JP5133924B2 - Cargo hold air slide structure of cement carrier - Google Patents

Description

  The present invention relates to a cargo hold air slide structure for a cement carrier.

  Conventionally, there is a cement carrier as a ship that is filled with powdered or granular materials such as cement and transported into a ship. For example, Japanese Patent Application Laid-Open No. 2006-131093 discloses a cargo handling apparatus for a cement carrier of this type. The one disclosed in Japanese Patent Application Laid-Open No. 2006-131093 relates to the name of the invention “powder feeder of powder cargo ship”, and “reduces the powder in the hold, reducing the labor and cost of production and installation, etc. For the purpose of “providing a powder feeder for a powder cargo ship capable of increasing the volume to be mounted” (see paragraph number 0005 of the same gazette specification), “a plurality of combinations are inclined and arranged at the top of the cargo hold. A powder feeder for a powder cargo ship having an air slide member that blows air out of the flat vent sheet and moves the powder loaded thereon obliquely downward, wherein the air slide member is A flat plate formed by arranging a plurality of vent holes, the vent sheet covering the vent holes and closely fixed around the flat plate, a duct for supplying compressed air to the vent holes, The plane plate By having a supporting member that is fixed in the hold (see the description of claim 1 of the same patent claim), "the manufacturing is easy and the transportation and the installation are unnecessary, so the cost can be reduced. In addition, the height of the flat plate can be reduced, and as a result, the volume capable of mounting the powder in the hold can be increased ”(see paragraph number 0007 of the publication). That is, this type of cement carrier has a cargo hold air slide structure as schematically shown in FIGS.

  FIG. 5 is a diagram showing an outline of a cargo hold air slide structure of a conventional cement carrier, in which FIG. 5 (A) is a side view of the cement carrier and FIG. 5 (B) is a double bottom portion thereof. A plan view and FIG. 5C are central cross-sectional views. 6 is an enlarged view of the double bottom plan view shown in FIG. 5 (B), and FIG. 7 is an enlarged view of the central cross-sectional view shown in FIG. 5 (C). FIG. 8 is an enlarged view of an air slide portion that guides the cement to the flow conveyor 110 when carrying out the cement as the load. 5-8, the code | symbol 100 is a cement carrier, 101,102,103,104 is each cargo hold, 105 is an engine room, 106,107,108,109 is each said cargo hold 101,102,103. , 104 is a ballast tank, 110 is a flow conveyor provided through the center of the cargo hold, 111 is an air slide placed at the bottom of each cargo hold 101, 102, 103, 104, 112 is the same Prevents pile-type cement accumulation.

5 (C), 7 and 8, 113 is a cut gate for adjusting the flow rate of cement as a load, 115 is an upper inclined cover, and 114 is carrying out the cement as a load. In this case, it is a canvas that guides the cement to the flow conveyor 110, and the mountain-shaped cement pool prevention 112 is provided at both ends of the canvas 114 via connecting bolts and nut portions 116. The canvas 114 is a fabric made of hemp or cotton, and wind is sent to the canvas 114 by an unillustrated compressor to the opening 121 that opens between the canvas supporting steel plate 117 and the canvas 114, and the canvas 114 is subjected to wind pressure. It is configured to cause the vibration to cause the cement deposited on the canvas 114 to move toward the flow conveyor 110.
In FIG. 7, reference numeral 117 denotes the canvas supporting steel plate, 118 denotes the ship bottom outer plate, 119 denotes the upper part of the ballast tank, and 120 denotes the air piping space.

  In such a hold structure of the cement carrier 100, the cement is loaded as it is in the cargo holds 101, 102, 103, 104 as it is. The flow conveyor 110 provided through the section is moved so that cement flows into the flow conveyor 110 and is conveyed outside the ship by a bucket conveyor (not shown). At the time of carrying out the cement, wind is sent to the canvas supporting steel plate 117 below the canvas 114 by an unillustrated compressor, and the canvas 114 is vibrated by the wind force. Due to this vibration, cement as a load is transferred to the flow conveyor 110. In order to efficiently guide the cement as a load to the canvas 114 so as not to collect in one place at this time, a mountain-shaped cement accumulation prevention 112 is provided between the canvases 114.

