Particle filtering and regenerating device

Abstract

The invention relates to a particle filtering and regenerating device for a bus. The particle filtering and regenerating device has a simple structure, small size, low manufacturing cost, and convenience in installation, and comprises a shell made of stainless steel materials, and a ceramic filter for filtering particles in tail gas discharged by the bus, wherein an air inlet pipe connected with an exhaust port of an engine is arranged on the front end of the shell; an exhaust pipe is arranged on the rear end of the shell; a bypass pipe for discharging the particles is arranged on the shell; a butterfly valve is arranged on the bypass pipe; and a pneumatic element, an electromagnetic valve and a controller for controlling the electromagnetic valve are arranged. When the bus is parked in a fixed site, a connector on the end part of the exhaust pipe is connected with a compressed air source which is outside the bus and is used for regenerating, the compressed air is injected to drop the particles from the filter, the dropped particles enter into a particle collection device outside the bus through the bypass pipe, and the size of the particle collection device corresponds to the size of a silencer on the bus, so that the modification is convenient.

Description

technical field [0001] The utility model relates to a particle filtering and regenerating device, which is used for filtering the particles in the tail gas of a diesel engine bus and regenerating the filtering device. Background technique [0002] "Automotive Environmental Protection Technology" published by Beijing University of Aeronautics and Astronautics Press in February, 2004, a kind of particle filter device with reverse jet purifier is introduced in the page 302-304, and this particle filter device comprises two groups of filter cores, each group The filter elements have a purified exhaust pipe respectively, and a butterfly valve is installed on the pipe, and a compressed air pipeline is installed on the purified exhaust pipeline between the butterfly valve and the filter element. There is an electric heater inside, and its working method is that when filtering, the butterfly valve on the purified exhaust pipe of each filter element is in the open position, and the p...

AI Technical Summary

Problems solved by technology

[0004] However, since the particulate filter device with reverse jet purifier is designed considering the factors affecting the engine operation, it results in large volume, complex structure, high manufacturing cost, and large gas consumption during reverse jet, which will inevitably lead to the failure of the gas storage tank. The pressure drop affects the normal operation of other pneumatic devices on the vehicle. If the capacity of the gas storage tank is increased, the device will take up more space in the vehicle, which is very inconvenient to use on urban buses.

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