An energy-saving control device for the high-voltage power supply of electric precipitators in a power plant

Abstract

This application relates to the technical field of soot treatment, and discloses an energy-saving control device for the high-voltage power supply of an electrostatic precipitator in a power plant. To solve the problem of energy waste caused by continuous power supply to the dust collecting electrode during vibration, a cleaning motor is used to drive the driving arm to drive the knocking rod to periodically rotate and strike the dust collecting electrode, realizing periodic dust cleaning of the dust collecting electrode. When the knocking rod impacts the dust collecting electrode, the relative deflection between the knocking rod and the driving arm is utilized to make the switch control the corresponding dust collecting electrode not to work. The knocking rod is more likely to shake off the dust particles adsorbed on the dust collecting electrode. Moreover, since the dust collecting electrode is in a non-working state during the dust cleaning process, the power consumption is also reduced, and energy waste is reduced. Finally, the effects of intermittent striking and dust cleaning under voltage interruption are achieved.

Description

Technical Field

[0001] This application relates to the technical field of soot treatment, and particularly to an energy-saving control device for the high-voltage power supply of an electrostatic precipitator in a power plant. Background Art

[0002] An electrostatic precipitator, officially known as an electrostatic precipitator or an electrical dust removal system, is a highly efficient air purification device. Its core principle is to use the corona discharge phenomenon to charge the tiny dust particles in the flowing gas. Subsequently, under the action of a strong electrostatic field, these charged dust particles are attracted by the electric field force, deviate from the original gas flow trajectory, and deposit on the dust collecting electrode plate, thereby achieving the effective separation of particulate soot in the flue gas. This system is widely used in many fields such as thermal power plants, sintering machines in steel enterprises, and industrial boilers, and plays an irreplaceable role in reducing soot emissions generated during coal combustion, oil combustion, etc., reducing air pollution, and improving environmental quality.

[0003] In the current electrostatic precipitation technology, the dust collecting electrode plate faces a significant problem during the dust cleaning process: that is, when using the traditional knocking method for dust cleaning, the dust collecting electrode plate often remains in the working state. This continuous working state has an adverse effect on the dust cleaning effect. Since the dust collecting electrode plate is still charged when being knocked, the dust particles adsorbed on its surface are restricted by the electric field force and are difficult to fall off easily. This not only results in poor dust cleaning effect, with some dust particles still remaining on the electrode plate, but also may cause the newly entered dust to be re-suspended due to the vibration generated by the knocking, increasing the risk of secondary pollution. In addition, the continuous working of the dust collecting electrode plate during the dust cleaning process also causes energy waste, mainly in the knocking dust cleaning stage. Since the dust collecting electrode plate is always working and hinders the dust cleaning work, this not only increases unnecessary power consumption but also reduces the energy efficiency of the entire dust removal system.

[0004] In summary, the continuous working of the dust collecting electrode plate in the current electrostatic precipitator during the dust cleaning process not only affects the dust cleaning effect but also causes energy waste. To improve this problem, it is necessary to explore more advanced dust cleaning technologies and intelligent control strategies to achieve more efficient and energy-saving dust removal effects. Summary of the Invention

[0005] This application proposes an energy-saving control device for the high-voltage power supply of an electrostatic precipitator in a power plant, which has the advantages of intermittent hitting and voltage-off dust cleaning, to solve the problem of energy waste caused by the continuous power supply of the dust collecting electrode plate during vibration in the above-mentioned background art.

[0006] To achieve the above object, the present application adopts the following technical solutions: An energy-saving control device for the high-voltage power supply of an electrostatic precipitator in a power plant, comprising: a dust removal box, the flue gas is input into the dust removal cavity from the intake pipe by a fan, the filtered flue gas is output from the exhaust pipe, and the filtered dust falls into the ash discharge pipe; a charging component, fixed on the top of the dust removal box, used to charge the dust in the flue gas, so that the dust is more easily adsorbed and collected by the dust collecting plates on both sides of the charging component; a dust cleaning motor, fixed at the bottom of the dust removal box, and its output shaft extends into the dust removal cavity; a driving arm, installed on the output shaft of the dust cleaning motor, and sprockets are respectively movably installed at both ends inside the driving arm, the sprockets are connected by a chain drive, and a knocking rod is fixedly installed on the sprockets; a pulling frame, fixed on the side of the chain, a switch is installed on the pulling frame, a reset spring is fixedly installed at the end of the pulling frame, and one end of the reset spring is fixedly installed with the inner side of the driving arm; when the switch is turned on, the dust collecting plates are in a working state, used to adsorb and filter the charged dust; when the switch is turned off, the dust collecting plates are not working, and when the knocking rod hits the dust collecting plates, the soot adsorbed on the surface of the dust collecting plates easily falls into the ash discharge pipe.

