JP6221377B2 - Contaminant removing apparatus and deposit removing method for conveyor belt - Google Patents

Description

  The present invention relates to a deposit removing device and a deposit removing method for a conveyor belt used for removing deposits on a belt of a belt conveyor.

  In order to remove the deposits on the belt of the belt conveyor, conventionally, a deposit removing device called a belt cleaner has been used. This deposit removal device for a conveyor belt is a device that removes deposits by pressing a scraper against the conveyor belt. The installation position of the scraper is roughly divided into a front surface of the head pulley of the belt conveyor, a return belt portion behind the head pulley, and directly below the head pulley.

  Patent Document 1 and Patent Document 2 describe a conveyor belt deposit removing device in which a scraper is installed in front of a head pulley. However, such a structure in which the scraper is arranged in front of the head pulley is in contact with the conveyed product directly in contact with the scraper, so that foreign matter is likely to be caught, and the scraper body is quickly worn out. there were.

  Patent Documents 3 to 8 describe a deposit removal device for a conveyor belt in which a creper is installed on a return belt portion behind a head pulley. However, such a structure has a problem that it is difficult to install a transfer chute to a downstream transport device, and there is a problem that the maintainability of the scraper is difficult.

  Further, Patent Document 9 describes a conveyor belt deposit removing device in which a creper is installed directly under a head pulley. However, the conveyor belt deposit removing device described in Patent Document 9 has a structure in which the belt scraper is pressed by hydraulic pressure or air pressure, so that the structure is complicated and the maintainability of the scraper is difficult.

JP-A-11-035136 JP 2000-211731 A Japanese Utility Model Publication No. 50-087791 JP 60-106710 A Japanese Utility Model Publication No. 63-020646 Japanese Patent No. 3206790 Japanese Patent Laid-Open No. 08-026459 Japanese Patent Laid-Open No. 08-208020 JP 2001-010716 A

  Therefore, the object of the present invention is to solve the above-mentioned conventional problems, the structure is simple, and it is easy to install a transfer chute to the downstream transport device. An object of the present invention is to provide a deposit removing device and a deposit removing method for a conveyor belt that prevent the foreign matter from being caught and prevent the scraper body from being worn as a contact without contact.

In order to solve the above-described problems, the conveyor belt deposit removing apparatus of the present invention has a lower base and an upper bracket connected to a mounting base provided at a position below the head pulley of the conveyor belt by a hinge structure. A pair of left and right holders that are fixed by bolts with a horizontal shaft sandwiched between the lower metal fitting and the upper metal fitting are provided, and the scraper body is attached to the upper mounting bracket of the horizontal shaft that is held between these holders. It is possible to fix the scraper body at a position facing the center of the rotation axis of the head pulley by tightening the bolt and tightening the bolt. By loosening the bolt, the scraper body can be fixed to the return side of the conveyor belt. It is characterized by being rotatable.

  Note that the scraper body may be provided with a cemented carbide tip at the tip.

  The conveyor belt deposit removing method according to the present invention is a conveyor belt deposit removing method using the conveyor belt deposit removing apparatus described above, wherein the scraper body is fixed at a position to be removed directly under the head pulley. Thus, deposits on the conveyor belt are removed, bolts are loosened, the scraper body is tilted to the return side of the conveyor belt, and maintenance of the scraper body is performed.

The apparatus for removing deposits on a conveyor belt according to the present invention enables the scraper body to be fixed at a position where the deposits on the conveyor belt are removed directly below the head pulley, and the scraper body is moved to the return side of the conveyor belt by loosening a bolt. Since it can be rotated, the following effects can be obtained.
1. Easy to install a transfer chute to the downstream transport device.
2. The maintainability of the scraper can also be improved.
3. Since the transported object is not in direct contact, it is difficult for foreign matter to be caught and the scraper main body is less worn.
4. Since the structure was simplified, the cause of damage could be reduced.

It is a whole front view of the belt conveyor provided with the deposit removal apparatus of the conveyor belt of this invention. It is a front view of the deposit removal apparatus of the conveyor belt of an embodiment. It is a side view of the deposit removal apparatus of the conveyor belt of embodiment. It is a front view of the deposit removal apparatus of the conveyor belt of an operation state. It is a front view of the deposit removal apparatus of the conveyor belt at the time of a maintenance.

Embodiments of the present invention will be described below.
FIG. 1 is an overall front view of a belt conveyor 1 having a conveyor belt deposit removing device according to the present invention. The belt conveyor 1 is composed of a fixed head pulley 2 and a conveyor belt 5 without an end stretched between a tail pulley 4 that is moved laterally by a take-up unit 3. By rotating the head pulley 2 with a reduction motor (not shown), the conveying side 6 of the conveyor belt 5 moves to the conveying direction side (right side in FIG. 1), and the return side 7 on the lower surface moves to the left side in FIG. By this movement of the conveyor belt 5, a transported object (not shown) is transported from the hopper 8 to the chute 9. A load on the conveying side 6 of the conveyor belt 5 is received by the carrier roller 10, and a return roller 11 is provided to prevent the return side 7 from drooping.

  When transporting a transported object having high adhesion, the transported belt cannot be avoided from adhering to the conveyor belt 5 after the transported object is thrown from the chute 9 into a post process (not shown). Due to the contact with the return roller 11, the deposit falls and accumulates from the return side 7 of the conveyor belt 5.

