焊接除尘净化设备的使用
焊接烟尘收集装置,焊接除尘净化设备,根据客户提供的资料及现场勘察,车间的生产焊接区域的5个手动焊接工位产生的烟尘需要治理,根据工位摆放位置,配置收集罩,收集罩周边配软垂帘,主管道采用吊架方式固定在上端,依据风速,风量变化,管道直径逐渐变径以平衡管路末端风速风量平衡性能。支管与主管道成30°布置,以减少因弯头、三通等管件造成的压力损失。因焊件较大、焊接点不固定,故选用工作区域的固定收集罩;生产过程中,需在此收集罩下方操作,对此焊接范围内烟尘废气进行捕集收集。
Welding smoke and dust collection device, welding dust purification equipment, according to the information provided by the customer and on-site investigation, the smoke and dust generated by the 5 manual welding stations in the production welding area of the workshop need to be treated. According to the position of the stations, a collection cover is configured, and soft vertical curtains are installed around the collection cover. The main pipeline is fixed at the upper end using a hanger. According to the changes in wind speed and air volume, the diameter of the pipeline gradually changes to balance the wind speed and air volume balance performance at the end of the pipeline. Branch pipes and main pipes are arranged at a 30 ° angle to reduce pressure losses caused by fittings such as elbows and tees. Due to the large size of the welded parts and the unstable welding points, a fixed collection cover in the working area is selected; During the production process, it is necessary to operate under this collection hood to capture and collect smoke, dust, and exhaust gas within the welding range.
焊接烟尘收集装置,焊接废气收集设备收集装置
Welding smoke and dust collection device, welding exhaust gas collection device collection device
(1)收集罩
(1) Collect cover
吸气收集罩按现场尺寸配制,通过吊架固定于顶部,以达到焊接时更大的工作操作范围。数量:?5套
The suction collection hood is prepared according to the on-site size and fixed to the top through a hanger to achieve a larger working range during welding. quantity 5 sets
收集罩、外管材料:镀锌板
Collect cover and outer pipe materials: galvanized sheet
焊接烟尘收集装置,焊接废气收集设备吸风和排风管道:
Welding smoke and dust collection device, welding exhaust gas collection equipment suction and exhaust pipes:
镀锌管状风管结构,全套包括直管、支管、弯头、连接件、管箍、螺丝、密封及管道支撑固定材料;
Galvanized tubular air duct structure, complete set including straight pipes, branch pipes, elbows, connectors, pipe clamps, screws, sealing and pipe support fixing materials;
焊接烟尘收集装置,焊接废气收集设备滤筒除尘器是一种干式除尘装置,它适用于捕集细小、干燥非纤维性粉尘。滤筒采用纺织的滤布或非纺织的毡制成,利用纤维织物的过滤作用对含尘气体进行过滤,当含尘气体进入滤筒除尘器,颗粒大、比重大的粉尘,由于重力的作用沉降下来落入灰斗,含有细小粉尘的气体在通过滤料时,粉尘被阻留,使气体得到净化。
Welding smoke and dust collection device, welding exhaust gas collection device filter cartridge dust collector is a dry dust removal device, which is suitable for capturing small, dry non fibrous dust. The filter cartridge is made of textile filter cloth or non-woven felt, and uses the filtering effect of fiber fabric to filter the dusty gas. When the dusty gas enters the filter cartridge dust collector, the large and heavy particles of dust settle down and fall into the ash hopper due to gravity. When the gas containing fine dust passes through the filter material, the dust is blocked and the gas is purified.
滤筒除尘器除尘原理
Dust removal principle of filter cartridge dust collector
含尘气体由进风口进入除尘器箱体内,细小尘粒由于滤筒的多种效应作用,被阻止在滤筒外壁。净化后的气体通过滤筒经箱体出风口排出。随着使用时间的增长,滤筒表面吸附的粉尘逐渐增多,滤筒的透气性减弱,除尘器阻力不断增大。为了保证除尘器的阻力控制在限定的范围之内,由脉冲控制仪发出信号,循序打开脉冲电磁阀,使气罐 内的压缩空气由喷吹管各喷口喷射到对应滤筒,造成滤筒内瞬间气体膨胀,使积聚在滤袋外壁上的粉尘抖落,进入灰斗。
Dust containing gas enters the dust collector box through the air inlet, and small dust particles are blocked on the outer wall of the filter cartridge due to various effects of the filter cartridge. The purified gas is discharged through the outlet of the box through the filter cartridge. As the usage time increases, the amount of dust adsorbed on the surface of the filter cartridge gradually increases, the permeability of the filter cartridge weakens, and the resistance of the dust collector continues to increase. In order to ensure that the resistance of the dust collector is controlled within a limited range, a pulse control instrument sends a signal and sequentially opens the pulse solenoid valve, so that the compressed air in the gas tank is sprayed from each nozzle of the blowing pipe to the corresponding filter cartridge, causing instantaneous gas expansion inside the filter cartridge, causing the dust accumulated on the outer wall of the filter bag to shake off and enter the ash hopper.
滤筒除尘器工艺结构
Process structure of filter cartridge dust collector
滤筒除尘器结构主要由上部箱体、中部箱体、下部箱体(灰斗)、清灰系统和排灰机构等部分组成。布袋除尘器性能的好环,除了正确选择滤袋材料外,清灰系统对滤筒除尘器起着决定性的作用。
The structure of the filter cartridge dust collector mainly consists of upper box, middle box, lower box (ash hopper), ash cleaning system, and ash discharge mechanism. The performance of a bag filter is not only determined by the correct selection of filter bag materials, but also by the decisive role of the cleaning system in the filter cartridge dust collector.
滤筒除尘器采用垂直式滤筒结构,便于粉尘吸附及清灰;且由于在清灰时滤料的抖动较小,使滤筒的寿命大大高于滤袋,维修费用低。采用目前国际上先进的离线三状态(过滤、清灰、静止)清灰方式,避免了清灰时的“再吸附”现象,使清灰彻底可靠。设计有预收尘机构,不但克服了粉尘直接冲刷容易磨损滤筒的缺点,而且可以大大提高除尘器入口处的粉尘浓度。对影响主要性能的关键元件(如脉冲阀)采用进口件,其易损件膜片的使用寿命超过100万次。采用分列喷吹清灰技术,一个脉冲阀可同时喷吹一列,可大大地减少脉冲阀的数量。脉冲阀三状态清灰机构采用PLC自动控制,并兼有定时或手动二种控制方式任选。单位过滤面积占用的三维空间小,可替用户节约大量空间资源,间接减少用户的一次性投资成本。使用寿命长,滤筒的使用寿命可达1~3年,大大地减少了除尘器更换滤芯的次数,维护简单,大大降低了用户在使用过程中的维护成本。
The filter cartridge dust collector adopts a vertical filter cartridge structure, which is convenient for dust adsorption and cleaning; And due to the small shaking of the filter material during ash cleaning, the service life of the filter cartridge is much longer than that of the filter bag, resulting in low maintenance costs. Adopting the currently advanced offline three-state (filtering, cleaning, and static) cleaning method internationally, it avoids the phenomenon of "re adsorption" during cleaning and ensures complete and reliable cleaning. Designed with a pre dust collection mechanism, it not only overcomes the disadvantage of direct dust erosion and easy wear of the filter cartridge, but also greatly improves the dust concentration at the inlet of the dust collector. The key components that affect the main performance (such as pulse valves) are imported, and the service life of the vulnerable part diaphragm exceeds 1 million times. By using the split jet cleaning technology, one pulse valve can simultaneously spray one column, greatly reducing the number of pulse valves. The pulse valve three state ash cleaning mechanism adopts PLC automatic control, and there are two control modes available: timed or manual. The unit filtering area occupies a small three-dimensional space, which can save users a lot of space resources and indirectly reduce their one-time investment costs. Long service life, the service life of the filter cartridge can reach 1-3 years, greatly reducing the frequency of replacing the filter element of the dust collector, simple maintenance, and greatly reducing the maintenance cost for users during use.
