Well water sampling device for abandoned well

Abstract

The utility model provides a well water sampling device for an abandoned well, and belongs to the technical field of abandoned well water sampling. The device comprises a supporting unit, a folding and unfolding unit, a drainage unit and a collecting mechanism. The retracting and releasing unit is rotationally connected to the supporting unit and used for retracting and releasing a water pumping pipe arranged on the retracting and releasing unit; a water pumping port of the drainage unit is connected with one end of the water pumping pipe and used for pumping a water sample, and a water drainage port of the drainage unit is used for draining the water sample; the collecting mechanism is used for collecting water samples discharged by the water pump. According to the device, the sampling depth of well water can be adjusted through the collecting and releasing unit, meanwhile, the drainage unit can guarantee the stability of the drainage direction every time, a drainage pipe is convenient to collect and release, workers do not need to manually control the drainage direction, operation is simpler, and the well water sampling efficiency and the sampling data precision are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of abandoned well water sampling, more particularly, relate to a kind of well water sampling device for abandoned well. BACKGROUND

[0002] Geothermal well refers to artificial well with depth greater than about 250 meters or hot spring well with water temperature greater than 30℃, which can be used for hot spring bathing, medical treatment, greenhouse planting, aquaculture and house heating, etc. Some geothermal wells are not backfilled in time during development and utilization, resulting in serious water level drop and causing the geothermal wells to be unable to operate normally. Some geothermal wells discharge a large amount of waste water during heating process, which has caused negative impact on the environment for a long time, and finally the geothermal wells are shut down and become abandoned wells. In order to meet the needs of geothermal geological research, water samples are generally taken from abandoned geothermal wells, so as to fully utilize the geothermal water samples in abandoned geothermal wells and determine the potential of geothermal resources.

[0003] At present, the traditional water sampling of abandoned geothermal well is troublesome, and the existing well water sampling device mostly adopts extraction or filling. In the filling, only a single sample can be obtained each time, and for multi-depth sampling of well water, the operation is complicated, and the sampling amount is difficult to guarantee. In the extraction, the accuracy of sampling data is difficult to guarantee, and the end of the water extraction pipe needs to be held by the staff. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of well water sampling device for abandoned well, solve the problems of existing well water sampling operation complex, sampling amount is difficult to control, sampling data is inaccurate.

[0005] In order to realize the above-mentioned purpose, the utility model provides a kind of well water sampling device for abandoned well, comprising:

[0006] support unit;

[0007] retracting unit, the retracting unit is rotatably connected to the support unit and is used for retracting and releasing the water extraction pipe arranged on the retracting unit;

[0008] drainage unit, the water extraction port of the drainage unit is connected with one end of the water extraction pipe and is used for extracting water sample, and the water discharge port of the drainage unit is used for discharging water sample;

[0009] collection mechanism, the collection mechanism is used for collecting the water sample discharged by the drainage unit.

[0010] Optionally, the well water sampling device for abandoned well further comprises:

[0011] compression unit, the compression unit is connected with the retracting unit, and is used for compressing gas by rotating the retracting unit;

[0012] The cleaning unit comprises a gas collecting tank, an air inlet of the gas collecting tank is connected with the compression unit and is used for collecting the compressed gas of the compression unit, and an air outlet of the gas collecting tank is connected with a water outlet of the water drainage unit and is used for blowing air to the water outlet of the water drainage unit.

[0013] Optionally, the winding and unwinding unit comprises:

[0014] A driving motor, a housing of the driving motor is fixedly connected with the support unit;

[0015] A rotating shaft, one end of the rotating shaft is connected with an output end of the driving motor, and the other end is rotatably connected with the support unit;

[0016] A winding roller, the winding roller is fixedly connected with the rotating shaft and rotates with the rotating shaft;

[0017] A water pumping pipe, the water pumping pipe is arranged around the winding roller.

[0018] Optionally, the water drainage unit comprises:

[0019] A transition piece, the transition piece is annular, is sealed and rotatably connected with the rotating shaft;

[0020] A water storage cavity, the water storage cavity is arranged at an inner shaft center of the rotating shaft and corresponds to a position of the transition piece;

[0021] A plurality of communication cavities, the plurality of communication cavities are arranged inside the rotating shaft and surround the water storage cavity, one side of the communication cavity is in communication with the water storage cavity, and the other side of the communication cavity is in communication with the outside of the rotating shaft;

[0022] A mounting hole, the mounting hole penetrates through the winding roller and the rotating shaft and is in communication with the water storage cavity, one end of the water pumping pipe is connected with the mounting hole, and the other end of the water pumping pipe is freely hung down;

[0023] A water drainage hole, the water drainage hole is arranged at a bottom of the transition piece and corresponds to a position of the communication cavity;

[0024] A water drainage pipe, the water drainage pipe is fixedly connected on the transition piece and is in communication with the water drainage hole;

[0025] A water pump, a housing of the water pump is fixedly connected with the support unit and is in communication with the water drainage pipe.

