JPH0563142B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a continuous boiling device for small fish, and particularly has a bottom shape that slopes downward toward a position below the axis of a screw conveyor. A continuous boiling device for small fish, in which a plurality of heat radiation pipes are placed in a boiling tank at a predetermined distance from the bottom of the boiling tank at a position other than the lower part of the axis of the screw conveyor (an area where heat radiation pipes are not placed); The present invention relates to a continuous boiling device for small fish, which is provided with a partial heating section composed of another heat radiation pipe at a predetermined position.

[Prior art]

Conventionally, as in the continuous boiling apparatus for small fish described in Japanese Utility Model Application Publication No. 160884/1984, a large number of pipes are installed in the boiling tank in the same direction as the screw conveyor, and at the bottom of the flow path formed by the pipes themselves. BACKGROUND ART A continuous boiling device is known that is arranged so that the cross section is semicircular and that live steam is ejected from a through hole in a pipe to boil small fish while stirring them.

Furthermore, as in the automatic small fish processing device described in Japanese Utility Model Application Publication No. 1291/1980, a boiling device has been proposed in which heat dissipation pipes through which heated steam can pass are arranged at both corners of a boiling tank having a screw conveyor. There is.

Furthermore, as in the automatic small fish processing device described in Japanese Utility Model Publication No. 61-3347, the bottom section of the boiling tank equipped with a screw conveyor is formed in a semicircular shape, and a heating device is provided below outside the boiling tank. A continuous boiling device has been proposed in which small fish in a boiling tank are boiled using a boiler.

Furthermore, a continuous boiling device has conventionally been used in which a mesh belt for taking out boiled small fish is arranged at an angle, and one end of the mesh belt is immersed in a boiling tank. For example, this is the boiling device described in each of the above-mentioned publications.

[Problems with conventional technology]

However, with the boiling device described in the above-mentioned Japanese Utility Model Publication No. 62-160884, it is difficult to clean the boiling liquid and fish residue accumulated at the bottom of the boiling tank below the pipe forming the bottom of the channel, and the remaining fish after boiling. Because steam is blown into the boiler, small fish are easily damaged by breakage, cuts, etc., and the chemicals put into the boiler, the iron rust, etc. inside the boiler, and their odors blow out along with the live steam, giving the small fish an unpleasant odor. Furthermore, there were other problems, such as live steam blowing out from the holes, which could be mistaken for boiling even at low temperatures.

In addition, the automatic small fish processing apparatus described in the above-mentioned Japanese Utility Model Publication No. 1291/1980 had problems such as small fish remaining after boiling at both corners of the bottom of the boiling tank and easily rotting.

Furthermore, in the automatic small fish processing apparatus described in the above-mentioned Japanese Utility Model Publication No. 61-3347, the liquid in the boiling tank is heated by a heater from outside the tank, so temperature unevenness is likely to occur.
There were problems such as it was difficult to control the liquid temperature to make the liquid temperature uniform or to adjust it to a predetermined temperature gradient.

In addition, in a continuous boiling device in which one end of the mesh belt conveyor is immersed in a boiling tank and the boiled small fish are taken out, the boiled small fish are not spread evenly on the mesh belt. There is a problem that it tends to become uneven, and therefore it becomes difficult to proceed smoothly with the subsequent dehydration and drying steps.

Furthermore, the small fish on the mesh belt are transported to the other end of the mesh belt and sent to the next process, but some of them are carried attached to the mesh belt and deposited in the boil tank below the mesh belt conveyor. The problem was that it was easily corrupted.

The present invention was developed against the background of the above, and the purpose of the present invention is to provide a method that is easy to clean after use, and that raises the entire liquid in the boiling tank to a high temperature without blowing live steam into it. Continuous boiling equipment for small fish that can be used for continuous boiling, continuous boiling equipment that can create a temperature gradient where the liquid temperature near the raw fish input part is particularly high, and small fish that can be placed uniformly on a conveyor equipment for transporting boiled small fish. It is an object of the present invention to provide a continuous boiling device that can be placed in a boiling tank, and a continuous boiling device that can prevent small fishes that have returned from being attached to the transport conveyor device from being deposited in a boiling tank.

[Means for solving problems of conventional technology]

The present invention has been made to achieve such an object, and the present invention is constructed as follows.

