, and turn on the air pump and the drain solenoid valve. At this time, the water in the test housing flows out through the spray head and the flowing water washes the filter screen. S4. During an earthquake, the detection motor runs at high speed, which drives the water pump to run at high speed. At the same time, the air pump runs at high speed, which accelerates the release of radon gas from the water. The high-speed operation of the detection motor drives the filter to close, thereby blocking the upward flow of mud and sand.

[0015] Compared with the prior art, the present invention provides an earthquake monitoring device and a method for monitoring the chemical composition of groundwater, which has the following beneficial effects: 1. In normal operation, the detection motor operates at medium speed, driving a water pump to draw water from the still water well into the detection housing. Then, an air pump supplies air into the detection housing, bubbling the water and releasing radon gas. The released radon gas is discharged through a detection tube to an external analytical apparatus for analysis. After analysis, the water pump is shut off, and the tested water is discharged. New water is then drawn for analysis. During an earthquake, the detection motor operates at high speed, causing a convex plate to drive a filter screen to move. The filter screen is positioned between the water pump's pumping area and the still water well. The system acts as a barrier, protecting the extracted water and continuously updating the detection results. This allows users to monitor the radon levels in the water in real time. The flowing water also prevents the growth of algae and other substances inside the detection housing. Furthermore, during earthquakes, the system filters the water pumped by the pump, preventing sediment from rising from the bottom of the still well and clogging the detection device, which would also affect the radon detection results. During the drainage phase, the pump and detection motor stop operating, thus reducing energy consumption.

[0016] 2. In this invention, during testing, the detection solenoid valve is opened and the drain solenoid valve is closed. Then, the water body is tested by the detection mechanism. After the test is completed, the water pump and detection solenoid valve are closed, and the air pump and drain solenoid valve are opened. At this time, the detection pipeline is closed, and the water body is sprayed out through the spray head. The sprayed water can backwash the filter screen, thereby avoiding the problem of clogging. During the draining process, the air pump is in a continuous operating state, which can pressurize the inside of the detection housing, so that the water body can be quickly discharged from the detection housing. Due to the pressurization, the discharged water body has a certain impact force, thereby improving the removal effect of impurities on the filter screen and thus improving the backwashing effect.

[0017] 3. The present invention, through the setting of the hoisting frame and hoisting mechanism, makes it convenient for users to move the device, and at the same time, the position of the detection mechanism can be adjusted by the operation of the hoisting mechanism, thereby achieving the effect of convenient adjustment of the detection position. Attached Figure Description

[0018] Figure 1 This is a first-view schematic diagram of the present invention; Figure 2 This is a schematic diagram from a second perspective of the present invention; Figure 3 This is a side sectional view of the overall structure of the present invention; Figure 4 This is a third-view schematic diagram of the present invention; Figure 5 This is a partial structural side sectional view of the present invention; Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point A in the middle; Figure 7 This is a schematic diagram of the fourth perspective of the present invention; Figure 8 This is a schematic diagram of the fifth perspective of the present invention; Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point B.

[0019] In the picture: 1. Lifting frame; 2. Lifting mechanism; 21. Fixing frame; 22. Lifting motor; 23. Winding roller; 24. Lifting rope; 25. Base plate; 3. Testing mechanism; 31. Testing motor; 32. Water pump; 321. Inlet pipe; 322. Outlet pipe; 323. Filter cartridge; 33. Air pump; 331. One-way pipe; 34. Testing housing; 35. Testing tube; 351. Testing solenoid valve; 4. Anti-clogging mechanism; 41. Filter screen; 411. Connecting rod; 412. C-plate; 413. Pressure plate; 414. Connecting spring; 42. Spray head; 421. Drain solenoid valve; 422. Bourdon tube; 423. Connecting pipe; 424. Drain pipe; 425. Support rod; 426. Mesh ring; 427. Inner groove; 44. Protruding plate; 441. Slider; 442. Limit bolt; 443. Turntable; 444. Limit hole; 445. Return spring; 446. Roller. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes an earthquake monitoring device and a method for monitoring the chemical composition of groundwater.

