Flue gas purification device

Abstract

The utility model provides a flue gas purification device, which belongs to the technical field of sewage and sludge treatment and comprises a casing, a flue dust treatment bin is arranged in the casing, a plurality of filter bags are mounted in the flue dust treatment bin at equal intervals, filter bag frames are arranged in the filter bags, an oil fume treatment bin is further arranged in the casing, a dust gas inlet is arranged at one end of the casing, and a purified gas outlet is arranged at the other end of the casing. The oil fume treatment bin is arranged on one side, close to the dust gas inlet, in the shell; a plurality of anode electrode plates and a plurality of cathode discharge units are arranged in the lampblack treatment bin, the anode electrode plates are sheet-shaped circles, the anode electrode plates are arranged at equal intervals, the circle centers of the anode electrode plates are fixedly connected through a rotating rod, and one end of the rotating rod is connected with a pole plate motor; the cathode discharge unit comprises a plurality of cathode discharge rods, and the cathode discharge rods are arranged between every two adjacent anode electrode plates; a cleaning brush is further arranged between every two adjacent anode electrode plates, the multiple cleaning brushes are connected through a transmission mechanism and are in transmission connection with a cleaning motor, lampblack particles and dust generated during incineration and drying of animal tissue fragments can be effectively treated, the purification effect is good, efficiency is high, high temperature resistance and corrosion resistance are achieved, and cleaning is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage and sludge treatment, and specifically to a sludge incineration flue gas purification device. Background Art

[0002] Sludge is the main by-product after slaughter sewage treatment, which contains a large amount of harmful substances such as organic fragments, heavy metals, pathogenic microorganisms, and residues of chemical coagulants. If it is randomly discarded without harmless treatment, it will cause great harm to the environment and human health. Sludge drying and incineration is the current main treatment method, which can significantly reduce the volume of sludge, effectively kill the pathogens in the sludge at the same time, and reduce the potential pollution risk of sludge to the environment. However, the flue gas generated by incineration needs to be treated harmlessly before it can be discharged, otherwise it may cause secondary pollution to the environment.

[0003] When treating the sludge generated in the purification process of traditional slaughter sewage, it is usually mixed with biomass particles as fuel after drying treatment and then incinerated uniformly. For example, a heavy metal adsorption processor for dry granule incineration flue gas disclosed in Chinese Patent No.: ZL202221354362.7 includes a drying structure, an adsorption and purification device, a gas storage tank, connecting pipe I, and connecting pipe II. The drying structure includes an inflation pipe, an igniter, and a drying furnace. The drying furnace is connected to the adsorption and purification device through connecting pipe I, and the adsorption and purification device is connected to the gas storage tank through connecting pipe II. This technical solution incinerates the sludge through the drying structure to dry the sludge and generate flue gas containing heavy metals. The heavy metals in the flue gas are adsorbed by the adsorption and purification device to purify the flue gas, and the purified flue gas is stored in the gas storage tank for reuse. This technical solution uses an adsorption purification box to purify and adsorb the flue gas generated during sludge drying and incineration. However, the sludge generated during the slaughter sewage treatment process has a high water content and contains a large amount of grease, which will generate oil fumes after incineration. The adhesion of the oil fumes is relatively strong. Directly using an adsorption layer board, zeolite board, or filter bag will form thick oily sludge on their surfaces, affecting the subsequent adsorption and filtration effects, and it is not easy to clean, requiring regular replacement, resulting in high long-term operating costs and limited use effects. Summary of the Invention

[0004] The technical problem to be solved by the utility model is how to adsorb and purify the oil fumes generated by sludge combustion, and how to clean the purification and filtration components of the oil fumes and dust. The purpose of the utility model is to provide a flue gas purification device that can first capture the oil fumes, then filter the dust, and is convenient to clean.

