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<meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u 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href="http://www.cdcfah.com/cp/first-_aqfh/">安全、防護(hù)</a>?<a href="http://www.cdcfah.com/cp/second-aqfh_zyfhtv/">作業(yè)防護(hù)</a>?<a href="http://www.cdcfah.com/cp/third-zyfhtv_fhmzmj/">防護(hù)面罩面具</a>?四川學(xué)生防毒面具中山市賽夫特勞保用品供應(yīng)</p><div id="l3acjlc" class="leftbox clearfix"><h1>四川學(xué)生防毒面具中山市賽夫特勞保用品供應(yīng)</h1><div id="q3pwiza" class="proBig"><div id="e7cjl8b" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/saifutelaobao/637356917296162110/8159038.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="tfqcyxc" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/saifutelaobao/637356917296162110/8159038.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tsj39nw" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>四川學(xué)生防毒面具,防毒面具</p><p><span>***更新：</span>2020-09-19 05:15:15</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="uik7c8o" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">中山市賽夫特勞保用品有限公司</a></p><p><span>聯(lián)系人：</span>陳小姐</p><p><span>郵箱: </span>ke.galabao@163.com</p><p><span>電話: </span>18124983196</p><p><span>傳真: </span>0760_86513681</p><p><span>網(wǎng)址: </span>http://saifutelaobao.shop.88360.com</p><p><span>手機(jī): </span>0760-86513681</p><p><span>地址: </span>中山市南區(qū)西環(huán)四路7號1-3樓、4樓之二(住所申報）;增設(shè)3處經(jīng)營場所,具體為:1、中山市南區(qū)西環(huán)四路四號一、二樓;2、中山市南區(qū)西環(huán)四路10號三樓;3、中山市南區(qū)西環(huán)四路10號首層之二 </p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="o8h2p9o" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="wkhyfb2" class="box"><p><p style="text-indent:25px">長管呼吸器的結(jié)構(gòu)是，使用者頭戴防毒面具，然后面具上接一根長管，管長可以根據(jù)使用具**置與干凈氣源的距離來制定，它較大的優(yōu)勢就是佩戴輕便，且使用時間不受限制，四川學(xué)生防毒面具，而缺點(diǎn)在于局限性，因?yàn)楣荛L不可能無限制的加長。空氣呼吸器恰好相反，它的優(yōu)勢在于不受環(huán)境位置的影響，更加靈活，四川學(xué)生防毒面具，四川學(xué)生防毒面具，但是由于自帶的氣體比較重，所以使用者背負(fù)有一定的壓力，且氣瓶的壓縮空氣一般使用時間在45分鐘左右，使用時間受限制。在選用具體的防毒面具類型時，一定要依具體環(huán)境來選擇長管呼吸器或者空氣呼吸器，同時訂購呼吸防護(hù)用品以后，一定按產(chǎn)品說明操作，并且正確保管做好日常點(diǎn)檢和維護(hù)等工作。防毒面具的防毒時間同選定濾毒罐的性能。四川學(xué)生防毒面具</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川學(xué)生防毒面具,防毒面具" src="https://tyunfile.71360.com/UploadFile/saifutelaobao/637356917296162110/8159038.png"></div><p style="text-indent:25px">防毒面具主要用來阻斷經(jīng)呼吸道產(chǎn)生毒性的毒氣，如氯化氰（CK）、氯化苦（PS）等；對于生物毒劑的防護(hù)，也有一定的作用。在《禁止化學(xué)武器公約》生效后，防毒面具的需求曾一度降低；但隨著全球反恐行動的加強(qiáng)，潛在的化學(xué)襲擊的威脅依舊存在，防毒面具依舊是化學(xué)防護(hù)的重要器材，在各國的**中都有相當(dāng)?shù)难b備量。此外，在有毒有害氣體環(huán)境下工作的人群也在使用防毒面具作為防護(hù)；但一般民用防毒面具的結(jié)構(gòu)沒有***的復(fù)雜，各項指標(biāo)也不如***的嚴(yán)格。針對民用的化學(xué)防護(hù)，設(shè)計出更多的外觀，來適應(yīng)不同人群的需要。上海防毒面具制造防毒面具中濾毒罐為自吸過濾式呼吸防護(hù)面具的一部分，不能單獨(dú)使用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川學(xué)生防毒面具,防毒面具" src="https://tyunfile.71360.com/UploadFile/saifutelaobao/637356917225214844/6155398.png"></div><p style="text-indent:25px">長管式防毒面具氣密性測試方法可以進(jìn)行負(fù)壓密合性測試，也可以進(jìn)行正壓密合性測試。負(fù)壓氣密性測試的操作方法為：將手掌蓋住防毒面具濾毒盒表面輕輕吸氣，面具應(yīng)有輕微的塌陷，并向臉部靠攏。如您感覺氣體從面部和防毒面具間漏進(jìn)，請重新調(diào)整防毒面具位置和頭帶的松緊度，以達(dá)到密合良好。正壓氣密性測試的操作方法為：將手掌蓋住防毒面具呼氣閥并慢慢呼氣，面具應(yīng)向外輕輕膨脹，如氣體從您的面部和防毒面具間泄漏，重新調(diào)整防毒面具位置和頭帶的松緊度，達(dá)到密合良好。佩戴長管式防毒面具時不要讓頭帶和頭發(fā)壓在面罩密合框內(nèi)，也不能讓面罩的頭帶彎向面罩內(nèi)。另外，男性使用者在佩戴長管式防毒面具之前應(yīng)當(dāng)將自己的胡須剃刮干凈，以免影響接下來防毒面具密閉性檢測。</p><p style="text-indent:25px">防毒面具過濾層如何過濾氣溶膠目前常用玻璃纖維過濾層，它由許多層縱橫交錯的纖維網(wǎng)格組成，氣溶膠微粒通過時，總會接觸到纖維上而被阻留。發(fā)生這種接觸的效應(yīng)有截留效應(yīng)、慣性效應(yīng)、擴(kuò)散效應(yīng)和靜電效應(yīng)等四種，其中起主要作用的是**種效應(yīng)。截留效應(yīng)當(dāng)空氣流通過垂直于氣流方向的纖維時，氣流被分散和壓縮試圖繞過纖維，在通過后再重新匯合。如果空氣流中的粒子中心在小于粒子半徑的距離通過纖維表面，會和纖維表面碰撞被捕獲。粒子尺寸增大，截留捕獲的可能性也增大。沉降效應(yīng)只有大于2微米的粒子可以通過沉降捕獲，它取決于重力對氣流中粒子的吸引力，因此通過濾煙層的流速必須很低。慣性效應(yīng)當(dāng)具有足夠慣性的粒子不能充分改變方向而避開纖維，就會碰撞到纖維表面上被捕獲。擴(kuò)散效應(yīng)較小粒子的運(yùn)動受到和它相碰撞的空氣分子的影響，然后在空氣流做無規(guī)則的運(yùn)動，通過時和纖維發(fā)生碰撞被捕獲。取決于粒子的尺寸和空氣溫度。靜電效應(yīng)在靜電效應(yīng)中，目標(biāo)粒子具有自然的電荷，使過濾纖維帶有相反的電荷。因此粒子被吸引到纖維上。靜電效應(yīng)有助于其它捕獲效應(yīng)，特別是截留和擴(kuò)散效應(yīng)。防毒面具過濾層是專門用來過濾有害氣溶膠的。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川學(xué)生防毒面具,防毒面具" src="https://tyunfile.71360.com/UploadFile/saifutelaobao/637356917235058594/7301267.png"></div><p style="text-indent:25px">糧油倉儲行業(yè)不合適使用自吸式防毒面具，自吸過濾式防毒面具主要是指B類呼吸防護(hù)用品，防毒面具一般含有濾毒盒，它的工作原理是依靠使用人的呼吸壓力差來獲取經(jīng)過濾毒盒過濾后的空氣，而呼出的氣體是不能通過濾毒盒排出。而是經(jīng)呼氣閥流出。自吸過濾式防毒面具較大的使用前提是作業(yè)環(huán)境必須有足夠的氧含量（氧含量不得低于19.5%），且濾毒盒的選用必須能夠有效的防止環(huán)境中有毒氣體的入侵。但是，糧油倉儲行業(yè)中，一般都采用磷化氫環(huán)流熏蒸法來利用設(shè)備強(qiáng)制熏蒸氣體循環(huán)，促使其在糧堆內(nèi)快速均勻分布，從而殺蟲更迅速、徹底。這樣一來大家在工作時，較大的問題是倉庫內(nèi)部充斥大量的磷化氫氣體，氧含量極低；同時選用的防毒面具必須能有效的防護(hù)硫化氫對人體的傷害。綜合這兩個因素，自吸式防毒面具均不能滿足，一旦使用這類防毒面具，勢必導(dǎo)致作業(yè)人體中毒傷亡。防毒面具于一次世界大戰(zhàn)中產(chǎn)生。上海工業(yè)防毒面具</p><p style="text-indent:25px">防毒面具上的頭罩被破壞，可以考慮將濾毒罐直接的放在嘴里，然后再捏住鼻子，用濾毒罐來呼吸就好了。四川學(xué)生防毒面具</p><p style="text-indent:25px">防毒面具過濾層的防毒原理過濾層是專門用來濾除有害氣溶膠的。各種毒煙（固體微粒）、毒霧（液體微粒）、放射性灰塵和含細(xì)菌、病毒的配劑微粒等，均稱為有害氣溶膠。我們現(xiàn)在關(guān)注的霧霾，也可視為一種有害氣溶膠，加裝過濾層的防毒面具防它較有效。過濾層與有害氣溶膠的過濾過程和化學(xué)性質(zhì)關(guān)系不大，主要與其物理性質(zhì)、運(yùn)動特性有關(guān)。氣溶膠微粒的大小范圍是0.001～ 100微米，隨著微粒大小的變化，它的物理性質(zhì)和運(yùn)動規(guī)律都將發(fā)生變化，處在不斷的無規(guī)則運(yùn)動狀態(tài)，它周圍的空氣分子呈不規(guī)則的熱運(yùn)動。微粒越大，擴(kuò)散距離越小。一般半徑為0.1～0.5微米的微粒，移動距離約為10～20微米/秒。吸附劑層中炭粒之間的距離約為400微米左右，氣流通過吸附劑層的時間不到1秒，所以氣溶膠除了極少部分的微粒可能碰撞在炭粒表面被阻留外，絕大多數(shù)的微粒將穿過浸漬炭吸附劑層。這就是浸漬炭吸附劑層不能防護(hù)有害氣溶膠的原因。四川學(xué)生防毒面具</p><p style="text-indent:25px">中山市賽夫特勞保用品有限公司致力于安全、防護(hù)，是一家生產(chǎn)型的公司。賽夫特致力于為客戶提供良好的口罩，防塵面罩，防毒口罩，防毒面具，一切以用戶需求為中心，深受廣大客戶的歡迎。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造安全、防護(hù)良好品牌。賽夫特秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營理念，全力打造公司的重點(diǎn)競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1337643.html</p></div></div></div></div></div><div id="8nxovc3" class="page-right twoColRt"><div id="3ard8t3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="znu2aza" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" 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