Raw seaweed foreign object separator

Abstract

To provide a foreign matter separation device for raw laver enabling separation and removal of a foreign matter being elongated and stringlike which is mixed in a raw laver mixed liquid.SOLUTION: A foreign matter separation device for raw laver includes: a foreign matter separating tank 2 into which a raw laver mixed liquid being a mixture of raw laver and water is poured and which has a circular opening in a foreign matter separating tank bottom face 2e; and a rotary disk 5 which forms an annular clearance 4 between itself and an inner peripheral edge of the opening and provided in the opening. The foreign matter separation device for raw laver suctions the raw laver mixed liquid downward relative to the foreign matter separating tank through the clearance, the raw laver mixed liquid flowing in the foreign matter separating tank by rotating the rotary disk, and separates a foreign matter that is not allowed to pass through the clearance. Foreign matter removing tools 10 and 15 that tangle and catch the foreign matter while the raw laver mixed liquid is flowing in the foreign matter separating tank are provided upward in a protruded manner from the foreign matter separating tank bottom face, are provided upward in a protruded manner from the rotary disk, or are provided upward in a protruded manner from the foreign matter separating tank bottom face and are provided in a protruded manner from the rotary disk.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This invention relates to a foreign matter separation device for raw laver, which is a mixed liquid of raw laver (the original alga of laver) and water (seawater) subjected to foreign matter separation treatment. The device includes a foreign matter separation tank having a circular opening at the bottom surface of the foreign matter separation tank, which is the lower side in the vertical direction, and a rotating disk rotatably disposed in the opening by forming an annular clearance in plan view between the inner peripheral edge of the opening. When the rotating disk rotates in the opening, the raw laver mixed liquid flowing in the foreign matter separation tank is sucked downward from the foreign matter separation tank through the clearance, and foreign matters that cannot pass through the clearance are separated.

[0002] Particularly, the present invention relates to a foreign matter separation device for raw laver that enables separation and removal of long and thin filamentous foreign matters mixed in the raw laver mixed liquid while the raw laver mixed liquid is flowing in the foreign matter separation tank.

Background Art

[0003] Regarding a foreign matter separation device for raw laver, which is a mixed liquid of raw laver (the original alga of laver) and water (seawater) subjected to foreign matter separation treatment. The device includes a foreign matter separation tank having a circular opening at the bottom surface of the foreign matter separation tank, which is the lower side in the vertical direction, and a rotating disk rotatably disposed in the opening by forming an annular clearance in plan view between the inner peripheral edge of the opening. When the rotating disk rotates in the opening, the raw laver mixed liquid flowing in the foreign matter separation tank is sucked downward from the foreign matter separation tank through the clearance, and foreign matters that cannot pass through the clearance are separated. Various proposals have been made in the past. The applicant of the present application has also made some proposals (for example, Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Among the foreign matters mixed in the above-described raw laver mixture, there may be included long and thin filamentous foreign matters generated by the cutting or loosening of ropes, cords, nets, etc. used for laver cultivation nets in laver cultivation farms.

[0006] Therefore, an object of the present invention is to provide a foreign matter separation device for raw laver that enables separation and removal of long and thin filamentous foreign matters mixed in a raw laver mixture from the raw laver mixture while the raw laver mixture is flowing in a foreign matter separation tank.

Means for Solving the Problems

[0007] The present invention can be exemplified as follows. 〔1〕 A raw laver mixture, which is a mixture of raw laver and water to which foreign matter separation treatment is applied, is introduced, a foreign matter separation tank having a circular opening at the bottom surface of the foreign matter separation tank on the lower side in the vertical direction, A rotating disk rotatably disposed in the opening by forming an annular clearance in a plan view between the inner peripheral edge of the opening, and provided with, By the rotation of the rotating disk in the opening, the raw laver mixture flowing in the foreign matter separation tank is sucked downward from the foreign matter separation tank through the clearance, and a foreign matter separation device for raw laver that separates foreign matters that cannot pass through the clearance, A foreign matter removing tool that entangles long and thin filamentous foreign matters mixed in the raw laver mixture while the raw laver mixture is flowing in the foreign matter separation tank is Projected upward from the bottom surface of the foreign matter separation tank or, Projected upward from the rotating disk or, Projecting upward from the bottom surface of the foreign matter separation tank and also projecting upward from the rotating disk Apparatus for separating foreign matter from raw laver

