螺杆泵具(jù)有以下優(you)點：1．和離心(xīn)泵相比螺(luó)杆泵無需(xū)安裝閥們(men)流量是穩(wen)定的線性(xing)流動;2． 和柱(zhu)塞泵相比(bǐ)螺杆泵具(ju)有自吸能(néng)力強、吸入(ru)高度強;3．和(he)隔膜泵相(xiang)比螺杆泵(bèng)可輸送各(gè)種混合雜(zá)質含有氣(qi)體及固體(tǐ)顆粒或纖(xiān)維的介質(zhi)

，也可輸送(song)各種腐蝕(shí)性物質;4． 和(hé)齒輪相比(bǐ)，螺杆泵可(kě)輸送高粘(zhan)度的物質(zhì);5．和柱塞泵(beng)，隔膜泵及(ji)齒輪泵不(bú)同的是，螺(luo)杆泵可用(yòng)于藥劑填(tián)充和計量(liang).Screw pump has the following advantages: 1. Compared with screw pump and centrifugal pump doesn't need to install the valve flow is stable linear flow;2. Compared with those of screw pump plunger pump self-priming capability is strong, strong suction height;3. Compared with the diaphragm pump screw pump can transport all kinds of gas and solid particle mixing impurities or fiber medium, also can transport all kinds of corrosive substance;4. Compared with ear, screw pump can transport high viscosity material;5. And plunger pump, diaphragm pump and the gear pump, screw pump can be used in the pharmaceutical filling and metering.

     由于部件(jiàn)通用組合(hé)系列化有(you)多種結構(gou)，可用于卧(wò)式，法蘭式(shi)和立式安(ān)裝。 根據所(suo)輸送介質(zhì)需要還可(ke)提供加熱(rè)或冷卻結(jie)構。熱設備(bèi)中用做燃(rán)油噴油，燃(rán)油供應和(hé)輸送泵。在(zai)機械工業(ye)中用做液(yè)壓，潤滑和(he)遙控馬達(da)泵。在化學(xué)石油化工(gong)和食品工(gong)業中用做(zuo)裝載，輸送(sòng)和供液泵(bèng)。在船舶上(shàng)用做輸送(song)、增壓、燃油(yóu)噴射和潤(rùn)滑油泵以(yǐ)及船用液(yè)壓裝置泵(beng)。   Because there are many parts general combination series structure, can be used for horizontal, flange and vertical installation.According to the need to still can provide heating or cooling medium structure.Thermal equipment used in the fuel injection and fuel supply and transfer pump.In the mechanical industry used as hydraulic, lubrication and pump remote control motors.In the chemical petroleum chemical industry and food industry used as loading, transportation and feed liquid pump.On the ship for delivery, pressurization, fuel injection, and lubricating oil pump and Marine hydraulic gear pump. 

    三螺杆泵(beng)特點及優(yōu)點：（1）壓力和(he)流量範圍(wei)寬闊，流量(liàng)範圍0.2～320m3/h最高(gao)工作壓力(li)可達5MPa；（2）運送(song)液體的種(zhǒng)類和粘度(dù)範圍寬廣(guǎng),粘度範圍(wei)1mm2/s-760mm2/s；（3）因為三螺(luo)杆泵内的(de)回轉部件(jiàn)慣性力較(jiào)低，故可使(shǐ)用很高的(de)轉速；（4）吸入(rù)性能好，具(ju)有很強的(de)自吸能力(li)；（5）流量均勻(yun)連續，振動(dong)小，噪音低(dī)，幾乎沒有(you)脈動；（6）三螺(luo)杆泵結構(gou)堅實，安裝(zhuang)方便有(卧(wo)式、立式、法(fǎ)蘭式、插裝(zhuang)式）保養容(rong)易；（7）三螺杆(gan)泵具有很(hěn)強的耐熱(rè)性，一般工(gong)作溫度是(shì)（1~250°C)超過此溫(wen)度需特制(zhi)；（8）根據所輸(shū)送介質需(xu)要還可提(ti)供加熱或(huò)冷卻結構(gòu)；（9）三螺杆泵(beng)幾乎沒有(yǒu)磨損，三螺(luó)杆泵隻要(yao)選型正确(què)，使用壽命(mìng)長。（10）三螺杆(gan)泵的工作(zuò)效率高。Three screw pump features and advantages: (1) a wide range of pressure and flow, flow range of 0.2 ~ 320 m3 / h top working pressure of 5 mpa;(2) wide range of delivery and type of liquid viscosity, viscosity range 1 was/was/s - 760 s;(3) because the rotary inertia force component inside the three screw pump is low, it can use the high speed;(4) inhalation can good, strong self-priming capacity;(5) flow uniformly continuous, little vibration, low noise, little pulse;(6) three screw pump structure solid, easy installation with (horizontal, vertical, flange, cartridge) easy maintenance.Three screw pump (7) has strong heat resistance, the general working temperature is (1 ~ 250 ° C) beyond the temperature should be specially;(8) according to the needs of the medium can also provide heating or cooling structure;(9) three screw pump almost no wear and tear, three screw pump through proper selection, long service life.High efficiency of three screw pump (10).

