Some customers have requirements for rotation parameters when consulting the rotary fan. In fact, the speed ratio of the fan affects the air volume. Why are the requirements for the speed ratio higher? Apart from the factors in the field, different speed ratios can meet the same working conditions. However, it is reasonable to choose the fan with the same speed ratio. The higher the speed ratio, the faster the fan will be damaged, and the shorter the service life.

会对大家开展型号选择要素有许多，如运输沼液、液化气等特殊气体，运输该类汽体要进行独特密封性，因此，如果你运输该类汽体，回转风机在生产时会有一定的不一样，密封方式层面会有一定的小差别。如活塞密封性、N4机封、H抽气密封、K单机封、G型充氮密封性等，不同类型的密封方式工程造价也不尽相同，因此，若您对于此事有一定的规定，罗茨鼓风机的构造方式上又会有一定的多元化。

There are many factors for model selection, such as transportation of special gases such as marsh liquor and liquefied gas. The transportation of this type of steam requires unique sealing. Therefore, if you transport this type of steam, the rotary fan will be different in production, and there will be certain small differences in sealing methods. For example, piston sealing, N4 mechanical seal, H extraction seal, K single seal, G type nitrogen filling seal, etc., the project cost of different types of sealing methods is also different. Therefore, if you have certain regulations on this matter, the construction methods of Roots blower will be diversified.

这一参数主要是针对特殊的消费者，常见的便是采用旋转风机的客户，自身旋转风机的噪音值就比罗茨风机的噪音值要低许多，因为有的特定行业须废水处理，比如：医院门诊，我们都知道医院的环境就是你要沉静，因此，噪音值这一参数就变得十分关键了。一般选购的客户针对噪音值并没什么规定，大部分用以工厂，生产环境自身噪声较多，罗茨鼓风机的特点便是：风量覆盖面广、压力覆盖面广、经济实用，但就是噪声不大好处理。如果要处理噪音污染，建议使用丝杆鼓风机。

This parameter is mainly aimed at special consumers. The common one is customers who use rotary fans. The noise value of their own rotary fans is much lower than that of Roots fans, because some specific industries require wastewater treatment, such as hospital outpatient services. We all know that the hospital environment is quiet, so the noise value is a key parameter. Generally, customers who choose to purchase do not have any regulations on the noise value. Most of them are used in factories. The production environment itself has a lot of noise. Roots blowers are characterized by wide air volume coverage, wide pressure coverage, economy and practicality, but the noise is not very good to deal with. If noise pollution is to be handled, it is recommended to use a screw blower.

其实还有很多客户来询回转风机时，都有特定知名企业风机，或是平时用过某一企业风机，现在要换一个生产厂家，因此，有时候知名企业也将成为一个选择的参数，如果你在网络上根据同类产品联系上了大家，请提前通知大家你需要特定知名企业，如旋转风机，能够会提供回转风机型号规格我们就能帮你们挑选出适宜你的风机，别的罗茨风机，给予型号与此同时，您很有可能需要提交(电机额定功率、风量、压力)在其中;2个参数。

In fact, when many customers come to inquire about the rotary fans, there are fans of specific well-known brands, or they have used fans of a certain brand at ordinary times. Now they need to change the manufacturer. Therefore, sometimes well-known brands will also become a parameter of choice. If you contact everyone on the network according to similar products, please inform everyone in advance that you need specific well-known brands, such as rotary fans, If we can provide the model and specification of the rotary fan, we can help you to select the fan that is suitable for you. For other Roots fans, at the same time, you may need to submit (motor rated power, air volume, pressure) among them; 2 parameters.

大部分废水处理、水池养殖、蒸气缩小基本上没有使用过的客户都是没具体参数，该怎么办呢?

Most customers who have not used wastewater treatment, pond breeding and steam shrinking basically have no specific parameters. What should we do?

(1)水产品养殖客户能够提供(养殖面积及水位)，就能帮助我们推算出压力及总流量参数。

(1) Aquaculture customers can provide (aquaculture area and water level), which can help us calculate the pressure and total flow parameters.

(2)废水处理爆气用风机，能够提供蓄水池的(长、宽、高[水位])分别是多少，这样也能推算出总流量压力值。

(2) The fan for waste water treatment explosion gas can provide the number of (length, width, height [water level]) of the reservoir, so that the total flow pressure can be calculated.

(3)气力输送系统使用的客户，可以提供(垂直高度，运输处理量，运输间距)等参数，推算出总流量及压力参数。

(3) Customers using the pneumatic conveying system can provide such parameters as vertical height, handling capacity and transportation spacing to calculate the total flow and pressure parameters.

(4)污水运用客户能够发放给生产厂家(挥发处理量、进出口贸易环境温度)等

(4) Sewage utilization customers can distribute to manufacturers (volatilization treatment amount, environmental temperature of import and export trade), etc

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