The Pressure Leaf Filter is a fully enclosed, highly efficient liquid filtration system engineered for applications requiring large filtration areas and the recovery of dry solid cakes. Utilizing robust stainless steel filter leaves housed within a pressurized vessel, this equipment completely eliminates the need for disposable filter cloths or paper, significantly reducing consumable costs and operator intervention.
As a specialized manufacturer, Yuwei Filtration Equipment designs both Vertical and Horizontal Pressure Leaf Filters tailored for the edible oil, petrochemical, and food & beverage industries. Our systems excel in bleaching earth filtration, crude oil winterization, and liquid sulfur clarification, featuring pneumatic vibrators for automatic, completely enclosed dry cake discharge without fluid or fume exposure.
When industrial processes involve volatile liquids, toxic chemicals, or require the extraction of a valuable dry solid cake (like spent bleaching earth in edible oil refining), open-air filtration is unviable. The Pressure Leaf Filter provides a 100% leak-proof, high-capacity solution that automates the entire separation and discharge cycle.
The system operates through a rigorous sequence designed to maximize liquid yield and automate solid disposal:
Depending on your facility’s footprint and the solid concentration of your slurry, our engineering team will recommend one of two distinct structural designs:
| Configuration | Filter Leaf Orientation | Filtration Area Range | Best Application Scenarios | Key Structural Advantage |
|---|---|---|---|---|
| Vertical Pressure Leaf Filter | Vertical Leaves | 2m² – 80m² | Edible oil polishing, low-solid chemical liquids, winterization. | Highly compact vertical footprint; ideal for tight facility layouts. |
| Horizontal Pressure Leaf Filter | Vertical Leaves inside a Horizontal Vessel | 10m² – 200m² | Bleaching earth filtration, high solid-content slurries, liquid sulfur. | Massive filtration area; the vessel retracts automatically for easy leaf inspection. |
The heart of our equipment is the filter leaf. We utilize a highly advanced 5-layer stainless steel mesh design (typically 304 or 316L). This architecture includes coarse inner layers for rapid liquid drainage and structural rigidity, and ultra-fine outer layers for precise particle retention. This robust metallic construction ensures the leaves can withstand years of continuous high-pressure filtration and vigorous vibratory discharge without tearing or warping.
Critical Logistics & Structural Note: When preparing your facility for a horizontal or large vertical leaf filter, the Operating Weight is a paramount engineering metric. This weight includes the heavy-duty carbon steel or stainless steel pressure vessel, the dense internal leaf pack, and the massive weight of the liquid and thick cake during a fully pressurized cycle. Furthermore, for Horizontal models, engineers must account for the dynamic weight shifting when the hydraulic cylinder retracts the vessel shell for maintenance. Proper concrete foundation planning based on this operating weight is essential for facility safety.
If your process involves flammable solvents, extreme temperatures, or hazardous fumes, a Pressure Leaf Filter’s enclosed vessel provides unparalleled safety. Furthermore, because it uses permanent stainless steel leaves instead of disposable PP filter cloths, it entirely eliminates the daily labor and consumable costs associated with changing cloths.
Yes. While it is famous for its dry vibratory discharge, the system can be engineered for “wet discharge.” By spraying high-pressure water or solvent across the leaves instead of vibrating them, the cake can be washed down and discharged as a concentrated liquid slurry.
On our Vertical models, the top cover is easily lifted via a davit arm or crane. On our Horizontal models, we integrate a hydraulic retraction system—at the push of a button, the entire outer shell slides back, completely exposing the internal leaf cluster for effortless 360-degree inspection and deep manual cleaning.
