• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a method of manufacturing the FRP diaphragm valve. According to the present invention, the FRP molding material is laminated on the outer surface of the first mold 40 of the lower body 20, but the molding groove 46 is formed by laminating only a part of the flange thickness on the circular groove 43. Molding; Stack-molding the FRP molding material on the outer surface of the second mold 50; When the first mold 40 and the second mold 50 are combined, the upper flow path 23 forming layer 46 of the first mold 40 and the straight flow path 27 forming layer of the second mold 50 ( The molding layer 56 of the straight channel 27 of the second mold 50 or the molding layer 46 of the subflange 23 of the first mold 40 is formed such that a gap d is formed between the molds 56 and 56. Cutting; The gap filling layer 48 is formed by partially forming a molding material on the upper surface of the upper flange 23 forming layer 46 of the first mold 40 and before the gap filling layer 48 is cured. Coupling the mold 40 and the second mold 50 to each other; Provided is a method for manufacturing an FRP diaphragm valve, characterized in that the FRP molding material is laminated on the entire outer surface including the connecting portion of the first mold 40 and the second mold 50.
    公开号:KR19990046752A
    申请号:KR1019990014300
    申请日:1999-04-21
    公开日:1999-07-05
    发明作者:황태일
    申请人:황태일；
    IPC主号:
    专利说明:

    Manufacturing method of F. R. P diaphragm valve {Method of forming FRP diaphragm valve}
    The present invention relates to a method for manufacturing an FRP diaphragm valve, and more particularly, to a method for forming the body of the diaphragm valve as an integral structure to FRP.
    1 and 2 show the structure of the diaphragm valve, as shown, the upper body 10 of the dome-shaped, and the lower body 20 formed with a straight pipe, the upper part through the diaphragm 18 The lower flange 11 of the body 10 and the upper flange 23 of the lower body 20 are in contact with each other to take a bolted configuration in the fastening hole (19). A stem 13 vertically penetrates the upper body 10, a handle 12 is mounted to the stem 13, and a nut 14 is fastened to an upper end of the stem 13. And the rubber diaphragm 18 which is displaced in the up-down direction by the press plate 16 is attached to the lower end of the stem 13. In addition, the lower body 20 is provided with both side flanges 21 to which the connecting body is coupled, the inner flow path 25 is bent upward by the partition wall 26 through the gap between the lower diaphragm 18 Communicating.
    The diaphragm valve having such a structure is generally manufactured by casting, and such a casting diaphragm valve has a problem in that it is heavy in weight and has low durability due to poor corrosion resistance and chemical resistance. Therefore, although a resin valve made of light and good corrosion resistance has been proposed, the conventionally known PVC valve has a problem of excellent moldability but low pressure resistance and poor acid resistance and heat resistance.
    On the other hand, while FRP has sufficient rigidity and is relatively lighter than casting products and has excellent corrosion resistance and chemical resistance, the valve of the type shown in FIG. 1 is difficult to coat resin material with rollers in the gap space between flanges. Until now, it has been known that it is impossible to integrally form such diaphragm valves by hand by FRP material having corrosion resistance.
    SUMMARY OF THE INVENTION The present invention has been proposed in view of the manufacturing problems of the conventional diaphragm valve as described above, and is intended to provide a method of integrally forming the diaphragm valve with FRP material having excellent mechanical properties and corrosion resistance.
