Underground water monitoring well completion backwashing well device

Abstract

The utility model belongs to the technical field of monitoring well washing, and discloses an underground water monitoring well completion backwashing device which comprises a movable base, a well washing mechanism, a waste water collecting system and an effluent treatment system, the well washing mechanism comprises a clear water tank, a conveying assembly and a spray head, the clear water tank is fixedly installed on the movable base, and the conveying assembly is fixedly installed on the movable base. The conveying assembly is used for conveying clear water in the clear water tank into the spray head, the effluent treatment system comprises a settling tank and a filtering tank, liquid in the settling tank can enter the filtering tank after being filtered, and liquid in the filtering tank can enter the clear water tank after being filtered. And the wastewater collecting system is used for conveying wastewater in the well into the settling box. The well flushing device is suitable for the well casing with small water yield, and during well flushing, wastewater can be filtered through the settling box and the filter box, so that well flushing water is recycled, and secondary pollution is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of monitoring well washing, and in particular relates to a well forming and backwashing device for a groundwater monitoring well. Background Art

[0002] The construction of groundwater environment monitoring wells is a necessary means to understand the current status of groundwater pollution, study its migration and transformation laws, and grasp the dynamic changes of water quality. During the drilling process of groundwater monitoring wells, mud wall protection is carried out to prevent the well wall from collapsing. Therefore, the well should be washed immediately after the well pipe is installed to prevent the water outlet holes on the well wall from being blocked. At the same time, the sediment and other sediments generated during the well construction process are cleaned up to make the water pumped out of the groundwater monitoring well clear and transparent, ensuring the accuracy of the monitoring results.

[0003] Among the current well-washing technologies, the air-compressed well-washing method is mostly used. When washing a well, an air pipe and a water pipe connected to an air compressor are inserted into the well together, and air is injected into the well through the air compressor, so that the well water sprays out from the water pipe, thereby completing the well-washing process. This method is suitable for wells with a certain amount of well water in the well pipe and a relatively stable water output. However, it has certain limitations for well-washing wells that have just completed the installation of the well pipe and the water filter holes are still clogged with mud. In addition, in the actual well-washing procedure, the water discharged from the well-washing of groundwater monitoring wells cannot generally be properly disposed of. Unpurified well-washing wastewater with unknown pollution status is usually discharged on site, which poses a risk of secondary pollution of the soil and groundwater.

[0004] Therefore, there is a need for a monitoring well forming and washing device suitable for a well with a small water output from a well pipe and where the water quality is polluted and the well washing wastewater must be collected and treated. Utility Model Content

[0005] The utility model aims to provide a well backwashing device for groundwater monitoring wells, which is suitable for well pipes with small water output. When washing the well, the waste water can be filtered through a sedimentation box and a filter box to achieve recycling of the well washing water and avoid secondary pollution.

[0006] The technical solution adopted by the utility model is a well-forming backwashing device for groundwater monitoring wells, comprising a mobile base, a well-washing mechanism, a wastewater collection system and a water outlet treatment system, wherein the well-washing mechanism comprises a clean water tank, a conveying assembly and a nozzle, the clean water tank is fixedly mounted on the mobile base, the conveying assembly is used to convey the clean water in the clean water tank to the nozzle, the water outlet treatment system comprises a sedimentation tank and a filter tank, the liquid in the sedimentation tank can enter the filter tank after being filtered, the liquid in the filter box can enter the clean water tank after being filtered, and the wastewater collection system is used to convey the wastewater in the well to the sedimentation tank.

[0007] Furthermore, the wastewater collection system includes a tee, a one-way water outlet valve and a diversion hose, the horizontal pipe of the tee is connected to the sedimentation tank, one end of the diversion hose is connected to the horizontal pipe of the tee and the other end extends into the sedimentation tank, and the one-way water outlet valve is installed in the horizontal pipe of the tee.

[0008] Furthermore, the conveying assembly includes a water pump, a connecting pipe and a telescopic pipe, the inlet end of the water pump is connected to the clean water tank, the outlet end of the water pump is connected to the connecting pipe, the connecting pipe enters from the top of the three-way vertical pipe and extends to the bottom end of the three-way vertical pipe, the telescopic pipe is connected to the connecting pipe and is located at the bottom end of the three-way vertical pipe, and the nozzle is connected to the telescopic pipe.

