Corrugated pipe inner wall polishing treatment equipment
By designing a bellows inner wall polishing equipment, and utilizing an electric push rod and a motor-driven grinding assembly to unfold the pleated structure, the problem of incomplete polishing of the bellows inner wall was solved, thus improving corrosion resistance and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-03
AI Technical Summary
Existing technologies are insufficient to effectively polish the wrinkled structure of the inner wall of bellows, leading to an increase in corrosion sources and affecting the corrosion resistance and service life of the bellows.
A bellows inner wall polishing device was designed. It uses an electric push rod and telescopic component to unfold the internal pleated structure of the bellows, and then uses a motor-driven grinding component to polish the inner wall, ensuring that all pleated areas are thoroughly polished.
The entire inner wall of the bellows was polished, reducing corrosion sources and improving the corrosion resistance and service life of the bellows.
Smart Images

Figure CN224073965U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polishing technology, specifically to a polishing device for the inner wall of a corrugated pipe. Background Technology
[0002] Polishing removes oxide scale, microburrs, and other defects that form on the inner wall of the bellows during manufacturing. These defects can easily become sources of corrosion, accelerating the corrosion of the bellows. Polishing creates a continuous, smooth surface on the inner wall, reducing the contact area between the corrosive medium and the metal substrate, lowering the probability of corrosion, improving the corrosion resistance of the bellows, and extending its service life.
[0003] During polishing, a rotating polishing wheel needs to be placed inside the bellows and brought into contact with the inner wall of the bellows for polishing. Although the operation is relatively simple, the bellows is flexible and its inner wall has a layered pleated structure, making it difficult to polish the inside of the folded pleats. Utility Model Content
[0004] The purpose of this invention is to provide a bellows inner wall polishing device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a bellows inner wall polishing device, comprising: a base, and further comprising: an electric push rod installed on one end of the top outer wall of the base, the top of the electric push rod piston rod being fitted with a top plate, and both ends of the top outer wall of the base having first sliding openings, the inner walls of the two first sliding openings being slidably connected to first sliders, and the tops of the two first sliders being fitted with first arc plates, both ends of the top outer wall of the top plate having second sliding openings, and the inner walls of the two second sliding openings being slidably connected to second sliders, the bottoms of the two second sliders being fitted with second arc plates, and a telescopic component connecting the first arc plates and the second arc plates located on the same vertical line, the tops of the two second sliders being fitted with limit components, and a grinding component being movably inserted into the top outer wall of the top plate, and a first motor being fitted on the top outer wall of the top plate, and a gear being fitted on the output shaft of the first motor.
[0006] The telescopic assembly includes a fixed frame, a lifting block slidably connected to the inner wall of the fixed frame, and a connecting plate installed on the outer wall of one side of the lifting block.
[0007] The bottom of the fixed frame is connected to the first arc-shaped plate, and the top of the connecting plate is connected to the second arc-shaped plate.
[0008] The limiting component includes a bending plate and a threaded rod screwed to the top of the bending plate.
[0009] The polishing assembly includes a rack, a T-shaped plate mounted on one side of the outer wall of the rack, a second motor mounted on the bottom of the rack, and a polishing wheel mounted on the bottom of the output shaft of the second motor.
[0010] The base is equipped with a positioning ring on its top outer wall, and guide posts are installed at both ends of the top outer wall of the base, with the top plate and guide posts forming a sliding fit.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This utility model discloses a bellows inner wall polishing device. First, the first and second arc plates limit the two ends of the bellows respectively. Then, an electric push rod drives the top of the bellows to rise, elongating the bellows and unfolding the internal pleated structure, which facilitates subsequent polishing. After the internal pleated structure of the bellows is unfolded, the first motor drives the gear to rotate, thereby pushing the polishing component to descend and extend into the bellows. During the descent, the polishing component can polish the inner wall of the bellows, ensuring that the inner wall of the pleated structure can also be polished. Attached Figure Description
[0013] Figure 1 This is an external structural view of the present invention;
[0014] Figure 2 This is a structural diagram of the base of this utility model;
[0015] Figure 3 This is a structural diagram of the telescopic component and the limiting component of this utility model;
[0016] Figure 4 This is a structural diagram of the grinding component of this utility model.
