GAS MIXING PUMP WITH VARIABLE INJECTION SECTION

The invention relates to a pump including: a gas mixing housing (1); ducts (2, 3) for supplying the housing (1) with HP and IP gases and giving into the mixing housing (1); an outlet duct (3) for the mixed gases; a pneumatic actuator (10) provided in the HP-gas supply duct (2) including a mobile pis...

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Bibliographic Details
Main Authors FAUQUE STEPHANE, STEPHAN CHRISTINE
Format Patent
LanguageEnglish
Published 08.07.2010
Subjects
BLASTING
CONTROLLING
HEATING
LIGHTING
MECHANICAL ENGINEERING
PHYSICS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
REGULATING
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
WEAPONS
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Summary:The invention relates to a pump including: a gas mixing housing (1); ducts (2, 3) for supplying the housing (1) with HP and IP gases and giving into the mixing housing (1); an outlet duct (3) for the mixed gases; a pneumatic actuator (10) provided in the HP-gas supply duct (2) including a mobile piston connected to a stopper (12) whose position in the duct (2) determines a passage section of the HP gas towards the mixing housing (1); a control chamber (13) of the mobile piston adapted to be fed under pressure for determining the position of the mobile piston; a pneumatic circuit provided between a pressure source and the control chamber (13); characterised in that the pneumatic circuit includes at least one leak valve (22) adapted for generating a leak in the pneumatic circuit for modifying the pressure supplied to the control chamber (13).
Bibliography:Application Number: US20080601626