Automatic external scraper filter is a kind of precision equipment for removing impurities on the surface of the filter screen online by mechanical scraping, which is suitable for continuous filtration of high-viscosity liquids (such as adhesives, coatings, syrup, etc.). Its core structure includes a stainless steel wedge-shaped filter, a rotary scraper system, a drive motor and an intelligent control system, which can realize automatic removal and sewage discharge of impurities without the need to replace the filter element or manual intervention

 Peculiarity:

  1. Fully automatic operation: support differential pressure, timing or manual cleaning mode, differential pressure trigger priority.

  2. Efficient cleaning: The metal scraper is attached to the filter screen to avoid impurities being squeezed and broken, and the cleaning is thorough.

  3. Wide applicability: It can handle liquids with viscosity up to 800,000 centipoise, and the accuracy range is 25–3000 microns.

  4. Closed design: prevent the leakage of hazardous materials and ensure production safety.

  5. Low maintenance cost: no consumables replacement, reducing downtime and environmental protection costs.

1. Filtration stage: The liquid flows from the outside of the filter to the inside, and the impurities are trapped on the outer surface by the wedge-shaped filter.

2. Scraping and cleaning: When the pressure difference or time reaches the set value, the geared motor drives the scraper to rotate close to the filter screen to scrape off the surface impurities.

3. Automatic sewage discharge: impurities fall into the bottom collection cavity and are discharged regularly through the electric/pneumatic valve, and the filtration process is not interrupted.

1. Installation connection: access the pipeline according to the inlet and outlet identification to ensure sealing.

2. Parameter setting: set the differential pressure threshold (such as 0.04MPa), cleaning cycle and sewage discharge time through the control box.

3. Start operation: Turn on the power supply, the system will automatically enter the filtering mode and monitor the pressure difference in real time.

4. Maintenance inspection: Regularly clean the collection cavity to verify the wear degree of the scraper and the integrity of the filter screen.

1. Chemical industry: impurity separation of viscous liquids such as resins, adhesives, inks, polymers, etc.

2. Food and pharmaceutical: filtration and purity improvement of syrup, honey, chocolate and liquid medicine.

3. Environmental protection water treatment: industrial circulating water, seawater desalination pretreatment, membrane system protection.

4. Other fields: precision filtration of high-viscosity media such as lubricating oil, fuel oil, and cosmetic raw materials.

Automatic on-line continuous filtration
Reduce labor costs, in line with requirements  of factory automation operation
No time disposable filter media
Material cost savings and environmental  disposal costs
Filter minimal pressure loss, flow stability
Fully enclosed filter
Emissions of waste and recyclable high  impurity concentration
To avoid the loss of high-value materials
Variety of module combination and automation mode

Filter body:CS\stainless steel SS304\SS316L  withstand corrosive acid solution,SS316L  stainless steel strainer better performance  SS304/SS316L
Shaft seal:PTFE Teflon, applicable to all types  of liquid solvents and PH, the maximum  temperature 230℃
Seal:NBR NBR, suitable for most neutral and  oily liquids, the maximum temperature 120℃
VITONFKM: tolerance PH fluids and most  solvents, maximum temperature 230℃
Scraper:S2 type of ultra-resistant synthetic  materials,S3 type of durable stainless steel blade
Tripod: Stainless steelSS304