CN221659017U - Shot blasting rust removal device for pipe wall of steel pipe - Google Patents

Abstract

The utility model discloses a shot blasting rust removing device for a steel pipe wall, which belongs to the technical field of steel pipe rust removing devices and comprises a shot blasting assembly and a dust removing fan connected with the shot blasting assembly; the shot blasting assembly is used for performing shot blasting treatment on the inner wall of the steel pipe; the crawler is characterized by also comprising a crawler and a controller; the shot blasting assembly is arranged on the crawler; the controller is used for controlling the crawler to move circumferentially along the inner wall of the steel pipe. According to the utility model, the crawler capable of moving circumferentially along the inner wall of the steel pipe is arranged, and the shot blasting assembly is arranged on the crawler, so that the crawler can carry the shot blasting assembly to move circumferentially along the inner wall of the steel pipe when the shot blasting treatment is required to be carried out on the steel pipe, and the shot blasting treatment operation can be smoothly carried out even if the steel pipe cannot rotate. Because the frame is not required to be erected in the process of the shot blasting rust removal operation, and an operator is not required to manually perform the operation, the efficiency of the shot blasting rust removal treatment operation of the inner wall of the steel pipe can be improved.

Description

A shot blasting and rust removal device for steel pipe wall

Technical Field

The utility model relates to the technical field of steel pipe rust removal devices, in particular to a shot blasting rust removal device for a steel pipe wall.

Background Art

After the steel pipe is produced, the inner wall of the steel pipe is usually treated with anti-corrosion (such as spraying anti-corrosion coating), but a certain area (usually 150mm wide) of the inner wall near the pipe mouth is often left without anti-corrosion treatment. The benefits of this treatment are:

(1) During the process of laying pipelines, steel pipes need to be welded together, and the above treatment facilitates welding of steel pipes;

(2) During the welding process, the heat will be transferred to the inner wall of the steel pipe, and a certain area will be left on the inner wall near the pipe mouth to ensure that the heat will not be transferred to the anti-corrosion area, so as not to damage the existing anti-corrosion coating.

After the steel pipe is welded, the area on the inner wall near the pipe mouth still needs to be treated for corrosion resistance, and before spraying the anti-corrosion material, the above area needs to be treated for rust removal by shot blasting, so that the oxide layer in the above area is knocked off and the above area has a certain degree of roughness. However, the existing shot blasting treatment of the inner wall of the steel pipe is often performed manually through a sandblasting machine, and because the steel pipe has been welded and buried, the steel pipe cannot be rotated. Therefore, during the shot blasting and rust removal operation, a frame needs to be set up so that the operator can complete the shot blasting treatment of the inner wall of the steel pipe at 360 degrees. The operation efficiency is very low, and a large amount of dust is generated during the operation.

In addition, although the patent document with application number CN200910075324.0 discloses a self-propelled steel pipe inner wall shot blasting cleaning machine, the self-propelled steel pipe inner wall shot blasting cleaning machine cannot move circumferentially along the inner wall of the steel pipe. When the inner wall of the steel pipe is shot blasted, the steel pipe needs to be driven to rotate. Therefore, when the self-propelled steel pipe inner wall shot blasting cleaning machine is used to shot blast the welded and buried steel pipe, a frame still needs to be set up, and the working efficiency cannot be improved.

It can be seen that the existing technology still needs to be improved and enhanced.

Utility Model Content

In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a shot blasting and rust removal device for a steel pipe wall, aiming to solve the problem of low efficiency of shot blasting and rust removal on the inner wall of a steel pipe when the steel pipe cannot rotate.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A shot blasting and rust removal device for a steel pipe wall, comprising a shot blasting assembly and a dust removal fan connected to the shot blasting assembly; the shot blasting assembly is used to perform shot blasting on the inner wall of the steel pipe; and further comprising:

A crawler, the crawler being used for transporting the shot blasting assembly;

A controller is used to control the crawler to move circumferentially along the inner wall of the steel pipe.

Furthermore, two crawlers are provided; and the shot blasting assembly is provided between the two crawlers.

