Development History of High Plan Sifter-2

Development History of High Plan Sifter-2

  Edited by: www.immy.cn  www.immyhitech.com

Continue with last article of Development History of High Plan Sifter-1

The development of China's high square flat screen can be roughly divided into four stages.

The first stage: since the 1950s, China copied the foreign four-bin wooden sieve box high square sieve, and use this wooden sieve box for flour industrial production. The advantages of wooden sieve box are good toughness, not easy to break, for the flour production at that time, its strength can meet the demand. However, due to the production of sieve boxes at that time, the drying of wood is not qualified to lead to the use of easy deformation, and at the same time, the level of industrialisation was low, many places are still in the handmade, so the equipment precision is poor, the service life is shorter [2] .

The second stage: with the research of high square flat screen, high square flat screen manufacturers began to use cast iron, angle steel and other metal parts to strengthen the weak parts of the screen box, high square flat screen frame gradually formed a mixture of metal and wood materials used in the structure. After improvement, the service life of high square flat sieve increased significantly, but it still has a lot of shortcomings, such as poor sealing between the sieve box, the local force of the metal parts are easy to fracture and so on.

The third stage: in the 1980s, the high square screen box and drive frame were changed to steel welded structure, the screen grid is only set up in the inner channel, the outer channel is replaced by the cavity formed by the screen box and the screen grid. The form of the screen grid is more simple, and after continuous improvement, the service life of the equipment and sealing have been greatly improved.

The fourth stage: into the 21st century with the development of industry, the domestic major equipment manufacturing enterprises to produce high square flat sieve products in the material and structure is more reasonable, service life, sealing performance and other aspects of the basic to meet the production needs of large-scale flour mills. Like COFCO Zhangjiakou company produced high square flat sieve because of its long service life, good sealing, easy to operate and other advantages has been evaluated by the China Cereals and Oils Society as ‘the whole machine technology to reach the international leading level'.

With the improvement of the level of intelligence, automatic temperature measurement system, automatic operation monitoring system and other intelligent control is also gradually applied in the High Plan sifter.

3. Future direction of development of high square flat screen

3.1 Modularity

The modular design of high square flat screen is a method of separating the components of high square flat screen into several modules, so as to facilitate the production, transport and maintenance. Modular design makes the manufacture of high square flat screen becomes more flexible, can be increased or reduced by the module to adapt to different process needs. 

Compared to traditional monolithic designs, modularity simplifies the manufacturing process, reduces costs, and better meets customer needs, as each bin can be assembled independently of the other, allowing for assembly line production. This improves manufacturing efficiency and quality control, and allows for individual maintenance and replacement when necessary. 

This structural design also has the advantage of facilitating process changes. Since the modules of the high square flat screen can be assembled independently, it is possible to make changes to certain modules as needed without redesigning and remanufacturing the entire high square flat screen, which means that the components can be quickly updated in the event of a process change, reducing production costs and time costs. In short, the modular design of high square flat screen is a model of modern manufacturing technology, with the advantages of sustainability, reusability and maintainability, which can provide more choices and development space for the production of high square flat screen and customer demand in the future.

3.2 Lightweight design

The lightweight structure design of high square flat screen is to achieve weight reduction and consumption reduction on the basis of maintaining the screening capacity. The main idea is to optimise the structure of the screen body to use lightweight materials to achieve the purpose of reducing weight and consumption on the basis of ensuring the operating strength of the equipment.

Among them, special aluminium alloy material is a good choice, it has good strength and toughness, and is lighter than traditional steel. Special aluminium alloy screen box frames are also a common lightweight structural design. Compared with the traditional steel screen box frame, the aluminium alloy frame has a smaller self-weight, which can achieve better weight reduction, and also has higher corrosion resistance and longer service life.

3.3 Application of polymer materials

Low-density food composite materials have the advantages of low density, high wear resistance, safety and environmental protection. 

Therefore, it has a great advantage to be applied on the sieve grid. First of all, the density is light to reduce the energy consumption of equipment operation, to achieve the purpose of energy saving and emission reduction; secondly, the wear resistance can protect the sieving food from damage and pollution; in addition, the waterproof and aging resistance performance is good, and it can be widely used in the chemical industry which needs to clean the sieve lattice on a regular basis; finally, the casting performance is good, and the sieve lattice can be cast in its entirety to ensure that there is no so-called ‘ dead corner’, and the sieving lattice has no ‘dead corner’. dead corners’, better sieving effect.

4. Future direction of development of high square flat screen

Conclusion

The development of high square flat screen mainly focuses on screening efficiency, screen exhaustion rate, energy consumption and maintenance cost. With the continuous progress of science and technology and changes in industrial demand, the future of high square flat screen will continue to develop and improve. Overall, the high square flat screen is constantly developing and expanding in technological innovation and optimisation to meet the market demand for efficient, energy-saving and low-cost screening equipment.