Sifting machine is a kind of equipment specially used for sifting powdery materials, also known as powder sifter, sifting machine usually has a small sieve hole and multi-layer screen structure, which can carry out fine classification and screening of powdery materials. It can classify the powder material according to the particle size, remove impurities and particles that do not meet the requirements, so as to obtain fine powder or uniform powder products that meet the requirements.
Vertical air screen
Horizontal air sifter
The working principle of the sifting machine is to generate high-frequency vibration through the vibration exciter, so that the powder material produces fine vibration movement on the sifting surface, so as to achieve the sifting and grading of the powder material. The specific working process is as follows:
Principle diagram of sifting machine
Vibration motor generates vibration: The sifter is equipped with a vibration driver inside, which can be a motor driven vibration motor. The vibration driver generates high-frequency vibration power, which is transmitted to the sifting surface of the sifting machine.
Sieve surface vibration: the vibration force is transmitted to the sieve surface through the structure of the sieve machine, so that the sieve surface produces high-frequency vibration. The screen surface can be single or multiple layers and usually consists of a fine hole or screen.
Screening: The powder material enters the sifter through the feed port and is placed on the sifting surface. Because of the high frequency vibration of the screen surface, the powder material produces a subtle vibration movement on the screen surface. Depending on the particle size of the powdery material and the aperture of the screen surface, larger particles will be blocked by the aperture on the screen and cannot pass through, while smaller particles can fall into the collector below through the aperture of the screen. In this way, the particle size separation of the powdery material is achieved. During the screening process, particles or impurities that do not meet the requirements are blocked by the screen, thus achieving the removal of impurities.
Screening machine structure drawing
The sifting machine has the following characteristics:
High screening efficiency: The sifting machine uses the airflow sifting method to quickly screen the powder. They have a large screening area and airflow speed, making the screening process more rapid, improve screening efficiency.
Sifting down to 530 mesh: Used to separate particles of two different sizes, the force generated by the blades is also ideal for breaking up caked and caked powders and sifting up to 530 mesh.
Flexible adjustment: with adjustable vibration parameters, air velocity and screen aperture parameters. This allows the operator to flexibly adjust the screening process according to the specific needs to achieve the desired size distribution and screening effect.
Wide adaptability: The screening machine is suitable for the screening of a variety of powder materials, including but not limited to chemicals, food, pharmaceuticals, building materials and other fields. Whether it is fine powder or coarse powder, whether it is dry or wet powder, the sifter can cope with and complete the sifting task.
Automated integration: Can be integrated with other equipment or production lines to automate material handling and production processes. This helps to increase production efficiency, reduce manual intervention, and ensure continuity and stability in the screening process.
Easy screen replacement: The internal parts of the screen can be quickly disassembled without the use of tools, the screen can be replaced within 30 seconds, and the screen can be checked and cleaned by easy to remove the screen.
Sifters can be used to sift various types of powder, including but not limited to the following categories:
Food powder: such as flour, powdered sugar, cocoa powder, starch, milk powder, seasoning and other powder materials used in food processing.
Chemical powder: such as pigment, dye, plastic powder, rubber powder, chemical fertilizer, pharmaceutical raw materials used in the field of chemical powder materials.
Pharmaceutical powder: including pharmaceutical raw materials, powder, herbal powder, Chinese medicine powder and other powder materials used in the pharmaceutical industry.
Building materials powder: such as cement, lime powder, gypsum powder, ceramic powder, glass powder and other building materials used in the field of powder materials.
Metal powder: such as iron powder, aluminum powder, copper powder, steel powder, stainless steel powder and other metal industry used powder materials.
Ore powder: including coal powder, ore powder, slag and other powder materials used in the mining field.
Sifting machine is widely used in powder processing, chemical, pharmaceutical, food, building materials and other industries. In these fields, it is used in the screening, grading and removal of impurities of powdered raw materials to improve product quality, particle size control and production efficiency. The high degree of automation of the sifter can be integrated with other equipment or production lines to achieve automated powdery material handling processes.
