A wellbore cleaning device having a filter structure
By introducing a filtration structure and a recovery mechanism into the wellbore cleaning device, the problem of impurity blockage during the cleaning fluid recovery process is solved, achieving solid-liquid separation and automatic impurity removal, thereby improving the automation level and resource utilization of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGYANG HUAQING OIL & GAS COMPREHENSIVE TECH SERVICE CO LTD
- Filing Date
- 2025-10-09
- Publication Date
- 2026-07-24
Smart Images

Figure CN224550059U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of well cleaning technology, specifically a well cleaning device with a filtration structure. Background Technology
[0002] In daily life, many activities require the use of petroleum, which comes from oil extraction. Oil extraction requires deep extraction through wells, but wells also need to be cleaned after a period of use to prevent blockage. Therefore, a rotating cleaning and collection device for wells is proposed.
[0003] According to a public announcement of a rotating cleaning and collection device for well casing (Announcement No.: CN218816344U), the above application uses a pressurized water jet head 1 and a pressurized water jet head 2 to spray water, and collects the cleaned water through a flat suction head. The output mechanism includes a water pump 1, a motor, and a water pump 2. In use, the output mechanism can realize the rotating cleaning and collection inside the well casing. At the same time, a detachable connection component is provided between the rotating body and the driven gear of this device, and the user can detach the connection component to extend the device.
[0004] However, in actual use, when the second water pump recycles the cleaning fluid, it also draws up impurities, sand, and other debris generated in the cleaning chamber along with the cleaning fluid, causing blockage in the water tank. Furthermore, the cleaning fluid carrying impurities cannot be used, resulting in a significant waste of resources. In view of this, we propose a well cleaning device with a filtration structure. Utility Model Content
[0005] The purpose of this invention is to provide a wellbore cleaning device with a filtration structure to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A well cleaning device with a filtration structure includes a housing, a first water pump and a second water pump are fixedly connected to the upper surface of the housing, a recovery pipe is fixedly connected to the output end of the second water pump, and a filtration mechanism for solid-liquid separation of the cleaning fluid is provided inside the housing. The filtration mechanism includes: A filter cartridge, one end of which is fixedly connected to the end of the recovery pipe away from the second water pump, a mounting bracket is fixedly connected to the inner wall of the filter cartridge, a fixing sleeve is fixedly connected to the end of the mounting bracket near the recovery pipe, one end of a telescopic spring is fixedly connected to the bottom surface of the fixing sleeve, and a connecting sleeve is fixedly connected to the other end of the telescopic spring. The movable cylinder has its outer wall slidably connected to the inner wall of the filter cylinder. A screen is fixedly connected to the end of the movable cylinder away from the connecting sleeve. A water-permeable hole is opened at the end of the movable cylinder away from the screen. A sewage outlet is opened on the outer surface of the filter cylinder. A partition is fixedly connected to the bottom surface of the box. A water-permeable hole is opened through the side wall of the partition.
[0007] Preferably, the end of the movable cylinder near the mounting frame is fixedly connected to the end of the connecting sleeve away from the mounting frame, the end of the movable cylinder away from the mounting frame is set in a conical shape, and both the outer surfaces of the movable cylinder and the connecting sleeve are provided with sealing rings.
[0008] Preferably, the filter cartridge is L-shaped, and the mounting bracket is located at the long end of the L-shaped filter cartridge, and the movable cartridge is hollow.
[0009] Preferably, the interior of the box is equipped with a recycling mechanism for the unified recycling and treatment of waste residue and impurities. The recycling mechanism includes a movable door, and the box has a discharge chute. The inner wall of the discharge chute is slidably connected to the outer wall of the movable door. A fixed frame is fixedly connected to one end of the movable door near the box. A fixed shaft is fixedly connected to the side of the fixed frame away from the side wall of the box. One end of a spiral spring is fixedly connected to the outer wall of the fixed shaft. A connecting cylinder is fixedly connected to the other end of the spiral spring. A connecting arm is fixedly connected to the outer wall of the connecting cylinder. A scraper is fixedly connected to the side wall of the connecting arm.
[0010] Preferably, the inner sidewall of the housing is fixedly connected to a slide rail, and the sidewall of the movable door is slidably connected to the sidewall of the slide rail.
[0011] Preferably, the input end of the first water pump is fixedly connected to a return pipe, the output end of the first water pump is fixedly connected to one end of the input pipe, the other end of the input pipe is fixedly connected to a well cleaning assembly, the upper surface of the well cleaning assembly is fixedly connected to one end of an output pipe, and the other end of the output pipe is fixedly connected to the input end of the second water pump.
[0012] Preferably, a support frame is fixedly connected to the upper surface of the housing, a control motor is fixedly connected to the upper surface of the support frame, a transmission belt is driven to the output end of the control motor, and the inner wall of the transmission belt is driven to the connection end of the well cleaning assembly.
[0013] Compared with the prior art, the present invention provides a well cleaning device with a filtration structure, which has the following beneficial effects: 1. This well cleaning device with a filtration structure achieves efficient solid-liquid separation of the cleaning fluid through the coordinated design of the filter cylinder, movable cylinder, and screen. When the cleaning fluid enters the filter cylinder through the recovery pipe, the screen effectively intercepts solid impurities, while the liquid is discharged through the water-permeable holes on the movable cylinder, ensuring thorough filtration. When the impurities carried in the cleaning fluid slowly accumulate on the outer surface of the screen, the cleaning fluid will push the movable cylinder. Under the action of the telescopic spring, the movable cylinder can slide inside the filter cylinder. The movable cylinder sliding away from its original position will expose the drain port, facilitating the discharge of the accumulated material.
[0014] 2. This well cleaning device with a filtration structure, through the setting of a recovery mechanism and the linkage mechanism of the movable door, scraper and spiral spring, realizes the automatic collection and cleaning of the filtered waste residue. When the waste residue accumulates to a certain amount in the filtration mechanism, the movable door can slide open along the slide rail, and the spiral spring drives the connecting cylinder and scraper to move, scraping the waste residue into the discharge trough, thereby simplifying the waste residue treatment process. This design reduces the frequency and difficulty of manual cleaning, improves the automation level of the equipment, and ensures that the inside of the box is kept clean. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of one side of the cross-sectional view of the main structure of this utility model; Figure 3 This is a schematic diagram of the other side of the cross-section of the main structure of this utility model; Figure 4 This is a schematic cross-sectional view of the filter cylinder of this utility model. Figure 5 This is a schematic diagram of section A of the structure of this utility model.
[0016] In the diagram: 1. Housing; 2. First water pump; 21. Second water pump; 22. Output pipe; 23. Input pipe; 24. Return pipe; 25. Recovery pipe; 3. Control motor; 31. Transmission belt; 4. Well cleaning assembly; 5. Filtration mechanism; 51. Filter cylinder; 52. Mounting bracket; 53. Fixed sleeve; 54. Telescopic spring; 55. Connecting sleeve; 56. Movable cylinder; 57. Screen; 58. Water permeable hole; 59. Sewage outlet; 510. Water passage hole; 6. Recovery mechanism; 61. Movable door; 62. Fixed bracket; 63. Fixed shaft; 64. Scroll spring; 65. Connecting cylinder; 66. Connecting support arm; 67. Scraper. Detailed Implementation
[0017] like Figures 1-5As shown, this utility model provides a technical solution: a well cleaning device with a filtration structure, including a housing 1, a first water pump 2 and a second water pump 21 fixedly connected to the upper surface of the housing 1, a recovery pipe 25 fixedly connected to the output end of the second water pump 21, and a filtration mechanism 5 for solid-liquid separation of the cleaning liquid is provided inside the housing 1. The filtration mechanism 5 includes: a filter cylinder 51, a mounting frame 52, a fixing sleeve 53, a telescopic spring 54, a connecting sleeve 55, a movable cylinder 56, a screen 57, a water permeable hole 58, a sewage outlet 59, and a water passage hole 510.
[0018] In one embodiment of this utility model, one end of the filter cylinder 51 is fixedly connected to the end of the recovery pipe 25 away from the second water pump 21. A mounting bracket 52 is fixedly connected to the inner wall of the filter cylinder 51. A fixing sleeve 53 is fixedly connected to the end of the mounting bracket 52 near the recovery pipe 25. One end of a telescopic spring 54 is fixedly connected to the bottom surface of the fixing sleeve 53. A connecting sleeve 55 is fixedly connected to the other end of the telescopic spring 54. The outer wall of the movable cylinder 56 is slidably connected to the inner wall of the filter cylinder 51. A screen 57 is fixedly connected to the end of the movable cylinder 56 away from the connecting sleeve 55. A water-permeable hole 58 is provided at the end away from the screen 57. A drain outlet 59 is provided on the outer surface of the filter cylinder 51. A partition is fixedly connected to the bottom of the inner side of the housing 1. A water-permeable hole 510 is provided through the side wall of the partition. The end of the movable cylinder 56 near the mounting bracket 52 is fixedly connected to the end of the sleeve 55 away from the mounting bracket 52. The end of the movable cylinder 56 away from the mounting bracket 52 is set in a conical shape. Sealing rings are provided on the outer surfaces of the movable cylinder 56 and the connecting sleeve 55. The filter cylinder 51 is L-shaped, and the mounting bracket 52 is located at the long end of the L-shaped filter cylinder 51. 56 is hollow. When the second water pump 21 recovers the cleaned wastewater through the recovery pipe 25, it will first be injected into the interior of the filter cylinder 51. Impurities and gravel contained in the wastewater will be blocked by the screen 57 on the outer wall of the movable cylinder 56. The end of the movable cylinder 56 away from the mounting bracket 52 is set as a cone, which can better guide the accumulated impurities, so that the screen 57 always has some gaps for solid-liquid separation of wastewater. When the outer surface of the screen 57 is full, the wastewater will push the movable cylinder 56 to move, further affecting the extension spring 54. As the movable cylinder 56 moves, the drain port 59 on the outer wall of the filter cylinder 51 is exposed, facilitating the discharge of accumulated impurities. Subsequently, the movable cylinder 56, after discharge, loses the obstruction of impurities on the screen 57. At this time, the telescopic spring 54 pushes the movable cylinder 56 to reset, completing the next discharge operation. The wastewater after solid-liquid separation enters the other side of the box 1 through the water permeable hole 58 and the water passage hole 510 on the partition. The other side of the box 1 is equipped with a sedimentation and purification component, which can further purify the wastewater.