A: In a continuous boiling device in which a screw conveyor is placed in a boiling tank and small fish can be boiled while being transferred, heating steam is passed below the screw conveyor to heat the surface of the heat dissipation pipe itself. A plurality of heat dissipation pipes capable of heating the liquid in the boiling tank are arranged on substantially concentric cylindrical surfaces around the axis of the screw conveyor, and are positioned below the axis of the screw conveyor on the substantially concentric cylindrical surface. A heat dissipation pipe non-arrangement area is provided in which no heat dissipation pipe is arranged, and the bottom surface of the boiling tank has an inclined surface that gradually becomes lower toward the lower position of the axis of the screw conveyor, and each of the heat dissipation pipes A continuous boiling device for small fish characterized by being arranged at a certain distance from the sides and bottom of the device.

B. In the continuous boiling apparatus for small fish described in item A above, each of the heat radiation pipes on the substantially concentric cylindrical surface faces the same direction as the screw conveyor, and adjacent heat radiation pipes are arranged in parallel with each other in contact with each other or with a gap between them. At the same time, the heat dissipation pipes were arranged approximately symmetrically with respect to the heat dissipation pipe non-arrangement area below the axis of the screw conveyor, and were collectively connected to the ends of the raw material fish input side of each adjacent heat dissipation pipe. Heated steam is introduced from a steam introduction pipe and discharged from a steam exhaust pipe connected collectively to the other end of the heat radiation pipe, and the bottom surface of the boiling tank has a semicircular cross section, and The distance between the boiling tank and the heat dissipation pipe is a sufficient gap to prevent raw fish from clogging, or a sufficient gap to inject cleaning water to wash away raw fish adhering to the boiling tank during cleaning. A continuous boiling device for small fish, characterized in that a first partial heating section constituted by another heat dissipation pipe is provided near the bottom of a boiling tank upstream of the raw fish input side end of the Yuu conveyor.

C. It has a transfer device that can transfer small fish while boiling them in a boiling tank, and near the exit of the transfer device, one end of a conveyor device that can take out the boiled small fish is arranged inclined in the boiling tank. The continuous boiling device is characterized in that a second partial heating section composed of a heat radiation pipe is provided near the bottom of the boiling tank between the outlet side of the transfer device and one end of the conveyor device. Continuous boiling device for small fish.

D. It has a transfer device that can transfer small fish while boiling them in a boiling tank, and near the exit of the transfer device, one end of a conveyor device that can take out the boiled small fish is arranged inclined in the boiling tank. In the continuous boiling device, a guide plate for guiding small fish extends from one end of the conveyor device toward the bottom of the boil tank, and a heat dissipation pipe is installed below the guide plate and near the bottom of the boil tank. 1. A continuous boiling device for small fish, characterized in that a third partial heating section configured as above is provided.

Here, "a substantially concentric cylindrical surface around the axis of the screw conveyor" includes cases where the axis is slightly shifted or the surface is slightly deformed from the cylindrical surface. ” does not necessarily mean that the position of the heat dissipation pipe is completely symmetrical, but may be slightly different,
This includes cases where the number of pipes is slightly different, and "each heat radiation pipe faces in the same direction as the screw conveyor" does not only mean that each heat radiation pipe is parallel to the axis of the screw conveyor, but also when the heat radiation pipes are slightly slanted. This also includes cases.

[Effect]

A heat dissipation pipe arranged below the screw conveyor on a substantially concentric cylindrical surface around its axis serves to boil water and float small fish into the hot water near the screw conveyor. Furthermore, the gap between the bottom of the boiling tank and the heat radiation pipe and the area where the heat radiation pipe is not placed become part of the convection path during boiling, and also act as an inlet for cleaning water during cleaning. A first
a second partial heating section provided between the conveyor device for conveying boiled small fish and the exit side of the screw conveyor; and a third partial heating section provided below the guide plate at the tip of the conveyor device. Each of the partial heating parts increases the temperature of the water around it, increases convection, and works to disperse small fish.

〔Example〕

Embodiments of the present invention will be described in detail below based on the drawings.

In FIGS. 2 and 3, 8 and 10 are boiling tanks, in which two screw conveyors 12 and 13 are installed in parallel, and are driven and rotated in opposite directions via an electric motor 14 and a transmission mechanism (not shown). It is made to be. A bucket conveyor 16 that supplies small fish into the boil tank 8, a first mesh conveyor 18, and a second mesh conveyor 20 that takes out and conveys the boiled small fish from the boil tank 10.
It is equipped with a third conveyor 22 and the like.

The boiling tanks 8 and 10 have bottom portions 24 and 26 having semicircular cross sections as shown in FIG. They are communicated with each other through a communication port 30.

