Development trend of mixer in China

The mixer is referred to as the "take advantage of the machine", the full name is called "closed rubber mixing machine", is developed on the basis of the opening machine. After the 1820 invention of the mill, the rubber industry changed, but because the mills have many disadvantages, such as high labor intensity, low efficiency, high dust, seriously affecting people's health, so people began to consider whether the processing equipment with a cover to cover it up, then gradually developed into the mixer. Because it works in a mixer, it is called a closed. Because the work is open, it is called open rubber mixing machine. A general introduction is that the mixer is Banbury invented in 1916, the actual is the first by a Commercial Engineer in Germany (British) according to the design of the prototype machine company, because of its rapid development, production is widely used, so people always think that the Banbury mixer is the earliest published.
Since the emergence of the mixer, the mixing process shows a series of advantages over the mills have, such as the mixing time is short, high production efficiency, easy operation, overcome dust emissions, reduce agent loss, improve working conditions, reduce labor intensity etc.. Because it is developed to a large extent by experience, so in the early stages of development have seen that the low efficiency of plastic refining, it can not be used to refine the argument, but has been denied for production practice. Therefore, the appearance of the mixer is an important achievement of the rubber mixing machine, which is still a typical equipment in the process of mixing and mixing. According to foreign statistics, in the rubber industry, 88% of the rubber material is made by mixing machine, plastic, resin industry is also widely used mixer. Now - as a result of the continuous improvement of metal powder industry, part of the mixer can also be used to mix.
One of the symbols of modern mixer is high speed, high pressure and high efficiency. The rotor speed of 20rpm is usually referred to as the low-speed mixer, 30 ~ 40rpm is called a medium speed mixer, 60rpm above is called high-speed mixer.
There is a speed of up to 80rpm or even higher mixer, but also has a wide range of adaptability to the process and efficiency and processing means of two speed, three speed, variable speed mixer, but also the rotor speed ratio adjustable mixer. The operation time is greatly shortened, from the past slow machine 8 ~ 15min shortened to 1.5 ~ 3.5min, and some even up to 1 ~ 1.5min (including the use of mixing and mixing method of mixing process).
The structure of the mixer is also developing. The working process of the mixer and the mechanization and automation level of the whole unit are also increasing, and the program control is adopted.
In short, this development is to greatly enhance the mixing process, improve machine performance, reduce physical labor and improve the working environment, etc..
In the intense mixing process, of course, will bring many new problems, therefore, the mechanical research and design, from the kneading machine system, cooling system, sealing system, feeding technology decisions and pressing system, discharge system, transmission system, control system, main components, material parameters and expected the theory, all need the corresponding development, so that the machine may provide excellent performance, adaptability and adjustment for production process.
The development situation of the mixer in our country is: before liberation, it is blank. After the liberation, the mixer developed gradually. The first manufacturer of mixer in our country is a rubber and plastic machine factory in Dalian. First of all, it has produced PC - 2 140/20L mixer, which is now in 250L, 75/40L mixer. Then Shanghai and other places also gradually produce these machines, such as 250/20/40, 75/30/60, 75/35/70, and 50L mixer. Near - to imitate F series mixer production F080, F160, F270, have been exported. In addition to the Japanese production of flip 50L, 70L mixer. Yiyang rubber machine factory and the introduction of GK series technology from Germany to produce GK series mixer. F series, GK series is the world's two largest series of mixer. Domestic rubber manufacturers have introduced. I have been studying the mixer, pin rotor, pin mixing chamber mixer, etc..
Mixer development direction: "two", "high", "low", that is, large size (large capacity), high power, high speed, high pressure, low unit energy consumption, the main problems: the end of the seal two. ?