Sieving and crushing integrated machine

Abstract

The invention discloses a sieving and crushing integrated machine. The sieving and crushing integrated machine comprises a machine housing, a sieving and distributing machine (1) arranged at an upper part of the machine housing, and a sieving and crushing machine (35) arranged at a lower part of the machine housing, wherein the sieving and distributing machine (1) comprises a charge hole (2), an arc-shaped distributing plate (6), an iron remover (11), a transmission device, a flange type sieve shaft (4) and a filter sieve shaft (5); the sieving and crushing machine (35) comprises a main rotor, an arc-shaped counterattack sieve roller set, a particle size adjusting device and a transmission device; and a charge hole (36) of the sieving and crushing machine is positioned below a discharge hole (9) of the sieving and distributing machine. The sieving and crushing integrated machine has the following creative effects: the original two-stage crushing and one-stage sieving mode is changed to be a one-stage sieving and one-stage crushing mode, so that a system structure is simplified; problems of material adhesion and blockage, high iron content, low sieving and crushing efficiency, high power consumption, non-uniform ring hammer wear, unadjustable particle size, high difficulty in overhauling and replacement of spare parts, inconvenience in operation and the like are solved; and the sieving and crushing integrated machine is a major innovation of sieving and crushing equipment technology.

Description

technical field [0001] The invention relates to the technical field of screening and crushing devices for materials with different particle sizes, in particular to a screening and crushing integrated machine. Background technique [0002] It is well known that thermal power plants mainly use pulverized coal boilers and circulating fluidized bed boilers, and their fuels are all pulverized coal and coal gangue particles with a certain particle size. The particle size of the raw coal coming from the coal mine is uneven. Most of the particle size of the raw coal does not need repeated crushing. The screening and crushing machine can directly separate the qualified particle size, and the remaining large particle size material enters the Crusher crushed to qualified particle size. In the pulverized coal furnace screening system, the raw coal that accounts for more than 60% is usually screened out; the feed particle size is 0-500mm; the screening particle size is 30-50mm; the crus...

AI Technical Summary

Problems solved by technology

The screening and crushing machine has the following fatal shortcomings: 1. Material blocking, stuck, 2. Poor crushing efficiency, 3. The particle size cannot be adjusted, 4. Cannot remove the iron removal parts in the material, 5. The motor power is too large

The multi-stage hammer screen crusher has the following fatal flaws: 1. Material blocking, 2. Poor screening efficiency, 3. Poor crushing efficiency, 4. The particle size cannot be adjusted, 5. Iron parts in the material cannot be removed, 5. The motor power is too high 6. It is difficult to overhaul and replace spare parts

Such a system layout has several disadvantages: 1. Two crushing buildings; 2. One more belt conveyor; 3. Increased power consumption of equipment; 4. Large amount of equipment maintenance and repair

The main disadvantages of the ring hammer crusher are: 1. Insufficient output; 2. Frequent shutdown caused by material moisture and sticking; 3. Serious wear of the hammer head and sieve plate; 4. The particle size of the output cannot be adjusted.

The main disadvantages of the toothed roller crusher are: 1. The particle size of the material cannot be guaranteed; 2. The partial wear caused by the tooth plate is serious; 3. The maintenance and replacement of the tooth plate is heavy workload

The main disadvantages of the impact crusher are: 1. The hammer head is severely worn; 2. The frequent shutdown caused by the moisture sticking of the material; 3. The output is insufficient; 4. The power consumption of the main motor is too large

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