KR100699931B1 - Method for transporting live fish and Apparatus thereof - Google Patents

Abstract

A method for transporting live fish and an apparatus for the same are provided to maintain the dissolved oxygen in the transporting water(W) to a minimum amount required to enable live fish in the water to live and to maintain freshness and good quality of meat. The method for transporting live fish includes the steps of: opening a water tank(10) and putting live fish therein and sealing the water tank(10); maintaining vacuum state by exhausting the air of air layer of the water tank(10), and lowering the dissolved oxygen in the transporting water(W) to a minimum amount required to enable live fish in the water to live; supplying gas including oxygen to the transporting water(W) in the water tank to maintain the dissolved oxygen in the transporting water(W) to a minimum amount required to enable live fish in the water to live; and transporting the water tank(10) to a transporting car.

Description

Method for transporting live fish and its device {Method for transporting live fish and Apparatus

1 is a system diagram showing a first embodiment of a method for transporting live fish according to the present invention and a device thereof;

2 is a system diagram showing a second embodiment of a method for transporting live fish according to the present invention and a device thereof;

3 is a system diagram showing a third embodiment of a method for transporting live fish according to the present invention and a device thereof;

4 is a system diagram showing a fourth embodiment of a method for transporting live fish according to the present invention and a device thereof;

5 is a system diagram showing a fifth embodiment of a method for transporting live fish according to the present invention and a device thereof;

** Description of symbols for the main parts of the drawing **

10: tank 20: exhaust means

21: exhaust pipe 22: exhaust pump

30, 40: dissolved oxygen holding means 35, 45: oxygen supply source

41: filling pipe 42: water withdrawal pipe for transportation

43: dissolved oxygen control pipe 44: intake pump

48: gas-liquid separator 50: gas-liquid mixer

60: sterilization means 70: excrement collection means

80: dissolved oxygen abatement means 81: nitrogen source

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transporting live fish such as saltwater fish and freshwater fish, crustaceans such as shrimp (hereinafter referred to as "live fish"), and an apparatus thereof.

In general, in transporting live fish, a method of filling a tank with transport water such as seawater or fresh water and transporting live fish in a live fish state and a method of transporting live fish by an electric shock company or a rapid cooling yarn are used.

In the method of transporting live fish, a method of securing oxygen dissolved sufficiently by supplying oxygen in the water in order to keep the live fish normally in a live fish state is used.

However, in the process of transporting the live fish in the live fish state, the active fish is in a normal state, so the oxygen intake is increased and the amount of carbon dioxide is also increased. Therefore, the propagation of pathogens is caused by the eutrophication of the transport water. Excretion deteriorates the water quality further, degrading the health of the fish, causing stress during transportation, deteriorating freshness, meat quality and flavor, reducing the weight of live fish, and damaging live fish due to collisions between live fish. There were various problems such as lowering the value of live fish products.

In addition, in the case of transporting live fish in a live fish state, the total amount of live fish in the tank (transportation water + live fish) is only 15-20% (depending on season), and the remaining 80 ~ Since transport water occupies 85%, the transportation density is very low, thereby increasing the transportation cost.

In particular, squid has a high mortality rate during transportation, which inevitably lowers the transportation density to 3% or less.

On the other hand, the method of transporting in an instant manner has the advantage of increasing the transport density, so this method is used in Japan, but the preservation period of meat and flavor is short within 10 hours, which is rarely used in Korea.

Recently, a method of transporting a live fish in a stunned state has been developed. However, since the live fish have to settle one by one, there is a problem in that the transportation preparation time becomes very long and the transportation cost increases further.

Therefore, the object of the present invention is to maintain the dissolved oxygen of the transport water contained in the tank to the minimum required survival rate of live fish and transport the live fish to the domestic state, thereby leading to stress and excessive activity during transportation and deterioration of meat and flavor. The present invention is intended to provide a method and apparatus for transporting live fish, which can increase the transport density without preventing the commodity value.

Another object of the present invention is to provide a method and apparatus for transporting live fish, which ensures that the live fish can be transported in a fresher state by reliably preventing eutrophication of the transport water by discharging and collecting excretion of live fish generated during transportation. I will.

Still another object of the present invention is to provide a live fish transport method and apparatus for sterilizing transport water to transport live fish in a fresher state.

Another object of the present invention is to carry out the preparation for the transportation of live fish more quickly to shorten the time required for the overall transport.

