Fixing device for rust removal from outer wall of pipe

Abstract

A fixing device for rust removal from the outer wall of a pipe, the fixing device comprising: a storage assembly (100), which comprises a storage housing (101), wherein a knob (102) is inserted into one end of the storage housing (101), an unlocking slot (101a) is formed in the other end of the storage housing (101), and a pressing member (103) is arranged in the unlocking slot (101a); a support assembly (200), which comprises a fixed ring (201) and a movable ring (202) that are arranged in the storage housing (101), wherein the fixed ring (201) and the movable ring (202) are stacked; and a holding assembly (300), which comprises adjustment members (301) arranged on the fixed ring (201) and the movable ring (202), wherein the adjustment members (301) are movably connected to friction members (302). The fixing device is sleeved on the outer wall of a pipe by means of the support assembly (200), and all the friction members (302) can be synchronously adjusted, thereby enabling the friction members (302) to closely fit onto the outer wall of the pipe; and rust-removal grinding of the pipe is completed by means of the friction members (302).

Description

A fixing device for rust removal on the outer wall of a pipe Technical Field

[0001] This invention relates to the field of pipeline maintenance, and in particular to a fixing device for removing rust from the outer wall of a pipeline. Background Technology

[0002] Metal pipes placed in the open environment for a long time are prone to rust on the outer wall. The rust layer not only affects the appearance of the pipe, but the spongy rust also absorbs more moisture, accelerating the corrosion process and reducing the strength and safety of the pipe. Therefore, it is necessary to remove the rust from the outer wall before use. Rust removal from the outer wall of the pipe is an important step in maintaining the integrity of the pipeline facilities and extending their service life.

[0003] Traditional rust removal methods include chemical rust removal and blasting. Chemical rust removal uses strong acids to react with rust and metal oxides to produce soluble salts, thus removing rust. However, this method may cause hydrogen embrittlement, affecting the mechanical properties of the metal, and it also has a corrosive effect on the environment and equipment, so it is generally not used. Blasting uses abrasive particles to impact the metal surface to remove rust, which also pollutes the environment. Traditional rust removal methods have significant drawbacks.

[0004] Conventional pipe rust removal devices are complex in structure, large in size, and occupy a large area, making them difficult to move and reposition. Therefore, the pipes to be rusted must be disassembled and fixed to the rust removal device, which not only increases labor costs but also adds the steps of disassembling and assembling the pipes, thus increasing time costs and greatly delaying the rust removal process.

[0005] Summary of the Invention

[0006] Given that the existing pipe rust removal devices have a complex overall structure, occupy a large area, and require additional steps to disassemble and assemble the pipes during the rust removal process, resulting in increased labor and time costs and delays in the rust removal progress, this invention is proposed.

[0007] Therefore, the technical problem to be solved by the present invention is how to achieve rapid installation of rust removal device and improve the efficiency of pipeline rust removal.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fixing device for removing rust from the outer wall of a pipe, comprising: a storage assembly including a storage shell, one end of which is inserted into a knob, and the other end of which has an unlocking groove, the unlocking groove containing a pressing element; a support assembly including a fixed ring and a movable ring disposed within the storage shell, the fixed ring and the movable ring being stacked; and a clamping assembly including an adjusting element disposed on the fixed ring and the movable ring, the adjusting element being movably connected to a friction element.

[0009] As a kind of preferred scheme of the fixed device for the pipeline outer wall rust removal of the application, wherein: the edge of the receiving shell is provided with a baffle, the side wall of the receiving shell is provided with a track groove, the end of the track groove is provided with a straight groove, the receiving shell is provided with a fixed column, the fixed column is close to the unlocking slot, and the unlocking slot is communicated with the insertion slot.

[0010] As a kind of preferred scheme of the fixed device for the pipeline outer wall rust removal of the application, wherein: the outside of the knob is provided with vertical lines, the knob is fixed with an extension rod, the bottom of the extension rod is symmetrically provided with a positioning slot, and the extension rod is fixed with a driving tooth.

[0011] As a kind of preferred scheme of the fixed device for the pipeline outer wall rust removal of the application, wherein: the pressing piece includes an upper plate, a lower plate and a connecting plate connecting the upper plate and the lower plate, the upper plate is provided with a pressing block, the pressing block extends out of the unlocking slot, the lower plate is provided with an inclined block, the inclined block is inserted into the insertion slot, and the bottom of the upper plate and the lower plate is provided with a spring.

