JPS618590A - Cereal 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 generally relates to grain dryers, and in particular, the amount of loading of f2 cores to be dried into the dryer, the type of grain, The setting between the drying rollers is 4-1 (for grain dryers).

[(・１Recruitment skill 1・ji and σ its problem sada] Grain dryer t,
,! , general (automatic/manual) 91 or 1
Rot! ) Measuring the moisture content of the flour by rinsing the grains, controlling the dryer combustion system such as the fuel supply solenoid valve and burner combustion system according to the measurement results, and adjusting the hot air temperature, hot air drying time, etc. At the same time, ventilation drying work is also performed in which only the dryer drive system, such as the elevator motor and upper spiral, is driven.

By the way, use a dryer with the above configuration to perform proper drying work! For rice, it is necessary to prevent rapid hot air drying with high hot air temperatures and to prevent the dried grains from becoming overdried. However, in this type of conventional grain dryer, 1. .

A control target value for the hot air temperature is set according to the initial moisture content of the grains to be dried sampled during rock drying, the amount of grains to be loaded, and the type of grain, and the control target value for the hot air temperature is set according to the set self-sloping control target value and the operator. Depending on the set target moisture content, the heat level l drying time required for one process of drying work is automatically applied to the cellar 1. Until the set drying time has elapsed,
A hot air temperature detection system in which the control unit installed in the dryer is connected to the burner combustion system (89), l) 11
The combustion system is controlled in order to make the actual hot air temperature in the sand match the control target value based on the sensor information on the actual hot air temperature inside the dryer. Therefore, since it is not detected whether or not water has been removed from the grains during drying, it is difficult to prevent grain shell cracking or loss of fuel consumption due to overdrying. Moreover, the time required to dry the row culms is quite long, so in order to eliminate these problems, for example, the operator may periodically check the water removal rate of the grains and switch from hot air drying to ventilation drying. Alternatively, on the contrary, it was actually necessary to perform operations such as switching from ventilation drying to hot air drying.

``Purpose'' Therefore, the present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to automatically switch between ventilation drying and hot air drying depending on the degree of water removal from the grains to be dried. To provide a grain dryer capable of reducing fuel consumption during hot air drying work.

[Configuration] The features of the present invention for achieving the above object include means for detecting humidity in outside air, means for detecting humidity in exhaust air discharged from a dryer, and combustion control using a predetermined control signal. the dryer combustion system, and controls the drive of the dryer combustion system in accordance with the difference value between the humidity in the outside air and the humidity in the exhaust air, which is calculated based on the detected value provided by the detection means. A control means is installed on the grain dryer.

[Function] In the above configuration, when the difference value between the detected humidity in the exhaust air and the humidity in the outside air is large, ventilation drying is performed, and when the difference value becomes small, automatically switching to hot air drying. This was designed to save fuel consumption during hot air drying.

FIG. 1 is a partially crushed overall side view of a grain dryer according to an embodiment of the present invention, FIG. 2 is a block diagram according to an embodiment of the present invention, and FIG. 3 is a flowchart of the configuration of FIG. 2.

In FIG. 1, a grain dryer 1 is equipped with a control not shown.
1-L-71- Operation box 3 and drying element
It has an I combustion system 5 and a dryer drive system 7. (ㅅξ
11 Box 3 is a fuel setting device for setting the combustion angle supply skewer to the dryer combustion system 5 in multiple stages, and an adjustment completion switch f
, supplying outside air ventilation to each person for grain drying] I/N adjustment device that adjusts the rotation speed of I/N, adjustment run-1, drying switch, loading amount switch, grain type switch, target It is equipped with an operation switch 15 such as a moisture content setting switch. As shown in the figure, a humidity sensor 83 for detecting the humidity in the outside air is attached to the lower part of the operation box 3. The sensor will be explained in detail in FIG. 2.

