Title:
DUAL-MODE PRESSURE REDUCER
Document Type and Number:
WIPO Patent Application WO/2018/196575
Kind Code:
A1
Abstract:
A dual-mode pressure reducer, belonging to the technical field of pressure reducers and comprising: a sampling head lower housing (6) and a sampling head upper housing (1) connected to each other. The top of the sampling head lower housing (6) is provided with a petri dish holder (5) for fixing a petri dish. The top of the sampling head upper housing (1) is provided with a gas diversion blocking plug (2). The bottom of the sampling head upper housing (1) is provided with a gas diversion sieve plate (4). A gas pipe connector of the sampling head lower housing (6) is connected to a through-wall gas connector (17) via a pipe. A gas outlet end of the through-wall gas connector (17) is connected to a T-type gas connector (18). One end of the T-type gas connector (18) is connected to a pressure sensor (14), and another end is connected to a safety valve (7). A gas outlet of the safety valve (7) is connected to a gas inlet of a flow sensor (8). A gas outlet of the flow sensor (8) is connected to a pressure reducing valve (13). A gas outlet of the pressure reducing valve (13) is connected to a gas inlet of a proportional valve (9). A gas outlet of the proportional valve (9) is connected to a gas outlet adapter block (10). The dual-mode pressure reducer of the invention has a simple and appropriate structure and an ingenious design, enables constant-pressure microbial collection, and can also act as a high-pressure gas diffuser.
Inventors:
XIE YUNFANG (CN)
Application Number:
PCT/CN2018/081885
Publication Date:
November 01, 2018
Filing Date:
April 04, 2018
Export Citation:
Assignee:
WUXI TECHMAC SCIENT INSTRUMENT CO LTD (CN)
International Classes:
G01N1/14
Foreign References:
| CN107063765A | 2017-08-18 | |||
| CN206696027U | 2017-12-01 | |||
| CN206074314U | 2017-04-05 | |||
| CN106324052A | 2017-01-11 | |||
| CN104865106A | 2015-08-26 | |||
| CN105911132A | 2016-08-31 | |||
| US20130149790A1 | 2013-06-13 |
Other References:
See also references of EP 3553490A4
Attorney, Agent or Firm:
WUXI DAWEI PATENT TRADE MARK AGENCY (GENERAL PARTNERSHIP) (CN)
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