Electrostatic precipitator for exhaust gas treatment

Abstract

An electrostatic dust removal device for waste gas treatment includes a dust removal box and an electrode group. The electrode group is arranged in the interior of the dust removal box between the air inlet cone and the air outlet cone and is electrically connected with an external power supply device. The electrode group includes a plurality of dust collecting electrodes parallel to the conveying direction of the waste gas. Channels for the waste gas to pass through are formed between the dust collecting electrodes. Discharge electrodes are arranged in the interior of the channels. The dust collecting electrodes include a plurality of electrode unit plates connected in a head-to-tail manner. A plurality of concave parts and convex parts are alternately distributed along the conveying direction of the waste gas. Compared with the existing structure of the flat dust collecting plate, the surface area of the dust collecting electrode is increased in the case of the same length, more dust particles can be adsorbed, and due to the change of the width of the channel, the impact force of the waste gas flow on the surface of the dust collecting electrode is smaller when flowing, which can slow down the problem of secondary flying of dust during cleaning.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste gas treatment, and specifically relates to an electrostatic dust removal device for waste gas treatment. Background Art

[0002] An electrostatic precipitator (ESP) is a highly efficient air pollution control device. Its working principle is to ionize flue gas using a high-voltage electric field. Inside the ESP are a discharge electrode (negative) and a dust collecting electrode (positive). When the high-voltage electric field acts on these two electrodes, the gas molecules in the flue gas are ionized, generating a large number of electrons and ions. These ions, under the influence of the electric field, move toward the two poles and collide with dust particles in the airflow during their movement, charging them. The charged dust is then separated from the airflow by the electric field and moves toward the plates or lines of opposite polarity, ultimately adsorbed there by electrostatic forces. Through a vibration device, the dust can fall into the ash hopper, thereby purifying the flue gas.

[0003] The dust collecting electrodes of a dust collector are generally composed of two parallel flat plate structures. The dust collecting electrode is located in the middle of the two dust collecting electrodes. The dust on the two electrodes needs to be beaten by a vibrating device to make the dust particles fall down into the dust collecting hopper. However, the vibration is likely to cause the dust to fly secondary. Since the channel between the dust collecting electrodes is unobstructed, the dust will continue to flow to the rear side with the air flow. Therefore, there is currently a wet electrostatic precipitator to solve the secondary dust problem, but the secondary dust problem of the dry electrostatic precipitator still needs to be solved. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention creatively adopts an electrostatic precipitator for waste gas treatment to at least partially solve the problems raised in the above background technology.

[0005] The technical solution adopted is as follows: In the first aspect of the present invention, an electrostatic dust removal device for waste gas treatment is proposed, comprising:

[0006] A dust removal box is provided with an air inlet cone hopper and an air exhaust cone hopper at both ends of the dust removal box along the conveying direction of the exhaust gas, and an ash hopper is fixed at the bottom of the dust removal box;

[0007] an electrode group, disposed inside the dust removal box, between the air inlet cone and the air outlet cone, and electrically connected to an external power supply device;

[0008] a rapper, disposed in the dust removal box and used to strike the electrode group;

[0009] In which, the electrode group includes a plurality of dust collecting electrodes parallel to the exhaust gas conveying direction, a channel for the exhaust gas to pass through is formed between the dust collecting electrodes, a discharge electrode is provided inside the channel, and the dust collecting electrode includes a plurality of electrode unit plates connected end to end, and the plurality of electrode unit plates form a plurality of alternatingly distributed concave portions and convex portions along the exhaust gas conveying direction.

[0010] Furthermore, the electrode unit plate is constructed as a plate with an arc-shaped cross section, a plurality of discharge electrodes are provided along the exhaust gas conveying direction, and each discharge electrode is arranged at the axial position of the electrode unit plate, and the cross-sectional curvature of the electrode unit plate is less than π.

[0011] Furthermore, an expanded channel and a narrow channel are formed in the channel corresponding to the concave portion and the convex portion, respectively, and the width of the narrow channel is greater than or equal to the diameter of the discharge electrode.

[0012] Furthermore, the two relatively arranged dust collecting electrodes distributed on both sides of the discharge electrode are set as a group. Along the width direction of the dust removal box, the electrode group includes multiple groups of dust collecting electrodes, and the two groups of dust collecting electrodes are staggered along the exhaust gas conveying direction, so that an air guide channel is formed between the concave portion of one group and the convex portion of the other group.

