JP2022172029A - Fish scaling device for fish body - Google Patents

Abstract

To provide a fish scaling device for fish body capable of efficiently and reliably removing all scales by evenly and repeatedly jetting high pressure water to all scales on the surface of the fish body.SOLUTION: A fish scaling device for fish body includes: conveyor means; and pressurized water jet means which jets high-pressure water to the surface of a fish body passing respective gaps for jetting pressurized water to the gaps for jetting pressurized water provided between endless belts of the conveyor means and removing scales of the fish body. The pressurized water jet means is provided with pressurized water jet nozzles which moves to columns of scales in a width direction of the fish body at high speed and removes scales of the fish body while the scales arranged in parallel in the width direction of the fish body are transported just for a distance equivalent to the length of the scales.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fish scale removing apparatus for removing scales from a fish by spraying pressure water on the fish being conveyed by a conveyer means.

Japanese Unexamined Patent Application Publication Nos. 2004-100001 and 2003-100000, for example, disclose apparatuses for removing fish scales by jetting water.

The fish scale remover described in Patent Document 1 is provided with conveyors composed of upper and lower conveyor belts for sandwiching and conveying the fish on the upstream side and the downstream side of the fish conveying path, respectively. Conveyor means is provided between the upstream conveyor portion and the downstream conveyor portion of both conveyors so that the fish being conveyed is exposed, and water is sprayed onto the surface of the fish through the gap of the conveyor means. It is equipped with a water injection means consisting of a plurality of water injection nozzles for removing fish scales.

The water injection means is disposed across the gap and attached to a sliding member slidably supported across the rotating shafts of the conveyor portions on both sides of the gap. While maintaining a substantially constant distance between the tip of the blade and the surface of the fish body, the scales are removed with a low water pressure jetted from the water jet nozzle.

At this time, the water injection nozzles are composed of two rows of nozzles. Water from the first row of water injection nozzles causes the scales of the fish to stand up, and water from the next row of water injection nozzles causes the fish scales to stand up. It is designed to peel off the scales.

On the other hand, the hydraulic scale removing device described in Patent Document 2 includes a vertical conveying device that circulates horizontally from the upstream side to the downstream side while holding a fish body, and an upper conveying device in the vertical conveying device. , and injection nozzles fixedly arranged on both left and right sides of the lower conveying device.

In the vertical conveying device, sprockets are attached to both left and right ends of sprocket shafts that are rotatably arranged on the upstream side and the downstream side, respectively. A horizontal wire is attached between each link of these left and right endless chains, and in the lower conveying device, an endless rope orthogonal to the horizontal wire is arranged between the sprocket shafts at predetermined intervals in the horizontal direction. These endless ropes and the horizontal wires form a multi-lattice net-like space in a plan view.

A plurality of horizontal wires stretched on the upper conveying device and a grid net made up of the horizontal wires and endless ropes provided on the lower conveying device form a fish conveying surface that conveys the fish while sandwiching it. ing.

Electric motors are fixedly arranged on both left and right sides of each of the upper and lower positions sandwiching this fish transport surface, one end of a turning arm is attached to the output shaft of each electric motor, and the other end of this turning arm (free end) ), the injection nozzle is inclined with respect to the fish-conveying surface from the outside in the left-right direction toward the center at a predetermined inclination angle, and is also inclined at a predetermined angle in the forward direction of the conveying direction with respect to the fish-conveying surface. It is slanted at an angle, and is configured to remove scales by injecting pressure water from the injection nozzle toward the fish body while rotating the swivel arm.

Japanese Unexamined Patent Application Publication No. 2011-83250 JP 2012-165721 A

According to the apparatus for removing scales from a fish described in Patent Document 1, the distance between the tip of the water injection nozzle and the surface of the fish is small when removing the scales of the fish. It is possible to remove scales, but since the water injection device is provided with a plurality of injection nozzles in the width direction (dorsal and ventral direction) of the fish conveyed by the conveyer means, these multiple In order to supply pressure water to the injection nozzle, not only is a relatively large pump required, but it is also difficult to completely strip off the scales of the fish with low-pressure water injection. Two rows of injection nozzles are provided with an interval between them, the scales on the surface of the fish body are erected by the injection water from the first row of injection nozzles, and the erected scales are stripped off by the injection water from the next row of injection nozzles. This not only complicates the structure of the water jetting means, but also lowers the ability to remove scales by jetting low-pressure water.

