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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8n8fvco" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024241562500/2823839.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="s8htlnu" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>甘肅省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>寧夏止回閥電話,止回閥</p><p><span>***更新：</span>2021-01-04 09:14:48</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="s8cewyf" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">甘肅誠禹惠物資有限公司</a></p><p><span>聯(lián)系人：</span>楊和平</p><p><span>郵箱: </span>349134533@qq.com</p><p><span>電話: </span>18294448288</p><p><span>傳真: </span>0931_</p><p><span>網(wǎng)址: </span>http://www.gscyhwz.com</p><p><span>手機(jī): </span>0931-7840458</p><p><span>地址: </span>北濱河西路1226之27號(hào)(立達(dá)建材城A區(qū)11棟104室)</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="b2gnzgn" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="wlif7qa" class="box"><p><p> <span style="font-size:16px;">泵出口止回閥的安裝1、旋啟式止回閥一般安裝在水平管道上：對(duì)于口徑DN<80mm的止回閥，也可安裝在垂直或向上傾斜的管道上。2、直通式升降式止回閥應(yīng)安裝在水平管道上;立式升降式止回閥必須安裝在垂直管道上，寧夏止回閥電話，介質(zhì)為自下而上流動(dòng)。3，寧夏止回閥電話、由于止回閥容易損壞，因此，應(yīng)靠近泵出口安裝止回閥，在止回閥上部設(shè)有切斷閥(一般用球閥或閘閥)，方便檢修。4、為便于止回閥拆卸前泄壓，對(duì)于止回閥本身不帶放凈閥的，應(yīng)在止回閥與切斷閥之間加裝泄壓用放凈閥。防止水力沖擊對(duì)止回閥密封面損壞的保護(hù)措施止回閥的設(shè)置，起到了防止物料倒流，避免泵葉輪遭受液擊的作用。但就止回閥本身而言，設(shè)置不當(dāng)，會(huì)造成水擊所產(chǎn)生的閥瓣對(duì)閥座的突然撞擊，損及止回閥密封面。因此，應(yīng)采取以幾點(diǎn)保護(hù)措施。1、對(duì)于泵出口設(shè)置>80mm的旋啟式止回閥，應(yīng)采用水平安裝方式，以減弱閥瓣回座及產(chǎn)生的撞擊。2、對(duì)于泵出口止回閥口徑大于等于150mm的管路，應(yīng)在止回閥前后設(shè)置旁路，防止閥前壓力上升過高，對(duì)止回閥密封面造成的損害。3、對(duì)泵排出管路起點(diǎn)和終點(diǎn)壓力較高管路，不允許設(shè)置旁路的，寧夏止回閥電話，可采取以下措施：設(shè)置安全閥以代替旁路閥。其作用與旁路</span><span style="font-size:16px;">閥</span><span style="font-size:16px;">相似。它設(shè)置在止回閥出口附近，當(dāng)水擊使壓力升高時(shí)。</span> 升降式止回閥可分為立式和直通式兩種。寧夏止回閥電話</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏止回閥電話,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024241562500/2823839.png"></div><p> <span style="font-size:16px;">止回閥是*允許介質(zhì)沿一個(gè)方向流動(dòng)的裝置，閥瓣依靠自身重量及介質(zhì)壓力產(chǎn)生動(dòng)作，實(shí)現(xiàn)阻斷介質(zhì)倒流的一種閥門。它根據(jù)系統(tǒng)中的壓力自動(dòng)工作，運(yùn)行中不需要用戶或執(zhí)行裝置來干預(yù)，屬于自動(dòng)閥類。又稱為逆止閥、單向閥、回流閥或隔離閥。按結(jié)構(gòu)分為升降式、旋啟式和蝶式止回閥。主要作用：防止介質(zhì)倒流、防止水泵反轉(zhuǎn)、防止容器內(nèi)的介質(zhì)泄露。升降式止回閥的閥瓣沿著閥體垂直中心線動(dòng)作，結(jié)構(gòu)與截止閥類似，但只有閥瓣，而沒有人為旋起的閥桿。介質(zhì)從進(jìn)口端(下側(cè))流入，從出口端(上側(cè))流出。當(dāng)進(jìn)口壓力大于閥瓣重量及其流動(dòng)阻力之和時(shí)，閥門被開啟。反之，介質(zhì)倒流時(shí)閥門則關(guān)閉。工作原理：旋啟式止回閥的閥瓣繞閥座通道里的轉(zhuǎn)軸做旋轉(zhuǎn)運(yùn)動(dòng)，順流時(shí)閥瓣打開，有逆向流動(dòng)時(shí)閥瓣關(guān)閉。適用于低</span><span style="font-size:16px;">流速和水流方向不變的大口徑管網(wǎng)系統(tǒng)。</span> 寧夏止回閥電話流道復(fù)雜，沖刷嚴(yán)重，不宜用于含有固體顆粒的介質(zhì)工況;</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏止回閥電話,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024209511718/2314630.png"></div><p> <span style="font-size:16px;">雙閥瓣止回閥設(shè)計(jì)特征傳統(tǒng)的做法是配置鉸鏈銷通過閥體并且由螺紋塞或法蘭來提供壓力密封。非固定式設(shè)計(jì)是從閥體一端軸向地安裝所有內(nèi)件，內(nèi)部止動(dòng)件固定鏈銷而不必穿透閥體。套筒式閥將所有的內(nèi)部組件，包括閥座，安裝在閥體內(nèi)的軸向鎖定的一個(gè)套筒內(nèi)。同樣，閥體也不必被穿透而存在潛在泄漏的路徑。備件套筒可以儲(chǔ)存以便在緊急情況下快速修復(fù)。套筒可以在工作臺(tái)上維修和檢查而非現(xiàn)場。所有的設(shè)計(jì)應(yīng)包括一個(gè)固定的彈簧擋板，使每個(gè)閥辦能夠**地彈開和平衡且同步運(yùn)行。通常，閥具有鑄鋼的閥體和套筒和11/13Cr的閥瓣。閥座可以是一體的和硬面的或有軟密封的。閥門口徑為DN50?DN600,壓力可以達(dá)到壓力ANSI150LB?1500LB;閥門口徑小于DN300的，壓力可以做到2500LB。閥門的口徑達(dá)到DN2100和閥門的壓力等級(jí)比較高可達(dá)到ANSI4500LB的也適用。某些金屬對(duì)夾止回閥有一個(gè)襯里。有PFA襯里的不銹鋼閥門被大規(guī)模生產(chǎn)的口徑為DN15?DN100。比較大的壓力是lOObar?，溫度可達(dá)200℃。鑄鐵對(duì)夾閥門，帶有鋁青銅的閥瓣，口徑可從DN50到DN600;壓力為16bar。閥體可用環(huán)氧樹脂來防止腐蝕。</span> </p><p> <span style="font-size:16px;">止回閥是指依靠介質(zhì)本身流動(dòng)而自動(dòng)開、閉閥瓣，用來防止介質(zhì)倒流的閥門，又稱逆止閥、單向閥、逆流閥和背壓閥。止回閥屬于一種自動(dòng)閥門，其主要作用是防止介質(zhì)倒流、防止泵及驅(qū)動(dòng)電動(dòng)機(jī)反轉(zhuǎn)，以及容器介質(zhì)的泄放。止回閥還可用于給其中的壓力可能升至超過系統(tǒng)壓的輔助系統(tǒng)提供補(bǔ)給的管路上。止回閥主要可分為旋啟式止回閥（依重心旋轉(zhuǎn)）與升降式止回閥（沿軸線移動(dòng)）。止回閥這種類型的閥門的作用是只允許介質(zhì)向一個(gè)方向流動(dòng)，而且阻止反方向流動(dòng)。目前市面上所有的油煙機(jī)止回閥，對(duì)閥蓋的約束有依靠閥蓋自身重力閉合，彈簧加壓閉合，微磁力閉合來實(shí)現(xiàn)密封，還有的電動(dòng)閉合！