Pipeline dredging and unblocking device and unblocking method thereof

Abstract

The application discloses a pipeline dredging and dredging device and belongs to the technical field of pipeline dredging. The device comprises a transmission assembly, a plurality of output ends of the transmission assembly are each provided with a connecting assembly, a driving assembly is installed on the outer wall of the transmission assembly, a dredging assembly is installed on the outer wall of the transmission assembly, the driving assembly is used for driving the output end of the transmission assembly to extend and retract, the transmission assembly is used for driving the connecting assembly to extrude the inner wall of the pipeline, and the dredging assembly is used for dredging the inner wall of the pipeline. The motor drives the gear ring to reversely rotate, a plurality of outer ends of the fixing frames are separated from the abutment against the inner wall of the pipeline, the output end is retracted through the electric push rod, the transmission assembly and the driving assembly are reversely pulled to move towards the side close to the dredging assembly, the roller on the connecting assembly rolls along the inner wall of the pipeline, the device has high flexibility, can freely move in the pipeline, effectively cleans the silt attached to the inner wall of the pipeline, and has high cleaning effect and high speed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline dredging, more particularly to a pipeline dredging and dredging device and method. BACKGROUND

[0002] Underground sewage and drainage pipelines are widespread in cities, and a large amount of sewage and dirt enters the underground pipelines every day and is discharged outside the city or into a dedicated sewage and dirt treatment site through the underground pipelines. During the sewage discharge process, a frame of accumulated sludge may appear inside the pipeline. If the pipeline is not dredged in time, the accumulated sludge may block the pipeline, causing sewage to overflow. The reason why the pipeline is blocked is that the sewage contains a lot of oil stains that can cause dirt to accumulate. These oil stains adhere to the inner wall of the pipeline for a long time. When the dirt in the pipeline flows, it may stick to the wall, reducing the inner diameter of the pipeline and the range of sewage flow, resulting in more and more dirt accumulation and poor sewage discharge. Therefore, a dredging device is needed to clean the accumulated sludge in the pipeline.

[0003] Most existing pipeline dredging devices are external devices that cannot enter the pipeline to clean the accumulated sludge. They have poor flexibility, poor cleaning effect, and slow speed. In view of this, we propose a pipeline dredging and dredging device and method. SUMMARY

[0004] The present application aims to provide a pipeline dredging and dredging device and method to solve the problems raised in the background.

[0005] A pipeline dredging and dredging device includes a transmission assembly, a plurality of output ends of the transmission assembly are each provided with a connecting assembly, a driving assembly is installed on the outer wall of the transmission assembly, and a dredging assembly is installed on the outer wall of the transmission assembly. The driving assembly is used to drive the output end of the transmission assembly to slide, the transmission assembly is used to drive the connecting assembly to extrude the inner wall of the pipeline, and the dredging assembly is used to dredge the inner wall of the pipeline.

[0006] In a preferred embodiment of the pipeline dredging and unblocking device of the present invention, the transmission assembly includes a fixed ring, a fixed sleeve coaxially disposed within the fixed ring, a plurality of toothed plates slidably connected radially to the outer circumference of the fixed ring in an annular symmetrical structure, the outer ends of the plurality of toothed plates penetrating the fixed ring and extending to its outer side, a limiting plate vertically fixed to the sidewalls of the plurality of toothed plates, the outer ends of the plurality of limiting plates respectively penetrating the fixed ring and slidably connected to it radially, the inner ends of the plurality of toothed plates penetrating the fixed sleeve and extending into its interior, the inner ends of the plurality of limiting plates penetrating the fixed sleeve and extending into its interior, a plurality of mounting plates vertically fixed to the outer wall of the fixed ring in an annular symmetrical structure, a rotating shaft rotatably connected to the plurality of mounting plates, a gear coaxially fixedly disposed on the plurality of rotating shafts, the plurality of gears respectively meshing with adjacent toothed plates, and a gear ring rotatably connected to the inner wall of the fixed ring, the gear ring respectively meshing with the plurality of gears.

[0007] In a preferred embodiment of the pipe dredging and unblocking device of the present invention, the connecting assembly includes a fixing frame, an installation groove on the outer side of the fixing frame, sliding grooves on both sides of the inner wall of the installation groove, sliding rods fixedly mounted on the inner walls of the two sliding grooves, springs sleeved on the outer circumference of the two sliding rods, an installation frame inside the installation groove, rollers rotatably connected to the inner wall of the installation frame, a connecting shaft rotatably connected to the inner wall of the installation frame, the two ends of the connecting shaft extending to the inner wall of the sliding groove, and the two sliding rods passing through the connecting shaft and slidably connected to it.

[0008] In a preferred embodiment of the pipe dredging and unblocking device of the present invention, one end of the spring is fixedly connected to the inner wall of the chute, and the other end of the spring is fixedly connected to the connecting shaft.

[0009] As a preferred embodiment of the pipe dredging and unblocking device of the present invention, wherein: both ends of the outer side of the plurality of fixed frames are fixed with abutment blocks, and the abutment blocks are rubber blocks.

[0010] As a preferred embodiment of the pipeline dredging and unblocking device of the present invention, the inner side of the plurality of fixed brackets is respectively connected and fixed to the toothed plate, and the inner side of the plurality of fixed brackets is respectively connected and fixed to the limiting plate.

[0011] As a preferred embodiment of the pipeline dredging and unblocking device of the present invention, the driving component includes a fixing plate, the outer circumferential wall of the fixing plate is provided with a plurality of fixing rods in a ring-shaped symmetrical structure, the side wall of the fixing plate is provided with a motor, the output end of the motor is provided with a connecting sleeve, and the outer circumferential wall of the connecting sleeve is provided with a plurality of connecting arms in a ring-shaped symmetrical structure.

[0012] As a preferred scheme of the pipeline dredging device, the outer ends of the plurality of fixed rods are respectively connected and fixed with the inner wall of the fixed sleeve, and the outer ends of the plurality of connecting arms are respectively connected and fixed with the gear ring.

[0013] As a preferred scheme of the pipeline dredging device, the dredging assembly comprises a connecting plate and an electric push rod, the outer wall of the connecting plate is annularly and symmetrically provided with a plurality of connecting rods, the connecting plate is externally provided with a mounting sleeve, the outer ends of the plurality of connecting rods are respectively connected and fixed with the mounting sleeve, the outer wall of the mounting sleeve is fixedly provided with a scraper, the output end of the electric push rod is connected and fixed with the connecting plate, and the end of the electric push rod is connected and fixed with the fixed plate.

[0014] A dredging method of the pipeline dredging device comprises the following steps.

[0015] S1, the dredging device is placed in the inner wall of one end of the pipeline, the plurality of rollers on the connecting assembly are in rolling contact with the inner wall of the pipeline, and the outer wall of the scraper is in frictional contact with the inner wall of the pipeline.

[0016] S2, the motor drives the connecting sleeve to rotate, the connecting sleeve drives the plurality of connecting arms to rotate, the plurality of connecting arms drive the gear ring to rotate, the gear ring drives the plurality of gears on the mounting plate to synchronously rotate, the plurality of gears drive the plurality of toothed plates to respectively slide outward along the inner walls of the fixed sleeve and the fixed ring when rotating, and the plurality of toothed plates drive the plurality of limiting plates to move when moving.

[0017] S3, the plurality of toothed plates and limiting plates can push the fixed frame to move outward when moving, at this time, the rollers are extruded, the mounting frame is pushed to slide into the fixed frame, the mounting frame drives the connecting shafts at both ends to slide along the slide rods in the sliding grooves when moving, and the springs are stretched, until the abutting blocks on the outer ends of the fixed frames can abut against the inner wall of the pipeline, so that the transmission assembly is fixed.

[0018] S4, the output end of the electric push rod extends outward, the connecting plate is pushed to move to the other end of the pipeline, the connecting plate drives the scraper to move along the inner wall of the pipeline when moving through the connecting rods, so that the sludge adhered to the inner wall of the pipeline can be pushed to be cleaned.

[0019] S5, when the scraper stops moving, the motor drives the gear ring to reversely rotate, the gear ring drives the plurality of gears to reversely rotate, the plurality of toothed plates and limiting plates drive the fixed frames to shrink respectively, at this time, the outer ends of the plurality of fixed frames are separated from the abutment against the inner wall of the pipeline, at this time, the rollers on the connecting assembly are in contact with the inner wall of the pipeline, the output end is shrunk by the electric push rod, so that the transmission assembly and the driving assembly can be reversely pulled to move to the side close to the dredging assembly, and the rollers on the connecting assembly roll along the inner wall of the pipeline.

[0020] Compared with the prior art, the pipeline dredging device has the following beneficial effects:

[0021] 1, by placing the dredging device in the inner wall of one end of the pipeline, the multiple rollers on the connecting assembly are in rolling contact with the inner wall of the pipeline, the outer wall of the scraper is in frictional contact with the inner wall of the pipeline, the motor drives the gear ring to rotate, the gear ring drives multiple gears to rotate, multiple gears drive multiple tooth plates and limit plates to move, until the abutting block on the outer end of the fixing frame can abut against the inner wall of the pipeline, so as to fix the transmission assembly, the output end of the electric push rod extends outward to push the scraper to move along the inner wall of the pipeline, so as to push the sludge attached to the inner wall of the pipeline to clean it, when the scraper stops moving, the motor drives the gear ring to rotate in the opposite direction, at this time, the outer end of the multiple fixing frames is disengaged from the abutment of the inner wall of the pipeline, and the output end is retracted by the electric push rod, so as to reversely pull the transmission assembly and the driving assembly to move towards the side close to the dredging assembly, so that the rollers on the connecting assembly roll along the inner wall of the pipeline, the device has high flexibility and can move freely inside the pipeline, effectively cleaning the sludge attached to the inner wall of the pipeline, with high cleaning effect and fast speed.

[0022] 2, through the cooperation of the motor and the electric push rod, the device can move flexibly inside the pipeline, improving the degree of automation and reducing manual operation steps.

[0023] 3, the motor drives the connecting sleeve to rotate, the connecting sleeve drives multiple connecting arms to rotate, the multiple connecting arms drive the gear ring to rotate, the gear ring drives the gears on the multiple mounting plates to rotate synchronously, so that the multiple tooth plates and limit plates can push the fixing frame to move outward, so that the abutting block on the outer end of the fixing frame can abut against the inner wall of the pipeline, this design can drive multiple gears to rotate synchronously through the gear ring, so that multiple abutting blocks can extrude the inner wall of the pipeline, improving the stability of the transmission assembly and the driving assembly when fixed.

[0024] 4, by providing rollers on the connecting assembly, when the output end of the electric push rod is retracted to reversely pull the transmission assembly and the driving assembly to move towards the side close to the dredging assembly, the rollers on the connecting assembly roll along the inner wall of the pipeline, which can effectively support the transmission assembly and the driving assembly, and also reduce the friction between the structure and the inner wall of the pipeline, facilitating the movement of the transmission assembly and the driving assembly, so that the electric push rod can move the transmission assembly and the driving assembly towards the side close to the dredging assembly, so that the dredging device can move flexibly inside the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall structure diagram of the present application;

[0026] Figure 2 It is the overall structure diagram of the transmission assembly of the present application;

[0027] Figure 3 It is the overall structure diagram of the connecting assembly of the present application;

[0028] Figure 4 This is a schematic diagram of the internal structure of the connecting component of the present invention;

[0029] Figure 5 This is a schematic diagram of the overall structure of the driving component of the present invention;

[0030] Figure 6 This is a schematic diagram of the overall structure of the dredging component of the present invention.

[0031] The following are the labeling instructions in the diagram: 1. Transmission assembly; 101. Fixing ring; 102. Fixing sleeve; 103. Gear plate; 104. Limiting plate; 105. Gear ring; 106. Mounting plate; 107. Rotating shaft; 108. Gear; 2. Connecting assembly; 201. Fixing frame; 202. Mounting groove; 203. Slide groove; 204. Slide rod; 205. Spring; 206. Mounting bracket; 207. Connecting shaft; 208. Roller; 209. Abutment block; 3. Drive assembly; 301. Motor; 302. Fixing plate; 303. Fixing rod; 304. Connecting sleeve; 305. Connecting arm; 4. Dredging assembly; 401. Electric push rod; 402. Connecting plate; 403. Connecting rod; 404. Mounting sleeve; 405. Scraper. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Example 1:

[0034] like Figure 1 As shown, a pipe dredging and unblocking device includes a transmission component 1, multiple output ends of the transmission component 1 are equipped with connecting components 2, a drive component 3 is installed on the outer wall of the transmission component 1, and a dredging component 4 is installed on the outer wall of the transmission component 1. The drive component 3 is used to drive the output ends of the transmission component 1 to extend and slide, the transmission component 1 is used to drive the connecting components 2 to squeeze the inner wall of the pipe, and the dredging component 4 is used to dredge the inner wall of the pipe.

[0035] Example 2:

[0036] This embodiment is based on the previous embodiment, but differs from the previous embodiment in that it provides a transmission component 1.

[0037] like Figure 2As shown, the transmission assembly 1 comprises a fixed ring 101, a fixed sleeve 102 is coaxially arranged in the fixed ring 101, a plurality of tooth plates 103 are slidably connected to the outer wall of the fixed ring 101 in a radial direction, the outer ends of the plurality of tooth plates 103 extend to the outside of the fixed ring 101, the side walls of the plurality of tooth plates 103 are vertically fixed with limit plates 104, the outer ends of the plurality of limit plates 104 extend to the outside of the fixed ring 101 and are slidably connected to the fixed ring 101 in a radial direction, the inner ends of the plurality of tooth plates 103 extend to the inside of the fixed sleeve 102, the inner ends of the plurality of limit plates 104 extend to the inside of the fixed sleeve 102, a plurality of mounting plates 106 are vertically fixed to the outer wall of the fixed ring 101 in a ring symmetric structure, a plurality of rotating shafts 107 are rotatably connected to the plurality of mounting plates 106, a plurality of gears 108 are coaxially arranged on the plurality of rotating shafts 107, the plurality of gears 108 are respectively engaged with adjacent tooth plates 103, and a gear ring 105 is rotatably connected to the inner wall of the fixed ring 101. The gear ring 105 is engaged with the plurality of gears 108.

[0038] Example three:

[0039] The difference between this embodiment and the previous embodiment is that a connecting assembly 2 is provided.

[0040] As shown in Figure 3 and Figure 4 , the connecting assembly 2 comprises a fixed frame 201, the outer side of the fixed frame 201 is provided with a mounting slot 202, the inner wall of the mounting slot 202 is provided with a sliding slot 203 on both sides, two sliding rods 204 are fixedly arranged on the inner wall of the two sliding slots 203, the circumferential outer wall of the two sliding rods 204 is sleeved with a spring 205, the inside of the mounting slot 202 is provided with a mounting frame 206, the inner wall of the mounting frame 206 is rotatably connected with a roller 208, the inner wall of the mounting frame 206 is rotatably connected with a connecting shaft 207, the two ends of the connecting shaft 207 extend to the inner wall of the sliding slot 203, the two sliding rods 204 extend through the connecting shaft 207 and are slidably connected with the connecting shaft 207, one end of the spring 205 is fixedly connected with the inner wall of the sliding slot 203, the other end of the spring 205 is fixedly connected with the connecting shaft 207. By arranging the roller 208 on the connecting assembly 2, when the output end of the electric push rod 401 is retracted and reversely pulls the transmission assembly 1 and the driving assembly 3 to move towards the side close to the dredging assembly 4, the roller 208 on the connecting assembly 2 rolls along the inner wall of the pipeline, which can effectively support the transmission assembly 1 and the driving assembly 3, and also can reduce the friction between the structure and the inner wall of the pipeline, facilitating the movement of the transmission assembly 1 and the driving assembly 3, so that the electric push rod 401 can move the transmission assembly 1 and the driving assembly 3 to the side close to the dredging assembly 4, thereby enabling the dredging device to move flexibly inside the pipeline.

