JPS6269085A - Cereal drying controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a grain drying control device, and can be implemented in a circulation type grain dryer.

[Prior Art and Problems to be Solved by the Invention] Various types of circulating grain dryers with automated drying control have been developed, which are composed of a storage tank, a drying room, and a grain collection room. When drying begins, the operator must operate the grain knob on the control box and input into the control device whether the grain to be dried is paddy or wheat.

Therefore, the present invention uses a grain type sensor to detect the impact force of the grain during loading or circulation in the grain dryer, and automatically determines whether the grain to be dried is wheat or paddy. This is intended to simplify the drying operation.

[Means for solving the problem] The technical means for solving the technical problem of the present invention is a storage tank 2. Drying room 3. It consists of a grain collection room 4, and the grains in the grain collection room 4 are transferred to a storage tank 2 by an elevator 13.
In a circulation-type grain dryer for drying grain, a grain type sensor 17 is provided that can determine the type of grain by collision of grains to be dried in a circulation path, and a hot air temperature is set based on the detection result of this grain type sensor 17. Control unit 2 that can
3, the grain drying control device is configured to include the following.

[Operations and Effects of the Invention] Grain type sensor 1 detects the collision force of grain during circulation in a grain dryer.
7, and the hot air temperature can be automatically set by the control unit 23 based on this detection result, so when drying starts, the operator can input grain information each time whether it is wheat drying or paddy drying. This simplifies the operation of the grain dryer.

[Example code] An embodiment of the invention shown in one drawing will be described below.

First, the configuration of the embodiment will be explained. 1 is a grain dryer, and this grain dryer 1 has a storage tank 2, a drying room 3, and a grain collection room 4 arranged sequentially from above to below. The drying path 3a of the lower drying chamber 3 flows down on the top plates 5, 5 and the center plate 6
, 3a, the drying path 3
There is a hot air path 3b near the center of a and 3a, and a drying path 3
Exhaust passages 3c, 3c are provided on the left and right sides of a, 3a, and an exhaust fan 7 is provided at the end of the exhaust passages 3c, 3c.
The air heated by the burner 8 is transferred from the hot air path 3b to the drying paths 3a, 3 by the action of the exhaust fan 7.
The exhaust passage 3c passes through a.

While flowing to the drying path 3c, the grains in the drying paths 3a are subjected to a drying effect, and the hot air after the drying effect is passed to the exhaust path 3c.

3c to the outside of the machine.

Below the drying paths 3B and 3a in the grain collection room 4, there are drying paths 3a,
Rotary valves 9, 9 that edge the grains in 3a downward
The grains fed out by the rotary valve 9.9 flow on the flow plate 10.10 and are collected in the lower helical gutter 11 of the grain collection chamber 4. The grains are transported to the elevator 13 installed on the side of the grain dryer 1, and then transported from the top of the elevator 13 to the upper helix 14.
15. Upper helical gutter with internal shaft support. Storage tank 2
It is configured such that it passes through a rotating diffusion device 16 located at the upper center of the storage tank 2, and is diffused into the storage tank 2 in approximately equal amounts.

Reference numeral 17 denotes a grain type sensor capable of determining the grain type by the collision of the dried grains during circulation. When the grains falling from the device 16 collide, or when the grains flowing down from the measurement hopper 38 disposed in the storage tank 2 collide as shown in FIG. 4, strain occurs and the resistance value decreases. At the beginning of drying, the moisture content of wheat is higher than that of paddy, and the weight ratio is 1.4 times that of paddy. By extracting the difference in resistance value, it is possible to distinguish the type of grain between paddy and wheat.

Next, a control device for a grain dryer will be explained based on the block circuit diagram shown in FIG. 18 is a drying condition setting dial configured in a control box (not shown), and a stop moisture knob 19 for setting finishing moisture. Drying speed setting knob 20 to set the drying speed. The drying conditions can be set by a timer knob 21 that sets the driving time of the grain dryer 1, and this setting dial 18
Setting information is input via an input interface 22 to a control section 23 incorporating a microcomputer.