[0019] In addition, the interior of the housing 1 is equipped with a recycling mechanism 6 for the unified recycling and processing of waste residue and impurities. The recycling mechanism 6 includes a movable door 61. The housing 1 has a discharge chute, the inner wall of which is slidably connected to the outer wall of the movable door 61. A fixing frame 62 is fixedly connected to one end of the movable door 61 near the housing 1. A fixing shaft 63 is fixedly connected to the side of the fixing frame 62 away from the side wall of the housing 1. One end of a spiral spring 64 is fixedly connected to the outer wall of the fixing shaft 63. A connecting cylinder 65 is fixedly connected to the other end of the spiral spring 64. A connecting support arm 66 is fixedly connected to the outer wall of the connecting cylinder 65. A scraper 67 is fixedly connected to the side wall of the connecting support arm 66. The inner side wall of the housing 1 is fixedly connected to the scraper 67. The sliding door 61 is connected to a slide rail, and the side wall of the sliding door 61 is slidably connected to the side wall of the slide rail. A pull ring is provided at the end of the sliding door 61 away from the box body 1. The operator can open and close the sliding door 61 by pulling the ring. When the sliding door 61 slides along the slide rail, it will simultaneously drive the connecting support arm 66 and the scraper 67 to clean the inside of the box body 1. The bottom surface of the inside of the box body 1 is set to be lower near the sliding door 61 and higher away from the sliding door 61, which can make it easier to discharge impurities. Furthermore, through the setting of the spiral spring 64, the connecting cylinder 65, and the fixed shaft 63, the scraper 67 can always be in contact with the bottom surface of the inside of the box body 1 to achieve a better discharge effect.
[0020] In this embodiment of the invention, a return pipe 24 is fixedly connected to the input end of the first water pump 2, and one end of an input pipe 23 is fixedly connected to the output end of the first water pump 2. A well cleaning assembly 4 is fixedly connected to the other end of the input pipe 23. One end of an output pipe 22 is fixedly connected to the upper surface of the well cleaning assembly 4, and the other end of the output pipe 22 is fixedly connected to the input end of the second water pump 21. A support frame is fixedly connected to the upper surface of the housing 1, and a control motor 3 is fixedly connected to the upper surface of the support frame. A transmission belt 31 is driven to the output end of the control motor 3, and the inner wall of the transmission belt 31 is driven to the connection end of the well cleaning assembly 4. The first water pump 2 and... The return pipe 24 and the input pipe 23 can provide sufficient cleaning fluid to the well cleaning assembly 4 to ensure its normal operation. The second water pump 21, together with the output pipe 22 and the recovery pipe 25, can pump the wastewater and waste generated during the cleaning process. The well cleaning assembly 4 has the effect of cleaning and collecting inside the well. The well cleaning assembly 4 is equipped with a detachable connection component between the rotating body and the driven gear. Through the combination of the disassembly block, the diversion box, and the diversion pipe, the output mechanism outputs the wastewater. When the device needs to be extended, the user can disassemble the connection component and add a cleaning mechanism to extend the device and clean wells of different lengths.
