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Title:
TEMPERATURE-CONTROLLABLE LIQUID NITROGEN SPRAY GUN
Document Type and Number:
WIPO Patent Application WO/2021/036474
Kind Code:
A1
Abstract:
A temperature-controllable liquid nitrogen spray gun, comprising a spray gun body (1) and a liquid nitrogen tank (2). The spray gun body (1) is fixedly connected to the liquid nitrogen tank (2) by means of a connecting portion (3), and a thermal insulation layer (5) is provided on the inner surface wall of the liquid nitrogen tank (2); a through hole (307) is provided on a sliding groove (306); a sleeve (308) is provided at the top of an upper connecting port (305); both the outer bottom of the sleeve (308) and the inner top of the upper connecting port (305) are provided with fixed blocks (309). The structure has the advantages that: firstly, the upper connecting port (305) is slidden into the interior of the lower connecting port (301) to enable a limiting block (304) to slide along the sliding groove (306), and then the upper connecting port (305) is rotated to enable the limiting block (304) to be engaged into the through hole (307), so that the spray gun body (1) is connected to the liquid nitrogen tank (2); secondly, the sleeve (308) is moved downwards, the limiting block (304) is extruded from the through hole (307) by means of the fixed block (309), and then the upper connecting port (305) is reversely rotated to enable the limiting block (304) to slide out of the sliding groove (306), so that the spray gun body (1) can be removed. By means of the engagement connection of the limiting block (304), the thread slipping problem is avoided, and the service life of the connecting portion (3) is prolonged.

Inventors:
SUN YULI (CN)
QIAN BINGKUN (CN)
SUN SHUQIN (CN)
XIE XIAOPING (CN)
SHENG YI (CN)
Application Number:
PCT/CN2020/098989
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:
B65D47/34; B05B11/06
Foreign References:
CN206464112U2017-09-05
CN206464112U2017-09-05
CN108525879A2018-09-14
CN108816619A2018-11-16
CN205706134U2016-11-23
CN205763393U2016-12-07
CN207967482U2018-10-12
JP2014018691A2014-02-03
Attorney, Agent or Firm:
NANJING TAIPU PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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