Portable multifunctional well washing device

Abstract

The application discloses a portable multifunctional well washing device, which comprises a support frame, a first support frame which is arranged on the support frame in a liftable mode, a second support frame which is arranged on the first support frame in a liftable mode, a sleeve assembly which is arranged on the first support frame in an upper end mode, a drill rod assembly, a rotary joint, a drill sleeve, a drill bit which is arranged at a lower end of the drill sleeve, a spraying assembly which is arranged on an outer wall of the drill sleeve at the lower end, and a locking piece which is arranged between the drill rod assembly and the drill sleeve; the drill sleeve is coaxially arranged at the lower end inside the sleeve assembly; an inner wall of the drill sleeve is provided with a first chamber and a second chamber; an exhaust port is arranged in the first chamber; and a liquid discharge port which is communicated with the spraying assembly is arranged in the second chamber; the drill rod assembly is coaxially arranged inside the sleeve assembly; an upper end of the drill rod assembly is rotatably arranged on the second support frame; a lower end of the drill rod assembly is rotatably and up-and-down slidably arranged inside the drill sleeve; and a passage which is sealed at the lower end is formed in the drill rod assembly; the passage is communicated with a gas source or a water source through the rotary joint at an upper end; and a through hole is arranged on an outer side wall of the passage at a lower end. The well washing device has the advantages of light structure, various functions, high well washing efficiency and small workload.

Description

Technical Field

[0001] This application relates to the field of well cleaning technology, specifically a lightweight, multi-functional well cleaning device. Background Technology

[0002] Currently, monitoring wells are widely used to monitor earthquakes, land subsidence, groundwater and soil pollution, water level changes, rock mass and dam displacement; however, due to a lack of maintenance, a large amount of dirt, including silt, microbial dirt, rust, snails, etc., accumulates on the inner wall and bottom of the well over a long period of time. This will affect the reliability of the sampling results of groundwater environmental monitoring wells, so monitoring wells need to be cleaned and maintained regularly.

[0003] In actual well cleaning operations, it is often necessary to first use drilling to clean the scale that has settled at the bottom of the well, and then use jet cleaning (using high-pressure water flow) to clean the scale that is attached to the well wall. Next, air compressor cleaning (using high-pressure airflow) is used to flush out the scale inside the well pipe. Finally, water pumping is used to drain the sewage inside the well pipe, thereby making the well water clear.

[0004] However, because the existing well-washing equipment has a relatively limited function and cannot meet the needs of the above-mentioned different well-washing methods at the same time, multiple drill pipe lowering operations are required during a single well-washing operation in order to change different well-washing equipment. This increases the workload of the operators and reduces the efficiency of the well-washing operation. Summary of the Invention

[0005] One objective of this application is to provide a lightweight, multifunctional well-washing device that can perform multiple different well-washing methods under a single drill pipe lowering operation, with high well-washing efficiency and low workload for operators.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a lightweight multi-functional well-washing device, comprising a support frame, a first support, a second support, a casing assembly, a drill pipe assembly, a rotary joint, a drill sleeve, a drill bit, an injection assembly, and a locking component; the first support is movably mounted on the support frame, and the second support is movably mounted on the first support; the upper end of the casing assembly is mounted on the first support; the drill sleeve is coaxially rotatably mounted on the lower inner end of the casing assembly, and the inner sidewall of the drill sleeve is provided with a first chamber and a second chamber spaced vertically apart, with an exhaust port penetrating the first chamber and a drain port penetrating the second chamber; the drill bit is mounted on the lower end of the drill sleeve, and the injection assembly is mounted on the lower outer wall of the drill sleeve, and the injection assembly communicates with the drain port; both the drill bit and the injection assembly are located below the casing assembly, and the maximum distance of the drill bit from the central axis of the drill sleeve is greater than the maximum distance of the injection assembly from the central axis of the drill sleeve; the drill pipe assembly is coaxially arranged on the casing. Inside the assembly, the upper end of the drill rod assembly is rotatably mounted on the second support; the lower end of the drill rod assembly is rotatably and slidably mounted inside the drill sleeve, and a seal is formed between the outer wall of the drill rod assembly and the inner wall of the drill sleeve; a channel is formed inside the drill rod assembly, and the upper end of the channel is connected to an air source or a water source through the rotary joint; the lower end of the channel is sealed, and a through hole is provided on the outer side wall of the lower end of the channel; a locking member is disposed between the drill rod assembly and the drill sleeve, and the locking member is used to restrict relative rotation between the drill rod assembly and the drill sleeve, thereby driving the drill bit and the jet assembly to rotate by rotating the drill rod assembly; when the drill rod assembly moves upward relative to the casing assembly until the through hole connects to the first chamber, the upper end of the channel is connected to the air source through the rotary joint; when the drill rod assembly moves downward relative to the casing assembly until the through hole connects to the second chamber, the upper end of the channel is connected to the water source through the rotary joint.

[0007] Preferably, the end of the exhaust port extends upward.

[0008] Preferably, a cap is provided on the outer side wall of the lower end of the drill pipe assembly. When the through hole is connected to the first chamber, the cap is separated from the upper end of the exhaust port; when the through hole is connected to the second chamber, the cap is placed on the upper end of the exhaust port to seal the exhaust port.

