Blast equipment and ships

Abstract

A blasting machine for projecting an abrasive material onto an object comprises a projection unit for projecting the abrasive material, and a collection unit for collecting the projected abrasive material. The collection unit is capable of collecting the abrasive material while the projection unit is projecting the abrasive material.

Description

Technical Field

[0006] ,

[0007] ,

[0001] The present invention relates to a blasting device and a ship.

Background Art

[0002] As a conventional blasting device, the one described in Patent Document 1 is known. This blasting device polishes an object by projecting an abrasive onto the object such as the outer plate of a ship. Further, this blasting device collects and recovers the dust generated during the polishing operation.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, in addition to the abrasive according to the above prior art, there is also one that projects a scouring material for facilitating the attachment of paint to the outer plate of a ship. The scouring material increases the surface area of the outer plate, and thus the painting also adheres more easily. On the other hand, after the projection, the scouring material adheres to moisture and dust (adhesion of moisture and dust causes rust), so it has been discarded as it is.

[0005] Therefore, an object of the present invention is to provide a blasting device and a ship that can reduce the amount of scouring material used and improve the working efficiency.

Means for Solving the Problems

[0006] The blasting device according to the present invention is a blasting device for a ship that projects a scouring material onto an object, and includes a projection unit that projects the scouring material and a recovery unit that recovers the projected scouring material, and the recovery unit can recover the scouring material while the projection unit projects the scouring material.

[0007] The blasting device comprises a projection unit that projects abrasive material and a recovery unit that collects the projected abrasive material. By including a recovery unit, the blasting device can reuse the abrasive material after it has been projected onto an object, without discarding it. Furthermore, the recovery unit can collect the abrasive material while the projection unit is still projecting it. Therefore, the blasting device can collect the abrasive material in the recovery unit before moisture or debris adheres to it, without stopping the projection operation in the projection unit. As a result, the amount of abrasive material used can be reduced, and work efficiency can be improved.

[0008] The recovery unit may collect the abrasive material that has hit the target object and fallen off in the projection unit. This allows the recovery unit to collect the abrasive material that has accumulated below the target object while the projection unit is still projecting the abrasive material.

[0009] The abrasive material collected in the recovery section may be reused in the projection section. This reduces the amount of abrasive material used.

[0010] The projection unit and the recovery unit may perform projection and recovery within a single cargo tank. For example, if the projection unit and recovery unit are provided in multiple cargo tanks (for example, if the projection unit is provided in one cargo tank and the recovery unit is provided in another), if the capacities of each cargo tank are different, the amount of abrasive material to be recovered and the amount of abrasive material to be projected will vary, and there is a possibility that there will be insufficient abrasive material to recover and project. In contrast, if the projection unit and recovery unit perform projection and recovery within a single cargo tank, it is possible to prevent a shortage of abrasive material to recover and project.

[0011] The collection unit may have a mode for collecting dust and abrasive material, and a mode for collecting dust only. In this case, the collection unit can switch between modes depending on the situation.

[0012] The recovery unit is connected to a suction unit that sucks up abrasive material via a recovery line. A storage unit for storing abrasive material is provided at an intermediate position in the recovery line. Of the abrasive material sucked up by the suction unit, the material that falls into and accumulates in the storage unit may be stored as abrasive material to be re-projected by the projection unit. The recovery line transmits the suction force generated in the suction unit to the recovery unit and can also function as a transport path for transferring the abrasive material recovered by the recovery unit to the storage unit.

[0013] The dust collected in the collection unit may be sucked into the storage unit by the suction unit, and then further sucked into the suction unit from within the storage unit. In this case, the abrasive material and dust can be separated in the storage unit.

[0014] The blasting device may also include a supply unit to replenish any shortage of abrasive material projected by the projection unit. In this case, if the abrasive material becomes insufficient, the supply unit can replenish it.

[0015] The blasting device described above may be installed on a ship. In this case, the blasting device can project abrasive material onto structures inside the ship.

[0016] The vessel according to the present invention has the blast device described above.

[0017] The vessel according to the present invention can achieve the same functions and effects as the blast device described above. [Effects of the Invention]

[0018] According to the present invention, it is possible to provide a blasting device and a vessel that can reduce the amount of abrasive material used and improve work efficiency. [Brief explanation of the drawing]

[0019] [Figure 1] This is a partial side view showing a blasting device and a vessel according to an embodiment of the present invention. [Figure 2] This is a partial side view showing a blasting device and a vessel according to an embodiment of the present invention.

Best Mode for Carrying Out the Invention

[0020] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same or corresponding parts are denoted by the same reference numerals, and redundant descriptions are omitted.

[0021] FIG. 1 is a partial side view showing a blasting device and a ship according to an embodiment of the present invention. The blasting device 1 is a device that paints an object by projecting a cleaning material onto the object. As shown in FIG. 1, the blasting device 1 is provided on the ship 100. The blasting device 1 projects a cleaning material onto the internal structure of the ship 100. The blasting device 1 includes a projection unit 2, a recovery unit 3, a suction unit 4, a storage unit 6, and a supply unit 7. Further, the blasting device 1 includes a line L1 connecting the recovery unit 3 and the storage unit 6, a line L2 connecting the storage unit 6 and the suction unit 4, a line L3 connecting the supply unit 7 and the line L1, and a bypass line L4 connecting the line L1 and the line L2. The blasting device 1 reuses the cleaning material recovered by the recovery unit 3 in the projection unit 2. Further, the projection unit 2 and the recovery unit 3 can perform projection and recovery in one cargo tank.

[0022] The projection unit 2 is a device for projecting abrasive material. The projection unit 2 comprises a spray device 11, a blast nozzle 15, and a blast hose 13. The spray device 11 is a device that applies pressure to the abrasive material supplied from the storage unit 6. The spray device 11 is installed on the deck 101 of the ship 100. The blast hose 13 is connected to the spray device 11 and extends into the interior of the ship 100. The blast hose 13 is a hose that transfers the abrasive material pressurized by the spray device 11 into the interior of the ship 100. A blast nozzle 15 is provided at the end of the blast hose 13. The blast nozzle 15 is a component that constitutes a projection port for projecting the abrasive material transferred by the blast hose 13 onto a target object. The operator can hold the blast nozzle 15 and project the abrasive material towards a desired location on the ship 100. The blast nozzle 15 may be mounted on a trolley or the like, in which case it moves while projecting abrasive material as the trolley moves. In this embodiment, the projection unit 2 is equipped with two spraying devices 11, and each spraying device 11 has two sets of blasting hoses 13 and blast nozzles 15, but the number is not particularly limited.

[0023] The recovery unit 3 is a device that recovers the projected abrasive material. The recovery unit 3 recovers the abrasive material that has hit the projection target and fallen in the projection unit 2. The recovery unit 3 is connected to the suction unit 4 that sucks the abrasive material via lines L1 and L2. Therefore, the recovery unit 3 recovers the abrasive material by the suction force from the suction unit 4. The recovery unit 3 includes a header 14, a floor brush 16, and a recovery hose 17. The header 14 is a joint that connects line L1 and a plurality of recovery hoses 17. The header 14 is provided on the deck 101 of the ship 100. The header 14 is a pipe-shaped member that extends in the horizontal direction and has a connection portion 14a for connecting the recovery hose 17 at a predetermined interval in the longitudinal direction. The recovery hose 17 connected to the connection portion 14a extends into the ship 100. The recovery hose 17 is a hose that transfers the abrasive material sucked by the floor brush 16 to the header 14. A floor brush 16 is provided at the tip of the recovery hose 17. The floor brush 16 is a tool that recovers the abrasive material while sweeping it after it has been projected onto the object. An operator can hold the floor brush 16 and suck while sweeping the abrasive material at a desired location on the ship 100. Incidentally, the floor brush 16 may be provided on a traveling carriage or the like. In this case, as the floor brush 16 moves with the movement of the traveling carriage, it moves while recovering the abrasive material.

[0024] In addition, a supply port 14b is provided at the tip of the header 14. A hose (not shown) is connected to the supply port 14b, and supply abrasive material can be sucked from an abrasive material box or the like installed on a quay outside the ship 100. For example, when it becomes impossible to recover the abrasive material inside the ship 100 from the floor brush 16, etc., the supply port 14b may suck the abrasive material outside the ship 100 as an emergency measure.

[0025] The suction unit 4 is a device that generates suction force to suck up abrasive material in the recovery unit 3. The suction unit 4 is installed on the deck 101 of the ship 100. For example, the suction unit 4 is equipped with a vacuum recovery machine 18 that generates suction force by creating a vacuum inside. In this embodiment, the suction unit 4 is equipped with two vacuum recovery machines 18, but the number is not particularly limited. The suction unit 4 is in communication with the header 14 of the recovery unit 3 via line L2, the internal space of the storage unit 6, and line L1. That is, the suction force generated in the suction unit 4 is transmitted to the header 14 of the recovery unit 3, and further transmitted to the floor brush 16 via the recovery hose 17. With this configuration, lines L2 and L1 are configured as a recovery line L10 for recovering abrasive material and dust contained therein from inside the ship 100.

[0026] The storage unit 6 is a device for storing abrasive material. The storage unit 6 consists of a collect tank that stores abrasive material in its internal space. The storage unit 6 is located midway along the recovery line L10. That is, the storage unit 6 is located between line L1 and line L2. Lines L1 and L2 are located at the upper end 6b of the storage unit 6. Replenishment dampers 21 are provided near the upper end 6b of the storage unit 6 for lines L1 and L2. When the blasting device 1 is started, the top lid of the storage unit 6 is opened and new abrasive material is supplied.

[0027] The storage unit 6 is located above the spraying device 11 of the projection unit 2, at a position spaced above the deck 101 of the ship 100. A hopper 6a is provided at the lower end of the storage unit 6 to collect the abrasive material stored in its internal space. The hopper 6a is connected to each spraying device 11 via a distribution unit 22 for distributing the abrasive material to each spraying device 11. The distribution unit 22 has a configuration in which a single flow path extending from one opening at the bottom of the hopper 6a branches into two flow paths. Each flow path of the distribution unit 22 and each spraying device 11 are connected via a supply damper 23. The storage unit 6 is supported by a frame 25, and the spraying device 11 is located inside the frame 25. In this way, the storage unit 6 and the spraying device 11 are compactly configured as an integrated unit.

[0028] Here, let's call the interface of the abrasive material stored in the storage section 6 "F". In this case, a space SP is formed between interface F and the upper end portion 6b. The abrasive material recovered by the recovery section 3 is supplied to the space SP in the storage section 6 via line L1. At this time, abrasive material particles of a predetermined size fall through space SP and accumulate on interface F. On the other hand, smaller particles are sucked into line L2 as dust by the suction force from line L2. In this way, the abrasive material sucked up by the suction section 4 that falls and accumulates in the storage section 6 is stored as abrasive material to be re-projected in the projection section 2. Meanwhile, the dust recovered by the recovery section 3 is sucked into the storage section 6 by the suction section 4 and then sucked from within the storage section 6 to the suction section 4. Particles smaller than 106 μm are sucked into line L2 as dust, while larger particles accumulate on interface F as abrasive material. Regarding the suction force generated in the suction section 4 at this time, the output of the vacuum recovery machine may be set to 75 kW, the vacuum pressure to -60 kPa, and the maximum airflow to 45 m² / min.

[0029] As described above, the operation of the suction unit 4 generating suction force for the recovery unit 3 via the recovery line L10 and the operation of the projection unit 2 spraying abrasive material supplied from the storage unit 6 are independent of each other. In other words, the recovery unit 3 can recover abrasive material regardless of whether the projection unit 2 is performing projection or not. Therefore, the recovery unit 3 can recover abrasive material while the projection unit 2 is projecting the abrasive material.

[0030] The replenishment unit 7 is a device that replenishes the abrasive material projected by the projection unit 2 if it is insufficient. The replenishment unit 7 comprises a tank 31 for storing abrasive material and a replenishment damper 32 provided on line L3 connecting the tank 31 and line L1. The replenishment unit 7 opens the replenishment damper 32 when the amount of abrasive material in the storage unit 6 is insufficient. As a result, the abrasive material in the tank 31 falls from the tank 31 to line L1, is sucked in, and supplied to the storage unit 6.

[0031] A bypass damper 33 is provided in the bypass line L4 that connects line L1 and line L2.

[0032] Next, the operation of the blasting device 1 will be explained. The arrows shown in Figure 1 indicate the flow of abrasive material and dust collected by the recovery unit 3. On the other hand, the arrows shown in Figure 2 indicate the flow of dust when only dust is collected. Thus, the recovery unit 3 has a mode for collecting dust and abrasive material, and a mode for collecting only dust.

[0033] As shown in Figure 1, when recovering abrasive material in the recovery unit 3, the replenishment damper 21 and the supply damper 23 are opened, and the replenishment damper 32 and the bypass damper 33 are closed. In addition, the spray device of the projection unit 2 and the vacuum recovery machine 18 of the suction unit 4 are activated. As a result, abrasive material is projected from the blast nozzle 12 of the projection unit 2. The floor brush 16 of the recovery unit 3 also sucks up and recovers the abrasive material inside the ship 100.

[0034] The abrasive material and dust recovered in the recovery unit 3 are supplied to the storage unit 6 via line L1. The abrasive material falls from the upper end 6b of the storage unit 6 through space SP and accumulates at interface F. Meanwhile, the dust is sucked from the storage unit 6 to the suction unit 4 via line L2. As a result, the abrasive material after projection is stored again in the storage unit 6, and the dust is recovered by the vacuum recovery machine 18. If a shortage of circulating abrasive material is detected, the replenishment unit 7 opens the replenishment damper 32, causing new abrasive material in the tank 31 to fall into line L1. The new abrasive material that falls into line L1 is sucked into the storage unit 6 and also falls and accumulates at interface F.

[0035] As shown in Figure 2, when only dust is to be collected in the collection unit 3, the replenishment damper 21, the supply damper 23, and the replenishment damper 32 are closed, and the bypass damper 33 is opened. The vacuum recovery machine 18 of the suction unit 4 is also activated. As a result, the floor brush 16 of the collection unit 3 sucks up and collects dust from inside the ship 100. The dust collected in the collection unit 3 then passes through line L1 and bypass line L4 to line L2, where it is collected by the vacuum recovery machine 18 of the suction unit 4.

[0036] Next, the operation and effects of the blasting device 1 and the ship 100 according to this embodiment will be described.

[0037] The blasting device 1 comprises a projection unit 2 for projecting abrasive material and a recovery unit 3 for recovering the projected abrasive material. By including the recovery unit 3, the blasting device 1 can reuse the abrasive material projected onto an object by recovering it in the recovery unit 3, thus eliminating the need for disposal. Furthermore, the recovery unit 3 can recover the abrasive material while the projection unit 2 is still projecting it. Therefore, the blasting device 1 can recover the abrasive material in the recovery unit 3 before moisture or debris adheres to the projected abrasive material, without stopping the projection operation in the projection unit 2. As a result, the amount of abrasive material used can be reduced, and work efficiency can be improved.

[0038] Conventional blasting systems perform the following operations independently: projecting abrasive material from the spraying device 11 via the storage unit 6, collecting the abrasive material in a collection tank using a vacuum cleaner and disposing of it in a flexible container bag, and loading the abrasive material from the flexible container bag into the storage unit 6 using a crane. Because each operation is performed independently, the work efficiency is low. In contrast, the blasting system 1 according to this embodiment is configured with projection, collection, storage, and replenishment integrated into a single unit. Therefore, the blasting system 1 enables the recycling of abrasive material without interrupting the cycle of projection, collection, storage, and replenishment, thereby reducing man-hours and costs. Furthermore, since the operator's work is completed inside the ship 100, it can be operated in all weather conditions without being affected by the weather. For example, while the actual use of abrasive material in conventional blasting systems is 2.82 times the planned amount, using the blasting system 1 according to this embodiment can reduce it to 1 or less. Furthermore, the replenishment time for abrasive material, which was 20 hours with conventional blasting equipment, can be reduced to 5 hours or less by using the blasting equipment 1 according to this embodiment.

[0039] The recovery unit 3 may recover the abrasive material that has hit the projection target and fallen off by the projection unit 2. This allows the recovery unit 3 to recover the abrasive material that has accumulated below the projection target while the projection unit 2 is still projecting the abrasive material.

[0040] The abrasive material collected in the collection unit 3 may be reused in the projection unit 2. This reduces the amount of abrasive material used.

[0041] The projection unit 2 and the recovery unit 3 may perform projection and recovery within a single cargo tank. For example, if the projection unit 2 and the recovery unit 3 are installed in multiple cargo tanks (for example, if the projection unit 2 is installed in one cargo tank and the recovery unit 3 is installed in another cargo tank), if the capacities of each cargo tank are different, the amount of abrasive material to be recovered and the amount of abrasive material to be projected will vary, and there is a possibility that there will be insufficient abrasive material to recover and project. In contrast, if the projection unit 2 and the recovery unit 3 perform projection and recovery within a single cargo tank, it is possible to prevent a shortage of abrasive material to recover and project.

