WO2002048587A1 - Soupape d'arret pour peinture - Google Patents

Soupape d'arret pour peinture Download PDF

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Publication number
WO2002048587A1
WO2002048587A1 PCT/JP2001/009644 JP0109644W WO0248587A1 WO 2002048587 A1 WO2002048587 A1 WO 2002048587A1 JP 0109644 W JP0109644 W JP 0109644W WO 0248587 A1 WO0248587 A1 WO 0248587A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
paint
valve shaft
elastic member
shaft
Prior art date
Application number
PCT/JP2001/009644
Other languages
English (en)
Japanese (ja)
Inventor
Hidetsugu Matsuda
Original Assignee
Abb K. K.
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 Abb K. K. filed Critical Abb K. K.
Publication of WO2002048587A1 publication Critical patent/WO2002048587A1/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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00—Spindle sealings
    • F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
    • F16K41/103—Spindle sealings with diaphragm, e.g. shaped as bellows or tube the diaphragm and the closure member being integrated in one member

Definitions

  • the present invention relates to a paint on-off valve suitably used for controlling, for example, a flow of a paint, a solvent and the like by a pilot.
  • an air-driven open / close valve that supplies and shuts off the paint on the tank side to the coating machine side by opening and closing the paint passage using pilot air or the like.
  • the on-off valve for paint of this type includes a casing in which a paint passage and a piston accommodating chamber are provided with a valve shaft ⁇ fitting hole interposed therebetween, and a casing accommodating chamber of the casing.
  • a piston which is slidably provided in the piston and defines the piston housing chamber as an air chamber and a spring chamber, and is provided so as to extend in an axial direction into a fitting hole of the valve shaft of the casing.
  • a valve shaft having a base end connected to the piston and a distal end protruding into the paint passage; and a paint passage being opened by being provided at the distal end of the valve shaft and being displaced integrally with the valve shaft.
  • a valve body to be closed, and a biasing spring provided in a spring chamber of the casing to bias the piston in a valve closing direction of the valve body.
  • valve shaft is made of a metal rod or the like, and is slidably provided in the valve shaft ⁇ fitting hole of the casing.
  • the base end of the valve stem projects from the fitting hole of the valve stem toward the air chamber, and is connected to the piston.
  • the tip end of the valve shaft is on the paint passage side.
  • a valve element which is detachably seated on the valve seat on the paint passage side (for example, Japanese Patent Application Laid-Open No. 7-253176).
  • the piston is piled on the biasing spring by the pressure of the pilot air and moves in the valve opening direction.
  • the valve slides and the valve shaft and the valve element are displaced in the axial direction following this piston.
  • the valve element separates from the valve seat in the paint passage and opens, and the paint supplied from the external paint supply source into the paint passage flows out toward the coating machine or the like.
  • the valve shaft of the casing is formed in the paint passage and the air chamber, so that the valve shaft is not provided.
  • a U-ring, 0-ring, etc. are provided in the fitting hole to prevent the paint in the paint passage from entering the air chamber from between the peripheral wall of the valve shaft and the outer periphery of the valve shaft.
  • a seal member is provided.
  • a partition member called a bellows or a diaphragm is used to surround a protruding end side of a valve shaft protruding into a paint passage and a valve shaft ⁇ fitting hole. It is known that the valve shaft ⁇ fitting hole is blocked from the paint passage.
  • the partition wall member is formed as a bellows-like cylinder made of, for example, a thin resin material, a metal material, or the like, and the base end is attached to the periphery of the fitting hole of the valve shaft, and the distal end is formed of the valve body. It is attached to the outer peripheral side.
  • the sealing members such as the U-ring and the 0-ring gradually deteriorate, so that the valve shaft ⁇ In fitting hole
  • the paint easily penetrates between the seal member and the valve shaft, and the pigment and the like contained in the penetrated paint may gradually adhere and accumulate.
