| 地址： | 河北省泊頭市道東街88号 |
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| 船用柴油機噴油泵用SMH80R42E6.7W21三螺杆泵配5.5kw-4電機 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 發布時間：2015-1-7 9:19:38 點擊次數： | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SM三螺杆泵(船用柴油機噴油泵)結構:三螺杆泵是利用螺杆的回轉來吸排液體的。中間螺杆為主動螺杆，由原動機帶動回轉，兩邊的螺杆為從動螺杆，随主動螺杆作反向旋轉。主、從動螺 杆的螺紋均為雙頭螺紋。三螺杆泵是螺杆式式容積泵。在三螺矸泵中，由于主螺杆與從動螺杆上螺旋槽相互齧合及它們與襯套三孔内表面的配合，得以在泵的進口與出口之間形成數級動密封室，這些動密封室将不斷把液體由泵進口軸向移動到泵出 口，并使所輸送液體逐級升壓。從而形成一個連續、平穩、軸向移動的壓力液體。三螺杆泵所輸送液體為不含固體顆粒，無腐蝕性油類及類似油的潤滑性液體，粘度1.2~100oE(3.0~760cst)，高粘度液體亦可通過加溫降粘後輸送，其溫度不超過150oC。Three screw pump pump structure: three screw pump is the use of screw rotary to absorb liquid.The middle screw to active screw, the prime mover, on both sides of the screw is driven screw, with the active screw do reverse rotation.Lord, driven screw thread are double thread.Three screw pump is screw type positive displacement pump.In three screw pump of coal and gangue, the spiral groove on the main screw and driven screw pitch and they cooperate with three hole on the surface of the bushing, formed between in the import and export of the pump number level dynamic seal chamber, the dynamic seal chamber will continue to move liquids from pump axial pump out of the mouth, and make the conveying liquid booster step by step.To form a continuous, smooth, axial movement of liquid pressure.Three screw pump for conveying liquid not containing solid particles, non-corrosive oil and similar oil lubrication and liquid viscosity of 1.2 ~ 100 oe (3.0 ~ 760 CST), is high viscosity liquids through the heating viscosity after delivery, the temperature does not exceed 150 oc. SMH三螺杆泵工作原理: 由于各螺杆的相互齧合以及螺杆與襯筒内壁的緊密配合，在泵的吸入口和排出口之間，就會被分隔成一個或多個密封空間。随着螺杆的轉動和齧合，這些密封空間在泵的吸入端不斷形成，将吸入室中的液體封入其中，并自吸入室沿螺杆軸向連續地推移至排出端，将封閉在 各空間中的液體不斷排出，猶如一螺母在螺紋回轉時被不斷向前推進的情形那樣，其中螺紋圈數看做液體，當螺釘旋轉時螺紋在轉動時就相當于液體在螺杆泵裡面的情形，這就是螺杆泵的基本工作原理。螺杆與殼體之間的密封面是一個空間曲面。在這個曲面上存在着諸如ab或de之類的非密封區，并且與螺杆的凹槽部分形成許多三角形的缺口abc、def。這些三角形 的缺口構成液體的通道，使主動螺杆凹槽A與從動螺杆上的凹槽B、C相連通。而凹槽B、C又沿着自己的螺線繞向背面， 并分别和背面的凹槽D、E相連通。由于在槽D、E與槽F(它屬于另一頭螺線)相銜接的密封面上，也存在着類似于正面的三角形缺口a’b’c’，所以D、F、E也将相通。這樣，凹槽ABCDEA也就組成一個“∞” 形的密封空間(如采用單頭螺紋，則凹槽将順軸向盤饒螺杆，将吸排口貫通，無法形成密封)。不難想象，在這樣的螺杆 上，将形成許多個獨立的“∞”形密封空間，每一個密封空間所占有的軸向長度恰好等于累杆的導程t。因此，為了使螺杆能吸、排油口分隔開來，螺杆的螺紋段的長度至少要大于一個導程。Due to the mutual engagement of each screw and screw and the close coordination of the liner wall, between the inlet and outlet of the pump, can be divided into one or more of the sealed space.With the rotation of the screw and the meshing, the sealed space in pump suction side form unceasingly, the liquid from the suction chamber seal in among them, and the suction chamber along the screw axial continuously goes on to the discharge end, will be closed in the space of the liquid discharge, like a nut in screw rotation being constantly move forward, the screw thread turns as liquid, when screw rotating screw rotation is equivalent to the liquid in the inside of the screw pump, this is the basic work principle of screw pump.The sealing surface between screw and shell is a space curved surface.Exist on the surface of the sealing section, such as ab or DE and screw groove part of the form many the gap of the triangle ABC, def.These triangular gap formation fluid channels, make active screw groove with A driven screw groove on the connected to B and C.And groove B, C and along their spiral around to the back, and, respectively, and on the back of the groove connected to D and E.Due to the tank D, E and F (it belongs to another head spiral) of corresponding seal surface, there are also similar to the positive triangle gap a 'b' c ', so D, F, E will also is same.So, grooves ABCDEA on forming a "up" form of the sealed space (such as using single thread, axial disc groove will arrange spare screw, connecting the suction PaiKou, unable to form a seal).It is not hard to imagine that in this kind of screw, will form a number of independent "up" form sealed space, each of the sealed space occupied the axial length equals the tired stem lead t.Therefore, in order to make the screw suction and discharge of oil can be separated, the length of the screw thread of at least than a lead. 螺杆泵(船用柴油機噴油泵)有以下優點：1)壓力和流量範圍寬闊。壓力約在3.4-340千克力/cm 2，流量可達18600cm3/分；2)運送液體的種類和粘度範圍寬廣；3)因為泵内的回轉部件慣性力較低，故可使用很高的轉速；4)吸入性能好，具有自吸能力；5)流量均勻連續，振動小，噪音低；6)與其它回轉泵相比，對進入的氣體和污物不太敏感； 7)結構堅實，安裝保養容易。rate of up to 18600 cubic cm/min;2) wide range of delivery and type of liquid viscosity;3) because the rotary inertia force component inside the pump is low, so it can be used in high speed;4) inhalation can good, have since 螺杆泵的缺點是，螺杆的加工和裝配要求較高；泵的性能對液體的粘度變化比較敏感。Screw pump has the following advantages: 1) the wide range of pressure and flow.Pressure about 3.4-340 kg/cm 2, flow Suction capacity;5) flow uniformly continuous, little vibration, low noise;6) compared with other rotary pump, less sensitive to enter gas and dirt;7) solid structure, installation and maintenance easy.The screw pump's disadvantage is that the screw processing and assembling the demand is higher;The performance of the pump is more sensitive to the viscosity of the liquid change. 螺杆泵具有以下優點：1．和離心泵相比螺杆泵無需安裝閥們流量是穩定的線性流動;2． 和柱塞泵相比螺杆泵具有自吸能力強、吸入高度強;3．和隔膜泵相比螺杆泵可輸送各種混合雜質含有氣體及固體顆粒或纖維的介質，也可輸送各種腐蝕性物質;4． 和齒輪相比，螺杆泵可輸送高粘度的物質;5．和柱塞泵，隔膜泵及齒輪泵不同的是，螺杆泵可用于藥劑填充和計量.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 gear, 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.
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