JPH08130975A - Apparatus for automatically discharging grain in storing and drying tank for grain - Google Patents

Abstract

PURPOSE: To simplify operations to discharge grains of an apparatus for discharging the grains having a sweep auger arranged on the top surface side of a perforated plate and prevent maloperation in the apparatus for discharging the grains by respectively installing a main discharge port with an opening and closing valve at nearly the central site in the perforated floor plate in a storing and drying tank and further sub-discharge ports with opening and closing valves at sites on the outside from the main discharge port. CONSTITUTION: This apparatus for automatically discharging grains is obtained by installing a flow rate sensor 18 in a discharge conveyor 17 for the grains from a main discharge port 14 and sub-discharge ports 15 and 16 and providing a control circuit capable of initially opening an opening and closing valve of the main discharge valve, then opening and closing valves of the sub-discharge ports on a signal of a decrease in the flow rate or no flow rate with a flow rate sensor and operating a sweep auger on the signal of the decrease in the flow rate or no flow rate with the flow rate sensor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically discharging all dried grains from a storage / drying tank when the grains such as paddy are placed in the storage / drying tank and dried. .

[0002]

2. Description of the Related Art Generally, for drying grains such as paddy, the grains are put in a storage and drying tank equipped with a perforated floor plate at the bottom, and hot air is blown below the perforated floor plate with a blower fan in this state. It is carried out by exhausting air from the top of the storage and drying tank, and the dried grain is discharged to the outside from the bottom of the storage and drying tank.

When discharging grains from the storage / drying tank, conventionally, a main discharge port is provided at a substantially central portion of the perforated floor plate in the storage / drying tank, and the main discharge port is located radially outside the main discharge port. The first sub outlet
The second sub outlets are provided further outward in the radial direction from the first sub outlets, while the upper side of the perforated floor plate is laid on the upper surface of the perforated floor board while scraping the grains on the upper side to the main main outlet. A sweep auger that operates so as to rotate along is arranged, and first, the discharge of the grain from the main discharge port in the center is started, and when the discharge of the grain from this main discharge port is stopped, the The emission of grains from the sub-outlet of, and then when the emission of grains from the first sub-outlet ceases, the emission of grains from the second sub-outlet on the outside begins, and When the discharge of the grain from the second sub discharge port is stopped, the sweep auger is started to discharge the grain on the upper surface of the perforated floor plate to the outside of the storage and drying tank.

[0004]

However, in the conventional apparatus, the start of discharging the grain from each of the discharge ports and the start of the operation of the sweep auger are all manually performed. In addition to being extremely troublesome, there is a problem in that the operation sequence is likely to be wrong and the storage and drying tank may be damaged due to this operation sequence error.

That is, since the first discharge of the dried grain is performed from the main discharge port located in the center, the grain in the storage and drying tank is discharged while the upper surface of the grain is recessed in a conical shape. Although there is no uneven distribution of grain in the tank, first, the place where the discharge from the main discharge port should be started is mistakenly
When the discharge from the sub discharge port or the second sub discharge port is started, the grain in the storage and drying tank becomes biased, and the grain collapses from this biased state. It will damage the drying tank.

[0006] It is a technical object of the present invention to provide a device capable of automatically discharging grains in a storage and drying tank without causing the above problems.

[0007]

In order to achieve this technical object, the present invention provides: "A perforated floor plate provided at the bottom of a storage / drying tank is provided with a main discharge port with an opening / closing valve at a substantially central portion thereof. Sub-exhaust ports with open / close valves are provided at locations radially outside of the main exhaust port, while turning along the upper surface of the perforated floor plate while scraping the grains on the upper surface to the main exhaust port at the center. In a discharge device provided with a sweep auger that operates to
A discharge conveyor for grains from the main discharge port and the sub discharge port is arranged below the perforated floor plate, a grain flow rate sensor is provided on this discharge conveyor, and the main discharge port is preceded by a discharge signal. Open the on-off valve at, then open the on-off valve at the sub-exhaust with a signal of decrease or no flow by the flow sensor, and activate the sweep auger with a signal of decrease or no flow by the flow sensor. The control circuit thus configured is provided. "."

[0008]

[Operation] With this configuration, when the grains in the storage and drying tank are discharged, the main discharge port can be opened from the main discharge port by opening the on-off valve at the center first. When the discharge from the sub-discharge port is stopped or is about to stop, the discharge valve at the sub-discharge port automatically opens when the flow sensor decreases the flow rate or a signal indicating no flow is generated. Then, when the discharge from this sub discharge port is stopped or is in a state immediately before it is stopped, the sweep auger is activated by a signal indicating a decrease or no flow by the flow sensor.

