CN220852655U - Geothermal mining and irrigation equipment - Google Patents

Abstract

The utility model discloses geothermal irrigation equipment, which comprises a recharging mechanism and an acquisition assembly, wherein the acquisition assembly comprises a filtering mechanism and a water intake pipe, the bottom port of the water intake pipe is inserted into geothermal water in a geothermal well, and the top port of the water intake pipe is connected with the filtering mechanism; the filtering mechanism comprises a second water passing pipe and a first water passing pipe, a filter plate is arranged in the second water passing pipe and the first water passing pipe, the top port of the first water passing pipe is connected with a water suction pump, a first connector is arranged on the first water passing pipe, a second connector and a third connector are arranged on the second water passing pipe, the second water receiving port is communicated with the first connector, and the third connector is communicated with the top port of the water intake pipe. The geothermal water is filtered through the filter plate in the second water passing pipe, and then the filtered geothermal water is further filtered in the first water passing pipe, so that the sand content in the geothermal water is reduced, the geothermal water containing sand is prevented from entering external equipment such as an external water suction pump, the integrity of the equipment is protected, and the set service life is prolonged.

Description

Geothermal mining and irrigation equipment

Technical Field

The utility model relates to the technical field of geothermal exploitation equipment, in particular to geothermal exploitation and irrigation equipment.

Background

Geothermal is a heat resource in the earth, which can be economically utilized by human beings, is higher in the lower layer of the geothermal temperature in the middle and deep layers, can be used for power generation, house heating and the like, is clean and can be repeatedly utilized compared with energy sources such as fire coal, petroleum and the like, and belongs to renewable resources; in the geothermal exploitation process, in order to prevent the ground water level from being reduced, a blank zone appears in the ground, and geological settlement of the zone is easy to cause; therefore, recharging is needed while the geothermal water is collected, and the used hot water is refilled into the groundwater layer, so that the regeneration performance of the geothermal water is improved, and geothermal water resources are reused.

At present, in the geothermal water exploitation process, the used irrigation equipment can irrigate geothermal water and recharge the used geothermal water into a geothermal well; as in the patent document with publication number CN217636242U, a water intake recharging integrated geothermal collection device is disclosed, the device comprises a plugging device and a sleeve body, the sleeve body is placed in a geothermal well, the plugging device is positioned at the wellhead of the geothermal well; the plugging device comprises an outer shell and a recharging pipe, and a water intake is arranged on the side wall of the outer shell; the sleeve body is connected with the lower end of the plugging device, the sleeve body is of a double-layer structure, the inner layer of the sleeve body is an injection pipe, the outer layer of the sleeve body is a water intake pipe, the upper end of the injection pipe is communicated with the lower end of the recharging pipe, and the water intake pipe is communicated with the water intake cavity. The equipment can utilize one well to realize water production and recharging simultaneously, so that geothermal resources can be continuously developed; but has the following disadvantages: because the geothermal water in the geothermal well contains sand, when the geothermal water is taken, corresponding filtering equipment is not arranged in the equipment, and because the content of the sand in the geothermal water is high, the geothermal water and the sand in the geothermal water can enter the water taking cavity through the water taking pipe, then enter the external equipment through the water pipe connected with the water taking port, and the pipeline in the equipment is blocked, so that after the geothermal water is used for a period of time, sand is required to be removed from the equipment, and the exploitation cost of the geothermal water is increased.

