JP2993385B2 - Salt concentration controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for adjusting the salt concentration of stored water and / or washing water of laver progenitor algae.
More specifically, the present invention relates to a salt concentration adjusting device for keeping the salt concentration of stored water in a storage tank for temporarily storing plucked nori original algae or washing water in a washing tank for washing the nori original algae at an appropriate concentration.

[0002]

2. Description of the Related Art Harvested seaweed algae are temporarily stored in storage water in a storage tank and / or a washing tank to keep the activity of the seaweed algae before entering the manufacturing process. Washed with wash water to remove. However, when seaweed progenitors are sequentially added, the salt concentration of the storage water in the storage tank and the washing water in the washing tank gradually becomes higher than the initial salt concentration. This is thought to be because the salt contained in the cells of the nori-producing algae dissolves into the storage water or the washing water, and if left as it is, the finished quality of the nori will be reduced.

[0003] Therefore, it is necessary to dilute with fresh water until the concentration becomes appropriate, but if the salt concentration is too low, the activity of the laver is lost during the storage and washing period, and the quality of the laver also deteriorates. Therefore, it is necessary to control the salt concentration of the storage water in the storage tank and the washing water in the washing tank within a specified appropriate range. The conventional salt concentration control device immerses the electrodes of the salt concentration sensor in the storage water in the storage tank and the washing water in the washing tank, and measures the change in the electrical resistance of the storage water or washing water between the electrodes, and as a result, In general, the specific gravity and the salt concentration are determined from the above, and the salt concentration is adjusted by replenishing fresh water or salt water such as seawater or artificial seawater based on the measured values.

[0004]

However, the above-mentioned conventional apparatus has the following problems. That is,
The electrodes provided on the sensor of the conventional salt concentration adjusting device have been used for a long time while being buried in storage water or washing water. For this reason, dust and impurities mixed in the nori original algae adhere to the surface of the electrode, rust is generated, and the electrode deteriorates, so that accurate measurement results cannot be obtained gradually. It was difficult to control the salinity of water within a specified appropriate range.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems and to provide a salt concentration adjusting device for adjusting the salt concentration of stored water in a storage tank of laver original algae and / or washing water in a washing tank. Specified salt concentration to prevent dust and impurities from adhering to the electrode of the concentration sensor and to prevent rust from being generated, to prevent deterioration of the electrode and to prevent measurement accuracy from deteriorating even during long-term use. Be able to manage within the range. In addition, this preserves the activity of the nori-produced algae, improves the yield of finished nori, the quality of the product, the color and luster of the nori, and detects moisture during storage of the nori and salt analysis during secondary processing. The purpose is to prevent such troubles.

[0006]

Means of the present invention taken to achieve the above object are as follows. The first means is a salt concentration adjusting device for keeping the salt concentration of stored water and / or washing water of laver original algae within an appropriate range, and this device is a storage tank or / and washing tank. A fresh water supply means for supplying fresh water to the storage tank and / or the washing tank; a salt concentration sensor for detecting a salt concentration in a flow path of the storage water and / or the washing water; an appropriate salt concentration range and a salt concentration; Compare the salinity measured by the sensor,
When the measured value is higher than the appropriate salt concentration range, there is provided a salt concentration control means for outputting a signal for driving the fresh water supply means, and a display means for displaying a measured value of the salt concentration of the stored water or / and the washing water, The salt concentration sensor includes an electrode and an electrode driving unit that exposes the electrode in storage water or wash water, or separates the electrode from the storage water or wash water,
It is a salt concentration adjusting device.

In the second means, the salt water supply means for supplying the salt water to the storage tank and / or the washing tank is compared with the appropriate salt concentration range and the salt concentration measured value by the salt concentration sensor, and the measured value is compared. Is lower than the appropriate salt concentration range,
A salt concentration adjusting apparatus according to a first means, comprising: a salt concentration control means for outputting a signal for driving the salt water supply means.

[0008] In the third means, the salt concentration sensor is a salt concentration adjusting device according to the first or second means, comprising a washing and washing means for washing the electrodes.

