Rotary brush head cleaner for geothermal well

Abstract

A rotary brush head cleaner for a geothermal well relates to the technical field of geothermal well cleaning devices and comprises a transmission case, a telescopic rod is mounted at the bottom of the transmission case, the telescopic rod is in sliding fit with a guide sliding groove in the bottom of the transmission case, and a first driving device is fixedly mounted below the telescopic rod. A rotating column is fixedly installed on an output shaft of a motor arranged in the first driving device, a rotating disc is fixedly installed at the bottom of the rotating column, four adjusting rods which are annularly distributed at equal intervals are arranged outside the rotating disc, movable rods are installed at the outer ends of the adjusting rods, and self-adaptive supporting structures are arranged between the adjusting rods and the movable rods. A brush is fixedly mounted at one end of each movable rod, an adjusting nut is rotatably mounted at the bottom of the rotating disc, the lengths of the four adjusting rods are synchronously adjusted through rotation, and the problems that a cleaner cannot be flexibly adjusted according to geothermal wells with different diameters and the cleaning effect is poor are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of geothermal well cleaning devices, specifically a geothermal well rotating brush head cleaner. Background Technology

[0002] Geothermal well cleaners are specialized equipment designed to remove scale, mud, rust, biological slime, and other blockages that accumulate on the inner walls of geothermal wells during long-term operation. They utilize high-pressure water jet impact, pulse wave shattering, chemical dissolution, or mechanical scraping to break down and remove the scale and impurities, thereby restoring well flow, improving heat exchange efficiency, and extending the lifespan of geothermal wells. They are widely used in geothermal power generation, ground source heat pump systems, and well repair.

[0003] For example, the Chinese authorized patent CN205400678U, entitled "A Geothermal Well Wall Cleaner", includes: a connecting part and a cleaning part. The cleaning part includes: a cleaning shaft, a burr brush head assembly, and a water jet hole. The cleaning shaft is a tubular structure with a bottom-sealed end. The burr brush head assembly and the water jet hole are set on the cleaning shaft. The connecting part is connected to the cleaning shaft.

[0004] While the existing technologies can clean the walls of geothermal wells, they lack flexibility and cannot be adjusted flexibly according to geothermal wells of different diameters. Moreover, the cleaning structure is relatively simple and prone to dirt residue. Therefore, they do not meet current needs. To address this, we propose a geothermal well rotary brush head cleaner. Utility Model Content

[0005] The purpose of this invention is to provide a geothermal well rotary brush head cleaner to solve the problems mentioned in the background art, such as the inability of the cleaner to be flexibly adjusted according to geothermal wells of different diameters and the poor cleaning effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a geothermal well rotary brush head cleaner, comprising a transmission box, a telescopic rod installed at the bottom of the transmission box, the telescopic rod slidingly engaging with a guide groove at the bottom of the transmission box, a first driving device fixedly installed below the telescopic rod, a rotating column fixedly installed on the output shaft of a motor built into the first driving device, a rotating disk fixedly installed at the bottom of the rotating column, four annularly equidistant adjusting rods provided on the outside of the rotating disk, movable rods installed at the outer ends of the adjusting rods, and an adaptive support structure provided between the adjusting rods and the movable rods, a brush fixedly installed at one end of the movable rod, and an adjusting nut rotatably installed at the bottom of the rotating disk, the lengths of the four adjusting rods being synchronously adjusted by rotation.

[0007] Preferably, an adjustment cavity is provided around the inside of the rotating disk, an adjustment rod extends into the interior of the adjustment cavity, and the adjustment rod slides and is limited in place with the adjustment cavity. A screw extending into the interior of the adjustment rod is installed inside the adjustment cavity, and the screw is threadedly engaged with the adjustment rod.

[0008] Preferably, a driven helical gear is installed at one end of the screw, and a driving helical gear is fixed on the shaft at the upper end of the adjusting nut, and the driving helical gear is meshed with the driven helical gear.

[0009] Preferably, a turntable is rotatably mounted inside the transmission box, a second drive device is fixedly mounted on one side of the transmission box, and the output shaft of the motor built into the second drive device is connected to the turntable via a coupling. A connecting arm is mounted on an eccentric position on one side of the turntable via a rotating shaft, and the other end of the connecting arm is connected to the upper end of the telescopic rod via a rotating shaft.

[0010] Preferably, the adaptive support structure includes a spring disposed in the inner cavity at the front end of the adjusting rod, and the two ends of the spring are fixed to the adjusting rod and the movable rod, respectively.

[0011] Preferably, a lifting frame is provided at the top of the transmission box.

[0012] Preferably, an injection mechanism is installed on the outside of the rotating column. The injection mechanism and the rotating column are sealed by a rotary joint, and the top of the injection mechanism is fixed to the first driving device. An infusion tube is connected to one side of the injection mechanism. The rotating column has a hollow structure, and multiple water inlets are provided at one end of the rotating column inside the injection mechanism. Cleaning fluid nozzles are fixedly installed at the four corners of the outside of the rotating disk. A liquid distribution channel is provided at the upper end of the inside of the rotating disk. The liquid distribution channel is connected to the cleaning fluid nozzles and the central hole of the rotating column, respectively.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a rotary cleaning structure. By activating the built-in motor of the first drive device, the output shaft drives the rotating disk to rotate. Four ring-shaped brushes are installed on the outside of the rotating disk. The brushes are in contact with the inner wall of the geothermal well. During continuous rotation, the brushes can effectively remove impurities such as scale, rust, and mud adhering to the well wall, avoiding blind spots and inefficiency of manual cleaning.

[0015] 2. This utility model features a brush length adjustment mechanism. Before the cleaner enters the geothermal well, the operator adjusts the brush length according to the well's diameter. By rotating the adjusting nut, the driving helical gear rotates, which in turn drives the screw to rotate under the meshing of the driven helical gear. The external thread of the screw rubs against the internal thread of the adjusting rod, and in conjunction with the guiding effect of the adjusting cavity on the adjusting rod, the adjusting rod is simultaneously extended and retracted to adapt to the geothermal well's diameter. This avoids cleaning blind spots or over-cleaning caused by improper brush length, improving cleaning efficiency and effectiveness. At the same time, it reduces the cost and hassle of replacing different sizes of cleaners due to well diameter differences.

[0016] 3. This utility model features a brush reciprocating drive mechanism. During the brush rotation, the built-in motor of the second drive device is activated, and its output shaft drives the turntable to rotate, thereby causing the connecting arm eccentrically positioned on one side of the turntable to rotate. The other end of the connecting arm is connected to the telescopic rod that is guided and limited by the guide groove through a rotating shaft. Therefore, as the turntable rotates, the transmission arm forms a linkage-slider cooperation, causing the rotating brush cleaning mechanism below the telescopic rod to perform vertical reciprocating motion. The mechanical impact force generated by the reciprocating motion further breaks up the firmly attached dirt, effectively removing stubborn dirt and deposited impurities.

[0017] 4. This utility model features a cleaning fluid injection mechanism. Under the action of a high-pressure pump, the cleaning fluid is delivered to the inside of the injection mechanism through a delivery pipe. Since the injection mechanism and the first drive device are sealed by a rotary joint, the rotating column and the injection mechanism can maintain a seal while rotating relative to each other. The cleaning fluid entering the injection mechanism can enter the distribution channel in the rotating disk below through the water inlet on the rotating column. Finally, high-pressure cleaning fluid is sprayed from the cleaning fluid nozzle towards the well wall. The high-pressure cleaning fluid can quickly dissolve stubborn impurities such as scale and mud. Combined with the rotation and reciprocating motion of the brush, it achieves powerful flushing and deep cleaning of the well wall. At the same time, the evenly sprayed cleaning fluid can effectively lubricate the brush and the well wall, reduce friction wear, and extend the service life of the brush. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is another perspective view of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the transmission box of this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the rotating disk of this utility model.

[0022] In the diagram: 1. Transmission box; 2. First drive unit; 3. Liquid injection mechanism; 4. Rotary disk; 5. Adjusting rod; 6. Movable rod; 7. Brush; 8. Cleaning fluid nozzle; 9. Second drive unit; 10. Infusion pipe; 11. Lifting frame; 12. Guide chute; 13. Telescopic rod; 14. Turntable; 15. Connecting arm; 16. Adjusting nut; 17. Driving helical gear; 18. Adjusting cavity; 19. Screw; 20. Driven helical gear; 21. Spring; 22. Rotating column; 23. Water inlet; 24. Liquid distribution channel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1:

[0025] Please see Figure 1-4 This utility model provides an embodiment of a geothermal well rotary brush head cleaner, including a transmission box 1. A telescopic rod 13 is installed at the bottom of the transmission box 1, and the telescopic rod 13 is slidably engaged with the guide groove 12 at the bottom of the transmission box 1. A first driving device 2 is fixedly installed below the telescopic rod 13. A rotating column 22 is fixedly installed on the output shaft of the motor built into the first driving device 2. A rotating disk 4 is fixedly installed at the bottom of the rotating column 22. Four annularly distributed adjusting rods 5 are provided on the outside of the rotating disk 4. A movable rod 6 is installed at the outer end of the adjusting rod 5, and an adaptive support structure is provided between the adjusting rod 5 and the movable rod 6. A brush 7 is fixedly installed at one end of the movable rod 6. An adjusting nut 16 is rotatably installed at the bottom of the rotating disk 4, and the length of the four adjusting rods 5 is synchronously adjusted by rotation.

