JPH0514154Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a grain dryer that can efficiently dry even a fractional amount of grain that is less than the predetermined capacity of the dryer.

"Prior Art" Conventionally, grain dryers developed for drying fractional amounts of grain that are less than the predetermined capacity of the dryer include, for example, the one described in Japanese Patent Application Laid-Open No. 59-81485. It is being To explain this with reference to FIG. 5, reference numeral 1 denotes a dryer main body having a horizontally long rectangular tube shape, and inside the dryer main body 1, a hot air chamber 3 and an air exhaust chamber 5 are arranged for drying in a direction perpendicular to the horizontal direction. Ventilation drying sections are arranged alternately with passages 4 in between, and a grain conveyor 7 connected to an elevator 6 is installed horizontally at the top of the dryer main body 1. A drop opening 8 is provided on the starting end side of the grain distribution conveyor 7 for allowing grains to fall to one side during fractional drying, and can be opened and closed by a cover plate 9.

In addition, in a circulating ventilation dryer that has a ventilation drying chamber in which a ventilation frame and an ventilation frame are arranged alternately to form multiple rows of grain flow paths, the ventilation frame is partitioned into multiple upper and lower stages. , the one in which the connection side to the hot air supply path of each partition part can be opened and closed respectively was developed in 1983-
It is described in Publication No. 3277.

``Problems to be solved by the invention'' By the way, in a suction-type grain dryer like the one described in the above-mentioned Utility Model Publication No. 53-3277, each partition of a plurality of partitioned air supply frames is If the partitions can be opened and closed individually on the hot air blowing chamber side, even if some of the partitions are closed for fractional drying,
Since the ventilation frame is porous all over its vertical direction, if the upper surface of the ventilation frame is not buried in grain, the suction air from the suction exhaust machine will flow from that surface without passing through the grain accumulation layer. Therefore, there is an inconvenience that the suction and exhaust efficiency of the suction and exhaust fan decreases.

Therefore, the present invention is intended to eliminate the inconveniences of the above-mentioned conventional grain dryers, and to make all the suction air drawn in through the exhaust chamber pass through the grain pile even in the case of fractional drying, thereby:
To provide a grain dryer capable of efficiently drying fractional amounts of grain even when the fractional amount of grain is dried.

"Means for Solving the Problems" In order to achieve the above object, the present invention is constructed as follows.

That is, the structure is such that porous hot air chambers and porous exhaust ventilation chambers are arranged alternately in the dryer body so as to form a drying passage between both sides, and the hot air chambers are replaced by hot air ventilation chambers. , and a grain dryer in which each exhaust chamber is connected to a suction exhaust chamber, and the grains in the ventilation drying passage are ventilated and dried by hot air flowing from the hot air chamber to the exhaust chamber through the drying passage. This grain dryer is capable of fractional drying, in which the wind chamber is partitioned into upper and lower stages, and each of the partitions can be opened and closed by a damper on the side of the suction and exhaust chamber.

``Function'' According to the present invention, each ventilation chamber is partitioned into upper and lower stages, and each of the partitions is configured to be openable and closed by a damper on the side of the suction and ventilation chamber, so that the specified capacity of the dryer is not exceeded. Even if the upper part of the porous ventilation chamber is exposed from the grain accumulation layer, by closing the damper in the exposed area, the suction air from the suction ventilation chamber will be removed from the ventilation chamber. All of the hot air sucked by the suction/exhaust fan flows through the grain accumulation layer without passing through the exposed portion, and has a drying effect.

"Example" Examples will be described with reference to the drawings.

In FIGS. 1 to 4, reference numeral 101 denotes a dryer main body in the shape of an oblong rectangular tube, and this dryer main body 10
1, there is a storage tank 102 in the upper stage along the direction perpendicular to the horizontal direction, and a ventilation drying part 103 in the middle stage.
In the lower stage, take-out tanks 104 are sequentially provided three-dimensionally.
Inside the ventilation drying section 103 and the take-out tank 104, a hot air blowing chamber 105 and a suction and exhausting chamber 106 are arranged along the horizontal direction over the entire left and right sides thereof. In the ventilation drying section 103, a plurality of hot air chambers 107 and a plurality of exhaust chambers 108 form a plurality of drying passages 109 between a hot air blowing chamber 105 and a suction exhaust chamber 106 located in the left and right direction. One end of the hot air chamber 107 is connected to the hot air blowing chamber 105, and one end of the hot air chamber 107 is connected to the hot air blowing chamber 105.
One end is connected to the suction/exhaust chamber 106. Almost all sides of the hot air chamber 107 and the exhaust chamber 108 are formed in a porous shape. The above plurality of drying passages 1
09 has its upper end communicating with the storage tank 102 and its lower end communicating with the feeding chamber 110, and the feeding opening 111 of the feeding chamber 110 is equipped with a feeding roll 112 which is intermittently rotated. Also, feeding room 1
A take-out chamber 113 is formed below 10,
At the bottom of the take-out chamber 113, there is a take-out gutter 114 in the front and back direction.
is connected. 115 is an unloading screw. Note that the unloading end of the unloading gutter 114 is connected to an elevator (not shown), and the upper end of the elevator is connected to the dryer main body 1.
It is connected to a grain distribution conveyor (not shown) installed horizontally on the top of 01.

A hot air generator 116 containing a burner is installed on the front side of the hot air blowing chamber 105,
A suction/exhaust fan 117 is provided on the rear side of each of the air conditioners 6 .

The interior of the plurality of ventilation chambers 108 is partitioned into multiple levels, upper and lower, by partition plates 118, and a plurality of partition plates of each ventilation chamber 108 are arranged on the side wall of the suction and ventilation chamber 106. Damper 1 corresponding to 118
19 is provided, and each partition section 120 of the exhaust chamber 108 can be opened and closed with respect to the suction exhaust chamber 106 by opening and closing the damper 119.

In the grain dryer of this embodiment, when drying a predetermined capacity of grain, the hot air chamber 107 and the exhaust chamber 108 in the ventilation drying section 103 are buried in the accumulated layer of grain, so the damper 119 is If you leave them all open, hot air ventilation chamber 105, hot air chamber 10
7. The suction hot air flowing through the drying passage 109 and the exhaust air chamber 108 to the suction exhaust chamber 106 flows through the grain accumulation layer and is dried.

By the way, if the amount of grain to be dried is a fraction less than the predetermined amount, the hot air chamber 107 and the exhaust chamber 108 are exposed from the grain accumulation layer.
In this case, the plurality of dampers 119 are closed one after another from above to lower the height at which the hot suction air is sucked into the exhaust chamber 108, so that all of the hot air flows through the layer of grain accumulation, thereby increasing efficiency. Allow drying to occur.

That is, each ventilation chamber 108 is partitioned into upper and lower stages, and each of the partitions 120 is used as a suction and ventilation chamber 1.
Since the damper 119 is configured to freely open and close each side of the 06 side, even if the upper part of the porous ventilation chamber 108 is exposed from the grain accumulation layer for drying a fraction, the suction air will prevent the exposure of the ventilation chamber 108. without passing through the part,
All of the hot air sucked by the suction/exhaust fan 117 is passed through the accumulated layer of grains, allowing efficient drying.

"Effect of the invention" According to the invention, porous hot air chambers and porous exhaust ventilation chambers are arranged alternately in the dryer main body so as to form a drying passage between both sides, and the hot air chambers is connected to a hot air blowing chamber, and the exhaust chamber is connected to a suction and exhaust chamber, and the grains in the ventilation drying passage are ventilated and dried by the hot air flowing from the hot air chamber through the drying passage to the ventilation chamber. , even in the case of fractional drying,
The effect of efficiently drying the grains is achieved by allowing all the suction air sucked through the ventilation chamber to flow through the accumulated layer of grains.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional front view of the main part of the grain dryer, FIG. 2 is a longitudinal sectional side view of the same, and FIG. A sectional view, FIG. 4 is a perspective view showing a part of the exhaust chamber, and FIG. 5 is a schematic vertical side view showing a conventional example. 101...Dryer main body, 105...Hot air blowing chamber, 106...Suction exhaust chamber, 107...Hot air chamber,
108...Exhaust room, 109...Drying passage, 117
...Suction exhaust fan, 119...Damper, 120...
Each partition.

Claims (1)

[Scope of utility model registration request] Inside the dryer body, porous hot air chambers and porous ventilation chambers are arranged alternately so as to form a drying passage between both sides, and the hot air chamber is used as a hot air blowing chamber, and the ventilation chamber is used as a hot air ventilation chamber. In a grain dryer that is connected to each suction and exhaust chamber and ventilates and dries the grain in the ventilation drying passage using hot air that flows from the hot air chamber through the drying passage to the exhaust chamber, each of the above-mentioned ventilation chambers is connected to multiple stages above and below. A grain dryer capable of fractional drying, characterized in that the grain dryer is divided into two parts, and each of the partition parts can be opened and closed by a damper on the side of the suction/exhaust chamber.