Surface machining and grinding device for steel-in-steel directly-buried steam heat preservation bent pipe

Abstract

The invention discloses a surface machining and grinding device for a steel-sleeved-steel directly-buried steam heat preservation elbow, and relates to the technical field of machining of the steel-sleeved-steel directly-buried steam heat preservation elbow, and the surface machining and grinding device comprises a main body assembly, a clamping piece, a limiting piece, a cleaning piece and an auxiliary piece. By arranging the clamping piece and the limiting piece, a worker only pushes the bent pipe to move, grinding paper can grind the bent pipe, and the worker does not need to hold and rotate the bent pipe on the two sides of a machining opening of an operator, place the bottom end of the bent pipe to be ground on a moving plate, clamp the bent pipe through an annular plate and push the moving plate; after grinding, a worker presses the unground end of the bent pipe, so that one end of the bent pipe makes contact with the limiting plate, the bent pipe pushes the limiting plate to move upwards, the limiting plate moves upwards through the moving rod, grinding of the bent pipe is completed, only the worker needs to push the bent pipe in the process, and human intervention is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel-in-steel direct-buried steam thermal insulation elbow processing, in particular to a surface processing and grinding device for a steel-in-steel direct-buried steam thermal insulation elbow. Background Art

[0002] Steel-in-steel direct-buried steam insulated elbow is a high-efficiency insulation pipe used in direct-buried steam pipeline systems. It combines the working steel pipe and the protective steel pipe, and fills the insulation material between the two to achieve the purpose of heat insulation, corrosion resistance and extended service life. When processing the elbow, a grinding device must be used to treat its surface.

[0003] However, the existing technology has the following shortcomings: When the existing grinding device is in use, the bent pipe needs to be inserted into the processing port, and the grinding paper in the processing port grinds the surface of the bent pipe. However, when the bent pipe is being grinded, the staff needs to push the bent pipe. When the bent pipe is ground to the bending position, the staff needs to rotate the bent pipe so that the grinding paper grinds the surface of the bent pipe after bending. In this process, there are many human intervention operations. Therefore, it is necessary to propose a grinding device for auxiliary processing to reduce human intervention. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when using the existing grinding device, the bent pipe needs to be inserted into the processing port, and the grinding paper in the processing port grinds the surface of the bent pipe, but when the bent pipe is being ground, the staff needs to push the bent pipe. When the bent pipe is ground to the bending position, the staff needs to rotate the bent pipe so that the grinding paper grinds the surface of the bent pipe after bending. In this process, there is a lot of human intervention. A surface processing and grinding device for a steel-in-steel direct-buried steam insulation bent pipe is provided.

[0005] To achieve the above object, the present invention provides the following technical solutions: The present invention is a surface processing and grinding device for a steel-jacketed steel-buried steam insulation elbow pipe, comprising: The main body component includes a body, a manipulator and a placement plate; the manipulator is fixed to one side of the top of the body, and the placement plate is located on both sides of the processing port of the manipulator; A clamping member, the clamping member comprises a movable groove and a movable plate; the movable groove is opened in the central inner part of the outer end of the placement plate, and the movable plate is slidably connected to the inner part of the movable groove; A limiting member, the limiting member includes a group of moving rods and connecting rods; the moving rods all penetrate and are slidably connected to the inside of the protruding end of the moving plate on one side, and the connecting rods are slidably connected to the bottom ends of the moving rods; A cleaning member, the cleaning member comprising a movable hole and a sliding block; the movable hole is opened on both sides of the top and bottom ends of the placement plate, and the sliding block is slidably connected inside the movable hole; The auxiliary part comprises a group of card slots; the card slots are all arranged at the edge of one side of the processing opening of the operator.

[0006] By setting these steps, you can understand how to use these parts: the clamping parts clamp the bent pipe to be ground, the limiting parts limit the bent pipe after grinding, the cleaning parts clean the surface of the bent pipe after grinding, and the auxiliary parts assist in cleaning the cleaning block after cleaning, thereby extending the service life of the cleaning block.

[0007] As a further solution of the present invention: the main body assembly also includes a set of sanding paper and a telescopic rod; The polishing papers are all fixed inside the processing port of the operator, and the telescopic rod is fixed between the bottom end of the placement plate and the machine body.

