Combined sample making machine

Abstract

The invention discloses a combined sample making machine which comprises a supplied material belt conveyor, a first-grade crushing mechanism, a first-grade division mechanism, a second-grade division mechanism, a second-grade crushing mechanism and a third-grade division mechanism, wherein the first-grade crushing mechanism is connected with the supplied material belt conveyor and comprises a striking plate, scrapers slidably matched with the striking plate, a connecting rod hinged with the scrapers, and a driving belt wheel; one end of the connecting rod is eccentrically hinged with the driving belt wheel; the first-grade division mechanism is connected with the first-grade crushing mechanism and passes through a vibration feeder; the second-grade division mechanism is connected with thefirst-grade division mechanism; the second-grade crushing mechanism is connected with a second-grade division sample retaining opening; and the third-grade division mechanism is connected with the second-grade crushing mechanism. The scrapers of the combined sample making machine provided by the invention can work automatically, so waste of human resources can be avoided; as the scrapers move up and down, materials drop off under the action of gravity and re-piling of the materials can be avoided; the operation frequency of the scrapers is controlled according to the rotating speed of the driving belt wheel; the moving frequency of the scrapers is higher than the manual operation frequency, therefore, a few of materials which are piled on the striking plate can be cleaned timely.

Description

technical field [0001] The invention relates to the technical field of coal machinery, in particular to a combined sample making machine. Background technique [0002] With people's demand for resources, the coal industry has been vigorously developed, and the resulting coal machinery has also developed rapidly. As a kind of coal machinery, the joint prototype machine plays an important role in coal experiments. [0003] Such as figure 1 As shown, the existing joint sample preparation machine generally includes a feeding belt conveyor 11 , a primary crushing mechanism 12 , a primary shrinking mechanism 13 , a secondary crushing mechanism 14 , a secondary shrinking mechanism 15 and a sample collection box 16 . Among them, the primary crushing mechanism 12 adopts a hammer crushing method; the secondary crushing mechanism 14 adopts a roller crushing method; the primary shrinking mechanism 13 and the secondary shrinking mechanism 15 both adopt a groove type shrinking mechanism....

AI Technical Summary

Problems solved by technology

[0013] 3. The whole water sampling is not the whole process sampling, and the samples taken are not representative;

[0014] 4. The adjustment of the reduction ratio needs manual adjustment, which is inconvenient to operate and the reduction ratio is not accurate;

[0015] 5. The secondary crushing adopts roller crushing, the sieving rate of the sample is not high, can not meet the national standard requirements, and needs to be crushed again

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