JP2000309419A - Belt cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a conveyed object from sticking to a belt with a small quantity of a mold releasing agent by abutting a scraper blade on a belt surface on the belt lower moving path start end side, and providing a coating means applying the mold releasing agent to the belt surface on the belt upper moving path start end side. SOLUTION: A belt conveyor 11 is provided with an endless belt 21 inclined upward to the front. A discharge chute 24 is arranged below a belt lower moving path start end, and a vertical band plate-like scraper blade 25 extending in the width direction of the belt 21 is arranged in the discharge chute 24 with its upper end abutted on the belt surface. A sprinkling nozzle 27 is arranged in the front of the scraper blade 25. A bubble chamber 31 is provided on the upstream side in the shifting direction of the belt 21 at the lower end section of a feed chute 23 of a conveyed object W, bubbles generated by foaming a foaming agent to serve as a mold releasing agent are fed from a bubble generating device 41, the mold releasing agent is applied to the belt surface, and the conveyed object W is suppressed from sticking on the belt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt cleaner, and more particularly, to a belt conveyor used for conveying iron ore, cement, coal, coke, etc., which prevents a conveyed substance from adhering to a belt surface. The present invention relates to a belt cleaner used for scraping a conveyed article remaining on a belt surface.

[0002]

2. Description of the Related Art In this type of belt cleaner, the upper end of a scraper blade is pressed against the belt surface at the beginning of a belt lower movement path, and the scraper blade scrapes off the conveyed material remaining on the belt surface. In order to make the transported material hard to adhere to the scraper blade,
2. Description of the Related Art A device provided with a sprinkler for sprinkling water on a conveyed object is known.

[0003]

As a sprinkler used in this type of belt cleaner, a type in which water is sprinkled using a high-pressure nozzle is known. There is a problem that the cost of water treatment after water sprinkling increases due to large consumption. In addition, if the nozzle hole diameter is reduced in order to reduce the amount of water, clogging will occur immediately. Furthermore, in order to prevent nozzle clogging, clean water must be used instead of industrial water, resulting in high running cost.

[0004] In addition, a nozzle using a two-fluid type and using air pressure in combination is also known.
This type consumes a large amount of air, so the running cost is extremely high and the equipment cost is also high.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, eliminate the risk of clogging like a nozzle, use a small amount of water, and thus reduce the running cost, and An object of the present invention is to provide an inexpensive belt cleaner such as an initial cost and a maintenance cost.

[0006]

In the belt cleaner according to the present invention, the upper end of the scraper blade is pressed against the belt surface at the beginning of the lower belt movement path, and the upper end of the belt upper movement path is located upstream of the conveyed material supply point. And a coating means for applying a release agent to the surface of the belt.

In the belt cleaner according to the present invention, since the release material is interposed between the belt and the object to be conveyed, the object to be conveyed easily falls from the end of the belt upper moving path, adheres to the belt, and is located at the scraper blade. There are few remnants transferred to Therefore, a small amount of remnants,
With the help of the release material, the scraper blade can efficiently scrape the material, and in this case, the amount of the release material applied is small. In addition, since there is no need to use something like a nozzle, there is no fear of clogging unlike a nozzle.

Further, if the release agent is made of a foaming agent, and the foaming agent is foamed to generate air bubbles, and the supply means for supplying the generated air bubbles to the coating means is provided, the air bubbles can be completely removed to a necessary portion. Can be applied uniformly, and bubbles after application do not flow carelessly. Also, compared to the volume of bubbles, the amount of water used is extremely small,
The running cost is low because no special wastewater treatment is required.

[0009] Further, the chute is arranged so that its lower end opening faces the supply position of the conveyed object, and a coating means is provided at a lower end opening edge of the chute at a required position at a lower opening bubble chamber. Is provided, air bubbles can be automatically applied to the belt by an operation of merely supplying air bubbles to the air bubble chamber.

[0010] It is further preferred that the bubble chamber extends in a direction transverse to the belt surface.

Further, when the bubble chamber is constituted by a horizontal seal chamber extending in a direction crossing the belt surface, and a pair of vertical seal chambers extending from both ends of the horizontal seal chamber toward the downstream side of the belt moving path, In addition to applying air bubbles to substantially the entire belt by the horizontal seal chamber, the vertical seal chamber can seal the side of the conveyed object dropped from the chute onto the belt.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

In the following description, the front and rear refer to the right side of FIG. 1 as a front and the opposite side to the rear with reference to FIG.
The left and right refer to the left and right sides when viewed from the front.

Referring to FIG. 1, a belt conveyor 11 is shown. The belt conveyor 11 has an endless belt 21 inclined forward and upward. The belt 21 can be deformed into a substantially gutter shape only when moving on the upper path by the guide roller group 22 arranged at an appropriate position.

A supply chute 23 is arranged above the start of the belt upper movement path, and a discharge chute 24 is arranged below the start of the belt lower movement path.

In the discharge chute 24, a vertical strip-shaped scraper blade 25 extending in a direction perpendicular to the belt is arranged so that the upper end thereof is pressed against the belt surface. The scraper blade 25 is urged upward by the elastic means 26.

A watering nozzle 27 is disposed in front of the scraper blade 25 so that its nozzle hole is directed slightly upstream of the sprayer blade 25.