As shown in FIGS. 1 and 4, the boiling tanks 8 and 10 have a plurality of heat radiation pipes 3 on both sides below the screw conveyors 12 and 13 for passing heated steam.
2, 34, 36, 38 are screw conveyor 1
They are located on cylindrical surfaces that are substantially concentric with the axes of the screw conveyors 12 and 13, and are arranged to be substantially symmetrical, and each adjacent heat dissipation pipe is in contact with each other and is coaxial with the axes of the screw conveyors 12 and 13. oriented in the direction, and each heat dissipation pipe 32, 34,
Spacers 40, 41, 42, 43 are arranged between 36, 38 and the bottoms 24, 26 of the boil tank to provide a predetermined distance (gap) between them and the bottoms 24, 26 of the boil tank. . This gap is said to be small enough for small fish to get bored. Furthermore, heat radiation pipe non-arrangement areas 44 and 46 in which no heat radiation pipes are provided are formed below the respective axes of the screw conveyors 12 and 13 on the substantially concentric cylindrical surfaces. These heat dissipation pipe non-arrangement areas 44 and 46 are large gaps between the heat dissipation pipes 32 and 34 on both sides and between the heat dissipation pipes 36 and 38, and these gaps are used to remove small fish etc. remaining on the heat dissipation pipes with washing water during cleaning. This serves as a passage for water to flow away, and also serves as a passage for convection of hot water during boiling. The gap between the heat dissipation pipe and the bottom of the boiling tank also serves as a passage during convection.

As shown in FIG. 5, the heat dissipation pipe 32 has one end curved into an arc shape and is connected between a steam introduction pipe 48 and a steam discharge pipe 50, each of which has a closed end. Steam sent from port A on the input side passes through a heat radiation pipe 32 and is discharged from port B on the other end side. The heat radiation pipe 34 is also constructed in the same manner as described above, and is communicated from port C to port D via the heat radiation pipe 34, as shown in FIG. In addition, the heat radiation pipes 36, 3
8 is similarly configured, and a heat dissipation pipe 3 is connected from port E.
6 to port F, from port G to heat dissipation pipe 3
8 and communicates with port H.
In this way, from each port to the heat dissipation pipe 3
By passing steam through the boilers 2, 34, 36, and 38, water can be boiled in the boiling tanks 8, 10.

The small fish sent into the boiling tank 8 by the first conveyor 18 are transferred to the screw conveyor 1.
2 to the left in FIG. 4, and the communication port 30
The small fish enters the boiling tank 10 through the screw conveyor 13, is further conveyed to the right, and is sent out toward the exit, during which time the small fish are boiled.

In the boiling tank 10, on the exit side of the screw conveyor 13 as a transfer device, as shown in FIG. A guiding plate 52 extending toward the bottom of the boil tank 10 is provided to guide small fish sent out from the screw conveyor 13 onto the second conveyor 20.

In addition, a second partial heating section 54 having a predetermined extension is provided at the bottom of the boiling tank 10 between the guide plate 52 and the screw conveyor 13, and is made of another heat dissipation pipe. The convection current is increased, and the small fish sent from the screw conveyor 12 can be sufficiently dispersed.

Furthermore, a guide plate 52 is provided in front of the second conveyor 20.
Below the boil tank 10, the second
A third partial heating section 56 configured similarly to the partial heating section 54 is provided to increase the convection of hot water in the vicinity thereof. By this, the second
The small fish on the conveyor 20 will be transferred to the next third conveyor 2.
Screw conveyor 12 is configured so that those that are not sent out onto the screw conveyor 12 and come back to the original place are floated and sent to the screw conveyor 12 side without being deposited on the spot.

In addition, below the second conveyor 20 is a water removal device (not shown) that removes water from boiled small fish.
is provided, and a drying fan (not shown) is provided on the third conveyor 22. Fourth
In the figure, 58 and 60 are the screw conveyors 12.
In FIG. 2, reference numeral 62 is a shower device for washing small fish before boiling.

Further, at one end of the boiling tank, a first partial heating section 64 composed of another heat dissipation pipe is provided near the bottom of the boiling tank upstream of the raw fish input side end of the screw conveyor 12. The convection of the hot water is increased to facilitate transport of small fish, and to assist in heating when the temperature of the hot water in the boiling tank 8 does not reach a predetermined value.

