JPS59196022A - Shellfish feeding apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for artificially rearing shellfish such as clams and clams.

When raising shellfish in breeding tanks on land, it is necessary to keep the breeding water clean by removing the excrement produced by the shellfish. One way to remove feces is to use a siphon tube to suck out the feces that have accumulated at the bottom of the tank. However, the cages suspended in the breeding tank must be lifted or moved before being sucked out using a siphon tube. had to be moved along the bottom of the tank, which was a manual process, which had the disadvantage of poor workability. Another method is to install a jet pipe or a jet nozzle on the bottom of the breeding tank on the opposite side from the drainage hole, and use the jet to move the feces toward the drainage hole and discharge it, but with this method, the breeding water is removed. If this is not done, it will not be effective to excrete feces, and replacing the rearing water will increase costs and workload, and the temporary loss of rearing water will cause a shock to the shellfish, which will inhibit growth. . In addition, since the water is jetted in the presence of rearing water, the Fi feces roll up and adhere to the folds of the shellfish, causing problems such as suffocation of the shellfish.

This invention attempts to solve the above-mentioned drawbacks of the conventional breeding apparatus by movably installing the suction tube along the bottom of the breeding tank.

The breeding apparatus of the present invention will be explained below with reference to the drawings.

1 and 2 show an example of the breeding apparatus of the present invention, in which a plurality of breeding tanks 2, 2, . . . are installed on a pedestal 1 at intervals vertically. In each breeding tank 2 there is a breeding tank 3,
3... is installed.

The breeding cage 3 is suspended between the opposite edge 21 of the breeding tank 2 and a support rod 22 supported from above on the front side so that the periphery of the cage is hooked, and the breeding cage 3 and the breeding tank are A gap is formed between the rear tank 2 and the bottom of the tank 2, and between the rearing cap 3 and the front side wall of the rearing tank 2.

A suction pipe 4 is installed in each breeding tank 2. Suction holes 41, 41,
-Or, a suction slit is provided, and the suction hole 41 is directed toward the tank bottom and is movably installed along the tank bottom. In addition, this suction tube 4 is bent along the side wall of the breeding tank 2, and
It is connected to the rearing water suction device 1i5 by a lexiglu tube 42.

Any device that can suck the breeding water through the suction hole 41 of the suction pipe 4 may be used, for example, by using a pump to suck the breeding water, or by narrowing the cross-sectional area of the air flow path, fluid flow path, etc. Something that generates and suctions can be used. The figure shows a system in which breeding water is sucked through a suction bow 1 and a pipe 4 using a submersible pump and a water pump.

Six watering pipes are installed above each rearing tank 2 to supply rearing water. is being done.

In order to raise shellfish using the above-mentioned apparatus, a predetermined number of young shellfish are placed in the breeding car 3, lined up and hung in the breeding tank 2, and then watered with breeding water. To remove the excrement produced by shellfish,
The breeding water suction device 5 may be activated to suction and remove the feces together with the breeding water through the suction hole 41 of the suction tube 4. At this time, sucking bow 1
The tube 4 is moved along the bottom of the rearing tank 2 to remove the feces by suction. You can move the suction tube 4 by holding it in your hand, but it is easier to move the suction tube 4 by installing a device that moves along the rearing tank 2 and attaching the suction tube 4 to this device to move it. can be converted into

Since feces are discharged and removed together with the rearing water, the rearing water in the rearing tank 2 may decrease during discharge and removal, but in this case, increasing the amount of rearing water sprinkled from the watering pipe 6 good.

Alternatively, the suctioned and discharged breeding water may be returned to the breeding tank 2 through a filter.

FIG. 3 is an explanatory diagram showing another example of the present invention, in which a connecting pipe 7 is provided along the bottom of the breeding tank 2 in the longitudinal direction, and a suction pipe 4 is connected to the tip of this connecting pipe 7. This connecting tube 7 is configured to move through the side wall of the rearing tank 2, and by moving the connecting tube 7, the suction tube 4 is moved in the longitudinal direction of the rearing tank 2 along the bottom of the tank. The feces accumulated at the bottom of the tank can be removed together with the breeding water.

In this example, the breeding tank 2 is used to move the suction tube 4.
It is sufficient that there is a gap between the
The periphery of the breeding cage 3 can be supported and suspended on both edges of the breeding tank 2, and the support structure of the breeding cage 3 to the breeding tank 2 can be simplified.

In addition, in this invention, there may be six suction tubes 4 in one layer, but two suction tubes may be arranged in parallel with an interval, or a sliding rod or tube may be provided parallel to the suction tubes 4. When the suction tube 4 is moved along the bottom of the rearing tank 2, the posture of the suction tube 4 can be kept constant, making it easy to move.

Furthermore, if a brush is attached along and near the suction tube 4, and when the suction tube 4 is moved, the brush can be used to clean the feces attached to the bottom of the tank while the suction tube 4 is suctioning.
Feces can be removed more cleanly.

Further, the suction pipe 4 may be installed in each breeding tank 2, but the suction pipe 4 can also be used as a common pipe for each tank.

The shellfish rearing device of the present invention has the above-mentioned configuration, and the suction tube is movable along the bottom of the tank, so that the suction tube can be moved along the bottom of the tank to remove feces that have accumulated on the bottom of the tank. By moving along the cage, rC can be discharged and removed together with the rearing water, and there is no need to lift or move the rearing cage, making it easy to discharge and remove feces.

In addition, feces can be removed in the presence of rearing water, and feces are not rolled up, so the growth of the shellfish is not inhibited.

[Brief explanation of drawings]

Fig. gF11 is a front view schematically showing an example of the rearing device of the present invention, Fig. 2 is a side view showing a cross-sectional explanatory view of a part of Fig. 1, and Fig. 3 is an explanatory view showing another example of the present invention. It is. l: Frame, 2: Breeding tank, 3: Breeding cage, 4: Suction tube, 4
1: Ii drawing hole or slit, 42: 7 rexizur tube, 5: breeding water suction device, 6: watering pipe. Patent Applicant Sekisui Chemical Co., Ltd. Representative Moto Toshisai Fujinuma 1 Satoshi Takuguchi 3 Figure

Claims (1)

[Claims] L A breeding cage is installed in a breeding tank with a gap between it and the bottom of the tank, and a suction pipe with a suction hole or a suction slit oriented in the axial direction is used as a breeding water suction device. A shellfish breeding device characterized by being connected to a shellfish breeding device.