What are the specifications of roller screens?
As a common screening equipment, roller screens are widely used in mining, building materials, chemical and other industries. Its specifications directly affect screening efficiency and applicable scenarios. This article will introduce the common specifications and application scenarios of roller screens in detail based on popular topics and hot contents throughout the network for the past 10 days.
1. Basic structure and working principle of roller screen
The roller screen is mainly composed of a screen cylinder, a drive device, a bracket and a material inlet and outlet. During operation, the material enters the rotating screen barrel from the feed port and is classified through the screen hole. The inclination angle and rotation speed of the screen barrel are adjustable to meet the screening needs of different materials.
2. Main specifications and parameters of roller screen
The specifications of roller screens usually include the following aspects:
| Specifications | Common ranges | illustrate |
|---|---|---|
| Screen diameter | 0.5-2.5 meters | Determines processing capacity and screening efficiency |
| Sieve length | 1.5-6 meters | Affect material residence time and screening accuracy |
| Mesh hole size | 1-100mm | Determine according to material particle size and grading requirements |
| Processing capability | 5-200 tons/hour | Related to equipment specifications and material characteristics |
| Motor power | 3-30kW | Depend on equipment specifications and material characteristics |
| Incline angle | 5-15 degrees | Affect material flow rate and screening efficiency |
3. Application scenarios of roller screens
1.Mining industry: Used for ore grading, roller screens of different specifications can handle ores of different particle sizes.
2.Building Materials Industry: used for grading screening of sand and gravel aggregates, the common specifications are 1.2-1.8 meters in diameter and 3-4.5 meters in length.
3.Chemical Industry: Used for screening powder materials, roller screens with smaller screen hole sizes are usually used.
4.Environmental protection industry: used for sorting domestic waste, the large-size drum screen processing capacity can reach more than 100 tons/hour.
4. Key points for selecting roller screens
1.Material characteristics: Including particle size, humidity, viscosity, etc., which affects the selection of screen hole size and screen cylinder rotation speed.
2.Processing volume requirements: Determine the diameter and length specifications of the drum screen.
3.Grading requirements: Choose a roller screen with several layers of screen mesh if you need to divide into several levels.
4.Working environment: Anti-rust treatment should be considered for outdoor use, and flammable and explosive environments need explosion-proof design.
5. Development trend of roller screen
According to recent industry hotspots, roller screens are developing in the following directions:
1.Intelligent: Equipped with sensors and control systems to realize automatic adjustment and remote monitoring.
2.Modular design: Easy to quickly replace screens and repair and maintenance.
3.Energy-saving and environmental protection: Adopt frequency conversion technology to reduce energy consumption and reduce noise and dust pollution.
4.Multifunctional: Integrated cleaning, drying and other functions.
6. Maintenance of roller screen
1. Check the wear of the screen regularly and replace the damaged screen in time.
2. Keep the bearing lubricated and add lubricating oil regularly.
3. Clean the clogged substances in the screen hole to ensure screening efficiency.
4. Check the operating status of the motor and transmission.
7. Common faults and methods for troubleshooting roller screens
| Fault phenomenon | Possible Causes | Solution |
|---|---|---|
| Low screening efficiency | Clogged screen holes, improper speed | Clean the screen holes and adjust the speed |
| Abnormal noise | Bearings damaged, fasteners loose | Replace bearings and fastener bolts |
| The screen cylinder does not rotate | Motor failure, transmission belt breakage | Maintain motors and replace transmission belts |
| Material accumulation | Excessive feeding volume and small inclination angle | Control the feed volume and adjust the angle |
The specification selection of roller screens directly affects production efficiency and product quality. When purchasing, users should choose the most suitable roller screen specifications based on actual needs, considering factors such as material characteristics, processing volume, and grading requirements. At the same time, with the development of technology, intelligent, energy-saving and environmentally friendly drum screens will become the mainstream of the market.
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