KR101624943B1

KR101624943B1 - Artificial shell for oyster farming

Info

Publication number: KR101624943B1
Application number: KR1020140064333A
Authority: KR
Inventors: 김윤공
Original assignee: 김윤공
Priority date: 2014-05-28
Filing date: 2014-05-28
Publication date: 2016-05-27
Also published as: KR20150136821A

Abstract

In the present invention, when the oyster shell is separated from the artificial shell by separating the oyster shell, it is possible to increase the recycling rate by eliminating the damage of the artificial shell, to utilize the separated oyster shell for compost, to reduce the amount of plastic used and to use the oyster shell It is also an object of the present invention to provide an artificial shell for oyster cultivation which is environmentally friendly and can improve the productivity of oysters by increasing the seizure rate of oysters, prevent pollution of the oceans, and greatly increase strength and elasticity. To this end, the present invention relates to a thin disc member made of a plastic material having a convex curved surface at its center, A central penetrating member formed to protrude from a cylindrical concave surface having a circular hole such that a yarn string passes through the center of the disc member; Wherein a plurality of radial projections are formed radially from the central penetrating member toward the edge of the disc member so as to extend in a direction perpendicular to the disc member, Shaped ribs integrally formed on the outer wall surface and having a height lower toward the edge side of the disc member; And a plurality of rectangular or circular or rhomboidal drainage and up-and-down binding holes formed in a radial pattern with a width in the radial direction of 1/4 to 2/3 with respect to the radius of the disk member. .

Description

{Artificial shell for oyster farming}

The present invention relates to an artificial oyster shell for oyster cultivation. More particularly, the present invention relates to an artificial shell shell for oyster cultivation, which is simple in structure and easy to manufacture, is prevented from collapsing and dislodging due to collision with an adjacent artificial shell, The present invention relates to artificial shells for oyster cultivation which are environmentally friendly and cost-effective because they can be recycled.

Generally, in oyster culture, conventionally, young oysters (seedlings, seedlings) are attached to the scallop shell and cultured. At this time, the scallop shells are hung on approximately four consecutive rows of vertically connected shells, each of which is connected to the rope up and down in a row, so as to be submerged in seawater.

However, in order to connect the scallop shells with a rope, a drill hole must be drilled in the shell of the scallop, so that there is a problem that the shell is considerably troublesome. Further, in the process of connecting a plurality of scallop shells by a rope, it is necessary to form a knot after inserting each shell so as to be spaced apart from each shell by a predetermined distance in order to grow the seedlings.

In the meantime, the single-pipe type spacing member is inserted through the rope instead of the knot. However, this is a complicated method of putting the shell and the spacing member alternately in turn on a rope having a knot formed at one end, In the case where the separating member is not inserted in the middle, it is necessary to separate both the shell and the separating member so that the operation is considerably troublesome and the productivity of the finished product is deteriorated.

In addition, in the natural shell having the above-described nature, the scallop shell of the shell of one shell impinges between the scallop shells of the adjacent shell of the shell according to the flow of seawater, and strikes against the seeds attached to the shell of the other scallop, There is a problem of being damaged, and of course, falling off the shell. Furthermore, there is a problem that seawater or aquaculture is contaminated as the seedlings are released from the shell and are killed. In addition, when a knot or a spacing member is provided between the shells as described above, the spaced shells may collide with each other due to an external force such as a wave or a wale, so that the shell is broken or removed from the rope, There is also a problem that it is separated from the shell.

Then, when the four consecutive rows of shells each hanging from the shell are put into the seawater, the shells hanging from each successive string collide with each other due to the heavy flow of seawater, and the shells hanging from each successive string are tangled Respectively. In other words, in a process in which shells hanging so as to maintain a constant spacing on one line of consecutive lines are struck by hanging shells so as to maintain a constant spacing on the other draw line, the shells of one shell collide with each other at regular intervals formed between shells of the other shell, In addition to the problems that arise, the shells that have clenched back to their original position in the course of the seawater return to their original positions, and the shells collide with the seeds to damage the seeds, as well as the seeds that grow on the shells. do. In addition, when a knot or a spacing member is provided between the shells as described above, the spaced shells may collide with each other due to an external force such as a wave or a wale, so that the shell is broken or removed from the rope, There is also a problem that it is separated from the shell.

