Introduction

VITHY? VZTF series Automatic Candle Filter (also called Cake Layer Filter or Self-cleaning Filter) is a new type of pulse-jet cleaning filter. The filter is a fine filtration equipment developed by our R$D team based on traditional similar products. It integrates multiple pipe filter elements inside. It 1) has a unique structure, and it is 2) small, 3) efficient and 4) easy to operate, with 5) low filtration cost and 6) no environmental pollution. Specifically, the filter 1) cleans the filter elements through pulse-jetting the filter cake, 2) runs automatically in a closed environment, 3) has a large filtration area, 4) has a large dirt-holding capacity, and 5) has wide application. The VZTF series Automatic Candle Filter has five functions: direct filtration, pre-coating filtration, slurry concentration, filter cake recovery, and filter cake washing. It can be applied to various complex filtration occasions such as high solid content, viscous liquid, ultra-high precision, and high temperature.

Principle of Operation

VITHY? VZTF Automatic Candle Filter integrates multiple porous cartridges inside a sealed container. The outer surface of the cartridge is covered with a filter cloth. When pre-filtering, the slurry is pumped into the filter. The liquid phase of the slurry goes through the filter medium into the center of the porous cartridge, and then collects to the filtrate outlet and discharges. Before the filter cake forms, the discharged filtrate is returned to the slurry inlet and sent to the filter for circulating filtration until the filter cake forms (when the filtration requirement is met). At this time, a signal is sent to stop the circulating filtration. The filtrate is sent to the next process unit through a three-way valve. Then the filtration begins. After a time, when the filter cake on the porous cartridges reaches a certain thickness, a signal is sent to stop feeding. Then, the residual fluid inside the filter is discharged. And a signal is sent to start pulse-jetting (with compressed air, nitrogen, or saturated steam) to blow the filter cake off. After a time, a signal is sent to stop pulse-jetting and open the filter residue outlet for discharging. After discharge, the outlet is closed. The filter returns to its initial state and is ready for the next round of filtration.

Product Features

■ Automatic control of the whole process

■ Wide range of applications and great filtration effect: Plum blossom-shaped cartridge

■ Smooth operation and reliable performance

■ Low labor intensity: Simple operation; automatically pulse-jetting to clean the filter; automatically unloading the filter residue

■ Low cost and good economic benefit: Filter cakes can be washed, dried, and recycled.

■ No leakage, no pollution, and a clean environment: Airtight filter housing

■ Complete filtration at once

Specifications

Filter Cloth

Industry Cases

■     Filtration of Filter Aids:

Activated carbon, diatomite, perlite, white clay, cellulose, etc.

■     Chemical Industry:

Medical intermediates, filtration, and recovery of catalyst, polyether polyols, PLA, PBAT, PTA, BDO, PVC, PPS, PBSA, PBS, PGA, waste plastics, titanium dioxide, black toner, refining biomass oil from straw, high purity alμmina, glycolide, toluene, melamine, viscose fiber, decolorization of glyphosate, refining brine, chlor-alkali, recovery of polysilicon silicon powder, recovery of lithium carbonate, production of raw material for lithium battery, filtration of solvent oils such as white oil, filtration of crude oil from oil sands, etc.

■     Pharmaceuticals Industry:

Medical engineering, bio-pharmaceutical industry; vitamin, antibiotic, fermentation broth, crystal, mother liquor; decarbonization, suspension, etc.

■     Food Industry:

Saccharifing fructose into solution, alcohol, edible oil, citric acid, lactic acid, lycopene, decarbonization and decolorization of monosodium glutamate; yeast, fine filtration of soy protein, etc.

■     Waste and Circulating Water Treatment:

Heavy metal wastewater (electroplating wastewater, wastewater from circuit board production, hot-dip galvanizing wastewater), battery wastewater, magnetic material wastewater, electrophoresis, etc.

■     Dewaxing, Decolorization, and Fine Filtration of Industrial Oils:

Biodiesel, hydraulic oil, waste oil, mixed oil, base oil, diesel, kerosene, lubricant, transformer oil

■     Dewaxing and Decolorization of Vegetable Oil and Edible Oil:

Crude oil, mixed oil, peanut oil, rapeseed oil, corn oil, sunflower seed oil, soybean oil, salad oil,mustard oil, vegetable oil, tea oil, pressed oil, sesame oil

■     Automotive Electronics:

Abrasive slurry, iron mud, graphene, copper foil, circuit board, glass etching solution

■     Metallic Mineral Smelting:

Lead, zinc, germanium, wolfram, silver, copper, cobalt, etc.