KR102407391B1 - Apparatus for switching culture tank to bio-filtering tank and recirculative filtering system using thereof - Google Patents

Abstract

According to the present invention, a rotation distribution unit is mounted or suspended on a device base disposed upright on the outside of the water level control tube in the center of the aquaculture tank or on a radial hanger frame that extends obliquely upward from the water tank wall of the aquaculture tank, and the rotation distribution The live fish water injection pipe and the air injection line are respectively connected to the upper side of the unit, and the first branch pipe and the first branch line extending in the horizontal direction to a position adjacent to the water tank wall are respectively connected to the side part of the first branch, A second branch pipe and a second branch line extending to a position adjacent to the tank bottom of the aquaculture tank are connected to the engine and the first branch line, respectively, and at the lower end of the second branch pipe and the second branch line, injection and An aeration propulsion unit is installed for mass formation of microbubbles, and a part of the live fish water discharged from the aquaculture tank is recovered and pumped to the live fish water injection pipe. By arranging the movable unit that rotates the unit together on the outside of the aquaculture tank, the aquaculture tank can be used as a high-performance biological filter tank without any structural changes to the already installed aquaculture tank. It relates to a water tank conversion device and a circulation filtration system using the same, which significantly reduces the burden of time and cost and space constraints due to additional installation, and enables efficient and economical re-operation and management of the circulation filtration system.

Description

A tank conversion device for using an aquaculture tank as a biological filtration tank and a circulation filtration system using the same

The present invention provides a biological filtration treatment of live fish water by agitation of a microbial filtration medium in the aquaculture tank installed in an indoor aquaculture farm on land, without changing the basic configuration consisting of the tank wall, the tank bottom, and the water level control tube on the central side. It relates to a water tank conversion device and a circulation filtration system using the same, which can be easily converted to a biological filter tank capable of collecting and removing various foreign substances by air and bubble components and ensuring sufficient dissolved oxygen.

In general, in land farms, a relatively large amount of fish are bred at a high density based on the quantity of live fish input into the aquaculture tank installed in a limited indoor space and each tank, and in this breeding environment, As a result, not only various solids such as feed scraps or fish excrement, but also protein components, ammonia components, and carbon dioxide as organic substances generated during the metabolic process of fish accumulate at a very high rate, and live fish water is easily contaminated.

Therefore, it is required to maintain the water quality at a certain level through filtration of the contaminated breeding water discharged from each aquaculture tank, and to prevent water pollution of nearby rivers or coastal waters due to the discharge water from the farm. For this purpose, in an on-land indoor aquaculture farm, the breeding water discharged from each aquaculture tank is introduced into the water collection settling tank to perform sedimentation removal of solids contained in breeding water and degassing of carbon dioxide, and then the supply pump A circulation filtration system has been applied to re-supply to each aquaculture tank through the provided piping line.

However, the conventional circulating filtration system using only the water collection and sedimentation tank could not effectively remove the protein component and ammonia component in the breeding water, and among them, in the case of ammonium nitrogen, nonionic ammonia (NH ₃ ) or ionic ammonia ( NH ₄ ⁺ ) combined with NH ₃ -N and NH ₄ ⁺ -N are distributed in two forms, and ammonia nitrogen combined with nonionic ammonia passes through the cell wall of fish and has a low concentration of 2 mg/L (2 ppm). It not only causes fatal toxicity and damage to farmed fish, but also depletes dissolved oxygen in the water as it is oxidized to nitrite or nitrate nitrogen.

Due to the above factors, in an on-land indoor aquaculture farm newly installed recently, a solids filtering device for removing solids in the breeding water discharged from the aquaculture tank and degassing carbon dioxide, etc. from the breeding water, and the solids filtering device A biological filtration tank that removes ammonia and nitrogen components in the supplied breeding water by microorganisms, and collects and removes the protein components in the breeding water with bubbles, is installed together with the aquaculture tank to form a circulating treatment system for live fish water.

As described above, the biological filtration tank used for indoor aquaculture on land passes a certain amount into the aeration tank in which a large amount of microbial filtration medium is input, and ammonia and nitrogen components contained in the breeding water are removed in the metabolic process of microorganisms. , A bubble disperser and a skimmer are additionally installed inside the aeration tank to collect and remove protein components in the bubble form along with the supply of oxygen necessary for the reaction of these microorganisms and degassing of carbon dioxide. do.

However, in the case of an indoor aquaculture that has already been used in a state where the facility has already been completed, unlike the recently newly installed onshore indoor aquaculture farm, the water collection sedimentation tank can be used as a solids filtering device, but in the case of a biological filter tank, it is Since it must be additionally installed in the space, it is difficult to secure the space necessary for the additional installation of a biological filter tank in a narrow indoor space where multiple aquaculture tanks are installed together with complex piping lines, A large-scale adjustment operation takes a considerable period of time, and since normal operation of the farm is impossible during that period, there is a problem that causes a considerable economic burden on small-scale aquaculturers.

In particular, in the case of a biological filtration tank, a large amount of pumped water is required during operation, and a certain amount of breeding water has to be pumped into the biological filtration tank regardless of the density of fish put into the aquaculture tank. In order to install a filtration tank, the height of the aeration tank is raised according to the amount of pumped water, or a deep pit is formed at the bottom of the farm to allow the aeration tank to enter the pit. Even after the biological filter tank was installed, there was a problem that there were many difficulties in the operation of the filtration medium and the management of filtration efficiency. will run into the same problem.

On the other hand, if the amount of pumped water to the biological filtration tank cannot be sufficiently secured due to the space constraint inside the farm, the quantity of live fish input to the tank and the density of farmed fish must also be adjusted accordingly, resulting in a decrease in productivity. In the newly installed onshore indoor aquaculture farm, the circulation filtration system centered on the aquaculture tank was not established, and a circulation filtration system tailored to the treatment capacity of the biological filter tank was established. And there was a problem that the composition of the production system was rather difficult.

Republic of Korea Patent Publication No. 10-2021-0125231 Republic of Korea Patent Registration No. 10-1247990

The present invention has been devised to solve the problems of the prior art as described above, and is a device pedestal disposed upright on the outside of the water level control tube in the center of the aquaculture tank or a radial hanger frame extending obliquely upward from the tank wall of the aquaculture tank. A first branch pipe extending in the horizontal direction to a position adjacent to the water tank wall on the side of the first branch pipe, on the other hand, by placing or hanging the rotation distribution unit on the and a first branch line, respectively, and to the first branch pipe and the first branch line, a second branch pipe and a second branch line extending to a position adjacent to the tank bottom of the aquaculture tank are respectively connected, and the second branch An aeration propulsion unit is installed at the bottom of the engine and the second branch line for the injection of live fish water and mass formation of microbubbles. By arranging the movable unit that rotates the branch pipe, branch line, and aeration propulsion unit together around the rotation distribution unit outside the aquaculture tank, the aquaculture tank can be used as a biological filtration tank with excellent performance without any structural changes to the installed aquaculture tank. Its main technical task is to provide a water tank conversion device and a circulation filtration system using the same.