[0026] Optionally, the compression unit comprises:

[0027] A reciprocating screw rod, the reciprocating screw rod is fixedly connected with the rotating shaft and rotates with the rotating shaft;

[0028] A cylinder is arranged outside the reciprocating screw rod, a piston plate matched with the reciprocating screw rod is arranged inside the cylinder, the reciprocating screw rod can drive the piston plate to move linearly in the cylinder when the reciprocating screw rod rotates, and an exhaust pipe is connected to an output end of the cylinder.

[0029] Optionally, the cleaning unit comprises:

[0030] A gas collecting tank is fixedly connected to the supporting unit, an air inlet of the gas collecting tank is connected with the exhaust pipe, and an air outlet of the gas collecting tank is connected with the drain pipe.

[0031] Optionally, a sealing ring is fixedly connected to an outer wall of the drain pipe, an installation groove in communication with the drain pipe is arranged in the sealing ring, a sealing plate matched with an inner diameter of the drain pipe is arranged between the installation groove and the drain pipe, a lower end of the sealing plate is hingedly connected to the installation groove and can be flipped into the drain pipe, an elastic member is fixedly connected between the sealing plate and the installation groove, a stop ring is arranged on an inner wall of the drain pipe close to the lower end of the sealing plate, the stop ring is used for limiting the flipping angle of the sealing plate and sealing the flipped sealing plate, the installation groove and the air outlet of the gas collecting tank are connected through a connecting pipe, an electromagnetic valve is arranged on the connecting pipe, and a pressure relief valve is arranged on the gas collecting tank.

[0032] Optionally, the collecting mechanism comprises:

[0033] At least one pair of limiting frames are provided with arc-shaped grooves;

[0034] A rotating disc is annular, an outer side of the rotating disc is arranged in the arc-shaped groove of the limiting frame and can rotate along the arc-shaped groove, an inner side of the rotating disc is provided with an inner tooth ring, and the inner tooth ring is engaged with an incomplete gear;

[0035] A stepping motor is fixedly connected to an output end of the incomplete gear;

[0036] A plurality of collecting pipes are annularly and uniformly arranged on the rotating disc.

[0037] Optionally, a plurality of annular grooves are arranged on the rotating disc, a support is slidably connected in the annular groove, the collecting pipe is arranged on the support, a spring is arranged between the bottom of the annular groove and the support, a contact switch is fixedly arranged at the bottom of the annular groove, a movable rod is fixedly connected below the support, the movable rod corresponds to the position of the contact switch, the contact switch is electrically connected with the water pump, the electromagnetic valve and the stepping motor, when the movable rod triggers the contact switch, the water pump is closed, the electromagnetic valve is opened and the stepping motor is opened, and when the contact switch is not triggered, the water pump is opened, the electromagnetic valve is closed and the stepping motor is closed.

[0038] Specifically, the well water sampling device for abandoned wells can collect the sampled water through a collection mechanism, and can also collect sampled water at different depths at different locations. When a certain amount is collected, the drainage unit is automatically shut off, so that the amount of water sampled each time is the same, which can also reduce the waste of water resources.

[0039] Optionally, the well water sampling device for abandoned wells further includes:

[0040] A limiting plate is fixedly connected to the support unit. A slide block is slidably connected to the limiting plate. The slide block has a through hole. The other end of the water pump pipe passes through the through hole. The other end of the water pump pipe is provided with a counterweight head. The surface of the counterweight head is provided with filter holes.

[0041] The beneficial effects of this utility model are as follows: It provides a well water sampling device for abandoned wells, comprising: a support unit, a retraction unit, a drainage unit, and a collection mechanism; the retraction unit is rotatably connected to the support unit and is used to retract and extend the pumping pipe set on the retraction unit; the pumping port of the drainage unit is connected to one end of the pumping pipe and is used to extract water samples, and the draining port of the drainage unit is used to discharge water samples; the collection mechanism is used to collect water samples discharged by the pump. This device allows for adjustment of the well water sampling depth through the retraction unit, while the drainage unit ensures the stability of the drainage direction each time. It not only facilitates the retraction and extension of the drainage pipe but also eliminates the need for manual control of the drainage direction by personnel, making operation simpler and greatly improving the efficiency and accuracy of well water sampling data.

[0042] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0043] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0044] Figure 1 A schematic diagram of a well water sampling device for abandoned wells according to an embodiment of the present invention is shown.

[0045] Figure 2 A partial structural schematic diagram of a well water sampling device for abandoned wells according to an embodiment of the present invention is shown. Figure 1 .

