Solution Description
Screw vacuum pump is the use of a pair of screw, manufactured in the pump shell synchronous substantial-speed reverse rotation of the effects of the suction and exhaust and suction gadget, it is the upgrading creation of oil seal type vacuum pump, to pump in addition to made up of a big quantity of water vapor and a tiny amount of dust fuel occasions, in the domestic pharmaceutical industry, chemical business, larger demands for cleanse vacuum of businesses this kind of as semiconductor discipline extensively used.
Two screw good dynamic balancing correction, and is supported by bearings, is set up in the pump shell, amongst screw and screw has a certain gap, so the pump is working, no friction between every other, smooth operating, low sound, doing work cavity with out lubricating oil, consequently, dry screw pump can pump in addition to made up of a big sum of h2o vapor and a little amount of dust gas events, limiting vacuum is greater, reduce energy usage, It has the rewards of vitality preserving and upkeep free. It is the replacement of oil seal vacuum pump.
All types of vacuum pump increasingly below the influence of vacuum programs, the improvement of common vacuum program cannot meet up with the requirements of thoroughly clean oil and corrosion resistance, so the dry vacuum pump industry in great desire in modern a long time, vacuum items upgrading predicament, have a great deal of oil vacuum technique has been changed by oil totally free clean vacuum system. Nearly each and every big vacuum firm abroad produces different varieties of dry vacuum pumps. Screw vacuum pump belongs to non-speak to dry pump, is a type of perfect pump appeared in the early 1990s, with its broad pumping pace assortment, straightforward and compact structure, pumping chamber components without having friction, long existence, reduced power usage, no oil pollution and other advantages can be widely utilized.
Thanks to its outstanding functionality, dry screw vacuum pump has turn into the desired vacuum acquisition products in microelectronics, semiconductor, pharmaceutical, precision processing and other industries in Europe, The usa and Japan. Based on screw compressor, Japan designed prolonged rotor profile of vacuum pump really early and place it into the market. Many vacuum products businesses in Germany have also slowly produced equivalent pitch and variable pitch rotor profiles, and accomplished a whole lot of analysis on rotor and entire body cooling. In 2008, Chinese enterprises also set screw vacuum pump production into mass production, which has been effectively used in chemical and pharmaceutical industries
The push shaft is related with the energetic rotor, which is pushed by the synchronous gear to rotate the pushed rotor. The cooling h2o channel is opened on the shell to awesome the temperature of the rotor and the exhaust port. The synchronous equipment and the bearing are lubricated with oil, and the bearing and the shell are sealed by seals to accomplish the impact of no oil. Dry screw vacuum pump with oil-totally free screw compressor in the sealing and lubrication composition is comparable, the standard vacuum pump exhaust conclude with mechanical seals, intake aspect is usually double-lip seal. In the transmission manner, the general is the direct motor, with a coupling and rotor relationship, extremely handful of with a belt or drive chain transmission. Continual pitch screw pump owing to no inside compression method, the exhaust temperature is extremely high, these kinds of as the cooling impact is not good, will result in the deformation of the rotor and shell, impact the pumping effect. Cooling the casing is an vital website link, drinking water cooling is the most common technique, in the casing physique, the outer bearing by way of the cooling drinking water, can achieve the objective of cooling the casing and then cooling the rotor.
Comparable to screw compressor, screw dry vacuum pump perform process can be divided into suction, compression and exhaust 3 procedures. As the rotor rotates, each and every pair of meshing tooth successively completes the same functioning cycle, now illustrated by 1 pair of enamel.
Breathe in process
The positive rotor rotates counterclockwise and the unfavorable screw rotates clockwise. The upper rotor finish encounter is the suction part, and the lower end experience is the exhaust conclude encounter.
The compression process
Flip to the conclude face is the exhaust stop experience. Right here, the Yang rotor rotates clockwise and the Yin rotor rotates counterclockwise. The higher rotor stop experience is the suction part, and the reduce stop face is the exhaust conclude confront.
Exhaust approach
Screw pump exhaust procedure, the volume amongst teeth and exhaust orifice related, that is, the exhaust procedure began. With the ongoing reduction of the volume in between the tooth, the gas with exhaust pressure is gradually discharged through the exhaust orifice.
The performance traits of
1. There is no medium in the working chamber, so a clean vacuum can be received
two, the surface of the doing work cavity and screw rotor has anti-corrosion coating, can adapt to poor doing work problems
three, the fuel in the pump without compression, suitable for extraction of coagulable gas
four, a one pump can be pumped from the environment to 1Pa, vacuum technique can be greatly simplified.
five. Drinking water temperature has minor affect on vacuum, conserving drinking water over 90%, and even does not eat water.
6, no oil use, no dripping
7, no friction among rotating areas, high speed procedure, small measurement
eight. Straightforward composition and handy servicing.
9, the pumped gasoline is immediately discharged from the pump physique, no air pollution of water, no environmental pressure, more hassle-free gas restoration.
ten, with roots pump, molecular pump composed of oil-free unit
| MODEL | Unit | LGB90 | LGB120 | LGB180 | LGB250 | LGB350 | |
| Speed of suction | L/S | ninety | one hundred twenty | a hundred and eighty | 250 | 350 | |
| m3/hr | 324 | 432 | 648 | 900 | 1260 | ||
| Ultimate stress | Pa | ≤20 | ≤10 | ≤10 | ≤10 | ≤10 | |
| Motor electricity | Frequency | Hz | 50 | fifty | 50 | fifty | 50 |
| Voltage | v | 380 | 380 | 380 | 380 | 380 | |
| Rated electricity | kw | seven.5 | 11 | 15 | 18.5 | 22 | |
| Connection | Inlet | mm | DN50 | DN65 | DN100 | DN100 | DN150 |
| Outlet | mm | DN40 | DN50 | DN65 | DN65 | DN100 | |
| Cooling water | Joint | G1/2″ | G3/4″ | ||||
| Flux | L/min | 12~fifteen | 15~twenty | ||||
| Strain | Mpa | 0.1-. | |||||
| Temperature | ºC | ≤25 | |||||
| Nitrogen | Force | Mpa | 0.05-.ten | ||||
| Sealed flux | L/min | 2-5 | |||||
| Purge flux | L/min | 60-80 | |||||
| Swift plug connector | 12mm pipe | ||||||
| Force regulating valve | Japan SMC | ||||||
| Water vapor | Pressure | Mpa | 0.fifteen-.two | ||||
| Purge flux | L/min | According to layout | |||||
| Quck plug connector | 12mm pipe | ||||||
| Weight | kg | 340 | 365 | 600 | 648 | 1380 | |
| Noise | dB(A) | 75 | 75 | 75 | eighty | 80 | |
|
US $5,000 / Set | |
1 Set (Min. Order) |
###
| After-sales Service: | One Year |
|---|---|
| Warranty: | One Year |
| Screw Number: | Double Screw Pump |
| Screw Suction Method: | Single Suction |
| Pump Shaft Position: | Vertical |
| Performance: | No Leak |
###
| MODEL | Unit | LGB90 | LGB120 | LGB180 | LGB250 | LGB350 | |
| Speed of suction | L/S | 90 | 120 | 180 | 250 | 350 | |
| m3/hr | 324 | 432 | 648 | 900 | 1260 | ||
| Ultimate pressure | Pa | ≤20 | ≤10 | ≤10 | ≤10 | ≤10 | |
| Motor power | Frequency | Hz | 50 | 50 | 50 | 50 | 50 |
| Voltage | v | 380 | 380 | 380 | 380 | 380 | |
| Rated power | kw | 7.5 | 11 | 15 | 18.5 | 22 | |
| Connection | Inlet | mm | DN50 | DN65 | DN100 | DN100 | DN150 |
| Outlet | mm | DN40 | DN50 | DN65 | DN65 | DN100 | |
| Cooling water | Joint | G1/2" | G3/4" | ||||
| Flux | L/min | 12~15 | 15~20 | ||||
| Pressure | Mpa | 0.1-0. | |||||
| Temperature | ºC | ≤25 | |||||
| Nitrogen | Pressure | Mpa | 0.05-0.10 | ||||
| Sealed flux | L/min | 2-5 | |||||
| Purge flux | L/min | 60-80 | |||||
| Quick plug connector | 12mm pipe | ||||||
| Pressure regulating valve | Japan SMC | ||||||
| Water vapor | Pressure | Mpa | 0.15-0.2 | ||||
| Purge flux | L/min | According to design | |||||
| Quck plug connector | 12mm pipe | ||||||
| Weight | kg | 340 | 365 | 600 | 648 | 1380 | |
| Noise | dB(A) | 75 | 75 | 75 | 80 | 80 | |
|
US $5,000 / Set | |
1 Set (Min. Order) |
###
| After-sales Service: | One Year |
|---|---|
| Warranty: | One Year |
| Screw Number: | Double Screw Pump |
| Screw Suction Method: | Single Suction |
| Pump Shaft Position: | Vertical |
| Performance: | No Leak |
###
| MODEL | Unit | LGB90 | LGB120 | LGB180 | LGB250 | LGB350 | |
| Speed of suction | L/S | 90 | 120 | 180 | 250 | 350 | |
| m3/hr | 324 | 432 | 648 | 900 | 1260 | ||
| Ultimate pressure | Pa | ≤20 | ≤10 | ≤10 | ≤10 | ≤10 | |
| Motor power | Frequency | Hz | 50 | 50 | 50 | 50 | 50 |
| Voltage | v | 380 | 380 | 380 | 380 | 380 | |
| Rated power | kw | 7.5 | 11 | 15 | 18.5 | 22 | |
| Connection | Inlet | mm | DN50 | DN65 | DN100 | DN100 | DN150 |
| Outlet | mm | DN40 | DN50 | DN65 | DN65 | DN100 | |
| Cooling water | Joint | G1/2" | G3/4" | ||||
| Flux | L/min | 12~15 | 15~20 | ||||
| Pressure | Mpa | 0.1-0. | |||||
| Temperature | ºC | ≤25 | |||||
| Nitrogen | Pressure | Mpa | 0.05-0.10 | ||||
| Sealed flux | L/min | 2-5 | |||||
| Purge flux | L/min | 60-80 | |||||
| Quick plug connector | 12mm pipe | ||||||
| Pressure regulating valve | Japan SMC | ||||||
| Water vapor | Pressure | Mpa | 0.15-0.2 | ||||
| Purge flux | L/min | According to design | |||||
| Quck plug connector | 12mm pipe | ||||||
| Weight | kg | 340 | 365 | 600 | 648 | 1380 | |
| Noise | dB(A) | 75 | 75 | 75 | 80 | 80 | |
Select vacuum pump
When choosing a vacuum pump, there are several things to consider. Diaphragm, scroll and Roots pumps are available. These pumps work similarly to each other, but they have some notable differences. Learn more about each type to make the right decision for your needs. 
Diaphragm vacuum pump
Diaphragm vacuum pumps are very reliable and efficient for moving liquids. They are also compact and easy to handle. They can be used in a variety of applications, from laboratory workstations to large vacuum ovens. Diaphragm vacuum pumps are available worldwide. Advantages of this pump include low noise and corrosion resistance.
Diaphragm vacuum pumps work by increasing the chamber volume and decreasing the pressure. The diaphragm draws fluid into the chamber, diverting it back when it returns to its starting position. This hermetic seal allows them to transfer fluids without the need for lubricants.
Diaphragm vacuum pumps are the most efficient cleaning option and are easy to maintain. They do not produce oil, waste water or particles, which are common problems with other types of pumps. In addition, diaphragm pumps are low maintenance and have no sliding parts in the air path.
The simple design of diaphragm vacuum pumps makes them popular in laboratories. Oil-free construction makes it an economical option and is available in a variety of styles. They also have a variety of optional features. Diaphragm pumps are also chemically resistant, making them ideal for chemical laboratories.
Diaphragm vacuum pumps have speeds ranging from a few microns per minute (m3/h) to several m3/h. Some models have variable speed motors that reduce pumping speed when not in use. This feature extends their service interval. Standard diaphragm pumps are also popular in pharmaceutical and medical procedures. In addition, they are used in vacuum mattresses and cushions.
Scroll vacuum pump
Dry scroll vacuum pumps have many advantages over other types of vacuum pumps. Its compact design makes it ideal for a variety of general-purpose vacuum applications. They also offer oil-free operation. Additionally, many of these pumps feature chemically resistant PTFE components for increased chemical resistance.
These pumps are used in a variety of environments including laboratories, OEM equipment, R&D and medical applications. The single-stage design of these pumps makes them versatile and cost-effective. They are also suitable for a range of high field and radiation environments. Scroll pumps are also available in electronics-free and three-phase versions.
Oil-free scroll vacuum pumps are an excellent choice for those who don’t want the noise and mess associated with reciprocating pumps. Oil-free scroll pumps contain two helical scrolls interwoven in a helical motion that creates strong suction and directs steam to the exhaust. Because they do not require oil, they require minimal maintenance and downtime.
Oil-free scroll vacuum pumps are suitable for low to medium vacuum systems. Their durability and flexibility also make them suitable for many other applications. While they are often associated with dry vacuum pumps, they can also be used in chemical and analytical applications. Oil-free scroll pumps are also considered environmentally friendly.
The HiScroll range consists of three dry-sealed scroll pumps with nominal pumping speeds ranging from 6 to 20 m3/h. They feature advanced cutting edge sealing technology and reduce power requirements. They are also compact and noiseless, making them an excellent choice in quiet work environments. 
Roots Pump
Roots vacuum pumps are an important part of vacuum systems in various industries. These pumps are used to generate high vacuum in a variety of applications including degassing, rolling and vacuum metallurgy. They are also used in vacuum distillation, concentration and drying in the pharmaceutical, food and chemical industries.
These pumps are made of non-magnetized rotors that sit in the vacuum of the drive shaft. In addition, the stator coils are fan-cooled, eliminating the need for shaft seals. These pumps are typically used in applications involving high purity and toxic gases.
The theoretical pumping speed of a Roots pump depends on the gas type and outlet pressure. Depending on the size and power of the pump, it can range from 200 cubic meters per hour (m3/h) to several thousand cubic meters per hour. Typical Roots pumps have pumping speeds between 10 and 75.
Roots pumps are designed to reach high pressures in a relatively short period of time. This enables them to significantly reduce vacation time. Their compact design also makes them quiet. They also require no oil or moving parts, making them ideal for a variety of applications. However, they also have some limitations, including relatively high service costs and poor pumping performance at atmospheric pressure.
The RUVAC Roots pump is a versatile and efficient vacuum pump. It is based on the dry compressor roots principle already used in many vacuum technologies. This principle has been used in many different applications, including vacuum furnaces and vacuum coating. The combination of the Roots pump and the backing vacuum pump will increase the pumping speed at low pressure and expand the working range of the backing vacuum pump.
Electric vacuum pump
Electric vacuum pumps have many applications. They help move waste and debris in various processes and also help power instruments. These pumps are used in the automotive, scientific and medical industries. However, there are some important factors to consider before buying. In this article, we will discuss some important factors to consider.
First, you should consider the base pressure of the pump. Some pumps can reach a base pressure of 1 mbar when new, while others can reach a base pressure of 1 x 10-5 mbar. The higher the base pressure, the more energy is required to reverse atmospheric pressure.
Another important consideration is noise. Electric vacuum pumps need to be quiet. Especially for hybrid and electric vehicles, low noise is very important. Therefore, electric vacuum pumps with low noise characteristics have been developed. The pump’s integrated motor was developed in-house to avoid expensive vibration decoupling elements. Therefore, it exhibits high structure-borne noise decoupling as well as low airborne noise emissions. This makes the electric vacuum pump suitable for mounting on body components without disturbing vibrations.
Depending on the type of application, electric vacuum pumps can be used for workholding, clamping or clamping applications. They can also be used for solid material transfer. The electric pump with 20 gallon tank has a maximum vacuum of 26″ Hg. It also houses a 1,200 square inch sealed vacuum suction cup. It also has a coolant trap.
The automotive electric vacuum pump market was estimated at USD 1.11 billion in 2018. Electric vacuum pumps are used in automobiles for many different applications. These pumps provide vacuum assistance to a variety of automotive systems, including brake boosters, headlight doors, heaters, and air conditioning systems. They are also quieter than traditional piston pumps. 
Cryogenic vacuum pump
Cryogenic vacuum pumps are used in many different processes, including vacuum distillation, electron microscopy, and vacuum ovens. These pumps feature a thin-walled shaft and housing to minimize heat loss from the motor. They are also capable of high speed operation. High-speed bearings increase the hydraulic efficiency of the pump while minimizing heating of the process fluid. Cryopumps also come in the form of laboratory dewars and evaporators.
A key feature of a cryopump is its ability to span a wide pressure range. Typically, such pumps have a maximum pressure of 12 Torr and a minimum pressure of 0.8 Torr. However, some cryopumps are capable of pumping at higher pressures than this. This feature extends pump life and limits gas loading.
Before using a cryopump, you need to make sure the system is cold and the valve is closed. The gas in the chamber will then start to condense on the cold array of the pump. This condensation is the result of the latent heat released by the gas.
Cryogenic vacuum pumps are usually equipped with a Polycold P Cryocooler, which prevents the backflow of water through the pump. Such coolers are especially useful in load lock systems. As for its functionality, SHI Cryogenics Group offers two different styles of cryopumps. These systems are ideal for demanding flat panel, R&D and coating applications. They are available in sizes up to 20 inches and can be configured for automatic regeneration or standard settings.
The cryogenic vacuum pump market is segmented by application and geography. The report identifies major global companies, their shares and trends. It also includes product introductions and sales by region.
editor by czh 2023-01-13