JP2016087484A - Water intake filter, and method and device for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water intake filter that can be used for a long period of time even in seawater, that achieves enlargement of an opening ratio of the water intake filter and simplifies installation work while preventing deformation due to increase in weight independently of a support member, and that simplifies the manufacture by easily changing a diameter of an adjacent ring of a filter part and an interval between adjacent rings, and to provide a method and a device for manufacturing the water intake filter.SOLUTION: In a material forming step, a bundle of long fibers 14 are impregnated with thermoplastic resin using a resin bath 212 and then heated using a heater 213 in order to form a material 10 made of a long fiber-reinforced resin wire bundle with a triangular cross section. Subsequently, in a spiral body forming step, the material 10 is spirally wound around a revolving groove 222 of a mandrel 22 at intervals by using a filament winding device 23 so that a cylindrical spiral body 16 is formed. Then, the spiral body 16 is hardened on the mandrel 22 by using a heater 223 so that a cylindrical filtering part 11 is formed.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a water intake filter having a cylindrical filtration part in which a linear material is spirally formed with a gap, a manufacturing method thereof, and a manufacturing apparatus.

  2. Description of the Related Art Conventionally, a water intake filter having a cylindrical filtration part in which a metal wire having fine protrusions on a surface at regular intervals is spirally wound around an axis is known (see Patent Document 1). In this water intake filter, a gap (slit) is formed between the adjacent rings by interposing protrusions between adjacent rings adjacent to each other in the axial direction of the filtration portion by winding a metal wire. Yes.

Japanese Unexamined Patent Publication No. Hei 8-196211

  However, since the conventional water intake filter uses a metal wire, it is used for a long period of time in a corrosive fluid (for example, seawater or a fluid such as untreated waste liquid or waste liquid during treatment) in various treatment facilities. There is a problem that it cannot be used.

  In addition, when the intake filter is increased in size, the weight increases accordingly, and the intake filter easily deforms due to its own weight. Therefore, it is conceivable to prevent deformation by joining a support member or the like extending in the axial direction of the filtration part to the water intake filter. However, in this case, the gap between adjacent rings of the filtration unit is blocked by the support member, and the aperture ratio of the intake filter (the ratio of the cross-sectional area of the region through which the fluid passes with respect to the unit area of the intake filter) Cannot be increased. Moreover, installation work is very difficult with a water intake filter having an increased weight.

  Furthermore, in the water intake filter, since the protrusion is interposed between the adjacent rings of the filtration part, when changing the diameter of the adjacent ring of the filtration part or the interval between the adjacent rings, the position and protrusion of the protrusion The amount must be changed and the production becomes very cumbersome.

  The present invention has been made in view of the above points, and the object of the present invention is to be able to be used in a corrosive fluid against metal for a long period of time and to depend on a support member for deformation due to an increase in weight accompanying an increase in size. To prevent the need for water flow, to increase the aperture ratio of the intake filter and simplify the installation work, and to easily change the diameter of the adjacent rings in the filtration section and the interval between adjacent rings to simplify the manufacturing process. An object of the present invention is to provide a water intake filter, a method of manufacturing the same, and a manufacturing apparatus.

  In order to achieve the above-mentioned object, the solution taken by the present invention is a filtration part formed as a water intake filter in the shape of a cylinder in which a material having a trapezoidal section, a triangular section, or a rectangular section is spirally wound with a gap between them. It is assumed that the fluid filtered through the gap between adjacent rings of the material adjacent to each other in the axial direction of the filtration portion is taken into the interior. And as the said raw material, a long fiber reinforced resin wire bundle is used, The said filtration part is formed in an annular | circular shape seeing from the axial direction.

  In addition, the long fiber reinforced resin wire bundle is an aggregate obtained by combining a plurality of long fiber reinforced resin wires made of any one of a cross-sectional trapezoid, a triangular cross section, or a rectangular cross section compared to the raw material, or the raw material. It may be formed of an aggregate formed by combining a plurality of long-fiber reinforced resin wires having a cross-sectional trapezoidal shape, a triangular shape, or a rectangular shape.

  In addition, a support member made of fiber reinforced resin may be welded to at least one of the inner side in the radial direction and the outer side in the radial direction of the filtering part, extending in parallel to the axial direction of the filtering part.

  Further, outside the filtration part in the radial direction, an outer filtration part formed in a cylindrical shape with a material having a trapezoidal cross section, a triangular shape, or a rectangular cross section spirally wound around the same gap as the material of the filtration part As the material of the outer filtration part, the same long fiber reinforced resin wire bundle as the material of the filtration part is used, and the outer filtration part is formed in an annular shape when viewed from the axial direction, The radially inner side may be welded to the radially outer side of the filtration part.

  Further, in order to achieve the above object, the solution provided by the present invention is a method for producing a water intake filter, in which a long fiber bundle is impregnated with a resin to form a long fiber reinforced resin wire bundle having a trapezoidal shape, a triangular shape, or a rectangular shape. A material forming step of forming a material comprising: a spiral body forming the cylindrical spiral body by winding the material spirally with a gap around the mandrel via a guide provided on the mandrel And a filtration part forming step of curing the spiral body on the mandrel to form a cylindrical filtration part.

  Further, the mandrel can be driven to rotate in one direction around its axis, and in the spiral body forming step, the mandrel is driven to rotate around the axis, and a gap is formed with respect to the mandrel. May be wound spirally to form a cylindrical spiral body.

  On the other hand, the other solution taken by the present invention includes a long fiber reinforced resin wire forming step of forming a long fiber reinforced resin wire in which a long fiber bundle is impregnated with a resin, as a method of manufacturing a water intake filter, A fiber reinforced resin wire is formed of a bundle of long fiber reinforced resin wires, which are aggregates of the long fiber reinforced resin wires, wound around the mandrel in a spiral manner through a guide provided on the mandrel, and a plurality of times. A spiral body forming step of forming a cylindrical spiral body wound with the material, and a filtration portion forming step of curing the spiral body on the mandrel to form a cylindrical filtration portion. It is characterized by having.

  Further, in the long fiber reinforced resin wire forming step, the long fiber bundle may be impregnated with a resin to form a long fiber reinforced resin wire having a trapezoidal shape, a triangular shape, or a rectangular shape.

  Further, the mandrel can be driven to rotate in the forward and reverse directions around the axis of the mandrel, and in the helical body forming step, the mandrel is driven to rotate in the forward direction of the axis of the mandrel so as to leave a gap with respect to the mandrel. Winding the long fiber reinforced resin wire in a spiral shape, and then rotating the mandrel in a reverse direction around the axis to open a gap with respect to the mandrel and winding the long fiber reinforced resin wire in a spiral shape. It may be repeatedly performed to form a cylindrical spiral body in which a material composed of a bundle of long fiber reinforced resin wires, which is an aggregate of the long fiber reinforced resin wires, is wound.