Furthermore, all the water injection nozzles of the water injection means are constructed so as to always inject water toward a fixed portion without changing the direction of water injection into the gaps of the conveyor means. Since the arrangement of the scales of the fish transported by the conveyor means differs depending on the size and type of the fish, the jet water from the water jet nozzle is directed to the part of the fish scales that is most efficiently stripped. It is not possible to intensively spray, and a situation occurs in which the spray cannot be applied to a part that is difficult to peel off, making it difficult to peel off the scales, and there is a risk that unremoved scales may remain on the surface of the fish body.

On the other hand, according to the hydraulic scale removing apparatus described in Patent Document 2, high-pressure water is sprayed from the injection nozzle onto the surface of the fish body which is held and transported by the vertical transport device. The high-pressure water from the jet nozzle is jetted through the cyclically moving upper and lower conveyors without support onto the surface of the fish sandwiched by the fish-conveying surfaces of these conveyors. Therefore, a part of the pressure water hits the horizontal wire or the endless rope that constitutes the vertical transfer device and disperses, not only causing a situation where the pressure water cannot be efficiently jetted to the surface of the fish body. Since part of the scales of the fish are held by the horizontal wires constituting the vertical conveying device, there is a problem that it is difficult to remove the scales of the fish.

Further, the injection nozzle for injecting pressure water onto the surface of the fish is attached to the other end of the turning arm whose one end is fixed to the output shaft of the electric motor, and is inclined at a predetermined angle from the outside to the center in the lateral direction with respect to the plane of conveying the fish. Since it is slanted at an angle and is also slanted at a predetermined angle in a direction facing the advancing side in the conveying direction with respect to the fish conveying surface, the injection nozzle directed toward the surface of the fish is able to wrap around the scales. The jet pressure acting on the scales while moving in a circling motion fluctuates, and there is a problem that all the scales cannot be peeled off efficiently with uniform high-pressure water.

This problem occurs even if the injection nozzle described in Patent Document 2 is arranged above the gap provided between the upstream conveyor portion and the downstream conveyor portion described in Patent Document 1. .

The present invention has been made in view of such problems, and the object thereof is to spray high-pressure water evenly and several times on all the scales on the surface of the fish to effectively remove all the scales. To provide a fish scale removing device capable of removing fish scales well and surely.

The fish scale removing device of the present invention is
Conveyor means including a first endless belt and a second endless belt, the facing surfaces of which are formed on the fish clamping and conveying surface;
A fish scale removing device comprising: pressure water jetting means for jetting high-pressure water onto the surface of a fish transported on the transport path in the transport path of the fish to remove scales from the fish. in
While the scales arranged in parallel in the width direction of the fish are conveyed by a distance corresponding to the length of the scales, the pressure water injection means moves the scale rows in the width direction of the fish at high speed several times. It is characterized by being equipped with a pressure water injection nozzle that removes the scales of the fish body.

In the fish scale removing device,
The first endless belt includes a first upstream endless belt and a first downstream endless belt, and pressure is applied between the first upstream endless belt and the first downstream endless belt in the fish transport path. There is a gap for water injection,
The pressure water injection means is configured to inject high-pressure water toward the surface of the fish passing through the pressure water injection gap toward the pressure water injection gap.

In the fish scale removing device,
The pressure water injection means is
A cylindrical fixed nozzle outer casing with a part of the outer peripheral surface facing the pressure water injection gap side;
a long hole opening toward the fish body in a part of the outer peripheral surface of the fixed nozzle outer casing;
a pressurized water receiving cylinder rotatably disposed in the fixed nozzle housing and connected to a pressurized water supply pipe;
It communicates with and is supported by the pressure water receiving cylinder, faces the long hole, and is rotated at high speed in the fixed nozzle outer casing together with the pressure water receiving cylinder by the pressure of the pressure water jetted from the tip. and a pressure water injection nozzle.

The pressure water injection means of the apparatus for removing scales from a fish of the present invention injects high-pressure water into the surface of the fish transported along the transport route to remove the scales from the surface of the fish. It has a pressure water injection nozzle, and the pressure water injection nozzle is used while the scales arranged in parallel in the width direction (dorsal and ventral direction) of the fish are conveyed by a distance corresponding to the length of the scale (cephalic direction). In addition, since it is configured to move at high speed in the width direction of the fish body several times with respect to the row of scales, high pressure water can be evenly sprayed several times on all the scales. The scales can be quickly erected by water, and at the same time, the scales can be instantly peeled off from the roots, so that the scales on the surface of the fish body can be removed efficiently and reliably.

