ROTARY VALVE AND QUICK EXHAUST VALVE FOR RAILWAY VEHICLE
1 Assignment
0 Petitions
Accused Products
Abstract
A rotary valve and a quick exhaust valve for a railway vehicle in which high sealability and operability at the time of valve opening and closing are ensured. Outflow/inflow ports (10, 11) and a discharge port (12) are formed in a valve body accommodating part having a spherical surface part or a tapered surface part formed on part of an inner periphery in a body (2), and a valve body (3) is rotatably inserted from an opening which is open from the valve body accommodating part. A spherically-shaped surface part or a tapered-shaped surface part is formed at a position opposing the spherical surface part or the tapered surface part, a plurality of through ports communicating the outflow/inflow ports or the discharge port and an attachment groove opposing the outflow/inflow ports in a direction crossing the through ports are formed, and a seal member is attached to the attachment groove.
33 Citations
17 Claims
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1-6. -6. (canceled)
- 7. A rotary valve in which outflow/inflow ports and a discharge port are formed in a valve body accommodating part having a spherical surface part or a tapered surface part formed on part of an inner periphery in a body, a valve body is rotatably inserted from an opening which is open from the valve body accommodating part, a spherically-shaped surface part or a tapered-shaped surface part is formed on an outer periphery of this valve body at a position opposing the spherical surface part or the tapered surface part, a plurality of through ports communicating the outflow/inflow ports or the discharge port and an attachment groove opposing the outflow/inflow ports in a direction crossing these through ports are further formed, a seal member for closing the outflow/inflow ports or the discharge port is attached to this attachment groove, any one of the outflow/inflow ports or the discharge port is hermetically sealed and closed by the seal member when the opening is covered with a lid member, the outflow/inflow ports and the discharge port or the outflow/inflow ports are provided so as to be able to communicate mutually via the through ports, also a retaining ring is interposed between a lower inner circumferential surface, which is the opening of the valve body accommodating part, and a lower outer circumferential surface of the valve body, and this retaining ring is attached between the valve body and the lid member.
Specification