工业除尘滤芯
除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)的类型有:聚(ju)酯纤维除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、长纤维聚(ju)酯除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、覆膜除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、焊接烟(yan)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、脉冲褶式长滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、大风量(liang)除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、高(gao)精度除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、耐高(gao)温(wen)除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、耐阻燃除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、打砂抛丸(wan)除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、空调除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)、吸(xi)(xi)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)器除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)芯等(deng)等(deng),产品应用于钢铁、石化、电力、造(zao)船、航空、集装(zhuang)箱(xiang)、橡胶、机械制造(zao)、陶瓷(ci)、木材加工(gong)(gong)(gong)、汽车、有色金(jin)属、矿业等(deng)。除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)具有耐酸、耐高(gao)温(wen)、耐压、吸(xi)(xi)附(fu)性好、防(fang)油防(fang)水等(deng)特(te)点(dian),可根据(ju)需要加工(gong)(gong)(gong)制作(zuo)。除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)(tong)(tong)的种类有哪(na)些?工(gong)(gong)(gong)业除(chu)(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)芯
除尘滤筒除尘(chen)(chen)器滤(lv)(lv)(lv)筒(tong)(tong)(tong)和滤(lv)(lv)(lv)袋(dai)是除尘(chen)(chen)器应用(yong)的两(liang)种(zhong)过(guo)(guo)(guo)滤(lv)(lv)(lv)方式(shi),滤(lv)(lv)(lv)筒(tong)(tong)(tong)和滤(lv)(lv)(lv)袋(dai)都(dou)有各自的优势,滤(lv)(lv)(lv)袋(dai)更换(huan)成本相(xiang)对较低,同(tong)(tong)样(yang)在高(gao)温领域使用(yong)滤(lv)(lv)(lv)袋(dai)的成本要(yao)比(bi)滤(lv)(lv)(lv)筒(tong)(tong)(tong)低得多(duo),但(dan)滤(lv)(lv)(lv)袋(dai)同(tong)(tong)样(yang)有它(ta)的缺点,过(guo)(guo)(guo)滤(lv)(lv)(lv)面积(ji)和过(guo)(guo)(guo)滤(lv)(lv)(lv)精度(du)(du)较低。相(xiang)比(bi)来(lai)说,滤(lv)(lv)(lv)筒(tong)(tong)(tong)的过(guo)(guo)(guo)滤(lv)(lv)(lv)面积(ji)和处理风量要(yao)比(bi)相(xiang)同(tong)(tong)尺寸(cun)的滤(lv)(lv)(lv)袋(dai)大3倍,同(tong)(tong)样(yang)滤(lv)(lv)(lv)筒(tong)(tong)(tong)的过(guo)(guo)(guo)滤(lv)(lv)(lv)精度(du)(du)和过(guo)(guo)(guo)滤(lv)(lv)(lv)效(xiao)率(lv)要(yao)高(gao)于(yu)滤(lv)(lv)(lv)袋(dai),滤(lv)(lv)(lv)筒(tong)(tong)(tong)可以(yi)选择更多(duo)的安装(zhuang)方式(shi),安装(zhuang)更换(huan)更为便捷,可以(yi)为除尘(chen)(chen)器提供更多(duo)的设计方案。但(dan)由于(yu)滤(lv)(lv)(lv)筒(tong)(tong)(tong)和滤(lv)(lv)(lv)袋(dai)的结构不同(tong)(tong),滤(lv)(lv)(lv)袋(dai)清灰(hui)更加彻底。山东锥形除尘(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)除尘(chen)(chen)滤(lv)(lv)(lv)筒(tong)(tong)(tong)的过(guo)(guo)(guo)滤(lv)(lv)(lv)效(xiao)率(lv)如何?
