Double diaphragm pump
OwnerDirk Buddeinventor
Life of this patent
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Abstract
A double diaphragm pump having diaphragms connected by a coupling rod and separating two diaphragm chambers, a control spool displaceable in dependence on the position of the diaphragms, with closure means for alternate freeing and closing control passages arranged in a control spool housing for alternate pressurizing and relieving of a driving medium chamber with driving medium, and an actuating member coupled with the diaphragm movement and magnetically with the control spool.
Claims20
A double diaphragm pump, comprising two spaced diaphragms separating two diaphragm chambers and displaceable between respective end positions;
- a coupling rod for connecting said two diaphragms;
- a control spool for controlling flow of a medium to and from said double diaphragm pump;
- and an actuating member magnetically coupled with said control spool for switching a position of said control spool at a respective end position of a respective diaphragm to reverse a displacement direction of said diaphragms.
A double diaphragm pump, comprising two spaced diaphragms separating two diaphragm chambers and displaceable between respective end positions;
- a coupling rod for connecting said two diaphragms;
- and a control spool for controlling flow of a medium to and from said double diaphragm pump;
- said two diaphragms being magnetically coupled with said control spool for switching a position of said control spool at a respective end position of a respective diaphragm to reverse a displacement direction of said diaphragms.
Dependencies are inferred from the claim text.