JPS61295485A - Cereal grain drying control system 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 drying control method for a grain dryer.

Conventional technology Conventionally, grains stored in a storage chamber are fed out from the storage chamber into a drying chamber and dried by being exposed to hot air generated by a burner. The grain drying process detects the moisture content of the grains, and when the moisture detection sensor detects the moisture value of one sample and the moisture value of the grains, the dryer is automatically stopped and the grain drying operation is stopped. It was a control method.

Problem to be Solved by the Invention The grains stored in the storage chamber are fed out from the storage chamber into the drying chamber at the bottom, and the hot air generated by the burner is sucked by the exhaust fan, thereby drying the grains from the hot air chamber. room,
The grains passing through the ventilation chamber and being suctioned and exhausted by the exhaust fan and flowing down in the drying chamber are exposed to this hot air and dried, while the moisture of the grains being dried is detected by a moisture detection sensor, When this moisture detection sensor detects the moisture value of the grains that is the same as the finishing target moisture value, the dryer automatically stops the drying operation. Depending on the condition and the temperature of the hot air generated by the burner, the drying rate of the grains may be high, low, or low. In addition, if the drying loss rate is low, the drying process of the grains may not be completed within a predetermined time.

This invention has four stages to solve the problem.The upper part is provided with a storage chamber (1) for storing grains, and the lower part is provided with a drying chamber (2) through which the grains flow down.
The hot air generated from the burner (3) is sucked and exhausted from the hot air chamber (4) through the drying chamber (2) and the exhaust chamber (5) by the exhaust fan (6), and the storage chamber (1) The section is equipped with a moisture detection sensor (7) that detects moisture in the grain during circulation drying to detect the drying rate, and the drying rate of the grain detected by this moisture detection sensor (7) is the set grain. "Drying rate wind" At this time, the temperature of the hot air generated from the burner (3) is controlled to be lowered by a predetermined temperature to a low temperature. Sometimes, the temperature of the hot air generated from the burner (3) is controlled to be higher by one predetermined temperature, and the predetermined temperature amount to be changed is more when changing to the lower temperature than when changing to the higher temperature. This is a grain drying control method for a grain dryer, which is characterized by being provided with a control device that controls to increase the temperature change h1 of the grain dryer.

Effect of the invention The grains flowing down from the storage chamber (1) into the drying chamber (2) are
Hot air generated from the burner (3) passes through the hot air chamber (4), the drying chamber (2), the exhaust chamber (5), and is sucked in by the exhaust fan (6).
The grains are exposed to this hot air and dried, and the moisture in the drying grains is detected by a moisture detection sensor (7).
), the drying rate of the grain is detected from this detected moisture value, and this detected grain drying rate and the set grain drying rate that is set and stored in the control device are used by this control device. When the detected grain drying rate is equal to or higher than the set grain drying rate, the controller controls the fuel pump so that the temperature of the hot air generated from the burner (3) is lowered. The amount of fuel supplied into the burner (3) is controlled to decrease, and the temperature of the hot air generated from the burner (3) is lowered to dry the grains.

Conversely, when the detected grain drying rate is below the set grain drying rate, the fuel pump is controlled by the control device so that the temperature of the hot air generated from the burner (3) is increased; The amount of fuel supplied to the burner (3) is increased and the temperature of the hot air generated from the burner (3) is increased to dry the grains. The amount of change in this hot air temperature is, for example, if the drying rate is different and the amount is the same, if the high temperature control is 3 degrees, the low temperature control is 5 degrees. Dry the grains by controlling the amount.

Effects of the Invention According to the present invention, the detected grain drying rate detected by the moisture detection sensor (7) and the set grain drying rate are compared, and the temperature of the hot air generated from the burner (3) is changed and controlled based on this comparison. , when the amount of W to be changed is controlled to be greater when controlling the hot air temperature to a lower temperature than when controlling the hot air temperature to a higher temperature, thereby reducing the drying rate of the grains. In this case, the drying rate of the grains decreases greatly and changes, and as a result, shell side occurs in the drying grains.

Moreover, no crushed particles are generated.

Embodiment In the illustrated example, the tank wall (9) of the dryer (8) has a rectangular shape in plan view that is long in the front and back direction, and is made up of seven front and rear shields and left and right wall plates. The operation piece fli (10) that controls the start, stop, etc. of (8) and the tank wall (
9) It has a structure in which a moisture detection sensor (7) for detecting the drying rate of grains flowing down inside is detachably attached.

Located at the center of the lower part of the tank wall (9) and extending in the front and rear directions, there is provided a grain collection gutter (eye) that is V-shaped in iE view and is equipped with a transfer helix. ) At the top, drying chambers (2), (2) are formed in the vertical direction 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 feeding help that lets the grains flow out. (12), (12) are rotatably supported.

