JP2009148223A - Seawater circulating system for laver storage tank - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seawater circulating system capable of beforehand preventing decrease of an oxygen concentration of seawater which is stored together with laver raw algae in a laver storage tank, and increase of temperature during a period of storing laver raw algae in a laver storage tank, and as a result of this, capable of improving freshness of laver raw algae stored in a laver storage tank and consequently, improving the quality of dried laver. <P>SOLUTION: This seawater circulating system includes connecting a seawater accumulating tank which accumulates seawater to a laver storage tank which stores laver raw algae, and circulating seawater between the laver storage tank and the seawater accumulating tank. The seawater circulating system is set with an oxygen feeder for supplying oxygen to seawater to be circulated, and a seawater substituting device for substituting seawater to be circulated in the case that an oxygen concentration of seawater is less than a prescribed concentration, or a salinity concentration of seawater is less than a prescribed concentration. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a seawater circulation system for a seaweed storage tank that connects seawater storage tanks that store seawater to seaweed storage tanks that store seaweed original algae and that circulates seawater between these seaweed storage tanks and seawater storage tanks. Is.

  Conventionally, in the production of dry nori, the seaweed algae harvested from the farm are stored in seaweed storage tanks with seawater, the required amount of seaweed algae is taken out from the seaweed storage tanks, and the seaweed algae is shredded. At the same time, the density was adjusted to a predetermined density, and then, the dried laver was produced by paper making and drying using a laver producing apparatus.

  And, in the laver storage tank that stores the harvested laver, the laver is stored while being stirred in the seawater by the stirring mechanism until it is brought into the dry laver production process. It was.

  However, in the above-mentioned laver storage tank, it takes about several hours to about 1 day from harvesting until it is carried into the dry laver production process. As a result, the freshness of the seaweed algae stored in the seaweed storage tank is reduced due to a decrease in the oxygen concentration of the seawater stored together with the seaweed raw algae. There was a possibility that the quality of the dried nori produced in the process would deteriorate.

Therefore, the present inventors connected a seawater storage tank for storing seawater to a laver storage tank for storing the seaweed original algae, and provided a seawater circulation channel for circulating the seawater stored in the seawater storage tank. The seawater circulation of the seaweed storage tank that circulates the seawater between the seaweed storage tank and the seawater storage tank by providing an oxygen supply device for supplying oxygen to the circulating seawater in the middle of the seawater circulation channel A system was devised (see Patent Document 1).
JP 2007-151500 A

  However, when the present inventors conducted extensive research on the seawater circulation system of the seaweed storage tank based on the actual machine, the oxygen concentration and salt concentration (specific gravity of seawater) of the circulating seawater decreased to a predetermined concentration or less. In this case, the pink pigment flows out from the seaweed algae into the seawater, and even if oxygen is supplied from the oxygen supply device to the seawater in that state, the oxygen does not dissolve well in the seawater, and the oxygen concentration in the seawater is reduced. It has proven difficult to increase to the desired concentration.

  In particular, when multiple seaweed storage tanks connected to the seawater storage tank are provided, if oxygen is concentrated and supplied only to the seawater in one of the seaweed storage tanks, the oxygen concentration in the seawater in the remaining seaweed storage tanks It has been found that the above-mentioned problem occurs due to a decrease in the time.

  Therefore, in the present invention according to claim 1, a seaweed storage tank that stores seawater is connected to a seaweed storage tank that stores seaweed raw algae, and seaweed that circulates seawater between the seaweed storage tank and the seawater storage tank. In the seawater circulation system of the storage tank, an oxygen supply device for supplying oxygen to the circulating seawater is provided, and a seawater replacement device for replacing the circulating seawater when the oxygen concentration of the seawater is below a predetermined concentration I made it.

  Moreover, in this invention which concerns on Claim 2, while connecting the seawater storage tank which stores seawater to the seaweed storage tank which stores a seaweed original algae, the seaweed which circulates seawater between these seaweed storage tanks and a seawater storage tank In the seawater circulation system of the storage tank, an oxygen supply device for supplying oxygen to the circulating seawater is provided, and a seawater replacement device for replacing the circulating seawater when the salt concentration of the seawater is equal to or lower than a predetermined concentration. I made it.

  Further, in the present invention according to claim 3, in the present invention according to claim 1 or 2, a seawater suction pipe and a seawater supply pipe are connected to the seaweed storage tank, and a seaweed storage is stored in the seawater supply pipe. The seawater inlets arranged at the upper and lower parts of the tank were formed, and the seawater was ejected in a mist form from the seawater inlet provided at the upper part.

