US1695318A

US1695318A - Pumping apparatus

Info

Publication number: US1695318A
Application number: US622462A
Authority: US
Inventors: George A Buvinger; Warner Clarence
Original assignee: Individual
Current assignee: Delco Light Co
Priority date: 1921-11-18
Filing date: 1923-03-02
Publication date: 1928-12-18
Anticipated expiration: 1945-12-18

Description

Dec. 18, 1928.

'G. A. BUVINGER ET AL PUMPI NG APPARATUS Original Filed Nov. 18. 1921 2 Sheets-Sheet 5 u mi 0 mm H v a? 4 m n 7. Z WM 12* e 5mg Patented Dec. 18, 1928.

' UNITED STATES.

PATENT OFFICE...

GEORGE A. BUVINGER AND CLARENCE WARNER, OF DAYTON, OHIO; ASSIGNO'RS TO DELCO-LIGHT COMPANY, OF DAYTON, OHIO, A CORPORATION OF DELAWARE;

PUMPING APPARATUS.

Original application filed November 18, 1921, Serial No. 516,159. Divided and this application filed March 2, 1923. Serial No. 622,462.

The present invention relates to pump, and particularly to the suction type of pump in which the pumping apparatus is located above the well or cistern from which the water is being pumped.v

The present application is adivision of our copending application, Serial No. 516,159, filed November 18, 1921.

It is an object of the present invention to provide a priming device for pumps of water systems which will maintain the pump in a primed condition and which is simple 111 construction and which can be readily attached to the pump.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preterred embodiment of one form of the present invention is clearly shown.

In the drawings:

1 is a horizontal sectional view of awell known type of pump head for suction pumps, the section being taken on line 11 of Fig. 2;

2 is a vertical sectional view taken on lines 2-2 and 2'-2 of Fig. 1, showing the improved priming attachment in operating position;

Fig. 3 is an enlarged sectional view of one of the discharge valves;

Fig. 1 is a diagrammatic sectional view of the pump head and priming device, showing the operating relation therebetween, and

Fig. 5 is a side view of an improved water system provided with the improved priming device.

Referring to the drawings, 20 is a storage tan carried by brackets 21. A. pump unit 22 is supported above the tank 20 and has an inlet pipe 23 andan outlet pipe 24. Pipe 2 carries the water from the pump unit to the tank from which through pipe 25.

The pump unit 22 includes a pump head 33 of the well known type used in suction pump. Head is connectel with the inlet pipe 23 leading from a well or cistern and with a priming device 40. Priming device 40 is connected with a storage tank or a system being supplied by the outlet pipe 24.

Pump head 33 carries a cylinder 34 in which.

a piston 35 is adapted to operate, the piston 35 being reciprocated by a piston rod 36.

it is distributed as desired Referring now to Figs. 1 and 2 whichshow the details of construction-of thepump head;

it will be observed that the pump employedi is of the double-acting type in which water. is drawn from asuction chamber. 83 into-the pulsation or

pumping chambers

86 and 89-- and then forced into a discharge-chamber87,

from whence it passes through the priming-device 10 to the pipe 24, ashereatter m0re.;1'ully described. The suction-chamber 83 isincom munication'with a dome-like chamber 81 havlng a partition wall 82, as shown, Wl11Cl1=.

chamber is in turn connected with the inlet pipe 23through the passage 80. Thesuction chamber 83 is connected to the pulsation chamber 86 by means of an opening. An inlet valve 85in the opening permitsthe flow ofi water fromthe suction chamber 83 into thepulsation chamber 86 but prevents thewater from fiowing'i rom the-pulsation chamber'86 into the suction chamber 83. Alsothe pulsation chamber-SG-is connected; to thedischarge chamber 87 by means of an opening inwhich a discharge valve 88 islocate'd. Discharge valve 88 permit-s water to iiow from the-p111;- sation chamber 86, to the dischargecliamber 87 but normally prevents the return of thewater from said discharge chamber 87to the pulsation chamber 86. The pulsation chame- 7 her 89 is in communication with the suction; chamber 83 and Wltli the discharge chamber The valve 88 comprises a seat portion 105- having a projecting lug 106 into which is screwed the valve stem 107 carrying a slid able rubber valve member 108 which is nor-- mally held upon the seat 105 by means of a. spring 109. Valve seat 105 is provided with a scratch 110 (see Fig. 3) which permits the passage of water from the discharge chamber 86 to the pulsation chamber 89, permitting permanent intercommunication between these chambers for a purpose to be hereinafter described. I I

Drain openings

90, 91, 92. and 93 are vided in discharge chamber 87,

pulsation chambers

89 and 86 and suction chamber 83, respectively, these openings each being con.- trolled by valves 95 whereby'all ot the chambers maybe drained to prevent freezing. The:

valve controlling the opening 93 leading to the suction chamber 88 also functions as an air inlet to the pump head for a purpose to be hereinafter explained.

