US2429898A - Liquid pumping apparatus - Google Patents

Description

Oct. 28, 1947. F. A. sous 2,429,898

LIQUID PUMPING APPARATU:

Filed Jan. 24, 1947 2 Sheets-Sheet 1 x N a 000 on O 4 7 25 Oct. 28, 1947. F. A. sous LIQUID PUMPING A PPARATUS Filed Jan. 24, 1947 2 Sheets-Sheet 2 v M ay% I Patented Oct. 28, 1947 LIQUID PUMPING APPARATUS F austo Arzalluz Solis, Habana, Cuba, assignor to Julian Solis Sanchez and Alberto Solis Cepero, both of Ranchuelo, Cuba Application January 24,1947, Serial No. 724,102

4 Claims.

This apparatus relates to apparatus for pumping liquids, and it has for its object to provide an apparatus of that kind adapted to pump water in a continuous stream from deep wells, rivers, dams, ponds, etc.

It is a well-known fact that single action pumps operate intermittently, that is, they do not cause a continuous stream of liquid, owing to that the same suck the liquid up during the movement of their plunger in one direction while they force the liquid out in the opposed movement of their plunger.

Such disadvantage is obviated by the mechanical apparatus of this invention, which comprises a vertical cylinder provided with two plungers, the cylinder being in communication at each pposed end by a tube having a check valve with a water in-take also provided with a check valve and with the liquid outlet, whereby in the move ment of both plungers at a time in one direction, one plunger sucks up the liquid while the other plunger forces out the previously sucked up liquid, and in the opposed movement of both plungers at a time, the plunger that previously sucked up the liquid will now force out the liquid while the other plunger that previously forced out the liquid will now suck up the liquid, with the result that a continuous stream of liquid is forced out through the outlet that is common to both tubes connected with the cylinder, the whole being a simple structure formed by commercial tubes and metal parts which can be economically assembled at farms or other places for pumping water from deep wells, rivers, etc., with a minimum requirement of power which can even be applied by hand.

The invention is described with reference to the figures of the accompanying drawings, of

which: Y

Fig. 1 is an outer elevational view of the apparatus of this invention.

Fig.-2 is a diametral vertical section view of same, showing the two plungers at their lower end position.

Fig. 3 is a similar view to that of Fig. 2, showing the two plungers at their upper end position.

Fig. 4 is a horizontal View on line 4-4 of Fig. 1.

And Fig. 5 is a detailed diametral vertical section view of the plungers-carrying cylinder illustating the structure of one of the plungers.

The apparatus of this invention is composed of a cylinder l preferably made of brass and of a diameter of 3 inches and a length of 32 inches, which is open at both ends where it is provided with an outer 1-inch fine thread adapted to threadedly receive threaded brass caps 2 and 3 of a thickness of 2 inches and a diameter of 3 inches. The lower cap 2 has a central threaded opening adapted to threadedly receive a liquid sucking galvanized tube 4 of an outer diameter of 1 /2 inches and ending inferiorly in a water in-take casing 5 having an inner vertical check valve 6 and a strainer 1 at the inlet opening.

The tube 4 is connected intermediate its ends through a coupling joint 8 with an elbowed tube 9 connected with the inlet opening of another casing lll having an inner vertical check valve H and the outlet opening of which is in turn connected with a cast iron vertical tube l2 extending upwardly beyond the top end of the cylinder and being connected through a galvanized universal joint [3 with the left side branch of a cast iron T-shaped member l4 having on top thereof an outlet orifice of 1 /2 inches to lead the raised liquid to the desired place. The central branch of the member M is adapted to give way therethrough to the brass stem l5 of a thickness inch, which is connected to the upper plunger and said central branch of member I4 is provided with a lower outer thread to engage a threaded nipple l6 having a conical upper end and a cylindrical lower end and which is secured by autogenous welding to the cap 2. The latter having on top thereof a reduced extension 2.

The cap 2 and its extension 2 have a central hole to loosely allow the passage of the stem l5 about which there is disposed within the hole of cap 2' and its extension 2' a press-joint formed by an upper brass cylindrical press member I! screwed on the inner threaded surface of the extension 2, a packing refilling l8 and a lower threaded nut l9 screwed on the innerly threaded surface of the cap 2 thereby closing the pressjoint inferiorly.

