JP2772902B2 - Shirasu sorting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing dried shirasu, and in particular, boiled shirasu is floated once from a belt conveyor, and air is sprayed from a nozzle there to sort the dried shirasu. The present invention relates to a sorting device for sorting and removing small shrimps and small crabs from fish.

[0002]

2. Description of the Related Art In general, a so-called "shirasu-boshi" manufacturing method, in which small fish caught in the sea is boiled and dried on the sun, is still used today. However, since this method is simple, it is mixed in the raw material "whitebait".
"Shrimp and small crabs, or needle-shaped plankton, etc." may be mixed into products to reduce market reputation. Therefore, conventionally, such contaminants are separated and removed by a wind selection method. That is, in the conventional wind selection method, small fishes taken out of the kettle and dried are dropped from above, and selected by sending air from nozzles provided on the sides, or sending air to the conveyor to reduce the size. The small light shrimp and small crab are blown off and removed.

[0003] On the other hand, with the diversification of tastes, the degree of drying has been favored from the traditionally completely dried products with an emphasis on storability to the semi-dried products with an emphasis on taste. Those that are only dried to the extent that they are not wet are becoming popular, and the ratio is increasing due to improvements in storage methods and transport techniques.

[0004]

In this case, too,
As in the past, small shrimps and small crabs must be removed, but those that have just been removed from the kettle and have a low degree of drying contain a lot of water and are heavy, so they are easy to clump and difficult to disintegrate. Therefore, the separation by the wind selection method is extremely difficult, and not only the efficiency of the separation is reduced, but also it is difficult to completely remove small shrimps and small crabs.

[0005]

The object of the present invention is to select selected fishes.
The conveyor belt to be conveyed has its start end at the bottom and end at the top.
And the starting shaft and the electric shaker at the end
It is tilted and supported, and it is located on the starting end side of the electric shaker.
A positive electrode on the upper side and a negative electrode on the lower side with the conveyor belt in between, and at least one end of the positive electrode is
This problem has been solved by providing a supported electrostatic device and providing a selection nozzle between the conveyor belt and the positive electrode of the electrostatic device that blows air from the terminal end to the start end . In addition, all the insulators supporting the electrodes of the electrostatic device are provided.
Preferably, other Ru <br/> be placed in the air flow part is sent from selected nozzles.

[0006]

[Function] The selected fish raised from the kettle is placed on the conveyor belt of the belt conveyor and vibrated up and down by the vibrator. When the fish is transported below the positive electrode of the electrostatic device, the relatively light weight of the selected fish is selected. The shrimp and small crabs float up from the conveyor due to the up and down movement of the conveyor and the attraction of static electricity, and a part of the crab is absorbed by the positive electrode. The remaining portion is blown off by the airflow blown from the side sorting nozzle and is removed from the whitebait. Shirasu, which is heavier than small shrimp and crab, remains on the belt or stands up on the belt, but is conveyed as it is. In addition, small shrimp, small crab, or swarf of debris adsorbed on the positive electrode due to the action of static electricity, since the action of the suction force is weakened as the amount increases, it falls downward by the vibration applied by the vibrator, On the way, it is eliminated by the air flow ejected from the sorting nozzle.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIG. 1, reference numeral 10 denotes a wind-screening device for drying whitebait. The wind sorting device 10 includes a sorting trolley 20 supported by caster wheels, and a belt conveyor 30 supported by the sorting trolley 20. As shown in FIG. 2, the sorting trolley 20 is provided with side plates 22 and 22 on both sides of a bottom plate 21, and supports an upper plate 23 and a lower plate 24 to form an air passage D. The belt conveyor 30 is attached so as to penetrate the air passage D and slightly incline. Reference numeral 12 denotes a supply conveyor for supplying the selected fish F to the belt conveyor 30. The supply conveyor 12 is placed directly from a boiler (not shown) or dried and dried for about half a day.

The belt conveyor 30 is formed by winding a conveyor belt 34 between a driving roller 32 supported by a frame 31 and a driven roller 33. And, it is tiltably supported by the support shaft 35 and the vibrator 36 provided at a distance of 選 from the sorting carriage 20. The drive roller 32 is connected to an electric motor 37 via a belt 38, and rotates at a constant speed. The conveyor belt 34 is made of a polyester net or a stainless steel plate having a large number of small holes. The vibrator 36 vibrates the frame 31 in the vertical direction. Therefore, the belt conveyor 30 is provided to rotate up and down in a short cycle around the support shaft 35 to float the selected fish F from above the conveyor belt 34.

As shown in FIG. 1, the air passage D has a substantially triangular shape whose cross-sectional area increases toward the upstream side of the belt conveyor 30, ie, toward the lower side, as shown in FIG. A selection nozzle 16 for ejecting air downward is opened. The selection nozzle 16 is connected to a blower (not shown), and an air duct connected to the blower is provided with an electric heater and other means for preheating the air flowing through the air duct. Therefore, it is configured such that dry air is blown from the sorting nozzle 16 at high speed. Since the compressed air blown out from the sorting nozzle 16 is expanded in the air passage D ahead in the blowing direction, the compressed air expands and the speed is rapidly reduced.

On the belt conveyor 30 below the sorting nozzle 16, a flip-up nozzle 18 and an electrostatic device 40 are provided on the lower surface of the conveyor belt 34. These are provided together with the vibrator 36 to float the selected fish F from the conveyor belt 34. That is, the wind pressure source of the flip-up nozzle 18 also has a drying means similarly to the selection nozzle 16, and the selected fish F on the conveyor belt 34 is blown upward by the compressed air blown out therefrom.