[0013] Furthermore, a first air guide hole and a second air guide hole are provided on the surface wall of the electrode unit plate corresponding to the air guide channel. The first air guide hole and the second air guide hole are both connected to the air guide channel, and the first air guide hole points to the discharge electrode, and the second air guide hole points to the surface of the electrode unit plate.

[0014] Furthermore, an air supply main is fixedly provided on the outer wall of the dust removal box, and the air supply main is connected to an external air supply device. An air supply branch is provided inside the dust removal box corresponding to each group of dust collecting electrodes. One end of the air supply branch is connected to the air supply main, and the other end is connected to a plurality of air guide channels, so that the air flow in the air supply main can be guided into the air guide channels through the air supply branch, and a switch valve is installed at the connection between the air supply main and the air supply branch, which is used to control the corresponding air supply branch to be connected to the air supply main.

[0015] Furthermore, a plurality of wind balancing baffles are provided in the air inlet cone, and an air inlet duct corresponding to the number of the channels is formed between the plurality of wind balancing baffles. The wind balancing baffles separate the exhaust gas entering the air inlet cone into multiple airflows, and guide them to the multiple channels respectively through the air inlet ducts.

[0016] Furthermore, two groups of air balancing orifice plates are provided in the air inlet duct, and a plurality of through holes distributed in a matrix are opened on the air balancing orifice plates, and the number or aperture of the through holes on the air balancing orifice plates increases step by step along the conveying direction of the exhaust gas.

[0017] Furthermore, an air inlet channel is provided at the air inlet of the air inlet cone bucket, a linear drive is installed on the air inlet channel, a baffle driven by the linear drive is installed inside the air inlet channel, the baffle is constructed as a rectangular plate, and the size of the baffle is equal to the size at the inlet of the air inlet channel, and when the baffle is at the air inlet of the air inlet channel, it can close the air inlet channel, and the linear drive is configured to drive the baffle to move in the air inlet channel and close one of the air inlets.

[0018] Furthermore, it includes an electrode holding frame and a rapper, wherein the electrode holding frame is arranged above and below the discharge electrode and connects multiple discharge electrodes so that the discharge electrodes are at set positions in the channel, and the rapper is arranged in the dust removal box and is used to knock the discharge electrodes.

[0019] The beneficial effects achieved by the present invention are as follows:

[0020] Compared with the structure of the existing flat dust collecting plate, under the condition of the same length, the surface area of ​​the dust collecting electrode is increased, which can absorb more dust particles. Moreover, since the width of the channel changes, the impact force of the exhaust gas flow on the dust collecting electrode plate surface is smaller when it flows, which can reduce the problem of secondary dust flying during cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the three-dimensional structure of an electrostatic precipitator for waste gas treatment proposed in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the internal structure of an electrostatic precipitator for waste gas treatment according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of an electrostatic precipitator for waste gas treatment proposed in an embodiment of the present invention, viewed from above;

[0024] Figure 4 A schematic diagram of the three-dimensional structure of an electrode group according to an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of a partially enlarged structure of an electrode group according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic structural diagram of the first air guide hole guiding air to the discharge electrode in the electrode group in the dust-cleaning state according to an embodiment of the present invention;

[0027] Figure 7 The present invention provides a structural schematic diagram of the first air guide hole in the electrode group guiding air to the dust collecting electrode in the dust cleaning state.

[0028] Among them, 10, dust removal box; 11, air inlet cone hopper; 111, air inlet channel; 12, exhaust cone hopper; 121, exhaust channel; 13, ash hopper; 131, ash discharge channel; 132, discharge valve; 14, air distribution hole plate; 15, air distribution baffle; 151, air inlet duct; 20, electrode group; 200, channel; 21, dust collecting electrode; 210, air guide channel; 211, electrode unit plate; 2111, first air guide hole; 2112, second air guide hole; 212, concave part; 213, convex part; 22, discharge electrode; 30, electrode holding frame; 40, rapper; 50, air supply main pipe; 51, air supply branch pipe; 60, linear drive; 61, baffle.

[0029] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.

[0031] In the description of the embodiments, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments.

