Rapping device for an electrostatic precipitator and electrostatic precipitator

Abstract

This invention belongs to the field of environmental protection equipment technology, and provides an electrostatic precipitator rapping device and an electrostatic precipitator. The device uses a first drive component to drive the rapping hammer to complete the lifting and lowering rapping action, enabling basic dust removal of the anode plate. The repulsive action between the corresponding first and second magnets provides an adjustable auxiliary force for the rapping head, breaking through the limitation of fixed rapping force in traditional rapping devices. By adjusting the repulsive force between the magnets using the adjustment component, combined with the periodic control of the controller, the rapping force can be periodically varied. Different intensities of rapping force can be alternately output within a dust removal cycle. This allows for the removal of highly resistive dust with strong adhesion through high-intensity rapping, and the removal of loose, low-resistivity dust through low-intensity rapping, while significantly reducing the probability of secondary dust generation. This approach balances dust removal efficiency and emission control, making it suitable for complex and variable industrial flue gas conditions.

Description

Technical Field

[0001] This invention belongs to the field of environmental protection equipment technology, specifically relating to an electrostatic precipitator rapping device and an electrostatic precipitator. Background Technology

[0002] During the continuous operation of an electrostatic precipitator, the surface of the anode plate will continuously accumulate the captured dust, gradually forming a dust layer of a certain thickness. The continuous accumulation of this dust layer will greatly affect the dust removal performance of the precipitator. Therefore, it is necessary to regularly clean the dust layer on the surface of the anode plate to ensure the efficient and stable operation of the electrostatic precipitator.

[0003] Currently, the most widely used and technologically mature method for cleaning anode plates in the industry is mechanical rapping cleaning, which uses a flexible arm hammer-type rapping cleaning device at its core. During the cleaning operation, the rapping mechanism drives the rapping hammer to rise to accumulate gravitational potential energy, and then releases the rapping hammer to fall. The impact force generated by its own gravity strikes the impact-bearing part of the anode plate, and the impact acceleration generated by the impact is transmitted to the surface of the anode plate, causing the dust layer attached to the plate to overcome its adhesion and fall off, eventually falling into the ash hopper at the bottom of the equipment.

[0004] However, in actual industrial applications, the aforementioned conventional flexible arm hammer-type rapping dust removal device has insurmountable technical defects: the weight of the rapping hammer and the rapping stroke of the conventional rapping dust removal device are fixed during the design and manufacturing stage. Therefore, during the entire life cycle of the equipment, the output rapping intensity and impact force are constant values. Under complex and variable industrial flue gas conditions, there is a serious technical bottleneck in which the dust removal effect and secondary dust control cannot be simultaneously achieved, specifically in the following aspects: When the flue gas treated by an electrostatic precipitator mainly consists of low-resistivity dust, the dust layer deposited on the anode plate surface is thin, loosely structured, and has weak adhesion to the plate. If the existing technology of constant high-intensity rapping is used, the excessive impact acceleration will cause the originally loose dust layer to shatter and disperse instantly, directly generating serious secondary dust problems. Secondary dust will cause the dust that has been captured and separated into gas and solid phases to re-enter the mainstream flue gas, which will not only directly and significantly reduce the actual dust removal efficiency of the electrostatic precipitator, leading to an increase in the concentration of dust emissions and failure to meet environmental emission requirements, but also increase the load on subsequent flue gas treatment stages, increasing the operating costs and maintenance difficulty of the entire flue gas treatment system.

[0005] When the flue gas treated by an electrostatic precipitator mainly consists of high-resistivity dust, this type of dust is characterized by its fine particles, strong adhesion to the anode plate surface, and high dust layer compaction. Conventional, constant, low-intensity rapping cannot provide sufficient impact acceleration to overcome the electrostatic adhesion between the dust and the anode plate, as well as the cohesive force within the dust layer, thus failing to achieve effective and complete dust removal. Under long-term operation, the dust layer on the anode plate surface will continue to thicken and caking, further exacerbating the back corona phenomenon and causing a continuous decline in the dust removal performance of the electrostatic precipitator. In severe cases, it may even cause the equipment to fail to meet operating standards.

[0006] In actual industrial production, the flue gas to be treated under most operating conditions contains both low-resistivity and high-resistivity dust, and the anode plate surface is simultaneously covered with dust layers of different physicochemical properties and adhesion states. In this situation, if high-intensity rapping parameters are used to ensure effective removal of high-resistivity dust, it will inevitably lead to severe secondary dust generation from the low-resistivity dust on the anode plate surface, significantly reducing the overall dust removal efficiency of the equipment. Conversely, if low-intensity rapping parameters are used to avoid secondary dust generation and control emission concentration, it will be impossible to effectively remove the strongly adhering high-resistivity dust, resulting in continuous dust accumulation on the anode plate and a continuous decline in the equipment's dust removal performance. Summary of the Invention

[0007] The present invention provides a rapping device for an electrostatic precipitator and an electrostatic precipitator, which aims to solve the technical problems described in the background art above.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, embodiments of the present invention provide a rapping device for an electrostatic precipitator, comprising: Multiple vibratory hammers are arranged at intervals along a first direction. Each vibratory hammer includes a mounting frame, a connecting frame, and a vibrating head. One end of the connecting frame is rotatably connected to the mounting frame, and the other end is fixedly connected to the vibrating head. The first drive assembly is fixedly connected to the mounting bracket and is used to drive the mounting bracket to rotate around the first rotating shaft, thereby causing the connecting bracket and the vibrating head to rotate upward. After passing the balance point, the connecting bracket and the vibrating head rotate downward under the action of gravity, causing the vibrating head to strike the anode plate assembly. Multiple first magnets are provided, each corresponding to a vibrating head. The first magnets are located on the side of the balance point facing away from the first rotating shaft and are fixedly connected to the vibrating head. The second magnet is located on the side of the balance point opposite to the first rotating shaft, spaced apart from the vibrating head, and repulsed by the first magnet. An adjustment component, connected to the second magnet, is used to drive the second magnet to move relative to the first magnet, thereby adjusting the repulsive force between the second magnet and the first magnet; A controller, electrically connected to the regulating component, is configured to: The adjustment component is controlled to periodically adjust the repulsive force between the second magnet and the first magnet, so that the vibration force of the rapping head on the anode plate assembly changes periodically.

[0009] In conjunction with the first aspect, in one possible implementation of the electrostatic precipitator rapping device provided by the present invention, the balance point is located on the upper side of the first rotating shaft.

[0010] In conjunction with the first aspect, in one possible implementation of the electrostatic precipitator rapping device provided by the present invention, the adjusting component includes: A support frame is provided on the upper side of the first rotating shaft, and the bottom is fixedly connected to the second magnet; The support frame is rotatably fitted to both ends of the bearing frame; The second drive assembly is connected to the support frame, and its power output end is connected to the carrier frame. It is used to drive the carrier frame to rotate and adjust the angle between the second magnet and the first magnet. The controller is electrically connected to the second drive component and is configured as follows: The second drive component is controlled to drive the support frame to oscillate periodically.

[0011] In conjunction with the first aspect, in one possible implementation of the electrostatic precipitator rapping device provided by the present invention, the top of the support frame along the cross section perpendicular to the first direction is conical.

[0012] In conjunction with the first aspect, in one possible implementation of the electrostatic precipitator rapping device provided by the present invention, there are multiple second magnets, and each of the multiple second magnets corresponds one-to-one with the first magnet.

[0013] In conjunction with the first aspect, in one possible implementation of the electrostatic precipitator rapping device provided by the present invention, the adjusting component further includes a lifting component, the power output end of which is connected to the support frame to drive the support frame to rise or fall. The controller is electrically connected to the lifting assembly and is configured as follows: Controlling the lifting assembly drives the support frame to rise or fall, adjusting the distance between the second magnet and the first magnet, thereby adjusting the peak value of the vibration force.

[0014] In conjunction with the first aspect, in one possible implementation of the electrostatic precipitator rapping device provided by the present invention, the adjusting component further includes a slide block, which is slidably engaged with the support frame and has a degree of freedom to slide along the extension direction of the support frame; The lifting assembly includes two third drive assemblies, which are respectively located at both ends of the support frame. The power output end of one third drive assembly is hinged to the support frame, and the power output end of the other third drive assembly is hinged to the slide block. The controller is electrically connected to the third drive component and is configured as follows: The two third drive components are controlled respectively to drive the support frame to rise or fall, thereby adjusting the peak value of the vibration force; or the tilt angle of the support frame is adjusted so that the vibration force of the multiple vibration heads is distributed in a gradient.

[0015] In conjunction with the first aspect, in one possible implementation of the electrostatic precipitator rapping device provided by the present invention, the side of the rapping head that contacts the anode plate assembly is arc-shaped.

[0016] In conjunction with the first aspect, in one possible implementation of the electrostatic precipitator rapping device provided by the present invention, the first driving assembly includes a motor assembly and a drive shaft, the drive shaft is fixedly connected to the mounting bracket, and the power output end of the motor assembly is connected to the drive shaft to drive the drive shaft to rotate.

[0017] Secondly, embodiments of the present invention provide an electrostatic precipitator, including the aforementioned electrostatic precipitator rapping device.

[0018] The beneficial effects of the electrostatic precipitator rapping device and electrostatic precipitator provided by the present invention are as follows: Compared with the prior art, the electrostatic precipitator rapping device and electrostatic precipitator provided by the present invention drive the rapping hammer to complete the lifting and falling rapping action through the first driving component, which can realize the basic dust removal operation of the anode plate; through the repulsive action of the first magnet and the second magnet that are set one-to-one, an adjustable auxiliary effect is provided for the rapping force of the rapping head, breaking through the limitation of the fixed rapping force of the traditional rapping device; by adjusting the repulsive force between the magnets through the adjustment component, and in conjunction with the periodic control of the controller, the periodic change of the rapping force can be realized, and different intensity rapping forces can be output alternately within a dust removal cycle. It can remove the highly resistive dust with strong adhesion through high intensity rapping, and remove the loose low resistive dust through low intensity rapping, while greatly reducing the probability of secondary dust generation, taking into account both dust removal effect and emission control, and adapting to complex and variable industrial flue gas conditions; multiple sets of rapping hammers are arranged at intervals along the first direction, which can improve the coverage and efficiency of the dust removal operation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the electrostatic precipitator rapping device provided in an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of part A in the image; Figure 3 for Figure 1 Enlarged view of part B in the image.

[0020] Explanation of reference numerals in the attached figures: 10. Vibratory hammer; 11. Mounting bracket; 12. Connecting bracket; 13. Vibratory head; 21. Motor assembly; 22. Drive shaft; 30. First magnet; 40. Second magnet; 51. Bearing frame; 52. Support frame; 53. Second drive assembly; 54. Slide; 55. Third drive assembly. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is actually illustrative only and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0025] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0026] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0027] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0028] Please refer to the following: Figures 1 to 3The present invention will now describe the electrostatic precipitator rapping device and the electrostatic precipitator provided. The electrostatic precipitator rapping device includes multiple rapping heads 13, a first driving assembly, multiple first magnets 30, second magnets 40, an adjusting assembly, and a controller. Multiple rapping hammers 10 are spaced apart along a first direction. Each rapping hammer 10 includes a mounting frame 11, a connecting frame 12, and a rapping head 13. One end of the connecting frame 12 is rotatably connected to the mounting frame 11, and the other end is fixedly connected to the rapping head 13. The first driving assembly is fixedly connected to the mounting frame 11 and drives the mounting frame 11 to rotate around a first rotating axis, causing the connecting frame 12 and the rapping head 13 to rotate upwards. After passing the equilibrium point, the connecting frame 12 and the rapping head 13 rotate downwards under the action of gravity, causing the rapping head 13 to strike the anode plate assembly. The assembly includes: multiple first magnets 30 corresponding one-to-one with the vibrating head 13; the first magnet 30 is located on the side of the balance point facing away from the first rotating shaft and is fixedly connected to the vibrating head 13; second magnets 40 are located on the side of the balance point facing away from the first rotating shaft, spaced apart from the vibrating head 13, and repel the first magnets 30; an adjustment component is connected to the second magnets 40 and is used to drive the second magnets 40 to move relative to the first magnets 30, adjusting the repulsive force between the second magnets 40 and the first magnets 30; a controller is electrically connected to the adjustment component and is configured to control the adjustment component to periodically adjust the repulsive force between the second magnets 40 and the first magnets 30, so that the vibrating force of the vibrating head 13 on the anode plate assembly changes periodically.

[0029] Specifically, the first magnet 30 is located inside the vibrating head 13 to protect it from falling off or being damaged due to vibration. The controller is a PLC device or a computer host, etc.