[0022] Example 1: Please refer to Figures 1-9 An earthquake monitoring device includes a hoisting frame 1, a hoisting mechanism 2 on the hoisting frame 1, a detection mechanism 3 on the hoisting mechanism 2, the detection mechanism 3 being used to detect radon gas, and the hoisting mechanism 2 being used to hoist the detection mechanism 3. The detection mechanism 3 includes a detection motor 31, a water pump 32, an air pump 33, a detection housing 34, and a detection tube 35. A detection solenoid valve 351 is installed on the detection tube 35. During detection, the detection motor 31 can drive the water pump 32 to operate, thereby drawing water into the detection housing 34. The air pump 33 is used to deliver gas into the detection housing 34, and the detection tube 35 is used to collect and detect the released radon gas. The hoisting mechanism 2 is also equipped with an anti-clogging mechanism 4, which includes a filter screen 41, a spray head 42, and a convex plate 44. The filter screen 41 is used to block impurities. The spray head 42 is equipped with a drain solenoid valve 421. The spray head 42 is connected to the detection housing 34. When the spray head 42 drains water, it can rinse the filter screen 41. The convex plate 44 is used to drive the filter screen 41 to move. The detection motor 31 includes two states: medium speed operation and high speed operation. During the medium-speed phase, the water pump 32 and the air pump 33 operate to release radon gas from the water inside the detection housing 34. The released radon gas can be transported to the external analysis unit through the detection tube 35. When the detection ends, the detection motor 31 is turned off, and the air pump 33 continues to operate. At this time, the water inside the detection housing 34 can be discharged through the spray head 42, and the filter screen 41 is opened. During the high-speed phase, water pump 32 and air pump 33 can operate synchronously at high speed. Similarly, detection mechanism 3 extracts radon gas from the new water body and detects the extracted radon gas through detection tube 35. During the operation of detection mechanism 3, convex plate 44 can drive filter screen 41 to move upward to block impurities in the extracted water body.

[0023] In use, the detection mechanism 3 is slowly lowered to the predetermined depth using the hoisting mechanism 2. During detection, the detection solenoid valve 351 is opened and the drain solenoid valve 421 is closed. Under normal conditions, the detection motor 31 operates at medium speed, thereby driving the water pump 32 to draw water from the still water well into the detection housing 34. Then, air is supplied to the detection housing 34 through the air pump 33, thereby bubbling the water in the detection housing 34 and releasing radon gas from the water. The released radon gas is discharged through the detection tube 35 to the external analysis mechanism for detection and analysis. After the detection is completed, the water pump 32 is turned off and the detection is completed. Solenoid valve 351 opens air pump 33 and drain solenoid valve 421. At this time, detection pipe 35 is closed, and the water in detection housing 34 that has been detected is discharged through spray head 42. The discharged water backwashes filter screen 41, preventing clogging. During drainage, air pump 33 continuously operates, pressurizing the detection housing 34, allowing water to drain quickly. The pressurized water also creates a certain impact force, enhancing the removal of impurities from filter screen 41. To enhance the backwashing effect, after the water is discharged, the detection solenoid valve 351 is reopened and the drain solenoid valve 421 is closed, allowing new water to be drawn for testing. In the event of an earthquake, the detection motor 31 is controlled to operate at high speed. At this time, the convex plate 44 moves, driving the filter screen 41 to move. The filter screen 41 forms a barrier between the water pump 32's pumping area and the still water well, protecting the drawn water and blocking any rising silt or other impurities, thus preventing device clogging. This continuous refresh of the detected water allows users to analyze the radon content in the water each time it is tested. The system provides real-time monitoring of radon levels in the water, and the flowing water prevents the growth of algae and other substances within the detection housing 34. Furthermore, during an earthquake, it filters the water pumped by the pump 32, preventing sediment from rising from the bottom of the still water well and clogging the detection device, which would also affect the radon detection results. During drainage, the filter screen 41 is flushed, preventing clogging. Simultaneously, during drainage, the pump 32 and detection motor 31 stop operating, thus reducing energy consumption.

[0024] Example 2: See Figures 1-9 Unlike the first embodiment described above, the hoisting mechanism 2 includes a fixed frame 21, a hoisting motor 22 is mounted on the fixed frame 21, a take-up roller 23 is mounted on the output shaft of the hoisting motor 22, a hoisting rope 24 is mounted on the take-up roller 23, and a base plate 25 is fixedly connected to one end of the hoisting rope 24 away from the take-up roller 23. The detection motor 31, water pump 32, air pump 33, and detection housing 34 are all mounted on the base plate 25. In use, the hoisting motor 22 drives the winding roller 23 to rotate, the rotation of the winding roller 23 drives the hoisting rope 24 to move, the movement of the hoisting rope 24 drives the base plate 25 to move, and the movement of the base plate 25 drives the detection mechanism 3 and the anti-blocking mechanism 4 to move, thereby achieving the effect of adjusting the position of the detection mechanism 3, and thus achieving the effect of detection at different positions.

[0025] Example 3, see Figures 1-9 Unlike the second embodiment described above, a liquid level sensor is installed inside the detection housing 34, and the liquid level sensor is connected to an external PLC controller. The water pump 32 is equipped with an inlet pipe 321 and an outlet pipe 322. The end of the inlet pipe 321 away from the water pump 32 passes through the bottom plate 25 and is connected to a filter cartridge 323. The end of the outlet pipe 322 away from the water pump 32 is connected to the detection housing 34. The detection motor 31 and the air pump 33 are both connected to an external PLC controller. The air pump 33 can perform medium-speed and high-speed air filling. The air pump 33 is equipped with a one-way pipe 331 and a one-way valve inside the one-way pipe 331. The detection pipe 35 is installed on the detection housing 34 and is distributed at the top of the detection housing 34. The end of the detection solenoid valve 351 away from the detection pipe 35 is connected to an extension pipe, and the extension pipe is connected to an external analysis mechanism. In use, water is pumped from the still water well to the outlet water pipe 32 through the filter cartridge 323 and the inlet pipe 321 by the water pump 32. Then, the water is discharged into the detection housing 34 through the outlet water pipe 322. When the water level in the detection housing 34 reaches the required level, the liquid level sensor can detect it and feed the information back to the PLC controller. At this time, the PLC controller drives the water pump 32 and the detection motor 31 to shut down. Then, the air pump 33 inflates and bubbles into the water through the one-way pipe 331, thereby releasing radon gas from the water. The released radon gas is discharged through the detection pipe 35 to the external analysis mechanism for detection and analysis. When the detection motor 31 is running at high speed, the air pump 33 can run at high speed synchronously, thereby increasing the amount of air added and thus improving the efficiency and effect of radon gas release.

[0026] Example 4, see Figures 1-9Unlike Embodiment 3 described above, the spray head 42 has several angled spray nozzles arranged circumferentially. The spray head 42 is mounted on the filter screen 41, and a connecting rod 411 is fixedly connected to the filter screen 41. The connecting rods 411 are symmetrically distributed, and one end of the connecting rod 411 away from the filter screen 41 passes through the base plate 25 and is fixedly connected to a C-shaped plate 412. The C-shaped plates 412 are distributed on the outside of the detection housing 34. A pressure plate 413 is fixedly connected to the connecting rod 411, and a connecting spring 414 is fixedly connected to the pressure plate 413. One end of the connecting spring 414 away from the pressure plate 413 is fixedly connected to the base plate 25. The connecting springs 414 are distributed on the outer side of the connecting rod 411. A slider 441 is fixedly connected to the inner side of the protrusion plate 44. A limit bolt 442 is slidably connected to the outer side of the slider 441. A turntable 443 is fixedly connected to the outer side of the limit bolt 442. A limit hole 444 is opened on the circumference of the turntable 443. The sliders 441 are distributed on the inner side of the limit hole 444. A return spring 445 is fixedly connected to the slider 441. The end of spring 445 away from slider 441 is fixedly connected to the inside of limiting hole 444. A roller 446 is provided at one end of convex plate 44. When convex plate 44 is unfolded, it can contact C-shaped plate 412. A connecting pipe 423 is fixedly connected to spray head 42. A spring tube 422 is connected to the inside of connecting pipe 423. The end of spring tube 422 away from connecting pipe 423 is fixedly connected to drain solenoid valve 421. The end of drain solenoid valve 421 away from spring tube 422 is fixedly connected to drain pipe 424. The liquid solenoid valve 421 is connected to an external PLC controller. The drain pipe 424 passes through the base plate 25 and connects to the detection housing 34. A support rod 425 is fixedly connected to the bottom of the base plate 25. A mesh ring 426 is fixedly connected to the end of the support rod 425 away from the base plate 25. An inner groove 427 is provided on the mesh ring 426. The outer diameter of the mesh ring 426 is adapted to the inner diameter of the still water well. When the filter screen 41 moves, it can engage with the inner groove 427. Several honeycomb filter holes with the same filter holes as the filter screen 41 are opened on the mesh ring 426. During drainage, the water inside the detection housing 34 flows through the drain pipe 424, the drain solenoid valve 421, into the spring tube 422, and the connecting pipe 423, then into the spray head 42, and is sprayed out through the nozzles on the spray head 42. During the venting phase, the air pump 33 continuously operates, resulting in a certain impact force on the water sprayed from the spray head 42, thus improving the effect and efficiency of removing impurities from the filter screen 41. When the detection motor 31 operates at medium speed, the centrifugal force on the turntable 443 and the convex plate 44 is low. At this time, the convex plate 44 cannot overcome the elastic force of the return spring 445, thus preventing the convex plate 44 from moving. When the detection motor 31 rotates at high speed, the centrifugal force on the convex plate 44 is large. At this time, the centrifugal force on the convex plate 44 can overcome the elastic force of the return spring 445, and the convex plate 44... The slider 441 moves along the limiting bolt 442 and the limiting hole 444. The slider 441 moves and squeezes the reset spring 445. The convex plate 44 moves and drives the roller 446 to move. The convex plate 44 moves and gradually unfolds. At this time, the roller 446 on the convex plate 44 contacts the C-shaped plate 412 and drives the C-shaped plate 412 to move. The C-shaped plate 412 moves and drives the connecting rod 411 to move upward. The connecting rod 411 moves and drives the pressure plate 413 to squeeze the connecting spring 414. The connecting rod 411 moves and drives the filter screen 41 to move upward. After the filter screen 41 moves upward, it engages with the inner groove 427 on the mesh ring 426. At this time, the filter screen 41 and the mesh ring 426 seal the still water well, thereby blocking impurities and preventing the mud and sand at the bottom of the well from affecting the detection mechanism 3. At the same time, when draining the liquid, it can also backflush the filter screen 41.