The present invention comprises the steps of opening the sealable tank and injecting live fish to seal the tank to achieve the above object; Exhausting the air in the air layer of the tank to maintain the vacuum and reducing the dissolved oxygen in the transport water to the minimum survival amount required for the live fish to maintain the housework; Supplying a gas containing oxygen to the transport water of the tank to maintain the dissolved oxygen in the transport water to the minimum survival requirement of live fish; It provides a method of transporting live fish, including the step of transporting the tank to the transport vehicle.

In addition, the present invention is mounted on a transport vehicle to achieve the above object and the watertight tank; Exhaust means for discharging air from the air layer of the tank to maintain a vacuum state and reducing dissolved oxygen in the transport water to a minimum survival amount required for live fish to maintain a housework state; Provided is a transportation device for live fish including dissolved oxygen holding means for supplying a gas containing oxygen in the transport water of the tank to maintain the dissolved oxygen in the litigation water to the minimum required survival of live fish.

Hereinafter, a method for transporting live fish according to the present invention and a device thereof will be described in detail according to an embodiment shown in the accompanying drawings.

Figure 1 shows a first embodiment of a method for transporting live fish according to the present invention and a device thereof.

The method for transporting live fish according to the present embodiment includes opening a sealable water tank 10, injecting live fish, and then closing the water tank 10; Exhausting the air in the air layer (A) of the water tank (10) to maintain a vacuum state and reducing the dissolved oxygen in the transport water (W) to the minimum survival amount required for the live fish to maintain the housework state; Supplying a gas containing oxygen to the transport water (W) of the water tank (10) to maintain dissolved oxygen (DO; dissolved oxygen) in the transport water (W) to the minimum survival requirement of live fish; And transporting the water tank 10 to a transport vehicle (not shown).

In the step of opening the above-described water tank 10 and injecting the live fish into the transport water (W) and then closing the water tank 10, the airtight lid 11 is opened and the live fish is put into the transport water (W) and then sealed again. The lid 11 is closed to seal the water tank 10.

The water tank 10 is configured to be openable and sealed by the airtight lid 11.

In addition, the lower end of the tank 10 is provided with a drain pipe 12 and a train valve 13 for discharging the water and the excretion of live fish in the tank (10).

In the step of evacuating the air of the air layer (A) described above to reduce the dissolved oxygen in the transport water (W) to the minimum required survival rate of the live fish, the air is exhausted from the air layer (A) of the sealed tank (10). If possible, the dissolved oxygen in the transport water W in the water tank 10 is rapidly lowered by the live fish. As a result, the dissolved oxygen in the transport water W is lowered to the minimum survival requirement of live fish.

Normally, the dissolved oxygen content of pure water at 20 ° C. and 1 atm reaches a saturated state at 9 ppm, which decreases with increasing temperature and increases with increasing atmospheric pressure. The dissolved oxygen content of existing seawater or freshwater is about 4 ~ 6ppm, and the minimum required survival rate of live fish is 1ppm or less.

Exhaust means 20 for performing the step of lowering the dissolved oxygen in the transport water W to the minimum required survival amount includes an exhaust pipe 21 having one end in the air and the other end located in the air layer A, and the exhaust pipe 21. It comprises a vacuum pump 22 provided in 21.

At this time, the vacuum pump 22 is operated in conjunction with the detection signal of the pressure gauge (1) for detecting the pressure of the air layer (A) and the dissolved oxygen meter (Dissolved Oxygen Meter) (2) for detecting the amount of dissolved oxygen in the transport water (W) or Configured to stop.

In addition, an exhaust valve 23 for opening and closing the exhaust pipe 21 is provided on the suction end side of the vacuum pump 22, and the exhaust valve 23 is also opened and closed in conjunction with the detection signals of the pressure gauge 1 and the dissolved oxygen meter 2. Configure to

To this end, the detection signals of the pressure gauge 1 and the dissolved oxygen meter 2 are transmitted to the controller 3, and the controller 3 compares the detected signals of the pressure gauge 1 and the dissolved oxygen meter 2 with the set values to obtain a vacuum pump ( 22) and the exhaust valve 23 is configured to send a control signal.

That is, when the amount of dissolved oxygen in the pressure of the air layer A detected by the pressure gauge 1 and the amount of dissolved oxygen in the transport water W detected by the dissolved oxygen meter 2 is higher than the minimum required survival amount of the live fish, the control unit 3 The exhaust valve 23 is opened and the vacuum pump 22 is operated in accordance with the control signal of the control panel, and the minimum survival rate of the live fish with the set pressure of the air layer A and the amount of dissolved oxygen in the transport water W is set. When the amount is equal to or lower than the required amount, the exhaust valve 23 is closed and the vacuum pump 22 is stopped in accordance with the control signal of the controller 3.

