Pipe wall polishing device for metal pipeline manufacturing

By designing a pipe wall grinding device for metal pipes, the movement of the grinding parts is achieved by using the combination of slide seats and mounting rings, the problems of high energy consumption and high cost in the grinding process of large pipes are solved, low energy consumption and efficient grinding effect are achieved, and the efficiency of waste chip collection is improved.

CN119526150AInactive Publication Date: 2025-02-28JIANGSU LONGMA PRECISION MASCH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510026716.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-08
Publication Date
2025-02-28
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During the polishing of large metal pipes, traditional pipe rotation methods will lead to high energy consumption and high cost problems.

Method used

A pipe wall grinding device for metal pipe manufacturing is designed, including a base frame, an auxiliary support seat, a spindle box, a grinding unit and a waste chip treatment unit. The device realizes movement and rotation of the polishing member along the axis of the pipe by combining the second slide and the mounting ring to avoid rotation of the pipe.

Benefits of technology

The device achieves comprehensive polishing of the pipe through the movement of the grinding parts while the pipe is kept fixed, reducing energy consumption and reducing the cost of grinding operations. In addition, the waste chip treatment unit accelerates the airflow through the impeller, improving the efficiency of waste chip collection.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119526150A_ABST
    Figure CN119526150A_ABST
Patent Text Reader

Abstract

The invention relates to the field of pipeline polishing, in particular to a pipe wall polishing device for metal pipeline manufacturing. The pipe wall grinding device for metal pipeline manufacturing comprises a bottom frame, an auxiliary supporting seat, a spindle box, a grinding unit and a waste chip treatment unit. The spindle box is fixed to one side of the bottom frame, and a three-jaw chuck used for clamping a pipeline is installed on the spindle box. The polishing unit comprises a second sliding seat, a first mounting plate is fixed to the upper end of the second sliding seat, a first mounting frame is fixed to the first mounting plate, a fixing ring frame is fixed to the upper end of the first mounting frame, a to-be-machined pipeline concentrically penetrates through the fixing ring frame, a mounting ring is rotationally connected to one side of the fixing ring frame, and the mounting ring is rotationally connected to the other side of the fixing ring frame. And a plurality of polishing pieces are fixed to the other side of the mounting ring. According to the pipe wall grinding device for metal pipeline manufacturing, under the condition that the pipeline is kept in a fixed state, comprehensive grinding of the pipeline can be achieved through movement of the grinding piece, the needed energy consumption is lower, and the cost of grinding operation is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the field of pipeline grinding, in particular to a pipe wall grinding device for manufacturing metal pipelines. Background Art

[0002] A pipeline is a tubular structure used to transport liquids, gases or solid substances. They are widely used in various fields, including oil, gas, water treatment, chemical industry, mining, etc. Pipes can be made of a variety of materials, such as steel, copper, plastic, cast iron, etc. When selecting materials, factors such as the nature of the transported substance, the working environment, and corrosion resistance should be considered.

[0003] Pipe grinding refers to grinding the surface or interior of a pipe to achieve the purpose of flattening, smoothing or removing defects. For some small metal pipes, their weight is relatively low, and they are generally clamped by a three-jaw chuck, and then the pipe is driven to rotate. During this process, the grinding workpiece contacts the pipe to achieve the grinding of the pipe. For some larger pipes, if the pipe is rotated, it will generate relatively large energy consumption and the cost of the grinding operation will be relatively high.

[0004] Therefore, it is necessary to provide a new pipe wall grinding device for metal pipe manufacturing to solve the above technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a pipe wall grinding device for metal pipe manufacturing.

[0006] The pipe wall grinding device for metal pipe manufacturing provided by the present invention comprises a base frame, an auxiliary support seat, a main shaft box, a grinding unit and a waste chip processing unit;

[0007] The waste chip processing unit is installed on the grinding unit, and the grinding unit is movably installed on the base frame;

[0008] The spindle box is fixed to one side of the base frame, and a three-jaw chuck for clamping the pipe is installed on the spindle box;

[0009] The grinding unit includes a second slide, a first mounting plate is fixed on the upper end of the second slide, a first mounting frame is fixed on the first mounting plate, a fixed ring frame is fixed on the upper end of the first mounting frame, the processed pipe passes concentrically through the fixed ring frame, and the fixed ring frame moves radially relative to the processed pipe, a concentrically arranged mounting ring is rotatably connected to one side of the fixed ring frame, and a plurality of grinding pieces distributed in an annular shape and equidistantly arranged are fixed on the other side of the mounting ring.

