A precision polishing device for corrosion-resistant stainless steel pipe fittings

Abstract

The present application relates to the technical field of stainless steel pipe processing, and specifically relates to a precision polishing device for corrosion-resistant stainless steel pipe fittings, which comprises a dragging main body, a first polishing main body, a polishing anticorrosion main body, a second polishing main body, a pushing main body and a steel pipe. The first polishing main body and the second polishing main body are distributed on the two sides of the polishing anticorrosion main body, and the first polishing main body and the second polishing main body are of the same structure. The dragging main body and the pushing main body are respectively distributed on the outer sides of the first polishing main body and the second polishing main body, and the dragging main body and the pushing main body are of the same structure. The steel pipe passes through the inside of the polishing anticorrosion main body uniformly. The first polishing main body comprises a first polishing part and a second polishing part, and the first polishing part and the second polishing part are symmetrically distributed and of the same structure. The present application can polish the steel pipe, and the polished steel pipe is more corrosion-resistant.

Description

Technical Field

[0001] This invention relates to the field of stainless steel pipe processing technology, specifically to a precision polishing device for corrosion-resistant stainless steel pipe fittings. Background Technology

[0002] Stainless steel pipe is a hollow, long, round steel material, widely used in industrial pipelines for petroleum, chemical, medical, food, light industry, and machinery, as well as in mechanical structural components. Additionally, it is lighter in weight while maintaining the same bending and torsional strength, making it widely used in manufacturing mechanical parts and engineering structures, and also commonly used in furniture and kitchenware. Stainless steel pipes require fine polishing during production to ensure a smooth, impermeable outer wall. Existing polishing equipment often produces poor results, hindering precision and leading to reduced corrosion resistance. Therefore, a new device is needed to address these issues. This device utilizes a fourth electric push rod to control the movement of a conical locking post, inserting it into the cavity at the pipe end. This increases the gap between two limiting slots. A third motor then rotates the conical locking post and the pipe, intermittently polishing the pipe for a more uniform and thorough finish. An air pump sprays anti-corrosion liquid from a storage tank onto the pipe's outer wall, which is then evenly distributed by a polishing wheel. The pipe is then further polished by a polishing belt in the first polishing unit. Finally, the polished pipe is pulled out by the dragging unit. This device effectively polishes steel pipes, resulting in improved corrosion resistance. Summary of the Invention

[0003] To address the problems in the prior art, the present invention provides a fine polishing device for corrosion-resistant stainless steel pipe fittings.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a fine polishing device for corrosion-resistant stainless steel pipe fittings, comprising a dragging body, a first polishing body, a polishing and anti-corrosion body, a second polishing body, a pushing body, and a steel pipe. The first polishing body and the second polishing body are distributed on both sides of the polishing and anti-corrosion body, and the first polishing body and the second polishing body have the same structure. The dragging body and the pushing body are respectively distributed on the outside of the first polishing body and the second polishing body, and the dragging body and the pushing body have the same structure. The steel pipe passes uniformly through the interior of the polishing and anti-corrosion body. The first polishing body includes a first polishing part and a second polishing part, which are symmetrically distributed and have the same structure.

[0005] Specifically, both the first polishing section and the second polishing section include a rotating drive shaft, a polishing belt, a first electric push rod, a fixed mounting plate, and a support bracket. The rotating drive shafts are symmetrically arranged and are rotatably engaged with the upper end of the support bracket. The polishing belts are uniformly rotated and arranged between the rotating drive shafts. The first electric push rods are symmetrically and fixedly mounted on the fixed mounting plate, and the driving end of the first electric push rod is fixedly connected to the bottom end of the support bracket.

