JPS61280383A - Control system of delivery of cereal grain of 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 a grain delivery control system for a grain dryer.

Conventional technology Conventionally, grains stored in a storage chamber are dried by rotating a delivery valve and causing the grains to flow down the drying chamber below the storage chamber. The control system was such that the grains were fed out of the drying chamber and flowed down at a constant rotation until the end of the drying process.

Problems to be Solved by the Invention The grains are fed out from the upper storage chamber into the drying chamber by a constant rotation of the valve, and are allowed to flow down, while the hot air generated by the burner is sucked by the exhaust fan, thereby drying the grains from the hot air chamber. In the grain feeding method of the dryer, in which the room is ventilated, the air is sucked and exhausted by the exhaust fan through the ventilation chamber, and the grains flowing down the drying chamber are exposed to this hot air and dried. When the grains to be stored and dried have a high moisture content, the temperature of the grains increases slowly at the beginning of drying.
For this reason, the drying loss rate of the grains in the initial stage of drying becomes particularly poor, and the overall drying efficiency until the end of drying also decreases, so that drying of the grains may not be completed within a predetermined time.

Means for Solving the Problems This invention provides a storage chamber (1) in the upper part for storing grains, and a drying chamber (2) in the lower part through which the grains flow down. 2) The drying chamber (2) is installed at the bottom by rotation.
A feeding valve (3) is provided to feed and flow down the grains in the drying chamber (2), and the hot air generated from the burner (4) is sent from the hot air chamber (5) through the drying chamber (2) and the exhaust chamber (6) to the exhaust fan ( 7) is provided to suck and exhaust air, and the grain flowing speed in the drying chamber (2) at a predetermined time at the start of grain drying is suitably slower than the same grain flowing speed after the elapse of this predetermined time. The structure of a grain feeding control device for a grain dryer is characterized by the following settings.

Effect of the Invention The grains stored in the storage chamber (1) are fed out from the storage chamber (1) into the drying chamber (2) by the rotation of the feed valve (3) and are generated by the burner (4). This drying room (
2) The grains flowing down inside are exposed to this hot air and dried, and when the moisture content of the grains reaches the specified moisture content, the control device automatically controls the dryer to automatically stop the dryer. The rotation of the feed valve (3) is controlled by the control device by a predetermined amount d, so that the flow rate of the grains flowing down in the drying chamber (2) is slowed down, and the flow rate of the grains flowing down in the drying chamber (2) is reduced. The grains flowing down the drying chamber (2) are exposed to the hot air for a long time and are dried. After the predetermined period of time has elapsed, the control device controls the rotation of the delivery valve (3) to be faster by a predetermined amount, so that the flow rate of the grains flowing down in the drying chamber (2) increases, and the speed of the grains flowing down the drying chamber (2) increases. ) The grains flowing down the drying chamber (2) are exposed to the hot air generated by the drying chamber (2) for a relatively short period of time, thereby drying the grains.

Effects of the Invention According to the present invention, the grains flowing down from the storage chamber (1) into the drying chamber (2) are controlled so that the rotation of the delivery valve (3) is delayed by a predetermined amount for a predetermined period of time from the start of the drying operation, and the grains flow down from the storage chamber (1) into the drying chamber (2). The rest is controlled by the control device so that the drying speed is a predetermined amount faster, so the time of exposure to the hot air generated by the burner (4) differs, so even when drying grains with high moisture content, the initial drying speed is These high-moisture grains are exposed to the hot air generated by the burner for a long time while flowing down the drying chamber (2), and the temperature of the grains increases, resulting in high grain temperature and drying. The drying rate of the grains is improved at the initial stage, and the overall drying efficiency until the end of drying is improved, so that the drying of the grains is completed within a predetermined time, and the temperature of the hot air generated from the burner (4) is increased. Since this method does not improve drying efficiency by drying, grains may be placed on the body side,
It also does not become crushed.

Example In the illustrated example, the model (9) of the dryer IN (8) has a rectangular shape in plan view that is long in the front and back direction, and is composed of front and rear wall plates and left and right wall plates. 8) There is a structure in which an operating device (lO) for controlling starting, stopping, etc. is removably attached.

A grain collection gutter (12) which is V-shaped in front view and has a transfer helix (11) inside is provided between the machine (9) located in the center of the lower part and extending in the front and back direction. A two-stage pulley (13) is fixed to the rear shaft end, and this grain collection gutter (12
) On the top, drying chambers (2), (2) are formed vertically between the left and right ventilation mesh plates and communicated with each other, and at the bottom of these drying chambers (2), (2), there is a rotatable delivery valve. (3), (3) is pivoted,
Sprockets (15), (15) are fixed to the rear shaft ends of the delivery valves (3), (3).

