Open type belt conveyors, as the name suggests, are a conveyor design in which the top of the conveyor belt is open and the materials are carried directly on it. These conveyors are generally used to transport large volumes and heavy materials.

The main features of open type belt conveyors are:

1. **Belt**: A wide and durable conveyor belt allows materials to be transported directly. This tape is usually made of rubber or synthetic materials and can come in a variety of widths and thicknesses.

2. **Support structures**: The carriers and carrier structures of the belt ensure that the conveyor remains firmly in place and the materials are transported safely. Support structures are placed at regular intervals along the conveyor.

3. **Drive mechanism**: The motor and drive mechanism that drives the conveyor belt. This mechanism allows the belt to move at the desired speed and direction.

4. **Belt direction changing mechanism** (optional): Some open type belt conveyors may have mechanisms that can change the belt direction to ensure that materials are transported in different directions.

Open type belt conveyors are widely used in many industries such as mining, quarries, ports, storage facilities and industrial production facilities. They provide an effective and efficient method of moving large amounts of materials.