JPH06319931A - Dust collector in grain drying and conditioning facilities - Google Patents

Abstract

PURPOSE:To obtain the dust collector generating no malodor and capable of also eliminating a sludge disposal problem. CONSTITUTION:A conveyor 10 feeding rice hulls in almost definite thickness is horizontally provided in a dust removing chamber 9 and the bottom surface of the conveyor 10 is formed into a reticulated form so as to pass shower water through the rice hull layer to reflux the same to a water tank 8 and, further, the start end of the conveyor 10 is connected to a rice hull storage chamber 3 and the terminal thereof is connected to a fermentation tank 23 for producing compost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain drying and preparing facility such as a rice center and a canter elevator, and more particularly to a dust collecting device in the grain drying and preparing facility.

[0002]

2. Description of the Related Art Conventionally, in this type of grain drying and preparation facility, in order to collect a large amount of dust generated from the receiving process to the shipping process, a collection device connected to various processing equipment and transport equipment installed in each process. The dust ducts are concentratedly installed in a wet dust collector installed outdoors to efficiently collect dust (see Japanese Patent Laid-Open No. 22440/1992, etc.).

This dust collector will be described with reference to FIG.
A dust removing chamber 102 is formed above the water tank 101, and a shower pipe 103 is provided above the dust removing chamber 102.
2, a dust-containing air inlet 104 is provided at one side of the lower part of the dust removal chamber 102.
A clean air outlet 105 is provided at the upper end of each of the water tanks 10.
A sludge conveyor 106 is provided in the inside 1 and a dust removing chamber 1
A coarse dust conveyor 107 is provided at the lower end of 02 to remove dust by bringing the dust-containing air supplied into the dust removal chamber 102 into contact with shower water, and the coarse dust is carried out by the coarse dust conveyor 107 into the water tank 101. The sunk fine dust and soil (sludge) are formed so as to be taken out by the sludge conveyor 106.

[0004]

By the way, all the sludge cannot be carried out by the sludge conveyer 106 and the coarse dust conveyer 107, and the sludge remaining in the water tank 101 rots to give off a bad odor, which is unsanitary. Is. Also,
It was also difficult to secure a place to exhaust the sludge that was carried out.

In view of the above problems, it is a technical object of the present invention to provide a dust collecting apparatus in a grain drying and preparing facility which does not cause a bad odor and solves the sludge disposal problem.

[0006]

In order to solve the above-mentioned problems, the present invention forms a water tank at the bottom and a dust-removing chamber provided with a dust-containing air inlet and a clean air exhaust port, respectively, above the water-retaining chamber. In a dust collector in a grain drying and preparation facility, which is provided with a shower water supply device connected to the water tank above the chamber, a. A conveyor for transporting rice husks having a substantially constant layer thickness is horizontally installed in the dust removing chamber. B. The bottom surface of the conveyor is formed in a net shape so that the shower water is passed through the rice husk layer and is returned to the water tank. C. Further, the conveyance start end side of the conveyor is connected to the rice husk storage. D. On the other hand, the conveyor end side of the conveyor is connected to a fermenting tank for producing compost. I took the technical means.

Then, an exhaust pipe of a dryer may be connected to the fermentation tank.

[0008]

[Operation] Shower water that comes in contact with dusty wind picks up dusty dust and drops it as sewage, but most dust and soil adheres to the chaff and is removed by passing through the chaff layer. , Is returned to the water tank as clean water. Since the rice husks supplied from the rice husk storage are continuously or intermittently conveyed, the rice husks to which almost constant dust or soil adheres are sequentially replaced with new rice husks. Thus dust
The rice husks to which soil adheres and which contains a large amount of water are then conveyed to a fermenter and composted.

Further, by supplying the exhaust air from the dryer into the fermentation tank, a temperature suitable for fermentation is obtained and the fermentation is promoted.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a rice husk discharging section 2 provided in a wind separator of the rice hulling apparatus 1 and a cyclone collector 4 provided in a rice husk storage 3 are connected via a fan 5 by a rice husk duct 6. As a result, the rice husks generated in the rice hulling process are transferred to the cyclone collector 4 by the fan 5, separated from the transfer air, and temporarily stored in the rice husk storage 3.

Next, the dust collector 7 will be described. The dust collector 7 forms a water tank 8 at the bottom and forms a dust removing chamber 9 above it, and an annular endless conveyor 10 is provided below the dust removing chamber 9.
Be installed horizontally. The transfer surface of the conveyor 10 is not in a mesh shape so that rice husks do not leak (including a so-called porous surface), and is rotated by a roll 11 on the transfer start side and a roll 12 on the transfer end side (motor not shown). Further, the transport start end side of the annular endless conveyor 10 is connected to the bottom of the rice husk storage 3 by the supply screw conveyor 16, and the transport end side is formed slightly higher and projected outside the dust removing chamber 9 so that the annular endless conveyor 10 A pair of guide plates 13 are provided upright on both sides along the transport direction so as not to scatter the rice husks into the water tank 8. Furthermore, above the annular endless conveyor 10,
A hopper-shaped flow-down plate 14 is horizontally installed so as to guide all the water sprayed from a shower pipe described later between the pair of guide plates 13.
Instead of standing up the pair of guide plates 13, the annular endless conveyor 10 may be a curved conveyor composed of multiple conveyor pans.

