JP6465455B2 - Dust collector in country elevator - Google Patents

Description

  The present invention relates to a large-scale grain drying adjustment storage facility (country elevator), and more particularly to a dust collector in a country elevator.

Conventionally, country elevators are well known (see, for example, Patent Documents 1 and 2).
This type of country elevator will be described with reference to FIG. A hopper 3 for receiving grain from the producer is provided, and a cargo receiving / rough selection facility 2 for removing miscellaneous impurities, a plurality of grain dryers 10 for drying ginger, etc., and selection of dried rice after drying And a preparation facility 6 provided with a rice grinder 7 for removing the crushed rice after the selection, a shipping facility 8 provided with a brown rice tank 9 and the like. In addition, a machine room building 1 for storing the respective facilities is provided, and a silo row 11 including a plurality of silos that store rice bran and the like is installed in the vicinity of the machine room building 1. In addition, a rice husk tank 12 is erected in the vicinity of the rice huller 7 and a dust collector 13 is provided in the vicinity of the plurality of grain dryers 10 outside the machine room building 1.

  The rice husk tank 12 is a steel plate tank that stores rice husk generated in a large amount when the dehulling process is performed by the rice huller 7. As this type of rice husk storage facility, there is known a rice husk storage which is a building for storing rice husks described in Patent Documents 3 and 4, but there is a problem of high costs due to the recent trend of rising construction costs. Steel plate tanks are being adopted.

The dust collector 13 is a facility that collects dust generated from the grain dryer 10 and the cargo receiving / rough selection facility 2. This type of dust collector has a wet or dry treatment method, and both of them have high construction costs and equipment costs. Furthermore, regular maintenance is necessary, and in the case of wet, sewage treatment is expensive. In the case of dry, sewage treatment is unnecessary, but the initial investment is higher than that of wet.

JP-A-5-301052 JP 2004-321064 A JP-A-6-319931 JP-A-10-76169

  Then, an object of this invention is to provide the dust collector in the country elevator which can hold down construction cost.

In order to achieve the above object, the present invention provides:
A steel husk tank with a rice husk inlet at the top and a rice husk outlet at the bottom is surrounded by a cylindrical outer wall and dust settles in the space formed between them. And connecting the other end of the dust collection duct connected to a grain dryer or a coarse sorter through a dust collecting fan to the cylindrical portion of the cylindrical outer wall, and a lower portion of the dust settling chamber Is provided with a top plate at the upper end of the cylindrical outer wall, and an exhaust port communicating with the dust settling chamber is opened at the center of the top plate.

  In the present invention, it is preferable to provide a dust extraction opening in the dust collection chamber.

  Since the dust collector in the country elevator of the present invention surrounds the rice husk tank made of steel and becomes a dust collector, the installation area is reduced compared with the case where the dust collector and the rice husk tank are individually provided, and the construction period And construction costs are reduced. Moreover, since the exhaust port of the dust collector is relatively high (over about 20 meters), even if extremely fine dust is discharged, it will not be scattered around the facility.

The perspective view of the dust collector in embodiment of this invention. The partially broken front view of the dust collector of FIG. AA sectional view taken on the line. BB sectional drawing. The top view which shows the conventional country elevator.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a dust collector in a country elevator according to an embodiment of the present invention, FIG. 2 is a partially broken front view of the dust collector of FIG. 1, and FIG. FIG. 4 is a cross-sectional view taken along line AA, and FIG. 4 is a cross-sectional view taken along line BB.
The rice husk tank 14 according to the embodiment of the present invention is a tubular body made of a steel plate having a height of 16 meters and a diameter of 7 meters, and the upper wall 15 is charged with a rice husk connected to a rice husk duct (not shown). While providing the opening 16, a bottom wall 17 is provided about 5 meters above the lower end of the rice husk tank 14, and a plurality of discharge ports (not shown) are provided in the bottom wall 17. The space is designated as a rice husk shipping room 18.

In order to surround the entire rice husk tank 14, an outer wall body 19 made of a steel plate tubular body having a height of 23 meters and a diameter of 11 meters is provided. A pair of entrances 20a and 20b communicating with the rice husk shipping chamber 18 are provided symmetrically at the bottom 19b (skirt portion) of the outer wall body 19, and a shutter is provided at each of the entrances 20a and 20b.

