SU873013A1 - Loose material sampler - Google Patents

Description

(54) SAMPLIFIER BULK / MATERIAL

I

The invention relates to samplers for bulk materials transported by belt conveyors and can be used in the power industry in controlling the quality of coal burned in power plants.

The closest to the technical essence and the achieved effect to the proposed is a sampler of bulk material transported by a belt conveyor, containing a drive device for sampling, a supporting table installed under the belt in the area of sampling, and a mechanism for pushing the sampled sample to the receiving point 1.

The drawbacks of this sampler are its sensitivity to material heterogeneity, as if a large object, for example, a frozen lump of coal, gets between a device for taking a sample and a tape, supported by a table, it will inevitably break down the mechanisms. In addition, the presence of foreign objects in the material (wire, metal, wood chips) also causes damage to the mechanisms.

The purpose of the invention is to eliminate the possibility of breakage of the sampler large

subject in the material flow at the time of sampling.

The goal is achieved by the fact that in the bulk material sampler containing the drive, sample intake and receiving chute, the sample intake is made in the form of a drum mounted for rotation and equipped with a trough made in the form of a gutter and a spring-loaded lid with its opening mechanism, the rear wall the bucket is designed as an inclined plane.

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FIG. 1 shows the sampler, a cross-section; in fig. 2 shows section A-A in FIG. one.

On the shaft 1, the drum 2 is rigidly fixed with the bucket 3 and the ratchet wheel sector 4, the lever 5 and the unbalance 6. The pusher 7 is rigid

Claims (2)

15 is fixed to the output shaft 8 of the drive. The shaft can be rotated in bearings 9 mounted on brackets 10 welded to the frame of the conveyor 11. The bucket has a lid 12 to which the cam 13 is attached, which interacts with a fixed stop 14. The lid is closed by springs 15. The spring-loaded ratchet 16 is installed, -; bearing bracket. A window 17 is cut in the shape of a bucket in the wall of the drum, through which the rear wall 18 of the bucket is inclined. Receiving estrus 19 is brought to the dumping zone of the selected sample. The sampler works as follows. The actuator 8 is turned on and the pusher 7 through the lever 5, mounted on the shaft 1, removes the drum 2 with the fixed bucket 3, the sector 4 of the ratchet wheel and unbalance 6 from a stable position. The weight of the shaft with the elements fixed on it (hereinafter the rotor) starts to rotate rapidly in the bearings 9, opening the bucket cover 12 due to the interaction rigidly fixed to the bucket cover, the cam 13 with a fixed stop 14. After the bucket enters the material flow, the latter captures bucket and rotates the rotor. At the same time, the bucket is filled with the breakdown, and after the cam has slipped off from the stop by the springs 15, the bucket cover is slammed shut, not allowing the sample to be thrown out of the bucket by inertia. From the reciprocating motion, the rotor is fixed by a spring-loaded ratchet 16, which is applied to the ratchet sector. As the drive operates, the pusher slowly moves around the circumference, rests on the lever again and turns the rotor to its original position, after which the drive turns off. When the drum is turned upside down, a sample is taken through the window 17 in the drum wall along the inclined rear wall 18 of the bucket by gravity into the receiving chute 19. In the case of a bucket between the bucket or lid and the conveyor belt, at the time of sampling a large object, a conveyor belt without under the table, freely deflected, without causing damage to the mechanisms. The positive effect lies in the possibility of taking a sample from a conveyor belt when large pieces of coal hit it and at the same time avoiding breakage of the sampler bucket, Formula 1: A sampler of bulk material containing a drive, a sample intake and receiving leakage, characterized in that the breakdown of the mechanism by a large object that turned out to be in the flow of material at the moment of sampling; the sampling inlet is made in the form of a drum mounted for rotation and equipped with a bucket made in the form of a yellow and a spring-loaded lid with its opening mechanism. 2. The sampler according to claim 1, characterized in that the rear wall of the bucket is made in the form of an inclined plane. Sources of information taken into account in the examination 1. A. Kotkin, N. et al. Machines, devices and mechanisms for testing coal. M., “Science, 1967.