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鼓风机是一种使用普遍的流体机械,广泛应用于污水处理、气力输送、化工、水泥、钢铁冶金等领域。鼓风机种类较多,在鼓风机选型中,需要根据应用的不同,针对性的选择适合的鼓风机种类。今天螺杆鼓风机厂家就和大家谈一谈鼓风机选型中离心鼓风机与螺杆鼓风机的主要区别。

Blower is a widely used fluid machinery, widely used in sewage treatment, pneumatic conveying, chemical industry, cement, iron and steel metallurgy and other fields. There are many kinds of blowers. In the selection of blowers, it is necessary to select the suitable types of blowers according to different applications. Today, screw blower manufacturers and you talk about the main differences between centrifugal blower and screw blower in blower selection.

一、原理不同

1、 The principle is different

鼓风机因结构原理的不同,主要分为容积式与透平式。容积式又可分为往复式、回转式等;透平式可分为离心式、轴流式与混流式。

Due to the different structure and principle, blowers are mainly divided into volume type and turbine type. The volume type can be divided into reciprocating and rotary type; the turbine type can be divided into centrifugal type, axial flow type and mixed flow type.

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螺杆鼓风机属于容积式鼓风机,通过一对啮合的转子,相向高速转动,利用其齿间容积的周期性变化实现气体压缩并输送到管网;离心鼓风机是透平式鼓风机,它是根据能量转换的原理,利用高速旋转的叶轮将气体加速,然后减速、改变流向,使动能转换成势能(压力)。

Screw blower belongs to displacement type blower. Through a pair of meshing rotors, it rotates at high speed in opposite direction, and realizes gas compression and transportation to pipe network by periodic change of volume between teeth; centrifugal blower is turbine type blower, which is based on the principle of energy conversion, The high-speed rotating impeller accelerates the gas, then decelerates and changes the flow direction to convert kinetic energy into potential energy (pressure).

二、风量不同

2、 The air volume is different

螺杆鼓风机风量一般≦100m3/min,通过变频系统控制转速可实现20-100m3/min之间的风量调节,适用于小流量需求场合,区间内稳定性、使用成本、维护等方面具有优异性价比。

Generally, the air volume of screw blower is less than or equal to 100m3 / min, and the air volume can be adjusted between 20-100m3 / min through the speed control of frequency conversion system, which is suitable for the occasions with small flow demand, and has excellent performance price ratio in terms of stability, operation cost, maintenance, etc.

离心鼓风机可以实现高转速、大风量。多级低速离心鼓风机在100-400m3/min流量区间具有较高性价比;单级高速离心鼓风机则在400m3/min以上更具性价比,适合大流量且流量稳定的场合。

Centrifugal blower can achieve high speed and large air volume. The multi-stage low-speed centrifugal blower has high cost performance in the flow range of 100-400m3 / min; the single-stage high-speed centrifugal blower has more cost-effective performance than that of the single-stage high-speed centrifugal blower, which is suitable for large flow and stable flow occasions.

三、适用场合不同

3、 Different applications

如果负载需要的是恒流量效果,适用于螺杆鼓风机。螺杆鼓风机属于恒流量风机,工作的主参数是风量。输送的风量与其转数成比例,转数一定的情况下,输出的压力可随管道和负载的变化而变化,而压力变化时,风量变化很小。

If the load needs constant flow effect, it is suitable for screw blower. Screw blower belongs to constant flow fan, the main working parameter is air volume. The output pressure can change with the change of pipeline and load, but the change of air volume is very small when the pressure changes.

如果负载需要恒压效果,则适用于离心鼓风机。离心鼓风机属于恒压风机,工作的主参数是风压,输出的风量随管道和负载的变化而变化,风压变化不大。

If the load needs constant pressure effect, it is suitable for centrifugal blower. Centrifugal blower belongs to constant pressure fan, the main working parameter is wind pressure, the output air volume changes with the change of pipeline and load, and the wind pressure changes little.


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