US1607324A - Automatic plate valve - Google Patents

Description

Patented Nov. 16, 1926. i I UNITED STATES PATENT OFFICE.

JOHANN HEINRICH HERMANII VOSS, OF PALISADES PARK, NEW JERSEY, ASSIGNOB T WORTHINGTON"PUMP AND MACHINERY CORPORATION, A CORPORATION OF" VIRGINIA.

AUTOMATIC PLATE VALVE.

Application filed December 8, 1919. Serial No. 343,379.

My invention relates to automatic plate a flat section bow spring or any adaptable valves, in which the valve plate consists of spring. a simple strip-shaped plate or ribbon of For this purpose I mount the valve plate constant section and shaped ends which lie on the valve seat so that, by its upturned extended on the valve seat, is weakened ends, it is suspended, and sidewise and so neither by holes nor slots, and is opened by lengthwise guided in open rectangular stalls the flowing medium and closed by its own formed in the cap or arrester, or in a conelasticity or by means of a spring or springs veniently shaped holder attached to the seat, pressing on the plate. and so that it moves snugly within the de- In ordinary plate valves of this type the sired limits, being supported on large bear- 5 strip-shaped plate is either attached at one ing surfaces at all sides; the upturned ends end and the other end is movable longitudiof the valve plates may be resilient or rigid. nally to enable the plate to bend upward, Further purposes of my invention will or the valve strip is unattached and the appear in the specification and are specificalstrip bends upward unrestrained, the valve ly pointed out in the accompanying claims. strip being guided in slots and recesses Referring to the drawings, in which like formed in the valve seat and the cap or parts are similarly designated arrester. In such valves, when moving, one Figure l is a plan view of an assembled end of the valve plate or both bear down valve; Figure 2 is a section of Figure 1 on 0 on the valve seat supporting themselves on the line IIII showing the closed position a thin line or on an edge. In some cases the of a single strip valve and the arched cap strip-shaped plate is lifted bodily and section; Figure 3 is a section of Figure 1 on squarely from the seat either with or withthe line II-II showing the open position of out bending and guided together with a a single strip valve and the arched cap 25 superposed fiat section bow spring in a flow section; Figure 4 is a section of Figure 1 hole drilled in the arrester at the end of the on the line IIIIII; Figure 5 is 'an end late. View of Figure 1; Figure 6 shows a longi- These and similar methods of bending and tudinal section through a valve with a guiding the strip-shaped valve plate have superposed bow spring and straight cap sec- 30 the drawback that no substantially dimcntion; Figure 7 shows a longitudinal section sioned surfaces are-provided at the places through another form of single strip valve of contact of the moving valve strip and the with backing springs imbedded in the straight seat or thecap. The contact between the cap section; Figure 8 shows a transverse secvalve strip and the seat, the cap or the guide tion of Figure 7 on the line VII-VIl:

is merely on a thin line or on an edge and Figure 9 is a longitudinal section of a modiin some cases there may be wear by friction fied single strip valve in closed position and scraping especially if accelerated by with endwise pivotal holders and without the effect of grit and dirt accumulating in cap; Figure 10 shows the same valve as in the guiding recesses and slots. Figure 9 but in flexed. open position; Fig- 4! The object of my invention is to provide ure 11 is a transverse section of. Figure 10 '95 a plate Valve to which the above described on the line X-X; Figure 12 is a modified defects are not attached and which can be form of the valve shown in Figures 9, 10 of two forms so as to act in two ways. and 11 and shows an elastic, arched bolster First, by being, on opening, partways lifted in place of the cap and the valve strip in 4 ofl its seat, then bent upward on a uniform closed position.

