DD253598A1 - METHOD FOR THE EQUAL LOADING OF A BELT BELT FOLDER WITH A SCHUETTGUTSTROM - Google Patents

Abstract

The method is used for uniform loading of a Gurtbandfoerderers with a Schuettgutstrom whose volume varies at equal intervals and with almost constant distribution. Their field of application lies where a mining machine with a low number of shoes gives up on a subsequent Gurtbandfoerderer at high speed. The possibility of using conveyor systems of smaller construction sizes is intended to save material and electrical energy in industrial mass transport. This is achieved in that the incoming Einzelschuettung divided into two equal Teilschuettungen, the Teilschuettungen be offset by acceleration benders in their mutual position to each other on the abfoerdernden Gurtbandfoerderer that superimpose the maxima of a Teilschuettung with the minima of the other Teilschuettung.

Description

where Ig ₁ = 1-J2 + Δ1

 For this 1 page drawings

Field of application of the invention

The invention relates to the uniform loading of a belt conveyor with a bulk flow whose volume varies at equal intervals and with approximately constant distribution. Its field of application is especially where a mining device with a low number of beds gives up on a subsequent belt conveyor with high belt speed.

Characteristic of the known state of the art

To avoid overfilling, it is customary to design the conveyor systems according to the expected, but only occurring for a short time delivery volume peaks of extraction equipment. This procedure has the crucial shortcoming that the design of the belt systems leads to stochastic delivery volume peaks for over-dimensioning, an increased cost of materials and for underutilization of the equipment and thus to an uneconomic operation. In order to achieve a uniform material flow, storage elements (buffer bunker) can be installed between the extraction unit and the conveyor system. According to DE-PS 1303845 a longitudinally displaceable intermediate band is provided instead of a buffer bunker, which takes over the uneven Fördergutstrom from Zubringerband and delivers to a weiterförderndes band by a movable together with the intermediate belt belt weigher is located at the Aufgabestelle. The traversing speed is regulated as a function of the measurement result of this belt weigher, so as to obtain a uniform loading of the further conveying belt. This should be made even over a longer period pending fluctuations in the supplied Fördergutstromes.

The disadvantage is that the technical complexity is relatively high because of the belt to be arranged in the conveyor belt to be arranged belt scale. Therefore, it is proposed in DE-OS 2804585 to arrange the belt scale stationary in front of the discharge point on the feeder belt. The travel speed and the conveying speed of an intermediate belt are regulated.

The solution requires the installation of a movable belt, a belt scale, a controllable drive for the intermediate belt, a belt speed control device on the intermediate belt, optionally another pivotable intermediate belt and the control means for changing the travel speed and / or the belt speed in dependence of the measurement results Belt scale a very high implementation cost. A further disadvantage is that their application is not suitable for opencast mining equipment in the range of about 0.33 to 2 beds per second, because of the risk that dangerous vibrations in the construction system arise.

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Object of the invention

The aim of the invention is to save by the use of belt systems of smaller sizes material and electrical energy in industrial mass transport.

Explanation of the essence of the invention

The invention has for its object to provide a method for uniform loading of a belt conveyor with a flow of bulk material, with which each single bed is distributed on the conveyor belt conveyor. According to the invention, the object is achieved in that the incoming from a belt conveyor or directly from the extraction unit single bed is divided into at least two equal partial beds, the partial bed are offset by downstream acceleration bands in their mutual position to each other on the abfördernden Gurtbandförderer so that in each case the maxima which overlay one partial bed with the minima of the other partial bed. For the speeds of the acceleration belts for two partial beds, the following applies:

^VB1⁼ and

2. ο OU

^V B2

60

where lsi = Ib ₂ + Al

 Next are the relationships:

Ib2 = j Is2; Vb ₁ _ Js ₁

Vb ₂ Is ₂

Where:

i. = Number of beds = intervals on the conveyor length of the belt conveyor GBFBI,

which brings about equalization, j = number of beds = intervals on the conveying path length of the belt conveyor GBF B 2,

which causes the homogenization.

l ₈ i; 2 = equalizing conveyor length on the GBFB1; 2 l _{sl; 2} = equal distance bulk positions at the FBFBI ^ t bulk distance) ΔΙ = distance of the dividing duties related to the longitudinal axis of the GBFBI)

n _s = dredging number ·

t _ns = bedding interval tns =

Due to the different speeds of the partial beds on the two acceleration belts, associated positions of the partial beds return different paths in the same time and, after different times, take the place of the reunification. The originally associated positions of the partial beds are deposited after the reunification in a certain, on the respective belt conveyor no longer variable distance. This distance must be exactly half the packing distance or any odd number ζ of half the packing intervals.

embodiment

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawings shows:

Fig. 1: two individual beds on a belt conveyor in an idealized distribution (two positive half sine waves) Fig.2: the position of the two partial beds to each other after the homogenization process Figure 3: the sum of the two partial beds, which corresponds to the uniformized volume flow.

Schematically, the process can be explained by two positive sinusoidal half-waves.

In Figure 1, two half sine waves are shown showing two individual beds on a belt conveyor in an idealized distribution. The dashed line indicates the required delivery volume of the belt conveyor. π is with the

Equate the bed spacing.

FIG. 2 shows the position of the two partial beds relative to one another. FIG. 3 shows the sum of the two partial beds, which corresponds to the equalized volume flow. The maximum possible reduction of the required delivery capacities for a sinusoidal distribution of charge is evident.

Claims (2)

1. A method for uniform loading of a belt conveyor with a bulk material flow, the volume varies at equal intervals and with approximately constant distribution, characterized in that each incoming single bed is divided into at least two equal partial beds, the partial beds preferably by acceleration bands in their mutual position to each other be offset on the conveyor belt conveyor conveyor so that each superimpose the maxima of a partial bed with the minima of the other partial bed. 2. The method according to claim 1, characterized in that with two equal part charges for the speed of the acceleration bands ^V B1 ^{= 1} Bi " ⁿ s and i ο 60
_ (I ₁ -AD η