ADJUSTABLE EJECTOR (OPTIONS) Russian patent published in 2018 - IPC F04F5/50 

FIELD: machine building.

SUBSTANCE: ejector is designed for pumping various liquids or gases, as well as their mixtures. Ejector includes an active nozzle with a regulating needle installed with the possibility of axial movement, a mixing chamber, a diffuser made of an elastic material, a nozzle for supplying an active medium. Ejector is equipped with a mechanism that regulates the distance from the nozzle to the initial section of the diffuser, which is a bracket rigidly mounted on the mixing chamber and the sleeve and mounted in the guides with the ability to move in the axial direction, as well as a mechanism regulating the size of the input cross-section of the diffuser. According to the second variant, the ejector includes an active nozzle with an adjusting needle mounted for axial movement, a mixing chamber, a diffuser made of an elastic material. Diffuser is closed by a casing with the formation of a cavity outside the entrance section of the diffuser. Ejector is equipped with a mechanism that regulates the distance from the nozzle to the initial section of the diffuser, which is a bracket rigidly mounted on the mixing chamber and the housing and mounted in the guides with the ability to move in the axial direction. Mechanism regulating the size of the inlet cross section of the diffuser is made in the form of an elastic chamber installed in the cavity formed by the diffuser and housing, with the possibility of pumping gas/liquid into it and the possibility of pressure of the camera on the diffuser outside the inlet section of the latter.

EFFECT: invention is aimed at expanding the parameters of the regulation of the ejector.

7 cl, 4 dwg