[0041] The two outer ends of the plurality of fixing frames 201 are fixedly provided with abutting blocks 209, which are rubber blocks and can effectively increase the friction between the abutting blocks 209 and the inner wall of the pipeline.

[0042] The inner sides of the plurality of fixing frames 201 are respectively connected and fixed with the toothed plates 103, and the inner sides of the plurality of fixing frames 201 are respectively connected and fixed with the limiting plates 104.

[0043] Embodiment Four:

[0044] This embodiment is based on the previous embodiment, and the difference from the previous embodiment is to provide a driving assembly 3.

[0045] As shown in Figure 5 , the driving assembly 3 comprises a fixed plate 302, the circumferential outer wall of the fixed plate 302 is fixedly provided with a plurality of fixed rods 303 in a ring-shaped symmetrical structure, the side wall of the fixed plate 302 is fixedly provided with a motor 301, the output end of the motor 301 is fixedly provided with a connecting sleeve 304, the circumferential outer wall of the connecting sleeve 304 is fixedly provided with a plurality of connecting arms 305 in a ring-shaped symmetrical structure, the outer ends of the plurality of fixed rods 303 are respectively connected and fixed with the inner wall of the fixed sleeve 102, and the outer ends of the plurality of connecting arms 305 are respectively connected and fixed with the gear ring 105.

[0046] The motor 301 drives the connecting sleeve 304 to rotate, the connecting sleeve 304 drives the plurality of connecting arms 305 to rotate, the plurality of connecting arms 305 drive the gear ring 105 to rotate, the gear ring 105 drives the plurality of gears 108 on the mounting plate 106 to rotate synchronously, so that the plurality of toothed plates 103 and the limiting plates 104 can drive the fixing frames 201 to move outward, so that the abutting blocks 209 on the outer ends of the fixing frames 201 can abut against the inner wall of the pipeline, and this design can drive the plurality of gears 108 to rotate synchronously through the gear ring 105, thereby extruding the inner wall of the pipeline through the plurality of abutting blocks 209, and the stability of the transmission assembly 1 and the driving assembly 3 during fixing can be improved.

[0047] Embodiment Five:

[0048] This embodiment is based on the previous embodiment, and the difference from the previous embodiment is to provide a dredging assembly 4.

[0049] As shown in Figure 6 , the dredging assembly 4 comprises a connecting plate 402 and an electric push rod 401, the circumferential outer wall of the connecting plate 402 is fixedly provided with a plurality of connecting rods 403 in a ring-shaped symmetrical structure, the connecting plate 402 is externally sleeved with a mounting sleeve 404, the outer ends of the plurality of connecting rods 403 are respectively connected and fixed with the mounting sleeve 404, the circumferential outer wall of the mounting sleeve 404 is fixedly provided with a scraper 405, the output end of the electric push rod 401 is connected and fixed with the connecting plate 402, and the end portion of the electric push rod 401 is connected and fixed with the fixed plate 302.

[0050] The fixed ring 101 is a hollow annular structure, and a ring step groove is formed in the inner wall of the fixed ring 101. The fixed sleeve 102 is a cylindrical structure, and a ring boss is arranged on the outer wall of the fixed sleeve 102. The fixed sleeve 102 is embedded in the ring step groove of the fixed ring 101 through the ring boss, so that the fixed ring 101 and the fixed sleeve 102 are coaxially fixedly connected and do not slide relative to each other, and the center lines of the fixed ring 101 and the fixed sleeve 102 coincide with each other, and the fixed ring 101 and the fixed sleeve 102 jointly form a fixed base body of the transmission assembly.

[0051] The outer circumferential wall of the fixed ring 101 is uniformly provided with 3-4 rectangular sliding holes in the radial direction, and the outer circumferential wall of the fixed sleeve 102 is also provided with rectangular sliding holes of the same specification at the corresponding positions. The tooth plate 103 is a rectangular plate structure, and strip-shaped convex edges are arranged on both sides of the tooth plate 103. The cross-sectional dimension of the tooth plate 103 is matched with the rectangular sliding hole. The tooth plate 103 penetrates the corresponding sliding holes of the fixed ring 101 and the fixed sleeve 102, and is slidably connected with the inner wall of the sliding hole through the strip-shaped convex edges. The tooth plate 103 can slide radially outward or inward, that is, the outward sliding direction is away from the center line of the fixed ring 101 in the radial direction, and the inward sliding direction is close to the center line in the radial direction.

[0052] The limiting plate 104 is an L-shaped plate, one end of the limiting plate 104 is fixed perpendicularly to the side wall of the tooth plate 103, and the other end of the limiting plate 104 penetrates the limiting hole formed in the fixed ring 101 and the fixed sleeve 102. The limiting plate 104 limits the sliding stroke of the tooth plate 103, avoids the tooth plate from being separated from the fixed ring 101 or the fixed sleeve 102 due to excessive sliding, and assists the tooth plate to maintain the radial sliding posture and prevents the tooth plate from deviating.

[0053] The motor 301 of the driving assembly 3 drives the connecting sleeve 304 to rotate, and the connecting sleeve drives the gear ring 105 to rotate around the center line of the fixed ring 101 through the connecting arm 305. The inner teeth of the gear ring 105 are engaged with the plurality of gear wheels 108, so that the gear wheels 108 are driven to rotate synchronously around the rotating shaft 107 on the mounting plate 106. The gear wheels 108 are engaged with the tooth surfaces of the tooth plate 103, so that the circumferential motion of the gear wheels 108 is converted into the radial linear motion of the tooth plate 103. When the gear wheels rotate clockwise, the tooth surfaces push the tooth plate to slide radially outward. When the gear wheels rotate counterclockwise, the tooth surfaces pull the tooth plate to slide radially inward. During the process, the limiting plate 104 slides along the limiting hole synchronously with the tooth plate, so as to ensure the stability of the sliding direction.

[0054] Working principle: by placing the dredging device in the inner wall of one end of the pipeline, the multiple rollers 208 on the connecting assembly 2 are in rolling contact with the inner wall of the pipeline, the outer wall of the scraper 405 is in frictional contact with the inner wall of the pipeline, the motor 301 drives the connecting sleeve 304 to rotate, the connecting sleeve 304 drives the multiple connecting arms 305 to rotate, the multiple connecting arms 305 drive the gear ring 105 to rotate, the gear ring 105 drives the multiple gear wheels 108 on the multiple mounting plates 106 to rotate synchronously, the multiple gear wheels 108 drive the multiple toothed plates 103 to slide outward along the inner wall of the fixed sleeve 102 and the fixed ring 101 respectively when rotating, the multiple toothed plates 103 drive the multiple limit plates 104 to move respectively when moving, the multiple toothed plates 103 and the multiple limit plates 104 can push the fixing frame 201 to move outward, at this time, the rollers 208 are extruded, the mounting frame 206 is pushed to slide into the fixing frame 201, the mounting frame 206 drives the connecting shaft 207 to slide along the slide rod 204 in the sliding groove 203 respectively at both ends, and stretches the spring 205, until the abutting block 209 on the outer end of the fixing frame 201 can abut against the inner wall of the pipeline, so as to fix the transmission assembly 1;

[0055] The output end of the electric push rod 401 extends outward through the push connecting plate 402 to move to the other end of the pipeline, the connecting plate 402 drives the scraper 405 to move along the inner wall of the pipeline through the connecting rod 403 when moving, so as to push the sludge attached to the inner wall of the pipeline to clean up;

