AUTOMATIC VALVE FOR OIL PUMPING WELLS

The utility model discloses a valve for oil pumping wells, which is an automatic valve used for an oil collecting pipe in a pumping well flowage structure. The automatic valve for oil pumping wells is composed of a rigid connection oil inlet and outlet end flanges, a sphere arranged in a valve body, a sphere seat, a spring and a spring seat. The utility model realizes the automatic regulation actions by that the sphere in the valves leaves or impacts to the sphere seat under the function of spring force according to the pressure change by passing though the oil inlet. The utility model has the advantages of simple structure, low cost and high safety. The utility model can be used for the oil pump well whether the oil mass is much or little and the return pressure of the oil collecting pipe is high or low; when the viscosity of crude oil is 40 DEG, the valve for oil pumping well can also be used in a production well within 1000 cm; the utility model can be detached and replaced conveniently, can be used in horizontal and vertical directions, which is an ideal valve in oil extraction engineering.