G4 Coarse Efficiency Winding Filtration Equipment - High-Quality China Suppliers & Factory Solutions
Main Structural Components
Filter Media: Usually made of synthetic non-woven fabric, fiberglass, or activated carbon composite media, formed into a roll. The media has uniform grid lines for strength support and sensing control.
Upper / Lower Roller Shafts: The roll of clean filter media is installed on the upper shaft. The used, dirty media is collected on the lower shaft.
Filter Section: The media is drawn from the upper shaft, passes vertically or horizontally through the equipment frame to form an effective filtering surface, and is then wound onto the lower shaft.
Motor: Provides power to drive the rotation of the lower shaft, winding the media.
Control System — triggers media replacement via:
🔵 Differential Pressure Control (Most Common): Pressure sensors on both sides of the media automatically start the motor when resistance reaches a preset value (e.g., 100–150 Pa).
🔵 Timer Control: Media is replaced periodically at fixed intervals (e.g., once a week) based on experience.
🔵 Manual Control: A manual button on the control panel forces media replacement.
Made of metal (such as galvanized steel sheet, aluminum alloy) to support all internal components and provide interfaces for duct connections. Requires sturdy structure and good sealing.
Inspection Window: Allows visual inspection of the media's dirt level and remaining quantity.
Alarm Device: Emits audible and visual alarms when the media is nearly exhausted or the equipment malfunctions.
- Initial State: New, clean filter media is drawn from the upper shaft, covering the entire filter face, with its end fixed to the lower shaft.
- Normal Filtration: Dust-laden air passes through the media; dust is captured on the media surface, and clean air enters downstream equipment or the space. As filtration proceeds, dust accumulates on the media surface, gradually increasing airflow resistance and causing the pressure differential across the media to rise.
- Automatic Start: When the differential pressure reaches the preset "start value," the pressure sensor sends a signal to the controller.
- Rolling Update: The controller starts the motor, driving the lower shaft to rotate. This winds up the dirty media while simultaneously pulling a corresponding length of clean media from the upper shaft. This process typically lasts from a few seconds to several tens of seconds.
- Automatic Stop: After the media is updated, the controller stops the motor either when the differential pressure drops to the "initial value" or after the motor has run for a preset fixed duration.
- Cycle and Alarm: This process repeats cyclically until the media on the upper shaft is fully used up. At this point, the control system triggers a "media exhausted" alarm, prompting maintenance personnel to replace the media roll.
📝 Remarks: (1) Initial resistance tolerance of ± 10% (2) Support customer size