Plasma electrode convenient to install

Abstract

The utility model relates to the field of electrodes, in particular to a plasma electrode convenient to install, which comprises an anode fixing piece, a cathode fixing piece, a first electrode and a second electrode, the cathode main body is located below the tungsten head, a sealing ring a, a sealing ring b and a sealing ring c are sequentially arranged on the outer circumferential surface of the cathode main body from bottom to top, the sealing ring a abuts against the bottom of the gas chamber to achieve sealing, the sealing ring c abuts against the top of the cooling chamber to achieve sealing, and a plurality of heat dissipation rings are arranged between the sealing ring b and the sealing ring c; and the middle sealing mechanism is arranged on the sealing ring b, and the middle sealing mechanism abuts against the top of the air chamber for sealing. During installation, the sealing ring a abuts against the bottom of the air chamber to achieve bottom sealing, the annular sealing ring a abuts against the top of the air chamber or the bottom of the cooling chamber to achieve middle sealing, and finally a top cover of the cooling chamber is positioned and covered on the sealing ring c to complete top sealing. And the air chamber and the cooling chamber are mounted in a sealed manner simply and conveniently.

Description

Technical Field

[0001] The utility model relates to the field of electrodes, in particular to a plasma electrode which is convenient to install. Background Art

[0002] The plasma electrode used for tail gas treatment is a very critical part of low-temperature plasma technology. Plasma is a state of matter composed of ionized gas, which is generated by ionizing gas under the action of an electromagnetic field. In tail gas treatment, the main function of the plasma electrode is to generate plasma through an ionization process, and use the highly active particles in the plasma to decompose and oxidize harmful substances in the tail gas, thereby achieving the effect of purifying the tail gas. The plasma electrode includes a cathode and an anode. The cathode is used to generate electrons, which is accompanied by high temperatures and requires heat dissipation. In addition, in order to protect the cathode tungsten ring, an inert gas needs to be introduced, requiring two independent heat dissipation chambers and gas chambers, which are more troublesome to install. Utility Model Content

[0003] The utility model aims to solve the problem that the cathode of a plasma electrode in the background technology is troublesome to install, and to provide a plasma electrode which is convenient to install.

[0004] The technical solution of the utility model is a plasma electrode that is easy to install, comprising:

[0005] An anode fixing part, a tungsten head is arranged at the bottom of the anode fixing part;

[0006] The cathode body is located below the tungsten head, and there is a gap between the top of the cathode body and the tungsten head. A sealing ring a, a sealing ring b and a sealing ring c are arranged on the outer circumference of the cathode body from bottom to top in sequence, and the diameters of the sealing rings a, b and c gradually increase. The space between the sealing ring a and the sealing ring b and located outside the cathode body is an air chamber, and the space between the sealing ring b and the sealing ring c and located outside the cathode body is a cooling chamber. The sealing ring a is pressed against the bottom of the air chamber to achieve sealing, and the sealing ring c is pressed against the top of the cooling chamber to achieve sealing, and a plurality of heat dissipation rings are arranged between the sealing ring b and the sealing ring c;

[0007] And a middle sealing mechanism is arranged on the sealing ring b, and the middle sealing mechanism abuts against the top of the air chamber for sealing.

[0008] Preferably, a cavity is arranged in the cathode body, a tungsten ring is arranged in the cavity, a through hole is arranged at the top of the cavity, and the through hole forms an opening on the upper surface of the cathode body.

[0009] Preferably, a nitrogen inlet pipe is provided on the cathode body, the nitrogen inlet pipe is located between the sealing ring a and the sealing ring b, and the nitrogen inlet pipe is located in the gas chamber.

[0010] Preferably, an annular sealing groove a is provided at the bottom of the sealing ring a, and a sealing ring is provided on the inner wall of the bottom of the air chamber, and the sealing ring abuts against the inner wall of the annular sealing groove a.

[0011] Preferably, an annular sealing groove c is provided on the upper surface of the sealing ring c, a plurality of positioning holes are vertically provided on the sealing ring c, a sealing ring is provided on the inner wall at the top of the cooling chamber, and the sealing ring is against the annular sealing groove c.

