ROTATION-TYPE FLOW PATH SWITCHING VALVE

摘要

The invention discloses a rotation-type flow path switching valve, which includes a driving component (100) and a valve body component (200) connected with a driving shaft (300) of the driving component (100). The valve body component (200) includes a valve body (210) provided with a first group of flow path channels and a second group of flow path channels, and a spool (220) which switches the first group of flow path channels and the second group of flow path channels by rotating. The valve body component (200) further includes: a driving disc (250) which is driven by the driving shaft (300) to rotate, and a driven disc (260) which is connected, by means of a first gap linkage mechanism, with the driving disc (250) to transfer an axial movement within a preset swivel stroke of the driving disc (250). The driving shaft (300) and the spool (220) are connected by means of a second gap linkage mechanism to transfer the axial movement to the spool (220) within a preset swivel stroke of the driving shaft (300). The valve body component (200) further includes a spring (240) which makes the spool (220) abut against the valve body (210). The switching valve avoids the problem of being easy to wear and stuck in reversing after a long-time movement under force, and has high reliability.