JP6602133B2 - Ginger cleaning system for live squid - Google Patents

Description

  The present invention relates to a live squid ginger cleaning system for removing impurities by circulating water in a ginger.

  In the fisheries industry, the difference in market value between live fish and fresh fish is extremely large, and seafood captured by fishing boats is put into ginger and transported to fishing ports.

  For example, Patent Document 1 discloses a water intake pipe in which a water intake is disposed in water, a pump in which the water intake pipe is connected to a suction port, and oxygen or air provided in the water intake pipe on the suction port side of the pump. A fishing vessel fixed to each of an intake portion for taking in water, one or more discharge pipes connected via or without a branch pipe disposed in the discharge part of the pump, and an end of the one or more discharge pipes There is disclosed a freshness maintaining device for a fishing boat provided with a fine bubble water flow generator disposed in the water tank.

  In the configuration described in Patent Document 1, it is assumed that the water temperature in the ginger can be easily maintained within a predetermined appropriate range by taking relatively low temperature seawater at the bottom of the ship from a water passage formed at the bottom of the ship. ing.

JP 2003-102324 A

  However, in the structure for taking seawater outside the ship as described above, there is a limit to the adjustment of the water temperature. Particularly in recent years, the seawater temperature has risen. For example, when the seawater temperature exceeds 30 ° C. in summer, the temperature in the ginger rises and live fish may be drowned.

  As a solution to these problems, a method using a chilled water machine is known. That is, a method is known in which seawater in a ginger is circulated through a chiller to lower the temperature of the seawater in the ginger. When such a circulation type ginger is used, filtration with a filter is performed to keep the inside of the ginger clean.

  However, there are also impurities that are difficult to remove by filtration with a filter. For example, when transporting squid with ginger, impurities such as squid and ovarian jelly are generated in the ginger, but it has been difficult to remove such impurities by ordinary filter filtration or the like. If these viscous impurities are accumulated without being removed, they cause clogging of the gills and the squid is drowned.

  Accordingly, an object of the present invention is to provide a live squid ginger cleaning system that can remove impurities that are difficult to remove by ordinary filter filtration or the like in a circulation type ginger.

  The present invention has been made to solve the above-described problems, and is characterized by the following.

The invention described in claim 1 is a live squid ginger cleaning system that circulates water in the ginger and removes impurities, an oxygen supply unit for taking in air into the water and increasing the dissolved oxygen concentration, A static water part into which water that has passed through the oxygen supply part is introduced; a treated water supply port for supplying water that has passed through the static water part to the ginger; and the oxygen supply part provided above the static water part. And a foam outlet for discharging the foam that has passed through the foam channel to the outside , wherein the foam channel and the hydrostatic part are from the oxygen supply unit Also, the foam channel and the hydrostatic part are vertically divided by a partition wall to form a two-layer structure .

The invention according to claim 2 is characterized in that, in addition to the features of the invention according to claim 1, the still water portion includes wall portions alternately arranged at predetermined intervals, so that water flows in a zigzag manner up and down. The air accumulated in the air layer generated in the upper part of the hydrostatic part is configured to be discharged to the outside by an air vent tube .

In addition to the features of the invention described in claim 1 or 2, the invention described in claim 3 can remove impurities by floating separation by supplying water that has passed through the static water portion to the ginger. A surface water intake unit for removing stable foam generated on the water surface due to the floating separation, the surface water intake unit including a flexible tube, and surface water from the tip of the tube. The tube is configured to take water, and the tube is configured so that two or more floating members are attached in the longitudinal direction and float along the water surface .
The invention described in claim 4 is characterized in that, in addition to the features of the invention described in claim 3, a swirling flow pump for generating a water flow in the ginger is provided .

  The invention described in claim 5 is characterized in that, in addition to the features of the invention described in claim 3 or 4, an auxiliary plate for collecting the stable foam is attached to the tip of the tube.

  The invention according to claim 1 is as described above, an oxygen supply unit for taking in air into water to increase a dissolved oxygen concentration, a hydrostatic unit into which water that has passed through the oxygen supply unit is introduced, and the hydrostatic water A foam flow path that is provided above the section and allows the foam generated in the oxygen supply section to pass therethrough. According to such a configuration, by supplying oxygen, dirt contained in water can be removed at the same time as supplying oxygen while keeping the amount of dissolved oxygen in water appropriately. That is, when ginger water is dirty, stable foam containing dirt is generated when it passes through the oxygen supply section. And since a foam flow path and a still water part have a two-layer structure up and down, a stable foam flows into a foam flow path, and water flows into a still water part, and is isolate | separated. Since the stable foam that has flowed into the foam flow path is discharged to the outside, the dirt is discharged to the outside. On the other hand, the water that has flowed to the still water part is returned to the ginger. Therefore, impurities that are difficult to remove by a normal filter filtration or the like can be removed in the circulation type ginger.