The step of maintaining the dissolved oxygen in the above-mentioned transport water (W) to the minimum survival requirement of the live fish is carried out continuously while transporting the live fish.

Dissolved oxygen holding means 30 is provided to perform the step of maintaining the dissolved oxygen in the transport water (W) to the minimum survival amount of live fish.

The dissolved oxygen holding means (30) is to supply a gas containing oxygen in the transport water (W) to maintain the dissolved oxygen in the transport water (W) to the minimum required survival of live fish, the other end is located in the air tank A charge pipe 31 located in the transport water W in the 10 and a charge pump 32 provided in the charge pipe 31 are configured.

In this embodiment, when the air sucked by the intake pump 32 is supplied to the transport water (W) through the charge pipe 31, aeration occurs and air is supplied from the transport water (W) to the air layer (A). As the pressure of the air layer (A) increases while being exhausted by the vacuum pump 22 and the exhaust pipe (21).

The charge pump 32 is configured to be activated or stopped by the dissolved oxygen meter 2 in conjunction with the detection signal.

The filling pipe 31 may be provided with a filling valve 33 that can open and close it.

The filling valve 33 is also configured to open and close in conjunction with the detection signal of the dissolved oxygen meter 2.

To this end, the intake pump 32 and the intake valve 33 are connected to the control unit 3 so that the control unit 3 compares the detection signal of the dissolved oxygen meter 2 with the set value to the intake pump 32 and the intake valve 33. ) To send a control signal.

That is, when the dissolved oxygen amount in the transport water W detected by the dissolved oxygen meter 2 is higher than the minimum required survival rate of the live fish, the air supply valve 33 is closed in accordance with the control signal of the controller 3. When the filling pump 32 is stopped and the amount of dissolved oxygen in the detected transport water W is lower than the minimum required survival rate of the live fish, the daughter filling valve 33 is opened by the control signal of the controller 3. The intake pump 32 is operated so that air is supplied to the transport water W in the water tank 10 through the intake pipe 31.

Accordingly, the amount of dissolved oxygen in the transport water (W) in the water tank (10) is maintained at the minimum required survival rate of the live fish to keep the live fish in the housework state during transportation.

In addition, by installing a plurality of aeration pipes 34 formed with a plurality of aeration holes 34a at the lower end of the charging pipe 31 to be able to perform the charging of the water for transport (W) of the tank 10 evenly. desirable.

In the step of transporting the water tank 10 by the transport vehicle, the water tank 10 is transported in the state in which the water tank 10 is mounted on the transport vehicle.

While transporting the water tank 10 by the transport vehicle, the step of evacuating the air in the air layer A described above and maintaining the dissolved oxygen in the transport water W to the minimum survival requirement of the live fish are continuously performed. .

Upon arrival at the destination, open the tank (10) and put the transported live fish in the seawater or fresh water with sufficient dissolved oxygen, and the live fish in the domestic state will be active again.

According to such a method and apparatus for transporting live fish according to the present embodiment, the live fish stops its activity and transports it in a state of housekeeping, so that the live fish is not stressed and not excessively active during transportation. Freshness, meat and flavor can be maintained.

In addition, even when transporting a large number of live fish at a time compared to the conventional to prevent damage to the live fish and to maintain freshness, meat and flavor it will be able to transport live fish quickly at a low cost.

For example, the total amount of live fish in the tank (transport water + live fish) can be increased to 70-75% (sometimes slightly different depending on the season). It can be transported at a time will be able to significantly reduce the logistics cost.

Figure 2 shows a second embodiment of a live fish transport method and apparatus according to the present invention.

In this embodiment, the oxygen supply source 35 is connected in the middle of the filling pipe 31 to supply oxygen in the transport water W. Since the other parts are the same as in the above-described embodiment, the same reference numerals are used for the same parts. Are given and the detailed description is omitted.

As the oxygen supply source 35, a liquefied oxygen tank or an oxygen generator may be used. 36 in the figure is an oxygen supply valve.

The oxygen supply valve 36 is connected to the control unit 3 and closed when the dissolved oxygen level in the transport water W is higher than the minimum required survival amount of the live fish according to the above-described detection signal of the dissolved oxygen meter 2. When the dissolved oxygen in the transport water (W) is lower than the minimum required survival amount of the live fish, it is opened so that oxygen can be supplied to the transport water (W) in the water tank (10) through the filling pipe (31). .