[0009] Furthermore, the nozzle is provided with a layered spraying port.

[0010] Furthermore, a sand discharge port is provided at the bottom of the sedimentation box, and the sedimentation box is separated from the filter box by a baffle and a filter plate.

[0011] Furthermore, the filter box and the clean water tank are separated by a fourth vertical plate, and there is a gap between the fourth vertical plate and the top surface of the filter box.

[0012] Furthermore, a second vertical plate and a third vertical plate are vertically arranged in the filter box, there is a gap between the top surface of the second vertical plate and the top surface inside the filter box, there is a gap between the bottom surface of the third vertical plate and the bottom surface inside the filter box, the top of the second vertical plate is equipped with a first filter screen, and the top of the third vertical plate is equipped with a second filter screen.

[0013] Furthermore, a first drain port and a second drain port are provided at the bottom of the filter box, the first drain port is located below the first filter screen, and the second drain port is located below the second filter screen.

[0014] Furthermore, a third drain outlet is provided at the bottom of the clean water tank.

[0015] Furthermore, moving wheels are installed at the four corners of the moving base.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model can adapt to the well-forming and well-washing work of monitoring wells where the water output of the well pipe is small and the land is polluted and the well-washing wastewater must be collected and treated.

[0018] 2. In the utility model, the wastewater collection system reasonably connects the well washing mechanism, the monitoring well pipe and the effluent treatment system by setting a three-way pipe, so that the well washing wastewater in the monitoring well flows into the sedimentation tank of the effluent treatment system through the horizontal port of the three-way pipe, thereby solving the problem of the well washing wastewater being discharged to the ground in the existing well washing technology, and preventing the secondary pollution caused by the discharge of the well washing wastewater from the monitoring well of the polluted land.

[0019] 3. In the utility model, by combining the design of baffles and filter layers in the water treatment system, the water flow path is effectively lengthened, the water flow dynamics are reduced, and multi-stage filtration is achieved, so that the well washing water can be recycled and used in the well washing work of the same monitoring well, saving water resources while improving the efficiency of the well washing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Explanation of the reference numerals: 1. Well washing mechanism; 11. Water pump; 12. Telescopic pipe; 13. Nozzle; 131. Layered spray nozzle; 2. Wastewater collection system; 21. Adjustable locking joint; 22. Tee pipe; 23. One-way water outlet valve; 24. Connecting pipe; 25. Diversion hose; 3. Water outlet treatment system; 31. Sedimentation box; 311. Baffle; 312. Filter plate; 313. Sand outlet; 32. Filter box; 321. First filter screen; 322. Second vertical plate; 323. Third vertical plate; 324. Second filter screen; 325. Fourth vertical plate; 326. First drain outlet; 327. Second drain outlet; 33. Clean water tank; 331. Third drain outlet; 4. Mobile base; 42. Mobile wheel. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer and more understandable, the technical solution of the utility model will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, a groundwater monitoring well backwashing device provided by the utility model includes a mobile base 4, a well washing mechanism 1, a wastewater collection system 2 and a water outlet treatment system 3. The well washing mechanism 1 includes a clean water tank 33, a conveying component and a nozzle 13. The clean water tank 33 is fixedly installed on the mobile base 4. The conveying component is used to convey the clean water in the clean water tank 33 to the nozzle 13. The water outlet treatment system 3 includes a sedimentation tank 31 and a filter box 32. The liquid in the sedimentation tank 31 can enter the filter box 32 after filtration, and the liquid in the filter box 32 can enter the clean water tank 33 after filtration. The wastewater collection system 2 is used to convey the wastewater in the well to the sedimentation tank 31.

[0024] Moving wheels 42 are installed at the four corners of the mobile base 4 to facilitate the staff to move the device to the monitoring well; when washing the well, the device is moved so that the nozzle 13 extends into the monitoring well, and then the conveying component is started to convey the clean water in the clean water tank 33 to the nozzle 13 for spraying to clean the well.

