JP2019147670A - Bulk storage facility and bulk carrier - Google Patents

Abstract

To provide a bulk storage facility capable of reducing a dead space below a bottom wall of a storage compared to a conventional bulk storage facility, and suppressing a facility cost compared to a conventional storage facility.SOLUTION: A bulk storage facility includes: a storage having a storage chamber formed by a first side wall, a second side wall facing away from the first side wall in a width direction, and a bottom wall connecting the first side wall and the second side wall in the width direction and provided with a put-out port at a lower part of the second side wall; a stacking conveyor for transferring a bulk material to an upper part of the storage chamber or an upper predetermined input position; and a put-out conveyor disposed adjacent to the put-out port in the width direction, having a lower transfer surface than the put-out port, and configured to transfer the bulk material put out from the put-out port to a designated location.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bulk storage facility for storing bulk materials and a bulk carrier including the bulk storage facility.

  Conventionally, a bulk storage facility equipped with a cargo handling device is known. Bulk material is a general term for cargo that is transported in an unpacked state such as powder and granules, and examples thereof include coal, minerals, grains, wood chips, gravel, and the like. Patent Documents 1 to 3 disclose this kind of bulk storage facility.

  The bulk material storage facility of Patent Document 1 includes a hopper-type storage, and a payout device (loading device) that discharges bulk material from a payout opening provided on the bottom wall of the storage. The dispensing device is provided along the bottom wall of the storage, and is a rotary scraper that scrapes the loose material into the dispensing outlet, and a dispensing device that is disposed below the dispensing outlet and conveys the falling material from the dispensing outlet to a predetermined place. For conveyors.

  The bulk storage equipment of Patent Documents 2 and 3 includes a storage having a rectangular cavity, a receiving conveyor arranged along the edge of the storage, and a tripper device for moving the bulk on the receiving conveyor to the opening side of the storage. A loading / dispensing device for receiving the bulk material from the tripper device, depositing the bulk material in the storage, and carrying the bulk material from above the storage. The loading / dispensing device includes a horizontal conveyor for receiving the bulk material from the tripper device, a shuttle conveyor disposed below the horizontal conveyor, and a bucket conveyor device. The bucket conveyor device includes a cylinder that moves the lower end of the bucket conveyor up and down to adjust the payout height, and a cylinder that moves the upper end of the bucket conveyor up and down to eliminate the deflection of the conveyor. In the bulk storage facility configured as described above, when the bulk material in the storage is to be dispensed, the bulk material in the storage is lifted up to the horizontal conveyor by the bucket conveyor device, and the bulk material is lifted from the horizontal conveyor via the shuttle conveyor to the edge of the storage. It is conveyed to the discharge conveyor arranged along.

JP-A-11-124194 JP 7-277519 A JP-A-7-277520

  The bulk storage facility of Patent Document 1 has a problem that since the dispensing device is at the lower part of the storage, the total height of the storage is increased, the equipment cost is increased, and a dead space is also generated at the lower part of the storage. On the other hand, since the bulk storage facilities of Patent Documents 2 and 3 do not require a payout mechanism to be provided at the lower part of the storage, the overall height of the storage facility is reduced and the dead space below the storage is reduced. Can do. However, the bulk storage facilities of Patent Documents 2 and 3 have a large number of conveyors, and the mechanism of the bucket conveyor device is complicated.

  The present invention has been made in view of the above circumstances, and its purpose is to reduce the dead space below the bottom wall of the storage compared to the conventional bulk storage facility exemplified in Patent Document 1, and The object of the present invention is to provide a structure of a bulk storage facility that can reduce the facility cost as compared with conventional storage facilities exemplified in Patent Documents 1 to 3.

The bulk material storage facility according to one aspect of the present invention includes:
A storage chamber formed by a first side wall, a second side wall facing the first side wall in the width direction, and a bottom wall connecting the first side wall and the second side wall in the width direction. And a storage room provided with a discharge outlet at a lower portion of the second side wall;
A stacking conveyor for transporting bulk material to a predetermined input position above or above the storage chamber;
A payout conveyor disposed adjacent to the payout port in the width direction, having a lower conveyance surface than the payout port, and carrying the bulk material exiting from the payout port to a predetermined place. It is a feature.

  In the bulk storage facility having the above-described configuration, the bulk material introduced into the storage chamber by the stacking conveyor is piled up in the storage chamber. The bulk material in the storage chamber flows out from the discharge outlet, falls on the transfer surface of the discharge conveyor, and is transferred to a predetermined place by the discharge conveyor.

