JP5109461B2 - Floating belt conveyor - Google Patents

Description

  The present invention relates to a levitation belt conveyor device that travels in a state in which a belt is levitated by jetting gas from a jet outlet disposed at a lower portion of a belt support trough, and more particularly to a levitation belt conveyor device in which a position where a raw material is charged changes. .

Conventional belt conveyors that run on rollers have many problems such as the belt transport speed is limited due to restrictions such as the rotational resistance of the rollers, and the belt life is short due to wear caused by sliding between the rollers and the belt. ing.
For this reason, in recent years, a floating type belt conveyor apparatus that supplies gas from the lower surface of the belt and floats the belt has been widely used.

JP 11-59838 A

  The levitation type belt conveyor device shown in Patent Document 1 has a circularly curved belt support trough arranged with a belt curved in an arc shape, and jets compressed air from a jet outlet formed below the belt to the lower surface of the belt. By spraying, the belt is caused to run in a slightly lifted state.

Here, an example of a conventional floating belt conveyor device is shown in FIG.
The conventional levitation belt conveyor apparatus shown in FIG. 5 includes a belt 101 disposed in a cylindrical tube-shaped belt support trough that is paired up and down with a carrier side belt support trough 111 and a return side belt support trough 112. This is a floating belt conveyor device of a type in which a belt floats and travels by jetting air from a jet port (not shown) disposed under two belt support troughs 111 and 112.

  Here, the conventional levitation belt conveyor has a structure in which air is blown into the trough to float the belt, and the air blown out inside the trough encloses dust such as raw materials inside the trough and the dust-containing gas. There is a possibility. Therefore, if the jetted air leaks out of the machine as it is, there is a high possibility of causing environmental pollution.

  Therefore, the conventional levitation belt conveyor normally has a sealed structure so that the ejected air does not leak out of the atmosphere as it is, and the ejected air is extracted from the exhaust pipe and collected, etc. After removing dust and the like through the air, it is released into the atmosphere.

By the way, there is a type of belt conveyor in which the input position of the raw material on the belt conveyor changes.
As such a belt conveyor, for example, an apparatus of a type that changes the position of discharging the raw material from the belt conveyor by moving the entire belt conveyor back and forth is well known. This type of belt conveyor moves the entire belt conveyor back and forth to change the position of the belt conveyor to move back and forth, changing the position of discharging the raw material, but feeding the raw material onto the belt conveyor When the position of the chute does not change, the position of the belt conveyor and the position of the input chute change relatively. As a result, the position of the raw material on the belt conveyor moves back and forth in the longitudinal direction of the belt and changes.

For example, a ship loader is known as a transporter for loading bulk goods such as coal, limestone, and talc on a cargo ship. The ship loader inputs the raw material supplied by the transport pipe onto the belt conveyor. And transported to the cargo ship hold.
Normally, when bulk goods are loaded into the cargo ship hold, it is necessary to adjust the position where the material is loaded with the ship loader in the hold, that is, the position where the load is loaded. Must be moved back and forth and back and forth. In other words, the ship loader moves the belt conveyor built in the ship loader back and forth, thereby moving the material discharge position back and forth. At that time, the position of the transport pipe that supplies the material to the belt conveyor is moved back and forth. Therefore, the raw material input position on the belt conveyor changes.

  Of course, there are other belt conveyors in which the raw material charging position changes, not limited to those described above, and there are belt conveyors in which the raw material charging position changes for various reasons.

  Here, as described above, the belt conveyor in which the raw material charging position changes usually corresponds to the change in the raw material charging position, so that a large raw material charging opening extending in the longitudinal direction of the belt is formed in the upper part of the trough. Thus, the raw material charging chute is moved back and forth within a large opening extending in the longitudinal direction of the belt, so that the structure corresponding to the change in the raw material charging position is achieved.

However, in the levitation belt conveyor that blows air into the trough and floats the belt, the above-mentioned large material input opening extending in the longitudinal direction of the belt is formed in order to cope with the change in the raw material input position. Then, a large amount of dust-containing air or the like leaks out of the machine from the large opening, which causes a problem. Therefore, the floating belt conveyor apparatus corresponding to the change in the raw material charging position needs to cover the entire apparatus as shown in FIG.
However, covering the entire floating belt conveyor device has the problem that it leads to an increase in the size of the device and is not efficient, and in many cases, dust scattered in the cover accumulates in the device for a long time. . Therefore, the floating belt is made more efficient by narrowing the opening as much as possible and reducing the volume of the space to be sealed so that the floating air blown into the trough does not leak out of the machine. A conveyor device was sought.

In order to solve the above problems, the floating belt conveyor apparatus according to the present invention is:
(1) Levitation by transporting the raw material thrown in from the charging chute with the belt running by running the belt placed on the belt supporting trough by raising gas from the jet formed in the belt bearing trough. In the belt conveyor apparatus, the charging chute is a movable charging chute that moves a predetermined distance back and forth in the longitudinal direction of the belt, and the belt support trough has an opening extending in the longitudinal direction of the belt at an upper portion thereof, a lid for opening and closing the opening, the lid is shall such a plurality of child lid provided continuously in the longitudinal direction of the belt, the bottom of the chute, the rectangular plate extending in the longitudinal direction of the belt At the same time, the both ends of the belt in the width direction of the plate are brought into contact with the inside of the belt support trough through packing, thereby opening the opening portion of the belt support trough. A cover opening / closing guide is moved along with the charging chute by attaching a lid opening / closing guide on the inner lid on both sides of the charging chute in the longitudinal direction of the belt . especially Therefore opening and closing by guiding the child lid,
When the charging chute is moved, the child lid in the moving direction is opened, the child lid after the charging chute is moved is closed, and the inner lid covers the portion where the child lid is open by the inner lid. And the outside of the apparatus are cut off to prevent the gas from leaking from the opening of the belt support trough.

According to the present invention, even if a movable charging chute that can respond to changes in the raw material charging position is used in a floating belt conveyor device that jets air into the trough to float the belt, the charging chute By opening and closing guides that move together and open and close the child lid, the raw material charging opening provided in the belt support trough may be formed by opening the child lid only at the minimum necessary portion. Therefore, the area of the opening can be made as small as possible.
In addition, the opening formed by opening the child lid also shuts off the inside of the belt support trough and the outside of the device by the inner lid, so that the gas can be prevented from leaking from the opening of the belt support trough, As a result, it is possible to prevent the problem of the prior art that a large amount of dust-containing air leaks from the opening.

Hereinafter, a preferred example of an embodiment of the present invention will be described in detail with reference to the drawings.
1 to 4 relate to an embodiment of the present invention, FIG. 1 is a cross-sectional view of a main part for explaining the structure of a belt support trough and a child lid, (1) shows a state in which the child lid is closed, 2) shows a state in which the child lid is opened. FIG. 2 is a schematic diagram for explaining the overall structure of the floating belt conveyor device, and FIG. 3 is a schematic diagram for explaining the relationship between the lid of the floating belt conveyor and the charging chute. FIG. 4 is a conceptual diagram illustrating the configuration of the inner lid attached to the raw material charging chute.

The structure of the floating belt conveyor apparatus 100 according to the embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 2, the levitation belt conveyor device 100 according to the present embodiment may be called a loop-shaped (sometimes referred to as endless) belt 1, a carrier-side belt support trough 11 (also referred to as a carrier-side trough 11). ), Return side belt support trough 12 (sometimes referred to as return side trough 12), supply side chute cover 60, end cover 61, discharge side chute cover 62, head pulley HP, tail pulley TP, etc. The trough forming apparatus etc. which are comprised and are not shown in figure are provided.

The endless belt 1 is configured to be looped between the head pulley HP and the tail pulley TP so as to move endlessly, and by rotating the head pulley HP by a driving source (not shown), Circulate between the pulley HP and the tail pulley TP. Further, when the belt 1 circulates between the head pulley HP and the tail pulley TP, the belt 1 is arranged to travel in the carrier side trough 11 and the return side trough 12 (also referred to as belt support troughs 11 and 12). Has been.
If the belt reversing device 50 is provided before and after the return side trough, it is possible to prevent an increase in belt running resistance due to bending of the belt.

