JP7249724B2 - SEAFOOD FRESH KEEPING METHOD AND SEAFOOD WASHER - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fish and shellfish washing machine, and more particularly to a fish and shellfish washing machine equipped with a helical screw that rotates in a drum and washing while feeding fish and shellfish.

Many people dislike the stink of seafood. This stench is a reason to dislike fish and shellfish, and makes one feel that the freshness of fish and shellfish has decreased. In particular, fish and shellfish caught in a bottom trawler are landed covered in mud, and Pseudomonas bacteria, which decomposes and emits a foul odor, live in the mud on the seafloor in concentrations more than 1,000 times higher than in seawater. , attaches to slime (mucus) on the body surface of fish and shellfish in bag nets. This slime is food for bacteria, grows vigorously at 5°C or higher, and reaches a concentration in a short period of time at which it emits a foul odor due to deterioration of freshness. Thus, the odor emanating from the body surface of fish and shellfish is an odor emitted with increased concentration due to the active activity of putrefactive bacteria adhering to the fish and shellfish. Removal of slime on the body surface is also removal of bacteria, and is an important pillar for maintaining high freshness of seafood, along with lowering the temperature to cool the body (10°C → 5°C or less).

Conventionally, fish and shellfish washing machines have been conceived and marketed. For example, in the washing machine of Patent Document 1, it is described that a fish is passed by a chain conveyor between the bristles of two revolving brushes while spraying washing water. The washing machine of Patent Document 2 describes that fish are introduced between three or more rotating spiral brushes while circulating washing water is sprayed from above.

The washing machine of Patent Document 3 describes an apparatus in which a rotary drum for conveying fish is tilted and has a large number of holes in a washing tank from which air bubbles are jetted. A helical dividing wall is provided in the rotating drum, and a brush is provided at a predetermined position. ing.

In addition, in the movie of Non-Patent Document 1, a washer is disclosed in which a spiral partition wall is provided in a horizontally installed rotating drum, and squid is sent through shallow washing water.

JP 2011-15619 A JP-A-11-178502 Japanese Patent Publication No. 5-17820

Tsunezawa Co., Ltd. [online], squid cleaning machine and sample video, [searched on April 16, 2018], Internet <URL: http://www.tsunezawa.co.jp/cgi -local/page.cgi?MODE=1&ID1=001&ID2=000&ID3=0102&LANG=0>

Many fishermen are sensitive to the freshness of fish, and are concerned about the freshness of fish before putting it up for auction. Under such circumstances, the slimy substance on the body surface of fish and shellfish is a protein secreted from the mucus line, and its constant secretion originally prevents bacteria from entering the body. For this reason, the removal of slime has long been generally prohibited. In addition, peeling off the scales is called net slippage, and it was most hated by those involved in the fishing industry.

In addition, simple washing such as washing off adhering mud may be performed, but unlike washing for food processing, seafood must be washed as much as possible so as not to damage it. must. It should also be washed as soon as possible to remove Pseudomonas bacteria. Also, if the fish and shellfish can be washed at once, the washing time can be shortened and the freshness can be maintained.

It is also possible to wash the fish and shellfish on land after returning to the port, but considering the growth of bacteria, it is best to remove slime from the fish and shellfish on the fishing boat. Therefore, if washing is performed on a fishing boat, it is desirable that the washing machine be as small as possible, and it is more efficient to wash various kinds of fish and shellfish together.

In particular, bottom trawling is a type of fishing known as bycatch. Therefore, in the case of bottom trawling, it is better to be able to wash the fish together rather than sorting the fish finely each time, which leads to prevention of putrid smell and maintenance of freshness.

Also, if the washer is made smaller and more compact, it will be possible to install it in a narrow space on the ship. In addition, if washing machines can be supplied at low cost, many fishermen will be able to purchase them realistically.

In response to such a problem, the washing machine of Patent Document 1 has a problem that it is large because it is a chain conveyor, and it takes time because it has to be passed through the brush one by one. I have a problem that I can't. Moreover, there is a problem that the fish are damaged because the fish are caught by the sharp protrusions of the chain and the metal brushes are also used.

The washing machine of Patent Document 2 has a problem that it takes a long time because each fish has to be passed through the brush, and it cannot be applied to various types of fish and shellfish. In the first place, the washing machine of Patent Document 2 is a pre-process of fish body processing such as removal of internal organs, removal of ovaries, opening processing, and three-piece grate, and the fish is sandwiched between three or more spiral rotating brushes. There is a problem that the fish are damaged because they are sent as

In the washing machine of Patent Document 3, the brush does not reach fish and shellfish that float too much in the water near the inlet, resulting in non-uniform sliminess and bacteria removal. This washing machine uses a water tank-type washing tank (7), and the water in the tank is drained by overflow or by opening the drain opening (30) each time. . Therefore, since washing is basically continued with the water remaining in the tank, the washing is performed with extremely unsanitary water. In addition, since a washing tank containing a rotating drum is required, the size of the apparatus is increased. In addition, since the rotary drum in the cleaning tank is rotated, the weight of the cleaning water is added, and the driving force is increased, resulting in an increase in the size of the apparatus. In addition, since this washing machine has a structure in which the rotating drum itself rotates, the rotation of the rotating drum in the vicinity of the exit causes the fish to be lifted up and then dropped, which is repeated, resulting in damage to the fish. In addition, since this washing machine has a structure using a spiral dividing wall to which expanded metal is stuck, there is a problem that the dividing wall damages the fish and shellfish.

As you can see from the video, the washing machine of Non-Patent Document 1 causes fish and shellfish to fall and hit the ridges of the spiral partition walls, which seriously damages the fish and shellfish (the fishing boat shakes due to pitching and rolling). and more damage). In addition, since this washing machine does not have a brush, the removal of slime and germs is insufficient. Moreover, this washing machine has a problem that a large amount of power is required to rotate the drum.

In addition, none of the four documents mentions the purpose of removing the slime from the seafood before putting it up for auction. In addition, the purpose of removing slime from fish and shellfish using a fish and shellfish washing machine on a fishing boat is not described.

An object of the present invention is to provide a method for maintaining the freshness of seafood by washing the seafood. Another object of the present invention is to provide a fish and shellfish washing machine capable of removing slime while keeping the fish and shellfish alive as much as possible without damaging them. Another object of the present invention is to provide a fish and shellfish washing machine capable of washing various kinds of fish and shellfish together. Another object of the present invention is to provide a low-cost, small-sized fish and shellfish washing machine.

To achieve the above object, the fish and shellfish washing machine of the present invention comprises a drum having an inlet and an outlet for fish and shellfish, a spiral screw rotating in the drum, and washing water jetted into the drum. A brush is provided between the nozzle and the helix of the screw.

According to the present invention, the fish and shellfish are pushed out from the inlet to the outlet by the screw together with the jetted wash water. At this time, since the drum itself does not rotate, the seafood does not fall due to the rotation of the drum, so that the seafood is less damaged. Further, since the brush rotates together with the screw to roll the seafood, slime can be evenly removed. In addition, since a plurality of fishes and shellfishes can be put in, it can be washed in a short time compared to a washing machine that puts in one by one. Also, when the washing machine shakes due to the pitching or rolling of the fishing boat, the shaking of the fish and shellfish can be kept between the pitches of the screw.

Therefore, cleaning of fish and shellfish to remove slime has been generally regarded as a taboo in the past. It is possible to sell seafood while maintaining its freshness.

