JPS635057B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method used in processing raw seaweed, and belongs to the industrial field related to processing raw seaweed.

(Prior art) Concerning the concentration of seaweed, concentration adjustment methods are known (Japanese Patent Publication No. 60-3819);
It is a method of adding or extracting water to adjust the mixing ratio of seaweed and water, and has nothing to do with the degree of contamination. At least no device is known that measures the degree of cleaning during cleaning.

(Problems to be solved by the invention) Conventionally known methods of washing seaweed include adjusting the washing time and determining the degree of contamination from the drainage condition, but since there are no quantitative standards, the method relies solely on experience. There was a risk that the quality of the product would deteriorate due to excessive washing, or that foreign matter might be mixed into the product due to insufficient washing. Also, if the salt content was low (almost all gone), the product would lose its luster, and if the salt content was too high, there would be problems with storage stability.

(Means for Solving the Problems) However, the present invention measures the salt content of the washing water in the raw seaweed washing tank, or measures the pollution degree of washing wastewater, or measures both the salt content percentage and the pollution degree. By measuring, you can measure the degree of washing of raw seaweed, and by keeping it at an appropriate degree of washing, you can ensure that the washing is not too much or too little.
A homogeneous product was obtained. Originally, fresh seaweed could be washed with fresh water to remove salt adhering to the outer surface of the seaweed, but it was thought that the salt water inside the cells could not be removed. So, if you wash it alternately with fresh water and salt water,
Salt and foreign matter can be effectively removed.

(Action of the Invention) According to the present invention, changes in salt content during washing can be measured. It is also possible to measure the amount of dirt in the washing wastewater. Therefore, the degree of cleaning can be determined from the measured value.

(Example) Next, embodiments of this invention will be described.

Fresh seaweed cut by a cutting machine 2 is put into the washing tank 1, and the motor 3 is started while supplying water from the fresh water supply pipe 10 as shown by the arrow 11. Inside the washing tank 1, two stirring shafts 4, 4a are rotatably installed vertically at a predetermined interval, and the rotation of the rotating shaft of the motor 3 is controlled by the stirring shaft 4 through a motion device such as a gear or a belt. , 4a in the same direction (arrows 5 and 6 in FIG. 1). Therefore, the mixture of raw seaweed and water in the washing tank 1 is uniformly stirred by the stirring blades 7, 7a protruding from the stirring shafts 4, 4a, and the waste water (containing salt) is collected from punched metal or wire mesh. The water passes through a screen 8, enters a measuring tank 9, has its salinity measured by a salinity meter 16, and is then drained from a drain pipe 13 as shown by an arrow 17.

A contamination measuring device 12 is installed in the drain pipe 13, and the numerical value can be displayed digitally, for example.

The pollution measuring device 12 has a built-in light source and a light receiving element, for example, and measures changes in the amount of light transmitted through the wastewater to indicate the degree of pollution. For example, the amount of transmitted light in the case of fresh water is measured and memorized in advance, and then the amount of transmitted light of drainage water is compared with the above-mentioned stored value, and when the difference between the measured value and the stored value reaches the set value, the drain valve ( (not shown) and close the on-off valve 14 of the raw seaweed transfer pipe 15.
If the control circuit is configured to open the door, it is possible to fully automate batch washing. In the above embodiment, when the fresh water supply pipe 10 is connected to the discharge side of the water supply pump, the supply and cutoff of the water supply is controlled by starting or stopping the water supply pump or by a solenoid valve provided at the discharge side of the water supply pump. However, when the fresh water supply pipe 10 is connected to a tap water supply pipe, a solenoid valve is inserted at an appropriate position in the fresh water supply pipe to control the supply and cutoff of the water supply.

In the above example, both the salinity concentration and the turbidity were measured, but if the properties of the collected raw seaweed are stable, even if only one of the salinity concentration or the turbidity is measured, the same result can be obtained. You can check the cleaning status.

In other words, under normal conditions, when fresh seaweed is washed with fresh water, the salt adhering to the outside of raw seaweed is quickly washed away, resulting in a sharp drop in the salt concentration, but when the degree of contamination is high, washing must take a relatively long time. Since it will not become clean if it is washed, it will require more washing time than usual. Therefore, it is not possible to determine whether the cleaning condition is good or bad only by measuring the salt concentration.

However, in the case of fresh seaweed that is not highly contaminated, the salinity concentration and the degree of cleaning are proportional, so it is possible to predict whether the degree of cleaning is good or bad by measuring the salt concentration. If the washing water contains a small amount of salt (for example, 0.3% to 0.5%), the salt contained in the raw seaweed leaves will also be extracted, so even though the salt concentration is relatively high, the washing efficiency is good. Please be careful as there may be cases.

(Effects of the Invention) That is, according to the present invention, since one or both of the salt concentration and the degree of pollution are measured, the degree of cleaning can be kept constant. Therefore, if the cleaning degree is set to a constant value, it is possible to fully automate the batch-type cleaning apparatus. In addition, since both the salinity and the degree of pollution of the washing water are measured, it is possible to maintain the washing degree at a constant level even if the growth conditions or growth environment of raw seaweed change.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of a washing tank used for carrying out the present invention, and FIG. 2 is a longitudinal sectional front view thereof. 1... Washing tank, 4, 4a... Stirring shaft, 7, 7a
... Stirring blade, 9 ... Measuring tank, 10 ... Water supply pipe,
12... Pollution meter.

Claims (1)

[Scope of Claims] 1. When measuring both the salt content and the degree of pollution of the washing water in the raw seaweed washing tank, the salt content of the washing water is measured in a measuring tank that communicates with the washing tank via a mesh plate,
A method for measuring the degree of washing of raw seaweed, characterized in that the degree of pollution is measured in a measuring tank or a drain pipe. 2. A method for measuring the degree of washing of raw seaweed according to claim 1, wherein the degree of contamination is measured by measuring the amount of transmitted light.