JPH08103251A - Laver formulation liquor concentration control unit and method for controlling the same - Google Patents

Abstract

PURPOSE: To provide a laver formulation liquor concentration control unit for producing tissue paper-like laver, and to provide a method for controlling the concentration. CONSTITUTION: The concentration of a laver formulation liquor prepared by mixing laver stock with water is optically detected by a concentration detecting means 21, the color of the laver in the liquor is detected by a laver color detecting means 22, and based on the concentration and laver color detected above and a set concentration set by a concentration setting means 11, a concentration control means 4 regulates and controls the concentration of the layer formulation liquor. Thereby, the concentration to be an object for regulation can be precisely regulated and controlled to the set concentration compatible with the various laver stock characteristics to be aimed irrespective of the variations in the characteristics, quality, grade, disposition, etc., of raw algae of laver, and tissue paper-like laver as the final product can be adapted to the target quality.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seaweed preparation concentration control device and method for controlling the concentration of seaweed preparation at the time of producing paper leaf seaweed, and in particular, it relates to the type of nori seaweed that is sequentially loaded. The present invention relates to a seaweed preparation concentration control device and method for controlling the concentration of seaweed preparation.

[0002]

2. Description of the Related Art Conventionally, an apparatus of this type has been disclosed in JP-A-61-161.
There is one disclosed in Japanese Patent No. 227766. This conventional device is shown in FIGS. FIG. 12 is an overall block configuration diagram of a conventional device, and FIG. 13 is a front view of a control panel in the conventional device. In the figure, the conventional apparatus detects the concentration of the seaweed mixed liquid 800 stored in the concentration adjusting tank 81 of the concentration adjusting unit 8 and detects the detected concentration and the concentration setting unit 1.
Based on the set concentration set in 1, the concentration control unit 40 adjusts and controls the concentration of the seaweed preparation 800 stored in the concentration adjusting tank 81, and the current value display 68 digitally displays the detected concentration. At the same time, the set concentration is displayed on the set value display 69.
Is a configuration in which the number of digits of the current value display 68 and each digit position are aligned and digitally displayed.

The concentration adjusting tank 81 comprises a seaweed mixed solution 800 having a concentration close to an appropriate concentration from the blender 80 and a water supply pump 8.
It is installed so that the water from the water tank 82 supplied by No. 3 flows in and is stored. In addition, the concentration adjusting tank 81 has a drainage pump 8 in which a filter screen 87 is attached to the outlet.
4 is provided, and when the concentration is low, the moisture is filtered and discharged from the concentration adjusting tank 81. Further, in the concentration adjusting tank 81, the seaweed preparation 800 which is a mixture of seaweed and water stored in the tank
A concentration detecting unit 21 for detecting the concentration of water, and a float switch 86 that operates when the water level in the tank reaches the set upper limit water level and lower limit water level and sends an electrical signal are attached. .

The present value display 68 and the set value display 6
Reference numeral 9 denotes a panel meter for digitally displaying the concentrations of the present value and the set value of the seaweed mixed solution 800 by numbers of about three digits, which are arranged in two rows vertically at the center of the control panel 95. On the surface of the control board 95, a density adjustment dial 110, light and shade display lamps L1, L2, L3, L4, L5,
Input switch 830 for water pump 83, drain pump 8
4 input switch 840, alarm buzzer 79, switch 790 for this alarm buzzer 79, manual-automatic changeover switch 820, and power switch 810, respectively.

The concentration detector 21 has a light emitting portion 21a having a light emitting element such as a light emitting diode and a light receiving element having a light receiving element such as a phototransistor or a photodiode whose electric output changes according to the amount of light received. This is a configuration having the portion 21b as a sensor. The optical signal emitted by the light emitting unit 21a passes through the mixture and reaches the light receiving unit 21b, and the light receiving unit 21b generates an output signal that changes depending on the amount of transmitted light. This output signal is amplified by the amplifier 21d, compared with the reference signal of the set concentration output from the set value generator 111 by the differential amplifier 33, and after the deviation value is amplified, the voltage discriminator 3
4 is supplied. The voltage discriminator 34 discriminates the voltage signal into, for example, five stages according to the magnitude of the voltage.

The discriminated five-stage voltage signals are supplied to the grayscale display section 77, and one of the grayscale display lamps L1, L2, L3, L4, and L5 is supplied in accordance with the magnitude of the voltage. Is turned on, and the concentration of the seaweed preparation 800 detected by the concentration detector 21 is displayed in comparison with the set concentration value. The light / dark display lamp L1 has the maximum high density "darkness", the lamp L2 has a medium high density "dark", the light / dark display lamp L3 has an appropriate darkness "good", and the light / dark display lamp L4 has a medium density. Is set to display the low density "light" and the maximum density display lamp L5 displays the low density "light".

Next, the operation of controlling the concentration of the seaweed preparation in the conventional apparatus based on the above construction will be described. First, the nori seaweed alga is cut into small pieces with a mincing machine (not shown) to be minced, and the minced nori seaweed is washed with water to remove salts and impurities, and then supplied to the blender 80. .
Water is also supplied to the blender 80 at the same time as the minced nori seaweed algae, so that the seaweed blending solution 800 is almost equivalent to obtain paper leaf nori with a desired thickness.

The seaweed formulation 800 is supplied from the blender 80 into the concentration adjusting tank 81. When the water level of the seaweed preparation liquid 800 stored in the concentration adjusting tank 81 reaches the set upper limit water level, the float switch 86 operates and the limit signal is fed back to the preparation machine 80 side, and the supply from the preparation machine 80. Stops. The seaweed preparation liquid 800 stored in the concentration adjusting tank 81 is stirred by the stirrer 85 to prevent the separation of the seaweed and the water, and the concentration thereof is detected by the concentration detecting unit 21 installed in the concentration adjusting tank 81. To be detected.

In addition, the seaweed preparation 800 in the concentration setting unit 11
The appropriate density value of is set. The set density value is digitally displayed on the set value display 69, and the detected density detected is displayed on the current value display 68, respectively. The present value display 68 and the set value display 69 display the number of digits and each digit position in alignment, so that the operator can easily judge each state.

