KR102458163B1 - aquaculture tank for automatically discharging solids - Google Patents

Abstract

The present invention is intended to remove particulate solids generated in an aquaculture tank. The present invention comprises: a water tank consisting of a water tank wall and a water tank bottom; a solid collection part which is recessed in a predetermined volume at the water tank bottom, collects solids, and provides a movement path for the solids; a solid collection part which is formed in a predetermined volume at the water tank bottom and has an open upper portion so as to be in communication with the water tank; a solid collection part which is provided in the form of an open channel at the water tank bottom; a scraper which moves solids settled on the water tank bottom to the solid collection part while moving in contact with the water tank bottom; at least one solid discharge port formed on the solid collection part; a solid discharge pipe which is connected to the solid discharge port and enables the water tank to be in communication with the outside; and a valve which is configured to open and close the solid discharge port or the solid discharge pipe. When the solid discharge port or the solid discharge pipe is opened, and breeding water accommodated in the tank is discharged, the solids are discharged together with the breeding water.

Description

{aquaculture tank for automatically discharging solids}

The present invention relates to an automatic solids discharge tank for discharging solids such as feed or feces from a tank for aquaculture and fishery.

Some of the feed supplied from the aquaculture tank is not ingested and remains in the breeding water, and about 70% of the ingested feed is also discharged in the form of feces.

Feed or feces, as organic matter, can be decomposed by microorganisms in breeding water to release inorganic nitrogen compounds such as ammonia, which can deteriorate the breeding environment.

Therefore, it would be preferable to remove these organic substances as soon as they are generated, but there is a limit to removing them in real time. If these organic substances remain for a certain period of time, they may be solidified and precipitated on the bottom of the tank.

If the precipitated solids stay in the tank for a long time, it will create an environment in which parasites and bacterial and viral pathogens can reproduce. This may cause a decrease in productivity.

Accordingly, various devices for removing solids or minimizing the residence time of solids have been proposed and used in the art.

For example, there is a foam separator used in a sedimentation tank or a seawater aquaculture facility, and recently, a drum filter is commonly used in a circulation filtration aquaculture system.

However, in the case of the above-mentioned sedimentation tank, there is a limit to be used in Korea, where the land area is narrow because the site area required to remove the solids is wide.

In addition, the foam separator can remove dissolved solids in water by using the polarity of fine bubbles, but is not suitable for removing particulate solids such as feces and residual feed.

Similarly, the drum filter has a high limitation in the initial equipment introduction cost, and in the process of backwashing the solids attached to the screen with high-pressure washing water, the solids are split into smaller particles and re-introduced into the breeding water may occur.

On the other hand, in breeding fish farming, it will be possible to form a strong flow rate in the tank to remove solids.

However, if such a strong flow rate is formed in a tank for aquaculture fishery such as gardenia and fish seedlings, proper food intake or a stable swimming environment may not be created.

Therefore, in a tank for breeding very small fish, an inefficient process such as a worker using a hose directly to remove organic matter or solid matter is caused.

This process may not only generate additional man-hours, but may also affect the breeding environment, and thus may be a direct cause of a decrease in productivity.

In particular, since a predetermined circulation rate is required in the circulation filtration method in which the water is reused after purifying the excrement and dissolved organic matter discharged by aquaculture organisms through physical, chemical, and biological treatment, the above-described direct removal of solids is applied. There is a limit to being

That is, there is a need in the art for a culture tank that can be applied to the circulation filtration method for breeding gardenia or fish seedlings.

US 2311524 B1 US 2203369 B1

An object of the present invention is to remove particulate solids generated in aquaculture tanks.

Another object of the present invention is to provide a tank in which solids can be automatically discharged by a circulating flow rate in order to be applied to a circulating filtration mode.

Another object of the present invention is to allow the solids to be smoothly discharged even in a low-speed circulating flow rate environment suitable for breeding gardenia fish or fish seedlings.

The solids automatic discharge water tank according to the present invention is a water tank composed of a water tank wall and a water tank bottom, a solid material collecting unit that is recessed to a predetermined volume in the water tank bottom, the solids are collected and provides a movement path of the solids, a predetermined in the water tank bottom A solids collecting part formed in a volume of a volume of A scraper moving to the solids collection unit, one or more solids outlets formed in the solids collecting unit, a solids outlet connected to the solids outlet to circulate the water tank with the outside, and a valve for opening and closing the solids outlet or the solids outlet Thus, when the solids outlet or the solids discharge pipe is opened, the breeding water accommodated in the water tank is discharged while the solids are discharged together.

