At present, the filter presses on the market are divided into a variety of uses and models, and the functions of the filter presses of different models are different, and the roles they play in the work are also different. Among them, the most widely used are the box type filter press and the frame filter press. It is understood that food, chemical, pharmaceutical, oil refining, sewage treatment and other industries need to use van and frame filter equipment to separate solids and liquids.

Box type filter presses and plate and frame filter presses are all "darling", but they also have their own characteristics.

Plate and frame filter presses have a layered plate type filter plate, so the overall weight is lighter and easier to replace and move. In addition, its filtration speed is faster than that of the chamber filter press, and the filter cake storage space is also relatively large, and the plate-frame filter press filter cloth can better form a uniform pressure difference, making the filter cloth and the filter fluid energy maximum. The limited contact ensures a better filter area. And there is enough space on both sides of the filter cloth to form an effective pressure difference, thereby improving the efficiency of the frame filter press.

Compared with the frame filter press, the superior technology is the biggest advantage of the chamber filter press, with less loss when feeding, high temperature and high pressure, good sealing performance, uniform cake washing, low water content, and each The pressure in the filter chamber is not easy to be bad, which is basically suitable for all solid-liquid separation industries and other characteristics. However, there are also disadvantages such as low efficiency, poor filtering effect, and easy filter plate deterioration.

From the overall view of the filter press industry, the contradiction between the filter press equipment market in China has become increasingly prominent in recent years. First of all, due to the relatively late start of China's filter press industry, no effective industry management mechanism has been established so far, leading to mixed industry as a whole, and the overall industry development level cannot be improved. Second, although there are many domestic filter press manufacturers, most of the companies with independent research and development capabilities have no new product development capabilities and production technologies.

Experts said that the future development of filter press equipment is more difficult, and the road to development and survival must adapt to the following trends. First of all, the filter press equipment must adapt to the changing trend of market development, seize the direction of the market, and better think for the customer. Secondly, we must improve the overall performance of the equipment. In addition to ensuring the stable operation of the equipment and improving the filtering effect, we must further improve the automation, humanization, convenience, and green of the equipment. It includes energy-saving equipment, low energy consumption, environmental protection and pollution-free, to ensure that the equipment will not cause secondary hazards during operation, and at the same time to achieve filter drying, reduce filter cake moisture, vigorously innovate in drying, breaking the traditional pressure filter Machine development bottleneck.

The author believes that under the current background of increasing green environmental protection, China's filter press companies should make full use of the advanced achievements of modern science and technology, focusing on new products that are urgently needed for the development of national economy and national defense, and improve the quality and technological level of existing products. The development of filter press equipment that is urgently needed by industries such as food, pharmaceuticals, and urban sewage treatment will form a new growth point.

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