It has a structure in which an inclined plate is provided on the two sides of each ventilation mesh plate and a partition plate is provided on the lower side, and a hot air chamber (four
), and the burner case (1
Ventilation chambers (5), (5) are connected between the outside ventilation net plate and the left and right wall plates, and communicate with the burner (3) built into the burner (3).
), which communicates with the exhaust fan (6) provided on the rear wall plate. A hot air temperature detection sensor (14) for detecting the hot air temperature in the hot air chamber (4) is provided on the inner wall of the rear wall plate in the hot air chamber (4), and a motor ( 15) is provided, and this motor (15) operates the grain collecting trough (
11), the delivery valve (12), (12)
), the exhaust fan (6), etc., are rotated.

A fuel tank (16) is installed at the front of the dryer a (8), and the burner (16) is installed at the outer side of the lower plate of the burner case (13).
3) Submerge the 4-fuel pump (17) that supplies fuel into the interior, and connect the fuel hose (18) from the 1-nuclear fuel tank (16),
Fuel is supplied into the burner (3) through the fuel pump (17) and fuel supply pipe (18), and combustion air is supplied by a blower (
20) is rotated by a blower motor (21) to send oxygen into the burner (3) through a blower duct l-(22).

A storage chamber (1) is formed above the drying chambers (2), (2), and ceiling plates (23), (23) are formed above the storage chamber (1).
), a transfer gutter (24) equipped with a transfer spiral is provided along these ceiling plates (23), (23), and this transfer gutter (
24) A supply port for supplying the transferred grains into the storage chamber (1) is opened in the center, and a diffusion plate (
25) is provided, and the grains are uniformly diffused and returned into the storage chamber (1) using this diffusion plate (25).

The grain raising machine (26) is removably attached to the front part of the front wall board,
Inside, a packet conveyor (27) belt is stretched between the upper and lower pulleys, a dispensing cylinder (28) is provided between the upper end and the starting end of the transfer gutter (24) for communication, and the lower end and the A supply gutter (29) is provided between the terminal end of the grain collection gutter (11) for communication, and a motor (3
0), and this motor (30) rotates the packet conveyor (27) belt and the transfer helix in the transfer gutter (24).

110 The moisture detection sensor (7) has a box shape, and the moisture detection part of the grain is configured to protrude from the inside of the box, and the protruding detection part is mounted in a state in which it protrudes into the front wall board. +iii Recording machine wall (a configuration in which a part of the grains flowing down inside the tank wall is compressed and crushed by this detection part, the moisture content of the crushed grains is detected, and the drying rate of the grains is detected from this detected value) and 1
The bale moisture detection sensor (7) is operated by the electric signal sent from the operating piece m (10), and the motor (31) inserted into the box rotates to detect the moisture detection sensor (7). This is a configuration in which the detection section operates.

The operation piece m (10) is box-shaped, and on the surface of the box are a start switch (32) and a stop F switch (33).
4L1 water mark sample fixed nail (34), hot air temperature setting hole (
35), a grain type setting knob (38), etc., and a control device (37), etc. inside, and this control device (37) has a control device (37), etc. An input circuit (38) in which the settings (34), (35), (3B), etc. are manually operated, a detection value detected by the moisture detection sensor (7) and the hot air temperature detection sensor (14). An A-D converter (39) that performs A-D conversion of the A-D converter (39), an input circuit (38) into which the converted value converted by this A-D converter (39) is input, these input circuits (38), (3
8) a CPU (40) that performs arithmetic and logical operations and comparison operations on various human power values input from the CPU (40);
The configuration includes an output circuit (41) that receives and outputs various commands issued by the input circuit (38).
, (3B), A-D converter (39), CPU
(40) and the output circuit (41) are connected, and this control device (37) controls the moisture detection sensor (7).
, the fuel pump (17) and various motors (15), (
21), (30), (31) Starting and stopping the shade) 6 The control device (37) is set by operating the ice moisture setting (34). Service-L r]
The moisture value of the grain with the same standard moisture value is detected by the moisture detection sensor (
7) is configured to automatically stop the dryer (8) when detected, and the drying rate of the grain is detected based on the detected grain moisture value detected by the moisture detection sensor (7),
Also, the detected grain drying rate and this control device (37)
When the detected grain drying rate is equal to or higher than the set grain drying rate,
The temperature of the hot air generated from the burner (3) is controlled to a low temperature by lowering the temperature setting set and stored in the control device (37) and lowering the temperature of the hot air generated from the burner (3). The grain moisture value detected by the moisture detection sensor (7) is displayed on a display window on the surface of the operating device (10).