  The mandrel includes a groove that extends in parallel with the axial direction of the mandrel and accommodates a support member made of fiber reinforced resin. When forming the spiral body on the mandrel in the spiral body forming step, The support member housed in the groove of the mandrel may be welded radially inward of the spiral body.

  Further, the material is spirally wound around the filtration unit cured on the mandrel via the guide with the same gap therebetween, and a cylindrical outer spiral body is formed radially outward of the filtration unit. An outer spiral body forming step for forming the outer spiral portion, and an outer filtration portion forming step for curing the outer spiral body on the radially outer side of the filtration portion to form a cylindrical outer filtration portion. Good.

  Further, the mandrel is divided so that the diameter can be reduced, and in the filtration part forming step, after the filtration part is cured on the mandrel, the mandrel is divided and reduced in diameter, and the mandrel is reduced from above the mandrel. The filtration part may be separated.

  Further, in order to achieve the above-mentioned object, the solution taken by the present invention is a long-fiber reinforced resin wire bundle having a trapezoidal shape, a triangular shape, or a rectangular shape by impregnating a long fiber bundle with resin as a water intake filter manufacturing apparatus. A material forming apparatus for forming a material, a mandrel around which the material formed by the material forming apparatus is wound, and a spiral spiral body with a gap around the mandrel to form a cylindrical spiral body. A helical body forming device. And the helical body which wound the said raw material helically with respect to the said mandrel is hardened on the said mandrel, The cylindrical filtration part is formed, It is characterized by the above-mentioned.

  Further, the mandrel is configured to be rotationally driven in one direction around its axis, and when the spiral body is formed by the spiral body forming device, the mandrel is rotationally driven around the axis, thereby the mandrel On the other hand, a cylindrical spiral body may be formed by providing a gap with the material spirally wound by the spiral body forming apparatus.

  On the other hand, other solution means taken by the present invention includes a long fiber reinforced resin wire forming apparatus for forming a long fiber reinforced resin wire material in which a long fiber bundle is impregnated with resin as a water intake filter manufacturing apparatus, A mandrel for winding a long fiber reinforced resin wire formed by a fiber reinforced resin wire forming apparatus, and the long fiber reinforced resin wire wound in a spiral shape with a gap around the mandrel, and the long fiber reinforced resin wire And a spiral body forming device that forms a cylindrical spiral body around which a material made of a bundle of long fiber reinforced resin wires, which is an assembly of the above, is wound. And the helical body which wound the said long fiber reinforced resin wire helically around the said mandrel in multiple times is hardened on the said mandrel, and it is characterized by forming a cylindrical filtration part.

  The long fiber reinforced resin wire forming apparatus may form a long fiber reinforced resin wire having a trapezoidal shape, a triangular shape, or a rectangular shape by impregnating the long fiber bundle with resin.

  Further, the mandrel is configured to be driven to rotate in the forward and reverse directions around its axis, and when the spiral body is formed by the spiral body forming device, the mandrel is rotated in the forward direction around the axis. The long fiber reinforced resin wire is spirally wound around the mandrel while the long fiber reinforced resin wire is wound spirally, and the mandrel is driven to rotate in the opposite direction around the axis to leave a gap with respect to the mandrel. It is also possible to form a cylindrical spiral body in which a material made of a bundle of long fiber reinforced resin wires, which is an aggregate of the long fiber reinforced resin wires, is wound by repeatedly winding the wire in a spiral shape. .

  The mandrel includes a groove that extends in parallel to the axial direction of the mandrel and accommodates a support member made of fiber reinforced resin. When the spiral body is formed by the spiral body forming device, the mandrel is formed in the groove of the mandrel. The accommodated support member may be welded radially inward of the spiral body.

  In short, in short, a long fiber reinforced resin wire bundle is used as a material of a filtration part that is spirally wound with a gap and formed into a cylindrical shape, and this filtration part is formed in an annular shape when viewed from the axial direction. Therefore, it can be used for a long time even in a corrosive fluid against metal. Moreover, the deformation | transformation by the increase in the weight accompanying enlargement can be prevented without depending on a support member, and the enlargement of the aperture ratio of a water intake filter and simplification of installation work can be aimed at. And the diameter of the adjacent ring of a filtration part and the space | interval between adjacent rings can be changed easily, and simplification of manufacture can be aimed at.

It is a perspective view which shows schematic structure in the state which attached the obstruction | occlusion part and the connection part to the both ends of the water intake filter which concerns on the 1st Embodiment of this invention. It is a vertical side view of the water intake filter of FIG. It is the side view which looked at the water intake filter of FIG. 1 from the axial center direction. It is a perspective view which shows schematic structure of the manufacturing apparatus which manufactures the water intake filter of FIG. FIG. 5 is a cutaway sectional view in which a part of a mandrel of the manufacturing apparatus of FIG. 4 is cut away. It is a perspective view which shows schematic structure in the state which attached the obstruction | occlusion part and the connection part to the both ends of the water intake filter which concerns on the modification of 1st Embodiment. It is a perspective view which shows schematic structure in the state which attached the obstruction | occlusion part and the connection part to the both ends of the water intake filter which concerns on the other modification of 1st Embodiment. It is a notch sectional view which notched a part of mandrel of the manufacturing apparatus which concerns on the other modification of 1st Embodiment. It is a perspective view which shows schematic structure of the manufacturing apparatus which manufactures the water intake filter which concerns on the 2nd Embodiment of this invention. FIG. 10 is a cutaway sectional view in which a part of the mandrel of the manufacturing apparatus of FIG. 9 is cut away. It is a perspective view which shows schematic structure of the manufacturing apparatus which manufactures the water intake filter which concerns on the 3rd Embodiment of this invention. It is a perspective view which shows schematic structure of the water intake filter which concerns on the 4th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: It is not the thing of the character which limits the technical scope of this invention.

  FIG. 1 is a perspective view showing a schematic configuration in a state in which a closed portion and a connecting portion are attached to both ends of a water intake filter according to a first embodiment of the present invention, FIG. 2 is a longitudinal side view of the water intake filter, and FIG. The side view which looked at the water intake filter from the axial center direction is shown, respectively.

  First, the water intake filter according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

  1 to 3, reference numeral 1 denotes a water intake filter. The water intake filter 1 is formed by spirally winding a material 10 having a substantially equilateral triangular cross section, for example, formed in a linear shape at a certain interval in the axial direction. A filtration unit 11 is provided that is rotated and formed into a cylindrical shape. The raw material 10 is comprised from the long fiber reinforced resin wire bundle, and the outer periphery of the filtration part 11 becomes an annular | circular shape seeing from the axial center direction of the said filtration part 11. FIG. And the filtration part 11 has the clearance gap between adjacent rings of the raw material 10 adjacent to the axial direction. In this case, as the filtration part 11, the outer diameter is set to 100 to 500 mm, and the length in the axial direction is set to 1000 to 6000 mm.