As a means for solving the above technical problem, the water tank switching device according to the first embodiment of the present invention includes a device support installed upright in a manner that surrounds the water level control tube in the center of the aquaculture tank from the outside, and an upper surface of the device support a rotation distribution unit disposed on the , a live fish water injection pipe and an air injection line connected to the upper surface of the rotation distribution unit, respectively, and extending in the horizontal direction from the side portion of the rotation distribution unit to a position adjacent to the water tank wall of the aquaculture tank At least one first branch pipe and a first branch line, and at least two second branch pipes each extending vertically downward from the first branch pipe and the first branch line to a position adjacent to the tank bottom of the aquaculture tank; In a state where the second branch line, the second branch pipe and the second branch line are paired one by one, the aeration propulsion unit is connected and installed at the lower end of the branch pipe and the branch line, and live fish water is injected into the live fish water injection pipe. It is made by including a movable unit for making the water level control pipe, and the device base is provided with at least three support legs connected and installed along the lower surface edge of the mounting plate disposed on the upper side of the water level control pipe, and the lower side of each support leg is It is placed on the bottom side of the water tank along the circumferential direction of the water level control pipe, and the rotation distribution unit is installed axially on the upper surface of the apparatus base together with the first branch pipe and the first branch line to be axially rotatable, while the live fish water injection pipe and the The live fish water and compressed air supplied through the air injection line are guided to a first branch pipe and a first branch line, respectively, and the aeration propulsion unit is a second branch pipe and a second branch pipe from the first branch pipe and the first branch line. By using the injection pressure of live fish water and compressed air respectively supplied through the branch line, the injection propulsion force required for shaft rotation of the rotary distribution unit and bubbles necessary for aeration of live fish water are created, and the movable unit is connected to the water level control pipe. A live fish recovery pipe branching from a live fish water discharge pipe extending to the outside of the aquaculture tank, a recovery tank to which the live fish recovery pipe is connected and installed, and an injection for pumping the live fish water stored in the recovery tank to the outside A pump and a lower portion of the recovery tank are provided comprises a settling hopper, a drain pipe connected to the lower end of the settling hopper, and a valve mechanism installed on the drain pipe, and the live fish water injection pipe is from the recovery tank of the movable unit through the injection pump through the rotation distribution unit. It is characterized in that it extends to the side.

In addition, the water tank switching device according to the second embodiment of the present invention, instead of using the device base of the first embodiment, extends from the upper end of the tank wall of the aquaculture tank to the center of the aquaculture tank by a predetermined angle upward. At least two or more radial hanger frames are used so that the rotation distribution unit is installed hanging from the center of the upper side of the aquaculture tank, and each hanger frame is detachably assembled and installed with the tank wall of the aquaculture tank, or the tank wall It is characterized in that the mounting end installed in the form of a support leg is provided along the inner or outer circumferential direction of the The breeding water discharged through the discharge pipe is introduced into the water collection settling tank, and the live fish water from which the solids have been settled and removed in the water collection settling tank is re-supplied to each aquaculture tank through the live fish water discharge pipe equipped with a supply pump. In the circulation filtration system, the tank conversion device selected from the first embodiment or the second embodiment is applied to one aquaculture tank selected from each of the aquaculture tanks, while biological filtration of live fish water into the aquaculture tank By inputting the filtration medium for treatment, the aquaculture tank can be used as a biological filtration tank, and the live fish water discharge pipe is extended from the water level control pipe in the center of the aquaculture tank used as a biological filtration tank to the rest of the aquaculture tank through the supply pump and a live fish water inlet pipe for supplying live fish water from the water collection settling tank to the corresponding aquaculture tank is applied between the aquaculture tank used as the biological filtration tank and the water collection settling tank. A cylindrical drop-off chamber of a predetermined height with an open lower surface is disposed in the center, a live fish recovery pipe is connected and installed in the center of the upper surface of the drop-off chamber, and a pressure control tube is connected and installed on the upper surface of the recovery tank, It is characterized in that a valve mechanism is also installed in the pressure control pipe, and between each of the second branch pipes, the inside of the aquaculture tank for biological filtration of live fish water. It is characterized in that a stirring net in the form of a mesh for stirring the input filtration medium with live fish water is connected and installed.

According to the present invention as described above, as a culture tank installed in an on-land indoor aquaculture farm, the aquaculture tank can be converted into live fish by stirring the microbial filtration medium without changing the basic configuration comprising the tank wall, the tank bottom, and the water level control tube on the central side thereof. It provides the effect of being easily converted to a high-performance biological filtration tank that can be used for veterinary biological filtration treatment, the collection-type removal of various foreign substances by bubble components, and a sufficient amount of dissolved oxygen. It provides the effect of significantly reducing the burden of time and cost and space constraints due to the additional installation of a biological filter tank in the indoor aquaculture farm.

In other words, it is possible to build a circulation filtration system including a solids treatment device (collection settling tank) and a biological filter tank using only the aquaculture tank and piping line provided without going through the separate manufacturing and installation process of the biological filter tank, as well as the aquaculture tank. The adjustment of the piping line required for conversion to a biological filter tank is also minimized to around 10% of the total piping line, enabling the rapid application of the biological filter tank and the prompt normalization of the farm operation. The time and cost required can be greatly reduced, and by using the existing aquaculture tank instead of the narrow and deep biological filter tank, easy management of the filtration medium and filtration efficiency becomes possible.

In particular, a part of the live fish water discharged from the aquaculture tank converted to the biological filtration tank is guided to the drop swivel chamber installed in the recovery tank of the movable unit to drop and remove the solids into the settling hopper on the lower side, and then it is removed from the live fish water injection pipe. While pumping to the aeration propulsion unit through each branch pipe, a large amount of filtration medium injected into the corresponding aquaculture tank is pumped into live fish water together with microbubble components by the rotational force of each second branch pipe and a stirring net connected between them. By applying the mixing method evenly, it is possible to further maximize the biological filtration performance of live fish water and at the same time provide the effect of appropriately reducing the amount of amniotic water required for the operation of the biological filtration tank.

On the other hand, as the existing aquaculture tank is used as a biological filter tank, the amount of fish contained in the remaining aquaculture tank, that is, the live fish water treatment capacity in the aquaculture tank used as a biological filter tank according to the breeding density of the fish is also Because it can be easily adjusted, it provides the effect of promoting efficient and economical operation of the circulation filtration system and consequent productivity improvement. It is to provide an effect that can further dramatically improve the aquaculture environment and production system by establishing a system.

1 is a partial front sectional view showing an installation state of a water tank switching device according to a first embodiment of the present invention.
Fig. 2 is a schematic plan view of Fig. 1;
Figure 3 is a front cross-sectional view of the movable unit used in the present invention.
4 is a front cross-sectional view showing an example of a rotation distribution unit used in the present invention.
5 is a front cross-sectional view showing the main part extracting another application example of the rotation distribution unit used in the present invention.
6 is a side view showing an example of an aeration propulsion unit used in the present invention.
7 is a partial front sectional view showing the installation state of the water tank switching device according to the second embodiment of the present invention.
Fig. 8 is a schematic plan view of Fig. 7;
9 is a front cross-sectional view showing the main part of another application example of the rotation distribution unit used in the present invention.
10 is a schematic diagram showing another application example of the aeration propulsion unit used in the present invention.
11 is a planar wiring diagram showing a circulation filtration system to which the water tank conversion device of the present invention is applied.

Hereinafter, the present invention for achieving the above object will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the water tank switching device according to the first embodiment of the present invention surrounds the water level control tube 104 in the central part of the aquaculture water tank 101 from the outside so that the device base 1 is installed. It is installed upright, and the rotation distribution unit 4 is disposed on the upper surface of the apparatus base 1, and the live fish water injection pipe 7 and the air injection line 8 are installed on the upper surface of the rotation distribution unit 4, respectively. A first branch pipe 9 and a first branch line 11 that are connected and installed and extend in the horizontal direction to a position adjacent to the tank wall 102 of the aquaculture tank 101 on the side part of the rotation distribution unit 4 are connection is installed.

In addition, the first branch pipe 9 and the first branch line 11 have a second branch pipe 12 and a second branch pipe extending vertically downward to a position adjacent to the tank bottom 103 of the aquaculture tank 101, respectively. The branch lines 13 are connected to each other, and the second branch pipe 12 and the second branch line 13 are arranged adjacent to each other to form a pair, while the branch pipe 12 and the branch line 13 are connected to each other. The aeration propulsion unit 14 is connected and installed at the lower end, and the movable unit 20 for injecting live fish water into the live fish water injection pipe 7 is installed on the outside of the aquaculture tank 101.

As is known, the aquaculture tank 101 used in the present invention has a water tank bottom 103 installed at the lower end of the circular water tank wall 102, and a stand pipe in the center of the tank floor 103. A water level control pipe 104 in the form of a water level control pipe 104 is connected and installed, and at the lower end of the water level control pipe 104, a live fish water discharge pipe 107 extending to the outside of the aquaculture tank 101 through the water tank bottom 103 is connected and installed. , the water tank bottom 103 forms a slope that slopes toward the water level control pipe 104, and at the upper end of one side (left side in the drawing) of the water tank wall 102, sedimentation of solids from the water collection settling tank and degassing of carbon dioxide, etc. A live fish water inlet pipe 106 to which the made live fish water is supplied is disposed.

In the drawing, the water level control pipe 104 is shown as a representative example that the discharge hole 105 is formed over the entire surface of the pipe-type body. A filter net (network) may be installed at the live fish water outlet, and various types may be used, such as having a double structure of an external pipe provided with a live fish water inlet at the bottom and an inner pipe provided with a live fish water outlet at the top. Of course, the wall 102 may also be made of a square or polygonal wall in addition to a circular wall.

In addition, when the aquaculture tank 101 is converted into a biological filtration tank using the tank conversion device 10 of the present invention, a certain amount into the aquaculture tank 101, preferably inside the aquaculture tank 101 Although the amount of microbial filtration medium corresponding to 50 to 70% of the volume of the stored live fish water will be added, in order to avoid the complexity of the drawings, the filtration medium is not separately shown in the accompanying drawings, and the microorganisms The filtration medium corresponds to the known technology as described in Korean Patent Registration No. 10-1247990 previously mentioned as a prior art document, and in the present invention, a floating filtration medium rather than a sedimentation type filtration medium is used. It is preferable to use

The microbial filtration medium mentioned in the prior art document is in the form of a short pipe of about 2 cm in length, and a plurality of radial support ribs are formed inside the body. becomes a protruding plastic medium, and other various types of filtration media can be used, and microorganisms attached to and cultured on the filtration media can also be selected and applied to microorganisms suitable for filtration treatment of breeding water, a representative example of which is nitro. Examples include aerobic nitrifying microorganisms called Nitrosomonas and Nitrobacter (nitrifying bacteria).

Bacteria called Nitrosomonas are responsible for oxidizing ammonia (NH ₃ ,NH ₄ ⁺ ) components to nitrous acid (NO ₂ ^- ), and the bacteria called Nitrobacter are nitrites (NO ₂ ^- ) is responsible for oxidizing nitric acid (NO ₃ ^- ) harmless to aquatic organisms, and the biological purification reaction formula by Nitrosomonas and Nitrobacter is as follows, and the filtration medium is outside of the aquaculture tank 101 Adjust the size of the discharge hole 105 or the discharge port mentioned in the description of the water level control pipe 104 above, the size of the mesh of the sieve or the size of the inlet of the external pipe to be smaller than the size of the filtration medium so that it does not flow out into the filtration medium. it is required to

NH ₄ ⁺ + 1.5O ₂ ----(Nitrosomonas)----→ NO ₂ ^- + H ₂ O + 2H ⁺ + 240 ~ 350 kj/mol

2NO ₂ ^- + 0.5O ₂ ----(Nitrobacter)-----→ NO ₃ ^- + 65 ~ 90 kj/mol

In the water tank switching device 10 according to the present invention, the device base 1 providing the base is at least three along the lower surface edge of the mounting plate 2 disposed on the upper side of the water level control pipe 104 . The above supporting legs 3 are connected and installed, and the lower end of each of the supporting legs 3 is placed on the water tank bottom 103 side along the circumferential direction of the water level control pipe 104, and each of the supporting legs 3 ) is preferably applied to the part where the reinforcing bar is connected to the mounting plate 2, and it is preferable to apply a pedestal that is in close contact with the water tank bottom 103 in a wide area also at the lower end of each of the support legs 3 .

In addition, the rotation distribution unit 4 is axially rotatably installed on the upper surface of the mounting plate 2 of the apparatus base 1 together with the first branch pipe 9 and the first branch line 11, while the The live fish water and compressed air supplied through the live fish water injection pipe 7 and the air injection line 8 are guided to the first branch pipe 9 and the first branch line 11, respectively, and the aeration propulsion unit 14 ) is rotated using the injection pressure of live fish water and compressed air supplied from the first branch pipe 9 and the first branch line 11 through the second branch pipe 12 and the second branch line 13, respectively. The injection propulsion force required for shaft rotation of the distribution unit 4 and the bubbles necessary for aeration of live fish are created.

Accordingly, the first branch pipe (9), the first branch line (11), and the second branch pipe (12) and the second branch line (13) by the injection pressure of the live fish water injected from the aeration propulsion unit (14) The frame-type structure consisting of The microbial filtration medium injected into the furnace is uniformly mixed in the live fish water together with a large amount of microbubble components generated from the aeration propulsion unit 14 .

