JP2019195274A - Fine foreign matter removing system for green laver (monostroma nitidum), fine foreign matter removing method, and green laver produced by the same - Google Patents

Abstract

To provide a method of further removing, highly efficiently and with high probability, fine foreign matters such as shell pieces from green laver that has been subjected to removal processing of coarse or medium-sized foreign matters.SOLUTION: A fine foreign matter removing system of this invention includes a step of thinly extending leaf bodies of green laver on an LED light-emitting screening conveyor that is a light transmission device together with low concentration saline water, while causing the green laver to be freely suspended, the green laver having been subjected to removal processing of coarse or medium-sized foreign matters by a conventional technique. The system is configured to enable easy visual distinction of fine foreign matters by contrasting a transmission state of LED light that is transmitted through the thinly extended leaf bodies of green laver, the LED light being illuminated from a bottom surface of the LED light-emitting screening conveyor and a transmission state of LED light that is caused to be transmitted through the fine foreign matters mixed in the green laver.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fine foreign matter removing system for blue paste (human rabbit: hereinafter referred to as blue paste). Further, the present invention relates to a method for removing the fine foreign matter and blue glue produced by the method.

  In conventional blue paste production, blue paste grown in the sea is collected, washed thoroughly with seawater or fresh water using a washing machine, and water is removed with a centrifuge. After that, the hardened blue paste is unwound and placed in a Sero and dried with a dryer. The dried blue glue was boxed by removing the foreign material by visual inspection. However, the conventional technique only removes foreign matters that have floated during cleaning, and foreign matters that are visually found when they are spread on the air before drying.

  Aonori is cultivated by hitting bamboo stakes and connecting seed nets mainly along the estuary coast of brackish water. Such a place is close to the human sphere, and the inflow of trash from the river (wara, wood chips, plastic pieces, fishing lines, etc.), feathers of migratory birds that inhabit coastal brackish waters, insects and mussels inhabiting brackish waters As arthropods such as juvenile shellfish, tiger shrimp, and warekara are often attached to the green algae, it was a challenge how to remove this extraneous matter.

  On the other hand, in the case of plate seaweed, foreign matter has been removed in the same way, but compared to blue seaweed, the material of plate seaweed is often used as a cultivar called Narawas Sabinori, which has been selected and bred for aquaculture. It is often cultivated in the sea area relatively distant from the living area, and therefore there are fewer foreign substances compared to blue glue. At present, fishermen use a variety of foreign material removal machines to remove foreign materials, finish them in a large-sized paste manufacturing machine (fully automatic paste dryer), and put them in a bid for 100 sheets. The tendered board paste is baked by a seaweed processing company through a drying process called `` fired '' and becomes a product, and after the baking process, foreign objects and holes of a different color from black paste are used with a color sorter and foreign object detector. The open or torn nori is sorted out at that point. On the other hand, the blue paste is not shaped like a sheet like a plate nori, but is produced as an irregular lump with an indefinite number of green paste leaves dried and polymerized to each other. Sorting is not easy.

  Furthermore, with plate laver, it is dried and commercialized in a state where multiple laver leaves are laminated, so even if foreign matter is mixed in, the foreign matter is mixed and fixed inside the laver leaf laminate, leaving the appearance inconspicuous. It is relatively rare to make a consumer complaint because it is eaten. On the other hand, in the case of Aonori, there is a high demand for miso soup, tempura, side dishes, boiled rice, etc., and when consumers eat, each laver leaf body of Aonori absorbs the juice and leaves Each piece absorbs water and floats freely in the tableware. For this reason, the foreign matter mixed inside is easier to touch the eyes of the consumer than the plate seaweed, and if a foreign matter is found in the product, it is likely to become a consumer complaint. In this way, in the case of blue paste, it is very common to make a foreign matter claim, so how to remove the foreign matter is a big problem for the blue paste producer.