[0006] Specifically, the polishing and anti-corrosion main body includes a first motor, a first fixed mounting bracket, a second motor, a polishing cloth wheel, a rotating adjustment arm, a rotating adjustment gear disc, a synchronous rotating belt, a second fixed mounting bracket, a supporting horizontal plate, and a synchronous rotating rod. The supporting horizontal plate is symmetrically arranged, and the rotating adjustment gear discs are symmetrically rotatably arranged at the middle of the outer end of the supporting horizontal plate. The rotating adjustment gear discs are meshed with each other. The synchronous rotating rod is rotatably engaged between the two ends of the supporting horizontal plate, and the synchronous rotating belt is rotatably connected between the end of the synchronous rotating rod and the outer end of the rotating adjustment gear disc. The rotating adjustment arm is fixedly connected to the inner side of the end of the synchronous rotating rod, and the polishing cloth wheel is rotatably connected to the rotating adjustment arm. Between the front ends of the arms, the drive end of the second motor is fixedly connected to the end of the polishing cloth wheel. The first fixed mounting bracket is fixedly connected between the outer ends of the support cross plate. The first motor is fixedly connected to the second fixed mounting bracket, and the drive end of the first motor is fixedly connected to the middle of the outer end of the rotating adjustment gear. Starting the first motor can drive the rotating adjustment gear on one side to rotate. Through the synchronous rotating belt and synchronous rotating rod, each rotating adjustment arm can rotate and swing synchronously, thereby adjusting the position of each polishing cloth wheel. This allows steel pipes of different thicknesses to be fully polished by the polishing cloth wheel, and the dripping anti-corrosion liquid can be collected and treated through the set receiving tray.

[0007] Specifically, a storage tank is fixedly installed between the supporting horizontal plates located above, an air pump is fixedly installed at the upper end of the storage tank, and nozzles are uniformly fixedly connected to the bottom end of the storage tank.

[0008] Specifically, the pushing body includes a second electric push rod, a limiting frame, a sliding plate, a limiting slot, a supporting limiting plate, a sliding adjusting plate, and a third electric push rod. The sliding adjusting plates are symmetrically arranged and slidably engaged with the limiting frame. The sliding plate is fixedly connected to the middle of the outer end of the sliding adjusting plate and slidably engaged with the limiting frame. The third electric push rod is uniformly fixedly installed on the sliding adjusting plate. The supporting limiting plate is fixedly connected to the front end of the third electric push rod. The limiting slots are uniformly formed on the supporting limiting plate.

[0009] Specifically, the polishing belt in the second polishing body is a diamond abrasive belt.

[0010] Specifically, the polishing belt in the first polishing body is a nylon polishing cloth belt.

[0011] Specifically, the steel pipe is adapted to the limiting slot.

[0012] Specifically, a receiving tray is fixedly installed between the supporting cross plates located below.

[0013] Specifically, L-shaped support brackets are uniformly fixedly connected to the outer end of the support limiting plate located below. A third motor is fixedly installed on the L-shaped support bracket by bolts. A fourth electric push rod is fixedly connected to the front end of the third motor. A conical locking column is fixedly connected to the front end of the fourth electric push rod. The fourth electric push rod can control the forward and backward movement of the conical locking column, which is set in a conical shape, so that the conical locking column is inserted into the cavity at the end of the steel pipe. Then, the gap between the two limiting slots is increased by a specified space. The third motor can drive the conical locking column and the steel pipe to rotate, so that the steel pipe moves intermittently during the movement to perform rotational polishing, making the fine polishing more uniform and thorough.

[0014] The beneficial effects of this invention are:

[0015] 1. The third electric push rod in the main body of this invention enables the symmetrically distributed support limiting plates to clamp and limit the steel pipes using limiting slots. Then, the second electric push rod is activated to move the support limiting plates, allowing each steel pipe to move and insert into the polishing and anti-corrosion main body. Then, the rotating polishing cloth wheels in the polishing and anti-corrosion main body polish and spray the exterior of the steel pipes. As the steel pipe passes through the polishing and anti-corrosion main body, the air pump is activated to spray the anti-corrosion liquid stored in the storage tank onto the outer wall of the steel pipe through nozzles, and the polishing cloth wheels distribute the polishing evenly. Then, the steel pipe is polished again by the polishing belt in the first polishing main body. Finally, the polished steel pipe is pulled out by the dragging main body, so that this equipment can polish the steel pipes, and the polished steel pipes are more corrosion resistant.

[0016] II. This invention enables the rotation of a rotating adjustment gear disc on one side by starting the first electric motor. A synchronous rotating belt and synchronous rotating rod allow each rotating adjustment arm to rotate and swing synchronously, adjusting the position of each polishing cloth wheel. This ensures that steel pipes of different thicknesses can be thoroughly polished by the polishing cloth wheels. A receiving plate collects and treats any dripping anti-corrosion liquid. A third electric push rod controls the forward and backward movement of a conical locking post, inserting it into the cavity at the end of the steel pipe. This increases the gap between the two limiting slots by a specified amount. The third electric motor then drives the conical locking post and the steel pipe to rotate, causing the steel pipe to move intermittently during the rotational polishing process, resulting in more uniform and thorough fine polishing. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 This is a side view of the three-dimensional structure of the main body in this invention;

[0020] Figure 3 This is a schematic diagram of the two sides of the polishing and anti-corrosion main body in this invention;

[0021] Figure 4 This is a schematic diagram of the first polishing main body structure in this invention;

[0022] Figure 5 This is a schematic diagram of the structure of the first polishing part in this invention;

[0023] Figure 6 This is a schematic diagram of the polishing and corrosion protection main structure in this invention;

[0024] Figure 7 This is a schematic diagram of the internal structure of the polishing and anti-corrosion main body in this invention;

[0025] Figure 8 This is a schematic diagram of the push-in main structure in this invention;

[0026] Figure 9 This is a schematic diagram of the bottom structure of the support limiting plate in this invention;

[0027] Figure 10 This is a schematic diagram of the outer structure of the limiting frame in this invention.

[0028] In the diagram: 1-Drag main body, 2-First polishing main body, 3-Polishing and anti-corrosion main body, 4-Second polishing main body, 5-Pushing main body, 6-Steel pipe, 7-First polishing section, 8-Second polishing section, 9-Rotation drive shaft, 10-Polishing belt, 11-First electric push rod, 12-Fixed mounting plate, 13-Support bracket, 14-Air pump, 15-First electric motor, 16-First fixed mounting bracket, 17-Nozzle, 18-Second electric motor, 19-Polishing cloth wheel, 20-Rotation adjustment 21-Arm, 22-Rotating adjusting gear plate, 23-Synchronous rotating belt, 24-Second fixed mounting bracket, 25-Synchronous rotating rod, 26-Storage tank, 27-Receiving tray, 28-Second electric push rod, 29-Limiting frame, 30-Sliding plate, 31-Limiting slot, 32-Supporting limiting plate, 33-Sliding adjusting plate, 34-Third electric push rod, 35-Conical locking column, 36-Fourth electric push rod, 37-Third motor, 38-L-shaped support bracket. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] The invention will be further described below with reference to the accompanying drawings. Example

[0031] like Figure 1-4As shown, a fine polishing device for corrosion-resistant stainless steel pipe fittings according to the present invention includes a dragging body 1, a first polishing body 2, a polishing and anti-corrosion body 3, a second polishing body 4, a pushing body 5, and a steel pipe 6. The first polishing body 2 and the second polishing body 4 are distributed on both sides of the polishing and anti-corrosion body 3, and the first polishing body 2 and the second polishing body 4 have the same structure. The dragging body 1 and the pushing body 5 are respectively distributed on the outside of the first polishing body 2 and the second polishing body 4, and the dragging body 1 and the pushing body 5 have the same structure. The steel pipe 6 passes uniformly through the interior of the polishing and anti-corrosion body 3. The first polishing body 2 includes a first polishing part 7 and a second polishing part 8, which are symmetrically distributed and have the same structure. Each steel pipe 6 is inserted into the pushing body 5, and the third electric motor in the pushing body 5 is activated. The push rod 34 allows the symmetrically distributed support limiting plates 32 to clamp and limit the steel pipes 6 using the limiting slots 31. Then, the second electric push rod 28 is activated to move the support limiting plates 32, allowing each steel pipe 6 to move and insert into the polishing and anti-corrosion body 3. Then, the polishing cloth wheels 19 rotating in the polishing and anti-corrosion body 3 polish and spray the exterior of the steel pipes 6. When the steel pipes 6 pass through the polishing and anti-corrosion body 3, the air pump 14 is activated to spray the anti-corrosion liquid stored in the storage tank 26 onto the outer wall of the steel pipes 6 through the nozzles 17, and the polishing cloth wheels 19 distribute and polish evenly. Then, the steel pipes 6 are polished again by the polishing belt 10 in the first polishing body 2. Finally, the polished steel pipes 6 are pulled out by the dragging body 1, so that the equipment can polish the steel pipes 6, and the polished steel pipes 6 are more corrosion resistant.

