地下室设计了卫生间，厨房，洗衣房等有用水需求的场所，就需要用污水提升泵来进行排水，完善我们的地下室排水系统，那么，作为污水提升泵的核心装置—电机，我们今天来从电机的位置，电机的转速，密封方式，外壳材质，散热方式和电机控制形式来分析一下污水提升泵的电机。

The basement is designed with toilets, kitchens, laundries and other places with water demand, so we need to use the sewage lift pump to drain water and improve our basement drainage system. Then, as the core device of the sewage lift pump - motor, today we will start from the position, speed, sealing mode and shell material of the motor, Heat dissipation mode and motor control form to analyze the motor of sewage lifting pump.

污水提升泵中电机的位置一般就两种，内置和外置，内置是指电机位于机器水箱的内部，与污水进行直接的而解除，外置就是处于水箱的外部，不与污水进行直接的接触，相比内置泵而言，外置泵对于技术的要求，装配精度以及密封性要求更高，因而造价更高，并且外置泵在后期的维护方面更加方便，只需在外部检查电机即可，无需打开箱体接触污水，并且外置泵箱体密封效果会更好，对于异味的散发和蚊虫的滋生方面防护的更好。

There are generally two positions of the motor in the sewage lifting pump, built-in and external. The built-in refers to that the motor is located inside the machine water tank and is directly released from the sewage. The external is located outside the water tank without direct contact with the sewage. Compared with the built-in pump, the external pump has higher requirements for technology, assembly accuracy and sealing, so the cost is higher, Moreover, the external pump is more convenient in the later maintenance. It only needs to check the motor externally without opening the box to contact the sewage. Moreover, the sealing effect of the external pump box will be better, and the protection against the emission of peculiar smell and the breeding of mosquitoes will be better.

电机转速就是指电机的额定转速，是指额定功率下的转速，在转矩相同的情况下，转速越快，机器做功越快，那同一时间内，机器做的功就多，机器的效率就高，而机器的效率是电机产品的重要性指标，特别在国家节能减排政策的导向下，高效节能电机逐步成为一种趋势，像是泽德采用德国EMGR电机，电机材料利用率高，消耗在材料中的发热损耗也相对较少，泽德的电机转速分为两种，四级电机的1转和二级电机2800转，转速越高，能将水提升的高度也就越高，但是这也并不是说明转速越快越好，在满足扬程(输出功率相同)的前提下，转速低的，能效比高，声音小，对于机器的使用寿命更有益处。

Motor speed refers to the rated speed of the motor, which refers to the speed under the rated power. Under the same torque, the faster the speed, the faster the machine does work. At the same time, the more work the machine does, the higher the efficiency of the machine. And the efficiency of the machine is an important index of motor products, especially under the guidance of the national energy conservation and emission reduction policy, High efficiency and energy-saving motors have gradually become a trend. For example, Zeder adopts German emgr motor, which has high material utilization rate and relatively less heat loss consumed in materials. Zeder's motor speed is divided into two types: one revolution of four-stage motor and 2800 revolutions of two-stage motor. The higher the speed, the higher the height of water lifting, but this does not mean that the faster the speed, the better, On the premise of satisfying the head (the same output power), low speed, high energy efficiency ratio and low sound are more beneficial to the service life of the machine.

一般电机的密封方式都会采用机械密封的形式，让机器在运行的时候也保持电机与水的分离，避免二者短兵相见导致的机器失灵，但是，现在市面上也会有价格较高的产品，它们除了采用传统的机械密封外，还会加一个双重保护，就是油腔密封，就是在机械密封的外层放置一些矿物质油，让运转沉浸在油中，起到润滑和密封的双重作用，并且在机械密封产生问题的时候，还能起到对电机的保护作用，这样的双重保险也就奠定了其价格的高位。

Generally, the sealing method of the motor will adopt the form of mechanical seal, so that the machine can keep the separation of the motor and water during operation, so as to avoid the machine failure caused by the short encounter between the two. However, there will also be products with higher prices on the market. In addition to the traditional mechanical seal, they will also add a double protection, namely oil cavity seal, It is to place some mineral oil on the outer layer of the mechanical seal to immerse the operation in the oil, which plays a dual role of lubrication and sealing, and can also play a protective role for the motor when the mechanical seal has problems. Such dual insurance has also laid a high price.

