SMALL TURBINE MOLECULAR PUMP

Turbomolecular pump is a kind of high vacuum acquisition equipment, which is used to provide a clean high vacuum environment. It has been widely used in electronic industry, optical engineering, surface science and other fields. Small turbomolecular pumps, with their advantages of small size, light weight and low power consumption, are often used in equipment or instruments that require vacuum without emphasis on pumping speed, such as vacuum acquisition equipment as mass spectrometer and leak detector.

Turbine molecular pump takes impeller group as its pumping actuator. The impeller group consists of alternately arranged dynamic and static impellers. When the impeller rotates at high speed, its speed is close to the molecular thermal speed, while the static impeller remains stationary.

How To Prevent The Control Valve From Getting Stuck Or Blocked

Cleaning method:

The most common fault: the welding slag, rust, slag, etc. in the pipeline cause blockage or jam in the throttle hole, the guiding part, and the balance hole of the lower bonnet, causing strain and scratches on the curved surface of the valve core, the guide surface, and sealing. Indentations and the like are formed on the surface. This often happens in the early stages of the new commissioning system and after the overhaul.

In this case, it must be unloaded for cleaning, remove the slag, if the sealing surface is damaged, it should be ground; at the same time, the bottom plug is opened to wash off the slag falling into the lower bonnet from the balance hole, and rinsing the pipeline. Before commissioning, let the regulating valve open completely, and making the medium flow some time before the normal operation.

Double Stage Piston Vacuum Pump

The two-stage piston vacuum pump series is suitable for suction of air and other general gases. When using air ballast, the pump can suck a small amount of condensable gases (such as water vapor). Additional devices should be used when pumping gases with excessive oxygen content, explosive, corrosive to ferrous metals, and chemical reaction to vacuum oil. This type of pump can be used alone or as a pre pump for diffuser pumps, roots pumps and other high vacuum pumps. The pump is widely used in vacuum coating, vacuum heat treatment, vacuum impregnation, vacuum sintering, vacuum metallurgy, vacuum drying, molecular distillation.

Hybrid Molecular Pump

The Molecular Pump of Hybrid Molecular Pump covers almost all possible application fields. The unique design of electromechanical integration has the characteristics of high prestage pressure resistance and is suitable for the vacuum environment of 10-10-10 millibar.

The Molecular Pump of Hybrid Molecular Pump has the following remarkable advantages:
1. Rich product range: covering all possible applications and all aspects of the market.

2. Patented technology of Hybrid Molecular Pump: maximum pumping capacity; Increase the pre-stage pressure resistance to 18 bar; The compression ratio increases by several orders of magnitude.

3. Integral rotor: each rotor is made of a single piece of aluminum alloy, with a minimum weight; The molecular pump can operate at any Angle at 360 degrees without any adjustment, reducing the pressure applied to the material and bearing.

4. High reliability, maintenance-free ceramic bearings: oil free, pollution free; Mean time to failure is greatly increased.

5. The built-in controller can use navigation control: simple and space-saving configuration; Navigation software can be easily controlled and monitored remotely.

2BE1 Liquid Ring Vacuum Pump used in Truck

The work of a vacuum  tanker is hard and dirty. It exerts a lot of wear and tear on the materials, because it takes place in tough environments with tons of substances and liquids that may be inflammable or explosive. The suction task demands that the vacuum truck pump on the vehicle is as low-noise as possible when working in urban environments. It also has to be secure in service, highly dependable, have little impact on the environment and be able to run for years with little maintenance. These are highly challenging demands. But our liquid ring pumps meet them – and go further still.

Truck pumps Quality that lasts for years:

EVP have supplied quality pumps for vacuum tankers for 20 years. We are familiar with all current requirements and understand the importance of ensuring our products live up to the expectations of the owners and drivers of vacuum tankers. Our vacuum truck pumps are judged extremely competent when it comes to security of operation, low-noise factor and reliability. We also know that they operate for decades, almost without any type of service or maintenance. This means the vehicles on which they are mounted are not forced to return to base – at least not because of a problem with the truck pump.

A solution that is kind to the environment:

EVP pumps help to protect our surroundings and ensure a good work environment. 2BE1 liquid ring vacuum pump are based on water and therefore do not cause any pollution or oil damping. We consider it part of our job to ensure the necessary certifications are in place. They are available in left- and right-rotating versions. They can be installed with a hydraulic motor, belt drive or direct cardan drive.