[0008] The grinding paper is used to grind the surface of the bent pipe. The grinding paper is tough. There are two grinding papers in total, which can be adjusted according to the size of the bent pipe. The telescopic rod is used to adjust the height of the placement plate.

[0009] As a further solution of the present invention: the clamping member further comprises a connecting hole, a moving block, a set of fixed plates and an annular plate; The connecting hole is opened on the inner top surface of the movable groove, the moving block is slidably connected inside the connecting hole, the bottom end of the moving block is fixedly connected to the edge of one side of the top of the moving plate, the fixed plates are fixed to one side of the moving plate, and one end of the annular plate is clamped between the inner sides of the fixed plates; The other end of the annular plate is fixedly connected with a clamping rod, and the other side of the movable plate is fixedly connected with a fixing block, and the position of the fixing block corresponds to that of the fixing plate.

[0010] The bent pipe to be ground is clamped by setting a movable annular plate, the connecting hole is used for connecting and moving the movable block, the movable block is used to limit the movement of the movable plate to prevent the movable plate from separating from the movable groove, the fixed plate is used for connecting the annular plate, and the clamping rod is used for the connection between the annular plate and the fixed block. When the annular plate is not in use, the annular plate is in a closed state, and the annular plate is pushed to open the annular plate. At this time, the bottom end of the bent pipe is placed on the movable plate, and the other end of the bent pipe is vertical to the bottom end of the bent pipe. Then the annular plate is pushed so that the annular plate drives the clamping rod to clamp with the fixed block.

[0011] As a further solution of the present invention: the fixing block is clamped with the clamping rod, and a limiting hole is provided at the connection between the two, and the limiting rod is connected to the limiting hole through a thread.

[0012] By setting a limiting rod, when the clamping rod and the fixed block are clamped, the limiting holes on the surfaces of the two are aligned, and then the limiting rod can be inserted into the limiting hole, and the limiting rod is rotated so that the clamping rod is firmly connected to the fixed block through the limiting rod, thereby limiting the rotation of the annular plate.

[0013] As a further solution of the present invention: the position limiting member further comprises a connecting plate, a set of fixed rails and a position limiting plate; The connecting plate is fixed between the bottom ends of the connecting rods, the fixed rails are fixed to the edge of one side of the top end of the machine body, and the limit plate is movably connected to one side of the top end of the moving rod; Slide blocks are fixedly connected to both side edges of the bottom end of the connecting plate, and the slide blocks are slidably connected to the inside of the fixed rail.

[0014] By setting a connecting plate, the connecting rods are connected together. When the annular plate clamps the bent pipe to be ground, the movable plate is pushed, so that the movable plate drives the bent pipe into the processing port of the operator, so that the bent pipe is inserted into the grinding paper. While the movable plate drives the bent pipe into the processing port, the operator starts the grinding paper to rotate and grind the surface of the bent pipe. When one end of the ground bent pipe contacts the limit plate, the grinding paper grinds to the bending part of the bent pipe. At this time, the staff presses the vertical surface of the bent pipe, so that the ground end of the bent pipe tilts up, causing one end of the bent pipe to push the limit plate to move upward, so that the limit plate moves upward through the moving rod. While moving upward, the bent pipe continues to push, so that the bent pipe pushes the movable plate to move outward, so that the movable plate moves above the fixed rail through the connecting rod and the connecting plate.

[0015] As a further solution of the present invention: the cleaning member also includes a semi-ring plate, three sets of springs and a cleaning block; The semi-ring plate is fixed between the top ends of the sliding blocks, the springs are fixed to the inner side of the semi-ring plate, and the cleaning block is fixed between the outer ends of each group of springs; The bottom end of the sliding block is fixedly connected with an extension rod, the other end of the extension rod is fixedly connected to the upper side of the outer side of the connecting rod, and the movable holes are located outside the connecting holes.

[0016] A semi-ring plate is set for connecting springs, with two springs in each group. The springs are used to connect the cleaning blocks. The extension rod is used for connecting the rod to drive the sliding block to move together, so that the sliding block moves to one side in the movable hole. When the movable plate moves, the movable plate pushes the movable rod and the connecting rod to move together, so that the connecting rod drives the sliding block to move in the movable hole through the extension rod, prompting the sliding block to drive the semi-ring plate and the cleaning block to move together.

