Dispenser mixing module and method of assembling and using same

摘要

A mixing module that includes a mixing chamber formed of a cold flow material and placed within a housing which includes a compression device for compressing the cold flow material through which extends a reciprocating rod, preferably in the form of a valve rod relative to one or more chemical ports formed in the mixing chamber to mix or deliver chemicals within a mixing reception recess. The mixing chamber features a locking arrangement between the cold flow material mixing chamber and the housing which acts to prevent movement of the mixing chamber within the housing due to a sticking of the reciprocating rod to the mixing chamber which otherwise produces a position change in the mixing chamber as the compression device is temporarily compressed until the rod be comes unstuck and releases. The invention also includes an open front and rear end housing with releasable front and rear caps allowing easy insertion of the mixing chamber preferably having an annular front end rim as the locking member for receipt within a corresponding recess in the housing.

主权项

1. A fluid mixing module, comprising:
a housing; a mixing chamber formed of a cold flow material and having at least one fluid inlet port and a rod passageway; a rod received within said mixing chamber; and a compression device positioned within said housing and in a compressive relationship with said mixing chamber, wherein said mixing chamber and said housing have a male/female locking relationship that generates a movement-suppressing pressing-force between male and female members of the male/female locking relationship, at least during a valving rod retraction operation in the presence of a rod-stick relationship, that prevents a rearward movement of said mixing chamber relative to said housing during retraction of the rod from a more forward position in said mixing chamber to a more rearward position, said housing has open front and rear ends and said mixing module further comprises front and rear closure caps releasably secured to said housing, and the compressive relationship of said compression device with said mixing chamber biases said mixing chamber toward said front end.