Wet dust collector with water circulation and water treatment functions

Abstract

The utility model discloses a wet dust collector with water circulation and water treatment, which comprises a dust collector body, the dust collector body comprises an air inlet chamber, a water storage precipitation hopper and an exhaust chamber, the air inlet chamber is provided with a plurality of aeration pipes and a dust collection spray pipe, the water storage precipitation hopper is internally provided with a circulation area and a precipitation area, and the exhaust chamber is provided with a plurality of aeration pipes and a plurality of dust collection spray pipes. The wall surface of the circulating area is provided with a channel communicated with the settling area, the first end of the aeration pipe is communicated with the air inlet chamber, the second end of the aeration pipe extends into the settling area of the water storage settling hopper, the exhaust chamber is connected to the top of the water storage settling hopper, the inlet end of a circulating water pump is connected to the circulating area, and the outlet end of the circulating water pump is connected to the circulating area. The outlet end of the circulating water pump is connected to the dust removal spraying pipe of the air inlet chamber, and a mud valve is arranged at the bottom of the water storage precipitation hopper. The circulating area and the settling area are formed in the water storage settling hopper for primary water treatment, and water in the circulating area is used for circulating spraying dust removal, so that dust removal water is saved, and the load of a water treatment system is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of wet dust collector, belong to dust removal equipment technical field. BACKGROUND

[0002] In the field of industrial dust removal, the mainstream wet dust collector includes spray dust removal, water bath dust removal and comprehensive type and various types. However, all types of wet dust collector have two significant defects: first, the water consumption is huge in the process of wet dust removal operation, which brings heavy pressure to the water supply network of the user;Second, the dust particles are mixed in the water after dust removal, and the dust particles will gradually increase, and the stable operation of the equipment depends on the strong processing capacity of the water treatment system.In the old factory area reconstruction project, the application proportion of wet dust collector is more than half, but the water treatment system capacity of old factory area is usually difficult to meet the demand. SUMMARY

[0003] In view of the above technical defects, the task of the utility model is to provide a wet dust collector with water circulation and water treatment, which solves the problems of large water consumption of wet dust collector and subsequent water treatment difficulty.

[0004] The technical scheme of the utility model is as follows: a wet dust collector with water circulation and water treatment, comprising a dust collector body, the dust collector body comprising an air inlet chamber, a water storage sedimentation hopper and an air outlet chamber, the air inlet chamber is provided with a plurality of aeration pipes and dust removal spray pipes, the water storage sedimentation hopper is provided with a circulating zone and a sedimentation zone, the wall surface of the circulating zone is provided with a channel communicating with the sedimentation zone, the first end of the aeration pipe is in communication with the air inlet chamber, the second end of the aeration pipe extends into the sedimentation zone of the water storage sedimentation hopper, the air outlet chamber is connected to the top of the water storage sedimentation hopper, the inlet end of the circulating water pump is connected to the circulating zone, the outlet end of the circulating water pump is connected to the dust removal spray pipe of the air inlet chamber, and the bottom of the water storage sedimentation hopper is provided with a sludge discharge valve.

[0005] Further, the upper part of the water storage sedimentation hopper is provided with a sedimentation inclined pipe group below the second end of the aeration pipe, and the sedimentation inclined pipe group comprises a plurality of inclined sedimentation inclined pipes.

[0006] Further, the height of the channel is not higher than the upper pipe end of the sedimentation inclined pipe.

[0007] Further, the channel is provided with a filter screen.

[0008] Further, the air inlet chamber and the air outlet chamber are arranged side by side and located above the water storage sedimentation hopper, the aeration pipe is vertically arranged, and the pipe wall of the second end of the aeration pipe is provided with aeration holes.

[0009] Further, the side wall of the air inlet chamber is provided with an air inlet, and the bottom plate of the air inlet chamber is inclined upward to the inside of the air inlet chamber, and the first end of the aeration pipe is connected to the bottom plate of the air inlet chamber.

[0010] Further, the wet dust collector comprises a mud scraper, and the inlet of the mud scraper is connected with the mud discharge valve.

