Carbon tank oil tank cover

Abstract

The invention relates to the technical field of carbon tank equipment, in particular to a carbon tank oil tank cover. The carbon tank oil tank cover comprises an oil tank outer cover and an oil tank inner cover, a filling cavity is formed in the middle of the oil tank inner cover, an upper port of the filling cavity is wrapped with the oil tank outer cover, a volume cavity is formed in the bottom of the oil tank inner cover, an upper ventilation cover is arranged at the upper end of the volume cavity, an air guiding gap is formed between the side wall of the upper ventilation cover and the inner wall of the volume cavity, a lower breathing plate is arranged at the bottom of the filling cavity, a welding ring is arranged between the lower breathing plate and the bottom of the filling cavity, a port in the upper end of the volume cavity is formed in the inner side of the welding ring, the lower surface of the lower breathing plate is fixedly connected with the filling cavity through the welding ring, and an air inlet and exhaust hole is formed in the bottom face of the volume cavity. The phenomenon that oil suction padding enters the volume cavity from the gap between the filling cavity and the lower breathing plate so as to enter the oil tank is avoided, the phenomena that the oil suction padding pollutes fuel oil in the oil tank, and the blocks a carburetor are avoided, and the oil tank cover is more environment-friendly and safer.

Description

technical field [0001] The invention relates to the technical field of carbon canister equipment, in particular to a carbon canister oil tank cap. Background technique [0002] Many of the fuel tank caps on the market now fill an inner cavity with carbon powder. When the pressure in the fuel tank is greater than the external pressure, the oil and gas in the fuel tank are discharged to the outside through the carbon powder chamber to achieve internal and external pressure balance. In the powder chamber, the fuel is partially received by the carbon powder, and the filtered gas is discharged to the outside, so as to achieve the purpose of controlling fuel emission and reducing pollution. In order to allow oil and gas to enter the toner space in the fuel tank cap, there must be a channel for the corresponding oil and gas to pass through the bottom of the fuel tank cap. In actual use, when the gasoline engine stops, the fuel tank generates negative pressure, and the fuel tank A ...

AI Technical Summary

Problems solved by technology

In order to allow oil and gas to enter the toner space in the fuel tank cap, there must be a channel for the corresponding oil and gas to pass through the bottom of the fuel tank cap. In actual use, when the gasoline engine stops, the fuel tank generates negative pressure, and the fuel tank cap A little carbon powder will fall into the fuel tank through the channel from the fuel tank cap, polluting the fuel in the tank

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