Wet drawer type boiler electrostatic dust collection purifier

Abstract

The utility model discloses a wet drawer type boiler electrostatic dust collection purifier which comprises a base and a dust collection purification box body arranged on the base, a waste gas collection opening is formed in the side wall close to the bottom of the dust collection purification box body, and an exhaust opening is formed in the side wall of the top end of the dust collection purification box body. A first drawer opening, a second drawer opening and a third drawer opening are formed in the outer wall of the front face of the dust removal and purification box body from bottom to top, a first filtering drawer is horizontally inserted into the first drawer opening, and an electrostatic capturing drawer is horizontally inserted into the second drawer opening; a second filtering drawer is horizontally inserted into the third drawer opening, and a spraying device is arranged in the dedusting and purifying box body below the first filtering drawer. According to the utility model, the flue gas and dust discharged by combustion of the boiler can be quickly washed, filtered, cooled, settled and purified by electrostatic dust collection, and the cleaning maintenance or the insertion installation is simple.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of boiler smoke and waste gas purification, especially relates to a wet drawer type boiler electrostatic dust removal purifier. BACKGROUND

[0002] The dust generated in industrial production and the flue gas and dust pollutants discharged by the boiler combustion are one of the main reasons causing air pollution, and the dust removal purifier is a commonly used pollutant purification equipment in the boiler and industrial production. The dust removal purifier mainly has dry electrostatic precipitator, wet electrostatic precipitator, filter type dust collector and acoustic wave dust collector and various dust removal equipment. At present, the dry electrostatic precipitator and the wet electrostatic precipitator are mostly used for purifying the flue gas generated by the boiler, and the dust removal principles of the wet electrostatic precipitator and the dry electrostatic precipitator are basically the same, that is, the gas around the discharge electrode is ionized under the high voltage between the discharge electrode and the dust collection electrode of the electric field, so that the surface of the dust, liquid drop and the like is charged and moves along the directional dust collection electrode. The difference lies in that the wet electrostatic precipitator adopts interval or continuous spraying liquid drop to flush the surface of the dust collection electrode to realize ash removal, so as to achieve the purpose of comprehensively collecting the composite pollutants. The dust removal purifier has the advantages of simple structure, low cost and convenient use. However, in the operation process of the electric field for treating the smoke dust, a large amount of dust or oil gas pollutants will be deposited in the space of the electric field. If the space of the electric field is not cleaned, the purification treatment effect and the service life of the dust removal purifier will be affected. In addition, it is difficult to clean the dust in the space of the electric field, the filter screen is difficult to replace, it is not convenient to clean, and the waste gas treatment effect is poor after being used again after cleaning. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a wet drawer type boiler electrostatic dust removal purifier, the electrostatic dust removal purifier can quickly wash, filter, cool, reduce dust and electrostatic dust removal purify the flue gas and dust discharged by the boiler combustion, and each filter drawer can be quickly pulled out from the dust removal purifier box for cleaning and maintenance or inserted and installed, so that the electrostatic dust removal purifier is simple to maintain.

[0004] According to one aspect of the utility model, a wet drawer type boiler electrostatic dust removal purifier is provided, the electrostatic dust removal purifier includes a base and a dust removal purifier box arranged on the base, a waste gas collecting port is arranged on the side wall close to the bottom of the dust removal purifier box, an exhaust port is arranged on the top end side wall of the dust removal purifier box, a first drawer port, a second drawer port and a third drawer port are arranged on the front outer wall of the dust removal purifier box from bottom to top, a first filter drawer is horizontally inserted and connected on the first drawer port, an electrostatic capture drawer is horizontally inserted and connected on the second drawer port, and a second filter drawer is horizontally inserted and connected on the third drawer port. A spraying device is arranged in the dust removal purifier box below the first filter drawer.

[0005] Preferably, the electrostatic capture drawer comprises an electrostatic drawer shell slidably inserted into the second drawer opening, the lower end of the electrostatic drawer shell is open, a plurality of electrostatic capture net cylinders are vertically arranged in an array in the electrostatic drawer shell, a discharge electrode is vertically arranged in the center of each electrostatic capture net cylinder, the discharge electrode is arranged on the upper side of the electrostatic drawer shell through a discharge support frame, and a handle is arranged on the front outer wall of the electrostatic drawer shell.

