JP2008260628A - Belt cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem on a scraping type belt cleaner for removing deposits on a conveyor belt, which requires accurate management of belt contacting conditions and good-timing replacement, that the life is short due to wear and troublesome adjustment and replacement is required, and great man power is required for removing coulee deposits accumulated on the lower part of the conveyor belt. <P>SOLUTION: A rotating body consisting of a chain or the belt is arranged on the lower part on the homeward-passage side of the conveyor belt. A plurality of scraping plates are mounted on the rotating body in the rotating direction of the rotating body for scraping the deposits on the conveyor belt. The dropping deposits are received by a deposit receiving plate and carried and collected into a chute via the scraping plates mounted on the rotating body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a belt cleaning device that removes belt deposits on a belt conveyor, extends a scraping plate replacement cycle, reduces complicated scraping plate positioning adjustment and replacement work, and after scraping, the lower part of the cleaner and the surrounding area. The present invention relates to a belt cleaning device having a function of cleaning / collecting deposits falling on the belt.

In a thermal power plant, a steel mill, a chemical plant, a sewage treatment plant, a garbage disposal plant, and the like, a belt conveyor that conveys various raw materials, fuels, treated materials, wastes, and the like is used. In this belt conveyor, a belt having a predetermined width is wound around an endless (endless shape) between a driving pulley and a driven pulley, and the driving pulley is rotated to rotate the belt. When transporting the transported object on the belt conveyor, the belt reverses on the head pulley side, and when the transported object is transported to the backward movement side while adhering to the belt, the adhered object falls over the entire length of the belt conveyor, Accumulate under the belt conveyor. The deposits under the belt conveyor need to be cleaned regularly, and when they are left standing, they gradually grow, eventually reach the rollers and belts, and come into contact with the rollers and belts to wear them. Further, the belt non-attachment has the effect of abrading the roller on the return path side, and has a problem that the life of the roller on the return path side is short as compared with the roller on the forward path side. Therefore, various types of cleaners have been proposed in the method of scraping non-adhering objects by pressing the cleaner against the belt surface on the return path side.

(1) A plurality of leaf springs including a scraper blade and an elastic body that urges the blade against the belt surface, the elastic body having at least one spring element, and the spring elements are superposed on each other. Has been proposed. (See Patent Document 1).
(2) A rotating blade body is provided below the head pulley of the belt conveyor, and the rotating blade is rotated by the rotation force of the pulley, and a plurality of rotating shafts arranged at substantially equal intervals along the rotation direction on the rotating shaft. There has been proposed a cleaner device that is formed such that the leading edge of each blade piece is in contact with the surface of the conveyor belt against the moving direction of the conveyor belt by the rotation of the rotary blade body. (See Patent Document 2).
(3) In an in-chute cleaning device in which a belt cleaner and a snap pulley are pressed toward a conveyor belt, and a back plate inclined toward a lower opening is disposed below the belt cleaner, a pair of endless chains There has been proposed a cleaning device that attaches a plurality of scrapers and cleans a back plate that receives non-attached materials scraped off by a belt cleaner. (See Patent Document 3).

JP 2002-46851 A Registered utility model 3012904 public information Registered utility model No. 3050799

In the method of Patent Document 1, since the blade is fixed and the same surface is always pressed against the belt, it is easy to wear, and the scraping performance of the belt non-adherent is reduced. Therefore, complicated adjustment and replacement in a short cycle are required. Had to be forced.

In the method of Patent Document 2, a plurality of scrapers are provided, and it is estimated that the lifetime is longer than that of a single scraper. (1) Timing when the rotating blades are not in contact with the belt or the belt Since there is a weak timing of contact with the belt, there was unevenness in the removal of non-attached materials. (2) Since the rotating blades impacted the belt impactively, a large amount of friction occurred and the life of the scraper could not be extended. It was.

In the method of Patent Document 3, (1) the belt cleaner and the means for collecting the deposits are independent of each other, requiring a large space for installation on the site, (2) for the installation cost of the equipment and the subsequent maintenance (3) The belt life of the belt cleaner was short and complicated replacement and adjustment were required.

The present invention solves the above-mentioned problems of the conventional cleaning device, and (1) extends the adjustment and replacement cycle of the scraping plate so that the belt non-adherence can be reliably removed over a long period of time. ) Make the equipment compact and secure the installation space by enabling scraping and cleaning / recovery of the deposit with the same equipment. (3) Receive the deposit with a non-stick receiving plate and transport it into the chute. This makes it possible to automate the cleaning and recovery of non-attached items.