[0025] The wastewater collection system 2 includes a tee 22, a one-way water outlet valve 23 and a diversion hose 25. The horizontal pipe of the tee 22 is connected to the sedimentation tank 31. One end of the diversion hose 25 is connected to the horizontal pipe of the tee 22 and the other end extends into the sedimentation tank 31. The one-way water outlet valve 23 is installed in the horizontal pipe of the tee 22. The delivery assembly includes a water pump 11, a connecting pipe 24 and a telescopic pipe 12. The inlet end of the water pump 11 is connected to the clean water tank 33. The outlet end of the water pump 11 is connected to the connecting pipe 24. The connecting pipe 24 enters from the top of the vertical pipe of the tee 22 and extends to the bottom of the vertical pipe of the tee 22. The telescopic pipe 12 is connected to the connecting pipe 24 and is located at the bottom of the vertical pipe of the tee 22. The nozzle 13 is connected to the telescopic pipe 12. The nozzle 13 is provided with a layered spraying port 131.

[0026] An adjustable locking joint 21 is provided at the bottom end of the vertical pipe of the tee pipe 22. When washing the well, the device is moved to the monitoring well, and the vertical pipe of the tee pipe 22 is aligned with the well pipe. Then the vertical pipe of the tee pipe 22 and the wellhead of the monitoring well can be fixed by the adjustable locking joint 21, and then the telescopic pipe 12 is adjusted until the nozzle 13 extends to a suitable depth in the well pipe, and then the water pump 11 is started to draw water that meets the well washing requirements from the clean water tank 33 and transport it to the nozzle 13, and then the water is sprayed from the layered spraying port 131 provided on the nozzle 13 to wash the inside of the well pipe.

[0027] The layered spraying port 131 can be provided to flush the sediment in the filter holes of the filter tube in the monitoring well.

[0028] The bottom of the sedimentation box 31 is provided with a sand discharge port 313, and the sedimentation box 31 is separated from the filter box 32 by a baffle 311 and a filter plate 312. The filter box 32 and the clean water box 33 are separated by a fourth vertical plate 325, and there is a gap between the fourth vertical plate 325 and the inner top surface of the filter box 32. The filter box 32 is vertically provided with a second vertical plate 322 and a third vertical plate 323, and there is a gap between the top surface of the second vertical plate 322 and the inner top surface of the filter box 32, and there is a gap between the bottom surface of the third vertical plate 323 and the inner bottom surface of the filter box 32. The top of the second vertical plate 322 is provided with a first filter screen 321, and the top of the third vertical plate 323 is provided with a second filter screen 324. The bottom of the filter box 32 is provided with a first drain port 326 and a second drain port 327, and the first drain port 326 is located below the first filter screen 321, and the second drain port 327 is located below the second filter screen 324. A third drain port 331 is provided at the bottom of the clean water tank 33 .

[0029] During the well washing process, the wastewater generated rises, enters the horizontal pipe of the three-way pipe 22 through the vertical pipe of the three-way pipe 22, enters the diversion hose 25 through the one-way water outlet valve 23, and then enters the sedimentation box 31 from the diversion hose 25. The sedimentation box 31 and the filter box 32 are separated by the baffle 311 and the filter plate 312. Therefore, the wastewater in the sedimentation box 31 will be initially filtered by the filter plate 312 before entering the filter box 32. The wastewater just entering the filter box 32 is in the space formed by the first filter screen 321 and the second vertical plate 322. As the wastewater level increases, the wastewater in the filter box 32 will be discharged. As the water level in the space formed by the second filter screen 324 and the third vertical plate 323 rises, the filtered water will finally flow into the clean water tank 33 from the gap between the fourth vertical plate 325 and the top surface of the filter box 32, thereby achieving filtration, purification and recycling of the waste water.

[0030] After the well washing is completed, in order to avoid cross contamination, it is necessary to clean the sedimentation box 31, and then open the sand discharge port 313 to discharge the silt in the sedimentation box 31 and the waste water after cleaning, and then clean the filter box 32 and the clean water tank 33, and the waste water after cleaning is discharged from the first drain port 326, the second drain port 327 and the third drain port 331.