  Currently, manufacturers that produce side dishes and simmered dishes using blue glue use their employees at their own factories to remove the dried blue paste and reconstitute it with a manufacturer's own method to remove foreign matter. . When selling dried blue paste to general consumers, manufacturers remove the foreign matter by breaking dry blue paste or crushing it with a pulverizer. In order to reduce the labor and cost involved in manufacturing, manufacturers are eager for blue paste raw materials from which foreign matters have already been removed as much as possible, but there is no practical method for removing foreign matters from blue paste reliably and efficiently. .

  In Japanese Patent Laid-Open No. 10-57020, agitation / washing action is repeated by bubbling water flow by bubbling water jet to separate and wash seaweed foreign matter, and further float by overflow drainage, precipitation action, and drainage of water in the washing tank. A method for removing foreign matter, neutral buoyancy foreign matter and precipitated foreign matter is disclosed. However, there is a problem that the fine foreign matter caught in the blue paste and the foreign matter that adheres strongly are hardly removed.

  Similar to the above-mentioned patent, the utility model No. 305204 discloses a foreign matter removing device in seaweed. That is, a device is disclosed in which a framework is formed in a stool shape, and when the seaweed enters, a coarse trash is removed with a stool-like box and a clean seaweed is sucked up by a pump. However, in this case, there is a problem that small fine foreign matter, foreign matter caught in blue paste, and foreign matter that adheres strongly cannot be removed sufficiently.

JP-A-10-57020 Utility Model No. 305204

  However, even with the above technology, it is not possible to effectively remove miscellaneous fine foreign matters drifting in the sea from blue paste, and there is no realistic system or method for removing fine foreign matters from blue paste reliably and efficiently. It can be said that it is a big problem.

  In order to solve the above-mentioned problems, in the system and method for removing fine foreign matter from blue paste (human rush) according to the first embodiment of the present invention, after removing coarse and medium foreign matter from the raw algae of blue paste, the blue paste is subjected to a salt concentration. Freely suspended in green salt water, the leaf body of blue glue that has been suspended freely is thinly diffused along with salt water on the light sorting conveyor, which is a translucent device. Keep on. This light sorting conveyor is an endless rotating belt that rotates in a horizontal direction at a predetermined speed. And since this light sorting conveyor is made of a translucent material, when light is projected onto the belt with a predetermined illuminance from the light source at the bottom of the belt, it remains stationary and wet in a thin water film on this light sorting conveyor. Each leaf body in FIG. 1 transmits light from a light source and generally transmits light afterglow in a light green color. By visually recognizing the leaf body of the blue paste that has been subjected to the translucent shadow, it is possible to easily select and remove the mixing of fine foreign matters. In other words, foreign matters such as fine shell pieces and laver net pieces other than the leaves of the blue paste have a low transmissivity different from that of the blue paste, and therefore leave behind a relatively black light through the salt water. The foreign matter having different translucency and black and translucent shadow is sorted and removed manually.

  Also, in the second embodiment, the operator does not visually recognize the position information of the foreign matter that is transparently shaded black through the salt water, for example, always taking a plane image of the light sorting conveyor, and among the plane image data, You may comprise so that the presence position of a fine foreign material may be detected by detecting the spot which is the brightness below a predetermined threshold value with an optical sensor. Then, a plurality of fine foreign objects detected on the endless rotating light sorting conveyor are spot-circulated and irradiated at predetermined intervals by the laser pointer 32, and the operator manually removes the fine foreign substances in the spot-circulated spot. You may do it. This eliminates the need for the operator to visually search for the fine foreign matter, and enables the removal of the fine foreign matter according to spot circulation irradiation, which has the advantage that a small number of workers are sufficient. It is also possible to improve the work efficiency by changing the rotation speed of the light sorting conveyor according to the number of fine foreign substances detected on the conveyor.

  Furthermore, in the third embodiment, in order to fully automate the removal operation of the fine foreign matter without relying on human hands, the above-mentioned fine foreign matter detected by light is sucked and removed by driving a robot arm having a spot suction function at high speed. It is conceivable to configure such as. Further, instead of the suction function, a configuration in which spot compressed air is discharged from the tip of the robot arm to blow off the fine foreign matter, or the fine foreign matter is picked up with fine tweezers attached to the tip of the arm is also conceivable.

  According to the present invention, light is irradiated from the lower surface through the conveyor toward the upper surface, so if the leaf body of blue glue that is freely suspended in salt water on the endless rotating light sorting conveyor is thinly extended, a certain thickness is obtained. The green leaf body and the fine foreign matter are clearly discerned visually through the water film. For this reason, it is possible to visually recognize fine foreign matters more efficiently than by recognizing natural light instead of in a water film, and there are advantages that the number of types of visual foreign matters increases and fine foreign matters can be removed more reliably. Further, it is possible to eliminate the manual search for foreign matter by visually detecting the fine foreign matter with an optical sensor instead of the visual search, and irradiating the operator with the laser pointer by spot circulation at a predetermined interval. Further, it is possible to save labor by removing the fine foreign matter with a robot arm.

(A) is a top view of the fine particle removal system 100 for blue paste for removing fine foreign particles from the green paste algae according to the first embodiment of the present invention, and (B) is a side view. (C) is an enlarged view of a belt portion indicated by a broken line in (B). (A) is the conceptual diagram which shows the state which cannot distinguish a leaf body and a fine foreign material in the state which extended the leaf body of the blue paste | float freely floated in low concentration salt water on the LED light emission selection conveyor 1 without emitting LED light. And (B) clearly distinguishes the leaf body and fine foreign matter in the water film in a state where the leaf body of the blue paste which is caused to emit LED light and freely floated in low-concentration salt water on the LED light emission sorting conveyor is thinly extended. It is a conceptual diagram which shows the state which can be performed. (A) is a top view of the fine foreign material removal system 100 for removing fine foreign materials from the green paste algae according to the second embodiment of the present invention, and (B) is a side view. (A) is a top view of the fine foreign material removal system 100 for removing fine foreign materials from the green paste algae according to the third embodiment of the present invention, and (B) is a side view.

(First embodiment)
FIGS. 1A and 1B are a top view and a side view, respectively, of a fine foreign substance removal system 100 for removing fine foreign substances from the green paste algae according to the first embodiment of the present invention. The LED light emission sorting conveyor 1 using, for example, LEDs as a light source has a structure in which an LED light emitting device 20 is provided in the lower part thereof and is irradiated with a plurality of LED elements (not shown) from the lower part of the conveyor. The material of the conveyor is an endlessly rotating belt 10 of a translucent material, and the plane length of the work table is not particularly limited, but is about 2M in consideration of workability. The LED light emitting sorting conveyor body itself is a general-purpose product according to the prior art. However, in the LED light emission sorting conveyor 1 according to the present invention, the rotation speed of the belt can be changed by an operator with a shift pedal 11 placed on the floor as will be described later, and further, a blue paste may be automatically supplied.

  Hereinafter, the procedure of the fine foreign matter removing method according to the first embodiment will be described. First, as a procedure before processing the blue paste by the LED light emitting sorting conveyor 1, the blue algae raw algae as a raw material is picked from the aquaculture net by a plucking boat and sucked up by a pump. The seaweed at this stage may contain many foreign matters such as diatoms in seawater, floating seawater, broken pieces of nets, small pieces of shellfish, etc. Therefore, the raw algae of the raw material blue paste is put into a raw material blue paste stirring tank made of metal and resin. A stirrer is attached to the center of the raw blue paste stirring tank, and the raw algae of the blue paste is stirred and diffused with salt water produced with salt / tap water by a stirring rod connected to the motor of the stirrer. And it is discharged | emitted from the discharge port opened in the middle bottom of the water tank, and is mixed with cooling tap water. Here, green seaweed algae become free floating bodies and are adjusted to low-concentration salt water (0.6% or less). Subsequently, before being sent to the LED light emission sorting conveyor 1, the foreign matter is removed by three kinds of foreign matter removing machines (a large washing dust removing machine, a continuous foreign matter removing and cleaning machine spiral, and a disk removing machine). Thereafter, according to the request of the shipping destination, the leaf body of the green paste is cut into a predetermined size, and further immersed in a container with a net overflowed with a slightly acidic electrolyzed water in a square container for 3 minutes or more to sterilize. After that, it is dried with a dryer and commercialized as a blue paste. If necessary, this dry blue paste is further visually inspected to check for contamination.

  Up to the above-described work process, there is no particular difference from the conventional process of manufacturing blue paste or plate seaweed. In particular, the common way to eat blue paste is often poured into a dry blue paste with a clear soup like a soup and served as a fresh blue paste. In this case, as described above, even if the dry blue paste is finally visually inspected, the leaf body of the blue paste is indefinitely shaped and laminated and dried at the time of commercialization, and the fine particles that remain in the laminated and dried leaf are accidentally left. It is difficult to completely remove the foreign matter simply by visual confirmation. In particular, the dried blue paste put into the soup is free to float in the tableware by separating the leaves one by one. It is easy to touch the consumer's eyes. Therefore, in the fine foreign matter removal system 100 according to the present invention, first, the green seaweed before the fine foreign matter removal sterilized as described above is put into a low concentration salt water tank 50 filled with low concentration salt water (0.6% or less), This tank is arranged in the vicinity of the uppermost stream position of the LED light emission sorting conveyor 1 while the leaf body of the blue paste is allowed to float freely.

  Then, an operator draws an appropriate amount of the blue glue floating freely from the tank 50 together with salt water and diffuses it on a work table such as a light sorting conveyor, for example, the LED light emitting sorting conveyor 1. This LED light-emitting sorting conveyor 1 has an endless rotating belt 10, and in the partial area C of FIG. 1B on the rotating belt, as shown in the conceptual cross-sectional view of FIG. As a result, a water film of a certain thickness is formed, and each leaf body of blue paste remains in a static and wet state in this water film. And the LED light is irradiated from the belt lower part with respect to the leaf body of blue glue in this stationary wet state. At that time, the LED light is uniformly transmitted through the horizontally diffused water film, and is uniformly irradiated to the leaf body of the blue paste, and each leaf body is translucent to light green. In other words, low-concentration salt water has high light transmittance, and the leaves of the blue paste have an almost constant thickness, so each leaf of blue paste is irradiated while being separated and diffused in the low-concentration salt water. The LED light has a certain light transmittance. Moreover, even if several leaf bodies are stacked and suspended, they have a certain light transmittance. On the other hand, fine foreign substances to be originally removed in the present invention, such as garbage from the above rivers (straw, wood chips, plastic pieces, fishing lines, etc.), feathers of migratory birds that inhabit coastal brackish waters, insects, The mussel larvae, arthropods such as lobster and walnuts, etc. have clearly different transmissivities, so that the operator can visually identify them by the difference from the transmissivity of blue glue. In this way, the LED light irradiated from the lower surface of the conveyor is transmitted through the blue green leaf body diffused on the LED light emission sorting conveyor 1 to visually recognize the leaf body, and other than the blue green leaf body having a low transmissivity. By visually identifying the foreign matter, small foreign matter and fine foreign matter mixed in the blue paste can be manually removed.

  In this case, for example, in the optical foreign matter removing method according to the conventional example using the same LED light emitting sorting conveyor 1 to confirm that no foreign matter such as larvae is attached to the leaves of lettuce, a water film having high translucency Unlike the leaves of blue glue, which are separated and diffused inside, LED light does not transmit evenly to lettuce leaves that have been drained rather than stationary and wet in water, and therefore due to the difference in translucency Foreign substances adhering to the leaves of lettuce cannot be accurately identified. In other words, the most characteristic feature of the present invention is that a water film having a certain thickness is formed on the endless rotating belt 10 by surface tension, and the leaf body of blue glue to be inspected is in a static wet state in this water film. In this configuration, the LED leaves are irradiated from the lower part of the belt to cause the leaf body of blue glue to light-transparent after light, while the fine foreign matters having different light transmittances are subjected to black after-transmission.

  FIG. 2 (A) shows a state in which the leaf body of blue glue that is in a stationary and moist state is thinly extended in the water film of low-concentration salt water on the LED light-emitting sorting conveyor 1 as a work table without causing LED light emission. In this case, it is not possible to distinguish between the leaf body of blue paste and fine foreign matter. That is, fine foreign matter is not known only by natural light without being irradiated with LEDs from under the conveyor. This is because the leaf body of blue glue is thin and has high light transmissivity, but has a light reflectivity almost equal to that of a foreign substance with respect to natural light and is difficult to identify by visual inspection. On the other hand, in FIG. (B), if LED illumination is performed from the lower part of the conveyor, and the leaf body of blue glue in a stationary and wet state is thinly spread on the LED light-emission sorting conveyor, it is made transparent. The leaf body of blue glue, which has high translucency, is translucent to light green, while foreign objects such as small pieces of shells and pieces of nets are translucent to black because of low translucency. Due to this difference in translucency, the foreign substance discovery rate can be significantly improved.

  In addition, the leaf body of the blue paste in a stationary wet state in the water film is not necessarily thinly extended on the LED light emission sorting conveyor 1 in a state of being separated one by one. That is, there may be a case where LED irradiation is performed from below the conveyor in a state in which several leaves are superposed. Therefore, not all of the leaves are translucent to a uniform light green color, but the polymer of multiple leaves and the fine foreign matter have different transmissivities, so the location and timing of the green algae original algae are collected. Considering such characteristics, it is possible for the visual operator to visually recognize the difference in the light transmittance between the two so as to efficiently remove the foreign matter.

  In actual work, the endless rotating belt 10 of about 2M is set to move and rotate from the most upstream side to the most downstream side in about 15 to 20 seconds. Then, an appropriate amount of blue glue before removing the fine foreign matter is diffused on the belt on the most upstream side of the belt by an appropriate amount together with salt water. Four workers are arranged on both sides of the LED light-emitting sorting conveyor 1, and the fine foreign matters that are black and light-transparent are removed manually as described above. In the middle of the removal work, the process of drawing blue seaweed before removing fine foreign substances from the low-concentration salt water tank 50 and diffusing it to the most upstream side of the belt is repeated. The blue paste after the removal of the fine foreign matter is spontaneously dropped at the same time as the rotating belt faces downward on the most downstream side of the belt and is collected in the collecting rod 90. In the fine foreign matter removal system 100 according to the present embodiment, the mixing rate of the fine foreign matter varies depending on the place where the green seaweed algae is collected, the collection time, etc., and therefore the rotational speed of the endless rotating belt is arranged on the floor in order to improve work efficiency. The shift pedal 11 can be changed freely. In the above example, the operator manually draws an appropriate amount of the blue paste that is free floating from the tank with a small hand with the salt water and spreads it on the belt. It is good also as a structure which supplies automatically the blue glue which is free floating in the concentration salt water with a salt water from the automatic supply part 12 with a pump.

(Second embodiment)
3A and 3B are a plan view and a side view of the fine foreign matter removing system 100 according to the second embodiment. Here, in addition to the LED light emission sorting conveyor 1, an optical device 30 is provided in the space above the belt. The optical device 30 includes an imaging device 31, a laser pointer 32, and a movable reflection mirror 33. As described above, in the first embodiment, due to the difference in translucency, the operator visually confirms the leaf body of blue glue that is translucent to light green and the fine foreign matter that translucent to black. In the fine foreign matter removing system 100 according to the embodiment, the optical device 30 optically recognizes the fine foreign matter as an image. A plurality of fine foreign matters that are image-recognized black and have a translucent shadow are irradiated with laser light instantaneously to repeatedly give instructions to the operator to remove the fine foreign matters. That is, specifically, a green leaf that is stationary and wet in a low-concentration salt water film thinly diffused on the belt by the imaging device 31 in the optical device 30 placed in the central upper space of the endless rotating belt 10. Always image the body. The captured image data is image-analyzed by an image control unit (not shown), and the leaf body part of blue glue that is translucent to light green having a predetermined brightness in the image, the part of fine foreign matter that is translucent to black, Recognize the bright and translucent low-concentration salt water part and the hand part of the worker who is working. If the transmittance data of both the blue paste and the foreign matter is acquired in advance and this transmittance is set as a threshold value, for example, a belt type color sorter disclosed in JP-A-08-252542, JP-A-2016-71675 According to many conventional techniques relating to image discrimination, such as the roller trace detection method disclosed in JP-A No. 2004-133, fine foreign matter determination can be performed. As described above, image analysis for foreign matter determination is disclosed in many conventional techniques, and thus detailed description thereof is omitted.

