Title:
BUILT-IN UREA SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/028944
Kind Code:
A1
Abstract:
A built-in urea supply device, comprising a base (1) and a pump assembly (2) mounted on the base (1). The base (1) is provided with a liquid outlet connector (10), a first plug (11) and a second plug (12) in communication with the first plug (11). The pump assembly (2) is in communication with the second plug (12) so as to suck a low-pressure urea solution, and after pressurization, the high-pressure urea solution is outputted from the liquid outlet connector (10). The built-in urea supply device further comprises a filter (3) detachably mounted on the base (1) and surrounding the periphery of the pump assembly (2). The filter (3) comprises an outer filter element (31), an inner filter element (32) and an annular cavity (30) located between the outer filter element (31) and the inner filter element (32), the first plug (11) being in communication with the annular cavity (30). The present invention provides easy replacement of the filter by arranging the detachable filter (3), and also improves the filtering capacity of the filter (3) by arranging the outer filter element (31) and the inner filter element (32).
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Inventors:
XUE YUNFENG (CN)
GONG CHAO (CN)
LIN KUI (CN)
GONG CHAO (CN)
LIN KUI (CN)
Application Number:
PCT/CN2017/099317
Publication Date:
February 14, 2019
Filing Date:
August 28, 2017
Export Citation:
Assignee:
TENNECO SUZHOU EMISSION SYSTEM CO LTD (CN)
International Classes:
F01N3/20
Foreign References:
| CN207080267U | 2018-03-09 | |||
| CN106401902A | 2017-02-15 | |||
| CN202113780U | 2012-01-18 | |||
| CN101778662A | 2010-07-14 | |||
| US20130263938A1 | 2013-10-10 |
Attorney, Agent or Firm:
SUZHOU WISPRO INTELLECTUAL PROPERTY AGENCY (CN)
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