The cylinder I has at a side of its top portion a flow opening 20 of 1 /2 inches, to which is welded the cast iron T member 2| connected through its lower threaded opening with the vertical galvanized iron tube 22 ending inferiorly at a level with the valve casing 5 in another water in-take casing 23 having an inner vertical check valve 24 and a strainer 25 at the inlet opening, and the T member 2| is connected at its top threaded opening with a casing 21 having an inner vertical check valve 28 and which in turn is connected at it's top opening and through a threaded nipple 29 with the universal joint 30 screwed on the end of the right-side branch of the T-shaped ers connected by the brass rod 3|. The upper plunger is suspended from the lower end of the stem I5 and the lower plunger is suspended from the lower end of the rod 3|, The lower plunger is composed (Fig. 5) of an outerly threaded core 32 having a lower head 32, on which there are mounted four leather washers 33, 34, 35-and 38 disposed alternately with cast iron ring- nuts 31, 38, 39, 40 and 4| which are screwed on the core 32, with the peculiarity that the lower leather washers 35 and 36 are curved downward at their periphery and the upper leather washers 33 and 34 are curved upward at their periphery, and on the top end of the core 32 there is screwed the nut 42 that presses on the upper ring '31, the core having a top central hole 43 with a threaded surface to threadedly receive the threaded end of the rod 3 I.

The upper plunger is formed similarly, only that the upper leather washers 33' and 34 are curved downward at their periphery and the lower leather washers 35' and 36' are curved upward at their periphery, the head of their core having a threaded hole to engage the upper threaded end of the rod 3| and the core having a threaded hOle to engage the lower threaded end of the stem I5.

The operation of this apparatus is as follows: Assuming the suction pipes fed and the lower plunger being at the lower portion of the cylinder I (Fig. 2), the lower plunger in its upward movement produces suction through valve 6 while atmospheric pressure maintains the valve I I closed, whereupon the space inferiorly to the lower plunger within the cylinder I is filled with water. In said upward movement" the upper plunger forces through opening 20, T member 2|, nipple 26, valve 28, nipple 29, joint 30, right branch of T-member I4 and top outlet opening of member I4, the liquid that occupied the space of cylinder I situated directly above the upper plunger, the valve 24 remaining closed. On the contrary, in its next or downward movement, the upper plunger produces suction through tube 22 and valve 24, the space of cylinder I remaining above said upper plunger becoming filled with water, and the valve 28 remaining closed by atmospheric pressure, and the lower plunger forces the water that was contained in the space of cylinder I beneath the lower plunger out through the elbowed tube 9, valve II, vertical tube I2, union I3 and left branch of T-member I4, the valve 6 remaining closed. As the lower plunger reaches the lower end of cylinder I, the previous movement cycle is repeated, and so forth.

The result is that in the opposed movements, two streams of water come out through the upper outlet tube and gather uninterruptedly to form a continuous stream. The stem I5 is adapted to receive the action of a power transmitted which may be either mechanical or manual.

It is obvious that changes may be made in the construction details of the tubes connecting the cylinder to the water in-takes and to the outlet for raised liquid, without thereby altering the essential character of the invention which is such as claimed hereinafter.

What I claim is: l

1. A mechanical apparatus for raising a continuous stream of liquid, comprising a cylinder having perforated threaded caps at its ends, tubes connecting orifices in the opposed ends of the cylinder with two spaced apart liquid intakes each provided with a check valve, a three-branch member for raised liquid outlet which is mounted at its central branch on the upper cap of the cylinder, a stem loosely passing across the central branch of said three-branch member into the file of this patent:

cylinder, tubes connecting the side branches of said three-branch member with the tube connecting the lower end of the cylinder with its the cylinder and connected by a rod and of which the upper plunger is connected with said stem, and means for causing the slidable movement of the stem in opposed directions. k

2. A mechanical apparatus for raising a continuous stream of liquid, according to claim 1, wherein the central branch of the upper threebranch member is connected with the upper cap of the cylinder by a nipple screwed on said central branch and welded to said upper cap, said cap having a central hole loosely lodging the slidable stem and about the latter a wate press-joint comprising an upper press member screwed on the threaded inner surface of the cap, a packing filling, and a lower nut screwed on the inner surface of said cap to obturate inferiorly the central hole of said cap.

3. A mechanical apparatus for raising a con tinuous stream of liquid, according to claim 1, wherein each of the plungers is composed of an outerly threaded core having a head, a series of inter-spaced leather washers disposed on said core, ring nuts screwed on the core alternately to said washers, and a nut screwed on the reduced end of the core to tighten the hole formed by said washers and ring nuts upon the core.

4. A mechanical apparatus for raising a continuous stream of liquid, according to claim 3, wherein half of the leather washers of each plunger are in an inverted position relatively to the other half of the washers of same plunger, and the washers of one plunger are in inverted position relatively to those of l-the other. plunger.

' FAUSTO ARZALLUZ SOLIS.

REFERENCES CITED The following references are of record in the UNITED STATES PATENTS I Number Name Date 358,909 WllCOXOn Mar. 8, 1887

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