JPH0942848A - Grain agitator in grain storage bin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promote fluidization of grain near the inner wall of a bin where the grain is gradually dried while the grain is mixed and agitated by agitation screws. SOLUTION: Each of bins 11A to receive the store grain has a plan view of such a polygon as a rectangle and is provided a drying air supply device to supply drying air from the bottom and agitation devices, and the grain that is fed successively is dried gradually while mixed up with the grain under drying and the dried grain. Agitation screws 21a and 21b are vertically arranged in the bin 11A and a controller is provided to previously store moving patterns of the agitation screws 21a and 21b to agitate the grain almost throughout by the rotation of the agitation screws 21a and 21b while the agitation screws 21a and 21b are moved back and forth or from side to side. As the moving patterns are set so that the number of moving along the inner wall of the bin is larger than that of moving in the middle area, fluidization of the grain near the inner wall is promoted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain stirring device in a grain storage tank.

[0002]

2. Description of the Related Art There is a mode in which a bottle in which grains are to be stored is used to dry the infused grains. In this form, since it is necessary to stir the grain, a screw for stirring is provided in the vertical direction, and the grain is stirred by rotating while moving in the bottle in the front, rear, left, and right directions. As described in Japanese Patent No. 24867, it is general to move in a zigzag shape.

By the way, when the stirring screw moves near the inner wall surface, the movement of the grain from the bottom to the top is disturbed by the influence of the fixed surface, and the desired stirring and mixing state cannot be obtained.

[0004]

In order to solve the above-mentioned drawbacks, the present invention supplies drying air from the bottom surface to the bottles 11A, 11A, ... In this configuration, each bin is equipped with a stirring device, and the grains that are sequentially supplied are mixed during drying or with the grains that have already been dried to be gradually dried. In the bottle, stirring screws 21a and 21b are provided. Provided in the longitudinal direction, there is provided a control means for storing the movement pattern in advance so as to agitate the substantially whole grain by rotation while the screw moves forward and backward or left and right, and the movement pattern follows the inner wall surface of the bottle. The number of movements is set to be greater than the number of movements on the center side, and the grain agitator in the grain storage tank is configured.

[0005]

The operation and effect of the present invention is such that the screw moves back and forth or left and right to agitate substantially the entire grain by rotation, but the number of times of movement along a predetermined inner wall surface is set to be larger than the number of times of movement on the other side of the center. Therefore, it is possible to secure a desired stirring and mixing state for grains near the inner wall, promote uniform reduction of water content, and prevent local deterioration of quality.

[0006]

An embodiment of the present invention will be described with reference to the drawings. The cargo receiving field 2 including the cargo receiving hoppers 1, 1 ... Is configured separately from other main equipment groups so as to form passages on both sides of the cargo receiving hoppers 1, 1 ... so that the transport truck can easily enter and leave. .

The rough hopper 3 and the load receiving and weighing machine 4 for receiving and weighing the grain are connected to the load receiving hopper 1 through a transport mechanism.
These are installed in close proximity to each other along with a sorting machine 5 and a rice hulling plant 6 that select received grain or dried grain, and are configured in the same building 10 as an operation room 7, a voluntary inspection room 8, a product storage area 9, etc. Has been done. Storage and drying bottles 11, 11, ... Are arranged in series in the building 10. In this embodiment, the left and right A, B, and C3 series × 6 bins are accommodated in the building 12 for about 50 tons per unit, for a total of 18 bins.

Each of the bottles 11A, 11B and 11C is a rectangular bottle having the same shape, the outer wall 11a is made of glass wool or the like as a heat insulating material, and the intermediate partitions 11b and 11c of the bottles are ordinary walls. I use wood. Bottle 1
The bottoms of 1A, 11B and 11C have a flat sweep floor 13 shape, and a ventilation space 14 is formed below the sweep floor 13.

