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Title:
LOW-TEMPERATURE NITROGEN SANDBLASTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/036475
Kind Code:
A1
Abstract:
A low-temperature nitrogen sandblasting device, comprising a reaction chamber (1), a circulation gas pump (2) being fixedly connected to an outer side wall of the reaction chamber, a material storage tank (3) being fixedly connected to the bottom of the reaction chamber, and the material storage tank being in communication with the circulation gas pump by means of a second valve (7). The material storage tank, the circulation gas pump and a vacuum pump (22) are provided outside the reaction chamber, a gas inlet (8) is provided at a gas inlet end of the circulation gas pump, a connecting pipe (4) is provided at a gas outlet end of the circulation gas pump, and a plurality of nozzles (6) and first valves (5) are provided on the connecting pipe. The low-temperature nitrogen sandblasting device is used to prevent water vapor from turning into frost and then attaching to a workpiece when nitrogen is cooled, the nitrogen and abrasive can be recycled, thereby the machining process is low-carbon and environmentally friendly.

Inventors:
SUN YULI (CN)
LIU XU (CN)
SUN SHUQIN (CN)
XIE XIAOPING (CN)
SHENG YI (CN)
Application Number:
PCT/CN2020/098991
Publication Date:
March 04, 2021
Filing Date:
June 29, 2020
Export Citation:
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Assignee:
NANJING XINGHE PRECISION INTELLIGENT MANUFACTURING RES INSTITUTE CO LTD (CN)
International Classes:
B24C3/00; B24C7/00; B24C9/00
Foreign References:
CN106078533A2016-11-09
CN205703779U2016-11-23
CN207877796U2018-09-18
CN109676538A2019-04-26
US5846338A1998-12-08
JP2017020440A2017-01-26
Attorney, Agent or Firm:
NANJING TAIPU PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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