Dedusting and cleaning device of wet-type electrostatic dust collector

Abstract

The utility model discloses a dust removal cleaning device of a wet type electrostatic dust remover, which relates to the technical field of wet type electrostatic dust removal and comprises a dust removal box, an anode tube group used for adsorbing charged particles in waste gas is vertically arranged in the dust removal box, and a main spraying component used for cleaning the anode tube group is arranged above the anode tube group in the dust removal box. The top of the dedusting box is provided with an exhaust port for exhausting dedusted gas, the side wall of the dedusting box is provided with a gas inlet below the anode tube group, the dedusting box is provided with a pre-spraying assembly between the gas inlet and the anode tube group, the pre-spraying assembly enables particles in waste gas to carry charges more easily, and the dedusting box is internally provided with a discharging assembly which enables air in the dedusting box to be ionized to generate charges. A sewage treatment component is arranged at the bottom of the dedusting box. The containing cavity is formed in the bottom of the dust removal box, the discharging structure is arranged at the bottom of the containing cavity, sewage at the bottom of the dust removal box is discharged in the form of filtered water and sludge, the water resource utilization rate is increased, and the periodic dredging process is omitted.

Description

Technical Field

[0001] The utility model relates to the technical field of wet electrostatic precipitation, in particular to a dust cleaning device for a wet electrostatic precipitator. Background Technique

[0002] A wet electrostatic precipitator is a device used to capture and remove fine particulate matter, aerosols, and certain gaseous pollutants in gases. Different from traditional dry electrostatic precipitators, a wet electrostatic precipitator captures and cleans particulate matter through the use of water or other liquids. After the waste gas enters the wet electrostatic precipitator, it first passes through a water mist system, and the wetted dust particles become more conductive. Under the action of a strong electric field, the dust particles are charged and adsorbed onto the dust collection electrode. The dust particles on the dust collection electrode are washed away through a flushing system, and finally the clean waste gas is discharged. The liquid flushing the dust collection electrode, mixed with the dust adsorbed on the dust collection electrode, converges at the bottom of the wet electrostatic precipitator. Over time, dust is prone to accumulate at the bottom of the wet electrostatic precipitator to form sludge, which requires maintenance personnel to regularly clean the bottom of the wet electrostatic precipitator to prevent the sludge from corroding the wet electrostatic precipitator and affecting the normal operation of the wet electrostatic precipitator.

[0003] Based on this, a dust cleaning device for a wet electrostatic precipitator is now provided, which can eliminate the drawbacks of existing devices. Content of the Utility Model

[0004] The purpose of the utility model is to provide a dust cleaning device for a wet electrostatic precipitator to solve the problems in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dust cleaning device for a wet electrostatic precipitator includes a dust removal box. Inside the dust removal box, a set of anodic tubes for adsorbing charged particulate matter in the waste gas is vertically arranged. Above the set of anodic tubes in the dust removal box, a main spraying assembly for cleaning the anodic tubes is provided. At the top of the dust removal box, an exhaust port for discharging the gas after dust removal is provided. On the side wall of the dust removal box, an air inlet is provided below the set of anodic tubes. Between the air inlet and the set of anodic tubes on the dust removal box, a pre-spraying assembly for making the particulate matter in the waste gas more easily carry charges is provided. Inside the dust removal box, a discharging assembly for ionizing the air inside the dust removal box to generate charges is provided. At the bottom of the dust removal box, a sewage treatment assembly is provided.

[0007] Based on the above technical solutions, the utility model also provides the following optional technical solutions:

[0008] In an optional solution: the main spraying assembly includes a main spraying pipe penetrating through the dust removal box. The main spraying pipe is connected with an upper water inlet outside the dust removal box. On the side of the main spraying pipe close to the set of anodic tubes, a plurality of main spray heads are provided.

[0009] In an alternative solution: The pre-spraying assembly includes a pre-spraying pipe penetrating through the side of the dust removal box between the air inlet and the anode tube group. The pre-spraying pipe is connected to the lower water inlet outside the dust removal box, and the pre-spraying pipe is connected to a pre-spraying head inside the dust removal box.

[0010] In an alternative solution: The discharging assembly includes a plurality of insulating and stabilizing frames arranged on the top of the anode tube group. The lower end of the insulating and stabilizing frame is connected to a barbed wire. The barbed wire is vertically arranged through the anode tube group. The lower end of the barbed wire is electrically connected to a high-voltage wire. The high-voltage wire penetrates through the outer shell of the dust removal box and is electrically connected to an external power supply device.

