JPH0210941Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a fish feeding machine.

In recent years, the fishing industry has been undergoing a transformation toward producing fish rather than catching them. Therefore, various aquaculture methods are being implemented. For example, cage aquaculture is one of them.
For example, in the case of yellowtail fish farming, net cage facilities are well known. In this method, the fish cage is set up floating on the sea surface, so it consists of the fish cage net, a raft, and the tension to secure them, and it is installed in a place where there is good exchange of seawater. However, in such cases, when the same place is used as a fish farm for many years,
The seabed is polluted to some degree by leftover feed, feces, and other so-called excrement from fish farms, deteriorating the environment, so it is important to take this into consideration when choosing a location.

In addition, in the case of yellowtail, the number of feedings is once or twice a day, and the feeding is done carefully and over time to ensure that the food is distributed to all the fish and that there is no leftover food. This is considered essential.

[Prior art and its problems]

With the above-mentioned fish farming technology as a background, various fish farming and feeding machines have been proposed. One of them is a cylindrical bait container, in which a bait casting hole, which is a chute, is bored at the bottom, and an impeller that rotates near the bottom is provided, and each time the impeller passes through the bait casting hole, bait is passed through the impeller. There is a known device in which the bait is scraped with a bait, dropped through a bait hole, and then spread over a wide area on a high-speed rotating diffusion plate installed under the bait container (for example,
(Japanese Unexamined Patent Publication No. 55-85338, Japanese Utility Model Application No. 56-1467).

However, in the case of such a proposal, since the impeller rotating near the bottom of the bait container scrapes the bait from the bottom of the bait container, the bait is scraped while resisting its own weight. There was a risk that the shape would collapse, and especially in the case of compound feeds whose shape was retained with a binder, they would be broken into pieces. If the bait is fragmented, fish will not eat it, which not only increases the cost of bait, which is said to account for more than 80% of the cost of fish farming.
The fragmented bait is scattered, which deteriorates the fish farming environment as described above, and in particular induces red tide, resulting in mass mortality of farmed fish.

[Means for solving problems]

Therefore, the present invention was devised in an attempt to eliminate such inconveniences in conventional fish feeding machines.By scraping off the upper layer of the bait stored in the bait container sequentially with a scraping piece, Not only live baits (sardines, locusts, horse mackerel), but also dry compound feeds and wet compound feeds, finely chopped,
The idea is to feed the fish in a labor-saving manner without breaking down.

Hereinafter, the structure of the present invention will be explained in detail with reference to embodiments shown in the accompanying drawings. FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1.

1 is a cylindrical FRP bait container with a diameter of 50 cm.
It has a height of 60 cm, and 2 is a frame installed on the diameter of the bait container 1, and a lifting screw shaft 3, which is provided at the center of the frame 2, that is, at the center of the bait container 1, is rotated through a metal 4. It is erected and can move freely. A nut 5 is screwed onto the elevating screw shaft 3, and an elevating bottom plate 6 is fixed to the outer periphery of the nut 5. A notch 7 is provided in a part of the elevating bottom plate 6 in the radial direction, and a flat cylindrical FRP fixed to the notch 7 is provided in the notch 7.
It is loosely fitted so that a chute 8 made of aluminum can be penetrated therethrough. The chute 8 is fixed to the frame 2 and to a reinforcing ring 9 fitted into the lower opening of the bait container 1.

The nut 5 is provided with a notch 27 as shown in FIG. 3 in order to prevent bait from being screwed in between the nut 5 and the elevating screw chute 3.

The lifting screw shaft 3 protrudes from the upper opening of the bait container 1, and a gap 10 in which no screw is carved is provided in the upper part, and the metal 1 is placed in the gap 10.
1 and a sleeve 12 around the outer periphery of the metal 11.
A metal case 14 is rotatably fitted onto the outer periphery of the sleeve 12 via a thrust metal 13. A discharge sprocket 15 is fixed to the upper end of the sleeve 12, and a base of an impeller 16 is fixed to the lower end thereof. The impeller 16, which is the scraping piece, is gently curved as shown in FIG. 2, and a number of claws 17 are suspended from the lower side of the impeller 16.