[0010] Preferably, the base frame has two layers, the lower layer of the base frame is fixed with a first linear track along the width direction, the length of the first linear track is twice the width of the base frame, and the upper end is fixed with a second linear track along the length direction;

[0011] The second slide is installed on the second linear track and can move along the second linear track.

[0012] Preferably, a concentrically arranged positioning inner ring and a transmission outer gear ring are fixed on one side of the mounting ring, a gap is provided between the positioning inner ring and the transmission outer gear ring, the fixing ring frame is embedded in the gap, and the positioning inner ring and the fixing ring frame are connected by a bearing;

[0013] A second mounting plate is also fixed on one side of the fixed ring frame, a motor is fixed on the second mounting plate, a driving gear is fixed on the output end of the motor, and the driving gear is meshed with the transmission outer gear ring to drive the mounting ring to rotate.

[0014] Preferably, the grinding part includes a second mounting frame, the second mounting frame is fixed to one side of the mounting ring, a second hydraulic cylinder is fixed on the second mounting frame, the output end of the second hydraulic cylinder is along the radial direction of the mounting ring, and a third mounting frame is fixed on the output end, and a grinding block for grinding is fixed on the third mounting frame.

[0015] Preferably, the auxiliary support seat is in two groups, including a first slide, which is installed on a first linear rail and can be completely moved to the inside of the base frame or completely moved to the outside of the base frame along the first linear rail. A vertically retractable first hydraulic cylinder is installed on the upper end of the first slide, and a support bracket for supporting the pipeline is fixed on the upper end of the first hydraulic cylinder.

[0016] Preferably, the waste chip processing unit comprises a guide pipe, the guide pipe is fixed to the lower end of the first mounting plate, a waste collecting bucket is fixed at one end of the guide pipe, the upper end of the waste collecting bucket has an opening corresponding to the position of the grinding piece in the vertical direction, and an exhaust pipe is fixed on the circumferential outer wall of the guide pipe and near the other end;

[0017] The guide tube is rotatably connected to a concentrically arranged first transmission shaft, one end of which is fixed with an impeller located inside the guide tube, and the other end of the first transmission shaft extends to the outside of the guide tube and is connected through a transmission member and a transmission outer gear ring.

[0018] Preferably, the transmission member comprises a positioning seat, the positioning seat is fixed to the upper end of the first mounting plate, a second transmission shaft is rotatably connected to the positioning seat, a driven gear is fixed to one end of the second transmission shaft, the driven gear and the transmission outer gear ring are meshed for transmission, and a driving pulley is fixed to the other end of the second transmission shaft;

[0019] A driven pulley is also fixed to one end of the first transmission shaft, and the driven pulley is connected to the driving pulley via a transmission belt.

[0020] Preferably, a waste collecting cylinder is detachably connected to the interior of the exhaust pipe, a mesh plate is fixed to one end of the waste collecting cylinder, and a mesh cylinder extending toward the interior of the exhaust pipe is integrally connected to the mesh plate.

[0021] Preferably, the waste collecting barrel is fixed on the exhaust pipe by magnetic attraction.

[0022] Compared with the related art, the pipe wall grinding device for metal pipe manufacturing provided by the present invention has the following advantages:

[0023] Beneficial effects:

[0024] 1. The second slide is the installation base of the entire grinding unit. It can move along the length direction of the base frame to drive each grinding piece to move along the axis direction of the pipeline. At the same time, the mounting ring can drive the grinding piece to rotate in a circle. Therefore, when the pipeline remains fixed, the pipeline can be fully ground by the movement of the grinding piece. The energy consumption required will be lower, reducing the cost of the grinding operation;

[0025] 2. During the rotation of the mounting ring, the first transmission shaft can be driven to rotate through the transmission member, thereby driving the impeller to rotate rapidly. When the impeller rotates, the airflow can be accelerated to generate suction at the waste collecting bucket, thereby collecting the waste chips generated by the grinding operation, which is convenient for subsequent cleaning of the waste chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a preferred embodiment of a pipe wall grinding device for metal pipe manufacturing provided by the present invention;

[0027] Figure 2 It is a structural schematic diagram of the auxiliary support seat shown in the present invention;