[0011] In an alternative solution: The sewage treatment assembly includes a cavity arranged at the bottom of the dust removal box. The cavity is funnel-shaped, and a discharging structure is arranged at the bottom of the cavity.

[0012] In an alternative solution: The discharging structure includes a conveying cylinder communicated with the bottom of the cavity. A screw conveyor is rotatably arranged in the conveying cylinder. The right end of the conveying cylinder is connected to a driving motor. The power output end of the driving motor is connected to the screw conveyor. The lower part of the left end of the conveying cylinder is provided with a water outlet, and a filter screen is arranged at the water outlet. The lower part of the right end of the conveying cylinder is provided with a mud outlet.

[0013] In an alternative solution: The exhaust port is arranged in a C shape with the opening facing downwards at the top of the dust removal box.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By arranging a cavity at the bottom of the dust removal box and a discharging structure at the bottom of the cavity, the sewage at the bottom of the dust removal box is discharged in the form of filtered water and sludge respectively, improving the utilization rate of water resources and eliminating the process of regular dredging. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the external structure of the present utility model.

[0017] Figure 2 It is a schematic diagram of the structure of the discharging assembly of the present utility model.

[0018] Figure 3 It is a schematic diagram of the structure of the main spraying assembly of the present utility model.

[0019] Figure 4 It is a schematic sectional view of the discharging structure of the present utility model.

[0020] Figure 5 It is a schematic diagram of the top structure of the anode tube group of the present utility model.

[0021] Annotation of reference numerals: 101, dust removal box; 102, exhaust port; 103, intake port; 104, upper water inlet; 105, lower water inlet; 201, anode tube group; 202, spike wire; 203, high-voltage wire; 204, insulating and stabilizing frame; 205, main spray pipe; 206, main spray head; 207, pre-spray pipe; 208, pre-spray head; 301, cavity; 302, conveying cylinder; 303, auger; 304, driving motor; 305, water outlet; 306, mud outlet. Detailed implementation mode

[0022] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] In one embodiment, as Figures 1 - 5 shown, a wet electrostatic precipitator dust removal and cleaning device includes a dust removal box 101. Inside the dust removal box 101, an anode tube group 201 for adsorbing charged particulate matter in the waste gas is vertically arranged. Above the anode tube group 201 in the dust removal box 101, a main spray assembly for cleaning the anode tube group 201 is arranged. At the top of the dust removal box 101, an exhaust port 102 for discharging the gas after dust removal is arranged. On the side wall of the dust removal box 101, below the anode tube group 201, an intake port 103 is arranged. Between the intake port 103 and the anode tube group 201 on the dust removal box 101, a pre-spray assembly for making the particulate matter in the waste gas more likely to carry charge is arranged. Inside the dust removal box 101, a discharge assembly for ionizing the air inside the dust removal box 101 to generate charge is arranged. At the bottom of the dust removal box 101, a sewage treatment assembly is arranged.

[0024] In this embodiment, the waste gas enters the dust removal box 101 from the intake port 103. The pre-spray assembly makes the waste gas humid. The discharge assembly ionizes the air inside the dust removal box 101 to generate charge, which is carried by the particulate matter in the waste gas. The charged particulate matter is adsorbed on the anode tube group 201 through the anode tube group 201. The main spray assembly sprays the anode tube group 201. The liquid flows down on the anode tube group 201, taking away the waste gas particulate matter adsorbed on the anode tube group 201. The sewage treatment assembly filters the sewage at the bottom of the dust removal box 101, and the filtered water and sludge are discharged respectively. The filtered water can be reused for the spray assembly, improving the utilization rate of water resources.

[0025] In one embodiment, as Figure 2 and Figure 3As shown, the main spray assembly includes a main spray pipe 205 penetrating through the dust removal box 101. The main spray pipe 205 is connected to an upper water inlet 104 outside the dust removal box 101. A plurality of main spray heads 206 are provided on one side of the main spray pipe 205 close to the anode tube group 201. The upper water inlet 104 is communicated with a water supply pipeline. Water is sprayed out from the main spray heads 206 through the main spray pipe 205 to spray and wash the anode tube group 201.