[0008] 〔2〕 The bottom surface of the foreign matter separation tank where the foreign matter removing tool projects is composed of a ring-shaped member with a flat upper surface that forms a part of the bottom surface of the foreign matter separation tank and surrounds the opening. The clearance is formed between the inner peripheral edge of the ring-shaped member that forms the inner peripheral edge of the opening and the outer peripheral edge of the rotating disk. The apparatus for separating foreign matter from raw laver according to 〔1〕

[0009] 〔3〕 The apparatus for separating foreign matter from raw laver according to [1] or [2], wherein the size of the clearance in the radial direction of the rotating disk is 0.7 mm to 1.0 mm

[0010] 〔4〕 The foreign matter removing tool is composed of a small-diameter columnar portion projecting upward from the bottom surface of the foreign matter separation tank and / or the rotating disk. The apparatus for separating foreign matter from raw laver according to 〔1〕or [2]

[0011] 〔5〕 The apparatus for separating foreign matter from raw laver according to 〔4〕, wherein an upper end portion having a diameter larger than that of the columnar portion is formed on the columnar portion

[0012] 〔6〕 The apparatus for separating foreign matter from raw laver according to [5], wherein the distance between the upper end portion and the bottom surface of the foreign matter separation tank and / or the distance between the upper end portion and the rotating disk is 0.3 mm to 5.0 mm

Advantages of the Invention

[0013] According to this invention, it is possible to provide an apparatus for separating foreign matter from raw laver that can separate and remove long and thin filamentous foreign matter mixed in the raw laver mixture while the raw laver mixture is flowing in the foreign matter separation tank

[0014] Also, a raw laver mixture, which is a mixture of raw laver (the original alga of laver) to which foreign matter separation treatment is applied and water (seawater), is introduced. The foreign matter separation device for raw laver includes a foreign matter separation tank having a circular opening at the bottom surface of the foreign matter separation tank, which is the lower side in the vertical direction, and a rotating disk rotatably disposed in the opening by forming an annular clearance in a plan view between the inner peripheral edge of the opening and the rotating disk. When the rotating disk rotates in the opening, the raw laver mixture flowing in the foreign matter separation tank is sucked downward from the foreign matter separation tank through the clearance, and foreign matter that cannot pass through the clearance is separated. When using a foreign matter separation device for raw laver in which the size of the clearance in the radial direction of the rotating disk is about 0.70 mm to 1.00 mm, even when separating relatively large foreign matter from the raw laver mixture, it is possible to prevent, in advance, the occurrence of contamination by long, thread-like foreign matter generated by the cutting or loosening of ropes, cords, nets, etc. used in seaweed cultivation nets in seaweed farms in the raw laver mixture after the foreign matter separation treatment by suction through the clearance.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0016] Embodiments of the present invention will be described below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below and can be variously modified within the technical scope understood from the description of the claims.

[0017] FIG. 1 is a cross-sectional view, with a part omitted, for explaining the overall configuration of a foreign matter separation device for raw laver according to an embodiment of the present invention.

[0018] The foreign matter separation device 1 for raw laver includes a foreign matter separation tank 2 and a rotating disk 5. Hereinafter, the "foreign matter separation device 1 for raw laver" may be simply referred to as the "foreign matter separation device 1".

[0019] In the illustrated embodiment, the foreign matter separation tank 2 includes side walls 2a, 2b, 2c, 2d and a foreign matter separation tank bottom surface 2e disposed on the lower side in the vertical direction (FIGS. 1, 2, and 3). A mixed liquid of raw laver (the original algae of laver) and water (for example, seawater), which is transferred through the raw laver mixed liquid transfer pipe 20, is introduced into the foreign matter separation tank 2 formed by the foreign matter separation tank bottom surface 2e and the side walls 2a, 2b, 2c, 2d as indicated by the arrow 30, and foreign matter separation processing is performed on the raw laver mixed liquid in the foreign matter separation tank 2.

