JPS6138385A - Ventilating device for cereal grain circulating drier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a ventilation device for a grain circulation dryer.

Problems to be Solved by the Invention While the grains in the tempering chamber are flowing down to the drying chamber at the bottom, the hot air generated by the burner is sucked into the exhaust fan and dried. In a circulation dryer that circulates the grains, if the grains are stored in the dryer without being discharged after reaching the target finishing moisture and finishing drying, the grains may be affected by the temperature or humidity of the outside air. Grain moisture may return to some extent.

When this returned moisture is re-dried using hot air from a burner, overdrying may occur due to the small amount of moisture transferred, and the occurrence of damaged kernels increases as the grains are circled.

Means for Solving the Problem This invention allows the grain to flow down from the upper tempering chamber (1) to the lower drying chamber (to the drying air inlet (3) on the negative side of this drying chamber and to the burner). In the grain circulation dryer, the dried grains are dried by hot air which is passed through the suction exhaust fan Φ) on the other side, and the dried grains are raised and circulated to the tempering chamber (2) by the grain raiser (6). The ventilation device is constructed of a drying shutter (7) that opens and closes the suction port (1), and a tempering shutter (9) that opens and closes the outside air inlet (8) in the upper part of the tempering chamber (1).

Function and Effect of the Invention When drying with hot air, open the drying shutter ■ of the drying air intake port (3), and open the regulating shutter C shutter (9) of the outside air intake port (8) at the top of the conditioning chamber (1). Quiet. The grain is in the conditioning room (1)
The dry air inlet (3
) and the burner (1) to the suction/exhaust fan O), and the grains are returned to the tempering chamber (I) by the grain raising machine 0 and dried while being circulated. can.

When the drying shutter ■ is closed and the tempering shutter (9) is opened, outside air enters the grains in the conditioning chamber (1) and drying chamber ( The inside is ventilated and suctioned by a suction/exhaust fan (○) for ventilation drying.

Therefore, since ventilation is distributed throughout the grains, ventilation drying can be performed without circulating the grains.

Embodiment In the illustrated example, the dryer has a drying chamber (20) in the upper part with a conditioning chamber (1) and the lower part with a grain collecting room OΦ, which are superimposed three-dimensionally. The grain hoist (■) is installed vertically on the side.

The lower end of the A grain machine [F1] communicates with the grain collection chamber 00, and the upper end communicates with the starting end of the transfer gutter l1l) provided at the upper part of the tempering chamber (1), and a part of the transfer gutter α0. Open the tempering chamber (1)
It communicates with

In the upper part of the grain collection room 0Φ, vertical drying chambers are formed between two left and right ventilation mesh plates, and are arranged in two rows. An air passage is formed between the mesh plates, and the air passage communicates with the drying air passage suction port (3) through a burner (2) provided at the front of the drying chamber (2).

In addition, air exhaust passages are formed between the ventilation net plates on the outside of the left and right drying chambers and the left and right side plates of the dryer. It communicates with the exhaust fan 6).

■ is a burner case with a burner ■ inside, and the front side of the burner case ■ is open to form the dry air inlet (3);
This suction port (3) is provided with a drying shutter ■.

The drying shutter ■ is a thin rectangular plate.

It consists of armor plates arranged diagonally on multiple sides, and is interlocked to open and close the shutter (2) by means of an operating lever (2) provided on the side of the burner case (2).

An outside air inlet (8) is opened in the upper part of the tempering chamber (1), and a tempering shutter (9) in the form of an armor plate having the same structure as the drying shutter (2) is provided in this inlet (8). The shutter (
9) and the operating lever 0 are connected by an operating wire 0, so that they are linked to close the refining shutter (9) when the drying shutter (2) is opened.

01.11 is a spring that always urges the thermal shutter (9) in the open direction. 00 is the discharge vibe, q'? ) is a control box.

In the case of hot air drying, operate the operating lever 0 to open the drying shutter (2) and close the tempering shutter (9). The grains in the tempering chamber (1) are passed through the drying chamber (■) while being
) and outside air flowing in from the drying air inlet (3) are sucked by the suction exhaust fan 6), and the grains are dried by ventilation across the drying room (21). The grain is collected into the grain raising machine) and transferred through the gutter ■ to the tempering room (1).
It is fed back and recycled and dried.

' In the case of ventilation drying, when the drying shutter ■ is closed using the operating lever ■ and the tempering shutter (0) is opened, the outside air enters the conditioning chamber from the outside air intake port (8) at the top of the conditioning chamber (1). (
D and the drying room (a suction exhaust machine 6
) for ventilation drying.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially cutaway perspective view. In the figure, code (1) is the conditioning chamber, (ri is the drying room, (3) is the drying air inlet, ni) is the vanina, ○) is the suction exhaust fan, (6)
is a grain raising machine, ■ is a drying shutter, (8) is an outside air intake port, (
9) indicates a thermal shutter.

Claims (1)

[Claims] While the grains are flowing down from the upper conditioning chamber (1) to the lower drying chamber (2), the drying air inlet (3) on one side of this drying chamber (2) is opened.
) and a burner (4) to the suction/exhaust fan (5) on the other side, and the dry grains are raised and circulated to the tempering chamber (1) by a grain raising machine (6). In the grain circulation dryer, there is a drying shutter (7) that opens and closes the drying air inlet (3), and an outside air inlet (8) in the upper part of the conditioning chamber (1).
) and a thermal shutter (9) for opening and closing.