JP3561315B2 - Shirasu air drying system - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an air separation device for drying shirasu, and in particular, conveys boiled shirasu on a conveyor, or drops the shirasu from the conveyor, and blows the shirasu on the conveyor to apply different winds and shapes. The present invention relates to a wind selection device that eliminates sorting.
[0002]
[Prior art]
In general, the method of so-called "white dried", in which small fish caught in the sea are boiled and dried on the sun, is still used today. In this manufacturing method, small shrimp, small crabs, needle-like plankton, etc., which are mixed in the raw material "Shirasu", are removed by a wind screening method to improve the quality of the product.
[0003]
In the conventional wind selection method, small fishes taken out of the kettle and dried are dropped from above, or the small fishes are placed on a conveyor with a mesh conveyor belt, and blown from the nozzle toward the small fishes. In addition, small shrimp and small crab are blown away to select and remove them. Then, as shown in FIG. 6, a blowing nozzle N for blowing air to the shirasu is formed in a parallel slit shape provided along a longitudinal direction on a side surface of a cylindrical blowing tube 51 connected to a blowing source. It was open.
[0004]
[Problems to be solved by the invention]
However, as the distance from the end of the blowing nozzle connected to the blowing source decreases, the volume and speed of the air blown out from the slit shape decrease, and contaminants such as small shrimp and small crab having a small specific gravity cannot be blown away. In particular, when the thickness of the layer of shirasu placed on the conveyor belt is not uniform, the tendency is strong and there is a problem that the accuracy of the sorting is reduced.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention arranges a blower cylinder so as to cross a passage of a shirasu, and connects an end of the blower cylinder to a blower source and provides an elongated slit-shaped injection port extending in a longitudinal direction, the equator means for setting the ventilation volume to the injection port is provided, it is obtained by setting locally the longitudinal flow of the jetting nozzle. Specifically, both ends of the blower cylinder are connected to a blower source, respectively, and a blower nozzle is protruded from a side wall of the blower cylinder, and an elongated slit-like nozzle extending in a longitudinal direction is provided at a tip end thereof. A plurality of partition plates are arranged along the longitudinal direction of the blower cylinder at the back of the blower, and a blower passage formed between the inside of the blower cylinder and the injection port is divided into a plurality. Further, while connecting both ends of the blower cylinder to the air supply source, the shape of the elongated slit-shaped injection port may be formed such that the width of the central portion in the longitudinal direction is smaller than the width of both ends, Further, one end of the blower tube is connected to a blower source and the other end is closed, and the shape of the elongated slit-shaped nozzle is formed so that the width increases from one end side to the other end side communicating with the blower source. You may. In the case where the width of the slit-shaped injection port changes, the width of the narrow portion and the width of the wide portion are formed in a ratio of about 1: 2.
[0006]
[Action]
Blowing barrel including the side of the Shirasu falling from the conveyor or conveyor for conveying the Shirasu, it is disposed across the passage of the Shirasu. Air is blown into the blower cylinder from a blower, and the blown air blows out from a slit-shaped nozzle provided in the blower cylinder over the entire width of the passage. The amount of air blown out from the nozzle is preset for each position in the longitudinal direction by the equalizing means, and the air is blown with substantially the same strength over the entire length of the slit-shaped nozzle.
[0007]
【Example】
Hereinafter, the present invention will be described with reference to the illustrated embodiments. In FIG. 1, reference numeral 10 denotes an air selection device for drying a shirasu. The wind sorting device 10 includes a sorting trolley 20 supported by caster wheels 11 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, 22 on both sides of a bottom plate 21, and an air passage D is formed by supporting the upper plate 23 and the lower plate 24. Further, the belt conveyor 30 is attached so as to penetrate the air passage D and to be slightly inclined. Reference numeral 12 denotes a supply conveyor for supplying the shirasu F to the wind separation device 10, and a conveyor immediately after being taken out from a boiler (not shown) or a sun-dried one which has been dried for about half a day is conveyed on the belt conveyor 30. Drop it up.
[0008]
The belt conveyor 30 is configured such that a driving roller 32 and a driven roller 33 are supported on one end and the other end in the longitudinal direction of a frame 31 having an upward U-shape, and a conveyor belt 34 is wound therebetween. Further, the belt conveyor 30 is supported so as to be tilted up and down and vibrated by a support shaft 35 and a vibrator 36 provided at a slight distance from the sorting truck 20. Accordingly, the belt conveyor 30 is rotated up and down in a short cycle around the support shaft 35 to lift the shirasu F from above the conveyor belt 34. The drive roller 32 is connected to an electric motor 37 via a belt 38, and rotates at a constant speed. Further, the conveyor belt 34 is made of a polyester net or a stainless steel plate having a large number of small holes, and these are selected and switched according to the size of the shirasu F.
[0009]
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, that is, toward the lower side. A sorting nozzle 16 for separating and removing small fishes from the shirasu F is provided, and a nozzle 17 for flipping upward is provided on the lower surface of the conveyor belt 34. The sorting nozzle 16 and the flip-up nozzle 17 are connected to a blower serving as a blowing source via an air duct (not shown), and the air duct has an electric heater or other means for heating and drying the air. Is provided.
[0010]
Thus, the air blown out from the flip-up nozzle 17 acts on the lower surface of the shirasu F through the conveyor belt 34, and the shirasu F is flipped up from the surface of the conveyor belt 34 by using the belt conveyor 30 rolling from rising to lowering. Let Then, the flipped-up shirasu F is blown off toward the downstream side of the conveyor belt 34 by the air blown out from the sorting nozzle 16, and falls again on the conveyor belt 34. The compressed air blown out from the selection nozzle 16 is expanded in the air passage D at the front in the blowout direction, and expands with the air, and the speed is rapidly reduced so that the shirasu F does not fly too far. The weight of the shirasu passing through the flip-up nozzle 17 is set by increasing or decreasing the amount of air blown from the selection nozzle 16 and the power input to the vibrator 36.
[0011]
The transport nozzles 18 and 19 open obliquely upward from the lower surface of the conveyor belt 34. Accordingly, air is blown from below toward the shirasu F that has fallen onto the conveyor belt 34 from the supply conveyor 12, and among the shirasu F blown off by the action of the sorting nozzle 16, those that have been blown far away, that is, small fish Further, it is sequentially blown off toward the stopper plate 13 and dropped into the small fish receiving box 14.
[0012]
Reference numeral 40 denotes an electrostatic device. The electrostatic device 40 is obtained by diverting the electrodes of an electric dust collector. Specifically, the electrostatic device 40 has a positive electrode 41 and a negative electrode 42 each composed of ten stainless steel wires, and these are about 5 mm across a conveyor belt. It is configured to be able to apply a high voltage of 10,000 volts. Thereby, the shirasu F on the conveyor belt 34 is negatively charged and sucked by the positive electrode 41, thereby cooperating with the vibration of the belt conveyor 30 by the vibrator 36 and the action of the flip-up nozzle 17, and Float from the belt 34. Reference numeral 43 denotes a high-voltage power supply for the electrostatic device 40, which is connected to the wire-shaped positive electrode 41 in a state insulated by two insulators 44, 44. Reference numeral 45 denotes a drying nozzle for blowing air toward the insulator 44 to keep the insulator in a dry state.
[0013]
A small fish receiving box 14 is placed below the stopper plate 13, and small shrimp, small crabs, plankton, or shirasu with a deformed shape are removed from the shirasu F and thrown. Reference numeral 15 denotes a shirasu receiving box for receiving shirasu as a product placed below the end of the belt conveyor 30.
[0014]
In this way, the shirasu F jumped up from the surface of the conveyor belt 34 is blown off toward the downstream side of the conveyor belt 34 by the air blown out from the sorting nozzles 16, and is thinly and widely dispersed in the width direction of the belt 34, and at a distance. The fish that has been blown up, that is, the lightweight small fish is blown off toward the stopper plate 13 and dropped into the small fish receiving box 14.
[0015]
Here, a description will be given of the blowing nozzle 50 that sends a screening wind toward the shirasu F moving on a predetermined passage, such as the sorting nozzle 16, the flip-up nozzle 17, and the transport nozzles 18 and 19. These blower nozzles 50 are attached to a blower cylinder 51 arranged across the passage of the above-mentioned Shirasu F.
[0016]
3, the blower cylinder 51 has a substantially cylindrical shape, and an end thereof is connected to a hose 52 connected to a blower (not shown). The blower nozzle 50 is formed by upper and lower plate members 50a extending tangentially from the side surface of the blower tube 51 and side plate members 50b connecting both ends thereof, and communicates with the inside of the blower tube 51 through the ventilation holes 51a. An elongated slit-shaped injection port 53 extending in the axial direction is provided at the outer end. Further, an equalizing means 54 is provided between the injection port 53 and the blower tube 51 so that the wind force blown from the blower nozzle 50 uniformly acts on the entire width of the passage of the shirasu F. Here, the equalizing means 54 sets the shape of the injection port 53 such that the width w at the center in the longitudinal direction is smaller than the width W at both ends, and the ratio is set to about 1: 2. . Thus, the amount of air blown out from the injection port 53 is substantially equal in each part of the blow nozzle 50 in the longitudinal direction.
[0017]
Furthermore, in FIG. 4, the hose 52 is connected to only one side of the blower cylinder 51, and the other side is closed. Similarly, a blowing nozzle 50 is protruded from the side wall of the blowing tube 51, and the nozzle 53 having an opening at the tip has a width w on the side to which the hose 52 is connected is smaller than the width W on the other side. The period is changed at a predetermined rate. The ratio between the width w and the width W is set to a ratio of about 1: 2 as in the case of FIG. Thus, the amount of air blown out from the injection port 53 is substantially equal in each part of the blow nozzle 50 in the longitudinal direction.
