JPH061439A - Branch structure of transport path of air slide type conveyer - Google Patents

Abstract

PURPOSE:To prevent any article under transportation from leaking in the interior of an enclosed main transport path or branch discharge path and to reduce the sizes of a structure for separating the article under transportation from the main transport path, in an air slide type conveyer having a branch structure for separating an article under transportation from the main transport path. CONSTITUTION:An opening gate 9 communicating with a branch discharge path 7 is provided on the bottom wall 3 of a main transport path 2, and an opening gate opening and closing door member 10 capable of taking a position for closing the opening gate 9 and a position of blocking the downstream area of the opening gate 9 of the main transport path 2 and turning around a supporting shaft 11 is disposed in the position of the opening gate 9. The door member 10 includes a top surface where a canvas having air permeability is stretched and an air supply chamber 16 provided under the canvas. Further, there is provided a pressurized air supply means capable of supplying pressurized air to the air supply chamber 16 at least under the condition of closing the opening gate 9 by the door member 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air slide type conveyor for transporting lime, cement or other powdery substances in factories, service stations, tanker ships and the like.

[0002]

2. Description of the Related Art For example, on a tanker ship, lime,
As shown in FIGS. 6 and 7, in order to convey cement or other powdery substances to the loading places provided in various places on the ship,
An air slide type conveyor 27 is used. The conveyor 27 communicates with a hopper 28 into which a material to be conveyed is introduced, extends in the lengthwise direction of the hull, and is branched downward in the widthwise direction of the hull, and a main conveyance path 29 inclined downward. And a plurality of branch discharge paths 30 that are provided. As shown in FIG. 8, the main transport path 29 is formed in a duct shape, and a breathable canvas 31 is stretched on the bottom wall thereof. A compressed air supply chamber 32 is provided below the canvas 31, and a compressed air supply unit (not shown) is connected to the compressed air supply chamber 32, and the compressed air supplied by the compressed air supply unit is supplied. Are jetted out into the main conveyance path 29 through the canvas 31. When the pressurized air is ejected into the main transport path 29, the transported object in the main transport path 29 floats and becomes in a fluidized state, and the transported object moves downward in the main transport path 29 due to its gravity. Flowing. Then, the transported object flows into the branch discharge path 30 and is transported to the loading place by the branch discharge path 30.

As shown in FIG. 9, the main conveyance path 29 and the branch discharge path 30 are located at the branch points of the main conveyance path 29 and the branch discharge path 30.
Shutters 33 and 34 for opening and closing are provided. The shutters 33 and 34 are drive devices (not shown).
It is designed to move up and down. When the branch discharge path 30 is not used, the shutter 34 of the branch discharge path 30 is lowered to close the branch discharge path 30, and the shutter 33 of the main transport path 29 is lifted to open the main transport path 29. When the branch discharge path 30 is used, the shutter 33 of the main transport path 29 is lowered to close the main transport path 29, and the shutter 34 of the branch discharge path 30 is raised to open the branch discharge path 30. .

[0004]

In the structure described above, when the shutters 33 and 34 are lowered,
The transported object is sandwiched between the tips of the shutters 33 and 34 and the canvas 31, and the shutters 33 and 34 are attached to the canvas 3.
1 is not completely contacted, a gap is created between the shutters 33 and 34 and the canvas 31, and the conveyed object leaks into the main transport path 29 or the branch discharge path 30 which is blocked through the clearance. there were. Also, the shutters 33, 3
When 4 is raised, the shutters 33 and 34 project above the main transport path 29 or the branch discharge path 30 and reach a height of about 1.5 m, occupying a large space.

Therefore, according to the present invention, in an air slide type conveyor having a branching structure for branching an object to be conveyed from the main path, the object to be conveyed does not leak inside the main path or branch discharge path in which the object is blocked. Another object is to reduce the size of the structure for branching the transported object from the main transportation path.

