WO2019220604A1 - Structure de maintien d'élément de tuyau, outil de fermeture d'extrémité et outil de raccordement - Google Patents

Structure de maintien d'élément de tuyau, outil de fermeture d'extrémité et outil de raccordement Download PDF

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Publication number
WO2019220604A1
WO2019220604A1 PCT/JP2018/019196 JP2018019196W WO2019220604A1 WO 2019220604 A1 WO2019220604 A1 WO 2019220604A1 JP 2018019196 W JP2018019196 W JP 2018019196W WO 2019220604 A1 WO2019220604 A1 WO 2019220604A1
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WO
WIPO (PCT)
Prior art keywords
holding structure
housing
piping member
resin
piping
Prior art date
Application number
PCT/JP2018/019196
Other languages
English (en)
Japanese (ja)
Inventor
晴也 溜渕
Original Assignee
ミライアル株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ミライアル株式会社 filed Critical ミライアル株式会社
Priority to PCT/JP2018/019196 priority Critical patent/WO2019220604A1/fr
Publication of WO2019220604A1 publication Critical patent/WO2019220604A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/32—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses comprising parts outside the hoses only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/02—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined
    • F16L37/04—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an elastic outer part pressing against an inner part by reason of its elasticity
    • F16L37/05—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an elastic outer part pressing against an inner part by reason of its elasticity tightened by the pressure of a mechanical element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/115—Caps