[0017] As a further solution of the present invention: the auxiliary member also includes a sliding block and a scraper; The sliding block is slidably connected to the inside of the slot, and the scraper is fixed to the outer end of the sliding block; The bottom end of the scraper is in contact with the cleaning surface of the cleaning block.

[0018] By setting a sliding block, the scraper can be driven to move. When the cleaning plate cleans the ground elbow, dust from grinding remains on the cleaning surface of the cleaning plate. At this time, the scraper is pushed, and the thrust is pushed through the scraper to push the sliding block to move in the slot, prompting the scraper to move toward the processing port of the operator. When the semi-ring plate drives the cleaning block to move to its original position, the thrust during the movement prompts the scraper to scrape and clean the cleaning surface of the cleaning block.

[0019] As a further solution of the present invention: a magnetic plate is fixedly connected to the edge of the farther end of the slot, and the magnetic plate is adsorbed to the sliding block and the scraper.

[0020] By setting a magnetic plate, the scraper and the sliding block can be placed in a limited position when not in use, and the magnetic plate can limit the sliding block and the scraper during adsorption by magnetic force.

[0021] As a further solution of the present invention: a movable shaft is movably connected between the annular plate and the fixed plate, and the annular plate rotates through the movable shaft.

[0022] By setting a movable shaft, the annular plate can be switched to a different state. When in use, the annular plate can be pushed so that the annular plate can be opened outwards through the movable shaft. At this time, the annular plate is in an open state. When not in use, the annular plate is pushed to rotate to its original position so that the annular plate drives the clamping rod to clamp with the fixed block, and then the limiting rod is rotated and inserted into the connection between the two, so that the annular plate is in a clamping state.

[0023] As a further solution of the present invention: a cleaning plate is fixedly connected to the top of the placement plate on one side, and the cleaning plate is located between the connecting holes.

[0024] By setting the cleaning plate, the bottom of the bent pipe after grinding can be cleaned, and the cleaning block cleans the top and both sides of the bent pipe after grinding.

[0025] Compared with the prior art, the present invention has the following beneficial effects: By setting the clamping parts and the limiting parts, the staff can grind the bent pipe with the grinding paper only by pushing the bent pipe to move. There is no need for the staff to hold and rotate the bent pipe on both sides of the processing port of the operator. The bottom end of the bent pipe to be ground is placed on the movable plate, which is clamped by the annular plate. The movable plate is pushed so that the movable plate drives the bent pipe to be inserted into the processing port of the operator for grinding. After grinding, the staff presses the unground end of the bent pipe so that one end of the bent pipe contacts the limiting plate, and the bent pipe pushes the limiting plate up. The limiting plate moves up through the moving rod, thereby completing the grinding of the bent pipe. This process only requires the staff to push the bent pipe, reducing human intervention.

[0026] Based on the first beneficial effect, after the bent pipe is ground, the bent pipe is inserted into the cleaning block, so that the cleaning block moves toward the semi-ring plate through the spring, and when the ground bent pipe pushes the movable plate to move, the movable plate moves together with the connecting rod through the moving rod and the extending rod, so that the connecting rod drives the sliding block to move in the movable hole through the extending rod, prompting the sliding block to drive the semi-ring plate and the cleaning block to move together, so that when the ground bent pipe moves, the cleaning block follows the movement of the bent pipe through the sliding block, so that the cleaning block cleans the surface of the bent pipe when it moves, avoiding the staff's hands being covered with dust during grinding when holding the ground bent pipe with their hands.

[0027] Based on the second beneficial effect, by setting auxiliary parts, when the semi-ring plate moves with the bent pipe, the sliding block is manually linked to make the sliding block move in the slot, prompting the scraper to move toward the processing port of the operator. When the semi-ring plate drives the cleaning block to move to its original position, the thrust during movement prompts the scraper to scrape and clean the cleaning surface of the cleaning block, thereby avoiding dust residue on the surface of the cleaning block after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the appearance structure of the present invention; Figure 2 It is a schematic diagram of the exploded structure of the clamping member of the present invention; Figure 3 It is a schematic diagram of the exploded structure of the fixing block and the limiting rod of the present invention; Figure 4 It is a schematic diagram of the structure of the position-limiting member of the present invention; Figure 5 It is a schematic diagram of the specific structure of the position limiting member of the present invention; Figure 6 It is a schematic diagram of the structure of the cleaning part and the auxiliary part of the present invention; Figure 7 It is a schematic diagram of the bottom structure of the cleaning member of the present invention; Figure 8 It is a schematic diagram of the auxiliary component decomposition structure of the present invention.

[0029] In the figure: 1. main assembly; 11. machine body; 12. operator; 13. grinding paper; 14. placing plate; 15. telescopic rod; 2. clamping member; 21. movable groove; 22. moving plate; 23. connecting hole; 24. moving block; 25. fixed plate; 26. annular plate; 27. clamping rod; 28. fixed block; 29. ​​movable shaft; 291. limiting hole; 292. limiting rod; 3. limiting member; 31. moving rod; 32. connecting rod; 33. connecting plate; 34. fixed rail; 35. limiting plate; 36. slider; 4. cleaning member; 41. movable hole; 411. cleaning plate; 42. sliding block; 43. semi-annular plate; 44. spring; 45. cleaning block; 46. extension rod; 5. auxiliary member; 51. slot; 52. sliding block; 53. scraper; 54. magnetic plate. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0031] See also Figures 1 to 5 In an embodiment of the present invention, a surface processing and grinding device for a steel-jacketed direct-buried steam insulation elbow pipe comprises: a main body component 1, the main body component 1 comprises a body 11, an operator 12 and a placement plate 14; the operator 12 is fixed to one side of the top of the body 11, and the placement plate 14 is located on both sides of the processing port of the operator 12; The clamping member 2 includes a movable groove 21 and a movable plate 22; the movable groove 21 is provided in the central inner part of the outer end of the placement plate 14, and the movable plate 22 is slidably connected to the inner part of the movable groove 21; The limiting member 3 includes a group of moving rods 31 and connecting rods 32; the moving rods 31 are all penetrated and slidably connected to the inside of the protruding end of the moving plate 22 on one side, and the connecting rods 32 are slidably connected to the bottom end of the moving rods 31; The cleaning member 4 includes a movable hole 41 and a sliding block 42; the movable hole 41 is opened at both sides of the top and bottom ends of the placement plate 14, and the sliding block 42 is slidably connected inside the movable hole 41; Auxiliary part 5, the auxiliary part 5 includes a group of card slots 51; the card slots 51 are all opened at the edge of one side of the processing opening of the operator 12; The clamping member 2 further includes a connecting hole 23, a moving block 24, a set of fixing plates 25 and an annular plate 26; The connecting hole 23 is formed on the inner top surface of the movable groove 21, the moving block 24 is slidably connected to the inside of the connecting hole 23, the bottom end of the moving block 24 is fixedly connected to the edge of one side of the top end of the moving plate 22, the fixed plate 25 is fixed to one side of the moving plate 22, and one end of the annular plate 26 is clamped between the inner sides of the fixed plates 25; The other end of the annular plate 26 is fixedly connected with a clamping rod 27, and the other side of the movable plate 22 is fixedly connected with a fixing block 28, and the fixing block 28 corresponds to the position of the fixing plate 25; The fixing block 28 is clamped with the clamping rod 27, and a limit hole 291 is provided at the connection between the two, and the inner thread of the limit hole 291 is connected with the limit rod 292; A movable shaft 29 is movably connected between the annular plate 26 and the fixed plate 25, and the annular plate 26 rotates through the movable shaft 29; The limiting member 3 further includes a connecting plate 33, a set of fixing rails 34 and a limiting plate 35; The connecting plate 33 is fixed between the bottom ends of the connecting rods 32, the fixed rails 34 are fixed to the edge of one side of the top of the body 11, and the limiting plate 35 is movably connected to one side of the top of the moving rod 31; Slide blocks 36 are fixedly connected to both side edges of the bottom end of the connecting plate 33 , and the slide blocks 36 are slidably connected to the inside of the fixed rail 34 .