In the fourth means, a temperature sensor is provided in the vicinity of the electrode of the salt concentration sensor, and this temperature sensor is exposed together with the electrode in storage water or washing water by the electrode driving means, or is exposed from the storage water or washing water. The salt concentration adjusting device according to the first to third means, which is configured to be separated.

According to a fifth aspect, there is provided a salt concentration adjusting apparatus according to the first to fourth means, further comprising protection means for protecting an electrode and / or a temperature sensor separated from stored water or washing water. is there.

In the sixth means, the protection means is a salt concentration adjusting apparatus according to the fifth means, wherein the protection means is formed of a flexible material and has an insertion hole through which an electrode and / or a temperature sensor is inserted.

According to a seventh aspect, the salt concentration sensor is a salt concentration adjusting device according to the first to sixth means, further comprising an electrode activating means for activating the electrode surface.

According to an eighth aspect, the salt concentration sensor is the salt concentration adjusting device according to the first to seventh means, which is housed in a substantially watertight housing case.

The ninth means is the salt concentration adjusting apparatus according to the eighth means, wherein the storage case moves up and down in accordance with a change in the level of the storage water or the washing water. .

In the tenth means, a hollow portion is provided in the housing case between the protection means for protecting the electrode and / or the temperature sensor and the housing case wall, and the housing case wall has a hollow portion. Has an insertion portion through which an electrode and / or a temperature sensor can enter and exit in a substantially watertight state.
Or a salt concentration adjusting device according to a ninth means.

According to an eleventh means, in the housing case,
A salt concentration adjusting device according to eighth to tenth means, wherein the salt concentration control means and the display means are provided integrally.

[0017]

The seaweed progenitor algae is put into a storage tank or / and a washing tank, and fresh water or salt water is added to make the same conditions as in the seaweed growing stage, and stored under stirring in the storage tank or / and the washing tank. The salt concentration of the stored water in the storage tank or the washing water in the washing tank is detected and measured by a salt concentration sensor,
The data is input to the salt concentration control means.

The display means displays the salt concentration of the stored water or the wash water. An appropriate range of the salt concentration is set in advance, and when the detected concentration is higher than the appropriate range, fresh water is supplied to the storage tank and / or the washing tank by the fresh water supply means to adjust the salt concentration. In addition, as described above, the salt concentration in the storage tank tends to increase due to the dissolution of the salt from the cells of the seaweed algae, so usually only fresh water supply means is sufficient. If the salt concentration falls below an appropriate range for some reason, the salt water is supplied to the storage tank or /
Further, since the salt concentration can be adjusted by supplying to the washing tank, finer and quicker adjustment can be performed. If the salt concentration falls within an appropriate range, neither the fresh water supply means nor the salt water supply means is operated. Hereinafter, by repeating this, the salt concentration of the stored water or the washing water in the storage tank and / or the washing tank is always maintained in an appropriate concentration range.

The electrodes of the salt concentration sensor are exposed to, or separated from, the stored water or the washing water by the electrode driving means. As a result, when the salt concentration sensor is not used, such as when the apparatus is stopped or during off-season, it is possible to keep the stored water or washing water out of contact, and the surface of the electrode, such as dust and impurities mixed in the stored water or washing water, can be prevented. Can be reduced or prevented, that is, fouling or rusting, that is, fouling can be reduced.
Therefore, the electrode is hardly deteriorated, an accurate measurement result is always obtained, and the salt concentration of the storage water or the washing water can be controlled within a specified appropriate range.

In the case where the salt concentration sensor is provided with a washing and washing means for washing the electrode, for example, when the electrode is slightly stained, the electrode is washed with water and the electrode driving means is not operated. There are more options for reducing or preventing electrode fouling, such as using the electrode the next time. In addition, when the electrode is separated from the storage water or the washing water, it is possible to remove a certain degree of contamination of the electrode in advance. Therefore, it is possible to more efficiently reduce or prevent electrode fouling.

A temperature sensor is provided in the vicinity of the electrode of the salt concentration sensor, and the temperature sensor is exposed together with the electrode in storage water or washing water by an electrode driving means, or is separated from the storage water or washing water. In addition, dust and impurities mixed in the storage water or the wash water hardly adhere to the temperature sensor, and the contamination can be reduced or prevented, so that the temperature can be measured accurately.