覆(fu)(fu)膜(mo)聚酯(zhi)无纺(fang)布(bu)除(chu)(chu)(chu)尘(chen)(chen)(chen)滤(lv)(lv)(lv)(lv)(lv)筒(tong)(tong):采(cai)用(yong)PTFE覆(fu)(fu)膜(mo)聚酯(zhi)滤(lv)(lv)(lv)(lv)(lv)料(liao),该材(cai)料(liao)制作(zuo)滤(lv)(lv)(lv)(lv)(lv)筒(tong)(tong)使(shi)用(yong)寿(shou)命长,过(guo)滤(lv)(lv)(lv)(lv)(lv)精(jing)度(du)高(gao),反(fan)吹清灰(hui)更(geng)容易,一(yi)般工(gong)况(kuang)条件下可达(da)1-2年。适(shi)用(yong)范(fan)围:焊接除(chu)(chu)(chu)尘(chen)(chen)(chen)、喷丸制造、制药、水泥、纺(fang)织工(gong)业等行(xing)业的过(guo)滤(lv)(lv)(lv)(lv)(lv)。防静(jing)电(dian)(dian)聚酯(zhi)无纺(fang)布(bu)除(chu)(chu)(chu)尘(chen)(chen)(chen)滤(lv)(lv)(lv)(lv)(lv)筒(tong)(tong):防静(jing)电(dian)(dian),即抗击静(jing)电(dian)(dian)膜(mo)处(chu)理,是在滤(lv)(lv)(lv)(lv)(lv)材(cai)表(biao)面覆(fu)(fu)盖(gai)一(yi)层(ceng)极薄导(dao)电(dian)(dian)透气的金属铝(lv)涂(tu)层(ceng),避(bi)免静(jing)电(dian)(dian)跳(tiao)火(huo),适(shi)用(yong)于金属粉尘(chen)(chen)(chen)过(guo)滤(lv)(lv)(lv)(lv)(lv)、防爆工(gong)况(kuang)除(chu)(chu)(chu)尘(chen)(chen)(chen)。防油防水聚酯(zhi)无纺(fang)布(bu)除(chu)(chu)(chu)尘(chen)(chen)(chen)滤(lv)(lv)(lv)(lv)(lv)筒(tong)(tong):防油、防水、防尘(chen)(chen)(chen)处(chu)理是在滤(lv)(lv)(lv)(lv)(lv)材(cai)纤维上覆(fu)(fu)盖(gai)一(yi)层(ceng)氟树脂,使(shi)滤(lv)(lv)(lv)(lv)(lv)材(cai)具有抗油及抗污功能(neng),粉尘(chen)(chen)(chen)不(bu)易粘(zhan)附,反(fan)吹清灰(hui)更(geng)容易,适(shi)用(yong)于潮湿或含油脂,粉尘(chen)(chen)(chen)浓度(du)大的环境。木浆纤维复合滤(lv)(lv)(lv)(lv)(lv)纸除(chu)(chu)(chu)尘(chen)(chen)(chen)滤(lv)(lv)(lv)(lv)(lv)筒(tong)(tong):适(shi)用(yong)于燃气轮机(ji)、压塑机(ji)、喷砂(sha)、煤(mei)灰(hui)尘(chen)(chen)(chen)、漂尘(chen)(chen)(chen)等行(xing)业的过(guo)滤(lv)(lv)(lv)(lv)(lv)。
褶(zhe)(zhe)折式(shi)(shi)(shi)滤(lv)(lv)筒(tong)与传统(tong)袋(dai)(dai)式(shi)(shi)(shi)除尘器的(de)(de)性能比较:一(yi)(yi)体(ti)化设计(ji),省(sheng)去了笼(long)架安(an)(an)装(zhuang)(zhuang)(zhuang)步骤,比传统(tong)滤(lv)(lv)袋(dai)(dai)易(yi)安(an)(an)装(zhuang)(zhuang)(zhuang),节省(sheng)了现(xian)场停(ting)机时间。褶(zhe)(zhe)式(shi)(shi)(shi)表(biao)面设计(ji),可在小的(de)(de)空间中提供过滤(lv)(lv)面积。宽(kuan)褶(zhe)(zhe)设计(ji),褶(zhe)(zhe)深(shen)较浅(qian),清(qing)灰脉冲(chong)(chong)气压(ya)要求(qiu)较低,节省(sheng)压(ya)缩空气。滤(lv)(lv)筒(tong)的(de)(de)底部加强设计(ji),减少磨损破漏。可缓解气流(liu)对传统(tong)滤(lv)(lv)袋(dai)(dai)底部冲(chong)(chong)刷造成的(de)(de)破损。拆(chai)装(zhuang)(zhuang)(zhuang)的(de)(de)优势(shi),过滤(lv)(lv)元件短而少,易(yi)安(an)(an)装(zhuang)(zhuang)(zhuang)(顶部装(zhuang)(zhuang)(zhuang)入),易(yi)检修和更(geng)换。常(chang)规的(de)(de)滤(lv)(lv)袋(dai)(dai)在更(geng)换时,需要先拆(chai)袋(dai)(dai)笼(long),再拆(chai)滤(lv)(lv)袋(dai)(dai);安(an)(an)装(zhuang)(zhuang)(zhuang)时需要先安(an)(an)装(zhuang)(zhuang)(zhuang)滤(lv)(lv)袋(dai)(dai),再安(an)(an)装(zhuang)(zhuang)(zhuang)袋(dai)(dai)笼(long)。褶(zhe)(zhe)式(shi)(shi)(shi)滤(lv)(lv)筒(tong)由于一(yi)(yi)体(ti)式(shi)(shi)(shi)的(de)(de)结构,拆(chai)装(zhuang)(zhuang)(zhuang)和安(an)(an)装(zhuang)(zhuang)(zhuang)需一(yi)(yi)次即可。除尘滤(lv)(lv)筒(tong)的(de)(de)端盖掉了是什么原因?
