JPH0440469Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a device for sorting fish into large and small fish.

[Conventional technology]

Devices for sorting fish into large and small sizes have been developed.
As a sorting device with a simple structure, one in which a plurality of elongated rods are arranged in parallel has been developed (Japanese Patent Laid-Open No. 126585/1985). This sorting device drops fish from between the rods and sorts them into large and small fish. The rods are rotated to increase sorting efficiency. however,
Since a rotating rod is used, the fish to be sorted are easily damaged. This is because the fish is rubbed against the surface of the rotating rod. Additionally, a device has been developed that vibrates a plurality of long and thin rods in the axial direction to sort them into large and small rods (Japanese Patent Laid-Open No. 63-68040). However, the sorting device described in this publication also vibrates the rod, so
The disadvantage is that the rod and fish rub against each other and easily get damaged. By transporting fish using a belt conveyor and sorting them into large and small fish, it is possible to reduce damage caused by friction between the fish and the belt conveyor. A sorting device using a belt conveyor is described, for example, in Japanese Patent Application Laid-Open No. 164739/1983. The fish size sorting device described in this publication includes a plurality of horizontal belt conveyors arranged in parallel. A lateral transfer belt conveyor is disposed upwardly apart from and intersecting with this belt conveyor. If the fish being transferred by the belt conveyor is large, the horizontal transfer belt conveyor contacts the fish and transfers it sideways. Small fish do not come into contact with the horizontal transfer belt conveyor and are not transferred sideways.
Sent out on a conveyor belt. Therefore, this sorting device can sort fish into large and small fish by adjusting the interval between the belt conveyor and the horizontal transfer belt conveyor. Furthermore, as a sorting device using belt conveyors, a device in which belt conveyors are connected vertically and in series with a certain gap has also been developed (Japanese Patent Laid-Open No. 57-43636
Publication No.). The fish size sorting device described in this publication has an accelerating roller located above and away from one belt conveyor. This system accelerates large fish and transfers them from one belt conveyor to the next. For this reason, the acceleration roller is arranged above the belt conveyor of all stages. Further, the acceleration roller is rotated at a faster speed than the belt conveyor so as to accelerate the fish so that it jumps over the gap between the belt conveyors connected in series. This sorting device sorts fish under the following conditions. When a large fish is transferred on a conveyor belt, it comes into contact with an accelerating roller and is accelerated in the direction of transfer. The accelerated fish is transferred to the next belt conveyor by jumping over it without falling between the belt conveyors connected in series. When small fish are transferred on the conveyor belt, they do not come into contact with the accelerating rollers. Therefore, this fish is transported on the belt conveyor without being accelerated by the accelerating roller. Fish that are slowly transported by a belt conveyor cannot jump between the belt conveyors connected in series, and fall through the gaps between them. A size sorting device with this structure adjusts the size of fish to be sorted by adjusting the distance between the belt conveyor and the acceleration roller.

[Problem that the idea aims to solve]

However, these conveyor belt fish sorting devices are difficult to sort without damaging the fish. The reason for this is that the surface of the fish is rubbed by transporting the fish in a direction perpendicular to the transport direction using a horizontal transport belt conveyor, or by accelerating and transporting the fish using an accelerating roller. This invention was developed with the aim of resolving this drawback.The important purpose of this invention is to provide a fish size sorting device that can efficiently sort fish into large and small fish while minimizing damage to the fish. .

[Means to solve the problem]

The fish size sorting device of this invention has the following configuration in order to achieve the above-mentioned objective. (a) The fish size sorting device includes a supply means 1 for supplying water and fish together, a pair of belt conveyors 2 for sorting the fish according to size after being supplied with the fish from the supply means 1, and a pair of belt conveyors 2 for sorting the fish according to size. Drive means 3
and a sorting chamber 4 arranged below the belt conveyor 2. (b) A pair of belt conveyors 2 are arranged facing each other so that there is a gap between them. (c) The upper surfaces of the pair of belt conveyors 2 are arranged in a V-shape so that the fish slide under their own weight and fall through the gap between the belt conveyors 2. (d) The pair of belt conveyors 2 are transported in the same direction to transport the fish smoothly. (e) The pair of belt conveyors 2 are arranged with wide intervals in the transport direction so that large and small fish fall at different positions.

