JPH07113515B2 - Drying time setting device for grain dryer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drying time setting device for a grain dryer.

Conventional technology and problems to be solved by the invention In general, when finishing drying in a conventional grain dryer, it is common to finish drying automatically by knowing whether or not the moisture value has reached a preset finishing moisture value.

Further, a timer is simultaneously set in the control unit due to a failure of the water content detection device and the like, so as not to exceed the reference time set in advance to one drying time or a slightly longer time.

However, depending on the drying form, for example, it may be necessary to perform additional drying in a short time.

In recent years, a mode in which the timer setting is composed of a combination of an increase switch and a decrease switch has become widespread, and in order to set a short time of about 2 hours, based on the above reference time,
When it comes to resetting the time, it wastes time and is troublesome for the setting operation.

Means for Solving the Problem In a grain dryer that receives the operation input of the drying start switch 1 to start the operation of each part and finishes the drying depending on the set moisture or the set time, an increase switch 37 for setting the drying time or The start reference time related to the input of the decrease switch 38 differs depending on whether or not the time setting is performed before or after the input of the drying start switch 1, and after the input of the drying start switch 1, the operation time required for one drying or more Is set as the reference drying time, and the drying time setting device in the grain dryer is set to clear the time to "0" before the switch 1 is input.

Function and Effect of the Invention When the operator desires to change the setting of the drying time, the increase switch 37 is first pressed. Until then, the control unit that has stored the reference time is cleared to “0” time and the stored content is also changed according to the operation content of the increase switch 37. That is, Since the set value gradually changes from "0", the operation can be performed quickly and easily in a relatively short time setting.

When the drying start switch 1 is operated after the above settings, the operating parts are activated and the drying is performed.

Also, if you want to slightly change the above drying reference time,
By appropriately operating the increase / decrease switches 37 and 38 after the start of drying by the dry start switch 1, the dry reference time can be used as the start time to make a long and short correction, and in this case also, the setting can be changed quickly and easily. .

Embodiment In the illustrated example, the machine wall (4) of the dryer (3) has a rectangular shape in the front-rear direction and is composed of front and rear wall plates and left and right wall plates. The front wall plate is provided with the dryer (3). A burner case (7) having an operating device (5) for performing start and stop operations and a burner (6) is provided, and an exhaust fan (8) is provided on the rear wall plate.

A storage chamber (9) is formed in the upper part of the machine wall (4), and a drying chamber (11) pivotally supporting a delivery valve (10) is provided in the lower part of the storage chamber (9) in parallel. Each of these drying chambers (11)
A shell collecting gutter (12) having a transfer spiral supported on the lower side is provided for communication, and a hot air chamber (13) having a hot air temperature sensor is formed between the drying chambers (11) and (11). Is connected to the burner (6) and an air exhaust chamber (14) is formed outside each of the drying chambers (11) to communicate with the air exhauster (8). Is provided with a motor (15), and the motor (15) rotationally drives the transfer spiral, the feeding valves (10), (10), the exhaust fan (8), and the like.

A ceiling grate (16) and a transfer gutter (17) having a transfer spiral installed therein are provided on the upper side of the storage chamber (9), and transfer grains are transferred into the storage chamber (9) at a central portion of the transfer gutter (17). A supply port for supply is provided, and a diffusion board (18) is provided below the supply port.

A shell raising machine (19) is provided at the front part of the front wall plate, and a bucket conveyor (20) belt is stretched inside the upper and lower pulleys,
A throwing tube (21) is provided between the upper end and the starting end of the transfer gutter (17).
Is provided for communication, and a supply gutter (22) is provided between the lower end portion and the end portion of the grain collecting gutter (12) for communication, and the grain raising machine (1
9) A configuration in which a motor (23) is provided on the upper portion, and the motor (23) rotationally drives the bucket conveyor (20) belt, the transfer spiral in the transfer gutter (17), the diffusion plate (18), and the like. And, in the substantially central part in the vertical direction, the grain which falls while being conveyed to the upper part by the bucket conveyor (20) is received, and the grain is supplied to crush and crush it at the same time. A moisture sensor (24) for detecting the water content is provided, and a motor (25) is provided inside the moisture sensor (24). The motor (25) is an electrical measurement signal from the operating device (5). This motor (2
By the rotation of 5), each part of the moisture sensor (24) is rotationally driven to detect grain moisture.

