JPH0787880A - Screener for small fishes such as dried young sardine - Google Patents

Abstract

PURPOSE:To obtain a screener for small fishes such as dried young sardine which can reduce the installation area with reduced damage of small fishes by arranging a carrying conveyer and discharge conveyer of small fishes in a specific state and making an air nozzle opened obliquely upward to a lower face of a belt of the carrying conveyer. CONSTITUTION:A discharge conveyer 30 is set above a carrying conveyer 20 for small fishes so that they cross each other and an air nozzle 24 is opened upward at an angle to the lower face of the conveying belt 23. Small crabs, shrimps, planktons and the things of small specific gravity are received by the discharge conveyer 30 in the downstream of the air nozzle and separated from the small fishes falling on the conveyer 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention separates and separates small crabs, shrimps, plankton and other crustaceans contained therein or damaged shirasu from small fish that have been or are being processed, such as dried shirasu. The present invention relates to a wind-powered sorting device for.

[0002]

2. Description of the Related Art Generally, small fish such as white fish from the sea are boiled, dried in the sun, dried and served before meals, so-called "niboshi" or "shirasu dried" has been manufactured for a long time. Many sun-drying processes are still adopted today. On the other hand, since this product is a manufacturing method that catches and treats innumerable small fish, small shrimp, small crabs, or needle-shaped plankton and other crustaceans are mixed in the raw materials such as white fish and other small fish, and they are used in the market. There were times when the evaluation of the product was reduced.

Therefore, a wind power sorting method is used to remove these contaminants from the product. In other words, the Shirasu fish that has been taken out of the kettle and lightly dried in the sun is lifted up by a conveyor and dropped to blow air from the side to blow away crustaceans with a small specific gravity. However, this method requires a relatively large head in order to be performed efficiently, which damages soft semi-dried small fish and spreads the blown-out crustaceans and shirasu over a wide area, making the device unusable. There was a problem that it became large.

In order to eliminate such a defect, the applicant has
Instead of the drop type sorting method, the conveyor belt of the conveyor is made porous, and air is blown from below to the Shirasu dryer placed on it, or the conveyor belt is vibrated up and down to raise the Shirasu dryer. The technology for blowing away the conveyor belt in the traveling direction or in the opposite direction was previously proposed (Japanese Patent Application No. 5-223996).

[0004]

However, although the proposed device does not damage the dried shirasu unlike the conventional gravity-based wind sorting device, the shirasu fish blown up by the wind force spreads. It sometimes dropped from the conveyor. Further, when the device is put on the market, it is strongly required to be transported by a truck and to be installed in a narrow place, and further downsizing of the device remains an issue.

[0005]

[Means for Solving the Problems] The above-mentioned problems are provided with a conveyer conveys a shirasu fish which is a fish to be selected, and a discharge conveyer provided so as to intersect with the conveyer, and the conveyer conveyer belt is provided. An air blowing nozzle is opened obliquely upward on the lower surface, and the discharge conveyor is arranged in the downstream direction of the air blowing nozzle. Specifically, the transport conveyor and the discharge conveyor are box-shaped support frames. By supporting the upper part and accommodating a blower inside the supporting frame, and connecting the blower and the blower nozzle by a flexible conduit, and more specifically, the upper part of the discharge conveyor. This is solved by providing a collection box having an opening on the bottom surface and the side surface on the side of the blowing nozzle.

[0006]

[Function] When the Shirasu fish lifted from the kettle is placed on the belt of the conveyor and the transportation is started, when the Shirasu fish reaches directly above the air blow nozzle, the air blown from the air blow nozzle causes the Shirasu fish to move in the conveyor transfer direction or It is blown up in the opposite direction. Shirasu fish of a certain size drop due to their large weight onto the conveyor belt near the air blowing nozzle even if they are blown up, and small crabs, small shrimps, or plankton with a small specific gravity are thrown away and placed there. It is received by the belt of the discharged conveyor and is not returned to the transport conveyor again, and is separated from the white fish that has dropped onto the transport conveyor.

