Special lecture on moving equipment "Pump", learn some knowledge every day (14) Mixed flow pump "enrich yourself"”

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This post was last edited by A-Dai Amu on 2013-12-12 12:30 in order to allow everyone to come to discuss more actively and learn more actively.* , where the top five sofas each time will receive "learning * "Positive rewards" Some people may think that they have nothing to do during the day at work, working like a handyman, not knowing what to do, not knowing what to study, day after day, year after year, and unable to see their future. What a terrible thing it is! We must work hard from now on, even if we learn every day * A little bit of knowledge will add up to a lot, and enrich yourself. Now you have to clarify your goals. Only by enriching your brain first can you enrich others. . . . . . Just spend a few minutes a day and you will see the future! ! ! (Anyway, I have learned it. Whether you learn it or not is up to you, except for those who know how to do it, like Haichuan Dana. . . ) Without further ado, let’s start from the basics today~~! I have opened the topic post for so many days, everyone has benefited a lot, thank you for your support~~! Welcome everyone to come and listen. I have already broadcasted. I hope that people like me who want to gain knowledge every day will listen. Let’s learn together every day. * , discuss~~! Everyone has asked a lot of questions in the past few days, and I will try my best to answer them one by one. Maybe I have never encountered some of them, but there are still many capable people in our district who can answer them for you @Ahdaiamu @hcwang12345 @一pot香茗@tjdxz @ Advantage Stay @新葡玩海川 @lovestory @Mantianyun @zhaoqingsheng I opened the axial flow pump yesterday, and I believe that Haiyou friends have a certain understanding of the axial flow pump~~! In the future, I will try my best to make the knowledge as detailed and small as possible to make it easier for everyone to learn. * ~~! Today I will explain to you about mixed flow pumps. Mixed flow pumps can usually be divided into two types: volute type and guide vane type according to their different pressure water chambers. In appearance, the volute type is similar to a single-suction centrifugal pump, and the guide vane type is similar to a vertical axial flow pump. The working principle of the mixed flow pump impeller is a transitional form between the centrifugal pump and the axial flow pump. Guide vane mixed flow pump performance range: Flow rate: 1300~100000m3/h Lift: 5~30m Diameter: 350~3000mm It uses the centrifugal force and thrust generated by the rotation of the impeller to work together, and flows out obliquely. It is also called an oblique flow pump. There are two types: worm type (horizontal type) and guide vane type (vertical type). It has the advantages of both centrifugal pumps and axial flow pumps. It has a simple structure, a wide efficient area, and is easy to use. It is suitable for farmland drainage and irrigation pumping stations in plain polder areas. Among the mixed-flow pumps developed in China, the volute type has a head of 5 to 12m and a flow rate of 900 to 4000m3/h. ； The lift of the guide vane type is 3~25.7m, and the flow rate is 45~20160m3/h. Two guide vane pumps installed at Zaohe Pumping Station in Suqian County, Jiangsu Province. The impeller diameter is 5.7m, the flow rate is 80~100m3/s, the head is 6~12m, the rotation speed is 75r/min, the maximum efficiency is 92.1%, and the supporting power is 7000kW. It is one of the large-scale mixed flow pumps put into operation in the world. Mixed-flow pumps are one of the key technological developments in the international pump industry. It will partially replace centrifugal pumps and axial flow pumps. In Japan, the Soviet Union, Australia and other countries, the maximum efficiency of mixed-flow pumps reaches or exceeds 90%. Model flow rate m3/h lift m power kW 150HW-5 mixed flow pump 180 5 4 150HW-8 mixed flow pump 180 8 5.5 150HW-12 mixed flow pump 180 12 11 200HW-5 mixed flow pump 360 5 7.5 200HW-8 mixed flow pump 360 8 11 200HW-I2 Kun flow pump 360 12 18.5 250HW-5 mixed flow pump 540 5 11 250HW-8 mixed flow pump 540 8 18.5 250HW-12 mixed flow pump 540 12 30 300HW-5 mixed flow pump 792 5 18.5 300HW-8 mixed flow pump 792 8 22-30 300HW-12 mixed flow pump 792 12 30 400HW-5 mixed flow pump 1440 5 30 400HW-8 mixed flow pump 1440 8 45 400HW-12 mixed flow pump 1440 12 55 500HW-7 mixed flow pump 2340 7 75 500HW-11 mixed flow pump 2340 11 90 700HW-11 mixed flow pump 3650 11 155 2.5ZPW-12 self-priming impurity sewage pump 17.5-36 10.3-12.5 2.2 After watching the lecture, do you also have an understanding of mixed-flow pumps? Come on, learn some knowledge every day, enrich yourself, and let the little bits merge into a sea~~~! The following is the special lecture "Pump" of my special series of dynamic equipment. 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Please support, listen and discuss ； If you have any directions that need introduction, please contact me. If there are many requests, I will make a special post to explain~~! :) Welcome everyone to come and listen. I have already broadcasted. I hope that people like me who want to gain knowledge every day will listen. Let’s learn together every day. * , discuss~~!