[0011] Further, the lower part of the water storage and precipitation hopper is a downwardly tapered cone, and the side of the cone is provided with a spiral blocking sensor for detecting the amount of mud.

[0012] Further, the exhaust chamber is provided with a demister.

[0013] Further, the exhaust chamber is provided with a cleaning spray pipe, which is located above and below the demister.

[0014] The utility model has the advantages compared with the prior art:

[0015] The utility model sets up circulation area and precipitation area in the water storage and precipitation hopper respectively, and the dust removal water in the precipitation area enters the circulation area through the channel, and then is sprayed again by the circulating water pump, so that the preliminary water treatment and the recycling of the dust removal water are formed in the inside of the dust collector body, the load of the external water treatment system is reduced, the demand of the wet dust removal reconstruction for the expansion of the water treatment system is reduced, and the popularization and application of the wet dust removal are facilitated.

[0016] The utility model utilizes the precipitation inclined pipe group to isolate the fluctuation of the upper water body caused by the flue gas impact, and significantly increases the precipitation area and greatly enhances the precipitation efficiency. The channel between the circulation area and the precipitation area is provided with a filter screen to further isolate the water body fluctuation, and the height of the channel is set to be not higher than the upper pipe end of the precipitation inclined pipe, so that the particulate matter caused by the water body fluctuation is reduced to enter the circulation area, the water quality of the circulation area is improved, the problem of the blockage of the dust removal spray pipe is reduced, and the effect of the spray dust removal is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structure diagram of the wet dust collector with water circulation and water treatment is shown. DETAILED DESCRIPTION

[0018] The utility model will be further described in combination with the embodiments, but is not limited to the utility model.

[0019] Please combine Figure 1 The utility model relates to a kind of wet dust collector with water circulation and water treatment, including dust collector body and closed box chain type mud scraper 1, and dust collector body mainly includes three-part chamber structure, i.e.

[0020] The air inlet chamber 2 is provided with an air inlet 2a for receiving the dust-containing flue gas. In the present embodiment, the air inlet 2a is arranged on one side wall of the air inlet chamber 2. The interior of the air inlet chamber 2 is provided with a dust-removal spray pipe 5 for spraying the spray liquid to adsorb the dust in the flue gas. The air inlet chamber 2 is further provided with a plurality of aeration pipes 6. The first end of the aeration pipe 6 is arranged in the air inlet chamber 2 and communicates with the air inlet chamber 2. The second end of the aeration pipe 6 is located in the water storage and sedimentation tank 3. The pipe wall of the second end of the aeration pipe 6 is provided with dense aeration holes. The dust-containing flue gas after spraying passes through the aeration pipe 6 and enters the water storage and sedimentation tank 3 in the form of small bubbles through the aeration holes. The laterally entering flue gas, the spray liquid and the small aeration bubbles can have more contact with the lower water body to improve the dust removal efficiency. Specifically, the aeration pipe 6 is arranged vertically. The bottom plate 2b of the air inlet chamber 2 is arranged upwardly from the air inlet 2a to the interior of the air inlet chamber 2. The first end of the aeration pipe 6 is connected to the bottom plate 2b of the air inlet chamber 2. In this way, in addition to the dust-containing flue gas which can enter the water storage and sedimentation tank 3 in the form of small bubbles through the aeration pipe 6 from the aeration holes, the spray liquid after adsorbing the dust can also enter the water storage and sedimentation tank 3 after water bath washing through the aeration pipe 6.