[0032] An embodiment of the present invention provides an electrostatic precipitator for waste gas treatment, which aims to solve the problem of secondary dust generation when cleaning the electrode group 20. The device mainly includes a dust removal box 10, an electrode group 20 and a rapper 40.

[0033] like Figure 1 and Figure 2 As shown, along the conveying direction of the exhaust gas, an air inlet cone 11 and an exhaust cone 12 are respectively provided at both ends of the dust removal box 10, and an ash hopper 13 is fixed at the bottom of the dust removal box 10. The electrode group 20 is arranged inside the dust removal box 10, between the air inlet cone 11 and the exhaust cone 12, and is electrically connected to the external power supply device.

[0034] In some embodiments, the dust removal box 10 is configured as a hollow rectangular box body, the air inlet conical hopper 11, the air outlet conical hopper 12 and the ash hopper 13 are all configured as frustum of a pyramid structures. An air inlet channel 111 is provided at the air inlet of the air inlet conical hopper 11 for connecting an external exhaust pipe. An air outlet channel 121 is provided at the air outlet of the air outlet conical hopper 12, and the dust-removed gas is discharged by connecting the air outlet channel 121 with an external pipe. A dust discharge channel 131 is provided at the bottom of the ash hopper 13, and a discharge valve 132 is installed on the dust discharge channel 131. After the dust-containing waste gas enters the dust removal box 10 from the air inlet conical hopper 11, it is dust-removed by the electrode group 20, and then the filtered gas is discharged from the air outlet conical hopper 12.

[0035] As Figure 3 and Figure 4 shown, the electrode group 20 includes a plurality of dust collection electrodes 21 parallel to the waste gas conveying direction. Channels 200 for the waste gas to pass through are formed between the dust collection electrodes 21, and discharge electrodes 22 are provided inside the channels 200.

[0036] Among them, the dust collection electrode 21 includes a plurality of electrode unit plates 211 connected end to end, and a plurality of alternately distributed concave parts 212 and convex parts 213 are formed by the plurality of electrode unit plates 211 along the waste gas conveying direction. In some embodiments, the electrode unit plate 211 includes, but is not limited to, a plate having concave parts 212 and convex parts 213 and having a cross-section in the shape of an arc, a broken line or a "匚" shape, etc., so that the channels 200 between the dust collection electrodes 21 show changes in the width direction, such as regular or irregular changes from wide to narrow or from narrow to wide.

[0037] Thus, compared with the structure of the existing flat dust collection plate, the surface area of the dust collection electrode 21 is increased under the same length, and more dust particles can be adsorbed. Moreover, due to the change in the width of the channels 200, when the waste gas flows, the impact force on the surface of the dust collection electrode 21 is smaller, and the problem of secondary dust flying during cleaning can be alleviated. <900000>

[0038] As Figure 3 and Figure 4 shown, the electrode unit plate 211 is configured as a plate with a circular arc cross-section. A plurality of discharge electrodes 22 are provided along the waste gas conveying direction, and each discharge electrode 22 is arranged at the axis position of the electrode unit plate 211, and the cross-sectional radian of the electrode unit plate 211 is less than π.

[0039] In this way, the distance between the discharge electrode 22 and the electrode unit plate 211 is consistent at all locations, the electric field strength at all locations between the discharge electrode 22 and the dust collecting electrode 21 is almost consistent, and the charged particles in the channel 200 are subjected to similar electric field forces, so they can be evenly dispersed to all locations on the surface of the electrode unit plate 211. However, the dust collecting plate with a flat-plate structure has an inconsistent distance from the discharge electrode 22, and the electric field force is also uneven.

[0040] Furthermore, an expansion channel and a narrow channel are formed in the channel 200 corresponding to the concave portion 212 and the convex portion 213, respectively. The width of the narrow channel is greater than or equal to the diameter of the discharge electrode 22. In this way, when the exhaust gas flows in the channel 200, it will pass through the expansion channel and the narrow channel in sequence. The dust particles in the exhaust gas will adhere to the surface of the electrode unit plate 211 in the expansion channel, and the width of the airflow is the width of the narrow channel, that is, the airflow is difficult to impact the surface of the electrode unit plate 211. Then, the charged particles in the airflow move toward the electrode unit plate 211 under the action of the electric field force. In this way, the problem of secondary dust flying during cleaning can be alleviated.

