JPH08233462A - Agitator for grain dry-storage facility - Google Patents

Abstract

PURPOSE: To dry uniformly the whole inside of a grain dry-storage tank evenly by connecting a discharge port at an upper end of an agitation rod to the suction side of a grain-sucking up device while a release port of the grain-sucking up device is opened in the tank to stir up the grains on the bottom part of the grain-storage tank efficiently. CONSTITUTION: With the rotation of two blades of a blower section 29, grains (m) are sucked up together with dry air from a lower layer part of a grain dry-storage tank through the inside of an agitation rod 18 and released at an exhaust port 32 through a metal screen 33 of an air separation chamber 30 so that the grains (m) are accumulated at a lower part of the air separation chamber. A transfer roll 31 forms a blade spiral on the lower outer circumference of a rotating shaft, and the tip thereof is made to protrude into the metal screen 33 of the air separation chamber 30 so that the grains (m) accumulated in the air separation chamber 30 are lifted up to the exhaust port 32 being rotated and blown by an exhaust from a blower section 29 to be scattered in the grain drying storage tank. By this device, a uniform agitation of the grains in the grain drying storage tank can be carried out to dry completely.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art When storing harvested grain in a grain dry storage tank, raw rice immediately after harvest has a high water content of around 25%, and if it is accumulated for a long time, it will deteriorate. Need to be dried up to about%. Therefore, conventionally, a large number of holes are provided in the floor plate of the grain dry storage tank to have a structure with good air permeability, and the drying air is sent into the tank through this floor plate to aerate and dry the grain during storage. At this time, the grains in the grain dry storage tank are stirred and mixed, and the dried grains at the bottom of the tank are lowered to the upper layer, and the moisture-rich grains at the upper layer are lowered to the bottom, whereby the whole of the tank is A uniform degree of dryness is used.

For agitation of grains, a movable table that travels in the front-rear direction is provided above the storage tank, and a dolly that moves left and right on the movable pedestal. The dolly is provided with spiral blades on the outer circumference. The stirring rod is suspended vertically, and the stirring rod is rotated to move inside the tank to uniformly stir the grains.

However, the free end of the stirring rod reaches near the floor plate, but a gap is inevitably formed between the stirring rod and the floor plate, and the lower-layer grain has a heavy weight of the accumulated grain. Since it is pressed by the pressure, the grain between the stirring rod and the floor plate cannot be transferred to the upper layer, and remains indefinitely and remains stagnant, resulting in excessive drying. As a measure against this, grains that have been excessively dried to a moisture content of about 12% in the lower layer of the grain dry storage tank are taken out to the outside by a discharge conveyor provided at the bottom of the grain dry storage tank, and then raised by a lifting device. Lift above the dry storage tank,
A method of adjusting the water content by mixing it with newly added grains can be considered, but it is not possible to sufficiently eliminate the unevenness of drying.

In order to solve the above-mentioned conventional problems, an object of the present invention is to efficiently agitate the grains at the bottom of the grain drying storage tank so as to uniformly dry the entire inside of the vessel.

[0005]

In order to achieve the above object, in the present invention, the central axis of rotation of the stirring rod is formed into a hollow cylinder, and the free end at the lower end thereof is opened to form a suction port, and the discharge port at the upper end of the stirring rod is formed. Was connected to the suction side of the grain wicking machine, and the outlet of the grain wicking machine was opened in the grain dry storage tank.

[0006]

By virtue of such construction, in the present invention,
Using the lower end of the rotation center axis of the stirring rod as a suction port, the grains with advanced dryness in the lower layer of the grain storage tank are sucked up by the grain suction machine through the hollow rotation center axis, and the grain suction machine By spraying on the grain accumulated from the discharge port, in addition to the upward movement of the grain by the blade of the conventional stirring rod, the grain of the lower layer is conveyed to the upper layer through the central axis of rotation and efficiently. Stirring is possible and the grains in the tank can be dried uniformly.

[0007]

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a front sectional view of a grain dry storage facility provided with a stirring device of the present invention, and FIG. Reference numeral 1 is a grain storage warehouse, in which the outer wall and roof of the building have a square corrugated iron plate and a heat insulating material attached to the inside to provide a heat retaining structure. The inside of the grain storage warehouse 1 is vertically and horizontally divided by a partition wall 2 to form a grain dry storage tank 3. The floor plate 4 of the grain dry storage tank 3 is provided with a large number of ventilation holes having a diameter that does not allow the grains to fall, thereby forming a structure having high air permeability. A grain discharge port 5 is formed in one corner of the floor plate 4, and a discharge rotation conveyor 6 extending in the front-rear direction is provided under the floor immediately below the discharge port 5.
Is installed, and a hopper 7a is provided at the end of the
Transfer dry grain from to another processing workshop. An air guide passage 8 is formed below the floor board 4, a blower port of a blower (not shown) is connected to the air guide passage 8, and dry air is supplied to the air guide passage 8 to dry the grain from the floor board 4. Dry air is sent to the grains in the storage tank 3 to dry the grains.