    1 and 2 is an external view and a cross-sectional view of the diaphragm valve
    3 to 8 is a manufacturing process of the valve body according to the present invention
    <Description of the symbols for the main parts of the drawings>
    10. Upper Body 20. Lower Body
    21. Side flange 23. Upper flange
    40. First frame 48. Gap filling layer
    50. The second mold
    According to the present invention, a lower body 20 including a dome-shaped upper body 10 having a lower flange 11 formed at a lower end thereof, and a side flange 21 and an upper flange 23 and having a flow path 25 open at both sides thereof. And the diaphragm 18 which is sandwiched between the lower flange 11 of the upper body 10 and the upper flange 23 of the lower body 20 and bolted to the fastening hole 19, and the upper body ( A stem 13 having a pressing plate 16 for displacing the diaphragm 18 at a lower end thereof, with a handle 12 mounted in the middle thereof, and vertically penetrating through 10). The flow path 25 has a side flange 21. The lower body 20 of the diaphragm valve consisting of a curved flow passage 28 which is partitioned by a straight flow passage 27 connected to the c) and a curved partition 26 connected to the diaphragm 18 and communicates through the lower space of the diaphragm 18 is connected to the FRP. In the molding method,
    The outer surface of the first mold 40 including the disk mold 42 having the circular groove 43 for forming the upper flange 23 of the lower body 20 and the elbow mold 44 for forming the curved flow path 28. Forming a molding layer 46 by laminating a FRP molding material to the circular groove 43 by laminating only a part of a flange thickness on the circular groove 43;
    Laminating the FRP molding material on the outer surface of the second mold 50 including the disk mold 52 having the circular groove 53 for forming the side flange 21 and the cylindrical mold 54 for forming the straight channel 27. Molding;
    When the first mold 40 and the second mold 50 are coupled, the upper flow path 23 forming layer 46 of the first mold 40 and the straight flow path 27 forming layer of the second mold 50 are formed. The forming layer 56 of the straight channel 27 of the second mold 50 or the forming layer of the upper flange 23 of the first mold 40 so that a gap d is formed between the first mold 40 and the second mold 50. ));
    The gap filling layer 48 is formed by partially stacking a molding material on the upper surface of the upper flange 23 forming layer 46 of the first mold 40 and before the gap filling layer 48 is cured. Coupling the first mold 40 and the second mold 50 to each other;
    Provided is a method for manufacturing an FRP diaphragm valve, characterized in that the FRP molding material is laminated on the entire outer surface including the connecting portion of the first mold (40) and the second mold (50).
    Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention. Referring to FIGS. 3 and 4, a first mold 40 and a second mold 50 are provided, and the first mold 40 has a circular mold 43 having a circular groove 43 for forming the upper flange 23. 42 and the elbow frame 44 for forming the curved flow path 28, and the second mold 50 has a disk-shaped frame 52 and a straight channel 27 formed with a circular groove 53 for forming the side flange 21. ) A cylindrical frame 54 for molding.
    According to the present invention, first, as shown in FIG. 3, an FRP molding material, that is, a fiber mat and a resin layer is laminated on the outer surface of the first mold 40 (step A). At this time, the circular groove 43 is formed only a part of the final thickness of the upper flange 23, the forming layer 46, preferably about 1/3 to 1/2 of the thickness. Meanwhile, as shown in FIG. 4, the FRP molding material is laminated on the outer surface of the second mold 50 (step B). The order of steps A and B can be reversed or performed in parallel.
    Before joining the partially molded first mold 40 and the second mold 50, as shown in Fig. 5, in order to prevent the mold from interfering, the parts to be mutually interfered at the time of joining are cut off. (Step C). Preferably, the shaping layer 56 of the straight channel 27 of the second mold 50 is cut flat to the required depth. However, instead, the upper flange 23 forming layer 46 that interferes with or is adjacent to the forming layer 56 may be cut. The depth of cut allows the gap d between about 3 to 5 mm to be formed. Next, as shown in FIG. 5, the gap filling layer 48 is formed by partially stacking the fiber mat and the impregnated resin on the upper surface of the upper flange 23 forming layer 46 of the first mold 40. .
    As shown in FIG. 6, before the gap filling layer 48 is cured, the first mold 40 and the second mold 50 are fastened with the fastening bolts 58. At this time, while the gap layer conductive layer 48 is pressed and pressed, the first mold 40 and the second mold 50 are integrally formed in this portion (step D). At this time, in order to integrally mold the connecting portion of the mold, as shown in FIG. 6, the stepped portion 61 is cut and processed at the connecting portion before or after joining the mold.
