Conveying device for downwards and vertically conveying concrete and using method

Abstract

The invention discloses a conveying device for downwards and vertically conveying concrete and a using method, and relates to the technical field of civil building construction. The mounting pipe is arranged between the two conveying pipelines and is used for communicating the two conveying pipelines; the baffles are arranged at intervals in the axial direction of the mounting pipe to form a plurality of cavities, and a pipeline is arranged between every two adjacent baffles and used for communicating every two adjacent cavities located in the corresponding cavity of the pipeline; in the concrete conveying process, concrete is divided through the round holes and the square holes of the baffles, the main flow and the branch flow enter different channels correspondingly to obtain angular force in different directions and then are subjected to hedging and mixing, the baffles and the channels are sequentially arranged, multiple times of hedging and mixing of the concrete in the downward conveying process are achieved, and the concrete conveying efficiency is improved. The mixing uniformity of the concrete is greatly ensured, and the segregation phenomenon of the concrete is effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of civil building construction, and in particular to a conveying device for conveying concrete vertically downward and a use method thereof. Background Art

[0002] In the field of civil construction engineering, high-rise buildings are an important type of civil buildings. High-rise buildings are mainly used to meet the demand for residential and office space caused by the growing urban population. They usually have a higher number of floors and a larger building area. With the increasing number of high-rise building construction projects, the vertical transportation of concrete has become a crucial link in the construction process.

[0003] At present, common methods of vertically conveying concrete include chutes and pumps. During the downward conveying process, coarse aggregates have a large mass and a fast speed during the falling process, and tend to fall to the bottom first, while lighter components such as cement slurry lag behind relatively. This leads to uneven composition of concrete when it reaches its destination, which is called segregation.

[0004] This kind of segregated concrete used in construction will seriously affect the strength and stability of the concrete structure. For example, when pouring concrete columns, the segregated concrete will cause aggregate accumulation at the bottom of the column, excessive cement slurry content at the top, and uneven overall stress performance of the column, which is prone to cracks and even collapse.

[0005] In view of this, this application is hereby filed. Summary of the invention

[0006] The object of the present invention is to provide a conveying device for conveying concrete vertically downward and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the present invention provides a conveying device for conveying concrete vertically downward, comprising at least two conveying pipes; further comprising: a mounting pipe, which is arranged between the two conveying pipes and is used to connect the two conveying pipes; a plurality of baffles are arranged at intervals along the axial direction of the mounting pipe to form a plurality of chambers, and a pipe is arranged between adjacent baffles, which is used to connect two adjacent chambers corresponding to the chambers of the pipe, and the pipe is arranged in a clockwise or counterclockwise spiral bending, and there is an angle between the outlet direction of the pipe and the axial direction of the mounting pipe.

[0008] Furthermore, the pipeline includes multiple first pipelines and second pipelines, and the first pipelines and the second pipelines are alternately arranged in sequence in the chamber of the installation pipe; the first pipeline is arranged in a clockwise spiral bend, and the second pipeline is arranged in a counterclockwise spiral bend; or, the first pipeline is arranged in a counterclockwise spiral bend, and the second pipeline is arranged in a clockwise spiral bend.

[0009] Furthermore, the pipeline includes a plurality of first pipelines and second pipelines, the first pipelines and the second pipelines are arranged in pairs in each chamber, and the first pipelines and the second pipelines are arranged in opposite spiral bending directions.

[0010] Furthermore, the baffle is composed of a plurality of sub-plates which are sequentially sleeved, wherein a fixing rod fixedly connected to the mounting tube is arranged on the outermost baffle, and an adjusting rod fixedly connected to the adjusting ring is arranged on the innermost baffle.

[0011] Furthermore, the first pipe is a circular pipe, and both ends of the second pipe are rectangular, and the pipe wall is two parallel planes extending downward, and an arc-shaped side connecting the two planes.

[0012] Furthermore, the outer wall of the mounting tube is provided with side teeth, a dredging motor is installed on one side of the mounting tube, a driving shaft is connected to the top surface of the dredging motor, and a dredging rod adapted to the side teeth is provided on the side surface of the driving shaft.

[0013] Furthermore, a toggle rod is provided at the top end of the driving shaft, the toggle rod is rotationally connected to the driving shaft, a torsion spring is provided between the toggle rod and the driving shaft, and a protrusion adapted to the toggle rod is provided on the outer side of the adjusting ring.