[0046] Figure 3 A partial cross-sectional view of a well water sampling device for abandoned wells according to an embodiment of the present invention is shown. Figure 1 .

[0047] Figure 4 A side view of the transition piece and rotating shaft in a well water sampling device for abandoned wells according to an embodiment of the present invention is shown.

[0048] Figure 5 A partial cross-sectional view of a well water sampling device for abandoned wells according to an embodiment of the present invention is shown. Figure 2 .

[0049] Figure 6 A partial structural schematic diagram of a well water sampling device for abandoned wells according to an embodiment of the present invention is shown. Figure 2 .

[0050] Figure 7 A cross-sectional schematic diagram of the rotating disc in a well water sampling device for abandoned wells according to an embodiment of the present invention is shown.

[0051] Figure 8 It shows Figure 7 A schematic diagram of part A in the diagram.

[0052] Explanation of reference numerals in the attached figures:

[0053] 1. Base; 2. Bracket; 3. Support rod; 4. Drive motor; 5. Rotary shaft; 6. Take-up roller; 7. Water suction pipe; 8. Transition piece; 9. Mounting hole; 10. Drain pipe; 11. Water storage chamber; 12. Connecting chamber; 13. Drain hole; 14. Water pump; 15. Limiting plate; 16. Slide; 17. Counterweight head; 18. Collection mechanism; 181. Limiting frame; 182. Turntable; 183. Internal gear ring; 184. Support; 18 5. Collection pipe; 186. Annular groove; 187. Spring; 188. Movable rod; 189. Contact switch; 19. Stepper motor; 20. Incomplete gear; 21. Sealing ring; 22. Reciprocating screw; 23. Cylinder; 24. Piston plate; 25. Positioning rod; 26. Exhaust pipe; 27. Gas collection tank; 28. Connecting pipe; 29. ​​Solenoid valve; 30. Mounting groove; 31. Sealing plate; 32. Elastic element; 33. Retaining ring. Detailed Implementation

[0054] This utility model provides a well water sampling device for abandoned wells, comprising:

[0055] Support unit;

[0056] A take-up and release unit is rotatably connected to a support unit and is used to take up and release the water pumping pipe provided on the take-up and release unit.

[0057] The drainage unit has a water inlet connected to one end of a water pipe for drawing water samples, and a water outlet for discharging water samples.

[0058] The collecting mechanism is used for collecting the water sample discharged by the water pump.

[0059] Specifically, the well water sampling device for abandoned wells can adjust the sampling depth of well water through the winding and unwinding unit, and the drainage unit can ensure the stability of the drainage direction each time, which not only facilitates winding and unwinding of the drainage pipe, but also does not need manual control of the drainage direction by the staff, and the operation is more simple, greatly improving the efficiency of well water sampling.

[0060] Optionally, the well water sampling device for abandoned wells further comprises:

[0061] The compression unit is connected with the winding and unwinding unit and is used for compressing gas by rotating the winding and unwinding unit;

[0062] The cleaning unit comprises a gas collection tank, the gas inlet of the gas collection tank is connected with the compression unit and is used for collecting the compressed gas of the compression unit, and the gas outlet of the gas collection tank is connected with the drainage port of the drainage unit and is used for blowing gas to the drainage port of the drainage unit.

[0063] Specifically, the well water sampling device for abandoned wells can drive the compression unit to compress gas through the winding and unwinding unit, and the compressed gas is introduced into the cleaning unit, so as to facilitate subsequent cleaning of the drainage pipe, and when the drainage pipe is cleaned, the end of the drainage pipe can be sealed, thereby improving the cleaning efficiency of the drainage pipe and greatly improving the accuracy of well water sampling data at different depths. It should be explained that the water suction pipe has a certain elasticity, and in addition, when it is wound, the quality of the water suction pipe is relatively light, so when it needs to be partially wound on the winding roller, it will not affect the drainage of well water.

[0064] Optionally, the winding and unwinding unit comprises:

[0065] The housing of the driving motor is fixedly connected to the support unit;

[0066] The rotating shaft is connected to the output end of the driving motor at one end and is rotatably connected to the support unit at the other end;

[0067] The winding roller is fixedly connected to the rotating shaft and rotates with the rotating shaft;

[0068] The water suction pipe is arranged around the winding roller.

