Wave Roller Fine Material Pre-screening Machine

Abstract

The invention provides a fluctuating roller type fine stuff pre-screening machine and belongs to the technical field of mining machines. The fluctuating roller type fine stuff pre-screening machine comprises a box, a set of screening rollers and a power mechanism. A feeding port is formed in the left end of a box cavity, and a discharging port is formed in the right end of the box cavity. The screening rollers are formed by screening roller shafts, roller shaft drive chain wheels and a set of roller shaft sleeves. A front shaft head of one screening roller shaft is connected with the power mechanism. The fine stuff pre-screening machine is characterized by further comprising a set of screening roller cleaning plates which correspond to the positions below the screening rollers to be fixed into the box cavity and correspond to the roller shaft sleeves. The roller shaft sleeves are provided with a plurality of round and oval screening flanges. The total number of the round screening flanges is more than the number of the oval screening flanges by one. The 90-degree staggering relation is formed between the oval screening flanges on the roller shaft sleeves on every two adjacent screening roller shafts. Working intensity is reduced, and the screening working efficiency is guaranteed; sticky and wet substances adhering to materials can be separated and stripped by the roller shaft sleeves easily; installing is convenient, and the installing effect is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of mining machinery, and in particular relates to a fluctuating roll type fine material pre-screening machine, which is matched with a hammer crusher, and pre-screens the fine mineral materials that are not to be crushed in the ore before entering the hammer crusher. Background technique [0002] As is known in the ore mining industry, raw rough ore often contains significant amounts of fines which do not need to be crushed in practice by a crusher, especially if the fines have a high moisture content and / or are rich in Abrasive substances, so if they are not screened out in advance and directly enter the crusher for crushing with large ore materials, the following technical problems are likely to occur: one is to increase the working load of the crusher; the other is to aggravate the wear of the crusher And bonding will even frequently cause the blockage of the crushing working chamber of the hammer crusher...

AI Technical Summary

Problems solved by technology

[0002] As is known in the ore mining industry, raw rough ore often contains significant amounts of fines which do not need to be crushed in practice by a crusher, especially if the fines have a high moisture content and / or are rich in Abrasive substances, so if they are not screened out in advance and directly enter the crusher for crushing with large ore materials, the following technical problems are likely to occur: one is to increase the working load of the crusher; the other is to aggravate the wear of the crusher And bonding will even frequently cause the blockage of the crushing working chamber of the hammer crusher, such as blocking the crushing working chamber with paste; the third is to affect the crushing efficiency of the crusher and inhibit the production capacity; the fourth is to affect energy efficiency, that is, to cause waste of electric energy

[0005] But above-mentioned CN101972684A has the shortcoming of following two respects: one, because the water content of the material mixed in the aforementioned mineral materials such as limestone, marl, chalk, mudstone and the like is quite high and viscous is bigger, thus in practice During the pre-screening process, it is very easy to get stuck. If the machine cannot be stopped and cleaned in time, there is a risk of damage to the power mechanism. , the work intensity of the online workers is significantly increased; secondly, because only the cams on a set of transition rollers and a set of discharge rollers are arranged circularly in a cross-shaped staggered manner, the adjacent transition rollers and the cams on the discharge rollers are ignored. The relationship between the cams on the adjacent discharge rollers is not enough to reflect the ideal fluctuation effect on the material when the pre-screening mechanism is in working condition, and finally affects the screening rate of the unbroken material; third, due to the setting The structure of the roller sleeve (the patent is called the cam) on the screening roller shaft (the patent is called the feeding roller shaft) is unreasonable, and it needs to be assembled on the screening roller shaft one by one, so not only the installation is labor-consuming and time-consuming, but also the installation effect is affected accordingly. Impact

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