  In the bulk storage facility having the above-described configuration, no element for dispensing is disposed below the bottom wall of the storage, so that it can be used as a storage to an allowable lower limit position. Therefore, the dead space below the bottom wall of the storage can be reduced as compared with the conventional bulk storage facility exemplified in Patent Document 1. In addition, in the bulk storage facility configured as described above, the bulk material in the storage chamber moves to its transport surface by its own weight. Therefore, the bucket conveyor (that is, means for lifting the bulk material in the storage chamber to the discharge conveyor) provided in the conventional storage facility exemplified in Patent Documents 2 and 3 is unnecessary, and the structure of the bulk storage facility is simplified. Therefore, the bulk storage facility having the above-described configuration can reduce the facility cost as compared with the conventional storage facilities exemplified in Patent Documents 1 to 3.

  In the above bulk storage facility, the charging position may be closer to the second side wall than the center in the width direction from the first side wall to the second side wall.

  As a result of the falling material falling into the storage chamber from such a loading position, the top of the peak of the bulk material formed in the storage chamber is closer to the second side wall than the center in the width direction from the first side wall to the second side wall. To position. As a result, compared to the case where the top of the pile of loose materials is located closer to the first side wall than the center in the width direction from the first side wall to the second side wall, Bulk material reaches the exit. When the bulk material accumulates to a level higher than the discharge port, the amount of the bulk material flowing out from the discharge port becomes stable. Therefore, compared to the case where the top of the bulk of the loose material is located on the first side wall side from the center in the width direction from the first side wall to the second side wall, the top of the top of the bulk of the bulk is low. The amount of loose material flowing out from the can be stabilized.

  In the above bulk storage facility, the bottom wall may have a slope that gradually increases from the first side wall toward the second side wall, and a drain port may be provided at the lowest part of the bottom wall.

  Water such as rainwater or seawater may adhere to the surface of the loose material. Such water falls by its own weight to the bottom wall through the gaps of the accumulated bulk material. Since the bottom wall has the above inclination, the water that has dropped onto the bottom wall flows to the drain port on the surface of the bottom wall and is discharged from the drain port to the outside of the storage chamber. Thereby, water can be prevented from accumulating in the storage chamber.

  In the above bulk storage facility, the storage may include a shutter that changes an opening degree of the discharge outlet.

  By closing this shutter and making the opening degree of the discharge outlet zero, the outflow of the bulk material from the discharge outlet can be prevented. Further, by changing the opening degree of the payout port by the shutter, the amount of loose matter flowing out from the payout port can be adjusted.

  In the above bulk storage facility, the discharge conveyor includes a horizontal conveyor that receives the bulk dropped from the discharge outlet, and a vertical conveyor that transports the bulk vertically from the storage chamber. Good.

  Thereby, the bulk material stored in the storage room can be paid out to a position higher than the storage room.

  A bulk carrier according to one embodiment of the present invention includes the above-described bulk storage facility.

  The above-described bulk storage facility is suitable as a storage facility installed in a limited space such as a hull because no element for dispensing is disposed below the bottom wall of the storage.

  According to the present invention, the dead space below the bottom wall of the storage is reduced as compared with the conventional bulk storage facility, and the bulk storage can reduce the equipment cost as compared with the conventional storage facility. Equipment structure can be provided.

FIG. 1 is a side view showing an overall configuration of a bulk storage facility according to an embodiment of the present invention. FIG. 2 is a view taken along arrow II in FIG. FIG. 3 is a diagram in which the bulk storage facility is applied to a bulk carrier.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an overall configuration of a bulk storage facility 100 according to an embodiment of the present invention, and FIG. 2 is a view taken in the direction of arrow II in FIG.

  The bulk storage device 100 shown in FIGS. 1 and 2 has a storage 1 having a storage chamber 10 therein, a loading conveyor 2 for transporting the bulk 9 to the storage chamber 10, and a bulk 9 in the storage chamber 10. And a delivery conveyor 3 for transporting to the place.

  The storage 1 has a first side wall 11, a second side wall 12, and a bottom wall 13. The first side wall 11 and the second side wall 12 are opposed to each other in the width direction W. The bottom wall 13 connects the lower end of the first side wall 11 and the lower end of the second side wall 12 in the width direction W. A substantially rectangular storage chamber 10 is defined by a plurality of walls including the first side wall 11, the second side wall 12 and the bottom wall 13. In addition, although a pair of wall orthogonal to the 1st side wall 11 and the 2nd side wall 12 is not shown in FIG. 1, the storage 1 may be provided with these pair of walls.

  One or more outlets 16 are provided at the lower end portion of the second side wall 12. The outlet 16 is an opening that penetrates the second side wall 12 in the horizontal direction. In the example shown in FIG. 2, two outlets 16 are provided on the second side wall 12.

