Normal-temperature and normal-pressure plasma foaming porous material surface treatment device

Abstract

The utility model discloses a normal-temperature and normal-pressure plasma foaming porous material surface treatment device, which belongs to the technical field of material surface treatment and comprises wallboards arranged on two sides of the device and a cross beam fixed between the two wallboards. The device further comprises a plasma assembly. The plasma unit comprises a high-voltage roller electrode, a plurality of filamentous high-voltage electrodes and a power supply; the wall plate comprises a wall plate main body and an insulating plate, and the insulating plate is embedded in the wall plate main body; the high-voltage roller electrode comprises a metal roller and an insulating coating layer wrapping the metal roller. The two ends of the metal roller are rotationally connected to the insulating plates of the two wallboards correspondingly. The filamentous high-voltage electrodes are arranged above the high-voltage roller electrodes; the filamentous high-voltage electrode and the high-voltage roller electrode are connected with a power supply, and an area between the filamentous high-voltage electrode and the high-voltage roller electrode is a plasma discharge area. According to the utility model, uniform discharge of plasmas can be realized, and the filamentous high-voltage electrode can be maintained in a stable state during working.

Description

Technical Field

[0001] The utility model belongs to the technical field of material surface treatment, and relates to a plasma device, in particular to a surface treatment device for plasma foamed porous materials at normal temperature and pressure. Background Art

[0002] The plasma processing device is a device widely used in fields such as materials. It uses plasma, that is, a partially or completely ionized gas state, to process and treat various materials. Plasma contains charged particles such as electrons, positive ions, free radicals, etc., and these particles have high energy and can change the surface properties of materials. CN111447721A discloses a pulsed plasma electret device and method. Although this device can perform plasma treatment on non-woven materials, its roller electrode is grounded, which is used for electret treatment of non-woven materials rather than surface modification treatment, and it is not suitable for the treatment of foamed porous materials with larger thickness. In addition, the existing plasma processing devices also have the following problems: the gap adjustment structure between the filament electrode and the roller electrode is complex and difficult to operate; when the filament electrode works, it will expand due to heat, resulting in insufficient tightness and affecting the treatment effect. These problems are more significant when treating materials with larger thickness such as foamed porous materials. Summary of the Utility Model

[0003] The utility model provides a surface treatment device for plasma foamed porous materials at normal temperature and pressure to overcome the defects of the prior art.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A surface treatment device for plasma foamed porous materials at normal temperature and pressure includes wall panels arranged on both sides of the device and a cross beam fixed between the two wall panels; it also includes a plasma assembly; the plasma unit includes a high-voltage roller electrode, a plurality of filamentary high-voltage electrodes and a power supply; the wall panel includes a wall panel main body and an insulating board, and the insulating board is embedded in the wall panel main body; the high-voltage roller electrode includes a metal roller and an insulating coating wrapped outside the metal roller; both ends of the metal roller are rotatably connected to the insulating boards of the two wall panels; the filamentary high-voltage electrodes are all arranged above the high-voltage roller electrode; the filamentary high-voltage electrodes and the high-voltage roller electrode are both connected to the power supply, and the area between the filamentary high-voltage electrode and the high-voltage roller electrode is the plasma discharge area.

[0006] To optimize the above technical solution, the specific measures taken also include:

[0007] Further, it also includes a filamentary electrode mounting assembly; the filamentary electrode mounting assembly includes a mounting cross beam and two insulating mounting plates; the mounting cross beam is arranged below the cross beam and can move up and down relative to the cross beam; the two insulating mounting plates are respectively fixed on both sides of the mounting cross beam; both ends of the filamentary high-voltage electrode are respectively connected to the two insulating mounting plates.

[0008] Further, the end of the filamentary high-voltage electrode is connected to the insulating mounting plate through a spring.

[0009] Further, it also includes a number of filamentary electrode gap adjusting assemblies; the filamentary electrode gap adjusting assembly includes a lifting adjusting bolt and an adjusting nut; the lifting adjusting bolt passes through the cross beam, and the lower end is fixed to the mounting cross beam; the adjusting nut is threadedly connected to the lifting adjusting bolt and is located above the cross beam; by rotating the adjusting nut, the lifting adjusting bolt drives the mounting cross beam to move up and down accordingly.