[0006]

In order to achieve the above-mentioned object, in the present invention, a breathable canvas is stretched on the bottom wall of the main conveyance path which is formed in a duct shape and is inclined downward. An air slide type conveyor in which pressurized air is ejected from a pressurized air supply chamber provided below the canvas into the main transport path to transport the object to be transported in the main transport path in the downstream direction of the main transport path. At the bottom wall of the main conveyance path, an opening gate communicating with the branch discharge path is provided, and at the position of the opening gate, a position for closing the opening gate and a portion downstream of the opening gate for the main conveyance path are closed. And an opening gate opening / closing door member which is located at the downstream end of the opening gate and is rotatable around a support shaft extending in the width direction of the main conveyance path, and the door member is a ventilation member. Stretch the canvas Pressurized air supply means including a top surface and an air supply chamber below the top surface, and capable of supplying pressurized air to the air supply chamber of the door member when at least the door member is in a state of closing the opening gate. Is provided.

[0007]

In the state in which the door member closes the opening gate, pressurized air is supplied into the air supply chamber of the door member by the pressurized air supply means, and the pressurized air passes through the canvas of the door member and the main transport path. Gush out inside. Therefore, it is possible to convey the object to be conveyed through the main conveyance path. Further, the door member pivots around the support shaft to close the downstream portion of the opening gate of the main conveyance path and open the branch discharge path. Therefore, the object to be conveyed can be conveyed through the branch discharge path.

[0008]

EXAMPLES Examples of the present invention will be described below. The branch structure of the conveying path of the air slide type conveyor of this embodiment is used for an air slide type conveyor for conveying lime, cement or other powdery substances on a tanker ship to loading places provided at various places on the ship. It is a thing. The air slide type conveyor is composed of a main transport path and a plurality of branch discharge paths branching from the main transport path. The main transport path extends from a hopper into which a material to be transported is introduced, is inclined downward, and is branched and discharged. The path extends downward from the main transport path. The branch structure of the transport path of the air slide type conveyor of the present invention is used at the branch points of the main transport path and the branch discharge path and can be handled as a unit. In FIGS. 1 and 3, a branch structure 1 of a transport path of an air slide type conveyor of the present invention is formed in a duct shape,
An inclined main transport path 2, a breathable canvas 4 stretched on a top surface of a bottom wall 3 of the main transport path 2 via a pressing member 5, and a pressure provided below the main transport path 2. Air supply chamber 6
And a branch discharge path 7 that branches downward from the bottom wall 3. In FIG. 3, as shown by a chain line, the main conveyance path 2 is connected to the main conveyance path of the air slide type conveyor, and the pressurized air supply chamber 6 is connected to the pressurized air supply chamber of the air slide type conveyor. It The branch discharge path 7 is connected to the branch discharge path of the air slide type conveyor. The pressurized air supply chamber 6 and the branch discharge passage 7 are partitioned by a partition wall 8. A pressurized air supply unit (not shown) is connected to the pressurized air supply chamber 6, and pressurized air is supplied into the pressurized air supply chamber 6 by the pressurized air supply unit, and the air passes through the canvas 4. Is spouted into the main transport path 2.

