Inner wall cleaning device for fire-fighting pipeline maintenance

Abstract

The utility model relates to the technical field of fire-fighting pipelines, in particular to an inner wall cleaning device for fire-fighting pipeline maintenance, which comprises two symmetrically arranged fixing discs, a connecting pipe is arranged between the two fixing discs, and a plurality of moving mechanisms are annularly arranged on the outer wall of the connecting pipe at equal angles. According to the device, through rotation of the multiple rubber wheels and rotation of the connecting pipe, the device can spray water to the inner wall of the pipeline and brush away rust on the inner wall of the pipeline while moving; water columns sprayed by a plurality of spray heads in the advancing direction of the device not only can wash off soil on the inner wall of the pipeline, but also can moisten and lubricate the inner wall of the pipeline, so that rust on the inner wall of the pipeline can be conveniently cleaned by a plurality of steel brushes; and then water columns sprayed by the multiple nozzles located on the rear portion can wash away soil and rust remaining on the inner wall of the pipeline, and the inner wall of the pipeline can be cleaned more thoroughly.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting pipelines, and in particular to an inner wall cleaning device for fire-fighting pipeline maintenance. Background Art

[0002] Fire-fighting pipes refer to pipe materials used in fire-fighting to connect fire-fighting equipment and instruments and to transport water, gas or other media for fire-fighting. Due to special needs, there are special requirements for the thickness and material of fire-fighting pipes, and they are sprayed with red paint to transport water for fire-fighting. Since fire-fighting pipes are often in a static state, the requirements for the pipes are relatively strict. Fire-fighting pipes need to be maintained during their use, and the inner walls of the fire-fighting pipes need to be cleaned during their maintenance.

[0003] The currently existing pipeline cleaning device is a pipeline robot, which sprays high-pressure water jets while moving, and cleans the inner wall of the pipeline by rotating and moving the water jets. However, due to the long-term presence of water on the inner wall of the pipeline, a large amount of rust is attached to the inner wall of the pipeline. Although the high-pressure water jet can wash away the mud attached to the inner wall of the pipeline, the attached rust is difficult to be cleaned away by the high-pressure water jet. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of the utility model is to provide an inner wall cleaning device for fire-fighting pipe maintenance. Through the rotation of multiple rubber wheels and the rotation of connecting pipes, the device can spray water to the inner wall of the pipe while brushing off the rust on the inner wall of the pipe while moving, and the water columns sprayed by multiple nozzles located in the forward direction of the device can not only flush away the mud on the inner wall of the pipe but also moisten and lubricate the inner wall of the pipe, making it convenient for multiple steel brushes to clean away the rust on the inner wall of the pipe, and then the water columns sprayed by the multiple nozzles located at the rear can flush away the mud and rust remaining on the inner wall of the pipe, so that the inner wall of the pipe can be cleaned more cleanly.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A fire protection pipe inner wall cleaning device for maintenance, comprising two symmetrically arranged fixed disks, a connecting pipe is arranged between the two fixed disks, a plurality of moving mechanisms are arranged at equal angles in an annular manner on the outer wall of the connecting pipe, a rust removal mechanism is arranged between the connecting pipe and one of the fixed disks, a chamber is provided inside the fixed disk, a plurality of circular tubes are rotatably penetrated at equal angles in an annular manner between the two fixed disks, sleeves communicating with the interior of the circular tube at the corresponding position are fixedly connected in the chambers at the two ends of the outer wall of the circular tube and located at corresponding positions, a plurality of water outlets are arranged at equal angles in an annular manner on the outer wall of the sleeve, and a plurality of nozzles communicating with the interior of the fixed disk at the corresponding position are fixed at equal angles on the outer wall of the fixed disk;

[0007] The moving mechanism includes a screw rod that rotates on the inner bottom surface of a storage groove at a corresponding position. A limiting block is screwed onto the outer wall of the screw rod. The top surface of the limiting block is fixedly connected to a U-shaped frame. A rotating shaft is rotatably connected between the opposite inner side surfaces inside the U-shaped frame. Rubber wheels are fixedly connected to both ends of the outer wall of the rotating shaft. A plurality of rectangular grooves are annularly and equiangularly formed on the outer wall of the connecting pipe. The rust removal mechanism includes a plurality of bidirectional screw rods that rotate between the two short side surfaces of the rectangular grooves at corresponding positions and a plurality of steel brushes. Moving blocks are screwed onto both ends of the outer wall of the bidirectional screw rod. A connecting rod is rotatably connected between the moving block and the steel brush.

