CN204601900U - A kind of Wet-type spray wet dust collector - Google Patents

Abstract

The utility model relates to a wet spray water bath deduster. Its technical scheme is: the end of air intake box (2) is closed and fixedly connected with exhaust box (10) side wall, is provided with ash hopper (14) just below the air intake box (2), and ash hopper (14) The upper end is fixedly connected with the corresponding side plates of the air intake box (2) and the exhaust box (10) through the four side plates of the lower box body (13). The end of the intake box (2), the upper end of the exhaust box (10) and the lower frame of the intake cover (1) cover mouth are located on the same horizontal line. 3~50 rows of spray water pipes (3) are evenly arranged in the box body of the air intake box (2), and each row of spray water pipes (3) is equipped with 2~10 spray nozzles (4). The water pipe (3) is located below said horizontal line. The dividing plate (5) between the air intake box (2) casing and the lower casing (13) has circular holes evenly, and the orifice of each circular hole is vertically equipped with a gas washing pipe (6). The lower part of the left side plate of the casing (13) is provided with a water level observation window (17). The device has the characteristics of water saving, small size, simple structure and high dust removal efficiency.

Description

A wet spray water bath dust collector

technical field

The utility model belongs to the technical field of spray water bath dust collectors. In particular, it relates to a wet spray water bath deduster.

Background technique

A large amount of dust will be generated in the filling process of gobside entry retention in underground coal mines, causing the dust concentration in the production environment to seriously exceed the standard, threatening production safety and workers' health. Due to the narrow space and special conditions in underground mines, some of them also have the risk of explosion. Electrostatic precipitators and bag filters cannot be used in underground mines. There is a problem of excessive dust concentration in the coal mine underground filling process.

How to solve the problem of excessive dust concentration in coal mine underground filling process, domestic and foreign scientific research workers and engineering technicians have carried out a lot of theoretical and practical research, and adopted various methods including spray dust removal for working places with concentrated personnel and high dust concentration However, due to the particularity of underground working conditions, these wet-type dust-removal devices have not overcome the problems of large volume, complex structure and low dust-removal efficiency at the same time, and the effect is not ideal.

Contents of the invention

The utility model aims to overcome the defects of the prior art, and aims to provide a wet spray water bath dust collector with water saving, small volume, simple structure and good dust removal effect.

In order to achieve the above purpose, the technical solution adopted by the utility model is: the wet spray water bath dust collector includes an air intake hood, an air intake box, an exhaust box, an exhaust hood, a lower box, a gas washing pipe and an ash hopper.

The intake end of the air intake box is fixedly connected with the air intake hood, the end of the air intake box is closed and fixedly connected with the side wall of the exhaust box, and the upper end of the exhaust box is fixedly connected with the mouth of the exhaust hood. An ash hopper is arranged directly below, and the upper end of the ash hopper is fixedly connected with the corresponding side plates of the air intake box and the exhaust box through the four side plates of the lower box body.

The mouth of the air intake hood is square, and the top plate of the air intake hood is set horizontally; the top plate of the air intake box is a sloping plate with the intake end higher than the end, and the end of the air intake box, the upper end of the exhaust box and the mouth of the air intake hood The lower frame of the air intake box is located on the same horizontal line; 3~50 rows of spray water pipes are evenly arranged in the box of the air intake box, and each row of spray water pipes is equipped with 2~10 spray nozzles, and each row of spray water pipes is located at the below the horizontal line.

The bottom plate of the air intake box is set horizontally. The bottom plate is the partition between the air intake box body and the lower box body. The partition is evenly opened with circular holes. The ratio is 0.3︰1~0.5︰1; a gas washing pipe is installed vertically at the opening of each circular hole, and the air intake box and the lower box are connected through the gas washing pipe.

The lower part of the left side plate of the lower box is equipped with a water level observation window. The vertical distance between the center of the water level observation window and the lower port of the air washing pipe is 50~80mm, and the lower port of the air washing pipe is lower than the center of the water level observation window.

The exhaust box is surrounded by four side panels. The upper port of the exhaust box is evenly equipped with 1~5 rows of washing water pipes, and each row of washing water pipes is equipped with 2~10 washing nozzles; the lower port of the exhaust box is equipped with There is an air distribution plate, and a demister is arranged between the washing nozzle and the air distribution plate.