[0020] In the illustrated embodiments of FIGS. 1, 2, and 3, the foreign matter separation tank bottom surface 2e has a circular opening at its center. In the embodiment illustrated in FIG. 1, the opening is defined by a ring-shaped member 3 whose upper surface is flat and forms a part of the foreign matter separation tank bottom surface 2e. As shown in FIGS. 2 and 3, the circular opening disposed at the center of the foreign matter separation tank bottom surface 2e is formed inside the ring-shaped member 3.

[0021] As shown in FIGS. 1 to 4, a rotating disk 5 is rotatably disposed in this opening. An annular clearance 4 is formed in a plan view between the inner peripheral edge of the circular opening formed in the foreign matter separation tank bottom surface 2e and the outer peripheral edge of the rotating disk 5 as shown in FIGS. 1, 2, and 3.

[0022] In the illustrated embodiment, as shown in FIGS. 2 and 3, the circular opening provided at the center of the bottom surface 2e of the foreign matter separation tank is formed inside a ring-shaped member 3 whose upper surface is flat and forms a part of the bottom surface 2e of the foreign matter separation tank. Therefore, the annular clearance 4 in plan view is formed between the inner peripheral edge of the ring-shaped member 3 and the outer peripheral edge of the rotating disk 5.

[0023] The upper surface of the rotating disk 5 and the upper surface of the bottom surface 2e of the foreign matter separation tank are located at substantially the same height as shown in FIG. 1, and a flat bottom surface that extends horizontally in the foreign matter separation tank 2 is formed by the upper surfaces of the rotating disk 5 and the bottom surface 2e of the foreign matter separation tank as a whole.

[0024] As shown in FIG. 1, a suction chamber 7 is provided below the foreign matter separation tank 2, and a suction pump 9 is connected to the suction chamber 7 via a feed pipe 8a.

[0025] When the rotating disk 5 receives the driving force from the driving means 6 and rotates in the circular opening formed in the bottom surface 2e of the foreign matter separation tank as indicated by reference numeral 31 in FIG. 1, the raw laver mixed liquid contained in the foreign matter separation tank 2 also flows in the direction indicated by arrow 31 in the foreign matter separation tank 2 along with the rotation of the rotating disk 5. The rotating disk 5 rotates at a rotational speed of about 50 to 600 revolutions per minute, although it depends on the size of its diameter.

[0026] Here, when suction is performed by the suction pump 9, the raw laver mixed liquid flowing in the direction of arrow 31 in the foreign matter separation tank 2 while the rotating disk 5 rotates in the circular opening formed in the bottom surface 2e of the foreign matter separation tank as indicated by reference numeral 31 in FIG. 1 is sucked downward from the foreign matter separation tank 2 through the clearance 4. As a result, as shown in FIG. 1, the raw laver mixed liquid is sucked into the suction chamber 7 through the clearance 4 as indicated by arrow 32, and further fed to the outside of the foreign matter separation device 1 through the feed pipes 8a and 8b as indicated by arrows 33 and 34.

[0027] The raw laver mixed liquid is transferred through the transfer pipe 20 of the raw laver mixed liquid and is put into the foreign matter separation tank 2 as shown by the arrow 30, and in the raw laver mixed liquid that undergoes the above-described foreign matter separation process, there may be included long and thin filamentous foreign matters generated by the ropes, cords, nets, etc. used in the laver cultivation nets of the laver cultivation farms being cut or loosened.

[0028] The foreign matter separation device 1 of this embodiment is provided with a foreign matter remover that entangles such long and thin filamentous foreign matters mixed in the raw laver mixed liquid while the raw laver mixed liquid is flowing as described above in the foreign matter separation tank 2.

[0029] The foreign matter separation device 1 shown in FIG. 1 is provided with a foreign matter remover 15 protruding upward from a ring-shaped member 3 forming a part of the bottom surface 2e of the foreign matter separation tank, and a foreign matter remover 10 protruding upward from the rotating disk 5.