  • the pigment or the like also adheres to this gap, so that the friction shaft of the valve shaft is reduced.
  • valve body may malfunction or the solidified pigment at the deposition area may be peeled off and mixed into the paint, resulting in a problem that reliability and coating quality are reduced.
  • the valve body adheres to the casing. It may be impossible to open and close.
  • the bellows portion has a complicated shape having a plurality of uneven portions.
  • the shape makes it easier for resin components and pigments contained in the paint to adhere to the concave parts of the bellows part, and these adhered substances are peeled off and mixed into the paint to improve the coating quality. May decrease.
  • the contact area (cleaning area) of the thinner with respect to a complex-shaped bellows portion is increased.
  • the site cannot be efficiently cleaned, and that the paint adheres to the recesses and the like, and that the consumption of the cleaning thinner increases.
  • the present invention has been made in view of the above-described problems of the related art, and an object of the present invention is to reliably block a valve shaft ⁇ fitting hole of a casing from a paint passage so that pigments and the like in the paint can be removed.
  • An object of the present invention is to provide a paint on-off valve that can prevent the paint from remaining on the body side.
  • Another object of the present invention is to provide an on-off valve for paint that has improved maintainability, for example, when the paint passage is cleaned, and has improved durability and reliability.
  • the present invention provides a casing in which a piston storage chamber and a paint passage are provided with a valve shaft ⁇ insertion hole interposed therebetween, and a casing slidable into a piston storage chamber of the casing. And a valve shaft provided so as to extend in the axial direction into the valve shaft of the casing and connected to the piston at the base end and projecting into the paint passage at the distal end. And a poppet valve body provided at the tip end of the valve shaft and opening and closing the paint passage by being displaced integrally with the valve shaft.
  • the valve body is formed of an elastic member which is provided on the outer peripheral side of the valve shaft so as to be extendable and contractible in a retractable state and which expands and contracts following the displacement of the valve shaft.
  • the base end side of the elastic member is the valve shaft. ⁇ ⁇ ⁇ Attach to the casing with the fitting hole closed with respect to the paint passage.
  • the distal end of the member is characterized in configuration formed by providing a valve unit for releasing the valve seat of the paint passage.
  • a tubular elastic member can be provided on the outer peripheral side of the valve shaft so as to be able to expand and contract, and this elastic member can constitute a part or the whole of the poppet valve body. Therefore, the valve shaft ⁇ fitting hole is closed by the elastic member. To shut off the paint passage. Also, when the valve shaft is displaced in the axial direction, the elastic member can expand or compress in the axial direction on the outer peripheral side following the displacement of the valve shaft. There is no need to provide such a part, and the outer surface side can be formed in a smooth shape.
  • the casing body in which the piston accommodating chamber and the paint passage are provided with the retainer fitting portion interposed therebetween, and the casing body is provided so as to fit into the retainer fitting portion of the casing body.
  • a retainer provided with a valve shaft fitting hole for communicating between the paint passage and the piston housing chamber; a piston slidably provided in the housing housing chamber of the casing body;
  • a valve shaft which is provided in the fitting hole of one of the valve shafts so as to pass through in the axial direction, the base end side of which is connected to the piston, and the distal end side of which protrudes into the paint passage;
  • a paint valve which opens and closes the paint passage by being displaced integrally with the valve shaft, wherein the valve valve is provided on the outer peripheral side of the valve shaft.
  • a base end side of the elastic member is sandwiched and attached to the retainer and the casing body with the valve shaft fitting hole closed with respect to the paint passage, and a distal end of the elastic member is formed.
  • a valve portion is provided which is separated from and seated on a valve seat of the paint passage.
  • a tubular elastic member constituting at least a part of the port valve body is provided on the outer peripheral side of the valve shaft so as to be extendable and contractable, and the base end side thereof is provided with a retainer. It can be clamped and mounted between the casing body. As a result, the elastic member closes the valve shaft ⁇ fitting hole and blocks it from the paint passage.
  • valve section according to the present invention is made of another material that is harder than the elastic member.
  • the valve portion of the poppet valve body can be formed of a harder material, and the strength of the valve portion can be increased.
  • the other part of the poppet valve body except for the valve portion is constituted by the elastic member, the valve member is closed while the valve shaft ⁇ fitting hole is closed by the elastic member.
  • the valve portion according to the present invention is integrally formed of the same material as the elastic member. Thereby, the entirety of the poppet valve body including the valve portion can be formed by the elastic member.
  • the valve member can be closed with respect to the valve seat of the paint passage while closing the fitting hole of the valve shaft by the elastic member. It can be elastically detached and seated.
  • the elastic member by forming the elastic member from fluoro rubber, for example, it is possible to increase the durability against a solvent such as thinner contained in the paint and improve the strength thereof. it can.
  • the elastic member according to the present invention is configured as a cylindrical body whose outer peripheral surface is formed as a smooth cylindrical surface. As a result, when the elastic member expands and contracts in the axial direction, it can maintain a state in which the outer peripheral surface is a smooth cylindrical surface. Can be prevented from sticking to the surface.
  • FIG. 1 is a longitudinal sectional view showing a paint on-off valve according to a first embodiment of the present invention.
  • FIG. 2 is an enlarged cross-sectional view of a main part in FIG. 1 showing a valve shaft, a poppet valve body, and the like in an enlarged manner.
  • FIG. 3 is an enlarged cross-sectional view of a main part of the paint opening / closing valve showing a state where the poppet valve body is opened.
  • FIG. 4 is an exploded cross-sectional view showing a state before the poppet valve body is attached to the valve shaft.
  • FIG. 5 is an enlarged sectional view of a main part showing a paint on-off valve according to a second embodiment of the present invention.
  • FIG. 6 is an enlarged sectional view of a main part of the paint opening / closing valve showing a state where the poppet valve body is opened.
  • FIGS. 1 to 4 show a first embodiment of the present invention.
  • an air-driven open / close valve composed of a two-way valve will be described as an example.
  • reference numeral 1 denotes a casing forming an outer shell of a paint on-off valve
  • the casing 1 includes a casing main body 2, a valve seat member 4, a cap 6, a retainer 8, and the like, which will be described later.
  • Reference numeral 2 denotes a casing main body formed into a stepped cylindrical shape by, for example, a metal material or the like.
  • the casing main body 2 is covered on one side in the axial direction by screwing a cap 6, and the other side is described later. It is attached to the manifold block 23 of the company.
  • a stepped hole 3 extending in the axial direction is provided on the inner peripheral side of the casing body 2.
  • the stepped hole 3 is opened at one end face of the casing body 2 and has a cap mounting portion 3 A to which the cap 6 is screwed.
  • a piston storage chamber 3B which is disposed adjacent to the cap mounting portion 3A and in which a piston 13 to be described later is slidably stored, and which is adjacent to the piston storage chamber 3B.
  • the body housing portion 3D and a valve seat mounting portion 3E adjacent to the valve body housing portion 3D and opened to the other end surface of the casing body 2 to which the valve seat member 4 is mounted. .
  • the retainer fitting portion 3C is formed to be larger in diameter than the valve body housing portion 3D, and protrudes radially inward from the other end of the retainer fitting portion 3C.
  • An annular step 3 C 1 is provided.
  • valve seat member mounted on the valve seat mounting portion 3E of the casing body 2, and a valve portion 21 of a pocket valve body 19 to be described later is detached and seated on the valve seat member 4.
  • An annular valve seat 4A is provided, and an outlet 5B of a paint passage 5 described later is provided on the inner peripheral side of the valve seat 4A.
  • Reference numeral 5 denotes a substantially L-shaped paint passage provided in the casing 1, and the paint passage 5 is opened on the outer peripheral side of the casing body 2 and has an inlet 5A through which paint flows in, and a valve seat member. 4 is formed in communication with the valve seat 4A, and the outlet 5B is connected to the inlet 5A through the valve housing 3D.
  • Reference numeral 6 denotes a cap having a cylindrical shape, which is screwed into the cap mounting portion 3 A of the casing 2, and the cap 6 controls a valve opening position of the piston 13.
  • a top part 6 A is provided.
  • a breathing hole 7 that communicates between a spring chamber 16 described below and the outside is provided at one end of the cap 6.
  • the retainer 8 is a cylindrical retainer that forms part of casing 1.
  • the retainer 8 is screwed into a retainer fitting portion 3C of the casing body 2. Further, an inner peripheral side of the retainer 8 is formed so as to penetrate in an axial direction between the paint passage 5 and the piston accommodating chamber 3B so that a valve shaft 18 described later can slide.
  • An annular fitting concave portion 8B into which the 0 flange portion 20B is fitted is provided.
  • the retainer 8 includes a seal member 9 on the inner peripheral side for sealing between a large-diameter shaft portion 18 A of the valve shaft 18 and a peripheral wall of the valve shaft fitting hole 8 A, which will be described later.
  • a seal member 10 on the outer peripheral side for sealing between the outer peripheral side of the retainer 8 and the retainer fitting portion 3C of the casing body 2 is provided.
  • the retainer 8 is provided with a breathing passage 11 that is located closer to the paint passage 5 than the seal member 10 and that opens into the valve shaft fitting hole 8A.
  • the passage 11 communicates with the outside via another breathing passage 12 formed in the casing 2.
  • These breathing passages 11 and 12 communicate a gap formed between the seal member 9 and the elastic member 20 in the valve shaft fitting hole 8A to the outside.
  • Reference numeral 13 denotes a substantially disc-shaped piston slidably provided via a sealing ring 14 in the piston accommodating chamber 3B of the casing body 2, and the piston 13 is a piston.
  • the air chamber 15 is defined as an air chamber 15 and a spring chamber 16.
  • the casing body 2 is provided with a pilot air passage 17 for supplying / discharging the pilot air from the outside into the air chamber 15.
  • Reference numeral 18 denotes a valve shaft which is located in the casing 1 and is displaceably provided in a valve shaft ⁇ fitting hole 8 A of the retainer 8.
  • the valve shaft 18 has a large-diameter shaft portion 18 A that is slidably fitted into the valve shaft ⁇ fitting hole 8 A and whose base end projects toward the air chamber 15.
  • the small diameter shaft portion 18B is located at the distal end side of 8A and has a smaller diameter than the large diameter shaft portion 18A and protrudes into the paint passage 5.
  • a connecting portion 18C formed with a male screw for connecting to the piston 13 by means such as screwing.
  • a male thread 18E to which a valve 21 described later is screwed is provided on the side.
  • Reference numeral 19 denotes a pocket valve element provided on the paint passage 5 side of the casing 1.
  • the poppet valve element 19 has an elastic member 20 and a valve part 21 described later as shown in FIG. It is composed of
  • the poppet valve body 19 opens and closes the paint passage 5 by displacing integrally with the valve shaft 18 following the piston 13. Therefore, when the pilot air is supplied into the air chamber 15, the poppet valve element ⁇ 9
  • Reference numeral 20 denotes an elastic member that constitutes a part of the port valve body 19.
  • the elastic member 20 has the elasticity and elasticity of, for example, fluoro rubber as shown in FIGS. 2 to 4.
  • the valve member 18 is formed in a cylindrical shape, and is fitted to the outer peripheral side of the small diameter shaft portion 18 B of the valve shaft 18.
  • the elastic member 20 is A cylindrical portion 2 OA surrounding the protruding end side outer periphery of the small-diameter shaft portion 18 B of the valve shaft 18 protruding into the paint passage 5 movably in the axial direction; and a base of the cylindrical portion 2 OA.