    注(zhu)意事項:1.三(sān)螺杆泵的(de)轉速選用(yong):三螺杆泵(bèng)的流量與(yu)轉速成線(xiàn)性關系,相(xiàng)對于低轉(zhuan)速的螺杆(gan)泵,高轉速(su)的螺杆泵(beng)雖然能增(zēng)加了流量(liang)和揚程,但(dan)功率明顯(xian)增大,高轉(zhuǎn)速加速了(le)轉子與定(ding)子間的磨(mó)耗,必定使(shi)螺杆泵過(guo)早失效,而(er)且高轉速(sù)螺杆泵的(de)定轉子長(zhang)度很短,極(jí)易磨損,因(yīn)而縮短了(le)螺杆泵的(de)使用壽命(mìng)。通過減速(sù)機或無級(jí)調速機構(gou)來降低轉(zhuan)速,使勘轉(zhuǎn)速保持在(zài)每分三百(bai)轉以下較(jiao)為合理的(de)範圍内,與(yu)高速運轉(zhuan)的螺杆泵(bèng)相比,使用(yòng)壽命能延(yán)長幾倍。2.螺(luó)杆泵的品(pǐn)質:現在市(shi)場上的螺(luó)杆泵的種(zhong)類較多,相(xiang)對而言,進(jin)口的螺杆(gǎn)泵設計合(he)理,材質精(jīng)良,但價格(gé)較高,服務(wu)方面有的(de)不到位,配(pèi)件價格高(gao),訂貨周期(qī)長,可能影(yǐng)響生産的(de)正常運行(hang)。國内生産(chǎn)的大都仿(páng)制進口産(chan)品,産品質(zhì)量良莠不(bú)齊,在選用(yòng)國内生産(chan)的産品時(shí),在考慮其(qi)性價比的(de)時候,選用(yòng)低轉速,長(zhang)導程,傳動(dong)量部件材(cai)質優良,額(e)定壽命長(zhang)的産品。3.确(que)保雜物不(bú)進入泵體(ti):濕污泥中(zhong)混入的固(gù)體雜物會(huì)對螺杆泵(beng)的橡膠材(cai)質定子造(zào)成損壞,所(suǒ)以确保雜(zá)物不進入(rù)泵的腔體(tǐ)是很重要(yào)的,很多污(wu)水廠在泵(bèng)前加裝了(le)粉碎機,也(yě)有的安裝(zhuāng)格栅裝置(zhì)或濾網,阻(zu)擋雜物進(jin)入螺杆泵(bèng),對于格栅(shan)應及時清(qīng)撈以免造(zào)成堵塞。4.保(bao)持恒定的(de)出口壓力(li):螺杆泵是(shi)一種容積(jī)式回轉泵(bèng),當出口端(duan)受阻以後(hòu),壓力會逐(zhú)漸升高,以(yǐ)至于超過(guo)預定的壓(yā)力值.此時(shi)電機負荷(he)急劇增加(jia).傳動機械(xiè)相關零件(jian)的負載也(yě)會超出設(she)計值,嚴重(zhòng)時會發生(sheng)電機燒毀(hui),傳動零件(jian)斷裂.為了(le)避免螺杆(gan)泵損壞,一(yi)般會在三(sān)螺杆泵出(chū)口處安裝(zhuāng)旁通溢流(liu)閥,用以穩(wěn)定出口壓(yā)力,保持泵(bèng)的正常運(yùn)轉。5.避免斷(duan)料:三螺杆(gan)泵決不允(yun)許在斷料(liào)的情形下(xia)運轉,一經(jing)發生,橡膠(jiao)定子由于(yu)幹磨擦,瞬(shùn)間産生高(gao)溫而燒壞(huai),所以,粉碎(sui)機完好,格(gé)栅暢通是(shi)螺杆泵正(zhèng)常運轉的(de)必要條件(jian)之一,為此(cǐ),有些螺杆(gǎn)泵還在泵(bèng)身上安裝(zhuang)了斷料停(ting)機裝置,當(dang)發生斷料(liào)時,由于螺(luó)杆泵其有(you)自吸功能(néng)的特性,腔(qiang)體内會産(chǎn)生真空,真(zhēn)空裝置會(huì)使螺杆泵(beng)停止運轉(zhuǎn)。5選型問題(ti):三螺杆泵(bèng)選型時，要(yào)盡可能詳(xiang)盡地了解(jiě)泵的使用(yong)條件，除了(le)運行參數(shù)，如流量，壓(ya)力需要清(qing)楚以外，輸(shu)送介質特(tè)性如介質(zhì)的腐蝕性(xing)，含汽量，含(hán)固溶物的(de)比率及固(gù)體顆粒的(de)大小，以及(jí)介質的工(gōng)作溫度，粘(zhan)度，比重，對(dui)材料的腐(fǔ)蝕性等和(he)泵裝置的(de)吸入條件(jiàn)，安裝條件(jian)均要了解(jiě)，根據我們(men)的經驗，三(sān)螺杆泵選(xuan)型時應注(zhù)意以下幾(jǐ)點：轉速的(de)選擇Note: 1. The three screw pump speed selection: a linear relationship with three-screw pump flow rate and rotational speed, low relative to the rotating speed of screw pump, high rotational speed of screw pump, although can increase the flow and head but power obviously increase, high speed accelerate the abrasion between the rotor and stator, must make the premature failure of screw pump, and the high speed of the screw pump stator length is short, easy to wear and tear, thus shortening the service life of the screw pump.Through reducer or stepless speed regulation mechanism to reduce the speed, keep to determine speed at three hundred revolutions per minute (the following reasonable range, compared with the high speed of screw pump, can prolong service life of a few times.2. The