[0030] It should be noted that in this embodiment, the first direction can correspond to the arrangement direction of the anode plate assembly. Multiple sets of vibrating hammers 10 are arranged at intervals along this direction, which can adapt to the synchronous dust removal operation of multiple anode plates. The rotating connection structure between the connecting frame 12 and the mounting frame 11 allows the vibrating head 13 to have adaptive rotational freedom during lifting and falling, reducing the risk of motion jamming. The balance point is the critical position where the center of gravity of the vibrating hammer 10 passes directly above the first rotating shaft. After passing this position, the vibrating hammer 10 can fall autonomously towards the anode plate assembly under the action of gravity, without the need for the drive assembly to continuously provide power. Magnet 30 moves synchronously with the vibrating head 13, and its repulsive setting with the second magnet 40 can apply a corresponding force to the vibrating head 13 during its descent, changing the descent acceleration of the vibrating head 13. The adjustment component can adjust the position, angle, and other parameters of the second magnet 40, thereby changing the magnetic field distance and area between the two sets of magnets, and thus adjusting the magnitude of the repulsive force. The controller can send control commands to the adjustment component according to preset periodic parameters or real-time flue gas condition data to achieve periodic adjustment of the repulsive force, ultimately making the vibrating force of the vibrating head 13 exhibit corresponding periodic changes.

[0031] The beneficial effects of the electrostatic precipitator rapping device provided in this embodiment of the invention are as follows: Compared with the prior art, the electrostatic precipitator rapping device provided in this embodiment of the invention drives the rapping hammer 10 to complete the lifting and falling rapping action through the first driving component, which can realize the basic dust removal operation of the anode plate; through the repulsive action of the first magnet 30 and the second magnet 40 arranged one-to-one, an adjustable auxiliary effect is provided for the rapping force of the rapping head 13, breaking through the limitation of the fixed rapping force of the traditional rapping device; by adjusting the repulsive force between the magnets through the adjustment component, and in conjunction with the periodic control of the controller, the periodic change of the rapping force can be realized, and different intensity rapping forces can be output alternately within a dust removal cycle. It can remove the highly resistive dust with strong adhesion through high intensity rapping, and remove the loose low resistive dust through low intensity rapping, while greatly reducing the probability of secondary dust generation, taking into account both dust removal effect and emission control, and adapting to complex and variable industrial flue gas conditions; multiple sets of rapping hammers 10 are arranged at intervals along the first direction, which can improve the coverage and efficiency of the dust removal operation. like Figure 1 and Figure 2 As shown, in a specific embodiment of the electrostatic precipitator rapping device provided in this invention, the balance point is located on the upper side of the first rotating shaft.

[0032] It should be noted that in this embodiment, the balance point is set on the upper side of the first rotating shaft, that is, in the area directly above the first rotating shaft. When the center of gravity of the vibrating hammer 10 moves to the balance point position with the lifting action, the gravitational torque of the vibrating hammer 10 is zero. After passing this position, gravity can drive the vibrating hammer 10 to rotate and fall towards the anode plate assembly. There is no need for the drive assembly to provide additional driving force, which can reduce the energy consumption of the drive assembly and make the falling action of the vibrating hammer 10 smoother.

[0033] In this embodiment, the balance point is set on the upper side of the first rotating shaft, allowing the vibratory hammer 10 to only need to overcome gravity during the lifting process. After passing the balance point, it can rely on gravity to complete its autonomous descent, simplifying the driving logic of the vibratory action and reducing the operating load and energy consumption of the drive components. At the same time, it ensures the stability of the falling stroke of the vibratory hammer 10, avoiding problems such as insufficient vibratory stroke or vibratory position deviation caused by the deviation of the balance point position, thus improving the stability of the vibratory operation. like Figure 1 and Figure 2 As shown, in a specific embodiment of the electrostatic precipitator rapping device provided in this invention, the adjustment component includes a carrier frame 51, a support frame 52, and a second drive component 53. The carrier frame 51 is located on the upper side of the first rotating shaft, and the bottom is fixedly connected to the second magnet 40. The support frame 52 is rotatably engaged with both ends of the carrier frame 51. The second drive component 53 is connected to the support frame 52, and its power output end is connected to the carrier frame 51 to drive the carrier frame 51 to rotate and adjust the angle between the second magnet 40 and the first magnet 30.

[0034] The controller is electrically connected to the second drive component 53 and is configured as follows: Control the second drive component 53 to drive the support frame 51 to swing periodically.

[0035] Specifically, the second drive component 53 is an existing device capable of controlling the rotation angle, such as a servo motor or a stepper motor.

[0036] It should be noted that in this embodiment, the support frame 51 can provide a stable mounting carrier for the second magnet 40, ensuring that the installation positions of multiple sets of second magnets 40 are relatively uniform; the support frame 52 can support both ends of the support frame 51 and provide the support frame 51 with the freedom of rotation; the second drive component 53 can drive the support frame 51 to rotate around its own axis, thereby adjusting the relative angle between the second magnet 40 and the corresponding first magnet 30, changing the magnetic field area facing each other between the two sets of magnets, and thus adjusting the magnitude of the repulsive force between the magnets; the controller can control the rotation angle, rotation frequency and rotation direction of the second drive component 53 to realize the periodic oscillation of the support frame 51, thereby making the repulsive force between the magnets exhibit periodic changes.

[0037] In this embodiment, through the cooperation of the carrier frame 51, the support frame 52 and the second drive component 53, the angle between the second magnet 40 and the first magnet 30 can be conveniently adjusted by rotating the carrier frame 51, thereby achieving flexible adjustment of the repulsive force. The structure is simple and the adjustment accuracy is high. By controlling the carrier frame 51 to swing periodically by the controller, the repulsive force can be periodically adjusted, thereby allowing the rapping force to achieve a smooth periodic change, avoiding impact damage to the anode plate caused by sudden changes in rapping force, and adapting to the adjustment requirements of the rapping force change cycle under different working conditions. The carrier frame 51 is set on the upper side of the first rotating shaft, which can be adapted to the lifting path of the rapping hammer 10, ensuring that the repulsive force between the magnets can effectively act on the falling process of the rapping head 13, improving the force transmission efficiency.

[0038] like Figure 1 and Figure 2 As shown, in a specific embodiment of the electrostatic precipitator rapping device provided in this invention, the top of the support frame 51 along the cross section perpendicular to the first direction is conical.

[0039] It should be noted that in this embodiment, the top of the cross section of the support frame 51 perpendicular to the first direction is set as a cone shape, which can reduce the deposition and accumulation of dust on the top of the support frame 51 and avoid affecting the rotation and adjustment accuracy of the support frame 51 due to excessive dust accumulation.

[0040] In this embodiment, the top of the cross-section of the support frame 51 is set to a cone shape, which can reduce the deposition of dust on the surface of the support frame 51, reduce the impact of dust accumulation on the rotational freedom of the support frame 51, reduce the frequency of operation and maintenance of the device, and extend the service life of the device.

[0041] like Figure 1 and Figure 2 As shown, in a specific embodiment of the electrostatic precipitator rapping device provided in this invention, there are multiple second magnets 40, and each of the multiple second magnets 40 corresponds to a first magnet 30.

[0042] It should be noted that in this embodiment, multiple second magnets 40 are set one-to-one with the first magnet 30, so that the first magnet 30 on each vibrating head 13 corresponds to a set of independent second magnets 40, ensuring that the vibration force adjustment of each set of vibrating hammers 10 can be achieved through the corresponding magnet set, avoiding mutual interference between the adjustment actions of multiple sets of vibrating hammers 10.

[0043] In this embodiment, by setting the second magnet 40 and the first magnet 30 in a one-to-one correspondence, the vibration force adjustment of each rapping head 13 can be ensured to be independent, and the vibration force of a single set of rapping hammers 10 can be precisely controlled to adapt to the differentiated dust removal needs of anode plates in different positions. At the same time, it can improve the control accuracy of the repulsive force between each set of magnets, avoid the problem of uneven repulsive force distribution when multiple sets of rapping hammers 10 share a set of second magnets 40, and improve the consistency and stability of vibration force adjustment.

[0044] like Figure 1 and Figure 2 As shown, in a specific embodiment of the electrostatic precipitator rapping device provided in this invention, the adjustment component further includes a lifting component. The power output end of the lifting component is connected to the support frame 52 and is used to drive the support frame 52 to rise or fall.

[0045] The controller is electrically connected to the lifting assembly and is configured as follows: Control the lifting component to drive the support frame 52 to rise or fall, adjust the distance between the second magnet 40 and the first magnet 30, and thus adjust the peak value of the vibration force.

[0046] It should be noted that in this embodiment, the lifting component can drive the support frame 52 to move vertically upward or downward. The movement of the support frame 52 can synchronously drive the carrier frame 51 and the second magnet 40 on the carrier frame 51 to move up and down synchronously, thereby changing the vertical distance between the second magnet 40 and the first magnet 30. The magnitude of the repulsive force between the magnets is related to the distance. By adjusting the distance, the maximum value of the repulsive force can be changed, thereby adjusting the maximum value of the auxiliary force received by the vibrating head 13 during its descent, and finally achieving the adjustment of the peak value of the vibrating force. The controller can send control commands to the lifting component according to the working conditions to precisely control the lifting stroke of the support frame 52, thereby achieving precise adjustment of the peak value of the vibrating force.

