Novel low-temperature plasma air knife

Abstract

The utility model discloses a novel low-temperature plasma air knife which comprises a shunting main body, an air duct is arranged in the shunting main body, air inlet connectors are arranged at two ends of the air duct of the shunting main body, a plurality of air outlet connectors which are distributed at intervals are arranged in the middle of the air duct of the shunting main body, and the air inlet connectors are communicated with a compressed air source. A plasma nozzle assembly is arranged on the air outlet interface, an electric interface is further arranged on the shunting main body, the plasma nozzle assembly comprises a nozzle, an insulating connecting piece, a negative electrode unit and a positive electrode unit, the nozzle is connected with the air outlet interface of the shunting main body through the insulating connecting piece, the positive electrode unit is arranged in the insulating connecting piece, and a through hole is formed in the positive electrode unit; a cathode unit is arranged on the outer side of the nozzle. The low-temperature plasma diffusion device is wide in diffusion range, capable of outputting low-temperature plasma for a long time, high in processing efficiency, low in processing cost, convenient to disassemble and assemble and long in service life, and meets the processing requirements of low temperature requirement and large-area cleaning.

Description

TECHNICAL FIELD

[0001] The utility model relates to air knife cleaning technical field especially relates to a novel low temperature plasma air knife. BACKGROUND

[0002] With the plasma surface cleaning machine in the market is in extensive application, various manufacturers produce plasma nozzle cannot satisfy customer large area cleaning requirement, and material is one of important factors of whether can produce plasma, and the plasma nozzle on market is difficult to match different large area product use, and plasma spray gun temperature is higher, and the common diffusion range is shorter, and cannot improve efficiency.

[0003] Therefore, it is urgent to design a novel low temperature plasma air knife, diffusion range is wide, can long time output temperature low temperature plasma, satisfies temperature demand lower and large area cleaning processing demand, processing efficiency is high, processing cost is low, and disassembly is convenient, and service life is long. UTILITY MODEL CONTENTS

[0004] In order to solve the above problems, the technical scheme adopted by the utility model is as follows:

[0005] A novel low temperature plasma air knife, characterized by comprising a shunt main body, a wind channel is arranged in the shunt main body, the shunt main body is provided with an air inlet at both ends of the wind channel, a plurality of air outlets are arranged in the middle of the shunt main body, the air inlet is communicated with a compressed air source, a plasma nozzle assembly is arranged on the air outlet, an electric interface for connecting with a high-voltage wire is further arranged on the shunt main body, and the plasma nozzle assembly can output low-temperature plasma.

[0006] Preferably, the plasma nozzle assembly comprises a nozzle, an insulating connecting piece, a negative electrode unit and a positive electrode unit.

[0007] The nozzle is connected with the air outlet of the shunt main body through the insulating connecting piece, the positive electrode unit is arranged in the insulating connecting piece and extends to the air inlet of the nozzle at the other end, a through hole is formed in the positive electrode unit from one end to the other end, and the negative electrode unit is arranged on the outside of the nozzle.

[0008] Preferably, the negative electrode unit is a copper plate, and the positive electrode unit is a tungsten rod.

[0009] Preferably, the positive electrode unit is a conical structure with a gradually decreasing outer diameter towards the nozzle, and the through hole is a conical hole with a gradually decreasing inner diameter towards the nozzle.

[0010] Preferably, the insulating connecting piece is threadedly connected with the nozzle and the air outlet respectively, and the negative electrode unit is detachably connected with the nozzle.

[0011] Preferably, the surface of the shunt body is provided with a chromium plating layer.

[0012] Preferably, the material of the insulating connecting piece is high-frequency zirconia ceramic.

[0013] Preferably, the negative electrode unit has two and is oppositely arranged on both sides of the nozzle, and the plurality of nozzles are connected through the negative electrode unit.

