JPH0928176A - Grain stirrer in grain reservoir - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent interference of stirring screws to a bin inner wall face by flow variation unhulled rice in passing of the screws near the inner wall face. SOLUTION: Bins 11A, 11A,... having polygonal shapes such as a square in a plan view, receiving and reserving grain are constructed to be supplied with the drying air from bottom faces. Each bin has a stirrer and grain supplied in turn is mixed with grain in drying or has been dried and gradually dried. In the bin, stirring screws 21a and 21b are longitudinally arranged and the screws stir grain in almost whole face by rotation with transferring longitudinally or to left and right. A controller making the screws intermittently transfer along a prescribed inner wall face with continuing the rotation is installed. Thus, when the screws themselves tend to approach to a fixed face, inclinations of the screws are corrected to avoid stagnation of the transferring.

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 in the vicinity of 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 screw itself is pushed in the direction opposite to the fixed surface and tilts. There is a fear. Therefore, the tip of the screw interferes with the inner wall surface. It was necessary to improve it because it did not correspond to the desire to stir the inner wall surface as close as possible.

[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 almost the entire grain by rotating while moving forward and backward or left and right, and when moving along a predetermined inner wall surface, the screw moves while continuing to rotate. The grain agitating device in the grain storage tank is provided with a control means for intermittently executing.

[0005]

The operation and effect of the invention is such that the screw moves forward and backward or left and right to agitate the grain on substantially the entire surface by rotation, but when it moves along a predetermined inner wall surface, the rotation is controlled by the control means. Since the movement is intermittently executed while continuing, even if the screw itself tries to approach the fixed surface, the inclination of the screw is corrected when the movement is stagnant, and the above-mentioned drawbacks can be solved. .

[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.

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.
Is provided. 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 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 ...

The moving frame 28 is a pair of front and rear frame parts 2.
It is composed of 8 ₁ and 28 ₂ . These frame parts 28 ₁ ,
The support frame 31 located at the interval of 28 ₂ is freely slidable in the vertical direction at four locations, and is regulated by the compression springs 32, 32. On the other hand, it is configured to be swingable back and forth or left and right. Then, a rotating vertical axis 33 is pivotally supported on a plate portion which opposes the upper and lower sides of the support frame 31, and a motor 22a is attached to an extension portion of the plate portion, and is rotated in a certain direction by a pulley 34 at an upper end of the rotating vertical axis 33. Is configured to

Stirring screws 21a and 21b are detachably and rotatably interlocked below the rotary shafts 33a and 33b. Limit switches 35, 36, 3 for inputting respective movement limits to the support frame 23 and the movement frame 28.
7, 38 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 to turn on the operation control unit 3.
9 is input via the input circuit 40. Similarly, moving frame 2
The limit switches 37 and 38 provided in FIG.
And the operation control unit 3 via the input circuit 40 as well.
9 is input.

The operation control unit 39 has an operation control mechanism for each part and a setting input mechanism, and is configured to output drive signals to the motors 27, 30 and 22a, 22b via an output circuit 40 '. 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 of the symbols. The support frame 23 is driven at the end of the forward stroke (the virtual wall C at the center of the left and right of the bin) by moving the moving frame 28 to the right by the reciprocating motion of the four corners of the bin A as the starting point and reciprocating. Then, the support frame 23 is moved a little closer to the front and again to the left in the backward stroke, and when the inner wall surface D corresponding to the virtual wall C is reached, the support frame 23 is further moved forward. By repeating such an operation, a short section is moved forward until the limit switch 35 is turned on, and after the turning on, the pattern P reaching the corner along the inner wall surface e is repeated in sequence ( (Fig. 1).

When moving along the inner wall surfaces b, d, e, and the virtual wall c in the above pattern () (), the operation control unit 39 executes the following operation. That is, the built-in timer mechanism operates to set the operating time of the motor 27 or 30, and the motor is intermittently operated. During this period, the stirring screw motor 22a is provided so as to maintain constant rotation. Although the above description has been made for the left half of the bin, the same applies to the right half.

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. 41, 41 ... 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 42 for each series.

A blower chamber 43 is provided in a state of being connected to the building 12 for the bottles 11A, 11B, 11C, and blowers 44, 44, ... Are arranged in connection with the inlet of the ventilation space 14 for each series. The heating devices 45, 45 ... Allow the blower 44 to 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 is a circulation 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, with the movement pattern P, the screw 2
When 1a moves from the corner a to the corner, the inner wall surface b,
When moving along e and the virtual wall c, the motor 27
Or, 30 is a so-called intermittent operation in which the operation and the stop are repeated, and the disturbance of the stirring operation from the bottom to the top of the paddy is reduced, and in addition, it can be simply configured without having a special transmission device or the like.

Referring to the flowchart of FIG. 7, when the stirring screw is located at the corner B, a rotation command signal is first output to the stirring screw motors 22a and 22b (step 1), and then the rotation timer for the moving frame 30. The stop timer is set (step 2). Only the screw is driven for the stop timer set time to rotate,
When the time set by the stop timer has elapsed (step 3), a normal rotation signal is output to the motor 30, the moving frame 28 moves to the right (step 4), and when the rotation timer is up (step 5), the motor stops again. When such an intermittent operation is repeated along the inner wall surface b to reach the moving end where the limit switch 37 is turned on (step 6), the rightward movement of the moving frame 28 ends.

Next, the front and rear positions are changed to change the phase of the stirring point. Therefore, the rotation timer and the stop timer of the motor 27 for the support frame 23 are set (step 7). Initially, only the stirring screw rotates while the support frame 23 is stopped, and when the timer is up (step 8), a forward rotation signal is output to the motor 27 and the moving frame 23 moves forward (step 9). When the predetermined rotation time elapses (step 1
0), the support frame 23 is again stopped and output. In this way, the stop movement is repeated (step 11), and when the front side movement of the predetermined short section is performed, the movement of the movement frame 28 to the left is executed with the support frame 23 stopped (step 12). At this time, the movement is executed until the limit switch 38 is turned on without stopping over the entire process from the virtual wall c to the inner wall surface d.

By combining such left-right movement and forward movement of a predetermined short section, it is possible to finally reach the corner with intermittent movement along the inner wall surface e. In addition, in order to return from the corner e to the original corner a, intermittent operation may be performed along the inner wall surface d, or a configuration in which the operation returns to the corner a while moving in the direction opposite to the example. In the above embodiment, a single bin 11
Although a plurality of stirring screws 21a and 21b are provided in A to move in the same phase, when dividing this, the portion to the line serves as an inner wall surface and has the same effect.

Grains dried to a predetermined water content can be stored in the bottle 11A or the bottles B and C as they are for storage. Before transferring the agitated and mixed grain to the hulling process, check the water content, if the grain has not been dried yet, or if the bottle needs to be emptied by urgent drying, etc. , Dryers 41, 41, ...

In this embodiment, the bins 11A and 11A are
Although B and 11C were formed with a flat sweep floor,
It is also possible to form an inclined floor plate as shown in JP-A-59-183282. In the above-described embodiment, since the support frame 31 is supported by the moving frame 28 via the compression springs 32, 32, ... While the supporting frame 23 and the moving frame 28 are moving, the stirring screws 21a, 21b are not affected by grain resistance. When it acts, the support frame 31 tilts in an arbitrary direction, and the stirring screws 21a and 21b also take a tilted posture with respect to the vertical line.

Inclination sensors 50a and 50b capable of inputting the inclination angle of the stirring screw 21a or 21b with respect to the moving frame 28 are connected to the operation control section 39. The inclination sensor 50a or 50b is used for the support frame 3
1 is appropriately fixed, and when it is confirmed that it is tilted at a predetermined angle or more, the driving output to the motor 27 or 30 is stopped, and the supporting frame 23 or the moving frame 28 that is moving is moved.
Can be stopped. Screw 21
It is possible to prevent damage to the bearing portions of a and 21b, the mounting portions, and thus the screw itself.

As the inclination sensors 50a and 50b, for example, as shown in FIGS. 10 and 11, a spherically shaped sensor body 56 is slidably fitted in a spherical concave portion of a fixed base 55. A plurality of photoelectric switches 51a to 5 are provided on the upper half thereof.
1e is provided, that is, switches 51b and 51c are provided on the left and right, and photoelectric switches 51d and 51e are provided on the front and back with the photoelectric switch 51a as the apex.
These photoelectric switches are turned on in response to the reflected light from the donut-shaped reflector 52 that floats in the air, and in which direction the sensor main body that tilts to the front, rear, left, and right is used to change the relative position. Is configured to be able to judge. Since the photoelectric switch 51a at the apex can maintain ON in a predetermined angle range due to the presence of the small-diameter reflector 53 immediately below, for example, 51a: ON, 51b: OFF, 51c: OFF, horizontal state, 51a: ON. , 51b: ON, 51c: OFF, a left tilt state of a predetermined angle 51a: ON, 51d: OFF, 51e: ON, a rear tilt state of a predetermined angle can be represented. Reference numeral 54 is a connector for connecting the reflector 52 and the small-diameter reflector 53.

FIG. 12 shows a modification of the movement pattern in which a rectangular storage bottle is provided with stirring screws 21a and 21b for stirring and drying. There are two types of movement patterns P ₁ and P ₂ prepared for the operation control unit 39. Among them, the movement patterns P ₁ have rough traveling intervals (pitch) that are adjacent to each other. In one example, the movement distance L from the start position to the end is L. ₁ = 45m
(Required time t ₁ = 6 hours), in the case of the movement pattern P ₂ , the traveling intervals are close and the movement distance L ₁ = 63 m from the start position to the end (required time t ₁ = 8.5 hours). ). Depending on the grain moisture value to be input, the classification of such running intervals depending on the density is performed. That is, in the case of additionally inserting high moisture paddy and drying while stirring, in order to prevent the deterioration of the stored grain at the time of additional charging, first, the stirring is performed quickly with the movement pattern P ₁ and then with the movement pattern P ₂ without fail. Perform agitation. In this way, the variation in water content of the grain as a whole can be eliminated. Generally, the movement pattern is fixed and the traveling speed is changed to slow or slow, but if the speed is increased, excessive grain resistance may occur and the screw mounting part, bearing part, and eventually the screw itself may be damaged. Therefore, it can be resolved.

The agitation screws of the above embodiment are provided in a pair on the left and right. Therefore, the stirring action is performed while drawing the same movement pattern on the left and right in a single bottle. Therefore, a region where the screw does not act is formed in the left and right central portions (virtual wall C), and various sensors can be arranged using this region. For example, the reinforcing material 61 is bridged back and forth along the virtual wall C, and the grain thermometer 62 and the amount sensor 63 of the grain are provided in a hanging shape. Therefore, it is possible to collect grain data at a plurality of upper and lower locations without being affected by the stirring screws 21a and 21b. The grain thermometer 62 has a plurality of thermistor-shaped temperature elements arranged in a string-like body at predetermined intervals. The amount sensor 63 has a structure in which pressure-sensing elements are arranged on the belt-shaped resin plate at predetermined intervals and the presence or absence of grain can be detected by pressure. The lower end of each string-shaped body or strip-shaped resin plate may be connected to the floor so as not to be drawn into the stirring area by the grain flow during grain discharge.

[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.

FIG. 7 is a flow chart diagram.

FIG. 8 is a partially exploded perspective view of a moving frame.

FIG. 9 is a front view thereof.

FIG. 10 is a front view of the tilt sensor.

FIG. 11 is a partial plan view thereof.

12A and 12B are schematic diagrams showing an example of a movement pattern.

FIG. 13 is a plan view of a bottle.

[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, 28 ₁ , 28 ₂ ... frame part, 29 ... roller,
30 ... Forward / reverse rotation motor, 31 ... Support frame, 32 ... Compression spring, 33 ... Rotation vertical axis, 34 ... Pulley, 35-38 ... Limit switch, 39 ... Operation control section, 40 ... Input circuit,
40 '... Output circuit, 41, 41 ... Discharge conveyor, 42 ...
Wind tunnel, 43 ... Blower room, 44 ... Blower, 45 ... Heating device, 47 ... Circulation type grain dryer, 50a, 50b ... Inclination sensor, 51a-51b ... Photoelectric switch, 52 ... Reflector,
53 ... Small-diameter reflector, 61 ... Reinforcing material, 62 ... Grain thermometer,
63 ... Strain amount sensor

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. While being configured to agitate almost the entire grain by rotation,
When moving along a predetermined inner wall surface, a grain agitating device in a grain storage tank provided with a control means for intermittently performing the movement while continuing rotation.