[effect]

The fish size sorting device of this invention sorts fish into large and small fish under the following conditions. A feeding means 1 feeds fish together with water between belt conveyors 2. A belt conveyor 2 supplying fish is moved by a drive means 3. The fish fed between belt conveyor 2 is V
It is transported by being sandwiched between two letter-shaped belts. At this time, since the belt conveyor 2 is arranged in a V-shape, the fish slides along the belt conveyor 2. However, if the minimum gap of the belt conveyor 2 is smaller than the width of the fish, the fish will not pass through the gap of the belt conveyor 2 and fall. A V-shaped belt conveyor 2 lines up the fish. This is because, by sliding along the belt conveyor 2, the fish are directed in the longitudinal direction of the belt conveyor 2. As the fish are transferred, they are transferred to belt conveyor 2.
The minimum spacing between is widened. When the minimum interval becomes larger than the width of the fish, the fish passes through the gap in the belt conveyor 2 and falls. The fish size sorting device of this invention, which can sort fish into small and large fish in this state, has the advantage of being able to sort fish with minimal damage. This is because the fish can be sorted without rubbing the surface, unlike conventional sorting devices. In addition, the sorting device of this invention has the advantage that the V-shaped belt conveyor 2 lines up the fish and sorts them into large and small fish, so the sorting accuracy is high and the fish can be sorted accurately. Furthermore, since the sorting device of this invention supplies fish and water together between the belt conveyors 2 arranged in a V-shape, the fish can be sorted by the water flowing between the belt conveyors 2. Achieving features that increase accuracy and reduce damage. This is because the fish come into contact with the belt conveyor 2 through water, which improves the slippage between the fish and the belt conveyor 2, and the water current has the effect of aligning the fish.

