A steel pipe internal and external rust removal device

Abstract

The present invention relates to the technical field of steel pipe internal and external rust removal, and in particular to a steel pipe internal and external rust removal device, comprising a fixed frame and a pipe body, and also comprising a grinding cylinder, a grinding assembly and an adjustment assembly, wherein the grinding assembly comprises a fixed block and a mounting block, wherein a first grinding block for grinding the outer wall of the pipe body is arranged on a side of the fixed block close to the mounting block, and a second grinding block for grinding the inner wall of the pipe body is arranged on a side of the mounting block close to the fixed block, and the adjustment assembly comprises a slider arranged on the outer wall of the mounting block, wherein an electromagnetic block is arranged on the inner wall of the slider, and a strong magnetic block is arranged on a side of the second grinding block close to the electromagnetic block. The present invention generates a repulsive force on the strong magnetic block by utilizing the electromagnetic block, so that the second grinding block slides, and the amount of power supplied to the electromagnetic block is adjusted in real time according to the actual situation of the inner wall of the pipe body, thereby adjusting the grinding force of the second grinding block, reducing unnecessary power consumption, and preventing potential damage to the inner wall of the pipe body due to excessive grinding, thereby ensuring the high efficiency of the grinding work.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe internal and external rust removal, and in particular to a steel pipe internal and external rust removal device. Background Art

[0002] During the processing, storage or use of steel pipes, corrosion products such as rust and scale may be generated on the surface. These corrosion products not only affect the appearance of the steel pipe, but also reduce the corrosion resistance of the steel pipe and shorten the service life of the steel pipe. Therefore, rust removal is required inside and outside the steel pipe. Through rust removal, rust, scale and other impurities on the inner and outer surfaces of the steel pipe can be removed, the original color of the steel pipe surface can be restored, the smoothness and corrosion resistance of the steel pipe can be enhanced, and the further development of rust can be effectively prevented.

[0003] The invention patent with publication number CN109732458B discloses a device for removing rust from the inner and outer surfaces of steel pipes, including a bracket, on which a loading assembly, a first rust removal assembly and a second rust removal assembly are arranged in sequence from bottom to top in the vertical direction of the bracket; the first rust removal assembly includes a first crossbeam, a first slide rail and a first slide seat, the first slide seat is driven by a first cylinder, a first support plate is fixedly connected to the first slide seat, and a first rust removal unit is arranged on the first support plate; the second rust removal assembly includes a positioning assembly and a second rust removal unit, and the positioning assembly and the second rust removal unit are arranged in parallel on the bracket. The invention automatically loads materials, the equipment occupies a small area and has high rust removal efficiency.

[0004] Although the above patent has certain beneficial effects, the rust conditions of the inner and outer walls of the steel pipe are different. The inner wall of the steel pipe often causes a thicker rust layer due to contact with the transported materials, while the outer wall of the steel pipe produces multiple rust spots due to contact with the air. Therefore, when removing the rust from the steel pipe, it is necessary to treat the inner and outer walls differently and grind the inner and outer walls separately, which has low grinding efficiency. In addition, when grinding the inner wall of the pipe body, the grinding force of the grinding component is insufficient, and the rust layer and impurities on the inner wall cannot be completely removed, resulting in substandard internal quality of the pipeline, affecting the service life of the pipeline and the transmission efficiency of the fluid. The rust layer gradually decreases, and the grinding component continues to maintain the maximum force, which will lead to excessive grinding, which not only increases the wear of the equipment, but also causes unnecessary damage to the inner wall of the pipeline. At the same time, excessive grinding will also make the pipeline wall thinner and reduce its pressure resistance, thereby increasing the risk of accidents such as pipeline leakage, making the equipment less practical. Summary of the invention

[0005] The purpose of the present invention is to solve the problem of poor practicability of rust removal equipment in the prior art, and to propose a steel pipe internal and external rust removal equipment.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a steel pipe internal and external rust removal device, including a fixing frame and a pipe body, and also including:

[0007] A grinding cylinder, the top of the fixed frame is rotatably connected with a cover shell, the grinding cylinder is fixedly installed on the top of the cover shell, the bottom of the fixed frame is provided with a driving assembly for driving the cover shell and the grinding cylinder to rotate, and the driving assembly is provided with a torque sensor;