The detected detected density value and the set density value are input to the differential amplifier 33, and the deviation density value is calculated and output to the voltage discriminator 34. The voltage discriminator 34 discriminates and outputs in all stages according to the signal voltage value of the deviation concentration value. The timer circuit 4 is operated according to each of the discriminated signals.
4 and 46 are started to drive the drive circuits 45 and 47 for the time set by the timer circuits 44 and 46. The drive circuit 45 drives the drainage pump 84 to discharge water to increase the concentration, and the drive circuit 47 drives the water supply pump 83 to supply water to reduce the concentration. In this way, the seaweed preparation 800 adjusted to an appropriate concentration is supplied from the concentration adjusting tank 81 to the seaweed making machine (not shown) to make the seaweed, and the remaining seaweed preparation 80
0 is returned to the concentration adjusting tank 81.

When the water level in the concentration adjusting tank 81 drops to the set lower limit water level, the float switch 86 operates and a signal is sent to the blender 80, so the valve device of the blender 80 operates and the water level is set. The seaweed preparation 800 is supplied to the concentration adjusting tank 81 until the upper limit water level is reached. As described above, even when the concentration of the seaweed preparation 800 in the concentration adjusting tank 81 is out of the range of the proper concentration, it is possible to automatically adjust the concentration to the proper concentration, and thus the product paper. The thickness of leaf laver is properly and evenly achieved.

[0012]

Since the conventional seaweed preparation concentration control device is configured as described above, it is assumed that feedback control is performed so that the set concentration and the detection concentration of the seaweed preparation are matched. Also, depending on the characteristics, quality, variety, condition, etc. of the nori seaweed, the final product of the paper leaf nori, for example, the weight per predetermined number of paper leaf nori, will vary, and the paper that meets the target conditions There is a problem that the concentration of the seaweed preparation for producing leaf seaweed cannot be accurately adjusted.

That is, the conventional seaweed mixture concentration control device is
Since the hardness and softness of the seaweed raw material and the degree of color density of the seaweed vary depending on the time of collection, area of collection, brand, etc., the concentration detection unit 21 detects a change in the amount of light transmitted by the seaweed preparation, and the detected value is the seaweed preparation In addition to the above concentration, the pigment of seaweed, which is the raw material, is also contained and detected. Therefore,
If the color of the seaweed as the raw material becomes lighter, the amount of light transmitted through the concentration detecting unit 21 increases even if the concentration of the seaweed mixed liquid 800 is constant. Output the corresponding output signal. Concentration control unit 40
In order to operate the drainage pump 84 by this output to discharge the amount of water corresponding to the apparent change in concentration,
There is a drawback that the concentration of the seaweed formulation 800 becomes thicker, and as a result, the paper sheet seaweed as a product becomes thicker.

If the color of the seaweed as the raw material becomes darker, the amount of light transmitted through the concentration detecting unit 21 will decrease even if the concentration of the seaweed preparing liquid 800 is constant. It is judged that the concentration is high and the paper leaf laver as a product becomes thin. As described above, the conventional seaweed mixture concentration control device detects the change in the amount of transmitted light of the mixture of seaweed and water as the concentration detector 21, so that the product can be obtained as a product depending on the shade of the seaweed as the raw material. There was a drawback that the thickness of the paper leaf laver was different.

[0015] It takes a long time's intuition and skill to adjust the concentration of the paper laver according to various states of the seaweed protozoa from the set concentration or the detected concentration of the seaweed preparation. However, there has been a problem that the concentration may be erroneously adjusted depending on various states or types of the seaweed raw material even with the intuition and skill of many years.

Further, in the concentration adjustment work of the seaweed preparation, since the various states or kinds of the seaweed source alga vary depending on the loading of the seaweed source algae, the seaweed preparation solution suitable for each kind of the seaweed source algae is different. Since the operator must immediately judge and adjust the state, there is a problem that the concentration adjustment is extremely difficult and complicated.

The present invention has been made to solve the above-mentioned problems, and the final product, paper, is prepared by adjusting the concentration of the seaweed preparation in consideration of the degree of the seaweed color in the detected concentration that serves as a reference for feedback control. It is an object of the present invention to provide an apparatus and method for controlling the concentration of a seaweed preparation, which can adapt leaf seaweed to a target quality.

[0018]

FIG. 1 is a diagram for explaining the principle of the device of the present invention. In the figure, the nori mixed solution concentration control device according to the present invention is a nori mixed solution concentration control device for controlling the concentration of a nori mixed solution prepared by mixing a nori raw material and water. Concentration setting means for setting the concentration, concentration detecting means for optically detecting the current concentration of the mixed seaweed preparation and outputting it as the detected concentration, and the seaweed to be controlled or the result of the control being sent. Nori seaweed color detecting means for detecting the color of the seaweed and outputting it as the detected seaweed color, and concentration control means for adjusting and controlling the concentration of the seaweed preparation based on the set concentration, the detected concentration and the detected seaweed color. is there.

Further, in the seaweed preparation concentration control device according to the present invention, the concentration control means, if necessary, the correction calculation means for correcting the seaweed color component contained in the detected concentration by the detected seaweed color, and the corrected detection. A deviation concentration calculator for calculating the deviation concentration by comparing the concentration with the set concentration, and a concentration adjusting means for adjusting the concentration of the seaweed preparation based on the deviation concentration are provided.

Further, in the concentration control device for seaweed preparation according to the present invention, if necessary, the concentration control means includes a deviation concentration calculating section for calculating the deviation concentration by comparing calculation of the detected concentration and the set concentration, and the deviation concentration is included in the deviation concentration. It is provided with a correction calculation means for correcting the seaweed color component to be detected by the detected seaweed color and a concentration adjusting means for adjusting the concentration of the seaweed preparation based on the corrected deviation concentration.

FIG. 2 is a diagram for explaining the principle of another apparatus of the present invention. In the figure, another nori preparation concentration control device according to the present invention is a nori preparation concentration control device for controlling the concentration of a nori preparation liquid obtained by mixing nori raw material and water. The concentration setting means for setting the set concentration of, the concentration detecting means for optically detecting the current concentration of the mixed seaweed preparation and outputting it as the detected concentration, and the degree of shade of seaweed color are set. It is provided with a nori color input means for inputting, and a concentration control means for adjusting and controlling the concentration of the seaweed preparation based on the set concentration, the detected concentration and the degree of the input nori color.