Moreover, since the present invention has a simple structure, it is possible to provide a fish and shellfish washing apparatus that is small, inexpensive, and does not require a large amount of power. This makes it easy to mount on a fishing boat. If it becomes possible to load it on a fishing boat, it will be possible to remove slime and various bacteria immediately after frying, so it will be possible to maintain freshness for a long time, reduce bad odors, and make effective use of the time until arrival at the fishing port. In addition, fish and shellfish that have been freed from slime and germs can be sold quickly.
Further, in the fish and shellfish washing machine of the present invention, it is preferable to provide a weir that rotates together with the screw and has an outflow hole that intermittently allows discharge from the outlet.

According to the present invention, the washed water contaminated with the removed slime and germs is intermittently discharged, so that the washed water used to wash the seafood is very clean. In addition, the damming allows fish and shellfish to survive in the collected wash water, increasing the freshness of the fish and shellfish. Also, since the fish floats, the scales are less likely to come off. In addition, since intermittent damming can be automatically performed, it is possible to reduce manpower. Moreover, since it is a simple structure, it becomes small and cheap.
Moreover, in the fish/shellfish washing machine of the present invention, it is preferable that the nozzle is provided below the drum.

As a result, the wash water can be jetted out from under the wash water stored by the weir, the fish and shellfish can be lifted up in the wash water, and the fish and shellfish can be prevented from staying at the bottom of the drum. do.

Further, in the fish and shellfish washing machine of the present invention, it is preferable to provide an escape hole for limiting the depth of washing water accumulated in the drum. This prevents the fish and shellfish from floating too much and not coming into contact with the brush. In addition, foreign matter, sliminess, and germs floating on the surface of the washing water are washed away.

Moreover, in the fish/shellfish washing machine of the present invention, it is preferable that the brush is rotatably held. As a result, it is possible to avoid the excessive rubbing force of the brush on the fish and shellfish, so that damage to the fish and shellfish can be reduced.

1 is a partial cross-sectional view showing a main part of a fish and shellfish washing machine according to an embodiment of the present invention; FIG. FIG. 2 is a right side view of FIG. 1; It is a cross-sectional side view which shows the position of the brush of embodiment, and washing water. It is a figure which shows the operation|movement of a weir. It is an imaging which shows the modification of arrangement|positioning of a brush.

Hereinafter, modes for carrying out the present invention will be described with reference to embodiments and drawings, but the embodiments shown below are not intended to limit the present invention to those described herein, The invention can equally be applied to those with various modifications without departing from the technical idea shown in the claims. In each drawing used for explanation in this specification, each member is displayed with a different scale in order to make each member recognizable on the drawing. are not shown in proportion to the dimensions of the

[Embodiment]
1 to 3, the configuration of the main part of a fish and shellfish washing machine 100 according to an embodiment of the present invention will be described. A two-dot chain line in FIGS. 1 and 3 indicates the water level of the washing water W. As shown in FIG. The fish and shellfish washing machine 100 of this embodiment is mounted on a fishing boat and uses cold seawater as the washing water W. As shown in FIG.

The fish and shellfish washing machine 100 includes a cylindrical drum 1 for washing inside, a screw 2 for sending the fish and shellfish F and washing water W in the drum 1 to the discharge side, and a brush 3 for removing the sliminess of the fish and shellfish F. , a weir plate 4 that intermittently discharges the fish and shellfish F and the wash water W, a drive unit 5 that rotates the screw 2 and the weir plate 4, a jetting unit 6 that jets the wash water W, and component parts. It consists of a mounting base 7 made of stainless steel.

The drum 1 includes a cylinder 11, a front lid 12 closing the front side of the cylinder 11, a rear lid 13 closing the rear side of the cylinder 11, and a fish F input port provided by opening the upper front side of the cylinder 11. 14, a discharge port 15 opened below the rear lid 13, a front bearing 16 provided on the front lid 12 and a rear bearing 17 provided on the rear lid 13 for axially supporting the screw 2. .

The tube 11 is specifically a commercially available vinyl chloride tube having an inner diameter of 580 mm, a wall thickness of 20 mm, and a length of about 1500 mm. Note that the tube 11 may be made of metal such as stainless steel. Moreover, although not shown, it is preferable to provide, for example, about two windows that can be opened and closed for inspection and part replacement on the side surface of the cylinder 11 .
The front lid 12, the rear lid 13 and the slot 14 are made of metal. The front bearing 16 and rear bearing 17 are billow-type bearing units with cast iron covers.

The screw 2 is made of stainless metal or resin in consideration of maintenance and durability, and consists of a shaft 21 , blades 22 in which a metal plate is spiraled four times, and a latch 23 . The diameter of the shaft 21 where the blades 22 are welded is approximately 90 mm. The latch 23 is semi-circular, like a donut cut in half, and is welded to the blade 22 . The vane 22 is formed into a spiral shape by connecting four parts, which are formed by cutting one radius of a disc with a hole in the center and rolling it in the axial direction, by welding.

The brush 3 has loose bristles 31 made of resin fibers such as nylon 66 or vegetable fibers such as palm, which are held by stainless steel strands 32 . Further, the brush 3 has the hooks 33 attached to both ends of the stranded wire 32, and has a diameter of about 100 mm and a total length of slightly less than 400 mm. This eggplant hook 33 has a hook portion 331 and a mounting portion 332 that are rotatable, and is hooked onto the latch 23 of the screw 2 . A total of about 30 brushes 3 are detachably hung between the spiral pitches of the blades 22 parallel to the shaft 21 of the screw 2, and the bristles 31 themselves are rotated by the hook 33.

The attachment portion 332 makes it possible to easily replace the brush 3 whose bristles 31 have worn out. It is very preferable that the brush 3 can be easily replaced, especially when the fish and shellfish washing machine 100 is mounted on a fishing boat.

The weir plate 4 is a vinyl chloride disk having a thickness of 15 mm and a diameter slightly smaller than the inner diameter of the cylinder 11. It is fixed to the shaft 21 of the screw 2 by a metal fitting 41, and positioned behind the blades 22. It is between the lids 13 . As shown in FIG. 1, a constant space is provided between the barrier plate 4 and the rear lid 13 (discharge port 15), and this space is approximately 150 to 160 mm.

The barrier plate 4 is also formed with an outflow hole 42 and three overflow holes 43, and a packing 44 is attached. The dam plate 4 performs damming and overflow, which will be described in detail later with reference to FIG.

The drive unit 5 includes a motor 51 composed of an inverter motor capable of steplessly changing its rotational speed, a small gear 52 fixed to the shaft 511 of the motor 51, a large gear 53 fixed to the shaft 21 of the screw 2, It consists of a case 54 covering these. Due to the difference in pitch circle size between the small gear 52 and the large gear 53, the rotation of the motor 51 is decelerated and the screw 2 rotates three times per minute. The method of changing the rotation speed of the screw 2 is not limited to the inverter motor, and for example, there is a method of changing the diameter of the pitch circle of the gear.

When the fish and shellfish washing machine 100 of the present embodiment was actually used to try washing, when the rotation of the screw 2 was set to 5 rotations per minute, the rotation was too fast and the washing time was short to remove slime. . However, the number of revolutions of the screw 2 naturally varies depending on the type of fish, the usage conditions, the size of the device, and the like.

As shown in FIG. 3 , the jetting section 6 comprises a washing water tank 61 , a submersible pump 62 , a water supply pipe 63 and a nozzle 64 . A washing water tank 61 contains washing water W, which is cold seawater supplied from a fishing boat. The cold seawater is cold seawater mixed with fresh water cooled with ice, and is water suitable for keeping the fish and shellfish F fresh. Even when cooling seawater is supplied from a fishing boat, 50-70% seawater with ice is used for the wash water W, but even if cooling seawater is not available, adding 30-50% ice will cool the water to 5°C or less. You can get seawater.