[0008] A grinding assembly, the grinding assembly comprising a fixed block and a mounting block, the fixed block is fixedly mounted on the top of the grinding cylinder, the fixed block is annular, the mounting block is fixedly mounted on the top of the grinding cylinder, the mounting block is cylindrical, and the mounting block is located at the center of the fixed block, a first grinding block for grinding the outer wall of the tube body is arranged on one side of the fixed block close to the mounting block, and a second grinding block for grinding the inner wall of the tube body is arranged on one side of the mounting block close to the fixed block;

[0009] An adjustment component is used to adjust the position of the second grinding block. The adjustment component includes a slider arranged on the outer wall of the mounting block. The second grinding block is slidably connected to the slider. An electromagnetic block is arranged on the inner wall of the slider. A strong magnetic block is arranged on the side of the second grinding block close to the electromagnetic block. The electromagnetic block has the same magnetic properties as the strong magnetic block when it is energized.

[0010] Preferably, a support frame is fixedly mounted on the top of the fixed frame, and the support frame is rotatably connected to the grinding cylinder.

[0011] Preferably, the driving assembly comprises a motor fixedly mounted on the bottom of a fixing frame, a rotating shaft of the motor is fixedly connected to a cover shell, and the torque sensor is fixedly mounted on a side wall of the rotating shaft of the motor.

[0012] Preferably, a first hydraulic groove is provided inside the fixed block, the first hydraulic groove is filled with hydraulic oil, and the first grinding block is slidably connected to the first hydraulic groove.

[0013] Preferably, a communication groove is provided inside the grinding cylinder, and the communication groove is communicated with the first hydraulic groove.

[0014] Preferably, a second hydraulic groove is provided inside the mounting block, the second hydraulic groove is filled with hydraulic oil, the sliding block is slidably connected to the second hydraulic groove, and the second hydraulic groove is connected to the communicating groove.

[0015] Preferably, a delivery component for delivering hydraulic oil to the first hydraulic tank and the second hydraulic tank is provided inside the cover shell, and the delivery component includes a storage tank fixedly installed inside the cover shell, and a delivery pump is fixedly installed inside the cover shell through a connecting block, and the delivery pump is connected to the storage tank, and the delivery pump is fixedly connected to the connecting tank by a delivery pipe.

[0016] Preferably, a cleaning plate is slidably connected to the side wall of the mounting block, the cleaning plate and the slider are fixedly connected with a connecting piece, and one end of the connecting piece connected to the cleaning plate is sealingly slidably connected to the mounting block.

[0017] Preferably, two cleaning blocks are fixedly mounted on one side of the first grinding block close to the tube body, and the two cleaning blocks are symmetrically distributed on the side wall of the first grinding block.

[0018] Preferably, the side wall of the grinding cylinder is provided with an inspection port, and the inspection port is used to remove impurities generated during the grinding process inside the grinding cylinder.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. The present invention installs a strong magnetic block, an electromagnetic block, a slider and other devices. After the electromagnetic block is energized, a repulsive force is generated on the strong magnetic block, causing the second grinding block to slide. A torque sensor is provided on the side wall of the motor shaft. The second grinding block will encounter greater resistance when encountering a rust layer or other debris. The torque sensor monitors an increase in torque, increases the amount of power supplied to the electromagnetic block, and causes the slider to push the second grinding block to grind the inner wall of the pipe body more vigorously, ensuring that the rust layer is effectively removed. The rust layer is completely polished off, the resistance encountered by the second grinding block is reduced, the torque monitored by the torque sensor is reduced, and the amount of power supplied to the electromagnetic block is reduced, causing the second grinding block to slide toward the inside of the slider, reducing unnecessary force consumption and preventing potential damage to the inner wall of the pipe body due to excessive polishing. The grinding force is adjusted in real time according to the actual situation of the inner wall of the pipe body, thereby ensuring the continuity and efficiency of the grinding work, removing the rust layer more quickly, reducing the grinding time, and improving work efficiency.

[0021] 2. The present invention installs a first grinding block, a second grinding block, a delivery pump and other devices. The delivery pump delivers the hydraulic oil in the storage tank to the first hydraulic groove and the second hydraulic groove, so that the first grinding block slides out of the first hydraulic groove and contacts the outer wall of the pipe body, and the second grinding block slides out of the second hydraulic groove and contacts the inner wall of the pipe body. The motor is started to rotate the grinding cylinder. Through the separate grinding of the first grinding block and the second grinding block, the device can remove rust from steel pipes of different diameters and thicknesses, thereby improving the use range of the device. At the same time, the inner wall and outer wall of the pipe body are ground, thereby improving the grinding efficiency.

[0022] 3. The present invention installs devices such as cleaning blocks, cleaning plates and inspection ports, and utilizes the cleaning blocks to clean the outer wall of the pipe body, remove stains, dust, etc. on the outer wall of the pipe body, and make the outer wall of the pipe body smoother, thereby reducing the difficulty of grinding by the first grinding block, so that the preliminary cleaning and grinding of the outer wall of the pipe body can be carried out simultaneously, thereby saving the steps of cleaning first and then grinding, and improving the overall work efficiency. The pre-cleaning effect of the cleaning block reduces the direct contact between the first grinding block and stains and dust, and reduces the risk of over-grinding the outer wall of the pipe body, thereby extending its service life and reducing the frequency of replacement and maintenance. After the rust removal of the pipe body is completed, the first grinding block and the second grinding block are separated from the inner and outer walls of the pipe body, and the slider pushes the connecting piece under the action of negative pressure, so that the cleaning plate contacts the inner wall of the pipe body, and the cleaning plate cleans the inner wall of the pipe body, effectively removing rust and other impurities that may remain during the grinding process, and the rust removal and cleaning processes are carried out continuously without waiting or interruption, thereby improving the overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of the overall structure of a steel pipe internal and external rust removal device.

[0024] Figure 2 This is a schematic structural diagram of a grinding cylinder and a cover shell portion of a steel pipe internal and external rust removal device proposed by the present invention.

[0025] Figure 3 This is a schematic diagram of the half-section axonometric structure of a grinding cylinder and a cover shell of a steel pipe internal and external rust removal device proposed by the present invention.

[0026] Figure 4 This is a schematic diagram of the half-section axonometric structure of a cover shell and a connecting block of a steel pipe internal and external rust removal device proposed by the present invention.

[0027] Figure 5 This is a schematic diagram of the half-section axonometric structure of a fixed block of a steel pipe internal and external rust removal device proposed by the present invention.

[0028] Figure 6 This is a schematic diagram of the half-section axial structure of a mounting block of a steel pipe internal and external rust removal device proposed by the present invention.

[0029] Figure 7 This is a schematic diagram of the cross-sectional axonometric structure of a grinding cylinder of a steel pipe internal and external rust removal device proposed by the present invention.

[0030] Figure 8 The present invention provides a schematic structural diagram of a slider and a connector portion of a steel pipe internal and external rust removal device.

[0031] Fig. 9 This is a schematic diagram of the half-section axonometric structure of a slider and a second grinding block of a steel pipe internal and external rust removal device proposed by the present invention.

[0032] Fig.10 This is a schematic diagram of the cross-sectional axonometric structure of a fixing block and a mounting block of a steel pipe internal and external rust removal device proposed by the present invention.

