JP3683802B2 - Grain drying method using small circulation type grain dryer and small circulation type grain dryer - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention circulates the grain stuck in the machine body with the lower screw conveyor provided at the bottom of the machine body, circulates it so that it is lifted by the elevator and returned to the upper part of the machine body, and this circulating and flowing grain Among the circulation type grain dryers that dry by supplying hot air to the grains in the drying section, the elevator lifts the grains and throws the delivered grains into the body The present invention relates to an improvement on a small circulation type grain dryer which is also used as an input.
[0002]
[Prior art]
As for the small circulation type grain dryer of the above-mentioned form, for example, as it is in Japanese Utility Model Publication No. 63-89596, the equalizing device for dividing the grain into the machine body is omitted, The valve shutter (drum shutter) is omitted and the product is manufactured at a low price in order to drop grains discharged from the hot air (dry air) toward the lower screw conveyor in the drying section in the machine body.
[0003]
More specifically, according to the drawings, as shown in FIGS. 1 and 2, a bucket conveyor for storing an elevator 2 standing on the front side of a box 1 assembled in a box shape in a cerealing tower 20 thereof. The ascending stroke side 21a of the bucket 21 faces the outer surface of the fuselage 1 and the descending stroke side 21b faces the fuselage 1, and the bucket 22 of the bucket conveyor 21 is lifted up. When reaching the upper end of the side 21a and turning around the upper pulley 23 to move to the lowering stroke side 21b, the grain is released into the tank portion a in the body 1 by utilizing the action of releasing the grain. In this manner, the upper screw conveyor (not shown) and the equalizer (not shown) are omitted so that the grains are equally fed into the basin portion a.
[0004]
In addition, a grain flow down path 3 formed by a pair of air-permeable partition walls 30, 30, a hot air supply path 4 disposed on one side thereof, and the other side of the grain flow down path 3 The grain flow down path 3 of the drying section b constituted by the exhaust air path 5 disposed is provided on the conveying rod 60 of the lower screw conveyor device 6 in which the lower end side thereof is laid horizontally on the bottom of the machine body 1. The lower end edge of one of the left and right air-permeable partition walls 30, 30 that forms the grain lower path 3 is connected to the inner cavity directly to the inner cavity, and the floor surface of the conveying basket 60 By connecting, the lower end edge of the other partition wall 30 is disposed at a position raised from the floor surface of the conveying basket 60, so that the grains that have flowed into the grain flow path 3 from the bottom of the grain tank part a can be obtained. , Overflowing from the opening w formed between the lower edge of the other partition wall 30 and the floor surface of the transport rod 60 into the transport rod 60, The accumulated grain is accumulated outside the open mouth w of the container and the upper surface of the accumulated grain from the lower end edge of the partition wall 30 to the floor surface of the conveying basket 60 reaches the angle of repose. The grain closes the open mouth w, stops the overflow of the grain, stops the flow of the grain in the grain flow downway 3, and lowers the outer part of the open mouth w where the grain is deposited. A screw conveyor 61 is provided, so that the grain overflows from the open port w by the amount of the carried grain, and is usually provided so as to close the lower end of the grain flow path 3. The valve shutter or drum shutter is omitted.
[0005]
And the cereal tank part which lays the grain which should be dried has the capacity | capacitance for several minutes with respect to the laying capacity of the normal circulation type grain dryer which has become the laying capacity of about 20 stones-30 stones. Therefore, an inexpensive small-sized circulation type grain dryer is constructed.
[0006]
[Problems to be solved by the invention]
The small circulation type grain dryer of the above-mentioned form uses the throwing of the grain from the bucket of the bucket conveyor of the elevator to perform the distributed input of the grain into the machine body and horizontally mount it on the upper part of the machine body. The tensioning upper screw conveyor and the leveling device that discharges the grain discharged from the terminal end of the upper screw conveyor are omitted, and the lower screw conveyor carries out the grain. Low price because the drum shutter or valve shutter is omitted by keeping the angle of repose and collapsing the accumulated grain so that the grain is fed out in the grain flow path Although it is made in a grain dryer, the capacity of the cereal tank inside the machine is small and the amount of tension is small, so the grain is dried to the specified moisture value. Circulation times of the grain until raising It has become many.
[0007]
By the way, this small circulation type grain dryer has a problem of generating a lot of degranulated grains depending on the state of the harvested grains.
[0008]
In particular, when the harvested cereals have already been cracked in the rice husks when they are cut, and the cereals that have been being crushed are dried (sometimes generated in large quantities depending on the weather), the cereals stuck in the aircraft At the point where the circulation of the grains is repeated several times, it is completely removed and becomes brown rice grains. And when the grain which became the state of brown rice is dried, it is easy to be damaged, and it is easy to produce a shell crack, and has caused the problem that the quality and grade of dried grain will be reduced remarkably.
[0009]
The present invention has been made to solve the problems occurring in the conventional small-sized circulation type grain dryer, and even if the grain to be dried is opened, It is an object of the present invention to provide a new means for allowing a type of grain dryer to be dried to a predetermined moisture value without causing deflation.
