Mixing device for viscous liquids

An improved mixer device for viscous liquids, comprising:

• (a) an elongated body including first and second body portions,
• (b) an axial opening extending through the entire length of the second body portion,
• (c) a diffuser in the axial opening, the diffuser including a plurality of intersecting passageways for forming a circuitous path for liquid flowing through the diffuser,
• (d) a shoulder formed near the downstream end of the opening for engaging the downstream end of the diffuser and holding it in place,
• (e) a chamber in the first body portion,
• (f) outlet means in the first body portion for admitting liquids to be mixed into the chamber,
• (g) a preliminary mixer in the chamber for mixing the liquids, the mixer having female threads on its downstream end being threadedly connected with the male threads on the outer surface of the upstream end of the first body portion, and
• (h) the second body portion having female threads on its downstream end being threadedly connected with male threads on the outer surface of the upstream end of the mixer, the downstream end of the mixer engaging the upstream end of the diffuser for holding the latter in place to permit the liquids to flow from the mixer into the diffuser, the downstream end of the diffuser being accessible through the downstream end of the axial opening and having a bearing surface so that after the second body portion and mixer are disconnected an axial force can be applied to the downstream end of the diffuser, if necessary, for removing the diffuser from the axial opening.