JP2004222540A - Apparatus for culturing fishes or shellfishes - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for culturing fishes or shellfishes, which can automatically efficiently culture the fishes such as mackerels or porgies under a stable sea environment without relating to the changes in weather conditions. <P>SOLUTION: This apparatus for culturing fishes or shellfishes is formed by vertically disposing four steel supports 8a to 8d on base members 7 set to the sea bottom, fixing side nets 9 to 12 over the supports 8a to 8d, closing an opening over the upper portions of the side nets 9 to 12 with upper nets 13, 14, and disposing the upper nets 13, 14 at a depth of about 3 mm or more below the surface of the sea water. Thereby, the culture space is maintained in a stable environment without relating to the change in weather. A long guide hole 17 is formed in the upper nets 13, 14, and a feeding means 35 is moved along the long guide hole 17. Thereby, feeds can be supplied over the whole upper and lower culture spaces 26, 26a at a uniform flow rate. Mackerels, porgies, or the like, are cultured in the upper culture space 26, and crabs are cultured in the lower culture space 26a. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for cultivating fish such as mackerel, Thailand and the like, shellfish and crabs using the sea, lakes and marshes.
[0002]
[Prior art]
Traditionally, small-net seine fishing is similar to fixed netting, and uses multiple nets to capture fish. In view of the recent pollution situation of the sea, lakes and marshes, it is desired to cultivate fish and shellfish by using a net used for catching such fish. In the prior art, aquaculture of fish and shellfish becomes difficult due to severe fluctuations in the water surface due to typhoons and the like.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a fish and shellfish cultivation apparatus that can automatically cultivate fish and shellfishes in the sea, lakes and marshes.
[0004]
[Means for Solving the Problems]
The present invention provides a net that forms at least the periphery and the upper part of the cultivation space and is fixed to the seabed below about 3 m or more from the water surface,
And a feeding means for feeding food to the culture space.
[0005]
Further, the present invention is characterized in that a plurality of culture spaces are formed above and below by a partition net having a mesh through which bait passes and falls.
[0006]
The present invention also provides a base member installed on the sea floor,
A base end fixed to the base member, at least three rigid columns extending vertically,
A side net fixed between each strut,
An upper net which closes an upper portion of the side net, forms a culture space together with the side net, and is disposed about 3 m or more below the water surface,
A fish and shellfish cultivation apparatus characterized by including a feeding means arranged above the upper net and supplying feed to the upper part of the cultivation space.
[0007]
According to the present invention, a net is fixed to the bottom of a sea, a lake or the like, and feed is automatically supplied from a feeding means to a culture space formed by the net. The net is located about 3 m or more below the surface of the water, so the net is in stable water, regardless of weather conditions. Thereby, the fish and shellfish in the culture space can be cultured so as to surely grow in the culture space. In areas deeper than about 3 m from such water surface, the flow of water is not strong. It can be performed. According to the present invention, a measure of the feeding device due to the bad influence of the wave due to the typhoon or the like can be solved by a buoy method according to the willow theory of the wind. The feeding means can be angularly displaced by the float relative to the net fixed to the sea floor.
[0008]
According to the present invention, a plurality of cultivation spaces are vertically divided by a partition net, and food is supplied to the upper space by feeding means, so that food left over in the cultivation space above passes through the mesh of the partition net. And fall into the lower aquaculture space. In the lower aquaculture space, this falling bait is eaten by fish and shellfish, for example, by crabs.
[0009]
According to the present invention, a foundation member is installed at the bottom of a sea, a lake, or the like, and at least three, for example, four rigid columns are erected by the foundation member. Then, the side net is fixed, and the space surrounded by the side net is closed with the upper net to form a culture space. The lower part of the side net extends downward, for example, to about 10 cm from the sea floor, so that the fish during cultivation, such as mackerel and tie, escape to the outside even if the bottom net of the cultivation space is not provided. There is no. In another embodiment of the present invention, a bottom net may be provided below the side net.
[0010]
In the present invention, the upper net is formed with a guide slot along one direction,
A pair of lateral support members fixed to the column at both ends of the guide elongated hole in the one direction across the column, and extending perpendicularly to the guide elongated hole;
A cover net that is movable in the one direction and covers the guide slot, to which the feeding means is attached;
Both ends are fixed to each lateral support member, respectively, a long guide member that guides and moves the feeding means,
And a driving means for driving and moving the feeding means along the guide member.