According to a first aspect of the present invention, as shown in claim 1, in the method of scraping the deposits on the conveyor belt with a scraping plate provided on the return path side of the conveyor belt, at least two or more are provided below the return path side of the conveyor belt. A rotating body is disposed in the longitudinal direction of the conveyor belt, an endless coupling body is rotatably disposed on the rotating body, and a plurality of scrapers are disposed on the coupling body in the rotation direction of the coupling body, The scraping plate is brought into sliding contact with the lower surface of the return side of the conveyor belt to scrape the non-adhered material on the conveyor belt.

The second solving means is a belt cleaning device as shown in claim 2, wherein the rotating body is a sprocket and the connecting body is a chain of one or two or more.

The third solving means is a belt cleaning device in which the rotating body is a pulley and the coupling body is a belt, as shown in claim 3.

According to a fourth aspect of the present invention, as shown in claim 4, in the plurality of scrapers attached to the coupling body, scrapers for scraping the periphery of the central portion and the periphery of both sides separately in the width direction of the conveyor belt. Is a belt cleaning device arranged alternately.

A fifth solving means is a belt cleaning device in which a braking device is provided on a shaft of a rotating body as shown in claim 5.

A sixth solution is a belt cleaning device in which a speed reducer and a motor are provided on a shaft of a rotating body as shown in claim 6.

As a seventh solution, as shown in claim 7, a power take-out roller is pressed to the return path side of the conveyor belt, the roller and the rotating body are connected by a power transmission mechanism, and the power transmission mechanism is decelerated. A belt cleaning device equipped with a machine.

According to an eighth means for solving the problem, as shown in claim 8, in the method of scraping the deposits on the conveyor belt with a scraper provided on the return path side of the conveyor belt, at least two or more rotations are provided below the return path side of the belt. The body is disposed in the longitudinal direction of the conveyor belt, an endless coupling body is rotatably disposed on the rotating body, and a plurality of scrapers are disposed on the coupling body in the rotational direction of the coupling body, The scraper is brought into sliding contact with the lower surface on the return path side of the conveyor belt, and a non-adhering material receiving plate and a guide rotator in the vicinity of the tip of the non-adhering material receiving plate are disposed at the lower portion on the return path side of the coupling body. In the belt cleaning device, the scraper of the coupling body slides on the upper surface of the kimono receiving plate.

The effects of the first solution are as follows: (1) Since the scrapers are provided on the endless connecting body, if the scrapers are worn, the other scrapers are slid to the belt return path side by rotating the rotating body. The scraping ability can be easily recovered because it can be brought into dynamic contact. (2) The scraper that is in sliding contact with the conveyor belt moves sequentially by rotating the coupling body at a specific speed. As the number of plates increases, the amount of wear of the scraper per sheet can be reduced, and the scraper adjustment and replacement cycle can be extended. (3) A plurality of scrapers can be simultaneously brought into sliding contact with the belt return path side. Therefore, scraping performance is improved.

The effects of the second solution are (1) Since the scraper is attached to the chain, the attachment strength of the scraper can be increased, and (2) accumulation of non-adhering material around the scraper can be reduced.

The effects of the third solution are as follows: (1) Since the scraper is attached to the belt, the scraper flexibly comes into contact with the conveyor belt due to the elasticity of the cleaner belt and can be uniformly scraped. (2) The scraper is scraped off. The non-attachment is captured by the cleaner belt and falls on the return path side, so that the non-attachment does not accumulate around the scraper.

The effect of the fourth solution means that the scraper plate and the conveyor belt are easily contacted uniformly by dividing the scraper plate into the central part of the conveyor belt and both sides, and the cleaning effect of the deposits is improved.

The effect of the fifth solution is that when the traveling direction of the return path of the conveyor belt and the rotation direction of the scraper are the same, the power for rotating the scraper uses the sliding contact friction force between the scraper and the conveyor belt. It is possible to adjust the rotation speed of the scraper according to the removal of the deposits by providing a braking device.

The effects of the sixth means are as follows: (1) Since the rotating device is provided with a drive device, the speed of the scraper can be set so that the cleaning force of the scraper can be optimally exhibited relative to the speed of the conveyor belt. (2) Since the rotation direction of the scraping plate can be set in the direction opposite to the return path side direction of the conveyor belt, the cleaning power is improved.

The effects of the seventh solving means are as follows: (1) Since the driving force of the rotating body is taken out from the return path side with respect to the belt conveyor, no electrical equipment is required and the equipment cost is reduced. (2) Since the rotation direction of the scraping plate can be set in the direction opposite to the return path side direction of the conveyor belt, the cleaning power is improved.