In addition, in the concentration control device for seaweed mixed solution according to another aspect of the present invention, the concentration control means corrects the seaweed color component included in the detected concentration according to the degree of the input seaweed color. And a deviation concentration calculator for calculating the deviation concentration by comparing the corrected detection concentration with the set concentration, and a concentration adjusting means for adjusting the concentration of the seaweed preparation based on the deviation concentration.

According to another embodiment of the concentration control device for seaweed preparation according to the present invention, the concentration control means calculates the deviation concentration by comparing the detected concentration with the set concentration, and the seaweed color contained in the deviation concentration. It is provided with a correction calculation means for correcting the components according to the degree of the input seaweed color and a concentration adjusting means for adjusting the concentration of the seaweed preparation based on the corrected deviation concentration.

In addition, the concentration control apparatus for seaweed preparation according to the present invention or another aspect of the present invention adjusts the seaweed preparation, which is almost mixed near a preset concentration. FIG. 3A is an explanatory view of the principle of the method of the present invention. Same figure (A)
In the method for controlling the concentration of nori prepared according to the present invention, in the method for controlling the concentration of nori prepared by mixing the nori raw material and water, the color of the nori of the nori raw material is detected as the nori color. Detected, optically detecting the concentration of the seaweed formulation mixture of the detected seaweed raw material and water as the detected concentration, the detected concentration is corrected by the detected seaweed color,
The concentration of the seaweed preparation is adjusted and controlled to a preset concentration based on the corrected detected concentration.

FIG. 3B is an explanatory view of another principle of the present invention. In the same figure (B), the method for controlling the concentration of the seaweed preparation according to the present invention is the method for controlling the concentration of seaweed preparation prepared by mixing the seaweed raw material and water. Was detected as a detection concentration, and the seaweed preparation liquid whose concentration was controlled based on the detection concentration was made into paper.
The color of the seaweed sheet-shaped by the papermaking is detected as the detected seaweed color, the detected concentration is corrected by the detected seaweed color, and the seaweed is blended to a preset concentration based on the corrected detected concentration. This is to adjust and control the concentration of the liquid.

Furthermore, in the method for controlling the concentration of the seaweed preparation according to the present invention, the concentration of the seaweed preparation is adjusted to a preset concentration substantially before the control of adjusting the concentration of the seaweed preparation, if necessary. It is a thing.

[0027]

In the device of the present invention, the concentration detecting means optically detects the concentration of the seaweed preparation liquid obtained by mixing the seaweed raw material and water, and the seaweed color detecting means detects the color of the seaweed relating to the seaweed preparation liquid. Since the concentration control means adjusts and controls the concentration of the seaweed preparation based on the detected concentration detected, the seaweed color detected, and the set concentration set by the concentration setting means, the concentration of the seaweed preparation to be adjusted is adjusted. Regardless of differences in the characteristics, quality, variety, state, etc. of the nori seaweed, it is possible to perform precise adjustment control to the set concentration that suits the characteristics of various target seaweed raw materials regardless of the type of nori seaweed. It can be adapted to the target quality.

Further, in the apparatus of the present invention, the correction calculating means corrects the seaweed color component contained in the detected density by the detected seaweed color, and the deviation density calculating section calculates the deviation density from the corrected detection density and the set density. However, since the concentration adjusting means adjusts the concentration of the seaweed preparation based on this deviation concentration, it becomes possible to correct the detected concentration itself, which is the reference of the feedback control, in the preceding stage of the control system, and the concentration of the seaweed preparation is adjusted. It can be controlled appropriately.

In the apparatus of the present invention, the seaweed color component included in the deviation density calculated by the deviation density calculating unit is corrected by the detection seaweed color by the correction calculating means, and the density adjusting means is based on the corrected deviation density. Since the concentration of the seaweed preparation is adjusted, it can be corrected in the latter stage of the feedback control, and the concentration of the seaweed preparation can be properly controlled.

In another apparatus of the present invention, the concentration detecting means optically detects the concentration of the seaweed preparation liquid obtained by mixing the seaweed raw material and water, and the degree of the seaweed color relating to the seaweed preparation liquid is set by the seaweed color input means. Then enter this detected concentration,
Since the concentration control means adjusts and controls the concentration of the seaweed preparation based on the input degree of the seaweed color and the set concentration set by the concentration setting means, the concentration of the seaweed preparation to be adjusted is adjusted. Regardless of differences in the characteristics, quality, variety, state, etc. of the raw algae, precise adjustment control can be performed with a simple configuration to the set concentration that matches the target characteristics of various seaweed raw materials, and the final product, paper leaf seaweed Can be adapted to the target quality.

Further, in another apparatus of the present invention, the seaweed color component included in the detected density is corrected by the degree of the seaweed color input by the correction calculating means, and the deviation density is calculated from the corrected detected density and the set density. Since the part calculates the deviation concentration and the concentration adjusting means adjusts the concentration of the seaweed preparation based on this deviation concentration, the detected concentration itself which is the reference of the feedback control can be corrected in the preceding stage of the control system, The concentration of the seaweed preparation can be controlled appropriately.

Further, in another apparatus of the present invention, the seaweed color component included in the deviation density calculated by the deviation density calculating unit is corrected by the degree of the seaweed color input by the correction calculating means, and the corrected deviation density is corrected. Since the concentration adjusting means adjusts the concentration of the seaweed preparation based on the above, it can be corrected in the latter stage of the feedback control, and the concentration of the seaweed preparation can be properly controlled.

In the apparatus of the present invention or another apparatus of the present invention, since the seaweed preparation is mixed to a concentration close to the preset concentration, the concentration of the seaweed preparation can be adjusted with higher accuracy. And can be speeded up. Further, in the method of the present invention, the color of the seaweed of the seaweed raw material is detected optically as the seaweed color, and the concentration of the seaweed preparation liquid obtained by mixing the detected seaweed raw material and water is detected optically as the detected concentration. Then, the detected concentration is corrected with the detected seaweed color,
Since the concentration of the seaweed preparation is adjusted and controlled to a preset concentration based on the corrected detected concentration, the concentration of the seaweed preparation to be adjusted is the characteristics, quality, and variety of the seaweed protozoa. The target set concentration can be controlled regardless of the difference in the state and the like, and the final product, leaf laver, can be adapted to the target quality.