[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 is a shirasu fish sorter such as dried shirasu according to the present invention. The sorting device 10 has a conveyor 20 supported by a box-shaped support frame 11 with a gentle inclination. The support frame 11 is an outer plate 12 made of stainless steel on the outer surface of a frame body made by welding and assembly of equilateral angle steel.
It was screwed on and covered with a blower 13
Is provided. Incidentally, 14 is the conveyor 20
And a drive motor for driving a discharge conveyor 30 described later, which is also bolted to the support frame 11.

The transfer conveyor 20 is provided with a pair of left and right rails 21 and 21 supported on the upper end of the support frame 11, and is in the form of two rolls bridged between the left and right rails 21 and 21 located at both ends of the rails. A breathable conveyor belt 23 made of a net, a perforated plate, or the like is wound between the pulleys 22 and 22. Then, at one end thereof, the boiled Shirasu fish F, which is a raw material of dried Shirasu, is received from the end of the other conveyor 15 and is transferred to the other end while the Shirasu fish F is transferred to the other end. It has a function to remove contained small crabs, small shrimps, or plankton. In addition, 28 and 28 are idle pulleys, and the conveyor belt 2
It is installed to bend 3 into L shape.

The conveying conveyor is provided with a blowing nozzle 24 on the back surface of the conveying belt 23 that conveys the Shirasu fish F and having an elongated opening portion that is opened obliquely upward and is arranged parallel to the belt 23. The other end of the nozzle 24 is made of synthetic resin and is connected to the blower 13 via a flexible conduit 17 having a bellows-like appearance. Thus, when the blower 13 is energized and operated, the blower nozzle 2
The air blows from 4 toward the back surface of the conveyor belt 23, and the pressure of the air blows through the conveyor belt 23, and the shirasu fish F is being conveyed.
Which acts on the lower surface of the conveyor belt 23 from above the conveyor belt 23 and a collection box 31 provided to cover the discharge conveyor 30 described later.
It is designed to blow up toward inside.

An upper portion of the transfer conveyor 20 is located in the opening direction of the blower nozzle 24, and the transfer conveyor 20
Across the discharge conveyor 30 and the collection box 3 covering it
1 and are provided. The collection box 31 is made of acrylic resin, and has a bottom surface facing the discharge conveyor 30 and a front surface facing the blowing nozzle 24. Therefore, among the shirasu fish F blown up from the conveyor 20 by the blast nozzle 24 and the foreign matters mixed in the shirasu fish F, those having a large outer shape are blown away and fall onto the discharge conveyor 30 to a predetermined extent. The shirasu fish F having the size and the weight of 6 drops again on the transport conveyor 20 before reaching the discharge conveyor 30. Reference numeral 32 is a guide plate provided at the lower edge of the collection box 31, and the shirasu fish F and contaminants blown into the collection box 31 are either the conveyors 20 or the conveyors 30. It guides you to fall onto the belt.

A receiving box 26 is provided at the end of the transport conveyor 20.
Is provided so that only the selected high-quality white fish F can be dropped and accepted. At this time, the second blow nozzle 2 is also provided at this end so that the white fish F is not caught by the holes or mesh of the conveyor belt 23 and cannot be removed.
7, 27 are provided. That is, the conveyor 2
The two idle pulleys 28, 28 are provided on the terminal side of 0, and the end portion of the conveyor 20 is bent downward in an L shape to form a bent portion 29. Then, the second blower nozzle 27 is opened in a portion thereof in the vertical direction in a substantially horizontal direction. Therefore, the Shirasu fish F transported to the end by the transport conveyor 20 generally falls by its own weight when it reaches the bent portion 29 bent downward,
Enter the lower receiving box 26. Further, a part of the head or tail may not get caught in the small holes formed in the discharge conveyor 30 or in the mesh of the net, but this is pushed out by the pressure of the wind blown from the second blow nozzle 27, It is dropped into the receiving box 26. 35 is the conveyor 20
It is a cover that covers the bent portion 29 of.

The discharge conveyor 30 is composed of two rollers 33, 33 provided on the left and right sides of the transfer conveyor 20, and a discharge belt 34 wound across the rollers 33, 33 across the transfer conveyor 20. Between the lower surface and the upper surface of the conveyor 20, there is formed a low parallel space through which the white fish F can pass. Therefore, the Shirasu fish F is transported to the transport conveyor 20 and passes thereunder, is transported to the end portion located above the receiving box 26, and from there, falls into the receiving box 26 by gravity.

Next, the operation of this embodiment will be described. First,
When the sorting device 10 is activated, the white-breasted fish F boiled in a kettle (not shown) drops onto the conveyor belt 23 thinly and widely from the other conveyors 15. Conveyor belt 23
When the Shirasu fish F is transported to above the blow nozzle 14, the Shirasu fish F is blown up by the wind sent from the blow nozzle 14 through the transport belt 23. The blown up Shirasu fish F immediately enters the collection box 31, and subsequently, as shown in FIG.
Even if it is lifted up from the above, it immediately falls onto the original conveyor 23 and continues its transportation. Of the blown-up Shirasu fish F, the one that has spread from the front of the blower nozzle 14 to the left and right hits the side wall of the collection box 31, falls, and is returned to the inside of the conveyor belt by the guide plate 32.

Small shrimp, small crab, etc. mixed in the Shirasu fish F have a large surface area as compared with the weight, and thus are strongly blown by the air sent from the air blowing nozzle 14 and are blown away far away, and the conveyor belt 23. It reaches the top of the discharge belt 34 without falling down, or jumps over the discharge belt 30 and hits the inner surface of the collection box 31 at the tip of the belt to lose its speed, and falls onto the discharge belt 30 by gravity. Thus, Shirasu Fish F
And small shrimps and small crabs mixed therein are automatically separated, and the latter is discharged to the side of the conveyor belt 23 by the discharge conveyor 30.

In the above description, the scope of the present invention is not limited by the type of shirasu fish,
It can be applied not only to so-called shirasu but also to all shirasu fish used as a raw material for "niboshi". The conveyor may be transferred in the up or down direction.

[0020]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, since the Shirasu fish are lifted from the conveyor by the wind force, the Shirasu fish can be improved in quality without being damaged. In addition, the Shirasu fish lifted by the wind force does not scatter outside the conveyor belt. Further, there is an effect that the transfer conveyor and the discharge conveyor are provided so as to intersect with each other, and their installation areas are small.

[Brief description of drawings]

FIG. 1 is a side view of a sorting device 10 which is an embodiment of the present invention.

FIG. 2 is a side view corresponding to FIG. 1 showing a state in which an outer plate 12 is removed.

FIG. 3 is an arrow view III thereof.

[Explanation of symbols]

 10 Shirasu Fish Sorting Device 11 Support Frame 13 Blower 17 Flexible Conduit 20 Conveyor Conveyor 23 Conveyor Belt 24 Blower Nozzle 25 Air Volume Control Valve 26 Receiving Box 27 Blower Port 29 Bending Section 30 Discharging Conveyor 31 Collection Box 32 Guide Plate 34 Discharging belt

Claims (5)

[Claims] 1. A transport conveyor for transporting small fish to be sorted, and a discharge conveyor provided above the transport conveyor and intersecting with the transport conveyor, and obliquely upward on a lower surface of the transport belt of the transport conveyor. A small fish sorting device such as dried shirasu, in which a blowing nozzle is opened toward the outlet and the discharge conveyor is arranged in the downstream direction of the blowing nozzle. 2. The small fish sorter according to claim 1, wherein the blower nozzle is oriented in the moving direction of the conveyor belt. 3. The small fish sorter according to claim 1, wherein the blower nozzle is oriented in a direction opposite to the direction in which the conveyor belt moves. 4. The support conveyor according to claim 1, wherein the transfer conveyor and the discharge conveyor are supported on an upper portion of a box-shaped support frame, and a blower is housed inside the support frame, and the blower and the blow nozzle are provided. A small fish sorter such as dried shirasu that is connected by a flexible conduit. 5. The small fish sorter according to claim 1, wherein a catch box having a bottom surface and a side surface on the side of the air blower opening is provided on an upper portion of the discharge conveyor.