Detachable cathode frame and industrial lampblack purification equipment

Abstract

The invention discloses a detachable cathode frame and industrial lampblack purification equipment, the detachable cathode frame comprises a cathode frame and cathode needles, the cathode frame comprises a plurality of frames, each frame comprises a top beam and a bottom beam, the cross section of each frame is of a rhombic structure, and the bottom beam is provided with a plurality of first slots at intervals in the length direction; the cathode needle comprises two needle plates which are symmetrically arranged, and each needle plate is sequentially provided with a bending part, a needle part and an inserting part from top to bottom; barbs are arranged on the two sides of the needle part at intervals in the length direction of the needle part, the inserting part is correspondingly inserted into the first inserting groove of the bottom beam, and the bending part is attached to the side wall of the top beam and fixed to the side wall of the top beam in a riveted mode. According to the detachable cathode frame and the industrial oil fume purification equipment, detachable maintenance of the single cathode needle is achieved, and the detachable cathode frame and the industrial oil fume purification equipment are suitable for operation in a narrow space of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial fume purification equipment, and in particular to a detachable cathode rack and industrial fume purification equipment. Background Art

[0002] Industrial fume purification equipment typically utilizes the principle of electrostatic precipitation. When the cathode rack is connected to a high-voltage power supply, the cathode needles on the rack discharge through the tips, creating a high-voltage electric field between the cathode needles and the anode plates. This charges particles in the flue gas and attracts them to the anode plates, thereby purifying the flue gas. Because the tips of the cathode needles, as the core discharge component, are constantly under high-load discharge and susceptible to fume corrosion, they require regular replacement to maintain the equipment's purification efficiency.

[0003] Traditionally, cathode needles are constructed by welding square tubes and spiked strips to form a monolithic structure. These tubes are then individually welded to the cathode rack frame. This design has significant drawbacks in practical applications: Firstly, the cathode needles, constructed of square tubes and strips, are heavy, increasing the load on the cathode rack and affecting the stability of the mounting structure. Secondly, the welding creates a rigid, non-detachable connection between the cathode needles and the cathode rack. Damage to the local tip requires cutting and replacing the cathode needle, a complex process that is difficult to perform within the confined space within the equipment.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a detachable cathode rack and industrial fume purification equipment, aiming to solve the technical problems in the prior art that the cathode needles cannot be disassembled and are difficult to maintain due to welding fixation.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A detachable cathode frame, comprising:

[0008] The cathode frame comprises a plurality of frames, each frame comprising a top beam and a bottom beam both having a diamond-shaped cross section, wherein the bottom beam is provided with a plurality of first slots spaced apart along a length direction;

[0009] The cathode needle includes two symmetrically arranged needle plates, each of which is provided with a bending part, a needle part and a plug-in part in sequence from top to bottom; burrs are provided at intervals on both sides of the needle part along its length direction, the plug-in part is inserted into the first slot of the bottom beam, and the bending part is in contact with the side wall of the top beam and fixed by riveting.

[0010] Furthermore, the width of the plug-in portion gradually decreases from top to bottom along the vertical direction; and the bent portion includes at least one first bent piece that is in contact with the side wall of the top beam.

[0011] Furthermore, a second bending piece is provided at the lower end of the needle portion, and the plug-in portion is located inside the second bending piece; the plug-in portion and the second bending piece are on the same vertical plane in the original unbent state and a gap is left. After bending and forming, the second bending piece abuts against the side wall of the bottom beam.

[0012] Furthermore, a transition portion that can be inserted into the first slot is provided between the needle portion and the plug-in portion; the top beam is provided with second slots that pass through its top and bottom at intervals along the length direction; an insertion portion that is plugged into the second slot is provided between the needle portion and the bending portion, and the bending portion includes a third bending piece that is in contact with the upper side wall of the top beam.

[0013] Furthermore, a fourth bending piece is provided in the insertion portion, and the fourth bending piece abuts against the lower side wall of the top beam.

[0014] Furthermore, a bending groove is provided on a side of the bending portion close to the needle portion.

[0015] Furthermore, the needle portion is provided with two groups of holes, each group of holes includes a number of hollow holes spaced apart along the length direction of the needle plate, each thorn extends outward from the corresponding hollow hole, the two rows of hole groups are arranged facing each other, and the hollow holes in the hole groups are staggered with each other.