[0005] The technical solution adopted by the present utility model is as follows: A flue gas purification device includes a casing. Inside the casing, there is a dust treatment chamber, in which a plurality of filter bags are installed at equal intervals. A filter bag frame is provided in each filter bag. An oil fume treatment chamber is also provided inside the casing. One end of the casing is provided with a dust gas inlet, and the other end is provided with a clean gas outlet. The oil fume treatment chamber is arranged on one side of the casing close to the dust gas inlet, and the dust treatment chamber is arranged on one side of the casing close to the clean gas outlet; A plurality of anode electrode plates and a plurality of cathode discharge units are provided in the oil fume treatment chamber. The anode electrode plates are sheet-shaped circles. A plurality of anode electrode plates are arranged at equal intervals and the centers are fixedly connected by a rotating rod. One end of the rotating rod is connected to a plate motor; The cathode discharge unit includes a plurality of cathode discharge rods, and a cathode discharge rod is arranged between every two adjacent anode electrode plates; A cleaning brush is also arranged between every two adjacent anode electrode plates. A plurality of cleaning brushes are connected to each other through a transmission mechanism and are in transmission connection with a cleaning motor.

[0006] By using the flue gas purification device provided by the present utility model, the following beneficial effects can be obtained:

[0007] (1) Through the spaced anode electrode plates and the cathode discharge rods arranged between two adjacent anode electrode plates, when the gas containing oil fume and fine dust generated during the incineration of sludge drying passes through the non-uniform electric field formed by the high-voltage DC power supply between the anode electrode plates and the cathode discharge rods, the oil fume particles and dust are negatively charged and fly towards the anode electrode plates and are captured. It can effectively treat the oil fume particles and dust generated during the incineration and drying of animal tissue fragments, is resistant to high temperature and corrosion, and has a large amount of waste gas treatment.

[0008] (2) While the oil mist is adsorbed electrostatically, the temperature of the soot decreases after passing through a certain distance, and then it enters the dust treatment chamber and is blocked by the filter bags and adheres to the outer side of the filter bags. By removing the oil fume and dust, the purpose of purifying the soot is achieved.

[0009] (3) By setting the anode electrode plates in a shape and connecting the plate motor through a rotating rod, after the oil fume and some dust particles adhere to the surface of the anode electrode plates, the dirt attached to the anode electrode plates can be removed through the relative movement between the surface of the anode electrode plates and the side surface of the cleaning brush, achieving the purpose of cleaning the anode electrode plates and avoiding deformation or mechanical damage of the anode electrode plates caused by cleaning by vibration.

[0010] Preferably, a plurality of barbs are symmetrically distributed on the left and right sides of the side wall of the cathode discharge rod. The barbs on the same side are arranged at equal intervals, and the tips of the barbs all point to the adjacent anode electrode plate on the same side.

[0011] The evenly spaced and symmetrically distributed barbs on the cathode discharge rod can make the electric field distribution more uniform, thereby generating more corona current, more effectively capturing and removing dust particles, and improving the purification and dust removal efficiency.

[0012] Preferably, the cathode discharge rods in each cathode discharge unit are parallel to each other and arranged at equal intervals, and ends of the cathode discharge rods on the same side are electrically connected through the same connecting rod.

[0013] By using multiple parallel and equally spaced cathode discharge rods on the cathode discharge unit, a uniform electric field can be created between every two anode electrode plates, thereby improving the efficiency of corona discharge and making the electric field strength in the entire dust removal area more balanced. At the same time, the electric field shielding effect is reduced, that is, mutual interference between the electric fields of adjacent cathode rods is avoided, ensuring that each cathode rod can effectively generate corona discharge.

[0014] Preferably, one end of the cathode discharge rod away from the power connection rod points to the rotating rod.

[0015] The dead zone in the center of the circular anode electrode plate where no dust is collected is reduced, and the smoke collection area is increased as much as possible, thereby improving the smoke collection and purification effect.

[0016] Preferably, a plurality of cathode discharge units are provided, and the plurality of cathode discharge units are arranged in a ring array around the rotating rod.

[0017] The cathode discharge units arranged in a circular array around the rotating rod further generate more corona currents between every two adjacent anode electrode plates, thereby more effectively capturing and removing dust particles.

[0018] Preferably, the power connection rod is located outside the anode electrode rod, and the virtual axis of the power connection rod is parallel to the virtual axis of the rotating rod.

[0019] By arranging the power connection rod in the cathode discharge unit outside the anode electrode rod, the rotation of the anode electrode plate can be prevented from being affected while current is transmitted to the cathode discharge rod, thereby avoiding damage to the equipment caused by electric field short circuit.

[0020] Preferably, the cathode discharge rod, the thorn and the connection rod are not in contact with the anode electrode plate.

[0021] To avoid short circuit and spark discharge causing damage to the equipment.

[0022] Preferably, the plurality of cleaning brushes are arranged in a straight line and are connected to each other through a transmission mechanism, the transmission mechanism is connected to the cleaning motor, and the cleaning motor is fixedly connected to the casing.

[0023] All cleaning brushes are driven to rotate by the transmission mechanism and the cleaning motor, so that the surfaces of all anode electrode plates that capture smoke and dust can be cleaned at the same time, thereby improving the cleaning efficiency.

[0024] Preferably, an inverse blow structure is installed on the outer side of the casing. The air outlet end of the inverse blow mechanism passes through the casing and extends into the soot treatment bin, and a plurality of air outlet openings in the inverse blow mechanism face the openings of each filter bag.

[0025] Through the inverse blow mechanism, the filter bag can be regularly inflated with inverse blow gas to clean the dust adsorbed on the outer surface of the filter bag, restore its filtering performance and air permeability, extend the service life of the filter bag, reduce the operating resistance and thus reduce the energy consumption.

[0026] Preferably, ash hoppers are provided at the bottoms of both the oil fume treatment bin and the soot treatment bin.

[0027] The grease and dust particles falling from the oil fume treatment bin during dust removal and cleaning are collected through the ash hopper at the bottom of the oil fume treatment bin, and the dust falling from the soot treatment bin during the filtering of the filter bag and the inverse blow dust cleaning is collected through the ash hopper at the bottom of the soot treatment bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention 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 the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0030] Figure 2 is a front view of the present invention;

[0031] Figure 3 is a three-dimensional structure schematic diagram of the horizontal cross-section of the present invention;

[0032] Figure 4 is a cross-sectional view of the present invention;

[0033] Figure 5 is a structure schematic diagram of the anode electrode plate, rotating rod, cathode discharge rod, barbs and cleaning brush and transmission mechanism in the present invention;

[0034] Figure 6 is a schematic diagram when a plurality of cathode discharge units are arranged in a circular array in the present invention;

[0035] Figure 7 is a structure schematic diagram of the cathode discharge unit in the present invention;

[0036] Figure 8 is a schematic diagram of the filter bag and the filter bag frame in the present invention.

[0037] Reference signs: 1 - housing, 11 - dust and gas inlet, 12 - clean gas outlet, 13 - ash hopper, 2 - oil fume treatment chamber, 21 - anode electrode plate, 211 - rotating rod, 212 - plate motor, 22 - cathode discharge unit, 221 - cathode discharge rod, 222 - barbs, 223 - power connection rod, 24 - cleaning brush, 25 - transmission mechanism, 26 - cleaning motor, 3 - smoke and dust treatment chamber, 31 - filter bag, 32 - filter bag frame, 33 - reverse blowing mechanism. Detailed implementation manners

[0038] The following will combine the attached Figure 1-8 The technical solutions of the present utility model will be described clearly and completely. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0039] In the description of the present utility model, 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 directly connected or indirectly connected 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 utility model can be understood according to specific situations.

[0040] Embodiment 1

[0041] The following will be further described with reference to specific embodiments. Figure 1-8As shown in the figure, this embodiment is a flue gas purification device, which includes a casing 1. Inside the casing 1, there is a dust treatment chamber 3. A plurality of filter bags 31 are installed at equal intervals in the dust treatment chamber 3. Inside each filter bag 31, there is a filter bag frame 32. There is also an oil fume treatment chamber 2 inside the casing 1. One end of the casing 1 is provided with a dust gas inlet 11, and the other end is provided with a clean gas outlet 12. The oil fume treatment chamber 2 is arranged on one side of the casing 1 close to the dust gas inlet 11, and the clean dust treatment chamber 3 is arranged on one side of the casing 1 close to the clean gas outlet 12. Inside the oil fume treatment chamber 2, there are a plurality of anode electrode plates 21 and a plurality of cathode discharge units 22. The anode electrode plates 21 are sheet-shaped circles. A plurality of anode electrode plates 21 are arranged at equal intervals, and the centers of the circles are fixedly connected through a rotating rod 211. One end of the rotating rod 211 is connected to a plate motor 212. The cathode discharge unit 22 includes a plurality of cathode discharge rods 221. A cathode discharge rod 221 is arranged between every two adjacent anode electrode plates 21. There is also a cleaning brush 24 between every two adjacent anode electrode plates 21. A plurality of cleaning brushes 24 are connected to each other through a transmission mechanism 25 and are in transmission connection with a cleaning motor 26. The non-uniform electric field is generated by the anode electrode plates 21 and the cathode discharge rods 221. When incinerating sludge for drying, the oil fume and fine dust generated are negatively charged and fly towards the anode electrode plates 21 and are captured, thereby adsorbing the oil fume particles and part of the dust generated during the incineration and drying of animal tissue fragments. After the oil mist is adsorbed electrostatically, its temperature decreases, and then it enters the dust treatment chamber 3 and is blocked by the filter bags 31 and adheres to the outer side of the filter bags 31, removing the oil fume and dust at the same time. The dirt attached to the anode electrode plates 21 is removed by the friction generated by the relative movement between the surface of the anode electrode plates 21 and the side surface of the cleaning brushes 24, achieving the purpose of cleaning the anode electrode plates 21.

