Fully automatic filter

　　Intelligent Automatic Control Filter

　　The YJDS brush-type self-cleaning filter (also known as the intelligent automatic filter) is suitable for a wide range of water supply systems, particularly those that require continuous operation without downtime. This filter effectively removes various mechanical impurities from the water system, ensuring the safe and reliable operation of system equipment. It automatically monitors the filter’s operating status by measuring the pressure differential between the inlet and outlet, thereby achieving true automatic detection, automatic cleaning, and automatic sludge discharge.

　　Working Principle

　　The YJDS-type brush-type self-cleaning filter primarily comprises a housing, a filter cartridge (for trapping contaminants), a cleaning mechanism (including a cleaning brush and a brush-mounted filter screen), a controller (which collects and compares differential pressure signals and outputs control signals), a cleaning motor (which receives control signals and provides the power required by the cleaning mechanism), and an electric ball valve (which receives control signals and discharges the collected contaminants).

　　The brush-type self-cleaning filter consists of a pig-bristle brush or a stainless-steel wire brush, a stainless-steel filter screen, and drive components. Cleaning and sludge discharge are automatically performed by a drive motor and an electric valve. The filter can operate in automatic mode (with optional manual operation) and features both differential-pressure-based and timed automatic sludge-discharge functions. The automation system is implemented using a PLC programmable controller.

　　As water flows through the filter, mechanical impurities are intercepted by the filter screen. When the accumulated impurities on the screen surface increase and the differential pressure reaches 0.04 MPa, the differential-pressure switch sends a signal, which in turn triggers the PLC to issue a command. The drive motor then starts, the drain valve opens, and the rotating brushes dislodge the accumulated impurities from the screen, flushing them out through the drain outlet. The entire brushing-and-draining process requires no manual intervention and does not necessitate shutting down the system. In addition, the equipment is equipped with both timed cleaning and manual cleaning functions, ensuring safe and reliable effluent quality under all operating conditions. In this way, the YJDS-type brush-type self-cleaning filter enables the system to maintain effective filtration without interruption, thereby guaranteeing the normal operation of the entire system.

　　Characteristics

　　1. Fully automatic operation: After initial parameter setup, the YJDS automatically monitors the inlet–outlet pressure differential, cleans the filter screen, and discharges sludge, truly enabling unattended operation.

　　2. Precision and Reliability: The core component of the YJDS—its differential pressure controller—is sourced from a leading international brand, offering highly accurate measurement and dependable control to prevent equipment malfunctions or unnecessary shutdowns caused by measurement or control errors.

　　3. Reasonable configuration: Using an electric ball valve as the drain valve eliminates issues such as poor shut-off and inconsistent performance, while also preventing excessive system pressure caused by the solenoid valve opening too rapidly.

　　4. Advanced Design: The YJDS incorporates cutting-edge automatic filtration technology and features a unique dual-action brushing-and-suction design that effectively removes contaminants.

　　5. Multiple Self-Protection Features: The controller is equipped with a maximum operating-time protection function. In the event of a malfunction that causes the filter to become severely clogged with large, non-removable foreign particles, resulting in excessive pressure loss and prolonged continuous cleaning and drainage, the duration of the cleaning cycle can be manually set as needed.

　　6. Precision Manufacturing: A stringent quality assurance system, coupled with meticulous organization and precision manufacturing, ensures that YJDS delivers high-quality performance and exceptional service life—over 15 years for the main unit and over 20 years for the auxiliary unit.

　　7. High degree of automation: Equipped with standard communication interfaces for integration with any monitoring network.

　　Technical Specifications

　　Working pressure: ≤2.5 MPa; Set differential pressure range: 0–69 kPa

　　Operating temperature: ≤150℃ Motor power: 180–750 W

　　Cleaning time: arbitrarily set; Filtration accuracy: 4–25 mesh/in

　　Pressure loss: 2.0–8.0 kPa