[0033] In the figure: 1 fixed frame, 11 supporting frame, 12 pipe body, 2 grinding cylinder, 21 inspection port, 22 motor, 23 connecting groove, 24 cover shell, 25 delivery pump, 26 connecting block, 27 storage tank, 3 fixed block, 31 first hydraulic groove, 32 first grinding block, 33 cleaning block, 4 mounting block, 41 second hydraulic groove, 42 slider, 43 second grinding block, 44 connecting piece, 45 cleaning plate, 46 strong magnetic block, 47 electromagnetic block. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figures 1 to 10A steel pipe internal and external rust removal device comprises a fixed frame 1, a support frame 11 is fixedly installed on the top of the fixed frame 1, a cover shell 24 is rotatably connected to the top of the fixed frame 1, the cover shell 24 is located at the top center of the fixed frame 1, a grinding cylinder 2 is fixedly installed on the top of the cover shell 24, a pipe body 12 is gradually fed into the grinding cylinder 2 through an external device, such as a manipulator or a hydraulic cylinder, the grinding cylinder 2 is rotatably connected to the support frame 11, a motor 22 is fixedly installed on the bottom of the fixed frame 1, the rotating shaft of the motor 22 is fixedly connected to the cover shell 24, after the motor 22 is started, the cover shell 24 and the grinding cylinder 2 rotate simultaneously with the rotating shaft of the motor 22, the pipe body 12 gradually enters the grinding cylinder 2 for grinding, a circular ring-shaped fixed block 3 is fixedly installed on the top of the grinding cylinder 2, and the top of the grinding cylinder 2 is fixed A cylindrical mounting block 4 is fixedly installed, and the mounting block 4 is located at the center of the fixed block 3. A connecting groove 23 is arranged inside the grinding cylinder 2, and the connecting groove 23 is filled with hydraulic oil. A storage tank 27 is fixedly installed inside the cover 24, and the storage tank 27 is used to store hydraulic oil. A delivery pump 25 is fixedly installed inside the cover 24 through a connecting block 26, and the delivery pump 25 is connected with the storage tank 27. A first hydraulic groove 31 is provided inside the fixed block 3, and a second hydraulic groove 41 is provided inside the mounting block 4. The first hydraulic groove 31 and the second hydraulic groove 41 are respectively filled with hydraulic oil. The first hydraulic groove 31 and the second hydraulic groove 41 are both connected with the connecting groove 23, and the connecting groove 23 is fixedly connected with the delivery pump 25 by a delivery pipe. After the delivery pump 25 is started, the connecting groove 2 3, the hydraulic oil in the connecting groove 23 continuously enters the first hydraulic groove 31 and the second hydraulic groove 41, so that the pressure in the first hydraulic groove 31 and the second hydraulic groove 41 increases, the first hydraulic groove 31 is slidably connected to the first grinding block 32, the first grinding block 32 is arc-shaped, the second hydraulic groove 41 is slidably connected to the slider 42, the slider 42 is slidably connected to the side away from the mounting block 4 with the second grinding block 43, the second grinding block 43 is arc-shaped, the pressure in the first hydraulic groove 31 increases, so that the first grinding block 32 slides toward the tube body 12 and contacts the outer wall of the tube body 12, the pressure in the second hydraulic groove 41 increases, so that the slider 42 drives the second grinding block 43 to approach the tube body 12 and contact the inner wall of the tube body 12, and the tube body 12 slowly moves downward. During the process, the first grinding block 32 and the second grinding block 43 grind the inner wall and the outer wall of the tube body 12 at the same time, and the first grinding block 32 and the second grinding block 43 are pushed out from the hydraulic groove by the hydraulic principle, ensuring that the grinding blocks can accurately and evenly contact with the tube body 12, thereby improving the efficiency and effect of rust removal. By adjusting the delivery amount and pressure of the hydraulic oil, the extension amount and the force of the grinding blocks can be controlled to adapt to tube bodies 12 of different sizes and shapes and achieve comprehensive rust removal. The entire rust removal process can be automated by controlling the delivery of the hydraulic oil and the movement of the tube body 12, which simplifies the operation process and reduces the difficulty of operation. By evenly grinding the inner and outer walls of the tube body 12, rust and dirt are effectively removed, and the surface smoothness of the tube body 12 is restored.Thereby, the service life of the tube body 12 is prolonged.

[0036] An electromagnetic block 47 is fixedly installed on the inner wall of the slider 42, and a strong magnetic block 46 is fixedly installed on the side of the second grinding block 43 close to the electromagnetic block 47. After the electromagnetic block 47 is energized, the magnetism is the same as that of the strong magnetic block 46. The electromagnetic block 47 generates a repulsive force on the strong magnetic block 46. After the strong magnetic block 46 is repelled, it pushes the second grinding block 43 to slide. A torque sensor is set on the side wall of the rotating shaft of the motor 22. The torque sensor transmits the monitored data to the controller (the torque sensor and the controller are not shown in the figure). The controller adjusts the amount of power supplied to the electromagnetic block 47 according to the received data. When the second grinding block 43 grinds the inner wall of the tube body 12, it will encounter greater resistance when encountering a rust layer or other debris. The torque sensor on the rotating shaft of the motor 22 detects an increase in torque. According to this monitored torque change, the controller automatically adjusts the amount of power supplied to the electromagnetic block 47. When the torque increases, the controller increases the amount of power supplied to the electromagnetic block 47 to strengthen the repulsive force of the electromagnetic block 47 on the strong magnetic block 46, thereby The second grinding block 43 is pushed to grind the inner wall of the pipe body 12 more vigorously to ensure that the rust layer is effectively removed. When the rust layer is completely polished off, the resistance encountered by the second grinding block 43 is reduced, and the torque monitored by the torque sensor also decreases accordingly. At this time, the controller will automatically reduce the amount of power supplied to the electromagnetic block 47, so that the second grinding block 43 slides along the inner wall of the slider 42 toward the mounting block 4, reducing unnecessary force consumption and preventing potential damage to the inner wall of the pipe body 12 due to excessive grinding. Due to the automatic adjustment characteristics of this design, it can adjust the grinding force in real time according to the actual situation of the inner wall of the pipe body 12, thereby ensuring the continuity and efficiency of the grinding work. Compared with the traditional fixed grinding force, this design can remove the rust layer faster, reduce the grinding time, and improve work efficiency. At the same time, since excessive grinding can be avoided, equipment wear and maintenance costs are also reduced, further improving work efficiency and economy.