  The discharge port 16 is provided with a shutter 41 for opening and closing the opening. The shutter 41 can reciprocate in a range from a position where the discharge outlet 16 is closed to a position where the discharge outlet 16 is completely opened. Further, the shutter 41 can partially close the opening of the discharge port 16, and the opening degree of the discharge port 16 can be changed depending on the position of the shutter 41. The shutter 41 is moved by the shutter driving device 42. The shutter driving device 42 may be one or more of known actuators such as a fluid pressure cylinder, an electric cylinder, and an electric motor.

  The bottom wall 13 has an inclination that gradually increases from the first side wall 11 side toward the second side wall 12. Due to the inclination of the bottom wall 13, the lower end level H <b> 1 of the second side wall 12 is higher than the floor level H <b> 0, and the conveying surface level (first horizontal conveyor 31) of the discharge conveyor 3 that receives the bulk material 9 flowing out from the discharge outlet 16. Higher than the transfer surface level H2). The lower end level of the first side wall 11 is referred to as “floor level H0”. Such an inclination of the bottom wall 13 may be in the range of 2% (2/100) to 5% (5/100), for example.

  A drain port 17 is provided at the end of the bottom wall 13 on the first side wall 11 side, that is, at the lowest portion of the bottom wall 13. The water droplets that have fallen on the bottom wall 13 flow on the surface toward the first side wall 11 due to the inclination of the bottom wall 13 and are discharged from the drain port 17.

  The storage 1 according to the present embodiment has a ceiling wall 14 that closes the upper side of the storage chamber 10, and an indoor storage chamber 10 is formed. However, the ceiling wall 14 may be omitted, and the outdoor storage room 10 may be formed in the storage 1. An input port 15 is provided in the ceiling wall 14. The insertion port 15 is located closer to the second side wall 12 than the center C in the width direction W between the first side wall 11 and the second side wall 12.

  The end of the stacking conveyor 2 is located above the charging port 15, and conveys the bulk material 9 to the charging position P above the charging port 15. In the bulk material storage facility 100 according to the present embodiment, the charging position P is located above the storage chamber 10, but the charging position P may be an upper part in the storage chamber 10. The structure of the stacking conveyor 2 is not specifically limited, For example, you may be comprised by the combination of a horizontal conveyor and a vertical conveyor.

  The discharge conveyor 3 includes one or more conveyors adjacent to the discharge outlet 16 in the width direction W and having a lower conveyance surface than the discharge outlet 16. The dispensing conveyor 3 according to the present embodiment includes a first horizontal conveyor 31, a second horizontal conveyor 32, and a vertical conveyor 33. However, the configuration of the payout conveyor 3 is not limited to this embodiment, and may be appropriately configured so that the loose material 9 that has come out from the payout port 16 can be conveyed to a predetermined location.

  The first horizontal conveyor 31 is disposed adjacent to the discharge outlet 16 in the width direction W and extends horizontally along the second side wall 12. The conveyance surface level H <b> 2 of the first horizontal conveyor 31 is lower than the lower end level H <b> 1 of the second side wall 12. The second horizontal conveyor 32 is disposed below the first horizontal conveyor 31 and extends horizontally along the second side wall 12. The vertical conveyor 33 is arranged so as to be connected to the end of the second horizontal conveyor 32, and extends vertically above the storage 1.

As described above, the bulk storage facility 100 of the present embodiment is
The first side wall 11, the second side wall 12 facing the first side wall 11 in the width direction W, and the bottom wall 13 connecting the first side wall 11 and the second side wall 12 in the width direction W are formed. A storage room 1 having a storage chamber 10 and a discharge outlet 16 provided in the lower part of the second side wall 12;
A stacking conveyor 2 for transporting the bulk material 9 to a predetermined charging position P above or above the storage chamber 10;
The payout outlet 16 is disposed adjacent to the width direction W, has a lower conveyance surface than the payout opening 16, and includes a payout conveyor 3 that conveys the bulk material 9 exiting from the payout opening 16 to a predetermined place.

  In the bulk storage facility 100 having the above-described configuration, the bulk 9 conveyed to the loading position P by the loading conveyor 2 falls into the storage chamber 10 through the loading port 15 and is stacked on the bottom wall 13. The bulk material 9 in the storage chamber 10 is piled up on the bottom wall 13. The bulk material 9 that has reached the discharge outlet 16 flows out of the discharge outlet 16 by its own weight, falls on the transfer surface of the discharge conveyor 3, and is transferred to a predetermined place by the discharge conveyor 3.