Figure 3 shows a third embodiment of a method and a device for transporting live fish according to the present invention.

In this embodiment, the live fish is put into the transport water (W) of the sealable water tank (10) and the water tank (10) is sealed, and the dissolved oxygen in the transport water (W) is reduced to the minimum survival amount of the live fish. And the step of transporting the water tank 10 by the transport vehicle, and the water tank 10 and the exhaust means 20 for performing these steps are the same as in the first embodiment described above, The steps to keep dissolved oxygen at the minimum survival requirement for live fish and to change the means for maintaining dissolved oxygen to do this.

That is, in the step of supplying a gas containing oxygen in the transport water (W) to maintain the dissolved oxygen in the transport water (W) to the minimum required survival rate of live fish, the transport water (W) in the tank (10) is withdrawn Dissolve the gas containing oxygen in the transport water (W) so that the dissolved oxygen of the dissolved water becomes the minimum survival requirement of the live fish, and then supply it to the water tank (10) so that the dissolved oxygen in the transport water (W) is always live. It is to maintain the minimum survival rate of the kind.

Dissolved oxygen holding means 40 for this purpose is a charge pipe (41) having one end in the air and the other end is located in the transport water (W), withdrawal of transport water connected to the lower end of the water tank (10) Dissolved oxygen control pipe 43 connecting the pipe 42, the filling pipe 41 and the transport water outlet pipe 42, the filling pump 44 installed in the middle of the filling pipe 41, and the dissolved It is configured to include an oxygen supply source 45 which is installed in the middle of the oxygen control pipe 43 and supplies oxygen to the transport water (W) drawn out.

The charge pump 44 is connected to the control unit 3 to which the dissolved oxygen system 2 is connected as in the above-described embodiment, and is started or stopped by the control signal of the control unit 3 according to the detection signal of the dissolved oxygen system 2. It is configured to be.

A transport water draw valve 42a for opening and closing the transport water draw pipe 42 is installed at a lower end of the transport water draw pipe 42. The transport water outlet valve 42a is also configured to be opened and closed controlled by the control unit 3.

An oxygen supply valve 46 is installed between the oxygen supply source 45 and the dissolved oxygen control tube 43.

The oxygen supply valve 46 is connected to the control unit 3 is configured to be opened and closed by the control of the control unit 3 according to the detection signal of the dissolved oxygen meter (2).

That is, the air pump 44, the transport water withdrawal valve 42a, and the oxygen supply valve 46 have a minimum survival amount of live fish whose dissolved oxygen in the transport water W detected by the dissolved oxygen meter 2 is set. If it is lower, it is activated and opened. If the dissolved oxygen in the transport water (W) is higher than the minimum required survival rate of the live fish, it is stopped and closed, and the dissolved oxygen in the transport water (W) in the tank (10) is always live. It is configured to maintain the minimum survival rate of the species.

In this embodiment, as in the first embodiment described above, the dissolved oxygen in the transport water (W) in the water tank (10) is reduced to the minimum required survival rate of the live fish and the step of introducing the live fish is followed by an intake pump. When the 44 is operated, the transport water W in the water tank 10 is drawn out through the transport water outlet pipe 42 and supplied back into the water tank 10 through the dissolved oxygen control pipe 43 and the filling pipe 41. do.

At this time, the extracted transport water (W) is in a state where the dissolved oxygen is very lower than the minimum survival requirement of the live fish, and as the oxygen supplied from the oxygen source 45 is dissolved, the dissolved oxygen rises to the minimum survival requirement of the live fish. do.

As such, the transport water in which dissolved oxygen has recovered to the minimum required survival rate of live fish is supplied back into the tank 10 through the charging pipe 41 so that the dissolved oxygen in the transport water W in the tank 10 survives the live fish. Live fish that are kept at minimum requirements and transported continue to remain in the domestic state.

The lower end of the filling pipe 41 is preferably connected to the installation of the aeration pipe 47 formed with a plurality of aeration holes 47a to uniformly perform the charging of the water for transport (W) of the tank (10). Do.

Meanwhile, in the process of transporting the dissolved oxygen-controlled transport water through the dissolved oxygen control tube 43 through the dissolved oxygen control tube 43 and the filling pipe 41, the gas containing oxygen is dissolved in the transport water. Since the gas is not mixed with the transport water, it is preferable to provide a gas-liquid separator 48 between the dissolved oxygen control pipe 43 and the filling pipe 41.