In the above-described embodiment of the apparatus configured as described above, the small fish supplied by the bucket conveyor 16 are sent into the boil tank 8 via the first conveyor 18, and are further transferred into the boil tank 10 by the screw conveyor 12. Here, the screw conveyor 13 sends the small fish toward the second conveyor 20 provided on the exit side, where the boiled small fish are taken out and dehydrated, and then dried on the third conveyor 22. The process is carried out and finished.

Near the exit of the screw conveyor 13, the second partial heating section 54 increases the convection of the hot water, so the small fish are well dispersed and placed uniformly on the second conveyor 20. Therefore, dehydration treatment can be carried out suitably. In particular, when the guide plate 52 is widened at the end as in this embodiment, it is normal for small fish to be placed on the mesh belt unevenly and not evenly. Since the light is diffused inside, this inconvenience is eliminated.

In addition, normally some of the small fish transported by the second conveyor 20 remain attached and return, fall near the lower end of the second conveyor 20, and are deposited there and rot. 3 partial heating section 5
6, convection becomes active, and the small fish are carried to one end of the boiling tank 8 along with the water leaking from the mesh of the second conveyor 20, and are returned to the boiling tanks 8 and 1.
sent into 0. Therefore, small fish are prevented from settling and rotting.

In the above embodiment device, the boiling work is completed,
After removing the small fish, small fish and fish residue remain in the boil tank, but water should be poured from above to remove the small fish remaining in the gaps between each heat radiation pipe and the bottom of the boil tank and on each heat radiation pipe. Accordingly, it can be easily removed through the heat dissipation pipe non-arrangement areas 44, 46 and the gap. In addition, the bottom of the boiling tank is semicircular and the lowest part is at the bottom of the area where no heat dissipation pipes are installed, so the residue of small fish etc. that has been washed away by water will collect in this part. However, these residues can be easily flushed out of the boiling tank by injecting water with a hose or the like between the areas where heat dissipation pipes are not installed. Therefore, cleaning becomes easy and the inconvenience of remaining small fish etc. rotting can be eliminated.

In the above embodiment, the bottom of the boiling tank is round, but instead of this, boiling tanks 70, 72 having shapes as shown in FIGS. 7A and 7B may be used. In short, any boiling tank may be used as long as the bottom has an inclined surface such that the height of the bottom decreases toward the bottom of the area where the heat dissipation pipe is not disposed.

Furthermore, although the heat dissipation pipes 32, 34, 36, and 38 are arranged in the same direction as the screw conveyor, they can also be provided in a spiral shape or in the circumferential direction on the outer periphery of the screw conveyor. The number of heat dissipation pipes is increased or decreased depending on the amount of heat dissipation, but if the number increases, it is also possible to position them above the axis of the screw conveyor. Further, the heat dissipation pipes are not necessarily brought into close contact with each other, but it is also possible to provide an appropriate gap.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment in any way, and it goes without saying that it can be implemented in various forms without departing from the gist of the present invention. .

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

According to the continuous boiling apparatus for small fish according to claim 1, the heat dissipation pipe is arranged on a substantially concentric cylindrical surface around the axis of the screw conveyor below, and A heat dissipation pipe non-arrangement area is provided at the lower position to create a large gap, so it is easy to wash away small fish etc. remaining on the heat dissipation pipe with water during cleaning. In addition, gaps are provided between the side and bottom surfaces of the boil tank and each heat radiation pipe, and the bottom surface of the boil tank has an inclined surface that becomes lower toward the position below the axis of the screw conveyor. Therefore, residues such as small fish remaining in the boiling tank can be removed by pouring washing water.
It passes through the gaps and areas where heat dissipation pipes are not placed and collects at the lower part of the bottom of the boiling tank, but by further injecting water through the gaps, it can be easily flushed out of the boiling tank, making cleaning easy. .

Further, the gap becomes a part of the convection path during boiling, which increases the convection of the hot water and increases the temperature.

Further, the heat dissipation pipe arranged below the screw conveyor on a substantially concentric cylindrical surface around its axis can evenly heat the entire liquid in the boiling tank to a high temperature.

According to the continuous boiling apparatus for small fish according to claim 2, the temperature of the water at the end of the boiling tank on the side where the raw fish is introduced becomes particularly high, so that the fish becomes firm as soon as the raw fish is introduced, resulting in a high-quality product. is obtained.

In addition, the first partial heating part functions as an auxiliary heat, making it easier to raise the temperature of the water, and also causes small fish sent from the end of the boiling tank to rise to the surface due to boiling, so they will settle in the vicinity and rot. This can be prevented.

According to the continuous boiling device for small fish according to claim 3, a second partial heating section is provided between the outlet side of the screw conveyor and the conveyor device for taking out the boiled small fish to increase convection of hot water, Since the small fish are well spread, the small fish can be evenly placed on the conveyor device.

According to the continuous boiling device for small fish according to claim 4, the third partial heating section is provided near the bottom of the boiling tank below the guide plate arranged at the front end of the conveyor device for taking out small fish. Even if the convection of the hot water in the vicinity becomes active and as a result, the small fish placed on the conveyor device are not sent out, but instead adhere to the conveyor device and return to the vicinity of the third partial heating section, the small fish The fish is stirred by the convection of the hot water and floats up, and is sent to the side where the raw fish is input, so that it is prevented from settling in the vicinity and rotting.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part of an embodiment of the present invention (the fourth
Figure 2 is a plan view of the same embodiment, Figure 3 is a view from P in Figure 2, Figure 4 is a partially enlarged plan view of the same embodiment, and Figure 5 is a plan view of the same embodiment. FIG. 6 is a perspective view (partially cut away) of parts used in the embodiment, FIG. 6 is a sectional view taken from FIG. 4, and FIGS. 7A and 7B are partial sectional views showing modifications of the same embodiment. 8, 10, 70, 72... Boil tank, 12, 1
3... Screw conveyor, 20... Second conveyor (conveyor device), 24, 26... Bottom, 32,
34, 36, 38... Heat radiation pipe, 44, 46...
...Radiation pipe non-arrangement area, 52...Guidance plate, 54
...first partial heating section, 56...second partial heating section, 64...third partial heating section.

Claims (1)

[Scope of Claims] 1. In a continuous boiling device in which a screw conveyor is disposed in a boiling tank and small fish can be boiled while being transferred, heat is radiated by passing heated steam below the screw conveyor. A plurality of heat dissipation pipes capable of heating the surface of the pipes themselves and the liquid in the boiling tank are arranged on a substantially concentric cylindrical surface around the axis of the screw conveyor, and the screw conveyor is disposed on a substantially concentric cylindrical surface around the axis of the screw conveyor. A heat dissipation pipe non-arrangement area is provided below the conveyor axis, and the bottom surface of the boiling tank has an inclined surface that gradually becomes lower toward the position below the screw conveyor axis. A continuous boiling device for small fish, characterized in that each heat radiation pipe is arranged at a certain distance from the side and bottom of a boiling tank. 2. In the continuous boiling apparatus for small fish according to claim 1, each of the heat radiation pipes on the substantially concentric cylindrical surface faces the same direction as the screw conveyor and is arranged in parallel with adjacent heat radiation pipes in contact with each other or with a gap between them. At the same time, the heat dissipation pipes were arranged approximately symmetrically with respect to the heat dissipation pipe non-arrangement area below the axis of the screw conveyor, and were collectively connected to the ends of the raw material fish input side of each adjacent heat dissipation pipe. Heated steam is introduced from a steam introduction pipe and discharged from a steam exhaust pipe connected collectively to the other end of the heat radiation pipe, and the bottom surface of the boiling tank has a semicircular cross section, and The distance between the boiling tank and the heat dissipation pipe is a sufficient gap to prevent raw fish from clogging, or a sufficient gap to inject cleaning water to wash away raw fish adhering to the boiling tank during cleaning. A continuous boiling device for small fish, characterized in that a first partial heating section constituted by another heat dissipation pipe is provided near the bottom of a boiling tank upstream of the raw fish input side end of the Yuu conveyor. 3. It has a transfer device that can transfer small fish while boiling them in a boiling tank, and near the exit of the transfer device, one end of a conveyor device that can take out the boiled small fish is arranged inclined in the boiling tank. The continuous boiling device is characterized in that a second partial heating section composed of a heat radiation pipe is provided near the bottom of the boiling tank between the outlet side of the transfer device and one end of the conveyor device. Continuous boiling device for small fish. 4. It has a transfer device that can transfer small fish while boiling them in a boiling tank, and near the exit of the transfer device, one end of a conveyor device that can take out the boiled small fish is arranged inclined in the boiling tank. In the continuous boiling device, a guide plate for guiding small fish extends from one end of the conveyor device toward the bottom of the boil tank, and a heat dissipation pipe is installed below the guide plate and near the bottom of the boil tank. 1. A continuous boiling device for small fish, characterized in that a third partial heating section configured as above is provided.