最近,国家专利局已批准了由福建省福安市远东电机厂提出的发明创造名称为“一种无需设置单向阀的自吸旋涡泵”的专利,专利号为:93 2 45306.6。 在目前常用的自吸泵中均设置有橡胶板单向阀,以防止泵停机时,泵腔内的水泄漏,妨碍自吸。但这些泵常因阀板的橡胶老化、变形、划破、或者阀座锈蚀、粘垢等问题,当泵停机时,泵腔的水就泄漏,致使泵无法进行气水分离和自吸,有的自吸泵甚至生产 Recently, the State Patent Office has approved the patent made by Far East Motor Factory of Fu’an City, Fujian Province, entitled “A self-priming vortex pump without the need of one-way valve”, the patent number is 93 2 45306.6. At present, commonly used self-priming pumps are provided with rubber plate check valve to prevent water pump cavity leakage, prevent self-absorption. However, these pumps often due to the valve plate rubber aging, deformation, scratched, or valve seat rust, dirt and other issues, when the pump down, the pump cavity of the water leak, resulting in pump gas and water separation and self-absorption, there is Self-priming pumps even produce