JP 2006-131093 A

  However, since the cargo hold air slide structure of the cement carrier 100 described above is provided with the mountain-shaped cement pool prevention 112 between the air slides 111, each cargo hold (cement hold) 101, 102 of the cement carrier 100, 103 and 104, the weld length is long and the workability is poor, and in particular, the cement puddle (residue) is formed in the gap between the hull structure below the chevron-type cement puddle prevention 112 and the air slide 111. As a result, there is a problem that mixing occurs with the next loaded cargo. Therefore, the traffic in the cargo holds 101, 102, 103, 104 of the cement carrier 100 is good, the welding length is shortened and the workability is good, and the hull structure below the mountain-shaped cement pool 112 and the air slide 111 It is an object of the present invention to provide a cargo hold air slide structure for a cement carrier that does not cause cement accumulation (residue) in the gap between them and that does not cause cargo mixing.

In the cargo slide air slide structure of a cement carrier, the invention according to claim 1 of the present invention is such that a flow conveyor is arranged linearly along the ship center line at the bottom of the cargo carrier of the cement carrier, and a plurality of cements are provided along the flow conveyor. A discharge cut gate is provided, and a cement distribution mountain having a substantially trapezoidal shape in the central cross section is provided in the center of the hull between the cut gates, and there is no gap across the entire surface from the ship side to the center of the hull. A large-capacity compressor and a large-diameter blower pipe that gradually narrows the end on the canvas side when laying a plurality of sloping wide and large canvases arranged in the vertical direction of the hull and carrying out cement as cargo The canvas is blown to the canvas, and the canvas is vibrated. Through Togeto is set to the flow conveyor disposed near the hull center line, characterized by conveying overboard.

Since this invention is comprised as mentioned above, there exists an effect described below.
Good transportability within the cargo hold of the cement carrier, good weldability, good workability, no accumulation (residue) in the gap between the hull structure at the bottom of the chevron and the air slide 111, resulting in mixing of cargo There is no effect.
In addition, by constricting the end of the blow pipe that blows air to the canvas, the air discharged from the blow pipe is turbulent, and the canvas can be vibrated more, and the cement is arranged more efficiently near the hull center line. The flow conveyor 110 can be easily assembled.
Furthermore, providing the cement distribution pile 3 at the center of the hull has an effect of facilitating guiding the cement to each cut gate 113.

FIG. 1 (A) is a side view of a cement carrier having a cargo hold air slide structure of the cement carrier according to the first embodiment, and FIG. 1 (B) is a plan view of the double bottom, FIG. ) Is a central cross-sectional view. FIG. 2 is an enlarged view of the double bottom shown in FIG. FIG. 3 is an enlarged view of the central cross-sectional view shown in FIG. 1 (C), and is an enlarged view of a newly provided cement distribution mountain 3 portion. FIG. 4 is an enlarged view of the cargo hold air slide structure of the cement carrier according to the first embodiment. 5 (A) is a side view of the cement carrier, FIG. 5 (B) is a plan view of the double bottom, and FIG. 5 (C) is a central cross-sectional view. FIG. 6 is an enlarged view of the double bottom plan view shown in FIG. FIG. 7 is an enlarged view of the central cross-sectional view shown in FIG. FIG. 8 is an enlarged view of an air slide portion that guides the cement to the flow conveyor 110 when carrying out the cement as a load.

  An embodiment will be described in detail with reference to the drawings as a mode for carrying out a cargo hold air slide structure of a cement carrier according to the present invention.

  1 to 4 are schematic views showing Example 1 of a cargo hold air slide structure of a cement carrier which is an example of a mode for carrying out a cargo hold air slide structure of a cement carrier according to the present invention, 1A is a side view of a cement carrier having a cargo hold air slide structure of the cement carrier according to the first embodiment, FIG. 1B is a plan view of the double bottom, and FIG. FIG. 2 is an enlarged view of the double bottom shown in FIG. 1 (B), and FIG. 3 is an enlarged view of the central cross-sectional view shown in FIG. 1 (C). It is a figure which expands and shows a part. FIG. 4 is an enlarged view of the cargo hold air slide structure of the cement carrier according to the first embodiment. In the cargo hold air slide structure 1 of the cement carrier according to the first embodiment, the conventional mountain-type cement pool is shown. The prevention 112 is abolished and a canvas 2 and a cement distribution pile 3 having a new shape are arranged.

1 and 4, reference numeral 1 denotes a cargo hold air slide structure for a cement carrier according to the first embodiment, and reference numeral 2 denotes a new cargo hold air slide structure 1 for a cement carrier according to the first embodiment. The provided canvas 2 and reference numeral 3 are cement distribution piles newly provided in the cargo hold air slide structure 1 of the cement carrier according to the first embodiment.
Moreover, in FIG. 1, FIG. 4, the same member as the member shown in FIGS. 5-8 is shown with the same code | symbol, and the detailed description is abbreviate | omitted.