Furthermore, the crawler includes a vehicle body; and further includes:

Permanent magnets, which are respectively arranged at the front and rear sides of the vehicle body and are used to make the vehicle body adsorbed on the inner wall of the steel pipe;

The driving mechanism is electrically connected to the controller, and the driving mechanism is used to drive the vehicle body to perform a crawling action.

Furthermore, the shot blasting assembly comprises:

A shot storage box, the shot storage box is used to store steel shots, and the shot removal box is connected to the dust removal fan;

A shot blasting box, which is connected to a shot storage box and has a projectile opening at the bottom of the shot blasting box;

A shot blasting machine, wherein the shot blasting machine is connected to a shot blasting box, and the shot blasting machine is communicated with the shot blasting box;

An L-shaped shot return pipe is arranged at the connection between the shot blasting box and the shot storage box, and the L-shaped shot return pipe extends into the shot storage box.

Furthermore, the shot blasting and rust removal device for the steel pipe wall also includes:

Dust suction pipe; the two ends of the dust suction pipe are respectively connected to the pill storage box and the dust removal fan.

Furthermore, a filter is arranged in the pill storage box; the filter divides the pill storage box into a first chamber and a second chamber; the dust suction pipe is connected to the first chamber; and the L-shaped pill return pipe is arranged in the second chamber.

Furthermore, the shot blasting and rust removal device for the steel pipe wall also includes a height adjustment mechanism; the height adjustment mechanism is arranged on both sides of the shot storage box, and the height adjustment mechanism is used to adjust the height of the shot storage box.

Furthermore, the height adjustment mechanism is rotatably connected to the crawler.

Furthermore, the shot blasting and rust removal device for the steel pipe wall also includes two sets of rollers; the two sets of rollers can roll along the inner wall of the steel pipe at the same time and are connected to the shot blasting assembly.

Furthermore, a soft brush is arranged at the bottom of the shot blasting box around the ejection port.

Beneficial effects:

The utility model provides a shot blasting and rust removal device for a steel pipe wall. By arranging a crawler that can move circumferentially along the wall surface of the steel pipe, such as the inner wall, and arranging a shot blasting assembly on the crawler, when the steel pipe needs to be shot blasted and rust removed, the crawler can carry the shot blasting assembly and move circumferentially along the inner wall of the steel pipe, so that even if the steel pipe cannot rotate, the shot blasting and rust removal operation can be carried out smoothly. Since no rack needs to be set up during the shot blasting and rust removal operation, and no operator needs to perform the operation manually, the efficiency of the shot blasting and rust removal operation on the inner wall of the steel pipe can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a structural schematic diagram 1 of a shot blasting and rust removal device for a steel pipe wall provided by the utility model.

FIG. 2 is a second structural schematic diagram of the shot blasting and rust removal device for the steel pipe wall provided by the utility model.

FIG. 3 is an enlarged view of portion A in FIG. 2 .

FIG. 4 is a third structural schematic diagram of the shot blasting and rust removal device for the steel pipe wall provided by the utility model.

FIG. 5 is a schematic structural diagram of the shot blasting assembly.

FIG. 6 is a diagram showing the use status of the shot blasting and rust removal device for the steel pipe wall.

FIG. 7 is a schematic structural diagram of the height adjustment mechanism.

Reference numerals:

1-steel pipe; 2-shot blasting assembly; 21-shot storage box; 211-first chamber; 212-second chamber; 22-shot blasting box; 221-projectile port; 23-shot blasting machine; 24-L-shaped shot return pipe; 25-shot inlet pipe; 26-solenoid valve; 27-filter;

3-Soft brush;

4-crawler; 41-car body; 42-permanent magnet; 43-driving mechanism;

5-Dust suction pipe;

6-height adjustment mechanism; 61-bracket; 611-slideway; 62-sliding member; 63-screw rod; 64-guide rod;

7-Roller.

DETAILED DESCRIPTION

The utility model provides a shot blasting and rust removal device for a steel pipe wall. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means more than two.

