用途：

usage:

w型结晶设备用于制药中物料搅拌混合，降温冷冻，成品结晶等作用，结晶罐还广泛用于乳品行业、食品、化工、饮料等工业，可采用304、316l、钛材、哈氏合金、内衬ptfe等材料制造，内壁采用电解镜面抛光或机械抛光，外壁采用304全焊接结构保温，外表面采用镜面或或亚光处理。

the crystallization tank is used for mixing and blending materials, cooling and freezing, and finished products crystallizing in pharmaceutical industry. the crystallizing tank is also widely used in dairy, food, chemical, beverage and other industries. it can be made from ss304, ss316l, titanium, hastelloy, ptfe lined or other material. the inside wall is treated with electrolytic mirror polishing or mechanical polishing while the outside wall uses ss304 full-welding structure to preserve heat, and the outside surface is treated with mirror polishing or matte polishing.

概述：

summary:

传统的结晶罐罐体封头常采用标准椭圆形封头，外部依靠夹套内的热流体进行温度控制。传统的结构并不能充分的保证罐体内物料混合的充分性和温度控制的均匀性，尤其是对晶型要求比较高的产品，结晶效果往往不理想。为了对传统结晶罐的内部结构进行改进，本设计采用w型封头代替以往常用的标准椭圆形封头，w型封头和拉气筒的共同作用改变了内部的流场形态，有很好的导流效果；保证了物料的充分混合性，避免局部产生过高的溶质饱和度影响结晶效果；并且在罐体内增设了拉气筒结构。通过拉气筒和夹套内流过的热流体共同对罐内物料进行温度控制，而非传统结晶罐仅仅靠夹套来控制温度，这种内外共同控制有效的保证了物料温度的均匀性，改善了结晶效果；w型封头和拉气筒的共同作用改变了内部的流场形态，有很好的导流效果；保证了物料的充分混合性，避免局部产生过高的溶质饱和度影响结晶效果；同时，流场的均匀性显著改善了桨叶所受载荷的变化，因而有效的降低了搅拌轴损坏的危险；最终的晶型比较均匀。

the head of the traditional crystallization tank is usually the standard ellipsoidal head, and its outside part control the temperature through hot fluid in the jacket. the traditional structure can outside part control the temperature through hot fluid in the jacket. the traditional structure can not sufficiently ensure materials mixed enough and uniformity of temperature control in the tank, especially for those products that have high requirements for crystal form, its crystallizing effect is always not ideal. in order to improve the inside structure of traditional crystallization tank, the standard oval head is replaced by the w-shaped head in the design. and the air cylinder structure is additionally provided in the tank. temperature control of the materials in the tank is realized through the hot fluid passing the air cylinder and jacket, instead of temperature control only by the jacket in the traditional crystallization tank. this kind of joint control from inside and outside effectively ensures uniformity of material temperature and improves the crystallizing effect. the combination of w-shaped head and the air cylinder changes internal flow flied forms, and realizes good diversion effect, ensure that materials are fully mixed, avoid local too high solute saturation generated that causes bad influence on crystallizing effect. meanwhile, the even flow field can obviously improve the change of load carried by the blades, so the risk of damaging the mixing shaft is effectively reduced and the final crystal form is more uniform..