Title:
AIR PRESSURE CONTROL VALVE OF AIR EXPANSION SHAFT
Document Type and Number:
WIPO Patent Application WO/2019/128127
Kind Code:
A1
Abstract:
Disclosed is an air pressure control valve of an air expansion shaft, the air pressure control valve comprising a valve body (7), wherein the valve body (7) is provided with a low pressure air intake port (5) and a high pressure air intake port (4), the valve body (7) is further provided with a valve stem channel (12), one side of the valve stem channel (12) is in communication with the low pressure air intake port (5) and the high pressure air intake port (4), the other side of the valve stem channel (12) is in communication with two vertically provided air outlet tubes, and the two air outlet tubes are connected to an air expansion shaft connector (11) on the valve body (7) via an air outlet channel; and a valve stem is provided in the valve stem channel (12), a communicating tube (6) is provided in the valve stem (13), a one-way valve is provided on the communicating tube (6), a lower middle part of the valve stem (13) is closed from the valve stem channel (12), a sealing ring (2) is provided on the valve stem (13), and a gap is provided between an upper part of the valve stem (13) and the valve stem channel (12). By providing three valve positions, the valve stem (13) is pulled up from bottom to top, can switch from a low pressure air intake state to a high pressure air intake state, and can adjust a raised key of the air expansion shaft from a semi-expansion state to a high pressure expansion state, facilitating micro-adjustments to a roll on the air expansion shaft when in a low pressure semi-expansion state.
Inventors:
WEI JIE (CN)
Application Number:
PCT/CN2018/091117
Publication Date:
July 04, 2019
Filing Date:
June 13, 2018
Export Citation:
Assignee:
YANCHENG HUASEN MACHINERY CO LTD (CN)
International Classes:
F16K11/065
Foreign References:
| CN207728947U | 2018-08-14 | |||
| CN201973289U | 2011-09-14 | |||
| CN201580858U | 2010-09-15 | |||
| CN206206698U | 2017-05-31 | |||
| CN2858600Y | 2007-01-17 | |||
| JPH07198048A | 1995-08-01 | |||
| US9546737B1 | 2017-01-17 |
Attorney, Agent or Firm:
SHENZHEN SHENZHOU UNITED INTELLECTUAL PROPERTY OFFICE (CN)
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