Smoke pipe purification equipment

Abstract

The present application relates to the technical field of flue gas treatment equipment, and particularly to a flue pipe purification equipment. The flue pipe purification equipment includes a charge coagulation mechanism and a collection mechanism; the charge coagulation mechanism includes a plurality of charge flow-through plates arranged at intervals in sequence along the flue gas flow direction, the charge flow-through plates are provided with a plurality of flow-through holes with gradually changing flow-through cross-sections, and each flow-through hole has at least one adjacent flow-through hole with a different gradient rule, so as to form a flue gas flow velocity gradient at the outlets of the plurality of flow-through holes; the charge flow-through plates have conductivity, and at least two charge flow-through plates are used for electrically connecting with output electrodes of different polarities; the collection mechanism is arranged behind the charge coagulation mechanism, and the collection module of the collection mechanism includes a collection plate arranged at an angle to the flue gas flow direction. The flue pipe purification equipment enables small-sized pollutant particles in the flue gas to be charged and coagulated into medium and large-sized particulate matters, improves the proportion of pollutants hitting the collection plate, and thus efficiently collects pollutants such as lampblack.

Description

Technical Field

[0001] This application relates to the technical field of flue gas treatment equipment, and particularly to a flue pipe purification device. Background Art

[0002] In order to improve the cleanliness of the kitchen, cooking fumes generated during the cooking process are usually sucked by a range hood and discharged outward through a flue pipe. However, the cooking fumes of household range hoods in old communities are usually directly discharged outward without purification treatment, which is the main source of pollution to the external environment.

[0003] In view of this problem of flue gas pollution, an electrostatic oil removal range hood has been proposed at present. The electrostatic treatment component of the flue gas is arranged at the air suction port of the range hood, resulting in a great influence of the suction of the range hood on the charge efficiency of the flue gas, thus leading to a low flue gas purification efficiency. In addition, the pollutants separated from the flue gas have a negative impact on the fan of the range hood, resulting in damage to the performance and service life of the fan. Summary of the Invention

[0004] The purpose of this application is to provide a flue pipe purification device to solve, to a certain extent, the technical problem of low treatment efficiency of pollutants such as cooking fumes in the prior art.

[0005] This application provides a flue pipe purification device, including a charge coagulation mechanism and a collection mechanism;

[0006] The charge coagulation mechanism includes a plurality of charge flow-through plates arranged at intervals in sequence along the flue gas flow direction. The charge flow-through plates are provided with a plurality of through holes with gradually changing through-flow cross-sections along the flue gas flow direction. Each through hole has at least one adjacent through hole with a different gradually changing rule of the through-flow cross-section, so as to form a flue gas flow velocity gradient at the outlet of the plurality of through holes;

[0007] The charge flow-through plate has conductivity, and at least two of the charge flow-through plates of the charge coagulation mechanism are used for electrically connecting with output electrodes of different polarities;

[0008] The collection mechanism is arranged behind the charge coagulation mechanism along the flue gas flow direction. The collection mechanism includes a collection module, and the collection module includes a collection plate arranged at an angle to the flue gas flow direction.

[0009] In the above technical solution, further, the plurality of through holes are arranged in a multi-row and multi-column array on the charge flow-through plate, and each through hole is provided with at least one adjacent through hole with a gradually changing through-flow cross-section in the opposite direction.

[0010] In any of the above technical solutions, further, any two adjacent through holes in the same column have through-flow cross-sections with gradually changing directions in opposite directions;

[0011] And / or, any two adjacent ones of the through-flow holes located in the same row have through-flow cross-sections with opposite gradual change directions.

[0012] In any of the above technical solutions, further, the cross-section of the through-flow hole is square, and the thickness of the hole wall between any two adjacent through-flow holes is less than 1 mm.

[0013] In any of the above technical solutions, further, the distance between adjacent charged through-flow plates is greater than 5 mm.

[0014] In any of the above technical solutions, further, the collection module includes a limiting post and a plurality of collection plates that are sequentially and obliquely stacked at intervals;

[0015] The limiting post penetrates through the plurality of collection plates to position the plurality of collection plates.

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

[0017] Two adjacent collection plates of the collection module carry the same kind of charge or different kinds of charges.

[0018] In any of the above technical solutions, further, in the case where two adjacent collection plates of the collection module carry different kinds of charges, all the limiting posts include a first limiting post and a second limiting post;

[0019] Every two adjacent collection plates are respectively electrically connected to output electrodes with different electricities through the first limiting post and the second limiting post.

[0020] In any of the above technical solutions, further, the collection mechanism includes a plurality of collection modules arranged side by side at intervals along the flue gas flow direction.

[0021] In any of the above technical solutions, further, the collection plates in each collection module are arranged parallel to each other;

[0022] The included angle formed between the collection plates of adjacent collection modules is an obtuse angle;

[0023] The acute angle formed by the collection plate and the flue gas flow direction is not less than 10° and not greater than 80°.

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

[0025] The flue gas purification equipment provided by this application includes a charge coagulation mechanism and a collection mechanism. The charge coagulation mechanism includes a plurality of charge flow-through plates arranged at intervals in sequence along the flue gas flow direction. The charge flow-through plates are provided with a plurality of flow-through holes, so that the flue gas sequentially passes through the flow-through holes of the plurality of charge flow-through plates along the flue gas flow direction. The flow-through cross-section of the flow-through holes gradually changes along the flue gas flow direction, so that the flow velocity of the flue gas changes in the flow-through holes. Each flow-through hole has at least one adjacent flow-through hole with a different law of gradual change of the flow-through cross-section, so that the change amount of the flow velocity of the flue gas in these two flow-through holes is different, resulting in a flue gas flow velocity gradient at the outlets of the plurality of flow-through holes, thereby generating turbulent vortices and increasing the probability of diffusion and collision between pollutant particles.

[0026] Among them, the charge flow-through plate has conductivity, and at least two charge coagulation mechanisms of the charge coagulation mechanism are used to be electrically connected to output electrodes with different electricities. That is to say, at least one charge flow-through plate is positively charged. After the flue gas passes through its flow-through hole, the flue gas particles are overall positively charged and undergo diffusion charging. At least one charge flow-through plate is negatively charged, so that the flue gas particles are charged with opposite charges during the process of passing through its flow-through hole and coagulate, especially making small-particle pollutants aggregate into large-particle pollutants. In addition, since turbulent vortices can be formed on the rear side wall of the charge flow-through plate by the flue gas, the collision between charged pollutant particles can be intensified, and the proportion of medium and large particle size particles in the flue gas can be increased.

[0027] Pollutant particles such as oil fume, especially particles with medium and large particle sizes, have large mass and inertia and are easy to directly impact on the collection plate at an angle to the flue gas flow direction. After impacting on the collection plate, the pollutant particles such as oil fume can directly adhere to the surface of the collection plate due to their high viscosity.

[0028] In summary, in this flue gas purification equipment, at least two charge flow-through plates with opposite charges cause the flue gas particles, especially the small-particle pollutants in the flue gas, to be charged and coagulated into medium and large particle size particles, increasing the proportion of large particle size particles hitting the collection plate. In addition, the charged small-particle pollutants also have high viscosity, so that the charged small-particle pollutants can also impact and stay on the collection plate, thereby completing the efficient collection of pollutant particles such as oil fume. Description of the Drawings

[0029] In order to more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1Schematic structural diagram of the flue pipe purification device provided by the embodiment of the present application;

[0031] Figure 2 Schematic structural diagram of the charge coagulation mechanism of the flue pipe purification device provided by the embodiment of the present application;

[0032] Figure 3 First schematic structural diagram of the charge current-carrying plate of the charge coagulation mechanism of the flue pipe purification device provided by the embodiment of the present application;

[0033] Figure 4 Second schematic structural diagram of the charge current-carrying plate of the charge coagulation mechanism of the flue pipe purification device provided by the embodiment of the present application;

[0034] Figure 5 Schematic structural diagram of the collection device of the flue pipe purification device provided by the embodiment of the present application.

[0035] Reference numerals:

[0036] 1 - Flue pipe purification device; 10 - Charge coagulation mechanism; 100 - Charge current-carrying plate; 1001 - First current-carrying hole; 1002 - Second current-carrying hole; 1003 - Hole wall; 11 - Collection mechanism; 110 - Collection module; 1100 - Collection plate; 1101 - Limit post. Detailed implementation manners

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Embodiment 1

[0041] Referring to Figures 1 to 5 As shown, in which the flow direction of the flue gas is shown by a hollow arrow. An embodiment of the present application provides a flue gas purification device 1 for purifying flue gas at the flue gas pipe stage. The flue gas purification device 1 can be arranged at the front end, the rear end or the middle of the flue gas pipe. As long as the flue gas can pass through the flue gas purification device 1 at the flue gas pipe stage, the flue gas can be purified, the pollutant particles in the flue gas can be collected, and the direct discharge of the flue gas to the external environment can be avoided.