[0014] Preferably, the nozzle is provided with a threaded locking hole, the negative electrode unit is provided with a mounting hole corresponding to the locking hole, and the negative electrode unit is detachably connected with the nozzle through the mounting hole, the threaded locking hole and a locking screw.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The utility model has wide diffusion range, can output low-temperature plasma for a long time, meets the processing demand of low-temperature demand and large-area cleaning, has high processing efficiency, low processing cost, is convenient to disassemble and assemble and has long service life.

[0017] 2. The positive electrode unit is a tungsten rod, compared with copper in the prior art, the discharge temperature is low, the cost is low, it is more economical, and it is suitable for processing demand of low temperature demand.

[0018] 3. The positive electrode unit is a conical structure with a conical through hole, the temperature is effectively reduced, and the plasma with a temperature of 40 DEG C can be output. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Fig. 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Among them: shunt body 1, plasma nozzle assembly 2, air duct 11, air inlet 12, air outlet 13, nozzle 21, insulating connecting piece 22, negative electrode unit 23, positive electrode unit 24, threaded locking hole 211, mounting hole 231, through hole 241. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The preferred embodiments of the utility model are shown in the drawings. However, the utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," "up," "down," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0026] like Figs. 1-2 As shown, a novel low-temperature plasma air knife includes a diversion body 1, an air duct 11 disposed within the diversion body 1, air inlets 12 disposed at both ends of the air duct 11, and multiple alternately distributed air outlets 13 disposed in the middle of the air duct 11. The air inlets 12 are connected to a compressed air source (not shown in the figure), and plasma nozzle assemblies 2 are disposed on the air outlets 13. The diversion body 1 also has an electrical interface (not shown in the figure) for connection to a high-voltage line. The plasma nozzle assembly 2 can output plasma at a low temperature.

[0027] In this embodiment, multiple plasma nozzle assemblies 2 are axially distributed and connected to each air outlet 13 of the diversion body 1, so that each plasma assembly outputs a stable and low-temperature plasma during operation, thereby meeting the requirements for large-area cleaning and greatly improving processing efficiency.

[0028] In this embodiment, an air inlet interface 12 is set at both ends of the air duct 11 to ensure uniform air output from each air outlet interface 13, thereby ensuring stable temperature of each output plasma.

[0029] Furthermore, the plasma nozzle assembly 2 includes a nozzle 21, an insulating connector 22, a negative electrode unit 23, and a positive electrode unit 24.

[0030] The nozzle 21 is connected to the air outlet 13 of the diversion body 1 through the insulating connector 22. The positive electrode unit 24 is disposed in the insulating connector 22 and the other end extends into the air inlet end of the nozzle 21. The positive electrode unit 24 has a through hole 241 that runs from one end to the other end. The negative electrode unit 23 is disposed on the outside of the nozzle 21.

[0031] In this embodiment, after being powered on, the negative electrode unit 23 emits electrons. Under the action of the electric field, these electrons move towards the anode unit through the nozzle 21. During this process, they collide with the gas molecules of the compressed gas source and ionize them, thereby generating plasma. Then, under the action of the compressed gas source, the plasma is ejected from each nozzle 21 to form a plasma air knife, thereby meeting the requirements for large-area cleaning and greatly improving production efficiency.

[0032] Furthermore, such as Figs. 1-2 As shown, the negative electrode unit 23 is a copper plate, and the positive electrode unit 24 is a tungsten rod.

[0033] In this embodiment, by using a tungsten rod as the positive electrode unit 24, the discharge temperature is lower and the cost is lower than that of copper in the prior art, making it more economical and suitable for processing requirements with lower temperature requirements. Therefore, by adopting a multi-phase distributed nozzle 21 component structure design, the air knife can meet the processing requirements of low temperature requirements and large-area cleaning, thereby improving processing efficiency and processing stability.

[0034] Furthermore, such as Figs. 1-2 As shown, in order to make the plasma output more concentrated and smooth, and the temperature more stable, the positive electrode unit 24 is a conical structure with an outer diameter that gradually decreases towards the nozzle 21, and the through hole 241 is a conical hole with an inner diameter that gradually decreases towards the nozzle 21.

[0035] In this embodiment, the length of the tungsten rod is 30mm to 40mm, and the temperature of the plasma output is maintained at 35℃ to 40℃, effectively reducing the temperature.

[0036] Furthermore, such as Figs. 1-2 As shown, in order to improve the convenience of disassembling and replacing the nozzle 21, the insulating connector 22 is threadedly connected to the nozzle 21 and the air outlet 13 respectively, and the negative electrode unit 23 is detachably connected to the nozzle 21.

[0037] Furthermore, in order to increase the surface smoothness, corrosion resistance and wear resistance of the diversion body 1 and improve its service life, the surface of the diversion body 1 is provided with a chrome plating layer.

[0038] Furthermore, in order to improve the high temperature resistance and corrosion resistance of the insulating connector 22 and increase its service life, the insulating connector 22 is made of high-frequency zirconia ceramic.

[0039] In this embodiment, the insulating connector 22 can withstand temperatures up to 1400°C.

[0040] Furthermore, such as Figs. 1-2 As shown, in order to improve the reliability and convenience of the connection between the negative electrode unit 23 and the multiple nozzles 21, and to improve the plasma output effect, there are two negative electrode units 23, which are arranged opposite to each other on both sides of the nozzles 21, and the multiple nozzles 21 are connected through the negative electrode units 23.

[0041] Furthermore, such as Figs. 1-2 As shown, in order to improve the connection reliability and ease of disassembly and assembly between the negative electrode unit 23 and the nozzle 21, the nozzle 21 is provided with a threaded locking hole 211, and the negative electrode unit 23 is provided with a mounting hole 231 corresponding to the locking hole. The negative electrode unit 23 is detachably connected to the nozzle 21 through the mounting hole 231, the screw locking hole 211 and the locking screw (not shown in the figure).

[0042] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model patent.

Claims

1. A novel low-temperature plasma air knife, characterized in that, The device includes a main body for distributing air, which contains an air duct. The main body has air inlets at both ends of the air duct and multiple air outlets arranged alternately in the middle of the air duct. The air inlets are connected to a compressed air source, and the air outlets are equipped with plasma nozzle assemblies. The main body also has an electrical interface for connecting to a high-voltage line. The plasma nozzle assembly can output plasma at a lower temperature.

2. The novel low-temperature plasma air knife according to claim 1, characterized in that, The plasma nozzle assembly includes a nozzle, an insulating connector, a negative electrode unit, and a positive electrode unit: The nozzle is connected to the air outlet of the diverter body through an insulating connector. The positive electrode unit is disposed inside the insulating connector, and the other end extends into the air inlet of the nozzle. The positive electrode unit has a through hole that runs from one end to the other. The negative electrode unit is disposed on the outside of the nozzle.

3. A novel low-temperature plasma air knife according to claim 2, characterized in that, The negative electrode unit is a copper plate, and the positive electrode unit is a tungsten rod.

4. A novel low-temperature plasma air knife according to claim 3, characterized in that, The positive electrode unit is a conical structure with an outer diameter that gradually decreases towards the nozzle, and the through hole is a conical hole with an inner diameter that gradually decreases towards the nozzle.

5. A novel low-temperature plasma air knife according to claim 2, characterized in that, The insulating connector is threadedly connected to the nozzle and the air outlet, respectively, and the negative electrode unit is detachably connected to the nozzle.

6. A novel low-temperature plasma air knife according to claim 1, characterized in that, The surface of the diversion body is provided with a chrome plating layer.

7. A novel low-temperature plasma air knife according to claim 2 or 5, characterized in that, The insulating connector is made of high-frequency zirconia ceramic.

8. A novel low-temperature plasma air knife according to claim 2 or 5, characterized in that, There are two negative electrode units, which are arranged opposite each other on both sides of the nozzle, and multiple nozzles are connected through the negative electrode units.

9. A novel low-temperature plasma air knife according to claim 8, characterized in that, The nozzle is provided with a threaded locking hole, and the negative electrode unit is provided with a mounting hole corresponding to the locking hole. The negative electrode unit is detachably connected to the nozzle through the mounting hole, the screw locking hole and the locking screw.

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