A recharging well wall cleaning device

Abstract

The present application relates to the technical field of well wall cleaning, and discloses a recharge well wall cleaning device, which comprises a hanging disc, a driving member, multiple groups of cleaning arms and an air bag. The hanging disc is connected with a hanging rope through the driving member. The cleaning arms are arranged along the circumference of the hanging disc. The air bag is located below the multiple groups of cleaning arms and is provided with an inflation interface. A rubber ring is fixedly sleeved on the outer edge of the air bag, and the rubber ring and the top wall of the air bag form an open accommodating annular groove. The accommodating annular groove formed by the air bag and the rubber ring arranged below the cleaning arms can directly receive and temporarily store the dirt and impurities scraped from the well wall during the cleaning process, so that the dirt and impurities are prevented from falling into the well bottom. This design solves the problem that the dirt is easily attached to the well wall or blocks the water filter pipe in the traditional cleaning method, and significantly improves the thoroughness and long-term effectiveness of the cleaning.

Description

Technical Field

[0001] This invention relates to the field of well wall cleaning technology, and more specifically to a well wall cleaning device for reinjection wells. Background Technology

[0002] In water-rich, highly permeable strata, to reduce the impact of large-scale groundwater extraction during engineering construction, mining, or other activities on the regional water environment, reinjection wells are often used to re-inject the extracted groundwater into the aquifer. This measure helps maintain groundwater levels, protect water resource balance, and mitigate environmental risks such as land subsidence. During long-term operation, the walls of reinjection wells are prone to deposits and sediment buildup, forming a layer of fouling that affects reinjection efficiency and cleanliness. Therefore, regular and effective cleaning of the well walls is crucial for maintaining reinjection capacity and ensuring project effectiveness. Currently, various technical solutions exist for well wall cleaning, such as the CN118237344B "A Reinjection Well Wall Cleaning Robot." This device uses a complex mechanism including a motor and cam rod to drive the cleaning components, causing them to rotate and reciprocate up and down to increase the contact area with the well wall. However, dirt and impurities scraped or washed down during the cleaning process fall directly to the bottom of the well and cannot be collected and discharged. These residual debris may re-adhere to the lower part of the well wall or clog the filter pipe with the water flow, causing secondary pollution, affecting the thoroughness of cleaning, and may have long-term adverse effects on subsequent reinjection operations. Summary of the Invention

[0003] The main objective of this invention is to provide a well wall cleaning device for reinjection wells, in order to solve the problem that residual debris in existing reinjection well wall cleaning robots may re-adhere to the lower part of the well wall or clog the filter pipe with the water flow, causing secondary pollution.

[0004] To achieve the above objectives, the present invention provides a well wall cleaning device for reinjection wells, comprising a lifting platform, a driving component, multiple sets of cleaning arms, and an airbag.

[0005] The hoisting platform is connected to a hoisting rope via a drive mechanism;

[0006] These cleaning arms are arranged circumferentially along the platform;

[0007] The airbag is located below the multiple cleaning arms and has an inflation port;

[0008] A rubber ring is fixedly fitted around the outer edge of the airbag, and the rubber ring and the top wall of the airbag form an open annular groove for receiving.

[0009] The cleaning arm is connected to the drive component and can be in an open and closed state under the drive of the drive component;

[0010] In the open position, the cleaning arm extends outward to make contact with the well wall.

[0011] Preferably, the driving component includes:

[0012] A vertical pipe, the bottom of which is connected to multiple sets of cleaning arms;

[0013] A receiving plate is coaxially fixed at the top of the vertical pipe;

[0014] A vertical hole is coaxially provided on the hanging plate for the vertical pipe to slide.

[0015] A U-shaped rod, the open end of which is hinged to the receiving plate, and the closed section is fixedly equipped with a lifting ring for connecting the lifting rope.

[0016] Preferably, each cleaning arm group includes:

[0017] A housing having two parallel sidewalls and a support plate connecting the two sidewalls;

[0018] A guide plate is fixedly connected to the bottom end of the vertical pipe, and an inclined groove is opened through the guide plate at an angle.

[0019] A sliding rod, with its two ends fixed to the top of two side wall panels respectively, slides within an inclined groove;

[0020] A hinge rod, whose two ends are respectively hinged to the hanging platform and the housing;

[0021] The lifting and lowering motion of the vertical tube is driven by the cooperation of the inclined groove and the slide rod, which drives the housing to move radially along the vertical tube, thereby switching these cleaning arms between the open and closed states.

