Title:
THREE-STAGE VARIABLE COLOR PASTE PUMP AND OPERATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/041051
Kind Code:
A1
Abstract:
A three-stage variable color paste pump, comprising: a differential pump, which includes: a rodless cavity, a rod containing cavity, and a piston rod; configuring a control valve, which comprises a valve body (120) and a valve core, wherein the valve body is provided with a rod containing cavity opening (101) which is in communication with the rod containing cavity; configuring a rodless cavity opening (104) as in communication with the rodless cavity, configuring a color paste tank opening (106) as in communication with a color paste tank, and configuring an injection outlet (105); configuring a channel (111) on the valve core, moving the valve core to different positions may form the following communication structures: position 1, the rodless cavity communicates with the injection outlet (105), and the rodless cavity communicates with the rod containing cavity; position 2, the rod containing cavity opening (101) communicates with the injection outlet (105), and the rodless cavity communicates with the color paste tank; position 3, the rodless cavity communicates with the injection outlet (105), and the rod containing cavity communicates with the color paste tank. The above is an operation method for the three-stage variable color paste pump. The pump uses one differential pump to achieve three-stage injection output, i.e., large-amount injection output, intermediate-amount injection output and trace-amount injection output, thus ensuring the accuracy of the injection output of the color paste pump. The pump has a simple structure, takes up a small surface area, and is easy to use.
Inventors:
HUANG SONG (CN)
XUE WEIDAN (CN)
XUE WEIDAN (CN)
Application Number:
PCT/CN2017/099190
Publication Date:
March 08, 2018
Filing Date:
August 26, 2017
Export Citation:
Assignee:
ZHENGZHOU SANHUA TECH & INDUSTRY CO LTD (CN)
International Classes:
F04B49/06
Foreign References:
| CN205386893U | 2016-07-20 | |||
| CN104564630A | 2015-04-29 | |||
| CN202560534U | 2012-11-28 | |||
| CN101576069A | 2009-11-11 | |||
| CN1516783A | 2004-07-28 |
Other References:
See also references of EP 3508722A4
Attorney, Agent or Firm:
ZHENGZHOU ZHONGYUAN PATENT AGENCY LTD. (CN)
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