JP2003261213A - Air floating type belt conveyer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce cost and to improve cleaning workability in removing dust accumulated on a belt surface of an air floating type belt conveyer and a groove formed of a belt side surface and a side wall of a trough. <P>SOLUTION: A washing water 33 is supplied to a clearance 40 formed of a belt 4 of the air floating type belt conveyer 1 and the return-side trough 6, and the dust 38 in the belt conveyer 1 is washed away together with the washing water 33 in response to a revolving operation of the belt conveyer 1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor that conveys loose materials such as ores and coal, and relates to an air levitation belt conveyor that allows a belt to run while being floated by an air layer.

[0002]

2. Description of the Related Art In recent years, as a belt conveyor for transporting bulk materials such as ores and coal, a belt for loading bulk materials is supported by a trough having an arc-shaped cross section, and the belt is floated by an air layer formed on the trough. Air floating belt conveyors have been proposed for traveling.

FIG. 8 shows an example of a conventional air levitation type belt conveyor of this type. The air levitation type belt conveyor 50 includes pulleys 51, 52, a loop-shaped belt 53 wound around these pulleys, a trough 54 arranged below each of the carrier side and the return side of the belt 53,
55 and a blower 56 as main constituent elements.

As shown in FIG. 9, in the troughs 54 and 55 on the carrier side and the return side, a large number of air holes 61 are arranged in the longitudinal direction at the central portions in the width direction. An air duct 62 communicating with each air hole 61 is provided on the lower surface. The troughs 54 and 55 are fixed to the conveyor frame 63. The blower 56 is connected to the air duct 62 by an air supply pipe 64, and a flow control valve 65 is provided in the middle of the air supply pipe 64.
Is intervening.

As shown in FIGS. 9 to 11, the belt 53
A groove 71 is formed between the end surface of the belt and the conveyor frame 63, and the dimension of the groove 71 is 50 so that the belt 53 does not meander.
It is adjusted to about mm to 100 mm. Further, a hole 72 is formed in the conveyor frame 63, and the lid 7 is provided in the hole 72.
3 is tightly fitted.

As shown in FIG. 12, a cleaning device 74 located below the return trough is provided near the pulley 52. The cleaning device 74 is for cleaning the lower surface of the return side belt, and includes a nozzle 75, a supply source 77 for supplying cleaning water 76 to the nozzle 75, a roller 78 for holding the return side belt at a fixed position, It is composed of cleaners 79 and 80 for cleaning the lower surface of the belt and a water collecting chute 81 for receiving the cleaning water 76.

Further, a carry-in port 91 shown in FIG. 8 is used to load an object to be conveyed 92 into the air floating belt conveyor 50, and a carry-out port 93 is to carry a material to be conveyed 92 carried by the air floating belt conveyor 50. Is to be carried out.

In the air levitation type belt conveyor 50 thus constructed, air is sent from the blower 56 shown in FIG. 9 so that the air is supplied to the troughs 54 and 55 through the air supply pipe 64 and the air duct 62. The air layer 94 shown in FIG. 10 is formed in the gap between the belt 53 and the troughs 54, 55 by jetting upward from the hole 61. Air layer 94
As a result, the frictional resistance between the belt 53 and the troughs 54, 55 is reduced, and when the pulleys 51, 52 at both ends rotate, the transported object 92 shown in FIG. 8 is smoothly transported from the loading port 91 to the loading port 93. To be done.

Such an air floating belt conveyor 50
In this operation, when the air levitation type belt conveyor 50 is operated for a certain period of time, the dust 95 adheres to the belt 53 shown in FIG.
Further, when the belt 53 travels on the return side trough 55 side, the dust 95 flows toward the air flow 96 ejected from the air duct 65 and accumulates in the groove 71 shown in FIG. 11. When the dust 95 accumulates in the groove 71 and the belt 53 in this way, the belt 53 may not run properly or leak air.
Since abnormal noise and vibration may occur, it is necessary to regularly clean the air levitation belt conveyor 50 by the following two cleaning operations.