[0022] Preferably, it also includes multiple traction ropes, each corresponding to a different housing, with the two ends of the traction ropes fixedly connected to the side wall of the housing and the top wall of the airbag, respectively.

[0023] Preferably, each receiving plate is fixedly provided with an arc-shaped plate, and the outer arc surface of the arc-shaped plate is provided with a brush;

[0024] In this case, the cleaning arms are in the open state, so that the arc-shaped plates together form a ring in the top view projection, and the ring is coaxial with the well wall;

[0025] When multiple cleaning arms are in the open position, the brushes come into contact with the well wall.

[0026] Preferably, the airbag has a cylindrical structure when inflated.

[0027] Preferably, an expansion tube is coaxially connected to the bottom end of the vertical pipe;

[0028] The expansion tube has at least two transverse holes circumferentially along its radial direction on its wall, and a control component is installed in each transverse hole;

[0029] Each control component includes a plate, a push rod, a stop block, a spring, and a limit plate;

[0030] The support plate is fixedly installed in the horizontal hole and has a support hole.

[0031] The push rod is slidably positioned within the support hole;

[0032] The abutment block is fixedly installed at one end of the push rod and has an inclined surface and a horizontal surface, with the inclined surface located directly below the horizontal surface;

[0033] The spring is sleeved on the push rod, with its two ends abutting against the abutment block and the support plate, respectively.

[0034] The limiting plate is fixedly installed at the other end of the push rod;

[0035] A control rod is coaxially fixed to the top wall of the airbag. The top of the control rod has a rounded corner structure, and a ring groove is opened on the rod body.

[0036] A synchronizing ring is slidably fitted inside the annular groove, and both ends of the synchronizing ring have chamfered structures;

[0037] The expansion tube can be inserted into the control lever;

[0038] The inclined surface of the abutment block can contact the chamfered structure of the synchronization ring.

[0039] Preferably, the inflation port is connected to an inflation hose, which passes through an eccentrically opened mounting hole on the hanging plate.

[0040] The beneficial effects of the above scheme are:

[0041] The annular groove formed by an airbag and rubber ring located beneath the cleaning arm directly collects and temporarily stores dirt and impurities scraped from the well wall during cleaning, preventing them from falling to the bottom. This design solves the problem of dirt easily re-adhering to the well wall or clogging the filter pipe in traditional cleaning methods, significantly improving the thoroughness and long-term effectiveness of cleaning. The rubber ring further enhances the seal with the well wall, ensuring that dirt effectively falls into the annular groove without overflowing. After cleaning, the device can be lifted to the ground by a hoisting rope for centralized cleaning of the dirt in the annular groove, preventing contaminants from remaining in the well, simplifying subsequent processing, and facilitating the maintenance of the well's continuous reinjection capacity. Attached Figure Description

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0043] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0044] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0045] Figure 3 yes Figure 2 Enlarged structural diagram of region A in the middle;

[0046] Figure 4 This is a cross-sectional structural schematic diagram of the present invention;

[0047] Figure 5 yes Figure 4 Enlarged structural diagram of region B in the middle;

[0048] Figure 6 This is a partial three-dimensional structural schematic diagram of the present invention;

[0049] Figure 7 This is a partial structural schematic diagram of another motion state of the present invention.

[0050] Explanation of reference numerals in the attached figures

[0051] 1. Hanging plate; 11. Vertical hole; 12. Mounting hole;

[0052] 2. Drive components; 21. Vertical pipe; 211. Expanding pipe; 2111. Horizontal hole; 22. Receiving plate; 23. U-shaped rod; 231. Lifting ring;

[0053] 3. Cleaning arm; 31. Housing; 311. Side wall panel; 312. Receiving plate; 32. Guide plate; 321. Inclined groove; 322. Arc plate; 3221. Brush; 33. Slide rod; 34. Hinge rod;

[0054] 4. Airbag; 41. Rubber ring; 42. Receiving annular groove; 43. Inflation interface; 431. Inflation hose; 44. Control lever; 441. Annular groove; 45. Synchronization ring; 450. Chamfered structure; 440. Rounded corner structure; 5. Traction rope;