In a device provided with protection means for protecting an electrode and / or a temperature sensor separated from stored water or washing water, damage to the electrode and the temperature sensor in the event of an impact or other external force can be prevented. .

If the protection means is made of a flexible material such as rubber or synthetic resin, and has a structure having an insertion hole through which an electrode and / or a temperature sensor is inserted, it is necessary to protect the electrode by closely contacting the inside of the insertion hole. Therefore, it is possible to more effectively prevent the electrodes and the temperature sensor from being damaged when receiving an impact or other external force. Also, even if left for a long period of time, the surfaces of the electrodes and the temperature sensor can be protected from rust and the like.

In the case where the salt concentration sensor is provided with an electrode activating means such as polishing for activating the electrode surface, the function of the electrode is maintained since the surface of the electrode is always activated. Accurate measurement results can be obtained.

In the case where the salinity sensor is housed in a substantially watertight housing case, the salinity sensor can be protected from being wet, and the malfunction of the salinity sensor caused by the water can be prevented. Occurrence can be prevented.

In the case where the storage case moves up and down in accordance with the fluctuation of the water level of the stored water or the washing water, the salt concentration sensor is used to deposit impurities except when the water level is low. It can be located above the bottom of the tank, which is easy to do. Therefore, electrode fouling can be reduced or prevented.

A hollow portion is provided between the protection means in the storage case and the storage case wall, and an electrode or / and a temperature sensor are inserted into the storage case wall so as to be able to enter and exit in a substantially watertight state. In the case where the portion is provided, separation between the electrode and the stored water or the washing water is more reliably performed, so that the contamination can be reduced or prevented more effectively.

When the storage case is provided with the salt concentration control means and the display means integrally, the apparatus can be made compact as a whole. Therefore, it does not take up much space when installed and is easy to handle.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is an explanatory view showing a first embodiment of a salt concentration sensor in a salt concentration adjusting device according to the present invention, FIG. 2 is a block diagram showing one embodiment of a salt concentration adjusting device according to the present invention, and FIG. 5 is a flow sheet showing a process for producing a raw material for laver making using the apparatus for adjusting the concentration of salt according to the present invention.

Referring to FIG. Reference numeral A denotes a salt concentration adjusting device having a storage tank 2. The storage tank 2 is provided with a stirrer 2 a for stirring the stored nori original algae and a salt concentration sensor 4 for detecting the salt concentration of the stored water 3. Although the salt concentration sensor 4 is provided in the storage tank 2 in the present embodiment, for example, a cleaning tank (not shown) for more surely washing the laver original algae 1 in a process before the storage tank 2 is provided. Separately provided, a salt concentration sensor 4
Can also be provided. The storage tank 2 stores the nori original algae 1 (see FIG. 3) together with the storage water. Fresh water from the fresh water tank 6 and salt water from the salt water tank 7 are supplied to the storage tank 2 by pumps P1 and P2, respectively.

Here, the structure of the salt concentration sensor 4 will be described with reference to FIG. The housing case 41 is mounted in the storage tank 2 by a mounting bracket 49. Storage case 4
Reference numeral 1 denotes a cylindrical shape whose top and bottom are shielded, and a salt concentration sensor 4 is provided inside. The salt concentration sensor 4 has an electric cylinder 46 as an electrode driving means. The connecting bar 45 is attached to the rod head of the electric cylinder 46. The connecting bar 45 has three slide rods 43,
43, 43 are attached hanging downward.

Electrodes 44, 44 for detecting the salt concentration are provided near two lower portions of each slide rod 43. The electrodes 44, 44 are cylindrical and embedded in the slide rods 43, 43 so that the surfaces are flush. Further, a temperature sensor 47 for controlling the water temperature is provided near the bottom of the other one. Each of the slide rods 43 is a hollow body, and a lead L connected to the electrode 44 and the temperature sensor 47 is introduced therein.

At the bottom of the housing case 41, seal members 42, which are protection means, are attached at three places through the inside and outside. Each seal member 42 is attached in a watertight manner. The seal member 42 has flexibility and is formed in a flat cylindrical shape with rubber having high adhesion (silicon rubber, urethane rubber, or the like). Each of the slide rods 43 is attached to the seal member 42.
Are provided respectively. Each of the slide rods 43 is inserted so as to be able to slide in a substantially watertight state while being slightly tightly attached to each of the insertion holes 420. Thereby, watertightness is secured.

When the electric cylinder 46 is operated and each slide rod 43 is raised, the electrodes 44 and 44 and the temperature sensor 47 provided on each slide rod 43 are provided.
Are accommodated in the respective insertion holes 420, and each slide rod 4
The dimensions of each part are set so that the electrodes 44, 44 and the temperature sensor 47 are exposed to the outside through the respective insertion holes 420 when the number 3 is lowered.

The salt concentration adjusting device A has a salt concentration control section 5 which is a salt concentration control means. The salt concentration control unit 5 includes a power supply circuit 21, an oscillation modulation circuit 22, a drive circuit 20 constituting an electrode drive unit, a salt concentration adjustment circuit 23, a first drive circuit 27 for driving a pump P1, and a second drive circuit for driving a pump P2. 2 drive circuit 28, display circuit 29, indicator light 3
0, an alarm circuit 31, and an alarm buzzer 32. The salt concentration adjusting circuit 23 includes a rectifier 24 and an amplifier circuit 2.
5. It has a signal discriminator 26.

The first drive circuit 27 and the second drive circuit 28
, Pumps P1 and P2, which are means for supplying fresh water and salt water, are driven, and fresh water and salt water are supplied to the storage tank 2 from the fresh water tank 6 and the salt water tank 7, respectively. Valves V1 and V2 are provided in the fresh water and salt water supply paths as means for adjusting the respective supply amounts per hour. The power supply circuit 21 supplies AC power to each circuit of the control device, and also supplies DC power and constant voltage power via a rectifier circuit and a constant voltage circuit.

The power supply circuit 21 receives a commercial frequency alternating current, rectifies it and temporarily converts it to a direct current, and incorporates a constant voltage circuit in this process.
When a high frequency is generated in the subsequent stage, a constant voltage alternating current is obtained, and when the voltage fluctuation on the power supply side is within + 20%,
There is no effect on the secondary side so that concentration measurement can be performed stably.

The oscillation modulation circuit 22 receives a DC constant voltage,
A predetermined high-frequency output is obtained by an oscillation circuit such as an astable multivibrator. In this case, the frequency is fixed or variable. Further, the reference level is adjusted by a reference level adjustment circuit including a resistor, a capacitor, and the like, so that a positive and negative balanced high frequency output is obtained. This high frequency output is applied to the salt concentration sensor 4 to operate. The output of the salt concentration sensor 4 is input to the salt concentration adjusting circuit 23.

The signal input to the concentration adjusting circuit 23 is processed by the rectifier 24 and the amplifier circuit 25, and is processed by the signal discriminator 26.
Is compared with a preset density reference value to determine whether or not the density is within the reference value range. In the present embodiment, the five-stage discrimination signals S1, S2, S3, S4,
S5 is issued, and if it is within the reference value range, S3 is "good"
On the “dark” side of the reference value range, depending on the degree of the density difference, S
2 is “dark” and S1 is “dark”. On the “thin” side, S4 is “thin” and S5 is “thin” according to the degree of the density difference.

These signals are supplied to a display circuit 29 which constitutes a display means, and the signals S1 to S1 are discriminated.
In response to S5, one of the indicator lamps L1 to L5 is turned on, and the state of the detected salt concentration is displayed. That is, L1 “excessive”, L2 “dark”, L3 “good”, L4
"Thin" and L5 "Thin" are displayed. When either the "overweight" signal S1 or the "overweight" signal S5 is issued, the alarm circuit 31 is activated, and the alarm buzzer 32 sounds to confirm that the salt concentration is "overweight" or "overweight". Inform.

