An electrostatic precipitator with a movable insulating brush and continuous vibration

Abstract

This invention proposes an electrostatic precipitator with a movable insulating brush and continuous rapping. The precipitator body contains several electric fields arranged along the flue gas treatment direction. Each electric field includes a cathode system, an anode system, a movable insulating brush system, a high-voltage power supply device, an anode rapping system, and a dust hopper. The movable insulating brush system includes a transmission mechanism and several sets of movable insulating brush mechanisms spaced at intervals perpendicular to the flue gas treatment direction. Each set of movable insulating brush mechanisms is equipped with at least one insulating brush. The insulating brushes are located on one or both dust collection sides of the anode plate in the anode system. The transmission mechanism drives the insulating brushes to move and clean the anode plate. An anode rapping system is located at the bottom of the anode system, and this system has several rapping hammers for rapping and cleaning the anode plate. This precipitator, using the combination of insulating brushes and rapping hammers for cleaning, is particularly suitable for highly viscous dust, improving dust removal efficiency and reducing energy consumption.

Description

[Technical Field]

[0001] This invention relates to the technical field of dust collectors, and in particular to an electrostatic precipitator with a movable insulating brush and continuous rapping. [Background Technology]

[0002] Electrostatic precipitators utilize a high-voltage electric field to ionize flue gas. Dust particles in the airflow become charged and separate from the airflow under the influence of the electric field. The dust adheres to the surface of the collecting plate under the influence of the electric field, and a rapping mechanism simultaneously impacts the collecting plate, causing the dust on its surface to fall into the ash hopper. Practice shows that electrostatic precipitators have low energy consumption and good dust removal capacity and high efficiency. However, for highly viscous and easily agglomerated dust, traditional rapping cleaning methods are insufficient or incomplete, severely affecting dust removal efficiency and causing equipment corrosion. This paper proposes an electrostatic precipitator using a moving insulating brush combined with continuous rapping. [Summary of the Invention]

[0003] The purpose of this invention is to solve the problems in the prior art and to propose an electrostatic precipitator with a movable insulating brush and continuous rapping. By using the insulating brush and rapping hammer in combination for dust removal, the dust removal efficiency can be improved.

[0004] To achieve the above objectives, this invention proposes an electrostatic precipitator with a movable insulating brush and continuous rapping, comprising a precipitator body, a cathode system, an anode system, a movable insulating brush system, a high-voltage power supply device, an anode rapping system, and an ash hopper. Several electric fields are arranged within the precipitator body along the flue gas treatment direction. Each electric field is equipped with a cathode system, an anode system, a movable insulating brush system, a high-voltage power supply device, an anode rapping system, and an ash hopper. The high-voltage power supply device supplies power to the cathode and anode systems. The movable insulating brush system includes a transmission mechanism and several sets of movable insulating brush mechanisms spaced apart perpendicular to the flue gas treatment direction. Each set of movable insulating brush mechanisms has at least one insulating brush installed. The insulating brushes are located on one or both dust collection sides of the anode plate in the anode system. The transmission mechanism drives the insulating brushes to move and clean the anode plate. An anode rapping system is located at the bottom of the anode system, and the anode rapping system has several rapping hammers for rapping and cleaning the anode plate. The ash hopper is located below the anode rapping system.

[0005] Preferably, the anode rapping system further includes a rapping motor, a reducer, and a rapping shaft. The rapping motor drives the rapping shaft to rotate through the reducer. Several rapping hammers are spaced apart on the rapping shaft, and any two adjacent rapping hammers are staggered at a certain angle.

[0006] Preferably, the movable insulating brush mechanism further includes a drive shaft, a driven shaft, and a first transmission chain. The drive shaft and the driven shaft are respectively disposed at the top and bottom of the anode plate. The drive shaft and the driven shaft are connected and driven by two first transmission chains. At least one insulating brush is installed between the two first transmission chains. The transmission mechanism is connected to the drive shaft of the movable insulating brush mechanism to drive the insulating brush to move up and down on the anode plate for dust removal.

[0007] Preferably, the first transmission chain in the same electric field has the same rotational linear velocity, while the first transmission chain in different electric fields has different rotational linear velocities, and the rotational linear velocity of the first transmission chain in each electric field gradually decreases along the flue gas treatment direction.

[0008] Preferably, the transmission mechanism includes a motor, a rotary converter, and a second transmission chain. The motor is driven by the drive shaft of each movable insulating brush mechanism through the second transmission chain, and drives the insulating brush on the first transmission chain to move. The rotary converter is electrically connected to the motor and is used to switch the forward and reverse rotation of the motor, so that the insulating brush moves up and down on the anode plate to clean the dust.

[0009] Preferably, each set of movable insulating brush mechanisms is equipped with two insulating brushes, which are respectively arranged on both sides of the anode plate and move in opposite directions. When one insulating brush on each set of movable insulating brush mechanisms moves to the top position of the anode plate, the other insulating brush moves to the bottom position of the anode plate.

[0010] Preferably, the mobile insulating brush system is intermittently started, with the interval between the start-up of the mobile insulating brush system in each electric field along the flue gas treatment direction gradually increasing.

[0011] Preferably, the vibration interval of the vibrating hammer is 2-3 minutes.

[0012] Preferably, the time for the vibratory hammer to rotate one revolution is 0.8-1.2 hours.

[0013] The beneficial effects of this invention are as follows: This invention uses a combination of insulating brushes and rapping hammers for dust removal. The electrostatic precipitator is equipped with a moving insulating brush system with different linear velocities in each electric field, making it suitable for cleaning highly viscous and easily agglomerated dust. By controlling the reciprocating movement of the insulating brushes on both sides of the anode plate, efficient dust removal from the anode plate surface is achieved, improving dust removal efficiency. Adding an anode rapping system at the bottom of the anode system further enhances the dust removal effect and ensures the cleanliness of the anode plate surface.

[0014] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. [Attached Image Description]

[0015] Figure 1This is a front view of an electrostatic precipitator with a movable insulating brush and continuous vibration according to the present invention.

[0016] Figure 2 This is a left-side schematic diagram of a movable insulating brush system within an electric field of an electrostatic precipitator that uses a movable insulating brush in conjunction with continuous vibration, according to the present invention.

[0017] Figure 3 yes Figure 2 Enlarged schematic diagram of some of the structures in the diagram;

[0018] Figure 4 yes Figure 1 A left-side view of an anode rapping system within an electric field. This refers to the axial distribution of the 1st to 46th vibratory hammers on the vibratory shaft;

[0019] Figure 5 yes Figure 4 A schematic diagram of the distribution of the vibratory hammers in the diagram (left view). This refers to the circumferential distribution of the 1st to 46th rapping hammers on the rapping shaft.

Detailed Implementation Methods

[0020] See Figures 1 to 4 This invention discloses an electrostatic precipitator with a movable insulating brush and continuous rapping, comprising a precipitator body 1, a cathode system 2, an anode system 3, a movable insulating brush system 4, a high-voltage power supply device 5, an anode rapping system 6, and a dust hopper 7. The precipitator body 1 contains several electric fields arranged along the flue gas treatment direction. Each electric field is equipped with a cathode system 2 (cathode wire, cathode frame), an anode system 3 (anode plate, anode frame), a movable insulating brush system 4, a high-voltage power supply device 5, an anode rapping system 6, and a dust hopper 7. The high-voltage power supply device 5 supplies power to the cathode system 2 and the anode system 3. The movable insulating brush system 4 includes a transmission mechanism and operates perpendicular to the flue gas treatment direction. Several sets of movable insulating brush mechanisms are arranged at intervals. Each set of movable insulating brush mechanisms is equipped with at least one insulating brush 44. The insulating brush 44 is set on one side of the dust collection side of the anode plate 31 of the anode system 3, or on both sides of the dust collection side (one on each side of the dust collection side of the anode plate. For the anode plate on the side, since there is only one side of dust collection, the brush can be arranged only on the dust collection side). The transmission mechanism is used to drive the insulating brush 44 to move and clean the dust on the anode plate 31. The bottom of the anode system 3 is provided with an anode rapping system 6. The anode rapping system 6 is provided with several rapping hammers 64 for rapping and cleaning the dust on the anode plate 31. The ash hopper 7 is located below the anode rapping system 6.

[0021] Furthermore, the anode rapping system 6 also includes a rapping motor 61, a reducer 62, and a rapping shaft 63. The rapping motor 61 drives the rapping shaft 63 to rotate via the reducer 62. A plurality of rapping hammers 64 are spaced apart on the rapping shaft 63, with any two adjacent rapping hammers 64 staggered at a certain angle, such as... Figure 5 As shown. In this embodiment, the vibration interval of the vibrating hammer 64 is approximately 2.5 minutes, and the time for the vibrating shaft 63 to complete one rotation is approximately 1 hour. The vibrating motor 61 can be directly controlled by a frequency converter to maintain the speed of the vibrating shaft 63 at 1 r / h, or the speed of the vibrating shaft can be achieved through a reducer, or the electrical control can be achieved by setting the start time of the vibrating motor 61 to approximately 2.5 minutes (equal to the vibration interval), meaning that one vibration of the vibrating motor 61 vibrates one hammer per start. Generally, the vibration time of the first, second, third, and fourth electric fields can be adjusted and set on-site according to the actual engineering conditions.

[0022] Furthermore, the movable insulating brush mechanism also includes a drive shaft 41, a driven shaft 42, and a first transmission chain 43. The drive shaft 41 and the driven shaft 42 are respectively disposed at the top and bottom of the anode plate 31. The drive shaft 41 and the driven shaft 42 are connected and driven by two first transmission chains 43. At least one insulating brush 44 is installed between the two first transmission chains 43. The transmission mechanism is connected to the drive shaft 41 of the movable insulating brush mechanism to drive the insulating brush 44 to move up and down reciprocally to clean the anode plate 31.

[0023] Furthermore, the rotational linear velocity of the first transmission chain 43 in the same electric field is the same, while the rotational linear velocity of the first transmission chain 43 in different electric fields is different, and the rotational linear velocity of the first transmission chain 43 in each electric field gradually decreases along the flue gas treatment direction. The transmission speed of the first transmission chain 43 of the moving insulating brush system varies depending on its position before and after the electric field (dust collection speed). In this embodiment, the dust collector body 1 is provided with four electric fields, and the rotational linear velocities of the first transmission chain 43 of the moving insulating brush system in the 1st, 2nd, 3rd, and 4th electric fields are 5-8 m / min, 3-5 m / min, 1.5-3 m / min, and 0.5-1.5 m / min, respectively. When the insulating brush 44 moves to the upper and lower tops, the limit switch is triggered, and the rotary converter controls the motor to switch the direction of rotation, thereby causing the insulating brush 44 to move back and forth on the anode plate for dust removal.

[0024] Furthermore, the transmission mechanism includes a motor, a rotary converter, and a second transmission chain. The motor is a variable frequency motor with continuously adjustable speed. The motor is driven by the drive shaft 41 of each moving insulating brush mechanism through the second transmission chain, and drives the insulating brush 44 on the first transmission chain 43 to move. The rotary converter is electrically connected to the motor and is used to switch the forward and reverse rotation of the motor, so that the insulating brush 44 moves up and down on the anode plate 31 to clean the dust.

[0025] Furthermore, each set of movable insulating brush mechanisms is equipped with two insulating brushes 44. The two insulating brushes 44 are respectively positioned on both sides of the anode plate 31 and move in opposite directions. When one insulating brush 44 on each set of movable insulating brush mechanisms moves to the top position of the anode plate 31, the other insulating brush 44 moves to the bottom position of the anode plate 31. In this embodiment, the insulating brush 44 has several hollow grooves inside. The brush insulation does not change the electrode spacing during dust removal and does not affect the high-voltage discharge. The hollow grooves of the insulating brush make it easy to deform when squeezed, reducing the pressure on the anode plate and preventing the anode plate from deforming under stress.

[0026] Furthermore, the bottom of the dust collector body 1 is also provided with an ash conveying system 8, and the output end of the ash hopper 7 of each electric field is connected to the input port of the ash conveying system 8 through a control valve.

[0027] Furthermore, the mobile insulating brush system 4 is intermittently started, with the start interval gradually increasing in each electric field along the flue gas treatment direction. Generally, the first, second, third, and fourth electric fields are started once every 1 hour, 2 hours, 5 hours, and 10 hours, respectively. If the inlet of the electrostatic precipitator is composed of conventional fly ash (not very sticky and not easily caking), the start time of this system can be appropriately extended or it can be stopped altogether.

[0028] The working process of this invention is as follows: High-dust flue gas enters multiple electric fields through the inlet end cap, is collected by the anode system 3, and is discharged as clean flue gas through the outlet end cap. When the moving insulating brush system is working, the motor drives each drive shaft 41 to rotate through the second transmission chain. At this time, the drive shaft 41 drives the two insulating brushes 44 on both sides of the anode plate 31 on the first transmission chain 43 to move up and down respectively. When the insulating brushes 44 on both sides move to the upper and lower tops respectively, the limit switch is triggered, and the rotation converter controls the motor to switch the direction, thereby causing the insulating brushes 44 to move in different directions, realizing the back and forth movement of the insulating brushes 44 on the anode plate to clean the dust. The swept dust is collected in the ash hopper 7 below. When the anode rapping system is working, the rapping motor drives the rapping shaft 63 to rotate through the reducer 62. The rapping hammer 64 can rappel and clean the anode plate 31, and the fallen dust is collected in the ash hopper 7 below. Finally, simply open the control valve to output the dust in the ash hopper 7 through the ash conveying system 8.

