DD150997A3 - METHOD FOR CONTROLLING AND STORING MULTI-STAGE CLASSIFIED COMBINED SUBSTANCES - Google Patents

Abstract

The invention relates to a method for controlling and storing koerniger substances that emerge from any crushing processes, separated by screening in a variety of Korngroeszenklassen, sampled, stored and shipped ready for shipment. According to the invention, the multi-level classed granules are conveyed in a closed conveyor system, automatically sampled and collected in a sectioned container or individual container groups until the quality control has been carried out. The dazugehoerige device consists of trained as a temporary container, which are divided into 2 or more sections and have a pivoting or rotatable chute and task for controlling the system necessary level indicators and facilities for forwarding the Koernung.

Description

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Title of the invention

Process for the control and storage of multistage classified granular substances

Field of application of the invention

The invention relates to a method for controlling and storing multistage grained substances for a plurality of particle size classes, preferably more than 10.

Characteristics of known technical solutions It is known that granular materials such as e.g. Abrasive grains and blasting agents, which result from any grinding process and are to be separated in a multistage classification into a multiplicity of particle size classes, are subjected to screening for their recovery. This screening is usually followed by a temporary storage in portable small containers and a control screening, separated for each particle size class, to meet the quality requirements for a desired plurality of particle size classes. Thereafter, the ready-to-fill filling into transport containers, which are stacked in a temporary storage, in which the manual quality control of the grain size distributions of the individual particle size classes takes place before the grain released by sealing the containers in the shipping warehouse or returned to non-compliance with the quality requirements to the starting point of screening for reclassification .become. ...

It is also known that after screening for the production of granular materials with narrow limits of their particle size classes without a control sieve, the manual quality control of the individual particle size classes takes place,

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bunkering of the granular substances classed in this sense , and the ready-to-consign shipment into transport containers follows. If, in this case, the quality requirements are not met, these particle size classes are returned to repeat the screening.

Known processes have the disadvantage that, starting from the screening, there is a high proportion of manual work with heavy dust nuisance, whereby the quality of the particle size distribution is subject to subjective influences on the large number of grain size classes of the granular materials. Further, manual sampling does not provide any Guarantee for the quality-appropriate particle size classes ·

Object of the invention

It is the object of the invention, by a comparison with the prior art improved procedure the. To carry out the control and storage of multistage grained substances continuously and without manual effort in order to save working time and to improve working conditions

! 0 and achieve an increase in quality by eliminating the subjective influences.

Explanation of the essence of the invention

The object of the invention is to provide a method.

T5, which allows sieving continuously accumulating granular substances with a plurality of multistage classified grain size classes in limited quantities in containers intermediate until the test result is present and thus the way of further processing can be set ·

This object is achieved procedurally by the fact that the classification of the granular substances, for example by sieving, continuously and in several stages within narrow limits of the particle size classes carried out by means of an automatic

For each grain stream, whose direction of conveyance is advantageously arranged using gravity in the vertical direction, a sample is taken, which is stored in a container for quality control. Afterwards, the grain stream reaches the intermediate storage container.

\ 0 containers are divided into sections to produce a corresponding grain

size group until the presentation of the result of the control of a granulation. It is also possible to dispense with the sections split containers and arrange individual groups of containers as a temporary storage · For both solutions, however, is a condition that the container volume and the number is tuned to the timing of the control technology to ensure the desired continuous operation. From the interim storage facility, the grain sizes are either discharged into finished bins according to the result of the inspection or returned to classification for non-quality grain. From the finished bunker, the ready-to-fill and stacking takes place on the shipping warehouse. The proposed method additionally offers the simple possibility of obtaining defined grain mixtures by deducting quality-matched grains from the finished bunkers via separate metering devices and combining them into defined grain mixtures.

Taking into account the respective application, this solution according to the invention contains a shortening of the process. In this case, the intermediate storage container divided into sections is to be regarded at the same time as finished goods container. After the presentation of the result of the inspection, either the non-quality grade grain is returned to the classification or the quality grade grain is filled ready for shipment. FIG. 1 shows the inventive solutions. The device consists of three groups. Group 1 comprises an automatic sampler including sample container conveyor. Group 2 comprises the intermediate storage containers divided into sections, including a pivotable or rotatable feed chute and level indicators necessary for the control of the plant and the means for passing the granules in accordance with the present quality decision. The group 3 consists of a finished bunker including the metering and conveying device for the production of defined grain mixtures. Figures 2 and 3 show the device.

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embodiments

example 1

A grain mixture of a substance obtained after comminution is classified in continuous mass flow on screens in a variety of particle size classes. The particle size classes produced after the sieve classification are continuously sampled according to FIGS. 2 and 3 via a downpipe 1 and a sampler 2, the individual particle size class being determined in one of the three sections of the divided interim storage

D container 3 collected · During the filling of a container section is simultaneously created a bulk sample in the sample container 4 ·

let a section of the intermediate storage container filled (level indicator: - full -), the sampling is interrupted, the filled sample container 4 on the sample container feeder belt 5 on the sample container collection belt 6 and further to control the grain quality promoted · The returning on the bottom of the sample container feeder belt cam 7 rotates about a three-piece turnstile 8 the task chute 9, which is incorporated in the container lid 10, by 120 ° on. With this, the continuous grit flow is directed to the next tank section (prerequisite: level indicator: - empty -). On the top of the drive cam 7 pushes an empty sample container 4 from the sample container magazine 11 and brings him under the Probenähmegerät 2 · over the stop of a limit switch, the sampling is initiated. After the quality control is carried out, the empty sample containers 4 are returned to the sample container magazine 11 via the sample container return conveyor system 12. · After the result of the control, the flow of the individual grains is controlled. If the contents of the examined intermediate storage container section meet the quality requirements of the corresponding particle size class β, this is transferred via a folding chute 13 »The downpipe 15 and the Zwisehenbunkersektionsverschluss 14 out in the Eertiggutbunker 16 and passes from there via another downpipe 17 ready for shipment. If the examined quantity of granules does not meet the quality requirements, it is returned via the rip chute 13 and a conveyor belt 18 for re-sieving.

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Example 2

In an extension of Example 1, in which the ready-to-fill filling of the individual quality grains on the Pertiggutbunker 16 and the downpipe 17 runs, certain grains are additionally combined by dosed withdrawal by means of a metering device 19 to defined Korngeraischen on a Sammelforderer 20.

Example 3,

Based on Example 1, after the intermediate storage container 3 divided into sections, the ready-to-fill filling from the downpipe 15 takes place once the quality control of the granulation in the container section has proceeded positively.

Claims (3)

- ° - Z 1 t> 4 VV Inventions claim 1 method for the control and storage of multistage classified granular materials for a variety of grain size classes, preferably of more than 10, after a classification, characterized in that the multi-graded graded grains in a closed conveyor system, preferably using gravity, automatically sampled , collected in a container designed as a temporary storage and divided into sections or individual groups of containers and stored after quality control of grain sizes in prefabricated bunkers and then bottled ready for shipment · 2 * Method according to item 1, characterized in that the quality-oriented granules are filled ready for dispatch as ready-made product from the container or individual container groups designed as intermediate storage and divided into sections. 3 · Method according to item 1, characterized in that in addition from the finished bunker certain grain sizes are combined by metered deduction to defined grain mixtures. For this 3 pages drawings.