A space formed between the rice husk tank 14 and the outer wall body 19 is a dust settling chamber 21. That is, the dust settling chamber 21 formed between the cylindrical body portions of the rice husk tank 14 and the outer wall body 19 is formed in a standing sleeve shape having a space with a width of 2 meters. Further, a space of 2 meters is formed between the upper wall 15 of the rice husk tank 14 and the top plate 19a of the outer wall 19, and a circular exhaust port 22 is provided at the center of the top plate 19a above the rice husk tank 14. Opened.

  A duct header 24 in which the other end portions of a plurality of dust collecting ducts 23 connected to a grain dryer, a coarse sorter, and a dust collecting fan are connected to the cylindrical portion of the outer wall body 19 in a tangential manner. (See FIG. 4), the dust air transported by the dust collection duct 23 is formed to be discharged into the dust settling chamber 21. A plurality of duct headers 24 may be provided at equal intervals as necessary.

  The bottom of the dust settling chamber 21, that is, below the position of the bottom wall 17 of the rice husk tank 14, is not provided with a pair of dust collecting chambers 25 with the rice husk discharge chamber 18 interposed therebetween (see FIG. 3). Dust that settles inside is stored in the dust collection chamber 25. Each dust collection chamber 25 is provided with a dust outlet 26 and a door 27 for opening and closing the dust outlet 26.

Since an exhaust port 22 is opened in the top plate 19a of the outer wall body 19, a rain gutter 28 for discharging rain water collected on the upper wall 15 of the rice husk tank 14 to the outside of the outer wall body 19 may be provided (see FIG. 2). ).

As described above, according to the embodiment of the present invention, exhaust air containing dust discharged from a plurality of grain dryers, coarse separators, etc. is collected via a dust collecting fan (not shown). It is conveyed by the duct 23 and discharged from the duct header 24 into the dust settling chamber 21. The dust-containing air in the dust settling chamber 21 is centrifuged while being swung along the dust settling chamber 21 by centrifugal force, and the dust is gravity settled. The dust-containing air further rises and collides with the top plate 19a, and the dust sinks due to inertial force, while the clean air is exhausted from the exhaust port 22 to the outside of the machine.

  The wind speed of the dust-containing air rising in the dust settling chamber 21 is about 0.5 meters per second, and the dust-containing air stays in the dust settling chamber 21 for about 10 seconds.

The dust that settles in the dust sedimentation chamber 21 is accumulated in the pair of dust collection chambers 25 and is appropriately discharged from the dust outlet 26 in the rice husk shipping chamber 18.

  The present invention forms a dust settling chamber by surrounding an outer wall body around a rice husk tank in a country elevator, so that it is not necessary to separately provide a dust collecting device, reducing the installation area and reducing the construction cost and running cost. It can be greatly reduced and is extremely useful.

DESCRIPTION OF SYMBOLS 1 Machine room building 2 Receipt receiving and rough selection equipment 3 Receipt hopper 4 Rough selection equipment 5 Fine selection equipment 6 Preparation equipment 7 Peeler 8 Shipping equipment 9 Brown rice tank 10 Grain dryer 11 Silo row 12 Rice hull tank 13 Dust collector 14 Rice hull tank DESCRIPTION OF SYMBOLS 15 Top wall 16 Rice husk inlet 17 Bottom wall 18 Rice husk shipping room 19 Outer wall body 19a Top plate 19b Skirt part 20a, 20b Entrance / exit 21 Dust settling chamber 22 Exhaust outlet 23 Duct 24 Duct header 25 Dust collection chamber 26 Dust outlet 27 Door 28 Rain gutter

Claims (2)

Surrounding the periphery of a steel husk tank made of steel plate with a rice husk inlet at the top and a rice husk outlet at the bottom with a cylindrical outer wall, the space formed between them is a dust settling chamber, the cylinder One end of a dust collecting duct connected to a grain dryer or a coarse sorter is connected to a cylindrical portion of the outer wall through a dust collecting fan, and the lower part of the dust settling chamber serves as a dust collecting chamber. On the other hand, a dust collector in a country elevator, wherein a top plate is provided at the upper end of the cylindrical outer wall, and an exhaust port communicating with the dust settling chamber is opened at the center of the top plate. The dust collector in a country elevator according to claim 1, wherein a dust extraction opening is provided in the dust collection chamber.

Images