DATE：2026-05-18
1. What is a Vacuum Filter
A vacuum filter is an industrial solid-liquid separation equipment driven by negative vacuum pressure.
Under stable vacuum suction force, liquid penetrates the filter medium while solid particles, impurities and crystals are intercepted. It realizes efficient clarification, purification, dehydration and complete solid-liquid separation.
Compared with traditional filtering equipment, vacuum filtration features faster processing speed, stable pressure difference and lower material loss, which is a reliable continuous filtration solution for modern industrial production.
2. Manufacturing & Production Process
The whole equipment manufacturing is divided into filter element production and machine assembly.
2.1 Filter Element Production
Sintered Metal Filter (Main Type)
1. Material selection: high-quality 304 / 316L stainless steel wire mesh and fiber felt
2. Multi-layer lamination: protective layer + filter layer + dispersion layer + support layer
3. Vacuum sintering: sintered at 1100–1300℃ in high-temperature vacuum furnace
Improves overall strength, corrosion resistance and structural stability through molecular combination.
4. Finishing processing: cutting, rolling, welding and shaping into standard filter cartridges and filter plates.
Non-metallic Filter Media (Food & Laboratory Grade)
- Filter paper & filter membrane: made of cellulose, PP, PTFE with precise cutting and sealing
- Filter cloth: polyester & polypropylene material, woven, shaped and tailored for industrial filtration
2.2 Complete Machine Assembly (Vacuum Belt Filter Standard)
1. Frame: carbon steel or stainless steel welding with anti-corrosion treatment
2. Vacuum system: vacuum tank, pipeline and vacuum pump (water-ring / dry type)
3. Filtration unit: rubber belt, filter cloth, driving, deviation correction and tensioning system
4. Control system: PLC, instruments and valves, supporting automatic continuous filtering, washing, drying and discharging
5. Sealing treatment: professional sealing for all connections, maintaining stable vacuum degree of 0.04–0.07 MPa
3. Application Industries
Vacuum filters are widely used in almost all industries requiring solid-liquid separation.
3.1 Food & Beverage (Sanitary Grade)
- Clarification and sterilization for juice, beer and wine
- Impurity removal and decolorization for syrup and edible oil
- Whey separation and protein concentration for dairy products
3.2 Pharmaceutical Industry (High Purity & Sterile Grade)
- Purification, crystallization filtering and washing for API and pharmaceutical intermediates
- Bacteria & pyrogen removal for purified water and liquid medicine
- Concentration and recovery of antibiotics and enzyme preparations
3.3 Chemical Industry (Corrosion-resistant & Precision Filtration)
- Reaction liquid separation and catalyst recovery for fine chemicals
- Filtering, washing and dehydration for dyes and pigments
- Purification and residue removal for industrial solvents
3.4 Mining & Metallurgy (Large Capacity Dehydration)
- Concentrate dehydration and tailings dry stacking for iron, copper and lithium ore
- Red mud separation for alumina industry
- Leachate filtering and precious metal recovery
3.5 Environmental Protection & Water Treatment
- Sludge dewatering and volume reduction for municipal and industrial sewage
- Heavy metal and suspended substance removal for electroplating & chemical wastewater
- Gypsum dehydration for flue gas desulfurization (FGD) in power plants
3.6 Other Industries
- Paper industry: pulp concentration and black liquor extraction
- Coal industry: coal slime water treatment and clean coal dehydration
- Biotechnology: fermentation liquid filtration and bacteria separation
4. Core Advantages
- High efficiency: negative pressure driving enables fast and continuous filtration
- Dry filter cake: low moisture content (mining industry ＜20%), easy for transportation and stacking
- Wide applicability: available from laboratory small test to large-scale industrial production
- Easy maintenance: replaceable filter cloth and filter elements, low operation cost
5. Commercial Highlights
Factory direct supply, full specification support, customized design according to working conditions.
Stable performance, sanitary structure, energy saving and durable.
Ideal filtration equipment for global industrial enterprises.
