JP3363069B2 - Floating conveyor dust removal equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a falling powder removing device for an air floating type conveyor. After discharging the transported material on the air floating conveyor, the dirty belt surface scrapes off the adhered material with the belt cleaner, but the adhered material not removed by the belt cleaner directly faces the return trough, and the adhered material is removed. It may accumulate on the trough and block the air blowout holes for floating the belt. The present invention relates to an apparatus for removing such falling powder.

[0002]

2. Description of the Related Art In a conventional air levitation type conveyor, the belt conveying surface after discharging the transported material is scraped off the powder of the transported material attached to the belt surface with a cleaner or the like. However, a cleaner or the like cannot completely remove the powder of the transported material adhering to the belt surface, and the powder adhering to the belt surface comes into contact with the trough on the return side and falls into the trough due to the slight vibration of the belt. In addition, the falling powder increases with the lapse of the transportation time, and there is a concern that the air blowout holes may be blocked. If blockage occurs, there is a problem that a uniform air film cannot be formed between the belt and the trough, the belt comes into contact with the trough, power is increased, and the belt is worn.

It is an object of the present invention to provide a removing device which is suitable for an air floating type conveyor and can effectively remove fallen powder.

[0004]

According to a first aspect of the present invention, there is provided a falling air removing device for an air floating type conveyor, wherein a plurality of cylindrical shells are connected to each other.
Connect the intermediate parts of the conveyor and attach the head puller to both ends.
The rear pulley and tail pulley are arranged,
Key the endless belt around the tail pulley.
In order to circulate between the carrier side and the return side,
I am running in the interspace, in the tubular shell,
A trough for carrier that supports the belt on the carrier side is arranged in the upper stage, and a trough for return that supports the belt on the return side is arranged in the lower stage, and a large number of air blowout holes are formed at intervals in the longitudinal direction at the center of the bottom of each trough. In the air floating type conveyor, the belt is returned from the carrier side.
In the first cylindrical shell that has moved to the side of the belt , an opening is formed, and the width of the opening is such that the belt meanders even if it meanders.
It is characterized in that the end has a size that does not touch the opening, a chute is provided below the opening, and a gate valve is attached to the chute. The falling powder removing device for an air floating conveyor according to claim 2, wherein a level sensor for detecting the amount of accumulated falling powder is attached to the chute, and when the amount of accumulated falling powder reaches a predetermined amount, the level sensor commands the level sensor. It is characterized in that the gate valve is configured to be opened.

According to the first aspect of the invention, the belt which carries the object to be conveyed, reverses by the drive pulley and returns, travels with its surface facing the surface of the return side trough. The powder of the material to be conveyed adhered to is scraped off by the opening formed in the return side trough, falls, and is accumulated in the chute. Therefore, it is possible to prevent the air blowout holes formed in the trough from being clogged by the fallen powder collected in the chute.
Also, the opening provided in the first cylindrical shell on the return side
Since the falling powder is removed from the
It doesn't accumulate much. According to the invention of claim 2, when the amount of powder fallen in the chute reaches a predetermined amount, the signal from the level sensor opens the gate valve to discharge the powder drop at once, and the gate valve is normally closed. It is possible to prevent the air for floating the belt from escaping to the outside.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a main part of a circular cylindrical shell of an air levitation conveyor provided with a powder removal device according to an embodiment of the present invention, and FIG. 2 is a view taken along the line II-II in FIG. FIG. 3 is a side view around the removing device, FIG. 3 is a side view of a circular cylindrical shell provided with a falling powder removing device, and FIG. 4 is an overall side view of the air levitation conveyor of the present embodiment.

First, the overall structure of the air levitation type conveyor of this embodiment will be described with reference to FIG. Reference numeral 1 denotes a circular tubular shell of a conveyor, and a plurality of tubular shells 1 are connected to form an intermediate portion. Although three tubular shells are shown in the drawing, the number of tubular shells may be two or less or four or more. 2 is a head pulley and 3 is a tail pulley, around which an endless belt 4 is wound. 5 is a fan for floating the belt, and 6 is an air pipe. In this conveyor, when the head pulley 2 is driven and the belt 4 is circulated and the air is supplied to the lower surface of the belt by the air pipe 6, the belt 4 is on the air film formed between the trough (not shown). The article on the belt can be conveyed by traveling in a state of extremely low resistance.

The details of the circular tubular shell 1 will be further described with reference to FIGS. The tubular shell 1 is composed of an upper shell 1a and a lower shell 1b, which are cut along the axial direction and are bisected in the diametrical direction. Both side edges of the upper shell 1a and the lower shell 1b are detachably attached to each other by connecting with bolts. Inside the lower shell 1b, a carrier trough 11 that supports the carrier-side belt and a return trough 12 that supports the return-side belt are mounted vertically in two stages.

Each of the troughs 11 and 12 is a trough-shaped member, and a plurality of air blowout holes 14 are formed in the center of the lower surface of each of the troughs 11 and 12 in the longitudinal direction. An air duct 15 for supplying air is attached. The air supplied from the air duct 15 is jetted upward from the air outlet hole 14 and the trough 1
The belt 4 running on the upper surfaces of the belts 1 and 12 forms an air film by forming an air film to reduce the running resistance of the belt 4.