As shown in FIGS. 1 to 4, in the cargo hold air slide structure 1 of the cement carrier according to the first embodiment, the mountain-shaped cement pool prevention 112 that has been conventionally arranged is abolished, and is large on the entire bottom surface of the cargo hold. A new air slide structure 1 including a shape canvas 2 and a cement distribution pile 3 is arranged.
That is, as shown in FIG. 4, the conventional pile-type cement puddle 112 is abolished, and the canvas 2 having a width about three times that of the conventional canvas 114 is formed on the entire surface of the arrangement position of the pile-type cement puddle prevention 112. It is laid without a gap in the direction. Furthermore, a cement distribution pile 3 is provided in the center of the hull so that the cement fed from above is guided to each cut gate 113 without staying in one place in the cargo hold. A cement distribution pile 3 is provided between the cut gates 113 at the center of the hull.
Further, for example, in the cargo hold air slide structure 1 of the cement carrier according to the first embodiment, the cross-sectional area of the blower pipe (not shown) is about three times that of the conventional one, and the end of the blower pipe is made about the conventional two. The end of the blower tube on the canvas side may be gradually narrowed.

  For this reason, a compressor (not shown) as a blower that vibrates the canvas 2 is replaced with a compressor having a blowing capacity of about 3 times, and the compressor (not shown) is transferred from the compressor (not shown) to the canvas 2. The blower pipe (not shown) is replaced with a blower pipe having a cross-sectional area of about three times that of the conventional one.

  The cargo hold air slide structure 1 of the cement carrier according to the first embodiment arranged as described above blows air from the large compressor (not shown) to the canvas 2 when carrying out cement as a load. The canvas 2 is vibrated, and the cement as a load is gathered to the flow conveyor 110 arranged near the hull center line through the cut gate 113 and transported out of the ship as in the conventional case.

In the cargo hold air slide structure 1 of a cement carrier according to the first embodiment, the canvas 2 having a large width is stretched over the entire surface of the air slide structure 1 without providing a gap, so that a mountain that has been conventionally required is provided. The type cement puddle prevention 112 is unnecessary, that is, no cement puddle is generated even if the mountain type cement puddle prevention 112 is not arranged, and the cement as a load is efficiently supplied to the flow conveyor 110 via the cut gate 113. As described above, since the air slide structure 1 in which the canvas 2 having a large width is stretched over the entire bottom of each cargo hold 101, 102, 103, 104 as described above, the cement as the load is used. There are no gaps to enter, and cargo will not be mixed.
Furthermore, in the cargo hold air slide structure 1 of the cement carrier according to the first embodiment, by providing the cement distribution mountain 3 at the center of the hull, the cement is guided to each cut gate 113 and the cement stays in one place. This makes it easier to load and discharge cement.

  The present invention is used for a cargo hold structure of a cement carrier.

DESCRIPTION OF SYMBOLS 1 Cargo hold air slide structure of cement carrier 2 Canvas 3 Cement distribution pile 100 Cement carrier 101, 102, 103, 104 Cargo hold 110 Flow conveyer 111 Air slide 112 Mountain type cement accumulation prevention 113 Cut gate 114 Canvas 115 Upper inclined cover 116 Connection Bolt nut portion 117 Canvas support steel plate 118 Ship bottom skin 119 Ballast tank upper part 120 Air piping space 121 Opening part

Claims (1)

A flow conveyor is arranged linearly along the ship center line at the bottom of the cargo hold of the cement carrier,
A plurality of cement discharge cut gates are provided along the flow conveyor,
In the center of the hull between the cut gates, a cement distribution pile with a substantially trapezoidal shape in the center cross section is provided,
A plurality of canvas large shape and laid side by side in the hull longitudinal direction in the wide inclined from ship's side without the midship have a clearance on the whole surface toward the cement dispensing mountains,
When carrying out cement as cargo, the canvas is blown from a blower comprising a large-capacity compressor and a blower pipe having a large diameter and gradually narrowing the end of the canvas, and the canvas is vibrated. A cargo hold air slide structure for a cement carrier, wherein cement as a load is gathered by vibrations to the flow conveyor disposed near the hull center line via the cut gate and conveyed outside the ship.

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