The dryer combustion system 5 includes a fuel tank 31 mounted on the wall of the grain dryer 1, none of which are shown in the figure, an electromagnetic pump 19, and a second electromagnetic valve 21.
A ventilator tube (not shown) having the combustion chamber (not shown) inside thereof, and having means for supplying outside air ventilation from a fuel pipe and a fan (all of which are not shown) that communicate with the combustion chamber through a combustion chamber (not shown). It is made up of. The electromagnetic pump 1
9 or the electromagnetic valve 21, at least one of which is driven closed/closed by a fuel supply amount control pulse signal output from the control unit (not shown) to control the amount of fuel flowing from the fuel tank (not shown). control. On the opposite side of the combustion chamber (not shown), there is installed an air exhaust device equipped with an air conditioning fan (not shown) as shown in the figure. Humidity sensor for detecting the humidity in the exhaust air.

sensor 87 or M9'=j. The sensor will also be explained in detail in FIG.

The dryer drive system 7 includes an elevator 9, a lower spiral 27, an upper spiral, a rotary valve (all of which are not shown), and the like. The elevator 9 has an elevator motor 17, an elevator drive pulley 11, an elevator driven pulley 25, etc., a rotary valve (not shown), a lower lahine 2, etc.
The dried grains conveyed through the shaft 7 are fried to an upper helix (not shown) equipped with an upper helix pulley 13.

The lower urn 27 is driven by, for example, a body breaker (not shown) of the dryer 1, and transports grains given from a rotary valve (not shown) to the elevator 9 as described above.
Transport to. The upper helix (not shown) is driven by the driving force of the elevator motor 17 provided through the two-part helical pulley 13, and stores the grains fried by the elevator 9 (not shown). It is configured to be sent into the chamber.

FIG. 2 shows a block diagram of the "control" unit built in the operation box 3 mentioned above.
, input port 105, input port 1-107, output port 108, and output ports 1 to 109 to the right.

Cl) U 101 performs arithmetic logic operations and comparison operations. The input information of CPLJlol is given through the digital input circuit 59, input port 105, A/D conversion circuit 61, and input port 107.

Information provided to the CPU 101 via the digital input circuit 59 includes drying target temperature setting information, ie, hot air temperature setting information 63, safety sensor information 65, and operation information 67. Heat I! l Temperature setting information (TC) 63 sets a scale according to the type and amount of grain to be dried that circulates and covers the grain circulation system (elector 9, upper spiral, storage chamber, etc.) in the dryer 1. The C target heat Jul temperature is output from the target hot air temperature setting knob 69 that is automatically set. The safety sensor information 65 includes, for example, a drive system safety sensor that detects the drive status of the elevator motor 17, partial helix, rotary valve, lower helix 27, etc.

8 yen 71, and a combustion system safety sensor group 73 that detects the driving status of the dryer combustion system, such as the ignition heater and the fuel supply pump (namely, the electromagnetic pump). The operation information 67 is given from the operation switch group 15 for starting/stopping the dryer motor, igniting, etc., and setting the target moisture content.

The information given to the CPU 101 via the A/D conversion circuit 11 includes a sensor for detecting the actual temperature inside the dryer, that is, a heat input sensor.
The actual hot air temperature information 81 in the dryer 1 outputted from the n degree detection sensor 79, the outside air humidity information 85 outputted from the outside air humidity detection sensor 83, and the exhaust temperature information of the dryer 1! I device 1
There is exhaust air humidity information 89 outputted from an exhaust air humidity sensor 87 provided at 9.

The drive command signal given from the CPU 10'1 is
A boat 109, a fuel supply pump 19 via a digital output circuit 111, a fuel supply electromagnetic valve 21, a drive circuit (not shown) for a carburetor-theta 37, a combustion system 5 such as an ignition heater 35, and a drive system 7 such as an elevator motor 17. To each one!
I can get it.

The drive command signal given from CP1, 1101 is also given to the two fan motor drive circuits (not shown) via the analog output circuit 113.

The memory 103 contains a control program, etc., and also stores necessary data. Data (J, for example, the above-mentioned exhaust air) stored in the main frame 103
! There is 1 degree information 89, outside air humidity information 85 given from outside air humidity sensor 83, and the like.