The gas-liquid separator 48 is a container 48a in which the dissolved oxygen control tube 43 is connected to one side and an upper end of the filling pipe 41 is connected to the lower end, and an upper end and a dissolved oxygen control tube of the container 48a. It consists of the conveyance pipe 48b connected between 43.

The gas-liquid separator 48 is divided into the lower water layer and the upper air layer by the difference in specific gravity when the transport water flowing in the state in which the water layer and the air layer are mixed flows into the middle portion of the container 48a. 48b) is returned to the upstream side of the dissolved oxygen control tube 43 to be dissolved again in the transport water, and only the lower transport water is supplied to the filling pipe 41 so that oxygen is supplied into the tank 10 together with the transport water. Will be suppressed.

In addition, an air pump 48c for conveying oxygen to the upstream side of the dissolved oxygen control tube 43 is provided in the middle of the conveying pipe 48b.

Between the upper end of the vessel 48a of the gas-liquid separator 48 and the transfer tube 48b, a screen 48d made of high attack is installed, and oxygen in the upper portion of the vessel 48a is returned to the transfer tube 48b. It is preferable to prevent the water for transportation below the container 48a from being conveyed to the conveying pipe 48b.

Here, the high attack constituting the screen 48d has a service life of about one year, so when the service life has expired, it should be replaced. The enlarged display is shown in FIG. 3 to facilitate the replacement. As described above, it is preferable to attach to one end of the screen mounting pipe 48e provided with flanges at both ends, and connect the screen mounting pipe 48e between the cut transport pipes 48b.

In this embodiment, the dissolved oxygen is drawn out of the transport water (W) in the tank (10) in which the dissolved oxygen is significantly lower than the minimum survival requirement of the live fish, and oxygen is supplied and dissolved to adjust the dissolved oxygen to the minimum survival requirement of the live fish. The transport water is supplied to the water tank 10 through the filling pipe 41, so that dissolved oxygen in the transport water W in the water tank 10 is maintained at the minimum necessary survival rate of the live fish, and the live fish in transport maintains the housework state. Done.

At this time, if the amount of oxygen required to adjust the dissolved oxygen in the transport water (W) to the minimum living requirement of live fish is 10, the amount of oxygen separated from the gas-liquid separator 48 and conveyed through the conveying pipe (48b) is 5, The amount of oxygen supplied from the oxygen supply source 45 may be initially set to 10 and then reduced to 5.

Figure 4 shows a fourth embodiment of a method of transporting live fish and a device according to the present invention.

In this embodiment, the process of mixing the transport water (W) and oxygen in order to effectively dissolve oxygen in the transport water (W) supplied in the step of maintaining the dissolved oxygen in the transport water (W) to the minimum survival requirement of live fish Further, since the other steps and device configuration is the same as the above-described embodiment, the same reference numerals are assigned to the same parts, and detailed description thereof will be omitted.

In the present embodiment, the gas-liquid mixing means 50 for promoting the mixing of the transport water and the gas is installed in the middle of the dissolved oxygen control tube 43.

In FIG. 4, the gas-liquid mixing means 50 is provided with a spiral guide 52 having a plurality of through holes 53 formed inside the mixing pipe 51, but is not necessarily limited thereto. Any kind of thing can be used as long as the flow path of the transport water and gas passing through the pipe 43 or the agitation occurs.

The installation of the gas-liquid mixing means 50 facilitates the dissolution of oxygen in the transport water passing through the dissolved oxygen control pipe 43, so that the dissolved oxygen in the transport water can be more effectively controlled while supplying a small amount of oxygen. .

In addition, in the present embodiment, by disinfecting the pathogen in the transport water by installing a sterilization means 60 in the middle of the dissolved oxygen control tube 43 to prevent the transport water (W) is contaminated by the pathogen fresh fish fresh It will be able to transport in a healthy state.

The sterilization means 60 is a sterilization tank 61 connected with an inlet port 61a and an outlet port 61b in the middle of the dissolved oxygen control tube 43, and an ultraviolet ray that irradiates ultraviolet rays to the sterilization tank 61. It comprises a pre-generator 62 and / or ozone generator 63 for supplying ozone.

Here, at least the surface of the sterilization tank 61 facing the ultraviolet generator 62 is made of a transparent material.

In addition, ozone generated from the ozone generator 63 is supplied to transport water through an ozone supply pipe 64 installed inside the sterilization tank 61 to sterilize.

In addition, the bottom of the drain pipe 12 is provided with sediment collecting means 70 for collecting the sediment precipitated on the bottom of the tank 10, such as excrement of live fish.

The sediment collecting means 70 is configured to include a sediment discharge pipe 71 connected to the lower end of the drain pipe 12, and a condensate condensing tank 72 connected to the sediment discharge pipe 71 to aggregate the discharged sediment. do.

The excretion agglomeration tank 72 is provided with an agglomeration excretion discharge tube 73 for discharging the agglomeration excretion and an on / off valve 74 for opening and closing the agglomeration excretion discharge tube 73.

In addition, the upper portion of the excrement condensing tank 72 is connected to the transport water withdrawal pipe 42 to the transport water collection pipe 75, the opening and closing valve 76 is installed in the middle.

The sediment collection means 70 discharges the sediment, such as the sediment precipitated at the bottom of the water tank 10, agglomerates in the excrement agglomeration tank 72 to separate it from the transport water, and the coagulant excrement E is a coagulant excretion discharge tube 73 Discharge through the collection process, and the transport water (W) to the water tank (10) through the transport water recovery pipe 75, the transport water withdrawal pipe 41, the dissolved oxygen control pipe 43 and the filling pipe (41). To supply.

Here, the closing valve 76 is closed in the state in which the excretion flowing into the excrement condensing tank 72 is not sufficiently agglomerated, and the aggregation valve is sufficiently formed so that the agglomerated feces E and the transport water W are sufficiently separated. (76) is opened so that only transport water (W) separated from the flocculant (E) is returned.

Figure 5 shows a fifth embodiment of a method of transporting live fish and a device according to the present invention.

In this embodiment, the dissolved oxygen in the transport water (W) can be rapidly reduced in the step of reducing the dissolved oxygen in the transport water (W) to the minimum survival requirement of live fish. Since it is the same as an example, the same code | symbol is attached | subjected about the same part and detailed description is abbreviate | omitted.

In this embodiment, the dissolved oxygen reducing means 80 for supplying a gas capable of rapidly reducing the dissolved oxygen in the middle of the dissolved oxygen control tube 43 in order to rapidly reduce the dissolved oxygen in the transport water (W) is provided do.

The dissolved oxygen reducing means (80) is a nitrogen supply source (81) connected to the middle of the dissolved oxygen control pipe (43), and a nitrogen supply valve (82) for opening and closing between the nitrogen supply source (81) and the dissolved oxygen control pipe (43). It is configured to include).

The nitrogen source 81 may use a nitrogen tank or a nitrogen generator.

In addition, by using one oxygen / nitrogen generator in conjunction with the oxygen source 48, the oxygen generator may be used as the oxygen source 48, and the nitrogen generator may be used as the nitrogen source 81.

In the present embodiment, the process of sharply reducing the dissolved oxygen in the transport water (W) may be performed before the step of injecting the live fish into the water tank 10 or after the live fish are introduced into the water tank 10. It is done together.

First, since dissolved oxygen in the transport water (W) is much higher than the minimum required survival rate of live fish, the oxygen supply valve (46) is closed by the detection signal of the dissolved oxygen system (2) and the transport water outlet valve (42a) is opened. In addition, the intake pump 44 is operated and the nitrogen supply valve 82 is opened.

Accordingly, the transport water (W) of the water tank 10 is drawn out to the transport water withdrawal pipe 42 and sterilized by the sterilization means 60 and then passed through the dissolved oxygen control pipe 43 to the nitrogen supply source 81. Nitrogen supplied from is mixed with the transport water (W), the dissolved oxygen in the transport water (W) passing through the dissolved oxygen control tube 43 and the gas-liquid mixing means 50 is sharply reduced.

At this time, dissolved oxygen in the transport water (W) passing through the dissolved oxygen control tube 43 may reach up to "0".

As such, the transport water (W) in which the dissolved oxygen is drastically reduced is separated from nitrogen while passing through the gas-liquid separator (48) and supplied to the transport water (W) in the water tank (10) through the filling pipe (41), and mixed with the water tank (10). ), The dissolved oxygen in the whole transport water W decreases abruptly.

When the dissolved oxygen of the whole transport water W in the tank 10 decreases rapidly and decreases below the minimum required survival rate of the live fish, the nitrogen supply valve 82 is closed in accordance with the detection signal of the dissolved oxygen meter 2, and the oxygen supply valve As shown in the fourth embodiment, the water 46 is opened and the transport water W in which the dissolved oxygen is adjusted to the minimum survival requirement of the live fish in the process of passing through the dissolved oxygen control tube 43 is stored in the tank 10. While being supplied to and mixed with the transport water (W), the dissolved oxygen of the entire transport water (W) in the water tank (10) is maintained at the minimum survival requirement of live fish.

At this time, if the live fish is pre-injected into the water tank 10 and the water tank 10 is in a closed state, the live fish that has been introduced leads to a housework state due to the sudden drop in dissolved oxygen, and if the water tank 10 is open, the live fish When the air is introduced and the water tank 10 is sealed, even though air is present in the air layer A of the water tank 10, the dissolved oxygen in the transport water W is adjusted to the minimum survival amount of the live fish. Immediately leads to the lyrics.

Since the transport step by the transport vehicle is made in the same manner as in the above-described embodiments, when arriving at the destination open the water tank 10 and put the transported live fish in seawater or fresh water with sufficient oxygen dissolved live fish in the domestic state Will be active again.

As described above, according to the method and apparatus for transporting live fish according to the present invention, injecting transport water such as seawater or fresh water into a sealable tank and transporting live fish into the live fish, the surviving oxygen of the transport water By maintaining the minimum required amount of live fish is to maintain the housework state is not stressed during the transportation of the live fish and do not excessive activity, there is an effect that can maintain the freshness, meat and flavor as it is.

In addition, according to the present invention, the method and apparatus for transporting live fish can prevent damage to live fish and maintain freshness, meat, and flavor even when transporting a large number of live fish at a time, compared to the related art. There is an effect that can be transported quickly.

In addition, according to the method and apparatus for transporting live fish of the present invention, it is possible to reliably prevent eutrophication of transport water by discharging and collecting excretion of live fish generated during transport, thereby enabling the live fish to be transported in a fresher state. have.

In addition, the live fish transport method and apparatus of the present invention has the effect that can be transported in a fresh state by sterilizing the transport water.

In addition, according to the present invention, by shortening the time used to initially reduce the dissolved oxygen in the transport water to the minimum survival requirement of the live fish, the transport preparation of the live fish can be performed more quickly, thereby reducing the time required for the overall transport. It is effective to be.

Claims (27)

