Forced Twin Shaft Concrete Mixer

Forced twin shaft concrete mixers are equipment used for concrete production and are widely used on construction sites, precast component plants and other concrete-related industries. Common models of twin shaft forced concrete mixers include the JS500, JS750, JS1000, JS1500, JS2000, JS3000 and JS4000.

Structural components of forced twin shaft concrete mixer:
- The mixing system
Consists of a motor, a reducer, open gears, a mixing shaft, and mixing blades. The motor, through the reducer, drives two horizontally arranged mixing shafts to rotate at constant speeds in opposite directions. The blades on the mixing shafts forcefully mix the concrete.
- The loading system
Typically consists of a winch mechanism, a loading rack, and a hopper. The winch motor drives the hopper up along a track, feeding the material into the mixing tank.
- The discharge device
Located below the mixing tank. It is opened and closed by an electric actuator or hydraulic system to facilitate material discharge.
- The water supply system
Consists of a water pump, a water tank, and a water spray pipe, allowing precise control of the water supply according to mixing requirements.
- Electrical system:
Includes control cabinet, motor, and sensors, used to control concrete mixer operation and monitor equipment status.

Operating principle of twin shaft forced concrete mixer:
The mixing blades on the two mixing shafts are arranged in a spiral pattern. During operation, the rotating shaft drives the blades to shear, squeeze, and tilt the material within the drum, forcing a forced mixing action. The blades push material near the drum wall toward the center and ends of the drum, forcing intense convection. Simultaneously, the rapid circular motion of the blades applies compression and shear forces to the mixture at the intersection of the two shafts, creating a dispersed material throwing process, resulting in a uniform mixing process in a short period of time.

Performance features of twin shaft forced concrete mixer:
- Excellent Mixing Quality:
The twin-shaft forced mixing method achieves a concrete homogeneity of ≥95%. It can mix dry, plastic, flowable, lightweight aggregate concrete, and various mortars.
- High Production Efficiency:
The theoretical production rate is high. For example, the JS500 concrete mixer has a theoretical production rate of 25 m³/h, while the JS2000 concrete mixer can reach 120 m³/h, meeting the needs of large-scale construction.
- Low Energy Consumption:
The scientific design concept reduces material friction and impact, ensuring more efficient material flow and effectively reducing mixing energy consumption.
- Long Service Life:
The blades and liners are made of high-alloy, wear-resistant materials. Advanced heat treatment processes and design methods extend the equipment's service life.
- Quick and Clean Discharge:
The hydraulically driven, wide-opening discharge door ensures rapid discharge, while the scraper ensures seamless mixing and leaves no residue.

Forced twin shaft concrete mixer is suitable for large, medium and small precast component plants, as well as industrial and civil construction projects such as highways, bridges, water conservancy projects, and docks. It can operate as a standalone unit or as a simple concrete mixing plant with a PLD series batching unit. It can also be supplied as a supporting unit for larger concrete mixing plants.