Hot and cold cylinderoverview

Hot and cold cylinder(also known as aging tank) can be used as a detoxification tank, mixing tank, temporary storage tank, ingredient tank, etc，It has the advantages of energy saving, noise reduction, corrosion resistance, strong production capacity, and easy cleaning,Hot and cold cylinderWidely used in the dairy industry, food, pharmaceutical, chemical, beverage and other industrial sectors as a heating, cooling, insulationsterilizeThe necessary equipment for processing or storing slurry, hot and cold tanks are particularly suitable for pasteurization and insulation of milk, and are essential equipment in ice cream production lines.

1、 Classification of hot and cold cylinders

According to the heating medium, it can be divided into steam hot and cold cylinders, and electric heating hot and cold cylinders；
According to the material input and output, it can be divided into: open typeHot and cold cylinderClosed hot and cold cylinder；
According to the structure, it can be divided into:Open top and inclined bottom, open top and conical head；

According to volume, it can be divided into:100-10000LAccording to the specifications, design and manufacturing can also be carried out based on the actual needs of customers.

2、 Structure and function of hot and cold cylinders:

Structure: Composed of inner liner, jacket, insulation layer, outer sheath, reducer, mixing blade, thermometer, etc.
1Inner liner: Made of stainless steel plate 304 material, with a polished surface.
2Middle jacket: made of A3 steel plate or 1Cr18Ni9Ti steel plate, reinforced with a spiral device, with cold water flowing from bottom to top (without pressure) to achieve optimal heating and cooling.
3Insulation group: made of stainless steel plates cast into fish scale patterns, and the insulation layer is made of polyurethane orrockCotton maintains temperature with the outside world to achieve insulation effect.
4Reducer: Cycloid pinwheel planetary reducer, fixed on the bracket in the crossbeam, the reducer wheel output shaft is connected to the mixing blade, using a loose coupling for easy disassembly and cleaning.
5Temperature gauge: Specification 0 ℃~100 ℃, installed on the crossbeam, extending straight to the lowest position of the medium, so that the liquid material can indicate the temperature even at the lowest position, achieving the purpose of sterilization and aging.

Note:
1The nominal volume, dimensions, and other parameters in the chart are standard configurations. If the customer has other requirements, please provide them.
2Working pressure of interlayer≤0.09MpaIf the customer has special requirements, customization can be made according to the requirements.
3The process parameters required for selecting hot and cold cylinders include material properties, working pressure, working temperature, special requirements, etc.
Technical requirements:
1File support: Equipment structural dimension drawings can be provided（PDF）Instructions for use, etc.
2According to the functional requirements, the following standards are adopted for design, manufacturing, and inspection:
AGood Manufacturing Practice for Drugs（1998Chapter 4 of the Annual Revised Edition31-37Terms and conditions;
BSteel Pressure Vessels（GB150-1998）》;
CSteel Welded Atmospheric Pressure Vessels（JB/T4735-1997）》;
DFood Machinery Safety and Hygiene（GB16798-1997）》.

The cavity formed between the inner liner and the middle jacket of Jiadun brand's hot and cold cylinders is a cavity. When the cold and hot media flow into the cavity and heat or cool the materials inside the inner liner, some of the cold and hot media are prone to flow directly to the outlet, causing a "short circuit" phenomenon, reducing the heat exchange area between the inner liner wall and the cold and hot media, greatly extending the cooling or heating time of the materials. The heat transfer area between the cold and hot media and the inner liner wall has been increased, avoiding the "short circuit" phenomenon of the cold and hot media, greatly shortening the cooling or heating time of the material, and improving the energy utilization efficiency.

It is necessary to provide a cold and hot cylinder that can avoid the phenomenon of "short circuit" between cold and hot media, has a large heat exchange area, and has a fast cooling or heating speed for materials.

Nanjing Jiadun Automation Equipment Co., Ltd. is a professional manufacturer of cold and hot cylinders and stainless steel cold and hot cylinders. Our phone number is 13913888986 and we have the same WeChat account

3、 Installation of hot and cold cylinders:

Adjust the support legs of the device to a horizontal line perpendicular to the reducer before installing each pipeline. During operation, be sure to rotate the mixing blade clockwise and not in reverse.

4、 Cold and hot cylinder usage and maintenance:

1. Explanation:Jiadun BrandHot and cold cylinderBefore use, the liquid storage container must be cleaned with hot water and then disinfected with steam. The material slurry enters the cylinder through the material pipe fixed on the cylinder head, or is poured into the cylinder head when the cylinder head is opened. The material should not be filled too full to avoid splashing out when the material is stirred by the mixer, causing unsanitary environment or loss.
2. Heating method: It must be turned off during heatingcondensationInlet valve, drain the remaining contents of the jacketcondensationThen input the material, start the mixer, and open the steam valve. After reaching the desired temperature, close the steam valve first, and after 2-3 minutes, turn off the mixer.
3. Cooling method: Close the steam valve, drain the remaining steam condensate from the jacket, and then open the bottom of the cylindercondensationValves, enablingcondensationPass through the jacket to lower the temperature of the material inside the cylinder.
4. Insulation: According to the required temperature, start the mixer, high-speed valve, and maintain the temperature (pay attention to the temperature gauge) to achieve insulation.
5. Cleaning: After the processing is completed and the remaining condensed water in the jacket of the cylinder is drained, it should be rinsed with warm water as soon as possible to brush off the sticky material. Then, it should be thoroughly cleaned on the inner wall of the container with 40-50 ℃ alkaline water and rinsed with clean water. For the next use, it should be disinfected with hot water or steam (above 90 ℃) for 2-3 minutes.
6. Maintenance: It is necessary to regularly pay attention to the working condition of the entire equipment and reducer. If the lubricating oil of the reducer is insufficient, it should be replenished immediately. The oil should be changed every six months (40 # engine oil). When the equipment is not in use, the jacket must be rinsed with warm water to prevent salt water corrosion. The cylinder body should be cleaned regularly to keep the exterior clean and the inner liner bright, achieving the purpose of durability.

Our company's hot and cold cylinders are used in the dairy, pharmaceutical, and chemical industries for heating, cooling, insulation, and disinfection of materials. It consists of an inner liner 3, a jacket 5 located outside the inner liner 3, a bladder cover 12 with a top plate 13 placed on the inner liner 3, a reduction motor 1 installed on the top plate 13, and a mixer 10 located inside the inner liner 3. Ribs 4 are provided between the jacket 5 and the inner liner 3. This utility model can increase the heat transfer area between the cold and hot media and the inner liner wall, avoid the "short circuit" phenomenon of the cold and hot media, greatly shorten the cooling or heating time of the material, and improve the energy utilization efficiency.

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