JP3027520B2 - Fish thawing and removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a fish thawing and extracting apparatus for storing frozen fish such as mackerel and sardines, thawing the fish in a thawing tank, and extracting the thawed fish from the thawing tank.

[0002]

2. Description of the Related Art Conventionally, as a fish thawing / extracting device for accommodating a frozen fish and thawing it and extracting the fish after thawing, as shown in FIG. An upper U-shaped net basket 33 with a fully open upper end in the thawing tank 31 in which the installed fumarolic pipe 32 is disposed
The fish basket is housed in the net basket 33, and the frozen fish are accommodated in the net basket 33 and thawed in the thaw tank 31. After the thaw, the net basket 33 is raised above the thaw tank 31 by an appropriate lifting device (not shown). There is known a device configured to take out a thawed fish body from the upper end of the opening of the net basket 33 after being lifted to the front side and then tilted forward.

[0003]

However, according to the above-mentioned conventional apparatus, the frozen fish in the net basket 33 do not move at all during the thawing, so that the bottom fish in the thawing tank 31 and the upper fish are not moved. There is a difference in the thawing speed between the fish and the fish, and the thawing state becomes uneven throughout, and it takes time not only to thaw the fish inside the net basket or in the upper part, but also for those fish with a slow thawing speed. When thawed, there is a problem in that the fish on the bottom side is excessively melted and deteriorates or rots easily, thereby lowering the commercial value.

[0004] The present invention has been made in view of such a problem, and at the time of thawing, all fish bodies are uniformly thawed by changing the position of the fish bodies in the net basket in the thawing tank. It is an object of the present invention to provide an apparatus for thawing and removing fish from which fish can be taken out smoothly.

[0005]

In order to achieve the above object, a fish thawing / extracting apparatus according to the present invention comprises: a thawing tank provided with a bubble generating means having a large number of upward blowing holes at an inner bottom; A pair of pivot arms pivotally attached to the front and rear ends at the upper end of the opening so as to be pivotable in the vertical direction, and rotatably support a shaft protruding from the center of the front and rear end faces between the ends of these pivot arms. The frozen fish body-equipped basket with a door disposed in the thawing tank, a rotation drive mechanism for rotating the storage basket, and a rotation drive mechanism for the rotation arm.

In the above fish thawing / extracting device, the storage basket has a reinforcing frame fixed to several places on the outer peripheral surface of a cylindrical mesh body whose front and rear end faces are closed. Is provided integrally with a flat bottom member, and an entrance / exit for fish is provided at an arc portion of the cylindrical mesh body from one side edge of the bottom member toward the upper side of the bottom member, and the entrance / exit is provided at the entrance. Is configured to be freely openable and closable.

[0007] Further, as a rotary drive mechanism of the storage basket, for example, as described in claim 3, the deceleration is performed on one of the fixed frames projecting upward from the front and rear ends of the thawing tank. Endless between a sprocket wheel fixed to a rotary drive shaft of the motor with a reduction gear and one of the front and rear sprocket wheels rotatably supported at the rotation center of the rotary arm. The structure is such that an endless chain is bridged between the other sprocket wheel and a sprocket wheel fixed to the center shaft of the storage basket.

The rotation drive mechanism of the rotation arm may be, for example, a motor with a speed reducer fixed on the other fixed frame, and a rotation shaft of the motor with the speed reducer. The chain is wound around a sprocket wheel fixed to the car and the tip of the chain is connected to the central shaft of the storage basket.

[0009]

The door of the storage basket is opened, a large amount of frozen fish is put into the storage basket, and after the door is closed, the water in the defrosting tank is discharged from the bubble generating means disposed at the inner bottom of the defrosting tank. When the bubbles are sent out, the fish waves vibrate due to a shock wave when the bubbles collide with the fish immersed in the water and disappear, and the thawing is promoted. At this time, when the storage basket is rotated in the thawing tank, the fish rolls so as to be agitated in the storage basket, and all the fish uniformly come into contact with water and bubbles to undergo the thawing action.

[0010] In order to take out the thawed fish from the storage basket after the thawing process is completed, the rotation arm supporting the center shaft of the storage basket so as to be rotatable is rotated upward, and the storage basket is thawed. Since it is lifted to one side from the tank, the door of the storage basket is opened and the thawed fish is taken out. At this time, since the bottom member having a flat upper surface communicating with the fish body entrance is provided in the storage basket, the bottom member is inclined downward toward the entrance when the storage basket is pulled up from the thawing tank. Sliding on the material allows the thawed fish to be discharged smoothly into the box that is waiting at one side of the thaw tank from the entrance of the fish in the storage basket.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Reference numeral 1 denotes a defrosting tank having a rectangular shape whose plan shape is long in the front-rear direction. The center of the bottom wall is formed on a horizontal bottom wall 1a, and both bottom walls are both side edges of the horizontal bottom wall 1a. Are formed on the inclined bottom walls 1b, 1b inclined obliquely upward from above, and side walls 1c, 1c vertically provided integrally from the upper ends of these both-side inclined bottom walls 1b, 1b, and further, The front and rear wall plates 1d, 1d are fixed to the front and rear ends in a watertight manner and formed in a water tank having an upper end entirely open.

