A mechanical rust removal device for ship facades

Abstract

This invention discloses a mechanical rust removal device for ship facades, relating to the field of ship rust removal technology. It includes a rust removal hood with lifting lugs on both sides and a handle on the back. A sandblasting feed box is horizontally mounted on the top of the hood, and multiple high-pressure sandblasting units are located at the bottom of the feed box. The sandblasting ends of the high-pressure sandblasting units are arranged in a row inside the rust removal hood. Inside the rust removal hood, below the sandblasting ends, are arranged from top to bottom a grinding roller, a dust-generating roller, and a receiving plate. A sandblasting return mechanism is located on one side of the rust removal hood, with its inlet end connected to the outlet end of the receiving plate. The outlet end of the sandblasting return mechanism is connected to a sand collection tank, the bottom of which is connected to the sandblasting feed box, and a sand replenishment pipe is located on the top of the sand collection tank. A dust suction pipe is located on the back side of the rust removal hood. This invention has the function of recycling and reusing the abrasive material, without causing pollution to the surrounding environment.

Description

Technical Field

[0001] This invention belongs to the field of ship rust removal technology, specifically relating to a mechanical rust removal device for ship facades. Background Technology

[0002] Rust removal is particularly important in the ship repair industry and is an essential step before painting. Because the outer side of the hull is exposed for a long time, the degree of rust on its surface is greater than that inside the hull. Due to the height of the hull, rust removal on the outer side also presents certain challenges.

[0003] Traditional rust removal methods for ship hulls generally include manual rust removal, mechanical rust removal, chemical rust removal, and ultra-high pressure water rust removal. Mechanical rust removal includes electric rust removal and shot blasting. Among these methods, shot blasting is highly efficient, produces good rust removal quality, and is low in cost. However, because the exterior of the ship hull is an open space, the abrasive cannot be recycled. Furthermore, since operations on the exterior of the hull are generally conducted at heights, the dust generated after shot blasting can affect other operations, is difficult to clean, and causes serious pollution to the surrounding environment. Therefore, mechanical rust removal is generally not applicable to the exterior of the ship hull. To address this, we have designed a mechanical rust removal device for ship facades that can collect and recycle rust-removing abrasive. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies where sandblasting abrasives cannot be recycled, are difficult to clean, and cause serious environmental pollution. This invention proposes a mechanical rust removal device for ship facades. It features the ability to recover the sandblasted abrasives and sort and reuse the recovered abrasives without causing pollution to the surrounding environment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a mechanical rust removal device for ship facades, including a rust removal hood. The rust removal hood has lifting lugs on both sides and a handle on its back. A sandblasting feed box is horizontally positioned at the top of the rust removal hood, and multiple high-pressure sandblasting units are located at the bottom of the feed box. The sandblasting ends of the high-pressure sandblasting units are arranged in a row inside the rust removal hood. Inside the rust removal hood, below the sandblasting ends, from top to bottom, are arranged a grinding roller, a dust-generating roller, and a receiving plate. A power chamber is located on one side of the grinding roller and the dust-generating roller, and the power chamber contains a device for driving the grinding roller and the dust-generating roller in opposite directions. The rust removal hood has a rotating drive mechanism; a sandblasting return mechanism is provided on one side of the rust removal hood, the inlet end of the sandblasting return mechanism is connected to the outlet end of the receiving plate, the outlet end of the sandblasting return mechanism is connected to a sand collection tank, the bottom of the sand collection tank is connected to the sandblasting supply box, the top of the sand collection tank is provided with a sand replenishment pipe, the sand replenishment pipe is provided with a solenoid valve, the sand collection tank is provided with a level gauge, and the level gauge and the solenoid valve are connected to the PLC control; a dust suction pipe is provided on one side of the back of the rust removal hood, and the dust suction pipe is connected to the dust collection equipment through a dust exhaust hose.

[0007] Furthermore, the bottom of the sandblasting feed box is inclined so that the sand in the sandblasting feed box is distributed to each high-pressure sandblasting unit.

[0008] Furthermore, the high-pressure sandblasting unit includes a sand inlet pipe and a high-pressure airflow pipe. One end of the sand inlet pipe is connected to the sandblasting feed box, and the other end extends into the rust removal hood and is connected to a sandblasting pipe. One end of the sandblasting pipe is connected to the high-pressure airflow pipe, and the other end is connected to a spray nozzle through a ball joint. The rust removal hood is provided with a push-pull mechanism for the spray nozzle to swing left and right.