[0009] Preferably, the outer side wall of the lower end of the drill pipe assembly is provided with a guide groove, the guide groove including an upper vertical section, a lower vertical section, and an inclined section for connecting the upper vertical section and the lower vertical section; the locking member is disposed through the outer side wall of the drill sleeve, and the locking member is slidably connected to the guide groove; when the drill pipe assembly moves downward relative to the casing assembly until the locking member moves relative to the upper end of the upper vertical section, the cap is placed on the upper end of the vent port; when the drill pipe assembly moves upward relative to the casing assembly until the locking member moves relative to the lower end of the upper vertical section, the cap separates from the upper end of the vent port; when the drill pipe assembly continues to move upward relative to the casing assembly until the locking member moves relative to the lower vertical section along the inclined section, the locking member forces the drill sleeve to rotate relative to the drill pipe assembly through the inclined section, thereby causing the cap to be misaligned with the upper end of the vent port in the horizontal direction.

[0010] Preferably, the spraying assembly includes a nozzle and an adjusting member. The nozzle is adapted to be inclinedly arranged on the outside of the drill sleeve, and the horizontal distance between each position of the nozzle along the axial direction and the drill sleeve is adapted to be equal. The nozzle is connected to the drain port, and a spray hole is provided on the side of the nozzle away from the drill sleeve. The adjusting member is disposed between the nozzle and the drill sleeve, and the adjusting member is used to adjust the horizontal distance between the nozzle and the drill sleeve.

[0011] Preferably, a sleeve extends horizontally on the side of the nozzle near the drill sleeve; the adjusting component of the drill sleeve includes an insert, a locking nut, and a locking screw; the locking nut is fitted onto one end of the insert and threadedly connected to the drain port, thereby fixing the insert to the drain port; the other end of the insert is inserted into the sleeve, and the outer wall of the insert and the inner wall of the sleeve form a seal; the outer wall of the insert is adapted to have multiple slots, the locking screw is threadedly connected to the sleeve, and the locking screw is engaged in one of the slots; when the locking screw is engaged in different slots, the horizontal distance between the nozzle and the drill sleeve is different.

[0012] Preferably, the drill bit includes a mounting part, a lower cutting edge, and a side cutting edge. The mounting part is detachably disposed at the lower end of the drill sleeve. One end of the lower cutting edge is disposed at the mounting part, and the other end of the lower cutting edge is disposed at the lower end of the side cutting edge.

[0013] Preferably, the upper surface of the lower shovel blade is provided with a plurality of breaking blades spaced apart along the length direction, and / or the side shovel blade has a spiral structure.

[0014] Preferably, the upper end of the casing assembly is provided with an annular retaining ring along the circumferential direction; the portable multi-functional well washing equipment further includes a drainage hood, which is disposed on the first support, and the inner bottom of the drainage hood has a protruding annular portion, which is sleeved on the outside of the casing assembly, and the upper end of the annular portion is inserted into the inside of the annular retaining ring, and the annular portion is adapted to form a seal with the annular retaining ring and / or the casing assembly; the upper end of the drainage hood is provided with a clearance hole for passing through the drill pipe assembly, and the clearance hole forms a seal with the drill pipe assembly; the outer side of the drainage hood is provided with a drain port, and the height of the drain port is adapted to be lower than the height of the upper end of the annular portion.

[0015] Preferably, the portable multi-functional well washing equipment further includes a submersible pump, which is adapted to be detachably mounted on the outer arm of the casing assembly, and the maximum distance of the submersible pump from the central axis of the casing assembly is smaller than the maximum distance of the drill bit from the central axis of the casing assembly.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: during well washing operations, the support frame is first placed at the wellhead accessory, and the central axis of the casing assembly is aligned with the central axis of the well pipe; then, the first support is controlled to descend, and the second support descends with the first support, thereby allowing the drill bit and the jetting assembly to gradually penetrate into the well pipe. Next, as the first support continues to descend, the drill pipe assembly is controlled to rotate. Under the action of the locking element, the drill pipe assembly drives the drill sleeve to rotate synchronously, thereby driving the drill bit and the jetting assembly to rotate. After the drill bit rotates, it is used to clean the dirt attached to the inner wall of the well casing and to loosen the dirt deposited at the bottom of the well, thereby achieving "drilling and washing". At the same time, the third support is controlled to slide downward relative to the second support, thereby causing the drill pipe assembly to move downward relative to the casing assembly until the through hole is connected to the second chamber (then the vent is closed and no liquid is discharged), and the upper end of the channel is connected to the water source through the rotary joint. At this time, the water source can enter the jetting assembly in sequence through the channel, the through hole, the second chamber and the drain port, thereby performing "jetting and washing" on the inner wall of the well casing during the rotation of the jetting assembly. Finally, when the drill bit reaches the bottom of the well, the third support is controlled to slide upward relative to the second support, thereby causing the drill pipe assembly to move upward relative to the casing assembly until the through hole connects with the first chamber (then the drain port is closed and no gas is discharged). The upper end of the channel is connected to the air source through the rotary joint. At this time, the air source can enter the space between the casing assembly and the drill sleeve in sequence through the channel, the through hole, the first chamber and the exhaust port, and be discharged upward along the gap between the casing assembly and the drill pipe assembly. This draws the mixture of dirt and sewage below the casing assembly into the space between the casing assembly and the drill sleeve, and allows the mixture to be discharged upward along with the air source through the gap between the casing assembly and the drill pipe assembly, thereby achieving "air compressor well washing". As can be seen from the above, this well-washing equipment can perform various well-washing operations such as "borehole washing," "jet washing," and "air compressor washing" in a single drill pipe lowering operation. It has richer and more diverse functions, and there is no need to change different well-washing equipment during the well-washing operation, which reduces the workload of operators and improves the efficiency of well-washing operations. In addition, the well-washing equipment has a higher degree of integration, a lighter structure, and is easier to carry. It is especially suitable for well-washing operations of dedicated monitoring wells that already have surface protection devices in field conditions. Attached Figure Description

[0017] Figure 1 A perspective view of a portable multi-functional well-washing device provided for this application.

