JPH07280442A - Method of stirring grain in grain drying and storing device - Google Patents

Abstract

PURPOSE:To lessen the unevenness of grain drying in a square storing bin in a drying device provided with stirring screws in the storing bin to accelerate the stirring of the grain. CONSTITUTION:Two stirring screws are provided vertically in each storing bin and such screws are so constructed as to stir grains while rotatably moving back and forth or from side to side. The screw stirring method comprises, in combination, a first pattern P1 wherein, after the screw is rotatably moved from one corner part (a) of the four corners of the bin as a starting point and approximately along a predetermined inner wall surface (b), it is further moved along the entire surface and to the other corner part (c), a second pattern P2 wherein, after the screw is rotatably moved from the corner part (c) as a starting point and approximately along an inner wall surface (d) different from the inner wall surface (b), it is further moved along the entire surface and to another corner part (e) and third and fourth patterns P3 and P4 wherein the screw moves in the same manner approximately along the remaining inner wall surface (h), whereby the grains are stirred to reduce the height of accumulated grains near the inner wall surfaces so as to accelerate ventilation.

Description

Detailed Description of the Invention

[0001]

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

[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 to rotate the grain in the bottle while rotating the grain in the longitudinal direction to stir the grain. As described in Japanese Patent No. 24867, it is general to move in a zigzag shape.

By the way, the rotation of the screw causes the grain to rise, causing irregularities on the grain surface. Since the blown air is supplied from below, the drying is promoted toward the concave side. However, in the above-mentioned form, since the screw moves along a specific wall surface, the grain moves and becomes a recess, and it becomes a state in which the drying by the air blowing is easily promoted. Since the above grain accumulation state cannot be escaped and it is difficult to obtain a good air flow, uneven drying occurs.

[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. Arranged vertically, this screw is configured to agitate the grain by rotating while moving from front to back or left to right, and it moves substantially along a predetermined inner wall surface (b) starting from one corner (a) of the four corners. The pattern P ₁ which rotates while moving substantially all over the surface and reaches another different corner (C), and which follows the inner wall surface (D) different from the inner wall surface (B) starting from the corner (C). Rotate while moving Pattern P ₂ leading to further different corners by moving the surface (e), grains in the grain dry storage device for stirring treatment the grain by a combination of the pattern P ₄ moving along substantially the inner wall surface to remain in the same manner (h) stirring The configuration of the method.

[0005]

The function of the present invention: The grains stirred by the screws 21a and 21b cause the rotation of the grains to cause the neighboring grains to be heaped up. Height is reduced. By utilizing this tendency, it is possible to eliminate the unevenness of drying by promoting the air blowing of the grain in the vicinity of the inner wall surface of the bottle. That is, since the plurality of movement patterns are configured to first move along one of the inner wall surfaces of the bottle, the grain deposition height is reduced during the stirring action after the movement along the inner wall surface is finished, and ventilation is reduced. If it is good, it is a material that promotes dryness. Then, since the same processing is performed on different inner wall surfaces, there is an effect that drying processing on the wall is promoted over the entire bottle, and unevenness in drying can be reduced.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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.

Bins 11A, 11B and 11C are shown in FIGS.
As shown in FIG. 4, the same type of rectangular bottle is used, 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 made of normal wall material. . The bottoms of the bottles 11A, 11B, and 11C have a flat sweep floor 13 shape, and a ventilation space 14 is formed below the bottom.

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.
To provide. These screws 21a and 21b are an example of a stirring device, each of which is provided with a drive motor 22 and 22, and a support frame 23 of the screws 21a and 21b is a bottle 1
1 is configured to reciprocate back and forth along rails 24, 24 provided at the upper end, and further configured to reciprocate while maintaining a left and right screw interval in the direction along the support frame 23, thereby dividing a square bin into left and right. In addition to the zigzag shape, the entire surface can be stirred while moving 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, etc. 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,
23b, a movable frame 28 having a length about half of the right and left length of the support frame 23 is placed via rollers 29, 29 ... In a mounted state so as to be 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 ...

Rotation vertical shafts 31a and 31b are axially supported by the movable frame 28 at appropriate intervals on the left and right sides, and stirring screws 21a and 21b are connected to the lower portions thereof in a detachable and rotationally interlockable manner. Pulley 3 at the upper end of each rotating vertical axis 31a, 31b
2a and 32b are configured to rotate in a fixed direction by independent motors 22a and 22b, respectively. A movable frame 28 that can move to the left and right is placed on the support frame 23, and a motor is assembled to the support frame 23.
Since it can be installed on the rail with a and 21b set, the installation can be simplified. Further, the stirring screws 21a and 21b can be brought closer to the side wall of the bottle as compared with the conventional configuration in which the driving devices for traveling are separately provided, and the stirring flow is improved.

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. 34, 34 ... Discharge conveyors for discharge and rotation, which are in the form of a belt conveyor, and have the ventilation space 1
4, 14, ... Are provided at positions facing the wind tunnel 35 for each series.

A blower chamber 36 is provided in a state of being connected to the building 12 for the bins 11A, 11B, 11C, and blowers 37, 37, ... Are arranged in connection with the inlet of the ventilation space 14 for each series. 38 are heating devices, and the blower 37 can supply hot air to the ventilation space 14 by operating the heating devices.
The operation room 7 is provided with an operation control unit 39, which has an operation control mechanism for each part and a setting input mechanism. As an input signal,
Each of the motors 27, 30 and 2 is used as a weighing signal of the cargo receiving and weighing machine 4, a detection value signal of a squeezing amount detector described later, and an output signal.
Each drive signal to 2a and 22b, etc. are also included.

As the operation mode of the bins, since the amount of sticking for each bin 11 can be arbitrarily set by obtaining the weighing information from the cargo receiving and weighing machine 4, the bins of the bins B and C are spread. A dry main form in which the grain is thinned to obtain a relatively high drying loss rate, and in the A series, grains that have reached or come close to the finishing moisture from the B and C series have been dried, Agitated and dried form that mixes and agitates with new consigned grain that has been added or is additionally loaded on the upper layer, and short-term storage of dried finished grains in all A, B, C series until hull shipment or The configuration is such that it can be stored for a long period of time and can be stored.

In each of the bottles 11A, the stirring screws 21a and 21b are structured to be able to stir and mix the entire surface of the bottle 11A while drawing a predetermined pattern while keeping a constant interval. An example of the pattern is as shown in FIG. By the movement of the support frame 23 and the moving frame 28,
The stirring screw can be moved in this order. That is, the inner wall surface (b) in the front-rear direction is caused by the reciprocating movement of the support frame 23 from one corner (a) of the four corners of the bin A as a starting point.
The first pattern P ₁ reaching the different corner (c) is repeated by moving the movable frame 28 at the end of the forward stroke, moving the frame 28 left and right toward the center, and moving it again before and after the backward stroke. The second pattern P ₂ which moves left and right along the inner wall surface (d) starting from the portion (c), moves slightly in the front-back direction from the end thereof, and moves left and right again to reach the corner (e), the corner (e)
3rd pattern P ₃ that moves back and forth along the left-right center line (f) of the bottle 11A, moves slightly left and right at the end, and moves back and forth again to the corner (g), with this corner (g) as the starting point A fourth pattern P ₄ is set which moves left and right along the inner wall surface (h), moves slightly back and forth from its end, moves left and right again, and returns to the corner (b), and is configured to be repeated in order. ing.

Reference numeral 41 denotes a circulation type grain dryer provided in a plurality of units, which is configured to be connected to the supply line from the load receiving and weighing machine 4 and each discharge line of the A to C series for grain supply.
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, 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, thereby
The fourth patterns P ₁ , P ₂ , P ₃ , P ₄ are repeatedly drawn in this order, and the stirring screws 21a, 21b move. At this time, the motors 22a and 22b also rotate and the screws 21a, 21b.
Since 21b is rotated, the grains are agitated in every corner, the grains having a different water content are mixed, and the air is blown from below to be dried to a predetermined moisture value.

The screw 21a having the first pattern P ₁
When the grain has finished moving from the corner (a) to the corner (c), the cross section of the accumulated grain on the line L ₁ becomes as shown in FIG. 8 (a), and the vicinity of the inner wall surface (b) is formed low. In this part, drying by blowing air from below is well promoted.
Similarly, in the second pattern P ₂ , the accumulated grain on the line L ₂ has a cross section as shown in FIG. 8b, and the accumulated height of the inner wall surface (d) is low as in the case of the first pattern. Drying is accelerated.

For the fourth pattern P ₄ , the inner wall surface (h)
Is more accelerated than others. When the third pattern P ₃ is used, the grain deposition is low along the center line (f), but similarly along the line. As described above, since each pattern is set so as to follow the inner wall surface (b) (d) (h) first, these inner wall surface (b) (d) ( In (h), the deposition height is the lowest, and the amount of air blown is relatively large compared to other areas, and drying is promoted.

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 central line (f) part Has the same effect as the inner wall surface. Grains that have been dried to the specified water content are left in bottle 11
It can be stored in A or in bottles B and C.

It should be noted that urgent drying is required, such as checking the moisture content of the agitated and mixed grain before transferring it to the hulling process, grain that has not yet been dried, and urgent drying to secure an empty bottle. In this case, the dryers 41, 41 ... In this embodiment, the bin 1
Although 1A, 11B, and 11C are formed by a flat sweep floor, an inclined floor plate as shown in JP-A-59-183282 may be formed.