[0056] When the scraper 405 stops moving, the motor 301 drives the gear ring 105 to rotate in the opposite direction, the gear ring 105 drives the multiple gear wheels 108 to rotate in the opposite direction, so that the multiple toothed plates 103 and the multiple limit plates 104 drive the fixing frame 201 to shrink respectively, at this time, the outer end of the multiple fixing frames 201 is separated from the abutment against the inner wall of the pipeline, at this time, the rollers 208 on the connecting assembly 2 are in contact with the inner wall of the pipeline, the output end is shrunk by the electric push rod 401, so as to pull the transmission assembly 1 and the driving assembly 3 in the opposite direction to move closer to the dredging assembly 4, so that the rollers 208 on the connecting assembly 2 roll along the inner wall of the pipeline.

[0057] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, the above examples and descriptions in the specification are only preferred examples of the present application, and are not intended to limit the present application, various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A pipe dredging and unblocking device comprising a transmission assembly (1), characterized in that: The plurality of output ends of the transmission assembly (1) are provided with the connecting assembly (2), the outer wall of the transmission assembly (1) is provided with the driving assembly (3), the outer wall of the transmission assembly (1) is provided with the dredging assembly (4), the driving assembly (3) is used for driving the output end of the transmission assembly (1) to slide, the transmission assembly (1) is used for driving the connecting assembly (2) to extrude the inner wall of the pipeline, the dredging assembly (4) is used for dredging the inner wall of the pipeline, the transmission assembly (1) comprises a fixed ring (101), a fixed sleeve (102) is coaxially arranged in the fixed ring (101), a plurality of tooth plates (103) are slidably connected to the outer wall of the fixed ring (101) in a radial direction, the outer ends of the plurality of tooth plates (103) penetrate the fixed ring (101) and extend to the outside of the fixed ring (101), the side walls of the plurality of tooth plates (103) are vertically provided with limiting plates (104), the outer ends of the plurality of limiting plates (104) penetrate the fixed ring (101) and are slidably connected to the fixed ring (101) in a radial direction, the inner ends of the plurality of tooth plates (103) penetrate the fixed sleeve (102) and extend to the inside of the fixed sleeve (102), the inner ends of the plurality of limiting plates (104) penetrate the fixed sleeve (102) and extend to the inside of the fixed sleeve (102), a plurality of mounting plates (106) are vertically fixed to the outer wall of the fixed ring (101) in a ring-shaped symmetrical structure, a rotating shaft (107) is rotatably connected to each of the plurality of mounting plates (106), a gear (108) is coaxially fixed to each of the plurality of rotating shafts (107), and the plurality of gears (108) are respectively engaged with adjacent tooth plates (103).

2. A pipe de-clogging device as claimed in claim 1, wherein: The inner wall of the fixed ring (101) is rotatably connected with a gear ring (105), the gear ring (105) is engaged with the plurality of gears (108), the connecting assembly (2) comprises a fixed frame (201), the outer side of the fixed frame (201) is provided with a mounting groove (202), the inner wall of the mounting groove (202) is provided with a sliding groove (203) on both sides, the inner wall of each of the two sliding grooves (203) is fixedly provided with a sliding rod (204), the circumferential outer wall of each of the two sliding rods (204) is sleeved with a spring (205), the inside of the mounting groove (202) is provided with a mounting frame (206), the inner wall of the mounting frame (206) is rotatably connected with a roller (208), the inner wall of the mounting frame (206) is rotatably connected with a connecting shaft (207), and the two ends of the connecting shaft (207) extend to the inner wall of the sliding groove (203).

3. A pipe de-clogging device as claimed in claim 2, wherein: One end of the spring (205) is connected and fixed to the inner wall of the sliding groove (203), and the other end of the spring (205) is connected and fixed to the connecting shaft (207).

4. A pipe de-clogging device as claimed in claim 3, wherein: The outer sides of the plurality of fixed frames (201) are fixedly provided with abutting blocks (209), and the abutting blocks (209) are rubber blocks. The inner sides of the plurality of fixed frames (201) are respectively connected and fixed to the tooth plates (103) and the limiting plates (104).