In addition, the scraper is formed to a size that can block at least the solids collection unit from the water tank while passing through the open upper surface of the solid material collection unit, and in the automatic solid discharge water tank, the valve according to the position or movement period of the scraper A control unit for operating the is further included, wherein the valve is opened when the solids collecting unit is blocked from the water tank to prevent the fish from being discharged together.

In addition, the automatic solids discharge water tank further includes a solid discharge water inlet that is recessed to a predetermined volume in the center of the water tank bottom, and the solids collection unit is extended so that one side flows with the solid discharge water inlet, the valve is When opened, the solids are discharged from the solids discharge water inlet through the solids collection unit and by the water flow formed toward the solids outlet.

In the automatic solid discharge water tank according to the present invention, particulate solids are collected by the scraper into the solids collecting unit, and when the valve is opened, the solids collected in a predetermined amount are rapidly discharged to the solids outlet by hydraulic pressure.

In addition, by allowing the valve to be opened as described above when the scraper blocks the solids collection unit, fish loss that may occur with the discharge of the solids is prevented.

In addition, the flow rate of the breeding water discharged from the solid discharge water inlet provided in the center of the tank is started, and the cross-sectional area of the path leading to the solid discharge port and the solid material discharge pipe via the solid material collection unit is gradually reduced so that the flow rate can be gradually increased. .

Through this, the flow velocity at the inlet of the solids discharge water is formed at a low speed to minimize the impact on the breeding environment, and there is an effect of improving the efficiency of discharging solids by forming a high flow rate at the solids outlet.

1 shows an embodiment of an automatic solids discharge tank according to the present invention.
Figure 2 shows another embodiment of the solids automatic discharge tank according to the present invention.
3 (a) and (b) show a state in which the scraper approaches the solids collection unit while moving in a state in contact with the bottom of the water tank.
4 is a diagram illustrating that the scraper is moved while in contact with the bottom of the water tank and reaches the solids collecting unit to block the solids collecting unit, and the valve is opened to discharge the solids.
5 shows an embodiment of the means for preventing the inflow of fish.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 shows an embodiment of an automatic solids discharge water tank 10 according to the present invention, wherein the automatic solid material discharge water tank 10 includes a water tank 100, a solids collector 210, a scraper 300, and a solid discharge 510 , a solid discharge pipe 520 and a valve 530 are included in the configuration.

First, the water tank 100 is composed of a water tank wall 110 and a water tank bottom 120 .

The material of the water tank 100 may be set to FRP or PP. When set to FRP, the water tank 100 can support the load by using the legs that can support the load. have.

Here, as shown in FIG. 2 , the tank bottom 120 may be provided as an inclined water tank bottom 120 ′ inclined downward toward the center.

In general, some of the feed supplied from aquaculture is not ingested and remains in breeding water, and about 70% of the ingested feed is discharged in the form of feces to form solids, and these solids have a high specific gravity and are precipitated.

Accordingly, the precipitated solids may be concentrated toward the central portion of the tank bottom 120 by sliding on the inclined water tank bottom 120 ′ as described above. This inclined water tank bottom 120' may be formed in a gradient of 16:1.

Next, the precipitated solids are collected, and a solids collecting unit 210 is provided on the tank bottom 120 to provide a movement path for the solids.

The solids collecting unit 210 is configured to be recessed in a predetermined volume in the water tank bottom 120 , and the upper surface is opened to flow with the water tank 100 .

In addition, one or more solids outlets 510 are formed in the solids collection unit 210 , and a solids outlet 520 is connected to the solids outlets 510 , and the solids outlets 520 are in circulation with the outside.

Here, the solids discharge pipe 520 is provided with a valve 530 to be able to open and close, and when the valve 530 is opened, the breeding water accommodated in the water tank 100 may be discharged. That is, the solids collected in the solids collection unit 210 may be discharged together when the breeding water is discharged.

Next, the scraper 300 is provided to move the solids deposited on the tank bottom 120 to the solids collection unit 210 .

In detail, since the scraper 300 is configured to push solids while being moved in contact with the water tank bottom 120, the scraper 300 must be able to maintain contact with the water tank bottom 120 while moving. do.

As a configuration for moving the scraper 300, the automatic solid discharge water tank 10 has a central fixed link 421, a horizontal connection link 422, a rotation rotor 410, a vertical connection link 423, a rotation guide ( 424) may be further included.

The central fixing link 421 is upright at the center of the water tank bottom 120 , and it is preferable to extend from the center of the water tank bottom 120 to correspond to the height of the water tank wall 110 .

