JP2001139119A - Air floating type belt conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To finely control every specified portion of the amount of air for floating a belt according to an installing form. SOLUTION: An air floating type belt conveyer 1 is traveled by supplying air to between a trough 3 and the belt 2 through air holes aligned in the length direction of the trough 3 to float the belt 2, and an air amount control device 4 for controlling the supply amount of air every air hole in the specified region is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor for transporting a lump, granular, or powdery load of ore, coal, grain, and the like, and more particularly, to an air levitation in which a belt travels while being floated by an air layer. The present invention relates to a belt conveyor.

[0002]

2. Description of the Related Art In general, a belt conveyor is used to convey a lump, granular, or powdery load of ore, coal, grain, or the like. An example of such a conveyor is shown in FIG. The belt conveyor shown in this figure is provided with a carrier-side trough 102 and a return-side trough 103 having an arc-shaped cross section, and a belt 101 on which a load is placed is disposed on the upper surface thereof.
3. Air is supplied between the belt 10 and the belt 10 to form an air layer.
An air levitation system in which the vehicle 1 travels while levitating is used.

[0003] This belt conveyor has ducts 105, 105 on the lower surface of each trough 102, 103 for guiding the belt 101.
Each of the troughs 102 and 103 is provided with a number of air holes 104 at the center in the width direction along the longitudinal direction. Then, air is blown upward from each air hole 104 by sending air from the blower 107 to each duct 105, 106, thereby forming an air layer between the belt 101 and each trough 102, 103, and forming each trough. The belt 101 that moves on 102 and 103 floats.

[0004] By adopting such a configuration, the air levitation type belt conveyor can greatly reduce the resistance acting on the belt as compared with the conventional roller type belt conveyor, and can reduce the burden of driving the belt. Further, noise and vibration can be reduced.

[0005]

However, the above-mentioned conventional air-floating type belt conveyor has the following problems. When a load is transported between places having a difference in height, a back portion of a horse that bends to form a convex portion and a catenary portion that forms a concave portion by bending are formed on a conveyor, and each portion forms a belt. It is necessary to increase or decrease the applied levitation force.

Specifically, in the back portion of the horse, a force acts in a direction in which the belt is pressed against the trough, whereas in a catenary portion, a force acts in a direction in which the belt moves away from the trough. In this case, if the blower is driven in the same manner as in the horizontal state, the belt will not float at the back of the horse, and will contact the trough, hindering running.On the contrary, the belt will rise more than necessary at the catenary. .

Therefore, it is conceivable that the air sent from the blower is branched and supplied to the back, catenary, and horizontal blocks of the horse, and the amount of air is adjusted for each block. However, even in this case, there has been a demand to finely adjust the air amount at a specific portion, for example, by increasing the force for lifting the belt at the top of the bent portion even at the back of the horse in the same block.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides an air-floating belt conveyor capable of finely adjusting the amount of air for levitating a belt according to an installation mode for each specific location. With the goal.

[0009]

In order to achieve the above object, the present invention employs the following constitution. The air levitation type belt conveyor according to claim 1, wherein air is supplied between troughs and a belt through air holes arranged along a length direction of the trough, and the belt is levitated. An air-floating type belt conveyor, comprising an air amount adjusting device for adjusting the supply amount of the air for each air hole in a specific area.

Therefore, in the air-floating belt conveyor of the present invention, by operating the air amount adjusting device, for example, the amount of air supplied through the air hole in the region where a greater force is applied even at the back of the horse is increased, and the catenary Even in the part, the amount of air supplied through the air hole in a region where little force is applied can be reduced.

Further, in the air levitation belt conveyor according to the second aspect, in the air levitation belt conveyor according to the first aspect, a plurality of the air holes are arranged along a width direction of the trough. It is assumed that.

Therefore, in the air-floating belt conveyor according to the present invention, even if the air holes are partially closed by the weight of the load at a certain position of the trough, air is supplied through the other air holes. By doing so, the floating state of the belt can be maintained.

According to a third aspect of the present invention, the air holes are arranged at different pitches depending on the arrangement with respect to the trough. It is characterized by the following.

Therefore, in the air-floating belt conveyor of the present invention, a large number of air holes are arranged at a small pitch in a region where a larger force is applied, and a small number of air holes are arranged at a large pitch in a region where a large force is not applied. Can be arranged.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air-floating belt conveyor according to the present invention will be described below with reference to FIGS. This air-floating belt conveyor is installed to convey a lump, granular, or powdery load such as ore, coal, and grain, and a belt for loading the load is rotated by a drive mechanism (not shown). It is schematically configured.

A belt conveyor 1 shown in FIG.
And an arc-shaped trough 3 for guiding the belt 2,
The apparatus mainly comprises an air amount adjusting device 4 for adjusting the amount of air supplied between the belt 2 and the trough 3.

As shown in FIG. 2, the trough 3 has air holes 5 arranged in series in the center in the width direction and at both sides of the center at substantially equal intervals in the width direction along the length of the trough 3. Are arranged in a plurality. The arrangement pitch of the air holes 5 along this length direction is the horizontal linear portion 1 in the back 1a of the horse shown in FIG.
c, and larger than the horizontal straight portion in the catenary portion 1b.