  In addition, since the removal of such impurities can be performed simultaneously with the oxygen supply, the apparatus can be miniaturized and the energy consumption is small. Therefore, even small fishing boats with limited space and energy can be employed.

The invention of claim 3 are as defined above, by supplying the water that has passed through the pre-Symbol hydrostatic unit to the cages, it was capable of removing impurities by flotation. That is, bubbles with a small particle (corresponding to microbubbles) remain in water at the hydrostatic part, and water containing the microbubbles is supplied to the ginger. Then, impurities are adsorbed to the microbubbles and float on the water surface of the ginger as a stable foam (floating separation). Impurities can be removed by removing the stable foam. According to such a configuration, impurities contained in water that has not passed through the circulation device can also be removed, so that impurities can be efficiently removed with low energy.
In addition, since the particle size of the dirt is increased by the agglomeration effect by the circulation process accompanied by the floating separation, it is possible to treat the dirt that is difficult to filter by itself.

  The invention according to claim 3 is as described above, and includes a surface water intake unit for removing stable foam generated on the water surface by the floating separation, and the surface water intake unit includes a flexible tube. The surface water is taken from the tip of the tube. According to such a configuration, the stable foam in which the impurities are adsorbed by the tube that moves irregularly on the water surface can be sucked in, so that the impurities can be efficiently removed.

Moreover, invention of Claim 3 is as above-mentioned, and is provided with the floating member which floats the said tube on the water surface. According to such a configuration, surface water can be sucked together with air by floating the tube on the water surface. Thereby, while improving suction performance, the stable foam which floats on the water surface can be removed efficiently.

  The invention according to claim 5 is as described above, and an auxiliary plate for collecting the stable foam is attached to the tip of the tube. According to such a configuration, the stable foam flowing on the water surface can be guided to the tip of the tube, so that the stable foam can be efficiently removed.

It is the schematic of a cleaning system, Comprising: It is the figure which looked at the ginger from the top. It is a block diagram which shows the structure of a circulation part. It is the schematic which shows the oxygen supply tank of a circulation part. It is a figure which shows the example of attachment of the floating member in a surface layer water intake unit. (A) It is sectional drawing which shows the relationship between a tube and a 1st floating member, (b) It is sectional drawing which shows the relationship between a tube and a 2nd floating member. (A) External view of auxiliary plate attached to tube, (b) External view of auxiliary plate attached to tube according to modification.

  Embodiments of the present invention will be described with reference to the drawings.

  The ginger 10 according to the present embodiment is a circulation system that circulates seawater stored therein, and is installed, for example, on a fishing boat and used to transport live squid. As shown in FIG. 1, the ginger 10 includes corner plates 10a to 10d, filters 10e and 10f, a water amount adjusting unit 11, a first swirling flow pump 14, a first discharge pipe 15, and a water intake pipe 16. The water supply pipe 17, the circulation unit 20, the second swirling flow pump 35, the second discharge pipe 36, and the surface water intake unit 40 are provided.

  The corner plates 10a to 10d are curved plates respectively disposed at the four corners of the ginger 10. The corner plates 10a to 10d are for guiding the water flow generated by the first swirl flow pump 14 and the second swirl flow pump 35, which will be described later, to swirl within the ginger 10.

  The filters 10e and 10f are mat-like filters extending from the end portions of the corner plates 10a and 10c. The filters 10e and 10f are for preventing dust from entering when water is drawn behind the corner plates 10a and 10c. In addition, squid and ovulation jelly are not settled and float in the seawater, so that the squid and ovule jelly and the like are adsorbed by water intake from the side of the water tank.

  The water amount adjusting unit 11 is a mechanism that automatically takes in and supplies seawater from the outside of the ship when the amount of water in the ginger 10 decreases due to foam separation or floating separation. The water amount adjusting unit 11 includes a float 12 and an automatic opening / closing valve 13. The float 12 floats in the ginger 10 and moves up and down according to the water surface level. When the float 12 is at a position lower than a predetermined height, the automatic opening / closing valve 13 is opened and seawater is supplied from the outside of the ginger.

  The first swirling flow pump 14 and the first discharge pipe 15 are for generating a water flow in the ginger 10, and are disposed behind the corner plate 10a. The first swirling flow pump 14 sucks water and discharges it from the tip of the first discharge pipe 15.