[0006] Preferably, an upper insertion port is arranged at each of the four corner positions of the opening of the electrostatic drawer shell, an insulating column is respectively inserted into each of the upper insertion ports, the four corner positions of the discharge support frame are respectively fixed on the insulating columns, and a rear filter screen fixed on the insulating columns is arranged above the discharge support frame.

[0007] Preferably, an insulating shell is arranged on the outer wall of the discharge electrode between the discharge support frame and the upper end of the electrostatic capture net cylinder.

[0008] Preferably, a front filter screen is arranged below the lower opening of the electrostatic drawer shell, a lower insertion port is arranged at each of the four corner positions of the lower opening of the electrostatic drawer shell, a fixed support column is fixed in the lower insertion port, and the front filter screen is respectively supported and fixed on the electrostatic drawer shell through the fixed support column.

[0009] Preferably, a baffle is arranged obliquely above the first filter drawer and below the electrostatic dust removal device.

[0010] Preferably, an exhaust pipe is connected to the exhaust port, and a negative pressure induced draft fan is arranged on the exhaust pipe.

[0011] Preferably, a sewage discharge port is arranged on the bottom side wall of the dust removal and purification box body, an overflow groove is arranged on the inner side wall of the dust removal and purification box body on the side above the sewage discharge port, and a drainage port is arranged on the bottom of the overflow groove.

[0012] Preferably, an overflow sealing shell is arranged on the outer side wall of the dust removal and purification box body and outside the drainage port, and an overflow port is arranged on the top side wall of the overflow sealing shell.

[0013] Preferably, the first filter drawer comprises a first drawer shell, a silk screen filter layer, and a first handle arranged on the front outer wall of the first drawer shell, the upper and lower ends of the first drawer shell are open, and the silk screen filter layer is fixedly arranged in the first drawer shell.

[0014] As described above, the electrostatic dust removal device has the following technical effects:

[0015] (1) The wet drawer-type electrostatic precipitator for boilers of this utility model can wash, filter, cool and reduce the flue gas and dust emitted from boiler combustion. Excess exhaust gas and dust particles are filtered and intercepted again, and then enter the high-voltage electric field area for high-voltage electrostatic capture of exhaust gas and dust particles. After purification, the exhaust gas and dust particles are adsorbed and filtered and discharged from the exhaust port of the dust removal and purification box, thus completing the purification of exhaust gas and dust particles. After spraying, filtering and cooling, the water vapor carried by the exhaust gas and dust particles passes through the electrostatic capture net. Under the action of water vapor, the probability of flue gas being captured is increased, thus improving the efficiency of electrostatic dust removal and purification. Moreover, each filter drawer can be quickly pulled out from the dust removal and purification box for cleaning and maintenance or inserted for installation. The maintenance of the electrostatic dust removal and purification device is simple, the discharge electrode and electrostatic capture net are easy to disassemble, clean and install, and the replacement of the filter drawer is also relatively simple. The cleaned filter drawer can maintain good filtration and purification effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall installation structure of a wet drawer-type electrostatic precipitator for boilers according to this utility model;

[0017] Figure 2 This is a structural schematic diagram of a wet drawer-type electrostatic precipitator for boilers according to this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the dust removal and purification box of a wet drawer-type electrostatic precipitator for boilers according to this utility model.

[0019] Figure 4 This is a schematic diagram of the electrostatic capture drawer of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the electrostatic capture drawer of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the first filter drawer of this utility model;

[0022] In the drawings, base 1, dust removal and purification box 2, waste gas collection port 10, exhaust port 11, exhaust pipe 12, negative pressure induced draft fan 13, overflow tank 14, drainage port 15, blowdown port 16, overflow sealing shell 17, overflow port 18, first drawer port 201, first filter drawer 202, second drawer port 203, electrostatic capture drawer 204, third drawer port 205, second filter drawer 206, spraying device 207, baffle 208, electrostatic drawer shell 1040, handle 1040a, electrostatic capture net cylinder 1041, discharge electrode 1042, insulating shell 1042a, discharge support frame 1043, upper insertion port 1044, insulating column 1045, rear filter screen 1046, front filter screen 1047, lower insertion port 1048, fixed support column 1049, first drawer shell 2020, wire mesh filter layer 2021, first handle 2022. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below with reference to the drawings and preferred embodiments. However, it should be noted that many details in the description are only to make the reader have a thorough understanding of one or more aspects of the present application, and the aspects of the present application can be realized even without these specific details.

[0024] As Figure 1 and Figure 2As shown, according to the utility model provide a kind of wet drawer type boiler electrostatic precipitator, the electrostatic precipitator includes base 1 and is set on the dust removal and purification box 2 of base 1, waste gas collecting port 10 is provided on the side wall near the bottom of dust removal and purification box 1, exhaust port 11 is provided on the top end side wall of dust removal and purification box 1, first drawer opening 201, second drawer opening 203 and third drawer opening 205 are provided on the front outer wall of the dust removal and purification box 2 and from bottom to top, first filter drawer 202 is horizontally inserted and is arranged on first drawer opening 201, electrostatic capture drawer 204 is horizontally inserted and is arranged on second drawer opening 203, second filter drawer 206 is horizontally inserted and is arranged on the third drawer opening 205, spraying device 207 is arranged in the dust removal and purification box 2 below first filter drawer 202, the spraying device 207 is by spraying pipe and multiple atomizing nozzles 207a arranged on spraying pipe, by atomizing nozzle 207a to carry out humidification in dust removal and purification box 2, can collect dust particles in dust removal and purification box 2.Exhaust pipe 12 is connected on exhaust port 11, negative pressure induced draft fan 13 is provided on the exhaust pipe 12, waste gas collecting port 10 is communicated with the chimney 30 of boiler 3 by smoke exhaust pipe 10a, baffle 208 is obliquely arranged above first filter drawer 202 and below electrostatic precipitation device 204, one end of the baffle 208 is fixed on the side wall of dust removal and purification box 1 below electrostatic precipitation device 204, the other end of baffle 208 is obliquely extended downwards to the above of first filter drawer 202 to the central position of dust removal and purification box 1, baffle 208 is used to block the dust particles falling directly on first filter drawer 202 after being purified by electrostatic precipitation device 204, and block excess water vapor and flue gas into the electrostatic precipitation device 204, to facilitate the rapid purification treatment of flue gas and dust by electrostatic precipitation device 204;The utility model passes through negative pressure induced draft fan 13 and enters the dust removal and purification box 2 of electrostatic precipitator from waste gas collecting port 10 at high speed, first filter drawer 202 is filtered and intercepted after the excess waste gas and particles, high-voltage electrostatic capture waste gas particles are carried out after the high-voltage electric field area of electrostatic capture drawer 204, waste gas is purified and discharged from electrostatic capture drawer 204 to second filter drawer 206 to carry out again adsorption and filtration and then enter exhaust pipe 12 from exhaust port 11 of dust removal and purification box 1 and discharge.

[0025] In the utility model, such as Figure 1 、 Figure 2 and Figure 3As shown in the dust removal and purification box 2, the front wall edge of the dust removal and purification box 2 is rotatably connected with a protective door 20 for sealing the first filter drawer 202, the electrostatic capture drawer 204 and the second filter drawer 206 integrally, and the first drawer opening 201, the second drawer opening 203 and the third drawer opening 205 are arranged on the front wall of the dust removal and purification box 2 from bottom to top, the first filter drawer 202 is horizontally inserted into the first drawer opening 201, the electrostatic capture drawer 204 is horizontally inserted into the second drawer opening 203, and the second filter drawer 206 is horizontally inserted into the third drawer opening 205. Figure 4 and Figure 5 As shown in the dust removal and purification box 2, the front wall edge of the dust removal and purification box 2 is rotatably connected with a protective door 20 for sealing the first filter drawer 202, the electrostatic capture drawer 204 and the second filter drawer 206 integrally, and the first drawer opening 201, the second drawer opening 203 and the third drawer opening 205 are arranged on the front wall of the dust removal and purification box 2 from bottom to top, the first filter drawer 202 is horizontally inserted into the first drawer opening 201, the electrostatic capture drawer 204 is horizontally inserted into the second drawer opening 203, and the second filter drawer 206 is horizontally inserted into the third drawer opening 205. As shown in the dust removal and purification box 2, the front wall edge of the dust removal and purification box 2 is rotatably connected with a protective door 20 for sealing the first filter drawer 202, the electrostatic capture drawer 204 and the second filter drawer 206 integrally, and the first drawer opening 201, the second drawer opening 203 and the third drawer opening 205 are arranged on the front wall of the dust removal and purification box 2 from bottom to top, the first filter drawer 202 is horizontally inserted into the first drawer opening 201, the electrostatic capture drawer 204 is horizontally inserted into the second drawer opening 203, and the second filter drawer 206 is horizontally inserted into the third drawer opening 205.