Suitably attached to the pump head by means of bolts 97 is the priming device 40. Priming device 40 is provided with an opening 98 which communicates with the discharge chamber 87 of the pump head. The priming device carries a coupling 99 to which a pipe 100 is connected which projects upwardly into the priming device. The outlet pipe 24 is connected to the other end of the couple. Attached to the lower end of the priming device and in communication with the interior thereof, is a pressure tube 102 which is connected at its other end to a suitable pressure pump control mechanism.

Assuming that the inlet pipe 23,

pump head chamber

80, 81, 88, 86, 89, and 87, andthe priming device, are full of water and the piston moves forward, that is from the left to right as viewed in Fig. l, a partial vacuum will be created in the pulsation chamber 86. Atmospheric pressure on the water in the well will be transmitted to the suction chamber 88 by the water in the pipe 28. The pressure in the suction chamber 88 will lift the inlet valve 85 from its seat, permitting water to enter the pulsation chamber 86. ll ow when the piston moves in the backward direction the valve 85 will be closed and the water will be forced upwardly into the discharge chamber 87, past the discharge valve 88. While these movements of the piston are taking place, the valves controlling the inlet and outlet to the pulsation chamber 89 will move in the reverse order, that is, when the piston moves forward the discharge valve connected with pulsation chamber 86 will be lifted and inlet valve 85 leading from the suction chamber to the pulation chamber 89, will be closed. :In this manner a continuous discharge of water is obtained into the discharge chamber 87. From discharge chamber 87 the water flows through the opening 98 into the priming device l0, and thence through the priming device into the pipe 100, outlet pipe 2 2.

The storage tank usually employed in the type of water system to which the present pump head is applied is closed to atmosphere so that as water is forced into the tank, the air therein will be trapped and compressed.

Because of the direct connection of the storage tank to the priming device 40 by means of pipe 24:, the pressure in the priming device 40 and pipe will be the same as that in the tank. Therefore the pressure impressed upon the pump control mechanism through the tube 102 is the same as that in the tank. This pressure is adapted to cause the pump control mechanism to actuate to control the motor to maintain a desirable pressure within the tank. Due to the absorption of the air by the water in the tank, it is necessary to re- Leena 1e plenish the tank with air in order that the proper relation may be maintained between the pressure and the water level in the tank. When it is necessary to replenish the tank with air, the valve 95 leading into the suction chamber 83 is opened slightly during the pumping operation, permitting air to be drawninto the pump head and then forced into the tank by the action of the piston.

The pressure in the priming device a0 also normally tends to force water through the scratch 110, in the valve seat 105, into the pulsation chamber 86 so that pulsation chamber 86 is always filled with water, the purpose of which will now be described: Should it happen that air would enter the inlet pipe 28, in any way, as by a leaky connection in said pipe, the water woulddrain out. Then, when it is desired to again pump water it will be necessary to pump the air out of the pipe 28. This is done in the following manner: Referring now particularly to Fig. l, in which the pump head is shown diagrammatically, the priming device a0, discharge chamber 87, and pulsating chamber 86, are substantially full of water. Now as the piston moves forward the inlet valve 85 will be liftedand a quantity of air will be drawn into the pulsation chamber. On the backward stroke, the valve 88 will open permitting a large portion of the water and air to be forced out of the pulsar tion chamber 86 into the discharge chamber 87. Some of the water in the priming device will be forced down the

