JPS5930983B2 - Grain ventilation drying equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in grain ventilation drying equipment and equipment.

In general, circulation type ventilation drying equipment is operated by a method in which a drying chamber consisting of a flowing grain flow path is installed upright, and hot air is caused to flow in the lateral direction in the drying chamber to dry the grains.

According to the present invention, a horizontal drying chamber is formed by arranging a ventilation guide plate and a perforated wall disk that swings in a vertical manner in a vertical relationship, and a large number of air permeable holes bored in the disk allow the drying chamber to be placed vertically. The grains in the drying chamber are injected with hot air to dry them, and the grains are transported by flight to an annular grain collection groove provided on the peripheral edge of the disc, and the grains in the grain collection groove are further removed from the grain collection groove. It is an object of the present invention to develop and provide a device which has a simple structure and which performs a high-performance fluidized bed drying function in which drying material is discharged to the outside by a scraping plate of a rotary scraping device provided inside the machine.

The present invention will be described with reference to embodiment figures.

Reference numeral 1 denotes a grain chamber consisting of a hopper-shaped cylinder;
This is a grain ventilation drying device in which a ventilation drying section 2 is disposed at the lower part of the grain drying section 2, and an elevator 3 is installed upright on one side of the ventilation drying section 2 to integrally form a grain circulation process.

The grain material 1 is provided with a supply port in the upper part and connected to the discharge part of the elevator 3 via a downflow gutter 4, and a circular plate is provided around the grain discharge port 5 provided in the lower part of the hopper-shaped cylinder. A ventilation guide plate 6 of the shape of the shape is installed horizontally, and the peripheral edge of the guide plate 6 is extended to near the side wall γ of the fuselage, and an annular ventilation window 8 is provided between it and the side wall 7. The exhaust air for drying inside the drying chamber 9, which will be described later, is collected and removed through the exhaust window 8 by an exhaust fan 10 provided on the side wall 7. is rotatably erected, and a porous wall disk 12 provided with a large number of ventilation holes 12a is attached to the vertical axis 11.
The drying chamber 9 is connected between the circular plate 12 and the guide plate 6.
A rocking device 13 is formed at a lower position of the disc 12 and performs a rotary rocking motion or a rotary rocking motion accompanied by an up-and-down motion.
is provided and connected to the vertical shaft, and 14 is a hot air generator.

Further, an annular grain collecting groove 1 is provided at the peripheral edge of the porous wall disk 12.
5 and a discharge port 1 provided on one side of the grain collecting groove 15.
6 and the supply section of the elevator 3 are connected by a discharge gutter 17, and a ratchet mechanism 18 is attached to the vertical shaft 11 located above the disk 12, and a plurality of horizontal support rods 19 are connected to the mechanism 18. At the same time, a scraping plate 20 is attached to the tip of each support rod 19 to integrally form a rotary scraping device, and an extension shaft fitted into the discharge port 5 of the vertical shaft 11. A conical grain rectifier 22 is attached to the section 21.

23 is the supply hopper of the elevator, 24 is the switching valve of the downflow gutter,
25 is a grain outlet.

With the above-mentioned configuration, when the raw paddy rice is put into the supply hopper 23 of the elevator 3 and the hot air generator 14 is ignited to start the device, the paddy rice is fried and supplied to the grain room 1. By the reciprocating rotation of the grain straightener 22, the unhulled rice flows down from the grain discharge port 5 onto the porous wall disk 12 provided in the lower drying chamber 9 in an evenly distributed manner.

In the drying chamber 9, the unhulled rice flows centrifugally on the plate surface by the reciprocating rotation of the disk 12, forming a flat grain layer, which gradually moves outward due to the centrifugal force. from the peripheral edge of the porous wall disk 12 to the annular collecting groove 15.
They flow down to each other.

During this time, the drying hot air generated by the hot air generator 14 of the ventilation drying section 2 is directed upwardly through the numerous ventilation holes 12a of the disk 12 by the suction action of the exhaust fan 10 provided on the side wall 7. The air blows out and flows laterally along the ventilation guide plate 6 at the top of the drying chamber 9, and is exhausted outside the machine via the ventilation window 8 and the exhaust fan 10.

Then, by the blowing action from each of the through holes 12a, the unhulled rice in the grain layer is repeatedly moved up and down or reversed in the drying chamber 9, and subjected to hot air rotation.

In addition, the unhulled rice that has flowed down into the grain collecting groove 15 is moved to the discharge port 1 by a scraping plate 20 rotating in the groove by a ratchet mechanism 18.
The waste is collected on the side 6 and flowed down the discharge gutter 17 to be taken out of the machine.

Further, the drying action of the grain layer increases the amount of hot air to such an extent that the unhulled rice floats, and also increases the rotational speed of the disc 12 so that the hot air blowing out from the through holes 12a becomes spiral. It is also possible to perform so-called fluidized bed drying by rotating and drying the grain layer by jetting it toward the outer periphery.

Although the perforated wall disc 12 is shown as a flat plate attached to the vertical shaft 11, it may be formed on a vessel board with its outer peripheral edge raised.

The air-permeable through holes 12a are appropriately selected from round holes, oblique holes, strip holes, and the like.

In this way, the grain drying apparatus of the present invention can appropriately select and carry out various drying operations with varying flow rates depending on the various conditions of the raw material grain, and since the drying chamber is formed in a horizontal structure, The height of the dryer can be lowered as much as possible to make the entire device more compact, and the structure of the device can be simplified to reduce the causes of failure, and its handling is extremely easy. This has the effect of allowing dry grain to be mass-produced reliably, smoothly and quickly.

[Brief explanation of the drawing]

The drawings are illustrations of embodiments of the present invention. Fig. 1 is a side sectional view of the drying device, Figs. 2 and 3 are sectional views showing its swing mechanism, Fig. 4 is a perspective view of the perforated wall disc, and Fig. 5 is an annular collection of the drying device. A perspective view of the grain groove, and FIG. 6 is a perspective view showing the main part of the rotary scraping device. 1... Grain room, 2... Ventilation drying section, 3
...Elevator, 4...Draining gutter, 5...
...Grain discharge port, 6...Ventilation guide plate, I...
...Airframe side wall, 8...Exhaust window, 9...
...Drying room, 10...Exhaust fan, 11...
・Vertical axis, 12... Porous wall disk, 12a...
・Perforation hole for ritual air, 13... Rocking device, 14...
... Hot air generator, 15 ... Grain collecting groove, 16.
...Discharge port, 17...Discharge gutter, 18...
... Ratchet mechanism, 19 ... Horizontal support rod, 2゛0 ... Scraping plate, 21 ... Extension shaft section, 22 ...・Grain rectifier, 23... Supply hopper, 24... Switching valve, 25...
・Grain outlet.

Claims (1)

[Claims] 1. In a drying device in which a ventilation drying section equipped with a porous wall disk and a hot air generator is provided at the lower part of a grain chamber consisting of a hopper-shaped cylinder with a grain discharge port at the lower end, the grain discharge port of the grain chamber A disc-shaped ventilation guide plate is installed around the guide plate, and an annular ventilation window is provided at the peripheral edge of the guide plate, and numerous ventilation holes are provided on the plate surface below the ventilation guide plate. A drying chamber is formed between the two plates by disposing a perforated wall disc provided with holes and connected to a rocking mechanism that swings in a rotational manner, and an annular collection is provided at the peripheral end of the perforated wall disc. A grain groove is provided, and a scraping plate connected to a rotary scraping device is provided inside the grain collecting groove, and the grain in the groove is scraped out by the scraping plate and discharged to the outside of the machine. Grain ventilation drying equipment.