Electrostatic dust collection and recovery device

Abstract

The utility model relates to the technical field of dust removal equipment, and discloses an electrostatic dust removal recovery device which comprises a shell, an electrostatic dust removal device and a recovery device, the multiple dust collection electric fields are arranged in the shell and are sequentially arranged in the direction from the air inlet to the air outlet; the at least two dust collection bins are arranged in the shell and located below the dust collection electric fields, the at least two dust collection bins are arranged at intervals, and each dust collection bin corresponds to at least one dust collection electric field so as to collect dust in the corresponding dust collection electric field; the dust storage bins are arranged below the shell, the number of the dust storage bins is equal to that of the dust collection bins, the dust storage bins and the dust collection bins are in one-to-one correspondence, and each dust storage bin communicates with the corresponding dust collection bin. The dust in the multiple dust collection electric fields is collected and stored separately, then classified recycling treatment is conducted, full recycling of dust resources is achieved, fine management is facilitated, and resources in the dust can be fully utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to an electrostatic dust removal and recycling device. Background Art

[0002] Dust removal equipment is commonly used in the industrial production process. For example, in the steel production process, by-products such as converter gas dust are inevitably generated. The dust contains various components such as iron, carbon, zinc, and lead, which not only pollute the environment but also may pose a hazard to human health. Therefore, the steel industries attach great importance to dust removal equipment. At present, most steel plants adopt the dry dust removal technology for converter gas. Through the front-end flue cooling, evaporative cooling, and rough dust removal, part of the dust is removed, collected, and recycled; the remaining dust is removed in the electrostatic precipitator, making the converter gas a qualified converter gas with a qualified dust content.

[0003] Most of the existing electrostatic precipitators or other dust removal equipment in the prior art have a multi-stage dust removal structure to remove dust of different components. However, when cleaning the dust accumulated on the dust removal structure, the dust on each stage of the dust removal structure is usually knocked down into the ash hopper and then uniformly discharged or recycled. Since the dust components on different stages of the dust removal structure are different, the uniformly collected dust becomes secondary solid waste again, increasing the difficulty of recycling dust of different components. The existing dust removal equipment cannot classify and recycle the dust, and the resources of electric furnace dust are not fully recycled. Summary of the Utility Model

[0004] In view of this, the utility model provides an electrostatic dust removal and recycling device to solve the problem that the dust removal equipment cannot classify and recycle the dust.

[0005] The utility model provides an electrostatic dust removal and recycling device, including: a housing with an air inlet at one end and an air outlet at the other end; a plurality of dust collection electric fields arranged in the housing, and the plurality of dust collection electric fields are arranged in sequence along the direction from the air inlet to the air outlet; at least two dust collection bins arranged in the housing and located below the dust collection electric fields, and the at least two dust collection bins are spaced apart from each other, and each dust collection bin corresponds to at least one of the dust collection electric fields to collect the dust in the corresponding dust collection electric field; a dust storage bin arranged below the housing, the number of the dust storage bins is equal to and corresponds to the number of the dust collection bins one by one, and each dust storage bin is communicated with one of the corresponding dust collection bins.

[0006] Beneficial effects: By providing an air inlet at one end of the housing and an air outlet at the other end, and arranging a plurality of dust collection electric fields in sequence along the direction from the air inlet to the air outlet, the adsorption of dust particles in the gas introduced into the housing is achieved through the plurality of dust collection electric fields, so as to achieve dust removal of the gas. And by providing at least two dust collection bins below the dust collection electric fields, each dust collection bin corresponding to at least one dust collection electric field, the dust in the plurality of dust collection electric fields enters at least two different dust collection bins, and the dust in each dust collection bin further enters a corresponding dust storage bin, that is, the separate collection and storage of the dust in the plurality of dust collection electric fields is realized. Furthermore, the dust can be classified and recycled according to the different types of dust in different electric fields, so as to achieve the full recycling and utilization of dust resources, which is convenient for refined management and can also make full use of the resources in the dust.

