Smoke pipe purification device

Abstract

The present application relates to the technical field of oil fume treatment equipment, and in particular to a smoke pipe purification device. The smoke pipe purification device is used to purify the smoke in the smoke flow channel; the smoke pipe purification device includes at least two charging mechanisms and a capture mechanism arranged in sequence along the smoke flow direction; at least one charging mechanism includes a first discharge head extending into the smoke flow channel, and at least one charging mechanism includes a second discharge head extending into the smoke flow channel; the first discharge head and the second discharge head are respectively electrically connected to output electrodes of different electrical properties; the capture mechanism is arranged in the smoke flow channel, and the capture mechanism includes a capture plate arranged at an angle to the smoke flow direction. The smoke pipe purification device makes small-sized oil fume and other pollutant particles in the smoke become medium-large particle size particles, so that the medium-large particle size particles collide with and stay on the capture plate before changing the direction of movement, thereby improving the diffusion charging efficiency of the smoke particles and the capture efficiency of the pollutants in the smoke.

Description

Technical Field

[0001] The present application relates to the technical field of oil fume treatment equipment, and in particular to a smoke pipe purification device. Background Art

[0002] In order to purify the oil fume and improve the cleanliness of the smoke emission, an electrostatic oil removal type range hood is used in the prior art. This electrostatic oil removal type range hood sets a gap between the rectifier plate and the front end surface of the dust hood for the oil fume to enter, so that a negative ion generation channel is formed at the gap, and the rectifier plate is connected to the output positive electrode. This electrostatic oil removal scheme has the following disadvantages:

[0003] On the one hand, the suction force of the range hood will affect the diffusion time of negative ions, the area of ​​action of negative ions, and the charging efficiency of smoke;

[0004] On the other hand, the lack of subsequent treatment equipment for charged flue gas causes charged particles to affect the use of the fan. Summary of the invention

[0005] The purpose of the present application is to provide a smoke pipe purification device to solve, to a certain extent, the technical problems of low flue gas charging efficiency and lack of subsequent treatment of charged flue gas in the electrostatic oil removal scheme in the prior art.

[0006] The present application provides a smoke pipe purification device for purifying smoke in a smoke flow passage;

[0007] The smoke pipe purification device comprises at least two charging mechanisms and a capturing mechanism arranged in sequence along the smoke flow direction;

[0008] At least one of the charging mechanisms comprises a first discharge head extending into the flue gas flow passage, and at least one of the charging mechanisms comprises a second discharge head extending into the flue gas flow passage;

[0009] The first discharge head and the second discharge head are electrically connected to output electrodes of different electrical properties respectively;

[0010] The capture mechanism is arranged in the flue gas flow passage, and the capture mechanism comprises a capture plate arranged at an angle with respect to the flue gas flow direction.

[0011] In the above technical solution, further, the projections of the first discharge head and the second discharge head in the direction of the flue gas flow have a component opposite to the direction of the flue gas flow.

[0012] In any of the above technical solutions, further, the projections of the first discharge head and the second discharge head on the flow channel cross section have a radial component along the flow channel cross section and a tangential component along the flow channel cross section.

[0013] In any of the above technical solutions, further, the number of the first discharge heads and the number of the second discharge heads are both multiple, and the multiple first discharge heads and the multiple second discharge heads are arranged at intervals around the flue gas flow channel.

[0014] In any of the above technical solutions, further, the capture mechanism includes a capture module, and the capture module includes a limit column and a plurality of capture plates stacked in sequence and inclined at intervals;

[0015] The limiting posts are arranged through the plurality of the capturing plates to position the plurality of the capturing plates.

[0016] In any of the above technical solutions, further, the material of the capture plate and the material of the limiting column both include conductive materials, and the capture plate is connected to the output electrode through the limiting column to charge the capture plate.

[0017] In any of the above technical solutions, further, the two adjacent capture plates of the capture module carry the same charge or different charges.

[0018] In any of the above technical solutions, further, the capture mechanism includes a plurality of capture modules arranged in sequence and at intervals along the flow direction of the flue gas.

[0019] In any of the above technical solutions, further, the capture plates in each of the capture modules are arranged parallel to each other;

[0020] The angle formed between the capture plates of adjacent capture modules is an obtuse angle.

[0021] In any of the above technical solutions, further, the acute angle formed by the capture plate and the flue gas flow direction is not less than 10°;

[0022] The acute angle formed by the capture plate and the flue gas flow direction is no greater than 80°.

[0023] In any of the above technical solutions, further, the smoke pipe purification device also includes a shell, the smoke flow channel passes through the smoke pipe and the interior of the shell, and the charging mechanism and the capturing mechanism are both arranged in the smoke flow channel of the shell.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] The smoke pipe purification device provided in the present application is used to purify the smoke in the smoke flow passage. The smoke pipe purification device includes at least two charging mechanisms and a capture mechanism arranged at the front end along the smoke flow direction, at least one of the charging mechanisms includes a first discharge head extending into the smoke flow passage, and at least one of the charging mechanisms includes a second discharge head extending into the smoke flow passage, and the first discharge head and the second discharge head are respectively electrically connected to output electrodes of different electrical properties, so that the first discharge head and the second discharge head can respectively charge the smoke in the smoke flow passage with different electrical charges, and make the charged smoke emit toward the inside of the smoke flow passage along the axial direction of the discharge head to form an ion wind, thereby enhancing the diffusion movement of the charged smoke in the smoke flow passage, so as to increase the charging range and charging time.

[0026] The oil smoke and other pollutant particles with different charges in the flue gas attract, collide and condense into medium and large-sized oil smoke and other pollutant particles during the flow of flue gas.

[0027] The capture mechanism is arranged in the flue gas flow channel and is located at the rear end of all charging mechanisms along the flue gas flow direction, so that the condensed medium and large particle size oil smoke and other pollutant particles flow to the capture mechanism. The capture mechanism includes a capture plate arranged at an angle to the flue gas flow direction, and the capture plate is arranged at an angle to the flue gas flow direction. The medium and large particle size particles are used to collide with and stay on the capture plate before changing the direction of movement, thereby efficiently capturing the pollutant particles in the flue gas, especially the medium and large particle size particles.

[0028] In summary, the smoke duct purification device uses at least two charging mechanisms to cause small-sized pollutant particles such as oil smoke in the smoke to diffuse and charge, collide and condense into medium and large-sized particles. The capture device efficiently captures the medium and large-sized particles through the impact capture principle, which not only improves the diffusion charging efficiency of the smoke particles but also improves the capture efficiency of pollutant particles such as oil smoke, thereby preventing the pollutants in the smoke from polluting the inner wall of the smoke duct or the external environment.

[0029] In addition, since the smoke duct purification device is suitable for post-processing the smoke emitted by the range hood, the diffusion and charging time of the smoke will not be shortened due to the suction effect of the range hood, and the ions in the smoke will not have a negative impact on the operation of the range hood after diffusion and charging, and the safety of use is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A schematic diagram of the structure of a smoke pipe purification device provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the structure of the capture mechanism of the smoke pipe purification device provided in an embodiment of the present application.

[0033] Reference numerals:

[0034] 1-smoke pipe purification device; 10-charging mechanism; 100-discharging head; 101-annular base; 11-capturing mechanism; 110-capturing module; 1100-capturing plate; 1101-limiting column. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Embodiment 1

[0039] See also Figure 1 and Figure 2 As shown, the embodiment of the present application provides a smoke pipe purification device 1, which is used to fully diffuse and charge the small-sized pollutant particles (smaller than PM1.0) of the smoke in the smoke flow channel at the smoke pipe stage, so as to condense them into medium-sized and large-sized pollutant particles (larger than PM1.0), and then efficiently capture the medium-sized and large-sized pollutant particles. The hollow arrow indicates the direction of the smoke flow.

[0040] The smoke pipe purification device 1 provided in this embodiment includes a charging mechanism 10 and a capturing mechanism 11 .

[0041] Hereinafter, the above components of the smoke pipe purification device 1 will be described in detail.

[0042] In an optional scheme of this embodiment, the number of charging mechanisms 10 is at least two, all of the charging mechanisms 10 are arranged sequentially along the flow direction of the flue gas, and the capturing mechanism 11 is arranged behind all of the charging mechanisms 10 along the flow direction of the flue gas, so that the flue gas flows sequentially through all of the charging mechanisms 10 and the capturing mechanism 11, and then the flue gas in the flue gas flow duct is first diffused, charged and condensed by the multiple charging mechanisms 10, and then the condensed oil smoke and other pollutant particles are captured by the capturing mechanism 11.

[0043] In this embodiment, at least one charging mechanism 10 includes a first discharge head extending into the flue gas flow channel, and the charging mechanism 10 including the first discharge head is defined as a first charging mechanism.

