JPS5845395B2 - 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 the method of loading powder and granules transported from the land side with gases (air, inert gas, nitrogen, etc.) into the lead section, it is important to separate the powder and granules sent into the lead section from the gas as quickly as possible. preferable.

By the way, in the initial state of loading inside the lead section, separation is possible within the large lead section within t-1, and relatively easy separation is possible, but as the loading progresses and the space inside the lead section decreases, this separation becomes difficult. It becomes very difficult.

This is because the newly sent gas powder is blown onto the powder and granules stacked in the γS, ie, lead section, and the powder and granules that have already been stacked are stirred.

This further makes it impossible to load granules up to the top and into the gaps within the lead section.

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, which has a plurality of closed lead parts 2A, 2B (six in the example) in the bow and aft direction.
2C, 2D, 2E, 2F and has a central conveyor section 3.

The lead parts 2A to 2F a [In cross section, left and right ship bottom parts 6A and 6B are formed by the safety hopper 4 and side hoppers 5A and 5B, and further formed into a wavy bottom hopper 7 in longitudinal cross section.

Screw conveyors 8A, 8B extending toward the inside of the ship 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 floor 1j knee conveyor 8A, 8B is a case IO
They are each driven by drive devices 11A and 11B attached to A and 10B, respectively.

Chain conveyors 12A, 12B of the bow and stern are arranged in the cases IOA, 10B, and the ends of these chain conveyors 12A, 12B reach the central conveyor section 3.

Inside this central conveyor section 3, the chain conveyor 12A is installed at the receiving port.

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 positioned toward the upper deck 14.

A solid gas separation device 16 consisting of a cyclone, a bag filter, etc. is provided in four of the lead sections 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.

Furthermore, 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 of the lead sections 2A to 2F.

Reference numeral 20 denotes a fixed chain conveyor whose starting end is connected to the discharge port 15 of the buff single conveyor 13, and at its terminal end there is disposed a rotating chain conveyor 21 that can be swung out of the ship.

22 is a discharge mobile fan, 23 (1 discharge tube, each lead part 2A
~A husband and wife will be provided 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 is an inert waste supply pipe 26 for the crosslinking prevention device.
, an inert gas supply pipe 27 to the screw conveyors 8A, 8B, and an inert gas supply pipe 28 to the chain conveyors 12A, 12B are installed.

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

In FIGS. 4 and 5, a plurality of granular material intrusion prevention plates 32 are provided around the suction port 31 of the solid gas separator (bag filter) 16 at the upper part of the lead sections 2A to 2F.

That is, each particle infiltration prevention plate 32 is installed in a row from the lower surface of the lead ceiling wall 33 downward and inward, and its inclination angle θ
Although it is influenced by the angle of repose of the powder, it is preferably about 30 degrees.

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 37 having a valve 36 is branched from the loading pipe 18, and this is passed through the ceiling wall 33 to connect the lead parts 2A to 2F.
The injection nozzle 38 is located at the inner (ζ) position.

Reference numeral 39 denotes a reflecting plate vertically disposed from the ceiling wall 33, and is positioned in the charging direction 40 of the charging nozzle 38.

Reference numeral 41 denotes a plurality of guide plates, which are arranged in an elliptical shape (or a perfect circle) surrounding the reflecting plate 39, and each guide plate has a circular hole inner surface 41a.
This forms a circular guide surface (a discontinuous cylindrical surface or an inverted conical surface).

A portion of each guide plate 41 is configured as a movable guide plate 42.

In other words, each guide plate 41 is vertically installed from the ceiling wall 33, and the movable guide plate 42 is fixed to a rotating vertical shaft 44 supported by the ceiling wall 33 and a bracket lift 43.
The direction can be changed manually by operating a handle 45 attached to the upper end of the handle 4, but this may also be done by remote control.

Note that the orientation change position (can also be fixed).

Explain the work at the loading dock.

With the powder transport ship 1 moored at the loading port, the powder transport pipe 29 from the loading port is connected to the loading pipe 18 as shown by 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 dock side is sent into each of the lead sections 2A to 2F via the powder and granular material transport pipe 29 and the loading storage 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:
From the branch pipe 37 through the input nozzle 38 to the lead parts 2A to 2F.
It is sent inside.

At this time, the powder and the gas first collide with the reflecting plate 39, and as a result, the large particles are separated due to the difference in gravity, leading to the lead part 2A.
- It fell into the 2nd floor and was stowed away.

Further, the remaining gas containing the powder is reflected from the reflecting plate 39 and moves to the guide plate 41 side.

At this time, the movable guide plate 41 is in a position forming an arcuate inner surface 41a together with the fixed guide plate 41, and therefore the gas flows through the arcuate inner surface /4 as shown by the solid line and dotted line A in FIG.
1a, and thus →knife separation is performed here.

As a result, the powder and granules are separated from the gas and stacked.

In addition, the ultrafine powder and the like flow toward the solid gas separator 16 together with the inert gas, and a portion 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 transferred to the inert gas recovery pipe 17゜3.
The movable guide plate 42 is recovered when the powder and granules are piled up and slid to near the top of the lead sections 2A to 2F. One of them, for example, the one shown by the imaginary line A in FIG. 2, is rotated about the vertical axis.

Then, the arcuate inner surface of the movable guide plate 42 will obstruct the cyclone flow, and the powder and granules will be guided by this arcuate inner surface and flow in the direction B, and will be sent to the corners of the lead sections 2A to 2F. Furthermore, 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 holds 2A to 2F, is stored in the inert gas on the upper deck 14. An inert gas generated by the generator 24 is used.

As described above, according to the present invention, during normal loading, the arcuate inner surface formed by the movable guide plate sometimes produces a cyclone effect, thereby promoting the separation of powder and gas. Can be done.

Furthermore, by rotating the movable guide plates one by one when loading approaches the end, the powder and granules are guided by the movable guide plates and their flow changes, thereby allowing them to be distributed in every corner of the hold. It can be stacked up to.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a vertical side view of a ship, Fig. 2 is a plan view, Fig. 3 is a plan sectional view, Fig. 4 is a cross-sectional front view, and Fig. 5 (1 main part). It is a partially cutaway plan view of the part. 1... Powder carrier, 2A, 2B, 2C, 2D
. 2E, 2F... Ship hold, 16... Solid gas separation device, 18... Loading pipe, 31...
... Suction port, 32 ... Powder material infiltration prevention plate, 33
...Ship ceiling wall, 37 ... Branch pipe, 3
8...Input nozzle, 39...Reflector,
40... Input direction (41... Guide board,
41a... Arc inner surface, 42... Movable guide plate.

Claims (1)

[Claims] 1. A solid gas separator is installed in the upper part of the sealed lead part, a pneumatic loading pipe is arranged outside the lead part, a pneumatic loading nozzle is branched from this loading pipe and opened at the upper part of the lead part, and this charging nozzle A reflector located in the projection direction is hung vertically from the ceiling wall of the lead section, a guide plate is provided to form a circular guide surface surrounding the reflector, and multiple locations of this guide plate are configured as movable guide plates. A powder and granular material carrier featuring: