八种泵型比较

Prepare a word to compare the properties and application range of different pump.
Pneumatic ejector(气动喷射泵); torque flow pumps （旋流泵）;Plunger（柱塞泵）; centrifugal（离心泵）; diaphragm(隔膜泵）; progressive cavity （螺杆泵）; rotary lobe（凸轮转子泵）; chopper hose （带切碎软管泵）
1、Pneumatic ejector
The properties and application：
Use of Jet（喷射）of high pressure working fluid transmission fluid pump，which constituted by the nozzles（喷嘴）, mixing rooms and expansion tube。

Working fluid at high pressure through the nozzle at high speed when shooting, mixed indoor generate low voltage(低压), the transported fluid was soaked in the mixing room, with which the working fluid is mixed together into a wider tube.
In the expanded tube, fluid pressure is increasing; and then discharge from the tube. According to the working fluid,the pump include the steam jet pump and water jet pump. Simple structure, easy to use .But head of small,and inefficient, transmission fluid and working fluid mixing and dilution（稀释）. So the scope of the application is limited, for the chemical industry and power engineering.
气动喷射泵
•利用高压工作流体的喷射作用来输送流体的泵，由喷嘴、混合室和扩大管等构成。

工作流体在高压下经过喷嘴以高速度射出时，混合室内产生低压，被输送的流体被吸入混合室，与工作流体相混，一同进入扩大管。

在经过扩大管时，流体的压力又
逐渐上升；然后排出管外。

•根据所用的工作流体，一般分为蒸汽喷射泵（steam jet pump）和水喷射泵（water jet pump）两类。

构造简单、使用方便。

但
产生压头小，效率低，且被输送的流体因与工作流体相混而被
稀释，使其应用范围受到限制。

用于化学工业和动力工程等方
面。

2、torque flow pumps
The properties and application：
The working principle is when the impeller（叶轮）rotates medium under the effect of the centrifugal force（离心力）energy increases, enter the leaves between the medium by the push of the blade together with the impeller motor.Medium in circulation flow under the action of obtain energy, most does not pass through the impeller, and in the vaneless cavity movement （无叶腔运动）after the pump outlet, thereby conveying complex medium or fluid containing impurities to.
Non blocking performance. Good wear resistance. Have good
anti-cavitation （抗蚀）formance.And hydraulic loss is big.
Used for pumping in complex medium or fluid containing impurities（杂质）, such as garbage, containing short fiber material or feces of two-phase fluid（两相流体）.
旋流泵
•旋流泵的工作原理是当叶轮旋转时介质受离心力的作用能量增加，进入叶片间的介质受叶片的推动与叶轮一起运动。

介质在循环流的作用下获得能量，绝大部分不经过叶轮，而在无叶腔内运动后经泵出口排出，从而达到输送复杂介质或含杂质流体的目的。

•无堵塞性能好,耐磨性好,抗蚀性能好，水力损失较大。

旋流泵多用于抽送复杂介质或含杂质流体，如含垃圾、短纤维物质或粪便的两相流体。

3、Plunger pump
The properties and application：
Plunger pump is a hydraulic system is an important device.It relies on the piston in the cylinder reciprocating motion, so that the sealing cavity volume changes to realize oil, oil pressure. Oil pumping process can be divided into the following three stages ：inlet,supply, return.
Plunger pump products are widely used in petroleum exploration and development evaluation experiment, petrochemical catalytic reaction （催化反应）, polymerization（聚合反应）, food, pharmaceutical（制药）, liquid chromatography（色谱）analysis.
柱塞泵结构图：
柱塞泵结构图：
柱塞泵
•柱塞泵是液压系统的一个重要装置。

它依靠柱塞在缸体中往复运动，使密封工作容腔的容积发生变化来实现吸油、压油。

泵油过程可分为以下三个阶段：进油,供油,回油.
•柱塞泵产品广泛应用于石油勘探开发评价实验、石油化工的催化反应、聚合反应、食品、制药、液相色谱分析等.
4、Centrifugal pump
The properties and application：
Centrifugal pump of the main components are water absorbing chamber, an impeller and a water pressure chamber，impeller is the most important component. High speed rotation of the impeller blades to drive the rotation of the water, water thrown, so as to achieve the purpose of conveying.
The pump's actual (effective) the pressure head and flow rate are lower than the theoretical value is low;and input pump power compared with the theoretical value is high. And the working points with flow regulation are the keys in function.
Centrifugal pump can be widely used in electric power, metallurgy(冶金), coal, building materials industries such as transport of solid particles in the slurry（浆液）. Hydraulic ash fire power plant, metallurgical beneficiation.
离心泵的气缚现象
离心泵发生汽蚀是由于液道入口附近某些局部低压区处的压力降低到液体饱和蒸汽压，导致部分液体汽化所致。