  As described above, the position information of the image of the fine foreign matter that has been black and has been translucently identified with the light transmittance as a threshold is specified as a time function because the endless belt 10 is rotating endlessly at a predetermined speed. Next, the image position information of the specified fine foreign matter is sent to a mirror control unit (not shown) that controls the angle of the movable reflecting mirror 33. The movable reflecting mirror 33 reflects the laser beam from the laser pointer 32 and can irradiate the arbitrary position on the endless belt 10 with the laser beam. Based on the image position information of the fine foreign matter, the laser light is circulated and irradiated in order to visually alert the operator of the location of the fine foreign matter corresponding to the pinpoint.

  It is assumed that 20 fine foreign objects are simultaneously recognized from the image data on the endless belt 10 at a certain time. These 20 pieces of position information are subjected to image analysis by an image control unit (not shown) and sent to the mirror control unit of the movable reflecting mirror 33. Based on this, the movable reflecting mirror 33 is driven, and the laser light is circulated and irradiated to the 20 fine foreign matters for each fine foreign matter. The operator recognizes the position of the fine foreign matter by the irradiated laser light, and the worker manually removes the fine foreign matter at the position irradiated with the laser light. If the minimum time for which the human eye can recognize the reflected laser light comfortably is 0.2 seconds, it takes about 4 seconds for all 20 fine foreign objects. Is done. Of course, since some of the fine foreign matters have been removed by the operator in the meantime, naturally the laser irradiation is not performed at the removed position in the next circulation irradiation. In addition, the free-floating blue glue is newly supplied from the tank 50 together with the salt water onto the belt, and new image data is newly generated as described above. Light is reflected and irradiated cyclically. If the endless rotating belt 10 having a length of about 2M is set to rotate from the most upstream to the most downstream in about 20 seconds, if one circulation irradiation is set to 4 seconds as described above, one minute foreign matter is formed. On the other hand, since a maximum of five times of laser light is irradiated, the operator can visually recognize the presence of the fine foreign matter a plurality of times. The imaging and image analysis cycle described above is related to the speed of the operator's fine foreign matter removal work, but may be an imaging cycle that can sufficiently remove the fine foreign matter at the most downstream side of the endless rotating belt 10. . These series of controls are all performed by program processing, and many conventional techniques can be used, and those skilled in the art can easily configure them.

(Third embodiment)
A fine foreign matter removing system 100 according to the third embodiment shown in FIG. 6 is equipped with a small working robot arm 40 in the vicinity of the belt in addition to the optical device 30 in the space above the belt. The tip of the robot arm 40 is equipped with a spot foreign matter removing function. The spot foreign matter removing function has a structure in which, for example, the suction port 41, the air discharge port 42, the fine tweezers 43, and the like can be replaced and mounted.

