WO2022219660A1 - Vanne papillon fendue à confinement élevé - Google Patents

Vanne papillon fendue à confinement élevé Download PDF

Info

Publication number
WO2022219660A1
WO2022219660A1 PCT/IT2022/050094 IT2022050094W WO2022219660A1 WO 2022219660 A1 WO2022219660 A1 WO 2022219660A1 IT 2022050094 W IT2022050094 W IT 2022050094W WO 2022219660 A1 WO2022219660 A1 WO 2022219660A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
disc
engaged
rotor
butterfly valve
Prior art date
Application number
PCT/IT2022/050094
Other languages
English (en)
Inventor
Raffaello BEVILACQUA
Original Assignee
Sterivalves S.R.L.
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 Sterivalves S.R.L. filed Critical Sterivalves S.R.L.
Publication of WO2022219660A1 publication Critical patent/WO2022219660A1/fr

Links

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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves

Definitions

  • the present invention belongs to the technical field of valves and in particular, but not exclusively, to the technical field of valves used to regulate and intercept the flow of powdery products along transfer ducts.
  • the present invention belongs to the technical field of valves, whose rotor is of the butterfly type that can be split into two half-valves.
  • one half-valve includes the actuation means and is called active half-valve, while the second half- valve is called passive half-valve because it is driven by the first half-valve.
  • valves are usually installed in between the ends of two pipes, and both half-valves are shaped so that when the valve is disassembled, they are able to keep the end of the respective pipe closed and sealed.
  • the present invention is a decom posable high containment butterfly valve;
  • contain ment refers to a series of measures taken for the purpose of limiting the diffusion of a particular substance for example to protect the process environment including operators.
  • HPAPI Highly Potent Active Pharmaceutical Ingredi ents
  • valves need to be made sterile before use and kept sterile during operation and product transfer.
  • Patent EP1996840 discloses a decomposable butter fly valve comprising two half-valves, which are complemen tary to each other and conformed so that the first half valve hermetically engages and cooperates with the second half-valve.
  • Each half-valve includes a half-body, in which a seat for a half-rotor is provided, said half-rotor being conformed as a half-butterfly with a disc element, movable between a first open position in which the disc of the half rotor is not engaged with the seat and a second closed po sition in which the disc of the half-rotor is tightly engaged with the seat.
  • the coupled valve can take on two different oper ating configurations.
  • the two half-bodies are reciprocally hermetically engaged and both discs of the two half-rotors are hermetically engaged in their respective seats, but they are not reciprocally engaged because they are detached so that with the two half-bodies joined, they form a chamber sealed to the outside.
  • an inlet and an outlet are defined, which serve to flush the chamber itself with a sterilizing fluid.
  • the disks of the two half-rotors are reciprocally engaged and move together, passing from the first open position to the second closed position and vice versa.
  • a third configuration is that of the split valve, with the two half-bodies completely disengaged from each other.
  • the first configuration allows the cleaning of the valve from the product and the sterilization of the valve before disassembling it and, after the reassembly of the two half-valves, it allows the sterilization of the portions that have come into contact with the outside world before they come into contact with the product.
  • a first male half-body whose external surface is conformed as a cylin der, engages slidingly inside a corresponding cylinder de fined in the second female half-body; in the first operative configuration, the sealing towards the outside is obtained by means of a gasket ring circumferentially interposed be tween the two cylindrical surfaces respectively defined in the two half-bodies.
  • a decomposable but terfly valve which includes two bodies, each of which houses a dis-shaped half-rotor from which obliquely protrudes a half-shaft that rotationally engages in the corresponding half-body, the latter comprising a flange coupling with a corresponding flange of the other half-body.
  • a sealing seat is defined in the thickness of the coupling flange, which houses a toroidal gasket slightly protruding from the plane defined by the flange; when the two half-bodies are in contact, the respective gaskets touch each other and ensure the hermetic seal between the two half bodies, in addition, each of said gaskets ensures the her metic seal between the inside of the half-body and the disc of the respective half-rotor.
  • the present invention includes an innovative sealing system that allows the valve to be split, minimizing the risk of contamination of the environment.
  • Fig. 1 shows a top view of the assembled valve.
  • Fig. 2. shows a side view of the assembled valve.
  • Fig. 3 shows a longitudinal section of the assem bled valve, without the actuation means (18), according to the A-A plane shown in Fig. 1.
  • Fig. 4 shows a perspective view of the split valve; the elastic contrast means (4) are not shown.
  • Fig. 5 shows a section of the active half-valve only (1) according to the B-B plane shown in Fig. 3.
  • Fig. 5 shows a section of the passive half-valve only (2) according to the C-C plane shown in Fig. 3.
  • the present invention comprises a butterfly valve of the type decomposable into two half-valves, the first half-valve (1) is commonly referred to as active because it is connected to actuating means that control the opening and closing of the valve; the second half-valve (2) is referred to as passive because it receives motion from the first half-valve.
  • Each half-valve comprises a valve half-body (11, 21) that houses a respective disc-shaped half-rotor (12, 22) rotationally connected to its half-body by means of a single half-shaft (15, 25) that protrudes obliquely from the disc of the respective half-valve and engages in a corresponding obliquely defined housing in the corresponding half-body.
  • Each half-body comprises a coupling flange (13, 23) which has a protruding perimeter edge; in the thickness of the flange is defined the sealing seat of the disk of the half-rotor and the seal between the half-body and the disk of the corresponding half-rotor is obtained thanks to a to roidal gasket (14, 24), which protrudes slightly from the plane defined by the coupling flange.
  • the toroidal gaskets (14, 24) ensure a tight seal between each half-body and the disc of the re spective half-rotor, but they also cooperate with each other to ensure a tight seal between the two half-bodies when the latter are pushed against each other by the action of a clamping collar (3) that embraces the peripheral edges of both coupling flanges; the clamping collar comprises closing means (31) with three positions, to which correspond as many different configurations of the butterfly valve.
  • the first one is a washing configuration, in which the two half-bodies (11, 21) are reciprocally engaged and the seals (14, 24) counteract each other, ensuring the her metic seal of the valve; in this first configuration the disks (12, 22) of the two half-rotors are engaged in their respective seats and close the passage of the product, but they are not reciprocally engaged because they are kept apart by the action exerted by appropriate elastic contrast means (4), so that the disks of the two half-rotors in closed position and the two half-bodies joined together form an externally sealed chamber in which the washing fluid can flow in and out through inlet/outlet holes defined in the half-bodies .
  • the second one is the working configuration, in which the two half-bodies (11, 21) are reciprocally engaged, the gaskets (14, 24) contrast each other hermetically, and the discs (12, 22) of the two half-rotors are opposed in reciprocal contact; the latter rotate together, passing from the first opening position to the second closing position and vice versa.
  • the third one is a split configuration, in which the two half-bodies are disengaged from each other and the gaskets (14, 24) are not in contact with each other.
  • each half-valve comprises reciprocal centering means to fa cilitate coupling with the other half-valve; shown in the figures are two pins (17) that protrude orthogonally from the plane defined by the coupling flange (11) of the half body of the active half-valve (1) and engage in two corre sponding holes (27), defined in the coupling flange (21) of the half-body of the passive half-valve (2).
  • each half-valve (1, 2) comprises means for locking (16, 26) the rotation of the respective half-rotor when the disc of the latter is not reciprocally in contact with the disc of the other half rotor.
  • the lat eral surfaces of both half-shafts (15, 25) comprise an in termediate portion along which lateral flattenings are de fined which lie in planes orthogonal to the plane of the half-rotor disc, so that when the latter is in the closed position, with the disc engaged in the sealing seat, these flattenings are parallel to the longitudinal axis of the valve; on the side of each flattening is housed a respective piston having a variable section, with a distal portion thinner than the proximal portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