[0016] Furthermore, both sides of the needle portion are provided with curling edges, and the distance between the two curling edges on one needle plate is greater than the distance between the two curling edges on the other needle plate.

[0017] Furthermore, the cathode frame also includes two parallel beams and several vertical bars connecting the two beams, and each two frames are symmetrically arranged on both sides of a vertical bar; two mounting seats are provided on the vertical bar, and each mounting seat is provided with a column respectively plugged into the end of the top beam and the bottom beam.

[0018] An industrial oil fume purification device comprises a casing, an anode plate and the detachable cathode frame. A plurality of anode plates are arranged in the casing. The cathode frame is installed in the casing through an insulator. The plurality of anode plates and the plurality of frames are arranged at intervals.

[0019] Beneficial effects:

[0020] The present invention provides a detachable cathode frame and industrial oil fume purification equipment. The cathode needle is composed of two riveted needle plates. The plug-in part of the needle plate is inserted into the first slot of the bottom beam, so that the bottom end of the cathode needle is inserted first and forms a self-locking function. The bent part is riveted to the side wall of the top beam to achieve multi-point limit fixation, which can effectively suppress the displacement of the cathode needle and improve the installation stability. At the same time, the riveting facilitates disassembly and maintenance, and can be operated in a small space of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1A structural diagram of the detachable cathode frame provided by the present invention;

[0022] Figure 2 The structure of cathode needles in the detachable cathode frame provided by the present invention Figure 1 ;

[0023] Figure 3 A side cross-sectional view of the cathode needle in the detachable cathode holder provided by the present invention Figure 1 ;

[0024] Figure 4 The structure of the middle needle plate of the detachable cathode frame provided by the present invention Figure 1 ;

[0025] Figure 5 The structure of cathode needles in the detachable cathode frame provided by the present invention Figure 2 ;

[0026] Figure 6 A side cross-sectional view of the cathode needle in the detachable cathode holder provided by the present invention Figure 2 ;

[0027] Figure 7 The structure of the middle needle plate of the detachable cathode frame provided by the present invention Figure 2 ;

[0028] Figure 8 The structure of cathode needles in the detachable cathode frame provided by the present invention Figure 3 ;

[0029] Figure 9 The structure of the needle plate in the detachable cathode frame provided by the present invention Figure 3 ;

[0030] Figure 10 A top view of a cathode needle in a detachable cathode holder provided by the present invention Figure 1 ;

[0031] Figure 11 A top view of a cathode needle in a detachable cathode holder provided by the present invention Figure 2 ;

[0032] Figure 12 A partial exploded view of the detachable cathode frame provided by the present invention;

[0033] Figure 13 A top view of the industrial fume purification equipment provided by the present invention;

[0034] Figure 14 This is a structural diagram of the cathode rack in the industrial fume purification equipment provided by the present invention.

[0035] Reference numerals: cathode rack 10: frame 1, top beam 11, second slot 111, second through hole 112, fourth through hole 113, bottom beam 12, first slot 121, connecting beam 13, connecting ear 14, cathode needle 2, needle plate 21, bending portion 22, first bending piece 221, first through hole 2211, third bending piece 222, third through hole 2221, bending groove 223, needle portion 23, hollow hole 231, curling edge 232, plug-in portion 24, second bending piece 241, thorn 25, transition portion 26, insertion portion 27, fourth bending piece 271;

[0036] Crossbeam 3, vertical rod 31, mounting seat 4, plug post 41, housing 5, anode plate 6, insulator 7. DETAILED DESCRIPTION

[0037] The present invention provides a detachable cathode rack and industrial oil fume purification equipment. To make the objectives, technical solutions, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore, cannot be understood as limiting the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] See also Figures 1 to 12As shown, the present invention provides a detachable cathode rack, characterized by comprising a cathode rack 10 and a plurality of cathode needles 2. The cathode rack 10 comprises a plurality of frames 1, each frame 1 comprising a top beam 11 and a bottom beam 12, both of which have a diamond-shaped cross-section. The bottom beam 12 is provided with a plurality of first slots 121 spaced apart along its length. The cathode needles 2 comprise two symmetrically arranged needle plates 21, each of which is provided with a bend 22, a needle portion 23, and a plug-in portion 24, in order from top to bottom. The needle portions 23 are provided with barbs 25 spaced apart along their lengths. The plug-in portions 24 are inserted into the first slots 121 of the bottom beam 12, and the bends 22 are abutted against the sidewalls of the top beam 11 and secured by riveting. Specifically, the two needle plates 21 are secured by riveting, with the barbs 25 facing outward. The split design of the two needle plates 21 significantly reduces the weight of a single cathode needle 2, thereby alleviating the load-bearing capacity of the cathode rack 10.