[0037] Two cleaning blocks 33 are fixedly installed on one side of the first grinding block 32 close to the tube body 12, and the two cleaning blocks 33 are symmetrically distributed on the side wall of the first grinding block 32. When the first grinding block 32 grinds the outer wall of the tube body 12, since the outer wall of the tube body 12 is usually lightly rusted, or has surface stains, dust, etc., the outer wall of the tube body 12 can be cleaned by the cleaning block 33 to remove these stains and dust, making the outer wall smoother, thereby reducing the grinding difficulty of the first grinding block 32, and at the same time, the preliminary cleaning and grinding of the outer wall of the tube body 12 can be carried out at the same time, thereby saving the steps of cleaning first and then grinding, and improving the overall work efficiency. The pre-cleaning effect of the cleaning block 33 reduces the direct contact between the first grinding block 32 and the stains and dust, thereby reducing the risk of over-grinding of the outer wall of the tube body 12. By reducing the grinding difficulty and reducing over-grinding, the wear of the first grinding block 32 is reduced, thereby extending its service life and reducing the frequency of replacement and maintenance.

[0038] The slider 42 is fixedly connected to the cleaning plate 45 through the connecting piece 44. The cleaning plate 45 is slidably connected to the mounting block 4. One end of the connecting piece 44 connected to the cleaning plate 45 is sealed and slidably connected to the mounting block 4. The hydraulic oil in the connecting groove 23 enters the second hydraulic groove 41. The hydraulic oil contacts the slider 42 but not the cleaning plate 45. Therefore, when the pressure in the second hydraulic groove 41 increases, the slider 42 slides out of the mounting block 4. The cleaning plate 45 is not affected by the internal pressure of the second hydraulic groove 41. When the inner and outer walls of the tube body 12 are rust-free, the delivery pump 25 is started to pump out the hydraulic oil in the grinding cylinder 2, and the first grinding block 32 and the second grinding block 43 are separated from the inner and outer walls of the tube body 12. Under the action of negative pressure, the slider 42 slides from outside to inside along the inner wall of the mounting block 4, so that the connecting piece 44 is pushed by the force of the slider 42 to push the cleaning plate 45 to slide toward the inner wall of the tube body 12, and the cleaning plate 45 contacts the inner wall of the tube body 12. During the removal of the tube body 12, the cleaning plate 45 cleans the inner wall of the tube body 12, effectively removing rust and other impurities that may remain during the grinding process. The rust removal and cleaning process are carried out continuously without waiting or interruption, thereby improving the overall work efficiency. The outer wall of the grinding cylinder 2 is provided with an inspection port 21. After the tube body 12 is taken out from the inside of the grinding cylinder 2, the grinding debris is taken out through the inspection port 21 to avoid the accumulation of debris causing the rust removal effect to be weakened.

