JPH073261Y2 - Grain dryer dust extractor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a waste dust device of a circulation type grain dryer in which a grain distribution device at an upper part of a storage tank is abolished.

<Prior art> Conventionally, a storage tank is placed on the upper part of the drying section, and a bucket type grain machine that circulates grains from the lower section of the drying section to the upper section of the storage section is provided, and the upper wheel adjusting unit of the grain rotating machine is rotated. When the grain is thrown into the storage tank, the drier that directly transfers the grain into the storage tank by the force of the buckets has a smaller specific gravity than the grain. It was supposed to be deposited.

<Problems to be solved by the device> The dust collected in the vicinity of the above-mentioned grain machine has a low grain density in the front part of the storage tank, and grain flowability and dry air passage are different from other parts. However, drying unevenness was caused.

Therefore, an object of the present invention is to provide a circulating-type grain dryer that avoids the above-mentioned drying unevenness as much as possible and efficiently discharges dust.

<Means for solving the problem> A return passage communicating with the lower part of the toothpicker is provided from the lower part of the throwing port of the bucket type grainer that circulates grains from the lower part of the drying section to the upper part of the storage tank, and the return passage Provide a dust device.

<Example> In the figure, 1 is a grain dryer, and a storage tank 3 is placed above the drying unit 2 and a toothpicker 4 for circulating grains from the lower portion of the drying unit 2 to the upper portion of the storage tank 3 is attached. . A hot air passage 7 communicating with an intake pipe 6 containing a furnace 5 is provided at the center of the drying section 2, and exhaust pipes 8 containing exhaust fans (not shown) are provided on both sides.
An air exhaust passage 9 communicating with is provided, and a grain flow passage 10 is formed between the hot air passage 7 and the exhaust air passage 9. The upper portion of the grain flow passage 10 communicates with the upper storage tank 3, and the lower portion has A rotary shutter (12) is provided that extends downward by a fixed amount evenly in the front-rear direction. Below the rotary shutter 12 is provided a lower conveyor 11 for transferring grains to the toothpicker 4 provided at the front of the machine.

The toothpicker 4 has a flat belt 1 between the adjusting wheels 13 and 13 'vertically mounted.
It is a bucket type in which 4 is hung around and a bucket 15 is attached to the flat belt 14, and the bucket 15
With the rotation of, the grains in the bucket 15 are directly charged and accumulated in the storage tank 3 through the spouting port 16. A return passage 17 that communicates with the lower portion of the picking machine 4 from the lower portion of the direction mouth 16 is provided
An outside air suction port 18 is provided on one side of 17. For other measurements corresponding to the outside air intake port 18 of the return passage 17, an intake pipe 20 communicating with a dust collector 19 installed at a proper position outside the storage tank 3 is exposed.

Since the present invention is configured as described above, each unit is started, and although not shown, grain is supplied from the hopper attached to the grain cutter 4 and the like and stored in the grain flow path 10 and the storage tank 3. At that time, the dust that is mixed in the grain that is directly input from the spout 16 at the upper part of the grain machine 4 has a lower specific gravity than the grain, and the throwing distance becomes shorter, and the grain that falls into the return passage 17 falls. Many will be mixed in. Then, the grains falling in the return passage 17 pass through the suction pipe 20 from the outside air suction port 18 and the dust collector 19
The mixed dust is wind-selected by the sorting wind (arrow indicated by a broken line in FIG. 1) toward and is stored in the lower part of the grain processor 4. The dust selected by wind is transferred to a designated disposal site outside the machine by the dust collector 19.

After storing a predetermined amount of grains in the storage tank 3, the furnace 5 and the exhaust fan are started to start the drying operation. The suction air from the exhaust fan flows from the intake cylinder 6, is heated by the furnace 5 and flows into the hot air furnace 9, and after drying the grain in the grain flow path 10,
The air is discharged to the outside of the machine through the exhaust passage 9 and the exhaust pipe 8. The grain subjected to the drying action in the grain flow path 10 is fed downward by the rotary shutter 12, circulated to the upper part of the storage tank 3 by the lower conveyor 11 and the toothpicker 4, and is again dried. Further, when the grain is put into the storage tank 3 from the toothpicker 4, the dust mixed with the grain and dried to have a smaller specific gravity than the grain falls into the return passage 17 as described above. Often, the dust is discharged to the outside of the machine more efficiently than the dust collector 19.

<Effect of the Invention> As described above, the present invention has a return passage communicating from the lower part of the throwing port of the bucket type grain lowering machine to the lower side of the toothpicking machine. It is possible to efficiently discharge light dust, and to prevent drying unevenness that is affected by dust that is concentrated and accumulated on the grain machine side of the dryer.

[Brief description of drawings]

FIG. 1 is an example of implementing the present invention, FIG. 1 is a front view of a dryer having a cross section of part 1, and FIG. 2 is a side view of the same. 2 ... Drying part, 3 ... Storage tank 4 ... Toothpicker, 13, 13 '... Adjusting wheel 14 ... Flat belt, 15 ... Bucket 16 ... Spouting mouth, 17 ... Return passage 18 ... … Outdoor air intake, 19 …… Dust extractor 20 …… Intake pipe

Claims (1)

[Scope of utility model registration request] 1. A bucket type grain cultivator for mounting a storage tank on an upper part of a drying section and circulating grains from a lower part of the drying section to an upper part of the storage tank, and rotating an upper wheel adjusting section of the toothpicker. In a dryer that directly conveys grain into the storage tank by the momentum of the bucket, a return passage that connects the lower portion of the above-mentioned toothpicker machine to the lower side of the toothpicker machine is provided, and a dust discharge device is provided in the return passageway. Machine.