Guangzhou Fuerle Health Technology Co., Ltd , https://www.fuerlegroup.com
Drum type pellet screening machine
1. Terms and Definitions
The following terms and definitions apply to this standard.
1.1 Roller Cylinder
A roller cylinder refers to a cylindrical-shaped screen used in the screening process, designed to allow particles to pass through while retaining larger materials.
1.2 Filtering Sieve
A filtering sieve is a multi-stage sieving system integrated within a single drum, allowing for the efficient separation of pellets based on size.
2. Classification and Marking
2.1 Classification
Pellet screening machines can be categorized into two types based on their transmission mechanism: external friction transmission and central shaft transmission. Each type has distinct operational characteristics and structural features.
2.2 Model Numbering
The model number of the pellet screening machine must follow the requirements specified in YY/T0216.
2.2.1 Model Marking
The model marking format is as follows: SW G â–¡ â–¡ â–¡
- The first letter (G) represents the design sequence, which is denoted by letters A, B, C, etc.
- The second number indicates the drum diameter in millimeters.
- The third character is the structural feature code: "M" stands for friction-driven, and "Z" stands for central shaft-driven.
- The first letter "S" denotes screening function, while "W" indicates pellet processing.
2.2.2 Example of Model Marking
For instance, the model "SWGM500A" refers to a modified design of a drum-type pellet screening machine with a drum diameter of 500 mm.
3. Requirements
3.1 Materials
3.1.1 All components of the pellet screening machine that come into contact with pharmaceutical products must be made from non-toxic, corrosion-resistant materials that do not chemically react with or absorb the material being processed.
3.2 Appearance Quality
3.2.1 The inner and outer surfaces of the drum should be smooth, free from noticeable hammer marks, unevenness, scratches, or other defects.
3.2.2 The sieve holes must not have any burrs or sharp edges.
3.2.3 The entire machine’s exterior should be free from defects such as hammer marks, scratches, weld seams, uneven surfaces, burrs, or sharp corners.
3.2.4 Surface Treatment: For parts not directly in contact with the drug, sheet metal components and carbon steel structures must be coated with a durable and visually consistent finish. The coating should be free from cracks, peeling, bubbles, or scratches.
3.3 Safety Requirements
3.3.1 The electrical system's protective grounding must meet the requirements outlined in section 19.2 of GB5226.1-2002.
3.3.2 The insulation resistance of the electrical system must comply with the specifications in section 19.3 of GB5226.1-2002.
3.3.3 The dielectric strength of the electrical system should conform to section 19.4 of GB5226.1-2002.
3.3.4 The protective earthing circuit must adhere to the guidelines in section 8.2 of GB5226.1-2002.
3.3.5 The control buttons must meet the standards set forth in section 10.2 of GB5226.1-2002.
3.3.6 Indicator lights and displays must comply with the requirements in section 10.3 of GB5226.1-2002.
3.3.7 Electrical wiring should follow the rules in section 14 of GB5226.1-2002.
3.3.8 The markings, warning signs, and project codes on the electrical system must align with the regulations in Chapter 17 of GB5226.1-2002.
3.4 Performance Requirements
3.4.1 All parts of the pellet screening machine should be securely fastened and stable.
3.4.2 The drum must rotate smoothly, without unusual vibration or resistance.
3.4.3 All adjustable and rotating components should operate freely and reliably.
3.4.4 The noise level during operation should not exceed 80 dB(A).