[0010]
[Means for Solving the Problems]
The means of the present invention for achieving the above-mentioned object has been completed based on the knowledge obtained by conducting various studies on the drying operation of a small circulating grain dryer and a large circulating grain dryer. It is.
[0011]
In other words, a large circulation type grain dryer is dried without causing deflation even if the grain to be dried is open, while a small circulation type grain dryer is opened. When the koji is dried, a lot of degranulation occurs.
[0012]
By the way, a large circulation type grain dryer that does not cause deflation in open culling has a grain filling capacity several times larger than that of a small circulation type grain dryer. Therefore, the number of circulation of the grain until the squeezed grain is dried up to the predetermined moisture value is the number of circulations required for the small circulation type grain dryer to dry the grain up to the predetermined moisture value. Compared to, it is a few times less.
[0013]
From this, it was noticed that the deflation generated when drying the cocoon was affected by the circulation flow during the drying process, and the kaizen was dried with a small circulating grain dryer. When carrying out, it was thought that the unfolding of the unfolding that was stuck in the fuselage circulated several times, but conversely, it was not removed until repeated several times. Control the operation of the lower screw conveyor, which controls the circulation of the grain of the type grain dryer, so that it is performed intermittently by incorporating a timer, thereby reducing the number of circulation of the grain during the drying process by half. This is due to the fact that when drying was performed and drying was performed, it was possible to dry up to a predetermined moisture value with almost no deflation.
[0014]
And from this, in the means of the present invention, as means for achieving the above-mentioned object, the operation of the lower screw conveyor to be mounted on the body of a small circulating grain dryer is driven at predetermined intervals. When the lower screw conveyor is continuously operated, the number of circulations during the drying up to the predetermined moisture value of the grains to be circulated while being controlled to be intermittently operated Small circulation type grain drying characterized in that it is set to be reduced to half or a fraction of the number of circulations, and the grain is put into the tank part of the machine body and dried. The grain drying method using the machine is proposed, and the operation of the motor is placed at a predetermined interval in the control circuit of the motor that drives the lower screw conveyor installed in the body of the small circulating grain dryer. while Built-in timer device to operate, the intermittent operation of the lower screw conveyor thereby, the number of circulation of the grain until the grain is dried up is approximately the number of circulation when the lower screw conveyor is rotated continuously The present invention proposes a small circulation type grain dryer characterized in that it is halved to a few times smaller.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIGS. 1 to 5, the basic structure of the small circulating grain dryer used in the means of the present invention is the same as that of an ordinary small circulating grain dryer. In order to perform the input of the grains to the cistern part a in the machine body 1 by the unloading operation of the bucket 22 of the bucket conveyor 21 stored in the cerealing tower 20 of the elevator 2 standing on the front surface of the machine body 1, The upper screw conveyor and the leveling device for tension are omitted, and the lower end side of the grain flow down path 3 of the drying section b is connected to the conveying rod 60 of the lower screw conveyor device 6, and the grain flow down path 3 Is formed between one of the lower end edges of the pair of breathable partition walls 30 and 30 and the floor surface of the conveying basket 60, and the lower screw conveyor 61 is provided at an outer position thereof. Dora provided at the lower end part of the grain flow downway 3 by arranging By omitting the shutter or valve shutter, it is constituted to that of inexpensive forms.
[0016]
However, for the lower screw conveyor 61 that causes the grain to circulate, the motor M is operated intermittently with a predetermined interval in the control circuit that controls the operation of the motor M that drives the screw shaft 61a. The operation of the lower screw conveyor 61 driven by the motor M is incorporated as an intermittent operation in which a pause period in which rotation is stopped is interposed at a predetermined interval. Therefore, the circulation operation of the grain due to the operation of the lower screw conveyor 61 is reduced, and the number of circulation of the grain until the drying is completed is reduced.
[0017]
Here, the stop period for stopping the rotation with a predetermined interval set during the operation stroke of the lower screw conveyor 61 by the timer device is the time length of the rest period and the lower part that rotates at the interval of the time length. The number of times of circulation of the grain until the end of the drying process calculated from the ratio of the operating time of the screw conveyor 61 and the tension capacity of the small circulation type grain dryer is calculated. It is set to be equal to or close to the number of circulation of the grain until the end of the drying process in a large-scale circulation type grain dryer that hardly causes deflation even if it is performed.
[0018]
For example, if the tension capacity of a small circulating grain dryer is 10 stones and the tension capacity of a normal large circulation grain dryer is 20 stones, the lower screw conveyor 61 incorporated in these Because there is almost no difference in size and shape and conveyance capacity, the number of circulation of the grain until the dried grain is dried is twice that of the large circulation grain dryer in the small circulation grain dryer. Therefore, the number of circulations is set to be about the same as that of a large size by halving this.
