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Detachable swirling vehicle SCR mixer and nozzle coupling device

A coupling device and mixer technology, applied in the direction of muffler, exhaust device, machine/engine, etc., can solve the problems of urea crystallization, uneven distribution of ammonia, poor urea crushing, etc.

Active Publication Date: 2019-01-18
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main technical problem to be solved by the present invention is to provide a detachable swirling vehicle SCR mixer and nozzle coupling device, which is beneficial to the pyrolysis of urea and can effectively solve the problem of poor urea crushing, urea crystallization and ammonia distribution The problem of unevenness, and easy to disassemble, which is conducive to daily maintenance and repair

Method used

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  • Detachable swirling vehicle SCR mixer and nozzle coupling device
  • Detachable swirling vehicle SCR mixer and nozzle coupling device
  • Detachable swirling vehicle SCR mixer and nozzle coupling device

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Embodiment Construction

[0020] The specific implementation manner of the patent of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1-5 Among them, including urea delivery elbow 1, inlet flange and sealing ring 2, housing shrinkage section 3, swirl mixer 4, outlet flange and sealing ring 5, urea nozzle 6.

[0022] Such as Figure 1-5 As shown, the present invention is a detachable swirl type vehicle SCR mixer and nozzle coupling device, including a housing, and the two ends of the housing are respectively provided with an inlet flange and a sealing ring 2, an outlet flange and a sealing ring 5. A swirl mixer 4 is installed inside the housing. The mixer is hollow and fixedly connected to the housing. A urea delivery elbow 1 is arranged between the air inlet and the mixer 4. One end of the elbow 1 is It passes through the casing and is connected to the pump, and the other end is connected to the mixer 4 , behind the mixer 4 is provi...

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Abstract

The invention belongs to the technical field of diesel exhaust aftertreatment, and relates to a novel detachable swirling vehicle SCR mixer and nozzle coupling device. The device comprises a casing. Front and rear flange plates are respectively disposed on two ends of the casing, and a swirling mixer is disposed in the casing. The mixer is designed in a hollow manner and is fixedly connected to the casing. A front flange plate connection port is an air inlet of the device, and a rear flange plate connection port is an air outlet of the device. A urea conveying elbow is arranged between the airinlet and the mixer, and the elbow is connected to the mixer. A urea nozzle is arranged on the rear of the mixer, and a casing section of the urea nozzle is in tapered design. The coupling device isbeneficial to urea pyrolysis, can effectively solve problems of urea cracking, urea crystallization and ammonia distribution uniformity, and the device is convenient to disassemble, and is convenientfor daily maintenance and repair.

Description

technical field [0001] The invention belongs to the technical field of post-treatment of diesel engine exhaust, and relates to a detachable swirl type vehicle SCR mixer and nozzle coupling device. Background technique [0002] The traditional SCR (Selective Catalytic Reduction Converter) catalytic converter installs the urea nozzle obliquely on the exhaust pipe through the connecting seat. For the same engine, different chassis and different layout spaces, the urea injection position will change, and the urea injection performance will be changed. also changes, resulting in the need for recalibration. At the same time, the traditional mixer is located behind the urea nozzle, which can easily lead to crystallization of urea on the mixer, and the blockage of the crystallization will lead to flow deterioration and cause a large pressure loss. At present, the new method and new way to solve the problem of urea crystallization in the integrated injection SCR mixer is to design a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/28F01N3/20
CPCF01N3/2066F01N3/28F01N2610/02F01N2610/1453F01N2610/1486Y02T10/12Y02A50/20
Inventor 沈伯雄潘奕君吴撼明
Owner HEBEI UNIV OF TECH
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