JPS602873A - drying equipment - 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] The present invention resides in an apparatus for circulating drying grains.

In the grain rack H, there are generally four types of operations: 1) t, namely, the bowing of the grain to be dried into the grain drying rack, the discharge from the dryer, the draft drying and the drying by combustion. The loading of grains to be dried, IJI tut, and mountain breeze drying are accomplished by driving only the drive system (elevator motor, vane motor, etc.) of the drying device. In addition, drying by combustion (hereinafter simply referred to as "drying")
In addition to these, the fuel system (ignition heater, fuel supply pump, etc.) is also driven. Of the various operations performed by these grain dryers, the most important one is, of course, the drying operation. This drying work is carried out in the drying equipment (an automatic moisture meter attached to the drying equipment measures the moisture content of the grains to be dried several times when they are loaded into the drying equipment, and the average value of each measurement value is used as the initial value). A specific method for measuring the moisture content of grains to be dried involves crushing the measurement sample circulating in the grain circulation system between two electrodes of a moisture meter, and converting the measured value between the measurement electrodes into a DC voltage. However, depending on the method of extracting the measurement sample, large variations may occur between each measurement value.If there is a large variation between each measurement value, the It is quite possible that this will hinder the accurate calculation of the initial moisture value, which is the basis for determining the drying time and drying target temperature.Therefore, in the past, when carrying out drying work, the flow state of grains in the drying equipment was detected. Every time the detection operation time (several minutes) of the paddy flow sensor elapses, the automatic moisture Kl measures the moisture content of the grains in the grain circulation system, and when the number of measurements reaches 5, the drying equipment The arithmetic control unit installed in the control device calculated the average value between the above-mentioned measurement values to obtain the initial 1υ1 moisture value.As a result, it was not possible to uniformly collect measurement samples from the entire grain to be dried. It was difficult to obtain an accurate initial moisture value.

Therefore, the present invention aims to improve the above-mentioned problems of the prior art.The purpose of the present invention is to eliminate the large dispersion between each measured value by measuring the moisture content of grains in a conveyance path such as an elevator or an upper helix. It is an object of the present invention to provide a grain drying device that can reduce the initial moisture value and calculate the initial moisture value with high accuracy.

A feature of the present invention for achieving the above object is to provide a drying device having a dryer that applies a drying effect to supplied grains, and a conveyance path for loading the grains into the dryer. A moisture content measuring device 22 measures the moisture content of grains moving along a conveyance path at a specified point multiple times at time intervals from the start of sticking to the completion of sticking, and the measurement results of this moisture content measuring device are averaged. and an initial moisture content setting device 23 for determining the initial moisture content.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIGS. 1(A) and 1(B) are a side view of a grain drying device according to an embodiment of the present invention and an enlarged view showing the relationship between the grain drying device and a moisture content measuring device, that is, an automatic moisture meter; FIG. FIG. 3 is a block diagram of an apparatus according to an embodiment of the invention, FIG. 3 is a diagram showing a flowchart of the configuration of FIG. 2, FIG. 4 is a block diagram of an apparatus according to an embodiment of the invention, and FIG. FIG. 2 is a diagram showing flowcharts 1 to 1 of the configuration of FIG.

In FIG. 1(A), reference number 20a is an elevator 2 that constitutes a part of the conveyance path 20 that supplies grains to the drying device.
0b is an upper spiral; 21 is a main body of the grain drying device having a storage chamber for storing grains to be dried, a drying chamber, a hot air chamber, etc.;
2 is a moisture content measuring device, that is, an automatic moisture meter; 23 is an initial moisture content measuring device, that is, a control box (control device) containing a microcomputer 1, etc.; 21 is a fuel supply pump and a fuel supply solenoid valve (both The burner fuel system 25, which burns liquid fuel provided through a fuel tank (also not shown), is a paddy flow sensor.

FIG. 1(B) is a partially enlarged view of FIG. 1(A) as in the previous series, and reference numbers 22a and 22b are both electrodes that constitute the water content measuring device 22, 22a is a fixed electrode, and 22b is a moving electrode. As mentioned above, by taking a sample to be measured from among the dried grains moving in the first general conveyance path 20a, that is, the elevator, crushing it, and converting the resistance value between the two electrodes into a DC voltage, the grain can be measured. 1 and 22G, which are formed to measure the moisture content of the grains, are shutters that temporarily inhibit the movement of the measurement sample H.Refer to Figure 2, number 14; Microcomputer r1 arithmetic control a11 section 101, memory 102, measurement counter 103, input port (A), input port (B>), output port (C), output port (D), output port (E) has.

The calculation control unit 101 performs logical calculations and comparison operations. Input information to the arithmetic control unit 101 is provided via the digital input circuit 2, input port (A), and the analog input circuit 3, input port (B). Digital input circuit 2
The information given through is, for example, operation information 1 such as an ignition switch (not shown) that drives the combustion system 8 of the dryer.
0. Grain inspection information 11 such as the loading amount and grain type required to set the drying target temperature TO, and safety information input from the sensor group related to the drive system 8 and the combustion system 8 There is sensor information 9. The above-mentioned paddy flow sensor 25 belongs to the safety sensor group related to the drive system, detects the movement status of the dried grains passing through the input port of the elevator 20a forming the conveyance path 20, and digitally inputs the paddy flow sensor information. Arithmetic control unit 10 via circuit 2 and input port (A)
Give to 1. Reference number @16 is a timer counter having a time-limited operation function that operates the automatic moisture meter 226 at intervals of several minutes. The previous moisture value is displayed on the display device 4 under the control of the arithmetic control section 101 until C) is set and Curtains 1 to (C) are reset. Arithmetic control unit 101
calculates the drying target temperature peak (Tc) based on the grain information 11 and the outside air temperature (TA) taken in via the input boat (B).The input boat (B) has an analog input circuit 3.
The actual temperature inside the drying equipment (K8) and the outside air temperature (TA
) and moisture value information output from the automatic moisture meter are given to the calculation control 11 section 101.

In the automatic moisture level sensor 22, the paddy flow sensor 25 measures the moisture level of grains moving along the conveyance path every time a predetermined detection operation time (for example, 2 minutes and 40 seconds) elapses, and the moisture value information is sent to the analog input circuit 3. and the calculation control unit 1 via the input capo-1-(B).
01. The calculation control unit 101 stores the above information in the memory 102.

The display output of the arithmetic control unit 101 is given to the display device 4 via the output port 1-(C), and the display device 4 displays the actual temperature inside the drying device, the current moisture content of the grain, etc. based on this. . Digital output circuit 7 from output boat (D)
An on/off command signal is issued via the dryer drive system and the combustion system 8 such as the ignition heater and fuel supply pump, as well as the automatic moisture meter 22 and the alarm buzzer 15 are controlled via the buzzer drive circuit 14. It will be done. The outputs of the output ports 1 to ([) are given to the valve drive circuit 5, which is driven by the fuel control information output from the arithmetic control section 101 according to the comparison between the actual humidity (TB) and the target temperature (Tc). The supply electromagnetic valve 6 is controlled to open and close. Measurement number counter 103
is the number of times that the automatic water splitter 22 operates during loading of the grains to be dried into the dryer and measures the moisture content of the grains moving in the conveyance path 20 such as the elevator 20a and the upper helix 201). configured to count. As described above, the measurement number counter 103 increments the contents of the column every time the automatic moisture meter 22 measures the moisture value of grains moving along the conveyance path. The arithmetic control unit 101 resets the count contents when the gold side of the count reaches a predetermined value determined from experience, calls each measured value information stored in the memory 102, and calculates the average value. and displays it on the display device 4 via the output port (C,).

The memory 102 contains control programs and the like, and also stores necessary data.

The control operation of the above configuration will be explained below using the diagrams [1-gear-1 to
This will be explained using the following.

The average moisture value of the grain to be dried is displayed while the grain is stuck in the drying device and circulating through the grain circulation system.C'
It is not done before the grain is staked. Therefore, the operation of step 30 is performed after the grain has been loaded into the machine.

When the A pelleter is provided with the loading operation information for the grain drying equipment, it is transferred to the operation information 10 and digital human power 2.
and is given to the calculation control unit 101 via the input port (A). When the arithmetic control unit 101 recognizes that the stakeout operation information has been given by the operation information 10 (step 31), the calculation control unit 101 outputs the output boat (D) and the digital output circuit 7.
Drive systems related to stakeout work (elevators,
(upper helix, diffusion device, etc.) 8.
step 718). Next, the calculation control unit 101 sets the contents of the timer counter 16 to C. The value of C is a positive integer and is set to match the time (for example, 4 minutes) during which the paddy flow sensor 25 performs one detection operation (step 49).

