JPS5845394B2 - Powder carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transport ship that handles granular materials such as pulverized coal and grain.

In a system in which granular material transported from land side with gas (air, inert gas, nitrogen, etc.) is loaded onto a ship, it is preferable to separate the granular material sent into the ship's hold from the gas as soon as possible.

By the way, in the initial state of stowage in a ship's hold, it is sufficient to separate the goods in a large ship's hold, and separation is relatively easy, but as the loading progresses and the space inside the ship's hold decreases, this separation becomes extremely difficult. becomes.

In other words, the newly delivered gaseous powder is sprayed onto the powder and granular material stowed in the hold, and the powder and granular material already stowed is stirred.

This further makes it impossible to load the powder up to the top and into the bulkheads within the ship's hold.

The present invention provides a powder carrier that can solve the above problems, and one embodiment thereof will be described below with reference to the drawings.

In FIGS. 1 to 4, 1 is a powder carrier, and a plurality (6 in the embodiment) of enclosed vessels 2A, 2B,
20, 2D, 2E, 2F and has a central conveyor section 3.

The ships 2A to 2F have left and right bottoms 6A and 6B formed by a center hopper 4 and side hoppers 5A and 5B in a cross section, and a wavy bottom hopper 7 in a longitudinal section.

Screw conveyors 8A, 8B in the ship width direction are disposed at each wave bottom of the ship bottoms 6A, 6B, and the outer ends of these screw conveyors 8A, 8B are connected to side hoppers 5A, 5B.
The case 10A is supported by the center hopper 4, and its inner end is provided in the space 9 inside the center hopper 4.

Supported by 10B.

In addition, each screw conveyor 8A, 8B has a case 10A.
, 10B are separately driven by drive devices 11A and 11B attached to the respective parts.

In the cases IOA and IOB, chain conveyors 12A and 12B extending in the bow and stern directions are arranged, and the ends of these chain conveyors 12A and 12B reach the central conveyor section 3.

Inside this central conveyor section 3 is the chain conveyor 12A at its receiving opening.

A packet conveyor 13 to which 12B is connected is provided.

A pair of packet conveyors 13 are provided on the bow side and the stern side, and penetrate through the upper deck 14, respectively, and have their discharge ports 15 located above the upper deck 14.

A solid gas separation device 16 consisting of a cyclone, a bag filter, etc. is provided above each of the ships 2A to 2F.

The discharge ports of these solid gas separation devices 16 are connected to an inert gas recovery pipe 17 arranged on the upper deck 14.

Further, on the upper deck 14, a pneumatic loading pipe 18 and a secondary gas supply pipe 19 are provided which communicate with the upper part of each vessel 2A to 2F.

The starting end of 20 is the discharge port 1 of the packet conveyor 13.
5, and a rotating chain conveyor 21 that can be swung out overboard is disposed at the end of the fixed chain conveyor.

22 is a discharge mobile fan, 23 is a discharge pipe, and each ship 2A~
Each is located on the 2nd floor.

24 is an inert gas generator installed on the upper deck 14, 25
is the cargo handling control room.

Also, on the bottom of the ship, there is an inert gas supply pipe 26 for the crosslinking prevention device.
, an inert gas supply pipe 27 to the screw conveyors 8A and 8B, and a chain conveyor 12A.

An inert gas supply pipe 28 to 12B is connected.

In FIG. 2, 29 indicates a powder transport pipe, and 30 indicates an inert gas recovery pipe.

In FIGS. 4 to 7, a plurality of granular material intrusion prevention plates 32 are provided around the suction port 31 of the solid gas separator (bag filter) 16 in the upper part of the ships 2A to 2F.

In other words, each powder infiltration prevention plate 32 is installed in a row from the lower surface of the hold ceiling wall 33 downward and inward, and its inclination angle (θ) is influenced by the angle of repose of the powder, but approximately Approximately 30
degree is preferred.

Passage grooves 34 are formed between adjacent side edges of each particulate material infiltration prevention plate 32, and passage holes 35 are further formed between the lower edges.

The communication structure of the loading pipe 18 to the upper part of each of the lead parts 2A to 2F is as follows.

That is, a branch pipe 31 having a valve 36 is branched from the loading pipe 18, and this is passed through the ceiling wall 33 to connect the ships 2A to 2F.
It is located inside.

A flexible hose 38 is connected to the tip of the branch pipe 37, and a charging nozzle 39 is connected to the tip of the flexible hose 38.

This injection nozzle 39 is connected to pins 41A and 40B connected to a pair of upper and lower brackets 40A and 40B that are connected from the inner surface of the ceiling wall 33.
1B, so that the direction can be changed in the left-right direction around the vertical axis 42.

