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
  • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
  • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
  • F16K11/022—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising a deformable member
• • 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
  • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
  • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
  • F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
  • F16K11/207—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with two handles or actuating mechanisms at opposite sides of the housing
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/8593—Systems
  • Y10T137/87169—Supply and exhaust
  • Y10T137/87193—Pilot-actuated
  • Y10T137/87201—Common to plural valve motor chambers
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/8593—Systems
  • Y10T137/87169—Supply and exhaust
  • Y10T137/87217—Motor
  • Y10T137/87225—Fluid motor

Definitions

• the invention relates to a device for controlling flowing media, in particular a vacuum valve, with closure members for venti 1 openings movable in a valve housing and with lines connecting to the venti 1 housing, namely to a (vacuum) pump leading supply line and to a consumer leading consumer line or Suction line.
• Valves for flowing media are often equipped with a rigid closure member which can be moved within a valve 1. This is usually loaded in one direction of movement, for example in the closing direction, by a spring. As a result, opening and closing movements are sluggish, so that short cycle times are not possible in the long run.
• the invention is based on the object of proposing a valve which enables simple formation and actuation of closure members and is permanently efficient.
• the (vacuum) venti 1 is characterized in that at least one closure member is designed as an elastically deformable shaped piece, in particular as a membrane, which can be moved into the open or closed position by exposure to a pressure medium due to elastic deformation .
• the membrane as a closure member is clamped tightly along an all-round edge and deformable by one-sided exposure to a pressure medium, in particular by compressed air and / or vacuum, until it contacts a valve seat.
• the vacuum valve according to the invention preferably comes for
• the vacuum valve is particularly suitable for controlling the vacuum on individual suction heads a suction lifter, as shown for example in US 5 666 786 1 t.
• a special feature of the invention lies in the concept of pilot control of the valve.
• a pilot valve ensures that negative pressure is always effective when the (two) diaphragms are switched. Specifically, the diaphragms are each deformed into an open position with negative pressure and into the closed position using compressed air. This enables very fast valve work cycles.
• a flow tube is positioned within the housing, the two ends of which are each assigned a membrane as a closure member.
• the membrane is supplied with compressed air from the central compressed air supply of the (packaging) machine.
• actuating one or the other membrane and thereby closing one or the other end of the flow tube a suction line leading to the lifting head or the suction heads is connected to a supply line leading to the vacuum pump, or the suction line of the suction heads is vented.
• FIG. 1 The valve of FIG. 1 with a changed opening or. Closed position
• FIG. 1 shows a vertical cut through the valve in a section plane III-III of FIG. 1,
• FIG. 4 shows a horizontal section through the valve in section plane IV-IV of FIG. 1.
• the valve shown as an exemplary embodiment has a rectangular valve housing 10.
• Supply and actuation lines are connected to this on various sides.
• a supply line 11 is attached, which leads to a vacuum pump 12 and is therefore functionally a suction line.
• a transverse, upright side surface is a consumer line, namely a suction line 13, which in the preferred application example leads to a suction head of a suction lifter (not shown) of a packaging robot.
• Actuating lines 14, 15 for valve or closure members are attached to opposite (upright) side surfaces. These are compressed air lines.
• a compensating line 16 is connected to the valve housing 10.
• Passage openings or flow channels are formed within the valve housing 1 and can be blocked off by closure members.
• closure members are designed as membranes 17, 18 made of elastically deformable or stretchable material, for example made of rubber or plastic.
• the disc-shaped membrane 17, 18 are tightly or firmly anchored along an outer edge. An inner, central area is exposed.
• a membrane 17, 18 is acted upon on one (outer) side with a flowing pressure medium, namely by compressed air (arrows 19). This results in a spherical deformation of the membrane 18 in question until it rests on a valve seat 20 or 21.
