Intelligent multi-stage crushing and screening device for raw materials for asphalt concrete production

Abstract

The invention discloses a raw material intelligent multi-stage crushing and screening device for asphalt concrete production, and relates to the technical field of raw material intelligent crushing, the raw material intelligent multi-stage crushing and screening device comprises a bearing device, a material arrangement device, a material grinding device and a cutting hob, the bearing device is connected with the material arrangement device, the material grinding device is connected with the bearing device, and the cutting hob is movably connected with the bearing device. The bearing device comprises a crushing box and a screening seat, the crushing box and the screening seat are communicated with the feeding pipe, a hob groove is formed in the crushing box, the cutting hob is slidably connected with the hob groove, a feeding port and a centrifugal cavity are sequentially formed in the crushing box, the feeding port is communicated with the feeding pipe, and the end, away from the feeding pipe, of the feeding port is communicated with the centrifugal cavity. The cutting hob faces the communicating position of the feeding port and the centrifugal cavity, the large raw materials are cut into strips through the cutting hob, automatic material arrangement is carried out, through active stress adjustment, the strip-shaped raw materials are crushed through the particle raw materials, automatic material changing is carried out, and the material crushing uniformity is improved.

Description

technical field [0001] The invention relates to the technical field of intelligent crushing of asphalt concrete raw materials, in particular to an intelligent multi-stage crushing and screening device for raw materials for asphalt concrete production. Background technique [0002] Concrete asphalt is commonly known as asphalt concrete. It is a new type of building material that is mixed by manual selection. It is mixed with certain gravel, stone chips or sand, mineral powder, etc. in road asphalt, and is made by stirring. Before mixing and stirring, the raw materials need to be crushed to make the raw materials into small particles, which is convenient for mixing and stirring with asphalt of different particle sizes and grades of asphalt concrete production. [0003] However, when the raw materials are crushed, due to the high hardness of the raw materials and the indeterminate shape, when the raw materials are crushed, it is easy to cause uneven crushing and form raw materi...

AI Technical Summary

Problems solved by technology

[0003] However, when crushing raw materials, due to the high hardness and indeterminate shape of the raw materials themselves, it is easy to cause uneven crushing and form raw material particles with large size differences when crushing. It is necessary to add screening stations, mostly by manual or mechanical means. Screening, automatic screening is not possible, and the unqualified crushed particles are screened out, which affects the crushing efficiency of raw materials. Secondary crushing is still required after screening larger crushed particles, while smaller crushed particles cannot meet the use requirements. It is impossible to automatically adjust the local stress of the broken particles to ensure the uniformity of the particles, which is easy to cause waste and increase the cost of the enterprise, and it is inconvenient to automatically adjust the particle size according to the needs

[0004] In addition, due to the indeterminate shape of raw materials, when crushing raw materials with high roundness, due to the small contact area between the crushed material cavity and the circular raw materials, it is easy to concentrate the stress on the crushing force surface, resulting in large deformation and affecting continuous crushing. quality

Images