Polishing device for inner wall of long pipe

Abstract

The utility model relates to the technical field of polishing, and discloses a long pipe inner wall polishing device which is suitable for pipe fittings and is characterized by comprising a driving device, a rotating shaft connected with the driving device, a polishing wheel connected with the rotating shaft and the rotating shaft, the polishing wheel and the pipe fittings are coaxially arranged, the polishing wheel rotates along with the rotating shaft and is used for polishing the inner walls of the pipe fittings, and the rotating shaft is sleeved with a coaxially-arranged lengthened pipe. One end of the extension pipe is connected with the bearing, the extension pipe is rotationally connected with the polishing wheel through the bearing, the other end of the extension pipe is fixedly provided with the supporting seat, the supporting seat is connected with the supporting plate, the supporting plate is connected with the support, and the pulley is arranged at the bottom of the support. According to the long pipe inner wall polishing device, the speed and pressure of the polishing wheel are adjusted through the driving device, so that the smoothness of the inner wall of a pipe fitting is effectively improved, the cost is reduced, meanwhile, the polishing effect can be improved, an operator only needs to hold a lengthened pipe to move the lengthened pipe, the position of the polishing wheel can be adjusted, and therefore the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing, in particular to a long tube inner wall polishing device. Background Art

[0002] Stainless steel long tubes have a wide range of applications. When used, the inner wall of stainless steel long tubes needs to be polished. In the chemical industry, polished stainless steel long tubes can be used to transport corrosive media to reduce wear and corrosion of the inner wall of the pipe; in the food processing industry, polished stainless steel long tubes can meet food-grade hygiene standards and ensure food safety; in the pharmaceutical industry, polished stainless steel long tubes can be used for material transportation in the process of drug production to avoid contamination and cross infection. In addition, in high-end manufacturing industries such as aerospace and automobile manufacturing, polishing the inner wall of stainless steel long tubes is also one of the essential processes.

[0003] The existing polishing technologies include mechanical polishing, electrolytic polishing and fluid dynamic polishing. Among them, the mechanical polishing effect is easily affected by the tool material and operating skills, and the operation is difficult; the cost of electrolytic polishing is relatively high; fluid dynamic polishing (using high-speed flowing liquid or abrasive media to impact and rub the inner wall of a stainless steel long tube) causes relatively large damage to the tube wall, affecting the polishing effect, and further inspection and maintenance are required after the polishing is completed. Based on this, it is urgent to develop a low-cost, easy-to-operate and polishing equipment that can improve the polishing effect. Utility Model Content

[0004] The utility model aims to provide a long tube inner wall polishing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a long tube inner wall polishing device, suitable for pipe fittings, comprising: a driving device, the driving device is connected to a rotating shaft, the rotating shaft is connected to a polishing wheel, the rotating shaft, the polishing wheel and the pipe fitting are coaxially arranged, the polishing wheel rotates with the rotating shaft to polish the inner wall of the pipe fitting, the rotating shaft sleeve is provided with a coaxially arranged extension tube, and the extension tube is rotatably connected to the polishing wheel.

[0006] Preferably, one end of the extension tube is connected to a bearing, and the extension tube is rotatably connected to the polishing wheel via the bearing.

[0007] Preferably, a support seat is fixedly mounted on the other end of the extension tube, and the support seat is connected to the support plate.

[0008] Preferably, the support plate is connected to a bracket, and a pulley is provided at the bottom of the bracket.

[0009] Preferably, the pulley is connected to a slide rail.

[0010] Preferably, the slide rail is connected to a fixed plate.

[0011] Preferably, the driving device consists of a motor and a universal coupling.

[0012] Preferably, the output end of the motor is connected to a universal coupling.

[0013] Preferably, the universal coupling is fixedly connected to the rotating shaft.

[0014] Preferably, the pipe is connected to a fixing frame.