Disclosure of utility model

The utility model mainly aims to provide geothermal mining and filling equipment, which solves the problem that the geothermal water taking and recharging equipment mentioned in the background art cannot filter sand in the collected geothermal water.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the geothermal mining and irrigation equipment comprises a recharging mechanism and an acquisition assembly, wherein the inside of the acquisition assembly is connected with the recharging mechanism through a connecting mechanism;

The collecting assembly comprises a filtering mechanism and a water intake pipe, wherein the bottom port of the water intake pipe is inserted into geothermal water in the geothermal well, the top port of the water intake pipe is connected with the filtering mechanism, the filtering mechanism is used for filtering sand in the geothermal water, and the top of the filtering mechanism is externally connected with a water suction pump;

the filter mechanism comprises a second water passing pipe and a first water passing pipe, the second water passing pipe and the first water passing pipe are connected with the connecting mechanism, and filter plates are arranged in the second water passing pipe and the first water passing pipe;

The second water pipe with first water pipe bottom port connection has sand discharging mechanism, first water pipe top port connection the suction pump, be provided with first interface on the first water pipe lateral wall, be provided with second interface and third interface on the second water pipe lateral wall, the second interface is located the third interface top, the second water receiving mouth with first interface intercommunication, the third interface with water intake pipe top port intercommunication.

Further, the recharging mechanism comprises a connecting sleeve and a connecting table, the connecting table is arranged at the top end of the connecting sleeve, a mounting hole is formed in the connecting table in a penetrating manner, the mounting hole is used for communicating the upper part of the connecting table 11 with the inside of the connecting sleeve, the first water passing pipe and the second water passing pipe are arranged in the connecting sleeve, and the top end of the first water passing pipe penetrates through the mounting hole and extends out of the connecting table;

the connecting sleeve is characterized in that a recharging ring groove is formed in the bottom surface of the connecting sleeve, a backwater storage cavity is formed in the connecting table, a water inlet pipe is arranged outside the connecting table, the backwater storage cavity is communicated with the recharging ring groove and the water inlet pipe, and a valve is connected to the water inlet pipe.

Further, a fixing ring is connected between the mounting hole and the first water passing pipe, and the upper surface of the fixing ring is flush with the upper surface of the connecting table.

Further, the sand discharging mechanism comprises a sliding plate and a connecting plate, the sliding plate is slidably mounted in the connecting sleeve and is located above the second water passing pipe, the sliding plate is connected with the connecting plate through a connecting rod, the connecting plate is respectively mounted on the first water passing pipe and the bottom port of the second water passing pipe, a guide rod is connected to the sliding plate, a guide sleeve is arranged in the connecting table, the guide rod penetrates through the guide sleeve to extend out of the connecting table, and an adjusting mechanism is arranged at the position, located above the connecting table, of the guide rod.

Further, the adjusting mechanism is a rotary sleeve, a connecting ring table is arranged on the upper surface of the connecting table at a position corresponding to the outer end head of the guide rod, the rotary sleeve is rotatably arranged in the connecting ring table, and the rotary sleeve is sleeved on the guide rod and is connected with the guide rod through threads.

Further, the connecting mechanism comprises a first rib plate and a second rib plate;

One end of the second rib plate is connected with the outer wall of the first water passing pipe, the other end of the second rib plate is connected with the inner wall of the mounting hole, and the second rib plate is positioned above the sliding plate;

One end of the first rib plate is connected with the inner wall of the connecting sleeve, the other end of the first rib plate is connected with the outer wall of the water intake pipe, and the first rib plate is positioned below the second water passing pipe.

Further, a limiting table is arranged on the end face of the bottom of the connecting table.

Compared with the prior art, the utility model has the following beneficial effects:

1. The geothermal water that gathers the water intake pipe is filtered through the filter in the second water pipe in this equipment, then in letting in first water pipe with filterable geothermal water, the filter further filters the sand in the geothermal water in the first water pipe, reduces the content of sand in the geothermal water, avoids the geothermal water that contains sand to get into in external equipment such as external suction pump, protection equipment's integrality, the life of extension setting.

2. The geothermal water in the geothermal well is collected through the water intake pipe, the used geothermal water is introduced into the backwater storage cavity and then is recharged into the geothermal well through the recharging ring groove, so that water collection and recharging are realized at the same time at one wellhead, geothermal resources can be continuously developed, in the exploitation process, the water intake pipe and the filtering mechanism above the water intake pipe are positioned in the hanging arrangement and the connecting sleeve or the mounting hole, and further the loss of geothermal water energy is reduced.

