阅读说明：本技术 一种钢管内壁除锈清洁机 (Steel pipe inner wall rust cleaning machine ) 是由 沈永峰 吴恩 王红艳 于 2021-08-12 设计创作，主要内容包括：本申请涉及一种钢管内壁除锈清洁机,涉及除锈设备领域,其包括机体,所述机体的输出轴外缘设置有外接块,所述外接块沿外周设置有多根除锈链,所有所述除锈链与外接块共同设置有固定件,所述固定件包括相互对称的两块固定弧板；两块所述固定弧板共同套设于外接块外缘,且两块所述固定弧板相互朝向的端壁相抵；所有所述除锈链通过定位组件分别设置于两块固定弧板远离外接块的侧壁上；两块所述固定弧板与外接块共同设置有连接组件。本申请具有便于操作人员快速老旧的除锈链,保障了除锈链在钢管内的除锈效率的效果。(The application relates to a steel pipe inner wall rust removal cleaning machine, which relates to the field of rust removal equipment and comprises a machine body, wherein an outer connecting block is arranged at the outer edge of an output shaft of the machine body, a plurality of rust removal chains are arranged on the periphery of the outer connecting block, all the rust removal chains and the outer connecting block are provided with a fixing piece together, and the fixing piece comprises two fixing arc plates which are symmetrical to each other; the two fixed arc plates are commonly sleeved on the outer edge of the external connection block, and the end walls of the two fixed arc plates which face each other are abutted; all the derusting chains are respectively arranged on the side walls of the two fixed arc plates far away from the external connecting block through the positioning assemblies; and the two fixed arc plates and the external connecting block are provided with a connecting assembly together. This application has the quick old rust cleaning chain of operating personnel of being convenient for, has ensured the effect of the rust cleaning efficiency of rust cleaning chain in the steel pipe.)

1. The utility model provides a steel pipe inner wall rust cleaning machine, includes organism (1), the output shaft outer fringe of organism (1) is provided with outer joint block (11), outer joint block (11) are provided with many rust cleaning chains (12), its characterized in that along the periphery: all the derusting chains (12) and the external connecting blocks (11) are provided with fixing pieces (2) together, and each fixing piece (2) comprises two fixing arc plates (21) which are symmetrical to each other; the two fixed arc plates (21) are sleeved on the outer edge of the external connecting block (11) together, and the end walls of the two fixed arc plates (21) which face each other are abutted; all the derusting chains (12) are respectively arranged on the side walls of the two fixed arc plates (21) far away from the external connecting block (11) through the positioning components (3); and the two fixed arc plates (21) and the external connecting block (11) are provided with a connecting component (6) together.

2. The steel pipe inner wall rust removal cleaning machine as claimed in claim 1, characterized in that: each fixed arc plate (21) and the external connecting block (11) are respectively provided with a clamping component (5), and each clamping component (5) comprises a directional screw rod (51) and a fastening nut (52); the directional screw rod (51) is arranged on the outer side wall of the external connecting block (11), and one end, far away from the external connecting block (11), of the directional screw rod (51) penetrates through the fixed arc plate (21); the fastening nut (52) is in threaded fit with the outer edge of the directional screw rod (51) so that the fixed arc plate (21) is fixed on the outer edge of the directional screw rod (51).

3. The steel pipe inner wall rust removal cleaning machine as claimed in claim 2, characterized in that: the outer edge of the external connecting block (11) is provided with a propping piece (111), and the propping piece (111) is tightly matched between the external connecting block (11) and the fixed arc plate (21).

4. The steel pipe inner wall rust removal cleaning machine as claimed in claim 3, characterized in that: one end wall in the length direction of the fixed arc plate (21) is provided with a diameter-changing block (213), and the other end wall in the length direction of the fixed arc plate (21) is provided with an adapting groove (214) for the diameter-changing block (213) to abut into.

