JPH077755Y2 - Foreign matter removal device in nori seaweed - Google Patents

Description

[Detailed description of the device]

[0001]

[Field of Industrial Application] The present invention relates to a foreign matter removing device for raw algae in Nori seaweed. More specifically, prior to the production of dry Nori by a dry seaweed producing device, the foreign matter in the raw algae collected in the ocean is detected. The present invention relates to a foreign matter removing device for removing seaweed protozoa.

[0002]

2. Description of the Related Art Various foreign substances such as shells, plastic pieces, wood pieces, leaves of trees, and feathers of waterfowl are mixed in the sheet-shaped dry seaweed produced by an apparatus for producing dry seaweed. Most of these foreign substances adhere to the algae during cultivation of the seaweed protozoa in the ocean.

Therefore, there is already known a device for producing sheet-like dry laver with a dry laver producing device, detecting foreign substances mixed in the dry laver, and selecting dry laver mixed with foreign substances as defective laver.

[0004]

[Problems to be Solved by the Invention] As described above, most of the foreign substances adhere to the algae during the cultivation in the ocean, so the foreign substances are removed at the stage of the algae sent to the dry seaweed production equipment. It is desirable to do so, and in this way bad seaweed is drastically reduced.

However, since it is extremely difficult to detect and remove the foreign matter mixed in the raw algae, the raw algae is sent to the dry seaweed producing apparatus without removing the foreign matter to produce dry seaweed. As a result, a large number of defective seaweeds are produced, resulting in a very poor yield. Therefore, it is an object of the present invention to provide a foreign matter removing device in a seaweed protozoa capable of detecting and removing a foreign matter mixed into the algae at the stage of the algae.

[0006]

To this end, the present invention is directed to a camera or the like while flowing a mixed water obtained by mixing the raw algae m collected in the ocean with dissolved water such as seawater or water and diluting it. The optical means 55 detects the foreign matter K in the mixed water. When the foreign matter K is detected, the mixed water containing the foreign matter K is bypassed and removed by the bypass means 60.

[0007]

According to the above construction, the foreign matter K in the mixed water can be easily detected by the optical means 55. When the optical means 55 detects the foreign matter K, the foreign matter K is detected.
Since the mixed water containing the foreign matter K is removed from the bypass means 60 and only the mixed water containing no foreign matter K can be supplied to the dry seaweed production apparatus, a good quality dry seaweed containing no foreign matter K can be produced.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is an overall side view of the foreign matter removing device in the seaweed protozoa. Reference numeral 1 is a storage tank in which the original algae m collected in the ocean is stored. The foreign alga K adhering to the algae m during aquaculture in the ocean is mixed. The raw alga m is pumped by the pump P1 through the pipe 2 to the rough cutting means 11 installed on the table 4.

FIG. 2 shows the internal structure of the rough cutting means 11. The rough cutting means 11 includes a cylindrical case 12,
The case 12 includes a fixed blade 13 and a rotary blade 14 arranged inside the case 12, and a motor 15 for rotating the rotary blade 14. The fixed blade 13 is provided with a hole portion 16 for allowing the algae m to pass therethrough.

The raw algae m fed under pressure from the pipe 2 into the case 12 is pushed upward and, when passing through the hole 16 of the fixed blade 13, is cut by the rotary blade 14 rotating on the fixed blade 13, It is discharged to the pipe 3 connected to the upper surface of the case 12. The length of the raw algae m collected in the ocean is generally several tens of cm or more, or 1 m or more, and it is extremely difficult to detect the foreign matter K mixed into the long raw algae m by the optical means described later. Have difficulty. Therefore, in this means, the original algae m is about 3 to 20 cm, preferably 10 cm.
By roughly cutting into a length, the foreign matter can be easily detected by the optical means. If the raw algae m is finely cut without rough cutting, the foreign matter K is also finely cut and contaminates in the raw algae m, which makes detection by optical means difficult. It is desirable to do.

In FIG. 1, a draining means 21 is provided on the table 4, and the raw algae m roughly cut by the rough cutting means 11 is supplied to the inside of the draining means 21 through the pipe 3. The draining means 21 pumps up the original algae m in a spiral shape as shown by an arrow while
The water draining means 21 is a well-known device for dehydrating the inside water or seawater, and the description of its structure is omitted.