Definitions

  • the present invention relates to a piping member holding structure for holding a resin piping member, and an end sealing tool and a connecting tool having the piping member holding structure, and particularly suppresses the occurrence of damage to the resin piping member.
  • maintain resin piping members effectively is proposed.
  • Resin piping such as chemical transport lines used in various industries is configured by combining a plurality of resin piping members including a resin tube member made of a thermoplastic resin or other resin material and a resin pipe joint. .
  • a so-called one-touch joint or a flare-type or sleeve-type mechanical joint is connected to a resin piping member, and the resin piping member is held by these joints.
  • the end of the piping member was sealed or the two resin piping members were connected to each other.
  • a metal fitting that can be referred to as a lock crow or a lock ring that touches the resin pipe member in order to hold the resin pipe member is used to connect the contact portion of the resin pipe member.
  • An object of the present invention is to provide a holding structure for a piping member, an end seal and a connector.
  • the holding structure for a piping member is a structure for holding a resin piping member, has a housing in which an internal space is formed, a through hole through which the resin piping member passes, and is fitted into the housing by a screw.
  • An insertion member that is inserted into the housing, and a cylindrical elastic member that is disposed in the internal space of the housing and that receives the resin piping member that has passed through the through-hole of the insertion member.
  • the cylindrical elastic member is pressed in the axial direction in the internal space by the insertion member inserted into the inside and elastically deformed inward, and is configured to press the resin piping member from the outer peripheral side. .
  • the inner surface of the inner space of the housing has a shape that follows the outer peripheral surface of the cylindrical elastic member.
  • the bottom surface of the internal space of the housing has a shape that follows the other end surface of the cylindrical elastic member opposite to the one end surface pressed by the insertion member. .
  • the bottom surface of the internal space of the housing is in a holding state of the resin piping member, and the other end surface of the cylindrical elastic member is opposite to the one end surface pressed by the insertion member. It is preferable to contact the whole.
  • the entire inner peripheral surface of the cylindrical elastic member is in contact with the outer peripheral surface of the resin piping member while the resin piping member is held.
  • the tubular elastic member is filled in the internal space of the housing while the resin piping member is held.
  • the cylindrical elastic member preferably has a cylindrical shape and is made of a rubber material or an elastomer material.
  • the housing and the insertion member are preferably each made of a resin material.
  • the housing includes an exterior part in which the internal space is formed, and the exterior part opens to receive the insertion member; and the reception end A female screw part formed on at least a part of the inner surface of the exterior part from the first part to the inner space, and the insertion member is provided around the through hole with the female thread part of the outer part of the housing.
  • a male screw part fitted to the male screw part and a pressurizing tip part which is formed on the tip side in the axial direction from the male screw part and comes into contact with the cylindrical elastic member.
  • at least one of the pressure front end portion and the bottom surface of the internal space of the housing has a tapered surface that is inclined in a direction protruding in the axial direction toward the outer peripheral side.
  • An end seal of a piping member according to the present invention has any one of the above-described holding structures for a piping member, and a stopper deeper than the internal space of the housing prevents further progress of the resin piping member. It is blocked by the wall.
  • the pipe member connector according to the present invention has a first holding structure and a second holding structure for a piping member, and each of the first holding structure and the second holding structure is a holding structure for any one of the piping members described above.
  • the first holding structure and the second holding structure are connected to each other at the end of each housing opposite to the side where the insertion member is inserted, and the first holding structure and A communication passage that connects the insides of the respective housings is formed deeper than the internal space of each housing of the second holding structure.
  • the cylindrical elastic member is pressed in the axial direction within the internal space by the insertion member inserted into the housing and elastically deformed inward, and the resin piping member is pressed from the outer peripheral side.
  • the resin piping member can be effectively held while suppressing the occurrence of damage to the resin piping member.
  • FIG. 6 is a transparent perspective view of the connector of FIG. 5. It is a figure which shows the state of the edge part of the resin-made tube members after attaching the one-touch coupling of a comparative example. It is a figure which shows the state of the edge part of the resin-made tube members after attaching the edge part sealing tool of an Example.
  • the piping member holding structure 1 illustrated in FIGS. 1 and 2 holds, for example, a resin tube member 61 and other resin piping members 61.
  • positioned in the space 2a and receives the resin-made piping members 61 which passed the through-hole 3a of the insertion member 3 is provided inside.
  • the cylindrical elastic member 4 disposed in the internal space 2 a of the housing 2 is inserted in the axial direction that is the direction of the central axis C by the insertion member 3 that is inserted while being screwed into the housing 2.
  • the insertion member 3 that is inserted while being screwed into the housing 2.
  • the resin piping member 61 positioned inside the cylindrical elastic member 4 is pressed from the outer peripheral side by the cylindrical elastic member 4 elastically deformed on the outer peripheral side, and is held there. Will be.
  • the resin-made piping member 61 is not in contact with the metal fittings such as the one-touch joint and the lock joint of the mechanical joint described above, but is in contact with the elastically deformable cylindrical elastic member 4, and the cylindrical elastic member 4 Since it is pressed from the side, the resin piping member 61 can be effectively held while suppressing the occurrence of damage to the resin piping member 61.
  • the resin piping member 61 is, for example, a resin tube having a straight or curved straight or curved pipe shape in which an internal flow path through which a liquid such as a chemical solution or a gas or other fluid flows is formed as shown in the figure. Member or elbow that is not shown, but the internal flow path bends in a substantially L shape, cheese that has a T-shape by branching the internal flow path, or the cross-sectional area of the internal flow path changes midway Or other resin pipe joints.
  • the resin tube member is formed by extrusion molding, and the resin pipe joint is formed by injection molding.
  • the resin piping member 61 may be made of a resin material such as perfluoroalkoxyalkane (PFA), perfluoroethylene propene copolymer (FEP), or polyetheretherketone (PEEK), for example.
  • PFA perfluoroalkoxyalkane
  • FEP perfluoroethylene propene copolymer
  • PEEK polyetheretherketone
  • Such a resin-made piping member 61 may cause a serious problem when a fluid or gas such as a chemical solution flowing inside the resin-made piping member 61 leaks. It may be subjected to a test to confirm the above.
  • the holding structure 1 of the embodiment shown in FIGS. 1 to 3 forms a part of an end seal 11 that can be used for such a test or the like.
  • the illustrated end seal 11 has the holding structure 1 as described above, and the deep portion of the inner space 2a of the housing 2 at the bottom of the bottom surface 2b is closed.
  • a stopper wall portion 2 c is formed in which the end portion of the resin piping member 61 abuts and prevents further progress of the resin piping member 61.
  • the cylindrical elastic member 4 that is elastically deformed around the end of the resin piping member 61 is filled in the internal space 2 a whose volume is reduced by the insertion of the insertion member 3.
  • the flow of the fluid flowing to the part is obstructed around the end part.
  • the edge part of the resin-made piping members 61 can be sealed.
  • the inner surface 2d of the inner space 2a of the housing 2 is preferably parallel to the outer peripheral surface 4a of the cylindrical elastic member 4 and has a shape that follows the outer peripheral surface 4a.
  • the inner surface 2d of the internal space 2a is formed in a cylindrical shape that substantially matches the outer peripheral surface 4a of the cylindrical elastic member 4.
  • the bottom surface 2b of the internal space 2a of the housing 2 is a surface parallel to the other end surface 4c of the cylindrical elastic member 4 that is located on the opposite side to the one end surface 4b pressed by the insertion member 3 in the axial direction. It is preferable to have a shape that follows the other end surface 4c.
  • the bottom surface 2b of the internal space 2a and the other end surface 4c of the cylindrical elastic member 4 are both parallel to a plane perpendicular to the central axis C.
  • the other end surface 4 c of the cylindrical elastic member 4 is in contact with the bottom surface 2 b of the internal space 2 a of the housing 2, and the inner peripheral surface 4 d of the cylindrical elastic member 4.
  • the cylindrical elastic member 4 is preferably filled in the internal space 2a of the housing 2.
  • “filling” means that the cylindrical elastic member 4 has no gap in the area defined by the bottom surface 2b and the inner surface 2d of the internal space 2a and the pressurizing tip of the insertion member 3 in the internal space 2a. Means being stuffed.
  • the tubular elastic member 4 is disposed by the resin piping member 61 when the insertion member 3 is pressurized by substantially eliminating a space margin where the cylindrical elastic member 4 does not exist.
  • the holding force of the resin piping member 61 is increased and the end portion of the resin piping member 61 is sufficiently sealed.
  • the cylindrical elastic member 4 has a cylindrical shape in which the one end surface 4b and the other end surface 4c are in an annular shape parallel to a plane perpendicular to the central axis C and have a constant thickness in the axial direction. It is preferable to do. Further, the inner diameter of the cylindrical elastic member 4 is set to the same size as the inner diameter of the through hole 3 a of the insertion member 3 in a state where the inner diameter of the tubular member 61 is not pressurized by the insertion member 3. It is preferable from the viewpoint of passing smoothly.
  • the holding structure 1 does not have a portion that enters the cylindrical elastic member 4. Therefore, according to the holding structure 1, in the holding state of the resin piping member 61, there is an adverse effect that the internal flow path of the cylindrical elastic member 4 is greatly narrowed by the portion entering the resin piping member 61. Absent.
  • the housing 2 includes an exterior portion 5 having an inner space 2a and having a substantially cylindrical shape. Has a receiving end portion 5a that opens to receive the insertion member 3, and a female screw portion 5b formed on at least a part of the inner surface of the exterior portion 5 from the receiving end portion 5a to the internal space 2a. .
  • the insertion member 3 inserted into the inside of the housing 2 is provided around the through hole 3a in correspondence with the female screw portion 5b of the exterior portion 5, and has a male screw portion 3b fitted to the female screw portion 5b. And a pressurizing tip portion 3 c that is formed on the tip end side in the axial direction from the male screw portion 3 b and abuts against the cylindrical elastic member 4.
  • the insertion member 3 further includes a diameter-enlarging flange portion 3d having an outer diameter larger than that of the male screw portion 3b at the end opposite to the pressing tip portion 3c in the axial direction.
  • the user can hold the outer peripheral surface of the exterior portion 5 and the diameter-enlarged flange portion 3 d of the insertion member 3 to attach / detach the insertion member 3 to / from the housing 2.
  • the insertion member 3 shown in the figure has a tapered surface 3e that inclines in a direction in which the pressurizing tip 3c protrudes in the axial direction toward the outer peripheral side.
  • the tapered surface 3e has a shape that is located inwardly in the axial direction toward the inner peripheral side.
