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Aspirator Pump for Fluids

IP.com Disclosure Number: IPCOM000091405D
Original Publication Date: 1968-Jan-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Best, AH: AUTHOR [+2]

Abstract

This aspirator-pump provides up to twenty inches of vacuum for pumping or discharging fluids. The pump can be constructed of any suitable material, including stainless steel, polypropylene, and polyvinyl chloride, for pumping a variety of liquids, such as hydrochloric acid, solvents and the like. There is appropriate selection and correlation of the material for the construction of the pump. In general, the pump is characterized by a vacuum inlet which is positioned downstream from a Venturi constriction. A diffuser, having a cylindrical configuration concentrically positioned in the outlet portion of the pump, is used.

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Aspirator Pump for Fluids

This aspirator-pump provides up to twenty inches of vacuum for pumping or discharging fluids. The pump can be constructed of any suitable material, including stainless steel, polypropylene, and polyvinyl chloride, for pumping a variety of liquids, such as hydrochloric acid, solvents and the like. There is appropriate selection and correlation of the material for the construction of the pump. In general, the pump is characterized by a vacuum inlet which is positioned downstream from a Venturi constriction. A diffuser, having a cylindrical configuration concentrically positioned in the outlet portion of the pump, is used.

The pump comprises hollow cylindrical body 1, the inside surface of which defines a longitudinal passage or bore 2 having a Venturi constriction 3 disposed intermediate the open ends of the main body. Suitably mounted in axial recess 4 in body 1 is inlet nipple 5 communicating with bore 2. Similarly mounted in axial recess 6 at the other end of body 1 is outlet nipple 7 provided with longitudinal passage 8 communicating with bore 2.

Nipple 7 is provided at its free end with slot 9 in which is mounted diffuser support plate 10. The latter in turn is mounted within a kerf or slot 11 of cylindrical diffuser 12 for support and positioning of it concentrically within outlet passage 18 of nipple 7. Extending laterally on bore 2 and downstream from the Venturi constriction is radial passage 13. This communicates with axial passa...