  Similarly, the second swirling flow pump 35 and the second discharge pipe 36 are for generating a water flow in the ginger 10 and are disposed behind the corner plate 10c. The second swirling flow pump 35 sucks water and discharges it from the tip of the second discharge pipe 36.

The 1st discharge pipe 15 and the 2nd discharge pipe 36 are arrange | positioned at the corner | angular part which the ginger 10 opposes, and discharge water in the opposite direction. For this reason, the water discharged by the first discharge pipe 15 and the second discharge pipe 36 flows while turning along the corner plates 10a to 10d. In this embodiment, a pair of swirling flow pumps and discharge pipes are used. However, depending on the water tank size, only one swirling flow pump and discharge pipe may be provided.
The intake pipe 16 is a pipe for sending the water in the ginger 10 to the circulation unit 20. The intake pipe 16 is disposed behind the corner plate 10c.
The water supply pipe 17 is a pipe for returning the water that has passed through the circulation unit 20 into the ginger 10. The water supply pipe 17 is disposed behind the corner plate 10c.

  The circulation unit 20 is a mechanism for circulating the water in the ginger 10 to adjust the temperature and the amount of dissolved oxygen, and to remove impurities. As shown in FIG. 2, the circulation unit 20 includes a water intake pump 21, a filtration device 22, a water cooler 23, and an oxygen supply tank 24.

The intake pump 21 is a pump for drawing water in the ginger 10 from the intake pipe 16. The water drawn from the ginger 10 by the intake pump 21 passes through the filtration device 22, the cold water machine 23, and the oxygen supply tank 24 in this order and is returned to the ginger 10.
The filtration device 22 is for removing impurities by filtration with a filter. Impurities that can be removed by the filter are removed by passing through the filtration device 22.

  The chiller 23 is a device that forcibly cools the taken-in water. The water cooler 23 lowers the water temperature so that the water temperature in the ginger 10 can be adjusted to an arbitrary temperature.

The oxygen supply tank 24 is for increasing dissolved oxygen in water and purifying water. As shown in FIG. 3, the oxygen supply tank 24 includes an oxygen supply unit 25, a hydrostatic unit 28, and a foam channel 30.
The oxygen supply unit 25 is for increasing dissolved oxygen in water, and includes an oxygen supply nozzle 26 and a nozzle tank 27.

  The oxygen supply nozzle 26 is an ejector-type nozzle for taking in air into the water and increasing the dissolved oxygen concentration. An air tube 26 a is connected to the central portion of the oxygen supply nozzle 26, and air is naturally taken in from the air tube 26 a when the pressure water passes through the oxygen supply nozzle 26. The air taken in from the air tube 26 a is dissolved in water passing through the oxygen supply nozzle 26 and is ejected from the tip of the oxygen supply nozzle 26.

  The nozzle tank 27 is a tank for arranging the oxygen supply nozzle 26, and is arranged on the upstream side of the hydrostatic part 28 and the foam channel 30. The water flowing from the upstream chiller 23 is first supplied to the nozzle tank 27, and the water overflowing from the nozzle tank 27 flows to the downstream still water section 28. In this nozzle tank 27, an oxygen supply nozzle 26 is arranged with the ejection port facing downward.

  The hydrostatic part 28 is a part into which water that has passed through the oxygen supply part 25 is introduced, and includes a plurality of wall parts 28a that extend vertically as shown in FIG. The plurality of wall portions 28a are alternately arranged at a predetermined interval so that water flows in a zigzag manner up and down. When water flows through the hydrostatic part 28, an air layer is formed in the upper part. The air layer communicates with an air bypass 28b provided in the wall portion 28a. Further, the air accumulated in the air layer is discharged to the outside by the air vent tube 28c.

  By adopting such a configuration, when water flows through the still water portion 28, bubbles in the water having a predetermined diameter or more can be removed. That is, since relatively large bubbles rise at a high speed, they rise to the air layer and are removed from the water when flowing through the still water portion 28. For this reason, the water that has passed through the hydrostatic part 28 contains only bubbles corresponding to microbubbles (for example, 30 μm or less).

  A treated water supply port 29 that communicates with the water supply pipe 17 is provided at the outlet of the still water section 28, and water that has passed through the still water section 28 is supplied to the ginger 10.

  The foam channel 30 is a channel for allowing the foam generated in the oxygen supply unit 25 to pass through, and is provided above the hydrostatic unit 28. The foam flow path 30 and the hydrostatic part 28 are divided into two layers by a partition wall and have a two-layer structure.