The "dark" signal S1 and the "dark" signal S2 activate the first drive circuit 27, and the "light" signal S4 and the "light" signal S5 activate the second drive circuit 28. The first drive circuit 27 receives and outputs the “rich” signal S2 and the “rich” signal S1, and drives the pump P1 to supply fresh water from the fresh water tank 6 to the storage tank 2. In this case, the supply amount per operation is increased by increasing the drive time of the pump P1 in the case of the "rich" S1 compared to the "rich" S2.

The second drive circuit 28 receives and outputs the "thin" signal S4 and the "thin" signal S5, and drives the pump P2 to supply salt water from the salt water tank 7 to the storage tank 2. In this case, in the case of "thin" S5, the supply amount per operation is increased by, for example, lengthening the drive time of the pump P2 as compared with the "thin" S5. Note that, with the “good” signal S3, the drive circuits 27 and 28 do not operate, and the pumps P1 and P2 are not driven.

As described above, the salt concentration in the storage tank 2 tends to increase due to the dissolution of salt from the cells of the norigenus algae 1. Therefore, only when the concentration is high, the salt concentration is detected and adjusted by supplying fresh water. Alternatively, detection when the concentration is low or supply of salt water may not be performed.

(Operation) The operation of the present embodiment will be described with reference to FIGS. Nori original algae 1 is put into storage tank 2,
Fresh water or salt water is added to make the same conditions as in the laver growth stage, and this is stored in the storage tank 2 with stirring. The drive circuit 20 is operated, and the salt concentration sensor 4 in the storage tank 2 is operated.
Is driven, and each slide rod 4 is driven.
3 slides downward, and the electrodes 44, 44 and the temperature sensor 47 are exposed in the storage water 3.

The salinity concentration of the storage water 3 is detected by the salinity concentration sensor 4 and inputted to the salinity concentration adjusting circuit 23. The salt concentration is displayed by turning on any of L1 to L5 of the indicator lamps 30 based on a preset appropriate concentration range. When the detected concentration is higher than the appropriate range of the salt concentration, the fresh water supply pump P1 is operated to supply fresh water from the fresh water tank 6 to the storage tank 2 for a certain time. When the detected concentration is lower than the appropriate range, the salt water supply pump P2 is operated to supply the salt water from the salt water tank 7 to the storage tank 2 for a certain period of time. Note that the supply time of fresh water or salt water can also correspond to the concentration difference between the appropriate concentration range and the detected concentration. That is, fresh water is supplied for a longer time as the detected concentration is higher and the concentration difference from the appropriate concentration range is larger, and salt water is supplied for a longer time as the detected concentration is lower and the concentration difference from the appropriate concentration range is larger. it can.

When the concentration of the storage water 3 falls within the proper range, the pump P1 or P2 is stopped. If the concentration is not within the appropriate concentration range, the pump P1 or P2 is operated. Hereinafter, by repeating this, the salt concentration of the storage water 3 is adjusted so as to be within an appropriate range. When the apparatus is at rest or during off-season, the electric cylinder 46 is driven to slide each slide rod 43 upward to accommodate the electrodes 44, 44 and the temperature sensor 47 inside the insertion hole 420 of the seal member 42. Thereby, the electrodes 44, 4
Since the temperature sensor 4 and the temperature sensor 47 are separated from the storage water 3 and do not touch the air, dust and impurities are prevented from adhering and rust is hardly generated, so that contamination can be reduced or prevented. The electrodes 44 and 44 and the temperature sensor 47 are
2 and is not easily damaged by a slight impact.

The seaweed progenitor algae 1 in the storage tank 2 is minced by a mincing machine 8 and washed with a water washing device 9 to remove salt and contaminants. Mix with water to make a raw material for laver. This laver material is adjusted to an appropriate laver concentration in the concentration adjusting tank 11 and supplied to the laver machine 12 for papermaking. For the adjustment of the laver concentration, a laver concentration sensor 13 is provided in the adjustment tank 11 to detect the laver concentration and input the same to the laver concentration adjusting device 14. In the concentration adjusting device 14, the water supply pump P3 and the drainage pump P4 are appropriately driven and adjusted so that the laver concentration falls within a predetermined appropriate concentration range.

FIG. 4 is an explanatory view showing a second embodiment of the salt concentration sensor in the salt concentration adjusting device according to the present invention. 4 to 7 described below,
The same or equivalent parts as those of the salt concentration sensor 4 shown in FIG. 1 are denoted by the same reference numerals. In the present embodiment, a cleaning nozzle 401 as a water cleaning means is provided in a vertical direction on the side of the storage case 41. Cleaning nozzle 401
A water outlet 402 is provided in the lower part of the table. The water outlet 402 faces the direction in which the exposed electrodes 44, 44 can be cleaned. A water pipe 403 is connected to the upper part of the washing nozzle 401.

According to this embodiment, if necessary, the electrode 4
4, 44 and the temperature sensor 47 can be cleaned.
Thus, for example, if the electrodes 44, 44 are slightly contaminated, the electrodes 44, 44 can be washed with water and the electrodes 44, 44 can be used as they are next time without moving the slide rods 43, 43, 43. The electrodes 44, 4
The options for reducing or preventing the contamination of item 4 are expanded.
Further, when the electrodes 44, 44 are separated from the storage water, the electrodes 44, 44 can be cleaned to some extent in advance. Therefore, more efficient and efficient electrodes 44, 44
Can reduce or prevent pollution

FIG. 5 is an explanatory view showing a third embodiment of the salt concentration sensor in the salt concentration adjusting apparatus according to the present invention. In the present embodiment, the salt concentration sensor 4 moves up and down in accordance with the fluctuation of the water level. More specifically, a guide rod 201 is provided in the storage tank 2 in a vertical direction. The storage case 41 of the salt concentration sensor 4 is attached to the guide rod 201 by a slide member 202 so as to be slidable up and down. Further, the amount of air inside the storage case 41 is set such that the salt concentration sensor 4 generates a sufficient buoyancy to follow the fluctuation of the water level.

According to the present embodiment, the electrodes 44, 44 of the salt concentration sensor 4 can be located above the bottom of the tank where impurities easily accumulate, except when the water level is falling. Therefore, electrode fouling can be reduced or prevented.

FIG. 6 is an explanatory view showing a fourth embodiment of the salt concentration sensor in the salt concentration adjusting apparatus according to the present invention. In the present embodiment, an air tank is provided below the housing case 41 so that the electrodes 44, 44 can be reliably housed separately from the salt water. Describing in detail, the seal member 42 is provided inside the storage case 41. At the bottom of the storage case 41, seal members 422 are attached at three locations corresponding to the respective slide rods 43. Seal member 4
Numeral 22 is made of rubber, and is provided with an insertion hole 423 through which the slide rods 43 are slightly tightly adhered and are inserted in a watertight manner. A hollow portion 424 is provided between the seal member 42 and the bottom of the storage case 41.

Each of the slide rods 43 is provided in the hollow portion 424.
There are provided polishing plates 425, which are electrode activating means for passing through, at three positions. The polishing plate 425 is made of rubber mixed with an abrasive, and has an insertion hole 426 through which each slide rod 43 is inserted slightly. Each slide rod 43
The electrodes 44, 44 and the temperature sensor 47 are polished and activated by their frictional force when inserted. In order to perform the activation more efficiently, the polishing machine 425 may be combined with other means such as rotating the polishing plate 425 at the time of insertion or performing arc discharge.

According to this embodiment, the electrodes 44, 44 are activated every time the surfaces of the electrodes 44, 44 are inserted.
Function is maintained, and accurate measurement results can be obtained. Also,
The polishing plate 425 separates the electrodes 44, 44 and the temperature sensor 47 from the storage water 3 or the cleaning water more reliably than in the case where only the sealing member is used, so that the reduction or prevention of contamination is more effective. Can be done.

FIG. 7 is an explanatory view showing a fifth embodiment of the salt concentration sensor in the salt concentration adjusting device according to the present invention. In the present embodiment, the setting range is not limited by integrating the sensor unit and the control display unit. More specifically, since each circuit of the salt concentration control unit 5 and the indicator light 30 are integrally provided on the upper part of the storage case 41 equivalent to the storage case 41 of the salt concentration sensor 4 of the first embodiment, The device can be made compact. Therefore, it does not take up much space when installed and is easy to handle.

[0056]

The present invention has the above configuration and has the following effects. (A) When the detected concentration of salt is higher than the appropriate range, fresh water is supplied to the storage tank and / or the washing tank by the fresh water supply means, and when the salt concentration falls within the appropriate range, the fresh water supply means is not operated. . By repeating this control, the salt concentration of the stored water in the storage tank and / or the washing water in the washing tank can always be maintained in an appropriate concentration range.
Further, the electrodes of the salt concentration sensor are exposed to, or separated from, the stored water or the washing water by the electrode driving means. As a result, when the salt concentration sensor is not used, such as when the apparatus is stopped or during off-season, the stored water or the washing water can be kept out of contact. It is possible to reduce or prevent adhesion of impurities and the like and generation of rust, that is, contamination. Therefore, the electrode is hardly deteriorated, an accurate measurement result is always obtained, and the salt concentration of the storage water or the washing water can be controlled within a specified appropriate range. As a result, it is possible to maintain the activity of the nori original algae, improve the yield of dried nori, the quality of the product nori, color and luster, etc., as well as absorb moisture during storage of dry nori or salt analysis during secondary processing Troubles such as going out can be prevented.

(B) In the case where the salt water supply means is provided, when the salt concentration becomes lower than an appropriate range for some reason, the salt water is supplied to the storage tank and / or the washing tank by the salt water supply means. Since the salt concentration can be adjusted, finer and quicker adjustment is possible.

(C) When the salt concentration sensor is provided with a washing and washing means for washing the electrode, for example, when the electrode is slightly stained, the electrode is washed with water and the electrode driving means is operated. Without using the electrode the next time,
This gives you more options for reducing or preventing electrode fouling. In addition, when the electrode is separated from the storage water or the washing water, it is possible to remove a certain degree of contamination of the electrode in advance. Therefore, it is possible to more efficiently reduce or prevent electrode fouling.

(D) A temperature sensor is provided near the electrode of the salt concentration sensor, and this temperature sensor is exposed together with the electrode in storage water or washing water by means of an electrode driving means, or is separated from the storage water or washing water. In the case of the object, dust and impurities mixed in the storage water or the washing water hardly adhere to the temperature sensor, and the contamination can be reduced or prevented, so that the temperature can be measured accurately.

(E) In a device provided with protection means for protecting an electrode and / or a temperature sensor separated from stored water or washing water, the electrode or the temperature sensor may be damaged when subjected to an impact or other external force. Can be prevented.

(F) the protection means is formed of a flexible material;
In the case of a structure that has an insertion hole through which an electrode and / or a temperature sensor can be inserted, the electrode and the temperature sensor can be damaged in the event of an impact or other external force because the electrode can be tightly protected in the insertion hole and protected. Can be more effectively prevented. Also, even if left for a long period of time, the surfaces of the electrodes and the temperature sensor can be protected from rust and the like.

(G) In the case where the salt concentration sensor is provided with an electrode activating means for activating the electrode surface, the function of the electrode is maintained because the surface of the electrode is always activated. Accurate measurement results can be obtained.

(H) In the case where the salt concentration sensor is housed in a substantially watertight housing case,
The salt concentration sensor can be protected from being wet, and the occurrence of failure due to the salt concentration sensor being wet can be prevented.

(I) In the case where the storage case moves up and down in accordance with the fluctuation of the water level of the stored water or the washing water, the salt concentration sensor is used except when the water level is decreasing. It can be located above the bottom of the tank where impurities easily accumulate. Therefore, electrode fouling can be reduced or prevented.

(J) A hollow portion is provided between the protection means in the storage case and the storage case wall, and the electrode or / and the temperature sensor can enter and leave the storage case wall in a substantially water-tight state. In the case where the insertion portion is provided, the separation between the electrode and the storage water or the washing water is more reliably performed, so that the contamination can be reduced or prevented more effectively.

(K) In the case where the salt concentration control means and the display means are integrally provided in the storage case,
The device can be made compact. Therefore, it does not take up much space when installed and is easy to handle.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first embodiment of a salt concentration sensor in a salt concentration adjusting device according to the present invention.

