Vacuum Screw Discharge Kneader Mixer
Sigma Mixer for Silicone Rubber
Standard Design（Customizable）:
Material: SUS 304, 316 or mild steel
Discharging: Tilting discharging/Screw extruding discharging/Bottom plate
Heating: Electric heating/Water heating/Oil heating/Steam heating
Cooling: Water cooling/Jacket cooling
Vacuum: Water-ring vacuum pump/ buffer tank.
Motor: Explosion proof motor
Independent Control Panel: Variable speed/ Temperature/Discharging
Working Volume: 5 to10,000 Cubic Feet (from experiment to production)
Vacuum Screw Discharge Kneader Mixer
Product Overview
The Ultimate Solution for High-Wear, High-Viscosity Materials
The KARVIL 2700L Vacuum Screw Discharge Kneader Mixer is a powerful machine specifically engineered for processing extremely viscous and abrasive materials, such as crushed asphalt shingles.
Built for continuous, heavy-duty operation, this kneader combines massive capacity, powerful 110kW UL-certified drive, precise temperature control (heating jackets/coils), and superior wear resistance (Mn16 steel) to deliver unparalleled mixing performance and product homogeneity in the most demanding industrial applications.
Key Features
1. Extreme Durability & Wear Resistance
Advanced Material Construction: All material contact parts—including the Sigma blades, mixing chamber, and screw barrel liner—are constructed from Mn16 Wear-Resistant Steel.
Reinforced Blades: The exterior of the mixing blades is clad with a 10mm thick layer of Mn16, ensuring minimal wear and extended service life when processing abrasive materials like asphalt granules.
2. Power & Precision Drive System
High-Power Motor: Driven by a 110kW, 6-pole main motor from the reputable WEG brand, complete with UL certification for safety and reliability.
Variable Speed Control (VFD): Features frequency control, allowing operators to precisely adjust blade speeds from 0-30rpm (Fast) and 0-21 (Slow) for optimized mixing shear control.
3. Advanced Heating & Temperature Control
Comprehensive Heating System: Equipped with heating jackets on the mixing barrel and the bottom screw barrel, complemented by electric heating coils on the outer screw barrel for uniform, efficient temperature maintenance critical for asphalt processing.
4. Superior Vacuum Capability
High-Efficiency Vacuum System: Includes a dedicated vacuum pump, buffer tank, and metal hose connections.
Guaranteed Vacuum Level: Capable of achieving a deep vacuum of -0.09 MPa, essential for de-aerating, solvent extraction, and ensuring product purity.
5. Efficient Discharge
Screw Extrusion Discharge: High-viscosity materials are efficiently and completely discharged via a powerful screw extrusion system, minimizing residue and cleaning downtime.
Technical Parameters
| Type | NH-5 | NH-10 | NH-100 | NH-300 | NH-500 | NH-1000 | NH-1500 | NH-2000 | NH-3000 | NH-4000 | NH-5000 | |
| Total Volume (L) | 5 | 10 | 100 | 300 | 500 | 1000 | 1500 | 2000 | 3000 | 4000 | 5000 | |
| Mixed amount/batch (L) | 1.5-3.5 | 3.0-7 | 30-70 | 90-210 | 150-350 | 300-700 | 450-1050 | 600-1400 | 900-2100 | 1200-2800 | 1500-3500 | |
| Rotation Speed (rpm) | 42/34 | 42/34 | 37/21 | 37/22 | 37/23 | 37/26 | 37/22 | 30/21 | 30/21 | 30/20 | 28/18 | |
| Main Motor Power (Kw) | 0.75-1.5 | 1.1-3 | 5.5-11 | 7.5-30 | 15-37 | 22-90 | 22-90 | 30-110 | 30-110 | 45-110 | 55-132 | |
| Heating Methods | Steam Pressure (MPa) | Jacket for steam ≤0.3MPa | ||||||||||
| Electric Power (Kw) | 2.4 | 2.4 | 6 | 12 | 18 | 30 | 45 | 54 | 72 | 72 | 90 | |
| Vacuum (MPa) | 0~ -0.096Mpa (Vacuum Kneader) | |||||||||||
| Discharging Method | Tilting cylinder | |||||||||||
| Screw extrusion | ||||||||||||
Our Services
LABORATORY TEST In order to be able to demonstrate the advantages and modes of action of our industrial mixing machine with your products, our fully equipped modern laboratory/technical center is at your disposal. |
PROFESSIONAL ENGINEER The experienced team of engineers is specialized in the R&D and design of mixers, grinding equipment, and plastic recycling machine. Karvil explores new technical points constantly to create perfect solutions for customers. |
DIRECT FACTORY Karvil factory has a series of strict standard system to control the procurement of raw materials, manufacturing process, in-process inspection, and product inspection, so as to ensure the quality of our products. |
Applications
Certifications
F.A.Q.
1. Manufacturer or trading company?
We are a manufacturer with strict production standards in China.
2. Where is your company?
Our company is located in Yantai, Shandong,——Powder Equipment Industry Belt.
3. About your company's visit?
We can pick you up at Qingdao Airport conveniently, and then we can take you to our factory.
4. What is the main market for your company?
Asia and Africa, Australia, America, Europe.
5. Can you provide customized products?
Yes, we have professional engineers to meet your special design needs, so we can provide customized products.
6. What is your delivery time?
It usually takes about 20 to 30 days, the exact time also depends on the type and quantity of the product.
7. About the product warranty?
Usually, we provide a 1-year warranty for the products that have been sold, but we can also provide life-long service when you need it to maintain a long-term relationship with you.
8. What are the payment terms?
T/T, L/C, etc.