Truck Pumps and accessories for vacuum trucks and tankers:

- Pumps from 65m3/h till 3.000m3/h
- ATEX approved
- 4-Way valves
- Weld flanges
- Water valves for service liquid control
- All pumps can be prepared for transmission and hydraulic drive

Our most sold pump for flex trucks is the legendary KS1025.  For special trucks in need of more capacity the KM2200 or KM2700 is the ideal solution. The powerful liquid ring vacuum pump allows large quantities to be processed fast and efficient.

DRY SCROLL VACUUM PUMP

Dry scroll vacuum pump is a new type of dry pump which has been popularized rapidly in recent years. Because of its superior performance, it is rapidly replacing the traditional oil seal rotary vane pump in vacuum field, especially in vacuum equipment for scientific research.

ADVANTAGES OF DRY SCROLL VACUUM PUMP:

Dry scroll vacuum pump is a kind of oil-free mechanical vacuum pump. It has the advantages of simple structure, large effective volume utilization coefficient, large compression ratio, stable pumping speed, high vacuum, small driving torque, small power change, low vibration noise, high reliability in a wide pressure range.


DRY SCROLL VACUUM PUMP PRINCIPLE:

The basic principle of the dry scroll vacuum pump is that the gas is compressed in the crescent compressor cavity composed of the vortex rotator and the vortex stator, the vortex stator is fixed on the periphery of the rack, an air inlet is opened on the periphery of the vortex stator, and an air outlet is opened in the center of the vortex rotator and the vortex stator. The vortex lines of the vortex stator and the vortex rotator are basically the same. The two phases are staggered 180 degrees. As a result, a series of crescent compression cavities are formed between the two vortices. When the vortex rotator rotates, one side of the crescent compression chamber moves toward the center, and its volume side continuously decreases, thus completing the suction, compression and exhaust process of the turbine dry pump.


With the rapid development of semiconductor, new materials and bio-pharmaceutical industries, the theory of vortex is becoming more and more mature, and people urgently need clean and oil-free vacuum environment.


Because of its superior performance, turbo-pumps have been widely used in many industries. Especially with the wide use of turbo-molecular pumps, composite molecular pumps and cryopumps, people are looking for an oil-free pre-vacuum pump that matches these completely oil-free high vacuum pumps requirement.

Circulating Water Cooling Device For Vacuum Unit

The water ring vacuum unit is mainly operated by roots pump and is made of water ring pump in series. The water ring pump selected by the water ring vacuum unit is more advantageous than other vacuum pumps, because it not only overcomes the limitation of pressure difference when a single water ring pump is used, but also keeps the low pumping rate under certain pressure, and at the same time, it also retains the advantages of rapid operation of the roots pump and relatively large pumping rate.

It can be used to extract a large amount of condensable steam, especially when the mechanical vacuum pump of gas-ballast oil seal is not capable of removing condensable steam, or the solvent used can deteriorate the pump oil and thus affect the performance, or the vacuum system does not allow oil pollution is more obvious. If equipped with explosion-proof motor and electrical appliances, and comply with the corresponding safety rules, it can also remove flammable and explosive gas.

Therefore, the water ring pump unit can be widely used in the chemical industry vacuum distillation, vacuum evaporation, dehydration crystallization, etc. Freeze-drying in food industry, etc. Vacuum drying in pharmaceutical industry, etc. Polyester chips of light textile industry; High – altitude simulation test such as the vacuum system medium.


Working principle of circulating water cooling device of vacuum unit:

Use a pump to pump water from the storage tank all the way to the sprinkler and all the way to the unit’s cooling water inlet.

Water in a spray the perforated plate effect hundred holes, many of the water to form a vertical downward. The water to the fan, under the action of surface evaporation and cooling, cooling and then back to the water storage tank. The distribution of holes on perforated plate decide the position of water column, let the perforated plate on the uniform distribution of holes, in order to make good contact with air water column, published form as large as possible yan noodles, so as to achieve the goal of water cooling.

Considering the degree of vacuum unit discharge of water falling off, with the air temperature difference is bigger, so the design of the first level of the use of air forced cooling, let vacuum unit discharge of water through the radiator, radiator, after the fan by cool wind blowing through the water to the radiator, so that the diffusion pump discharge hot water cooling, and then back to the water storage tank, in the cooling water flow in the diffusion pump can be directly observed in the device.