Rotary joint development review and future trend

ring slip for a lot of people belonging to the strange word, in Taiwan and abroad and is called the" pressure rotary joint" or" rotary joint". It is connected with an outer pipeline equipment dryer must be used. Involving more than 20 industries, which belong to the cross industry most one of the products. However, it is only in recent decades have, in the country's history of only thirty years time. Early people used sealing tape (or nylon rope) wrapped around the rotary shaft, rely on the hard friction and extrusion to prevent drying cylinder within the circulation medium leakage. Advantages of cheap material, easy to find. The disadvantage of using life is too short, long, but ten or twenty days, only three five days short of. Not only are the maintainer repair times increasing, more important is the device to pause frequently, so that the production cannot be normal. In foreign countries, from the beginning of this century the use of a rotary joint, which seals are metal, also with graphite, and rubber, for the pursuit of life, the number is set to several sealing, the circulation medium in a seal leak, and another sealing device. So that the service life of the product can be up to ten years. However, due to manufacturing structure closely, more repair complex, which brings a lot of inconvenience. One is the professional factory, machine, rotating joint understanding for less. Rotating joint in terms of equipment accounted for the proportion of small, for such a complex structure, the long appears to be at a loss what to do; two, with high technical content, accessories and not universal, and even their own people are unable to buy the right accessories, leakage and damage only when the waste treatment; three, product value is low, profit thin, services provide after sale service. At present, the aggravation of the market competition, foreign suppliers are supplied to large machinery factory, with a number of big have certain profit. While the use of the factory to repair to the original purchase accessories must be. One can imagine the mail fee. The most complex rotary joints, should belong to Germany. In the overall design of rotary joint spend a lot of thoughts. The most sophisticated rotary joint should belong to Japan. The same types of rotary joints than domestic production to small half, even smaller. Sealing material thin but durable. While other countries are much the same. Domestic manufacturers are innumerable, blossom everywhere, but canbe " under the kitchen, the hall is scanty." ". Is to compete on price, no long-term development thought. Willing to spend money on research and development of new products of the enterprises is too small, and too much imitation and workshop processing. The ability and technology enterprises are reluctant to delve into new areas. However, with the development of society, the increasing of large enterprises and export needs, forcing manufacturers to make efforts in quality, product appearance and endoparasitic take care of, otherwise, only waiting to be eliminated. At present, some enterprises have begun to introduce foreign technology and foreign parts, to fill the domestic blank. In product quality has certain promotion. Well, he said! Said there are more suspicious advertising!