[0044] At least one charging mechanism 10 includes a second discharge head extending into the flue gas flow passage. Such a charging mechanism 10 including the second discharge head is defined as a second charging mechanism.

[0045] The first discharge head and the second discharge head are electrically connected to output electrodes of different electrical properties, respectively. One of the first discharge head and the second discharge head 100 is positively charged, and the other of the first discharge head and the second discharge head 100 is negatively charged, so that the two discharge heads 100 with different electrical properties charge the flue gas positively and negatively, respectively, so that the pollutant particles such as oil smoke in the flue gas are positively charged and negatively charged, respectively.

[0046] Specifically, for any one of the first discharge head and the second discharge head 100, since it is connected to the high-voltage output electrode and the discharge head 100 extends into the interior of the flue gas flow channel, an electric field is formed around the discharge head 100, which contacts the flue gas in the flue gas flow channel, so it discharges toward the flue gas, so that the flue gas is charged. Under the action of the electric field near the discharge head 100, the charged flue gas particles and pollutant particles are ejected at high speed along the axial direction of the discharge head 100 to form a point impact ion wind, and other flue gas particles are supplied from the vicinity of the discharge head 100 to the vicinity of the discharge head 100 for continued ionization and formation of ion wind.

[0047] By making the pollutant particles emit into the interior of the flue gas flow channel in the form of point-impact ion wind, a secondary flow is formed. On the one hand, in terms of time, the time for the flue gas particles to flow through the charging mechanism 10 is prolonged, thereby increasing the working time of the discharge head 100 for diffuse charging of the flue gas particles. On the other hand, in terms of space, the secondary flow increases the influence range of the ion wind, thereby expanding the coverage range of the discharge head 100 for diffuse charging of the flue gas particles in the flue gas flow channel.

[0048] On this basis, pollutant particles carrying different electrical properties are attracted, inelastically collided and electrically coagulated, thereby aggregating into particles of medium and large sizes, thereby reducing the number of small-diameter pollutants.

[0049] Furthermore, under the influence of the electric field force generated by the discharge head 100, charged medium and large-sized pollutant particles and small-sized pollutant particles are driven in the flue gas flow duct under the action of the electric field force, and the probability and frequency of inelastic collisions will increase, which not only reduces the number of small-sized pollutant particles and increases the number and proportion of medium and large-sized pollutants, but also can further increase the maximum diameter of the aggregated pollutant particles, thereby simplifying the difficulty of capturing pollutant particles such as oil smoke.

[0050] The number of the first charging mechanisms and the number of the second charging mechanisms are both at least one, for example, they can be one, two or more respectively.

[0051] When the number of any one of the first charging mechanism and the second charging mechanism reaches two or more, all the charging mechanisms 10 can be arranged sequentially along the flue gas flow direction in any order. Optionally, the first charging mechanism and the second charging mechanism are arranged alternately, which is beneficial to further increase the collision and aggregation efficiency between particles.

[0052] Optionally, the first charging mechanism and the second charging mechanism both include an annular base 101, which is arranged around the flue gas flow passage, and the discharge head 100 is in the shape of a slender column, with the two ends of the discharge head 100 being a fixed end and a discharge end respectively, and the fixed end of the discharge head 100 is arranged on the annular base 101, and the discharge end of the discharge head 100 forms a pointed end, so that the discharge head 100 performs tip discharge toward the flue gas in the flue gas flow passage.

[0053] It can be understood that the material of the discharge head 100 is a conductive material.

[0054] In an optional solution of this embodiment, the number of the first discharge heads and the number of the second discharge heads are both plural, and the plurality of the first discharge heads and the plurality of the second discharge heads are arranged at intervals around the flue gas flow channel.

[0055] The multiple discharge heads 100 are arranged at intervals along the circumference of the flue gas flow passage, which increases the coverage of the diffusion charging effect of the charging mechanism 10 along the circumference of the flue gas flow passage, thereby increasing the ionization efficiency and diffusion charging efficiency of the flue gas particles in the flue gas flow passage.

[0056] In an optional scheme of this embodiment, the projections of the first discharge head and the second discharge head on the flue gas flow direction have a component opposite to the flue gas flow direction, that is, a first angle is formed between the axis of the discharge head 100 and the opposite direction of the flue gas flow direction, and the first angle is an acute angle, so that the direction of the discharge head 100 is perpendicular to or opposite to the flue gas flow direction of the flue gas flow channel, so that the emission direction of the ion wind is different from or even opposite to the flue gas flow direction, thereby extending the time required for the flue gas to flow through the charging mechanism 10, thereby further extending the diffusion charging time of pollutant particles such as oil smoke.

[0057] Optionally, there is no limitation on the direction of the discharge head 100 along the circumferential direction of the flue gas flow channel, and the effect of extending the diffusion charging time can be achieved as long as it is tilted in the opposite direction of the flue gas flow direction.

[0058] In this embodiment, the flow channel cross section refers to the cross section of the flue gas flow channel at one end where the discharge head 100 is connected to the flue gas flow channel, the radial direction of the flow channel cross section refers to the line between the centroid of the flow channel cross section and the fixed end of the discharge head 100, and the tangent direction of the flow channel cross section refers to the tangent of the flow channel cross section at the fixed end of the discharge head 100.

[0059] Based on the above definition, the projection of the discharge head 100 on the flow channel section has a radial component along the flow channel section and a tangential component along the flow channel section, so that when observing toward the flow channel section, the direction of the discharge head 100 can take into account both the edge and the center of the flow channel section.

[0060] This makes the ionization and electric field coverage of the discharge head 100 and the emission path of the ion wind evenly distributed in the flow channel cross section, ensuring that the diffusion charging action range of the charging mechanism 10 covers the entire flow channel cross section instead of only covering a part.

[0061] Optionally, the projection of the axis of the discharge head 100 on the flow channel cross section forms a second angle with the radial direction of the flow channel cross section, and the second angle is not less than 25°, so that the ionization range of the discharge head 100 and the component of the ion wind emission path in the radial direction of the flow channel cross section will not be too large, and the component of the tangent to the flow channel cross section will not be too small. Similarly, when the second angle is not greater than 75°, the ionization range of the discharge head 100 and the component of the ion wind emission path in the radial direction of the flow channel cross section will not be too small, and the component of the tangent to the flow channel cross section will not be too large, so that the ionization coverage range of the discharge head 100 and the ion wind emission path are evenly distributed in the flow channel cross section, ensuring that the diffusion charging action range of the charging mechanism 10 covers the entire flow channel cross section, rather than only covering a part.

[0062] When the projections of the multiple discharge heads 100 in the flow channel cross section are tilted unidirectionally, that is, when the multiple discharge heads 100 are tilted clockwise or counterclockwise along the flow channel cross section, the multiple discharge heads 100 are in a unidirectional spiral shape, and then the multiple beams of ion wind emitted by the charging mechanism 10 are in a spiral shape as a whole and point to the center of the flue gas flow channel.

[0063] In an optional scheme of this embodiment, the capture mechanism 11 is arranged in the flue gas flow duct, and the capture mechanism 11 includes a capture plate 1100 arranged at an angle to the flue gas flow direction. The capture plate 1100 is arranged at an angle to the flue gas flow direction of the flue gas flow duct, that is, the capture plate 1100 is not parallel to the flue gas flow direction. Pollutant particles such as oil smoke, especially particles with medium and large particle sizes, have a large mass and inertia, and are easy to directly collide with the capture plate 1100 that is at an angle to the flue gas flow direction. After colliding with the capture plate 1100, the pollutant particles such as oil smoke can directly adhere to the surface of the capture plate 1100 due to their own high viscosity, thereby completing the efficient capture of pollutant particles such as oil smoke.

[0064] The capture plate 1100 may be powered or unpowered, wherein when the capture plate 1100 is unpowered, the oil smoke and other pollutant particles are captured by collision and adhesion between the oil smoke and other pollutant particles and the capture plate 1100. The case where the capture plate 1100 is powered is described in detail below.

[0065] In an optional scheme of this embodiment, the capture mechanism 11 includes a capture module 110, and the capture module 110 includes a limiting column 1101 and a plurality of capture plates 1100 stacked in sequence and inclined at intervals. In other words, the capture module 1 includes two, three or more capture plates 1100 arranged at intervals, and a capture channel is formed between each two adjacent capture plates 1100, so that the flue gas carrying medium and large particle size pollutant particles can enter the capture channel through the flue gas flow duct.

[0066] The limiting posts 1101 penetrate through the plurality of the capturing plates 1100 to position the plurality of the capturing plates 1100 , thereby simplifying the structure for connecting and positioning the plurality of capturing plates 1100 and not affecting the flow area of ​​the capturing channel.

