Geothermal water extraction equipment

Abstract

The present invention relates to the field of open utilization of energy, and in particular to a geothermal water extraction device, a water inlet pipe, an isolation chamber, a submersible pump, a pumping unit and a regulating unit; since the submersible pump in the geothermal water extraction device is immersed in geothermal water for a long time, and the composition of geothermal water is relatively complex, containing various minerals, dissolved gases and microorganisms, etc., which will cause corrosion to the shell of the submersible pump, thereby affecting its service life; and the geothermal water pumping pipeline is set in the geothermal water for a long time, it is easier to grow moss or attach mud and sand in its pipe wall, resulting in a reduction in pipe diameter, thereby affecting the water intake; the submersible pump of the present invention is set at the bottom of the water inlet pipe, and when idle, only the impeller and the water pumping pipe of the submersible pump are immersed in water, and the motor housing of the submersible pump does not contact the geothermal water, in this way, the contact time between the motor housing of the submersible pump and the geothermal water is reduced, so as to reduce the corrosion of the submersible pump housing by minerals and microorganisms in the geothermal water.

Description

Technical Field

[0001] The invention relates to the field of open utilization of energy, and in particular to geothermal water extraction equipment. Background Art

[0002] Geothermal water extraction equipment is a mechanical equipment specially used to extract geothermal water from deep underground. It is mainly composed of three parts: inlet and outlet pipes inserted below the ground, a submersible pump installed at the bottom of the water pipe, and a heat exchange system installed on the ground. When geothermal water needs to be extracted, the geothermal water is transported along the inlet pipe to the heat exchange system through the submersible pump. After a series of filtering and heat exchange treatments, the geothermal water is transported back to the underground along other outlet pipes. Compared with other heating methods, geothermal water extraction equipment is more energy-saving, so it is often used in various scenarios such as tourist hotels, school canteen heating, hot spring wells, etc.

[0003] There are also some problems in the application of geothermal water extraction equipment: since the submersible pump in the geothermal water extraction equipment is immersed in geothermal water for a long time, and the composition of geothermal water is relatively complex, containing various minerals, dissolved gases and microorganisms, etc., it will cause corrosion to the outer shell of the submersible pump, and thus affect its service life; and most geothermal water extraction equipment extracts geothermal water from the same point through a single pipeline. Since it is set underwater, it is easier to grow moss or attach mud to the pipe wall under long-term use, causing the pipe diameter to decrease, which in turn affects the water intake; in addition, when the water demand per unit time is large and the speed of extracting groundwater is greater than the recharge rate of groundwater, a groundwater funnel (that is, a circular low water level surface with the core of the pumping area) will be formed in the unconfined aquifer. In this case, air can easily enter the water pipe, resulting in insufficient water inlet pressure, which in turn leads to a decrease in water flow and cannot meet the demand for hot water. Summary of the invention

[0004] In order to solve the above problems, the present invention adopts the following technical scheme: a geothermal water extraction device, including a water inlet pipe, which is fixedly arranged under the ground, the top of the water inlet pipe is connected to an external heat exchange system, a submersible pump is arranged near the bottom of the water inlet pipe, and the lower end of the water inlet pipe is fixedly connected to an isolation chamber, the isolation chamber and the water inlet pipe are commonly connected to a pumping unit, the lower end of the pumping unit is arranged in the geothermal water, and a regulating unit is also connected in the isolation chamber.

[0005] The pumping unit includes four L-shaped tubes arranged along the circumferential direction, the horizontal sections of the four L-shaped tubes are connected to the lower side wall of the water inlet pipe, the lower ends of the vertical sections of the L-shaped tubes are connected to the connecting tube assembly, the lower end of the connecting tube assembly is connected to a Z-shaped tube, the vertical sections above the Z-shaped tube are penetrated up and down on the isolation bin, and the vertical sections above the Z-shaped tube are connected to the upper and lower walls of the isolation bin through bearings, the connections between the Z-shaped tube and the isolation bin are sealed by a sealing assembly, and the vertical sections above the four Z-shaped tubes are commonly connected to a support assembly at the part below the isolation bin.

[0006] The connecting pipe assembly includes a sleeve, the upper end of which is fixedly connected to the bottom end of the vertical section of the L-shaped pipe, the lower end of which is rotatably connected to the top end of the upper vertical section of the Z-shaped pipe, a short pipe is fixedly connected to the side wall of the sleeve, the other end of the short pipe is connected to the side wall of the water inlet pipe, and a one-way valve is fixedly connected to the short pipe, which only supports water flow from the sleeve to the water inlet pipe.

[0007] Preferably, the sealing assembly includes a sealing cover plate, bolts and nuts, wherein two sealing cover plates are symmetrically arranged above and below the bearing, the two sealing cover plates are rotatably sleeved on the Z-shaped tube, and the two sealing cover plates are fixedly connected by bolts and nuts.

[0008] Preferably, the support assembly includes a support frame and a connecting rod, the support frame is fixedly connected to the isolation chamber through the connecting rod, and the support frame is rotationally connected to the vertical sections above the four Z-shaped tubes.

[0009] Preferably, the adjustment unit includes a mounting plate, a pressing assembly and a linkage assembly, the mounting plate is fixedly arranged in the isolation chamber, the top of the mounting plate is connected to the pressing assembly, the bottom of the mounting plate is connected to the linkage assembly, and the linkage assembly is connected to the vertical section above the Z-shaped tube.

[0010] Preferably, the pressing assembly includes a rotating seat, a rotating module and a hydraulic module. The rotating seat is a cylindrical cavity structure with an opening on the top. The rotating seat is connected to the rotating module on the top. The rotating seat is self-locking by a ratchet and pawl mechanism fixedly connected to the outer wall. The rotating seat is connected to the hydraulic module on the top, and the lower end of the rotating seat is connected to the linkage assembly.

[0011] Preferably, the rotating module includes a T-shaped seat, a corrugated groove, a slider and a return spring, the narrow section of the T-shaped seat is slidingly connected in the rotating seat, the corrugated groove is opened on the inner side wall of the rotating seat, multiple sliders are provided and are evenly fixedly connected to the narrow section of the T-shaped seat along the circumferential direction, multiple sliders are all slidingly connected in the corrugated groove, and the bottom end of the T-shaped seat is fixedly connected to the rotating seat through a return spring.

[0012] Preferably, the hydraulic module includes a cylindrical seat, a liquid storage tube and a piston. An opening is provided at the bottom of the cylindrical seat and is fixedly sleeved on the upper end of the rotating seat. The wide section of the T-shaped seat is slidably connected to the cylindrical seat. The upper end of the cylindrical seat is fixedly connected to the liquid storage tube, which passes through the upper side wall of the isolation chamber and is fixedly connected to the inner side wall of the water inlet pipe. The upper end of the liquid storage tube is arranged above the ground and is slidably connected to the inside of the piston. The upper end of the piston is fixedly connected to the piston rod of an external hydraulic cylinder. The pipeline below the piston in the liquid storage tube and the cavity above the T-shaped seat in the cylindrical seat are filled with hydraulic oil.

[0013] Preferably, the linkage assembly includes a connecting column, a center gear and a driven gear, the connecting column is rotatably connected to the center position of the mounting plate, the top of the connecting column is rotatably connected to the bottom end of the rotating seat, the bottom end of the connecting column is fixedly connected to the center gear, and four driven gears are evenly meshed on the circumference of the center gear, and the four driven gears are fixedly sleeved on four Z-shaped tubes.

[0014] The beneficial effects of the present invention are: 1. The submersible pump of the present invention is arranged at the bottom of the water inlet pipe. When the water intake operation is not carried out, only the impeller and the suction pipe of the submersible pump are immersed in the water, and the motor casing of the submersible pump does not contact the geothermal water. In this way, the contact time between the motor casing of the submersible pump and the geothermal water is reduced, thereby reducing the corrosion of the submersible pump casing by minerals, dissolved gases and microorganisms in the geothermal water.

[0015] 2. The lower end of the water inlet pipe of the present invention is connected to the Z-shaped pipe through the L-shaped pipe and the pipe sleeve, and the bottom end of the Z-shaped pipe is immersed in the geothermal water. Since the diameter of the Z-shaped pipe is smaller than that of the L-shaped pipe, compared with directly taking water through the water inlet pipe and the submersible pump, the flow rate of water in the Z-shaped pipe is faster when taking water in this way, so the impact force is also greater, and moss, i.e., mud and sand are not easy to adhere to the pipe wall, and even if the water flow in a single Z-shaped pipe changes, it will not cause a significant impact on the water flow in the L-shaped pipe.

[0016] 3. The regulating unit of the present invention is provided with a pressing assembly and a linkage assembly. When the water consumption per unit time is large, the manually operated pressing assembly can drive the lower ends of the four Z-shaped tubes to rotate synchronously and move away from each other through the linkage assembly, thereby realizing multi-point water extraction and reducing the influence of the groundwater funnel when extracting water at a single point. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and examples.

[0018] Figure 1 It is a structural schematic diagram of a geothermal water extraction device of the present invention during operation.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the operation of a geothermal water extraction device according to the present invention.

[0020] Figure 3 It is a three-dimensional structural cross-sectional view of a geothermal water extraction device of the present invention from a first viewing angle.

[0021] Figure 4 It is a three-dimensional structural cross-sectional view of a geothermal water extraction device of the present invention from a second viewing angle.

[0022] Figure 5 It is a plan cross-sectional view of a geothermal water extraction device of the present invention.

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the pressing assembly and the central gear of the present invention.

[0024] Figure 7 It is an exploded schematic diagram of the T-shaped seat and the rotating seat of the present invention.

[0025] In the figure: 1. water inlet pipe; 2. isolation chamber; 3. submersible pump; 4. pumping unit; 41. L-shaped pipe; 42. connecting pipe assembly; 421. sleeve; 422. short pipe; 423. one-way valve; 43. Z-shaped pipe; 44. sealing assembly; 441. sealing cover plate; 442. bolt; 443. nut; 45. supporting assembly; 451. supporting frame; 452. connecting rod; 5. adjusting unit; 51. mounting plate; 52. pressing assembly; 521. rotating seat; 522. rotating module; 5221. T-shaped seat; 5222. corrugated groove; 5223. slider; 5224. reset spring; 523. hydraulic module; 5231. columnar seat; 5232. liquid storage pipe; 5233. piston; 53. linkage assembly; 531. connecting column; 532. center gear; 533. driven gear. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

[0027] See also Figure 2 and Figure 5 A geothermal water extraction device comprises a water inlet pipe 1, an isolation chamber 2, a submersible pump 3, a pumping unit 4 and a regulating unit 5. The water inlet pipe 1 is fixedly arranged under the ground, the top of the water inlet pipe 1 is connected to an external heat exchange system, a submersible pump 3 is arranged near the bottom of the water inlet pipe 1, the lower end of the water inlet pipe 1 is fixedly connected to the isolation chamber 2, the isolation chamber 2 and the water inlet pipe 1 are commonly connected to the pumping unit 4, the lower end of the pumping unit 4 is arranged in the geothermal water, and the regulating unit 5 is also connected to the isolation chamber 2.

[0028] During specific operation, when it is necessary to extract geothermal water, start the submersible pump 3, pump the geothermal water upward to the water inlet pipe 1 through the pumping unit 4, and then pump it upward along the water inlet pipe 1 to above the ground. The geothermal water pumped above the ground is first filtered and heat exchanged by the external heat exchange system, and then re-transported to below the ground along the water outlet pipe.

[0029] See also Figure 2 , Figure 3 and Figure 5 The pumping unit 4 includes an L-shaped tube 41, a connecting tube assembly 42, a Z-shaped tube 43, a sealing assembly 44 and a supporting assembly 45. The L-shaped tube 41 is provided with four in the circumferential direction. The horizontal sections of the four L-shaped tubes 41 are connected to the lower side wall of the water inlet pipe 1, and the lower ends of the vertical sections of the L-shaped tube 41 are connected to the connecting tube assembly 42. The lower end of the connecting tube assembly 42 is connected to the Z-shaped tube 43. The vertical section above the Z-shaped tube 43 is penetrated up and down on the isolation chamber 2, and the vertical sections above the Z-shaped tube 43 are connected to the upper and lower walls of the isolation chamber 2 through bearings. The connection between the Z-shaped tube 43 and the isolation chamber 2 is sealed by the sealing assembly 44, and the vertical sections above the four Z-shaped tubes 43 are commonly connected to the supporting assembly 45 at the part below the isolation chamber 2.

