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zhongyi
zhongyi

COMPANY INTRODUCTION

We are a professional manufacturer specializing in the research and development of small and medium-sized deep cooling air separation equipment, nitrogen generators, oxygen generators, and other gas equipment.

 

The company has a research and development center, a manufacturing center, and a marketing service center, gathering high-quality experts and engineers to provide technical consulting, solution design, product manufacturing, installation and commissioning services.

 

Adhering to the business philosophy of taking technology as the guide, quality as the life, and seeking the market with integrity, Zhongyi will work hand in hand with friends from all walks of life to create a better future.

View Details
Zhongyi
2018 Year

Time of establishment

Zhongyi
500 +

Customer Service

PRODUCT CENTER

We provide customers with technical consultation, program design, product manufacturing, personnel training, installation and commissioning services, and accept special customization of various requirements of customers.

Cryogenic Air Separation Series

PSA pressure swing adsorption air separation series

Compressed air purification equipment series

Small nitrogen generator

Small nitrogen generator

PSA pressure swing adsorption nitrogen generator

PSA pressure swing adsorption nitrogen generator

ZYN-C Carbon and Nitrogen Purification Equipment

ZYN-C Carbon and Nitrogen Purification Equipment

ZLN Small Liquid Nitrogen Equipment

ZLN Small Liquid Nitrogen Equipment

INDUSTRY APPLICATIONS

Products are widely used in industrial production, scientific research, medical field, environmental protection and other fields.

Boys' wear

industrial production

Application: Air separation equipment is widely used in smelting metal, welding, cutting, oxidation, catalytic reaction and other processes to produce oxygen, nitrogen, argon and other gases.

Related Cases

Zhongyi

Scientific research

Application: The air separation plant can be used to manufacture high-purity nitrogen to supply to different production and application fields.

Related Cases

Kids' wear

Other applications

Application: With the rapid development of economy and the continuous progress of science and technology, the application prospect of air separation equipment is more and more broad, and it is also constantly developing and innovating.

Related Cases

NEWS CENTER

04-12

2019

Precision filters still have a lot of room for development
Precision filters still have a lot of room for development
Precision filters still have a lot of room for development

Precision filters still have a lot of room for development

The advantage of precision filters is that they can more effectively remove impurities in the liquid. In today's market, the construction of direct drinking water is constantly opening up and developing. Direct drinking water has great potential, which depends on various types of precision filters. To distinguish a concept, precision filters are not only used in industrial production, medicine and food, but also play an important role in drinking water in daily life. Filter water through the precision filter is also the core component of some water filters, not only can block the impurities in the water, including particulate matter, suspended matter, but also can block some impurities in the air, and some other automatic cleaning components together, to decontamination, prevent corrosion and bacteria generation effect. The new type of water filter has overcome the problems of small capacity of the traditional filter and the blockage of impurities in the filter net. Precision filter plays an important role in the development of water treatment. The water filter device of sewage filtration in our country was produced in about 1970, and when to the 1980s, the technology of the filter has been a little development, but the power control of the device, there is a certain gap with the advanced filter of foreign countries; Now, the domestic filter device can basically overcome some water treatment problems, but there is still room for further development, and strive for reasonable configuration with other accessories, to develop a more scientific and effective filter, applied to water treatment, petrochemical industry, medicine.

04-12

2019

Reasons affecting the working efficiency of freeze dryer
Reasons affecting the working efficiency of freeze dryer
Reasons affecting the working efficiency of freeze dryer