The effect of the eighth solving means is that the scraped deposit is received by the deposit receiving plate, and the deposit on the deposit receiving plate can be cleaned by the scraper on the return path side, so that the deposit is deposited in a predetermined place. It is possible to prevent the scraped deposits from being scattered around.

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

FIG. 1 is a side view when cleaning and recovery are integrated. FIG. 2 is a side view of the cleaning device when the coupling body is a chain. FIG. 3 is a side view of the cleaning device when the coupling body is a belt. FIG. 4 is a longitudinal sectional view in the case where the coupling body is a chain. FIG. 5 is a cross-sectional view in the width direction when the coupling body is a chain. FIG. 6 is a plan view in the case where the connecting body is a chain and the chain has one line. FIG. 7 is a plan view in the case where the connecting body is a chain and the chain has two strips. FIG. 8 is a cross-sectional view in the longitudinal direction when the coupling body is a belt. FIG. 9 is a cross-sectional view in the width direction when the coupling body is a belt. FIG. 10 is a plan view in the case where the connecting body is a belt and a braking device is provided. FIG. 11 is a plan view in the case where the connecting body is a belt and the driving device is arranged. FIG. 12 is a plan view when the connecting body is a belt and the driving force is transmitted from the conveyor belt.

2 and 3, in the method of scraping the deposits on the conveyor belt 10 with a scraping plate 20 provided on the return path side of the conveyor belt 10, at least 2 is provided below the return path side of the conveyor belt 10. One or more rotating bodies 30 are arranged in the longitudinal direction of the conveyor belt 10, an endless connecting body 40 is rotatably arranged on the rotating body 30, and a plurality of scraping plates 20 are connected to the connecting body 40. A belt cleaning device, wherein the belt cleaning device is disposed in the rotational direction of the body 40 and the scraping plate 20 is brought into sliding contact with the lower surface of the return side of the conveyor belt 10 to scrape non-adhering material on the conveyor belt 10. Device 50.

The mounting position of the cleaning device 50 is preferably as close as possible to the head pulley 11 and is preferably immediately after the snap pulley 12 in terms of the mounting space. As the material of the scraper plate 20, rubber, ceramics, cemented carbide, a metal plate subjected to wear resistance treatment, or the like can be used. Further, the scraper plate 20 may be attached integrally with the width direction of the conveyor belt 10 or may be attached in a divided manner. Since the plurality of scraping plates 20 can be brought into sliding contact with the conveyor belt 10 at the same time, good cleaning performance can be exhibited regardless of the nature and amount of deposits. When the scraping plate 20 that is in sliding contact with the conveyor belt 10 is worn out and the cleaning performance is deteriorated, the scraping plate 20 is moved by rotating the rotating body 40, whereby the new scraping plate 20 is brought into sliding contact with the conveyor belt 10. As a result, the cleaning performance can be easily recovered.

As shown in FIGS. 3, 4, 5, 6, and 7, the second solution is that the rotating body 30 is a sprocket 31, and the connecting body 40 is a chain 41 having one or two or more threads. A belt cleaning device 50 is provided. FIG. 6 shows an example in which the chain 41 has one line. FIG. 7 shows an example in which the chain 41 has two lines. A cleaning device 50 using three or more chains 41 can be manufactured by using the single chain 41 in FIG. 6 on the inner side and the two chains 41 in FIG. 7 on both sides.

FIG. 4 shows an example of attaching the scraper 20. A bracket 41b is attached to the plate 41a of the chain 41, and a frame 41c is attached to the bracket 41b. The scraper 20 is attached to the frame 41c. The bracket 41b may be attached to the plate 41a or the frame 41c may be attached to the bracket by welding or bolt 60. Since the scraper plate 20 is a consumable part that wears in sliding contact with the conveyor belt 10, it is desirable to fix the scraper plate 20 with bolts 60 in order to facilitate replacement. Since the amount of non-adhering material gradually decreases from the center of the conveyor belt to both sides, it is better to make the width of the scraper plate 20 shorter than the entire width of the conveyor belt 10 as shown in FIG.

As shown in FIGS. 3, 8, and 9, the third solving means is a belt cleaning device 50 in which the rotating body 30 is a pulley 32 and the connecting body 40 is a belt 42.

The belt 42 may be any belt that is normally used in the conveyor belt 10. As shown in FIGS. 8 and 9, the plate 42 a is fixed to the belt 42 in order to attach the scraper plate 20. The plate 42a may have a structure in which a rubber plate is bonded to the belt 42, or may be formed integrally with the belt 42. Moreover, you may attach a metal plate with the volt | bolt 60 etc. FIG.

As shown in FIG. 7, the fourth solving means is that a plurality of scrapers 20 attached to the coupling body 40 (41), both scrapers 21 that scrape the periphery of the central portion with respect to the width direction of the conveyor belt 10 and the scrapers 21. This is a belt cleaning device 50 in which scraping plates 22 that scrape the periphery of the side are alternately arranged.

The conveyor belt 10 has a difference in wear amount in the central portion and the peripheral portions on both sides with respect to the width direction, and the central portion has a shape in which the progress of wear is recessed faster. For this reason, if the scraper plate 20 is integrated, a difference in the contact state between the conveyor belt 10 and the scraper plate 20 gradually occurs between the central portion and the peripheral portion, and the non-sticking material at the central portion cannot be removed. Therefore, the central portion of the conveyor belt 10 and the scraper plate 20 that cleans both sides are separated, and the scraper plate 21 that specially scrapes the central portion and the scraper plate 22 that specially scrapes the peripheral portion are alternately arranged. As a result, good cleaning performance can be maintained for a long time.

As shown in FIG. 10, the fifth solving means is a belt cleaning device 50 in which a braking device 90 is provided on the shaft 32a of the rotating body 30 (32).

In the case of FIGS. 1 and 2, due to the friction between the conveyor belt 10 and the scraper plate 20, a force that moves the scraper plate 20 in the traveling direction of the conveyor belt 10 acts. In the case where the scraper plate 20 is fixed and cleaned, the braking device 90 disposed on the rotating body 30 may be braked. When the scraper 20 is moved at a required speed, the braking force of the braking device 90 may be adjusted as necessary.

As shown in FIG. 11, the sixth solution is a belt cleaning device 50 in which a reduction gear 100 and a motor 110 are provided on the shaft of the rotating body 30. The motor 110 may have a constant rotation speed and rotation direction, but in order to obtain a good cleaning performance according to the type and amount of the adhered portion, it is desirable that the rotation speed and rotation direction be a structure and control method that can be changed. . The speed of the scraping plate 20 may be set to 0 m / min to 10.0 m / min. Desirably, it is 0.1 m / min to 2.0 m / min. If the scraper plate 20 is moved at 10.0 m / min or more in the same direction as the conveyor belt 10, the cleaning performance is deteriorated. When moved in the reverse direction at 10.0 m / min or more, the resistance received by the scraping plate 20 increases, wear of the scraping plate 20 and the conveyor belt 10 increases, and the service life decreases.

As shown in FIG. 12, the seventh solution means presses the power take-out roller 120 to the return path side of the conveyor belt 10, and connects the roller 120 and the rotating body 30 (32) by the power transmission mechanism 130. This is a belt cleaning device in which the power transmission mechanism 130 includes the speed reducer 100.

For example, as shown in FIG. 12, the power transmission mechanism has a V pulley 131 connected to the shaft 121 of the roller 120 and a V pulley 133 connected to the speed reducer 100, and is wound around a V belt 132. Sprockets can be used instead of the V pulleys 131 and 133, and chains can be used instead of the V belt 132. In addition, there is no particular limitation as long as the power can be transmitted from the roller 120 to the speed reducer 100.

As shown in FIG. 1, the eighth solving means is a method of scraping deposits on the conveyor belt 10 with a scraper plate 20 provided on the return path side of the conveyor belt 10. The above rotating body 30 is disposed in the longitudinal direction of the conveyor belt 10, an endless connecting body 40 is rotatably disposed on the rotating body 30, and a plurality of scrapers 20 are connected to the connecting body 40. The scraper plate 20 is slidably brought into contact with the lower surface on the return path side of the conveyor belt 10, and the non-attachment receiving plate 70 and the non-attachment receiving plate 70 are arranged on the lower portion of the connecting body 40 on the return path side. A belt cleaning device 50 in which an auxiliary rotating body 80 is disposed in the vicinity of the tip of the non-attached material receiving plate 70 so that the scraping plate 40 of the connecting body 40 slides on the upper surface of the non-attached material receiving plate 70.