[0028] Figure 3 The schematic diagram of the structure of the grinding unit shown in the present invention is Figure 1 ;

[0029] Figure 4 The schematic diagram of the structure of the grinding unit shown in the present invention is Figure 2 ;

[0030] Figure 5 The schematic diagram of the structure of the grinding unit shown in the present invention is Figure 3 ;

[0031] Figure 6 The schematic diagram of the structure of the waste processing unit shown in the present invention is Figure 1 ;

[0032] Figure 7 The schematic diagram of the structure of the waste processing unit shown in the present invention is Figure 2 ;

[0033] Figure 8 The schematic diagram of the structure of the waste processing unit shown in the present invention is Figure 3 .

[0034] Numbers in the figure: 1, chassis; 2, first linear track;

[0035] 3. Auxiliary support seat; 31. First slide seat; 32. First hydraulic cylinder; 33. Support bracket;

[0036] 4. Spindle box; 5. Three-jaw chuck; 6. Second linear track;

[0037] 7. grinding unit; 71. second slide; 72. first mounting plate; 73. first mounting frame; 74. fixed ring frame; 75. mounting ring; 76. positioning inner ring; 77. transmission outer gear ring; 78. second mounting plate; 79. motor; 710. driving gear; 711. second mounting frame; 712. second hydraulic cylinder; 713. third mounting frame; 714. grinding block;

[0038] 8. Waste processing unit; 81. Guide pipe; 82. Waste collecting bucket; 83. Exhaust pipe; 84. First transmission shaft; 85. Driven pulley; 86. Impeller; 87. Positioning seat; 88. Second transmission shaft; 89. Driven gear; 810. Driving pulley; 811. Transmission belt; 812. Waste collecting cylinder; 813. Mesh plate; 814. Mesh cylinder. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0041] See also Figures 1 to 8 The embodiment of the present invention provides a pipe wall grinding device for metal pipe manufacturing, the pipe wall grinding device for metal pipe manufacturing includes:

[0042] A chassis 1, the chassis 1 has two layers, a first linear track 2 along the width direction is fixed to the lower layer of the chassis 1, the length of the first linear track 2 is twice the width of the chassis 1, and a second linear track 6 along the length direction is fixed to the upper end;

[0043] Auxiliary support seats 3, which are divided into two groups and are installed on the first linear track 2 to support and fix the pipeline;

[0044] A spindle box 4 is fixed on the base frame 1, and a three-jaw chuck 5 is installed on the spindle box 4;

[0045] A grinding unit 7, the grinding unit 7 is mounted on the second linear track 6;

[0046] The waste chip processing unit 8 is installed on the grinding unit 7 and moves horizontally together with the grinding unit 7.

[0047] It should be noted that: in the device, the auxiliary support seat 3 is used to support the pipeline and improve the stability of the pipeline, while the three-jaw chuck 5 clamps one end of the pipeline and does not drive the pipeline to rotate synchronously, and is only used to further position the pipeline; and the grinding unit 7 is movable, that is, the movement of the grinding unit 7 is used to achieve comprehensive grinding of the pipeline, so when grinding some large pipelines, the required energy consumption will be lower, reducing the cost of the grinding operation;

[0048] When positioning the pipeline, both sets of auxiliary support seats 3 are moved to the inside of the base frame 1, and then the pipeline is mounted on the auxiliary support seats 3 and supported. At the same time, the height of the pipeline can be adjusted so that one end of the pipeline corresponds to the position of the three-jaw chuck 5, so as to facilitate the three-jaw chuck 5 to clamp and position the pipeline;

[0049] After the pipe is clamped and fixed, the grinding unit 7 can be turned on, and the grinding unit 7 moves along the other end of the pipe to the outer wall of the pipe, and the grinding piece contacts the outer wall of the pipe, and the grinding piece is used to grind the pipe; wherein, when the grinding unit 7 moves to the auxiliary support seat 3 at the near position, the auxiliary support seat 3 releases the support for the pipe and moves to the outside of the base frame 1 to ensure the continuous feeding of the grinding unit 7, and after exceeding the auxiliary support seat 3, the auxiliary support seat 3 supports the pipe again; and after the grinding unit 7 moves to the position of the auxiliary support seat 3 at the far position, the auxiliary support seat 3 is adjusted in the same way, so when performing the grinding operation, there is always an auxiliary support seat 3 to cooperate with the three-jaw chuck 5 to support and position the pipe;

[0050] The waste chip processing unit 8 is installed on the grinding unit 7, so it can move together with the grinding unit 7 to continuously collect the waste chips generated during the grinding process, which is convenient for subsequent cleaning of the waste chips.