[0007] Further, a pulley is fixedly installed on the outer side of the output shaft of the dust cleaning motor, and the pulley is connected by a belt drive.

[0008] Further, a driving disc is fixedly installed on the output shaft of the dust cleaning motor, and a speed regulating spring is fixedly connected to the outside of the driving disc, and a top head is fixedly installed at the end of the speed regulating spring; a guiding base is fixed inside the dust removal box, and a pulling disc frame is movably installed on the top of the guiding base, a driven gear ring disc is fixedly installed inside the pulling disc frame through a bearing, and the driven gear ring disc is located on the outer side of the driving disc; a driven gear is movably installed on the pulling disc frame, the driven gear and the driven gear ring disc are meshed and driven, a support cylinder is fixedly installed on the end face of the driven gear, and a coaxial fixed connection is made between the end of the driving arm and the top of the support cylinder.

[0009] Further, a directional guide rod is fixedly installed at the inner bottom of the dust removal box, and the directional guide rod and the bottom of the dust collecting plate are movably sleeved, a detection sliding frame is fixedly installed at the bottom of the dust collecting plate, a detection top rod located below the detection sliding frame is fixedly installed on the surface of the pulling disc frame, and a detection push spring is fixedly connected between the end of the pulling disc frame and the guiding base.

[0010] Further, the bottom of the detection sliding frame is inclined.

[0011] Further, a magnetic blocking seat is sleeved inside the support cylinder, and an adjusting screw rod is threadedly connected to the middle of the magnetic blocking seat, the top of the adjusting screw rod passes through the support cylinder and is fixedly connected coaxially with the sprocket inside the driving arm; a movable magnet is fixedly installed inside the pulling disc frame, a fixed magnetic sleeve seat is movably installed on the top of the driving disc, and an anti-deviation guide rod is movably installed on the top of the fixed magnetic sleeve seat, the end of the anti-deviation guide rod is fixed at the end of the pulling disc frame, and a fixed magnet is fixedly installed in the fixed magnetic sleeve seat, and the fixed magnet and the movable magnet attract each other magnetically.

[0012] Furthermore, a stepped base is fixedly connected to the bottom end of the back of the dust collecting electrode plate.

[0013] The present invention has the following beneficial effects:

[0014] A kind of energy-saving control device for the high-voltage power supply of electric dust removal in a power plant provided by this application controls the driving arm to rotate at a predetermined period through a precisely controlled ash cleaning motor, and then drives the knocking rod to precisely knock the dust collecting electrode plate periodically, effectively removing the dust particles attached to the surface of the electrode plate. In this process, each precise impact of the knocking rod not only has a moderate force, but also through optimized design, can utilize the preset relative deflection mechanism between the knocking rod and the robotic arm at the moment of impact to automatically trigger an electronic switch system, which immediately cuts off or reduces the high-voltage power supply of the corresponding dust collecting electrode plate, so that the electrode plate temporarily stops or reduces its working state during ash cleaning.

[0015] The ingenious part of this design is that by intermittently stopping or reducing the working voltage of the dust collecting electrode plate, it not only significantly enhances the effect of the knocking rod on shaking off dust particles, ensuring the thoroughness and efficiency of ash cleaning, but also fundamentally reduces unnecessary power consumption, achieving a significant energy-saving effect. At the same time, since the dust collecting electrode plate is in a non-full-power or suspended state during ash cleaning, it effectively avoids energy waste and potential overheating risks caused by continuous operation, extends the service life of the equipment, and reduces the maintenance cost.

[0016] In summary, this energy-saving control device not only realizes the intelligent management of the electric dust removal system, but also greatly improves the dust removal efficiency and energy utilization efficiency through the dual strategies of intermittent hitting and voltage-breaking ash cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings forming a part of the specification depict the embodiments disclosed in this application and, together with the specification, are used to explain the principles disclosed in this application.