FIG. 1 shows an example in which the connecting body 40 is a chain 41 and the rotating body 30 is a sprocket 31, but the same function can be achieved with a configuration in which the connecting body 40 is a belt 42 and the rotating body is a pulley 32. Have By extending the non-attachment receiving plate 70 to the chute 13 and disposing the auxiliary rotating body 80 in the chute 13, the scraped non-attachment can be automatically cleaned and collected in the chute. Since the non-sticking material received by the non-sticking material receiving plate 70 is conveyed by the scraping plate 20, the moving direction of the scraping plate 20 is the same direction as the return path side of the conveyor belt 10. The speed of the scraping plate 20 may be set to 0.1 m / min to 10.0 m / min. Desirably, it is 0.3 m / min to 2.0 m / min. When the scraper plate 20 is moved at 10.0 m / min or more, the cleaning performance deteriorates.

FIG. 5 is a side view when cleaning and recovery are integrated. These are side views in case a connection body is a chain. These are side views in case a coupling body is a belt. These are longitudinal cross-sectional views in case a coupling body is a chain. These are width direction sectional views in case a connection body is a chain. FIG. 4 is a plan view in the case where the connecting body is a chain and the chain is one line. FIG. 5 is a plan view in the case where the connecting body is a chain and the chain is two strips. These are sectional drawings of the longitudinal direction in case a coupling body is a belt. FIG. 6 is a cross-sectional view in the width direction when the coupling body is a belt. FIG. 5 is a plan view of a case where a brake is provided in a belt cleaning device of a coupling body. FIG. 6 is a plan view when the driving device is disposed in the belt cleaning device of the coupling body. FIG. 5 is a plan view when the connecting body transmits driving force from the conveyor belt to the belt cleaning device.

Explanation of symbols

10: conveyor belt, 11: head pulley, 12: snap pulley, 13: chute, 20: scraper, 21: central scraper, 22: peripheral scraper, 30: rotating body, 31: sprocket, 32: pulley , 40: coupling body, 41: chain, 41a: plate, 41b: bracket, 41c: frame, 42: belt, 42a: plate, 50: cleaning device, 60: bolt, 70: non-attachment receiving plate, 80: auxiliary rotation Body: 90: Braking device, 100: Reducer, 110: Motor, 120: Roller, 130: Power transmission mechanism, 131: V pulley, 132: V belt, 133: V pulley

Claims (8)

In the method of scraping the deposits on the conveyor belt with a scraper provided on the return path side of the conveyor belt, at least two or more rotating bodies are disposed in the longitudinal direction of the conveyor belt below the return path side of the conveyor belt, An endless coupling body is rotatably disposed on the rotating body, and a plurality of scrapers are disposed on the coupling body in a rotating direction of the coupling body, and the scraping plates are slid on the lower surface on the return path side of the conveyor belt. A belt cleaning apparatus, wherein the belt belt is brought into contact with the non-sticking material of the conveyor belt. 2. The belt cleaning device according to claim 1, wherein the rotating body is a sprocket, and the connecting body is a chain of one or two or more strands. The belt cleaning apparatus according to claim 1, wherein the rotating body is a pulley and the coupling body is a belt. In the plurality of scrapers attached to the coupling body, in the plurality of scrapers attached to the coupling body, a scraping board for scraping the periphery of the central portion in the width direction of the conveyor belt and a scraping board for scraping the periphery of both sides are alternately arranged. 4. The belt cleaning device according to claim 1, wherein the belt cleaning device is provided. 4. The belt cleaning device according to claim 1, wherein a braking device is provided on a shaft of the rotating body. 5. The belt cleaning device according to claim 1, wherein a reduction gear and a motor are provided on the shaft of the rotating body. The power take-off roller is pressed against the return path side of the conveyor belt, the roller and the rotating body are connected by a power transmission mechanism, and the power transmission mechanism includes a speed reducer. The belt cleaning device according to claim 2 or claim 3 or claim 4. In the method of scraping the deposits on the conveyor belt with a scraper provided on the return path side of the conveyor belt, at least two or more rotating bodies are arranged in the longitudinal direction of the conveyor belt below the return path side of the belt, and the rotation An endless coupling body is rotatably arranged on the body, and a plurality of scrapers are disposed on the coupling body in the rotation direction of the coupling body, and the scraping plates are brought into sliding contact with the lower surface on the return path side of the conveyor belt. In addition, a non-attached material receiving plate and an auxiliary rotating body are provided near the tip of the non-attached material receiving plate at the lower part on the return path side of the connecting body, and the scraper of the connecting body slides on the upper surface of the non-attached material receiving plate. The belt cleaning device according to claim 1, claim 2, claim 3, claim 4, claim 5, claim 6, or claim 7.

Images