JPH0347100A - Method for automatic operation of batch type crystallization tank apparatus - Google Patents

Abstract

PURPOSE:To eliminate the need of troublesome programming operation by memorizing an output of a hardness meter, kind of a valve mechanism and kind of opening and closing operation by manual operation and performing the memorized opening and closing operation of the valve mechanism when the memorized output value of the hardness meter and a sensed value coincide by automatic operation. CONSTITUTION:Manual operation is initially performed to incorporate and memorize an output of a hardness meter 8, the kind of a sugar liquid valve 4 and a watering valve 5 and kind of opening and closing operation in a controller 9 at the time of opening and closing operation of the valves 4 and 5 to which limit switches 10 and 11 output an opening and closing signal. Thereby, inputting and setting of a program for the whole process are carried out and the process is transferred to automatic operation. When the sensed value of the hardness meter 8 coincides with an output value of the hardness meter 8 memorized in the controller 9, the valves 4 and 5 are subjected to opening and closing operation based on opening and closing data of the valves 4 and 5 simultaneously memorized in the controller 9. As a result, the automatic operation of the same valve operation as that of the manual operation can be readily carried out without a need for performing troublesome programming operation as opposed to a conventional method.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to, for example, growing crystals of sugar, etc. in batch crystallization cans.
The present invention relates to an automatic operation method for a batch-type crystallization tank device that is being opened.

[Prior art] Conventionally, when growing sugar crystals in this type of batch crystallization, operation d involves determining the hardness (fluidity) of the slurry (LA condensation mixture containing crystals) in the crystallizer. ), a solution for growing crystals and water or hot water for dissolving derived unnecessary fine particles are supplied into the crystal can by opening and closing the solution valve and differential water valve as appropriate. That's what I was doing.

However, when opening and closing the valve relies on the hands of an operator, as in the above-mentioned conventional method, the operation tends to vary depending on the operator, which may affect the quality of the product. There was a problem in that the burden involved was also large.

[Problem to be solved by the invention]

Therefore, in order to solve the above-mentioned problem, it has been considered to automate the above-mentioned pre-heightening process using a computer.

In this case, in order to operate the computer, it is necessary to input and set the relationship between the hardness of the slurry in the crystallizer and the opening/closing operations of the six valves as data, but the opening/closing operations of the valves take approximately 30 to 80 steps. , In order to confirm the results of the program, repeated operations such as verification and modification are required after the program is created, which poses a problem in that creating the program is time-consuming.

The present invention has been made in view of the above circumstances, and its purpose is to enable an operator who does not have computer knowledge, especially complicated program creation skills, to automatically and easily create a program, and to smoothly create a program. It is an object of the present invention to provide an automatic operation method for a batch type crystallizer device that can be operated automatically and is easy to operate.

[Means to solve the problem]

In order to achieve the above object, the automatic operation method of a batch type crystallizer device of the present invention includes a hardness meter that detects the hardness of an object in the crystallizer, and a solution or water to be supplied into the crystallizer. The opening/closing signal output means includes a valve mechanism that operates the supply amount and an opening/closing signal output means that outputs an opening/closing signal when the valve mechanism is opened/closed, and is manually operated in advance and is output when the valve mechanism is opened/closed. The output of the hardness meter at this point, the type of the valve mechanism, and the type of opening/closing operation are sequentially stored in the control device by the opening/closing signal of When the output value of the hardness meter and the detected value of the hardness meter match, the opening/closing operation of the valve mechanism stored at the same time is performed.

[Effect]

In the automatic operation method of a batch crystallizer device of the present invention,
First, perform manual operation, and at the time of the opening/closing operation of the valve mechanism where the opening/closing signal output means outputs the opening/closing signal, the output of the hardness meter, the type of valve mechanism, and the type of opening/closing operation are captured and stored in the control device. After inputting and setting the program for the process, the process shifts to automatic operation, and when the detected value of the hardness meter matches the output value of the hardness meter stored in the control device, the values are simultaneously stored in the control device. By opening and closing the valve mechanism based on the opening/closing data of the valve mechanism, automatic operation with the same valve operation as manual operation can be performed.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 3. FIG. 1 is a schematic diagram showing an example of a sugar brewing apparatus for carrying out the method of the present invention. In this figure, the symbol l is a vacuum crystal can, and a stirrer 2 is disposed in the vertical direction inside this vacuum crystal can. It is installed at the upper part of the crystallization can l.In addition, a piping 6 equipped with a sugar liquid valve 4 and a differential water valve 5 is connected to the vacuum crystallization can l in order to supply sugar liquid and water to the inside thereof. Furthermore, a level meter 7 is installed in the vacuum crystal can 1 to detect the liquid level below the can.