[0031] In summary, the overall working process of the utility model is as follows: first, the staff moves the device to the vicinity of the monitoring well by moving the base 4, and then adjusts the position of the device so that the vertical pipeline of the three-way pipe 22 is aligned with the well pipe of the monitoring well, and then fixes the vertical pipeline of the three-way pipe 22 to the wellhead of the monitoring well by the adjustable locking joint 21, and then adjusts the telescopic pipe 12 until the nozzle 13 extends to a suitable depth in the well pipe, and then starts the water pump 11 to draw water that meets the requirements of well washing from the clean water tank 33 to clean the inside of the well pipe. The waste water that rises during the cleaning process enters the horizontal pipeline of the three-way pipe 22 through the vertical pipeline of the three-way pipe 22, and then enters the horizontal pipeline of the three-way pipe 22. The water passes through the one-way water outlet valve 23 and the guide hose 25 into the sedimentation box 31, is initially filtered by the filter plate 312, and then enters the filter box 32. After being filtered again by the first filter screen 321 and the second filter screen 324, it flows into the clean water tank 33 from the gap between the fourth vertical plate 325 and the top surface of the filter box 32 to achieve recycling. After cleaning, turn off the water pump 11, retract the telescopic tube 12, loosen the adjustable lock 21 joint, remove the device, and then open the sand discharge port 313 to discharge the sediment in the sedimentation box, and then clean the sedimentation box 31, the filter box 32, and the clean water tank 33 to prepare for the next well washing operation.

[0032] The above description is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical scheme and utility model concept of the utility model, which should be covered by the protection scope of the utility model.

Claims

1. A groundwater monitoring well completion and backwashing well device, characterized in that: It includes a mobile base, a well-washing mechanism, a wastewater collection system and a water outlet treatment system. The well-washing mechanism includes a clean water tank, a conveying component and a nozzle. The clean water tank is fixedly installed on the mobile base. The conveying component is used to convey the clean water in the clean water tank to the nozzle. The water outlet treatment system includes a sedimentation tank and a filter box. The liquid in the sedimentation tank can enter the filter box after filtering, and the liquid in the filter box can enter the clean water tank after filtering. The wastewater collection system is used to convey the wastewater in the well to the sedimentation tank.

2. The groundwater monitoring well completion and backwashing well device according to claim 1 is characterized in that: The wastewater collection system includes a tee, a one-way water outlet valve and a diversion hose. The horizontal pipe of the tee is connected to the sedimentation tank. One end of the diversion hose is connected to the horizontal pipe of the tee and the other end extends into the sedimentation tank. The one-way water outlet valve is installed in the horizontal pipe of the tee.

3. The groundwater monitoring well completion and backwashing well device according to claim 2 is characterized in that: The conveying assembly includes a water pump, a connecting pipe and a telescopic pipe. The inlet end of the water pump is connected to the clean water tank, and the outlet end of the water pump is connected to the connecting pipe. The connecting pipe enters from the top of the vertical pipe of the tee and extends to the bottom end of the vertical pipe of the tee. The telescopic pipe is connected to the connecting pipe and is located at the bottom end of the vertical pipe of the tee, and the nozzle is connected to the telescopic pipe.

4. The groundwater monitoring well completion and backwashing well device according to claim 1, characterized in that: The nozzle is provided with a layered spraying port.

5. The groundwater monitoring well completion and backwashing well device according to claim 1, characterized in that: A sand discharge port is arranged at the bottom of the sedimentation box, and the sedimentation box is separated from the filter box by a baffle and a filter plate.

6. The groundwater monitoring well completion and backwashing well device according to claim 1, characterized in that: The filter box and the clean water box are separated by a fourth vertical plate, and there is a gap between the fourth vertical plate and the top surface of the filter box.

7. The groundwater monitoring well completion and backwashing well device according to claim 1, characterized in that: The filter box is vertically provided with a second vertical plate and a third vertical plate, there is a gap between the top surface of the second vertical plate and the top surface inside the filter box, there is a gap between the bottom surface of the third vertical plate and the bottom surface inside the filter box, the top of the second vertical plate is provided with a first filter screen, and the top of the third vertical plate is provided with a second filter screen.

8. The groundwater monitoring well completion and backwashing well device according to claim 7, characterized in that: The bottom of the filter box is provided with a first drain port and a second drain port, wherein the first drain port is located below the first filter screen, and the second drain port is located below the second filter screen.

9. The groundwater monitoring well completion and backwashing well device according to claim 1, characterized in that: A third drain port is arranged at the bottom of the clean water tank.

10. The groundwater monitoring well completion and backwashing well device according to claim 1, characterized in that: The four corners of the mobile base are all provided with mobile wheels.

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