Vertical belt middle sampling head

Abstract

The invention provides a vertical belt middle sampling head, which comprises a frame structure, a sampling bucket structure and a multiple supporting rollers supporting construction; the sampling head frame is formed into door frame type structure; the sampling bucket is connected to the connection plate on the transmission shaft by a bolt; the transmission shaft is suspended in the middle position on the inner side of the frame by an integrated vertical bearing seat; multiple supporting rollers support is adopted on both sides of the sampling bucket; the belt on the sampling position is shaped more approaching to arc; a discharging opening is disposed on outer side of the supporting rollers. The sampling buckets rotates around the shaft to obtain the materials from the whole section, and dumps to the discharging opening; and completes one sampling period once rotating one cycle. The invention adopts vertical door frame structure, has a flexible mounting position, can be mounted in the whole working intermediate section of the belt conveyor, is not influenced by the central rack of the belt support, is suitable for large-width belt; and the belt is shaped more approaching to arc accordance with the sampling bucket movement track, thus the sampling bucket sampling section is more perfect to has no surplus material.

Description

technical field [0001] The invention relates to a sampling device, in particular to a device installed in the middle of a belt for collecting material samples on a running belt. Background technique [0002] The sampling head in the middle of the belt is installed in the middle of the belt conveyor to collect the materials on the running conveyor belt. The scraper-type sampling head is installed in the middle of the belt conveyor and rotates once according to the set time period to obtain a complete cross-sectional material sample from the running belt conveyor for sampling inspection of the quality of the material. [0003] The existing scraper-type sampling head is a frame-type horizontal structure, which is installed on the intermediate frame in the middle of the belt, and has a small working space. It is mainly used under the conditions of the belt width <1400mm and the conveying capacity <1500t / h. With the increase of the conveying capacity and the larger materia...

AI Technical Summary

Problems solved by technology

The workload of the sampling volume increases, the opening width of the sampling bucket increases with the increase of the sampling particle size, the transmission power increases, the transmission mechanism is bulky, and the installation space of the horizontal structure direct drive is limited, which cannot meet the needs of larger belt conveyors. sampling requirements

Generally, the supporting rollers of the belt conveyor are 35° grooved rollers, which are supported by 3 rollers. Because the rotation direction of the sampling bucket is perpendicular to the running direction of the belt or at a certain angle, there is a difference between the shape of the belt and the movement track of the sampling bucket. There is residual material in the sampling process, and a complete material sample cannot be obtained, resulting in representative deviation

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