Classifications

• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
  • G05D7/00—Control of flow
  • G05D7/01—Control of flow without auxiliary power
  • G05D7/0126—Control of flow without auxiliary power the sensing element being a piston or plunger associated with one or more springs
• • 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
  • Y10T137/7722—Line condition change responsive valves
  • Y10T137/7781—With separate connected fluid reactor surface
  • Y10T137/7793—With opening bias [e.g., pressure regulator]
  • Y10T137/7808—Apertured reactor surface surrounds flow line
• • 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
  • Y10T137/7722—Line condition change responsive valves
  • Y10T137/7781—With separate connected fluid reactor surface
  • Y10T137/7793—With opening bias [e.g., pressure regulator]
  • Y10T137/7822—Reactor surface closes chamber
• • 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
  • Y10T137/7722—Line condition change responsive valves
  • Y10T137/7781—With separate connected fluid reactor surface
  • Y10T137/7835—Valve seating in direction of flow
• • 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
  • Y10T137/87917—Flow path with serial valves and/or closures
  • Y10T137/87981—Common actuator
  • Y10T137/87997—Alternately seating
  • Y10T137/88005—Biased valve

Definitions

• the subject of the present invention is an automatic automatic regulating valve for pressurized fluid, comprising a valve body comprising a chamber having a cylindrical bore, at least one lateral inlet port for the fluid, at least one front outlet port and at at least one orifice bringing the bottom of the cylindrical bore and the chamber into permanent communication with the outside, a valve made up of a revolution body movable axially in said chamber and a cylindrical part of which is engaged in the bore cylindrical chamber, is provided with a sealed segment, and a spring working in compression between the valve and the bottom of the cylindrical bore to keep the valve closed, the inlet opening opening between said liner and the orifice outlet, the valve being further arranged so that the cross section of the passage between the valve and the wall of the chamber decreases when the valve moves back under the effect of the fluid pressure.
• valves are already known from international patent application WO 86/04163.
• the valve consists of a first piston provided with a segment and connected by a rod to a second piston also provided with a segment.
• the chamber must have a precise bore which is relatively long and difficult to execute, in particular when the valve is made of injected synthetic material.
• the valve also has a piston rod secured to a piston fitted with an O-ring.
• the bore is significantly shorter, but the chamber is made up of several parts.
• the passage of the fluid is done through a longitudinal groove made in the wall of the bore, under the O-ring seal of one of the pistons. This groove obviously requires special means for obtaining it.
• the object of the present invention is to provide a simpler manufacturing valve and therefore a lower cost price, the cost price being an essential factor in the case of mass production.
• the valve according to the invention is characterized in that the chamber has a frustoconical part into which the inlet orifice opens and that the valve has, in front of the cylindrical part provided with said segment, a frustoconical part similar to that of the chamber and at least one passage between this frustoconical part and the front of the valve, the length of the frustoconical part of the valve being such that in the closed position, a space remains between the frustoconical surfaces of the valve and the chamber.
• the valve is simple in shape, especially if the passages are formed by simple grooves or flats.
• the chamber has no grooves. Only the frusto-conical parts must be carried out precisely.
• the valve can be very short or provided with a rod whose end cooperates with a valve seat surrounding the outlet orifice. This last version is particularly suitable for the distribution of viscous products.
• Figure 1 is an axial sectional view of a first embodiment of the valve in the rest position.
• Figure 2 shows the same valve in the open position by the entry of a pressurized fluid.
• Figure 3 is an axial sectional view of a second embodiment in the closed rest position.
• Figure 4 is a view of the same valve in the open position for the entry of a pressurized fluid.
• FIG. 5 is a sectional view along V-V of FIG. 3.
• FIGS 6 and 7 show alternative embodiments of the second embodiment.
• the valve shown in Figures 1 and 2 comprises a valve body consisting of a first cylindrical part 1 having an axial cylindrical recess 2 in which is fitted a second cylindrical part 3 in which is formed an essentially cylindrical chamber 4.
• the parts l and 3 are welded, glued or chased depending on the material used.
• the chamber 4 has a cylindrical bore 5, a frustoconical intermediate part 6 followed by a second relatively short cylindrical part 7.
• the valve further comprises a valve 8 consisting of a body of revolution in the form of a drawer having a cylindrical part provided with a seal consisting of an O-ring seal 9 disposed in the bore.
• the valve 8 also has a radial duct 12 opening into the cylindrical part of small diameter of the valve and an axial non-traversing conduit 13 communicating with the radial conduit 12 and opening at the front of the valve, in an age 14.
• a spring 15, working in compression, is mounted in the chamber between the valve 8 and the bottom of the chamber 4.
• the valve has a lateral inlet conduit 16 opening into the frustoconical part 6 of the chamber, an outlet conduit 17 closed, at rest, by the valve 8 and a hole 18 permanently communicating the bottom of the chamber 5 with the outside.
• the orifice of the radial duct 12 of the valve is located at the narrowest end of the frustoconical part 6 of bedroom. This position does not need to be defined precisely.
• a space separates the frustoconical part 6 of the chamber from the frustoconical part 10 of the valve, as shown in FIG. 1.
• valve 8 When a pressurized fluid enters the valve through the conduit 16, it enters the valve 8 through the radial conduit 12 and the axial conduit 13.
• the pressure developed in the valve 8 has the effect of making this valve reverse by compressing the spring 15, that is to say to open the valve, the fluid then being able to exit through the outlet conduit 17.
• the valve 8 recedes its frustoconical part 10 is applied against the frusto-conical part 6 of the chamber, which has the effect of closing the internal orifice of the inlet duct 16.
• the pressure then drops in the valve 8, so that the valve advances under the pressure of the spring 15, allowing new for fluid to enter the valve.
• a rapidly damped oscillation is established which results in a state of equilibrium.
• the pressure of the fluid at the outlet of the valve is practically regulated to a value determined by the spring 15.
• valve If it is desired to be able to modify the pressure of the fluid at the outlet of the valve, it is without other possibility to provide the valve with a setting screw for the spring 15 giving the spring the necessary precompression.
• the hole 18 can be provided in the axis of this screw.
• the valve can be made of metal or synthetic material.
• cylindrical parts 7 and 11 of the chamber 4 and of the valve, respectively, are not absolutely necessary for the operation of the valve. These cylindrical parts are used for guiding and centering the valve 8. The play between these cylindrical parts can be 0.1 or 0.2 mm without other. It will also be noted that the cylindrical bore 5 does not need to be precise, given that there is a large clearance between the valve and this bore, the clearance being taken up by the O-ring seal 9. Given this clearance, the position of the orifice of the radial duct 12 need not be precise, the fluid, gaseous or liquid, being able to flow as well in the frustoconical space as in the cylindrical space.
• the valve described is of course capable of many variants of execution.
• the valve 8 could in particular have several radial conduits, or even several axial channels.
• the front part of the valve could differ from the shape shown.
• the conduits 16 and 17 and the hole 18 could be oriented differently. It will be noted that the position of the interior orifice of the duct 16 need not be precise. The only parts to be precise are the frustoconical parts 6 and 10.
• valve body consisting of two parts l 'and 3', a cylindrical chamber 4 'having a bore 5', a frustoconical part 6 'and a cylindrical part 7', a valve 8 'having a frustoconical intermediate part 10 'similar to the frusto-conical part 6', an O-ring seal 9 ', a lateral inlet duct 16', an outlet duct 17 'closed, at rest, by the valve 8' and a pressure balancing hole 18 '.
• This second embodiment differs essentially from the first embodiment in that the cylindrical part 7 'of the chamber 4' is extended in the part l 'of the valve body by a chamber 19 extending in the direction of the 'outlet 17' and in that the passage between the frustoconical part 10 'of the valve and the front of the valve is made at the periphery of the cylindrical part 20 of the valve located in front of the frustoconical part.
• These passages 29, 30, 31, 32 are formed, for example, by four flats 21, 22, 23, 24 as shown in Figure 5. It is obvious that such a form of passage can be performed more easily than the conduits 12 and 13 of the first embodiment.
• the valve 8 ' is further extended by a cylindrical part 25 of diameter substantially smaller than the diameter of the chamber 19.
• a frustoconical part 26 cooperating with a frustoconical valve seat 27 to close the valve.
• the valve ends with a cylindrical part 28 of diameter substantially smaller than the diameter of the outlet orifice 17 ′ and intended to guide the valve.
• the valve according to this second embodiment operates in the same way as the valve according to the first embodiment.
• a pressurized fluid enters the valve through the conduit 16 ', it enters the chamber 19 through the passages 29, 30, 31, 32 and the pressure which develops in the chamber 19 has the effect of pushing the valve in. compressing the spring 15 '.
• the retraction of the valve has the effect of opening the outlet orifice 17 ′ causing a pressure drop in the chamber 19 and of closing the inlet duct 16 ′ valve.
• the valve can then advance under the thrust of its spring 15 '.
• the valve according to the second embodiment has the advantage of being able to be used with fluids having a relatively high viscosity. It is particularly suitable for the distribution of food products, such as jam, mustard, etc.
• the passages between the frustoconical part 10 ′ of the valve and the front thereof can have innumerable shapes and their number can be any. Two variant embodiments are shown, by way of example, in FIGS. 6 and 7.
• the passages consist of four grooves 33, 34, 35, 36 of rounded shape.
• the passages consist of two diametrically opposite grooves 37 and 38 of rectangular section.
• the constituent parts of the valve according to the invention are simple to produce and the assembly of the valve can be carried out easily automatically.
• the O-ring seal 9 can be replaced by a lip or a skirt coming from one piece with the valve.

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Automation & Control Theory (AREA)
• Lift Valve (AREA)
• Facsimiles In General (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=4216654

Family Applications (1)

Country Status (7)

Families Citing this family (11)

Family Cites Families (14)

• 1990
  • 1990-05-18 CH CH1704/90A patent/CH683803A5/fr not_active IP Right Cessation
• 1991
  • 1991-05-16 AU AU77659/91A patent/AU7765991A/en not_active Abandoned
  • 1991-05-16 CA CA002063832A patent/CA2063832A1/en not_active Abandoned
  • 1991-05-16 EP EP91908196A patent/EP0483311A1/de not_active Withdrawn
  • 1991-05-16 JP JP3508117A patent/JPH05500128A/ja active Pending
  • 1991-05-16 WO PCT/CH1991/000115 patent/WO1991018337A1/fr not_active Ceased
  • 1991-05-16 US US07/820,892 patent/US5213132A/en not_active Expired - Fee Related

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events