Chemical And Pharmaceutical Industry Vacuum Pump

Vacuum pump is a kind of universal equipment, can be used in all areas the mechanical products, the type of vacuum pump used in the pharmaceutical and chemical industry to do the introduction, the main process is under the condition of negative pressure distillation, concentration, drying and smoking material, such as vacuum pump as the main auxiliary equipment, plays a key role. Therefore, it is very important to select suitable vacuum equipment under certain working conditions for normal, stable and efficient operation of production.

Generally, most vacuum pumps used in the chemical industry are water ring vacuum pumps or roots water ring vacuum units, which are equipped with anti-explosion motors and anti-corrosion materials. In the pharmaceutical industry, there are more water injection vacuum units, which are specially used in the pharmaceutical industry.chemical-and-pharmaceutical-industry-vacuum-pump

In the current increasingly serious situation, environmental pressure limiting vacuum of vacuum equipment in addition to consider, swept volume, many parameters, such as anti-corrosion explosion-proof performance and installation, also take into account the requirements of environmental protection and energy conservation research, also should try to control the emissions of pollutants.

Soda series jet vacuum pump is on the horizontal water spray vacuum pump unit in series with a steam jet pump, its relative steam jet pump greatly reduce the steam consumption and high ultimate vacuum, however, convenient maintenance, good corrosion resistance. Some pharmaceutical unit on the basis of many years using a variety of vacuum pump, after many practice and summary of shows that the pump particularly prominent in acid and alkali corrosion resistance, high vacuum degree requirements (1000 pa) under the conditions of use, and the vacuum pump unit comprehensive performance is stable, easy to repair, is a better choice in this condition.vacuum-pumps-in-oil-refining-and-petrochemical-production

The use units have gradually eliminated other types of vacuum pumps, and replaced them into anti-corrosion soda series injection vacuum units, which have achieved good results and greatly reduced production costs.thin-oil-metal-metallurgy-requires-medium-vacuum-unit

Vacuum Pump For Vacuum Packaging Machine

Vacuum technology is widely applied in all kinds of process, such as vacuum melting furnace, RH vacuum treatment, vacuum coating, vacuum distillation, vacuum concentration, vacuum welding, vacuum casting, vacuum coating, vacuum surface treatment, vacuum tube, vacuum drying, vacuum sterilization, food packaging, the development and utilization of solar energy, a particle accelerator, controlled nuclear fusion, and space and so on.
vacuum-pump-for-vacuum-packaging-machine
Usually need to vacuum pump to achieve a certain vacuum packaging machine vacuum packaging technology, to achieve the main purpose of the vacuum packing is oxygen, to help prevent food spoilage, its principle is simple, because food metamorphism causing mold mainly caused by the activity of microorganism, and the survival of most microorganisms (e.g., mold and yeast) is need oxygen, and vacuum packing is using this principle, the packaging and food within the cell oxygen smoke, lose microbial survival environment.water-ring-vacuum-pump-in-pharmaceutical-equipment-industry

The results show that when the oxygen concentration in the packaging bag is less than 1%, the growth and propagation speed of microbes will decrease sharply. When the oxygen concentration is less than 0.5%, most microbes will be inhibited and stop breeding. (note: vacuum packing can inhibit anaerobic bacteria breeding and enzyme reaction caused by food metamorphism and discoloration, so still need to combine with other auxiliary methods, such as cold storage, frozen, dehydrated, high temperature sterilization, irradiation sterilization, microwave sterilization, salt, etc.).

The vacuum pumps commonly needed in the process of vacuum packaging include XD rotary vane vacuum pump, and rotary vane vacuum unit.vacuum-pump-application-in-plastic-forming

Water Ring Vacuum Pump In Pharmaceutical Equipment Industry

Water ring vacuum pump is widely used in the pharmaceutical industry, such as vacuum evaporation, vacuum concentration, vacuum conveyor, vacuum sterilization, vacuum drying, vacuum packaging and vacuum mixed emulsifying process requirement. How to choose the proper vacuum pump reasonably requires some understanding of the principle of various vacuum pumps and the use of methods.

Water ring vacuum pump is water or other liquid as circulating working fluid through the change of pump content volume to achieve the purpose of vacuum extraction. It is impossible to get the inlet pressure lower than the working liquid steam pressure by using liquid ring pump. If the liquid steam pressure is close to the inlet pressure, it will cause cavitation erosion and damage to the pump. For example, at 15 ℃ water vapour pressure of 1.7 x 103 Pa, to avoid cavitation, allowing the minimum inlet pressure of water ring pump is 3.3 x 103 Pa. If the inlet pressure is lower than this value, the media with lower steam pressure, such as kerosene, styrene and ethylene glycol, should be selected.
Water Ring Vacuum Pump In Pharmaceutical Equipment Industry

Vacuum Pump Application In Plastic Forming

In food, beverage, candy, stationery, hardware tools, daily provisions, chemical products production and processing process need to use vacuum pump to achieve the purpose of vacuum forming, so for the choices of vacuum pump is very important.