A fuel pump (26) having a fuel valve is provided outside the lower side of the burner case (7), and the fuel in the fuel tank (27) is sucked by the fuel pump (26) to burner (6).
The blower (2
8) is rotated by a motor (29) and its blower (29)
With this, combustion air is supplied into the burner (6).

The operating device (5) is in the shape of a box, and the surface plate of the box body has a stake-in start switch (30) for starting the dryer (3) for each work, a drying start switch (1), and a discharge start switch. (31), Stop switch (32) to stop and operate this dryer (3), Grain type setting scoop (33), Moisture setting scoop (34), Overhang amount setting scoop (35), Drying time change A switch (2), a display window (36) for alternately displaying hot air temperature, grain water content, remaining time, etc. and a monitor display are provided, and the drying time change switch (2) includes an increase switch (37) and a decrease switch (37). 38) and is provided with a control device (39), a drying time setting device (40) and a timer (41) inside, and the grain type setting picker (33) and the moisture setting The picking tool (34) and the feeding amount setting picking tool (35) are rotary switches, Knob (33) and 該張 write amount setting knob (35) the burner by operating positions of the (6)
The hot air temperature generated from the
The target finish moisture is set by the operation position in 4).

The drying time setting device (40) includes the increasing switch (37) and the decreasing switch (3) of the drying time changing switch (2).
8), an input circuit (42) for inputting operations of the stake start switch (30), the drying start switch (1), the discharge start switch (31) and the stop switch (32), and this input circuit ( 42) with a CPU (43) that performs arithmetic and logical operations and comparison operations on various input values, and an output circuit (44) that receives and outputs various commands issued from this CPU (43) is there.

The control device (39) performs A-D conversion on the detection values detected by the hot air temperature sensor and the moisture sensor (24).
-D converter, an input circuit to which the converted value converted by this A-D converter is input, the grain type setting picker (33), the moisture setting picker (34) and the overhang amount setting picker An input circuit to which the operation of (35) is input, the CPU (43) that performs arithmetic logic operation and comparison operation on various input values input from these input circuits, and various commands issued from this CPU (43) This is a configuration in which an output circuit for receiving and outputting is received.

When the operation of the sticking start switch (30) is input to the drying time setting device (40) when the sticking work of the grain is performed, the setting and storage in the CPU (43), for example, ,
The timer (41) is set for 2 hours, and the dryer (3) is driven to rotate for 2 hours at a portion required for the staking operation and then automatically stopped.

When performing a grain drying operation, the operations of the grain type setting picker (33), the water content setting picker (34) and the swelling amount setting picker (35) are input to the control device (39). Then, when the operation of the drying start switch (1) is input to the drying time setting device (40), the reference drying time set in the CPU (43) and stored, for example, 30 hours is the timer. It is set to (41), the dryer (3) is driven to rotate for 30 hours at a location necessary for performing a drying operation, and then automatically stopped, but the moisture sensor (24) causes the moisture setting scoop (34) to operate. When the grain moisture which is the same as the finishing target moisture set by operation is detected, the control device (39) automatically controls and the dryer (3) is automatically stopped. The automatic stop is a configuration in which the detection result of the moisture sensor (24) is prioritized.

