JP2001153561A - Grain storage bin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit the mixing effect of a mixing screw in the vicinity of wall of a bin, in a grain storage bin in a rice center or the like. SOLUTION: The grain storage bin 1 having a square or circular section is provided with a hanging mixing screw 12 for mixing grain while moving into a vertical or a radial direction. In such a grain storage bin, a trap 24 for inspection is provided on the inner wall of the bin 1 so as to be switchable between an operating posture, wherein the step unit 24a of the same is projected, and a non-operating posture wherein the step unit 24a is received in upward posture or downward posture while the approach of the mixing screw 12 to the vicinity of the wall is permitted upon the non-operating condition of the screw.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain storage bin in a rice center or the like.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 10-56872, for example, a stirring screw is provided in a grain storage bin to stir sedimentary grains with ventilation from below. To promote drying.

In a storage bin, it is necessary to periodically clean an outlet and a corner provided on the floor surface and to maintain each part. The floor is guided by an inspection ramp provided in a suspended posture on the inner wall of the bin. It has a configuration to come. However, because of the existence of the inspection ramp, there is a disadvantage that the stirring screw cannot be moved closer to the inner wall of the bottle and an unstirred portion remains near the wall.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to a storage bin having a square or circular cross section, in which a stirring screw for stirring and mixing grains while moving vertically and horizontally or radially is provided in a hanging manner. On the inner wall of the bottle, a grain storage bin is configured so that the inspection trap is suspended so as to be switchable between an operation posture in which the step portion projects over the step portion and a non-operation position in which the step portion is stored above or below.

[0005]

As described above, the inspection ramp can be switched between the operating position in which the step portion projects and the non-operating position in which the step portion is stored above or below. By folding the stirrer into the bottle, the movement of the stirring screw can be brought as close as possible to the inner wall of the bottle.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a grain storage bin, which is configured to cover an upper portion of a side wall 2 formed in a circular cross section with a top plate 3. Above the center of the top plate 3, a tensioning and equalizing mechanism 4 provided with a rotary diffusion plate
, And is configured to receive the transported grain from the upper flight conveyor 5 and evenly spread the grain into the storage bin 1.

[0007] In the storage bin 1, an inspection passage 6 is provided toward the front and rear of the center. There is a portion of the passage 6 just below the tensioning / equalizing mechanism 4, and the left and right main frames 6a, 6a are formed by foot mounting frames 6b, 6b,... Having an appropriate width so that the grain does not stay on the passage. It is configured as a connecting ladder. Reference numerals 6c and 6c denote handrails.

[0008] A part of the footrest frame 6b is firmly formed, and the vertical support shaft 7 is supported. The lower end of the rotation support shaft 7 supports the inner end of the horizontal support shaft 8. A small-diameter roller 9 is provided at the outer end of the horizontal support shaft 8,
The roller 9 is mounted on and supported by a rail 10 provided on the inner wall of the storage bin 1, so that the horizontal support shaft 8 can circularly move in a horizontal plane around the inner end with the driving of the motor 11.

The horizontal support shaft 8 has a stirring screw 1
2 is provided in a hanging manner. That is, each of the base ends is supported by a transmission case 13, 13... Provided to reciprocally drive the horizontal support shaft 8 along the axial direction of the horizontal support shaft 8, and the stirring screw 1
The stirring screw 12 is configured to receive a part of the driving force of the transmission case 13 and rotate in conjunction therewith. In addition,
The reciprocating drive of the transmission case 13 with respect to the horizontal support shaft 8 is performed by rotating the transmission case 13 in the radial direction by a forward rotation drive based on a forward / reverse command signal of a drive motor (not shown) while keeping the distance between the adjacent transmission cases 13 constant. The transmission case 13 moves outward and the transmission case 13 moves toward the rotation center by the reverse rotation based on the reverse rotation command signal.

