Turbo Pump
Zhejiang Yingpa Electromechanical Co., Ltd
InPowerVac since 2000,currently mainly produces and sells rotary vane vacuum pumps, dry screw vacuum pumps, Roots vacuum pumps, and vacuum units. At present, the company has 92 sets of processing equipment, including 30 sets of imported processing equipment. It has complete inspection and monitoring equipment, material tensile physics laboratory, vacuum testing room, dynamic balance laboratory, three coordinate and other high-end equipment.
Why Choose Us?
Advanced Equipment
InPowerVac has been committed to the research, development, production, sales, and maintenance and installation services of vacuum equipment, providing highly reliable vacuum products and solutions in fields such as lithium batteries, semiconductors, power, new materials, glass, laboratory instruments.
Factory
InPowerVac currently has two production bases in Zhejiang and Hebei. In 2023, we will purchase another production plant in Taizhou, Zhejiang, covering an area of squa70000 re meters.
Rich Experience
We are constantly developing and optimizing our company's products, and we always insist on creating value for our customers, especially in some special fields.
Professional Team
With the precipitation of time and persistence in quality, inPowerVac now has a number of mature production lines and continuous technological innovation capabilities, and is determined to become a leader in vacuum technology in China and even in the world.
A dry vacuum pump is a type of pump that does not require any oil or other lubricants to operate. Instead, it uses a mechanism that relies on the movement of the vanes or rotors to create a vacuum. The vanes or rotors are located inside the pump's chamber and rotate at high speeds to create a vacuum. As the vanes or rotors rotate, they trap the air and other gases inside the chamber, and then expel them through the exhaust port.
Dry vacuum pumps are non-contact vacuum pumps that feature oil-free, liquid-free sealing. They achieve a clean vacuum without back-flow or diffusion of water and oil. No regular maintenance, such as replenishing or replacing water or oil, is required, which makes these pumps easy to handle.
Benefits of Dry Vacuum Pumps
Low Maintenance
Dry vacuum pumps require very little maintenance compared to other types of vacuum pumps. Since there is no oil or other lubricants involved, there is no need for regular oil changes or other maintenance tasks associated with oil-based pumps.
Energy Efficient
Dry vacuum pumps are more energy-efficient than oil-based pumps. Because there is no oil involved, there is less friction, which means less energy is needed to operate the pump.
Reduced Contamination
The fact that dry vacuum pumps don’t use oil is one of their key benefits. As a result, there is no chance that the vacuumed gas or liquid will become contaminated with oil. Dry pumps are the best option for processes where process purity is essential, such as semiconductor manufacturing or food packaging.
Quieter Operation
Oil-sealed vacuum pumps can generate noise levels of up to 90 decibels, which can be damaging to operators’ hearing. Dry pumps, on the other hand, operate more quietly, with noise levels of under 75 decibels. They are therefore perfect for settings like laboratories where noise levels are a concern.
Higher Pumping Speed
Pumping speeds for dry vacuum pumps are faster than those for oil-sealed pumps. This is because dry pumps do not experience oil backstreaming and have fewer restrictions on the gas flow. Dry pumps are the best choice for applications like vacuum drying or freeze drying because they can quickly reach deeper vacuums thanks to their higher pumping speeds.
Increased Safety
Oil leakage from oil-sealed vacuum pumps can be dangerous, especially in applications involving flammable gases or liquids. On the other hand, dry vacuum pumps are safer to use in such applications because they don’t use oil.

Industrial Dry Vacuum Pumps
Industrial dry vacuum pumps include: regenerative blowers, rotary lobe blowers, dry rotary vane vacuum pumps, and more recently dry single stage “claw” designs, and even newer screw designs. Most of these designs are limited in vacuum to about 15-24”HgV. If your process is dry air, free of solids, then these may be worth considering. If the process gases contain moisture, droplets or solids, taking caution is necessary.
Chemical Duty Dry Vacuum PumpChemical Duty Dry Vacuum Pumps
Solvents can be condensed and recovered on the discharge side of the vacuum pump. This makes this design a good choice for solvent recovery. All the chemical duty dry pumps can pull vacuum levels to 5 to .05 Torr depending upon the design. These advantages come at a relatively high cost, compared to other technologies. There are three major types of chemical duty dry vacuum pumps: screw, multi-lobe, and Claw.
Dry Claw Vacuum Pump
All the manufacturers say that their dry pumps can handle corrosive vapors, and this is true to some extent. Dry vacuum pumps are “dry”, so there is no natural internal flushing of the process out of the vacuum pump. Corrosives are “handled” by keeping them as vapors, and not allowing them to condense. You must use special caution when handling corrosives, using start-up and shut-down purge cycles, and while protecting the pump from process upsets. Coatings on the screw type dry vacuum pumps is advertised as offering corrosion protection. However, for some manufacturers, this offers limited protection because the coating is in reality a wear coating for manufacturing and not “pin-hole free”.
Initial Stage: The pump is started, and the rotor or scroll mechanism begins to rotate. This creates a low-pressure zone within the pump.
Inlet Stage: The low-pressure zone draws in the gas or vapor from the system or chamber through the pump’s inlet. The gas is then trapped between the rotor or scroll and the pump’s housing.
Compression Stage: As the rotor or scroll continues to rotate, the trapped gas is compressed and moved towards the pump’s outlet. This compression process increases the pressure of the gas.
Outlet Stage: The compressed gas is expelled through the pump’s outlet, creating a vacuum in the system or chamber. This continuous cycle of gas intake, compression, and expulsion allows the dry vacuum pump to maintain the desired vacuum level.
Dry vacuum pumps offer several advantages over traditional oil-sealed pumps. They eliminate the need for oil changes and reduce the risk of oil contamination in the vacuum system. Additionally, dry pumps are more reliable and require less maintenance compared to oil-sealed pumps. They are also more environmentally friendly as they do not release oil vapor into the atmosphere.
Semiconductor Industry
Used in the semiconductor industry, where cleanliness and low contamination are critical. They are used to create a vacuum in the deposition chambers during the manufacturing process of microchips.
Medical Industry
Used in the medical industry, particularly in the production of medical devices such as pacemakers, catheters, and other implantable devices.
Food Industry
The food industry also uses dry vacuum pumps in the production of various food products, such as freeze-drying and packaging.
Environmental Industry
In the environmental industry, dry vacuum pumps are used for air sampling, soil remediation, and wastewater treatment.
Research and Development
Used in research and development applications, such as in laboratories for creating a vacuum in experiments.
Chemical Industry
Used in the chemical industry for distillation, drying, and other processes that require a vacuum.
Power Generation
Used in power generation industries, particularly in nuclear power plants, for various applications such as cooling towers, steam turbines, and others.
Motor: The motor provides the power needed to operate the dry vacuum pump. It is responsible for driving the rotation of the vanes or scrolls, creating the vacuum pressure.
Seals and Gaskets: Seals and gaskets are crucial for maintaining the integrity of the vacuum system. They prevent any leaks that could compromise the vacuum pressure and overall performance of the pump.
Cooling System: Dry vacuum pumps generate heat during operation, and a cooling system is necessary to prevent overheating. This system may include fans, heat exchangers, or other cooling mechanisms to maintain optimal operating temperatures.
Control Panel: The control panel allows operators to monitor and control various parameters of the dry vacuum pump, such as speed, pressure, and temperature. It provides a user-friendly interface for efficient pump operation.

Dry vacuum pumps are a vital part of many industrial processes, yet they remain a mystery to most people. In this blog, we will provide an in-depth explanation on how Dry vacuum pumps work and their numerous benefits. We will first cover the basics, including the components of a screw vacuum pump and its working principle. Then, we will delve into the operation of Dry vacuum pumps and highlight key steps that you need to follow for optimal performance. We will also discuss the benefits of using Dry vacuum pumps such as easy maintenance, quiet operation, wide operating range, and reliable performance. Lastly, we will explore some of the most common industrial applications of Dry vacuum pumps, including steel degassing, vacuum furnaces, and vacuum coating. If you're looking to buy a screw vacuum pump, we'll also provide guidance on where to get one.
How to Maintain Dry Vacuum Pump
Cleanliness is Key
Regular cleaning of your dry vacuum pump is vital. Dirt, debris, and other contaminants can significantly impair the pump's performance. Make sure to clean the external surfaces of the pump and any filters or vents as per the manufacturer's instructions. This prevents overheating and maintains optimal efficiency.
Ensure Instrument Integrity
The instruments that drive the pump process, such as gauges, valves, and switches, must be checked regularly. These components are essential for the proper operation of your vacuum pump and should be inspected for signs of wear or damage. Immediate replacement or repair of faulty instruments ensures the pump operates smoothly.
Listen for Abnormal Noise
Unusual noises from your pump, such as grinding, banging, or whining, can be early indicators of mechanical issues. Identifying and resolving these noises early can prevent more severe damage and extend the pump's lifespan.
Quarterly Greasing or Oil Change
Adhere to a strict schedule for greasing or changing the oil, typically on a quarterly basis, or as recommended by the manufacturer. Regular lubrication prevents wear and tear, ensuring that all moving parts operate smoothly.
Inspect All Bolts and Fasteners
Check the tightness and condition of all bolts and fasteners. Loose bolts can lead to misalignment and uneven wear, significantly impacting performance and causing potential safety issues.
Ensure Efficient Cooling Circulation
Monitor the delta temperature between the pump's inlet and outlet to assess the cooling circulation efficiency. Proper cooling prevents overheating, maintaining the pump's performance and preventing thermal damage.
If the operating temperature of the pump is too high for the process being performed, undesirable reactions like polymerization and auto-ignition can occur. To prevent this, high bearing temperatures or thermal seizure may be added as add-on instrumentation.
Although internal coatings can reduce some of the above effects, they should not be relied upon. While coatings are great for protecting the pump during installation and commissioning, they will not last long in the vacuum and temperatures where the pumps spend the majority of their time. Thus Everest has come up with special alloy steel rotors which are ENP plated for longer lifespan. Everest has also developed stainless steel screw rotors that are becoming very popular in corrosive operating environments.
It is important to make sure that process vapours remain in the vapours phase (Green area) as shown in the figure below. There are several ways to make sure this happens: temperature/flow control for the pump coolant; nitrogen purge to increase process dew point; and inlet condensers that remove vapor upstream from the pump.
Additional features can be added to the pump system in order to increase reliability and address system problems. A solvent flush system is one example to ensure that the pumping mechanism remains clean and free from any contaminants.
Our Factory
In 2019, inPowerVac conformed to the times, completed the handover of new and old leaders, started its own brand global trade and brand strategy, established the inPowerVac brand, and began to sell in the global market. Although we are constantly innovating, we still insist on producing high-reliability vacuum products.




FAQ
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