Acid-resistant manhole structure for concentrated sulfuric acid tank truck

• Main Authors: GUO SHIJIE, LIANG QINYI, ZHOU JIANHUI, SUN DONGXIANG, MA ZONGHONG, HOU JUN, ZOU SHUFENG
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2022
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING; VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TOCARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS; VEHICLES IN GENERAL

The utility model provides an acid-resistant manhole structure for a concentrated sulfuric acid tank truck, which solves the problems that a manhole cover and a manhole seat of a manhole of an existing concentrated sulfuric acid tank truck are easy to corrode, a sealing gasket is easy to corrode and fall off, so that the manhole loses a sealing function, is difficult to operate and the like, and the manhole structure mainly comprises the manhole cover and the cylindrical manhole seat, the manhole cover is characterized in that an annular sealing groove used for installing a sealing gasket is formed in the manhole cover; the annular sealing groove is of a structure with a small opening and a large inner cavity. A sealing face, used for being in butt joint with the manhole cover, at the upper end of the cylindrical manhole seat is an arc face. 本实用新型提供了一种浓硫酸罐车用耐酸人孔结构，解决了现有浓硫酸罐车的人孔存在人孔盖、人孔座易被腐蚀，密封垫易被腐蚀而脱落，从而造成人孔丧失密封功能，操作困难等问题，该人孔结构主要包括人孔盖以及筒状人孔座；其改进之处是：人孔盖上开设有用于安装密封垫圈的环形密封凹槽；环形密封凹槽为开口小且内腔室大的结构；筒状人孔座上端，用于与人孔盖对接的密封