First, the structure of the sifting machine
Sifting machine is a simple structure, easy to operate screening equipment, mainly by the feed port, screening chamber, discharge port, vibration motor, filter and so on. The following sections are described in detail:
1. Feed port: The feed port of the sifter is usually round or square, which is the only way for powdery materials to enter the screening chamber.
2. Screening chamber: The screening chamber is the core component of the sifting machine, which includes the screen frame, screen mesh, etc. The screen frame is generally made of metal, and the screen is determined according to the size of the sifting particles.
3. Discharge port: The discharge port is opposite to the feed port, which is the exit part after powder separation.
4 Vibration motor: Vibration motor is an important part of the screening chamber, its main function is to make the powder material constantly change position in the screening process by means of vibration, to promote separation.
5. Filter: Filter is mainly used to eliminate particles that cannot pass through the screen, so as to ensure the screening effect.
Second, the working principle of sifting machine
The working principle of the sifter is to put the material into the sifting chamber from the feed port. When the material oscillates continuously in the sifting chamber, the particles pass through the sifting hole one by one to achieve the effect of separating the material.
The vibration of the screening chamber comes from the vibration motor, and the high frequency vibration generated by it will drive the material in the screening chamber to move forward or upward, thereby promoting the screening. In the process, the vibration motor can also be adjusted at high and low speeds according to the required screening effect.
In the screening process, small particles are separated and large particles are trapped in the screen. At this time, it is necessary to further strengthen the vibration strength in order to shake down the large particles that are blocked on the screen. In addition, the filter can intercept particles that cannot pass through the screen, ensuring the screening effect.
Third, the screening process and advantages of the sifter
The screening machine adopts the vibrating screening method, which has the advantages of high screening efficiency, high screening precision and low energy consumption. In the screening process, the material flow is perpendicular to the screen surface, and when the powder material passes through the screen, the particle axis is perpendicular to the screen surface, which can efficiently and accurately complete the screening process.
In addition, the sifter also has the advantages of simple structure, easy operation, easy cleaning, easy maintenance, etc., and is widely used in pharmaceutical, chemical, food, building materials, mining and other industries.
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