Gravel Separator Machine is used for separation, screening and grading of materials such as sand, gravel, etc. It is usually composed of a feeding device, a screening system, a transmission device, a discharge port and a bracket. According to the screening requirements, you can choose sieves with different mesh numbers or aperture sizes. Common specifications include 2 mesh (about 10mm), 4 mesh (about 5mm), 8 mesh (about 2.36mm), etc. There are also sieve holes in millimeters, such as 10mm, 20mm, and 30mm, which can meet the separation requirements of coarse, medium and fine particle sizes. The equipment can be equipped with one or more layers of sieves to achieve secondary or multi-stage screening. It is often used to efficiently grade gravel larger than 30mm, medium-sized crushed stone and small-particle stone powder. Some models also have a dust removal system or a water washing device to effectively remove dust and soil impurities, improve the overall environmental protection performance and the cleanliness of the finished product.
Gravel Separator Machine uses a vibration motor as an excitation source to make the screen box produce linear reciprocating vibration, driving the material to jump forward on the screen surface, thereby realizing the stratified screening of sand and gravel according to particle size. When the equipment is started, the dual vibration motors installed on both sides of the screen body rotate in the opposite direction at the same time, generating a combined force to make the screen box vibrate linearly. After the material enters the screen surface evenly from the feed port, it is thrown up and moves forward under the action of the vibration force. During the process, smaller particles pass through the screen holes and fall into the lower layer, while large particles move forward along the screen surface to the end and are discharged, realizing particle classification.
The screen usually adopts a multi-layer structure. For example, a three-layer screen can divide the material into four particle sizes (such as >30mm, 10–30mm, 5–10mm, <5mm), and can be configured with different "mesh numbers" or opening sizes (such as 4 mesh ≈ 5mm, 8 mesh ≈ 2.36mm) to flexibly meet the needs of different working conditions. The advantages of the linear vibration principle are clear screening trajectory, high screening accuracy, large processing capacity and simple structure, which are suitable for continuous and high-intensity work.
Common types of Gravel Separator Machine include vibrating separators, drum screens, circular vibrating screens, water-washing separators and mobile separation equipment. Among them, linear vibrating screens are the most widely used type in gravel separation, and are particularly suitable for efficient screening of medium and fine-grained materials. The equipment is driven by a dual vibration motor, which uses the excitation force to make the screen body move back and forth in a straight line, driving the material to jump forward on the screen surface, and particles of different particle sizes are separated in turn. The linear vibrating screen can be configured with screens of different mesh sizes according to demand. Commonly used screens include 2 mesh (about 10mm), 4 mesh (about 5mm), 8 mesh (about 2.36mm), etc., and finer screens can also be customized to achieve multi-level classification. Generally, it can be equipped with single-layer or multi-layer screens to achieve secondary to fourth-level screening. Its processing capacity varies according to the size of the screen surface, material characteristics and the number of screen meshes. Small models can process 10-30 tons per hour, and medium and large equipment can process 50-150 tons/hour. It is widely used in stone factories, machine-made sand production lines and construction aggregate processing.
Mobile gravel separators are particularly common and convenient for transfer operations; they also have the characteristics of high efficiency, large processing capacity and convenient operation. For stone sites with a daily output of more than 1,000 tons, heavy-duty gravel separators with double or three-layer screening structures can effectively meet large production needs, and their hourly processing capacity can reach 50-300 tons.
Gravel Separator Machine is not only about improving separation efficiency, but also about reducing labor costs, improving work safety and material utilization. The equipment is simple to operate and easy to maintain, and can adapt to a variety of material environments, such as natural river sand, machine-made sand, crushed stone, pebbles, stone powder mixtures, etc.
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