quality of the screw pump, now in the market is more, the kinds of screw pump, screw pump imported from rational design, excellent material, but the price is higher, the service aspect some do not reach the designated position, accessories price is high, the order cycle is long, may affect the normal running of production.Domestic production of generic mostly imported products, product quality is good and bad are intermingled, when choosing the products of the domestic, considering its cost-effective, choose low rotation speed, long lead, transmission quantity of parts material is good, rated life long product.3. Ensure that stuff does not enter the pump body: wet sludge mixed with solid debris can cause damage to the rubber stator of screw pump, so make sure debris into the cavity of the pump is not very important, a lot of sewage plant in front of the pump with a grinder, also some installation or mesh grille device, stop the debris into screw pump, the grating should be timely get so as not to cause congestion.4. Maintain a constant outlet pressure: screw pump is a kind of positive displacement rotary pump, when after the outlet is blocked, the pressure will gradually rise, so that more than a predetermined pressure value. The motor load increases sharply. Transmission machinery and related parts load will exceed the design value, serious happens when the motor is burnt, transmission parts fracture. In order to avoid damage of screw pump, typically, bypass the overflow valve is installed on the three screw pump outlet to stable outlet pressure, maintain the normal operation of the pump.5. Avoid cutting: three screw pump must not be allowed in the case of the cutting operation, once happened, the rubber stator due to dry friction, instant high temperature and burn out, so, crushing machine in good condition, grille flow is one of the necessary conditions for normal operation of the screw pump, therefore, some screw pump on pump installation end stop device, when cutting, due to the characteristics of the screw pump has a self-priming function, can produce vacuum chamber, vacuum device can make the screw pump stop running.5 selection problem: three screw pump selection, should understand the using condition of pump as much detail as possible, in addition to the operating parameters, such as flow rate, pressure needs to be clear, the characteristics of medium such as corrosive medium, gas content, including ratio of solid solution and the size of the solid particles, as well as the working temperature, medium viscosity, density, corrosion of materials and pump suction conditions, such as the installation conditions are to understand, according to our experience, three screw pump selection should pay attention to the following:The choice of speed

