Cathode needle and cylindrical electric field

Abstract

The utility model discloses a cathode needle and a cylindrical electric field, which comprise a hollow tube, a plurality of rows of hole groups are arranged on the side wall of the hollow tube, each row of hole group comprises a plurality of hollowed-out holes arranged along the length direction of the hollow tube, each hollowed-out hole extends outwards to form a spine, and the distance from the tail end of each spine to the axis of the hollow tube is consistent. According to the cathode needle and the cylindrical electric field provided by the utility model, the weight of the cathode needle can be effectively reduced, the requirement of lightweight design of the cathode needle is met, and meanwhile, the mounting stability of the cathode needle can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic oil fume purification equipment, in particular to a cathode needle and a cylindrical electric field. Background Art

[0002] In electrostatic oil fume purification equipment, the cathode needle is usually connected to a high-voltage power supply, and an uneven electric field is formed between the cathode needle and the anode cylinder. When the air to be purified passes between the cathode needle and the anode cylinder, the particles in the air are charged under the action of the electric field and adsorbed on the anode cylinder, thereby purifying the air.

[0003] The existing cathode needle is made by welding multiple strips of material with spikes on the side wall of a long tube. The multiple spikes are processed on the long tube by adding material, which makes the cathode needle heavier. In the cylindrical electric field of the electrostatic oil fume purification equipment, one end of the cathode needle is fixed on the cathode frame to complete the installation of the cathode needle. However, when multiple heavy cathode needles are fixed on a cathode frame, the load-bearing capacity of the cathode frame becomes larger and the installation of the cathode needle is unstable. Therefore, the lightweight design of the cathode needle can ensure its installation stability and reduce the load on the cathode frame.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a cathode needle and a cylindrical electric field, aiming to solve the technical problem of the cathode needle being heavy in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A cathode needle comprises a hollow tube, the side wall of which is provided with a plurality of rows of hole groups, each row of hole groups comprising a plurality of hollow holes arranged along the length direction of the hollow tube, each hollow hole having a spike extending outward, and the end of each spike being at the same distance from the axis of the hollow tube.

[0008] Furthermore, the cross section of the hollow tube is a polygonal structure or a circular structure.

[0009] Furthermore, the hollow tube includes more than two connecting pieces, all of which are spliced ​​together in sequence to form the hollow tube, and ribs are provided between two adjacent connecting pieces.

[0010] Furthermore, every two rows of hole groups are arranged facing each other, and the hollow holes in the hole groups are staggered with each other.

[0011] Furthermore, one end of the spike has a pointed corner, and the other end thereof is provided with a bent portion connected to the hollow hole.

[0012] Furthermore, the spikes correspond to the shape of the hollow holes.

[0013] Furthermore, the hollow tube is made of stainless steel.

[0014] A cylindrical electric field is characterized by comprising an anode rack, an anode tube, a cathode rack and cathode needles, wherein a plurality of anode tubes are mounted on the anode rack, the cathode rack is insulated and fixed on the anode rack, a plurality of cathode needles are fixed on the cathode rack, and one cathode needle is inserted into one anode tube.

[0015] Beneficial effects: The utility model provides a cathode needle and a cylindrical electric field, which adopt a hollow tube; and through laser cutting and bending, multiple spikes can be processed on the side wall of the hollow tube, which reduces the weight of the cathode needle, meets the requirements of the lightweight design of the cathode needle, and at the same time ensures the stability of the cathode needle installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a cathode needle provided by the present invention when the cross section of the hollow tube is a quadrilateral;

[0017] Figure 2 for Figure 1 A magnified view of point A;

[0018] Figure 3 This is a front view of the hollow tube in the cathode needle provided by the present invention when the cross section is a quadrilateral;

[0019] Figure 4 The side view of the hollow tube in the cathode needle provided by the utility model when the cross section is a quadrilateral Figure 1 ;

[0020] Figure 5 The side view of the hollow tube in the cathode needle provided by the utility model when the cross section is a quadrilateral Figure 2 ;

[0021] Figure 6 This is a structural diagram of a cathode needle provided by the present invention when the cross section of the hollow tube is hexagonal;

[0022] Figure 7 The side view of the hollow tube in the cathode needle provided by the utility model when the cross section is hexagonal Figure 1 ;

[0023] Figure 8 The side view of the hollow tube in the cathode needle provided by the utility model when the cross section is a quadrilateral Figure 2 ;

[0024] Figure 9 The side view of the hollow tube in the cathode needle provided by the utility model when the cross section is a quadrilateral Figure 3 ;

[0025] Figure 10 This is a structural diagram of a hollow tube in a cathode needle provided by the present invention when the cross section is circular;

[0026] Figure 11 The side view of the hollow tube in the cathode needle provided by the utility model when the cross section is circular Figure 1 ;

[0027] Figure 12 The side view of the hollow tube in the cathode needle provided by the utility model when the cross section is circular Figure 2 ;

[0028] Figure 13 This is a structural schematic diagram of the cylindrical electric field provided by the utility model.