In the fish scale removing apparatus, the pressurized water receiving cylinder is rotatably disposed in a fixed nozzle outer housing provided with an elongated hole opening toward the fish conveying path of the conveyor means, and the pressurized water receiving cylinder By supplying pressure water to the cylinder from the pressure water supply pipe of the external piping, the pressure water injection nozzle connected to the pressure water supply pipe receives the pressure water by the high pressure water injection reaction force from the pressure water injection nozzle. While rotating at high speed in the fixed nozzle outer casing together with the cylinder, when the pressure water injection nozzle faces a long hole that opens in a part of the outer peripheral surface of the fixed nozzle outer casing, the surface of the fish body is sprayed through this long hole. When configured to inject pressure water, there is no need for a separate rotation drive device for the pressure water injection nozzle. High-pressure water other than high-pressure water that can be rotated and that is jetted from long holes that open toward the fish transport path of the conveyor means is not scattered outside, and the inner peripheral surface of the fixed nozzle outer casing , and discharged from the housing of the fixed nozzle to the outside through the long hole or a suitable drain hole.

Furthermore, by varying the pressure of the high-pressure water jetted from the pressure water jet nozzle, the number of revolutions of the pressure water jet nozzle can be varied, and scales on the surface of the fish can be removed according to the type of fish body. Adjustments can be made for efficient and reliable removal.

FIG. 2 is a simplified side view of the fish scale removing apparatus of the present invention; FIG. 2 is a perspective view of a scale removing device for fish. FIG. 2 is a simplified side view showing the usage of the fish scale removing device. FIG. 2 is a rear view showing the scale removing device for fish. Sectional drawing which showed the pressure water injection means. Sectional drawing which showed the pressure water injection means. The schematic diagram which showed the removal state of the scale of the fish body by pressure water.

An example of the fish scale removing apparatus of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, the apparatus for removing fish scales comprises a conveyer means 1 for conveying a fish A from upstream to downstream while sandwiching it, and a high pressure pressure on the surface of the fish A conveyed by the conveyer means 1. pressure water injection means 7, 7 for removing the scales on the surface of the fish body A by injecting the pressure water W.

Conveyor means 1 comprises a first endless belt 2 and a second endless belt 3 . The first endless belt 2 includes a first upstream endless belt 2a and a first downstream endless belt 3a, and the second endless belt 3 includes a second upstream endless belt 2b and a second downstream endless belt 3b. , the facing surfaces of the first upstream endless belt 2a, the first downstream endless belt 3a, the second upstream endless belt 2b, and the second downstream endless belt 3b are used to sandwich and convey the fish A. It is formed on the faces 4,4.

A first endless belt 2 and a second endless belt 3 constituting the conveyor means 1, for example, a first upstream endless belt 2a provided on the upstream side, are endlessly stretched over a drive pulley 4a and a driven pulley 2a2. In addition, a tension pulley 2a3 and a pinching pulley 2a4 are arranged.

Similarly, the other endless belts 2b, 3a, 3b are also endlessly stretched between the driving pulley and the driven pulley, and have a tension pulley and a pinching pulley. In addition, since such a configuration is publicly known, detailed description thereof will be omitted.

Furthermore, between the first upstream endless belt 2a and the first downstream endless belt 3a, more specifically, the first upstream endless belt 2a and the first downstream endless belt 3a are respectively stretched to face each other. A pressure water injection gap 5 having a predetermined interval is provided between the pulleys.

Similarly, between the second upstream endless belt 2b and the second downstream endless belt 3b, more specifically, the opposing belt that spans the second upstream endless belt 2b and the second downstream endless belt 3b. A pressure water injection gap 6 having a predetermined interval is provided between the pulleys.

In the conveyor means 1, the length of the first upstream endless belt 2a from the conveying start side is longer than the length of the second upstream endless belt 2b, while the first downstream endless belt from the conveying end side The length of 3a is formed shorter than the length of the second downstream endless belt 3b.

