Shot blasting device for inner wall of tower drum

Abstract

The utility model provides a tower drum inner wall shot blasting device which comprises a truss, a conveyor is installed in the length direction of the truss, a sand collecting hopper capable of moving along the truss is arranged above the conveyor, and a shot blasting device for blasting sand upwards is installed in the center of the interior of the sand collecting hopper. A cover body used for moving in the length direction of the truss to cover the two ends of the shot blasting device is arranged in the sand collecting hopper, the cover body is connected with the inner wall of the sand collecting hopper through a guide rod, and the guide rod can move the cover body to cover the shot blasting device. According to the shot blasting device for the inner wall of the tower drum, when the inner walls of the edges of the two ends of the tower drum are subjected to shot blasting cleaning, the part, moved out of the tower drum, of the shot blasting device can be covered by moving the cover body through the guide rod, and the problem that shots sprayed outwards cannot fall back due to the fact that the part, moved out of the tower drum, of the upper end of the shot blasting device is not covered is solved.

Description

Technical Field

[0001] This application relates to shot blasting technology for the inner wall of towers, and more particularly to a shot blasting device for the inner wall of towers. Background Technology

[0002] The shot blasting device for the inner wall of the tower is an important piece of equipment for cleaning and removing rust from the inner wall of the tower and strengthening the surface of the castings.

[0003] During operation, the truss passes through the center of the tower, allowing the tower to rotate around its axis. The sand collection hopper moves along the truss. Simultaneously with the tower's rotation, shot is propelled through the shot blaster within the sand collection hopper, creating a circumferential cleaning and strengthening effect on the tower's inner wall. After shot blasting a section of the tower is complete, the sand collection hopper can be moved to change the shot blasting position along the tower. The shot, after being propelled by the shot blaster, is deflected by the inner wall of the tower and falls back down, being collected by the sand collection hopper.

[0004] Existing shot blasting systems for the inner wall of towers require moving one end of the shot blaster outside the tower's interior when blasting the edges at both ends of the tower, ensuring the tower's edge is fully within the shot blasting range. This results in the shot blaster's outlet edge being unprotected by the tower, causing some shot to escape outwards. This not only affects the plant environment and poses a safety hazard, but also leads to waste as some shot cannot fall back down. Utility Model Content

[0005] This application provides a shot blasting device for the inner wall of a tower, which solves the problem that when existing shot blasting devices for the inner wall of a tower blasting device blast the edges of both ends of the tower, the part of the shot blaster that moves out of the tower is not covered, resulting in some of the shot not falling back.

[0006] This application provides a shot blasting device for the inner wall of a tower, including a truss, a conveyor installed along the length of the truss, a sand collection hopper that can move along the truss above the conveyor, a shot blaster for upward sand blasting installed in the center of the sand collection hopper, and a cover for moving along the length of the truss to cover both ends of the shot blaster inside the sand collection hopper. The cover is connected to the inner wall of the sand collection hopper through a guide rod, and the guide rod can move the cover to cover the shot blaster.

[0007] Optionally, the two guide rods are respectively located on both sides of the cover's moving direction. The two sides of the cover are connected to the guide rods via sleeves. One sleeve is threadedly connected to the external thread on the guide rod, and the other sleeve is slidably connected to the guide rod. The guide rods are driven by servo motors.

[0008] Optionally, the guide rod is an electric push rod that can extend and retract along the direction of movement of the cover.

[0009] Optionally, the cover is an arc shape with the inner arc facing downward, and its two sides in the direction of movement are fixed with sidewalls for downward flow guidance.

[0010] Optionally, the cover is made of a retractable tarpaulin, with one end of the tarpaulin in the retractable direction fixed to the inner wall of the sand collecting hopper, and the other end moving via a guide rod to cover the end of the shot blaster.

[0011] Compared with the prior art, the beneficial effects of the shot blasting device for the inner wall of the tower provided in this application are:

[0012] When shot blasting the inner walls of the two ends of the tower, the part of the shot blaster that moves out of the tower can be covered by a cover moved by a guide rod, so as to avoid the problem that the shot blaster cannot fall back down because the part of the shot blaster that moves out of the tower is not covered. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a front view of a shot blasting device for the inner wall of a tower provided in an embodiment of this application;

[0015] Figure 2 A shot blasting device for the inner wall of a tower provided in an embodiment of this application Figure 1 Top view;

[0016] Figure 3 A cross-sectional view of the shot blasting device for the inner wall of a tower provided in an embodiment of this application, in use.

[0017] Figure 4 A top view of the use state of the shot blasting device for the inner wall of a tower provided in an embodiment of this application;

[0018] Figure 5 A schematic diagram of the tarpaulin structure of a shot blasting device for the inner wall of a tower provided in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures:

[0020] Truss 1; Conveyor 2; Sand collection bucket 3; Shot blaster 4; Guide rod 5; Sleeve 6; Cover 7; External thread 8; Servo motor 9; Side wall 10; Tarpaulin 11; Tower 12. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0022] like Figures 1-4 As shown, one embodiment of this application provides a shot blasting device for the inner wall of a tower, including a truss 1, a conveyor 2 installed along the length of the truss 1, a sand collection hopper 3 that can move along the truss 1 above the conveyor 2, a shot blaster 4 that sprays sand upwards installed in the center of the sand collection hopper 3, and a cover 7 for moving along the length of the truss 1 to cover both ends of the shot blaster 4 inside the sand collection hopper 3. The cover 7 is connected to the inner wall of the sand collection hopper 3 through a guide rod 5, and the guide rod 5 can move the cover 7 to cover the shot blaster 4.