[0012] As a kind of preferred scheme of the fixed device for the pipeline outer wall rust removal of the application, wherein: the surface of the fixed ring is provided with an arc-shaped limiting slot, the arc-shaped limiting slot is provided with a chain, one end of the fixed ring is provided with a fixed hole, the other end of the fixed ring is provided with a first recess, the first recess is provided with a locking hole, and the locking hole is provided with a locking spring.

[0013] As a kind of preferred scheme of the fixed device for the pipeline outer wall rust removal of the application, wherein: the surface of the movable ring is also provided with an arc-shaped limiting slot, the arc-shaped limiting slot is provided with a chain, one end of the movable ring is provided with a lock block, the lock block is provided with a groove, the other end of the movable ring is provided with a second recess, the second recess is inserted with a driven tooth, the bottom of the driven tooth is provided with a sleeve, the inner wall of the sleeve is symmetrically provided with a clamping column, and the outer wall of the movable ring is provided with a sliding block.

[0014] As a kind of preferred scheme of the fixed device for the pipeline outer wall rust removal of the application, wherein: the locking hole is provided with a synchronous ring, the inner wall of the synchronous ring is symmetrically provided with a locking slot, the locking slot is embedded with a latch, and the bottom of the latch is provided with an unlocking spring.

[0015] As a kind of preferred scheme of the fixed device for the pipeline outer wall rust removal of the application, wherein: the fixed ring and the movable ring are both vertically provided with an adjusting hole, a moving slot arranged transversely is provided near the adjusting hole, and the included angle between the two adjusting holes is 120 degrees.

[0016] As a kind of preferred scheme of the fixed device for the pipeline outer wall rust removal of the application, wherein: the adjusting piece includes a chain tooth at the top and a gear at the bottom, and the gear is placed in the adjusting hole.

[0017] As a preferred scheme of the pipe outer wall rust removal fixing device, the friction member comprises a rack and a rust removal plate fixedly connected with the rack, the friction member is inserted into the moving groove, and the rust removal plate is provided with an adjusting spring between the rust removal plate and the rack.

[0018] The pipe outer wall rust removal fixing device has the advantages that the device can be quickly sleeved on the pipe outer wall through the supporting assembly, the installation time is greatly saved, the device is convenient to disassemble and store, all the friction members can be synchronously adjusted, the rust removal of the pipe outer wall can be completed through the rotating device installed outside the device without dismounting the pipe, and the rust removal efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Wherein:

[0021] Fig. 1 is a structural schematic view of a pipe outer wall rust removal fixing device provided by the present application;

[0022] Fig. 2 is a structural schematic view of a pipe outer wall rust removal fixing device storage assembly provided by the present application;

[0023] Fig. 3 is a structural schematic view of a pipe outer wall rust removal fixing device unlocking groove provided by the present application;

[0024] Fig. 4 is a structural schematic view of a pipe outer wall rust removal fixing device fixing ring provided by the present application;

[0025] Fig. 5 is a structural schematic view of a pipe outer wall rust removal fixing device movable ring provided by the present application;

[0026] Fig. 6 is a structural schematic view of a pipe outer wall rust removal fixing device clamping assembly provided by the present application;

[0027] Fig. 7 is a structural schematic view of a pipe outer wall rust removal fixing device in a storage state provided by the present application;

[0028] Fig. 8 is a sectional view of a pipe outer wall rust removal fixing device at A provided by the present application;

[0029] Fig. 9 is a structural schematic view of a pipe outer wall rust removal fixing device in an unfolded state provided by the present application;

[0030] Figure 10 is a schematic view of the cross-sectional structure of the fixing device B for removing rust from the outer wall of the pipeline provided by the application;

[0031] Figure 11 is a schematic view of the cross-sectional structure of the fixing device for removing rust from the outer wall of the pipeline provided by the application in an unfolded state.