[0018] Figure 2 Provided for this application Figure 1 Enlarged view of the middle part of the structure.

[0019] Figure 3 Provided for this application Figure 2 Exploded views of the various structures in the diagram.

[0020] Figure 4 Provided for this application Figure 3 Enlarged view of the middle part of the structure.

[0021] Figure 5 Provided for this application Figure 4 Exploded views of the various structures in the diagram.

[0022] Figure 6 Provided for this application Figure 5 A magnified view of a section at point I.

[0023] Figure 7 Provided for this application Figure 5 A magnified view of section II in the middle.

[0024] Figure 8 Provided for this application Figure 5 A magnified view of a portion of the drill pipe assembly.

[0025] Figure 9 Provided for this application Figure 5 Enlarged view of the rotating component.

[0026] Figure 10 Provided for this application Figure 5 Enlarged view of the injection assembly.

[0027] Figure 11 Provided for this application Figure 10 An exploded view of a magnified portion of the central area.

[0028] Figure 12 Provided for this application Figure 2 Top view of each structure.

[0029] Figure 13 Provided for this application Figure 12 Sectional view along the middle AA.

[0030] Figure 14 Provided for this application Figure 13 Another state diagram of each structure.

[0031] Figure 15 Provided for this application Figure 1 Enlarged view of the middle part of the structure.

[0032] Figure 16 Provided for this application Figure 15Enlarged view of the middle part of the structure.

[0033] Figure 17 Provided for this application Figure 16 Exploded view of the middle section of the structure.

[0034] Figure 18 Exploded views of 15 partial structures provided in this application.

[0035] Figure 19 Provided for this application Figure 15 Exploded view of the central drainage shroud.

[0036] Figure 20 Provided for this application Figure 15 Cross-sectional views of each structure.

[0037] Figure 21 Provided for this application Figure 20 A magnified view of section III in the middle.

[0038] Figure 22 A perspective view of the casing section and drill pipe section provided for this application.

[0039] Figure 23 A schematic diagram of the supply system provided in this application.

[0040] In the diagram: 1. Casing assembly; 10. Casing section; 11. Annular retaining ring; 12. Limiting groove; 2. Drill rod assembly; 20. Drill rod section; 21. Channel; 22. Through hole; 23. Cap; 24. Guide groove; 241. Upper vertical section; 242. Lower vertical section; 243. Inclined section; 25. Limiting part; 3. Drill sleeve; 31. First chamber; 311. Exhaust port; 32. Second chamber; 321. Drain port; 4. Jet assembly; 41. Spray pipe; 411. Spray hole; 412. Sleeve sleeve; 42. Adjusting component; 421. Insert pipe; 4211. Slot; 422. Locking nut; 423. Locking screw; 5. Locking component; 6. Drill bit; 61. Mounting part; 62. Lower cutting edge; 621. Breaking edge; 63. Side cutting edge; 7. Drainage cover; 71. Annular part; 72. Clearance hole; 73. Drain outlet; 8. Clamping block; 81. Shaft hole; 82. Oil storage tank; 83. Bolt hole; 84. Long strip hole; 85. Mounting rod; 86. Mounting nut; 9. Rotating part; 91. Jacket; 92. Connecting rod; 93. Limiting strip; 100. Support frame; 200. First bracket; 300. Second bracket; 400. Rotary joint; 500. Submersible pump; 600. Motor; 700. Lifting mechanism; 701. Guide column; 702. Guide sleeve; 703. Drive component; 800. Supply system; 801. Water tank; 802. Filter screen; 803. Water pump; 804. Control valve; 805. Water pumping pipe; 806. High pressure pump; 807. Water outlet pipe; 808. Air compressor; 809. Air outlet pipe. Detailed Implementation

[0041] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0042] In the description of this application, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific scope of protection of this application. The terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The terms "comprising" and "having," and any variations thereof, in the specification and claims of this application, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0043] Reference Figures 1 to 5 , Figure 15 , Figure 16 as well as Figure 20 One embodiment of this application provides a portable multi-functional well-washing device, including a support frame 100, a first bracket 200, a second bracket 300, a casing assembly 1, a drill pipe assembly 2, a rotary joint 400, a drill sleeve 3, a drill bit 6, a jetting assembly 4, and a locking element 5; the first bracket 200 is vertically and flexibly mounted on the support frame 100, and the second bracket 300 is vertically and flexibly mounted on the first bracket 200; the upper end of the casing assembly 1 is mounted on the first bracket 200; the drill sleeve 3 is coaxially and rotatably mounted inside the casing assembly 1. At the end, the inner wall of the drill sleeve 3 is provided with a first chamber 31 and a second chamber 32 spaced vertically. An exhaust port 311 penetrates the first chamber 31, and a drain port 321 penetrates the second chamber 32. The drill bit 6 is located at the lower end of the drill sleeve 3, and the jetting assembly 4 is located on the lower outer wall of the drill sleeve 3, communicating with the drain port 321. Both the drill bit 6 and the jetting assembly 4 are located below the casing assembly 1, and the maximum distance between the drill bit 6 and the central axis of the drill sleeve 3 is greater than the maximum distance between the jetting assembly 4 and the central axis of the drill sleeve 3 (e.g., ...). Figure 12(As shown); the drill rod assembly 2 is coaxially arranged inside the casing assembly 1, and the upper end of the drill rod assembly 2 is rotatably mounted on the second support 300; the lower end of the drill rod assembly 2 is rotatably and slidably mounted inside the drill sleeve 3, and a seal is formed between the outer wall of the drill rod assembly 2 and the inner wall of the drill sleeve 3; a channel 21 is formed inside the drill rod assembly 2, and the upper end of the channel 21 is connected to an air source or water source through a rotary joint 400; the lower end of the channel 21 is sealed, and a through hole 22 is provided on the outer side wall of the lower end of the channel 21; a locking member 5 is provided on the drill rod assembly 2. Between the drill pipe assembly 2 and the drill sleeve 3, the locking member 5 is used to restrict the relative rotation between the drill pipe assembly 2 and the drill sleeve 3, thereby driving the drill bit 6 and the jetting assembly 4 to rotate by rotating the drill pipe assembly 2; when the drill pipe assembly 2 moves upward relative to the casing assembly 1 until the through hole 22 connects to the first chamber 31, the upper end of the channel 21 is connected to the air source through the rotary joint 400; when the drill pipe assembly 2 moves downward relative to the casing assembly 1 until the through hole 22 connects to the second chamber 32, the upper end of the channel 21 is connected to the water source through the rotary joint 400.

[0044] The working principle of this well-washing equipment is as follows: (1) Figure 1 and Figure 2 As shown, during well washing operations, the support frame 100 is placed at the wellhead accessory, and the central axis of the casing assembly 1 is aligned with the central axis of the well pipe; then the first support 200 is controlled to descend, and the second support 300 descends with the first support 200, thereby allowing the drill bit 6 and the jetting assembly 4 to gradually penetrate into the well pipe.

[0045] (2) Figure 13 As shown, during the descent of the first support 200, the drill pipe assembly 2 is rotated. Under the action of the locking element 5, the drill pipe assembly 2 drives the drill sleeve 3 to rotate synchronously, thereby driving the drill bit 6 and the jetting assembly 4 to rotate. After the drill bit 6 rotates, it is used to clean the dirt (mainly clumps of dirt) adhering to the inner wall of the well casing and to loosen the dirt deposited at the bottom of the well, thereby achieving "drilling and well washing". At the same time, the third support is controlled to slide downward relative to the second support 300, thereby causing the drill pipe assembly 2 to move downward relative to the casing assembly 1 until the through hole 22 is connected to the second chamber 32 (then the vent 311 is closed and no liquid is discharged), and the upper end of the channel 21 is connected to the water source through the rotary joint 400. At this time, the water source can enter the jetting assembly 4 (e.g., through the channel 21, through hole 22, second chamber 32 and drain port 321 in sequence) Figure 13 (The direction of the dotted arrow in the image) thus "jet washes" the inner wall of the well pipe during the rotation of the jet assembly 4, thereby cleaning the inner wall of the well pipe.

[0046] (3) Figure 14 and Figure 20As shown, when the drill bit 6 reaches the bottom of the well, the third support is controlled to slide upward relative to the second support 300, thereby causing the drill pipe assembly 2 to move upward relative to the casing assembly 1 until the through hole 22 connects with the first chamber 31 (then the drain port 321 is closed and no gas is discharged). The upper end of the channel 21 is connected to the gas source through the rotary joint 400. At this time, the gas source can enter the space between the casing assembly 1 and the drill sleeve 3 in sequence through the channel 21, through hole 22, first chamber 31 and exhaust port 311, and be discharged upward along the gap between the casing assembly 1 and the drill pipe assembly 2 (e.g., Figure 14 (Solid line arrow direction), thereby drawing the mixture of dirt and sewage below the casing assembly 1 into the space between the casing assembly 1 and the drill bushing 3, and causing the mixture to be discharged upwards through the gap between the casing assembly 1 and the drill pipe assembly 2 with the air source (e.g., Figure 14 and Figure 20 (The direction of the dashed arrow in the middle) thus achieves "air compressor 808 well cleaning".

[0047] Therefore, this well-washing equipment can meet the requirements of multiple well-washing operation modes such as "drilling well-washing", "jetting well-washing" and "air compressor 808 well-washing" under the condition of one drill pipe lowering operation. It has richer and more diverse functions, and there is no need to change different well-washing equipment during the well-washing operation, which reduces the workload of operators and improves the efficiency of well-washing operation. In addition, the well-washing equipment has a higher degree of integration, a lighter structure, and is easy to carry. It is especially suitable for well-washing operations of dedicated monitoring wells that have raised above the surface protection device in field conditions.

[0048] Reference Figures 1 to 3 To enable the "water pumping and well washing" operation, the portable multi-functional well washing equipment also includes a submersible pump 500. The submersible pump 500 is adapted to be detachably mounted on the outer arm of the casing assembly 1, and the maximum distance between the submersible pump 500 and the central axis of the casing assembly 1 is smaller than the maximum distance between the drill bit 6 and the central axis of the casing assembly 1 (e.g., ...). Figure 12 (As shown). After completing the "air compressor 808 well cleaning" step, the submersible pump 500 is started to pump water until the pumped water becomes clear, thus completing the "water pumping well cleaning". Of course, if the inner diameter of the well pipe is small, and installing the submersible pump 500 would prevent it from being inserted into the well pipe for well cleaning operations, the submersible pump 500 can be removed. After completing the "air compressor 808 well cleaning" step and removing the casing assembly 1, the submersible pump 500 can be inserted separately for "water pumping well cleaning". The method of detachable installation of the submersible pump 500 is not limited; for example, it can be installed using screws.

[0049] Reference Figure 6 as well as Figure 14In this embodiment, in order to improve the efficiency of "air compressor 808 well cleaning", the end of the exhaust port 311 extends upward. At this time, the air source is separated from the sewage before it is discharged through the exhaust port 311 (i.e. before the air source moves upward), which can reduce the kinetic energy loss caused by convection with sewage and help improve the efficiency of "air compressor 808 well cleaning".

