- Europe News
- Shaftless Spiral Conveyors
Shaftless spiral conveyors are designed for the transport of otherwise difficult to handle materials, such as municipal dewatered sludge, wastewater screenings, grit, industrial sludges or other sticky, viscous, stringy materials. Available in two designs, U-trough for horizontal or inclines up to 30 degrees and octagonal (OK-trough) for steeper inclines or vertical transport.
A shaftless screw conveyor can run up to 100% full, utilizing an almost full cross-section of a trough, no restrictions to impede material flow. If you are looking to transport up to 140m3/hr (5000 ft3/hr) shaftless spiral conveyors are the right choice for you.
When designing a shaftless screw conveyor system the following factors need to be considered:
1. Trough Size, length and design
2. Spiral diameter, pitch and model
3. Motor power and gearbox RPM
4. Conveyed material characteristics
5. Elevation angle of the conveyor
6. Feed method
Today we want to talk about different types of spirals that can be used to achieve the material handling results.
If you are looking to transport easy to transport material horizontal or at a slight incline, we recommend a single section spiral. This kind of spiral is the lightest spiral type and can be used in applications with short lengths and low torque. The addition of a welded insert increases strength and efficiency by reducing material "fallback". It is commonly used for horizontal conveying and for inclines up to 45 degrees. This spiral is suitable for most applications including inclined conveying to transport sludges, screenings and grit. Especially sticky material, for example, some lime amended sludges, where a buildup of product under the spiral is a risk, we would recommend spirals with inserts and a scraping edge.
The spiral types mentioned above are only the basic types of shaftless screw conveyors we offer. There is also a wide choice of element cross-sections and spiral pitches and diameters to optimally match the required torque and performance parameters to your application.
Selecting the right spiral type is crucial. Talk to us about which spiral type will be right for you.
Related news
- Asia Pacific News
- Europe News
- North America News
On behalf of the entire team at SPIRAC, we would like to extend our warmest wishes to you and your loved ones this holiday season. May your holidays be filled with joy, peace, and happiness, and may the coming year bring you success, good health, and new opportunities. Happy Holidays and a Wonderful New Year!
- Europe News
- North America News
We’re thrilled to announce the opening of our brand-new, state-of-the-art workshop in Sweden – SPIRAC MFG!
- Europe News
- Industrial Solutions
- Municipal Solutions
We are excited to announce that our new over 5,000 m² workshop in Nybro, Sweden, will be completed by the 5th of November, marking a significant project milestone.
- Exhibitions & Meetings
- Industrial Solutions
- Shaftless Spiral Conveyors
We’re excited to announce that SPIRAC will be exhibiting at the Solids exhibition in Dortmund! Visit us at Hall 5, Booth P29, to explore our latest innovations, we will showcase our innovative solutions for bulk solids handling.
- Exhibitions & Meetings
A huge thank you for joining us at IFAT 2024 in Munich! The SPIRAC stand was a hive of activity, buzzing with exciting conversations, crucial meetings, and unforgettable encounters. IFAT 2024 was truly a standout event!
- Exhibitions & Meetings
Join us at the Water Equipment Show on May 16, 2024, from 8:30 AM to 5:00 PM at the Telford International Centre (International Way, Telford TF3 4JH Telford) Booth G8.
Discover our SPIROGUARD Combined Sewage Overflow (CSO) demo unit showcased at our booth, or immerse yourself in our Virtual Inlet Works Plant. We are looking forward to seeing you.
- Exhibitions & Meetings
The IFAT trade show will be held in Munich from May 13th to 17th, 2024. You can find our booth in Hall A2, marked with booth number 335.
Die IFAT-Messe findet vom 13. bis 17. Mai 2024 in München statt. Unser Stand in diesem Jahr befindet sich in Halle A2 und unsere Standnummer lautet 335.
- Europe News
- Municipal Solutions
At a crucial stage of a £43M upgrade, with an additional 430 liters per second (l/s) coming in from a treatment plant in a neighboring town, the last thing a contractor would want is for not one, not two, but three back-to-back storm events. Yet for one leading solution provider to the water industry, it provided the ultimate test for new inlet screens.
- Europe News
- Exhibitions & Meetings
The Water Industry Operators Association (WIOA) Exhibition in Bendigo is an eagerly anticipated event for professionals in the wastewater sector in Victoria, Australia. Scheduled for the 28th to 29th of February, this year's exhibition promises a platform for knowledge exchange, networking, and showcasing cutting-edge solutions.
- Asia Pacific News
- Europe News
- Industrial Solutions
- North America News
- Shaftless Spiral Conveyors
Shaftless Spiral Conveyors showcase remarkable capabilities in efficiently managing extended runs with just a single gearbox. In this video presentation, witness a SPIROLINE® conveyor seamlessly transporting scum (light material that floats on top) across a 32m (100ft) distance, featuring our distinctive U-shaped trough and a FB-215/245 shaftless screw conveyor.
