Liquid reducing agent metering and spraying device

• Main Authors: ZHAI HONGFEI, NIU JINGHONG, LIU XIAOJIAN, FENG BIAO, BI MINGSONG, LI BO
• Format: Patent
• Language: Chinese; English
• Published: 22.01.2019
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

The invention provides a liquid reducing agent metering and spraying device. A urea aqueous solution spraying and pressure-stabilizing effect can be achieved by a filtering and energy storage device by a mode of discontinuously supplementing pressure for the filtering and energy storage device through a conveying pump, compared with a mode of continuous overflowing and liquid returning to a throttling valve and a pressure valve through a conveying pump to achieve a urea aqueous solution spraying and pressure-stabilizing effect, the urea metering and spraying device is simple and reliable in structure, the service life of the conveying pump (which does not need to run with large load) is prolonged, the reliability of the conveying pump is improved, and moreover, the running cost of the device is greatly reduced. In addition, a two-position four-way reversing valve which is complicated in structure is not required in a spraying and emptying stage of the device, the structural complexityof the device is greatly