Further, in the method of the present invention, the concentration of the seaweed preparation is optically detected as a detected concentration, and the seaweed preparation whose concentration is controlled based on the detected concentration is made into a paper, and the paper-like shape is obtained by the paper making. The color of the seaweed extracted in No. 1 is detected as the seaweed color, the detected concentration is corrected by the detected seaweed color, and the concentration of the seaweed preparation is adjusted to a preset concentration based on the corrected detected concentration. As a result, the concentration of the seaweed preparation to be adjusted can be controlled to the target set concentration regardless of the difference in the characteristics, quality, variety, state, etc. of the seaweed protozoa, and the final product paper Leaf nori can be adapted to the target quality.

Furthermore, in the method of the present invention, the concentration of the seaweed preparation is adjusted in the preceding stage of the control so that the seaweed preparation is mixed to a concentration close to a preset concentration. The density adjustment can be made more precise and speedy.

[0036]

【Example】

(One embodiment of the present invention) Hereinafter, a seaweed preparation concentration control device and a seaweed preparation concentration control method according to the present invention will be described with reference to FIGS. 4 is an overall block configuration diagram of the apparatus of this embodiment, FIG. 5 is a schematic explanatory view of production from mixing of seaweed to paper making / drying, FIG. 6 is a detailed explanatory view of a paper making unit in the apparatus of this embodiment, and FIG. Shows an operation flowchart of the seaweed preparation concentration control method.

In each of the above figures, the concentration control device for Nori mixed solution according to the present embodiment sets the set concentration of Nori mixed solution 800 which is the target value for the concentration control of Nori mixed solution in which nori raw material and water are mixed. The setting unit 11, the concentration detecting unit 21 that optically detects the current concentration of the mixed seaweed mixed liquid 800 and outputs it as the detected concentration, and the seaweed mixed liquid 800 adjusted and controlled by the apparatus of this embodiment are manufactured. Nori seaweed color detection unit 22 that outputs the color of the paper sheet laver that has been paper-cut in the manufacturing unit 100 as the detected laver color, and correction calculation that corrects the laver color component included in the detected density with the detected laver color. A portion 41, a deviation concentration calculation portion 42 for calculating a deviation concentration by comparison calculation of the set concentration and the corrected detection concentration, and a concentration control drive for adjusting and controlling the concentration of the seaweed preparation 800 based on the deviation concentration. A part 43, which is configured to include a display section 6 for displaying the adjustment direction and the like of the density adjustment based on the deviation concentration.

The correction calculator 41 and the deviation concentration calculator 42
Further, the density control drive section 43 constitutes the density control section 4. The density detector 21 includes an optical signal generation circuit 21C that outputs a drive voltage for generating a predetermined amount of light.
For example, a light emitting portion 21a formed by a light emitting element such as a light emitting diode generated by this drive voltage and a light receiving element such as a phototransistor, a photodiode receiving light from the light emitting portion 21a. And a light receiving unit 21b that A modulation signal is supplied from the optical signal generation circuit (21c) to the light emitting element of the light emitting unit 21a so that the light generated from the light emitting element can be distinguished from the light from the sunlight or the light. Although the concentration detector 21 is provided in the concentration adjusting tank 81 in this embodiment, the light emitting portion 21a and the light receiving portion 21b may be provided in the middle of the outlet pipe 89 led out from the concentration adjusting tank 81. it can. An incandescent light bulb may be used for the light emitting element and Cds may be used for the light receiving element.

The seaweed color detection unit 22 is configured to detect the color of the seaweed 801 that has been made into a paper sheet on the seaweed cage 103 of the paper making unit 100. The detected color detection signal (detected seaweed color) ) Is calibrated in advance with the standard color,
This reference color is compared with the color of the sheet-shaped nori 801 and the color detection signal (detected nori color) is output only when the deviation is within a predetermined limited range. The color detection signal (detected seaweed color) may be calibrated by setting not only the reference color but also the lightness, hue, gloss and the like.

The display section 6 is a lamp L1, L2, L for displaying the density of the seaweed mixed solution in a plurality of stages.
It is also possible to provide 3, L4, L5 and other displays as in the conventional device shown in FIG. Next, the operation of the density control of the present embodiment based on the above configuration will be described. First, as a pretreatment for laver making operation, raw seaweed alga is carried in, and this raw seaweed alga is subjected to mincing processing and water washing to produce a raw seaweed raw material (step 1). The concentration setting unit 11 sets the concentration of the seaweed mixed solution 800 which is considered to correspond to the paper sheet laver to be produced from this nori raw material as the set concentration (step 2).

In this state, the seaweed preparation liquid 800 prepared by mixing the seaweed raw material and water is prepared by the preparation machine 80 (step 3). From this blender 80, seaweed formulation 800
Is supplied and stored in the concentration adjusting tank 81 until the float switch 86 operates (step 4). The concentration detecting unit 21 detects the concentration of the stored seaweed mixed solution 800 in a stirring state by the stirrer 85 (step 5).

Further, the seaweed color detecting unit 22 detects the color of the seaweed 801 sheet-shaped in the paper making unit 100, and the detected seaweed color is output to the correction calculation unit 41. In the present embodiment, the seaweed preparation 800 whose concentration is controlled by the concentration control unit 4 is not fed to the papermaking unit 100 until after a predetermined time, and the seaweed color detection unit 22 makes the paper sheet-shaped seaweed 801. Can not detect the color of.

That is, since the seaweed color detection unit 22 is provided in the papermaking unit 100, the papermaking unit 100 starts and the seaweed cage 1
Before the leaf-shaped seaweed 801 was placed on 03, the seaweed cage 1
The color of No. 03 is detected and the wrong detected seaweed color is output. However, since the seaweed color detection unit 22 is calibrated with the reference color in advance, the output is stopped when the color change greatly deviates from the reference color.

The detected detected concentration is corrected by the correction calculation unit 41.
The correction calculating unit 41 outputs the detected concentration to the deviation concentration calculating unit 42 without correcting the detected concentration until the detected seaweed color is output from the seaweed color detecting unit 22. The output density detected and the set density are calculated by the deviation density calculator 4
2 is input, and the deviation density is calculated by the deviation density calculator 42 (step 6).

On the basis of this deviation density, the density control drive unit 4
No. 3 performs adjustment by feedback control so that the concentration of the seaweed mixed solution 800 in the concentration adjusting tank 81 matches the set concentration (step 7). Here, the density control unit 4 determines whether or not the detected seaweed color is output from the seaweed color detection unit 22 (step 8), and when it is determined that the detected seaweed color is not output, step 9 Transition to ~ 13.