[0055] 6. Control component; 61. Support plate; 611. Support hole; 62. Push rod; 63. Abutment block; 631. Inclined surface; 64. Spring; 65. Limiting plate; 632. Horizontal surface. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0057] Figures 1-6As shown, this embodiment provides a wellbore cleaning device for reinjection wells, suitable for straight wells, aiming to solve the problem of secondary pollution caused by scraped-off dirt falling directly to the bottom of the well in existing cleaning technologies. Figure 1 As shown, the reinjection well wall cleaning device includes a lifting platform 1, a drive unit 2, multiple cleaning arms 3, and an airbag 4. The lifting platform 1 is connected to the upper lifting rope via the drive unit 2. The multiple cleaning arms 3 are evenly arranged around the circumference of the lifting platform 1. The inflated airbag 4 has a cylindrical structure and is located below all the cleaning arms 3, with a rubber ring 41 fixedly fitted on its outer edge. The rubber ring 41 and the top wall of the airbag 4 together form an open-topped annular groove 42 for collecting dirt removed from the well wall. The airbag 4 is equipped with an inflation port 43, which is connected to an inflation hose 431, through which the airbag 4 is inflated or deflated.

[0058] The cleaning arm 3 is connected to the drive component 2 and can switch between an open and closed state under the drive of the drive component 2. When in the open state, the cleaning arm 3 extends radially outward, allowing its end cleaning component (considered a brush 3221) to contact the well wall. When in the closed state, the cleaning arm 3 retracts inward, facilitating its lowering into the well. Figure 2 As shown, the specific structure of the driving component 2 includes a vertical tube 21, a receiving plate 22, and a U-shaped rod 23. The bottom end of the vertical tube 21 is connected to all the cleaning arms 3, and the top end of the vertical tube 21 is coaxially fixed to the receiving plate 22. A vertical hole 11 is coaxially opened in the center of the hanging plate 1, and the vertical tube 21 can slide up and down within the vertical hole 11. The two ends of the opening of the U-shaped rod 23 are hinged to the receiving plate 22, and its closed section is fixedly provided with a lifting ring 231 for connecting an external lifting rope. By pulling or releasing the lifting rope, the vertical tube 21 can be driven to move up and down relative to the hanging plate 1. Figures 4-6 As shown, each set of cleaning arms 3 includes a housing 31, a guide plate 32, a slide rod 33, and a hinge rod 34. The housing 31 has two parallel side wall plates 311 and a receiving plate 312 that is fixedly connected to the two side wall plates 311. The guide plate 32 is fixedly connected to the bottom end of the vertical tube 21, and an inclined groove 321 is obliquely opened through it. The two ends of the slide rod 33 are respectively fixed to the top of the two side wall plates 311 of the housing 31, and the slide rod 33 is slidably disposed in the inclined groove 321 of the guide plate 32. The two ends of the hinge rod 34 are respectively hinged to the hanging plate 1 and the housing 31 (i.e., hinged to the top of the two side wall plates of the housing). When the vertical tube 21 is raised or lowered relative to the hanging plate 1, the axial movement of the vertical tube 21 is converted into the radial movement of the housing 31 along the vertical tube 21 through the sliding engagement of the inclined groove 321 and the slide rod 33, thereby realizing the synchronous opening or closing of all cleaning arms 3.

[0059] To enhance dirt collection and stabilize the position of the airbag 4, the present invention also includes multiple traction ropes 5. The upper end of each traction rope 5 is fixedly connected to the side wall plate 311 of the housing 31 of a cleaning arm 3, and the lower end is fixedly connected to the top wall of the airbag 4.

[0060] An arc-shaped plate 322 is fixedly installed on the outer side of each receiving plate 312. The heights of adjacent arc-shaped plates 322 are not the same. A brush 3221 is installed on the outer arc surface of the arc-shaped plate 322. When the multiple sets of cleaning arms 3 are in the fully extended state, all the arc-shaped plates 322 together form a complete ring in the top view projection. This ring is coaxial with the well wall, so that the brush 3221 can evenly and comprehensively contact and scrape the well wall.

[0061] like Figure 5 As shown, a capacity expansion tube 211 is coaxially connected to the bottom end of the vertical tube 21. At least two horizontal holes 2111 are radially formed on the circumference of the expansion tube 211, and a control component 6 is installed in each horizontal hole 2111. Each control component 6 includes a support plate 61, a push rod 62, a stop block 63, a spring 64, and a limiting plate 65. The support plate 61 is fixed inside the horizontal hole 2111 and has a support hole 611. The push rod 62 slides through the support hole 611. The stop block 63 is fixed to the end of the push rod 62 that extends into the expansion tube 211. The bottom end of the stop block 63 has an inclined surface 631, and the top end has a horizontal surface 632. The spring 64 is sleeved on the push rod 62, with its two ends abutting against the stop block 63 and the support plate 61 respectively, providing an inward elastic restoring force to the stop block 63. The limiting plate 65 is fixed to the other end (outer side) of the push rod 62 to prevent the push rod 62 from retracting completely.

