Compact vacuum extruder
Date:2025-07-25

Equipment introduction:
The compact extruder is a single-stage vacuum brick machine engineered for small-to-medium clay fired brick plants. It eliminates the conventional upper mixing section and is rigidly bolted to the upstream mixer/extruder mouth, creating a one-piece structure that greatly shortens overall length and reduces building height requirements.
This is one of our patented product. Both the upper and lower stage share one motor, so the structure is compact, the appearance is eye-catching, energy saving and high efficiency performance are remarkable, extrusion pressure is high. Widely practicability and small investment has made it the perfect choice for small and medium brick making enterprises for technology transformation.

Application in Clay Brick Plant: Used to vacuum-extrude pre-treated clay, shale, or coal-gangue mixes into wet brick blanks in one pass, ready for cutting, stacking, drying, and firing downstream.
Equipment specification:
Model | Auger diameter(mm) | Maximum extrusion pressure (Mpa) | Capacity(t/h) | Overall dimension (mm) | Weight(t) | Power(kW) |
VP40/35 | φ400/350 | 3.0 | 4-13 | 6000 x 2800 x 1500 | 8 | 45-55 |
VP40/40 | φ400 | 3.0 | 4-15 | 6500 x 2800 x 1500 | 9 | 55-75 |
VP45/35 | φ450/350 | 3.0 | 4-18 | 7000 x 3000 x 1500 | 10 | 55-75 |
VP45/40 | φ450/400 | 3.0 | 6-25 | 7000 x 3000 x 1800 | 12 | 75-90 |
VP45/45 | 15-30 | 3.0 | 10-30 | 7000 x 3000 x 1800 | 14 | 90-110 |

Function:
• Vacuum degassing: achieves –0.08 MPa vacuum to remove air, increasing blank density;
• Continuous extrusion: direct coupling with the upstream mixer ensures steady, uninterrupted output;
• Space-saving: overall machine length is ~30 % shorter than traditional two-stage extruders, ideal for retrofits or height-limited plants.

Extrusion Advantages:
• One-piece mouth eliminates mud leakage, boosting forming rate to >98 %;
• Compact vacuum chamber cuts energy use by ~15 %;
• Quick-change die head allows mold switch in 30 min;
• Low-noise operation ≤75 dB(A).

Key Specifications:
• Extrusion pressure: 2.0–3.5 MPa
• Vacuum level: -0.08 MPa
• Capacity: 8,000–12,000 standard bricks/h
• Installed power: 45–75 kW
• Brick types: solid, perforated, hollow blocks
• Dimensions: approx. 4.5 m × 1.6 m × 1.8 m

This compact extrusion brick machine is most suitable for the following two types of scale of clay brick factories:
1. Small-to-medium brick plants (3,000–20,000 t of finished bricks per year, operating in one or two shifts).
2. Retrofit projects with limited building height or length, or emergency/short-term projects that require rapid deployment on a compact footprint.


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