JPH06198210A - Recovery device of dust collector - Google Patents

Abstract

PURPOSE:To recover waste refuse of building waste without using a cyclone and a knockout box and to prevent the lowering of the suction capacity of a dust collector. CONSTITUTION:In a dust collector 31 used in crushing equipment crushing building waste to regenerate and reutilize the same, a waste refuse bonding recovery member 39 movable in the direction crossing the flow of exhaust or sucked air is provided in the waste refuse recovery hood 35 of the dust collector 31 or in the vicinity thereof. A vibration screen may be provided under the waste refuse recovery hood 35. It is desirable that the recovery member 39 is formed from a reticulated band and a waste refuse recovery hopper is provided under a position where the recovery member 39 is moved to the outside of the waste refuse recovery hood 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collector recovery apparatus, and more particularly to a dust collector recovery apparatus used in a crushing facility for crushing and recycling construction waste.

[0002]

2. Description of the Related Art Construction waste such as asphalt concrete and concrete lumps is designated as a designated by-product of the Recycling Law and is stipulated to promote recycling. Is crushed and used as a roadbed material. Further, in the case of asphalt / concrete, it is used by heating as an asphalt mixture in addition to the roadbed material.

When the asphalt-concrete or concrete lumps are received from each site to the factory (crushing equipment), the asphalt-concrete or concrete lumps are often contaminated with wood chips, vinyl bags, work gloves or the like. , This garbage becomes a problem when it is recycled,
The current situation is that it hinders recycling.

The mixed wood chips, plastic bags, work gloves, etc. pass through the crushing equipment while being mixed with the asphalt / concrete and concrete lumps, and are crushed together with the asphalt / concrete and concrete lumps, and then the belt conveyor. Be transported in. When conveyed by this conveyor, dust is removed by visual inspection by an operator on the belt conveyor, or after being crushed, it is removed by an oversized sieve. Further, the dust left unremoved is separated from the product by the discharge air or the suction air of the dust collecting device provided in the middle of the crushing equipment, and is blown through the duct by the blower to be collected by the dust collector.

[0005]

By the way, when dust is collected by the above-mentioned conventional dust collector, the crushed fine particles are also collected together with the dust. Since the fine particles can be reused, dust is collected by a knockout box or a cyclone of the primary dust collector, and the fine particles are collected by a bag filter for reuse. Therefore, there is a problem that a plurality of dust collectors are used and it takes time and effort.

Further, the dust sucked by the blower and the crushed dust are caught on the bent portion of the duct, and a large portion of the fine particles is caught on the air volume adjusting damper of the dust collector or the bent portion of the duct. However, there is a problem that the blower may be accumulated in the duct and the suction ability of the blower may be deteriorated.

An object of the present invention is to recover fine particles of construction waste without using a cyclone, a knockout box or the like, and to prevent the suction capacity of the dust collector from being lowered in order to improve the above problems. Another object of the present invention is to provide a collecting device for the dust collector.

[0008]

In order to achieve the above object, the present invention is a dust collector used in a crushing facility for crushing and recycling construction waste. The collection device of the dust collecting apparatus is configured to include a collection body, which is movable in a direction intersecting the flow of the discharge air or the suction air, in the collection hood or in the vicinity of the collection hood and which collects dust. In the collection device of the dust collector, it is preferable that the collection body is a mesh band, or that a dust collection hopper or chute is provided below the position where the collection body moves outside the dust collection hood. Is.

Further, in the collecting device of the dust collector, the flow of the crushed material is directed in the same direction as the flow of the discharge air or the suction air, and a conveying band is provided near the dust collecting hood, or It is desirable that the crushed material flow is directed in a direction orthogonal to the flow of the discharge air or the suction air, and a vibrating screen is provided below the dust collecting hood.

[0010]

By adopting the dust collector collecting device of the present invention, the fine particles of the construction waste crushed by the crushing equipment are discharged together with the dust by the discharge air or the suction air and the dust collecting hood of the dust collector is used. Sent in. The dust of the construction waste is attached to the collecting body provided in the garbage collecting hood or in the vicinity of the garbage collecting hood, and only the fine particles are collected in the dust collector.

The garbage of the construction waste attached to the collecting body is
By moving the collecting body to the outside of the garbage collecting hood, it is collected in the garbage collecting hopper and reused.

Thus, since dust of construction waste is hardly collected in the dust collector, a cyclone or a knockout box is not used and is unnecessary. In addition, dust and fine particles therefor are not caught on the air volume damper of the dust collector or the bent portion of the duct, and the suction capability of the blower does not decrease.

[0013]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 6 shows a flow chart of a crushing facility for treating construction waste such as asphalt / concrete and concrete lumps. In FIG. 6, the rough stone S is fed into the rough stone hopper 1 and then sent to the vibrating grizzly feeder 3. The vibrating grizzly feeder 3 divides the particle size into, for example, a particle size of 40-50 mm and a large particle size. To be done.

The rough stones S having a particle size of 40 to 50 mm or more divided by the vibrating grizzly feeder 3 are put into the primary crusher 11, crushed and sent to the belt conveyor 13. The cutting material G made of construction waste such as asphalt / concrete or concrete lump is put into the cutting material hopper 15 and then sent to the belt conveyor 13.

40 to 40 sent to the belt conveyor 13
The rough stone S having a grain size larger than 50 mm and the cutting material G are conveyed by the belt conveyor 13 and are then sent to the secondary crusher 17. After being crushed into fine particles C by the secondary crusher 17, it is sent to the vibrating screen 23 through the belt conveyors 19 and 21. Fine particles C finer than a certain size are sorted by the vibrating screen 23 into a certain size, and the fine particles C smaller than the certain size are conveyed to the belt conveyor 25.
After that, they are stocked in the product stockyard 9B.

The fine particles C, which are distributed by the vibrating screen 23 and are larger than a certain size, are conveyed to the belt conveyor 13 via the belt conveyor 27, and are further sent to the secondary crusher 17 to be crushed. The products stocked in the product stockyards 9A and 9B are used for an asphalt regeneration plant or as a roadbed material.

For example, a hopper 29 is provided above the belt conveyor 21 or 13. Therefore, the fine particles C of the construction waste and the dust on the belt conveyor 19 or 27 are dropped from the belt conveyor 19 or 27 by the traveling movement of the belt conveyor 19 or 27, and the hopper 2
It is transferred to the belt conveyor 21 or 13 via 9.

A dust collector 31 is provided between the belt conveyor 19 (27) and the hopper 29 as shown in FIG. In FIG. 1, this dust collector 3
Reference numeral 1 denotes a discharge hood 33 which is provided below the belt conveyor 19 (27), and discharges discharge air by a blower (not shown), and a dust collection provided opposite to the discharge hood 33 at an appropriate interval. The suction hood 35 as a hood is composed of a suction hood 35, and a dust collector and a suction blower (not shown) on the leeward side of the suction air in FIG.

A collection device 37 is provided at the tip of the suction hood 35 (right end in FIG. 1). Part of the recovery device 37, for example, a mesh band 39 as a recovery body, can be extended and moved in, for example, a direction orthogonal to the flow of the discharge air (a front-rear direction in FIG. 1). It is provided.

The mesh belt 39 is endless and has a driving roller 41 rotatably supported on the right side of the suction hood 35 and a driven roller 43 rotatably supported on the left side of the suction hood 35. It is wound. An output shaft 45 is attached to the drive roller 41, and a drive motor 47 is connected to the output shaft 45.

With the above structure, when the drive motor 47 is driven, the drive roller 41 is rotated via the output shaft 45. The rotation of the drive roller 41 causes the mesh belt 39 to move in the arrow direction.

