JPH0654623U - Belt conveyor dust prevention device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a powder falling prevention device for a belt conveyor capable of effectively preventing powder falling in the tail portion of the conveyor. [Structure] In a powder fall prevention device for a belt conveyor, which prevents powder particles from falling from the transport belt, removes the adhered powder particles from the belt surface by contacting the transport belt, and removes the removed material in the center of the width of the transport belt. A guide cleaner that is provided at a predetermined angle with respect to the transportation direction so as to guide, and a guide cleaner that is provided on the upstream side of the powder and granular material supply point to prevent the supplied powder and granular materials from falling to the upstream side. And a powder fall prevention plate that is provided on the downstream side of the cut-off portion and that allows the removed material to pass on the downstream side through the notch.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fallout prevention device for a belt conveyor that prevents powdery particles from falling from a transportation belt.

[0002]

[Prior art]

 In the raw material yard, tilted conveyors or horizontal conveyors are used to transport iron ore, coal, and other particles. As shown in FIGS. 3 and 4, a fall prevention plate 7 and a side plate 8 are attached to the tail portion of the belt conveyor device in order to prevent the fall of the powder. The lower ends of the falling powder prevention plate 7 and the side plate 8 are pressed against the upper surface of the transport belt 6 so that the powder / grain material 9 supplied from the hopper 2 or the upstream conveyor does not fall from the transport belt 6.

[0003]

[Problems to be solved by the device]

 However, in the conventional apparatus, the powder particles 9 adhere to the surface of the transport belt 6, wrap around to the upstream side of the powder fall prevention plate 7, and are scraped off the belt 6 by the powder fall prevention plate 7. Occurs. That is, in the conventional apparatus, since the powder particles 9 sneaking into the upstream side are blocked by the falling powder prevention plate 7, the powder particles 9 gradually grow on the belt 6 like the accumulated materials 9a, 9b, 9c. Then, these fall from above the belt 6 and deposits 9d are formed at various places near the tail portion. As described above, the conventional device cannot sufficiently scrape off the powdery substances adhering to the surface of the conveyor belt and accumulates on the upstream side of the falling powder prevention plate 7 to cause falling powder, which lowers the transportation efficiency and the working environment. Is causing the deterioration of.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a falling powder prevention device for a belt conveyor, which can effectively prevent falling powder in the tail portion of the belt conveyor. And

[0005]

[Means for Solving the Problems]

 The device of the present invention is a fall prevention device for a belt conveyor that prevents falling of powder particles from the transport belt, removes adhered powder particles from the belt surface by contacting the transport belt, and removes the removed product from the transport belt. The guide cleaner is installed at a certain angle to the transport direction so as to guide it to the center of the width, and it is installed upstream of the powder and granular material supply location to prevent the supplied powder and granular materials from falling to the upstream side. At the same time, it has a dust-prevention plate that is provided on the downstream side of the guide cleaner and that allows the removed substance to pass on the downstream side through a notch.

[0006]

[Action]

 In the device for preventing falling of powder of the belt conveyor of the present invention, first, the adhering powder that has flowed up to the upstream side is scraped off from the belt surface by the guide cleaner, and this is sequentially guided to the downstream side. Since the guide cleaner is installed at a predetermined angle with respect to the transportation direction, the scraped scraps are transported toward the powder fall prevention plate while gathering in the center of the belt width. Furthermore, the removed material is transported to the downstream side through the cutout portion of the powder fall prevention plate, and finally falls from the conveyor head portion to the target position.

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the shaft 4 of the tail roller of the belt conveyor device 10 is supported by the mount 3 via bearings. The transport belt 6 is supported in place by a plurality of pairs of guide rollers 5. A hopper or an upstream belt conveyor (not shown) is provided above the transport belt 6 near the tail portion. Coal powder is contained in the hopper.

A falling powder prevention plate 21 and one or more pairs of side plates 8 are provided so as to surround a region directly below the hopper cutout port. The falling powder prevention plate 21 and the side plate 8 are made of a rubber plate having an appropriate hardness, and the lower ends of the plates are pressed against the upper surface of the transport belt 6. The falling powder prevention plate 21, the side plate 8, and each guide roller 5 are supported by the frame 3.

A side plate 28 is provided further upstream than the falling powder prevention plate 21 so as to be continuous with the side plate 8. Guide cleaners 29 extend from the inside of the pair of side plates 28 toward the center of the belt width. Two guide cleaners 29 extend from one side, and one guide cleaner 29 extends from the other side.

The three guide cleaners 29 are arranged in a staggered manner. Each of the guide cleaners 29 has a tip portion retracted in the transport direction rather than a mounting base portion. The receding angle of the guide cleaner 29 is set within the range of 45 ° ± 10 °. Further, the tip of the guide cleaner 29 reaches a position slightly over the central position of the belt width. Each guide cleaner 29 is made of a rubber plate having an appropriate hardness, or a chip type cleaner made of ceramic or wear-resistant alloy, and its lower end is pressed against the upper surface of the transportation belt 6. There is.

As shown in FIG. 2, three cutout portions 22 are formed in the lower portion of the falling powder prevention plate 21. The notch 22 is formed such that the total length of the notch 22 is about 30 to 50% of the width of the falling powder prevention plate 21. Next, the operation will be described.

Coal dust 9 is supplied onto the belt conveyor from a hopper or an upstream conveyor. As a result, a part of the coal powder 9 adheres to the transportation belt 6 and makes a round and goes around to the upstream side of the falling powder prevention plate 22. The adhering powder that has flowed to the upstream side is scraped off from the belt surface by the guide cleaner 29. Since the guide cleaner 29 is provided at a predetermined angle with respect to the transportation direction, the scraped removed substances are transported toward the falling powder prevention plate 21 while gathering in the width center of the transportation belt 6. Further, the removed substance is transported to the downstream side through the cutout portion 22 of the powder fall prevention plate 21, and finally falls from the conveyor head portion to the target position.

According to the apparatus of the above-mentioned embodiment, the amount of powder fallen at the conveyor tail portion, which has been conventionally 100 kg / week, can be reduced to 5 kg / week / location.

[0015]

[Effect of device]

 According to the present invention, it is possible to significantly reduce the amount of powder falling on the conveyor tail.

[Brief description of drawings]

FIG. 1 is a plan view showing a powder fall prevention device for a belt conveyor according to an embodiment of the present invention.

FIG. 2 is a view showing a falling powder prevention plate.

FIG. 3 is a front view showing a conventional powder falling prevention device for a belt conveyor.

FIG. 4 is a plan view showing a conventional powder falling prevention device for a belt conveyor.

Claims (1)

[Scope of utility model registration request] 1. A fall prevention device for a belt conveyor, which prevents powder particles from falling from a transportation belt, removes adhered powder particles from the belt surface by contacting the transportation belt, and removes the removed material from the width of the transportation belt. A guide cleaner provided at a predetermined angle with respect to the transportation direction so as to guide it to the center, and provided on the upstream side of the powder and granular material supply point to prevent the supplied powder and granular materials from falling to the upstream side. A powder fall prevention device for a belt conveyor, comprising a powder fall prevention plate which is provided on the downstream side of the guide cleaner and passes the removed material to the downstream side via a notch portion.