[0040] During assembly, the plug-in parts 24 of the two needle plates 21 are inserted into the first slots 121 of the bottom beam 12. The bent parts 22 are bent to fit the side walls of the top beam 11, and the bent parts 22 are fixedly connected to the top beam 11 by rivets. The first slot 121 limits the left and right and front and back movement of the cathode needle 2. The bent parts 22 fit the side walls of the top beam 11 and are fixed by riveting, further restricting the up and down movement and ensuring the installation stability of the cathode needle 2. During maintenance, it is only necessary to cut off the rivets on the cathode needle 2 with a handheld cutting machine, separate the bent part 22 from the top beam 11, and then pull the cathode needle 2 upward. The operation does not require disassembly of the overall frame 1 and can be completed independently in the narrow space inside the equipment.

[0041] The connection structure between the cathode needle 2 and the frame 1 has the following implementations:

[0042] The first implementation method: See Figure 2 、 3 4. The width of the plug-in portion 24 gradually decreases from top to bottom in the vertical direction, and the opening length of the first slot 121 adapts to the width variation range of the plug-in portion 24, so that the bottom end of the plug-in portion 24 is preferentially inserted into the first slot 121, and the tapered structure suppresses the up and down movement of the cathode needle 2, thereby improving the installation stability.

[0043] The bending portion 22 includes at least one first bending piece 221 that is in contact with the side wall of the top beam 11: when the bending portion 22 has only one first bending piece 221, it is in contact with the lower side wall of the top beam 11 after bending; when the bending portion 22 includes two continuously bent first bending pieces 221, the upper first bending piece 221 is in contact with the upper side wall of the top beam 11, and the lower first bending piece 221 is in contact with the lower side wall of the top beam 11, forming a multi-point position locking, further enhancing the stability of the connection between the bending portion 22 and the top beam 11.

[0044] Specifically, see Figure 2 、 4 The first bent portion 221 has a first through-hole 2211, and the corresponding side wall of the top beam 11 has a second through-hole 112. Rivets are inserted through the first through-hole 2211 and the second through-hole 112 to secure the bent portion 22 to the top beam 11. This ensures connection strength while facilitating quick replacement of the cathode needle 2 by removing the rivets.

[0045] Further, see Figure 3 、 4 The lower end of the needle portion 23 is provided with a second bending piece 241, and the plug-in portion 24 is located inside the second bending piece 241; the plug-in portion 24 and the second bending piece 241 are in the same vertical plane in the original unbent state and leave a gap. After bending, the second bending piece 241 abuts against the side wall of the bottom beam 12. Specifically, the second bending piece 241 and the plug-in portion 24 are separated by a gap through stamping. This gap design allows the second bending piece 241 to be bent independently, and the bent second bending piece 241 and the plug-in portion 24 form an angle structure. During actual assembly, the plug-in portion 24 is inserted into the first slot 121 of the bottom beam 12. After being bent, the second bending pieces 241 on the two needle plates 21 abut against the two upper side walls of the bottom beam 12 respectively, forming a two-way limit, which effectively suppresses the forward and backward shaking of the cathode needle 2. Through the above arrangement, while ensuring the plug-in accuracy, the installation stability of the cathode needle 2 can be further enhanced.

[0046] Second implementation method: See Figure 5 、 67. A transition portion 26 that can be inserted into the first slot 121 is provided between the needle portion 23 and the plug-in portion 24. Specifically, the first slot 121 passes through the top and bottom of the bottom beam 12; the top beam 11 is provided with second slots 111 passing through the top and bottom thereof at intervals along the length direction; an insertion portion 27 that is plugged into the second slot 111 is provided between the needle portion 23 and the bending portion 22, and the bending portion 22 includes a third bending piece 222 that is in contact with the upper side wall of the top beam 11. During actual assembly, the plug-in portion 24 and transition portion 26 are inserted from top to bottom into the first slot 121, with the cathode needle 2 positioned entirely below the top beam 11. The bent portion 22 and insert portion 27 are then inserted from bottom to top into the second slot 111, embedding the insert portion 27 within the top beam 11. Simultaneously, the transition portion 26 moves upward, and the plug-in portion 24 moves into the bottom beam 12. Finally, the third bent piece 222 is bent outward to mate with the upper sidewall of the top beam 11 and secured by riveting. The first slot 121 and the second slot 111 jointly limit the forward, backward, and left-right movement of the cathode needle 2, while the third bent piece 222 is riveted to the top beam 11 to limit its up-and-down movement, achieving stable installation of the cathode needle 2. During disassembly, first remove the riveting between the third bending piece 222 and the top beam 11, fold the third bending piece 222 back to a vertical state, then pull the cathode needle 2 downward to disengage the insertion part 27 from the second slot 111, and then pull the cathode needle 2 upward to disengage the transition part 26 and the plug-in part 24 from the first slot 121 to complete the disassembly.

[0047] Specifically, see Figure 5 、 7 A third through hole 2221 is defined in the third bent piece 222, and a fourth through hole 113 is defined in a corresponding position on the upper sidewall of the top beam 11. Rivets are inserted through the third through hole 2221 and the fourth through hole 113 to secure the bent portion 22 to the top beam 11. This ensures connection strength while facilitating quick replacement of the cathode needle 2 by removing the rivets.

[0048] Further, see Figure 6 、 7, a fourth bending piece 271 is provided in the insertion portion 27, and the fourth bending piece 271 abuts against the lower side wall of the top beam 11. Specifically, the insertion portion 27 is formed with a fourth bending piece 271 therein by stamping, and the fourth bending piece 271 can be bent independently, and the bent fourth bending piece 271 forms an angle structure with the insertion portion 27. During actual assembly, when the plug-in portion 24 and the transition portion 26 are both inserted into the first slot 121, the cathode needle 2 is located below the top beam 11. At this time, the fourth bending pieces 271 on the two needle plates 21 are bent outward at a preset angle; then, when the third bending piece 222 and the insertion portion 27 are inserted into the second slot 111, the two fourth bending pieces 271 respectively form abutment limits with the two lower side walls of the top beam 11. Through the two-way contact constraint between the fourth bending piece 271 and the top beam 11, combined with the riveting fixation of the upper side wall of the third bending piece 222, multi-directional limiters are formed in the upper and lower directions and the front and back directions, which significantly enhances the anti-displacement ability of the cathode needle 2 and effectively suppresses the front and back shaking problem during operation.

[0049] In a preferred embodiment, see Figure 4 、 7 A bending groove 223 is provided on one side of the bending portion 22 close to the needle portion 23. The bending groove 223 serves as a positioning reference for the bending process and can guide the bending portion 22 to bend accurately along a predetermined trajectory during on-site assembly, thereby facilitating bending the bending portion 22 to fit the side wall of the top beam 11, simplifying the assembly operation, and improving the consistency and efficiency of the installation of the cathode needle 2.

[0050] In a preferred embodiment, see Figure 8 、 9 The needle portion 23 is formed with two sets of holes. Each set includes several hollow holes 231 spaced along the length of the needle plate 21. Each barb 25 extends outward from a corresponding hollow hole 231. Laser cutting is used to simultaneously remove the non-overlapping areas of the hollow holes 231 and their corresponding barbs 25 from the needle plate 21. Each barb 25 is then bent outward at a predetermined angle. This arrangement reduces the overall weight of the cathode needle 2.

[0051] The two rows of hole groups are arranged opposite to each other, and the hollow holes 231 in the hole groups are staggered. Through the staggered design, the arrangement density of the thorns 25 per unit length is increased, effectively improving the ionization effect of the cathode needle 2 in oil fume purification.

[0052] Furthermore, both sides of the needle portion 23 are provided with curling edges 232, and the distance between the two curling edges 232 on one needle plate 21 is greater than the distance between the two curling edges 232 on the other needle plate 21. By designing the curling edges 232, the structural strength of the needle plate 21 is enhanced. In a preferred embodiment, as Figure 10As shown, the spacing between the curling edges 232 of the two needle plates 21 is designed to be differentiated: when the spacing between the curling edges 232 on both sides of one needle plate 21 is greater than that of the other needle plate 21, the curling edges 232 of the two needle plates 21 are all facing the same side, and the curling edges 232 with a larger spacing can wrap the curling edges 232 with a smaller spacing to form a nested fitting structure. At this time, the outer curling edge 232 generates a positioning constraint on the inner curling edge 232, thereby realizing rapid alignment and assembly.

[0053] In alternative solutions, such as Figure 11 As shown, the curling edges 232 of the two needle plates 21 can face opposite directions. In this case, the needle plates 21 are designed with equal width, and the reverse curling edges 232 on both sides form a symmetrical support structure.

[0054] In a preferred embodiment, see Figure 1 、 12 The cathode frame 10 also includes two parallel cross beams 3 and a plurality of vertical rods 31 connecting the two cross beams 3. Every two frames 1 are symmetrically arranged on both sides of a vertical rod 31. Specifically, the frame 1 is composed of a top beam 11, a bottom beam 12 and two connecting beams 13 connecting the top beam 11 and the bottom beam 12. Preferably, the top beam 11, the bottom beam 12 and the connecting beam 13 are all made of square tubes to achieve a lightweight design while ensuring structural strength.

[0055] Two mounting seats 4 are provided on the vertical rods 31, each of which is provided with a plug-in post 41 that plugs into the ends of the top beam 11 and bottom beam 12, respectively. Specifically, the ends of the top beam 11 and bottom beam 12 are each provided with a connecting ear 14. After being inserted into the ends of the top beam 11 and bottom beam 12, the connecting ear 14 is connected to the mounting seat 4 via fasteners, thereby achieving a rigid connection between the frame 1 and the vertical rods 31. This plug-in installation improves the stability of the connection between the frame 1 and the vertical rods 31. At the same time, the fasteners form a detachable connection. When the frame 1 and the plurality of cathode needles 2 need to be completely removed, the connection between the mounting seat 4 and the frame 1 can be released.

[0056] In summary, the present invention comprises a cathode frame 10 composed of multiple symmetrically distributed frames 1. The cross-sections of the top beam 11 and the bottom beam 12 are both prismatic structures. The bottom beam 12 is provided with multiple first slots 121 along its length. The cathode needle 2 is formed by riveting two needle plates 21. The needle plates 21 are divided from top to bottom into a bent portion 22, a needle portion 23, and a plug-in portion 24. During installation, the plug-in portion 24 is inserted into the first slot 121 of the bottom beam 12. The bent portion 22 is bent and abuts against the side wall of the top beam 11 and is fixed by riveting. At the same time, the second bent piece 241 at the lower end of the needle portion 23 and the fourth bent piece 271 at the plug-in portion 27 respectively form a two-way abutment with the side walls of the bottom beam 12 and the top beam 11. The slot limiter achieves multi-point limit, ensuring the cathode needle 2's ability to resist vibration and displacement. During maintenance, the cathode needle 2 can be pulled upward by simply cutting the rivet, allowing for independent replacement within the confined space of the equipment. In addition, the needle part 23 is processed with staggered hollow holes 231 through a laser cutting process, and is bent outward to form dense thorns 25, which reduces the weight while improving the ionization efficiency; the curling edges 232 on both sides of the needle plate 21 adopt a differentiated spacing design, which not only enhances the structural rigidity but also simplifies assembly positioning.

[0057] The present invention also provides an industrial fume purification device, see Figure 13 、 14 , including a casing 5, an anode plate 6 and the detachable cathode frame, a plurality of anode plates 6 are arranged in the casing 5, and the cathode frame 10 is installed in the casing 5 through an insulator 7, and the plurality of anode plates 6 and the plurality of frames 1 are arranged at intervals. Specifically, the ends of the two parallel beams 3 are connected to the casing 5 through the insulator 7 to achieve the insulated installation of the cathode frame 10, and the side edges of the anode plates 6 are fixedly connected to the inner wall of the casing 5 to achieve the grounding connection of the anode plates 6. The cathode frame 10 and the anode plates 6 are staggered to form an ionization channel. When the equipment is running, the cathode frame 10 is connected to a high-voltage power supply, and the thorns 25 on its surface generate corona discharge, so that the oil smoke particles flowing through the ionization channel are charged and adsorbed by the anode plates 6, thereby achieving efficient purification. When any cathode needle 2 is damaged, it is only necessary to remove the rivet of the bent part 22 of the top beam 11 and pull out the cathode needle 2 upward to complete the replacement. There is no need to disassemble the frame 1 or the anode plate 6. The operating space requirement is small, which effectively reduces the maintenance cost and is particularly suitable for equipment with limited space.

[0058] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A detachable cathode frame, characterized in that: include: A cathode frame (10) comprises a plurality of frames (1), each frame (1) comprising a top beam (11) and a bottom beam (12) both of which have diamond-shaped cross-sections, and the bottom beam (12) is provided with a plurality of first slots (121) spaced apart along a length direction; The cathode needle (2) comprises two symmetrically arranged needle plates (21), each needle plate (21) being provided with a bending portion (22), a needle portion (23) and a plug-in portion (24) in sequence from top to bottom; burrs (25) are provided at intervals along the length direction of the needle portion (23) on both sides; the plug-in portion (24) is correspondingly inserted into a first slot (121) of the bottom beam (12); the bending portion (22) is in contact with the side wall of the top beam (11) and fixed by riveting.

2. The detachable cathode frame according to claim 1, characterized in that: The width of the plug-in portion (24) gradually decreases from top to bottom along the vertical direction; the bent portion (22) includes at least one first bent piece (221) that is in contact with the side wall of the top beam (11).

3. The detachable cathode frame according to claim 2, characterized in that: A second bending piece (241) is provided at the lower end of the needle portion (23), and the plug-in portion (24) is located inside the second bending piece (241); the plug-in portion (24) and the second bending piece (241) are located on the same vertical plane with a gap in the original unbent state; after bending, the second bending piece (241) abuts against the side wall of the bottom beam (12).

4. The detachable cathode frame according to claim 1, wherein: A transition portion (26) that can be inserted into a first slot (121) is provided between the needle portion (23) and the plug-in portion (24); second slots (111) that pass through the top and bottom of the top beam (11) are provided at intervals along the length direction; an insertion portion (27) that is plugged into the second slot (111) is provided between the needle portion (23) and the bending portion (22); and the bending portion (22) includes a third bending piece (222) that is in contact with the upper side wall of the top beam (11).

5. The detachable cathode frame according to claim 4, characterized in that: A fourth bending piece (271) is provided in the insertion portion (27), and the fourth bending piece (271) abuts against the lower side wall of the top beam (11).

6. The detachable cathode frame according to claim 1, characterized in that: A bending groove (223) is provided on one side of the bending portion (22) close to the needle portion (23).

7. The detachable cathode frame according to claim 2 or 4, characterized in that: The needle portion (23) is provided with two groups of holes, each group of holes comprising a plurality of hollow holes (231) spaced apart along the length direction of the needle plate (21), each thorn (25) extending outward from the corresponding hollow hole (231), the two rows of hole groups being arranged facing each other, and the hollow holes (231) in the hole groups being staggered with each other.

8. The detachable cathode frame according to claim 7, characterized in that: Both sides of the needle portion (23) are provided with curling edges (232), and the distance between the two curling edges (232) on one needle plate (21) is greater than the distance between the two curling edges (232) on the other needle plate (21).

9. The detachable cathode frame according to claim 1, characterized in that: The cathode frame (10) further comprises two parallel cross beams (3) and a plurality of vertical rods (31) connecting the two cross beams (3), and each two frames (1) are symmetrically arranged on both sides of a vertical rod (31); two mounting seats (4) are provided on the vertical rod (31), and each mounting seat (4) is provided with a plug post (41) respectively plugged into the end of the top beam (11) and the end of the bottom beam (12).

10. An industrial fume purification device, characterized in that: The invention comprises a casing (5), an anode plate (6) and a detachable cathode frame (10) as described in any one of claims 1, 2, 4, 6 and 9, wherein a plurality of anode plates (6) are arranged in the casing (5), the cathode frame (10) is installed in the casing (5) through an insulator (7), and the plurality of anode plates (6) and the plurality of frames (1) are arranged at intervals.

Images