JP2000335731A - Belt cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly push scraping plates for a belt cleaner against a belt in its cross direction for removing deposits all over, facilitate the adjustment of the pushing force of the scraping plates, eliminate the need for short-time adjustment and maintain an optimum scraping condition for a long time. SOLUTION: A plurality of frames 1 onto which a weight 2 or an elastic body is applied to one sides and scraping plates 3 are mounted on the other sides are put on a shaft 5 placed in the cross direction of a belt 4. The adjacent scraping plates 3 are arranged with their positions shifted to the longitudinal direction of the belt 4 and the widths overlapped with each other. The frames 1 are made rocking about the shaft 5 and the scraping plates 3 are pushed against the belt 4 by the weight of the weight 2 or the tension of the elastic body for removing deposits on the belt 4.

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 removing deposits on a belt conveyor.

[0002]

BACKGROUND OF THE INVENTION Belt conveyors are suitable for efficiently transporting large amounts of raw materials and are used in all industrial fields such as cement, chemical, steel, civil engineering and the like. The biggest problem with belt conveyor transport is that raw materials adhere to the belt surface. These contaminants fall off the belt and accumulate under the belt when the belt reverses and returns from the head pulley to the tail pulley after transporting the conveyed material on the belt. In addition, since the accumulation of deposits occurs over the entire length of the belt, cleaning under the belt is a great effort. Also, valuable resources are wasted. For this reason, a large number of methods for efficiently cleaning and collecting the attached matter by removing the attached matter on the belt as close to the head pulley as possible and collectively at one place have been practically used, and the effect has been improved. In Japanese Utility Model Application Publication No. 53-94650, a method has been proposed in which a plurality of scraping plates are pressed against a belt with a weight to scrape off attached matter. In this method, since a plurality of scraping plates are pressed by one weight, the pressing force of the scraping plate becomes uneven, and uniform cleaning is difficult.
Japanese Utility Model Application Publication No. 54-116532 proposes a method in which one scraping plate is pressed against the belt with respect to the entire width of the belt using a weight. According to this method, the entire width of the belt is cleaned with one scraping plate, but due to uneven wear of the scraping plate or deformation of the belt, the scraping plate is pressed uniformly over the entire width of the belt. It was impossible to attach and could not be completely cleaned. Further, since the base of the scraping plate is directly below the scraping plate, the scraped-off deposits accumulate on the base. If this deposit is left as it is, there is a problem that the belt is rubbed and worn. Japanese Patent Application No. 6-16
No. 9383 has proposed a method of pressing a scraper against a belt using an elastic body. In this method, the belt is pressed by the scraping plate from the direction opposite to the traveling direction of the belt, so if there is a dent scratch or strong attachment on the belt, a force to buckle the scraping plate works, and the belt is pressed. There were problems such as damage and the scraper itself being damaged. Further, it is difficult to adjust the pressing force and quantitatively grasp the pressing force. There has been a problem that excessive belt pressing hasten the wear of the belt, while weak pressing cannot remove attached matter.

[0003]

As described above, the current belt cleaner has the following problems. 1) A method of pressing a scraper against a belt using a weight or an elastic body has been proposed. However, since only one scraper is used in the width direction, the belt is bent and unevenness of the scraper is reduced. Unable to keep up and cleaning remains. 2) Since the base of the scraping plate is directly below the scraping plate, the scraped off deposits accumulate on the base, and if left unattended, the deposits will rub against the belt and wear. 3) It was difficult to adjust the pressing force of the scraper, and the number of adjustments in a short cycle was large, making it difficult to maintain an optimal state. The present invention is to solve the above problems,
It is to solve the following problems. 1) The scraping plate is pressed uniformly in the width direction of the belt to remove the deposits evenly. 2)
Prevent the scraped deposits from accumulating on the belt cleaner. 3) The adjustment of the pressing force of the scraping plate is facilitated, the adjustment in a short cycle is unnecessary, and the optimum state is maintained for a long period of time.

[0004]

According to a first aspect of the present invention, there is provided a belt cleaner structure comprising a plurality of frames each having a weight or an elastic body attached to one side and a scraper attached to the other side. Put on the axis placed in the width direction of, and shift the position of the adjacent scraping plate in the length direction of the belt, and arranged so that the widths of the adjacent scraping plates overlap each other, The frame is made swingable about the shaft, and the scraper is pressed against the belt by the weight of the weight or the tension of the elastic body, thereby removing the belt attached matter.

[0005]

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

FIG. 1 is a side sectional view of a belt cleaner mounting structure.

