Title:
BELLOWS PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/223603
Kind Code:
A1
Abstract:
A control unit 6 of this bellows pump device 1 determines whether a second bellows 14 (first bellows 13) is being stretched when the first bellows (second bellows 14) has been contracted to a being-contracted state is determined, and when the determination result is affirmative, performs pressure-raising control in which a pressure raising instruction is output to a second electropneumatic regulator 52 (first electropneumatic regulator 51) so as to raise the air pressure of pressurized air supplied to a second intake-side air chamber 26B (first intake-side air chamber 26A) of a second drive unit 28 (first drive unit 27) during the subsequent stretching of the second bellows 14 (first bellows 13). The control unit 6 counts the number of times of continuously performing the pressure raising control, and determines that the second electropneumatic regulator 52 (first electropneumatic regulator 51) is abnormal when the counted number of times exceeds a predetermined number of times.
Inventors:
URATA DAISUKE (JP)
FUKUI KATSUHIKO (JP)
FUKUI KATSUHIKO (JP)
Application Number:
PCT/JP2023/000830
Publication Date:
November 23, 2023
Filing Date:
January 13, 2023
Export Citation:
Assignee:
NIPPON PILLAR PACKING (JP)
International Classes:
F04B49/06; F04B13/00; F04B43/08; F04B43/10
Domestic Patent References:
| WO2016021350A1 | 2016-02-11 |
Foreign References:
| JP2017219002A | 2017-12-14 |
Attorney, Agent or Firm:
SUNCREST PATENT AND TRADEMARK ATTORNEYS (JP)
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