  Further, in the present invention according to claim 4, in the present invention according to claim 3, a plurality of laver storage tanks are connected to the seawater storage tank via a seawater suction supply flow path, The seawater suction pipe and the seawater supply pipe of any one of the seaweed storage tanks are connected to each other via the seawater storage tank, and the seawater sucked from any one of the seaweed storage tanks is connected to the upper part of the seawater supply pipe via the seawater storage tank. And the seawater suction tank of the remaining seaweed storage tank by directly connecting the seawater suction pipe and the seawater supply pipe of the remaining seaweed storage tank to the seaweed storage tank. It was decided to supply the seawater sucked from the seawater inlet at the upper part of the seawater supply pipe of the remaining laver storage tank without going through the seawater storage tank.

  And in this invention, there exists an effect described below.

  That is, in this invention which concerns on Claim 1, while connecting the seawater storage tank which stores seawater to the seaweed storage tank which stores a seaweed original algae, the seaweed which circulates seawater between these seaweed storage tanks and a seawater storage tank In the seawater circulation system of the storage tank, an oxygen supply device for supplying oxygen to the circulating seawater is provided, and a seawater replacement device for replacing the circulating seawater when the oxygen concentration of the seawater is lower than a predetermined concentration Therefore, it is possible to prevent the pigment from flowing out from the seaweed algae into the seawater due to the decrease in oxygen concentration during the period of storing the seaweed algae in the seaweed storage tank. The oxygen concentration of the seawater stored together with the seaweed algae can be well maintained, thereby improving the freshness of the seaweed algae stored in the seaweed storage tank, and thus drying It is possible to improve the quality of the moss.

  Moreover, in this invention which concerns on Claim 2, while connecting the seawater storage tank which stores seawater to the seaweed storage tank which stores a seaweed original algae, the seaweed which circulates seawater between these seaweed storage tanks and a seawater storage tank In the seawater circulation system of the storage tank, an oxygen supply device for supplying oxygen to the seawater to be circulated is provided, and a seawater replacement device for replacing the circulating seawater when the salt concentration of the seawater is a predetermined concentration or less is provided. Therefore, it is possible to prevent the pigment from flowing out from the seaweed algae into the seawater due to the decrease in the salinity during the period of storing the seaweed raw algae in the seaweed storage tank. The oxygen concentration of the seawater stored with the seaweed original algae can be kept well, thereby improving the freshness of the seaweed raw algae stored in the seaweed storage tank, and consequently the dried seaweed It is possible to improve the quality.

  In the present invention according to claim 3, a seawater suction pipe and a seawater supply pipe are connected in communication with the seaweed storage tank, and a seawater inlet is formed in the seawater supply pipe at the upper part and the lower part of the seaweed storage tank. Since the seawater is discharged from the seawater inlet provided in the upper part in a mist, the seawater oxygen concentration inside the laver storage tank is reduced by supplying seawater from the upper and lower seawater inlets. In addition, by discharging seawater from the seawater inlet in the form of a mist, oxygen in the atmosphere can be supplied to the seawater along with the discharge of seawater to the seaweed storage tank. The oxygen concentration in the seawater inside the tank can be increased, and the freshness of the seaweed algae and the quality of the dried seaweed can be improved.

  In the present invention according to claim 4, a plurality of seaweed storage tanks are connected to the seawater storage tank via a seawater suction supply flow path, and the seawater suction supply flow path is connected to a seawater suction pipe of any one of the seaweed storage tanks. Seawater supply pipes are connected to each other through a seawater storage tank, and seawater sucked from any seaweed storage tank is stored in either seaweed from the upper and lower seawater inlets of the seawater supply pipe. The seawater suction pipe and the seawater supply pipe of the remaining seaweed storage tank are directly connected to each other while the seawater sucked from the seawater suction pipe of the remaining seaweed storage tank is not passed through the seawater storage tank. Since it is configured to supply from the seawater inlet at the top of the seawater supply pipe of the seaweed storage tank, the seawater inside the plurality of seaweed storage tanks can be circulated using a single seawater storage tank. All seaweed storage Since the oxygen concentration of seawater can be maintained satisfactorily, it is possible to freshness improving and drying quality of the laver of a large amount of seaweed raw algae.

  Below, the concrete structure of the seawater circulation system of the seaweed storage tank which concerns on this invention is demonstrated, referring drawings.

  As shown in FIG. 1, the seawater circulation system 1 stores a certain amount of seawater in a plurality (three in this case) of laver storage tanks 2, 3, and 4 for storing laver raw algae together with seawater. The seawater storage tank 5 is connected via a seawater suction supply flow path 6 so that the seawater is circulated between the laver storage tanks 2, 3, 4 and the seawater storage tank 5. .