[0007] In an alternative embodiment, the electrostatic dust removal and recycling device further includes: a conveying unit disposed between the dust collection bin and the dust storage bin, the number of the conveying units being equal to and corresponding one-to-one to the number of the dust collection bins, and the conveying unit being adapted to receive the dust in the corresponding dust collection bin and convey it to the dust storage bin.

[0008] Beneficial effects: By providing a conveying unit between the dust collection bin and the dust storage bin, it is convenient to convey the dust in the dust collection bin to the corresponding dust storage bin, which is convenient for realizing the transfer of dust. And by setting the number of the conveying units equal to the number of the dust collection bins, each conveying unit corresponding to a dust collection bin and a dust storage bin, the separate conveying of the dust in each dust collection bin is realized, further ensuring the classified recycling and treatment of the dust in different electric fields.

[0009] In an alternative embodiment, a dust discharge port is provided at the lower end of the dust collection bin, and the conveying unit is communicated with the dust collection bin through the dust discharge port.

[0010] Beneficial effects: By providing a dust discharge port at the lower end of the dust collection bin, it is convenient for the dust in the dust collection bin to be discharged into the conveying unit located below the dust collection bin, with a simple structure and convenient operation.

[0011] In an alternative embodiment, the conveying unit includes: a housing, an ash inlet corresponding to the dust discharge port is provided on the upper side of the housing, the ash inlet is communicated with the dust discharge port, an ash outlet is provided on the lower side of the housing, and the ash outlet is communicated with the dust storage bin.

[0012] Beneficial effects: The housing is used to collect the dust falling out of the dust collection bin. By providing an ash inlet on the upper side of the housing that communicates with the ash discharge port, it is convenient for the dust in the dust collection bin to enter the housing through the ash discharge port and the ash inlet. At the same time, by providing an ash outlet on the lower side of the housing that communicates with the dust storage bin, it is convenient for the dust in the housing to be further introduced into the dust storage bin. The housing has a protective function, and there is no dust spillage during the entire process of dust transmission, which is beneficial to avoiding dust pollution to the surrounding environment and also avoiding the mixing of other impurities into the dust.

[0013] In an optional implementation manner, the conveying unit further includes an ash conveying chain disposed inside the housing. The ash conveying chain includes: a conveyor belt, a driving wheel, and a supporting wheel. The conveyor belt is wound around the supporting wheel and the driving wheel, and the conveyor belt is located directly below the ash discharge port. The driving wheel drives the conveyor belt to rotate in a preset direction; and / or, the ash outlet is in a funnel shape.

[0014] Beneficial effects: By providing an ash conveying chain inside the housing, the driving wheel and the supporting wheel in the ash conveying chain support the conveyor belt. At the same time, the driving wheel is used to drive the conveyor belt to move, and the supporting wheel follows, realizing the cyclic movement of the conveyor belt. And by setting the conveyor belt directly below the ash discharge port, the dust falling from the dust collection bin drops onto the conveyor belt, and then through the movement of the conveyor belt, the dust received on the conveyor belt is conveyed to the ash outlet for discharge. The entire process can achieve automatic conveying of dust, and the dust falling from the dust collection bin can be directly conveyed above the ash outlet, thereby improving work efficiency. The ash outlet being in a funnel shape facilitates the introduction of dust into the dust storage bin.

[0015] In an optional implementation manner, the number of dust collection electric fields is four, which are the first electric field, the second electric field, the third electric field, and the fourth electric field in sequence along the direction from the air inlet to the air outlet.

[0016] Beneficial effects: By setting the number of dust collection electric fields to four, the gas can be dusted four times through the action of the four dust collection electric fields in sequence, thereby achieving a high dust removal efficiency. It can not only ensure sufficient dust removal of the gas but also avoid the problem of increased cost caused by too many dust collection electric fields.

[0017] In an optional implementation manner, the number of dust collection bins is two, including a first dust collection bin and a second dust collection bin. The first dust collection bin corresponds to the first electric field and the second electric field, and the second dust collection bin corresponds to the third electric field and the fourth electric field.

[0018] Beneficial effects: By setting up two dust collection bins to separately collect the dust removal ash in the first electric field and the second electric field with relatively low zinc content, and the dust removal ash with relatively high zinc content in the third electric field and the fourth electric field, it is more in line with the actual situation of the dust components in each electric field, realizes the separate collection of the dust removal ash with different zinc contents, and facilitates subsequent classified recycling and utilization.

[0019] In an alternative embodiment, the number of the dust storage bins is two, the dust storage bins include a first dust storage bin and a second dust storage bin, the first dust storage bin corresponds to the first dust collection bin, and the second dust storage bin corresponds to the second dust collection bin; the number of the conveying units is two, the conveying units include a first conveying unit and a second conveying unit, the first conveying unit is arranged between the first dust collection bin and the first dust storage bin, and the second conveying unit is arranged between the second dust collection bin and the second dust storage bin.

[0020] Beneficial effects: The numbers of the dust collection bins, the conveying units, and the dust storage bins are all two. The first conveying unit is used to convey the dust in the first dust collection bin to the first dust storage bin, and the second conveying unit is used to convey the dust in the second dust collection bin to the second dust storage bin, ensuring the classified collection, conveying, and storage of the dust.

[0021] In an alternative embodiment, the number of the dust collection bins is four, and the four dust collection bins correspond to the four dust collection electric fields one by one.

[0022] Beneficial effects: Each dust collection electric field corresponds to a dust collection bin, realizing the separate collection of the dust removal ash in the four dust collection electric fields, further avoiding the mixing of the dust removal ash in different dust collection electric fields, and thus enabling more detailed classified recycling according to the different components of the dust removal ash in each dust collection electric field, improving the utilization rate of resources.

[0023] In an alternative embodiment, the number of the conveying units is four, and the four conveying units correspond to the four dust collection bins one by one; the number of the dust storage bins is four, and the four dust storage bins correspond to the four conveying units one by one.

[0024] Beneficial effects: The dust in each dust collection bin is conveyed to the corresponding dust storage bin through the corresponding conveying unit, ensuring the separate collection, conveying, and storage of the dust in each dust collection electric field, and facilitating the further treatment of the dust in each dust collection electric field subsequently. Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic structural diagram of an electrostatic dust removal and recovery device according to an embodiment of the present utility model;

[0027] Figure 2 It is a particle size distribution diagram of the dust in each of the four electric fields according to an embodiment of the present utility model.

[0028] Explanation of the reference numerals:

[0029] 1. Housing; 101. Air inlet; 102. Air outlet; 110. First electric field; 120. Second electric field; 130. Third electric field; 140. Fourth electric field; 210. First dust collection bin; 220. Second dust collection bin; 201. Ash discharge port; 310. First conveying unit; 320. Second conveying unit; 301. Conveyor belt; 302. Driving wheel; 303. Housing; 304. Ash outlet; 305. First supporting wheel; 306. Second supporting wheel; 410. First dust storage bin; 420. Second dust storage bin. Specific embodiments

[0030] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0031] Converter gas dust is an inevitable by-product in the steel production process, mainly from the flue gas and waste gas during converter steelmaking. The converter gas dust content per ton of steel is 80 - 150 g / Nm 3, this dust contains various components such as iron, carbon, zinc, and lead, which not only pollute the environment but also may pose hazards to human health. The steel industries attach particular importance to environmental protection equipment. In related technologies, an electrostatic precipitator is used to remove the dust in converter gas. The converter gas sequentially passes through each electric field of the electrostatic precipitator. Through the high-voltage electric field, the dust particles in the flue gas are charged, and under the action of the electric field force, the charged dust particles move towards the dust collecting electrode and adhere to it. In this process, the dust particles are effectively separated from the gas stream and attached to the dust collecting electrode. As time goes by, a thick layer of dust, namely dust removal ash, will gradually accumulate on the dust collecting electrode. To maintain the continuous and efficient operation of the precipitator, it is necessary to regularly remove this accumulated dust removal ash. After the ash cleaning treatment, the fallen dust removal ash will usually naturally fall to the bottom of the precipitator for collecting dust removal ash under the action of gravity. After the dust removal ash is collected, it is uniformly discharged or further processed through the ash discharge port of the ash hopper. However, due to the different dust components on the dust collecting electrodes in different electric fields, the uniformly collected dust becomes secondary solid waste again, increasing the difficulty of recycling the dust removal ash with different components, and the resources of the electric furnace dust removal ash cannot be fully recycled.