[0042] In an alternative embodiment of the present embodiment, such as Figures 2 to 4 A plurality of through holes are formed in the charged current-carrying plate 100, and the plurality of through holes all have a through-flow cross-section that gradually changes along the flow direction of the flue gas, that is, it gradually expands or contracts along the flow direction of the flue gas, so that the flow velocity of the flue gas changes inside the through holes. Among them, the through holes penetrate the charged current-carrying plate 100 along the thickness direction of the charged current-carrying plate 100. That is, when observing along the flow direction of the flue gas, the inlet of the through hole penetrates the front side wall of the charged current-carrying plate 100, and the outlet of the through hole penetrates the rear side wall of the charged current-carrying plate 100.

[0043] Each through hole has at least one adjacent through hole with a different law of gradual change of the through-flow cross-section. Specifically, the through-flow cross-sections of these two adjacent through holes both gradually expand or contract along the flow direction of the flue gas, and the amplitude of the gradual expansion or contraction is different, or the through-flow cross-sections of these two adjacent through holes gradually expand or contract along the flow direction of the flue gas respectively. Since the laws of gradual change of the through-flow cross-sections of these two through holes are different, the degree of change in the flow velocity of the flue gas inside these two through holes is different, and a flue gas flow velocity difference will be formed at the outlets of the two through holes.

[0044] That is to say, at least one local wind speed gradient will be generated after the flue gas passes through all the through holes, forming a turbulent flow. When there are multiple local wind speed gradients, the multiple local wind speed gradients will generate turbulent vortices due to mutual influence. Thus, the flue gas passing through the through holes is stirred and squeezed, intensifying the collision of the pollutant particles in the flue gas. The pollutant particles in the flue gas will undergo more friction and collision, increasing the probability of inelastic collision between the pollutant particles.

[0045] Optionally, the through-flow cross-section of the through hole can be circular or polygonal.

[0046] Further, the flow-through cross-section of the flow-through hole can be square, so that the overall shape of the flow-through hole is a frustum of a pyramid, which is convenient for the hole opening processing of the charged flow-through plate 100 and also convenient for users to flush and clean the inner wall of the flow-through hole, whether it is flushing with water or brushing with a brush.

[0047] Optionally, a hole wall 1003 is formed between two adjacent flow-through holes of the charged flow-through plate 100, and the thickness of the hole wall 1003 is less than 1 mm, which improves the utilization rate and flow-through efficiency of the charged flow-through plate 100.

[0048] Optionally, the charged flow-through plate 100 is arranged perpendicular to the flue gas flow direction.

[0049] Optionally, some of the flow-through holes in all the flow-through holes are first flow-through holes 1001, and the flow-through cross-section of the first flow-through holes 1001 is tapered along the flue gas flow direction. Another part of the flow-through holes in all the flow-through holes are second flow-through holes 1002, and the flow-through cross-section of the second flow-through holes 1002 is gradually expanding along the flue gas flow direction.

[0050] Among them, when the flue gas passes through the first flow-through hole 1001, during the process of the flue gas flowing from the air inlet of the first flow-through hole 1001 to the air outlet, as the flow-through cross-section gradually decreases, the wind speed of the flue gas will gradually increase.

[0051] When the flue gas passes through the second flow-through hole 1002, during the process of the flue gas flowing from the air inlet of the second flow-through hole 1002 to the air outlet, as the flow-through cross-section gradually increases, the wind speed of the flue gas will gradually decrease. This way of differentiating the setting of the flow-through cross-section is beneficial to enlarging the wind speed gradient, thereby further increasing the collision probability.

[0052] In this embodiment, the charged coagulation mechanism 10 includes a plurality of charged flow-through plates 100. The plurality of charged flow-through plates 100 are arranged side by side at intervals along the oil fume flow direction. The charged flow-through plates 100 have conductivity, and at least two charged flow-through plates 100 of the charged coagulation mechanism 10 are used for electrically connecting to output electrodes of different polarities. That is to say, these two charged flow-through plates 100 are respectively connected to positive high voltage and negative high voltage.

