- 专利标题: Flow control device with drain check
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申请号: US17145037申请日: 2021-01-08
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公开(公告)号: US11511290B2公开(公告)日: 2022-11-29
- 发明人: Riley D. Greenwood
- 申请人: Nelson Irrigation Corporation
- 申请人地址: US WA Walla Walla
- 专利权人: Nelson Irrigation Corporation
- 当前专利权人: Nelson Irrigation Corporation
- 当前专利权人地址: US WA Walla Walla
- 代理机构: Nixon & Vanderhye P.C.
- 主分类号: B05B1/30
- IPC分类号: B05B1/30 ; B05B12/08 ; G05D16/02 ; G05D16/06 ; A01G25/16 ; F16K15/08
摘要:
A flow control device including: a housing including a flow passage extending from an inlet, through the housing to an outlet; a hollow tube within the housing defining a tube passage included in the flow passage of the housing; a valve seat in the housing and disposed between the inlet to the flow passage and an inlet to the tube passage of the hollow tube; and a drain check shuttle within the housing and configured to move reciprocally with respect to both the housing and the hollow tube, wherein the drain check shuttle has: a first position within the housing at which the drain check shuttle abuts the valve seat, and closes a gap between the valve seat and the inlet to the hollow tube; and a second position displaced from the valve seat and which opens the gap.
公开/授权文献
- US20210146381A1 FLOW CONTROL DEVICE WITH DRAIN CHECK 公开/授权日:2021-05-20
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