[0009] Furthermore, the ball joint consists of an inner ball fixed end and an outer ball movable end. The outer ball movable end is movably connected to the outside of the inner ball fixed end. The inner ball fixed end is fixedly connected to the sandblasting pipe, and the outer ball movable end is fixedly connected to the spray nozzle. The spray nozzle communicates with the sandblasting pipe.

[0010] Furthermore, the push-pull mechanism includes a telescopic motor, the output end of which is connected to a swing rod, and the other end of the swing rod is connected to the rust removal cover via a support base. The swing rod is provided with a crankshaft connected to each spray nozzle at the corresponding position of the spray nozzle.

[0011] Furthermore, the receiving plate is inclinedly arranged at the bottom of the rust removal hood, with its lower end corresponding to the feed end of the sandblasting return mechanism.

[0012] Furthermore, the drive mechanism includes a power motor and a first gear, a second gear, and a third gear that mesh with each other. The first gear is fixed at the output end of the power motor, and the second gear and the third gear are respectively disposed on the dust-generating roller and the grinding roller.

[0013] Furthermore, the sandblasting return mechanism includes a return pipe, a return feed pipe, and a return discharge pipe. The return feed pipe and the return discharge pipe are respectively connected to both ends of the return pipe. The return pipe is equipped with a spiral feeding plate adapted to its inner diameter. One end of the spiral feeding plate is equipped with a feeding motor for driving rotation. The return feed pipe is inclined upward and connected to the discharge port of the receiving plate. The return discharge pipe is inclined downward and connected to the sand collecting tank.

[0014] Furthermore, a U-shaped sealing ring is fixedly provided around the opening of the rust removal cover.

[0015] Furthermore, the rust removal cover is provided with track wheels on both sides, and an electromagnet is fixedly installed inside the track wheel. After the track wheel is in contact with the hull, the sealing ring is compressed to 1 / 3-1 / 3. The magnetic attraction surface of the electromagnet is on the side of the track wheel facing the opening of the rust removal cover, and a small gap is maintained between the electromagnet and the track wheel.

[0016] The mechanical rust removal device for ship facades proposed in this invention has the following advantages:

[0017] (1) This invention can be applied to sandblasting and rust removal on the outside of the ship hull. The rust removal process is completed inside the rust removal hood, which will not cause abrasive leakage or dust generation, and will not cause pollution to the surrounding environment. At the same time, it will not cause physical harm to workers.

[0018] (2) The present invention combines sandblasting and grinding to remove rust, and thoroughly and efficiently removes rust from the surface of the ship. After the grinding roller removes rust from the surface of the ship, sandblasting is used to remove rust from the surface of the ship more thoroughly. Since the grinding roller is located below the sandblasting roller, the abrasive of the sandblasting roller will fall on the grinding roller. With the assistance of the sandblasting abrasive, the rust removal efficiency of the grinding roller is increased.

[0019] (3) The present invention can raise dust on the rust removal abrasive by raising dust roller, separate large abrasive particles from the rust dust that has been ground off, and suck out the dust in the dust suction pipe through the dust suction pipe. The large abrasive particles are recycled through the sandblasting return mechanism, which can save the amount of sandblasting and also avoid the pollution of the abrasive to the environment. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the front structure of the present invention;

[0023] Figure 3 This is a side view of the structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the present invention from a side view;

[0025] Figure 5 This is a schematic diagram of the internal structure of the present invention viewed from the front;

[0026] Figure 6 This is a schematic diagram of the internal structure of the ball joint in this invention;

[0027] Figure 7 This is a schematic diagram of the rust removal hood inside the present invention for rust removal and sandblasting;

[0028] Figure 8 This is a schematic diagram of the material return mechanism of the sandblasting return system of the present invention;