As shown in Figures 1 and 6, the utility model provides a shot blasting and rust removal device for the wall of a steel pipe, comprising a shot blasting assembly 2 and a dust removal fan 3 connected to the shot blasting assembly 2; when the dust removal fan 3 is working, a negative pressure can be generated in the shot blasting assembly 2, so that after the steel shots are thrown on the inner wall of the steel pipe 1, they can enter the shot blasting assembly 2 again, so that the steel shots can be recycled; the working principle of the shot blasting assembly 2 can be the same as that of the existing shot blasting machine, and it can be used to shot blast the inner wall of the steel pipe 1; further, the shot blasting and rust removal device for the wall of the steel pipe also includes a crawler 4 and a controller; the shot blasting assembly 2 is arranged on the crawler 4; the controller is used to control the crawler 4 to move circumferentially along the inner wall of the steel pipe 1.

The utility model provides a crawler 4 that can move circumferentially along the inner wall of the steel pipe, and a shot blasting assembly 2 is provided on the crawler 4. When the inner wall of the steel pipe 1 needs to be shot blasted and derusted, the crawler 4 can carry the shot blasting assembly 2 and move circumferentially along the inner wall of the steel pipe 1. In this way, even if the steel pipe 1 cannot rotate, the shot blasting and derusting operation can be carried out smoothly. Since no rack needs to be set up during the shot blasting and derusting operation, and no operator needs to perform the operation manually, the efficiency of the shot blasting and derusting operation of the inner wall of the steel pipe can be improved.

As shown in FIG. 1 , in one embodiment, the crawler 4 can be remotely controlled and two of them are provided; the shot blasting assembly 2 is provided between the two crawlers 4, so that when the shot blasting assembly 2 is running, it can ensure that the steel shots are projected onto the inner wall of the steel pipe 1, thereby ensuring that the shot blasting and rust removal operation of the inner wall of the steel pipe can be carried out smoothly.

As shown in Figure 2, in one embodiment, the crawler 4 includes a body 41, a permanent magnet 42 and a driving mechanism 43; the permanent magnets 42 are respectively arranged on the front and rear sides of the body 41, and are used to make the body 41 adsorbed on the inner wall of the steel pipe 1; the driving mechanism 43 can be a servo motor and is electrically connected to the controller, and the driving mechanism 43 is used to drive the body 41 to perform a crawling action.

As shown in Figures 1 to 5, in one embodiment, the shot blasting assembly 2 includes a shot storage box 21, a shot blasting box 22, a shot blasting machine 23 and an L-shaped shot return pipe 24; the shot storage box 21 is used to store steel shots; the shot blasting box 22 is connected to the shot storage box 21, and a projectile port 221 is provided at the bottom of the shot blasting box 22; the shot blasting machine 23 is provided with an impeller (the impeller is driven by a motor) and is connected to the shot blasting box 22, and the shot blasting machine 23 is connected to the shot blasting box 22 through a shot inlet pipe 25; the L-shaped shot return pipe 24 is provided at the connection between the shot blasting box 22 and the shot storage box 21, and the L-shaped shot return pipe 24 extends into the shot storage box 21.

When the shot blasting assembly 2 is working, the steel shots in the shot storage box 21 enter the shot blaster 23 through the shot inlet pipe 25, and then the impeller throws the steel shots into the shot blasting box 22, and then they are ejected onto the inner wall of the steel pipe 1 through the ejection port 221 at the bottom of the shot blasting box 22; after the steel pipe 1 is ejected out of the shot blasting box 22 through the ejection port 221, under the action of the dust removal fan 3, the steel shots can enter the shot blasting box 22 through the ejection port 221, and then be sucked into the L-shaped shot return pipe 24, and the steel shots are transported to the shot storage box 21 through the L-shaped shot return pipe 24 for reuse.

In the present invention, the shot outlet of the L-shaped shot return pipe 24 faces the shot blaster, and its arrangement can ensure that after the steel pipe 1 is sucked into the shot storage box 21, the steel shots will not automatically fall out from the bottom of the shot storage box.