[0050] like Figure 13 As shown, if the cap 23 is not installed, the exhaust port 311 with its end facing upward will be exposed to sewage during "drilling and washing" and "jetting and washing" operations. This makes it easy for dirt in the sewage to enter the exhaust port 311, which can easily block the exhaust port 311. The dirt can also easily reach the drill pipe assembly 2 and the drill sleeve 3 through the first chamber 31, thereby affecting the relative sliding and rotation smoothness between the drill pipe assembly 2 and the drill sleeve 3.

[0051] To solve the above problems, refer to Figure 4 , Figure 5 , Figure 8 , Figure 13 as well as Figure 14 In this embodiment, a cap 23 is provided on the outer side wall of the lower end of the drill pipe assembly 2. When the through hole 22 is connected to the first chamber 31, the cap 23 is separated from the upper end of the exhaust port 311. When the through hole 22 is connected to the second chamber 32, the cap 23 is placed on the upper end of the exhaust port 311, thereby sealing the exhaust port 311. Under the action of the cap 23, when performing "drilling and well washing" and "jetting and well washing" operations, that is, when the drill pipe assembly 2 moves downward relative to the casing assembly 1, the cap 23 moves to cover the upper end of the exhaust port 311, thereby sealing the exhaust port 311 to prevent dirt from entering the exhaust port 311. When performing "air compressor 808 well washing" operations, that is, when the drill pipe assembly 2 moves upward relative to the casing assembly 1, the cap 23 moves relative to the exhaust port 311 to separate from it, thereby opening the exhaust port 311 to realize the "air compressor 808 well washing" operation.

[0052] It should be understood that while the cap 23 prevents dirt from entering the exhaust port 311, during the "air compressor 808 well cleaning" operation, the cap 23 is located directly above the exhaust port 311, which increases the kinetic energy loss of the air source discharged from the exhaust port 311, thereby reducing the efficiency of the "air compressor 808 well cleaning" operation. Therefore, in this embodiment, as... Figure 5 , Figure 6 , Figure 8As shown, the outer wall of the lower end of the drill pipe assembly 2 is provided with a guide groove 24, which includes an upper vertical section 241, a lower vertical section 242, and an inclined section 243 for connecting the upper vertical section 241 and the lower vertical section 242; a locking member 5 is provided through the outer wall of the drill sleeve 3 and is slidably connected to the guide groove 24; when the drill pipe assembly 2 moves downward relative to the casing assembly 1 until the locking member 5 moves to the upper end of the upper vertical section 241, the cap 23 covers the upper end of the vent 311. When the drill pipe assembly 2 moves upward relative to the casing assembly 1, until the locking member 5 moves relative to the lower end of the upper vertical section 241, the cap 23 separates from the upper end of the vent 311; when the drill pipe assembly 2 continues to move upward relative to the casing assembly 1, until the locking member 5 moves relative to the lower vertical section 242 along the inclined section 243, the locking member 5 forces the drill sleeve 3 to rotate relative to the drill pipe assembly 2 through the inclined section 243, thereby causing the cap 23 to be horizontally offset from the upper end of the vent 311. Figure 13 As shown, during "drilling and washing" and "jetting and washing" operations, the drill pipe assembly 2 moves downward relative to the casing assembly 1 until the locking member 5 moves to the upper end of the upper vertical section 241, at which point the cap 23 covers the upper end of the vent port 311; moreover, at this time, the locking member 5 is located inside the upper vertical section 241, which can restrict relative rotation between the drill pipe assembly 2 and the drill sleeve 3, thus allowing torque to be transmitted. Figure 14 As shown, during the "air compressor 808 well washing" operation, the drill pipe assembly 2 continues to move upward relative to the casing assembly 1 until the locking member 5 moves relative to the lower vertical section 242 along the inclined section 243. At this point, the locking member 5 forces the drill sleeve 3 to rotate relative to the drill pipe assembly 2 through the inclined section 243, thereby causing the cap 23 to be offset from the upper end of the exhaust port 311 in the horizontal direction, that is, the cap 23 is not located directly above the exhaust port 311. Moreover, at this time, the locking member 5 is located in the lower vertical section 242, which can also restrict the relative rotation between the drill pipe assembly 2 and the drill sleeve 3, so torque can also be transmitted.

[0053] Reference Figure 5 as well as Figure 10 In this embodiment, to accommodate well casings with different inner diameters, the injection assembly 4 includes a nozzle 41 and an adjusting member 42. The nozzle 41 is adapted to be inclinedly arranged on the outside of the drill sleeve 3, and the horizontal distance between each position of the nozzle 41 and the drill sleeve 3 in the axial direction is adapted to be equal. The nozzle 41 is connected to the drain port 321, and a nozzle hole 411 is provided on the side of the nozzle 41 away from the drill sleeve 3. The adjusting member 42 is disposed between the nozzle 41 and the drill sleeve 3, and the adjusting member 42 is used to adjust the horizontal distance between the nozzle 41 and the drill sleeve 3. That is to say, during well washing operations, the horizontal distance between the nozzle 41 and the drill sleeve 3 can be adjusted by the adjusting member 42 according to the size of the well casing's inner diameter, so that the distance between the nozzle hole 411 and the inner wall of the well casing is within a reasonable range.

[0054] Reference Figure 10 as well as Figure 11 In this embodiment, a sleeve 412 extends horizontally on the side of the nozzle 41 near the drill sleeve 3; the adjusting member 42 of the drill sleeve 3 includes an insert 421, a locking nut 422, and a locking screw 423. The locking nut 422 is sleeved on one end of the insert 421 and threadedly connected to the drain port 321, thereby fixing the insert 421 to the drain port 321; the other end of the insert 421 is inserted into the sleeve 412, and the outer wall of the insert 421 and the inner wall of the sleeve 412 form a seal; the outer wall of the insert 421 is adapted to have multiple slots 4211, and the locking screw 423 is threadedly connected to the sleeve 412, and the locking screw 423 is engaged in one of the slots 4211; when the locking screw 423 is engaged in different slots 4211, the horizontal distance between the nozzle 41 and the drill sleeve 3 is different. During installation, the locking nut 422 can be directly threaded onto the drain port 321. By rotating and adjusting the locking screw 423, the horizontal distance between the nozzle 41 and the drill sleeve 3 can be changed so that the locking screw 423 fits into different slots 4211. The structure is simple and the installation and adjustment are very convenient.