A chute cover 60 is provided on the tail pulley TP side of the floating belt conveyor apparatus 100, and the chute cover 60 is connected to the raw material transport pipe 55 via a connection pipe 57 so that the raw material sent from the raw material transport pipe 55 is placed on the belt. A throwing chute 10 to be thrown is disposed, and an end cover 61 is provided on the head pulley HP side. A discharge port for the conveyed product H and a chute 62 on the discharge port side are disposed below the end cover 61 on the head pulley HP side.
The carrier-side trough 11 and the return-side trough 12 according to the present embodiment are formed of metallic pipe steel pipes, and the carrier-side trough 11 is formed so that the cross section is cut into a semicircular shape. In addition, a side plate extending along the longitudinal direction of the belt support trough is disposed between the carrier side trough 11 and the return side trough 12.
In the present embodiment, an air duct GH for supplying air to a gas outlet (not shown) formed in the carrier-side trough 11 is formed, and air is supplied to a gas outlet (not shown) formed in the return-side trough 12. An air duct GL for supplying the air is formed.

  Moreover, in this embodiment, the structure which can distribute and supply to the air supply pipe | tube 20 of the carrier side trough 11 and the air supply pipe | tube 30 of the return side trough 12 as the gas compressed air sent from the air blower which is not shown in figure. In addition, a flow rate control valve for controlling the flow rate of the compressed air flowing in the pipe is installed in the middle of the pipe (not shown), and the amount of compressed air supplied to the carrier side trough 11 and the return side trough 12 is set respectively. It can be controlled and adjusted.

  The compressed air supplied from the air supply pipe 20 via the air duct GH is jetted into a carrier side trough 11 from a jet outlet (not shown) drilled in the lowermost part of the carrier side trough 11. The compressed air that has entered the carrier-side trough 11 is jetted and supplied to the lower surface of the belt 1 as a gas, and the carrier-side belt 1 is lifted. Then, the compressed air after the levitation action is discharged from the exhaust pipe 24, passes through a dust collector (not shown), collects dust scattered from the conveyed object, and then releases it to the outside (in the atmosphere in the present embodiment). It becomes the composition which is done.

  Similarly, an air duct GL extending along the longitudinal direction of the belt support trough is provided below the return side trough 12, and an unillustrated jet port drilled at the lowermost part of the air duct GL and the return side trough 12. The compressed air is jetted and supplied into the return-side trough 12 via the. The compressed air that has entered the return-side trough 12 is introduced into the lower surface of the belt 1 as a gas and ejected to float the return-side belt 1.

Here, in the embodiment shown in FIG. 1, the pipe of the carrier side trough 11 has an opening that is cut upward at the top and opens upward, and is adjacent to the opening. A lid 13 for opening and closing the part is arranged so as to extend in the longitudinal direction of the belt. Here, the lid 13 includes a plurality of child lids arranged from the tail pulley TP side toward the head pulley HP side.
In the embodiment shown in FIGS. 2 and 3, the lid 13 has a plurality of child lids (child lids 13A, child lids 13B, child lids 13C, child lids 13D, child lids) arranged so as to extend in the belt longitudinal direction. A total of eight lids 13E, child lids 13F, child lids 13G, and child lids 13H).

The eight child lids described above have substantially the same structure. Therefore, the structure of the eight child lids from the child lid 13A to the child lid 13H will be described by taking the structure of the child lid 13B as an example. As shown in FIG. 1 (2), the child lid 13B is a rectangular flat plate-like structure having one end bent into an L shape, and one end bent into an L shape is the upper end of the carrier side trough. It is pivotally supported by a lid support base 4 disposed in the vicinity of the unit and is supported rotatably. The other end of the child lid 13B is formed in the time of closing the opening closes the child lid 13B, the seal portion in contact with the lid cradle 15 which the end of the child lid 13B is attached to the cab rear trough Then, the air inside the carrier side trough 11 is prevented from coming out of the machine from the corresponding contact portion. FIG. 1A shows a case where the end portion of the child lid 13 (13E as an example in the figure) abuts against the lid cradle 15 to form a seal portion.

