JPH03186185A - Drier - Google Patents

Abstract

PURPOSE:To dry a small amount of cereals through utilization of a part of a dry passage by switching drying means between a state for ventilating over the entire route of the dry passage and a state for stopping ventilation for a part thereof. CONSTITUTION:A partition plate 12 for freely switching between states for ventilating and interrupting the upper half side of a dry passage 3 is provided at a position where a hot blast duct 4A is branched, thus freely conducting/ interrupting ventilation for the upper half of the passage 3. That is, when ventilation to the upper half of the passage 3 is stopped by the plate 12, cereals of half of capacity of the passage 3 are dried. If the stop of the ventilation of the upper half of the plate 12 is released, the entire route of the passage 3 is ventilated as usual, the cereals of the capacity of the passage 3 are dried. Thus, even if the quantity of the cereals is smaller than that to be dried by a drier, it can be suitably dried.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a drying path configured to allow cross-ventilation along a direction intersecting the direction of grain passage, and a method for blowing hot air through the drying path. The present invention relates to a dryer equipped with ventilation means.

[Conventional technology]

Conventionally, in this type of dryer described above, it has been configured to switch whether or not to ventilate the entire drying path.

[Problem to be solved by the invention]

Therefore, in the conventional configuration, if there is not enough grain to fill the entire drying path, drying cannot be performed, which is inconvenient.

To explain, if grains are present only in a portion of the drying path, hot air will blow through the drying path portion where grains are not present, making it impossible to perform desired drying. For this reason, if there is no grain to fill the entire drying path, drying must be interrupted or drying must be performed together with grains that do not currently need to be dried, which is inconvenient.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to make it possible to dry even a small amount of grain by using a part of the drying path.

[Means to solve the problem]

The dryer according to the present invention includes a drying path configured to allow cross-ventilation along a direction intersecting the direction of grain passage, and a clever ventilation means for blowing hot air through the drying path. , its characteristics Ij are as follows.

That is, the drying means can be configured to be able to freely switch between a state in which ventilation is conducted over one path of the drying path and a state in which ventilation is stopped for a portion of the drying path.

[For production]

In other words, when drying a large amount of drying material, the drying means can be switched between ventilating the entire path of the drying path and stopping ventilation to a part of the path. When drying a small amount of grain by ventilating it across the grain, by stopping the ventilation to that part, even if the grain is still in storage, it can be dried without blowing hot air. That's what I do.

〔Effect of the invention〕

As a result, even if the amount of grain is smaller than the amount that the dryer can dry at one time, it has become possible to properly dry the grain.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1 to 3, the dryer consists of a feeding screw conveyor (1) that transports fed grain across the top of the dryer, and a feeding screw conveyor (
A condensation tank (2) that temporarily stores the grain that is discharged downward while being transversely fed by 1), and a condensation tank (2) that intersects with the passing direction of the grain that is supplied downward from the condensation tank (2). A pair of left and right drying paths (
3) and a ventilation means (
・1), a set of four discharge rotary valves (5) that can freely adjust the amount of grain discharged from the lower end of the drying path (3), and grain discharged downward from the rotary valve (5). a heating section (8) comprising two: a discharge conveyor (6) that transports the grains to the outside of the machine; and a burner (7) that heats the air that is vented as hot air to the drying path (3).
It is composed of.

Although not described in detail, the air heated in the heating section (8) is sent to a hot air chamber (9) for stirring in order to remove unevenness in air density, and from the hot air chamber (9) , through a hot air duct (4A) attached along the lateral side of the drying path (3) at a location above the heating section (8);
The drying path (3) is ventilated as hot air.

The drying path (3) is formed of a net-like body so that the grains falling and supplied from the condensation tank (2) pass from above to below, and penetrates in the vertical direction. A pair is provided. In the vertical direction, the lower part is vented from the inside to the outside, and the upper part is ventilated from the outside to the inside. In other words, the grains passing through the drying path (3) are dried quickly on the hot air side and slow on the exhaust side. This makes it difficult for unevenness to occur.

