SU1179138A1 - Sampler of loose materials from conveyer belts - Google Patents

Abstract

SAMPLE BULK MATERIALS WITH CONVEYOR BELTS, containing a 3 h 12 frame, a platform hinged on the frame; The mechanism for specifying the trajectory is made in the form of a single-shaft shaft, the middle neck of which is kinematically connected with the pendulous rod, and is equipped with cams in contact with a roller reinforced on the platform. (L sec from 00 00

Description

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This invention relates to sampling, in particular to samplers used for sampling bulk materials from conveyor belts and conveyor belts.

The purpose of the invention is to simplify the design.

1 shows a sampler, a general view {in FIG. 2 is a section A-A in FIG. 1; FIG. 3 is a section BB in FIG. 1; Fig. 4 is a diagram of the movement of the selector organ at the intersection of the test stream of material.

The sampler of bulk materials consists of a frame 1 on which platform 2 is hinged, on which roller 4 is fixed by means of axis 3. The satellite 5 is connected to the platform by hinge with the selection body 6. The mechanism for setting the movement body of the selecting body is made of a carrier 7, one the end of the single-shaft shaft 9 connected to the middle neck and the other with the rod 5. The single-shaft shaft 9 is attached to the frame 1 by means of bearing supports 10 and is connected to the drive (conventionally not shown). On the extreme necks 11 of the single-shaft shaft 9, two cams 12 are attached, which are in contact with the roller 4. The selector body 6 consists of a cover 13 and side walls 14 and 15. Cross section grooves 16 are made in a crush 13, which make it possible to transfer side walls 14 and 15 changing the size of AND and fixing them with respect to the edge 13 using brackets 17 belonging to the walls 14 and 15, and a boon 18. The selection is made from the selection tape 19, and the selected material is poured into the inlet 20. The resizing is necessary because representativeness of the sample taken is possible only under conditions when the opening width H of the selection organ 6 is greater than or equal to the two particle sizes of the test

material.

I. If, for example, a selection body is made that satisfies the described condition for all possible sizes, then the selection body will take a sample of material from the flow, the mass of which is very large compared to the required one, which will lead to loss of

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grated product as a result of its overgrinding.

The proposed design of the selector organ allows 5 to quickly control the mass of the sample, excluding unnecessary losses of the enriched product.

At the intersection of the material flow with a conveyor belt, the conveyor belt is 19 0 - a force of prop pressure acts on the selector body 6 (ladle)

material.

With an equal speed of movement of the conveyor belt Od and the speed of movement of the selector organ (bucket) V, this track of the bucket 6 is located at an angle of 45 to the direction of movement of the bucket, as it intersects the flow perpendicular to the longitudinal axis of the conveyor belt.

Assuming bucket speed V | infinitely large, the trace left by him on the conveyor belt is perpendicular to its longitudinal axis.

5 Therefore, if the bucket wall, which tests the material support, is positioned at an angle ensuring the relative rest state of the material and the wall, the force of the material support

0 is excluded.

Thus, the angle of the bucket wall to the direction of its movement, excluding the prop of the moving material, must be equal to the arctangent of the ratio of the speed of movement of the conveyor belt to the speed of movement of the selector.

The arrangement of the two walls of the bucket at an angle equal to the arctangent of the ratio of the belt speed to the speed of the bucket makes it possible to eliminate the material under the conveyor belt, as well as when installing the sampler on either side of the conveyor. ra ..

The sampler is operated by the next body.

When a command is received from the control panel, the drive is activated and rotates the single-member shaft 9 clockwise. At the same time, the cams 12 raise the platform 2 and enable the selector body 6 to pass unhindered under the flow of test material on the belt 19.

With further rotation of the single-shaft shaft 9, the cams 12 lower

platform 2, and the sampling body (bucket; 6 crosses the material flow and dumps the selected sample portion into the receiving chute 20. After that

For incrementing dffufffeNuff / conveyor belt

limit switches turn off the drive of the sampler. At the next command from the control panel, the cycle is repeated.

6-6

(rig.

Claims (1)

Sampler of bulk materials from conveyor belts, comprising a frame, a platform pivotally mounted on the frame, a pendulum rod with a sampling organ, a mechanism for specifying the trajectory of the sampling organ, characterized in that, in order to simplify the design, increase reliability and ensure representativeness of the samples taken, the trajectory setting mechanism is made in the form of a single-shaft, the middle neck of which is kinematically connected with the pendulum rod, and is equipped with cams in contact with the roller mounted on the platforms e. g ω '0 fig 1 1 1179138