In order to smoothly implement the frame-type stirring operation as described above, in the case of the first branch pipe 9, at least one may be installed, but in the case of the second branch pipe 12, it is preferable to install at least two or more. In the accompanying drawings, a total of two of the first branch pipes 9 are installed with an angle range of 180 degrees, while the second branch pipes 12 have a total of four for each first branch pipe 9 . installed in number, and the first branch line 11 and the second branch line 13 are adjacent to the branch pipe at the corresponding position according to the arrangement state of the first branch pipe 9 and the second branch pipe 12 arranged to do so.

However, the arrangement state of the first branch pipe 9 and the second branch pipe 12 and the first branch line 11 and the second branch line 12 based thereon are not limited to the manner shown in the drawings. It is clear that the number of applications of the first branch pipe 9 is not to exceed 8 at most At the same time, it is preferable that the number of applications of the second branch pipe 12 to one first branch pipe 9 also does not exceed 8 at most.

In addition, if the stirring net 15 in the form of a mesh is installed between the two second branch pipes 12 disposed adjacent to each other as in FIG. It is preferable to apply a mesh made of PE (polyethylene), which has excellent corrosion resistance and tensile strength for seawater, as the stirring net 15, and the size of the mesh provided for the stirring net 15 is Even in the case of , it is preferable to form a size smaller than the size of the filtration medium within the range that minimizes the rotational resistance caused by the live fish.

As shown more clearly in FIG. 3 , the movable unit 20 of the tank switching device 10 according to the present invention is connected to the water level control tube 104 and is connected to the live fish water that extends to the outside of the aquaculture tank 101 . The live fish recovery pipe 18 branched from the discharge pipe 107, the recovery tank 16 to which the live fish recovery pipe 18 is connected and installed, and the live fish water stored in the recovery tank 16 are discharged to the outside. An injection pump 21 for pumping, a sedimentation hopper 17 provided under the recovery tank 16, a drain pipe 23 connected to the lower end of the sedimentation hopper 17, and the drain pipe (23) is made including the valve mechanism (V) installed in.

In addition, the live fish water injection pipe 7 connecting the movable unit 20 to the rotation distribution unit 4 is connected from the recovery tank 16 of the movable unit 20 through the injection pump 21 to the rotation distribution unit 4 It extends to the side, and in the drawing, the recovery tank 16 is configured to be supported at a predetermined height by a plurality of support legs 22 disposed along the periphery of the settling hopper 17, and each of the support legs 22 ), it is preferable to apply a reinforcing bar to the part where the recovery tank 16 is connected, and to apply a pedestal for securing the ground area and reinforcing the supporting strength to the lower side of each supporting leg 22 as well.

The movable unit 20 introduces a part of the live fish water discharged from the aquaculture tank 101 to the outside through the live fish water discharge pipe 107 into the recovery tank 16 to further remove solids in the live fish water. Next, since this is to be injected from the live fish water injection pipe 7 through the rotation distribution unit 4, each branch pipe 9, 12, and the aeration propulsion unit 14, this function is more reliably achieved In the center of the inner center of the recovery tank 16, a cylindrical drop-off chamber 19 of a predetermined height with an open lower surface is disposed, and a live fish recovery pipe ( 18) is connected and installed.

Solids in live fish water in the process of passing the live fish flowing into the inside of the recovery tank 16 in the shape of a “∪” shape according to the application of the drop swing chamber 19 as described above While the components are naturally guided to the sedimentation hopper 17 side, it is possible to prevent the solid components from being sucked into the live fish water injection pipe 7 side by the suction force of the injection pump 21, and it is dropped and stored toward the sedimentation hopper 17 side. The solid component is periodically removed by opening the valve mechanism (V) installed in the drain pipe (23).

In addition, the injection pump 21 preferably uses a self-priming pump capable of normal operation even if the air component is sucked together with the live fish water instead of the general centrifugal pump, and the recovery tank 16 is the injection pump 21 It is preferable to use a pressure tank that can stably support internal pressure fluctuations according to the operation of , the valve mechanism (V) may be installed with a manual control valve or an automatic control valve, etc., the upper inlet and outlet of the inner pressure control tube 24 to prevent unnecessary inflow of foreign substances to the downward direction. can also be installed.

4 shows a rotation distribution unit 4 having a relatively simple structure applicable to the tank switching device 10 according to the first embodiment of the present invention, and the exit end of the live fish water injection pipe 7 is It extends in the vertical direction toward the rotation distribution unit 4 by a predetermined length, and the rotation distribution unit 4 includes a distribution pipe 25 interposed between the live fish water injection pipe 7 and the first branch pipe 9 . ), a support plate 5 interposed between the lower end of the distribution pipe 25 and the mounting plate 2 of the device base 1, and a live fish water injection pipe 7 and a support plate ( 5) is made by including the upper and lower bearings 26 that are axially rotatably supported between the two.

More specifically, the lower end outlet of the live fish water injection pipe 7 is installed to communicate with the upper end inlet of the distribution pipe 25 , and the first branch pipe 9 is the lower part of the distribution pipe 25 . A case-type bearing holder 27 connected to the outer ring side of the bearing 26 is provided on the lower periphery of the live fish water injection pipe 7 and the central portion of the support plate 5, and the distribution A flange-type rotation support 28 connected to the inner ring side of the bearing 26 together with the body of the distribution pipe 25 is provided on the outer peripheral surfaces of the upper and lower portions of the pipe 25, so that the distribution pipe 25 is Shaft rotation (relative rotation) is possible with the first distribution pipe 9 between the live fish water injection pipe 7 and the support plate 5 .

In addition, in the case of the air injection line 8, an introduction part that penetrates one side wall of the outlet of the live fish water injection pipe 7 and then extends downward along the central axis of the live fish water injection pipe 7, and the distribution pipe ( 25) is divided into a distribution portion extending vertically downward along the central axis direction and then extending parallel to the first branch pipe 9 to form a first branch line 11 through the lower portion of the distribution pipe 25, As each of the air injection line (8) parts are connected and installed with the rotating bearing (29) interposed therebetween, the air injection line (8) part as the distribution part is also axially rotated together with the distribution pipe (25).

As a more preferable example of the rotation distribution unit 4 applicable to the present invention, as shown in FIG. 5 , a cover cap 6 to which the live fish water injection pipe 7 and the air injection line 8 are connected and installed, and , the rotating water tub 30 disposed under the cover cap 6 with the upper surface open, the lower side of the bottom 32 of the rotating water tub 30 and the mounting plate of the device base 1 (2) a support plate (5) interposed therebetween, and a bearing (26) for axially supporting the rotating water tank (30) between the cover plate (6) and the support plate (5), According to the application of the rotary water tank 30, the strong pressure of the live fish discharged from the live fish water injection pipe 7 can be more stably supported compared to the pipe-type rotary distribution unit 4 as in FIG. do.