[0019]
The control circuit for the motor M is provided with a continuous operation circuit for performing normal continuous operation without drying of the above-mentioned timer device for drying normal grains, and this is intermittently provided with the timer device. For example, as shown in FIG. 6, a switching dial 70 is provided on the operation panel 7 of the controller installed on the front side of the airframe 1, and the operation circuit can be switched by rotating the operation circuit. So that
[0020]
At this time, in the control circuit of the motor M, for example, the lower screw conveyor 61 is intermittently operated to repeat a 1 minute drive and a 1 minute pause, and an intermittent operation to repeat a 2 minute drive and a 2 minute pause. As in the operation, a plurality of timer devices having variations in the repeated mode of circulating drying performed by driving the lower screw conveyor 61 and stationary drying performed by stopping the lower screw conveyor are incorporated, As shown in FIG. 8, the switching dial 70 provided on the operation panel 7 selects an intermittent 1 scale 700 which is set by selecting the repetition every 1 minute as described above and the repetition every 2 minutes as described above. An intermittent 2 scale 701 to be set and a standard scale 702 to select and set an operation for continuous operation as in the past are provided. Selectively switched by the rotation operation may be the so performed.
[0021]
In addition, the operation of the lower screw conveyor 61 that circulates and flows the grain stretched on the machine body 1 is controlled and the number of times that the grain is circulated until the grain is dried up is determined by the large-scale circulating grain dryer. For example, the control for making the number of circulations of the grain approximately equal to or close to the number of times before raising is performed by, for example, inserting the memory card 8 equipped with the semiconductor memory device into the operation panel 7 of the controller. By providing the slot 71 and inserting the memory card 8 here, the operation of the small circulating grain dryer A can be performed by the drying process incorporated in the storage device installed in the memory card 8. In accordance with the program, the memory card 8 is incorporated into the drying process program, and the drying speed when the grain is dried up to a predetermined moisture value, and Prepare a plurality of variations in the number of times that the kernel is circulated until it is dried to a predetermined moisture value, and select and replace these cards 8 ... The number of times may be controlled so as to be approximately equal to or close to the number of times of circulation of the grains when the grains are dried by a large-sized circulation grain dryer.
[0022]
【The invention's effect】
As described above, the grain drying means using the small circulation type grain dryer according to the present invention operates the lower screw conveyor installed in the body of the small circulation type grain dryer at a predetermined interval. Cereals that circulate so as to return to the basin section again by the elevator through the lower screw conveyor from the drying section below the basin section through the intermittent operation driven by The number of circulations while the grains are dried up to a predetermined moisture value is set to half to a fraction of the number, and the grains are put in the cereal tank portion in the machine body and dried. Therefore, even when the grain to be dried is open, it is prevented from being completely crushed and turned into brown rice grains, and dried to a predetermined moisture level.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of a small circulating grain dryer.
FIG. 2 is a vertical sectional side view of the same.
FIG. 3 is an overall perspective view of the same as above.
FIG. 4 is a cross-sectional plan view of the above.
FIG. 5 is a longitudinal front view of the main part of the above.
FIG. 6 is a front view of an operation panel assembled to a controller mounted on the aircraft body.
FIG. 7 is a perspective view of a memory card that is inserted into a card insertion slot provided in the operation panel.
FIG. 8 is an enlarged front view of a switching dial provided on the operation panel.
[Explanation of symbols]
A ... Circulating grain dryer, M ... Motor, a ... Grain tank unit, b ... Drying unit, w ... Opening port, 1 ... Airframe, 2 ... Elevator, 20 ... Grain tower, 21 ... Bucket conveyor, 21a ... Up stroke side, 21b ... Down stroke side, 22 ... Bucket, 23 ... Upper pulley, 3 ... Grain flow down path, 30 ... Bulkhead, 4 ... Feeding path, 5 ... Air exhaust path, 6 ... Lower screw conveyor device, 60 DESCRIPTION OF SYMBOLS ... Conveyance basket, 61 ... Lower screw conveyor, 61a ... Screw shaft, 7 ... Operation panel, 70 ... Switching dial, 700/701/702 ... Scale, 71 ... Insertion port, 8 ... Memory card.

Claims (3)

Control the operation of the lower screw conveyor installed in the body of a small circulating grain dryer to an intermittent operation driven at a predetermined interval, and circulate by sticking to the grain tank in the body The number of circulations during drying of the grain to a predetermined moisture value is set to be reduced to half to a fraction of the number of circulations when the lower screw conveyor is continuously operated, A grain drying method using a small circulation type grain dryer characterized in that a grain is put into a grain tank part in the machine body and dried. A control device for a motor that drives a lower screw conveyor to be mounted on the body of a small circulating grain dryer incorporates a timer device that operates the motor intermittently with a predetermined interval, thereby lower screw conveyor By intermittent operation, the number of circulation of the grain until the grain is dried is approximately half to a fraction of the number of circulation when the lower screw conveyor is rotated continuously. A small circulating grain dryer. An intermittent operation circuit that incorporates a timer device that makes the operation of the motor intermittent with a predetermined interval in the control circuit of the motor that drives the lower screw conveyor to be equipped in the body of a small circulating grain dryer, It is characterized by being connected to a continuous operation circuit that continuously drives the operation of the motor, and these circuits can be switched by turning the switching dial provided on the operation panel of the controller equipped on the front of the aircraft. The small circulation type grain dryer according to claim 2.

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