JPS6210586A - Electrically-driven device for cereal grain drier - 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 applications The present invention relates to an electric device for a grain dryer.

Prior Art and Problems to be Solved by the Invention Using an AC circuit as a power source, an electromagnetic pump supplies fuel to the burner, a blower blows hot air heated by the burner to the drying chamber, and the grain flowing down from the drying chamber. In a grain dryer that uses electrically powered conveyors, such as a transfer spiral that receives grains and circulates them to a storage chamber at the top of the drying chamber, and a shell lifter, there is a discharge system that discharges the grains conveyed by these conveyors to the outside of the machine. If an AC motor that is powered by the power supply of this AC circuit is used as the switching control motor of the switching valve, a reduction gear and a forward/reverse rotation switching circuit will be required, making the configuration not only complicated but also large and expensive. becomes.

The electromagnetic valve for supplying fuel to the burner is powered by a DC power source converted from an AC circuit power source that powers the grain dryer's blower and the conveyor that circulates the grains. During grain drying, the solenoid valve is electrically operated to supply fuel to the burner for combustion, but the discharge valve that discharges the grains outside the machine is switched after grain drying is completed, so the solenoid valve is operated electrically. While the valve is powered,
The discharge valve is not switched; conversely, when the electromagnetic valve is stopped, the discharge valve is switched.

Therefore, the present invention aims to simplify the switching operation of the discharge valve and reduce the cost by providing a switching control motor to the DC circuit that electrically drives the electromagnetic valve for supplying fuel to the burner. It is something to do.

Means for Solving the Problems This invention provides an electromagnetic pump (
2), the hot air heated by this burner (1) is sent to the drying room (3).
), and a conveyor (6) (7) (8) that receives the grains flowing down from the drying chamber (3) and circulates them to the storage chamber (5) in the upper part of the drying chamber (3). ), etc., and a solenoid valve (11) for supplying fuel to the burner (1) by a DC circuit (10) converted from the AC circuit (9), which is used as a power source, and the conveyor (6). (
7) An electric device for a grain dryer is provided to electrically drive a switching control motor (13) for a discharge valve (12) that switches to discharge the transported grains to the outside of the machine according to (8).

Effect of the invention During drying work, the electromagnetic boss (2) is powered by the AC circuit (9), the electromagnetic valve (11) is powered by the DC circuit (10), and fuel is supplied to the burner (1). be burned. The hot air heated by this burner (1) is ventilated to the drying chamber (3) by a blower (4) powered by an AC circuit (9), and the grains in the drying chamber (3) are ) is flowed down by conveyors (6), (7), (8), etc. powered by
The grains are circulated and dried.

When drying is completed, the electric power of the electromagnetic valve (11) is stopped, and the switching control motor (13) is activated by the DC circuit (10) to switch the discharge valve (12).
7) The grains transported by (8) are discharged outside the machine.

Effects of the invention An electromagnetic pump (
2), the hot air heated by this burner (1) is sent to the drying room (3).
) to ventilate 4f! (4) and an AC circuit (
9) as the power source, convert the DC circuit (10
) is provided with a switching control motor (13) for an electromagnetic valve (11) for supplying fuel to the burner (1) and a discharge valve (12) for discharging the grains being conveyed to the outside of the machine. ,
During grain drying work, the electromagnetic valve (11) is powered to supply fuel to the burner (1), but the discharge valve (12) is inadvertently stopping the switching control motor (13) from being powered.
When discharging grains, a solenoid valve (stop the electric motor,
Since the switching control motor (13) is electrically operated only when the discharge valve (12) is opened and closed, the electromagnetic valve (11) and the switching control motor (13) are not electrically operated at the same time. ) can be matched to the switching control motor (13) side, which has a large load, and since a DC motor can be used for the switching control motor (13), it is compact and allows easy forward/reverse rotation mechanism. The cost is low.

Embodiment In the illustrated example, the grain dryer has a storage chamber (5) in the upper part of the drying chamber (3), and a grain collecting chamber (14) in the lower part in a three-dimensional manner. A conveyor (6) is installed upright on the side.

The conveyor (6) has a packet belt stretched over the vertical shaft, the lower end communicates with the grain collection chamber (14), and the upper end communicates with the transfer spiral (15) provided above the storage chamber (5). ) is communicated with the starting end of a conveyor (7) mounted on an internal shaft, and a part of the conveyor (7) is opened to communicate with the storage chamber (5).

A discharge port (16) is provided at the lower side of the starting end of the conveyor (7), a discharge funnel (17) is extended downward to this discharge port (16), and a discharge pipe (18) is connected to the discharge port (16). There is.

A discharge valve (12) for opening and closing the discharge port (16) is rotatably supported on the discharge port (16), and an output shaft of a switching control motor (13) is connected to this shaft. The discharge valve (12) is configured to open and close by forward and reverse rotation of the switching control motor (13), and a switch (19) contacts the discharge valve (12) in the open and closed positions of the discharge valve (12).
(20) are provided respectively.

In the grain collecting room (14), a conveyor (8) having a transfer spiral (37) installed therein is supported horizontally. Said conveyance 41 (6
) is provided with a motor (21), and this motor (2
1), the conveyor (6) is transmitted, and the conveyors (7) and (8) are also transmitted.

A burner case (22) containing a burner (1) is installed on the front side of the drying chamber (3), and a blower (4) is installed on the rear side to blow hot air heated by the burner (1). The drying chamber (3) is ventilated and the air is sucked by the blower (4).