[0029] The markings in the diagram are as follows: 1. Rust removal cover; 11. Lifting lug; 12. Handle; 13. Sealing ring; 2. Sandblasting feed box; 21. Sand inlet pipe; 22. Regulating valve; 23. Sand collection tank; 24. Sand replenishment pipe; 25. Solenoid valve; 26. Level gauge; 3. High-pressure airflow pipe; 31. Sandblasting pipe; 32. Spray nozzle; 33. Ball joint; 331. Inner ball fixed end; 332. Outer ball movable end; 4. Telescopic motor; 41. Swing. 42. Moving rod; 43. Support seat; 44. Crankshaft; 5. Power chamber; 55. Power motor; 56. First gear; 57. Second gear; 58. Third gear; 59. Grinding roller; 50. Dust-collecting roller; 61. Receiving plate; 72. Dust suction pipe; 73. Dust discharge hose; 80. Return pipe; 91. Spiral feed plate; 102. Feeding motor; 11. Return feed pipe; 12. Return discharge pipe; 13. Track wheel; 14. Electromagnet. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] The structural features of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] See Figure 1 and 3 A mechanical rust removal device for ship facades includes a rust removal cover 1. The rust removal cover 1 has lifting lugs 11 on both sides, allowing workers to suspend the entire device on the ship's outer wall. Workers can then perform rust removal on the ship's exterior using this suspended method. A handle 12 is located on the back of the rust removal cover 1, facilitating operation from the outside of the ship. A sandblasting supply box 2 is horizontally positioned at the top of the rust removal cover 1. Multiple high-pressure sandblasting units are located at the bottom of the sandblasting supply box 2, with their sandblasting ends arranged in a row inside the rust removal cover 1. The bottom of the sandblasting supply box 2 is angled to distribute the sand to each high-pressure sandblasting unit. These multiple high-pressure sandblasting units can complete the sandblasting and rust removal of the ship's exterior from within the rust removal cover 1, preventing the sandblasting and dust from overflowing and thus minimizing environmental impact on the ship's exterior.

[0035] See Figure 1 , 24, 5. The high-pressure sandblasting unit includes a sand inlet pipe 21 and a high-pressure airflow pipe 3. One end of the sand inlet pipe 21 is connected to the sandblasting feed box 2, and the other end extends into the rust removal hood 1 and is connected to a sandblasting pipe 31. One end of the sandblasting pipe 31 is connected to the high-pressure airflow pipe 3, and the other end is connected to a nozzle 32 via a ball joint 33. The ball joint 33 consists of an inner ball fixed end 331 and an outer ball movable end 332. The outer ball movable end 332 is movably connected to the outside of the inner ball fixed end 331. The inner ball fixed end 331 is fixedly connected to the sandblasting pipe 31, and the outer ball movable end 332 is fixedly connected to the nozzle 32. The nozzle 32 is connected to the sandblasting pipe 31. The nozzle 32 can rotate in any direction under the connection of the ball joint 33. The rust removal cover 1 is provided with a push-pull mechanism for the nozzle 32 to swing left and right. The push-pull mechanism includes a telescopic motor 4. The output end of the telescopic motor 4 is connected to a swing rod 41. The other end of the swing rod 41 is connected to the rust removal cover 1 through a support seat 42. The swing rod 41 is provided with a crankshaft 43 connected to the nozzle 32 at the position of each nozzle 32. Under the traction of the push-pull mechanism, the nozzle 32 swings left and right, increasing the area of ​​the nozzle 32 for sandblasting and rust removal.

[0036] See Figure 2 , 4Inside the rust removal hood 1, and below the sandblasting end, from top to bottom, are a grinding roller 55, a dust-collecting roller 56, and a receiving plate 57. A power chamber 5 is located on one side of the grinding roller 55 and the dust-collecting roller 56. The power chamber 5 contains a drive mechanism for driving the grinding roller 55 and the dust-collecting roller 56 to rotate in opposite directions. The drive mechanism includes a power motor 51 and meshing first gear 52, second gear 53, and third gear 54. The first gear 52 is fixed to the output end of the power motor 51. The second gear 53 and third gear 54 are respectively mounted on the dust-collecting roller 56 and the grinding roller 55. Driven by the first gear 52, the grinding roller 55 and the dust-collecting roller 56 rotate in opposite directions. The grinding roller 55 rotates clockwise towards the hull to catch the falling sand particles and rub the hull surface, assisting in rust removal. During the process, the device removes rust from top to bottom. First, the grinding roller 55 pre-treats the rust layer on the outside of the hull, grinding away the thicker rust layer on the hull surface. At the same time, the sand particles sprayed by the high-pressure sandblasting unit can assist the grinding roller 55 in grinding the rust layer on the hull surface. After the hull surface is ground by the grinding roller 55, the high-pressure sandblasting unit performs sandblasting treatment on the hull surface. This can effectively improve the rust removal efficiency of the hull surface. After the sprayed sand particles are ground and rusted by the grinding roller 55, they fall onto the dust-raising roller 56 together with the rust powder that has been ground off. The dust-raising roller 56 rotates counterclockwise towards one side of the hull, which can catch the falling sand particles and rust powder. Under the action of the high-speed rotation of the dust-raising roller 56, it throws them up. The granular sand particles fall onto the receiving plate 57 under the action of gravity. The rust powder and the fine sand particles after grinding are lifted up and float inside the rust removal hood 1.

