Gasoline steam purifying device with flow returning function

Abstract

The invention relates to a gasoline steam purifying device with a flow returning function. The gasoline steam purifying device with the flow returning function comprises an upper cover, an impeller and a base body, wherein the upper cover is mounted at the upper end of the base body; a cavity is formed between the upper cover and the base body; a motor is mounted in the middle of the base body; a rotating shaft of the motor vertically extends into the cavity and is connected with the impeller; a through hole is vertically formed in the rotating shaft of the motor; the upper end of the through hole communicates with the impeller; a part, which is positioned below the motor, of the base body is sealed by a sealing cover; the lower end of the through hole communicates with a gap between the motor and the sealing cover; an air inlet is vertically formed in the cavity and corresponds to a position above the center of the impeller; and an air outlet which is arranged in the tangential direction of the impeller is formed in a side wall of the cavity. Rotation of the motor is controlled so as to drive the impeller to rotate, and therefore, pressure difference is formed. Oil steam is delivered into a manifold inlet and is prevented from being discharged in air, and the requirement of emission reduction is met.

Description

technical field [0001] The invention relates to the technical field of purification devices, in particular to a gasoline vapor purification device with a backflow function. Background technique [0002] As there are more and more cars with turbochargers on the market, the negative pressure of the turbocharged intake manifold is lower than that of the naturally aspirated intake manifold, and the oil vapor collected by the carbon canister cannot be directly sucked into the intake manifold, so that the carbon After the tank collects oil vapor, it cannot be discharged, and the oil vapor cannot be fully utilized, resulting in waste of resources. If the carbon tank is full of oil vapor and cannot be discharged, it will be dangerous. In addition, my country will implement the National VI emission standard for engines in 2019, requiring gasoline Less volatile emissions. In order to solve the above problems, a device that sucks oil vapor from the carbon canister to the intake manifold...

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Problems solved by technology

[0002] With more and more cars with turbochargers on the market, the negative pressure of the turbocharger is lower than that of the naturally aspirated intake manifold, and the oil vapor collected by the carbon canister cannot be directly sucked into the intake manifold, so that the carbon After the tank collects oil vapor, it cannot be discharged, and the oil vapor cannot be fully utilized, resulting in waste of resources. If the carbon tank is full of oil vapor and cannot be discharged, it will be dangerous. In addition, my country will implement the National VI emission standard for engines in 2019, requiring gasoline less volatile emissions

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