PISTON HIGH-PRESSURE PUMP Russian patent published in 2018 - IPC F04B7/02 F04B37/16 

FIELD: motors and pumps.

SUBSTANCE: invention relates to pneumatic systems, in particular, to devices for generating high pressure of air or gas in a main pipe, and can be used for metrological purposes for supply of means of controlling and measuring pressure in high pressure mode. Pump includes housing 1, working chamber 2 formed by piston 3 of smaller diameter and cylinder 4, and a working chamber 5 formed by larger diameter piston 6 and cylinder 7 separated by valve assembly 8 with inlet valve 9 and outlet valve 10 associated with a gas supply system and a gas pressure consumption system. Pistons 3 and 6 are located at opposite ends of rod 11, longitudinal axial hole 12 is formed in valve assembly 8 for moving the rod. In neck of axial hole 12 there is sealing elastic ring 13. At end of rod 11 on side of piston 3 of smaller diameter there is bypass channel 14. Valve assembly 8 comprises additional overflow valve 15. In bypass channel 14 located in rod 11 there is adjusting device 16 comprising internal thread groove 17 in communication with bypass channel 14, in which screw 18 is located.

EFFECT: improved performance of the pump and increased reliability of its operation are provided.

5 cl, 6 dwg