An inclined plate is provided at the L portion of each of the ventilation mesh plates, a partition plate is provided at the lower part, a hot air chamber (5) is formed between the inner ventilation mesh plates, and a burner provided on the front wall plate is provided. It is configured to communicate with a burner (4) built into the case (1B), and there are ventilation chambers (6), (6) between the outside ventilation net plate and the left and right wall plates.
), which communicates with the exhaust fan (7) provided on the rear wall plate. A hot air temperature detection sensor (17) for detecting the hot air temperature in the hot air chamber (5) is provided on the inner wall of the rear wall plate in the hot air chamber (5), and the exhaust fan (7) A pulley (18) is fixed to the shaft end of the shaft.

A fuel tank (18) is installed in the front part of the dryer (8), and the burner (4) is installed outside the lower wall plate of the burner case (18).
) A fuel pump (14) is provided to supply fuel into the fuel tank (18), and a fuel hose and a fuel pump (14) are provided from the fuel tank (18) to the fuel pump (14).
) and a fuel supply pipe into the burner (4), and the combustion air is generated by rotating a blower installed on the outside of the upper wall plate of the burner case (16) with a blower motor (20). The structure is such that air is blown into the burner (4) through an air duct.

A motor (21) is provided on the right side of the lower part of the rear wall plate, and a two-stage pulley (22) is fixed to the shaft end of the motor (21),
A transmission is installed on the left side, and this transmission is connected to a transmission pulley (
23), and a sprocket (20), which connects the two-stage pulley (22) of the motor (21) and the exhaust fan (7).
) is configured such that a bell) (25) is passed between the two-stage pulley (22) and the two-stage pulley (13) of the transfer helix (11). (2
B) is a configuration in which the hook is passed, and this two-stage pulley (13)
and the speed change pulley (23) are provided with a bell) (27), and the sprocket) (24) and the delivery valve (3), the sprocket of (3)) (15)
, (15) are connected with a chain (28), and a rotatable tension device (2B) is provided in the middle of the belt (27), and this tension device (28) is actuated. A solenoid (30) is provided and connected, and the operation of the solenoid (30) causes the delivery valve (3),
(3) The rotation speed is changed, and this solenoid (30) is operated by the operating device (lO).

A storage chamber (1) is formed above the drying chambers (2), (2), and ceiling plates (31), (31) above the storage chamber (1)
A transfer gutter (32) equipped with a transfer helix is installed along the
The central part of this transfer gutter (32) stores the transferred grains in this storage chamber (
1) Open a supply port for feeding into the storage chamber (1), provide a diffusion plate (33) below the supply port, and use this diffusion plate (33) to uniformly diffuse and return grains into the storage chamber (1). It is the composition.

The shell elevator (34) is removably attached to the front part of the front wall plate,
Inside, a packet conveyor (35) belt is stretched between the upper and lower pulleys, and a dispensing tube (3B) is provided between the upper end and the starting end of the transfer gutter (32) for communication, and the lower end and the collection gutter (32) are connected to each other. A supply gutter (37) is provided between the terminal end of the grain gutter (12) and communicated with the grain hoist (34).

A motor (38) is provided on the part side, and this motor (38)
This configuration rotates the packet conveyor (35)' belt and the transfer helix in the transfer gutter (32).

The operating device (10) is box-shaped and has a start switch (39), a stop switch (40), a hot air temperature setting device (41), a grain type setting hole (42), etc. on the surface thereof,
The structure includes a control device (43) inside, and this control device (43) is connected to each of the switches (39) and (40).
and an input circuit (40) into which operations such as each setting (4, (42), etc.) are input, and an A-D converter (40) that converts the detected value detected by the hot air temperature detection sensor (17) from A to D. 45)
, an input circuit (44) into which the converted value converted by this A-D converter (45) is input, and these input circuits (40, (
A CPU (4B) that performs arithmetic and logical operations and comparison operations on each insertion force value input in 44); and this CPU (4B)
Output circuit (4) that outputs in response to various commands issued by
7), and this control device (43) controls starting, stopping, etc. of the fuel pump (10), the solenoid (30), and each of the motors (20), (21), (38), etc. This is the configuration that is performed.

The CPU (41() operates the solenoid (30) by operating the start switch (39), controls the operating amount of the solenoid (30) to be small, and uses the solenoid (30) to operate the tension device ( 28), and the rotation of the delivery valves (3), (3) is controlled to reduce the speed of the grains flowing down in the drying chambers (2), (2).

