Multiple stage pinch valve and filling apparatus using a multiple stage pinch valve
AssigneeFesto AG & Co.
InventorMajid Javaheri
Life of this patent
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Abstract
A multiple stage pinch valve generally includes a pinch valve body, a manifold top head connected to a proximal end of the pinch valve body and a nozzle head connected to a distal end of the pinch valve body. In one embodiment, the pinch valve body includes a first pinch valve section and a second pinch valve section disposed downstream of the first pinch valve section. In another embodiment, the pinch valve body includes an inner pinch valve section and an outer pinch valve section disposed coaxially around the inner pinch valve section.
Claims15
A multiple stage pinch valve comprising a pinch valve body, a manifold top head connected to a proximal end of said pinch valve body and a nozzle head connected to a distal end of said pinch valve body, said pinch valve body comprising:
- a first pinch valve section having a proximal end connected to said manifold top head and a distal end opposite said proximal end, said first pinch valve section including a tubular first valve element and a rigid flow tube supported within said first valve element, said rigid flow tube defining an inner fluid flow path and said first valve element and said rigid flow tube defining an outer fluid flow path therebetween, wherein said first valve element is deformable to radially seal around an outer surface of said rigid flow tube thereby closing said outer fluid flow path;
- and
- a second pinch valve section having a proximal end connected to said distal end of said first pinch valve section and a distal end, opposite said proximal end, connected to said nozzle head, said second pinch valve section including a tubular second valve element, said second valve element defining a fluid flow channel therein, said fluid flow channel communicating with said inner fluid flow path and said outer fluid flow path of said first pinch valve section, wherein said second valve element is radially deformable to close said fluid flow channel,
- wherein said rigid flow tube is supported at a proximal end thereof within said manifold top head, and
- wherein said manifold top head comprises a fluid inlet port and an interior fluid chamber communicating with said fluid inlet port, and wherein said rigid flow tube comprises at least one radial aperture formed through its circumferential wall adjacent said proximal end for providing fluid communication between said manifold top head fluid chamber and said inner fluid flow path within said rigid flow tube.
A multiple stage pinch valve comprising a pinch valve body, a manifold top head connected to a proximal end of said pinch valve body and a nozzle head connected to a distal end of said pinch valve body, said pinch valve body comprising:
- an inner pinch valve section having a proximal end connected to said manifold top head and a distal end opposite said proximal end, said inner pinch valve section including a housing, a tubular inner valve element supported coaxially within said housing, and a rigid flow tube supported coaxially within said inner valve element, said rigid flow tube defining an inner fluid flow path and said inner valve element and said rigid flow tube defining a middle fluid flow path therebetween, wherein said inner valve element is deformable to radially seal around an outer surface of said rigid flow tube, thereby closing said middle fluid flow path;
- and
- an outer pinch valve section disposed coaxially around said inner pinch valve section, said outer pinch valve section having a proximal end connected to said manifold top head and a distal end opposite said proximal end, said outer pinch valve section including a tubular outer valve element defining an outer fluid flow path between an inner surface of said outer valve element and an outer surface of said inner pinch valve section housing, wherein said outer valve element is deformable to radially seal around the outer surface of said inner pinch valve section housing, thereby closing said outer fluid flow path,
- wherein said rigid flow tube is supported at a proximal end thereof within said manifold top head, and
- wherein said manifold top head comprises a fluid inlet port and an interior fluid chamber communicating with said fluid inlet port, and wherein said rigid flow tube comprises at least one radial aperture formed through its circumferential wall adjacent said proximal end for providing fluid communication between said manifold top head fluid chamber and said inner fluid flow path within said rigid flow tube.
Dependencies are inferred from the claim text.