  One end (in the right end in FIG. 1) in the axial direction of the filtration unit 11 is provided with a closing portion 12 that closes the inside of the filtration unit 11, while the other end in the axial direction in the filtration unit 11 (the left end in FIG. 1). ) Is provided with a connection portion 13 for connecting the inside of the filtration portion 11 so as to communicate with each other. This connecting portion 13 has a male screw 131 and is screwed to a female screw of a connecting portion provided in another filtering portion (not shown) or a water intake pipe (not shown) that allows the filtering portion 11 to continue in the other direction. Connected by

  The intake filter 1 is used in a filtration system that uses a multiple filter medium that is buried in the seabed, and has gravel outside the intake filter 1 and a filter medium such as sand arranged outside the gravel. In such a filtration system, the seawater that has passed through the multiple filter medium is introduced into the water filter 1 via a gap (slit) between adjacent rings of the material 10 of the filtration unit 11. At this time, the gap between adjacent rings of the material 10 is set to be narrower than the size of the gravel on the outside thereof, and the gravel is prevented from entering through the gap of the filtration unit 11 into the water intake filter 1. Yes.

  As the raw material 10, a long fiber reinforced resin wire bundle having a regular triangular cross section (for example, one side having a length of 3 to 60 mm) is used. Moreover, as a long fiber bundle which comprises a long fiber reinforced resin wire bundle, for example, a glass fiber having a wire diameter of 0.1 to 100 μm, a Kepler fiber, a carbon fiber, or a mixed fiber in which these are combined is used. As the resin impregnated in the long fiber bundle, a thermoplastic resin (for example, polypropylene resin, polyethylene resin, vinyl chloride resin, etc.) is used. The resin content of the long fiber reinforced resin wire bundle is 40 to 70% by weight. Further, the closing portion 12 and the connecting portion 13 are also formed using the same long fiber reinforced resin wire bundle as the material 10. In addition, although the thermoplastic resin was used as resin impregnated with a long fiber, a thermosetting resin (for example, an epoxy resin, a phenol resin, a vinyl ester resin, an unsaturated polyester resin etc.) may be used.

  And the filtration part 11 makes the intersection of two ends which comprise the cross section of the raw material 10 into the radial direction inside of the filtration part 11, and the remaining 1 side which connects the other ends of the said 2 sides is a filtration part. 11 is formed by being spirally wound while maintaining the orientation of the material 10 so as to be parallel to the axial direction of the filtration unit 11 in a state of being radially outward. By winding the material 10 in this way, the gap between the adjacent rings of the material 10 of the filtration unit 11 is narrower in the radially outer space than in the radially inner space. . For this reason, when the seawater outside the filtering unit 11 is taken in from the gap between the adjacent rings of the material 10, the foreign matter that tries to intrude with the seawater is pushed between the adjacent rings of the material 10 even if pushed by the flow of seawater. It becomes difficult to be caught from the outside in the radial direction with respect to the gap between them, and the decrease in the aperture ratio of the water intake filter 1 due to foreign matters is effectively avoided.

Here, schematic structure of the manufacturing apparatus which manufactures the water intake filter 1 is demonstrated based on FIG.
FIG. 4 is a perspective view showing a schematic configuration of a manufacturing apparatus for manufacturing the water intake filter 1. The manufacturing apparatus 2 impregnates a long fiber bundle 14 with a resin to form a material 10 composed of a long fiber reinforced resin wire bundle. A material forming device 21 to be formed, a mandrel 22 around which the material 10 formed by the material forming device 21 is wound, and a material 10 from the material forming device 21 are spirally wound around the mandrel 22 with a gap therebetween to form a cylinder. And a filament winding device 23 as a helical body forming device for forming the helical body 16.

  The material forming device 21 includes four reels 211, 211,... Around which the long fiber bundle 14 is wound, and a collecting device (not shown) that combines the long fiber bundles 14 wound from each reel 211 into one. The long fiber bundle 141 bundled together by the collecting device is allowed to pass through, and the long fiber bundle 141 impregnated with the thermoplastic resin is impregnated with the long fiber bundle 141, and the long fiber bundle 141 impregnated with the thermoplastic resin with the resin bath 212. A heating device 213 that forms a material 10 composed of a bundle of long fiber reinforced resin wires, a cooling device 214 that cools the material 10 heated by the heating device 213, and a material 10 that is cooled by the cooling device 214. And a take-up device 215 for picking up and sending it to the filament winding device 23.

  Each reel 211 has an individual motor 210 coupled to its respective axis, and the long fiber bundle 14 is unwound by rotating each reel 211 around its axis in synchronization with each motor 210. The heating device 213 includes a preheating device 216, and the long fiber bundle 141 is preheated by the preheating device 216. The long fiber bundle 141 preheated by the preheating device 216 is heated in the mold of the heating device 213 and formed as a material 10 having a triangular cross section. The preheating device 216 and the heating device 213 are heated by the heating device 213 so that the temperature of the long fiber bundle 14 that is preheated by the preheating device 216 is adjusted to 230 to 330 ° C. The temperature of the long fiber bundle 14 is controlled to 260 to 330 ° C.

  The cooling device 214 includes an air-cooled or water-cooled medium cooling unit 218 that cools the medium by heat exchange with air or water, and is heated by the heating device 213 by circulation of the medium between the cooling device 214 and the cooling device 214. The material 10 is cooled to 10 to 40 ° C. At this time, the material 10 impregnated with the thermoplastic resin is sent to the take-up device 215 in a state where the thermoplastic reaction due to the heating of the heating device 213 is stopped and the material is flexible. The take-up device 215 includes a drive motor 219 that applies a pulling force to the material 10 by a roller (not shown). The pulling force applied to the material 10 from the cooling device 214 is adjusted by the drive motor 219 so that the material 10 is moved every minute. Taking over at a speed of 200 mm. At this time, the motor 210 of each reel 211 also rotates in synchronization with the drive motor 219 of the take-up device 215 so that an excessive load is not applied to the material 10.

  Further, the mandrel 22 is divided so that the diameter can be reduced when the core member (not shown) is pulled out by being driven to rotate around the axis by the motor 221 in one direction. FIG. 5 shows a cutaway cross-sectional view in which a part of the mandrel 22 of the manufacturing apparatus 2 is cut. In FIG. 5, a spiral winding groove for winding the material 10 sent from the take-up device 215 is provided on the mandrel 22. 222 (guide) is recessed. The winding groove 222 is formed in a V-shaped cross-sectional shape that matches the cross-sectional shape of the material 10.

  Further, the filament winding device 23 guides the material 10 from the take-up device 215 to the winding groove 222 of the mandrel 22 that is rotationally driven in one direction. At this time, the space between the winding grooves 222 of the mandrel 22 is a gap formed between adjacent rings of the material 10, and the material 10 is wound from the start end to the end of the winding groove 222 of the mandrel 22 to form a cylindrical spiral shape. A body 16 is formed. The basic form of this type of filament winding apparatus 23 is known, and a detailed description thereof will be omitted.