[0014] Furthermore, a harmonic reducer is arranged between the dredging motor and the driving shaft.

[0015] Furthermore, both sides of the adjustment ring are connected to the delivery pipe and the installation pipe through sealed bearings.

[0016] Furthermore, a method for using a conveying device for conveying concrete vertically downwards is provided.

[0017] During installation, install the delivery pipeline on a suitable wall through the installation parts on the side wall of the delivery pipeline and use the expansion bolts on both sides to ensure that the installation is firm and the position is accurate. Install a pressure pump for conveying concrete at the top or bottom of the delivery pipeline, connect the relevant delivery lines and power lines, and debug to ensure that the pressure pump can work normally.

[0018] Install the installation pipe in the delivery pipe through the flange to ensure tight connection and sealing. Install the baffle in the installation pipe. Note that the round holes and square holes on the two adjacent baffles are in opposite positions. Install the first pipe and the second pipe in sequence according to the design, so that they are accurately connected with the round holes and square holes on the baffles, and the channel is fixedly connected with the side wall of the installation pipe.

[0019] When in use, the pressure pump is started to convey concrete. When the concrete enters the installation pipe, it is divided into a mainstream and a branch flow at the baffle. The mainstream enters the first pipe through the round hole and obtains a clockwise rotation angular force under the action of the pipe wall of the first pipe; the branch flow enters the second pipe through the square hole and obtains a counterclockwise rotation angular force under the action of the pipe wall of the second pipe. The branch flow and the mainstream are counter-mixed between the baffles below, and pass through the actions of multiple baffles, the first pipe and the second pipe in sequence, so as to achieve multiple counter-mixing, thereby ensuring the uniformity of concrete mixing and preventing segregation.

[0020] When the conveying pipe or the installation pipe is found to be blocked, the dredging motor is started, the motor drives the driving shaft to rotate, and the dredging rod on the driving shaft drives the installation pipe to rotate through the side teeth. At this time, the second pipe acts as an auger blade to dredge the pipe due to its special shape; at the same time, the toggle rod on the driving shaft rotates to contact the outer protrusion of the adjusting ring, driving the adjusting ring to rotate, thereby storing the baffle, so that the second pipe can be better dredged. When the baffle is stored and the adjusting ring cannot rotate, the toggle rod deflects and contracts under the action of the torsion spring, passes through the protrusion of the adjusting ring, and continues to ensure that the dredging rod rotates normally to dredge the pipe.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, during the transportation process, the concrete is divided through the circular holes and square holes of the baffle, and the main flow and the tributary flow enter different channels respectively to obtain angular forces in different directions and then are counter-mixed. The sequential arrangement of multiple baffles and channels realizes multiple counter-mixing of concrete during the downward transportation process, greatly ensuring the uniformity of concrete mixing and effectively preventing the segregation of concrete.

[0023] In the present invention, the baffle can be rotated and stored by the adjusting ring. When the height difference of the vertical transportation of concrete is low, the baffle can be closed, which will not hinder the flow of concrete and avoid delaying the construction due to too slow flow rate. When the height difference is large, the baffle is unfolded to play the role of deceleration, buffering and preventing segregation, thereby improving the applicability of the device under different working conditions.

[0024] In the present invention, when the delivery pipe or the installation pipe is blocked, the unblocking motor is started, and the unblocking rod on the driving shaft can drive the installation pipe to rotate, and the special shape of the second pipe is used as the auger blade to unblock the pipe. At the same time, the toggle rod can drive the adjustment ring to rotate the storage baffle, so that the second pipe can better play the role of unblocking, and the torsion spring design of the toggle rod can automatically deflect and shrink after the baffle is stored, which does not affect the continuous operation of the unblocking rod, effectively solving the problem of pipe blockage and reducing downtime and maintenance costs caused by blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a conveying device for conveying concrete vertically downward;

[0026] Figure 2 A schematic diagram of an installation pipe of a conveying device for conveying concrete vertically downward;

[0027] Figure 3 A schematic diagram of a driving source of a conveying device for conveying concrete vertically downward;

[0028] Figure 4 A schematic diagram of the internal structure of an installation pipe of a conveying device for conveying concrete vertically downward;

[0029] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0030] Figure 6 The present invention is a cross-sectional view of an installation pipe of a conveying device for conveying concrete vertically downward.

