Decantador centrífugo TWINCONE
Decantador centrífugo TWINCONE
Lavado óptimo en el decantador.
La centrífuga decantadora SIEBTECHNIK TWINCONE es una centrífuga decantadora con un segundo tambor cónico colocado corriente abajo.
La materia sólida se separa y se concentra por sedimentación en el primer cono del tambor. El segundo tambor cónico tiene un diámetro mayor, por lo que se forma una capa de menor espesor de materia sólida delante del husillo sinfín. En este segundo tambor cónico, el producto se puede lavar y el líquido de lavado se puede drenar por separado de las aguas madres.
Debido al diámetro más grande, se ejercen grandes fuerzas centrífugas en el segundo tambor cónico, y estas ayudan a un mejor desagüe.
Todos los decantadores SIEBTECHNIK TWINCONE están adaptados individualmente a las condiciones del producto y los requerimientos particulares.
Comportamiento operacional y características mecánicas.
La suspensión que se alimenta a través del tubo de entrada se acelera en un tambor de diámetro relativamente pequeño diseñado para satisfacer los requisitos de clarificación.
La materia sólida que se ha depositado en el tambor de clarificación se espesa previamente mediante un cono corto. Aquí, el volumen de llenado del recipiente y, por lo tanto, la longitud de la sección de desaguado se puede ajustar de forma continua mediante una placa de contención regulables.
La materia sólida previamente espesada se descarga sobre el borde de descarga al final del tambor de clarificación en un cono de secado considerablemente más grande aguas abajo.
Aquí, la torta de sólidos se rompe y se redistribuye con un espesor de material más bajo en los álabes de un husillo sin fin ajustado al tambor cónico mayor, con volúmenes de llenado más pequeños entre los álabes.
Al mismo tiempo, el mayor diámetro del cono de secado garantiza altas fuerzas g a velocidades relativamente bajas del rotor. El líquido residual se drena a través de una salida de líquido separada en la carcasa de la centrífuga.
La cantidad de materia sólida en el filtrado es pequeña y, debido a la recirculación en la centrífuga, no deben clasificarse como una pérdida.
El lavado del producto también es posible en el cono de secado corriente abajo. El líquido de lavado se drena por separado de las aguas madres.
Drives for centrifuges
The solution to a separation task depends very decisively on the centrifuge drive. The centrifugal force required for solid-liquid separation is determined by the bowl or screen speed. To achieve the right speed for optimum separating results, it is frequently necessary to keep the speeds variable. The drive control needed for this is designed by our specialists specifically to fit your application.
Furthermore, on screen worm centrifuges and in decanters the speed differential between the solid-conveying worm and the bowl is decisive. It determines the time which the solid spends in the centrifuge and so the quality of the drying. The correct speed differential for your separation task is determined by the correct choice of gear unit. The speed differential here may be constant, but may also be variable. In the latter case the back-drive, where the otherwise fixed gear input shaft is also driven, is used. If the worm speed is required to be kept completely independent of the drum speed, hydraulic drives (viscotherms) or two-stage gear units with an upstream differential planetary stage are used.
To guarantee the operational reliability of your centrifuge, the drive system is continuously monitored. Excessive speeds, overcurrent and slip are identified and reported to the machine control system and there processed.
Only a drive system specially designed for your separating task will give optimum separating results.
Explosion protection / inertising
Explosion protection/inertising
Inertisation of our machines and systems may be necessary for various reasons. In many industrial processes it is necessary for safety reasons to reliably prevent the build-up of an explosive atmosphere through dust or gases (ATEX).
It may also be necessary to seal and overlay the product spaces with inert gas, e.g. nitrogen (N2) or carbon dioxide (CO2), to prevent oxidation and maintain product quality.
Use SIEBTECHNIK specialialists’ many decades of experience in all areas of industry to help seal and inertise the process spaces in your centrifuges.
We will be pleased to work with our customers to draw up an inertising concept for the integration of our machines into existing or scheduled plant systems.
Hygienic Design / CIP
The name SIEBTECHNIK is inseparably associated with dewatering tasks to meet the most stringent hygiene requirements. The separation of batter from frying oil at temperatures of approx. 200°C with the SHORTBOWL decanter centrifuge, the centrifuging of lactose crystals with the SHORTBOWL decanter centrifuge and the CONTURBEX screen worm centrifuge for the manufacture of baby food or the manufacture of extremely pure inorganic salts with our CONTURBEX and pusher centrifuges are some examples. Design features for this are the technical separation of the drive and processing sections of the centrifuge and highly developed sealing systems that are easy to clean by CIP.
For the optimisation of centrifuges in the hygiene sector and/or in areas where e.g. cross-contamination has to be prevented by CIP we use riboflavin tests to examine and optimise cleaning results.
Our self-developed and USDA-certified CIP nozzles, self-developed hygienic screw connections, special hygiene surfaces or our highly developed USDA-conformant sealing technology make many dewatering tasks possible only with our centriguges.
Service
Our reliable service enables optimum operation of your machines and systems. We offer energy optimisation, machine monitoring, an on-site maintenance and & repair service, OEM spare parts, damage cause analysis, maintenance & repair kits, stock inventory analysis, machine history management, personal technical consultation, training & workshops, 24 hr service, retrofitting & upgrades and used & loan machines.
Ask us, we’re there for you.
System solutions
SIEBTECHNIK TEMA has consistently developed itself into one of the world’s most innovative manufacturer of continuous centrifuges and suppliers of system solutions in the field of mechanical and thermal solid-liquid separation since the early 1940s. SIEBTECHNIK/TEMA is your reliable partner for customer-focused, custom-built machines and system solutions.
SIEBTECHNIK TEMA centrifuge and drier systems offer you the latest technology, customer- and product-specific special fittings and individual consultation at the pre-sales stage and reliable support in the after-sales process. For mechanical liquid separation continuously operating centrifuges are often the technically and economically best solution. They separate large volumes in closed housings with little space requirement and low energy and time costs. Also drying on the fluidised bed with fluidised bed driers and coolers has established itself in numerous branches of industry and applications.
Solicitud
- Operación continua
- Lavado con separación separada de agua madre y líquido de lavado
- Amplia gama de aplicaciones en todas las áreas de la industria
- Concepto de accionamiento flexible
- Alta disponibilidad de la máquina
- Mantenimiento mínimo
- Larga vida útil
- Ajuste óptimo de clarificación y desaguado