3. The fixed ring is arranged between the mounting hole and the first water passing pipe, and is used for fixing the position of the first water passing pipe in the mounting hole, and meanwhile, the upper port of the mounting hole is plugged, so that sand and stone outside the geothermal well are prevented from entering the geothermal well, and the exploitation of geothermal water in the geothermal well is prevented from being influenced.

The sand discharging mechanism is arranged at the bottoms of the second water passing pipe and the first water passing pipe, so that sand accumulated at the bottoms of the second water passing pipe and the first water passing pipe can be discharged by the sand discharging mechanism, and the use of the equipment is prevented from being influenced by too much sand collection.

4. Be provided with spacing platform on the bottom terminal surface of connection platform in this equipment, when equipment lay in the geothermal well, through burying spacing platform in the soil that is located geothermal well head avris, and then spacing the connection platform, and then the position of fixed equipment increases the stability of use.

Drawings

FIG. 1 is a schematic diagram of a geothermal mining and irrigation apparatus;

FIG. 2 is a front cross-sectional view of a geothermal mining and irrigation facility;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 2;

FIG. 5 is a schematic illustration of the connection of the filter mechanism to the water inlet pipe in a geothermal mining and irrigation facility;

Fig. 6 is an end view schematic of a recharging mechanism in a geothermal mining and irrigation facility.

In the figure: 1. a recharging mechanism; 10. connecting sleeves; 11. a connection station; 12. recharging the ring groove; 13. a backwater storage cavity; 14. a guide sleeve; 15. a connecting ring table; 16. a mounting hole; 17. a water inlet pipe; 18. a support bar; 2. a filtering mechanism; 20. a first water pipe; 21. a second water pipe; 22. a filter plate; 23. a water intake pipe; 24. a guide groove; 3. a sand discharging mechanism; 30. a rotating sleeve; 31. a connecting rod; 32. a connecting plate; 33. a slide plate; 34. a guide rod; 4. a first rib plate; 5. a second rib plate; 6. a limiting table; 7. a fixing ring; 8. and (3) a valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the embodiment discloses a geothermal mining and irrigation device, the device comprises a recharging mechanism 1 and an acquisition component, the inside of the acquisition component is connected with the recharging mechanism 1 through a connecting mechanism, the recharging mechanism 1 is installed in a geothermal well, a bottom port is inserted into geothermal water, meanwhile, the bottom port of the acquisition component is also inserted into geothermal water, the depth of the bottom port inserted into the geothermal water is smaller than that of the recharging mechanism 1, the geothermal water is acquired through the acquisition mechanism, the geothermal water is guided to the ground surface from the geothermal well, then the geothermal water is guided and used through an external device, and finally the used geothermal water is recharged into the geothermal well through the recharging mechanism 1, so that the acquisition and recharging of the geothermal water can be realized by the same wellhead, and the geothermal resource can be continuously developed;

Referring to fig. 1, 2 and 6, the recharging mechanism 1 comprises a connecting sleeve 10 and a connecting table 11, the connecting table 11 is arranged at the top end of the connecting sleeve 10, the bottom end face of the connecting table 11 is fixedly connected with the bottom end face of the connecting sleeve 10 in a welding mode, a mounting hole 16 is vertically formed in the upper surface of the connecting table 11 and located at the center of the connecting table, the bottom port of the mounting hole 16 is communicated with the bottom port of the connecting sleeve 10, the collecting mechanism is arranged in the connecting sleeve 10 and the mounting hole 16 through the connecting mechanism, and the upper end head of the collecting assembly upwards penetrates through the mounting hole 16 to extend out of the upper part of the connecting table 11 and is externally connected with a water suction pump;

An annular backwater storage cavity 13 is arranged in the connecting table 11 around a mounting hole 16, a water inlet pipe 17 is transversely arranged on the outer wall of the connecting table 11, the water inlet pipe 17 is communicated with the backwater storage cavity 13, geothermal well recharging water is introduced into the backwater storage cavity 13 through the water inlet pipe 17, a recharging ring groove 12 is vertically arranged on the bottom surface of the connecting sleeve 10, the recharging ring groove 12 is communicated with the backwater storage cavity 13, and therefore recharging water in the backwater storage cavity 13 enters a geothermal well through the recharging ring groove 12 to recharge the geothermal well; the water inlet pipe 17 is connected with a valve 8, and the valve 8 controls the speed of recharging water in the backwater storage cavity 13 and controls the closing and the communication of the water inlet pipe 17.

