Scraper-Type Self-Cleaning Filter

Our Scraper-Type Self-Cleaning Filter is a high-efficiency industrial filtration solution designed for continuous fluid purification, specifically engineered to address the core pain points of traditional filters—frequent manual cleaning, unexpected production downtime, high labor costs, and rapid consumable wear. Adopting a mechanical scraping cleaning mechanism, the filter is equipped with a precision-machined scraper blade that closely fits the filter screen. It automatically triggers the scraping and sewage discharge process in real time when impurities accumulate, achieving online non-stop cleaning without interrupting normal fluid supply.

This scraper-type filter efficiently intercepts suspended solids, particulate impurities, sludge, and fibrous contaminants in water, oil, chemical liquids, and high-viscosity media. It protects downstream pipelines, valves, pumps, and precision equipment from wear, blockage, and corrosion, ensuring the stability and continuity of industrial production, municipal water supply, and environmental protection systems. With a robust mechanical structure, high adaptability to harsh working conditions, and low maintenance requirements, it is an ideal choice for fluid filtration scenarios that demand long-term uninterrupted operation and high impurity load.

Technical Features

The Scraper-Type Self-Cleaning Filter integrates mature mechanical transmission and intelligent control technologies, with core technical advantages centered on its efficient scraping mechanism. Below are its key technical features and core parameters:

Core Technical Advantages

High-Efficiency Scraping Cleaning Mechanism

The scraper blade is custom-machined to closely fit the surface of the stainless steel filter screen, realizing 360° full coverage scraping. It thoroughly removes stubborn impurities (such as sludge, fibers, and granular solids) that are difficult to clean with conventional suction-type filters, ensuring consistent filtration efficiency without degradation over time.

Intelligent Multi-Mode Control

Equipped with a high-sensitivity differential pressure sensor and PLC control system, the filter supports three control modes: differential pressure control (automatic cleaning when pressure difference reaches the set value), timing control (regular cleaning as scheduled), and manual control (on-demand operation). It enables 24/7 unattended stable operation with zero manual intervention during normal work.

High-Strength Wear-Resistant Components

The scraper blade is made of wear-resistant alloy steel (or custom PTFE material for corrosive media), with excellent toughness and wear resistance to adapt to long-term high-load scraping. The filter screen uses 304/316L stainless steel wedge wire or woven mesh, featuring high structural strength, corrosion resistance, and a long service life of 3–5 years under normal working conditions.

Compact & Durable Structural Design

The whole machine adopts an integrated structural design with a compact layout, suitable for horizontal, vertical, and right-angle pipeline installations. The main body is made of carbon steel (anti-corrosion spray coating) or stainless steel, adapting to high pressure, high temperature, weak acid/alkali, and high-humidity harsh working environments, with zero leakage and long-term operational stability.

Low Energy Consumption & Easy Maintenance

The scraper drive device uses a low-power motor, with low energy consumption during operation. The cleaning process only consumes a small amount of fluid, minimizing medium waste. The mechanical structure has few wearing parts, and daily maintenance only requires regular inspection of the scraper blade and control system, with simple disassembly and replacement.

Core Technical Parameter Table

Product Advantages

Compared with traditional bag filters, cartridge filters, and suction-type self-cleaning filters, our Scraper-Type Self-Cleaning Filter has distinct comprehensive advantages, especially suitable for working conditions with high impurity content, viscous media, or frequent blockage:

Thorough Cleaning, No Efficiency Decay

The mechanical scraping action directly contacts the filter screen to remove impurities, solving the problem of "residual dirt" in suction-type filters. It maintains stable filtration efficiency for a long time, avoiding equipment performance degradation caused by prolonged use.

No Consumable Costs, Lower Operating Expenses

Unlike filter bags or cartridges that need frequent replacement, the scraper-type filter only relies on mechanical scraping for cleaning, eliminating consumable replacement costs. It greatly reduces long-term operation and maintenance expenses for overseas customers.

Wide Media Adaptability

It is suitable for filtering high-viscosity liquids (such as crude oil, chemical slurries), high-sediment media (such as river water, industrial wastewater), and fibrous contaminants (such as paper pulp, food processing liquids). It outperforms suction-type filters in handling complex and difficult-to-filter media.

