Vacuum pumps in the XXI century are used everywhere: both in everyday life and in production - they minimize the pressure in a closed container for a minimum period of time. The results of their actions today are difficult to overestimate. For example, most products come to the buyer now in vacuum packages. If you need to buy a vacuum pump, and the best one, but it is not easy to make a choice, we recommend you to pay attention to the models below. Manufacturers of the presented products are well known in the world and do not need additional advertising.
Top Low Vacuum Pumps
Busch R5 - rotary vane pump
Busch R5 single-stage vacuum pumps (Germany) are used for the production of packaging, beverages, ceramics, plastics and medical equipment. Used in the printing and food industry, for transportation systems and centralized pumping.
The design has an eccentric rotating mechanism with plates. All gaps are sealed with oil. Air and gases are removed continuously and cyclically. Characteristics of the models of the R5 range: capacity 4 ... 1920 m3 / h, power 0.1 ... 30 kW, residual pressure 0.1 ... 120 mbar.
Pros:
- efficiency: thanks to the oil purifier, gas ballast and non-return valves, respectively, the gas is released clean, the steam is pumped out in large quantities, prevents the return flow of air;
- a variety of models: in addition to the standard versions, explosion-proof modifications are available, compatible with pairs, for oxygen and coarse vacuum, in a compact design;
- high quality: a consequence - more than 2.5 million units R5 are in operation in the world;
- smooth feed and low noise;
- simplicity, reliability and durability.
Minuses:
- due to the presence of oil limited scope of application;
- high cost: from 30 to 210 thousand rubles.
Edwards XDS - Spiral Pump
Edwards XDS dry vacuum pumps (England) are direct competitors of rotary vane machines.
Scopes of spiral booster units: pumping out of special chambers for implantation, electron microscopes, various spraying, exceptionally oil-free gas removal, joint work with high vacuum units.
They have 2 spirals: one is static, the other is dynamic. They are characterized by low residual pressure (about 10-2 mm Hg) and high pumping speed (35 ... 95 m3 / h). The power of the electric motor is 0.52 kW, the maximum inlet pressure is 1.5 bar.
Pros:
- innovative solutions: gas ballast equipment, insulation using a special bellows;
- operation stability: power supply voltage in a wide range does not affect the technical characteristics;
- reliability: the lack of penetration of various impurities into the chamber;
- ease of installation and operation: ease (48 kg), the availability of remote control, low noise (52.1 ... 57.0 dB);
- simple maintenance and repair, long service life.
Minuses:
- There are more modern models of Edwards nXDX;
- not cheap: for example, XDS 35i costs 98 ... 189 thousand rubles.
Samson Pumps KE - water ring pump
Three-phase vacuum pumps Samson Pumps KE (Denmark) are mainly used for pumping steam, gas and air mixtures from process tanks with a pressure of ≈ 0.9 atmospheres and a speed of ≤ 320 m3 / h. The vakuumnik works according to the scheme characteristic of a volumetric hydraulic machine.
Special differences: only two connections, the original combination of materials, built-in nozzles and seals on the ends. In the line of 12 models with generalizing characteristics: residual pressure 33 ... 100 mbar, engine power 4.0 ... 11.0 kW, optimal performance 150 ... 320 m3 / h.
Pros:
- quality of materials and assembly, as well as high efficiency: products are operated in more than 80 countries of the world;
- strength: cast iron rotor, mechanical shaft seal, in addition, the impeller is capable of pumping gas with a temperature ≥ +80 ° C;
- compactness: due to constructive solutions;
- operational advantages: low noise impact, high profitability;
- cheap maintenance, increases resource.
Minuses:
- low vacuum;
- few fixed prices.
Top High Vacuum Pumps
Leybold COOLVAC - cryogenic pump
Refrigerator vacuum pumps Leybold COOLVAC (Switzerland) are used for protective coatings, electron-beam welding, evaporative systems, loading chambers, space simulators and laboratory equipment.
One of the main components is cooled cryo heads. It is on their surfaces that gaseous substances condense, resulting in a vacuum of necessary purity.
There are 9 models in the line - among them only the 800th modification is not automatically controlled. Characteristics: pumping speed 1.0 ... 180.0 Gl / s, launch 150 ... 1000 mbar · l, cooling time 50 ... 330 min.
Pros:
- high purity and performance, and for many gases;
- stability of operation: full recovery of indicators after regeneration, insensitivity to vibrations and possible impurities;
- Nitrogen purge is not required;
- Convenience and ease of use: using a computer;
- compatibility with low vacuum specimens.
Minuses:
- cyclical operation: periodically need regeneration;
- high cost: prices in the hundreds of thousands of rubles.
Agilent TwissTorr - Turbomolecular Pump
Innovative vacuum pumps Agilent TwissTorr (USA) have high-tech applications: laser devices, electron-beam welding, gas chromatographs. They are used in research laboratories, including industrial facilities.
The design has advanced dry lubrication bearings, resulting in high purity vacuum. In the course of the work almost no vibration is felt.
There are 5 models with a capacity (depending on the type of gas) 59.0 ... 2050.0 l / s and a compression ratio up to 1011. The limiting pressure is 10-10.
Pros:
- high speed: in its class, with their own dimensions, the devices are considered the best in the world;
- reliability: the rotor suspension is designed to provide minimal noise and maximum load stability of the bearings;
- efficiency: the highest compression ratio;
- improved design: due to reduced dimensions, compatibility with other systems is improved;
- reliability, ease of operation, lack of need for maintenance, long service life.
Minuses:
- expensive: for example, Agilent TwissTorr 304 FS costs ≈ 600 thousand rubles;
- few models in the lineup.
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