Therefore, the pressure water injection gap 5 provided between the first upstream endless belt 2a and the first downstream endless belt 3a, and the gap 5 provided between the second upstream endless belt 2b and the second downstream endless belt 3b The pressure water injection gap 6 is provided at a constant interval in the conveying direction of the fish A, and the pressure water injection gap 6 provided on the upstream side has the first upstream endless belt 2a. A portion of the downward fish clamping and conveying surface is exposed downward through the pressure water jetting gap 6 .

On the other hand, part of the upward fish holding and conveying surface of the second downstream endless belt 3b is exposed upward through the pressure water jetting gap 5 provided on the downstream side. The pressure water injection gaps 5 and 6 may be conveyor means 1 in which one of the pressure water injection gaps is provided on the upstream side and the other pressure water injection gap is provided on the downstream side.

As shown in FIGS. 1 to 4, a pair of left and right pressure water injection means 7, 7 for removing the scales of the fish A conveyed by the conveyer means 1 are arranged in the pressure water injection gap 5. In addition, a pair of left and right pressure water injection means 7, 7 for removing the scales of the fish A conveyed by the conveyer means 1 are arranged in the pressure water injection gap 6 as well.

As shown in FIGS. 4 to 6, the pressure water injection means 7 includes a bottomed cylindrical nozzle housing 71 with one end closed and the other end open. The pressure water supply pipe 72 is inserted into the pressure water supply pipe 72, the pressure water receiving cylinder 73 is rotatably fitted to one end of the pressure water supply pipe 72, and the pressure and a pressure water injection nozzle 74 fixed in communication with the water receiving cylinder 73 .

The nozzle housing 71 of the pressure water jetting means 7 has a part of its outer peripheral surface directed toward the pressure water jetting gaps 5 and 6, and the outer peripheral surface facing the pressure water jetting gaps 5 and 6 has a , and a long hole 711 extending in the circumferential direction [the width direction of the fish A (dorsal and ventral direction)] is formed through the inner and outer peripheral surfaces thereof.

One end of a pressurized water supply pipe 72 for supplying pressurized water W is inserted and fixed in the nozzle outer casing 71 . The pressure water supply pipe 72 is arranged in such a manner that the axial center of one end thereof coincides with the axial center of the nozzle outer casing 71 .

A pressure water channel 721 with one end closed is formed in the pressure water supply pipe 72, and one end of the pressure water channel 721 extends radially in the radial direction and is open to the outer peripheral surface of the pressure water supply pipe 72. A plurality of water passage holes 722 are formed so as to communicate with water passage holes 733 of a pressure water receiving cylindrical body 73, which will be described later.

The pressurized water receiving cylinder 73 is formed with a shaft hole 731 penetrating between both end surfaces thereof, and this shaft hole 731 is rotatably received by one end of the pressurized water supply pipe 72 arranged in the nozzle outer casing 71. I have it fitted. The axial hole 731 of the pressurized water receiving cylinder 73 is formed to have a larger diameter than the outer diameter of one end of the pressurized water supply pipe 72 over the entire circumference at the intermediate portion in the axial direction. It has a large-diameter portion 732 that receives pressure water ejected from a plurality of water passage holes 722 . A water channel hole 733 is formed to penetrate between the outer peripheral portion of the large diameter portion 732 and the outer peripheral surface of the pressure water receiving cylindrical body 73, and the pressure water for injecting the pressure water W to the outer tip of the water channel hole 733 is formed. An injection nozzle 74 is attached.

The water channel hole 733 of the pressure water receiving cylinder 73 is slightly eccentric from the axial center of the pressure water receiving cylinder 73, and the pressure water jetted from the pressure water injection nozzle 74 is injected back through this slightly eccentric water channel hole 733. The force causes the pressure water injection nozzle 74 to rotate at high speed inside the fixed nozzle housing 71 together with the pressure water receiving cylindrical body 73 .

The pressure water injection nozzle 74 of the pressure water injection means 7 rotates at high speed in the fixed nozzle outer housing 71, and moves at high speed in the longitudinal direction of the long hole 711 through the long hole 711 when facing the long hole 711. It is configured to inject pressure water W onto the surface of the fish body A.

Two pressure water injection means 7 are arranged in each of the pressure water injection gaps 5 and 6 . One of the two pressure water jetting means 7, 7 arranged in each of the pressure water jetting gaps 5, 6, one of the pressure water jetting means 7 sprays the pressure water W jetted from its pressure water jetting nozzle 74. The pressure water jetting means 7 jets the pressure water W jetted from its pressure water jet nozzle 74 onto the abdomen side surface of the fish body A in the width direction (the surface from the center top in the width direction to the abdomen). It is configured to spray the dorsal surface in the width direction at A (the surface from the central top to the dorsal portion in the width direction). Therefore, the pressure water W jetted from both the pressure water jetting means 7 arranged in the respective pressure water jetting gaps 5 and 6 is jetted over the entire width direction of the fish body A, and the scales of the fish body A are fully sprayed. It is configured to be peeled off.

The pressure water W injected from the pressure water injection nozzle 74 of the pressure water injection means 7 is directed in a direction inclined with respect to the surface of the fish body A (in a direction inclined toward the head side or the caudal fin side, preferably the direction shown in FIG. 3). The scales on the surface of the fish are jetted from the direction inclined toward the caudal fin side, and high pressure water W is sprayed on the scales from an oblique direction for a plurality of times. It is designed so that the scales can be quickly erected by applying an oblique pressing force, and at the same time, they can be peeled off instantly from the base.

Next, how to use the fish scale removing apparatus will be described. By driving the driving pulleys of the first upstream endless belt 2a, the first downstream endless belt 3a, the second upstream endless belt 2b and the second downstream endless belt 3b of the conveyor means 1, the first upstream endless belt is driven. The fish nipping and conveying surface 4 formed by the upper and lower surfaces of the belt 2a, the first downstream endless belt 3a, the second upstream endless belt 2b, and the second downstream endless belt 3b is arranged in the fish conveying direction (in FIG. 1, the plane of the paper). from right to left).

An opening at the beginning of the conveyance of the upper and lower facing surfaces of the first endless belt 2 and the second endless belt 3 in the conveyor means 1, that is, the beginning of the conveyance of the upper and lower facing surfaces of the first upstream endless belt 2a and the second upstream endless belt 2b. The fish body A is fed from the opening of the head side in a lying state, and the fish body A is clamped from above and below by the fish body clamping and conveying surfaces 4, 4, and the fish body A is transported in its length direction (passing through the head and tail fin). direction) is in the transport direction.

When the fish body A passes through the pressure water injection gaps 5 and 6, a pair of left and right pressure water injection means 7 and 7 are provided in each of the pressure water injection gaps 5 and 6. The pressure water W jetted from the pressure water jet nozzle 74 is sprayed on the scales of the fish body A from above and below.

When the pressure water W is sprayed on the scales of the fish A from the pressure water injection nozzle 74 of the pressure water injection means 7, the fish A moves along the endless belt (the first upstream endless belt 2a or the second endless belt 2a) facing the pressure water injection means 7. It is received and positioned by the downstream endless belt 3b), and is configured to reduce variation in the distance from the pressure water injection nozzle 74 of the pressure water injection means 7 to the surface of the fish body A. Therefore, it is possible to reduce fluctuations in the pressure, amount, and frequency of spraying of the pressure water sprayed from the pressure water spray nozzle 74 of the pressure water spraying means 7 onto the scales of the fish A, and to always remove the scales of the fish A reliably. configured to allow

The pressure water W injected from the pressure water injection nozzle 74 of the pressure water injection means 7 passes through the elongated hole 711 in the fixed nozzle housing 71, and the scales arranged in parallel in the width direction (dorsal and ventral direction) of the fish body. While being transported by a distance corresponding to the length of the scale in the direction connecting the head and tail fin, the scale row was evenly sprayed several times while moving at high speed in the width direction of the fish body, High pressure water W can be reliably sprayed to all the scales a plurality of times.

Moreover, as shown in FIG. 7, the pressure water W jetted from the pressure water jet nozzle is sprayed multiple times against the scales of the fish body A from an oblique direction, so that the scales 81 are exposed to the base 811 of the scales. , and the stress that pushes the erected scales 81 back toward the fish body A with the base portion 811 as a fulcrum applied with a time lag. As a result, the scale 81 moves in an undulating direction (vertical direction in FIG. 7) with the root portion 811 as a fulcrum, weakening the attachment portion of the scale 81 to the fish body A at the root portion 811 and attaching it to the fish body A. The attachment of the base portion 811 of the scale 81 that is present is released, and the scale 81 is quickly removed from the surface of the fish body A.

