自吸式不锈钢泵目前的发展趋势
从目前不锈钢泵的发展趋势来看，专用泵的比重将比通用泵更高。早在20世纪初，Mg公司就首次研制出了潜水排污泵，用于替代深井泵。随后，oz国家也相继发展起来，并不断完善和逐步完善。如DG煤矿使用的潜污泵2500多台，容量1600kw，扬程410m，我国的潜污泵是上世纪60年代开发的，其中地面潜污泵已用于南方农田灌溉，而中小型潜水泵已形成系列并批量投产。大容量、高电压的潜水泵、潜水电机也层出不穷。500～1200kw大型潜水泵已在矿山投入使用。
通常，用于泵送液体、输送液体和增加液体压力的机器统称为泵。从能量的角度看，自吸式不锈钢泵是一种能量转换机，它将原来设想的机械能转化为输送液体的能量，增加液体的流量和压力。泵一般用于从低洼处泵送液体，沿管道输送到高处。例如，我们每天看到的是从河流和池塘抽水灌溉农田，或从地下深井抽水到水塔。由于泵后液体的压力可以提高，所以也可以利用泵的作用将液体从压力较低的容器中泵出，克服沿程向压力较高的容器或其他需要的地方输送液体的阻力。例如，VAREM锅炉给水泵从低压水箱取水，向高压锅炉汽包供水。这台泵有多种功能。WaterSunny巨型泵的流量可达几十万in/h，微型泵的流量小于几十ml/h，压力比常压高达1000mpa。它输送的液体温度低至200℃，高达800℃。泵输送的液体种类繁多，可输送水（纯化水、污水等）、油、酸碱、乳状液、悬浮液、液态金属等，钛龙自吸不锈钢泵因其排污能力强、效率高、能耗高等优点，在生产工程中得到越来越广泛的应用省油、自吸性能好等优点。自吸式不锈钢泵不仅适用于城市环保、建筑、消防、化工、制药、染料印染、酿酒、电力、电镀、造纸、石油、矿山、设备冷却、油轮卸车等行业，也适用于清水、海水、酸碱性介质，粘度小于或等于100厘、含固量小于30%的化学介质液体和一般膏体浆料。
目前，国内自吸式不锈钢泵主要由国内厂家生产制造，少部分从国外进口。自吸离心泵由于其安装简单、占地面积小、维护方便、无噪声等优点，广泛应用于市政工程、工厂、商业、宾馆、住宅等污水排放。自吸离心泵的市场前景十分广阔。但污水泵的可靠性还需要进一步加强，因此提高自吸式不锈钢泵的技术含量是今后厂家的主要发展方向。针对自吸不锈钢离心泵存在的问题，国内部分厂家重点开发泵保护系统，当不锈钢泵运行异常时，自动切断电源。这种方法虽然能起到一定的效果，而且这种保护也是必要的，但并不是解决问题的根本途径。因此，我们必须着力提高泵的性能，从根本上解决问题。今后需要解决的问题是提高自吸不锈钢离心泵的可靠性，适应多种工作环境，优化其结构设计，进一步提高自吸离心泵的容量。
Current development trend of self-priming stainless steel pump
From the current development trend of stainless steel pump, the proportion of special pump will be higher than that of general pump. As early as the early 20th century, Mg company developed the submersible sewage pump for the first time to replace the deep well pump. Subsequently, oz countries have also developed and gradually improved. For example, more than 2500 submersible sewage pumps are used in DG coal mine, with a capacity of 1600kw and a lift of 410m. The submersible sewage pumps in China were developed in the 1960s. Among them, the surface submersible sewage pumps have been used for farmland irrigation in southern China, while the small and medium-sized submersible pumps have formed a series and put into production in batches. Large capacity, high voltage submersible pump, submersible motor also emerge in endlessly. 500-1200kw large submersible pump has been put into use in the mine.
Generally, the machines used to pump liquid, transport liquid and increase liquid pressure are collectively referred to as pumps. From the point of view of energy, the self-priming stainless steel pump is a kind of energy conversion machine, which transforms the mechanical energy originally envisaged into the energy of conveying liquid, increasing the flow and pressure of liquid. The pump is generally used to pump liquid from low-lying places, along the pipeline to high places. For example, what we see every day is pumping water from rivers and ponds to irrigate farmland, or from deep underground wells to water towers. Since the pressure of the liquid after the pump can be increased, the function of the pump can also be used to pump the liquid out of the container with lower pressure, so as to overcome the resistance of conveying liquid to the container with higher pressure or other places. For example, the varem boiler feed water pump takes water from the low pressure water tank to supply water to the high pressure boiler drum. This pump has many functions. The flow rate of watersunny giant pump can reach hundreds of thousands of in / h, and the flow rate of micro pump is less than tens of ml / h, and the pressure ratio is as high as 1000 MPa. The temperature of the liquid it transports is as low as 200 ℃ and as high as 800 ℃. There are many kinds of liquid transported by the pump, such as water (purified water, sewage, etc.), oil, acid and alkali, emulsion, suspension, liquid metal, etc. Self priming stainless steel pump is not only suitable for urban environmental protection, construction, fire control, chemical industry, pharmacy, dye printing and dyeing, wine making, electric power, electroplating, paper making, petroleum, mining, equipment cooling, tanker unloading and other industries, but also suitable for clean water, sea water, acid-base medium, chemical medium liquid with viscosity less than or equal to 100% and solid content less than 30% and general paste slurry.
At present, domestic self-priming stainless steel pumps are mainly manufactured by domestic manufacturers, and a small part of them are imported from abroad. Self priming centrifugal pump is widely used in municipal engineering, factory, business, hotel, residential sewage discharge due to its advantages of simple installation, small floor area, convenient maintenance and no noise. The market prospect of self-priming centrifugal pump is very broad. However, the reliability of sewage pump needs to be further strengthened, so improving the technical content of self-priming stainless steel pump is the main development direction of manufacturers in the future. In view of the problems of self-priming stainless steel centrifugal pump, some domestic manufacturers focus on the development of pump protection system. When the stainless steel pump runs abnormally, the power supply will be cut off automatically. Although this method can play a certain effect, and this kind of protection is also necessary, it is not the fundamental way to solve the problem. Therefore, we must focus on improving the performance of the pump and fundamentally solve the problem. The problem to be solved in the future is to improve the reliability of self-priming stainless steel centrifugal pump, adapt to a variety of working environments, optimize its structural design, and further improve the capacity of self-priming centrifugal pump.