After the predetermined time stored in this CPU (4B) has passed,
The CPU (46) operates the solenoid (30), controls the amount of operation of the solenoid (30) to a large extent,
This solenoid (30) causes the tension device (28
) by increasing the amount of rotation of the feed valves (3), (3) to increase the speed of the grains flowing down in the drying chambers (2), (2). The structure is such that the rotation of the delivery valves (3), (3) is controlled in this early state until the drying of the grains is completed.

The CPU (4B) adjusts the burner (4) so that the hot air temperature reaches the set hot air temperature set in the hot air temperature setting withdrawal (41).
It is configured to control the fuel pump (10) that supplies fuel to the inside, and the temperature of hot air generated from the burner (4) is detected by the hot air temperature detection sensor (17), and the detected hot air temperature and the set hot air are This CPU (4
B) controls the fuel pump (14) to control the burner (4).
This configuration controls the flow rate of fuel supplied into the fuel tank.

In addition, a moisture detection sensor is provided on the front wall plate portion to detect the moisture content of the grains during circulation drying to detect the drying loss rate, and the control device (43) of the operating device (10) The drying rate is set and stored, and the grain drying rate detected by the moisture detection sensor is compared with the set grain drying rate. When ,
The operation of the dryer (8) is temporarily stopped, and when the dryer (8) is restarted after the temporary stop to dry the grains again, the rotation of the delivery valve (3) is slowed down by a predetermined time. Alternatively, the plate wall (9) may be provided with an outside temperature detection sensor for detecting the outside air temperature, and the dryer (8) may contain and dry grains with the same amount of grains. Even when the grain size is low, when the outside temperature detected by the outside temperature sensor [1 sensor] is low, the delivery valve (3) may be controlled to slow down its rotation.

By operating the setting knobs (41) and (42) of the operating device (10) and operating the start switch (38), hot air is generated from the burner (4) provided on the front wall plate. The hot air is sucked and exhausted by the exhaust fan (7) installed on the rear wall plate, and is then passed from the hot air chamber (5) to the drying chamber (2) and into the plate wall (9) of the dryer (8). The stored grain is stored in the storage chamber (
The grains are exposed to the hot air and dried while flowing down the drying chamber (2) from 1), are delivered to the lower part by the delivery valve (3), and are supplied via the grain collection gutter (12) by the transfer helix (11). Gutter (37
)t and is transported to the upper part by the grain hoist (34),
The upper transfer helix passes through the transfer gutter (32) to the diffusion plate (33).
) is transferred and supplied to the storage chamber (1) by this diffusion plate (33).
), and when the grains are circulated and dried to reach a specified moisture content, the control device (43) of the operating device f (10)
The dryer (8) is automatically stopped by automatic control, but for a predetermined time from the start of this drying work, the control device (43) is automatically stopped.
) to operate the solenoid (30) to open the delivery valve (
The rotation of the solenoid (3) is controlled to be slow, so that the speed of the grains flowing down in the drying chamber (2) is slowed down, and the grains are dried.After a predetermined period of time, the control device (43) 30)
is operated to quickly control the rotation of the delivery valve (3), thereby increasing the flow rate of the grains flowing down in the drying chamber (2) and drying the grains.

The grains housed and dried in the plate wall (9) flow slowly down the drying chamber (2) for a predetermined period of time from the start of drying, and quickly flow down the drying chamber (2) after the predetermined period of time has elapsed. By this,
Even when drying grains with high moisture content, the time of exposure to the hot air generated from the burner (4) increases in the early stage of drying, and the temperature of the grains to be dried rises, causing the grains to become hot. As a result, the drying rate of grains decreases even in the early stages of drying.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a block diagram, Fig. 2 is a partially cutaway front view, Fig. 3 is a rear view, and Fig. 4 is a partially cutaway side view. FIG. 5 is an enlarged front view of a portion of the dryer. In the figure, (1) is a storage chamber, (2) is a drying chamber, (3) is a delivery valve, (4) is a burner, (5) is a hot air chamber, (6) is an exhaust chamber, and (7) is an exhaust chamber. Showing a wind machine.

Claims (1)

[Claims] A storage chamber (1) for storing grains is provided in the upper part, and a drying chamber (2) in which the grains flow down is provided in the lower part. ) is provided with a delivery valve (3) that allows the grains in the drying room (
2), the air is sucked and discharged by an exhaust fan (7) through an exhaust chamber (6), and the drying chamber (
2) A grain delivery control device for a grain dryer, characterized in that the grain flow rate in step 2) is set to be appropriately slower than the grain flow rate after the predetermined time has elapsed.