渣浆泵的原动机选择
一、原动机的类型

泵的原动机类型选择一般可根据其动力来源、工厂或装置的能量平衡环境条件、调节控制要求及经济效益等条件进行综合考虑来确定。泵的原动机类型常用的有以下几种:

(1)电动机。具有结构简单、运行可靠、经济、寿命长、维护方便、价格便宜、体积小、启动操作简单等特点。所以使用最为广泛，凡有电网的地方都首选电动机作为原动机。

(2)汽轮机。只有在有蒸汽源的场合下使用，常为改善工厂的蒸汽平衡而使用。它适用于大中型泵中，具有可调速，防爆防燃下工作并可用于无电或停电情况下使用。

(3)蒸汽机。只有在有蒸汽源的场合下使用，它的体积大、效率低、转速低，目前已很少使用，只有在特定的场合下使用。

(4) 内燃机。包括汽油机、柴油机、燃气轮机。一般在无电、停电或移动使用场合下使用，其相对体积较大，结构复杂，寿命短，不但购置成本高，运行维修成本也很高，所以只有在无电、移动情况下使用，常作为紧急停电的应急备用泵的原动机。

(5)液力透平。常在为了循环液体动力回收情况下使用，可以节省动力。

由于电动机本身的优点，以及目前电网的普及，所以使用最为广泛，本书将详细阐述电动机的选择。渣浆泵厂家

Prime mover selection of slurry pump

I. types of prime movers

The type of prime mover of the pump can be generally determined by comprehensive consideration of its power source, energy balance environmental conditions of the plant or device, regulation and control requirements, economic benefits and other conditions. There are several types of prime movers commonly used for pumps:

(1) motor. The utility model has the advantages of simple structure, reliable operation, economy, long service life, convenient maintenance, low price, small volume, simple starting operation, etc. Therefore, the most widely used, where there is a power grid, the motor is preferred as the prime mover.

(2) steam turbine. It can only be used when there is steam source. It is often used to improve the steam balance of the plant. It is suitable for large and medium-sized pumps, with adjustable speed, explosion-proof and flame-proof, and can be used in case of no power or power failure.

(3) steam engine. It is only used in the case of steam source. It has large volume, low efficiency and low speed. It is rarely used at present, and only used in specific occasions.

(4) internal combustion engine. Including gasoline engine, diesel engine and gas turbine. Generally, it is used in the situation of no power, power failure or mobile use, with relatively large volume, complex structure and short service life, not only high purchase cost, but also high operation and maintenance cost. Therefore, it is only used in the situation of no power, mobile use, often as the prime mover of emergency standby pump for emergency power failure.

(5) hydraulic turbine. Often used in order to recycle liquid power, it can save power.

Due to the advantages of the motor itself, as well as the popularity of the current power grid, so the most widely used, this book will elaborate on the selection of the motor. Slurry pump manufacturer