JETTING DISPENSING SYSTEM INCLUDING FEED BY PROGRESSIVE CAVITY PUMP AND ASSOCIATED METHODS专利检索- 机械泵或泵送装置的控制监测或安全装置专利检索查询-专利查询网

JETTING DISPENSING SYSTEM INCLUDING FEED BY PROGRESSIVE CAVITY PUMP AND ASSOCIATED METHODS
申请号	US15743659	申请日	2016-08-02	公开(公告)号	US20180200749A1	公开(公告)日	2018-07-19
申请人	NORDSON CORPORATION;			发明人	Cutler CROWELL, III; Alan R. LEWIS;
摘要	A jetting dispensing system includes a dispenser body with a fluid chamber and a valve element, and a progressive cavity pump for feeding fluid into the fluid chamber. The progressive cavity pump propagates a plurality of separated cavities of fluid along an elongate length thereof to generate and maintain an incoming fluid pressure at a fluid inlet and the fluid chamber of the dispenser body. Accordingly, the droplets that are generated from operating the valve element in jetting dispensing cycles may define a volume of fluid, regardless of variations in fluid viscosity and variations in operational speed of the jetting dispensing system. Furthermore, the velocity profile of fluid exiting the dispenser body may be more constant to avoid causing changes in fluid velocity that can damage fluid particles and/or cause rotational tumbling or blossoming of the droplet while in flight towards the substrate.
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