5. The steel pipe inner wall rust removal cleaning machine as claimed in claim 4, characterized in that: the fixed arc plate (21) is provided with a butt joint plate (215) in the adapting groove (214), and the diameter changing blocks (213) and the butt joint plate (215) which are mutually butted attract each other in a magnetic way.

6. The steel pipe inner wall rust removal cleaning machine as claimed in claim 1, characterized in that: the positioning assembly (3) comprises an installation arc plate (31) and a positioning bolt (32); the installation arc plate (31) is arranged at one end, facing the fixed arc plate (21), of the derusting chain (12), and the positioning bolt (32) is used for fixedly connecting the installation arc plate (31) and the fixed arc plate (21).

7. The steel pipe inner wall rust removal cleaning machine as claimed in claim 6, characterized in that: the side wall of the fixed arc plate (21) far away from the external connecting block (11) is provided with a limit groove (211) for the installation arc plate (31) to abut into.

8. The steel pipe inner wall rust removal cleaning machine as claimed in claim 7, characterized in that: the side wall of the installation arc plate (31) facing the fixed arc plate (21) is provided with a fastening piece (4), and the fastening piece (4) comprises a plurality of groups of compression springs (41) and a plurality of connecting blocks (42); all the compression springs (41) are arranged on the side wall, facing the fixed arc plate (21), of the installation arc plate (31) at intervals, and each connecting block (42) is correspondingly arranged at one end, far away from the installation arc plate (31), of each compression spring (41); fixed arc board (21) are provided with multiunit joint groove (212) in spacing groove (211) inside wall, every connecting block (42) correspond the butt in joint groove (212).

9. The steel pipe inner wall rust removal cleaning machine as claimed in claim 8, characterized in that: the outer side wall of the mounting arc plate (31) is provided with a protective cylinder (311) around the periphery of each compression spring (41), and the protective cylinders (311) are in clearance fit with the connecting block (42).

10. The steel pipe inner wall rust removal cleaning machine as claimed in claim 1, characterized in that: the connecting assembly (6) comprises two extension plates (61) and two groups of connecting pieces (62); the two extension plates (61) are oppositely arranged on the outer side wall of the external connecting block (11), and the two fixed arc plates (21) are simultaneously abutted between the two extension plates (61); connecting piece (62) are including connecting bolt (621) and coupling nut (622), the body of rod of connecting bolt (621) runs through two extension boards (61) and a fixed arc board (21) simultaneously, coupling nut (622) screw-thread fit is in the body of rod outer fringe of connecting bolt (621), so that fixed arc board (21) are fixed in between two extension boards (61).

Technical Field

The application relates to the field of rust removal equipment, in particular to a steel pipe inner wall rust removal cleaning machine.

Background

The steel pipe can be rusted on the inner side of the pipeline after being used for a period of time, and the rusted steel pipe is greatly reduced in application strength and application stability, so that the inner side of the steel pipe needs to be subjected to rust removal treatment. The existing rust removal modes are mainly three types, namely spraying epoxy powder for rust removal, chemical rust remover rust removal and rust removal by a rust remover, wherein the rust remover polishes and rubs the inner wall of the steel pipe in a physical mode to remove an oxide scale layer bonded on the inner wall of the steel pipe, and further the effect of removing rust on the inner side of the steel pipe is achieved.

Chinese patent No. CN201998026U discloses a rust removing cleaning machine for inner wall of steel tube, which comprises a pneumatic grinder, a bracket and a traction piece. The pneumatic grinder is sequentially provided with an air inlet, a rear body, a wind shielding sleeve, a front body and a grinding wheel output shaft along the length direction, the bracket is arranged outside the wind shielding sleeve, the air inlet is used for being plugged with an air compressor serving as a power source, and the traction piece is sleeved on the outer edge of a rubber pipe at the position of the air inlet. A plurality of iron chains are uniformly welded on the peripheral surface of the output shaft of the grinding wheel, and a nut is arranged at one end, far away from the output shaft, of each iron chain. The pneumatic grinder is inserted into the inner cavity of the steel pipe to be derusted through the bracket, the air compressor drives the grinding wheel output shaft to rotate at a high speed, all iron chains stretch out radially under centrifugal action force at the moment, and the free ends of the iron chains are in movable friction with the inner side of the steel pipe so as to derust the inner side of the steel pipe.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the iron chain is easy to damage and age after frequent movable friction on the inner side of the steel pipe, and the iron chain is welded and fixed with the output shaft of the grinding wheel, so that the iron chain is inconvenient to disassemble for maintenance and replacement, and the subsequent rust removal efficiency of the iron chain on the inner side of the steel pipe is influenced.