[0032] In the figure: the receiving assembly 100, the receiving shell 101, the knob 102, the pressing piece 103, the support assembly 200, the fixed ring 201, the movable ring 202, the clamping assembly 300, the adjusting piece 301, the friction piece 302, the unlocking slot 101a, the blocking strip 101b, the track slot 101c, the straight slot 101c-1, the fixed column 101d, the insertion slot 101e, the vertical lines 102a, the extension rod 102b, the positioning slot 102b-1, the driving teeth 102c, the upper plate 103a, the lower plate 103b, the connecting plate 103c, the pressing block 103a-1, the inclined block 103b-1, the spring 103d, the arc-shaped limiting slot 201a, the chain 201b, the fixed hole 201c, the first recess 201d, the locking hole 201e, the locking spring 201e-1, the locking block 202a, the groove 202a-1, the second recess 202b, the driven teeth 202c, the sleeve 202c-1, the clamping column 202c-2, the sliding block 202d, the synchronization ring 203, the locking slot 203a, the bolt 203b, the unlocking spring 203c, the adjusting hole 204, the moving slot 205, the chain teeth 301a, the gear 301b, the rack 302a, the rust removal plate 302b, the adjusting spring 302c. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0034] Embodiment 1, with reference to Figures 1-9, the present embodiment provides a fixing device for removing rust from the outer wall of the pipeline, which comprises a receiving assembly 100, a receiving shell 101, the receiving shell 101 is inserted into a knob 102 at one end, the receiving shell 101 is provided with an unlocking slot 101a at the other end, and a pressing piece 103 is arranged in the unlocking slot 101a; a support assembly 200, comprising a fixed ring 201 and a movable ring 202 arranged in the receiving shell 101, the fixed ring 201 and the movable ring 202 are stacked; a clamping assembly 300, comprising an adjusting piece 301 arranged on the fixed ring 201 and the movable ring 202, and the adjusting piece 301 is movably connected with a friction piece 302.

[0035] Specifically, the receiving shell 101 can realize the function of containing all components in the device, the receiving shell 101 is slightly larger than the fixed ring 201, and the thickness is twice that of the fixed ring 201, so the fixed ring 201 and the movable ring 202 can be placed in the receiving shell 101 at the same time, which can ensure the fixation of the fixed ring 201, and at the same time make the movable ring 202 freely move in the receiving shell 101.

[0036] Preferably, first, the device is placed outside the pipeline to be derusted, then the movable ring 202 is completely stretched out of the receiving shell 101 and connected with the fixed ring 201, the circular ring composed of the movable ring 202 and the fixed ring 201 is sleeved on the periphery of the pipeline, and three groups of friction pieces 302 are equidistantly arranged on the inner wall of the circular ring, the included angle between adjacent two groups of friction pieces 302 is 120 degrees, finally, the position of the friction piece 302 is changed through the adjusting piece 301, so that the friction piece 302 is tightly attached to the outer wall of the pipeline, and the fixation of the device is completed. Since the outer diameter of the device is fixed, only a rotating mechanism needs to be installed outside the device according to the outer diameter, the rotating mechanism only needs to realize the rotation of the circular ring around the pipeline, and the polishing and derusting of the circular ring to the pipeline can be completed through the friction piece 302.

[0037] Further, through the adjustment of the position of the friction piece 302 by the adjusting piece 301, not only the fixation of the device can be completed, but also the device can be fixed on the pipelines with different diameters, further improving the applicability of the device.

[0038] Through the device, the volume is small when not in use, which is convenient for storage and carrying, and the device can be quickly installed on the pipeline when needed, and can also clamp the pipelines with different diameters, which takes into account the applicability of the device.

[0039] Embodiment 2, referring to FIG. 2-3, is the second embodiment of the present application, which is based on the previous embodiment, and the difference between the two embodiments is that: the receiving shell 101 is provided with a blocking strip 101b at the edge, the side wall of the receiving shell 101 is provided with a track groove 101c, the end of the track groove 101c is provided with a straight groove 101c-1, the receiving shell 101 is provided with a fixed column 101d, the fixed column 101d is close to the unlocking groove 101a, the unlocking groove 101a is communicated with the insertion slot 101e; the outer side of the knob 102 is provided with vertical lines 102a, the knob 102 is fixed with an extension rod 102b, the bottom of the extension rod 102b is symmetrically provided with a positioning groove 102b-1, and the extension rod 102b is fixed with a driving tooth 102c; the pressing piece 103 includes an upper plate 103a, a lower plate 103b and a connecting plate 103c connecting the upper plate 103a and the lower plate 103b, the upper plate 103a is provided with a pressing block 103a-1, the pressing block 103a-1 extends out of the unlocking groove 101a, the lower plate 103b is provided with an inclined block 103b-1, the inclined block 103b-1 is inserted into the insertion slot 101e, and the bottom of the upper plate 103a and the lower plate 103b is provided with a spring 103d.

