Title:
METHOD OF SUPPLYING INJECTION GRAINS IN DIRECT PRESSURE ABRASIVE BLASTING MACHINE, AND DIRECT PRESSURE ABRASIVE BLASTING MACHINE
Document Type and Number:
WIPO Patent Application WO/2014/030595
Kind Code:
A1
Abstract:
This direct pressure abrasive blasting machine supplies fine grains to an injection nozzle without causing said grains to agglomerate. This direct pressure abrasive blasting machine (1) is provided with: a pressurization tank (11), a grain acceleration path (12) into which grains in the pressurization tank (11) are introduced; a grain supply tube (13) communicating between the grain acceleration path (12) and an injection nozzle (40); and a compressed gas supply source (not shown) for introducing a compressed gas (2) into the pressurization tank (11) and the grain acceleration path (12), wherein the pressure of the compressed gas introduced into the pressurization tank (11) and the grain acceleration path (12) is repeatedly fluctuated by at least a prescribed pressure difference. By means of these pressure fluctuations, the gas present in the gaps between the grains is repeatedly compressed and expanded, preventing agglomeration of the grains and ensuring flowability.
Inventors:
KANDA SHINJI (JP)
Application Number:
PCT/JP2013/072006
Publication Date:
February 27, 2014
Filing Date:
August 16, 2013
Export Citation:
Assignee:
ELFO TEC CO LTD (JP)
International Classes:
B24C7/00
Foreign References:
| JP2009078334A | 2009-04-16 | |||
| JP2000326230A | 2000-11-28 | |||
| JP2004154894A | 2004-06-03 | |||
| JP2001252872A | 2001-09-18 | |||
| JP2005288618A | 2005-10-20 |
Attorney, Agent or Firm:
JITSUKAWA, Eiichiro (JP)
Eiichiro Jitsukawa (JP)
Eiichiro Jitsukawa (JP)
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