This burner (1) is located at the bottom of the burner case (22).
An electromagnetic pump (2) supplies fuel to the fuel tank (23).
) is installed, and from this electromagnetic pump (2), the magnetic valve (
11), fuel is supplied to the burner (1) through the burner (1).

A control box (24) equipped with a control circuit, an AC circuit (9), an operation switch, etc. is mounted on the front wall of the storage chamber (5) above the burner case (22).

The AC circuit (9) is provided with the motor (21) that interlocks the electromagnetic pump (2), the sender (4), and the conveyor (6), (7), and (8).

The DC circuit (10) uses the AC circuit (9) as a power source and inputs it to the negative side of the transformer (25), drops the voltage, and provides a rectifier circuit (26) on the secondary side to form a DC circuit. (10). The DC circuit (10) includes:
The switching control motor (13) and the electromagnetic valve (11) are each provided, and the electromagnetic valve (11) is provided with a transistor (27) and a regulator (28), and the switching control motor (13) is provided with a transistor (27) and a regulator (28). A DC circuit (29) for the operating system is provided by converting the AC circuit (9). The DC circuit (29) of this operation system includes a switch (30) (31
), and these switches (30) and (31) have the following:
Relays (32) (33) and transistors (34)
) (34) and these relays (32) (
Switch the contact (35) (3B) of the control motor (
13) The four DC circuits (10) ζ are configured to convert the positive and negative polarities of the DC circuit (10) to the switching control motor (13) to switch the rotation direction between positive and reverse.

The control circuit is provided with a CPU, and when operation information of operation switches such as a start switch, a drying switch, and an open/close switch for the discharge valve (12) is inputted via the input circuit, the CPU outputs the output circuit. The configuration is such that output signals are output to the electromagnetic pump (2), the blower (4), the motor (21), the electromagnetic valve (11), the switching control motor (13), etc.

When the close switch of the exhaust 11j valve (12) is operated, the CPU
A close signal for the discharge valve (12) is outputted through the output circuit, and the relay (32) is energized by the switching action of the transistor (34), and the relay contact (35) is energized.
) (35) is closed, the switching control motor (13) rotates forward, the discharge valve (12) is rotated, and the discharge port (16) is closed. When the discharge valve (12) is closed, the switch (
30) is opened, the power to the relay (32) is cut off, the contacts (35) (35) of this relay (32) are opened, and the discharge valve (12) is in the position where the discharge port (18) is closed. will be maintained.

When the start switch is turned on and operated, a start signal is sent from the CPtJ to the motor (21) and blower (4) via the output circuit, and the motor (21) and blower (4) are powered by the AC circuit (9). be done. The motor (
The conveyors (6), (7), and (8) are driven by the rotation of the drying chamber (3), and the grains flowing down from the drying chamber (3) are circulated and conveyed to the storage chamber (5).

When the drying switch is turned on, a start signal is sent from the CPU to the electromagnetic pump (2), which is powered by the AC circuit (9), and a start signal is sent to the electromagnetic valve (11). By the switching action of the transistor (27), the electromagnetic valve (11) is powered by the DC circuit (10), and these electromagnetic pumps (
2) and the electromagnetic valve (11), the fuel tank (23
) is supplied to the burner (1) and burned. The hot air heated by the combustion of the burner (1) is passed through the drying chamber (3) and sucked and exhausted by the blower (4).
The grains being circulated are dried by this hot air while flowing down the drying chamber (3). When drying is completed, the electric power of the electromagnetic valve (11) is stopped.

When dry grains are to be discharged to the outside of the machine, when the open switch of the discharge valve (12) is turned on and operated, an open signal is issued from the CPU via the output circuit. This open signal is connected to the transistor (3
4), the relay (33) is energized, the relay contacts (3B) (H) are closed, and the input polarity of the switching control motor (13)-5 is switched between positive and negative. ) rotates in the opposite direction, the discharge valve is rotated downward and the discharge port (18) is opened, and when this discharge valve (12) comes into contact with the switch (31), this switch (31) is opened. The power to the relay (33) is cut off, and the contact (3B) of this relay (33) (3B)
is opened and the switching control motor (13) stops. The grains to be circulated are passed through the discharge pipe (1) from the discharge port (16).
8) and then ejected from the aircraft.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is an electric circuit diagram, FIG. 2 is a partially cutaway side view, and FIG. 5 is a partially cutaway overall side view. In the figure, (1) is a burner, (2) is an electromagnetic pump, and (3) is a burner.
) is the drying room, (5) is the storage room, (6), (7), (8) is the conveyor, (9) is the AC circuit, (10) is the DC circuit, (11) is the
) indicates a solenoid valve, (12) indicates a discharge valve, and (13) indicates a switching control motor.

Claims (1)

[Claims] An electromagnetic pump (2) for supplying fuel to the burner (1), a blower (4) for blowing hot air heated by the burner (1) to the drying chamber (3), and grains flowing down in the drying chamber (3). An alternating current circuit (9) that powers the conveyor (6), (7), (8), etc. that receives the water and circulates it to the storage chamber (5) in the upper part of the drying chamber (3).
) as a power source, a DC circuit converted from this (10)
an electromagnetic valve (11) for supplying fuel to the burner (1), and a discharge valve (12) for switching to discharge the grains conveyed by the conveyor (6), (7), and (8) out of the machine. An electric device for a grain dryer, which is provided to power a switching control motor (13).