耐酸泵的选型窍门

译文：
耐酸泵应如何选型呢？这里是有窍门的，首先要看您是输送什么酸，下面为您介绍几种常见耐酸泵的选型方法： 1、盐酸 用泵 常用的盐酸的最高浓度为38%，所以，盐酸用泵基本上只要是过流部件材质为塑料就行了，但如果从使用寿命、性价比等方面来考虑的话，可以选用FSB氟合金离心泵或CQB-F磁力泵，这二种泵的价格、性能都令人满意。 2、硫酸 用泵 硫酸用泵分为稀硫酸用泵与浓硫酸用泵，前者可选范围较大，稀硫酸泵可以选工程塑料泵、陶瓷泵、或F46泵、F26泵，后者（浓硫酸泵）只能选择氟塑料（F46）泵了，因为浓硫酸会腐蚀普通的工程塑料，而氟塑料则不会被腐蚀。还要注意的是浓硫酸的密度较高，选泵的时候电机功率要注意配大，简单的算法为“轴功率”*1.84即为输送浓硫酸时的轴功率。 3、氢氟酸 氢氟酸的腐蚀性非常强，建议选用氟塑料磁力泵，（且一定要将该系列泵的陶瓷件换成耐氢氟酸的材料） 4、硝酸 硝酸输送泵也建议选用氟塑料磁力泵，且橡胶密封圈要换成四氟材质的。 5、醋酸 它是有机酸中腐蚀性最强的物质之一，普通钢铁在一切浓度和温度的醋酸中都会严重腐蚀，不锈钢是优良的耐醋酸材料，含钼的316不锈钢还能适用于高温和稀醋酸蒸汽。对于高温高浓醋酸或含有其它腐蚀介质等苛刻要求时，可选用高合金不锈钢或氟塑料磁力泵。如CQB磁力泵、CQ316L不锈钢磁力泵 6、盐水(海水） 普通钢铁在氯化钠溶液和海水、咸水中腐蚀率不太高，一般须采用涂料保护；各类不锈钢也有很低的均匀腐蚀率，但可能因氯离子而引起局部性腐蚀，通常采用316不锈钢较好，但其价格较高，建议选用氟塑料离心泵，如IHF化工离心泵。 7、密封 密封形式：磁力泵为静密封形式，故可以不用考虑密封性了，离心泵一般采用外装式波纹管机械密封，其耐腐耐磨性均较好，如输送的介质含有颗粒，则可采用硬对硬机械密封。

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原文：
Selection of acid pump how do? Here is a trick, first of all depends on what you are conveying acid, here to introduce you to some common acid-resistant pump selection methods: 1, hydrochloric acid pump Used the maximum concentration of hydrochloric acid 38%, so, basically as long as hydrochloric acid pump materials of overflow components for the plastic Jiu the line, but if from life, cost and so on to Kaolv of Hua, Keyixuanyong FSB fluorine He Jin Lixinbenghuo CQB -F magnetic pump, the price of these two kinds of pump performance Pneumatic And Electric Diaphragm Pumpsto be satisfactory. 2, sulfuric acid pump Into sulfuric acid pump pump pump with concentrated sulfuric acid, the former optional large range of dilute sulfuric acid pump can choose plastic pump, ceramic pumps, pump or F46, F26 pump, the latter (sulfuric acid pump) can only Select fluorine plastic (F46) pump, for concentrated sulfuric acid will corrode common engineering plastics, while the fluorine plastic will not corrode. Also note that the higher the density of sulfuric acid, when selecting a pump motor power to pay attention with big, simple algorithm for the "shaft power" * 1.84 shall be conveying shaft power when concentrated sulfuric acid. 3, hydrofluoric acid Corrosive hydrofluoric acid is very strong, and suggested the use of fluorine plastic magnetic pump (and the series of pumps must be replaced with ceramic parts hydrofluoric acid-resistant material) 4, nitrate Also suggested the useStainless Teel Diaphragm Pump of nitric acid pump fluorine plastic magnetic pumps, and rubber seals should be replaced with PTFE material. 5, acetic acid It is the most corrosive substances in organic acids, one of ordinary steel in all the acetic acid concentration and temperature will be severe corrosion, acid-resistant stainless steel is an excellent material, 316 stainless steel containing molybdenum can also apply to high temperature and dilute acetic acid vapor . For the high temperature and high concentration of acetic acid, or contain other corrosive media such stringent requirements may make use of high alloy stainless steel or fluorine plastic magnetic pump. If CQB Magnetic Pump, CQ316L stainless steel magnetic pump 6, salt water (sea water) Ordinary steel in sodium Engineering Plastic Diaphragm Pumpchloride solution and sea water, salt water corrosion rate is not high, are generally required to use paint protection; all kinds of stainless steel has a very low corrosion rate, but may be due to localized corrosion caused by chloride ions, usually 316 stainless steel better, but its price is higher, suggested the use of fluorine plastic centrifugal pump, chemical pump, such as IHF. 7, sealing Seal Type: magnetic pump for the static seal form, it can not consider the seal, and centrifugal pumps generally use the externally mounted bellows mechanical seal, the corrosion wear resistance are better, such as the transport medium containing particles can be used hard mechanical seal on the hard.