In the above embodiment, the first to fourth patterns are provided so that when one of the support frame 23 and the moving frame 28 is in the driving state, the other is stopped, but both are driven simultaneously. It may be configured in a zigzag form. Further, the contents may be changed without departing from the contents of the present invention. FIG. 9 shows an improved blast structure. Stirring screw 21
The shafts 42a, 21b are hollow shafts, the lower ends are open, and the upper half is provided with ventilation holes 43, 43 ...
The openings 43, 43 ... May be formed over the top and bottom of the shaft 42. In that case, the openings 43, 43 ... The air blown from the lower ventilation space 14 passes through the sweep flower 13 from the grain layer to the upper layer, but a part of the blown air enters from the lower end of the shaft 42 and the ventilation hole 4
It is possible to get out of 3,43 ... and act mainly on the upper grain layer. Therefore, the drying is promoted rather than relying on the air blown only from below. Further, since the air blown from the shaft 42 acts on the grains that are agitated and mixed by the screw,
It has the effect of high drying efficiency.

FIGS. 10 and 11 show another modified example in which air is blown to the upper grain, and a mountain-shaped reinforcing frame 45 is provided to connect the front and rear prisms 44 at the upper and lower middle portions at the left and right central portions of the bin 11A. Ventilation holes 46, 46 ... Are opened in the reinforcing frame 45. In addition, the inner wall surface (c) matches the height of the reinforcing frame 44.
(D) In (h), vent holes 47, 47 ... Attached plate 48 are bonded and fixed to the inwardly projecting portions of the corrugated side wall 11a to the partitions 11b, 11c to form a ventilation path 49 on the back surface thereof. Prism 4
Sweep floor 1 above ventilation space 14 along 4
3, a guide pipe 50 is provided so that the upper end of the guide pipe 50 is provided, and the ventilation opening 51 in the chevron-shaped reinforcing frame 45 and the ventilation path 4 are provided.
The back surface of the eaves portion 52 is viewed so that it can communicate with 9.

Therefore, a part of the air blown up from the ventilation space 14 enters the guide pipe 50, enters the air passage 51 in the mountain-shaped reinforcing frame 45 from the upper end thereof, and since the lower part is filled with the accumulated grains, this air is passed. From the pores 46, 46, it mainly acts on the grain in the vicinity of the blowing and promotes the drying. Further, the air blown into the back surface of the strip plate 48 has a corrugated side wall 1
Since it is joined to the convex portions of the partition 1a and the partitions 11b and 11c, the lower part is filled with grain to form the ventilation path 49, and the air blowing promotes the drying of the grain in the vicinity of the blowing from the ventilation holes 47, 47. In particular, the grain immediately adjacent to the inner wall surface is hard to reach the stirring and mixing action, and the above configuration has an effect of promoting grain drying in this portion. In addition, when only the air from the guide pipe 50 attached to the prism 44 is insufficient, the strips 4 adjacent to each other at the corner of the bin 11A as shown in FIG.
A guide pipe 53 having the same shape as the guide pipe 50 is erected between 8 and 48, and the upper end of the guide pipe 53 is looked into the lower part of the eaves portion 54 so that the blown air can be distributed right and left.

[Brief description of drawings]

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

FIG. 2 is a schematic flow chart of the facility.

FIG. 3 is a plan view of the entire facility.

FIG. 4 is a front sectional view of a bottle.

FIG. 5 is a side view thereof.

FIG. 6 is an enlarged front sectional view of a main part.

FIG. 7 is a partial plan view thereof.

[Fig. 8] Schematic explanatory view of grain surface

FIG. 9 is a front cross-sectional view of a bottle to which a blowing mechanism is added.

FIG. 10 is a diagram of a second embodiment in which a blower mechanism is added.

FIG. 11 is a partially enlarged perspective 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, 31
a, 31b ... Rotation vertical axis, 32a, 32b ... Pulley, 34
... Ejection conveyor, 35 ... Wind tunnel, 36 ... Blower room, 37 ...
Blower, 38 ... Heating device, 39 ... Operation control unit, 41 ... 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 being dried or mixed with dried grains to be 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. It is configured to agitate the grain by rotation while stirring, and one of the four corners (a)
A pattern P ₁ that rotates while moving substantially along a predetermined inner wall surface (b) and moves substantially over the entire rear surface to reach another different corner (c), with the corner (c) as a starting point. A pattern P ₂ that rotates while moving substantially along an inner wall surface (d) different from the inner wall surface (b) and moves substantially the entire rear surface to reach a different corner (e), and the inner wall surface (h) that remains in the same manner. A grain agitation method in a grain dry storage device, wherein a grain is agitated by a combination of patterns P ₄ that move substantially along the axis.