Industrial Parts Cleaning
De-oiling under vacuum
In this process, the components to be cleaned are placed in a vacuum chamber and heated by radiant heaters. The process temperature and pressure are adjusted so that any contamination on the components is vaporized.
Relevant Products: Liquid Ring, Rotary Vane, Claw, Screw
Dry-blasting
In this process, the work piece is blow dried with a side channel blower. The flow volume and pressure of the air stream are critical for the degree of dryness. The temperature of the air stream also contributes to the effectiveness of the drying process.
Relevant Products: Side Channel
Flood injection washing under vacuum
In this process, the air is first evacuated from the washing chamber. A pressurized injection fluid wash (16 bar) also cleans hidden hollow passages and undercuts.
Relevant Products: Liquid Ring, Rotary Vane, Claw, Screw
Vacuum drying
With vacuum drying, difficult spots such as blind bore holes, narrow lubrication channels and even internal passage ways can be dried completely, with no residual water remaining in voids or uneven surfaces. In this process, a vacuum is created in the washing chamber. When the pressure drops below that of the vapor pressure of the fluid to be removed, the fluid evaporates and the parts are dried. Most of the vapor removed is trapped in a condensate separator upstream of the vacuum pump. The residual vapor in the air is eliminated by the vacuum pump. Depending on how dirty the parts are, a water or solvent based detergent is employed. In some cases ATEX approved vacuum pumps are required for solvent based detergents, which may be explosive in nature.
Due to the special properties of paper, vacuum and compressed air are essential features in paper manufacturing and processing.
Pre-Press
Applications
Vacuum is required for a variety of applications in the pre-press area, including preparing images and film for scanning or exposure and for copying printing plates. There are also many applications where over-pressure is needed as well, such as for guiding plates or film in automatic systems.
Relevant Products: Side Channel
Press
Printing applications
In classic sheet fed offset presses, vacuum and overpressure is always needed for paper handling – at the feeder to separate the sheets, to feed the single sheets to the different colour-aggregates or to guide the sheets through the machine. All these applications need different amounts of air at different pressures.
Relevant Products: Claw, Side Channel
Post-Press
Applications
There are a variety of applications in the post-press arena. For example, side-channel blowers for folding and cutting machines; pressure-vacuum pumps and individual vacuum pumps and compressors for collating and book-binding machines; and radial blowers for removing waste paper.
Relevant Products: Claw, Side Channel, Rotary Vane, Radial
Large volumes of compressed air and vacuum are required in the manufacturing process of hollow glassware. High quality and reliability of all units and components is of prime importance, because equipment failure during production invariably means extremely high costs. For continuous 24-hour operation, rotary vane compressors and vacuum pumps offer the best solution.
Compressed air is used to form the blanks in the production machines. A compressed air system is needed to control the various shaping devices and the general air supply of the factory.
Rotary vane vacuum pumps are used to evacuate the glass moulds. This ensures high product quality and increasing the number of pieces per hour poses no problem.
For higher volumes vacuum pump stands are used. These two-stage systems consist of a rotary lobe and rotary vane vacuum pump and are used in the production of electric light bulbs and fluorescent tubes.Large volumes of compressed air and vacuum are required in the manufacturing process of hollow glassware. High quality and reliability of all units and components is of prime importance, because equipment failure during production invariably means extremely high costs. For continuous 24-hour operation, rotary vane compressors and vacuum pumps offer the best solution.
Compressed air is used to form the blanks in the production machines. A compressed air system is needed to control the various shaping devices and the general air supply of the factory.
Rotary vane vacuum pumps are used to evacuate the glass moulds. This ensures high product quality and increasing the number of pieces per hour poses no problem.
For higher volumes vacuum pump stands are used. These two-stage systems consist of a rotary lobe and rotary vane vacuum pump and are used in the production of electric light bulbs and fluorescent tubes.
A variety of vacuum pumps and compressors are used in the woodworking industry. The pumps are also used in woodworking as central vacuum systems; to improve efficiencies; and to minimise costs associated with hook-ups and special foundations which are no longer needed.
Holding and lifting
To ensure safe processing, work pieces are automatically clamped to the processing table by means of suction heads. A stable and constant minimum vacuum must be generated to ensure that work pieces are held securely in place during mechanical processing.
Related Products: Liquid Ring, Claw, Side Channel, Rotary Vane
Preservation
Before or after processing, wood must be protected against the destructive effects of environmental influences such as heat, moisture, insects and micro-organisms. The practice of soaking the wood in a preservative solution is widespread, but has the disadvantage that the liquid penetrates only a few millimetres into the wood. Complete protection is possible, however, if the wood is degassed and dried with the aid of a vacuum pump. The preservative agent then penetrates much deeper and optimizes the protective effect.