Preferably, the support bars 18 are arranged in the recharging ring groove 12 along the axial direction, so that the service life of the connecting sleeve 10 is prolonged, and the strength of the integral structure of the connecting sleeve 10 after the recharging ring groove 12 is opened is improved.

Referring to fig. 1, 2 and 5, the collecting assembly comprises a filtering mechanism 2 and a water intake pipe 23, and the filtering mechanism 2 and the water intake pipe 23 are installed in the connecting sleeve 10 and the mounting hole 16 through a connecting mechanism; the water intake pipe 23 is arranged along the axial direction of the connecting sleeve 10 and is positioned below the filtering mechanism 2, and the upper end port of the water intake pipe 23 is in a closed state at the center position of the connecting sleeve 10, fourth interfaces are arranged on the outer wall of the water intake pipe and near the bottom of the water intake pipe, the fourth interfaces are arranged along the radial direction of the water intake pipe 23, four fourth interfaces are arranged, and the four fourth interfaces are uniformly distributed around the circumference of the water intake pipe 23; in the use process of the equipment, the connecting sleeve 10 and the bottom port of the water intake pipe 23 are inserted into geothermal water in a geothermal well, the fourth interface on the top of the water intake pipe 23 is connected with the filtering mechanism 2, and the filtering mechanism 2 is used for filtering sand in the geothermal water guided by the water intake pipe 23, so that the sand in the geothermal water is retained in the filtering mechanism 2, the sand content in the geothermal water is reduced, and the geothermal water with larger sand content is prevented from entering an external device connected with the equipment to cause the blockage of the external device or damage the external device; the top of the filtering mechanism 2 is externally connected with a water suction pump which provides power for the equipment to guide the geothermal water in the geothermal well to the ground surface.

Referring to fig. 2 to 5, the filtering mechanism 2 includes four second water passing pipes 21 and one first water passing pipe 20, the second water passing pipes 21 and the first water passing pipe 20 are installed in the connecting sleeve 10, the first water passing pipe 20 is located at the center of the connecting sleeve 10 and the installation hole 16, and is installed along the axial direction of the connecting sleeve 10 and above the water intake pipe 23, and the four second water passing pipes 21 are also installed in the connecting sleeve 10 and are arranged around the circumference of the first water passing pipe 20; the second water passing pipe 21 is connected with the outer wall of the first water passing pipe 20 by a connecting mechanism, the second water passing pipe 21 and the first water passing pipe 20 are fixed in the connecting sleeve 10, and the upper end head of the first water passing pipe 20 passes through the mounting hole 16 and extends out of the connecting table 11;

The position on the outer wall of first water pipe 20 near its bottom terminal surface is provided with first interface, first interface is along the radial setting of first water pipe 20, and be provided with four, four first interfaces are around the circumference setting of first water pipe 20, be provided with second interface and third interface on the outer wall of every second water pipe 21, second interface and third interface all are along the radial setting of second water pipe 21, the second interface that sets up on the second water pipe 21 is located the top of third interface, and be close to the top end of second water pipe 21, second interface and a first interface intercommunication, make the geothermal water in the second water pipe 21 gush into first water pipe 20, the third interface on the second water pipe 21 and a fourth interface intercommunication on the water intake pipe 23, and then guide the geothermal water in the water intake pipe 23 into second water pipe 21, then guide first water pipe 20, finally follow the upper end of first water pipe 20 and draw forth, supply and use.

