The hot and cold cylinder is a sanitary equipment with multifunctional heating and cooling as the name implies. The cold and hot cylinder was also called the aging cylinder in the past. It belongs to the stainless steel tank for the preparation and sterilization of the finished product or intermediate liquid, and the low temperature treatment of high temperature liquid. It is widely used in Purchase equipment for food, medicine and other processes. I. Classification of hot and cold cylinders According to the heating medium, they can be divided into natural gas cold and hot cylinders, steam cold and hot cylinders, and electric heating cold and hot cylinders. They can be divided into open and cold cylinders and closed cold and hot cylinders according to structure. It can be divided into: ordinary type, upper and lower taper, upper and lower head. Structure and function: Structure: It consists of inner liner, jacket, insulation layer, outer skin, reducer, stirring paddle, thermometer and so on. Liner: made of stainless steel 304 material, the surface is polished. Middle-layer jacket: made of A3 steel plate or 1Cr18Ni9Ti steel plate, spiral ring device with reinforced ring, cold water from bottom to top (no pressure), to achieve the best purpose of rising and cooling. Insulation group: It is made of stainless steel plate with fish scale pattern. The insulation layer is kept at the temperature with the outside by polyurethane or glass wool to achieve the effect of heat preservation. Reducer: Cycloidal pinwheel planetary reducer, fixed on the bracket in the beam, the reducer wheel output shaft is connected with the stirring paddle, and the sleeve is used for easy disassembly and cleaning. Thermometer: Specification 00C ~ 1000C, installed on the beam, directly extending the position of ** medium, so that the liquid material can also indicate the temperature when used at the ** position, to achieve the purpose of sterilization and aging. Third, the installation of hot and cold cylinders: Adjust the equipment's feet until the horizontal line is perpendicular to the reducer before installing each pipeline. When working, pay attention to the stirring paddle should be rotated clockwise and must not be reversed. Fourth, use and maintenance: 1. Description: Before using this equipment, the reservoir must be cleaned with fresh hot water and then disinfected with steam. The material slurry enters the tank from the material tube fixed on the cylinder head, or the cylinder head is opened and poured. The material should not be filled too much, so as to prevent the material from splashing outside when being stirred by the mixer, causing unsanitary or loss of environment. 2. Heating method: When heating, the refrigerant inlet valve must be closed, the remaining refrigerant in the jacket must be exhausted, then input the materials, start the stirrer, and then open the steam valve. When the required temperature is reached, the steam valve should be closed first. After ~ 3 minutes, turn off the agitator again. 3. Cooling method: Close the steam valve, exhaust the remaining steam condensate from the jacket, and then open the cylinder bottom refrigerant valve to allow the refrigerant to pass through the jacket to reduce the temperature of the material in the cylinder. 4. Thermal insulation: According to the required temperature, start the stirrer, high-speed valve, and maintain the temperature (note the temperature table) in order to achieve the purpose of thermal insulation. 5. Cleaning: After processing, after exhausting the remaining condensed water in the jacket of the cylinder, rinse it with warm water as soon as possible, brush off the sticky materials, and then thoroughly wash the inner wall of the container with 40C ~ 50C alkaline water, and rinse with water. The next time you use it, use hot water or steam (90C) or more and keep it disinfected for 2 ~ 3 minutes. 6. Maintenance: Pay attention to the working condition of the entire set of equipment and reducer. When the lubricant of the reducer is insufficient, replenish it immediately. Change the oil once every six months (40 # engine oil). When the equipment is not in use, be sure to rinse the jacket with warm water to avoid The salt water is corrosive, and the cylinder body is often scrubbed to keep the exterior clean and the inner liner bright and durable.