JPS5930878Y2 - Grain dryer dust removal equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to the improvement of a dust removal device for a grain dryer.The grains supplied to the grain dryer are often mixed with a large amount of foreign matter, and this foreign matter is removed from the grain dryer. They had defects such as blocking the ventilation of drying air, causing dry spots on the grains, and getting stuck in rotating parts of the grain circulation process, causing failures.

Conventionally, the pressure-feeding grain dryer equipped with an air blower was
No. 3-3187, a dust evacuation device in which an intake dust exhaust fan is installed at the top of the grain bin of a dryer, and the dust exhaust fan is connected to a spiral transfer body horizontally suspended above the inside of the grain bin via a dust suction pipe, etc. It is known that when the above-mentioned dust evacuation device is used in a suction-type grain dryer equipped with an exhaust fan, the interior of the spiral transfer body, grain tank, etc. will be in a negative pressure state, so the dust evacuation fan will simply suck the dust out. If only this is done, the impurities mixed in the grains will not be separated properly, and the dust removal efficiency will not be improved because only the wind is absorbed.

The present invention solves the above-mentioned drawbacks by installing a dust removal device with a unique structure on the closed screw conveyor connected to the grain tank in the grain circulation process, thereby removing foreign substances mixed in from the grains being carried in or in the circulation process. The purpose of the present invention is to develop and provide a high-performance dust removal device for a grain dryer that efficiently absorbs and eliminates dry grains and reliably mass-produces high-quality dried grains at all times.

To explain the present invention with reference to the embodiment diagrams, in Figures 1 and 2, reference numeral 1 indicates a suction type ventilation dryer with a downstream type drying chamber installed inside, and a hot air chamber and an exhaust chamber arranged on both sides of the chamber. This is a grain dryer in which a grain tank 2 is mounted on the top of the drying section 1 to form a drying machine body 3, and an elevator 4 is erected on one side of the machine body 3 to form a grain circulation process. be.

゛Therefore, the dust removal device of the present invention is
A grain feeding port 6 with a grain disperser 5 suspended in the center of the earthen wall is connected to the discharge lower of the elevator 4 by a sealed screw conveyor 8, and a ventilation opening is provided in the lid body 9 of the conveyor 8. 1
0, and the screw conveyor 8 is provided with an agitation device 22 that prevents a plurality of iron strips, etc., from opening 1.
0, the cylinder end 1 of the dust suction cylinder 12 is inserted through the ventilation gap 11.
3 is fitted and fixed, and the base of the cylinder 12 is attached to the dust suction device 14.
The dust suction device 14 is integrally mounted on one side wall thereof, and a rotating electric motor 15 is mounted on the other side wall of the dust suction device 14.

In addition, a discharge screw conveyor 16 is installed horizontally at the bottom of the ventilation drying section 1 and is connected to the supply port 17 of the elevator 4, and 18 is an exhaust fan provided in the ventilation drying section 1, and 19 is a discharge screw conveyor 16 of the elevator 4. The supply hopper 20 is a dust outlet of the dust suction machine.

With the above-described configuration, the grains fed into the supply hopper 19 of the elevator 4 are conveyed from the discharge lower of the elevator 4 through the upper screw conveyor 8, flow down from the grain disperser 5 in a dispersed manner, and become grains. It is temporarily stored in tank 2.

Then, the grains flow down from the grain tank 2 into a lower drying chamber (not shown) to form a vertical grain layer, and are ventilated and dried by hot air at a predetermined temperature that passes laterally through the grain position. is,
The dried grains flow into the supply port 17 of the elevator 4 via the lower screw conveyor 16, are lifted by the elevator 4, and are returned to the grain tank 2 via the upper conveyor 8 for tempering.

During this time, the grain drying action of the ventilation drying section 1 is carried out by the drying machine body 3.
This is a so-called suction-type grain dryer in which the hot air in the hot air chamber passes through the grain layer of the grain chamber and is discharged from the exhaust chamber by the suction force of the exhaust fan 18 installed in the grain bin 2 of the dryer body 3. and the grain circulation process are respectively brought into a negative pressure state as appropriate.

Therefore, the present invention provides a lid portion 9 of a closed scree conveyor 8.
A ventilation opening 10 is provided in the screw conveyor 8 (see FIG. 3), an agitation device 22 is provided on the screw conveyor 8, and a dust suction tube 12 is attached to one side wall of a separately provided dust suction device 14.
In addition, an electric motor was attached to the side wall, and the dust suction tube 12 of the dust suction device 14 was fitted into the ventilation opening 10 of the screw conveyor 8 through the ventilation gap 11, so that it was integrally fixed.
Air from outside the machine flows into the gutter of the closed screw conveyor 8 through the ventilation gap 11, and a part of it is sucked into the grain tank 2, which is in a high negative pressure state, and flows into the grain tank 2. The inflowing airflow completely blocks the negative pressure resistance generated by the large exhaust fan 18 on the machine body 3 side from flowing into the conveyor 8 side, and the grains conveyed by the conveyor 8 are stirred by the stirring device 22. Since the foreign matter is suspended, this floating foreign matter is removed from the dust suction tube 1 installed at a close distance.
2, the dust is collected by the relatively small dust collector 14.
However, dust removal is carried out extremely reliably and smoothly.

Moreover, since the dust removal device is installed on the screw conveyor of the grain circulation process of the dryer, the dust removal action is performed each time during the circulation drying process several times, so that most of the foreign substances mixed in are removed and the above-mentioned It is possible to completely prevent drying spots and malfunctions of rotating parts, and it is possible to reliably mass-produce high-quality dried grains at all times.

In addition, the scope of utility model registration claims in paragraph (2) is (
(See Figure 2)
3, the upper part of the dust suction device can be stably fixed with the iron cylinder 21, and it is also possible to prevent rain and dew from entering through the opening, facilitating installation of the dryer body outdoors. effective.

In some cases, a plurality of the intake ports 23 are provided in the cylinder wall, and each intake port 23 is provided with an opening control valve.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a partially cutaway side view of a dryer, Fig. 2 is a sectional view of a dust removal device, and Fig. 3 is a perspective view of a screw conveyor equipped with an agitation device. be. 1... Suction type ventilation drying section, 2... Grain tank, 3... Drying machine body, 4... Lifting machine,
5... Grain disperser, 6... Grain feeder, 7
...Discharge port, 8... Sealed screw conveyor, 9... Lid, 10... Ventilation opening, 11...・Ventilation gap, 12...
...Dust suction cylinder, 13...Cylinder end, 14...
...Dust extractor, 15...Rotating electric motor, 16...
...Discharge screw conveyor, 17...
Supply port section, 18...Exhaust fan, 19...
Supply hopper, 20... Dust exhaust port, 21...
... Ventilation cylinder, 22... Stirring device, 23...
・Intake port.

Claims (2)

[Scope of utility model registration request] (1) In a drying device in which a grain tank is mounted on a suction type ventilation drying section equipped with an exhaust fan, and an elevator is installed on one side of the dryer body to form a grain circulation process, the discharge port of the elevator and the grain A ventilation opening is provided in the lid of the closed screw conveyor that communicates with the grain feeding port of the tank, an agitation device is provided on the screw conveyor, a dust suction cylinder is attached to one side wall of a separately provided dust suction machine, and Another dust removal device for a grain dryer, wherein an electric motor is mounted on a side wall, and a dust suction cylinder of the dust suction device is fitted into a ventilation opening of the screw conveyor through a ventilation gap to be integrally fixed. (2) The dust removal device for a grain dryer according to claim 1, wherein the ventilation opening is a ventilation cylinder having an intake port in its cylinder wall.