Fluid sprinkling – spraying – and diffusing – Including supply holder for material – Moving solid surface engages material to be sprayed
Patent
1992-11-16
1995-08-08
Grant, William
Fluid sprinkling, spraying, and diffusing
Including supply holder for material
Moving solid surface engages material to be sprayed
239338, 239541, 239579, 2223211, 222378, B05B 1100
Patent
active
054391776
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a discharge head, such as is, e.g., used as an operating handle and/or discharge connection on manually operable discharge apparatuses for flowable media, such as liquid, pasty or similar media.
The discharge head can, as a closed subassembly, be subsequently fixed to the completed discharge apparatus having a valve tappet or a pump piston shaft, e.g., solely by means of a plug-in connection, in that a shaft end of the discharge head is fitted onto the valve tappet or pump piston shaft.
FR-A-2,178,658 discloses a discharge head, onto whose basic body is shaped a long shaft with a relatively large diameter inside cross-section and which is fitted onto the pump piston shaft. To reduce the internal dead volume in the shaft, use is made of a filter.
If the shaft is constructed in one piece with the basic body, then the same discharge head basic body can only be connected to a specific size of tappet. The situation is much the same if the pump piston forms an assembly unit with the discharge head.
FR-A-2,588,490 describes a foam discharge head for valves on pressure containers, in which the discharge head is mounted by means of a short, thick adaptor to the valve shaft.
SUMMARY OF THE INVENTION
The device according to the invention obviates the disadvantages of known contructions, and in particular provides a discharge head which, in the case of simple construction, can be adapted to different discharge apparatuses and optionally to different discharge openings.
According to the invention a separate shaft can be fixed by a plug-in connection particularly exclusively by press fit, to the discharge head. The shaft preferably forms with one end a connecting member for direct connection to the operating member of the discharge apparatus and/or with the other end forms a profiled shaft end, which is, e.g., used for guiding the medium flow in varying directions. Preferably, said shaft end is so inserted in a short, freely projecting inner sleeve of the discharge head, that most of the shaft length is located entirely in contact-free manner within the discharge head.
The shaft or the shaft end arranged in a fixed manner in the discharge head appropriately has longitudinally connected shaft portions of different external diameter and appropriately in the vicinity of the connecting member is provided the largest shaft width, and at the other end the smallest shaft width. In the manner of a sleeve or muff, the connecting member has a central plug opening for receiving the operating member of the discharge apparatus.
Substantially independently of this construction of the discharge head, it can also be advantageous if the shaft end associated with the discharge opening forms a reduced nozzle core with an end wall, axially adjacent to which the nozzle core is circumferentially traversed by at least one passage opening, which connects a portion of the outlet channel located entirely within the shaft to a portion located on the outer circumference of the shaft. The end wall, which can be connected in one piece in the manner of a U-shaped bridge via two legs to the remaining shaft, can have on its end face, e.g., for the formation of a twisting device, grooves, depressions, etc. and with said end face can engage on a substantially uninterrupted, inner face of the discharge head, which is traversed by a nozzle channel forming the discharge opening. Thus, solely through the use of another shaft, it is possible to modify the flow influencing of the medium prior to entering the nozzle channel.
The outlet channel portion located within the shaft appropriately has on the part of its length connected to the transverse channel or on its entire length cross-sections which diverge from the circular shape, which are e.g. approximately flat rectangular or radial in such a way that e.g. three flat groove cross-sections uniformly distributed about a central axis are connected to one another with their open longitudinal sides facing the central axis.
These and further features of pref
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Buhr Ernst
Graf Lothar
Pfeiffer Peter
Grant William
Ing. Erich Pfeiffer GmbH & Co. KG
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