[0041] Furthermore, two relatively arranged dust collecting electrodes 21 distributed on both sides of the discharge electrode 22 are set as a group. Along the width direction of the dust removal box 10, the electrode group 20 includes multiple groups of dust collecting electrodes 21, and in order to make the structure of the dust collecting electrode 21 more compact, the two groups of dust collecting electrodes 21 are staggered along the exhaust gas conveying direction, so that an air guide channel 210 is formed between the concave portion 212 of one group and the convex portion 213 of the other group.

[0042] like Figure 1 and Figure 2 As shown, in order to provide airflow into the air guide channel 210 , an air supply main pipe 50 is fixedly provided on the outer wall of the dust removal box 10 . The air supply main pipe 50 is connected to an external air supply device, and the air supply device can provide compressed gas to the air supply main pipe 50 .

[0043] Furthermore, an air supply branch pipe 51 is provided inside the dust removal box 10 corresponding to each group of dust collecting electrodes 21. One end of the air supply branch pipe 51 is connected to the air supply main pipe 50, and the other end is connected to multiple air guide channels 210 in the same group, so that the airflow in the air supply main pipe 50 can be guided to the multiple air guide channels 210 in the same group through the air supply branch pipe 51.

[0044] In some embodiments, in order to independently control the jet status of different air supply branches 51 according to the cleaning requirements of different groups of dust collecting electrodes 21, a switch valve is installed at the connection between the main air supply pipe 50 and the air supply branch pipe 51, which is used to control the corresponding air supply branch pipe 51 to be connected to the main air supply pipe 50, wherein the switch valve can be an electromagnetic valve. When the electromagnetic valve is opened, the compressed gas can be transported from the main air supply pipe 50 to the corresponding air supply branch pipe 51, and transmitted to multiple air guide channels 210 through the air supply branch pipe 51.

[0045] like Figure 5 As shown, in order to use compressed gas to remove dust attached to the surface of the electrode unit plate 211 and the discharge electrode 22, a first air guide hole 2111 and a second air guide hole 2112 are opened on the surface wall of the electrode unit plate 211 corresponding to the air guide channel 210, and the first air guide hole 2111 and the second air guide hole 2112 are both connected to the air guide channel 210.

[0046] Among them, the first air guide hole 2111 is constructed as a circular tube or a rectangular tube with a certain length, and the first air guide hole 2111 points to the discharge electrode 22, and the second air guide hole 2112 is constructed as a circular tube or a rectangular tube with a certain length, and the second air guide hole 2112 points to the surface of the electrode unit plate 211.

[0047] So, like Figure 6 As shown, after the compressed gas is introduced into the air guide channel 210, the compressed gas will be guided to the surface of the discharge electrode 22 through the first air guide hole 2111. The direction of the air flow blows toward the surface of the discharge electrode 22 from all sides, impacting the dust on the surface of the discharge electrode 22 and blowing the dust off the surface of the discharge electrode 22. Figure 7 As shown, after the compressed gas is introduced into the air guide channel 210, the compressed gas will be guided to the surface of the electrode unit plate 211 through the second air guide hole 2112, impacting the dust on the surface of the discharge electrode 22. The direction of the airflow is from both sides toward the concave portion 212 of the electrode unit plate 211, blowing off the dust accumulated on the surface of the electrode unit plate 211.

[0048] like Figure 2 、 Figure 3 and Figure 4 As shown, in order to evenly distribute the exhaust gas entering the air inlet cone 11 into multiple channels 200 according to the number of channels 200, a plurality of wind balancing baffles 15 are provided in the air inlet cone 11, and air inlet ducts 151 corresponding to the number of channels 200 are formed between the multiple wind balancing baffles 15. The wind balancing baffles 15 separate the exhaust gas entering the air inlet cone 11 into multiple airflows, and guide them to multiple channels 200 through the air inlet ducts 151 respectively. In this way, the single exhaust gas entering the air inlet cone 11 can be evenly divided into multiple groups of exhaust gases according to the number of channels 200, so that the amount of exhaust gas in each channel 200 is almost consistent, ensuring uniformity.