[0053] In this case, the one of the two charged flow-through plates 100 that is located in the front along the flue gas flow direction is used to charge the flue gas particles. Among them, on the one hand, when the flue gas passes through the flow-through holes of the charged flow-through plate 100, due to the decrease in the flow-through cross-sectional area, the aerosol density of the flue gas instantaneously rises, and the distance between the pollutant particles in the flue gas decreases, resulting in a large amount of friction and collision between the pollutant particles, generating the phenomena of triboelectrification and collision ionization.

[0054] On the other hand, since the charged coagulation mechanism 10 is charged, an electric field is formed. When the flue gas particles pass through the electric field, the electric field energy will be injected into the molecules or molecular clusters of the pollutant particles, causing the speed of the extranuclear electrons of the constituent atoms to increase and the kinetic energy to increase. When the kinetic energy exceeds the chemical bond energy within the molecule, the chemical bond breaks, and the pollutant particles are ionized into charged particles.

[0055] One of the two charged current-carrying plates 100 located at the rear along the flue gas flow direction is used to charge and coagulate the flue gas particles. Among them, referring to the above principle, it can be understood that, on the one hand, during the process of the pollutant particles passing through the charged current-carrying plate 100 located at the rear, they will become particles with opposite electric charges due to the extrusion of the through-holes and the electric field effect. Under the extrusion of the through-holes and the electric field effect, and when the charged pollutant particles pass through the charged current-carrying plate 100, the inelastic collision is increased under the turbulent flow effect generated by the wind speed gradient, so that the charged pollutant particles coagulate, making the small-sized pollutant particles in the flue gas charged and coagulated into medium- and large-sized flue gas pollution particles. The proportion of medium- and large-sized flue gas pollution particles increases, which is very convenient for the collection mechanism 11 to collect and improves the flue gas purification effect.

[0056] It can be understood that the number of charged current-carrying plates 100 can be, for example, two, three, four or more. When all the charged current-carrying plates 100 are set such that any two adjacent charged current-carrying plates 100 are electrically connected to the output electrodes with opposite electric charges respectively, taking the number of charged current-carrying plates 100 as four as an example, it can be made that during the flow of the flue gas, during the process of passing through the first charged current-carrying plate 100, the small-sized pollutant particles are charged, and after flowing out of the first charged current-carrying plate 100, they undergo diffusion charging due to turbulent flow, and then during the process of passing through the second charged current-carrying plate 100, the charged small-sized pollutant particles undergo opposite electric charge charging and coagulation, and some small-sized pollutant particles coagulate into medium- and large-sized pollutant particles. After flowing out of the second charged current-carrying plate 100, they undergo diffusion charging and coagulation due to turbulent flow, and then during the process of passing through the third charged current-carrying plate 100 and flowing out of it, the charging ratio of the small-sized pollutant particles and the medium- and large-sized pollutant particles in the flue gas is enhanced. At the same time, the small-sized charged particulate matter that did not coagulate in the second charged current-carrying plate 100 will coagulate. During the process of passing through the fourth charged current-carrying plate 100, the small-sized pollutant particles and the medium- and large-sized pollutant particles undergo opposite electric charge charging and coagulation, becoming medium- and large-sized pollutant particles and even larger-sized pollutant particles.

[0057] That is to say, the number of charged current-carrying plates 100 can be selected specifically according to the oil fume purification requirements. In principle, the more the number of charged current-carrying plates 100, the better the coagulation effect of the pollutant particles.

[0058] Optionally, the material of the charged current-carrying plate 100 is a conductive material, or the surface of the charged current-carrying plate 100 is coated with a conductive material layer, so that the charged current-carrying plate 100 has conductivity.

[0059] Optionally, an electrode connection device is provided on the charged current-carrying plate 100, so that the charged current-carrying plate 100 can be electrically connected to the output electrode, such as connecting the charged current-carrying plate 100 to a positive high voltage or a negative high voltage.

[0060] It can be understood that if the charged current-carrying plate 100 is only used for auxiliary agglomeration, the charged current-carrying plate 100 can be grounded or made of a non-conductive material.

[0061] In this embodiment, the distance between any two adjacent charged current-carrying plates 100 is greater than 5 mm, so as to assist in agglomerating the small-sized charged particles in the oil fume through multiple charged current-carrying plates 100, increasing the number of medium and large-sized oil fume pollution particles in the oil fume, facilitating collection by the collection device, and improving the oil fume purification.

[0062] In this embodiment, multiple through-holes are arranged in a multi-row and multi-column array on the charged current-carrying plate 100, and each through-hole is provided with at least one adjacent through-hole with a gradually changing flow cross-section in the opposite direction, so as to expand the turbulent vortex formed by the wind speed gradient to the entire rear side wall of the charged current-carrying plate 100.

[0063] Specifically, any two adjacent through-holes in the same column have flow cross-sections with gradually changing directions in opposite directions. Optionally, the first through-hole 1001 and the second through-hole 1002 are alternately distributed in the same column.

[0064] Any two adjacent through-holes in the same row have flow cross-sections with gradually changing directions in opposite directions. Optionally, the first through-hole 1001 and the second through-hole 1002 are alternately distributed in the same column.

[0065] In an alternative solution of this embodiment, as shown in Figure 1 The collection mechanism 11 includes a collection plate 1100 arranged at an angle to the smoke flow direction. The collection plate 1100 is arranged at an angle to the smoke flow direction in the smoke passage, that is to say, the collection plate 1100 is not parallel to the smoke flow direction. Pollutant particles such as oil fume, especially medium and large-sized pollutant particles, have a large mass and inertia and are likely to directly impact on the collection plate 1100 arranged at an angle to the smoke flow direction. After impacting on the collection plate 1100, the pollutant particles such as oil fume can directly adhere to the surface of the collection plate 1100 due to their high viscosity, thus completing the efficient collection of the pollutant particles such as oil fume.

[0066] The collection plate 1100 can be powered on or off. When the collection plate 1100 is not powered on, pollutant particles such as oil fume are collected by the impact and adhesion between the pollutant particles such as oil fume and the collection plate 1100. The case where the collection plate 1100 is powered on will be specifically described below.

[0067] In an alternative embodiment of the present embodiment, the collection mechanism 11 includes a collection module 110. The collection module 110 includes a limit post 1101 and a plurality of collection plates 1100 that are sequentially and obliquely stacked at intervals. In other words, the collection module 110 includes two, three or more collection plates 1100 that are arranged at intervals. A collection channel is formed between every two adjacent collection plates 1100, so that the flue gas particles carried can enter the collection channel through the flue gas channel.

[0068] The limit post 1101 passes through the plurality of collection plates 1100 to position the plurality of collection plates 1100, thereby simplifying the structure for connecting and positioning the plurality of collection plates 1100 and not affecting the flow cross-sectional area of the collection channel.

[0069] Optionally, the stacking direction of the plurality of collection plates 1100 of the collection module 110 is perpendicular to the flue gas flow direction.

[0070] In addition, in the collection mechanism 11 of the prior art, when the space between the electrode plates is narrow and the depth is large, a high-pressure water gun is commonly used for flushing. However, when flushing, there are angle limitations and it is often not cleaned thoroughly; or a stick-shaped long hair brush (similar to a small feather duster) is inserted into the space between the plates for side-pressure sliding scrubbing, which is laborious, time-consuming and has a poor effect.

[0071] For the collection module 110 of the collection mechanism 11, the collection plate 1100 is arranged at an angle with the flue gas flow direction of the flue gas channel and is inclined relative to the placement plane. The set angle matches the flushing angle. Therefore, whether using water flushing or brush scrubbing, it is easier to contact the surface of the collection plate 1100 that needs to be cleaned, which is convenient for cleaning. Moreover, the restrictions on the brush are reduced. As long as it is a brush, the form of the cleaning tool is not restricted, and the way of using the cleaning tool is not restricted. For example, the restriction on the water flushing angle is also reduced.

[0072] In addition, due to the high collection efficiency of the collection module 110, the length of the collection module 110 along the flue gas flow direction can be correspondingly shortened, so that the cleaning depth of the collection module 110 is shortened, and the convenience and cleanliness of cleaning are also improved.

[0073] Optionally, the plurality of collection plates 1100 of the collection module 110 are arranged parallel to each other.

[0074] Optionally, in order to facilitate flushing and scrubbing, an oil and water transmission layer is coated on the collection plate 1100.

[0075] In an alternative solution of this embodiment, the materials of the collection plate 1100 and the limiting posts 1101 both include conductive materials. The collection plate 1100 is connected to the output electrode through the limiting posts 1101 to charge the collection plate 1100. Among them, the output electrode can be a high-voltage positive electrode, a high-voltage negative electrode or a ground electrode.

