• Structure

The wet dust collector adopts a horizontal structure and consists of an air inlet rectifier grid, a spray component, a filter component, and a dehydration component. The spray assembly is connected to the water supply system through flanges or pipes. Connect the sewage pipe under the dewatering device to discharge the sewage to the ditch. The layout of the single-stage structure is shown in Figure 1: According to the needs, the wet dust collector can arrange the second-stage spray component, the second-stage filter component, the second-stage dehydration component, and even the third-stage and fourth-stage... The layout of the multi-level structure is shown in Figure 2: The spray components, filter components and dehydration components at all levels are arranged in a matrix along the section of the square or rectangular shell. The spray component, the filter component and the dehydration component are respectively composed of a plurality of nozzles, a vibrating wire grid filter plate and a "W"-shaped water baffle.

• Working principle

Under the suction of the fan, after the dust-laden gas enters the casing from the dust hood and the dust suction duct, the air flow is evenly distributed on the section of the casing through the rectifying grid, and the droplets sprayed by the nozzle form a vertical direction in the gap of the longitudinal fine string grid, and flow down with the water. When the dust-laden air passes through the water film, it is captured by the water film and flows down with the water flow. The water film is broken under the action of wind flow, and a new water film is formed under the action of continuous spray droplets. Part of the water mist generated by the broken water film of the string grid is dehydrated by the water retaining plate, further separating the dust and discharging the dust to clean the air. In the process of dedusting and purification, the dust-laden air has undergone three-stage dedusting and purification, one is to capture dust by spray droplets, the other is to wash and capture dust by water film, and the third is to remove the dust from the water film on the water-retaining wall and remove the dust in the water mist. The cleaned water flows into the sewage bucket, and is discharged to the circulating water pool or sewage ditch through the continuous water pipe.

• Model presentation method

At present, the wet dust collector developed by the company has four specifications according to the size of the treated air volume, namely KCS-200/D type, KCS-300/D type, KCS-400/D type, KCS-500/D type. The relevant performance parameters of these specifications are shown in the following table:

• Performance parameters of a single-stage structure

	Air Volume(m³/min)	Equipment Resistance(Pa)	Dust Removal Effeciency(%)	Fan Efficiency(Kw)	Water Consumption(m³/h)	Dehydration Efficiency(%)	Supply Pressure(MPa)
KCS-200/D(2)	180-250	≤1200	≥99.9	15	1.5	＞95	≥0.4
KCS-300/D(2)	260-350	≤1200	≥99.9	22	2	＞95	≥0.4
KCS-400/D(2)	350-450	≤1200	≥99.9	30	3	＞95	≥0.4
KCS-500/D(2)	450-550	≤1200	≥99.9	37	4	＞95	≥0.4

• Performance parameters of themulti-stage structure

	Air Volume(m³/min)	Equipment Resistance(Pa)	Dust Removal Effeciency(%)	Fan Efficiency(Kw)	Water Consumption(m³/h)	Dehydration Efficiency(%)	Supply Pressure(MPa)
KCS-200/D(2)	180-250	≤1500	≥99.9	15	3	＞95	≥0.4
KCS-300/D(2)	260-350	≤1500	≥99.9	22	4	＞95	≥0.4
KCS-400/D(2)	350-450	≤1500	≥99.9	30	6	＞95	≥0.4
KCS-500/D(2)	450-550	≤1500	≥99.9	37	8	＞95	≥0.4

Overall arrangement
At present, in the ventilation and dust removal system of mines, the arrangement of wet dust collectors and press-in fans adopts the arrangement of "long pressure and short extraction". The so-called "long pressure" means that the ventilation of the working face is pressed in by positive pressure from the air inlet through the axial flow fan over a long distance. The so-called "short extraction" means that the dust-laden gas on the working face is extracted and purified by means of negative pressure through a dust removal fan installed near the working face at a short distance. As shown in Figure 5: Installation method
There are three ways to install the dust collector: foot installation, hanging installation and bracket installation.
The dust removal device is installed on a fixed concrete foundation or steel structure platform through the support feet. This installation method is recommended for the occasions with large wind conditions. The installation form is shown in Figure 6: Hanging installation is to use one end of the steel rope to wear on the top ring, and the other end to hang on the monorail beam above the roadway, to suspend the entire equipment and move with the pulley on the track. This installation method is suitable for dust removal devices with small air volume. The installation form is shown in Figure 7: The bracket installation is to remove the foot part and directly install it on the overhead steel bracket or the hollow plane of the related equipment. The drainage hopper under the dust collector is below the bracket installation plane. The mounting hole of the bracket and the mounting hole of the foot have the same hole position and hole diameter (refer to the outline dimension table). The installation form is shown in Figure 8：