[0029] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A mobile, insulated brush-coated, continuously-rapped, electric precipitator characterized by: The utility model relates to a dust catcher, including dust catcher body (1), cathode system (2), anode system (3), mobile insulation brush system (4), high voltage power supply device (5), anode rapping system (6), ash bucket (7), a plurality of electric fields are arranged in the dust catcher body (1) along the flue gas treatment direction, and each electric field is equipped with cathode system (2), anode system (3), mobile insulation brush system (4), high voltage power supply device (5), anode rapping system (6), ash bucket (7), the high voltage power supply device (5) is used for power supply for cathode system (2), anode system (3), the mobile insulation brush system (4) includes transmission mechanism, a plurality of groups of mobile insulation brush mechanism are arranged along the spacing of perpendicular to the flue gas treatment direction, and at least one insulation brush (44) is installed on each group of mobile insulation brush mechanism, the transmission mechanism is used to drive insulation brush (44) and moves on anode plate (31) and clears ash, the bottom of anode system (3) is equipped with anode rapping system (6), a plurality of rapping hammers (64) for rapping and clearing ash of anode plate (31) are equipped on anode rapping system (6), the ash bucket (7) is below anode rapping system (6), the mobile insulation brush mechanism also includes driving shaft (41), driven shaft (42) and first transmission chain (43), the driving shaft (41) is arranged at the top end of anode plate (31) respectively, and the driven shaft (42) is arranged at the low end, the driving shaft (41) and the driven shaft (42) are connected and are driven through two first transmission chains (43), and at least one insulation brush (44) is installed between two first transmission chains (43), the transmission mechanism is drivenly connected with the driving shaft (41) of mobile insulation brush mechanism, to drive insulation brush (44) and reciprocate on anode plate (31) and clear ash, the rotational linear speed of first transmission chain (43) on the same electric field is same, the rotational linear speed of first transmission chain (43) on different electric fields is different, and the rotational linear speed of first transmission chain (43) of each electric field along the flue gas treatment direction gradually reduces, the mobile insulation brush system (4) is intermittently started, and the interval time of mobile insulation brush system (4) in each electric field along the flue gas treatment direction gradually increases, a plurality of hollow grooves are formed in the inside of insulation brush (44), the transmission mechanism includes motor, rotary diverter and second transmission chain, the motor is drivenly connected with the driving shaft (41) of each mobile insulation brush mechanism through second transmission chain and drives insulation brush (44) on first transmission chain (43) to move, the rotary diverter is electrically connected with the motor and is used to switch the positive and negative rotation of motor, to make insulation brush (44) reciprocate on anode plate (31) and clear ash.Each group of mobile insulation brush mechanism is installed with two insulation brushes (44), which are respectively arranged on both sides of the anode plate (31) and move in opposite directions. When one of the insulation brushes (44) on each group of mobile insulation brush mechanism moves to the top end position of the anode plate (31), the other insulation brush (44) moves to the low end position of the anode plate (31). The beating time interval of the beating hammer (64) is 2-3 minutes, and the time for the beating hammer (64) to rotate one round is 0.8-1.2 hours. When the insulation brushes (44) move to the top and bottom ends, the travel program switch is touched, the rotating direction changer control motor is switched, so that the insulation brushes (44) move back and forth on the anode plate to clean dust. The bottom of the dust collector body (1) is also provided with a dust conveying system (8), and the output ends of the dust hoppers (7) of each electric field are respectively connected to the input ports of the dust conveying system (8) through control valves.

2. A mobile insulated brush-coated continuous-rapier electric precipitator as claimed in claim 1, characterized in that: The anode rapping system (6) further comprises a rapping motor (61), a speed reducer (62) and a rapping shaft (63), the rapping motor (61) drives the rapping shaft (63) to rotate through the speed reducer (62), and a plurality of rapping hammers (64) are arranged on the rapping shaft (63) at intervals, and any two adjacent rapping hammers (64) are arranged at an angle.

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