The submersible pump 62 is placed in the wash water W in the wash water tank 61 and discharges the wash water W. The submersible pump 62 has a filter 622 in the water suction pipe 621 to prevent foreign matter from entering. In this embodiment, a submersible pump 62 capable of discharging about 120 to 140 liters per minute is used.

The water supply pipe 63 is a water channel that guides the washing water W discharged from the submersible pump 62 to each nozzle 64 . The water supply pipe 63 has a filter portion 65 near the submersible pump 62 . The filter part 65 has a filter 651 that is inclined with respect to the flow direction. This inclination makes it possible to widen the surface of the mesh of the filter 651, and furthermore, since foreign substances are brought to one side, clogging is less likely to occur. The filter 651 has a finer mesh than the filter 622 of the submersible pump 62, and the filter part 65 is detachable with a plurality of screws N for cleaning.

The nozzles 64 are holes with a diameter of 3 mm formed in the cylinder 11, and as shown in FIGS. The upper nozzle 64 has an image of water sprinkling in a waterfall, and the momentum of the jet assists the peeling of slime from the fish and shellfish F, promotes the movement of the brush 3, and discharges a large amount of washing water W.

Since the lower nozzle 64 is ejected from the washing water W, it has little effect of washing away the slime and germs, but has the effect of making the seafood F float in the washing water W and preventing it from accumulating at the bottom of the drum 1. be. By floating the fishes and shellfishes F in the washing water W, the scales are less likely to be peeled off, and the brush 3 can be evenly applied with an appropriate force to remove slime and germs. Uniform surface cleaning is possible.

In addition, although not shown, valves capable of opening and closing the respective water channels and adjusting the flow rate are attached to the water supply pipes 63 extending to the upper and lower six rows. A valve is also attached to the water channel from the submersible pump 62 in the same manner.

Components other than a washing tank 61 and a submersible pump 62 are attached to the mounting base 7, and four adjusters 71 are used to adjust the inclination of the drum 1. As shown in FIG. The adjuster 71 allows the fish and shellfish washing machine 100 to be easily installed substantially parallel. This adjuster 71 is effective not only when the fish and shellfish washing machine 100 is installed on land, but especially when it is installed on a fishing boat. Since the deck of a fishing boat is usually inclined, the adjuster 71 makes it possible to easily install the fish and shellfish washing machine 100 in parallel on the fishing boat.

Next, damming and overflow will be described with reference to FIG. A chain double-dashed line in FIG. 4 indicates the water level. A dam plate 4 that is fixed to the screw 2 and rotates is a disk that intermittently blocks the wash water W in the drum 1 from being discharged from the discharge port 15 of the rear lid 13 . When the blades 22 of the screw 2 feed the seafood F toward the shuttering plate 4, the shuttering plate 4 rotates clockwise as indicated by the thin arrow in FIG.

The dam plate 4 has a fan-shaped outflow hole 42 for releasing the dam and limits the depth of the wash water W (two-dot chain lines in FIGS. 4(C) and 4(D)) accumulated by the dam to 17 cm. An overflow hole 43 is formed for this purpose. As shown in FIG. 4, the overflow hole 43 is formed by a large number of holes arranged on an arc, and the hole diameters of these holes are small enough to prevent the fish and shellfish F from falling out. It should be noted that the overflow hole 43 needs to be provided while considering the strength of the barrier plate 4 as well. In the fish and shellfish washing machine 100 of the present embodiment, holes with a diameter of 8 mm are provided at intervals of 50 to 60 mm.

As shown in FIGS. 1 and 3, the side wall of the cylinder 11 is also formed with an overflow hole 18 for limiting the depth of the washing water W to 17 cm. The diameter of the overflow hole 18 is also a through hole with a diameter of 8 mm, for example, at intervals of 30 mm to 50 mm so that the fishes and shellfishes F do not escape.

