Title:
MOLTEN METAL PUMP AND METHOD OF ADJUSTING PUMPING CAPACITY OF MOLTEN METAL PUMP
Document Type and Number:
WIPO Patent Application WO/2019/181884
Kind Code:
A1
Abstract:
A molten metal pump provided with a pump chamber unit and a drive unit, wherein ejection and suction are performed by driving molten metal in a pump chamber of the pump chamber unit by means of the drive unit. The pump chamber unit comprises an outer cylinder and an inner cylinder detachably accommodated in the outer cylinder. The outer cylinder is configured as a bottomed cylindrical body having an outer cylinder bottom wall and an outer cylinder side wall. The inner cylinder is configured as a bottomed cylindrical body having an inner cylinder bottom wall and an inner cylinder side wall. The molten metal pump is further provided with a ring-shaped spacer which is interposed between an inner surface of the outer cylinder bottom wall and an outer surface of the inner cylinder bottom wall in a sealed state and detachably. The spacer defines and forms a space between the inner surface of the outer cylinder bottom wall and the outer surface of the inner cylinder bottom wall into a pump chamber. The spacer can be replaced with another spacer with a different height to vary the interval between the outer cylinder bottom wall and the inner cylinder bottom wall, whereby the volume of the pump chamber can be changed and pumping capacity can be adjusted.
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Inventors:
TAKAHASHI KENZO (JP)
Application Number:
PCT/JP2019/011263
Publication Date:
September 26, 2019
Filing Date:
March 18, 2019
Export Citation:
Assignee:
TAKAHASHI KENZO (JP)
International Classes:
B22D35/00; B22D17/30; H02K44/06
Domestic Patent References:
| WO2010084945A1 | 2010-07-29 |
Foreign References:
| JP2011139611A | 2011-07-14 | |||
| JP2011017521A | 2011-01-27 | |||
| JP2014213333A | 2014-11-17 | |||
| JP2015190661A | 2015-11-02 | |||
| JP2010169381A | 2010-08-05 | |||
| JP5496647B2 | 2014-05-21 |
Other References:
See also references of EP 3769863A4
Attorney, Agent or Firm:
NAGAI Hiroshi et al. (JP)
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