[0010] Further, the filamentary electrode gap adjusting assembly also includes two balance adjusting bolts; the balance adjusting bolts pass through the cross beam and are threadedly connected to the cross beam, and the lower ends abut against the mounting cross beam; the two balance adjusting bolts are respectively arranged on the left and right sides of the lifting adjusting bolt; by rotating the balance adjusting bolts, the left and right heights of the mounting cross beam are adjusted accordingly.

[0011] Further, it also includes a number of insulating filamentary electrode anti-vibration members; the upper end of the filamentary electrode anti-vibration member is fixed on the mounting cross beam, and the filamentary high-voltage electrode abuts against the lower end of the filamentary electrode anti-vibration member.

[0012] Further, the lower end of the filamentary electrode anti-vibration member has a groove, and the filamentary high-voltage electrode abuts against the groove.

[0013] Further, the filamentary electrode anti-vibration member includes an anti-vibration column, an insulating rod and a limiting sleeve; the lower end of the anti-vibration column is divided into a number of clamping petals; the groove is arranged at the lower end of the insulating rod, and the upper end of the insulating rod is clamped in a number of clamping petals of the anti-vibration column; the material of the insulating rod is quartz or ceramic; the limiting sleeve is sleeved on the lower end of the anti-vibration column to fix the clamping state of its a number of clamping petals.

[0014] Further, the thickness of the insulating coating layer of the high-pressure roller electrode is 10 - 20 mm.

[0015] Further, the material of the filamentary high-voltage electrode is tungsten molybdenum alloy; the material of the wallboard main body is metal; the material of the insulating plate is a polymer material, preferably polytetrafluoroethylene; the material of the insulating coating layer is a polymer material such as quartz, ceramic, rubber or polytetrafluoroethylene, preferably high-silicon rubber; the material of the insulating mounting plate is a polymer material, preferably polytetrafluoroethylene; the material of the spring is stainless steel.

[0016] The beneficial effects of the present utility model are as follows: The present utility model provides a surface treatment device for a foamed porous material with normal temperature and pressure plasma. A high voltage is generated by a power supply and simultaneously acts on a high voltage roller electrode and a filamentous high voltage electrode. The high voltages applied to the two high voltage electrodes have opposite phases and equal amplitudes, thereby realizing discharge to generate plasma, and thus performing modification treatment on the surface of the foamed porous material. Further, a filament electrode anti-vibration member is provided on the installation cross beam of the filamentous high voltage electrode, which can keep the filamentous high voltage electrode stable during operation; the filamentous high voltage electrode is connected to the installation wall panel through a spring, so that it always remains in a taut state during operation, avoiding the problem of loosening due to thermal expansion; a filament electrode gap adjustment component is provided between the cross beam and the installation cross beam, which can not only adjust the height of the filamentous high voltage electrode, but also adjust the left-right balance of the installation cross beam, so that the distances between the filamentous high voltage electrodes and the high voltage roller electrode are the same. The present utility model can realize plasma discharge while ensuring that the filamentous high voltage electrode maintains a stable state during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of a surface treatment device for a foamed porous material with normal temperature and pressure plasma;

[0018] Figure 2 is a front view structural schematic diagram of the working state of a surface treatment device for a foamed porous material with normal temperature and pressure plasma;

[0019] Figure 3 is a sectional view of the high voltage roller electrode;

[0020] Figure 4 is a three-dimensional structural schematic diagram of the high voltage roller electrode and the wall panel;

[0021] Figure 5 is a side view structural schematic diagram of the installation structure of the filamentous high voltage electrode;

[0022] Figure 6 is a front view structural schematic diagram of the filament electrode gap adjustment component;

[0023] Figure 7 is a side view structural schematic diagram of the filament electrode anti-vibration member;

[0024] Figure 8 is an exploded three-dimensional structural schematic diagram of the filament electrode anti-vibration member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will describe the specific embodiments of the present utility model with reference to the accompanying drawings.

[0026] As Figure 1 and 2 shown, the present utility model provides a surface treatment device for a foamed porous material with normal temperature and pressure plasma, including a device main body and a plasma component

[0027] The main body of the device includes wall panels 11 arranged on both sides of the device and a cross beam 12 fixed between the two wall panels 11.

[0028] The plasma unit includes a high-voltage roller electrode 21, three filamentous high-voltage electrodes 22, and a power supply. The high-voltage roller electrode 21 and the filamentous high-voltage electrodes 22 are arranged between the two wall panels 11 and below the cross beam 12. The power supply is installed in the cabinet below the device to supply power to the high-voltage roller electrode 21 and the filamentous high-voltage electrodes 22.

[0029] As Figure 3 shown, the high-voltage roller electrode 21 includes a metal roller 211 and an insulating coating layer 212 wrapped around the metal roller 211. The material of the insulating coating layer 212 is a polymer material such as quartz, ceramic, rubber, or polytetrafluoroethylene, preferably high-silicon rubber, with a thickness of 10 - 20 mm. For example, the high-voltage roller electrode 21 can be in the form of a rubber-coated roller with a 10 - 20 mm thick high-silicon rubber coating on the metal roller shell. Compared with a 4 mm rubber-coated roller, the 10 - 20 mm rubber-coated roller can withstand a higher voltage, and the silicon rubber of the coating is also more uniform.

[0030] As Figure 4 shown, the wall panel 11 includes a wall panel main body 111 and an insulating board 112, and the insulating board 112 is embedded in the wall panel main body 111. The material of the wall panel main body 111 is metal, which has high strength and can provide stable support for the whole device. The material of the insulating board 112 is a polymer material, preferably polytetrafluoroethylene. The two ends of the metal roller 211 are respectively rotatably connected to the insulating boards 112 of the two wall panels 11.

[0031] The filamentous high-voltage electrodes 22 are all arranged above the high-voltage roller electrode 21. The material of the filamentous high-voltage electrodes 22 is tungsten molybdenum alloy.

[0032] Specifically, as Figure 5 and 6 shown, the device further includes a filamentous electrode mounting assembly for mounting the filamentous high-voltage electrodes 22. The filamentous electrode mounting assembly includes a mounting cross beam 31 and two insulating mounting plates 32. The mounting cross beam 31 is arranged below the cross beam 12 and can move up and down relative to the cross beam 12. The two insulating mounting plates 32 are respectively fixed on both sides of the mounting cross beam 31. The material of the insulating mounting plates 32 is a polymer material, preferably polytetrafluoroethylene. The two ends of the filamentous high-voltage electrodes 22 are respectively connected to the two insulating mounting plates 32.

[0033] In a preferred embodiment, as Figure 5As shown, the end of the filamentous high-voltage electrode 22 is connected to the insulating mounting plate 32 through a spring 33. Specifically, a fixing bolt 34 is fixed on the insulating mounting plate 32, and the filamentous high-voltage electrode 22 is connected to the fixing bolt 34 through the spring 33. The filamentous high-voltage electrode 22 will expand due to heat during operation, and the spring 33 can keep the filamentous high-voltage electrode 22 in a tensioned state all the time, avoiding the problem of loosening after thermal expansion caused by direct connection with the fixing bolt 34 and affecting the working state. The material of the spring 33 is stainless steel.

[0034] Both the filamentous high-voltage electrode 22 and the high-voltage roller electrode 21 are connected to the power supply, and the area between the filamentous high-voltage electrode 22 and the high-voltage roller electrode 21 is the plasma discharge area. The power supply generates high voltage through a high-voltage generator and acts on the filamentous high-voltage electrode 22 and the high-voltage roller electrode 21. The filamentous high-voltage electrode 22 and the high-voltage roller electrode 21 discharge to the plasma discharge area, causing air to generate plasma. The foamed porous material passes through between the filamentous high-voltage electrode 22 and the high-voltage roller electrode 21, and its surface is treated by plasma, as Figure 2 shown.

[0035] The device further includes two guide rollers 13. The guide rollers 13 are both arranged between the two wall panels 11. The two ends of the guide roller 13 are respectively rotatably connected to the wall panels 11. The two guide rollers 13 are respectively located on the left and right sides of the high-voltage roller electrode 21 and are used to cooperate with the high-voltage roller electrode 21 to conduct the foamed porous material.

[0036] In a preferred embodiment, the device further includes a plurality of filament electrode gap adjustment components for adjusting the gap between the filamentous high-voltage electrode 22 and the high-voltage roller electrode 21, including adjusting the overall height and left-right balance of the plurality of filamentous high-voltage electrodes 22. As Figure 6 shown, the filament electrode gap adjustment component includes a lifting adjustment bolt 41 and an adjustment nut 42. The lifting adjustment bolt 41 passes through the cross beam 12, and the lower end is fixed to the mounting cross beam 31. The adjustment nut 42 is threadedly connected to the lifting adjustment bolt 41 and is located above the cross beam 12. By rotating the adjustment nut 42, the lifting adjustment bolt 41 drives the mounting cross beam 31 to move up and down accordingly. A plurality of filament electrode gap adjustment components are evenly arranged on the cross beam 12.

[0037] The filament electrode gap adjustment component further includes two balance adjustment bolts 43. The balance adjustment bolts 43 pass through the cross beam 12 and are threadedly connected to the cross beam 12, and the lower ends abut against the mounting cross beam 31. The two balance adjustment bolts 43 are respectively arranged on the left and right sides of the lifting adjustment bolt 41. By rotating the balance adjustment bolts 43 to move them up and down, and when the left and right balance adjustment bolts 43 abut simultaneously, the left and right heights of the mounting cross beam 31 are adjusted to a balanced state to ensure that the distances between the filamentous high-voltage electrodes 22 and the high-voltage roller electrode 21 are consistent.

[0038] In a preferred embodiment, asFigure 7 and 8 As shown in 8 , the device further includes a plurality of insulated filament electrode anti-vibration members 5. The upper ends of the filament electrode anti-vibration members 5 are fixed on the mounting cross beam 31, and the filament high-voltage electrode 22 abuts against the lower ends of the filament electrode anti-vibration members 5 to prevent the filament high-voltage electrode 22 from vibrating during operation. The lower ends of the filament electrode anti-vibration members 5 have grooves 51, and the filament high-voltage electrode 22 abuts within the grooves 51, thereby better preventing the filament high-voltage electrode 22 from trembling and maintaining its stability.

[0039] Specifically, the filament electrode anti-vibration member 5 includes an anti-vibration column 52, an insulating rod 53, and a limit sleeve 54. The lower end of the anti-vibration column 52 is divided into a plurality of clamping petals. The groove 51 is provided at the lower end of the insulating rod 53, and the upper end of the insulating rod 53 is clamped among the plurality of clamping petals of the anti-vibration column 52. The material of the insulating rod 53 is quartz or ceramic. The limit sleeve 54 is sleeved on the lower end of the anti-vibration column 52 to fix the clamping state of its plurality of clamping petals, thereby realizing the fixation of the insulating rod 53. This structure facilitates the replacement of each part of the filament electrode anti-vibration member 5. The materials of the anti-vibration column 52 and the limit sleeve 54 are both polytetrafluoroethylene, and the material of the insulating rod 53 is quartz, all of which are insulating materials to prevent the filament high-voltage electrode 22 from discharging to the equipment.

[0040] The working principle of the surface treatment device for the ambient temperature and pressure plasma foamed porous material of the present utility model is as follows: A high voltage is generated by the power supply and acts on the high-voltage roller electrode 21 and the filament high-voltage electrode 22, causing the high-voltage roller electrode 21 and the filament high-voltage electrode 22 to discharge to the plasma discharge area between the two, thereby generating plasma in the air in this area. When the foamed porous material passes through the plasma discharge area under the action of the guide roller 13, the surface of the foamed porous material is treated and modified by the plasma. Among them, the filament high-voltage electrode 22 abuts within the groove 51 at the lower end of the filament electrode anti-vibration member 5, keeping it stable during the treatment process. The spring 33 between the filament high-voltage electrode 22 and the mounting wall panel 11 can keep the filament high-voltage electrode 22 in a taut state during the treatment process, avoiding the problem of becoming loose due to thermal expansion. In addition, the height of the filament high-voltage electrode 22 is adjusted by rotating the adjusting nut 42, thereby adjusting the gap between the filament high-voltage electrode 22 and the high-voltage roller electrode 21 to meet the actual treatment requirements. At the same time, by rotating the left and right balance adjustment bolts 43 to make them abut against the mounting cross beam 31, the left and right balance of the mounting cross beam 31 is adjusted to ensure that the distances between each filament high-voltage electrode 22 and the high-voltage roller electrode 21 are the same.

[0041] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "rear", etc. cited in the present utility model are only for the convenience of clear narration and are not used to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope of implementation of the present utility model.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A surface treatment device for porous materials by plasma foaming at room temperature and pressure, comprising wall panels arranged on both sides of the device and a beam fixed between the two wall panels, characterized in that: Also included are plasma components; The plasma unit includes a high-voltage roller electrode, a plurality of filamentary high-voltage electrodes and a power supply; The wall panel comprises a wall panel body and an insulating board, wherein the insulating board is embedded in the wall panel body; The high-voltage roller electrode comprises a metal roller and an insulating coating layer wrapped around the metal roller; The two ends of the metal roller are rotatably connected to the insulating plates of the two wall panels; The filamentary high-voltage electrodes are all arranged above the high-voltage roller electrodes; The filamentary high-voltage electrode and the high-voltage roller electrode are both connected to a power source, and the area between the filamentary high-voltage electrode and the high-voltage roller electrode is a plasma discharge area.

2. The device for treating porous material surface by plasma foaming at room temperature and pressure according to claim 1, characterized in that: Also included is a wire electrode mounting assembly; The wire electrode mounting assembly includes a mounting crossbeam and two insulating mounting plates; The mounting crossbeam is arranged below the crossbeam and can be raised and lowered relative to the crossbeam; Two insulating mounting plates are fixed on both sides of the mounting beam; The two ends of the filamentary high voltage electrode are respectively connected to two insulating mounting plates.

3. The device for treating porous material surface by plasma foaming at room temperature and pressure according to claim 2, characterized in that: The end of the wire-shaped high-voltage electrode is connected to the insulating mounting plate through a spring.

4. The device for treating porous material surface by plasma foaming at room temperature and pressure according to claim 2, characterized in that: Also included are a number of filament electrode gap adjustment assemblies; The wire electrode gap adjustment assembly includes a lifting adjustment bolt and an adjustment nut; The lifting adjustment bolt passes through the crossbeam, and the lower end is fixed to the mounting crossbeam; the adjustment nut is threadedly connected to the lifting adjustment bolt and is located above the crossbeam; Rotate the adjusting nut and lift the adjusting bolt to drive the mounting beam to move up and down.

5. The device for treating porous material surface by plasma foaming at room temperature and pressure according to claim 4, characterized in that: The wire electrode gap adjustment assembly also includes two balance adjustment bolts; The balance adjustment bolt passes through the crossbeam and is threadedly connected with the crossbeam, and the lower end of the bolt abuts against the mounting crossbeam; Two balance adjustment bolts are arranged on the left and right sides of the lifting adjustment bolt respectively; By rotating the balance adjustment bolt, the left and right heights of the mounting beam will be adjusted accordingly.

6. The device for treating porous material surface by plasma foaming at room temperature and pressure according to claim 2, characterized in that: Also included are a number of insulated wire-shaped electrode anti-vibration components; The upper end of the wire-shaped electrode anti-vibration component is fixed on the mounting crossbeam, and the wire-shaped high-voltage electrode abuts against the lower end of the wire-shaped electrode anti-vibration component.

7. The device for treating porous material surface by plasma foaming at room temperature and pressure according to claim 6, characterized in that: The lower end of the wire-shaped electrode anti-vibration component is provided with a groove, and the wire-shaped high-voltage electrode is pressed against the groove.

8. The device for treating porous material surface by plasma foaming at room temperature and pressure according to claim 7, characterized in that: The wire-shaped electrode anti-vibration component comprises an anti-vibration column, an insulating rod and a limiting sleeve; The lower end of the anti-vibration column is divided into a number of clamping flaps; The groove is provided at the lower end of the insulating rod, and the upper end of the insulating rod is clamped in a plurality of clamping petals of the anti-vibration column; The limiting sleeve is sleeved on the lower end of the anti-vibration column to fix the clamping state of its several clamping petals.

9. The device for treating porous material surface by plasma foaming at room temperature and pressure according to claim 1, characterized in that: The thickness of the insulating coating layer of the high-voltage roller electrode is 10 to 20 mm.

10. The device for treating porous material surface by plasma foaming at room temperature and pressure according to claim 3, characterized in that: The material of the filamentary high voltage electrode is tungsten-molybdenum alloy; The material of the main body of the wall panel is metal; The material of the insulating board is a polymer material; The material of the insulating coating is quartz, ceramic, rubber or polymer material; The material of the insulating mounting plate is a polymer material; The spring material is stainless steel.

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