[0062] like Figure 3 As shown, a control rod 44 is coaxially fixed to the center of the top wall of the airbag 4. The top of the control rod 44 is designed with a rounded corner structure 440, and an annular groove 441 is formed on its body. A synchronizing ring 45 is slidably fitted into the annular groove 441 and can slide along the annular groove 441. Both the upper and lower ends of the synchronizing ring 45 are machined with chamfered structures 450. The inner diameter of the expansion tube 211 is slightly larger than the outer diameter of the control rod 44, so that the control rod 44 can be inserted into the expansion tube 211. The inflation interface 43 is connected to the existing ground air source through an inflation hose 431. The inflation hose 431 passes through the mounting hole 12 eccentrically opened on the hanging plate 1 to avoid interfering with the movement of other components.

[0063] The working process of this invention is as follows:

[0064] Initially, the multiple sets of cleaning arms 3 are in a closed state, with gaps between adjacent arc-shaped plates 322, preventing them from contacting each other. At this time, the airbags 4 are in an uninflated, deflated state, and the rubber rings 41 are not inflated. Using existing ground winches, the hoisting rope is lowered, and the inflatable hose 431 also lowers the rope, initiating the lowering of the entire device into the well. During the lowering process... Figure 7 As shown, the inner end (horizontal surface 632) of the abutment block 63 extends under the action of the spring 64 and abuts against the inner top wall of the annular groove 441 area on the control rod 44. This abutting state keeps the multiple cleaning arms 3 in a closed state, the brush 3221 does not contact the well wall, and the rubber ring 41 of the airbag 4 also does not contact the well wall, thereby ensuring that the device can descend smoothly and unimpeded to the predetermined depth without cleaning the well wall.

[0065] When the device descends to the water surface inside the well, the rope lowering is paused. Air is supplied to the airbag 4 via the air inflator hose 431 from the ground air source. After the airbag 4 inflates, its outer rubber ring 41 is radially expanded, tightly adhering to the well wall. The airbag then floats on the water surface. Simultaneously, the annular groove 42 formed by the top wall of the airbag 4 and the rubber ring 41 is ready to receive any dirt scraped down from above.

[0066] Ground operators begin slowly unwinding the hoisting rope. The inclined surface 631 of the abutment block 63 in control component 6 begins to contact and slide relative to the chamfered structure 450 at the upper end of the synchronization ring 45 fitted on the control rod 44 (at this time, the inflated airbag is suspended on the water surface). Further, ground operators begin slowly winding up the hoisting rope. Simultaneously, the inflation hose 431 is wound up. The hoisting rope, via the U-shaped rod 23 and the receiving plate 22, first drives the vertical pipe 21 and the expansion pipe 211 upward relative to the hoisting platform 1. As the vertical pipe 21 rises, during the continued upward movement, the horizontal surfaces 632 of multiple abutment blocks 63 drive the synchronization ring 45 upward. At this point, the horizontal surfaces 632 abut against the chamfered structure 450 at the lower end until the synchronization ring 45 moves to the top of the ring groove 441. The synchronization ring 45 stops moving, causing the push rod 62 to move outward, forcing the abutment block 63 to separate from the synchronization ring 45 and the control rod. This upward movement releases the previous closed constraint on the cleaning arm 3. Meanwhile, the upward movement of the vertical pipe 21 is facilitated by the inclined groove 321 on the guide plate 32 and the sliding rod 33 on the housing 31, until all cleaning arms 3 are fully open. At this time, the brushes 3221 on all the arc plates 322 are in close contact with the well wall and form a cleaning ring coaxial with the well wall.

[0067] It should be noted that the vertical pipe 21 is connected to the hoisting rope via the drive component 2. During the lowering process, under its own weight, the hoisting rope, through the drive component 2, tends to drive the vertical pipe 21 to slide upward relative to the hoisting platform 1. At this time, the control rod 44 has been inserted into the expansion tube 211, and under the elastic force of the spring 64, as... Figure 7As shown, the horizontal surfaces 632 of multiple abutment blocks 63 extend out and abut against the top wall of the annular groove 441 area on the control rod 44, thereby restricting the upward movement of the vertical pipe 21 relative to the hanging plate 1, so that multiple cleaning arms 3 can be stably maintained in the closed state.

