Different types of sand sieving machine/Various types of sand screening machine.

 The construction sand in its natural status, contains organic matter, pebbles, and gravels of different shapes and sizes. When we need the sand of the required specification for particular construction work, we are left with no option but to sieve the sand. To make this process speedy, and according to the type of sand and site conditions, various models of sand screening machines are available on the market.

Now, let us look into the different types of sand screening machines, based on their working principles.

We can broadly classify them into 3 basic types. 

1. Rotary sand screening machine:

In this type, the sieving will be done by the rotation of the cylindrical part of the machine, ( see fig. below). They are either hand-operated or power-driven.

For the mechanical machine, the gearbox is attached to the shaft of the cylinder, which is driven by the motor of the required capacity.

Some manufacturers also provide handles at the other end, to run them, in the case of a power outage. 

In the manually operated machine, the handle will be provided to the shaft of the drum, for rotation.

Sand should be poured into the hopper and the sieved sand gets collected beneath the cylinder, or in front of it. In some regions, the cylindrical drum is also called a trommel drum, and hence the machinery is said a trommel drum screening machine.

2. Vibratory sand screening machine:

In this type, the sieving will be done by the vibration of the screening table of the machine. Unlike the rotary type, these machines are only power-driven.

They are classified into two main types according to their vibratory motion, that is

A linear vibratory screening machine 

and

A circular vibratory screening machine

Sand is poured over the vibratory table and the sieved sand gets collected in the sloppy tray provided at the bottom, which separates them in different directions. In these two types, circular vibratory is more efficient in screening wet sand.

3.  Sand screening cum washing machine :

In this type, after screening the sand, washing will be done in the second layer simultaneously to remove the silt, dirt, and unwanted chemicals from the sieved sand. This machine saves power and labor costs when the sand brought from the supplier needs washing. Otherwise, you have to install a separate sand washing machine to carry out this washing process.

 All these types of machines are available in various models, with different screening capabilities according to the person's needs. However, the basic working principle remains the same as described above.

To go through the articles related to the various types of construction machinery & tools, Click here.

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