The first method is a method of removing the dust 95 accumulated in the groove 71 by the vacuum cleaner 97 shown in FIG. 11. The lid 73 is removed from the hole 72 and the dust is removed by the vacuum cleaner 97 from the direction indicated by reference numeral 98. 95 is sucked and removed. The second method is a method of scraping off the dust 95 adhering to the belt 53 by the cleaning device 74 shown in FIG. 12, and the cleaning water 76 is supplied from the supply source 77 to the surface of the belt 53 through the nozzle 75 and the belt 5
The dust 95 adhering to 3 is scraped off by the frictional force of the cleaners 79 and 80, and is made to flow to the water collecting chute 81 together with the cleaning water 76.

[0011]

As described above, the conventional air levitation type belt conveyor stops the operation of the air levitation type belt conveyor 50 when performing the cleaning work with the above vacuum cleaner. Therefore, there is a problem in that the productivity of the transporting process is reduced as the transport of the transported object 92 is stopped. In addition, there is a problem that the cleaning work is wasted and the cleaning work cost is generated.

Further, when the lid 73 is fitted into the hole 72 after the cleaning operation is completed, it is necessary to have an airtight structure with high sealing property, so that there is a problem that the lid 73 is not easily attached and detached.

Further, the cleaning by the belt cleaning device 74 has a problem that the dust 95 accumulated in the groove 71 cannot be removed.

The present invention has been made in view of the above circumstances, and an object thereof is to reduce waste of cleaning work time and cleaning work cost, and to eliminate cleaning work by a vacuum cleaner. To provide a floating belt conveyor.

[0015]

In order to solve the above-mentioned problems, the present invention proposes the following means. According to a first aspect of the present invention, troughs are respectively arranged below the carrier-side belt and the return-side belt, and air is blown upward from the trough side to give a levitation force to the belt. Further, a water injection nozzle for supplying cleaning water for rinsing dust is provided between the belt on the return side and the trough on the return side. According to the air floating belt conveyor of the present invention, by providing the water injection nozzle for supplying the cleaning water between the belt and the return side trough, the cleaning water supplied between the belt and the return side trough is The dust supplied to the clearance on the return side trough and attached to the belt as the belt travels around can be washed away, and the dust accumulated in the groove between the return side trough and the conveyor frame can be washed away.

According to a second aspect of the present invention, in the air floating belt conveyor according to the first aspect, the trough on the return side is arranged below the belt, and its cross-sectional shape has a central portion upward. A conveyor frame is provided in the vicinity of the side edge of the belt of the trough on the return side so as to extend in a direction substantially orthogonal to the extension direction of the side edge of the belt, and the conveyor frame is continuously provided. The cleaning water groove is formed between the return-side trough and the conveyor frame. According to the air floating belt conveyor of the present invention, the cleaning water supplied from the water injection nozzle flushes away dust accumulated in the groove between the return side trough and the conveyor frame as the belt orbits, and at the same time as the return side trough. Since the belt runs in the groove formed by the conveyor frame while being immersed in the cleaning water, the flow of the cleaning water can be promoted and the friction and impact between the belt and the conveyor frame can be softened.

According to a third aspect of the present invention, in the air levitation type belt conveyor according to the second aspect, cleaning water supplied from a cleaning water supply source is jetted to the lower surface of the belt on the return side below the belt. Is provided, and the cleaning water supplied to the water injection nozzle is supplied from the cleaning device. According to the air levitation type belt conveyor according to the present invention, the cleaning water sprayed by the nozzle of the cleaning device and the cleaning water sprayed by the water injection nozzle of the belt conveyor are supplied from the same supply source. The configuration can be simplified.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a schematic configuration of an air levitation type belt conveyor according to an embodiment of the present invention, FIG. 2 is a perspective view taken along line BB in FIG. 1, and FIG.
2 is a sectional view taken along the arrow C in FIG. 2, and FIG. 4 is a reference numeral 2 in FIG.
6 is an enlarged view of a portion 0, FIG. 5 is an enlarged view showing the main part of FIG.
1 is a side sectional view of a portion 16 in FIG. 1, and FIG. 7 is a side sectional view of a portion 17 in FIG.