The air flow uniform distribution plate is composed of a frame and an inverted "V" shaped strip plate, and the inverted "V" shaped strip plate is evenly fixed on the inner wall of the frame, and the width of the inverted "V" shaped strip plate is 20-80mm. The distance between the center lines of the inverted "V"-shaped strips is 1.5 to 2.5 times the width of the inverted "V"-shaped strips.

The gas washing pipe is a conical pipe, the length of the conical pipe is 65-80% of the height of the lower box, and the ratio of the inner diameter of the upper port of the conical pipe to the inner diameter of the lower port is 1:0.3~1:0.6; the conical pipe The inner diameter of the upper port is 50~100mm, and the inner diameter of the upper port of the conical tube is equal to the inner diameter of the circular hole of the partition.

The ash hopper is composed of 1 to 4 sub-ash hoppers, which are arranged in a "one" shape. The bottom of each sub-ash hopper is provided with a sewage outlet, and each sewage outlet is equipped with a valve.

Owing to adopting above-mentioned technical scheme, the utility model has following positive effect:

1) The utility model is mainly composed of an air intake box, an exhaust box, a lower box body, an air washing pipe and an ash hopper. The whole device has a simple and compact structure and a small volume, and can meet the needs of the gobside entry filling process in underground coal mines.

2) There is a sewage outlet directly below the lower box of the utility model, and the amount of sewage discharged by the sewage outlet per unit time is the same as the total water volume sprayed by all spray nozzles and washing nozzles per unit time, and the water level of the lower box The observation window is marked with a water level line. When the water level in the lower tank is equal to the water level line of the water level observation window, adjust the valve at the sewage outlet, and the sewage flowing out of the sewage outlet will enter the filling pump through the pump to realize water reuse and save energy. Use water to avoid the waste of water resources.

3) When the dust-laden gas enters the air intake box from the air intake hood, the dust-laden gas is evenly distributed in the air intake box under the action of the inclined plate on the top of the air intake box, and the dust-laden gas and the water mist sprayed from the spray nozzle Mixing, part of the dust in the dusty gas is wetted and captured by the liquid droplets, and falls on the partition together with the liquid droplets, and flows into the lower box through the gas washing pipe. Since the lower port of the gas washing pipe is located 50-80mm below the horizontal surface of the lower box, as the dusty gas continues to flow in, the pressure in the air intake box gradually increases, and there is no liquid trapped in the air intake box. The dusty gas enters the scrubbing pipe under the action of pressure; in addition, because the installation position of the spray water pipe and the spray nozzle is lower than the mouth of the intake hood, even if the speed of the dusty gas entering from the mouth of the intake hood is high, it will not Blow away the droplets sprayed by the spray nozzle, ensuring the uniform distribution of the droplets and the efficiency of spray dust removal.

4) Since the pipe diameter of the air washing pipe in the utility model decreases gradually from top to bottom, the droplets sprayed from the spray nozzle can form a water film on the pipe wall of the air washing pipe. For the dust-laden gas entering the gas scrubbing pipe, part of the dust is directly captured by the droplets sprayed by the spray nozzle in the middle of the gas scrubbing pipe, and the other part of the dust adheres to the water film on the wall of the gas scrubbing pipe and is trapped. Collect, so that it flows into the lower box with the water flow, and some dust enters the water in the lower box through the washing pipe to be washed, so the dust removal efficiency is increased and the dust removal efficiency is high.

5) When the dust-laden gas entering the lower box is washed and escapes the water surface of the lower box, the dust in the dust-laden gas is almost captured at this time; because the dust-laden gas is at the outlet of the gas washing pipe at a higher velocity , will arouse water droplets on the water surface of the lower box. At this time, even if the dust-laden gas still contains dust, it can still be further mixed with the water droplets aroused on the water surface and be further captured. Then, when the gas containing water droplets passes through the air flow uniform distribution plate in the exhaust box, it is evenly distributed, and then enters the demister for gas-water separation, thereby reducing the content of water droplets in the exhaust gas.

6) Every time the utility model works for a period of time, the demister can be washed with the washing nozzle in the exhaust box according to the actual situation, so as to ensure the continuous and efficient dust removal process.