电机外壳顾名思义就是包裹着电机的一层保护套，它的材质对于电机的运行性能起着重要的作用。现在市面上电机外壳的材质分为：塑料，不锈钢，铸铁和铸铝合金这四种，四者在价格方面的优势如下：塑料不锈钢铸铁铸铝合金，而作为电机的外壳重要的就是帮助电机散出电机在工作时产生的巨大的热量，而四者的散热性能如下塑料(导热系数0.17-0.5左右)不锈钢(导热系数16-20左右)铸铁(导热系数42-90左右)铸铝合金(导热系数138-147左右)，这就很直观的看出铸铝合金材质的电机外壳是胜在了哪里。

As the name suggests, the motor shell is a protective sleeve wrapped around the motor. Its material plays an important role in the operation performance of the motor. At present, the materials of motor shell on the market are divided into plastic, stainless steel, cast iron and cast aluminum alloy. The price advantages of the four are as follows: plastic, stainless steel, cast iron and cast aluminum alloy. As the shell of motor, it is important to help the motor dissipate the huge heat generated by the motor during operation, The heat dissipation performance of the four is as follows: plastic (thermal conductivity of about 0.17-0.5), stainless steel (thermal conductivity of about 16-20), cast iron (thermal conductivity of about 42-90) and cast aluminum alloy (thermal conductivity of about 138-147), which intuitively shows where the motor shell made of cast aluminum alloy wins.

一般我们看见的电机外壳都是光滑的，这种基本就是要依靠材质的本身的散热性或是放置在有水的环境中来排出电机工作时产生的大量的热量，但是也有一些价格较高的外置泵机器会把电机外壳的表面做成鳍翼状，这样就增加了其与空气的接触面积，使得散热效果增加两倍以上，保证电机在干式运转的情况下，也能有良好的散热性能，这样会使得机器的运行更加稳定。

Generally, the motor shell we see is smooth. This basically depends on the heat dissipation of the material itself or placed in the environment with water to discharge a large amount of heat generated during the operation of the motor. However, some expensive external pump machines will make the surface of the motor shell into fin wing shape, which increases its contact area with the air, The heat dissipation effect is more than doubled to ensure that the motor can also have good heat dissipation performance under the condition of dry operation, which will make the operation of the machine more stable.

现在我们看见的市面上的污水提升泵的控制形式就是两种，一种是小型机器的集成电路板，整个控制系统就是在机器的内部，一般处于电机的上面，这个电路板就相当于是机器的大脑，机器的启停全靠它来控制;另一种就是大型机器中的控制器，这种一般会将机器和控制器分开来，控制器是单独的一个设备，并配置液晶屏，可以控制机器的启停液位和报警液位，可以对机器的各种参数进行调节，更加智能，因而造价当然也就更贵，像是泽德Kompaktboy和ZPG雨水泵系列配置的ZPS控制器，内置强大的MCU芯片，除了调节水位外，还能了解机器的运行时间，启动次数，电流，维护周期等参数，非常便携。

Now we can see that there are two control forms of sewage lift pump on the market. One is the integrated circuit board of small machine. The whole control system is inside the machine, usually above the motor. This circuit board is equivalent to the brain of the machine, and the start and stop of the machine are controlled by it; The other is the controller in large machines, which generally separates the machine from the controller. The controller is a separate device and is equipped with LCD screen, which can control the start and stop liquid level and alarm liquid level of the machine, and can adjust various parameters of the machine. It is more intelligent, so the cost is certainly more expensive, For example, the Zps controller of Zede kompaktboy and ZPG rainwater pump series is equipped with a powerful MCU chip. In addition to adjusting the water level, it can also understand the running time, starting times, current, maintenance cycle and other parameters of the machine. It is very portable.

所以说，一台机器的价格贵在哪里，从电机的这些方面就能窥见一些，当然，我们还是要根据自身情况来选择适合的机器。

Therefore, the price of a machine can be seen from these aspects of the motor. Of course, we still have to choose the appropriate machine according to our own situation.