FIG. 2 is a block diagram showing one embodiment of a salt concentration adjusting device according to the present invention.

FIG. 3 is a flow sheet showing a process for producing a raw material for laver making using the apparatus for adjusting a salt concentration according to the present invention.

FIG. 4 is an explanatory view showing a second embodiment of the salt concentration sensor in the salt concentration adjusting device according to the present invention.

FIG. 5 is an explanatory view showing a third embodiment of the salt concentration sensor in the salt concentration adjusting device according to the present invention.

FIG. 6 is an explanatory view showing a fourth embodiment of the salt concentration sensor in the salt concentration adjusting device according to the present invention.

FIG. 7 is an explanatory view showing a fifth embodiment of the salt concentration sensor in the salt concentration adjusting device according to the present invention.

[Explanation of symbols]

 A Salt concentration controller 2 Storage tank 2a Stirrer 3 Storage water 4 Salt concentration sensor 41 Storage case 42 Seal member 420 Insertion hole 43 Slide rod 44 Electrode 46 Electric cylinder 47 Temperature sensor 5 Salt concentration controller 6 Freshwater tank 7 Salt water tank 20 Electrode Drive circuit 23 Salt concentration adjustment circuit 27 First drive circuit 28 Second drive circuit P1 Fresh water supply pump P2 Salt water supply pump

Claims (11)

(57) [Claims] A salt concentration adjusting device for keeping the salt concentration of stored water and / or washing water of laver original algae within an appropriate range, comprising: a storage tank or / and washing tank; Fresh water supply means for supplying fresh water to a tank or / and a washing tank; a salt concentration sensor for detecting a salt concentration in a flow path of the storage water and / or the washing water; an appropriate salt concentration range; and a salt concentration by the salt concentration sensor. Comparing the measured values, when the measured value is higher than the appropriate salt concentration range, a salt concentration control means for outputting a signal for driving the fresh water supply means, and a display for displaying the measured value of the salt concentration of the storage water or / and the washing water. Means, wherein the salt concentration sensor comprises: an electrode; and electrode driving means for exposing the electrode in storage water or washing water or separating the electrode from the storage water or washing water. That, salinity adjustment device. And comparing the salt water supply means for supplying salt water to the storage tank and / or the washing tank with a salt concentration proper range and a salt concentration measured value by a salt concentration sensor, and the measured value is lower than the salt concentration proper range. 2. The apparatus according to claim 1, further comprising: a salt concentration control unit that outputs a signal for driving the salt water supply unit. 3. The salt concentration adjusting device according to claim 1, wherein the salt concentration sensor includes a water washing means for washing the electrodes. 4. A temperature sensor is provided near an electrode of the salt concentration sensor, and the temperature sensor is exposed together with the electrode in storage water or washing water by an electrode driving means, or is separated from the storage water or washing water. The salt concentration adjusting device according to claim 1, wherein: 5. The apparatus according to claim 1, further comprising a protection means for protecting an electrode and / or a temperature sensor separated from the stored water or the washing water. 6. The salt concentration adjusting device according to claim 5, wherein the protection means is formed of a flexible material and has an insertion hole through which an electrode and / or a temperature sensor is inserted. 7. The salt concentration adjusting device according to claim 1, wherein the salt concentration sensor includes an electrode activating means for activating the electrode surface. 8. The salt concentration adjusting device according to claim 1, wherein the salt concentration sensor is housed in a substantially watertight housing case. 9. The salt concentration adjusting device according to claim 8, wherein the storage case moves up and down in accordance with a change in the level of the stored water or the washing water. 10. A hollow portion is provided in the housing case between a protection means for protecting an electrode and / or a temperature sensor and the housing case wall, and the housing case wall has an electrode and / or a temperature sensor. The salt concentration adjusting device according to claim 8 or 9, wherein the sensor is provided with an insertion portion that can enter and exit in a substantially watertight state. 11. The salt concentration adjusting device according to claim 8, wherein a salt concentration control means and a display means are integrally provided in the storage case.