The invention provides a fuel oil filling auxiliary device for preventing reverse spraying. The fuel oil filling auxiliary device comprises a pressure applying device, a connecting cylinder, a sealingring, a plug and a vacuum pump. The pressure applying device is used for applying downward axial pressure to the connecting cylinder through manual operation or auxiliary machinery, a fuel oil filling pipeline and a vacuumizing pipeline which are communicated with an inner cavity of the connecting cylinder are arranged on the connecting cylinder, and the shape of a pipeline opening of the fuel oil filling pipeline is the same as that of an automobile fuel oil filling opening. The tail end of the connecting cylinder is fixedly sleeved with a sealing ring and further connected with a plug, theplug is of a hollow structure, an inner cavity of the plug is communicated with an inner cavity of the connecting cylinder, an oil outlet hole is formed in the tail end of the plug, and the diameter of the plug is smaller than that of an automobile fuel oil filling port. The vacuum pump is connected with the vacuumizing pipeline; on the premise that an existing fuel oil filling gun is not changed,gas in the oil tank can be pumped through the vacuum pump when primary fuel oil filling is conducted on line, the air pressure in the oil tank is lower than the outside atmospheric pressure, and thefuel oil filling reverse spraying phenomenon is prevented.
本发明提供了一种用于防止反喷的燃油加注辅助装置,包括施压装置、联接筒、密封圈、堵头和真空泵;施压装置用于通过手动或辅助机械对联接筒施加向下的轴向压力,联接筒上设置有与联接筒内腔连通的燃油加注管道和抽真空管道,燃油加注管道的管道口形状与汽车燃油加注口形状相同;联接筒末端固定套设有密封圈,联接筒末端还连接有堵头,堵头为中空结构,堵头内腔与联接筒内腔连通,堵头末端开设有出油孔,且堵头的直径小于汽车燃油加注口的直径;所述的真空泵与所述的抽真空管道连接;本发明在不改变现有燃油加注枪的前提下,在线进行初次燃油加注时,可利用真空泵抽取油箱内的气体,是油箱内的气压低于外界大气压,防止发生燃油加注反喷现象。
Fuel oil filling auxiliary device for preventing reverse injection
一种用于防止反喷的燃油加注辅助装置
2021-01-08
Patent
Electronic Resource
Chinese
IPC: | B67D Ausschenken, Abgeben oder Überleiten von Flüssigkeiten, soweit nicht anderweitig vorgesehen , DISPENSING, DELIVERING, OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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