Building 1 of the bottles 11A, 11B, 11C
A belt-conveyor-type stake conveyor 1 on the upper side
5, 15 ... Are provided in parallel, the space above the bin in which these conveyors 15 are disposed is provided with sealing walls 16 and 16 by a heat insulating material so as to form spaces in the center and left and right in cross section. A floor material 18 is stretched over the central compartment 17, and the compartment 17 can be used as an inspection passage. Stretching chutes (not shown) are provided in the sealing partition walls 16 and 16 for the respective bins 11A, 11B and 11C. Reference numeral 19 denotes a flight conveyor which is horizontally extended from the grain elevator discharge portion so that grain can be supplied to the staking conveyor 15. The stake conveyor 15 is configured so that it can be controlled to move in the longitudinal direction and can be fed into an arbitrary bin.

For the six A-series bottles, two stirring screws 21a and 21b are provided for each bottle 11A.
Is provided. These screws 21a and 21b are an example of a stirring device, and drive motors 22a and 22b are separately provided.
The support frame 23 of the screws 21a and 21b is configured to reciprocate back and forth along rails 24 and 24 provided at the upper end of the bottle 11, and the left and right screw intervals are maintained in the direction along the support frame 23. It is configured to reciprocate as it is, and the entire surface can be agitated while the square bottle is divided into right and left and moved in a predetermined pattern.

That is, the support frame 23 includes the left and right vertical frame portions 23.
a, 23a and front and rear lateral frame portions 23 provided to connect them
b, 23b and the like are rigidly formed as an integral structure, of which the vertical frame portions 23a, 23a are provided with a rotary shaft 25 in a left-right linked manner. The rollers 26, 2 are provided at the left and right ends of the rotary shaft 25.
6 and is guided by the rails 24, 24 on the side wall of the bottle. Reference numeral 27 denotes a forward / reverse rotation motor that interlocks the rotary shaft 25 with forward / reverse rotation. The lateral frame portion 23b of the support frame 23,
A movable frame 28 having a length of about half the right and left length of the support frame 23 is placed on the reference numeral 23b via rollers 29, 29, ..., and is movable along the lateral direction of the support frame 23. Set up. Reference numeral 30 denotes a forward / reverse rotation motor in which the shafts of the rollers 29, 29 ...

Limit switches 35, 36, 37, 3 for inputting respective movement limits to the support frame 23 and the movement frame 28.
8 are arranged. The limit switches 35 and 36 provided on the support frame 23 come into contact with fixtures (not shown) provided at the front and rear ends of the rail 24 to be turned on, and are input to the operation control unit 39 via the input circuit 40. Similarly, the limit switches 37 and 38 provided on the moving frame 28 can be turned on by abutting a fixture (not shown) provided at each of the left and right ends of the support frame 23. Similarly, the operation control is performed via the input circuit 40. It is input to the section 39.

The operation control section 39 has an operation control mechanism for each section and a setting input mechanism, and outputs drive signals to the motors 27, 30 and 22a, 22b via an output circuit 41. In each of the bottles 11A, the stirring screws 21a and 21b are configured to draw a predetermined pattern while keeping a constant interval and to stir and mix the entire surface of the bottle 11A. The operation control unit 39 stores a certain movement pattern, executes forward / reverse rotation interlocking of the motors 27 and 30 that control the movement of the support frame 23 and the movement frame 28, and follows the pattern. That is, an example of the movement pattern is as shown in the figure, and the support frame 23 and the movement frame 2 are
By moving 8 the stirring screw can be moved in the order indicated by the arrow. The movement frame 28 moves from one of the four corners (a) of the four corners of the bin A as the starting point to move along the inner wall (b) to end the forward stroke (at the end of the virtual wall at the middle of the left and right of the bin).
The support frame 23 is driven to move backward by a predetermined short section, the left and right reciprocating stroke drive is performed over the entire width of the moving frame 28, and the movement between the virtual wall c and the inner wall d corresponding thereto is repeated to repeat the inner wall roll. The pattern P ₁ (a in FIG. 1) reaching the other corner portion different from the starting point through the left movement along the inner wall e corresponding to, moving forward along the inner wall d from this corner portion, and then predetermined A pattern P reaching the connection corner G between the rear inner wall B and the virtual wall C, which moves forward and backward along the virtual wall C by repeating the front-back reciprocation of the moving frame 23 over the entire front-back distance while moving to the right of the short section.
₂ (b in the figure), the locus indicated by c in FIG. 1, that is, a pattern P ₃ starting from the corner G along the inner wall B and reaching the corner J along the inner wall E, also indicated by d Start from the movement along the virtual wall c from the corner of the locus and follow the inner wall d P ₁
The stirring and mixing is performed while repeating the pattern P ₄ reaching the corner a, which is the starting point, in this order.