  Further, a heating device 223 is provided outside the mandrel 22 in the radial direction. The heating device 223 is formed to have a length substantially the same as the length of the mandrel 22 in the axial direction, and the material 10 wound around the mandrel 22 is heated from the entire area in the axial direction to be promptly accelerated. Further, the heating device 223 is temperature-controlled by a temperature adjusting device (not shown), and controls the temperature of the material 10 heated by the heating device 223 to 230 to 330 ° C.

Next, the manufacturing method of the water intake filter 1 is demonstrated based on FIG.
First, as a material forming step, each reel 211 of the material forming device 21 is rotated around its axis by an individual motor 210 to unwind the long fiber bundle 14 from each reel 211, and the long fiber bundled into one by the collecting device. The bundle 141 is passed through the resin bath 212 and impregnated with the thermoplastic resin. Then, the long fiber bundle 141 is heated to 260 to 330 ° C. in the molds of the preheating device 216 and the heating device 213 to form the material 10 having a triangular cross section. Thereafter, the material 10 is cooled to 10 to 40 ° C. by the cooling device 214 to stop the thermoplastic reaction, and then taken up at a speed of 200 mm per minute by the take-up device 215 in a flexible state. Sent to the ment winding apparatus 23.

  Next, as a spiral body forming process, the material 10 from the take-up device 215 is guided by the filament winding device 23 to the winding groove 222 of the mandrel 22 that is rotationally driven in one direction. That is, the filament winding device 23 guides and winds the material 10 from the start end to the end of the winding groove 222 of the mandrel 22 with the rotation of the mandrel 22, thereby forming the cylindrical spiral body 16.

  Then, as a filtration part formation process, the helical body 16 (material 10) is heated and hardened from the whole area of the axial center on the mandrel 22, and the cylindrical filtration part 11 is formed. Thereafter, the core member of the mandrel 22 is pulled out, and the mandrel 22 is divided and reduced in diameter, so that the filtration unit 11 is removed from the mandrel 22.

  Therefore, in the present embodiment, the long fiber reinforced resin wire bundle in which the long fiber bundle 14 is impregnated with the thermoplastic resin is used as the material 10 of the filtration part 11 that is spirally wound with a gap and formed into a cylindrical shape. Since the filtration part 11 is formed in an annular shape when viewed from the axial direction, the intake filter 1 can be used for a long time even in corrosive seawater against metal. Moreover, the filtration part 11 is formed of the raw material 10 made of the long fiber reinforced resin wire bundle in which the long fiber bundle 14 is impregnated with the thermoplastic resin, so that deformation due to an increase in weight due to an increase in size depends on the support member. Therefore, the opening ratio of the water intake filter 1 can be increased and the installation work can be simplified. Moreover, because the filament winding device 23 guides and winds the material 10 from the start end to the end of the winding groove 222 of the mandrel 22 with the rotation of the mandrel 22, the cylindrical spiral body 16 is formed. The diameter of the adjacent rings of the material 10 of the filtering unit 11 and the interval between the adjacent rings can be easily changed by changing the guide operation by the winding groove 222 or the filament winding device 23, and the manufacturing can be simplified. .

  In the present embodiment, the water intake filter 1 is configured by the filtering unit 11 formed in a cylindrical shape by spirally winding the material 10 at a certain interval in the axial direction, as shown in FIG. In addition, the inner side in the radial direction of the filtration unit 11 is formed at a length approximately equal to the length in the axial direction on the inner side in the radial direction of the filtration unit 11 and at an angular position that divides the circumferential direction of the filtration unit 11 into four equal parts. Four support members 27, 27,... Joined to each other may be provided. If these support members 27 are formed of the same fiber reinforced resin as the material 10, the rigidity of the filtration unit 11 can be effectively increased during a period of use in corrosive seawater against metal. In this case, the mandrel 22 is provided with a groove that extends parallel to the axial direction of the mandrel 22 and accommodates each support member 27. When the spiral body 16 is formed on the mandrel 22 in the spiral body forming step, the groove of the mandrel 22 is formed. Each support member 27 accommodated in the inner space may be welded and joined to the inside of the spiral body 16 in the radial direction.

  On the other hand, as shown in FIG. 7, the filter unit 11 is formed on the outer side in the radial direction so as to have a length that substantially matches the length in the axial direction, and at an angular position that divides the circumferential direction of the filter unit 11 into four equal parts. Four support members 27, 27,... Joined to the outer side in the radial direction of the filtration unit 11 may be provided. In this case, each support member 27 may be welded and joined to the outer side in the radial direction of the spiral body 16 before the spiral body 16 formed on the mandrel 22 is cured in the spiral body forming step.

  Moreover, in this Embodiment, although the filtration part 11 was formed of the raw material 10 which consists of a long fiber reinforced resin wire bundle which impregnated the thermoplastic resin with respect to the long fiber bundle 14, a filtration part is a thermoplastic resin with respect to a long fiber bundle. It may be formed of a material composed of a bundle of long fiber reinforced resin wires impregnated with. In that case, the temperature of the long fiber bundle 14 preheated by the preheating device 216 is 230 to 330 ° C., the temperature of the long fiber bundle 14 heated by the heating device 213 is 260 to 330 ° C., and the cooling device 214. It is necessary to control the cooling temperature of the raw material 10 cooled by 10 to 40 ° C.

  Further, in the present embodiment, in the material forming step, the long fiber bundles 14 are unwound from each reel 211 of the material forming apparatus 21 and are combined into one to pass through the resin bath 212 to pass the thermoplastic resin. A long fiber impregnated but impregnated with a thermoplastic resin or a thermosetting resin in a long fiber bundle before being wound on each reel of the material forming apparatus, and impregnated with the thermoplastic resin or the thermosetting resin in advance. A bundle may be wound around each reel. In this case, the sub-step of impregnating the thermoplastic resin or the thermosetting resin with a resin bath in the manufacturing apparatus can be eliminated.

  Further, in the present embodiment, in the material forming step, the long fiber bundle 14 is impregnated with resin to form the material 10 composed of a long fiber reinforced resin wire bundle having a triangular cross section. However, the long fiber bundle is made of thermoplastic resin or heat. A material made of a bundle of long fiber reinforced resin wires having a trapezoidal cross section or a rectangular cross section may be formed by impregnating a curable resin.

  Further, in this embodiment, the winding groove 222 is provided in the mandrel 22, but a reel around which a strip material having a substantially trapezoidal cross section having flexibility is provided in the manufacturing apparatus, as shown in FIG. The cross section is wound spirally without any gap in the axial direction of the mandrel 22 using the filament winding device 23 so that the wide portion of the strip 28 unrolled from the reel is in close contact with the surface of the mandrel 22 A substantially equilateral triangular winding groove 29 may be formed. At this time, the winding groove 29 by the strip material 28 is formed in advance when the material is wound around the mandrel, and is removed together when the filtration unit 11 is removed from the mandrel 22, and then the strip material 28. May be separated from the filtration unit 11.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  In the present embodiment, the long fiber reinforced resin wire bundle is formed of an aggregate obtained by combining a plurality of long fiber reinforced resin wires each having a small cross-sectional triangle as compared with the material 10. The remaining configuration except the long fiber reinforced resin wire bundle is the same as that of the first embodiment, and the same portions are denoted by the same reference numerals and detailed description thereof is omitted.