[0012] Preferably, a conical surface is provided on the outer circumference of the sealing ring b, which is larger at the top and smaller at the bottom. An annular sealing groove b is provided on the conical surface, and the sealing ring b is arranged on the cathode body for vertical movement; the middle sealing mechanism includes an annular sealing ring a arranged on the groove wall of the annular sealing groove b, an annular sealing ring b arranged on the cathode body and resting against the bottom of the sealing ring b, a support plate arranged on the sealing ring b, and a bolt horizontally arranged on the support plate; a limiting rod is provided on the end of the bolt, and an annular limiting groove is provided on the outer circumference of one of the heat dissipation rings, and the limiting rod is inserted into the annular limiting groove.

[0013] Preferably, the wall of the via hole opened at the top of the air chamber is conical and matches the conical surface. When the sealing ring b moves down to the lowest point, the bottom of the sealing ring b abuts against the annular sealing ring b, and the annular sealing ring a abuts against the conical surface of the air chamber via hole.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects: the sealing ring a is against the bottom of the air chamber to achieve bottom sealing, the annular sealing ring a is against the top of the air chamber, or the bottom of the cooling chamber, to achieve middle sealing, and finally the top cover of the cooling chamber is positioned and covered on the sealing ring c to complete the top sealing. The sealing installation of the air chamber and the cooling chamber is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of a partial structure cutaway;

[0017] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0018] Figure 4 This is a schematic diagram after installation.

[0019] Figure numerals: 1, anode fixing piece; 2, tungsten head; 3, cathode body; 4, cavity; 5, tungsten ring; 6, sealing ring a; 7, sealing ring b; 8, sealing ring c; 9, annular sealing groove a; 10, annular sealing groove b; 11, annular sealing groove c; 12, positioning hole; 13, annular sealing ring a; 14, conical surface; 15, support plate; 16, bolt; 17, annular limiting groove; 18, limiting rod; 19, annular sealing ring b; 20, nitrogen inlet pipe; 21, cooling and lowering chamber; 22, air chamber; 23, heat dissipation ring. DETAILED DESCRIPTION

[0020] Embodiment 1

[0021] The utility model provides a plasma electrode that is easy to install, comprising:

[0022] like Figure 1 As shown, an anode fixing part 1, a tungsten head 2 is arranged at the bottom of the anode fixing part 1, the anode fixing part 1 is cylindrical and a thread is arranged on the outer peripheral surface, and the anode fixing part 1 is fixed by other tooling parts;

[0023] like Figure 2 and Figure 4 As shown, the cathode body 3 is located below the tungsten head 2, and there is a distance between the top of the cathode body 3 and the tungsten head 2, that is, the two are not in contact, a cavity 4 is arranged in the cathode body 3, a tungsten ring 5 is arranged in the cavity 4, and a through hole is arranged on the top of the cavity 4, and the through hole forms an opening on the upper surface of the cathode body 3, thereby forming an ionization channel between the tungsten ring 5 and the tungsten head 2. In order to facilitate the installation of the tungsten ring 5, a plurality of threaded holes are radially arranged on the cathode body 3, and the tungsten ring 5 is locked by passing a plurality of bolts through the threaded holes. A sealing ring a6, a sealing ring b7 and a sealing ring c8 are arranged on the outer circumference of the cathode body 3 from bottom to top in sequence, and the diameters of the sealing rings a6, b7 and c8 gradually increase, and the diameters between the sealing rings a6 and b7 are 4 mm. The space outside the cathode body 3 is an air chamber 22, the space between the sealing ring b7 and the sealing ring c8 and outside the cathode body 3 is a cooling chamber 21, the sealing ring a6 abuts against the bottom of the air chamber 22 to achieve sealing, the sealing ring c8 abuts against the top of the cooling chamber 21 to seal, and a plurality of heat dissipation rings 23 are arranged between the sealing ring b7 and the sealing ring c8; a nitrogen inlet pipe 20 is arranged on the cathode body 3, the nitrogen inlet pipe 20 is located between the sealing ring a6 and the sealing ring b7, and the nitrogen inlet pipe 20 is located in the air chamber 22, and the inner wall of the cathode body 3 and the tungsten ring 5 can be protected by introducing nitrogen into the cavity 4, and at the same time, the nitrogen overflows from the through hole, can take away part of the heat, and can improve the stability of the tail gas treatment;

[0024] like Figure 3 As shown, the middle sealing mechanism is arranged on the sealing ring b7, and the middle sealing mechanism is pressed against the top of the air chamber 22 for sealing.

