Gravel screening device

Abstract

The invention discloses a gravel screening device and belongs to the technical field of screening devices. The gravel screening device is characterized by comprising a discharging outlet, a conveyingbelt and a collection device; the conveying belt is used for screening gravels of different sizes; the conveying belt comprises a driving wheel set and at least one driven wheel; the driving wheel set comprises driving wheels corresponding to the driven wheels one by one; the driving wheels are connected with the driven wheels through two chains; a plurality of supporting rods are arranged symmetrically between the two chains; the supporting rods and the chains are connected through reset springs; the conveying belt is provided with a convex block enabling the supporting rods to rotate towards the outer side of the conveying belt and penetrating through the lower half part of the conveying belt; the discharging outlet is formed in the upper portion of the driving wheel set; and the collection device comprises gravel collection positions below the driven wheels and corresponding to the driven wheels one by one and waste collection positions arranged below the driving wheel set. The gravel screening device has the characteristics of filtering and separating gravels of different grain sizes and preventing the gravels from blocking operation of the conveying belt.

Description

technical field [0001] The present invention relates to a screening device, more particularly, to a crushed stone screening device. Background technique [0002] At present, the crushed stone used in concrete production is multi-stage crushing of large ores by using a multi-stage crusher. However, most of the existing crushers do not screen the crushed ore after crushing the ore, but directly stack it for use. Because crushed stone of different particle size can be used for concrete production of different buildings, subdividing crushed stone of different particle size for concrete processing can further improve the use value of crushed stone and improve the quality of finished concrete. Therefore, devices such as screens are used to separate the crushed stones with large differences, but such screening is not meticulous enough, especially for some crushed stones with a particle size similar to the screen holes, which are easy to get stuck on the screen and affect the scree...

AI Technical Summary

Problems solved by technology

Therefore, there are devices such as sieves for separating gravels with large differences, but such screening is not detailed enough, especially some gravels whose particle size is similar to that of the sieve, are easy to get stuck on the sieve, affecting the screening effect

Moreover, the gravel at the bottom cannot prevent the mixing of dust and weeds etc. hidden inside the large stones, thereby reducing the use efficiency of the gravel.

In order to facilitate transportation and reduce the accumulation of dust, screening is often carried out during transmission. Similarly, the gap on the conveyor belt will allow some gravel to fall inside the conveyor belt, affecting the rotation of the rollers.

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