The hot air ventilated into the drying path (3) passes through an air exhaust duct (4B) attached to cover the entire outer surface of the hot air duct (4A), and is applied to the lateral outer surface of the air exhaust duct (4B). The air is exhausted to the outside of the machine by an attached suction fan (4C). In other words, the heating section (8
), the hot air chamber (9), and the suction type fan (4c) are each provided on one side of the dryer, thereby making it possible to minimize the installation area of the entire dryer. . And the hot air duct (4A)
, the exhaust duct (4B), and the suction fan (
4C) constitutes the ventilation means (4).

In FIG. 2, (10) and (If) are stirring plates for removing temperature unevenness of the hot air passing through the hot air chamber (9).

By the way, since the drying path (3) is formed so that the ventilation direction with respect to it is opposite in the upper and lower directions,
The hot air duct (4A) is bifurcated into two vertically in the ventilation direction at approximately the midpoint in the vertical direction.

Therefore, if the operation is carried out with the ventilation to the upper half of the drying path (3) stopped, even if there is grain only in the lower half of the drying path (3), the ventilation in the upper half side will be maintained. Since the drying path (3) is stopped, hot air does not blow through the drying path (3), and it becomes possible to operate the drying path (3) in a state where half the capacity of grain can be dried.

Therefore, as shown in Fig. 4, the hot air duct (=IA
) is provided with a partition plate (12) that can be freely switched between allowing and blocking ventilation to the upper half of the drying path (3) at a location where the ventilation path branches vertically into two. The ventilation to the upper half of the passageway (3) can be stopped and canceled freely.

That is, the drying path (3) is separated by the partition plate (12).
When the ventilation to the upper half of ) is stopped, the drying path (
If half the capacity of grains in step 3) can be dried, and if the partition plate (12) stops ventilation to the upper half, drying can be carried out over the entire drying path (3) as usual. By ventilation, it is possible to dry the grain equivalent to the capacity of the drying path (3). Therefore, by switching the partition plate (12), the ventilation means (4) can be connected to the drying path (
3) The configuration is such that it can be freely switched between a state in which ventilation is provided over the entire route and a state in which ventilation is stopped for a portion of the route.

[Another example]

In the above embodiment, the ventilation to the drying path (3) is divided into two in the vertical direction, and the ventilation to the upper half can be stopped freely, but the ventilation to the lower half can be stopped freely. The ventilation to one of the pair of left and right drying paths (3) may be configured to be freely stopable, or may be further divided into a plurality of ventilation paths. Furthermore, instead of stopping the ventilation on the hot air duct (4A) side, the exhaust air from the ventilation duct (4B) side may be stopped, and the ventilation means (4) is connected to the drying path (3). The specific configuration of each part necessary to carry out the present invention can be modified in various ways, such as a specific structure that allows ventilation to be freely switched between a state in which ventilation is provided over the entire route and a state in which ventilation is stopped for a portion of the system. .

It should be noted that the present invention is not limited to the structure shown in the accompanying drawings by adding reference numerals in the claims for convenient comparison with the drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the dryer according to the present invention, and FIG. 1 is a cutaway perspective view of the dryer, FIG. 2 is a cutaway side view of the dryer, FIG. 3 is a front sectional view of the dryer, and FIG. 4 is a diagram showing ventilation route switching. It is an explanatory diagram of a structure. (3)...Drying path, (4)...Ventilation means.

Claims (1)

[Claims] A dryer comprising a drying path (3) configured to allow cross-ventilation along a direction intersecting the direction of grain passage, and a ventilation means (4) for blowing hot air through the drying path (3). In this dryer, the drying means (4) is configured to be able to freely switch between a state in which ventilation is provided throughout the entire drying path (3) and a state in which ventilation is stopped for a portion of the drying path (3).