Of the above patterns, the number of times along the inner walls b, d, e, and the virtual wall c is three times by executing the above patterns P _{1 to} P ₄ once, and at other places, the front and rear, left and right turn backs are performed. Even in the above embodiment in which the short distance is kept constant, the number of times is two, and even if this pattern is repeated a plurality of times for several hours, the relationship of the number of passage times 3: 2 is maintained.

In the above-mentioned A series, a stirring screw is provided, but in the B and C series, such a stirring screw is not provided and a diffusing device is provided in the feeding supply section. 42, 42 ... Discharge conveyors for discharge and rotation, which are in the form of a belt conveyor and have the above-mentioned ventilation space 1
4, 14, ... Are provided at positions facing the wind tunnel 43 for each series.

A blower chamber 44 is provided in a state of being connected to the building 12 for the bottles 11A, 11B, 11C, and blowers 45, 45 ... Are provided in each series connected to the inlet of the ventilation space 14. 46 are heating devices, and the blower 45 can supply hot air to the ventilation space 14 by operating the heating devices.
As the operation mode of the bins, since the weighing amount from each of the load receiving weighing machines 4 is obtained and the amount of staking for each bin 11 can be arbitrarily set, the amount of squeezing grains in the B and C series of bins can be set. A dry main form in which a relatively high drying rate is obtained by making a thin layer, and in the A series, grains that have become relatively dry or have reached the finish moisture or have come close to this from the B and C series, and have already been infused with these grains. Alternatively, agitating and drying mode in which a new consigned grain additionally added to the upper layer is mixed and agitated to promote drying, and dry finished grain is stored in the A, B, or C series for short-term storage or long-term storage until hull shipment. The configuration is such that a storage form for storing and storing can be executed.

Reference numeral 47 denotes a circulating-type grain dryer provided in a plurality of units, which is connected to the supply line from the load receiving and weighing machine 4 and each discharge line of the A to C series to supply grain.
In addition, the grains discharged are rice hulling plant and C series bottle 11C.
It is configured to be returned to and stored in. The operation of the above example will be described.

The received high-moisture grain is received and weighed by the weighing machine 4.
After passing through, etc., they are sorted by a predetermined amount and placed in the B or C series bins 11B and 11C. Here, the air blow blows the thin-layered grain at a relatively high drying rate. After one day and night, these are either empty bottle 1
Combined in 1B or 11C and continued to dry. Although the dryness reduction rate in the thin layer state cannot be obtained, the drying continues moderately, and when it reaches the vicinity of the scheduled water content, it is transferred into the A series empty bottle 11A. Here, new consigned grain has already been poured, and the grain is mixed with the dried grain and dried. That is, when the support frame 23 moves back and forth by the motor 27 and the motor 30, or the moving frame 28 moves left and right, the stirring screws 21a and 21b move, but at this time, the motors 22a and 22b also rotate and the screw is rotated. 21a, 21
Since b is rotated, the grains are agitated in every corner, the grains having a water content difference are mixed, and the air is blown from below to be dried to a predetermined water content.