Opening the sealable water tank 10, injecting live fish, and then sealing the water tank 10; Exhausting the air in the air layer (A) of the water tank (10) to maintain a vacuum state and lowering the dissolved oxygen in the transport water (W) to the minimum survival amount required for live fish to maintain the housework state; Supplying a gas containing oxygen into the transport water (W) of the water tank (10) to maintain the dissolved oxygen in the transport water (W) to a minimum survival requirement of live fish; Transporting the tank 10 in a transport vehicle. The method of claim 1, The oxygen-containing gas is a live fish transport method, characterized in that the air in the atmosphere. The method of claim 1, The oxygen containing gas is a live fish transport method, characterized in that the oxygen. The method of claim 1, The step of maintaining the dissolved oxygen in the transport water (W) to the minimum survival amount of live fish, Withdraw the transport water (W) in the water tank (10) to dissolve the gas containing oxygen in the transport water so that the dissolved oxygen of the dissolved water is adjusted to the minimum survival requirement of live fish, and then back to the water tank (10) Live fish transportation method characterized in that the supply box. The method of claim 4, wherein The oxygen containing gas is a live fish transport method, characterized in that the oxygen. The method according to claim 4 or 5, The transport water mixed with the gas containing oxygen passes through the dissolved oxygen control tube 43 to separate the gas containing oxygen not dissolved in the transport water from the transport water to supply only the transport water to the water tank 10. A live fish transportation method characterized in that. The method of claim 6, Live fish transportation method characterized in that the sterilization treatment for the transport water passing through the dissolved oxygen control tube (43). The method of claim 6, The method of transporting live fish, characterized in that for supplying a gas capable of sharply reducing the dissolved oxygen of the transport water to the dissolved oxygen control pipe (43). The method of claim 8, The method of transporting live fish characterized in that the gas capable of sharply reducing the dissolved oxygen of the transport water is nitrogen. The method of claim 8, Collecting feces precipitated at the bottom of the tank 10 to prevent the contamination of the transport water in the tank characterized in that the transportation of live fish. The method of claim 8, The method of transporting live fish, characterized in that the discharge of the excrement settled on the bottom of the tank (10) to prevent the contamination of the transport water in the tank. The method of claim 11, The condensate discharged from the water tank (10) is condensed to separate the transport water and condensation excretion, the condensation excrement is collected, and the transport water is transported to the water tank characterized in that the transport method. A water tank 10 mounted on the transport vehicle and capable of being sealed; Exhaust means (20) for discharging air from the air layer of the water tank (10) to maintain a vacuum state and reducing dissolved oxygen in the transport water (W) to a minimum survival amount required for live fish to maintain a housework state; Transportation of live fish including dissolved oxygen holding means for supplying a gas containing oxygen in the transport water (W) of the tank (10) to maintain the dissolved oxygen in the litigation water (W) to the minimum required survival rate of the live fish Device. The method of claim 13, wherein the exhaust means 20, An exhaust pipe 21 having one end in the atmosphere and the other end located in the air layer; Live fish transportation device characterized in that it comprises a vacuum pump 22 installed in the exhaust pipe (21). The method of claim 14, wherein the vacuum pump 22 And a pressure gauge (1) for detecting the pressure of the air layer and a detection signal of the dissolved oxygen meter (2) for detecting the amount of dissolved oxygen in the transport water. The method of claim 13, wherein the dissolved oxygen holding means, A charge pipe 31 having one end in the air and the other end located in the transport water W in the tank 10; Live fish transportation device characterized in that it comprises a filling pump (32) installed in the filling pipe (31). The transport apparatus for live fish according to claim 13, wherein the oxygen supply source is connected in the middle of the filling pipe. The method of claim 13, wherein the dissolved oxygen holding means, A charge pipe 41 having one end in the atmosphere and the other end located in the transport water W; Transport water withdrawal pipe 42 is connected in communication with the bottom of the tank 10, Dissolved oxygen control pipe 43 for connecting the filling pipe 41 and the withdrawal pipe 42, An intake pump 44 provided in the middle of the transport water outlet pipe 42; The apparatus for transporting live fish, characterized in that it comprises a gas mixer (45) for mixing the gas containing oxygen in the transport water (W) drawn out in the middle of the dissolved oxygen control pipe (43). The method of claim 13, wherein the dissolved oxygen holding means, A charge pipe 41 having one end in the atmosphere and the other end located in the transport water W; Transport water withdrawal pipe 42 is connected in communication with the bottom of the tank 10, Dissolved oxygen control pipe 43 for connecting the filling pipe 41 and the withdrawal pipe 42, An intake pump 44 provided in the middle of the transport water outlet pipe 42; The device for transporting live fish, characterized in that it comprises an oxygen supply source (48) for supplying oxygen in the transport water (W) drawn out of the dissolved oxygen control tube (43). The method of claim 18 or 19, Installed in the middle of the dissolved oxygen control pipe 43 is a transport device for live fish, characterized in that it further comprises a gas-liquid mixer (50) for mixing the gas containing the transport water and oxygen. The method of claim 20, A gas-liquid separator installed between the filling pipe 41 and the dissolved oxygen control tube 43 to separate a gas containing oxygen not dissolved in the transport water from the transport water so that only the transport water is supplied to the water tank 10. An apparatus for transporting live fishes, characterized in that it further comprises (47). The method of claim 20, Installed in the middle of the dissolved oxygen control tube 43 is a transport device for live fish, characterized in that it further comprises a sterilization means (60) for sterilizing pathogens in the transport water. The method of claim 20, Installed in the middle of the dissolved oxygen control pipe 43 is a transportation device for live fish, characterized in that it further comprises a dissolved oxygen reducing means (80) for reducing the dissolved oxygen of the transport water. The method of claim 23, wherein the dissolved oxygen reducing means 80, Nitrogen supply source 81 is connected to the middle of the dissolved oxygen control tube 43, and the on-off valve 82 for opening and closing between the nitrogen supply source 81 and the dissolved oxygen control tube 43, characterized in that it comprises a Transportation of live fish. The method of claim 20, Live fish transport device characterized in that it further comprises a waste collection means for collecting the excrement deposited on the bottom of the tank (10) (70). The method of claim 25, wherein the excrement collection means 70, A waste discharge pipe 71 connected to the drain pipe 12 installed at the bottom of the water tank 10; The excretion discharge pipe 71 is connected to the excretion agglomeration tank 72 to aggregate the excrement comprises a live fish transportation device characterized in that it comprises a. The method of claim 26, At the lower end of the waste condensation tank 72, an agglutination waste discharge pipe 73 for discharging the agglutination waste and an on-off valve 74 for opening and closing the agglomeration waste discharge pipe 73 are installed. The upper end of the excrement condensing tank 72 is connected to the transport water collection pipe (75) to the transport water withdrawal pipe (42), and the transport water collection pipe (75) is characterized in that the opening and closing valve 76 is installed Live fish transportation device.

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