[0032] like Figure 5 As shown, both the first polishing section 7 and the second polishing section 8 include a rotating drive shaft 9, a polishing belt 10, a first electric push rod 11, a fixed mounting plate 12, and a support bracket 13. The rotating drive shafts 9 are symmetrically arranged and are rotatably engaged with the upper end of the support bracket 13. The polishing belt 10 is evenly rotated between the rotating drive shafts 9. The first electric push rod 11 is symmetrically fixedly mounted on the fixed mounting plate 12, and the driving end of the first electric push rod 11 is fixedly connected to the bottom end of the support bracket 13. The rotating drive shafts 9 are driven to rotate by an externally provided drive motor, which enables the polishing belt 10 to rotate at high speed to complete the grinding and polishing process. Furthermore, the degree of grinding and polishing of the outer wall of the steel pipe 6 by the polishing belt 10 can be controlled by starting the first electric push rod 11.

[0033] like Figure 6 and Figure 7As shown, the polishing and anti-corrosion main body 3 includes a first motor 15, a first fixed mounting bracket 16, a second motor 18, a polishing cloth wheel 19, a rotating adjustment arm 20, a rotating adjustment gear 21, a synchronous rotating belt 22, a second fixed mounting bracket 23, a supporting horizontal plate 24, and a synchronous rotating rod 25. The supporting horizontal plate 24 is symmetrically arranged, and the rotating adjustment gear 21 is symmetrically rotatably arranged at the middle of the outer end of the supporting horizontal plate 24. The rotating adjustment gears 21 are meshed together. The synchronous rotating rod 25 is rotatably engaged between the two ends of the supporting horizontal plate 24, and the synchronous rotating belt 22 is rotatably connected between the end of the synchronous rotating rod 25 and the outer end of the rotating adjustment gear 21. The rotating adjustment arm 20 is fixedly connected to the inner side of the end of the synchronous rotating rod 25. The polishing cloth wheel 19 is rotatably connected to the front end of the rotating adjustment arm 20. The drive end of the second motor 18 is fixedly connected to the end of the polishing cloth wheel 19. The first fixed mounting bracket 16 is fixedly connected to the outer end of the supporting horizontal plate 24. The first motor 15 is fixedly connected to the second fixed mounting bracket 23, and the drive end of the first motor 15 is fixedly connected to the middle of the outer end of the rotating adjustment gear 21. Starting the first motor 15 can drive the rotating adjustment gear 21 on one side to rotate. Through the synchronous rotating belt 22 and the synchronous rotating rod 25, each rotating adjustment arm 20 can rotate and swing synchronously, so that the position of each polishing cloth wheel 19 can be adjusted, and steel pipes 6 of different thicknesses can be fully polished by the polishing cloth wheel 19.

[0034] A storage tank 26 is fixedly installed between the supporting horizontal plates 24 located above. An air pump 14 is fixedly installed at the upper end of the storage tank 26. Nozzles 17 are evenly fixedly connected to the bottom end of the storage tank 26. When the air pump 14 is started, the anti-corrosion liquid stored in the storage tank 26 can be sprayed from the nozzles 17 onto the outer wall of the steel pipe 6 and polished evenly by the polishing cloth wheel 19.

[0035] like Figure 8 and Figure 9 As shown, the pushing body 5 includes a second electric push rod 28, a limiting frame 29, a sliding clamping plate 30, a limiting groove 31, a supporting limiting plate 32, a sliding adjusting plate 33, and a third electric push rod 34. The sliding adjusting plates 33 are symmetrically arranged and are slidably engaged with the limiting frame 29. The sliding clamping plate 30 is fixedly connected to the middle of the outer end of the sliding adjusting plate 33 and is slidably engaged with the limiting frame 29. The third electric push rod 34 is evenly fixedly installed on the sliding adjusting plate 33. The supporting limiting plate 32 is fixedly connected to the front end of the third electric push rod 34. The limiting groove 31 is evenly opened on the supporting limiting plate 32. Activating the third electric push rod 34 allows the symmetrically distributed supporting limiting plates 32 to clamp and limit the steel pipes 6 using the limiting groove 31. Activating the second electric push rod 28 moves the supporting limiting plate 32, allowing each steel pipe 6 to move and insert into the polishing and anti-corrosion body 3.

