Mineral sizers, including the feed hopper, crushing system, base part and electrical control part, is characterized by the crushing system is composed of main and secondary drive motors, high and low speed tooth roller rotors, material guide, crushing, screening and discharging devices, wherein the high and low speed tooth roller rotors are located on the side of the feed hopper outlet, and the high and low speed tooth roller rotors are provided with knife teeth. The high and low speed tooth roller rotors are respectively connected with the main drive motor and the secondary drive motor. The high and low speed tooth roller rotors rotate relative to each other. The lower side and circumference of the tooth roller rotor are provided with a material guide, crushing, screening and discharging device composed of a guide plate, a cutting screen plate, a guide cutting vertical plate and an upper guide plate inserted into the edge of the rotor shaft sleeve. Mineral sizers developed by our company are mainly used for crushing coal, clay, ore, chemical and other materials. They can form crushing stations with belt conveyor, plate feeder, crusher, vibrating screen and other equipment to break related materials well.
In order to better accomplish the purpose of the utility model and make the pass rate of the material under the screen reach 100%, the lower side and circumference of the mineral sizers tooth roller rotor are provided with a material guide, crushing, screening and discharging device composed of a material guide plate, a cutting screen plate, a guide cutting vertical plate and an upper material guide plate inserted into the edge of the rotor shaft sleeve. The guide plate and the upper guide plate are fixed on the inner wall of the crusher, and the guide cutting vertical plate and the cutting screen plate are arranged on the guide plate. In the technical scheme, the lower side and circumference of the tooth roller rotor are provided with a guide, crushing, screening and discharging device inserted into the edge of the rotor sleeve, including three cases: the lower side and circumference of the low speed tooth roller rotor is provided with a guide, crushing, screening and discharging device inserted into the edge of the shaft sleeve of the high speed tooth roller rotor; The lower side and circumference of the high speed tooth roller rotor are provided with guiding, crushing, screening and discharging devices inserted into the shaft sleeve edge of the low speed tooth roller rotor: The lower side and circumference of the high and low speed tooth roller rotor are provided with guiding, crushing, screening and discharging devices inserted into the shaft sleeve edge of the other tooth roller rotor.
Mineral sizers are the guiding, crushing, screening and discharging devices located under the low speed roller rotor. They are designed to ensure the granularity of the material to be crushed. The cutting sieve plate and the guiding cutting riser not only allow the unqualified material to return to the crusher area along the moving path of the low speed roller rotor, but also participate in the crushing operation. That is, the materials that enter the double-tooth roller crushing area for crushing are cut twice or multiple times on the material guide plate through the cutting sieve plate and the guide cutting vertical plate. The qualified materials are discharged from the body through the pores of the sieve plate, while the unqualified materials are brought back to the double-tooth roller crushing area for repeated cutting and crushing through the upper guide plate through the knife teeth arranged on the low-speed rotating low-speed tooth roller rotor. Until the qualified particle size is reached, it is screened to ensure that the qualified rate of the material under the screen reaches 100%.