[0039] In the present invention, when it is necessary to remove rust from the tube body 12, the tube body 12 is vertically placed in the upper end of the grinding cylinder 2, and then the tube body 12 is gradually sent into the grinding cylinder 2 by a manipulator or a hydraulic cylinder. After the tube body 12 enters the interior of the grinding cylinder 2, the controller is turned on to start the delivery pump 25, and the hydraulic oil in the storage tank 27 is extracted by the delivery pump 25, and then the delivery pump 25 pumps the extracted hydraulic oil into the connecting groove 23 opened in the grinding cylinder 2. At this time, the internal pressure of the connecting groove 23 increases, and then the hydraulic oil in the connecting groove 23 enters the first hydraulic groove 31 opened in the fixing block 3 and the second hydraulic groove 41 opened in the mounting block 4 respectively. When the hydraulic oil enters the first hydraulic groove 31, the internal pressure of the first hydraulic groove 31 increases, and then the hydraulic oil in the first hydraulic groove 31 generates a thrust on the first grinding block 32, so that the first grinding block 32 slides from the outside to the inside along the inner wall of the first hydraulic groove 31 until the end of the first grinding block 32 is aligned with the outer wall of the tube body 12. When the first grinding block 32 and the second grinding block 43 contact the inner wall of the tube body 12 respectively, the motor 22 is started, and the motor 22 drives the cover shell 24 to rotate through the rotating shaft. The rotation of the cover shell 24 drives the grinding cylinder 2 to move synchronously, so that the grinding cylinder 2 drives the first grinding block 32 and the second grinding block 43 to rotate through the fixing block 3 and the mounting block 4 respectively, so that the first grinding block 32 and the second grinding block 43 rotate to remove rust on the inner and outer walls of the tube body 12. Through the respective grinding of the first grinding block 32 and the second grinding block 43, the device can remove rust on steel pipes of different diameters and thicknesses, thereby improving the scope of use of the device.

[0040] When the second grinding block 43 is grinding the inner wall of the tube body 12, since the electromagnetic block 47 is fixedly installed inside the slider 42, the electromagnetic block 47 is energized when the second grinding block 43 is working, and the magnetic poles of the electromagnetic block 47 and the strong magnetic block 46 are made the same. At this time, the strong magnetic block 46 will generate thrust on the second grinding block 43, so that the second grinding block 43 drives the electromagnetic block 47 to move to the front end of the slider 42. Since the second grinding block 43 will generate resistance with the inner wall of the tube body 12 during the grinding process, the torque sensor fixedly installed on the rotating shaft of the motor 22 will feel the increase of torque. When the second grinding block 43 completes the grinding of the rust layer on the inner wall of the tube body 12, the torque felt by the torque sensor becomes smaller. At this time, the torque sensor The sensor will transmit a signal to the controller, and the controller will reduce the amount of power supplied to the electromagnetic block 47, thereby reducing the thrust of the electromagnetic block 47 on the strong magnetic block 46 and the second grinding block 43. At this time, under the action of the friction force of the inner wall of the tube body 12, the second grinding block 43 will drive the strong magnetic block 46 to slide along the inner wall of the slider 42 from the outside to the inside, thereby reducing the grinding amplitude of the inner wall of the tube body 12 by the second grinding block 43, so that after the second grinding block 43 removes the rust layer on the inner wall of the tube body 12, it will not continue to grind the inner wall of the tube body 12, so as to avoid the tube body 12 from entering the grinding cylinder 2 and causing excessive grinding due to the grinding frequency of the second grinding block 43 not matching, and to avoid excessive grinding of the inner wall of the tube body 12 affecting subsequent use. When the first grinding block 32 grinds the outer wall of the tube body 12 , since the outer wall of the tube body 12 is often less corroded, during the grinding process of the first grinding block 32 , the outer wall of the tube body 12 is cleaned by the cleaning block 33 , which can reduce the grinding difficulty of the first grinding block 32 and reduce excessive grinding of the outer wall of the tube body 12 .

[0041] When the rust removal of the inner and outer walls of the tube body 12 is completed, the delivery pump 25 is started to pump out the hydraulic oil inside the grinding cylinder 2. At this time, the internal pressure of the grinding cylinder 2 is reduced, so that the first grinding block 32 and the second grinding block 43 are separated from the inner and outer walls of the tube body 12. When the slider 42 slides from the outside to the inside along the inner wall of the mounting block 4 under the action of negative pressure, the cleaning plate 45 will be driven to move synchronously through the connecting piece 44. When the slider 42 contacts the inner wall of the mounting block 4, the cleaning plate 45 will be driven to contact the inner wall of the tube body 12 through the connecting piece 44. At this time, when the polished tube body 12 is taken out, the inner wall of the tube body 12 will be cleaned by the cleaning plate 45, thereby improving the subsequent rust prevention ability of the tube body 12. When the tube body 12 is taken out from the inside of the grinding cylinder 2, the grinding debris can be taken out through the inspection port 21 to avoid the accumulation of debris causing the rust removal effect to be weakened.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel pipe internal and external rust removal device, comprising a fixing frame (1) and a pipe body (12), characterized in that: Also includes: A grinding cylinder (2), wherein the top of the fixing frame (1) is rotatably connected to a cover shell (24), the grinding cylinder (2) is fixedly mounted on the top of the cover shell (24), and the bottom of the fixing frame (1) is provided with a driving assembly for driving the cover shell (24) and the grinding cylinder (2) to rotate, and a torque sensor is provided on the driving assembly; A grinding assembly, the grinding assembly comprising a fixed block (3) and a mounting block (4), the fixed block (3) being fixedly mounted on the top of a grinding cylinder (2), the fixed block (3) being annular, the mounting block (4) being fixedly mounted on the top of the grinding cylinder (2), the mounting block (4) being cylindrical, and the mounting block (4) being located at the center of the fixed block (3), a first grinding block (32) for grinding the outer wall of a tube body (12) being arranged on a side of the fixed block (3) close to the mounting block (4), and a second grinding block (43) for grinding the inner wall of the tube body (12) being arranged on a side of the mounting block (4) close to the fixed block (3); an adjustment component, the adjustment component being used to adjust the position of the second grinding block (43), the adjustment component comprising a slider (42) arranged on the outer wall of the mounting block (4), the second grinding block (43) being slidably connected to the slider (42), an electromagnetic block (47) being arranged on the inner wall of the slider (42), a strong magnetic block (46) being arranged on a side of the second grinding block (43) close to the electromagnetic block (47), and the electromagnetic block (47) having the same magnetic properties as the strong magnetic block (46) when energized; A first hydraulic groove (31) is provided inside the fixed block (3), the first hydraulic groove (31) is filled with hydraulic oil, and the first grinding block (32) is slidably connected to the first hydraulic groove (31); A communication groove (23) is provided inside the grinding cylinder (2), and the communication groove (23) is connected to the first hydraulic groove (31); A second hydraulic groove (41) is provided inside the mounting block (4), the second hydraulic groove (41) is filled with hydraulic oil, the sliding block (42) is slidably connected to the second hydraulic groove (41), and the second hydraulic groove (41) is connected to the connecting groove (23); A delivery assembly for delivering hydraulic oil to the first hydraulic groove (31) and the second hydraulic groove (41) is arranged inside the housing (24), the delivery assembly comprising a storage tank (27) fixedly mounted inside the housing (24), a delivery pump (25) fixedly mounted inside the housing (24) via a connecting block (26), the delivery pump (25) being in communication with the storage tank (27), and a delivery pipe being fixedly connected between the delivery pump (25) and the communication groove (23); A cleaning plate (45) is slidably connected to the side wall of the mounting block (4), the cleaning plate (45) and the slider (42) are fixedly connected with a connecting piece (44), and one end of the connecting piece (44) connected to the cleaning plate (45) is sealed and slidably connected to the mounting block (4).

2. The steel pipe internal and external rust removal equipment according to claim 1, characterized in that: A support frame (11) is fixedly mounted on the top of the fixed frame (1), and the support frame (11) is rotatably connected to the grinding cylinder (2).

3. The steel pipe internal and external rust removal equipment according to claim 1, characterized in that: The drive assembly comprises a motor (22) fixedly mounted on the bottom of a fixing frame (1); a rotating shaft of the motor (22) is fixedly connected to a cover (24); and the torque sensor is fixedly mounted on a side wall of the rotating shaft of the motor (22).

4. The steel pipe internal and external rust removal equipment according to claim 1, characterized in that: Two cleaning blocks (33) are fixedly mounted on one side of the first grinding block (32) close to the tube body (12), and the two cleaning blocks (33) are symmetrically distributed on the side wall of the first grinding block (32).

5. The steel pipe internal and external rust removal equipment according to claim 1, characterized in that: The side wall of the grinding cylinder (2) is provided with an inspection opening (21), and the inspection opening (21) is used to remove impurities generated during the grinding process inside the grinding cylinder (2).

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