As shown in Figures 2 and 3, further, a solenoid valve 26 is provided on the shot inlet pipe 25. The solenoid valve 26 is electrically connected to the controller, so that the flow rate of the steel shot entering the ejector can be adjusted by controlling the opening amplitude of the solenoid valve 26, thereby ensuring the shot blasting and rust removal effect.

As shown in FIG. 5 , further, the shot blasting and rust removal device for the steel pipe wall further includes a dust suction pipe 5 ; both ends of the dust suction pipe 5 are respectively connected to the shot storage box 21 and the dust removal fan 3 , so as to ensure that the steel shots are circulated and utilized.

As shown in FIG5 , in one embodiment, a filter screen 27 is provided in the shot storage box 21; the filter screen 27 divides the shot storage box 21 into a first chamber 211 and a second chamber 212; the dust suction pipe 5 is connected to the first chamber 211; the L-shaped shot return pipe 24 is provided in the second chamber 212. The shot blasting box 22 is connected to the second chamber 212. In this embodiment, the filter screen 27 can block the steel shot sucked into the shot storage box 21, thereby preventing the steel shot from being sucked into the dust removal fan 3.

As shown in FIG. 6 and FIG. 7 , in one embodiment, the shot blasting and rust removal device for the steel pipe wall further includes a height adjustment mechanism 6; the height adjustment mechanism 6 is arranged on both sides of the shot storage box 21, and the height adjustment mechanism 6 is used to adjust the height of the shot storage box 21. Since the curvature of the steel pipe 1 is different when the inner diameter is different, the height adjustment mechanism 6 is set in this embodiment to adjust the distance between the shot blasting assembly 2 and the inner wall of the steel pipe, so that when the curvature of the steel pipe 1 changes, it can be ensured that the ejection port 221 at the bottom of the shot blaster 23 is close to the inner wall of the steel pipe 1.

Specifically, the height adjustment mechanism 6 includes:

A bracket 6161, wherein the bracket 6161 is rotatably connected to the crawler 4 (by means of a damping shaft);

A sliding member 62, wherein the sliding member 62 is slidably disposed on the bracket 61 (a slide groove 611 for sliding the sliding member 62 may be disposed on the bracket 61), and the sliding member 62 is connected to the pill storage box 21;

The screw rod 63 is vertically penetrated on the sliding member 62, and the lower end of the screw rod 63 is rotatably connected with the bracket 61, and the upper end of the screw rod 63 passes through the bracket 61 upward. By rotating the two screw rods 63, the sliding member 62 can be moved upward or downward on the bracket, thereby driving the shot storage box 21 (shot blasting assembly 2) to move up and down, and then the height of the shot blasting assembly 2 can be adjusted.

In addition, when the ejection port 221 is close to the inner wall of the steel pipe 1, the ejection port 221 is not directly facing the inner wall of the steel pipe 1. In this way, during the shot blasting and rust removal process, the shots are easily ejected to the outside of the shot blasting assembly 2. Therefore, in one embodiment, the height adjustment mechanism 6 is rotatably connected to the crawler 4, so that the angle between the shot blasting assembly 2 and the crawler 4 can be adjusted so that the ejection port 221 can face the inner wall of the steel pipe 1.

As shown in FIG4 , in one embodiment, the shot blasting and rust removal device for the steel pipe wall further includes two groups of rollers 7; each group of rollers can be composed of 1 to 2 rollers. The rollers 7 can roll along the inner wall of the steel pipe 1 at the same time and are connected to the shot blasting assembly 2. When the distance between the shot blasting assembly 2 and the inner wall of the steel pipe and the angle between the shot blasting assembly 2 and the crawler 4 are adjusted, the rollers 7 abut against the inner wall of the steel pipe 1, so that when the crawler 4 moves circumferentially along the inner wall of the steel pipe 1, the shot blasting assembly 2 can maintain a stable state, so that the shot blasting and rust removal operation can proceed smoothly.

