1results about How to "Small flow pulsation" patented technology

The utility model relates to a kind of helical gear pump with multiple-tooth number asymmetric same modulus involute tooth profile, belong to helical gear pump technical field. Including back cover, positioning pin, floating sleeve, driving helical gear, driven helical gear, high-pressure sealing assembly, sealing ring, front cover, rotating lip skeleton oil seal, hole with clasp spring, bolt and pump body;Driving helical gear and driven helical gear are multiple-tooth number asymmetric same modulus involute tooth profile helical gear.The driving helical gear and driven helical gear in the utility model adopt multiple-tooth number asymmetric same modulus involute tooth profile, while increasing tooth thickness, leave out rotation space for addendum, ensure the strength and the stability of operation of gear, under the same addendum circle diameter, compared with standard helical gear, increase 4-6 tooth number, reduce flow pulsation, reduce noise.