[0069] Optionally, the drainage unit comprises:

[0070] The transition piece is annular, sealed and rotatably connected to the rotating shaft;

[0071] The water storage cavity is arranged at the position corresponding to the transition piece inside the rotating shaft;

[0072] a plurality of communication cavities, the plurality of communication cavities are arranged inside the rotating shaft and surround the water storage cavity, one side of the communication cavity is in communication with the water storage cavity, and the other side of the communication cavity is in communication with the outside of the rotating shaft;

[0073] a mounting hole, the mounting hole penetrates the winding roller and the rotating shaft and is in communication with the water storage cavity, one end of the water pump is connected to the mounting hole, and the other end of the water pump freely hangs down;

[0074] a drainage hole, the drainage hole is arranged at the bottom of the transition piece and is in communication with the communication cavity;

[0075] a drainage pipe, the drainage pipe is fixedly connected to the transition piece and is in communication with the drainage hole;

[0076] a water pump, a shell of the water pump is fixedly connected to the support unit and is in communication with the drainage pipe.

[0077] Specifically, the water pump is a water-gas dual-purpose pump, that is, the gas passing through the water pump will not affect the operation of the water pump. In addition, when the gas flows into the outlet end of the water pump, it will drive the water pump to rotate in the opposite direction, and the water in the water pump will flow along the original path. The specific structure can refer to the technical solutions in the prior art, and those skilled in the art can know that the size between the two adjacent communication cavities is smaller than the size of the drainage hole, so as to ensure the normal flow of water.

[0078] Optionally, the compression unit comprises:

[0079] a reciprocating screw rod, the reciprocating screw rod is fixedly connected to the rotating shaft and rotates with the rotating shaft;

[0080] a cylinder, the cylinder is arranged outside the reciprocating screw rod, a piston plate matched with the reciprocating screw rod is slidably arranged in the cylinder, the reciprocating screw rod can drive the piston plate to move linearly in the cylinder when the reciprocating screw rod rotates, and an exhaust pipe is connected to an output end of the cylinder.

[0081] Specifically, the specific structure of the cylinder and the reciprocating screw rod can refer to the technical solutions in the prior art, and those skilled in the art can know that the cylinder usually has an input end and an output end, and both are one-way through. When the piston plate moves in the cylinder, the cylinder can suck in gas through the input end and exhaust gas through the output end.

[0082] Optionally, the cleaning unit comprises:

[0083] a gas collection tank, the gas collection tank is fixedly connected to the support unit, a gas inlet of the gas collection tank is connected to the exhaust pipe, and a gas outlet of the gas collection tank is connected to the drainage pipe.

[0084] Optionally, a sealing ring is fixedly connected to the outer wall of the drain pipe. The sealing ring has an installation groove that communicates with the drain pipe. A sealing plate matching the inner diameter of the drain pipe is provided between the installation groove and the drain pipe. The lower end of the sealing plate is hinged to the installation groove and can be flipped inwards into the drain pipe. An elastic element is fixedly connected between the sealing plate and the installation groove. A retaining ring is provided on the inner wall of the drain pipe near the lower part of the sealing plate. The retaining ring is used to limit the flipping angle of the sealing plate and seal the flipped sealing plate. The installation groove is connected to the gas outlet of the gas collection tank through a connecting pipe. A solenoid valve is provided on the connecting pipe, and a pressure relief valve is provided on the gas collection tank.

[0085] Specifically, both solenoid valves and pressure relief valves are conventional methods in existing technology, so they will not be elaborated on. When gas flows into the drain pipe through the connecting pipe, the high-pressure gas will cause the sealing plate to rotate into the drain pipe. The retaining ring can limit the rotation angle of the sealing plate. At the same time, when the sealing plate contacts the retaining ring, it can seal the output end of the drain pipe, causing the gas to flow in reverse, which has a cleaning effect on the inner wall of the drain pipe and the pumping pipe.

[0086] Optionally, the collecting agencies include:

[0087] At least one pair of limiting frames, the limiting frames being provided with arc grooves;

[0088] The turntable is ring-shaped. The outer side of the turntable is set in the arc-shaped groove of the limiting frame and can rotate along the arc-shaped groove. The inner side of the turntable is provided with an internal gear ring, which meshes with an incomplete gear.

[0089] A stepper motor, the output end of which is fixedly connected to an incomplete gear;

[0090] Multiple collection tubes are arranged in a circular pattern on the turntable.

[0091] Specifically, the number of teeth on the incomplete gear and the number of collection tubes are not limited here. As long as the distance that the turntable rotates when the incomplete gear rotates one revolution is the same as the distance between the two adjacent sets of collection tubes, the collection tubes are located below the drain pipe. The specific structure of the stepper motor can be referred to the technical solutions in the prior art, which will be known to those skilled in the art and will not be described in detail here. By adjusting the electrical pulse signal of the stepper motor, the rotor of the stepper motor can be rotated at a certain angle. This application enables the rotor of the stepper motor to rotate one revolution in a single operation.