bending line by the flowing medium so as In Figures 1, 2, 3, 4 and 5 I have shown not to bear its ends on the valve seat for ribbon valves 5 housed between the seat 2 support; on closing, by being straightened and the arched cap section 3. The ends of up on release of the bending pressure and the valve plates 5 are bent upward at an being finally seated by the vibratory swingangle of about 90 degrees with an ample 1% ing motion resulting at the end of the bending radius at the corners. The upstraightening movement of the valve strip. turned ends of the valve strip are guided Second, by being lifted bodily and equally longitudinally. transverselyand vertically in by the flowing medium'throughout its enopen stalls 8 formed in the cap section and 55 tire length and closed by means of either which .have their corners 9 rounded so as to correspond with the curvature of the ends of the valve strips 5. Guided in the manner shown, the valve plates 5 are kept in proper working position over the How slots 4 located in the seat 2, opening and closing between the flow passages 10 formed in the cap 3 in parallel but staggered arrangement to the portslots it. It will be observed that the cap 3 is kept at a certain distance from the seat 2 by means of distance rings 11 so that the valve strip 5 is lifted parallel off its seat until it strikes against the rounded corners 9 and then only bends uniformly into the how 18 of the arched wall section 12. The position shown in Figure 3 shows that, when open, the valve strip 5 does not touch the seat but is held up by the fluid pressure and clings to the curvature 18 of the cap 3, its upturned ends oscillating slightly, with the bending of the plate 5, being embraced and guided within the walls of the open stall 8. When closing the valve plate returns first to the straight fiat position and by force of its inertia swings toward the seat witlrits center part and closes finally with a gliding motion starting from the center and seating without return action known as chattering. As thus housed between the cap and the seat, the valve plate is so guided that there is no edge or thin line contact of the valve plate with the seat such as would cause scraping. There is no recess or corner to accumulate any matter liable to cause obstruction and the gas flows both in an upward and sideways direction away from the flow slots 4, unhindered by side walls or recesses.

In Figure 6 I have shown a valve strip 5 with upturned ends and an interposed fiat section bow spring 6 having its ends turned upward in the same manner as the valve strip 5 but so dimensioned that the spring 6 is located within the upturned ends of the valve plate 5, the curvatures of the stall corners 9 and of the ends of the bow spring .6 and the plate 5 being amply dimensioned and fitting into each other with enough play between them so that no strain results from the elongation of the spring 6 when in the straight flat position. The cap 3 is kept at the desired distance from the seat 2 by distance rings 11 and held together with bolts in the same manner as shown in Figures 1 to 5. The valve plate 5 and its seating spring 6 are both guided in three directions by means of the upturned ends fitting into the open stalls 8 of the cap 3. There is no contact on an edge or a thin line. Obviously the upturned endsof the plate 5 and the spring 6 keep the member on which they are formed from tilting at all times, thus making the valve plate independent of the, flat bow spring to keep it from tilting. In the case of the Figure 6 the valve plates 5 may be so thin as to bend when opening and the spring 6 may be so dimensioned as to bend only enough so as to keep the ends of the plate 5 away from the seat. when in open position or the principal bending may be done by the spring."

The valve shown in Figures 7 and 8 comprises the use of backing springs 7 which are imbedded in trenchlike grooves 13 with adjacent recesses 20 located in the wall section 12 of the cap 3. These springs are of the :"ame type and are here used for the same purpoi'e as I have shown and claimed in my Patent No. 1,343,534. The valve strip 5 is guided with its upturned ends in the open stalls S. In opening the valve 5 is lifted squarely and equally along its entire length off its seat 2 over the flow slot. 4, gliding on substantial surfaces. During the opening movement the helical springs 7 retreat into the trenchlike grooves 13. Kinking and tilting is effectually prevented by the sidewise guidance of the upturned ends in the open stalls 8 and as there is no contact on a scraping edge or on athin line the guiding effectively prevents catching of the plates, making the valve especially valuable for high speed operation above 200 revolutions per minute.

In the foregoing Figures 6, 7 and 8, both the seat section 2 and the cap section 3 have their passage slots 4 and 10 respectively terminating in plane surfaces which are kept at a certain distance from each other by the rings 11 to afford an adequate lift to the valve plates 5. There are no guiding recesses, chambers or drilled flow passages on any of the parts of the valves under this invention. All parts are or may be simple castings easily manufactured by the simplest machining processes and affording the most ready and easy passage 'for the flowing medium all around the valve plate in upward and sideward direction. Furthermore it is observed that in all valves shown in Figures 1 to 8 the assembling is facilitated to a larve degree as the valve strips 5 are readily placed into the open stalls 8 of the cap 3 then the seat 2 is easily located in the right position on top and the whole, the rings 11 being interposed, clamped together with the bolts 1. This facility in assembling is especially desirable when adjustments are made outside of the producing workshop and where no special assembling tools or fixtures are procurable.

The valve shown in Figures 9. 10 and 11 has its ends turned upward and bent to an approximate circular shape fitting around pivots or arbors 14 located near the ends of the flow slots 4 of the seat 2. The pivots 14 are conveniently formed by turning them into a rectangular guard 17 made of steel or other appropriate material of somewhatlarger side dimension than the diameter of the pivot so that by turning the pivot from the full material, side surfaces 15 are formed which serve to guide the ends of the plates 5 as in open stalls in the same manner as shown in the preceding figures. The distance of the lowest point of the pivot from the seat is so dimensioned as to allow free-. dom of action and afford a certain initial lift to the valve plate 5. When open the, valve plate is unrestricted by a cap, merely being held by the ends fitting around the pivots 14. In shaping the ends of the valve plate to fit the pivots a double curvature is given them to allow for a small initial lift which keeps the valve, when open, from contact with the seat. When closed the upper part of the pivot 14 contacts with the valve plate, when open, the lower part of 14 contacts with the valve plate, the ends of which are tightly pressed against the pivot by the fluid pressure. In all positions the 'valve strip 5 is sidewise and lengthwise guided by the side surfaces 15 and by the pivots 14.

In Figure 12 I show a valve strip 5 that is mounted in a similar manner as the one in Figures 9 and 10 but with an elastic bolster or keeper 16 interposed between the valve strip 5 and the pivots 14. The bolster 16 is shaped like a bow and its ends cling snugl around the pivots 14. It is madeof a resi ient but stronger material than the valve plate so as to yield only slightly when the open valve strip 5 presses against it. The ends of the valve plate 5 are shaped around the outer diameter of the ends of the bolster 16, a double curvature being given to the ends to afford them freedom of action in lifting the valve strip initially to keep it from contact with theseat when moving.

Also in the valves shown in Figures 9, 10, 11 and 12 assembling is very simple as the shaped ends of the plates 5 are readily placed around the arbors 14 which are then bolted to the seat2 by means of bolts 1 and kept in position by dowels 19.

In all cases illustrated in the figures it is observed that in plate or ribbon'valves according to thistinvent-ion the egress. of the fluid is greatly facilitated and proceeds to all sides of the valve plate with practically equal velocity there being no recesses, side walls or enclosed chambers forcing an ab:

rupt stop or change of direction of the fluid. The absence of side walls and the fact that the fluid can escape to all sides in upward and sideward direction effectually prevents wire-drawing and itsundesirable reaction on the valve plate.

The arrangement of the elastic valve plates and springs obviously may vary from the types shown in the different figures. M The valve plate may bend on a uniform bending line or be lifted equally and parallel as its seat within the broader features of the invention. Seating springs of the type shown, or additional or different springs, may be used, but it is desirable that in all cases the plates are guided by their shaped ends and that there is no contact on an edge or a thin line between the valve plates and the seat, and it will be understood that various changes, substitutions and modifications may be made in size and arrangement ofthe parts without departing from the invention as specified in the following claims.

plates from edge contact with the seat section.-

' 2. A plate or ribbon valve comprising a ported seating section, a cap section secured to said seating section, a valve plate having its ends turned away from the seating section and moving in an open space terminating in'open rectangular slots at the ends of the cap section at a distance from the seating section to allow thevalve plate to freely bend in the center with its ends out of contact with. the valve seat. I

3. A plate or ribbon valve comprising a ported seating section, a ca section secured to said seating section wit an open space between them, a valve plate having its ends turned away from the said seating section and moving in an open space terminating in open rectangular slots at the ends of the cap section shaped to guide the said valve plate over its port and. allow the ends of the valve plate to oscillate when the valve plate bends. i v

4. A plate or ribbon valve comprising a seating section, and ancap -.section..-spaced apart, a port in said seating section, a stripshapedspring pressed valve plate disposed between said sections closing said port having ends turned away from said seating section. and embraced by open rectan lar guide slots formed at the ends of sai cap sectiom v,

5. A plate or ribbon valve comprising a seating section and a cap section spaced apart,a port in said seating section, a stripshaped' valve plate and rposed flat section' bow spring both having their ends in contact and turned away from said seating section and embraced by open rectangular guideslots formed at the ends of said cap section. 6. The combinat on with a valve seat having one or more ports, of a thin elastic plate for each port free to lift and bend uniformly to open and close the port and'having its ends bent away from the valve seat to avoid an edge in contact with the seat, and an abutment for the valve having curved surfaces coacting with curved portions joining the valve and its bent ends in the bending movement of the valve.

7. The combination with a valve seat having one or more ports, of a thin elastic plate for each port free to lift and bend uniformly to open and close the port and having its ends bent away from the valve seat to avoid an edge in contact with the seat, and an abutment for the valve having curved sur- 15 to lift bodily for bending with its ends out 20 of contact witl1-tl1e seat.

In testimony whereof I have hereunto set my hand.

' JOHANN HEINRICH HERMANN V055.

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