[0047] In this embodiment, the lifting assembly drives the support frame 52 and the carrier frame 51 to rise and fall, which allows for convenient adjustment of the distance between the two sets of magnets. This enables flexible adjustment of the peak value of the rapping force, further expanding the adjustable range of the rapping force and adapting to the dust removal needs of dust with more different physical and chemical properties. Through the precise control of the lifting assembly by the controller, the peak value of the rapping force can be precisely adjusted. The corresponding peak value of the rapping force can be matched according to the resistivity characteristics of the dust in the flue gas, which can improve the dust removal effect of high resistivity dust and avoid the secondary dust problem of low resistivity dust. The rotation adjustment of the lifting assembly and the carrier frame 51 can be coordinated to achieve independent adjustment of the rapping force change cycle and the peak value of the rapping force, improving the adaptability of the device to different working conditions.

[0048] like Figure 1 and Figure 3 As shown, in a specific embodiment of the electrostatic precipitator rapping device provided in this invention, the adjusting component further includes a slide 54, which is slidably engaged with the support frame 52 and has the freedom to slide along the extension direction of the support frame 51.

[0049] The lifting assembly includes two third drive assemblies 55, which are respectively located at both ends of the support frame 51. The power output end of one third drive assembly 55 is hinged to the support frame 52, and the power output end of the other third drive assembly 55 is hinged to the slide block 54.

[0050] The controller is electrically connected to the third drive component 55 and is configured as follows: The two third drive components 55 are controlled respectively to drive the support frame 51 to rise or fall, thereby adjusting the peak value of the rapping force; or the tilt angle of the support frame 51 is adjusted so that the rapping force of the multiple rapping heads 13 is distributed in a gradient.

[0051] It should be noted that the flue gas concentration in an electrostatic precipitator typically decreases gradually from the center to both sides; therefore, the degree of ash accumulation also gradually decreases from the center to both sides. The rapping devices provided in this embodiment are typically used in pairs and arranged symmetrically. The rapping head 13 with the greatest rapping force, i.e., the lower end of the support frame 51, is located in the middle of the dust collector, so that the rapping force of each rapping head 13 gradually decreases from the center to both sides.

[0052] In this embodiment, the slide 54 can slide along the extension direction of the support frame 52, providing appropriate displacement compensation for the tilt angle adjustment of the support frame 51, and avoiding jamming during the tilt adjustment of the support frame 51; the two third drive components 55 are respectively set at both ends of the support frame 51, and can independently control the lifting and lowering of both ends of the support frame 51; when the two third drive components 55 synchronously drive both ends of the support frame 51 to rise or fall, the overall horizontal lifting and lowering of the support frame 51 can be achieved, thereby adjusting the peak value of the vibration force; when there is a difference in the lifting and lowering stroke of the two third drive components 55, the two ends of the support frame 51 can form a height difference, thereby adjusting the tilt angle of the support frame 51, so that the distance between the second magnet 40 and the corresponding first magnet 30 at different positions on the support frame 51 forms a gradient difference, thereby making the vibration force of the vibration head 13 at different positions present a gradient distribution; the controller can send independent control commands to the two third drive components 55 respectively, precisely controlling the lifting and lowering stroke of the two drive components to achieve the corresponding adjustment function.

[0053] In this embodiment, through the cooperation of two independent third drive components 55 and slide 54, the overall horizontal lifting and tilt angle adjustment of the support frame 51 can be realized simultaneously. This allows for both overall adjustment of the peak value of the rapping force and gradient distribution adjustment of the rapping force of multiple rapping heads 13, further enhancing the adjustment flexibility of the device. By setting the gradient distribution of the rapping force, it can adapt to the differentiated ash accumulation state of anode plates at different positions within the same electric field, achieving precise ash removal of anode plates at different positions and improving the overall ash removal uniformity and effect. The independent control of the two third drive components 55 allows for a richer adjustment dimension of the rapping force, adapting to more complex flue gas conditions and ash accumulation states, further improving the stability and dust removal efficiency of the electrostatic precipitator during operation.

[0054] Specifically, the third drive component 55 is an electric actuator, but it can also be a hydraulic cylinder, a cylinder with stroke control, or other linear drive components that can control the stroke.