[0025] Embodiment 2

[0026] The utility model provides a plasma electrode that is easy to install. Compared with the first embodiment, the present embodiment introduces the sealing structure of the gas chamber 22 and the cooling chamber 21 in detail.

[0027] like Figure 2 As shown, an annular sealing groove a9 is set at the bottom of the sealing ring a6, and a sealing ring is set on the inner wall of the bottom of the air chamber 22. The sealing ring is against the inner wall of the annular sealing groove a9. The cathode body 3 is directly lowered so that its bottom passes through the avoidance hole set on the air chamber 22 to complete the sealing of the bottom of the air chamber 22.

[0028] like Figure 1 and Figure 4 As shown, an annular sealing groove c11 is provided on the upper surface of the sealing ring c8, a plurality of positioning holes 12 are vertically provided on the sealing ring c8, a sealing ring is provided on the top inner wall of the cooling and decompression chamber 21, and the sealing ring is against the annular sealing groove c11. In an optional embodiment, two annular sealing grooves c11 are concentrically provided, six positioning holes 12 are provided, a plurality of positioning rods are vertically provided on the top inner wall of the cooling and decompression chamber 21, and the positioning rods pass through the positioning holes 12. During installation, the top plate of the cooling and decompression chamber 21 is installed last and is directly positioned and pressed on the sealing ring c8.

[0029] like Figure 3 As shown, a conical surface 14 is provided on the outer circumference of the sealing ring b7, the conical surface 14 is larger at the top and smaller at the bottom, an annular sealing groove b10 is provided on the conical surface 14, and the sealing ring b7 is arranged on the cathode body 3 for vertical movement. Specifically, mutually matching threads are provided on the inner circumferential wall of the sealing ring b7 and the outer circumferential wall of the cathode body 3; the middle sealing mechanism includes an annular sealing ring a13 provided on the groove wall of the annular sealing groove b10, an annular sealing ring b19 provided on the cathode body 3 and against the bottom of the sealing ring b7, a support plate 15 provided on the sealing ring b7, and a bolt 16 horizontally provided on the support plate 15; a limiting rod 18 is provided at the end of the bolt 16, an annular limiting groove 17 is provided on the outer circumferential surface of one of the heat dissipation rings 23, and the limiting rod 18 is inserted into the annular limiting groove 17 in cooperation, and the limiting rod 18 can also be provided integrally with the bolt 16, that is, there is a section of a bare rod section at the end of the bolt 16. In an optional embodiment, two support plates 15 and two bolts 16 are provided, and the two support plates 15 are symmetrical about the heat dissipation ring 23. The wall of the through hole opened at the top of the air chamber 22 is conical and matches the conical surface 14. When the sealing ring b7 moves down to the lowest point, the bottom of the sealing ring b7 abuts against the annular sealing ring b19, and the annular sealing ring a13 abuts against the conical surface of the through hole of the air chamber 22.

[0030] In summary, when the utility model is used, first rotate the bolt 16 to remove the limit rod 18 from the annular limit groove 17, and rotate the entire sealing ring b7 to the highest point position, which is the initial state of the plasma electrode. When installing, place the cathode body 3 and all the structures set on it below, so that the sealing ring a6 is against the bottom of the air chamber 22 to achieve bottom sealing, and then rotate the sealing ring b7 to make it rotate and move downward, and the annular sealing ring a13 is against the top of the air chamber 22, or the bottom of the cooling and cooling chamber 21, to achieve middle sealing, and finally position the top cover of the cooling and cooling chamber 21 on the sealing ring c8 to complete the top sealing. After the top cover is fixed, the cathode body 3 is installed, and then the anode fixing part 1 is fixed by the tooling, and it can be rotated and fixed, and the distance between the tungsten head 2 and the top of the cathode body 3 is adjusted to complete the final installation. In the utility model, the sealing installation of the air chamber 22 and the cooling and cooling chamber 21 is simple and convenient.

[0031] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A plasma electrode that is easy to install, characterized in that: include: An anode fixing member (1), a tungsten head (2) being arranged at the bottom of the anode fixing member (1); A cathode body (3) is located below the tungsten head (2), and there is a gap between the top of the cathode body (3) and the tungsten head (2). A sealing ring a (6), a sealing ring b (7) and a sealing ring c (8) are sequentially arranged on the outer peripheral surface of the cathode body (3) from bottom to top. The diameters of the sealing rings a (6), b (7) and c (8) gradually increase. The space between the sealing rings a (6) and b (7) and located outside the cathode body (3) is an air chamber (22), and the space between the sealing rings b (7) and c (8) and located outside the cathode body (3) is a cooling chamber (21). The sealing ring a (6) abuts against the bottom of the air chamber (22) to achieve sealing, and the sealing ring c (8) abuts against the top of the cooling chamber (21) to achieve sealing. A plurality of heat dissipation rings (23) are arranged between the sealing rings b (7) and c (8); And a middle sealing mechanism is arranged on the sealing ring b (7), and the middle sealing mechanism abuts against the top of the air chamber (22) to perform sealing.

2. The plasma electrode that is easy to install according to claim 1, characterized in that: A cavity (4) is arranged in the cathode body (3), a tungsten ring (5) is arranged in the cavity (4), a through hole is arranged at the top of the cavity (4), and the through hole forms an opening on the upper surface of the cathode body (3).

3. The plasma electrode that is easy to install according to claim 2, characterized in that: A nitrogen inlet pipe (20) is provided on the cathode body (3), the nitrogen inlet pipe (20) is located between the sealing ring a (6) and the sealing ring b (7), and the nitrogen inlet pipe (20) is located in the gas chamber (22).

4. The plasma electrode that is easy to install according to claim 1, characterized in that: An annular sealing groove a (9) is arranged at the bottom of the sealing ring a (6), and a sealing ring is arranged on the inner wall of the bottom of the air chamber (22), and the sealing ring abuts against the inner wall of the annular sealing groove a (9).

5. The plasma electrode that is easy to install according to claim 1, characterized in that: An annular sealing groove c (11) is provided on the upper surface of the sealing ring c (8), a plurality of positioning holes (12) are vertically provided on the sealing ring c (8), and a sealing ring is provided on the inner wall of the top of the cooling chamber (21), and the sealing ring is pressed against the annular sealing groove c (11).

6. The conveniently installed plasma electrode according to claim 1, characterized in that: A conical surface (14) is arranged on the outer circumference of the sealing ring b (7), the conical surface (14) is larger at the top and smaller at the bottom, an annular sealing groove b (10) is arranged on the conical surface (14), and the sealing ring b (7) is arranged on the cathode body (3) to move up and down; the middle sealing mechanism comprises an annular sealing ring a (13) arranged on the groove wall of the annular sealing groove b (10), an annular sealing ring b (19) arranged on the cathode body (3) and abutting against the bottom of the sealing ring b (7), a support plate (15) arranged on the sealing ring b (7), and a bolt (16) arranged horizontally on the support plate (15); a limiting rod (18) is arranged on the end of the bolt (16), an annular limiting groove (17) is arranged on the outer circumference of one of the heat dissipation rings (23), and the limiting rod (18) is inserted into the annular limiting groove (17) in a coordinated manner.

7. The conveniently installed plasma electrode according to claim 6, characterized in that: The wall of the through hole opened at the top of the air chamber (22) is conical and matches the conical surface (14). When the sealing ring b (7) moves down to the lowest point, the bottom of the sealing ring b (7) abuts against the annular sealing ring b (19), and the annular sealing ring a (13) abuts against the conical surface of the through hole of the air chamber (22).

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