JPH11334853A - Belt cleaner for belt conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily scrape off the sticky attached matters of comparatively fine particles by mounting a pair of scrapers on a surface of a belt of a belt conveyor at the front and rear parts in the belt advancing direction, and mounting the rollers for receiving the belt on a rear face of the belt at an intermediate between the pair of scrapers. SOLUTION: A pair of brackets 2 are mounted in the advancing direction of a belt 1 of a belt conveyor, and the brackets 2 respectively comprise two arms 4, 5 of which the basic portions are pivotted by the pins 5. The other ends of the left and right opposite arms 3, 4 are connected by the scraper supporting rods 6, that is, the arm 3 is connected with the relative arm 3 and the arm 4 is connected to the relative arm 4 through the scraper supporting rods 6. The scraper supporting rods 6 comprise a plurality of cleaner plates 7 to form a pair of scrapers 8 or the like. The ring-shaped rollers 13 receiving the belt 1 are mounted on the brackets 2 through a rotary shaft at the rear face of the belt 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt cleaner for scraping off material adhering to a belt surface of a belt conveyor, and more particularly to a two-stage scraping belt in which a pair of scrapers are arranged on the belt surface of the belt conveyor before and after in the belt traveling direction. About cleaners.

[0002]

2. Description of the Related Art In reality, the return side belt of a belt conveyor is not a flat shape but a curve, and it is difficult to press the entire width of the belt with the conventional single-stage scraper system. As a measure, there is a structure in which the width of the scraper is divided into small parts and the pressing force can be adjusted for each, etc. Even if the deposit was once raked by the cleaner, the deposit did not fall but contacted the lower return roller and again adhered to the roller, causing the belt to meander.

[0003]

As described above, since the return belt of the belt conveyor is usually curved rather than flat, it is difficult to scrape off the adhered matter on the belt. Therefore, the width of the scraper is divided into a plurality of parts. Each of them has a structure that makes contact with the belt surface by using the bending of the spring.However, the pressing force of the belt is small, and the single-stage scraper can sufficiently scrape off the deposits. Did not.

[0004] On the other hand, there is a structure in which a belt surface is forcibly pressed strongly and a scraper is brought into contact with the entire width of the belt to scrape off the deposits. However, this is often limited to a very low-speed conveyor. There is a drawback that the belt conveyor is costly to manage due to severe wear of the cleaner and cleaner chips. Therefore, in recent years, there has been a demand for the development of a belt cleaner capable of sufficiently removing sticky deposits having relatively fine particles without strongly suppressing the return belt of the belt conveyor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a return belt can be made flat without strongly pressing the return belt, and the pressing force can be adjusted by utilizing the elasticity of a spring or rubber. It is an object of the present invention to provide a two-stage scraping belt cleaner for a belt conveyor which can scrape off even sticky deposits having relatively fine particles by the scraper.

[0006]

According to the present invention, in order to achieve the above object, a pair of scrapers are disposed on the belt surface of a belt conveyor before and after in a belt traveling direction, and a belt intermediate the pair of scrapers is provided. It is characterized in that a roller for receiving a belt is arranged on the back surface.

[0007] A pair of brackets are arranged on the left and right in the traveling direction of the belt of the belt conveyor, and two arms are pivotally mounted on the brackets, respectively. A plurality of cleaner plates are mounted to form a pair of scrapers, and a ring-shaped roller for receiving the belt on the back surface of the belt is mounted to the bracket.

Further, the ends of the two arms pivotally connected to the pair of brackets are connected by a threaded rod, and a spring and a nut are attached to the rod so that the distance between the ends of the arms can be adjusted. The pressing force of the pair of scrapers against the belt can be adjusted.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described. A belt cleaner for a belt conveyor has a pair of scrapers in contact with a front surface of a return belt of the belt conveyor, and a ring-shaped roller on the other back surface. After being attached to the belt conveyor so as to be in contact with each other, the distance between the tips of the two arms pivotally attached to the pair of brackets is adjusted by a nut to adjust the pressing force of the pair of scrapers against the belt. At that time, the entire belt conveyor belt cleaner is fixed to the machine frame of the belt conveyor or the like so as not to move with the belt.

When the belt conveyor is driven to convey excavated earth and sand, the return belt is in a flat state because a ring-shaped roller is interposed on the intermediate back surface of the pair of scrapers. Without being suppressed, the deposits are scraped by the first-stage scraper and scraped off by the second-stage scraper. Can be scraped off easily.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a belt cleaner for a belt conveyor according to the present invention will be described with reference to the drawings. FIG. 1 is a front view of this embodiment, FIG. 2 is a side view of this embodiment, and FIG. 3 is a front view of a cleaner plate.