The algae m that has been drained by the draining means 21
Is discharged to a gutter 22 arranged above the water draining means 21, and the gutter 22 is made to flow down and thrown into a hopper 23.
The raw alga m fed into the hopper 23 is supplied to the stirrer 31 by the pump P2. Reference numeral 6 denotes a water tank in which water or seawater (hereinafter referred to as “melted water”) is stored, and the melted water is passed through the tubes 7 and 8 by the pump P3 and the agitator 31.
Is supplied to. The raw algae m supplied from the hopper 23 is mixed with this melted water and diluted to become a mixed water of the raw algae m and the melted water.

Next, referring also to FIGS. 1 and 3,
The detailed structure of the stirrer 31 will be described. This stirrer 31
Mainly includes the box 32. This box 32
Is preferably formed of transparent plastic or glass so that the inside can be seen from the outside. Partition plates 331 to 335 are erected inside the box 32 with a pitch, and the inside of the box 32 is divided into a plurality of (five in this embodiment) spaces T1 to T5.

In FIG. 4, the tubes 7 and 8 are the first
The molten water is supplied to the space T1 of. Neck details 7a and 8a having a small cross-sectional area are formed in the tubes 7 and 8, and therefore, the molten water is vigorously supplied to the space T1 and the lumpy algae m
Positively disperse. In this way, melt water in box 32
As a means for vigorously supplying to, for example, the tube 7,
It is also possible to connect an injection nozzle to the tip of 8 and force the molten water to be ejected from the nozzle.

Partition plates 331 to 331, as shown in FIG.
No. 35 is provided upright with alternating steps, and the mixed water obtained by diluting the raw algae m thinly flows down and over each partition plate 331 to 335 as shown by the arrow toward the downstream side. It is stirred by flowing. Thus, by stirring the raw algae m and dispersing it in the melted water, the foreign matter K attached to the raw algae m is separated from the raw algae m to be easily detected by optical means, and the foreign matter having a large specific gravity such as a shell. K1 settles at the bottom of the box 32 and is removed.

In FIG. 3, reference numeral 41 is a sprinkler installed above the stirrer 31 as a defoaming means. The sprinkler 41 includes a square pipe 42, a water supply pipe 43 for supplying water to the pipe 42, and a plurality of shower bodies 44 connected to the pipe 42. As shown in FIG. 1, a large amount of bubbles a are generated in the mixed water in the stirrer 31.
This bubble a hinders the detection of the foreign matter K by the optical means. Therefore, in this means, the bubbles a are extinguished by spraying water from the shower body 44. As a defoaming means,
For example, a means for applying ultrasonic vibration to the mixed water, a means for applying a defoaming agent, or the like can be applied, and some defoaming means may be combined.

In FIGS. 1 and 3, a water channel 51 is connected to the discharge side of the box 32. Also this waterway 51
A sloping water channel 60 as a bypass means is connected further downstream than that, and a recovery tank 71 is provided below it. The water channels 51 and 60 are formed in a gutter shape by a metal plate or a synthetic resin plate.

A light transmitting plate 53 is provided in the middle of the water channel 51 (see also FIG. 5). A light source 54 is disposed below the light transmitting plate 53 so as to sandwich the light transmitting plate 53, and optical means 55 such as a camera or a line sensor is disposed above the light source 54. For example, an LED line light source is applied as the light source 54. As the light transmitting plate 53, a light diffusing plate having a roughened surface is used so that light can be scattered uniformly and an image having a uniform brightness can be taken into the optical means 55. Reference numeral 56 is a bracket for mounting the optical means 55.

The foreign matter K in the mixed water flowing through the water channel 51 is detected by the optical means 55, but the depth of the mixed water flowing through the water channel 51 is made as shallow as possible, and the mixed water is kept in a laminar flow state so that the water channel 51 is quiet. By flowing, the foreign matter K is easily detected by the optical means 55. In this case, the algae m is sufficiently dispersed and the foreign matter K is separated from the algae m in the stirrer 31 as described above, and the algae m is diluted thinly with the dissolved water, so that the optical means 55 is used. Thus, the foreign matter K can be easily detected.