[0029] Reference numerals: cathode needle 10 , hollow tube 1 , connecting piece 11 , rib 12 , hole group 2 , hollow hole 3 , spike 4 , sharp corner 41 , bend 42 , anode frame 5 , anode cylinder 6 , cathode frame 7 . DETAILED DESCRIPTION

[0030] The present invention provides a cathode needle and a cylindrical electric field. To make the purpose, technical solution, 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 examples described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention.

[0031] See also Figures 1 to 12 As shown, the utility model provides a cathode needle 10, including a hollow tube 1, and the side wall of the hollow tube 1 is provided with a plurality of rows of hole groups 2, each row of hole groups 2 includes a plurality of hollow holes 3 arranged along the length direction of the hollow tube 1, and each hollow hole 3 has a spike 4 extending outward, and the distance from the end of each spike 4 to the axial centerline of the hollow tube 1 is consistent.

[0032] The use of a hollow tube 1 can effectively reduce the weight of the cathode needle 10, and the non-overlapping portion of the hollow hole 3 and the corresponding spike 4 is removed from the side wall of the hollow tube 1 by laser cutting, and the spike 4 is then bent outward at an angle, so that the distance from the end of each spike 4 to the axial centerline of the hollow tube 1 is consistent, that is, on the vertical projection plane, the end of each spike 4 is on the same circle. After the spikes 4 are bent, multiple hollow holes 3 are formed on the side of the hollow tube 1. Compared with the existing technology, using the side wall of the hollow tube 1 to process multiple spikes 4 can further reduce the weight of the hollow tube 1 and achieve the purpose of saving materials.

[0033] In a preferred embodiment, the cross section of the hollow tube 1 is a polygonal structure or a circular structure. Figure 4 、 7As shown, when the cross section of the hollow tube 1 is a polygonal structure, in the vertical projection plane, the edges of the hollow tube 1 are located on the same circle, and the spikes 4 are bent outward along the corresponding edges, so that the distance between the end of each spike 4 and the axis of the hollow tube 1 is consistent. Figure 11 As shown, when the cross section of the hollow tube 1 is a circular structure, on the vertical projection plane, each row of spikes 4 is arranged on the hollow tube 1 in a circular array.

[0034] Preferably, the number of the hole groups 2 on the hollow tube 1 is 4 or 6 rows, so that the circumferential array on the hollow tube 1 has 4 or 6 rows of spikes.

[0035] In a preferred embodiment, see Figure 5 、 8 , 9, 12, the hollow tube 1 adopts a splicing structure, the hollow tube 1 includes two or more connecting pieces 11, all the connecting pieces 11 are sequentially spliced ​​into the hollow tube 1, and ribs 12 are provided between two adjacent connecting pieces 11. Preferably, as Figure 5 、 9 The connecting piece 11 is made of two pieces. The connecting piece 11 is first processed by laser cutting, then bent, and both sides of the connecting piece 11 are bent into ribs 12. The two connecting pieces 11 are then spliced ​​together to form a hollow tube 1. The ribs 12 on one connecting piece 11 are fixedly connected to the ribs 12 on the other connecting piece 11 by welding. This ensures that the inner sidewall of the hollow tube 1 has ribs 12 extending along its length, effectively improving the structural strength of the cathode needle 10. Finally, each spike 4 is bent into shape using a dedicated bending die to complete the processing of the cathode needle 10.

[0036] Optional, see Figure 4 、 7 11. The hollow tube 1 is a non-spliced ​​structure, that is, the hollow tube 1 is a seamless steel tube. The hollow tube 1 is processed by laser cutting, and then each spike 4 is bent into shape by a special bending mold.