A shower pipe 15 having a large number of fountain ports is arranged above the dust removing chamber 13, and water is supplied from the water tank 8 to the shower pipe 15 via a drain pipe 17, a pump 18 and a water intake pipe 19.

The transport end of the annular endless conveyor 10 is
Stirring screw conveyor 20, bucket elevator 2
Fermentation tank 23 through 1 and feeding screw conveyor 22
It is connected to the upper supply port. The stirring screw conveyor 20 is provided with a fermentation bacterium tank 31 for adding a fermentation bacterium as a fermentation accelerator. The fermenter 23 has a heat insulating structure, a rotating diffusion plate 24 is provided at the top, a discharge screw conveyor 25 is provided horizontally at the bottom, and a stirring blade 26 is appropriately provided upright inside. Further, the bottom of the fermenter 23 is made into a porous wall and the lower part thereof is formed as a blower chamber 27, and this blower chamber 27 is connected to a blower fan 29 of a dryer 28 in the drying step by a blower pipe 30.

The specific operation of the above embodiment will be described below. When the dust-containing air supplied into the dust removing chamber 9 comes into contact with the shower water discharged from the shower tube 15, the dust and soil in the dust-containing air is taken into the shower water to become dirty water. It flows down along the flow-down plate 14 and drops onto the annular endless conveyor 10. At this time, since a constant flow rate of rice husks is conveyed from the rice husk storage 3 to the annular endless conveyor 10 by the supply screw conveyor 16 in a substantially constant layer thickness, the waste water is filtered by passing through the rice husk layer. (Ro) It will be passed. In other words, dust in wastewater
Shower water is purified by attaching soil to rice husks,
Further, since the water is passed through the mesh-like conveyor surface and is returned into the water tank 8, the water tank 8 is relatively free from dirt and does not cause a bad odor. In addition, the pair of guide plates 13 prevents the chaff on the conveyor 10 from spilling into the water tank 8. Some fine dust and soil leaked from the mesh of the conveyor 10 fall into the water tank 8 without adhering to the rice husk, but are sucked into the water intake pipe 19 and supplied to the shower pipe 15 to be supplied to the rice husk as shower water. You get the chance to sprinkle it a few times and get it attached.

Thus, the rice husk containing sludge such as dust and soil and containing a large amount of water (about 60%) is supplied from the terminal end of the annular endless conveyor 10 to the stirring screw conveyor 20 and then from the fermentation tank 31. The rice husk, the sludge and the fermenting bacterium are sufficiently agitated while being conveyed while the fermenting bacterium is being added, and the water content of the rice husk is also homogenized.

The rice husks discharged from the stirring screw conveyor 20 are charged into the fermentation tank 23 through the bucket elevator 21 and the charging screw conveyor 22 and spread while being diffused by the diffusion plate 24. Then, the hot exhaust air (40 to 60 ° C.) of the dryer 28 and the stirring action of the stirring blades 26 enable rapid composting. When the rice husks already composted are discharged from the fermentation tank 23, a part of the rice husks can be left as a fermentation accelerator.

[0017]

As described above, according to the present invention, since the shower water of the wet dust collector is filtered by the rice husks, the sludge is not accumulated in the water tank, and therefore there is no bad odor and the sludge treatment is unnecessary. . In addition, since the rice husks that have become sludge and have a high water content are composted in a fermenter, the rice husks that have been difficult to treat can be effectively used.

In addition, since the waste heat of the dryer is supplied to the fermenter, it can be used to promote composting without wasting energy.

[Brief description of drawings]

FIG. 1 is an overall schematic view of an embodiment of the present invention.

FIG. 2 is a schematic sectional view showing a dust collector in a conventional grain drying and preparing facility.

[Explanation of symbols]

 1 Rice hulling device 2 Rice husk discharge part 3 Rice husk storage 4 Cyclone collector 5 Fan 6 Rice husk duct 7 Dust collector 8 Water tank 9 Dust removal chamber 10 Annular endless conveyor 11 Roll 12 Roll 13 Guide plate 14 Falling plate 15 Shower pipe 16 Supply screw conveyor 17 Drain Pipe 18 Pump 19 Intake Pipe 20 Stirring Screw Conveyor 21 Bucket Elevator 22 Input Screw Conveyor 23 Fermenter 24 Diffuser 25 Discharge Screw Conveyor 26 Stirring Blade 27 Blower Chamber 28 Dryer 29 Exhaust Fan 30 Blower Pipe 31 Fermentation tank

Claims (2)

[Claims] 1. A water tank is formed at the bottom, and a dust removing chamber provided with a dust-containing air inlet and a clean air exhaust port is formed above the water tank, and a shower water supply device connected to the water tank is provided above the dust removing chamber. In the dust collector in the grain drying and preparation facility provided, a conveyor for transporting rice husks having a substantially constant layer thickness is horizontally installed in the dust removing chamber, and the shower water is passed through the rice husk layer to provide water inside the water tank. In order to recirculate to, the bottom surface of the conveyor is formed in a mesh, further, while the transfer start end side of the conveyor is connected to the rice husk storage, the transfer end side of the conveyor is connected to a fermenter for compost production, Dust collector in a grain drying and preparation facility. 2. A dust collector for a grain dryer according to claim 1, wherein an exhaust pipe of a dryer is connected to the fermentation tank.