Next, the horizontal connection link 422 is formed to extend from the upper end of the central fixed link 421 to the upper end side of the water tank wall 110 .

In detail, the horizontal connection link 422 has the center of the water tank 100 as the center, and the radius is from the center of the water tank 100 to the water tank wall 110 by the rotating rotor 410. It forms a coupling relationship so that it can rotate.

In addition, one side of the horizontal connection link 422 is preferably configured to be in contact with the water tank wall 110 and to be rotatable 360 degrees while sliding with the water tank wall 110 .

Next, both ends of the vertical connection link 423 are provided to form a coupling relationship with the horizontal connection link 422 and the scraper 300, respectively, so as to stand upright.

Accordingly, the scraper 300 may be rotated together as the horizontal connection link 422 is rotated.

Accordingly, for smooth rotation, the vertical connection link 423 is preferably provided in parallel with the central fixed link 421 .

Here, the length of the scraper 300 may be formed to a predetermined length to pass through the entire area of the tank bottom 120 while being rotated.

On the other hand, in the inclined water tank bottom 120 ′ as described above, the solid material deposited near the water tank wall 110 may also slide down to the central portion, so that the length of the scraper 300 extended is the water tank wall 110 . ) may be formed to a length spaced apart from the predetermined distance.

Through this, most of the solids deposited on the water tank bottom 120 can be collected without causing one end of the scraper 300 to rub against the water tank wall 110 .

The other end of the scraper 300 may be coupled to the rotation guide 424 provided in the central portion of the water tank bottom 120 to enable stable rotational movement.

In addition, since the scraper 300 may be supported from both sides by the vertical connection link 423 and the rotation guide 424 , the scraper 300 moves solids by maintaining a state in close contact with the tank bottom 120 while rotating and moving. efficiency can be increased.

On the other hand, the solids collection unit 210 may be formed with a predetermined length from the center of the water tank bottom 120 to the water tank wall 110 so that the solid material moved by the scraper 300 can be accommodated. , it is preferable to have a length equal to or shorter than the length of the scraper 300 at least.

In addition, it is preferable that the scraper 300 is rotated slowly 1-2 times a day in order to prevent the solids from re-suspending, and for this purpose, a speed reducer may be provided in the rotating rotor 410 .

Through the configuration as described above, the solids collected by the solids collecting unit 210 can be discharged by opening the valve 530 linked to the rotary rotor 410, and the valve 530 is at least a solid. It is preferable that all of these are blocked after the amount of breeding water that can be discharged is discharged.

On the other hand, as another embodiment of the automatic solids discharging tank 10 according to the present invention, the scraper 300 passes through the open upper surface of the solids collecting unit 210, and the solids collecting unit 210 is It may be formed in a predetermined size that can be blocked from the water tank 100 .

In detail, as shown in FIGS. 3 and 4 , the scraper 300 has a close contact scraper 310 that is directly connected to the vertical connection link 423 and is in close contact with the upper surface of the water tank bottom 120 and one side. While being coupled to the front of the close contact scraper 310, the other side is in contact with the upper surface of the water tank bottom 120 and a cover scraper 320 that is formed to have a width equal to or greater than the width of at least the solids collecting unit 210 is included. can

Furthermore, the automatic solids discharge tank 10 may further include a control unit 700 for operating the valve 530 according to the position or movement period of the scraper 300 .

Through the configuration as described above, the valve 530 is controlled to open when the solids collection unit 210 and the water tank 100 are blocked by the scraper 300, so that the solids are discharged into the breeding water flow. This can prevent the fish from being discharged together.

At the same time, when the valve 530 is controlled to be shut off, the scraper 300 may leave the solids collection unit 210 to continuously collect solids.

Meanwhile, the automatic solids discharge water tank 10 may further include a solid discharge water inlet 220 that is recessed to a predetermined volume in the center of the water tank bottom 120 .

Here, the solids collection unit 210 as described above may be formed to extend so that one side is circulated with the solids discharge water inlet 220 .

In detail, even at a position where the scraper 300 blocks the solids collection unit 210 , the solids discharge water inlet 220 is in circulation with the water tank 100 .

Accordingly, when the valve 530 is opened, the flow through which the breeding water is discharged may be formed from the solid discharge water inlet 220 through the solid material collection unit 210 and toward the solid material discharge port 510 .

In addition, in the water tank 100, a low-velocity fluid flow is formed to protect the breeding fish, while a high-speed fluid flow is formed in the solids outlet 510 to smoothly discharge the solids. It may be provided in a form in which the cross-sectional area is decreased in order.

