Single screw press machine
Single screw press machine
The single screw press, also known as a screw dewatering machine, screw squeezing dryer, screw extrusion dewatering machine, or screw pressing dehydrator. It is a continuous-operation device designed for liquid extraction from organic materials and solid-liquid separation of inorganic residues. This juicing and dewatering machine represents our company’s third-generation extrusion separation technology. It is not merely a simple upgrade of traditional extrusion separators but a revolutionary redesign. The screen mesh does not clog and imposes no requirements on feedstock concentration, viscosity, hardness, astringency, particle size, or fiber length—it processes any material without selection. The press operates stably, smoothly, and continuously with low failure rates, minimal maintenance costs (due to non-force, protective extrusion of the screen), and exceptionally high juice extraction and dewatering rates, outperforming any other press or centrifuge on the market. For certain fruits and vegetables, the juice yield reaches 85%, and it uniquely supports juicing with pits intact. Some materials achieve a post-dewatering dryness of 20%, delivering results unattainable by conventional juicers or dehydrators, thereby generating significant economic benefits for waste recycling or liquid extraction. With high efficiency, the initial investment can typically be recouped within one processing season, offering exceptional cost-effectiveness. Hence, our motto: “selection Creates Value.”
Technical Parameter
Model | Capacity(t/h) | screw diameter(mm) | rotate speed(r/min) | Power(kw) | Dimensions: length * width * height(mm) | Weight(t) |
ZTZY-120 | 0.1~0.3/0.26 | 120 | 30 | 2.2/3 | 1900×420×700 | 0.5 |
ZTZY-180 | 0.3~1/0.5 | 180 | 20 | 5.5 | 2500×550×800 | 0.8 |
ZTZY-250 | 0.8~3/0.93 | 250 | 16 | 7.5 | 3100×650×900 | 1 |
ZTZY-315 | 2~5/1.6 | 315 | 16 | 11 | 4100×790×1320 | 2 |
ZTZY-400 | 5~13/2 | 400 | 10 | 22 | 4700×990×1420 | 4 |
ZTZY-500 | 8~18/3.3 | 500 | 9 | 37 | 6100×1200×1500 | 6 |
ZTZY-630 | 15~35/4.2 | 630 | 9 | 45 | 6800×1350×1650 | 7.5 |
ZTZY-800 | 25~50/7 | 800 | 7 | 75 | 7500×2300×2200 | 9 |
ZTZY-1000 | 30~70/8.5 | 1000 | 6 | 90 | 8100×2700×2600 | 12 |
Advantage
- Continuous operation, outperforms "frame-type" presses, reducing labor.
- Low-speed operation prevents material temperature rise.
- Incremental compression principle achieves high efficiency with low power consumption.
- Pneumatic backpressure control on the discharge cone ensures uniform residue dryness.
- Consistent dryness unaffected by feed rate, enabling seamless integration with other equipment.
- Special feed hopper design prevents material bridging.
- No slippage, backflow, or shaft adhesion during processing.
- No clogging or jamming of the screw.
- Self-cleaning mechanism via coordinated components eliminates screen blockage.
- No water flushing required, unlike belt presses prone to filter clogging.
- Avoids water flushing needed in stacked screw presses to clear gaps between rings.
- Wear-resistant design: Unlike traditional presses that wear screws by forcing material against screens, this machine uses incremental compression, minimizing wear.
- Cost-effective pneumatic backpressure control replaces unsanitary, high-maintenance hydraulic systems.
- Supports simultaneous pressing with steam, hot water, solvents, ethanol, or supercritical CO₂.
- Industry-leading dewatering/juice rates: Up to 85% juice yield for certain produce, 20% dryness for residues.
- Built-in shredding effect: Optional pre-shredding (recommended for speed and dryness optimization).
- Versatile: Processes long/short, hard/soft, sticky/astringent, fibrous, powdery, or granular materials.
- 304 stainless steel contact parts ensure hygiene, ideal for solid-liquid separation and food processing.
- Easy cleaning: No screen disassembly; high-pressure washing, split-screen design, optional automated systems.
- Robust construction: Sandblasted finish, simple structure, low maintenance.
- Premium drive system: Low-speed, high-torque, quiet, vibration-free.
- Dual electrical controls: Auto-shutdown for jamming protection (large models).
- Full support: Pre-sale consultation, 3D layout planning, 24/7 post-sale response.
Working Principle

The screw press operates on the principle of incremental compression, utilizing the coordinated action of the feed hopper, screw, screen mesh, and discharge cone. Material is evenly fed into the inlet via a pump or auger. As the screw rotates, it compresses the material while liquid passes through the screen into a collection tray below. Dehydrated residue is discharged via a conveyor belt.
Application
- Waste reduction: Food/organic waste dewatering, organic-inorganic separation.
- Juice extraction: Fruits (apples, grapes, citrus), vegetables (ginger, beetroot), flowers (chrysanthemum, rose), roots/stems (sugarcane, algae).
- Solid-liquid separation:
-Bio-pharma: Herbal residues, plant extracts.
-Energy: Biogas residue, cassava pulp, algae.
- Manure dewatering: Livestock/poultry waste, slaughterhouse wastewater.
- Other industry: Cellulose, medical/rubber/plastic waste, diaper recycling, pulp dewatering.