Another problem is that the supply of natural scallop shells, which have been used for shells in recent years, is not smooth and the price is raised, resulting in an increase in production cost of the shell. In particular, many diseases occur in the scallops cultivated due to global warming and the like, and as a result, scallops of a certain size required for oyster cultivation are being harvested as well as the production amount is greatly reduced. Therefore, it is difficult to obtain the scallop shell of a certain size that is absolutely necessary for the oyster aquaculture industry, and the supply price of scallop shells is continuously increasing. Such scallops shells are disposable and dispose of, so there is a problem of polluting the environment.

In view of this point, Korean Patent Laid-open Publication No. 10-2011-0117895 (titled artificial oyster shell for oyster cultivation) proposed an artificial oyster shell having a structure as shown in Figs. 1 and 2.

The artificial oyster shell of the structure shown in the figure has a plurality of sparse attachment plates 20 having a seed shell on one side and a through hole 21 at the center and a plurality of sparse attachment plates 20 And a rope (50) passing through the holes (21) and interconnecting a plurality of sparse attachment plates (20), wherein a plurality of shielding protrusions (26) are arranged on at least one side edge of the sparse attachment plate So that the end surface of the stopper protrusion 26 of the one side end stopper plate 20 is spaced from the adjacent side end stopper plate 20 to be spaced apart from each other.

Such an artificial oyster shell for oyster cultivation is simple in structure but easy to manufacture, and it is prevented that the seeds are damaged or dislodged by collision with the adjacent shell and collision within the same shell, and it is recyclable, However, the following unreasonableness still exists, despite the fact that the structure is improved.

The first is the recyclability issue. Once the oysters are harvested, the shells must be crushed to separate the oyster shell crumbs, the crumb string and the artificial shell. Separately, the artificial shell is broken in the crushing process, which interferes with the work or mixes some pieces to prevent composting. That is, in the case of the invention disclosed in the aforementioned prior patent, the gap holding portion 30 and the blocking protrusion 26 are protruded upward and downward, respectively, but they are inserted into a separator device including a pair of rollers, The breakage holding portion 30 and the blocking protrusion 26, which are the protrusions of the cylindrical body, are frequently broken by the strong pressing force by the rollers, so that the plastic body is mixed into the crushed oyster shell, There is a problem in that the shell can not be recycled. Also, even if the gap holding portion 30 and the blocking projection 26, which are cylindrically formed protrusions, are not broken, the projecting portion is inserted into the separation vent hole, And the operation of the separating device is frequently interrupted.

Second, the problem of oyster cultivation is that the dropout rate of the growth oyster is high. Growing oysters barely attached to the narrow surface of oyster shells or scallop shells are eliminated due to external impacts or other direct or indirect effects of water flow, resulting in reduced yields and sea pollution. In the case of the artificial shell of the type shown in the figure, there is no specially provided structure for reliable attachment of the oysters, and a plurality of holes are formed on the concave surface, And thus it does not help securing the mutual bonding strength of the oysters growing on both upper and lower surfaces of the artificial shell. Therefore, it is urgently necessary to prevent the oyster shells from falling off and polluting the oceans.

Third, as the nature of all natural things is the same, the material of the same quality is favorable to maintain the affinity, but the artificial shell is made of plastic as the main component, so that the seeds and properties are different, resulting in a decrease in the survival rate of the seeds.

Fourth, since the sparse attachment plate 20 is formed of a simple curved surface, it is inevitable that the strength and elasticity are deteriorated when different kinds of materials are mixed in order to match the specific gravity.

Patent Document No. 10-2011-0117895 Patent Document No. 10-2011-0101583

Accordingly, the present invention has been made in view of the above points, and it is an object of the present invention to provide a method for separating oyster shells from an artificial shell to eliminate the damage of artificial shells, thereby increasing the recycling rate and utilizing oyster shells for composting, And an object of the present invention is to provide an artificial shell.

Another object of the present invention is to provide an oyster shell for oyster cultivation, which can improve the productivity of the oysters to improve the seizure rate, prevent contamination of the oceans, and greatly increase strength and elasticity.