A filter plate 22 is arranged in the first water passing pipe 20, and the filter plate 22 is positioned above the first connector; a filter plate 22 is arranged in the second water passing pipe 21, the filter plate 22 is positioned between the second connector and the third connector, and the filter plate 22 is used for filtering geothermal water which is introduced into the first water passing pipe 20 and the second water passing pipe 21 and filtering sand in the geothermal water; and the center of each filter plate 22 is convex upwards, namely the center of the upper surface is convex to form a radian surface with high center and bottom at the side, the outside of the sand leakage groove penetrates through the side of the filter plate 22, when the equipment stops collecting geothermal water, sand filtered by the filter plates 22 on the first water passing pipe 20 and the second water passing pipe 21 slides along the inner wall of the first water passing pipe 20 (or the second water passing pipe 21), and finally is accumulated at the bottom positions of the first water passing pipe 20 and the second water passing pipe 21.

The upper end port of the first water passing pipe 20 is externally connected with a water suction pump, the bottom end ports of the first water passing pipe 20 and the second water passing pipe 21 are connected with a sand discharging mechanism 3, and the sand discharging mechanism 3 is used for discharging sand accumulated at the bottoms of the second water passing pipe 21 and the first water passing pipe 20;

Referring to fig. 2-6, the sand discharging mechanism 3 comprises a sliding plate 33 and a connecting plate 32, wherein the connecting plate 32 and the sliding plate 33 are slidably installed in the connecting sleeve 10, slide along the axial direction of the connecting sleeve 10, the sliding plate 33 is positioned above the second water passing pipe 21, a connecting rod 31 is arranged on the bottom surface of the sliding plate 33, the connecting rod 31 is vertically arranged, the sliding plate 33 is connected with the connecting plate 32 through the connecting rod 31, the connecting plate 32 is driven to move in the connecting sleeve 10 through the connecting rod 31, the connecting plate 32 is installed on bottom ports of the first water passing pipe 20 and the second water passing pipe 21, when the equipment collects geothermal water in a geothermal well, the connecting plate 32 is used for plugging the bottom ports of the first water passing pipe 20 and the second water passing pipe 21, a guide groove 24 is arranged on the outer wall of the first water passing pipe 20 and the second water passing pipe 21 corresponding to the position of the connecting rod 31, the guide groove 24 is arranged along the axial direction of the first water passing pipe 20 and the second water passing pipe 21, the horizontal section of the guide groove 24 is arc-shaped, and the connecting rod 31 is slidably installed in the guide groove 24, and the connecting rod 31 is prevented from affecting the bottom ports of the connecting sleeve 21 in the connecting sleeve 10; the upper surface of the sliding plate 33 is vertically connected with a guide rod 34, a guide sleeve 14 is vertically arranged in the connecting table 11, two ends of the guide sleeve 14 penetrate through the top end surface and the bottom end surface of the connecting table 11, the upper end head of the guide rod 34 penetrates through the guide sleeve 14 from bottom to top and extends out of the connecting table 11, an adjusting mechanism is arranged at a position, above the connecting table 11, on the guide rod 34, of the sliding plate 33, the adjusting mechanism is used for adjusting the position of the sliding plate 33, the sliding plate 33 can slide in the connecting sleeve 10, the connecting plate 32 is driven to move, and accumulated sand at the bottoms of the first water passing pipe 20 and the second water passing pipe 21 is discharged.

The adjusting mechanism is a rotary sleeve 30, a connecting ring table 15 is arranged at the upper surface of the connecting table 11 corresponding to the upper end of the guide rod 34, the rotary sleeve 30 is rotationally installed on the connecting ring table 15, the rotary sleeve 30 is sleeved on the upper end of the guide rod 34, external threads are arranged on the outer wall of the guide rod 34 and close to the upper end, internal threads are arranged on the inner wall of the rotary sleeve 30, the rotary sleeve 30 is connected with the guide rod 34 through threads, and then the sliding plate 33 drives the connecting plate 32 to be far away from the bottom end surfaces of the first water passing pipe 20 and the second water passing pipe 21 through rotating the rotary sleeve 30, sand is discharged, or the bottom end surfaces of the first water passing pipe 20 and the second water passing pipe 21 are plugged, and the tightness of the first water passing pipe 20 and the second water passing pipe 21 is guaranteed.