[0031] In the figure: 1. conveying pipeline; 101. mounting part; 2. mounting pipe; 201. side teeth; 3. baffle; 4. first pipeline; 5. second pipeline; 6. adjusting ring; 601. fixing rod; 602. adjusting rod; 7. dredging motor; 701. driving shaft; 702. dredging rod; 703. toggle rod; 704. harmonic reducer; 705. mounting frame. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-6 , the present invention provides a technical solution:

[0034] A conveying device for conveying concrete vertically downward comprises at least two conveying pipes 1; the side walls of the conveying pipes 1 are provided with mounting members 101, which are mounted on the wall by expansion bolts on both sides; a pressure pump for conveying concrete is provided at the top or bottom of the conveying pipes 1.

[0035] It also includes a mounting tube 2, which is arranged between the two conveying pipes 1 and is used to connect the two conveying pipes 1; a plurality of baffles 3 are arranged at intervals along the axial direction of the mounting tube 2 to form a plurality of chambers, and a pipe is arranged between adjacent baffles 3 to connect two adjacent chambers corresponding to the chamber of the pipe. The pipe is arranged in a clockwise or counterclockwise spiral bend, and there is an angle between the outlet direction of the pipe and the axial direction of the mounting tube 2. The baffle 3 is provided with a circular hole and a square hole that coincide with the end of the pipe.

[0036] The pipeline includes multiple first pipelines 4 and second pipelines 5, and the first pipelines 4 and second pipelines 5 are alternately arranged in sequence in the chamber of the mounting pipe 2; the first pipeline 4 is arranged in a clockwise spiral bend, and the second pipeline 5 is arranged in a counterclockwise spiral bend; or, the first pipeline 4 is arranged in a counterclockwise spiral bend, and the second pipeline 5 is arranged in a clockwise spiral bend.

[0037] By adopting the above design, when the concrete reaches the baffle 3, it can only pass through the round hole and the square hole in the baffle 3. The mainstream enters the baffle 3 through the round hole, and part of the tributary enters the second pipe 5 through the square hole. Since the pipe wall of the second pipe 5 is bent and extended in the counterclockwise direction, part of the tributary concrete will flow along the pipe wall when passing through the second pipe 5. Under the action of inertia, the second pipe 5 will add a counterclockwise angular force to the part of the tributary concrete during the flow, so that when the part of the tributary concrete flows between the two baffles 3 below, it will collide with the mainstream concrete and be re-mixed.

[0038] The mainstream concrete flowing in through the circular hole will continue to flow downward to between the two baffles 3. At this time, since the square hole is blocked, the mainstream concrete flows into the first pipe 4 through the circular hole. Since the pipe wall of the first pipe 4 is bent and extended in the clockwise direction, when the mainstream concrete passes through the first pipe 4, the first pipe 4 will provide a clockwise rotating angular force for the mainstream concrete, so that when the mainstream concrete enters between the two baffles 3 below, it will collide with the tributary concrete and be re-mixed.

[0039] The baffle 3, the first pipe 4 and the second pipe 5 are arranged in sequence, so that multiple counter-mixing and mixing are performed during the downward transportation of the concrete, so as to ensure the uniformity of the concrete mixing and prevent the segregation of the concrete.

[0040] Embodiment 2: Based on Embodiment 1, please refer to Figures 1-6 of the delivery pipeline, the present invention provides another technical solution:

[0041] The pipeline includes a plurality of first pipelines 4 and second pipelines 5. The first pipelines 4 and second pipelines 5 are arranged in pairs in each chamber, and the first pipelines 4 and second pipelines 5 are arranged in opposite spiral bending directions.

[0042] By adopting the above design, the concrete is divided into two streams and enters the first pipe 4 and the second pipe 5. The first pipe 4 provides a clockwise angular force for the concrete, and the second pipe 5 provides a counterclockwise angular force for the concrete. This makes the two streams of concrete collide at the interval between the baffles 3 after passing through the first pipe 4 and the second pipe 5, thereby further improving the uniformity of the concrete and preventing segregation.

[0043] Embodiment 3: Based on Embodiments 1 and 2, please refer to Figures 1-6 of the delivery pipeline, the present invention provides another technical solution:

[0044] The baffle plate 3 is composed of a plurality of sub-plates which are sequentially sleeved, wherein a fixing rod 601 fixedly connected to the mounting tube 2 is arranged on the outermost baffle plate 3 , and an adjusting rod 602 fixedly connected to the adjusting ring 6 is arranged on the innermost baffle plate 3 .

[0045] By adopting the above design, the baffle 3 can be stored by rotation, and because one end of the baffle 3 is fixedly connected to the mounting tube 2 so that it cannot rotate, the other end of the baffle 3 is fixedly connected to the adjusting ring 6 and can rotate with the adjusting ring 6. This allows the device to selectively unfold or close the baffle 3 according to the height difference during vertical transportation of concrete when in use, so that when the height difference is low, the flow of concrete will not be hindered, the flow rate will be too slow, and the use of construction personnel will not be delayed. When the height difference is large, the baffle 3 can also be unfolded to play a role in deceleration, buffering and preventing segregation.

[0046] Furthermore, both sides of the adjusting ring 6 are connected to the conveying pipe 1 and the mounting pipe 2 through sealed bearings.

[0047] By using sealed bearings to connect the two ends of the adjusting ring 6 with the conveying pipe 1 and the installation pipe 2, during transportation, concrete will not leak from the connection between the conveying pipe 1 and the installation pipe 2 and the adjusting ring 6, so that the sealing of the connection between the two ends of the adjusting ring 6 is guaranteed.

[0048] Furthermore, the first pipe 4 is a circular pipe, and both ends of the second pipe 5 are rectangular, and the pipe wall is two parallel planes extending downward, and an arc-shaped side connecting the two planes.

[0049] By adopting the above design, when the conveying pipe 1 or the installation pipe 2 is blocked, the baffle 3 can be stored by rotating the adjusting ring 6, and then the installation pipe 2 is rotated to drive the second pipe 5 to rotate. When the second pipe 5 rotates, since its pipe wall is two parallel planes extending downward, which are similar to the blades of the auger, the multiple second pipes 5 can act as auger blades when the second pipe 5 rotates, so as to dredge the pipe when the pipe is blocked.

[0050] Furthermore, the outer wall of the mounting tube 2 is provided with side teeth 201, a dredging motor 7 is installed on one side of the mounting tube 2, a mounting frame 705 is connected to the lower part of the dredging motor 7 by bolts, the mounting frame 705 is in a U-shape, the middle part of the mounting frame 705 is hollowed out, extension plates are provided on both sides of the mounting frame 705, and the mounting frame 705 is connected to the wall through the extension plates and expansion screws.

[0051] The top surface of the dredging motor 7 is connected to a driving shaft 701, a dredging rod 702 adapted to the side teeth 201 is provided on the side of the driving shaft 701, a toggle rod 703 is provided on the top of the driving shaft 701, the toggle rod 703 is rotationally connected to the driving shaft 701, a torsion spring is provided between the toggle rod 703 and the driving shaft 701, a protrusion adapted to the toggle rod 703 is provided on the outer side of the adjusting ring 6, a harmonic reducer 704 is provided between the dredging motor 7 and the driving shaft 701, the harmonic reducer 704 can slow down the rotation speed of the dredging motor 7, so that the dredging rod 702 and the toggle rod 703 in the present device will not be damaged due to violent collision with the side teeth 201 and the outer protrusion of the adjusting ring 6 due to the excessive rotation speed of the dredging motor 7.

[0052] By adopting the above design, when the pipeline is blocked, the dredging motor 7 can be started to drive the driving shaft 701 to rotate, thereby driving the dredging rod 702 and the toggle rod 703 to rotate.

[0053] When the dredging rod 702 rotates, it will drive the mounting pipe 2 to rotate through the side teeth 201, and the second pipe 5 will act as a blade to dredge the pipe.

[0054] When the toggle rod 703 rotates, it will drive the outer protrusion of the adjusting ring 6 to rotate, and then drive the adjusting ring 6 to rotate, so as to accommodate the baffle 3, so that the second pipe 5 can better dredge the pipe. Moreover, after the baffle 3 is accommodated and the adjusting ring 6 cannot rotate, the torsion spring arranged between the toggle rod 703 and the driving shaft 701 can make the toggle rod 703 deflect and contract, and pass through the outer protrusion of the adjusting ring 6 without hindering the rotation of the dredging rod 702.

[0055] Working principle:

[0056] During installation, the delivery pipeline 1 is installed on a suitable wall through the mounting parts 101 on the side wall of the delivery pipeline 1 using the expansion bolts on both sides to ensure that it is firmly installed and accurately positioned. A pressure pump for conveying concrete is installed at the top or bottom of the delivery pipeline 1, and the relevant delivery lines and power lines are connected, and debugging is performed to ensure that the pressure pump can work normally.

[0057] Install the installation pipe 2 in the conveying pipe 1 through the flange to ensure a tight connection and sealing. Install the baffle 3 in the installation pipe 2. Note that the round holes and square holes on the two adjacent baffles 3 are in opposite positions. Install the first pipe 4 and the second pipe 5 in sequence according to the design, so that they are accurately docked with the round holes and square holes on the baffle 3, and the channel is fixedly connected to the side wall of the installation pipe 2.

[0058] When in use, start the pressure pump to start conveying concrete. When the concrete enters the installation pipe 2, it is divided into a mainstream and a branch flow at the baffle 3. The mainstream enters the first pipe 4 through the circular hole, and obtains a clockwise rotation angular force under the action of the wall of the first pipe 4; the branch flow enters the second pipe 5 through the square hole, and obtains a counterclockwise rotation angular force under the action of the wall of the second pipe 5.

[0059] The tributary and the main stream are mixed and offset between the baffles 3 below, and sequentially pass through the multiple baffles 3, the first pipe 4 and the second pipe 5 to achieve multiple offset mixing, thereby ensuring the uniformity of concrete mixing and preventing segregation.

[0060] When it is found that the conveying pipe 1 or the installation pipe 2 is blocked, the dredging motor 7 is started, and the motor drives the driving shaft 701 to rotate. The dredging rod 702 on the driving shaft 701 drives the installation pipe 2 to rotate through the side teeth 201. At this time, the second pipe 5 acts as an auger blade to dredge the pipe due to its special shape; at the same time, the toggle rod 703 on the driving shaft 701 rotates to contact the outer protrusion of the adjusting ring 6, driving the adjusting ring 6 to rotate, thereby accommodating the baffle 3, so that the second pipe 5 can be better dredged.

[0061] When the baffle 3 is completely retracted and the adjusting ring 6 cannot rotate, the toggle rod 703 deflects and contracts under the action of the torsion spring, passes through the protrusion of the adjusting ring 6, and continues to ensure that the dredging rod 702 rotates normally to dredge the pipeline.

Claims

1. A conveying device for conveying concrete vertically downward, characterized in that: It comprises at least two conveying pipelines (1); Also includes, A mounting pipe (2) is arranged between the two conveying pipelines (1) and is used to connect the two conveying pipelines (1); A plurality of baffles (3) are arranged at intervals along the axial direction of the mounting tube (2) to form a plurality of chambers; a pipe is provided between adjacent baffles (3) for connecting two adjacent chambers corresponding to the chamber of the pipe; the pipe is arranged in a clockwise or counterclockwise spiral bend, and an angle exists between the direction of the outlet of the pipe and the axial direction of the mounting tube (2).

2. A conveying device for conveying concrete vertically downward as claimed in claim 1, characterized in that: The pipeline comprises a plurality of first pipelines (4) and second pipelines (5), wherein the first pipelines (4) and the second pipelines (5) are alternately arranged in sequence in the chamber of the installation pipe (2); The first pipe (4) is arranged in a clockwise spiral bend, and the second pipe (5) is arranged in a counterclockwise spiral bend; or, The first pipe (4) is arranged in a counterclockwise spiral bend, and the second pipe (5) is arranged in a clockwise spiral bend.

3. A conveying device for conveying concrete vertically downward as claimed in claim 1, characterized in that: The pipeline comprises a plurality of first pipelines (4) and second pipelines (5), wherein the first pipelines (4) and the second pipelines (5) are arranged in pairs in each chamber, and the first pipelines (4) and the second pipelines (5) are arranged in opposite spiral bending directions.

