PRE-FILTER FOR BIODIESEL FUEL Russian patent published in 2017 - IPC F02M37/22 F23K5/18 B01D29/56 

FIELD: power industry.

SUBSTANCE: pre-filter for biodiesel fuel contains a housing with inlet and outlet channels, the inlet cavity, formed by coaxially and equidistantly located outer and inner walls, in which a separator-swirler, a sediment bowl with drain cock and sludge level sensor, filter element and a flows spreader is located. Separator-swirler is located at the outlet of the inlet chamber and it is designed as a disk-shaped part, at which along the outer edge the inclined blades in the tangential direction with L-shaped cross section are made. The L-shaped cross section free shelf of each blade is directed towards the outer wall of the inlet chamber. The free shelf blades tilt is made at the angle from18° to 22° to the transverse plane of the inlet cavity section, the flow spreader is in the form of the truncated cone with the radial ribs, the larger base of which is directed to the filter element, and the ribs are located along the longitudinal section plane from the sediment bowl side, the sediment bowl is made cylindrical at the top and conical at the bottom, at that the sludge level sensor upper point is located in the interface plane of cylindrical and conical parts of the sediment bowl.

EFFECT: reliability and efficiency increase of the pre-filter for biodiesel fuel, that is, the separation of solid and liquid foreign particless in a wide range of bio-diesel fuel consumtions.

2 dwg