In the figure, a pair of brackets 2 are arranged on the left and right in the traveling direction of the belt 1 of the belt conveyor P, and the bases of two arms 3 and 4 are respectively pivotally mounted on the brackets 2 by pins 5 and opposite thereto. The distal end portion is connected between the left and right arms 3 and 4, that is, the arm 3 is connected to the opposing arm 3, and the arm 4 is connected to the opposing arm 4 by a scraper support rod 6. The cleaner plate 7 is mounted and a pair of scrapers 8,
9 is formed. The cleaner plate 7 uses wear-resistant rubber. Reference numeral 7A denotes an abrasion-resistant chip provided on the cleaner plate 7, and ceramic, zirconia, resin, or the like is selectively used depending on the type of the conveyed object.

Further, the tips of two arms 3 and 4 pivotally connected to the pair of brackets 2 with pins 5 are connected by rods 11 with screws 10, and this rod 11 is connected to one arm 3. Is fixed via a flange 3 </ b> A, and is inserted into the other arm 4. Also,
A spring 12 or rubber and a nut 13 attached to a screw 10 of the rod 11 are mounted on the rod 11, and one end of the spring or rubber is fixed to the arm 4 via a flange 4A.

Therefore, the distance between the tips of the arms 3 and 4 can be adjusted by adjusting the nut 13, so that by adjusting the distance between the ends of the arms 3 and 4, a pair of scrapers 8, 9 can be formed.
The pressing force against the belt 1 can be adjusted. On the other hand, a ring-shaped roller 14 for receiving the belt 1 is mounted on the bracket 2 on the back surface of the belt 1 by a rotating shaft.

According to this embodiment, when the belt conveyor P is driven to convey excavated earth and sand, the return is performed because the ring-shaped roller 14 is interposed between the intermediate back surfaces of the pair of scrapers 8 and 9. The belt R is in a flat state, and the adhered material is scraped off by the first-stage scraper 8 and is scraped off by the second-stage scraper 9 without being strongly suppressed by the scrapers 8 and 9. The belt cleaner can easily scrape off even sticky deposits having relatively fine particles.

[0016]

According to the present invention described above, a pair of scrapers are arranged on the belt surface of the belt conveyor before and after in the belt advancing direction, and a roller for receiving the belt is provided on the belt back surface in the middle of the pair of scrapers. When the belt conveyor is driven to transport excavated earth and sand, etc., the return belt is always flat because the ring-shaped roller is interposed on the intermediate back surface of the pair of scrapers. The adhering substance can be scraped off with the first-stage scraper without being strongly suppressed, and can be reliably scraped off with the second-stage scraper. Even attached matter can be easily scraped off.

The ends of the two arms pivotally connected to the pair of brackets are connected by a threaded rod, and a spring and a nut are attached to the rod so that the distance between the ends of the arms can be adjusted. As a result, the pressing force of the pair of scrapers against the belt can be adjusted, so that the pressing force can be adjusted to the optimum pressing force by the conveyed material of the belt conveyor, and the wear of the belt and the scraper can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of the present embodiment.

FIG. 2 is a side view of the present embodiment.

FIG. 3 is a front view of the cleaner plate of the embodiment.

[Explanation of symbols]

 1 Belt 2 Bracket 3, 4 Arm 3A, 4A Flange 5 Pin 6 Scraper Supporting Rod 7 Cleaner Plate 7A Wear Resistant Tip 8, 9 Scraper 10 Screw 11 Rod 12 Spring 13 Nut 14 Roller P Belt Conveyor R Return Belt

Claims (3)

[Claims] 1. A pair of scrapers are arranged on the belt surface of a belt conveyor before and after in the belt advancing direction, and a roller for receiving the belt is arranged on the belt back surface in the middle of the pair of scrapers. Scraper belt cleaner. 2. A pair of brackets are arranged on the left and right sides in the traveling direction of the belt of the belt conveyor, and two arms are pivotally mounted on the brackets, respectively. A two-stage scraping belt cleaner, wherein a plurality of cleaner plates are mounted to form a pair of scrapers, and a ring-shaped roller for receiving a belt on the back surface of the belt is mounted on the bracket. 3. The distal ends of two arms each pivotally connected to a pair of brackets are connected by a threaded rod,
3. The rod according to claim 1, wherein a spring and a nut are mounted on the rod to adjust the interval between the ends of the arms so that the pressing force of the pair of scrapers against the belt can be adjusted. Two-stage scraping belt cleaner.