產(chǎn)品詳情
意大利Fluid-o-Tech齒輪泵由一個(gè)獨(dú)立的電機(jī)驅(qū)動(dòng)，可有效地阻斷上游的壓力脈動(dòng)及流量波動(dòng)。在齒輪泵出口處的壓力脈動(dòng)可以控制在1%以內(nèi)。在擠出生產(chǎn)線上采用一臺(tái)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(shí)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(dòng)齒輪、從動(dòng)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(gè)齒輪的輪軸分別裝在兩泵蓋上的軸承孔內(nèi)，主動(dòng)齒輪軸伸出泵體，由電動(dòng)機(jī)帶動(dòng)旋轉(zhuǎn)。外嚙合齒輪泵結(jié)構(gòu)簡(jiǎn)單、重量輕、造價(jià)低、工作可靠、應(yīng)用范圍廣。
齒輪泵工作時(shí)，主動(dòng)輪隨電動(dòng)機(jī)一起旋轉(zhuǎn)并帶動(dòng)從動(dòng)輪跟著旋轉(zhuǎn)。當(dāng)吸入室一側(cè)的嚙合齒逐漸分開(kāi)時(shí)，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(gè)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(dòng)齒輪和從動(dòng)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(guò)規(guī)定壓力時(shí)，輸送液體可以自動(dòng)頂開(kāi)安全閥，使高壓液體返回吸入管。
內(nèi)嚙合齒輪泵，它由一對(duì)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(kāi)。當(dāng)主動(dòng)齒輪旋轉(zhuǎn)時(shí)，在齒輪脫開(kāi)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(wú)關(guān)等特點(diǎn)外，泵殼上無(wú)吸入閥和排出閥，具有結(jié)構(gòu)簡(jiǎn)單，流量均勻、工作可靠等特性，但效率低、噪音和振動(dòng)大、易磨損，主要用來(lái)輸送無(wú)腐蝕性、無(wú)固體顆粒并且具有潤(rùn)滑能力的各種油類，溫度一般不超過(guò)70 ℃，例如潤(rùn)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(diǎn)
（1）結(jié)構(gòu)簡(jiǎn)單，價(jià)格便宜；
（2）工作要求低，應(yīng)用廣泛；
（3）端蓋和齒輪的各個(gè)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(guó)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(kāi)線齒輪相比，最突出的優(yōu)點(diǎn)是齒輪嚙合過(guò)程中齒廓面沒(méi)有相對(duì)滑動(dòng)，所以齒面無(wú)磨損、運(yùn)轉(zhuǎn)平衡、無(wú)困液現(xiàn)象，噪聲低、壽命長(zhǎng)、效率高。該泵擺脫傳統(tǒng)設(shè)計(jì)的束縛，使得齒輪泵在設(shè)計(jì)、生產(chǎn)和使用上進(jìn)入了一個(gè)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(shí)際需要另行調(diào)整。但是此安全閥不能作減壓閥長(zhǎng)期工作，減壓閥在需要時(shí)可另行安裝。
該泵軸端密封設(shè)計(jì)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(zhǎng)，各有各的優(yōu)點(diǎn)。
MG204XD0PT
MG204XD0TT
MG204XD0GT
MG204XD1PT
MG204XG0PT
MG204XG0TT
MG204XG0GT
MG204XG1PT
MG204SG0PT
MG204SG0TT
MG204SG0GT
MG204SG1PT
MG204SG1TT
MG204SG1GT
MG204YD1PT
MG204YD1TT
MG204YD1GT
MG204YG0PT
MG204YG0TT
MG204YG0GT
MG209XD0PT
MG209XD0PT
MG209XD0TT
MG209XD0GT
MG209XD1PT
MG209XD1TT
MG209XD1GT
MG209XG1PT
MG209XG1TT
MG209XG1GT
MG209XG0PT
MG209XG0TT
MG209XG0GT
MG209SD0PT
MG209SD0TT
MG209SD0GT
MG209SD1PT
MG209SD1TT
MG209SD1GT
MG209SD1PT
MG209SG1PT
MG209SG1TT
MG209SG1GT
MG209SG0PT
MG209SG0TT
MG209SG0GT
MG209YD0PT
MG209YD0TT
MG209YD0GT
MG209YD1PT
MG209YD1TT
MG209YD1GT
MG213XD0PT
MG213XD0GT
MG213XD0TT
MG213XD1PT
MG213XD1TT
MG213XD1GT
MS217XD1GT
MS217XG0PT
MS217XG0TT
MS217XG0GT
MS217SD0PT
MS217SD0TT
MS217SD0GT
MS217SD1PT
MS217SD1TT
MS217SD1GT
MS217SG1PT
MS217SG1TT
MS217SG1GT
MS217YD0PT
MS217YD0TT
MS217YD0GT
MS217YD1PT
MS217YD1TT
MS217YD1GT
MS217YG0PT
MS217YG0GT
MS217YG0TT
MS217YG1PT
MS217YG1TT
MS217YG1GT
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
