JS-type twin-shaft mixer

The full name of the JS twin-shaft mixer is the JS series twin-horizontal-shaft forced concrete mixer. It is the most widely used forced mixing equipment in the construction engineering field at present. It can operate independently as a standalone unit or work with batching machines to form a concrete mixing plant. It delivers excellent mixing quality and meets the construction requirements of various projects.

Core Structure and Working Principle

The JS model adopts a twin-horizontal-shaft counter-rotating mixing structure. Two horizontally arranged mixing shafts are installed in parallel. Gear transmission drives the two shafts to rotate in opposite directions at a constant speed. Mixing blades are arranged on the shafts in an inclined spiral pattern, which performs all-round forced shearing, turning and mixing of concrete materials to eliminate dead zones and ensure uniform mixing.

Its core advantage lies in forced mixing. It can rapidly and evenly mix even dry-hard concrete, with much higher mixing efficiency and quality than gravity-type mixers.

Main Models and Parameters

JS models are classified by rated discharge capacity. The comparison of key parameters is as follows:

Model | Rated Discharge Capacity | Rated Feed Capacity | Theoretical Productivity | Total Power | Maximum Aggregate Size

JS500 500L（0.5m³） 800L ≥25m³/h 18.5kW 60mm

JS750 750L（0.75m³） 1200L ≥35m³/h 37kW 60mm

JS1000 1000L（1m³） 1600L 50m³/h 2×30kW 80mm

JS1500 1500L（1.5m³） 2250L 90m³/h 2×37kW 80mm

JS2000 2000L（2m³） 3000L 100-120m³/h 2×37kW 100mm

The above parameters are for reference only. Different manufacturers may make slight adjustments according to the actual design.

Technical Features

Compact and Stable Structure: It occupies a small floor area and features high overall structural rigidity. It is easy to transport and install. The outrigger height can be customized to meet different material discharging scenarios.

Intelligent Operation and Maintenance: Most units are equipped with an automatic lubrication pump with an independent pump core for oil supply and excellent sealing performance. Safety switches and emergency stop switches are fitted for high safety factors and low operating noise.

High Durability: Mixing blades are made of high-chromium wear-resistant cast iron. The shaft end adopts a double-seal structure for good wear and corrosion resistance. The service life of blades can exceed 50,000 batches.

Wide Compatibility: Custom modification is supported. It can be combined with batching machines of different specifications to form a mixing plant or used as a standalone unit to satisfy construction demands of various scales.

Main Application Scenarios

It is mainly applicable to various construction projects and precast component production:

Construction sites of housing construction, roads and bridges, water conservancy and hydropower projects, for mixing stiff concrete, plastic concrete, lightweight aggregate concrete and various mortars;

As the main mixer of a mixing plant, it can be matched with PLD series batching machines to form medium and small commercial concrete mixing plants, supplying finished concrete for engineering projects;

In concrete precast component factories, for mass production of cement pipe piles, bridge box girders, shield segments and other precast components.

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