Disclosure of Invention

In order to improve the inconvenient problem of dismantling with the maintenance, changing new of iron chain, this application provides a steel pipe inner wall cleaning machine that rust cleaning.

The application provides a steel pipe inner wall rust cleaning machine adopts following technical scheme:

a steel pipe inner wall rust removal cleaning machine comprises a machine body, wherein an outer connecting block is arranged on the outer edge of an output shaft of the machine body, a plurality of rust removal chains are arranged on the outer periphery of the outer connecting block, all the rust removal chains and the outer connecting block are provided with a fixing piece together, and the fixing piece comprises two fixing arc plates which are symmetrical to each other; the two fixed arc plates are commonly sleeved on the outer edge of the external connection block, and the end walls of the two fixed arc plates which face each other are abutted; all the derusting chains are respectively arranged on the side walls of the two fixed arc plates far away from the external connecting block through the positioning assemblies; and the two fixed arc plates and the external connecting block are provided with a connecting assembly together.

By adopting the technical scheme, the contact area of the rust removing chain and the external connecting block is increased by the fixed arc plate, the fixed arc plate is stably fixed at the outer edge of the external connecting block by the connecting assembly, and an operator can conveniently detach a certain number of rust removing chains simultaneously by detaching the fixed arc plate while ensuring the connection strength of the rust removing chain; each rust removing chain is independently fixed on the fixed arc plate through the positioning assembly, so that an operator can conveniently detach one rust removing chain for maintenance and replacement; the replaced derusting chain has small abrasion, and the friction strength of the inner side of the steel pipe is guaranteed, so that more rust on the inner side of the steel pipe can be efficiently removed within the same polishing time, and the derusting efficiency of the derusting chain on the inner side of the steel pipe is guaranteed.

Preferably, each fixed arc plate and the external block are respectively provided with a clamping component, and each clamping component comprises a directional screw rod and a fastening nut; the directional screw rod is arranged on the outer side wall of the external connecting block, and one end of the directional screw rod, which is far away from the external connecting block, penetrates through the fixed arc plate; the fastening nut is in threaded fit with the outer edge of the directional screw rod, so that the fixed arc plate is fixed on the outer edge of the directional screw rod.

By adopting the technical scheme, the directional screw rod is fixed at the outer edge of the external connection block, and after the fixed arc plate is sleeved outside the directional screw rod, the position of the fixed arc plate relative to the external connection block is limited; after the fastening nut is screwed down at the outer edge of the directional screw rod, the fixed arc plates are preliminarily positioned outside the external connection block, and therefore the butt joint stability and the connection tightness of the two fixed arc plates outside the external connection block are guaranteed.

Preferably, the outer edge of the external connecting block is provided with a propping piece, and the propping piece is tightly matched between the external connecting block and the fixed arc plate.

By adopting the technical scheme, the abutting piece abuts tightly between the external connecting block and the fixed arc plate through self compression deformation, so that the connection tightness of the fixed arc plate fixed outside the external connecting block is improved; the abutting piece can reduce the phenomena of loosening and swinging and deviation of the fixed arc plate relative to the external connection block through the characteristic that the static friction coefficient of the outer surface of the abutting piece is large, so that the connection strength of the derusting chain is improved, and the derusting efficiency of the derusting chain is guaranteed.

Preferably, one of the end walls in the length direction of the fixed arc plate is provided with a diameter-changing block, and the other end wall in the length direction of the fixed arc plate is provided with an adaptive groove for the diameter-changing block to abut into.