Related Products: Liquid Ring
Wood drying
The use of vacuum dryers in conventional wood drying chambers can reduce a typical drying time from several weeks to a mere 3 to 4 days. During the drying process, pressure in the chamber is gradually reduced to the minimum. The chamber is pressurized with steam and the air is extracted to prevent cracks and colour changes in the wood that can be caused by too high an oxygen content. Radial fans circulate the steam and convey the heat to the wood. Further steam condensate will be exhausted from the drying chamber.
Related Products: Liquid Ring, Rotary Lobe
The use of vacuum and pressure in the plastics industry:
The manufacture of machines is closely bound up with the production and processing of plastics. Plastics manufacturers develop and produce optimized plastics for a variety of purposes. From these, the processor makes high quality products which are used in almost every industrial sector, from the automotive industry and telecommunications to the processed foods industry. Machine manufacturers are the technical link between production and processing. They produce the tools and machines which are required to convert the raw material into a plastic sheet, an electrical cable or a car bumper.
Non-food
Air cushion machines
Film tubes are inflated with compressed air and welded together to form cushions. These cushions can be used as protective filling material.
Relevant Products: Side Channel
Blister machines
Blister packaging is often vacuum generated.
Relevant Products: Liquid Ring
Evacuation
When bottling beverages, cosmetic or pharmaceutical products, the bottle is evacuated before being filled to make sure the product reaches the customer in good quality.
Relevant Products: Liquid Ring
Filling and closing units
Chamber machines
Place the product into a foil bag or tray
Insert the foil bag into the vacuum chamber
Close the cover
Generate a vacuum and seal the bag or
Feed inert gas and seal the bag
Rolling machines
Packing material for the bottom lane is pulled of the roll.
It is heated in the forming tool and formed into packaging moulds.
The packaging moulds are filled in by hand or automatically.
The top lane of the packing material covers the filled moulds.
In the sealing tool the air is extracted and if necessary modified atmosphere admitted. After this the sealing occurs by heat and pressure.
The packaging lane is cross cut.
After long cutting the packages are ready for dispatch.
Relevant Products: Liquid Ring, Side Channel
Forming
For vacuum forming, an additional pump is needed at that part of the machine.
Relevant Products: Rotary Vane
Non-food packaging
When packing products, prior to sealing a vacuum pump would be used to evacuate the air from the packaging. Correct packaging provides the best transportation protection and ensures that products such as electronic parts, pharmaceuticals, etc, can be shipped to the customer aseptically and free of dust.
Relevant Products: Rotary Vane, Screw, Side Channel, Liquid Ring
Production of paper bags
The L-Series is used for folding cement bags.
Relevant Products: Liquid Ring
Reduction of transport volume
Vacuum packaging of clothes. The brand new clothes are shrink-wrapped to be able to charge trucks and containers to maximum capacity.
Relevant Products: Side Channel
Tray sealing
Place the product into a foil bag or tray
Insert the foil bag into the vacuum chamber
Close the cover
Generate a vacuum and seal the bag or:
Feed inert gas and seal the bag
Relevant Products: Rotary Vane, Screw, Side Channel
Trim removal
The film strips that are cut off are sucked into a container with our radial fan range CEVF. The collected film strips can be recycled.
Relevant Products: Side Channel, Radial
Further applications
Palletising
Drying
Holding
In recent decades the food and beverage industry has undergone widespread changes from small to middle and large firms. The ensuing “industrialisation” of food processing has created many applications that use vacuum pumps and compressors.
Bottle filling machines in breweries
When beer is bottled, its residual oxygen content must be kept as low as possible. To this end, breweries employ two different methods, either singly or in combination:
Bottles are flushed with CO2 and filled with beer via a long-tube filler. In this case, the filler tube is inserted into the bottle and the bottle is flushed with carbon dioxide before actually being filled with beer. This method consumes a relatively large amount of CO2.
Bottles are evacuated and then flushed with CO2. This method greatly reduces carbon dioxide consumption because most of the oxygen is already extracted.
By reducing seal liquid consumption, L-Series circulation systems offer clear advantages over other liquid ring pumps.
Related Products: Liquid Ring, Rotary Vane
Chocolate production
During the production of chocolate eggs, vacuum is used in several production sections to hold the eggs in place and lift them up. The vacuum system is installed in a separate room and sucks the air-conditioned air from the production line. The vacuum at the machine is maintained at a constant pressure.
Related Products: Liquid Ring
Cleaning of vegetables
Vegetables are air-dried after washing. Sensitive vegetables are cleaned with compressed air only.
