PNEUMATIC DEWATERING PUMP Russian patent published in 2018 - IPC F04F1/06 

FIELD: engines and pumps.

SUBSTANCE: pump has a hollow body, a pressure branch pipe with a valve, a suction branch pipe with a valve, a corrugated hose and a filter, a cover with fixed pneumatic switch having a body with a chamber. The pump has a cylindrical float, a holder, a rod, a valve, a cover with a seat and a drain hole, a guide basket with a bottom for placing and moving the float. It also has an inlet branch pipe for compressed air supply, an ejector with nozzle, and a chamber. The ejector with pump body is communicated by a nipple joint and a pneumatic switch by a connecting tube. The inlet branch pipe for supplying compressed air to the ejector is provided with an adjusting device connected to the ejector by an adapter. The connecting tube that connects the ejector to the pneumatic switch is installed tangentially to the chamber of pneumatic switch body and configured with the Laval nozzle in the middle part. A flow stabiliser is installed in the pneumatic switch chamber and configured in the form of a vertical plate fixed in front of the connecting tube inlet into the chamber of the pneumatic switch body in the air flow direction inside the chamber.

EFFECT: duration of the total cycle for filling and emptying the body with water is reduced, pump capacity is increased.

3 cl, 3 dwg