  • the outer peripheral surface of the cylindrical portion 2OA is formed as a smooth cylindrical cylindrical surface 20A1.
  • the flange portion 20 B is fitted into the fitting recess 8 B of the retainer 8, and at the same time, the step portion 3 C 1 of the retainer fitting portion 3 C and the fitting recess 8 B are fitted.
  • the valve shaft ⁇ fitting hole 8A is closed in a liquid-tight state in cooperation with the cylindrical portion 2OA.
  • valve shaft 18 is fitted to the flange 18 D of the valve shaft 18 in a retaining state. Further, the distal end side of the valve shaft 18 protrudes through the shaft distal end fitting hole 20E of the elastic member 20. Further, a valve portion 21 is fixed to a distal end surface of the cylindrical portion 2OA by a male screw portion 18E of a valve shaft 18.
  • the gap between the shaft tip fitting hole 20 E of the elastic member 20 and the valve shaft 18, and the gap between the tip face of the cylindrical portion 2 OA and the valve portion 21 are made liquid-tight. Is held.
  • paint in the paint passage 5 is prevented from entering the valve shaft ⁇ fitting hole 8A of the retainer 8 via the shaft through hole 20C.
  • the elastic member 20 expands and contracts in the axial direction following the valve shaft 18 when the poppet valve body 19 opens and closes, and as shown in FIGS.
  • the valve shaft ⁇ fitting hole 8A is kept shut off from the paint passage 5 to prevent the paint supplied to the paint passage 5 from entering the valve shaft ⁇ fitting hole 8A.
  • the elastic member 20 has a through hole 20 C fitted into the outer periphery of the small-diameter shaft portion 18 B with a gap, and the enlarged-diameter groove portion 20 D is prevented from coming off by the flange portion 18 D.
  • the elastic member 20 is extended or compressed in the axial direction integrally with the valve shaft 18. That is, the projecting dimension of the cylindrical portion 2OA projecting into the paint passage 5 from the valve shaft ⁇ fitting hole 8A is the projecting dimension L1 when the valve is closed and the projecting dimension L2 when the valve is opened (L1> L2 ).
  • the elastic member 20 has elasticity and elasticity, so that the cylindrical surface 2OA1 on the outer peripheral side of the cylindrical portion 20A has a smooth cylindrical shape. The shape is always maintained.
  • the cylindrical surface 20 A 1 of the elastic member 20 always maintains a curved surface without irregularities by minimizing the contact area with the paint, so that the pigment, the curing agent, etc.
  • a solvent such as thinner, it is possible to easily remove dirt and the like adhered to the cylindrical surface 20A1.
  • Reference numeral 21 denotes a valve portion that constitutes a tip portion of the port valve body 19, and the valve portion 21 is formed in a substantially circular shape by using, for example, a metal material or a resin material that is harder than the elastic member 20. It is formed in a columnar shape, and is screwed and attached to the male thread 18 E of the valve shaft 18. Then, the valve portion 21 follows the axial displacement of the valve shaft 18 to provide a valve seat. It separates and sits on the valve seat 4A of the member 4, and communicates and shuts off the inlet 5A and outlet 5B of the paint passage 5.
  • reference numeral 22 denotes an urging spring provided in the spring chamber 16 of the casing 1, and the urging spring 22 is disposed between the cap 6 and the piston 13 in a compressed state.
  • the port valve body 19 is urged in the valve closing direction via the piston 13 and the valve shaft 18.
  • reference numeral 23 denotes a manifold block fastened to the other end of the casing body 2, which is connected to the outlet 5B of the paint passage 5 to the manifold block 23.
  • An outflow passage 24 is provided.
  • the on-off valve for paint according to the present embodiment has the above-described configuration, and its operation will be described next.
