Half-wet Material Crusher Machine

Equipment Introduction 

The half-wet material crusher, also known in the industry as a double-stage screenless crusher or a high-moisture organic fertilizer crusher, is a specialized impact-shear fine crushing equipment developed for high-moisture, high-fiber organic materials. It has been patented and fundamentally solves the industry pain points of traditional hammer crushers and cage crushers, such as screen clogging, cavity sticking, and drastic capacity reduction caused by wet materials.

Core Positioning and Classification

1. Model Classification

1) Single-stage half-wet crusher: Suitable for small workshops and small-capacity pre-processing, with a single rotor and single-layer blades;

2) Double-stage double-layer half-wet crusher (market mainstream): Features a double-rotor, double-layer crushing structure connected in series, with crushing efficiency twice that of the single-stage model. Suitable for large-scale organic fertilizer production lines. The Huaqiang Heavy Industry BSFS series is the standard representative model;

3) Stainless steel corrosion-resistant model: For processing salty, acidic sludge and fermented kitchen materials.

2. Core Key Features: The machine features a screenless, screen-bottom-free design, eliminating the problem of wet materials clogging the screen plates; it is suitable for high-moisture materials with a moisture content of 25%~55%, allowing for continuous crushing without pre-drying; the double-layer rotor composite crushing mechanism combines impact, shearing, and material feeding mechanisms, resulting in outstanding cutting performance for fibrous materials.

3. Key Differentiation from Cage Crusher

Core Advantages of the Equipment:

1. Screen-bottom-free anti-clogging design ensures continuous operation with high-moisture materials without jamming, preventing engine stalling and motor burnout;

2. Double-layer, double-stage crushing provides a large crushing ratio and uniform output particle size (adjustable from 0.5~5mm);

3. High-alloy wear-resistant blades with shifting and gap adjustment technology extend the service life of vulnerable parts by 3 times;

4. Enclosed casing with a dust collection interface ensures controllable dust;

5. No pre-drying treatment is required, shortening the organic fertilizer process and reducing investment in supporting equipment;

6. Single-person operation with a hydraulically opened cover structure for convenient internal cleaning and maintenance.

Equipment Limitations

1. Not suitable for high-hardness ores or large, hard, agglomerated fertilizers;

2. Long-fiber materials are prone to slight entanglement with the rotor, requiring pre-screening and segmentation;

3. Blade wear accelerates when processing high-mud and sandy materials.

The structure of the equipment

The half-wet material crusher is mainly composed of the following four parts. Each part works together to ensure the stable operation of the equipment in a high-humidity environment:

1. Rack part

The frame is the load-bearing foundation of the entire equipment. It is welded with high-quality carbon steel plates and channel steel. After strict product certification and specific process requirements, it has sufficient rigidity and stability to withstand the impact load and vibration generated during the crushing process. The normal operation of all machinery is inseparable from solid frame support.

2. Rotor broken part

This is the core working component of the equipment. It adopts an upper and lower double-layer rotor blade (double-stage rotor) structural design. The rotor has a novel structure and reasonable design. After the material enters the crushing chamber from the feed port, it is initially crushed into fine particles by the upper rotor, and then transported to the lower rotor for further crushing into fine powder, achieving the best crushing effect of "material powder, hammer powder". The crushing effect is twice that of other similar products. The upper and lower double-layer blade crushing system cooperates with the crushing plate to continuously grind the materials to meet the particle size requirements required for granulation.

3. Breaking plate adjustment device

By adjusting the distance between the crushing plate and the rotor blade, the fineness and output of the crushed material can be flexibly controlled. The gap between the hammer head and the tooth tip of the crushing plate is usually 1.5 times the maximum discharge particle size. This adjustable structure allows the equipment to adapt to production scenarios with different raw materials and different particle size requirements.

4. Transmission connection part

Using a flexible belt transmission system, the motor drives the pulleys and belts to directly transmit power to the main shaft, causing the main shaft to rotate at high speed to achieve the crushing effect. The flexible transmission design has a certain overload protection capability. When encountering unbreakable hard objects or excessive instantaneous load, the belt slippage can be used to protect the motor and spindle from damage.

In addition, some high-end models are also equipped with a centralized oil injection and lubrication system, which can inject lubricating oil without stopping the equipment during normal operation, further improving maintenance efficiency.

Working Principle of the Equipment

The half-wet material crusher is primarily designed based on the principle of high-speed impact and grinding. Its core working method is as follows:

1. Two-stage rotor series crushing (mainstream model)

The equipment mainly adopts a two-stage rotor series operation design:

First-stage crushing: After entering through the feed inlet, the material first enters the upper rotor crushing zone. Under the violent impact of the high-speed rotating hammers (blades), the material is initially crushed into fine particles.

Second-stage fine crushing: The initially crushed material is then thrown into the lower rotor crushing zone, where it is further finely crushed by the high-speed hammers. During this process, the material particles collide and grind against each other at high speed within the inner cavity.

"Hammer-to-material, material-to-material" effect: Through two-stage crushing, the material is simultaneously subjected to the impact of the hammers and the mutual collision and grinding between particles, achieving a dual crushing effect of "hammer-to-material, material-to-material".

Finished product discharge: The final product is a fine powder that meets the requirements, which is discharged directly from the outlet.

2. Single-Rotor Reversible Type

In addition to the two-stage rotor type, this equipment also exists as a "single-rotor reversible" type, used for grinding materials with specific moisture contents.

3. Core Operating Features

Screenless Particle Size Control: The equipment has no screen or sieve bottom; the output particle size is controlled by adjusting the gap between the hammers and the liner.

High-Speed ​​Rotation: The main shaft rotates at high speed driven by an electric motor, generating a powerful impact force.

Continuous Operation: Supports continuous feeding and uninterrupted operation.