SU1629593A1

SU1629593A1 - Piston pump

Info

Publication number: SU1629593A1
Application number: SU894669080A
Authority: SU
Inventors: Игорь Евгеньевич Горолевич
Original assignee: И.Е. Горолевич
Priority date: 1989-03-30
Filing date: 1989-03-30
Publication date: 1991-02-23

Abstract

Изобретение относитс к насосострое- нию, в частности к поршневым насосам с кулачковым приводом поршней. Целью изобретени вл етс улучшение всасывающей способности насоса. Насос снабжен устройством дл принудительного ведени поршней на такте всасывани в виде закрепленных на торцах кулачка 6 двух Г-образных захватов 13, установленных с образованием Т-образного паза с внутренней профилированной рабочей 14 и заходной 15 поверхност ми , охватывающими опорные катки 5 с возможностью взаимодействи с их обоймами дл образовани дорожки качени на такте всасывани , дл чего рабоча поверхность 14 паза выполнена эквидистантно соответствующим участками профил кулачка 6. 1 з. п. ф-лы, 6 ил.The invention relates to pumping engineering, in particular to piston pumps with a cam-driven piston. The aim of the invention is to improve the suction capacity of the pump. The pump is equipped with a device for forcing the pistons at the suction stroke in the form of two L-shaped grippers 13 fixed at the ends of the cam 6, installed to form a T-shaped groove with an internal profiled working 14 and lead-in 15 surfaces encompassing the supporting rollers 5 their clips to form a raceway during the suction stroke, for which the working surface 14 of the groove is made equidistant with the corresponding sections of the cam profile 6. 1 h. item f-ly, 6 ill.

Description

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Claims

Claim

1. A piston pump comprising a housing, a valve-piston unit with a spring-loaded piston installed in the bore of the guide sleeve with the possibility of interaction with the support rollers with a drive cam having a profile with sections of constant radius of curvature to provide forced piston 5 stop at the lower and upper dead points its movement for the period of delay in closing the suction and discharge valves and profiled sections for the implementation of the suction and discharge strokes, characterized in that, with In order to improve the suction capacity of the pump, it is equipped with a device for forcing pistons on the suction stroke in the form of two L-shaped grippers fixed to the ends of the cam, which are installed with the formation of a T-shaped groove with an internal profiled working and lead-in surfaces covering the track rollers with the possibility of interaction 20 action with their clips for the formation of the raceway, and the working surface of the groove is made equidistant to the corresponding sections of the cam profile and has an angular extension with corresponding to the cam sections at the suction stroke and forced piston stand-up at bottom dead center, and the approach surface has a profile with a radius of curvature increasing along the axis of the working section with an angular extension corresponding to the cam profile section for forced piston stand-up at top dead center.

15 2. Pump pop. 1, characterized in that, in order to prevent rotation of the piston around its axis, the cam is equipped with a guide shoulder made on its working surface in the area between the supporting rollers of the piston.

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