Constant flow pump and its manufacturing method

A technology of quantitative pump and flow direction, which can be used in injection devices, pumps, liquid distribution, etc., and can solve problems such as increased manufacturing costs
CN1690412AInactive Publication Date: 2005-11-02史蒂文・帕达尔
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
史蒂文・帕达尔
Publication Date
2005-11-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

A metering pump arrangement has a container with a changeable volume for accommodating a fluid. The arrangement has a pump that can be connected with the container in a sealed manner, which can be manually activated. The pump has an outlet opening that is connected with the surroundings. A bypass channel runs outside the pump and connects the container with the surroundings. The bypass channel can be sealed off by way of a closure element. In the metering pump arrangement, remains air left in the container when filling can be pumped by simply struture. The invention also relates to application of the metering pump arrangement and manufacture method thereof.
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Description

technical field

[0001] The invention relates to a metered pump device having a container with a variable volume for receiving a fluid and a manually operable pump sealably connectable to said container, said pump having a Exit holes for ambient communication. Furthermore, the invention relates to the use of such a metering pump arrangement and to a method for producing said metering pump arrangement. Background technique

[0002] A fluid dispensing device is known from DE 10049898 C2, with which, for example, liquid medicines or cosmetics can be dispensed quantitatively from a container. The metering pumps used for this work without air balance, wherein the liquid is accommodated in the container in an inner bag that is sealed from the surrounding environment and collapses when emptied.

[0003] Usually such an inner bag is filled with a liquid such as medicine or cosmetics such that residual air remains in the inner bag. This is undesirable for various reasons. Oxygen i...

Claims

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