Conical Screw Mixer

Conical Screw Mixer
Conical Screw Mixer
Conical Screw Mixer
Conical Screw Mixer
Conical Screw Mixer
Conical Screw Mixer
Conical Screw Mixer
Conical Screw Mixer
Conical Screw Mixer
Conical Screw Mixer
Conical Screw Mixer
Conical Screw Mixer
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Vertical cone screw blender for batch processing powders, pastes and liquids

Conical screw mixer, also known as Nauta Mixer, cone screw mixer, vertical screw mixer, consists of one or two asymmetric screws. The vertical cone screw blender is a batch mixer, specially designed for batch processing of powders, pastes and liquids. The screws rotate around their own axis (rotation) while, with the help of the rotation of the cantilever, they revolve around the central axis of the cone vessel along the inner wall of the vessel (revolution).

The equipment repeatedly lifts the material through the rotation and revolution of the screw, producing complex movements such as shearing, convection, and diffusion in the vessel, thereby achieving uniform mixing. This cone screw mixer is featured by wide applicability, large capacity, residue-free discharge, and energy saving.

Applications

S&L conical screw mixer is ideal for batch mixing and blending of powders, pastes and liquids of the food, pharmaceutical, chemical and feed industries.

Applicable Materials

S&L conical screw mixer is suitable for mixing and blending powders and powders, particles and powders, as well as powders and small amounts of liquid additives. The mixing machine has a wide adaptability for mixing coarse powders, fine powders, fibrous or flakey materials., and will not cause overheating of heat-sensitive materials, and can keep particles as intact as possible.

Additional Functions

Pressure/vacuum inside mixer, Jacket for cooling or heating

Specifications
Gross Volume (L) Effective Volume (L) Overall Dimensions (mm) Shaft Speed (rpm) Approx. Weight (kg)
A (length) B (width) C (height)
100 40-60 670 670 1300 118 250
300 120-180 934 934 1900 119 450
500 200-300 1106 1106 2200 119 550
1000 400-600 1509 1509 2800 97 1100
1500 600-900 1662 1662 3000 97 1300
2000 800-1200 1844 1844 3300 97 1450
3000 1200-1800 2071 2071 3500 97 1600
4000 1600-2400 2314 2314 4000 74 2550
5000 2000-3000 2457 2457 4150 74 2800
6000 2400-3600 2603 2603 4400 74 2900
8000 3200-4800 2850 2850 5000 74 4350
10000 4000-6000 3088 3088 5300 72 5600
12000 4800-7200 3267 3267 5600 72 6150
15000 6000-9000 3505 3505 5950 72 6600
20000 8000-12000 3833 3833 6500 56 10150
25000 10000-15000 4115 4115 7000 56 11000
30000 12000-18000 4359 4359 7400 56 12000
Details
    1. Mixing system
      Standard conical screw mixer consists of two screws, one long and one short. In practical applications, depending on the equipment specifications, it can also be equipped with a single screw (one long screw) or three screws (two short and one long, symmetrically arranged).
    1. Heating/cooling jacket
      Various types of jackets can be added to the outer body of the mixer, allowing for the cooling or heating of the material by injecting cold or hot media into the jackets. Cooling is typically achieved by pumping industrial water into the jackets, while heating can be achieved by introducing steam or thermal oil.
    1. Liquid injection
      Above the choppers, atomizing nozzles can be added to achieve liquid addition mixing. Due to the lower density of the material under the shear of the choppers at this position, the atomized liquid is more easily able to penetrate and mix with the powder material.
    1. Lip
      The vessel lip can be made into a head-type, and the vessel body can be thickened to withstand positive or negative pressure. This design can reduce residue and facilitate cleaning, making it a common setting for vessel bodies that require pressure resistance.
    1. Feeding method
      Manual feeding, vacuum feeder, and conveyor feeding are available. In specific processes, the vessel can be designed as a negative pressure chamber. Using a hose, free-flowing dry materials can be sucked into the vessel for blending. This setup can help avoid residue and contamination during the feeding process.
    1. Discharge valve
      The standard discharging uses a "lobe valve" that is closely fitted to the bottom of the long screw, effectively reducing dead corners in the mixing process. The valve can be manually or pneumatically operated. Depending on customers’ requirements, S&L offers various outlet valves to choose from, such as butterfly valves, ball valves, star-shaped discharge, and side outlet can be installed.
Options

Conical Mixer with CIP

S&L conical screw mixer is equipped with a Clean-in-Place (CIP) system to enhance its performance for hygienic production. This system allows for thorough cleaning of the mixer without disassembly. It involves installing washing devices and performing manual preparatory steps to initiate the cleaning process. The CIP system operates in a fully automated mode through programmable logic control (PLC), ensuring complete cleaning. After wet cleaning, it is essential to dry the mixer using air. By utilizing the CIP system, cross-contamination between batches can be prevented, thus ensuring the quality of the finished products.

