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Free flow aerosol valve

a technology of aerosol valves and aerosols, which is applied in the direction of liquid dispensing, packaging, transportation and packaging, etc., can solve the problems of clogging the flow path, affecting product flow, and affecting the quality of product formulations, so as to reduce the agglomeration and product failure, reduce the back pressure (resistance), and minimize the drag of product flow

Inactive Publication Date: 2015-10-01
PRECISION VALVE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is an aerosol valve that allows for smooth delivery of high-solids product formulations without clogging. It includes a valve stem with large cross-section passageways that gently deflect the product flow, reducing back pressure. The valve stem and compression spring geometry create a shorter flow path with fewer changes in flow direction, minimizing agglomeration and product failure. Overall, this design ensures a more efficient and reliable delivery of high-solids products.

Problems solved by technology

Valve structures for product formulations that have a high solids content can fail due to agglomeration of the solids in the flow passages in the internal space of the valve stem housing.
Existing designs of such valves typically employ flow paths that have long, narrow channels, abrupt changes in flow direction, and areas of recirculation flow any of which can cause the solids in the product formulation to agglomerate and clog the flow paths.
However, the compressed coils act as a barrier to the product formulation that is passing upward, and so forces the product formulation to follow a flow path that is nearly entirely on the outside of the fully-compressed spring, since there is little or no space between the individual coils that allow the product formulation to flow in the space in the center of the spring.

Method used

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Examples

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Embodiment Construction

[0023]FIG. 1 is a conventional aerosol valve generally represented by reference numeral 10. Valve 10 is illustrated in FIG. 1 in full stroke, illustrating the long, tortuous flow path of the product formulation around the outside of the compression spring before the formulation is able to enter the center hole of the valve stem.

[0024]Aerosol valve 10 includes a dip tube 12, valve stem 16, valve stem housing 18, mounting cup 20, seal 22, and compression spring 32. Valve stem 16 is enclosed in valve stem housing 18. Valve stem 16 has a pair of apertures (not shown in FIG. 1) through which a pressurized high-solids product formulation passes in order to enter center hole 24 of valve stem 16. Mounting cup 20 orients and stabilizes aerosol valve 10 in its proper position on the product. Valve stem 16 contacts compression spring 32 at contact point 26.

[0025]Compression spring 32 exerts an upward pressure on valve stem housing 18, which is pressed against seal 22 that is located on the inn...

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PUM

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Abstract

An aerosol valve having a valve stem and compression spring geometry that create shorter flow paths, have fewer changes in flow direction, and passageways with large cross-sections to reduce resistance and back pressure is disclosed. The aerosol valve minimizes agglomeration of solids in the flow paths and reduces product failures. A method of using the aerosol valve is also provided.

Description

BACKGROUND OF THE DISCLOSURE[0001]1. Field of Disclosure[0002]The present disclosure is related to the field of aerosol delivery of high-solids product formulations. More particularly, the present disclosure relates to an aerosol valve having a valve stem and compression spring geometry that create shorter flow paths / fewer changes in flow direction to minimize agglomeration of solids in the flow paths and thereby reduce product failures.[0003]2. Description of Related Art[0004]Valve structures for product formulations that have a high solids content can fail due to agglomeration of the solids in the flow passages in the internal space of the valve stem housing. Existing designs of such valves typically employ flow paths that have long, narrow channels, abrupt changes in flow direction, and areas of recirculation flow any of which can cause the solids in the product formulation to agglomerate and clog the flow paths.[0005]As used in this application, agglomeration (or any of its form...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65D83/42
CPCB65D83/425B65D83/345B65D83/48B65D83/16
Inventor BRACE, GEOFFREYDOWNEY, MICHAEL PAULFORE, JOHN B.
Owner PRECISION VALVE CORP
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