As shown in FIG. 2, the fan-shaped right end of the outflow hole 42 is the end of the blade 22 (22a in FIG. 2) so that the fish and shellfish F gathered toward the end of the blade 22 can be discharged. is formed at a position consistent with

A packing 44 for preventing the wash water W from leaking from between the barrier plate 4 and the cylinder 11 is formed in a groove 45 having a width of 8 mm and a depth of 6 mm formed on the outer periphery of the barrier plate 4 (see the enlarged view of FIG. 1). can be detachably fitted in the The packing 44 and the groove 45 are not provided on the outer periphery of the angular region S (see FIG. 4A) from the center of the barrier plate 4 where the outflow hole 42 is included. Therefore, from the area S, dirty washing water and foreign matters such as sand after washing flow out.

In this embodiment, the cylinder 11 is made of vinyl chloride, but if it is made of vinyl chloride, the diameter error of the cylinder is generally about ±2 mm. Therefore, a silicon tube is used as the packing 44, and the hollowness of the tube is used to enable application to displacement with a large gap. Moreover, when the tube 11 is made of stainless steel, a larger dimensional error is likely to occur. Therefore, it is preferable that the packing 44 is made of silicon as in the present embodiment.

Next, (A) to (D) in FIG. 4 will be described. (A) to (D) show the rotating state of the barrier plate 4, and after (A), (B), (C), and (D), return to (A) and repeat the rotation. (A) shows a state in which the outflow hole 42 is positioned downward. At this time, the fish and shellfish F and the stored wash water W are discharged, and the water level of the wash water W reaches the lowest level. (B) is a state in which the shutter plate 4 rotates from the state of (A), the lowermost portion 42a of the outflow hole 42 begins to rise, and the wash water W begins to accumulate. (C) shows a state in which the shutter plate 4 has rotated from the state in (B). At this time, the collected wash water W overflows from the overflow hole 43, the water depth is kept at 17 cm, and the fishes and shellfishes F are gathered near the barrier plate 4.例文帳に追加(D) shows a state in which the shutter plate 4 rotates from the state of (C) and the lowermost portion 42a of the outflow hole 42 reaches the water surface of the washing water W. FIG. At this time, the fish and shellfishes F and the washing water W start to be discharged. Then, from the state of (D), the barrier plate 4 rotates to discharge the fish and shellfish F and the washing water W, and the state returns to (A).

Due to the above-described configuration and the action of damming and overflowing of the dam plate 4, the fish and shellfish washing machine 100 of the present embodiment washes the fish and shellfish F with the dammed washing water W that is maintained at a water depth within a predetermined range (17 cm). do. Further, the cleaning water W that has become dirty due to cleaning is periodically discharged as the screw 2 rotates.

As described above, in the fish/shellfish washing machine 100, the nozzles 64 for ejecting the washing water W are provided not only above but also below the washing water. Further, the drum 1 itself does not rotate, but the screw 2 rotates to draw the fish F and the washing water W after washing toward the discharging direction. Further, the brush 3 is rotatably supported in the helix of the screw 2, and is moved irregularly by the jetting of the washing water W from the upper nozzle 64 to come into contact with the fishes and shellfishes F in the washing water W, Peel off the sliminess of fish and shellfish F.

As a result, the fish and shellfish washing machine 100 of the present embodiment includes a non-rotating drum 1, a spiral screw 2, a brush 3 and a barrier plate 4 attached to the screw 2, a drive unit 5 for the screw 2, and a jet unit 6. Because of this configuration, the drum 1 itself is not rotated, and a large conveying device for the fishes and shellfishes F is not required.

Therefore, it becomes easy to mount the fish and shellfish washing machine 100 on a fishing boat. If it becomes possible to load it onto a fishing boat, it will be possible to remove slime and various bacteria on the fishing boat immediately after it is unloaded. . In addition, the time until arrival at the fishing port can be used to quickly remove slime and various germs, which makes effective use of time. Then, the fishes and shellfishes F from which the sliminess and germs have been removed can be quickly put out for auction.