As shown in FIG. 1, the air levitation type belt conveyor 1 of this embodiment has pulleys 2 and 3, a looped belt 4 wound around these pulleys, a carrier side and a return side of the belt 4. Troughs 5 located below each of the
6, a blower 7 for giving a levitating force to the belt 4, and a belt 4
The main components are a water injection nozzle 8 for supplying cleaning water to the above and a drain 9 for receiving waste water.

As shown in FIG. 2, the troughs 5 and 6 on the carrier side and the return side are provided with a large number of air holes 11 in a row at the center in the width direction along the longitudinal direction. Is provided with an air duct 12 communicating with each air hole 11. The troughs 5 and 6 are fixed to the conveyor frame 13. The blower 7 is connected to the air duct 12 by an air supply pipe 14, and a flow rate control valve 15 is interposed in the middle of the air supply pipe 14.

The cleaning device 10 shown in FIG. 6 is arranged near the pulley 2 and has a nozzle 25 and a roller 26.
And a cleaning water supply source 27, a cleaner 28, and a water collecting chute 29. Further, the air floating belt conveyor 1 is provided with a carry-in port 31 and a carry-out port 32 shown in FIG. These structures are similar to those of the conventional air floating belt conveyor 50 shown in FIG.

In this pneumatic belt conveyor 1,
As shown in FIG. 6, a water injection nozzle 8 is provided inside the cleaning device 10, and the water injection nozzle 8 is supplied with the cleaning water 33 from the same cleaning water supply source 27 as the cleaning device 10. Cleaning water 33 supplied by this water injection nozzle 8
Is injected onto the lower surface of the belt 4 and is supplied between the return-side trough 6 and the belt 4.

Further, as shown in FIG. 3, the return-side trough 6 is disposed below the belt 4, and its cross-sectional shape is an arc shape with its central portion bulging upward. A conveyor frame 13 is continuously provided in the vicinity of the side edge of the belt 4 of the return side trough 6 so as to extend in a direction substantially orthogonal to the extension direction of the side edge of the belt.
A groove 34 is formed as a flow path of the cleaning water between the conveyor frame 13 and the conveyor frame 13.

Further, as shown in FIG. 7, the drain 9 is provided in the vicinity of the pulley 3, and when the cleaning water 33 flows through the groove 34 as the belt 4 orbits, the cleaning water 33 becomes waste water 35. It flows out from the right end surface of the return side trough 6 and flows into the drain 9.

Next, the air floating type belt conveyor 1 described above.
The operation of will be described. When the air levitation type belt conveyor 1 shown in FIG. 1 is activated, the pulleys 2 and 3 rotate and the belt 4 is driven along the rotation direction of the pulleys 2 and 3. In this state, when the blower 7 shown in FIG. 2 sends in air, the air is jetted upward from the air holes 11 of the troughs 5 and 6 through the air supply pipe 14 and the air duct 12, and the belt 4 shown in FIG. An air layer 36 is formed between the troughs 5 and 6 and the frictional resistance is reduced, and the transferred object 37 shown in FIG. 1 is smoothly transferred from the carry-in port 31 to the carry-out port 32. In this state, when the transported object 37 is put into the belt 4, dust 38 shown in FIG. 5 in which the transported object 37 slightly remains is attached to the surface of the belt 4. Further, the dust 38 having a weak adhesive force flows along the flow 39 of the air ejected from the air holes 11 to the groove 34 shown in FIGS. 3 and 4, and is deposited.

In this state, the water injection nozzle 8 shown in FIG. 6 discharges the cleaning water 33 toward the lower surface of the belt 4, and the cleaning water 33 is supplied to the gap 40 of the return side trough 6 shown in FIG. As the vehicle travels 4 times, it spreads throughout the gap 40. In the gap 40 shown in FIG.
Flow into the groove 34 toward the flow 39 of the air discharged from the air hole 11, and the water forming layer 4 in the groove 34 shown in FIG.
1 is formed. The water forming layer 41 flows in the longitudinal direction of the groove 34 as the belt 4 travels around, and the water forming layer 41 is discharged to the drain 9 as waste water 35 shown in FIG. 7.