[0037] In a preferred embodiment, see Figure 3 To ensure symmetry of the cathode needles 10, two rows of hole groups 2 are arranged facing each other, and the hollow holes 3 within the hole groups 2 are staggered. That is, two rows of spikes 4 are machined on one sidewall of the hollow tube 1, and the spikes 4 extend toward the adjacent sidewall. For example, if the hollow tube 1 is a regular quadrilateral, the corresponding two sidewalls of the hollow tube 1 are used to machine the spikes 4, which are then bent toward the adjacent, complete sidewall. For example, if the hollow tube 1 is a regular hexagon, the three spaced-apart sidewalls of the hollow tube 1 are used to machine the spikes 4, which are then bent toward the adjacent, complete sidewall.

[0038] In the above, the hollow holes 3 in the two rows of hole groups 2 arranged opposite to each other are staggered, which can produce more spikes 4 and make the spikes 4 arranged compactly. In addition, the staggered spikes 4 can increase the discharge range to improve the purification effect of the equipment.

[0039] In a preferred embodiment, see Figure 2 One end of the spike 4 has a sharp corner portion 41 to achieve the discharge effect; the other end is provided with a bending portion 42 connected to the hollow hole 3, and the width of the bending portion 42 is smaller than the width of the spike 4, which is conducive to bending the spike 4 to a certain angle.

[0040] Furthermore, the spike 4 corresponds to the shape of the hollow hole 3, as shown in FIG. Figure 3 As shown, the spikes 4 are preferably triangular in structure, and correspondingly, the hollow holes 3 are triangular in structure, which can improve the space utilization of the side wall of the hollow tube 1, and thus more spikes 4 can be processed under the condition of the same length of the hollow tube 1.

[0041] In a preferred embodiment, the hollow tube 1 is made of stainless steel, which is rust-proof and corrosion-resistant, so that the cathode needle 10 can adapt to a wider range of working conditions.

[0042] See Figure 13 The present invention also provides a cylindrical electric field, comprising an anode rack 5, an anode cylinder 6, a cathode rack 7, and the aforementioned cathode needles. Several anode cylinders 6 are mounted on the anode rack 5, and the cathode rack 7 is insulated and fixed to the anode rack 5. Several cathode needles 10 are fixed to the cathode rack 7, with one cathode needle 10 inserted into each anode cylinder 6. By machining multiple spikes 4 on the sidewall of the hollow tube 1, the weight of the cathode needles 10 can be effectively reduced, meeting the requirements of a lightweight design. This allows multiple cathode needles 10 to be fixed to a single cathode rack 7, and the installation stability of the cathode needles 10 is high.

[0043] During the fume purification process, the hollow tube 1 is positioned at the axis of the anode cylinder 6. The spikes 4 generate a corona discharge by applying high-voltage direct current, ionizing the gas to form a large number of positive and negative ions. These negatively charged ions bind to dust particles, causing them to become negatively charged. The charged dust particles are attracted to the anode cylinder 6 by the electric field, thus purifying the fume.

[0044] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and utility model 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 cathode needle, characterized in that: It includes a hollow tube, and the side wall of the hollow tube is provided with several rows of hole groups. Each row of hole groups includes several hollow holes arranged along the length direction of the hollow tube. There is a spike extending outward from each hollow hole, and the distance from the end of each spike to the axis line of the hollow tube is consistent.

2. The cathode needle according to claim 1, wherein The cross section of the hollow tube is a polygonal structure or a circular structure.

3. The cathode needle according to claim 1, wherein The hollow tube comprises more than two connecting pieces, all of which are sequentially spliced ​​together to form the hollow tube, and ribs are provided between two adjacent connecting pieces.

4. The cathode needle according to claim 1, wherein Every two rows of hole groups are arranged facing each other, and the hollow holes in the hole groups are staggered with each other.

5. The cathode needle according to claim 1, wherein One end of the spike is provided with a pointed corner portion, and the other end is provided with a bending portion connected to the hollow hole.

6. The cathode needle according to claim 5, characterized in that The spikes correspond to the shape of the hollow holes.

7. The cathode needle according to claim 1, wherein The hollow tube is made of stainless steel.

8. A cylindrical electric field, characterized in that The invention comprises an anode rack, an anode tube, a cathode rack and the cathode needle according to any one of claims 1 to 7, wherein a plurality of anode tubes are mounted on the anode rack, the cathode rack is insulated and fixed on the anode rack, a plurality of cathode needles are fixed on the cathode rack, and one cathode needle is inserted into one anode tube.

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