[0018] Referring to the drawings, this application can be more clearly understood according to the following detailed description, where:

[0019] Figure 1 is a schematic diagram of the overall external three-dimensional structure;

[0020] Figure 2 is a schematic diagram of the overall bottom three-dimensional structure;

[0021] Figure 3 is a schematic diagram of the overall internal three-dimensional structure;

[0022] Figure 4 is a schematic diagram of the three-dimensional structure of ash cleaning for a single dust collecting electrode plate;

[0023] Figure 5 is a schematic diagram of the three-dimensional structure of the dust collecting electrode plate;

[0024] Figure 6 Schematic diagram of the structures of various components on the pulling plate frame

[0025] Figure 7 is Figure 6 Schematic diagram of the enlarged structure at position E in

[0026] In the figure: 1. Dust removal box; 100. Dust removal chamber; 101. Air inlet pipe; 102. Exhaust pipe; 103. Ash discharge pipe; 2. Charging component; 3. Ash cleaning motor; 4. Belt pulley; 400. Belt; 5. Dust collecting electric plate; 500. Step base; 501. Detection sliding frame; 6. Directional guide rod; 7. Driving disc; 700. Speed regulating spring; 701. Top head; 8. Driven gear ring disc; 9. Pulling plate frame; 900. Anti-deviation guide rod; 901. Detection push rod; 902. Detection push spring; 10. Guide base; 11. Fixed magnetic sleeve seat; 110. Fixed magnetic block; 12. Support cylinder; 13. Driving arm; 14. Knocking rod; 15. Driven gear; 16. Sprocket; 160. Chain; 17. Movable magnetic block; 18. Pulling frame; 180. Return spring; 19. Switch; 20. Adjusting screw; 21. Magnetic blocking seat. Specific implementation mode

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0028] Embodiment 1

[0029] Please refer to Figures 1 - 3 It can be seen that the dust removal box 1 is the framework of the entire device, and its bottom is supported at the required position by a steel frame. The flue gas output from the power plant is input into the dust removal chamber 100 through the air inlet pipe 101 by a fan. The flue gas is purified and dust-removed inside the dust removal chamber 100, and the purified flue gas is discharged from the exhaust pipe 102. The intercepted dust particles will fall into the ash discharge pipe 103 arranged at the bottom of the dust removal box 1. Under normal conditions, the ash discharge pipe 103 is in a closed state. When it is necessary to clean the intercepted dust particles, only the ash discharge pipe 103 needs to be opened.

[0030] Regarding the method of dust interception, this method is the same as the currently common method. Refer to Figure 3It can be known that a plurality of charging components 2 are fixedly installed on the top of the dust removal box 1. The charging components 2 are located in the dust removal chamber 100 and are equidistantly arranged on the path between the exhaust pipe 102 and the intake pipe 101. When the dust in the flue gas passes through the charging components 2, the charging components 2 charge the dust. When the charged dust passes through the dust collecting plates 5 arranged on both sides of the charging components 2, the dust particles are easily adsorbed by the dust collecting plates 5, thereby completing the purification and filtration of the flue gas.

[0031] As the dust collecting plate 5 is adsorbed for a long time, dust particles will accumulate on the dust collecting plate 5, resulting in a gradual decrease in the dust adsorption efficiency of the dust collecting plate 5. In order to achieve the vibration and cleaning of the dust collecting plate 5, the dust collecting plate 5 is combined with the dust collecting plate 5 to remove the dust particles. Figure 2 , Figure 3 , Figure 6 and Figure 7 It can be clearly seen that at the bottom of the dust removal box 1, there is a cleaning motor 3 fixed by a bracket, and a pulley 4 is fixedly installed on the outer side of the output shaft of the cleaning motor 3. The number of pulleys 4 corresponds to the number of dust collecting plates 5. The pulleys 4 are connected by belts 400 to achieve synchronous rotation of the pulleys 4 following the cleaning motor 3, providing the necessary conditions for subsequent cleaning by knocking on the dust collecting plates 5. The output shaft of the cleaning motor 3 extends into the dust removal chamber 100. In this first embodiment, the driving arm 13 can be directly installed on the output shaft of the cleaning motor 3 so that the cleaning motor 3 drives the driving arm 13 to rotate continuously. Sprockets 16 are movably installed at both ends of the driving arm 13, and the sprockets 16 are connected by chains 160. Figure 6 It can be seen that a knocking rod 14 is fixedly mounted on the sprocket 16 relatively far away from the central axis of rotation, and the knocking rod 14 is movably connected between the sprocket 16 and the driving arm 13 to achieve relative deflection between the driving arm 13 and the knocking rod 14.

[0032] A pull frame 18 is fixedly connected to the side of the chain 160, and a switch 19 is installed on the pull frame 18. A reset spring 180 is fixedly installed on the end of the pull frame 18, and one end of the reset spring 180 is fixedly installed to the inner side of the driving arm 13. Under normal circumstances, the pull frame 18 is pushed by the elastic force of the reset spring 180 to push the switch 19 to the inside of the driving arm 13, and the switch 19 is in the on state. At the same time, the driving arm 13 and the knocking rod 14 are arranged in a straight line, and the angle between the two is 180°. Since the switch 19 controls the on and off of the dust collecting plate 5, when the switch 19 is on, the dust collecting plate 5 is in a working state; similarly, when the switch 19 is off, the dust collecting plate 5 will no longer be working. Figure 4 It can be clearly seen that the knocking rod 14 and the driving arm 13 are arranged on the back side of the dust collecting electric plate 5.

[0033] When the dust removal box 1 processes the flue gas output by the power plant, the fan sends the flue gas from the intake pipe 101 into the dust removal chamber 100. The dust particles in the flue gas are charged by the charging component 2 and then adsorbed by the dust collecting electrode plate 5. The purified flue gas is output from the exhaust pipe 102.

[0034] Meanwhile, the ash cleaning motor 3 drives the driving arm 13 to rotate. When the driving arm 13 drives the knocking rod 14 to knock the dust collecting electrode plate 5, combined with Figure 4 it can be known that as the driving arm 13 continues to deflect counterclockwise, the top of the knocking rod 14 abuts against the dust collecting electrode plate 5, resulting in relative deflection between the driving arm 13 and the knocking rod 14. Referring to Figure 7 it can be seen that the knocking rod 14 drives the sprocket 16 to rotate clockwise, forcing the chain 160 to compress the return spring 180 through the pulling frame 18. During this process, the extrusion of the switch 19 is released and it is in the off state, forcing the dust collecting electrode plate 5 controlled by it to be in the non - working state. The knocking of the knocking rod 14 on the dust collecting electrode plate 5 will cause it to vibrate. When the dust collecting electrode plate 5 is not working, the dust collecting electrode plate 5 will reduce the adsorption force on the soot particles, and the soot particles will be affected by the vibration and break away from the dust collecting electrode plate 5 and fall into the lower ash discharge pipe 103 for storage.

[0035] As the driving arm 13 continues to deflect, the included angle between the knocking rod 14 and the driving arm 13 continuously decreases until the knocking rod 14 slides past the back of the dust collecting electrode plate 5. Under the elastic force of the return spring 180, the pulling frame 18 presses against the inner side of the driving arm 13 again. At the same time, the driving arm 13 and the knocking rod 14 are arranged in a straight line again, waiting for the driving arm 13 to rotate through the ash cleaning motor 3 to knock and shake the ash on the dust collecting electrode plate 5 again.

[0036] Embodiment 2

[0037] On the basis of Embodiment 1, for further improvement, in order to increase the knocking frequency, referring to Figure 4 、 Figure 6 and Figure 7 it can be clearly seen that in this Embodiment 2, the ash cleaning motor 3 is not directly connected to the driving arm 13. Specifically, a driving disk 7 is fixedly installed on the output shaft of the ash cleaning motor 3, and an adjusting speed spring 700 is fixedly connected to the outside of the driving disk 7. Generally, there are multiple adjusting speed springs 700. In this application, six are taken as an example, and the actual arrangement quantity can be adjusted as required. The multiple adjusting speed springs 700 are annularly and equally - angularly distributed. The end of the adjusting speed spring 700 is fixedly installed with a top head 701. The number of the top heads 701 corresponds to the number of the adjusting speed springs 700. The end face of the top head 701 is relatively rough to increase the friction force.

[0038] The pulling plate frame 9 is connected to the guiding base 10 by means of a dovetail groove. The guiding base 10 is fixedly installed on the inner side of the dust removal box 1 by bolts. The pulling plate frame 9 can only reciprocate along the guiding base 10. At the same time, a driven gear ring plate 8 is fixedly installed on the inner side of the pulling plate frame 9 through a bearing, and the driven gear ring plate 8 is located on the outer side of the driving disc 7. Among them, the top head 701 and the speed regulating spring 700 are located between the two. The top head 701 is pressed against the inner side of the driven gear ring plate 8 by the elastic force of the speed regulating spring 700. When the driving disc 7 rotates, the driven gear ring plate 8 is forced to rotate following the driving disc 7 by the frictional force between the top head 701 and the inner side of the driven gear ring plate 8. A driven gear 15 is movably installed on the pulling plate frame 9 through an "L"-shaped bracket. The driven gear 15 and the driven gear ring plate 8 are in meshing transmission. A support cylinder 12 is fixedly installed on the end face of the driven gear 15. The end of the driving arm 13 far from the knocking rod 14 and the top of the support cylinder 12 are fixedly connected coaxially. When the dust cleaning motor 3 drives the driving disc 7 and the driven gear ring plate 8 to rotate, the rotation of the driven gear 15 is accelerated by the meshing transmission between the driven gear ring plate 8 and the driven gear 15, thereby increasing the knocking frequency of the knocking rod 14 on the dust collecting electrode 5.

