| 摘要 |
The invention relates to plunger pumps, in which devices used as drives provide the plunger reciprocating motion. The invention is aimed at designing a high pressure pump with a plunger excluding appearance of cross forces, wherein for its longitudinal displacement an axial force could be only used produced by a drive's pusher when it contacts with the plunger at the moment when it has a sufficient value for its displacement. According to the invention the high pressure pump comprises a drive conveying a shaft rotation motion into the reciprocating motion of the pump plunger, the pump's drive is embodied as a dynamically balanced planetary drive having stationary and moving gears, a pin-pusher with a roller is mounted on one of them, the axis of which serves as a continuation of a gear pitch circle forming a cylinder and intended for periodic action on the pump plunger, the plunger is connected with one lever end made in the form of Π-shaped bend supported by a guide rest and connected by its other end with a stop member of the pin-pusher. |