  When the water flowing into the oxygen supply tank 24 is dirty, when the pressure water passes through the oxygen supply nozzle 26, stable foam containing dirt is generated and collected on the upper part of the oxygen supply tank 24 (foam separation). . This stable foam is discharged to the outside through the foam flow path 30. A foam discharge port 31 communicating with the outside is provided at the outlet of the foam channel 30.

  The surface water intake unit 40 is for removing the stable foam generated on the water surface of the ginger 10. That is, when water containing bubbles corresponding to microbubbles is supplied to the ginger 10 through the hydrostatic part 28, impurities are adsorbed to the microbubbles and float as stable bubbles on the water surface (floating separation). The surface layer water intake unit 40 is for removing the stable foam generated by the floating separation. The surface water intake unit 40 includes a tube 41, a first floating member 42, a second floating member 43, a fixing band 44, and an auxiliary plate 45.

The tube 41 is a flexible bellows-like tube that can be bent freely. The tube 41 receives water flow and irregularly floats on the water surface of the ginger 10, and takes in surface water from the opening 41a at the tip. By taking the surface layer water in this way, the stable foam generated by the floating separation is sucked and removed. Although not particularly illustrated, the tube 41 is connected to a pump, and discharges water or the like sucked from the opening 41a to the outside.
In addition, since the tube 41 moves irregularly, it does not continue taking in the same location, so that a wide range of stable foam can be sucked and removed.

  The first floating member 42 and the second floating member 43 are for giving buoyancy to the tube 41 and floating the water surface. The first floating member 42 and the second floating member 43 are attached to the tube 41 by a fixing band 44. The first floating member 42 is attached to the distal end side of the tube 41 with respect to the second floating member 43.

  In the present embodiment, as shown in FIG. 5A, the first floating member 42 is formed with a notch 42 a for allowing the tube 41 to pass therethrough. The notch 42a is provided with a gradient so that the tip side of the tube 41 is higher. On the other hand, as shown in FIG. 5B, the second floating member 43 is not formed with a notch 42a. By forming in this way, the tip (opening 41a) of the tube 41 can be made slightly upward. By opening the opening 41a of the tube 41 upward, a part of the opening 41a can be opened above the water surface, improving the suction performance and efficiently removing the stable foam floating on the water surface. Can do.

  The first floating member 42 and the second floating member 43 can be attached to the tube 41 at different positions. The movement and angle of the tube 41 can be adjusted by changing the mounting positions of the first floating member 42 and the second floating member 43.

  For example, as shown to Fig.4 (a), if the 1st floating member 42 and the 2nd floating member 43 are made to approach and attach, the opening part 41a of the tube 41 can be made upward.

  Moreover, as shown in FIG.4 (b), if the 1st floating member 42 and the 2nd floating member 43 are separated and attached, the direction of the opening part 41a of the tube 41 can be made near horizontal.

  Moreover, as shown in FIG.4 (c), even if the 1st floating member 42 and the 2nd floating member 43 are attached at a different angle, the direction of the opening part 41a of the tube 41 can be made near horizontal.

  The auxiliary plate 45 is a member attached to the tip of the tube 41 in order to collect stable foam. For example, as shown in FIG. 6A, an auxiliary plate 45 that covers one side of the opening 41 a of the tube 41 may be used. If such an auxiliary plate 45 is used, the water flow can be received by the auxiliary plate 45 as shown in FIG. That is, by arranging the auxiliary plate 45 so as to be substantially perpendicular to the water flow, the water flow is decelerated, and the stable foam that has flown on the water flow is collected by the auxiliary plate 45 and sucked by the tube 41. be able to.

  In addition, for example, a funnel-shaped auxiliary plate 45 as shown in FIG. 6B may be used. If the auxiliary plate 45 having such a large opening is used, the suction efficiency of the tube 41 can be improved.

  As described above, according to the present embodiment, the oxygen supply unit 25 for taking in air into the water to increase the dissolved oxygen concentration, the still water unit 28 into which the water that has passed through the oxygen supply unit 25 is introduced, A foam flow path 30 that is provided above the hydrostatic section 28 and allows the foam generated in the oxygen supply section 25 to pass therethrough. According to such a configuration, by supplying oxygen, dirt contained in water can be removed at the same time as supplying oxygen while keeping the amount of dissolved oxygen in water appropriately. That is, when the water of the ginger 10 is soiled, stable foam containing the soil is generated when it passes through the oxygen supply nozzle 26. And since the foam flow path 30 and the still water part 28 have a two-layer structure up and down, a stable foam flows into the foam flow path 30, and water flows into the still water part 28 and is isolate | separated. Since the stable foam that has flowed into the foam flow path 30 is discharged to the outside, the dirt is discharged to the outside. On the other hand, the water that has flowed into the still water section 28 is returned to the ginger 10. Therefore, in the circulation type ginger 10, impurities that are difficult to remove by normal filter filtration or the like can also be removed.