[0049] Furthermore, in order to make the exhaust gas in a single air inlet duct 151 evenly distributed in the longitudinal direction, two groups of air balancing plates 14 are provided in each air inlet duct 151. The air balancing plates 14 are provided with a plurality of through holes distributed in a matrix shape, and along the conveying direction of the exhaust gas, the number or aperture of the through holes on the air balancing plates 14 increases step by step. In this way, the exhaust gas in the air inlet duct 151 is evenly distributed in the longitudinal direction, and the exhaust gas in the channel 200 is also evenly distributed in the height direction, so as to make the dust evenly adhere to the surface of the electrode unit plate 211.

[0050] like Figure 1-Figure 3 As shown, an air inlet channel 111 is provided at the air inlet of the air inlet cone 11, and a linear drive 60 is installed on the air inlet channel 111. A baffle 61 that can be driven by the linear drive 60 is installed inside the air inlet channel 111. The baffle 61 is constructed as a rectangular plate, and the size of the baffle 61 is equal to the size at the inlet of the air inlet duct 151, and when the baffle 61 is at the air inlet of the air inlet duct 151, it can close the air inlet duct 151. The linear drive 60 is configured to drive the baffle 61 to move in the air inlet channel 111 and close one of the air inlets 151.

[0051] In some embodiments, the linear actuator 60 may use an electric screw slide mechanism to drive the baffle 61 mounted on the slide to move within the air inlet channel 111. By adjusting the position of the baffle 61, a certain air inlet channel 151 may be closed, or when the baffle 61 is placed outside the air inlet channel 111 ( Figure 3 ), fully open the air inlet duct 151.

[0052] When cleaning the dust on the surface of the electrode group 20, each electrode group 20 can be cleaned separately in a certain order to maintain the normal operation of the dust removal system. The linear drive 60 can be used to drive the baffle 61 to close the air inlet 151 of one of the electrode groups 20 that needs to be cleaned, so that the exhaust gas does not enter the corresponding channel 200. At this time, the dust is cleaned by introducing compressed gas into the air guide channel 210 or by using the rapper 40 to knock on the discharge electrode 22. In this way, the problem of secondary dust can be completely avoided.

[0053] The device also includes an electrode holding frame 30 and a rapper 40. The rapper 40 is arranged in the dust removal box 10. The electrode holding frame 30 is arranged above and below the discharge electrode 22 and is connected to multiple discharge electrodes 22 so that the discharge electrode 22 is in a set position in the channel 200, that is, the discharge electrode 22 is in the axial position of the arc electrode unit plate 211, ensuring that the distance between the discharge electrode 22 and the surface of the arc electrode unit plate 211 is consistent, improving the uniformity of the electric field distribution, and facilitating the uniform adsorption of dust on the surface of the electrode unit plate 211. After the dust on the discharge electrode 22 gathers to a certain thickness, the rapper 40 strikes the electrode holding frame 30, so that the vibration of the electrode holding frame 30 is transmitted to the discharge electrode 22, shaking off the dust on the discharge electrode 22, causing the dust to fall into the ash hopper 13 and can be discharged by opening the discharge valve 132.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0055] The above description of the embodiment is non-limiting. The drawings show only one embodiment, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the invention, designs a similar structure and embodiment without inventiveness, they shall fall within the scope of protection.

Claims

1. An electrostatic precipitator for waste gas treatment, characterized in that: include: A dust removal box (10), wherein an air inlet cone hopper (11) and an air exhaust cone hopper (12) are respectively provided at both ends of the dust removal box (10) along the conveying direction of the exhaust gas, and an ash hopper (13) is fixed at the bottom of the dust removal box (10); An electrode group (20) is arranged inside the dust removal box (10) and located between the air inlet cone (11) and the air outlet cone (12); The electrode group (20) includes a plurality of dust collecting electrodes (21) parallel to the exhaust gas conveying direction, a channel (200) for the exhaust gas to pass through is formed between the dust collecting electrodes (21), a discharge electrode (22) is provided inside the channel (200), the dust collecting electrode (21) includes a plurality of electrode unit plates (211) connected end to end, and the plurality of electrode unit plates (211) form a plurality of alternately distributed concave portions (212) and convex portions (213) along the exhaust gas conveying direction, the electrode unit plates (211) are constructed as plates with a circular arc cross section, an expanded channel and a narrow channel are formed in the channel (200) corresponding to the concave portions (212) and the convex portions (213), respectively, and the width of the narrow channel is equal to the diameter of the discharge electrode (22); The dust collecting electrodes (21) are staggeredly distributed along the exhaust gas conveying direction, so that an air guide channel (210) is formed between the concave portion (212) and the convex portion (213); the dust removal box (10) is provided with an air supply main pipe (50) connected to an external air supply device, and the air supply main pipe (50) is connected to the air guide channel (210) through an air supply branch pipe (51); A first air guide hole (2111) and a second air guide hole (2112) are provided on the surface wall of the electrode unit plate (211) at locations corresponding to the air guide channel (210); the first air guide hole (2111) and the second air guide hole (2112) are both connected to the air guide channel (210); the first air guide hole (2111) points to the discharge electrode (22), and the second air guide hole (2112) points to the surface of the electrode unit plate (211).

