Bakery Products

Sweet, but abrasive: special food pump even conveys difficult baking mix hygienically and reliably

 

Look behind the scenes

As popular as bakery products are, their production is often not without unforeseen difficulties, as for instance in a company making confectionery products in Southern Germany.    

 

Challenge accepted

The intention of the company is to convey a pastry mixture with a high proportion of egg white and sugar from the receiver tank and precisely dose it into moulds. However, the infeed of the mixes, whose specific weight is considerably below that of water, cannot be guaranteed. In addition, the medium has a somewhat abrasive effect due to the sugar crystals it contains and this puts additional stress on the conveying system – quite apart from the high demands in terms of hygiene and food safety.

 

Excellently solved

In order to cover this range of requirements, the company decided on a NEMO® hygienic pump. Thanks to progressing cavity technology, these pumps, depending on their size, are capable of dosing to an accuracy of between five and three percent, irrespective of the consistency of the medium, with smaller dispensers even achieving a volumetric accuracy of one percent. This is made possible by the geometrical rotor-stator pairing which produces conveying chambers keeping the same shape during rotation. The same quantity of medium is reproducibly transported in these chambers, which means the volume can be continuously adjusted via the speed. In this way the company can now precisely dose between 450 and 3,500 litres per hour of baking mix into the baking moulds at 1 bar.    

Due to the difficult medium, power transmission between drive and rotor in the hygienic pump is achieved via a flexible rod. Whereas open joints would be quickly worn by abrasion and closed joints filled with oil are not permitted with food safety in mind, the flexible rod is heat-shrunk with the connection points to form a hermetic seal at both ends and functions without moving parts, friction surfaces and lubrication. This means high operational reliability and a long service life are achieved with low maintenance costs.  

The fact that the pump does not need to be dismantled for cleaning also contributes to this. The streamlined geometry of the conveying area with no dead spaces allows direct cleaning in place. This involves the bakery company using hot water at 60°C to flush the pump for 20 minutes at 400 rpm. The special design and the materials used – above all stainless steel and highly robust elastomers – mean the lobe rotors do not get damaged in the process.

Dados Técnicos

Dados Técnicos

NETZSCH NEMO® hygienic pump

Medium: pastry mixture

Throughput volume: 450 and 3,500 litres per hour

Pressure: 1 bar

Products

Bomba Helicoidal NEMO® BH Higiênica

A Bomba NEMO® Higiênica BH é utilizada para aplicações de higiene e limpeza, especialmente na indústria alimentícia, farmacêutica, cosmética e química/bioquímica. É ideal para estas aplicações devido à sua capacidade de transporte contínuo, com pressão estável, suave e de baixa pulsação, além da sua capacidade de dosificação proporcional à velocidade.

Bomba NEMO® Higiênica BH Mini

A Bomba NEMO® Higiênica BH Mini é utilizada para aplicações de higiene e limpeza, especialmente na indústria alimentícia, farmacêutica, cosmética e química/bioquímica. É ideal para estas aplicações devido à sua capacidade de transporte contínuo, com pressão estável, suave e de baixa pulsação, além da sua capacidade de dosificação proporcional à velocidade.

Bomba Helicoidal Higiênica NEMO® SH

A Bomba Helicoidal Higiênica NEMO® SH é utilizada para aplicações higiênicas e de limpeza na indústria alimentícia, farmacêutica, cosmética e química/bioquímica, para o bombeio contínuo com pressão estável, suave, de baixa pulsação e dosificação proporcional a velocidade. A construção com caixa de rolamento e ponta de eixo livre permite o uso universal de todos os tipos de acionamento.

Bomba de Lóbulos Rotativos TORNADO® T2

A Bomba de Lóbulos Rotativos TORNADO® é uma bomba de deslocamento positivo. O fluxo de transporte é gerado por elementos de rotação em sentidos opostos um ao outro em uma câmara (o corpo de bomba). O líquido bombeado é movido dentro do corpo da bomba pelos elementos de bombeamento desde o lado de sucção para o lado da descarga.


Literature

Literature