A beam 9 is passed over the grain dry storage tank 3 and fixed to the side wall of the building and the partition wall 2. Reference numeral 10 is a monitoring passage for monitoring the operating condition. Reference numeral 11 is a staking conveyor, the end of which is a moving conveyor 12 via a hopper 7b.
Connect to. The moving conveyor 12 moves on the rail 9 a along the beam 9.

The grain is transferred from the stake conveyor 11 to the hopper 7b.
After that, it flows to the moving conveyor 12 and then passes through a spraying device 13 provided at the front and rear ends of the moving conveyor 12 and is dropped to the grain dry storage tank 3 below. The moving conveyor 12 moves in the front-back direction centering on the hopper 7b of the tension conveyor 11, and reverses the traveling direction of the conveyor belt to change the dropping position of the grains, and to sequentially dry and store all the grains. The grain is supplied to the tank 3. Reference numeral 14 denotes a guide rail having a mountain-shaped cross section, and a moving wheel 15a is placed on the guide rail to support the moving base 16.

FIG. 3 is a front view showing the stirring apparatus of the present invention with a part omitted, and the moving table 16 includes a moving table moving apparatus 17
Is provided and moves on the guide rail 14 in the front-rear direction by the moving wheel 15a. Further, the moving wheel 16 is moved on the moving table 16
Is equipped with a trolley 20 that moves in the left-right direction.
0 is provided with a truck moving device 22 for driving the driving wheel 15b, a grain sucker 24, a stirring rod driving device 19, and stirring rods 18 at both left and right ends of the truck 20, respectively. It is suspended in the storage tank 3. The stirring rod 18 has spiral hollow continuous blades 21 formed on the outer circumference of a hollow cylindrical rotation center axis, and further has a hole for blowing dry air at a predetermined position on the cylindrical outer wall, and the lower end portion is deposited as a free end. It is inserted between the grains. The upper part of the stirring rod 18 is a trolley 20.
The stirring rod 1 is supported by being connected to the stirring rod driving device 19 above.
The upper end of 8 is rotatably fitted into the suction port 25 of the grain suction device 24. In this state, the stirring rod drive device 19 rotates the stirring rod 18, the blades 21 on the outer periphery of the stirring rod 18 move the surrounding grains m upward, and the grain sucking machine 24 moves the grains in the lower layer. m is sucked together with the dry air sent through the floor plate 4, and when passing through the stirring rod 18, a part of the dry air is discharged to the grain m in the intermediate layer, and the dry air and the grain m are separated at the upper end to separate the grain. m is sprinkled on the upper-layered grains, and the dried lower-layered grains are mixed with the just-laden upper-layered grains to dry the whole grains in the tank as uniformly as possible.

FIG. 4 is a sectional side view showing the details of the stirring rod and the grain sucking machine according to the embodiment of the present invention. The upper end of the stirring rod 18 projects above the carriage 20 and is rotatably supported by the bearing 23. Then, the drive pulley 26 of the stirring rod drive device 19 is fixed to the outer periphery thereof. The V-belt 28 receives power from the drive motor 27 to rotate the stirring rod 18. Further, the tip of the stirring rod 18 is rotatably fitted into the suction port 25 of the grain suction device 24. The grain suction device 24 includes a blower unit 29, an air separation chamber 30 that separates the grain and dry air, and a transfer roll 31 that transfers the separated grain upward. By driving the belt from the drive motor 27a, the two blades of the blower unit 29 and the transfer roll 31 are rotated. Blower part 29-2
By rotating the blades, the inside of the air separation chamber 30 communicating with the suction port 25 is set to a negative pressure, and the grain m is sucked out together with the dry air from the lower layer of the grain dry storage tank 3 through the stirring rod 18 and sucked. The crushed grain m and the dry air enter the air separation chamber 30, the dry air enters the blower part 29 through the wire net 33 of the air separation chamber 30, is discharged from the exhaust port 32, and the grain m is blocked by the wire net 33 and remains as it is. Collect in the lower part of the air separation chamber 30. The transfer roll 31 has a blade formed in a spiral shape on the outer periphery of the lower part of the rotating shaft, and its tip projects into the wire net 33 of the air separation chamber 30 to lift the grain m accumulated in the air separation chamber 30 to the exhaust port 32 by rotation. The air is blown away by the exhaust air from the blower unit 29 and scattered in the grain dry storage tank 3 so that it is distributed in a wide range. On the upper part of the transfer roll 31,
The air from the blower unit 29 causes the grain m to move into the air separation chamber 30.
A backflow preventive valve 34 is provided so as not to fall down, and the backwind preventive valve 34 is operated in a state where the grain m is accumulated, and the grain m is discharged into the grain dry storage tank 3.

FIG. 5 shows another embodiment of the present invention, in which a hopper 7b connected to the feeding conveyor 11 is provided at the center of the ceiling of the cylindrical grain dry storage tank 3, and the grain is dried and stored from the hopper 7b. Apply evenly to the tank 3. A rotary shaft 35 that is rotated by an electric motor (not shown) is provided below the hopper 7b, and a movable base 16 that rotates horizontally at the tip of the rotary shaft 35 and a movable base 16
A plurality of trolleys 20 are provided that move radially upward. A stirring rod 18 equipped with a grain sucker 24 is suspended on a dolly 20, sucks a lower-layer grain from a suction port 25 at the lower end of a hollow cylindrical rotation center axis, and sucks the sucked grain into a grain. From the exhaust port 32 of the grain sucker 24 to the rotary shaft 3 by a flexible pipe 36.
It is carried to the suction and discharge device 37 provided in No. 5, and sprayed and sprinkled on the upper grain. While the stirring bar 18 rotates, the rotating shaft 35
The moving table 16 turns around the center of the moving table 16 and the stirring bar 18 moves on the moving table 16 in the radial direction to stir the inside of the grain dry storage tank 3 without leakage, and the grain sucking machine 24.
By sucking the lower grain to the upper layer and spraying it,
The grains in the grain dry storage tank 3 can be uniformly dried and stored.

[0014]

As described above, according to the present invention, the central axis of rotation of the stirring rod is formed in a hollow cylindrical shape, and the grains accumulated in the lower portion of the grain dry storage tank are sucked through the hollow portion and moved to the upper portion to stretch the grain. By mixing with the grains that have just been mixed, the grains in the bottom layer remain immovable and do not overdry, and at the same time, the grains are moved upward by the spiral blade provided on the outer periphery by the rotation of the stirring rod. By moving, the grains in the grain dry storage tank can be uniformly stirred and dried.

[Brief description of drawings]

FIG. 1 is a front sectional view of a grain dry storage facility provided with a grain stirring device of the present invention.

FIG. 2 is a cross-sectional view of a main part of the side surface of FIG.

FIG. 3 is a partially omitted front view showing the stirring device of FIG.

FIG. 4 is a cross-sectional side view of essential parts showing a stirring rod and a grain suction device according to an embodiment of the present invention.

[Explanation of symbols]

 1 Grain Storage Warehouse 2 Partition Wall 3 Grain Dry Storage Tank 4 Floorboard 5 Discharge Port 6 Discharge Rotation Conveyor 7 Hopper 8 Wind Guide 9 Beam 10 Monitoring Passage 11 Strain Conveyor 12 Spreading Conveyor 13 Spreading Device 14 Guide Rail 15 Driving wheel 16 Moving table 17 Moving table moving device 18 Stirring bar 19 Stirring rod driving device 20 Carriage 21 Blade 22 Carriage moving device 23 Bearing 24 Grain sucker 25 Suction port 26 Drive pulley 27 Drive motor 28 V belt 29 Blower part 30 Air Separation chamber 31 Transfer roll 32 Exhaust port 33 Wire mesh 34 Backflow prevention valve 35 Rotating shaft 36 Flexible pipe 37 Suction and discharge device

[Procedure amendment]

[Submission date] June 15, 1995

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a front sectional view of a grain dry storage facility provided with a grain stirring device of the present invention.

FIG. 2 is a cross-sectional view of a main part of the side surface of FIG.

FIG. 3 is a partially omitted front view showing the stirring device of FIG.

FIG. 4 is a cross-sectional side view of essential parts showing a stirring rod and a grain suction device according to an embodiment of the present invention.

FIG. 5 is a front sectional view of another embodiment of the present invention.

[Explanation of symbols] 1 grain storage warehouse 2 partition wall 3 grain dry storage tank 4 floor plate 5 discharge port 6 discharge rotation conveyor 7 hopper 8 wind guide path 9 beam 10 monitoring passageway 11 stake conveyor 12 moving conveyor 13 spraying Device 14 Guide rail 15 Moving wheel 16 Moving base 17 Moving base moving device 18 Stirring bar 19 Stirring rod driving device 20 Carriage 21 Blades 22 Carriage moving device 23 Bearing 24 Grain sucker 25 Suction port 26 Drive pulley 27 Drive motor 28 V belt 29 Blower Part 30 Air Separation Chamber 31 Transfer Roll 32 Exhaust Port 33 Wire Mesh 34 Backwind Prevention Valve 35 Rotating Shaft 36 Flexible Pipe 37 Suction and Ejection Device

Claims (1)

[Claims] 1. A floor board of a grain dry storage tank having a structure with good air permeability, a dry air is supplied from below the floor board into the vessel, and a movable table is movable above the grain dry storage tank. An agitating rod with a lower end having a spiral blade on the outer periphery is suspended from the moving table inside the tank, and the agitating rod is reciprocated along the moving table and the moving table is moved to dry-store the grain. In a grain drying and storage facility that dries the grains in the tank while stirring, the center axis of rotation of the stirring rod is formed into a hollow cylinder, and the free end of the lower end is opened to form a suction port, and the upper end of the stirring rod is An agitation device for a grain dry storage facility, wherein the discharge port is connected to the suction side of the grain suction device, and the discharge port of the grain suction device opens into the grain dry storage tank.