[0042] Referring to Figure 7 As shown in the figure, in this embodiment, a plurality of barbs 222 are symmetrically distributed on the left and right sides of the side wall of the cathode discharge rod 221. The plurality of barbs 222 on the same side are arranged at equal intervals. The tips of the barbs 222 all point to the adjacent anode electrode plate 21 on the same side. The electric field distribution can be made more uniform by the plurality of barbs 222 that are equally spaced and symmetrically distributed on the cathode discharge rod 221, thereby generating more corona current, more effectively capturing and removing dust particles, and improving the purification and dust removal efficiency.

[0043] Referring to Figure 7As shown, in the present embodiment, the cathode discharge rods 221 in each of the cathode discharge units 22 are parallel to each other and arranged at equal intervals, and the ends of the same side of the plurality of cathode discharge rods 221 are electrically connected via the same connecting rod 223. The plurality of parallel and equally spaced cathode discharge rods 221 on the cathode discharge unit 22 enable a uniform electric field between every two anode electrode plates 21, thereby improving the efficiency of corona discharge and making the electric field strength of the entire dust removal area more balanced. At the same time, the electric field shielding effect is reduced, i.e., mutual interference of the electric fields between adjacent cathode discharge rods 221 is avoided, thereby ensuring that each cathode discharge rod 221 can effectively generate corona discharge.

[0044] Reference Figure 5 As shown, in this embodiment, the end of the cathode discharge rod 221 away from the power connection rod 223 points to the rotating rod 211, reducing the dead zone area of ​​the center of the circular anode electrode plate 21 where no dust is collected, and increasing the smoke collection area as much as possible, thereby improving the smoke collection and purification effect.

[0045] Reference Figure 6 As shown, in this embodiment, a plurality of cathode discharge units 22 are provided, and the plurality of cathode discharge units 22 are arranged in a circular array around the rotating rod 211. The cathode discharge units 22 arranged in a circular array around the rotating rod 211 further generate more corona currents between every two adjacent anode electrode plates 21, thereby more effectively capturing and removing dust particles.

[0046] Reference Figure 5 As shown, in this embodiment, the power connecting rod 223 is located on the outside of the anode electrode plate 21, and the virtual axis of the power connecting rod 223 is parallel to the virtual axis of the rotating rod 211. By setting the power connecting rod 223 in the cathode discharge unit 22 on the outside of the anode electrode plate 21, it is possible to transmit current to the cathode discharge rod 221 without affecting the rotation of the anode electrode plate 21, thereby avoiding damage to the equipment due to electric field short circuit.

[0047] Reference Figure 5 As shown, in this embodiment, the cathode discharge rod 221, the thorn 222 and the power connection rod 223 are not in contact with the anode electrode plate 21 to avoid short circuit and spark discharge causing damage to the equipment.

[0048] Reference Figure 3 or Figure 5 As shown, in this embodiment, a plurality of the cleaning brushes 24 are arranged in a straight line and are connected to each other through a transmission mechanism 25, the transmission mechanism 25 is connected to a cleaning motor 26, the cleaning motor 26 is fixedly connected to the casing 1, and all the cleaning brushes 24 are driven to rotate by the transmission mechanism 25 and the cleaning motor 26, so that the surfaces of all anode electrode plates 21 that capture smoke and dust can be cleaned at the same time, thereby improving the cleaning efficiency.