[0092] Optionally, a plurality of annular grooves are formed on the rotary disc, a support is slidably connected in the annular grooves, the collecting pipe is arranged on the support, a spring is arranged between the bottom of the annular groove and the support, the bottom of the annular groove is fixedly provided with a contact switch, a movable rod is fixedly connected below the support, the movable rod corresponds to the position of the contact switch, and the contact switch is electrically connected with the water pump, the electromagnetic valve and the stepping motor; when the movable rod triggers the contact switch, the water pump is closed, the electromagnetic valve is opened, and the stepping motor is opened; when the contact switch is not triggered, the water pump is opened, the electromagnetic valve is closed, and the stepping motor is closed.

[0093] Specifically, when the contact switch is triggered, the water pump is closed, the electromagnetic valve is opened, and the stepping motor is opened, which is a conventional means in the prior art, and thus will not be described herein again, wherein the elastic potential energy of the spring can be adjusted according to different sampling amounts, so as to achieve different purposes of sampling different amounts of well water for different geothermal wells or different required amounts of detection.

[0094] Optionally, the well water sampling device for abandoned wells further comprises:

[0095] A limiting plate is fixedly connected to the support unit, a sliding seat is slidably connected to the limiting plate, the sliding seat is provided with a through hole, the other end of the water suction pipe passes through the through hole, and the other end of the water suction pipe is provided with a counterweight head, and the surface of the counterweight head is provided with a filter hole.

[0096] Specifically, the sliding seat and the limiting plate can be slid relative to each other, and can also be self-locked; the counterweight head can facilitate the lowering of the water suction pipe and ensure the stability of the water suction pipe during the lowering; the surface of the counterweight head 17 is provided with a filter hole for the passage of water and the filtration of impurities.

[0097] The well water sampling device can overcome the problems of complex operation, difficult control of sampling amount and low accuracy of sampling data.

[0098] The preferred embodiments of the present application will be described in more detail below. Although the preferred embodiments of the present application are described below, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to convey the scope of the present application to those skilled in the art.

[0099] Embodiment:

[0100] Reference Figures 1-8The embodiment provides a well water sampling device for abandoned well, which comprises a base 1 and a support 2, the base 1 is fixed on the support 2, a plurality of support rods 3 are fixedly connected to the base 1 and are used for supporting on the ground, the support rods 3 can also adopt a height-adjustable structure, so as to be convenient for different terrains, and the well water sampling device further comprises: a winding and unwinding unit arranged on the support 2 and used for adjusting the sampling depth of well water; a drainage unit arranged on the winding and unwinding unit and at least partially communicated with the winding and unwinding unit; a compression unit arranged on the winding and unwinding unit and capable of being driven by the winding and unwinding unit to rotate and used for compressing gas; a cleaning unit arranged on the support 2 and used for cleaning water in the drainage unit and the winding and unwinding unit; and a collecting mechanism 18 arranged on the support 2 and used for collecting sampled water.

[0101] With reference to Figure 1 The winding and unwinding unit comprises a driving motor 4 fixedly connected to the support 2, the support 2 is rotationally connected with a rotating shaft 5 on the side close to the driving motor 4, a winding roller 6 is fixedly connected to the rotating shaft 5, and a water pumping pipe 7 is wound on the winding roller 6. It should be explained that the water pumping pipe 7 has a certain elasticity, and in addition, when the winding roller 6 needs to be partially wound, the quality of the water pumping pipe 7 is relatively light, so that the discharge of well water is not affected.

[0102] With reference to Figures 1-4 The drainage unit comprises a transition piece 8 rotationally connected to the rotating shaft 5, the winding roller 6 and the rotating shaft 5 are provided with mounting holes 9 on the side close to the transition piece 8, the rotating shaft 5 is provided with a water storage cavity 11 on the side close to the transition piece 8, the rotating shaft 5 is provided with a plurality of communication cavities 12 on the side close to the water storage cavity 11, the transition piece 8 is provided with a drainage hole 13 on the side close to the communication cavities 12, the transition piece 8 is fixedly connected with a drainage pipe 10 communicated with the drainage hole 13, the support 2 is fixedly connected with a water pump 14 communicated with the drainage pipe 10, wherein the water storage cavity 11 is located at the axis of the rotating shaft 5, the mounting hole 9 penetrates from the outside of the winding roller 6 to the axis of the rotating shaft 5 and is communicated with the water storage cavity 11, one end of the water pumping pipe 7 is communicated with the mounting hole 9, and the other end of the water pumping pipe 7 is in a free falling state.

[0103] In the embodiment, it should be explained that the water pump 14 adopts a water-gas dual-purpose pump, that is, when the gas passes through the water pump 14, the working of the water pump 14 is not affected, and in addition, when the gas flows into the outlet end of the water pump 14, the water pump 14 is driven to rotate reversely, and the water in the water pump 14 flows along the original route, and the specific structure can refer to the technical solutions in the prior art, and those skilled in the art can know that the size between adjacent two communication cavities 12 is smaller than the size of the drainage hole 13, so as to ensure the normal flow of water.