[0055] Reference Figure 4 as well as Figure 5 In this embodiment, the drill bit 6 includes a mounting part 61, a lower cutting edge 62, and a side cutting edge 63. The mounting part 61 is detachably disposed at (e.g., threadedly connected to) the lower end of the drill sleeve 3; one end of the lower cutting edge 62 is disposed at the mounting part 61, and the other end of the lower cutting edge 62 is disposed at the lower end of the side cutting edge 63. A drill bit 6 of appropriate size is selected according to different well casing inner diameters and can be installed at the lower end of the drill sleeve 3 via the mounting part 61. When the drill sleeve 3 rotates, the mounting part 61 drives the lower cutting edge 62 and the side cutting edge 63 to rotate. The lower cutting edge 62 can clean up the dirt deposited at the bottom of the well casing (even if the dirt deposited at the bottom of the well is loosened), and the side cutting edge 63 can clean the dirt adhering to the inner wall of the well casing (mainly clump-like dirt, preventing incomplete cleaning by jet flushing). For example, Figure 7 As shown, the upper surface of the lower shovel blade 62 is provided with multiple breaking blades 621 spaced apart along its length. These breaking blades 621 can break up large volumes of dirt scooped up by the lower shovel blade 62 into smaller volumes, thus facilitating the removal of dirt. In addition, the side shovel blade 63 is preferably of a spiral structure for better cleaning effect.

[0056] In this embodiment, the upper end of the sleeve assembly 1 is provided with an annular retaining ring 11 along the circumferential direction (e.g., Figure 18 (as shown); Figure 15 and Figures 19 to 21As shown, the portable multi-functional well washing equipment also includes a drainage hood 7, which is mounted on the first support 200. The bottom inner part of the drainage hood 7 has a protruding annular portion 71, which is fitted over the outside of the casing assembly 1. The upper end of the annular portion 71 is inserted into the inside of the annular retaining ring 11 (e.g., Figure 21 As shown in the diagram, the annular portion 71 is adapted to form a seal with the annular retaining ring 11 and / or the casing assembly 1; the upper end of the drainage shroud 7 is provided with a clearance hole 72 for the drill pipe assembly 2 to pass through, and the clearance hole 72 forms a seal with the drill pipe assembly 2; the outer side of the drainage shroud 7 is provided with a drain port 73, the height of which is adapted to be lower than the upper end height of the annular portion 71. This arrangement will not interfere with the rotation of the casing assembly 1 or the drill pipe assembly 2. Moreover, under the action of the drainage shroud 7, when the "air compressor 808 well washing" operation is performed, the sewage mixture discharged from between the casing assembly 1 and the drill pipe assembly 2 will enter the interior of the drainage shroud 7 through the annular retaining ring 11 and finally be discharged from the drain port 73. At this time, the sewage mixture will neither contaminate the first support 200 nor flow back into the well pipe. Otherwise, if the drainage shroud 7 is not provided, a cover and seal must be provided at the wellhead to prevent the sewage mixture from flowing back into the well pipe.

[0057] It should be understood that there are no restrictions on the methods of providing gas and water sources, for example, such as Figure 23As shown, the portable multi-functional well-washing equipment also includes a supply system 800 for providing air and water sources. The supply system 800 includes a mixing pipe, a water tank 801, a filter screen 802, a water pump 803, a high-pressure pump 806, a control valve 804, a water pumping pipe 805, a water outlet pipe 807, an air outlet pipe 809, and an air compressor 808. The filter screen 802 is installed inside the water tank 801 and serves to divide the water tank 801 into an upper cavity and a lower cavity. The water pumping... Pipe 805 is equipped with a control valve 804 and a water pump 803, with one end of the water pipe 805 connected to the lower cavity. Water outlet pipe 807 is equipped with a control valve 804 and a high-pressure pump 806, with one end of the water outlet pipe 807 connected to the upper cavity and the other end connected to the rotary joint 400 via a mixing pipe. Air outlet pipe 809 is equipped with a control valve 804, with one end connected to an air compressor 808 and the other end also connected to the rotary structure via a mixing pipe. Before well washing operations, the other end of the water pipe 805 is inserted into the well casing. Turning on the control valve on the water pipe 805 and the water pump 803 pumps well water into the lower cavity. After entering the lower cavity, the well water is filtered by the filter screen 802 before reaching the upper cavity. This filtration method is less likely to clog the filter screen 802. When the control valve 804 on the air outlet pipe 809 is closed, and the control valves 804 on the high-pressure pump 806 and the water outlet pipe 807 are open, the clean water in the upper cavity can sequentially enter the channel 21 through the water outlet pipe 807, the mixing pipe, and the rotary joint 400, thereby supplying water for the "jet well washing" operation. When the control valves on the high-pressure pump 806 and the water outlet pipe 807 are closed, and the control valve 804 on the air outlet pipe 809 is open, the high-pressure air in the air compressor 808 can sequentially enter the channel 21 through the air outlet pipe 809, the mixing pipe, and the rotary joint 400, thereby supplying air for the "air compressor 808 well washing" operation. For ease of storage and transportation, the water tank 801 is preferably foldable. The specific structure of the rotary joint 400 is existing technology and will not be described in detail here.