[0036] The polishing belt 10 in the second polishing body 4 is a diamond abrasive belt, which can perform thorough polishing.

[0037] The polishing belt 10 in the first polishing body 2 is a nylon polishing cloth belt, which can play a role in further assisting the polishing process.

[0038] The steel pipe 6 is adapted to the limiting slot 31, and the steel pipe 6 can be limited and clamped by the limiting slot 31.

[0039] A receiving plate 27 is fixedly installed between the supporting horizontal plates 24 located below, and the dripping anti-corrosion liquid can be collected and treated through the receiving plate 27.

[0040] In this embodiment, each steel pipe 6 is inserted into the pushing body 5. By activating the third electric push rod 34 in the pushing body 5, the symmetrically distributed support limiting plates 32 can clamp and limit the steel pipe 6 using the limiting slots 31. Then, the second electric push rod 28 is activated to move the support limiting plates 32, allowing each steel pipe 6 to move and be inserted into the polishing and anti-corrosion body 3. Then, the polishing cloth wheels 19 rotating in the polishing and anti-corrosion body 3 polish and grind the outside of the steel pipe 6 and spray it. When the steel pipe 6 passes through the polishing and anti-corrosion body 3, the air pump 14 is activated to spray the anti-corrosion liquid stored in the storage tank 26 onto the outer wall of the steel pipe 6 through the nozzle 17, and the polishing cloth wheels 19 distribute and polish it evenly. Then, the steel pipe 6 is polished again by the polishing belt 10 in the first polishing body 2. Finally, the polished steel pipe 6 is pulled out by the dragging body 1, so that this equipment can polish the steel pipe 6, and the polished steel pipe 6 is more corrosion resistant.

[0041] By starting the first motor 15, the rotating adjustment gear 21 on one side can be driven to rotate. Through the synchronous rotating belt 22 and the synchronous rotating rod 25, each rotating adjustment arm 20 can rotate and swing synchronously, thereby adjusting the position of each polishing cloth wheel 19. This allows steel pipes 6 of different thicknesses to be fully polished by the polishing cloth wheel 19. Furthermore, the dripping anti-corrosion liquid can be collected and treated by the set receiving plate 27. Example

[0042] Based on Example 1, such as Figure 10 As shown, L-shaped support brackets 38 are uniformly fixedly connected to the outer end of the support limiting plate 32 located below, and a third motor 37 is fixedly installed on the L-shaped support bracket 38 by bolts. A fourth electric push rod 36 is fixedly connected to the front end of the third motor 37, and a conical locking post 35 is fixedly connected to the front end of the fourth electric push rod 36.