[0039] On this basis, combined with Figure 4 It can be seen that a vertically arranged guiding rod 6 is fixedly installed at the inner bottom of the dust removal box 1. The guiding rod 6 and the bottom of the dust collecting electrode 5 are movably sleeved, thereby restricting the dust collecting electrode 5 to only move up and down. At the same time, a detection sliding frame 501 is fixedly installed above the pulling plate frame 9 at the bottom of the dust collecting electrode 5 by bolts. Figure 5 It can be seen that the bottom of the detection sliding frame 501 is beveled. Correspondingly, a detection top rod 901 is fixedly installed on the surface of the pulling plate frame 9 below the detection sliding frame 501. When the dust collecting electrode 5 moves downward, the detection sliding frame 501 presses against the top of the detection top rod 901 by means of the bevel, forcing the pulling plate frame 9 to pull the driven gear ring plate 8 to move along the radial direction of the driving disc 7. Combined with Figure 6 It can be seen that a detection push spring 902 is fixedly connected between the end of the pulling plate frame 9 and the guiding base 10. The pulling plate frame 9 always has a tendency to push the detection top rod 901 towards the driving disc 7 under the thrust of the detection push spring 902.

[0040] During specific implementation, when the dust collecting electrode 5 is relatively clean, the pulling plate frame 9 pushes the detection top rod 901 towards the driving disc 7 under the elastic force of the detection push spring 902. The detection top rod 901 will move along the bevel of the detection sliding frame 501. The detection sliding frame 501 forces the dust collecting electrode 5 to move upward along the guiding rod 6 due to the influence of the bevel. At the same time, the pulling plate frame 9 pushes the driven gear ring plate 8 to press along the radial direction of the driving disc 7, resulting in an increase in the distance between the central axes of the driven gear ring plate 8 and the driving disc 7. Combined with Figure 4It can be known that the inner distance between the driving disk 7 and the driven gear ring disk 8 in the direction close to the detection push rod 901 is the smallest, and the speed regulating spring 700 between these parts is compressed; the distance at the symmetrical part is the largest, and the elastic elongation distance of the speed regulating spring 700 cannot push the top head 701 to contact the inner side of the driven gear ring disk 8. It can be known from common sense that when the dust cleaning motor 3 drives the driving disk 7 to rotate, since the inner sides of the driving disk 7 and the driven gear ring disk 8 are relatively close, when the driving disk 7 uses the speed regulating spring 700 and the top head 701 to perform frictional transmission with the driven gear ring disk 8, the top head 701 forces the driven gear ring disk 8 to rotate, and the driven gear 15 is driven by the driven gear ring disk 8 to rotate synchronously, so as to drive the driving arm 13 to drive the knocking rod 14 to knock the back of the dust collecting electric plate 5, and finally achieve the knocking dust cleaning as described in the first embodiment.

[0041] If there are more soot particles adsorbed on the surface of the dust collecting electric plate 5 during its application, this will cause the overall weight of the dust collecting electric plate 5 to increase, and then it will slide down along the directional guide rod 6. At the same time, the detection carriage 501 is pressed downward, and under the influence of the inclined surface, the detection push rod 901 drives the pull disk frame 9 to compress the detection push spring 902. At the same time, the pull disk frame 9 pulls the driven gear ring disk 8 to move synchronously, so that the central axis distance between the driving disk 7 and the driven gear ring disk 8 is shortened. When the driving disk 7 drives the top head 701 to rotate the driven gear ring disk 8, the shortest distance between the inner sides of the driving disk 7 and the driven gear ring disk 8 is greater than the shortest distance under the normal state mentioned above. Therefore, the speed regulating spring 700 relatively grows, and the speed regulating spring 700 drives the top head 701 to increase the rotation speed of the driven gear ring disk 8. As the rotation speed of the driven gear ring disk 8 increases, the driven gear 15 meshed with it also accelerates to rotate, thereby increasing the frequency of the driving arm 13 driving the knocking rod 14 to knock the dust collecting electric plate 5, so as to improve the dust cleaning efficiency.

[0042] Embodiment 3

[0043] On the basis of Embodiment 2, further improvement is made. It can be known from actual application that when the driving arm 13 drives the knocking rod 14 to rotate relatively slowly, the driving arm 13 drives the knocking rod 14 to knock and shake the dust. Since there is a certain deflection between the driving arm 13 and the knocking rod 14, the duration of this deflection is the power-off dust shaking time of the dust collecting electric plate 5. However, as described in Embodiment 2, when there is too much soot accumulated on the dust collecting electric plate 5, it will cause the rotation speed of the driving arm 13 driving the knocking rod 14 to increase. If it is not restricted, the rotation speed of the driving arm 13 is too fast, which will lead to a shortening of the deflection time between the driving arm 13 and the knocking rod 14, and the power-off dust cleaning time of the dust collecting electric plate 5 will relatively decrease as the rotation speed of the support cylinder 12 increases. In order to prevent the problem of too short power-off dust cleaning time caused by the driving arm 13 rotating too fast, please refer to Figure 4 、 Figure 6 and Figure 7As can be seen, a magnetic shielding seat 21 is sleeved inside the support cylinder 12, and an adjusting screw rod 20 is threadedly connected to the middle of the magnetic shielding seat 21. The top of the adjusting screw rod 20 passes through the support cylinder 12 and is coaxially and fixedly connected to the sprocket 16 inside the driving arm 13. When the sprocket 16 rotates, it will drive the adjusting screw rod 20 to rotate synchronously. Specifically, for the convenience of installing the magnetic shielding seat 21, a bolt is threadedly connected to the top of the support cylinder 12. This bolt passes through the magnetic shielding seat 21 and is fixedly connected to the driven gear 15. The magnetic shielding seat 21 is movably installed between the bolt and the bolt, which ensures the firm connection between the support cylinder 12 and the driven gear 15, and also uses the bolt to guide the magnetic shielding seat 21. When the adjusting screw rod 20 rotates, the relative rotation between the outer screw thread of the adjusting screw rod 20 and the magnetic shielding seat 21 is utilized to realize the up and down movement of the magnetic shielding seat 21 along the adjusting screw rod 20.

[0044] An active magnetic block 17 located on one side of the magnetic shielding seat 21 is fixedly installed inside the pull disc frame 9. When the magnetic shielding seat 21 abuts against the driven gear 15, the end of the active magnetic block 17 will be blocked. Correspondingly, combined with Figure 6 and Figure 7 it can be seen that a fixed magnetic sleeve seat 11 is movably installed on the top of the driving disc 7, and a deviation preventing guide rod 900 is movably installed on the top of the fixed magnetic sleeve seat 11. The end of the deviation preventing guide rod 900 is fixed to the end of the pull disc frame 9. When the driving disc 7 rotates, since the fixed magnetic sleeve seat 11 is restricted by the deviation preventing guide rod 900 and cannot rotate, therefore, the fixed magnetic sleeve seat 11 will rotate relative to the driving disc 7. A fixed magnetic block 110 is fixedly installed in the fixed magnetic sleeve seat 11, and the fixed magnetic block 110 and the active magnetic block 17 are magnetically attracted to each other. Due to the restriction of the deviation preventing guide rod 900, the fixed magnetic block 110 and the active magnetic block 17 will always be in a state where their magnetic surfaces face each other.

