Electrostatic dust collection device for fused quartz crushing

Abstract

An electrostatic dust collection device for fused quartz crushing comprises a dust collection cover and electrostatic dust collection units, the electrostatic dust collection units are arranged in a sliding mode and are driven to generate reciprocating vibration during working, and the adjacent electrostatic dust collection units are arranged in a sealed and attached mode; the electrostatic dust collection unit comprises a plurality of electrostatic plates arranged at intervals, the opposite side surfaces of the adjacent electrostatic plates are each provided with a straight-edge section and a wave section, the opposite wave sections form a dust collection cavity channel with a plurality of bent paths, and the straight-edge sections are arranged at air inlet ports and air outlet ports of the wave sections correspondingly. According to the wave-shaped electrostatic plate structure, a flat direct current field formed by a traditional plate electrode is effectively changed, the blocking and disturbance effects on airflow are remarkably enhanced, the retention time of dust-containing air in the electric field is greatly prolonged, and therefore the interception and adsorption efficiency on fine dust is remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of dust removal technology, specifically referring to an electrostatic dust removal device for crushing fused silica. Background Technology

[0002] During the crushing and processing of fused silica, a large amount of micron- and submicron-sized silica dust is generated. Currently, electrostatic precipitators are commonly used for dust removal in this process, with flat-plate dust collection electrodes as their core component. However, the straight flow channels created by this traditional structure have limited ability to impede high-concentration, high-velocity dust-laden airflow. This results in insufficient residence time for a large amount of lightweight, easily dispersed silica dust in the electric field, causing it to penetrate the dust collection area directly before being effectively captured, severely impacting dust removal efficiency.

[0003] Current improvements to the electrode structure often struggle to balance increased airflow disturbance with controlled pressure drop. More significantly, current self-cleaning systems (such as rapping dust removal) require equipment shutdown. This intermittent cleaning mode necessitates interrupting continuous operation of the crushing line, drastically reducing production efficiency. Furthermore, if the high-hardness quartz dust accumulated on the electrode during shutdown is not promptly removed, it easily forms a hard insulating layer, exacerbating back corona discharge and leading to increased energy consumption and performance degradation upon restarting. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides an electrostatic dust removal device for crushing fused silica, which at least partially solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes an electrostatic dust removal device for crushing fused silica, including a dust removal hood and a plurality of electrostatic dust removal units disposed in the dust removal hood. The electrostatic dust removal units are slidably disposed and are driven to generate reciprocating vibration during operation. The electrostatic dust removal units are adjacent to each other and are arranged in a sealed and fitted manner. The electrostatic dust removal unit includes multiple spaced electrostatic plates. The opposite side surfaces of adjacent electrostatic plates each have straight edge sections and wavy sections. The opposite wavy sections form a dust removal cavity with multiple bends. The straight edge sections are respectively located at the air inlet and air outlet of the wavy sections.

[0006] Furthermore, the electrostatic plate has a chamfered structure at the end of the straight edge section facing the feed port.

[0007] Furthermore, the electrostatic dust removal unit also includes a housing, which is driven to slide back and forth, and the electrostatic plate is embedded in the housing. The housing and the dust removal cover are connected by a return spring.

[0008] Furthermore, a sliding plate is provided on the side wall of the housing, the sliding plate is slidably disposed inside the dust removal cover, a reset plate is provided on the outer side wall of the sliding plate, and a reset spring is connected between the reset plate and the dust removal cover.

[0009] Furthermore, the dust removal hood is provided with multiple evenly distributed sliding grooves, and a reset groove is provided on the outer side of the sliding groove. The sliding plate is slidably disposed in the sliding groove, the reset plate is slidably disposed in the reset groove, a pressure cap is installed at the upper end of the reset groove, and the reset spring is accommodated inside the reset groove.

[0010] Furthermore, the upper end of the slide plate is provided with a sealing groove, a sealing plate is slidably disposed in the sealing groove, and a sealing spring is connected between the sealing plate and the sealing groove.

[0011] Furthermore, a support plate is provided above the dust removal hood, a motor is provided in the support plate, a vibrating plate is provided at the output shaft end of the motor, a protrusion is provided on the vibrating plate, and a trigger block is provided on the side wall of the housing. When the protrusion rotates with the vibrating plate, it periodically contacts and drives the trigger block, causing the housing to vibrate.

[0012] Furthermore, the housing has a first blocking plate on the lower side near the center of the dust hood and a second blocking plate on the upper side, with the motor's output shaft passing through the center of the second blocking plate.

[0013] Furthermore, a filter screen is installed on the side of the dust hood facing the air inlet.

[0014] Furthermore, the dust removal hood is equipped with a clamping plate, and a detection frame is rotatably mounted in the clamping plate. The detection frame is connected to the output shaft of the motor via a key, and electrostatic bars are respectively provided on both sides of the detection frame.

[0015] The beneficial effects achieved by this invention are as follows: The corrugated electrostatic plate structure effectively changes the flat DC field formed by traditional flat plate electrodes, significantly enhancing the obstruction and disturbance effect on airflow, greatly extending the residence time of dust-laden air in the electric field, thereby significantly improving the interception and adsorption efficiency of fine dust; at the same time, the trigger block causes the electrostatic plate to generate continuous micro-vibration during operation, realizing online self-cleaning function, effectively preventing efficiency decay caused by dust accumulation, and avoiding the drawback of traditional equipment that must be shut down for cleaning. Attached Figure Description

[0016] Figure 1 This is an exploded view of an electrostatic dust removal device for crushing fused silica according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of an electrostatic dust removal device for crushing fused silica according to an embodiment of the present invention; Figure 3 This is a schematic diagram showing the position and structure of the clamp and the inspection frame; Figure 4This is a top view of each electrostatic precipitator unit inside the dust collector hood; Figure 5 This is a schematic diagram of the electrostatic precipitator unit. Figure 6 This is a cross-sectional view of the dust collector hood; Figure 7 This is a non-scale sectional view of the dust removal hood and the electrostatic dust removal unit.

[0017] Among them, 1. Dust hood, 2. Clamping plate, 3. Support plate, 4. Motor, 5. Vibrating plate, 6. Protrusion, 7. Detection frame, 8. Electrostatic bar, 9. Filter screen, 10. First blocking plate, 11. Second blocking plate, 12. Electrostatic dust removal unit, 13. Pressure cover, 14. Housing, 15. Electrostatic plate, 16. Trigger block, 17. Slide plate, 18. Reset plate, 19. Sealing groove, 20. Slide groove, 21. Reset groove, 22. Sealing plate, 23. Sealing spring, 24. Reset spring, 25. Straight edge section, 26. Wavy section, 27. Chamfered structure.

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on this invention.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 7As shown in the figure, an electrostatic dust removal device for crushing fused silica proposed in this embodiment of the invention includes a dust removal hood 1 and multiple electrostatic dust removal units 12 disposed within the dust removal hood 1. The electrostatic dust removal units 12 are slidably disposed and reciprocate under drive during operation. Adjacent electrostatic dust removal units 12 are arranged in a sealed fit. During operation, the dust removal hood 1 is fastened above the crusher and connected to an air pump. The dust generated in the crushing process is drawn away by negative pressure. When the dust flows, it passes through the electrostatic dust removal units 12. After the electrostatic dust removal units 12 are energized, the dust airflow is ionized under the action of a strong electric field, forming particles with positive and negative charges respectively. The positive and negative particles move to both sides under the action of the electric field and are adsorbed by the electrostatic dust removal units 12, thereby separating the dust from the gas. While adsorbing particles, the electrostatic dust removal units 12 can also reciprocate and vibrate, shaking off large particles accumulated on the surface through vibration, effectively preventing the efficiency reduction caused by dust accumulation and avoiding the disadvantage of traditional equipment requiring shutdown for cleaning.

[0022] Furthermore, to avoid interference from strong airflow on the electrostatic field, which would cause dust particles to overcome the adsorption force of the electrostatic field under the action of airflow and directly detach from the electrostatic dust removal unit 12, in this embodiment, the electrostatic dust removal unit 12 includes multiple spaced electrostatic plates 15. The opposite side surfaces of adjacent electrostatic plates 15 each have straight edge sections 25 and wavy sections 26, and the opposite wavy sections 26 form a dust removal channel with multiple bends. The straight edge sections 25 are respectively located at the air inlet and air outlet of the wavy sections 26. When the dust-laden airflow enters the dust removal channel between the electrostatic plates 15 from the lower straight edge section 25, the airflow will collide with the inclined cavity wall formed by the wavy sections 26 and force the airflow to turn, causing the airflow to flow along the inclined direction of the wavy sections 26, thereby interrupting the straight and smooth flow of the airflow, enhancing the obstruction and disturbance effect on the airflow, and greatly extending the residence time of the dust-laden airflow in the electric field, thereby significantly improving the interception and adsorption efficiency of fine dust.

[0023] In some embodiments, the turning points of the wave sections 26 of each electrostatic plate 15 are chamfered. Although the wave sections 26 can change the direction of airflow, they will still generate a certain amount of turbulence. The chamfered structure 27 can mitigate the effects of turbulence and make the airflow turn more smoothly.

[0024] In some embodiments, in order to maximize the collection of dust airflow below the dust hood 1, the electrostatic plate 15 is provided with a chamfered structure 27 at the end of the straight edge section 25 facing the feed port, so as to make the opening area of ​​the dust removal cavity larger, thereby reducing the impact of the space occupied by the electrostatic plate 15 on the suction airflow and making the suction area closer to the area of ​​the dust hood 1.

[0025] In some embodiments, such as Figure 4 and Figure 5As shown, the electrostatic dust removal unit 12 also includes a housing 14, which slides back and forth under drive. An electrostatic plate 15 is embedded in the housing 14. The housing 14 is connected to the dust removal hood 1 by a return spring 24. A sliding plate 17 is provided on the side wall of the housing 14, which slides inside the dust removal hood 1. A return plate 18 is provided on the outer side wall of the sliding plate 17. The return spring 24 is connected between the return plate 18 and the dust removal hood 1. Specifically, after the housing 14 is driven, it will overcome the resistance of the return spring 24 and move upward. When the housing 14 is no longer driven, the return spring 24 will force the housing 14 to slide downward, thereby causing the housing 14 to vibrate up and down, and finally drive the electrostatic plate 15 to vibrate up and down. During the dust removal operation, the electrostatic plate 15 will also vibrate and peel off the accumulated material on its surface, thereby achieving a self-cleaning effect.

[0026] Furthermore, when the housing 14 vibrates, to prevent dust from flowing into the sliding channel between it and the dust collector 1, it is necessary to ensure that the sliding channel between the housing 14 and the dust collector 1 remains sealed at all times, such as... Figure 6 and Figure 7 As shown, the dust collector hood 1 is provided with multiple evenly distributed sliding grooves 20. The outer side of the sliding groove 20 is provided with a reset groove 21. The sliding plate 17 is slidably disposed in the sliding groove 20, and the reset plate 18 is slidably disposed in the reset groove 21. A pressure cover 13 is installed at the upper end of the reset groove 21. The reset spring 24 is accommodated inside the reset groove 21. The upper end of the sliding plate 17 is provided with a sealing groove 19. A sealing plate 22 is slidably disposed in the sealing groove 19. A sealing spring 23 is connected between the sealing plate 22 and the sealing groove 19.