[0049] Referring to Figure 1-2 As shown, in this embodiment, an inverse blow mechanism 33 is installed on the outer side of the casing 1. The air outlet end of the inverse blow mechanism 33 passes through the casing 1 and extends into the soot treatment bin 3, and a plurality of air outlet openings in the inverse blow mechanism 33 are facing the openings of each filter bag 31. Through the inverse blow mechanism 33, the filter bag 31 can be regularly inflated by inverse blow gas to clean the dust adsorbed on the outer surface of the filter bag 31, restore its filtering performance and air permeability, extend the service life of the filter bag 31, reduce the operating resistance, and thus reduce the energy consumption.

[0050] Referring to Figure 4 As shown, in this embodiment, ash hoppers 13 are provided at the bottoms of both the oil fume treatment bin 2 and the soot treatment bin 3. The grease and dust particles falling from the oil fume treatment bin 2 during the dust removal and cleaning processes are collected through the ash hopper 13 at the bottom of the oil fume treatment bin 2, and the dust falling from the soot treatment bin 3 during the filtering and inverse blow dust cleaning processes of the filter bag 31 is collected through the ash hopper 13 at the bottom of the soot treatment bin 3.

[0051] Embodiment 2

[0052] When using the present utility model, the flue gas generated during the sludge incineration and drying is introduced into the dust gas inlet 11 on the casing 1, and the clean gas outlet 12 is connected to an induced draft mechanism or a high-altitude chimney. The flue gas enters the oil fume treatment bin 2 inside the casing 1 from the dust gas inlet 11. By connecting all the connecting rods 223 to the negative pole of a high-voltage DC power supply and all the anode electrode plates 21 to the positive pole of the high-voltage DC power supply, the connecting rods 223 respectively transmit the current to all the cathode discharge rods 221 connected thereto, and the cathode discharge rods 221 then transmit the current to the barbs 222. Through the evenly distributed barbs 222, a uniform electric field distribution is formed between every two anode electrode plates 21, thereby generating more corona current discharges and generating a high concentration of negatively charged particles around the barbs 222. When the soot gas passes through the electric field, the oil fume and dust particles collide with these negatively charged particles to obtain negative charges. After being charged, the oil fume and dust particles move towards the positively charged anode electrode plate 21 under the action of the electric field force and are deposited on the surface of the anode electrode plate 21, achieving the purpose of capturing the oil fume and part of the dust;

[0053] The remaining dust continues to move into the soot treatment bin 3 under the action of attraction or pressure. Since a plurality of filter bags 31 are installed at equal intervals in the soot treatment bin 3, and the filter bags 31 are supported by the filter bag frames 32 to maintain their shapes and structures, as Figure 8As shown, it will not collapse under the action of gravity or pressure, thus ensuring effective contact between the filter bag 31 and the gas, enabling the outflowing gas to pass through the filtration of the filter bag 31, further filtering the remaining soot through the filter bag 31, and achieving the effect of purifying the oil-containing flue gas generated during sludge incineration through front and rear oil fume adsorption and dust filtration. The purified flue gas continues to flow and is discharged from the clean gas outlet 12 to the suction device for further treatment, or is discharged through a high-altitude chimney.

[0054] Embodiment 3

[0055] When cleaning the oil fume treatment chamber 2, the rotating rod 211 is driven to rotate by the plate electrode motor 212, and the rotating rod 211 drives all the anode electrode plates 21 to rotate synchronously. At the same time, the cleaning motor 26 drives a plurality of cleaning brushes 24 to rotate between two adjacent anode electrode plates 21 through the transmission mechanism 25, so that the side surface of the anode electrode plate 21 and the side surface of the cleaning brush 24 undergo relative displacement, and the soot and grease attached to the surface of the anode electrode plate 21 are cleaned by the cleaning brush 24, and are collected and discharged through the ash hopper 13 at the bottom of the oil fume treatment chamber 2. By regularly cleaning the grease and soot on the anode electrode plate 21, the soot falls off, reducing the secondary dust emission of the anode electrode plate 21, achieving more efficient dust removal, reducing maintenance costs and improving operating efficiency; when cleaning the dust treatment chamber 3, air is blown into the opening of the filter bag 31 through the back-blowing mechanism 33 to expand the filter bag 31, helping to shake off the dust on the outer surface of the filter bag 31. Through regular reverse blowing, the blockage and excessive wear of the filter bag 31 can be prevented, thereby extending the service life of the filter bag 31.