1 (1) is a schematic cross-sectional view taken along the line BB of the floating belt conveyor apparatus shown in FIG. 2, and FIG. 1 (2) is a schematic view showing the AA cross section of the floating belt conveyor apparatus shown in FIG. (1) shows a state in which the child lid 13E is closed, and (2) shows a state in which the child lid 13B is opened.
That is, when the closing chute 10 is located at the position of the child lid 13B and the child lid 13C of the carrier side trough 11, the two pieces of the child lid 13B and the child lid 13C are open, and two child lids (child The lid 13A and the child lid 13D) are in a half-open state. The other four child lids (the child lid 13E, the child lid 13F, the child lid 13G, and the child lid 13H) are in a closed state.

Further, in this embodiment, in order to reduce the amount of air that escapes from the inside of the carrier-side trough 11, the side portions (belt longitudinal end portions) of adjacent child lids are slightly opened when the child lids are closed. The seal portion was formed so that air would not leak out at the overlap portion.
In this case, it is preferable to dispose a seal member such as a rubber packing in the overlapping portion because the sealing performance is further improved.

Here, in the present embodiment, a rectangular plate extending in the belt longitudinal direction is arranged at the lower portion of the charging chute 10 to form the inner lid 18. As shown in FIG. 4, lid opening / closing guides 17 </ b> A and 17 </ b> B are attached on the inner lid 18 on the front and rear sides of the closing chute 10 in the belt longitudinal direction.
Since the lid opening / closing guides 17A and 17B are mounted on the inner lid 18 so as to be adjacent to the charging chute 10, the lid opening / closing guides 17A and 17B move in the same manner as the charging chute 10 according to the movement of the charging chute 10. The child lid in the direction in which the loading chute 10 moves is opened before the loading chute 10 moves, and after the movement of the loading chute 10, the child lid at the position where the loading chute 10 has disappeared is closed.

In other words, the lid opening / closing guides 17B and 17A move together with the closing chute 10, thereby opening the child lids at the destination of the charging chute 10 in sequence and at the place where the charging chute 10 has stopped moving. Close the child lid.

  Further, here, packing P as shown in FIG. 4 is arranged at both ends of the inner lid 18 on the belt width direction side, and the packing P is attached to the child lid as shown in FIG. The carrier-side trough 11 is in contact with the carrier-side trough 11 inside the portion of the carrier-side trough 11 that is open because it is opened or half-opened, and is arranged between the belt portion 1 side in the carrier-side trough 11 and the outside of the machine. It becomes a shielding plate and forms a seal.

  Accordingly, the inner lid 18 needs to have an area sufficient to cover the opened child lid and the half-opened child lid. In the embodiment shown in FIG. 3, the child lid 13A, the child lid 13B, the child lid 13C, In order to seal the portion where the child lid 14D is opened, it is formed in a rectangular shape that can cover the lower portion of the child lid 13D from the lower portion of the child lid 13A.

  Here, in this embodiment, as shown in FIGS. 2 and 3, the position of the raw material transport pipe 55 that supplies the raw material to the floating belt conveyor device moves back and forth in the longitudinal direction of the belt on the carrier side trough 11. Therefore, the position of the charging chute 10 connected to the raw material transport pipe 55 via the connection pipe 57 changes on the belt.

In the present embodiment, first, as shown in FIG. 1, the child lids 13 </ b> A to 13 </ b> D are opened to form an opening, and the charging chute 10 is inserted through the opening.
As described above, as the charging chute 10 moves toward the head pulley in accordance with the change in the position of the raw material transport pipe 55, the lid opening / closing guide 17B moves to the child lid 14E and child lid 13F at the destination. The child lid 13G and the child lid 14H are sequentially opened, and at the same time, the lid opening / closing guide 17A has a child lid 13A, a child lid 13B, a child lid 13C, and a child lid 13D where the throwing chute 10 has stopped moving. The child lid 14E is sequentially closed.

