US1893066A - Float-actuated pump valve - Google Patents

Description

Z53 3%. a. F. ZfiLLHQEFER 193939056 FLOAT ACTUATED PUMP VALVE Filed July 27, 1931 2 Sheets-Sheet l 3, 1933., a. F. ZELLHOEFER FLOAT ACTUATED PUMP VALVE Filed July 27, 1931 2 Sheets-Sheet 2 m fi IINVENTOR G1. E/V/VE zsu wa sz BY f armada f machines employ a pump 29 iment o thereof. The mounting hatented den. 3, 1933 PATENT OFFICE GLENN F. ZELLHOEFEB,

OF BLOOMINGTON, ILLINOIS, ASSIG'NOR TO "WILLIAMS OIL-O- LLA'IIG HEATING COBIQBA'I'ION, OF BLOOMING'ION, ILLINOIS, A CORPORATION 01' ELHIGIQ FLOAT=ACTUATED PUMP VALVE This invention relates to improvements in pumps and more particularly to float operated valves therefor.

Some types of regenerative refrigerating actuated by the pressure of the gaseous refrigerant released from the solution in the still to trans ort the solution from the solution tank to t e still, such as shown in this applicants rior application, Serial No. 4:73, 186, filed ugust 6, 1930, and it is to this type i pump this nvention relates. It is an ob]ect or this invention to provide a simple and positive float operated mechanism for actuating the valves for admitting and exhausting the gaseous pressure in a pump of this type.

With these and other ob ects in vlew, reference is made to the accompanying sheets of drawin s which illustrate a preferred embodthis invention with the understandchanges mayl he made t ing that minor detail ereof,

without departing from the scope In the-drawings; Figure 1 is a view in vertical longitudinal 26 section through the pump casing of an embodiment of this invention, with some parts shown in side elevation.

Figure 2 is a view 1n transverse vertical section, taken on the line 2-2, Figure 1, with w parts shown in side elevation.

Figure 3 is a fragmentary view in longitudinal horizontal section taken on the line 3--3, Figure 1, with parts in top plane view.

Figure 4 is a fragmentary View in trans- 35 verse vertical section taken on the lined-4,

Figure 1,

lhe embodiment of this invention lllustrated includes a casing 1 having a screw threaded opening 2 in the bottom thereof with which is threaded a pipe 3 and a cover 4 having inlet and exhaust valves 5 and 6, respectively, and a depending mounting 7 for needle valve stems 8 and 9 coacting with the valves 5 and 6 secured upon the inner side 7 in addition to the guides 10 for the valve stems 8 and 9 is provided with a depending strap 11 providing bearings 12 for th free ends of a wish-hone bracket 13 which is mounted upon and ex- W tends hem a float 14. The bottom of the strap 11 is provided with a central upwardly extending member 15 provided with oppositely disposed conical bearing members 16 in line with similar conical bearing extensions 1? from the bearings 12.

A spring engaging actuating member 18 is mounted for oscillation between each pair of conical bearings 16-47 with parallel operating arms 19 extending in both directions from each actuating member. One operating arm 19 is mounted in line with the valve stems 8 and 9 and the bottom of each stem is cut out to embrace and be pivotally engaged with the arm 19 therebelow. This arm 19 is extended beyond the stem 8 evidenced in a vertical direction and terminates in two spaced apart fingers or stops 20. T he other operating arm 19 is provided with a transversely extending operating pin 21 adapted to travel, as the arm is oscillated, between the stops and upon further movement in engagement with a stop to impart movement in the same direction to the valve stem operating arm 19. The other end of the arm 19 carrying the operating pin 20 is likewise evidenced in a vertical direction and terminated in two similarly spaced apart fringes or stops 22. The side members 13 of the wish-bone bracket extending from the float 14 are joined by an operating rod 23 which is adapted to travel, as the float rises and falls between the stops 22 and upon further movement in engagement with a stop to impart movement in the same direction to the operating arm.

The upper ends of each actuating member 18 is in pivotal engagement with the lower end of a coil compression spring 24, the other end of which engages an adjustable anchor mounted in the mounting 7 above each respective actuating member, so that-as the float rises, the bar 23 engages the upper stop 22 imparting a rotation of the arm 19 causing the operating pin 21 to travel downward until it engages the sprlng 24 is thrown oil center which imparts a quick positive downward movement to the pin 21 whereby the evidenced end passes under the bar 23 until the lower stop 22 is brought with en gagement with the bar, and at the same time the pin 21 travels with engagement with the -bar 23 being in contact with the lower stop.