Optimally, a conical protruding table is arranged on the upper end surface of the connecting plate 32 at the central position of the connecting plate, when the equipment does not collect geothermal water, the upper end surface of the connecting plate 32 is separated from the bottom end surface of the first water passing pipe 20 or the second water passing pipe 21 through the sliding slide plate 33, and sand piled up at the bottom position of the first water passing pipe 20 and the second water passing pipe 21 can slide off the connecting plate 32 through the protruding table on the connecting plate 32, so that sand discharge is convenient.

Referring to fig. 1, 2 and 6, a limiting table 6 is vertically arranged at a position, located at the side of a connecting sleeve 10, on the end face of the bottom of a connecting table 11, at least two limiting tables 6 are arranged, when equipment is placed in a geothermal well, the connecting table 11 is stably fixed at the position of the geothermal well through the position, buried in the position of the wellhead of the geothermal well, of the limiting table 6, so that the equipment can stably collect and recharge geothermal water in the geothermal well.

Preferably, a fixing ring 7 is connected between the mounting hole 16 and the first water passing pipe 20, the upper surface of the fixing ring 7 is flush with the upper surface of the connecting table 11, the inner diameter of the fixing ring 7 is the same as the outer diameter of the first water passing pipe 20, the outer diameter of the fixing ring 7 is the same as the inner diameter of the mounting hole 16, and the fixing ring 7 can enable the first water passing pipe 20 to be stably and fixedly mounted in the mounting hole 16. And the top of the mounting hole 16 is plugged to prevent sand and stone on the ground from entering the geothermal well through the mounting hole 16.

Referring to fig. 1 to 4, the connecting mechanism comprises a first rib plate 4 and a second rib plate 5; one end of the second rib plate 5 is fixedly connected with the outer wall of the first water passing pipe 20, the other end of the second rib plate 5 is fixedly connected with the inner wall of the mounting hole 16, the second rib plate 5 is positioned above the sliding plate 33, and the second rib plate 5 can enable the bottom of the first water passing pipe 20 to be stably fixed in the connecting sleeve 10;

One end of the first rib plate 4 is fixedly connected with the inner wall of the connecting sleeve 10, the other end of the first rib plate 4 is fixedly connected with the outer wall of the water intake pipe 23, the first rib plate 4 is positioned below the second water passing pipe 21, and the first rib plate 4 can enable the bottom of the second water passing pipe 21 to be stably fixed in the connecting sleeve 10, so that the firmness of equipment is improved; meanwhile, the first rib plate 4 and the second rib plate 5 enable the first water passing pipe 20, the second water passing pipe 21 and the water intake pipe 23 to be arranged in the connecting sleeve 10 in a suspending mode, the first water passing pipe 20, the second water passing pipe 21 and the water intake pipe 23 are prevented from being attached to the inner wall of the connecting sleeve 10 and the inner wall of the mounting hole 16, and therefore the temperature of geothermal water in the first water passing pipe 20, the temperature of geothermal water in the second water passing pipe 21 and the temperature of geothermal water in the water intake pipe 23 are lowered, and energy in the geothermal water is reduced.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The geothermal mining and irrigation equipment is characterized by comprising a recharging mechanism (1) and an acquisition assembly, wherein the inside of the acquisition assembly is connected with the recharging mechanism (1) through a connecting mechanism;

The collecting assembly comprises a filtering mechanism (2) and a water intake pipe (23), wherein the bottom port of the water intake pipe (23) is inserted into geothermal water in a geothermal well, the top port of the water intake pipe (23) is connected with the filtering mechanism (2), the filtering mechanism (2) is used for filtering sand in the geothermal water, and the top of the filtering mechanism (2) is externally connected with a water suction pump;