[0030] As described above, since the rotating disk 5 rotates in the direction indicated by the arrow 31 and accordingly the raw laver mixed liquid also flows in the direction indicated by the arrow 31, the long and thin filamentous foreign matters mixed in the raw laver mixed liquid are caught by the foreign matter remover 15 protruding upward from the ring-shaped member 3 and the foreign matter remover 10 protruding upward from the rotating disk 5, entangled, and separated and removed from the raw laver mixed liquid.

[0031] The raw laver (the original alga of laver) contained in the raw laver mixed liquid may also be caught by the foreign matter removers 10 and 15 and entangled, but due to the softness and properties of the raw laver (the original alga of laver), it is cut and the like by the foreign matter removers 10 and 15, and rather than the raw laver (the original alga of laver) contained in the raw laver mixed liquid being caught by the foreign matter removers 10 and 15 and entangled, the above-described long and thin filamentous foreign matters are more likely to be caught by the foreign matter removers 10 and 15 and entangled.

[0032] The above-mentioned long and slender filamentous foreign objects are generated when ropes, cords, nets, etc. used in nori aquaculture nets in nori aquaculture farms are cut or loosened. Therefore, after being caught by the foreign object removers 10 and 15, they will not be cut and detached from the foreign object removers 10 and 15, but will be entangled by the foreign object removers 10 and 15.

[0033] The foreign object removers 10 and 15 only need to be able to perform such functions. For example, a small-diameter columnar portion protruding upward from the ring-shaped member 3 or the rotating disk 5 can be adopted as the foreign object removers 10 and 15. Examples of the small-diameter columnar portion include a small-diameter wire-like member and a small-diameter rod-like member.

[0034] As described above, since it catches and entangles long and slender filamentous foreign objects, the diameter of the small-diameter columnar portion can be about 1.0 mm to 10 mm. Also, the length and height of the small-diameter columnar portion protruding upward from the ring-shaped member 3 or the rotating disk 5, as described above, from the viewpoint of preventing the long and slender filamentous foreign object from being caught by the small-diameter columnar portion and the long and slender filamentous foreign object caught by the columnar portion from falling off from the upper end of the columnar portion, can be, for example, about 0.3 mm to 10 mm, preferably about 0.5 mm to 7 mm.

[0035] The embodiment shown in FIG. 1 represents a foreign object separation device 1 including a foreign object remover 15 protruding upward from a ring-shaped member 3 forming a part of the bottom surface 2e of the foreign object separation tank and a foreign object remover 10 protruding upward from a rotating disk 5.

[0036] As described above, the rotating disk 5 rotates in the direction indicated by the arrow 31, and accordingly, the raw laver mixture accommodated in the foreign matter separation tank 2 flows in the direction indicated by the arrow 31. Under the flow condition that this flowing raw laver mixture is sucked downward from the foreign matter separation tank 2 through the clearance 4 as indicated by the arrow 32 (Fig. 1), the long and thin filamentous foreign matter mixed in the raw laver mixture is caught by the foreign matter removing tools 15 and 10 and entangled. Therefore, the position where the foreign matter removing tool is provided in the foreign matter separation tank 2 is not limited to the form shown in Fig. 1.

[0037] Fig. 2 shows an embodiment in which the foreign matter removing tool is provided only on the rotating disk 5. In Fig. 2(a), two foreign matter removing tools 10a and 10b projecting upward from the upper surface 5a of the rotating disk 5 are symmetrically arranged with respect to the diameter. In Fig. 2(b), four foreign matter removing tools 10a, 10b, 10c, and 10d projecting upward from the upper surface 5a of the rotating disk 5 are symmetrically arranged with respect to the diameter.

[0038] Under the flow condition of the raw laver mixture as described above, since the long and thin filamentous foreign matter mixed in the raw laver mixture is caught by the foreign matter removing tool and entangled, in the embodiment in which the foreign matter removing tool is provided only on the rotating disk 5, although not shown in Fig. 2, it can be an embodiment in which only one foreign matter removing tool projects upward from the rotating disk 5.