[0027] It should be noted that in actual use, a diffuse light turbidity detection sensor can be installed at the bottom 10-15M of the base plate 25. It is connected to the PLC controller. When an earthquake occurs and turbidity and silt rise in the still water well, the sensor can detect it and feed the information back to the PLC controller, which facilitates the subsequent control of the PLC controller for subsequent settings and operation. At the same time, the width of the C-shaped plate 412 is greater than the diameter of the turntable 443.

[0028] Example 5: A method for monitoring the chemical composition of groundwater, using the aforementioned seismic monitoring device, includes the following steps: S1. Adjust the position of the detection mechanism 3 using the hoisting mechanism 2; S2. Water in the still well is pumped into the detection housing 34 by water pump 32, and then radon gas in the water is bubbled and released by air pump 33. The released radon gas is discharged to the external analysis unit through detection tube 35. S3. After the test is completed, turn off the water pump 32 and the test solenoid valve 351, and turn on the air pump 33 and the drain solenoid valve 421. At this time, the water in the test housing 34 flows out through the spray head 42 and the flowing water washes the filter screen 41. S4. When an earthquake occurs, the detection motor 31 operates at high speed, thereby driving the water pump 32 to operate at high speed. At the same time, the air pump 33 operates at high speed, thereby accelerating the release of radon gas in the water. The high-speed operation of the detection motor 31 drives the filter screen 41 to close, thereby blocking the upward flow of mud and sand.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An earthquake monitoring device, comprising a hoisting frame, characterized in that: The hoisting frame is equipped with a hoisting mechanism, and the hoisting mechanism is equipped with a detection mechanism. The detection mechanism is used to detect radon gas, and the hoisting mechanism is used to hoist the detection mechanism. The detection mechanism includes a detection motor, a water pump, an air pump, a detection housing, and a detection tube. A detection solenoid valve is installed on the detection tube. During the detection, the detection motor drives the water pump to operate, thereby drawing water into the detection housing. The air pump is used to deliver gas into the detection housing, and the detection tube is used to collect and detect the released radon gas. The hoisting mechanism is also equipped with an anti-clogging mechanism, which includes a filter screen, a spray head, and a convex plate. The filter screen is used to block impurities. The spray head is equipped with a drain solenoid valve. The spray head is connected to the detection housing. When the spray head drains water, it can rinse the filter screen. The convex plate is used to drive the filter screen to move. The detection motor includes two operating states: medium speed and high speed. During the medium-speed phase, the water pump and air pump operate to release radon gas from the water inside the detection housing. The released radon gas can be transported to an external detection mechanism through the detection tube. When the detection ends, the detection motor is turned off, while the air pump continues to operate. At this time, the water inside the detection housing can be discharged through the spray head, and the filter screen is opened. During the high-speed phase, the water pump and air pump can operate synchronously at high speed. Similarly, the detection mechanism extracts radon gas from the new water body and detects the extracted radon gas through the detection tube. During the operation of the detection mechanism, the convex plate can drive the filter screen to move upward to block impurities in the extracted water body.