除(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)(lv)(lv)筒常见的(de)(de)(de)清(qing)(qing)(qing)(qing)灰(hui)(hui)方式有气体(ti)清(qing)(qing)(qing)(qing)灰(hui)(hui):气体(ti)清(qing)(qing)(qing)(qing)灰(hui)(hui)是(shi)凭借(jie)髙压气体(ti)或外界空气反吹风滤(lv)(lv)(lv)(lv)(lv)袋(dai)(dai)(dai)(dai),以(yi)消除(chu)(chu)(chu)滤(lv)(lv)(lv)(lv)(lv)袋(dai)(dai)(dai)(dai)上(shang)的(de)(de)(de)积(ji)(ji)尘(chen)(chen)(chen)(chen)。气体(ti)清(qing)(qing)(qing)(qing)灰(hui)(hui)包含(han)单脉冲煤气发生炉清(qing)(qing)(qing)(qing)灰(hui)(hui)、反吹风机清(qing)(qing)(qing)(qing)灰(hui)(hui)和反进风清(qing)(qing)(qing)(qing)灰(hui)(hui)。机械(xie)设备(bei)振(zhen)(zhen)打(da)清(qing)(qing)(qing)(qing)灰(hui)(hui):分顶端振(zhen)(zhen)打(da)清(qing)(qing)(qing)(qing)灰(hui)(hui)和中间(jian)振(zhen)(zhen)打(da)清(qing)(qing)(qing)(qing)灰(hui)(hui)(均对滤(lv)(lv)(lv)(lv)(lv)袋(dai)(dai)(dai)(dai)来讲(jiang)),是(shi)凭借(jie)机械(xie)设备(bei)振(zhen)(zhen)打(da)设备(bei)周期性的(de)(de)(de)轮着振(zhen)(zhen)打(da)各排滤(lv)(lv)(lv)(lv)(lv)袋(dai)(dai)(dai)(dai),以(yi)消除(chu)(chu)(chu)滤(lv)(lv)(lv)(lv)(lv)袋(dai)(dai)(dai)(dai)上(shang)的(de)(de)(de)积(ji)(ji)尘(chen)(chen)(chen)(chen)。人力(li)敲击:是(shi)用人力(li)敲打(da)每一个滤(lv)(lv)(lv)(lv)(lv)袋(dai)(dai)(dai)(dai),以(yi)消除(chu)(chu)(chu)滤(lv)(lv)(lv)(lv)(lv)袋(dai)(dai)(dai)(dai)上(shang)的(de)(de)(de)积(ji)(ji)尘(chen)(chen)(chen)(chen)。滤(lv)(lv)(lv)(lv)(lv)袋(dai)(dai)(dai)(dai)是(shi)布袋(dai)(dai)(dai)(dai)除(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)器(qi)运作过(guo)程中的(de)(de)(de)一部分,一般圆桶型滤(lv)(lv)(lv)(lv)(lv)袋(dai)(dai)(dai)(dai)竖直地悬(xuan)架在布袋(dai)(dai)(dai)(dai)除(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)器(qi)中。怎么选择除(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)(lv)(lv)筒的(de)(de)(de)厂家?江西卡盘除(chu)(chu)(chu)尘(chen)(chen)(chen)(chen)滤(lv)(lv)(lv)(lv)(lv)筒
除(chu)尘滤筒的更换方法(fa)是什么?工(gong)业除(chu)尘滤芯