[0018]
Further, in FIG. 5, a hose 52 is connected to one or both sides of the blower cylinder 51, and a blower nozzle 50 is protruded from a side wall of the blower cylinder 51. Is provided. A large number of partition plates 54a, 54a are arranged along the longitudinal direction of the blower tube 51 at the back of the nozzle 53, and the passage leading from the blower tube 51 to the nozzle 53 is divided into a plurality of passages. Thus, the interval between the partition plates 54a, 54a is set so that the center portion is narrow and the end portion is wide, and the amount of air blown out from the injection port 53 is substantially uniform in each portion of the blow nozzle 50 in the longitudinal direction. In addition, as shown by the two-dot chain line in the drawing, the partition plate 54a can be partially bent outward to increase the air blowing width.
[0019]
【The invention's effect】
As described above, according to the present invention, the wind blown out of the injection port 53 for selecting the dried shirasu is blown out substantially uniformly over the entire width of the passage of the shirasu by the equalizing means. Therefore, the wind acting on the shirasu becomes constant, and the accuracy of wind selection is improved. Further, the equalizing means is provided between the blower cylinder and the slit, has a simple structure, and has an effect that it can be manufactured at low cost.
[Brief description of the drawings]
FIG. 1 is a side view of a wind selection device according to an embodiment of the present invention.
FIG. 2 is a sectional view taken along the line II-II.
3A is an enlarged cross-sectional view of a main part in FIG. 1, and is a cross-sectional view taken along the line AA in FIG. 3B. (B) is an arrow B view, and (c) is a CC sectional view.
FIG. 4 is a sectional view corresponding to FIG. 3 showing another embodiment, in which (a) is an enlarged sectional view, (b) is an arrow B view, and (c) is a CC sectional view.
5 is a cross-sectional view corresponding to FIG. 3 showing another embodiment, (a) is an enlarged cross-sectional view, (b) is a BB cross-sectional view, and (c) is a CC cross-sectional view. is there.
FIGS. 6A and 6B are cross-sectional views showing a conventional device, corresponding to FIGS. 3A and 3B, wherein FIG. 6A is an enlarged cross-sectional view and FIG.
[Explanation of symbols]
10 Wind-selecting device 11 Caster wheels 12 Supply conveyor 13 Stopper plate 14 Small fish receiving box 15 Shirasu receiving box 16 Sorting nozzle 17… Bounce nozzles 18, 19… Transport nozzle 20… Sorting trolley 21… Bottom plate 22… Side plate 23… Top plate 24… Lower plate 30 Belt conveyor 31 Frame 32 Drive roller 33 Driven roller 34 Conveyor belt 35 Support shaft 36 Vibration Device 37 ... Electric motor 38 ... Belt 40 ... Electrostatic device 41 ... Positive electrode 42 ... Negative electrode 43 ... High voltage power supply 44 ... Insulator 45 ... · Drying nozzle 50 · · · Blowing nozzle 50a · · · Upper and lower plate members 50b · · · Side plate members 51 · · · - blowing tube 51a · · · vent 52 ... hose 53 ... slit nozzle hole 54 .... equator means 54a · · · partition plate D ... air passage F .... Shirasu W, w ... width

Claims (5)

The blowing tube arranged so as to cross the passage of shirasu, an elongated slit-shaped nozzle hole extending in the longitudinal direction as well as connecting the end of the blowing tube to the blower source provided, to set the air quantity to the injection port equator An air selection device for drying shirasu, comprising means for locally setting the flow rate in the longitudinal direction of the nozzle. 2. The air blower according to claim 1, wherein both ends of the blower tube are connected to a blower source, a blower nozzle is provided on a side wall of the blower tube, and an elongated slit-like nozzle extending in a longitudinal direction is provided at a tip end thereof. A plurality of partition plates are arranged along the longitudinal direction of the blower cylinder at the back of the air blower, and an airflow path formed between the inside of the blower cylinder and the nozzle is divided into a plurality of blowers. In Claim 1, both ends of the blower cylinder are connected to a blower source, respectively, and the shape of the elongated slit-shaped injection port is formed such that the width at the center in the longitudinal direction is smaller than the width at both ends. A wind selection device for drying Shirasu. 2. The air blower according to claim 1, wherein one end of the blower tube is connected to a blower source and the other end is closed, and the shape of the elongated slit-shaped nozzle is increased from one end side communicating with the blower source toward the other end side. An air filter for drying dried shirasu. 5. The wind for drying white shirasu according to any one of claims 1, 3 and 4, wherein the slit-shaped orifice is formed such that the width of the narrow portion and the width of the wide portion are approximately 1: 2. Selection device.

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