CN110000003B - A nozzle-type negative ion emission gun based on hollow needle electrodes - Google Patents

A nozzle-type negative ion emission gun based on hollow needle electrodes Download PDF

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CN110000003B
CN110000003B CN201910240361.6A CN201910240361A CN110000003B CN 110000003 B CN110000003 B CN 110000003B CN 201910240361 A CN201910240361 A CN 201910240361A CN 110000003 B CN110000003 B CN 110000003B
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hollow needle
air
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nozzle
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CN110000003A (en
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李�杰
姜楠
沙利斌
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Dalian University of Technology
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00—Devices providing for corona discharge
    • H01T19/04—Devices providing for corona discharge having pointed electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
    • B03C3/011—Prefiltering; Flow controlling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
    • B03C3/0175—Amassing particles by electric fields, e.g. agglomeration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/36—Controlling flow of gases or vapour
    • B03C3/361—Controlling flow of gases or vapour by static mechanical means, e.g. deflector
    • B03C3/366—Controlling flow of gases or vapour by static mechanical means, e.g. deflector located in the filter, e.g. special shape of the electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/66—Applications of electricity supply techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/66—Applications of electricity supply techniques
    • B03C3/70—Applications of electricity supply techniques insulating in electric separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/06—Ionising electrode being a needle

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

一种基于空心针电极的喷头式负离子发射枪，属于环境保护、化工生产和机械加工等行业领域，包括静电放电组件和布气组件。静电放电组件中的布气腔均匀分布布气孔，空心针电极安装在布气孔上；中空金属管左端与布气腔连通，右端通过绝缘子同轴固定在绝缘腔体内部，金属管右侧为气体入口，用于通入清洁空气。布气组件中的绝缘喷头为槽状结构，布气腔设于喷头内；喷头两侧设通孔，右侧与绝缘腔体连通，左侧粘接绝缘环板，绝缘环板内口连接导流管。金属环状低压电极安装在喷头内壁上，金属网状低压电极放置于导流管。本发明结构简单，尺寸小，负离子产生效率高，电极腐蚀小；直接对准需要被处理的气体，显著提高粉尘、颗粒物或液滴的收集效率。

A nozzle-type negative ion emission gun based on a hollow needle electrode belongs to the fields of environmental protection, chemical production and mechanical processing, and includes electrostatic discharge components and gas distribution components. The air distribution cavity in the electrostatic discharge assembly has evenly distributed air holes, and the hollow needle electrode is installed on the air distribution hole; the left end of the hollow metal tube is connected to the air distribution cavity, and the right end is coaxially fixed inside the insulation cavity through an insulator. The right side of the metal tube is filled with gas Inlet for clean air. The insulating nozzle in the air distribution assembly has a trough-shaped structure, and the air distribution cavity is located inside the nozzle; through holes are provided on both sides of the nozzle, the right side is connected to the insulating cavity, the left side is bonded to an insulating ring plate, and the inner port of the insulating ring plate is connected to the conductor. flow tube. The metal ring-shaped low-voltage electrode is installed on the inner wall of the nozzle, and the metal mesh-shaped low-voltage electrode is placed on the diversion tube. The invention has a simple structure, small size, high negative ion generation efficiency and small electrode corrosion; it is directly aimed at the gas that needs to be processed, and significantly improves the collection efficiency of dust, particulate matter or liquid droplets.

Description

一种基于空心针电极的喷头式负离子发射枪A nozzle-type negative ion emission gun based on hollow needle electrodes

技术领域Technical field

本发明涉及一种基于空心针电极的喷头式负离子发射枪，将产生的负离子注入到含有粉体、颗粒或液滴的气体中，通过粉体、颗粒或液滴带电诱发静电凝并效应，提高粉尘、颗粒或液滴的捕集效率，属于环境保护、化工生产和机械加工等行业领域。The invention relates to a nozzle-type negative ion emission gun based on a hollow needle electrode. The generated negative ions are injected into the gas containing powder, particles or liquid droplets, and the electrostatic coagulation effect is induced by charging the powder, particles or liquid droplets, thereby improving the efficiency of the electrostatic coagulation effect. The collection efficiency of dust, particles or liquid droplets belongs to the fields of environmental protection, chemical production and mechanical processing.