[0023] In use, the truss 1 passes through the center of the tower 12, so that the sand collection hopper 3 is located inside the tower 12. The upper opening of the sand collection hopper 3 is in contact with the inner wall of the tower 12. The shot blaster 4 inside the sand collection hopper 3 sprays high-speed shot upwards to hit the inner wall of the tower 12, cleaning and strengthening the inner wall of the tower 12. At the same time, the shot falls back after being blocked by the inner wall of the tower 12. The falling shot and impurities are collected through the sand collection hopper 3 and then removed and recycled by the conveyor 2.

[0024] When shot blasting the inner walls of the two ends of the tower cylinder 12, it is necessary to move part of the sand collection hopper 3 and the shot blaster 4 out of the tower cylinder 12 so that the edge of the tower cylinder 12 is completely within the sandblasting range of the shot blaster 4. At this time, the part of the shot blaster 4 that is moved out of the tower cylinder 12 is covered by the cover 7.

[0025] In this embodiment, when shot blasting the inner walls of the two ends of the tower cylinder 12, the part of the shot blaster 4 that moves out of the tower cylinder 12 can be covered by the cover 7 moved by the guide rod 5, so as to avoid the problem that the part of the shot blaster 4 that moves out of the tower cylinder 12 is not covered, which would cause the shot that is sprayed outward to not fall back.

[0026] In one possible implementation, the two guide rods 5 are respectively disposed on both sides of the cover 7 in the direction of movement. The two sides of the cover 7 are connected to the guide rods 5 through sleeves 6. One sleeve 6 is threadedly connected to the external thread 8 on the guide rod 5, and the other sleeve 6 is slidably connected to the guide rod 5. The guide rods 5 are driven by servo motors 9 respectively.

[0027] The cover 7 is connected to two guide rods 5 via sleeves 6 on both sides. By rotating the guide rods 5 via the servo motor 9, the sleeves 6 connected to them can move the corresponding cover 7 to cover the upper end of the shot blaster 4.

[0028] In one possible implementation, the guide rod 5 is an electric push rod that can extend and retract along the moving direction of the cover 7.

[0029] The effect of driving the cover 7 to move and cover the shot blasting machine 4 can also be achieved by using an electric push rod.

[0030] In one possible implementation, the cover 7 is an arc shape with its inner arc facing downward, and its two sides in the direction of movement are fixed with sidewalls 10 for downward flow guidance.

[0031] The inner arc-shaped cover 7, together with the side wall 10, can better cover and guide the ejected projectiles, so that the ejected projectiles can fall into the sand collection hopper 3 for recycling.

[0032] like Figure 5 As shown, in one possible implementation, the cover 7 is made of a retractable tarpaulin 11, one end of which is fixed to the inner wall of the sand collecting hopper 3 in the retractable direction, and the other end is moved by the guide rod 5 to cover the end of the shot blaster 4.

[0033] The tarpaulin 11 can also cover the projectiles and cause them to fall back. The retractable tarpaulin 11 has a larger coverage area, and at the same time, it occupies less space when retracted, making high space utilization.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A shot blasting device for the inner wall of a tower, comprising a truss (1), a conveyor (2) installed along the length of the truss (1), a sand collection hopper (3) movable along the truss (1) above the conveyor (2), and a shot blasting device (4) for upward sand blasting installed at the center of the sand collection hopper (3), characterized in that: The sand collecting hopper (3) is provided with a cover (7) for moving along the length of the truss (1) to cover both ends of the shot blaster (4). The cover (7) is connected to the inner wall of the sand collecting hopper (3) through a guide rod (5). The guide rod (5) can move the cover (7) to cover the shot blaster (4).

2. The shot blasting device for the inner wall of a tower according to claim 1, characterized in that: The two guide rods (5) are respectively located on both sides of the moving direction of the cover (7). The two sides of the cover (7) are connected to the guide rods (5) through sleeves (6). One sleeve (6) is threadedly connected to the external thread (8) on the guide rod (5), and the other sleeve (6) is slidably connected to the guide rod (5). The guide rods (5) are driven by servo motors (9).

3. The shot blasting device for the inner wall of the tower according to claim 1, characterized in that: The guide rod (5) is an electric push rod that can extend and retract along the moving direction of the cover (7).

4. The shot blasting device for the inner wall of a tower according to any one of claims 1-3, characterized in that: The cover (7) is an arc shape with the inner arc facing downward, and side walls (10) for downward flow are fixed on both sides of its moving direction.

5. The shot blasting device for the inner wall of a tower according to claim 1, characterized in that: The cover (7) is made of a retractable tarpaulin (11). One end of the tarpaulin (11) in the retractable direction is fixed to the inner wall of the sand collecting hopper (3), and the other end is moved by the guide rod (5) to cover the end of the shot blaster (4).

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