JPS6055347B2 - Cooling seawater supply device to live fish tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for supplying cooling seawater to a live fish tank.

HA′ −J−−V゛゜re＾人、゛ 一”゛ Ai ”
, Ichigo! Taking an example of something that is hidden in the sky,
As shown in Figure 1, a seawater supply pipe ■ and an overflow port ■ are installed in the live fish hold I, and seawater is supplied using a seawater pump ■. Time,
Due to the suction effect, or in other words, negative pressure, the precipitated oxygen becomes bubbles in the seawater and escapes, and the dissolved oxygen in the seawater gradually decreases, which can kill the fish in the fish hold. In addition, when going fishing in tropical regions, the survival rate of fish will be greatly reduced due to the rise in water temperature in the fish hold, so it may be possible to cool the fish using a freezing device, so the applicant first proposed the first method. As shown in FIG. 2, a fountain pipe 4 is disposed on the inner periphery of the upper edge 3 of the cylindrical casing 2, facing the vertical center line 0-0 of the casing, and opening downward from the fountain pipe 4. A hopper part 6 having an opening 5 at the bottom is provided, an exhaust port 8 is provided in the part of the housing wall 7 that is in the shadow of the hopper part 6, and a lid that can be placed over the upper opening 9 of the housing 2 is provided. We have devised a seawater supply system for a live fish hold in which a blower 12 is installed on the top of the housing 11 to blow air into the housing 2, and when the blower 12 is operated, air passes through the edge material 1 of the live fish hold and feeds the live fish. It is blown into the hold, where the seawater supply pipe 1
When seawater is sent from 4 to the fountain pipe 4 and injected into the housing 1, the particles of the injected seawater collide with the air blown by the blower 12 and dissolve oxygen well; The jetted seawater is evaporated by the air blown in by the blower 12 and the seawater temperature is lowered.
If a wire mesh 13 is installed in the
However, the device is bulky and difficult to use on fishing boats. Loading, unloading, and storage in relatively narrow spaces, such as the amount of dissolved oxygen, decrease in seawater temperature, and clogging of fountain tubes due to injection from fountain tubes, etc. There was still room for improvement.

The object of the present invention is to provide a cooling water supply system for a live fish tank which is further improved from the above points. Figure 3,
The configuration will be explained based on an example shown in FIG.
As shown in Fig. 3, this system for supplying cooling seawater to a live fish tank has an exhaust port a on the lower peripheral wall, and a hopper receiving part b protruding inward from the upper part of the exhaust port a. Cylindrical body A
, a hopper body B having a flange c on its upper edge that can be engaged with the hopper receiving part b, and a motor e installed in the center of the upper opening d (the motor may be an electric motor, but it is currently small and produces a large horsepower). Since a hydraulic motor is superior to the above, a hydraulic motor is used in this embodiment.

), a fan f is attached to send air downward, a seawater sprinkler pipe g is installed vertically around the lid, and a lower opening and an edge h can be engaged with the upper edge 1 of the cylindrical body A. part C, and a seawater dispersion holder D placed on the flange part c of the hopper body B and housed in the cylindrical body A. perforated plate J
,, j2, as shown in the enlarged view in Figure 3, both sides of the core material K, which is a strip plate bent in a zigzag shape, are
A rectangular bleaching bag 1 is filled with absorbent cotton m and covered with cloth pieces n, and a large number of unit zigzag pieces p are arranged vertically. 5 unit zigzag pieces p are arranged in parallel so as to face each other, and a seawater drop hole q is formed between each unit zigzag piece p. In addition, in order to make loading and unloading into a narrow fishing boat even easier, the lid part C should be replaced with the upper part C.
It is preferable that the cylindrical body A and the lower part C2 be able to be divided into 4 parts, and that they can be integrated into 4 parts using bolts r or fasteners s.
As shown in FIG. 4, if the cylindrical body A has a square cylindrical shape as shown in FIG. It is best to fix it using bolts. In addition, the perforated plates 1 and 2 on the upper and lower sides of the seawater dispersion holding body D are made of aluminum expansion metal, although the one shown in Figure 4 has many circular holes U. But of course it's fine.

Note that a fixing tool v is provided at the joint between the cylindrical body A and the lid portion C to achieve integration. Since this embodiment has the above-mentioned configuration, the cylindrical body A is first fixed to the rim material V of the live fish hold 1 of the fishing boat (see Fig. 1), as shown in Fig. 3. Then, insert the hopper body B inside, engage the flange part c with the hopper receiving part B in the cylindrical body A, and insert the seawater dispersion holder D, which has been assembled in advance, thereon, and then Put on the lid part C to finish the installation.

Then, when the fan f is operated, air is blown into the live fish hold through the live fish hold edge material V of the live fish hold. Then, when seawater is sent to the seawater sprinkling pipe and sprinkled into the cylindrical body A, the sprayed seawater particles collide with the air blown in by the fan f and fall into the live fish holding while dissolving oxygen well. Also, the evaporation of the seawater particles is promoted by the air blown in by the fan f, which lowers the seawater temperature, but since there is a seawater dispersion holder D on the way,
A part of the dispersed seawater falls into the live fish holding through the seawater drop hole q in the holder D, but a part falls into the cloth piece n on the side of the unit zigzag piece p of the holder D. Even if watering and watering are uneven, the capillary action of the absorbent cotton inside will allow the seawater to spread throughout the seawater dispersion holding body D, and will be sufficiently exposed to the air that is subsequently blown into the live fish hold, providing sufficient oxygen. As it dissolves, it gradually falls into live fish hold I, while the falling air is
As the pieces of cloth come in sufficient contact with the seawater contained in the cloth pieces n and evaporate the seawater, the heat of evaporation is taken away, and the temperature decreases further as they are blown into the live fish tank 1, so that they are simply blown down. It is possible to keep the temperature in the live fish hold much lower and to increase the amount of dissolved oxygen than injecting seawater into the moving air.
According to experiments, the atmospheric temperature (June 20, 1932) was 30.
0℃, adiabatic saturation temperature 25.0℃
Downward wind speed by the fan in the device 7
．． 5RIsec Total pressure in the device (at the fan outlet)
Static pressure in 12Twt1 water column (Pitot tube) device
Air volume in the 6-order water column device: Approximately 2877 t'I
Inlet fresh water temperature in the TrLin device: 30°C Amount of fresh water in the device: 500 f1Hr Outlet fresh water temperature in the device: 25°C The above results were obtained, and a temperature drop of approximately 5°C was obtained through the fresh water experiment, which was below the upper limit of the survival temperature for sardines, 2rc. Since the atmosphere in the high water temperature region of the Pacific Ocean in summer is approximately 30°C, it was found that the cooling effect can be sufficiently achieved even when used in this region.

Although this embodiment shows a structure that can be freely installed on the port edge material 2, it may also be installed in advance on the deck or inside the ship. In this case, the seawater collected at the bottom of the cylindrical body is supplied to the live fish hold. This invention has the structure described above, and since the seawater is not injected but only sprinkled, the watering pipes will not be clogged, and even if the distribution of falling seawater is uneven due to watering, the seawater dispersion holder can be used. D allows the water particles to permeate through the air, making it possible to lengthen the time that water particles are in contact with the air compared to what the applicant has already proposed. Abundant seawater can be supplied, and even in areas with high seawater temperatures, the seawater temperature supplied to the live fish hold is lower enough to maintain the survival temperature of sardines, for example, and maintains a higher survival rate of fish in the live fish hold. Because of this, you can stay at the fishing grounds for a longer period of time and increase your catch. A cylindrical body A with a protruding receiving part b, a hopper body B having a flange part c on the upper edge that can be engaged with the hopper receiving part b, and a hopper body B that is rotated by a motor e in the center of the upper opening d and extends downward. A fan f for supplying air is attached, a seawater sprinkler pipe g is installed vertically around the periphery, and the lower opening edge h is connected to the cylindrical body A.
a lid part C capable of engaging with the upper edge 1; a seawater dispersion holder D placed on the flange part c of the hopper body B and housed in the cylindrical body A; Therefore, when installing it in a relatively narrow space such as a fishing boat, dismantling it for repair, or storing it in a narrow place, it can be disassembled into the cylindrical body A1, the hopper body B1, the lid part C1, and the seawater dispersion holder D. It is convenient because it can be carried separately, and it is easy to assemble.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional live fish holder, Fig. 2 is an explanatory diagram of a seawater supply device for a live fish holder that the applicant previously proposed, and Fig. 3A is an explanatory diagram of a cooling seawater supply device for a live fish holder according to the present invention. FIG. 3 (b) is an enlarged vertical cross-sectional view of a part of the seawater dispersion holding body, and FIG. 4 is a cross-sectional plan view taken along line 1 and 2 in FIG. 3 a. , A is the cylindrical body, B is the hopper body, C is the lid, D is the seawater dispersion holder, a is the exhaust port, b is the hopper receiver, c is the flange, d is the opening, and e is the hydraulic motor 7. -tar f is a fan, g is a seawater injection pipe, Jl, j2 are perforated plates,
k is a core material, I is a bag, m is absorbent cotton, n is a cloth piece, p is a unit zigzag piece, and q is a seawater drop hole.

Claims (1)

[Claims] 1. A cylindrical body A having an exhaust port a on the lower peripheral wall and a hopper receiving portion b protruding inward at the upper part of the exhaust port a.
, a hopper body B having a flange part c on the upper edge that can be engaged with the hopper receiving part b, and a fan f rotated by a motor e to supply air downward is attached to the center of the upper opening part d, A seawater sprinkler pipe g is vertically installed, and a lower opening edge h is placed on a lid part C that can be engaged with an upper edge i of the cylindrical body A and the flange part c of the hopper body B, Seawater dispersion holder D housed in the cylindrical body A
Thus, the seawater dispersion holding body D is made by placing both sides of a core material K, which is a belt-shaped plate bent in a zigzag shape between two upper and lower perforated plates j_1 and j_2, in a rectangular exposed bag 1 with absorbent cotton. m
A large number of unit zigzag pieces p covered with cloth pieces n filled with are vertically arranged in parallel so that the crests of each zigzag piece p face the ridges and the troughs face the troughs, A system for supplying cooling seawater to a live fish tank, characterized in that a seawater drop hole q is formed between each unit zigzag piece p, p.