The role and effect of wind sifter in screening garbage

The application of wind sifter in garbage classification is very extensive. It plays an important role in various garbage treatment scenarios mainly due to its high efficiency, environmental protection and energy saving. The following are the specific applications of wind sifter in garbage classification:

Zhongcheng Machinery's Wind Sifter

A. Working principle of wind sifter

The wind sifter uses the principle of aerodynamics to effectively separate different components in mixed garbage by adjusting the airflow speed and direction generated by the fan. Specifically, a centrifugal fan is set inside the wind sifter to generate a strong airflow. Under the action of positive or negative pressure airflow, light materials in the garbage (such as paper, plastic, fabric, etc.) are separated because of their low density and easy to be carried by the airflow, while heavy materials (such as stone, glass, metal, etc.) settle due to gravity.

B. Application scenarios of wind sifter

1. Domestic waste treatment:

In urban domestic waste treatment centers, wind sifter can be used as pretreatment equipment to perform preliminary classification of garbage, laying the foundation for subsequent fine sorting and resource utilization. The wind sifter can quickly and accurately separate different components in domestic garbage, such as plastic, paper, metal, etc., thereby improving the efficiency and quality of garbage treatment.

2. Construction waste treatment: The wind sifter also plays an important role in construction waste treatment. By adjusting the wind speed and direction, the wind sifter can effectively separate light materials (such as plastics, paper, etc.) from heavy materials (such as bricks, concrete, etc.) in construction waste. The separated light materials can be sent to special recycling and processing facilities for reuse, while the heavy materials can be used to produce recycled building materials, realizing the maximum recycling of resources.

3. Industrial waste treatment: There are many kinds of waste generated in industrial parks. The wind sifter can help companies quickly separate valuable recyclables, such as plastics, metals, etc., thereby reducing waste treatment costs. At the same time, the wind sifter can also separate harmful substances in industrial waste and reduce environmental pollution.

Zhongcheng Machinery's Wind Sifter

C. Advantages of wind sifter

Efficient sorting: The wind sifter can quickly and accurately separate different components in the garbage, improving the efficiency of garbage treatment.

Environmental protection and energy saving: The wind sifter has low operating noise, low energy consumption, and reduces mechanical wear. At the same time, precise wind sorting can reduce environmental pollution.

Resource recycling: The wind sifter can promote the recycling of valuable resources such as paper and plastic, and reduce resource waste.

Reduce labor costs: The wind sifter has a high degree of automation, reduces dependence on labor, and improves work safety and reduces error rates.

D. The role of the wind sifter

After the wind sifter was introduced into the treatment of construction waste, the separation efficiency of light materials was greatly improved. The plastics, paper, etc. that were originally mixed together were accurately separated and then sent to special recycling and processing facilities for reuse, while the remaining heavy materials were used to produce recycled building materials. This process not only saves land resources, but also reduces environmental pollution, achieving a win-win situation in economic and environmental benefits.

Zhongcheng Machinery's Wind Sifter

E. The sorting effect of the wind sifter

The sorting effect of the wind sifter is generally considered to be quite good, thanks to its efficient sorting mechanism based on aerodynamic principles. The following is a detailed analysis of the sorting effect of the wind sifter:

a. Efficient sorting ability

The wind sifter can use the difference in suspension speed between materials and impurities to achieve impurity removal and sorting through wind power. This mechanism enables the wind sifter to quickly separate light impurities (such as plastics, rubber, waste paper, etc.) from heavy materials when processing mixed materials. In the treatment of construction waste, the wind sifter can effectively remove light objects such as plastic films and packaging bags from bricks and concrete debris to ensure the purity of subsequent processed products. In the coal industry, dry air separation technology can avoid the water resource consumption problem caused by traditional wet coal washing, and effectively improve the quality of raw coal.

Zhongcheng Machinery's Wind Sifter

b. Factors affecting the sorting effect

Although the wind sifter has high-efficiency sorting capabilities, its sorting effect is also affected by many factors, mainly including:

1. Raw material characteristics: The difference in suspension speed between light impurities and grain particles in the raw grain affects the sorting effect. When the difference is large, it is easy to sort and the sorting effect is good; when the difference is small, it is difficult to sort and the sorting effect is poor.

2. Material feeding state: The material is evenly spread along the width of the air duct and enters the separation zone continuously and stably, which is an important condition to ensure the air separation effect. The speed of the material entering the separation zone should not be too high, and the speed direction should be as close to the horizontal as possible, which is conducive to the rising airflow penetrating the material layer to take away impurities.

3. Structural dimensions of the suction duct: The structural dimensions of the suction duct are closely related to the distribution of materials along the duct and the time when the airflow acts on the material, which directly affects the air separation effect.

4. Wind speed and air volume: The efficiency of air separation is positively correlated with the average wind speed in the duct, but the wind speed should not be too high. Too high wind speed is easy to take away grains, increase air volume and power consumption; too low wind speed cannot suck away light impurities.

5. Material flow rate into the machine: When other conditions are constant, the flow rate increases, the material layer becomes thicker, and the chance of light impurities being sucked out by the airflow is reduced, resulting in a decrease in air separation efficiency; conversely, the air separation efficiency is improved, but the equipment output is reduced.

Technical parameter table of Wind Sifter：

c. Methods for optimizing sorting effect

In order to improve the sorting effect of the wind sifter, the following measures can be taken:

1. Adjust the air pressure: Control the air pressure by adjusting the air door, air pipe resistance, blower speed, etc. to balance the screening effect and material accuracy.

2. Adjust the screen angle: The smaller the screen angle, the better the screening effect. The screen angle can be adjusted by adjusting the bracket angle or changing the screen size to achieve the best screening effect.

3. Control the material feed speed: Adjust the material feed speed according to the actual situation to maximize the production efficiency while ensuring the screening accuracy.

4. Adjust the amplitude: Properly increasing the amplitude can improve the screening effect, but too large an amplitude will cause excessive material flying, affecting the screening effect and equipment life.

PS: The wind sifter has efficient sorting capabilities, but its sorting effect is also affected by many factors. By optimizing operating parameters and equipment configuration, the sorting effect of the wind sifter can be further improved, providing more efficient and reliable solutions for solid waste treatment, resource recovery and environmental protection. wind sifters are widely used in garbage sorting, with advantages such as efficient sorting, environmental protection and energy saving, and resource recovery. With the continuous advancement of technology and the popularization of applications, wind sifters will play a more important role in the future garbage treatment field.

Author : Serena Chang

Serena Chang is the writer of blog and news column. With more than 10 years of working experience in the machinery industry, she has a comprehensive understanding of environmental protection machinery and is willing to share useful knowledge of environmental protection machinery.