安装橡胶接头前对所有的螺栓、螺母、对称的法兰进行认真的检查。 Guide: carefully inspect all bolts, nuts and symmetrical flanges before installing rubber joints. If the flange is perforated with inconsistent bolt sizes, thread slides, deformations, and elongated screws, replacement must be performed to avoid leakage and slipping after installation, which will cause insufficient pressure, which will increase the difficulty of disassembly and replacement later.
First, carefully inspect all bolts, nuts and symmetrical flanges before installing rubber joints
. If the flange is perforated with inconsistent bolt sizes, thread slides, deformations, and elongated screws, replacement must be performed to avoid leakage and slipping after installation, which will cause insufficient pressure, which will increase the difficulty of disassembly and replacement later.
2. After the nut of the fastening bolt is tightened during the installation of the rubber joint, the reserved length must not be less than the length of the nut itself. If it is not long enough, it should be replaced directly to facilitate future disassembly and maintenance. For assembly of mechanical pipes with large vibration, Flange fastening bolts should be equipped with springs and gaskets in accordance with relevant regulations. The material of the bolts used should be the same as the flange material. For example, the stainless steel flange assembly type must use the same matching stainless steel bolts, nuts, gaskets, springs, etc.
3. The strength of tightening the bolt should be stable, as long as the two ends of the spring washer are flush with each other. Use a wrench, socket, and allen wrench for the tool. Do not use a relay lever to apply a large amount of pressure on the nut. Do not use an open-end wrench. Do final tightening to avoid nut corner damage (rubber joints are mainly used for water supply and drainage pipes, ambient temperature and humidity will cause rusted edges of damaged nuts to reduce bolt life) and avoid damage to bolts and nuts.
4. When bolts are perforated and tightened symmetrically with the flange, the bolts should be subjected to angular symmetrical force. Do not tighten them all first. Leave a little margin for movement to facilitate the final tightening and debugging. Observe the horizontal angle of the two pipes connected by the rubber joint. If necessary, use a spirit level to debug; make sure that the installation angle is uniform and symmetrical, then symmetrical, cross, stable, and diagonally tighten first, and finally use a plum wrench to make the final detailed debugging.
5. For some special application pipeline standards, the requirements for fastening bolts used in the installation of flexible rubber joint flange connections are relatively special. With the rapid development of science and technology, the types of fastening bolts are also updated. . The above tightening techniques apply only to international metric standard bolts. Flexible steel joints commonly used in steel structural connection bolts have performance ratings of 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 and more than 10 grades, of which bolts of grade 8.8 and above are made of low-carbon alloy steel Or medium carbon steel and heat treatment (quenching, tempering), commonly known as high-strength bolts, the rest are commonly known as ordinary bolts.
Shanghai Luoying Pipeline Equipment Co., Ltd.
has more than 20 years of production experience. It has strict quality control from the production of rubber joints to finished products. It also uses special rubber to make special rubber joints, regardless of the choice of raw materials. From the manufacturing process of rubber joints, we all have unique experience and solutions to ensure the quality of each rubber joint. Welcome everyone to come and buy! For details, please contact the hotline 021-622212627.