CN114904353A

CN114904353A - Material dust suppression system

Info

Publication number: CN114904353A
Application number: CN202210603983.2A
Authority: CN
Inventors: 马慧涛; 陈汗青; 朱夏宁; 孟令起; 李响; 季志坚; 邓加强; 王江涛; 张少春
Original assignee: Beijing Guodian Futong Science and Technology Development Co Ltd
Current assignee: Beijing Guodian Futong Science and Technology Development Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-08-16

Abstract

The invention discloses a material dust suppression system, which comprises a negative pressure dust collection system and a dry fog dust suppression system, wherein the negative pressure dust collection system comprises a dust collection cover suspended above a dust raising point, and a plurality of dust collection pipelines are arranged on the dust collection cover; the dry fog dust suppression system comprises a dry fog pipeline which is positioned below the dust collection cover and used for conveying dry fog mixed liquid, and a plurality of dry fog nozzles are arranged on the dry fog pipeline. The material dust suppression system has a better dust suppression effect, and is energy-saving and environment-friendly.

Description

Material dust suppression system

Technical Field

The invention relates to a material dust suppression system, in particular to a negative pressure dust collection and dry fog dust suppression combined material dust suppression system.

Background

The existing material dust suppression system mainly comprises four modes of negative pressure dust absorption and suppression, wet material dust suppression, spraying dust suppression and dry fog dust suppression, wherein the wet material dust suppression mode has influence possibility on the chemical properties of the material, so that the material types capable of adopting the mode to suppress dust have great limitation; the dust absorption and suppression mode has strong dust suppression capability but smaller action range; the spraying dust suppression and dry fog dust suppression modes have wider action range and higher cost.

The dust suppression modes can achieve better effect through combination, but the combination in the prior art is only the superposition of the dust suppression modes, so that excellent progress in effect cannot be achieved, a plurality of dust suppression systems are provided, the equipment and the pipeline are complex in arrangement, and environmental protection and energy conservation cannot be achieved. The environmental-friendly intelligent unloading system applied to the sand and stone stock ground disclosed by the publication number CN111153231A adopts a combined mode of spraying dust suppression and dust absorption dust suppression to suppress dust, but only the superposition of two dust suppression modes is achieved in the effect, and no better dust suppression effect is achieved, such as the dust diffusion range cannot be reduced, the dust settling speed cannot be increased, and the like; for example, in the material conveying system disclosed in publication No. CN112919083A, two modes of negative pressure dust collection and dry fog dust suppression are adopted, and although a better dust suppression effect is achieved by limiting respective functional areas, there is still a space for progress, and there is a problem of waste of equipment resources and energy sources, and environmental protection and energy saving cannot be achieved.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a material dust suppression device which has a better dust suppression effect and is energy-saving and environment-friendly.

The technical scheme is as follows: the material dust suppression system comprises a negative pressure dust collection system and a dry fog dust suppression system, wherein the negative pressure dust collection system comprises a dust collection cover suspended above a dust raising point, and a plurality of dust collection pipelines are arranged on the dust collection cover; the dry fog dust suppression system comprises a dry fog pipeline which is positioned below the dust collection cover and used for conveying dry fog mixed liquid, and a plurality of dry fog nozzles are arranged on the dry fog pipeline.

Preferably, the negative pressure dust collecting system comprises a filtering mechanism for filtering dust in the exhaust gas and an exhaust pipeline for exhausting the gas with the dust filtered, and the dry fog dust suppression system comprises an air inlet pipeline for inputting air, and the exhaust pipeline of the negative pressure dust collecting system is communicated with the air inlet pipeline of the dry fog dust suppression system.

The filtering mechanism comprises a bag-type dust collector.

The bag-type dust collector is connected with a dust collecting hopper for storing dust.

The dry fog pipeline is arranged around the dust collection cover.

The dry fog pipeline comprises at least two groups of linear pipelines which are horizontally and correspondingly arranged at two sides of the dust hood.

The length of the linear pipeline is greater than the length of the range corresponding to the length direction of the linear pipeline in the maximum dust raising range.

Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: (1) the dust suppression effect is better: the working ranges of the negative pressure dust collection system and the dry fog dust suppression system are reasonably set and limited, and the dust range is limited in multiple dimensions and multiple directions, so that a better dust suppression effect is achieved. (2) Energy conservation and environmental protection: the exhaust pipe of the negative pressure dust collection system is connected with the air inlet pipe of the dry fog dust suppression system, so that the exhausted waste gas with larger kinetic energy originally is reasonably and effectively utilized, and air inlet and kinetic energy are provided for the dry fog dust suppression system, thereby achieving energy conservation and environmental protection.

Drawings

FIG. 1 is a schematic diagram of the important components of a material dust suppression system;

FIG. 2 is a schematic diagram of specific components of a material dust suppression system.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

The charging car 10 charges at the opening of a discharging pipeline 12 connected with a slag bin 11, a dust collecting and suppressing system is arranged around the discharging pipeline 12 and comprises a dust collecting cover 1 which penetrates through the discharging pipeline 12 and is arranged above a charging point of the charging car 10, the dust collecting cover 1 is square, three groups of dust collecting ports are uniformly arranged on the dust collecting cover 1 and are respectively connected with a dust collecting pipeline 2, the dust collecting pipeline 2 is provided with air inlet power by a centrifugal fan 13 arranged on an exhaust pipeline 6, dust is filtered by a bag-type dust collector 8, and the filtered dust is stored in a dust collecting hopper 9. An exhaust pipeline 6 of the dust collection and suppression system is directly connected with an air inlet pipeline 7 of the dry fog dust suppression system and is transmitted to an air compressor 14, and the air compressor 14 is further provided with an additional air inlet pipeline, so that the flexible adjustment of gas components is facilitated. The compressed air in the air compressor 14 is transferred to an air storage tank 15 and then delivered to a dry fog machine 16. The dry fog machine 16 is also connected with a water inlet pipeline 17, and the water inlet pipeline 17 passes through a water storage tank 18 and a high-pressure pump 19 in sequence to form a high-pressure water body which is transmitted to the dry fog machine 16. The gas and liquid in the dry fog machine 16 are mixed and then conveyed through a dry fog pipeline 3 arranged around the dust hood, and a dry fog spray nozzle 4 is uniformly arranged on the dry fog pipeline 3 to spray dry fog towards the right lower part.

The dry fog pipeline 3 is slightly lower than the dust collecting cover 1 and is arranged in a mode of surrounding the dust collecting cover 1, and can also be correspondingly arranged in a mode of being parallel to the long edge of the dust collecting cover 1 by even number groups of long straight pipes.

After the charging car 10 is charged, dust can be raised, the rising part of the dust is firstly sucked by the dust collection cover 1 of the dust collection and suppression system, the part horizontally overflows the dust collection cover 1, and dry fog generated by the dry fog dust suppression system is mixed and settled, so that the better dust suppression effect is realized by the functional division and combination of the two dust suppression systems.

Claims

1. A material dust suppression system is characterized by comprising a negative pressure dust collection system and a dry fog dust suppression system, wherein the negative pressure dust collection system comprises a dust collection cover (1) suspended above a dust raising point, and a plurality of dust collection pipelines (2) are arranged on the dust collection cover (1); the dry fog dust suppression system comprises a dry fog pipeline (3) which is positioned below the dust collection cover (1) and used for conveying dry fog mixed liquid, and a plurality of dry fog nozzles (4) are arranged on the dry fog pipeline (3).

2. A material dust suppression system according to claim 1, characterized in that the vacuum system comprises a filter means (5) for filtering dust in the exhaust gas and an exhaust duct (6) for exhausting the dust-filtered gas, the dry mist dust suppression system comprises an inlet duct (7) for feeding air, and the exhaust duct (6) of the vacuum system communicates with the inlet duct (7) of the dry mist dust suppression system.

3. A material dust suppression system according to claim 2, characterized in that the filter means (5) comprises a bag dust collector (8).

4. A material dust suppression system according to claim 3, characterized in that a dust collection hopper (9) for storing dust is connected to the bag dust collector (8).

5. A material dust suppression system according to claim 1, characterized in that the dry mist duct (3) is arranged around the dust cage (1).

6. A material dust suppression system according to claim 1, characterized in that the dry mist duct (3) comprises at least two sets of straight ducts, horizontally arranged in correspondence on both sides of the dust cage (1).

7. A material dust suppression system as set forth in claim 4, wherein said linear duct length is greater than the extent of the maximum dust emission range corresponding to the direction of the linear duct length.