JPH08114383A - Grain agitator for grain drying storage facility - Google Patents

Abstract

PURPOSE: To alleviate the bending stress applied to an agitating rod in the case of moving the rod or discharging grains and to prevent the damage of the rod by coupling the upper part of the rod to an agitating rod rotary shaft placed on a moving base via a universal joint. CONSTITUTION: The upper part of an agitating rod 18 is coupled to the agitating rod rotary shaft 27 of a moving base 16 for rotating the rod 18 via a universal joint 28. Thus, since the bending stress applied to the rod 18 is alleviated by the joint 28 between the shaft 27 and the rod 28, the rod 18 is not bent by the resistance of grains when moving in the full grains or excluding the grains. Accordingly, the bending or the breakage of the rod 18 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for stirring grains during storage in a large-scale grain drying and storing facility such as a rice center in order to prevent uneven drying of the grains.

[0002]

2. Description of the Related Art When storing grains harvested in a dry storage tank, they have a high water content of about 25% in the state of harvested raw rice, which deteriorates if they are accumulated for a long time.
It needs to be dried to about 18% at the storage stage. Therefore, conventionally, a large number of holes are provided in the floor plate of the dry storage tank to provide a structure with good air permeability, and the drying air is sent into the tank through the floor plate to dry the grain by ventilation. Also, in order to dry the whole tank as homogeneously as possible with the grain to be continuously put in,
It is performed that the dried grains at the bottom of the storage tank are carried to the upper layer, and instead the grains having a high water content are moved down to the bottom to stir and mix the grains in the dry storage tank.

Stirring of the grain is carried out by vertically suspending a stirring rod having a free end with a spiral blade provided on the outer periphery in the grain in the tank and rotating the stirring rod. Further, a stirring rod moving device is installed above the storage tank to move inside the tank while rotating the stirring rod to uniformly stir the grains. However, when the stirring rod is moved in the full grain, since the lower end of the stirring rod is a free end, a strong bending stress is applied due to the resistance of the grain and the stirring rod may bend. In order to avoid this, it is advisable to slow the moving speed of the stirring rod, but if it is slow, it takes time to move and it is difficult to evenly stir the inside of the tank. Also, when the grains are discharged from the tank, the pressure of the grains flowing toward the discharge port may cause the stirring rod to bend. In order to prevent such bending at the time of discharging, it is necessary to continue rotating the stirring rod even during discharging, but if the stirring rod is rotated during discharging, smooth discharging of the grain will be hindered, and the power for rotation will be excessive. There is a problem of consumption.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and reduces bending stress applied to the stirring rod when the stirring rod is moved or the grain is discharged. The purpose is to prevent damage to the stirring bar.

[0005]

In order to achieve the above object, the present invention is characterized in that the upper portion of the stirring rod is connected to a stirring rod rotating shaft of a moving table for rotating the stirring rod through a universal joint.

[0006]

In the present invention, since the bending joint applied to the stirring rod is reduced by the universal joint between the stirring rod rotating shaft and the stirring rod, it is possible to move through the full grain and also to discharge the grain. The stir bar will not bend due to grain resistance.

[0007]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front sectional view of a grain dry storage facility provided with the grain stirring device of the present invention, and FIG. 2 is a side sectional view of a main part thereof. 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 dry storage tank 3. The floor plate 4 of the 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 installed under the floor immediately below the discharge port 5,
A hopper 7a is provided at the end of the terminal, and dried grains are transferred from the hopper 7a to another processing work site. Floor board 4
An air guide passage 8 is formed below the air guide passage, and an air blower (not shown) is connected to the air guide passage 8 to supply dry air to the air guide passage 8 from the floor board 4 to the dry storage tank 3 Dry air is blown into the grain inside to dry the grain.

A beam 9 is passed over the 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. 11 is a stake-in conveyor,
The end thereof is connected to the moving conveyor 12 via the hopper 7b. 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, through the spraying devices 13 provided at the front and rear ends of the moving conveyor 12, it is dropped into the lower dry storage tank 3. 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 grain, and successively to all the dry storage tanks 3 Feed the grain to.

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 movable table 16 with a part thereof omitted, and FIG. 4 is a plan view with a part thereof omitted. A moving table moving device 17 is mounted on the moving table 16. Reference numeral 20a is a moving motor of the moving table moving device 17, and 21a is a rotation direction converter, which converts the rotation direction of the motor 20a by 90 degrees to transmit power to the rotary shaft 22 of the moving wheel 15a, and moves the moving table 16 to the guide rail 14a.
Move back and forth along.

Further, a pair of slide rails 23 having a mountain-shaped cross section are provided on the moving base 16 in the left-right direction, and the moving wheels 15b are placed on the slide rails 23 to support the carriage 24. A carriage moving device 25 is mounted on the carriage 24, and the rotation direction converter 21b converts the rotation direction of the moving motor 20b by 90 degrees to transmit power to the rotary shaft 22b of the moving wheel 15b. The two driving wheels 15b are rotated to move the carriage 24 in the left-right direction along the slide rail 23.

The carriage 24 is provided with a stirring rod drive device 19 for rotating the stirring rod 18 at left and right symmetrical positions respectively. The stirring rod drive device 19 is a drive motor 26 and a stirring rod rotating shaft 27 driven by the belt. Consisting of a stirring rod rotating shaft 27
Has a tip protruding below the carriage 24, and the stirring rod 18 is attached to the tip via a universal joint 28. The stirring rod 18 has a spiral blade formed on the outer circumference, and is rotated in a certain direction by the drive motor 26 of the stirring rod driving device 19 via the stirring rod rotating shaft 27 to remove the grains accumulated in the dry storage tank 3. After stirring, the lower-layer grains are lifted to settle the upper-layer grains, and the mixture is stirred and mixed to evenly dry the grains.
4 to the left and right and the moving table 16 to the front and back to move the stirring rod 18
Are evenly moved to the inside of the dry storage tank 3 to appropriately dry the grains in the dry storage tank 3.

5 and 6 show a stirring rod connecting portion of an embodiment of the present invention, FIG. 5 shows a state in which a universal joint 28 is fixed to the stirring rod rotating shaft 27 so as not to bend, and FIG. 6 shows a universal joint. Reference numeral 28 indicates a state in which the lens can be bent. A universal joint 28 is connected to a tip of a stirring rod rotating shaft 27 driven by a drive motor 26 (not shown) via a sleeve 29, and a slide shaft 31 is formed at an upper end of the universal joint 28.
A stirring rod 18 is connected to the lower end. The sleeve 29 has a stepped recess 30 having an inner diameter and a depth for accommodating the outer cylinder of the universal joint 28 at the lower end, and a slide hole 32 penetrating the slide shaft 31 of the universal joint 28 at the upper end. Stepped portion 3 with a thin outer diameter
3 is formed. Then, a pair of slits 34 extending in the axial direction are symmetrically formed in the thin outer diameter portion, and the slide shaft 31 and the universal joint 28 are inserted from the step recess side. Further, the coil spring 35 having an inner diameter suitable for the thin outer diameter portion is fitted into the thin outer diameter portion, and one end of the coil spring 35 is abutted against the stepped portion 33 to compress the coil spring 35 within a predetermined range. In this compressed state, a pin 36 penetrating the tip end of the slide shaft 31 through the slit 34 is erected, and the pin 36 causes the coil spring 35 to pass through.
Support the other end of the coil spring 35,
The slide shaft 31 and the universal joint 28 are urged to be housed in the sleeve 29.

When the dry storage tank 3 has a small amount of grains, the resistance of the grains applied to the stirring rod 18 is small, so that the slide shaft 3
1 and the universal joint 28 are coil springs 3
5, the universal joint 28 is pulled up into the sleeve 29, and the universal joint 28 is held in a non-flexible state. Even if the stirring rod 18 runs idle in this state, the lower end of the stirring rod 18 is not shaken by the universal joint 28, which prevents the dry storage tank 3 from being damaged and prevents the stirring rod 18 from being damaged. When the stirring rod 18 is rotated with the grains accumulated in the dry storage tank 3, a downward thrust is generated in the stirring rod 18. Therefore, the stirring rod 18 sinks against the coil spring 35, and the universal joint 28 is pulled down from the sleeve 29 to be in a bendable state. As a result, when the stirring rod 18 moves in the dry storage tank 3, the universal joint 28 bends to reduce the bending stress applied to the stirring rod 18.

[0016]

As described above, according to the present invention, by connecting the stirring rod rotating shaft of the stirring device and the stirring rod through the universal joint, the bending stress applied to the stirring rod when the stirring rod is moved or the grain is discharged. Can be reduced, and bending and breakage of the stirring rod can be prevented in advance.

[Brief description of drawings]

FIG. 1 is a front view of essential parts showing an embodiment of a grain storage warehouse provided with a stirring device of the present invention.

FIG. 2 is a side view of a main part of the grain storage warehouse of FIG.

FIG. 3 is a partially omitted front view showing an embodiment of the movable table of FIG.

4 is a partially omitted plan view showing an embodiment of the movable table of FIG. 1. FIG.

FIG. 5 is a side sectional view of a main part of a stirring rod connecting portion to which the universal joint of the embodiment of FIG. 1 is fixed.

FIG. 6 is a side sectional view of a main part of a stirring rod connecting portion in which the universal joint of the embodiment of FIG.

[Explanation of symbols]

 1 Grain Storage Warehouse 2 Partition Wall 3 Dry Storage Tank 4 Floor Board 5 Discharge Port 6 Discharge Rotation Conveyor 7 Hopper 8 Wind Guide 9 Beam 10 Monitoring Passage 11 Stretching Conveyor 13 Spreading Device 14 Guide Rail 15 Moving Wheel 16 Moving stand 17 Moving stand moving device 18 Stirring rod 19 Stirring rod driving device 20 Moving motor 21 Rotation direction converter 22 Rotating shaft 23 Slide rail 24 Truck 25 Truck moving device 26 Drive motor 27 Stirring rod rotating shaft 28 Universal joint 29 Sleeve 30 steps Recess 31 Slide shaft 32 Slide hole 33 Stepped portion 34 Slit 35 Coil spring 36 Pin

Claims (1)

[Claims] 1. A floorboard of a grain storage tank is structured to have good air permeability, dry air is supplied into the tank through an airflow passage below the floorboard through the floorboard, and the floorboard is moved above the grain storage tank. Grain dry storage facility that erected a platform and suspended a stirring rod with a free end with a spiral blade on the outer periphery so that it can be moved from the platform to the inside of the vessel, stirring and drying the grains stored in the vessel In the grain stirring apparatus in the grain dry storage facility, the upper portion of the stirring rod is connected to a stirring rod rotating shaft mounted on the moving table via a universal joint.