That is, a series of operations are automatically performed in the order of first discharging from the main discharge port at the center, then discharging from the sub discharge port outside thereof, and then operating the sweep auger.

[0010]

Therefore, according to the present invention, the discharge of grains from the storage / drying tank can be performed by an extremely simple operation, and the order of the operations is not mistaken. There is an effect that it can be performed extremely safely without causing damage to the tank.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings of FIGS. In this figure, reference numeral 1 is the ground 2
2 shows a plurality of storage / drying tanks erected on the upper surface of each of the storage / drying tanks 1, the bottom of each of the storage / drying tanks 1 is provided with a porous floor plate 3 such as a wire net, and each of the storage / drying tanks 1 has: Grains put into the pit 4 in the ground 2 are put in via a vertical bucket conveyor 5 and a horizontal conveyor 6.

Further, air heated to an appropriate temperature by a heater (not shown) is blown into the bottom of each storage / drying tank 1 through the blower fan 7 and the blower duct 8 while the inside of each storage / drying tank 1 is blown. By exhausting air from the top through the exhaust duct 9 and the exhaust fan 10, the grain in each storage / drying tank 1 is dried. In addition, opening / closing valves 11a, 11b, 11c are provided at each of the connecting portions between the horizontal conveyor 6 and each storage / drying tank 1,
The storage / drying tank 1 is configured so that grains can be put into the storage / drying tank 1, and each of the connecting portions between the blower duct 8 and each storing / drying tank 1 and the connecting portion between the exhaust duct 9 and each storing / drying tank 1 are connected. Each of the on-off valves 12a, 12b, 1
2c, 13a, 13b, 13c are provided so that the above-mentioned drying can be performed independently for any storage and drying tank 1. Furthermore, the exhaust from the exhaust fan 10 is configured to be discharged into the exhaust through a dust remover (not shown), and the exhaust fan 10 is also provided.
The exhaust by means is also performed when the grain is put into each storage and drying tank 1.

The perforated floor plate 3 in each of the storage / drying tanks 1 has a main discharge port 1 at a substantially central portion thereof.
4, a first sub-exhaust port 15 at a portion radially outside the main exhaust port 14, and a first sub-exhaust port 1
The second sub-exhaust port 1 is provided at a position further outward in the radial direction from 5
Discharge conveyor 1 in which 6 are provided and the lower ends of these discharge ports 14, 15 and 16 are arranged below the perforated floor plate 3.
7 and a flow sensor 18 for detecting the flow rate of grain from the discharge conveyor 17 is attached to the outlet of the discharge conveyor 17.

The discharge conveyor 17 is a cylindrical body 17.
It is a screw conveyor type constituted by a and a screw 17b inserted therein, and the screw 17b is rotationally driven by a motor 19. An opening / closing valve 21 opened / closed by the opening / closing operation means 20 is provided at the main discharge port 14, and an opening / closing valve 23 similarly opened / closed by the opening / closing operation means 22 is provided at the first sub-discharge port 15. The second sub outlet 16 is provided with an opening / closing valve 25 that is also opened / closed by the opening / closing operation means 24.

On the other hand, a sweep auger 26 is arranged on the upper surface side of the porous floor plate 3 in each of the storage and drying tanks 1. The sweep auger 26 is composed of a screw 26a having a wheel 26b that rolls on the upper surface of the porous floor plate 3 at the tip, and a scraping plate 26c arranged in parallel with the screw 26a.
The inner end of a is interlocked with a vertical axis 28 via a gear mechanism 27 arranged in the main discharge port 14, and the vertical axis 28 is interlocked with a horizontal axis 30 via a gear mechanism 29. 30 is rotationally driven by a motor 31, and this rotation is transmitted to the screw 26a, whereby the sweep auger 26
While rotating the screw 26a, the wheel 26b, which is in contact with the upper surface of the porous floor plate 3, is rotated to rotate the porous floor plate 3
It is constructed so as to rotate along the upper surface of.

The screw 26a of the sweep auger 26 collects the grains on the upper surface of the perforated floor plate 3 toward the inside of the main discharge port 14 by the rotation of the screw 26a. A brush 26d that comes into contact with the upper surface of the perforated floor plate 3 is detachably attached to the lower edge of the plate 26c, so that grains remaining on the upper surface of the perforated floor plate 3 are reduced.

