ES400987A1 - Closing device for a pneumatic system - Google Patents

Closing device for a pneumatic system

Info

Publication number
ES400987A1
ES400987A1 ES400987A ES400987A ES400987A1 ES 400987 A1 ES400987 A1 ES 400987A1 ES 400987 A ES400987 A ES 400987A ES 400987 A ES400987 A ES 400987A ES 400987 A1 ES400987 A1 ES 400987A1
Authority
ES
Spain
Prior art keywords
expandable member
pneumatic system
wall
sealing surface
opening connected
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES400987A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PRONAL SA
Original Assignee
PRONAL SA
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 PRONAL SA filed Critical PRONAL SA
Publication of ES400987A1 publication Critical patent/ES400987A1/en
Expired legal-status Critical Current

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
    • F16K15/00—Check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • F04D25/14—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures and having shutters, e.g. automatically closed when not in use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/009—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Sealing Devices (AREA)
  • Bag Frames (AREA)

Abstract

Improvements in sealing devices for pneumatic systems, of the type comprising an expandable member with a deformable wall, at one end of which there is provided a sealing surface intended to cooperate with an annular seat adjacent to an opening connected to the pneumatic system, delimiting the wall of This expandable member is an internal chamber and presenting an orifice capable of being put into communication with the external environment and/or with the pneumatic system, in such a way that pressure variations in the chamber cause the expandable member to contract or expand and a relative displacement of the seat and the sealing surface, to uncover or seal the opening connected to the pneumatic system, characterized in that the expandable member is made up of a bag or bladder (12), preferably circular, the wall of which is made up of two waterproof fabrics (31, 32), for example of coated fabric, bonded together e on the edge according to its periphery and on one of which means are provided, made for example in the form of ribs (36), to separate the two fabrics from each other at least in the area of the communication hole. (Machine-translation by Google Translate, not legally binding)
ES400987A 1971-03-12 1972-03-06 Closing device for a pneumatic system Expired ES400987A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7108797A FR2129063A5 (en) 1971-03-12 1971-03-12

Publications (1)

Publication Number Publication Date
ES400987A1 true ES400987A1 (en) 1975-02-01

Family

ID=9073470

Family Applications (1)

Application Number Title Priority Date Filing Date
ES400987A Expired ES400987A1 (en) 1971-03-12 1972-03-06 Closing device for a pneumatic system

Country Status (9)

Country Link
AT (1) AT308952B (en)
CA (1) CA963350A (en)
CH (1) CH555021A (en)
DD (1) DD96307A5 (en)
DE (1) DE2210955A1 (en)
ES (1) ES400987A1 (en)
FR (1) FR2129063A5 (en)
GB (1) GB1387902A (en)
IT (1) IT957252B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3641433A1 (en) * 1986-12-04 1988-06-09 Mct Brattberg Kabeldurchfuehru Blocking device for an air duct
DE29711777U1 (en) * 1997-07-06 1997-10-23 Fritz Sträter GmbH, 58540 Meinerzhagen Locking mechanism
GB2344617A (en) * 1998-12-09 2000-06-14 Air Control Ind Ltd Blown air apparatus with control valve
CN118328186B (en) * 2024-06-14 2024-10-29 中国第一汽车股份有限公司 Core assembly and ventilation device

Also Published As

Publication number Publication date
FR2129063A5 (en) 1972-10-27
DD96307A5 (en) 1973-03-12
IT957252B (en) 1973-10-10
DE2210955A1 (en) 1972-09-21
CH555021A (en) 1974-10-15
GB1387902A (en) 1975-03-19
CA963350A (en) 1975-02-25
AT308952B (en) 1973-07-25

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