JP2015066500A - Vibration screen device, and vibration transport device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration transport device and a vibration screen device, which can reduce air column vibrations at a low cost.SOLUTION: A vibration screen device 1 comprises: a casing 5 formed with a supply port 2 and a discharge port 3 and arranged therein with a screening surface 9; a vibration generator system 6 for vibrating the casing 5; a vent hole formed in the casing 5; and an air permeable filter member for covering said vent hole. The vibration screen device 1 is constituted such that the deposit on the inner side of said air permeable filter member is enabled to fall from said vent hole into the casing by the vibrations of said casing.

Description

  The present invention relates to a vibration conveying apparatus that conveys incineration residues and the like by vibration and a vibration sieve apparatus that conveys while sieving by vibration in a garbage incineration plant or the like equipped with an ash melting furnace.

  Conventionally, various vibration sieve devices and vibration transfer devices are known (for example, Patent Documents 1 to 5), and incineration residues (incineration ash) put into an ash melting furnace in a garbage incineration plant or the like equipped with an ash melting furnace. It is common to remove unsuitable melted materials by applying a soot) to a vibrating sieve device.

  As shown in FIG. 4, the ash transport facility (vibration transport device (not shown), belt conveyor 23, etc.) and the vibration sieve device 100 are substantially sealed casings so that the ash to be melted and solidified does not spout outside the device. Therefore, the vibration of the vibration sieving device 100 or a vibration conveyance device (vibration conveyor) (not shown) propagates through the gas (mainly air) inside the casing 5 as a medium, and opens to the ash pit 24. Thus, the glass window 25, shutter, etc. of the building frame may be vibrated (air column vibration), causing problems such as noise and damage.

  Therefore, an air column vibration suppression structure for a vibration generator has been proposed in which the upper and lower surfaces and front and rear end surfaces of a casing such as a vibration conveyor are formed in an arc shape to reduce air column vibration by reducing air pulsation caused by casing vibration. (Patent Document 6).

JP-A-8-14521 Japanese Patent Laid-Open No. 10-192815 JP 2006-142136 A JP 2008-142628 A JP 2003-192117 A (vibration conveying device) Japanese Patent No. 5074783

  Although the air column vibration suppression structure of the conventional vibration generator described above can reduce the air column vibration effectively by making the upper and lower surfaces and front and rear end surfaces of the casing arc, the cost for processing into the arc It takes.

  Further, it is also desired to further reduce the air column vibration without increasing the cost even in the arc-shaped casing.

  Then, it aims at providing the vibration conveyance apparatus and vibration sieve apparatus which can reduce air column vibration at low cost.

  In order to achieve the above object, a vibration sieve device according to the present invention includes a casing having a supply port and a discharge port and a sieve surface disposed therein, a vibration generator for vibrating the casing, and the casing. And a breathable filter member that covers the vent, so that deposits inside the breathable filter member can fall from the vent into the casing due to vibration of the casing. It is configured.

  The vibration transfer device according to the present invention includes a casing in which a supply port and a discharge port are formed, a vibration generating device that vibrates the casing, a ventilation port provided in the casing, and a ventilation that covers the ventilation port. And a deposit inside the breathable filter member can fall into the casing from the vent through vibration of the casing.

  The breathable filter member is preferably a filter cloth.

  According to the present invention, the pressure fluctuation inside the casing caused by the vibration of the casing is reduced when the air in the casing enters and exits through the vent hole, so that the air column vibration can be reduced. Furthermore, even if incineration ash or the like adheres to the air permeable filter member covering the vent hole, the air permeable filter member can be prevented from being clogged because it falls due to the vibration of the casing.

It is a side view which shows schematic structure of one Embodiment of the vibration sieve apparatus which concerns on this invention. It is a schematic block diagram which shows the use condition of the vibration sieve apparatus of FIG. It is a side view which shows schematic structure of one Embodiment of the vibration conveying apparatus which concerns on this invention. It is a schematic block diagram which shows the conventional vibration sieve apparatus, an ash conveyor, and an ash pit.

  An embodiment of a vibrating sieve device according to the present invention will be described with reference to FIG. As shown in FIG. 1, the vibration sieve device 1 includes a casing 5 in which a supply port 2 and discharge ports 3 and 4 are formed, a vibration generator 6 that vibrates the casing 5, and ventilation provided in an upper portion of the casing 5. An opening 7 and a breathable filter member 8 that covers the ventilation hole 7 are provided.

  In the illustrated example, the casing 5 is in the form of a long box extending in the conveying direction, and an upward supply port 2 is opened on one end side of the casing 5, and a downward discharge port 4 is formed on the other end side and the middle portion of the casing 5. 3 are open.

  Inside the casing 5, a sieve surface 9 formed of comb teeth, a screen or the like is disposed. The casing 5 is connected to a counterweight 10 extending along the lower side of the casing 5 by a plurality of movable levers 11 so as to be relatively movable. The casing 5 and the counterweight 10 are also connected by a vibration spring 12. A vibration generator 6 is attached to the counterweight 10.

  The vibration generator 6 includes a vibration motor 6a, a pulley 6b that is drivingly connected to the vibration motor 6a and a pulley belt, and a connecting member 6d that connects the crankshaft 6c that is rotated by the pulley 6b and the casing 5. . As a mechanism for generating vibration in the vibration generating device 6 and the casing 5, a known vibration generating device such as the vibration generating device disclosed in Patent Document 5 (Japanese Patent Laid-Open No. 2008-142628) can be adopted. .

  Each of the plurality of movable levers 11 is rotatably connected to a support frame 13 at each intermediate portion, and the support frame 13 is connected to a support column 15 via a vibration-proof spring 14.

  In the illustrated example, the vent 7 provided in the upper portion of the casing 5 includes a tubular portion 7 a extending upward from the casing 5. Between the flange portion 7 b formed at the upper end of the tubular portion 7 a and the annular pressing plate 16. In addition, a breathable filter member 8 is sandwiched. The air-permeable filter member 8 is a member that allows air to pass through but does not allow ash, dust, or the like to pass through. The air-permeable filter member 8 can be preferably formed of a filter cloth such as a bag filter.

  As shown in FIG. 2, the vibration sieve device 1 has a flexible joint 20 connected to the supply port 2, and incineration residues such as incineration ash discharged from an incinerator (not shown) and sent from the upstream side to the outside. It is put into the casing 5 so as not to leak. The flexible joints 21 and 22 are also connected to the discharge ports 3 and 4 respectively, and the ash and the like screened in the casing 5 is discharged from the discharge port 3 and is melted by a vibrating conveyor or the like (not shown). The unsuitable molten material is conveyed from the discharge port 4 to the ash pit 24 via the belt conveyor 23 and is discharged into the ash pit 24. The belt conveyor 23 has a casing structure in which the periphery of the conveyance path is closed so that ash does not appear outside until it is conveyed to the ash pit 24.

  When the vibration generator 6 operates, the vibration sieve device 1 configured as described above moves the casing 5 back and forth in the direction of the arrow X in FIG. 1 and sieves the incineration residue such as incineration ash introduced from the supply port 2 through the sieve surface 9. Then, it is conveyed toward the discharge ports 3 and 4. Since the pressure fluctuation generated in the casing 5 due to the vibration of the casing 5 is reduced when the gas inside the casing 5 enters and exits through the vent 7, the air column vibration in the casing 5 can be reduced. As a result, it is possible to reduce or prevent the window glass 25, the shutter, and the like provided in the building of the ash pit 24 from generating noise or being damaged due to vibration (air column vibration).

  As the ash and dust are steadily rising inside the casing 5 due to the vibration of the casing 5, there is a concern that the air-permeable filter member 8 of the ventilation hole 7 may be clogged, but the ventilation hole 7 is provided at the upper part of the casing 5. Therefore, even if ash or the like in the casing 5 adheres to the breathable filter member 8 that covers the vent hole 7, the attached ash falls due to vibration of the casing 5. Clogging can be prevented.

  In the above embodiment, there are two outlets (3, 4), but the outlets are provided at three or more locations according to the particle size to be sieved by gradually reducing the sieve size of the sieve surface 9. It can also be provided. The casing may have a rectangular cross section, but may have other cross sectional shapes such as an arcuate cross section. The vent 7 is provided directly above the casing 5 in the illustrated example, but it can also be provided on the side surface of the casing 5, or directly above if the casing has a cross-sectional shape of an arc, circle, ellipse, or the like. Not limited to this, it can also be provided at a position shifted from directly above to the side, and ash and other adhering matter adhering to the inside of the air-permeable filter member 8 due to vibration of the casing 5 can fall into the casing 5 from the vent hole 7. What is necessary is just to be comprised.

  Although the vibration sieving device has been described in the above embodiment, it can be configured as a vibration conveyance device by omitting the sieving surface 9 and the middle outlet 3 of the vibration sieving device of the above embodiment.

  FIG. 3 shows a schematic configuration of the vibration transfer device according to the present invention. About a vibration conveyance apparatus, the same code | symbol is attached | subjected to the component similar to the vibration sieve apparatus shown in FIG. 1, and duplication description is abbreviate | omitted. In the illustrated example, the vibration transfer device 30 has the supply port 2 and the discharge port 4 on both end faces of the casing, and is connected to the other vibration transfer devices 30A and 30B in the front and rear.

  Although FIG. 2 shows an example in which the belt conveyor 23 is connected to the downstream side of the vibration sieving device 1, the vibration conveying device can be connected to the downstream side of the vibration sieving device via a flexible joint. Both the apparatus 1 and the vibration conveyance device 30 can be provided with the vent 7 and the breathable filter 8 for reducing the air column vibration, or the vent hole 7 and the breathable filter 8 are provided only in the vibration conveyance device 30. Also good.

DESCRIPTION OF SYMBOLS 1 Vibrating sieve apparatus 2 Supply port 3, 4 Outlet 5 Casing 6 Vibration generating apparatus 7 Ventilation hole 8 Breathable filter member 30 Vibration conveyance apparatus

Claims (4)

A casing in which a supply port and a discharge port are formed and a sieving surface is disposed inside, a vibration generating device that vibrates the casing, a vent hole provided in the casing, and a breathability that covers the vent hole And a filter member, wherein the deposit inside the breathable filter member can fall into the casing from the vent through vibration of the casing. A casing having a supply port and a discharge port, a vibration generating device that vibrates the casing, a vent provided in the casing, and a breathable filter member that covers the vent. An oscillating transport device characterized in that deposits inside the breathable filter member can fall into the casing from the vent hole by vibration.   The vibration sieve device according to claim 1, wherein the air-permeable filter member is a filter cloth. The vibration conveyance device according to claim 2, wherein the breathable filter member is a filter cloth.

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