  FIG. 9 is a perspective view showing a schematic configuration of a manufacturing apparatus for manufacturing a water intake filter according to a second embodiment of the present invention, and FIG. 10 shows a cut-out cross-sectional view of a part of the mandrel of the manufacturing apparatus. .

  In FIG. 9, the manufacturing apparatus 3 of the water intake filter 1 includes a long fiber reinforced resin wire forming apparatus 31 that impregnates a long fiber bundle 14 with a resin to form a long fiber reinforced resin wire 17 and the long fiber reinforced resin wire forming apparatus. The mandrel 32 around which the long fiber reinforced resin wire 17 formed by 31 and the material 10 from the material forming device 21 are spirally wound around the mandrel 22 with a gap therebetween to form the cylindrical spiral body 16. And a filament winding device 33 as a spiral body forming device. In addition, as shown in FIG. 10, as the raw material 10, the aggregate | assembly which combined nine long fiber reinforced resin wires 17 of the cross-sectional regular triangle (for example, the length of 1-20 mm of one side) as an example of a micro triangle shape is combined. It is used.

  The long fiber reinforced resin wire forming apparatus 31 passes one reel 311 around which the long fiber bundle 14 is wound, and the long fiber bundle 14 wound out from the reel 311, and puts the thermoplastic resin into the long fiber bundle 14. The resin bath 312 to be impregnated, the heating device 313 for heating the long fiber bundle 14 impregnated with the thermoplastic resin by the resin bath 312 to form the long fiber reinforced resin wire 17, and the long fiber reinforcement heated by the heating device 313. A cooling device 314 for cooling the resin wire 17 and a take-up device 215 for taking the long fiber reinforced resin wire 17 cooled by the cooling device 314 and sending it to the filament winding device 33 are provided.

  The reel 311 has a motor 310 coupled to its shaft, and the reel 311 is rotated about the axis by the motor 310 to unwind the long fiber bundle 14. The heating device 313 includes a preheating device 316 and a laser heating device 317. The preheating device 316 preheats the long fiber bundle 14 and passes the preheated long fiber bundle 14 into the mold of the heating device 313. Heating is performed by a laser heating device 317. The long fiber bundle 14 heated by the laser heating device 317 is passed through the mold of the heating device 313 and formed as a long fiber reinforced resin wire 17 having a triangular cross section. The preheating device 316 and the laser heating device 317 are temperature-adjusted by the temperature adjusting device 319, and the temperature of the long fiber bundle 14 preheated by the preheating device 316 is set to 230 to 330 ° C. by the laser heating device 317. The temperature of the heated long fiber bundle 14 is controlled to 260 to 330 ° C.

  The cooling device 314 includes an air-cooled or water-cooled medium cooling unit 318 that cools the medium by heat exchange with air or water, and is heated by the heating device 313 by circulation of the medium to and from the cooling device 314. The long fiber reinforced resin wire 17 is cooled to 10 to 40 ° C. At this time, the long-fiber reinforced resin wire 17 impregnated with the thermoplastic resin is sent to the take-up device 215 in a state where the thermoplastic reaction due to the heating of the laser heating device 317 is stopped and it has flexibility. In the take-up device 215, the tensile force applied to the long fiber reinforced resin wire 17 from the cooling device 314 is adjusted, and the long fiber reinforced resin wire 17 is taken up at a speed of 200 mm per minute. At this time, the motor 310 of the reel 311 also rotates in synchronization with the pulling force of the take-up device 215 so that an unreasonable load does not act on the long fiber reinforced resin wire 17.

  Further, the mandrel 32 is driven to rotate in the forward and reverse directions around the axis by a motor 321 and is divided so that the diameter can be reduced when a removable core material (not shown) is pulled out. As shown in FIG. 10, the mandrel 32 is provided with a helical winding groove 322 (guide) that is guided when the long fiber reinforced resin wire 17 sent from the take-up device 215 is wound. . The winding groove 322 is formed in a V-shaped cross-sectional shape that is similar to the cross-sectional shape of the long fiber reinforced resin wire 17 and matches the cross-sectional shape of the material 10 that combines nine cross-sectional areas.

  Further, the filament winding device 33 guides the long fiber reinforced resin wire 17 from the take-up device 215 to the winding groove 322 of the mandrel 32 that is rotationally driven in the reverse direction. At this time, the space between the winding grooves 322 of the mandrel 32 is a gap formed between adjacent rings of the material 10, and the filament winding device 33 moves the long fiber reinforced resin wire 17 guided from the take-up device 215 in the forward direction. When the long fiber reinforced resin wire 17 is wound from the start end to the end of the winding groove 322 of the mandrel 32 rotating in the reverse direction, the long fiber reinforced resin wire 17 is inverted 180 ° and then the winding groove of the mandrel 22 rotating in the reverse direction. The cylindrical spiral body 16 is formed by appropriately repeating the winding of the long fiber reinforced resin wire 17 from the terminal end of 222 to the starting end. The details of this procedure will be described in the spiral body forming step of the method for manufacturing the water intake filter 1.

  Further, a heating device 232 for heating the long fiber reinforced resin wire 17 wound around the mandrel 32 from the whole area in the axial direction of the mandrel 32 is provided outside the mandrel 32 in the radial direction. Contributes to the promotion of proper curing.

Next, the manufacturing method of the water intake filter 1 is demonstrated based on FIG.
First, as the long fiber reinforced resin wire forming process, the reel 311 of the long fiber reinforced resin wire forming apparatus 31 is rotated around the axis by the motor 310 and the long fiber bundle 14 unwound from the reel 311 is passed through the resin bus 312. Impregnated with thermoplastic resin. Then, the long fiber bundle 14 is heated to 260 to 330 ° C. by the preheating device 316 and the laser heating device 317, and the long fiber reinforced resin wire 17 having a triangular cross section is formed through the mold of the heating device 213. Thereafter, the long fiber reinforced resin wire 17 is cooled to 10 to 40 ° C. by the cooling device 314 to stop the thermoplastic reaction, and in a flexible state, at a rate of 200 mm per minute by the take-up device 215. Take it over and send it to the filament winding device 33.

  Next, as a helical body forming step, the long fiber reinforced resin wire 17 from the take-up device 215 is wound spirally 9 times by the filament winding device 33 around the winding groove 322 of the mandrel 32 that is rotationally driven in the forward and reverse directions. Thus, a cylindrical spiral body 16 is formed in which a material 10 composed of a bundle of long fiber reinforced resin wires 17 which is an aggregate of long fiber reinforced resin wire materials 17 is wound.