When it is desired to set a short drying time to the timer (41) for additional drying, etc., the increase switch (37) of the drying time changing switch (2) is operated, and the display window is displayed while this operation is continued. When the operation is stopped, the time is displayed on (36) sequentially, and when the operation is stopped, the time displayed when the operation is stopped is set to the timer (41), and the set time becomes the drying time. When the drying start switch (1) is operated after this time is set, the dryer (3) is rotationally driven for this drying time set at a position necessary for performing the drying work, and then automatically stopped. When it is desired to shorten the standard drying time of 30 hours during drying, the reduction switch (38) of the drying time changing switch (2) is operated, and while the operation is continued, the standard drying time of 30 hours is sequentially reduced. To the display window (36) When it is displayed and the operation is stopped, the time displayed at that time is set to the timer (41), and the set time is the drying time. This drying time is rotationally driven and then automatically stopped. It is a composition.

When discharging the dried grains, the discharge start switch (31) is operated by the drying time setting device (40).
Is input to the CPU (43) and stored, for example, 2 hours is set to the timer (41),
In the dryer (3), there are two places necessary for carrying out the stake-in work.
It is configured to rotate for a time and then automatically stop.

By operating the grain type setting scoop (33), the moisture setting scoop (34) and the swelling amount setting scoop (35) of the operation device (5) to the predetermined positions, and by operating the drying start switch (1). , The dryer (3), the moisture sensor (24) and the burner (6) are started, hot air is generated from this burner (6), and this hot air is passed from the hot air chamber (13) to the drying chamber (11), Ventilation chamber (14)
Grains stored in the storage chamber (9) after being sucked and exhausted by the exhaust fan (8) are dried by being exposed to the hot air while flowing through the storage chamber (9) in the drying chamber (11). It is then fed to the lower part by the feeding valve (10) and is flowed down to be fed into the grain collecting trough (12). From this grain collecting trough (12) through the supply trough (22) into the grain raising machine (19). It is transferred and fed by the lower transfer spiral, is transported to the upper part by the bucket conveyor (20), is supplied into the transfer gutter (17) through the ejection cylinder (21), and is transferred from the transfer gutter (17) to the diffusion plate (18). It is transferred and supplied by an upper transfer spiral, and is diffused and reduced uniformly in the storage chamber (9) by the diffusion plate (18),
When it is circulated and dried, and the moisture sensor (24) detects the moisture of the grain having the same finishing moisture value as set by operating the moisture setting knob (34), the controller (39) of the operating device (5). To automatically stop the dryer (3).

When setting the drying time to a short time and performing the drying work, increase switch (37) of the drying time change switch (2)
To set a predetermined drying time, and by operating the drying start switch (37) after setting the predetermined time,
The dryer (3), the moisture sensor (24) and the burner (6) are started to dry the grain, and the increase switch (3
When a predetermined drying time set by operating 7) has elapsed, the drying time setting device (40) is automatically controlled to automatically stop the dryer (3).

By operating the drying start switch (1), during grain drying,
When it is desired to shorten and change the reference drying time to perform drying, the reference drying time is shortened by operating the reduction switch (38) of the drying time changing switch (2), and when the shortened drying time elapses, The drying time setting device (40) is automatically controlled to automatically stop the dryer (3).

Since the drying time can be set by both the drying start switch (1) and the drying time change switch (2), the optimum drying time can be easily set depending on the moisture state of the grain.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a block diagram, FIG. 2 is a flow chart, FIG. 3 is a sectional view taken along line AA of FIG. 4, and FIG. An overall side view of the dryer, and FIG. 5 is an enlarged front view of a part of the dryer. In the figure, reference numeral (1) is a drying start switch, and (2) is a drying time change switch.

Claims (1)

[Claims] 1. In a grain dryer which receives an operation input from a drying start switch 1 to start the operation of each part and finishes drying when a set moisture content or a set time elapses, an increase switch 37 input or a decrease switch 38 input for setting a drying time is input. The start reference time according to 1. differs depending on whether or not the time setting is performed before or after the input of the drying start switch 1, and after the drying start switch 1 is input, an operating time required for one drying or a longer time than that is required. A drying time setting device in a grain dryer which sets a standard drying time and clears it to "0" time before inputting the switch 1.