[0030] See also Figure 3 and Figure 5 The connecting pipe assembly 42 includes a sleeve 421, a short pipe 422 and a one-way valve 423. The upper end of the sleeve 421 is fixedly connected to the bottom end of the vertical section of the L-shaped pipe 41, and the lower end of the sleeve 421 is rotatably connected to the top of the upper vertical section of the Z-shaped pipe 43. The side wall of the sleeve 421 is fixedly connected with a short pipe 422, and the other end of the short pipe 422 is connected to the side wall of the water inlet pipe 1. The short pipe 422 is fixedly connected with a one-way valve 423 that only supports water flow from the sleeve 421 to the water inlet pipe 1.

[0031] See also Figure 3 The sealing assembly 44 includes a sealing cover plate 441, a bolt 442 and a nut 443. Two sealing cover plates 441 are symmetrically arranged above and below the bearing. The two sealing cover plates 441 are rotatably sleeved on the Z-shaped tube 43, and the two sealing cover plates 441 are fixedly connected by bolts 442 and nuts 443.

[0032] See also Figure 3 The support assembly 45 includes a support frame 451 and a connecting rod 452. The support frame 451 is fixedly connected to the isolation chamber 2 through the connecting rod 452, and the support frame 451 is rotationally connected to the vertical sections above the four Z-shaped tubes 43.

[0033] During specific operation, before each pumping operation, under the sealing of the one-way valve 423, a part of water is stored in the water inlet pipe 1 in the pipeline below the horizontal section of the L-shaped pipe 41. The liquid level of this part of water just covers the suction pipe and impeller of the submersible pump 3, and will not soak the motor casing of the submersible pump 3.

[0034] When it is necessary to extract groundwater, start the submersible pump 3, and transport the water at the bottom of the pipe upward through the submersible pump 3, and then drive the one-way valve 423 to open through the water flow. Under the continuous pumping of the submersible pump 3, the geothermal water can enter the water inlet pipe 1 along the Z-shaped pipe 43, the sleeve 421 and the short pipe 422, and finally enter the external heat exchange system. After the geothermal water is pumped, turn off the submersible pump 3, and the geothermal water in the water inlet pipe 1 falls back under the action of its own gravity, most of which falls back into the groundwater along the L-shaped pipe 41, the sleeve and the Z-shaped pipe 43, and a small part remains at the level of the L-shaped pipe 41 The support frame 451 connecting the four Z-shaped tubes 43 prevents the Z-shaped tube 43 from being affected by the flow of groundwater to prevent it from tilting; at the same time, the diameter of the Z-shaped tube 43 is smaller than the water inlet pipe 1, so the impact force of the water flow in the tube wall is also greater during the water intake process, and moss and mud are not easy to adhere.

[0035] See also Figure 4 and Figure 5 The adjusting unit 5 includes a mounting plate 51, a pressing assembly 52 and a linkage assembly 53. The mounting plate 51 is fixedly arranged in the isolation chamber 2. The pressing assembly 52 is connected to the top of the mounting plate 51, and the linkage assembly 53 is connected to the bottom of the mounting plate 51. The linkage assembly 53 is connected to the vertical section above the Z-shaped tube 43.

[0036] See also Figure 5 and Figure 6 The pressing assembly 52 includes a rotating seat 521, a rotating module 522 and a hydraulic module 523. The rotating seat 521 is a cylindrical cavity structure with an opening on the top. The rotating module 522 is connected to the top of the rotating seat 521. The rotating seat 521 is self-locking by a ratchet and pawl mechanism fixedly connected to the outer wall. The hydraulic module 523 is connected to the top of the rotating seat 521, and the lower end of the rotating seat 521 is connected to the linkage assembly 53.

[0037] During specific operation, when the water consumption per unit time is large, the manually operated hydraulic module 523 drives the rotating module 522 to rotate, and then drives the lower ends of the four Z-shaped tubes 43 to rotate synchronously and move away from each other through the linkage assembly 53, thereby realizing multi-point water extraction and reducing the impact of groundwater funnels.

[0038] See also Figure 6 and Figure 7 The rotating module 522 includes a T-shaped seat 5221, a corrugated groove 5222, a slider 5223 and a return spring 5224. The narrow section of the T-shaped seat 5221 is slidably connected in the rotating seat 521. The corrugated groove 5222 is opened on the inner side wall of the rotating seat 521. The sliders 5223 are provided in plurality and are evenly fixedly connected to the narrow section of the T-shaped seat 5221 along the circumferential direction. The plurality of sliders 5223 are all slidably connected in the corrugated groove 5222. The bottom end of the T-shaped seat 5221 is fixedly connected to the rotating seat 521 through the return spring 5224.

[0039] See also Figure 5 and Figure 6 The hydraulic module 523 includes a cylindrical seat 5231, a liquid storage tube 5232 and a piston 5233. The cylindrical seat 5231 is provided with an opening at the bottom and is fixedly sleeved on the upper end of the rotating seat 521. The wide section of the T-shaped seat 5221 is slidably connected to the cylindrical seat 5231. The upper end of the cylindrical seat 5231 is fixedly connected with a liquid storage tube 5232. The liquid storage tube 5232 passes through the upper side wall of the isolation chamber 2 and is fixedly connected to the inner side wall of the water inlet pipe 1. The upper end of the liquid storage tube 5232 is arranged above the ground and is slidably connected with a piston 5233 inside. The upper end of the piston 5233 is fixedly connected to the piston 5233 rod of the external hydraulic cylinder. The pipeline in the liquid storage tube 5232 below the piston 5233 and the cavity above the T-shaped seat 5221 in the cylindrical seat 5231 are filled with hydraulic oil.

[0040] See also Figure 3 The linkage assembly 53 includes a connecting column 531, a central gear 532 and a driven gear 533. The connecting column 531 is rotatably connected to the center position of the mounting plate 51. The top of the connecting column 531 is rotatably connected to the bottom end of the rotating seat 521. The bottom end of the connecting column 531 is fixedly connected to the central gear 532. Four driven gears 533 are evenly meshed on the circumference of the central gear 532. The four driven gears 533 are fixedly sleeved on four Z-shaped tubes 43.

[0041] During specific operation, when the piston 5233 rod of the hydraulic cylinder pushes the piston 5233 to move downward, the hydraulic oil will push the T-shaped seat 5221 to move downward synchronously. During the downward movement of the T-shaped seat 5221, the slider 5223 will slide along the corrugated groove 5222, thereby driving the rotating seat 521 to rotate a certain angle. When the piston 5233 rod of the hydraulic cylinder drives the piston 5233 to move upward, the T-shaped seat 5221 is also reset under the drive of the reset spring 5224. Therefore, as the piston 5233 rod of the hydraulic cylinder repeatedly moves up and down, the rotating seat 521 will be driven to continue to rotate in the same direction, and then the center gear 532 will be driven to rotate synchronously through the connecting column 531. At the same time, the four driven gears 533 and the vertical sections below the four Z-shaped tubes 43 also rotate synchronously. After the rotation is completed, the position of the rotating seat 521 will be locked by the ratchet pawl mechanism, and the four Z-shaped tubes 43 are also locked synchronously and the vertical sections below are away from each other, thereby realizing multi-point water intake.

[0042] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "oil level", "top", "bottom", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots" and "multiple groups" mean two or more.

[0043] In the description of the present invention, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "set", "connected", "installed" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A geothermal water extraction device, characterized in that: It includes a water inlet pipe, which is fixedly arranged under the ground, the top of which is connected to an external heat exchange system, a submersible pump is arranged at the bottom of the water inlet pipe, the lower end of the water inlet pipe is fixedly connected to an isolation chamber, the isolation chamber and the water inlet pipe are commonly connected to a pumping unit, the lower end of the pumping unit is arranged in geothermal water, and a regulating unit is also connected in the isolation chamber; The pumping unit includes an L-shaped tube, four of which are evenly arranged along the circumferential direction, the horizontal sections of the four L-shaped tubes are all connected to the lower side wall of the water inlet pipe, the lower ends of the vertical sections of the L-shaped tubes are all connected to the connecting tube assembly, the lower end of the connecting tube assembly is connected to a Z-shaped tube, the vertical section above the Z-shaped tube is penetrated up and down on the isolation bin, and the vertical sections above the Z-shaped tube are connected to the upper wall and the lower wall of the isolation bin through bearings, the connection between the Z-shaped tube and the isolation bin is sealed by a sealing assembly, and the vertical sections above the four Z-shaped tubes are commonly connected to a support assembly at the part located below the isolation bin; The connecting pipe assembly includes a sleeve, the upper end of which is fixedly connected to the bottom end of the vertical section of the L-shaped pipe, the lower end of which is rotatably connected to the top end of the vertical section above the Z-shaped pipe, a short pipe is fixedly connected to the side wall of the sleeve, the other end of which is connected to the side wall of the water inlet pipe, and a one-way valve that only supports water flow from the sleeve to the water inlet pipe is fixedly connected to the short pipe; The adjusting unit includes a mounting plate, a pressing assembly and a linkage assembly. The pressing assembly includes a rotating seat, a rotating module and a hydraulic module are connected to the upper portion of the rotating seat, and the lower end of the rotating seat is connected to the linkage assembly. The linkage assembly includes a connecting column, a central gear and a driven gear. The connecting column is rotatably connected to the center position of the mounting plate. The top end of the connecting column is fixedly connected to the bottom end of the rotating seat. The bottom end of the connecting column is fixedly connected to the central gear. The peripheral side of the central gear is evenly meshed with four driven gears. The four driven gears are fixedly sleeved on four Z-shaped tubes. The operating pressing assembly can drive the lower ends of the four Z-shaped tubes to rotate synchronously and move away from each other through the linkage assembly, so as to carry out multi-point water collection.

2. A geothermal water extraction device according to claim 1, characterized in that: The sealing assembly includes a sealing cover plate, bolts and nuts. Two sealing cover plates are symmetrically arranged above and below the bearing. The two sealing cover plates are rotatably sleeved on the Z-shaped tube and are fixedly connected by bolts and nuts.

3. A geothermal water extraction device according to claim 1, characterized in that: The support assembly includes a support frame and a connecting rod. The support frame is fixedly connected to the isolation chamber through the connecting rod, and the support frame is rotationally connected to the vertical sections above the four Z-shaped tubes.

4. A geothermal water extraction device according to claim 1, characterized in that: The mounting plate is fixedly arranged in the isolation chamber, a pressing assembly is connected to the top of the mounting plate, a linkage assembly is connected to the bottom of the mounting plate, and the linkage assembly is connected to the vertical section above the Z-shaped tube.

5. A geothermal water extraction device according to claim 4, characterized in that: The rotating seat is a cylindrical cavity structure with an opening on the top, and the rotating seat is self-locking through a ratchet pawl mechanism fixedly connected to the outer wall.

6. A geothermal water extraction device according to claim 5, characterized in that: The rotating module includes a T-shaped seat, a corrugated groove, a slider and a reset spring. The narrow section of the T-shaped seat is slidably connected in the rotating seat. The corrugated groove is opened on the inner side wall of the rotating seat. There are multiple sliders and they are evenly fixedly connected to the narrow section of the T-shaped seat along the circumferential direction. The multiple sliders are all slidably connected in the corrugated groove. The bottom end of the T-shaped seat is fixedly connected to the rotating seat through a reset spring.

7. A geothermal water extraction device according to claim 6, characterized in that: The hydraulic module includes a cylindrical seat, a liquid storage tube and a piston. An opening is provided at the bottom of the cylindrical seat and is fixedly sleeved on the upper end of the rotating seat. The wide section of the T-shaped seat is slidably connected to the cylindrical seat. The upper end of the cylindrical seat is fixedly connected to the liquid storage tube. The liquid storage tube passes through the upper side wall of the isolation chamber and is fixedly connected to the inner side wall of the water inlet pipe. The upper end of the liquid storage tube is arranged above the ground and is slidably connected to the inside of the piston. The upper end of the piston is fixedly connected to the piston rod of the external hydraulic cylinder. The pipeline below the piston in the liquid storage tube and the cavity above the T-shaped seat in the cylindrical seat are filled with hydraulic oil.

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