JPH0139742B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seaweed drying apparatus for producing dried seaweed using a long or endless seaweed cage.

In conventional drying equipment for producing dried seaweed, a seaweed cage with raw seaweed on the surface is suspended or stretched in a drying chamber, and drying air is blown along both the front and back sides, usually from below upwards, to dry the seaweed. However, depending on the type of raw seaweed and the growing conditions, subtle unevenness in drying and differences in gloss may occur in dried seaweed, which affects the commercial value of dried seaweed products.

In addition, raw seaweed shrinks as it dries, and the degree of shrinkage varies depending on the type of raw seaweed, the state of growth, and the drying conditions. If the conditions are not met, the dried seaweed may crack, wrinkle, or tear, or the seaweed and seaweed cage may peel off early, reducing the product value, or the drying process and post-processing may be affected. It had drawbacks such as not proceeding smoothly.

An object of the present invention is to provide a drying device that eliminates the above-mentioned drawbacks of conventional drying devices by improving the method of applying drying airflow and the means for holding the seaweed cage.

That is, the present invention has a drive pulley and a guide pulley for suspending and moving a long or endless seaweed cage in a meandering manner in a box-shaped drying device main body, and a drying airflow heated by a heat exchanger. In the first stage of the drying process, the drying device has a duct with a blowing hole that blows air from the back side of the nori basin, and in the second stage, from both sides of the nori basin at a substantially right angle to the nori basin, and also includes a part or all of the guide pulley. This is a seaweed cage drying device characterized by serving as a sensor pulley for the expansion and contraction of the seaweed cage and for slowing down the running speed of the seaweed cage, and controlling the rotational speed of the nori drive pulley by the displacement of this sensor pulley.

Embodiments of the present invention will be described with reference to the drawings.
The figure is a side view of the heat exchanger main body 1 connected. The heat exchanger main body 1 is a known heat exchanger having a combustion device 2 consisting of an oil burner and a fan, a primary ventilation side through which generated high-temperature combustion gas escapes to a chimney 3, and a secondary ventilation side with a circulation fan for heat exchange with this. Since this is a replacement device, detailed illustrations are omitted. This secondary ventilation side is communicated with the drying device main body 10 through upper and lower connecting pipes 5 and 4 to form a circulation path.

FIG. 2 is a front view correspondingly showing the side plate of the drying device main body 10.

The main body 10 is formed into a box shape, and a long or endless seaweed cage 50 with raw seaweed cut into the surface in a step before this drying device is inserted into the main body 10 from the left side A in the drawing with the seaweed side facing up. It enters the main body, is suspended in a meandering manner by a group of pulleys arranged above and below within the main body, advances in a meandering manner, and exits to the right side B. At the top of one side of the main body 10, there is an entrance opening 11. The upper part of the other side has a screen outlet opening 12. Also, in the vicinity of the inlet opening and in the vicinity of the outlet opening, there are guide pulleys 13, 14 and 15' for guiding the movement of the screen. Between the guide pulleys 13 and 14 on the entrance side, there is a sensor pulley 15 that is pivotally supported so as to be able to move up and down or swing up and down.

A drive pulley 16,
17, 18, 19, 20, 21, 22 are installed, and guide pulleys 23, 24, 2 are installed below.
There are 5, 26, 27, and 28. 23 of them,
25, 27 are rotatably supported at fixed positions below the middle of the drive pulley, but 24, 26,
Each of the 28 guide pulleys is rotatably supported in a vertically movable or vertically swingable manner below the drive pulley to form a sensor pulley.

The drive pulley 16 includes a sensor pulley 15.
In the case where an electric motor (not shown) having a known control mechanism (not shown) that increases or decreases its rotational speed by vertical movement or vertical rocking displacement is connected, and the speed of the entering seaweed pen 50 changes. For example, when the approach of the seaweed cage 50 becomes faster than the circumferential speed of the drive pulley 16, the sensor pulley 15 descends,
This displacement is input as an instruction signal to the motor control mechanism to increase the rotation speed of the drive pulley 16. Then, the sensor pulley 15 starts to rise, and this displacement is fed back to the control mechanism and the drive pulley 1
6 is a circumferential speed equal to the entering speed of the seaweed cage 50, and the sensor pulley 15 is automatically controlled to maintain a fixed position.

Similarly, the rotation speeds of the drive pulleys 18, 20, 22 are automatically controlled by the sensor pulleys 24, 26, 28 immediately preceding them, respectively. The drive pulleys 17, 19, 21 are configured to be rotated in synchronization with the drive pulleys 16, 18, 20, respectively, by a belt or chain.
Note that the drive pulleys 17, 19, and 21 can also be used as guide pulleys that rotate freely.

The seaweed cage is guided and advanced in a meandering manner by guide pulleys 13, 14 and a sensor pulley 15. In this case, the pulleys 15, 23, 2 are in contact with the seaweed cage surface on the side where the raw seaweed is being cut.
The pulley surfaces of 4, 25, 26, 27, and 28 should be adjusted so that the surfaces of the pulleys corresponding to the nori cage are in contact with only the parts of the cage where raw seaweed is not cut, for example, in the case of single-row papermaking, only the edges are contacted. Either make the circumferential surface lower or, for example, divide the pulley into two parts and attach them to one shaft so that they correspond only to both edges.