  In the second embodiment, the fine foreign matter specified by the position information of the fine foreign matter recognized by the image analysis is manually removed by the operator, whereas the fine foreign matter removal system according to the third embodiment is used. In 100, the robot arm 40 is used to remove fine foreign matter. That is, the spot-like position information of the fine foreign object once determined to be a foreign object is sent to a robot arm control unit (not shown), and the small robot arm 40 having a spot foreign object removal function is driven at high speed to obtain the position information. Based on this, fine foreign matters in a static wet state are removed from the water film at that position. Of course, this position information is specified as a time function because the endless belt 10 rotates endlessly at a predetermined speed, as in the second embodiment. Normally, most of the coarse and foreign particles have already been removed from the blue algae raw algae by the previous treatment, and the actual condition is that only the fine particles of several millimeters or less are found in the present invention. is there. Even with such fine foreign matter, the fine foreign matter is translucent to black so that it can be clearly distinguished from the blue paste that is translucent to light green by LED irradiation. The spot position information of minute foreign matter that is less than several millimeters is input to the robot controller as the drive position information of the robot arm according to the prior art. It is possible to instantaneously remove foreign substances in a static and moist state in the water film with a very simple configuration. The size of the “spot” foreign matter removing function referred to here is a size sufficient to suck the fine foreign matter having the above-mentioned size of several millimeters. Also, since the suction port is large, even if the leaf body of the blue paste around the fine foreign matter is sucked at the same time, the waste of the cost of the leaf body of the blue paste itself is negligible as a whole. The specific configuration itself of the robot arm 40 is based on the existing technology, so the details are omitted here. Further, instead of the suction port 41, an air discharge port 42 may be provided, and fine foreign matter may be blown off in a spot manner with compressed air, or fine tweezers 43 may be attached.

  Thus, unlike the conventional blue paste in which fine foreign matter is mixed, the fine foreign matter removal system 100 according to the first to third embodiments also removes fine foreign matter manually or attaches it to the robot arm 40 instantaneously. The blue paste after being removed by the spot suction function is subjected to a dehydration process and a drying process in the same manner as a normal blue paste manufacturing process, and is commercialized as a blue paste from which fine foreign matters have been removed. The dried blue paste is packaged as a blue paste that has become a dry block in which a plurality of leaf bodies are polymerized indefinitely.

  Since the seaweed thrown into the low-concentration salt water tank 50 floats freely in the low-concentration salt water (less than 0.6%), the foreign matter confined in the seaweed lump is also diffused together with the blue leaf leaves, and the LED emits light. It becomes easy to remove on the sorting conveyor 1. For this reason, since the consumer does not need manual work for removing the fine foreign matter, the product value can be improved. In addition, although the above was described about the blue paste, naturally, if the same foreign material removal is performed in the manufacturing process of a board laver or a seaweed laver, the commercial value can be further improved.

DESCRIPTION OF SYMBOLS 100 Fine foreign material removal system 1 LED light emission selection conveyor 10 Endless rotation belt 11 Shift pedal 12 Blue paste automatic supply part 20 LED light emission device 30 Optical device 31 Imaging device 32 Laser pointer 33 Movable reflection mirror 40 Small robot arm for work 41 Suction port 42 Exit 43 Tweezers 50 Low-concentration salt water tank 70 Highly transparent blue paste (light green)
80 Fine foreign material with low transmissivity (black)
90 Collection dredging

Claims (10)

Blue seaweed algae collected from the blue seaweed aquaculture net are immersed in low-concentration salt water to allow free suspension of the blue seaweed and fine impurities. In the fine foreign matter removal system that removes fine foreign matter,
The low-concentration salt water in which the blue paste from which the coarse foreign matter has been removed is poured into low-concentration salt water and allowed to float freely, and the leaves of the blue paste and the fine foreign matter remaining in the blue paste are separated to keep them both free-floating. It is composed of a tank (50) and a light sorting conveyor (1) disposed in the vicinity of the tank,
The light sorting conveyor (1)
The blue paste leaves taken from the low-concentration salt water tank (50) and a certain amount of low-concentration salt water in which the remaining fine foreign substances float freely float to form a water film having a constant thickness and diffused in the water paste. An endless rotating belt (10) that keeps the leaves and fine foreign matter in a stationary and moist state;
A light emitting device (20) that performs planar irradiation with a constant intensity through the water film from the bottom of the water film,
Due to the difference in transmissivity between the leaves of the blue paste kept in a static and moist state in the water film and the fine foreign matter, it is possible to visually check the translucent afterglow of the fine foreign matter with a brightness different from that of the blue paste. A blue paste fine foreign matter removing system (100) characterized by being configured.   The system according to claim 1, further comprising a shift pedal (11) that allows an operator to freely adjust the rotation speed of the light sorting conveyor (1).   An automatic supply unit (12) for automatically supplying a predetermined amount of blue glue from the low-concentration salt water tank (50) to the most upstream side of the endless rotating belt (10) at a predetermined time interval by a pump is provided. The blue foreign substance removing system (100) according to claim 1. Furthermore, an optical device (30) is provided in the upper space of the light sorting conveyor (1), and the optical device is a leaf body of blue glue that is in a stationary and wet state in a water film of low-concentration salt water that has been thinly diffused on the belt. An imaging device (31) for always imaging
The image data of the imaged image is analyzed and the leaf part of the blue paste that is translucent to light green with a predetermined brightness, the part of the fine foreign matter that is translucent to black, the lightly translucent low-concentration salt water part, And the control part which acquires each transmittance | permeability data of the part of the hand of the worker who is working beforehand, recognizes each as the threshold value, and acquires each image position information,
The laser beam from the laser pointer (32) is reflected with respect to the image position information of the fine foreign matter that is black and translucent, and the laser beam is circulated to the plurality of fine foreign matters on the endless rotating belt (10). Consisting of a movable reflecting mirror (33) possible,
2. The system for removing fine foreign substances of blue paste according to claim 1, wherein the system is configured to visually alert an operator of the presence of fine foreign substances corresponding to a pinpoint by laser light.   Further, a small work robot arm (40) is provided in the vicinity of the light sorting conveyor (1), a spot foreign matter removing function is provided at the end of the arm, and the robot arm is driven based on the image position information of the fine foreign matter. The system according to claim 4, wherein fine foreign matter is removed by the foreign matter removing function.   The foreign matter removing function is configured by any one of a suction port (41) for sucking fine foreign matter in a spot, a discharge port (42) for spotting compressed air, or a fine tweezers (43). The system for removing fine foreign substances of blue paste according to claim 5. Blue seaweed algae collected from the blue seaweed aquaculture net are immersed in low-concentration salt water to allow free suspension of the blue seaweed and fine impurities. In the blue paste fine foreign matter removal method to remove fine foreign matter,
Putting the blue paste from which the coarse foreign matter has been removed into low-concentration salt water to freely float, separating the leaves of the blue paste and the fine foreign matter remaining in the blue paste, and keeping both in a free-floating state; ,
Forming a water film on the translucent rotating belt that diffuses horizontally in a certain thickness with the low-concentration salt water containing the leaf body of the blue paste in a free floating state and the fine foreign matter remaining in the blue paste;
A flat irradiation with a constant intensity is performed from the lower part of the water film formed on the translucent rotating belt, and due to the difference in the transmissivity of the leaves of blue glue and fine foreign matters kept in a static and moist state in the water film, A method for removing fine foreign matter from blue paste, comprising: allowing the fine foreign matter to be visually confirmed by causing the fine foreign matter to have a translucent afterglow with a lightness different from that of the blue paste. Instead of the visual confirmation, the step of always imaging the leaves and fine foreign matter of the blue paste kept in a stationary wet state in the water film irradiated with a flat surface from the lower part,
The image data of the imaged image is analyzed and the leaf part of the blue paste that is translucent to light green with a predetermined brightness, the part of the fine foreign matter that is translucent to black, the lightly translucent low-concentration salt water part, And acquiring the transmittance data of the part of the hand of the worker who is working in advance, obtaining a plurality of positional information of the fine foreign matter that has been translucent black after setting the transmittance as a threshold,
Based on the position information of the fine foreign matter that is black and light-transparent, a laser beam is circulated to the plurality of fine foreign matters that are black and light-transparent, and the laser beam corresponds to a pinpoint for the operator. 8. The method for removing fine foreign matter from blue paste according to claim 7, comprising the step of visually alerting the position where the fine foreign matter exists.   Furthermore, the robot arm is driven based on the position information of the fine foreign matter that is black and translucent, and the fine foreign matter is spot-removed by the foreign matter removing function attached to the tip of the robot arm. The method for removing fine foreign substances from blue paste according to claim 8. A blue paste from which fine foreign matter has been removed, which has been dried after the fine foreign matter has been removed by the fine foreign matter removing method according to any one of claims 7 to 9.