A cylinder 43 for performing this direction change is provided between a link 44 integral with the pin 41A and the ceiling wall 33.

The input direction (4) of the input nozzle 39 is slightly downward, and reflectors 45 are provided at a plurality of locations within the input range caused by swinging (direction change).

This reflector 45 is fixed to a rotating vertical shaft 47 supported by the ceiling wall 33 and a bracket 46.
The direction can be changed manually by operating a handle 48 attached to the upper end of the device 7, but this may also be done by remote control.

Note that the orientation change position can be fixed.

Explain the work at the loading dock.

With the powder carrier ship 1 moored at the loading port, the powder transport pipe 29 from the loading port side is connected to the loading pipe 18 as shown in the imaginary line in FIG. 2, and the inert gas recovery pipe 17 The inert gas recovery pipe 30 on the loading port side is connected to.

In this state, the powder and granular material on the loading port side is sent into each of the ships 2A to 2F via the powder and granular material transport pipe 29 and the loading/unloading pipe 18 by gas transport using an inert gas.

In other words, the powder and granule gaseously transported by the powder and granule transport pipe 29 are as follows:
Branch pipe 37. Flexible hose 38. Input nozzle 39
In the initial state, the powder and gas are separated by the difference in gravity within the large ships 2A to 2F, and the powder and granules are stacked.

At this time, the ultrafine powder and the like flow together with the inert gas toward the solid gas separator 16, and a part of it collides with the intrusion prevention plate 32 and falls.

The remainder is separated from inert gas by a solid gas separator 16.

This separated inert gas is collected by inert gas recovery pipes 17 and 3.
0 and is collected at the loading port and reused for gas transportation.

When such loading progresses and the powder and granules are stacked close to the top of the vessels 2A to 2F, the charging nozzle 39 is swung around the axis 42 to direct the charging direction (4) to a reflector. Turn to 45.

As a result, the powder and granules collide with the reflector 45, thereby reducing the momentum of the powder and gas and promoting separation, and the powder and granules are piled up inside the ships 2A to 2F depending on the reflection angle. You will be trapped.

Therefore, by changing the direction of the reflector 45 and further by changing the direction of the charging nozzle 39 to change the target reflector 45, powder and granular materials can be loaded to every corner of the ship 2A to 2F. Also, it is possible to prevent the already piled powder from being agitated due to the reduction in momentum.

After the loading is completed as described above, the powder and granular material carrier 1 is transported by navigation, and the inert gas required during navigation, such as replenishing the vessels 2A to 2F, is stored in the inert gas on the upper deck 14. An inert gas generated by the generator 24 is used.

In the above embodiment, as shown in FIG. 5, a combination structure is shown in which one injection nozzle 39 and two reflectors 45 are arranged for one hold, but a plurality of injection nozzles 39 are arranged. Alternatively, one or more reflectors 45 may be disposed at the most effective position depending on the position and number of injection nozzles 39.

Further, the number of injection nozzles 39 is not limited to the 90 degree swing shown in FIG. 7 due to the number of injection nozzles 39.

As described above, according to the present invention, when loading progresses and the space inside the ship decreases, by changing the direction of the injection nozzle so that the injection direction is in the direction of collision with the reflector, It is possible to reduce the momentum of the powder and gas by colliding with this reflector, thereby promoting the separation of the powder and gas, and also stirring up the powder and the gas that has already been piled up. It is possible to carry out stowage up to the top of the ship's hold.

Furthermore, by changing the direction of the reflector, powder and granules can be stowed to every corner of the ship's hold.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a vertical side view of the hold, Fig. 2 is a plan view, Fig. 3 is a plan sectional view, Fig. 4 is a cross-sectional front view, and Fig. 5 is a main part. FIG. 6 is a longitudinal sectional view of the charging nozzle portion, and FIG. 7 is a plan view thereof. 1... Powder carrier, 2A, 2B, 2C!
, 2D. 2B, 2F... Ship hold, 16... Solid gas separation device, 18... Loading pipe, 31...
... Suction port, 32 ... Powder material infiltration prevention plate, 38
...Flexible hose, 39...Injection nozzle, 43...Cylinder, 44...
・Link, 45...Reflector, 47...
Rotation vertical axis.

Claims (1)

[Claims] 1. A solid gas separation device is installed on the upper part of a closed ship, a pneumatic loading pipe is installed outside the ship, a charging nozzle branched from this loading pipe is opened at the top of the ship, and the direction of this charging nozzle is changed. What is claimed is: 1. A powder and granular material carrier, characterized in that a reflector capable of changing direction is provided in the upper part of the ship's hold.