[0026] In one embodiment, as Figure 4 shown, the pre-spray assembly includes a pre-spray pipe 207 penetrating through the side surface of the dust removal box 101 between the air inlet 103 and the anode tube group 201. The pre-spray pipe 207 is connected to a lower water inlet 105 outside the dust removal box 101. The pre-spray pipe 207 is connected to a pre-spray head 208 inside the dust removal box 101. The lower water inlet 105 is communicated with a water supply pipeline. Water is sprayed out from the pre-spray heads 208 through the pre-spray pipe 207 to spray and humidify the waste gas entering the dust removal box 101 from the air inlet 103, making the particulate matter in the waste gas more likely to carry charges.

[0027] In one embodiment, as Figure 2 and Figure 3 shown, the discharge assembly includes a plurality of insulating and stabilizing frames 204 arranged on the top of the anode tube group 201. The lower ends of the insulating and stabilizing frames 204 are connected to spike wires 202. The spike wires 202 are vertically penetrating through the anode tube group 201. The lower ends of the spike wires 202 are electrically connected to high-voltage wires 203. The high-voltage wires 203 penetrate through the outer shell of the dust removal box 101 and are electrically connected to an external power supply device. After high-voltage direct current is introduced into the spike wires 202, the air in the anode tube group 201 is ionized to generate charges. The charges generated by the ionization of the air are adsorbed by the moist particulate matter in the waste gas, making the moist particulate matter in the waste gas charged, and under the action of the electric field force, the particulate matter is adsorbed on the anode tube group 201.

[0028] In one embodiment, as Figure 4 shown, the sewage treatment assembly includes a cavity 301 arranged at the bottom of the dust removal box 101. The cavity 301 is funnel-shaped, and a discharge structure is provided at the bottom of the cavity 301. The cavity 301 plays a role in collecting sewage.

[0029] In one embodiment, as Figure 4As shown in the figure, the discharge structure includes a conveying cylinder 302 communicating with the bottom of the cavity 301. A screw conveyor 303 is rotatably arranged in the conveying cylinder 302. The right end of the conveying cylinder 302 is connected with a driving motor 304. The power output end of the driving motor 304 is connected with the screw conveyor 303. The lower part of the left end of the conveying cylinder 302 is provided with a water outlet 305. A filter screen is arranged at the water outlet 305. The lower part of the right end of the conveying cylinder 302 is provided with a mud outlet 306. The sewage in the cavity 301 is filtered and discharged through the filter screen at the water outlet 305 and then conveyed to the spraying assembly for recycling. The particulate matter in the sewage accumulates at the filter screen. The driving motor 304 rotates slowly, driving the screw conveyor 303 to rotate in the conveying cylinder 302, slowly lifting the silt accumulated at the filter screen in the conveying cylinder 302, and discharging it through the mud outlet 306. When the screw conveyor 303 lifts the silt, it will also lift the sewage. The sewage leaks back to the bottom of the conveying cylinder 302 through the gap between the screw conveyor 303 and the conveying cylinder 302 during the slow lifting process, realizing continuous cleaning of the silt at the bottom of the dust removal box 101, improving the water resource utilization rate, and enabling the equipment to maintain normal dust removal operation.

[0030] In one embodiment, as Figure 1 shown, the exhaust port 102 is arranged in a C shape with the opening facing downwards at the top of the dust removal box 101, reducing the probability of foreign objects entering the dust removal box 101 from the exhaust port 102 and improving the operation stability of the equipment.