[0032] The following will describe the embodiments of the present invention in conjunction with Figures 1 to 2 .

[0033] According to an embodiment of the present invention, an electrostatic dust removal and recycling device is provided, including: a housing 1, a plurality of dust collecting electric fields, at least two dust collecting bins, and a dust storage bin. An air inlet 101 is provided at one end of the housing 1 and an air outlet 102 is provided at the other end; the plurality of dust collecting electric fields are arranged in the housing 1 and are sequentially arranged along the direction from the air inlet 101 to the air outlet 102; at least two dust collecting bins are arranged in the housing 1 and are located below the dust collecting electric fields, and the at least two dust collecting bins are spaced apart from each other. Each dust collecting bin corresponds to at least one dust collecting electric field to collect the dust in the corresponding dust collecting electric field; the dust storage bin is arranged below the housing 1, and the number of the dust storage bins is equal to and corresponds one by one to the number of the dust collecting bins, and each dust storage bin communicates with one corresponding dust collecting bin. Herein, "below" refers to the direction of "down" indicated by the arrow in Figure 1 .

[0034] Applying the electrostatic dust removal and recovery device of this embodiment, an air inlet 101 is provided at one end of the housing 1 and an air outlet 102 is provided at the other end, and a plurality of dust collection electric fields are arranged in sequence along the direction from the air inlet 101 to the air outlet 102. The adsorption of dust particles in the gas introduced into the housing 1 is realized through the plurality of dust collection electric fields, so as to achieve dust removal of the gas. And by arranging at least two dust collection bins below the dust collection electric fields, each dust collection bin corresponding to at least one dust collection electric field, the dust in the plurality of dust collection electric fields enters into at least two different dust collection bins, and the dust in each dust collection bin further enters into a corresponding dust storage bin, that is, the separate collection and storage of the dust in the plurality of dust collection electric fields are realized. Furthermore, classification and recovery treatment can be carried out according to the different types of dust in different electric fields, so as to achieve the full recovery and utilization of dust resources, facilitate refined management, and also make the resources in the dust be fully utilized.

[0035] It should be noted that a dust collection electrode is provided in each dust collection electric field, and the gas sequentially passes through each dust collection electric field along the Figure 1 direction of "A" indicated by the arrow in the figure. The dust particles in the gas move towards the dust collection electrode under the action of the electric field force and adhere to the dust collection electrode, thereby realizing the separation of the dust in the gas; when cleaning the dust accumulated on the dust collection electrode, the dust falls off from the dust collection electrode and falls into the dust collection bin located below the dust collection electric field under the action of gravity. The gas introduced into the dust collection electric field is converter gas, and the converter gas contains various components such as iron, carbon, zinc, and lead. By removing dust from the converter gas through the dust collection electric field, most of the dust can be removed, making the converter gas a converter gas with qualified dust content.

[0036] Preferably, the housing 1 is arranged horizontally, the air inlet 101 is located on one side of the housing 1 along the horizontal direction, the air outlet 102 is located on the other side of the housing 1 along the horizontal direction, and the plurality of electric fields in the housing 1 are arranged in sequence along the horizontal direction, which is convenient for the gas to enter and exit the housing 1 and for the electric field to fully act on the gas when the gas passes through each electric field. Among them, the horizontal direction refers to the direction perpendicular to the Figure 1 "up and down direction" indicated by the arrow in the figure.

[0037] Preferably, the electric field applied in the dust collection electric field is a high-voltage electric field.

[0038] In one embodiment, the electrostatic dust collection and recovery device further includes: a conveying unit, which is arranged between the dust collection bin and the dust storage bin. The number of conveying units is equal to and in one-to-one correspondence with the number of dust collection bins. The conveying unit is adapted to receive the dust in the corresponding dust collection bin and convey it to the corresponding dust storage bin. The number of conveying units, the number of dust collection bins, and the number of dust storage bins are all equal and in one-to-one correspondence. By arranging the conveying unit between the dust collection bin and the dust storage bin, it is convenient to convey the dust in the dust collection bin to the corresponding dust storage bin, facilitating the transfer of dust. And by setting the number of conveying units equal to the number of dust collection bins, each conveying unit corresponds to one dust collection bin and one dust storage bin, realizing the separate conveyance of the dust in each dust collection bin, and further ensuring the classified recovery and treatment of the dust in different electric fields.

[0039] In one embodiment, the number of dust collection electric fields is four, and they are the first electric field 110, the second electric field 120, the third electric field 130, and the fourth electric field 140 in sequence along the direction from the air inlet 101 to the air outlet 102. By setting the number of dust collection electric fields to four, the gas can be dusted four times through the action of the four dust collection electric fields in sequence, thus achieving a high dust removal efficiency. It can not only ensure the full dust removal of the gas but also avoid the problem of increased cost caused by too many dust collection electric fields.

[0040] After the dust collection electric field actually operates, the dust adsorbed on the dust collection electrodes in the four dust collection electric fields is collected respectively, and a group of the collected dust is randomly selected for testing. The test results are as Figure 2 and shown in Table 1. The particle size distribution diagrams of the dust in the four dust collection electric fields are as Figure 2 shown, where a represents the average particle size of the dust in the first electric field 110, b represents the average particle size of the dust in the second electric field 120, c represents the average particle size of the dust in the third electric field 130, and d represents the average particle size of the dust in the fourth electric field 140. The dust components and their proportions in the four electric fields are shown in Table 1.

[0041] Table 1 Dust component proportion table in four electric fields

[0042] First electric field Second electric field Third electric field Fourth electric field Na / 2.178 / 2.516 Mg 0.689 0.425 0.347 0.338 Al 0.074 0.037 0.015 0.015 Si 0.488 0.48 0.509 0.435 P 0.083 0.06 0.05 0.039 S 0.156 0.183 0.326 0.249 Cl 0.986 1.417 1.93 1.902 K 1.51 2.419 3.678 3.629 Ca 8.077 4.661 1.532 0.591 Cr 0.158 0.129 0.147 0.135 Mn 0.983 1.018 1.275 1.411 Fe 83.221 82.141 83.49 82.703 Zn 3.243 4.586 6.285 5.622 Mo 0.03 0.039 0.043 0.043 Pb 0.104 0.176 0.222 0.209 Sr 0.014 0.014 / / Co 0.147 / 0.152 0.164 Ti 0.039 0.037 / /

[0043] Combined with Figure 2 the data in Table 1 for analysis, it can be seen that:

[0044] 1. The particle size distribution law of the four electric fields is that from the first electric field 110 to the fourth electric field 140, the average particle size of the dust gradually decreases;

[0045] 2. Dust components: The zinc content in the third electric field 130 and the fourth electric field 140 increases compared with that in the first electric field 110 and the second electric field 120, and it is hazardous waste containing zinc solid waste;

[0046] 3. On-site measurement shows that the first electric field 110 and the second electric field 120 remove approximately 70% of the total content of the dust from the electric furnace, and the third electric field 130 and the fourth electric field 140 remove approximately 30% of the remaining dust content.