背景技术Background technique

燃煤锅炉排烟、工业窑炉排烟、柴油机排烟等工业烟气中含有大量的粉尘，喷漆、涂装、焊接等行业排放的废气中含有粉尘、有机气溶胶和颗粒物，以及化工和电力行业冷却塔排放的水汽，严重的污染了人民赖以生存的大气环境，同时也造成大量的原料浪费，必须对这些排气加以治理，研发粉尘、颗粒物和液滴收集技术。Industrial flue gases such as coal-fired boiler exhaust, industrial kiln exhaust, and diesel engine exhaust contain a large amount of dust. Exhaust gases from spray painting, coating, welding and other industries contain dust, organic aerosols, and particulate matter, as well as chemical and electric power industries. The water vapor emitted by industrial cooling towers has seriously polluted the atmospheric environment that people rely on for survival, and also caused a large amount of waste of raw materials. These exhaust emissions must be controlled and dust, particulate matter and droplet collection technologies must be developed.

静电收集技术研发与应用有100多年的历史，其原理是用静电放电产生负离子，需要处理的气体通过静电放电区域时，负离子与气体中的粉尘、颗粒物或液滴通过碰撞或静电力等吸附在粉尘、颗粒物或液滴表面上，使粉尘、颗粒物或液滴带电(荷电)，然后带电的粉尘、颗粒物或液滴在电场力作用下沉积在收集极(例如板或筒)上，最后通过机械力、重力或液体冲洗等方式将粉尘、颗粒物或液滴收集下来，实现排气净化、原材料回收再利用。同时，带电的粉尘、颗粒物或液滴与不带电的粉尘、颗粒物或液滴之间，会产生静电吸引，从而使粉尘、颗粒物或液滴粒径增大，一是进一步增加带电效果，二是使重力效应增加，进而达到增加粉尘、颗粒物或液滴收集效果，尤其是对粒径小的粉尘、颗粒物或液滴的收集效果。The research, development and application of electrostatic collection technology has a history of more than 100 years. Its principle is to use electrostatic discharge to generate negative ions. When the gas to be processed passes through the electrostatic discharge area, the negative ions and dust, particles or droplets in the gas are adsorbed on the gas through collision or electrostatic force. On the surface of dust, particles or droplets, the dust, particles or droplets are charged (charged), and then the charged dust, particles or droplets are deposited on the collector (such as a plate or cylinder) under the action of the electric field force, and finally pass through Dust, particles or liquid droplets are collected by mechanical force, gravity or liquid flushing to achieve exhaust purification and raw material recycling. At the same time, electrostatic attraction will occur between charged dust, particles or liquid droplets and uncharged dust, particles or liquid droplets, thereby increasing the particle size of the dust, particles or liquid droplets. Firstly, the charging effect is further increased; secondly, The gravity effect is increased, thereby increasing the collection effect of dust, particles or liquid droplets, especially the collection effect of dust, particles or liquid droplets with small particle sizes.

在目前研究应用的静电收集技术中，是被处理气体整体通过静电放电区域，使粉尘、颗粒物或液滴带上电荷，这样被处理气体自身性质(如温度、湿度、气体中物质的浓度等)将影响静电放电状态，以及被处理气体中腐蚀性物质会腐蚀电极，进而影响静电放电产生负离子数目，从而导致粉尘、颗粒物或液滴带上电荷数目少或不足，最终影响静电收集效率。再者，如果被处理气体流量很大，为了保证获得高的收集效率，就必须将静电收集器体积做的很大，由此导致静电收集器设备成本高，需要足够的占地面积，对有些生产过程不适合，如原料回收生产过程等。In the current research and application of electrostatic collection technology, the whole gas to be processed passes through the electrostatic discharge area, so that the dust, particles or droplets are charged. In this way, the properties of the gas to be processed (such as temperature, humidity, concentration of substances in the gas, etc.) It will affect the state of electrostatic discharge, and the corrosive substances in the gas being processed will corrode the electrodes, thereby affecting the number of negative ions produced by electrostatic discharge, resulting in a small or insufficient number of charges on dust, particles or droplets, ultimately affecting the electrostatic collection efficiency. Furthermore, if the flow rate of the gas to be processed is large, in order to ensure high collection efficiency, the volume of the electrostatic collector must be very large, resulting in high cost of electrostatic collector equipment and the need for sufficient floor space. For some The production process is not suitable, such as raw material recycling production process, etc.