Conical Mixer with Jacket

The dimple jacket is a commonly used type of jacket for dryer mixers. It consists of a thin external shell attached to the vessel shell using spot welds. The cooling or heating medium flows through the jacket, allowing for temperature control of the mixer. With advancements in material processing, mixers are increasingly being used for multi-functional mixing purposes. A dryer mixer can be utilized for mixing materials with a maximum water content of 70%, which can then be dried through the heating jacket combined with vacuum technology. In some cases, the drying effect can reduce the water content to as low as 0.05%. The basic design of a dryer mixer involves a stationary horizontal cylinder that is loaded from the top and discharged from the bottom. The standard mixing tools are plow-shaped and radiate from a horizontal shaft supported by outboard bearings. Other mixing tool designs are also available to suit specific requirements.

Operating based on the proven "fluidized bed" mixing principle, this dryer maintains the materials in a mechanically fluidized suspended state. This allows for intimate contact between reacting mediums, such as gas-solid or liquid-solid, and facilitates efficient heat transfer between them and the heat transfer surfaces of the mixer.

Cooling or heating: Various types of jackets can be added to the outside of the mixer cylinder to achieve cooling or heating of the materials by injecting cold or hot media into the jackets. Cooling is typically achieved by pumping industrial water, while heating can be achieved by introducing steam or thermal oil.

Conical Mixer with Retractable Rotor

In a hygienic mixing environment, the screw agitator pull-out design is an ideal choice. This design allows for easy access to the mixing chamber, reduces downtime for cleaning, and prevents cross-contamination between batches. The driven system ensures that the top cover and vessel can be easily separated, facilitating efficient cleaning of the mixer. The screw agitator pull-out design is particularly useful for dealing with sticky materials that may adhere to the vessel or agitator. This design provides a good way to ensure complete cleaning, thereby avoiding any potential pollution or cross-contamination issues. Additionally, this design allows for quick and easy receipt changing, enabling users to increase the efficiency of their mixing processes.

S&L conical screw mixer is a batch blender, allowing for batch mixing and processing with traceability. It incorporates special mixing components that ensure high mixing quality and accuracy. Due to its conical shape, this mixing equipment requires a relatively small footprint. Its unique structural design enables easy discharge of powders or granules, with no residual.

S&L conical screw mixer are optional in manual feeding, vacuum feeder or conveyor feeder.

S&L conical screw mixer is suitable for mixing and blending of battery materials, detergent powders, infant formula, cocoa powder, press metal powders, inorganic pigments, etc.

  • Continuous blending or batch blending method: Batch processing allows for traceability.
  • Batch size: It is important to find the right balance, as an excessively large batch may result in uneven mixing.
  • Mixing time: Shorter mixing times lead to lower processing costs and reduced degradation of sensitive materials. However, a balance must be struck between mixing uniformity and cycle time.
  • Power consumption: Energy efficiency is crucial. S&L has extensive experience in designing energy-efficient mixing and blending systems.
  • Easy discharge: Discharge capability is one of the key functionalities of batch mixers. It is essential to ensure complete discharge of the blended material without any residual.
  • Easy cleaning: Proper cleaning is vital to an equipment for mixing and blending different materials. S&L industrial mixers & blenders are integrated with CIP (Clean-in-Place) systems for easy cleaning. When selecting a mixing & blending system, please inform our technical experts about your requirements. They will provide suitable recommendations to minimize your procurement costs and maximize the equipment efficiency.

Usually 45 to 90 days following the confirmation of the design drawings.

We can conduct paid tests for the finished equipment. We invite you to prepare the materials used for equipment test, and we are confident that the mixing result will meet your needs.
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