In addition, the fish and shellfish washing machine 100 of the present embodiment can be used on land, and due to its small size and low cost, many fish and shellfish washing machines 100 can be installed in places such as washing places in fishing ports, so that it can be cleaned in a short time. The washing work can be finished, and the freshness of the seafood F can be kept longer. In addition, since the fish and shellfish F immediately after being caught retains the function of secreting slime, the slime can be easily removed, and the high freshness retention time can be greatly extended.

When the fish and shellfish washing machine 100 is used on land, seawater in the bay contains many harmful bacteria. It is preferred to use water. Therefore, washing on a fishing boat instead of on land has the advantage of reducing the washing cost because offshore seawater containing few bacteria can be used as the washing water W.

The fish/shellfish washing machine 100 of the present embodiment not only removes only slime from the fish/shellfish F regardless of the size or type of fish/shellfish F, but also cleans the fish/shellfish F while it is still in the cold washing water W. The temperature in the table can be lowered below 5°C. Therefore, even under general ice storage conditions, the color immediately after being caught can be maintained for about one week.

In the fish and shellfish washing machine 100 of the present embodiment, by using about 7 tons/hour of washing water W at 5° C. or less, peeled off slime and bacteria are constantly washed away, so that the degree of contamination of the washing water W does not increase. designed to In such a case, it is preferable to limit the processing amount of the seafood F to about 3 tons/hour at maximum.

In addition, the fish and shellfish washing machine 100 cleans the fish and shellfish F while the fish and shellfish F are soaked in the washing water W intermittently dammed, so that the fish and shellfish F can be washed while they are still alive, and the freshness can be maintained for a longer time thereafter. Moreover, since this intermittent damming is automatically performed by the dam plate 4 attached to the screw 2, the manpower is reduced. In addition, even if the fishes and shellfishes F are not finely sorted, it is possible to put in a plurality of different kinds of fisheries and shellfishes. can be done. This is particularly effective in bottom trawling boats that catch a wide variety of fish and shellfish F.

In addition, since the drum 1 itself does not rotate in the fish/shellfish washing machine 100, the fish/shellfish F does not drop due to the rotation of the drum 1, and the fish/shellfish F is less damaged. Further, when the washing machine is shaken by pitching or rolling of the fishing boat, the shaking of the seafood F can be kept between the pitches of the screw 2.例文帳に追加Further, since the brush 3 rotates together with the screw 2 to roll the seafood F, slime can be evenly removed. Moreover, the fishes and shellfishes F can be floated by the nozzles 64 provided below the washing water, and the fishes and shellfishes F can be easily rolled by the brush 3. - 特許庁

In addition, since the fish/shellfish washing machine 100 discharges the washing water W contaminated with the removed slime and germs at the time of FIG. As a result, the seafood F can always be washed with clean washing water W. In addition, since the overflowing wash water W is flushed through the overflow hole 43, it is possible to prevent the seafood F from floating too much and not to come into contact with the brush 3, and to flush out the foreign matter, slime, and germs floating on the surface of the wash water W. be able to.

Also, the rotation function of the brush 3 by the eggplant hook 33 is a technique added as a result of experiments conducted by the inventor. Rotating the brush 3 avoids an excessive rubbing force, so that damage to the seafood F can be reduced. For example, when the fish F is caught on something and hits the brush 3 without floating, the brush 3 rotates so that the fish F is not subjected to excessive rubbing force.

In this embodiment, the dam plate 4 is automatically attached to the screw 2, but the damming method of the present invention is not limited to this. may be provided. Also, although the overflow hole 43 in this embodiment is provided in the barrier plate 4 , the overflow position of the present invention is not limited to this position, and the hole may be provided in the cylinder 11 of the drum 1 , for example.

A gap of about 150 to 160 mm is provided between the barrier plate 4 and the rear lid 13 (discharge port 15) of this embodiment. Initially, the inventor narrowed the gap between the weir plate 4 and the rear lid 13 to such an extent that they were in close contact with each other. This is because the seafood F is caught between the plate 4 and the back cover 13 that does not rotate, and damage such as cutting of the seafood F occurs. Therefore, by providing a sufficient space between the dam plate 4 and the rear lid 13 as in the present embodiment, this space serves as a pool for the fish F, which damages the fish F. can be prevented. This interval naturally varies depending on the size of the fish and shellfish washing machine 100 and the size of the fish and shellfish F to be cleaned. enough space.

In addition, although the fish and shellfish washing machine 100 described above is large in size and has a processing capacity of 3 tons/hour and uses 7 tons/hour of the washing water W, the size of the fish and shellfish washing machine 100 can be changed as appropriate. is. For example, it is possible to reduce the processing capacity to 1 ton/hour and the amount of cleaning water W to be used to 2 tons/hour.

[Modification]
Although the brush 3 is attached parallel to the shaft 21 of the screw 2 in the above embodiment, it may be attached obliquely to the shaft 21 as shown in FIG. As a result, the length of the brush 3A of the modified example can be extended to widen the range of contact with the fish F, and the fish F can be brought into contact with the blade 22 of the screw 2 at a large inclination with respect to the direction in which it is fed. It is possible to improve how to remove slime by contacting it.

[Test results]
Fish such as Pacific cod, sandfish, flatfish, red shrimp and grouper were actually washed on a fishing boat using the prototype of the fish and shellfish washing machine of the present invention. As a result, almost no damaged fish were found, and although some fish had some slimy fins, the slimy body surface was almost completely removed. Therefore, the fish and shellfish washing machine of the present invention is an effective apparatus for removing slime from various kinds of fish and shellfish F.
[Example of washing process]
In the above-mentioned washing process on a fishing boat, it is ideal to wash slime after hoisting, sorting and boxing.

In addition, the fish and shellfish washing machine 100 can also be applied to farmed fish and shellfish F. Aquaculture seawater is eutrophic and contains high concentrations of many bacteria, including harmful vibrios. For this reason, in the washing process of cultured fish, it is ideal to wash slime after picking and gill cutting, and then boxing.

Also, even when live fish are transported by truck or the like, it is ideal to wash slime after picking, put them in a live fish tank and ship them by truck. Washing slime can contribute to reducing the growth of bacteria in the tank. In addition, by performing slime washing, even in restaurants that handle live fish, bacterial growth can be suppressed in live fish tanks in the store.

100: Fish and Shellfish Washer 1: Drum 11: Cylinder 2: Screw 21: Shaft 22: Blade 3: Brush 33: Eggplant Can 4: Dam Board 42: Outflow Hole 43: Overflow Hole 44: Packing 6: Spout Portion 62: Submersible Pump 64: nozzle F: seafood W: washing water

Claims (3)

On a fishing boat engaged in bottom trawling,
Seafood net-flying process,
A washing step of removing slime from the body surface of the fish and shellfish by the above-mentioned fishing step using wash water in which the slime is removed;
consists of
The washing step includes
a non-rotating sideways drum with a seafood inlet and outlet;
a mounting base to which the drum is attached;
a helical vane screw that rotates within the drum;
a nozzle for ejecting washing water into the drum;
a brush mounted between the pitches of the helical vanes of the screw;
A method for maintaining freshness of seafood, characterized by being carried out using a seafood washing machine provided with . a non-rotating sideways drum with a seafood inlet and outlet;
a mounting base to which the drum is attached;
a helical vane screw that rotates within the drum;
a nozzle for ejecting washing water into the drum;
a brush mounted between the pitches of the helical vanes of the screw;
A fish and shellfish washing machine comprising: 3. The fish and shellfish washing machine according to claim 2, further comprising a weir that rotates together with said screw and has an outflow hole that intermittently allows discharge from said outlet.

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