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Continuous Automatic Liquid Filtration

Self-Cleaning Filter Housing with Internal or External Scraper

Incefiltration self-cleaning filter housings automatically remove deposits from a reusable V-slot metal screen while the filtration system remains in service. Internal and external scraper designs reduce manual cleaning, disposable-element use and production interruption in continuous industrial processes.

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Verified Product Data

Filtration RatingUp to 20 µm
Housing Sizes219–800 mm reference range
Operating Pressure0.8 MPa
Filter Element304/316L V-slot slit-type screen

Self-Cleaning Filter Housing Features

Automatic scraper cleaning improves filtration stability and reduces routine maintenance.

Automatic Scraper Cleaning

The scraper removes impurities from the filter screen during filtration.

Continuous Operation

Cleaning can occur without frequent vessel opening or disposable-element replacement.

Lower Maintenance Cost

A reusable screen and automatic cleaning cycle reduce labor and consumable demand.

Low Power Consumption

The supplied sheet lists a reference drive power of 0.37–0.55 kW.

Automatic Drain

Separated solids can be discharged through the lower drain connection.

Reusable V-Slot Screen

The slit-type metal element provides strength and repeated cleaning capability.

PLC / HMI Control

Cleaning can be triggered by time, differential pressure or external process signals.

Product Structure & Technical Introduction

The system combines a motorized scraper drive, stainless steel vessel, V-slot element, HMI cabinet, process nozzles and a drain outlet.

Gear MotorItalian SITI dual-stage gear motor
V-Slot Element304/316L slit-type metal screen
Automatic ControlsHMI cabinet and cleaning logic
DN40 DrainImpurity discharge connection

Verified Technical Data

Housing Size219, 273, 325, 377, 400, 450, 550 and 800 mm
Flow Rate≥1 T/H; custom design according to required flow
Filtration RatingUp to 20 µm
Filter Area≥0.12 m²; customizable
Filter Element304/316L V-SLOT slit-type metal filter element
Housing Material304 or 316L stainless steel
Scraper MaterialPTFE
Sealing MaterialViton / FKM
Operating Pressure0.8 MPa
Inlet / OutletCustomizable diameter and orientation
Drain OutletDN40 flange
Gear MotorItalian SITI dual-stage gear motor

304 / 316L Vessel

Material is selected according to liquid compatibility.

PTFE Scraper

Provides scraper contact with broad chemical compatibility.

Viton / FKM Seal

Reference sealing material from the supplied specification.

Internal vs. External Scraper Filters

Select the structure according to contaminant size, deposit behavior and screen orientation.

Internal Scraper Self-Cleaning Filter

The scraper travels along the inner surface of the cylindrical filter screen and removes deposits collected on the internal wall.

  • Cleans the inside screen surface
  • Suitable for inward deposit formation
  • Automatic cleaning without regular vessel opening
  • Designed for continuous industrial filtration

External Scraper Self-Cleaning Filter

The external scraper removes contaminants from the outside of the screen and is suited to regular cleaning and larger impurity particles.

  • Cleans the outside screen surface
  • Suitable for larger particles
  • Supports continuous filtration and discharge
  • Compatible with automated control systems

Reference Housing Sizes

Eight housing sizes are listed in the supplied product sheet.

219mm housing
273mm housing
325mm housing
377mm housing
400mm housing
450mm housing
550mm housing
800mm housing
Housing diameter alone does not determine capacity. Final screen length, filter area, connection diameter and motor torque must be calculated from flow, viscosity, solids loading and pressure drop.

Control, Drive & Screen Details

Reserved image positions allow real product photographs to be added later.

HMI Control Panel

Add the real image of the touch panel, emergency stop and selector controls.

Gear Motor Assembly

Add a close-up of the motor, gearbox, scraper shaft and pressure accessories.

V-Slot Filter Element

Add internal and external views of the slit-type metal screen.

Self-Cleaning Filter Specifications

Verified product information reorganized from the supplied image.

