Multi-stage centrifugal screening equipment for sand and stone impurity removal

Abstract

The invention relates to the technical field of civil engineering, in particular to multi-stage centrifugal screening equipment for sand and stone impurity removal. The equipment comprises a machine body, a screw conveyor body extending up and down is fixedly arranged at the left end of the machine body, and a screw conveyor cavity extending up and down is formed in the screw conveyor body. According to the multi-stage centrifugal screening equipment for sand and stone impurity removal, in the high-speed rotation process of a screening barrel, large sand in the screening barrel can rotate at a high speed along with the screening barrel and is thrown out under the action of centrifugal force, in this way, the sand can be rapidly screened, manual throwing in a traditional sand screening mode is replaced, and the effect of saving time and labor is achieved; the multi-stage screening barrel can effectively sort multi-stage sand, the requirements of workers for different kinds of sand are met, the sand falling into the screening barrel can be effectively dried, meanwhile, light impurities are screened out, and the dried sand is lighter and is more easily thrown out of the screening barrel, so that the screening efficiency and quality are greatly improved; and a scrap iron removing mechanism can remove scrap iron in the sand.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a multi-stage centrifugal screening equipment for removing impurities from sand and stones. Background technique [0002] The thickness of sand refers to the average thickness of sand particles of different particle sizes mixed together. Usually there are coarse sand, medium sand and fine sand. Grain gradation of sand refers to the matching ratio of sand size particles. Well-graded sand can not only save cement, but also improve the compactness and strength of concrete and mortar. [0003] The traditional sand screening method is that after the sand net is specified, the sand is manually put into the screen bit by bit with a shovel, and the fine sand will pass through the screen and fall into the collection device, while the stones and larger impurities in the sand will be collected. The sieve blocks and stays on the surface of the sieve, so it is time-consuming and ...

AI Technical Summary

Problems solved by technology

[0003] The traditional sand screening method is that after the sand net is specified, the sand is manually put into the screen bit by bit with a shovel, and the fine sand will pass through the screen and fall into the collection device, while the stones and larger impurities in the sand will be collected. The sieve blocks and stays on the surface of the sieve, so it is not only time-consuming and labor-intensive to sieve the sand bit by bit, but also the sand sieving effect is not good, which leads to the problem of poor practicability of the traditional sand sieving method

[0004] Some existing sand screening machines cannot dry the sand in advance, and the wet sand sticks together, which has a great impact on the sand screening effect, and, on the construction site, there are some iron filings in most of the sand, which is not suitable easy to remove

In addition, the existing sand screening machine can only screen out one type of sand, which does not meet the requirements of workers for multiple types of sand. Therefore, it is necessary to design a multi-stage centrifugal screening equipment for sand and stone removal to improve the above problems.

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