That is, it is preferable that the cross-sectional areas of the solids discharge water inlet 220 , the solids collection unit 210 , and the solids outlet 510 are reduced in this order.

In addition, a fry loss prevention net 230 for preventing the fish from flowing out may be provided in the solid discharge water inlet 220 . The fry loss prevention net 230 may be provided with a mesh of a size through which breeding water and solids pass, and fish do not pass.

Furthermore, the size of the fry loss prevention net 230 may be selectively applied according to the size of the fish.

Through the configuration as described above, a low-velocity fluid flow is formed from the solids discharge water inlet 220 , and only breeding water and solids can selectively pass by the fry loss prevention net 230 .

In addition, a high-speed fluid flow is formed toward the solids outlet 510, thereby increasing the efficiency of discharging solids.

On the other hand, the automatic solid discharge tank 10 according to the present invention may further include a fish inflow prevention means 800 for driving out the fish attracted to the organic solid material from the solid material collection unit 210 .

As an embodiment of the fish inflow prevention means 800 , a device for physically generating a water current to drive out the fish, light irradiation, a vibration generator, and the like may be provided.

One or more fish inflow prevention means 800 as described above are formed on the front portion of the cover scraper 320 as shown in FIG. It may act to drive out the fish attracted to the solids collecting unit 210 as it is, and may be provided inside the solids collecting unit 210 .

However, in order to have a minimal impact on the fish breeding environment, it is preferable to operate only at the timing when the cover scraper 320 approaches the solids collection unit 210 .

On the other hand, in another embodiment of the fish inflow prevention means 800 ′, when the cover scraper 320 is made of an elastic material and passes through the solid material collecting unit 210 , a part of the cover scraper 320 is the By flowing into the inside of the solids collection unit 210, it is possible to physically generate a water current and drive out the fish.

In detail, before the cover scraper 320 passes through the solid material collecting unit 210 , one end of the cover scraper 320 comes into contact with the upper surface of the water tank bottom 120 and moves while being elastically deformed backward. can be

On the other hand, when passing through the solids collecting unit 210, one end of the cover scraper 320 is elastically restored and bent toward the inside of the solid collecting unit 210, the upper surface of the solid collecting unit 210 It may be formed with a length that is moved while being spaced apart a predetermined distance from the .

Through this, the fish floating in the solids collecting unit 210 can be driven out without re-suspending the solids on the bottom surface of the solid collecting unit 210 .

On the other hand, as a water circulation structure to be applied to the circulation filtration culture, in the automatic solid discharge water tank 10, a breeding water inlet pipe 610, a breeding water discharge pipe 630, a water level control pipe 621, and a fry loss prevention net 622 ) may be further included in this configuration.

First, the water level control pipe 621 is upright in the center of the water tank bottom 120 together with the central fixing link 421, and extends from the center of the water tank bottom 120 to a height corresponding to the set water level. It is preferable to be

In addition, the water level control pipe 621 may be provided as a tube body and surrounded by the center of the plurality of central fixing links 421 so that the upright state can be fixed, and the air is circulated in the upper part and the breeding water discharge pipe is in the lower part ( 630) may be connected and distributed with the outside.

Here, the water level of breeding water accommodated in the automatic solid discharge tank 10 according to the present invention may be increased or decreased for various reasons.

First, a natural increase/decrease may be generated, and a predetermined amount of breeding water containing solids may be discharged for every rotation through the solids outlet 510 .

In addition, breeding water may be supplied through the breeding water inlet pipe 610 provided on one side of the water tank 100 , and when the breeding water exceeds the water level set by the height of the water level control pipe 621 , the water level control It may be introduced through the upper part of the pipe 621 and discharged to the breeding water discharge pipe 630 .

Furthermore, it will be preferable that the tooth loss prevention net 230 as described above is also provided in the upper portion of the water level control tube 621 .