Conversely, when the detected grain drying rate is less than the set grain drying rate, the set temperature amount set and stored in the control device (37) is increased to increase the temperature generated by the burner (3). The temperature of the hot air generated from the burner (3) is increased to 11.
This is a configuration in which F is controlled to a high temperature.

The set temperature, which is set and stored in the control device (37) for controlling the temperature of the hot air, is stored in the burner (37).
), the temperature is stored so that the temperature when controlling the hot air temperature to a lower temperature changes more sharply.
In addition, various temperatures are set and stored in the control line 2i (37) for different drying rates so that the amount of change in the hot air temperature to be controlled changes depending on the amount of difference in the drying rate.

The control device (37) is the hot air temperature control device (35).
Set the burner (3) so that the hot air temperature reaches the set temperature set in
), the temperature of the hot air generated from the burner (3) is detected by the hot air temperature detection sensor (14), and the detected hot air temperature and the This control line 2t (37
), and the fuel pump (17) is controlled to control the flow rate of fuel supplied into the burner (3) so that the detected hot air temperature becomes the same as the set hot air temperature.

Each setting knob (34), (35) of the operating device (10).

ζ3B) and the start switch (32), hot air is generated from the burner (3) provided on the front wall plate, and this hot air is sent to the exhaust air a(6) provided on the rear wall plate. The drying room (2) is moved from the hot air room (4) by being sucked and exhausted by the
The grains, which are ventilated and stored in the storage chamber (1) of the dryer (8), are exposed to this hot air and dried while flowing down from the storage chamber (1) into the drying chamber (2), Grain is collected at the bottom by the discharge valve (12), and transferred to the collecting trough (11) by the transfer spiral at the bottom.
The grain is transferred and discharged into the supply gutter (29,) through the grain raising machine (29).
6), it is transported to the second part, and is transferred and supplied onto the diffusion ffi (25) via the transfer gutter (24) by the transfer helix of the second part, and into the storage chamber (1) by this diffusion plate (25). It is evenly diffused and reduced, circulated and dried, and the [1
When the moisture detection sensor (7) detects a grain moisture value that is the same as the finished target moisture value set in the standard water setting attempt (34), the control device (37) of the operating device (10) automatically controls the grain moisture value. The dryer (8) automatically stops 1-.

During this drying work, the detected grain drying rate detected by the moisture detection sensor (7) is compared with the set grain drying rate set in the control device (37), and the detected grain drying rate is When is less than the set grain drying rate, the temperature of the hot air generated from the burner (3) is lowered to a low temperature to dry the grains. Conversely, when the detected grain drying rate is less than the set grain drying rate,
The temperature of the hot air generated from the burner (3) is raised to a high temperature to dry the grains.

In this temperature control, when controlling the temperature to a low temperature, the amount of temperature change is controlled more rapidly and the grains are dried.

The temperature of the hot air generated from the burner (3) is controlled by the drying rate detected by the moisture detection sensor (7), and this hot air temperature control lowers the temperature of the hot air to a lower temperature. Since the amount of change is closely controlled, the drying loss rate of the grain during drying does not become high, so the grain does not cause ff4;I;1 or breakage. Never.

[Brief explanation of drawings]

The figure shows one embodiment of this invention. The figure is a block diagram, and Figure 2 is a partially cutaway front view. FIG. 3 is a partially cutaway side view, and FIG. 4 is an enlarged front view of a portion of the dryer. In the figure, (1) is the storage chamber, (2) is the drying chamber, (3) is the burner, (4) is the hot air chamber, (5) is the exhaust chamber, (6) is the exhaust fan, and (7) is the A moisture detection sensor is shown.

Claims (1)

[Claims] A storage chamber (1) for storing grains is provided in the upper part, a drying chamber (2) is provided in the lower part for the grains to flow down, and a burner (3) is provided.
The hot air generated by the drying chamber (2) is transferred from the hot air chamber (4) to the drying chamber (2).
A ventilation chamber (5) is provided to suck and exhaust air with an exhaust fan (6), and a moisture storage chamber (1) is provided to detect the moisture content of the grains during circulation drying to determine the drying rate. Detection sensor (7)
is provided, and when the drying rate of grain detected by this moisture detection sensor (7) is higher than the set grain drying rate, the burner (3)
The temperature of the hot air generated from the burner (3) is controlled to be lowered by a predetermined temperature to a low temperature, and when the detected grain drying rate is below the set grain drying rate, the temperature of the hot air generated from the burner (3) is controlled to be lowered by a predetermined temperature. A control device is provided that controls the temperature to be raised by a predetermined value to make it a high temperature, and controls the predetermined amount of temperature to be changed so that the amount of temperature change when changing to the low temperature is larger than when changing to the high temperature. A grain drying control system for a grain dryer featuring: