Electrostatic field dust removal device

Abstract

An electrostatic field dust removal device, comprising: at least one negative electrode plate (10) for releasing negative charges; at least one positive electrode plate (20) alternately arranged in parallel with the at least one negative electrode plate (10) and used for receiving the negative charges released by the at least one negative electrode plate (10), wherein an electrostatic dust removal region and a glow plasma region are formed between each negative electrode plate (11) among the at least one negative electrode plate (10) and each positive electrode plate (21) among the at least one positive electrode plate (20); and exhaust gas flows between each negative electrode plate (11) and each positive electrode plate (21) and is alternately purified, wherein the exhaust gas undergoes corona-based purification in the electrostatic dust removal region and is ionized in the glow plasma region.

Description

Electrostatic field dust removal device TECHNICAL FIELD

[0001] The present application discloses an electrostatic field dust removal device. BACKGROUND

[0002] In the industrial production process, such as power plants, chemical plants, metallurgical and mining operations, etc., often accompanied by fuel combustion or chemical reaction. Therefore, a large amount of flue gas and dust will be generated in these industrial production processes. These flue gas and dust contain a large amount of harmful ingredients to the environment, for example, the industrial setting machine commonly used in the printing and dyeing industry, the main components of the exhaust gas include a large amount of smoke, dust and lint, and mix a large amount of oil mist, polystyrene organic matter, printing and dyeing auxiliaries, etc. If the exhaust gas is not purified, it will further undergo physical and chemical changes in the pipeline, causing environmental pollution and even spontaneous combustion, causing fires and serious safety hazards.

[0003] In addition to using various filter screen devices for physical isolation, the current electrostatic precipitation technology is also widely used. For example, tubular electrostatic precipitator, plate electrode electrostatic precipitator, ring electrostatic field dust removal, etc. But the above-mentioned electrostatic precipitation device is often affected by the composition of the exhaust gas, specific resistance, flow parameters, etc. to cause low dust removal efficiency, purification is not up to standard, and the electric power consumption and equipment cost are generally high.

[0004] In view of the fact that the dust removal effect, power consumption and safety of the existing electrostatic precipitation device need to be optimized, it is hoped to provide a new type of electrostatic field dust removal device to solve the above problems. SUMMARY

[0005] In order to solve at least one aspect of the above problems and defects in the prior art, the embodiments of the present application provide an electrostatic field dust removal device, which simultaneously realizes corona dust removal and purification and plasma ionization bacteria inhibition and odor removal through two negative charge release modes. The technical scheme is as follows:

[0006] According to one aspect of the present application, an electrostatic field dust removal device is provided, which comprises:

[0007] At least one negative electrode plate for releasing negative charge;

[0008] At least one positive electrode plate is arranged alternately and in parallel with the at least one negative electrode plate, for receiving the negative charge released by the at least one negative electrode plate;

[0009] Wherein, each negative electrode plate of the at least one negative electrode plate and each positive electrode plate of the at least one positive electrode plate form an electrostatic dust removal area and a glow plasma area therebetween;

[0010] The exhaust gas flows between each negative electrode plate and each positive electrode plate and is alternately purified, wherein the exhaust gas is purified by a corona in the electrostatic precipitation area and is ionized in the glow plasma area.

[0011] In some embodiments, at least two first spike structures are arranged on each negative electrode plate, and each negative electrode plate releases negative charges through the tips of the at least two first spike structures; the at least two first spike structures are alternately arranged on the plate surfaces on both sides of each negative electrode plate, respectively.

[0012] Further, at least two second spike structures are arranged on each positive electrode plate in correspondence with the arrangement of the at least two first spike structures on each negative electrode plate.

[0013] In some embodiments, the tips of the at least two first spike structures on each negative electrode plate release negative charges to the plate surface of the positive electrode plate directly opposite to the negative electrode plate, forming an electrostatic precipitation area.

[0014] Further, the plane on the plate surface opposite to the plate surface where the at least two first spike structures on each negative electrode plate are located releases negative charges to the tips of the at least two second spike structures on the positive electrode plate directly opposite to the negative electrode plate, forming a glow plasma area.

[0015] In some embodiments, each of the at least two first spike structures and each of the at least two second spike structures comprises at least two discharge tips, wherein the at least two discharge tips comprise four discharge tips arranged in central symmetry, or three discharge tips arranged in a triangle.

[0016] In some embodiments, each first spike structure is formed by stamping each negative electrode plate, or each first spike structure is separately machined and then welded on each negative electrode plate; each second spike structure is formed by stamping each positive electrode plate, or each second spike structure is separately machined and then welded on each positive electrode plate.

[0017] In some embodiments, when stamping each first spike structure on each negative electrode plate and each second spike structure on each positive electrode plate, one first spike structure and one second spike structure are stamped on one side of the plate surface, or two first spike structures and two second spike structures stacked together are simultaneously stamped on both sides of the plate surface in the same direction.

[0018] In some embodiments, the plate surface of each negative electrode plate and each positive electrode plate is arranged as a wavy plate surface; each first spike structure and each second spike structure is arranged at the center of the protruding position or the center of the recessed position of the wavy plate surface.

[0019] In some embodiments, at least one liquid flow guide groove is arranged on the plate surface of each negative electrode plate and each positive electrode plate, respectively.

[0020] In some embodiments, the electrostatic precipitation device further comprises at least one set of spray heads arranged on the wall surface of the housing near the insulator of the electrostatic precipitation device for cleaning the insulator.

[0021] In some embodiments, the electrostatic field precipitation device further comprises at least one housing, and a set of negative electrode plates and positive electrode plates are integrated and installed in each of the at least one housing to form an electrostatic field precipitation unit; the electrostatic field precipitation units are fixed and integrated by connecting adjacent housings.

[0022] The present application also provides a plurality of embodiments according to the following aspects, specifically as follows:

[0023] Aspect 1: A manufacturing method of an electrostatic field precipitation device, the manufacturing method comprising:

[0024] manufacturing at least one negative electrode plate for releasing negative charges;

[0025] manufacturing at least one positive electrode plate arranged in parallel alternately with the at least one negative electrode plate for receiving the negative charges released by the at least one negative electrode plate;

[0026] wherein, between each negative electrode plate of the at least one negative electrode plate and each positive electrode plate of the at least one positive electrode plate, an electrostatic precipitation region and a glow plasma region are formed, and the waste gas flows between each negative electrode plate and each positive electrode plate and is alternately purified, wherein the waste gas is corona purified in the electrostatic precipitation region and is ionized in the glow plasma region.

[0027] Aspect 2: The manufacturing method according to aspect 1, wherein at least two first spike structures are installed on each negative electrode plate, and each negative electrode plate releases negative charges through the tips of the at least two first spike structures; the at least two first spike structures are alternately installed on the plate surface on both sides of each negative electrode plate, respectively.

[0028] Aspect 3: The manufacturing method according to aspect 2, wherein each positive electrode plate is installed with at least two second spike structures corresponding to the arrangement of the at least two first spike structures on each negative electrode plate.

[0029] Aspect 4: The manufacturing method according to aspect 3, wherein each first spike structure of the at least two first spike structures and each second spike structure of the at least two second spike structures each comprise at least two discharge tips, wherein the at least two discharge tips comprise four discharge tips arranged in central symmetry, or three discharge tips arranged in a triangular shape.

[0030] Aspect 5: The manufacturing method according to aspect 4, wherein each first prong structure is formed by stamping each negative electrode plate, or each first prong structure is separately machined and then welded on each negative electrode plate; each second prong structure is formed by stamping each positive electrode plate, or each second prong structure is separately machined and then welded on each positive electrode plate.

[0031] Aspect 6: The manufacturing method according to claim 5, wherein when stamping each first prong structure on each negative electrode plate and each second prong structure on each positive electrode plate, one first prong structure and one second prong structure are stamped on one side of the plate face, or two first prong structures and two second prong structures are simultaneously and in the same direction stamped on both sides of the plate face.

[0032] Aspect 7: The manufacturing method according to any one of aspects 1-6, wherein the plate face of each negative electrode plate and each positive electrode plate is set as a wavy plate face; each first prong structure and each second prong structure is set at the center of the convex position or the center of the concave position of the wavy plate face.

[0033] Aspect 8: The manufacturing method according to aspect 7, wherein at least one liquid flow guide channel is set on the plate face of each negative electrode plate and each positive electrode plate, respectively.

[0034] Aspect 9: The manufacturing method according to aspect 8, wherein the electrostatic dust removal device further comprises at least one set of spray heads, which are set on the wall surface of the housing near the insulator of the electrostatic dust removal device, for cleaning the insulator.

[0035] Aspect 10: The manufacturing method according to aspect 9, wherein the electrostatic field dust removal device further comprises at least one housing, and a set of negative electrode plates and positive electrode plates are integrated and installed in each housing of the at least one housing to form an electrostatic field dust removal unit; adjacent each housing is connected and fixed to integrate the electrostatic field dust removal unit.

[0036] Aspect 11: A purification method using the electrostatic field dust removal device manufactured according to any one of aspects 1-10, the purification method comprising:

[0037] passing the exhaust gas to be purified through the electrostatic dust removal area and being purified by corona in the electrostatic dust removal area, wherein the electrostatic dust removal area is formed by releasing negative charges from the tips of the at least two first prong structures on each negative electrode plate to the plate face of the positive electrode plate directly opposite to the tips;

[0038] The waste gas to be purified passes through the static electricity dust removal area and then enters the glow plasma area, the glow plasma area is formed by the negative charge released from the tips of the at least two second spike structures on the positive electrode plate opposite to the plane at the opposite side of the plate surface where the at least two first spike structures on each negative electrode plate are located, and the waste gas is ionized in the glow plasma area to achieve odor removal and bacteriostasis.

[0039] The waste gas to be purified passes through the static electricity dust removal area and then enters the glow plasma area, the glow plasma area is formed by the negative charge released from the tips of the at least two second spike structures on the positive electrode plate opposite to the plane at the opposite side of the plate surface where the at least two first spike structures on each negative electrode plate are located, and the waste gas is ionized in the glow plasma area to achieve odor removal and bacteriostasis.

[0040] In some embodiments, at least two first spike structures are arranged on each negative electrode plate, and each negative electrode plate releases negative charge through the tips of the at least two first spike structures; the at least two first spike structures are alternately arranged on the plate surfaces on both sides of each negative electrode plate, respectively.

[0041] Further, at least two second spike structures are arranged on each positive electrode plate in correspondence with the arrangement of the at least two first spike structures on each negative electrode plate.

[0042] In some embodiments, the tips of the at least two first spike structures on each negative electrode plate release negative charge to the plate surface of the positive electrode plate opposite to the tips.

[0043] Further, the plane at the opposite side of the plate surface where the at least two first spike structures on each negative electrode plate are located releases negative charge to the tips of the at least two second spike structures on the positive electrode plate opposite to the plane.

[0044] In some embodiments, each of the at least two first spike structures and each of the at least two second spike structures comprises at least two discharge tips, wherein the at least two discharge tips comprise four discharge tips arranged in central symmetry, or three discharge tips arranged in a triangular shape.

[0045] In some embodiments, each first spike structure is formed by stamping each negative electrode plate, or each first spike structure is separately processed and then welded on each negative electrode plate; each second spike structure is formed by stamping each positive electrode plate, or each second spike structure is separately processed and then welded on each positive electrode plate.

[0046] In some embodiments, when stamping each first spike structure on each negative electrode plate and each second spike structure on each positive electrode plate, one first spike structure and one second spike structure are stamped on one side of the plate surface, or two first spike structures and two second spike structures stacked together are simultaneously stamped on both sides of the plate surface in the same direction.

[0047] In some embodiments, the plate surface of each negative electrode plate and each positive electrode plate is provided as a wavy plate surface; each first spike structure and each second spike structure is arranged at the center of a convex position or the center of a concave position of the wavy plate surface.

[0048] In some embodiments, at least one liquid flow guide groove is arranged on the plate surface of each negative electrode plate and each positive electrode plate, respectively.

[0049] In some embodiments, the electrostatic dust removal device further comprises at least one set of spray heads arranged on the wall surface of the shell near the insulator of the electrostatic dust removal device for cleaning the insulator.

[0050] In some embodiments, the electrostatic field dust removal device further comprises at least one shell, and a set of negative electrode plates and positive electrode plates are integrated and arranged in each shell to form an electrostatic field dust removal unit; the electrostatic field dust removal units are fixed and integrated by connecting adjacent shells.

[0051] The electrostatic field dust removal device provided by the embodiments of the present application, as well as the manufacturing method and the purification method thereof, have at least one or part of the following advantages:

[0052] (1) The electrostatic dust removal device provided by the embodiments of the present application realizes two negative charge release modes by correspondingly arranging spike structures at different positions on the positive and negative electrode plates, forms an electrostatic dust removal area and a glow plasma area, simultaneously purifies and ionizes the waste gas, enhances the dust removal effect, and also realizes odor removal and bacteriostasis;

[0053] (2) The electrostatic dust removal device provided by the embodiments of the present application can greatly reduce the working current and reduce the power consumption through the staggered arrangement of the positive and negative electrode plates and the discharge of the spike structure tips;

[0054] (3) The electrostatic dust removal device provided by the embodiments of the present application effectively prevents the passivation of the discharge tips during repeated use by arranging multiple discharge tips on the spike structure, thereby prolonging the service life of the spike structure;

[0055] (4) The electrostatic dust removal device provided by the embodiments of the present application is simple to process and reduces manufacturing costs by stamping the spike structure on the positive and negative electrode plates, and also ensures uniform structural stress;

[0056] (5) The electrostatic dust removal device provided by the embodiments of the present application improves the efficiency of waste gas dust removal and purification by arranging the positive and negative electrode plates as wavy plates and appropriately bending the waste gas flow channel to guide the waste gas flow;

[0057] (6) The electrostatic dust removal device provided in the embodiments of the present invention, by setting liquid guiding channels on the positive and negative electrode plates, helps water vapor in the dust removal process to avoid the discharge tip, avoids water vapor accumulation causing discharge arcing and short circuit of the device, and ensures safe operation.

[0058] (7) The electrostatic dust removal device provided in the embodiments of the present invention achieves cleaning and maintenance of positive and negative electrode plates by setting a spray structure in the liquid guide channel.

[0059] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0060] These and / or other aspects and advantages of the present invention will become apparent and readily understood from the following description of preferred embodiments taken in conjunction with the accompanying drawings, in which:

[0061] Figure 1 is a schematic diagram of an electrostatic dust removal device according to an embodiment of the present invention;

[0062] Figure 2 is a schematic diagram of an integrated electrostatic dust removal device according to another embodiment of the present invention;

[0063] Figure 3 is a schematic diagram of the negative electrode plate of the electrostatic dust removal device shown in Figure 1;

[0064] Figure 4 is a schematic diagram of the positive electrode plate of the electrostatic dust removal device shown in Figure 1;

[0065] Figure 5 is a schematic diagram of the negative charge release state of the electrostatic precipitator shown in Figure 1 during discharge.

[0066] Figure 6 is a partially enlarged schematic diagram of Figure 5;

[0067] Figure 7 is a top view of the first spike structure on the negative electrode plate shown in Figure 3;

[0068] Figure 8 is a three-dimensional structural schematic diagram of the first spike structure shown in Figure 7;

[0069] Figures 9A and 9B are schematic diagrams of two layouts of the first spike structure on the negative electrode plate shown in Figure 3;

[0070] Figure 10 is a schematic diagram of the insulator on the shell of the electrostatic dust removal device shown in Figure 1. Detailed Implementation

[0071] The technical solutions of the present application will be further described below with examples and in conjunction with the drawings. In the description, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present application with reference to the drawings is intended to explain the general inventive concept of the present application, and should not be understood as a limitation of the present application.

[0072] Electrostatic precipitation is a method of dust removal. Dust-containing gas molecules are ionized into positive ions and electrons in a strong electric field. The electrons encounter dust particles during their movement to the positive side, causing the dust particles to become negatively charged and to be deposited and collected on the positive side. It is commonly used for the collection and purification of waste gas in industrial production processes such as coal-fired power plants, metallurgy, printing and dyeing, and chemical industry.

[0073] Electrostatic precipitation equipment has many advantages such as high purification efficiency, small resistance loss, high temperature resistance, and large processing capacity. However, the existing electrostatic precipitation equipment has the following problems. On the one hand, the structure is complex, and the requirements for equipment transportation, installation and maintenance are high. On the other hand, the dust removal process has certain selectivity to the composition of the waste gas (such as the type of dust and its corresponding resistance value) and the state of the waste gas (such as the temperature and humidity of the waste gas), and the dust removal effect under different conditions has obvious differences.

[0074] In view of the above problems of the electrostatic precipitation equipment, the embodiments of the present application propose a new type of electrostatic field dust removal device 100, which optimizes the discharge mode of the electrostatic field and simultaneously realizes corona dust removal and purification and plasma ionization bacteria inhibition and odor removal of the waste gas.

[0075] Referring to FIG. 1, the overall structure of the electrostatic field dust removal device 100 is shown. Specifically, at least one negative electrode plate 10 and at least one positive electrode plate 20 are fixedly installed inside the shell 30. The at least one negative electrode plate 10 and the at least one positive electrode plate 20 are arranged alternately and in parallel, the at least one negative electrode plate 10 is used to release negative charges, and the at least one positive electrode plate 20 is used to receive the negative charges released by the at least one negative electrode plate 10. An electrostatic dust removal area and a glow plasma area are formed between each negative electrode plate 11 of the at least one negative electrode plate 10 and each positive electrode plate 21 of the at least one positive electrode plate 20. The waste gas flows between each negative electrode plate 11 and each positive electrode plate 21 and is alternately purified, wherein it is corona purified in the electrostatic dust removal area and ionized in the glow plasma area.

[0076] In one example, as shown in FIG. 1, the electrostatic field dust removal device 100 is also provided with a negative electrode plate positioning tube 31 for fixing the at least one negative electrode plate 10, the negative electrode plate positioning tube 31 penetrates the shell 30 through the positioning holes corresponding to each negative electrode plate 11 and the end face of the shell 30 and fixes the at least one negative electrode plate 10. Similarly, a positive electrode plate positioning tube 32 is provided to fix the at least one positive electrode plate 20.

[0077] In one example, the outer side of the shell 30 of the electrostatic field dust removal device 100 is also provided with an insulator 33 and a high-voltage connector 34. Since the negative electrode plate 11 and the positive electrode plate 21 responsible for discharging to form the electrostatic field are both arranged inside the shell 30 and are both plate-shaped structures, the insulator 33 can be uniformly arranged on the outer side of the shell 30, can be isolated from the electric field and the exhaust gas, and can be hidden through the shell 30, thereby improving the operation stability of the electrostatic field dust removal device 100.

[0078] In one example, referring to FIG. 2, an integrated electrostatic field dust removal device 1000 composed of a plurality of electrostatic field dust removal devices 100 shown in FIG. 1 stacked and combined is shown. Alternatively, the integrated electrostatic field dust removal device 1000 includes at least one shell, and a set of negative electrode plates (including at least one negative electrode plate 10) and positive electrode plates (including at least one positive electrode plate 20) are integrated and installed in each shell 30 of the at least one shell to form an electrostatic field dust removal unit 100', and the integrated electrostatic field dust removal unit 100' is formed by connecting and fixing each shell 30 adjacent to each other to form the integrated electrostatic field dust removal device 1000. As shown in FIG. 2, an integrated electrostatic field dust removal device 1000 with a set of 3x3 arrangement and the same electrode plate installation mode of each electrostatic field dust removal unit 100' is shown. For the integrated electrostatic field dust removal device 1000, the number of electrostatic field dust removal units 100' to be integrated and the arrangement of a plurality of electrostatic field dust removal units 100' are design details and schemes that can be arranged and combined by a person skilled in the art according to the actual use scene, such as exhaust gas displacement, power consumption, site layout, etc. The present example is only an illustrative example, and a person skilled in the art should not understand it as a limitation of the present application.

[0079] In one example, at least one negative electrode plate 10 and at least one positive electrode plate 20 need to be designed in pairs to ensure their discharge paths and form a uniform and stable electrostatic field in the shell 30 of an electrostatic field dust removal device 100. Referring to FIG. 3, the structure of a negative electrode plate 11 is shown, and correspondingly, referring to FIG. 4, the structure of a positive electrode plate 21 is shown. Based on the structures of the positive and negative electrode plates shown in FIGS. 3 and 4, referring to FIG. 5, the discharge paths of a plurality of positive and negative electrode plates arranged in a staggered and parallel manner inside the shell 30 are shown.

[0080] Specifically, in one example, as shown in FIG. 3 and FIG. 5, at least two first pointed structures 111 are arranged on each negative electrode plate 11, and each negative electrode plate 11 releases negative charges through the tips of the at least two first pointed structures 111. Further, as shown in FIG. 5, the at least two first pointed structures 111 are alternately arranged on the plate surface on both sides of each negative electrode plate 11, respectively. Correspondingly, as shown in FIG. 4 and FIG. 5, each positive electrode plate 21 is arranged with at least two second pointed structures 211 corresponding to the arrangement of the at least two first pointed structures 111 on each negative electrode plate 11. Further, as shown in FIG. 5 and the partial enlarged view of FIG. 6, for example, a first pointed structure 111 with a tip pointing upwards is arranged at the rightmost end of the upper plate surface of the first negative electrode plate 11 shown above, and the second pointed structures 211 are arranged in the same position and direction on the upper and lower positive electrode plates 21 adjacent to it. Similarly, other first pointed structures 111 and second pointed structures 211 are arranged in the same way.

[0081] Specifically, in one example, as shown in FIG. 3 and FIG. 4, a plurality of rows and columns of first pointed structures 111 are arranged on each negative electrode plate 11 (and each positive electrode plate 21 is arranged in the same way). Alternatively, each first pointed structure 111 is arranged equally on one negative electrode plate 11, that is, the center distance between each adjacent two first pointed structures 111 in each row is fixedly arranged as a first preset distance, and the center distance between each adjacent two first pointed structures 111 in each column is fixedly arranged as a second preset distance. Of course, those skilled in the art can understand that the first preset distance and the second preset distance can be equal or not equal, and the specific values of the first preset distance and the second preset distance need to be matched and designed according to the actual dust removal requirements, such as waste gas treatment capacity, dust removal site, power consumption requirements, etc. The present example is only an illustrative example, and those skilled in the art should not understand it as a limitation of the present application.

[0082] Further, in one example, considering the comprehensive influence of ambient temperature and humidity and waste gas composition on the electrostatic precipitation process, water vapor is likely to be generated in the waste gas, which poses a serious safety hazard to the electric precipitation device. Alternatively, as shown in FIGS. 3 and 4, at least one liquid flow channel is provided on the surface of each negative electrode plate 11 and each positive electrode plate 21. Specifically, for example, three groups of first liquid flow channels 112 are provided on the surface of the negative electrode plate 11, and three groups of second liquid flow channels 212 are provided on the surface of the positive electrode plate 21. In this way, water vapor in the waste gas can be collected in the first liquid flow channels 112 and the second liquid flow channels 212 and flow downward in the channels to the bottom for collection or treatment. This avoids water vapor remaining on the negative electrode plate 11 or the positive electrode plate 21 causing electric shock and fire, and avoids safety problems such as short circuit and fire during operation of the electrostatic field precipitation device 100. The position, number, and specific structure of the flow channels are only illustrative examples in this example, and those skilled in the art can make appropriate adjustments according to the actual precipitation scene and processing technology, and this example should not be understood as a limitation on the present application.

[0083] Specifically, in one example, in combination with FIGS. 5 and 6, taking one of the negative electrode plates 11 as an example, when the electrostatic field precipitation device 100 is started, two functional areas can be formed in the electrostatic field discharge range thereof, one being the electrostatic precipitation area and the other being the glow plasma area, i.e., the area A shown in FIG. 5 is the electrostatic precipitation area, and the area B is the glow plasma area. This requires corresponding provision of two discharge paths on the same negative electrode plate 11. Therefore, alternatively, the negative electrode plate 11 is first provided with a structure having two layers of surfaces, and then a plurality of first spike structures 111 in the same row or the same column are arranged alternately on the two layers of surfaces of the negative electrode plate 11, with the tips of the first spike structures 111 pointing outward of the surfaces. Similarly, the positive electrode plate 21 and the second spike structures 211 thereon are correspondingly provided. Then, after the above arrangement, as shown in FIGS. 5 and 6, one of the first spike structures 111 on the upper surface 11a of the negative electrode plate 11 discharges upward to the lower surface 21b of the adjacent positive electrode plate 21, forming the area A for ionizing the waste gas and adsorbing impurities or oil smoke particles that need to be purified. At the same time, the first spike structure 111 adjacent thereto is arranged on the lower surface 11b of the negative electrode plate 11, and the upper surface 11a corresponding thereto is a plane, which discharges upward to the same positive electrode plate 21, and the lower surface 21b of the positive electrode plate 21 is provided with the second spike structure 211 thereon to receive the negative charge from the negative electrode plate 11, forming the area B for ionizing purification and forming a glow plasma area, generating a large amount of plasma to form a plasma barrier, physically bombarding the particles that need to be purified, changing the morphology thereof, and increasing the sterilization and odor removal functions.

[0084] The area A and the area B are alternately purified, improving the exhaust gas purification efficiency and optimizing the purification effect. Those skilled in the art can understand that the specific position of the first sharp structure 111 is only an illustrative example, for example, the two first sharp structures 111 adjacent to each other are arranged on the upper plate surface 11a and the lower plate surface 11b as shown in FIGS. 5 and 6, and so on. Of course, every two first sharp structures 111 can be arranged on the upper plate surface 11a, and the next two first sharp structures 111 can be arranged on the lower plate surface 11b, and so on. Therefore, the present example should not be understood as a limitation of the present application.

[0085] Specifically, in one example, as shown in FIG. 5, in order to ensure that the exhaust gas can be fully retained after entering the electrostatic field dust removal device 100 so that the impurities, dust, oil smoke particles and the like in the exhaust gas can be fully ionized and purified, the plate surface of the negative electrode plate 11 and the positive electrode plate 21 is arranged as a wave-shaped plate surface. The arrangement of the wave-shaped plate surface makes the electrostatic field space channel also present a wave-shaped bending channel. The exhaust gas passing through the bending channel can be fully ionized and purified, further improving the electrostatic field purification efficiency.

[0086] Further, in one example, corresponding to the example that the first sharp structure 111 and the second sharp structure 211 are completely and uniformly distributed on the negative electrode plate 11 and the positive electrode plate 21, alternatively, each first sharp structure 111 and each second sharp structure 211 is arranged at the center of the convex position or the center of the concave position of the wave-shaped plate surface. Specifically, as shown in FIGS. 5 and 6, alternatively, the first sharp structure 111 or the second sharp structure 211 located on the upper plate surface is arranged at the center of the convex position of the wave-shaped plate surface of the negative electrode plate 11 or the positive electrode plate 21. Correspondingly, the first sharp structure 111 or the second sharp structure 211 located on the lower plate surface is arranged at the center of the concave position of the wave-shaped plate surface of the negative electrode plate 11 or the positive electrode plate 21.

[0087] In the above example, the design of the wave-shaped plate surface is only an illustrative example. Those skilled in the art can make appropriate design according to the actual dust removal requirements and site conditions, and construct a suitable exhaust gas flow bending channel. The present example should not be a limitation of the present application.

[0088] In one example, referring to FIG. 7, a top view of the first spike structure 111 is shown, including at least two discharge tips for each first spike structure 111 on the negative electrode plate 11. As shown in FIG. 7, the present example provides a total of four discharge tips arranged in a central symmetry, i.e. 111a, 111b, 111c and 111d. That is, each first spike structure 111, although being a single-point discharge, has four spikes as discharge tips, which can improve the service life of the discharge tips. If there is only one spike, the spike can be easily blunted during frequent use, and the blunted spike will lose the discharge function, resulting in local discharge failure on the same negative electrode plate 11, affecting the stability and uniformity of the electrostatic field on the negative electrode plate 11, and further affecting the overall purification efficiency of the electrostatic field dust removal device 100. The positive electrode plate 21 can be arranged correspondingly to the negative electrode plate 11, which will not be described here.

[0089] Further, in one example, the number of discharge tips arranged on the first spike structure 111 or the second spike structure 211 can be adjusted according to actual conditions, such as the above-mentioned example of four, or two, six, etc. arranged in pairs, or three (odd number) discharge tips arranged in a triangle, mainly to ensure stable and uniform discharge.

[0090] Further, referring to FIG. 8, one example of the discharge tip is shown, i.e. each discharge tip presents a triangular structure, one tip of which points to the outside of the plate surface. Of course, those skilled in the art can adjust the manufacturing process to adjust the structure of the discharge tip, such as providing an opening at the tip pointing to the outside, providing multiple bifurcated tips of different heights, etc. The present example is only an illustrative example, and those skilled in the art should not understand it as a limitation of the present application.

[0091] In one example, each first spike structure 111 can be formed by stamping each negative electrode plate 11 or separately processing each first spike structure 111 and then welding it on the corresponding position of the corresponding plate surface of each negative electrode plate 11. The second spike structure 211 can also be manufactured by the above-mentioned methods in the same way as the first spike structure 111, which will not be described here. Alternatively, in the present example, the plate surfaces of the negative electrode plate 11 and the positive electrode plate 21 are first manufactured by an integral stretch forming process, and then the corresponding discharge tips (four spikes for one discharge point) are manufactured by stamping according to the layout of the first spike structure 111 and the second spike structure 211 designed in advance to form the first spike structure 111 and the second spike structure 211.

[0092] In one example, referring to FIG. 9A and FIG. 9B, two layout manners of the first spike structure 111 on the negative electrode plate surface 11 are shown, taking the negative electrode plate surface 11 as an example. In particular, when stamping each first spike structure 111 on each negative electrode plate 11, as shown in FIG. 9A, two first spike structures 111 stacked together can be formed by stamping on both side surfaces at the same time, for example, as shown in FIG. 5 and FIG. 6, that is, one first spike structure 111 is stamped at the same position of the upper plate surface 11a and the lower plate surface 11b respectively, and the centers of the two first spike structures 111 are coaxial and the spike directions are the same. As shown in FIG. 9B, one first spike structure 111 can also be stamped on one side plate surface (for example, the lower plate surface 11b as shown in FIG. 5 and FIG. 6), that is, if one first spike structure 111 is stamped on the lower plate surface 11b, the upper plate surface 11a at this position is a flat surface. Similarly, the same layout design can also be selected on the positive electrode plate 21, which will not be described here.

[0093] In one example, referring to FIG. 10, the specific position of the insulator 33 provided on the electrostatic field dust removal device 100 is shown. It can be seen that the insulator 33 can be actually hidden in a relatively closed space by the shell 30 and isolated from the negative electrode plate 11 and the positive electrode plate 21, and also isolated from the exhaust gas. Therefore, the insulator 33 can be cleaned by installing a spraying device. Alternatively, at least one group of spray heads (not shown) can be provided on the inner wall of the top of the shell 30 close to the insulator 33, for example, close to the upper insulator 33, for spraying and cleaning the insulator 33. Alternatively, the number of spray heads can also be increased at appropriate positions such as the middle and bottom of the shell, and the present example is only an illustrative example, and those skilled in the art should not understand it as a limitation of the present application.

[0094] In one example, referring to Table 1 and Table 2, taking the electric dust removal equipment of 40,000 air volume level as an example, the volume, power, adsorption area and other parameters of the electrostatic field dust removal device 100 of the present application and the existing annular electrostatic field equipment are compared. Compared with the design of the existing annular electrostatic field, the electrostatic field dust removal device 100 can reduce the volume by about 1 / 4 and reduce the power consumption by about 1 / 3 on the basis of achieving the same amount of exhaust gas dust removal. While improving the purification efficiency, the working current is greatly reduced, thereby reducing the energy consumption.

[0095] Table 1 Performance parameter comparison of electrostatic field dust removal device and annular electrostatic field under 40,000 air volume

[0096] Table 2 Comparison of purification efficiency of electrostatic field dust removal device and annular electrostatic field

[0097] The application also provides a plurality of embodiments according to the following aspects, specifically as follows:

[0098] Aspect 1: A manufacturing method of an electrostatic field dust removal device, the manufacturing method comprising:

[0099] manufacturing at least one negative electrode plate for releasing negative charges;

[0100] manufacturing at least one positive electrode plate, which is arranged in parallel with the at least one negative electrode plate alternately, for receiving the negative charges released by the at least one negative electrode plate;

[0101] wherein an electrostatic dust removal area and a glow plasma area are formed between each negative electrode plate of the at least one negative electrode plate and each positive electrode plate of the at least one positive electrode plate, and the waste gas flows between each negative electrode plate and each positive electrode plate and is purified alternately, wherein the waste gas is corona purified in the electrostatic dust removal area and is ionized in the glow plasma area.

[0102] Aspect 2: The manufacturing method according to aspect 1, wherein at least two first spike structures are mounted on each negative electrode plate, and each negative electrode plate releases negative charges through the tips of the at least two first spike structures; and the at least two first spike structures are mounted on the plate surface on both sides of each negative electrode plate alternately.

[0103] Aspect 3: The manufacturing method according to aspect 2, wherein each positive electrode plate is mounted with at least two second spike structures corresponding to the arrangement of the at least two first spike structures on each negative electrode plate.

[0104] Aspect 4: The manufacturing method according to aspect 3, wherein each first spike structure of the at least two first spike structures and each second spike structure of the at least two second spike structures comprise at least two discharge tips, and the at least two discharge tips comprise four discharge tips arranged in central symmetry, or three discharge tips arranged in a triangle.

[0105] Aspect 5: The manufacturing method according to aspect 4, wherein each first spike structure is formed by stamping each negative electrode plate, or each first spike structure is separately processed and then welded on each negative electrode plate; and each second spike structure is formed by stamping each positive electrode plate, or each second spike structure is separately processed and then welded on each positive electrode plate.

[0106] Aspect 6: The manufacturing method according to claim 5, wherein when stamping each first prong structure on each negative electrode plate and each second prong structure on each positive electrode plate, one first prong structure and one second prong structure are stamped on one side plate surface, or two first prong structures and two second prong structures are simultaneously and homodirectionally stamped on two side plate surfaces to be stacked together.

[0107] Aspect 7: The manufacturing method according to any one of aspects 1-6, wherein the plate surface of each negative electrode plate and each positive electrode plate is set as a wavy plate surface; each first prong structure and each second prong structure is set at the center of a convex position or the center of a concave position of the wavy plate surface.

[0108] Aspect 8: The manufacturing method according to aspect 7, wherein at least one liquid flow guide groove is respectively set on the plate surface of each negative electrode plate and each positive electrode plate.

[0109] Aspect 9: The manufacturing method according to aspect 8, wherein the electrostatic dust removal device further comprises at least one set of spray heads, which are set on the wall surface of the housing near the insulator of the electrostatic dust removal device, for cleaning the insulator.

[0110] Aspect 10: The manufacturing method according to aspect 9, wherein the electrostatic field dust removal device further comprises at least one housing, and a set of negative electrode plates and positive electrode plates are integratedly installed in each of the at least one housing to form an electrostatic field dust removal unit; the electrostatic field dust removal units are integrated by connecting and fixing adjacent housings.

[0111] Aspect 11: A purification method using the electrostatic field dust removal device manufactured according to any one of aspects 1-10, the purification method comprising:

[0112] passing the exhaust gas to be purified through the electrostatic dust removal area and being corona purified in the electrostatic dust removal area, wherein the electrostatic dust removal area is formed by the negative electrode plates releasing negative charges from the tips of the at least two first prong structures on each negative electrode plate to the plate surface of the positive electrode plate facing it;

[0113] after passing the exhaust gas to be purified through the electrostatic dust removal area, entering the glow plasma area, which is formed by the negative electrode plates releasing negative charges from the tips of the at least two second prong structures on the positive electrode plate facing the plane at the opposite side plate surface of the plate surface where the at least two first prong structures on each negative electrode plate are located, and the exhaust gas is ionized in the glow plasma area to achieve odor removal and bacteriostasis;

[0114] alternately passing the exhaust gas to be purified through the electrostatic dust removal area and the glow plasma area which are sequentially arranged.

[0115] In some embodiments, at least two first spike structures are arranged on each negative electrode plate, and each negative electrode plate releases negative charges through the tips of the at least two first spike structures; the at least two first spike structures are alternately arranged on the plate surface on both sides of each negative electrode plate, respectively.

[0116] Further, at least two second spike structures are arranged on each positive electrode plate in correspondence with the arrangement of the at least two first spike structures on each negative electrode plate.

[0117] In some embodiments, the tips of the at least two first spike structures on each negative electrode plate release negative charges to the plate surface of the positive electrode plate directly opposite to it, forming an electrostatic dust removal area.

[0118] Further, the plane on the plate surface opposite to the plate surface where the at least two first spike structures on each negative electrode plate are located releases negative charges to the tips of the at least two second spike structures on the positive electrode plate directly opposite to it, forming a glow plasma area.

[0119] In some embodiments, each of the at least two first spike structures and each of the at least two second spike structures comprises at least two discharge tips, wherein the at least two discharge tips comprise four discharge tips arranged in central symmetry, or three discharge tips arranged in a triangle.

[0120] In some embodiments, each first spike structure is formed by stamping each negative electrode plate, or each first spike structure is separately processed and then welded on each negative electrode plate; each second spike structure is formed by stamping each positive electrode plate, or each second spike structure is separately processed and then welded on each positive electrode plate.

[0121] In some embodiments, when stamping each first spike structure on each negative electrode plate and each second spike structure on each positive electrode plate, one first spike structure and one second spike structure are stamped on one side of the plate surface, or two first spike structures and two second spike structures stacked together are simultaneously stamped on both sides of the plate surface in the same direction.

[0122] In some embodiments, the plate surface of each negative electrode plate and each positive electrode plate is arranged in a wavy plate surface; each first spike structure and each second spike structure is arranged at the center of the convex position or the center of the concave position of the wavy plate surface.

[0123] In some embodiments, at least one liquid flow guide channel is arranged on the plate surface of each negative electrode plate and each positive electrode plate, respectively.

[0124] In some embodiments, the electrostatic dust removal device further comprises at least one set of spray heads arranged on the wall surface of the shell near the insulator of the electrostatic dust removal device for cleaning the insulator.

[0125] In some embodiments, the electrostatic field dust removal device further comprises at least one shell, a set of negative electrode plates and positive electrode plates are integrated and installed in each of the at least one shell to form an electrostatic field dust removal unit; and the electrostatic field dust removal units are fixed and integrated by connecting adjacent shells.

[0126] The electrostatic field dust removal device provided by the embodiments of the present application, as well as the manufacturing method and the purification method thereof, have at least one or part of the following advantages:

[0127] (1) The electrostatic dust removal device provided by the embodiments of the present application realizes two negative charge release modes by correspondingly arranging the spike structures at different positions on the positive and negative electrode plates, forms the electrostatic dust removal area and the glow plasma area, simultaneously purifies and ionizes the waste gas, enhances the dust removal effect, and also realizes odor removal and bacteriostasis;

[0128] (2) The electrostatic dust removal device provided by the embodiments of the present application can greatly reduce the working current and reduce the power consumption through the staggered arrangement of the positive and negative electrode plates and the discharge of the spike structure tips;

[0129] (3) The electrostatic dust removal device provided by the embodiments of the present application effectively prevents the passivation of the discharge tips during repeated use by arranging multiple discharge tips on the spike structure, prolonging the service life of the spike structure;

[0130] (4) The electrostatic dust removal device provided by the embodiments of the present application is simple to process and reduces manufacturing costs by stamping the spike structure on the positive and negative electrode plates, and also ensures uniform structural stress;

[0131] (5) The electrostatic dust removal device provided by the embodiments of the present application improves the efficiency of waste gas dust removal and purification by arranging the positive and negative electrode plates as wave-shaped plates and appropriately bending the waste gas flow channel to guide the waste gas flow;

[0132] (6) The electrostatic dust removal device provided by the embodiments of the present application helps to avoid the discharge of water vapor from the discharge tips during the dust removal process by arranging liquid flow guide channels on the positive and negative electrode plates, avoids the accumulation of water vapor causing discharge sparking and resulting in device short circuit, and ensures safe operation;

[0133] (7) The electrostatic dust removal device provided by the embodiments of the present application realizes cleaning and maintenance of the positive and negative electrode plates by arranging a spraying structure in the liquid flow guide channel.

[0134] While some embodiments of the general inventive concept have been shown and described, it is to be understood that changes can be made in embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

Claims

1. An electrostatic field precipitator characterized by comprising: The electrostatic field dust removal device comprises: at least one negative electrode plate for releasing negative charges; at least one positive electrode plate arranged in parallel alternately with the at least one negative electrode plate for receiving the negative charges released by the at least one negative electrode plate; wherein an electrostatic dust removal area and a glow plasma area are formed between each negative electrode plate of the at least one negative electrode plate and each positive electrode plate of the at least one positive electrode plate; waste gas flows between each negative electrode plate and each positive electrode plate and is purified alternately, wherein it is corona purified in the electrostatic dust removal area and ionized in the glow plasma area.

2. The electrostatic field dust removal device according to claim 1, wherein: at least two first spike structures are arranged on each negative electrode plate, and the negative charges are released by the tips of the at least two first spike structures on each negative electrode plate; the at least two first spike structures are arranged alternately on the plate surface on both sides of each negative electrode plate, respectively.

3. The electrostatic field dust removal device according to claim 2, wherein: at least two second spike structures are arranged on each positive electrode plate according to the arrangement of the at least two first spike structures on each negative electrode plate.

4. The electrostatic field dust removal device according to claim 3, wherein: the tips of the at least two first spike structures on each negative electrode plate release negative charges to the plate surface of the positive electrode plate facing it to form an electrostatic dust removal area.

5. The electrostatic field dust removal device according to claim 4, wherein: the plane at the opposite side of the plate surface where the at least two first spike structures on each negative electrode plate are located releases negative charges to the tips of the at least two second spike structures on the positive electrode plate facing it to form a glow plasma area.

6. The electrostatic field dust removal device according to claim 5, wherein: each of the at least two first spike structures and each of the at least two second spike structures comprises at least two discharge tips, wherein the at least two discharge tips comprise four discharge tips arranged in central symmetry, or three discharge tips arranged in a triangle.

7. The electrostatic field dust removal device according to claim 6, wherein: each first spike structure is formed by stamping each negative electrode plate, or each first spike structure is separately processed and then welded on each negative electrode plate; each second spike structure is formed by stamping each positive electrode plate, or each second spike structure is separately processed and then welded on each positive electrode plate.

8. The electrostatic field dust removal device according to claim 7, wherein: when stamping each first spike structure on each negative electrode plate and each second spike structure on each positive electrode plate, one first spike structure and one second spike structure are stamped on one side of the plate surface, or one first spike structure and one second spike structure are stamped on the opposite side of the plate surface. The two first and second sharp structures are formed by stamping the two sides of the plate surface in the same direction.

9. The electrostatic field dust removal device according to any one of claims 1-8, characterized in that, the plate surface of each negative electrode plate and each positive electrode plate is arranged as a wave-shaped plate surface; each first sharp structure and each second sharp structure is arranged at the center of the convex position or the center of the concave position of the wave-shaped plate surface.

10. The electrostatic field dust removal device according to claim 9, characterized in that, at least one liquid flow guide groove is arranged on the plate surface of each negative electrode plate and each positive electrode plate, respectively.

11. The electrostatic field dust removal device according to claim 10, characterized in that, the electrostatic dust removal device further comprises at least one set of spray heads arranged on the wall surface of the housing near the insulator of the electrostatic dust removal device for cleaning the insulator.

12. The electrostatic field dust removal device according to claim 11, characterized in that, the electrostatic field dust removal device further comprises at least one housing, and a set of negative electrode plates and positive electrode plates are integrated and installed in each of the at least one housing to form an electrostatic field dust removal unit; the electrostatic field dust removal units are integrated by connecting and fixing adjacent housings.

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