• the annular valve seat 20, 21, which is formed with a rounded surface, is sealed all around by the membrane 17, 18.
• the compressed air for actuating the membrane 17, 18 is fed through the actuation line 14, 15, in the position according to FIG. 1 through the actuation line 15 to the membrane 18.
• the venti 1 housing 10 consists of a core piece 22 and two side cover plates 23, 24. The latter serve on the one hand to fix the membrane 17, 18 to the core piece 22.
• the cover plates 23, 24 form on the one hand and the core piece 22 on the other hand, a tongue and groove connection 25 for the membrane.
• the actuating lines 14, 15 connect (in the middle) to the valve housing 10 and thus form the pressure side for actuating the diaphragms 17, 18.
• the core piece 22 has a plurality of flow channels and line connections.
• the supply line 11, the suction line 13 and the compensating line 16 connect directly to the core piece 22.
• a flow tube 26 is formed within it, in the center and in the transverse direction. This flow tube 26 positioned transversely to the supply line 11 forms at the ends the valve seats 20, 21 adjacent to the membranes 17, 18.
• the consumer line, namely the suction line 13 connects to the flow tube 26 via a channel piece 27 in the longitudinal center (FIG. 4).
• valve seats 20, 21, are at a distance from it, so that in the open position of the respective closure member between the diaphragm 17, 18 and the flow tube 26, an open flow path 28 (FIG. 1) or 29 (Fig. 2) is formed. Due to the shape and arrangement of the flow tube 26 within the housing, an annular channel 30 is also formed on the outside of the flow tube 26, which is free even when the membrane 17 is closed and connects the compensating line 16 to the supply line 11 (FIG. 2, FIG. 3).
• the actuation of the diaphragm 17, 18 can be controlled by a pilot valve 31. It is a 4/2-way valve 1.
• the actuation lines 14, 15 are connected to the pilot valve 31.
• a central compressed air line 32 leads from a compressed air source, in particular a central, aschi nensei term compressed air supply, to the pilot valve 31.
• the compensation line 16 is connected to the pilot valve 31.
• the actuation line 15 for the membrane 18 is connected to the compressed air line 32 via the pilot valve 31.
• the membrane 18 is deformed into the closed position by means of compressed air (arrows 19).
• the consumer is in the position shown in FIG. 1! line, that is to say the suction line 13, is connected via the flow pipe 26 and the flow path 28 to the negative pressure source, namely via the supply line 11. In this position, the suction heads are therefore subjected to negative pressure.
• the actuation line 14 is connected to the compressed air source or to the compressed air line 32.
• the membrane 17 is pressed against the adjacent valve seat 20, while at the same time the membrane 18 returns to the open position, bearing against the cover plate 24.
• This opening process is supported by the fact that the actuation line 15 is connected to the vacuum pump 12 via the equalization line 16 and the ring channel 30, that is to say negative pressure is generated on the rear side of the membrane 18.
• the opening position of the membrane 18 opens a vent hole 33, which is arranged on the upper side of the core piece 22 Approved. This is now connected via the flow path 29 and the flow tube 26 to the consumer line, that is to say the suction line 13. This is then vented, the connected suction heads release the detected object.
• valve or the arrangement of the elastically deformable closure members - membranes 17, 18 - ensures that they are always loaded with negative pressure in the closed position on the closing side, i.e. on the side facing the valve seat 20, 21, so that none Counteract pressure forces of the closing force by compressed air from the actuation lines 14, 15.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Fluid-Driven Valves (AREA)
• Check Valves (AREA)
• Manipulator (AREA)
• Reciprocating Pumps (AREA)
• Details Of Valves (AREA)
• Multiple-Way Valves (AREA)
• Particle Accelerators (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7902457

Family Applications (1)

Country Status (7)

Families Citing this family (11)

Citations (4)

Family Cites Families (15)

• 1999
  • 1999-03-25 DE DE1999113689 patent/DE19913689A1/de not_active Withdrawn
• 2000
  • 2000-02-25 WO PCT/EP2000/001600 patent/WO2000058650A1/de not_active Ceased
  • 2000-02-25 CN CNB008067430A patent/CN1175196C/zh not_active Expired - Fee Related
  • 2000-02-25 JP JP2000608106A patent/JP2002540369A/ja not_active Ceased
  • 2000-02-25 DE DE50007486T patent/DE50007486D1/de not_active Expired - Lifetime
  • 2000-02-25 BR BRPI0009324-6A patent/BR0009324B1/pt not_active IP Right Cessation
  • 2000-02-25 US US09/937,226 patent/US6554026B1/en not_active Expired - Lifetime
  • 2000-02-25 EP EP00909257A patent/EP1163464B1/de not_active Expired - Lifetime

Patent Citations (4)

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