  Specifically, in order to guide the long fiber reinforced resin wire 17 to the winding groove 322 of the mandrel 32 by the filament winding device 33, first, the long length from the start end to the end of the winding groove 322 of the mandrel 32 rotating in the forward direction is long. When the fiber reinforced resin wire 17 is guided and wound, the mandrel 32 is rotated in the opposite direction, and the filaments from the end to the start of the winding groove 322 so that the sides face the long fiber reinforced resin wire 17 wound earlier. The long fiber reinforced resin wire 17 that has been turned 180 ° by the winding device 23 is guided and wound. Thereafter, the mandrel 32 is rotated in the forward direction, and the winding groove 322 is inserted so as to enter between the long fiber reinforced resin wire 17 wound around the second time and one slope of the winding groove 322 (left side or right side in FIG. 9). The long fiber reinforced resin wire 17 that is turned 180 ° by the filament winding device 23 is guided and wound from the start end to the end of the wire, and the mandrel 32 is rotated in the reverse direction to wind the long fiber reinforced resin wire 17 wound around the second time. The long fiber reinforced resin wire 17 is not reversed by the filament winding device 23 from the end of the winding groove 322 to the start end so as to enter between the other side slopes (right side or left side in FIG. 9) of the winding groove 322. Guide and wrap. Then, the mandrel 32 was rotated in the forward direction and turned 180 ° by the filament winding device 23 from the start end to the end of the winding groove 322 so that the sides face each other with respect to the long fiber reinforced resin wire 17 wound around the third time. After guiding and winding the long fiber reinforced resin wire 17, the mandrel 32 is rotated in the opposite direction, and the start end from the end of the winding groove 322 so that the sides face the long fiber reinforced resin wire 17 wound around the fourth time. The long fiber reinforced resin wire 17 is guided and wound by the filament winding device 23 without being inverted by 180 °. Thereafter, the mandrel 32 is rotated in the forward direction, and the fifth and sixth times between the long fiber reinforced resin wire 17 wound around the fifth time and one slope of the winding groove 322 (left side or right side in FIG. 9). Between the wound long fiber reinforced resin wires 17 and 17 and between the long fiber reinforced resin wire 17 wound in the sixth time and the other inclined surface (right side or left side in FIG. 9) of the winding groove 322, respectively. The long fiber reinforced resin wire 17 is repeatedly guided and wound in order in a state where the winding groove 322 is turned 180 ° by the filament winding device 23 from the start end to the end, from the end to the start, and from the start to the end. As a result, a cylindrical spiral body 16 is formed in which a material 10 made of an assembly of long fiber reinforced resin wire material 17 (long fiber reinforced resin wire material bundle) is wound.

  Then, as a filtration part formation process, the helical body 16 (material 10) is heated and hardened from the whole axial direction direction on the mandrel 32, and the cylindrical filtration part 11 is formed. Thereafter, the core member of the mandrel 32 is pulled out, and the mandrel 32 is divided and contracted to remove the filtration unit 11 from the mandrel 32.

  Therefore, in this embodiment, the long fiber reinforced resin wire 17 in which a long fiber bundle 14 is impregnated with a thermoplastic resin is used as the material 10 of the filtration part 11 that is spirally wound and formed into a cylindrical shape with a gap. Since the filtration part 11 is formed in an annular shape when viewed from the axial direction, the intake filter 1 is long even in corrosive seawater against metals. Can be used for a period. In addition, the filament-winding device 33 guides the long fiber reinforced resin wire 17 to the winding groove 322 of the mandrel 32 as the mandrel 22 rotates forward and backward, and repeatedly winds the tubular spiral body 16 a plurality of times. Since it is formed, the diameter of the adjacent rings of the material 10 of the filtration part 11 and the interval between the adjacent rings can be easily changed by changing the guide operation by the winding groove 222 or the filament winding device 23, and the manufacturing is easy. Can be achieved.

  In the present embodiment, the filtration part 11 is formed by the material 10 made of an assembly of long fiber reinforced resin wire 17 (long fiber reinforced resin wire bundle) in which the long fiber bundle 14 is impregnated with a thermoplastic resin. The filtration part may be formed of a material composed of an assembly of long fiber reinforced resin wires (long fiber reinforced resin wire bundles) in which a long fiber bundle is impregnated with a thermosetting resin. In that case, the temperature of the long fiber bundle 14 preheated by the preheating device 216 is set to 60 to 90 ° C., the temperature of the long fiber bundle 14 heated by the laser heating device 317 is set to 60 to 90 ° C., and the cooling device. It is necessary to control the cooling temperature of the long fiber reinforced resin wire 17 cooled by 214 to 10 to 40 ° C., respectively.

  In the present embodiment, in the material forming step, the long fiber bundle 14 unwound from the reel 311 of the long fiber reinforced resin wire forming apparatus 31 is passed through the resin bus 312 and impregnated with the thermoplastic resin. The long fiber bundle before being wound on the reel of the apparatus is impregnated with a thermoplastic resin or a thermosetting resin, and the long fiber bundle impregnated with the thermoplastic resin or the thermosetting resin in advance is wound on the reel. May be. In this case, the sub-step of impregnating the thermoplastic resin or the thermosetting resin with a resin bath in the manufacturing apparatus can be eliminated.

  In the present embodiment, in the material forming step, the long fiber bundle 14 is impregnated with resin to form the long fiber reinforced resin wire 17 having a triangular cross section. However, a thermoplastic resin or a thermosetting resin is applied to the long fiber bundle. A long fiber reinforced resin wire having a trapezoidal cross section or a rectangular cross section may be formed by impregnation. Furthermore, in the present embodiment, a material composed of an assembly of nine long fiber reinforced resin wires having a triangular cross section is formed. However, the number of long fiber reinforced resin wires to be combined is not limited to this, Materials may be formed in combination, and long fiber reinforced resin wires having specific cross-sectional shapes such as cross-sectional triangles, cross-sectional trapezoids, and cross-sectional rectangles by impregnating thermoplastic fibers or thermosetting resins into long fiber bundles are used as appropriate. A material composed of a combined assembly may be formed. Further, a long fiber reinforced resin wire having an unspecified cross-sectional shape in which a long fiber bundle is impregnated with a thermoplastic resin or a thermosetting resin is wound around a mandrel a plurality of times through a winding groove (guide), and the long fiber reinforced A cylindrical spiral body in which a raw material made of a long fiber reinforced resin wire bundle, which is an aggregate of resin wire materials, is wound may be formed.

  Next, a third embodiment of the present invention will be described with reference to FIG.

  In the present embodiment, the manufacturing apparatus includes a laser heating device that heats the material 10 immediately before being wound around the winding groove 322 of the mandrel 32. The rest of the configuration except for the laser heating device is the same as in the first embodiment, and the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  FIG. 11 is a perspective view showing a schematic configuration of a manufacturing apparatus for manufacturing a water intake filter according to the third embodiment of the present invention. In FIG. 11, 4 is a manufacturing apparatus for manufacturing the water intake filter 1.

