JPH0622478B2 - Method and device for removing contaminants from fish eggs - Google Patents

Description

TECHNICAL FIELD The present application relates to a method for removing contaminants from fish eggs and a device for removing the same.

[Prior Art] Conventionally, this kind of thing is as follows.

Removal by manual selection.

Selective removal of sieves such as rotary sieves (water washing method in rotary drum with mesh holes).

Rotate the stirring blade in the water tank to stir and wash (exposure tank).

[Problems to be Solved by the Invention] The conventional techniques described above have the following problems.

Fish eggs (shishamo eggs, kazunoko, etc.) in the state of roses,
When used as a raw material or a product (for example, sushi material, molded kazunoko, etc.), it is necessary to remove carcasses, small bones, scales, etc. of parasites (anisakis, etc.) as contaminants as much as possible. In particular, the inclusion of carcasses of parasites significantly reduces the commercial value of the carcass and is easily subject to complaints.

In order to remove this parasite (Anisakis, etc.), the removal is done manually by visual inspection, but the diameter is about 1 to 1.3.
The work of separating and removing thinner parasites (Anisakis, etc.) from eggs with a size of about φ mm is not only labor-intensive, but also has poor sorting efficiency and is a very inefficient process.

We tried to wash and remove the water using the conventional method of washing water in the rotary drum with a mesh hole, but the product recovery rate and parasite removal efficiency were unsatisfactory, and it could not be put to practical use.

The present application has been made in view of such problems of the conventional technology, and an object of the present application is to provide the following things.

1. Labor saving (reduction of personnel).

2. Separation and removal efficiency improvement (especially improvement of parasite (anisakis etc.) carcass removal efficiency).

3. Improvement of quality.

[Means for Solving the Problems] In order to achieve the above object, the present invention is as follows.

That is, the first invention is a method for removing contaminants from fish eggs, which comprises the following first to third steps.

First step: Fish eggs and water desired to be treated are stored in a raw material tank 2 having a predetermined capacity and stirred by a stirring blade.

Second step Treat with the concentration adjustment tank 4.

Third step Treat with cyclone 4E.

The foreign matter removing device for fish eggs of the second invention is configured as follows.

The raw material tank 2 having a predetermined capacity has a stirring motor 2
A stirring blade rotating at A is provided, and a pressure-feeding pump 3A is interposed in the middle of a pressure-feeding pipe 3 that pressure-feeds fish roe, which is a raw material from a raw material tank, together with water. An appropriate number of concentration adjusting tanks 4 provided with an adjusting valve 3B for use and connected to the tip of the pressure feeding pipe rotate in the vicinity of the bottom portion of the tank portion 4A of a predetermined capacity and the tank portion 4A of which the upper surface is open. A stirring blade 4B, an overflow port 4C opened above one side wall, a suction pipe 4D connected to the center of the bottom of the tank portion 4A, and a pump 4D1 and a water amount adjusting valve 4D2 in the middle of the suction pipe 4D.
And a cyclone 4E connected to the tip of the cyclone 4E and having a valve 4E11.
Is configured to open to the finished product storage tank 5, while the overflow port 4C is connected to the over water recovery grate 6 via the pipe 4C2, and the over water recovery grate 6 is connected via the switching grate 6A. The over water treatment tank 7 is connected to the over water treatment tank 7. The over water treatment tank 7 has a tank portion 7A having a predetermined capacity with an open upper surface and a strainer with an open upper surface that is detachably attached along the front side wall. The cyclone 4E includes a portion 7B, an overflow port 7C opened above the front side wall, an overflow grate 7D attached below the overflow port, and a return pipe 7E connected to the bottom of the tank portion 7A. Foreign matter discharge port 4E provided above in
A foreign matter collecting grate 8 is connected to 2 and this foreign matter collecting grate 8
Is connected to a foreign matter treatment tank 9 via a switching valve 8A. The foreign matter treatment tank 9 has a tank portion 9A of a predetermined capacity whose upper surface is open, and an upper surface detachably attached along the front side wall. Strainer part 9B with an opening
And overflow port 9C opened above the front side wall
A return pipe 9E connected to the bottom of the tank 9A, and the tip of the return pipe 7E and the tip of the return pipe 9E are of a predetermined capacity separately provided. Is connected and connected at a position above the replenishment tank 10, a water supply pipe 10B having a constant water level valve 10A is connected above the replenishment tank, and a water supply pipe 10C connected near the bottom surface of the replenishment tank is adjusted in concentration. The tank 4 is configured to open to the upper surface opening.

