Knoll Maschinenbau GmbG

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The countdown for ProSweets in Cologne has started

Logo_ProSweetsJust a few more days and the ProSweets opens its doors. The international supplier fair for the confectionary industry takes place from 01st – 04th February 2015 in Cologne. The fair offers a lot of innovations and technologies for the production and packaging process of confectionary products.

The progressing cavity pump MX from KNOLL Maschinenbau satisfies the requirements and needs of this industry. Due to the compact design and the execution in EvenWall® technology, the MX offers gentle product transfer, outstanding pressure stability and exact dosing properties as well as a number of other advantages for applications in the confectionary industry.

Visit the ProSweets Cologne and convince yourself of the advantages of our progressing cavity pump MX. We look forward to your visit and welcome you on our booth C071 in hall 10.1.

If you would like to visit the ProSweets, but you don’t have tickets yet, please give us a call at +49 7581 2008-353 or send an e-mail to s.heudorfer@knoll-mb.de – we’ll provide you with free entry vouchers.

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KNOLL Maschinenbau wishes

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The brandnew animation of the KNOLL progressing cavity pump MX

The progressing cavity pump MX form KNOLL Maschinenbau characterized by it’s modular design and it’s serviceability is the perfect solution for your application.

 

Impressive appearance for the KNOLL progressing cavity pump – The MX as a suction pump

 

Apart from numerous applications in which hygienic aspects of the KNOLL progressing cavity pump MX play a central role, the MX can also used in an extremely beneficial manner in KNOLL’s core business. One new application is the use of the MX in KNOLL‘s in-house Test Centre. Here, KNOLL tests the operability of all cooling lubricants and conveying systems.

For the wet test, the tank on the installation to be tested is initially filled with cooling lubricant from a central collection tank. All pumps, valves and other installation components are set to meet customer-specific requirements. This means that the wet testing procedure takes place largely under real conditions. If the installation test is successful, the cooling lubricant is drawn off again by a vacuum suction unit into a vacuum tank. Thanks to its excellent suction performance, the MX is able to draw off the cooling lubricant continuously from the vacuum tank even at a negative pressure of -0.7 bar and to convey it into the sludge tank of the central collection tank.

Small dirt particles, e.g. welding debris, which may have entered the installation during the production process, are no problem at all to the MX. From the sludge tank, the cooling lubricant is then routed to the attached KNOLL filter for thorough processing. When the cooling lubricant has been filtered, the circuit closes and the purified cooling lubricant is available once again in the central collection tank for a further wet test.

Without the use of the MX, the vacuum suction unit would require a considerably higher tank capacity. The vacuum would also have to reduced regularly to ensure that emptying with a conventional pump is possible.

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The KNOLL “sugar worm” – the MX progressing cavity pump in action in the confectionary industry

sweetsConfectionary – who can resist the sweet temptation? On average, Germans eat 32 kg of sweets in a variety of forms every year. Hard candies are particularly popular, coming as they do in many different flavours.

The MX by KNOLL Maschinenbau is ideal for producing this well-loved confectionary. Hanover-based Hänsel Processing GmbH, a respected plant and systems supplier in the confectionary industry, has been happily using the MX progressing cavity pump for a number of years now.

Crucial factors for the customer are the hygienic design of the MX and its excellent cleanability. As with many plant constructors, the MX scores highly for its compact overall length which allows the pump to be integrated into the overall system in a space-saving way. The high dosing accuracy of the MX enables Hänsel Processing to fill exactly portioned batches of hard candy mass.

For this application, KNOLL uses a heated stainless steel double jacket for the MX as standard. This allows media such as toffee, fondant or jelly mass to be kept at a constant temperature and, thus, to be conveyed easily and gently. The uniform elastomer wall thickness of the EvenWall® stator provides good, even heat transfer between the double jacket and the medium. The uniform thermal expansion of the stator elastomer has a very positive effect on its useful life and, thus, on the productivity of the overall system.

Do you also work in the confectionary industry, and have we managed to arouse your interest in our “sugar worm”?
If so, please give us a call. It’s a safe bet that you’ll find a suitable KNOLL MX solution for your application in our product range.

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Why does KNOLL use a bearing block for the MX?

The MX progressing cavity pump by KNOLL offers product-conserving delivery, ease of servicing and virtually pocket-free design, as well as a string of other advantages.

KNOLL uses a bearing block in each of its progressing cavity pumps from the compact MX10 version to the XXL-sized MX100 version. This unique feature clearly sets KNOLL apart from its competitors.
By using a bearing block, we can supply the pump without a drive unit. The advantage here is that the customer receives a ready-to-use standby pump with no need for laborious shaft sealing unit assembly.

Bearing Chair MX20Another advantage is that the axial forces are absorbed by the bearing block and do not have to be factored into the design of the geared motor. This allows the use of smaller and more cost-efficient drive units.
A stainless steel-bearing block is standard on the MX10 and MX20 models, which means that KNOLL is able to supply these pumps entirely made from stainless steel. Used in combination with a stainless steel geared motor, the MX is the perfect solution for hygiene environments and similar applications because it can be cleaned easily and quickly.

Discover for yourself the advantages and performance of our progressing cavity pump MX and contact our sales representative. We will be happy to sit down with you and design a custom solution tailored to your application needs.

Merry Christmas and a successful New Year 2014

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KNOLL’s MX does not heat up even at 140 °C

The MX progressing cavity pump from KNOLL is used in many different areas, from the food and beverage industry to pharmaceuticals to the chemical industry. This pump also stands the test in extreme cases. This has been proven at Europe’s leading manufacturer of building shells, interior fittings, and insulation technology. Here, the MX is incorporated into the process of reclaiming fibrous plasterboard. It withstands temperatures of 140 ° C and an extremely abrasive fluid.

Progressing cavity pump MXWaste and remains of the plasterboard panels are relegated to a viscous suspension of approx. 500 mPas. Using the MX, this fluid is pumped back into a reactor before it is processed into new fibrous plasterboard. A challenge of this use is the high temperature of the fluid, 140 °C. Thanks to its special design, the MX performs well: the EvenWall® technology of the KNOLL stator guarantees even pressing even at high temperatures. This improves the durability of the stator considerably. Another challenge of the fluid is its abrasive character. The plaster suspension contains 10 – 15 µm particles with a concentration of 32 – 50 %. The MX also has the solution for this: a stator of wear-proof special elastomer for high temperatures as well as a specially-coated rotor, which also demonstrates wear-proof qualities despite the extremely abrasive fluid.

An additional benefit of the KNOLL MX progressing cavity pump is the even flow speed in the suction housing, which prevents sedimentation and thus the settling of the fluid. This is the result of the even diameter of the cardan joint and the pump’s design, which keeps the clearance volume low. Therefore, no fluid accumulations form on the joint or on the housing wall.

Rotary piston pumps were used for this process in the past, however without any success. After just a few weeks, the pumps had to be replaced due to wear. The MX progressing cavity pump from KNOLL has been used for six months already and shows no traces of wear.

Application of the KNOLL progressing cavity pump in the wastewater industry

A new application for the MX is the loading of chamber filter presses in the wastewater treatment sector.

A so-called feed pump feeds the sludge or suspensions into the cavities of the filter chamber, initially at zero pressure and at a high delivery rate. The pressure inside the filter chambers begins to rise when the solids form a layer upstream of the filter cloth. The speed of the feed pump, i.e. the delivery rate, decreases with rising pressure. The process medium is fed into the chambers at pressures of up to the set maximum of approx. 16 to 20 bar. The adjustment range of the feed pump should, because of the time factor, be as large as possible, i.e. the initially pressureless filling process requires a very high delivery rate compared to the low delivery rate during the pressure holding cycle at maximum pressure.

This is why two pumps are normally used for the filtration process. A larger single-stage pump fills the filter press until a medium pressure of 4 – 6 bar is achieved. A small 4-stage pump is used for the high-pressure process until dewatering has been completed and a sufficiently dry filter cake has formed. A further reason for using two pumps is the poor efficiency of conventional progressing cavity pumps at very low speeds. A strong backflow, which also decreases the lifetime of the equipment, occurs in conventional stators at low speeds and high pressures.   

KNOLL Maschinenbau requires only one progressing cavity pump for the entire filtration process. This pump operates both as a filling pump and as a high-pressure pump. The MX handles the process in a two-stage configuration and can cover the full control range with a high level of efficiency. Thanks to the stator with EvenWall® geometry, the MX pump has a very linear characteristic and reliably provides the required pressure at a very low frequency. The KNOLL technology saves the investment in a second pump and minimises the cost of process control. It also cuts energy costs by approx. 50 %.

The two-stage MX pump can deliver pressures of up to 24 bar and is ideally suited to this application as a filling and high-pressure pump.

Efficient antipasti production using KNOLL progressing cavity pumps

Progressing cavity pumps from KNOLL Maschinenbauare used world-wide in various sectors. In addition to being used for processing paints and lacquers, chemical or pharmaceutical products, they are the pumps of choice in the foodstuffs industry in particular. The versatile MX can be used in many processes, for example as a dosing pump or transfer pump or for the plastification of media. KNOLL has developed the MX plastifier version specially for plastifying highly viscous to compacted media – an application in which it offers a number of advantages.

A german manufacturer of antipasti products has greatly simplified its production process by using the MX P version. The filling of olives, peppers and chilies with fresh cheese was a very complex and time-consuming process before the introduction of the MX. Each individual husk had to be filled manually using a pressure system.
Used in combination with the dosing system from a south German plant manufacturer, the MX50P-80/10 allows olives, peppers and chilies to be filled fully automatically – all in a single operation. 100 fillings are possible per dosing cycle.

The hard fresh cheese, which is stored in 10 kg buckets and cooled to 6°C, is collected by the pump from the large top-mounted hopper and plasticized to a viscid product with the aid of the feed screw and a special hopper geometry. Stuffing of the fresh cheese products is achieved by co-ordinated operation of the feed screw and pump assembly. This allows air to escape upstream of the pump assembly, preventing air from being trapped in the fresh cheese.

This efficient system has been in operation for several years now and has simplified and improved the working process for the producer.