[0032] In this embodiment: when the component is not in use, the limiting rod 292 is inserted into the limiting hole 291, and the annular plate 26 is in a closed state. When the component is in use, the annular plate 26 is pushed by hand so that the annular plate 26 rotates through the movable shaft 29, so that the annular plate 26 is opened. At this time, the bottom end of the elbow is placed on the movable plate 22, and the other end of the elbow is in a vertical state with the bottom end of the elbow. Then the annular plate 26 is pushed by hand so that the annular plate 26 drives the clamping rod 27 to clamp with the fixed block 28, and the limiting holes 291 on the surfaces of the two are aligned. Then, the limiting rod 292 is held by hand to lock the fixing block 28. 92, insert the limiting rod 292 into the limiting hole 291, and rotate the limiting rod 292, so that the limiting rod 292 is firmly connected with the limiting hole 291 through the thread, so that the clamping rod 27 is firmly connected with the fixing block 28 through the limiting rod 292, so that the annular plate 26 is limited after rotation, and then the staff pushes the moving plate 22 by hand, at this time, the moving plate 22 moves into the movable groove 21, and the moving block 24 moves in the connecting hole 23 toward the direction of the operator 12, so that the moving plate 22 drives the bent pipe into the processing port of the operator 12, and the bent pipe is inserted The grinding paper 13 is inside the processing port, and the movable plate 22 drives the bent pipe to enter the processing port. At the same time, the operator 12 drives the grinding paper 13 to rotate and grind the surface of the bent pipe. After the bent pipe is ground, one end of the bent pipe contacts the limit plate 35. At this time, the grinding paper 13 is ground to the bending position of the bent pipe. The staff presses the vertical surface of the bent pipe, so that the ground end of the bent pipe is tilted, and one end of the bent pipe is pushed to push the limit plate 35. The thrust pushes the moving rod 31 upward through the limit plate 35, so that the limit plate 35 moves upward through the moving rod 31. While moving upward, the bent pipe continues to be pushed, so that the bent pipe is pushed upward. The movable plate 22 moves outward, causing the thrust to push the slider 36 to move in the fixed rail 34 through the connecting rod 32 and the connecting plate 33, so that the movable plate 22 pushes the movable rod 31 and the connecting rod 32 to move above the fixed rail 34 through the connecting plate 33, causing the movable plate 22 and the movable rod 31 to limit the movement of the ground bent pipe to a certain extent. When taking out the ground bent pipe, since the limit plate 35 is movably connected to the top of the movable rod 31, the limit plate 35 is rotated by hand to make the limit plate 35 rotate to the other side of the movable rod 31, thereby facilitating the removal of the ground bent pipe.

[0033] Please refer to Figure 1 , Figures 4 to 7 , the cleaning member 4 also includes a semi-ring plate 43, three sets of springs 44 and a cleaning block 45; The semi-ring plate 43 is fixed between the top ends of the sliding blocks 42, the springs 44 are all fixed to the inner side of the semi-ring plate 43, and the cleaning block 45 is fixed between the outer ends of each group of springs 44; The bottom end of the sliding block 42 is fixedly connected with an extension rod 46, and the other end of the extension rod 46 is fixedly connected to the upper outer side of the outer connecting rod 32, and the movable holes 41 are all located outside the connecting hole 23; A cleaning plate 411 is fixedly connected to the top of the placement plate 14 on one side, and the cleaning plate 411 is located between the connection holes 23 .

[0034] In this embodiment: the component is not in use, and the spring 44 is in a normal expanded state. When the component is in use, the staff pushes the end of the bent pipe after grinding to move and insert it into the cleaning block 45, so that the spring 44 contracts, prompting the cleaning block 45 to move toward the semi-ring plate 43 through the spring 44. When the ground bent pipe moves, the cleaning block 45 and the cleaning plate 411 jointly clean the grinding dust on the surface of the bent pipe during movement. When the ground bent pipe pushes the moving plate 22 to move, the moving plate 22 drives the extension rod 46 to move together through the moving rod 31 and the connecting rod 32, so that the connecting rod 32 drives the sliding block 42 to move in the movable hole 41 through the extension rod 46, prompting the sliding block 42 to drive the semi-ring plate 43 and the cleaning block 45 to move together, so that when the ground bent pipe continues to move, the cleaning block 45 follows the movement of the bent pipe through the sliding block 42, so that the cleaning block 45 and the cleaning plate 411 clean the surface of the bent pipe during movement, avoiding the staff from holding the ground bent pipe with their hands and being covered with grinding dust.

