Vent cover device for volatile fuel container

Patent name: Ventilation capping device for a volatile fuel container Patent Applicant Shanghai Zhongyou Enterprise Group Co., Ltd. Principal Applicant Address 200350, Room 707, No. 6, Lane 1488, Changning Road, Shanghai, China Inventor Jiang Miaofan Application (Patent) No. 200410025489.4 Date of Application 2004.06. 25 Certification Date Approval Notice No. 1712322 Auditing Notice Date 2005.12.28 Manual CD-ROM D0552 Main Classification Number B65D51/16 Classification No. B65D51/16 Subsidiary Original Application Number Priority Item Abstract A ventilating capping device for volatile fuel containers, The utility model is composed of a cover body. A vent pipe is vertically arranged in the top wall of the cover body. One end of the vent pipe is communicated with the inner cavity of the cover body, and the other end of the vent pipe is communicated with the outer side of the cover body. The vent pipe is provided with a porous ceramic cylinder. A sealing cap is arranged at one end of the trachea in the inner cavity of the cap, and a vent hole is arranged in the center of the sealing cap. The diameter of the vent hole is smaller than the diameter of the vent pipe, and a sealing ring is arranged between the sealing cap and the lower end face of the porous ceramic cylinder. The porous ceramic cylinder consists of a mesh-type porous ceramic material or a foam-type porous ceramic material. In the invention, a vent pipe with a porous ceramic cylinder is arranged on the cover body, which can not only prevent the liquid from leaking, but also release the pressure in time and eliminate the hidden danger of safety. The second vent pipe disposed vertically at the outlet end of the vent pipe can prevent the sewage and foreign matter from blocking the vent pipe and ensure the normal state. Sovereignty item 1. A ventilating capping device for a volatile fuel container, comprising a cap body, an internal cavity is disposed inside the cap body, and a screw thread is disposed on the sidewall of the internal cavity. A vent pipe is vertically arranged in a top wall of the cover body, one end of the vent pipe is communicated with the inner cavity of the cover body, and the other end of the vent pipe and the outer side of the cover body are communicated. In communication, the vent pipe is provided with a porous ceramic cylinder, the vent pipe is provided with a sealing cover at one end of the cavity inside the cover, and the vent cover is provided at the center of the sealing cover. The diameter of the air hole is smaller than the diameter of the vent pipe, a sealing ring is arranged between the sealing cover and the lower end surface of the porous ceramic cylinder, and the porous ceramic cylinder is made of mesh-type porous ceramic material or foam type. Porous ceramic material composition.