Reduce Downtime, Improve Production Efficiency

Online non-stop cleaning ensures continuous fluid supply and production, avoiding shutdown losses caused by manual filter cleaning. It is especially suitable for industrial production lines that cannot be interrupted (such as chemical, power, and metallurgical industries).

Eco-Friendly & Compliant with International Standards

The closed cleaning process discharges minimal wastewater, reducing environmental pollution. The product design complies with ISO industrial equipment standards, meeting the safety and environmental protection requirements of overseas markets such as Europe, North America, and Southeast Asia.

Application Fields

Our Scraper-Type Self-Cleaning Filter is widely used in fluid filtration scenarios requiring high cleaning efficiency and strong impurity resistance, covering multiple industrial and municipal fields:

Chemical & Petrochemical Industry

Filtration of chemical raw material liquids, crude oil, lubricating oil, and chemical slurries; protects pumps, valves, and reaction equipment from blockage and wear, ensuring stable production processes.

Metallurgical & Steel Industry

Circulating cooling water filtration, ironmaking/steelmaking wastewater treatment, and slag water filtration; removes high-concentration sediment and metal particles to extend the service life of blast furnaces and cooling systems.

Power Industry

Boiler makeup water filtration, desulfurization wastewater treatment, and cooling water purification for thermal power/biomass power plants; prevents pipeline scaling and equipment blockage.

Food & Beverage Industry

Purification of production water, fruit juice, syrup, and edible oil; meets food-grade hygiene standards, avoids impurity contamination of products, and handles fibrous impurities in food processing liquids.

Municipal & Environmental Engineering

River water pretreatment, sewage plant effluent filtration, and rainwater recycling; removes high-content sediment and suspended solids to improve water reuse efficiency.

Agricultural & Irrigation Engineering

Farmland irrigation water filtration, drip irrigation/sprinkler irrigation nozzle protection; removes sediment and debris to prevent nozzle blockage and improve irrigation efficiency.

Marine & Offshore Engineering

Seawater pretreatment for desalination projects, marine pipeline cooling water filtration; resists corrosion and removes marine organisms and suspended solids.

Frequently Asked Questions (FAQ)

Q1: How effective is the scraper blade in removing stubborn impurities (e.g., sludge, fibers)?

A: The scraper blade is precision-machined to closely fit the filter screen, realizing 360° full-contact scraping. It can thoroughly remove stubborn impurities such as sludge, fibers, and granular solids that are difficult to clean with suction-type filters. After long-term testing, the filtration efficiency remains above 95% even under high-impurity load conditions, with no obvious decay.

Q2: What is the service life of the scraper blade, and how to replace it?

A: The standard scraper blade (made of wear-resistant alloy steel) has a service life of 1–2 years under normal working conditions. For corrosive media, we provide PTFE or stainless steel scraper blades as an alternative. Replacement is simple: the filter is designed with a quick-opening maintenance port, and ordinary maintenance personnel can complete the replacement within 30 minutes without professional tools. We also provide detailed replacement manuals and spare parts supply support.

Q3: Is this filter suitable for high-viscosity media (e.g., chemical slurries, crude oil)?

A: Yes. Our scraper-type filter is specially optimized for high-viscosity media. The mechanical scraping mechanism can effectively scrape off viscous impurities attached to the filter screen, avoiding the problem of "screen adhesion" that plagues conventional filters. We can customize the scraper speed and drive power according to the viscosity of the media to ensure optimal cleaning effect.

Q4: Does the filter support customization for special working conditions (e.g., high pressure, corrosive media)?

A: Yes. We provide full customization services for overseas customers, including filtration precision, flow rate, pipeline diameter, scraper material (alloy steel/PTFE), filter material (304/316L stainless steel/carbon steel), and control voltage (110V/60Hz for North America, 220V/50Hz for Europe/Asia). We can also design dedicated scraper structures for special working conditions such as high pressure (max 1.6MPa) and strong corrosion.

Q5: What after-sales service do you provide for overseas customers?

A: We offer a 12-month standard warranty for the whole machine (excluding wearing parts such as scraper blades). For overseas customers, we provide remote technical guidance via video/phone, and can arrange on-site installation and commissioning services in major regions (Europe, North America, Southeast Asia, etc.). We also maintain a spare parts inventory in overseas warehouses to ensure fast delivery of spare parts and minimize customer downtime.

Right Angle Self-Cleaning Filter