Shot blasting rust removal and rust prevention treatment equipment for inner wall of steel pipe

Abstract

The utility model discloses shot blasting and rust prevention treatment equipment for the inner wall of a steel pipe, and relates to the technical field of shot blasting and rust prevention for the inner wall of the steel pipe. Comprising a main body frame, one end of the main body frame is fixedly connected with an impeller head, and the side wall of the impeller head is fixedly connected with an anti-rust liquid sprayer. The multiple supporting frames move synchronously, so that when the multiple rotating wheels make contact with the inner walls of the steel pipes with different diameters, the main body frame is located in the dead center of the steel pipes all the time, and the distances between the shot blasting devices and the inner walls of the steel pipes are kept consistent when the shot blasting devices at the right end of the main body frame conduct shot blasting and rust removal on the inner walls of the steel pipes. And the shot blasting distances of the shot blasting devices are consistent, so that the acting force of shots shot out of the shot blasting devices on the inner wall of the steel pipe at the same speed is kept consistent, the shot blasting and rust removal uniformity of the inner wall of the steel pipe is further improved, and the probability of excessive rust removal or insufficient rust removal caused by different shot blasting force is reduced.

Description

A shot blasting and rust prevention device for the inner wall of steel pipes Technical Field

[0001] This utility model relates to the field of shot blasting for rust removal on the inner wall of steel pipes, specifically a shot blasting and rust prevention device for the inner wall of steel pipes. Background Technology

[0002] Steel pipes are widely used in petrochemical, construction, and transportation industries due to their excellent mechanical properties, good sealing performance, and convenient installation characteristics. However, during production, storage, and transportation, the inner wall of steel pipes is highly susceptible to oxidation reactions with oxygen and moisture in the air, forming a rust layer. Shot blasting removes rust and impurities from the inner wall by impacting with high-speed shot. Rust prevention treatment involves spraying an anti-corrosion coating to isolate the pipe from external corrosive media.

[0003] Traditional shot blasting equipment for steel pipe interiors suffers from difficulties in synchronizing the movement of multiple support frames when adjusting them for steel pipes of different sizes. These support frames are typically connected by independent bolts and threads, making it difficult to maintain consistent extension and contraction distances when adjusting multiple frames. This results in the shot blaster being centered on the steel pipe when all support frames are in contact with the inner wall, leading to inconsistent shot blasting intensity at different locations on the inner wall. Consequently, the uniformity of shot blasting is affected, increasing the probability of over- or under-blasting due to varying shot blasting intensities. Therefore, a new shot blasting and rust prevention system for steel pipe interiors is urgently needed to address these issues. Summary of the Invention

[0004] The purpose of this utility model is to provide a shot blasting and rust prevention equipment for the inner wall of steel pipes, so as to solve the problem mentioned in the background art that when the support frame is adjusted according to the steel pipe of different sizes, the multiple support frames are difficult to move synchronously, which affects the uniformity of shot blasting and rust removal on the inner wall of the steel pipe.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steel pipe inner wall shot blasting rust removal and rust prevention treatment equipment, including a main frame, a shot blaster fixedly connected to one end of the main frame, a rust-preventive liquid sprayer fixedly connected to the side wall of the shot blaster, a synchronous telescopic component provided inside the main frame, and a constraint component provided at one end of the main frame;

[0006] The synchronous telescopic assembly includes a main column, which is rotatably connected to the inner wall of the main frame. Two gear disks are fixedly connected to the surface of the main column. Multiple fixing plates are fixedly connected to both sides of the inner wall of the main frame. Fixing columns are fixedly connected to the side walls of the fixing plates. Spur gears are rotatably connected to the surface of the fixing columns, and the surface of the spur gears meshes with the surface of the gear disks. A support frame is slidably connected to the inner wall of the fixing plates. A mounting frame is fixedly connected to the surface of the support frame. A rotating wheel is rotatably connected to the inner wall of the mounting frame.

[0007] Preferably, the constraint assembly includes a constraint box, which is fixedly connected to one end of the main frame. The side wall of the constraint box has a movable hole. A constraint wheel is fixedly connected to the surface of the main column. A limit block is fixedly connected to the side wall of the main frame. A limit frame is slidably connected to the periphery of the limit block.

[0008] Preferably, the side wall of the support frame is provided with a limiting groove, the inner wall of the limiting groove is slidably connected to a limiting strip, and the side wall of the limiting strip is fixedly connected to the side wall of the fixing plate.

[0009] Preferably, a compression spring is fixedly connected to the side wall of the limiting block, and the other end of the compression spring is fixedly connected to the inner wall of the limiting frame.

[0010] Preferably, a pull column is fixedly connected to the side wall of the limiting frame, and the surface of the pull column is slidably connected to the inner wall of the movable hole.

[0011] Preferably, the side wall of the support frame is provided with multiple toothed grooves, and all of the multiple toothed grooves are meshed with the surface of the spur gear.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By using a synchronized telescopic assembly, multiple support frames move synchronously when the main column rotates. This synchronous movement ensures that the main frame remains centered on the steel pipes when the rotating wheels contact the inner walls of the pipes with different diameters. Consequently, the distance between the shot blaster and the inner wall of the steel pipe remains consistent during shot blasting for rust removal via the shot blaster at the right end of the main frame. This consistent blasting distance ensures that the projectiles fired from the shot blaster exert consistent force on the inner wall of the steel pipe at the same speed, thereby improving the uniformity of shot blasting for rust removal and reducing the probability of over- or under-blasting due to varying blasting forces. Attached Figure Description

[0014] Figure 1 is a three-dimensional structural diagram of this utility model;

[0015] Figure 2 is a partial cross-sectional view of the synchronous telescopic component of this utility model;

[0016] Figure 3 is a schematic diagram of the constraint component structure of this utility model;

[0017] Figure 4 is a schematic diagram of the limiting groove structure of this utility model.

[0018] In the diagram: 1. Main frame; 2. Shot blasting machine; 3. Rust inhibitor sprayer; 4. Synchronous telescopic assembly; 401. Main column; 402. Gear disk; 403. Fixing plate; 404. Fixing column; 405. Spur gear; 406. Support frame; 407. Gear groove; 408. Mounting frame; 409. Rotating wheel; 410. Limiting groove; 411. Limiting strip; 5. Constraint assembly; 501. Constraint box; 502. Movable hole; 503. Constraint wheel; 504. Limiting block; 505. Limiting frame; 506. Compression spring; 507. Pulling column. Detailed Implementation

[0019] 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.

[0020] Please refer to Figures 1-4. This utility model provides a shot blasting and rust prevention device for the inner wall of steel pipes, comprising a main frame 1. A shot blaster 2 is fixedly connected to one end of the main frame 1, and a rust-preventive liquid sprayer 3 is fixedly connected to the side wall of the shot blaster 2. A synchronous telescopic assembly 4 is installed inside the main frame 1, and a constraint assembly 5 is installed at one end of the main frame 1. The synchronous telescopic assembly 4 includes a main column 401, which is rotatably connected to the inner wall of the main frame 1. Two gear disks 402 are fixedly connected to the surface of the main column 401. Multiple fixing plates 403 are fixedly connected to both sides of the inner wall of the main frame 1. Fixing columns 404 are fixedly connected to the side walls of the fixing plates 403, and spur gears 405 are rotatably connected to the surface of the fixing columns 404. The surface of the spur gears 405 meshes with the surface of the gear disks 402. A support frame 406 is slidably connected to the inner wall of the fixing plates 403, and a mounting bracket 4 is fixedly connected to the surface of the support frame 406. 08. The inner wall of the mounting frame 408 is rotatably connected to a rotating wheel 409. Through the set synchronous telescopic component 4, when the main column 401 rotates, it drives two gear disks 402 to rotate synchronously. The rotation of the gear disks 402 drives multiple spur gears 405 to rotate synchronously. The synchronous rotation of multiple spur gears 405 ensures that when the rotating wheel 409 contacts the inner wall of steel pipes of different diameters, the main frame 1 is always located at the center of the steel pipe. This ensures that when the shot blaster 2 at the right end of the main frame 1 performs shot blasting to remove rust from the inner wall of the steel pipe, the distance between the shot blaster 2 and the inner wall of the steel pipe remains consistent. The consistent shot blasting distance of the shot blaster 2 ensures that the shot fired from inside the shot blaster 2 has a consistent force on the inner wall of the steel pipe at the same speed, thereby improving the uniformity of shot blasting to remove rust from the inner wall of the steel pipe. The shot blaster 2 and the rust inhibitor sprayer 3 are common shot blasting and rust inhibitor spraying components, which are existing technologies in this technology and will not be described in detail here.

[0021] Furthermore, the constraint component 5 includes a constraint box 501, which is fixedly connected to one end of the main frame 1. The side wall of the constraint box 501 has an movable hole 502. The surface of the main column 401 is fixedly connected to a constraint wheel 503. The side wall of the main frame 1 is fixedly connected to a limit block 504. The circumferential side of the limit block 504 is slidably connected to a limit frame 505. By setting the constraint component 5, it is easy to constrain the main column 401, prevent the main column 401 from rotating on its own, and improve the stability of the synchronous telescopic component 4 during use.

[0022] Furthermore, a limiting groove 410 is provided on the side wall of the support frame 406, and a limiting strip 411 is slidably connected to the inner wall of the limiting groove 410. The side wall of the limiting strip 411 is fixedly connected to the side wall of the fixing plate 403. By using the limiting groove 410 and the limiting strip 411 in cooperation, it is easy for the support frame 406 to move parallel to the fixing plate 403 when moving, thereby improving the moving stability of the support frame 406.

