What is a Reciprocating Screening Machine？

Reciprocating Screening Machine Core Definition & Terminology

Reciprocating Screening Machine Working Principle

1. Power Transmission: The motor drives the eccentric shaft to rotate through pulleys and reducers, converting circular motion into linear reciprocating motion of the screen body.
2. Screening Mechanism: The screen body reciprocates at a certain amplitude and frequency, making the material move parabolically on the screen surface. This realizes the separation effect:Undersize material (particle size smaller than the screen hole) passes through the screen mesh and falls into the lower collection area;
3. Oversize material (particle size larger than the screen hole) moves along the screen surface to the discharge port and is discharged.
4. Key Design: The inclination angle of the screen surface is adjustable (usually 3°-15°). Combined with the reciprocating motion trajectory, it avoids material blockage of the screen holes and improves screening efficiency.

Reciprocating Screening Machine Key Technical Parameters

Reciprocating Screening Machine Application Scope

1 Key Application Industries

• Fertilizer Industry (Focus Area):Organic fertilizer: Impurity screening of fermented materials, grading of granular organic fertilizer (e.g., sieving large particle impurities from 2-5 mm finished products);
• Compound fertilizer: Particle size grading of granulated products, screening of unqualified particles (caked materials).

2 Suitable Material Characteristics

• Solid materials (powder or granular) with moisture content ≤15% (to avoid bonding and blockage);
• Material temperature ≤120℃ (for conventional models); high-temperature models can withstand above 300℃;
• Particle size range: 0.1 mm-50 mm (customized screen mesh and vibration parameters are required beyond this range).

Reciprocating Screening Machine Advantages & Disadvantages

1 Advantages

• High screening efficiency (85%-95%) with good material stratification effect;
• Screen holes are not easy to block (thanks to reciprocating motion + inclination design);
• Simple structure and low maintenance cost (easy to replace screen mesh);
• High grading precision, capable of multi-stage screening (1-3 layers of screen mesh).

2 Disadvantages

• Higher energy consumption than vibrating screens (unit processing capacity energy consumption is about 1.2-1.5 times);
• Upper limit of processing capacity is lower than drum screens; multiple units need to be connected in parallel for large-scale production lines;
• Large vibration noise (requires supporting sound insulation devices);
• Not suitable for materials with high humidity (>15%) or strong cohesiveness.

Reciprocating Screening Machine Selection Criteria

1. Capacity Matching: Select screen area according to the hourly processing capacity of the production line (e.g., 1-2 ㎡ for 5-10 t/h, 5-8 ㎡ for 50-100 t/h);
2. Material Adaptation:High-humidity materials: Choose models with anti-blocking devices (such as elastic cleaning balls);
3. Fine-particle materials (<1 mm): Select stainless steel fine-mesh screens (304/316 material);
4. Grading Requirements: 1-layer screen mesh for single-stage screening, 2-3 layers for multi-stage grading (e.g., coarse/medium/fine);
5. Installation Conditions: Consider equipment size (length 2-6 m, width 1-3 m) and workshop space, and reserve maintenance channels;
6. Industry Standards: For the fertilizer industry, prioritize screening equipment that meets the requirements of GB/T 25249-2010 “Organic Fertilizer” to ensure that the particle size of finished products meets the standards.

Reciprocating Screening Machine Application Cases in Fertilizer Industry

• Organic Fertilizer Production Line: A 50,000-ton/year organic fertilizer project adopts 2 sets of 1.5×4 m reciprocating screening machines (screen hole 3 mm) for impurity screening of fermented materials (removing unrotten straw and stones). The screening efficiency is 92%, the processing capacity is 8 t/h, and it is equipped with pulse dust removal equipment to control dust.
• Post-Granulation Grading of Compound Fertilizer: A chemical fertilizer plant uses a 3-layer reciprocating screen (screen holes 2 mm/4 mm/6 mm) to classify granulated products into fine powder (recycled for re-granulation), finished products (2-4 mm), and large particles (recycled after crushing), with a grading precision of 95%.

Suppliers of Reciprocating Screening Machine：