[0027] Specifically, when the housing 14 moves upward, the sliding plate 17 moves along the slide groove 20. The sliding plate 17 is sealed to the slide groove 20. At the same time, the outer circumferential sidewall of the housing 14 is sealed to the inner circumferential sidewall of the dust collector hood 1. Therefore, the lower end of the slide groove 20 remains sealed, while a certain gap is always reserved between the upper end of the sliding plate 17 and the upper end of the slide groove 20 to ensure the sliding stroke of the housing 14. This gap is filled and sealed by the sealing plate 22 to ensure that the slide groove 20 and the reset groove 21 always remain sealed. When the housing 14 moves upward, the sealing plate 22 compresses the sealing spring 23. Under the pushing action of the sealing spring 23, the sealing plate 22 is always sealed and fitted against the upper wall of the slide groove 20 (i.e., the lower wall of the pressure cover 13). When the housing 14 moves downward, the sealing spring 23 causes the sealing plate 22 to slide in the sealing groove 19 and forces the sealing plate 22 to remain in contact with the upper end of the slide groove 20. Thus, when the housing 14 vibrates back and forth, the relative sliding area between the dust cover 1 and the housing 14 is always sealed and will not be penetrated by the dust airflow.

[0028] In some embodiments, such as Figure 1 and Figure 2As shown, a support plate 3 is provided above the dust removal hood 1, a motor 4 is provided in the support plate 3, a vibrating plate 5 is provided at the output shaft end of the motor 4, a protrusion 6 is provided on the vibrating plate 5, and a trigger block 16 is provided on the side wall of the housing 14. When the protrusion 6 rotates with the vibrating plate 5, it periodically contacts and drives the trigger block 16, causing the housing 14 to vibrate.

[0029] Furthermore, to prevent dust airflow from escaping upwards without electrostatic dust removal and affecting the working life of motor 4, a first blocking plate 10 is provided on the lower side of housing 14 near the center of dust hood 1, and a second blocking plate 11 is provided on the upper side. The output shaft of motor 4 is set through the center of the second blocking plate 11. The sealed space between the first blocking plate 10 and the second blocking plate 11 is separated from the airflow below dust hood 1, so that dust airflow can only enter the dust removal channel between electrostatic plates 15.

[0030] In some embodiments, such as Figure 1 As shown, a filter screen 9 is installed on the side of the dust collector hood 1 facing the air inlet. The filter screen 9 can perform preliminary filtration of the dust-laden airflow generated during the crushing of molten quartz, effectively intercepting larger particles. Since the dust removal efficiency of the electrostatic dust removal unit 12 for larger particles is relatively low, and such particles can easily accelerate the wear of the electrostatic plate 15, by setting the filter screen 9 for pre-filtration, the proportion of large particles entering the electrostatic field can be significantly reduced, thereby extending the service life of the electrostatic dust removal unit 12. In specific implementation, the filter screen 9 can be set as a single-layer or multi-layer structure to meet the filtration requirements under different working conditions.

[0031] In some embodiments, such as Figure 1 and Figure 3 As shown, a clamping plate 2 is provided on the dust removal hood 1, and a detection frame 7 is rotatably mounted in the clamping plate 2. The detection frame 7 is connected to the output shaft of the motor 4 by a key. Electrostatic bars 8 are provided on both sides of the detection frame 7 to collect residual dust in the airflow after it has been processed by the electrostatic dust removal unit 12 in real time.

[0032] In this device, the electrostatic plate 15 continuously performs electrostatic dust removal while simultaneously engaging in online self-cleaning. Its effective working time far exceeds that of conventional electrostatic dust removal equipment. To monitor the working status of the electrostatic plate 15 in real time, the amount of dust adhering to the electrostatic rod 8 can be used for judgment: if there is little dust adhering to the surface of the electrostatic rod 8, it indicates that the dust removal efficiency of the electrostatic plate 15 is still at a high level and the self-cleaning mechanism is effective; if the dust adhering to the surface of the electrostatic rod 8 increases significantly, it reflects that the overall dust removal performance of the electrostatic plate 15 has decreased, and the self-cleaning mechanism is no longer sufficient to maintain its original working efficiency. In this case, it is necessary to arrange for shutdown and disassembly for cleaning.

