Groundwater sampling device

Abstract

A groundwater sampling and pumping device and system for withdrawing groundwater from a well of small size, not exceeding 1.5 inches I.D. The device includes a hollow outer housing having water inlet ports formed through a bottom thereof and a hollow inner housing sized to be positioned integrally within the outer housing and defining a water flow passage therebetween. An electric motor in the inner housing is connected to a water impeller operably positioned to draw groundwater into the water passage. The water passing upwardly through the water flow passage provides cooling for the motor. Preferably the housing is formed of a polymer material, and / or a metal, such as stainless steel.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a non-provisional claiming domestic benefit of provisional application No. 60 / 992,248 filed Dec. 4, 2007 and provisional application No. 61 / 051,527 filed May 8, 2008, the entire disclosures of which are herein incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]This invention relates generally to systems and methods for gathering liquid samples using a submersible pump placed into a pre-established well for analysis and / or groundwater removal and groundwater remediation and circulation of fluids, and more particularly to a device and system for these purposes with includes a centrifugal pump which is sized to fit into a well of 1.5 inches, or less, such as a well having an inner diameter of one inch, or less, and capable of sending a water sample upwards of 30 feet for collection and / or analysis.[0004]2. Description of Related Art[0005]The taking of groundwater samples from a pre-e...

AI Technical Summary

Benefits of technology

[0020]This invention is directed to a groundwater sampling and pumping device and system for withdrawing groundwater from a well. The device includes a hollow outer housing having water inlet ports formed near a bottom thereof and an integral hollow conduit sized to be positioned as part of the outer housing and defining a water flow passage therethrough. An electric motor in the inner housing is connected to a water impeller operably positioned to draw groundwater into the water passage. The water passing upwardly through the integral hollow conduit can be carried directly to the surface through a flexible pipe or tube or into another stage of the pump for further increasing the pressure of the water.

[0021]It is therefore an object of this invention to provide a groundwater sampling device for withdrawing groundwater from a pre-established well of small ID which is readily insertable and removable from the well and can lift a sample a minimum of 30 feet.

[0022]It is still another object of this invention is to provide a high quality and high lifting capacity groundwater sampling device and system for withdrawing groundwater from a pre-established well of small ID and which includes an integral water passage for water flow around the motor for heightened cooling and increased motor longevity.

Problems solved by technology

Heretofore, only peristaltic pumps were capable of obtaining a sample from small wells but they were limited by lifting the sample not more than 25 feet.

Images