[0021] In this invention, during use, the first water pump 2 pumps the cleaning fluid into the well cleaning assembly 4 through the input pipe 23 to clean the well. Then, the dirty liquid carrying impurities is pumped through the output pipe 22 by the second water pump 21 into the recovery pipe 25, and enters the filter cylinder 51 of the filtration mechanism 5. The dirty liquid first impacts the movable cylinder 56, and the impurities are intercepted by the screen 57. Due to the conical design of the movable cylinder 56, it flows towards the outer wall of the movable cylinder 56, providing sufficient filtration space for the screen 57. When the screen 57 becomes clogged, the water pressure impacts the movable cylinder 56, forcing the movable cylinder 56 to move along the extension spring 5. The direction of displacement 4 then exposes the drain outlet 59. Under the impact of the water flow, the impurities attached to the outer surface of the screen 57 are discharged through the drain outlet 59 along the conical movable cylinder 56. The filtered liquid passes through the water permeable hole 58 and the screen 57, and enters the other side of the tank 1 through the water passage hole 510 to settle. Finally, the clean liquid is recycled by the first water pump 2 through the return pipe 24 for reuse. The settled waste residue is processed by the recycling mechanism 6. When the movable door 61 is opened, the spiral spring 64 releases energy to drive the scraper 67 to always be close to the bottom surface of the tank 1, scraping the waste residue out of the tank 1.
[0022] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A well cleaning device with a filtration structure, comprising a housing (1), wherein a first water pump (2) and a second water pump (21) are fixedly connected to the upper surface of the housing (1), and a recovery pipe (25) is fixedly connected to the output end of the second water pump (21), characterized in that: The housing (1) is equipped with a filtration mechanism (5) for solid-liquid separation of the cleaning fluid. The filtration mechanism (5) includes: A filter cartridge (51) is fixedly connected at one end to the end of the recovery pipe (25) away from the second water pump (21). A mounting bracket (52) is fixedly connected to the inner wall of the filter cartridge (51). A fixing sleeve (53) is fixedly connected to the end of the mounting bracket (52) near the recovery pipe (25). One end of a telescopic spring (54) is fixedly connected to the bottom surface of the fixing sleeve (53). A connecting sleeve (55) is fixedly connected to the other end of the telescopic spring (54). The movable cylinder (56) has its outer wall slidably connected to the inner wall of the filter cylinder (51). A screen (57) is fixedly connected to one end of the movable cylinder (56) away from the connecting sleeve (55). A water-permeable hole (58) is opened at one end of the movable cylinder (56) away from the screen (57). A drain outlet (59) is opened on the outer surface of the filter cylinder (51). A partition is fixedly connected to the bottom of the box body (1). A water-permeable hole (510) is opened through the side wall of the partition.
2. The well cleaning device with a filtration structure according to claim 1, characterized in that: The movable cylinder (56) is fixedly connected to the end of the connecting sleeve (55) away from the mounting frame (52) at the end of the movable cylinder (56) near the mounting frame (52). The end of the movable cylinder (56) away from the mounting frame (52) is set in a conical shape, and the outer surfaces of the movable cylinder (56) and the connecting sleeve (55) are both provided with sealing rings.
3. A well cleaning device with a filtration structure according to claim 1, characterized in that: The filter cylinder (51) is L-shaped, and the mounting bracket (52) is located at the long end of the L-shaped filter cylinder (51). The movable cylinder (56) is hollow.
4. A well cleaning device with a filtration structure according to claim 1, characterized in that: The box (1) is equipped with a recycling mechanism (6) for the unified recycling and treatment of waste residue and impurities. The recycling mechanism (6) includes a movable door (61). The box (1) has a discharge trough. The inner wall of the discharge trough is slidably connected to the outer wall of the movable door (61). A fixed frame (62) is fixedly connected to one end of the movable door (61) near the box (1). A fixed shaft (63) is fixedly connected to the side of the fixed frame (62) away from the side wall of the box (1). One end of a spiral spring (64) is fixedly connected to the outer wall of the fixed shaft (63). A connecting cylinder (65) is fixedly connected to the other end of the spiral spring (64). A connecting arm (66) is fixedly connected to the outer wall of the connecting cylinder (65). A scraper (67) is fixedly connected to the side wall of the connecting arm (66).
5. A well cleaning device with a filtration structure according to claim 4, characterized in that: The inner side wall of the box (1) is fixedly connected to a slide rail, and the side wall of the movable door (61) is slidably connected to the side wall of the slide rail.
6. A well cleaning device with a filtration structure according to claim 1, characterized in that: The input end of the first water pump (2) is fixedly connected to a return pipe (24), the output end of the first water pump (2) is fixedly connected to one end of an input pipe (23), the other end of the input pipe (23) is fixedly connected to a well cleaning assembly (4), the upper surface of the well cleaning assembly (4) is fixedly connected to one end of an output pipe (22), and the other end of the output pipe (22) is fixedly connected to the input end of the second water pump (21).
7. A well cleaning device with a filtration structure according to claim 6, characterized in that: A support frame is fixedly connected to the upper surface of the housing (1), and a control motor (3) is fixedly connected to the upper surface of the support frame. A transmission belt (31) is driven to the output end of the control motor (3), and the inner wall of the transmission belt (31) is driven to the connection end of the well cleaning assembly (4).