Sand Proof Pump with a Long Plunger

The pump has a structure of short barrel and long plunger, and sand deposits in the lower barrel and oil inflow from side direction. The plunger is longer than the barrel with a structure of circular passage and could always keep in sealed status with the barrel, so the sank sand will sink into the tail pipe under the pump through the circular passage instead of entering the fit clearance between the plunger and barrel when pumping or not, which will effectively avoid the sand wedging and sand depositing and relieve the abrasion of barrel and plunger. The pump owns the advantages of sand-wedging and sand-depositing preventing, wear-resisting, corrosion resisting and long service life etc. It is suitable for sandy wells or serious mineral wells.

Main specifications and parameters