ITMI970070U1 - Valvola a farfalla - Google Patents

Valvola a farfalla Download PDF

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Publication number
ITMI970070U1
ITMI970070U1 IT97MI000070U ITMI970070U ITMI970070U1 IT MI970070 U1 ITMI970070 U1 IT MI970070U1 IT 97MI000070 U IT97MI000070 U IT 97MI000070U IT MI970070 U ITMI970070 U IT MI970070U IT MI970070 U1 ITMI970070 U1 IT MI970070U1
Authority
IT
Italy
Prior art keywords
butterfly valve
shell
screws
shells
allows
Prior art date
Application number
IT97MI000070U
Other languages
English (en)
Inventor
Erminio Tassalini
Augusto Tassalini
Original Assignee
Tassalini Officina Meccanica S
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 Tassalini Officina Meccanica S filed Critical Tassalini Officina Meccanica S
Priority to IT97MI000070 priority Critical patent/IT236441Y1/it
Priority to EP98101601A priority patent/EP0859177A1/de
Publication of ITMI970070U1 publication Critical patent/ITMI970070U1/it
Application granted granted Critical
Publication of IT236441Y1 publication Critical patent/IT236441Y1/it

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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2268—Sealing means for the axis of rotation
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Valve Device For Special Equipments (AREA)
  • Mechanically-Actuated Valves (AREA)

Description

Descrizione del modello di utilità avente per titolo: Valvola a farfalla
DESCRIZIONE
Forma oggetto della presente innovazione una valvola a farfalla adatta all'impiego negli impianti dell'industria alimentare, enologica, chimica e farmaceutica.
Le note valvole a farfalla presentano l'inconveniente della difficile e laboriosa sostituzione delle guarnizioni di tenuta. Rispetto alle attuali valvole a farfalla in commercio, il presente modello, attraverso una chiusura di due semigusci con viti, permette la chiusura contemporanea delle due parti terminali, nonché il giusto alloggiamento della guarnizione di tenuta. Lo smontaggio di estrema facilità attraverso lo svitamento delle viti, permette l'eventuale sostituzione delle guarnizioni senza dover ricorrere allo smontaggio delle tubazioni .
Inoltre possono essere montate estremità a saldare o con estremità filettate.
Una valvola a farfalla secondo la presente innovazione viene ora descritta con riferimento al disegno.
La valvola a farfalla è composta da un semiguscio superiore (1) e da un semiguscio inferiore (2).
Il semiguscio superiore (1) viene reso solidale con il semiguscio inferiore (2) mediante due viti (7). Entrambi i semigusci contengono un foro . che permette l'alloggiamento del perno dell'otturatore (3).
I semigusci (1 e 2) hanno una speciale forma che permette l'accoppiamento ed il bloccaggio delle flange (5) con la guarnizione (4) interposta.
L'otturatore forgiato in acciaio inox è lavorato su due perni con inserimento di due bussole in teflon (6) . La guarnizione (4) può essere prodotta in diversi elastomeri ed in diverse forme, ma con due fori perpendicolari per l'alloggiamento del perno otturatore .
Le flange (5) possono essere di diverse dimensioni e unificazioni esistenti sul

Claims (4)

  1. RIVENDICAZIONI 1. Valvola a farfalla, caratterizzata dal fatto che è composta da un semiguscio superiore (1) e da un semiguscio inferiore (2).
  2. 2. Valvola a farfalla, secondo la rivendicazione 1, caratterizzata dal fatto che i due semigusci (1 e 2) sono resi solidali mediante due viti (7) .
  3. 3. Valvola a farfalla, secondo le rivendicazioni 1 e 2, caratterizzata dal fatto che l'otturatore è forgiato in acciaio inox lavorato su due perni con inserimento di due bussole in teflon (6).
  4. 4. Valvola a farfalla, secondo le rivendicazioni precedenti, caratterizzata dal fatto che le flange (5) hanno estremità a saldare o estremità filettate .
IT97MI000070 1997-02-04 1997-02-04 Valvola a farfalla IT236441Y1 (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT97MI000070 IT236441Y1 (it) 1997-02-04 1997-02-04 Valvola a farfalla
EP98101601A EP0859177A1 (de) 1997-02-04 1998-01-30 Ventilklappe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT97MI000070 IT236441Y1 (it) 1997-02-04 1997-02-04 Valvola a farfalla

Publications (2)

Publication Number Publication Date
ITMI970070U1 true ITMI970070U1 (it) 1998-08-04
IT236441Y1 IT236441Y1 (it) 2000-08-17

Family

ID=11375627

Family Applications (1)

Application Number Title Priority Date Filing Date
IT97MI000070 IT236441Y1 (it) 1997-02-04 1997-02-04 Valvola a farfalla

Country Status (2)

Country Link
EP (1) EP0859177A1 (it)
IT (1) IT236441Y1 (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322280A1 (de) * 2003-05-16 2004-12-02 Alfa Laval Lkm A/S Drosselklappenventil
FR2922984B1 (fr) 2007-10-31 2013-09-27 Saint Gobain Performance Plast Vanne ayant un joint rigide
US8348236B2 (en) 2007-10-31 2013-01-08 Saint-Gobain Performance Plastics Corporation Butterfly valve with a rigid seal

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3048363A (en) * 1957-02-21 1962-08-07 Garrigan Helen Butterfly valve
FR1471127A (fr) * 1966-03-15 1967-02-24 Vanne à opercule ou volet
FR1581092A (it) * 1968-07-17 1969-09-12
US3967812A (en) * 1975-02-26 1976-07-06 Dresser Industries, Inc. Shaft seal for corrosion resistant butterfly valve
US4148458A (en) * 1977-06-13 1979-04-10 Fisher Controls Company Tight shutoff butterfly valve
CA1143357A (en) * 1979-07-19 1983-03-22 Richard W. Conley Plastic valve assembly
US4589628A (en) * 1982-09-10 1986-05-20 General Signal Corporation Unitary bearing and locator assembly for rotatable valves
DE3302159A1 (de) * 1983-01-22 1984-07-26 NEUMO Apparatebau, Metallgießerei GmbH, 7134 Knittlingen Drosselklappenventil
FR2560660A1 (fr) * 1984-03-05 1985-09-06 Defontaine Sa Perfectionnement aux robinets a papillon
US5018704A (en) * 1990-01-12 1991-05-28 Victaulic Company Of America Pipe coupling with in-coupling flow controller

Also Published As

Publication number Publication date
IT236441Y1 (it) 2000-08-17
EP0859177A1 (de) 1998-08-19

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