离心泵
•离心泵的主要过流部件有吸水室、叶轮和压水室。

叶轮是泵的最重要的工作元件。

高速旋转的叶轮叶片带动水转动，将水甩
出，从而达到输送的目的。

泵的实际（有效）压头和流量均较理论值为低，输入泵的功率较理论值为高.其工作点和流量调节是运行的关键。

•离心泵可广泛用于电力、冶金、煤炭、建材等行业输送含有固体颗粒的浆体.如火电厂水力除灰、冶金选矿。

5、Diaphragm pump
The properties and application：
By accepting conditioning control unit outputs a control signal, with the aid of the power operation to change the fluid flow, is a reciprocating diaphragm deformation caused by the volume change volume pump，its working principle is similar to piston pump.
Diaphragm pumps have the following characteristics:the self suction function、Liquid containing particles can be、flow regulation、Small volume, light weight, convenient to move .
Diaphragm pump is a new type of transport machinery, can transport all kinds of corrosive liquid, with particles of liquid, high viscosity（高粘度）, volatile, flammable（易燃）, poisonous liquid. in the painting, ceramics in the diaphragm pump has occupied a dominant position.
隔膜泵
•隔膜泵通过接受调节控制单元输出的控制信号，借助动力操作去改变流体流量。

是一种由膜片往复变形造成容积变化的容积
泵，其工作原理近似于柱塞泵。

隔膜泵具有以下特点:自吸功能、可以通过含颗粒液体、流量调节、体积小、重量轻，便于移动等。

•隔膜泵是一种新型输送机械，可以输送各种腐蚀性液体，带颗粒的液体，高粘度、易挥发、易燃、剧毒的液体。

在喷漆、陶瓷业中隔膜泵已占有绝对的主导地位。

6、progressive cavity pump
The properties and application：
pump is rely on pump body and screw by the formation of the meshing space volume change and mobile to transport the liquid or the pressurization of the rotary pump.The main working parts is eccentric screw (rotor) and fixed bush (stator). Because the two parts of the special geometry, which form a separate seal let cavity, medium by axial uniform implementation of the flow, the internal flow rate is low, the volume remains unchanged, the pressure stability, and won‘t produce eddy current and agitation（搅动）.
Pressure and flow range wide.Aspiration is good, has the self-priming ability.Because of its screw pump have variable delivery, self-priming ability, reversible, can transport containing solid particles of liquid etc., in the sewage treatment plant, widely used in conveying water, wet sludge and flocculating agent solution aspects.
螺杆泵外形
螺杆泵
•螺杆泵是依靠泵体与螺杆所形成的啮合空间容积变化和移动来输送液体或使之增压的回转泵。

其主要工作部件是偏心螺杆（转子）和固定的衬套（定子）。

由于该二部件的特殊几何形状，分别形成单独的密封容腔，介质由轴向均匀推行流动，内部流速低，容积保持不变，压力稳定，因而不会产生涡流和搅动。

•压力和流量范围宽，吸入性能好，具有自吸功能。

螺杆泵因其有可变量输送、自吸能力强、可逆转、能输送含固体颗粒的液体等特点，在污水处理厂中，广泛地被使用在输送水、湿污泥和絮凝剂药液方面
7、Rotary lobe pump
The properties and application：
Also called roots pump, and depend on two synchronous reverse rotation of the rotor in the rotation process in inlet produce suction (vacuum), thus suction to transport material.May transport the vapor and liquid, solid three-phase flow mixed material.High efficiency and energy saving, conveying smooth, low noise.But Self suction is low than gear screw pump.
Rotary lobe pump is widely used in petroleum chemical industry, fine chemical industry, daily chemical, pharmaceutical, food, environmental protection, papermaking, coating, metallurgical（冶金）and other industries .
罗茨泵工作原理及外形
罗茨泵
•凸轮转子泵也叫罗茨泵，依靠两同步反转动的转子在旋转过程中于进口处产生吸力(真空度)，从而吸入所要输送的物料。

可以输送汽固液三相混合物料，高效节能，输送平稳，噪音低，但是自吸力不及齿轮螺杆泵。

•凸轮转子泵广泛应用于石油化工、精细化工、日用化工、制药、食品、环保、造纸、涂料、冶金等行业。

8、chopper hose pump
The properties and application：
Hose pump belongs to the category of peristaltic pump（蠕动泵）.It has no valve, no seal, with medium contact the only components of the inner cavity is rubber hose, compression hose rotor is totally independent of medium outside.Hose pump has better self-priming ability, almost can produce perfect vacuum to suction fluid.
Hose pump delivery gas liquid, foam liquid without gas resistance; Conveying high viscosity（粘度）, shear sensitivity medium is also strengths. Widely used in gold smelting, non-ferrous metallurgy, chemical industry, mining, food processing, brewing, ceramics（陶瓷）, water treatment and other industries.
带切碎软管泵
•软管泵属于蠕动泵的范畴。

它无阀、无密封，同介质接触的唯一部件是橡胶软管的内腔，压缩软管的转子完全独立于介质之
外。

软管泵具有更好的自吸能力，几乎可以产生完美的真空来吸液。

•它可以输送含气液、泡沫液而无气阻；输送高粘度、剪切敏感性介质也是强项。

广泛应用于黄金冶炼、有色冶炼、化工、采矿、食品加工、酿造、陶瓷、水处理等行业。