The bottom wall 3 is provided with an opening gate 9 communicating with the branch discharge passage 7, and a tapered portion 9a is provided around the opening gate 9. An opening gate opening / closing door member 10 is provided inside the opening gate 9, and the door member 10 is
It is attached to a support shaft 11 that is located at the downstream end of the opening gate 9 and extends in the width direction of the main transport path 2, and is rotated around the support shaft 11 to close and close the opening gate 9 and the main transport path 2. It can be used as a position to block the downstream portion of the opening gate. A breathable canvas 12 is stretched on the top surface of the door member 10. Canvas 12
As shown in FIGS. 4 and 5, a support rod 13 extending in the length direction of the door member 10 and a support rod 14 extending in the width direction of the door member 10.
It is supported by and is fixed to the door member 10 by the pressing member 15. Door member 10 is opening gate 9
When the box is closed, the top surface of canvas 12 is canvas 4
It is designed to be in the same plane as the top surface of. And
The door member 10 includes an air supply chamber 16 formed below the canvas 12 and over the entire surface of the door member 10.
When the door member 10 closes the opening gate 9,
As shown in FIG. 5, the peripheral edge of the bottom surface of the door member 10 abuts on the tapered portion 9a around the opening gate 9, and the opening member 9 is closed by the door member 10 without any gap. . Further, as shown in FIG. 3, seal spring steel plates 25, 26 extending over the entire length of the support shaft 11 are provided between the support shaft 11, the bottom wall 3, and the partition wall 8. One ends of the seal spring steel plates 25 and 26 are fixed to the bottom wall 3 and the partition wall 8,
The other end is in contact with the outer peripheral surface of the rotating support shaft 11 to prevent the conveyed object from leaking from the main conveying path 2 into the branch discharge path 7.

As shown in FIG. 3, the support shaft 11 has a hollow portion 17 extending in the lengthwise direction, and both ends of the hollow portion 17 are sealed. In addition, as shown in FIG. 5, the support shaft 11 is provided with a plurality of air holes 18 which are provided at intervals in the length direction of the support shaft 11 and which communicate the cavity 17 and the air supply chamber 16 of the door member 10. Have. Then, as shown in FIG.
An air pipe 19 that connects the hollow portion 17 of the support shaft 11 and the pressurized air supply chamber 6 downstream of the opening gate 9 is provided at one end of the support shaft 11, and the air pipe 19 adds a downstream portion of the opening gate 9. The pressurized air in the compressed air supply chamber 6 is supplied into the air supply chamber 16 of the door member 10. Also, support shaft 1
An arm 20 is fixed to the other end of the arm 1.
Drive means 21 for rotating the support shaft 11 is attached to the. A pneumatic cylinder is used as the drive means 21. As shown in FIG. 3, angles 22a and 2a are provided on the side surface and the top surface of the main transport path 2 downstream of the opening gate 9.
2b is attached to the door member 1 as shown by the broken line.
When 0 is in a position to close the main transport path 2, the angle 2
2a, 22b and the top surface of the door member 10 are parallel to each other, the angles 22a, 22b abut on the peripheral edge of the top surface of the door member 10, so that the main transport path 2 is closed by the door member 10 without a gap. Has become.

Further, as shown in FIG. 2, when the door member 10 moves to a position for closing the opening gate 9, the arm 2 is moved.
A first sensor 23 that comes into contact with 0 to generate a signal, and a second sensor 24 that comes into contact with the arm 20 and produces a signal when the door member 10 moves to a position that closes the main transport path 2 are provided. , The first sensor 23, the second sensor 24, and the pressurized air supply means are connected to a control means (not shown), and the control means receives signals from the first sensor 23 and the second sensor 24, and the door member 10 Is in a position to close the opening gate 9, the pressurized air supply means is operated to supply the pressurized air into the pressurized air supply chamber 6 downstream of the opening gate 9, and the door member 1
When 0 is at the position for closing the main transport path 2, the pressurized air supply means is stopped and the supply of pressurized air into the pressurized air supply chamber 6 downstream of the opening gate 9 is stopped. In this embodiment, limit switches are used as the first sensor 23 and the second sensor 24.