  The seawater circulation system 1 is configured to connect the seawater circulation channel 7 to the seawater storage tank 5 to circulate the seawater stored in the seawater storage tank 5 and circulate in the middle of the seawater circulation channel 7. A seawater cooling device 8 for cooling the seawater to be circulated and an oxygen supply device 9 for supplying oxygen to the circulating seawater are provided in order from the upstream side of the circulating seawater.

  The seawater circulation system 1 is configured as shown in FIG. 1, and the seaweed storage tanks 2, 3, 4, the seawater storage tank 5, the seawater suction supply channel 6, and the seawater circulation channel that constitute the seawater circulation system 1. The specific structure of 7 will be described below.

  First, the structure of the seaweed storage tanks 2, 3, and 4 will be described. The seaweed storage tanks 2, 3, and 4 have the same structure, and the seaweed storage tank 2 has an upper portion as shown in FIGS. Is formed in a rectangular box shape with an opening.

  In this laver storage tank 2, a pair of left and right supports 12, 13 are installed between the upper central portions of the front and rear side walls 10, 11, and a stirring motor 14 is attached to the upper center of the supporting bodies 12, 13, and the stirring motor 14 is rotated. The moving shaft 15 hangs down toward the inside of the laver storage tank 2, and a plurality of stirring blades 16 are radially attached to the rotating shaft 15 with an interval in the vertical direction.

  As a result, the laver storage tank 2 can stir the nori seaweed stored by the stirring blade 16 by driving the stirring motor 14.

  The nori storage tank 2 has a box-shaped suction water tank 17 detachably attached to the corner, and a suction pump 18 is disposed inside the suction water tank 17. 6 seawater suction pipes 19 are connected.

  As shown in FIG. 4, the suction water tank 17 closes the side surface and bottom surface of the frame body 20 to form an opening 21 at the top, and a porous plate-like punching metal 22 is attached to the front surface. Hooks 23 and 24 are attached to 20. The suction water tank 17 is suspended from the edge of the nori storage tank 2 by hooks 23 and 24 so that it can be easily detached from the nori storage tank 2. Further, the punching metal 22 of the suction water tank 17 functions as a filter that sucks only seawater from the laver storage tank 2 so as not to suck the seaweed original algae. The suction water tank 17 can be easily removed from the nori seaweed clogged in the punching metal 22 by being removed from the nori storage tank 2.

  Moreover, as shown in FIG.2 and FIG.3, the seaweed storage tank 2 has attached the seawater supply pipe 25 of the seawater suction supply flow path 6 to the upper part. This seawater supply pipe 25 branches into an upper side pipe 26 and a lower side pipe 27 at the tip, and between the upper side pipe 26 and the lower side pipe 27, the seawater supply pipe 25 leads to the upper side pipe 26. A check valve 28 that prevents the inflow from the upper side pipe 26 to the seawater supply pipe 25, and further connects the upper side pipe 26 and the seawater suction pipe 19 via a three-way cock 29. Connected. Here, the three-way cock 29 is connected to a controller (not shown) so that the change of the flow path can be controlled by the controller.

  As a result, the three-way cock 29 is connected from the upstream side to the downstream side of the seawater suction pipe 19 so that the seawater sucked by the suction pump 18 is sucked from the seawater suction pipe 19 to the seawater storage tank 5. The seawater from the seawater storage tank 5 is supplied to the laver storage tank 2 from the upper side pipe 26 and the lower side pipe 27 of the seawater supply pipe 25 (see FIG. 8), while the three-way cock 29 is connected to the seawater suction pipe 19. By connecting to the upper side pipe 26 of the seawater supply pipe 25 from the upstream side, the seawater sucked by the suction pump 18 is supplied from the upper side pipe 26 of the seawater supply pipe 25 to the laver storage tank 2. (See FIG. 9 or FIG. 10.)

  Furthermore, the seaweed storage tank 2 is formed with a plurality of seawater inlets 30 for discharging seawater into the upper side pipe 26 in the form of a mist toward the inside of the seaweed storage tank 2 at intervals in the horizontal direction. 27 is suspended inside the laver storage tank 2 to form a seawater inlet 31 at the tip. Here, the seawater inlet 30 of the upper pipe 26 is arranged above the seawater surface of the laver storage tank 2, while the seawater inlet 31 of the lower pipe 27 is used for the seawater stored in the laver storage tank 2. Arranged inside.

  In this way, the seaweed storage tank 2 is connected with the seawater suction pipe 19 and the seawater supply pipe 25 of the seawater suction supply passage 6, and the seawater inside the seaweed storage tank 2 is sucked from the seawater suction pipe 19. At the same time, seawater is supplied into the seaweed storage tank 2 from the seawater supply pipe 25 so that the seawater inside the seaweed storage tank 2 is circulated.