As described above, the present invention has a technical idea to provide an automatic solids discharge tank, and the embodiments described above with reference to the drawings are only one embodiment, respectively, and the true scope of the present invention is the claims described in the claims. will have to be decided by

10: Automatic discharge tank for solids
100: water tank
110: water tank wall
120: tank bottom
210: solids collection unit
220: solid waste water inlet
230: fry loss prevention net
300: scraper
310: adhesion scraper
320: cover scraper
410: rotating rotor
421: central fixed link
422: horizontal connection link
423: vertical connection link
424: rotation guide
510: solids outlet
520: solids discharge pipe
530: valve
610: breeding water inlet pipe
621: water level control tube
622: fry loss prevention net
630: breeding water discharge pipe
700: control unit
800: means for preventing the entry of fish

Claims (7)

a tank including a tank wall and a tank bottom;
a solids discharge water inlet formed in the center of the tank bottom to have a predetermined volume and to be formed in a shape deeper than the bottom of the tank bottom by a predetermined size;
a fry loss prevention net provided at the inlet of the solids discharge water;
a solids collection unit formed to have a predetermined volume on the bottom of the tank and extending from one side of the solid discharge water inlet to collect solids and provide a movement path for the solids;
a scraper for moving the solids deposited on the bottom of the tank to the solids collection unit while moving in contact with the bottom of the tank;
a solids outlet formed on one side of the solids collection unit;
a solids discharge pipe connected to the solids outlet to circulate the water tank with the outside;
a valve for opening and closing the solids outlet or the solids outlet;
Includes; a control unit for operating the valve according to the position or movement period of the scraper;
The scraper is
It is formed in a size that can block at least the solids collecting part from the water tank while passing through the open upper surface of the solids collecting part,
When the valve is opened, solids are discharged from the solids discharge water inlet through the solids collection unit and formed toward the solids outlet, and the valve is opened when the solids collection unit is blocked from the water tank, and the fish is Automatic discharge tank for solids, characterized in that it is prevented from being discharged together.
The method according to claim 1,
The tank bottom is
It is provided as a sloping tank floor in the form of a downward sloping toward the center,
The automatic solids discharge tank, characterized in that the precipitated solids slide from the inclined water tank bottom and are concentrated toward the center of the water tank bottom, thereby preventing the solids from remaining near the water tank wall.
The method according to claim 1,
In the automatic discharging tank for solids,
a central fixing link upright at the center of the water tank bottom, extending from the center of the water tank floor to correspond to the height of the water tank wall;
a horizontal connection link extending from an upper end of the central fixed link to an upper end side of the water tank wall, one side sliding on the water tank wall to form a coupling relationship so as to be rotatable around the center fixed link;
a rotating rotor provided to provide rotational power to the scraper;
a vertical connection link having both ends forming a coupling relationship with the horizontal connection link and the scraper, respectively, and provided to stand upright at a predetermined distance from the central fixed link;
a rotation guide provided at the center of the tank bottom to guide the scraper so that it can be stably rotated;
A reduction gear provided to rotate the scraper at a low speed; further included;
The scraper is rotated together as the horizontal connection link is rotated, and is supported from both sides by the vertical connection link and the rotation guide to move in close contact with the bottom of the water tank.
4. The method of claim 3,
In the scraper,
a close contact scraper directly connected to the vertical connection link and in close contact with the upper surface of the water tank bottom;
A cover scraper having one side coupled to the front of the close contact scraper while the other side is in contact with the upper surface of the water tank bottom and has a width equal to or greater than the width of the solid material collecting unit; .
4. The method of claim 3,
In the automatic discharging tank for solids,
Fish inflow prevention means for driving out the fish attracted to the solids collection unit; further included,
In the scraper,
a close contact scraper directly connected to the vertical connection link and in close contact with the upper surface of the water tank bottom;
A cover scraper having one side coupled to the front of the close contact scraper while the other side is in contact with the upper surface of the water tank bottom and is formed to have a width equal to or greater than the width of at least the solid material collecting part;
The cover scraper is formed to extend a predetermined length and is made of an elastic material, and when passing through the solid material collecting unit, a part of the cover scraper flows into the solid material collecting unit and generates a water current to drive out the fish,
The automatic discharging tank for solids, characterized in that the fish inflow prevention means is the cover scraper.
The method according to claim 1,
In the automatic discharging tank for solids,
a water level control pipe upright at the center of the water tank floor, extending from the center of the water tank floor to a height corresponding to the set water level;
breeding water inlet pipe to which breeding water is supplied;
The automatic discharge tank for solids, characterized in that it further comprises; a breeding water discharge pipe coupled to the lower part of the water tank bottom and circulating with the water level control pipe.
The method according to claim 1,
The cross-sectional area of the solid material discharge pipe is formed to be smaller than the cross-sectional area of the solid material discharge water inlet by a predetermined size,
When the valve is opened, a low-velocity fluid flow is formed in the vicinity of the solids discharge water inlet directly connected to the water tank to protect fish, while a high-speed fluid flow is formed at the solids outlet to smoothly discharge solids Automatic discharge tank for solids.

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