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1. 发明申请

WO9950037A3 MODULAR FOAM DISPENSER 审中-公开
标题翻译：模块化泡沫分配器
公开(公告)号：WO9950037A3
公开(公告)日：2000-03-09
申请号：PCT/US9905476
申请日：1999-03-12
申请人： SEALED AIR CORP , LEE WILLIAM , CORRIGAN JOHN JOSEPH III , BETRAM GEORGE TEOFILIUS , FLEMING ROBERT N
发明人： LEE WILLIAM , CORRIGAN JOHN JOSEPH III , BETRAM GEORGE TEOFILIUS , FLEMING ROBERT N
IPC分类号： B65D81/113 , B05B7/04 , B29B7/76 , B29C44/00 , B29K105/04
CPC分类号： B05B7/0408 , B29B7/7663 , B29B7/7678 , B29B7/808 , B29K2105/04
摘要： A dispenser for mixing foam precursor chemicals and dispensing the foamable mixture includes a first module (28) containing shutoff valves (42, 44) and a second module (30) containing a dispensing valve assembly (54). The dispensing valve (54) assembly includes a valve body (82) of a self-lubricating material and a valving rod (56) which is reciprocatingly retracted in a valve passage (84) of the valve body (82) to uncover orifices (86, 88) which supply the precursor fluids into the valve passage (84), from which the mixed chemicals are dispensed. The dispensing valve (54) assembly includes a die spring (94) which urges a washer (90) to compress the valve body (82) along its axis to help prevent cold flow of the valve body away from the valving rod (56). The valving rod is scraped by inner surfaces of the hole (92) in the washer (90) through which the valving rod (56) is retracted and extended. The die spring (94) is preloaded and retained by a load cylinder (96) which is fixed in the bore (52) in the second housing (50) which contains the dispensing valve (54). An end portion of the load cylinder (96) extends from the bore (52) and carries a thrust ring (180) which engages grooves (184) in the first and second housings (32, 50) for preventing relative movement between the two modules (28, 30) along the axis of the bore (52). A cap (72) secured within the dispensing end of the bore (52) forms an annular solvent-receiving chamber (190) surrounding an end portion of the valving rod (56). The valving rod tip (186) is rounded and is exposed to the annular chamber (190) when the valving rod (56) is in a non-dispensing position, so that solvent flowing into the annular chamber (190) flows outwardly over the tip (186) to clean foam chemicals therefrom. The cap outer face (198) and rod tip (186) are coated with a release material such as TFE.
摘要翻译：用于混合泡沫前体化学品并分配可发泡混合物的分配器包括含有截留阀（42,44）的第一模块（28）和包含分配阀组件（54）的第二模块（30）。分配阀（54）组件包括自润滑材料的阀体（82）和阀杆（56），该阀门（56）往往缩回到阀体（82）的阀通道（84）中以露出孔口（86），88），其将前体流体供应到阀通道（84）中，从其分配混合的化学品。分配阀（54）组件包括模具弹簧（94），该模具弹簧（94）促使垫圈（90）沿其轴线压缩阀体（82），以帮助防止阀体冷静地流过阀杆（56）。阀杆被垫圈（90）中的孔（92）的内表面刮掉，阀杆（56）通过该孔被缩回和延伸。模具弹簧（94）由负载缸（96）预加载并保持，负载缸（96）固定在包含分配阀（54）的第二壳体（50）中的孔（52）中。负载缸（96）的端部从孔（52）延伸并且承载一个推力环（180），其接合在第一和第二壳体（32,50）中的凹槽（184），以防止两个模块之间的相对运动（28,30）沿着所述孔（52）的轴线。固定在孔（52）的分配端内的帽（72）形成围绕阀杆（56）的端部的环形溶剂容纳室（190）。当阀杆（56）处于非分配位置时，阀杆尖端（186）是圆形的并且暴露于环形室（190），使得流入环形室（190）的溶剂向外流过尖端（186）清洁泡沫化学品。帽外表面（198）和杆尖（186）涂覆有诸如TFE的剥离材料。

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