[Operation] 1. The function of the raw material supply adjusting valve 3B of the pressure feed pump 3A is to adjust the egg supply amount in order to adjust the concentration of fish eggs in the concentration adjusting tank 4 with respect to water in the second step,
Create conditions to optimize the concentration.

2. The action of the water amount adjustment valve 4D2 in the middle of the suction pipe 4D creates conditions for optimizing the cyclone separation efficiency by adjusting the inlet water amount of the cyclone 4E.

3. The function of the valve 4E11 provided at the discharge port 4E1 for the treated fish eggs of the cyclone 4E is to adjust the discharge amount of the cyclone 4E to create conditions for optimizing the cyclone separation efficiency.

4. The operation of the switching valve 8A of the foreign matter collecting grate 8 is to remove foreign matter from the strainer during cleaning of the strainer during operation of the device.
It stops the flow of foreign matter into the strainer.

Embodiments of the Invention Embodiments will be described with reference to the drawings.

The method for removing contaminants from fish eggs as the first invention is as follows.

First step Fish eggs and water desired to be treated are stored in a raw material tank 2 having a predetermined capacity, and stirred by a stirring blade.

In this case, the mixing ratio (weight) of fish roe and water is set to about 1: 1 to facilitate pumping.

It should be noted that, if pumping is possible, there is no particular need for this mixing ratio.

Second step Processing is performed in the concentration adjustment tank 4.

In this step, the concentration of fish eggs in water is adjusted.

That is, the mixing ratio (weight) of fish eggs and water is about 1:10.
This is because by diluting 1:50, the following third step can be performed more efficiently, the egg recovery rate can be increased, and optimal conditions can be increased to increase the separation efficiency.

Third step Treat with cyclone 4E.

In this third step, the roe and the contaminants having different specific gravities are separated in water by the centrifugal force and shearing force inside the cyclone.

1 is a device for removing contaminants from fish eggs, which is suitable for specifically realizing the first invention.

Reference numeral 2 denotes a raw material tank having a predetermined capacity, which is a stirring motor 2
A stirring blade (not shown) that rotates at A is provided.

The mixing ratio (weight) of fish eggs and water, which is desired to be stored in the raw material tank, is about 1: 1.

Reference numeral 3 denotes a pressure-feeding pipe for pressure-feeding fish roe, which is a raw material from the raw material tank, together with water. A pressure-feeding pump 3A is interposed in the middle of the pressure-feeding pipe 3 and a raw material supply adjusting valve 3B is provided at the tip.

Reference numeral 4 is an appropriate number of concentration adjusting tanks connected to the tip of the pressure-feeding pipe (in the illustrated case, three are arranged in parallel, but it is natural that the number can be appropriately increased or decreased in design). .

Therefore, the concentration adjusting tank 4 has a tank portion 4A of a predetermined capacity having an open upper surface, a stirring blade 4B rotating near the bottom of the tank portion 4A, and an overflow port 4C opened above one side wall. It is composed of a suction pipe 4D connected to the center of the bottom of the tank portion 4A, a pump 4D1 and a water amount adjusting valve 4D2 in the middle of the suction pipe 4D, and a cyclone 4E connected to the tip thereof. There is.