  • paint is supplied into the paint passage 5 from an external paint supply source, and in this state, pilot air from an external compressed air source (neither is shown) flows through the pilot air passage 17 through the air chamber 1. 5, the pressure pushes the piston 13 toward the spring chamber 16 against the spring force of the biasing spring 22, and the valve shaft 18 moves the port valve 18. It is displaced along with the body 19 in the direction of arrow A in FIG. As a result, the poppet valve element 19 is opened when the valve portion 21 is separated from the valve seat 4A of the valve seat member 4, and the paint supplied into the paint passage 5 is discharged from its outlet. Outflow from 5 B Outflow into passage 24 to be supplied to painting equipment.
  • valve shaft 18 When the pilot air is discharged from the air chamber 15, the valve shaft 18 is pushed in the valve closing direction via the piston 13 by the spring force of the biasing spring 22. As a result, the poppet valve element 19 is closed with the valve portion 21 seated on the valve seat 4A and shuts off the inlet 5A and the outlet 5B of the paint passage 5.
  • the flange portion 20 B of the elastic member 20 is fitted into the fitting concave portion 8 B of the retainer 8 and the step portion 3 C 1 of the retainer fitting portion 3 C of the casing body 2.
  • the liquid between the shaft distal end fitting hole 20 E and the valve shaft 18, and between the distal end surface of the cylindrical portion 2 OA and the valve portion 21, respectively. Closely held. Therefore, the paint does not intrude from the through hole 20 C of the elastic member 20 into the fitting hole 8 A of the valve shaft of the retainer 8.
  • the elastic member 20 when the elastic member 20 expands and contracts, its cylindrical surface 20A1 has a smooth cylindrical shape without irregularities, so that pigments, hardeners, and the like in the paint are exposed to the cylindrical part 20A. Adhesion to A can be suppressed.
  • the poppet valve element 19 is constituted by the elastic member 20 and the valve part 21,
  • the port valve body 19 is fitted with the retainer 8 to the paint passage 5 with the elastic member 20 surrounding the small-diameter shaft portion 18 B of the valve shaft 18.
  • the hole 8A can be stably closed to prevent paint from entering the valve shaft fitting hole 8A.
  • the cylindrical portion 20A of the extensible member 20 expands or compresses in the axial direction on the outer peripheral side of the small-diameter shaft portion 18B.
  • the elastic member 20 can expand and contract in the axial direction following the valve shaft 18, and during this expansion and contraction, the cylindrical surface 2OA1 can keep a smooth cylindrical shape with no irregularities.
  • the cylindrical surface 20 A 1 having a small surface area can be easily cleaned with an appropriate amount of thinner, etc., and the amount of thinner used for cleaning can be reduced.
  • the maintainability at the time of cleaning and the like can be improved.
  • the elastic member 20 since the elastic member 20 has a through hole 20 C that can expand and contract on the outer peripheral side of the small-diameter shaft portion 18 B, the elastic member 20 securely closes the valve shaft ⁇ fitting hole 8 A as compared with the conventional technology. Meanwhile, the entire poppet valve body 19 can be stably displaced in the axial direction following the valve shaft 18, thereby improving the durability and reliability of the on-off valve for painting. In addition, by forming the valve portion 21 of the port valve body 19 using a material harder than the elastic member 20, the wear resistance of the valve portion 21 is increased. Thus, the valve portion 21 can be stably detached from and seated on the valve seat 4A of the valve seat member 4 for a long period of time.
  • the elastic member 20 is made of fluoro rubber, for example, it is possible to improve the resistance to solvents such as thinner contained in the paint, and to open and close the poppet valve body 19.
  • the strength of the cylindrical portion 2OA that expands and contracts in accordance with the operation can be increased, and its life can be extended.
  • FIGS. 5 and 6 show a second embodiment according to the present invention.
  • the feature of this embodiment lies in that the entire portion of the poppet valve is constituted by an elastic member.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.
