Double-geared roller clay crusher

Abstract

The invention discloses a double-geared roller clay crusher. The crusher comprises a fixed roller and a movable roller, wherein the fixed roller is connected with a fixed roller speed reducer through belt transmission, and the fixed roller speed reducer is driven by a fixed roller motor; the movable roller is connected with a movable roller speed reducer through belt transmission, and the movable roller speed reducer is driven by a movable roller motor; the fixed roller and the movable roller are provided with a crushing toothed plate respectively, a plurality of rows of crushing teeth are arranged on the crushing toothed plates along the axial directions of the rollers, and crushing teeth on the fixed roller and the movable roller are uniformly and circumferentially distributed along the rotary centers of the rollers; and the crushing teeth of the fixed roller and the crushing teeth of the movable roller crush materials in the axial directions of the rollers in a mode that tooth tops and tooth valleys are engaged. In the crusher, long teeth and short teeth are alternately arranged as a tooth profile of each crushing toothed plate; materials among clearances of the short teeth are removed by the long teeth; and scrapers are arranged on the bottoms of the two crushing rollers for scraping materials among the rows of crushing teeth in the axial directions of the crushing toothed plates so as to ensure smooth crushing.

Description

technical field [0001] The invention relates to a crusher, in particular to a double-toothed roller clay crusher. Background technique [0002] In order to provide raw materials for the cement production line, a double-toothed roller crusher is currently used, which is applied to the 5000 tons / day cement production line for clay, siltstone or coal mine classification and crushing. [0003] However, before the double-toothed roller crusher is specially designed for crushing a special material-clay, there are the following disadvantages: [0004] 1. Due to the characteristic of clay as the processed material, it is difficult to crush, so a larger crushing ratio is required in the primary crushing to reduce the number of crushing passes. Generally, the finished material is 15mm, and only two crushing passes are required, that is, the feed particle size is less than 800mm. The material size is less than 80mm for the first pass, and the feed particle size is less than 80mm for t...

AI Technical Summary

Problems solved by technology

[0005] 2. The viscous material often fills the gap between the teeth on the surface of the roller, so that it is very laborious for the crushing teeth to bite into the material, and the feed particle size is limited;

[0006] 3. In order to ensure that the tooth tips and the tooth valleys of the two pairs of roller teeth can be relatively engaged in the axial and radial directions, the transmission must be a single transmission plus a synchronous meshing long gear to drive the passive roller; when the material is viscous, the feeding is slow, reducing the When the toothed roller rotates at a high speed, the torque of the shaft and roller of the single drive is not enough, often resulting in stuffy car;

[0007] 4. The adjustment of belt tension is small. When the gap between the teeth is filled and the material is forcibly bitten in, the retreat stroke of the movable roller is much larger than that of crushing dry and brittle materials, so that the movable roller loses power and cannot be effectively crushed. ;

[0008] 5. When crushing viscous materials, due to the above reasons, the movable roller moves frequently, causing the seals of the hydraulic cylinder and the seals of the reversing valve to be easily damaged;

[0009] 6. When the clay is crushed, the material stays in the crushing chamber for a long time, and the feeding is slow. Compared with the crushing of dry and brittle materials, the power consumption and torque are large, and the bearing is easy to be damaged;

[0010] 7. After dust and viscous materials enter the bearing, it is easy to cause the bearing to have a short service life and be easily damaged. The general sealing method of the conventional double-toothed roller crusher, that is, the felt ring seal of the current layer, is no longer applicable

[0011] To sum up, the double-toothed roller crusher is not suitable for crushing clay materials with high moisture content and high viscosity.

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