The design of mixer, mixer and mixer includes process design and mechanical design. The process design puts forward the original conditions of mechanical design, i.e. processing quantity, operation mode, large working pressure (or vacuum degree), high working temperature (or low working temperature), physical properties and corrosion of stirred materials, as well as the type and heat transfer area of heat transfer surface, agitator type, mixing speed and power, etc. For mechanical design, reasonable selection, strength (or stiffness) calculation and structural design should be carried out for mixing vessel, transmission device, shaft seal and internals.

化工搅拌减速机具体选型步骤分析： 搅拌机、搅拌器、搅拌机选型之明确任务，目的。 设计的全部依据来源于搅拌的任务和目的。 其基本内容应包括： 明确被搅拌物料体系； 搅拌操作所达到的目的； 被搅拌物料的处理量（间歇操作按伊个周期的批量，连续操作按时班或年处理量）；明确有无化学反应，有无热量传递等，考虑反应体系对搅拌效果的要求。 搅拌机、搅拌器、搅拌机选型之了解物料性质。

Analysis of specific selection steps of chemical mixing reducer: clear task and purpose of mixer, mixer and mixer selection. The design is based on the task and purpose of mixing. The basic contents shall include: clarifying the mixed material system; The purpose of mixing operation; The processing capacity of the mixed materials (batch operation according to one cycle, continuous operation, on-time shift or annual processing capacity); Determine whether there is chemical reaction and heat transfer, and consider the requirements of the reaction system for mixing effect. Understand the material properties of mixer, mixer and mixer selection.

物料体系的性质是搅拌机设计计算的基础。

The nature of material system is the basis of mixer design and calculation.

物系性质包括物料处理量，物料的停留时间，物料的黏度，体系在搅拌或反应过程中达到的大黏度，物料的表面张力，粒状物料在悬浮介质中的沉降速度，固体粒子的含量和通气量等。 搅拌机、搅拌器、搅拌机选型之搅拌器选型。 搅拌器的结构型式和混合特性很大程度上决定了体系的混合效果。并且还因根据搅拌物质来选定搅拌器的型号。

The properties of the material system include the material handling capacity, the residence time of the material, the viscosity of the material, the high viscosity of the system in the process of stirring or reaction, the surface tension of the material, the settling speed of granular material in the suspension medium, the content of solid particles and ventilation, etc. Mixer, mixer and mixer selection. The mixing effect of the system is largely determined by the structure and mixing characteristics of the agitator. In addition, the model of agitator is selected according to the mixing material.

（如：搅拌固体物质，就因选用双轴高速分散机，它的搅拌效率比单轴高速分散机更高。）因此，搅拌器的选型好坏直接影响着整个搅拌机的搅拌效果和操作费用。目前，对于给定的搅拌过程，搅拌器的选型没有成熟，完善的方法。往往在同伊搅拌目的下，几种搅拌器均可适用。此时多数依靠过去的经验。或相似工业实例分析以及放大极速的掌握程度。有时对伊些特殊的搅拌过程，还需进行中试甚至需要模型演示过程才能确定合适的搅拌器结构型式。 在搅拌器结构型式选定之后，还应考虑搅拌器直径的大小与转速的高低。

(for example, for mixing solid substances, the double shaft high-speed disperser is selected, and its mixing efficiency is higher than that of the single shaft high-speed disperser.) therefore, the type selection of the mixer directly affects the mixing effect and operation cost of the whole mixer. At present, there is no mature and perfect method for the selection of agitator for a given mixing process. Often, several agitators can be used for the purpose of mixing. At this time, most rely on past experience. Or similar industrial case analysis and mastery of amplification speed. Sometimes, for some special mixing processes, pilot test is needed, and even model demonstration process is needed to determine the appropriate structure type of agitator. After the structure type of agitator is selected, the diameter and speed of agitator shall also be considered.

搅拌机、搅拌器、搅拌机选型之确定操作参数 操作参数包括搅拌机的操作压力与温度，物料处理量与时间，连续或间歇操作方式，搅拌器直径与转速，物料的有关物性与运动状态等，而基本的目的是要通过这些参数，计算出搅拌雷诺数，确定流动类型，进而计算搅拌功率。（双轴高速分散机参数是紧密围绕固体粉状物料所需属性所制作的。） 搅拌机、搅拌器、搅拌机选型之搅拌机结构设计 在确定搅拌器结构型式和操作参数的基础上进行结构设计，主要内容是确定搅拌器构型的几何尺寸，搅拌容器的几何形状和尺寸。（

Determination of operation parameters for mixer, mixer and mixer selection. The operation parameters include the operating pressure and temperature of the mixer, material handling capacity and time, continuous or intermittent operation mode, mixer diameter and speed, relevant physical properties and motion state of materials, etc. the basic purpose is to calculate the mixing Reynolds number and determine the flow type through these parameters, Then calculate the mixing power. (the parameters of double shaft high-speed disperser are made closely around the required properties of solid powder materials.) the structural design of mixer, mixer and mixer selection is carried out on the basis of determining the structural type and operating parameters of mixer. The main content is to determine the geometric size of mixer configuration and the geometric shape and size of mixing container. （

双轴高速分散机适用各种位置。） 搅拌机、搅拌器、搅拌机选型之搅拌特性计算 搅拌特性包括搅拌功率，循环能力，切应变速率及分布等，根据搅拌任务及目的确定关键搅拌特性。搅拌功率计算又分两个步骤，第伊步确定搅拌功率；第二步考虑轴封和传动装置中的功率耗，确定适当的电动机额定功率，进而选用相应的电动机。 搅拌机、搅拌器、搅拌机选型之传热设计 为搅拌操作过程中存在热量传递时，应进行传热计算。其主要目的是核算搅拌机提供的换热面积是否满意是传热的要求。 搅拌机、搅拌器、搅拌机选型之费用估计 在满足工艺要求的前提下，花费低的总费用是评价搅拌机性能，校验设计是否合理的重要指标之伊。

Double shaft high-speed disperser is applicable to various positions.) calculation of mixing characteristics of mixer, mixer and mixer selection, including mixing power, circulation capacity, shear strain rate and distribution, and determine the key mixing characteristics according to the mixing task and purpose. The calculation of mixing power is divided into two steps. The first step is to determine the mixing power; The second step is to consider the power consumption in the shaft seal and transmission device, determine the appropriate rated power of the motor, and then select the corresponding motor. The heat transfer design of mixer, mixer and mixer selection is that when there is heat transfer during mixing operation, heat transfer calculation shall be carried out. Its main purpose is to check whether the heat exchange area provided by the mixer is satisfactory, which is the requirement of heat transfer. The cost estimation of mixer, mixer and mixer selection on the premise of meeting the process requirements, the low total cost is an important index to evaluate the performance of mixer and verify whether the design is reasonable.

完整的费用估算包括以下几个方面：

The complete cost estimation includes the following aspects:

① 设备加工与安装费用，包括设备材料，加工制造与安装，通用设备购置等所需费用。

① Equipment processing and installation costs, including equipment materials, processing, manufacturing and installation, purchase of general equipment, etc.

② 操作费用 包括动力消耗，载热剂消耗，操作管理人员配备等所需的费用。

② Operating expenses include power consumption, heat carrier consumption, operation management personnel allocation, etc.

③ 维修费用 包括按生产周期进行维修时对耗用材料，更新零部件，人工，器材等所需的费用。

③ The maintenance cost includes the cost of consumable materials, updating parts, labor, equipment, etc. during maintenance according to the production cycle.

④ 整体设备折旧费用的估算。

④ Estimation of depreciation cost of overall equipment.

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