JPS61268974A - 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] What is the field of industrial application of this invention? ! This invention relates to a grain drying control method for a grain dryer.

Conventional technology Conventionally, regardless of the type of grain to be dried, the temperature of the hot air generated from the burner is detected by a hot air temperature detection sensor, and the temperature of the exhaust air passing through the exhaust chamber is detected by an exhaust air temperature detection sensor. ,
Based on the detected temperatures detected by these two detection sensors, the control device calculates and detects the virtual grain temperature at which the grains are heated, and the temperature of the grains during drying is always maintained at this calculated grain temperature. This method controlled the drying of grains by controlling the temperature of the hot air generated by the burner.

Problem to be Solved by the Invention While the grains stored in the storage chamber are allowed to flow down from this storage chamber into the drying chamber, hot air generated from a burner is ventilated from the hot air chamber to the drying chamber, and the exhaust chamber is closed. The grains flowing down the drying chamber are then exposed to the hot air and dried by suctioning and exhausting the air with an exhaust machine.

During this drying work, the temperature of the hot air generated from the burner in the hot air chamber is detected by a hot air temperature detection sensor, and the temperature of the exhaust air passing through the exhaust chamber is detected by an exhaust air temperature detection sensor,
Based on the detected temperatures detected by these two detection sensors, the control device calculates and detects the virtual grain temperature at which the grains are heated, and the temperature of the grains during drying is always maintained at this calculated grain temperature. In a dryer that controls grain drying by controlling the temperature of the hot air generated by the burner, for example, when drying beer grains, the temperature of the grains is above the critical grain temperature at which the germination rate does not decrease. As a result, the germination rate of these beer grains may decrease, and when drying paddy grains, the temperature of the grains may rise above the critical grain temperature at which monthly splitting does not occur. Therefore, this rice grain may break 1M during drying.

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 from 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), and is also generated from the heat exchanger (3). Hot air temperature detection sensor (7) that detects the hot air temperature
) and a hot air temperature detection sensor (8) that detects the exhaust air temperature of the exhaust air passing through the air exhaust chamber (5). The exhaust air temperature is used to calculate the virtual f2 temperature at which the grains should be heated according to the type of f2 grains, and these are determined based on the critical grain temperature for dry heating determined by the type of f2a A grain dryer characterized in that a control device is installed and controlled to lower the temperature of hot air generated from the burner (3) when the virtual grain temperature is higher than the critical grain temperature. The drying control method is used.

Effect of the Invention The grains flowing down from the storage chamber (1) into the drying chamber (2) are transported to the hot air chamber (4) by the hot air generated from the burner (3) being sucked by the exhaust 8L machine (6). Air is sucked and exhausted by the exhaust machine (6) through the M drying chamber (2) and the exhaust chamber (5), and the grains flowing down the drying chamber (2) are exposed to this hot air and dried. However, during this drying work, the hot air temperature detection sensor (7) detects the hot air temperature in the hot air chamber (4), and the hot air temperature in the hot air chamber (5) is detected.
) The exhaust air temperature detection sensor (8) detects the temperature of the exhaust air passing through the inside of Is the virtual grain temperature calculated and detected by the control device? ta temperature is compared with the grain heating limit temperature for each type of grain stored in the control device, and if the calculated grain temperature is higher than this limit temperature, the burner (3) Dry the grains by controlling the temperature of the hot air generated by the controller to be lower.

Effects of the Invention According to the present invention, the temperature of the hot air in the hot air chamber (4) and the temperature of the exhaust air passing through the exhaust chamber (5) can be detected by the detection sensor (
7) and (8), and based on this detected temperature, the temperature of the grains during drying is detected by the control device in a virtual calculation, and this calculated detected temperature and the limit recorded in the control device are Since the temperature of the hot air generated from the burner (3) is controlled by the control device so that the calculated detected temperature does not exceed the limit f2 grain temperature, beer grains and paddy grains cannot be dried. Even in the case of beer grains, the germination rate does not decrease because the grain temperature of the beer grains during drying does not rise above the limit f2 grain temperature at which the germination rate decreases. In the case of paddy grains, monthly splitting does not occur because the grain temperature of the paddy grains during drying does not rise above the critical grain temperature at which monthly splitting occurs.