The air amount adjusting device 4 includes a blower 7 for supplying air through an air supply pipe 6, a duct 8 provided on a lower surface of the trough 3, and a connection for connecting each duct 8 to the air pipe 6. A pipe 9 and an adjusting valve 10 provided in each connection pipe 9
As shown in FIG. 3, each regulating valve 1
0 is provided with an adjustment handle 11, respectively. The duct 8, the regulating valve 10, and the like are provided for each row of the air holes 5 in the back portion 1a and the catenary portion 1b of the horse, and are provided in a plurality of rows for the horizontal straight portion 1c.

The operation of the belt conveyor 1 having the above configuration will be described below. The air of a predetermined pressure supplied from the blower 7 is sent into each duct 8 through the air supply pipe 6 and the connection pipe 9, and blows out from each air hole 5 toward the upper surface of the trough 3. Then, an air layer is formed between the trough 3 and the belt 2, and the belt 2 can be run in a floating state by using the static pressure of the air layer.

Here, by adjusting each adjusting valve 10 in the air amount adjusting device 4, the supply amount of air per unit time is increased in the air hole 5 in the horse back 1a, and conversely, the air hole in the catenary portion 1b is increased. In 5, the supply amount of air per unit time is reduced. For example, assuming that the amount of air per 1 minute in the back 1a of the horse is 1 in the horizontal straight section 1c
About 1/2 of the air volume, and 1/3 of the catenary part 1b.
Set to about air volume. Further, even in the back 1a of the horse, the regulating valve 10 is opened at the air hole 5 where the curvature is large and a large force is applied to the belt 2 (for example, 5a) to increase the air supply amount. Conversely, in the catenary portion 1b, at the air hole 5 where the curvature is large and the force applied to the belt 2 is small (for example, 5b), the regulating valve 10 is throttled to reduce the amount of air supply. As a result, air necessary for floating the belt 2 is efficiently and appropriately supplied to the back 1a and the catenary 1b of the horse.

As described above, in the air-floating belt conveyor according to the present embodiment, not only the air supply amount can be adjusted for each block of the horse back 1a, catenary 1b, and horizontal straight section 1c, but also the conveyor can be adjusted. The amount of air can be finely adjusted for each air hole 5 in a specific area according to the installation mode of the belt, so that the belt 2 can always be levitated and run in an appropriate state, and when the installed belt conveyor 1 is tested for operation, Can be adjusted easily and quickly, and the work efficiency is improved.

Further, in the belt conveyor of the present embodiment, the air supplied from the blower 7 is not branched into each block, and the connection pipe 9 is connected to one air supply pipe 6 so that the air supply pipe 6 can be connected. , The installation space becomes compact and the cost can be reduced.

Further, in the present embodiment, since a plurality of air holes 5 are arranged in each row in the width direction of the trough 3, one air hole 5 is provided at a certain position of the trough 3 due to the weight of a load or the like. Even if 5 is closed, air can be ejected from other air holes, and the floating state of belt 2 can be reliably maintained. Further, by increasing the arrangement pitch of the air holes 5 in the back 1a of the horse and increasing it in the catenary 1b, the air necessary for floating the belt 2 can be efficiently and appropriately supplied according to the shape and arrangement of the trough 3. Becomes possible.

In the above-described embodiment, the duct 8 of the horse back 1a and the catenary 1b, the regulating valve 10 and the like are provided for each row in which the air holes 5 are arranged. However, the present invention is not limited to this. For example, in regions other than the region that requires particularly fine adjustment such as the portion 5a in the back 1a of the horse and the portion 5b in the catenary portion, as shown in FIG. Duct 8, regulating valve 1
A configuration in which 0 or the like is provided may be employed.

[0025]

As described above, the air levitation type belt conveyor according to the first aspect is configured such that the air amount adjusting device adjusts the supply amount of air for each air hole in a specific area. As a result, in this air levitation type belt conveyor,
The amount of air supply can be fine-tuned according to the installation form, and the belt can always be levitated and run in an appropriate state.
Even when the installed belt conveyor is tested, the on-site adjustment can be easily and quickly performed, and the effect that the working efficiency is improved can be obtained.

The air-floating belt conveyor according to claim 2 has a configuration in which a plurality of air holes are arranged along the width direction of the trough. Thus, in this air levitation type belt conveyor, even if one air hole is closed due to the weight of a load or the like, air can be ejected from another air hole, and the floating state of the belt can be reliably maintained. The effect is obtained.

The air-floating belt conveyor according to the third aspect has a configuration in which the air holes are arranged at different pitches depending on the arrangement with respect to the trough. As a result, according to the air levitation type belt conveyor, it is possible to efficiently and appropriately supply air necessary for levitation of the belt according to the shape and arrangement of the trough.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, and is a side view showing a part of an air-floating belt conveyor.

FIG. 2 is a plan view in which three air holes are arranged in series in the width direction of the trough.

FIG. 3 is a sectional view in FIG.

FIG. 4 is a plan view showing another configuration example of the duct.

FIG. 5 is an external perspective view showing an example of a conventional air levitation type belt conveyor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Belt conveyor 2 Belt 3 Trough 4 Air volume adjusting device 5 Air hole

Claims (3)

[Claims] 1. An air-floating belt conveyor that supplies air between troughs and a belt through air holes arranged along the length of the trough, and runs the belt in a floating state. An air-floating belt conveyor, further comprising an air amount adjusting device that adjusts the supply amount of the air for each of the air holes in a specific area. 2. The air levitation belt conveyor according to claim 1, wherein a plurality of the air holes are arranged along a width direction of the trough. 3. The air levitation belt conveyor according to claim 1, wherein the air holes are arranged at different pitches depending on the arrangement with respect to the trough.