[0026] The rotating cleaning structure enables mechanical scrubbing of the inner wall of the geothermal well, effectively removing dirt; the brush length adjustment mechanism can flexibly adjust the brush position according to different geothermal well diameters, ensuring that the brush fits tightly against the well wall, avoiding blind spots, improving cleaning efficiency, and reducing equipment wear and tear caused by size mismatch, thus lowering maintenance costs.

[0027] Please see Figure 2 and Figure 4 The rotating disk 4 has an adjustment cavity 18 around its perimeter. The adjustment rod 5 extends into the adjustment cavity 18 and is slidably limited to the adjustment cavity 18. The adjustment cavity 18 is equipped with a screw 19 extending into the adjustment rod 5 and is threadedly engaged with the adjustment rod 5. One end of the screw 19 is equipped with a driven helical gear 20. The upper end of the adjusting nut 16 is fixed with a driving helical gear 17, and the driving helical gear 17 is meshed with the driven helical gear 20.

[0028] When the adjusting nut 16 is rotated, the driving helical gear 17 rotates accordingly, driving the screw 19 to rotate through its meshing transmission with the driven helical gear 20. Since the screw 19 is threadedly engaged with the adjusting rod 5, and the adjusting cavity 18 provides a limiting and guiding function for the adjusting rod 5, the rotation of the screw 19 is converted into the linear extension and retraction motion of the adjusting rod 5, thereby adjusting the distance between the brush 7 and the inner wall of the geothermal well. Through the combination of gear transmission and threaded transmission, precise adjustment of the brush length is achieved, making operation simple, stable, and reliable. It can adapt to geothermal wells of various diameters, enhancing the versatility of the cleaner and avoiding frequent equipment replacements due to well diameter differences.

[0029] Please see Figure 1 and Figure 3 The transmission box 1 has a turntable 14 rotatably mounted inside. A second drive device 9 is fixedly mounted on one side of the transmission box 1. The output shaft of the motor built into the second drive device 9 is connected to the turntable 14 through a coupling. A connecting arm 15 is mounted on the eccentric position on one side of the turntable 14 through a rotating shaft. The other end of the connecting arm 15 is connected to the upper end of the telescopic rod 13 through a rotating shaft.

[0030] The second drive unit 9 has a built-in motor that starts, and the output shaft drives the turntable 14 to rotate via a coupling. The eccentrically positioned connecting arm 15 of the turntable 14 rotates accordingly. The connecting arm 15 is connected to the telescopic rod 13 via a rotating shaft, and the telescopic rod 13 slides in the guide groove 12 at the bottom of the transmission box 1. This rotation of the connecting arm 15 drives the telescopic rod 13 to reciprocate vertically, which in turn causes the rotating brush cleaning mechanism below to reciprocate vertically. The brush reciprocating drive mechanism causes the brush to reciprocate vertically while rotating and cleaning, forming a composite cleaning mode. This movement mode expands the cleaning coverage area, enabling more comprehensive removal of dirt from the inner wall of the geothermal well, and producing a stronger impact and peeling effect on stubborn impurities.

[0031] Please see Figure 4 The adaptive support structure includes a spring 21 installed in the inner cavity of the front end of the adjusting rod 5. The two ends of the spring 21 are fixed to the adjusting rod 5 and the movable rod 6, respectively. When the brush 7 contacts the inner wall of the geothermal well, if the inner wall surface is uneven or has protrusions, the movable rod 6 will be squeezed and move into the adjusting rod 5, compressing the spring 21. After passing the protrusion, the spring 21 returns to its original position and pushes the movable rod 6 outward, so that the brush 7 always remains in contact with the well wall.

[0032] Please see Figure 1 The top of the transmission box 1 is equipped with a lifting frame 11. The lifting frame 11 is connected to the lifting equipment hook. The lifting force of the lifting equipment is used to lift the entire cleaner and put it into the geothermal well, or take it out of the geothermal well.

[0033] Example 2:

[0034] Please see Figure 1 and Figure 4 An injection mechanism 3 is installed on the outside of the rotating column 22. The injection mechanism 3 and the rotating column 22 are sealed by a rotary joint. The top of the injection mechanism 3 is fixed to the first drive device 2. An infusion tube 10 is connected to one side of the injection mechanism 3. The rotating column 22 is a hollow structure. The end of the rotating column 22 located inside the injection mechanism 3 is provided with multiple water inlet holes 23. Cleaning liquid nozzles 8 are fixedly installed at the four corners of the outside of the rotating disk 4. A liquid distribution channel 24 is provided at the upper end of the inside of the rotating disk 4. The liquid distribution channel 24 is connected to the cleaning liquid nozzle 8 and the center hole of the rotating column 22 respectively.