[0015] The long tube inner wall polishing device has the following beneficial effects:

[0016] The long tube inner wall polishing device adjusts the speed and pressure of the polishing wheel through a driving device, thereby effectively improving the smoothness of the inner wall of the tube, reducing costs and improving the polishing effect. The operator only needs to hold the extension tube and move it to adjust the position of the polishing wheel, thereby reducing the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a long tube inner wall polishing device provided in an embodiment of the present application in a starting state;

[0018] Figure 2 A schematic diagram of a long tube inner wall polishing device provided in an embodiment of the present application in a terminal state;

[0019] Figure 3 is a perspective view of the long tube inner wall polishing device in a final state;

[0020] Figure 4 The figure is a schematic diagram of the assembly of the bearing, polishing wheel, rotating shaft and extension tube;

[0021] Figure 5 This is a cross-sectional view of the bearing, polishing wheel, shaft and extension tube after assembly.

[0022] In the figure: 1. bracket; 4. pulley; 7. slide rail; 8. fixed plate; 9. mounting plate; 10. motor; 11. universal joint; 12. extension pipe; 13. support seat; 14. support plate; 15. bearing; 16. rotating shaft; 17. polishing wheel; 18. pipe fitting; 19. fixing frame. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 , Figure 4 As shown, the utility model provides a long tube inner wall polishing device, which is suitable for a pipe fitting 18, and the pipe fitting 18 is connected to a fixed frame 19. The long tube inner wall polishing device includes: a driving device, and the driving device is connected to a rotating shaft 16, wherein the driving device is composed of a motor 10 and a universal coupling 11, and the speed of the motor 10 is adjustable. The motor 10 is connected to a mounting plate 9 by bolts, and the output end of the motor 10 is connected to the universal coupling 11, and the universal coupling 11 is fixedly connected to the rotating shaft 16.

[0025] Specifically, Figure 2-Figure 5 As shown, the rotating shaft 16 is connected to the polishing wheel 17, and the rotating shaft 16, the polishing wheel 17 and the pipe 18 are coaxially arranged. The polishing wheel 17 rotates with the rotating shaft 16 to polish the inner wall of the pipe 18. The rotating shaft 16 is sleeved with a coaxially arranged extension tube 12, and the extension tube 12 is rotatably connected to the polishing wheel 17.

[0026] Furthermore, one end of the extension tube 12 is connected to the bearing 15, and the extension tube 12 is rotatably connected to the polishing wheel 17 through the bearing 15. The other end of the extension tube 12 is fixedly installed with a support seat 13, and the support seat 13 is connected to the support plate 14. The support seat 13 is fixed to the support plate 14 by bolts, and the support plate 14 is fixed to the bracket 1 by bolts, and the mounting plate 9 is also fixed to the bracket 1.

[0027] like Figure 1-Figure 3 As shown, a pulley 4 is provided at the bottom of the bracket 1, the pulley 4 is connected to the slide rail 7, the slide rail 7 and the fixing frame 19 do not interfere with each other, the slide rail 7 is connected to the fixing plate 8, and the slide rail 7 is fixed in the workshop by the fixing plate 8 and bolts.

[0028] In this embodiment, the pipe 18 is placed on the fixing frame 19 by a fixture. When the pipe 18 is polished, in the initial state ( Figure 1 As shown), the motor 10 is turned on, the motor 10 drives the shaft 16 to rotate, the shaft 16 drives the polishing wheel 17 to rotate, and the polishing wheel 17 starts to polish the inner wall of the pipe 18. The operator holds the extension tube 12 to extend the polishing wheel 17 into the pipe 18, and adjusts the position of the extension tube 12 in the pipe 18 to the end state ( Figure 2As shown), at this time, the pipe 18 is the fixed end, the polishing wheel 17, the rotating shaft 16, and the motor 10 are the movable ends, and the operator holds the extension tube 12 to make the polishing wheel 17 move back and forth on the inner wall of the pipe 18, so that the inner wall of the pipe 18 is polished by the polishing wheel 17.