  • Reference numeral 31 denotes a valve shaft used in the present embodiment in place of the valve shaft 18 of the first embodiment, and the valve shaft 31 has a large-diameter shaft portion almost in the same manner as the first embodiment. It is configured to include 31 A, a small diameter shaft portion 31 B, a connecting portion (not shown), and the like. However, on the protruding end of the small-diameter shaft portion 31B that protrudes toward the paint passage 5, a retaining portion 31C for retaining an elastic member 33 described later is provided so as to protrude in the radial direction. .
  • Reference numeral 32 denotes a poppet valve body for opening and closing the paint passage 5, and the entire port valve body 32 is made of a material having elasticity and elasticity such as fluororubber. It is composed of elastic members 33.
  • the elastic member 33 is formed in a bottomed cylindrical shape with the base end side open and the front end side closed, and fitted on the outer peripheral side of the small diameter shaft part 31B of the valve shaft 31. It is provided.
  • the elastic member 33 includes a cylindrical portion 33A whose outer peripheral surface is formed as a cylindrical surface 33A1 and slidably surrounds the small-diameter shaft portion 31B of the valve shaft 31. It is provided on the base end side of the cylindrical portion 33A so as to protrude in the radial direction, and is held between the stepped portion 3C1 of the retainer fitting portion 3C and the fitting concave portion 8B of the retainer 8.
  • the annular flange 33B fixed to the shaft and the shaft hole 31 formed through the center of the cylindrical portion 33A and having a larger diameter than the small diameter shaft 31B of the valve shaft 31 3 C, an enlarged-diameter groove formed on the distal end side of the shaft through-hole 3 3 C, a retaining groove 31 3 of the valve shaft 3 1, and an enlarged-diameter groove 3 3 D fitted therein, and an enlarged-diameter groove 3.
  • a 3D front end is formed by the closed bottom of the shaft through-hole 33C, and the outer surface is composed of a valve section 3E that elastically detaches and seats on the valve seat 4A of the valve seat member 4. Has been done. .
  • the elastic member 33 has its flange portion 33 B fitted into the fitting concave portion 8 B of the retainer 8 in substantially the same manner as in the first embodiment. It is held between the retainer fitting portion 3C of the casing body 2 and the step portion 3C1 of the casing 2 in a liquid-tight manner. Further, the elastic member 33 is formed as a bottomed hole in which the shaft communication hole 33C and the enlarged diameter groove portion 33D are closed on the distal end side by the valve portion 33E.
  • the elastic member 33 As a result, even if the elastic member 33 is extended or compressed in the axial direction when the valve shaft 31 is displaced, the elastic member 33 continues to shut off the valve shaft ⁇ fitting hole 8A with respect to the paint passage 5. This prevents the paint supplied to the paint passage 5 from entering the fitting hole 8A of the valve shaft.
  • the cylindrical surface 33A1 of the cylindrical portion 33A is configured to always maintain a smooth cylindrical shape during its expansion and contraction.
  • the poppet valve element 32 is formed by a tubular elastic member 33 having a bottom, and the valve section 33E is constituted by the bottom side.
  • the projecting end side of the valve shaft 31 protruding to the side can be entirely covered by the elastic member 33, and the valve shaft ⁇ fitting hole 8 A of the retainer 8 is provided for the paint passage 5. It is possible to shut off more reliably.
  • valve portion 33E of the elastic member 33 can be elastically seated on the valve seat 4A of the valve seat member 4, for example, when the paint on-off valve is closed, the valve seat 4
  • the valve seat 4A and the valve portion 33E can maintain liquid tightness even if foreign matter such as fine dust in the paint is interposed between A and the valve portion 33E. Can be improved in reliability.
  • the elastic members 20 and 33 are formed by using, for example, fluororubber.
  • the present invention is not limited to this, and has high solubility resistance to solvents and the like.