    螺杆(gan)磨損五點(diǎn)原因:1、每種(zhǒng)塑料，都有(you)一個理想(xiang)塑化的加(jiā)工溫度範(fàn)圍，應該控(kong)制料筒加(jiā)工溫度，使(shǐ)之接近這(zhè)個溫度範(fan)圍。粒狀塑(sù)料從料鬥(dou)進入料筒(tong)，首先會到(dao)達加料段(duàn)，在加料段(duàn)必然會出(chū)現幹性磨(mó)擦，當這些(xie)塑料受熱(re)不足，熔融(róng)不均時，很(hěn)易造成料(liào)筒内壁及(ji)螺杆表面(miàn)磨損增大(dà)。同樣，在壓(yā)縮段和均(jun)化段，如果(guǒ)塑料的熔(rong)融狀态紊(wen)亂不均，也(ye)會造成磨(mó)損增快。2、轉(zhuǎn)速應調校(xiao)得當。由于(yu)部分塑料(liào)加有強化(huà)劑，如玻璃(li)纖維、礦物(wù)質或其他(tā)填充料。這(zhè)些物質對(duì)金屬材質(zhi)的磨擦力(lì)往往比熔(rong)融塑料的(de)大得多。在(zai)注塑這些(xiē)塑料時，如(rú)果用高的(de)轉速成，則(zé)在提高對(dui)塑料的剪(jian)切力的同(tong)時，亦将令(ling)強化相應(yīng)地産生更(gèng)多被撕碎(sui)的纖維，被(bei)撕碎的纖(xian)維含有鋒(feng)利末端，令(lìng)磨損力大(dà)為增加。無(wú)機礦物質(zhì)在金屬表(biao)面高速滑(hua)行時，其刮(gua)削作用也(ye)不小。所以(yǐ)轉速不宜(yí)調得太高(gao)。3、螺杆在機(jī)筒内轉動(dong)，物料與二(èr)者的摩擦(ca)，使螺杆與(yǔ)機筒的工(gōng)作表面逐(zhú)漸磨損：螺(luo)杆直徑逐(zhu)漸縮小，機(ji)筒的内孔(kǒng)直徑逐漸(jiàn)加大。這樣(yàng)，螺杆與機(ji)筒的配合(he)直徑間隙(xi)，随着二者(zhe)的逐漸磨(mo)損而一點(dian)點加大。可(kě)是，由于機(jī)筒前面機(jī)頭和分流(liú)闆的阻力(lì)沒有改變(bian)，這就增加(jiā)了被擠塑(sù)物料前進(jin)時的漏流(liu)量，即物料(liào)從直徑間(jian)隙處向進(jin)料方向流(liu)動量增加(jia)。結果使塑(sù)膠機械生(shēng)産量下降(jiàng)。這種現象(xiàng)又使物料(liao)在機筒内(nei)停留時間(jiān)增加，造成(cheng)物料分解(jie)。如果是聚(jù)乙烯，分解(jiě)産生的氯(lü)化氫氣體(tǐ)加強了對(dui)螺杆和機(jī)筒的腐蝕(shi)。4、 物料中如(rú)有碳酸鈣(gài)和玻璃纖(xian)維等填充(chong)料，能加快(kuài)螺杆和機(ji)筒的磨損(sǔn)。5、 由于物料(liào)沒有塑化(hua)均勻，或是(shi)有金屬異(yì)物混入料(liao)中，使螺杆(gǎn)轉動扭矩(jǔ)力突然增(zeng)加，這種扭(niu)矩超出螺(luo)杆的強度(du)極限，使螺(luó)杆扭斷。這(zhè)是一種非(fēi)常規事故(gu)損壞。Screw wear five reasons: 1, each type of plastic, there is a ideal plasticizing processing temperature range, temperature should be controlled cylinder processing, make it close to the temperature range.Granular plastic from the hopper into the cylinder, will first reach the feeding section, the charging period of inevitable dry friction, when the plastic is heated, fused inequality, very easy to cause the inner wall of the cylinder and the screw surface wear.Similarly, in compression and homogenization, if uneven plastic molten state of disorder, can cause wear faster.2, rotational speed should be proper calibration.As part of the plastic with enhancer, such as glass fiber, minerals, or other filling material.The material of metal friction often is much bigger than the molten plastic.When these plastic injection molding, if with high speed, is in the increase of plastic shear force at the same time, will also strengthen accordingly produce more fiber is torn, torn fiber containing sharp end, the wear and tear strength increased greatly.Inorganic minerals in the metal surface high-speed taxi, scraping effect is also not small.So the speed shoulds not be too high.3, screw rotation inside the barrel, friction material with both the screw and barrel of the surface of the work gradually wear: screw diameter reduced gradually, the barrel inner hole diameter increase gradually.In this way, the atching of the screw and barrel diameter clearance, with the gradual wear and tear of the a little bit more., however, because of the barrel in front of the nose and shunt plate resistance has not changed, which adds to the forward extrusion material leakage flow, the material feeding direction from diameter clearance flow has increased.Results decreased plastic machinery production.This phenomenon and make the material stay in the barrel time increased, the material break down.If it is polyethylene, decomposition of hydrogen chloride gas is used to strengthen the corrosion of the screw and barrel.4, material such as calcium carbonate and the filling material such as glass fiber, can speed up the screw and barrel of the wear and tear.5, as there is no uniform plasticizing, material or metal foreign bodies with material, to rotate the screw torque force suddenly increases, the torque beyond the ultimate strength of the screw, the screw twist off.This is a kind of unconventional accident damage.

     立式(shì)三螺杆泵(bèng)是軸向輸(shu)送介質的(de)定量容積(jī)式轉子泵(beng)，立式三螺(luo)杆泵由特(tè)殊的形狀(zhuang)曲線構成(cheng)的螺旋型(xing)面的主動(dong)螺杆和兩(liǎng)根從動螺(luó)杆互相齧(nie)合及它們(men)與泵套三(sān)孔内表面(mian)的配合，在(zai)泵的進出(chū)油口之間(jiān)形成的數(shu)級動密封(fēng)腔，當主螺(luo)杆和從動(dòng)螺杆互相(xiàng)齧合轉動(dong)時，由于帶(dài)有一定黏(nian)度的介質(zhi)使螺杆之(zhī)間形成逐(zhu)個的密封(fēng)腔，并且螺(luo)杆和螺杆(gǎn)之間，螺杆(gǎn)與泵套之(zhi)間形成油(you)膜，不斷形(xing)成數個運(yun)動的密封(fēng)腔，這些動(dong)密封腔不(bu)斷将介質(zhì)從泵的進(jin)口沿螺杆(gan)軸向輸送(song)到泵的出(chū)口，不斷在(zai)泵的進口(kou)處形成真(zhen)空。立式三(sān)螺杆泵進(jìn)口處的介(jiè)質不斷在(zài)大氣壓的(de)作用下，壓(yā)入泵腔内(nèi)，(由于此時(shi)泵已經有(you)自吸能力(li)，也可稱做(zuo)吸入泵腔(qiang)内)使所輸(shū)送的介質(zhi)逐級密封(feng)逐級提升(sheng)壓力，形成(chéng)一個連續(xù)平穩軸向(xiàng)移動的壓(ya)力液體。由(yóu)于是軸向(xiàng)密封輸送(song)，因此無攪(jiao)拌無壓力(lì)脈動。立式(shi)三螺杆泵(bèng)運行平穩(wěn)，噪音低。主(zhǔ)動螺杆和(he)兩根從動(dong)螺杆的軸(zhóu)向力采用(yong)液壓平衡(heng)裝置，從動(dòng)螺杆由液(yè)壓力驅動(dong)旋轉，所以(yǐ)螺杆之間(jian)無磨損，使(shǐ)用壽命長(zhang)；立式三螺(luó)杆泵采用(yong)機械密封(fēng)加骨架油(yóu)封雙重密(mì)封方式，無(wú)洩露。立式(shi)三螺杆泵(bèng)内部結構(gòu)簡單緊湊(cou)，效率高、具(jù)有很強的(de)自吸能力(li)、節能效果(guo)好；且安裝(zhuāng)、使用和維(wei)護檢修方(fang)便。立式三(sān)螺杆泵所(suo)輸送液體(ti)為各種不(bu)含固體顆(ke)粒、無腐蝕(shí)性油類及(ji)類似油類(lèi)的潤滑性(xing)液體，所輸(shu)送黏度為(wei)1.2-100oE(3.0-760st)，高粘度液(ye)體也可以(yǐ)通過加溫(wen)、降粘後輸(shū)送。其溫度(dù)一般不超(chāo)過150o，流量範(fàn)圍3.32L/min-10000L/min(0.2m3/h-590m3/h)。部分特(tè)殊産品最(zui)高工作壓(yā)力可以達(dá)到16-21Mpa。該泵泵(beng)體可采用(yong)焊接工藝(yi)，如有需要(yào)可以根據(jù)管路布置(zhì)設計進出(chu)口尺寸及(jí)位置，也可(ke)以根據介(jiè)質的不同(tóng)，采用不同(tóng)材料（如不(bu)鏽鋼）生産(chan)。Three screw pump is a vertical axial transport     medium of quantitative positive displacement rotor pump, vertical three screw pump is composed of special shape curve of the helical surface driving screw and two driven screw meshing with each other and their inner surface of cooperate with the pump sets of three holes, formed between in and out of the oil outlet of pump number level dynamic seal cavity, when the LordScrew and driven screw meshing turns to each other, because of a certain viscosity medium make one sealed cavity formed between the screw, and between the screw and screw, the screw and the oil film formed between pump sets, constantly forming a number of movement of the sealed cavity, the dynamic seal cavity will continuously medium from the pump inlet along the screw axial loseTo the pump export, and constantly in formation at the inlet of the vacuum pump.Vertical three-screw pump inlet medium under the action of atmospheric pressure, pressure into the pump chamber, (because the pump has a self-priming capacity, can also be called suction pump cavity) make the conveying medium sealing lift pressure step by step, step by step to form a continuous smoothAxial movement of liquid pressure.Due to axial seal is conveying, so without mixing pressure pulsation.Vertical three-screw pump smooth operation, low noise.Active screw and axial force of the two driven screw adopts hydraulic balance device, driven screw driven by hydraulic pressure, so no wear between the screw, long service life;Vertical three-screw pump adopts double seal mechanical seal and framework oil seal, no leakage.Vertical three-screw pump internal simple and compact structure, high efficiency, strong self-priming capacity, energy saving effect is good;And easy installation, use and maintenance.Vertical three screw pump for conveying liquid containing no solid particles, no corrosive oil and similar oil lubrication and liquid delivery by viscosity of 1.2-100 oe (3.0-760 (st), but can be by heating, high viscosity liquid viscosity after delivery.The temperature is generally not more than 150 o, flow range 3.32 L/min - 10000 L/min (0.2 m3 / h - 590 m3 / h).Some special product highest workerAs pressure can reach 16-21 mpa.The pump pump body welding technology can be used, if necessary can according to the piping layout design size and position of imports and exports, can also according to different medium, the different materials such as stainless steel production.

    介質粘度(dù)：1～1500mm2/s，降低轉速(sù)粘度可到(dao)3×10mm2/s。

    壓力範圍(wei)：5.0MPa

    流量範圍(wéi)：1～2000m3/h

    溫度範圍(wei)：-15℃～320℃

    性能範圍(wei)：1、輸送液體(ti)無脈動、無(wú)攪拌、振動(dong)小、噪音低(dī)；2、有較強的(de)自吸能力(li)，允許含有(yǒu)少量微小(xiǎo)顆粒及在(zài)一定程度(du)内氣液混(hùn)輸；3、采用同(tóng)步齒輪驅(qū)動，螺杆之(zhī)間不接觸(chù)，軸端采用(yong)機械密封(fēng)，泵的使用(yong)壽命長；4、合(hé)适的材料(liao)，可以輸送(song)有腐蝕性(xìng)的介質，适(shì)用範圍廣(guǎng)；5、雙吸式結(jie)構，螺杆上(shàng)軸向力得(de)到平衡。Medium viscosity: 1 ~ 1500 was/s, lower viscosity of rotational speed to 3 x 10 was/s.

The range of pressure: 5.0 MPa

Flow range: 1 ~ 2000 m3 / h

Temperature range: 15 ℃ ~ 320 ℃

Performance: 1, transmission fluid pulsation, stirring, little vibration, low noise;2, strong self-priming capacity, allow contains a small amount of tiny particles and to a certain extent in gas-

liquid mixing to lose;3, using synchronous gear drive, no contact between the screw, shaft end USES the mechanical seal, long service life of pump;4, with suitable material, can transport corrosive 

medium, the applicable scope is wide;5, the structure of the double suction type, screw on the axial force balance.