[0058] It should be understood that this application does not limit the height-adjustable installation method of the first bracket 200 and the second bracket 300. For example, taking the height-adjustable installation method of the second bracket 300 as an example: Figure 15 and Figure 16As shown, the lifting mechanism 700 includes a guide column 701, a guide sleeve 702, and a driving component 703. The guide column 701 is vertically mounted on the first bracket 200, and the guide sleeve 702 is mounted on the second bracket 300. The guide sleeve 702 is slidably connected to the guide column 701, meaning that the guide column 701 and the guide sleeve 702 provide vertical sliding limits. The driving component 703 is located on the first bracket 200 to drive the second bracket 300 to move up and down. The driving component 703 is a conventional design, such as a hydraulic cylinder, a screw lifting mechanism 700, or a winch. The lifting stroke of the second bracket 300 is relatively short, so a hydraulic cylinder is used for driving; the lifting stroke of the first bracket 200 is longer, making a screw lifting mechanism 700 or a winch suitable for driving.

[0059] It should be understood that this application does not limit the rotatable mounting method of the drill pipe assembly 2, for example, as Figure 16 and Figure 17 As shown, the outer wall of the drill pipe assembly 2 is provided with two limiting parts 25 spaced vertically; two clamping blocks 8 are symmetrically arranged between the two limiting parts 25, and a shaft hole 81 for adapting to the outer wall of the drill pipe assembly 2 is provided between the two clamping blocks 8. The two clamping blocks 8 are mounted on the second bracket 300, thereby allowing the drill pipe assembly 2 to rotate relative to the second bracket 300, but not to have axial displacement relative to the second bracket 300. An oil reservoir 82 is suitable for being provided on the inner wall of the shaft hole 81 and the end face of the clamping blocks 8 for lubrication and heat dissipation. Furthermore, the two clamping blocks 8 can be locked together by installing bolts in the bolt holes 83 (e.g., ...). Figure 17 (As shown), alternatively, mounting nuts 86 can be provided on the mounting rod 85 that passes through the two clamping blocks 8, and the two clamping blocks 8 can be axially pressed together by the two mounting nuts 86 (as shown). Figure 18 (As shown). The clamping block 8 has elongated holes 84 extending vertically, with the length of the holes 84 parallel to the axis of the bolt holes 83. The clamping block 8 can be fixed to the second bracket 300 using bolts and the elongated holes 84. Alternatively, the clamping block 8 can also be indirectly installed and fixed using mounting rods 85 (e.g., ...). Figure 18 (As shown). Finally, by mounting a motor 600 on the second bracket 300, and connecting the output shaft of the motor 600 to the drill pipe assembly 2 via a transmission mechanism (not shown), the drill pipe assembly 2 can be driven to rotate automatically by the motor 600. Furthermore, since the casing assembly 1 does not need to rotate during well washing operations, its upper end can be fixed to the first bracket 200; however, to facilitate the addition of the casing section 10, the upper end of the casing assembly 1 is rotatably mounted on the first bracket 200. The rotatable mounting method of the casing assembly 1 is the same as that of the drill pipe assembly 2.

[0060] Understandably, in order to suit wells of different depths, such as Figure 22As shown, both the casing assembly 1 and the drill pipe assembly 2 are multi-section structures. The casing assembly 1 includes multiple casing sections 10, which are sequentially joined vertically (e.g., adjacent casing sections 10 are connected by threads). The drill pipe assembly 2 includes multiple drill pipe sections 20, which are sequentially joined vertically (e.g., adjacent drill pipe sections 20 are connected by threads). Figure 13 As shown, the upper end of the lowermost drill pipe section 20 is adapted to be higher than the upper end of the lowermost casing section 10.

[0061] It should be noted that the rotatable installation method between the drill bushing 3 and the casing assembly 1 is not limited in this application. For example, as Figure 4 , Figure 5 as well as Figure 9 As shown, the rotating component 9 includes a sleeve 91, a connecting rod 92, and an arc-shaped limiting strip 93; the number of sleeves 91 is suitable to be two, and the two sleeves 91 clamp and fix the outer wall of the drill bushing 3, thereby limiting the relative displacement between the sleeves 91 and the drill bushing 3; each sleeve 91 is equipped with a limiting strip 93 through the connecting rod 92, and the centers of the limiting strips 93 on the two sleeves 91 coincide; the limiting strip 93 is rotatably connected to the upper limiting groove 12 on the inner side wall of the casing assembly 1 (e.g., Figure 13 As shown, the limiting groove 12 allows the limiting strip 93 (i.e., the drill sleeve 3) to rotate, while also axially limiting the limiting strip 93 (i.e., the drill sleeve 3) (i.e., restricting the relative displacement between the drill sleeve 3 and the casing assembly 1 in the vertical direction).

[0062] To facilitate well cleaning operations on dedicated field monitoring wells, this well cleaning equipment is suitable for installation on a tracked transport chassis.

[0063] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A portable, multi-functional well-washing device, characterized in that, It includes a support frame, a first bracket, a second bracket, a casing assembly, a drill pipe assembly, a rotary joint, a drill sleeve, a drill bit, a jetting assembly, and a locking component; the first bracket is liftably mounted on the support frame, and the second bracket is liftably mounted on the first bracket; the upper end of the casing assembly is mounted on the first bracket; The drill bushing is rotatably disposed on the lower inner end of the casing assembly. The inner sidewall of the drill bushing is provided with a first chamber and a second chamber spaced vertically apart. An exhaust port is provided through the first chamber, and a drain port is provided through the second chamber. The drill bit is disposed at the lower end of the drill bushing, and the jetting assembly is disposed on the lower outer wall of the drill bushing, and the jetting assembly is connected to the drain port. Both the drill bit and the jetting assembly are located below the casing assembly, and the maximum distance of the drill bit from the central axis of the drill bushing is greater than the maximum distance of the jetting assembly from the central axis of the drill bushing. The drill rod assembly is coaxially arranged inside the casing assembly. The upper end of the drill rod assembly is rotatably mounted on the second bracket. The lower end of the drill rod assembly is rotatably and slidably mounted inside the drill sleeve, and a seal is formed between the outer wall of the drill rod assembly and the inner wall of the drill sleeve. A channel is formed inside the drill rod assembly, and the upper end of the channel is connected to a gas source or a water source through the rotary joint. The lower end of the channel is sealed, and a through hole is provided on the outer side wall of the lower end of the channel. The locking member is disposed between the drill rod assembly and the drill sleeve. The locking member is used to restrict relative rotation between the drill rod assembly and the drill sleeve, thereby driving the drill bit and the jet assembly to rotate by rotating the drill rod assembly. When the drill rod assembly moves upward relative to the casing assembly until the through hole communicates with the first chamber, the upper end of the channel is connected to the air source through the rotary joint. When the drill rod assembly moves downward relative to the casing assembly until the through hole communicates with the second chamber, the upper end of the channel is connected to the water source through the rotary joint.

2. The portable multi-functional well-washing equipment as described in claim 1, characterized in that, The end of the exhaust port extends upward.

3. The portable multi-functional well-washing equipment as described in claim 2, characterized in that, A cap is provided on the outer side wall at the lower end of the drill pipe assembly. When the through hole is connected to the first chamber, the cap is separated from the upper end of the exhaust port. When the through hole is connected to the second chamber, the cap is placed on the upper end of the exhaust port to seal the exhaust port.

4. The portable multi-functional well-washing equipment as described in claim 3, characterized in that, The outer side wall at the lower end of the drill pipe assembly is provided with a guide groove, the guide groove including an upper vertical section, a lower vertical section and an inclined section for connecting the upper vertical section and the lower vertical section; the locking member is provided through the outer side wall of the drill sleeve and is slidably connected to the guide groove. When the drill pipe assembly moves downward relative to the casing assembly until the locking member moves to the upper end of the upper vertical section, the cap covers the upper end of the vent. When the drill pipe assembly moves upward relative to the casing assembly until the locking member moves to the lower end of the upper vertical section, the cap separates from the upper end of the vent. When the drill pipe assembly continues to move upward relative to the casing assembly until the locking member moves along the inclined section into the lower vertical section, the locking member forces the drill sleeve to rotate relative to the drill pipe assembly through the inclined section, thereby causing the cap to be horizontally offset from the upper end of the vent.

5. The portable multi-functional well-washing equipment as described in claim 1, characterized in that, The spraying assembly includes a nozzle and an adjusting member. The nozzle is adapted to be inclinedly arranged on the outside of the drill sleeve, and the horizontal distance between each position of the nozzle along the axial direction and the drill sleeve is adapted to be equal. The nozzle is connected to the drain port, and a spray hole is provided on the side of the nozzle away from the drill sleeve. The adjusting member is disposed between the nozzle and the drill sleeve, and the adjusting member is used to adjust the horizontal distance between the nozzle and the drill sleeve.

6. The portable multi-functional well-washing equipment as described in claim 5, characterized in that, A sleeve extends horizontally from the nozzle near the drill bushing. The adjusting component of the drill bushing includes an insert, a locking nut, and a locking screw. The locking nut is fitted onto one end of the insert and threadedly connected to the drain port, thereby fixing the insert to the drain port. The other end of the insert is inserted into the sleeve, and the outer wall of the insert and the inner wall of the sleeve form a seal. The outer wall of the insert is adapted to have multiple slots. The locking screw is threadedly connected to the sleeve and engages in one of the slots. When the locking screw engages in different slots, the horizontal distance between the nozzle and the drill bushing is different.

7. The portable multi-functional well-washing equipment as described in claim 1, characterized in that, The drill bit includes a mounting part, a lower cutting edge, and a side cutting edge. The mounting part is detachably disposed at the lower end of the drill sleeve. One end of the lower cutting edge is disposed at the mounting part, and the other end of the lower cutting edge is disposed at the lower end of the side cutting edge.

8. The portable multi-functional well-washing equipment as described in claim 7, characterized in that, The upper surface of the lower shovel blade is provided with multiple breaking blades spaced apart along the length direction, and / or the side shovel blade has a spiral structure.

9. The portable multi-functional well-washing equipment as described in claim 1, characterized in that, The upper end of the casing assembly is provided with an annular retaining ring along the circumferential direction; the portable multi-functional well washing equipment also includes a drainage hood, which is disposed on the first support. The bottom inner part of the drainage hood has an annular portion protruding from it. The annular portion is fitted onto the outside of the casing assembly. The upper end of the annular portion is inserted into the inside of the annular retaining ring, and the annular portion is adapted to form a seal with the annular retaining ring and / or the casing assembly; the upper end of the drainage hood is provided with a clearance hole for passing through the drill pipe assembly, and the clearance hole forms a seal with the drill pipe assembly; the outer side of the drainage hood is provided with a drain outlet, and the height of the drain outlet is adapted to be lower than the height of the upper end of the annular portion.

10. The portable multi-functional well-washing equipment as described in claim 1, characterized in that, The portable multi-functional well washing equipment also includes a submersible pump, which is adapted to be detachably mounted on the outer arm of the casing assembly, and the maximum distance of the submersible pump from the central axis of the casing assembly is smaller than the maximum distance of the drill bit from the central axis of the casing assembly.

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