  • Various types of elastic materials may be used. Industrial applicability
  • the poppet valve element Since at least a part is formed of an elastic member, the elastic member expands and contracts with respect to the valve shaft when the poppet valve body is opened and closed. In this case, since the elastic member closes the valve shaft fitting hole of the casing with respect to the paint passage, it is possible to prevent the paint from entering the valve shaft fitting hole.
  • the elastic member can be formed, for example, as a cylindrical body having a smooth outer peripheral side and expanding and contracting in the axial direction, the pigment, the curing agent, and the like in the paint become a solid after being attached to the elastic member. It can be prevented from being mixed in the paint, and the surface side can be efficiently cleaned with an appropriate amount of a solvent or the like.
  • the elastic member can be expanded and contracted with respect to the valve shaft, the displacement of the biston can stably displace the entire valve body in the axial direction following the valve shaft. And improve durability and reliability.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

L'invention porte sur une soupape d'arrêt pour peinture comprenant un corps de protection (2), un dispositif de retenue (8) comportant un trou (8A) pour l'insertion correcte d'une tige de soupape, un piston (13) et un passage (5) pour la peinture ménagé des deux côtés du dispositif de retenue (8), une tige de soupape (18) raccordée au piston (13) et faisant saillie dans le passage (5) pour la peinture ménagé amovible dans le trou (8A), et un élément (19) de clapet placé à son extrémité. Le clapet (19) comprend également un élément extensible (20) maintenu entre le corps de protection (2) et le dispositif de retenue (8) et étendu en fonction du déplacement de la tige (18) de soupape et d'une partie (21) de la soupape se délogeant et se logeant sur un siège (4) de soupape. Grâce à l'élément extensible (20), on peut empêcher la peinture à l'intérieur du passage (5) e s'écouler dans le trou (8A) d'insertion de la tige de soupe, et on peut empêcher le pigment contenu dans la peinture d'adhérer à la surface périphérique externe de l'élément extensible (20).
PCT/JP2001/009644 2000-12-13 2001-11-02 Soupape d'arret pour peinture WO2002048587A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-378557 2000-12-13
JP2000378557 2000-12-13

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Publication Number Publication Date
WO2002048587A1 true WO2002048587A1 (fr) 2002-06-20

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PCT/JP2001/009644 WO2002048587A1 (fr) 2000-12-13 2001-11-02 Soupape d'arret pour peinture

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WO (1) WO2002048587A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2990124A1 (fr) * 2014-08-27 2016-03-02 Eisenmann SE Soupape

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2455260A1 (de) * 1974-05-06 1976-05-26 Regelungstech & Automation Ges Ventil insbesondere fuer heizkoerper
US5000215A (en) * 1988-04-27 1991-03-19 Phillips Edwin D Bellows seal for valves and the like
JPH044369A (ja) * 1990-04-20 1992-01-08 Daiwa Handotai Sochi Kk バルブ
JPH059570Y2 (fr) * 1987-12-11 1993-03-09
JPH061961U (ja) * 1992-06-18 1994-01-14 旭有機材工業株式会社 調節弁
JPH1122835A (ja) * 1997-07-03 1999-01-26 Ckd Corp 弁装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2455260A1 (de) * 1974-05-06 1976-05-26 Regelungstech & Automation Ges Ventil insbesondere fuer heizkoerper
JPH059570Y2 (fr) * 1987-12-11 1993-03-09
US5000215A (en) * 1988-04-27 1991-03-19 Phillips Edwin D Bellows seal for valves and the like
JPH044369A (ja) * 1990-04-20 1992-01-08 Daiwa Handotai Sochi Kk バルブ
JPH061961U (ja) * 1992-06-18 1994-01-14 旭有機材工業株式会社 調節弁
JPH1122835A (ja) * 1997-07-03 1999-01-26 Ckd Corp 弁装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2990124A1 (fr) * 2014-08-27 2016-03-02 Eisenmann SE Soupape

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