脉冲滤筒除尘器应用得广泛,固定滤袋用的多孔板(花板)设在除尘器箱体的上部,在每排滤袋的上方有一喷吹管,喷吹管上对着每一滤袋的中心开一压气喷射孔(嘴),喷吹管的另一端与脉冲阀、控制阀等组成的脉冲控制系统及压缩空气储气罐相连接,根据规定的时间或阻力值,按自动控制程序进行脉冲喷吹清灰。滤袋通常采用外率式,里面含有骨架作为支撑,粉尘被捕集而沉降在布袋的外表面。清灰时的一瞬间,当高速喷射气流通过滤袋_时,能诱导几倍于喷射气量的空气,一起吹向滤袋内部,形成空气波,使滤袋由上向下产生急剧的膨胀和冲击振动,产生很强的清落粉尘的作用。脉冲周期可以调整,一般为1分钟到几分钟。
Pulse filter cartridge dust collectors are widely used. The porous plate (flower plate) used to fix the filter bag is located at the upper part of the dust collector box, and there is a spray pipe above each row of filter bags. A compressed air injection hole (nozzle) is opened on the spray pipe towards the center of each filter bag. The other end of the spray pipe is connected to a pulse control system composed of pulse valves, control valves, etc. and a compressed air storage tank. According to the specified time or resistance value, pulse spray cleaning is carried out according to the automatic control program. Filter bags are usually of an external rate type, containing a skeleton as support, and dust is captured and settled on the outer surface of the cloth bag. At the moment of dust removal, when the high-speed jet airflow passes through the filter bag, it can induce several times the amount of air sprayed and blow into the inside of the filter bag together, forming air waves, causing the filter bag to rapidly expand and vibrate from top to bottom, producing a strong effect on dust removal. The pulse period can be adjusted, usually from 1 minute to a few minutes.
(1)工作原理:
(1) Working principle:
含尘气流由下部风口进入气箱,通过导流挡板将气流均匀分配至过滤元件,在过滤元件的作用下,烟尘被吸附在过滤元件的表面,洁净的气体通过出口管道排出,脉冲阀在控制仪的控制下,对过滤元件进行轮流清灰;由于过滤零件采用垂直安装方式,可以保证良好的清灰效果。
The dusty airflow enters the air box from the lower air outlet and is evenly distributed to the filtering element through a guide baffle. Under the action of the filtering element, smoke and dust are adsorbed on the surface of the filtering element, and clean gas is discharged through the outlet pipeline. Under the control of the control instrument, the pulse valve alternately cleans the filtering element; Due to the vertical installation method of the filtering components, good dust removal effect can be ensured.
净化器滤材的清洁通过由脉冲控制仪控制的喷吹装置实现:
The cleaning of the purifier filter material is achieved through a spray device controlled by a pulse controller:
当净化器运行一段时间以后,细微的烟尘吸附在滤材表面,使得滤材的透气性降低。每隔一定时间由脉冲控制仪发出信号,控制电磁阀,洁净的压缩空气由阀口喷出;滤材表面吸附的微尘在气流作用下被清除,落在室体下部的集尘斗中。脉冲喷吹需0.4~0.6MPa的洁净压缩空气,且运行中须保持连续且恒定不变的供气量。
After the purifier runs for a period of time, fine smoke and dust adsorb on the surface of the filter material, reducing its breathability. At regular intervals, the pulse controller sends out signals to control the solenoid valve, and clean compressed air is sprayed out from the valve port; The fine dust adsorbed on the surface of the filter material is removed by the airflow and falls into the dust collection hopper at the bottom of the chamber. Pulse injection requires clean compressed air of 0.4-0.6 MPa and a continuous and constant gas supply during operation.
该型号的滤筒除尘器性能特点:
The performance characteristics of the filter cartridge dust collector of this model:
1.滤料折褶使用,布置密度大,除尘器结构紧凑,体积小,滤料韧性大。
1. The filter material is folded and used with high density, compact dust collector structure, small volume, and high toughness of the filter material.