[0051] In the embodiments of the present invention, please refer to Figure 2The auxiliary support seat 3 is composed of two groups, including a first slide 31. The first slide 31 is installed on the first linear track 2 and can be completely moved to the inside of the base frame 1 or completely moved to the outside of the base frame 1 along the first linear track 2. A vertically retractable first hydraulic cylinder 32 is installed on the upper end of the first slide 31, and a support bracket 33 for supporting the pipeline is fixed on the upper end of the first hydraulic cylinder 32.

[0052] It should be noted that: for the auxiliary support seat 3, with the first slide seat 31 as the installation basis, it can move along the first linear rail 2 to adjust its own position. At the same time, the first hydraulic cylinder 32 can drive the support bracket 33 to be raised and lowered, so as to support the pipeline using the support bracket 33.

[0053] In the embodiments of the present invention, please refer to Figures 3 to 5 The grinding unit 7 includes a second slide 71, which is mounted on the second linear track 6 and can move along the second linear track 6. A first mounting plate 72 is fixed to the upper end of the second slide 71, a first mounting frame 73 is fixed to the first mounting plate 72, a fixed ring frame 74 is fixed to the upper end of the first mounting frame 73, the processed pipe passes through the fixed ring frame 74 concentrically, and the fixed ring frame 74 moves radially relative to the processed pipe, and a concentrically arranged mounting ring 75 is arranged on one side of the fixed ring frame 74, and the mounting ring 75 A concentrically arranged positioning inner ring 76 and a transmission outer gear ring 77 are fixed on one side, a gap is provided between the positioning inner ring 76 and the transmission outer gear ring 77, a fixed ring frame 74 is embedded in the gap, the positioning inner ring 76 and the fixed ring frame 74 are connected by bearings, a second mounting plate 78 is also fixed on one side of the fixed ring frame 74, a motor 79 is fixed on the second mounting plate 78, a driving gear 710 is fixed on the output end of the motor 79, the driving gear 710 is meshed with the transmission outer gear ring 77, and is used to drive the mounting ring 75 to rotate;

[0054] A plurality of grinding pieces distributed in an annular shape and arranged equidistantly are fixed to the other side of the mounting ring 75, and the grinding pieces include a second mounting frame 711, which is fixed to one side of the mounting ring 75, and a second hydraulic cylinder 712 is fixed on the second mounting frame 711, and an output end of the second hydraulic cylinder 712 is along the radial direction of the mounting ring 75, and a third mounting frame 713 is fixed at the output end, and a grinding block 714 for grinding is fixed on the third mounting frame 713.

[0055] It should be noted that: for the grinding unit 7, based on the second slide 71, the second slide 71 can move along the second linear track 6 to achieve its own feeding; at the same time, the mounting ring 75 is a structure for mounting the grinding piece, which is rotatably mounted on the fixed ring frame 74, that is, the driving gear 710 is driven to rotate by the motor 79, and the driving gear 710 and the transmission outer gear ring 77 are used to drive the mounting ring 75 to rotate, thereby driving each grinding piece to rotate, so as to achieve circumferential grinding of the pipeline, and cooperate with the movement and feeding of the second slide 71 to achieve comprehensive grinding of the pipeline;

[0056] The second hydraulic cylinder 712 in the grinding piece can move the grinding block 714 to make the grinding block 714 contact with the pipe, so it can be applied to pipes of different diameters and has a wider range of applications.

[0057] In the embodiments of the present invention, please refer to Figures 6 to 8 The waste chip processing unit 8 includes a guide pipe 81, which is fixed to the lower end of the first mounting plate 72. A waste collecting bucket 82 is fixed at one end of the guide pipe 81. The upper end of the waste collecting bucket 82 has an opening corresponding to the position of the grinding piece in the vertical direction. An exhaust pipe 83 is fixed to the outer wall of the guide pipe 81 and close to the other end.