[0104] With reference to Figure 1 andFigure 3 The compression unit comprises a reciprocating wire rod 22 fixedly connected to the rotating shaft 5, the bracket 2 is fixedly connected with a gas cylinder 23 on one side close to the reciprocating wire rod 22, the gas cylinder 23 is slidably connected with a piston plate 24 matched with the reciprocating wire rod 22 in the inside of the gas cylinder 23, a plurality of positioning rods 25 slidably connected with the piston plate 24 are fixedly connected in the inside of the gas cylinder 23, and the output end of the gas cylinder 23 is communicated with an exhaust pipe 26, wherein the reciprocating wire rod 22 is located between the bracket 2 and the winding roller 6, the reciprocating wire rod 22 is located in the inside of the gas cylinder 23, the outside wall of the piston plate 24 is tightly fitted with the inside wall of the gas cylinder 23, and the piston plate 24 is provided with a protrusion matched with the reciprocating wire rod 22.

[0105] In the embodiment, the specific structure of the gas cylinder 23 and the reciprocating wire rod 22 can refer to the technical solutions in the prior art, and those skilled in the art can know that the gas cylinder 23 generally has an input end and an output end, and both are one-way through, when the piston plate 24 moves in the gas cylinder 23, the gas cylinder 23 can suck in gas through the input end and discharge gas through the output end.

[0106] Referring to Figure 1 and Figure 5 The cleaning unit comprises a gas collecting tank 27 fixedly connected to the bracket 2, the gas collecting tank 27 is communicated with the exhaust pipe 26, the sealing ring 21 is fixedly connected to the drain pipe 10, the connecting pipe 28 is communicated between the sealing ring 21 and the gas collecting tank 27, the electromagnetic valve 29 is arranged on the connecting pipe 28, the mounting groove 30 communicated with the connecting pipe 28 and the drain pipe 10 is arranged in the inside of the sealing ring 21, the sealing plate 31 is rotatably connected in the inside of the mounting groove 30, the elastic member 32 is fixedly connected between the sealing plate 31 and the mounting groove 30, and the blocking ring 33 is fixedly connected to the inner wall of the drain pipe 10 close to the sealing plate 31, wherein the size of the sealing plate 31 is matched with the inner diameter of the drain pipe 10, and the pressure relief valve is arranged on the gas collecting tank 27.

[0107] In the embodiment, the electromagnetic valve 29 and the pressure relief valve are both conventional means in the prior art, so no further description is made, when the gas flows to the inside of the drain pipe 10 through the connecting pipe 28, under the action of high-pressure gas, the sealing plate 31 can be rotated to the inside of the drain pipe 10, the blocking ring 33 can limit the rotation angle of the sealing plate 31, and when the sealing plate 31 contacts with the blocking ring 33, the output end of the drain pipe 10 can be sealed, so that the gas flows reversely, and the drain pipe 10 and the inner wall of the water pumping pipe 7 can be cleaned.

[0108] Referring to Figure 1 , Figure 6 and Figure 7The collecting mechanism 18 comprises a limiting frame 181 fixedly connected to the support 2 in a symmetrical manner, two groups of limiting frames 181 are rotationally connected with a rotating disc 182, a plurality of annular grooves 186 are formed in the rotating disc 182, a support 184 is slidably connected in the annular grooves 186, and a collecting pipe 185 is arranged on the support 184, wherein the limiting frame 181 is arranged in an arc shape, the outer side wall of the rotating disc 182 is fitted with the inner side wall of the limiting frame 181, the rotating disc 182 is a hollow structure, a stepping motor 19 is fixedly connected to the support 2, an incomplete gear 20 is fixedly connected to the output end of the stepping motor 19, and an inner tooth ring 183 engaged with the incomplete gear 20 is fixedly connected to the inner side wall of the rotating disc 182.

[0109] In the embodiment, the number of teeth on the incomplete gear 20 and the number of the collecting pipes 185 are not limited, as long as the incomplete gear 20 can rotate one circle to drive the rotating disc 182 to rotate a distance same as the distance between the adjacent two groups of collecting pipes 185, wherein the collecting pipe 185 is located below the drain pipe 10, the specific structure of the stepping motor 19 can refer to the prior art, and those skilled in the art can know that the rotor of the stepping motor 19 can be rotated by a certain angle by adjusting the electric pulse signal of the stepping motor 19, and the rotor of the stepping motor 19 can rotate one circle in a single operation of the stepping motor 19.

