Press the mine shaker structure to classify what

First we look at mine shaker structural features:
     ① The eccentric block as exciting force, strong exciting force.
     ② sieve and screen box beams using high strength bolts, simple structure, convenient maintenance;
     ③ The tire couplings, feeder breaker flexible connection, smooth;
     ④ the use of small amplitude, high frequency, large angle structure of the machine high efficiency, handle the largest, long life, low power consumption, low noise
Now we are under the mining vibrating screening machine structure and working principle into the following categories:
     (1) Fixed shaker: Working part fixed and depend on the material slide along the face leaving materials are sieved. Fixed grizzly is more of a concentrator applications, generally used for rough broken or crushed before the pre-screening process. It is simple in structure, easy to manufacture. Not consume power, you can unload the ore directly to the screen surface. The main disadvantage is the low productivity, screening efficiency is low, generally only 50-60%.
     (2) roller mine shaker: Face by scrolling horizontally arranged shaft consisting of a plate feeder root, shaft with plates, fine material from the gap between rollers or plates through. Bulk material from one end of the roller driven to move to and from the end of discharge. Concentrator rarely use this sieve.
     (3) a cylindrical mine shaker: working portion is cylindrical, the screen rotation around the cylinder axis, the axis of the general inclination of downloading into. The material fed into the cylindrical end of the fine material from the cylindrical working surface level through the sieve, coarse-grained material is discharged from the other end of the cylinder. Sieve cylinder low speed, smooth, good power balance. But its easy to plug the sieve screening efficiency is low, the work area is small, low productivity. Concentrator rarely use it to make screening equipment.
     (4) planar motion mine shaker: the body is one plane swing or vibration. Its flat trajectory is divided into linear motion, circular motion, elliptical motion and complex motion. Shaking sieve and shaker in this category.