JPS61282782A - Control system of drying 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 application field.

The present invention relates to a grain drying control method for a grain dryer.

Conventional technology In the past, grains stored in a storage chamber were fed out from the storage chamber into a drying chamber and dried by being exposed to hot air generated by a burner. This grain drying control method automatically stops the dryer and stops the drying operation when this moisture detection sensor detects the moisture value of the grains that is the same as the finishing target moisture value that has been set.

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 wind chamber and being sucked and exhausted by the exhaust fan and flowing down in the drying chamber are exposed to this hot air and dried, while a moisture detection sensor detects the moisture content of the grains being dried, This dryer uses a drying control method that automatically stops the dryer when the moisture detection sensor detects the moisture value of the grains that is the same as the finishing target moisture value. The drying rate of the grains may be high or low. If the drying rate is high, the grains may have more shell side or broken grains, and if the drying rate is low, the grains may be damaged. 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, a drying chamber (2) in the lower part through which the grains flow down, and a burner (3). The hot air generated by the hot air 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). A moisture detection sensor (7) is provided to detect the moisture content of the grain inside and detect the drying rate.
) is different from the set grain drying rate based on the moisture detected by the burner (3). The hot air temperature is controlled an appropriate number of times for each temperature, and the hot air temperature is changed to a high temperature or a low temperature.The control device is used to change the number of times of control depending on the type of grain, the amount of grain to be dried, the outside air temperature, the set hot air temperature, etc. This is a grain drying control system for a grain dryer, which is characterized by providing and controlling the grain dryer.

Effects of the Invention The grains flowing down from the storage chamber (1) into the drying chamber (2) are transported by hot air generated from the burner (3) from the hot air chamber (4) to the drying chamber (2) and the exhaust chamber (5). ), the grains are exposed to this hot air and are sucked and exhausted by the exhaust fan (6), drying them, and the moisture in the drying grains is detected by the moisture detection sensor (7). The drying rate of the grain is detected based on the moisture value, and this detected grain drying rate is compared with a set grain drying rate that is set and stored in the control device, and the detected grain drying rate is determined. When the 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 set and stored in the control device, and the set temperature amount is controlled an appropriate number of times, and the temperature of the hot air generated from the burner (3) is controlled an appropriate number of times. The temperature of the heated air is low, but this appropriate frequency control is necessary, for example, when drying paddy grains and wheat grains, the number of times of control is increased when drying paddy grains, and the grains are dried. When the amount of grain is large and when it is small, when drying a small amount, the number of times of control is increased and the grain is dried, and when the outside air temperature during grain drying is high and low,
When the temperature is low, the number of times of control is increased to dry the grains, and when the set hot air temperature of the hot air generated from the burner (3) is high and low, the number of times of control is increased when the temperature is high. The grain is dried in a highly controlled manner.

Moreover, 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 set and stored in the control device, and the set temperature amount is controlled an appropriate number of times, and the hot air generated from the burner (3) becomes high in temperature.
For example, when drying paddy grains and wheat grains, the number of times of control is controlled as appropriate. When drying a large amount of grain, the number of times of control is increased and the grains are dried, and when the outside air temperature during grain drying is high and low, the number of times of control is increased when the temperature is high. The grains are dried under controlled conditions, and when the set hot air temperature of the hot air generated from the burner (3) is high and low, the number of times of control is increased when the temperature is low, and the grains are dried. dried.

Effects of the Invention According to this invention, the detected grain drying rate detected by the moisture detection sensor (9) and the set grain drying rate are compared, and the detected grain drying rate is the same as the set grain drying rate. When not in use, the temperature of the hot air generated from the burner (3) is controlled by the preset temperature several times to increase or decrease the temperature of the hot air, thereby increasing the temperature of the hot air generated from the burner (3). This process is controlled step by step depending on the type of grain, the amount of grain, the outside air temperature, the set hot air temperature, etc., and the grain is dried. Since the different grain drying rates can be easily and accurately made the same as the set grain drying rate, there will be no shell side or broken grains in the drying grains, and the grains will be Drying can always be completed within a predetermined time.

Embodiment In the illustrated example, the machine 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 front and rear wall plates and left and right wall plates. (8) and an operating device (10) that controls the start, stop, etc. of the aircraft wall (9).
) A moisture detection sensor (7) that detects the moisture of the grain flowing down and detects the drying rate of the grain from this detected grain moisture value.
It has a structure in which it is detachably attached.