Next, details of the falling powder removing apparatus A will be described with reference to FIGS.
It will be explained based on. Reference numeral 20 denotes an opening, which has a predetermined width narrower than the width of the belt 4 and is formed in a rectangular shape. The predetermined width is a width such that the belt end does not cover the opening 20 even when the belt 4 meanders. Alternatively, it may be the maximum width of the powder adhering to the surface of the belt 4. This opening 20
A funnel-shaped chute 21 is attached below the. The chute 21 includes an upper chute 22 and a lower chute 23, and the lower end of the upper chute 22 is inserted into the upper end of the lower chute 23. Lower chute 23
A discharge pipe 24 is connected to the lower end of the gate valve 2 at the connection between the lower chute 23 and the discharge pipe 24.
5 is attached. Reference numeral 26 is a drive cylinder for the gate valve 25. On the other hand, a level sensor 27 is attached to the lower chute 23 at an intermediate position in the vertical direction.
The level sensor 27 is a sensor that detects that the amount of falling powder accumulated in the lower chute 23 has reached a predetermined amount, and is composed of, for example, an optical sensor including a light receiver and a light projector. It may be any type of sensor.

A controller (not shown) is connected to the level sensor 27, and if the cylinder 26 is driven based on the detection signal of the level sensor 27, when a predetermined amount of fallen powder is accumulated, it is automatically operated. The gate valve 25 can be opened. In the present invention, the opening 2
The cylindrical shell 1 forming 0 is preferably the first shell cylindrical shape 1 on the return side among the plurality of shells 1. In this case, most of the fallen powder is removed through the opening 20 provided in the first cylindrical shell 1, so that almost no fallen powder is deposited on the trough in the subsequent cylindrical shell 1.

[0012]

[0013] In addition, the first of the cylindrical shell 1 of the return side
When the dust removing device A is attached to the belt, the belt 4 reversed by the drive pulley 2 is attached to the return trough 12
On the other hand, it is preferable that the belt 4 is curved with the same curvature, and substantially the entire width of the belt 4 is installed in the return side trough 12 at a place where it is supported by an air film. The reason is that when the side is closer to the drive pulley 2, the guide roller bends the belt 4 with a curvature smaller than that of the return side trough 12 so that the end edge of the belt 4 does not contact the return side trough 12 and wear. This is because there is a possibility that a gap will be created between the belt 4 and all the fallen powder and it will not be possible to scrape it off. Then, as described above, if the belt 4 is supported by the return side trough with the same curvature and no gap is formed, it is preferable that the belt 4 is as close to the entry side of the return side belt as possible. By doing so, the amount of falling powder left on the trough up to the opening 20 can be reduced.

[0014]

According to the first aspect of the present invention, the powder of the conveyed material adhered to the surface of the belt is scraped off by the opening formed in the return trough and stored in the chute. Therefore, the air blowout holes for blowing out the air for forming the air layer between the belt and the trough will not be clogged. Also, the opening provided on the first cylindrical shell on the return side
Since the fallen powder is removed from the mouth, it is possible to remove fallen powder on the cylindrical shell afterwards.
Is hardly deposited. According to the second aspect of the present invention, when the amount of falling powder accumulated in the chute reaches a predetermined amount, the signal from the level sensor opens the gate valve to discharge the falling powder all at once, and normally the gate valve is closed to float the belt. It is possible to prevent the air from escaping.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a circular cylindrical shell of an air levitation conveyor provided with a falling powder removing device according to an embodiment of the present invention.

FIG. 2 is a side view around the falling powder removing device in a view taken along the line II-II in FIG.

FIG. 3 is a side view of a circular cylindrical shell provided with a falling powder removing device.

FIG. 4 is an overall side view of the air floating type conveyor of the present embodiment.

[Explanation of symbols]

1 tubular shell 4 belts 11 Carrier trough 12 Return trough 14 Air outlet 15 air ducts 20 openings 21 shoots 22 Upper shoot 23 Lower shot 24 discharge pipe 25 gate valve 26 Drive cylinder 27 Level sensor

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Claims (2)

(57) [Claims] 1. A conveyor in which a plurality of cylindrical shells are connected to each other
The head pulley and the tail pulley are connected at both ends.
The head pulley and the tail pulley.
The endless belt around the carrier and the carrier side
Running in the middle part so that it circulates with the turn side
In the tubular shell, the carrier trough that supports the carrier side belt is arranged in the upper stage, the return trough that supports the return side belt is arranged in the lower stage, and the trough for the carrier is arranged in the longitudinal direction at the bottom center of each trough. An air-floating conveyor in which a large number of air outlets are formed at intervals and the belt moves from the carrier side to the return side.
Forming an opening in the first cylindrical shell , and
The width of the opening is such that even if the belt meanders,
A dust removing device for an air levitation type conveyor, which has a size that does not take up, and a chute is provided below the opening, and a gate valve is attached to the chute. 2. A level sensor for detecting the accumulated amount of falling powder is attached to the chute, and when the accumulated amount of falling powder reaches a predetermined amount, the gate valve is opened by a command from the level sensor. The falling powder removing device for an air floating type conveyor according to claim 1, characterized in that.