By adopting the technical scheme, the outer diameter of one end, facing the adaptive groove, of the reducing block is smaller, so that the reducing block and the reducing block can be quickly abutted into the inner cavity of the adaptive groove; along with reducing piece butt in adaptation inslot chamber, two fixed arc board length direction ends butt each other and be difficult for the pine shake, the bias movement, improved the joint strength of two fixed arc boards.

Preferably, the fixed arc plate is provided with a butt plate in the adapting groove, and the variable diameter block and the butt plate which are mutually butted attract each other in a magnetic manner.

Through adopting above-mentioned technical scheme, the butt joint board of neodymium iron boron magnetism magnet material and reducing piece magnetism attract the back mutually, have improved the joint strength after two fixed arc board length direction ends offset greatly, have further ensured the installation stability and the application stability of rust cleaning chain.

Preferably, the positioning assembly comprises a mounting arc plate and a positioning bolt; the installation arc plate is arranged at one end, facing the fixed arc plate, of the derusting chain, and the positioning bolts are used for fixedly connecting the installation arc plate and the fixed arc plate.

By adopting the technical scheme, the contact area of each rust removing chain and the fixed arc plate is increased by the installation of the arc plates, and the arc plates and the fixed arc plates are quickly and fixedly installed by the positioning bolts, so that the quick installation and disassembly of the rust removing chains on the fixed arc plates are realized;

preferably, the side wall of the fixed arc plate, which is far away from the external connection block, is provided with a limit groove for the installation of the arc plate to abut into.

Through adopting above-mentioned technical scheme, the spacing groove is used for injecing the position of installation arc board on fixed arc board, reduces the phenomenon that the relative fixed arc board of installation arc board pine shakes, moves partially, has improved the connection stability of installation arc board on fixed arc board.

Preferably, the side wall of the installation arc plate facing the fixed arc plate is provided with a fastener, and the fastener comprises a plurality of groups of compression springs and a plurality of connecting blocks; all the compression springs are arranged on the side wall of the installation arc plate facing the fixed arc plate at intervals, and each connecting block is correspondingly arranged at one end of each compression spring far away from the installation arc plate; the fixed arc plate is provided with a plurality of groups of clamping grooves in the inner side wall of the limiting groove, and each connecting block is correspondingly abutted to the clamping grooves.

Through adopting above-mentioned technical scheme, the joint inslot chamber is supported into to the connecting block for the installation arc board possesses more butt effort at the spacing inslot, and the reaction is in installation arc board behind the compression spring compression deformation, and then has improved the joint strength when positioning bolt locking installation arc board and fixed arc board, has further ensured the joint strength of rust cleaning chain.

Preferably, the outer side wall of the installation arc plate is provided with a protective cylinder around the periphery of each compression spring, and the protective cylinders are in clearance fit with the connecting blocks.

By adopting the technical scheme, the protective cylinder can provide lateral support for the compression spring, so that the phenomenon that the compression spring is bent by the connecting block under the action of gravity and is irreversibly deformed is reduced, and the normal service life of the compression spring is ensured; when compression spring is in shorter compression state, a protection section of thick bamboo offsets with the connecting block, and at this moment, installation arc board, a protection section of thick bamboo, connecting block and fixed arc board butt in proper order, positioning bolt fixed connection installation arc board and fixed arc board, rust cleaning chain also are in high connection stable state in convenient to detach.

Preferably, the connecting assembly comprises two extension plates and two groups of connecting pieces; the two extension plates are oppositely arranged on the outer side wall of the external connection block, and the two fixed arc plates are simultaneously abutted between the two extension plates; the connecting piece comprises a connecting bolt and a connecting nut, the rod body of the connecting bolt simultaneously penetrates through the two extending plates and the fixed arc plate, and the connecting nut is in threaded fit with the outer edge of the rod body of the connecting bolt, so that the fixed arc plate is fixed between the two extending plates.