Further, reference numeral 32 is the discharge conveyor 17
On the basis of the detection signal of the flow rate sensor 18 in the above, the motor 19 for the discharge conveyor 17, the opening / closing valve 21 in the main discharge port 14, the both sub discharge ports 15, 1
6 is a control circuit for automatically controlling the on-off valves 23 and 25 in FIG. 6 and the motor 31 for the sweep auger 26 as shown in the flowchart of FIG.

The control circuit 32 starts with the start of discharging the grain, and first, the discharging conveyor 1 is started.
After operating 7, the on-off valve 2 at the main outlet 14
1 is opened and operated by the opening / closing operation means 20. As a result, the grains in the storage / drying tank 1 are sequentially discharged from the central main discharge port 14 to the outside via the discharge conveyor 17. This discharge progresses, and the discharge conveyor 17
When the discharge from the main discharge port is stopped or the discharge amount becomes small, this is detected by the flow rate sensor 31, and the opening / closing valve 21 at the main discharge port 14 is detected based on this detection signal.
On the other hand, the opening / closing valve 23 in the second sub outlet 15 is opened and operated by the opening / closing operation means 22.

As a result, the grains on the upper surface of the perforated floor plate 3 in the storage / drying tank 1 can be transferred to the second sub discharge port 15
Are sequentially discharged to the outside through the discharge conveyor 17. When this discharge progresses and the discharge from the discharge conveyor 17 stops or the discharge amount decreases, this is detected by the flow rate sensor 31, and based on this detection signal, the second sub discharge port 15 While closing the opening / closing valve 23, the opening / closing valve 25 in the third sub discharge port 16 is
The opening / closing operation means 24 opens and operates.

As a result, the grains on the upper surface of the perforated floor plate 3 in the storage / drying tank 1 will not be transferred to the second sub discharge port 16
Are sequentially discharged to the outside through the discharge conveyor 17. When the discharge progresses and the discharge from the discharge conveyor 17 stops or the discharge amount decreases, this is detected by the flow rate sensor 31, and based on this detection signal,
After the opening / closing valve 21 in the main discharge port 14 is opened, the sweep auger 26 starts to operate and swirls the grain on the upper surface of the perforated floor plate 3 toward the main discharge port 14 at the center, thereby turning the grain. Grains on the upper surface of the porous floor plate 3 are sequentially discharged to the outside from the main discharge port 14 via the discharge conveyor 17.

When this discharge progresses and the discharge from the discharge conveyor 17 stops, this is detected by the flow rate sensor 31, and the operation of the sweep auger 26 is stopped based on this detection signal, Main outlet 14
After closing the on-off valve 21 in, the discharge conveyor 1
By stopping 7, the series of discharging operations is completed.

That is, as a result of the above, the grains are discharged from the storage / drying tank 1 through the main discharge port 14 at the center first, then through the second sub discharge port 15 outside thereof, and then further. It is possible to automatically perform a series of operations in the order that the sweep auger 26 is operated after performing the operation from the second sub outlet 16 on the outer side.

[Brief description of drawings]

FIG. 1 is a diagram showing the whole.

FIG. 2 is a vertical sectional front view showing a main part of a storage / drying tank.

3 is a sectional view taken along the line III-III of FIG.

FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG.

FIG. 5 is a diagram showing a control flow.

[Explanation of symbols]

 1 Storage / drying tank 3 Perforated floor plate 14 Main discharge port 15,16 Sub discharge port 17 Discharge conveyor 18 Flow sensor 21 Main discharge opening / closing valve 23,25 Sub discharge opening / closing valve 26 Sweep auger 32 Control circuit

Claims (1)

[Claims] 1. A main discharge port with an on-off valve at a substantially central portion of a perforated floor plate provided at the bottom of a storage and drying tank, and a sub-exhaust valve with an on-off valve at a position radially outside the main outlet port. While each outlet is provided, on the upper surface side of the perforated floor plate, in a discharging device provided with a sweep auger that operates to swivel along the upper surface while scraping the grain on the upper surface to the main discharging port at the center, A discharge conveyor for grains from the main discharge port and the sub discharge port is arranged below the perforated floor plate, a grain flow rate sensor is provided on this discharge conveyor, and the main discharge port is preceded by a discharge signal. The open / close valve at the sub outlet is opened with a signal indicating a decrease or no flow by the flow sensor, and the flow by the flow sensor is opened. Reduction or automatic discharge device of cereals in grain for storage drying tank, wherein a flow rate without the signal providing the control circuit so as to actuate the sweep auger.