The embodiment of the invention provides a piston valve and a vehicle. The piston valve comprises a cylinder body, and a fluid inlet and a fluid outlet are formed in the annular side wall of the cylinder body. The piston can move in the axial direction in the cylinder body; the reversing mechanism is arranged at the gap between the cylinder body and the piston in the circumferential direction of the piston, located between the fluid inlet and the fluid outlet in the axial direction and communicated with the fluid outlet, when the piston moves in the axial direction, the reversing mechanism is switched between a one-way conduction state and a two-way conduction state, and the reversing mechanism can seal the gap in the one-way conduction state and seal the gap in the two-way conduction state in the one-way conduction state. Fluid is prevented from flowing from the fluid inlet to the fluid outlet and can flow back to the fluid inlet from the fluid outlet; and in the bidirectional conduction state, the reversing mechanism can enable the fluid to flow between the fluid inlet and the fluid outlet in a bidirectional manner. The one-way valve is integrated on the piston valve, it is guaranteed that high-pressure fluid at the fluid outlet can flow back to the fluid inlet when the pressure of the fluid inlet is reduced, the number of parts is small, the leakage risk is reduced, reliability is improved, and cost is reduced.
本申请实施例提供一种活塞阀和车辆。活塞阀包括缸体,其环形侧壁上设有流体入口和出口;活塞,在缸体内能沿轴向方向移动;换向机构,围绕活塞的周向方向设于缸体和活塞的间隙处,沿轴向方向位于流体入口和出口之间且与流体出口连通,活塞沿轴向方向移动时,换向机构在单向和双向导通状态之间切换,单向导通状态,换向机构能单向密封间隙,阻止流体从流体入口流至流体出口,并能使流体从流体出口回流至流体入口;双向导通状态,换向机构能使流体在流体入口和流体出口之间双向流动。本申请实施例实现在活塞阀上集成单向阀的功能,保证流体入口压力降低时流体出口的高压流体能回流至流体入口,零件数量少,降低泄露风险,提高可靠性,且成本减少。
Piston valve and vehicle
一种活塞阀和车辆
2022-04-12
Patent
Electronic Resource
Chinese
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