[0029] It can be understood that by adjusting the speed of the motor 10 to adjust the speed and pressure of the polishing wheel 17, the smoothness of the inner wall of the pipe 18 can be effectively improved, the polishing effect can be improved, and the cost can be reduced compared to electrolytic polishing. In addition, the operator only needs to hold the extension tube 12 and move it to adjust the position of the polishing wheel 17. The entire polishing process can be semi-automated, which can reduce the difficulty of operation compared to mechanical polishing (using tools such as rotating brushes, grinding discs or polishing stones to remove the oxide layer and impurities on the inner wall of the pipe through physical friction).

[0030] In addition, the extension tube 12 is designed according to the length of the pipe fitting 18, making the equipment easier to maintain and upgrade. The extension tube 12 can make the device suitable for polishing the inner walls of pipe fittings 18 of different lengths. It has high economy and practicality, and can be used for polishing the inner walls of pharmaceutical and chemical stainless steel pipelines, especially for extended pipelines that cannot be polished by traditional mechanical polishing machines.

[0031] Working principle: Place the pipe fitting 18 on the fixed frame 19 through a clamp. When polishing the pipe fitting 18, turn on the motor 10, the motor 10 drives the rotating shaft 16 to rotate, the rotating shaft 16 drives the polishing wheel 17 to rotate, and the polishing wheel 17 starts to polish the inner wall of the pipe fitting 18. The operator holds the extension tube 12 to extend the polishing wheel 17 into the pipe fitting 18 and adjusts the position of the extension tube 12 in the pipe fitting 18. At this time, the pipe fitting 18 is the fixed end, and the polishing wheel 17, the rotating shaft 16, and the motor 10 are the movable ends. The operator holds the extension tube 12 to make the polishing wheel 17 move back and forth on the inner wall of the pipe fitting 18, so that the inner wall of the pipe fitting 18 is polished by the polishing wheel 17.

[0032] In summary, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A long tube inner wall polishing device, suitable for pipe fittings (18), characterized in that: include: A driving device, the driving device is connected to a rotating shaft (16), the rotating shaft (16) is connected to a polishing wheel (17), the rotating shaft (16), the polishing wheel (17) and the pipe (18) are coaxially arranged, and the polishing wheel (17) rotates with the rotating shaft (16) to polish the inner wall of the pipe (18); The rotating shaft (16) is sleeved with a coaxially arranged extension tube (12), and the extension tube (12) is rotatably connected to the polishing wheel (17).

2. A long tube inner wall polishing device according to claim 1, characterized in that: One end of the extension tube (12) is connected to a bearing (15), and the extension tube (12) and the polishing wheel (17) are rotatably connected via the bearing (15).

3. A long tube inner wall polishing device according to claim 2, characterized in that: A support seat (13) is fixedly mounted on the other end of the extension tube (12), and the support seat (13) is connected to a support plate (14).

4. A long tube inner wall polishing device according to claim 3, characterized in that: The support plate (14) is connected to the bracket (1), and a pulley (4) is provided at the bottom of the bracket (1).

5. A long tube inner wall polishing device according to claim 4, characterized in that: The pulley (4) is connected to the slide rail (7).

6. A long tube inner wall polishing device according to claim 5, characterized in that: The slide rail (7) is connected to the fixing plate (8).

7. The long tube inner wall polishing device according to claim 1, characterized in that: The driving device is composed of a motor (10) and a universal coupling (11).

8. A long tube inner wall polishing device according to claim 7, characterized in that: The output end of the motor (10) is connected to a universal coupling (11).

9. A long tube inner wall polishing device according to claim 8, characterized in that: The universal coupling (11) is fixedly connected to the rotating shaft (16).

10. The long tube inner wall polishing device according to claim 1, characterized in that: The pipe member (18) is connected to a fixing frame (19).

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