Embodiment In the illustrated example, the machine wall (10) of the dryer (9) 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, and a ceiling plate is installed on the top of this machine 1 (10). (11), (
11), and an operating neck (12) is detachably attached to the front wall plate.

lv machine! ! ! :(10) A lower transfer gutter (1
3), and a grain collection room (13) is installed above the lower transfer gutter (13).
14) are provided and communicated with each other, and drying chambers (2), (2) are formed between the left and right ventilation mesh plates in the two parts of this grain collecting room (lO) and communicated with each other. )F!!Is has a structure in which feed-out valves (15), (15) for feeding and flowing grains are rotatably supported.

An inclined plate is installed on the upper side of the 6 ventilation mesh plates, and a 1jvJ is installed on the lower side.
A hot air chamber (4) is formed between the inner ventilation net plates, and communicates with a burner (3) housed in a burner case (16) provided in the front wall plate. , an air exhaust chamber (5) is formed between the outer ventilation net plate and the left and right wall plates, and communicates with an air exhaust fan (6) provided on the rear wall plate, and the hot air chamber (4) A hot air temperature detection sensor (7) for detecting the temperature of the hot air in the hot air chamber (4) is installed on the inner wall of the rear wall plate, and a hot air temperature detection sensor (7) is installed in the rear part of the exhaust chamber (5). This configuration includes an exhaust air temperature detection sensor (8) that detects the exhaust air temperature of the exhaust air passing through the room (5). A motor (17) is provided at the lower part of the rear wall plate, and the motor (17) moves the transfer helix 5. in the lower transfer gutter (13). Reconnaissance L Hikilubu (
15), (15), the exhaust fan (6), etc., are driven to rotate.

A fuel tank (18) is installed at the front of the dryer (9), and the burner (18) is installed at the outside of the bottom wall plate of the burner case (16).
3) A fuel pump (+9) is provided to supply fuel into the burner (3) from the fuel tank (18) through the fuel hose (20), the fuel pump (19) and the fuel supply pipe (21). The fuel is supplied to the burner case (1B), and the combustion air is transmitted through the feeder Jtfi (
22) and the blower motor (23) to connect the blower duct (20
The structure is such that air is blown into the burner (3) through the.

A storage chamber (1) is formed above the drying chamber (2), (2), and the ceiling plate (II) above the storage chamber (1);
(11) Upper transfer gutter with internal transfer helix (
25), a supply port for supplying the transferred grains into the storage chamber (1) is opened in the center of the upper transfer gutter (25),
A diffusion plate (2B) is provided below this supply port, and the f2 grains are uniformly diffused and returned into the storage chamber (1) by this diffusion plate (2B).

The grain raising machine (27) is removably attached to the front part of the front wall plate, and a packet conveyor (28) belt is stretched between the lower pulleys inside, and the upper end and the upper transfer gutter (25) are connected to each other. A dispensing tube (29) is provided between the starting end and the lower transfer gutter (13) for communication, and a supply gutter (3) is provided between the lower end and the terminal end of the lower transfer gutter (13).
A motor (31) is provided on the upper side of the shell elevator (27), and this motor (31) connects the packet conveyor (28) and the upper transfer gutter (25).
) is configured to rotate the transfer helix etc.

The operating device (12) is box-shaped and has a start switch (32), a stop switch (33), a hot air temperature setting indicator (30), a grain type setting indicator (35), etc. on the surface, and an internal The IJ has a configuration including a control device (36), and the control device (3B) inputs the operations of the switches (32), (33) and the settings (35), (3B), etc. an input circuit (37), each of the detection sensors (7),
An A-D converter (38) that performs A-D conversion of the detected value detected by (8), an input circuit (37) into which the converted value converted by this A-D converter (38) is input, and these inputs. circuit(
3? ), (37) A CPU (3ii1
) and an output circuit (40) that outputs various commands issued by this CPU (39).
The fuel pump (19) and each of the motors (17), (23), (31), etc. are controlled by the equipment M (3G) such as starting and stopping.