发明内容Contents of the invention

本发明针对被处理含粉尘、颗粒物或液滴气体全部通过静电收集器，导致静电收集器体积大、气体成分影响静电放电产生负离子数量和静电放电电极腐蚀等问题，提出一种基于空心针电极的喷头式负离子发射枪，是利用阵列式多空心针电极系统产生静电放电，洁净的空气进入静电放电区域，空气中气体分子被电离形成负离子后从发射枪的出口排出后进入被处理的被处理含粉尘、颗粒物或液滴气体中，使粉尘、颗粒物或液滴带电、凝并、粒径变大，增加了粉尘、颗粒物或液滴收集过程中重力、自沉降或荷电的效果，提高了粉尘、颗粒物或液滴收集效率。This invention proposes a method based on hollow needle electrodes to address the problems that all gases containing dust, particles or droplets to be processed pass through the electrostatic collector, resulting in a large volume of the electrostatic collector, gas components affecting the number of negative ions produced by electrostatic discharge, and corrosion of electrostatic discharge electrodes. The nozzle-type negative ion launcher uses an array type multi-hollow needle electrode system to generate electrostatic discharge. Clean air enters the electrostatic discharge area. The gas molecules in the air are ionized to form negative ions and are discharged from the outlet of the launcher into the processed content. In the dust, particulate matter or liquid droplet gas, the dust, particulate matter or liquid droplet is charged, condensed, and the particle size becomes larger, which increases the effect of gravity, self-sedimentation or charging during the collection process of dust, particulate matter or liquid droplet, and improves the efficiency of dust , particle or droplet collection efficiency.

为了达到上述目的，本发明采用的技术方案为：In order to achieve the above objects, the technical solutions adopted by the present invention are:

一种基于空心针电极的喷头式负离子发射枪，包括静电放电组件和布气组件。A nozzle-type negative ion emission gun based on a hollow needle electrode includes an electrostatic discharge component and a gas distribution component.

所述的静电放电组件包括阵列式的空心针电极1、金属管2、布气腔6、绝缘子11。所述的布气腔6上均匀分布布气孔7，空心针电极1安装在布气孔7上；所述的金属管2为中空结构，其左端与布气腔6连通，右端通过绝缘子11同轴固定在绝缘腔体9内部，金属管右侧为气体入口4，用于通入清洁空气。The electrostatic discharge component includes an array-type hollow needle electrode 1, a metal tube 2, an air distribution chamber 6, and an insulator 11. The air distribution holes 7 are evenly distributed on the air distribution chamber 6, and the hollow needle electrode 1 is installed on the air distribution holes 7; the metal tube 2 is a hollow structure, its left end is connected to the air distribution chamber 6, and the right end is coaxial through the insulator 11 It is fixed inside the insulating cavity 9. The right side of the metal tube is the gas inlet 4, which is used to introduce clean air.

所述的布气组件包括绝缘腔体9、喷头12、金属环状低压电极8或金属网状低压电极10，中空金属管2内部为气体导流腔3。所述绝缘腔体9是由绝缘材料制成的筒状结构，喷头12是由绝缘材料制成的槽状结构，布气腔6设于槽状结构内部；所述喷头12两侧均开设通孔，右侧开孔处与绝缘腔体9连通，左侧开孔处粘接一个绝缘环板，在绝缘环板内口连接一段导流管13。所述金属环状低压电极8安装在喷头12左侧开口处内壁上。所述金属网状低压电极10放置于导流管13上。The gas distribution component includes an insulating cavity 9, a nozzle 12, a metal ring-shaped low-voltage electrode 8 or a metal mesh-shaped low-voltage electrode 10. The interior of the hollow metal tube 2 is a gas diversion chamber 3. The insulating cavity 9 is a cylindrical structure made of insulating material, the nozzle 12 is a trough-shaped structure made of insulating material, and the air distribution chamber 6 is located inside the trough-like structure; there are openings on both sides of the nozzle 12 hole, the right opening is connected to the insulating cavity 9, an insulating ring plate is bonded to the left opening, and a section of guide pipe 13 is connected to the inner opening of the insulating ring plate. The metal ring-shaped low-voltage electrode 8 is installed on the inner wall of the left opening of the nozzle 12 . The metal mesh low-voltage electrode 10 is placed on the flow tube 13 .