The electric motor 3 is equipped with a detector 8 that detects the load (power value or current) applied to the electric motor 3.
The output of this detector 8 and the output of the level meter 7 are input to a control device 9. Further, limit switches 10 and 11 are installed on the sugar liquid valve 4 and the differential water valve 5, respectively, to detect opening/closing operations of the valves. The opening/closing signal detected by the valve 11 or the opening/closing signal generated by the opening/closing operation switch that opens and closes the valve is input to the control device 9. The control device 9 also controls the level meter 7. Detector 8. The six valves 4 and 5 are opened and closed based on the signals from the switches 10 and 11, respectively, to control the growth of crystals in the vacuum crystal can.

Next, a case will be described in which the method of the present invention is carried out using the sugar brewing apparatus configured as described above.

First, manual operation is performed by a skilled operator (front handle). That is, the operator operates the stirrer 2 with the electric motor 3, and while checking the white condition inside the vacuum crystallization can 1, for example, as shown in FIG. and open/close the water difference valve 5. In this case, by opening and closing the six valves 45, the hardness of the lower white changes in a waveform as shown in FIG. Along with this, 6 valves 4
．． Since the opening/closing operations of 5 are notified to the control device 9 by each limit switch to, 11, the control device 9 receives the opening/closing signal from each limit switch 10.11 at that point in time (M V l~ The detection value of the detector 8 of Mve) is taken in, and this detection value (hardness below the white) is
The distinction between the water difference valve 5 and the open operation and the close operation are sequentially stored in the storage area I2 as shown in FIG.

In this way, when manual operation is completed while input data is being input to the control device 9, automatic operation based on the input data becomes possible. That is, in the automatic operation, the stock solution is put into the vacuum crystallization can I and the stirrer 2 is operated, as in the manual operation. In this state, the condition inside the vacuum crystal can 1 is monitored by the detector 8, and the detected value of the detector 8 and the hardness d of the white lower part stored in the storage area 12 of the control device 9 are sent to the control device. Compare in 9.

Then, the detection value of the detector 8 and the storage area 12
When the hardness d of the white lower part stored in matches, the third
As shown in the figure, the sugar solution valve 4 is opened based on the valve data stored in the storage area 12. Then, in order, the hardness d of the white bottom.

Compare d, d with the detection value of the detector 8. When they match, the type of valve and the type of valve opening/closing operation stored in the storage area 12 are determined along with the hardness in the lower white. Six valves 4 and 5 are operated based on the data.

In this way, by using the program confirmed in the actual process of making sugar during the manual operation, it is possible to easily operate the valves in the same way as a skilled operator (hand making sugar).
Desired crystals can be easily obtained.

In the present embodiment, the hardness of the white undertone in the vacuum crystal il is detected by detecting the load on the electric motor 3, but it is also possible to detect a change in conductivity.

Further, although this embodiment has been described with respect to growing sugar crystals, the present invention is not limited to this, and can be applied to various crystal growing processes using crystal cans.

〔Effect of the invention〕

As explained above, in the automatic operation method of the batch type crystallizer device of the present invention, first, manual operation is performed, and at the time of the opening/closing operation of the valve mechanism where the opening/closing signal output means outputs the opening/closing signal, the control device is activated. After the output of the hardness meter, the type of valve mechanism, and the type of opening/closing operation are captured and memorized and the entire process program is manually set, automatic operation is started, and the detected value of the hardness meter and the type of opening/closing operation are stored in the control device. By opening and closing the valve mechanism based on the opening/closing data of the valve mechanism simultaneously stored in the control device at the time when the output value of the hardness meter matches the output value of the hardness meter, automatic operation with the same valve operation as manual operation can be performed. This method has an excellent effect in that it can be easily performed and there is no need to perform troublesome program creation work as in the past.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention,
Figure 1 is a schematic configuration diagram showing an example of a sugar brewing device, and Figure 2 is a 6
A characteristic diagram showing changes over time in the opening/closing operation of the valve and the hardness of the white undercoat in the crystal can, and FIG. 3 is an explanatory diagram showing the contents of the storage area in the control device. 1... Vacuum crystal can, 4... Sugar solution valve, 5... Differential water valve, 8 Detector (hardness meter), 9 Control device, TO, II limit switch (opening/closing signal output means), 12 Marking area .

Claims (1)

[Claims] An automatic operation method for a batch-type crystal can device that grows crystals in a crystal can, which includes a hardness meter that detects the hardness of an object in the crystal can, and a solution or water to be supplied to the crystal can. A valve mechanism that operates the supply amount of the valve mechanism, and an opening/closing signal output means that outputs an opening/closing signal according to the opening/closing operation of the valve mechanism. The output of the hardness meter at this point, the type of the valve mechanism, and the type of opening/closing operation are sequentially stored in the control device according to the opening/closing signal of the means, and then automatic operation is started and the information is stored in the control device. A method for automatically operating a batch-type crystal can device, characterized in that when an output value of a hardness meter and a detected value of the hardness meter match, opening and closing operations of a valve mechanism stored at the same time are performed.