  Note that a self-propelled working machine 8 having a blade for pushing the loose material 9 may be introduced into the storage chamber 10. The work machine 8 is provided with the bottom wall 13 when the bulk material 9 accumulated on the bottom wall 13 is reduced to such an extent that it is not sufficiently discharged from the discharge port 16 or when the discharge failure of the discharge port 16 occurs. The bulk material 9 accumulated in the forcibly is pushed out toward the discharge outlet 16.

  In the bulk storage facility 100 having the above-described configuration, no element for dispensing (that is, the dispensing conveyor 3) is disposed below the bottom wall 13 of the storage 1. Therefore, it can be used as the storage 1 up to an allowable lower limit position (for example, the floor level H0). Therefore, the dead space below the bottom wall 13 of the storage 1 can be reduced as compared with the conventional bulk storage facility exemplified in Patent Document 1. In addition, in the bulk material storage facility 100 configured as described above, the bulk material 9 in the storage chamber 10 moves to the transport surface of the dispensing conveyor 3 by its own weight. Therefore, the bucket conveyor (that is, means for lifting the bulk material in the storage chamber 10 to the discharge conveyor) provided in the conventional storage facility exemplified in Patent Documents 2 and 3 is not required, and the structure of the bulk storage facility 100 is simple. It becomes. Therefore, the bulk storage facility 100 having the above-described configuration can reduce the facility cost as compared with the conventional storage facilities exemplified in Patent Documents 1 to 3.

  Further, in the bulk material storage facility 100 of the present embodiment, the throwing position P of the bulk material 9 is closer to the second side wall 12 than the center C in the width direction W from the first side wall 11 to the second side wall 12.

  As a result of the falling material 9 falling from the charging position P to the bottom wall 13, the peak portion 9 p of the mountain 9 of the loose material 9 formed in the storage chamber 10 has a width direction from the first side wall 11 to the second side wall 12. It is located closer to the second side wall 12 than the center C of W. Thereby, compared with the case where the peak 9p of the peak of the loose material 9 is located on the first side wall 11 side from the center C in the width direction W from the first side wall 11 to the second side wall 12, the peak of the bulk 9 The bulk material 9 arrives at the discharge outlet 16 from the stage where the top portion 9p is low. When the bulk material 9 is accumulated to a level higher than the discharge port 16, the amount of the bulk material flowing out from the discharge port 16 is stabilized. Therefore, compared with the case where the peak 9p of the peak of the loose material 9 is located closer to the first side wall 11 than the center C in the width direction W from the first side wall 11 to the second side wall 12, From the stage where the top portion 9p is low, it is possible to stabilize the amount of loose matter flowing out from the discharge outlet 16.

  Further, in the bulk material storage facility 100 of the present embodiment, the bottom wall 13 has an inclination that gradually increases from the first side wall 11 side toward the second side wall 12, and the drain port 17 is located at the lowest portion of the bottom wall 13. Is provided.

  Water such as rainwater or seawater may adhere to the surface of the bulk material 9. Such water falls to the bottom wall 13 through the gaps between the accumulated bulks 9. Due to the inclination of the bottom wall 13, the water dropped on the bottom wall 13 flows through the surface of the bottom wall 13 to the drain port 17 and is discharged from the drain port 17 to the outside of the storage chamber 10. Thereby, water can be prevented from accumulating in the storage chamber 10.

  Moreover, in the bulk storage apparatus 100 of this embodiment, the storage 1 has the shutter 41 which changes the opening degree of the discharge outlet 16. FIG.

  By closing the shutter 41 and setting the opening degree of the discharge outlet 16 to zero, it is possible to prevent the loose substance 9 from flowing out of the discharge outlet 16. Further, by changing the opening degree of the payout opening 16 by the shutter 41, the amount of the bulk material 9 flowing out from the payout opening 16 can be adjusted.

  In the bulk storage facility 100 of the present embodiment, the payout conveyor 3 includes a horizontal conveyor (first horizontal conveyor 31) that receives the bulk 9 dropped from the payout outlet 16, and the bulk 9 above the storage chamber 10. And a vertical conveyor 33 for conveying in the vertical direction.

  According to such a delivery conveyor 3, the bulk material 9 stored in the storage chamber 10 can be discharged to a position higher than the storage chamber 10. The vertical conveyor 33 does not need to be provided for each storage 1, and a single vertical conveyor 33 may be provided for the plurality of storages 1. Thereby, generally, since the number of the vertical conveyors 33 where the equipment cost increases compared with the horizontal conveyors 31 and 32 can be reduced, the equipment cost of the bulk storage equipment 100 can be suppressed.

  Next, an application example of the bulk material storage facility 100 will be described.