In this concentration adjusting tank 4, the concentration of fish eggs in water is adjusted.

That is, the mixing ratio (weight) of fish eggs and water is about 1:10.
It will be diluted 1:50.

The cyclone 4E is known.

In the figure, 4B1 is a stirring motor, and 4C1 is a net stretched over the overflow port 4C.

As described above, the concentration adjusting tank 4 is configured such that the tank portion 4A and the cyclone 4E are paired.

Therefore, 4E1 is a cyclone 4 having a valve 4E11.
The outlet of the processed fish eggs at the lower end of E is the outlet of the cyclone 4E located at the leftmost side in the triple outlet configuration as shown in the figure. 4 is configured to open on the upper surface of the cyclone 4E, and after this state, the discharge port 4 of the cyclone 4E located at the final position
E1 is configured to open to the finished product storage tank 5.

On the other hand, the overflow port 4C is connected to the over water recovery grate 6 via the pipe 4C2, and the over water recovery grate 6 is connected to the over water treatment tank 7 via the switching grate 6A.
Are linked to.

Therefore, the overwater treatment tank 7 has a tank portion 7A having a predetermined capacity with an open upper surface, a strainer portion 7B with an open upper surface that is detachably attached along the front side wall, and a front side wall. It is composed of an overflow port 7C opened above, an overflow grate 7D attached below the overflow port, and a return pipe 7E connected to the bottom of the tank 7A.

A well-known water level detector (not shown) that detects the water level when the liquid level rises and automatically operates the pump 7E1 is attached to the tank 7.

The strainer portion 7B includes a strainer frame 7B1 formed in a square tubular shape with a lattice, a filtering cloth bag 7B2 configured to be detachable from the strainer frame, a cloth bag holder 7B3 for pressing the cloth bag against the strainer frame, It comprises a catch metal fitting 7B4 for supporting the strainer frame on the tank portion 7A.

Further, a foreign matter collecting pad 8 is connected to the foreign matter discharge port 4E2 provided above the cyclone 4E, and the foreign material collecting pad 8 is connected to a foreign material processing tank 9 via a switching valve 8A.

Therefore, the foreign matter treatment tank 9 has a tank portion 9A having a predetermined capacity whose upper surface is open, and a strainer portion 9B which is detachably mounted along the front side wall and whose upper surface is open.
And overflow port 9C opened above the front side wall
And an overflow pad 9D attached below the overflow port, and a return pipe 9E connected to the bottom of the tank 9A.

The tank 9 is equipped with a water level detector that detects the water level when the liquid level rises and automatically operates the pump 9E1.

The strainer portion 9B includes a strainer frame 9B1 formed in a square tubular shape with a lattice, a filtering cloth bag 9B2 configured to be detachable from the strainer frame, a cloth bag holder 9B3 for pressing the cloth bag against the strainer frame, It is composed of a catch fitting 9B4 for supporting the strainer frame on the tank portion 9A.

The tip ends of the return pipe 7E and the return pipe 9E are connected to communicate with each other at a position above a separately arranged replenishment tank 10 having a predetermined capacity.

A water supply pipe 10B having a constant water level valve 10A is connected to the upper side of the replenishment tank, and a water supply pipe 10C connected to the vicinity of the bottom surface of the replenishment tank opens to an upper opening of the concentration adjusting tank 4. Is configured.

In the figure, 10C1 is a pump and B is a valve.

Although illustration is omitted, a publicly known operation panel for manually or automatically operating each pump, agitator and the like is provided.

[Effects of the Invention] Since the present invention is configured as described above, it has the effects described below.

1. Personnel reduction 7-8 workers required for removal were introduced with this device,
One or two operators may be the equipment operators.

2. Improvement of removal efficiency Comparing the number of remaining insects, when removed by this device,
It is less than 1/10 of the manual selection, improving efficiency. By increasing the number of cyclones, it is possible to further increase the removal efficiency.

3. Improvement of quality Due to the cleaning effect inside the cyclone, the surface of the egg is cleaned and the surface becomes shiny and clean.

Not only impurities but also eggs with a low specific gravity such as broken eggs and immature eggs are separated and removed, so that eggs with a uniform particle size and quality can be collected, leading to improvement in quality.

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire structure, FIG. 2 is a perspective view showing a concentration adjustment tank and a cyclone with a part thereof cut away, and FIG. 3 is a perspective view showing a part of the cyclone cut out, and FIG. Fig. 5 is a schematic perspective view for explaining the operation of the above, Fig. 5 is a perspective view in which a part of the processing tank is cut away, and Fig. 6 is an exploded perspective view of the strainer portion. 1 ... Device for removing contaminants from fish eggs, 2 ... Raw material tank, 3 ... Pumping pipe, 4 ... Concentration adjustment tank 5 ... Finished product storage tank, 6 ... Over water recovery, 7 ... Over Water treatment tank, 8 ... foreign matter collection tank, 9 ... foreign matter treatment tank, 10 ... replenishment tank.

Claims (2)

[Claims] 1. A method for removing contaminants from fish eggs, which comprises the following first to third steps. First step: Fish eggs and water desired to be treated are stored in a raw material tank 2 having a predetermined capacity and stirred by a stirring blade. Second step Treat with the concentration adjustment tank 4. Third step Treat with cyclone 4E. 2. The raw material tank 2 having a predetermined capacity,
A stirring blade that rotates with a stirring motor 2A is provided, and a pressure-feeding pump 3A is interposed in the middle of a pressure-feeding pipe 3 that pressure-feeds raw fish roe from a raw material tank together with water. A raw material supply adjusting valve 3B is provided,
An appropriate number of concentration adjusting tanks 4 connected to the tip of the pressure-feeding pipe include a tank portion 4A having a predetermined capacity with an open upper surface,
The stirring blade 4B rotating near the bottom of the tank 4A
And an overflow port 4C opened above one side wall,
Suction pipe 4D connected to the center of the bottom of the tank 4A
A pump 4D1 and a water amount adjusting valve 4D2 are provided in the middle of the suction pipe 4D, and a cyclone 4E connected to the tip of the pump 4D1 is provided.
The treated fish egg discharge port 4E1 at the lower end of the cyclone 4E having 11 is configured to open to the finished product storage tank 5, while the overflow port 4C is connected to the over water recovery pipe 6 via the pipe 4C2. The over water recovery grate 6 is connected to the over water treatment tank 7 via the switching grate 6A, and the over water treatment tank 7 has a tank portion 7A of a predetermined capacity whose upper surface is open.
And a strainer portion 7B which is detachably attached along the front side wall and has an open upper surface, an overflow port 7C opened above the front side wall, and an overflow grate 7D attached below the overflow port, The return pipe 7E is connected to the bottom of the tank portion 7A, and the foreign matter collecting port 8 is connected to the foreign matter discharge port 4E2 provided above the cyclone 4E. The foreign matter treatment tank 9 is connected via a switching valve 8A. The foreign matter treatment tank 9 has a tank portion 9A of a predetermined capacity whose upper surface is open, and an upper surface which is detachably attached along the front side wall is open. The strainer portion 9B that is operating, the overflow port 9C that is opened above the front side wall, and the overflow that is attached below this overflow port. And 9D, is composed of a return pipe 9E connected to the bottom of the tank portion 9A, the return pipe 7
E and the tip of the return pipe 9E are connected and connected at a position above a separately arranged replenishment tank 10 of a predetermined capacity, and a water supply pipe 10B having a constant water level valve 10A is connected above the replenishment tank, and A water supply pipe 10C connected to the vicinity of the bottom surface of the replenishment tank is configured to open to an upper surface opening portion of the concentration adjustment tank 4, the foreign matter removing device for fish eggs.