At the lower end of the supply chute 23, an air bubble chamber 31 is provided integrally therewith. Bubble chamber 31
As shown in FIG. 2, the horizontal cross-section has a U-shape in cross section. The horizontal seal chamber 32 hangs down from the rear wall of the supply chute 23 and extends in the left-right direction. And a pair of left and right vertical seal chambers extending forward from both left and right ends of the horizontal seal chamber 32.
33. The horizontal seal chamber 32
As shown in FIG. 3, it has a rear end wall 32a and a top wall 32b, but lacks a bottom wall. Rear end wall 32a
An inner / outer back skirt 32c made of a rubber plate is provided at the lower end portion. A gap of about 1 to 3 mm is formed between the surface of the belt 21 and the lower edge of the back skirt 32c. As shown in FIG. 4, the vertical seal chamber 33 also has a side wall 33a and a top wall 33b having a double inner / outer structure, and also has a side skirt 33c.

The right vertical seal chamber 33 has a bubble inlet pipe.
34 are provided. The bubbles generated by the bubble generator 41 are supplied to the bubble inlet pipe.

Referring again to FIG. 1, the bubble generator 41
A bubble generator 52 having an inlet end connected to a bubble supply pipe 51 having an outlet end connected to a bubble inlet pipe 34;
The air conditioner includes a compressor 53 that feeds air to 52 and a liquid feed pump 55 that feeds a stock solution from a stock solution tank 54 to the bubble generator 52.

An undiluted solution tank 54 stores undiluted solution.
The stock solution is obtained by diluting the foaming agent to several percent with water. As the foaming agent, those containing an anionic surfactant as a main component and those based on animal proteins are used.

When a constant amount of bubbles B is supplied to the bubble chamber 31 while the conveyor 11 is operating, the bubble chamber 31
Air bubbles B overflowing from the belt 21 are applied to the surface of the belt 21.
In this case, the thickness of the bubble is preferably as thick as possible, but if it is too thick, it is not economical, so at least about 1 mm will be required.

The supply chute 23 is provided with a belt 21 coated with air bubbles.
Is passed through the chute 23 and the conveyed object W is dropped and supplied onto the belt. The transferred object W is the belt 21
When falling upward, the horizontal seal chamber 32 and both vertical seal chambers 33 prevent the transferred object W from scattering in three directions, that is, behind and on both left and right sides. A bubble B is interposed between the fed object W and the belt 21 in a compressed state.

When the transferred object W reaches the end of the belt upper movement path, most of the transferred object W is moved from the bubble B
With the help of, it can be dropped smoothly. The conveyed object W that has adhered to the belt 21 without being dropped is conveyed to the scraper blade 25, where the scraper blade 25
Thereby, it is scraped off together with the bubble B. Even if the scraped transported product W tries to adhere to the scraper blade 25, the scraped transported product W stays in the vicinity of the scraper blade 25 because the bubble B that is scraped off prevents the deposition. Without being dropped along the scraper blade 25.

When the object W on the belt surface is scraped off by the scraper blade 25, the object W
The water may be sprayed from the watering nozzle 27. This need not always be the case, but only when needed. Further, instead of the water spray nozzle 27, a foam gun (not shown) may be used to blow air bubbles directly to the vicinity of the scraper blade 25.

In the above, instead of opening the entire bottom wall corresponding portion of the bubble chamber for applying bubbles to the belt, a bottom wall is provided in the bubble chamber and a bubble injection hole is provided in a required portion of the bottom wall. It may be.

[0027]

According to the present invention, there is no danger of clogging unlike a nozzle, and a small amount of water is used. Therefore, a running cost is low, and an inexpensive belt such as initial cost and maintenance cost is used. A cleaner is provided.

[Brief description of the drawings]

FIG. 1 is a side view of a belt cleaner according to the present invention.

FIG. 2 is a horizontal cross-sectional view taken along the line II-II of FIG.

FIG. 3 is a vertical sectional view taken along a line III-III in FIG. 2;

FIG. 4 is a cross-sectional view perpendicular to the line IV-IV in FIG. 2;

[Explanation of symbols]

 21 Belt 23 Chute 25 Blade 31 Bubble chamber 32 Horizontal seal chamber 33 Vertical seal chamber B Bubble W Workpiece

Claims (5)

[Claims] An upper end of a scraper blade 25 is pressed against a surface of the belt 21 at a start end of a lower moving path of the belt 21,
A belt cleaner provided with an application unit for applying a release agent to the surface of the belt 21 at the upstream end of the belt 21 upper moving path at the location where the conveyed articles are supplied. 2. The belt cleaner according to claim 1, wherein the release agent comprises a foaming agent, and the supply unit supplies foaming agent to the foaming agent to generate air bubbles and supplies the generated air bubbles to an application unit. . 3. A chute 23 is arranged so that its lower end opening faces the place where the conveyed object is to be supplied, and a coating means is provided at the lower end opening edge of the chute 23 at such a required place. 3. The bell cleaner according to claim 2, comprising an open bubble chamber. 4. The belt cleaner according to claim 3, wherein the bubble chamber extends in a direction transverse to the surface of the belt. 5. An air bubble chamber 31 includes a horizontal seal chamber 32 extending in a direction transverse to the surface of the belt 21 and a pair of vertical seal chambers 33 extending from both ends of the horizontal seal chamber 32 toward the downstream side of the belt 21 moving path. The belt cleaner according to claim 3, wherein the belt cleaner is configured.