JP2833663B2 - Sample grain dryer - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a communal drying facility, in which a part of each grain brought in individually and consignees is brought to a constant moisture value under the same drying conditions. When the finish is dried, a fixed amount of hot air is always allowed to flow through the drying box, even if there is no grain in the drying box, and the grains are uniformly dried, and the grains brought in are kept. The present invention relates to a sample grain dryer that can accurately distribute a producer's selling price according to minutes.

[Prior art] Conventionally, in a co-drying facility, a part of each grain brought in individually and consignees is finished and dried to a constant moisture value under the same drying conditions, and the grain brought in is brought to the store. In order to distribute the producer's selling price according to the minute, the drying box was formed with the same shape on both side walls and the bottom wall, and was inserted and inserted freely through the opening window opened in the front of the dryer frame. The drying box is provided upright on the drying shelf and arranged in parallel to be able to roll over, and the hot air generated in the hot air generator is passed through the upper air path through the inside of the drying box by the negative pressure of the suction and exhaust fan. Is it possible to circulate it toward the lower wind path and quickly dry the grains stored in the drying box and shut off the hot air from flowing through the drying box when the drying box is turned over, Externally A sample grain dryer which can be more easily confirmed is known prior to the present application, for example, as described in JP-A-56-144696.

[Problems to be solved by the invention]

By the way, in this conventional sample grain dryer,
If grains are stored in the drying box, place the drying box upright on the drying shelf so that the hot air chamber can flow smoothly through the drying box. When no is stored, the drying box is placed on a drying shelf to shut off the flow of hot air in order to prevent hot air from quickly blowing through the inside of the drying box.

However, in the case of drying the grains in a plurality of drying boxes using the same drying conditions, that is, using the same amount of hot air, the grains are stored due to an increase or decrease in the number of drying boxes in which no grains are stored. There is a difference in the air volume of the hot air flowing through the drying box, and as a result, the adverse effect that the drying end time is different due to the difference in the drying speed occurs, and the air volume of the hot air flowing through many drying boxes, that is, However, there has been a problem that the drying speed cannot always be kept constant.

The present invention relates to a hot air duct at a position where a drying box is inserted,
An opening / closing shutter having a ventilation surface that is slid toward the hot air duct by the contact pressing operation with the bottom wall when the drying box is put in and taken out is pivoted, so that there is no grain in the drying box, It is an object of the present invention to provide a sample grain dryer capable of constantly drying air at a constant flow rate, allowing a constant flow of drying hot air to flow through the inside of a drying box, stabilizing a drying speed, and uniformly drying grains.

[Means for Solving the Problems] In order to achieve the above object, in the sample grain dryer of the present invention, a horizontally long intake duct and a hot air duct are arranged at upper and lower positions in a dryer body, and Open the top surface between the intake duct and the hot air duct, and insert a plurality of drying boxes formed on the ventilation surface on the bottom wall at intervals so that they can be freely inserted and removed in an upright or upside-down state. Can be passed from the hot air duct to the intake duct through the inside of each drying box, and the hot air duct at the position where the drying box is inserted is pressed against the bottom wall when the drying box is put in and out. An opening / closing shutter having a ventilation surface that slides into the hot air duct by operation is pivotally mounted.

In addition, in order to slide the opening / closing shutter toward the inside of the hot air duct by the contact pressing operation with the bottom wall when the drying box is inserted, a contact plate is formed on the upper surface of the opening / closing shutter in a mountain shape along the drying box insertion / removal direction. It is effective to stand.

[Action] Now, an individual dries a part of a plurality of types of cereals brought in by consignees to a fixed finish moisture value under the same drying conditions, and sells the cultivated products according to the ownership of the cereals. In order to obtain a sample grain for accurately allocating the delivery fee, first, a part of different types of grain brought in by individuals and by consignees is extracted and made into a sample grain. This is accommodated in a plurality of drying boxes, and then these drying boxes are inserted between a hot air duct and an air intake duct provided in the dryer body from the front side of the dryer body. At the time of this insertion, the dry box containing grains therein is inserted in an upright state as shown in FIGS. 3 and 4, while the dry box containing no grains therein is shown in FIGS. As shown in FIG. 6, it is inverted and inserted under the inverted state.

Then, in the drying box in which the grains are stored, the bottom wall formed on the ventilation surface by the insertion of the drying box comes into contact with the mountain-shaped contact plate erected on the upper surface of the opening / closing shutter. The opening / closing shutter is pressed so as to swing toward the inside of the hot air duct about the pivot portion.

As a result, the drying box and the hot air duct are connected to the hot air duct only by the ventilation box provided on the bottom wall of the drying box.

Also, in a dry box that does not contain grains, when inserted in an upside-down state, the side wall of the dry box contacts the mountain-shaped contact plate only once and opens and closes by the contact pressing operation. The shutter slides toward the hot air duct around the pivot portion, but when the drying box is completely inserted so that the contact with the side wall passes, the opening / closing shutter is moved by the resilient action of the pivot portion. 6 is restored to the state shown in FIG. 6, and the lower surface of the drying box is connected to the hot air duct through the ventilation surface of the open / close shutter.
The upper surface is connected to the intake duct through the ventilation surface of the bottom wall of the drying box, and the same ventilation resistance as that in which the grains are stored in the drying box is applied.

Therefore, when the dry hot air is circulated through the drying box from the hot air duct by the negative pressure effect in the intake duct,
The same amount of dry hot air is circulated in many drying boxes regardless of the presence or absence of cereals, and the stored cereals can be dried uniformly at the same drying speed. Machine can be supplied.

Example An example will be described with reference to the drawings.

