JPS5912545Y2 - Suction type grain dryer - Google Patents

Description

[Detailed explanation of the invention] This invention is designed to prevent the grains from being circulated before drying them with hot air. This relates to a suction-type grain drying device that has been improved so that it can be discharged out of the machine all at once without leaving any traces.

Conventionally, a hot air blower frame and a hot air exhaust frame are arranged alternately, a storage chamber is provided in the upper part of a certain ventilation drying room, and a grain collection room is provided in the lower part, and the hot air blower frame is equipped with a heat generator. In a suction type drying device that is configured to communicate with the grain collecting room, the suction air flows from the grain collecting room into the hot air blower frame, passes through the grain flow path, exits from the hot air exhaust frame to the outside of the machine, and in the meantime Along with the wind, fine debris such as dust mixed in the grain is dispersed outside the machine.
However, the amount of dust released outside the machine by the end of the drying process is extremely small. Therefore, during the grain discharge process after the drying process, dust removal equipment is used to remove dust from the grains. ing.

In addition, grains are relatively poorly sorted during harvesting, and large contaminants such as straw waste and cut straw cannot pass through the ventilation mesh of the hot air blower frame and hot air exhaust frame, so they remain inside the machine. This is one of the causes of uneven drying because the grains do not fall evenly.

Therefore, in this invention, a shirt flap that can be opened and closed is installed at the lower end of the hot air exhaust pipe of the suction drying device, and when the shirt flap is opened, the suction air generated by the suction exhaust machine is released without passing through the grain flow path. By constructing the grain collecting room so that it can pass directly into the hot air exhaust frame, dust and foreign substances that are generated when grains are delivered from the ventilation drying room to the grain collecting room by a delivery device such as a rotary valve can be removed. This is a suction type grain drying device and device that allows dust to be completely removed by this device, without the need for a separate dust removal device as in the past. This is what we are trying to provide.

An embodiment of this invention will be described below based on the drawings.
1 is a main body of a suction type grain drying device, and this main body 1 has hot air blowing frames 2 and hot air exhaust frames 3 arranged alternately.
, a ventilation drying chamber 5 in which a plurality of rows of grain channels 4 of the same width are formed between the three, and a storage chamber 6 integrated in the upper part of the ventilation drying chamber 5.
Also, there is a grain collection room 7 integrated in the lower part of the ventilation drying room 5.
It is structured by.

The lower end of the hot air blowing frame 2 communicates with the grain collecting room 7, and the lower end of each hot air exhaust frame 3 is equipped with a shirt holder 8 that can be opened and closed and rotates around a shaft 9. When opened, the hot air exhaust frame 3 and the grain collection chamber 7 are placed in communication.

The lower end of the grain flow path 4 communicates with the grain collecting chamber 7 via the rotary valve 10, and the grains fed into the grain collecting chamber 7 by the rotary valve 10 after ventilation drying are transferred to the bottom of the grain collecting chamber 7. A screw conveyor 11 installed horizontally at the top and a screw conveyor 12 connected to the screw conveyor 12 are used to transfer the waste to an elevator 13 for loading and circulation, lift it up, carry it over from the upper discharge end to a carry-in conveyor 14, and return it to the storage chamber 6. It has become so.

In the figure, 15 is a heat generator installed in the grain collecting room 7, and 16 is a suction exhaust machine connected to the rear end of the hot air exhaust frame 3.

Since this device has the above-mentioned structure, if the lower end of the hot air blower frame 3 is closed off with the shirt shutter 8, the suction air generated by the suction exhaust fan 16 will flow from the grain collecting room 7 to the hot air blower frame. 2, passes through the grain flow path 4 and exits from the hot air exhaust frame 3 to the outside of the machine, at which time the grains in the grain flow path 4 are ventilated and dried.

However, when the shirt shutter 8 is switched to the open state, the suction air is subjected to resistance from the grain layer in the grain flow path 4, so that almost no air passes from the hot air blower frame 2 to the hot air exhaust frame 3, and it is directly passed from the grain collecting room 7. If the grains are circulated in this state, ventilation drying will hardly be performed, but the grains delivered from the rotary valve 10 will flow into the grain collection chamber 7.
When the grains fall, they are exposed to the suction air flowing from the collection chamber 7 into the hot air exhaust frame 3 and are air-selected, and most of the dust and foreign matter other than the grains are discharged to the outside of the machine.

As described above, according to this invention, by configuring the shutter 8 to freely open and close the lower end of the hot air exhaust frame 3, normal ventilation drying or wind screening can be performed as desired, and air selection can be performed before ventilation drying. When the grains are fed out from the ventilation drying room 5 to the grain collection room 7 by the feeding device of the rotary valve 10, the grains can be fed out from the ventilation drying room 5 to the grain collecting room 7 by the feeding device of the rotary valve 10. By air sorting the generated dust and other impurities and discharging them out of the machine all at once, clean grains are obtained, and at the same time, the resulting clean grains are air-dried to ensure uniform grain circulation. It has many practical effects, such as eliminating uneven drying and eliminating the need to dry impurities, thereby reducing unnecessary fuel costs, making it extremely valuable as a suction-type grain dryer. .

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view of an embodiment of this invention, and FIG. 2 is a longitudinal sectional side view thereof. 1...Main body, 2...Hot air fume frame, 3.
... Hot air exhaust frame, 4 ... Grain flow path, 5.
...Ventilated drying room, 6...Storage room, 7...
...grain collection room, 8...shaft, 9...
...Shaft, 10...Rotary valve, 11, 1
2...Screw conveyor, 13...Elevator, 14...Carry-in conveyor, 15...
・Heat generator, 16... Suction exhaust fan.

Claims (1)

[Scope of utility model registration request] A hot air blowing frame and a hot air exhaust frame connected to a suction/exhaust fan are arranged alternately, and a storage chamber is installed in the upper part of a ventilation drying room, and a grain collection room equipped with a heat generator is installed in the lower part. , the hot air blowing frame is communicated with the grain collecting chamber, a shutter which can be opened and closed is installed at the lower end of the hot air exhaust frame, and the lower end of the grain flow path is communicated with the grain collecting chamber via a rotary valve. A suction type grain drying device characterized by: