Method and apparatus for a molded tube and peristaltic pump
a technology of peristaltic pump and molded tube, which is applied in the direction of pump control, positive displacement liquid engine, machine/engine, etc., can solve the problems of inaccurate mixture ratio, inability to calibrate systems to overcome, and inability to achieve reproducible and precise flow rates that are often required. achieve the effect of improving flow rates and achieving precise and repeatable flow rates
Inactive Publication Date: 2006-07-13
LANCER PARTNERSHIP
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- Abstract
- Description
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AI Technical Summary
Benefits of technology
The solution provides more precise and repeatable flow rates, reduces flow restrictions, and enhances the reliability of peristaltic pumping systems, ensuring consistent quality in fluid delivery across different applications.
Problems solved by technology
In other applications, one tube may be used with the same pump for a relatively long time.
Although peristaltic pumps offer certain advantages, they do not economically allow for the kind of reproducible and precise flow rates that are often required.
In many instances, the inaccuracies result from the tubes, which are made with an extrusion process.
It is generally not practical to calibrate systems to overcome the variations.
Thus, for example, where a beverage concentrate is to be pumped at a specific flow rate for mixture with water at a given ratio, tube variations result in inaccurate mixture ratios—and hence different quality drinks—from tube to tube.
Such beverage systems are often used in restaurants and convenience stores (among other locations), and the variations create unacceptable differences in drink quality from batch to batch in the same location, and from location to location.
Similar issues are found in other applications, such as those in the pharmaceutical field.
Another problem with prior art peristaltic pumps is that the pump inlet side of the tube is often attached to a tube fitment that operates as a restriction to free flow to the inlet to the pump.
Method used
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[0024] As shown in FIG. 1, a peristaltic pump 10 is shown in block form, which includes a motor 12, a shaft 14, and head (or heads) 16. Head or heads 16 engage a molded tube 18.
[0025] The head or heads 16 squeeze the tube 18 (against a back or opposing head or heads) and push fluid in the desired direction. In the particular example illustrated in FIG. 1, the fluid comes from a supply 20, which may be a bag of fluid, such as a plastic bag used in a bag-in-box beverage system, or a pharmaceutical bag, used for pharmaceuticals or other fluids. The supply 20 generally includes a supply fitment 22 that is coupled to a tube fitment 24 through any of several known approaches. The tube fitment 24 may be coupled to the tube 18 through any of several known approaches, or as described below as part of the molding process. Downstream of the pump 10, the tube 18 is coupled to dispenser 26. Dispenser 26 may be, for example and without limitation, a beverage dispenser or a needle for an injectio...
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A peristaltic pump (10) and tube (18) system are provided. The peristaltic pump (10) operates to squeeze the tube (18) and push liquid in the tube (18) in the desired direction. The tube (18) is molded, and thus allows for predictable and consistent flow rates.
Description
CONTINUING APPLICATION INFORMATION [0001] This application is a continuation of and claims priority from co-pending U.S. patent application Ser. No. 10 / 759,503, filed Jan. 16, 2004, entitled Method and Apparatus for a Molded Tube and Peristaltic Pump.TECHNICAL FIELD OF THE INVENTION [0002] This invention relates generally to pumping systems, and more particularly to peristaltic pumping systems. BACKGROUND OF THE INVENTION [0003] Peristaltic pumps are widely used in various applications, including applications in the beverage and pharmaceutical fields, among other fields. Peristaltic pumps generally operate by compressing a flexible tube or channel with one or more heads (or other mechanisms). The head or heads pinch off a portion of the tube or channel (against either a back or an opposing head) and push fluid in the desired direction. [0004] In some applications, a peristaltic pump itself is used over and over again and the tube is frequently replaced, such as when a beverage conce...
Claims
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IPC IPC(8): F04B49/06F04B43/09
CPCF04B43/09
Inventor SCHROEDER, ALFRED A.ROMANYSZYN, MICHAEL T.
Owner LANCER PARTNERSHIP