  The manufacturing apparatus 4 includes a laser heating device 41 that heats the material 10 guided by the filament winding device 33 immediately before the material 10 is wound around the winding groove 322 of the mandrel 32. This laser heating device 41 is temperature-controlled by the temperature adjusting device 42 and controls the temperature of the material 10 heated by the laser heating device 41 to 260 to 330 ° C.

  Here, the manufacturing method of the water intake filter 1 will be described. Since the material forming process described in the first embodiment is the same, only the spiral body forming process will be described.

  As a spiral body forming step, the material 10 sent from the take-up device 215 is guided by the filament winding device 23 to the winding groove 222 of the mandrel 22 that is rotationally driven in one direction. Then, immediately before the material 10 is wound around the winding groove 322 of the mandrel 32, the material is heated by the laser heating device 41 to form the cylindrical spiral body 16 while the material 10 is cured.

  Thereafter, in the filtration part forming step, the spiral body 16 (the material 10) is heated on the mandrel 22 from the entire region in the axial center direction to be further cured to form the tubular filtration part 11, and then the core material of the mandrel 22 Is removed, and the mandrel 22 is divided and reduced in diameter to remove the filtration unit 11 from the mandrel 22.

  Therefore, in the present embodiment, the material 10 is heated by the laser heating device 41 immediately before being guided and wound by the filament winding device 23 from the start end to the end of the winding groove 222 of the mandrel 22 as the mandrel 22 rotates. Since the cylindrical spiral body 16 is formed while curing 10, the filtration part 11 can be formed more quickly.

  The present invention is not limited to the above-described embodiments, and includes other various modifications. For example, in each of the above embodiments, the preheating devices 216 and 316 are provided in the raw material forming device 21 and the long fiber reinforced resin wire forming device 31 of the manufacturing apparatuses 2 to 4, but the heating device or the laser heating device is preheated. If it is possible to adjust the temperature in consideration of preheating by the apparatus, specifically, stepwise temperature adjustment without the need for preheating, the preheating apparatus is unnecessary and the manufacturing apparatus can be simplified. .

  Moreover, in each said embodiment, although the cooling devices 214 and 314 were provided in the raw material formation apparatus 21 and the long fiber reinforced resin wire formation apparatus 31 of the manufacturing apparatuses 2-4, a heating apparatus or a laser heating apparatus is based on a cooling apparatus. If temperature adjustment in consideration of cooling, specifically, stepwise temperature adjustment that does not require cooling after heating is possible, it is possible to eliminate the cooling device and simplify the manufacturing apparatus.

  In each of the above embodiments, the case where the water intake filter 1 is applied to the water intake device 1 that takes in seawater has been described. However, a corrosive fluid to metal, for example, untreated waste liquid or waste liquid in process in various treatment facilities. It may be used as a water intake filter for filtering fluid such as.

  Moreover, in each said embodiment, although the outer diameter was set to 100-500 mm as the filtration part 11, and the length of the axial direction was set to 1000-6000 mm, respectively, the outer diameter and axial center of the filtration part were described. The length of the direction is not limited to this.

  Furthermore, in each said embodiment, the fluid which filtered through the clearance gap between the adjacent rings of the raw material 10 mutually adjacent | abutted in the axial center direction of the filtration part 11 with which the raw material 10 wound spirally with the clearance gap was provided. Although the water intake filter 1 for taking water into the inside has been described, as shown in FIG. 12, the material 50 having a triangular cross section is spirally formed on the outer side in the radial direction of the filtration unit 11 with the same gap as the material 10 of the filtration unit 11. The water intake filter 5 having the outer filtration part 51 wound around and formed in a cylindrical shape may be used. Moreover, as the raw material 50 of the outer side filtration part 51, the same long fiber reinforced resin wire bundle as the raw material 11 of the filtration part 11 is used, and the outer side filtration part 51 is formed in the annular | circular shape seeing from the axial center direction, and is filtered. The radially inner side is welded to the radially outer side of the portion 11. And as the manufacturing method of the water intake filter 5, the raw material 50 is wound around the filtration part 11 hardened | cured on the mandrel spirally around the same clearance gap as it, and is cylindrical in the radial direction outer side of the said filtration part 11 An outer spiral body forming step for forming the outer spiral body, and an outer filtration portion forming step for curing the outer spiral body on the radially outer side of the filtration portion 11 to form the cylindrical outer filtration portion 51. doing. In this case, since the outer filtration part 51 is formed by spirally winding the material 50 with the same gap as the filtration part 11, the adjacent rings of the materials 10 and 50 of the filtration part 11 and the outer filtration part 51 are formed. It is possible to firmly form the filtration part 11 and the outer filtration part 51 by mutually complementing the rigidity while ensuring the opening ratio of the water intake filter 5 by making the gaps between them coincide with each other.

  In each of the above embodiments, the heating devices 213 and 313, the preheating devices 216 and 316, the cooling devices 214 and 314, the take-up device 215, and the laser heating device 41 are provided in the manufacturing apparatuses 2 to 4, but the long fibers When a material consisting of a bundle of long fiber reinforced resin wires impregnated with a thermosetting resin is wound around a mandrel by a filament winding device, a heating device, a preheating device, a cooling device, a take-up device, and a laser heating device are used. It is also possible to apply an unnecessary manufacturing apparatus. In that case, it is only necessary to provide only a heating device that heats the material wound around the mandrel from the entire region in the axial direction on the outer side in the radial direction of the mandrel.

  Further, in each of the above embodiments, the motors 210 and 310 are connected to the shafts of the reels 211 and 311, respectively, and the reels 211 and 311 are rotated around the axes by the motors 210 and 310 to wind the long fiber bundle 14. However, the long-fiber bundle may be taken out from the center of the long-fiber bundle. In that case, a motor is not required and the equipment cost can be reduced, and it is not necessary to synchronize the motor with the drive motor of the take-up device, thereby simplifying the control.

DESCRIPTION OF SYMBOLS 1 Water intake filter 10 Material 11 Filtration part 14 Long fiber bundle 16 Spiral body 17 Long fiber reinforced resin wire 2 Manufacturing apparatus 21 Material formation apparatus 22 Mandrel 222 Winding groove (guide)
23 Filament winding device (helical body forming device)
27 Support member 3 Manufacturing device 31 Long fiber reinforced resin wire forming device 32 Mandrel 322 Winding groove (guide)
33 Filament winding device (spiral body forming device)
4 Production equipment 5 Water intake filter 50 Material 51 Outer filtration section

Claims (18)