When the water forming layer 41 shown in FIG. 4 flows toward the drain 9 along the longitudinal direction of the groove 34, the water forming layer 41 is interposed between the belt 4 and the conveyor frame 13. When friction or impact when the belt 4 meanders occurs in the groove 34, the water forming layer 41 reduces the friction or impact.

In this state, by providing the water injection nozzle 8 for supplying the cleaning water 33 between the belt 4 and the return side trough 6, the cleaning water 33 supplied between the belt 4 and the return side trough 6 is provided. And the gap between the return trough 4
0, the dust 38 adhering to the belt 4 as the belt 4 travels around is washed away, and the dust 38 accumulated in the grooves 34 between the return trough 6 and the conveyor frame 13 is washed away.

The cleaning water 33 supplied from the water injection nozzle 8 is returned to the return trough 6 as the belt 4 travels around.
3 accumulated in the groove 34 between the conveyor frame 13 and the conveyor frame 13.
8 is washed away, and the belt 4 runs in the groove 34 formed by the return trough 6 and the conveyor frame 13 while being immersed in the cleaning water 33, so that the flow of the cleaning water 33 is accelerated. Further, when friction or impact when the belt 4 meanders occurs in the groove 34, friction and impact between the belt 4 and the conveyor frame 13 are alleviated.

Further, the nozzle 2 of the cleaning device 10 shown in FIG.
Washing water 42 sprayed by 5 and an air floating belt conveyor 1
Since the cleaning water 33 sprayed from the water injection nozzle 8 is supplied from the same cleaning water supply source 27, the structure of the air floating belt conveyor 1 is simplified.

As described above, in this air floating type belt conveyor, since the water injection nozzle 8 for supplying the cleaning water 33 is provided between the belt 4 and the return side trough 6,
The cleaning water 33 supplied between the belt 4 and the return-side trough 6 is supplied to the gap 40 between the belt and the return-side trough to wash away the dust 38 adhering to the belt 4 as the belt 4 orbits and returns. The dust 38 accumulated in the groove 34 between the side trough 6 and the conveyor frame 13 can be washed away.

Further, the cleaning water 33 supplied from the water injection nozzle 8 is accompanied by the traveling of the belt 4 around the return side trough 6
3 accumulated in the groove 34 between the conveyor frame 13 and the conveyor frame 13.
8 is washed away, and the belt 4 travels in the groove 34 formed by the return trough 6 and the conveyor frame 13 while being immersed in the cleaning water 33. Therefore, the flow of the cleaning water 33 is promoted, and the belt 4 and the conveyor frame 13 are accelerated. The friction and impact with 13 can be softened.

Further, since the cleaning water 42 sprayed by the nozzle 25 of the cleaning device 10 and the cleaning water 33 sprayed by the water injection nozzle 8 of the air floating belt conveyor 1 are supplied from the same cleaning water supply source 27, the air is floated. The structure of the belt conveyor 1 can be simplified.

When the air levitation type belt conveyor 1 as described above is operated for a certain period of time and the dust 38 adhered to the surface of the belt 4 remains, the dust adhered to the belt 4 is removed by the cleaning device 10 shown in FIG. Shave off 38. These cleaning methods are the same as those of the conventional air floating belt conveyor.

In this embodiment, the water injection nozzle 8 is provided in the cleaning device 10 and the cleaning water 33 is supplied to the gap 40 between the belt 4 and the return side trough 6, but water may be injected into the groove 34. .

Further, in the present embodiment, the surface shape of the belt end surface 21 is a flat surface, but it is not limited to a flat surface shape and may be another shape such as a convex shape.

[0037]

As described above, according to the invention of claim 1, since the water injection nozzle for supplying the cleaning water is provided between the belt and the return trough, the water is supplied between the belt and the return trough. The cleaning water is supplied to the gap between the belt and the return trough, and the dust adhering to the belt as the belt travels can be washed away. The effect that the accumulated dust can be washed away is obtained.

According to the second aspect of the present invention, the cleaning water supplied from the water injection nozzle flushes away dust accumulated in the groove between the return side trough and the conveyor frame as the belt orbits, and at the same time as the return side trough. Since the belt runs in the groove formed by the conveyor frame while being immersed in the cleaning water, the flow of the cleaning water can be promoted, and the effect of reducing the friction and impact between the belt and the conveyor frame can be obtained. To be

According to the third aspect of the invention, the cleaning water sprayed by the nozzle of the cleaning device and the cleaning water sprayed by the water injection nozzle of the belt conveyor are supplied from the same supply source.
The effect that the structure of the air floating type belt conveyor can be simplified is obtained.

[Brief description of drawings]

FIG. 1 is a side view showing a schematic configuration of an air floating belt conveyor according to an embodiment of the present invention.

FIG. 2 is a diagram showing an air floating belt conveyor according to an embodiment of the present invention, and is a perspective view taken along the line BB in FIG.

FIG. 3 is a view showing an air floating belt conveyor according to an embodiment of the present invention and is a cross-sectional view taken along the arrow C in FIG.

FIG. 4 is a view showing an air floating belt conveyor according to an embodiment of the present invention, and is an enlarged view of a portion 20 in FIG.

FIG. 5 is a view showing an air floating belt conveyor according to an embodiment of the present invention, and is an enlarged view showing a main part of FIG. 3.

FIG. 6 is a side sectional view of the part 16 in FIG. 1, showing an air floating belt conveyor according to an embodiment of the present invention.

FIG. 7 is a diagram showing an air floating belt conveyor according to an embodiment of the present invention, and is a side sectional view of a portion 17 in FIG. 1.

FIG. 8 is a side view showing a schematic configuration of an air levitation type belt conveyor shown as an example of a conventional air levitation type belt conveyor.

9 is a view showing an air levitation type belt conveyor shown as an example of a conventional air levitation type belt conveyor, and is a perspective view taken along line HH of FIG. 8. FIG.

FIG. 10 is a diagram showing an air levitation belt conveyor shown as an example of a conventional air levitation belt conveyor,
It is sectional drawing shown by the arrow I of FIG.

FIG. 11 is a view showing an air levitation belt conveyor shown as an example of a conventional air levitation belt conveyor,
It is an enlarged view of the code | symbol 58 part in FIG.

FIG. 12 is a view showing an air levitation belt conveyor shown as an example of a conventional air levitation belt conveyor,
FIG. 9 is an enlarged view of a portion indicated by reference numeral 57 in FIG. 8.

[Explanation of symbols]

1 Air levitation belt conveyor 4 belts 5 Carrier side trough 6 Return side trough 8 water injection nozzle 10 Cleaning device 13 Conveyor frame 27 Wash water supply source 33 Wash water 34 groove 38 dust

Claims (3)

[Claims] 1. An air levitation type belt conveyor in which troughs are arranged below the belts on the carrier side and the return side, respectively, and air is jetted upward from the troughs to give a levitation force to the belts. An air levitation type belt conveyor, characterized in that a water injection nozzle for supplying washing water for washing away dust is provided below the return side belt between the belt and the return side trough. 2. The air levitation type belt conveyor according to claim 1, wherein the trough on the return side is disposed below the belt, and the shape of the cross section thereof is bulged with its central portion directed upward. In the vicinity of the side edge of the belt of the return side trough, a conveyor frame is continuously provided so as to extend in a direction substantially orthogonal to the extension direction of the side edge of the belt, and the return side trough An air levitation type belt conveyor, wherein the cleaning water groove is formed between the conveyor frame and the conveyor frame. 3. The air levitation type belt conveyor according to claim 2, wherein a cleaning device for injecting cleaning water supplied from a cleaning water supply source to the lower surface of the belt on the return side below the belt and cleaning the same. An air levitation type belt conveyor, wherein cleaning water is provided and supplied to the water injection nozzle from the cleaning device.