A dust hopper 49 is provided on the front side of the suction hood 35 and on the lower side on the left side of the mesh belt 39. A belt conveyor 51 is provided below the dust hopper 49.

With the above construction, while the fine particles C and the dust of the construction waste are dropped from the belt conveyor 19 (27), are put on the belt conveyor 21 (13) through the hopper 29, and are transferred to the next step, The discharge air is discharged from the discharge hood 33 toward the suction hood 35 and is sucked into the dust collector by the suction blower. By the pressure of the air for both discharge and suction, the dust is sucked into the dust collector, and at the same time, the dust mainly composed of fine particles C larger than the mesh size of the mesh belt 39 is sprayed and adsorbed on the mesh belt 39. It
At this time, since the fine particles C having a size larger than the size of the mesh have a large specific gravity, they are not adsorbed to the mesh belt 39 and fall as they are.

The mesh belt 39 adsorbing dust is moved by the drive of the drive motor 47 as shown by the arrow, and when it is moved onto the dust hopper 49, it is not affected by the suction air and the discharge air, and the dust moves by gravity. Naturally falls on the hopper 49. The dust is placed on the belt conveyor 51 via the dust hopper 49 and is transported to another place.

As described above, the dust of the construction waste comes to be adsorbed (attached) to the mesh belt 39 and collected, and a cyclone or a knockout box for separating the dust and the fine particles C is not used, It becomes unnecessary. In addition, dust and fine particles C for that are not caught on the air volume damper or the bent portion of the duct in the dust collector,
There is no decrease in the suction capacity of the blower.

FIG. 2 shows another embodiment as an alternative to FIG. 2, the same parts as those in FIG. 1 are designated by the same reference numerals, and different points will be described. That is, in FIG. 2, at the front end of the mesh belt 39,
The tip of a piston rod 55 mounted on the cylinder 53 is fixed. A dust hopper 49 is provided on the left side of the suction hood 35, and another dust hopper 57 is provided on the right side of the suction hood 35. The rest of the configuration is the same as in FIG.

With the above construction, while the fine particles C of the construction waste and the dust are dropped from the belt conveyor 19 (27), passed through the hopper 29 and placed on the belt conveyor 21 (13) and transferred to the next step, The discharge air is discharged from the discharge hood 33 toward the suction hood 35 and is sucked into the dust collector by the suction blower. Due to the pressure of the air for both discharge and suction, the dust is sucked into the dust collector and the fine particles C having a size larger than the mesh size of the mesh band 39 are mainly sprayed and adsorbed on the mesh band 39. . At this time, the large fine particles C having a large specific gravity due to the size of the mesh drop without being adsorbed by the mesh belt 39.

When the mesh belt 39 on which dust is adsorbed causes the piston rod 55 to project in FIG. 2 by the operation of the cylinder 53, the mesh belt 39 moves to the right and is stopped at a position directly above the dust hopper 57. In this state, the dust adsorbed on the mesh belt 39 is not influenced by the air for both suction and discharge, and the dust is collected by the dust hopper 57 by the power. Further, when dust is adsorbed on the left side of the mesh band 39, the cylinder 53 is operated and the piston rod 55 is contracted so that the state shown in FIG. The dust is collected in the dust hopper 49 by the power without being affected.
Also in this embodiment, the same effect as that of the above-described embodiment is obtained.

In FIG. 6, another dust collecting device 59 is provided between the belt conveyor 21 and the vibrating screen 23. As shown in FIG. 4, the vibrating screen 23 provided with the dust collecting device 59 has a plurality of vertically arranged nets 63A, 63B, 63C in the vibrating screen body 61. A vibrating body 65 is provided at the upper right position in the net 63A of FIG.

With the above-described structure, the fine particles C and dust carried on the belt conveyer 21 are carried on the net 63A which is vibrated by the operation of the vibrating body 65. Due to the vibration of the net 63A, the fine particles C smaller than the size of the mesh of the net 63A drop and are placed on the net 63B. Net 6
Fine particles C having a size larger than the mesh size of 3A are placed on the belt conveyor 27.