[0010] The bottom of the storage bin 1 is in the form of a flat sweep floor 14, and a ventilation space 15 is formed below it. A blower 16 is connected to one side of the ventilation space,
A dust collector 17 is connected to the upper space inside the bottle 1. Reference numeral 18 denotes a discharge valve provided in the ventilation space 15, and 19 denotes a flight conveyor. The sweep floor 14
Is provided with a discharge screw 20 for moving the grain to be accumulated toward the center side and sending it out from the central opening to the discharge valve 15. The screw 20 is configured to be able to discharge grains on the entire surface of the floor 14 while rotating around the center.
In order to assist or promote the discharge property of the discharge screw 20, a sweeping brush 21 is provided, and the rear portion of the discharge screw 20 is configured to be able to follow, thereby minimizing the amount of grain remaining on the floor 14. sell.

An inspection ramp 2 is provided on the inner wall of the storage bin 1 so as to be able to move from the terminal side of the inspection passage 6.
3, 24 are provided. The inspection ramp comprises a relay ramp 23 on the upper side and a main ramp 24 which is continuous with the relay ramp 23 and is provided so as to reach the floor 14. this house,
The relay ramp 23 has a plurality of steps and a hand-held portion 23a at a proper distance from the inner wall, and a plurality of steps and a hand-held portion 23a are always fixed. The main frames 24b, 24b fixed close to the inner wall are provided so as to connect the left and right sides,
At the connection point, the step portion 24a is configured to be rotatable up and down. Are connected by a rope 25, and the fixed lock hook plate 2
4c, 24c...
a ... and a rope 2
5, the uppermost step portion 24a is locked by the storage hook 26 as it is, and the step portion 24a,
24a... Can be switched to the storage posture in which they do not protrude.

Reference numeral 27 denotes an inspection cover 6 from the inspection lid 28 on the ceiling.
It is an entrance ramp provided before reaching The operation of the above example will be described. Grain from the flight conveyor 5 is loaded into the grain storage bin 1 via the filling equalizing mechanism 4. After the insertion, the blower 16 is driven to start ventilation drying. The storage bin 1 may be charged with grains having different moisture values, but can be dried by stirring up and down. That is, by rotating the horizontal support shaft 8 along the rail 10 while rotating and driving the stirring screws 12, 12,..., The grain can be stirred over substantially the entire surface. The transmission cases 13, 13,...
, The grain can be stirred up to the wall, but at this time, the main trap 24
Are placed in the storage position by the action of the storage hook 26, the number of protrusions into the bottle can be reduced, and the stirring screw 12 can be moved as close to the wall as possible. The grain can be agitated to every corner.

When entering the storage bin 1 for inspection or for cleaning the floor 14, for example, the user passes the entrance ramp 27 from the inspection lid 28 and once stands in the inspection passage 6.
Then, it is possible to reach the floor 14 via the relay ramp 23 and the main ramp 24. At this time, the step portions 24a, 24a,.
Is released from the storage hook 26 for convenient lifting and lowering.

FIG. 4 shows a different example of the grain discharging mechanism. The discharging auger 30 is disposed below the sweep floor 14 and is directed toward a flight conveyor 19 disposed so as to pass through the lower center of the storage bin 1. In order to sweep out the grains on the sweep floor 14 into the discharge auger 30, a sweeping brush 31 and an air pipe 32 holding the sweeping brush 31 are to be transferred.
Are swung with the center of the bin fixed, and can reach the discharge auger 30 while acting on the entire surface of the sweep floor 14. The air pipe 32 is provided with a plurality of small holes in the middle thereof, so that the movement of the grains can be promoted by air blowing, and the efficiency of the brush action can be improved. Although a drive mechanism and an air supply mechanism of the air pipe 32 are not shown, various forms may be used.

FIGS. 5 to 7 are explanatory views of another grain discharging mechanism. A plurality of outlets (four in the example) 40a, 40b, 40c,
40d, and each delivery valve 41a, 41b, 41c,
The grain can be discharged from a predetermined outlet by the operation of 41d. In addition, for example, 41a → 41b
The delivery valve is operated in the order of → 41c → 41d to discharge the internal grains in such a manner that the internal grains are sequentially broken from one side. In addition, if a method is employed in which all or a plurality of the discharge valves provided are simultaneously driven at once, the capacity of the discharge valve itself can be reduced, and power saving and cost reduction can be achieved.

