Adjustable double-valve-element dust suppression hopper device and dust suppression method thereof

Abstract

The invention discloses an adjustable double-valve-element dust suppression hopper device and a dust suppression method thereof. The adjustable double-valve-element dust suppression hopper device comprises an outer hopper body, a hopper cover, an outer valve element, an inner valve element and a material distribution cone. The outer hopper body is of a vertically-arranged funnel-shaped structure,and a hopper cover is horizontally arranged at the upper end of the outer hopper body; a feeding hole is formed in the upper surface of the hopper cover and is communicated with the interior of the outer hopper body; the material distribution cone is coaxially hung at the position, close to the upper position, in the outer hopper body, the material distribution cone is of a conical structure, andthe conical surface of the material distribution cone is arranged right opposite to the feeding hole; the outer valve element is coaxially arranged at the position, close to the lower position, in theouter hopper body and is of a hollow annular structure with an upper opening and a lower opening, and the distances between the outer surfaces of the periphery of the outer valve element and the inner circumferential face of the outer hopper body are consistent; and the inner valve element is coaxially arranged in the outer valve element and is of a conical structure, and the distances between the conical surface of the inner valve element and the inner surfaces of the periphery of the outer valve element are consistent. According to the adjustable double-valve-element dust suppression hopperdevice, through cooperative use of the inner valve element and the outer valve element, dust is prevented from overflowing, and the phenomenon that materials are piled up and overflow is prevented.

Description

technical field [0001] The invention relates to the technical field of bulk material loading and unloading equipment, in particular to an adjustable double valve core dust suppression hopper device and a dust suppression method thereof. Background technique [0002] During the loading and unloading of bulk materials in ports, hoppers are often used to concentrate the materials before loading them into trucks and ships. However, the size of the discharge port of the general hopper is fixed, and only when the feed flow rate is exactly equal to the maximum discharge flow rate can a good dust suppression effect be achieved. If the feed flow rate is less than the maximum discharge flow rate, no accumulation can be formed in the hopper, and the falling speed of the material is fast and loose, and it is difficult to achieve the dust suppression effect; if the feed flow rate is greater than the maximum discharge flow rate, the excess material will continue to accumulate in the hoppe...

AI Technical Summary

Problems solved by technology

However, the size of the discharge port of the general hopper is fixed, and only when the feed flow rate is exactly equal to the maximum discharge flow rate can a good dust suppression effect be achieved.

If the feed flow rate is less than the maximum discharge flow rate, no accumulation can be formed in the hopper, and the falling speed of the material is fast and loose, and it is difficult to achieve the dust suppression effect; if the feed flow rate is greater than the maximum discharge flow rate, the excess material will continue to accumulate in the hopper , easily lead to material spillage

In addition, under normal circumstances, the feeding rate of bulk material transport machinery fluctuates greatly, and it is difficult to achieve uniform feeding, resulting in poor dust suppression effect of general hoppers; especially in the case of skewed feeding, the material at the discharge port will be Larger deflection angles are thrown outwards, causing a lot of dust

Therefore, the hopper is prone to loose materials and a large amount of dust overflow during the discharge process, which will cause environmental pollution and affect the health of on-site workers.

[0003] In view of the above problems, dust control is generally carried out by installing a telescopic chute at the discharge port, but the effect is average and the service life is short.

There is also a single spool in the hopper, and the position of the spool is controlled by a spring to achieve real-time control of the size of the discharge port. Although this method can achieve a good dust suppression effect, its structure is complicated and it is difficult to The lower bucket body is prone to lateral displacement during blanking, causing the material at the outlet to fall deflected, thus affecting the dust suppression effect

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