Integral tube type sand prevention oil-well pump

The utility model discloses an integral tube type sand prevention oil-well pump which solves the problems of underground tripping of an oil-well pump, blocking of a plunger by sand and blocking of a valve ball resulting from the accumulated sand deposits and frequently collides an oil feeding valve cover of a common pump tube. An upper valve cover of a plunger of the utility model is axially and spirally distributed with three or four flower-basket-shaped oil outlet declined grooves, and the direction of the oil outlet declined groove forms an angle of from 30 DEG to 60 DEG with the radial line of the pump tube. The top of the oil feeding valve cover of the pump tube is axially and evenly distributed with from four to eight through small oil holes, and valve ball jump spaces communicated with the small oil holes are regular taper blind holes. Improving the structures of an oil discharging valve cover of the plunger and the oil feeding valve cover of the pump tube, an oil-well pump with small pump diameter is designed and manufactured with the principle of a Stream of Water Runs Forever to solve the problems of blocking and burying by sand caused by the shortage of underground liquid supply and intermittent exploitation. Thereby, the cost of well maintenance is reduced, and the utility model provides a new selection for deep-well exploitation.