另外，所述的布气组件可以仅包括绝缘腔体9和喷头12，此时，阵列式的空心针电极系统是孤立的多针电极系统。In addition, the gas distribution assembly may only include the insulating cavity 9 and the nozzle 12. In this case, the array-type hollow needle electrode system is an isolated multi-needle electrode system.

所述的金属管2与高压电源的输出端连接，金属环状低压电极8与高压电源的低压端连接后再与地电极连接，采用负直流高压电源给阵列式的多针空心电极1供电，调整电源输出电压使空心针电极1周围产生静电放电。The metal tube 2 is connected to the output end of the high-voltage power supply, and the metal ring-shaped low-voltage electrode 8 is connected to the low-voltage end of the high-voltage power supply and then connected to the ground electrode. A negative DC high-voltage power supply is used to supply power to the array-type multi-pin hollow electrode 1. Adjust the power supply output voltage to generate electrostatic discharge around the hollow needle electrode 1.

洁净空气从气体入口4导入气体导流腔3，再从布气腔6上均匀分布的空心针电极1导入静电放电区域，喷头12结构使通过布气腔6周围气隙的空气形成涡流驱使空气进入静电放电区域，产生含负离子气体，经导流管13导出。空气中气体分子被电离形成负离子后从发射枪的出口排除后进入被处理含粉尘、颗粒物或液滴气体中，使粉尘、颗粒物或液滴带电、凝并、粒径变大，增加了粉尘、颗粒物或液滴收集过程中重力、自沉降或荷电的效果，提高了粉尘、颗粒物或液滴收集效率。Clean air is introduced into the gas diversion chamber 3 from the gas inlet 4, and then introduced into the electrostatic discharge area from the evenly distributed hollow needle electrodes 1 on the air distribution chamber 6. The structure of the nozzle 12 causes the air passing through the air gaps around the air distribution chamber 6 to form a vortex to drive the air Entering the electrostatic discharge area, negative ion-containing gas is generated and is led out through the guide tube 13 . The gas molecules in the air are ionized to form negative ions and are discharged from the outlet of the launch gun and then enter the gas being processed containing dust, particles or liquid droplets, causing the dust, particles or liquid droplets to be charged, condensed, and the particle size becomes larger, increasing the amount of dust, particles, or liquid droplets. The effects of gravity, self-sedimentation or charging during the collection process of particles or droplets improve the collection efficiency of dust, particles or droplets.

进一步的，所述的阵列式的空心针电极系统是孤立的多针电极系统，或者是多针-金属环电极系统，或者多针-金属网电极系统，多空心针电极是静电放电的发生极，与其相对应的无穷远或者金属环电极或者金属网电极是低压电极。Further, the array-type hollow needle electrode system is an isolated multi-needle electrode system, or a multi-needle-metal ring electrode system, or a multi-needle-metal mesh electrode system, and the multi-hollow needle electrode is the generating electrode of electrostatic discharge. , the corresponding infinity or metal ring electrode or metal mesh electrode is a low voltage electrode.

进一步的，所述空心针电极1安装在布气腔6上，相邻空心针-空心针电极间距为10mm-100mm，空心针的长度5mm-100mm，空心针的内径1-5mm、外径2-10mm。Further, the hollow needle electrode 1 is installed on the air distribution chamber 6, the distance between adjacent hollow needles and hollow needle electrodes is 10mm-100mm, the length of the hollow needle is 5mm-100mm, the inner diameter of the hollow needle is 1-5mm, and the outer diameter is 2 -10mm.

一种基于空心针电极的喷头式负离子发射枪的应用，具体为：用于处理含粉尘、颗粒物或液滴的待处理气体时，将所述喷头式负离子发射枪14安装在设备17上，设备17内部流经被处理气体。调整清洁空气流量使喷头式负离子发射枪产生的含负离子气体在发射枪出口15的压强大于被处理气体进入设备17内的压强，或者调整负离子发射枪气体流动方向16，确保被处理气体不进入喷头式负离子发射枪14内部。An application of a nozzle-type negative ion emission gun based on a hollow needle electrode, specifically: when used to process gas to be treated containing dust, particles or droplets, the nozzle-type negative ion emission gun 14 is installed on the equipment 17, and the equipment 17 The gas to be processed flows inside. Adjust the flow of clean air so that the pressure of the negative ion-containing gas generated by the nozzle-type negative ion launch gun at the launch gun outlet 15 is greater than the pressure of the gas to be processed entering the device 17, or adjust the gas flow direction 16 of the negative ion launch gun to ensure that the gas to be processed does not enter the nozzle. Inside the negative ion emission gun 14.

进一步的，所述设备17包括管路通道、处理塔等。Further, the equipment 17 includes pipeline channels, treatment towers, etc.

与现有技术相比，本发明的有益效果为：本发明提供的喷头式负离子发射枪直接对准需要被处理的气体，使气体中粉尘、颗粒物或液滴带电，产生粉尘、颗粒物或液滴发生凝并、尺寸变大的效果，提高粉尘、颗粒物或液滴的收集效率，优点是结构简单，尺寸小，负离子产生效率高，电极腐蚀小。Compared with the existing technology, the beneficial effects of the present invention are: the nozzle-type negative ion launch gun provided by the present invention is directly aimed at the gas that needs to be processed, charging the dust, particles or liquid droplets in the gas to generate dust, particles or liquid droplets The effect of coalescence and size enlargement occurs, which improves the collection efficiency of dust, particles or liquid droplets. The advantages are simple structure, small size, high negative ion generation efficiency and low electrode corrosion.

附图说明Description of the drawings

图1为一种基于空心针电极的喷头式负离子发射枪结构示意图(阵列式的空心针电极系统是多针-金属环电极系统)；Figure 1 is a schematic structural diagram of a nozzle-type negative ion emission gun based on hollow needle electrodes (the array-type hollow needle electrode system is a multi-needle-metal ring electrode system);

图2为一种基于空心针电极的喷头式负离子发射枪结构示意图(阵列式的空心针电极系统是多针-金属网电极系统)；Figure 2 is a schematic structural diagram of a nozzle-type negative ion emission gun based on hollow needle electrodes (the array-type hollow needle electrode system is a multi-needle-metal mesh electrode system);

图3为喷头式负离子发射枪与被处理气体装置配置示意图；Figure 3 is a schematic diagram of the configuration of the nozzle-type negative ion emission gun and the gas device to be processed;

图中：1空心针电极；2金属管；3气体导流腔；4气体入口；5气体出口；6布气腔；7布气孔；8金属环状低压电极；9绝缘腔体；10金属网状低压电极；11绝缘子；12喷头；13导流管；14喷头式负离子发射枪；15喷头式负离子发射枪出口；16喷头式负离子发射枪气体流动方向；17设备；18被处理气体流动方向。In the picture: 1 hollow needle electrode; 2 metal tube; 3 gas diversion chamber; 4 gas inlet; 5 gas outlet; 6 gas chamber; 7 gas holes; 8 metal ring low-voltage electrode; 9 insulating cavity; 10 metal mesh shaped low-voltage electrode; 11 insulator; 12 nozzle; 13 guide tube; 14 nozzle-type negative ion emission gun; 15 nozzle-type negative ion emission gun outlet; 16 nozzle-type negative ion emission gun gas flow direction; 17 equipment; 18 processed gas flow direction.

具体实施方式Detailed ways

下文参照附图说明本发明的一个实施例。An embodiment of the present invention is described below with reference to the accompanying drawings.

图1、图2为一种基于空心针电极的喷头式负离子发射枪结构示意图。Figures 1 and 2 are schematic structural diagrams of a nozzle-type negative ion emission gun based on hollow needle electrodes.

喷头式负离子发射枪14是由静电放电组件和布气组件构成。The nozzle-type negative ion launching gun 14 is composed of an electrostatic discharge component and a gas distribution component.