5. A pipe de-clogging device as claimed in claim 4, wherein: The driving assembly (3) comprises a fixed plate (302), a plurality of fixed rods (303) are fixedly arranged on the circumferential outer wall of the fixed plate (302) in an annular symmetric structure, a motor (301) is fixedly arranged on the side wall of the fixed plate (302), a connecting sleeve (304) is fixedly arranged on the output end of the motor (301), and a plurality of connecting arms (305) are fixedly arranged on the circumferential outer wall of the connecting sleeve (304) in an annular symmetric structure.

6. A pipe de-clogging device as claimed in claim 5, wherein: The outer ends of the plurality of fixed rods (303) are respectively connected and fixed with the inner wall of the fixed sleeve (102), and the outer ends of the plurality of connecting arms (305) are respectively connected and fixed with the gear ring (105).

7. A pipe de-clogging device as claimed in claim 6, wherein: The dredging assembly (4) comprises a connecting plate (402) and an electric push rod (401), a plurality of connecting rods (403) are fixedly arranged on the circumferential outer wall of the connecting plate (402) in an annular symmetric structure, the connecting plate (402) is sleeved with a mounting sleeve (404) on the outside, the outer ends of the plurality of connecting rods (403) are respectively connected and fixed with the mounting sleeve (404), a scraper (405) is fixedly arranged on the circumferential outer wall of the mounting sleeve (404), the output end of the electric push rod (401) is connected and fixed with the connecting plate (402), and the end of the electric push rod (401) is connected and fixed with the fixed plate (302).

8. A method of clearing a pipe by the pipe clearing device of claim 7, characterized in that, The method comprises the following steps: S1, by placing the dredging device in the inner wall of one end of the pipeline, the plurality of rollers (208) on the connecting assembly (2) are in rolling contact with the inner wall of the pipeline, and the outer wall of the scraper (405) is in frictional contact with the inner wall of the pipeline; S2, the motor (301) drives the connecting sleeve (304) to rotate, the connecting sleeve (304) drives the plurality of connecting arms (305) to rotate, the plurality of connecting arms (305) drive the gear ring (105) to rotate, the gear ring (105) drives the plurality of gears (108) on the mounting plate (106) to rotate synchronously, the plurality of gears (108) drive the plurality of toothed plates (103) to slide outward along the inner walls of the fixed sleeve (102) and the fixed ring (101) when rotating, and the plurality of toothed plates (103) drive the limiting plates (104) to move when moving; S3, the plurality of toothed plates (103) and limiting plates (104) can push the fixed frame (201) to move outward when moving, at this time, the rollers (208) are extruded, the mounting frame (206) is pushed to slide into the fixed frame (201), the connecting shaft (207) is driven to slide along the slide rod (204) in the sliding groove (203) at both ends when the mounting frame (206) moves, and the spring (205) is stretched, until the abutting block (209) on the outer end of the fixed frame (201) abuts against the inner wall of the pipeline, so that the transmission assembly (1) is fixed; S4, the output end of the electric push rod (401) extends outward, the connecting plate (402) is pushed to move to the other end of the pipeline, the scraper (405) is driven to move along the inner wall of the pipeline by the connecting rod (403) when the connecting plate (402) moves, so that the sludge attached to the inner wall of the pipeline can be pushed to be cleaned. S5, when the scraper (405) stops moving, the motor (301) drives the gear ring (105) to rotate in reverse, the gear ring (105) drives a plurality of gear (108) to rotate in reverse, so that a plurality of toothed plates (103) and limit plates (104) drive the fixed frame (201) to shrink respectively, at this time, the outer end of the plurality of fixed frames (201) is separated from the abutment of the inner wall of the pipeline, at this time, the roller (208) on the connecting assembly (2) is in contact with the inner wall of the pipeline, and the output end is driven to shrink through the electric push rod (401), so as to reversely pull the transmission assembly (1) and the driving assembly (3) to move towards the side close to the dredging assembly (4), so that the roller (208) on the connecting assembly (2) rolls along the inner wall of the pipeline.

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