[0047] It should be noted that the dust with a relatively high zinc content is hazardous waste containing zinc solid waste. For the traditional method of collecting all the dust from the electric dust collector into a single dust bin after the electro-static precipitation, all the dust is collected together. The dust in the third electric field 130 and the fourth electric field 140 with a relatively high zinc content is mixed with the dust in the first electric field 110 and the second electric field 120 with a relatively low zinc content, resulting in new hazardous waste. However, the electrostatic dust removal recovery device of this embodiment can separately collect the dust in different electric fields by arranging at least two dust collection bins below the dust collection electric field. The dust with a high zinc content can be collected together for harmless treatment as resources, and the dust with a relatively low zinc content can be collected separately and recycled back to the sintering process, realizing classified recovery and treatment according to the different types of dust in different electric fields, and also making full use of the resources in the dust.

[0048] In one embodiment, the number of dust collection bins is two, including a first dust collection bin 210 and a second dust collection bin 220. The first dust collection bin 210 corresponds to the first electric field 110 and the second electric field 120, and the second dust collection bin 220 corresponds to the third electric field 130 and the fourth electric field 140. The dust in the first electric field 110 and the second electric field 120 has a relatively low zinc content. The first dust collection bin 210 is used to collect the dust with a relatively low zinc content in the first electric field 110 and the second electric field 120, facilitating subsequent recycling, harmless treatment, or resource utilization of this part of the dust. The dust in the third electric field 130 and the fourth electric field 140 has a relatively high zinc content. The second dust collection bin 220 is used to collect the dust with a relatively high zinc content in the third electric field 130 and the fourth electric field 140, facilitating subsequent use of this part of the dust as raw materials for producing pig iron, lead oxide, and zinc oxide dust, and for harmless treatment or resource utilization. By arranging two dust collection bins to separately collect the dust with a relatively low zinc content in the first electric field 110 and the second electric field 120 and the dust with a relatively high zinc content in the third electric field 130 and the fourth electric field 140, it is more in line with the actual situation of the dust composition in each electric field, realizing separate collection of dust with different zinc contents and facilitating subsequent classified recycling and utilization.

[0049] In one embodiment, the number of dust storage bins is two. The dust storage bins include a first dust storage bin 410 and a second dust storage bin 420. The first dust storage bin 410 corresponds to the first dust collection bin 210, and the second dust storage bin 420 corresponds to the second dust collection bin 220. The number of conveying units is two, including a first conveying unit 310 and a second conveying unit 320. The first conveying unit 310 is arranged between the first dust collection bin 210 and the first dust storage bin 410, and the second conveying unit 320 is arranged between the second dust collection bin 220 and the second dust storage bin 420. The numbers of the dust collection bins, the conveying units, and the dust storage bins are all two. The first conveying unit 310 is used to convey the dust in the first dust collection bin 210 to the first dust storage bin 410, and the second conveying unit 320 is used to convey the dust in the second dust collection bin 220 to the second dust storage bin 420, ensuring the classified collection, conveying, and storage of the dust.

[0050] Specifically, the first dust storage bin 410 is a coarse dust bin, and the second dust storage bin 420 is a fine dust bin.

[0051] In addition, in other embodiments, the number of dust collection bins can also be four, and the four dust collection bins correspond to four dust collection electric fields one by one. Each dust collection electric field corresponds to a dust collection bin, realizing the separate collection of the dust removal ash in the four dust collection electric fields, further avoiding the mixing of the dust removal ash in different dust collection electric fields, and thus enabling more detailed classified recycling according to the different compositions of the dust removal ash in each dust collection electric field, improving the utilization rate of resources.

[0052] In one embodiment, the number of conveying units is four, and the four conveying units correspond to the four dust collection bins one by one; the number of dust storage bins is four, and the four dust storage bins correspond to the four conveying units one by one. When the number of dust collection bins is four, the number of conveying units is four, and the number of dust storage bins is four. Each dust collection bin corresponds to a conveying unit and a dust storage bin. The dust in each dust collection bin is conveyed to the corresponding dust storage bin through the corresponding conveying unit, ensuring the separate collection, conveying, and storage of the dust in each dust collection electric field, and facilitating the subsequent further treatment of the dust in each dust collection electric field.