22 causesthat arm 19 to rotate, the actuating member thereon to compress its s ring 24 Y and the pin 21 to move towards t e upper stop on the other arm 19. Then as the lower end of the spring 24 passes over 1ts dead center, it gives a kick to the actuating member causing the pin 21 to engage the upper stop 20 to rotate the other arm 19 to pass the lower end of its spring 24 to pass its dead center to kick over the valve stem carrying arm 19, with the parts as shown in dotted lines in Figure 1, to close the valve 5 and open the valve 6.

In this type of pump the pipe 3 is adapted to be connected to the bottom of the solution tank, not shown,-by a T joint leading to each with a check valve in each handle allowing a flow of solution from the tank to the pump and from the pump to the still. The valve 5 is adapted to be connected to lead a portion of the gaseous refrigerant from the top .of the still therethrough. The valve 6 is adapted to be connected to lead the gas under pressure trapped in the pump to the solut on tank.

When the float 14 is at its lowermost position, the valve '5 is closed and the valve 6 opens so that solution enters the casing 1 causing the float to rise to its uppermost position thereby opening valve 5 and closing valve 6, whereupon pressure entering valve 5 faces the solution from the casing 1 closing the check valve in the branch to the tank and passing through the check valve into the still, and as the float descends, the valve 5 is closed and the valve 6 is opened allowing the solution to again flow into the casing from the tank.

By this means the solution Wlll be intermittently and automatically transferred from the tank to the still. The buoyancy of the'float as the, liquid level rises overcomes the tension of the springs 24, then releases them to cause a quick and positive opening of valve 5 and simultaneous closing of valve 6. As the liquid level recedes, the weight of the float reverses the first action of the valve operatin mechanism.

. What claim is:

1 In a pump having a casing with an orifice for admitting and ischarging a-liquid, valves for admitting and discharging pressure, respectively, above the liquid in said casing, a float actuated means for opening one valve and simultaneously closing the other including reciprocable valve stems mounted on a pivoted operating arm, a spring pressed. actuator on said arm, and means controlled by the position ofthe float (provided ischargmeans controlled by the position of the float r to throw the actuator against its spring from one position to the other to 0 en one valve and close the other valve, inc uding a pivoted float bracket, an additional operating arm having a lost motion connection with said bracket and with said valve stem operating arm.

3. In a pump having a casing provided with an orifice for admitting and discharging a liquid, valves for admitting and dischar ing pressure, respectively, above the liquid in said casing, inlg one valve and simultaneously closing the ot er including reciprocable valve stems mounted on a pressed actuator on said arm, and means controlled by the position of the float to throw the actuator against its spring from one position to the other to open one valve and close the other valve, including a pivoted float bracket, an additional operating arm having a lost motion connection with said bracket and with said valve stem operating arm, and a spring pressed actuator on said additional operatin arm. I

4. A oat operated mechanism for closing one valve and opening another valve, inolud- 2 a float actuated means for openpivoted operating arm, a spring ing a valve stem for each valve pivotallymounted upon a pivoted operating arm on opposite sides of its pivotal point,.an actuating member carried on the operating arm'extending from its pivotal point, a s ring engaging the actuator normally ho ding one valve closed and the other open, a float carrying bracket pivoted in line with the operating arm pivot, and means pivoted in hne with the operating arm pivot interposed between the bracket and the operating arm adapted at a. predetermined high and low position of the float to throw the operating arm actuator.

5. A float operated mechanism for closing one valve and opening another valve, includ--- ing a valve stem for each valve pivotally mounted upon a pivoted operating arm on I opposite sides of its pivotal point, an actuatmg member carried on the operating arm extending from its pivotal point, a spring engaging the actuator normally holding one valve closed andthe other open, a float carrying bracket pivoted in line with the operating arm pivot, and means pivoted in line with the operating arm pivot interposed between the Leee oee 3 bracket and the operating, arm adapted at a gredetermined high and low position of the oat to throw the operating arm actuator, said means including an arm having a lost motion connection with the operating arm at one end and a lost motion connection at the other side of its pivot with a float bracket with an actuating member carried thereon extending from its pivotal point, 10 and a spring engaging the said actuator normally holding said arm with its lost motion connections at the respective ends of their travel, whereby movement of the float in the opposite direction first throws one 15 actuator to cause the respective connections to move to the other ends of their travel and the contacts so made then throws the other actuator whereupon the positions of the valve stems are reversed. 2o GLENN F. ZELLHOEFER.

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