[0058] The guide tube 81 is rotatably connected to a first transmission shaft 84 which is arranged concentrically. An impeller 86 located inside the guide tube 81 is fixed to one end of the first transmission shaft 84, and the other end of the first transmission shaft 84 extends to the outside of the guide tube 81 and is connected to the guide tube 81 through a transmission member and a transmission outer gear ring 77.

[0059] The transmission member includes a positioning seat 87, which is fixed to the upper end of the first mounting plate 72, and a second transmission shaft 88 is rotatably connected to the positioning seat 87. A driven gear 89 is fixed to one end of the second transmission shaft 88, and the driven gear 89 is meshed with the transmission outer gear ring 77 for transmission. A driving pulley 810 is fixed to the other end of the second transmission shaft 88.

[0060] A driven pulley 85 is also fixed to one end of the first transmission shaft 84, and the driven pulley 85 is connected to the driving pulley 810 via a transmission belt 811;

[0061] A waste collecting cylinder 812 is magnetically fixed inside the exhaust pipe 83 , a mesh plate 813 is fixed at one end of the waste collecting cylinder 812 , and a mesh cylinder 814 extending toward the interior of the exhaust pipe 83 is integrally connected to the mesh plate 813 .

[0062] It should be noted that: during the rotation of the mounting ring 75, the transmission outer gear ring 77 can drive the driven gear 89 to rotate, and then drive the first transmission shaft 84 to rotate through the pulley transmission. The other end of the first transmission shaft 84 has an impeller 86 located inside the guide tube 81. When the impeller 86 rotates, it can accelerate the rapid flow of airflow, so that the waste collecting bucket 82 generates adsorption force, thereby improving the collection effect of waste debris;

[0063] A waste collecting tube 812 is installed inside the exhaust duct 83. One end of the waste collecting tube 812 is closed by a mesh plate 813, so that waste debris can be collected. In addition, there is a mesh tube 814 on the mesh plate 813. The mesh tube 814 extends toward the inside of the exhaust duct 83. Therefore, the collected waste debris is not easy to accumulate outside the mesh tube 814, but will be concentrated on the mesh plate 813. At this time, the ventilation effect of the mesh tube 814 can be guaranteed. When collecting waste debris, the cleaning frequency of the waste collecting tube 812 can be reduced.

[0064] The specific use process of the device is as follows:

[0065] (1) Fixing of the processed pipe;

[0066] When positioning the pipeline, both sets of auxiliary support seats 3 are moved to the inside of the base frame 1, and then the pipeline is mounted on the auxiliary support seats 3 and supported. At the same time, the height of the pipeline can be adjusted so that one end of the pipeline corresponds to the position of the three-jaw chuck 5, so as to facilitate the three-jaw chuck 5 to clamp and position the pipeline;

[0067] (2) Grinding;

[0068] In the grinding unit 7, based on the second slide 71, the second slide 71 can move along the second linear track 6 to realize its own feeding; at the same time, the mounting ring 75 is a structure for mounting the grinding piece, which can be rotatably mounted on the fixed ring frame 74, that is, the driving gear 710 is driven to rotate by the motor 79, and the driving gear 710 and the transmission outer gear ring 77 are used to drive the mounting ring 75 to rotate, thereby driving each grinding piece to rotate, and the second hydraulic cylinder 712 in the grinding piece can drive the grinding block 714 to move, so that the grinding block 714 contacts the outer wall of the pipe, and realizes comprehensive grinding of the pipe during the rotation and movement.

[0069] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pipe wall grinding device for metal pipe manufacturing, comprising a base frame (1), an auxiliary support seat (3), a spindle box (4), a grinding unit (7) and a waste chip processing unit (8), characterized in that: The waste chip processing unit (8) is installed on the grinding unit (7), and the grinding unit (7) is movably installed on the base frame (1); The spindle box (4) is fixed to one side of the base frame (1), and a three-jaw chuck (5) for clamping a pipe is installed on the spindle box (4); The grinding unit (7) comprises a second slide (71), a first mounting plate (72) is fixed on the upper end of the second slide (71), a first mounting frame (73) is fixed on the first mounting plate (72), a fixed ring frame (74) is fixed on the upper end of the first mounting frame (73), the processed pipe passes through the fixed ring frame (74) concentrically, and the fixed ring frame (74) moves radially relative to the processed pipe, a concentrically arranged mounting ring (75) is rotatably connected to one side of the fixed ring frame (74), and a plurality of grinding pieces distributed in an annular shape and arranged equidistantly are fixed to the other side of the mounting ring (75).

