Water pump

Abstract

A water pump for delivering water from a well to the surface has a housing with a reciprocable plunger disposed therein. The housing is preferably comprised of PVC and tubulars which are connected to make up the plunger assembly are likewise PVC. A proximity bushing is disposed in the housing and the plunger assembly reciprocates in the housing through the proximity bushing. Reciprocation of the plunger assembly draws water into the housing and forces water from the housing into the plunger assembly to the surface.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application incorporates by reference and claims the benefit of U.S. Provisional Application 61 / 146,225 filed on Jan. 21, 2009.BACKGROUND OF THE INVENTION[0002]The current disclosure is directed to a water pump that provides affordable access to safe water. In underdeveloped and developing nations, one consistent need is the need for access to safe water. Traditional hand pumps are often expensive to construct and made up of steel components that make transport, shipping and construction costly. In addition, such traditional pumps often fail. Some statistical reports indicate that forty percent of all hand pumps fail and are abandoned within two years of installation. This number is reported to rise to ninety percent in three years. The failure of hand-operated pumps is due to a variety of causes. A large number of inoperative hand pumps result from damaged or failed O-rings that are utilized in traditional pumps. In order to replace ...

AI Technical Summary

Benefits of technology

[0003]The current disclosure is directed to a water pump that utilizes commonly available materials, requires no electrical means to fabricate or actuate and will operate longer than prior art hand-operated pumps, since traditional wear components are not used. The pump is compact and will enable water recovery from a broad range of existing well casings. The pump will benefit developing and impoverished nations by providing affordable access to safe water. The water pump will operate for more cycles than traditional water pumps that utilize O-rings and steel risers. Components of the pump of the current disclosure are constructed with PVC and no steel risers are utilized. Construction of the water pump of the current disclosure is simpler, faster and requires less equipment than traditional pumps since PVC is lighter and easier to work with than steel risers.

[0004]The water pump of the current disclosure may be positioned in a cased, or uncased well. The water pump has an outer housing with a reciprocating plunger assembly disposed therein. A proximity bushing is affixed in the housing through which the plunger assembly reciprocates. A first check valve is attached to the bottom or first end of the housing and will allow water to be drawn therethrough into the housing, but will prevent the expulsion of water from the housing through the first check valve. A second check valve is attached to a first, or lower end of the plunger assembly and is positioned inside the housing. The second check valve at the lower end of the plunger assembly will allow water in the housing to pass therethrough into the plunger assembly but will prevent water from passing from the plunger assembly through the second check valve into the housing.

Problems solved by technology

Traditional hand pumps are often expensive to construct and made up of steel components that make transport, shipping and construction costly.

In addition, such traditional pumps often fail.

Some statistical reports indicate that forty percent of all hand pumps fail and are abandoned within two years of installation.

The failure of hand-operated pumps is due to a variety of causes.

A large number of inoperative hand pumps result from damaged or failed O-rings that are utilized in traditional pumps.

Local communities in impoverished areas are often unsuccessful in their attempts at pump repair because of either the lack of the parts or the inability to pull the pump unit with steel risers from the well.

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