通常這種閥門是自動(dòng)工作的，在一個(gè)方向流動(dòng)的流體壓力作用下，閥瓣打開；流體反方向流動(dòng)時(shí)，由流體壓力和</span><span style="font-size:16px;">閥瓣的自重合閥瓣作用于閥座，從而切斷流動(dòng)。</span> 只允許介質(zhì)向一個(gè)方向流動(dòng)、流體在壓力作用下使閥門的閥瓣開啟。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏止回閥電話,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024375351562/9522742.png"></div><p> <span style="font-size:16px;">消聲止回閥主要適用于高層建筑供水、排水系統(tǒng)，消防管道給水系統(tǒng)等。此消聲止回閥可有效地防止介質(zhì)倒流而產(chǎn)生破壞性水錘，保護(hù)水泵和管道其它設(shè)備。1、閥瓣采用頭”外形設(shè)計(jì)，閥體采用“腰鼓”外形設(shè)計(jì)，改善介質(zhì)流向，降低流阻系數(shù)。2、閥門采用短結(jié)構(gòu)形式，雖然水頭損失比升降式靜音止回閥稍大些，但體積小、價(jià)格便宜。3、結(jié)構(gòu)緊湊，導(dǎo)向軸與導(dǎo)向架之間裝有非金屬潤滑套，閥瓣升降靈活，不會(huì)產(chǎn)生抱死現(xiàn)象。4、骨架式橡膠密封圈直接鑲嵌在閥體上，避免了介質(zhì)長時(shí)間對(duì)密封圈的直接沖刷，使用壽命明顯延長，堅(jiān)固、耐用。5、閥瓣啟閉行程短，可以有效的防止水錘產(chǎn)生。6、適用于給排水系統(tǒng)，高層建筑管網(wǎng)，可安裝在泵的出口處，結(jié)構(gòu)稍加改動(dòng)，可做為吸水底閥使用，但不適用于污水管網(wǎng)。</span> 止回閥的安裝位置如何確定？崆峒區(qū)止回閥銷售電話</p><p style="text-indent:25px">受工作原理的影響，只能安裝在水平管道上;寧夏止回閥電話</p><p> <span style="font-size:16px;">倒流防止器和止回閥的區(qū)別1，功能方面倒流防bai止器主要用于防止水的回du流，即使其內(nèi)部所有可能的密封全部失效,仍能確保不發(fā)生dao回流污染事故.是保障水質(zhì)的**技術(shù)措施.止回閥主要用于保證水的單向流動(dòng)，防止水倒流.但無防污性能,當(dāng)止回密封面失效，不能有效防止水的回流污染。設(shè)有倒流防止器的管段,不需要再設(shè)止回閥；反之不能替代。2，結(jié)構(gòu)方面止回閥只有單級(jí)止回密封結(jié)構(gòu),結(jié)構(gòu)長度小,自重輕減壓型倒流防止器包含有兩個(gè)**止回密封+自動(dòng)感應(yīng)的泄水器,體長質(zhì)重.低阻力倒流防止器包含兩級(jí)止回密封+**式自動(dòng)泄水器，外形小,自重輕3，水頭損失方面止回閥的水頭損失一般小于；減壓型倒流防止器的水頭損失:一般在。為低壓隔斷形式，如果水損過低,隔斷安全性將無法保證；低阻力倒流防止器的水頭損失小于。</span> 寧夏止回閥電話</p><p style="text-indent:25px">甘肅誠禹惠物資有限公司主要經(jīng)營范圍是機(jī)械及行業(yè)設(shè)備，擁有一支專業(yè)技術(shù)團(tuán)隊(duì)和良好的市場口碑。公司業(yè)務(wù)分為誠禹惠閥門，球閥批發(fā)，閥門批發(fā)，蝶閥批發(fā)等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。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，打造機(jī)械及行業(yè)設(shè)備良好品牌。甘肅誠禹惠物資秉承“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/2700286.html</p></div></div></div></div></div><div id="ilnugd8" class="page-right 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