Automated processes are standard apply in the food trade. Production efficiency isn’t the only motivation, hygiene additionally performs a key role in the food business. We met with DEPRAG SCHULZ GMBH u. CO. Product Manager Dagmar Dübbelde to debate the method to design a drive to meet these necessities and incorporate each these targets.
Question: How are high requirements of hygiene met by DEPRAG?
Answer: In order to make certain that the right drive is chosen to fulfill the excessive requirements for hygiene in the meals trade, we normally advocate our ADVANCED LINE air vane motors. All their exterior parts are created from stainless-steel and are impervious to regular cleaning agents. The clean surface of those air motors is straightforward to scrub. The drives are so nicely sealed with sturdy long-life radial shaft seals that no air can escape and equally no dust, water or different solutions can penetrate the motor. The motors are even proof against water penetration from commonly used cleaning spray techniques. A moist environment is not any concern for this motor. It may even be used underwater as within the case of many stirring purposes. All our ADVANCED LINE chrome steel motors are lubricated with food grade USDA-H1 grease and may be operated oil-free. A energy reduction of approx. 10-20% primarily based on the technical data acknowledged in the product catalog ought to be taken into consideration when designing drives for oil-free operation.
Question: Does an air motor need to boast other features for such applications?
Answer: Yes. In many applications, condensation can form in air supply traces. It is subsequently advisable that measures are taken to ensure that the motor isn’t positioned at the lowest point in the system and that it could be flushed out with water. Many users take precautionary measures, not solely regarding the layout of the motor in their system, but also regarding the use of water separators or dryers in front of the drive. If all this isn’t possible, then we suggest a special coating for these elements throughout the motor’s interior which are produced from stainless steel. This is because there’s a restrict to the usage of stainless-steel for heavy responsibility, high-speed inner components. This so-called CWL coating supplies insensitivity to corrosion.
Question: Do you’ve any examples of the place your motors can be utilized within the meals industry?
Answer: Stirring dough, moving and slicing sheets of dough, rotating pork stomach skewers, mixing sausage meat or unwinding sausage skins, the meals trade purposes are endless. I’ll describe a number of applications in more element, similar to using our ADVANCED LINE air motor in an agitator for the production of fruit juice. Our 300W air motor drives a propeller stirrer in a magnetic agitator on the speed of seven hundred rpm.
We even have the best drive for high-torque requirements in industrial agitators: Our ADVANCED LINE high-torque motors generate immense energy within the smallest of areas. The 900W high-torque motor with a nominal pace of 22 rpm overcomes a starting torque of 585 Nm and has a maximum diameter of 63 mm.
Another utility may be found in grinding mills and conveying systems for grain processing. In this case, the focus is on mud generation and explosion prevention. All our ADVANCED LINE motors are ATEX certified for use in doubtlessly explosive environments. You will even discover our motors used within the processing of meat, for instance in a semi-automatic meeting system for the manufacture of kebab skewers. In the skewer unit, two air motors are used to drive belts which pierce a picket skewer through items of meat, onion and pepper. Pressure at the skewer is 38 kg and due to this fact a high-power air motor with compact design is ideally suited to this application.
Question: What benefits does an air motor have over an electric motor in such applications?
Answer: There are many arguments in favour of utilizing an air motor: One of the primary advantages is its excessive power density. Depending on the design, an air motor has solely a fifth of the mass of an electric motor, or a third of its measurement. This is especially vital when utilizing a handheld gadget but in fact additionally for robotic systems the place the drive strikes with the robot arm.
Heat additionally leaves the air motor chilly. In critical settings, compressed air is an unproblematic supply of vitality – it doesn’t compare to the hazards of electricity. The power output from the air motor over wide torque ranges is almost fixed. Air motors can subsequently be optimally operated in a wide subject of fluctuating masses. There isn’t any downside with load being utilized on the air motor until standstill, no damages are incurred. This means it’s much less apt to stalling. After reduction of the load, it will run once more instantly and any variety of successive occasions. Air motor power could be tailored just by adjusting the operating strain. The velocity is reduced smoothly by throttling the air quantity. Throttling supply air is beneficial when torque should also be significantly lowered. Exhaust air throttling ought to be chosen to cut back pace without any serious affect on the torque.
Question: Air motors are often seen to be much less efficient compared to electrical motors. Can you comment on this statement?
Answer: Air motors and electrical motors can’t be compared on a one-to-one basis. Confidential of a drive all the time is dependent upon the circumstances of the applying. Let me use this instance to clarify: A motor which reaches speeds of 450 rpm is needed for a packaging machine. 25 Nm torque is applied at reduced speed over a long period of time to safe the packaging tape. Electric motors cannot be loaded over an extended time frame without operating the risk of overheating. Therefore, for this packaging machine, an electric motor would wish to withstand high masses and consequently would need to be 1170W (25 Nm x 450 rpm divided by 9550). It is a totally different story with the air motor: Due to the favourable torque characteristics of air motors, a lower-powered drive will suffice. You could choose an air motor with a nominal torque of 15 Nm and nominal speed of 275 rpm. Since the working torque is below that of the nominal torque, the air motor runs close to idle pace at 450 rpm beneath mild load. The energy required for this air motor is therefore only 430W. The power stability of an air motor is seen in a completely completely different light when you assume about that the air motor wanted for this packaging machine would only require a third of the ability of an electrical motor.
Question: DEPRAG SCHULZ GMBH u. CO. can replicate on a long time of experience within the field of air motors. They have a broad range of excessive quality, globally well-liked industrial drive options. Are the ADVANCED LINE motors a special answer for meals industry applications?
Answer: It is true that our engineers have continued to optimise our air motors over the decades and our commonplace program has been adjusted to fulfill the wants of our customers. The ADVANCED LINE motors belong to our DEPRAG catalog program. Our customers profit from long-established reliable drive options for the food business and medical expertise. We are in a position to offer these motors in a wide energy vary from 20 W to 1.6 kW combined with a wide range of planetary gears from our personal manufacturing with speeds of seven to 24,000 rpm. This excellent spectrum of stainless-steel motors has made us a market chief on this section. You can find the perfect answer for each performance requirement. Thanks to our growth specialists and a excessive stage of vertical integration, we’re in a place to react flexibly to buyer necessities, when a sure design, such as a selected flange connection or special spindle request, isn’t out there off the shelf. 85% of our manufactured drives are customer-specific solutions based on commonplace elements.
The development and building of top of the range air motors is one of the main areas of experience at DEPRAG. The specialists in air motors, screwdriving technology, feeding know-how, automation, air instruments and Green Energy turbines have round 760 employees in over 50 countries. DEPRAG is a market-leading manufacturer of air motors with a formidable range of top quality stainless steel drives and innovative generators. The owner-run household business presents a various vary of options inside their commonplace program. These particular person drive options can be developed and manufactured at a beautiful price-performance ratio as a end result of the modular construction system. www.deprag.com
ADVANCED LINE Air Motors
Ideal motors for prime standards of hygiene
Press Contact and Head of Marketing:
DEPRAG SCHULZ GMBH u. CO.
Carl-Schulz-Platz 1
92224 Amberg
Germany
Claudio Seidel
Tel.: 09621 371-243
Email: presse@deprag.de
Internet: www.deprag.com
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