[0040]

[0040] Specifically, the inward blocking bars 101b on both sides of the receiving shell 101 are used to prevent the movable ring 202 from falling out of the receiving shell 101, and the track groove 101c can plan the movement path of the movable ring 202. Through the cooperation of the blocking bars 101b and the track groove 101c, the movement range of the movable ring 202 can be limited, ensuring that the movable ring 202 can move along the correct path and guarantee the normal work of the device.

[0041] Preferably, the pressing piece 103 can be completely embedded in the unlocking groove 101a, and the pressing piece 103 is in contact with the inner wall of the unlocking groove 101a everywhere. The inclined block 103b-1 extends through the passage of the unlocking groove 101a and the insertion groove 101e. By pressing the pressing block 103a-1, the upper plate 103a can be driven to move downward. Because the pressing piece 103 is made of hard material, the deformation caused by stress is small, so the downward movement of the upper plate 103a can synchronously drive the movement of the lower plate 103b, and the inclined block 103b-1 is pressed back into the unlocking groove 101a. After the pressing block 103a-1 is released, the inclined block 103b-1 is popped out again under the action of the restoring force of the spring 103d.

[0042] Further, the fixed ring 201 is fixed at both ends by the fixed column 101d and the knob 102, respectively, and is prevented from falling from the side through the limitation of the blocking bar 101b.

[0043] By setting the receiving assembly 100, in addition to realizing the basic functions of portability and storage, the fixed ring 201 and the movable ring 202 can also be fixed, further improving the stability of the device.

[0044] The third embodiment of the present application is shown in FIGS. 4-11. The third embodiment provides a fixing device for rust removal of the outer wall of a pipeline. The third embodiment is based on the second embodiment, but differs from the second embodiment in that the surface of the fixed ring 201 is provided with an arc-shaped limiting groove 201a, the arc-shaped limiting groove 201a is provided with a chain 201b, one end of the fixed ring 201 is provided with a fixing hole 201c, the other end of the fixed ring 201 is provided with a first recess 201d, the first recess 201d is provided with a locking hole 201e, the locking hole 201e is provided with a locking spring 201e-1; the surface of the movable ring 202 is also provided with an arc-shaped limiting groove 201a, the arc-shaped limiting groove 201a is provided with a chain 201b, one end of the movable ring 202 is provided with a locking block 202a, the locking block 202a is provided with a groove 202a-1, the other end of the movable ring 202 is provided with a second recess 202b, the second recess 202b is inserted with a driven tooth 202c, the bottom of the driven tooth 202c is provided with a sleeve 202c-1, the inner wall of the sleeve 202c-1 is symmetrically provided with a clamping column 202c-2, the outer wall of the movable ring 202 is provided with a sliding block 202d; the locking hole 201e is provided with a synchronous ring 203, the inner wall of the synchronous ring 203 is symmetrically provided with a locking groove 203a, the locking groove 203a is embedded with a bolt 203b, the bottom of the bolt 203b is provided with an unlocking spring 203c; the fixed ring 201 and the movable ring 202 are both vertically provided with an adjusting hole 204, an adjusting hole 204 is provided with a horizontally arranged moving groove 205, the included angle between the two adjusting holes 204 is 120 degrees; the adjusting member 301 includes a chain tooth 301a at the top and a gear 301b at the bottom, the gear 301b is placed in the adjusting hole 201f; the friction member 302 includes a rack 302a and a rust removal plate 302b fixedly connected with the rack 302a, the friction member 302 is inserted into the moving groove 205, and the rust removal plate 302b and the rack 302a are provided with an adjusting spring 302c.

[0045] Specifically, the sliding block 202d is embedded in the track groove 101c to limit the movement range of the movable ring 202. When the sliding block 202d moves to the end of the track groove 101c and enters the straight groove 101c-1, the first recess 201d on the fixed ring 201 is connected with the second recess of the movable ring 202, and at the same time, the locking block 202a on the movable ring 202 is inserted into the unlocking groove 101a, and the cooperation of the inclined block 103b-1 and the groove 202a-1 completes the fixation of the fixed ring 201.