[0021] The air inlet chamber 2 is provided with an air inlet 2a for receiving the dust-containing flue gas. In the present embodiment, the air inlet 2a is arranged on one side wall of the air inlet chamber 2. The interior of the air inlet chamber 2 is provided with a dust-removal spray pipe 5 for spraying the spray liquid to adsorb the dust in the flue gas. The air inlet chamber 2 is further provided with a plurality of aeration pipes 6. The first end of the aeration pipe 6 is arranged in the air inlet chamber 2 and communicates with the air inlet chamber 2. The second end of the aeration pipe 6 is located in the water storage and sedimentation tank 3. The pipe wall of the second end of the aeration pipe 6 is provided with dense aeration holes. The dust-containing flue gas after spraying passes through the aeration pipe 6 and enters the water storage and sedimentation tank 3 in the form of small bubbles through the aeration holes. The laterally entering flue gas, the spray liquid and the small aeration bubbles can have more contact with the lower water body to improve the dust removal efficiency. Specifically, the aeration pipe 6 is arranged vertically. The bottom plate 2b of the air inlet chamber 2 is arranged upwardly from the air inlet 2a to the interior of the air inlet chamber 2. The first end of the aeration pipe 6 is connected to the bottom plate 2b of the air inlet chamber 2. In this way, in addition to the dust-containing flue gas which can enter the water storage and sedimentation tank 3 in the form of small bubbles through the aeration pipe 6 from the aeration holes, the spray liquid after adsorbing the dust can also enter the water storage and sedimentation tank 3 after water bath washing through the aeration pipe 6.

[0022] The lower part of the water storage and sedimentation tank 3 is a downwardly tapered cone. The side of the cone is provided with a rotation-resistant sensor 7 for detecting the amount of sludge. When the wet dust collector is in operation, the water storage and sedimentation tank 3 is filled with circulating water, and the water surface is higher than the height of the second end of the aeration pipe 6. The dust-containing flue gas after spraying is further adsorbed by the circulating water by the aeration of the aeration pipe 6, and then enters the exhaust chamber 4. The tapered structure of the lower part of the water storage and sedimentation tank 3 can converge the sludge in the circulating water. Finally, these sludge are concentrated and gathered to the tip of the cone bottom. When the rotation-resistant sensor 7 detects that the rotation torque rises to a certain degree, it is determined that the amount of sludge in the water storage and sedimentation tank 3 is relatively large, and the sludge valve 8 arranged at the bottom of the water storage and sedimentation tank 3 is started to discharge the sludge. In the present embodiment, the sludge valve 8 is also connected to a sealed tank chain type mud scraper 1. When the system needs to discharge the sludge, the sludge valve 8 and the mud scraper 1 are opened synchronously. At this time, the system can successfully fish out the sludge and directly load it into the transfer vehicle. In other embodiments, the outlet of the sealed tank chain type mud scraper 8 can also be configured with a filter press and other equipment for further dewatering treatment.

[0023] In order to save the water for dust removal, a certain space is separated as a circulating area 3a by a partition plate 9 at the upper part of the water storage and precipitation tank 3, and the remaining part is a precipitation area 3b. The partition plate 9 on the wall surface of the circulating area 3a is provided with a channel 9a communicating the circulating area 3a and the precipitation area 3b. The circulating water in the water storage and precipitation tank 3 enters the circulating area 3a and the precipitation area 3b through the channel 9a. The second end of the aeration pipe 6 is immersed in the precipitation area 3b after being immersed in the water storage and precipitation tank 3. A circulating water pump 10 is additionally provided. The inlet end of the circulating water pump 10 is connected to the circulating area 3a through a pipeline, and the outlet end of the circulating water pump 10 is connected to the dust removal spray pipe 5 of the air inlet chamber 2. In this way, the circulating water in the circulating area 3a is extracted by the circulating water pump 10 for spraying, thereby reducing the overall amount of water for dust removal.

[0024] As a preferred embodiment, in this embodiment, a precipitation inclined pipe group 11 is arranged at the upper part of the water storage and precipitation tank 3 below the second end of the aeration pipe 6. The precipitation inclined pipe group 11 includes a plurality of inclined precipitation inclined pipes, preferably densely arranged. These precipitation inclined pipes form a dense precipitation channel, which can block the water disturbance caused by the aeration of the aeration pipe 6, reduce the disturbance of the sediment in the lower part of the water storage and precipitation tank 3, reduce the dust content of the water in the circulating area 3a, and reduce the problem of blockage of the dust removal spray pipe 5. On the other hand, it can increase the contact surface with the dust particles in the water and increase the precipitation area, thereby enhancing the precipitation efficiency. In order to further improve the water quality of the circulating area 3a, the position height of the channel 9a on the partition plate 9 of the circulating area 3a is not higher than the upper pipe end of the precipitation inclined pipe, and a filter screen is arranged on the channel 9a. In this way, the water that has not been stably precipitated by the precipitation inclined pipe will not directly enter the circulating area 3a. In addition, the filter screen can filter large particles and further isolate water fluctuations.