[0035] Please refer to Figure 1 , Figure 4 , Figures 6 to 8 , the auxiliary component 5 also includes a sliding block 52 and a scraper 53; The sliding block 52 is slidably connected to the inside of the slot 51, and the scraper 53 is fixed to the outer end of the sliding block 52; The bottom end of the scraper 53 is in contact with the cleaning surface of the cleaning block 45; A magnetic plate 54 is fixedly connected to the edge of the farther end of the slot 51 , and the magnetic plate 54 is adsorbed to the sliding block 52 and the scraper 53 .

[0036] In this embodiment: when the components are not in use, the magnetic plate 54 is adsorbed with the top of the scraper 53 and the top of the sliding block 52. When the semi-annular plate 43 moves following the bend, the scraper 53 is manually pushed so that the thrust pushes the sliding block 52 to move in the slot 51 through the scraper 53, prompting the scraper 53 to move toward the processing port of the operator 12 through the sliding block 52. After the scraper 53 moves, the semi-annular plate 43 drives the cleaning block 45 to move to its original position. At this time, the thrust of the semi-annular plate 43 during movement prompts the scraper 53 to scrape and clean the cleaning surface of the cleaning block 45 to avoid dust residue on the surface of the cleaning block 45 after cleaning.

[0037] Working principle: S1. Open the annular plate 26, place the bent pipe to be ground on the movable plate 22, close the annular plate 26, so that the annular plate 26 drives the clamping rod 27 to clamp with the fixed block 28, insert the limit rod 292 into the connection between the two, push the movable plate 22, so that the movable plate 22 drives the bent pipe to be inserted between the grinding papers 13; S2, the bent pipe is inserted into the grinding paper 13, the operator 12 drives the grinding paper 13 to rotate and grind the surface of the bent pipe, and the ground bent pipe is inserted into the cleaning block 45, so that when the ground bent pipe moves, the cleaning block 45 cleans the dust on the surface of the bent pipe; S3, when the ground elbow contacts the limit plate 35, the unground end of the elbow is pressed, so that the ground elbow pushes the limit plate 35 upward, so that the limit plate 35 and the extended moving rod 31 limit the raised and ground end of the elbow; S4, after the moving rod 31 is extended, one end of the ground curved pipe pushes the moving plate 22 to extend through the moving rod 31, so that the moving plate 22 pushes the connecting rod 32 to move together with the moving rod 31, prompting the connecting rod 32 to drive the sliding block 42 to move together through the extension rod 46, so that the sliding block 42 drives the semi-ring plate 43 and the cleaning block 45 to move together, and the cleaning block 45 moves with the curved pipe through the sliding block 42, so that the cleaning block 45 cleans the surface of the curved pipe when it moves; S5. After the semi-annular plate 43 moves with the bent pipe, the scraper 53 is manually pushed to move toward the processing port of the operator 12. The semi-annular plate 43 drives the cleaning block 45 to move to its original position. At this time, the thrust of the semi-annular plate 43 during movement prompts the scraper 53 to scrape and clean the cleaning surface of the cleaning block 45 to avoid dust residue on the surface of the cleaning block 45 after cleaning.

[0038] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A surface processing and grinding device for a steel-in-steel direct-buried steam insulation elbow, characterized in that: include: A main body component (1), the main body component (1) comprising a body (11), an operator (12) and a placement plate (14); the operator (12) is fixed to one side of the top end of the body (11), and the placement plate (14) is located on both sides of a processing opening of the operator (12); A clamping member (2), the clamping member (2) comprising a movable groove (21) and a movable plate (22); the movable groove (21) is provided in the central interior of the outer end of the placement plate (14), and the movable plate (22) is slidably connected to the interior of the movable groove (21); A limiting member (3), the limiting member (3) comprising a group of moving rods (31) and connecting rods (32); the moving rods (31) all penetrate and are slidably connected to the inside of the protruding end of the moving plate (22) on one side, and the connecting rods (32) are slidably connected to the bottom ends of the moving rods (31); A cleaning member (4), the cleaning member (4) comprising a movable hole (41) and a sliding block (42); the movable hole (41) is formed on both sides of the top and bottom ends of the placement plate (14), and the sliding block (42) is slidably connected to the inside of the movable hole (41); An auxiliary component (5), the auxiliary component (5) comprising a group of slots (51); the slots (51) are all arranged at the edge of one side of the processing opening of the operator (12).

