JP7231928B2 - Seaweed net processing vessel - Google Patents

Description

The present invention relates to a seaweed net processing vessel.

Patent Document 1 below describes a box-shaped ship (nori net treatment ship) in which seaweed nets are wound up in an acid treatment tank and immersed in an acid treatment solution for acid treatment, and an acid undiluted solution is discharged into the acid treatment tank. It is disclosed that the undiluted solution discharge part is provided on the entry side of the seaweed net in the acid treatment tank. The undiluted solution discharge part is a pair of pipes provided close to each other in the acid treatment tank.

JP 2018-068316 A

By the way, in the above background art, although the undiluted solution discharge part (discharge part) is provided at a position that does not interfere with the seaweed net, that is, on the entrance side of the seaweed net, the discharge part is formed as a protrusion on the surface of the acid treatment tank (treatment tank). be provided. That is, since the conventional discharge part is provided so as to protrude inward from the surface of the treatment tank, it may interfere with the seaweed net when the treatment tank is made more compact.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances described above, and an object of the present invention is to reduce the interference of a discharge portion with a seaweed net more than before.

In order to achieve the above object, in the present invention, as a first solution related to a seaweed net processing vessel, a processing tank for storing an acid treatment solution and a roll provided inside the processing tank for winding the seaweed net. a discharge section provided in the processing tank along the roll for discharging an undiluted acid solution; and a supply device for supplying the undiluted acid solution to the discharge section, wherein the discharge section is formed in the processing tank. A means is adopted in which a through hole is provided, and the undiluted acid solution is supplied from the outside of the processing bath through the through hole.

In the present invention, as a second solution for the seaweed net processing ship, in the first solution, the supply device adopts means for supplying the undiluted acid solution to the discharge part from below.

In the present invention, as a third solution to the seaweed net processing vessel, in the first or second solution, a means is adopted in which the through holes are positioned above the liquid surface of the acid treatment liquid. do.

In the present invention, as a fourth solution related to a seaweed net processing ship, in any one of the first to third solutions, the discharge part is a plurality of rollers arranged at predetermined intervals in the rotation axis direction of the roll. A means of providing a discharge hole is adopted.

In the present invention, as a fifth solution related to a seaweed net processing ship, in any one of the first to fourth solutions, the discharge part further includes a cover member provided inside the through hole. adopt the means of

In the present invention, as a sixth solution related to the seaweed net processing vessel, in the fifth solution, the cover member has a guide groove that guides downward the undiluted acid solution discharged from the through hole. adopt means.

According to the present invention, since the undiluted acid solution is discharged into the processing tank through the through-hole provided in the processing tank, it is possible to reduce the interference of the undiluted acid solution with the seaweed mesh of the discharge portion compared to the conventional art.

1 is a schematic diagram showing the overall configuration of a seaweed net processing vessel A according to an embodiment of the present invention; FIG. It is an enlarged view of the discharge part in one Embodiment of this invention, (a) is an XX line expanded sectional view in FIG. 1, (b) is an enlarged front view. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the discharge unit in one Embodiment of this invention, (a) is a front view, (b) is a YY sectional view (longitudinal sectional view) in the said front view. It is a front view which shows the modification of the discharge unit in one Embodiment of this invention.

An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the seaweed net processing ship A according to the present embodiment includes a hull 1, a processing tank 2, a roll 3, a pair of discharge parts 4A and 4B, a pair of valves 5A and 5B, a pair of pH sensors 6A, 6B, a controller 7, a pump 8 and a tank 9, and is an acid treatment apparatus for acid-treating the seaweed net W.

The seaweed net W is a long fishing net used for cultivating seaweed, and is formed by connecting a plurality of lines arranged vertically and horizontally in a grid pattern. A plurality of such seaweed nets W are laid in a seaweed farm. The seaweed to be cultivated grows while adhering to the seaweed net W.

The seaweed net processing vessel A according to the present embodiment targets the seaweed net W to which seaweed is attached, more precisely, the seaweed attached to the seaweed net W for acid treatment. Although not described in detail here, it is well known that acid treatment of seaweed during cultivation promotes the growth of seaweed, and acid treatment is generally performed in the cultivation of seaweed.

As shown in FIG. 1, the hull 1 is a long rectangular resin floating body when viewed from the front, and one longitudinal end (tip) of the hull 1 is formed in a trapezoidal shape. The hull 1 is made of Fiber Reinforced Plastic (FRP) and has a longitudinal dimension of about 3.8 m and a lateral dimension of about 1.2 m (horizontal direction in FIG. 1). The hull 1 has a propulsion device (not shown).