Located in the center of the lower part of the machine wall (9) and extending in the front-rear direction, there is a grain collection gutter (11
), and above this grain collection gutter (11) there is a drying chamber (
2), (2) are formed between the left and right ventilation mesh plates to communicate with each other, and in the lower part of this drying chamber (2), (2), feeding valves (12), (12) that feed and flow the grains are rotated. It has a freely pivoted structure.

An inclined plate is provided at the upper part of each ventilation mesh plate, a partition plate is provided at the lower part, and a hot air chamber (4) is formed between the inner ventilation mesh plates,
It is configured to communicate with a burner (3) built into a burner case (13) provided in the front wall plate, and a ventilation chamber is provided between the outer ventilation net plate and the left and right wall plates. (5), (5
), 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 ( A two-stage pulley (16) is fixed to the shaft end of the motor (15), and the two-stage pulley (16) and the pulley (17) provided at the shaft end of the exhaust fan (6) are connected to each other. (1B) is a configuration in which the belt (1B) is passed, and this belt (
A tension device (18) is provided in the middle of the air blower (18), and this tension device (18) is configured to be rotated by a solenoid (20), and the operation of this solenoid (20) causes the rotation of the exhaust fan (6). It has a variable speed configuration. Further, the motor (15) is configured to rotationally drive the transfer helix in the grain collecting trough (11) and the delivery pulp (12), (12).

A fuel tank (21) is installed in the front part of the dryer (8), a fuel pump (22) is installed in the root side of the lower wall of the burner case (13), and a fuel hose, The fuel pump (22) is configured to supply fuel into the burner (3) through a fuel supply pipe, and the combustion air is supplied by a blower motor ( 23) to blow air into the burner (3) through the air duct.

A storage chamber (1) is formed above the drying chambers (2), (2), and ceiling plates (24), (24) above the storage chamber (1) are formed.
A transfer gutter (25) equipped with a transfer helix is installed along the
The central part of this transfer gutter (25) stores the transferred grains in this storage chamber (
1) Open a supply port for supplying the inside, and provide a diffusion plate (26) at the bottom of this supply port.1. This diffusion plate (26) is configured to uniformly diffuse and return grains into the storage chamber (1).

The grain raising machine (27) is removably attached to the front part of the front wall plate,
Inside, a bucket conveyor (28) belt is stretched between the upper and lower pulleys, and a dispensing tube (28) is provided between the upper end and the starting end of the transfer gutter (25) for communication, and the lower end and the collecting gutter (25) are connected to each other. A supply gutter (30) is provided between the terminal end of the grain gutter (11) and communicated with it, and a motor (31) is provided on the upper side of the grain hoist (27). The bucket conveyor (28) belt, the transfer helix in the transfer gutter (25), etc. are rotationally driven.

The moisture detection sensor (7) has a box shape, and a detection part for detecting moisture in grains is configured to protrude from inside the box. Attached to the front wall plate, grains flowing down inside the machine wall (9) are crushed under pressure by the detection part, and at the same time, the moisture content of the crushed grains is detected, and the dryness of the grains is determined based on the detected moisture value. The moisture detection sensor (7) is configured to detect the lapse rate, and the moisture detection sensor (7) is activated by transmitting an electrical measurement signal from the operating device (10).
The structure is such that the motor (32) inside the box is driven to rotate and the moisture detection sensor (7) is activated.

The operating device (10) is box-shaped, and on the surface there are a start switch (33), a stop switch (34), a target moisture setting amount (35), a hot air temperature setting amount (313), and a grain type setting amount. Checking (37), and checking the set amount of filling (38)
etc., an outside temperature detection sensor (38) for detecting outside air temperature is installed on the outside of the lower wall board, and a control device (4) is installed inside.
0), etc., and this control device (40) has the respective switches (33), (34) and the respective stage regulators (35).
), (3B), (37), (38), etc., the input circuit (41), the moisture detection sensor (7),
an A-D converter that converts the detected values of the hot air temperature detection sensor (I4) and the outside temperature detection sensor (39);
42), an input circuit (41) that inputs the converted value converted by this A-D converter (42), and these input circuits (4
1) and a CPU (43) that performs arithmetic and logical operations and comparison operations on various input values input from (41);
(43) Output circuit (
44), etc., and this control device (40) controls the moisture detection sensor (7) and the fuel pump (22).
, each of the motors (15), (23), (31), (32
), etc., are controlled to start and stop.

