JPH0323125B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a novel live fish transport vehicle for transporting live fish in large quantities.

(Conventional technology) Recently, it has become possible to transport fish such as sea bream, yellowtail, and flounder alive from their farming areas to consumption areas over relatively long distances using live fish transport vehicles. .

This live fish transport vehicle has a water tank equipped with
Each fish is filled with seawater that is suitable for the fish being transported, the fish are allowed to swim in this seawater, and in order for the fish to survive for a long time, the oxygen consumed by the fish is replenished, the carbon dioxide emitted by the fish is removed, and the An artificial cooling system was used to keep the water temperature constant, and a method was used to create a flow so that the seawater in the tank did not stagnate.

(Problems to be Solved by the Invention) As mentioned above, an environment in which fish can survive is artificially created in the tank of a live fish transport vehicle using the conventional method. Therefore, there is a limit to the amount. That is, if a large number of fish are placed in an aquarium and allowed to swim, the fish will not be able to swim in a certain direction and will collide with each other, resulting in injury and death. Therefore, there was a problem that the number of fish that could swim was limited, and as a result, only a small amount of fish could be transported alive.

One way to solve this problem to some extent is to fill an aquarium with many cages, partition the cages so that a single fish can remain stationary, and swim within these partitioned compartments. A method has been developed to transport each fish individually, and it has recently become possible to transport relatively large numbers of fish at the same time. However, even with this method, there is the problem that the fish are easily injured when they hit the cages, and it is also a hassle to use a large number of cages. There is the extremely uneconomical problem of not being able to do so.

In view of the above-mentioned problems with the conventional live fish transport method and live fish transport vehicle, this invention improves the storage density for transporting fish alive by making the environment in the aquarium close to the natural environment suitable for the fish to be transported. An object of the present invention is to provide a new live fish transport method and a live fish transport vehicle that can transport a large amount of live fish.

(Means for Solving the Problems) For this purpose, in this invention, the inner corner of the water tank to be mounted is curved when viewed from a plane, the inner shape of the water tank in plane is approximately oval, and the curved corner is curved. This is a live fish transport vehicle in which a motor screw is arranged to generate a water flow, and a filter tank is provided in the center of the aquarium with a substantially elliptical shape approximating the planar inner shape of the aquarium. A track-shaped circulation waterway is formed by the outer wall of the filtration tank, the inner surface of the outer wall of the water tank, and the bottom of the water tank, and a circulation pump, a heat exchanger, and an automatic oxygen dissolving device are installed between the circulation waterway in the water tank and the filtration tank. In addition to providing a passage, the motor screw is of a variable type, and by changing the rotational speed of the screw, the water flow rate is made variable.

(Function) According to the transport vehicle of the present invention, a water flow is formed in the circulating waterway in the aquarium, and the fish are made to swim within this circulating water flow. All the fish swim in substantially the same direction and can be lined up in a stationary state, so that a large number of fish can be swimming and transported without being harmed in a near natural state in the aquarium.

(Example) The details of the present invention will be explained below using examples shown in the drawings.

In the figure, 1 is the chassis of a transport vehicle equipped with a driver's cab 2, and an FRP water tank 3 is mounted on the chassis 1. The aquarium 3 has a machine room 4 at the front and an ice storage room 5 for fresh fish at the rear.

The portions of the aquarium 3 that constitute the pair of opposing corners 6, 6 are filled with a heat insulating layer so that the inner surface thereof is curved when viewed from a plane, while the portions that constitute the pair of opposite corners 7, 7 are In this case, partition nets 8, 8 made of stainless steel are stretched in a curved shape in a plane, and the inside shape of the water tank 3 in a plane is formed into a substantially elliptical shape.

At the center of the water tank 3, there is provided a filter tank 9 having a substantially elliptical planar shape that approximates the planar shape of the water tank 3, and a large number of filtering materials 10 are housed in the tank.

The outer wall of the filter tank 9, the inner surface of the outer wall of the water tank 3, and the bottom 11 of the water tank 3 form a track-shaped circulation waterway 12.

A circulation path 13 is provided between the circulation waterway 12 and the filtration tank 9 in order to circulate seawater and filter impurities in the seawater. This circulation path 13 includes a heat exchanger 14 for keeping the temperature of the seawater constant, a circulation pump 15, and an automatic oxygen dissolving device 16 for supplying new oxygen into the seawater. Therefore, the seawater is led from the upper part of the water channel 12 into the filter tank 9 by the overflow effect, impurities are filtered out by the filter medium 10, and is led into the circulation path 13 by the circulation pump 15 via the heat exchanger 14. The oxygen is circulated through the water channel 12 via an automatic oxygen dissolving device.