Further, the above sequential discharge ports 40a, 40b,
In discharging the grain from 40c and 40d, blower 1
In order to maximize the six capabilities, there is a method shown in FIG. In other words, the inside of the air passage 6 is divided into, for example, eight sections as shown in FIG. 5, and the airbag 4 can block the air path for each section.
2, 42 ... are provided, and the air path is shielded by an airbag so that the cereal can be easily collected at a target discharge port, or the upper part of the floor 14 where no cereal is present can be closed to prevent waste air. is there. Thereby, the blowing capacity can be used effectively.

FIG. 8 shows a dust collecting structure when a plurality of circular storage bins 1 are installed. Conventionally, the flight conveyor 5 for embedding grain is provided in the inspection corridor 47 space in the roof 45 and the partition wall 46 provided on the top plate 3 for rain protection,
On the other hand, the dust collecting duct 48 is usually configured separately (FIG. 1). By the way, it is intended to reduce the cost by also using these, and the storage bins 1, 1,...
Is connected to the dust collecting device 17 and the duct 49 is provided with a flight conveyor 5 for insertion. As a result, the members can be shared, and the cost can be reduced.

The flow chart shown in FIG. 9 relates to the air volume control when the grain is loaded into the storage bin 1. When the amount of storage at the time of loading is small, the air volume becomes a problem, and there is a drawback such as excess wind flowing backward on the transport path and blowing off the grain. For this reason, measures such as stopping the blower halfway are taken, but this may cause deterioration of grain quality. Therefore, the following means are used to secure an appropriate air volume. That is, in the configuration of FIG.
A damper 50 is provided at the outlet of the motor.
1 makes it controllable. A grain presence / absence sensor 52 is provided on the grain conveyor flight conveyor 5, and when this sensor 52 operates with grain, the damper 50 is made to stand by in a closed posture at the initial setting position. When the sensor 52 detects that there is no grain, the damper 50 is fully opened after a predetermined time. On the other hand, when the opening / closing operation of the damper 50 is repeated a predetermined number of times (for example, three times), the control unit 53 obtains an average value of the wind speed by the separately provided air flow sensor 54, and determines the opening degree of the damper 50 from the next time onward.
It is determined whether the value should be set larger or smaller than the initial set value.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a grain storage bin.

FIG. 2 is a side sectional view of a grain storage bin.

FIG. 3 is a side view of a main part.

FIG. 4 is another example of a discharge mechanism.

FIG. 5 is a plan view showing still another example of the discharge mechanism.

FIG. 6 is a front sectional view of a part of FIG. 6;

FIG. 7 is a side sectional view of a part of FIG. 6;

FIG. 8 is a sectional view of a facility provided with a plurality of bins.

FIG. 9 is a flowchart.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Grain storage bin, 2 ... Side wall, 3 ... Top plate, 4 ... Equalizing mechanism, 5 ... Flight conveyor, 6 ... Inspection passage, 6a ... Main frame, 6b ... Foot frame, 6c ... Handrail, 7 ... Rotary support shaft, 8
... horizontal support shaft, 9 ... roller, 10 ... rail, 11 ... motor, 12 ... stirring screw, 13 ... transmission case, 14 ...
Sweep floor, 15: ventilation space, 16: blower, 17
... dust collector, 18 ... discharge valve, 19 ... flight conveyor, 20 ... discharge screw, 21 ... sweeping brush, 23
... Relay ramp, 24 ... Main ramp, 24a ... Step and hand-held part, 23b ... Main frame, 24c ... Fixed lock hook plate, 25 ... Rope, 26 ... Storing hook, 27 ... Entrance ramp, 28 ... Inspection lid

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Kyohei Honda 1-Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. F-term (Reference) 3L113 AC31 AC40 AC46 AC49 AC50 AC51 AC54 AC56 AC57 AC58 AC63 AC72 AC73 AC75 AC76 AC78 AC79 AC83 AC90 BA03 CA06 CA11 CB23 CB24 CB28 CB29 CB34 CB35 DA01 DA02 DA06 DA24

Claims (1)

[Claims] 1. A storage bin having a square or circular cross section,
A stirrer screw that stirs and mixes grains while moving vertically and horizontally or in the radial direction is provided in a hanging manner. Grain storage bins that can be switched to a non-operating position.