Therefore, the device has the characteristics of water saving, small size, simple structure and high dust removal efficiency, and can meet the needs of use in the filling process of gobside entry retention in underground coal mines.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is the A-A direction sectional schematic diagram of Fig. 1;

FIG. 3 is a schematic top view of the air distribution plate 12 in FIG. 1 .

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific examples of implementation, which is not intended to limit its protection scope.

Example 1

A wet spray water bath dust collector. As shown in FIG. 1 , the wet spray water bath dust collector includes an air intake hood 1 , an air intake box 2 , an exhaust box 10 , an exhaust hood 7 , a lower box body 13 , a gas washing pipe 6 and an ash hopper 14 .

The intake end of the air intake box 2 is fixedly connected with the air intake cover 1, the end of the air intake box 2 is closed and fixedly connected with the side wall of the exhaust box 10, and the upper end of the exhaust box 10 is fixedly connected with the mouth of the exhaust cover 7 , directly below the air intake box 2 is provided with an ash hopper 14, and the upper end of the ash hopper 14 is fixedly connected with the corresponding side plates of the air intake box 2 and the exhaust box 10 through four side plates of the lower box body 13.

The mouth of the air intake hood 1 is a square, and the top plate of the air intake hood 1 is set horizontally; The lower frame of the mouth of the air intake cover 1 is located on the same horizontal line; the box body of the air intake box 2 is evenly provided with 4 rows of spray water pipes 3, and each row of spray water pipes 3 is equipped with 2 spray nozzles 4, and each row The shower pipe 3 is located below the horizontal line.

The bottom plate of the air intake box 2 is arranged horizontally, and the bottom plate is a partition 5 between the air intake box 2 box body and the lower box body 13 . As shown in Figure 2, the partition 5 is evenly opened with circular holes, and the ratio of the sum of the orifice areas of the circular holes to the area of the partition 5 is 0.3:1~0.4:1; the orifice of each circular hole Gas washing pipe 6 is vertically installed at the place, and the air intake box 2 and the lower box body 13 are communicated through the washing pipe 6 .

As shown in Figure 1, the lower part of the left side plate of the lower box body 13 is provided with a water level observation window 17, and the vertical distance between the center of the water level observation window 17 and the lower port of the air washing pipe 6 is 50-70mm, and the lower port of the air washing pipe 6 is lower than The center of water level observation window 17.

As shown in Figures 1 and 2, the exhaust box 10 is surrounded by four side plates, and the upper port of the exhaust box 10 is evenly provided with two rows of washing water pipes 8, and each row of washing water pipes 8 is equipped with two washing nozzles 9. The lower port of the exhaust box 10 is provided with an air flow uniform distribution plate 12, and a demister 11 is provided between the washing nozzle 9 and the air flow uniform distribution plate 12.

As shown in Figure 3, the airflow uniform distribution plate 12 is composed of a frame 18 and an inverted "V" shaped strip 19, the inverted "V" shaped strip 19 is evenly fixed on the inner wall of the frame 18, and the inverted "V" The width of the zigzag strips 19 is 20-50 mm, and the distance between the centerlines of the inverted "V"-shaped strips 19 is 1.5-2.0 times the width of the inverted "V"-shaped strips 19.

As shown in Figure 1, the gas washing pipe 6 is a conical pipe, the length of the conical pipe is 65-75% of the height of the lower box body 13, and the ratio of the inner diameter of the upper port of the conical pipe to the inner diameter of the lower port is 1:0.3 ~1︰0.5; the inner diameter of the upper port of the conical tube is 50-80mm, and the inner diameter of the upper port of the conical tube is equal to the inner diameter of the circular hole of the partition 5.

As shown in Figure 1, the ash hopper 14 is composed of two sub-ash hoppers, which are arranged in the shape of a "one", and the bottom of each sub-ash hopper 14 is provided with a sewage outlet 16, and each sewage outlet 16 is equipped with a valve 15.