By the way, the stirring screws 21a, 2
1b is a movement pattern P₁→ P₂→ P _Three→ P_Four→ P₁Repeat
It is what is returned and executed. Therefore, the inner wall b
And the number of times along the virtual wall C is the pattern P₁~ P_Four1
By executing it three times, it becomes three times, and in other intermediate places
The number of times is two, and this pattern is duplicated for several hours.
Even if repeated several times, the relationship of the number of passages 3: 2 is maintained,
After all, it is possible to secure a large number of passages on the inner walls b, e, and d. Follow
Therefore, the number of times of stirring the grains near the inner wall, which is generally difficult to stir, is increased.
Can be formed and promotes grain flow near the inner wall surface,
To obtain a dry state close to.

In the above embodiment, a single bottle 11A is provided with a plurality of stirring screws 21a and 21b and moved in the same phase. However, when dividing this, the virtual wall c is the inner wall. And have the same effect. Further, the movement patterns P _{1 to} P ₄ are not limited to those in the above-described embodiment, and may be freely arranged except for the inner wall portion, and a short section distance may be different in front, back, left and right so as not to follow the same trajectory, or A configuration may be adopted in which the support frame 23 and the moving frame 28 are simultaneously driven to execute a zigzag-shaped trajectory.

The grain dried to a predetermined water content can be stored in the bottle 11A or the bottles B and C as it is. In addition, before transferring the agitated and mixed grain to the hulling process, check the water content, and the grain that has not been dried yet, or if urgent drying is necessary to secure an empty bottle, etc. , Dryers 41, 41, ...

In this embodiment, the bins 11A, 11B, 11
Although C is formed by a flat sweep floor, it is disclosed in JP-A-59.
An inclined floor plate as shown in Japanese Patent No. 183282 may be formed.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a screw movement pattern.

FIG. 2 is a plan view of the entire facility.

FIG. 3 is a front sectional view of a bottle.

FIG. 4 is a side view thereof.

FIG. 5 is an enlarged front sectional view of a main part.

FIG. 6 is a partial plan view thereof.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Receiving hopper, 2 ... Receiving yard, 3 ... Coarse selecting machine, 4 ... Receiving weighing machine, 5 ... Selector, 6 ... Hulling plant, 7 ... Operation room, 8
… Voluntary inspection room, 9… Product storage area, 10… Building, 11A, 1
1B, 11C ... Bottle, 12 ... Building, 13 ... Sweep floor, 14 ... Ventilation space, 15 ... Conveyor for staking, 16 ... Partition wall for sealing, 17 ... Compartment room, 18 ... Floor material, 19 ... Flight conveyor, 21a , 21b ... Agitating screw, 22a,
22b ... Drive motor, 23 ... Support frame, 24 ... Rail, 2
5 ... Rotating shaft, 26 ... Roller, 27 ... Forward / reverse motor, 28
... Moving frame, 29 ... Roller, 30 ... Forward / reverse motor, 35-
38 ... Limit switch, 39 ... Operation control unit, 40 ... Input circuit, 41 ... Output circuit, 42 ... Discharge conveyor, 43 ...
Wind tunnel, 44 ... Blower room, 45 ... Blower, 46 ... Heating device, 47 ... Circulation type grain dryer

Claims (1)

[Claims] 1. Bins 11A, 11A ... Which are polygonal in plan view and have a polygonal shape and receive and store grains are configured to supply drying air from the bottom and each bin is equipped with an agitator, In the one in which the supplied grains are dried during or after being dried and gradually dried, stirring screws 21a and 21b are arranged in the bottle in the longitudinal direction, and the screws move forward and backward or left and right. On the other hand, a control means for storing the movement pattern in advance so as to stir the substantially entire grain by rotation is provided, and the movement pattern is set such that the number of movements along the inner wall surface of the bottle is larger than the number of movements on the center side. A grain stirring device in a grain storage tank, which is characterized in that