CN112291915A

CN112291915A - Novel broad width plasma surface treatment device

Info

Publication number: CN112291915A
Application number: CN202011361832.8A
Authority: CN
Inventors: 刘善石
Original assignee: Kunshan Suncola Mechanical And Electronic Technology Co ltd
Current assignee: Kunshan Suncola Mechanical And Electronic Technology Co ltd
Priority date: 2020-04-14
Filing date: 2020-11-28
Publication date: 2021-01-29
Also published as: CN111669886A; CN111295033A

Abstract

The invention discloses a novel wide-width plasma surface treatment device, which comprises a closed box body and a workbench, wherein an electrode is arranged in the middle of an ionization region, the electrode is arranged in an electrode cavity in the middle of the box body, two ends of the electrode are connected with an external high-voltage power supply device, the electrode is a transversely-placed cylindrical long electrode, a ceramic insulating part is coated outside the electrode, a gap for working gas to pass through is formed between the electrode cavity and the electrode, an air inlet channel is arranged at the upper end of the electrode cavity and connected with an air mixing cavity of the air inlet region, a plasma channel is arranged at the lower end of the electrode cavity and connected with an air outlet region, and a plasma outlet connected with the plasma channel is arranged at an opening of the air outlet region. The arrangement of the strip electrode increases the processing width of the electrode, so that the problem of low production efficiency of a single nozzle is solved, meanwhile, the technical medium discharge is adopted, the structure is very simple, and in addition, through holes are fully distributed around the electrode, so that the high heat generated during electrode discharge is reduced by ventilation.

Description

Novel broad width plasma surface treatment device

Technical Field

The invention relates to the technical field of plasma treatment, in particular to a novel wide-width plasma surface treatment device.

Background

The plasma surface treatment technology can increase surface tension, finely clean, remove static electricity, activate surface and other functions, is widely applied to the surface modification treatment of glass, metal, cables, rubber, plastics, paste boxes and rubber, and the existing plasma surface treatment devices are generally divided into 2 types: one is a wide plasma surface treatment device which is composed of a single spray head and a plurality of electrode spray heads, the plasma electrodes are distributed too much, the structure is complex, and the operation of the whole plasma surface treatment device can be influenced by the problem of a single electrode.

Disclosure of Invention

In order to overcome the defects, the invention provides a novel wide-width plasma surface treatment device which is very simple in structure while ensuring that the treatment width is increased.

The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a novel broad width plasma surface treatment device, includes confined box and workstation, the box is from last to divide into air intake zone, ionization area and the district of giving vent to anger downwards in proper order, be equipped with the working gas inlet port on the air intake zone, set up the gas mixing chamber in the air intake zone, be equipped with the electrode in the middle of the ionization area, the electrode sets up in the electrode intracavity in the middle of the box, and outside high voltage power supply unit is connected to the one end of electrode, the electrode is a horizontal long electrode of placing, and a ceramic insulator of its outside cladding, be equipped with the clearance that supplies working gas to pass through between electrode chamber and the electrode, electrode chamber upper end is equipped with the gas mixing chamber that air inlet channel connects air intake zone, and electrode chamber lower extreme is equipped with plasma channel and connects air outlet zone, air outlet zone mouth is equipped with the plasma export of being connected.

As a further improvement of the invention, the electrode is formed by combining two long electrodes with semicircular cross sections, a spring is arranged between the two long electrodes, and two ends of the spring tightly support the two long electrodes, so that the long electrodes are tightly matched with the ceramic insulating part, and the electrodes can be ensured to be fully contacted with the ceramic.

As a further improvement of the invention, each long electrode is provided with a plurality of ventilation holes for cooling the electrode.

As a further improvement of the invention, the middle of the electrode is arranged in a hollow way, so that the cooling effect is further improved

As a further improvement of the invention, the lower parts of the box body and the workbench are provided with strip-shaped exhaust holes which are externally connected with an exhaust fan, so that the generated waste gas is directly exhausted, and the purposes of environmental protection, safety and no peculiar smell are achieved.

The invention has the beneficial effects that: the novel wide-width plasma surface treatment device has the following advantages: the arrangement of the strip electrode increases the processing width of the electrode, so that the problem of low production efficiency of a single nozzle is solved, meanwhile, the technical medium discharge is adopted, the structure is very simple, and in addition, through holes are fully distributed around the electrode, so that the high heat generated during electrode discharge is reduced by ventilation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of an electrode structure according to the present invention;

FIG. 3 is a side view of this FIG. 1;

the following are marked in the figure: 1-a box body; 2-a workbench; 3-a gas inlet zone; 4-an ionization region; 5-a gas outlet zone; 6-working gas inlet hole; 7-a gas mixing cavity; 8-an electrode; 9-an electrode cavity; 10-a ceramic insulator; 11-an intake passage; 12-a plasma outlet; 13-a vent hole; 14-plasma discharge region.

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

Fig. 1 shows an embodiment of the novel broad width plasma surface treatment apparatus of the present invention, comprising a closed box 1 and a working table 2, the box body 1 is sequentially divided into an air inlet area 3, an ionization area 4 and an air outlet area 5 from top to bottom, a working gas inlet hole 6 is arranged on the air inlet area 3, a gas mixing cavity 7 is arranged in the air inlet area 3, an electrode 8 is arranged in the middle of the ionization region 4, the electrode 8 is arranged in an electrode cavity 9 in the middle of the box body 1, one end of the electrode 8 is connected with an external high-voltage power supply device, the electrode 8 is a cylindrical long electrode which is transversely arranged, the ceramic insulator 10 is coated outside the electrode cavity 9, a gap for working gas to flow is arranged between the electrode cavity 9 and the electrode 8, the upper end of the electrode cavity 9 is provided with an air inlet channel 11 connected with an air mixing cavity 7 of an air inlet area, the lower end of the electrode cavity 9 is provided with a plasma channel connected with an air outlet area 5, and a plasma outlet 12 connected with the plasma channel is arranged at the opening of the air outlet area 5.

As shown in fig. 2, the electrode 8 is formed by combining two long electrodes with semicircular cross sections, a spring is arranged between the two long electrodes, and two ends of the spring tightly support the two long electrodes, so that the long electrodes are tightly matched with the ceramic insulating part 10, and the electrodes can be fully contacted with the ceramic.

And a plurality of vent holes 13 are arranged on each long electrode and used for cooling the electrodes.

The middle of the electrode 8 is arranged in a hollow mode, and the cooling effect is further improved.

The lower part of box 1 and the lower part of workstation 2 set up rectangular exhaust hole, and rectangular exhaust hole external air exhauster makes the waste gas direct discharge of production, accomplishes environmental protection, safety, free from extraneous odour.

The working principle of the embodiment is as follows: the electrode 8 obtains energy after being electrified with high voltage, and generates inelastic collision with gas molecules or atoms in the discharge gap and transfers almost all energy, so that the gas is excited to generate electrode avalanche, a large amount of space charges are generated, the space charges are gathered at an avalanche head to form an electric field and are superposed on an external electric field to act on electrons at the same time, partial high-energy electrons in the avalanche are further accelerated to escape towards the direction of an anode, a breakdown channel formed by the escaping electrons enables the electron charges to have a higher speed than the electron migration, and two electric field waves to and fro between the electrodes are formed, so that one conducting channel can pass through the discharge gap very quickly, a large amount of filament-shaped pulse microdischarges are formed as shown in figure 3, and the whole discharge gap is uniformly and stably filled; the ionized gas forms a wider plasma discharge area 14 through a plasma channel, and low-temperature plasma is sprayed out from a plasma outlet to activate the surface of the product.

Claims

1. A novel broad width plasma surface treatment device is characterized in that: comprises a closed box body (1) and a workbench (2), wherein the box body (1) is sequentially divided into an air inlet area (3), an ionization area (4) and an air outlet area (5) from top to bottom, a working gas inlet hole (6) is formed in the air inlet area (3), an air mixing cavity (7) is arranged in the air inlet area (3), an electrode (8) is arranged in the middle of the ionization area (4), the electrode (8) is arranged in an electrode cavity (9) in the middle of the box body (1), one end of the electrode (8) is connected with an external high-voltage power supply device, the electrode (8) is a transversely arranged long electrode, a ceramic insulating part (10) is coated outside the electrode (8), a gap for working gas to flow is formed between the electrode cavity (9) and the electrode (8), an air inlet channel (11) is arranged at the upper end of the electrode cavity (9) and connected with the air mixing cavity (7) in the air inlet area, a plasma channel is arranged at the lower end of the electrode, and a plasma outlet (12) connected with the plasma channel is arranged at the outlet of the gas outlet area (5).

2. The novel broad width plasma surface treatment device according to claim 1, wherein: the electrode (8) is formed by combining two long electrodes with semicircular cross sections, a spring is arranged between the two long electrodes, and two ends of the spring tightly support the two long electrodes, so that the long electrodes are tightly matched with the ceramic insulating part (10), and the electrodes can be fully contacted with ceramic.

3. The novel broad width plasma surface treatment device according to claim 2, wherein: and a plurality of vent holes (13) are arranged on each long electrode and used for cooling the electrodes.

4. The novel broad width plasma surface treatment device according to claim 1, wherein: the middle of the electrode (8) is arranged in a hollow mode, and the cooling effect is further improved.

5. The novel broad width plasma surface treatment device according to claim 1, wherein: the lower part of box (1) and the lower part of workstation (2) set up rectangular exhaust hole, the external air exhauster of rectangular exhaust hole.