[0055] like Figure 1 and Figure 2 As shown, in a specific embodiment of the electrostatic precipitator rapping device provided in this invention, the side of the rapping head 13 that contacts the anode plate assembly is arc-shaped.

[0056] It should be noted that in this embodiment, the side of the vibrating head 13 that contacts the anode plate assembly is set to be arc-shaped, which allows the vibrating head 13 to form a surface contact with the impact-bearing part of the anode plate assembly, dispersing the contact stress during the impact process. At the same time, it can adapt to the rotation trajectory of the vibrating head 13 during its descent, ensuring the stability of the contact position during the impact process and avoiding the problem of impact deviation.

[0057] In this embodiment, the impact side of the rapping head 13 is set to be arc-shaped, which can disperse the contact stress during the impact process, reduce the wear of the rapping head 13 and the anode plate impact part, and extend the service life of the component; at the same time, it can ensure that the impact contact between the rapping head 13 and the anode plate is more stable, improve the transmission efficiency of impact acceleration, and ensure the stability of the dust removal effect; the arc-shaped contact surface can adapt to the rotation and falling trajectory of the rapping head 13, avoid the component deformation or breakage caused by rigid impact, and improve the reliability of the device operation.

[0058] like Figure 1 and Figure 2 As shown, in a specific embodiment of the electrostatic precipitator rapping device provided in this invention, the first driving component includes a motor assembly 21 and a drive shaft 22. The drive shaft 22 is fixedly connected to the mounting bracket 11, and the power output end of the motor assembly 21 is connected to the drive shaft 22 to drive the drive shaft 22 to rotate.

[0059] Specifically, the drive shaft 22 includes an insulating ceramic shaft and a bearing shaft (which is prior art and therefore not shown in the figure). One end of the insulating ceramic shaft is fixedly connected to the motor assembly 21, and the other end is fixedly connected to the bearing shaft for insulation. The bearing shaft is a metal shaft with good mechanical strength, and the vibrating hammers 10 are all mounted on the bearing shaft.

[0060] It should be noted that in this embodiment, the drive shaft 22 extends along the first direction, and the mounting brackets 11 of the multiple sets of vibrating hammers 10 are all fixedly connected to the drive shaft 22. The motor assembly 21 can drive the drive shaft 22 to rotate around its own axis, which coincides with the axis of the first rotating shaft, thereby synchronously driving the mounting brackets 11 of the multiple sets of vibrating hammers 10 to rotate synchronously. The motor assembly 21 can adopt a drive structure with speed adjustment function, which can adjust the rotation speed of the drive shaft 22 according to the working conditions, thereby adjusting the frequency of the vibrating operation.

[0061] In this embodiment, the synchronous driving of multiple sets of vibrating hammers 10 can be achieved through the cooperation of the motor assembly 21 and the drive shaft 22, so that the vibrating cycle of multiple sets of vibrating hammers 10 is consistent.

[0062] Based on the same inventive concept, embodiments of the present invention also provide an electrostatic precipitator, including the above-mentioned electrostatic precipitator rapping device.

[0063] It should be noted that in this embodiment, the electrostatic precipitator also includes supporting structures such as an anode plate assembly, a cathode wire assembly, a shell, and an ash hopper. The rapping device can be installed inside the shell and is set corresponding to the impact-bearing part of the anode plate assembly, which can perform periodic rapping and dust removal operations on the anode plate assembly. The controller of the rapping device can communicate with the main control system of the electrostatic precipitator and can adjust the operating parameters of the rapping device according to the real-time operating parameters of the electrostatic precipitator, flue gas operating parameters, and emission data.

[0064] The beneficial effects of the electrostatic precipitator provided in this embodiment of the invention are as follows: Compared with the prior art, the electrostatic precipitator provided in this embodiment of the invention, by configuring the above-mentioned rapping device, allows the electrostatic precipitator to achieve periodic adjustment and precise control of the rapping force, which can adapt to complex flue gas conditions containing both high and low resistivity dust, taking into account both dust removal effect and secondary dust control, thereby improving the dust removal efficiency and operational stability of the electrostatic precipitator; it can effectively alleviate dust caking and back corona phenomena on the surface of the anode plate, extend the stable operation cycle of the electrostatic precipitator, reduce the risk of exceeding flue gas emission standards, and at the same time reduce the operating load of subsequent flue gas treatment links, thereby reducing the operating cost of the entire flue gas treatment system.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rapping device for an electrostatic precipitator, characterized in that, include: Multiple vibratory hammers (10) are arranged at intervals along a first direction. Each vibratory hammer (10) includes a mounting frame (11), a connecting frame (12), and a vibratory head (13). One end of the connecting frame (12) is rotatably connected to the mounting frame (11), and the other end is fixedly connected to the vibratory head (13). The first drive assembly is fixedly connected to the mounting bracket (11) and is used to drive the mounting bracket (11) to rotate around the first rotating shaft, thereby driving the connecting bracket (12) and the vibrating head (13) to rotate upward. After the connecting bracket (12) and the vibrating head (13) pass the balance point, they rotate downward under the action of gravity, causing the vibrating head (13) to strike the anode plate assembly. Multiple first magnets (30) correspond one-to-one with the vibrating head (13). The first magnets (30) are located on the side of the balance point facing away from the first rotating shaft and are fixedly connected to the vibrating head (13). The second magnet (40) is located on the side of the balance point opposite to the first rotating shaft, spaced apart from the vibrating head (13), and repulsed by the first magnet (30); An adjustment component, connected to the second magnet (40), is used to drive the second magnet (40) to move relative to the first magnet (30) and adjust the repulsive force between the second magnet (40) and the first magnet (30); A controller, electrically connected to the regulating component, is configured to: The adjustment component is controlled to periodically adjust the repulsive force between the second magnet (40) and the first magnet (30), so that the vibration force of the rapping head (13) on the anode plate assembly changes periodically.

2. The electrostatic precipitator rapping device as described in claim 1, characterized in that, The balance point is located on the upper side of the first rotating shaft.

3. The electrostatic precipitator rapping device as described in claim 1, characterized in that, The adjustment component includes: The support frame (51) is located on the upper side of the first rotating shaft, and the bottom is fixedly connected to the second magnet (40). The support frame (52) is rotatably engaged with both ends of the bearing frame (51); The second drive assembly (53) is connected to the support frame (52), and its power output end is connected to the carrier frame (51) to drive the carrier frame (51) to rotate and adjust the angle between the second magnet (40) and the first magnet (30). The controller is electrically connected to the second drive component (53) and is configured to: Control the second drive component (53) to drive the support frame (51) to swing periodically.

4. The electrostatic precipitator rapping device as described in claim 3, characterized in that, The top of the support frame (51) along the section perpendicular to the first direction is conical.

5. The electrostatic precipitator rapping device as described in claim 3, characterized in that, There are multiple second magnets (40), and each of the multiple second magnets (40) corresponds to one of the first magnets (30).

6. The electrostatic precipitator rapping device as described in claim 3, characterized in that, The adjustment assembly also includes a lifting assembly, the power output end of which is connected to the support frame (52) to drive the support frame (52) to rise or fall; The controller is electrically connected to the lifting assembly and is configured as follows: Control the lifting assembly to drive the support frame (52) to rise or fall, adjust the distance between the second magnet (40) and the first magnet (30), and thereby adjust the peak value of the vibration force.

7. The electrostatic precipitator rapping device as described in claim 6, characterized in that, The adjustment assembly also includes a slide (54), which is slidably engaged with the support frame (52) and has the freedom to slide along the extension direction of the support frame (51); The lifting assembly includes two third drive assemblies (55), which are respectively located at both ends of the support frame (51). The power output end of one third drive assembly (55) is hinged to the support frame (52), and the power output end of the other third drive assembly (55) is hinged to the slide (54). The controller is electrically connected to the third drive component (55) and is configured to: The two third drive components (55) are controlled respectively to drive the support frame (51) to rise or fall, thereby adjusting the peak value of the vibration force; or the tilt angle of the support frame (51) is adjusted so that the vibration force of the multiple vibration heads (13) is distributed in a gradient.

8. The electrostatic precipitator rapping device as described in claim 1, characterized in that, The side of the vibrating head (13) that contacts the anode plate assembly is arc-shaped.

9. The electrostatic precipitator rapping device as described in claim 1, characterized in that, The first drive assembly includes a motor assembly (21) and a drive shaft (22). The drive shaft (22) is fixedly connected to the mounting bracket (11). The power output end of the motor assembly (21) is connected to the drive shaft (22) to drive the drive shaft (22) to rotate.

10. An electrostatic precipitator, characterized in that, Includes the electrostatic precipitator rapping device as described in any one of claims 1-9.

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