Product Introduction

In order to loosen the material layer on the screen for easy sieving, the shape of the sieve disc can be eccentric or irregular. To prevent materials from getting stuck on the screen shaft, it is equipped with Insurance device. Suitable for separating coal, coke, ore, limestone, etc., widely used in mining viscous materials, construction waste, household waste, and coal transportation systems. It is also widely used in metallurgy, chemical industry, building materials, mining, and coal systems.

Working principle

Due to the fact that the sieve shaft is arranged at different working angles, the speed of the material is faster when it runs at higher working angles; When the material runs at a lower working angle, the speed is slower. Two materials running at different speeds start to move axially when they meet at a certain position on the screen surface, which evenly distributes the materials on the screen surface and achieves the goal of improving screening efficiency. The screen surface of a roller screen is composed of many shafts arranged in parallel and equipped with screen discs in a staggered manner. The rollers rotate through sprockets or gears, and their rotation direction is the same as the direction of material flow. In order to loosen the material layer on the screen for easy sieving, the shape of the sieve disc can be eccentric or irregular. To prevent materials from getting stuck on the screen shaft, it is equipped with Insurance device. All roller screens are seat type, with left and right transmission options. After the material enters the sieve box from the feeding port, due to the large angle of 15 ° between the first 5 sieve shafts and the horizontal, the material begins to move downward at a faster speed under the dual effects of its own weight and the rotation of the sieve blades, while undergoing screening. This is the preliminary coarse screening stage. Most of the materials are screened and laid flat on the entire surface after this stage; After the material enters the last 5 screening shafts, due to the almost horizontal arrangement of the screening shafts, which are at a 5 ° angle to the horizontal, the material's forward speed slows down. This is the fine screening stage of screening. After this stage, the material with a particle size less than 30mm has been screened out, and the material with a particle size greater than 30mm is sent to the crusher for the next crushing step through the discharge port.

Feature and advantage

1. By using multiple rollers to rotate and push the material forward, it has good sealing and low noise.

2. Each sieve shaft has a set of driving devices that drive each sieve shaft separately, making installation and maintenance convenient.

3. The sieve plates are all cast with manganese 13, which has good wear resistance and long service life.

4. The screen shaft is equipped with an overload protection device. When the screen shaft is blocked, it can automatically alarm and cut off the motor power supply, thus achieving self-protection.

5. According to user requirements, an electric baffle can be added to achieve bypass operation, thereby improving the flexibility of operation.

6. Adjustable speed, dual mechanical and electrical protection.

7. Equipped with a bypass device.

8. It can achieve centralized control or on-site operation.

Technical Parameter