Example 2

A wet spray water bath dust collector. Except following technical parameter, all the other are with embodiment 1:

3 rows or 5-50 rows of spray water pipes 3 are evenly arranged in the box body of the air intake box 2, and each row of spray water pipes 3 is equipped with 3-10 spray nozzles 4;

The ratio of the sum of the orifice areas of the circular holes to the area of the partition 5 is 0.4:1~0.5:1;

The vertical distance between the center of the water level observation window 17 and the lower port of the air washing pipe 6 is 60-80mm;

One row or 3~5 rows of washing water pipes 8 are evenly arranged at the upper port of the exhaust box 10, and each row of washing water pipes 8 is equipped with 3~10 washing nozzles 9;

The width of the inverted "V"-shaped strip 19 is 50-80mm, and the distance between the centerlines of the inverted "V"-shaped strip 19 is 2.0-2.5 times the width of the inverted "V"-shaped strip 19;

The length of the conical tube is 70-80% of the height of the lower box 13, the ratio of the inner diameter of the upper port of the conical tube to the inner diameter of the lower port is 1:0.4~1:0.6; the inner diameter of the upper port of the conical tube is 70-100mm ;

Described ash hopper 14 is made up of 1 or 3～4 sub-ash hoppers.

Owing to adopting above-mentioned technical scheme, this specific embodiment has following positive effect:

1) This specific embodiment is mainly composed of air intake box 2, exhaust box 10, lower box body 13, gas washing pipe 6 and ash hopper 14. The whole device has a simple and compact structure and small volume, which can meet the requirements of retaining roadways in underground coal mines. Filling process needs.

2) A sewage outlet 16 is provided directly below the lower box body 13 of this specific embodiment, and the amount of sewage discharged by the sewage outlet 16 per unit time is the same as the total amount of water sprayed by all the spray nozzles 4 and washing nozzles 9 per unit time , the water level observation window 17 of the lower box body 13 is marked with a water level line, when the water level in the lower box body 13 is flush with the water level line of the water level observation window 17, adjust the valve 15 at the sewage outlet 16, and the sewage flowing out from the sewage outlet 16 The pump enters the filling pump to realize the reuse of water, save water and avoid the waste of water resources.

3) When the dusty gas enters the intake box 2 from the intake hood 1, the dusty gas is evenly distributed in the intake box 2 under the action of the inclined plate on the top of the intake box 2, and the dusty gas and the spray nozzle 4 The sprayed water mist is mixed, and part of the dust in the dust-laden gas is wetted and captured by the liquid droplets, and falls on the partition 5 together with the liquid droplets, and flows into the lower box 13 through the gas washing pipe 6 . Since the lower port of the gas washing pipe 6 is located at 50-80 mm below the horizontal surface of the lower box body 13, as the dusty gas continues to pass in, the pressure in the air intake box 2 gradually increases, and there is no liquid in the air intake box 2. The dust-containing gas collected by the droplets enters the gas washing pipe 6 under the action of pressure; in addition, because the installation position of the spray water pipe 3 and the spray nozzle 4 is lower than the mouth of the air intake hood 1, even if the air enters from the mouth of the air intake hood 1 The dust-laden gas has a high velocity and will not blow away the liquid droplets ejected from the spray nozzle 4, which ensures the uniform distribution of the liquid droplets and the efficiency of spraying and dust removal.

4) Since the diameter of the scrubbing pipe 6 in this embodiment gradually decreases from top to bottom, the droplets sprayed from the spray nozzle 4 can form a water film on the wall of the scrubbing pipe 6 . For the dust-laden gas entering the gas scrubbing pipe 6, part of the dust is directly captured by the droplets sprayed by the spray nozzle 4 at the middle position of the gas scrubbing pipe 6, and the other part of the dust adheres to the water on the wall of the gas scrubbing pipe 6. The film is trapped on the film, thereby flowing into the lower box 13 with the water flow, and a part of the dust enters the water in the lower box 13 through the washing pipe 6 to be washed, so the dust removal efficiency is increased and the dust removal efficiency is high.

5) When the dusty gas entering the lower box 13 is washed and escapes from the water surface of the lower box 13, the dust in the dusty gas is almost captured; The higher the speed, the water droplets will be aroused on the water surface of the lower box body 13. At this time, even if the dust-laden gas also contains dust, it can still be further mixed with the water droplets aroused on the water surface and further trapped. Then, when the gas containing water droplets passes through the air flow uniform distribution plate 12 in the exhaust box 10, it is evenly distributed, and then enters the demister 11 for gas-water separation, thereby reducing the content of water droplets in the exhaust gas.