A material having a trapezoidal cross-section, a triangular cross-section, or a rectangular cross-section has a filtration part that is spirally wound with a gap and formed in a cylindrical shape, and adjacent to each other in the axial direction of the filtration part. A water intake filter that takes in the fluid filtered through the gap between the rings,
As the material, a long fiber reinforced resin wire bundle is used,
The water intake filter, wherein the filtration part is formed in an annular shape when viewed from the axial direction.   The long fiber reinforced resin wire bundle is an aggregate obtained by combining a plurality of long fiber reinforced resin wires made of any one of a cross-sectional trapezoid, a triangular cross section, or a rectangular cross section compared to the raw material, or compared to the raw material. The water intake filter according to claim 1, wherein the water intake filter is formed of an aggregate obtained by combining a plurality of long-fiber reinforced resin wires having a small cross-sectional trapezoidal shape, a triangular cross-section, or a rectangular cross-section.   The support member made of fiber reinforced resin that extends in parallel to the axial direction of the filtration portion is welded to at least one of the radially inner side and the radially outer side of the filtration portion. The intake water filter described. Outside the filtration part in the radial direction, there is an outer filtration part formed into a cylindrical shape in which a material having a trapezoidal cross section, a triangular shape, or a rectangular shape is spirally wound with the same gap as the material of the filtration part. Provided,
As the material of the outer filtration part, the same long fiber reinforced resin wire bundle as the material of the filtration part is used,
The said outer side filtration part is formed in an annular | circular shape seeing from the axial center direction, and the radial inside is welded with respect to the radial direction outer side of the said filtration part. Water intake filter. A material forming step of impregnating a resin into a long fiber bundle to form a material composed of a long fiber reinforced resin wire bundle having a trapezoidal cross section, a triangular cross section, or a rectangular cross section;
A spiral body forming step in which the material is spirally wound around the mandrel via a guide provided on the mandrel to form a cylindrical spiral body; and
A filtration part forming step of curing the helical body on the mandrel to form a cylindrical filtration part;
The manufacturing method of the intake filter characterized by comprising. The mandrel can be driven to rotate in one direction around its axis,
6. In the spiral body forming step, the mandrel is rotationally driven around an axis, and the material is spirally wound around the mandrel to form a cylindrical spiral body. The manufacturing method of the water intake filter as described in 1 .. A long fiber reinforced resin wire forming step of forming a long fiber reinforced resin wire impregnated with a resin in a long fiber bundle;
A long fiber reinforced resin wire bundle, which is an assembly of the long fiber reinforced resin wires, is wound around the mandrel a plurality of times in a spiral manner with a gap around the mandrel via a guide provided on the mandrel. A helical body forming step of forming a cylindrical helical body wrapped around the material comprising:
A filtration part forming step of curing the helical body on the mandrel to form a cylindrical filtration part;
The manufacturing method of the intake filter characterized by comprising.   The water intake filter manufacturing method according to claim 7, wherein in the long fiber reinforced resin wire forming step, the long fiber bundle is impregnated with resin to form a long fiber reinforced resin wire having a trapezoidal, triangular, or rectangular cross section. Method. The mandrel can be driven to rotate in forward and reverse directions around its axis.
In the helical body forming step, the mandrel is driven to rotate in the positive direction around the axial center so that a gap is formed around the mandrel and the long fiber reinforced resin wire is wound spirally, and then the mandrel is rotated around the axial center. The long fiber reinforced resin wire bundle, which is an assembly of the long fiber reinforced resin wires, is repeatedly rotated in a reverse direction to form a gap around the mandrel and spirally wound the long fiber reinforced resin wire. The manufacturing method of the water intake filter of Claim 7 or Claim 8 which forms the cylindrical spiral body which wound the raw material which consists of. The mandrel includes a groove that extends in parallel with the axial direction of the mandrel and accommodates a fiber reinforced resin support member;
6. In the spiral body forming step, when the spiral body is formed on the mandrel, the support member accommodated in the groove of the mandrel is welded radially inward of the spiral body. The manufacturing method of the water intake filter as described in any one of Claims 9-9. The material is spirally wound around the filtration unit cured on the mandrel via the guide with the same gap as that formed therein to form a cylindrical outer spiral body on the radially outer side of the filtration unit. An outer spiral body forming step,
An outer filtration part forming step of curing the outer spiral body on the radially outer side of the filtration part to form a cylindrical outer filtration part; and
The manufacturing method of the water intake filter as described in any one of Claims 5-10 which has comprised. The mandrel is divided so that the diameter can be reduced,
In the filtration part forming step, after the filtration part is cured on the mandrel, the mandrel is divided and reduced in diameter, and the filtration part is detached from the mandrel. The manufacturing method of the water intake filter as described in any one. A material forming apparatus for impregnating a long fiber bundle with a resin to form a material composed of a long fiber reinforced resin wire bundle having a trapezoidal cross section, a triangular cross section, or a rectangular cross section;
A mandrel around which the material formed by the material forming device is wound;
A spiral body forming apparatus that forms a cylindrical spiral body by winding the material spirally with a gap around the mandrel;
With
An apparatus for manufacturing a water intake filter, characterized in that a helical body obtained by spirally winding the material around the mandrel is cured on the mandrel to form a cylindrical filtration part. The mandrel is configured to be rotatable in one direction around its axis,
When the spiral body is formed by the spiral body forming device, the mandrel is rotationally driven around the axis, and the material is spirally wound by the spiral body forming device with a gap around the mandrel. The water intake filter manufacturing apparatus according to claim 13, wherein a cylindrical spiral body is formed. A long fiber reinforced resin wire forming apparatus for forming a long fiber reinforced resin wire impregnated with a resin in a long fiber bundle;
A mandrel for winding the long fiber reinforced resin wire formed by the long fiber reinforced resin wire forming device;
A tube in which the long fiber reinforced resin wire is wound around the mandrel in a spiral manner a plurality of times, and a material made of a long fiber reinforced resin wire bundle, which is an aggregate of the long fiber reinforced resin wires, is wound around the tube. A spiral body forming device for forming a spiral body;
With
An apparatus for manufacturing a water intake filter, comprising: a helical body formed by spirally winding the long-fiber-reinforced resin wire around the mandrel; and curing the helical body on the mandrel to form a cylindrical filtration part.   The said long fiber reinforced resin wire forming apparatus manufactures the water intake filter according to claim 15, wherein the long fiber bundle is impregnated with resin to form a long fiber reinforced resin wire having a trapezoidal shape, a triangular shape, or a rectangular shape. apparatus. The mandrel is configured to be rotatable in forward and reverse directions around its axis.
When the spiral body is formed by the spiral body forming apparatus, the mandrel is rotationally driven in the positive direction around the axis, and the long fiber reinforced resin wire is wound spirally with a gap around the mandrel. The assembly of the long fiber reinforced resin wires is repeatedly performed by rotating the mandrel around the axis in the reverse direction and repeatedly winding the long fiber reinforced resin wire spirally with a gap around the mandrel. The manufacturing apparatus of the intake filter of Claim 15 or Claim 16 which forms the cylindrical spiral body which wound the raw material which consists of a certain long fiber reinforced resin wire bundle. The mandrel includes a groove that extends in parallel with the axial direction of the mandrel and accommodates a fiber reinforced resin support member;
The said support member accommodated in the groove | channel of the said mandrel is welded to the radial inside of the said helical body when forming a helical body with the said helical body formation apparatus. The manufacturing apparatus of the intake filter as described in any one.

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