[0023] Furthermore, a compression spring 506 is fixedly connected to the side wall of the limiting block 504, and the other end of the compression spring 506 is fixedly connected to the inner wall of the limiting frame 505. The compression spring 506 facilitates pushing the limiting block 504, so that the limiting block 504 contacts the constraint wheel 503 in the initial state to limit the constraint wheel 503, thereby facilitating the initial state limitation of the main column 401.

[0024] Furthermore, a pull column 507 is fixedly connected to the side wall of the limit frame 505. The surface of the pull column 507 is slidably connected to the inner wall of the movable hole 502. By setting the pull column 507, it is easy to pull the limit frame 505, thereby improving the convenience of operation.

[0025] Furthermore, the side wall of the support frame 406 is provided with multiple toothed grooves 407, and the multiple toothed grooves 407 are meshed with the surface of the spur gear 405. The multiple toothed grooves 407 and the spur gear 405 cooperate with each other, so that the spur gear 405 rotates and drives the support frame 406 to move. When the spur gear 405 does not rotate, the support frame 406 remains stationary.

[0026] Working principle: During use, the constraint component 5 pulls the pulling column 507, thereby moving the limit frame 505 to release the limit frame 505 from the constraint wheel 503. Then, through the set synchronous telescopic component 4, when the main column 401 rotates, it drives the two gear disks 402 to rotate synchronously. The rotation of the gear disks 402 drives multiple spur gears 405 to rotate synchronously. The rotation of the multiple spur gears 405, through the interaction of the surface of the spur gears 405 and the multiple tooth grooves 407, drives multiple support frames 406 to move synchronously. This ensures that when multiple rotating wheels 409 contact the inner walls of steel pipes of different diameters, the main frame 1 is always located at the exact center of the steel pipe. This also ensures that when the shot blaster 2 at the right end of the main frame 1 performs shot blasting to remove rust from the inner wall of the steel pipe, the distance between the shot blaster 2 and the inner wall of the steel pipe remains consistent. The consistent blasting distance of the shot blaster 2 ensures that the projectiles ejected from inside the shot blaster 2 exert consistent force on the inner wall of the steel pipe at the same speed, thereby improving the uniformity of shot blasting to remove rust from the inner wall of the steel pipe and reducing the probability of over- or under-blasting due to different blasting forces.

[0027] 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 shot blasting and rust prevention device for the inner wall of steel pipes, comprising a main frame (1), characterized in that: A shot blasting device (2) is fixedly connected to one end of the main frame (1), and a rust-preventive sprayer (3) is fixedly connected to the side wall of the shot blasting device (2). A synchronous telescopic assembly (4) is provided inside the main frame (1), and a constraint assembly (5) is provided at one end of the main frame (1). The synchronous telescopic assembly (4) includes a main column (401), which is rotatably connected to the inner wall of the main frame (1). Two gear disks (402) are fixedly connected to the surface of the main column (401). The inner wall of the main frame (1) has two gear disks (402). Multiple fixing plates (403) are fixedly connected to each side. A fixing column (404) is fixedly connected to the side wall of the fixing plate (403). A spur gear (405) is rotatably connected to the surface of the fixing column (404). The surface of the spur gear (405) meshes with the surface of the gear disk (402). A support frame (406) is slidably connected to the inner wall of the fixing plate (403). A mounting frame (408) is fixedly connected to the surface of the support frame (406). A rotating wheel (409) is rotatably connected to the inner wall of the mounting frame (408).

2. The equipment for shot blasting and rust prevention of the inner wall of steel pipes according to claim 1, characterized in that: The constraint assembly (5) includes a constraint box (501), which is fixedly connected to one end of the main frame (1). The constraint box (501) has a movable hole (502) on its side wall. The main column (401) has a constraint wheel (503) fixedly connected to its surface. The main frame (1) has a limit block (504) fixedly connected to its side wall. The limit block (504) has a limit frame (505) slidably connected to its circumference.

3. The shot blasting and rust prevention equipment for the inner wall of steel pipes according to claim 1, characterized in that: The support frame (406) has a limiting groove (410) on its side wall, and a limiting strip (411) is slidably connected to the inner wall of the limiting groove (410). The side wall of the limiting strip (411) is fixedly connected to the side wall of the fixing plate (403).

4. The shot blasting and rust prevention equipment for the inner wall of steel pipes according to claim 2, characterized in that: A compression spring (506) is fixedly connected to the side wall of the limiting block (504), and the other end of the compression spring (506) is fixedly connected to the inner wall of the limiting frame (505).

5. The shot blasting and rust prevention equipment for the inner wall of steel pipes according to claim 2, characterized in that: The side wall of the limiting frame (505) is fixedly connected to a pulling column (507), and the surface of the pulling column (507) is slidably connected to the inner wall of the movable hole (502).

6. The shot blasting and rust prevention equipment for the inner wall of steel pipes according to claim 1, characterized in that: The side wall of the support frame (406) is provided with a plurality of toothed grooves (407), and the plurality of toothed grooves (407) are meshed with the surface of the spur gear (405).

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