JP2015059045A - Particulate matter removal device and particulate matter removal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a particulate matter removal device that enhances particulate matter removal capability.SOLUTION: A particulate matter removal device includes a brush 30, which is brought into contact with a downstream-side part with respect to a predetermined discharge position P1 to drop particulate matter W to a conveyance destination, of an endless belt 12, and a suction nozzle 31 that is brought into contact with the endless belt 12 to close at least two upstream-side and downstream-side directions of the upstream-side, downstream-side and lateral-side four directions of the brush 30. The suction nozzle 31 is configured to be capable of being connected to a suction machine B for sucking in the endless belt 12.

Description

  The present invention relates to a granular material removing apparatus and a granular material removing method for removing granular particles attached to a belt conveyor.

  2. Description of the Related Art A conveying device that conveys powder particles such as coal and coke on an endless belt conveyor is known. Such an apparatus is exemplified in Patent Document 1, for example. In the conveyor device of the belt conveyor type, most of the granular material placed on the endless belt falls from the belt end and is sent to the conveying destination, but some of the granular material adheres to the belt. In particular, when the granular material contains moisture, it tends to adhere to the belt. Adhering the granular material to the belt reduces the amount of granular material sent to the transport destination, and when the belt returns, it causes a problem that requires the cleaning work of the falling granular material. End up.

  As one means for suppressing such a problem, for example, Patent Document 1 discloses a removing device in which a brush is provided at a position in contact with a return belt.

  Further, as another means, for example, Patent Document 2 discloses a removing device provided with an air nozzle that blows air on the conveying surface of a belt.

JP 2004-231367 A JP 2001-171824 A

  However, in the removal apparatus provided with the brush described in Patent Document 1, it cannot be said that the removal of the powder particles is sufficient, and the removal capability is naturally limited. Moreover, in the apparatus which provided the air nozzle of patent document 2, since a granular material disperses around, it cannot be used in the environment which dislikes dust generation.

  This invention was made paying attention to such a subject, and the objective is to provide the granular material removal apparatus and the granular material removal method which improved the removal capability of the granular material.

  In order to achieve this object, the present invention takes the following measures.

  That is, the granular material removing apparatus of the present invention is an apparatus that removes the granular material adhered to the endless belt that conveys the granular material, and the predetermined granularity that causes the granular material to fall to the conveyance destination of the endless belt. A brush that is in contact with a part downstream from the discharge position, and a suction nozzle that is in contact with the endless belt and closes at least two upstream and downstream directions among the four upstream, downstream, and side directions of the brush. The suction nozzle is configured to be connectable to a suction machine for sucking the endless belt.

  Moreover, the granular material removal method of the present invention is a method for removing the granular material adhering to the endless belt that conveys the granular material, and the predetermined granularity of dropping the granular material to the conveyance destination in the endless belt. A step in which a brush and a suction nozzle are brought into contact with a portion downstream of the discharge position, and at least two of the upstream, downstream and side directions of the brush are closed with the suction nozzle. And the step of sucking the endless belt from the suction nozzle using the suction force of a suction machine while the endless belt is rotated, and simultaneously rubbing the endless belt with the brush.

  In this way, the powder particles adhering to the endless belt are scraped off by the brush, and the suction nozzle sucks the endless belt, so that the ability to remove the powder particles can be improved. Further, since the suction nozzle is in contact with the endless belt, the powder particles are scraped off by the suction nozzle. Moreover, since the two directions on the upstream side and the downstream side of the brush are closed, the suction force can be increased. Moreover, since the adhering substance can be attracted to the brush side by the suction force, it is considered that the removing ability by the brush can be improved.

  In order to improve the removal capability, the suction nozzle is provided with a closing plate that closes the side of the brush, and is configured to close the upstream, downstream, and side directions of the brush. Preferably it is.

  In order to improve maintenance work efficiency, the brush is formed in an elongated shape extending along the width direction of the endless belt, and is supported so as to be slidable along the width direction of the endless belt, It is preferable that the endless belt is configured to be movable between a contact position that contacts the transport surface of the endless belt and a cleaning position that does not contact the transport surface.

  In order to accurately secure the sealing performance of the suction nozzle, it is preferable that the suction nozzle has a flexible partition plate disposed on the upstream side and the downstream side of the brush and in contact with the endless belt.

The side view which shows typically the conveying apparatus and granular material removal apparatus of one Embodiment of this invention. The perspective view which shows a conveying apparatus and a granular material removal apparatus typically.

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

<Conveyor>
First, the structure of the conveying apparatus 1 in which the granular material removal apparatus 3 of this embodiment is provided is demonstrated.

  As shown in FIGS. 1 and 2, the transport device 1 includes a main roller 10, an auxiliary roller 11, and an endless belt 12 supported by these rollers. The endless belt 12 moves along the rollers 10 and 11 by the rotational drive of the main roller 10, and conveys a granular material W such as coal placed on the conveyance surface. The granular material W is discharged downward from the predetermined discharge position P1 and sent to the conveyance destination. Here, it is set so that the granular material W falls on the endless belt 22 of another conveyance device 2 as a conveyance destination of the conveyance device 1. On the downstream side of the predetermined discharge position P1, a scraper 13 (scraper; charcoal remover) is provided for removing powder particles attached to the endless belt 12 in contact with or in proximity to the endless belt 12.

  The granular material W tends to adhere to the transport surface of the endless belt 12. In particular, in order to reduce the amount of moisture with a heat source, coal (powder body W) that has passed through a coal humidity control facility (CMC; Coal Moisture Control) emits steam and adheres to the endless belt 12 due to the moisture. Cheap. Although the scraper 13 for scraping off the powder W is provided, it is difficult to completely remove the scraper 13 due to bending or wear of the endless belt 12. The granular material W that could not be removed by the scraper 13 is not preferable because it falls to a region other than the conveyance destination (for example, indicated by an arrow Y in the figure) when the endless belt 12 returns.

<Powder removal device>
Therefore, the granular material removing device 3 of the present embodiment is provided. As shown in FIGS. 1 and 2, the removal device 3 includes a brush 30 that contacts a portion of the endless belt 12 that is downstream of the predetermined discharge position P <b> 1. The brush 30 is a bundle of metal wires, and is formed in a long shape extending along the width direction WD of the endless belt 12.

  The removal device 3 has a suction nozzle 31 that contacts the endless belt 12 and closes at least two directions of the upstream side, the downstream side, and the side direction of the brush 30. The suction nozzle 31 has a box 33 that opens toward the endless belt 12 and a pair of partition plates 32 and 34 that are attached to the opening of the box. The partition plates 32 and 34 are disposed on the upstream side and the downstream side of the brush 30. Thereby, the upstream and downstream directions of the brush 30 are closed. In this embodiment, although the partition plates 32 and 34 are formed with the member which uses a polyurethane rubber as a raw material, it is not limited to this. As long as it has flexibility, it may be formed of, for example, rubber or wear-resistant reinforced resin. The box 33 is formed with an exhaust pipe 33a for connection to a suction device B such as a dust collector, and is configured to be connectable to the suction device B for suctioning the endless belt 12. On the lowermost surface of the box 33, a return hole 33b for returning the granular material W to the transfer device 2 as a transfer destination is formed. Thereby, the fallen granular material W is divided into one that is sucked through the exhaust pipe 33a and one that passes through the return hole 33b and falls to the transport device 2. By providing the return hole 33b, it is possible to suppress a reduction in the amount of the granular material W sent to the transport destination.

  In the state where the removing device 3 is installed, a closing plate 35 that closes the side of the brush 30 is attached. Thereby, the suction nozzle 31 closes the four directions of the upstream side, the downstream side, and the side of the brush 30. As shown in FIG. 2, the brush 30 is supported by the box 33 so as to be slidable along the width direction WD of the endless belt 12, and contacts the conveying surface of the endless belt 12 and the conveying surface. It is configured to be movable between cleaning positions that do not.

<Powder removal method>
A method of removing the granular material adhering to the endless belt using the above apparatus will be described.

  First, as shown in FIG. 1, the brush 30 and the suction nozzle 31 are brought into contact with a portion of the endless belt 12 on the downstream side of the predetermined discharge position P <b> 1, and the four directions in the upstream, downstream, and side directions of the brush 30 are contacted. Among them, at least two directions of the upstream side and the downstream side are closed by the suction nozzle 31. Here, the suction nozzle 31 may be configured so as to close the four directions of the brush 30 by attaching a closing plate 35 that closes the side of the brush 30.

  Next, the endless belt 12 is rubbed with the brush 30 at the same time as the endless belt 12 is sucked from the suction nozzle 31 using the suction force of the suction machine in a state where the endless belt 12 is rotated.

  If it does in this way, the water | moisture content in the surface of the granular material W which reached the position which faces the suction nozzle 31 beyond the partition plate 32 without being removed by the scraper 13 will be lost by the suction force of the suction nozzle 31, It is considered that the fixing force of the powder W is reduced. At that time, since the brush 30 rubs the endless belt 12, it is considered that the granular material W is easily removed.

  As mentioned above, the granular material removal apparatus 3 of this embodiment is an apparatus which removes the granular material W adhering to the endless belt 12 which conveys the granular material W, Comprising: At least upstream of the brush 30 in contact with the downstream side of the predetermined discharge position P1 for dropping the body W to the transport destination and the endless belt 12 in the upstream, downstream and side directions of the brush 30 The suction nozzle 31 is configured to be connectable to a suction machine B for sucking the endless belt 12.

  According to this configuration, the brush 30 scrapes off the granular material W adhering to the endless belt 12, and the suction nozzle 31 sucks the endless belt 12. Therefore, it is possible to improve the ability to remove the granular material W. Become. Further, since the suction nozzle 31 is in contact with the endless belt 12, the powder particles are scraped off by the suction nozzle. Further, since the two directions of the upstream side and the downstream side of the brush 30 are closed, the suction force can be increased. In addition, it is considered that the removal capability of the brush 30 can be improved because the adhering substance can be attracted to the brush side by the suction force.