Numeral 2 denotes a bubble generating means comprising a plurality of fumaroles 2a laid on the inner bottom surface of the thawing tank 1, and as shown in FIG. The above-mentioned fumarolic tube 2a is arranged in parallel on the upper surface of the horizontal bottom wall 1a and the inclined bottom walls 1b, 1b on both sides, and is arranged from a compressor (not shown) installed at an appropriate place outside the tank. Compressed air is supplied to these fumaroles 2a so that bubbles are blown out from fumaroles 2b into the water filled in the thawing tank 1.

Reference numeral 3 denotes a fish storage basket removably disposed in the thawing tank 1, and is provided at several places on the outer peripheral surface of a cylindrical wire netting mesh 3a whose front and rear opening ends are completely closed by a circular closing plate 3c. A ring-shaped metal reinforcing frame 3b is fixed, and a mesh portion between adjacent reinforcing frames 3b, 3b is cut out in a rectangular shape with a predetermined width and a predetermined arc length in the circumferential direction. As shown in FIG. 4, a plurality of fish entrances 3d arranged in the longitudinal direction of the storage basket 3 are formed, and a rectangular wire mesh curved in a circumferentially convex arc shape at one circumferential edge of each entrance 3d. And one side edge of the door body 4 is pivotally connected 4a and the other side edge of the door body 4 is removably locked to the other side edge of the entrance 3d by a suitable locking means (not shown). Thereby, each doorway 3d is closed by the door body 4 so that it can be opened and closed freely.

A flat bottom member 5 made of wire mesh is stretched over the inner bottom of the storage basket 3 over the entire length, and one side edge of the bottom member 5 is connected to the other side edge of the entrance 3d. That is, it is located in a communicating state on the lower end side, and is formed so that the thawed fish body can be easily discharged from the storage basket 3 as described later. Further, short shafts 6, 6 protrude from the center of the circular front and rear closing plate 3c of the storage basket 3, and these shafts 6, 6 are rotatably supported by the distal ends of the rotating arms 7, 7. Let me.

The thawing tank 1 has supporting legs on both sides of the outer bottom.
Fixed frames 8 and 8a of a fixed height supported by 10 and on the upper surfaces of the front and rear wall plates 1d and 1d are provided upright. An arm mounting shaft 9 is rotatably supported on one side of the open end, and the rotating arms 7, 7 are provided at both ends of the arm mounting shaft 9.
The pivoting arms 7, 7 are projected into the thawing tub 1 along the inner surfaces of the front and rear wall plates 1d, 1d of the thawing tub 1, and the tip end of the storage basket as described above. The two central shaft members 6, 3 are rotatably supported.

Further, between the upper ends of the fixed frames 8 and 8a, the rotary drive shaft 11 of the storage cage 3 and the rotary drive shaft 12 of the rotary arms 7, 7 are rotatably supported. The rotation drive shaft 11 of the car 3 accommodates the motor 13 with a speed reducer installed at the upper end of
And a motor 14 with a speed reducer installed at the upper end of the other fixed frame 8a is connected to the rotary drive shaft 12 of the rotary arm. The rotation drive mechanism for transmitting the rotation force from the motors with reduction gears 13 and 14 to the storage basket 3 via the rotation drive shafts 11 and 12 and the rotation drive mechanism for the rotation arm 7 are configured respectively. I have.

The rotation driving mechanism of the storage basket 3 includes sprocket wheels 15, 15 fixed to both ends of the rotation driving shaft 11.
And an endless chain 18 between one of the front and rear double sprocket wheels 16 and 17 rotatably fitted to the arm mounting shaft 9 at the base ends of the rotating arms 7 and 7. And an endless chain 20 between the other sprocket wheel 17 and the sprocket wheel 19 fixed to the center shaft body 6 of the storage basket 3.
To transmit the rotation of the motor with reduction gear 13 to the storage basket 3.