A bearing holder 27 surrounding the body 31 of the rotating water tank 30 is connected and installed on the outer peripheral surface of the cover cap 6 constituting the rotation distribution unit 4, and the bearing holder 27 and the body A pair of bearings 26 are interposed between the parts 31 in the upper and lower directions, and the inner ring portion of the lower bearing 26 is supported on the outer peripheral surface of the lower end side of the body 31 of the rotating water tank 30 . A rotating support unit 28 is formed to protrude, and a bearing 26 is also interposed between the rotating water tank 30 and the support plate 5 , and the bearing 26 is the bottom of the rotating water tank 30 . (32) It is interposed between the ring-shaped bearing holder 27 protruding from the center of the lower surface and the rotating support 28 in the form of a disk protruding from the center of the upper surface of the support plate 5 .

And, in the case of the air injection line 8, the introduction part disposed directly above the through hole of the central part of the cover cap 6 together with the mounting cap 35 assembled to the upper surface of the cover cap 6, and the corresponding through hole is divided into an axial portion extending vertically downward along the central axis of the rotating water tank 30 from the The first branch pipe 9 is connected and installed on the lower outer peripheral surface of the rotary water tank 30 , and the first branch line 11 is an air injection line 8 located inside the rotary water tank 30 . It extends in parallel with the first branch pipe 9 through the body 31 of the rotary water tank 30 from the lower end side of the axial line.

In addition, the upper inner peripheral surface of the body part 31 of the rotating water tank 30 and the lower outer peripheral surface of the cover cap 6 are connected with a rotating coupler 34 interposed therebetween to provide a watertight function. A snap ring 33 for additionally supporting the inner ring portion of the upper bearing 26 is installed on the outer peripheral surface of the upper end of the body 31 of the rotating water tank 30, and the air injection line 8 as the introduction part The lower outlet part penetrates the central part of the mounting cap 35 and is integrally connected and fixed with the mounting cap 35, while the mounting cap 35 and the cover cap span the peripheral portion of the corresponding air injection line 8. It is preferable to interpose a sealing ring (not shown) on the assembly surface of (6).

In addition to the above method, other various types of rotation distribution unit such as a sprinkler method can be applied to the present invention, as well as a bearing 26 and an air injection line disposed on the uppermost side among the bearings 26 . A watertight bearing may be used for the rotary bearing 29 installed in (8), and it is preferable to perform a watertight treatment also on the penetrating portion of the first branch line 11, and as shown in FIG. 4, the first branch line 11 ) and a part of the second branch line 13 may be installed with an air injection hose 8a made of a flexible material rather than a metal pipe, and the support plate 5 is detachable from the mounting plate 2 of the device base 1 . It is preferable to assemble and install as much as possible, and if necessary, it is also possible to directly use the mounting plate 2 of the device base 1 as the support plate 5 .

6 is the simplest application example of the aeration propulsion unit 14 that can be applied to the present invention, and the injection nozzle 36 for live fish water is disposed on one side (left side in the drawing) of the lower end of the second branch pipe 12. ) (a total of three in the drawing) is installed, and a bubble disperser 37 such as an air stone is connected and installed at the lower end of the second branch line 13 to match the position adjacent to the injection nozzle 36. Preferably, the second branch pipe 12 and the second branch line 13 are bound together using a clamping band 38, etc., and the bubble disperser 37 is connected to the second branch line 13. It is preferable to firmly connect and fix the branch line 13 with an adhesive or the like so as not to fall from it.

In addition, the direction in which the injection nozzle 36 is installed at the lower end of the second branch pipe 12 is the rotation distribution unit 4 regardless of the number of applications of the first branch pipe 9 and the second branch pipe 12 . Each branch pipe (9) (12) with the branch line (11) (13) is to be placed at a position opposite to the direction to be rotated around A number of injection pressures can be used as rotational propulsion force, and the bubble disperser 37 passes through each of the branch lines 11 and 13 and the air injection line 8 to an unillustrated air pump, air compressor or blower, etc. By being connected and installed, the compressed air required for mass composition of microbubbles is supplied.

As a more preferable example of the aeration propulsion unit 14 applicable to the present invention, as shown in FIG. 10 , a live fish water injection passage through which the second branch pipe 12 and the second branch line 13 are respectively connected. (44) and the air injection passage (45) are provided on the side portion of the main body (43), and inside the central portion of the main body (43), compressed air supplied through the air injection passage (45) is supplied through the live fish water injection passage ( An air outlet 46 and a gas-liquid mixing unit 47 are provided for mixing in the form of microbubbles in the live fish water supplied through 44), and the microbubble component is mixed with the live fish water on the front side of the gas-liquid mixing unit 47. It becomes a nano-bubble spraying mechanism provided with a spraying pipe 48 as a spraying passage 49 for spraying to the outside of the main body 43 together.

The nano-bubble injection mechanism also corresponds to the known technology described in Republic of Korea Patent No. 10-1544414 (announcement date: August 18, 2015), and in addition, a large amount of microbubble components by mixing live fish water and compressed air As long as the branch pipes 9 and 12 can be axially rotated around the rotation distribution unit 4 together with the branch lines 11 and 13 by strongly spraying the The microbubbles formed from the bubble disperser 37 or the nano-bubble injection device are used for the filtration reaction of microorganisms and the supply of oxygen necessary for securing dissolved oxygen and the cohesive removal of foreign substances (protein components, etc.) used

As described above, the foreign substances aggregated by the microbubble component are discharged from the water level control pipe 104 of the corresponding aquaculture tank 101 to the live fish water discharge pipe 107, then go through another aquaculture tank as a breeding tank and finally to a water collection sedimentation tank. As it flows in (refer to FIG. 11), the sediment is removed from the water collecting and precipitating tank 110 or automatically discharged to the outside through the overflow pipe 109 of the water collecting and settling tank 110, and some of the aggregated foreign substances are removed from the water tank according to the present invention. It flows into the recovery tank 16 constituting the movable unit 20 of the conversion device 10 , and then is guided to the settling hopper 17 through the drop vortex chamber 19 .

7 and 8 is a tank switching device 10 according to a second embodiment of the present invention, which replaces the device base 1 of the first embodiment described above, and the tank wall of the aquaculture tank 101 ( 102) A plurality of (four in the drawing) radial hanger frames 40 extending obliquely upward at a predetermined angle, preferably at an angle of about 10 to 30 degrees, from the upper end side toward the center side of the aquaculture tank 101. applied, and the rotation distribution unit 4 is installed hanging from the center of the upper side of the aquaculture tank 101 in a state of being connected to the end of each hanger frame 40, and the rest of the configuration is the previous first embodiment It is in line with that described in the bar, the number of the hanger frame 40 is also preferably within the range of at least two to a maximum of eight.

At the end side of each of the hanger frames 40, there is provided a mounting end 39 that is assembled and installed detachably with the upper end of the water tank wall 102 of the aquaculture water tank 101, and the supporting end 39 is provided. may be assembled and installed by screwing on the inner or outer surface of the tank wall 102, along the inner or outer circumferential direction of the tank wall 102, the tank floor 103 or the form of a support leg placed on the bottom of the farm In addition, each hanger frame 40 can be disposed on the upper part of the aquaculture tank 101 by various other methods, as well as a hanger frame 40 connected to the rotation distribution unit 4 It is preferable to apply a reinforcing bar to the end and the mounting end 39 of the.