[0035] After the high-pressure pump starts, the cleaning fluid is delivered to the injection mechanism 3 through the infusion pipe 10. Since the injection mechanism 3 and the rotating column 22 are sealed by a rotary joint, they remain sealed even when the rotating column 22 rotates. After entering the injection mechanism 3, the cleaning fluid flows through the inlet hole 23 on the rotating column 22 into the distribution channel 24 within the rotating disk 4, and is finally sprayed at high pressure from the cleaning fluid nozzle 8 onto the geothermal well wall. The cleaning fluid spraying mechanism combines chemical and physical cleaning. The high-pressure sprayed cleaning fluid can quickly dissolve and soften stubborn impurities such as scale and mud on the geothermal well wall. Combined with the rotation and reciprocating motion of the brush, it achieves deep cleaning of the well wall, greatly improving the cleaning effect.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A geothermal well rotary brush head cleaner comprising a transmission box (1), characterized in that: The bottom of the transmission box (1) is provided with a telescopic rod (13) which is in sliding fit with the guide sliding groove (12) at the bottom of the transmission box (1), the lower end of the telescopic rod (13) is fixedly provided with a first driving device (2), the output shaft of the built-in motor of the first driving device (2) is fixedly provided with a rotating column (22), the bottom of the rotating column (22) is fixedly provided with a rotating disc (4), the outer portion of the rotating disc (4) is provided with four annularly equidistantly distributed adjusting rods (5), the outer end of the adjusting rod (5) is provided with a movable rod (6), and an adaptive support structure is arranged between the adjusting rod (5) and the movable rod (6), one end of the movable rod (6) is fixedly provided with a brush (7), the bottom of the rotating disc (4) is rotatably provided with an adjusting nut (16), and the lengths of the four adjusting rods (5) are synchronously adjusted by rotating.

2. A rotary brush head cleaner for geothermal wells as claimed in claim 1 wherein: The periphery of the inner portion of the rotating disc (4) is provided with an adjusting cavity (18), the adjusting rod (5) extends into the inner portion of the adjusting cavity (18), and the adjusting rod (5) is in sliding limit with the adjusting cavity (18), the inner portion of the adjusting cavity (18) is provided with a screw rod (19) which extends into the inner portion of the adjusting rod (5), and the screw rod (19) is in screw fit with the adjusting rod (5).

3. A rotary brush head cleaner for geothermal wells as claimed in claim 2 wherein: One end of the screw rod (19) is provided with a driven bevel gear (20), the shaft at the upper end of the adjusting nut (16) is fixedly provided with a driving bevel gear (17), and the driving bevel gear (17) is in meshing connection with the driven bevel gear (20).

4. A rotary brush head cleaner for geothermal wells as defined in claim 1, characterized in that: The inner portion of the transmission box (1) is rotatably provided with a rotating disc (14), one side of the transmission box (1) is fixedly provided with a second driving device (9), the output shaft of the built-in motor of the second driving device (9) is connected with the rotating disc (14) through a shaft coupling, the eccentric position of one side of the rotating disc (14) is rotatably provided with a connecting arm (15), and the other end of the connecting arm (15) is connected with the upper end of the telescopic rod (13) through a rotating shaft.

5. A rotary brush head cleaner for geothermal wells as defined in claim 1, characterized in that: The adaptive support structure comprises a spring (21) arranged in the inner cavity of the front end of the adjusting rod (5), and the two ends of the spring (21) are fixedly connected with the adjusting rod (5) and the movable rod (6) respectively.

6. A rotary brush head cleaner for geothermal wells as defined in claim 1, characterized in that: The top end of the transmission box (1) is provided with a lifting frame (11).

7. A rotary brush head cleaner for geothermal wells as defined in claim 1, characterized in that: The outer portion of the rotating column (22) is provided with a liquid injection mechanism (3), the liquid injection mechanism (3) is sealed with the rotating column (22) through a rotating joint, the top end of the liquid injection mechanism (3) is fixedly connected with the first driving device (2), one side of the liquid injection mechanism (3) is connected with a liquid delivery pipe (10), the rotating column (22) is a hollow structure, one end of the rotating column (22) located in the inner portion of the liquid injection mechanism (3) is provided with a plurality of water inlet holes (23), the four corners of the outer portion of the rotating disc (4) are fixedly provided with cleaning liquid nozzles (8), the upper end of the inner portion of the rotating disc (4) is provided with a liquid distribution channel (24) which is in communication with the cleaning liquid nozzles (8) and the central hole of the rotating column (22) respectively.

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