Zhejiang Chongfu Rubber & Plastic Co., Ltd. has an annual output of 10 million ball cage dust cover technical transformation projects (exhaust gas, waste water) self-acceptance open
新闻概况： Zhejiang Chongfu Rubber & Plastic Co., Ltd. annual production of 10 million ball cage dust cover technical transformation project (exhaust gas, waste water) environmental protection acceptance meeting was held on July 19, 2018 in the company's conference room. The meeting was presided over by the construction unit. The participants included Zhejiang Taicheng Environmental Technology Co., Ltd. (environmental assessment unit), Taizhou Huanmei Environmental Engineering Technology Co., Ltd. (design unit of waste gas treatment facilities), and Zhejiang Luan Testing Technology Co., Ltd. (acceptance monitoring unit) ) and other units and 3 specially invited experts (the list is attached).
The concept of valve oil seal
The valve oil seal can prevent oil from entering the intake and exhaust pipes, causing oil loss, preventing the leakage of gasoline and air mixture and exhaust gas, and preventing engine oil from entering the combustion chamber. Valve oil seal is one of the important parts of the engine valve group. It is in contact with gasoline and oil at high temperature. Therefore, it is necessary to use materials with excellent heat resistance and oil resistance, generally made of fluororubber.
Key points of use of seals
The inner surface of the hydraulic cylinder is usually processed by rolling, which not only improves the surface roughness, but also makes the surface hardened by cold work, which is beneficial to prolong the service life of the sealing ring. In addition, the pressure used, the length and type of the sliding surface also have a great influence on the service life. Therefore, the "regular inspection" time should be decided according to these conditions.
The reasonable use of high temperature oil seals needs to pay attention to these matters!
Special care must be taken to prevent dirt from infiltrating the oil seal. Oil seals are classified according to the rotational speed of the shaft. Oil seals can be divided into low-speed oil seals (less than 6m/s) and high-speed oil seals (greater than 6m/s). According to the pressure level that the oil seal can withstand, it can be divided into normal pressure type oil seal and pressure type oil seal. According to the structure and sealing principle of the oil seal, it can be divided into standard oil seal and dynamic return oil seal. In addition, according to the material classification of the oil seal components, it can be divided into a skeleton type oil seal and a skeleton type oil seal, a spring type oil seal and a springless type oil seal.
The role of various sealing rings
The V-shaped seal is an axially acting elastic rubber seal used as a pressureless seal for the shaft. The sealing lip has good mobility and adaptability, can compensate for large tolerances and angular deviations, can prevent the internal grease or oil from leaking out, and can also prevent the intrusion of external splashing water or dust.
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