【Example】

Hereinafter, embodiments of this invention will be described based on the drawings. However, the embodiment shown below is an example of a fish size sorting device that embodies the technical idea of this invention, and the sorting device of this invention does not change the material, shape, structure, and arrangement of the component parts. It is not specific to the structure below. Various changes can be made to the sorting device of this invention within the scope of the claims for utility model registration. Furthermore, in order to make it easier to understand the scope of claims for utility model registration, this specification includes numbers corresponding to the members shown in the examples in the "column of claims for utility model registration",
Additional notes are added to the members shown in the "Column of Means for Solving Conventional Problems" and the "Column of Functions and Effects."
However, the members shown in the scope of the utility model registration claims are by no means limited to the members of the embodiments. The fish size sorting device shown in FIGS. 1 to 3 includes a supply means 1 for supplying water and fish together, and a pair of belt conveyors 2 for sorting the fish into sizes according to the supply means 1. , a driving means 3 for the belt conveyor 2, and a sorting chamber 4 disposed below the belt conveyor 2. The supply means 1 can be a fish pump that transports fish using water as a transport medium. The supply means 1 can also directly supply fish and water to the belt conveyor 2 using a hose or the like. The supply means 1 preferably comprises a primary storage tank 5, as shown in FIG. The primary storage tank 5 temporarily stores the fish and water sent from the fish pump and supplies it to the belt conveyor 2. In this way, the device including the primary storage tank 5 has the advantage of being able to supply fish and water to the belt conveyor 2 more uniformly. A pair of belt conveyors 2 allow fish to fall between them and sort them into large and small fish. Therefore, as shown in FIGS. 1 and 2, the pair of belt conveyors 2 are disposed facing each other with a gap between them. The belt conveyor 2 includes an endless belt 6 and a roller 7 on which the belt 6 is hung. The belt 6 can be made of a flexible rubber sheet, a synthetic resin sheet, or a combination of narrow plates 14 shown in FIG. 6 that are bendably connected. belt 6
The surface is smooth so that the fish can slide smoothly on it. The endless belt 6 shown in FIG. 4 has lower opposing surfaces that are gently curved, as shown in the cross-sectional view of FIG. The endless belt 6 having this shape has the advantage of increasing the accuracy of fish sorting and reducing damage to the fish. As shown in FIG. 6, if the corners of the lower edge of the endless belt 6 are set at right angles and the fish are passed through and sorted into large and small fish, there is a drawback that the fish are easily damaged. This is because the fish contacts the lower edge of the right-angled endless belt 6 at one point and is locally rubbed with a strong force. As shown in FIG. 5, this drawback can be overcome by curving the lower edge of the endless belt 6. The plates 14 are bendably connected to each other via pins 15. The rotating shaft of the roller 7 on which the belt 6 is hung is supported by a frame 9 via a bearing 8. As shown in FIG. 2, the belt conveyor 2 has a V-shaped belt surface that moves on the upper surface so that the fish slide under its own weight and fall through the gap in the belt conveyor 2. The angle α of the bottom of the V-shaped belt is usually adjusted to a range of 30 to 120 degrees, preferably 45 to 100 degrees. A pair of belt conveyors 2 arranged to face each other are transported in the same direction and at the same speed so as to transport the fish smoothly. For this reason, the rotating shaft of the roller 7 on which the belt is hung is connected to a deceleration motor that is the driving means 3. When the speed reduction motor drives both belt conveyors 2 at the same speed, the fish to be transferred will be transferred to the belts 6 on both sides.
It doesn't get scratched at all. However, it is also possible to transport both belts at approximately equal speeds. In this case, the fish and belt rub against each other, but the extent of the rubbing is small, so the fish is not scratched. Furthermore, as shown in FIG. 1, the pair of belt conveyors 2 are disposed at wide intervals in the transport direction so that the falling position changes depending on the size of the fish. As shown in FIG. 3, below the belt conveyor 2, there is provided a sorting chamber 4 into which the fish that have passed are dropped. The sorting chamber 4 is divided into a plurality of sections by partition walls 10. The partition wall 10 partitions the sorting chamber 4 in the direction of fish transfer. The partition wall 10 is attached to the sorting chamber 4 so that its attachment position can be changed. In the sorting chamber 4 having this structure, the size of the fish to be sorted can be adjusted by changing the fixed position of the partition wall 10. However, when dividing the fish into large and small fish, there is no need to partition the sorting chamber 4 with a partition wall. This is because the fish can be classified into small fish that fall into the sorting room 4 and large fish that do not fall between the belt conveyor 2. The size of the fish to be sorted can also be adjusted by changing the interval between the belt conveyors 2, regardless of the partition wall of the sorting chamber 4. In this case, as shown in Figure 3,
A bearing of a belt conveyor 2 is fixed to a frame 9 via a horizontally moving member 11. The horizontally moving member 11 includes a threaded rod 12 connected to a bearing, and a nut 13 that clamps the threaded rod 12 to the frame 9. The horizontally moving member 11 having this structure can adjust the fixed position of the belt conveyor 2 by loosening the nut 13, and then tighten the nut 13 to fix it at the adjusted position.

[Brief explanation of the drawing]

1 to 3 are a perspective view and a cross-sectional view of a fish size sorting device showing an embodiment of this invention;
6 through 6 are a perspective view and a sectional view showing an example of an endless belt. 1... Supply means, 2... Belt conveyor, 3...
... Drive means, 4 ... Sorting room, 5 ... Primary storage tank, 6 ... Belt, 7 ... Roller, 8 ... Bearing, 9 ... Frame, 10 ... Partition wall, 11 ... Horizontal moving member, 12 ...Threaded rod, 13...Natsuto,
14...Plate material, 15...Pin.

Claims (1)

[Scope of claim for utility model registration] A fish size sorting device having the following configuration. (a) The fish size sorting device includes a supply means 1 for supplying water and fish together, a pair of belt conveyors 2 to which fish are supplied from the supply means 1, a driving means 3 for the belt conveyor 2, and a belt conveyor. 2 and a sorting chamber 4 disposed below the 2. (b) The pair of belt conveyors 2 are arranged to face each other. (c) The pair of belt conveyors 2 are arranged in a V-shape on the upper surface. (d) A pair of belt conveyors 2 are conveying in the same direction. (e) The pair of belt conveyors 2 are disposed with a wide gap in the transport direction.