By adopting the technical scheme, the two extension plates are simultaneously abutted against the two groups of fixed arc plates so as to ensure the position stability of the abutted positions of the two groups of fixed arc plates; the body of rod of connecting bolt runs through two extension boards and a fixed arc board simultaneously, and coupling nut screws up at connecting bolt's body of rod outer fringe screw thread for fixed arc board independently is fixed in between two extension boards, when guaranteeing fixed arc board positional stability, and the operating personnel of being convenient for dismantles fast.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the rust removing chains are fixed on the fixed arc plate through the positioning assembly, so that an operator can conveniently and independently detach any one rust removing chain for maintenance and replacement; the fixed arc plate is fixed on the external connecting block through the connecting assembly, so that an operator can conveniently detach the fixed arc plate to simultaneously detach the rust removing chains for maintenance and replacement;

2. after the directional screw rod penetrates through the fixed arc plate, the fastening nut is screwed on the outer edge of the directional screw rod, the connection strength of the fixed arc plate on the external connection block is guaranteed, and the position stability and the application stability of the fixed derusting chain are improved.

Drawings

FIG. 1 is a schematic structural diagram of a steel pipe inner wall rust removal cleaning machine according to an embodiment of the application;

FIG. 2 is a schematic view showing the connection relationship of the machine body, the fixing member and the rust removing chain;

FIG. 3 is an exploded view of the connection of the fixed arc plate and the circumscribing block;

FIG. 4 is an exploded view of the connection of the mounting arc plate and the fixed arc plate;

FIG. 5 is a schematic view showing the positional relationship of the connecting block, the elastic member, the positioning bolt and the mounting arc plate.

Description of reference numerals:

1. a body; 11. an external connection block; 111. an abutting piece; 12. a derusting chain; 2. a fixing member; 21. fixing the arc plate; 211. a limiting groove; 212. a clamping groove; 213. a diameter-variable block; 214. an adaptation groove; 215. a butt joint plate; 3. a positioning assembly; 31. installing an arc plate; 311. a protective cylinder; 32. positioning the bolt; 4. a fastener; 41. a compression spring; 42. connecting blocks; 5. a clamping component; 51. a directional screw rod; 52. fastening a nut; 6. a connecting assembly; 61. an extension plate; 62. a connecting member; 621. a connecting bolt; 622. and connecting a nut.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a steel pipe inner wall rust removal cleaning machine. Referring to fig. 1, a steel pipe inner wall rust removing and cleaning machine includes a machine body 1. In the present embodiment, the machine body 1 is a pneumatic grinder. An external block 11 with a circular horizontal section is integrally formed at the outer edge of an output shaft of the machine body 1, and a plurality of derusting chains 12 are detachably arranged at the outer edge of the external block 11 through a fixing piece 2. The machine body 1 can extend into a steel pipe to be derusted, and all the derusting chains 12 are movably rubbed on the inner side wall of the steel pipe along with the rotation of an output shaft of the machine body 1 so as to remove rust on the inner side of the steel pipe.

Referring to fig. 2 and 3, the fixing member 2 includes two fixing arc plates 21 that are symmetrical to each other, and the inner diameter radian of the fixing arc plates 21 is matched with the outer circumference radian of the outer connecting block 11. After the two fixed arc plates 21 are simultaneously sleeved outside the external connecting block 11, the end walls of the two fixed arc plates 21 facing each other are abutted. In the embodiment, the number of the rust removing chains 12 can be four, and two rust removing chains 12 are fixed on the side wall of each fixed arc plate 21 far away from the external block 11 through the positioning assembly 3.

Referring to fig. 3 and 4, the positioning assembly 3 comprises an installation arc plate 31 and a positioning bolt 32, and one end of the rust removing chain 12 in the length direction is welded with the side wall of the installation arc plate 31 far away from the outer joint block 11. The internal diameter radian of installation arc board 31 and the periphery radian looks adaptation of fixed arc board 21, the lateral wall that external piece 11 was kept away from to fixed arc board 21 is provided with spacing groove 211, the internal diameter size of spacing groove 211 and the periphery size looks adaptation of installation arc board 31, and the thickness dimension of installation arc board 31 is less than the degree of depth size of spacing groove 211 inner chamber. After the installation arc plate 31 butts into the inner cavity of the limiting groove 211, the positioning bolts 32 are fixedly connected with the installation arc plate 31 and the fixed arc plate 21, the rust removing chain 12 is quickly fixed on the outer side wall of the fixed arc plate 21, and the operator can conveniently detach the rust removing chain 12 for maintenance and renewal.

Referring to fig. 5, the mounting arc plate 31 is provided with a fastener 4 towards the side wall of the fixed arc plate 21, the fastener 4 includes a plurality of sets of compression springs 41 and a plurality of sets of connection blocks 42, in this embodiment, each mounting arc plate 31 can weld two compression springs 41 towards the side wall of the fixed arc plate 21 at intervals, the outer side wall of the mounting arc plate 31 is welded around the periphery of the compression springs 41 with a protection barrel 311, the protection barrel 311 is used for providing lateral support for the compression springs 41, and the phenomenon of irreversible deformation of the compression springs 41 is reduced.

Referring to fig. 4 and 5, the number of the connecting blocks 42 is equal to the number of the compression springs 41, each connecting block 42 is welded to the end of the compression spring 41 away from the mounting arc plate 31, and the connecting block 42 is in clearance fit with the protective cylinder 311. Fixed arc board 21 is provided with multiunit joint groove 212 in spacing groove 211 inside wall, and installation arc board 31 supports into spacing groove 211 inner chamber after, every connecting block 42 corresponds the butt in each joint groove 212 inner chamber, and operating personnel can press installation arc board 31 for compression spring 41 atress compression offsets with connecting block 42 until a protection section of thick bamboo 311. Next, the operator fixedly connects the mounting arc plate 31 and the fixed arc plate 21 by the positioning bolt 32 to improve the connection strength between the mounting arc plate 31 and the fixed arc plate 21.

Referring to fig. 2 and 3, a fastening member 111 is adhered to the outer edge of the external block 11, and in this embodiment, the fastening member 111 is a rubber pad with flexible texture and large static friction coefficient of the outer surface. The abutting member 111 abuts between the fixed arc plate 21 and the external block 11 to improve the connection tightness between the fixed arc plate 21 and the external block 11.

Referring to fig. 3 and 4, a diameter-changing block 213 is integrally formed on an end wall of one of the fixed arc plates 21 in the length direction, in this embodiment, the diameter-changing block 213 is an ndfeb magnet having a trapezoidal vertical cross section, and the end wall of the diameter-changing block 213 facing the other fixed arc plate 21 is the end with a smaller outer circumference. The end wall of another fixed arc plate 21 length direction is provided with adaptation groove 214, and the internal diameter size of adaptation groove 214 and the peripheral size looks adaptation of trapezoidal piece, and fixed arc plate 21 glues in adaptation groove 214 and has butt plate 215, and butt plate 215 also is neodymium iron boron magnet board.

Referring to fig. 3, after the two fixed arc plates 21 are simultaneously sleeved outside the outer connecting block 11, the diameter-changing block 213 is abutted to the inner cavity of the adapting groove 214, the mutually facing side walls of the diameter-changing block 213 and the abutting plate 215 are abutted and magnetically attracted, and the mutually facing end walls of the two fixed arc plates 21 are abutted.

Referring to fig. 3, each of the fixed arc plates 21 and the external block 11 are provided with a locking assembly 5, and the locking assembly 5 includes an orientation screw 51 and a fastening nut 52. In the present embodiment, the number of the orientation screws 51 may be two. The two directional screw rods 51 are welded on the outer edge of the external block 11 along the horizontal direction, and the two directional screw rods 51 are respectively positioned at two radial ends of the external block 11. One end of the orientation screw 51 away from the circumscribing block 11 penetrates through the fixed arc plate 21 to define the position of the fixed arc plate 21 outside the circumscribing block 11. Then, the operator may screw the fastening nut 52 to the outer edge of the orientation screw 51 so that the fixing arc plate 21 is positioned outside the circumscribed block 11.

Referring to fig. 2, two fixed arc boards 21 and outer joint block 11 are provided with coupling assembling 6 jointly, and coupling assembling 6's quantity can be two sets of, and two sets of coupling assembling 6 are located the radial both ends of outer joint block 11 respectively. Every group coupling assembling 6 includes two extension boards 61 and two sets of connecting pieces 62, extension board 61 and external piece 11 integrated into one piece, two adjacent extension board 61 mutual symmetries, and the length direction end of every fixed arc board 21 all is located between two extension boards 61, and the fixed arc board 21 offsets with the lateral wall of attaching plate orientation each other.

Referring to fig. 2, an operator may fix one of the fixed arc plates 21 by a connecting bolt 621, the connecting member 62 includes a connecting bolt 621 and a connecting nut 622, and a rod body of the connecting bolt 621 may sequentially penetrate through the extending plate 61 located at a higher position, the fixed arc plate 21 and the extending plate 61 located at a lower position. Then, the operator can screw the connecting nut 622 on the outer edge of the rod body of the connecting bolt 621, so that the fixed arc plate 21 is fixed between the two attaching plates, and further the fixed arc plate 21 is stably fixed on the outer edge of the external block 11. The other fixed arc plate 21 is fixed in the same way,

referring to fig. 2 and 3, when the rust removing chains 12 are all required to be removed for maintenance or replacement, an operator can directly remove the fixed arc plates 21 to remove the two sets of the rust removing chains 12 at the same time. And then, the spare fixed arc plate 21 provided with the derusting chain 12 is arranged outside the external connecting block 11, so that the rapid installation of the derusting chain 12 is realized, and the operation convenience of operators is improved. The new derusting chain 12 is small in abrasion, the friction strength of the inner side of the steel pipe is guaranteed, further more rust on the inner side of the steel pipe can be efficiently removed within the same polishing time, and the derusting efficiency of the derusting chain 12 on the inner side of the steel pipe is guaranteed.

The implementation principle of the steel pipe inner wall rust removal cleaning machine in the embodiment of the application is as follows: when the rust removing chain 12 is used for a long time and one of the rust removing chains needs to be disassembled and maintained and replaced, an operator can screw the positioning bolt 32 to enable the installation arc plate 31 to be separated from the limiting groove 211 so as to rapidly disassemble the old rust removing chain 12.

Then, the end of the new rust removing chain 12 with the installation arc plate 31 is abutted into the limiting groove 211, so that the connecting block 42 is abutted into the inner cavity of the clamping groove 212. The installation arc plate 31 is pressed to compress the compression spring 41 until the end wall of the protection cylinder 311 in the length direction abuts against the outer side wall of the connecting block 42, at the moment, the installation arc plate 31 abuts against the inner cavity of the limiting groove 211, and an operator fixedly connects the installation arc plate 31 and the fixed arc plate 21 through the positioning bolt 32 to complete the renewal of the rust removing chain 12.

When two or more rust removing chains 12 need to be replaced, an operator can first screw the connecting nut 622 to separate the rod body of the connecting bolt 621, and then sequentially draw the rod body of the connecting bolt 621 away from the extension plate 61 and the fixed arc plate 21. Next, the fastening nut 52 is screwed to disengage from the orientation screw 51, and the fixed arc plate 21 is pulled in the opposite direction by the pull cord, so that the diameter-variable block 213 and the abutting plate 215 are separated from each other. When the diameter-changing block 213 is separated from the limiting groove 211, the fixed arc plate 21 is separated from the directional screw rod 51, so as to complete the disassembly. An operator can install a new fixed arc plate 21 pre-installed with the rust removing chain 12 outside the positioning block so as to complete replacement of a plurality of rust removing chains 12, and further guarantee the rust removing efficiency of the rust removing chains 12 on the inner wall of the steel pipe.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.