Related Products: Side Channel
Coffee roasting
The coffee beans are whirled around while being roasted to achieve a constant roasting result.
Related Products: Side Channel
Dairy processing
On yogurt filling machines the vacuum pump serves to position the lids on five pre-filled yogurt containers simultaneously. Suction cups on the machine grip the lids, separate them and move them into the correct positions.
Related Products: Liquid Ring, Side Channel
De-aeration of mineral water
Mineral water from natural springs contains carbonize acid, minerals and iron. The iron dissolved in the water oxidizes when it comes into contact with the air, giving the water an unpleasant taste. The water needs to be de-ferrized at a pressure of about 50 mbar, but first a vacuum pump is required to remove the carbonation and then reintroduce it to produce sparkling water.
Related Products: Liquid Ring, Side Channel
Deodorizing of salad oils and fats
Prolonged exposure to air gives salad oils and fats an unpleasant odor and flavor. Before they can be processed further, these oxidation products must be removed. This is accomplished by injecting steam, which absorbs the odor and flavor particles created, and then extracting the steam with a vacuum.
Products that monitor, analyze, store and recover materials that are harmful to our environment are becoming more sophisticated everyday. In addition, manufacturers worldwide are increasingly challenged with producing products in an environmentally sound environment. Gardner Denver can provide solutions for any challenge requiring pressure, vacuum or flow within the environmental arena.
Wastewater disposal
With the use of central vacuum systems the disposal of wastewater can be effected at the same place. The wastewater can be collected, drained and disposed of in complete housing areas at the same time. With the use of vacuum up to 97% of the wastewater can be transported uphill.
Related Products: Liquid Ring
Wastewater purification/oxygenation of activated sludge tanks
To reduce the space requirements and costs of wastewater treatment plants, a growing number of activated sludge tanks are being set up. The introduction of oxygen is extremely important for purifying wastewater. Compressors supply the compression pressure required for maximum oxygen yield.
Vacuum pumps and compressors are used in many applications in the chemical industries. Technologies used are dry running and oil lubricated rotary vanes, liquid ring and rotary screw pumps as well as ejectors. Engineered systems designed and built for our demanding customers assure safe and reliable operation.
Compressed air can also be found in numerous uses in this industry. Both oil lubricated and oil free compressors deliver a safe and reliable form of energy that can be used on both sensitive products and in hazardous environments.
Another product range is available for the safe transfer of chemical and petrochemical liquids in bulk at both standard and high pressure.
In demanding laboratory environments, technicians must rely on their equipment for dependable and accurate performance for a variety of critical functions, including the preparation of biological and chemical samples for analysis.
Compact, cost-effective vacuum pumps from Thomas and Welch provide a reliable, low-maintenance vacuum source for laboratory applications requiring distillation, drying and concentration.
In the pioneering age of pneumatic conveyance, demand was largely for transporting foodstuffs such as grain and flour. Today, such installations are constructed for a wide variety of uses, such as transporting
goods in dust particle form (flour, cement)
grain-type goods (dragées, granulate, pellets)
piece goods (pneumatic tube conveying systems) and
mixed goods.
Special requirements must be observed in these areas. Mixed goods, for example, may not be mixed with different size grains during transport. In addition, the goods should not rub together, which would cause abrasion. This is just as important for explosive granulate as it is for avoiding static electricity.
Pour-able goods can generally be transported with vacuum or pressurized air conveyance systems.
Suction conveyance systems
Our Machine Selection Tools offers assistance.
Relevant products: Side Channel, Liquid Ring, Rotary Vane, Claw
Biogas production
The biomass produced in activated sludge tanks and clarifying tanks is stabilized in the digestion tower and used to produce biogas. A thorough mixing of the sludge increases the gas yield and reduces its retention time in the reactor. In the process, the gas is withdrawn from the upper part of the digestion tower, compressed in the compressor and reintroduced through the nozzles at the bottom.
Related Products: Liquid Ring, Rotary Vane, Rotary Lobe, Claw
Biogas production
The biomass produced in activated sludge tanks and clarifying tanks is stabilized in the digestion tower and used to produce biogas. A thorough mixing of the sludge increases the gas yield and reduces its retention time in the reactor. In the process, the gas is withdrawn from the upper part of the digestion tower, compressed in the compressor and reintroduced through the nozzles at the bottom.
Related Products: Liquid Ring, Rotary Vane, Rotary Lobe, Claw
Our company has successfully partnered with the oil and gas industry’s refineries as well as upstream and offshore applications providing them with highly reliable and safe vacuum pumps/compressors and compressed air. We also deliver solutions for the safe loading and unloading of almost any liquid or compressed gas product from river barges, ships and ocean going super tankers.