[0037] See Figure 1 , 2 7, 8. A sandblasting return mechanism is provided on one side of the rust removal hood 1. The inlet end of the sandblasting return mechanism is connected to the outlet end of the receiving plate 57. The receiving plate 57 is inclinedly set at the bottom of the rust removal hood 1, and its lower end is correspondingly set to the inlet end of the sandblasting return mechanism. The outlet end of the sandblasting return mechanism is connected to a sand collecting tank 23. The bottom of the sand collecting tank 23 is connected to the sandblasting supply box 2. The sandblasting return mechanism includes a return pipe 7, a return inlet pipe 73, and a return outlet pipe 74. The return inlet pipe 73 and the return outlet pipe 74 are respectively Connected to both ends of the return pipe 7, the return pipe 7 is equipped with a spiral feeding plate 71 that matches the inner diameter. One end of the spiral feeding plate 71 is equipped with a feeding motor 72 for driving rotation. The return feed pipe 73 is inclined upward and connected to the discharge port of the receiving plate 57. The return discharge pipe 74 is inclined downward and connected to the sand collection tank 23. The granular sand particles return to the sand collection tank 23 through the sandblasting return mechanism and are reused. In this way, the sandblasting can be recycled and reused, and the amount of new sand used is reduced.

[0038] See Figure 1-37, 8. The top of the sand collection tank 23 is equipped with a sand replenishment pipe 24, and a solenoid valve 25 is installed on the sand replenishment pipe 24. The sand collection tank 23 is equipped with a level gauge 26, and the level gauge 26 is connected to the solenoid valve 25 through PLC control. The sand replenishment pipe 24 is used to replenish new sand. When the amount of sand in the sand collection tank 23 is lower than the set amount, the solenoid valve 25 is opened, and the sand replenishment pipe 24 replenishes new sand to the sand collection tank 23.

[0039] See Figure 1-2 The rust removal cover 1 has a dust suction pipe 6 on one side of its back. The dust suction pipe 6 is connected to the dust collection equipment through the dust exhaust hose 61. The dust suction pipe 6 is used to collect dust and remove the dust that is raised.

[0040] See Figure 1-2 4, 6, The rust removal cover 1 is fixedly provided with a U-shaped sealing ring 13 on the circumferential direction of the cover opening. The sealing ring 13 can make the rust removal cover 1 fit better with the outside of the hull and prevent dust from leaking out.

[0041] See Figure 1-3 The rust removal cover 1 is equipped with tracked wheels 8 on both sides. An electromagnet 9 is fixed in the center of the tracked wheel 8. After the tracked wheel 8 is in contact with the hull, the sealing ring 13 is compressed to 1 / 3-1 / 2. The magnetic surface of the electromagnet 9 is aligned with the side of the tracked wheel 8 facing the opening of the rust removal cover 1, and a small gap is maintained between them. The tracked wheels 8 facilitate the movement of the rust removal cover 1 on the outside of the hull. The electromagnet 9 creates an attraction between the rust removal cover 1 and the hull, ensuring that the rust removal cover 1 always remains in contact with the hull. At the same time, it reduces the burden on the workers pressing the rust removal cover 1.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mechanical rust removal device for ship facades, comprising a rust removal cover (1), wherein the rust removal cover (1) is provided with lifting lugs (11) on both sides and a handle (12) is provided on the back of the rust removal cover (1), characterized in that, The top of the rust removal cover (1) is provided with a sandblasting supply box (2) in the horizontal direction, and the bottom of the sandblasting supply box (2) is provided with multiple high-pressure sandblasting units. The sandblasting ends of the high-pressure sandblasting units are arranged in a row inside the rust removal cover (1). Inside the rust removal cover (1), and below the sandblasting end, there are a grinding roller (55), a dust-generating roller (56), and a receiving plate (57) arranged from top to bottom. A power chamber (5) is provided on one side of the grinding roller (55) and the dust-generating roller (56). The power chamber (5) is provided with a drive mechanism for driving the grinding roller (55) and the dust-generating roller (56) to rotate in opposite directions. The rust removal cover (1) is provided with a sandblasting return mechanism on one side. The inlet end of the sandblasting return mechanism is connected to the outlet end of the receiving plate (57). The outlet end of the sandblasting return mechanism is connected to a sand collection tank (23). The bottom of the sand collection tank (23) is connected to the sandblasting supply box (2). The top of the sand collection tank (23) is provided with a sand replenishing pipe (24). The sand replenishing pipe (24) is provided with a solenoid valve (25). The sand collection tank (23) is provided with a level gauge (26). The level gauge (26) and the solenoid valve (25) are connected to each other through PLC control. The rust removal cover (1) has a dust suction pipe (6) on one side of its back, and the dust suction pipe (6) is connected to a dust collection device through a dust discharge hose (61).

