Pump head for a metering device, metering device and also possibilities for use
AssigneeF. Holzer GmbH
InventorsHyeck-Hee Lee, Ute Steinfeld, Markus Mahler, Frank Holzer
Life of this patent
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Abstract
The present invention relates to a pump head for a metering device for a metered dispensing of a fluid. The pump head can thereby be fitted on a storage container, for example a bottle, which is designed for storing the fluid to be dispensed. Pump head and storage vessel together thereby form the metering device according to the invention. The pump head is distinguished by including a passage for air, by means of which air from outside can be transferred into the storage vessel during the pumping process for pressure compensation. The present invention relates in addition to purposes of use for the pump head and the metering device.
Claims21
A pump head for a metering device for a metered dispensing of a fluid, the pump head comprising:
- a pump housing which has a pressure chamber,
- an inlet valve which delimits the pressure chamber,
- a cone which is arranged moveably in the pressure chamber of the pump housing and comprises a through-channel, the cone being dimensioned in a part orientated towards the inlet valve such that it is capable of being guided in a form-fit in the pressure chamber and being dimensioned smaller in cross-section in the remaining parts,
- an outlet valve via which the dispensing of the fluid is effected, the outlet valve being in fluidic communication with the through-channel of the cone, and also
- a component which narrows the diameter of the pressure chamber in a part situated opposite the inlet valve and which is configured for guiding the cone, wherein
- the pump head has at least one air inlet for guidance of air, the air inlet comprising a passage for air between cone and component and also at least one through-opening for air in the pump housing, which are opened when the cone is transferred into an outlet position in which the pump head dispenses fluid.
The pump head according to 9, wherein, in the closed position of the pump head, the closing body is retained by a return spring (10) in a position which closes the through-channel of the cone.
Dependencies are inferred from the claim text.