FIELD: machine building.
SUBSTANCE: invention relates to field of petroleum production and is provided for usage in learning technology of oil and gas wells. Valvate unit of pump contains chamber with located in it ball and saddle. Inner surface of chamber is outfitted by antiadhesion coating. Chamber is outfitted by package of fixed to its inner surface of centralisers. Shape and dimensions of centralisers are selected from condition of interaction of it with surface of ball and interception contacting of ball with inner surface of chamber. Unit is outfitted by splitter of medium flow. Splitter of flow is implemented in the form of solid body streamlined form, fixed on inlet into valve chamber coaxial to longitudinal axis of unit by means of package of streamline bearing.
EFFECT: reliability growth of valvate unit of pump and to durability of its operation.
2 cl, 1 dwg
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