As shown in FIGS. 1 and 2, the treatment tank 2 is a semi-cylindrical recess formed in the center of the hull 1 and is open at the top. The treatment tank 2 is a resin container such as FRP formed integrally with the hull 1, and has a peripheral surface portion 2a and a pair of end surface portions 2b and 2c. The peripheral surface portion 2a is a semi-cylindrical surface portion (semi-cylindrical surface portion), and the end surface portions 2b and 2c are both semi-circular surface portions (semi-circular surface portions). Such an acid treatment bath 3 is an open container that stores a predetermined amount of acid treatment liquid P. As shown in FIG.

A plurality of through holes 2d are formed in the peripheral surface portion 2a of the processing tank 2 (see FIG. 3(b)). These through-holes 2d are openings that allow communication between the inside of the processing tank 2 in which the rolls 3 and the acid treatment liquid P are provided and the outside of the processing tank 2, which is the gap between the hull 1 and the processing tank 2. As shown in FIG. The through-holes 2d are arranged linearly at predetermined intervals along the longitudinal direction of the processing tank 2, that is, along the direction parallel to the rotation axis of the rolls 3, and on the left and right sides of the processing tank 2 with the rolls 3 interposed therebetween.

Here, the thickness of the resin material such as FRP on the peripheral surface portion 2a of the processing tank 2 is substantially uniform. That is, the inner surface (front surface) and the outer surface (back surface) of the processing tank 2 are substantially parallel to each other. The through holes 2d are formed in the peripheral surface 2a of the processing bath 2 so as to be substantially orthogonal to the front surface and the rear surface.

The acid treatment liquid P is a liquid that acid-treats the seaweed of the seaweed net W accommodated in the processing tank 2 by being wound around the roll 3 . More specifically, the acid-treated solution P is obtained by diluting a predetermined organic acid or an undiluted acid solution M such as hydrochloric acid with seawater of a fish farm. is an acid. Such an acid treatment liquid P acid-treats the seaweed adhering to the seaweed net W by immersing the seaweed net W in it.

The roll 3 is a rotating body arranged in the central portion of the processing tank 2 along the longitudinal direction of the processing tank 2 . The roll 3 is provided linearly inside the treatment tank 2, winds up the seaweed net W by rotating (forward rotation) around the central axis, and unwinds the seaweed net W by reversing around the central axis. . Although one roll 3 is shown in FIG. 1, depending on the width of the seaweed net W, two rolls arranged linearly in the longitudinal direction are provided.

A pair of discharge units 4A and 4B are provided on the left and right sides of the processing tank 2 along the rolls 3 to discharge the undiluted acid solution M into the processing tank 2. As shown in FIG. That is, the pair of discharge parts 4A and 4B are provided corresponding to the through holes 2d of the processing tank 2 which are provided in two lines on the left and right sides of the processing tank 2. As shown in FIG. One ejection part 4A is provided on one side (left side in FIGS. 1 and 2A) across the roll 3 in the processing tank 2, and the other ejection part 4B is provided on the other side across the roll 3 (Fig. 1 and the right side in FIG. 2(a)). The positions of the pair of discharge parts 4A and 4B are the sides of the hull 1 from which the seaweed net W enters the processing tank 2, that is, the left and right sides of the hull 1. As shown in FIG.

Such a pair of ejection portions 4A and 4B is an assembly of ejection units U shown in FIG. 2(b), and the undiluted acid solution M is supplied from below. That is, each of the discharge sections 4A and 4B is formed by linearly arranging a plurality of discharge units U at predetermined intervals in the longitudinal direction of the processing tank 2, that is, in the direction parallel to the rotation axis of the rolls 3. As shown in FIG. Each discharge unit U, ie, the pair of discharge parts 4A and 4B, is positioned above the liquid surface of the acid treatment liquid P in the processing tank 2, as shown in FIG. 2(a).

Such a discharge unit U, as shown in FIG. 3, comprises a main body 4a, a cover member 4b and three male screws 4c. The main body 4 a is a substantially tubular component that engages with the through hole 2 d of the processing tank 2 . The main body 4a is fixedly mounted in the through hole 2d from the outside of the processing bath 2, one end (front end) is exposed to the inside (surface) of the processing bath 2, and the other end (rear end) is connected via a connection tube. It is connected to the pump 8.

The main body 4a is formed with a discharge hole 4d that communicates from the front end to the rear end and that discharges the undiluted acid solution M from the front end. That is, each of the discharge portions 4A and 4B has a plurality of discharge holes 4d arranged at predetermined intervals in the rotation axis direction of the roll 3. As shown in FIG. These discharge holes 4d are formed at positions corresponding to the central axis of the substantially cylindrical main body 4a, through which the undiluted acid solution M supplied from the rear end of the main body 4a is passed and discharged into the processing bath 2 from the front end. . The direction in which the undiluted acid solution M is discharged from the discharge holes 4 d is, for example, a direction perpendicular to the inner surface of the processing bath 2 .

The cover member 4b is a component in which the mounting member 4e and the receiving member 4f are integrally joined, and is provided inside (on the surface) of the processing bath 2. As shown in FIG. The mounting member 4e has a shape in which a portion of an annular (ring-shaped) flat plate is notched over a predetermined angular range, and has three screw insertion holes through which the male screws 4c are inserted. That is, the cover member 4b is detachably attached to the processing tank 2 by means of three male screws 4c.

The notch 4g of the mounting member 4e is provided in a predetermined angle range centered on or including the lower portion of the main body 4a as shown in FIG. 3(a). This angle range is, for example, a range of ±30° around the lower side of the main body 4a or a range of 30° including the lower side of the main body 4a. The cutout portion 4g functions as a guide groove that guides downward the undiluted acid solution M discharged from the through hole 4d.

The receiving member 4f is a dome-shaped plate material obtained by three-dimensionally curving a circular flat plate, and its peripheral edge is joined to one surface of the mounting member 4e. That is, the receiving member 4f has a concave inner surface 4h (inner surface of the cover) facing the tip (discharge hole) of the main body 4a. In addition, such a cover member 4b is, for example, a metal part such as stainless steel.

Such a pair of discharge parts 4A and 4B includes a through hole 2d formed in the processing bath 2 as a component, and an acid supplied from the outside of the processing bath 2 through the through hole 2d. The undiluted solution M is discharged into the processing bath 2 . In the pair of discharge parts 4A and 4B, only the cover member 4b protrudes to the inside (surface) of the processing tank 2. As shown in FIG.

The pair of valves 5A, 5B are provided between the pump 8 and the pair of discharge portions 4A, 4B, respectively, as shown in FIG. Of the pair of valves 5A and 5B, one valve 5A adjusts the supply amount of the undiluted acid solution M to one ejection part 4A, and the other valve 5B adjusts the undiluted acid solution to the other ejection part 4B. Adjust the supply of M.

A pair of pH sensors 6A and 6B are sensors for detecting the pH value of the acid-treated liquid P. As shown in FIG. The pH sensors 6A and 6B are provided at both ends of the roll 3 in the longitudinal direction in the processing tank 2. As shown in FIG. That is, of the pair of pH sensors 6A and 6B, one pH sensor 6A is provided on the rear end side of the hull 1 in the longitudinal direction of the roll 3, and the other pH sensor 6B is provided on the hull 1 in the longitudinal direction of the roll 3. is provided on the tip side of the

Also, the pair of pH sensors 6A and 6B are positioned in the processing tank 2 such that the lower ends do not touch the bottom surface of the processing tank 2, that is, slightly above the bottom surface of the processing tank 2. As shown in FIG. Of the pair of pH sensors 6A and 6B, one pH sensor 6A outputs the pH detection value of the acid-treated liquid P as a first detection value to the controller 7, and the other pH sensor 6B outputs the pH detection value of the acid-treated liquid P as the first detection value. The pH detection value of the liquid P is output to the controller 7 as the second detection value.

The controller 7 is a PID control device that feedback-controls the pump 8 based on the first and second detection values input from the pair of pH sensors 6A and 6B and the pH target value. The controller 7 calculates the average value of the first detected value and the second detected value, generates an operation signal so that the difference between the average value and the pH target value becomes "zero", and sends the pump 8 Output. Incidentally, the pH target value is a set value manually set in advance for the controller 7 .

The pump 8 is a displacement pump whose rotational speed changes based on the operation signal. That is, the pump 8 is connected to a tank 9 and discharge portions 4A and 4B by a predetermined connection tube, and supplies the undiluted acid solution M at a flow rate corresponding to the operation signal from the tank 9 to the discharge portions 4A and 4B.

The tank 9 is a container having a predetermined capacity for storing the undiluted acid solution M. The tank 9 is connected to the pump 8 by a connection tube, and discharges the undiluted acid solution M to the pump 8 at a flow rate corresponding to the rotation speed of the pump 8 .

The pair of pH sensors 6A and 6B, the controller 7, the pump 8 and the tank 9 described above constitute a supply device in the present invention. That is, the controller 7, the pump 8 and the tank 9 automatically adjust the supply amount of the undiluted acid solution M supplied to the pair of discharge parts 4A and 4B based on the pH detection values of the pair of pH sensors 6A and 6B.

Here, the undiluted acid solution M is an acid aqueous solution having a pH value lower than the pH value of the acid-treated solution P, that is, having a higher acidity than the acid-treated solution P. The acid stock solution M is, for example, an organic acid such as malic acid, lactic acid, or citric acid, hydrochloric acid as a food additive as a pH adjuster, or an acid such as organic acid or hydrochloric acid added with salt to increase the osmotic pressure. Alternatively, the acid treatment liquid P is mixed with a predetermined acid. Further, the undiluted acid solution M is colored in a predetermined color other than transparent, such as caramel brown, so as to be visible.

Next, the acid treatment work using the seaweed net processing ship A according to the present embodiment will be described in detail, including the operation of the seaweed net processing ship A.

In the acid treatment work using the seaweed net processing vessel A, the worker operates the seaweed net processing vessel A to sequentially wind the seaweed net W on the roll 5 and immerse the seaweed net W in the acid treatment liquid P. . Then, when a predetermined time has passed after winding the seaweed net W around the roll 5, the operator unwinds the seaweed net W from the roll 5 and sends it out to sea.

That is, the time from winding the seaweed net W around the roll 5 to unwinding it is the acid treatment time during which the seaweed net W comes into contact with the acid treatment liquid P. As shown in FIG. By sequentially moving the seaweed net processing vessel A, the operator sequentially performs acid treatment over a predetermined acid treatment time on a plurality of seaweed nets W previously attached (set) on the sea.

Here, in order to stably acid-treat each seaweed net W in the acid-treating work, the pH value of the acid-treating liquid P, that is, the pH detection value detected by the pH sensor 6, must be stably maintained at the pH target value. is extremely important. If the detected pH value fluctuates, the effect of the acid treatment may be insufficient, or the laver may be damaged by excessive acid treatment.

Under these circumstances, in the seaweed net processing vessel A according to the present embodiment, the pH value of the acid-treated solution P in the processing tank 2 is adjusted by feedback-controlling the pump 8 based on the detected pH value and the target pH value. (pH detection value) is maintained at the pH target value. That is, the controller 7 controls the rotation speed of the pump 8 so that the average value of the pH detection values of the pair of pH sensors 6A and 6B becomes equal to the pH target value.

As a result, the undiluted acid solution M is discharged into the processing bath 2 from the discharge holes 4d of the main body 4a of each discharge unit U in the pair of discharge parts 4A and 4B. This undiluted acid solution M runs along the surface of the processing bath 2 and flows downward from the notch 4g. Although it depends on the discharge flow rate of the undiluted acid solution M, if the discharge flow rate is relatively high, the undiluted acid solution M discharged from the discharge hole 4d collides with the inner surface 4h (inner surface of the cover) of the cover member 4b in the discharge unit U, and then It flows down along the dome-shaped curved inner surface 4h and penetrates into the acid treatment liquid P by flowing down the surface of the processing tank 2 through the notch 4g.

In addition, in such an acid treatment, if there is a local deviation in the pH value (detected pH value) of the acid treatment liquid P, the entire seaweed net W cannot be uniformly acid treated. That is, the acid treatment of a part of one laver net W may be insufficient, or the acid treatment of a part of one laver net W may be excessive, and the acid treatment of one laver net W may occur. The effect of treatment is uneven. Such an acid treatment is a poor quality acid treatment.

In the seaweed net processing ship A according to the present embodiment, discharge sections 4A and 4B are provided on both sides of the roll 3 in order to ensure the uniformity of acid processing. That is, every time the seaweed net W is wound around the roll 3, seawater flows into the treatment tank 2 together with the seaweed net W, and the pH value (detected pH value) of the acid-treated solution P deviates from the pH target value.

However, in this seaweed net processing vessel A, the discharge units 4A and 4B are provided on both sides of the processing tank 2 with the roll 3 interposed therebetween. Supply stock solution M. Therefore, according to the seaweed net processing ship A, it is possible to equalize the pH values (detected pH values) of the acid-treated liquid P in the horizontal direction of the processing tank 2 with respect to the pH target value.

The discharging units 4A and 4B of the seaweed net processing vessel A have a structure in which a plurality of discharging units U are arranged along the longitudinal direction of the processing tank 2, that is, along the rotation axis direction of the rolls 3. As shown in FIG. That is, in this seaweed net processing vessel A, the undiluted acid solution M is supplied to a plurality of locations in the processing tank 2 in the longitudinal direction. Therefore, according to this seaweed net processing ship A, it is possible to equalize the pH value (detected pH value) of the acid-treated solution P in the longitudinal direction of the processing tank 2 with respect to the pH target value.

Further, in the discharging parts 4A and 4B of the seaweed net processing vessel A, the portion protruding from the surface of the processing tank 2 is substantially only the cover member 4b of the discharging unit U. As shown in FIG. That is, since this seaweed net processing vessel A discharges the undiluted acid solution M into the processing tank 2 from the outside to the inside of the through hole 2d provided in the processing tank 2, a pipe is installed inside the processing tank (acid treatment tank). The amount of projection on the surface of the processing tank 2 is extremely small compared to the conventional seaweed net processing ship provided with . Therefore, according to this seaweed net processing vessel A, it is possible to greatly reduce the interference of the discharging parts 4A and 4B with the seaweed net W compared to the conventional one.

The discharging parts 4A and 4B of the seaweed net processing vessel A are located above the liquid surface of the acid treatment liquid P in the processing tank 2, and the undiluted acid liquid M is colored. That is, for example, when the discharge hole of the main body 4a of the discharge unit U is blocked due to clogging or the like and a discharge failure of the undiluted acid solution M occurs, the operator can quickly fix the discharge failure. Therefore, according to this seaweed net processing vessel A, it is possible to quickly take countermeasures against defects in the discharge sections 4A and 4B.

In addition, the discharge sections 4A and 4B in the seaweed net processing vessel A are provided with cover members 4b. Therefore, according to this seaweed net processing vessel A, it is possible to more reliably prevent the undiluted acid solution M discharged from the discharge holes 4d in each discharge unit U from scattering toward the roll 3, that is, toward the seaweed net W. .

The notch 4g in the cover member 4b is provided not only below the main body 4a, that is, the discharge hole 4d, but also within a predetermined angular range centered on or including the center below the discharge hole 4d. In other words, the pair of discharge parts 4A and 4B can cause the undiluted acid solution M to flow down over a wide area on the surface of the processing bath 2 rather than a narrow downward area. Therefore, according to this seaweed net processing vessel A, it is possible to cause the undiluted acid solution M to flow down as a relatively thin layer on the surface of the processing tank 2, thereby improving the mixing performance of the undiluted acid solution M with the acid-treated solution P. It is possible to

When the seaweed net W is wound around the roll 3 and when the seaweed net W is unwound from the roll 3, the acid-treated solution P in the treatment tank 2 is subject to water flow and rocking. The undiluted acid solution M that has entered the acid-treated solution P is agitated by such water flow and shaking of the acid-treated solution P, and the pH value of the acid-treated solution P as a whole is adjusted to the pH target value.

Further, the undiluted acid solution M is supplied from below to the pair of discharge sections 4A and 4B, that is, the assembly of the discharge units U in the seaweed net processing ship A. As shown in FIG. That is, when the pump 8 stops operating, the discharge of the undiluted acid solution M from the discharge portions 4A and 4B is promptly stopped. Therefore, according to this seaweed net processing ship A, it is possible to effectively suppress the unnecessary undiluted acid solution M from flowing into the acid-treated solution P.

It should be noted that the present invention is not limited to the above-described embodiments, and for example, the following modifications are conceivable.
(1) In the above embodiment, the seaweed net processing vessel A in which one or two rolls 3 are arranged in a straight line has been described, but the present invention is not limited to this. The present invention can also be applied to a seaweed net processing ship of the type in which a plurality of rolls face each other in parallel, as disclosed in Patent Document 1. Also in this case, a pair of discharge parts are provided on the side from which the seaweed net wound on the roll enters the processing tank, that is, on the left and right sides of the hull.

(2) In the above-described embodiment, the discharge unit U including the main body 4a, the cover member 4b, and the three male screws 4c is adopted, but the present invention is not limited to this. The configuration of the ejection unit U described above is merely an example. For example, the shape of the cover member of the present invention is not limited to the shape of the cover member 4b described above. may

Also, the shape of the notch (guide groove) in the mounting member is not limited to the shape described above, and may be other shapes. Further, the cover member 4b described above is a metal component in which the mounting member 4e and the receiving member 4f are integrally joined, but is a resin molded component in which the mounting member 4e and the receiving member 4f are integrally formed. good too.