[0031] The above embodiment discloses a dust removal and cleaning device for a wet electrostatic precipitator. The waste gas enters the dust removal box 101 from the air inlet 103. The lower water inlet 105 is communicated with the water supply pipeline. Water is sprayed from the pre-spray head 208 through the pre-spray pipe 207 to spray and humidify the waste gas entering the dust removal box 101 from the air inlet 103, making the particulate matter in the waste gas more likely to carry charges. After applying high-voltage direct current to the barbed wire 202, the air in the anodic tube group 201 is ionized to generate charges. The charges generated by the air ionization are adsorbed by the wet particulate matter in the waste gas, making the wet particulate matter in the waste gas charged, and under the action of the electric field force, the particulate matter is adsorbed on the anodic tube group 201. The upper water inlet 104 is communicated with the water supply pipeline. Water is sprayed from the main spray head 206 through the main spray pipe 205 to spray and wash the anodic tube group 201. The liquid sprayed by the main spray head 206 flows downwards on the anodic tube group 201 to carry away the particulate matter adsorbed on the anodic tube group 201. The sewage formed after washing the anodic tube group 201 converges in the cavity 301. The sewage in the cavity 301 is filtered and discharged through the filter screen at the water outlet 305 and then transported to the spray assembly for recycling. The particulate matter in the sewage accumulates at the filter screen. The drive motor 304 rotates slowly, driving the auger 303 to rotate in the conveying cylinder 302, slowly lifting the sludge accumulated at the filter screen in the conveying cylinder 302, and discharging it through the mud outlet 306. When the auger 303 lifts the sludge, it will also lift the sewage. The sewage leaks back to the bottom of the conveying cylinder 302 through the gap between the auger 303 and the conveying cylinder 302 during the slow lifting process, realizing continuous cleaning of the sludge at the bottom of the dust removal box 101, improving the utilization rate of water resources, and keeping the equipment performing normal dust removal operations.

[0032] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A wet electrostatic precipitator dust cleaning device, comprising a dust removal box (101); It is characterized in that Inside the dust removal box (101), a group of anode tubes (201) for adsorbing charged particulate matter in the waste gas is vertically arranged. Above the group of anode tubes (201) in the dust removal box (101), a main spray assembly for cleaning the group of anode tubes (201) is provided. At the top of the dust removal box (101), an exhaust port (102) for discharging the gas after dust removal is provided. On the side wall of the dust removal box (101), an air inlet (103) is provided below the group of anode tubes (201). Between the air inlet (103) and the group of anode tubes (201) on the dust removal box (101), a pre-spray assembly for making the particulate matter in the waste gas more easily carry charges is provided. Inside the dust removal box (101), a discharge assembly for ionizing the air inside the dust removal box (101) to generate charges is provided. At the bottom of the dust removal box (101), a sewage treatment assembly is provided.

2. The dust removal and cleaning device of a wet electrostatic precipitator according to claim 1, wherein The main spray assembly includes a main spray pipe (205) penetrating through the dust removal box (101). The main spray pipe (205) is connected to an upper water inlet (104) outside the dust removal box (101). On the side of the main spray pipe (205) close to the group of anode tubes (201), a plurality of main spray heads (206) are provided.

3. The dust removal and cleaning device of a wet electrostatic precipitator according to claim 1, wherein, The pre-spray assembly includes a pre-spray pipe (207) penetrating through the side surface of the dust removal box (101) between the air inlet (103) and the group of anode tubes (201). The pre-spray pipe (207) is connected to a lower water inlet (105) outside the dust removal box (101). On the inner side of the dust removal box (101), the pre-spray pipe (207) is connected to a pre-spray head (208).

4. The dust removal and cleaning device of a wet electrostatic precipitator according to claim 1, characterized in that, The discharge assembly includes a plurality of insulating and stabilizing frames (204) arranged at the top of the group of anode tubes (201). The lower end of the insulating and stabilizing frame (204) is connected to a spike wire (202). The spike wire (202) vertically penetrates through the group of anode tubes (201). The lower end of the spike wire (202) is electrically connected to a high-voltage wire (203). The high-voltage wire (203) penetrates through the outer shell of the dust removal box (101) and is electrically connected to an external power supply device.

5. The dust removal and cleaning device of a wet electrostatic precipitator according to claim 1, characterized in that, The sewage treatment assembly includes a cavity (301) arranged at the bottom of the dust removal box (101). The cavity (301) is funnel-shaped, and a discharge structure is provided at the bottom of the cavity (301).

6. The dust removal and cleaning device of a wet electrostatic precipitator according to claim 5, characterized in that, The discharge structure includes a conveying cylinder (302) communicated with the bottom of the cavity (301). Inside the conveying cylinder (302), a screw conveyor (303) is rotatably arranged. The right end of the conveying cylinder (302) is connected to a driving motor (304). The power output end of the driving motor (304) is connected to the screw conveyor (303). At the lower left end of the conveying cylinder (302), a water outlet (305) is provided. A filter screen is provided at the water outlet (305). At the lower right end of the conveying cylinder (302), a mud outlet (306) is provided.

7. The dust removal and cleaning device of a wet electrostatic precipitator according to claim 1, characterized in that, The exhaust port (102) is arranged in a C shape with the opening facing downwards at the top of the dust removal box (101).

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