The arithmetic control unit 101 sets the timer counter 16 at step 49.
After inputting the contents to C, a measurement command signal is sent to the automatic moisture meter via the output port <D> and the digital output circuit 7 (step 50). Next, the performance control unit 101 takes in moisture value information (M) given from the automatic moisture meter 22 via the analog input circuit 3 and input port (B), and temporarily stores this in the memory 102. (Step 51). The calculation control unit 101 reads the moisture value information (M) from the memory 102 and calculates the total moisture value (Ms). The total moisture value (Ms) is calculated by S1 using the formula MS - MS +M. The calculation control unit 101 stores this total moisture value (Ms) in the memory 102 and increments the contents of the measurement number counter by 1 (step 552).
). Next, the calculation control unit 101 displays the measured moisture value (
M) is displayed (step 53). The arithmetic control unit 101 determines whether the content of the measurement number counter has reached the empirically obtained value N and the operating information for the stop switch of the drying device has been given (step 54), and this operating information has not been given. If not, the contents of the timer counter 16 are decremented (step 57). Next, the calculation control section 10
1, it is determined whether the contents of the timer counter 16 have been reset (step 58), and if they have not been reset, the operation from step 537'J1 to step 58 is repeated. The calculation control unit 101 performs step 5.
When it is recognized at step 8 that the contents of the timer counter 1G have been reset, the process returns to step 19 again and step 54r:
When the content of the measurement counter 103 reaches N, this loop continues until operation information for the stop I-switch is given. When the arithmetic control unit 101 recognizes that the stop switch operation information has been given in step 54, it stops driving the drive system 8 via the output port (D) and the digital output cuff (step 55). Next, the calculation control unit 101 calculates the average moisture value MS@. The average moisture value MS is determined by the formula MS = MS /N (Step 5
6). When the arithmetic control unit 101 outputs the average moisture value 8°S of the dried grains in step 5G, it displays the average moisture value MS on the display device 4 via the output port (C) (step 30). The value digitally displayed in step 30 becomes the initial moisture value at the time of tensioning. Arithmetic control unit 101
Since the stop switch was turned on in step 54, the stake-out switch is in the OFF state, and if the operator does not provide operation information 10 for the stake-in switch again, the process moves to step 32 (step 31). Next, the arithmetic control unit 101 connects the digital input circuit 2 and the input port (A
) upon recognizing that the drying operation information 10 has been given (step 32). Sends a drive command signal to the drive system and combustion system 8 via the output port (D) and digital output circuit 7, and also supplies fuel to the valve drive circuit 5 via the output port (E) to drive the electromagnetic valve 6. A command signal is sent (step 35). Next, the calculation control unit 101 sets the contents of the timer counter 16 to C. The value of C is a positive integer, and is made to match the time (for example, 4 minutes) that the paddy flow sensor 1/25 performs one detection operation (step 3).
6). After setting the contents of the timer counter 16 to C in step 36, the arithmetic control unit 101 outputs the output port (D).
Then, a measurement command signal is sent to the automatic moisture meter 22 via the digital output circuit 7 (step 37). Next, the arithmetic control unit 101 inputs the analog input circuit 3 from the automatic moisture 1122.
and the moisture value information (M) given via the input boat (11), and temporarily stores it in the memory 102.
(Step 38). The arithmetic control unit 101 has a memory 102
The moisture value information (M) is called from , and the average moisture value Qs is calculated. The average moisture value is during the drying operation is tis = 41
5Ms +115M formula e is calculated (step 39)
. The arithmetic control unit 101 temporarily stores the average moisture value calculated in step 39 in the memory 102, and also stores it in step 38.
Call up the moisture value (M) taken in and connect it to the output port (C
), the moisture value (M) is displayed on the display device 4 (step 40). Next, the arithmetic control unit 101 performs drying based on outside air temperature (TA) information and drying device internal temperature (King 8) information 12 given to the paternal side at predetermined intervals via the analog input circuit 3 and input port (B). Target temperature (T
c> is corrected. The arithmetic control unit 101 controls the opening and closing of the fuel supply electric field valve 6 by varying the on-time duration of the fuel supply amount control pulse signal based on this correction value and sending the control pulse signal to the valve drive circuit 5. (Step 41). The arithmetic control unit 101 determines whether operation information for the stop switch of the drying device has been given (step 42), and if this operation information has not been given, it decrements the contents of the timer counter 16 (step 46). Next, the arithmetic control unit 101 determines whether the contents of the timer counter 16 have been reset (step 57).
), if it has not been reset, repeat the operations from step 40 to step 47. Here, the fact that the timer counter 16 has been reset to 1 means that the paddy flow sensor 2
This means that the predetermined detection operation time of 5 has ended.

The arithmetic control unit 101 sets the timer counter 1 in step 47.
When it is recognized that the contents of 6 have been reset and 1 has been found, the process returns to step 36 and repeats this loop until the stop switch operation information is given in step 42.