[0076] Optionally, the conductive material can include conductive metal or conductive composite material. The conductive metal is, for example, iron, nickel, tungsten, aluminum or other alloys with conductivity. The conductive composite material is, for example, conductive plastic, conductive rubber, conductive paint, conductive fiber, conductive adhesive or conductive ink, etc.

[0077] In an alternative solution of this embodiment, two adjacent collection plates 1100 of the collection module 110 carry the same kind of charge or different kinds of charges.

[0078] When two collection plates 1100 carry the same kind of charge, the charge densities of the two collection plates 1100 can be the same or different. Among them, when the charge densities of adjacent collection plates 1100 are the same, under the action of the self-electric field of the collection plate 1100, pollutant particles such as oil fume with opposite charges move towards the collection plate 1100, thereby realizing the adsorption and collection of pollutant particles and improving the collection efficiency of pollutant particles.

[0079] When the charge densities of adjacent collection plates 1100 are different, a collection electric field pointing to the collection plate 1100 with a lower electric potential is formed between the adjacent collection plates 1100, so that pollutant particles such as oil fume move towards one of the collection plates 1100 under the action of the collection electric field, thereby improving the collection efficiency of pollutant particles such as oil fume.

[0080] When two collection plates 1100 carry different kinds of charges, the two adjacent collection plates 1100 are respectively positively charged and negatively charged, or are respectively positively charged and grounded, or are negatively charged and grounded. Thus, a collection electric field pointing to the collection plate 1100 with a lower electric potential is formed between the two collection plates 1100, improving the collection efficiency of pollutant particles such as oil fume.

[0081] In an alternative solution of this embodiment, as shown in Figure 5 the collection mechanism 11 includes a plurality of collection modules 110 arranged at intervals in sequence along the smoke flow direction, so as to realize multiple collections of pollutant particles such as oil fume in the smoke through the plurality of collection modules 110, and improve the purification efficiency of the smoke.

[0082] In an alternative solution of this embodiment, the angle A formed between the collection plates 1100 of adjacent collection modules 110 is greater than 90° and less than 180°. For example, the angle A between the collection plates 1100 of adjacent collection modules 110 is 95°, 100°, 120°, 135°, 160°, etc.

[0083] As a result, the collection plates 1100 of adjacent collection modules 110 are at reverse angles. When pollutant particles such as oil fume enter the next collection module 110 from the previous collection module 110, the angle between them exceeds the angle at which small-sized pollutant particles can turn, resulting in a better impact effect. The pollutant particles of all particle size ranges are purified and collected through impact collection.

[0084] In an alternative solution of this embodiment, the acute angle formed between the collection plate 1100 and the smoke flow direction is not less than 10° and not greater than 80°. For example, the acute angle formed between the collection plate 1100 and the smoke flow direction is 10°, 30°, 45°, 60°, 80°, etc.

[0085] Specifically, the acute angle B formed between the collection plate 1100 and the negative direction of the smoke flow is not less than 10° or the acute angle C formed between the collection plate 1100 and the positive direction of the smoke flow is not greater than 80°. As a result, the inclination angle of the collection plate 1100 is large enough so that the turning angle of pollutant particles such as oil fume is less than the acute angle B or the acute angle C, and the impact probability of the particles on the collection plate 1100 is increased.

[0086] The acute angle formed between the collection plate 1100 and the negative direction of the smoke flow is not greater than 80°, or the acute angle formed between the collection plate 1100 and the positive direction of the smoke flow is not greater than 80°. Thus, it is possible to avoid an excessive inclination angle of the collection plate 1100, reduce the wind resistance, and prevent the smoke from being unable to flow smoothly into or out of the collection channel due to excessive wind resistance.

[0087] In this embodiment, when the charging polarities of all the collection plates 1100 of the collection module 110 are the same, at least one limiting post 1101 of the collection module 110 can conduct electricity and conduct the positive output electrode or the negative output electrode.

[0088] In this embodiment, when the charging polarities of all the collection plates 1100 of a collection module 110 alternate, the number of limiting posts 1101 is not less than two, and all the limiting posts 1101 include a first limiting post and a second limiting post.

[0089] Each adjacent pair of collection plates 1100 is electrically connected to output electrodes of different electricities through a first limiting post and a second limiting post respectively. That is to say, the first limiting post only contacts and conducts with one of each two adjacent collection plates 1100, and the second limiting post only contacts and conducts with the other of each two adjacent collection plates 1100, so as to achieve the alternate charging of different kinds of charges of the collection module 110 through a simple and safe structure.