[0026] As shown in the dust removal and purification box 2, the front wall edge of the dust removal and purification box 2 is rotatably connected with a protective door 20 for sealing the first filter drawer 202, the electrostatic capture drawer 204 and the second filter drawer 206 integrally, and the first drawer opening 201, the second drawer opening 203 and the third drawer opening 205 are arranged on the front wall of the dust removal and purification box 2 from bottom to top, the first filter drawer 202 is horizontally inserted into the first drawer opening 201, the electrostatic capture drawer 204 is horizontally inserted into the second drawer opening 203, and the second filter drawer 206 is horizontally inserted into the third drawer opening 205. Figure 5As shown, the outer wall of the discharge electrode 1042 between the discharge support frame 1043 and the upper port of the electrostatic capture net cylinder 1041 is provided with an insulating shell 1042a to prevent the discharge electrode 1042 from discharging in the external environment around the electrostatic capture net cylinder 1041. Four upper plug-in interfaces 1044 are arranged at the four corner positions of the opening of the electrostatic drawer shell 1040. An insulating column 1045 is respectively inserted and fixed in each of the upper plug-in interfaces 1044. The four corner positions of the discharge support frame 1043 are respectively fixed on the insulating columns 1045. A rear filter screen 1046 is arranged above the discharge support frame 1043 and is fixed on the insulating columns 1045. A front filter screen 1047 is arranged below the lower opening of the electrostatic drawer shell 1040. The front filter screen 1047 intercepts the smoke particles intercepted by the first filter drawer 202 again. Four lower plug-in interfaces 1048 are arranged at the four corner positions of the lower opening of the electrostatic drawer shell 1040. A fixed support column 1049 is fixed in the lower plug-in interface 1048. The front filter screen 1047 is supported and fixed on the drawer shell 1040 by the fixed support column 1049. When the electrostatic drawer shell 1040 is pulled out from the second drawer opening 203, the discharge support frame 1043 and the rear filter screen 1046 can be removed from the insulating columns 1045, and the front filter screen 1047 can be removed from the fixed support column 1049. At this time, the electrostatic capture net cylinder 1041, the discharge support frame 1043 and the rear filter screen 1046 can be conveniently cleaned and maintained.

[0027] In the utility model, as shown in Figure 1 、 Figure 2 and Figure 3 As shown, a sewage outlet 16 is arranged on the bottom side wall of the dust removal and purification box 2. The smoke dust particles falling in the purification process are discharged from the sewage outlet 16. An overflow groove 14 is arranged on the inner side wall of the dust removal and purification box 2 on the side above the sewage outlet 16. A drainage outlet 15 is arranged at the bottom of the overflow groove 14. An overflow sealing shell 17 is arranged on the outer side wall of the dust removal and purification box 2 and located outside the drainage outlet 15. An overflow port 18 is arranged on the top side wall of the overflow sealing shell 17. The height of the overflow port 17 is the same as the groove height of the overflow groove 14. The heights of the overflow groove 14 and the overflow port 17 are lower than the height of the waste gas collection port 10. The height of the sewage outlet 16 is lower than the height of the waste gas collection port 10. The sewage generated in the spray cooling and dust removal process is discharged from the overflow port 18 of the overflow sealing shell 17 when reaching the overflow groove 14. The overflow sealing shell 17 and the overflow groove 14 store a certain water level. The waste gas enters the dust removal and purification box 1 from the waste gas collection port 10, so that the smoke and dust particles are prevented from flowing out of the overflow groove 14. A sealing cover can be used on the overflow port 18 to block the smoke, preventing the smoke from overflowing.

[0028] In the utility model, as shown in Figure 6 The first filter drawer 202 includes a first drawer shell 2020, a wire mesh filter layer 2021 and a first handle 2022 arranged on the front outer wall of the first drawer shell 2020. The upper and lower ends of the first drawer shell 2020 are open. The first drawer shell 2020 is inserted into the first drawer opening 201 through the first handle 2022. The wire mesh filter layer 2021 is fixedly arranged in the first drawer shell 2020. The wire mesh filter layer 2021 in the first drawer shell 2020 intercepts the mist and smoke particles in the spray cooling and dust removal process. The structure of the second filter drawer 206 is the same as that of the first filter drawer 202. The second filter drawer 206 also includes a drawer shell with open upper and lower ends, a handle arranged on the front outer wall of the drawer shell and a wire mesh filter layer arranged in the drawer shell. The difference between the two is that the mesh density of the wire mesh filter layer in the second filter drawer 206 is less than that of the wire mesh filter layer 2021 in the first filter drawer 202. The wire mesh filter layer in the second filter drawer 206 is relatively dense, so as to intercept the smoke particles discharged after the purification treatment of the electrostatic capture drawer 204.

[0029] The above is only the preferred embodiment of the utility model. It should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the utility model. These improvements and refinements should also be considered within the protection scope of the utility model.

Claims

1. A wet type drawer type boiler electrostatic precipitator, characterized by: The electrostatic dust cleaning purifier comprises a base and a dust cleaning box arranged on the base, a waste gas collecting port is arranged on the side wall near the bottom of the dust cleaning box, an exhaust port is arranged on the top end side wall of the dust cleaning box, a first drawer port, a second drawer port and a third drawer port are arranged on the front outer wall of the dust cleaning box from bottom to top, a first filter drawer is horizontally inserted on the first drawer port, an electrostatic capture drawer is horizontally inserted on the second drawer port, and a second filter drawer is horizontally inserted on the third drawer port.

2. A wet type drawer type boiler electrostatic precipitator according to claim 1, characterized in that: The electrostatic capture drawer comprises an electrostatic drawer shell slidably inserted into the second drawer port, the downward two ends of the electrostatic drawer shell are open, a plurality of electrostatic capture net cylinders are arranged in an array vertically in the electrostatic drawer shell, a discharge electrode is vertically arranged in the center of each electrostatic capture net cylinder, the discharge electrode is arranged on the electrostatic drawer shell through a discharge support frame, and a handle is arranged on the front outer wall of the electrostatic drawer shell.

3. A wet type drawer type boiler electrostatic precipitator according to claim 2, characterized in that: An upper insertion port is arranged at each of the four turning foot positions of the opening part of the electrostatic drawer shell, an insulating column is respectively inserted into each upper insertion port, the four corner positions of the discharge support frame are respectively fixed on the insulating columns, and a rear filter screen fixed on the insulating columns is arranged above the discharge support frame.

4. A wet drawer-type electrostatic precipitator according to claim 2 or 3, characterized in that: An insulating shell is arranged on the outer wall of the discharge electrode between the discharge support frame and the upper end port of the electrostatic capture net cylinder.

5. A wet drawer-type electrostatic precipitator according to claim 2 or 3, characterized in that: A front filter screen is arranged below the lower opening part of the electrostatic drawer shell, a lower insertion port is arranged at each of the four turning foot positions of the lower opening part of the electrostatic drawer shell, a fixed support column is fixed in the lower insertion port, and the front filter screen is respectively supported and fixed on the electrostatic drawer shell through the fixed support column.

6. A wet type drawer type boiler electrostatic precipitator according to claim 1, characterized in that: A baffle is arranged above the first filter drawer and below the electrostatic dust removal device.

7. A wet type drawer type boiler electrostatic precipitator according to claim 1, characterized in that: An exhaust pipe is connected to the exhaust port, and a negative pressure induced draft fan is arranged on the exhaust pipe.

8. A wet type drawer type boiler electrostatic precipitator according to claim 1 or 7, characterized in that: A sewage discharge port is arranged on the bottom side wall of the dust cleaning box, an overflow groove is arranged on the inner side wall of the dust cleaning box above the sewage discharge port, and a drain port is arranged on the bottom of the overflow groove.

9. A wet type drawer type boiler electrostatic precipitator according to claim 8, characterized in that: An overflow sealing shell is arranged on the outer side wall of the dust cleaning box and outside the drain port, and an overflow port is arranged on the top side wall of the overflow sealing shell.

10. A wet type drawer type boiler electrostatic precipitator according to claim 1 or 6, characterized in that: The first filter drawer comprises a first drawer shell, a silk screen filter layer and a first handle arranged on the front outer wall of the first drawer shell, the upper and lower ends of the first drawer shell are open, and the silk screen filter layer is fixedly arranged in the first drawer shell.

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