Internal Mixer
Internal Mixer
Multiple domestic factories for bidding. Free promotion. Price to be negotiated between winning bidder and buyer.
Please provide below information for posting:
- New or used; 2. Model or volume; 3. Power; 4. Processed material; 5. Heating method; 6. Purchase quantity
表格
| Type | Rotor Configuration Features | Core Advantages | Main Limitations | Typical Application |
|---|---|---|---|---|
| Tangential (Shear‑type) | Elliptical rotor cross‑section; certain gap between two non‑contact rotors. | Strong dispersive mixing performance, ideal for high‑shear filler dispersion. | Slightly weaker distributive mixing effect. | Rubber plasticating, mixing & final mixing, especially tire industry. |
| Intermeshing Type | Intermeshing rotor profile with small clearance between outer edges. | Excellent distributive mixing, heat exchange and self‑cleaning performance. Suitable for high‑fill, heat‑sensitive compounds requiring low‑temperature precise control. | Relatively lower throughput, slightly higher energy consumption. | High‑quality rubber compounds, plastics and rubber‑plastic blending. |
Besides the two main types above, internal mixers can be classified by rotor speed: single‑speed, dual‑speed and variable‑speed models. By mixing chamber structure: standard type and tilting type. Tilting mixers need no lower ram, feature fast discharge, easy cleaning and smaller footprint.
Specifications & Core Parameters
Internal mixer size is indicated by total chamber volume (L) or working volume (L). Working volume is effective batch capacity, accounting for 50%‑70% of total volume (filling factor).
表格
| Specification Grade | Common Models (Working / Total Volume) | Main Motor Power (kW) | Main Application |
|---|---|---|---|
| Lab / Small‑size | XM‑1L, 2L, 3L, 5L, 10L, 20L, 35L | 5.5‑55 | Formula R&D, material testing, small‑batch sampling |
| Medium‑small Production | 75L, 100L, 120L, 160L | 160‑400 | Small product plants, special‑material production |
| Medium Production | 250L, 270L, 320L, 420L | 500‑1500 | Mass production of general rubber & plastic products |
| Large‑size Production | 440L, 580L, 650L, 1000L | 2000‑6000 | Tire factories, large compound mixing centers |
Specification notation: Domestic mixers adopt format X(S)M‑working volume / rotor speed. Example: X(S)M‑75/35×70 denotes dual‑purpose rubber‑plastic internal mixer, 75 L working volume, dual speed (35 rpm & 70 rpm).
Core Components & Structural Features
Diversified Rotors: Multiple rotor styles including standard four‑wing tangential, ZZ2, ST, NST, six‑wing tangential, high‑stress flow‑extrusion, PES3/PES5, etc.
Transmission System: Options include DC stepless speed regulation, AC frequency conversion, dual‑speed motor or reducer shift gear, delivering smooth transmission and low noise.
Mixing Chamber: Drilled jacket structure for large heating/cooling area. Inner wall hard‑alloy overlay welding for high wear resistance and good thermal performance.
Sealing Assembly: Fork‑type external pressure seal or hydraulic seal widely used, ensuring high‑pressure lubricant injection for durability and reliability.
Upper Ram: Pneumatic or hydraulic design for higher pressure and better mixing. Ram cylinder supports water‑cooling.
Discharge Gate: Drop‑down style. Locking mechanism: hydraulic slide‑plate or crank hinge, stable operation and reliable sealing.
Control System: PLC‑based with manual / automatic modes. Controls mixing time, temperature and energy (power‑time integral) to stabilize compound quality.
High‑end Trend: Tandem Internal Mixer
Tandem internal mixer represents major technical progress. Two mixers are stacked in series: upper intermeshing mixer and lower shear‑type mixer.
Features: Upper unit completes compound mixing and constant‑temperature processing. Lower unit has no upper ram, focusing on distributive mixing and temperature control.
Advantages: ‑ Ultra‑high efficiency: Production efficiency increased by over 80%; compound dispersion improved by over 10%. ‑ Remarkable energy saving: 30‑50% power saving; 20‑30% less investment for plant and equipment. ‑ Stable quality: Closed system reduces contamination with minor quality fluctuation; suitable for high‑performance tire compounds.
Selection Guidelines
‑ Match rotor with process: Tangential rotor for general mixing; intermeshing rotor for high‑quality precise mixing. ‑ Match volume with output: Confirm working volume and model according to batch or hourly throughput. ‑ Match temperature control with material: Heating configuration for plastics; cooling configuration for rubber processing. ‑ Match structure with workshop layout: Tilting‑type for compact space; tandem mixer for new large‑scale plants. ‑ Match intelligence with quality requirements: Adopt PLC with time / temperature / energy control for high consistency demand.
Participation Process
Manufacturers: Contact supplier service for supply registration.
Buyers: Click group‑purchase or contact procurement service to submit requirements. The platform filters suppliers from database or releases bidding based on aggregated demands. Buyers select competitive suppliers and sign sales contracts.