滤(lv)(lv)筒(tong)除尘(chen)(chen)(chen)器(qi)(qi)是(shi)(shi)一种干式除尘(chen)(chen)(chen)设备,使(shi)用(yong)滤(lv)(lv)筒(tong)作(zuo)为过滤(lv)(lv)元(yuan)件,将微粉(fen)尘(chen)(chen)(chen)从气(qi)流中分离出来,滤(lv)(lv)筒(tong)是(shi)(shi)整个设备的(de)(de)关(guan)键部位,它(ta)直接影响除尘(chen)(chen)(chen)效率。除尘(chen)(chen)(chen)滤(lv)(lv)筒(tong)常用(yong)的(de)(de)自动(dong)清灰方式有高压(ya)气(qi)体(ti)脉冲反吹(chui)、机械振动(dong)。脉冲反吹(chui)是(shi)(shi)利(li)用(yong)控制(zhi)仪预先(xian)设定的(de)(de)参数给电磁阀(fa)一个信号(hao),瞬间开闭电磁阀(fa)膜片,使(shi)高压(ya)气(qi)体(ti)进入喷(pen)吹(chui)管(guan),利(li)用(yong)气(qi)体(ti)的(de)(de)急速膨胀力抖(dou)落除尘(chen)(chen)(chen)滤(lv)(lv)筒(tong)表面的(de)(de)灰尘(chen)(chen)(chen)。机械振动(dong)清灰常用(yong)于(yu)小型单机滤(lv)(lv)筒(tong)除尘(chen)(chen)(chen)器(qi)(qi),它(ta)是(shi)(shi)利(li)用(yong)除尘(chen)(chen)(chen)器(qi)(qi)花板上偏心装置产(chan)生的(de)(de)抖(dou)动(dong)力来清灰,这(zhei)个动(dong)作(zuo)需(xu)要停机后操(cao)作(zuo)。工业除尘(chen)(chen)(chen)滤(lv)(lv)芯
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陕西刚性自防水(shui)出(chu)厂价
目前,我国(guo)在刚(gang)性防水体系标(biao)(biao)准(zhun)建设方(fang)(fang)面(mian)发(fa)展很快,不(bu)但制定了大(da)量的专(zhuan)项标(biao)(biao)准(zhun)和(he)(he)图集方(fang)(fang)面(mian),在通用(yong)型标(biao)(biao)准(zhun)方(fang)(fang)面(mian)也发(fa)展很快,逐步构建了国(guo)家标(biao)(biao)准(zhun)、行业标(biao)(biao)准(zhun)、地方(fang)(fang)标(biao)(biao)准(zhun)和(he)(he)团体标(biao)(biao)准(zhun)各层级全(quan)方(fang)(fang)面(mian)的标(biao)(biao)准(zhun)体系,目前关(guan)于刚(gang)性防水体 。
在进行(xing)工商注册时(shi),企(qi)业(ye)需要注意以(yi)下几(ji)个事项(xiang)。首先,企(qi)业(ye)应选择合适(shi)的企(qi)业(ye)名称,避免(mian)与(yu)已有(you)企(qi)业(ye)重名或违反法律(lv)规(gui)定。其次,企(qi)业(ye)应准确填写经营(ying)范围,确保与(yu)实际经营(ying)活(huo)动相符,避免(mian)违规(gui)经营(ying)。第三,企(qi)业(ye)应真(zhen)实反映(ying)注 。
无锡博(bo)航品(pin)牌(pai)(pai)(pai)管理有(you)限公司旗下连(lian)锁茶饮(yin)(yin)品(pin)牌(pai)(pai)(pai)。主打(da)“现煮谷饮(yin)(yin)”及“时尚果饮(yin)(yin)”两个(ge)系列饮(yin)(yin)品(pin)。以健康(kang),时尚为卖点(dian),目前开放全国合(he)作。团队励志(zhi)将嗳(ai)咪(mi)悠打(da)造成(cheng)全国的(de)健康(kang)茶饮(yin)(yin)品(pin)牌(pai)(pai)(pai)。嗳(ai)咪(mi)悠奶茶随(sui)着生活水平的(de)不断提(ti)高(gao), 。
针对水(shui)泵(beng)积灰或缺乏润滑(hua)的(de)问题(ti),还(hai)可以采取其他一些措施。例如(ru),可以优化(hua)设备管理流程,定(ding)期对水(shui)泵(beng)进行维(wei)护(hu)保养,防止问题(ti)的(de)发生。同(tong)时,可以加强员工的(de)培训,提高他们对水(shui)泵(beng)的(de)认(ren)知和维(wei)护(hu)能力(li)。在实际应用中,可以结(jie) 。