On the other hand, the rotary drive mechanism of the rotary arm 7 has a sprocket wheel on both ends of the other rotary drive shaft 12.
21 and 21 are fixed, and a chain with an end is attached to the sprocket wheels 21 and 21, and the end of the chain with the end is connected to a projecting piece 23 protruding from the central shaft body 6 of the storage cage 3. At the same time, the other end side is inserted into a guide tube 24 disposed along the other side of the fixed frames 8 and 8a, and the chain 22 is pulled up or pulled back by the forward / reverse rotation of the motor 14 with the speed reducer. , 7 are rotated up and down about the mounting shaft 9 so that the storage basket 3 is put in and out of the thawing tank 1. Reference numeral 25 denotes an overflow hole formed at an appropriate position at the upper end of the thawing tank 1, and reference numeral 26 denotes a drain hole provided at the lower end of the thawing tank 1.

The operation of the apparatus for thawing and extracting fish in the embodiment constructed as described above will be described. In the state where the storage basket 3 is stored in the thawing tank 1 filled with water,
The storage basket 3 has an upper peripheral portion having a door body 4 protruding upward from the water surface. The door body 4 is opened, and a frozen fish body (not shown) is put into the storage basket 3 through the entrance 3d and stored therein. After that, the door body 4 is closed. Thereafter, when the motor 13 with the reduction gear of the storage basket rotation drive mechanism is driven, the rotation drive shaft
11 rotates, the rotation is the chain 18 spanned between the sprocket wheels 15 and 16, and the sprocket wheel 1
It is transmitted to the central shafts 6 and 6 of the storage basket 3 via a chain 20 extending between 7 and 19, and the storage basket 3 rotates at a constant rotation speed (1 rotation / minute).

On the other hand, when compressed air is supplied from the outside to the fuze tube 2a constituting the bubble generating means provided at the inner bottom of the thawing tank 1 by a compressor, a large number of upward fumar Air blows out from the hole 2b into the water in the thawing tank 1, rises as bubbles, and collides with the fish in the storage cage 3 through the mesh of the storage cage 3, and then disappears. At this time, ultrasonic waves (shock waves) are generated due to the collapse of the bubbles to vibrate the frozen fish and agitate the water to accelerate the thawing speed of the fish.

Further, since the storage basket 3 is rotated as described above, a large number of fish bodies in the storage basket 3 are rolled into a stirring state in the storage basket 3 to change their positions, and all the fish bodies are changed. Water and air bubbles are almost uniformly contacted to eliminate uneven thawing and enable rapid thawing.

When the fish thawing process is completed for a certain period of time, the generation of air bubbles is stopped and the rotation of the storage basket 3 is stopped with the door 4 thereof facing upward. Thereafter, when the motor 14 with a reduction gear for driving a rotary arm is driven, the motor 14 rotates the rotary drive shaft 12, and the sprocket wheels 21, 21 fixed to both ends of the drive shaft 12.
Arm 7, 7 via a chain 22 extending to
Is rotated upward about the mounting shaft 9, and the storage basket 3 supported by the tips of the rotating arms 7, 7 is pulled upward from the inside of the thawing tank 1.

At this time, the storage basket 3 is lifted toward one side of the thawing tank 1 so as to rotate around the mounting shaft 9 which is the center of rotation of the rotating arms 7, 7. Changes from the upward state to the one side of the thawing tank 1 and the bottom member 5 in the storage basket 3 is inclined obliquely downward toward the entrance 3d closed by the door body 4. When the door 4 is opened in this state, the thawed fish in the storage basket 3 slides on the inclined bottom member 5 to enter and exit the door.
It is dropped from 3d to one side of the thawing tank 1 and is accommodated in a box (not shown) waiting below. When the inclination of the bottom member 5 is small and the automatic removal of the fish from the storage basket 3 cannot be completely performed, the remaining fish may be manually scraped off, or the storage basket 3 may be removed via the rotating arm 7. May be further raised to increase the degree of inclination of the bottom member 5 to eliminate fish.

In the above embodiment, the storage basket 3
Although a sprocket wheel and a chain are used as the rotation drive mechanism, other means such as a meshing gear mechanism may be employed. Also, in the bubble generating means,
Although the fumarolic tube 2a having the fumarole is arranged at the inner bottom of the thawing tank 1, a structure in which a hollow plate body having a number of upward fumaroles is laid on the inner bottom of the thawing tank 1 is adopted. May be. In addition, the entrance to the fish basket 3
The 3d door body 4 employs an opening / closing means by a pivotal connection 4a. As shown in FIG. 5, the guide groove of the door body 4 or the guide A rail 4b is provided so that the door 4 can be freely opened and closed in the circumferential direction along the inner peripheral surface of the storage basket 3 while engaging both end edges of the door 4 with the guide groove or the guide rail 4b. It may be configured.

[0025]

As described above, according to the fish thawing / extracting apparatus of the present invention, a thawing tank provided with a bubble generating means having a large number of upward blowing holes at the inner bottom, and front and rear ends at the upper end of the opening of the thawing tank A pair of rotating arms pivotally attached to the upper and lower directions, and a shaft protruding from the center of both front and rear end faces between the ends of these rotating arms are rotatably supported inside the thawing tank. , And a rotation drive mechanism for rotating the storage basket, and a rotation drive mechanism for the rotation arm. The storage basket supported between the ends of these rotating arms can be easily and accurately immersed and pulled into the thawing tank by rotating the storage basket, and the storage basket can be rotated in the thawing tank. Rotated by the drive mechanism Therefore, a large number of frozen fish bodies in the storage basket can be rolled into a stirring state in the storage basket and their positions can be changed uniformly in up, down, left, right and inward and outward directions. Uniform contact with water and air bubbles can eliminate thawing unevenness, as well as efficient thawing, shortening the thawing process time, and high commercial value due to uniform thawing It can provide a thawed fish body.

Further, after the thawing process, by rotating the pair of pivot arms upward, the storage basket whose center shaft body is supported between the distal ends of these pivot arms is rotated. It can be lifted around the center and pulled up smoothly from the top of the thawing tank to one side, making it easy to put the thawed fish into the box waiting on one side of the thawing tank. It is. At this time, by providing a flat bottom member that communicates with the fish entrance provided in the storage basket at the inner bottom of the storage basket, the storage basket is pulled up in a swiveling state around the base end of the rotating arm, and the fish entrance is opened. When the bottom is opened to one side of the thawing tank, the bottom member is inclined downward toward the entrance and the thawed fish can be discharged while sliding on the inclined bottom member. Work can be done smoothly.

[0027] As a rotation drive mechanism of the storage car, a sprocket wheel rotatably provided at both ends of a rotary arm from a motor with a reduction gear, and a center shaft of the storage car via a chain extending between the sprocket wheels. The configuration in which the rotational force is transmitted to the body enables the storage basket to be always driven to rotate irrespective of the insertion and withdrawal operations of the storage basket in the thawing tank. Since the rotating arm is supported vertically between the ends of the moving arm and vertically rotated by driving a motor, the insertion and withdrawal operations of the storage basket into and from the thawing tank can be easily performed.

[Brief description of the drawings]

FIG. 1 is a simplified front view of the device of the present invention,

FIG. 2 is a side view thereof,

FIG. 3 is a plan view thereof,

FIG. 4 is a longitudinal sectional front view showing an operation state of a storage basket with respect to a thawing tank;

FIG. 5 is a simplified vertical sectional front view showing another opening / closing means of the door body;

FIG. 6 is a simplified vertical sectional front view showing a conventional example.

[Description of Signs] 1 Defrosting tank 2 Bubble generating means 3 Storage basket 3d Fish entrance 4 Door 5 Bottom member 6 Center shaft 7 Rotating arm 13 Motor with reduction gear for driving rotation of storage basket 14 Reduction gear for raising storage basket Motor with

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A23B 4/07

Claims (4)

(57) [Claims] 1. A thawing tank provided with a bubble generating means having a large number of upward blowing holes at an inner bottom thereof, and a pair of pivots which are pivotally attached to the front and rear ends at the upper end of an opening of the thawing tank so as to be vertically rotatable. Arm, a frozen fish body basket with a door body rotatably supported by a shaft protruding from the center of the front and rear end faces between the distal ends of these rotating arms and disposed in the defrosting tank,
A fish thawing and extracting apparatus comprising: a rotation drive mechanism for rotating the storage basket; and a rotation drive mechanism for the rotation arm. 2. The storage basket has a reinforcing frame fixed to several places on the outer peripheral surface of a cylindrical mesh body whose front and rear end faces are closed,
A bottom member having a flat upper surface is integrally provided therein, and an entrance / exit for the fish body is provided at an arc portion extending from one side edge of the bottom member to an upper side of the bottom member in the cylindrical mesh body,
2. The fish thawing and extracting apparatus according to claim 1, wherein the door is openably and closably attached to the entrance. 3. A rotation drive mechanism for the storage basket, wherein a motor with a speed reducer is installed on one of the two fixed frames projecting upward from the front and rear ends of the thawing tank, and the motor with a speed reducer is provided. Endless chain between the sprocket wheel fixed to the rotary drive shaft and one of the front and rear sprocket wheels rotatably supported at the center of rotation of the rotary arm, and further with the other sprocket wheel. The fish body thawing and extracting device according to claim 1, wherein an endless chain is stretched between sprocket wheels fixed to a central shaft body of the storage basket. 4. A rotating drive mechanism for a rotating arm, wherein a motor with a speed reducer is fixed on the other fixed frame, and a chain is wound around a sprocket wheel fixed to a rotating shaft of the motor with a speed reducer. 4. The fish thawing and extracting device according to claim 1, wherein a tip of the chain is connected to a central shaft of the storage basket.