  In particular, in order to reduce the amount of moisture with a heat source, coal that has passed through a coal humidity control facility (CMC; Coal Moisture Control) emits steam. In this state, there is moisture on the surface of the particles, and it is considered that the particles are difficult to slip, but by sucking, moisture on the surface of the particles is released with heat, and the particles are easily slipped. It is thought that it becomes easy to remove the body.

  In the present embodiment, the suction nozzle 31 is provided with a closing plate 35 that closes the side of the brush 30, and is configured to close the four directions of the upstream side, the downstream side, and the side of the brush 30.

  According to this configuration, the suction force can be sufficiently improved, and as a result, the removal ability can be improved.

  In the present embodiment, the brush 30 is formed in an elongated shape extending along the width direction WD of the endless belt 12, and is supported so as to be slidable along the width direction WD of the endless belt 12. It is configured to be movable between a contact position that contacts the transport surface and a cleaning position that does not contact the transport surface.

  According to this configuration, if the long brush 30 is moved to the cleaning position, the brush 30 is not in contact with the conveying surface of the endless belt 12, so that cleaning is easy and the maintenance work efficiency is improved. It becomes possible. Further, maintenance can be performed without stopping the endless belt 12.

  In the present embodiment, the suction nozzle 31 includes flexible partition plates 32 and 34 that are disposed on the upstream side and the downstream side of the brush 30 and contact the endless belt 12.

  According to this configuration, since the partition plates 32 and 34 can be replaced, the partition plates 32 and 34 can be appropriately brought into contact with the endless belt 12 and the sealing performance of the suction nozzle 31 can be accurately ensured.

  As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not limited to these embodiment. The scope of the present invention is shown not only by the above description of the embodiments but also by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in this embodiment, the suction nozzle 31 is configured to close the upstream, downstream, and side directions of the brush 30 by the partition plate 32 and the closing plate 35, but the closing plate 35 is omitted. Thus, the suction nozzle 31 may be configured to close the upstream and downstream sides of the brush 30.

  In this embodiment, the return hole 33b is formed in the box 33 of the suction nozzle 31, but it may be a closed box 33 that does not have the return hole 33b. If comprised in this way, it will become possible to improve a suction power markedly. Moreover, after forming the return hole 33b in the box 33, you may provide the cover body which can switch the return hole 33b to either an open state or a closed state. If such a lid is provided, when the amount of the granular material W to be removed by the suction nozzle 31 is large, it is possible to accurately prevent the reduction of the granular material W to be sent to the transport destination by making the opening state. When the amount of the granular material W to be removed by the suction nozzle 31 is small, the suction force can be increased by making the mouth closed so that the granular material W can be removed accurately.

  In the present embodiment, coal or coke is exemplified as the granular material W, but is not limited thereto. Conveying inorganic powders such as steel / non-ferrous metal raw materials, cement raw materials, ready-mixed lime, fertilizer raw materials, quarry raw materials, ceramic raw materials, coke raw materials, and organic powders such as feeds, processed foods, and papermaking raw materials Applicable to the device.

  The structure employed in each of the above embodiments can be employed in any other embodiment. The specific configuration of each unit is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 12 ... Endless belt 30 ... Brush 31 ... Suction nozzle 32, 34 ... Partition plate 35 ... Closure board B ... Suction machine W ... Granule P1 ... Predetermined discharge position

Claims (5)

An apparatus for removing particles adhering to an endless belt that conveys particles,
Of the endless belt, a brush that is in contact with a portion on the downstream side of a predetermined discharge position for dropping the granular material to the transport destination; and
A suction nozzle that contacts the endless belt and closes at least two directions of the upstream side and the downstream side among the four directions of the upstream side, the downstream side, and the side of the brush;
The particulate matter removing apparatus, wherein the suction nozzle is configured to be connectable to a suction machine for sucking the endless belt.   2. The powder according to claim 1, wherein the suction nozzle is provided with a closing plate that closes a side of the brush, and is configured to close four directions of an upstream side, a downstream side, and a side of the brush. Body removal device. The brush is formed in a long shape extending along the width direction of the endless belt,
2. The endless belt is slidably supported along the width direction of the endless belt, and is configured to be movable between a contact position that contacts the transport surface of the endless belt and a cleaning position that does not contact the transport surface. Or the granular material removal apparatus of 2.   The granular material removing device according to any one of claims 1 to 3, wherein the suction nozzle includes a flexible partition plate that is disposed on an upstream side and a downstream side of the brush and contacts the endless belt. A method for removing particles adhering to an endless belt that conveys particles,
Of the endless belt, the brush and the suction nozzle are brought into contact with a portion downstream of a predetermined discharge position where the granular material is dropped to the transport destination, and at least of the upstream, downstream and side directions of the brush. Capping the upstream and downstream two directions with the suction nozzle;
And a step of rubbing the endless belt with the brush at the same time that the endless belt is sucked from the suction nozzle using the suction force of a suction machine in a state where the endless belt is rotated.

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