Then, the pressure water W can also enter the gap K between the scales 81, which are in an upright state due to the impact force applied by the pressure water W, and the scales 82 adjacent to the transport starting end side of the fish body A, and the pressure water W can be raised. It is possible to promote peeling of the scales 81 in the state.

Then, while rotating the pressure water injection nozzle 74 at high speed, the pressure water W is sprayed onto the surface of the fish body A with a sufficient spraying length through the long hole 711. , the pressure water W can be sprayed on the surface of the fish body A with a sufficient spraying length, and the entire scale row from the center in the width direction of the fish body A to the ventral side or the dorsal fin side can be sprayed by one pressure water spray nozzle 74. The pressure water W can be reliably sprayed.

A pair of left and right pressure water injection means 7, 7 disposed in the pressure water injection gaps 5, 6 respectively sprays pressure water onto the surface of the fish A from above and below, so that the entire surface of the fish A is sprayed with pressure water W. By being sprayed, the scales of the fish body A can be removed entirely.

Therefore, while minimizing the pressure loss of the pressure water W jetted from the pressure water jet nozzle 74, the pressure water W can be sprayed onto the surface of the fish body A, and the supply pressure supplied to the pressure water supply pipe can be minimized. As a result, the size of the pressure pump can be reduced, power consumption can be suppressed, and the fish scale removing apparatus can be driven without construction of power supply equipment.

In addition, since the pressure water W can be sprayed onto the scales of the fish A with a sufficient pressure from the pressure water injection nozzle 74, the amount of the pressure water W sprayed onto the scales can be reduced. There is no need to circulate the pressurized water W as in , and it is also excellent in terms of hygiene.

In the fish scale removal device described above, the case where the first endless belt 2 and the second endless belt 3 are arranged with a predetermined interval in the vertical direction has been described as an example, but the first endless belt 2 and the second endless belt 2. The endless belts 3 may be arranged at predetermined intervals in the left-right direction (in FIG. 1, the direction perpendicular to the plane of the paper). In this case, the fish scale removing device shown in FIG. 1 is a plan view seen from above and below. Since each configuration of the fish scale removing apparatus shown in FIG. 1 is the same, the explanation is omitted. In use, the opening at the beginning of conveyance of the left and right facing surfaces of the first endless belt 2 and the second endless belt 3 in the conveyor means 1, that is, the facing surfaces of the first upstream endless belt 2a and the second upstream endless belt 2b The fish body A is fed from the head side of the fish body A with its dorsal and ventral direction facing up and down from the opening at the transport start end of the (left and right facing surface). Then, the pressure water W jetted from the pressure water injection nozzle 74 of the pressure water injection means 7 is sprayed from the left and right on the fish body A which is sandwiched between the fish body holding and transport surfaces 4, 4 and transported.

In the fish scale removing apparatus described above, the first endless belt 2 is the first upstream endless belt 2a and the second downstream endless belt 2b, and the second endless belt 3 is the second upstream endless belt 2b and the second downstream endless belt. Although the case where the endless belt 3b is included is shown, the first endless belt 2 and the second endless belt 3 move the fish A in the conveying direction by means of the fish nipping and conveying surfaces 4, 4 composed of the upper and lower facing surfaces of these endless belts. The number and arrangement method of the endless belts constituting each of the first endless belt 2 and the second endless belt 3 are not particularly limited as long as they are configured to be transportable. For example, if the fish A can be transported in the transport direction by the first upstream side 2a of the first endless belt 2 and the second upstream endless belt 2b and the second downstream endless belt 3b of the second endless belt 3 , the first downstream endless belt 3a of the first endless belt 2 need not necessarily be arranged.

In the fish scale removing apparatus described above, the pressure water jetting means 7 jets the pressure water from the pressure water jetting nozzle 74 through the pressure water jetting gaps 5 and 6 formed between the endless belts to the conveyer means 1. , the pressure water jet means 7 need not be disposed between the endless belts, and the pressure water jet nozzle It suffices if it is arranged so that the pressure water jetted from 74 is sprayed onto the surface of the fish body A conveyed on the conveying route by the conveyor means 1 . Therefore, when the first downstream endless belt 3a of the first endless belt 2 is not arranged, the pressure water jetting means 7 may be arranged on the conveying end side of the first upstream endless belt 2a.

In the above-described fish scale removing device, the pressure water injection means 7 sprays the pressure water injected from the pressure water injection nozzle 74 onto the fish sandwiching surface constituted by the facing surfaces of the first endless belt 2 and the second endless belt 3 . A case has been described where they are arranged so as to blow toward the conveying surfaces 4 , 4 . Furthermore, the pressure water injection means 7 is applied to either one side or both sides of the gap formed between the facing surfaces of the first endless belt 2 and the second endless belt 3 (in the conveying direction of the fish holding and conveying surfaces 4, 4). Either one side or both sides of the intersecting or orthogonal direction), and the pressure water jetted from the pressure water jetting means 7 is pinched and conveyed by the fish body pinching and conveying surfaces 4, 4 of the conveyor means 1. It may be sprayed on the fish body A from the dorsal side or ventral side of the fish body A. It is preferable that the jetting direction of the pressurized water jetted from the pressurized water jetting means 7 is a direction substantially along the surface direction of the fish holding and conveying surfaces 4 , 4 .

In this case, the pressure water injection means 7 is disposed in a state in which the elongated hole 711 of the fixed nozzle casing 71 is sandwiched between the fish body clamping and transporting surfaces 4, 4 of the conveyor means 1, and faces the fish body A to be transported. be. The elongated hole 711 of the fixed nozzle outer housing 71 of the pressure water injection means 7 is arranged in a state in which the length direction thereof is oriented in the conveying direction of the fish body A, and the pressure water injected from the pressure water injection nozzle 74 W is evenly sprayed on the surface of the fish A from the side through the long hole 711 of the fixed nozzle casing 71 while moving at high speed in the same or opposite direction as the conveying direction. Since the pressure water W is sprayed from the dorsal or ventral direction of the fish A, the pressure water W is effective between the scales 81 and the scales 82 arranged adjacent to the scales 81 in the transport direction of the fish A. It can be made to enter targetally, and the effect of removing the scales of the fish body A can be improved.

1 conveyor means 2 first endless belt
2a 1st upstream endless belt
3a First upstream endless belt 3 Second endless belt
2b Second downstream endless belt
3b Second downstream endless belt 4 Fish clamping and conveying surfaces 5 and 6 Pressure water injection gap 7 Pressure water injection means
71 Fixed nozzle enclosure
711 slot
72 Pressure water supply pipe
721 pressure water channel
722 Water hole
73 Cylinder
731 Shaft hole
732 Large diameter part
733 Channel Hole
74 Pressure water injection nozzle 8 Scale A Fish body W Pressure water

Claims (3)

Conveyor means including a first endless belt and a second endless belt, the facing surfaces of which are formed on the fish clamping and conveying surface;
A fish scale removing device comprising: pressure water jetting means for jetting high-pressure water onto the surface of a fish transported on the transport path in the transport path of the fish to remove scales from the fish. in
While the scales arranged in parallel in the width direction of the fish are conveyed by a distance corresponding to the length of the scales, the pressure water injection means moves the scale rows in the width direction of the fish at high speed several times. 1. A fish scale removing device, comprising: a pressure water jet nozzle for removing fish scales. The first endless belt includes a first upstream endless belt and a first downstream endless belt, and pressure is applied between the first upstream endless belt and the first downstream endless belt in the fish transport path. There is a gap for water injection,
The pressure water injection means is configured to inject high-pressure water toward the surface of the fish body passing through the pressure water injection gap toward the pressure water injection gap. 2. The fish scale removing device according to 1. The pressure water injection means is
A cylindrical fixed nozzle outer casing with a part of the outer peripheral surface facing the transport path side of the fish body;
a long hole opening toward the fish body in a part of the outer peripheral surface of the fixed nozzle outer casing;
a pressurized water receiving cylinder rotatably disposed in the fixed nozzle housing and connected to a pressurized water supply pipe;
Communicated with and supported by the pressurized water receiving cylindrical body, with the tip thereof facing the long hole, and by the jet reaction force of the pressurized water ejected from the tip, it rotates at high speed together with the pressurized water receiving cylinder within the fixed nozzle outer casing. 3. The apparatus for removing scales from a fish according to claim 1 or 2, further comprising a pressure water jet nozzle.

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