Even in the case of the rotation distribution unit 4 used in the water tank switching device 10 according to the second embodiment of the present invention, the main configuration of the rotation distribution unit 4 described based on FIG. 5 is mostly included. , The only difference is that, as shown in FIG. 9, the cover cap 6 part to which the live fish water injection pipe 7 and the air injection line 8 are connected is installed in connection with the end of each hanger frame 40, In accordance with this, the support plate 5 in FIG. 5 is omitted together with the device base 1, while the lower end of the air injection line 8 as the axis part penetrates the bottom 32 of the rotary water tank 30 to the outside. After extending to , the first branch line 11 is installed to extend in a direction parallel to the first branch pipe 9 at the corresponding position.

As described above, a connecting flange 41 is provided on the outer periphery of the cover cap 6 to connect the cover cap 6 of the rotation distribution unit 4 to the end side of each hanger frame 40, The end side of each hanger frame 40 is assembled over the outer periphery of the lower surface of the connection flange 41, and the body portion ( A bearing holder 27 surrounding the 31 ) is connected, and a pair of bearings 26 are interposed between the bearing holder 27 and the body 31 .

In addition, in consideration of the fact that the rotation distribution unit 4 is installed in a manner that is suspended from the end of each hanger frame 40, a bearing ( 26) is additionally applied, the bearing 26 is interposed between the bearing holder 27 and the cover cap 6 at the uppermost position corresponding to just below the lower surface of the connection flange 41, , on the outer peripheral surface of the cover cap 6 at the corresponding position, the connecting flange 41 together with the covering 42 disposed along the inner peripheral portion of the upper surface of the connecting flange 41 in a state of being engaged with the inner ring portion of the bearing 26. Cover the connecting flange 41. A snap ring (33) is provided for rigid positioning on the cap (6).

Except for some differences described above, the rest of the configuration of the rotation distribution unit 4 is in line with the contents described based on FIG. ), the reason for penetrating through the bottom part 32 is to ensure watertight performance by minimizing the penetration portion of the pneumatic line for the rotary water tank 30, and from the same point of view, the air injection line 8 is the rotary water tank ( 30), it is preferable to perform watertight treatment also on the portion penetrating the bottom, and if necessary, the first branch line 11 is installed to penetrate the body 31 of the rotating water tank 30 as shown in FIG. Of course it could be.

As shown in FIG. 11, the existing circulation filtration system applied to an indoor aquaculture farm on land is transformed into a circulation filtration system 100 including a biological filter tank using the tank conversion device 10 of the present invention. The breeding water discharged through the breeding water discharge pipe 108 from the aquaculture water tank 101 installed in the space with the number of at least three (6 in total) in the space is introduced into the water collection settling tank 110, and the water collection settling tank 110 Most of the existing circulation filtration system that re-supply the live fish water from which the sedimentation and removal of solids has been made to each aquaculture tank 101 through the live fish water discharge pipe 107 equipped with a supply pump 112 is utilized as it is This makes construction possible.

As is known in the water collecting and settling tank 110 , the excess amount of breeding water discharged from each aquaculture tank 101 and floating foreign substances (including foreign substances aggregated by air bubbles) contained in the breeding water are discharged to the outside. A drain pipe 111 is provided for discharging to the outside an overflow pipe 109 for discharging the water, and a drain pipe 111 for discharging foreign substances (solids) that have settled to the bottom of the water collection sedimentation tank 110, and the drain pipe 111 is also provided with a valve mechanism ( V) is installed, and in the present invention, the water collection settling tank 110 is used as a solids filtering device, and at the same time, one of the aquaculture tanks 101 is converted into a biological filter tank. The circulation filtration system 100 is achieved.

In other words, the tank conversion operation for using the existing aquaculture tank 101 as a biological filtration tank is a selective aquaculture tank 101 among a plurality of aquaculture tanks 101 installed in an indoor aquaculture farm on land, preferably a water collection settling tank 110 ), the tank switching device 10 of the first embodiment or the second embodiment as described above is applied to the aquaculture tank 101 at a position closest to the live fish water outlet, while the inside of the aquaculture tank 101 It is said that it is carried out in such a way that a certain amount of microbial filtration medium for biological filtration treatment of live fish water is input according to the quantity of live fish water.

The adjustment of the piping line performed together with the tank conversion work as described above is a water level control pipe 104 in the center of the aquaculture tank 101 in which the live fish water discharge pipe 107 previously installed in the indoor space of the farm is utilized as a biological filtration tank. ) through the supply pump 112 to the rest of the aquaculture tank (breeding tank) 101, and between the aquaculture tank 101 used as the biological filtration tank and the water collection settling tank 110 from the water collection settling tank 110 This can be completed in a very easy and simple way by applying the live fish water inlet pipe 106 for supplying live fish water to the aquaculture tank 101 .

According to the present invention having the configuration as described above, as the aquaculture water tank 101 installed in an indoor aquaculture farm on land, the basic configuration is composed of the tank wall 102, the tank bottom 103, and the water level control pipe 104 on the central side thereof. Easily convert the aquaculture tank 101 into a biological filtration tank with excellent performance capable of biological filtration treatment of live fish water by agitation of a microbial filtration medium, trapping removal of various foreign substances by bubble components, and sufficient securing of dissolved oxygen without changing the In this way, it is possible to greatly reduce the burden of time, cost, and space constraints due to the additional installation of biological filtration tanks in onshore indoor aquaculture farms that have been used in the past.

In other words, it is possible to build a circulation filtration system 100 including a solids treatment device (collection settling tank) and a biological filter tank using only the aquaculture tank 101 and piping lines provided without going through a separate manufacturing and installation process of the biological filter tank. In addition, the adjustment of the piping line required to convert the aquaculture tank 101 into a biological filter tank is also minimized to about 10% of the total piping line, so that the rapid application of the biological filter tank and the prompt normalization of the operation of the aquaculture are possible. It is said that the time and cost required for the construction can be greatly reduced from the difficulty of the construction according to the management becomes possible.

In particular, a part of the live fish water discharged from the aquaculture tank 101 converted into a biological filtration tank is guided to the drop vortex chamber 19 installed in the recovery tank 16 of the movable unit 20, and the solid component is transferred to the sedimentation hopper on the lower side. After dropping and removing it to (17), it is pumped from the live fish water injection pipe (7) through each branch pipe (9, 12) to the aeration propulsion unit (14), while a large amount injected into the aquaculture tank (101) By applying a method of uniformly mixing the filtration medium of each second branch pipe 12 and the stirring net 15 connected therebetween in the live fish water together with the microbubble components by the rotational force, the biological The filtration performance can be further maximized, and the amount of pumped water required for the operation of the biofiltration tank can be appropriately reduced.

On the other hand, as the existing aquaculture tank 101 is used as a biological filtration tank, the aquaculture tank used as a biological filtration tank according to the amount of fish accommodated in the remaining aquaculture tank 101, that is, the breeding density of fish ( 101) can also be easily adjusted, so it is possible to efficiently and economically operate the circulation filtration system 100 and improve productivity accordingly, and even in a newly installed onshore indoor aquaculture plant, a biological filter tank It is possible to further improve the aquaculture environment and production system more dramatically by establishing a circulation filtration system based on the aquaculture tank 101 rather than the aquaculture tank.

1: device base 2: mounting plate 3,22: support leg
4: rotation distribution unit 5: support plate 6: cover cap
7: Live fish water injection pipe 8: Air injection line 8a: Air injection hose
9: first branch pipe 10: water tank switching device 11: first branch line
12: second branch pipe 13: second branch line 14: aeration propulsion unit
15: stirring net 16: recovery tank 17: settling hopper
18: live fish recovery pipe 19: drop swivel chamber 20: movable unit
21: injection pump 23,111: drain pipe 24: internal pressure control pipe
25: distribution pipe 26: bearing 27: bearing holder
28: rotary support 29: rotary bearing 30: rotary water tank
31: body 32: bottom 33: snap ring
34: rotary coupler 35: mounting cap 36: spray nozzle
37: bubble disperser 38: clamping band 39: fixed end
40: hanger frame 41: connecting flange 42: covering
43: main body 44: live fish water injection passage 45: air injection passage
46: air outlet 47: gas-liquid mixing part 48: injection pipe
49: injection passage 100: circulation filtration system 101: aquaculture tank
102: water tank wall 103: water tank bottom 104: water level control pipe
105: discharge hole 106: live fish water inlet pipe 107: live fish water outlet pipe
108: breeding water discharge pipe 109: overflow pipe 110: water collection sedimentation tank
112: supply pump V: valve mechanism

Claims (10)

A device support (1) installed upright in a manner that surrounds the water level control tube (104) in the central part of the aquaculture tank (101) from the outside, and a rotation distribution unit (4) disposed on the upper surface of the device support (1); A live fish water injection pipe 7 and an air injection line 8 connected to the upper surface of the rotation distribution unit 4, respectively, and the water tank wall 102 of the aquaculture water tank 101 at the side of the rotation distribution unit 4 At least one first branch pipe (9) and a first branch line (11) extending in the horizontal direction to a position adjacent to 101) at least two second branch pipes 12 and second branch lines 13 respectively extending vertically downward to a position adjacent to the water tank bottom 103, and the second branch pipes 12 and the second In a state where the branch lines 13 are paired one by one, the aeration propulsion unit 14 is connected and installed at the lower ends of the second branch pipe 12 and the second branch line 13, and the live fish water injection pipe 7 is used. It is made including a movable unit 20 for injecting live fish water,
The device base (1) has at least three support legs (3) connected and installed along the lower surface edge of the mounting plate (2) disposed on the upper side of the water level control pipe (104), and each of the support legs ( 3) The lower end is placed on the water tank bottom 103 side along the circumferential direction of the water level control pipe 104, and the rotation distribution unit 4 includes a first branch pipe 9 and a first branch line 11 and The live fish water and compressed air supplied through the live fish water injection pipe 7 and the air injection line 8 are connected to the first branch pipe 9 and Each is guided to the first branch line 11, and the aeration propulsion unit 14 is connected to the second branch pipe 12 and the second branch line from the first branch pipe 9 and the first branch line 11. 13), by using the injection pressure of the live fish water and compressed air, respectively, the injection propulsion force required for the shaft rotation of the rotation distribution unit 4 and the bubbles necessary for aeration of the live fish water are created, while the It is to ensure that the input microbial filter medium is evenly mixed with the bubble components in the live fish water,
The movable unit 20 includes a live fish recovery pipe 18 branching from a live fish water discharge pipe 107 that extends to the outside of the aquaculture tank 101 in a state of being connected to the water level control pipe 104, and the live fish recovery pipe A recovery tank 16 to which (18) is connected and installed, an injection pump 21 for pumping the live fish stored inside the recovery tank 16 to the outside, and a lower portion of the recovery tank 16 are provided. It consists of a settling hopper 17, a drain pipe 23 connected to the lower end of the settling hopper 17, and a valve mechanism V installed on the drain pipe 23, and the live fish water injection pipe (7) is a water tank conversion device for using the aquaculture tank as a biological filtration tank, characterized in that it extends from the recovery tank 16 of the movable unit 20 to the rotation distribution unit 4 through the injection pump 21. The cover cap (6) according to claim 1, wherein the rotation distribution unit (4) has a cover cap (6) to which the live fish water injection pipe (7) and the air injection line (8) are connected and installed, and the upper surface is opened. ), a rotating water tank 30 disposed below, and a support plate 5 interposed between the lower side of the bottom 32 of the rotating water tank 30 and the mounting plate 2 of the device base 1, and, and a bearing 26 for axially supporting the rotating water tank 30 between the cover cap 6 and the support plate 5 , and the support plate 5 is mounted on the device base 1 . It is detachably assembled and installed with the plate (2),
A bearing holder 27 surrounding the body 31 of the rotating water tank 30 is connected and installed on the outer circumferential surface of the cover cap 6, and between the bearing holder 27 and the body 31, A pair of bearings 26 are interposed downward, and a rotation support part 28 supporting the lower bearing 26 is formed to protrude from the outer peripheral surface of the lower end side of the body part 31 of the rotary water tank 30, and the rotation The bearing 26 installed between the water tank 30 and the support plate 5 includes a ring-shaped bearing holder 27 protruding from the center of the bottom 32 of the rotating water tank 30 and the support plate ( 5) is interposed between the rotating support part 28 in the form of a disk protruding from the center of the upper surface,
The air injection line 8 includes an introduction part disposed directly above the through hole of the central part of the cover cap 6 together with the mounting cap 35 assembled on the upper surface of the cover cap 6, and the rotating water tank from the through hole. (30) is divided into an axial portion extending vertically downward along the central axis direction, and the air injection line (8) is connected and installed with a rotating bearing (29) interposed therebetween, the first branch pipe (9) is connected and installed on the lower outer peripheral surface of the rotary water tank 30, and the first branch line 11 is the body part ( 31) and extending in parallel to the first branch pipe (9). At least two or more radial hanger frames (40) extending obliquely upward by a predetermined angle from the upper end of the tank wall 102 of the aquaculture tank 101 toward the center side of the aquaculture tank 101, and each of the hanger frames ( 40), the rotation distribution unit 4 is installed hanging from the center of the upper side of the aquaculture tank 101, and the live fish water injection pipe 7 and the air injection line connected to the upper surface of the rotation distribution unit 4, respectively. (8), and at least one first branch pipe (9) and a first branch line (11) extending in the horizontal direction from the side portion of the rotation distribution unit (4) to a position adjacent to the water tank wall (102); At least two second branch pipes 12 each extending vertically downward from the first branch pipe 9 and the first branch line 11 to a position adjacent to the tank bottom 103 of the aquaculture tank 101, and The second branch line 13 and the lower ends of the second branch pipe 12 and the second branch line 13 in a state where the second branch pipe 12 and the second branch line 13 are paired one by one It consists of an aeration propulsion unit 14 connected to and installed, and a movable unit 20 for injecting live fish water into the live fish water injection pipe 7,
Each of the hanger frames 40 is installed detachably with the water tank wall 102 of the aquaculture tank 101, or installed in the form of a support leg along the inner or outer circumferential direction of the water tank wall 102; (39) is provided, wherein the rotation distribution unit (4) is located on the upper part of the aquaculture tank (101) by each hanger frame (40), the first branch pipe (9) and the first branch line (11) On the other hand, the live fish water and compressed air supplied through the live fish water injection pipe 7 and the air injection line 8 are directed to the first branch pipe 9 and the first branch line 11. The aeration propulsion unit 14 is a live fish supplied from the first branch pipe 9 and the first branch line 11 through the second branch pipe 12 and the second branch line 13, respectively. By using the injection pressure of water and compressed air, the injection propulsion force necessary for the shaft rotation of the rotary distribution unit 4 and the bubbles necessary for aeration of the live fish are created, while the microbial filtering medium injected into the aquaculture tank 101 is mixed with the bubble components and It is to mix evenly in the live fish water together,
The movable unit 20 is connected to the water level control pipe 104 in the center of the aquaculture tank 101 and is branched from the live fish water discharge pipe 107 that extends to the outside of the aquaculture tank 101. a recovery tank 16 to which the live fish recovery pipe 18 is connected; an injection pump 21 for pumping the live fish water stored in the recovery tank 16 to the outside; and the recovery tank ( 16) including a settling hopper 17 provided in the lower part, a drain pipe 23 connected to the lower end of the settling hopper 17, and a valve mechanism V installed in the drain pipe 23, and the live fish water injection pipe 7 extends from the recovery tank 16 of the movable unit 20 through the injection pump 21 to the rotation distribution unit 4 side. water tank conversion device for The cover cap (6) according to claim 3, wherein the rotation distribution unit (4) has a cover cap (6) to which the live fish water injection pipe (7) and the air injection line (8) are connected and installed, and the upper surface is opened. ) and a rotating water tank 30 disposed under the, and a bearing 26 for axially supporting the rotating water tank 30 from the lower side of the cover cap 6 , the cover cap On the outer peripheral surface of (6), a connection flange 41 for connecting the end side of each hanger frame 40 with the cover cap 6 is assembled and installed,
Below the connecting flange 41, a bearing holder 27 surrounding the body 31 of the rotating water tank 30 is connected and installed together with the hanger frame 40, and the bearing holder 27 and the body part ( At least two or more bearings 26 are interposed between them in the upper and lower directions, while the rotation support unit 28 supporting the lower bearing 26 is provided on the outer peripheral surface of the lower end side of the body part 31 . is formed to protrude,
The air injection line 8 includes an introduction part disposed directly above the through hole of the central part of the cover cap 6 together with the mounting cap 35 assembled on the upper surface of the cover cap 6, and the rotating water tank from the through hole. (30) is divided into an axial portion extending vertically downward along the central axis direction, and the respective air injection line (8) parts are connected and installed with a rotating bearing (29) interposed therebetween,
The first branch pipe 9 is connected and installed on the lower outer peripheral surface of the rotary water tank 30 , and the first branch line 11 passes through the bottom 32 of the rotary water tank 30 to the outside. A water tank conversion device for using an aquaculture tank as a biological filtration tank, characterized in that it extends parallel to the first branch pipe (9) from the lower end of the air injection line (8) as an extended axial part. According to any one of claims 1 to 4, wherein in the center of the inside of the recovery tank (16) constituting the movable unit (20), a cylindrical drop orbiting chamber (19) of a predetermined height with an open lower surface is disposed, A tank conversion device for utilizing aquaculture tanks as biological filtration tanks, characterized in that a live fish recovery pipe (18) is connected to the center of the upper surface of the drop turning chamber (19). According to any one of claims 1 to 4, wherein an internal pressure regulating pipe (24) is connected to the upper surface of the recovery tank (16) constituting the movable unit (20), and a valve mechanism is also provided on the internal pressure regulating pipe (24). (V) A tank conversion device for using the aquaculture tank as a biological filtration tank, characterized in that it is installed. [Claim 5] The method according to any one of claims 1 to 4, wherein the aeration propulsion unit (14) includes a live fish water injection nozzle (36) installed on one side of the lower end of the second branch pipe (12), and the injection nozzle ( 36) and a water tank conversion device for using aquaculture tanks as biological filtration tanks, characterized in that it comprises a bubble disperser (37) connected and installed at the lower end of the second branch line (13). The live fish water injection according to any one of claims 1 to 4, wherein the aeration propulsion unit (14) has a second branch pipe (12) and a second branch line (13) provided on a side surface of the main body (43). It is connected to the inlet of the passage 44 and the air injection passage 45, respectively, and inside the central part of the main body 43, the compressed air supplied through the air injection passage 45 is supplied through the live fish water injection passage 44. An air outlet 46 and a gas-liquid mixing unit 47 are provided for mixing in the form of microbubbles in the live fish water supplied through it, and the microbubble component is mixed with the live fish water on the front side of the gas-liquid mixing unit 47 into the main body. (43) Water tank conversion device for using aquaculture tanks as biological filtration tanks, characterized in that the nano-bubble spraying mechanism installed with the spraying pipe 48 for spraying to the outside. According to any one of claims 1 to 4, between each of the second branch pipes (12), for biological filtration of live fish water, the filtration medium injected into the aquaculture tank (101) together with the live fish water. A water tank conversion device for using an aquaculture tank as a biological filtration tank, characterized in that a stirring net 15 in the form of a mesh for stirring is connected and installed. The breeding water discharged from the aquaculture tank 101 installed in at least three or more in the indoor space of the farm on land through the breeding water discharge pipe 108 is introduced into the water collection settling tank 110, and the solid In the circulation filtration system 100 to re-supply live fish water from which sedimentation and removal has been made to each aquaculture tank 101 through a live fish water discharge pipe 107 equipped with a supply pump 112,
The water tank switching device 10 selected from claims 1 to 4 is applied to one of the aquaculture tanks 101 selected from among the respective aquaculture tanks 101, while the inside of the aquaculture tank 101 By inputting a filtration medium for biological filtration of live fish water, the aquaculture tank 101 can be used as a biological filtration tank,
The live fish water discharge pipe 107 is extended from the water level control pipe 104 in the center of the aquaculture tank 101 used as a biological filtration tank to the rest of the aquaculture tank 101 through the supply pump 112, and is used as the biological filtration tank Between the aquaculture tank 101 and the water collecting settling tank 110, a live fish water inlet pipe 106 for supplying live fish water from the water collecting and settling tank 110 to the corresponding aquaculture tank 101 is applied. Circulation filtration system.

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