Reasons affecting the working efficiency of freeze dryer

Freeze drying machine can freeze material in a very short time, for some special factory or merchants box is an important equipment, ordinary working principle of the freeze dryer is very simple, namely heat transfer, but there are many factors that can affect heat and quality transmission, they will affect the transfer efficiency to a certain extent, which affects the efficiency of the frozen. 1. Morphology and composition of materials According to the form of freeze-dried materials, they are usually divided into solid and liquid. The form of solid and the concentration of liquid have great influence on the freeze-drying rate. 2. Pre-freezing rate The size of the crystals formed during freezing greatly affects the rate of drying and the rate of dissolution of the dried product. The differences between quick freezing and slow freezing are as follows: quick freezing produces smaller ice crystals, while slow freezing produces larger ice crystals. Large ice crystals are favorable for sublimation, while small ice crystals are unfavorable for sublimation. Rapid freezing leads to low sublimation rate and fast desorption rate. Slow freezing results in fast sublimation rate and slow resolution rate. 3. Pressure in drying chamber The level of pressure in the drying chamber of ordinary freeze dryer affects the rate of heat transfer and mass transfer. In terms of mass transfer, the lower the pressure, the better, while for heat transfer, the higher the pressure, the better. The mass transfer rate is mainly determined by the temperature and pressure of the sublimation interface and the dry layer surface. To increase the water vapor escape rate in the dry layer, firstly, the temperature of the sublimation interface should be raised to increase the water vapor pressure at the interface. The second is to improve the vacuum degree of the drying chamber and reduce the steam pressure on the surface of the drying layer. 4. Heat transfer mode According to the traditional classification can be divided into: conduction, convection, thermal radiation and medium heating (microwave heating). Since the process of sublimation drying involves the transfer of heat and mass (water vapor), the drying rate is greatly affected by which heat transfer method is adopted to transfer heat more effectively to the material. 5, the load When materials are lyophilized, there is a certain ratio of surface area to material thickness after they are divided into containers, that is, lyophilized is related to the loading volume. Small surface area and thickness are favorable for water sublimation, easy freeze-drying and good quality. When drying, the wet heavy load of drying on the unit area tray is an important factor to determine the drying time. In general, the thinner the thickness of material accumulation, the faster the heat and mass transfer speed, and the shorter the drying time. However, thin material thickness leads to less drying material per batch per unit freeze-dried area, which is unfavorable to increase the output per unit freeze-dried area and per unit time.

04-12

2019

Cause analysis of failure of cold and dry machine
Cause analysis of failure of cold and dry machine
Cause analysis of failure of cold and dry machine

Cause analysis of failure of cold and dry machine

Person just as its name implies is used for cooling equipment of the object, the application range is wide, often can be seen generally is used as part of the high pressure compressor, in the usual application and operation process, we will inevitably encounter some person malfunction, next we common several kind of problem for your answer. 1. What is the reason for the high exhaust temperature of the cold and dry machine? 1. The inlet temperature of the compressed air in the high pressure compressor is too high or the flow rate is too large. 2. The change of the working condition of the refrigeration system causes the rise of the refrigerant evaporation temperature, so that the compressed air is not cooled enough in the evaporator. 3. The heat dissipation of the outer wall of the precooler pipeline is too large. Two. What is the reason for the low temperature of the cold and dry machine? 1. The heat exchange area of the precooler is not enough and the refrigerating capacity of the evaporator is surplus. 2. The inlet temperature of compressed air in the high pressure compressor is low or the flow rate is too small. 3, the refrigeration system working conditions change, so that the refrigerant evaporation pressure is lower than the normal value. Three, the amount of refrigerant perfusion on the cold and dry machine what effect? 1, the refrigerant perfusion is too little, the cold and dry opportunity to appear the following phenomena: (1) evaporation pressure, cold pressure are lower than normal operation, but the air dew point is not down. (2) the compressor shell is hot. 2, refrigerant perfusion is too much, cold dry opportunity: (1) because the refrigerant liquid is deposited in the cold suspect, the cold suspect area is reduced, the cold suspect pressure is increased, and the high pressure trip is caused in serious cases. (2) Refrigeration compressor load increase. Difficult start-up. (3) the refrigerant in the evaporator is not fully vaporized, so that wet steam into the compressor, there is a risk of "liquid compression". (4) due to the rise of cold pressure, the cooling capacity of the high pressure compressor is reduced, and the air dew point rises. The above is the related problems of the cold and dry machine in the high pressure compressor. After we understand the problem, we should pay more attention to this problem in normal use, so that the use of the machine is more efficient.

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