所述静电放电组件是由空心针电极1、金属管2和绝缘子11组成。布气腔6上均匀分布布气孔7，空心针电极1安装在布气孔7上；金属管2左端与布气腔6连通，右端通过绝缘子11同轴固定在绝缘腔体9内部。其中，空心针电极长度10mm、内径2mm、外径4mm、相邻针间距15mm，分布在布气腔6左侧区域80mm范围内，布气腔6直径100mm、腔体厚度10mm、布气孔7直径3mm，金属管2由外径20mm、厚度1mm、长200mm的不锈钢管制成，绝缘子11内径15mm、外径25mm。The electrostatic discharge component is composed of a hollow needle electrode 1, a metal tube 2 and an insulator 11. The air distribution holes 7 are evenly distributed on the air distribution chamber 6, and the hollow needle electrode 1 is installed on the air distribution holes 7; the left end of the metal tube 2 is connected with the air distribution chamber 6, and the right end is coaxially fixed inside the insulation cavity 9 through the insulator 11. Among them, the length of the hollow needle electrode is 10mm, the inner diameter is 2mm, the outer diameter is 4mm, and the distance between adjacent needles is 15mm. It is distributed within the 80mm range on the left side of the air distribution chamber 6. The diameter of the air distribution chamber 6 is 100mm, the thickness of the cavity is 10mm, and the diameter of the air distribution hole 7 3mm, the metal pipe 2 is made of a stainless steel pipe with an outer diameter of 20mm, a thickness of 1mm, and a length of 200mm, and the insulator 11 has an inner diameter of 15mm and an outer diameter of 25mm.

所述布气组件包括气体导流腔3、布气腔6、绝缘腔体9、金属环状低压电极8和喷头12。所述中空金属管2内部为气体导流腔3，喷头12是由直径150mm、厚度50mm制成一个槽状结构，槽底部开成直径45mm的孔用于连接气体绝缘腔体9，槽内径130mm、厚度10mm，槽开口处粘接一个内径100mm、外径150mm、厚度5mm聚乙烯环板；并在槽上端口处安放一个外径130mm、线径5mm的铜环，作为金属环状低压电极8；绝缘腔体9的另一端用聚乙烯板同轴密封安装绝缘子11。The gas distribution assembly includes a gas guide chamber 3, a gas distribution chamber 6, an insulating cavity 9, a metal ring-shaped low-voltage electrode 8 and a nozzle 12. The inside of the hollow metal tube 2 is a gas diversion chamber 3. The nozzle 12 is made of a trough-like structure with a diameter of 150mm and a thickness of 50mm. A hole with a diameter of 45mm is opened at the bottom of the trough for connecting the gas insulation cavity 9. The inner diameter of the trough is 130mm. , thickness 10mm, a polyethylene ring plate with an inner diameter of 100mm, an outer diameter of 150mm, and a thickness of 5mm is bonded to the slot opening; and a copper ring with an outer diameter of 130mm and a wire diameter of 5mm is placed at the upper port of the slot as a metal ring-shaped low-voltage electrode 8 ; The other end of the insulating cavity 9 is installed with an insulator 11 coaxially sealed with a polyethylene plate.

将制作好的喷头式负离子发射枪14中金属管2与高压电源的输出端连接，金属环状低压电极8与高压电源的低压端连接后再与地电极连接。Connect the metal tube 2 in the prepared nozzle-type negative ion emission gun 14 to the output end of the high-voltage power supply, and the metal ring-shaped low-voltage electrode 8 to the low-voltage end of the high-voltage power supply and then to the ground electrode.

以上所述实施例仅表达本发明的实施方式，但并不能因此而理解为对本发明专利的范围的限制，应当指出，对于本领域的技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些均属于本发明的保护范围。The above-mentioned embodiments only express the implementation of the present invention, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for those skilled in the art, without departing from the concept of the present invention, Several modifications and improvements can also be made, which all belong to the protection scope of the present invention.