[0008] Furthermore: A first toothed ring is fixedly connected to the inner wall of the connecting pipe. A second spur gear that meshes with the first toothed ring is fixedly connected to the outer wall of the circular pipe. First spur gears are fixedly connected to both ends of the outer wall of the circular pipe. A rotating rod is rotatably penetrated between the two chambers. Connecting rods that rotatably penetrate the corresponding fixed disks are rotatably connected to both ends of the rotating rod. A motor is provided on one side of one of the fixed disks. The output end of the motor is fixedly connected to the corresponding connecting rod. A third spur gear that meshes with the corresponding first spur gears is fixedly connected to the outer wall of the connecting rod. The end of the rotating rod away from the motor rotatably penetrates the corresponding connecting rod and is fixedly connected to a rotating block.

[0009] Furthermore: A first bevel gear is fixedly connected to the outer wall of the rotating rod located in the chamber. A second bevel gear is fixedly connected to the outer wall of the connecting rod. The bottom end of the screw rod penetrates the inner bottom surface of the storage groove and is fixedly connected to a third bevel gear that meshes with the corresponding first bevel gear. A worm gear is fixedly connected to the outer wall of the rotating shaft. A second fixing block is fixedly connected to one side surface of the limiting block. A worm that meshes with the corresponding worm gear penetrates one side surface of the second fixing block. A sleeve is slidably sleeved on the outer wall of the worm. A fourth bevel gear that meshes with the corresponding second bevel gear is fixedly connected to the bottom end of the sleeve.

[0010] Furthermore: One end of the bidirectional screw rod penetrates one end of the connecting pipe and is fixedly connected to a fourth spur gear. A rotating ring is rotatably connected between one of the fixed disks of the connecting pipe. A second toothed ring that meshes with the plurality of fourth spur gears is fixedly connected to the inner wall of the rotating ring. The other end of the connecting pipe is rotatably connected to the corresponding fixed disk. A plurality of hemispherical grooves are annularly and equiangularly formed on the inner wall of the rotating ring. A plurality of cylindrical grooves are annularly and equiangularly formed on one end of the outer wall of the connecting pipe. Spring steel balls that are clamped with the corresponding hemispherical grooves are fixedly connected inside the cylindrical grooves.

[0011] Furthermore: A protective shell is fixedly connected to one side surface of the other fixed disk. A backing plate that is fixed to the motor is fixedly connected inside the protective shell.

[0012] Furthermore, a fixing block 1 which penetrates and is fixed to the sleeve at the corresponding position is fixedly connected to one side of the fixing plate at the corresponding sleeve.

[0013] Furthermore, a sliding groove is provided on the inner side of the storage groove, and sliding blocks which are slidably connected to the sliding grooves at corresponding positions are fixedly connected to the two opposite side surfaces of the limit block.

[0014] Beneficial effects of the utility model:

[0015] 1. Through the rotation of multiple rubber wheels and the rotation of the connecting pipe, the device can spray water to the inner wall of the pipe while brushing off the rust on the inner wall of the pipe while moving, and the water columns sprayed by the multiple nozzles located in the forward direction of the device can not only wash away the mud on the inner wall of the pipe, but also moisten and lubricate the inner wall of the pipe, so that multiple steel brushes can clean off the rust on the inner wall of the pipe, and then the water columns sprayed by the multiple nozzles located at the rear can wash away the mud and rust remaining on the inner wall of the pipe, so that the inner wall of the pipe can be cleaned more cleanly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the connection between the protective shell and one of the fixing plates in the utility model;

[0019] Figure 3 It is a schematic diagram of the connecting pipe in the utility model;

[0020] Figure 4 This is a schematic diagram of the circular tube in the utility model;

[0021] Figure 5 This is a schematic diagram of the transfer rod of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the mobile mechanism in the utility model;

[0023] Figure 7 It is a structural schematic diagram of the rust removal mechanism in the utility model.