2. The pipe wall grinding device for metal pipe manufacturing according to claim 1, characterized in that: The base frame (1) has two layers, an upper layer and an lower layer, a first linear track (2) along the width direction is fixed to the lower layer of the base frame (1), the length of the first linear track (2) is twice the width of the base frame (1), and a second linear track (6) along the length direction is fixed to the upper end; The second slide seat (71) is mounted on the second linear track (6) and can move along the second linear track (6).

3. The pipe wall grinding device for metal pipe manufacturing according to claim 1, characterized in that: A concentrically arranged positioning inner ring (76) and a transmission outer gear ring (77) are fixed on one side of the mounting ring (75); a gap is provided between the positioning inner ring (76) and the transmission outer gear ring (77); the fixed ring frame (74) is embedded in the gap; and the positioning inner ring (76) and the fixed ring frame (74) are connected by a bearing; A second mounting plate (78) is also fixed on one side of the fixed ring frame (74), a motor (79) is fixed on the second mounting plate (78), a driving gear (710) is fixed on the output end of the motor (79), and the driving gear (710) is meshed with the transmission outer gear ring (77) to drive the mounting ring (75) to rotate.

4. The pipe wall grinding device for metal pipe manufacturing according to claim 1, characterized in that: The grinding member comprises a second mounting frame (711), the second mounting frame (711) being fixed to one side of the mounting ring (75), a second hydraulic cylinder (712) being fixed to the second mounting frame (711), an output end of the second hydraulic cylinder (712) being along the radial direction of the mounting ring (75), and a third mounting frame (713) being fixed to the output end, and a grinding block (714) for grinding being fixed to the third mounting frame (713).

5. The pipe wall grinding device for metal pipe manufacturing according to claim 1, characterized in that: The auxiliary support seat (3) is composed of two groups, including a first slide seat (31), the first slide seat (31) is installed on the first linear track (2), and can be completely moved along the first linear track (2) to the inside of the base frame (1) or completely moved to the outside of the base frame (1), a vertically telescopic first hydraulic cylinder (32) is installed on the upper end of the first slide seat (31), and a support bracket (33) for supporting the pipeline is fixed on the upper end of the first hydraulic cylinder (32).

6. The pipe wall grinding device for metal pipe manufacturing according to claim 1, characterized in that: The waste chip processing unit (8) comprises a guide pipe (81), the guide pipe (81) is fixed to the lower end of the first mounting plate (72), a waste collecting bucket (82) is fixed at one end of the guide pipe (81), the upper end of the waste collecting bucket (82) has an opening corresponding to the position of the grinding piece in the vertical direction, and an exhaust pipe (83) is fixed on the circumferential outer wall of the guide pipe (81) and close to the other end; The guide tube (81) is rotatably connected to a first transmission shaft (84) arranged concentrically; one end of the first transmission shaft (84) is fixed with an impeller (86) located inside the guide tube (81); the other end of the first transmission shaft (84) extends to the outside of the guide tube (81) and is transmission-connected via a transmission member and a transmission outer gear ring (77).

7. The pipe wall grinding device for metal pipe manufacturing according to claim 6, characterized in that: The transmission member comprises a positioning seat (87), the positioning seat (87) is fixed to the upper end of the first mounting plate (72), a second transmission shaft (88) is rotatably connected to the positioning seat (87), a driven gear (89) is fixed to one end of the second transmission shaft (88), the driven gear (89) and the transmission outer gear ring (77) are meshed for transmission, and a driving pulley (810) is fixed to the other end of the second transmission shaft (88); A driven pulley (85) is also fixed to one end of the first transmission shaft (84), and the driven pulley (85) and the driving pulley (810) are connected via a transmission belt (811).

8. The pipe wall grinding device for metal pipe manufacturing according to claim 6, characterized in that: A waste collecting cylinder (812) can be detachably connected to the interior of the exhaust pipe (83), a mesh plate (813) is fixed to one end of the waste collecting cylinder (812), and a mesh cylinder (814) extending toward the interior of the exhaust pipe (83) is integrally connected to the mesh plate (813).

9. The pipe wall grinding device for metal pipe manufacturing according to claim 8, characterized in that: The waste collecting cylinder (812) is fixed on the exhaust pipe (83) by magnetic attraction.