[0045] In actual application, when the dust cleaning motor 3 drives the driving disc 7 to rotate, the driving disc 7 drives the top head 701 to rotate. The top head 701 is pressed against the inner side of the driven gear ring disc 8 by the elastic force of the speed regulating spring 700. The friction force between the top head 701 and the driven gear ring disc 8 forces the driven gear ring disc 8 to rotate. The driven gear ring disc 8 drives the driving arm 13 to rotate synchronously through the driven gear 15 and the support cylinder 12. When the driving arm 13 drives the knocking rod 14 to hit the dust collecting electrode plate 5, the knocking rod 14 is blocked by the dust collecting electrode plate 5 and deflects relative to the driving arm 13. On the one hand, the knocking rod 14 drives the sprocket 16 to rotate, forcing the pulling frame 18 to compress the return spring 180, and the switch 19 is no longer squeezed, so the dust collecting electrode plate 5 stops working. The vibration generated by the knocking rod 14 hitting the dust collecting electrode plate 5 shakes off the dust adsorbed on the surface of the dust collecting electrode plate 5. On the other hand, when the chain 160 makes the sprocket 16 at the top of the support cylinder 12 rotate synchronously, the adjusting screw 20 rotates following the sprocket 16. As the angle between the driving arm 13 and the knocking rod 14 shortens, the adjusting screw 20 rotates to make the magnetic blocking seat 21 move upward continuously. The magnetic surface between the movable magnetic block 17 and the fixed magnetic block 110 increases due to the continuous upward movement of the magnetic blocking seat 21. Due to the increase in the magnetic surface, the magnetic attraction intensity between the movable magnetic block 17 and the fixed magnetic block 110 increases continuously. Then, the movable magnetic block 17 pulls the pulling disc frame 9 closer to the driving disc 7. At the same time, the detection ejector rod 901 pushes the dust collecting electrode plate 5 upward through the detection sliding frame 501. Combining the content in the second embodiment, when the minimum distance between the driving disc 7 and the driven gear ring disc 8 continuously shortens, the speed regulating spring 700 is further compressed. When the driving disc 7 drives the top head 701 to drive the driven gear ring disc 8 to rotate, the rotation speed of the driven gear ring disc 8 decreases. Therefore, during the process of the knocking rod 14 knocking the dust collecting electrode plate 5, the driven gear ring disc 8 is forced to approach the driving disc 7, and the rotation speed of the driven gear ring disc 8 decreases, ultimately reducing the rotation speed of the driven gear 15, so as to ensure that when the knocking rod 14 knocks the dust collecting electrode plate 5, the knocking time is not shortened due to the too fast rotation of the driving arm 13.

[0046] Finally, when the driving arm 13 drives the knocking rod 14 away from the dust collecting electric plate 5, the reset spring 180's elastic force causes the switch 19 to be squeezed by the driving arm 13 again. The dust collecting electric plate 5 works again and performs dust adsorption work. At the same time, the reset spring 180 pushes the pulling frame 18, forcing the chain 160 to rotate in the opposite direction. The adjusting screw 20 rotates in the opposite direction and the magnetic blocking seat 21 moves downward until the magnetic blocking seat 21 blocks the relative magnetic surfaces between the movable magnetic block 17 and the fixed magnetic block 110. As the knocking rod 14 resets, it will finally be arranged in a straight line with the driving arm 13. Since the magnetic blocking seat 21 blocks the movable magnetic block 17, the dust collecting electric plate 5's gravity presses the detection slide 501 onto the detection ejector rod 901, forcing the detection ejector rod 901 to push the pull plate frame 9 to compress the detection push spring 902 again. The distance between the driving disk 7 and the driven gear ring disk 8 increases, causing the rotation speed of the driven gear ring disk 8 to increase, and then the rotation speed is determined again according to the weight of the dust collecting electric plate 5.

[0047] Embodiment 4

[0048] As a supplement to Embodiment 3, please refer to Figure 3 and Figure 4 It can be seen that a stepped base 500 is fixedly connected to the bottom end of the back of the dust collecting electric plate 5. Combining the content in Embodiment 3, it can be known that when the knocking rod 14 strikes the dust collecting electric plate 5, affected by the magnetic attraction between the movable magnetic block 17 and the fixed magnetic block 110, the detection ejector rod 901 is forced to push the dust collecting electric plate 5 upward through the detection slide 501. During the upward movement of the dust collecting electric plate 5, the stepped base 500 will move upward synchronously with the dust collecting electric plate 5. As the stepped base 500 moves upward, the knocking rod 14 will successively cross the stepped surfaces of the stepped base 500. Each time of detachment and re-contact will cause an impact between the knocking rod 14 and the stepped base 500. Therefore, during the power-off dust removal process of the dust collecting electric plate 5, not only can the driving arm 13 drive the knocking rod 14 to perform one-time knocking and ash cleaning, but also the knocking rod 14 can be used to perform secondary continuous knocking and ash cleaning along the stepped base 500, thereby enhancing the vibration intensity of the dust collecting electric plate 5 and making it easier to shake the soot particles adsorbed on the dust collecting electric plate 5 into the ash discharge pipe 103.