[0017] In the diagram: 1. Base; 2. Electric push rod; 3. Top plate; 4. First sliding port; 5. First slider; 6. First arc plate; 7. Second sliding port; 8. Second slider; 9. Second arc plate; 10. Telescopic assembly; 1001. Fixed frame; 1002. Lifting block; 1003. Connecting plate; 11. Limiting assembly; 1101. Bending plate; 1102. Threaded rod; 12. Grinding assembly; 1201. Rack; 1202. T-shaped plate; 1203. Second motor; 1204. Polishing wheel; 13. First motor; 14. Gear; 15. Guide column; 16. Positioning ring; 17. Corrugated pipe. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figure 1-4 This utility model provides a bellows inner wall polishing device, comprising: a base 1, and an electric push rod 2 installed on one end of the top outer wall of the base 1. A top plate 3 is installed on the top of the piston rod of the electric push rod 2. Both ends of the top outer wall of the base 1 have first sliding openings 4. The inner walls of the two first sliding openings 4 are slidably connected to first sliders 5. The tops of the two first sliders 5 are each equipped with a first arc plate 6. Both ends of the top outer wall of the top plate 3 have second sliding openings 7. The inner walls of the two second sliding openings 7 are slidably connected to second sliders 8. The bottoms of the two second sliders 8 are each equipped with second arc plates 9. A telescopic component 10 is connected between the first arc plate 6 and the second arc plate 9, which are located on the same vertical line. The tops of the two second sliders 8 are each equipped with a limit component 11. A polishing component 12 is movably inserted into the top outer wall of the top plate 3. A first motor 13 is installed on the top outer wall of the top plate 3. A gear 14 is installed on the output shaft of the first motor 13.
[0020] It should be noted that: the corrugated pipe 17 can be placed on the base 1, and the two first arc-shaped plates 6 can be slid together and pressed against the bottom ends of the corrugated pipe 17. The two first arc-shaped plates 6 move, and then the two second arc-shaped plates 9 are moved by the two telescopic components 10, so that the two second arc-shaped plates 9 move together and are locked at the top ends of the corrugated pipe 17. Then the two second sliders 8 are fixed by the two limiting components 11, thereby limiting the two second arc-shaped plates 9 and the two first arc-shaped plates 6. At this time, the top plate 3 can be raised by the electric push rod 2, which in turn raises the top of the corrugated pipe 17, stretching the corrugated pipe 17 and unfolding the internal pleated structure of the corrugated pipe 17, which is convenient for subsequent grinding. After the internal pleated structure of the corrugated pipe 17 is unfolded, the gear 14 can be rotated by the first motor 13, which in turn pushes the grinding component 12 to descend and extend into the corrugated pipe 17. During the descent, the grinding component 12 can grind the inner wall of the corrugated pipe 17, so that the inner wall of the pleated structure can also be ground.
[0021] In a preferred embodiment, the telescopic component 10 includes a fixed frame 1001, a lifting block 1002 slidably connected to the inner wall of the fixed frame 1001, and a connecting plate 1003 installed on the outer wall of one side of the lifting block 1002; the bottom of the fixed frame 1001 is connected to the first arc plate 6, and the top of the connecting plate 1003 is connected to the second arc plate 9.
[0022] It should be noted that the horizontal movement of the first arc plate 6 can drive the fixed frame 1001 to move, which in turn drives the lifting block 1002 and the connecting plate 1003 to move, which in turn drives the second arc plate 9 to move. During the lifting and lowering process, the second arc plate 9 can drive the lifting block 1002 and the connecting plate 1003 to lift and lower without affecting the fixed frame 1001.
[0023] In a preferred embodiment, the limiting component 11 includes a bending plate 1101 and a threaded rod 1102 screwed to the top of the bending plate 1101.
[0024] It should be noted here that the rotatable threaded rod 1102 presses its bottom against the top plate 3, thereby fixing the second slider 8 and then fixing the second arc-shaped plate 9.
[0025] In a preferred embodiment, the polishing assembly 12 includes a rack 1201, a T-shaped plate 1202 mounted on one side of the outer wall of the rack 1201, a second motor 1203 mounted on the bottom of the rack 1201, and a polishing wheel 1204 mounted on the bottom of the output shaft of the second motor 1203.
[0026] It should be noted that: the first motor 13 drives the gear 14 to rotate, which in turn pushes the rack 1201 to descend, so that the polishing wheel 1204 enters the bellows 17. The outer polishing blades of the polishing wheel 1204 contact the inner wall of the bellows 17. At the same time, the second motor 1203 drives the polishing wheel 1204 to rotate, which can polish the inner wall of the bellows 17.
[0027] In a preferred embodiment, a positioning ring 16 is installed on the top outer wall of the base 1, and guide posts 15 are installed at both ends of the top outer wall of the base 1, with the top plate 3 and the guide posts 15 forming a sliding fit.
