Vacuum drum filter

The vacuum drum filter is a continuous vacuum filtration equipment, which has the characteristics of continuous filtration, washing, drying, high automation, small footprint, and strong adaptability to materials. It is widely used in various fields such as petroleum, chemical, metallurgical, pharmaceutical, sugar, starch, food, papermaking, and sewage treatment that require solid-liquid separation. The vacuum drum filter produced has three series: scraper discharge, folding belt discharge, and pre coating filtration. The models are complete, the specifications are diverse, the technology is advanced, the quality is superior, the structure is reasonable, the processing capacity is large, the degree of automation is high, and the performance is stable and reliable. It is an ideal equipment for suspension separation. The external filter drum vacuum filter produced by our company is a new type of solid-liquid separation equipment independently developed by digesting and absorbing advanced foreign technologies, and its main technical indicators have reached the international advanced level. According to the unloading method, it can be divided into four types: scraper unloading, folding belt unloading, roller unloading, and pre coating unloading. Classified by material, it is divided into five types: carbon steel, cast iron, rubber lining, plastic, stainless steel, etc. Our company can produce a series of products with various specifications ranging from 1 ㎡ to 80 ㎡, and can provide various supporting auxiliary equipment such as automatic gas-liquid separators and vacuum pumps. We can conduct material testing and process design for customers.

working principle

The drum is partially immersed in the slurry and driven by a motor to rotate. The filtering chamber is connected to a vacuum source, and the filtrate flows out through the filter cloth and suction tube through the distribution head. Solid particles are trapped on the surface of the filter cloth to form a filter cake. After the filter cake is transferred out of the liquid level, it begins to dry once and then be washed. The washing solution sprayed onto the filter cake passes through the filter cake and filter cloth, passes through the suction filter tube and the flow distribution head, and enters the steam water separator through the connecting tube for automatic discharge. According to the requirements, the washing solution can be exported separately or together with the filtrate. As the drum rotates, the washed filter cake is dehydrated under vacuum suction, undergoes secondary drying, and then transferred to the discharge area. After nitrogen back blowing, the filter cloth bulges, and the filter cake is discharged by the scraper device. Once one cycle is completed, it enters the next cycle. Stir continuously or intermittently in the storage tank to prevent solid particles from settling in the slurry.

Performance Characteristics

1. The equipment has a compact structure and occupies a small area.

2. Multiple sets of scrapers are used for flexible adjustment.

3. Half tube jacket type material tray, safe and reliable.

4. Widely applicable, easy to operate, and flexible.

5. Multiple drum configurations are available.

6. One machine with multiple functions, capable of drying or cooling connectors.