[0042] The recovery unit 3 may have a mode for recovering dust and abrasive material, and a mode for recovering only dust. In this case, the recovery unit 3 can switch between modes depending on the situation.

[0043] The recovery unit 3 is connected to the suction unit 4, which sucks up the abrasive material, via the recovery line L10. A storage unit 6 for storing the abrasive material is provided at an intermediate position in the recovery line L10, and any abrasive material sucked up by the suction unit 4 that falls into and accumulates in the storage unit 6 may be stored as abrasive material to be re-projected by the projection unit 2. The recovery line L10 transmits the suction force generated by the suction unit 4 to the recovery unit 3 and can also function as a transfer path for moving the abrasive material recovered by the recovery unit 3 to the storage unit.

[0044] The dust collected in the collection unit 3 is sucked into the storage unit 6 by the suction unit 4, and may be further sucked into the suction unit 4 from within the storage unit 6. In this case, the abrasive material and dust can be separated in the storage unit 6.

[0045] The blasting device 1 may further include a supply unit 7 for replenishing any shortage of abrasive material projected by the projection unit 2. In this case, if the abrasive material becomes insufficient, the supply unit 7 can replenish it.

[0046] The blasting device 1 described above may be installed on the ship 100. In this case, the blasting device 1 can project abrasive material onto structures inside the ship 100.

[0047] The vessel 100 according to this embodiment has the blast device 1 described above.

[0048] The vessel 100 according to this embodiment can obtain the same functions and effects as the blast device 1 described above.

[0049] The present invention is not limited to the embodiments described above.

[0050] For example, in the above embodiment, a blasting device is provided on a ship, but it may also be applied to blasting devices at general factories or on-site construction sites such as bridges.

[0051] Furthermore, the arrangement of each component described above is merely an example and can be modified as appropriate without departing from the spirit of the present invention. [Explanation of Symbols]

[0052] 1...Blasting device, 2...Projection unit, 3...Recovery unit, 4...Suction unit, 6...Storage unit, 7...Replenishment unit, 100...Ship, L10...Recovery line.

Claims

1. A ship's blasting device that projects abrasive material onto an object, A projection unit for projecting the abrasive material, It comprises a recovery unit for recovering the projected abrasive material, The operation by the projection unit and the operation by the recovery unit are independent of each other. The recovery unit is capable of recovering the abrasive material while the projection unit is projecting the abrasive material. The collection unit can be switched between a mode for collecting dust and the abrasive material, and a mode for collecting only dust. In the mode for recovering the dust and abrasive material, the dust and abrasive material are recovered via a storage unit for storing the abrasive material. In the mode for collecting only the dust, the storage unit is bypassed by a bypass line and only the dust is collected. By closing the bypass damper of the bypass line, the system switches to a mode for collecting the dust and abrasive material. A blasting device that switches to a mode in which only the dust is collected by opening the bypass damper of the bypass line.

2. The blast apparatus according to claim 1, wherein the recovery unit recovers the abrasive material that has fallen after hitting the target object in the projection unit.

3. The blast apparatus according to claim 1 or 2, wherein the abrasive material recovered in the recovery unit is reused in the projection unit.

4. The blast apparatus according to any one of claims 1 to 3, wherein the projection unit and the recovery unit perform projection and recovery within a single cargo tank.

5. The recovery unit is connected via a recovery line to a suction unit that sucks up the abrasive material. The storage section is provided at an intermediate position in the aforementioned recovery line. The blast apparatus according to any one of claims 1 to 4, wherein the abrasive material sucked up by the suction section that falls into and accumulates in the storage section is stored as abrasive material to be re-projected by the projection section.

6. In the mode for collecting the dust and the abrasive material, the dust collected in the collection unit is sucked into the storage unit by the suction unit, and then sucked from the storage unit back into the suction unit, as described in Claim 5.

7. The blast apparatus according to any one of claims 1 to 6, further comprising a supply unit for supplying any shortage of the abrasive material projected by the projection unit.

8. A blasting device according to any one of claims 1 to 7, to be installed on a ship.

9. A vessel having a blasting device according to any one of claims 1 to 8.

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