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The advantages of horizontal vacuum belt filter

First, the development and application
Horizontal belt vacuum filter is developed in the eighties a high degree of automation of the filter separation equipment. Horizontal belt vacuum filter with filter cloth or filter as a filter medium, make full use of the gravity of the material, relying on vacuum negative pressure as the driving force to achieve solid-liquid separation of high efficiency separation equipment; Horizontal belt vacuum filter design is unique, can be used for filtration Which can be used in many aspects, including washing, vibration, hot air drying and mechanical extrusion, to solve many problems in the chemical industry, the level of belt vacuum filter after years of improvement and improvement, has been widely used in environmental protection, mine 1 , Chemical, fertilizer, paper, food, pharmaceutical and metallurgical industries.
Second, the advantages of products 
1, the filtration efficiency is high, because the horizontal filter surface on the form of feeding, the large particles in the slurry because the sedimentation rate is greater than the fine particles so it quickly settles on the filter surface to form a layer of high permeability of the initial filter layer. The primary filter layer of small resistance, fine particles and played a certain role in the capture, so that the filter cake layer structure is reasonable. But also reduces the small particles caused by the filter cloth blocking, and thus filter the resistance is small, high filtration efficiency, high clarity of the filtrate.
2, the filter cake washing effect is good, the horizontal arrangement of the filter surface formed on the filter cake thickness is more uniform, and the washing liquid on the filter cake evenly distributed, thereby improving the filter cake replacement washing efficiency. As the filter surface is a relatively long strip, you can easily achieve multi-level downstream or countercurrent washing, thereby improving the efficiency of the filter cake and get as high as possible lotion concentration.
3, the thickness of the filter cake can be easily used to increase the amount of feeding and the speed of the filter to adjust the performance of the material filter to adapt to the good.
4, long and narrow shape of the filter surface, you can easily adjust the filter area, washing area, suction area length distribution, to achieve the optimization process. And the recovery of the filtrate and lotion can be strictly separated as required, or the length of the suction zone can be shortened or lengthened by the moisture content of the filter cake.
5, according to the filter, washing, suction area on the vacuum requirements, in different regions to provide different degrees of vacuum. For example, in the filtration zone, the use of high vacuum in the washing area to improve the filtration and washing rate, while in the suction zone to provide a lower degree of vacuum and as much as possible ventilation to reduce the wet weight of the filter cake.
6, the filter filter cloth in each work cycle can be carried out after the two sides of the spray washing, if necessary, can also increase the roll rinse washing. So the filter cloth regeneration effect is good, both to extend the life of the filter cloth, but also improve the production capacity of the equipment, which in the treatment of small cake cake resistance material is very obvious.
7, according to the characteristics of materials and process requirements, the variant design to meet the different requirements. For example, for the filter cake has a certain degree of compressibility and requires the cake moisture content as low as possible when you can increase the squeeze roller, squeeze plate and other additional devices to reduce the moisture content of cake. When the moisture content of the filter cake is high, it is possible to add a hot hood and far-infrared drying device to the dry area.
For the clarity of the filtrate demanding, the purity of the filter cake is not required, you can use the pre-coating operation to improve the clarity of the mother liquor. When the clarity of the filtrate is high and no other solid phase is allowed to be added to the filter cake, a part of the filtrate may be used or a lower degree of vacuum may be used in the initial stage of the feed or a predetermined settling zone may be used to form the primary filter To improve the clarity of the filtrate.
For volatile, flammable, explosive or toxic materials, the use of fully enclosed or inert gas circulation process. For volatile or material difficult to filter or low atmospheric pressure in the high altitude operation, you can also design a fully enclosed pressure operation, the working pressure at this time up to 2-3 bar.
Horizontal vacuum belt filter is because of the above characteristics, so the current application is very wide, its main drawback is compared with the vacuum drum filter and vacuum butterfly filter, covers an area of ​​?? large, the cost is relatively high However, due to recent years To the rubber industry to improve the level of technology, equipment costs have a more substantial decline.

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