[0033] In addition, the electrostatic bar 8 reciprocates with the detection frame 7 under the drive of the motor 4, which can cover a large area of ​​the dust removal hood 1 outlet and realize extensive sampling of the outflowing air. This design effectively avoids the problem of overall judgment inaccuracy caused by the abnormal or normal state of a local single electrostatic plate 15, and improves the comprehensiveness and reliability of state monitoring.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An electrostatic dust removal device for crushing fused silica, characterized in that: It includes a dust collection hood (1) and multiple electrostatic dust removal units (12). The electrostatic dust removal units (12) are slidably disposed inside the dust collection hood (1) and are driven to reciprocate during operation. The electrostatic dust removal units (12) are adjacent to each other and are arranged in a sealed and fitted manner. The electrostatic dust removal unit (12) includes multiple electrostatic plates (15) spaced apart. The opposite side surfaces of adjacent electrostatic plates (15) each have a straight edge section (25) and a wave section (26). The opposite wave section (26) forms a dust removal cavity with multiple bends. The straight edge section (25) is respectively located at the air inlet and air outlet of the wave section (26).

2. The electrostatic dust removal device for crushing fused silica according to claim 1, characterized in that: The electrostatic plate (15) has a chamfered structure (27) at the end of the straight edge section (25) facing the feed port.

3. The electrostatic dust removal device for crushing fused silica according to claim 1, characterized in that: The electrostatic dust removal unit (12) also includes a housing (14), which is driven to slide back and forth. The electrostatic plate (15) is embedded in the housing (14), and the housing (14) and the dust removal cover (1) are connected by a return spring (24).

4. The electrostatic dust removal device for crushing fused silica according to claim 3, characterized in that: The side wall of the housing (14) is provided with a sliding plate (17), which is slidably disposed inside the dust cover (1). The outer side wall of the sliding plate (17) is provided with a reset plate (18), and the reset spring (24) is connected between the reset plate (18) and the dust cover (1).

5. The electrostatic dust removal device for crushing fused silica according to claim 4, characterized in that: The dust cover (1) is provided with a plurality of evenly distributed sliding grooves (20), and a reset groove (21) is provided on the outside of the sliding groove (20). The sliding plate (17) is slidably disposed in the sliding groove (20), and the reset plate (18) is slidably disposed in the reset groove (21). A pressure cover (13) is installed at the upper end of the reset groove (21), and the reset spring (24) is accommodated inside the reset groove (21).

6. The electrostatic dust removal device for crushing fused silica according to claim 5, characterized in that: The upper end of the slide plate (17) is provided with a sealing groove (19), and a sealing plate (22) is slidably provided in the sealing groove (19). A sealing spring (23) is connected between the sealing plate (22) and the sealing groove (19).

7. The electrostatic dust removal device for crushing fused silica according to claim 3, characterized in that: A support plate (3) is provided above the dust removal hood (1), and a motor (4) is provided in the support plate (3). A vibrating plate (5) is provided at the output shaft end of the motor (4). A protrusion (6) is provided on the vibrating plate (5). A trigger block (16) is provided on the side wall of the housing (14). When the protrusion (6) rotates with the vibrating plate (5), it periodically contacts and drives the trigger block (16), causing the housing (14) to vibrate.

8. The electrostatic dust removal device for crushing fused silica according to claim 7, characterized in that: The housing (14) has a first blocking plate (10) on the lower side near the center of the dust cover (1) and a second blocking plate (11) on the upper side. The output shaft of the motor (4) passes through the center of the second blocking plate (11).

9. The electrostatic dust removal device for crushing fused silica according to claim 1, characterized in that: The dust hood (1) has a filter screen (9) installed on the side facing the air inlet.

10. The electrostatic precipitator for crushing fused silica according to claim 7, characterized in that: The dust cover (1) is provided with a clamp (2), and a detection frame (7) is rotatably provided in the clamp (2). The detection frame (7) is connected to the output shaft of the motor (4) by a key. Electrostatic rods (8) are provided on both sides of the detection frame (7).

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