- cpuloit, which has the functions described below.

- The target heat III temperature setting information (TO) 53 based on the type of grain to be dried and the tension G1 outputted from the target hot air temperature setting knob 69 is taken in through the digital input circuit 59 and the input port 105, and the information is is stored in the memory 103. ■Netsu J! Actual hot air temperature information 81 output from the temperature sensor 79 is taken in via the A/D conversion circuit 61 and the input port 1.07. ■ Calculating the difference value between the outside air humidity information 85 output from the outside air humidity detection sensor 83 and the exhaust air humidity information 89 output from the A/D conversion circuit 6 and the outside air humidity information 85 taken in in ■. The reference difference value data between the exhaust air humidity and the outside air humidity stored in the value memory 103 is compared. As a result of comparison in step 2, if the calculated value is larger than the reference value, general drying is performed in which only the dryer drive system 7 is driven, and if the reference value is larger than the calculated value, the combustion system 5 is also operated together with the dryer drive system 7. Driving hot air drying. Note that the above reference values are data obtained by empirical rules such as experimental values.

The control operation of the above configuration will be explained mainly with reference to the flowchart P shown in FIG.

Prior to starting the drying work, the operator sets the target heat F@6 temperature setting knobs to predetermined scales according to the type of grain to be dried and the amount of grain to be packed. The CPU 101 uses the setting information 63 given from the six setting knobs and the operation switch 15.
When it is recognized that the operation information 67 regarding ignition has been given (step 121), a drive command signal is output to the drying drive system (step 123). The CPU 101 sequentially takes in information 851 given from the outside air humidity detection sensor 83 and information 89 given from the exhaust air humidity detection sensor 87, and stores this in the memory 103 (step 12
5.127). The CPU 10I stores the information 85 stored in the memory 103 in steps 125 and 127.
．． The eight data are respectively called and the differences between them are calculated and compared with the reference value data stored in the memory 103 (step 129). If it is determined in step 129 that the difference value is larger than the reference value, the water removal rate of the grain is low, so the process goes through steps 125 to 127 and then returns to step 12 in order to continue the ventilation drying process for a while.
Repeat the steps up to step 5. On the other hand, when it is determined in step 129 that the standard value is too large as the lead content J, in step 131 the dryer combustion system 5 that covers the heater 35, fuel supply solenoid valve 21, etc. is driven. Then, the process shifts to hot air drying, and thereafter hot air temperature control is performed (step 133).

The above-mentioned contents are only related to one embodiment according to the present invention, and do not imply that the present invention is limited only to the above-mentioned embodiment. (It also belongs to the present invention that the control described above, for example, in step 14) is performed using an analog electronic circuit instead of a microamp coater.

[Effect] As explained above, according to the present invention, the dryer combustion system is driven in accordance with the difference value between the humidity in the outside air and the humidity in the exhaust air, which is calculated based on the detected value given from the detection means. Since it is controlled, it is possible to automatically switch between ventilation drying and hot air drying depending on the degree of water removal from the grains to be dried, and it is possible to save on fuel consumption during hot air drying work. We are here to provide you with the best grain dryer.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway overall side view of a grain dryer according to an embodiment of the present invention, FIG. 2 is a block diagram according to an embodiment of the present invention, and FIG. 3 is a configuration diagram of the grain dryer shown in FIG. I accept No. 1~. 1...Grain dryer 3...Operation box j)...*2 Dryer combustion system 10...11-1 Coater F'IJ'X...Y1・', <(11 - Hemp detection Shinza P+ 7”・J) 1. jli, i&j Br+,
-19 output figure 1

Claims (1)

[Claims] It has a means for detecting the humidity in the outside air, a means for detecting the humidity in the exhaust air discharged from the dryer, and a dryer combustion system whose combustion is controlled by a predetermined control signal. 1. A grain dryer comprising: a control means for controlling the drive of a dryer combustion system in accordance with a difference value between humidity in outside air and humidity in exhaust air calculated based on a detected value.