Equipment Introduction:
This type of equipment is manufactured by introducing the latest technology from Europe. It is a semi-stiff extrusion shaping equipment perfectly designed for high-end building material. The equipment is widely used for extruding and shaping various types of high-end ceramics, wall panel building materials and other wet process products in building material manufacturing industry. The material, technical structure, electrical system, and operating system of the equipment all comply with European standards. The Automation degree is high, operation is easy, service life is long and maintenance cost is low.

Features of Vacuum Extruder:
1. Vacuum De-airing System: Prior to extrusion, a vacuum pump (typically achieving -0.092 to -0.098 MPa) removes air from the clay, reducing body porosity and enhancing density. This prevents cracking, delamination, or explosion during drying and firing.
2. High-Pressure Extrusion System: Utilizes a spiral auger or two-stage extrusion mechanism to ensure homogeneous clay compaction. Extrusion pressure typically ranges from 2.5 to 4.5 MPa, accommodating clay materials of varying hardness.
3. Adjustable Mold System: The mold determines brick dimensions and profiles (e.g., solid, hollow, or perforated bricks). High-performance extruders feature quick-change mold systems to minimize downtime and enhance production flexibility.
4. Wear-resistant Materials & Low-maintenance Design: Critical components (auger, liner, extrusion head) utilize high-chromium alloy steel or tungsten carbide (WC) coatings for extended service life. Premium models incorporate hydraulic clearance adjustment to automatically compensate for wear, maintaining stable extrusion pressure.
5. Automated Control: Modern vacuum extruders feature PLC-controlled systems monitoring vacuum level, extrusion pressure, and motor load for intelligent adjustment. Advanced models support remote monitoring for predictive maintenance and fault alerts.

Functions of Vacuum Extruder：
1. Material Processing : Mixes and extrudes clay (may include shale or coal gangue).
2. De-airing: Removes air bubbles to enhance strength.
3. Shaping: Forms bricks via dies (solid/hollow blocks, etc.).
4. Cutting: Some models integrate auto-cutting for brick lengths.
5. Conveying: Transfers bricks to drying or stacking systems.

Equipment Specification:

Importance of High-Quality Extruders:
1. Improves Brick Quality, Reduces Waste: Low-end extruders cause cracks, deformation, weak bricks (waste rate >10%). High-end machines ensure dense, precise bricks (waste rate<2%).
2. Boosts Efficiency, Lowers Energy Use: Reliable extruders enable 24/7 production with minimal downtime. Optimized pressure reduces power consumption (e.g., VFD saves 20%+).
3. Extends Lifespan, Cuts Maintenance: Cheap extruders wear fast (auger replacement every 3–6 months). Premium models last 1–3 years, reducing part/labor costs.
4. Adapts to Raw Materials: Handles clay with 14–22% moisture, even mixed with shale/coal gangue. Quick mold changes enable diverse products (solid/perforated bricks).
5. Reduces Issues in the Following Process: Better extrusion minimizes drying cracks, firing deformations.

The vacuum extruder is the "heart" of a brick plant, Choosing a reliable, wear-resistant, automated machine ensures higher quality, lower costs, and long-term competitiveness.