Vacuum Generators
Explore the Different Types of Vacuum Generators
Vacuum generators are a crucial component of any vacuum lifting system, providing the required vacuum to handle and lift objects. These generators can be created using either electrical or pneumatic means.
In electrical vacuum generators, vacuum pumps and vacuum blowers are the most commonly used tools to produce varying levels of vacuum. While a vacuum pump generates a higher level of vacuum, it has a relatively lower air flow rate. In contrast, a vacuum blower can produce a lower level of vacuum, but has a higher air flow rate. For pneumatic vacuum generators, ejectors are the most commonly used devices to create a vacuum using compressed air.
A vacuum reservoir also plays a crucial role in vacuum lifting systems, especially when using vacuum generators to handle and lift objects. Vacuum reservoirs are essential for maintaining a consistent level of vacuum generated from vacuum generator, which is especially important in applications that require precision and control. Vacuum reservoirs can be designed to work with both electrical and pneumatic vacuum generators. By providing a reserve of vacuum, a vacuum reservoir ensures that there is always enough vacuum available to handle the lifting and handling of objects, regardless of any fluctuations in vacuum levels.
Electrical Vacuum Generators
Vacuum Pumps
Vacuum pump is a classic vacuum generators that are able to generate differential pressure in a sealed space (similar to a compressor) which is frequently applied in glass handling suction cups vacuum lifting system. This generates a relatively high final vacuum (max. 99.9%). There are various designs. Dry-running and circular oil lubricated rotary vane pumps, claw pumps, liquid ring and screw pumps. Rotary vane pumps and claw pumps are the most reliable pumps in handling technology. The first pump was invented by Otto von Guericke. He also used it to study the phenomenon of vacuum and the role of air in combustion and respiration.
Most common types of vacuum pumps are:
Dry-running pumps
A dry-running rotary vane vacuum pump operates by the same way as an oil-lubricated vacuum pumps but with no lubrication fluids. To maintain proper system temperature, a powerful cooling fan is necessary to remove heat from both the motor and pump. Dry-running pump is overall good for universal use. It works good on large handling system for workpieces with air-tight surface.
Oil-lubricated pumps
An oil-lubricated rotary vane pump comes with extremely high vacuum level with up to 95% vacuum. And it is widely used in handling systems with low degree of noise and low maintenance needed. To ensure high level of vacuum, it works perfectly in air-tight workpieces.
Main advantages of a rotary vane vacuum pump are:
- High efficiency: Rotary vane vacuum pumps are known for their high efficiency, which makes them ideal for applications that require a high level of vacuum. They are able to achieve a very low pressure in a short amount of time, which can improve overall productivity.
- Low maintenance: Rotary vane vacuum pumps are designed to be low maintenance, with only routine maintenance required to keep them functioning properly. This makes them a cost-effective choice for many industrial and commercial applications.
- Versatility: Rotary vane vacuum pumps are suitable for a wide range of applications, including vacuum packaging, material handling, and laboratory experiments. They are also available in a variety of sizes and configurations, which makes them suitable for use in both large and small-scale applications.
Vacuum Blowers
The side channel blower and compressor are commonly used as vacuum generators to create a differential pressure that can move large volumes of air, much like a vacuum cleaner. These devices typically generate a low level of underpressure, up to a maximum of -450 mbar.
There are two main types of vacuum blowers available on the market: single-stage and double-stage blowers. The main difference between the two is the level of underpressure that can be achieved. Single-stage blowers can create a maximum underpressure of -250 mbar, while double-stage blowers can achieve a maximum underpressure of -450 mbar.
Main advantages of a vacuum blower are:
- High suction capacity: Vacuum blowers are capable of generating high levels of suction, which makes them ideal for handling porous materials such as wood or paper.
- Energy efficiency: Many vacuum blowers are designed to be energy-efficient, which helps to reduce operating costs and minimize environmental impact.
- Versatility: Vacuum blowers are available in a variety of configurations, which makes them suitable for a wide range of industrial and residential applications. They can be used for tasks such as material handling, pneumatic conveying, and vacuum packaging.
Pneumatic Vacuum Generators
Ejectors: Easy-to-install vacuum generators with in-field compressor
A vacuum ejector is one of vacuum generators that generates negative pressure by high-pressure air flow. And that therefore has a predominantly sucking effect thanks to Bernoulli’s Principle which states: ‘When the speed of a fluid increases its pressure decreases and vice versa’. The simple design of the main body, venturi nozzle and also the silencer make it low maintenance and wear-resistant.
However, the required high compressed air consumption is relatively more expensive to operate. Due to their small size, vacuum ejectors are commonly used in limited space such as for the packaging industry.
Main advantages of a vacuum ejectors are:
- High suction capacity: Vacuum blowers are capable of generating high levels of suction, which makes them ideal for handling porous materials such as wood or paper.
- Energy efficiency: Many vacuum blowers are designed to be energy-efficient, which helps to reduce operating costs and minimize environmental impact.
- Versatility: Vacuum blowers are available in a variety of configurations, which makes them suitable for a wide range of industrial and residential applications. They can be used for tasks such as material handling, pneumatic conveying, and vacuum packaging.
Vacuum Reservoir Series BVR
A vacuum reservoir is a container used in vacuum systems to store a reserve of vacuum. It works by storing the vacuum generated by a vacuum generator, such as a vacuum pump or vacuum blower, which can be used when the demand for vacuum is higher than what the generator is currently producing. This is especially important in applications where a consistent level of vacuum is required, as it can help maintain a stable vacuum level even when the demand for vacuum fluctuates.
The size and shape of a vacuum reservoir can vary depending on the specific application requirements. They are commonly made of stainless steel or other durable materials that can withstand the vacuum pressure. Some vacuum reservoirs are also equipped with pressure sensors or gauges to monitor the level of vacuum within the reservoir.
In addition to maintaining a consistent vacuum level, a vacuum reservoir can also help reduce energy consumption by allowing the vacuum generator to operate at a lower capacity. This can help prolong the life of the generator and reduce maintenance requirements.
In a complete BVR Series vacuum tank, a vacuum filter, vacuum gauge and ball valve are installed. Additional non-return valve can help prevent the vacuum from flowing back through the vacuum pump. There are a wide range of volume available from 15 Liter to 200 Liter. Vacuum generators can even be attached on top of the vacuum reservoirs to reduce working space needed.
- Buffer to cover peak loads
- Safety device in case of sudden power failure
- Material: sheet steel
- Surface: powder-coated in standard colour: RAL7035 – light grey