產(chǎn)品詳情
Disassembly Instructions Provide a clean surface for work area. Separate the pumphead from the magnet cap. Remove the 3 screws and disassemble front housing , driven gear , central housing and dowel pins . If the pump is equipped with by-pass, make sure not to damage the sealing poppet . Remove the poppet assembly from the adjusting screw (fig. 5), remove the by-pass nut , the adjusting screw turning counter-clockwise, the by-pass washer and the by pass seal from the cap. Remove the screws which secure the magnet cup and the mounting plate to the rear housing and disassemble. Remove and discard all the bushings from the rear housing and the front housing with the bushing extractor tool P/N 60211 (fig.1). Remove seal and flat seals from the rear housing and from the front housing and discard them. If wear on front housing, rear housing or center housing is excessive, rebuilding the pump my not be advisable.
Re-Assembly Instructions Clean carefully all parts before re-assembling. Any foreign body material clinging to magnet must be removed.
Note Bushings - Bushings on both sides of gears must be recessed 0.5 mm from the face of the rear housing and front housing (fig. 2) Bushings Installation - Press 6 new bushings into the rear housing and front housing as shown in figure 2 using P/N 60212 installation tool. Once in place, the bushings need to be reamed with P/N 60210 reamer tool (fig. 3). Seals - Apply a thin coat of silicone grease on the central housing surfaces and place the flat seals on each side of it insert the driving gear into the rear housing and then insert the shaft of the driving gear in the driven magnet using the spacer P/N 60213 (fig. 4). Insert 2 dowel pins in the body. Slip carefully central housing onto dowel pins against body face, verifying the proper, alignment of the screw holes. Install the driven gear (The side of gear assembly with longer shaft extension goes into the rear housing). If pump is equipped with by-pass, install the by-pass
seal , then by-pass nut and tighten to prevent by-pass seal rotation. Then tap the by-pass seal with the P/N 60214 tool (fig. 6). Disassemble the by-pass nut and install by-pass washer and turn clockwise the adjusting screw before installing again the by-pass nut tightening. Align the cap bushing holes with gear shafts, and dowel pins with cap dowel pin holes and assemble. Make sure that the poppet assy