In the apparatus having the above-mentioned structure, when the opening gate 9 is closed by the door member 10, the control means actuates the pressurized air supply means in response to the signal from the first sensor 23, and the pressurized air is supplied. The supply means supplies the compressed air into the compressed air supply chamber 6 downstream of the opening gate 9, and the supplied compressed air passes through the air pipe 19 and the hollow portion 17 of the support shaft 11.
Into the inside of the air supply chamber 16 of the door member 10 through the air hole 18, and through the canvas 12 into the main conveyance path 2
Gush out inside. When the object to be conveyed is conveyed into the main conveying path 2 by the conveyor on the upstream side, the pressurized air jetted from the canvas 12 causes the particles of the object to be conveyed in the main conveying path 2 to float, and the object to be conveyed flows. Then, the gravity moves to the downstream side of the main transport path 2 (the direction of the arrow in FIG. 3).
Then, the transported object flows into the downstream conveyor and is transported. When an instruction is input to the control means so that the object to be conveyed is conveyed through the branch discharge path 7, the drive means 21 is driven, the rod of the drive means 21 retracts, and the arm 20 moves around the support shaft 11. It rotates in the clockwise direction in FIG.
When the arm 20 rotates, the door member 10 rotates around the support shaft 11 in the clockwise direction, and the opening gate 9 is opened. Further, the peripheral edge portion of the top surface of the door member 10 has an angle 22.
The rod of the drive means 21 reaches the end point at a position where the tooth tips of a and 22b are appropriately pressed, and the rotation of the arm 20 and the door member 10 is stopped by stopping the rod. At this time, the door member 10 is stopped at a position that closes the main transport path 2. The broken line in FIG. 3 shows that state. Arm 20 is second
Upon contact with the sensor 24, the second sensor 24 emits a signal, and the signal causes the control device to stop the pressurized air supply means, so that the pressurized air is supplied into the pressurized air supply chamber 6 downstream of the opening gate 9. Supply is stopped. When the conveyed object is supplied into the main conveying path 2 by the upstream conveyor, the conveyed object drops into the opening gate 9 and flows into the branch discharge path of the conveyor through the branch discharge path 7. Since the peripheral edge portion of the top surface of the door member 10 is in contact with the angles 22a and 22b, the main transport path 2 is reliably blocked and the transported object does not leak into the main transport path 2.

Next, when an instruction is input to the control means so that the object to be conveyed is conveyed through the main conveying path 2, the driving means 21 is driven, the rod of the driving means 21 advances, and the arm 20 moves. The support shaft 11 is rotated in the counterclockwise direction in FIG. When the arm 20 rotates, the door member 10 rotates around the support shaft 11 in a counterclockwise direction, and the main transport path 2
When the door member 10 is opened, the peripheral edge of the bottom surface of the door member 10 has a tapered shape around the opening gate 9.
When a is pressed appropriately, the rod of the drive means 21 reaches the apex at this position, and the rotation of the arm 20 and the door member 10 is stopped by stopping the rod. At this time, the door member 10
Is located inside the opening gate 9 and closes the opening gate 9. Further, the control means operates the pressurized air supply means in response to the signal from the first sensor 23, and the pressurized air supply means supplies the pressurized air into the pressurized air supply chamber 6 downstream of the opening gate 9 to apply the pressurized air. The compressed air flows into the cavity 17 of the support shaft 11 through the air pipe 19, flows into the air supply chamber 16 of the door member 10 through the air hole 18, and then passes through the canvas 12 to the inside of the main conveyance path 2. Gushes into. Therefore, the transported object is transported via the main transport path 2. Since the peripheral edge of the bottom surface of the door member 10 is in contact with the tapered portion 9a around the opening gate 9, the opening gate 9 is reliably sealed and the transported object is in the branch discharge path 7. Can't leak to.

[0014]

As described above, according to the present invention, the door member provided in the opening gate provided in the bottom wall of the main transport path rotates about the support shaft, and the door member allows the door member to rotate. The main transport path or branch discharge path is blocked. Therefore, as in the conventional structure, the transported object is sandwiched between the shutter and the canvas, a gap is created between the shutter and the canvas, and the transported object leaks into the main transport path or the branch discharge path where it is blocked. Therefore, the main transport path or the branch discharge path can be reliably blocked. Moreover, since the door member is configured to rotate in the main transport path, the device for branching the transported object from the main transport path is small and does not occupy a large space. Therefore, the intended purpose can be achieved.

[Brief description of drawings]

FIG. 1 is a front view of a branch structure of a conveyance path of an air slide type conveyor of the present invention.

FIG. 2 is a left side view of FIG.

FIG. 3 is a sectional view taken along the line A-A ′ in FIG.

FIG. 4 is a plan view of the door member 10.

5 is a sectional view taken along line B-B ′ of FIG.

FIG. 6 is a plan view of a ship equipped with an air slide type conveyor 27.

FIG. 7 is a side view of FIG.

FIG. 8 is a cross-sectional view of the air slide type conveyor 27.

FIG. 9 is a plan view schematically showing a branch structure of a transport path of a conventional air slide type conveyor.

[Explanation of symbols]

 1 Branching structure of air slide type conveyor transport path 2 Main transport path 3 Bottom wall 4, 12 Canvas 6 Pressurized air supply chamber 7 Branch discharge path 9 Opening gate 10 Door member 11 Spindle 16 Air supply chamber

[Procedure amendment]

[Submission date] August 17, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] Figure 9

[Correction method] Change

[Correction content]

[Figure 9]

Claims (9)

[Claims] 1. A duct having a permeable canvas stretched on a bottom wall of a main conveyance path inclined downward, and pressurized air is supplied from a pressurized air supply chamber provided below the canvas. In an air slide type conveyor that is ejected into the main conveyance path to convey the object to be conveyed in the main conveyance path in the downstream direction of the main conveyance path, an opening communicating with the branch discharge path on the bottom wall of the main conveyance path A gate is provided, and a position for closing the opening gate and a position for closing the downstream portion of the opening gate of the main transport path can be provided at the position of the opening gate, and the gate is located at the downstream end of the opening gate. An opening gate opening / closing door member rotatable around a support shaft extending in the width direction of the main transport path, the door member having a top surface on which a breathable canvas is stretched,
An air supply chamber is provided below the air supply chamber, and there is provided pressurized air supply means capable of supplying pressurized air to the air supply chamber of the door member at least when the door member closes the opening gate. A branch structure of the air slide type conveyor path. 2. The top surface of the canvas of the door member and the top surface of the canvas of the main transport path are in the same plane when the door member is in a position to close the opening gate. The branch structure of the conveying path of the air slide type conveyor according to claim 1. 3. A hollow portion communicating with an air supply chamber of the door member is provided inside the support shaft, and the pressurized air supply means is connected to the hollow portion. The branch structure of the transport path of the air slide type conveyor described in. 4. A hollow portion communicating with the air supply chamber of the door member is provided inside the support shaft, and the hollow portion communicates with a pressurized air supply chamber downstream of the opening gate via an air pipe. The branched structure of the conveying path of the air slide type conveyor according to claim 1, wherein the pressurized air supply means is connected to a pressurized air supply chamber downstream of the opening gate. 5. The branch structure of a conveying path of an air slide conveyor according to claim 1, further comprising drive means for rotating the door member around the support shaft. 6. A first sensor that detects when the door member is in a position to close the opening gate and sends a signal, and a position where the door member closes a part of the main transport path downstream of the opening gate. The second which detects that there is and sends a signal
A sensor and a control device that is connected to the first sensor, the second sensor, and the pressurized air supply means, receives a signal from the first sensor and the second sensor, and controls the pressurized air supply means. The branch structure of the conveying path of the air slide type conveyor according to claim 1, wherein the branch structure is provided. 7. The branch structure of a transport path of an air slide type conveyor according to claim 6, wherein the first sensor and the second sensor are limit switches. 8. The taper is formed around the opening gate so that the peripheral edge of the bottom surface of the door member abuts the periphery of the opening gate when the door member is in a position to close the opening gate. The branched structure of the transport path of the air slide type conveyor according to claim 1, wherein the branched portion is provided. 9. An angle that extends parallel to the top surface of the door member and abuts a peripheral portion of the top surface of the door member when the door member is in a position to close a downstream portion of the opening gate of the main transport path. The branch structure of the transport path of the air slide type conveyor according to claim 1, characterized in that the above are provided on a side surface and a top surface in the main transport path.