L'invention concerne une vanne papillon décomposable à confinement élevé avec deux demi-vannes (1, 2) reliées par un collier de serrage (3) qui permet également une déconnexion partielle.
PCT/IT2022/050094 2021-04-16 2022-04-12 Vanne papillon fendue à confinement élevé WO2022219660A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102021000009728A IT202100009728A1 (it) 2021-04-16 2021-04-16 Valvola a farfalla, sdoppiabile e ad elevato contenimento
IT102021000009728 2021-04-16

Publications (1)

Publication Number Publication Date
WO2022219660A1 true WO2022219660A1 (fr) 2022-10-20

Family

ID=77021847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2022/050094 WO2022219660A1 (fr) 2021-04-16 2022-04-12 Vanne papillon fendue à confinement élevé

Country Status (2)

Country Link
IT (1) IT202100009728A1 (fr)
WO (1) WO2022219660A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1996840A1 (fr) * 2006-03-20 2008-12-03 Powder Systems Limited Ensemble de raccordement
DE202009018738U1 (de) * 2009-03-04 2013-01-22 Glatt Systemtechnik Gmbh Leicht lösbares Kupplungssystem zur axialen Kupplung von zwei Flanschen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1996840A1 (fr) * 2006-03-20 2008-12-03 Powder Systems Limited Ensemble de raccordement
DE202009018738U1 (de) * 2009-03-04 2013-01-22 Glatt Systemtechnik Gmbh Leicht lösbares Kupplungssystem zur axialen Kupplung von zwei Flanschen

Also Published As

Publication number Publication date
IT202100009728A1 (it) 2022-10-16

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