To achieve the above object, an artificial oyster shell for oyster cultivation is provided with a thin disc member made of a plastic material having a convex curved surface at the center thereof, the thin disc member being provided to allow the oysters to adhere to each other, A central penetrating member formed to protrude from a cylindrical concave surface having a circular hole such that a yarn string passes through the center of the disc member; Wherein a plurality of radial projections are formed radially from the central penetrating member toward the edge of the disc member so as to extend in a direction perpendicular to the disc member, Shaped ribs integrally formed on the outer wall surface and having a height lower toward the edge side of the disc member; And a plurality of rectangular or circular or rhomboidal drainage and up-and-down binding holes arranged in a radial pattern and formed to have a width in the radial direction of 1/4 to 2/3 with respect to the radius of the disk member. .

According to a preferred embodiment of the present invention, the rib is formed to pass across the drainage and upper and lower binding holes.

According to the present invention, the protruding height of the center penetrating member coincides with the outer circumferential height of the disc member.

The artificial shell according to the present invention is prepared by using 50 to 70% by weight of polypropylene, 15 to 35% by weight of talc powder and 13 to 25% by weight of oyster shell powder, do.

According to the present invention, the cylindrical penetrating member protruding in a cylindrical shape is supported over the entire height thereof by the radially extending ribs, so that the ribs and the disc member are protected by the ribs and the disc member so that the strength is greatly increased, So that the central penetrating member does not break when it passes between the rollers of the separator in order to crush and separate the grown oyster shell attached to the surface for recycling after the oyster collection is completed Since the central penetrating member is not exposed to the outside of the disk member and the breaking force in the direction perpendicular to the central axis when passing through the roller for crushing the oyster shell is not received by the central penetrating member, , Oyster shells separated from the surface are used as compost materials because there is no mixing of plastic The artificial shell can be recycled for oyster cultivation, and it is excellent in environmental protection and recycling of resources. Also, it is not made of artificial shell with plastic only, but it is used together with stone powder and oyster shell It is possible to recycle oyster shells that are discarded as waste after harvesting, and it is eco-friendly. Especially, it is environmentally friendly. The use of oyster shells can significantly increase the rate of seedlings, thus enhancing productivity of oyster cultivation while seeking the environment.

Particularly, since the drainage and the upper and lower binding holes are formed to cross the ribs to serve as the support necks, it is possible to increase the up-down bonding force of the oysters and dramatically increase the excrement rate of the oysters and significantly reduce the dropout rates. (Or wave) shape to increase the self-elasticity and to increase the strength of the disk member. Therefore, it is possible to improve the productivity of the oyster without any cohesion It is possible to maintain elasticity even if the shell component is contained in a large amount without any problem in strength maintenance.

1 and 2 are views showing a conventional artificial shell for oyster cultivation.
3 is a front perspective view showing the artificial shell according to the present invention,
4 is a rear perspective view showing the artificial shell according to the present invention,
5 is a front view showing the artificial shell according to the present invention,
6 is a bottom view showing the artificial shell according to the present invention,
7 is a cross-sectional view of an artificial shell according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings in order to fully understand the present invention. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. Further, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the gist of the present invention are omitted, and may be described with reference to the conventional drawings, if necessary.

Hereinafter, the artificial shell for oyster culturing according to the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings.

FIG. 3 is a front perspective view showing the artificial shell according to the present invention, FIG. 4 is a rear perspective view showing the artificial shell according to the present invention, FIG. 5 is a front view showing the artificial shell according to the present invention, FIG. 7 is an AA cross-sectional view showing the artificial shell according to the present invention. FIG.

In the drawings, the artificial shell of the present invention will be described with reference to a front view of a circular plate shape which is seen from the upper part to the lower part when the artificial shell is continuously attached to the string and put into the sea.

In the drawings, the artificial oyster shell 60 as a whole of the oyster cultivation 60 indicated by reference numeral 60 is extruded using plastic injection molding or a material in which various inorganic additives are mixed with plastic as a main material, A thin disc member 61 having a radius of approximately 100 to 130 mm and having a curved surface whose center portion is convex (based on the shape viewed from the side under the actual use condition) provided at the center of the disc member 61, (See reference numeral 50 in Fig. 2), a cylindrical portion having a circular hole 62 passing through the center of the concave surface of the disc member 61, A center penetrating member 63 protruding to a height of approximately 8 to 12 mm as a height difference of the circular plate member 61, (63) to the edge of the disk member (61) so as to be installed in the direction of the center of the disk member (61), the center side of which is radially in the same direction as the projecting height of the projected central penetrating member (The oblique surface is a curved surface) having a vertex coinciding with the edge of the circular plate member 61. The ribs 61 are integrally formed on the outer wall surface of the member 63 so that the height becomes lower toward the edge side of the circular plate member 61, And a plurality of rectangular or circular or rhomboidal shapes arranged in a radial pattern so as to have a width or a diameter in a radial direction of 1/4 to 2/3 of the radius of the disk member 61 Drainage and upper and lower binding holes 65. [

Here, the present invention is applied to a string, so that it is convex upward in actual use, that is, it is used in the form as shown in FIG. 3. The reason why the string is used to be convex upward is that, When the movement occurs, it takes place on the curved surface of the upper part so that the seawater is smoothly passed over, so that less fluctuation is caused. Thus, friction and impact applied to the attached oysters are reduced to prevent oysters from falling off. When the shell 60 is exposed, if the water is accumulated on the upper surface, the strong sunlight action is caused and the oyster is killed.

The ribs 64 are formed on the back surface of the disc member 4 to 12, preferably 4 (preferably 4), which are symmetrical with respect to the geometrical symmetry, Six, eight, or twelve. In the embodiment of the present invention, twelve pieces are used at intervals of 30 degrees to secure sufficient strength and to surround the central penetrating member 63, and the central penetrating member The linear surface of the rib 64 that coincides with the end surface 66 of the disk member 61 (which is the lower surface in terms of the actual use state) extends horizontally to reach the vertex of the triangular shape, The center penetrating member 63 is designed to be accommodated in the horizontal plane of the disk member 61, that is, in the concave groove, so as not to deviate from the contour of the disk member 61. [

The drainage and the upper and lower binding holes 65 are formed by using the space between the ribs and the ribs 64, more preferably, as shown in FIG. And six ribs 64 are formed on the ribs 64 so as to have a floral pattern in a plan view.

In the above-mentioned drainage and upper and lower binding holes 65, in the case of the prior art (see FIGS. 1 and 2), the through holes 21 for the purpose of simply discharging the water, But in the case of the present invention, it has a width in the radial direction of 1/4 to 3/4 (or a diameter in the case of a circular hole) in comparison with the radius of the disk member 61, and a rectangular shape or a rhombic shape It is preferable that the width in the circumferential direction when forming the hole in the shape is about 1/2 to 1/3 of the width in the radial direction and it is preferable to form the hole so as to be larger than the holes 25 shown in FIG. The reason why the drainage and upper and lower binding holes 65 of the present invention are relatively much larger is that the oyster sticks to the upper and lower surfaces of the disk member 61 in addition to the drainage function of the seawater, The oysters communicate with each other And the ribs 64 as the thin plate member pass through the drainage and the upper and lower binding holes 65 at the center thereof While the oysters growing on both sides extend through the hole 65 and are bound to each other as one body, the oyster grows and binds the ribs 64 as a supporting tree, thereby remarkably increasing the excitation rate of the oysters, This is because the effect is remarkably lowered.

In addition, in the case of the prior art of FIG. 2, the gap holding portion 30 protrudes from the convex side, which causes the height of the entire height to rise. When the protrusion (not shown) passes between the roller separators for separating oyster shells However, in the present invention, the central penetrating member 63 protrudes to the concave portion and its height is covered with the height corresponding to the curvature of the disc member 61, It is not protruded beyond the contour range of the protrusion 61 and is protected and doubly protected by the ribs 64. Therefore, there is no possibility of breakage and the recycling rate can be remarkably increased.

The disc member 61 may be formed of a flat curved surface having a constant curvature. However, considering that a large amount of talc or oyster shell components having no cohesive force besides a plastic component is formed, the disc member 61 is formed in a wrinkle (or wavy) It is most preferable to configure such that it can be greatly increased.

Reference numeral 67 denotes an eject pin seat 67 which is pressed by the eject pin when the artificial shell 60 is detached from the mold. Reference numerals 68 and 69 denote protrusions formed along the edge of the hole 65 and the circular plate, When the projections 68 and 69 are formed in the periphery of the hole and in the periphery of the disk, the strength greatly increases, and the hole and the disk member The effect of preventing tearing or cracking of the edge of the oyster shell 60 is greatly increased and this ensures the strength that the artificial shell 60 is not damaged when it is put into the oyster crusher for recycling. And reference numeral 70 denotes an upper side protruding portion of the disc member 61 of the central penetrating member 63.

On the other hand, the artificial shell 60 of the present invention is prepared by mixing plastics as a main material, specifically 50 to 70% by weight of polypropylene, 15 to 35% by weight of talc powder and 13 to 25% by weight of oyster shell powder By injection molding.

The reason why the talc (stone powder) powder and the oyster shell powder are contained in producing the artificial shell of the present invention is as follows.

Polypropylene, a thermoplastic resin, has a specific gravity lower than that of water, so that it is not immersed in seawater by itself. Therefore, talc (powder of stone) is finely pulverized and mixed to increase the specific gravity and sink into seawater. It is not preferable to add more than 35%, because it increases the wear rate of the mold at the time of injection to shorten the service life and increase the maintenance cost.

The reason for including oyster shell powder in the above is that oyster cultivation has prospered in the south coast area of clean coastal area and the disposal of oyster shell waste left after oyster harvest has emerged as a serious problem. There is a problem that the oyster shells are wrapped like mountains in the coastal area because the fishermen are neglected through the coastal waters because they are costly to process. Therefore, by recycling the oyster shells thus abandoned, And the amount of plastic used can be reduced. In particular, oyster shells such as oysters are used as materials, which greatly increases the success rate of seeds.

The reason for limiting the content of the oyster shell powder to 25% or less is that the oyster shell is a main component of limestone, and if it is contained too much, the oyster shell reacts with other components and boils up, It is necessary to limit the amount of use, which is why they are mixed with talc at an appropriate ratio.

Example

Polypropylene 60 wt%

20 wt% of talc powder

Oyster shell powder 20 wt%

The mixture of talc and oyster shells was finely pulverized so as to have a particle size of about flour, mixed with PP and evenly stirred to prepare a mixture, and then the mixture was heated at a temperature higher than the melting point of PP, And then the raw material mixture was injected into the mold of the injection machine to produce an artificial shell having the shape and structure as shown in Fig. The proportion of this artificial shell was 1.05, and it was confirmed that it can be used for oyster cultivation because it has a characteristic that it does not go into seawater as a result of putting it in seawater taken from offshore Tongyeong where Hanryesu is located, . As a result of tensile strength test, it showed 95% level of pure PP.

In the foregoing, preferred embodiments of the present invention have been described herein, which is the best mode known to the inventors for carrying out the invention. It will be readily apparent to those skilled in the art that modifications of these preferred embodiments are possible from the foregoing description. The inventors expect that skilled artisans will employ these variations, and the inventors intend to practice the invention in addition to those specifically described above. Accordingly, the invention includes all modifications that are equivalent to the subject matter recited in the claims appended hereto as permitted by applicable law. Furthermore, all possible combinations of the above-mentioned elements will be included in the present invention unless specifically mentioned or excluded in the present specification.

60: artificial shell
61: disc member
62: hole
63: central penetrating member
64: rib
65: drainage and upper and lower binding holes
66: Eject pin seat
67, 68:

Claims

A thin disc member made mainly of plastic having a convex curved surface at its center, provided to allow the oysters to grow together; A central penetrating member formed at the center of the disc member and protruding from a concave surface having a circular hole so as to pass through the yarn string through the concave surface to a level that is level with the edge of the disc member; Wherein a plurality of radial projections are formed radially from the central penetrating member toward the edge of the disc member so as to be arranged in a direction perpendicular to the concave surface of the disc member, the center side covering the entire projecting height of the protruded central penetrating member Ribs integrally formed on an outer wall surface of the central penetrating member and having a triangular shape whose lower side is lowered toward the edge side of the disc member, the lower side of the triangular shape being formed to be horizontal with the edge of the disc member; And a plurality of rectangular or circular or rhomboidal drainage and up-and-down binding holes arranged in a radial pattern and formed to have a width in the radial direction of 1/4 to 2/3 with respect to the radius of the disk member. And a part of the ribs are formed to pass across the drainage and upper and lower binding holes.

delete

The method of claim 1, wherein the disc member, the central penetrating member, and the ribs are injection molded using a mixture of 50-70 wt% polypropylene, 15-35 wt% talc powder, and 13-25 wt% oyster shell powder Characterized in that it is molded.