Grain type sensor 17. Outside air temperature sensor 24 that detects outside air temperature. Each piece of information from the hot air temperature sensor 25 that can detect the hot air temperature in the hot air path 3b of the drying room 3 is sent to the A/D.
Converter 26. This is input to the control unit 22 via the input interface 22. Additionally, a wind pressure sensor 27 detects whether or not the exhaust fan 7 is rotating. Hull flow sensor 28 that detects whether or not the grains to be dried are circulating.
and other sensors 29 such as a moisture detection sensor are connected to the control section 23 via the human power interface 22. The control unit 23 performs arithmetic and logical operations on various input information, performs a comparison operation with data stored in the ROM 30, and outputs the output interface 31. A motor 32 for driving the grain dryer 1 is connected via various drive circuits (not shown). Valve 33 for fuel supply to burner 8. Heater 34 for igniting burner 8. Buzzer for abnormality alarm 35. Display indicating whether the wheat is dry or the paddy is dry L E
A drive command id, a stop command signal, an adjustment finger tone signal, or a display synchronization signal is sent to the D 36.

Next, the operation of the embodiment will be explained. When drying grain, the grain is fed into the hopper 37, and the elevator 13 grinds the grain 4:).
Upper spiral gutter 15. It is poured into the storage tank 2 via the diffusion device 16. During this stakeout work, the diffusion device 16
When the grains falling from the grain type sensor 26 collide with the grain type sensor 7, the difference in collision force between the grain types is detected as a difference in air resistance value, and this detection result is sent to the A/D converter 26 and the input interface 22. is input as grain information to the control unit 23 via
6 shows wheat or paddy.

Next, the grain dryer 1 is started by operating the stop moisture knob 19°, the drying speed knob 2o, and the timer knob 21 of the setting dial 18, and operating the start switch (not shown). At this time, in the case of rice grains, a control signal is sent from the control unit 23 to the fuel supply valve 33 of the burner 8 via the output interface 31° drive circuit (not shown), and the hot air temperature is adjusted to match the rice grains. If the control unit 23 outputs a signal from the control unit 23 to the output interface 31. A control signal is sent to the fuel supply valve 33 of the burner 8 via a drive circuit (not shown), and the temperature of the hot air is controlled to be high in accordance with the wheat grain.

When the grains packed in the storage tank 2 flow downward and pass through the drying passages 3a, 3a of the drying chamber 3, they pass through the hot air passage 3.
The hot air flowing from b through the drying passages 3a, 3a to the exhaust passages 3e, 3e receives a drying effect, and the hot air after the drying effect is discharged outside the machine from the exhaust passages 3c, 3c.

The dried grains are fed into the lower grain collection chamber 4 by the rotary valves 9, 9, conveyed to the lower part of the elevator 13 by the lower helical 12, and then transported to the lower part of the elevator 13 through the elevator 13° and the upper helical gutter 15. The drying process is completed by repeating this circulation process several times.

In such a drying process, moisture information from a moisture sensor (not shown) is sent to the control unit 23 at predetermined intervals, and the R
It is compared with the moisture curve stored in the OM 30 and processed, and the fuel supply valve 33 of the burner 8 is controlled to perform drying work while controlling the hot air temperature.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a cutaway front view, FIG. 2 is a side view, FIG. 3 is a block circuit diagram, and FIG. 4 is a cutaway side view. [Explanation of symbols 1 Grain dryer 2 Storage tank 3 Drying room
3a Drying path 3b Hot air path 3
c Exhaust duct 4 Grain collection room 5 Left/right side board 6 Center side board 7 Exhaust fan 8 Burner 9 Rotary valve 10 Grain flow board
11 Lower spiral gutter 12 Lower spiral gutter 13
Elevator 17 Grain type sensor 18 Setting dial 19 Stop moisture knob 20 Drying speed knob 2
1 Timer knob 22 Human interface 23 Control section 24 Outside air temperature sensor 25
Hot air temperature sensor 26 A/D converter 27 Wind pressure sensor 28 Paddy flow sensor 29 Other sensors
-30 ROM31 Output interface 32 Motor 33 Valve 34 Heater
35 Buzzer 36 Display LED
37 Staking hopper 38 Measurement hopper

Claims (1)

[Claims] [1] It is composed of a storage tank 2, a drying room 3, and a grain collecting room 4, and the grains in the grain collecting room 4 are transferred to the storage tank 2 by an elevator 13.
In a circulation-type grain dryer for drying grain, a grain type sensor 17 is provided that can determine the type of grain by collision of grains to be dried in a circulation path, and a hot air temperature is set based on the detection result of this grain type sensor 17. Control unit 2 that can
3. A grain drying control device comprising: