JPS603729Y2 - Equipment for removing leftover feed, fish excrement, etc. in fish tanks - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for removing leftover bait, fish gear, etc. in a fish culture tank.

Many of the fish tanks currently in use are circular in shape, and the reason for this is that the water for aquaculture flows from the tank's peripheral wall along the surrounding wall, while a drain is provided in the center of the tank to drain the water. This is said to be because the water in the tank can be moved in a circular motion and the fish can swim against this flow, making it possible to increase the density of fish storage and raise the breeding effect compared to other fish farming tanks.

However, according to the above-mentioned circular fish tank, the tapered bottom wall is formed so that the remaining bait, fish gear, etc. sink to the center of the tank, that is, toward the drain port, due to the circular motion, or circulation, of the aquaculture water. However, the higher the density of fish housing, the greater the amount of leftover feed and fishing equipment, and as these decompose and ferment, they generate gases that are harmful to farmed fish. Must be removed as soon as possible.

Therefore, a device like the one shown in Fig. 1 has been conventionally used as a device for removing the above-mentioned leftover bait, fish gear, etc. in a fish culture tank.
A wire mesh e or the like is attached to the drainage port d formed by hanging an outflow pipe C in the center of the bottom wall of the fish culture tank a to prevent the reared fish from escaping and to prevent any remaining fish from remaining near the wire mesh e. It is designed to collect bait, etc.

However, according to the above-mentioned device, the wire mesh e only covers the drain d, and its area is small, so it is easily clogged with leftover bait, fishing gear, etc., and therefore, it must be cleaned frequently.
Not only must they be removed, but the cleaning and removal work must be carried out underwater, and for this reason, if the stocking density of reared fish is high, not only will this have a negative impact on the rearing of the reared fish, such as causing damage to the reared fish. The aquaculture water is disturbed because brushes and other objects are placed in the tank, and the turbulence breaks up small pieces of leftover bait, fishing gear, etc., and eventually they get mixed into the water, causing them to be completely destroyed. It is extremely difficult to remove the particles, and furthermore, the removal work requires a great deal of labor and time.

Therefore, as a result of studies in view of the above-mentioned drawbacks of the conventional technology, the present invention is designed to removably cover the drainage port provided at the bottom of the fish tank with a member appropriately composed of a cylindrical net and a bottom net. This not only prevents clogging caused by leftover bait, fishing gear, etc., but also eliminates the need for underwater work that can have a negative impact on the fish, making it simple and completely removing leftover bait, fishing gear, etc. The purpose is to provide a removal device that can remove

The drawings showing the embodiments of the present invention will be described in detail below.

First, in FIGS. 2 and 3 showing the first embodiment of the present invention, a drain pipe 3 is installed vertically at the center of a tapered bottom wall 2 of a fish culture tank 1, and its drain port is A cylindrical net 5 is formed directly above the cylindrical net 5 which is disposed in a long upright position in the fish culture tank 1, and a bottom net 6 is perpendicular to the lower end of the cylindrical net 5 and extends out in the form of a flange. The cylindrical net 5 has an external length that can be held upright in the fish tank 1, and both sets 5 and 6 are integrated,
This covers the discharge port 4,
7 indicates leftover bait, fishing gear, etc.

Here, in the illustrated example, the cylindrical mesh 5 and the bottom mesh 6 are formed of a wire mesh, a perforated plate, etc., and the cylindrical mesh 5 is considerably larger than the diameter of the drain port 4, and has a circular cross section or an arbitrary shape. On the other hand, the bottom net 6 is also formed in a circular or polygonal shape, and a handle 8 is provided at the upper end of the cylindrical net 5, so that it can be attached to and removed from the drain port 4 by holding the handle 8. It is possible to do so.

Although not essential, the cylindrical net 5 is provided with a ceiling net 9 at its upper end and a bottom lid 10 at its lower end.

In this way, in the state of use shown in Figure 2, when trying to set up from the upper end or the state shown in Figure 2, the breeding fish that have entered the interior from the upper end or the lower end will be removed together with the breeding water when draining. No more escaping to the outside.

Further, in the illustrated example, the bottom net 6 is formed horizontally, and an upright peripheral edge is provided on its outer periphery, and this is fitted into the recess 12 provided in the bottom wall 2 of the fish culture tank 1. ) is formed with low dimensions.

When formed in this manner, the bottom net 6 is fitted into the recess 12 and the cylindrical net 5 is held upright in the fish culture tank 1. It is possible to prevent the leftover bait, fishing gear, etc. 7 accumulated in the tank from falling, and the removal thereof can be carried out more efficiently.

Next, in FIG. 4 showing the second embodiment of the present invention,
By forming the bottom net 6 with a taper that slopes upward outward from the lower end of the cylindrical net 5, it can be adapted to the bottom wall 2 of the fish culture tank 1, and the rest is the same as in the first embodiment. It is composed of

According to this embodiment, the bottom net 6 can be laid on the bottom wall 2 of the fish tank 1 to stably hold it upright, and can also be used when removing leftover bait, fishing gear, etc. ,
Since they are on the bottom net 6 and accumulated in the central cylindrical net 5, the S can be completely taken out without falling into the water during the lifting operation.

Next, referring to FIGS. 5 and 6 showing a third embodiment of the present invention, the cylindrical mesh 5 has an opening 14 at the lower end so that it can be attached to the overflow pipe 13 and is more suitable than the overflow pipe 13. The other dimensions are the same as those of the first embodiment described above, except that the dimensions are longer.

According to the third embodiment, the overflow pipe 13 can be erected from the bottom wall 2 of the fish tank 1 and attached to the fish tank 1.

In addition, in any of the embodiments, the tubular net 5 is provided long enough to be slightly exposed above the water surface 15 of the brass water in the fish tank 1, so that the remaining bait, fish gear, etc. 7 can be removed during attachment and detachment. This is especially convenient in winter because it can be done without putting your hands into the water when resetting after removal.

In Fig. 5, reference numeral 16 denotes a supply pipe arranged on the peripheral wall 1a of the fish tank 1 so that the water for cultivation flows in along the peripheral wall 1a, and the remaining food is removed by giving circulation to the water in the tank. , the fish gear, etc. 7 is allowed to sink toward the center of the tank, that is, toward the drain port 4.

Further, the fish culture tank 1 to which the device of the present invention is applied may be either circular or square, but it is more desirable that it be circular.

As explained above, according to the removing device according to the present invention, the cylindrical net 5 and the bottom net 6 which extends to the outer periphery of the lower end of the cylindrical net 5 and can accumulate leftover bait, fishing gear, etc. Since it is formed into one piece and is held upright so that it can be pulled up freely onto the bottom wall 2 of the same species 1 so as to cover the drain 4 of the fish culture tank 1, the aquaculture water in the tank can pass through the mesh. Since the cylindrical net 5 and the bottom net 6 act as a filter, and their area is much larger than that of the conventional example, the aquaculture water may become clogged and drained. The period until it disappears can be dramatically extended, the number of regular cleanings can be significantly reduced compared to conventional methods, and the cylindrical net 5 can be used to improve the standing posture. keep)
When pulled up, the remaining bait, fishing gear, etc. 7 accumulated on the bottom net 6 will be removed.
can be almost completely removed from the tank without dropping it into the water.

Therefore, leftover feed, fishing gear, etc. 7 may get mixed in and pollute the aquaculture water.
In addition, since there is no need to disturb the inside of the tank with brushes, etc., the inside of the tank can be cleaned easily and in a short time without affecting the fish in the tank, and since it does not involve any work underwater, The labor of the worker can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional side view showing a conventional example of a device for removing leftover bait, fish gear, etc. in a fish culture tank, and Figs. 2 and 3 show the first embodiment of the removal device according to the present invention, respectively, in use. FIG. 3 is a perspective view showing its main parts; FIG. 4 is a partially vertical side view showing the second embodiment of the device of the present invention in a state of use; FIGS. 5 and 6. These are a plan view and a longitudinal sectional side view, respectively, showing a third embodiment of the device of the present invention in a used state. 1...Fish tank, 2...Bottom wall, 4...
... Drain port, 5 ... Cylindrical mesh, 6 ...
Bottom net, 7... Remaining bait, fishing gear, etc., 9...
Ceiling net, 10...Bottom net lower lid part, 11...
...Rising periphery, 12...Concave portion, 13...
- Overflow pipe, 14... Opening at the lower end of the cylindrical mesh.

Claims (6)

[Scope of utility model registration request] (1) A cylindrical net and a bottom net extending from the lower end of the cylindrical net to at least the outer periphery and capable of accumulating leftover bait, fish gear, etc. are integrally formed, and this is connected to the drainage port of the fish tank. A device for removing leftover bait, fish gear, etc. in a fish culture tank, which is held upright on a bottom wall of the same type so as to be covered so as to be able to be pulled up freely. (2) Remaining bait, fishing gear, etc. in the fish farming tank described in Claim 1 of the Utility Model Registration Claim, in which the cylindrical net is formed by extending a ceiling net at the upper end and a bottom net bottom cover at the lower end. removal device. (3) A device for removing leftover bait, fish gear, etc. in a fish culture tank according to claim 1, wherein a cylindrical net is formed with an opening at its lower end. (4) The device for removing leftover bait, fish gear, etc. in a fish culture tank according to claim 1, wherein the cylindrical net is longer than the overflow pipe opening the drain port. (5) The device for removing leftover bait, fish gear, etc. in a fish farming tank according to claim 1, wherein the bottom net is formed in a tapered shape that slopes upward from the lower end of the cylindrical net toward the outer periphery. . (6) The bottom net is perpendicular to the cylindrical net, and is provided with an upright periphery, and a recess is formed in the bottom wall of the fish tank where the drainage port is opened, and the upright periphery is fitted into the recess. A device for removing leftover bait, fish gear, etc. in a fish culture tank as set forth in claim 1 of the Utility Model Registration Claim.