Hammer crushers are available in several types, including single-stage hammer crushers, high-efficiency hammer crushers, sanding machines, vertical shaft hammer crushers, reversible hammer crushers, and ring hammer crushers. A ring crusher is a variation of the traditional hammer crusher, where the hammerhead is replaced with a steel ring. This design allows for a combination of high-speed impact and low-speed rolling, resulting in finer material output. It is commonly used in power plants to crush coal, as well as for materials like gypsum, salt, chemical raw materials, and other medium-hard substances.
The materials processed by these crushers include coal, salt, white materials, gypsum, bricks, limestone, and more. Each type of hammer crusher has its own unique features and applications depending on the material being crushed and the desired output size.
There are different classifications of hammer crushers based on various factors:
1. According to the number of rotors, they can be either single-rotor or double-rotor models.
2. Based on the direction of rotor rotation, they can be irreversible or reversible.
3. Depending on the arrangement of hammers, they are classified into single-row and multi-row configurations. In single-row models, the hammers are mounted on the same plane, while in multi-row versions, they are distributed across multiple planes.
Single-Stage Hammer Crusher
A single-stage hammer crusher, also known as a composite hammer crusher, is designed for heavy-duty crushing tasks. It is primarily used for breaking limestone, and large models can reduce 1-meter diameter limestone to about 20mm in one step. This type of crusher is widely used in the cement industry due to its strong crushing capacity and efficiency.
High-Efficiency Hammer Crusher
The high-efficiency hammer crusher is ideal for fine crushing applications and plays a crucial role in this field. The hammer head in such a model is typically a split structure, connected to the hammer handle via bolts. The material used for the hammer head is a chrome-molybdenum alloy, which offers excellent wear resistance. This makes it the most durable among all types of hammers. Additionally, the split design allows for easy replacement when needed.
Sanding Machine (Traditional Hammer Crusher)
The sanding machine is one of the earliest forms of hammer crushers, where the hammers are directly attached to the rotor using rods. To prevent damage, the hammer heads must not be too hard, which results in a shorter wear cycle compared to high-efficiency models. Despite this limitation, it remains a reliable choice for certain applications.
Vertical Shaft Hammer Crusher
The vertical shaft hammer crusher is known for its lack of a sieve plate structure, which eliminates the risk of blockage. However, it lacks a large counterattack angle between the hammers and the lining, making it slightly less effective for fine crushing. Its hammer head is a one-piece construction, which makes maintenance and repairs more challenging.
Reversible Hammer Crusher
This type of crusher is particularly suitable for soft and low-abrasive materials. The rotor can rotate both forward and backward, significantly extending the life of the hammers and reducing the frequency of replacements. This feature makes it an efficient option for continuous operations.
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