FR2492038A1 - - Google Patents

Abstract

A. THE INVENTION RELATES TO A SLEEVE VALVE 1 AND SOLVES THE PROBLEM OF CREATING AN INCORPORATED CONTROL CHAMBER 9. B. THIS VALVE IS CHARACTERIZED IN THAT IT INCLUDES AN ELASTOMER SLEEVE 1 FOLDED ON ITSELF, BOTH PERIPHERAL ENDS 2, 3 OF THE SLEEVE BEING RECESSED SO AS TO CONSTITUTE AN INCORPORATED CONTROL CHAMBER 9, AN ORIFICE 10 BEING PROVIDED IN THIS CHAMBER TO CONNECT IT TO A SOURCE OF CONTROL PRESSURE. C. THE INVENTION IS APPLICABLE TO THE CONTROL OF THE FLOW OF A FLUID IN A DUCT.

Description

1 - 2492038

  The present invention relates to a valve

  sleeve with incorporated control chamber.

  Valves are known to: sleeve having a

  elastomer sleeve generally mounted in a housing, this man-

  chon being surrounded by a chamber under pressure for it to be

  kept in the closed or pinched state.

  The object of the present invention is to create a

  sleeve pope in which the sleeve comprises a chamber

  integrated control, so that the crankcase of the

pe can be deleted.

  Another object of the invention is to create a

  pope with sleeve which, because of its construction! either economically

  safe operation and has a long service life,

  without requiring maintenance or replacement.

  To this end, the invention relates to a sleeve valve of the above type, characterized in that it comprises a sleeve of elastomer folded on itself, the two ends of the periphery of the sleeve being embedded so as to constitute a chamber of incorporated control, an orifice being provided in

  this room to connect it to a source of pressure of com-

  mande. The portion of the sleeve which, in the folded state, comes to the interior is constructed to have the characteristics of a conventional sleeve valve, while the portion which comes to the outside constitutes a retaining wall, so that the

carter can be deleted.

  The invention will be better understood with regard to the

  description below and the accompanying drawings showing a

  embodiment of the invention, drawings in which - Figure 1 is a longitudinal section of a

  sleeve valve with an incorporated control chamber

  In the form of the invention: this valve being mounted at the end of a pipe - Figure 2 is a section taken along the line II-II of Figure 1 - Figure 3 is a view similar to Figure 1 showing a valve according to the invention mounted in a pipe,

  The sleeve valve according to the invention

  wears an elastomeric sleeve 1 folded on itself, both

V- 2 - -2492038

  edges 2 and 3 of the sleeve being embedded between a flange 4 provided at the end of a pipe 5 and a retaining ring 6. A second retaining ring 7 is inserted between the ends 2 and 3, the assembly assembly being fixed on the flange 4 by means of bolts and nuts 8. FIG. 1 shows that when the sleeve 1 is folded on itself and that its ends are fixed, a peripheral chamber 9 is formed to constitute the chamber control of the sleeve. For this, an orifice 10 is formed in the ring 7, this orifice being connected to a control pressure source (not shown). The part 11 of the sleeve that comes

  inside has the characteristics of a

  classic chon which, when in the closed state, ensures a tight seal with its diametrically opposite side. The part

  12 of the sleeve that comes to the outside, constitutes the wall of

  holding the sleeve valve. We can thus remove the car-

  of the valve, which makes it extremely economical to

this type of valve.

  The valve of FIG. 3 is similar to that of FIG. 1 and the same elements have been designated by the same reference numerals. The only difference is that the ring 6

  is now constituted by a flange 6 'of a pipe 13.

  This figure shows how a valve according to the invention

  can be mounted in a pipe.

  If desired, the ring 7 can be removed and the connection port at the control pressure source can

  be practiced in the sleeve itself in any location

  Proprie. In addition, part 11 of the sleeve may be provided with a

  protruding bead incorporated to increase the contact surface

  tact at the location of the closure.

3.- D22492038

Claims (3)

R E V E N D I C A T IO N S   1.- sleeve valve characterized in that it comprises an elastomeric sleeve (i) folded on itself; the two circumferential ends (2, 3) of the sleeve being embedded so as to constitute an incorporated control chamber (9), an orifice (10) being provided in this chamber to connect it to a source of control pressure.   2. Sleeve valve according to claim 1, characterized in that the part of the sleeve (11) which comes inside in the folded state is formed to have the characteristics of a conventional sleeve valve, while the part (12) which comes to the outside constitutes a retaining wall. 3.- Sleeve valve according to claim 2, characterized in that the portion of the sleeve (11) which comes to   the interior is provided with a protruding bead incorporates.