2. The electrostatic precipitator for waste gas treatment according to claim 1, characterized in that: A plurality of discharge electrodes (22) are provided along the exhaust gas conveying direction, and each discharge electrode (22) is arranged at an axial position of the electrode unit plate (211), and the cross-sectional curvature of the electrode unit plate (211) is less than π.

3. The electrostatic precipitator for waste gas treatment according to claim 2, characterized in that: The two dust collecting electrodes (21) arranged opposite to each other and distributed on both sides of the discharge electrode (22) are arranged as a group. Along the width direction of the dust removal box (10), the electrode group (20) includes multiple groups of the dust collecting electrodes (21), and the two groups of the dust collecting electrodes (21) are staggered along the exhaust gas conveying direction, so that an air guide channel (210) is formed between the concave portion (212) of one group and the convex portion (213) of the other group.

4. The electrostatic precipitator for waste gas treatment according to claim 1, characterized in that: The air supply main pipe (50) is fixedly provided on the outer wall of the dust removal box (10), and the air supply main pipe (50) is connected to an external air supply device. An air supply branch pipe (51) is provided inside the dust removal box (10) corresponding to each group of the dust collecting electrodes (21). One end of the air supply branch pipe (51) is communicated with the air supply main pipe (50), and the other end is communicated with a plurality of the air guide channels (210), so that the air flow in the air supply main pipe (50) can be guided into the air guide channels (210) through the air supply branch pipe (51), and a switch valve is installed at the connection between the air supply main pipe (50) and the air supply branch pipe (51) for controlling the corresponding air supply branch pipe (51) to be connected to the air supply main pipe (50).

5. The electrostatic precipitator for waste gas treatment according to claim 1, characterized in that: A plurality of wind-distributing baffles (15) are provided in the air inlet cone (11), and air inlet ducts (151) corresponding to the number of the channels (200) are formed between the plurality of wind-distributing baffles (15). The wind-distributing baffles (15) separate the exhaust gas entering the air inlet cone (11) into a plurality of air flows, and guide the exhaust gas into the plurality of channels (200) through the air inlet ducts (151).

6. The electrostatic precipitator for waste gas treatment according to claim 5, characterized in that: Two groups of air balancing orifice plates (14) are provided in the air inlet duct (151), and a plurality of through holes distributed in a matrix are provided on the air balancing orifice plates (14), and the number or aperture of the through holes on the air balancing orifice plates (14) increases step by step along the conveying direction of the exhaust gas.

7. The electrostatic precipitator for waste gas treatment according to claim 5, characterized in that: An air inlet channel (111) is provided at the air inlet of the air inlet cone (11), a linear driver (60) is installed on the air inlet channel (111), a baffle (61) driven by the linear driver (60) is installed inside the air inlet channel (111), the baffle (61) is constructed as a rectangular plate, and the size of the baffle (61) is equal to the size of the inlet of the air inlet channel (151), and when the baffle (61) is at the air inlet of the air inlet channel (151), the air inlet channel (151) can be closed, and the linear driver (60) is configured to drive the baffle (61) to move in the air inlet channel (111) and close one of the air inlet channels (151).

8. The electrostatic precipitator for waste gas treatment according to claim 1, characterized in that: The invention comprises an electrode holding frame (30) and a rapper (40), wherein the electrode holding frame (30) is arranged above and below the discharge electrode (22) and connects a plurality of the discharge electrodes (22) so that the discharge electrodes (22) are located at set positions in the channel (200), and the rapper (40) is arranged in the dust removal box (10) and is used to strike the discharge electrodes (22).

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