1 to 6, reference numeral 1 denotes a dryer main body of a sample grain dryer, in which a horizontally long intake duct 2 and a horizontally long hot air duct are provided inside a dryer body 1 having an interior formed as a cavity. The drying box 4 is disposed opposite to the drying box 3 at an interval that allows the user to take out and put the box in an upright or inverted state. A single access window 5 for fitting the drying box 4 between the intake duct 2 and the hot air duct 3 is provided on the front side wall of the dryer main body 1 at a position facing the space between the intake duct 2 and the hot air duct 3. A plurality of openings are provided at equal intervals over a step or a plurality of steps. The drying box 4 is formed in a box shape having an open upper surface, a lower surface closed by a bottom wall 6 serving as a ventilation surface 7, and the other surface surrounded by a blind wall and having a rectangular cube as a whole. .

The lower surface of the intake duct 2 and the upper surface of the hot air duct 3 at the position where the drying box 4 is to be fitted are formed so that the intake duct 2, the drying box 4 and the hot air duct 3 communicate with each other by closing the openings 8,9. The opening 9 has a ventilation surface
An opening / closing shutter 10 having an opening 11 is pivotally attached downward through a hinge 12 with a bullet so that the opening / closing shutter 10 can slide in the direction of the hot air duct 3. As shown in FIG. 6, the opening area of the ventilation surface 11 is such that when the grains are not stored in the drying box 4, the drying box 4 is turned upside down and fitted between the intake duct 2 and the hot air duct 3. Next, the flow rate of the dry hot air flowing through the drying box 4 from the hot air duct 3 to the intake duct 2 via the ventilation surfaces 11 and 7 and the state in which the grains are stored in the drying box 4 as shown in FIG. Based on the drying box 4, the intake duct 2 and hot air duct 3
Are provided so that when they are fitted upright between them, the flow rate of the dry hot air passing through the ventilation surface 7 and the accommodated grains matches.

Therefore, if the opening area of the ventilation surface 11 is set to be equal to the ventilation resistance of the grains as described above, the drying circulating through the respective drying boxes 4 regardless of whether the grains are stored in the drying boxes 4 or not. The amount of hot air is always constant, and the stored grains can be dried uniformly at a constant drying speed.

In addition, a contact plate 13 having a mountain shape is provided upright on the upper surface of the opening / closing shutter 10 along a direction in which the drying box 4 is put in and taken out. Open / close shutter as shown in FIG.
The 10 is moved into the hot air duct 13.

A suction exhaust fan is provided on the exhaust side of the intake duct 2 having a horizontally long shape.
A hot air generator 15 is provided on the base end side of the hot air duct 3. Reference numeral 16 denotes an exhaust duct connected to the discharge side of the intake exhaust fan 14.

[Effects of the Invention] Since the present invention is configured as described above,
The following effects are obtained.

Between the intake duct and the hot air duct, the top surface is opened, and a plurality of drying boxes formed on the ventilation surface on the bottom wall are inserted at intervals so that they can be freely inserted and removed upright or upside down. When the cereal is dried by sucking and flowing through the inside of each drying box toward the intake duct, the hot air duct at the position where the drying box is inserted has a bottom wall and a mountain shape when the drying box is put in and out. The opening / closing shutter is pivotally mounted with a ventilation surface that slides into the hot air duct by a contact pressing operation with the abutting plate presented, so that when no grain is stored in the drying box, the ventilation surface of the opening / closing shutter is changed. Eliminate the bottom wall with the ventilation surface and grain, and when no grain is stored in the drying box, cut off the top and bottom surfaces of the drying box with the bottom wall ventilation surface and the opening and closing shutter ventilation surface to reduce ventilation resistance. Same as in containment As a result, regardless of the presence or absence of grains in the drying box, the same amount of dry hot air can be circulated in each drying box by the negative pressure action from the intake duct, and the grains are made the same. It can be uniformly dried under drying conditions.

[Brief description of the drawings]

FIG. 1 is a front view of a sample grain dryer, FIG. 2 is a vertical sectional front view of a partly cutaway part of FIG. 1, and FIG. 3 is a partially cutaway working side of a drying box containing grains at the start of insertion. Sectional view, FIG. 4 is a partially cut-away working side sectional view at the time of fitting, FIG. 5 is a partially cut-away working side sectional view at the time of starting fitting of a dry box not containing grains, and FIG. FIG. 7 is a perspective view of the opening / closing shutter. DESCRIPTION OF SYMBOLS 1 ... Dryer main body, 2 ... Intake duct, 3 ... Hot air duct, 4 ... Dry box, 5 ... Access window, 6 ... Bottom wall, 7
…… Ventilation surface, 10 …… Open / close shutter, 11 …… Ventilation surface, 13…
… Abutment surface

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F26B 9/06 F26B 17/14

Claims (2)

(57) [Claims] 1. A vertically long intake duct and a hot air duct are disposed at upper and lower positions in a dryer main body, and an upper surface is opened between the intake duct and the hot air duct, and a bottom wall is provided with a ventilation surface. A plurality of formed drying boxes are inserted into an upright or upside-down shape at an interval so that they can be freely inserted and removed, so that dry hot air can flow from the hot air ducts through each drying box to the intake duct. In the sample, the hot air duct at the position where the drying box is inserted is provided with an opening / closing shutter having a ventilation surface that is slid toward the inside of the hot air duct by an abutting pressing operation with the bottom wall when the drying box is taken in and out. Grain dryer. 2. A sample grain dryer according to claim 1, wherein a contact plate having a mountain shape is erected on an upper surface of the opening / closing shutter having a ventilation surface along a direction in which the drying box is put in and taken out.