As shown in Figures 4 and 5, in one embodiment, a soft brush 8 is provided around the ejection port 221 at the bottom of the shot blasting box 22. The soft brush 8 can connect the shot blasting box 22 and the inner wall of the steel pipe 1, so that during the shot blasting and rust removal operation, the steel shot is not easily ejected to the outside of the shot blasting assembly 2, and it can also ensure that the inside of the shot blasting assembly is in a negative pressure state. After the steel shot is ejected onto the inner wall of the steel pipe 1, the steel pipe 1 can be recovered into the shot storage box 21.

In summary, the utility model provides a device for shot blasting and rust removal of steel pipe walls. By setting a crawler that can move circumferentially along the inner wall of the steel pipe, and setting a shot blasting assembly on the crawler, when the steel pipe needs to be shot blasted and rust removed, the crawler can carry the shot blasting assembly and move circumferentially along the inner wall of the steel pipe. In this way, even if the steel pipe cannot rotate, the shot blasting and rust removal operation can be carried out smoothly. Since no scaffolding needs to be set up during the shot blasting and rust removal operation, and no manual operation is required by operators, the efficiency of the shot blasting and rust removal operation on the inner wall of the steel pipe can be improved.

It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the claims attached to the utility model.

Claims (10)

1. A shot blasting and rust removal device for a steel pipe wall, comprising a shot blasting assembly and a dust removal fan connected to the shot blasting assembly; the shot blasting assembly is used to perform shot blasting on the inner wall of the steel pipe; characterized in that it also includes: A crawler, the crawler being used for transporting the shot blasting assembly; A controller is used to control the crawler to move circumferentially along the inner wall of the steel pipe. 2. The shot blasting and rust removal device for the steel pipe wall according to claim 1 is characterized in that two crawlers are provided; and the shot blasting assembly is provided between the two crawlers. 3. The shot blasting and rust removal device for the steel pipe wall according to claim 2, characterized in that the crawler includes a vehicle body; and further includes: Permanent magnets, which are respectively arranged at the front and rear sides of the vehicle body and are used to make the vehicle body adsorbed on the inner wall of the steel pipe; The driving mechanism is electrically connected to the controller, and the driving mechanism is used to drive the vehicle body to perform a crawling action. 4. The shot blasting and rust removal device for the steel pipe wall according to claim 2, characterized in that the shot blasting assembly comprises: A shot storage box, the shot storage box is used to store steel shots, and the shot removal box is connected to the dust removal fan; A shot blasting box, which is connected to a shot storage box and has a projectile opening at the bottom of the shot blasting box; A shot blasting machine, wherein the shot blasting machine is connected to a shot blasting box, and the shot blasting machine is communicated with the shot blasting box; An L-shaped shot return pipe is arranged at the connection between the shot blasting box and the shot storage box, and the L-shaped shot return pipe extends into the shot storage box. 5. The shot blasting and rust removal device for the steel pipe wall according to claim 4 is characterized in that it also includes a dust suction pipe; the two ends of the dust suction pipe are respectively connected to the shot storage box and the dust removal fan. 6. The shot blasting and rust removal device for the steel pipe wall according to claim 5 is characterized in that a filter is arranged in the shot storage box; the filter divides the shot storage box into a first chamber and a second chamber; the dust suction pipe is connected to the first chamber; and the L-shaped shot return pipe is arranged in the second chamber. 7. The shot blasting and rust removal device for the steel pipe wall according to claim 4 is characterized in that it also includes a height adjustment mechanism; the height adjustment mechanism is arranged on both sides of the shot storage box, and the height adjustment mechanism is used to adjust the height of the shot storage box. 8. The shot blasting and rust removal device for the steel pipe wall according to claim 7, characterized in that the height adjustment mechanism is rotatably connected to the crawler. 9. The shot blasting and rust removal device for the steel pipe wall according to claim 7 is characterized in that it also includes two sets of rollers; the two sets of rollers can roll along the inner wall of the steel pipe at the same time and are connected to the shot blasting assembly. 10. The shot blasting and rust removal device for the steel pipe wall according to claim 4, characterized in that a soft brush is arranged around the ejection port at the bottom of the shot blasting box.