[0053] In one embodiment, a dust discharging port 201 is arranged at the lower end of the dust collection bin, and the conveying unit is connected to the dust collection bin through the dust discharging port 201. By arranging the dust discharging port 201 at the lower end of the dust collection bin, it is convenient for the dust in the dust collection bin to be discharged into the conveying unit located below the dust collection bin, with a simple structure and convenient operation. Herein, the lower end refers to Figure 1 the end in the direction pointed by the arrow "down", that is, the end of the dust collection bin far from the dust collection electric field.

[0054] Specifically, the dust discharging port penetrates the bottom wall of the dust collection bin, and the dust discharging ports 201 can be evenly distributed in a mesh shape on the bottom wall of the dust collection bin.

[0055] In one embodiment, the conveying unit includes: a housing 303. An ash inlet corresponding to the ash discharge port 201 is provided on the upper side of the housing 303. The ash inlet is in communication with the ash discharge port 201. An ash outlet 304 is provided on the lower side of the housing 303. The ash outlet 304 is in communication with the dust storage bin. Herein, the upper side refers to the side in the direction of "up" indicated by the arrow in Figure 1 i.e., the side of the housing 303 close to the dust collection bin; the lower side refers to the side in the direction of "down" indicated by the arrow in Figure 1 i.e., the side of the housing 303 away from the dust collection bin. The housing 303 is used to collect the dust falling out of the dust collection bin. By providing an ash inlet on the upper side of the housing 303 that is in communication with the ash discharge port 201, it is convenient for the dust in the dust collection bin to enter the housing 303 through the ash discharge port 201 and the ash inlet. At the same time, by providing an ash outlet 304 on the lower side of the housing 303 that is in communication with the dust storage bin, it is convenient for the dust in the housing 303 to be further introduced into the dust storage bin. The housing has a protective function, and there is no dust spillage during the entire process of dust transmission, which is beneficial to avoiding dust pollution to the surrounding environment and can also prevent other impurities from being mixed into the dust.

[0056] In one embodiment, it further includes an ash conveying chain disposed inside the housing 303. The ash conveying chain includes: a conveyor belt 301, and a conveyor belt and a driving wheel 302. The conveyor belt 301 is wound around the supporting wheels and the driving wheel 302, and the conveyor belt 301 is located directly below the ash discharge port 201. The driving wheel 302 drives the conveyor belt 301 to rotate in a preset direction. By providing an ash conveying chain inside the housing 303, the driving wheel 302 and the supporting wheels in the ash conveying chain support the conveyor belt 301. At the same time, the driving wheel 302 is used to drive the conveyor belt 301 to move, and the supporting wheels follow, realizing the cyclic movement of the conveyor belt 301. And by setting the conveyor belt directly below the ash discharge port 201, the dust falling from the dust collection bin drops onto the conveyor belt 301. Then, through the movement of the conveyor belt 301, the dust received on the conveyor belt 301 is conveyed to the ash outlet 304 for export. The entire process can achieve automatic conveying of the dust, and the dust falling from the dust collection bin can be directly conveyed above the ash outlet 304, thereby improving work efficiency. Herein, rotating in a preset direction means that the upper side of the conveyor belt 301 moves in the direction towards the ash outlet 304, i.e., the rotation direction of the conveyor belt 301 is as shown by the arrow above the conveyor belt 301 in Figure 1 i.e., the diameter of the supporting wheels is smaller than that of the driving wheel 302, and the number of the supporting wheels is two, namely the first supporting wheel 305 and the second supporting wheel 306.

[0057] In one embodiment, the ash discharge port 304 is funnel-shaped. The larger opening end of the funnel is connected to the housing 303 and is in communication with the interior of the housing 303. The smaller closing end of the funnel faces away from the housing 303 and is adapted to cooperate with the opening end of the dust storage bin. The funnel-shaped ash discharge port 304 facilitates the introduction of dust into the dust storage bin.

[0058] The electrostatic dust removal and recycling device of this embodiment realizes the classified recycling and utilization of dust, reduces the treatment amount of lead-zinc-containing dust, uses solid waste and hazardous waste as resources, which is beneficial to improving the resource utilization rate and saving costs.

[0059] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. An electrostatic dust removal and recycling device, characterized in that, Comprising: A housing (1) with an air inlet (101) provided at one end and an air outlet (102) provided at the other end; A plurality of dust collection electric fields arranged in the housing (1), and the plurality of dust collection electric fields are arranged in sequence along the direction from the air inlet (101) to the air outlet (102); At least two dust collection bins arranged in the housing (1) and located below the dust collection electric fields, the at least two dust collection bins are spaced apart from each other, and each dust collection bin corresponds to at least one of the dust collection electric fields to collect the dust in the corresponding dust collection electric field; A dust storage bin arranged below the housing (1), the number of the dust storage bins is equal to and corresponds one-to-one with the number of the dust collection bins, and each dust storage bin communicates with one of the corresponding dust collection bins.

2. The electrostatic dust removal and recovery device according to claim 1, wherein The electrostatic dust removal and recovery device further includes: a conveying unit arranged between the dust collection bin and the dust storage bin, the number of the conveying units is equal to and corresponds one-to-one with the number of the dust collection bins, and the conveying unit is adapted to receive the dust in the corresponding dust collection bin and convey it to the dust storage bin.

3. The electrostatic dust removal and recycling device according to claim 2, wherein, A dust discharging port (201) is provided at the lower end of the dust collection bin, and the conveying unit is connected to the dust collection bin through the dust discharging port (201).

4. The electrostatic dust removal and recovery device according to claim 3, characterized in that, The conveying unit includes: a housing (303), an ash inlet corresponding to the dust discharging port (201) is provided on the upper side of the housing (303), the ash inlet is communicated with the dust discharging port (201), an ash outlet (304) is provided on the lower side of the housing (303), and the ash outlet (304) communicates with the dust storage bin.

5. The electrostatic dust removal and recovery device according to claim 4, wherein The conveying unit further includes an ash conveying chain arranged inside the housing (303), and the ash conveying chain includes: a conveyor belt (301), a driving wheel (302) and supporting wheels, the conveyor belt (301) is wound around the supporting wheels and the driving wheel (302), and the conveyor belt (301) is located directly below the dust discharging port (201), and the driving wheel (302) drives the conveyor belt (301) to rotate in a preset direction; And / or, the ash outlet (304) is funnel-shaped.

6. The electrostatic dust removal and recycling device according to any one of claims 2 to 5, characterized in that, The number of the dust collection electric fields is four, which are successively the first electric field (110), the second electric field (120), the third electric field (130), and the fourth electric field (140) along the direction from the air inlet (101) to the air outlet (102).

7. The electrostatic dust removal and recovery device according to claim 6, characterized in that, The number of the dust collection bins is two, including a first dust collection bin (210) and a second dust collection bin (220), the first dust collection bin (210) corresponds to the first electric field (110) and the second electric field (120), and the second dust collection bin (220) corresponds to the third electric field (130) and the fourth electric field (140).

8. The electrostatic dust removal and recovery device according to claim 7, characterized in that, The number of the dust storage bins is two, and the dust storage bins include a first dust storage bin (410) and a second dust storage bin (420), the first dust storage bin (410) corresponds to the first dust collection bin (210), and the second dust storage bin (420) corresponds to the second dust collection bin (220); The number of the conveying units is two, and the number of the conveying units includes a first conveying unit (310) and a second conveying unit (320). The first conveying unit (310) is arranged between the first dust collection bin (210) and the first dust storage bin (410), and the second conveying unit (320) is arranged between the second dust collection bin (220) and the second dust storage bin (420).

9. The electrostatic dust removal and recovery device according to claim 6, wherein The number of the dust collection bins is four, and the four dust collection bins correspond to the four dust collection electric fields one by one.

10. The electrostatic dust removal and recovery device according to claim 9, characterized in that, The number of the conveying units is four, and the four conveying units correspond to the four dust collection bins one by one; the number of the dust storage bins is four, and the four dust storage bins correspond to the four conveying units one by one.

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