Claims (3)

1. The spray nozzle type negative ion emission gun based on the hollow needle electrode is characterized by comprising an electrostatic discharge assembly and a gas distribution assembly;
the electrostatic discharge assembly comprises an array type hollow needle electrode (1), a metal tube (2), an air distribution cavity (6) and an insulator (11); the air distribution cavity (6) is uniformly provided with air distribution holes (7), and the hollow needle electrode (1) is arranged on the air distribution holes (7); the metal tube (2) is of a hollow structure, the left end of the metal tube is communicated with the air distribution cavity (6), the right end of the metal tube is coaxially fixed in the insulating cavity (9) through an insulator (11), and the right side of the metal tube is provided with a gas inlet (4) for introducing clean air;
the gas distribution assembly comprises an insulating cavity (9), a spray head (12), a metal annular electrode (8) or a metal net-shaped low-voltage electrode (10), and the array type hollow needle electrode system is a multi-needle-metal annular electrode system or a multi-needle-metal net electrode system; the hollow metal tube (2) is internally provided with a gas diversion cavity (3); the insulation cavity (9) is of a cylindrical structure made of an insulation material, the spray head (12) is of a groove-shaped structure made of the insulation material, and the air distribution cavity (6) is arranged in the groove-shaped structure; the two sides of the spray head (12) are provided with through holes, the opening on the right side is communicated with the insulating cavity (9), the opening on the left side is bonded with an insulating annular plate, and the inner opening of the insulating annular plate is connected with a section of flow guide pipe (13); the metal annular electrode (8) is arranged on the inner wall of the opening at the left side of the spray head (12); the metal net-shaped low-voltage electrode (10) is arranged on the flow guide pipe (13);
the metal tube (2) is connected with the output end of the high-voltage power supply, the metal annular electrode (8) is connected with the low-voltage end of the high-voltage power supply and then connected with the ground electrode, the negative direct-current high-voltage power supply is adopted to supply power to the array type hollow needle electrodes (1), and the output voltage of the power supply is adjusted to enable static discharge to be generated around the hollow needle electrodes (1);
clean air is led into the air guide cavity (3) from the air inlet (4), hollow needle electrodes (1) uniformly distributed on the air distribution cavity (6) are led into the electrostatic discharge area, the nozzle (12) structure enables air passing through air gaps around the air distribution cavity (6) to form vortex so as to drive the air to enter the electrostatic discharge area, negative ion-containing air is generated, and the negative ion-containing air is led out through the guide pipe (13); the gas molecules in the air are ionized to form negative ions, and then discharged from the outlet of the emission gun and enter the processed gas containing dust, particles or liquid drops, so that the dust, particles or liquid drops collecting efficiency is improved.
2. A hollow needle electrode based spray head type negative ion emission gun according to claim 1, characterized in that the gas distribution assembly only comprises an insulating cavity (9) and a spray head (12), and the array type hollow needle electrode system is an isolated multi-needle electrode system.
3. The shower nozzle type anion emission rifle based on hollow needle electrode according to claim 1 or 2, characterized in that, hollow needle electrode (1) is installed on cloth air cavity (6), adjacent hollow needle-hollow needle electrode interval is 10mm-100mm, hollow needle's length 5mm-100mm, hollow needle's internal diameter 1-5mm, external diameter 2-10mm.
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US5388769A (en) * 1993-09-20 1995-02-14 Illinois Tool Works Inc. Self-cleaning ionizing air gun
CN104689918A (en) * 2015-03-23 2015-06-10 中冶赛迪工程技术股份有限公司 Wet-type electric deduster
CN107138277A (en) * 2017-04-20 2017-09-08 中国科学院合肥物质科学研究院 The unipolarity particulate matter charge device and method of integrated free ion trapping function
CN209715396U (en) * 2019-03-28 2019-12-03 大连理工大学 A Nozzle Type Anion Emitting Gun Based on Hollow Needle Electrode

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Publication number Priority date Publication date Assignee Title
US5388769A (en) * 1993-09-20 1995-02-14 Illinois Tool Works Inc. Self-cleaning ionizing air gun
CN104689918A (en) * 2015-03-23 2015-06-10 中冶赛迪工程技术股份有限公司 Wet-type electric deduster
CN107138277A (en) * 2017-04-20 2017-09-08 中国科学院合肥物质科学研究院 The unipolarity particulate matter charge device and method of integrated free ion trapping function
CN209715396U (en) * 2019-03-28 2019-12-03 大连理工大学 A Nozzle Type Anion Emitting Gun Based on Hollow Needle Electrode

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