The filtering mechanism (2) comprises a second water passing pipe (21) and a first water passing pipe (20), the second water passing pipe (21) is connected with the first water passing pipe (20) through the connecting mechanism, and a filter plate (22) is arranged in the second water passing pipe (21) and the first water passing pipe (20);

The sand removing mechanism (3) is connected to the bottom port of the second water passing pipe (21) and the bottom port of the first water passing pipe (20), the top port of the first water passing pipe (20) is connected with the water absorbing pump, a first interface is arranged on the side wall of the first water passing pipe (20), a second interface and a third interface are arranged on the side wall of the second water passing pipe (21), the second interface is located above the third interface, the second interface is communicated with the first interface, and the third interface is communicated with the top port of the water intake pipe (23).

2. The geothermal mining and irrigation device according to claim 1, wherein the recharging mechanism (1) comprises a connecting sleeve (10) and a connecting table (11), the connecting table (11) is arranged at the top end of the connecting sleeve (10), a mounting hole (16) is formed in the connecting table (11) in a penetrating manner, the mounting hole (16) is used for communicating the upper part of the connecting table (11) with the inside of the connecting sleeve (10), the first water passing pipe (20) and the second water passing pipe (21) are arranged in the connecting sleeve (10), and the top end of the first water passing pipe (20) penetrates through the mounting hole (16) to extend out of the connecting table (11);

the water return storage device is characterized in that a recharging ring groove (12) is formed in the bottom surface of the connecting sleeve (10), a water return storage cavity (13) is formed in the connecting table (11), a water inlet pipe (17) is arranged outside the connecting table, the water return storage cavity (13) is communicated with the recharging ring groove (12) and the water inlet pipe (17), and a valve (8) is connected to the water inlet pipe (17).

3. Geothermal mining and irrigation equipment according to claim 2, characterized in that a fixing ring (7) is connected between the mounting hole (16) and the first water pipe (20), the upper surface of the fixing ring (7) being flush with the upper surface of the connection table (11).

4. The geothermal mining and irrigation device according to claim 2, wherein the sand discharging mechanism (3) comprises a sliding plate (33) and a connecting plate (32), the sliding plate (33) is slidably mounted in the connecting sleeve (10) and located above the second water passing pipe (21), the sliding plate (33) is connected with the connecting plate (32) through a connecting rod (31), the connecting plate (32) is respectively mounted at bottom ports of the first water passing pipe (20) and the second water passing pipe (21), a guide rod (34) is connected to the sliding plate (33), a guide sleeve (14) is arranged in the connecting table (11), the guide rod (34) penetrates through the guide sleeve (14) to extend out of the connecting table (11), and an adjusting mechanism is arranged at a position, located above the connecting table (11), on the guide rod (34).

5. The geothermal mining and irrigation device according to claim 4, wherein the adjusting mechanism is a rotary sleeve (30), a connecting ring table (15) is arranged on the upper surface of the connecting table (11) at a position corresponding to the outer end head of the guide rod (34), the rotary sleeve (30) is rotatably installed on the connecting ring table (15), and the rotary sleeve (30) is sleeved on the guide rod (34) and is connected with the guide rod through threads.

6. The geothermal mining and irrigation device according to claim 4, characterized in that the connecting mechanism comprises a first rib plate (4) and a second rib plate (5);

One end of the second rib plate (5) is connected with the outer wall of the first water passing pipe (20), the other end of the second rib plate is connected with the inner wall of the mounting hole (16), and the second rib plate (5) is positioned above the sliding plate (33);

One end of the first rib plate (4) is connected with the inner wall of the connecting sleeve (10), the other end of the first rib plate is connected with the outer wall of the water intake pipe (23), and the first rib plate (4) is positioned below the second water passing pipe (21).

7. Geothermal mining and irrigation equipment according to claim 2, characterized in that a limit table (6) is arranged on the bottom end face of the connection table (11).