The fine particles C placed on the net 63B are the net 63.
Due to the vibration of B, the fine particles C smaller than the size of the mesh of the mesh 63B are dropped and placed on the mesh 63C. The fine particles C, which are larger than the mesh size of the mesh 63B, drop from the supply port 61A and are transferred by, for example, a belt conveyor (not shown).

The fine grain fraction C placed on the net 63C is the net 63.
Due to the vibration of C, the fine particles C smaller than the mesh size of the mesh 63C drop from the supply port 61B and are transferred by, for example, a belt conveyor (not shown). Further, the fine grain fraction C having a size larger than the mesh size of the mesh 63C is dropped from the supply port 61C and transferred by a belt conveyor (not shown).

As described above, the fine grain fraction C conveyed by the belt conveyor 21 is divided into several sizes (three types in this embodiment) by the vibrating screen 23.

As shown in FIGS. 3 and 4, a dust collecting device 59 is provided at an upper position substantially in the center of the vibrating screen 23, and in some cases, at the left end of the vibrating screen 23. The dust collecting device 59 is composed of a duct 67 connected to a dust collector and a suction blower (not shown), and a suction hood 69 at the tip of the duct 67.

With the above structure, when the dust collector and the suction blower are operated, the suction air is sucked from the suction hood 69 as shown by the arrow. The suction air sucks dust into the dust collector. Some ducts 67 are provided with dampers 67A.

A collecting device 71 is provided at the tip of the suction hood 69. For example, a mesh band 73 as a recovering body which constitutes a part of the recovering device 71 is movable in such a manner as to extend in, for example, a right angle direction (a left-right direction in FIG. 3) as a crossing direction with respect to the flow of the suction air. It is provided.

This mesh band 73 has an endless shape and is rotatably supported on the drive roller 75 rotatably supported on the right side of the suction hood 69 in FIG. 3 and on the left side of the suction hood 69 in FIG. Followed roller 77
It is wound around. The drive roller 75 has an output shaft 7
9 is mounted, and a drive motor 81 is connected to the output shaft 79.

With the above structure, when the drive motor 81 is driven, the drive roller 75 is rotated via the output shaft 79. The rotation of the drive roller 75 causes the mesh belt 73 to move in the arrow direction.

On the right side of the vibrating screen 23 and in the mesh band 7
A dust hopper 83 is provided at a lower position on the right side of 3.

With the above construction, while the fine particles C of construction waste and dust are sent from the belt conveyor 21 to the vibrating sieve 23 and the fine particles C are sorted into several sizes, the vibrating sieve is used. Due to the suctioned air from the suction hood 69 and the air blown from below the mesh of the vibrating screen 23, the dust that has floated up is larger than the mesh size of the mesh band 73 and the mesh band 7
Adsorbed on 3.

The mesh belt 73 having adsorbed dust is moved by the drive motor 81 as shown by the arrow, and when it is moved onto the dust hopper 83, it is not affected by the sucked air and the dust is absorbed by the power in the hopper 83. To fall naturally,
It is temporarily stored in the dust hopper 83 or is transported to another place by a belt conveyor (not shown).

With the above-described structure and operation, the same effect as that of the above-described embodiment can be obtained.

FIG. 5 shows another embodiment as an alternative to FIG. 5, the same parts as those in FIG. 3 are designated by the same reference numerals, and different points will be described. That is, in FIG. 5, at the right end of the mesh belt 73,
The tip of a piston rod 87 mounted on the cylinder 85 is fixed. A dust hopper 83 is provided on the right side of the vibrating screen 23, and the vibrating screen 23 is
Another garbage hopper 89 is provided on the left side of the. The rest of the configuration is the same as that of FIG.