  Next, the structure of the seawater storage tank 5 will be described. As shown in FIGS. 5 to 7, the seawater storage tank 5 has a rectangular shape in which an upper part is opened at a side of a rectangular box-shaped main body water tank 32 having an upper part opened. A box-shaped supply water tank 33 and a discharge water tank 34 are attached.

  Moreover, the seawater storage tank 5 forms a partition wall 35 inside the main body water tank 32, and the partition wall 35 divides the inside of the main body water tank 32 into an inflow side small water tank 36 and an outflow side large water tank 37. The inflow side small water tank 36 is formed with a seawater inlet 38 for flowing seawater from the laver storage tank 2, and the seawater inlet pipe 39 of the seawater suction supply passage 6 is connected to the seawater inlet 38. Further, a seawater inlet 40 for allowing seawater to flow from the oxygen supply device 9 is formed immediately below the seawater inlet 38 from the seaweed storage tank 2, and the seawater supply of the seawater circulation passage 7 is supplied to the seawater inlet 40. The pipe 41 is connected. A suction pump 42 is disposed at the bottom of the outflow side large water tank 37, and a seawater suction pipe 43 of the seawater circulation passage 7 is connected to the suction pump 42. Further, the outflow side large water tank 37 is formed with a seawater outlet 44 at the lower part, and the seawater outlet 44 is connected to the start end of the communication pipe 45 and the end of the communication pipe 45 is connected to the supply water tank 33. It is connected.

  In this way, the seawater storage tank 5 is connected to the main body water tank 32 with the seawater suction pipe 43 and the seawater supply pipe 41 of the seawater circulation channel 7, and the seawater stored in the main body water tank 32 is supplied with the suction pump 42. In addition to suction from the seawater suction pipe 43, seawater is supplied into the main body water tank 32 from the seawater supply pipe 41, and the seawater stored in the main body water tank 32 is circulated.

  Further, the seawater storage tank 5 forms a partition wall 46 inside the supply water tank 33, and the partition wall 46 partitions the inside of the supply water tank 33 into a storage water tank 47 and an overflow water tank 48. In the storage tank 47, a seawater inlet 49 is formed at the bottom, and a communication pipe 45 is connected to the seawater inlet 49. As a result, the seawater storage tank 5 connects the main body water tank 32 and the supply water tank 33 through the communication pipe 45. Further, a suction pump 51 is disposed inside the overflow water tank 48, and a seawater outflow pipe 52 of the seawater suction supply passage 6 is connected to the suction pump 51.

  The seawater storage tank 5 has a discharge port 53 formed at the bottom of the discharge water tank 34, and a discharge pipe 54 is connected to the discharge port 53.

  The seawater storage tank 5 has a foreign substance removal mechanism 55 attached to the upper part of the main body water tank 32 and the discharge water tank 34.

  This foreign matter removing mechanism 55 has rotating shafts 56, 57 installed above the main body water tank 32 and the discharge water tank 34, and sprockets 58, 59, 60, 61 are attached to both ends of the rotating shafts 56, 57. The interlocking chains 62 and 63 are wound around the 58, 59, 60 and 61, and the scraper 64 is installed between the interlocking chains 62 and 63 downward. In addition, the drive motor 65 is interlocked and connected via an interlocking mechanism 66. In the figure, reference numerals 67, 68, 69, 70 denote shaft supports.

  In this foreign matter removing mechanism 55, when the drive motor 65 is driven, the interlocking chains 62, 63 rotate, and accordingly, the scraper 64 moves on the water surface of the main body water tank 32 toward the discharge water tank 34, and the main body water tank 32 The foreign matter floating on the water surface is removed toward the discharge water tank 34.

  Next, the structure of the seawater suction supply channel 6 will be described. As shown in FIG. 1, the seawater suction supply channel 6 includes a seawater suction pipe 19 and a seawater storage tank communicating with the laver storage tanks 2, 3, and 4, respectively. The seawater suction pipe 72 is formed by connecting the seawater inflow pipe 39 communicating with the seawater 5 by the connection pipe 71, while the seawater outflow pipe 52 communicating with the seawater storage tank 5 and the laver storage tanks 2, 3, A seawater supply flow path 74 is formed by connecting and connecting the seawater supply pipe 25 communicating with 4 through a connection pipe 73.

  Further, the seawater suction supply channel 6 is provided with a seawater replacement device 75 for replacing the seawater inside in the middle of the seawater suction channel 72.

