Title:
CHEMICAL INJECTION CONTROL METHOD AND CONTROL DEVICE OF CHEMICAL FOR TREATING CIRCULATING WATER IN WET-TYPE PAINTING BOOTH
Document Type and Number:
WIPO Patent Application WO/2019/225352
Kind Code:
A1
Abstract:
On the basis of measured values of the turbidity and suspended substance concentration in circulating water, chemical injection control of a treatment chemical is performed for detackifying, aggregating and floating paint in circulating water in a wet-type painting booth. When the measured value of the turbidity or suspended substance concentration becomes greater than or equal to a prescribed value A set in advance, adding of the treatment chemical is started or the amount added of the treatment chemical is increased; when the measured value of the turbidity or suspended substance concentration becomes less than or equal to a prescribed value B set in advance, adding of the treatment chemical is stopped or the amount added of the treatment chemical is reduced.
Inventors:
YOSHIDA TSUNEYUKI (JP)
FUKUDA TAKAHIRO (JP)
FUKUDA TAKAHIRO (JP)
Application Number:
PCT/JP2019/018718
Publication Date:
November 28, 2019
Filing Date:
May 10, 2019
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F1/54; B01D21/30; B05B14/462; B05B16/00; C02F1/24; C02F1/56
Foreign References:
| JP2001170528A | 2001-06-26 | |||
| JP2015027637A | 2015-02-12 | |||
| JP2008173562A | 2008-07-31 | |||
| JP2011072866A | 2011-04-14 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
Download PDF: