Electrostatic precipitator plate rapping method based on linkage control

Abstract

The application provides a linkage control-based electric dust collector plate rapping method, which comprises the following steps: a front dust filtering chamber is arranged at the front part of the dust collector; a first motor drives a movable nut to move up and down through a lead screw, thereby driving a mounting plate and three groups of knocking structures to synchronously vibrate vertically, linkage control of single-motor driving of multiple groups of rapping is realized; a plurality of clamping grooves are arranged on the partition plate of the middle electrostatic dust chamber; the lower ends of the cathode plate and the anode plate are embedded in the clamping grooves; meanwhile, the partition plate is provided with a dust falling port, the whole electrode plate can be pulled out from the clamping groove, and the dust falling port can directly clean the dust accumulated at the bottom of the electrode plate. A plastic strip made of silicon rubber material is embedded in the embedded port of the knocking plate; the elastic deformation characteristics of the silicon rubber can buffer the impact force during the rapping of the electrode plate, and rigid jamming of the electrode plate and the knocking plate caused by dust accumulation and electrostatic adsorption is avoided. The application is used for the rapping of the electrode plate of the electric dust collector.

Description

Technical Field

[0001] This invention relates to the field of anti-jamming technology for electrostatic precipitator electrode plate vibration, specifically to a method for vibrating electrostatic precipitator electrode plates based on linkage control. Background Technology

[0002] Electrostatic precipitators (ESPs) are essential equipment in thermal power plants. Their function is to remove particulate matter from flue gas emitted from combustion-fired or oil-fired boilers, significantly reducing the amount of particulate matter released into the atmosphere. This is a crucial environmental protection device for improving air quality and reducing pollution. The working principle of an ESP is as follows: as flue gas passes through the flue duct before the main structure, the particulate matter becomes positively charged. The flue gas then enters the ESP channel, which contains multiple layers of cathode plates. Due to the mutual attraction between the positively charged particulate matter and the cathode plates, the particulate matter in the flue gas is adsorbed onto the cathodes. Periodic impacts on the cathode plates cause the accumulated dust to fall into the ash hopper below the ESP structure under the combined effects of its own weight and vibration, thus achieving the purpose of removing particulate matter from the flue gas.

[0003] The description of a rapping device for the electrode plates of an electrostatic precipitator (publication number CN217341833U) mentions that it "includes a rapping motor, a rapping shaft connected to the output shaft of the rapping motor, and a rapping hammer fixedly connected to the rapping shaft. One end of the rapping hammer is fixedly connected to the rapping shaft, and the other end is suspended. The rapping device includes multiple rapping shafts, each with a different rotational speed, and each rapping shaft is equipped with a rapping hammer. The rapping shaft is installed on the casing of the electrostatic precipitator. Each rapping shaft corresponds to a set of electrode plates. By adopting the above technical solution, the rapping motor drives the rapping hammer to rotate through bearings and rapping rods, applying a lateral rapping force to the electrode plates. The electrode plates vibrate under the action of the lateral rapping force. Under the action of inertial force, the adhesion between the dust layer and the electrode plates decreases, and under the action of gravity..." The dust layer slides off the electrode plates and falls into the ash hopper at the bottom of the electrostatic precipitator, thus achieving the electrode plate cleaning effect. Multiple rapping shafts rotate at different speeds, and the vibration frequencies generated on the electrode plates when the rapping hammers on different shafts strike them vary. This allows for different rapping frequencies to be used for electrode plates with different electric fields, facilitating electrode plate cleaning. Optionally, each rapping shaft is equipped with a rapping motor to drive its rotation. There are multiple rapping motors, each with a different output speed. While this technical solution allows multiple rapping motors to drive multiple rapping shafts at different speeds, existing technologies use metal striking plates and rigid impact rapping methods. The electrode plates are in direct contact with the striking plates, leading to dust accumulation and electrostatic adsorption, which can easily cause rigid jamming, requiring frequent shutdowns for cleaning. This method is neither safe nor practical. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, a method for vibrating the electrode plates of an electrostatic precipitator based on linkage control is provided. This method addresses the problems of existing technologies that use metal striking plates and rigid impacts for vibration, where the electrode plates are in direct contact with the striking plates, leading to dust accumulation and electrostatic adsorption that can cause rigid jamming, requiring frequent shutdowns for cleaning, which is not safe or practical.

[0005] To achieve the above objectives, a method for vibrating the electrode plates of an electrostatic precipitator based on linkage control is provided, the method comprising the following steps: (1) A front dust filter chamber is provided at the front of the dust collector. The first motor drives the movable nut to move up and down through the screw, which drives the mounting plate and the three sets of knocking structures to vibrate synchronously and vertically, so as to realize the linkage control of single motor driving multiple sets of rapping. (2) The partition of the electrostatic dust removal chamber is equipped with multiple sets of slots. The lower ends of the cathode plate and anode plate are fitted into the slots. At the same time, the partition is opened with a dust discharge port to support the entire plate to be pulled out from the slot. The dust discharge port can directly clean the dust accumulated at the bottom of the plate.

[0006] (3) The groove of the striking plate is fitted with a silicone rubber anti-jamming plastic strip. Through the elastic deformation characteristics of silicone rubber, the impact force is buffered when the electrode plate is vibrated, so as to avoid the electrode plate and the striking plate from being rigidly jammed due to dust accumulation and electrostatic adsorption.

[0007] A method for vibrating the electrode plates of an electrostatic precipitator based on linkage control is disclosed. The precipitator has a front dust filter chamber at the front, and a first frame is installed inside the front dust filter chamber. An air inlet chamber is located at the front end of the front dust filter chamber, and a filter screen is fitted at the front port of the air inlet chamber. A middle electrostatic precipitator chamber is located on the upper side of the middle part of the precipitator, and multiple sets of cathode plates and anode plates are installed inside the middle electrostatic precipitator chamber. An outer cover plate is located above the middle electrostatic precipitator chamber, and a first motor is installed at the front part inside the outer cover plate. A lead screw is installed at the output end of the first motor, and a movable nut is movably connected to the lead screw. A mounting plate is located at the lower end of the movable nut, and three sets of knocking structures are installed at the lower end of the mounting plate.

[0008] Furthermore, a second frame is installed inside the air intake chamber, and multiple sets of front exhaust fans are installed on the second frame. The filter bag is a detachable structure, and a purification chamber is opened at the rear of the dust collector. An air outlet is provided at the rear end of the purification chamber, and multiple sets of rear exhaust fans are installed in the air outlet.

[0009] Furthermore, multiple sets of dust filter bags are installed on the first frame, with the front end of the dust filter bags facing the front of the first frame, and the front space of the first frame is connected to the space inside the air intake chamber.

[0010] Furthermore, the left and right parts of the lead screw are rotatably connected in the left and right bushings, respectively, and the striking structure is provided with a hanger. A second motor is fixed at the lower part of the hanger. A second rotating shaft is installed in the output end of the second motor, and multiple sets of striking plates are fixed on the second rotating shaft. The outer end of the striking plate is provided with a recess, and an anti-jamming plastic strip is embedded in the recess. Multiple sets of fastening bolts are installed between the second motor and the anti-jamming plastic strip, and the anti-jamming plastic strip is made of silicone rubber.

[0011] Furthermore, a storage chamber is provided on the lower middle side of the dust collector, and a storage compartment is embedded in the storage chamber. An inlet and outlet are provided on the left side of the storage chamber, and a partition is provided between the electrostatic dust removal chamber and the storage chamber. The partition is provided with multiple sets of slots and dust discharge ports, and the lower ends of the cathode plate and anode plate are embedded in the slots.

[0012] Furthermore, the interior of the cleanroom is equipped with a first cleanroom plate, a second cleanroom plate, and a third cleanroom plate in sequence from front to back, and the cleanroom is connected to the air outlet, the cleanroom to the intermediate electrostatic precipitator, and the intermediate electrostatic precipitator to the front dust filter.

[0013] The beneficial effects of this invention are as follows: 1. The air intake chamber of this invention is equipped with a detachable filter bag to intercept large dust particles; the front dust filter chamber and the purification chamber are respectively equipped with a front exhaust fan and a rear exhaust fan, forming a full-process negative pressure control of air intake-filtration-dust removal-emission, reducing the secondary re-entrainment of dust inside the device, and reducing the risk of electrode plate jamming from the source.

[0014] 2. In this invention, the first motor drives the movable nut to move up and down via a lead screw, thereby causing the mounting plate and the three sets of striking structures to vibrate synchronously and vertically. This achieves linkage control of multiple sets of rapping driven by a single motor, avoiding the problem of traditional devices requiring a separate motor for each set of electrode plates. Moreover, the hardware layout of multiple sets of rapping improves the efficiency of cleaning dust accumulation on the surface of the electrode plates.

[0015] 3. The partition of the electrostatic dust removal chamber in this invention is provided with multiple sets of slots. The lower ends of the cathode plate and anode plate are fitted into the slots. At the same time, the partition has a dust discharge port, which supports the entire plate being pulled out of the slot. The dust discharge port can directly clean the dust accumulated at the bottom of the plate, realizing integrated and rapid maintenance of the plate and dust accumulation. Attached Figure Description

[0016] Figure 1 This is a rendering of a dust collector according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing the internal structure of the dust collector according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the electrostatic dust removal chamber in an embodiment of the present invention; Figure 4 This is a schematic diagram of the striking structure according to an embodiment of the present invention.

[0017] In the diagram: 1. Dust collector; 10. Air inlet chamber; 11. Filter bag; 12. Second frame; 13. Front exhaust fan; 14. Outer cover; 15. Front dust filter chamber; 16. Electrostatic precipitator chamber; 160. Cathode plate; 161. Anode plate; 162. Partition; 163. Slot; 164. Dust collection port; 165. Storage chamber; 166. Storage bin; 17. Clean chamber; 170. First clean plate; 171. Second clean plate; 172. Third purification plate; 18. Air outlet; 180. Rear exhaust fan; 2. First frame; 20. Dust filter bag; 3. First motor; 30. Lead screw; 31. Left bushing; 32. Right bushing; 33. Mounting plate; 34. Movable nut; 35. Hammering structure; 36. Hanger; 37. Second motor; 370. Second rotating shaft; 371. Hammering plate; 372. Insert; 38. Fastening bolt; 39. Anti-jamming plastic strip. Detailed Implementation

[0018] Reference Figures 1 to 4 As shown, the present invention provides a method for vibrating the electrode plates of an electrostatic precipitator based on linkage control, the method comprising the following steps: (1) A front dust filter chamber is provided at the front of the dust collector. The first motor drives the movable nut to move up and down through the screw, which drives the mounting plate and the three sets of knocking structures to vibrate synchronously and vertically, so as to realize the linkage control of single motor driving multiple sets of rapping. (2) The partition of the electrostatic dust removal chamber is equipped with multiple sets of slots. The lower ends of the cathode plate and anode plate are fitted into the slots. At the same time, the partition is opened with a dust discharge port to support the entire plate to be pulled out from the slot. The dust discharge port can directly clean the dust accumulated at the bottom of the plate.

[0019] (3) The groove of the striking plate is fitted with a silicone rubber anti-jamming plastic strip. Through the elastic deformation characteristics of silicone rubber, the impact force is buffered when the electrode plate is vibrated, so as to avoid the electrode plate and the striking plate from being rigidly jammed due to dust accumulation and electrostatic adsorption.

[0020] A method for vibrating the electrode plates of an electrostatic precipitator based on linkage control includes a dust collector 1 and a striking structure 35. The dust collector 1 has a front dust filter chamber 15 at its front end, and a first frame 2 is installed inside the front dust filter chamber 15. An air inlet chamber 10 is provided at the front end of the front dust filter chamber 15, and a filter bag 11 is fitted at the front port of the air inlet chamber 10. A middle electrostatic precipitator chamber 16 is provided on the upper side of the middle part of the dust collector 1, and multiple sets of cathode plates 160 and anode plates 161 are installed inside the middle electrostatic precipitator chamber 16. An outer cover plate 14 is provided above the middle electrostatic precipitator chamber 16, and a first motor 3 is installed at the front part inside the outer cover plate 14. A lead screw 30 is installed in the output end of the first motor 3, and a movable nut 34 is movably connected to the lead screw 30. A mounting plate 33 is provided at the lower end of the movable nut 34, and three sets of striking structures 35 are installed at the lower end of the mounting plate 33.

[0021] In this embodiment, a second frame 12 is installed inside the air intake chamber 10, and multiple sets of front exhaust fans 13 are installed on the second frame 12. The filter bag 11 is a detachable structure, and a purification chamber 17 is opened at the rear of the dust collector 1. An air outlet 18 is provided at the rear end of the purification chamber 17, and multiple sets of rear exhaust fans 180 are installed inside the air outlet 18. Multiple sets of dust filter bags 20 are installed on the first frame 2, and the front end of the dust filter bag 20 faces the front of the first frame 2. The front space of the first frame 2 is connected to the space inside the air intake chamber 10.

[0022] As a preferred embodiment, the air intake chamber of this invention is equipped with a detachable filter bag to intercept large dust particles; the front dust filter chamber and the purification chamber are respectively equipped with a front exhaust fan and a rear exhaust fan, forming a full-process negative pressure control of air intake-filtration-dust removal-emission, reducing the secondary re-entrainment of dust inside the device, and reducing the risk of electrode plate jamming from the source.

[0023] In this embodiment, the left and right parts of the lead screw 30 are rotatably connected in the left bushing 31 and the right bushing 32, respectively. A hanger 36 is provided on the striking structure 35. A second motor 37 is fixed at the lower part of the hanger 36. A second rotating shaft 370 is installed in the output end of the second motor 37. Multiple sets of striking plates 371 are fixed on the second rotating shaft 370. The outer end of the striking plate 371 is provided with a recess 372. An anti-jamming plastic strip 39 is embedded in the recess 372. Multiple sets of fastening bolts 38 are installed between the second motor 37 and the anti-jamming plastic strip 39. The anti-jamming plastic strip 39 is made of silicone rubber.

[0024] As a preferred embodiment, the first motor in this invention drives the movable nut to move up and down via a lead screw, thereby causing the mounting plate and the three sets of striking structures to vibrate synchronously and vertically. This achieves linkage control of multiple sets of rapping driven by a single motor, avoiding the problem of traditional devices requiring a separate motor for each set of electrode plates. Moreover, the hardware layout of multiple sets of rapping improves the efficiency of cleaning dust accumulation on the surface of the electrode plates.

[0025] In this embodiment, a storage chamber 165 is provided on the lower side of the middle part of the dust collector 1. A storage bin 166 is embedded in the storage chamber 165. An inlet and outlet are provided on the left side of the storage chamber 165. A partition 162 is provided between the electrostatic precipitator 16 and the storage chamber 165. The partition 162 is provided with multiple sets of slots 163 and dust collection ports 164. The lower ends of the cathode plate 160 and the anode plate 161 are embedded in the slots 163. The purification chamber 17 is equipped with a first purification plate 170, a second purification plate 171 and a third purification plate 172 in sequence from front to back. The purification chamber 17 is connected to the air outlet 18, the purification chamber 17 is connected to the electrostatic precipitator 16, and the electrostatic precipitator 16 is connected to the front filter chamber 15.

[0026] In a preferred embodiment, the partition of the electrostatic dust removal chamber in this invention is provided with multiple sets of slots, and the lower ends of the cathode plate and anode plate are fitted into the slots. At the same time, the partition has a dust discharge port, which supports the entire electrode plate to be pulled out from the slot. The dust discharge port can directly clean the dust accumulated at the bottom of the electrode plate, realizing integrated and rapid maintenance of the electrode plate and dust accumulation.

[0027] This invention effectively solves the problems of existing technologies that use metal striking plates and rigid impacts for vibration, where the electrode plate is in direct contact with the striking plate, dust accumulation and electrostatic adsorption can easily lead to rigid jamming, requiring frequent shutdowns for cleaning, which is not safe or practical. This invention uses a silicone rubber anti-jamming plastic strip embedded in the groove of the striking plate. Through the elastic deformation properties of silicone rubber, the impact force is buffered during electrode plate vibration, preventing rigid jamming caused by dust accumulation and electrostatic adsorption between the electrode plate and the striking plate. At the same time, the self-lubricating properties of silicone rubber can reduce the coefficient of friction between the electrode plate and the vibration components, solving the defects of high vibration resistance and frequent jamming from a hardware perspective, making it more convenient, stable and practical.

Claims

1. A method for vibrating the electrode plates of an electrostatic precipitator based on linkage control, characterized in that: The method includes the following steps: (1) A front dust filter chamber is provided at the front of the dust collector. The first motor drives the movable nut to move up and down through the screw, which drives the mounting plate and the three sets of knocking structures to vibrate synchronously and vertically, so as to realize the linkage control of single motor driving multiple sets of rapping. (2) The partition of the electrostatic dust removal chamber is equipped with multiple sets of slots. The lower ends of the cathode plate and anode plate are fitted into the slots. At the same time, the partition is opened with a dust discharge port to support the entire plate to be pulled out from the slot. The dust discharge port can directly clean the dust accumulated at the bottom of the plate.

2. (3) The groove of the striking plate is fitted with a silicone rubber anti-jamming plastic strip. Through the elastic deformation characteristics of silicone rubber, the impact force is buffered when the electrode plate is vibrated, so as to avoid the electrode plate and the striking plate from being rigidly jammed due to dust accumulation and electrostatic adsorption.

3. The electrostatic precipitator plate rapping method based on linkage control according to claim 1, characterized in that: The dust collector (1) is provided with a front dust filter chamber (15) and a first frame (2) is installed in the front dust filter chamber (15). The front end of the front dust filter chamber (15) is provided with an air inlet chamber (10) and a filter screen (11) is fitted at the front port of the air inlet chamber (10). The middle part of the dust collector (1) is provided with a middle electrostatic dust removal chamber (16) and multiple sets of cathode plates (160) and anode plates (161) are installed in the middle electrostatic dust removal chamber (16). An outer cover plate (14) is provided above the middle electrostatic dust removal chamber (16) and a first motor (3) is installed in the front part of the outer cover plate (14). A lead screw (30) is installed in the output end of the first motor (3) and a movable nut (34) is movably connected to the lead screw (30). A mounting plate (33) is provided at the lower end of the movable nut (34) and three sets of knocking structures (35) are installed at the lower end of the mounting plate (33).

4. The electrostatic precipitator electrode plate rapping method based on linkage control according to claim 2, characterized in that, The air intake chamber (10) is equipped with a second frame (12), and multiple sets of front exhaust fans (13) are installed on the second frame (12). The filter bag (11) is a detachable structure. A purification chamber (17) is opened at the rear of the dust collector (1), and an air outlet (18) is provided at the rear end of the purification chamber (17). Multiple sets of rear exhaust fans (180) are installed in the air outlet (18).

5. The electrostatic precipitator electrode plate rapping method based on linkage control according to claim 3, characterized in that, Multiple sets of dust filter bags (20) are installed on the first frame (2), and the front port of the dust filter bag (20) faces the front of the first frame (2), and the front space of the first frame (2) is connected to the space inside the air intake chamber (10).

6. The electrostatic precipitator plate rapping method based on linkage control according to claim 4, characterized in that, The left and right parts of the lead screw (30) are rotatably connected in the left bushing (31) and the right bushing (32), respectively. A hanger (36) is provided on the striking structure (35). A second motor (37) is fixed at the lower part of the hanger (36). A second rotating shaft (370) is installed in the output end of the second motor (37). Multiple sets of striking plates (371) are fixed on the second rotating shaft (370). A slot (372) is opened at the outer end of the striking plate (371). An anti-jamming plastic strip (39) is embedded in the slot (372). Multiple sets of fastening bolts (38) are installed between the second motor (37) and the anti-jamming plastic strip (39). The anti-jamming plastic strip (39) is made of silicone rubber.

7. The electrostatic precipitator plate rapping method based on linkage control according to claim 5, characterized in that, The dust collector (1) has a storage chamber (165) on the lower side of the middle part. The storage chamber (165) contains a storage bin (166). The storage chamber (165) has an inlet and outlet on the left side. A partition (162) is provided between the electrostatic dust removal chamber (16) and the storage chamber (165). The partition (162) has multiple sets of slots (163) and dust outlets (164). The lower ends of the cathode plate (160) and the anode plate (161) are fitted into the slots (163).

8. The method for vibrating the electrode plates of an electrostatic precipitator based on linkage control according to claim 6, characterized in that, The interior of the purification chamber (17) is equipped with a first purification plate (170), a second purification plate (171) and a third purification plate (172) in sequence from front to back. The purification chamber (17) is connected to the air outlet (18), the purification chamber (17) is connected to the middle electrostatic precipitator (16), and the middle electrostatic precipitator (16) is connected to the front dust filter chamber (15).

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