JP2021084444A - Cargo gear for vessel - Google Patents

Abstract

To provide a cargo gear for a vessel capable of stably and efficiently operating a dehumidifier even when the dehumidifier is shared for a loading cargo gear and an unloading cargo gear for powder.SOLUTION: A cargo gear 1 for a vessel is provided with a dehumidifier shared for a loading gear for loading powder P1, P2 to the vessel and an unloading gear for unloading the powder P3, P4 from the vessel and dehumidifying air for transportation A3, A4 used for both of the loading and unloading gears. The dehumidifier includes: at least two cooling type dehumidifiers 2A, 2B arranged in parallel; and a dry type dehumidifier 4 connected to the two cooling type dehumidifiers in a subsequent stage. Adjustment valves 3A, 3B for uniformly adjusting load applied on each of the cooling type dehumidifiers are provided immediately near respective exits of at least two cooling type dehumidifiers. A plurality of blowers 6, 7 for supplying the air for transportation may be provided for the loading gear or the unloading gear and the air for transportation may be supplied to a fluidization device 22 for an air slide provided in a cargo hold 31 for storing the powder loaded in the vessel.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cargo handling device for ships, and more particularly to a technique for handling powders that are easily moistened.

Conventionally, in order to carry out cargo handling of powder, a ship handling device including a vertical transportation means, a horizontal transportation means, an air slide and the like has been used. The transport means of this ship cargo handling device uses air dehumidified by the dehumidifier as transport air in order to prevent powders that are easily moist from sticking to or staying in the transport route or cargo hold.

Regarding such a cargo handling device for ships, Patent Document 1 discloses a technique for sharing a dehumidifying device for both loading and unloading of powder on a ship and unloading of powder from a ship. ..

Utility Model Registration No. 3107959

However, since the amount of air used for transportation differs between the loading and unloading of powder, if the dehumidifying device is shared by both cargo handling, the load applied to the dehumidifying device becomes uneven, which hinders stable operation and efficient operation. There was a risk of being driven.

Therefore, according to the present invention, it is possible to operate the dehumidifying device stably and efficiently even when the dehumidifying device is shared between the loading and unloading of the powder in the loading and unloading of the powder which is easily moistened. It is an object of the present invention to provide a cargo handling device for ships.

In order to achieve the above object, the present invention is a ship cargo handling device, which is shared by a cargo handling device for loading powder into a ship and a unloading cargo handling device for unloading powder from a ship, and is used for both cargo handling. A marine cargo handling device including a dehumidifying device for dehumidifying the air, wherein the dehumidifying device is arranged after at least two cooling dehumidifiers arranged in parallel and the two cooling dehumidifiers. A regulating valve that includes a dry dehumidifier connected to two cooling dehumidifiers and evenly adjusts the load applied to each cooling dehumidifier near the outlet of each of the at least two cooling dehumidifiers. It is characterized by being prepared.

According to the present invention, at least two cooling dehumidifiers are provided in parallel, and only one of the cooling dehumidifiers and the dry dehumidifier is operated in the cargo handling, and the other cooling dehumidifier is operated at that time. Stop. Further, in the unloading handling, all of the two cooling type dehumidifiers and the dry type dehumidifier are operated, and the load applied to each cooling type dehumidifier is evenly adjusted by the adjusting valve. As a result, the number of operating units of the cooling type dehumidifier can be reduced, the bias of the load applied to the cooling type dehumidifier can be reduced, and stable operation and efficient operation can be performed.

A plurality of blowers for supplying the transport air to the loading and unloading device can be provided, and it is possible to flexibly cope with an increase in the amount of transport air due to an increase in the size of the ship.

The transport air can be supplied to the air slide fluidizer provided in the cargo hold that stores the powder loaded in the ship, and by using the dehumidified transport air, the cargo hold and the air slide can be used. It is possible to effectively prevent the powder from sticking and staying.

A dust collector that removes the transport air discharged from the cargo hold can be provided, and the dehumidified air supplied into the system of the ship cargo handling device is discharged to the atmosphere by the dust collector, and the dehumidified air is constantly newly used as the transport air. By using it, stable and efficient operation can be maintained.

As described above, according to the present invention, in the loading and unloading of powders that are easily moistened, the dehumidifying device can be operated stably and efficiently even when the dehumidifying device is shared between the loading and unloading of powders. It becomes possible to do such things.