[0110] Referring to Figure 7 and Figure 8 A plurality of springs 187 are fixedly connected between the bottom of the annular groove 186 and the support 184, a contact switch 189 is fixedly connected to the bottom of the annular groove 186, and a movable rod 188 is fixedly connected to the side of the support 184 close to the spring 187, wherein the movable rod 188 and the contact switch 189 are located on the same vertical plane, and the contact switch 189 is electrically connected with the water pump 14, the electromagnetic valve 29 and the stepping motor 19.

[0111] In the embodiment, when the contact switch 189 is triggered, the water pump 14 is turned off, the electromagnetic valve 29 is turned on, and the stepping motor 19 is turned on, which is a conventional means in the prior art, and thus is not described herein. The elastic potential energy of the spring 187 can be adjusted according to different sampling amounts, so as to achieve different purposes of sampling different amounts of well water for different geothermal wells or different detection amounts.

[0112] Referring to Figure 1Further comprising a limiting plate 15 fixedly connected to the base 1, a sliding seat 16 is slidably connected to the limiting plate 15, a through hole matched with the water pumping pipe 7 is formed through the sliding seat 16, the water pumping pipe 7 penetrates through the through hole, and an counterweight head 17 is fixedly connected to the end of the water pumping pipe 7; the sliding seat 16 and the limiting plate 15 can slide and can also be self-locked, on the one hand, the sliding seat 16 and the limiting plate 15 can facilitate the lowering of the water pumping pipe 7, and on the other hand, the sliding seat 16 and the limiting plate 15 can ensure the stability of the water pumping pipe 7 during the lowering; the counterweight head 17 is provided with a small hole on the surface, which is used for the passing of water and filtering of impurities.

[0113] In the specific implementation, first, the drilling equipment is used to drill the plugging part of the well mouth, and the diameter of the drilling is larger than that of the counterweight head 17; then the equipment is moved above the well mouth, the position of the sliding seat 16 is adjusted, the water pumping pipe 7 is located on the same vertical plane as the drilling, the sliding seat 16 is fixed, the counterweight head 17 is placed in the well along the drilling, and the driving motor 4 is started to pay off the water pumping pipe 7 until the counterweight head 17 reaches a certain depth in the well; in the process, the reciprocating screw rod 22 is also rotated, the piston plate 24 continuously compresses the gas in the air cylinder 23, and the gas is introduced into the gas collection tank 27; initially, one of the collection pipes 185 is located below the drain pipe 10, the water pump 14 is started to pump the well water, the water enters the water storage cavity 11 after passing through the water pumping pipe 7, and then flows to the collection pipe 185 through the communication cavity 12, the drain hole 13 and the drain pipe 10; as the well water in the collection pipe 185 increases, the support 184 moves downward, when the collection reaches a certain amount, the movable rod 188 contacts the contact switch 189, at this time, the water pump 14 is turned off, the water in the drain pipe 10 flows into the collection pipe 185 under the action of gravity, the electromagnetic valve 29 is opened, the high-pressure gas in the gas collection tank 27 flows to the drain pipe 10 through the connecting pipe 28, and the sealing plate 31 rotates to one side of the drain pipe 10, at this time, the gas cannot be discharged from the output end of the drain pipe 10, but flows in the opposite direction of the water flow, which cleans the inside of the water pumping pipe 7, so as to sample the well water at different depths, and also ensures the cleanliness of the inside of the water pumping pipe 7 to prevent the water pumping pipe 7 from being corroded; in addition, the stepping motor 19 drives the incomplete gear 20 to rotate one circle, under the action of the inner tooth ring 183, the rotating disc 182 is rotated, so that the collection pipe 185 at the adjacent position is rotated to below the drain pipe 10, so as to sample and collect the well water at different depths.

[0114] The above has described the embodiments of the present application, the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A well water sampling device for abandoned wells, characterized in that, It comprises: a support unit; a winding and unwinding unit, which is rotationally connected to the support unit and is used for winding and unwinding a water suction pipe arranged on the winding and unwinding unit; a drainage unit, a water suction port of which is connected to one end of the water suction pipe and is used for sucking water samples, and a water discharge port of which is used for discharging water samples; a collection mechanism, which is used for collecting water samples discharged by the drainage unit.

2. A well water sampling device for abandoned wells according to claim 1, characterized in that, It also comprises: a compression unit, which is connected to the winding and unwinding unit and is used for compressing gas by rotating the winding and unwinding unit; a cleaning unit, which comprises a gas collection tank, an air inlet of which is connected to the compression unit and is used for collecting gas compressed by the compression unit, and an air outlet of which is connected to the water discharge port of the drainage unit and is used for blowing air to the water discharge port of the drainage unit.