  The bulk material storage facility 100 is installed on land, for example. In this case, the storage 1 may be a ground type, an underground type, or a semi-underground type. In the bulk storage facility 100, since the delivery conveyor 3 is not disposed below the bottom wall 13, the overall height of the bulk storage facility 100 can be suppressed, and maintenance of the delivery conveyor 3 is facilitated.

  The bulk storage facility 100 is installed in a bulk carrier, for example. In general, a bulk ship carrying a bulk cargo is provided with a ballast tank called a top side tank. In general, there are bulk carriers with and without cargo handling devices. The bulk storage facility 100 may be provided in the bulk carrier 51 as an installation facility from the time of shipbuilding, or may be installed later on a bulk carrier that does not have a cargo handling device.

  FIG. 3 is a diagram in which the bulk storage facility 100 is applied to the bulk carrier 51. A bulk carrier 51 shown in FIG. 3 includes a hull 56 provided with a ballast tank 55. The storage chamber 10 is formed in the ballast tank 55 by partitioning the inside of the ballast tank 55 by the second side wall 12. The first side wall 11 of the storage 1 is formed using the side wall of the ballast tank 55.

  A bottom member 57 is installed on the bottom of the ballast tank 55. On the upper surface of the bottom member 57, an inclination that increases from the first side wall 11 toward the second side wall 12 is provided. The bottom wall 13 of the storage 1 is formed by the bottom member 57 and the bottom wall of the ballast tank 55. As described above, the bottom wall 13 of the storage 1 may use the bottom wall of the ballast tank 55.

  A loading position P is defined in the upper part of the storage chamber 10, and a stacking conveyor 2 for conveying the bulk material 9 to the loading position P is provided.

  The payout conveyor 3 includes a first horizontal conveyor 31, a second horizontal conveyor 32, and a vertical conveyor 33 provided adjacent to the second side wall 12. The end of the vertical conveyor 33 is connected to the transshipment conveyor 53. The transshipment conveyor 53 is a conveyor that conveys the bulk material 9 from the bulk carrier 51 to the second bulk carrier 52.

  As described above, the bulk storage facility 100 is suitable as a storage facility installed in a limited space such as the hull 56 because no element for dispensing is disposed below the bottom wall 13 of the storage 1. is there. That is, in the bulk carrier 51, the height of the ballast tank 55 is limited, but the bulk storage device 100 does not have an underground structure, so that the storage 1 having a sufficient volume can be secured within the limit. In addition, if a cargo handling device having an underground structure is installed on an existing bulk carrier 51, it will be expensive to construct a new underground structure, but the bulk storage facility 100 that does not have an underground structure can reduce the installation cost. .

  Although the preferred embodiments of the present invention have been described above, modifications to the specific structure and / or function details of the above embodiments may be included in the present invention without departing from the spirit of the present invention. .

1: Storage 2: Loading conveyor 3: Discharge conveyor 8: Work machine 9: Bulk material 9p: Top 10: Storage room 11: 1st side wall 12: 2nd side wall 13: Bottom wall 14: Ceiling wall 15: Input port 16 : Discharge port 17: Drain ports 31 and 32: Horizontal conveyor 33: Vertical conveyor 41: Shutter 42: Shutter drive devices 51 and 52: Bulk carrier 53: Transshipment conveyor 55: Ballast tank 56: Hull 57: Bottom member 100: Bulk material Storage equipment

Claims (6)

A storage chamber formed by a first side wall, a second side wall facing the first side wall in the width direction, and a bottom wall connecting the first side wall and the second side wall in the width direction. And a storage room provided with a discharge outlet at a lower portion of the second side wall;
A stacking conveyor for transporting bulk material to a predetermined input position above or above the storage chamber;
A payout conveyor that is disposed adjacent to the payout port in the width direction, has a lower conveyance surface than the payout port, and conveys the bulk material from the payout port to a predetermined place;
Bulk storage equipment. The charging position is on the second side wall side from the center in the width direction from the first side wall to the second side wall;
The bulk material storage facility according to claim 1. The bottom wall has a slope that gradually increases from the first side wall toward the second side wall, and a drain port is provided at the lowest portion of the bottom wall;
The bulk material storage facility according to claim 1 or 2. The storage has a shutter for changing an opening degree of the payout port;
The bulk storage apparatus as described in any one of Claims 1-3. The discharge conveyor includes a horizontal conveyor that receives the bulk material dropped from the discharge port, and a vertical conveyor that transports the bulk material in a vertical direction above the storage chamber.
The bulk storage apparatus as described in any one of Claims 1-4. Comprising the bulk storage device according to any one of claims 1 to 5,
Bulk carrier.

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