Title:
LINKAGE-BASED DUAL PRESSURIZATION PNEUMATIC SOURCE
Document Type and Number:
WIPO Patent Application WO/2020/000119
Kind Code:
A1
Abstract:
A linkage-based dual pressurization pneumatic source, comprising a three-bar linkage control mechanism (1), a pre-compression cylinder (2), a pressure increasing cylinder (3), and a pressure fine-adjustment mechanism (6). The pre-compression cylinder (2) performs pre-compression by means of air inlet check valves at two ends thereof. The pressure increasing cylinder (3) outputs pressurized air by means of a check valve at a front end thereof. The pressure fine-adjustment mechanism (6) employs movement of a fine-adjustment piston (6-2) in a fine-adjustment cylinder (6-4) to perform fine-adjustment of compressed air therein, thereby performing fine-adjustment of a pressure of a pneumatic source, solving the problem in the prior art in which adjustment of a pneumatic source is less precise and unable to meet various parameter requirements. The invention can be operated easily, creates a high pressure from application of a low pressure, and realizes fine pressure adjustment in a process of checking a pressure meter.
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Inventors:
HAN LIMIN (CN)
SUN FENGXIAN (CN)
ZHAO JINQIAO (CN)
SUN FENGXIAN (CN)
ZHAO JINQIAO (CN)
Application Number:
PCT/CN2018/000235
Publication Date:
January 02, 2020
Filing Date:
June 25, 2018
Export Citation:
Assignee:
BEIJING SPAKE TECH CO LTD (CN)
International Classes:
F04B33/00
Domestic Patent References:
| WO2013110255A1 | 2013-08-01 |
Foreign References:
| CN201225251Y | 2009-04-22 | |||
| CN205120305U | 2016-03-30 | |||
| CN206132307U | 2017-04-26 | |||
| CN304384547S | 2017-12-05 | |||
| CN304384548S | 2017-12-05 |
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