Claims

1. An energy-saving control device for high-voltage power supply of electric dust removal in a power plant, characterized in that: include: The dust removal box (1) is provided with smoke from an air inlet pipe (101) through a fan and is input into a dust removal chamber (100). The filtered smoke is output from an exhaust pipe (102), and the filtered dust falls into an ash discharge pipe (103); A charging component (2) is fixed on the top of the dust removal box (1) and is used to charge the dust in the flue gas so that the dust can be more easily adsorbed and collected by the dust collecting plates (5) on both sides of the charging component (2); A dust cleaning motor (3) is fixed at the bottom of the dust removal box (1), and its output shaft extends into the dust removal chamber (100); The driving arm (13) is mounted on the output shaft of the dust cleaning motor (3), and sprockets (16) are movably mounted at both ends of the driving arm (13). The sprockets (16) are connected to each other by a chain (160), and a knocking rod (14) is fixedly mounted on the sprocket (16); A pull frame (18) is fixed on the side of the chain (160), a switch (19) is installed on the pull frame (18), a return spring (180) is fixedly installed at the end of the pull frame (18), and one end of the return spring (180) is fixedly installed on the inner side of the driving arm (13); When the switch (19) is turned on, the dust collecting plate (5) is in a working state, and is used to perform adsorption and filtering work on the charged dust; When the switch (19) is disconnected, the dust collecting plate (5) is no longer in operation, and when the knocking rod (14) strikes the dust collecting plate (5), smoke and dust adsorbed on the surface of the dust collecting plate (5) is easily dropped into the ash discharge pipe (103).

2. The energy-saving control device for high-voltage power supply of electric dust removal in power plants according to claim 1 is characterized in that: A pulley (4) is fixedly mounted on the outer side of the output shaft of the dust cleaning motor (3), and the pulley (4) is connected by a belt (400).

3. The energy-saving control device for high-voltage power supply of electric dust removal in power plants according to claim 1 is characterized in that: A driving disk (7) is fixedly mounted on the output shaft of the dust cleaning motor (3), and a speed regulating spring (700) is fixedly connected to the outer side of the driving disk (7), and a head (701) is fixedly mounted on the end of the speed regulating spring (700); A guide base (10) is fixed on the inner side of the dust removal box (1), and a pull plate frame (9) is movably installed on the top of the guide base (10), and a driven gear ring plate (8) is fixed on the inner side of the pull plate frame (9) via a bearing, and the driven gear ring plate (8) is located on the outer side of the driving plate (7); A driven gear (15) is movably mounted on the pull plate frame (9), and the driven gear (15) and the driven gear ring plate (8) are meshed for transmission. A support cylinder (12) is fixedly mounted on the end surface of the driven gear (15), and the end of the driving arm (13) and the top of the support cylinder (12) are fixedly connected.

4. The energy-saving control device for high-voltage power supply of electric dust removal in power plants according to claim 3 is characterized in that: A directional guide rod (6) is fixedly installed at the bottom of the inner side of the dust removal box (1), and a directional guide rod (6) and the bottom of the dust collecting electric plate (5) are movably mounted therebetween. A detection slide (501) is fixedly installed at the bottom of the dust collecting electric plate (5), and a detection push rod (901) located below the detection slide (501) is fixedly installed on the surface of the pull plate frame (9), and a detection push spring (902) is fixedly connected between the end of the pull plate frame (9) and the guide base (10).

5. The energy-saving control device for high-voltage power supply of electric dust removal in power plants according to claim 4 is characterized in that: The bottom of the detection slide (501) is inclined.

6. The energy-saving control device for high-voltage power supply of electric dust removal in power plants according to claim 4, characterized in that: A magnetic blocking seat (21) is mounted inside the support tube (12), and an adjusting screw (20) is threadedly connected to the middle of the magnetic blocking seat (21). The top of the adjusting screw (20) passes through the support tube (12) and is coaxially fixedly connected to the sprocket (16) inside the driving arm (13); A movable magnetic block (17) is fixedly installed inside the pull plate frame (9), a fixed magnetic sleeve seat (11) is movably installed on the top of the active plate (7), and an anti-deflection guide rod (900) is movably installed on the top of the fixed magnetic sleeve seat (11), the end of the anti-deflection guide rod (900) is fixed to the end of the pull plate frame (9), a fixed magnetic block (110) is fixedly installed in the fixed magnetic sleeve seat (11), and the fixed magnetic block (110) and the movable magnetic block (17) are magnetically attracted to each other.

7. The energy-saving control device for high-voltage power supply of electric dust removal in power plants according to claim 6 is characterized in that: The bottom end of the back of the dust collecting electric plate (5) is fixedly connected with a stepped base (500).

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