Intermittently operating pneumatic device for pumping solid-carr

Details Intermittently operating pneumatic device for pumping solid-carr Intermittently operating pneumatic device for pumping solid-carr

1985-11-13

1987-08-04

Nase, Jeffrey V.

Conveyors: fluid current

Slug conveying

406 93, 417137, B65G 5330

Patent

active

046842950

ABSTRACT:
The pneumatic device for pumping a solid-carrying liquid or slurry, which operates intermittently and is continuously under load, comprises a tubular body (1) in which a flap valve (12) is mounted so that it pivots in the downstream direction on a support (8) and cooperates with a seat to close a passage port (11) at the entry of a pumping chamber (17), between the seat and the delivery port (16). A pipe (18) which allows compressed air to enter opens into the pumping chamber (17). The valve (12) is opened under the pressure of the solid-carrying liquid or slurry to be conveyed, when compressed air is not allowed to enter the chamber (17). The entry of air causes the valve (12) to close and the chamber (17) to empty. A valve (20) which is operated by a timing device (23) controls the filling and emptying sequences. The device is useful for pumping dense slurries and solid-carrying liquids.

REFERENCES:
patent: 2141920 (1938-12-01), Lenhart
patent: 2299470 (1942-10-01), Davis
patent: 4009912 (1977-03-01), Mraz
patent: 4079746 (1978-03-01), Killian
patent: 4521165 (1985-06-01), Handleman

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