2. The mechanical rust removal device for ship facades according to claim 1, characterized in that, The bottom of the sandblasting feed box (2) is inclined so that the sand in the sandblasting feed box (2) is distributed to each high-pressure sandblasting unit.

3. The mechanical rust removal device for ship facades according to claim 1, characterized in that, The high-pressure sandblasting unit includes a sand inlet pipe (21) and a high-pressure airflow pipe (3). One end of the sand inlet pipe (21) is connected to the sandblasting feed box (2), and the other end extends into the rust removal cover (1) and is connected to a sandblasting pipe (31). One end of the sandblasting pipe (31) is connected to the high-pressure airflow pipe (3), and the other end is connected to a spray nozzle (32) through a ball joint (33). The rust removal cover (1) is provided with a push-pull mechanism for the spray nozzle (32) to swing left and right.

4. The mechanical rust removal device for ship facades according to claim 3, characterized in that, The ball joint (33) consists of an inner ball fixed end (331) and an outer ball movable end (332). The outer ball movable end (332) is movably connected to the outside of the inner ball fixed end (331). The inner ball fixed end (331) is fixedly connected to the sandblasting pipe (31). The outer ball movable end (332) is fixedly connected to the spray nozzle (32). The spray nozzle (32) communicates with the sandblasting pipe (31).

5. A mechanical rust removal device for ship facades according to claim 3, characterized in that, The push-pull mechanism includes a telescopic motor (4), the output end of which is connected to a swing rod (41), and the other end of the swing rod (41) is connected to the rust removal cover (1) via a support base (42). The swing rod (41) is provided with a crankshaft (43) connected to each spray nozzle (32) at the position corresponding to each spray nozzle (32).

6. The mechanical rust removal device for ship facades according to claim 1, characterized in that, The receiving plate (57) is inclinedly arranged at the bottom of the rust removal cover (1), and its lower end is arranged corresponding to the feeding end of the sandblasting return mechanism.

7. A mechanical rust removal device for ship facades according to claim 1, characterized in that, The drive mechanism includes a power motor (51) and a first gear (52), a second gear (53), and a third gear (54) that mesh with each other. The first gear (52) is fixed at the output end of the power motor (51), and the second gear (53) and the third gear (54) are respectively mounted on the dust-generating roller (56) and the grinding roller (55).

8. A mechanical rust removal device for ship facades according to claim 1, characterized in that, The sandblasting return mechanism includes a return pipe (7), a return feed pipe (73), and a return discharge pipe (74). The return feed pipe (73) and the return discharge pipe (74) are respectively connected to the two ends of the return pipe (7). The return pipe (7) is provided with a spiral feed plate (71) adapted to the inner diameter. One end of the spiral feed plate (71) is provided with a feed motor (72) for driving rotation. The return feed pipe (73) is inclined upward and connected to the discharge port of the receiving plate (57). The return discharge pipe (74) is inclined downward and connected to the sand collection tank (23).

9. A mechanical rust removal device for ship facades according to claim 1, characterized in that, The rust removal cover (1) has a U-shaped sealing ring (13) fixedly installed around its opening.

10. A mechanical rust removal device for ship facades according to claim 9, characterized in that, The rust removal cover (1) is provided with track wheels (8) on both sides. An electromagnet (9) is fixed inside the track wheel (8). After the track wheel (8) is in contact with the hull, the sealing ring (13) is compressed to 1 / 3-1 / 2. The magnetic attraction surface of the electromagnet (9) is on the side of the track wheel (8) facing the opening of the rust removal cover (1) and a small gap is maintained between it and the track wheel (8).

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