(3) Furthermore, a discharge unit U' having a cover member 4i as shown in FIG. 4 may be adopted. This cover member 4i is provided as a single cover for each discharge section. That is, the cover members 4i are individually provided for the plurality of main bodies 4a (discharge holes 4d) arranged on the left side of the processing tank 2 and the plurality of main bodies 4a (discharge holes 4d) arranged on the right side of the processing tank 2. It is formed in a long shape so as to entirely cover a plurality of main bodies 4a (discharge holes 4d) arranged in a straight line on the left and right sides of the processing tank 2. As shown in FIG. According to such a discharge unit U', since the number of units to be used is greatly reduced compared to the cover member 4b described above, maintenance such as replacement is easy.

(4) In the above embodiment, a pair of ejection portions 4A and 4B are provided, but the present invention is not limited to this. Only one of the pair of ejection portions 4A and 4B may be provided as required. Also, the above-described cover members 4b and 4i may be omitted as necessary. Further, the number of ejection holes 4d in each of the ejection portions 4A and 4B, that is, the number of through holes 2a in the processing tank 2 may be appropriately set based on the shape and size of the processing tank 2 and the like.

(5) In the above embodiment, a plurality of ejection units U are linearly arranged for each of the ejection sections 4A and 4B, but the present invention is not limited to this. The arrangement form of the plurality of ejection units U may be a form other than a straight line, if necessary. Further, the arrangement form of the plurality of discharge units U does not need to be parallel to the roll 3 even in a linear arrangement form, and may be inclined with respect to the roll 3 .

(6) In the above embodiment, as shown in FIG. 2B, the undiluted acid solution M is supplied from below the discharge unit U, but the present invention is not limited to this. Since the supply form of the undiluted acid solution M to the ejection unit U is intended to optimize the supply amount of the undiluted acid solution M with respect to the acid treatment liquid P as described above, it is necessary to consider such optimization. If not, the undiluted acid solution M may be supplied from the same height as the discharge unit U, or in extreme cases, the undiluted acid solution M may be supplied from a position higher than the discharge unit U.

(7) In the above embodiment, the discharge direction of the undiluted acid solution M in the discharge unit U is set perpendicular to the inner surface of the processing tank 2, but the present invention is not limited to this. The discharge direction of the undiluted acid solution M may be set to a direction inclined with respect to the orthogonal direction, for example, a direction inclined downward.

(8) In the above embodiment, the pair of ejection portions 4A and 4B, ie, each ejection unit U, is provided above the liquid surface of the acid treatment liquid P in the processing bath 2, but the present invention is limited to this. not. A pair of ejection portions 4A and 4B, that is, each ejection unit U may be provided below the liquid surface of the acid treatment liquid P, that is, in the acid treatment liquid P, if necessary.

A Seaweed net processing vessel W Seaweed net M Acid treatment liquid U, U' Discharge unit 1 Hull 2 Treatment tank 2a Surrounding surface 2b, 2c End surface 2d Through hole 3 Roll 4A, 4B Discharge part 4a Main body 4b, 4i Cover member 4c Male Screw 4d Discharge hole 4e Mounting member 4f Receiving member 4g Notch (guide groove)
4h inner surface 5A, 5B valve 6A, 6B pH sensor 7 controller 8 pump 9 tank

Claims (4)

a treatment tank for storing the acid treatment liquid;
a roll provided inside the treatment tank for winding a seaweed net;
a discharge unit provided in the processing tank along the roll for discharging the undiluted acid solution;
a supply device for supplying the undiluted acid solution to the discharge part;
The discharge part includes a through hole formed in the processing bath, the undiluted acid solution is supplied to the through hole from the outside of the processing bath, and a cover member provided inside the through hole,
The supply device supplies the undiluted acid solution from below to the discharge part,
The seaweed net processing vessel, wherein the cover member has an inner surface curved like a dome against which the undiluted acid solution discharged from the through hole collides . 2. The seaweed net processing ship according to claim 1, wherein the cover member has a guide groove for guiding downward the undiluted acid solution discharged from the through hole. 3. The vessel for treating seaweed nets according to claim 1, wherein the through holes are positioned above the surface of the acid treatment liquid. The seaweed net processing vessel according to any one of claims 1 to 3, wherein the discharge section has a plurality of discharge holes arranged at predetermined intervals in the direction of the rotation axis of the roll.

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