Item Reference Data Customization / Selection Note
Cleaning Structure Internal scraper or external scraper Select according to contaminant location and filtration direction
Housing Size 219, 273, 325, 377, 400, 450, 550, 800 mm Additional engineered sizes available
Flow Rate ≥1 T/H Designed according to required process flow
Filtration Rating Up to 20 µm Confirm slit opening and required retention performance
Filter Area ≥0.12 m² Screen length and area can be customized
Filter Element 304/316L V-SLOT metal element Slit width and dimensions can be engineered
Housing Material 304 or 316L stainless steel Select by liquid compatibility
Scraper / Seal PTFE scraper / Viton-FKM seal Confirm wear, chemical and temperature compatibility
Operating Pressure 0.8 MPa Final design pressure requires engineering confirmation
Connections Custom inlet/outlet; DN40 flanged drain Connection standard and orientation can match site piping
Drive Italian SITI dual-stage gear motor Voltage, frequency and controls can be configured
Reference Power 0.37–0.55 kW Final power depends on scraper torque and filter size
The image lists “20 µm (max).” The page therefore describes the product as offering filtration ratings up to 20 µm. Final accuracy and clean pressure drop must be confirmed for the selected screen.

Internal vs. External Scraper Comparison

An initial guide for selecting the correct cleaning configuration.

Internal Scraper

Cleaning SurfaceInside of the filter screen
Deposit PositionInternal cylindrical surface
Typical SolidsAdhering deposits and suspended impurities
Main BenefitDirect internal screen cleaning

External Scraper

Cleaning SurfaceOutside of the filter screen
Deposit PositionExternal cylindrical surface
Typical SolidsLarger particles and regularly accumulating deposits
Main BenefitEffective external deposit removal

Typical Self-Cleaning Filter Applications

Automatic scraper filters are designed for continuous processes with recurring solids loading.

Petrochemical

Process liquids, oils, cooling water and compatible hydrocarbon streams.

Fine Chemicals

Resins, solvents, acids, alkalis and specialty chemicals.

Electric Power

Cooling water and utility-water filtration.

Papermaking

White water, coatings, additives and fiber-containing liquids.

Water Treatment

Industrial water, cooling loops and wastewater reuse.

Automotive

Pretreatment and circulation-liquid filtration.

Coatings

Paint, ink, resin and coating-process filtration.

Electronics

Compatible process-water and chemical filtration.

How to Select a Self-Cleaning Filter Housing

Reliable sizing begins with real liquid and contaminant data.

Characterize the Liquid

Provide composition, viscosity, density, temperature and corrosion conditions.

Analyze the Solids

Confirm particle size, hardness, shape, concentration and stickiness.

Select Scraper Type

Choose internal or external cleaning based on deposit location.

Confirm Automation

Specify flow, pressure, connections, motor voltage, drain logic and PLC signals.

Need Automatic Filtration for Continuous Operation?

Send your liquid, flow, viscosity, solids loading, filtration accuracy, pressure and control requirements.

Request Engineering Proposal

Self-Cleaning Filter Housing FAQ

Common questions before selecting an automatic scraper filter.

What is a self-cleaning filter housing?

It is an automatic filtration vessel that uses a scraper to remove deposits from a reusable metal screen.

What is the difference between internal and external scraper filters?

An internal scraper cleans the inner screen surface, while an external scraper cleans the outer surface.

What filtration rating is available?

The supplied sheet lists filtration ratings up to 20 µm.

What materials are used?

The reference design uses a 304 or 316L housing and V-slot element, PTFE scraper and Viton/FKM seal.

How is cleaning controlled?

Cleaning can be initiated by time, differential pressure, manual command or PLC/process signals.

Can connections and flow be customized?

Yes. The inlet, outlet, filter area and overall design can be engineered for the required flow.

Request a Self-Cleaning Filter Quote

Complete the process information below for an engineering proposal.