[0025] The flue gas (at this time the dust content in the flue gas is very low) discharged from the circulating water body after aeration enters the exhaust chamber 4. The exhaust chamber 4 is provided with a baffle demister 12, and cleaning spray pipes 13 are arranged above and below the baffle demister 12. The cleaning spray pipes 13 are used for water injection for the baffle demister 12, and are generally connected to a new water pipeline 14. The demister is washed in an intermittent mode, and the water consumption is very small. The washing water also serves as the water supplement of the system. The interval and duration of the washing can be flexibly adjusted to accurately adapt to the water supplement demand of the system. The S-shaped blades of the baffle demister 12 form a curved flue, and the blade surface is attached with a water film. When the flue gas flows through the demister, the dust collides with the wall of the S-shaped blade due to inertia and is absorbed by the water film, thereby achieving dust removal again and further improving the overall dust removal efficiency. Finally, the exhaust gas is discharged from the gas outlet 4a at the top of the exhaust chamber 4.

Claims

1. A wet dust collector with water circulation and water treatment, comprising a dust collector body, characterized in that, The dust remover body comprises an air inlet chamber, a water storage and precipitation hopper and an air outlet chamber, the air inlet chamber is provided with a plurality of aeration pipes and dust removal spray pipes, the water storage and precipitation hopper is internally provided with a circulation zone and a precipitation zone, the wall surface of the circulation zone is provided with a channel communicating with the precipitation zone, the first end of the aeration pipe communicates with the air inlet chamber, the second end of the aeration pipe extends into the precipitation zone of the water storage and precipitation hopper, the air outlet chamber is connected to the top of the water storage and precipitation hopper, the inlet end of a circulating water pump is connected to the circulation zone, the outlet end of the circulating water pump is connected to the dust removal spray pipe of the air inlet chamber, the bottom of the water storage and precipitation hopper is provided with a sludge discharge valve.

2. The wet dust collector with water circulation and water treatment according to claim 1, characterized in that, The upper part of the water storage and precipitation hopper is provided with a precipitation inclined pipe group below the second end of the aeration pipe, the precipitation inclined pipe group comprises a plurality of inclined precipitation inclined pipes.

3. The wet precipitator with water circulation and water treatment according to claim 2, characterized in that, The height of the channel is not higher than the upper pipe end of the precipitation inclined pipe.

4. The wet precipitator with water circulation and water treatment according to claim 3, characterized in that, The channel is provided with a filter screen.

5. The wet precipitator with water circulation and water treatment according to claim 1, characterized in that, The air inlet chamber and the air outlet chamber are arranged side by side and above the water storage and precipitation hopper, the aeration pipe is vertically arranged, and the pipe wall of the second end of the aeration pipe is provided with aeration holes.

6. The wet precipitator with water circulation and water treatment according to claim 5, characterized in that, The side wall of the air inlet chamber is provided with an air inlet, the bottom plate of the air inlet chamber is upwardly arranged from the air inlet to the interior of the air inlet chamber, and the first end of the aeration pipe is connected to the bottom plate of the air inlet chamber.

7. The wet precipitator with water circulation and water treatment according to claim 1, characterized in that, The wet dust remover comprises a sludge scraper, and the inlet of the sludge scraper is connected to the sludge discharge valve.

8. The wet precipitator with water circulation and water treatment according to claim 1, characterized in that, The lower part of the water storage and precipitation hopper is a downwardly tapered cone, and the side of the cone is provided with a spiral blocking sensor for detecting the amount of sludge.

9. The wet precipitator with water circulation and water treatment according to claim 1, characterized in that, The air outlet chamber is provided with a demister.

10. The wet precipitator with water circulation and water treatment according to claim 9, characterized in that, The air outlet chamber is provided with a cleaning spray pipe, and the cleaning spray pipe is located above and below the demister.

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