[0043] In implementing this embodiment, the fourth electric push rod 36 can control the forward and backward movement of the conical locking post 35, which is set in a conical shape, so that the conical locking post 35 is inserted into the cavity at the end of the steel pipe 6, and then the gap between the two limiting slots 31 is increased by a specified space. The third electric motor 37 can drive the conical locking post 35 and the steel pipe 6 to rotate, so that the steel pipe 6 moves intermittently during the movement to perform rotational polishing, making the fine polishing more uniform and thorough.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision polishing device for corrosion-resistant stainless steel pipe fittings, characterized in that: The assembly includes a dragging body (1), a first polishing body (2), a polishing and anti-corrosion body (3), a second polishing body (4), a pushing body (5), and a steel pipe (6). The first polishing body (2) and the second polishing body (4) are distributed on both sides of the polishing and anti-corrosion body (3), and the first polishing body (2) and the second polishing body (4) have the same structure. The dragging body (1) and the pushing body (5) are respectively distributed on the outside of the first polishing body (2) and the second polishing body (4), and the dragging body (1) and the pushing body (5) have the same structure. The steel pipe (6) passes evenly through the interior of the polishing and anti-corrosion body (3). The first polishing body (2) includes a first polishing part (7) and a second polishing part (8). The first polishing part (7) and the second polishing part (8) are symmetrically distributed, and the first polishing part (7) and the second polishing part (8) have the same structure. Both the first polishing section (7) and the second polishing section (8) include a rotating drive shaft (9), a polishing belt (10), a first electric push rod (11), a fixed mounting plate (12), and a support bracket (13). The two sets of rotating drive shafts (9) are symmetrically arranged, and the rotating drive shafts (9) are rotatably engaged with the upper end of the support bracket (13). The polishing belt (10) is uniformly rotated between the two sets of rotating drive shafts (9). The first electric push rod (11) is symmetrically fixedly mounted on the fixed mounting plate (12), and the driving end of the first electric push rod (11) is fixedly connected to the bottom end of the support bracket (13). The polishing and anti-corrosion main body (3) includes a first motor (15), a first fixed mounting bracket (16), a second motor (18), a polishing cloth wheel (19), a rotating adjustment arm (20), a rotating adjustment gear disc (21), a synchronous rotating belt (22), a second fixed mounting bracket (23), a support horizontal plate (24), and a synchronous rotating rod (25). Two pairs of support horizontal plates (24) are symmetrically arranged, and four pairs of rotating adjustment gear discs (21) are symmetrically rotated and arranged at the middle of the outer end of each support horizontal plate (24). Adjacent rotating adjustment gear discs (21) are meshed and connected. The synchronous rotating rod (25) is rotatably engaged between the two ends of the support horizontal plate (24), and the synchronous rotating belt (22) is rotatably connected. Between the end of the synchronous rotating rod (25) and the outer end of the rotating adjusting gear (21), a pair of rotating adjusting arms (20) are respectively fixedly connected to the inner sides of the two ends of the synchronous rotating rod (25). The polishing cloth wheel (19) is rotatably connected between the front ends of the pair of rotating adjusting arms (20). The driving end of the second motor (18) is fixedly connected to the end of the polishing cloth wheel (19). The first fixed mounting bracket (16) is fixedly connected to the outer end of the supporting horizontal plate (24). The first motor (15) is fixedly connected to the first fixed mounting bracket (16), and the driving end of the first motor (15) is fixedly connected to the middle of the outer end of the rotating adjusting gear (21).

2. The fine polishing device for corrosion-resistant stainless steel pipe fittings according to claim 1, characterized in that: A storage tank (26) is fixedly installed between a pair of support horizontal plates (24) located above. An air pump (14) is fixedly installed at the upper end of the storage tank (26), and nozzles (17) are evenly fixedly connected to the bottom end of the storage tank (26).

3. The fine polishing device for corrosion-resistant stainless steel pipe fittings according to claim 2, characterized in that: The pushing body (5) includes a second electric push rod (28), a limiting frame (29), a sliding plate (30), a limiting slot (31), a supporting limiting plate (32), a sliding adjustment plate (33), and a third electric push rod (34). A pair of sliding adjustment plates (33) are symmetrically arranged vertically, and the symmetrically arranged sliding adjustment plates (33) are slidably engaged with the limiting frame (29). The sliding plate (30) is fixedly connected to the middle of the outer end of the sliding adjustment plate (33), and the sliding plate (30) is slidably engaged with the limiting frame (29). The third electric push rod (34) is uniformly fixedly installed on the sliding adjustment plate (33). The supporting limiting plate (32) is fixedly connected to the front end of the third electric push rod (34). The limiting slot (31) is uniformly opened on the supporting limiting plate (32).

4. The fine polishing device for corrosion-resistant stainless steel pipe fittings according to claim 3, characterized in that: The polishing belt (10) in the second polishing body (4) is a diamond grinding belt.

5. The fine polishing device for corrosion-resistant stainless steel pipe fittings according to claim 4, characterized in that: The polishing belt (10) in the first polishing body (2) is a nylon polishing cloth belt.

6. The fine polishing device for corrosion-resistant stainless steel pipe fittings according to claim 5, characterized in that: The steel pipe (6) is adapted to the limiting groove (31).

7. The fine polishing device for corrosion-resistant stainless steel pipe fittings according to claim 6, characterized in that: A receiving tray (27) is fixedly installed between a pair of supporting cross plates (24) located below.

8. The fine polishing device for corrosion-resistant stainless steel pipe fittings according to claim 7, characterized in that: An L-shaped support bracket (38) is uniformly fixedly connected to the outer end of the support limiting plate (32) located below, and a third motor (37) is fixedly installed on the L-shaped support bracket (38) by bolts. A fourth electric push rod (36) is fixedly connected to the front end of the third motor (37), and a conical locking column (35) is fixedly connected to the front end of the fourth electric push rod (36).

Images