US2410105A - Valve - Google Patents

Description

0a. 29, 1946. v. REMUS VALVE Filed April 1'7, 1940 w. m. V

Patented Oct. 29, 1946 UNITED. STATES ,PATENT OFFICE Valentin Remus, Brussels, Belgium; vested in the Alien Property Custodian Application April 17, 1940, serial-No. 330,197

In Belgium April 29, 1939 1 Claim. (61.25'1-1-3'2) l The invention relates to obturating means for fluid. pipes and containers under high pressure, and particularly concerns the obturating devices used in connection with pipes and containers in which an obturating valve opens against the pressure of the fluid. In obturating devices of this kind, serious difficulties are encountered to ensure the tightness of the valve due to the fact that the generally soft packing materials are liable to deteriorate, such tendency being more marked when the materials are subjected to severe temperature conditions, expansion of highly compressed uids, or other conditions, such for example as a chemical action due to the character of the fluid. On the other hand, owing generally to the same reasons, during the discharge of the fluid, iiuid losses through the valve are unavoidable, and the same is true also during the loading of the pipes or containers with the uid under pressure when such loading is effected by causing the uid to flow through the obturating device.

The main object of the invention is to avoid these difficulties and provide an obturating device the tightness of which may be ensured under all conditions, that is both in the state of complete or partial load of the associated pipe or container, and during the loading of said pipe or container with uid under pressure, or during the discharge of said fluid, and under whatever conditions to which the device may be subjected, or the nature of the fluid.

The invention consists in means to seat a main valve and also an auxiliary valve. A lever is provided by which the valves may be operated, and means associated with such lever are provided whereby, without operating such lever, one of the valves can be locked upon its seat. The invention consists in associating with the main valve closing the container or pipe and adapted to be locked on its seat, the auxiliary valve adapted to isolate the passage for the iiuid from the operating means, as well during the loading operation as during the discharge ofthe iiuid, and which is adapted to be locked on its seat bythe operation of the means for locking the 'main valve.

The drawing is a vertical section through a device embodying the invention.

As illustrated in the drawing, the valve body I is mounted on the fluid container 2, the device controlling the flow of fluid through the outlet 3. In the body I, there is a main valve member 4 `cooperating with valve seat on body I, packing 6 being disposed on the face of member 4. The stem 1 of member 4 is screw-threaded into rod 8 which passes through guide member 9 screw- CII threaded into body I. The portion of rod 8 which passes through guide member 9 and extends from body I is screw-threaded at III. Rod 8 is provided with an auxiliary valve member II having packing I2 on its face co-operating with valve seat I3 on body I. The valve members 4 and II are so'related that when the rod 8 is lowered it unseats member 4 and seats member II, and when it is raised it seats member 4 and unseats member II. Between the seats 5 and I3, the body I has a passage I4 aording communication between the interior of the container 2 and the o-utlet 3.

Body I is provided with a Ypintle I5 on which is pivotally mounted an operating lever I6 having a transverse bore I1 through which passes the screw-threaded portion I8 of the rod 8. Threaded on the portion I8, below the lever i3, is a stop collar I8, the upper surface Iii-a of which is convex and co-operates with the edge I9 on the lower face of lever I6 about bore I1. Threaded on the portion I8, above the lever I6 is a stop collar 28, the lower surface 2I of which is convex and co-operates with the edge 22 on the upper face of the lever I8 about bore I1. The handle 23 of lever I6 may be manipulated by grasping it together with the handle 24 on body I, to move- 'lever' I6 downwardly. A latch 21 is pivoted on handle 24 at 28 and has notches 29 and 3!! in which handle 23 can be engaged when the latch 21 is swung into engaging position, for retaining lever I8 in either adjusted position.

From the foregoing description of the details I of construction of the device, its use and operation will be obvious. When the parts are in the relation shown in the drawing, the handle 23 engaged in the notch 30 of the latch 21 depresses the lever I6 which through the collar I8 depresses the rod 8 unseating valve member 4 and seatingv the valve member Il. Rotation of collar I8 about rod 8 will'cause rod 8 to be further depressed, since lever IG is held immovable by latch 21. The further depression of rod 8 causes valve member I i to be locked in intimate engagement with its seat I3'. When the latch 21 is swung to release the handle 23, the lever I6 can be moved upwardly and the handle 23 engaged in the notch 29 of the latch 21, thereby raising the rod 8 unseating valve member I I and seating valve member 4. Rotation of collar 20 about rod 8 will cause rod 8 to be further raised, since lever I6 is held immovable by latch 21. The further raising of rod 8 causes valve member 4 to be locked in intimate engagement with its seat 5.

As the passage I4 between the container 2 and the outlet 3 is completely isolated during passage of uid into or out of container 2, by the locking of valve member II on its seat I3, no packing for rod 8 will be necessary and suicient clearance between rod 8 and guide member 9 may be provided to permit rod 8 to slide easily therein.

From the foregoing it is obvious that the adjustment of the collars I8 and 20 relative to the rod 8, when the lever I6 is held immovable by the latch 21, determines the degree of sealing engagement of valve members 4 and II with their valve seats 5 and I3, respectively.

I claim:

In a valve assembly, the combination of a body provided with a longitudinal bore; an annular valve seat in said bore; a valve member coacting with said seat; a second annular valve seat in said bore; a second Valve member coacting with said second valve seat; a reciprocatory valve stem on which both members are mounted for unitary oscillation in said bore, the members being so related that when one member is seated the other member is unseated, and vice versa; a conduit communicating with said bore intermediate said seats; a lever pivoted on said body and connected with said stem for reciprocation thereof; locking means to prevent pivotal movement of said lever; a threaded extension on said stem; and the connection between the stem and lever including an adjustable stop threaded on said extension and co-acting with said lever when said lever is held immovable by said locking means, the adjustment of said stop determining the degree of sealing engagement of one of said valve members, when said valve member is seated.

VALENTIN REMUS.

Images