FIG. 2 is a plan view of a belt cleaner mounting structure.
A weight 2 is attached to one side of the frame 1, and a scraping plate 3 is attached to the other side. The plurality of frames 1 configured as described above are placed on the shaft 5 placed in the width direction of the belt 4, and the positions of the adjacent scraping plates 3a and 3b
S dimension shifts in the length direction of and the adjacent scraping plates 3a
And the width W of the scraping plate 3b are arranged so as to overlap each other by the G dimension. The scraper 3 is pressed against the belt by the weight of the weight 2 so that the frame 1 can swing about the shaft 5. The bearing 10 of the frame 1 may be cylindrical, but is preferably half-split. When exchanging the frame 1 alone, only the frame 1 can be exchanged. The scraper 3 is pressed against the belt 4 by the weight of the weight 2 to remove the deposit on the belt. As the material of the scraping plate 3, ceramics such as alumina, silicon nitride, silicon carbide, zirconia, and sialon and carbide are suitable. The width of the scraping plate 3 is preferably 10 to 200 mm. If it is smaller than 10 mm, the space between the frames 1 becomes narrow, and the deposits are deposited on the frame 1. If it is larger than 100 mm, the ability to follow the deformation and unevenness of the belt will be poor, and the scraping effect will be reduced. Desirably, it is 20 to 60 mm. It is better to slightly chamfer both ends of the scraping plate 3. The belt 4 is prevented from being damaged at the corners at both ends. Further, when the belt 4 meanders, the belt 4 can get over the scraping plate 3 and return smoothly. The scraper 3 is pressed against the belt by the weight of the weight 2 or the tension of an elastic body (not shown).
The pressing force of the scraping plate 3 is preferably 1 to 20 kg per 100 mm. If it is smaller than 1 kg, the scraping effect is reduced. 2
If it is larger than 0 kg, wear of the belt is accelerated, and the life of the belt is shortened. Desirably, the weight is 9 to 11 kg. The appropriate pressing force of the scraping plate 3 varies depending on the type and amount of the adhered substance, the adhesive force, the properties of the belt surface, and the like, and is selected based on experience and intuition at the site, and cannot set a right range. The number of frames is determined by the width of the belt 4 and the width of the scraper 3. For example, in the case of a belt having a width of 1200 mm, if the scraping range is 1000 mm, the width of the scraping plate 3 is 50 mm.
In the case of mm, it becomes 20 pieces. Usually 100 from the end of the belt
Since there is almost no deposit in the range of about mm, 1000
It is enough to scrape off the range of about mm. The scraping plate 3 is fixed to a supporting plate 6 integrally formed with the frame 1 by a method such as a bolt adhesive or fitting. The frame 1 is preferably prevented from rising more than the R dimension by hitting the stopper 7. This is to prevent the belt from riding on the scraper 3 when the belt meanders. Since deposits tend to accumulate on the shaft 5, it is preferable to install a cover 8 to prevent accumulation. The shaft 5 may be directly attached to the conveyor frame 9 or may be attached to the conveyor frame 9 via a bracket (not shown). F indicates the traveling direction of the belt.

[0006]

The scraper 3 can be pressed against the belt 4 by the weight 2 with an appropriate force. By adjusting the weight of the weight 2, the scraping force can be easily adjusted.
Since the scraping plate 3 is always pressed against the belt 4 by the weight 2, the pressing force always keeps an appropriate value even if the scraping plate 3 is worn. By arranging the scrapers 3 alternately, the scrapers 3 can be overlapped in the width direction of the belt 4, so that scraping unevenness is eliminated. Stopper 7
, The scraper 3 is restricted so as not to protrude above the lower surface of the belt 4. If the belt 4 meanders, the belt 4 hits the end face of the scraper 3 when the belt 4 returns to its original position, and the belt 4 To prevent returning to Also, when the belt is removed at the time of belt replacement, the weight of the weight rotates the frame so that the frame does not fall off the shaft.
When the belt 4 meanders and tries to return to the original position by chamfering both ends of the scraping plate 3, even if the scraping plate 3 hits the end face,
And get back on. Since the guide is halved, when the scraper 3 is worn or damaged, the frame 1
Easy to remove by itself.

[0007]

The following effects can be obtained by configuring the belt cleaner as described above. 1) The scraping plate can be uniformly pressed in the width direction of the belt to remove the attached substances evenly. 2) It is possible to prevent deposits scraped off by the belt cleaner from accumulating on the belt cleaner frame or the like. 3) The adjustment of the pressing force of the scraping plate is facilitated, and the adjustment in a short cycle is unnecessary, so that the optimum state can be maintained for a long period of time. 4) When replacing the scraper, the scraper alone can be replaced, and replacement with the frame can be easily performed.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a belt cleaner mounting structure.

FIG. 2 is a plan view of a belt cleaner mounting structure.

[Explanation of symbols]

Reference Signs List 1 Frame F Belt traveling direction 2 Weight 3 Scraper 3a Scraper 3b Scraper 4 Belt 5 Shaft 6 Support plate 7 Stopper 8 Adhesion prevention plate 9 Conveyor frame 10 Bearing S Scratch plate interval W Scratch plate width G Scratch plate overlap Dimension R Raised dimension of scraper

Claims (1)

[Claims] 1. A plurality of frames each having a weight or an elastic body attached to one side and a scraping plate attached to the other side are mounted on a shaft placed in the width direction of the belt, and the positions of adjacent scraping plates are determined. It is displaced in the length direction of the belt and arranged so that the widths of the adjacent scraping plates overlap each other, the frame can swing about the shaft, and the weight or elastic body of the weight is provided. A belt cleaner that presses the scraping plate against the belt with the tension of the belt to remove extraneous matter on the belt.