Above the ejection sprocket 15, the elevating screw shaft 13 has an elevating sprocket 1 at the upper end thereof.
8 is fixed, and the sprocket 18 is driven by a reduction gear 19 together with the discharge sprocket 15. That is, the rotation of the elevating sprocket 18 causes the elevating screw shaft 3 to rotate, and the rotation of the shaft 3 causes the nut 5 to thread, thereby raising and lowering the elevating bottom plate 6. On the other hand, the discharge sprocket 15
is rotated independently of the lifting screw shaft 3, the sleeve 12 is rotated, and the rotation of the sleeve 12 rotates the impeller 16 at a constant height position directly above the chute 8.

The upper opening of the bait container 1 is covered with and fixed to a semicircular driving unit mounting base plate 20 including a lifting screw shaft 3, and a metal case 14 is fixed to the base plate 20. On the base plate 20, as shown in FIG.
A motor 21 for driving is mounted. A lid 23 covers the upper opening of the bait container 1 and the hopper 22 extending in a tongue shape from the bait container 1, which are not covered by the base plate 20, so as to be openable and closable.

Note that the outer periphery of the bait container 1 is wrapped with a heat insulating material 24 to prevent deterioration of the bait due to external temperature. Further, a rubber seal 25 is provided around the outer periphery of the elevating bottom plate 6 to seal the gap between the elevating bottom plate 6 and the bait container 1, and prevent small pieces in the bait container 1 from falling. Furthermore, 26 is a diffusion plate driven by an appropriate motor, which rotates at high speed.

Since this embodiment is configured as described above,
The bait container 1 is installed on a raft of a fish farm at a distance of about 50 cm above the water surface via a frame 28, and the bait container 1 is
By driving the motor 21, the elevating screw shaft 3 is rotated (3 to 15 rpm) and the sleeve 12 is also rotated, so that the elevating bottom plate 6 is gently raised. That is, it takes 1 to 1.5 hours to go from the bottom to the top. At the same time, the impeller 16 rotates (6 to 3 rpm) to scrape off the upper layer of the contained bait and drop it into the chute 8.
The fallen bait is spread in all directions on the diffusion plate 26 and fed. If a timer is attached to the motor 21,
It is possible to feed for a required period of time, stop, and then automatically perform the next feeding.

In this embodiment, the bait container 1 is of a stationary type installed on a raft, but the bait container 1 can be moved horizontally on a rail by using a motor that drives the diffusion plate 26. It may be moved back and forth. In addition, the scraping piece that is the impeller 16 is not only provided in the lifting screw shaft 3 so as to be rotatable within the bait container, but also when two chute 8 are provided symmetrically and the scraping piece is reciprocated to alternately move these chute. You may scrape it off.

[Effect of the invention] As the bottom plate of the cylindrical bait container rises, only the floating bait is scraped off, so external forces such as the weight of other baits do not act on the bait being scraped off, and the bait is broken into small pieces. , and will not crumble.

Since the scraping piece and the upper opening of the chute are not built into the stored bait, when the bait is gathered by the scraping piece, it does not become lump-shaped, and the driving force is small, resulting in a small overall size. It can be configured as follows.

Since the scraping piece performs the scraping movement in a fixed position, the chute does not need to move up and down, so its lower end does not submerge in the water, making it suitable for surface-feeding fish. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a plan view taken along arrows A to A in FIG. 1, and FIG. 3 is a perspective view of parts. 1... Bait container, 3... Elevating screw shaft, 6... Elevating bottom plate, 8... Chute, 16... Impeller.

Claims (1)

[Scope of utility model registration request] A vertical shaft is provided in the cylindrical bait container, and the bottom plate of the bait container is fixed to the vertical shaft so as to be able to move up and down, and at a fixed position of the upper opening of the bait container, the upper layer of the stored bait is scraped. What is claimed is: 1. A fish feeding machine for fish farming, characterized in that a scraping piece is provided to scrape off the upper layer of bait that has surfaced as the bottom plate rises into a chute.