2. The surface processing and grinding device of a steel-in-steel direct-buried steam insulation elbow pipe according to claim 1 is characterized in that: The main body component (1) also includes a set of sanding paper (13) and a telescopic rod (15); The polishing paper (13) is fixed inside the processing opening of the operator (12), and the telescopic rod (15) is fixed between the bottom end of the placement plate (14) and the machine body (11).

3. The surface processing and grinding device of a steel-in-steel direct-buried steam insulation elbow pipe according to claim 1 is characterized in that: The clamping member (2) further comprises a connecting hole (23), a moving block (24), a set of fixing plates (25) and an annular plate (26); The connecting hole (23) is formed on the inner top surface of the movable groove (21), the movable block (24) is slidably connected to the inside of the connecting hole (23), the bottom end of the movable block (24) is fixedly connected to the edge of one side of the top end of the movable plate (22), the fixed plate (25) is fixed to one side of the movable plate (22), and one end of the annular plate (26) is clamped between the inner sides of the fixed plates (25); The other end of the annular plate (26) is fixedly connected to a clamping rod (27), and the other side of the movable plate (22) is fixedly connected to a fixing block (28), and the fixing block (28) corresponds to the fixing plate (25) in position.

4. The surface processing and grinding device of a steel-in-steel direct-buried steam insulation elbow pipe according to claim 3 is characterized in that: The fixing block (28) is clamped with the clamping rod (27), and a limiting hole (291) is provided at the connection between the two. The limiting hole (291) is internally threadedly connected to the limiting rod (292).

5. The surface processing and grinding device of a steel-in-steel direct-buried steam insulation elbow pipe according to claim 1 is characterized in that: The limiting member (3) further comprises a connecting plate (33), a set of fixing rails (34) and a limiting plate (35); The connecting plate (33) is fixed between the bottom ends of the connecting rods (32), the fixed rails (34) are fixed to the edge of one side of the top end of the machine body (11), and the limiting plate (35) is movably connected to one side of the top end of the moving rod (31); Slide blocks (36) are fixedly connected to both side edges of the bottom end of the connection plate (33), and the slide blocks (36) are slidably connected to the inside of the fixed rail (34).

6. The surface processing and grinding device for a steel-in-steel direct-buried steam insulation elbow pipe according to claim 1 is characterized in that: The cleaning member (4) further comprises a semi-annular plate (43), three sets of springs (44) and a cleaning block (45); The semi-ring plate (43) is fixed between the top ends of the sliding block (42), the springs (44) are all fixed to the inner side of the semi-ring plate (43), and the cleaning block (45) is fixed between the outer ends of each group of the springs (44); The bottom end of the sliding block (42) is fixedly connected to an extension rod (46), the other end of the extension rod (46) is fixedly connected to the upper outer side surface of the outer connecting rod (32), and the movable holes (41) are located outside the connecting hole (23).

7. The surface processing and grinding device for a steel-in-steel direct-buried steam insulation elbow pipe according to claim 1 is characterized in that: The auxiliary component (5) further comprises a sliding block (52) and a scraper (53); The sliding block (52) is slidably connected to the inside of the slot (51), and the scraper (53) is fixed to the outer end of the sliding block (52); The bottom end of the scraper (53) is in contact with the cleaning surface of the cleaning block (45).

8. The surface processing and grinding device for a steel-in-steel direct-buried steam insulation elbow pipe according to claim 1 is characterized in that: A magnetic plate (54) is fixedly connected to the edge of the farther end of the slot (51), and the magnetic plate (54) is adsorbed to the sliding block (52) and the scraper (53).

9. The surface processing and grinding device for a steel-in-steel direct-buried steam insulation elbow pipe according to claim 3 is characterized in that: A movable shaft (29) is movably connected at the clamping point between the annular plate (26) and the fixed plate (25), and the annular plate (26) rotates via the movable shaft (29).

10. The surface processing and grinding device of a steel-in-steel direct-buried steam insulation elbow pipe according to claim 1 is characterized in that: A cleaning plate (411) is fixedly connected to the top of the placement plate (14) on one side, and the cleaning plate (411) is located between the connection holes (23).

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