  Therefore, in the present invention, a deposit removing device for the conveyor belt 5 is provided immediately below the head pulley 2 to scrape deposits (not shown) from the conveyor belt 5 and collect them through a chute 9 to a subsequent process (not shown). Yes. A split type upper chute 24 is attached to the upper part of the return side of the chute 9. The upper chute 24 can be removed during maintenance.

Next, the structure of the conveyor belt deposit removing apparatus according to the embodiment will be described with reference to FIGS.
As shown in the figure, mounting bases 12 extending in the vertical direction are provided on the left and right outer surfaces of the chute 9 below the head pulley 2, and holding tools 18 are supported at intermediate positions of the mounting bases 12. ing.

  The holding tool 18 is composed of a lower metal fitting having an L-shaped cross section that can hold the horizontal shaft 17 and an upper metal fitting that presses and fixes the upper surface of the horizontal shaft 17. Are connected by a hinge structure 23. The upper metal fitting is attached to the lower metal fitting by one bolt 15. For this reason, the horizontal shaft 17 can be fixed at both side positions by tightening the bolt 15, and if the bolt 15 is loosened, the horizontal shaft 17 can be rotated.

  As shown in FIGS. 2 and 3, a mounting bracket 16 extending in the width direction of the head pulley 2 is attached to the upper portion of the horizontal shaft 17, and a scraper body 19 is attached to the upper side of the mounting bracket 16 with rubber. It is attached via an elastic body 20. The tip of the scraper body 19 comes into contact with the surface of the conveyor belt 5 at a position just below the head pulley 2 and scrapes off deposits. As a countermeasure against wear, it is preferable to use a scraper body 19 with a cemented carbide tip attached to the tip 21 thereof.

Next, the operation of the scraper body 19 during operation will be described with reference to FIG.
In order to apply the scraper body 19 to the surface of the head pulley 2 at a right angle, the rotational axis center 22 of the head pulley 2, the tip 21 of the scraper, and the center of the rubber elastic body 20 are adjusted in a straight line, and the position is maintained. The horizontal shaft 17 is fixed by tightening the bolt 15.

  Since the scraper main body 19 is provided directly below the head pulley 2 instead of the return belt portion 13 behind the head pulley in this way, a margin 14 can be obtained in the engagement with the chute 9, so that the scraper main body 19 is passed after passing through the scraper main body 19. The deposits falling behind 19 can be collected by the chute 9.

Next, referring to FIG. 5, how the scraper body 19 is engaged during maintenance will be described.
As described above, since the holder 18 has the hinge structure 23 on the opposite side of the bolt 15, the bolt 15 of the pair of left and right holders 18 is loosened, and the scraper main body 19 is moved along the conveyor as shown in FIG. It can be tilted to the return side 7 of the belt 5 and rotated backward. If the split type upper chute 24 is removed, the scraper body 19 can be easily adjusted and replaced.

  As explained above, the conveyor belt deposit removing device according to the present invention enables the scraper body 19 to be fixed at a position where the deposit on the conveyor belt 5 is removed just below the head pulley 2 and the bolt 15 is loosened. Thus, since the scraper body 19 can be rotated to the return side 7 of the conveyor belt 5, there is an advantage that the structure is simple. In addition, as an effort to install the transfer chute 9 to the downstream conveying device, considering the maintainability of the scraper, as an arrangement in which the conveyed product is not in direct contact, it prevents biting of foreign matter and reduces the wear of the scraper body 19. Can be prevented.

DESCRIPTION OF SYMBOLS 1 Belt conveyor 2 Head pulley 3 Take-up unit 4 Tail pulley 5 Conveyor belt 6 Conveyance side 7 Return side 8 Hopper 9 Chute 10 Carrier roller 11 Return roller 12 Mounting base 13 Return belt part 14 behind head pulley Margin 15 Bolt 16 Mounting bracket 17 Horizontal shaft 18 Holder 19 Scraper body 20 Rubber elastic body 21 Scraper tip 22 Center of rotation axis of pulley 23 Hinge structure 24 Upper chute

Claims (3)

A lower bracket and an upper bracket are connected to a mounting base provided below the head pulley of the conveyor belt by a hinge structure, and a horizontal shaft is sandwiched between the lower bracket and the upper bracket and fixed with bolts. A pair of left and right holders are provided, and the scraper body is attached to a mounting bracket on the upper part of the horizontal shaft held between these holders via a rubber elastic body, and the bolts are tightened to attach the scraper body to the rotating shaft of the head pulley. An apparatus for removing deposits from a conveyor belt, wherein the scraper body can be fixed at a position toward the center, and the scraper body can be rotated to the return side of the conveyor belt by loosening a bolt.   2. The apparatus for removing deposits from a conveyor belt according to claim 1, wherein the scraper body is provided with a cemented carbide tip at the tip thereof.   A method for removing deposits on a conveyor belt using the conveyor belt deposit removing apparatus according to claim 1 or 2, wherein the scraper body is fixed at a position to be removed directly under the head pulley, and the deposits on the conveyor belt are removed. A method for removing deposits on a conveyor belt, wherein the scraper body is removed by removing the bolts and moving the scraper body toward the return side of the conveyor belt to maintain the scraper body.

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