  • the tapered surface 3e of the insertion member 3 is inclined so that the bottom surface 2b of the internal space 2a of the housing 2 protrudes in the axial direction toward the outer peripheral side. It can also be.
  • the direction of the reaction force that the cylindrical elastic member 4 pressed by the insertion member 3 receives from the bottom surface 2b of the internal space 2a is caused by the fact that the bottom surface 2b has a tapered surface. Since it becomes 61 side, the retention strength of the resin piping member 61 can be raised.
  • the surface portion where the end face of the end portion of the resin piping member 61 abuts out of the most deeply located surface of the internal space 2a is defined as the abutting surface 2e, and the outer surface portion is defined as the bottom surface 2b.
  • the contact surface 2e is not tapered and is parallel to a plane orthogonal to the central axis C.
  • the taper angle of the tapered surface 3e of the insertion member 3 and / or the bottom surface 2b, which is the tapered surface of the internal space 2a, should be in the range of 10 ° to 45 ° with respect to the plane perpendicular to the central axis C. preferable. If this taper angle is too large, there is a concern that the elastic member may be damaged or the pressure applied may be reduced.
  • an inner surface level difference 5 c is provided between the female screw portion 5 b and the internal space 2 a on the inner surface of the exterior portion 5 of the housing 2, and the male screw portion 3 b and the pressure tip portion 3 c are provided on the outer surface of the insertion member 3.
  • the corresponding outer surface step 3f is provided between the surface shape and the surface shape of the inner surface step 5c, the outer surface step 3f, and the like can be determined as appropriate for reasons necessary for the design.
  • a female screw portion 5b is provided on the housing 2 side and a male screw portion 3b is provided on the insertion member 3 side.
  • a male screw portion 3b is provided on the insertion member 3 side.
  • the housing 22 of the holding structure 21 has a male screw portion 25b protruding toward the insertion member 23, and a passage leading to the internal space 22a is formed inside the male screw portion 25b.
  • the insertion member 23 of the holding structure 21 surrounds the periphery of the male screw portion 25b of the housing 22, and is fitted into the male screw portion 25b.
  • the insertion member 23 extends inside the female screw portion 23b and is inserted into the passage of the housing 22.
  • a pressurizing tip 23c are substantially the same as those shown in FIGS.
  • the holding structures 31 and 41 constitute a part of the connecting member 51 of the piping member, and the first holding structure 31 and the second holding structure 41 as two holding structures are connected to each other. Eggplant.
  • first holding structure 31 and the second holding structure 41 included in the connection tool 51 have substantially the same configuration as that shown in FIGS. Are integrally connected to each other, for example, at the ends of the respective housings 32 and 42 opposite to the side where the insertion members 33 and 43 are inserted in the axial direction.
  • a communication passage 52 that connects the interiors of the housings 32 and 42 is formed in a deep part deeper than the internal spaces 32a and 42a of the housings 32 and 42.
  • the communication passage 52 has a cross-sectional area similar to that of the inside of the cylindrical elastic members 34 and 44 when not pressurized. That is, since the inner diameter does not change between the inside of the cylindrical elastic members 34 and 44 and the communication passage 52, the end portions of the resin piping members 61a and 61b passed through the inside of the cylindrical elastic members 34 and 44 are It is possible to smoothly enter the communication passage 52.
  • the two resin-made piping members 61a, 61b are respectively connected to the insertion members 33, 43 of the connecting tool 51. Insert into the through holes 33a, 43a. Then, by causing the respective end portions of the resin piping members 61a and 61b to advance further back, the respective end portions are communicated as shown in FIG. 5 after passing through the respective cylindrical elastic members 34 and 44. They face each other in the passage 52.
  • the insertion members 33 and 43 are screwed into the corresponding housings 32 and 42, and the cylindrical elastic members 34 and 44 are pressurized by the insertion members 33 and 43. Then, as described above, the cylindrical elastic members 34 and 44 are elastically deformed inward, and the resin-made piping members 61a and 61b are pressed from the outer peripheral side to hold them.
  • the cylindrical elastic members 34 and 44 are filled in the internal spaces 32a and 42a, they also function to seal the periphery of the ends of the resin piping members 61a and 61b. Thereby, even if the end portions of the resin piping members 61a and 61b are not abutted so as to ensure liquid-tightness or air-tightness, the cylindrical elastic members 34 and 44 surround the end portions. Since it is sealed, outflow of liquid or gas to the outer side (insertion member 33, 43 side) from the cylindrical elastic members 34, 44 is prevented. Therefore, the two resin piping members 61a and 61b can be effectively connected.
  • the cylindrical elastic members 4, 34, and 44 may be made of a rubber material or an elastomer material, specifically, a nitrile rubber, a fluoro rubber, or a polyolefin elastomer (POE). preferable.
  • the housings 2, 32, 42 and the insertion members 3, 33, 43 are made of polytetrafluoroethylene (PTFE), perfluoroalkoxyalkane (PFA), perfluoroethylene propene copolymer (FEP), or other resin material. can do.
  • an end seal having a holding structure as shown in FIGS. 1 to 3 was produced.
  • Each of the end seal of this example and the one-touch joint (KQG2H07-00 manufactured by SMC) as a comparative example is attached to the end of a resin tube member as a resin piping member made of PFA. Whether the resin tube member is held and the sealing of the end is affected when the internal pressure of the resin tube member is increased by sending gas into the resin tube member while holding the tube member A test was conducted to confirm the above.
  • the resin tube member is securely held even when the internal pressure of the resin tube member is increased to 1.0 MPa, and the There was no effect on the sealing of the edges.
  • the resin piping member can be effectively held while suppressing the occurrence of damage to the resin piping member.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)