[0056] The directional terms mentioned in the present utility model, such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] The standard parts used in this application document can all be purchased from the market, and can also be customized according to the description of the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common knowledge in the art. And this application document is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail in this application document.

[0058] 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 described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flue gas purification device, comprising a housing (1), a smoke dust processing chamber (3) being provided in the housing (1), a plurality of filter bags (31) being installed at equal intervals in the smoke dust processing chamber (3), and a filter bag frame (32) being provided in each filter bag, wherein: A fume treatment chamber (2) is also provided in the casing (1); a dust gas inlet (11) is provided at one end of the casing (1), and a clean gas outlet (12) is provided at the other end; the fume treatment chamber (2) is arranged on a side of the casing (1) close to the dust gas inlet (11); and a fume treatment chamber (3) is arranged on a side of the casing (1) close to the clean gas outlet (12); a plurality of anode electrode plates (21) and a plurality of cathode discharge units (22) are provided in the fume treatment chamber (2); the anode electrode plates (21) are circular in shape, and the plurality of anode electrode plates (22) are arranged on a side of the casing (1) close to the clean gas outlet (12). (21) are arranged at equal intervals and the center of the circle is fixedly connected by a rotating rod (211), one end of the rotating rod (211) is connected to a plate motor (212); the cathode discharge unit (22) comprises a plurality of cathode discharge rods (221), and a cathode discharge rod (221) is provided between each two adjacent anode electrode plates (21); a cleaning brush (24) is provided between each two adjacent anode electrode plates (21), and the plurality of cleaning brushes (24) are connected to each other through a transmission mechanism (25) and are transmission-connected to a cleaning motor (26).

2. The flue gas purification device according to claim 1, characterized in that: A plurality of thorns (222) are symmetrically distributed on the left and right sides of the side wall of the cathode discharge rod (221), and the plurality of thorns (222) on the same side are arranged at equal intervals, and the tips of the thorns (222) all point to the anode electrode plate (21) close to the same side.

3. The flue gas purification device according to claim 2, characterized in that: The cathode discharge rods (221) in each cathode discharge unit (22) are parallel to each other and arranged at equal intervals, and the ends of the cathode discharge rods (221) on the same side are electrically connected via the same connecting rod (223).

4. The flue gas purification device according to claim 3, characterized in that: One end of the cathode discharge rod (221) away from the power connection rod (223) points toward the rotating rod (211).

5. The flue gas purification device according to claim 4, characterized in that: A plurality of cathode discharge units (22) are provided, and the plurality of cathode discharge units (22) are arranged in a ring array around the rotating rod (211).

6. The flue gas purification device according to claim 5, characterized in that: The power connection rod (223) is located outside the anode electrode rod, and the virtual axis of the power connection rod (223) and the virtual axis of the rotating rod (211) are parallel to each other.

7. The flue gas purification device according to claim 6, characterized in that: The cathode discharge rod (221), the thorn (222) and the power connection rod (223) are not in contact with the anode electrode plate (21).

8. The flue gas purification device according to claim 1, characterized in that: The plurality of cleaning brushes (24) are arranged in a straight line and are connected to each other through a transmission mechanism (25); the transmission mechanism (25) is connected to a cleaning motor (26); and the cleaning motor (26) is fixedly connected to the housing (1).

9. The flue gas purification device according to claim 8, characterized in that: A back-blowing mechanism (33) is installed on the outer side of the casing (1), the air outlet end of the back-blowing mechanism (33) passes through the casing (1) and extends into the smoke treatment chamber (3), and the multiple air outlets in the back-blowing mechanism (33) are directly opposite to the opening of each filter bag (31).

10. The flue gas purification device according to claim 9, characterized in that: The bottom of the oil fume treatment bin (2) and the smoke dust treatment bin (3) are both provided with an ash hopper (13).

Images