[0039] Fig. 3(a) shows an embodiment in which the foreign matter removing tool is not provided on the rotating disk 5, but is provided only on the ring-shaped member 3 that forms a part of the bottom surface 2e of the foreign matter separation tank. Two foreign matter removing tools 15a and 15c projecting upward from the upper surface 3a of the ring-shaped member 3 are symmetrically arranged with respect to the diameter.

[0040] Under the flow condition of the raw laver mixed liquid as described above, since the long and thin filamentous foreign matter mixed in the raw laver mixed liquid is caught by the foreign matter removing tool and entangled, in an embodiment where the foreign matter removing tool is only provided on the ring-shaped member 3 that forms a part of the bottom surface 2e of the foreign matter separation tank, although not shown in FIG. 3, the foreign matter removing tool protruding upward from the ring-shaped member 3 can be an embodiment where there is only one.

[0041] Also, although not shown, an embodiment can be adopted in which one or a plurality of foreign matter removing tools protruding upward from the bottom surface 2e of the foreign matter separation tank are provided on the bottom surface 2e of the foreign matter separation tank that is on the outer side in the radial direction of the ring-shaped member 3.

[0042] FIG. 3(b) shows an example of an embodiment in which foreign matter removing tools are provided on both the rotating disk 5 and the ring-shaped member 3 that forms a part of the bottom surface 2e of the foreign matter separation tank. In FIG. 3(b), two foreign matter removing tools 10c and 10d protruding upward from the rotating disk 5 are symmetrically arranged in a diameter direction, and two foreign matter removing tools 15b and 15d protruding upward from the ring-shaped member 3 that forms a part of the bottom surface 2e of the foreign matter separation tank are symmetrically arranged in a diameter direction.

[0043] The foreign matter removing tools provided on the rotating disk 5 and the ring-shaped member 3 can be one by one, or instead of the foreign matter removing tools being provided on the ring-shaped member 3, an embodiment can be adopted in which one or a plurality of foreign matter removing tools protruding upward from the bottom surface 2e of the foreign matter separation tank are provided on the bottom surface 2e of the foreign matter separation tank that is on the outer side in the radial direction of the ring-shaped member 3.

[0044] FIGS. 4 and 5 show an example of an embodiment of the foreign matter removing tools 10 and 15 composed of small-diameter columnar parts. In the embodiment shown in FIG. 4, as illustrated in FIG. 5, the foreign matter removing tool 10 is a small-diameter columnar part 12 protruding upward from the ring-shaped member 3 and the rotating disk 5, and an upper end part 11 having a diameter larger than that of the columnar part 12 is formed on the columnar part 12.

[0045] In the embodiments shown in FIGS. 4 and 5, since the upper end portion 11 having a diameter larger than that of the columnar portion 12 is formed on the columnar portion 12 with a small diameter, it is advantageous because it is possible to prevent the long and thin thread-like foreign matter caught on the columnar portion 12 from falling off from the upper end of the columnar portion 12.

[0046] The foreign matter removing tool 10 in the form shown in FIGS. 4 and 5 can be configured to be attached to the perforations formed in the ring-shaped member 3 and the rotating disk 5, for example, through a thread portion 13 which is a portion continuously extending downward from the columnar portion 12 with a small diameter and a thread 14 formed on the outer periphery of the thread portion 13.

[0047] In the case of the foreign matter removing tool 10 in the form shown in FIGS. 4 and 5, the distance L (FIG. 5) between the upper end portion 11 of the foreign matter removing tool 10 and the upper surface of the rotating disk 5 (or the upper surface of the ring-shaped member 3), that is, the distance between the upper end portion 11 having a diameter larger than that of the columnar portion 12 and the bottom surface 2e of the foreign matter separation tank, and the distance between the upper end portion 11 and the rotating disk 5 can be set to be about 0.3 mm to 5.0 mm, for example, from the viewpoint of preventing the long and thin thread-like foreign matter from being caught on the columnar portion 12 and the long and thin thread-like foreign matter caught on the columnar portion 12 from falling off from the upper end of the columnar portion 12.

Industrial Applicability

[0048] The raw laver foreign matter separation device 1 according to the present invention described in the above-described embodiment is used mainly for subjecting a raw laver mixed liquid in which raw laver (raw laver) and water (seawater) are mixed, which is obtained by cutting and collecting from a laver cultivation net in a laver cultivation farm and adjusting to a predetermined length by performing rough cutting treatment or the like, to a foreign matter separation treatment, and separating and removing foreign matters (for example, garbage such as straw scraps, amies, shrimp insects, synthetic resin pieces, fragments of crustaceans, etc.) contained in the raw laver mixed liquid by the above-described clearance 4.

[0049] Therefore, the size of the clearance 4 in the radial direction of the rotating disk 5 is set to a minute gap of about 0.10 mm to 0.20 mm, thereby separating and removing the above-mentioned minute foreign matters mixed in the raw laver mixture.

[0050] By the way, in the foreign matter separation process of raw laver using the foreign matter separator 1 of the present invention described in the above-described embodiment, the main purpose may be to separate and remove foreign matters of a larger size from the raw laver mixture. This is a foreign matter separation process sometimes called rough dust removal process, large rough foreign matter separation process, etc., which separates and removes foreign matters of a larger size from the raw laver mixture.

[0051] In the case of such a large rough foreign matter separation process, the size of the clearance 4 in the radial direction of the rotating disk 5 becomes a width of about 0.70 mm to 1.00 mm.

[0052] The above-mentioned long and thin filamentous foreign matters generated by the ropes, cords, nets, etc. used in the laver cultivation nets of the laver farm being cut or loosened will pass through the clearance 4 with a width of about 0.70 mm to 1.00 mm.

[0053] Therefore, in the raw laver mixture after performing a foreign matter separation process such as a rough dust removal process and a large rough foreign matter separation process with the size of the clearance 4 in the radial direction of the rotating disk 5 being about 0.70 mm to 1.00 mm, the above-mentioned long and thin filamentous foreign matters may remain.

[0054] The raw laver mixture after the foreign matter separation process with suction through the clearance 4, even after the above-mentioned rough dust removal process and large rough foreign matter separation process, may subsequently be prepared into a product (product) provided to the market through a predetermined processing step. At this time, if the long and thin filamentous foreign matters remain as described above, the long and thin filamentous foreign matters will be mixed into the product (product), which will significantly reduce the product value.

[0055] The foreign matter separation device 1 of the above-described embodiment according to the present invention sets the size of the clearance 4 in the radial direction of the rotating disk 5 to about 0.70 mm to 1.00 mm, and performs foreign matter separation processes such as large rough dust removal processing and large rough foreign matter separation processing. It is effective in preventing the above-described long and thin thread-like foreign matter from remaining in the raw laver mixed liquid after the foreign matter separation process.

Claims

【Claim 1】 A nori mixture, which is a mixture of raw nori and water subjected to foreign matter separation treatment, is introduced into a foreign matter separation tank having a circular opening at the bottom surface of the foreign matter separation tank on the lower side in the vertical direction, and a rotating disk rotatably disposed within the opening, forming an annular clearance in plan view between the inner peripheral edge of the opening and the rotating disk, and comprising a foreign matter separation device for seaweed, wherein the rotating disk rotates within the opening to suck the nori mixture flowing in the foreign matter separation tank downward from the foreign matter separation tank through the clearance, separating foreign matter that cannot pass through the clearance, and the bottom surface of the foreign matter separation tank has a flat upper surface and includes a ring-shaped member that forms a part of the bottom surface of the foreign matter separation tank and surrounds the opening, and the clearance is formed between the inner peripheral edge of the ring-shaped member forming the inner peripheral edge of the opening and the outer peripheral edge of the rotating disk, and the size of the clearance in the radial direction of the rotating disk is 0.7 mm to 1.0 mm, and a foreign matter remover having an upper end portion with a diameter larger than the diameter of the columnar portion is formed on a columnar portion having a diameter of 1.0 mm to 10 mm, and is protruding upward from the bottom surface of the foreign matter separation tank, or is protruding upward from the rotating disk, or is protruding upward from the bottom surface of the foreign matter separation tank and also protruding upward from the rotating disk A foreign matter separation device for seaweed.

Images