The lower end of the inclined water passage 60 is rotatably attached to a hinge 61. A shaft rod 62 is bridged over the side wall of the inclined water passage 60. On this shaft rod 62, a rod 65 of a solenoid 64 as a driving means for rotating the inclined water channel 60 around the hinge 61 is provided with an arm 63.
Are connected through. Reference numeral 66 is a coil spring that biases the inclined water passage 60 upward. Rod 6 of solenoid 64
In the state where 5 is projected, the inclined water channel 60 holds the position shown by the solid lines in FIGS. 1 and 5, and the mixed water flowing from the water channel 51 flows down the inclined water channel 60 and is collected in the recovery tank 71. Further, when the rod 65 is pulled in, the inclined water passage 60 rotates counterclockwise around the hinge 61 to the position shown by the chain line, and the mixed water flowing through the water passage 51 moves downward into the box 5 below.
It falls to 7. As the driving means for operating the inclined water passage 60 in this way, a motor, a cam or the like can be applied in addition to the solenoid 64.

The box 57 is a collecting section for the mixed water containing the foreign matter K and is formed of a mesh for draining water. That is, the inclined water channel 60 is provided with a mixed water recovery tank 71.
The bypass means is a bypass means for bypassing the flow to the box 57 without flowing into the box 57. As the bypass means, for example, an openable / closable opening is provided on the bottom surface of the water channel 51 in addition to the embodiment.
The mixed water may be dropped from this opening to bypass it.

A screen 72 is installed obliquely between the inclined water channel 60 and the recovery tank 71, and the mixed water flowing out from the inclined water channel 60 is filtered by the screen 72 and drops into the recovery tank 71. . As shown in FIG. 1, a frame 74 is attached to the recovery tank 71.
4 has a plurality of water level gauges 751, 752, 753. The water level gauges 751, 752, and 753 have different detected water levels. A discharge pipe 76 is connected to the recovery tank 71, and the mixed water is sent to a dry seaweed production apparatus (not shown) by a pump P4.

FIG. 6 is a block diagram of an electric circuit. The detection signals of the optical means 55 and the water level gauges 751, 752, 753 are input to the controller 80. The controller 80 controls the light source 54, the solenoid 64, the pumps P1 to P4, and the like.

FIG. 7 shows a time chart of the operation of the optical means 55 and the solenoid 64. When the optical means 55 detects the foreign matter K, the signal from the optical means 55 causes
The control unit 80 controls the solenoid 64 as follows. That is, the rod 65 of the solenoid 64 retracts after a slight time t1 from this detection timing, and the inclined water channel 6
Rotate 0 downwards. When the detection of the foreign matter K is completed, the rod 65 projects with a slight delay t2, and the inclined water passage 60 is rotated upward. During this time, the mixed water containing the foreign matter K is bypassed to the box 57 side. The times t1 and t2 are determined by the time required for the foreign matter K to flow from directly below the optical means 55 to the inclined water channel 60.

This foreign matter removing device has the above-mentioned structure, and the operation of the whole will be described below. In FIG. 1, the raw alga m that has been pressure-fed from the storage tank 1 to the rough cutting means 11 by driving the pump P1 is the rough cutting means 11
It is cut into a length of about 10 cm by a fixed blade 13 and a rotary blade 14 which are built in. The cut algae m is sent to the draining means 21, drained there, and then discharged to the gutter 22, and then flows down the gutter 22 into the hopper 23, and is further driven by the pump P2. , Stirrer 31
Is sent to the first space T1 of the box 32.

When the pump P3 is driven, the molten water in the water tank 6 is also sent to the first space T1, and the molten water is vigorously ejected as shown in FIG. m is forcibly dispersed. In this way, the algae m
The mixed water that is mixed with the flow is divided into partition plates 331 to 331.
Sent to each space T2-T5 while overflowing / overflowing 35,
In the meantime, the raw algae m is further stirred and the raw algae m and the foreign matter K attached thereto are separated, and the foreign matter K1 having a large specific gravity, such as a shell, of the foreign matter K settles to the bottom of the box 32. The settled foreign matter K1 may be manually taken out from the box 32 when the operation of the apparatus is stopped.

A large amount of bubbles a are generated in the mixed water by stirring, and the bubbles a become noise of the optical means 55. Then, by spraying water from the shower body 44, the bubbles a are extinguished.

The mixed water in which the algae m has been sufficiently stirred in this way flows out into the water channel 51 and becomes a shallow laminar flow.
1, the foreign matter K in the mixed water is detected by the optical means 55 in the middle thereof. When the foreign matter K is detected, the solenoid 64 operates as described above to discharge the mixed water containing the foreign matter K to the box 57, and only the mixed water containing no foreign matter K is collected in the collecting tank 71.

The water level in the recovery tank 71 is the water level gauges 751 and 75.
2, 753. Here, if the water level gauge 752 in the middle detects the water level, the water level in the recovery tank 71 is good, and the operation is continued as it is. When the deepest water level gauge 751 detects the water level, the water depth of the recovery tank 71 is too deep and the mixed water overflows from the recovery tank 71.
1, P2, P3 are reduced in driving force to reduce the amount of mixed water sent to the recovery tank 71, or pump P4 is increased in driving force to increase the amount of mixed water supplied to the dry seaweed manufacturing apparatus side. The water level in the recovery tank 71 is lowered by increasing the water level. If the shallowest water level gauge 753 stops detecting the water level, the pump P2
The driving force of P3 is increased to increase the mixed water to the recovery tank 71, or the driving force of the pump P4 is decreased or stopped to stop the feeding of the mixed water. Such control is performed by the control unit 80.

Although the raw algae m collected in the box 57 may be discarded, it may be put into the hopper 23 or the box 32 again. In this case, since the raw alga m contains a considerably large amount of the foreign matter K, it is desirable to supply a small amount of the raw alga in the box 32 and dilute it more thinly.

[0031]

As described above, according to the present invention, the foreign matter K is detected by the optical means 55 while the mixed water of the algae m and the molten water is made to flow through the water channel 51, and when the foreign matter K is detected, the bypass means 60 is used.
Since the foreign matter K is bypassed to remove the foreign matter K, it is possible to remove the foreign matter K contained in this at the stage of the algae m and supply the mixed water not containing the foreign matter K to the dry seaweed production apparatus. It can be drastically reduced, and the yield of dry seaweed production can be significantly improved. The device according to the invention is
It can be incorporated into an existing dry seaweed production line as it is, and various operations from detection and removal of foreign matter in raw algae to dry seaweed production can be performed as a series of continuous operations.

[Brief description of drawings]

FIG. 1 is a side view of a foreign matter removing device according to an embodiment of the present invention.

FIG. 2 is a sectional view of rough cutting means according to an embodiment of the present invention.

FIG. 3 is a perspective view of a main part according to an embodiment of the present invention.

FIG. 4 is a sectional view of an agitator according to an embodiment of the present invention.

FIG. 5 is a sectional view of a main part according to an embodiment of the present invention.

FIG. 6 is a block diagram of an electric circuit according to an embodiment of the present invention.

FIG. 7 is a time chart of operation according to an embodiment of the present invention.

[Explanation of symbols]

 51 Water Channel 55 Optical Means 60 Inclined Water Channel (Bypass Means) 64 Solenoid (Bypass Means) 80 Control Unit m Raw Algae K Foreign Material

Claims (1)

[Scope of utility model registration request] 1. A water channel 51 for flowing a mixed water obtained by diluting the seaweed protozoa m collected in the ocean with melted water, an optical means 55 for detecting a foreign substance K in the mixed water flowing in the water channel 51, and this optical means. Bypass means 60 provided downstream of 55
And drive means 64 for operating this bypass means 60
When the foreign matter K is detected by the optical means 55, the controller for controlling the drive means 64 to remove the mixed water containing the foreign matter K from the bypass means 60 by the signal from the optical means 55. 80. A device for removing foreign matter from seaweed protozoa, which comprises 80.