4. A conveying device for conveying concrete vertically downward according to any one of claims 1 to 3, characterized in that: The baffle plate (3) is composed of a plurality of sub-plates which are sequentially sleeved, wherein a fixing rod (601) fixedly connected to the mounting tube (2) is arranged on the outermost baffle plate (3), and an adjusting rod (602) fixedly connected to the adjusting ring (6) is arranged on the innermost baffle plate (3).

5. A conveying device for conveying concrete vertically downward as claimed in any one of claims 2 or 3, characterized in that: The first pipe (4) is a circular pipe, and the two ends of the second pipe (5) are rectangular, and the pipe wall is two parallel planes extending downward, and an arc-shaped side connecting the two planes.

6. A conveying device for conveying concrete vertically downward as claimed in claim 5, characterized in that: The outer wall of the mounting tube (2) is provided with side teeth (201), a dredging motor (7) is installed on one side of the mounting tube (2), the top surface of the dredging motor (7) is connected to a driving shaft (701), and the side surface of the driving shaft (701) is provided with a dredging rod (702) adapted to the side teeth (201).

7. A conveying device for conveying concrete vertically downward as claimed in claim 6, characterized in that: A toggle rod (703) is arranged at the top end of the driving shaft (701), the toggle rod (703) is rotationally connected to the driving shaft (701), a torsion spring is arranged between the toggle rod (703) and the driving shaft (701), and a protrusion adapted to the toggle rod (703) is arranged on the outer side of the adjusting ring (6).

8. A conveying device for conveying concrete vertically downward as claimed in claim 7, characterized in that: A harmonic reducer (704) is provided between the dredging motor (7) and the driving shaft (701).

9. A conveying device for conveying concrete vertically downward as claimed in claim 8, characterized in that: Both sides of the adjustment ring (6) are connected to the delivery pipeline (1) and the installation pipe (2) via sealing bearings.

10. A method for using a conveying device for conveying concrete vertically downward according to claims 1 to 9, characterized in that: During installation, the delivery pipeline (1) is installed on a suitable wall surface by using the installation piece (101) on the side wall of the delivery pipeline (1) and the expansion bolts on both sides to ensure that the installation is firm and the position is accurate. A pressure pump for conveying concrete is installed at the top or bottom of the delivery pipeline (1), and the relevant delivery lines and power lines are connected. The pressure pump is debugged to ensure that it can work normally. Install the installation pipe (2) in the delivery pipe (1) through the flange to ensure a tight connection and tight sealing. Install the baffle (3) in the installation pipe (2). Note that the circular holes (301) and the square holes (302) on the two adjacent baffles (3) are in opposite positions. Install the first pipe (4) and the second pipe (5) in sequence according to the design so that they are accurately connected with the circular holes (301) and the square holes (302) on the baffle (3). The channel is fixedly connected to the side wall of the installation pipe (2). When in use, the pressure pump is started to convey concrete. When the concrete enters the installation pipe (2), it is divided into a main flow and a branch flow at the baffle (3). The main flow enters the first pipe (4) through the circular hole (301) and obtains a clockwise rotation angular force under the action of the pipe wall of the first pipe (4); the branch flow enters the second pipe (5) through the square hole (302) and obtains a counterclockwise rotation angular force under the action of the pipe wall of the second pipe (5). The branch flow and the main flow are counter-mixed between the baffles (3) below and sequentially pass through the actions of multiple baffles (3), the first pipe (4) and the second pipe (5), thereby achieving multiple counter-mixing, thereby ensuring the uniformity of concrete mixing and preventing segregation. When the conveying pipe (1) or the installation pipe (2) is found to be blocked, the dredging motor (7) is started, the motor drives the driving shaft (701) to rotate, and the dredging rod (702) on the driving shaft (701) drives the installation pipe (2) to rotate through the side teeth (201). At this time, the second pipe (5) acts as an auger blade to dredge the pipe due to its special shape; at the same time, the toggle rod (703) on the driving shaft (701) rotates to contact the outer protrusion of the adjustment ring (6), driving the adjustment ring (6) to rotate, thereby storing the baffle (3) so that the second pipe (5) can be better dredged. When the baffle (3) is stored and the adjustment ring (6) cannot rotate, the toggle rod (703) deflects and contracts under the action of the torsion spring, passes through the protrusion of the adjustment ring (6), and continues to ensure that the dredging rod (702) rotates normally to dredge the pipe.

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