PFL vertical plate hammer compound crusher is also called vertical plate hammer sand making machine and vertical shaft impact crusher. This crusher is a new type of high-efficiency crushing equipment developed by introducing, digesting and absorbing foreign vertical shaft hammer crusher in 1990s. This machine is widely used in building materials, metallurgy, mining, coal, chemical industry, electric power and other industries, such as crushing cement clinker, gypsum, limestone, sand and gravel, blast furnace slag, iron ore, gold mine, molybdenum mine, medium stone, lump coal, asbestos mine, phosphate rock and other hard materials. For example, a new type of vertical plate-hammer compound crusher with high chromium alloy plate hammer can crush high-hardness materials such as pebbles.
Working principle of PFL vertical plate hammer compound crusher;
When the material falls into the cylindrical machine body from the feed hopper, it is first impacted by the plate hammer on the first rotor, and then thrown to the impact plate at high speed along the tangential direction of the rotor. Under the action of the spiral tooth surface on the impact plate and gravity, the material bounces obliquely between the outer circumference of the rotor and the impact plate (that is, the crushing cavity), and then is hit by the rapidly rotating plate hammer and thrown at the impact plate, and the process is repeated. Due to the repeated impact of the plate hammer and the impact plate in the crushing cavity and the mutual impact between the blocks, the materials are crushed along their natural joints and bedding. When the particle size of the crushed material is smaller than the discharge gap of the first stage rotor, the material enters the crushing cavity of the second stage rotor under the action of gravity. The second stage grinding process is the same as the first stage, but the difference is that the linear speed of the second stage rotor is higher than that of the first stage, which has a greater impact on the material, so the material can be crushed more finely. When the material is crushed to the final product size, it is discharged from the discharge hopper. The larger ones generally have three stages of crushing and three rotors.
The working principle of vertical plate-hammer compound crusher is to crush materials through the impact and extrusion of plate hammer.
The crushing process of vertical plate-hammer compound crusher is through crushing. Generally, it only takes 2~3s for materials to be added to the finished product from the entrance. Therefore, the material throughput is relatively fast and the output is high.
The vertical plate-hammer compound crusher integrates two methods of crushing materials into one machine body. The first stage crushing embodies the characteristics of impact crusher, which breaks large materials into small pieces through high-speed impact. The second stage of crushing embodies the characteristics of extruder. Small pieces of materials are crushed after impact and extrusion, and the products become powder and small particles. The crushed material rotates and falls in the machine body, so that the material is fully crushed; The material is impacted and extruded in the second crushing chamber, and the extrusion strength can reach 30MPa. When the granular layer is compacted, the impact will crush the material particles. In this way, the material discharged under impact and extrusion is not a cake, but a loose material. Therefore, the products of vertical plate-hammer composite crusher do not need to use crushing equipment.
Performance characteristics of PFL vertical plate hammer compound crusher;
(1) The crushing ratio is large, and the maximum feeding granularity is 100~220mm, and the discharging granularity is less than 3mm, accounting for more than 90% (of which 30%~60% is powder). The modulus of discharging granularity can be adjusted, which can be used for stone molding. The straight-through type does not need a grate and is not easy to block wet materials.
(2) The energy utilization rate is high, and the power consumption per unit output is1.29 kW h/t;
(3) When used with a ball mill, the output of the mill can be increased by 30%~40%, and the power consumption of the system can be reduced by 20% ~ 30%;
(4) There are few wearing parts, and the wearing parts are made of high wear-resistant alloy, with small wear and long service life;
(5) Balanced operation, good sealing performance, less dust and low noise;
(6) Simple structure, convenient operation, small floor space and convenient installation and maintenance.