It is also called Free Fall Mixer or Gratify Mixer. In this type of mixer, concrete is mixed by lifting the material with the help of a stationary blade inside a rotating drum and then dropping the material by overcoming the friction between the mix and the blade. Filling and emptying can be done by changing the direction of rotation, opening, or tilting the drum of the mixer. Rotation speed must follow machine-specific instructions carefully. so that the free fall of the mixture is not obstructed by the centrifugal force.
Classification of drum type concrete mixer by Navya Equipments
Drum mix plant is suitable for concrete that is not too hard; typically used on construction sites with a drop of up to 50 mm. Truck mixers also use free-fall mixing. As the material in the free fall mixer falls from a height, some corrosion of the aggregate occurs. This type of concrete batching plant is used for the production of large quantities of concrete. These mixers are known for high production speed, and low maintenance, and are ideal for slump concrete.
Reverse Drum Mixer is available in the following three forms:-
- tilting mixer
- reversible mixer
- non-tilting mixer
- know about tilting mixers- Tilting mixers are typically trailer-mounted or otherwise portable, small to medium-sized mixers, used either as the main concrete mixing equipment on smaller sites or as auxiliary equipment on sites served by a concrete plant. Is. The drum consists of two axes: one around which the drum rotates and the other that serves to change from the loading and mixing position to the discharging position. This position change is done manually by the dump wheel, while drum rotation is electric, gasoline, or diesel-powered. Drums are traditionally made of steel, but polyethylene drums are now offered for easier cleaning. Most mixers are of the side-dump type, but end-dump mixers are also manufactured. The material is typically loaded directly into the drum manually. There are sizable self-loading units equipped with tilting hoppers.
After filling manually at ground level, the hopper is mechanically tilted and dumps the material into the drum. In some models, a built-in mechanical drag shovel is optional to facilitate total loading into the hopper.
- reversible mixer- Reversible drum mixer plant is similar to a non-tilting mixer except that the same opening is used to connect components and discharge aggregate. The drum on a reversible mixer has a horizontal axis around which it rotates. In the mixing position, the drum rotates in one direction; Whereas for discharge, the rotation is reversed.
Typically self-loading, reversible mixers are medium-sized to large-sized units mounted on a two- or four-wheeled trailer for transport between sites. The mixer is equipped with a tilting hopper, as is sometimes found on a tilting mixer, or with a hoist-like hopper that moves up and down on a small inclined set of rails and which propels the drum. Dumps the material through the bottom opening.
A built-in mechanical skip is optional on many models to facilitate total loading into the hopper.
- non-tilting mixer- A non-tilting drum mixer is one in which the axis of the mixer is always horizontal, and the discharge occurs by inserting a chute into the drum or reversing the direction of rotation of the drum. Due to the slow rate of discharge, some separation may occur. There are two openings at each end of the drum: one for feeding the ingredients, the other for discharging the mixture.
So, this was a brief description of the different types of concrete mixers used in the construction industry. Different types of asphalt mix plants are selected for use in projects depending on the type of aggregate, the quality of concrete required and the project cost. If you want to get more information about this then immediately contact Ready Mix Concrete Plant Manufacturers.