Three-way valve and exhaust gas purifier using the same

Details Three-way valve and exhaust gas purifier using the same Three-way valve and exhaust gas purifier using the same

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 11/052 (2006.01) F01N 13/08 (2010.01) F01N 3/02 (2006.01) F01N 3/027 (2006.01) F01N 3/031 (2006.01) F01N 3/032 (2006.01) F01N 3/20 (2006.01) F01N 13/04 (2010.01)

Patent

CA 2219015

A three-way valve for changing over the direction of flow of high-temperature gas which can completely close flow paths and which is durable enough to prevent increase in leakage of gas even if the gas is engine exhaust. A valve mechanism provided in a valve chest includes an arm pivotable about a pivot shaft, a support rod mounted on a valve pressing portion of the arm, and two valve bodies supported on the support rod on both sides of the arm so as to be pivotable. The valve bodies have flat sealing surfaces adapted to be brought into surface-to-surface contact with flat valve seats formed at the inlets of bifurcated paths.

Robinet à trois voies servant à changer le sens d'écoulement d'un gaz à haute température. Le robinet peut fermer complètement les circuits d'écoulement et est suffisamment résistant pour prévenir une augmentation des fuites de gaz même s'il s'agit de gaz d'échappement de moteurs. Le mécanisme de robinet monté dans la boîte de robinet comprend un bras pivotant fixé sur un arbre de pivot, une tige de support montée sur la partie du bras exerçant une pression sur le robinet, et deux corps de robinet prenant appui sur la tige de support, des deux côtés du bras de façon à pouvoir pivoter. Les corps de robinet ont des surfaces d'étanchéité planes adaptées de façon à pouvoir entrer en contact surface-surface avec les sièges de clapet plat à l'entrée des passages bifurqués.

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