2.滤筒高度小,安装方便,使用维修工作量小。
2. The filter cartridge is small in height, easy to install, and requires minimal maintenance work.
3.同体积除尘器过滤面积相对较大,过滤风速较小,阻力不大。
3. The same volume dust collector has a relatively large filtration area, low filtration wind speed, and low resistance.
4.滤料折褶两端密封严格,不漏气,密封效果好。
4. The two ends of the folded filter material are tightly sealed, without air leakage, and the sealing effect is good.
(2)滤材介绍:
(2) Introduction to filter materials:
该处理系统采用的滤芯为焊烟专用滤芯,为聚四氟乙烯(PTFE)聚酯滤材,该滤材是一种高科技产品,它的微孔结构可在特殊条件下经机械拉伸得到,而丝毫未改变其原有特性。微孔径可控制在0.2-0.3μm,过滤方法属于表面过滤。膜表面光滑又具备极佳的化学稳定性,能抗腐蚀,耐酸碱、不老化又憎水性。在过滤时膜表面截留的烟尘很容易剥落,其通气量能长期保持在同一水平上。由于覆膜滤材是用其光滑不粘的表面截留烟尘,利用这一特性不仅可以节约脉冲清灰系统的压缩空气量,又可避免烟尘对薄膜基布的磨损,延长了滤筒的使用寿命,同时为设备提供最低而平稳的压降差。覆膜式滤筒面积大、体积小、降低能量损耗,加大其流量,延长免保养时间,高效覆膜聚酯滤筒是焊接烟尘收集系统的最佳选择。
The filter element used in this processing system is a welding smoke special filter element, made of polytetrafluoroethylene (PTFE) polyester filter material. This filter material is a high-tech product, and its microporous structure can be obtained through mechanical stretching under special conditions without changing its original characteristics. The micropore diameter can be controlled between 0.2-0.3 μ m. The filtration method belongs to surface filtration. The surface of the membrane is smooth and has excellent chemical stability, which can resist corrosion, acid and alkali, is not aging, and is hydrophobic. The smoke and dust trapped on the membrane surface during filtration are easily peeled off, and its ventilation capacity can be maintained at the same level for a long time. Due to the use of its smooth and non stick surface to retain smoke and dust, the use of this characteristic in membrane filter materials can not only save the compressed air volume of pulse cleaning systems, but also avoid the wear of the film substrate caused by smoke and dust, extend the service life of the filter cartridge, and provide the equipment with the lowest and most stable pressure drop. The membrane covered polyester filter cartridge has a large area, small volume, reduces energy loss, increases its flow rate, prolongs maintenance free time, and is the best choice for welding smoke and dust collection systems with high efficiency.
采用PTFE滤料制成的特制滤筒(聚酯+覆膜),同时具有膜过滤和刚性机体过滤的特点。
A specially designed filter cartridge (polyester+membrane) made of PTFE filter material, which has the characteristics of both membrane filtration and rigid body filtration.
坚固的刚性过滤体能承受较高的工作压力,不需任何骨架支撑,并承受一定的机械冲击力,反吹时滤筒不变形。由于除尘器面板采用螺栓紧固易于拆装,滤筒采用三耳吊装,因此安装和更换滤筒极为方便。滤筒过滤器具有以下特点:
The sturdy and rigid filter body can withstand high working pressure without any skeleton support, and can withstand certain mechanical impact forces. The filter cartridge does not deform during reverse blowing. Due to the fact that the dust collector panel is fastened with bolts and easy to disassemble, and the filter cartridge is lifted with three ears, installation and replacement of the filter cartridge are extremely convenient. The filter cartridge filter has the following characteristics:
①烟尘捕集效率高:过滤元件的除尘效率是由其本身特有的结构和涂层来实现的,适用于极细和特殊烟尘,通常对0.3μm以上超细烟尘的除尘效率可达到99.5%。由于焊接、切割烟尘颗粒直径大部分在0.2μm以上,因此特别适合金属焊接、切割烟尘的净化过滤。
① High smoke and dust capture efficiency: The dust removal efficiency of the filter element is achieved by its unique structure and coating, suitable for extremely fine and special smoke and dust, usually up to 0.3 μ The dust removal efficiency of ultra-fine smoke and dust above m can reach 99.5%. Due to welding and cutting, the diameter of smoke particles is mostly 0.2 μ Above m, therefore it is particularly suitable for purifying and filtering metal welding and cutting smoke and dust.
②阻力损失稳定:由于滤筒是通过表面的PTFE涂层对烟尘进行捕捉的,其光滑的表面使烟尘很难透过与停留,过滤筒母体层中不会发生堵塞现象,阻力损失仅与过滤风速有关。
② Stable resistance loss: Due to the fact that the filter cartridge captures smoke and dust through a PTFE coating on its surface, its smooth surface makes it difficult for smoke and dust to pass through and stay. There is no blockage phenomenon in the mother layer of the filter cartridge, and the resistance loss is only related to the filtering wind speed.
③采用PTFE滤料制成的特制滤筒(聚酯+覆膜),具有阻燃的作用。
③ A specially made filter cartridge made of PTFE filter material (polyester+coated) has a flame retardant effect.
④清灰效果好:滤筒的刚性结构,使得脉冲反吹气流向空隙喷出时,滤筒无变形,表层粘附的烟尘,在瞬间即可被除去。
④ Good dust removal effect: The rigid structure of the filter cartridge allows for no deformation of the filter cartridge when the pulse back blowing air flows towards the gap, and the adhered smoke and dust on the surface can be instantly removed.
⑤使用寿命可达1~2年,大大减少了更换滤芯的次数;滤筒的无故障运行时间长,不需要经常的维护与保养。
⑤ The service life can reach 1-2 years, greatly reducing the frequency of replacing the filter element; The fault free operation time of the filter cartridge is long and does not require frequent maintenance and upkeep.
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