In the figure, 17 and 17 are the corner portions 7 formed by the partition net 8.
A variable motor screw is installed in the part that constitutes the circulation waterway 12 by rotating this screw.
A water flow is generated inside the screw, and the flow speed can be variably adjusted by changing the rotation speed of the screw. In the illustrated embodiment, the water flow is generated by this screw, but the water flow is mainly generated by the return flow from the circulation path 13, and this screw is used for adjusting the flow rate. Good too.

In addition, 18 in the figure is a soundproof generator, which serves as a power source for each device. Reference numerals 19 and 19 are oxygen dispersers, which also supply new oxygen into the water. 20 is an anti-foaming device, which prevents the upper part of the aquarium from being caused by carbon dioxide gas generated by fish breathing underwater, bubbles generated by the automatic oxygen dissolving device 16 or oxygen disperser, and impurities discharged by the fish. Many bubbles are generated, and these bubbles are discharged by a bubble discharge pipe (not shown), but the bubbles are once introduced to the defoaming device 20, where the bubbles are extinguished and impurities are discharged to the outside. Furthermore, 21 in the figure is an inspection window. In addition, numerals 22 and 22 in the figure are partition plates with a large number of holes, which are removable and can be attached and detached, so that the inside of the aquarium 3 can be divided and the fish can be placed separately according to the type of fish or the size of the fish. can.

According to the present invention constructed as described above, the temperature of the water in the track-shaped circulation channel 12 is controlled by the heat exchanger 14 of the circulation channel 13, and fresh oxygen is supplied by the automatic oxygen dissolving device 16. The water is circulated by the circulation pump 15, and the flow direction of the water is determined by its discharge force. At this time, the water in the water channel 12 overflows from the upper part of the filtration tank 9 and is guided into the filtration tank 9, filtered, and led to the circulation path 13.

On the other hand, by operating the variable motor screw 17 provided at the corner of the water tank 3, a water flow is generated in the water in the circulation channel 12, and by changing the rotation speed of this screw 17. , adjust the flow rate. Therefore, it is possible to adjust the optimal flow rate for the fish depending on the type of fish and also the size of the fish.

(Effects of the Invention) As described above, in the method and transport vehicle of the present invention, a circulation waterway is provided in the aquarium, a water flow circulates in this waterway, and the fish are made to swim in this circulating water. , the fish can be transported in a state similar to their natural environment, and the fish can be kept in a static swimming state, so there is less risk of fish colliding with each other even when a large number of fish are swimming, and the storage density that can be transported is increased. , which has the great effect of transporting large quantities of live fish at once. Furthermore, by appropriately changing the rotational speed of the variable motor screw, various water flows can be generated, making it possible to achieve the optimal water flow for various types and sizes of fish, making it possible to use live fish transport vehicles, which are currently expensive. This has the effect of expanding the range of fish species that can be handled and making full use of transportation vehicles.

[Brief explanation of the drawing]

The drawings show an embodiment of the live fish transport vehicle of the present invention in which the method of the present invention is carried out. Fig. 1 is a side view of the vehicle with a part cut away, and Fig. 2 is a cross-sectional plan view of the aquarium portion. It is. 3...Aquarium, 7...Corner, 8...Partition net, 9...
...filtration tank, 12...circulation waterway, 13...circulation path,
15...Circulation pump, 16...Automatic oxygen dissolving device, 17...Variable motor screw.

Claims (1)

[Claims] 1. The inner corner of the water tank to be mounted is curved when viewed from a plane, and the planar inner shape of the water tank is approximately elliptical.
A live fish transport vehicle in which a motor screw is disposed at the curved corner to generate water flow, and the center of the aquarium has a substantially elliptical shape that approximates the substantially elliptical shape of the planar inner shape of the aquarium. A filtration tank is provided, and the outer wall of the filtration tank, the inner surface of the outer wall of the tank, and the bottom of the tank constitute a track-shaped circulation waterway, and a circulation pump, a heat exchanger, and a A live fish transportation vehicle, characterized in that a circulation path including an automatic oxygen dissolving device is provided, and the motor screw is of a variable type, and the flow rate of water is made variable by changing the rotational speed of the screw.