The vibrating sifter for medicine powder sieving is a sieving device designed for grading and sieving fine powder materials. Its main function is to effectively separate medicine powders of different particle sizes to obtain finished materials with consistent particle sizes or remove impurities that are too coarse or too fine. In medicine powder sieving, the commonly used sieving mesh range is 80 mesh to 400 mesh, among which:
80 mesh (about 0.18mm) is suitable for the initial sieving of coarse medicine powder;
120 mesh to 200 mesh is often used for the grading of conventional medium-sized medicine powder;
300 mesh to 400 mesh (about 38μm) is suitable for medicines with higher requirements for fine powder, such as some traditional Chinese medicine powders or hormone raw materials.
The equipment generally adopts a single-layer or multi-layer design, and 13 layers of screens can be selected according to the sieving requirements to achieve simultaneous separation of 24 material levels.
Removal of impurities and large particles; during the screening process, the dust of medicine powder is serious, which not only causes the valuable machineedicine powder to be lost in vain, but also the operators on the scene are also attacked by the powder for a long time, which makes the workers miserable.
Production Process
Crushing-drying-drying-sieving-packaging
Analysis of the specific situation of screening
According to the screening production process, the medicine powder is divided into: grinding and pulverizing medicine powder and jet-pulverizing medicine powder. For the above two kinds ofmedicine powder, we have different screening equipment to choose from:
1. Grinding medicine powder-high fiber content, difficult to screen. Light specific gravity. During the screening process, the screening equipment can not meet the screening requirements on site due to the easy clumping of the materials during the screening process. At this time, it is suitable The equipment is centrifugal sifter. It should be noted: if this material is vibratory sifter (vibratory sifter's vibration principle is up and down), the material is difficult to fall when flying, the output is small, and the dust is large. Therefore, according to the output of the customer, we have WQS-18- 65, WQS-30-100, WQS-50-130 three types of equipment, due to the high value of medicine powder products and the characteristics of light specific gravity, the materials that fly out are profitable, intelligent screening formed by the combination of air flow screen and dust removal equipment The system not only solves the waste of raw materials, but also improves the environment at the work site, improves employee satisfaction and reduces environmental risks; it can also be connected to a shredder to reduce costs.
2. Medicine powder after jet pulverization——Due to the hard agglomeration of water droplets caused by jet pulverization during the production process, the vibratory sifter and linear vibrating screen are more suitable for this situation. According to the customer’s request Screening mesh number, output, and on-site space, professionally select suitable equipment for customers.
All contact and non-contact parts of the sieve are carved from high-quality stainless steel, because stainless steel has high corrosion resistance and is easy to clean. Even the welded joints of the machine are seamless to ensure that no material is deposited on the joints. The pharmaceutical grade vibratory sifter always carries out the sanitation and safety screening process in accordance with the requirements of the pharmaceutical company.
Test sieve
The test sieve is usually made of one or more standard sieves stacked together. Through manual or mechanical vibration, the drug powder passes through the sieves with different apertures to achieve particle size classification.
Number of layers: usually 1-8 layers
Applicable scenarios: suitable for small batches of drug powder screening. It can accurately analyze the particle size distribution of drug powder. Since sieves with different mesh sizes can be superimposed, 13-14 materials with different particle sizes can be separated at the same time.
Features: Conventionally, it can be equipped with 80~500 mesh sieves, with low output, suitable for small sample testing.
Airflow sieve
The airflow sieve uses high-speed airflow as the screening medium. The drug powder passes through the sieve driven by the airflow, and the fine powder is carried away by the airflow, while the coarse powder is retained on the sieve. The sieved particle size can be controlled by adjusting the airflow speed and the mesh number of the sieve.
Mesh number: suitable for the classification of high mesh number (such as 400~800 mesh) fine powder.
Applicable scenarios: airflow screens are particularly suitable for screening ultrafine powders, and are also often used to screen sticky, easily agglomerated or highly electrostatically active drug powders.
Features: It can screen extremely fine powders, and has good effects on sticky and easily agglomerated materials, and can achieve higher product purity.
Cyclone screen
The material enters the screen cylinder through the spiral feeder, rotates under the action of the airflow and contacts the screen. The fine powder is brought into the cyclone separator by the airflow through the screen for collection, and the coarse powder is discharged from the slag discharge port.
Mesh: It can be used to screen high-precision drug powders above 800 mesh.
Applicable scenarios: Cyclone screens are also suitable for fine screening of drug powders, especially when high-purity products are required.
Features: The screening efficiency is high and a higher separation accuracy can be achieved.
Rotary vibration screen
The rotary vibration screen drives the eccentric block to rotate through the motor, generating horizontal, vertical and inclined three-dimensional vibrations, so that the material moves in a complex trajectory on the screen surface, thereby achieving fast and efficient screening.
Number of layers: Generally 1 to 3 layers are more common.
Applicable scenarios: The rotary vibrating screen is suitable for screening granular and powdered materials, and has a large processing capacity.
Features: Large processing capacity, high efficiency, suitable for large-scale production. High screening accuracy, can be multi-layered classification.
Vibratory sifter for medicine powder sieving consists of a sieve placed on a base plate which is centrally connected to a rotary motor. The material fed through the inlet located at the top falls on the screen, the particles smaller than the mesh size pass through the screen, and the larger size particles are released through the outlet, which can screen at a faster speed than the standard vibratory sifter The vibratory sifter, the application works on the principle of three-dimensional motion, compared to the traditional vibratory sifter, this vibratory sifter generates 3 times more vibration and provides higher throughput in the ultra-fine screen.
Model |
Diameter (mm) |
Feeding Size (mm) |
Frequency (RPM) |
Layers |
Power (kw) |
Capacity (kg/h) |
DH-400 | 400 | <10 | <1500 | 1-5 | 0.18 | 100 |
DH-600 | 600 | 0.25 | 200 | |||
DH-800 | 800 | 0.55 | 500 | |||
DH-1000 | 1000 | 0.75 | 800 | |||
DH-1200 | 1200 | 1.1 | 1200 | |||
DH-1500 | 1500 | 1.5 | 1800 | |||
DH-1800 | 1800 | 2.2 | 2000 |
Dahan has a record of manufacturing a large number of medicines, food filters and filters. These vibratory sifters are specially designed according to the safety regulations of medicines, food and beverages. If you are still looking for a sturdy, reliable and long-life sifter and Filter, please contact us immediately!
Vibratory Sifter for Medicine Powder Sieving is a vital tool for sieving medicine powders in pharmaceutical applications. This equipment utilizes vibration to separate particles based on size, ensuring a uniform and fine powder consistency. The sifter's mesh screen efficiently removes impurities, ensuring product purity and quality. Its gentle yet effective sieving action prevents clumping and ensures a smooth flow of powder. With adjustable settings for vibration intensity and screen mesh size, the vibratory sifter offers precise control over the sieving process, meeting the stringent requirements of pharmaceutical powder handling. Its sanitary design, easy cleaning features, and compliance with industry regulations make it a reliable choice for pharmaceutical companies seeking efficient and hygienic powder sieving solutions.
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