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Title:
DIRECT-ACTING PRESSURE RELIEF PNEUMATIC DEVICE, PNEUMATIC CONTROL DRAIN VALVE, AND WATER TANK
Document Type and Number:
WIPO Patent Application WO/2023/092824
Kind Code:
A1
Abstract:
A direct-acting pressure relief pneumatic device, a pneumatic control drain valve, and a water tank. The direct-acting pressure relief pneumatic device comprises a housing (1), an air inlet cover (2), an inflatable telescopic member (3), a driven member (4), and a self-pressure relief mechanism (5); the inflatable telescopic member (3) can expand and extend in the housing (1) after being inflated; the self-pressure relief mechanism (5) comprises an air release hole (51) and a trigger member (52); the air release hole (51) is disposed on the inflatable telescopic member (3) and is in a normally closed state; the trigger member (52) is fixed to a movable end of the inflatable telescopic member (3); after the inflatable telescopic member (3) expands and extends in place, the trigger member (52) can open the air release hole (51) to enable the inflatable telescopic member (3) to deflate and contract. The pneumatic control drain valve comprises the direct-acting pressure relief pneumatic device. The water tank comprises the direct-acting pressure relief pneumatic device. By adoption of the direct-acting pressure relief pneumatic device, pressure relief can be automatically performed after the inflation is in place, operation is reliable, the structure is very simple, and cost is low.

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Inventors:
XIE WEI (CN)
CAI MINGJIAN (CN)
YU JIAOFENG (CN)
JIANG YISHAN (CN)
Application Number:
PCT/CN2021/144020
Publication Date:
June 01, 2023
Filing Date:
December 31, 2021
Export Citation:
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Assignee:
ARROW HOME GROUP CO LTD (CN)
International Classes:
E03D5/02; E03D1/34
Foreign References:
CN212641646U2021-03-02
CN206581357U2017-10-24
CN213990967U2021-08-17
EP1719847A22006-11-08
CN113202966A2021-08-03
CN109914554A2019-06-21
Attorney, Agent or Firm:
SCIHEAD PATENT AGENT CO., LTD (CN)
Download PDF:
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