Similarly, when the charging chute 10 is in the position of the child lid 13G and the child lid 13F, first, the child lids 13H to 13E are opened to form an opening. As 10 moves to the tail pulley side, the lid opening / closing guide 17A sequentially opens with the child lid 13D, child lid 13C, child lid 13B, and child lid 13A at the destination, and the lid opening / closing guide 17B The child lid 13H, the child lid 13G, and the child lid 13F where the charging chute 10 has stopped moving are sequentially closed.
On the carrier-side trough 11, the portion other than the charging chute is the portion on which the child lid is open, and the inner lid 18 shields and seals the inside of the carrier-side trough 11 from the outside of the machine. There is an effect of preventing the air blown into the trough 11 from directly leaking out of the machine. Also, packing (not shown) or the like is disposed on both ends of the inner lid 18 in the belt longitudinal direction, and a seal is formed by the child lid and the packing, thereby reducing the amount of gas that escapes from both ends of the inner lid 18 in the belt longitudinal direction. Is a preferred form.

As described above, in the floating belt conveyor apparatus 100 according to the present embodiment, the charging chute 10 is disposed on the lid 13 including a plurality of child lids that close the opening formed on the carrier-side trough 11. It is possible to open only the minimum lid necessary for the operation and to close the other lids.
Therefore, even if the position of the charging chute 10 moves and the position where the raw material is charged changes back and forth in the longitudinal direction of the belt, only a minimum opening is opened correspondingly. The area of the opening to be taken out can be minimized.
Further, according to the present embodiment, the opening formed by opening the child lid also shuts off the inside of the belt support trough and the outside of the apparatus by the inner lid, so that the gas flows from the opening of the belt support trough. Leakage can be prevented. As a result, it is possible to prevent the problems of the prior art that a large amount of gas such as air containing dust leaks from the opening without covering the entire apparatus. Therefore, when a dust collector is installed in the ship loader, the capacity of the dust collector can be reduced, or it is not necessary to install a dust collector.

It is principal part sectional drawing explaining the structure of the belt support trough and the child lid of the floating type belt conveyor apparatus which concerns on this embodiment. It is a schematic diagram explaining the whole structure of a floating type belt conveyor device concerning this embodiment. It is a schematic diagram explaining the relationship between the lid | cover and throwing chute of the floating type belt conveyor apparatus which concerns on this embodiment. It is a schematic diagram explaining the inner cover of the floating type belt conveyor apparatus which concerns on this embodiment. It is a figure for demonstrating the structure of the conventional floating type belt conveyor apparatus.

Explanation of symbols

1 Belt 10 Loading Chute 11 Carrier Side Belt Support Trough 12 Return Side Belt Support Trough 13 Lid 13A Child Lid 13B Child Lid 13C Child Lid 13D Child Lid 13E Child Lid 13F Child Lid 13G Child Lid 13H Child Lid 14 Lid Support Base 15 Lid Table 17A Lid opening / closing guide 17B Lid opening / closing guide 18 Inner lid 20 Air supply pipe 30 Air supply pipe 55 Raw material transport pipe 57 Connection pipe 60 Supply port side chute 62 Discharge port side chute 75 Blower 100 Floating type belt conveyor device GH Air duct GL Air duct P Packing

Claims (1)

A floating belt conveyor that moves the belt placed on the belt support trough in a levitated state by ejecting gas from an outlet formed in the belt support trough, and conveys the raw material charged from the input chute by the belt that travels. In the device
The charging chute is a movable charging chute that moves a predetermined distance back and forth in the longitudinal direction of the belt,
The belt bearing trough, the opening extending in the upper longitudinal direction of the belt, and a lid for opening and closing the opening, the lid is in shall such a plurality of child lid provided continuously in the longitudinal direction of the belt ,
A rectangular plate extending in the belt longitudinal direction is attached to the lower portion of the charging chute , and both ends of the plate in the belt width direction are brought into contact with the inside of the belt support trough through packing, thereby As an inner lid that shields the opening of the
On the inner lid, by attaching a lid opening / closing guide back and forth across the charging chute in the longitudinal direction of the belt,
The lid opening and closing guide is moved together with the chute, in particular thus opened and closed by guiding the child lid,
When moving the charging chute, open the child lid in the moving direction, close the child lid after the charging chute has moved,
The portion where the child lid is open is characterized in that the inner lid shuts off the inside of the belt support trough and the outside of the device to prevent the gas from leaking from the opening of the belt support trough. A floating belt conveyor device.

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