The electrostatic device 40 is obtained by diverting the electrodes of an electric dust collector. Specifically, the electrostatic device 40 is made of a stainless steel wire having a thickness of 5 mm.
A zero positive electrode 41 and a negative electrode 42 having the same configuration are provided, and a high voltage of about 50,000 volts is applied between them. As a result, the selected fish F on the conveyor belt 34
To the positive electrode 41, the vibration of the belt conveyor 30 by the vibrator 36, and the
In cooperation with the operation of No. 8, it is lifted from the conveyor belt 34. 43 is a high voltage power supply for the electrostatic device 40;
It is connected to the wire-shaped positive electrode 41 while being insulated by the two insulators 44, 44. Numeral 45 is a drying nozzle for injecting air toward the insulator 44.

Reference numeral 13 denotes a stopper plate mounted near the start end of the belt conveyor 30. A small fish receiving box 14 is placed below the stopper plate 13, and small shrimp, small crabs, or shirasu which are out of shape are formed. It is removed from the selected fish F and put in. Reference numeral 15 denotes a sieve receiving box for receiving a product slack placed below the end of the belt conveyor 30.

As described above, among the selected fish F conveyed on the conveyor belt 34, since the small fish is light, the vibration of the belt conveyor 30, the wind sent from the flip-up nozzle 18,
The selected fish F jumped up from the surface of the conveyor belt 34 by the static electricity is blown off toward the stopper plate 13 on the downstream side of the conveyor belt 34 by the air blown out from the selection nozzle 16 and dropped into the small fish receiving box 14. . The shirasu, which is a product, rises when attracted by static electricity, but is heavy and is not blown off by the wind, but moves upward together with the conveyor belt 34. The rising of the whitebait improves the efficiency of sorting in order to allow the small fish that had been placed under the whitebait to float.

FIG. 3 is a flow chart showing a process from landing of whitebait to shipping. In other words, whitebait landed from a boat is put into a kettle and boiled. Boiled whitebait is fried in a kettle and classified by market. For example, Kanto Market A
And Kansai Market B. Those destined for the Kanto market A are then sent to the sorting process, and those destined for the Kansai market B are dried in the sun for about half a day and then sent to the sorting process to maintain the predetermined quality, And separated into
The former is packaged and shipped to the food market, and the latter is boxed and shipped to the feed market.

Next, the selected fish F in the above embodiment is selected.
Will be described. First, when the wind selection device 10 starts operating, it is vibrated by the vibrator 36, and the belt conveyor 30 vibrates up and down by a small angle about the support shaft 35 as an axis. This cycle is about 50 or 60 Hertz, which is the same as the frequency of the power supply. Next, the selected fish F fried in the kettle or dried for about half a day is continuously supplied onto the conveyor belt 34 by the supply conveyor 12.

When it enters between the electrodes 41 and 42 of the electrostatic device 40, it is negatively charged by the negative electrode 42 and jumps up from the surface of the conveyor belt 34 in combination with the up and down movement of the conveyor 30. Rise to the extent. Air is blown from the sorting nozzle 16 toward the upstream side (lower side) of the conveyor 30. Therefore, among the selected fish F, relatively light ones may rise far and heavy ones may rise due to static electricity, but are generally conveyed on the conveyor belt 34 as they are. Therefore, the small fish that has been blown away hits the stopper plate 13 and falls downward, and falls into the small fish receiving box 14. The whitebait is conveyed to the whitebait receiving box 15 by the conveyor belt 34.

In the above description, the scope of the present invention is not limited by the type of small fish described as "whitebait", but refers to the whole small fish used as a raw material for so-called "boiled and dried". Things.

[0019]

According to the present invention as the invention is more, on the belt conveyor for transporting an object to be sorted fish F, provided an electrostatic device as a flip-up means for causing one Dan float to be sorted fish F on a conveyor belt since those, because to float those containing much moisture from the conveyors, to be sorted fish F
And the sorting by the wind force can be more accurately performed.

[Brief description of the drawings]

FIG. 1 is a side view of an air selection device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II.

FIG. 3 is a flowchart showing a manufacturing process of a dried shirasu;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wind selection device 13 Stopper plate 14 Small fish receiving box 15 Shirasu receiving box 16 Sorting nozzle 17 Jumping nozzle 20 Sorting trolley 30 Belt conveyor 34 Conveyor belt 35 Support shaft 36 Exciter 40 Electrostatic device 41 Positive electrode 42 Negative electrode 43 High voltage power supply 44 Insulator 45 Drying nozzle D Air passage F Sorted fish

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A23L 1/325 B03C 7/08

Claims (2)

(57) [Claims] 1. A conveyor belt for conveying selected fish,
With the start end of the shaft at the bottom and the end at the top, the spindle on the start end and the end
Of the electric exciter
A positive electrode and a negative electrode are arranged on the upper side and the lower side of the conveyor belt with the conveyor belt interposed therebetween at the start end side of the shaker, and at least one end of the positive electrode
An electrostatic device supported by a conveyor belt is provided, and a termination is provided between the conveyor belt and a positive electrode of the electrostatic device.
A sorting device for dried shirasu with a sorting nozzle that blows air from the end to the starting end . 2. The method according to claim 1, wherein the electrodes of the electrostatic device are connected to each other.
Shirasu Dried sorting device ing arranged in the support to insulator airflow whole or in part is sent from sorting nozzles.