Fine crushing impact crusher is widely used in building materials, mining, metallurgy, coal and chemical industries. In the crushing and grinding industry, reducing the particle size of the grinding materials and realizing "more crushing and less grinding" is an effective way to reduce production costs and improve production efficiency, which has been generally recognized by people and actively implemented. At present, domestic fine crushing operations mainly use fine jaw crushers, hammer crushers or impact crushers, all of which are unsatisfactory in terms of usage conditions. The fine crushing impact crusher solves the technical problems in the field of fine crushing. At present, the product has been serialized and put into use in the production lines of several cement plants. The effect is very good and it is well received by users.

Main structure and working principle

This machine is a vertical crusher, which is mainly composed of a motor, a transmission system and a main engine. The motor is vertically arranged, supported by the motor bracket, and drives the main shaft of the main machine through the triangular tape to rotate in a fixed direction. The host part includes components such as cover, barrel, main shaft and base

The crusher is a device that uses the principle of impact to crush ore. When working, the upper and lower rotors fixed on the main shaft rotate at high speed in a certain direction under the drive of the motor. When the material falls into the barrel from the feed port, it is firstly impacted by the auxiliary blow bar of the upper rotor, and the impacted material is thrown to the impact plate along the tangential direction of the rotor at a high speed to produce impact, and the material hits the impact plate. Under the action of the helical tooth surface, it returns to the space (crushing chamber) between the outer circumference of the rotor and the impact plate along the oblique downward direction. After being impacted by the rapidly rotating main plate hammer again, the material is thrown to the impact plate and continues to repeat the above process. In the crushing cavity, the material is crushed due to the repeated impact of the blow bar and the impact plate and the mutual collision between the material blocks. down into the crushing cavity of the second stage rotor. The second-stage crushing process is the same as the first-stage, the difference is that the linear speed of the second-stage rotor is higher than that of the first stage, and the impact force on the material is greater, so the material can be broken into finer pieces. When the material is crushed to the final product size, it will be discharged from the discharge port

Performance characteristics of fine crushing impact crusher

(1) The machine is designed according to the principle of classifying and crushing materials and increasing the input energy step by step, so it has a large crushing ratio, high crushing efficiency, and fine particle size of the output. the
(2) The discharge gap has an adjustment function to ensure uniform and stable discharge particle size
(3) The wear-resistant parts are made of high-quality and high-wear-resistant alloy materials, and the service life is 6-8 times longer than that of high-manganese steel
(4) Equipped with a special lubricating device, it is easy to fill oil and prolong the service life of the bearing. the
(5) The machine is a vertical crusherwith good sealing performance and no dust escape; the cylinder can be opened for easy disassembly and inspection
(6) The energy consumption of this machine is low, which is 0.5-0.8kWh/h lower than that of the existing hammer crusher. If this machine is used to crush limestone or clinker in a cement plant, it can replace part of the work in the first chamber of the mill and increase the productivity of the mill by 30% to 40%. The steel consumption of the power consumption mill of the system is significantly reduced, and considerable economic benefits can be achieved in a short period of time
(7) With overload protection device, which improves the reliability of equipment operation

The fine crushing impact crusher passed the technical appraisal in 2010, and has been put into use in raw and clinker production lines of many cement plants, and has achieved good economic benefits for users. The production practice has proved that the output particle size and the service life of the hammer head of the fine crushing impact crusher have reached the domestic advanced level, and the market prospect is very broad