pipes

100 and 24 into the tank While the air will be trapped at the top of the priming device 40. When the piston again moves forward, the air remaining in the pulsation chamber 86 will expand and since but a relatively small quantity of water and a large quantity of air are contained within the pulsation chamber 86, the expansion of the air is not sufficient to decrease the pressru'e to a point sufficiently low to cause the valve .85 to lift. However, due to the vressure in the priming device 40 and discharge chamber 87 and the relatively low pressure in the pulsation chamber 86, water will be forced from the discharge chamber 87 and priming device 40 through the scratch 110, in the valve-seat 105, into the pulsation chamber On the backward stroke, due to the increased volume of water in the pulsation chamber, the pressure in the pulsation chamber 86 will be higher than that in the discharge chamber 8? which will permit air to be forced out of the pulsation chamber 86 into the discharge chamber 87. This cycle of pumping water into and air out of the pulsation chamber 86 continues until only a small quantity of air remains. With only a small quantity of air in the pulsation chamber 86, the pressure therein is lowered below the pressure in the suction chamber 83, thereby causing valve 85 to be lifted permitting another quantity of air to enter the pulsation chamlZll ber '86. This air is disposed of in the same manner as was previously described and this operation continues until all the air is pumped out of pipe 23. After all of the air has been pumped out of the pipe 23, the pressure on the water in the well will have forced the water up through the pipe 28 into the suction chamber 83 and the pump is again ready for its water pumping operation.

It will readily be understood that if the inlet 28 is of considerable length a low pressure is necessary in the suction chamber 83 in order that the water may be lifted into said chamber. f a very low pressure is necessary in the suction chamber 83 a still lower pressure must be obtained in the pulsation chamber 86, therefore, a. large amount of water is necessary in the pulsation chamber 86 and only a small quantity of air. The pipe 100 in the priming device extends upwardly into the priming device 40, as shown, bringing the hydrostatic level in the priming device near the top. With the hydrostatic water level near the top of the priming device 40, enough water can be contained within the primary device a0 and discharge chamber 87 to fill the pulsation chamber 86 with water. l/Vhen the pulsation chamber 86 is filled with water and the piston is moved forward, the desired low pressure is obtained in the chamber.

Due to the high pressure in the priming device 40 and discharge chamber 87, water is forced from the chamber 87 into the pulsation chamber 86, through the scratch 110 in the valve seat 105, at a high velocity when the piston moves forward. With water flowing into the pulsation chamber at a high velocity, during the self priming operation, the pulsation chamber 86 is quickly lilled with water and in his manner the time necessary for priming the pump is reduced to a minimum.

It will be apparent from the foregoing that there is provided a water system of the type in which the tank is located below the pump and in which system the pump is primed auton'iatically.

A priming device as is herein disclosed may be readily attached to the usual type of pump system and in so doing the system can be made self priming. Also with slight alteration in the capacity of the priming device ant. in the location of the holes for the bolts 97, the priming device 40 can be attached to different types of pumps.

Should this pump unit be installed where the temperature is such that the water remaining in the pump head is likely to freeze, it may be desirable to drain all the pump head chambers and the priming device which may lVhile the form of mechanism herein shown and described constitutes a preferred embodiment of one-form of invention, it is to be understood that other forms might be adopted and various changes and alterations made in the shape, size, and proportion of the elements therein without departing from the spirit and scope of the invention.

What is claimed is as follows 1. In combination, a pump including a pumping chamber, a discharge chamber, and a wall between said chambers, said wall having an opening therethrough for providing permanent intercommunication between the chambers,and a priming chamber located above said pumping chamber and in communication therewith, said priming chamber and discharge chamber being adapted to contain sufficient quantity of liquid for priming said pumping chamber.

2. In combination, a pump including a pumping chamber, a discharge chamber, and a wall between said chambers, said wall having an opening therethrough for providing permanent mtercommunication between the chambers, and a priming chamber located above said pumping chamber and in communication therewith, said priming chamber and discharge chamber having a capacity substantially equal to the capacity of the pumping chamber.

3. In combination, a pump having a pumping chamber and a discharge passage and a priming device detachably secured to the exterior of said pump and having a storage chamber connected with the discharge passage and located above said pumping chamher.

4;. In combination, a pump having a pumping chamber and a discharge passage, and a priming device detachably secured to the exterior of said pump and having a storage chamber connected with the discharge passage, and a discharge conduit for the storage chamber having a portion located above said pumping chamber.

In testimony whereof we hereto affix our signatures.

GEORGE A. BUVINGER. CLARENCE IVARNER.