The concentration control drive unit 43 is controlled by driving and controlling the water supply pump 83 or the drainage pump 84 to supply and discharge water to and from the concentration adjusting tank 81 to prepare the seaweed preparation 8
Adjust the concentration of 00. When adjusting this density,
As shown in, the light and shade display lamps L1, L2, L3, L4, L
One of the five lamps is turned on to display the density adjustment state and the adjustment direction by the same display operation as in the conventional case.
Further, the present concentration of the concentration adjusting tank 81 can be confirmed as a detected concentration by digitally displaying it on the current value display 68 and on the set value display 69 respectively.

When the concentration is adjusted by the concentration control unit 4 and it is determined that the concentration is appropriate (step 9), the seaweed preparation 800 is sent from the concentration adjusting tank 81 to the papermaking unit 100 through the outlet pipe 89. (Step 10), this papermaking unit 10
In No. 0, a predetermined amount of the seaweed preparation 800 is introduced into the papermaking basin 101, a predetermined amount of the seaweed preparation 800 is poured from the papermaking basin 101 onto the seaweed cage 103, and the papermaking operation is started (step 11). In this seaweed preparation 800, only water penetrates downward from the seaweed cage 103, and only seaweed is filtered and remains on the seaweed cage 103 to form a substantially uniform paper leaf-shaped seaweed 801 on the seaweed cage 103. To do. Further, of the seaweed preparation 800 poured into the papermaking basin 101, the remaining seaweed preparation 800 other than a predetermined amount is refluxed from the recovery pipe 89a to the concentration adjusting tank 81 and collected.

The seaweed cage 103 is continuously placed at a predetermined interval on the conveyor 102 rotating in the direction of the arrow in the figure,
When the papermaking basin 101 is moved to the lower position, the seaweed preparation 800 is poured. In this way, the sheet-shaped sheet of nori 801 is formed on the plurality of sheets of nori 103 of the conveyor 102 that moves sequentially.

The seaweed 801 formed into a paper sheet on the seaweed cage 103 which is moved by the conveyor 102 is detected by the seaweed color detecting section 22 arranged at the latter stage in the transfer direction (step 12). Since the seaweed 801 formed into a paper sheet is formed on the seaweed cage 103 with a substantially uniform thickness, the seaweed 801 on the seaweed cage 103 sequentially transferred can be detected under a certain unified condition.

The detected detected seaweed color is output to the correction calculation unit 41 as a color detection signal of an electric signal, and the correction calculation unit 41 corrects the seaweed color component included in the detected density based on the detected seaweed color ( Step 13). The corrected detected density is returned to the deviation density calculating unit 42 again and is compared with the set density, and the deviation density is output to the density control driving unit 43 and the display unit 6 (step 6). The density control driving unit 43 can drive and control the water supply pump 83 or the drainage pump 84 based on the deviation density of almost only the density component from which the color component has been removed, and can accurately match the set density (step). 7-14).

(Other Embodiments of the Present Invention) FIG. 8 is a flowchart showing the operation of the seaweed preparation concentration control method according to another embodiment. In the figure, in the method of this embodiment, first, as a premise, the feedback concentration control system is released at the time of startup and the open loop mode is set. In this state, the seaweed raw alga is subjected to mincing treatment and water washing treatment to produce a seaweed raw material (step 101).

The set blending concentration for specifying the mixing ratio of the seaweed raw material and water by the blender 80 is set by the blending setting section (not shown) of the blender 80 (step 102). Further, the blender 80 mixes the seaweed raw material and water at a ratio corresponding to the set blending concentration thus set to generate the seaweed blending liquid 800 (step 102).

The produced seaweed preparation 800 is supplied and stored in the concentration adjusting tank 81 until the float switch 86 operates (step 103). The concentration detector 21 detects the concentration of the stored seaweed mixed solution 800 in a state of being stirred by the stirrer 85 (step 104). The density setting unit 11 sets a set density as a reference of the feedback density control system to the same value as the detected density (step 10).
5).

With the set concentration set, the operator sets the feedback concentration control system in the closed loop mode to start the concentration control feedback operation. Further, the imaging unit 22 images the seaweed 801 that has been sheet-shaped in the papermaking unit 100 and then press dehydrated by the dehydration unit 106, and the seaweed image is output to the density control unit 4. In this embodiment, the seaweed preparation 800 whose concentration has been controlled by the concentration control unit 4 has not been processed for a predetermined period of time until the papermaking unit 100.
Image pickup unit 22 is not fed to the seaweed 8
The color of seaweed cannot be detected by capturing the seaweed image of 01. Since this is the same as the embodiment shown in FIG. 6, the details will be omitted.

Further, the concentration detecting unit 21 controls the concentration of the seaweed preparation liquid 800 stored in the concentration adjusting tank 81 with an agitator 85.
It is detected with stirring (step 106). The detected density detected and the set density are input to the deviation density calculating section 41, and the deviation density calculating section 41 calculates the deviation density (step 107).

Nori prepared liquid 800 according to the value of the deviation concentration
Is determined to be a proper density based on the set density (step 108). If it is determined that the concentration is appropriate, then the seaweed preparation 8 is further added to the concentration adjusting tank 81.
00 is determined (step 10).
9). When it is determined by this determination that the seaweed preparation 800 remains, the seaweed preparation 800 is fed to the papermaking section 100 (step 110).

The seaweed preparation 800 is made by the paper making unit 100 (step 111), and the paper-made dehydrated paper sheet-like seaweed is detected by the seaweed color detecting unit 22 as a seaweed color ( Step 112). It is judged whether or not the detected seaweed color is output (step 11).
3) If it is determined that the output has not been made, steps 106 to 112 are repeated.

If it is determined in step 113 that the detected seaweed color has been output, the correction calculator 41 calculates the correction of the detected density based on the detected seaweed color (step 114). After obtaining the calculated detected concentration, the process returns to step 106 and the detected concentration is further obtained. The deviation density calculating unit 42 calculates the deviation density from the corrected detected density and the set density (step 107). From the value of this deviation density, it is judged whether or not the density is true proper (step 108).

If it is determined that the density is appropriate, the operations of steps 109 to 114 are repeated. When it is determined that the concentration is not appropriate, the concentration control drive unit 43 executes the concentration adjusting operation of the seaweed mixed solution 800 (step 115). Further, in this case, after once adjusting the concentration of the seaweed preparation 800 (step 115)
May be configured to proceed to step 109 without proceeding to step 106, regardless of whether or not the concentration is appropriate.