[0068] With the cleaning arm 3 extended, ground personnel lift the entire device upwards at a uniform speed. During lifting, brush 3221 continuously scrapes the well wall, removing dirt, biofilm, and other impurities. The scraped-off impurities fall downwards under gravity. Because the rubber ring 41 of the lower airbag 4 is sealed to the well wall, and the top wall of the airbag 4 forms an upward receiving surface, almost all the falling impurities are effectively collected in the receiving annular groove 42 at the top of the airbag 4, preventing them from passing through the device and falling to the bottom of the well. When the device is lifted to the wellhead, the dirt collected in the receiving annular groove 42 is finally cleaned on the ground.

[0069] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A recharging well wall cleaning device, characterized in that, Including a hanging disc (1), a driving part (2), a plurality of cleaning arms (3) and an air bag (4); The hanging disc (1) is connected with a hanging rope through the driving part (2); These cleaning arms (3) are arranged circumferentially on the hanging disc (1); The air bag (4) is located below a plurality of the cleaning arms (3), and is provided with an inflation interface (43); The outer edge of the air bag (4) is fixedly sleeved with a rubber ring (41), and the rubber ring (41) and the top wall of the air bag (4) form an open containing annular groove (42); These cleaning arms (3) are connected with the driving part (2) and can have an open state and a closed state under the driving of the driving part (2); In the open state, the cleaning arms (3) extend outward to be able to contact the well wall; The driving part (2) comprises: A vertical pipe (21) is connected with a plurality of the cleaning arms (3) at the bottom end; A receiving disc (22) is coaxially fixedly arranged at the top end of the vertical pipe (21); The hanging disc (1) is coaxially provided with a vertical hole (11) for sliding of the vertical pipe (21); A U-shaped rod (23) is hingedly connected with the receiving disc (22) at the open end, and the closed section is fixedly provided with a hanging ring (231) for connecting the hanging rope; Each of the cleaning arms (3) comprises: A shell (31) has two parallel side wall plates (311) and a receiving plate (312) fixedly connected with the two side wall plates (311); A guide plate (32) is fixedly connected with the bottom end of the vertical pipe (21), and an inclined slot (321) is obliquely and through arranged on the guide plate (32); A sliding rod (33) is fixedly arranged at the top of the two side wall plates (311) at both ends, and is slidingly arranged in the inclined slot (321); A hinge rod (34) is hingedly connected with the hanging disc (1) and the shell (31) at both ends; The vertical pipe (21) is driven to move radially along the vertical pipe (21) through the cooperation of the inclined slot (321) and the sliding rod (33), so that the cleaning arms (3) are switched between the open state and the closed state; Further comprising a plurality of traction ropes (5), each of the traction ropes (5) is correspondingly connected with the shell (31) and the top wall of the air bag (4); Each of the receiving plates (312) is fixedly provided with an arc-shaped plate (322), and the heights of the two adjacent arc-shaped plates (322) are different, and the outer arc surface of each arc-shaped plate (322) is provided with a brush (3221); When the plurality of cleaning arms (3) are in the open state, the arc-shaped plates (322) collectively form a ring body in the top view, and the ring body is coaxial with the well wall; When the plurality of cleaning arms (3) are in the open state, the brushes (3221) contact the well wall; The airbag (4) has a cylindrical structure when inflated; The bottom end of the vertical tube (21) is coaxially connected to an expansion tube (211). At least two transverse holes (2111) are provided on the circumference of the expansion tube (211) along its radial direction, and a control element (6) is provided in each transverse hole (2111). Each of the control components (6) includes a plate (61), a push rod (62), a stop block (63), a spring (64) and a limiting plate (65). The support plate (61) is fixedly installed in the transverse hole (2111) and has a support hole (611). The push rod (62) is slidably disposed within the support hole (611); The abutment block (63) is fixedly disposed at one end of the push rod (62) and has an inclined surface (631) and a horizontal surface (632), wherein the inclined surface (631) is located directly below the horizontal surface (632); The spring (64) is sleeved on the push rod (62), and its two ends abut against the abutment block (63) and the support plate (61) respectively. The limiting plate (65) is fixedly disposed at the other end of the push rod (62); A control rod (44) is coaxially fixed to the top wall of the airbag (4). The top of the control rod (44) is a rounded corner structure (440), and an annular groove (441) is opened on the rod body of the control rod (44). A synchronization ring (45) is slidably sleeved in the annular groove (441), and both ends of the synchronization ring (45) are chamfered structures (450). The expansion tube (211) can be inserted into the control rod (44); The inclined surface (631) of the abutment block (63) can contact the chamfered structure (450) of the synchronization ring (45).

2. The recharging well wall cleaning device of claim 1, wherein, The inflation port (43) is connected to an inflation hose (431), which passes through an eccentric mounting hole (12) on the hanging plate (1).

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