Suction molding, also called vacuum forming, is one of thermoplastic hot forming methods. Refers to the sheet or plate material clamping on the framework of vacuum forming machine, soften, through modeling the edge of the air passage, its use vacuum adsorption to the mold, after a short period of time of cooling, molding plastic products. The equipment used in this method is simple, the mold does not need to bear pressure, can be made of metal, wood or gypsum, forming speed is fast, easy to operate. However, the vacuum pump selected in different process requirements is also different.
Vacuum Pump Application In Plastic Forming

EVP Piston Pump Advantage

EVP piston vacuum pump have the single stage piston and dual stage piston pump, it’s namely H series and 2H series.

H series and 2H series piston pump advantage as follow:

1, EVP piston pump almost have no any shakes because the low gravity center .

2, EVP H series ultimate pressure is more higher than other company dual stage piston pump.

3, EVP piston pump have the compact structure and light weight.

4, EVP piston pump have thin upper oil layer of exhaust valve,so its fuel injection is very less.

5, The “o” ring seal is adopted between the pump body and the pump cover, which is easy to install and disassemble, and has strong sealing ability.

6, Universal pump cover exchange, easy maintenance.

7, Greatly reduced fuel consumption

application of condenser in vacuum system

LIQUID RING VACUUM PUMP IN THE VACUUM DISTILLATION INDUSTR

Liquid  ring vacuum pump in the industrial production process vacuum distillation is used more, how to choose correctly and use liquid  ring vacuum pump is particularly important. The vacuum distillation is one of the distillation methods. Under reduced pressure, commonly used in separation under atmospheric pressure is easy to decompose when heated to boiling point substances, or combined with other distillation methods such as steam distillation in order to reduce the distillation temperature and improve the separation efficiency. Used for separation and purification of chemical, organic, metal compounds, metal alcohol salts, etc.
Liquid-ring-vacuum-pump-in-the-vacuum-distillation-industry

Vacuum distillation is also used for deep purification of some special gases. Some compounds have high boiling points. To boil such compounds, it is better to lower the pressure of boiling rather than raise the temperature. Once the pressure is reduced to the vapor pressure of the compound (at a certain temperature), the compound begins to boil and the distillation can proceed. The technology is called vacuum distillation and is commonly used in the laboratory as a vacuum carburetor. This technique is useful for compounds that boil at atmospheric pressure above their decomposition temperature, and any attempt to boil them at atmospheric pressure will break them down.

The application principle of roots pump in papermaking industry

Selection requirements for vacuum pump oil

1. Sealing of vacuum pump oil

With suitable viscosity vacuum pump oil demand, the rapid start at low temperature can make the vacuum pump, vacuum pump oil at high temperature can have good sealing, within the pump vacuum pump oil has low temperature rise. It does not contain light volatile components and reduces the oil return rate of vacuum pump during operation.

2. Saturated vapor pressure of vacuum pump oil

Saturation vapor pressure is one of the key indexes of vacuum pump oil. In a closed container with constant temperature, the pressure is called saturation vapor pressure when the vapor-liquid two phases reach dynamic equilibrium.
the-use-of-gas-ballast-in-rotary-vane-vacuum-pumps

The saturated vapor pressure of the oil should be as low as possible. At the highest operating temperature of the pump, the saturated vapor pressure should be low enough and lower than the limit pressure of vacuum pump rules. Under the condition of 60 ℃ temperature to reach at least six. 5 x 10-5 kPa (for every temperature 20 ℃, saturated vapor pressure falling about an order of magnitude).
3. Ultimate total pressure and ultimate partial pressure of vacuum pump oil
Ultimate total pressure: the total pressure produced by all substances (gases) of the vacuum pump is measured by pyranimeter or thermocouple vacuum meter. At present, foreign countries pay attention to the test indicators of total pressure.

Limit partial pressure: the limit partial air pressure of the pump measured by the mercury tight vacuum gauge (MCT), the partial pressure of the double-stage rotary vane pump should be no more than 6 * 10-5kpa. Limit total pressure and limit pressure difference request is not more than an order of magnitude. The greater the difference between the two, the more volatile components the vacuum pump oil contains and the worse the properties of the oil.