  In addition, since the removal of such impurities can be performed simultaneously with the oxygen supply, the apparatus can be miniaturized and the energy consumption is small. Therefore, even small fishing boats with limited space and energy can be employed.

  In addition, by removing bubbles in the water having a predetermined diameter or more in the static water portion 28 and supplying the water that has passed through the static water portion 28 to the ginger 10, impurities can be removed by floating separation. That is, bubbles having a small particle size (corresponding to microbubbles) remain in the water at the hydrostatic part 28, and water containing the microbubbles is supplied to the ginger 10. Then, impurities are adsorbed to the microbubbles and float on the water surface of the ginger 10 as a stable foam (floating separation). Impurities can be removed by removing the stable foam. According to such a configuration, since impurities contained in the water that has not passed through the circulation unit 20 can also be removed, the impurities can be efficiently removed with low energy.

  In addition, a surface water intake unit 40 for removing stable foam generated on the water surface due to the floating separation is provided. The surface water intake unit 40 includes a flexible tube 41, and takes surface water from the tip of the tube 41. To do. According to such a configuration, the stable foam in which the impurities are adsorbed by the tube 41 that moves irregularly on the water surface can be sucked, so that the impurities can be efficiently removed.

  Moreover, the floating members 42 and 43 which float the said tube 41 on the water surface are provided. According to such a configuration, surface water can be sucked together with air by floating the tube 41 on the water surface. Thereby, while improving suction performance, the stable foam which floats on the water surface can be removed efficiently.

  Further, an auxiliary plate 45 for collecting the stable foam was attached to the tip of the tube 41. According to such a configuration, since the stable foam flowing on the water surface can be guided to the tip of the tube 41, the stable foam can be efficiently removed.

DESCRIPTION OF SYMBOLS 10 Ginger 10a, 10b, 10c, 10d Corner plate 10e, 10f Filter 11 Water quantity adjustment part 12 Float 13 Automatic open / close valve 14 First swirl flow pump 15 First discharge pipe 16 Water intake pipe 17 Water supply pipe 20 Circulation part 21 Water intake pump 22 Filtration Equipment 23 Chilled water machine 24 Oxygen supply tank 25 Oxygen supply part 26 Oxygen supply nozzle 26a Air tube 27 Nozzle tank 28 Still water part 28a Wall part 28b Air bypass 28c Air vent tube 29 Treated water supply port 30 Foam flow path 31 Foam discharge port 35 2 Swirling pump 36 Second discharge pipe 40 Surface water intake unit 41 Tube 41a Opening 42 First floating member 42a Notch 43 Second floating member 44 Fixed band 45 Auxiliary plate

Claims (5)

A live squid ginger cleaning system that removes impurities by circulating water in the ginger,
An oxygen supply for taking in air into the water and increasing the dissolved oxygen concentration;
A hydrostatic part into which water that has passed through the oxygen supply part is introduced;
A treated water supply port for supplying water that has passed through the static water section to the ginger;
A foam channel that is provided above the hydrostatic section and allows foam generated in the oxygen supply section to pass through;
A foam outlet for discharging the foam that has passed through the foam flow path to the outside;
Equipped with a,
The foam channel and the hydrostatic part are disposed downstream of the oxygen supply part,
The cleansing system for live squid ginger, wherein the foam channel and the hydrostatic part are divided into two layers by a partition wall . The hydrostatic part is provided with walls arranged alternately at predetermined intervals so that water flows in a zigzag manner, and the air accumulated in the air layer generated at the upper part of the hydrostatic part is an air vent tube. The ginger cleaning system for live squid according to claim 1, wherein the system is configured to be discharged to the outside . By supplying the water passing through the pre-Symbol hydrostatic unit in the preserve, it is one that allows removal of impurities by flotation,
A surface layer water intake unit for removing stable foam generated on the water surface by the floating separation,
The surface water intake unit includes a flexible tube and takes surface water from the tip of the tube.
3. The live squid ginger cleaning system according to claim 1 or 2 , wherein the tube is configured so that two or more floating members are attached in the longitudinal direction and float along the water surface . 4. The live squid ginger cleaning system according to claim 3, further comprising a swirl flow pump for generating a water flow in the ginger.   The live squid ginger cleaning system according to claim 3 or 4, wherein an auxiliary plate for collecting the stable foam is attached to a tip of the tube.

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