[0024] In the figure: 1, fixed plate; 11, storage slot; 12, fixed block 1; 13, nozzle; 14, protective shell; 15, pad; 16, slide; 2, connecting pipe; 21, rectangular slot; 22, gear ring 1; 3, round pipe; 31, sleeve; 32, water outlet; 33, spur gear 1; 34, spur gear 2; 4, rotating rod; 41, motor; 42, spur gear 3; 43, bevel gear 1; 44, bevel gear Gear 2; 5. Moving mechanism; 51. Screw; 52. Limit block; 53. Profile frame; 54. Rubber wheel; 55. Bevel gear 3; 56. Worm wheel; 57. Worm; 58. Sleeve; 59. Bevel gear 4; 6. Rust removal mechanism; 61. Bidirectional screw; 62. Steel brush; 63. Moving block; 64. Connecting rod; 65. Spur gear 4; 66. Rotating ring; 67. Gear ring 2; 68. Hemispherical groove. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-7 As shown, an inner wall cleaning device for fire protection pipe maintenance comprises two symmetrically arranged fixed disks 1, a connecting pipe 2 is arranged between the two fixed disks 1, a plurality of moving mechanisms 5 are arranged at equal angles in an annular manner on the outer wall of the connecting pipe 2, a rust removal mechanism 6 is arranged between the connecting pipe 2 and one of the fixed disks 1, a chamber is provided inside the fixed disk 1, a plurality of circular tubes 3 are rotatably penetrated at equal angles in an annular manner between the two fixed disks 1, sleeves 31 communicating with the inside of the circular tube 3 at the corresponding position are fixedly connected in the chambers at the two ends of the outer wall of the circular tube 3 and located at the corresponding positions, a plurality of water outlets 32 are rotatably penetrated in an annular manner on the outer wall of the sleeve 31 at equal angles, and a plurality of nozzles 13 communicating with the inside of the fixed disk 1 at the corresponding position are fixedly fixed on the outer wall of the fixed disk 1 at equal angles;

[0027] The moving mechanism 5 includes a screw rod 51 which rotates on the bottom surface of the storage groove 11 located at the corresponding position, the outer wall of the screw rod 51 is screwed and connected to the limit block 52, the top surface of the limit block 52 is fixedly connected to a profile frame 53, a rotating shaft is rotatably connected between the two opposite side surfaces inside the profile frame 53, and rubber wheels 54 are fixedly connected to the outer wall of the rotating shaft at both ends. A plurality of rectangular grooves 21 are formed in an annular manner at equal angles on the outer wall of the connecting pipe 2, a plurality of bidirectional screw rods 61 and a plurality of steel brushes 62 which rotate between the two short side surfaces in the rectangular grooves 21 located at the corresponding positions, the outer wall of the bidirectional screw rod 61 is screwed and connected to the moving block 63 at both ends, and the moving block 63 is screwed and connected to the moving block 63. A connecting rod 64 is rotatably connected between the moving block 63 and the steel brush 62. Through the rotation of the multiple rubber wheels 54 and the connecting pipe 2, the device can spray water to the inner wall of the pipe while brushing off the rust on the inner wall of the pipe while moving. The water columns sprayed by the multiple nozzles 13 located in the forward direction of the device can not only wash away the mud on the inner wall of the pipe but also moisten and lubricate the inner wall of the pipe, which is convenient for the multiple steel brushes 62 to clean the rust on the inner wall of the pipe. Then, the water columns sprayed by the multiple nozzles 13 located at the rear can wash away the mud and rust remaining on the inner wall of the pipe, so that the inner wall of the pipe can be cleaned more cleanly.

[0028] The inner wall of the connecting tube 2 is fixedly connected with a gear ring 22, the outer wall of the circular tube 3 is fixedly connected with a spur gear 2 34 meshing with the gear ring 22, and both ends of the outer wall of the circular tube 3 are fixedly connected with spur gears 33. A rotating rod 4 is rotatably passed through the two chambers, and both ends of the rotating rod 4 are rotatably connected with connecting rods that pass through and rotate with the fixed disks 1 at the corresponding positions. A motor 41 is provided on one side of one of the fixed disks 1, and the output end of the motor 41 is fixedly connected with the connecting rod at the corresponding position, and the outer wall of the connecting rod is fixedly connected with a spur gear 3 42 meshing with multiple spur gears 33 at the corresponding positions. One end of the rotating rod 4 away from the motor 41 passes through and rotates with the connecting rod at the corresponding position and is fixedly connected with a rotating block. By starting the motor 41, multiple rubber wheels 54 and the connecting tube 2 can be rotated, and multiple rotating rubber wheels 54 can make the modification move. The rotation of the connecting tube 2 can rotate multiple steel brushes 62, so that The device can be used to spray water to the inner wall of the pipeline while brushing off the rust on the inner wall of the pipeline. The outer wall of the rotating rod 4 in the chamber is fixedly connected to a bevel gear 1 43, the outer wall of the connecting rod is fixedly connected to a bevel gear 2 44, the bottom end of the screw 51 passes through the inner bottom surface of the storage groove 11 and is fixedly connected to a bevel gear 3 55 meshing with the bevel gear 1 43 at the corresponding position, the outer wall of the rotating shaft is fixedly connected to a worm gear 56, one side of the limit block 52 is fixedly understood to have a fixed block 2, one side of the fixed block 2 is penetrated by a worm 57 meshing with the worm gear 56 at the corresponding position, the outer wall of the worm 57 is slidably sleeved with a sleeve 58, the bottom end of the sleeve 58 is fixedly connected to a bevel gear 4 59 meshing with the bevel gear 2 44 at the corresponding position, the rotation of the worm 57 can make the worm wheel 56 at the corresponding position drive the two rubber wheels 54 at the corresponding position to rotate, so that the device can move on the inner wall of the pipeline.

[0029] One end of the bidirectional screw rod 61 passes through one end of the connecting pipe 2 and is fixedly connected to a spur gear four 65. A rotating ring 66 is rotatably connected between one of the fixed disks 1 of the connecting pipe 2. The inner wall of the rotating ring 66 is fixedly connected to a gear ring two 67 meshing with multiple spur gears four 65. The other end of the connecting pipe 2 is rotatably connected to the fixed disk 1 at the corresponding position. The inner wall of the rotating ring 66 is provided with multiple hemispherical grooves 68 at equal angles in an annular manner. One end of the outer wall of the connecting pipe 2 is provided with multiple cylindrical grooves at equal angles in an annular manner. The inside of the cylindrical groove is fixedly connected with a spring steel ball engaged with the hemispherical groove 68 at the corresponding position. The rotation of the rotating ring 66 can make the gear ring two 67 drive the multiple spur gears four 65 to rotate. The rotating spur gear four 65 can make the bidirectional screw rod 61 at the corresponding position rotate, so that the steel brush 62 can contact the inner wall of the pipe, which is convenient for the steel brush 62 to brush the inner wall of the pipe. The rust is cleaned off, and a protective shell 14 is fixedly connected to one side of the other fixed disk 1, and a pad 15 fixed to the inside of the protective shell 14 is fixedly connected to the motor 41. The protective shell 14 and the pad 15 are used to fix the motor 41. A fixed block 12 is fixedly connected to one side of the fixed disk 1 and the corresponding sleeve 58, and the sleeve 58 at the corresponding position is fixedly connected to the fixed block 12. The fixed block 12 can prevent the movement of the worm 57 at the corresponding position from driving the sleeve 58 at the corresponding position to move, so that the bevel gear four 59 at the corresponding position is separated from the bevel gear two 44 at the corresponding position. A slide groove 16 is provided on the inner side of the storage groove 11, and the two opposite side surfaces of the limit block 52 are fixedly connected with sliders slidably connected to the slide groove 16 at the corresponding position. The stability of the limit block 52 when moving can be increased by sliding the slider to the slide groove 16 at the corresponding position.