[0028] It should be noted that the positioning ring 16 facilitates the accurate placement of the bellows 17 on the base 1, and the guide column 15 makes the up-and-down movement of the top plate 3 more stable.
[0029] Working principle: The corrugated pipe 17 can be placed on the base 1. The two first arc plates 6 are slid together and pressed against the bottom ends of the corrugated pipe 17. The two first arc plates 6 move, which in turn drives the two second arc plates 9 to move through the two telescopic components 10. The two second arc plates 9 move together and are locked at the top ends of the corrugated pipe 17. (The horizontal movement of the first arc plates 6 can drive the fixed frame 1001 to move, which in turn drives the lifting block 1002 and the connecting plate 1003 to move, which in turn drives the second arc plates 9 to move. During the lifting and lowering process of the second arc plates 9, the lifting block 1002 and the connecting plate 1003 can be lifted and lowered without affecting the fixed frame 1001.)
[0030] Then, the two second sliders 8 are fixed by two limiting components 11 (rotatable threaded rod 1102, so that the bottom of the threaded rod 1102 presses on the top plate 3, fixing the second sliders 8, and thus fixing the second arc plate 9), thereby limiting the two second arc plates 9 and the two first arc plates 6. At this time, the top plate 3 can be raised by the electric push rod 2, which in turn raises the top of the bellows 17, stretching the bellows 17 and unfolding the internal pleated structure of the bellows 17, facilitating subsequent grinding. After the internal pleated structure of the bellows 17 is unfolded, it can be... The first motor 13 drives the gear 14 to rotate, which in turn pushes the polishing assembly 12 to descend and extend into the bellows 17. During the descent, the polishing assembly 12 can polish the inner wall of the bellows 17 (the first motor 13 drives the gear 14 to rotate, which in turn pushes the rack 1201 to descend, so that the polishing wheel 1204 enters the bellows 17, and the outer polishing blades of the polishing wheel 1204 contact the inner wall of the bellows 17. At the same time, the second motor 1203 drives the polishing wheel 1204 to rotate, which can polish the inner wall of the bellows 17), so that the inner wall of the pleated structure can also be polished.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A bellows inner wall polishing device, comprising: Base (1); The invention is characterized by further comprising: an electric push rod (2) installed on one end of the top outer wall of the base (1), the top of the piston rod of the electric push rod (2) is equipped with a top plate (3), and both ends of the top outer wall of the base (1) are provided with first sliding openings (4), the inner walls of the two first sliding openings (4) are slidably connected with first sliders (5), and the tops of the two first sliders (5) are provided with first arc plates (6), both ends of the top outer wall of the top plate (3) are provided with second sliding openings (7), and the inner walls of the two second sliding openings (7) are slidably connected with second sliders (8), the bottoms of the two second sliders (8) are provided with second arc plates (9), and a telescopic component (10) is connected between the first arc plate (6) and the second arc plate (9) located on the same vertical line, the tops of the two second sliders (8) are provided with limit components (11), and a grinding component (12) is movably inserted into the top outer wall of the top plate (3), the top outer wall of the top plate (3) is provided with a first motor (13), and the output shaft of the first motor (13) is provided with a gear (14).
2. The bellows inner wall polishing equipment according to claim 1, characterized in that: The telescopic component (10) includes a fixed frame (1001), a lifting block (1002) slidably connected to the inner wall of the fixed frame (1001), and a connecting plate (1003) installed on the outer wall of one side of the lifting block (1002).
3. The bellows inner wall polishing equipment according to claim 2, characterized in that: The bottom of the fixed frame (1001) is connected to the first arc plate (6), and the top of the connecting plate (1003) is connected to the second arc plate (9).
4. The bellows inner wall polishing equipment according to claim 1, characterized in that: The limiting component (11) includes a bending plate (1101) and a threaded rod (1102) screwed to the top of the bending plate (1101).
5. The bellows inner wall polishing equipment according to claim 1, characterized in that: The polishing assembly (12) includes a rack (1201), a T-shaped plate (1202) mounted on the outer wall of one side of the rack (1201), a second motor (1203) mounted on the bottom of the rack (1201), and a polishing wheel (1204) mounted on the bottom of the output shaft of the second motor (1203).
6. The bellows inner wall polishing equipment according to claim 1, characterized in that: The base (1) has a positioning ring (16) installed on the top outer wall, and guide posts (15) are installed at both ends of the top outer wall of the base (1). The top plate (3) and the guide posts (15) form a sliding fit.