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US 9,695,808 B2Granted
Positive displacement pump and operating method thereof
AssigneeMhwirth AS
InventorsAlfred Giessbach, Norbert Jaeger
Life of this patent
Estimating the term…
Abstract
A positive displacement pump includes a drive unit and a pump unit. The pump unit comprises a plurality of working chambers, a plurality of displacement elements, and at least three cylinders. The pump unit is configured to be double-acting.
Claims12
An operating method for a positive displacement pump provided as a piston diaphragm pump, the operating method comprising:
- providing a positive displacement pump configured to be double-acting, the positive displacement pump comprising:
- a drive unit, and
- a pump unit comprising:
- a plurality of working chambers,
- at least three cylinders which each comprise a piston,
- a plurality of displacement elements comprising diaphragms configured to be actuated by the pistons, the diaphragms each comprising a first side and a second side,
- a diaphragm chamber bounded by the second side, the diaphragm chamber being separated from a working volume containing the working liquid by the diaphragm, and
- a channel extending upward at an angle of from 1° to 80° from each of the at least three cylinders when viewed from a side view perpendicular to the at least three cylinders when arranged horizontally, the working volume being formed in part by the channel,
- providing a working liquid on the first side of each of the diaphragms;
- providing a diaphragm stroke via the working liquid;
- and
- conducting a medium to be pumped through the diaphragm chamber via the diaphragm stroke;
- wherein, the diaphragm stroke is provided at a diaphragm position different from a vertical position of the diaphragm.
10 more elements
A positive displacement pump designed as a piston diaphragm pump, the positive displacement pump comprising:
- a diaphragm arranged in a non-vertical position;
- a diaphragm chamber through which a medium to be pumped is conducted;
- a cylinder;
- a piston arranged in the cylinder and configured to perform an oscillating movement therein, the oscillating movement of the piston being transmittable to the diaphragm via a working fluid;
- and
- a channel extending upward at an angle of from 1° to 80° from the cylinder when viewed from a side view perpendicular to the cylinder when arranged horizontally,
- wherein,
- the diaphragm separates a working volume containing the working liquid from the diaphragm chamber,
- the working volume is formed in part by the channel.
6 more elements
Dependencies are inferred from the claim text.