Limit aa humidity temperature for each type of grain is stored in the CPU (39), and by operating the grain type setting paper (35), this setting parameter can be set at the position of beer grains, for example. When the brewer (35) is operated, the hot air temperature detection sensor (7) detects the critical grain temperature of the beer grains and the hot air temperature in the hot air chamber (4), and the detected hot air temperature and the exhaust air temperature are detected by the hot air temperature detection sensor (7). The temperature of the grains during drying is calculated and detected by this CPU (39) based on the temperature of the exhaust air passing through the wind chamber (5) and the temperature of the exhaust air detected by the exhaust air temperature detection sensor (8). When the calculated grain temperature is higher than the limit temperature, this C
The PU (39) controls the fuel pump (19) that supplies fuel into the burner (3) and lowers the temperature of the heat generated from the burner (3). The structure is such that the temperature of beer grains does not rise above the critical grain temperature.

In addition, when starting the drying work, the hot air temperature control spraying (34
) to reach the hot air temperature set in the fuel pump ( ).
19) is controlled by the CPU (39), but when the corner detection sensors (7) and (8) start detecting temperature, this C is used to control the hot air temperature according to the temperature of the grains being dried as described above.
This configuration is controlled by the PU (39).

By operating the operating device (12), hot air generated from the burner (3) provided on the front wall plate is sucked and exhausted by the exhaust fan (6) provided on the rear wall plate, and the hot air chamber (4) The drying chamber (2) is ventilated, and the grains stored in the wall (10) of the dryer (9) are exposed to this hot air and dried while flowing down the drying chamber (2).

The pulp is paid out to the lower part by the feeding pulp (15), transferred and discharged into the supply gutter (3o) via the lower transfer gutter (]3) by the lower transfer helix, conveyed to the upper part by the grain raising machine (27), and Diffusion through the upper transfer gutter (25) with the transfer helix! (2G)
It is transferred and supplied to the upper part of the storage chamber (1) with this diffusion plate (2B).
When the grains are uniformly diffused and reduced, circulated and dried, and reach the specified moisture content, the control line M (3El
) to automatically stop the dryer (9), but during this drying work, the hot air temperature detection sensor (7) detects the hot air temperature in the hot air chamber (4), and the exhaust chamber ( 5) The exhaust air temperature detection sensor (8) detects the temperature of the exhaust air passing through the inside, and the detected temperature detected by the corner detection sensors (7) and (8) determines the grain temperature during drying. The grain temperature calculated and detected by the device (311) and the limit grain temperature stored in the control device (38) are calculated and detected by the control device (38).
3B), and the burner (3B) is set so that the grain temperature during drying detected by the calculation does not rise above the critical grain temperature.
The grains are dried by controlling the fuel pump (19) that supplies fuel into the burner (3) with the control device (36) and controlling the temperature of the hot air generated from the burner (3) to be low.

The corner detection sensors (7) and (8) measure the grain temperature for each type of grain to be stored and dried in the wall (10) of the dryer (9).
) is calculated and detected by the control device (36) of the operating device (12) based on the hot air temperature and exhaust air temperature detected by the controller (36), and the grain temperature detected by this calculation is stored in the control device (36). The temperature of the hot air generated from the burner (3) is controlled based on this comparison with the limit temperature of each type. , Wq ratio does not occur in the rice grains.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention. ff$1 is a block diagram, FIG. 2 is a partially cutaway side view, FIG. 3 is a partially cutaway front view, and FIG. 4 is a dryer. It is an enlarged front view of a part. In the figure, (1) is a storage chamber, (2) is a drying chamber, (3) is a burner, (4) is a hot air chamber, (5) is an exhaust chamber, (6) is an exhaust HL machine, (7) (8) indicates a hot air temperature detection sensor, and (8) indicates an exhaust air temperature 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 hot air temperature detection sensor (7) for detecting the hot air temperature of the hot air generated from the burner (3) and the air exhaust chamber. (5
) is provided, and an exhaust air temperature detection sensor (8) is provided to detect the temperature of the exhaust air passing through the exhaust air.
8) calculates the virtual grain temperature at which the grain should be heated according to the type of grain based on the hot air temperature and exhaust air temperature detected by The present invention is characterized by providing a control device that controls the temperature of the hot air generated from the burner (3) to be lowered when these virtual grain temperatures are higher than the critical grain temperature based on the critical grain temperature. A grain drying control method for a grain dryer.