Abstract

Structure de maintien (1) d'un élément de tuyau pourvue : d'un boîtier (2) qui est une structure pour maintenir un élément de tuyau en résine (61), et dans lequel un espace interne (2a) est formé ; un élément d'introduction (3) qui comporte un trou traversant (3a) pour le passage de l'élément de tuyau en résine (61) et qui est introduit dans le boîtier (2) tout en étant ajusté dans le boîtier (2) au moyen d'une vis ; et un élément élastique tubulaire (4) qui est disposé à l'intérieur de l'espace interne (2a) du boîtier (2) et qui, à l'intérieur, reçoit l'élément de tuyau en résine (61), qui a traversé le trou traversant (3a) de l'élément d'introduction (3). La structure de maintien est configurée de telle sorte que l'élément d'introduction (3), lorsqu'il est introduit dans le boîtier (2), met axialement sous pression l'élément élastique tubulaire (4) à l'intérieur de l'espace interne (2a) et déforme ce dernier élastiquement vers l'intérieur, pressant l'élément de tuyau en résine (61) depuis le côté périphérique extérieur.
PCT/JP2018/019196 2018-05-17 2018-05-17 Structure de maintien d'élément de tuyau, outil de fermeture d'extrémité et outil de raccordement WO2019220604A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/019196 WO2019220604A1 (fr) 2018-05-17 2018-05-17 Structure de maintien d'élément de tuyau, outil de fermeture d'extrémité et outil de raccordement

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Application Number Priority Date Filing Date Title
PCT/JP2018/019196 WO2019220604A1 (fr) 2018-05-17 2018-05-17 Structure de maintien d'élément de tuyau, outil de fermeture d'extrémité et outil de raccordement

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WO2019220604A1 true WO2019220604A1 (fr) 2019-11-21

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE635767C (de) * 1936-09-29 Eisenwerke A G Deutsche Dichtungsring fuer Muffenrohrverbindungen mit Stopfbuechse
FR1025667A (fr) * 1950-10-06 1953-04-17 Fenwick Adaptateur de tubes et en particulier de tubes souples à parois non lisses, sur des éléments de raccordement ou des organes analogues
FR1280119A (fr) * 1960-11-19 1961-12-29 Conducto Raccord pour tubes et gaines de tous genres
GB1126898A (en) * 1966-12-20 1968-09-11 Henderson Henry Morrison Improved seal
DE3546435A1 (de) * 1985-02-02 1986-08-14 Oriplast GmbH Gesellschaft für medizinischen Bedarf, 6680 Neunkirchen Quetschverbinder
JPH07198083A (ja) * 1993-12-18 1995-08-01 Smiths Ind Plc コネクタ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE635767C (de) * 1936-09-29 Eisenwerke A G Deutsche Dichtungsring fuer Muffenrohrverbindungen mit Stopfbuechse
FR1025667A (fr) * 1950-10-06 1953-04-17 Fenwick Adaptateur de tubes et en particulier de tubes souples à parois non lisses, sur des éléments de raccordement ou des organes analogues
FR1280119A (fr) * 1960-11-19 1961-12-29 Conducto Raccord pour tubes et gaines de tous genres
GB1126898A (en) * 1966-12-20 1968-09-11 Henderson Henry Morrison Improved seal
DE3546435A1 (de) * 1985-02-02 1986-08-14 Oriplast GmbH Gesellschaft für medizinischen Bedarf, 6680 Neunkirchen Quetschverbinder
JPH07198083A (ja) * 1993-12-18 1995-08-01 Smiths Ind Plc コネクタ

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