  The seawater replacement device 75 connects the drain pipe 77 to the middle part of the connection pipe 71 of the seawater suction passage 72 via the three-way cock 76 and also three-way to the middle part of the connection pipe 71 downstream of the three-way cock 76. A seawater tank 79 is connected via a cock 78, a salt supply device 80 is connected to the seawater tank 79, and a supply pipe 81 of the salt supply device 80 is connected to the main body water tank 32 of the seawater storage tank 5. Here, the seawater tank 79 stores fresh seawater having an oxygen concentration equal to or higher than a predetermined concentration. In addition, a controller (not shown) is connected to the three-way cocks 76 and 78 so that the change of the flow path can be controlled by the controller. The controller is connected to an oxygen concentration detection sensor 82 and a salinity concentration detection sensor 83 arranged inside the main body water tank 32 of the seawater storage tank 5, and the oxygen concentration of seawater is controlled by the controller by these sensors 82 and 83. And salinity can be detected. The oxygen concentration detection sensor 82 and the salinity concentration detection sensor 83 may be replaced with a color sensor that detects the concentration of the pigment in seawater.

  Then, when the seawater replacement device 75 detects that the oxygen concentration of the seawater is equal to or lower than the predetermined concentration by the oxygen concentration detection sensor 82, the seawater suction pipe 19 and the drainage pipe 77 are in communication with each other. In addition to discharging the seawater sucked from each laver storage tank 2, 3, and 4, the three-way cock 78 is in a state where the seawater tank 79 and the seawater inflow pipe 39 are in communication with each other, and fresh water with an oxygen concentration equal to or higher than a predetermined concentration is obtained from the seawater tank 79. Fresh seawater is supplied to the seawater storage tank 5. As a result, the seawater replacement device 75 replaces the seawater circulating between the laver storage tanks 2, 3, and 4 and the seawater storage tank 5 with seawater having an oxygen concentration equal to or higher than a predetermined concentration.

  In addition, when the seawater replacement device 75 detects that the salinity of the seawater is less than a predetermined concentration by the salinity concentration detection sensor 83, the seawater replacement device 75 sets the seawater suction pipe 19 and the drainage pipe 77 in communication. The seawater sucked from each laver storage tank 2, 3, 4 is discharged and seawater having a salt concentration of a predetermined concentration or more is supplied from the seawater tank 79 to the seawater storage tank 5 via the salt supply device 80. . As a result, the seawater replacement device 75 replaces the seawater circulating between the laver storage tanks 2, 3, and 4 and the seawater storage tank 5 with seawater having a salt concentration equal to or higher than a predetermined concentration.

  Further, the seawater suction supply channel 6 is provided with a sterilizer 84 in the middle of the seawater outflow pipe 52. This sterilizer 84 incorporates activated carbon and an ultraviolet irradiator, and decomposes and deodorizes and disinfects the organic matter in the seawater supplied to each laver storage tank 2, 3, 4 through the seawater outflow pipe 52. I have to.

  Further, the seawater suction supply channel 6 is provided with three-way cocks 85 and 86 in the middle of the connecting pipe 73 of the seawater supply channel 74 so that the seawater supply channel 74 is connected to each laver storage tank 2,3,4. Branches to a seawater supply pipe 25. Here, the three-way cocks 85 and 86 are connected to a controller (not shown) so that the change of the flow path can be controlled by the controller.

  Next, the structure of the seawater circulation channel 7 will be described. As shown in FIG. 1, the seawater circulation channel 7 connects the seawater cooling device 8 to the seawater suction pipe 43 connected to the seawater storage tank 5, and this A communication pipe 50 is connected to the seawater cooling device 8, an oxygen supply device 9 is connected to the communication pipe 50, a seawater supply pipe 41 is connected to the oxygen supply device 9, and the seawater storage tank 5 is connected to the seawater supply pipe 41. Connected. In addition, you may comprise the oxygen supply apparatus 9 so that ozone can be sterilized by supplying ozone in seawater.

  The seawater circulation channel 7 sucks the seawater inside the seawater storage tank 5 from the seawater suction pipe 43 and cools it to a predetermined temperature by the seawater cooling device 8, and oxygen is reduced to a saturated dissolution concentration by the oxygen supply device 9. It is supplied and returned to the inside of the seawater storage tank 5 again.

  The seawater circulation system 1 is configured as described above, the suction pump 18 provided in the laver storage tanks 2, 3, 4, the suction pumps 42, 51 provided in the seawater storage tank 5, and the seawater suction supply flow path. By driving and controlling the three-way cocks 29, 76, 78, 85, 86 provided in 6, seawater is circulated between the seaweed storage tanks 2, 3, 4 and the seawater storage tank 5, and the seawater storage tank 5 The internal seawater is circulated through the seawater cooling device 8 and the oxygen supply device 9.

