JPH0528471Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a grain dryer that uses a thrower to discharge grain from the dryer body to a desired position. This relates to a grain discharge control device that stops.

2. Description of the Related Art Grain dryers, in which a thrower is connected to a grain discharge gutter of a dryer body to discharge grain to a desired position, have been widely known and used.

In the above-mentioned grain dryer, if the thrower is used as an option when necessary, a timer is installed to set the time required for grain discharge as a means to automatically stop the dryer body and the thrower when the grain discharge is completed. It has been known. In this method, the time required for grain discharge is set in a timer, the timer is started at the start of grain discharge, and the main body of the dryer and the thrower are automatically stopped when the set time has elapsed.

Problems that the invention aims to solve However, with this type of timer,
In order to reliably avoid grain remaining in the dryer body and thrower, there is a tendency to set the time required for grain discharge to be long, and the dryer body and thrower may be left idling even though the grain has already been discharged. In many cases, this not only wastes power, but also causes inconveniences such as damage to the rotating parts, especially since the thrower rotates at high speed in an unloaded state.

In view of these problems with the conventional method, the present invention detects when the load on the thrower motor of the thrower connected to the grain discharge gutter of the elevator attached to the dryer body changes from the grain discharge state to the idling state. As a result, when the thrower at the end of grain discharge becomes idling, the completion of grain discharge can be immediately and accurately detected, and the thrower, which rotates at high speed especially under no load, can be stopped without idling. It is an object of the present invention to provide a grain discharge control device for a grain dryer that can prevent damage to rotating parts.

Means for Solving the Problems The present invention has the following technical means for achieving its purpose.

That is, the grain discharge control device for a grain dryer according to the present invention is used in a grain dryer in which a thrower is connected to a grain discharge gutter of an elevator attached to the dryer body to discharge grain to a desired position, and the load on the thrower motor is reduced. A load detection device detects when the grain has changed from the grain discharge state to the idling state, and upon receiving a signal that the load detection device detects the idling state, it automatically stops both the grain discharge operation of the dryer itself and the thrower operation. It is characterized by being equipped with a grain discharge stop device.

Function When the grain is started to be discharged from the dryer main body, the grain is supplied from the dryer main body to the thrower, and is discharged to the required position by the thrower. As long as this state continues, the load on the thrower motor is large, and when no grain is supplied to the thrower, that is, when the thrower completes discharging grain, the load on the thrower motor becomes significantly lighter. Therefore, when the thrower has completed discharging the grain, the load detection device accurately detects the condition without delay, and the grain discharging stop device automatically stops both the grain discharging operation of the dryer main body and the operation of the thrower.

Example An embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a dryer main body, and an elevator 2 is attached to one side of the dryer for loading, circulating, and discharging grain. 3 is a grain discharge gutter, and this grain discharge gutter 3 is connected to the upper part of the elevator 2. Further, 4 is a thrower, and this thrower 4 is used as an option when necessary. 5 is a thrower body, 6 is a grain receiving box, 7 is a thrower motor, and 8 is a grain lifting cylinder.

Figure 2 shows the structure of the grain discharge control device, and
FIG. 3 shows the respective operations.

In FIG. 2, 9 is a load detection device,
This load detection device 9 is composed of a load sensor 10 for the thrower motor 7, a load setting circuit 11 for presetting a load value when the thrower motor 7 is idling, and a comparison circuit 12. 13 is a grain discharge stop device, and this grain discharge stop device 1
3 is a control circuit that stops the discharge operation of the dryer main body 1 and the thrower 4 when a signal is input from the load detection device 9.

In the structure configured as described above, when the dryer main body 1 starts discharging grain, the grain is supplied from the dryer main body 1 to the thrower 4, and the grain is discharged to a predetermined position by the thrower 4. . When the grain is completely discharged from the dryer main body 1 and the grain is completely discharged by the thrower 4, the thrower 4 enters an idling state and the load decreases significantly to the value set in the load setting circuit 11 of the thrower motor 7.
After a certain period of time, the load detection device 9 outputs the signal as a signal, and the signal is input to the grain discharge stop device 13. Therefore, the dryer main body 1 and the thrower 4 automatically stop. This grain discharge stop operation is performed almost at the same time as the supply of grain to the thrower 4 is interrupted, so the dryer body 1 and the thrower 4 do not continue to idle after grain discharge is completed, and power is not wasted. Damage to the machine body 1 and especially the thrower 4 due to high-speed rotation is prevented.

Effects of the invention According to the invention, it is detected that the load on the thrower motor of the thrower connected to the grain discharge gutter of the elevator attached to the dryer body changes from the grain discharge state to the idling state. It is possible to accurately detect the completion of grain ejection immediately when the thrower, which corresponds to the It can be prevented.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an overall front view of a grain dryer, FIG. 2 is a block diagram of a grain discharge control device, and FIG. 3 is a flowchart showing its operating mode. 1...Dryer body, 2...Elevator, 3...Grain discharge gutter, 4...Thrower, 5...Thrower body, 6...
... Grain receiving box, 7 ... Thrower motor, 8 ... Grain lifting cylinder, 9 ... Load detection device, 10 ... Load sensor,
11...Load setting circuit, 12...Comparison circuit, 13
...Grain discharge stop device.

Claims (1)

[Scope of utility model registration request] In a grain dryer where a thrower is connected to the grain discharge gutter of an elevator attached to the dryer body to discharge grain to a desired position, load detection detects when the load on the thrower motor changes from the grain discharge state to the idling state. A grain dryer characterized in that the grain dryer is provided with a grain discharge stop device that automatically stops both the grain discharge operation of the dryer main body and the operation of the thrower in response to a signal that the load detection device detects an idling state. Grain discharge control device.