If it is determined in step 109 that the seaweed preparation does not remain in the concentration adjusting tank 81, the process ends (step 109). FIG. 9 (A),
(B), (C), and (D) show detection mode diagrams of the seaweed color detection unit in the apparatus of the other embodiment of the present invention.

In the figure, the seaweed color detection unit 22 arranges a reference color sample 105 on a pedestal 104 which is laid over the conveyor 102, and the color sample 105 and the sheet-shaped seaweed 801 used as a sample. It is also possible to adopt a configuration in which and are detected within one screen. Further, as shown in FIG. 9C, a color sample 105 serving as a reference is provided on the side of the conveyor 102.
It is also possible to adopt a configuration in which is provided. In these cases, the papermaking unit 10 is included in one screen imaged by the imaging unit 22, respectively.
80 pieces of seaweed to be a sample on the seaweed cage 103 sent from 0
Since each image of 1 and the color sample 105 is included, it is easy to cause a mismatch due to the difference in color brightness of the front-back correlation (see FIG. 9B) or the left-right correlation (see FIG. 9D) in the screen. You will be able to judge.

Further, in the above-mentioned embodiment, the color sample 1 is applied to the whole seaweed 801 on the seaweed cage 103 as a sample.
Although it is configured to be compared with No. 05, it is also possible to have a configuration to be compared with the Nori sample 105 for each region divided into a matrix of Nori 801 shown in FIG. 9D. In this case, a thick (or thin) spot is also partially inspected in any area of the seaweed 801 on the seaweed 103, and based on the inspection result, the non-uniform paper leaf seaweed Manufacturing can be prevented in advance.

In the above embodiment, the seaweed color detecting unit 22 for detecting the color of the seaweed is provided in the subsequent stage of the paper making unit 100, and the color of the paper sheet made from the papermaking unit 100 is sent. Although the seaweed color detection unit 22 is provided in the preceding stage of the blender 80, the seaweed color that has been minced and washed with water may be detected. In this case, the color correction can be performed on the detected density which is the reference of the density feedback control from the start of the apparatus, and the density can be adjusted more accurately from the beginning.

In the above embodiment, the color correction for the detected density is performed before the calculation of the deviation density. However, the deviation density is calculated from the detected density and the set density, and the color correction is performed for the deviation density. It can also be configured to perform. Further, the control drive signal output from the concentration control unit 4 to the water supply pump 83 or the drainage pump 84 may be modified to correspond to the color correction.

(Another Embodiment of the Invention) An embodiment of the present invention will be described below with reference to FIGS. FIG. 10 is an overall block configuration diagram of the seaweed preparation concentration control device according to the present embodiment, and FIG. 11 is a correction voltage output characteristic diagram of the seaweed color input section in the device described in FIG. In each of the drawings, the seaweed preparation concentration control device according to the present embodiment is the same as in FIG.
The density setting unit 11, the density detection unit 21,
The correction calculation unit 41, the deviation concentration calculation unit 42, the concentration control drive unit 43, and the display unit 6 are provided in common, and in addition to this configuration, an operator or a producer or the like distinguishes the color of the seaweed of the seaweed raw material based on the density Is input, and the seaweed color input unit 12 that outputs a preset correction voltage corresponding to the gray level to the correction calculation unit 41 is provided.

The seaweed color input section 12 is a setting dial 120 for the operator or producer to visually judge the seaweed color of the seaweed raw material, set the level of the seaweed color, and input the setting dial 120. The configuration includes a correction voltage output unit 121 that outputs a correction voltage that is associated with a level in advance. The setting dial 120 has five setting levels. For example, the color of nori (first nori) picked at the beginning of the harvest time is black (level 1),
The color of the seaweed that is picked at the end of the harvest season is brown (level 5), and the black (level 1) to brown (level 5) is medium black (level 2) or black brown (level 3). And the set level is determined by classifying it into medium brown (level 4).

Next, the operation of this embodiment based on the above configuration will be described. First, in the same manner as the concentration control operation shown in FIG. 4, the raw seaweed alga that has been carried in is minced and washed to obtain a raw seaweed raw material. An operator visually observes the color of this seaweed raw material and pre-sorts it into black (level 1), medium black (level 2), black brown (level 3), medium brown (level 4), brown (level 5). It is judged whether it corresponds to any of the five steps of). Set the dial to the classification level that is considered to be applicable according to this judgment 12
Set to 0.

By setting the setting dial 120, the correction voltage output section 121 outputs the correction voltage value corresponding to the classification level based on the characteristics shown in FIG. For example, when the level 1 of black seaweed is set and the setting dial 120 is set, the correction voltage E0 [mV] is output and the correction voltages E1 to E4 [mV] corresponding to the set levels 2 to 5 are set. Will be output.

The output correction voltage E0 (or E1,
, E4) are input to the correction calculation unit 41, and the correction calculation unit 41 outputs an output signal of a predetermined voltage value output from the light receiving unit 21b of the density detection unit 21 by photoelectric conversion to the correction voltage E.
Correction is made with 0 (or E1, ..., E4), and the output signal after this correction is output to the deviation concentration calculation unit 42 in the subsequent stage. The processing after the deviation concentration calculation unit 42 executes the concentration adjustment operation as in the seaweed mixture concentration control device described in FIG. In this way, the operator, the producer, etc. visually judge the color of the seaweed and perform color correction. The density can be adjusted.

In the above embodiment, the correction voltage E
Although 0, to, and E4 are all output as predetermined voltage values, it is also possible to use black as the most nori seaweed and adjust the concentration of the nori seaweed solution based on this.
In this case, the correction voltage E0 is output as a value of 0 [mV], or the correction voltage E0 is not output and the correction calculation unit 4
1 can output the output signal from the density detecting unit 21 to the deviation density calculating unit 42 in the subsequent stage as it is without correcting it.

Further, in the above-mentioned embodiment, the black color of the seaweed is the blackest, and the density is adjusted based on this,
The color of any of the subsequently picked seaweed can be used as a reference, or the assumed color can be used as a reference. Further, in each of the above-described embodiments, the color correction for the detected density is performed before the calculation of the deviation density, but the deviation density is calculated from the detected density and the set density, and the seaweed color input unit 12 is used for the deviation density. The correction calculation unit 41 may perform the color correction based on the correction voltage from the.

In the above embodiment, the setting dial 120 of the seaweed color input section 12 is selected in five steps to output the corresponding five kinds of correction voltage values E0, ..., E4. It is also possible to change step 120 steplessly and output a correction voltage value that changes corresponding to this change.

Further, in each of the above-mentioned embodiments, the producer discriminates the color of the raw material of seaweed, but the seaweed color detector 13 independent of this apparatus detects the color of seaweed, and the output is the seaweed of this apparatus. It is also possible to input in comparison with the color level. The seaweed color detector 13 spectroscopically measures the color of the seaweed raw material with a color sensor composed of RGB color elements, compares the spectroscopic measurement result with prestored data of each color from black to brown, and confirms the agreement. It is also possible to make a judgment and detect the seaweed color based on this judgment result.

The seaweed color detector 13 projects light from the light emitting diode onto the seaweed raw material, and whether the color corresponds to any color from black to brown based on the light quantity (brightness) of the reflected light from the seaweed raw material. It can also be measured as an optical analog sensor. Further, in the above embodiment, the seaweed color input unit 12 is configured to output the correction value based on only the color of the seaweed raw material, but the correction value is calculated in consideration of the color of the seaweed raw material and the luster of the seaweed raw material. It can also be configured to output.

[0075]

INDUSTRIAL APPLICABILITY As described above, in the present invention, the concentration detecting means optically detects the concentration of the seaweed preparation liquid obtained by mixing the seaweed raw material and water, and the color of the seaweed relating to the seaweed preparation liquid is detected by the seaweed color detecting means. Is detected, and the concentration control means controls the concentration of the seaweed preparation based on the detected concentration detected, the seaweed color detected, and the set concentration set by the concentration setting means. The concentration of the seaweed preparation can be precisely adjusted and controlled to the target set concentration that suits the characteristics of various types of seaweed raw material, regardless of differences in the characteristics, quality, variety, state, etc. of the seaweed progeny alga, and is the final product. It produces the effect that the paper sheet laver can be adapted to the target quality. Further, in the device of the present invention, the correction computing means corrects the seaweed color component included in the detected concentration by the detected seaweed color,
The deviation concentration calculator calculates the deviation concentration from the corrected detection concentration and the set concentration, and the seaweed adjusting means adjusts the concentration of the seaweed preparation based on this deviation concentration, which is the basis for feedback control. Since the detected concentration itself can be corrected in the preceding stage of the control system, the concentration of the seaweed preparation can be appropriately controlled. Further, in the device of the present invention, the seaweed color component included in the deviation density calculated by the deviation density calculating unit is corrected by the detection seaweed color by the correction calculating means, and the density adjusting means adjusts the seaweed mixing based on the corrected deviation density. Since I tried to adjust the concentration of the liquid,
Since the correction can be performed after the feedback control, the concentration of the seaweed preparation can be appropriately controlled. Further, in another apparatus of the present invention, the concentration detecting means optically detects the concentration of the seaweed preparation liquid obtained by mixing the seaweed raw material and water, and the degree of the seaweed color relating to the seaweed preparation liquid is set by the seaweed color input means. The concentration control means adjusts the concentration of the seaweed preparation based on the detected concentration detected, the input degree of seaweed color and the set concentration set by the concentration setting means. Regardless of differences in the characteristics, quality, varieties, conditions, etc. of the nori seaweed alga, the concentration of the target seaweed mixed solution can be precisely adjusted to a set concentration that suits the target characteristics of various nori raw materials. This is possible with the configuration, and has the effect that the final product, paper leaf laver, can be adapted to the target quality. Further, in another apparatus of the present invention, the seaweed color component included in the detected density is corrected by the correction operation means according to the degree of the seaweed color input, and the deviation density calculation unit deviates from the corrected detected density and the set density. Since the concentration is calculated and the concentration adjusting means adjusts the concentration of the seaweed preparation based on this deviation concentration,
Since the detected concentration itself, which is the reference for the feedback control, can be corrected in the preceding stage of the control system, the concentration of the seaweed preparation can be properly controlled. Also,
In another device of the present invention, the seaweed color component included in the deviation density calculated by the deviation density calculator is corrected by the degree of the seaweed color input by the correction calculator, and the density is adjusted based on the corrected deviation density. Since the means adjusts the concentration of the seaweed preparation, it can be corrected in the latter stage of the feedback control, and the concentration of the seaweed preparation can be appropriately controlled. Further, in the present invention or the apparatus of the present invention, since the seaweed adjusting liquid is adjusted to be almost mixed near the preset set concentration, the concentration adjustment of the seaweed prepared liquid can be further highly accurate and speeded up. It has the effect of Further, in the method of the present invention, the color of the seaweed of the seaweed raw material is detected as the detected seaweed color, and the concentration of the seaweed mixed solution obtained by mixing the detected seaweed raw material and water is detected optically as the detection concentration, and Since the detected concentration was corrected with the detected seaweed color and the concentration of the seaweed preparation was adjusted and controlled to a preset concentration based on the corrected detection concentration, the concentration of the seaweed preparation to be adjusted was adjusted. Can be controlled to a target set concentration regardless of differences in characteristics, quality, variety, state, etc. of Nori seaweed, and the effect is that the final product, paper leaf nori, can be adapted to the target quality. . Further, in the method of the present invention, the concentration of the seaweed preparation is optically detected as the detected concentration, and the seaweed preparation whose concentration is controlled based on the detected concentration is made into paper, and the paper is made into a paper sheet by the paper making. The color of the seaweed is detected as the detected seaweed color, the detected concentration is corrected by the detected seaweed color, and the concentration of the seaweed preparation is adjusted and controlled to a preset concentration based on the corrected detected concentration. Therefore, it is possible to control the concentration of the seaweed adjusting solution to be adjusted to the target set concentration regardless of the difference in the characteristics, quality, variety, condition, etc. of the seaweed protozoa, and the final product paper leaf nori It has the effect that it can be adapted to the target quality. Furthermore, in the method of the present invention, the concentration of the seaweed preparation is adjusted by adjusting the concentration of the seaweed preparation, which is almost mixed to a preset concentration, in the preceding stage of the adjustment control. This has the effect of achieving high accuracy and speed.

[Brief description of drawings]

FIG. 1 is an explanatory view of the principle of a seaweed preparation concentration control device according to the present invention.

FIG. 2 is a principle explanatory diagram of another concentration control device for seaweed preparation according to the present invention.

FIG. 3 is a principle explanatory diagram of another method for controlling the concentration of seaweed preparation according to the present invention.

FIG. 4 is an overall block configuration diagram of a seaweed preparation concentration control device according to an embodiment of the present invention.

FIG. 5 is a schematic explanatory view of production from mixing of seaweed to paper making / drying in the apparatus of the embodiment shown in FIG.

FIG. 6 is a detailed configuration diagram of a papermaking unit and a seaweed color detection unit in the apparatus of the embodiment shown in FIG.

FIG. 7 is an operation flowchart of the seaweed preparation concentration control method according to the embodiment shown in FIG. 3;

FIG. 8 is an operation flowchart of a seaweed preparation concentration control method according to another embodiment of the present invention.

FIG. 9 is a detection mode diagram of a seaweed color detection unit in another embodiment of the present invention.

FIG. 10 is an overall block configuration diagram of a seaweed preparation concentration control device according to another embodiment of the present invention.

11 is a correction voltage characteristic diagram of a seaweed color input section in the apparatus of the embodiment shown in FIG.

FIG. 12 is an overall block configuration diagram of a conventional seaweed preparation concentration control device.

FIG. 13 is a front view of a control panel in the conventional device.

[Explanation of symbols]

 4 density control section (density control means) 6 display section (display means) 8 density adjustment section 11 density setting section (density setting means) 12 nori color input section 21 density detection section (density detection section) 22 nori color detection section (nori color) Color detection means) 41 Correction calculation unit 42 Deviation concentration calculation unit 43 Concentration control drive unit 83 Water supply pump 84 Drainage pump 100 Papermaking unit 111 Set value generator 120 Setting dial 121 Correction voltage output unit 200 Drying unit 800 Seaweed preparation

Claims (10)

[Claims] 1. A concentration setting means for controlling a concentration of a nori mixed solution, which is a mixture of a nori raw material and water, for setting a set concentration of the nori mixed solution as a control target value, A concentration detecting means for optically detecting the current concentration of the mixed seaweed mixed solution and outputting it as a detected concentration, a seaweed color detecting means for detecting the color of the seaweed and outputting it as a detected seaweed color, the set concentration, A concentration control device for seaweed preparation, comprising concentration control means for adjusting and controlling the concentration of the seaweed preparation based on the detected concentration and the color of the detected seaweed. 2. The seaweed mixture concentration control device according to claim 1, wherein the concentration control means corrects the seaweed color component contained in the detected concentration by the detected seaweed color, and the corrected detection. Concentration control device for nori seaweed preparation, comprising: a deviation concentration calculator for calculating the deviation concentration by comparison between the concentration and the set concentration; and a concentration adjusting means for adjusting the concentration of the seaweed preparation liquid based on the deviation concentration. . 3. The seaweed mixed solution concentration control device according to claim 1, wherein the concentration control means is included in the deviation concentration calculation unit for calculating the deviation concentration by a comparison calculation between the detected concentration and the set concentration. A seaweed preparation concentration control device, comprising: a correction calculation means for correcting the seaweed color component based on the detected seaweed color; and a concentration adjusting means for adjusting the concentration of the seaweed preparation based on the corrected deviation concentration. 4. A concentration control device for controlling the concentration of a seaweed mixture prepared by mixing a seaweed raw material and water, the concentration setting means for setting a set concentration of the seaweed mixture to be a control target value, Concentration detection means for optically detecting the current concentration of the mixed seaweed preparation and outputting it as the detected concentration, seaweed color input means for setting and inputting the degree of shade of the seaweed, and the set concentration, A concentration control device for seaweed preparation, comprising: concentration control means for adjusting and controlling the concentration of the seaweed preparation on the basis of the detected concentration and the degree of the input seaweed color. 5. The seaweed preparation concentration control device according to claim 4, wherein the concentration control means corrects the seaweed color component contained in the detected concentration according to the degree of the input seaweed color, Nori seaweed preparation comprising: a deviation concentration calculation unit for calculating a deviation concentration by comparison calculation between the corrected detected concentration and a set concentration; and a concentration adjusting unit for adjusting the concentration of the seaweed preparation liquid based on the deviation concentration. Liquid concentration control device. 6. The seaweed mixed solution concentration control device according to claim 4, wherein the concentration control means is included in the deviation concentration calculation unit for calculating the deviation concentration by comparing the detection concentration with the set concentration. Nori seaweed solution concentration characterized by comprising a correction calculation means for correcting the seaweed color component according to the degree of the input seaweed color and a concentration adjusting means for adjusting the concentration of the seaweed seaweed solution based on the corrected deviation concentration Control device. 7. The seaweed preparation concentration control device according to any one of claims 1 to 6, wherein the seaweed preparation is prepared by mixing a mixture of the seaweed preparations near a preset concentration. Concentration control device for seaweed preparation. 8. A method for controlling the concentration of a seaweed mixed solution, which controls the concentration of a seaweed mixed solution obtained by mixing a seaweed raw material and water, wherein the color of the seaweed of the seaweed raw material is detected as a detected seaweed color, and the seaweed raw material and the water are mixed. The concentration of the seaweed mixed solution mixed with is detected optically as the detected concentration, and the detected detected concentration is corrected by the detected seaweed color, and the seaweed is prepared to a preset concentration based on the corrected detected concentration. A method for controlling the concentration of a seaweed preparation, which comprises controlling the solution. 9. A method for controlling the concentration of a nori prepared solution, which comprises controlling the concentration of a nori prepared solution prepared by mixing a nori raw material and water, wherein the concentration of the nori prepared solution is optically detected as a detected concentration, and based on the detected concentration. The concentration of the dried seaweed is controlled by papermaking, and the color of the seaweed that is made into a paper sheet by the papermaking is detected as the detected seaweed color, and the detected concentration is corrected by the detected seaweed color, and the corrected detection is performed. A method for controlling the concentration of seaweed preparation, comprising controlling the seaweed preparation at a preset concentration based on the concentration. 10. The seaweed concentration control method according to claim 8 or 9, characterized in that the seaweed preparation liquid is adjusted to a mixture that is close to a preset set concentration and is approximately mixed. Method.