When the moisture detection sensor (7) detects a grain moisture value that is the same as the target moisture value set by operating the target moisture setting amount meter (35), the control device (40) controls the dryer. (8) is configured to automatically stop the moisture detection sensor (7) and the detected grain drying rate detected by the control device (40).
) and compare it with the set grain drying rate set and memorized.
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 set and stored in this control device (40), and this control The device (40) controls the temperature a predetermined number of times to lower the temperature.
), the grain loading amount set in (38), the hot air temperature set in hot air temperature setting (38), and the outside temperature detection sensor (38). The number of times set and stored in this control device (40) is controlled by the outside temperature etc. detected by the burner (39).
This is a configuration in which the temperature of the hot air generated is lower.

Further, when the detected grain drying rate detected by the moisture detection sensor (7) is below the set grain drying rate, the burner (3)
) is made to have a high temperature by the control device (40), and this control method is the same as that used for making the temperature low.

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).

The control device (40) controls the hot air temperature setting amount (3B).
Set the burner (3) so that the hot air temperature reaches the set temperature set in
), the hot air temperature detection sensor (14) detects the hot air generated from the burner (3), and the detected hot air temperature and the setting are controlled. The control device (40) controls the fuel pump (22) so that the detected hot air temperature is the same as the set hot air temperature by comparing the hot air temperature with the set hot air temperature. This configuration controls the flow rate of fuel to be supplied.

Note that when the detected grain drying rate detected by the moisture detection sensor (7) is different from the set grain drying rate set and stored in the control device (4o), the exhaust fan (6) The suction air volume to be sucked and discharged may be increased or decreased as appropriate for the set air volume, and the appropriate number of times may be changed and controlled depending on the type of grain to be dried, the amount of grain to be dried, the outside air temperature, the set hot air temperature, etc. In addition, when the detected grain drying rate is different from the set grain drying rate, both the suction air volume sucked and discharged by the exhaust fan (6) and the hot air temperature generated from the burner (3) are set by the set amount. It may be configured to increase or decrease the number of times as appropriate.

Each setting amount of the operating device (lO) (35), (36), (
37) and (38) and the start switch (33), hot air is generated from the burner (3) installed on the front wall plate, and this hot air is sent to the exhaust fan installed on the rear wall plate. (6
), the drying chamber (2) is ventilated from the hot air chamber (4), and the grains stored in the wall (9) of the dryer (8) are removed from the storage chamber (1). The grain is exposed to this hot air and dried while flowing down inside the drying chamber (2), and is delivered to the lower part by the delivery valve (12), and then sent to the collecting trough (11) by the lower transfer helix.
The grain is transferred to the supply gutter (30) and discharged through the grain raising machine (27).
) to the upper part, and the upper transfer helix transfers it to the transfer gutter (25
) and then spread! (2B), is evenly diffused and returned into the storage chamber (1) by this diffusion plate (26), is circulated and dried, and is dried by the target moisture setting hole (3) of the operating device (10).
When the moisture detection sensor (7) detects the same grain moisture value as the finishing target moisture value set in step 5), the operating device (10
) is automatically controlled by the control device (40) of the dryer (10).
to stop automatically.

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 (40), and the detected grain drying rate is is less than or equal to the set grain drying rate, the temperature of the hot air generated from the burner (3), the set temperature set in the control device (40), the type of grain being dried, The fuel pump (22) is controlled by the control device (40) the number of times stored in the control device (40) according to the charging amount, outside air temperature, set hot air temperature, etc. The fuel supplied into the burner (3) is controlled to decrease, the temperature of the hot air generated from the burner (3) is controlled to a low temperature, and the grains are dried.

Contrary to the above, 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 a high temperature, and the grain drying rate is lower than the set grain drying rate. is dried.

The temperature of the hot air generated from the burner (3) is controlled to increase or decrease in stages according to the detected grain drying rate detected by the moisture detection sensor (7), so that the grain is There is no occurrence of drying of the grains, and the drying of the grains is completed within a predetermined time.

[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 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 IIL machine, (7) indicates a moisture detection sensor.

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 in the lower part.
) 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 storage chamber (1) is provided for detecting the moisture content of the grains during circulation drying and detecting the drying rate. A moisture detection sensor (7) of In order to achieve this, the temperature of the hot air generated from the burner (3) is controlled an appropriate number of times for each predetermined temperature amount, and the hot air temperature is changed to a high temperature or a low temperature. A grain drying control system for a grain dryer, characterized in that a control device is provided to control the grain amount, outside air temperature, set hot air temperature, etc.