[0046] Preferably, the vertical lines 102a on the knob 102 can increase the friction, and it is more labor-saving when adjusting the knob 102, and it can prevent slipping when manually adjusting. When the fixed ring 201 is not connected with the movable ring 202, the driving teeth 102c on the knob 102 are engaged with the chain 201b, and a part of the extension rod 102b provided with the positioning groove 102b-1 completely extends out of the locking hole 201e. When the fixed ring 201 is connected with the movable ring 202, the extension rod 102b of the knob 102 passes through the two rings and is inserted into the sleeve 202c-1, and the clamping column 202c-2 on the inner wall of the sleeve 202c-1 is inserted into the positioning groove 102b-1. At this time, the knob 102 can drive the driven teeth 202c to move synchronously by rotating.

[0047] Further, the fixed ring 201 and the movable ring 202 are both provided with the chain 201b arranged along the edge thereof. When the knob 102 is connected with the fixed ring 201, the driving teeth 102c are arranged on the surface of the fixed ring 201 and engaged with the chain 201b, and the sprocket 301a of the adjusting part 301 is also arranged on the surface of the fixed ring 201 and engaged with the chain 201b. Therefore, when the knob 102 is rotated, the rotation of the driving teeth 102c can drive the chain 201b to move along the arc-shaped limiting groove 201a, and the movement of the chain 201b can drive the sprocket 301a engaged with the chain 201b to rotate. At the same time, the rotation of the adjusting part 301 can also drive the driven teeth 202c to rotate synchronously. The driven teeth 202c are also engaged with the chain 201b on the movable ring 202, so that the rotation of the driven teeth 202c can drive the chain on the movable ring 202 to move synchronously, and further drive the sprocket 301a on the movable ring 202 to rotate. Since the driving teeth 102c and the driven teeth 202c have the same shape and rotate at the same speed, and the chains 201b of the two rings are also the same, the rotating speed and direction of the adjusting part 301 on the fixed ring 201 and the movable ring 202 can be consistent.

[0048] Specifically, when the sprocket 301a rotates, it can also drive the gear 301b at the other end of the adjusting part 301 to rotate. Since the gear 301b is engaged with the rack 302a of the friction part 302, the rotation of the gear 301b can drive the friction part 302 to move along the moving groove 205. In particular, the moving groove 205 is directed to the center of the circular ring formed by the fixed ring 201 and the movable ring 202, so that the three groups of friction parts 302 are also directed to the center of the circular ring. When the pipeline in the circular ring is clamped by the friction parts 302, the pressure applied by each group of friction parts 302 can be perpendicular to the outer wall of the pipeline, so that the pipeline can be positioned and the axis of the pipeline can be collinear with the axis of the circular ring, and the force applied to the contact surface of the pipeline can be consistent, thereby avoiding damage to the pipeline or the device itself.

[0049] Preferably, in order to ensure that the adjustment members 301 always move synchronously, the knob 102 cannot be rotated when the fixed ring 201 is not connected with the movable ring 202. When the fixed ring 201 is not connected with the movable ring 202, the synchronization ring 203 extends out of the locking hole 201e, the pins 203b in the synchronization ring 203 extend out and are embedded in the positioning groove 102b-1, the knob 102 is fixed by the symmetrically arranged pins 203b, and the knob 102 is prevented from rotating in the unconnected state to cause the adjustment members 301 to move out of synchronization; when the fixed ring 201 is connected with the movable ring 202, the second recess 202b of the movable ring 202 presses the synchronization ring 203 back into the locking hole 201e, the pins 203b are pressed back into the locking groove 203a through the arc-shaped structure at the end of the positioning groove 102b-1, and the unlocking of the knob 102 is completed.

[0050] When the rust removal is completed, the device needs to be retracted. First, the knob 102 is rotated in the reverse direction, the reverse rotation of the knob 102 drives the driving wheel 102c to rotate, the adjustment members 301 are reversed through the meshed chain 201b, and the friction members 302 move away from the center of the circle in the direction. The rack 302a of the friction member 302 is fully retracted into the moving groove 205, and then the pressing block 103a-1 is pressed, the pressing block 103a-1 moves downward while driving the inclined block 103b-1 to retract into the unlocking groove 101a, the locking block 202a of the movable ring 202 is unlocked after losing the restriction of the inclined block 103b-1, the connection between the fixed ring 201 and the movable ring 202 is disconnected, the synchronization ring 203 pops out to fix the knob 102 again under the action of the locking spring 201e-1, and finally the sliding block 202d moves along the track groove 102c to retract the movable ring 202 into the housing 101.

[0051] Through the cooperation of the supporting assembly 200 and the clamping assembly 300, the knob 102 can only be rotated when the fixed ring 201 is connected with the movable ring 202, the adjustment members 301 on the fixed ring 201 and the movable ring 202 can always move synchronously, the lengths of the friction members 302 can always remain consistent, and the reliability of the clamping pipeline is ensured.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A fixed device for removing rust from the outer wall of a pipe, characterized by: The utility model relates to a kind of lock, including, Accommodate component (100), including accommodation shell (101), one end of the accommodation shell (101) is inserted into knob (102), the other end of the accommodation shell (101) is provided with unlocking slot (101a), presser (103) is equipped in the unlocking slot (101a); Support component (200), including fixed ring (201) and movable ring (202) being arranged in the accommodation shell (101), the fixed ring (201) and the movable ring (202) are placed in layers; Clamping component (300), including adjusting piece (301) being arranged on the fixed ring (201) and the movable ring (202), the adjusting piece (301) and friction piece (302) are movably connected; The edge of the accommodation shell (101) is equipped with baffle (101b), the sidewall of the accommodation shell (101) is equipped with track slot (101c), the end of the track slot (101c) is equipped with straight slot (101c-1), the accommodation shell (101) is equipped with fixed column (101d), the fixed column (101d) is close to the unlocking slot (101a), the unlocking slot (101a) is communicated with insertion slot (101e);The outside of the knob (102) is equipped with vertical line (102a), the knob (102) is fixed with extension rod (102b), the bottom of the extension rod (102b) is symmetrically equipped with positioning slot (102b-1), the extension rod (102b) is fixed with driving tooth (102c); The presser (103) includes upper plate (103a), lower plate (103b) and connecting plate (103c) connecting the upper plate (103a) and the lower plate (103b), the upper plate (103a) is equipped with press block (103a-1), the press block (103a-1) is out of the unlocking slot (101a), the lower plate (103b) is equipped with inclined block (103b-1), the inclined block (103b-1) is inserted into the insertion slot (101e), the bottom of the upper plate (103a) and the lower plate (103b) is equipped with spring (103d); The surface of the fixed ring (201) is equipped with arc limit slot (201a), the arc limit slot (201a) is equipped with chain (201b), one end of the fixed ring (201) is equipped with fixed hole (201c), the other end of the fixed ring (201) is equipped with first recess (201d), the first recess (201d) is equipped with locking hole (201e), the locking hole (201e) is equipped with locking spring (201e-1); The surface of the movable ring (202) is also provided with an arc-shaped limiting groove (201a), a chain (201b) is arranged in the arc-shaped limiting groove (201a), one end of the movable ring (202) is provided with a locking block (202a), the locking block (202a) is provided with a groove (202a-1), the other end of the movable ring (202) is provided with a second recess (202b), a driven tooth (202c) is inserted into the second recess (202b), the bottom of the driven tooth (202c) is provided with a sleeve (202c-1), the inner wall of the sleeve (202c-1) is symmetrically provided with a clamping column (202c-2), and the outer wall of the movable ring (202) is provided with a sliding block (202d).

2. The pipe outer wall rust removing fixing device according to claim 1, characterized in that: The locking hole (201e) is provided with a synchronous ring (203), the inner wall of the synchronous ring (203) is symmetrically provided with a locking groove (203a), the locking groove (203a) is embedded with a bolt (203b), and the bottom of the bolt (203b) is provided with an unlocking spring (203c).

3. The pipe outer wall rust removing fixing device according to claim 2, characterized in that: The fixed ring (201) and the movable ring (202) are both vertically provided with an adjusting hole (204), and a moving groove (205) arranged transversely is arranged near the adjusting hole (204), when the movable ring (202) is in an unfolded state, the included angle between any two adjusting holes (204) is 120 degrees.

4. The pipe outer wall rust removing fixing device according to claim 3, characterized in that: The adjusting part (301) comprises a chain tooth (301a) at the top and a gear (301b) at the bottom, and the gear (301b) is arranged in the adjusting hole (204).

5. The pipe outer wall rust removing fixture according to claim 4, wherein: The friction part (302) comprises a rack (302a) and a rust removal plate (302b) fixedly connected with the rack (302a), the friction part (302) is inserted into the moving groove (205), and an adjusting spring (302c) is arranged between the rust removal plate (302b) and the rack (302a).

Images