  That is, the seawater stored with the seaweed original algae in the seaweed storage tanks 2, 3, and 4 is sucked by the suction pump 18, as shown in FIG. 1, and the seawater suction pipe 19, the seawater suction passage 72, the seawater inflow pipe It passes through 39 and flows into the inflow side small water tank 36 of the seawater storage tank 5. Thereafter, the seawater overflows the partition wall 35 and flows from the inflow-side small water tank 36 to the outflow-side large water tank 37, and at that time, the foreign matter removal mechanism 55 removes the foreign matter. Thereafter, the seawater stored in the outflow side large water tank 37 is sucked by the suction pump 42 and stored again through the seawater suction pipe 43, the seawater cooling device 8, the communication pipe 50, the oxygen supply device 9, and the seawater supply pipe 41. It flows into the inflow side small water tank 36 of the tank 5. Seawater stored in the outflow side large water tank 37 flows into the storage water tank 47 from the seawater outlet 44 through the communication pipe 45 due to water pressure, overflows the partition wall 46 and flows into the overflow water tank 48, and then It is sucked by the suction pump 51 and flows into the seaweed storage tanks 2, 3, 4 through the seawater outflow pipe 52, the seawater supply channel 74, and the seawater supply pipe 25.

  At that time, in the seawater circulation system 1 configured as described above, the seawater sucked from the seawater suction pipe 19 of any one of the laver storage tanks 2, 3, 4 is placed in the upper and lower portions of the seawater supply pipe 25 via the seawater storage tank 5. While supplying either of the seaweed storage tanks 2, 3, 4 from the seawater inlets 30, 31, the seawater sucked from the seawater suction pipe 19 of the remaining seaweed storage tanks 2, 3, 4 is not routed through the seawater storage tank 5. The remaining seaweed storage tanks 2, 3, and 4 can be supplied from the seawater inlet 30 at the upper part of the seawater supply pipe 25.

  That is, as shown in FIG. 8, the three-way cock 29 provided in the seaweed storage tank 2 is in a state of communicating from the upstream side to the downstream side of the seawater suction pipe 19, and the three-way cock provided in the seaweed storage tanks 3 and 4 29 is connected from the upstream side of the seawater suction pipe 19 to the upper side pipe 26 of the seawater supply pipe 25, and the three-way cock 85 provided in the seawater supply flow path 74 is connected to the seawater supply pipe of the laver storage tank 2 from the connection pipe 73. The seawater sucked from the seawater suction pipe 19 of the seaweed storage tank 2 is stored in the seawater storage tank 5 through the seawater inlets 30 and 31 at the upper and lower seawater supply pipes 25. While supplying the tank 2, the seawater sucked from the seawater suction pipe 19 of the remaining seaweed storage tanks 3 and 4 without passing through the seawater storage tank 5, the sea above the seawater supply pipe 25 of the remaining seaweed storage tanks 3 and 4 It can be supplied from the water inlet 30.

  Further, as shown in FIG. 9, the three-way cock 29 provided in the laver storage tank 3 is in communication with the seawater suction pipe 19 from the upstream side to the downstream side, and the three-way cock provided in the laver storage tanks 2 and 4. 29 is connected from the upstream side of the seawater suction pipe 19 to the upper side pipe 26 of the seawater supply pipe 25, and the three-way cocks 85 and 86 provided in the seawater supply channel 74 are connected to the seawater in the laver storage tank 3 from the connection pipe 73. By connecting to the supply pipe 25, the seawater sucked from the seawater suction pipe 19 of the laver storage tank 3 is passed through the seawater storage tank 5 from the upper and lower seawater inlets 30, 31 of the seawater supply pipe 25. While supplying the seaweed storage tank 3, the seawater sucked from the seawater suction pipes 19 of the remaining seaweed storage tanks 2, 4 is not passed through the seawater storage tank 5, and the upper part of the seawater supply pipe 25 of the remaining seaweed storage tanks 2, 4 It can be supplied from the seawater inlet 30.

  Further, as shown in FIG. 10, the three-way cock 29 provided in the seaweed storage tank 4 is in a state where it communicates from the upstream side to the downstream side of the seawater suction pipe 19, and the three-way cock provided in the seaweed storage tanks 2 and 3 29 is connected from the upstream side of the seawater suction pipe 19 to the upper side pipe 26 of the seawater supply pipe 25, and the three-way cocks 85 and 86 provided in the seawater supply channel 74 are connected to the seawater in the laver storage tank 4 from the connection pipe 73. By connecting to the supply pipe 25, the seawater sucked from the seawater suction pipe 19 of the seaweed storage tank 4 is passed through the seawater storage tank 5 from the seawater inlets 30 and 31 at the upper and lower parts of the seawater supply pipe 25. While supplying the seaweed storage tank 4, the seawater sucked from the seawater suction pipes 19 of the remaining seaweed storage tanks 2, 3 is not passed through the seawater storage tank 5, and the upper part of the seawater supply pipe 25 of the remaining seaweed storage tanks 2, 3 It can be supplied from the seawater inlet 30.

  Thus, in the seawater circulation system 1, the seawater storage tank 5 for storing seawater is connected to the seaweed storage tanks 2, 3, 4 for storing the seaweed raw algae, and the seaweed storage tanks 2, 3, 4 and the seawater Seawater is circulated with the storage tank 5, and a seawater circulation channel 7 for circulating the seawater stored in the seawater storage tank 5 is provided in the seawater storage tank 5. Since the oxygen supply device 9 for supplying oxygen to the circulating seawater is provided in the middle of the seaweed storage tank 2, the seaweed storage tank 2 is stored during the period in which the seaweed storage tanks 2, 3 and 4 store the seaweed raw algae. , 3 and 4 can prevent the oxygen concentration of the seawater stored together with the seaweed raw algae from falling, thereby reducing the freshness of the seaweed raw algae stored in the seaweed storage tanks 2 and 3 It is possible to improve the quality of the dried seaweed by producing dried seaweed using raw seaweed algae with improved freshness. Quality can be improved.

  In particular, since the seawater circulation system 1 includes the seawater replacement device 75 for replacing the seawater circulating when the oxygen concentration of the seawater is equal to or lower than a predetermined concentration, the seaweed storage tanks 2, 3, and 4 While the algae are stored, it is possible to prevent the pigment from flowing out from the seaweed algae into the seawater due to the decrease in oxygen concentration, and the seaweed storage tanks 2, 3 and 4 are stored together with the seaweed raw algae. Can keep the oxygen concentration of the seawater to be kept well, which can improve the freshness of the seaweed raw algae stored in the seaweed storage tanks 2, 3 and 4, and thus improve the quality of the dried seaweed Can be made.

  Further, in the seawater circulation system 1, since the seawater replacement device 75 for replacing the seawater circulating when the salinity of the seawater is below a predetermined concentration is provided, the seaweed storage tanks 2, 3, and 4 During the period of storage of algae, it is possible to prevent the pigment from flowing out into the seawater from the seaweed algae due to the decrease in salinity, and store it together with the seaweed algae in the seaweed storage tanks 2, 3, 4 Can keep the oxygen concentration of the seawater to be kept well, which can improve the freshness of the seaweed raw algae stored in the seaweed storage tanks 2, 3 and 4, and thus improve the quality of the dried seaweed Can be made.

  In the seawater circulation system 1, the seawater suction pipe 19 and the seawater supply pipe 25 are connected to the seaweed storage tanks 2, 3, 4 and the seawater supply pipe 25. Since the seawater inlets 30 and 31 arranged in the lower part are formed and the seawater is discharged from the seawater inlet 30 provided in the upper part in a mist form, the seawater inlets 30 and 31 from the upper and lower seawater inlets 30 and 31 The seawater oxygen concentration in the seaweed storage tanks 2, 3, and 4 can be increased uniformly throughout the seaweed storage tanks, and seawater can be stored by discharging seawater from the seawater inlet 30 in the form of a mist. Oxygen in the atmosphere can be supplied to the seawater along with the discharge of seawater to the tanks 2, 3, 4, and the oxygen concentration in the seawater inside the laver storage tanks 2, 3, 4 can be increased. The freshness of the original algae and the quality of the dried nori can be improved.

  In the seawater circulation system 1, a plurality of seaweed storage tanks 2, 3, 4 are connected to a seawater storage tank 5 via a seawater suction supply flow path 6, and the seawater suction supply flow path 6 is one of the seaweed storage tanks. The seawater suction pipe 19 and the seawater supply pipe 25 of the tanks 2, 3 and 4 are connected in communication via the seawater storage tank 5, and the seawater sucked from one of the laver storage tanks 2, 3, 4 is stored in the seawater storage tank 5. The seawater supply pipe 25 is supplied to one of the seaweed storage tanks 2, 3, and 4 from the seawater inlets 30, 31 at the lower part of the seawater supply pipe 25, while the seawater suction pipe 19 of the remaining seaweed storage tanks 2, 3, 4 And the seawater supply pipe 25 are connected in direct communication, and the seawater sucked from the seawater suction pipes 19 of the remaining seaweed storage tanks 2, 3, 4 are not passed through the seawater storage tank 5, Since it is configured to supply from the seawater inlet 30 at the top of the four seawater supply pipes 25, one seawater storage tank 5 is used to store a plurality of laver storage tanks 2, 3, and 4. Can circulate the seawater in the sea, and can maintain the oxygen concentration in the seawater in all the seaweed storage tanks 2, 3, 4 well, improving the freshness of large quantities of seaweed algae and improving the quality of dried seaweed Can be achieved.

