Teach you how to choose a mixing device

Entering the peak season of decoration, the amount of paint is also greatly improved, it is a good time for merchants to make money. If the merchant has high-quality production equipment, it will be even more powerful in this peak season of sales. Imagine that a large number of orders are held, but the production equipment is not coordinated. Three days of minor repairs, five days of major repairs, and the cost of repairs is not lost. It is also a good opportunity to earn money. Losing the trust of customers, there will be no more orders in the future, Shandong Longxing Chemical Machinery Group (13505459798 0535-2348158) Co., Ltd. teaches you how to choose mixing equipment.

1. Mixer of mixing equipment Under normal circumstances, the selection of the structure type of the agitator should meet the following basic requirements; ensure the effective mixing of materials, consume the least power, the minimum cost, easy operation, easy to manufacture and repair. (Yongtong dual-axis high-speed disperser is easy to operate and maintain)

At the same time, the blades of the agitator should have sufficient strength. The root of the blade is subjected to the largest bending distance, and the section should have sufficient bending section modulus. When the blade is long, a reinforcing plate may be provided at the non-working surface of the blade root to make the section into a hollow shape. This not only effectively increases the section bending modulus, but also does not excessively increase the quality of the blade. For the reinforced version of the axial flow agitator, the shape should not be detrimental to the trend, and it is not appropriate to weld the ribs at the root of the blade. A radial flow agitator can weld horizontal ribs. The thickness of the anti-corrosion liner of the blade should not be too large to prevent the blade from deviating from the optimal shape, so that the flow rate and the input stirring power are reduced, which affects the operation effect. (Yongtong double-shaft high-speed disperser has stable stirring operation and higher working efficiency than single-axis high-speed dispersing machine. It is an efficient equipment suitable for mixing, blending, dissolving and dispersing operations with large proportion of solid powder materials.)

2. Stirring vessel for mixing equipment The shape and size of the stirred vessel should be determined according to the scale of production (ie material handling), the purpose of the mixing operation and the characteristics of the material. When determining the volume of the stirred vessel, the charging factor should be reasonably selected to maximize the utilization of the equipment. If there is no special need, the most suitable vertical cylindrical container should be selected for the kettle body, and the appropriate cylinder height-to-diameter ratio (or container height to diameter ratio) should be selected. If there is a heat transfer requirement. The jacket body structure shall be provided on the outside of the kettle body, and the jacket type includes an integral jacket, a spiral baffle jacket, a half pipe jacket, and a honeycomb jacket, and the heat transfer effect is sequentially increased, but the manufacturing cost is also increased accordingly.

3. Mixing shaft of the mixing equipment The stirring shaft should have sufficient torsional strength and bending. Generally, the agitator shaft should be designed as a rigid shaft and required to be sufficiently rigid. In order to prevent the shaft from resonating, the operating speed should be controlled below 75% of the first-order critical speed. When the operating speed is high (800-1200r/min), the agitator shaft can also be designed to be flexible, but not used as much as possible. The structure of the agitator shaft should be small, and if the shaft diameter is large, the hollow shaft structure should be used as much as possible.

4. The shaft seal of the mixing equipment can be sealed with packing when the amount of liquid leakage is high and the pressure in the tank is low; the amount of liquid leakage is small, the positive pressure or vacuum in the tank is high, and the shaft and shaft are required. Where the frictional power consumption of the suite is low, it is recommended to use a mechanical seal structure; and when the agitation medium is highly toxic, flammable, explosive, or expensive, high-purity materials, or need to operate under high vacuum, the sealing requirements are very high. High, and the packing seal and mechanical seal can not be satisfied, the full-closed magnetic transmission can be selected, but the power transmitted by the magnetic transmission is generally small.

5. Transmission of the mixing equipment The appropriate transmission should be selected according to the process requirements and operating environment. In addition to the power and output speed requirements, the selected transmission should be reliable, easy to maintain, and have high mechanical efficiency and low noise. (Yongtong dual-axis high-speed disperser adopts advanced electromagnetic shifting)

6. Rack of mixing equipment The rack of the mixing equipment should have sufficient support spacing for the mixing shaft. In order to ensure that the yaw amount at the lower end of the stirring shaft is small during operation. The frame should ensure that the output shaft of the transmission is centered with the agitator shaft and should also be centered with the shaft seal. In addition to bearing the outward load, the frame bearing should also withstand the axial force generated by the agitator.

7. The internal components of the mixing equipment of the mixing equipment should be determined whether the baffle and the inner cooling pipe are installed in the container according to the structure type of the agitator and the material operating characteristics. Most of the mixing equipment equipped with baffles are operated under full baffle conditions. For the mixing of low viscosity liquids, four baffles are often installed in the kettle, and the width is D/12---D/10 to meet the full block. Board conditions. As the liquid increases, the width of the baffle can be narrowed. When the viscosity of the liquid is 20pa.s, the width of the baffle can be taken as 75% of the usual value; when the viscosity of the liquid exceeds 50pa.s, there is no need to set the baffle.