Inside the main body 10, ducts 30, 31, .
8 and 39 are arranged close to the seaweed basin 50 which runs in a meandering manner.

Duct 30, 31, 32, 33, 34, 35,
36 is a duct 3 that blows a drying air flow to the back side of the seaweed basin 50, that is, the side where the raw seaweed is not cut, and is installed only in the rear half.
7, 38, and 39 are arranged so as to blow a drying air stream against the front side of the seaweed cage 50, that is, the surface where fresh seaweed is being cut.

The structure of the duct according to this embodiment is shown in FIG. Longitudinal openings 62, 62' are provided at the center of the long side of the hollow prism 61 of the duct material, and punching metals 63, 63' are attached to form blow-off holes. The long side of the duct prism corresponds to the width of the seaweed basin 50, and the short side corresponds to the interval between the seaweed basins 50. Further, the upper end of the duct is sealed, and the lower part forms a connection to a connecting pipe 4 with a heat exchanger.

Another embodiment of the duct is shown in FIG.

In this example, a group of openings 64, 64' are formed on the short side of the hollow prism 61 of the duct material, and flat plates 65, 65' having openings 66, 66' in the longitudinal direction of the center are attached to the surface of the short side. There is. This flat plate 65,
The width of 65' corresponds to the width of the seaweed cage 50, and the distance between the two flat plates corresponds to the distance between the seaweed cages 50.

Furthermore, the widths of the openings 62, 62' and the openings 66, 66' shown in the above embodiments range from 190 mm to 190 mm.
In the case of 210mm, spray it to the center of the width.
The length should be approximately 30mm. The gap between the airflow blowing surface of the duct and the seaweed cage 50 or seaweed surface is approximately
The drying airflow is set at 10 to 40 mm, and after being blown at right angles to the seaweed cage 50 or the seaweed surface, it passes through the gap between the two and is dispersed to the left and right. The drying airflow blown on the back side of the screen 50, and on both the front and back sides in the latter stage,
It flows from the middle of the seaweed pen to the right and left sides and upward, is collected in the connecting pipe 5 through the opening at the top of the main body 10 (not shown), flows into the heat exchanger 1, and is circulated.

In addition, openings 41, 42, 43, 4 with openable and closable dampers for intake of outside air are provided below the wall surface of the main body 10.
4, and exhaust fans 45, 46, which are equipped with a shutter for discharging the drying airflow inside the main body 10 to the outside and whose operation and stop can be controlled, are mounted on the ceiling wall.
47 and 48 are installed.

The embodiment of the present invention has the above-described configuration, and the nori cage is automatically taken into the device at a constant speed relative to the speed of the nori cage entering from the previous process of the device. The drying air stream is first blown onto the back side of the nori cage, drying the moisture contained in or attached to the screen and increasing the temperature of the cut raw nori.Then, the drying air stream is blown onto both the front and back sides to dry the seaweed. progress and complete.

According to experiments, when drying air is applied uniformly to the entire surface of the seaweed, drying progresses from both sides of the long seaweed (four sides for regular seaweed), and this area becomes too dry, reducing its commercial value. However, in the present invention, it is possible to achieve uniform drying by spraying on the central part.

As the degree of drying progresses, the cut seaweed shrinks together with the seaweed cage, but this is caught by the displacement of the guide pulleys 24, 26, and 28, which are the sensor pulleys described above, and this displacement signal causes the drive pulley 18 to , 20 and 22 are automatically controlled, so that the long or endless seaweed cages in this device can be easily moved in proportion to the shrinkage of the seaweed and seaweed cages.

If the temperature and humidity inside the machine are out of the appropriate value range due to continuous operation of the dryer, in addition to the burner control and fan control of the heat exchanger, the lower openings 41 to 4
The drying conditions inside the machine can be controlled by selectively opening and closing the exhaust fans 45 to 48 and selectively operating the exhaust fans 45 to 48.

The device of the present invention has an advantageous configuration for automatically controlling the heating conditions and circulation amount of the circulating drying air flow, the conditions for the amount of exchange with outside air, and the setting of conditions before, during, and after the drying process. It is as follows.

As described above, according to the present invention, the drying of seaweed and seaweed cages is allowed to proceed under reasonable conditions, and the entire surface of the seaweed is dried uniformly, but cracking and tearing due to drying shrinkage can be prevented, so that the finished product can be improved. It is possible to produce dried seaweed that is beautiful and has high commercial value.

[Brief explanation of drawings]

FIG. 1 is a side view, FIG. 2 is a front view with the side plate removed, and FIGS. 3 and 4 are cross-sectional plan views of the duct.

Claims (1)

[Claims] 1. The main body includes a drive pulley and a guide pulley for suspending and moving a long or endless seaweed cage in a meandering manner, and a part or all of the guide pulley is
The sensor is configured to detect the expansion and contraction of the seaweed cage and its displacement due to slow operating speed, and also serves as a sensor to control the rotational speed of the driving pulley of the seaweed cage. A seaweed drying device characterized in that a duct is provided with a blow-off hole that blows air from the back side of the screen, and from both the front and back sides of the screen at a later stage, and is equipped with a blow-off hole that blows air substantially perpendicularly to the screen.