3. A well water sampling device for abandoned wells according to claim 2, characterized in that, The winding and unwinding unit comprises: a drive motor, an outer shell of which is fixedly connected to the support unit; a rotating shaft, one end of which is connected to an output end of the drive motor, and the other end of which is rotationally connected to the support unit; a winding roller, which is fixedly connected to the rotating shaft and rotates with the rotating shaft; a water suction pipe, which is arranged around the winding roller.

4. A well water sampling device for abandoned wells according to claim 3, characterized in that, The drainage unit comprises: a transition piece, which is annular, sealed and rotationally connected to the rotating shaft; a water storage cavity, which is arranged at the inner shaft center of the rotating shaft and corresponds to the position of the transition piece; a plurality of communication cavities, which are arranged inside the rotating shaft and surround the water storage cavity, one side of each of the communication cavities communicates with the water storage cavity, and the other side of each of the communication cavities communicates with the outside of the rotating shaft; a mounting hole, which penetrates through the winding roller and the rotating shaft and communicates with the water storage cavity, one end of the water suction pipe is connected to the mounting hole, and the other end of the water suction pipe freely hangs down; a water discharge hole, which is arranged at the bottom of the transition piece and corresponds to the position of the communication cavity; a water discharge pipe, which is fixedly connected to the transition piece and communicates with the water discharge hole; a water pump, an outer shell of which is fixedly connected to the support unit and communicates with the water discharge pipe.

5. A well water sampling device for abandoned wells according to claim 4, characterized in that, The compression unit comprises: a reciprocating screw rod, which is fixedly connected to the rotating shaft and rotates with the rotating shaft; a gas cylinder, which is arranged outside the reciprocating screw rod, a piston plate matched with the reciprocating screw rod is slidably arranged inside the gas cylinder, the reciprocating screw rod can drive the piston plate to move linearly in the gas cylinder when the reciprocating screw rod rotates, and an exhaust pipe is connected to an output end of the gas cylinder.

6. A well water sampling device for abandoned wells according to claim 5, characterized in that The cleaning unit comprises: a gas collection tank, which is fixedly connected to the support unit, an air inlet of which is connected to the exhaust pipe, and an air outlet of which is connected to the water discharge pipe.

7. The well water sampling device for abandoned wells according to claim 6, characterized in that, The outer wall of the drain pipe is fixedly connected with a sealing ring, an installation groove in communication with the drain pipe is formed in the inside of the sealing ring, a sealing plate matched with the inner diameter of the drain pipe is arranged between the installation groove and the drain pipe, the lower end of the sealing plate is hingedly connected with the installation groove and can be turned inside the drain pipe, an elastic member is fixedly connected between the sealing plate and the installation groove, a stop ring is arranged on the inner wall of the drain pipe near the lower side of the sealing plate, the stop ring is used for limiting the turning angle of the sealing plate and sealing the turned sealing plate, the installation groove and the gas outlet of the gas collecting tank are connected through a connecting pipe, an electromagnetic valve is arranged on the connecting pipe, and a pressure relief valve is arranged on the gas collecting tank.

8. A well water sampling device for abandoned wells according to claim 7, characterized in that, The collecting mechanism comprises: At least one pair of limiting frames, the limiting frames are provided with arc-shaped grooves; A rotating disc, the rotating disc is annular, the outer side of the rotating disc is arranged in the arc-shaped groove of the limiting frame and can rotate along the arc-shaped groove, the inner side of the rotating disc is provided with an inner tooth ring, and the inner tooth ring is engaged with an incomplete gear; A stepping motor, the output end of the stepping motor is fixedly connected with the incomplete gear; A plurality of collecting pipes, the plurality of collecting pipes are circular and uniformly arranged on the rotating disc.

9. The well water sampling device for abandoned wells according to claim 8, characterized in that, A plurality of annular grooves are formed in the rotating disc, supports are slidably connected in the annular grooves, the collecting pipes are arranged on the supports, springs are arranged between the bottoms of the annular grooves and the supports, contact switches are fixedly arranged at the bottoms of the annular grooves, movable rods are fixedly connected below the supports, the movable rods correspond to the positions of the contact switches, the contact switches are electrically connected with the water pump, the electromagnetic valve and the stepping motor, when the movable rods trigger the contact switches, the water pump is closed, the electromagnetic valve is opened and the stepping motor is opened, and when the contact switches are not triggered, the water pump is opened, the electromagnetic valve is closed and the stepping motor is closed.

10. The apparatus for well water sampling of an abandoned well according to claim 1, wherein, Further comprising: A limiting plate fixedly connected to the supporting unit, a sliding seat slidably connected to the limiting plate, the sliding seat being provided with a through hole, the other end of the water suction pipe passing through the through hole, the other end of the water suction pipe being provided with a counterweight head, and the surface of the counterweight head being provided with filter holes.

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