With the above-described structure, while the fine particles C of construction waste and dust are sent from the belt conveyor 21 to the vibrating screen 23 and the fine particles C are sorted into several sizes, the vibrating screen is used. Due to the air sucked from the suction hood 69 and the air blown from below the mesh of the vibrating screen 23, the dust that has floated up becomes a large dust due to the size of the mesh of the mesh belt 73, and the mesh dust in the state shown in FIG. Adsorbed.

In this state, the operation of the cylinder 85 causes the piston rod 87 to project so that the mesh belt 73 is positioned and stopped immediately above the dust hopper 89. In this state, the dust adsorbed on the mesh band 73 is not affected by the suction air, and the dust is temporarily stored in the dust hopper 89 by the power or is transported to another place by a belt conveyor (not shown), for example. .

When dust is adsorbed on the right part of the mesh belt 73, the cylinder 85 is operated to contract the piston rod 87 to the state shown in FIG. The dust is temporarily stored in the dust hopper 83 by the power not being received or is transported to another place by a belt conveyor (not shown), for example.

Also in this embodiment, the same effect as that of the embodiment shown in FIG. 3 is obtained.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes. In the above-described embodiment, an example in which the mesh bands 39, 73 are provided so as to be movable in a direction perpendicular to the flow of the discharge air or the suction air has been described. It is also possible to extend the sheet to be movably provided. Further, although the mesh belts 39 and 73 are used as the collection body in the description, it is possible to collect dust of a desired size by changing the mesh size of the mesh belts 39 and 73.
In addition to the mesh belts 39 and 73, a woven cloth or a knitted fabric to which dust is adsorbed for collecting dust may be used.

[0050]

As will be understood from the above description of the embodiments, according to the present invention, since the construction is as set forth in the claims, the dust of the construction waste adheres to the collecting body. Since it is collected and collected so that it is hardly collected by the dust collector, the cyclone or the knockout box is not used and is unnecessary. In addition, dust and fine particles therefor will not be caught on the bent portion of the damper or duct in the dust collector, and the suction ability of the dust collector will not be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a dust collector according to an embodiment of the present invention.

FIG. 2 is a perspective view of a dust collector according to another embodiment, which is an alternative to FIG.

FIG. 3 is a perspective view of a dust collector according to another embodiment of the present invention.

4 is a cross-sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view of a dust collector according to another embodiment, which is an alternative to FIG.

FIG. 6 is a flowchart of a crushing facility for processing construction waste for implementing the present invention.

[Explanation of symbols]

 13, 19, 21 Belt conveyor 23 Vibrating sieve 27 Belt conveyor 29 Hopper 31 Dust collector 33 Discharge hood 35 Suction hood (dust collection hood) 37 Collection device 39 Mesh belt (collection body) 49, 57 Dust hopper 59 Dust collection device 69 Suction hood 71 Recovery device 73 Mesh belt 83,89 Trash hopper

Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B09B 5/00 ZAB L

Claims (5)

[Claims] 1. A dust collector used in a crushing facility for crushing and recycling construction waste, wherein discharge air or suction air is provided in or near the dust collecting hood of the dust collecting apparatus. Can move in the direction intersecting the flow,
A collection device for a dust collector, comprising a collection body for adhering dust. 2. The dust collecting apparatus collecting apparatus according to claim 1, wherein the collecting body is a mesh band. 3. The dust collecting device collecting apparatus according to claim 1, further comprising a dust collecting hopper or a chute below the position where the collecting body is moved outside the dust collecting hood. 4. The flow direction of the crushed material is directed in the same direction as the flow of the discharge air or the suction air, and a conveyor band is provided in the vicinity of the dust collecting hood. A device for collecting the dust collecting device according to items 2 and 3. 5. The vibrating screen is provided below the dust collecting hood while directing the flow of the crushed material in a direction orthogonal to the flow of the discharge air or the suction air. , 2 and 3 collection device of the dust collector.