Explanatory drawing which shows the seawater circulation system which concerns on this invention. Side surface sectional drawing which shows a seaweed storage tank. FIG. The perspective view which shows a suction water tank. The top view which shows a seawater storage tank. FIG. FIG. Explanatory drawing which shows operation | movement of a seawater circulation system. Explanatory drawing which shows operation | movement of a seawater circulation system. Explanatory drawing which shows operation | movement of a seawater circulation system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seawater circulation system 2,3,4 Laver storage tank 5 Seawater storage tank 6 Seawater suction supply flow path 7 Seawater circulation flow path 8 Seawater cooling device 9 Oxygen supply device 10,11 Side wall
12,13 Support 14 Stirring motor
15 Rotating shaft 16 Stirring blade
17 Suction water tank 18 Suction pump
19 Seawater suction pipe 20 Frame
21 Opening 22 Punching metal
23,24 Hook 25 Seawater supply pipe
26 Upper pipe 27 Lower pipe
28 Check valve 29 Three-way cock
30 Seawater inlet 31 Seawater inlet
32 Body tank 33 Supply tank
34 Drainage tank 35 Partition wall
36 Inlet small tank 37 Outlet large tank
38 Seawater inlet 39 Seawater inlet pipe
40 Seawater inlet 41 Seawater supply pipe
42 Suction pump 43 Seawater suction pipe
44 Seawater outlet 45 Communication pipe
46 Partition wall 47 Reservoir
48 Overflow tank 49 Seawater inlet
50 Communication pipe 51 Suction pump
52 Seawater outflow pipe 53 Outlet
54 Discharge pipe 55 Foreign matter removal mechanism
56,57 Rotating shaft 58,59,60,61 Sprocket
62,63 interlocking chain 64 scraper
65 Drive motor 66 Interlocking mechanism
67,68,69,70 Shaft support 71 Connecting pipe
72 Seawater suction channel 73 Connecting pipe
74 Seawater supply channel 75 Seawater replacement device
76 Three-way cock 77 Drain pipe
78 Three-way cock 79 Seawater tank
80 Salt supply unit 81 Supply pipe
82 Oxygen concentration sensor 83 Salinity sensor
84 Sterilizer 85,86 Three-way cock

Claims (4)

In the seawater circulation system of the seaweed storage tank that connects the seawater storage tank that stores seawater to the seaweed storage tank that stores the seaweed original algae and circulates the seawater between these seaweed storage tank and the seawater storage tank,
A seaweed storage tank provided with an oxygen supply device for supplying oxygen to the circulating seawater and a seawater replacement device for replacing the circulating seawater when the oxygen concentration of the seawater is lower than a predetermined concentration Seawater circulation system. In the seawater circulation system of the seaweed storage tank that connects the seawater storage tank that stores seawater to the seaweed storage tank that stores the seaweed original algae and circulates the seawater between these seaweed storage tank and the seawater storage tank,
A seaweed storage tank provided with an oxygen supply device for supplying oxygen to the seawater to be circulated and a seawater replacement device for replacing the seawater circulating when the salinity of the seawater is below a predetermined concentration Seawater circulation system.   A seawater suction pipe and a seawater supply pipe are connected in communication with the seaweed storage tank, and seawater inlets are formed in the seawater supply pipe at the upper and lower parts of the seaweed storage tank. The seawater circulation system for the laver storage tank according to claim 1 or 2, wherein the seawater is discharged in a mist form.   A plurality of seaweed storage tanks are connected to the seawater storage tank via a seawater suction supply flow path, and the seawater suction supply flow path connects a seawater suction pipe and a seawater supply pipe of one of the seaweed storage tanks through the seawater storage tank. The seawater sucked from any one of the seaweed storage tanks is supplied to the seaweed storage tank through the seawater storage tank from the upper and lower seawater inlets, while the remaining seaweed storage tanks The seawater suction pipe and seawater supply pipe of the seaweed storage tank are directly connected to each other, and the seawater sucked from the seawater suction pipe of the remaining seaweed storage tank is supplied through the seawater storage tank without passing through the seawater storage tank. The seawater circulation system for laver storage tanks according to claim 3, wherein the seawater circulation system is configured to supply from a seawater inlet at an upper part of the pipe.

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