JPS5854634Y2 - Grain turning device in dryer - Google Patents

Description

[Detailed explanation of the invention] When drying grains flowing from top to bottom by passing hot air across them from left to right, the grains flowing down on the left side of the hot air inlet side, which is high temperature and low humidity, and the right side of the outlet side, which is low humidity and high humidity. There is a drawback that the grains become drier than the grains flowing down, and the grains do not dry evenly on both sides.

In particular, large dryers with long traversing distances of hot air have serious drawbacks.

The present invention aims to improve this.

To explain the embodiment shown in the drawings, reference numeral 1 denotes a vertically long drying chamber equipped with a fan 2 on the lower side and an exhaust port 3 on the other side of the upper side, and a perforated plate 4 such as a wire mesh or a punched iron plate inside. are arranged oppositely on the left and right to form a flow path 5 for grains such as paddy.
The hot air from the left to right hebana is traversed through the fan 2, and the waste air containing moisture is discharged to the outside of the machine from the exhaust port 3.

A discharge port 6 provided at the lower end of the flow path 5 is connected to a supply lower at the upper end via a grain lifting tube 8 to circulate the grains.

Reference numeral 9 denotes a grain feeding port provided at the lower part of the grain lifting cylinder 8, and the grain lifting spiral or packet conveyor inside the grain lifting cylinder 8 is not shown.

Further, a tempering tank may be provided between the upper discharge port of the grain lifting cylinder 8 and the supply lower, and dried grains may be stored in the tempering tank and circulated to the flow path 5.

Therefore, in the present invention, a part of the flow path 5 is divided into left and right chambers ab and a center chamber C by a partition wall 10 extending in a direction perpendicular to the hot air.

The upper half of the central chamber C has its front and rear walls 11, 12 tilted toward the center in a funnel-like manner, and communicates with a downwardly facing discharge pipe 13 in the shape of a rectangular tube in the lower half.

The front wall 14 of the upper half of the left ventricle a is perpendicular to the front wall of the lower half, and the rear wall 15 is inclined toward the front wall 14. Open the outflow port 16 facing the direction.

In addition, the front wall 17 of the upper half of the right ventricle is inclined toward the vertical rear wall 18 together with the rear wall of the lower half, and the lower half has an outlet 19 that is buttoned behind the discharge tube 13 and faces to the left. Open.

Several units of grain reversing devices each having the left and right chambers a, l) and the central chamber C as one unit are arranged in parallel in the front and back as shown in FIG. They are arranged in several levels, one above the other.

In the present invention, when the grains flow down from the top to the bottom in the flow path 5, hot air blows from the left perforated plate 4 to the right perforated plate 4, drying the grains. When the grains enter the upper half of the central chamber C, they gather in the center along the slopes of the front and rear walls 11 and 12 in the shape of a funnel, and pass through the downward discharge pipe 1 in the lower half.
3, it flows down.

The grains on the left hot air inlet side enter the upper half of the left chamber a, collect along the inclined rear wall 15 toward the front wall 14, and are discharged from the right-facing outlet 16 in the lower half of the medium firebox. It passes through the front of the cylinder 13 and flows out to the right side.

The grains on the hot air outlet side on the right side enter the upper half of the right ventricle, collect along the inclined front wall 17 toward the rear wall 18, and exit from the left-facing outlet 19 in the lower half of the central chamber through the discharge tube. It passes behind No. 13 and flows out to the left.

In the present invention, the grains flowing down the center of the flow path 5 enter the central chamber C, collect, and flow out into the downward discharge tube 13, and the grains are dried as they dry on the hot air inlet side, that is, on the left side. The grains gather in the left ventricle a and flow out to the right in front of the discharge tube 13, and the dried grains on the hot air outlet side, that is, the right side, enter the right ventricle and collect in the discharge tube 13. It flows out to the left behind.

In this way, the grains on the left side of the grains flowing down the center cross over to the right side, and the grains on the right side cross over to the left side, reversing the flow direction, and are blocked by the discharge tube 13 and do not mix with the grains in the center. The whole grain dries evenly.

In short, according to the present invention, inside the grains flowing down from above to below in the flow path 5 where the hot air crosses in the left and right direction,
Since the flow of grains flowing down on the left and right sides of the grains flowing down the center is reversed, the cross-sectional distance of the flow path 5 is formed to be large, resulting in the effect that a large amount of grains can be dried uniformly.

Note that if the partition wall 10 forming each chamber a, l), and c and its front and rear walls are made of perforated plates, hot air will cross within each chamber, thereby promoting drying.

[Brief explanation of drawings]

FIG. 1 is an overall longitudinal sectional front view of an embodiment of the present invention, FIG. 2 is an oblique view of the main part, and FIG. 3 is a partial longitudinal sectional front view. 1... Drying room, 2 is a fan, 3 is an exhaust port, 4 is a perforated plate, 5 is a flow path, 10 is a partition wall, 11, 14.17
is the front wall, 12゜15.18 is the rear wall, 13 is the discharge pipe, 16
．． 19 is the outlet.

Claims (1)

[Scope of Claim for Utility Model Registration] The inside of the grain flow path 5, which the hot air crosses in the left-right direction, is divided into left and right chambers a by a partition wall 10 extending in a direction perpendicular to the hot air. b and a central chamber C, and the lower half of the central chamber C is provided with a downward discharge pipe 13, and the lower half of the left chamber a is provided with a right-directed outlet 16 in front of the discharge pipe 13 or under the right ventricle. A grain inverting device for a dryer, in which each half has a leftward outlet 19 at the rear of a discharge pipe 13.