[0011]
According to the present invention, the feeding means is moved along one direction to supply the bait into the aquaculture space into the guide slot formed in the upper net, and the guide slot is covered by the cover net. Therefore, the cultured seafood does not escape to the outside. The feeding means is guided and moved by a long guide member, for example, a rail or a rack, along the guide slot. In this way, the bait can be supplied to the culture space at a flow rate as uniform as possible.
[0012]
Also, in the present invention, the feeding means
The upper part is above the water surface, is a tubular shape extending vertically, and has a plurality of storage spaces of the same dimensions and shapes that are partitioned by a partition wall in the circumferential direction. A storage cylinder having a volume for storing the bait,
A rotary valve body that is provided at a lower portion of the storage cylinder and is provided so as to be angularly displaceable about a vertical axis and has an opening that opens and closes a lower end of a single storage space;
Valve body driving means for driving the rotary valve body by angular displacement by the amount of each storage space,
A supply pipe fixed to the rotary valve body, extending downward from the opening, and fitted into the guide elongated hole.
[0013]
According to the present invention, as shown in FIGS. 6 to 9 described later, the bait for each supply of the bait in the storage cylinder is supplied by dropping from the supply pipe to the culture space through the opening of the rotary valve body. You. The storage cylinder is circumferentially partitioned by a partition wall, and the upper part of the storage cylinder is above the water surface, and therefore, each of the plurality of storage spaces of the storage cylinder is individually opened by the opening of the rotary valve body, Therefore, there is no danger of water entering the storage space in which the bait is stored and kept closed by the rotary valve body when the bait is supplied from the storage space of another storage cylinder. As a result, for example, there is no possibility that the solid bait is degraded due to water deterioration.
[0014]
Also, in the present invention, the feeding means
The upper part is above the water surface, is a tubular shape extending up and down, and a storage tube in which bait is stored,
Pump means connected to the lower part of the storage cylinder, the pump means
A flexible bag body in which the pump chamber expands elastically;
An inlet check valve interposed between the lower part of the storage cylinder and the upper part of the bag body,
An outlet check valve provided at the lower part of the bag body,
Reciprocating compression means for reciprocatingly compressing the side portion of the bag,
A supply pipe extending downward from the outlet check valve and fitting into the guide slot.
[0015]
According to the present invention, as shown in FIGS. 10 and 11 described below, pump means is connected to the lower part of the storage cylinder storing the food for a plurality of times, and the flexible bag is resiliently moved. When the pump chamber is expanded by force, the solid bait, for example, in the storage cylinder is drawn into the pump chamber via the inlet check valve, while the outlet check valve remains closed. Next, when the bag is compressed by the reciprocating compression means, the outlet check valve is opened with the inlet check valve closed, and the food in the pump chamber is dropped and supplied to the culture space. At this time, the water in the pump chamber does not enter the storage cylinder due to the closing of the inlet check valve, and therefore, there is no risk that the food in the storage cylinder will be altered or deteriorated by the water.
[0016]
In the present invention, the reciprocating compression means includes:
One end is joined by a pin having a vertical axis, a holding member for holding the side of the bag body,
A nut member provided at the other end of each holding member so as to be angularly displaceable about an axis parallel to the vertical axis,
A screw rod commonly screwed to the nut member, and a screw rod in which each nut member is screw-driven in an approaching direction and a separating direction by rotation around the axis of the screw rod,
It is characterized by including a screw rod and screw driving means for driving forward and reverse rotation.
[0017]
According to the present invention, the means for reciprocatingly compressing the bag body of the pump means rotates the screw rod by screw driving means such as a motor, and a pair of nut members screwed to the screw rod opens and closes the holding member, As a result, the holding member is compressed against the resilience of the bag, and the bag is expanded by the resilience. Thus, the feed in the storage cylinder is supplied to the culture space via the pump means by the forward / reverse drive of the screw drive means.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a simplified perspective view of a fish and shellfish culturing apparatus 1 according to one embodiment of the present invention. This aquaculture apparatus 1 is fixedly installed on the bottom 2 of the sea, for example.
[0019]
FIG. 2 is a simplified cross-sectional view of the sea 3 where the aquaculture device 1 shown in FIG. 1 is installed. An embankment 4 is formed on the shore, and an inclined bottom 2 having a depth D1 within a distance L1 from the embankment 4 exists. For example, L1 = 700 m and D1 = 70 to 80 m. The aquaculture apparatus 1 is arranged so that its upper net 6 exists below the water surface 5 by a depth L2. This depth L2 is, for example, not less than about 3 m and may be less than about 10 m, so that aquaculture can be performed in a stable environment of seawater even if the water surface 5 has a large wave due to weather conditions. Can be.