goes fully into poppet holes and seat (fig. 5). Install 3 screws in cap and tighten alternaby as tight as possible. Turn driven magnet with fingers to check for any binding during the rotation: the magnet should turn freely. Install magnet cup and mounting plate with 3 screws and turn alternaby until tight. Assemble the driving magnet to the motor (see fig. 7) and the pumphead to the motor.
Service Kit - MG Gear Pump Stainless steel pumphead
Service kit contents 2 gears - 1 Teflon “O” ring - 2 Teflon flat seals - 6 bearings
Service kit tools 1 reamer P/N 60210 1 extractor P/N 60211 1 bushing tool P/N 60212 1 spacer P/N 60213 1 tap P/N 60214
SPARES & INSTRUCTIONS – 10/01
意大利Fluid-o-Tech齒輪泵由一個獨立的電機(jī)驅(qū)動，可有效地阻斷上游的壓力脈動及流量波動。在齒輪泵出口處的壓力脈動可以控制在1%以內(nèi)。在擠出生產(chǎn)線上采用一臺齒輪泵，可以提高流量輸出速度，減少物料在擠出機(jī)內(nèi)的剪切及駐留時間。
Fluid-o-Tech外嚙合齒輪泵是應(yīng)用最廣泛的一種齒輪泵，一般齒輪泵通常指的就是外嚙合齒輪泵。它的結(jié)構(gòu)如圖5-14所示，主要有主動齒輪、從動齒輪、泵體、泵蓋和安全閥等組成。泵體、泵蓋和齒輪構(gòu)成的密封空間就是齒輪泵的工作室。兩個齒輪的輪軸分別裝在兩泵蓋上的軸承孔內(nèi)，主動齒輪軸伸出泵體，由電動機(jī)帶動旋轉(zhuǎn)。外嚙合齒輪泵結(jié)構(gòu)簡單、重量輕、造價低、工作可靠、應(yīng)用范圍廣。
齒輪泵工作時，主動輪隨電動機(jī)一起旋轉(zhuǎn)并帶動從動輪跟著旋轉(zhuǎn)。當(dāng)吸入室一側(cè)的嚙合齒逐漸分開時，吸入室容積增大，壓力降低，便將吸人管中的液體吸入泵內(nèi)；吸入液體分兩路在齒槽內(nèi)被齒輪推送到排出室。液體進(jìn)入排出室后，由于兩個齒輪的輪齒不斷嚙合，使液體受擠壓而從排出室進(jìn)入排出管中。主動齒輪和從動齒輪不停地旋轉(zhuǎn)，泵就能連續(xù)不斷地吸入和排出液體。
泵體上裝有安全閥，當(dāng)排出壓力超過規(guī)定壓力時，輸送液體可以自動頂開安全閥，使高壓液體返回吸入管。
內(nèi)嚙合齒輪泵，它由一對相互嚙合的內(nèi)齒輪及它們中間的月牙形件、泵殼等構(gòu)成。月牙形件的作用是將吸入室和排出室隔開。當(dāng)主動齒輪旋轉(zhuǎn)時，在齒輪脫開嚙合的地方形成局部真空，液體被吸入泵內(nèi)充滿吸入室各齒間，然后沿月牙形件的內(nèi)外兩側(cè)分兩路進(jìn)入排出室。在輪齒進(jìn)入嚙合的地方，存在于齒間的液體被擠壓而送進(jìn)排出管。
齒輪泵除具有自吸能力、流量與排出壓力無關(guān)等特點外，泵殼上無吸入閥和排出閥，具有結(jié)構(gòu)簡單，流量均勻、工作可靠等特性，但效率低、噪音和振動大、易磨損，主要用來輸送無腐蝕性、無固體顆粒并且具有潤滑能力的各種油類，溫度一般不超過70 ℃，例如潤滑油、食用植物油等。一般流量范圍為0.045～30ms/h，壓力范圍為0.7—20MPa，工作轉(zhuǎn)速為1200—4000r/min。
Fluid-o-Tech齒輪泵結(jié)構(gòu)特點
（1）結(jié)構(gòu)簡單，價格便宜；
（2）工作要求低，應(yīng)用廣泛；
（3）端蓋和齒輪的各個齒間槽組成了許多固定的密封工作腔，只能用作定量泵。
齒輪采用國際九十年代先進(jìn)水平的新技術(shù)--雙圓弧正弦曲線齒型圓弧。它與漸開線齒輪相比，最突出的優(yōu)點是齒輪嚙合過程中齒廓面沒有相對滑動，所以齒面無磨損、運轉(zhuǎn)平衡、無困液現(xiàn)象，噪聲低、壽命長、效率高。該泵擺脫傳統(tǒng)設(shè)計的束縛，使得齒輪泵在設(shè)計、生產(chǎn)和使用上進(jìn)入了一個新的領(lǐng)域。
泵設(shè)有差壓式安全閥作為超載保護(hù)，安全閥全回流壓力為泵額定排出壓力1.5倍。也可在允許排出壓力范圍內(nèi)根據(jù)實際需要另行調(diào)整。但是此安全閥不能作減壓閥長期工作，減壓閥在需要時可另行安裝。
該泵軸端密封設(shè)計為兩種形式，一種是機(jī)械密封，另一種是填料密封，可根據(jù)具體使用情況和用戶要求確定。
齒輪泵泵的分類
就核心組成部件齒輪而言，主要由公法線齒輪泵和圓弧齒輪泵。公法線齒輪泵輸送含雜質(zhì)的介質(zhì)比圓弧齒輪泵要耐用，而圓弧齒輪泵結(jié)構(gòu)特殊，輸送干凈的介質(zhì)，噪音低，壽命長，各有各的優(yōu)點。
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