[0030] Working principle: when in use, first put the device in the fire-fighting pipe, and then rotate the rotating block to make the rotating rod 4 drive the two bevel gears 1 43 to rotate, and the rotating bevel gear 1 43 can make the multiple bevel gears 3 55 at the corresponding position drive the screw 51 at the corresponding position to rotate, and the rotating screw 51 can make the limit block 52 at the corresponding position drive the two rubber wheels 54 at the corresponding position to move, until the multiple rubber wheels 54 are in close contact with the inner lining of the pipe, and then rotate the rotating ring 66 to make the gear ring 2 67 drive the multiple spur gears 4 65 to rotate, and the rotating spur gear 4 65 can make the bidirectional screw rod 61 at the corresponding position rotate, and the rotating bidirectional screw rod 61 can make the two movable The moving blocks 63 are close to each other, so that the multiple steel brushes 62 can be moved away from each other until the multiple steel brushes 62 contact the inner wall of the pipe, and then one end of the external water pipe is fixed on the rotating head and inserted into the inside of the circular pipe 3 at the corresponding position, and high-pressure water is filled into the inside of the multiple circular pipes 3. The high-pressure water filled into the circular pipe 3 flows into the chamber at the corresponding position from the multiple water outlets 32 at the corresponding position and is sprayed out from the multiple nozzles 13 at the corresponding position. The sprayed high-pressure water column can wash away the mud attached to the inner wall of the pipe and flow out with the water flow. At the same time, starting the motor 41 can make the spur gear three 42 and the bevel gear two 44 at the corresponding position rotate, and the rotating bevel gear two 44 can make the corresponding position The bevel gear four 59 drives the sleeve 58 at the corresponding position to rotate. The rotating sleeve 58 can make the worm 57 at the corresponding position drive the worm wheel 56 at the corresponding position to rotate. The rotating worm wheel 56 can make the two rubber wheels 54 at the corresponding position rotate. At the same time, the rotating spur gear three 42 can make the multiple spur gears one 33 drive the round tube 3 at the corresponding position to rotate. The rotating round tube 3 can make the multiple spur gears one 33 at the other end rotate, so that the spur gear three 42 and the bevel gear two 44 on the other connecting rod can rotate, so that the rubber wheels 54 on the other fixed disk 1 can be rotated. The multiple rotating rubber wheels 54 can make the two fixed disks 1 and the connecting pipe 2 move in the pipeline. At the same time, the rotating The moving circular tube 3 can make the spur gear 2 34 rotate, and the multiple rotating spur gears 2 34 can make the gear ring 1 22 drive the connecting pipe 2 to rotate, and the rotating connecting pipe 2 can make the multiple steel brushes 62 rotate, so that the device can spray water to the inner wall of the pipe while brushing off the rust on the inner wall of the pipe while moving, and the water columns sprayed by the multiple nozzles 13 located in the forward direction of the device can not only flush away the mud on the inner wall of the pipe but also moisten and lubricate the inner wall of the pipe, so that the multiple steel brushes 62 can clean the rust on the inner wall of the pipe, and then the water columns sprayed by the multiple nozzles 13 located at the rear can flush away the mud and rust remaining on the inner wall of the pipe, so that the inner wall of the pipe can be cleaned more cleanly.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above contents are merely examples and explanations of the present utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the present utility model.

Claims

1. An inner wall cleaning device for fire protection pipeline maintenance, characterized in that: The invention comprises two symmetrically arranged fixed disks (1), a connecting pipe (2) is arranged between the two fixed disks (1), a plurality of moving mechanisms (5) are arranged in an annular manner at equal angles on the outer wall of the connecting pipe (2), a rust removal mechanism (6) is arranged between the connecting pipe (2) and one of the fixed disks (1), a chamber is provided inside the fixed disk (1), a plurality of circular tubes (3) are rotatably penetrated in an annular manner at equal angles between the two fixed disks (1), sleeves (31) communicating with the interior of the circular tube (3) at the corresponding position are fixedly connected to the chambers at the two ends of the outer wall of the circular tube (3), a plurality of water outlets (32) are arranged in an annular manner at equal angles on the outer wall of the sleeve (31), and a plurality of nozzles (13) communicating with the interior of the fixed disk (1) at the corresponding position are fixedly connected to the outer wall of the fixed disk (1); The moving mechanism (5) comprises a screw (51) which rotates on the bottom surface of the storage groove (11) located at a corresponding position, the outer wall of the screw (51) is screwed and connected to a limit block (52), the top surface of the limit block (52) is fixedly connected to a shaped frame (53), a rotating shaft is rotatably connected between two opposite side surfaces inside the shaped frame (53), and rubber wheels (54) are fixedly connected to both ends of the outer wall of the rotating shaft, a plurality of rectangular grooves (21) are annularly formed at equal angles on the outer wall of the connecting tube (2), the rust removal mechanism (6) comprises a plurality of bidirectional screws (61) and a plurality of steel brushes (62) which rotate between two short side surfaces in the rectangular grooves (21) located at corresponding positions, the outer wall of the bidirectional screw (61) is screwed and connected to a moving block (63) at both ends, and a connecting rod (64) is rotatably connected between the moving block (63) and the steel brush (62).

2. The inner wall cleaning device for fire protection pipe maintenance according to claim 1 is characterized in that: The inner wall of the connecting tube (2) is fixedly connected to a gear ring 1 (22), the outer wall of the circular tube (3) is fixedly connected to a spur gear 2 (34) meshing with the gear ring 1 (22), and both ends of the outer wall of the circular tube (3) are fixedly connected to spur gears 1 (33). A rotating rod (4) is rotatably passed through the interiors of the two chambers, and both ends of the rotating rod (4) are rotatably connected to connecting rods that rotate through and through the fixed disks (1) at corresponding positions. A motor (41) is provided on one side of one of the fixed disks (1), and the output end of the motor (41) is fixedly connected to the connecting rod at the corresponding position. The outer wall of the connecting rod is fixedly connected to a spur gear 3 (42) meshing with a plurality of spur gears 1 (33) at the corresponding positions. One end of the rotating rod (4) away from the motor (41) rotates through and through the connecting rod at the corresponding position and is fixedly connected to a rotating block.

3. The inner wall cleaning device for fire protection pipe maintenance according to claim 2 is characterized in that: The outer wall of the rotating rod (4) located in the chamber is fixedly connected to a bevel gear 1 (43), the outer wall of the connecting rod is fixedly connected to a bevel gear 2 (44), the bottom end of the screw rod (51) passes through the inner bottom surface of the receiving groove (11) and is fixedly connected to a bevel gear 3 (55) meshing with the bevel gear 1 (43) at the corresponding position, the outer wall of the rotating shaft is fixedly connected to a worm gear (56), a side surface of the limit block (52) is fixedly understood to have a fixed block 2, a side surface of the fixed block 2 passes through a worm (57) meshing with the worm gear (56) at the corresponding position, the outer wall of the worm gear (57) is slidably sleeved with a sleeve (58), and the bottom end of the sleeve (58) is fixedly connected to a bevel gear 4 (59) meshing with the bevel gear 2 (44) at the corresponding position.

4. The inner wall cleaning device for fire protection pipe maintenance according to claim 3 is characterized in that: One end of the bidirectional screw rod (61) passes through one end of the connecting tube (2) and is fixedly connected to a spur gear four (65); a rotating ring (66) is rotatably connected between one of the fixed disks (1) of the connecting tube (2); a gear ring two (67) meshing with a plurality of spur gears four (65) is fixedly connected to the inner wall of the rotating ring (66); the other end of the connecting tube (2) is rotatably connected to the fixed disk (1) at a corresponding position; a plurality of hemispherical grooves (68) are formed in an annular manner on the inner wall of the rotating ring (66); a plurality of cylindrical grooves are formed in an annular manner on one end of the outer wall of the connecting tube (2); a spring steel ball that is engaged with the hemispherical groove (68) at a corresponding position is fixedly connected to the inside of the cylindrical groove.

5. The inner wall cleaning device for fire protection pipeline maintenance according to claim 4 is characterized in that: A protective shell (14) is fixedly connected to one side of the other fixed disk (1), and a pad (15) fixed to the motor (41) is fixedly connected inside the protective shell (14).

6. The inner wall cleaning device for fire protection pipe maintenance according to claim 4 is characterized in that: A fixing block (12) is fixedly connected to a side surface of the fixing plate (1) and corresponding to the sleeve (58) and penetrates and is fixed to the sleeve (58) at the corresponding position.

7. The inner wall cleaning device for fire protection pipeline maintenance according to claim 4 is characterized in that: A sliding groove (16) is provided on the inner side surface of the storage groove (11), and two opposing side surfaces of the limit block (52) are fixedly connected with sliding blocks that are slidably connected to the sliding groove (16) at corresponding positions.

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