[0020]
FIG. 3 is a longitudinal sectional view of the culture device 1 as viewed from the front, FIG. 4 is a longitudinal sectional view of the culture device 1 as viewed from the side, and FIG. 5 is a simplified perspective view of the culture device 1. . On the seabed 2, three or more, for example, four base members 7 in this embodiment are installed and fixed. The base member 7 is arranged at a vertex position of a rectangle in the water surface. The base end of a rigid column extending vertically is fixed to each base member 7. The column 8 may be made of metal such as iron, for example. A pair of front and rear side nets 9 and 10 and another pair of left and right side nets 11 and 12 are fixed to be detachable and replaceable between the columns 8. The upper portions of the four side nets 9 to 12 are closed by upper nets 13 and 14. Thus, a culture space 15 is formed by the side nets 9 to 12 and the upper nets 13 and 14. The distance L3 between the lower part of the side nets 9 to 12 and the bottom 2 is, for example, 5 to 10 cm to prevent fish and shellfish cultured in the culture space 15 from going out of the culture space 15. Can be. A bottom net may be further detachably attached to the lower part of the side walls 9 to 12. These nets 9 to 14 may be made of metal such as iron, or may be made of hemp yarn, yarn made of synthetic fiber, or made of other materials.
[0021]
A long guide hole 17 is formed in the upper nets 13 and 14 along one direction 16. At both ends in the one direction 16, the horizontal support members 21 and 22 are fixed over the upper portions of the pair of side nets 11 and 12, and thus between the pair of columns 8 a and 8 c and between the columns 8 b and 8 d. , 22 form a pair and are perpendicular to the one direction 16 in which the guide slot 17 extends. The cover net 23 has flexibility, covers the guide slot 17, and is movable on the upper walls 13, 14 in the one direction 16. The cover net 23 is wound around guide rollers 24 and 25 provided inside the pair of lateral support members 21 and 22 and hangs down in the culture space 26. Weights 27 and 28 are provided at both ends of the cover net 23, whereby tension acts on the cover net 23, so that the guide slot 17 can be reliably covered. Floats 29 to 32 are provided on the water surface 5. These floats 29 to 32 are rigid, have a rectangular shape in a horizontal plane, and are connected to the upper part of the column 8 by the cords 33. The reference numerals of the components may be denoted by subscripts a to d of the numerals, and may be indicated by only the numerals as a whole.
[0022]
Feeding means 35 is provided to insert the cover net 23 and feed the food from the elongated guide hole 17 into the culture space 26.
[0023]
FIG. 6 is a sectional view of the feeding means 35, and FIG. 7 is a simplified exploded perspective view of the feeding means 35 shown in FIG. In the feeding means 35, a rotary valve body 38 is provided below the storage cylinder 37, the rotary valve body 38 is angularly displaced around a vertical axis by a valve body driving means 39, and the cover net 29 is inserted through the supply pipe 41. Feed is supplied from the hole 42 to the culture space 26 through the guide slot 17. The storage cylinder 37 is formed in a vertically cylindrical shape having a vertical axis and extending vertically, and an upper portion 43 thereof is above the water surface 5. In the storage cylinder 37, a plurality of storage spaces 45 having the same dimensions and shapes are formed by a plurality of partition walls 44 extending in the circumferential direction and up and down. The upper end of the partition wall 44 is provided below the upper portion 43 of the storage tube 37 by a distance H1. Thus, when, for example, granular solid food is supplied from above the upper portion 43 of the storage cylinder 37, the same amount of food for each feeding is easily stored and stored in each storage space 45 having the same volume. be able to. The lower end of the partition wall 44 is in the same virtual plane as the lower part 46 of the storage tube 37. The straight cylindrical portion 52 is relatively displaceable with respect to the insertion hole 42, and even if the water surface 5 fluctuates due to a typhoon or the like, the feeding means 35 operates the cover net 23 having the insertion hole 42 and the upper net 13. , 14 can be angularly displaced. The guide flange 54 and the pair of guide members 55 are gently pinched and connected so as to allow such angular displacement.
[0024]
The rotary valve body 38 is provided at a lower portion 46 of the storage cylinder 37 so as to be angularly displaceable about a vertical axis. An opening 48 is formed in the rotary valve body 38. The opening 48 serves to open the lower end of the single storage space 45 and close all remaining storage spaces 45. A supply pipe 41 having a hollow inverted conical portion 51 and a straight cylindrical portion 52 is fixed to a lower portion of the rotary valve body 38. The straight cylindrical portion 52 extends downward through the insertion hole 42 and the guide slot 17. A circular annular guide flange 54 is fixed to the straight cylindrical portion 52 with a vertical interval. A pair of long guide members 55 are fitted into the guide flanges 54, whereby the feeding means 35 can reciprocate in the one direction 16 of the guide long holes 17 along the guide members 55.
[0025]
An external gear 56 is fixed to the rotary valve body 38, and a driving gear 57 meshes with the gear 56, and is driven to rotate by a motor reciprocating drive source 58. Thus, the opening / closing operation for each storage space 45 of the rotary valve body 38 is performed. A rack 59 is provided on the guide member 55, and a pinion 60 meshes with the rack 59 and is driven by a drive source 61 including a motor and the like. In this way, the movement driving means 62 can move the feeding means 35 in the one direction 16 during feeding. The guide member 55 is fixed and supported by the lateral support members 21 and 22.
[0026]
FIG. 8 is a block diagram showing an electrical configuration of the embodiment of the present invention shown in FIGS. The operation of the processing circuit 62 realized by the microcomputer is controlled by the input means 61 operated by the operator, whereby the processing circuit 62 controls the drive source 58 of the valve drive means 39 and the drive source 61 of the movement drive means 62. Drive control. The floats 29 to 32 are arranged along the one direction 16 so that the feeding means 35 is allowed to move in the one direction 16 above the upper wall 13 as clearly shown in FIG. 30 is formed longer than the guide slot 17.
[0027]
FIG. 9 is a flowchart for explaining the operation of the processing circuit 62 shown in FIG. In the state where the automatic feeding is performed by the operation of the input means 61 and the aquaculture is automated, in step s1, the feeding means 35 is arranged on one end side of the guide slot 17 in the one direction 16 and the driving source 61 is set in advance. While being driven for the predetermined time W1, the driving source 58 of the valve body driving means keeps the single storage space 45 open in step s2. Thus, during the time W1 during which the support means 35 moves from one end of the guide slot 17 to the other end, the bait is supplied from the single storage space 45 opened by the opening 48 of the rotary valve body 38. In this manner, the feeding is performed while the feeding means 35 is moved in the one direction 16, so that the feeding can be supplied into the culture space 26 at a substantially uniform flow rate. In another embodiment of the present invention, the cultivation space 16 may be provided with bottom nets 64 and 65, and thereby divided into two upper and lower cultivation spaces. In the cultivation space 26 above the partition net 64, for example, fish such as mackerel and Thailand are cultivated, and another lower cultivation space 26a between the partition net 64 and the bottom net 65 is cultivated for crab, shellfish and the like. It can be performed. For crabs and shellfish, the food left over in the upper culture space 26 falls through the partition net 64, and thus the food can be effectively used. Further, the leftover food and feces fall through the bottom net 65, and the upper and lower culture spaces are always kept clean.
[0028]
In another embodiment of the present invention, the partition net 64 may be omitted, and only the bottom net 65 may be provided.
[0029]
FIG. 10 is a simplified perspective view of a feeding means 35a according to another embodiment of the present invention. The upper part 73 of the straight cylindrical storage cylinder 72 in which the bait is stored is above the water surface 5, and the storage cylinder 72 extends vertically. Pump means 75 is connected to the hollow truncated cone 74 at the bottom of the storage cylinder 72.
[0030]
The pump means 75 is provided at a lower portion of the bag 76, an inlet check valve 77 interposed between a lower portion of the hollow truncated cone 74 constituting the storage cylinder 72 and an upper portion of the bag 76. An outlet check valve 78, reciprocating compression means 79 for reciprocatingly compressing the side of the bag body 76, and a supply pipe 81 extending downward from the outlet check valve 78 and fitted into the guide slot 17. The bag body 76 forms a pump chamber 82, expands by elastic force, and has flexibility. The inlet check valve 77 allows the food in the storage cylinder 72 to fall and be supplied to the pump chamber 82 when the pump chamber 87 below the inlet check valve 77 has a negative pressure as compared with the upper side. Conversely, when the pressure in the pump chamber 82 becomes higher than the pressure above the inlet check valve 77, the pump chamber 82 closes, thereby preventing water from entering the storage cylinder 72, and improving the quality of the food by water. To prevent deterioration and deterioration. The outlet check valve 78 opens when the pressure in the pump chamber 82 becomes larger than below the outlet check valve 78, and the pressure in the pump chamber 82 becomes smaller than the water pressure below the outlet check valve 78. Close when
[0031]
FIG. 11 is a simplified horizontal sectional view of the reciprocating compression means 79 in the embodiment shown in FIG. One ends in the longitudinal direction of the pair of holding members 85 and 86 are mutually coupled by a pin 87 so as to be angularly displaceable. The axis of the pin 87 extends in the vertical direction. The holding members 85 and 86 hold the side of the bag body 76. The pin 87 is fixed to the storage cylinder 72 by a mounting member 98. Nut members 88 and 89 are provided at the other ends of the holding members 85 and 86.
[0032]
The movement driving means 61 is rotatable forward and backward, and moves from the other end in the one direction 16 to the one end in the next feeding operation. Other operations and configurations of FIGS. 10 and 11 are the same as those of the above-described embodiments of FIGS. The feeding means 35 can be realized by not only the above-described embodiment but also other configurations.
[0033]
FIG. 12 is a perspective view of the nut member 88 shown in FIG. The nut member 88 is provided at the other end of the holding member 85 by a pair of support shafts 92 and 93 so as to be angularly displaceable. The axes of the support shafts 92 and 93 are on a common straight line, and the common straight line 94 and the axis of the pin 87 are together with the axis of the bag body 76 in an imaginary plane including the plane of FIG. Perpendicular to A nut member 89 provided at the one end of the sandwiching member 86 is also configured similarly to the nut member 88. A threaded bar 95 is screwed into these nut members 88 and 89, and is driven to rotate by a drive source 96 including a motor.
[0034]
The motor 96 is fixed to the storage cylinder 72 by the mounting member 88. The threaded rod 95 has external threads that are screwed into the nut members 88 and 89, and the directions of the external threads are opposite to each other, so that the threaded rod 95 is driven to rotate about its axis by the driving source 96. As a result, the nut members 88 and 89 are displaced toward each other or away from each other. When the nut members 88 and 89 are displaced close to each other, the side portion of the bag body 76 is compressed and displaced as indicated by the reference numeral 99 against its elastic force, and the bait in the pump chamber 80 is discharged from the outlet check valve 78. The water is supplied to the cultivation space 26 through the supply pipe 81, the insertion hole 42 of the cover net 23 and the guide elongated hole 17. When the nut members 88 and 89 are displaced in the separating direction, the bag body 76 expands the pump chamber 82 by its elastic force, and is supplied to the pump chamber 82 from the inlet check valve 77 by dropping. By repeating such an operation, it is possible to set a plurality of feed amounts each time.
[0035]
The supply pipe 81 is provided with a guide flange 54 similar to that of the above-described embodiment, is movable along the longitudinal guide member 55, and further includes a rack 59, a pinion 60, and a drive source 61 for driving the pinion 60. Driving means 62 is provided. The electrical configuration in the embodiment shown in FIGS. 10 and 11 is similar to the configuration in FIGS. 8 and 9 described above, and the processing circuit 62 replaces the drive source 58 of the valve body drive unit with the drive unit for the pump unit. Source 96 is controlled. Also, instead of the valve opening operation in step s2 in FIG. 9, the forward / reverse drive of the pump means drive source 96 is performed, and the feed amount for one time is performed while the feed means 35a is running.
[0036]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it becomes possible easily to automatically cultivate seafood in the sea, lakes and marshes. The aquaculture space is provided about 3 m or more below the surface of the water, so that aquaculture can be carried out in stable water regardless of climatic changes. This allows fish and shellfish to be cultivated efficiently.
[Brief description of the drawings]
FIG. 1 is a simplified perspective view of a fish and shellfish culturing apparatus 1 according to an embodiment of the present invention.
FIG. 2 is a simplified cross-sectional view of the sea 3 where the aquaculture device 1 shown in FIG. 1 is installed.
FIG. 3 is a longitudinal sectional view of the culture device 1 as viewed from the front.
FIG. 4 is a longitudinal sectional view of the culture device 1 as viewed from the side.
5 is a simplified perspective view of the culture device 1. FIG.
6 is a sectional view of the feeding means 35. FIG.
FIG. 7 is a simplified exploded perspective view of the feeding means 35 shown in FIG.
FIG. 8 is a block diagram showing an electrical configuration of the embodiment of the present invention shown in FIGS. 1 to 7;
FIG. 9 is a flowchart for explaining the operation of the processing circuit 62 shown in FIG. 8;
FIG. 10 is a simplified perspective view of a feeding means 35a according to another embodiment of the present invention.
11 is a simplified horizontal sectional view of the reciprocating compression means 79 in the embodiment shown in FIG.
FIG. 12 is a perspective view of a nut member 88 shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Aquaculture apparatus 2 Sea 3 Bottom 5 Water surface 6,13,14 Upper net 7 Base members 8,8a, 8b, 8c, 8d Posts 9,10,11,12 Side net 15,26 Culture space 16 One direction 17 Guide length Holes 21 and 22 Lateral support member 23 Cover net 35 Feeding means 37 Storage cylinder 38 Rotating valve body 39 Valve body driving means 41, 81 Supply pipe 43 Upper part 44 Partition wall 45 Storage space 46 Lower part 48 Opening 55 Guide member 64 Partition net 72 Storage tube 75 Pump means 76 Bag body 77 Inlet check valve 78 Outlet check valve 79 Reciprocating compression means 82, 87 Pump chamber 85, 86 Nipping member 87 Pin 88, 89 Nut member 95 Screw rod

Claims (7)

A net that forms at least the periphery and upper part of the aquaculture space and is fixed to the bottom of the sea below about 3 m from the water surface,
And a feeding means for feeding food to the culture space. The fish and shellfish cultivation apparatus according to claim 1, wherein a plurality of cultivation spaces are vertically formed by a partition net having a mesh through which bait passes and falls. Foundation members installed on the sea floor,
A base end fixed to the base member, at least three rigid columns extending vertically,
A side net fixed between each strut,
An upper net which closes an upper portion of the side net, forms a culture space together with the side net, and is disposed about 3 m or more below the water surface,
And a feeder disposed above the upper net and supplying food to an upper part of the culture space. In the upper net, a guide slot is formed along one direction,
A pair of lateral support members fixed to the column at both ends of the guide elongated hole in the one direction across the column, and extending perpendicularly to the guide elongated hole;
A cover net that is movable in the one direction and covers the guide slot, to which the feeding means is attached;
Both ends are fixed to each lateral support member, respectively, a long guide member that guides and moves the feeding means,
4. The fish and shellfish cultivation apparatus according to claim 3, further comprising a driving unit that moves and drives the feeding unit along the guide member. The feeding means
The upper part is above the water surface, is a tubular shape extending vertically, and has a plurality of storage spaces of the same dimensions and shapes that are partitioned by a partition wall in the circumferential direction. A storage cylinder having a volume for storing the bait,
A rotary valve body that is provided at a lower portion of the storage cylinder and is provided so as to be angularly displaceable about a vertical axis and has an opening that opens and closes a lower end of a single storage space;
Valve body driving means for driving the rotary valve body by angular displacement by the amount of each storage space,
The fish culture apparatus according to claim 4, further comprising a supply pipe fixed to the rotary valve body, extending downward from the opening, and fitted into the guide elongated hole. The feeding means
The upper part is above the water surface, is a tubular shape extending up and down, and a storage tube in which bait is stored,
Pump means connected to the lower part of the storage cylinder, the pump means
A flexible bag body in which the pump chamber expands elastically;
An inlet check valve interposed between the lower part of the storage cylinder and the upper part of the bag body,
An outlet check valve provided at the lower part of the bag body,
Reciprocating compression means for reciprocatingly compressing the side portion of the bag,
The fish culture apparatus according to claim 4, further comprising a supply pipe extending downward from the outlet check valve and fitted into the guide slot. Reciprocating compression means,
One end is joined by a pin having a vertical axis, a holding member for holding the side of the bag body,
A nut member provided at the other end of each holding member so as to be angularly displaceable about an axis parallel to the vertical axis,
A screw rod commonly screwed to the nut member, and a screw rod in which each nut member is screw-driven in an approaching direction and a separating direction by rotation around the axis of the screw rod,
7. The fish and shellfish cultivation apparatus according to claim 6, further comprising: a screw rod;

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