A method for unblocking a downhole filling pipeline and its anti-clogging bend connection pipe.

Abstract

This invention relates to the field of filling pipeline technology, and discloses an anti-clogging bend connecting pipe and a clearing method for downhole filling pipelines. The invention includes a bend body and multiple cleaning mechanisms disposed at the bend of the bend body. The bend body is used to connect at right-angle turns, and monitoring components are respectively disposed at both ends of the bend body. An installation pipe is fixedly connected to the side wall of the bend body, with both ends open and communicating with the inner cavity of the bend body. A sliding column is slidably fitted inside the installation pipe, with one end of the sliding column extending into the bend body and fixedly connected to a cover. Multiple cleaning rods are circumferentially disposed on the cover via a retraction component. A rotation drive component is disposed on the side wall of the installation pipe located outside the bend body, and is used to drive the sliding column to rotate. A push handle is disposed at the end of the sliding column away from the bend body. This invention can effectively clear blockages in the inner cavity of the bend body while avoiding occupying a large space within the bend body.

Description

Technical Field

[0001] This invention relates to the field of filling pipeline technology, and in particular to an anti-clogging bend connecting pipe and a method for clearing blockages in downhole filling pipelines. Background Technology

[0002] Bend-type connecting pipes are generally used to connect two pipes that need to bend. During grouting in underground goaf areas, the flow velocity at the bend-type connecting pipe suddenly drops, which can easily cause particles to accumulate at the pipe connection, resulting in pipe blockage and causing the construction work to stop. The existing method is usually to disassemble the bend-type connecting pipe to clear the blockage, which is time-consuming, labor-intensive and very inconvenient. Another method is to directly install a cleaning structure inside the bend-type connecting pipe to directly clear the blockage from the inside. However, the existing cleaning structure usually occupies a lot of space in the inner cavity of the bend-type connecting pipe, which can also affect the flow of the filling medium. Summary of the Invention

[0003] The purpose of this invention is to provide an anti-clogging bend connecting pipe for downhole filling pipelines and a method for clearing blockages, aiming to solve or improve at least one of the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides an anti-clogging bend connecting pipe for downhole filling pipelines, including a bend body and a plurality of cleaning mechanisms disposed at the bend of the bend body;

[0005] The bend body is used to connect at a right-angle turn, and monitoring components are respectively provided at both ends of the bend body;

[0006] The cleaning mechanism includes:

[0007] An installation tube is fixedly connected to the side wall of the bent pipe body, with both ends of the installation tube open and communicating with the inner cavity of the bent pipe body.

[0008] A sliding column is slidably fitted inside the mounting tube. One end of the sliding column extends into the body of the bent tube and is fixedly connected to a cover. Multiple cleaning rods are circumferentially arranged on the cover through a retractable assembly.

[0009] A rotary drive assembly is disposed on the side wall of the mounting tube located on the outside of the bent tube body, and the rotary drive assembly is used to drive the sliding column to rotate;

[0010] A push handle is located at the end of the sliding column away from the bend body.

[0011] Optionally, the retraction component includes:

[0012] Multiple connecting rods, each corresponding to one of the cleaning rods, are slidably inserted through the sidewall of the housing.

[0013] Multiple guide posts are slidably disposed within the housing, and each of the multiple guide posts is connected to a multiple of the connecting rods;

[0014] The rotating rod is rotatably connected to the sliding column via the first rotating seat. One end of the rotating rod extends into the cover and is fixedly connected to a turntable. The turntable has multiple arc-shaped guide grooves circumferentially open. The multiple arc-shaped guide grooves correspond one-to-one with the multiple guide columns and slide in cooperation.

[0015] Optionally, multiple guide slides are fixedly connected inside the housing, and guide sliders are slidably fitted inside the guide slides. The multiple guide sliders correspond one-to-one with and are fixedly connected to the multiple guide posts. The multiple guide sliders correspond one-to-one with the multiple connecting rods and are fixedly connected by springs.

[0016] Optionally, a first spiral groove is provided on the side wall of the rotating rod away from the cover, and a first spiral slider is slidably fitted in the first spiral groove. The first spiral slider is fixedly connected to a push-pull locking assembly.

[0017] Optionally, the push-pull locking assembly includes:

[0018] The second rotating seat is fixedly connected to the first spiral slider;

[0019] The screw is fixedly connected to the sliding column;

[0020] A threaded sleeve is threadedly engaged with the screw, and a third rotating seat is rotatably connected to the threaded sleeve, the third rotating seat being fixedly connected to the second rotating seat.

[0021] Optionally, the rotary drive assembly includes:

[0022] A fixing rod is fixedly connected to the mounting tube. A second spiral groove is provided on the fixing rod, and a second spiral slider is slidably fitted in the second spiral groove.

[0023] A connecting sleeve is fixedly connected to the second spiral slider, and a fourth rotating seat is rotatably connected to the connecting sleeve. The fourth rotating seat is fixedly connected to the push handle.

[0024] The first gear is fixedly connected to the connecting sleeve;

[0025] The second gear meshes with the first gear, and the second gear is fixedly connected to the sliding column;

[0026] The fifth rotating seat is rotatably connected to the sliding column, and the fifth rotating seat is fixedly connected to the push handle.

[0027] Optionally, mounting flanges are provided at both ends of the bend body.

[0028] Optionally, the cleaning rod is an arc-shaped cylindrical rod.

[0029] Optionally, the monitoring components include a pressure sensor and a flow rate sensor.

[0030] This invention also provides a method for clearing blockages in anti-blockage bend connecting pipes for downhole filling pipelines, comprising the following steps:

[0031] The monitoring component monitors the flow state of the filling medium inside the bend body in real time.

[0032] The retractable assembly causes the plurality of cleaning rods to extend radially;

[0033] The rotary drive assembly drives the sliding column to rotate, which in turn causes the multiple cleaning rods to rotate synchronously.

[0034] Pulling the push handle causes the multiple cleaning rods to move back and forth within the curved pipe body to clear and unclog the blockage.

[0035] This invention discloses the following technical effects: By monitoring the flow and pressure status at both ends of the bend body through the monitoring component, when the status is abnormal, the retraction component causes multiple cleaning rods to expand radially, and the rotary drive component drives the sliding column to rotate, causing multiple cleaning rods to rotate synchronously. Then, the push handle is pulled to cause multiple cleaning rods to move back and forth within the bend body for unblocking and cleaning. After unblocking and cleaning is completed, the push handle is pulled back to reset the cover to one side of the bend body's inner cavity, and the retraction component causes multiple cleaning rods to retract radially, thereby reducing the space occupied within the bend body's inner cavity. This achieves the goal of effectively unblocking and cleaning the bend body's inner cavity while avoiding occupying a large space within the bend body's inner cavity, allowing the filling medium within the bend body to maintain a good flow state. Attached Figure Description

[0036] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the cleaning mechanism structure of the present invention;

[0039] Figure 3 This is a cross-sectional view of the sliding column and the housing of the present invention;

[0040] Figure 4for Figure 3 The right view.

[0041] In the diagram: 1. Bent pipe body; 2. Mounting pipe; 3. Sliding column; 4. Cover; 5. Cleaning rod; 6. Push handle; 7. Connecting rod; 8. Guide column; 9. Rotating rod; 10. Turntable; 11. Arc-shaped guide groove; 12. Guide slide; 13. Guide slider; 14. Spring; 15. First spiral groove; 16. Second rotating seat; 17. Screw; 18. Threaded sleeve; 19. Third rotating seat; 20. Fixed rod; 21. Second spiral groove; 22. Connecting sleeve; 23. Fourth rotating seat; 24. First gear; 25. Second gear; 26. Fifth rotating seat; 27. Mounting flange; 28. Pressure sensor; 29. ​​Flow rate sensor; 30. First rotating seat. Detailed Implementation

[0042] Existing Chinese patent CN112483753A discloses an anti-clogging curved connecting pipe. When the curved connecting pipe is blocked by silt, the silt accumulates gradually, causing the fibers of the elastic rope to fill the silt. When the worker pulls the rope through the pull ring, the rope drives the first piston to slide upward in the hydraulic cylinder. Through the action of hydraulic oil in the hydraulic chamber, the second piston slides upward in the hydraulic cylinder, thus stretching the elastic rope. The fibers then move the silt, and after several pulls, the silt in the curved connecting pipe is loosened. Then, the water flowing into the curved connecting pipe carries away the blockage. This eliminates the need to disassemble the curved connecting pipe to clean the blockage, saving time and effort, and is convenient and quick. Furthermore, the method of using the first piston to pull the elastic rope on the second piston through hydraulic oil, this indirect method of pulling the elastic rope, fully ensures the sealing of the connection between the inner connecting pipe and the unblocking mechanism.

[0043] Existing Chinese patent CN118669649A discloses an anti-clogging bend pipe for sewage treatment. When the bend pipe is in use, treated sewage is introduced into it. When excessive impurities accumulate at the corners of the bend pipe, the sewage flows through the first filter screen into the straight pipe. As the sewage passes through the straight pipe, a water wheel, propelled by the sewage, drives a rotating rod to rotate within the straight pipe. This rotating rod, driven by a rotating unit, rotates alternately in both directions within the bend pipe, causing a cutter to rotate synchronously in both directions. Therefore, impurities accumulated at the corners of the bend pipe are shredded by the cutter, preventing small debris from accumulating within the bend pipe. The shredded impurities are then washed away by the water flow through the second filter screen. During the rotation of the rotating rod inside the straight pipe, the rotating rod can drive two sets of sliding parts to slide in the same direction in the sliding groove through the reciprocating unit. Under the action of the unblocking unit, the airflow is sprayed from the end of the jet pipe to the surface of the second filter screen through the connecting pipe, thereby cleaning the second filter screen and improving the efficiency of the shredded impurities passing through the second filter screen.

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] Reference Figures 1-4 The present invention provides an anti-clogging bend connecting pipe for downhole filling pipeline, including a bend body 1 and a plurality of cleaning mechanisms disposed at the bend of the bend body 1.

[0047] The bend body 1 is used to connect at the right-angle bend, and monitoring components are respectively provided at both ends of the bend body 1;

[0048] Cleanup agencies include:

[0049] Installation tube 2 is fixedly connected to the side wall of the bent pipe body 1. Both ends of the installation tube 2 are open and connected to the inner cavity of the bent pipe body 1.

[0050] The sliding column 3 is slidably fitted inside the mounting tube 2. One end of the sliding column 3 extends into the bent tube body 1 and is fixedly connected to the cover 4. Multiple cleaning rods 5 are circumferentially arranged on the cover 4 through the retraction component.

[0051] A rotary drive assembly is installed on the side wall of the mounting tube 2 located on the outside of the bent tube body 1. The rotary drive assembly is used to drive the sliding column 3 to rotate.

[0052] Push handle 6, which is located at the end of sliding column 3 away from the bend body 1.

[0053] The flow and pressure at both ends of the bend body 1 are monitored by the monitoring component. When the condition is abnormal, the retraction component causes multiple cleaning rods 5 to expand radially, and the rotary drive component drives the sliding column 3 to rotate, causing multiple cleaning rods 5 to rotate synchronously. Then, the push handle 6 is pulled to cause multiple cleaning rods 5 to move back and forth within the bend body 1 for unblocking and cleaning. After unblocking and cleaning, the push handle 6 is pulled back to reset the cover 4 to one side of the inner cavity of the bend body 1, and the retraction component causes multiple cleaning rods 5 to retract radially, thereby reducing the space occupied in the inner cavity of the bend body 1. This achieves the goal of effectively unblocking and cleaning the inner cavity of the bend body 1 while avoiding occupying a large space in the inner cavity of the bend body 1, so that the filling medium in the bend body 1 can maintain a good flow state.

[0054] In one embodiment of the present invention, the retraction / extension component includes:

[0055] Multiple connecting rods 7 correspond one-to-one with multiple cleaning rods 5, and the connecting rods 7 slide through the side wall of the cover 4;

[0056] Multiple guide posts 8 are slidably disposed inside the housing 4, and the multiple guide posts 8 are connected one by one to multiple connecting rods 7;

[0057] The rotating rod 9 is rotatably connected to the sliding column 3 via the first rotating seat 30. One end of the rotating rod 9 extends into the cover 4 and is fixedly connected to the turntable 10. The turntable 10 has multiple arc-shaped guide grooves 11 circumferentially. The multiple arc-shaped guide grooves 11 correspond one-to-one with the multiple guide columns 8 and slide in cooperation.

[0058] By rotating the rotating rod 9, the rotating rod 9 drives the turntable 10 to rotate, thereby actuating multiple guide posts 8 through multiple arc-shaped guide grooves 11 on the turntable 10, causing the guide posts 8 to slide horizontally. This sliding of the guide posts 8 drives the connecting rod 7 to slide synchronously, thereby adjusting the extension and retraction of the cleaning rod 5. The expansion and contraction of multiple cleaning rods 5 can be achieved simply by controlling the forward and reverse rotation of the rotating rod 9.

[0059] Furthermore, the cover 4 has a through hole that restricts the sliding direction of the connecting rod 7, and a sealing measure, such as a sealing ring, is provided between the through hole and the connecting rod 7.

[0060] In one embodiment of the present invention, a plurality of guide slides 12 are fixedly connected inside the cover 4, and guide sliders 13 are slidably fitted inside the guide slides 12. The plurality of guide sliders 13 correspond one-to-one with a plurality of guide posts 8 and are fixedly connected. The plurality of guide sliders 13 correspond one-to-one with a plurality of connecting rods 7 and are fixedly connected by springs 14.

[0061] By setting guide slide 12 and guide slider 13, the sliding direction of guide post 8 is limited, and spring 14 is set between guide slider 13 and connecting rod 7, so that connecting rod 7 has a certain elastic effect, thereby adapting to the arc surface structure of the inner cavity of the bent pipe body 1, so that cleaning rod 5 can effectively contact the inner wall of different positions of bent pipe body 1.

[0062] In one embodiment of the present invention, a first spiral groove 15 is provided on the side wall of the rotating rod 9 away from the cover 4, a first spiral slider is slidably fitted in the first spiral groove 15, and a push-pull locking component is fixedly connected to the first spiral slider.

[0063] In one embodiment of the present invention, the push-pull locking assembly includes:

[0064] The second rotating seat 16 is fixedly connected to the first spiral slider;

[0065] Screw 17 is fixedly connected to sliding post 3;

[0066] The threaded sleeve 18 is threadedly engaged with the screw 17, and a third rotating seat 19 is rotatably connected to the threaded sleeve 18. The third rotating seat 19 is fixedly connected to the second rotating seat 16.

[0067] By rotating the threaded sleeve 18, the threaded sleeve 18 slides along the screw 17, thereby the second rotating seat 16 is fixedly connected to the third rotating seat 19, causing the second rotating seat 16 to drive the first helical slider to move along the first helical groove 15. Thus, through the helical engagement of the first helical slider and the first helical groove 15, the rotating rod 9 rotates, and the rotation of the rotating rod 9 is restricted by the threaded locking of the threaded sleeve 18 and the screw 17.

[0068] In one embodiment of the present invention, the rotary drive assembly includes:

[0069] The fixing rod 20 is fixedly connected to the mounting tube 2. The fixing rod 20 has a second spiral groove 21, and a second spiral slider is slidably fitted in the second spiral groove 21.

[0070] The connecting sleeve 22 is fixedly connected to the second spiral slider, and the connecting sleeve 22 is rotatably connected to the fourth rotating seat 23, which is fixedly connected to the push handle 6.

[0071] The first gear 24 is fixedly connected to the connecting sleeve 22;

[0072] The second gear 25 meshes with the first gear 24, and the second gear 25 is fixedly connected to the sliding column 3;

[0073] The fifth rotating seat 26 is rotatably connected to the sliding column 3, and the fifth rotating seat 26 is fixedly connected to the push handle 6.

[0074] By pulling and pushing the handle 6, since the fifth rotating seat 26 and the fourth rotating seat 23 are both fixedly connected to the handle 6, the sliding column 3 and the connecting sleeve 22 are pulled to move synchronously. The sliding column 3 and the fifth rotating seat 26 are in rotational engagement, and the connecting sleeve 22 and the fourth rotating seat 23 are in rotational engagement. This allows the sliding column 3 and the connecting sleeve 22 to remain rotatable during translation. When the connecting sleeve 22 translates along the fixed rod 20, the connecting sleeve 22 rotates through the helical engagement of the second helical groove 21 and the second helical slider, thereby driving the first gear 24 to rotate. In turn, the first gear 24 drives the meshing second gear 25 to rotate, thereby driving the sliding column 3 to rotate. This achieves the reciprocating translation and rotation of the sliding column 3 simply by pulling and pushing the handle 6 back and forth.

[0075] In one embodiment of the present invention, mounting flanges 27 are respectively provided at both ends of the bend body 1 for connecting with other pipes.

[0076] In one embodiment of the present invention, the cleaning rod 5 is an arc-shaped cylindrical rod. The arc-shaped structure can adapt to the arc-shaped surface of the cover 4 when it is contracted. The cylindrical rod structure can adapt to the extension and retraction after it abuts against the arc-shaped surface of the inner cavity of the bent tube body 1.

[0077] In one embodiment of the present invention, the monitoring component includes a pressure sensor 28 and a flow rate sensor 29, which are used to record and process sensing signals such as pressure difference and flow rate difference inside the pipeline, and trigger an alarm in abnormal conditions.

[0078] Furthermore, the installation tube 2 and the sliding column 3 are interference-fitted to prevent the filling medium from entering the installation tube 2 when the sliding column 3 slides.

[0079] This invention also provides a method for clearing blockages in anti-blockage bend connecting pipes for downhole filling pipelines, comprising the following steps:

[0080] The monitoring component monitors the flow state of the filling medium inside the bend body 1 in real time. When the flow state of the filling medium inside the bend body 1 is abnormal;

[0081] The retractable assembly causes multiple cleaning rods 5 to expand radially. Specifically, by rotating the threaded sleeve 18, the threaded sleeve 18 slides along the screw 17. The first helical slider and the first helical groove 15 drive the rotating rod 9 to rotate. The rotating rod 9 drives the turntable 10 to rotate, thereby actuating multiple guide posts 8 through multiple arc-shaped guide grooves 11 on the turntable 10. This causes the guide posts 8 to slide horizontally, and the sliding of the guide posts 8 drives the connecting rod 7 to slide synchronously.

[0082] The sliding column 3 is driven to rotate by the rotary drive assembly, which in turn drives multiple cleaning rods 5 to rotate synchronously. Pulling and pushing the handle 6 causes the multiple cleaning rods 5 to move back and forth within the bent pipe body 1 for unblocking and cleaning. Specifically, by pulling and pushing the handle 6, the sliding column 3 and the connecting sleeve 22 are moved synchronously. When the connecting sleeve 22 moves along the fixed rod 20, the connecting sleeve 22 rotates through the helical engagement of the second spiral groove 21 and the second spiral slider, thereby driving the first gear 24 to rotate. The first gear 24 then drives the meshing second gear 25 to rotate, thereby driving the sliding column 3 to rotate. This achieves the reciprocating translation and rotation of the sliding column 3 simply by pulling and pushing the handle 6 back and forth.

[0083] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0084] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A clog-resistant bend connecting pipe for downhole filling pipelines, characterized in that, It includes a bend body (1) and multiple cleaning mechanisms disposed at the bend of the bend body (1); The bend body (1) is used to connect at the right-angle bend, and monitoring components are respectively provided at both ends of the bend body (1); The cleaning mechanism includes: The mounting tube (2) is fixedly connected to the side wall of the bent tube body (1), and both ends of the mounting tube (2) are open and connected to the inner cavity of the bent tube body (1); A sliding column (3) is slidably fitted inside the mounting tube (2). One end of the sliding column (3) extends into the bent tube body (1) and is fixedly connected to a cover (4). Multiple cleaning rods (5) are circumferentially arranged on the cover (4) through the retraction assembly. A rotary drive assembly is disposed on the side wall of the mounting tube (2) located outside the bent tube body (1), and the rotary drive assembly is used to drive the sliding column (3) to rotate; Push the handle (6), which is located at the end of the sliding column (3) away from the bent tube body (1); The rotation drive assembly includes: A fixing rod (20) is fixedly connected to the mounting tube (2). A second spiral groove (21) is provided on the fixing rod (20), and a second spiral slider is slidably fitted in the second spiral groove (21). A connecting sleeve (22) is fixedly connected to the second spiral slider. The connecting sleeve (22) is rotatably connected to a fourth rotating seat (23). The fourth rotating seat (23) is fixedly connected to the push handle (6). The first gear (24) is fixedly connected to the connecting sleeve (22); The second gear (25) meshes with the first gear (24), and the second gear (25) is fixedly connected to the sliding column (3); The fifth rotating seat (26) is rotatably connected to the sliding column (3), and the fifth rotating seat (26) is fixedly connected to the push handle (6).

2. The anti-clogging bend connecting pipe for downhole filling pipelines according to claim 1, characterized in that, The retraction / extension components include: Multiple connecting rods (7) correspond one-to-one with multiple cleaning rods (5), and the connecting rods (7) slide through the side wall of the cover (4); Multiple guide posts (8) are slidably disposed inside the housing (4), and the multiple guide posts (8) are connected one by one to the multiple connecting rods (7); The rotating rod (9) is rotatably connected to the sliding column (3) through the first rotating seat (30). One end of the rotating rod (9) extends into the cover (4) and is fixedly connected to the turntable (10). The turntable (10) has multiple arc-shaped guide grooves (11) circumferentially opened. The multiple arc-shaped guide grooves (11) correspond one-to-one with the multiple guide columns (8) and slide in cooperation.

3. The anti-clogging bend connecting pipe for downhole filling pipelines according to claim 2, characterized in that, Multiple guide slides (12) are fixedly connected inside the cover (4). Guide sliders (13) are slidably fitted inside the guide slides (12). Multiple guide sliders (13) correspond one-to-one with multiple guide posts (8) and are fixedly connected. Multiple guide sliders (13) correspond one-to-one with multiple connecting rods (7) and are fixedly connected by springs (14).

4. The anti-clogging bend connecting pipe for downhole filling pipelines according to claim 2, characterized in that, The rotating rod (9) has a first spiral groove (15) on the side wall away from the cover (4). A first spiral slider is slidably fitted in the first spiral groove (15). The first spiral slider is fixedly connected to a push-pull locking assembly.

5. A clog-resistant bend connecting pipe for downhole filling pipelines according to claim 4, characterized in that, The push-pull locking assembly includes: The second rotating seat (16) is fixedly connected to the first spiral slider; The screw (17) is fixedly connected to the sliding column (3); A threaded sleeve (18) is threadedly engaged with the screw (17), and a third rotating seat (19) is rotatably connected to the threaded sleeve (18). The third rotating seat (19) is fixedly connected to the second rotating seat (16).

6. The anti-clogging bend connecting pipe for downhole filling pipelines according to claim 1, characterized in that, The two ends of the bend body (1) are respectively provided with mounting flanges (27).

7. The anti-clogging bend connecting pipe for downhole filling pipelines according to claim 1, characterized in that, The cleaning rod (5) is an arc-shaped cylindrical rod.

8. The anti-clogging bend connecting pipe for downhole filling pipelines according to claim 1, characterized in that, The monitoring components include a pressure sensor (28) and a flow rate sensor (29).

9. A method for clearing blockages in a downhole filling pipeline anti-blockage bend connecting pipe, based on the anti-blockage bend connecting pipe for a downhole filling pipeline according to any one of claims 1-8, characterized in that, Includes the following steps: The monitoring component monitors the flow state of the filling medium inside the bent pipe body (1) in real time; The retracting assembly causes the plurality of cleaning rods (5) to extend radially; The sliding column (3) is driven to rotate by the rotary drive assembly, which in turn drives the multiple cleaning rods (5) to rotate synchronously; Pulling the push handle (6) causes the multiple cleaning rods (5) to move back and forth within the bent pipe body (1) to clear and unclog.

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