2. The earthquake monitoring device according to claim 1, characterized in that: The hoisting mechanism includes a fixed frame, on which a hoisting motor is mounted. A take-up roller is mounted on the output shaft of the hoisting motor, and a hoisting rope is mounted on the take-up roller. A base plate is fixedly connected to the end of the hoisting rope away from the take-up roller. The detection motor, water pump, air pump, and detection housing are all mounted on the base plate.

3. The earthquake monitoring device according to claim 2, characterized in that: A liquid level sensor is installed inside the detection housing, and the liquid level sensor is connected to a PLC controller. The water pump is equipped with an inlet pipe and an outlet pipe. The end of the inlet pipe away from the water pump passes through the base plate and is connected to a filter cartridge. The end of the outlet pipe away from the water pump is connected to the detection housing.

4. The earthquake monitoring device according to claim 1, characterized in that: The detection motor and air pump are both externally connected to a PLC controller, and the air pump can perform medium-speed and high-speed air filling. The air pump is equipped with a one-way pipe, and a one-way valve is located inside the one-way pipe. The detection tube is installed on the detection housing and is distributed at the top of the detection housing. The end of the detection solenoid valve away from the detection tube is connected to an extension tube, and the extension tube is externally connected to the analysis mechanism.

5. The earthquake monitoring device according to claim 2, characterized in that: The spray head is provided with several angled spray heads around its circumference. The spray head is installed on the filter screen. A connecting rod is fixedly connected to the filter screen. The connecting rods are symmetrically distributed. The end of the connecting rod away from the filter screen passes through the base plate and is fixedly connected to a C-shaped plate. The C-shaped plates are distributed on the outside of the detection housing.

6. The earthquake monitoring device according to claim 5, characterized in that: A pressure plate is fixedly connected to the connecting rod, and a connecting spring is fixedly connected to the pressure plate. The end of the connecting spring away from the pressure plate is fixedly connected to the base plate, and the connecting spring is distributed on the outside of the connecting rod.

7. An earthquake monitoring device according to claim 6, characterized in that: A slider is fixedly connected to the inner side of the convex plate, a limit bolt is slidably connected to the outer side of the slider, a turntable is fixedly connected to the outer side of the limit bolt, a limit hole is opened on the circumference of the turntable, the slider is distributed inside the limit hole, a return spring is fixedly connected to the slider, the end of the return spring away from the slider is fixedly connected to the inner side of the limit hole, a roller is provided at one end of the convex plate, and the convex plate can contact the C-shaped plate when it is unfolded.

8. The earthquake monitoring device according to claim 7, characterized in that: A connecting pipe is fixedly connected to the spray head, and a spring tube is connected to the inner side of the connecting pipe. The end of the spring tube away from the connecting pipe is fixedly connected to the drain solenoid valve. The end of the drain solenoid valve away from the spring tube is fixedly connected to a drain pipe. The drain solenoid valve is externally connected to a PLC controller. The drain pipe passes through the base plate and communicates with the detection housing.

9. An earthquake monitoring device according to claim 8, characterized in that: A support rod is fixedly connected to the bottom of the base plate, and a mesh ring is fixedly connected to the end of the support rod away from the base plate. The mesh ring is provided with an inner groove, and the outer diameter of the mesh ring is adapted to the inner diameter of the still water well. When the filter screen moves, it can engage with the inner groove. The mesh ring is provided with a number of honeycomb filter holes that are the same as the filter holes of the filter screen.

10. A method for monitoring the chemical composition of groundwater, characterized in that: The method of using the earthquake monitoring device as described in any one of claims 1-9 includes the following steps: S1. Adjust the position of the testing mechanism using the hoisting mechanism; S2. Water from the still well is pumped into the detection housing by a water pump. Then, radon gas in the water is bubbled and released by an air pump. The released radon gas is discharged to the external analysis unit through the detection tube. S3. After the test is completed, turn off the water pump and the test solenoid valve, and turn on the air pump and the drain solenoid valve. At this time, the water in the test housing flows out through the spray head and the flowing water washes the filter screen. S4. During an earthquake, the detection motor runs at high speed, which drives the water pump to run at high speed. At the same time, the air pump runs at high speed, which accelerates the release of radon gas from the water. The high-speed operation of the detection motor drives the filter screen to close, thereby blocking the upward flow of mud and sand.

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