Valves and valve actuation – Tube compressors – Perpendicularly reciprocating tube contacting element
Patent
1998-04-27
2000-06-27
Fox, John
Valves and valve actuation
Tube compressors
Perpendicularly reciprocating tube contacting element
251 4, F16K 704
Patent
active
06079691&
ABSTRACT:
The improved pinch valve assembly (10) functions to control the flow of fluids on a fluid system. The improved pinch valve assembly (10) controls plurality of fluid containing tubing (16). When the solenoid coil (22) is energized the plunger (28), which is securely attached to the shaft (31) which has a first pin (18A) and a second pin (18B) securely attached perpendicular to the longitudinal axis of the shaft (31), moves forward. The forward motion of the shaft (31) causes the first pin (18A) to decompress the first tubing (16A) and the third tubing (16C) permitting fluid to flow therethrough. The forward motion of the shaft (31) further causes the second pin (18B) to also move forward compressing the second tubing (16B) and the fourth tubing (16D) stopping fluid flow. The forward motion of the shaft (31) still further causes the third pin (18C) to compress the helical spring (13). When the solenoid coil (22) is de-energized the plunger (28), which is securely attached to the shaft (31) which has the first pin (18A) and the second pin (18B) securely attached perpendicular to the longitudinal axis of the shaft (31), moves aft. The aftward motion of the shaft (31) causes the first pin (18A) to compress the first tubing (16A) and the third tubing (16C) stopping fluid to flow therethrough. The aft motion of the shaft (31) further causes the second pin (18B) to also move aft releasing the second tubing (16B) and the fourth tubing (16D) permitting fluid flow. The aftward motion of the shaft (31) still further causes the third pin (18C) to decompress the helical spring (13). The helical spring (13) is biased in its released state to have sufficient force to compress the compress the first tubing (16A) and the third tubing (16C).
REFERENCES:
patent: 3823724 (1974-07-01), Davis
patent: 4230151 (1980-10-01), Jonsson
patent: 5190071 (1993-03-01), Sule
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