[0067] In addition, the capture device of the prior art is a case where the space between the electrode plates is narrow and deep, and is often washed with a high-pressure water gun. However, due to angle restrictions during washing, it is often not cleaned thoroughly. Alternatively, a stick-shaped long-bristled brush (similar to a small feather duster) is inserted between the plates for side pressure sliding and brushing, which is laborious and time-consuming to clean, and the effect is not good.

[0068] The capture module of the capture device sets the capture plate 1100 at a certain angle to the smoke flow direction of the smoke flow channel, and is tilted relative to the placement plane. The setting angle matches the flushing angle, so it is easier to contact the surface of the capture plate 1100 that needs to be cleaned by flushing with water or brushing, which is convenient for cleaning. In addition, the restrictions on the brush are reduced, and only a brush is needed. There is no restriction on the shape of the cleaning tool, and there is no restriction on the way the cleaning tool is used. For example, the restrictions on the water flushing angle are also reduced.

[0069] In addition, due to the high capture efficiency of the capture module, the length of the capture module along the flue gas flow direction can be shortened accordingly, so that the cleaning depth of the capture module is shortened, and the convenience and cleanliness of cleaning are improved.

[0070] Optionally, the plurality of capture plates 1100 of the capture module 110 are arranged parallel to each other.

[0071] Optionally, to facilitate flushing and scrubbing, the capture plate 1100 is coated with an oil and water transfer layer.

[0072] In an optional solution of this embodiment, the material of the capture plate 1100 and the material of the limiting column 1101 both include conductive materials, and the capture plate 1100 is connected to the output electrode through the limiting column 1101 to charge the capture plate 1100. The output electrode can be a high-voltage positive electrode, a high-voltage negative electrode or a ground electrode.

[0073] Optionally, the conductive material may include a conductive metal or a conductive composite material, the conductive metal being, for example, iron, nickel, tungsten, aluminum or other conductive alloys, and the conductive composite material being, for example, conductive plastic, conductive rubber, conductive coating, conductive fiber, conductive adhesive or conductive ink.

[0074] In an optional solution of this embodiment, two adjacent capture plates 1100 of the capture module 110 carry the same charge or different charges.

[0075] When two capture plates 1100 carry the same charge, the charge density of the two capture plates 1100 can be the same or different. In the case where the charge density of adjacent capture plates 1100 is the same, under the action of the electric field of the capture plates 1100 themselves, pollutant particles such as oil smoke with different charges move toward the capture plates 1100, thereby achieving the adsorption and capture of pollutant particles and improving the capture efficiency of pollutant particles.

[0076] When the charge densities of adjacent capture plates 1100 are different, a capture electric field pointing toward the capture plate 1100 with a lower electric potential is formed between the adjacent capture plates 1100, so that pollutant particles such as oil smoke move toward one of the capture plates 1100 under the action of the capture electric field, thereby improving the capture efficiency of pollutant particles such as oil smoke.

[0077] When two capture plates 1100 carry different charges, the two adjacent capture plates 1100 are respectively charged positively and negatively, or respectively charged positively and grounded, or charged negatively and grounded. Thus, a capture electric field pointing to the capture plate 1100 with lower potential is formed between the two capture plates 1100, thereby improving the capture efficiency of pollutant particles such as oil smoke.

[0078] Optionally, the charges of all the capture plates 1100 are the same or alternately changed. When the charges of the capture plates 1100 alternately change, the number of the limiting posts 1101 is at least two, wherein at least two of the limiting posts 1101 are connected to output electrodes of different polarities.

[0079] In an optional solution of this embodiment, the capture mechanism 11 includes a plurality of capture modules 110 arranged in sequence and at intervals along the flow direction of the flue gas, so that multiple capture of pollutant particles such as oil smoke in the flue gas is achieved through multiple capture modules, thereby improving the purification efficiency of oil smoke.

[0080] In an optional scheme of this embodiment, the angle A formed between the capture plates 1100 of adjacent capture modules 110 is greater than 90°, and the angle A formed between the capture plates 1100 of adjacent capture modules 110 is less than 180°. For example, the angle A between the capture plates 1100 of adjacent capture modules is 95°, 100°, 120°, 135°, 160°, etc.

[0081] As a result, the capture plates 1100 of adjacent capture modules are at opposite angles. When the oil smoke and other pollutant particles enter the latter capture module from the former capture module, the angle between the two exceeds the turning angle of the small-size oil smoke pollutant particles, so the impact effect is better, and impact-type capture is performed to achieve the capture and purification of pollutant particles of all particle sizes.

[0082] In an optional solution of this embodiment, the acute angle formed by the capture plate 1100 and the flue gas flow direction is not less than 10° and not more than 80°. For example, the acute angle formed by the capture plate 1100 and the flue gas flow direction is 10°, 30°, 45°, 60° or 80°.

[0083] Specifically, the acute angle B formed by the capture plate 1100 and the negative direction of the flue gas flow is not less than 10° or the acute angle C formed by the capture plate 1100 and the positive direction of the flue gas flow is not greater than 80°, so that the inclination angle of the capture plate 1100 is large enough to make the turning angle of pollutant particles such as oil smoke smaller than the acute angle B or the acute angle C, and the probability of particles colliding with the capture plate 1100 is increased.

[0084] The acute angle formed by the capture plate 1100 and the negative direction of the flue gas flow direction is not greater than 80°, or the acute angle formed by the capture plate 1100 and the positive direction of the flue gas flow direction is not greater than 80°, thereby avoiding excessive inclination of the capture plate 1100, reducing wind resistance, and preventing the flue gas from being unable to smoothly flow into or out of the capture channel due to excessive wind resistance.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments instead of other features, the combination of features of different embodiments means that they are within the scope of the present invention and form different embodiments. For example, any one of the embodiments claimed for protection can be used in any combination. The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. A smoke pipe purification device, characterized in that: Used to purify the flue gas in the flue gas flow duct; The smoke pipe purification device comprises at least two charging mechanisms and a capturing mechanism arranged in sequence along the smoke flow direction; At least one of the charging mechanisms comprises a first discharge head extending into the flue gas flow passage to form a first charging mechanism; at least one of the charging mechanisms comprises a second discharge head extending into the flue gas flow passage to form a second charging mechanism; The first discharge head and the second discharge head are respectively electrically connected to output electrodes of different electrical properties, so that the first charging mechanism and the second charging mechanism carry different electrical charges; The capture mechanism is arranged in the flue gas flow passage, and the capture mechanism comprises a capture plate arranged at an angle with respect to the flue gas flow direction.

2. The smoke pipe purification device according to claim 1, characterized in that: Projections of the first discharge head and the second discharge head in the flue gas flow direction have a component opposite to the flue gas flow direction.

3. The smoke pipe purification device according to claim 2, characterized in that: Projections of the first discharge head and the second discharge head on the flow channel cross section have a radial component along the flow channel cross section and a tangential component along the flow channel cross section.

4. The smoke pipe purification device according to claim 1, characterized in that: The number of the first discharge heads and the number of the second discharge heads are both plural, and the plurality of the first discharge heads and the plurality of the second discharge heads are arranged at intervals around the flue gas flow channel.

5. The smoke pipe purification device according to claim 1, characterized in that: The capture mechanism comprises a capture module, and the capture module comprises a limiting column and a plurality of capture plates stacked in sequence and inclined at intervals; The limiting posts are arranged through the plurality of the capturing plates to position the plurality of the capturing plates.

6. The smoke pipe purification device according to claim 5, characterized in that: The material of the capture plate and the material of the limiting column both include conductive materials, and the capture plate is connected to the output electrode through the limiting column so that the capture plate is charged.

7. The smoke pipe purification device according to claim 6, characterized in that: The two adjacent capture plates of the capture module carry the same charge or different charges.

8. The smoke pipe purification device according to claim 7, characterized in that: The capture mechanism includes a plurality of capture modules which are sequentially arranged at intervals along the flow direction of the flue gas.

9. The smoke pipe purification device according to claim 8, characterized in that: The capture plates in each capture module are arranged parallel to each other; The angle formed between the capture plates of adjacent capture modules is an obtuse angle.

10. The smoke pipe purification device according to claim 9, characterized in that: The acute angle formed between the capture plate and the flue gas flow direction is not less than 10°; The acute angle formed by the capture plate and the flue gas flow direction is no greater than 80°.

11. The smoke pipe purification device according to claim 1, characterized in that: It also includes a shell, the flue gas flow passage passes through the smoke pipe and the interior of the shell, and the charging mechanism and the capturing mechanism are both arranged in the flue gas flow passage of the shell.

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