6) According to the actual situation, the cleaning nozzle 9 in the exhaust box 10 can be used to wash the demister 11 every time the specific embodiment works for a period of time, so as to ensure the continuous and efficient dust removal process.

Therefore, the device has the characteristics of water saving, small size, simple structure and high dust removal efficiency, and can meet the needs of use in the filling process of gobside entry retention in underground coal mines.

Claims (4)

1. A wet spray water bath deduster is characterized in that said wet spray water bath deduster comprises an air intake cover (1), an air intake box (2), an exhaust box (10), an exhaust cover (7) , lower casing (13), scrubbing pipe (6) and ash hopper (14); The intake end of the air intake box (2) is fixedly connected with the air intake cover (1), the end of the air intake box (2) is closed and fixedly connected with the side wall of the exhaust box (10), and the upper end of the exhaust box (10) It is fixedly communicated with the mouth of the exhaust hood (7), and an ash hopper (14) is arranged directly below the air intake box (2), and the upper end of the ash hopper (14) passes through the four holes of the lower box (13). The side panels are fixedly connected to the corresponding side panels of the air intake box (2) and the exhaust box (10); The mouth of the air intake hood (1) is a square, and the top plate of the air intake hood (1) is arranged horizontally; the top plate of the air intake box (2) is a slant plate whose air intake end is higher than the end, and the end of the air intake box (2) 1. The upper end of the exhaust box (10) and the lower frame of the intake cover (1) are located on the same horizontal line; 3 to 50 rows of spray pipes (3) are evenly arranged in the box of the intake box (2). , each row of spray water pipes (3) is equipped with 2 to 10 spray nozzles (4), and each row of spray water pipes (3) is located below the horizontal line; The bottom plate of the air intake box (2) is arranged horizontally, and the bottom plate is a partition (5) between the box body of the air intake box (2) and the lower box body (13), and the partition plate (5) is evenly opened with circular holes , the ratio of the sum of the orifice areas of the circular holes to the area of the partition (5) is 0.3︰1~0.5︰1; the orifice of each circular hole is vertically equipped with a gas washing pipe (6), and the air intake box (2) communicate with the lower casing (13) by the scrubbing pipe (6); The lower part of the left side plate of the lower box (13) is provided with a water level observation window (17), and the vertical distance between the center of the water level observation window (17) and the lower port of the gas washing pipe (6) is 50 ~ 80mm, and the distance between the center of the water level observation window (17) and the lower port of the gas washing pipe (6) The lower port is lower than the center of the water level observation window (17); The exhaust box (10) is surrounded by four side plates, and the upper port of the exhaust box (10) is evenly provided with 1~5 rows of washing water pipes (8), and each row of washing water pipes (8) is equipped with 2~10 a washing nozzle (9); the lower port of the exhaust box (10) is provided with an air distribution plate (12), and a demister (11) is provided between the washing nozzle (9) and the air distribution board (12) . 2. The wet spray water bath dust collector according to claim 1, characterized in that the air flow uniform distribution plate (12) is composed of a frame (18) and an inverted "V" shaped strip plate (19), and the inverted "V" ""-shaped strips (19) are evenly fixed on the inner wall of the frame (18), the width of the inverted "V"-shaped strips (19) is 20-80mm, and the centerline of the inverted "V"-shaped strips (19) The distance between them is 1.5～2.5 times of the width of the inverted "V" shaped strip plate (19). 3. The wet spray water bath deduster as claimed in claim 1, characterized in that the gas washing pipe (6) is a conical pipe, and the length of the conical pipe is 65 to 80% of the height of the lower casing (13), The ratio of the inner diameter of the upper port of the conical tube to the inner diameter of the lower port is 1︰0.3~1︰0.6; The bore diameters are equal. 4. The wet spray water bath deduster as claimed in claim 1, characterized in that said ash hopper (14) is made up of 1 to 4 sub-ash hoppers, and the sub-ash hoppers are arranged in the shape of "one", each sub-ash hopper ( 14) Bottoms are all provided with drain outlets (16), and each drain outlet (16) is equipped with a valve (15).