When the IUI calculation control unit 101 recognizes that the stop switch operation information has been given in step 42, the IUI calculation control unit 101 outputs the output capo.
(D> and the drive of the fuel system 8 is stopped via the digital output circuit 7 (step 43). Next, the arithmetic control section 101
is a predetermined period of time (5 minutes) after the combustion system 8 stops driving.
It is checked whether or not the period has elapsed (step 44). The arithmetic control unit 101 repeats the above operation until it recognizes in step 44 that the predetermined time has elapsed. Arithmetic control 21
When the first part 101 confirms that the predetermined time (5 minutes) has elapsed in step 44, it stops driving the drive system 8 of the drying device via the output boat (D>) and the digital output circuit 7 (step 45). The reason why we decided to wait a predetermined time interval (5 minutes) after stopping the drive of the combustion system 8 in step 43 until stopping the drive of the drive system 8 in step 45 is because the user This is to stop the operation after driving the drive system 8 for a certain period of time and cooling the burner for safety reasons.
After stopping the driving of the drive system 8 in Step 5, the average moisture value MS is called from the memory 102 and displayed on the display device 4 via the output port (C) (Step 3
0). Since the stakeout operation has already been completed, the arithmetic control unit 101 moves to the next step 32 unless stakeout operation information is given again via the digital input circuit 2 and the input port (A) (step 31). .Next, the arithmetic control section 1
01 is J where the tensioning operation information was given again for additional drying etc.
: If this is the case, the process from step 35 to step 45 is repeated, but if not, the process moves to the next step 33 (step 32). Arithmetic control unit 10
1 recognizes that the discharge operation information has been given (step 33), and drives a predetermined drive system ([1-tally valve, lower lazen, etc.) to discharge the grains to the outside.Step 34 ), but if no discharge operation information is given, the operations from step 30 to step 33 are repeated.

Next, the block diagram of the apparatus shown in FIG. 4 is similar to that shown in FIG. 2, so the explanation thereof will be omitted.

Figure 5 is the flowchart 1 of the configuration shown in Figure 4.
Since it is almost the same as that shown in the figure, only the different parts will be explained. When the calculation control unit 101 goes to step 54 and determines the average moisture value MS to be 0, it proceeds to the next step 59.

The calculation control unit 101 calculates σ/MS-M1- based on the MS extracted in step 54. Arithmetic control unit 101
If it is recognized that σ/S-M1->α is not the case, MS is displayed on the C display device 4 via the output port (C) (step 30), but if it is determined that σ/S-ML>α. Then, the output capo-1-(D) sends a command to the buzzer drive circuit 14 via the digital output circuit 7 to drive the alarm buzzer 15 (step 60). In step a-3 and step 55, σ: variation in moisture value, ML: finished moisture value, α: a certain value obtained based on empirical rules.

The arithmetic control unit 101 checks whether the alarm buzzer stop switch operation information has been given (step 61), and the platform to which the above operation information has been given moves to step 30.

The arithmetic control unit 101 repeats this determination as many times as possible if the opening operation information is not provided.

As explained above, according to the present invention, a moisture content measuring device is installed in the conveyance path, and the number of times obtained as a rule of thumb at the time of loading is determined by the drying device. A highly accurate initial moisture content can be obtained without having to install multiple moisture content measurement devices throughout.

Therefore, it is possible to accurately predict the end time of the drying time, and to provide a drying apparatus that is free from overdrying and from cracking the shell.

[Brief explanation of the drawing]

1(A) and 1(B) are a side view of a grain drying device according to an embodiment of the present invention, and an enlarged view showing the relationship between the grain drying device and the moisture content measuring device I41, that is, the automatic moisture content δ1; 2 is a block diagram of an apparatus according to an embodiment of the present invention, FIG. 3 is a diagram showing the configuration of FIG. 2, and FIG. 4 is a block diagram of an apparatus according to an embodiment of the present invention. FIG. 5 is a diagram showing a flowchart 1 having the configuration shown in FIG. 4. 22... Moisture content 1111] constant device (automatic moisture, i+)
23...Asaaki water content''$=setting device (control device) 1st (a) (shi)

Claims (1)

[Claims] In the drying field, which applies a drying effect to the supplied grains, and the conveyance path through which the grains are put into this dryer, the In conveyance path is connected at a specified point on this conveyance path. The moisture content of the grains to be transferred is started to be injected, and the moisture content measuring device determined by IJI is used multiple times at time intervals until the moisture content of the grains to be transferred is completed. A drying device characterized by having a first 1!11 moisture content setting device that determines the initial moisture content by averaging the results.