    Next, as shown in FIG. 7, the FRP molding material is sufficiently laminated on the entire outer surface including the connection portion between the first mold 40 and the second mold 50 to form an integral part (step E). At this time, the remaining thickness portion of the shaping layer 46 of the upper flange 23 is also laminated. Integrality is strengthened by laminating a resin layer thereon. Then, in order to form the reinforcing ribs 26 as necessary, the pieces of preformed FRP pieces are integrally molded.
    Next, as shown in FIG. 8, the fastening bolts 58 are folded to remove the second mold 50, and the first mold 40 is removed to complete molding of the lower body 20 of the diaphragm valve. If necessary, post-processing such as surface polishing may be performed.
    According to the present invention described above, after forming a diaphragm valve having a narrow and closed space part, which is difficult to insert a roller for impregnating coating of the FRP material, such as the gap space between the flanges, in each mold part of the FRP molding material After cutting the interference part and applying the gap filler, the mold is joined before the part is cured, and the entire outer surface is integrally laminated to manufacture a FRP diaphragm valve excellent in sufficient rigidity, corrosion resistance, chemical resistance and heat resistance. Can be.
    权利要求:
    Claims (1)
    [1" claim-type="Currently amended] A lower body 20 including a dome-shaped upper body 10 having a lower flange 11 formed at a lower end thereof, a side flange 21 and an upper flange 23 and having a flow path 25 open to both sides, and an upper body The diaphragm 18 which is sandwiched between the lower flange 11 of the 10 and the upper flange 23 of the lower body 20 and fastened to the diaphragm 18 at the fastening hole 19 and vertically penetrates the upper body 10. And a stem 13 in which a handle 12 is mounted in the middle and a pressing plate 16 for displacing the diaphragm 18, and the flow path 25 is a straight line connected to the side flange 21. In the method for forming the lower body 20 of the diaphragm valve consisting of a curved flow path 28 which is partitioned by the flow path 27 and the curved partition wall 26 and communicated through the lower space of the diaphragm 18, ,
    The outer surface of the first mold 40 including the disk mold 42 having the circular groove 43 for forming the upper flange 23 of the lower body 20 and the elbow mold 44 for forming the curved flow path 28. Forming a molding layer 46 by laminating a FRP molding material to the circular groove 43 by laminating only a part of a flange thickness on the circular groove 43;
    Laminating the FRP molding material on the outer surface of the second mold 50 including the disk mold 52 having the circular groove 53 for forming the side flange 21 and the cylindrical mold 54 for forming the straight channel 27. Molding;
    When the first mold 40 and the second mold 50 are coupled, the upper flow path 23 forming layer 46 of the first mold 40 and the straight flow path 27 forming layer of the second mold 50 are formed. The forming layer 56 of the straight channel 27 of the second mold 50 or the forming layer of the upper flange 23 of the first mold 40 so that a gap d is formed between the first mold 40 and the second mold 50. ));
    The gap filling layer 48 is formed by partially stacking a molding material on the upper surface of the upper flange 23 forming layer 46 of the first mold 40 and before the gap filling layer 48 is cured. Coupling the first mold 40 and the second mold 50 to each other;
    Method for manufacturing a FRP diaphragm valve characterized in that the FRP molding material is laminated on the entire outer surface including the connecting portion of the first mold (40) and the second mold (50).
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    同族专利:
    公开号 | 公开日
    KR100315660B1|2001-11-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1999-04-21|Application filed by 황태일
    1999-04-21|Priority to KR1019990014300A
    1999-07-05|Publication of KR19990046752A
    2001-11-30|Application granted
    2001-11-30|Publication of KR100315660B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019990014300A|KR100315660B1|1999-04-21|1999-04-21|Method of forming FRP diaphragm valve|
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