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Title:
EFFICIENT EVACUATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/062160
Kind Code:
A1
Abstract:
An efficient evacuation apparatus, comprising a sealed can (1), a first piston (2), telescopic rods (3), a vacuum pump (4), a driving device, one-way valves (21), a pressure sensor, and an electric control device (8). An air pipe (5) is communicated with an external apparatus to be evacuated by means of an air valve (6). Under the reciprocating driving action of the telescopic rods (3), the first piston (2) can continuously squeeze the air in the sealed can (1) to a position above the sealed can (1) in cooperation with the one-way valves (21) disposed on the first piston (2), and then evacuates the air by means of the vacuum pump (4), so that the sealed can (1) always maintains a certain degree of vacuum, and thus an evacuation operation of the external apparatus to be evacuated can be instantly completed by means of the air pipe (5) when evacuation is required.

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Inventors:
SU BINCHENG (CN)
Application Number:
PCT/CN2018/087726
Publication Date:
April 04, 2019
Filing Date:
May 21, 2018
Export Citation:
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Assignee:
SU BINCHENG (CN)
International Classes:
F04B37/14; F04B41/00; F04B41/02; F04C25/02
Foreign References:
CN107701405A2018-02-16
CN207261219U2018-04-20
CN206190523U2017-05-24
CN205876744U2017-01-11
CN201486861U2010-05-26
KR20030025544A2003-03-29
CN1278506A2001-01-03
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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