It is an overall block diagram which shows one Embodiment of the cargo handling apparatus for a ship which concerns on this invention. It is an overall configuration diagram for demonstrating the operation at the time of loading and unloading of the cargo handling apparatus for a ship of FIG. It is an overall block diagram for demonstrating the operation at the time of unloading cargo handling of the ship cargo handling apparatus of FIG.

Next, a mode for carrying out the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of a ship cargo handling device according to the present invention. In the figure, the broken line shows the flow of air, and the solid line shows the flow of powder (including the case with air).

This cargo handling device 1 performs both loading and unloading of powder (powder that tends to be moist) to a powder bulk carrier or the like, and is a regulating valve 3 (3A, 3B) near the outlet. One of the two cooling dehumidifiers 2 (2A, 2B) provided with, the dry dehumidifier 4 having an automatic switching valve 5 (5A, 5B) with a branched outlet, and the latter stage of the dry dehumidifier 4. A loading and unloading blower 6 provided on the branch road, a unloading and handling blower 7 provided on the other side of the branch road, a loading and unloading transport means 11 connected to the subsequent stage of the loading and unloading blower 6, and a unloading and handling blower 7 The unloading transportation means 21 connected to the latter stage is provided.

The cargo handling transport means 11 is arranged after the cargo handling blower 6, and has two air slides 12 (12A, 12B) having receiving ports 12a and 12b for the powders P1 and P2, and each air slide 12A, Automatic switching valves 13A and 13B arranged in front of the inlets 12a and 12b of 12B, vertical transportation means 14 arranged in the rear of the air slide 12, distribution damper 15, horizontal transportation means 16 and outlet gate 17 (17A to 17I, some reference numbers are omitted) and an air slide 18 (18A to 18P, some reference numbers are omitted) connected to the cargo hold 31 (31A, 31B) of the ship. ..

On the other hand, the unloading transportation means 21 is arranged after the unloading blower 7, and is an air slide fluidizing device 22 that supplies fluidized air to the air slides arranged at the bottom of the cargo hold 31 (31A, 31B). (22A, 22B), vertical transport means 23 (23A, 23B) having flow control gates 23a, 23b at the bottom, horizontal transport means 16, relay hopper 25, and air connected to silos of land service stations. A transport device 26 is provided. The horizontal transportation means 16 is shared by loading and unloading.

Next, the operation of the ship cargo handling device 1 having the above configuration during loading and unloading will be described with reference to FIG. In the figure, the thick broken line shows the flow of air, and the thick solid line shows the flow of powder (including the case with air).

By operating one cooling dehumidifier 2, a dry dehumidifier 4, and a loading blower 6 selected from the cooling dehumidifiers 2 (2A, 2B) so that the amount of air conveyed during loading and unloading is appropriate. , Air A1 or A2 is taken into the cooling dehumidifier 2 from the atmosphere to cool and dehumidify. The dehumidified air discharged from the cooling dehumidifier 2 is further dry-dehumidified by the dry dehumidifier 4, and discharged from the cargo handling blower 6 as the transport air A3. On the other hand, the powder P1 or P2 to be conveyed to the ship is received from the receiving ports 12a and 12b of the air slide 12 (12A, 12B). Here, the automatic switching valves 13 (13A, 13B) corresponding to the receiving inlets 12a and 12b are opened.

The powders P1 and P2 received by the air slide 12 are vertically transported by the vertical transport means 14, the feed amount of the powders P1 and P2 in the bow direction and the stern direction is distributed by the distribution damper 15, and the horizontal transport means 16 horizontally transports the powders P1 and P2. After that, the cargo is loaded into the cargo hold 31 (31A, 31B) of the ship via a plurality of exit gates 17 (17A to 17I) and air slides 18 (18A to 18P). This completes the loading and unloading of the powders P1 and P2.

Next, the operation of the ship cargo handling device 1 having the above configuration during unloading and handling will be described with reference to FIG. In the figure, the thick broken line shows the flow of air, and the thick solid line shows the flow of powder (including the case with air).

Set the opening degree of the adjusting valve 3 (3A, 3B) near the outlet of the cooling type dehumidifier 2 (2A, 2B) so that the amount of air conveyed during unloading is appropriate, and open the automatic switching valve 5B to automatically open the automatic switching valve 5B. By closing the switching valve 5A and operating the unloading blower 7, air A1 and A2 are taken into the cooling dehumidifiers 2 (2A and 2B) from the atmosphere to cool and dehumidify. The dehumidified air discharged from the cooling dehumidifier 2 is further dry-dehumidified by the dry dehumidifier 4, and discharged as the transport air A4 from the unloading blower 7. As a result, the air slide fluidization device 22 (22A, 22B) pulls out the powders P3 and P4 stored in the cargo hold 31 (31A, 31B) from the cargo hold 31 while fluidizing them. Here, since the transport air A4 is discharged to the atmosphere by the dust collectors 32 (32A, 32B) provided at the rear stage of the cargo hold 31, the dehumidified transport air A4 is constantly supplied to the unloading cargo handling system to dehumidify. The air condition is maintained.

The powders P3 and P4 drawn from the cargo hold 31 are vertically transported by the vertical transport means 23 while adjusting the flow rate by the flow rate adjusting gates 23a and 23b, horizontally transported by the horizontal transport means 16, and then put into the relay hopper 25. Here, it is assumed that the horizontal transport means 16 can transport to an intermediate position on the central side in the direction opposite to the cargo handling.

Powders P3 and P4 are extracted from the relay hopper 25 and pumped by air transportation to a silo installed at a service station on land by an air transportation device 26. This completes the loading and unloading of the powders P3 and P4.

According to the present embodiment, two cooling type dehumidifiers 2 are provided in parallel, and only one of the cooling type dehumidifiers 2 and the dry type dehumidifier 4 is operated in the cargo handling, and at that time, the other cooling type dehumidifier 2 is operated. The type dehumidifier 2 is stopped. Further, in the unloading handling, all of the two cooling type dehumidifiers 2 and the dry type dehumidifier 4 are operated, and the load applied to each cooling type dehumidifier is evenly adjusted by the adjusting valve 3. As a result, the number of operating units of the cooling type dehumidifier 2 can be reduced, and the bias of the load applied to the cooling type dehumidifier 2 can be reduced, so that stable operation and efficient operation can be performed.

In the above embodiment, two cooling dehumidifiers 2 and one dry dehumidifier 4 are arranged, but the type and number of dehumidifiers are not limited to this, and at least two dehumidifiers are provided. , A regulating valve that evenly adjusts the load applied to each dehumidifying device may be provided near the outlet of each dehumidifying device.

Further, the number of each device constituting the ship cargo handling device 1, such as the cargo handling blower 6 and the unloading cargo handling blower 7, can be appropriately selected according to the size of the ship and the like. As for the number of air slide fluidization devices 22, 60 to 230 units are configured in the entire cargo hold bottom according to the size of the ship and the like. For example, a plurality of small cargo handling blowers 6 and unloading cargo handling blowers 7 may be used. Further, depending on the size of the ship, a chute can be used instead of the air slide 18. Further, the number of dust collectors 32 and the like can be increased as the number of cargo handling equipment increases.

1 Ship cargo handling device 2 (2A, 2B) Cooling dehumidifier 3 (3A, 3B) Adjusting valve 4 Dry dehumidifier 5 (5A, 5B) Automatic switching valve 6 Loading blower 7 Lifting cargo handling blower 11 Loading and handling Transport means 12 (12A, 12B) Air slides 12a, 12b Inlet 13 (13A, 13B) Automatic switching valve 14 Vertical transport means 15 Sorting damper 16 Horizontal transport means 17 (17A to 17I) Outlet gate 18 (18A to 18P) Air Slide 21 Lifting cargo handling transport means 22 (22A, 22B) Air slide fluidizer 23 (23A, 23B) Vertical transport means 23a, 23b Flow control gate 25 Relay hopper 26 Air transport device 31 (31A, 31B) Cargo storage 32 ( 32A, 32B) Dust collector

Claims (4)

It is a ship handling device that is shared by the loading and unloading of loading powder into a ship and the unloading and unloading of powder from a ship, and is equipped with a dehumidifying device that dehumidifies the transport air used for both cargo handling.
The dehumidifier includes at least two cooling dehumidifiers arranged in parallel and a dry dehumidifier arranged after the two cooling dehumidifiers and connected to the two cooling dehumidifiers. Including
A ship cargo handling device characterized in that a regulating valve for evenly adjusting the load applied to each cooling type dehumidifier is provided in the immediate vicinity of each outlet of the at least two cooling type dehumidifiers. The ship cargo handling device according to claim 1, further comprising a plurality of blowers that supply the transport air to the loading / unloading / lifting device. The ship cargo handling device according to claim 1 or 2, wherein the transport air is supplied to the air slide fluidization device provided in the cargo hold for storing the powder loaded in the ship. The ship cargo handling device according to claim 3, further comprising a dust collector that removes transport air discharged from the cargo hold.

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