Urea pump and urea system containing same

A urea pump and urea technology, applied in the field of urea pumps and urea systems, can solve the problems of high material cost and manufacturing cost, inconvenient manufacturing and assembly, complex structure, etc., and achieve the effects of easy assembly and operation, reduced installation space, and prevention of deposition

Active Publication Date: 2015-08-05
DONGGUAN ZHENGYANG ELECTRONICS MECHANICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the structure of this scheme is relatively complicated, which is not convenient for manufacturing and assembling
[000...

Method used

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  • Urea pump and urea system containing same
  • Urea pump and urea system containing same
  • Urea pump and urea system containing same

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Embodiment Construction

[0053] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0054] An embodiment of the present invention provides a urea pump, including: a urea branch and a gas branch, wherein the urea branch includes: a liquid inlet that provides the inlet of the urea solution, a liquid outlet that provides the outlet of the urea solution, and a The urea solution pump powered by the liquid inlet part to the liquid outlet part, and the first switch device arranged between the liquid inlet part and the liquid outlet part are used to connect the liquid inlet part to the liquid outlet part. The liquid outlets are selectively communicated; the gas branch circuit includes: an air inlet providing a gas inlet, an air outlet providing a gas outlet, and a second switch device arranged between the air inlet and the air outlet , for selectively communicating between the air inlet po...

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Abstract

The invention discloses a urea pump and a urea system containing same. The urea pump comprises a urea branch and a gas branch; the urea branch comprises a liquid feeding part, a liquid outlet part, a urea liquid pump and a first switch device, wherein the liquid inlet part is used for providing a urea solution inlet, a liquid outlet part is used for providing a urea solution outlet, the urea liquid pump is used for providing power for feeding urea solution to the liquid outlet part from the liquid inlet part, and the first switch device is used for realizing the selective communication between the liquid inlet part and the liquid outlet part; the gas branch comprises an air inlet part, an air outlet part and a second switch device, wherein the air inlet part is used for providing a gas inlet, the air outlet part is used for providing a gas outlet, and the second switch device is used for realizing the selective communication between the air inlet part and the air outlet part; the first switch device is connected with the second switch device so that the urea branch is selectively communicated with the gas branch. According to the urea pump provided by the invention, the function of a traditional urea pump can be realized, and the function of back flushing urea can be realized.

Description

technical field [0001] The invention relates to the field of diesel vehicle tail gas treatment and purification, in particular to a urea pump and a urea system containing the same. Background technique [0002] The automotive urea system is mainly used to reduce the nitrogen oxide pollution in the exhaust of diesel vehicles, and generate pollution-free nitrogen and water vapor for discharge. The urea system mainly includes: a urea tank for storing urea solution, a urea pump for pumping the urea solution in the urea tank into the exhaust pipe, a urea level sensor for detecting the liquid level in the urea tank, and a cooling device to prevent urea crystallization water system. Chinese patent document CN 103352745A discloses an "air-assisted urea pump system", such as figure 1 As shown, it includes: the electronic control unit of the urea pump, the main body of the urea pump, the mixing chamber, the urea tank and the vehicle-mounted compressed air source. The mixing chamber...

Claims

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Application Information

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IPC IPC(8): F01N3/28F04B49/06
Inventor 顾一新
Owner DONGGUAN ZHENGYANG ELECTRONICS MECHANICAL CO LTD
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