[0090] Among them, each adjacent pair of collection plates 1100 is electrically connected to a positive high-voltage output electrode and a negative high-voltage output electrode through a first limiting post and a second limiting post respectively, so that each adjacent pair of collection plates 1100 is positively charged and negatively charged respectively; or, each adjacent pair of collection plates 1100 is electrically connected to a positive high-voltage output electrode and a ground electrode through a first limiting post and a second limiting post respectively, so that each adjacent pair of collection plates 1100 is positively charged and grounded; each adjacent pair of collection plates 1100 is electrically connected to a negative high-voltage output electrode and a ground electrode through a first limiting post and a second limiting post respectively, so that each adjacent pair of collection plates 1100 is negatively charged and grounded respectively.

[0091] 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 it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; 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 some features included in other embodiments but not other features, the combination of the features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, any one of the claimed embodiments can be used in any combination. The information disclosed in this background art section is only intended to deepen the understanding of the overall background art of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art.

Claims

1. A smoke pipe purification device, characterized in that, it includes a charge coagulation mechanism and a collection mechanism; the charge coagulation mechanism includes a plurality of charge flow plates arranged at intervals in sequence along the smoke flow direction, the charge flow plates are provided with a plurality of flow holes with gradually changing flow cross-sections along the smoke flow direction, and each of the flow holes has at least one adjacent flow hole with a different gradually changing rule of the flow cross-section, so as to form a smoke flow velocity gradient at the outlets of the plurality of flow holes; the charge flow plates have conductivity, and at least two of the charge flow plates of the charge coagulation mechanism are used for electrically connecting with output electrodes of different polarities; the collection mechanism is arranged behind the charge coagulation mechanism along the smoke flow direction, the collection mechanism includes a collection module, and the collection module includes a collection plate arranged at an angle to the smoke flow direction; the plurality of flow holes are arranged in a multi-row and multi-column array on the charge flow plates, and each of the flow holes is provided with at least one adjacent flow hole with a gradually changing direction of the flow cross-section opposite to that of the adjacent flow hole; for two adjacent charge flow plates along the smoke flow direction, the flow holes with gradually shrinking flow cross-sections along the smoke flow direction on the charge flow plate located behind correspond to the flow holes with gradually expanding flow cross-sections along the smoke flow direction on the charge flow plate located in front; the flow holes with gradually expanding flow cross-sections along the smoke flow direction on the charge flow plate located behind correspond to the flow holes with gradually shrinking flow cross-sections along the smoke flow direction on the charge flow plate located in front.

2. The smoke pipe purification device according to claim 1, characterized in that, any two adjacent flow holes in the same column have flow cross-sections with opposite gradually changing directions; and / or, any two adjacent flow holes in the same row have flow cross-sections with opposite gradually changing directions.

3. The smoke pipe purification device according to claim 1, characterized in that, the flow cross-section of the flow hole is square, and the thickness of the hole wall between any two adjacent flow holes is less than 1 mm.

4. The smoke pipe purification device according to claim 1, characterized in that, the distance between adjacent charge flow plates is greater than 5 mm.

5. The smoke pipe purification device according to claim 1, characterized in that, the collection module includes a limit post and a plurality of collection plates stacked at intervals and inclined in sequence; the limit post passes through the plurality of collection plates to position the plurality of collection plates.

6. The smoke pipe purification device according to claim 5, characterized in that, the materials of the collection plate and the limit post both include conductive materials, and the collection plate is connected to the output electrode through the limit post to make the collection plate charged; adjacent two collection plates of the collection module carry the same kind of charge or different kinds of charges.

7. The smoke pipe purification device according to claim 6, characterized in that, when adjacent two collection plates of the collection module carry different kinds of charges, all the limit posts include a first limit post and a second limit post; each adjacent two collection plates are respectively electrically connected to output electrodes of different polarities through the first limit post and the second limit post.

8. The flue pipe purification device according to claim 7, characterized in that, the collection mechanism includes a plurality of collection modules arranged side by side at intervals along the flue gas flow direction.

9. The flue pipe purification device according to claim 7, characterized in that, the collection plates in each collection module are arranged parallel to each other; the included angle formed between the collection plates of adjacent collection modules is an obtuse angle; the acute angle formed between the collection plate and the flue gas flow direction is not less than 10° and not more than 80°.

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