随着新零售(shou)(shou)概念的兴起(qi),商(shang)(shang)业(ye) POS 机(ji)与新零售(shou)(shou)的结合越来越紧密。传统的商(shang)(shang)业(ye) POS 机(ji)主要(yao)用(yong)于(yu)零售(shou)(shou)门(men)店的收银结算,但随着消(xiao)费者对便捷、快速、个性化(hua)的购物体验需(xu)求的增加,商(shang)(shang)业(ye) POS 机(ji)也在(zai)不断升级和(he)创 。
为什么会出现OEM代加工(gong)(gong)呢(ni)?品牌(pai)商(shang)没有生产力,生产是(shi)要(yao)(yao)有厂房、机械、工(gong)(gong)人(ren)。投(tou)资(zi)一家工(gong)(gong)厂也要(yao)(yao)大量资(zi)金投(tou)入,浪费(fei)大量的资(zi)金投(tou)入工(gong)(gong)厂还不如(ru)用来做产品广告(gao)宣传。品牌(pai)商(shang)可(ke)以根据(ju)市场变化而灵活下(xia)(xia)单,有多少就(jiu)下(xia)(xia)单多 。
适用工作温度为(wei)正负40度,因此,摆线针(zhen)轮减速机受到用户的普(pu)遍欢迎并在(zai)各个行业和领域(yu)被的使用。另注:所用图(tu)片为(wei)参考图(tu)片,请(qing)以实物为(wei)准。、XLD0、XL1、XLD1、XL2、XLD2、XL3、XLD3、X 。
无锡博航品牌管(guan)理有(you)限公司旗下连锁(suo)茶(cha)饮(yin)品牌。主打“现煮谷饮(yin)”及“时尚(shang)果饮(yin)”两个系列饮(yin)品。以健康,时尚(shang)为卖(mai)点(dian),目前开放全国合作。团队励志(zhi)将(jiang)嗳咪(mi)悠(you)打造成(cheng)全国的健康茶(cha)饮(yin)品牌。嗳咪(mi)悠(you)奶茶(cha)随着生活水平的不断(duan)提高, 。
高压电工作(zuo)业(ye)(ye)不仅对(dui)技术要求严(yan)格,对(dui)安(an)(an)(an)全规范也(ye)有着严(yan)格的(de)要求。他们需(xu)要在(zai)进(jin)行(xing)任何(he)操(cao)(cao)作(zuo)以及任何(he)作(zuo)业(ye)(ye)之前(qian)制定详细的(de)安(an)(an)(an)全措(cuo)施和(he)操(cao)(cao)作(zuo)计划(hua),并确保(bao)所(suo)(suo)有的(de)操(cao)(cao)作(zuo)都符(fu)合国(guo)家和(he)行(xing)业(ye)(ye)标准。在(zai)操(cao)(cao)作(zuo)过程中,他们需(xu)要遵守所(suo)(suo)有的(de)安(an)(an)(an) 。
我(wo)们(men)将进行严(yan)格的(de)检测和维(wei)修,确保(bao)(bao)其性能(neng)和可靠性得到比(bi)较大(da)程度的(de)保(bao)(bao)障。同时,我(wo)们(men)还提(ti)供周到的(de)售(shou)前咨询和售(shou)后服务(wu),帮助企业(ye)解决一(yi)切关(guan)于(yu)(yu)二手(shou)机(ji)械设(she)备回收的(de)问题。五、结语二手(shou)机(ji)械设(she)备回收不仅有利于(yu)(yu)环(huan)保(bao)(bao),还有助 。
膜结构(gou)(gou)(gou)建筑形(xing)式(shi)主要有(you)以(yi)(yi)下几种:骨架(jia)式(shi)膜结构(gou)(gou)(gou):以(yi)(yi)钢构(gou)(gou)(gou)或是集成材构(gou)(gou)(gou)成屋顶(ding)骨架(jia),在其上方采用(yong)张拉膜材的构(gou)(gou)(gou)造(zao)(zao)形(xing)式(shi),下部支撑结构(gou)(gou)(gou)安定性高(gao)。因骨架(jia)式(shi)膜结构(gou)(gou)(gou)具有(you)屋顶(ding)造(zao)(zao)型(xing)比较(jiao)简单、开口部不易受限制(zhi)且经(jing)济效益高(gao)等特点, 。