Use and maintenance of manual homogenizer
 May 08, 2021|View:342

The manual homogenizer is a very important refining and dispersing machine, widely used in the dairy, beverage, food, cosmetic and chemical industries, among others. Among them, high pressure homogenizer is a continuous non-thermal processing technology for fluid materials, relying on manual homogenizer to achieve. The transmission part is composed of motor, pulley, gearbox, crank, connecting rod, plunger, etc. The plunger is driven by the piston, which makes reciprocating motion in the pump body and completes the suction and pressurization process with the cooperation of the check valve, and then enters the collector tube. The homogeneous valve accepts the high pressure liquid material from the collection tube and completes the task of ultra-fine powdering, emulsification and homogenization. The material in contact with the liquid in the valve must be non-toxic, non-polluting, wear-resistant, impact-resistant, acid-resistant, alkali-resistant, and corrosion-resistant. Different internal structure of high pressure homogenizer chamber, its use range and homogenization effect are different. manual homogenizer has the characteristics of high particle microfining ability, high energy consumption, high maintenance workload, high cost, can keep the material's performance basically unchanged, can quantitatively transport materials, etc., can be applied in all industries that need to handle fluid products, such as emulsification, dispersion, product particle crushing and cell crushing applications. It is also widely used in the production and development of food processing, milk, beverages, pharmaceuticals, dyestuffs, fine chemicals and biotechnology.

manual homogenizer

Use and maintenance of the manual homogenizer:

1. Installation

Place the manual homogenizer on a flat and sturdy table, put the high-pressure pump, homogenization valve, pressure gauge, check valve, sample tank and other components in place one by one (each component is relatively independent and can be disassembled and installed independently).

At the same time, prepare the air compressor or nitrogen tank and circulating cooling water, which is used to provide the very small pressure (5-10 bar) required by the dynamic homogenization valve and the pressure for pipeline flushing, and the circulating cooling water as the cold source for sample cooling, which can ensure the sample to maintain a low temperature during the homogenization process to avoid sample denaturation and inactivation.

2. Cleaning and disinfection

Check the entire sample pathway before starting the machine to ensure the pipeline is clean. Remove all components of the sample pathway and rinse them with pure water, then with 0.5M NaOH for a short time, and finally with warm water.

After cleaning, the components can be sterilized by hot steam, or the pipeline can be sterilized by hot steam cycle for about 10 min after installation.

3. Operation

Before starting the manual homogenizer, check the homogenizing liquid to make sure it does not contain impurities. Impurity particles, especially metal particles, can damage the pipeline and homogenizing valve and shorten the service life of the homogenizer; check the pipeline to make sure the components are properly installed and sealed, and the bolts are completely locked; check the gas source (compressor or nitrogen tank, etc.) to make sure it can provide the required pressure for operation; check the cooling water to make sure the cooling circulating water has been prepared in advance according to the process requirements, and connect the cooling water pipeline.

Before serving the sample, empty the small amount of liquid remaining in the pipeline completely, then introduce the sample into the sample tank and pre-homogenize it twice under empty pressure. Then raise the homogenization pressure to start homogenization according to the working requirements, and after the homogenization is finished, reduce the pressure to zero and empty the material.

4. Maintenance

After the homogenization, immediately wash with warm water and 0.5M NaOH cycle, and finally flush with water. After the pipeline cleaning, fill the sample tank and pipeline with 70% alcohol solution for next use. If the whole pipeline needs to be sterilized, the pipeline will be sterilized by hot steam cycle for about 10min after the cleaning.

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Finally, shut down the machine, cut off the power supply, turn off the air source and cooling water, etc.

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