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A screw granular mixer is a widely used mixer in many industries. It could be designed and manufactured differently to suit specific applications. Here are some of the variations of the mixer.
Horizontal screw granular mixer
The horizontal screw mixer is most commonly found among all the granular mixers. It comes with a cylindrical mixing chamber that has one or more helical mixing screws. The screws move materials along the length of the chamber while simultaneously mixing and blending them. The movement generated by the screws creates a homogeneous mixture of the materials.
U-type screw granular mixer
The U-type screw mixer features a U-shaped horizontal tub with a central screw auger. The design of the U-shaped tub allows for the movement and mixing of materials in a circular motion. Using centrifugal force and friction, the screw moves the materials to the sides and back to the center. It is a common choice for some free-flowing powdered materials.
Cylindrical screw granular mixer
The mixer features cylindrical chambers that are divided by baffles or plates. The cylindrical beds create a vortices movement pattern in which materials move outward through the walls and descend inner vertically. It is suitable for powdery or granular materials.
Paddle-style screw granular mixer
The paddle-style granular mixer uses paddle-like blades to mix granular materials. The paddles move the materials radially and decently. The mixing operation could also be done along the length of the chamber. This type of mixer is often used for fragile and abrasive materials because it causes less shear and abrasive force.
Shaft-less screw granular mixer
The shaft-less screw mixer does not have a central shaft. Instead, it incorporates a screw with a load-bearing outside that performs mixing operations in a cylindrical chamber. The mixer suits materials that are sticky and likely to aggregate during the mixing process. It is also suitable for applications involving hazardous and toxic materials.
Mixing speed and power:
Usually, a screw mixer for powders has a power ranging from 4 kW to 15 kW. The mixing speed is frequently described in rotations per minute (RPM); the standard speed is 60 to 100 RPM.
Granule sizes:
Screw mixers can process many sizes and forms of granules. The typical granule dimension that industrial mixers can blend is 0.5 mm to 5 mm.
Mixing time:
The mixing time depends on the formula. It also relates to the power and speed of the mixer. Usually, the mixing time is 1 to 5 minutes for uniform mixing.
Mixer dimensions and weight:
A mixer usually has a length/width/height of around 2 m/1 m/1 m. Its weight is about 500 kg. Additionally, the mixers' dimensions and weights are often adjusted to the amount and particular requirements of the customers.
Production capacity:
The production capacity of screw mixers for granules is 300 to 500 kg per hour. It depends on the mixer size, motor power, and material density.
Applicable materials:
Screw mixers can blend granular materials in many industries. For example, fertilizers, food, chemicals, plastics, and pharmaceuticals related to granules.
Routine cleaning:
Users should thoroughly clean the mixer after each use to remove any residue or material left inside. Use water or cleaning solution to clean, and wipe the surfaces and corners of the mixer.
Lubrication system maintenance:
Regularly check the oil delivery system to ensure it works properly. Check the grease points and parts; add lubricating oil to reduce friction and avoid rapid wear of moving portions, such as bearings and chains.
Replace wearing parts:
Granule mixers are typically used for a long time and subject to constant abrasion. Users should periodically replace the mixer parts with those that are easily abraded, such as mixer blades and abrasion-resistant linings, to ensure evenness and stability of mixing results.
Electrical system inspection:
Check the electrical components, cables, and connections of the mixer to ensure the electrical system works properly. Fix loose connectors promptly. Ensure the cable protection is intact, and check if the circuit breaker and control panel are in good condition.
Periodic overall inspection:
Users need to inspect the overall machine periodically according to the usage condition. Check the fastening parts, hydraulic system, seal components, etc., to ensure mixer operation at its ideal state.
Screw mixers are commonly used in a variety of applications in different industries. They are primarily intended to mix solid and liquid ingredients. Therefore, they find use in the food processing, bakery, pet food, chemical, pharmaceutical, and fertilizer industries, among others.
In the food processing industry, granular mixing screws combine solid and liquid foodstuffs to produce dough, sauces, batter, and other semi-viscous products. By uniformly integrating various particle sizes and moisture contents, screws mixers ensure the quality and consistency of final food products. Likewise, in the bakery industry, they are used to combine flour with other ingredients, including sugar, milk, oil, and yeast, for dough preparation, which is a granular blending process. The mixing of these bakery products results in uniform dough with desired fermentation and baking properties. Also, the screws blenders are essential in the production of pet food, which consists of various grains, meats, vitamins, and minerals. They ensure consistent mixing of the ingredients prior to pelleting or extrusion.
Granular screw mixers are also widely used in the chemical industry to combine chemicals with different granular properties, such as detergents, fertilizers, and additives. They ensure uniform distribution and integration of raw materials, which improves the quality and performance of chemical products. Additionally, in the pharmaceutical industry, screw mixers are used to combine active ingredients, excipients, and additives in the production of tablets, powders, and granulates. They provide uniform mixing of ingredients, ensuring the precise dosage and efficacy of pharmaceutical products.
Moreover, screw mixers are used in the construction industry to mix additives, fillers, and other compounds that are granules to produce construction materials, such as asphalt and mortar. In the cosmetic industry, they are used to mix granular raw materials, such as pigments, powders, and oils, to manufacture cosmetic products, such as creams, lotions, and make-up.
Overall, screw mixers are versatile mixing machines when combining solid and liquid materials is required in the production of different products in various industries.
Consider the following factors when selecting a screw mixer granule for an industrial application.
Production Requirements
The primary use of the mixer will influence the type of granule mixer selected. The quantity of mixtures required on a daily/weekly basis is essential to consider. For example, if a high volume of mixtures needing mixing is required within a short time span, then a high-capacity industrial mixer with a large mixing volume should be chosen.
Feed Types and Mixture Specifications
Screw mixers can mix granular and liquid materials. However, the type of feed running through the machine should be compatible with the mixer. For example, screw mixers are not suitable for highly corrosive granules, chemicals, or liquid mixtures. Granules and liquids having high viscosity levels can also be unsuitable for a granule mixing machine, which may require a different type of mixing machine, such as an emulsifier or homogenizer.
Machine Features
Advanced mixing machines, such as those on Cooig.com, will have extra features, including temperature control and moisture control. Other facilities include an automated feeding system and the machine's energy-efficient capabilities. Safety features, such as detecting any leaks in the pipeline, should also be considered.
Budget Constraints
The type, model, and manufacturer will determine the price of the granular mixer. Granular mixing machines with additional features will be more expensive. It is essential to set a budget when researching which type of mixer machine to purchase.
Maintenance and Support
A screw mixer machine that is easy to clean and maintain should be chosen. It should also have any support needed readily available, including spare parts and technical assistance.
User Reviews and Recommendations
Before purchasing or renting out a screw mixer machine, it is essential to carry out detailed research on suppliers. Check customer reviews and supplier credibility. Find out about product warranties and what is covered by the warranty when mixing machine parts need to be replaced.
Q: What are the trends in the screw mixer market?
A: The global industrial mixer market is expected to grow from $4.69 billion in 2022 to $4.73 billion in 2023. It is expected to reach around $5.87 billion by 2026, growing at a CAGR of 5.0%.
Q: Are screw mixers environmentally friendly?
A: The granule screw mixer is an environmentally friendly machine because it reduces waste by recycling material that would otherwise be discarded.
Q: What is the relationship between screw mixers and concrete?
A: The screw mixer plays a pivotal role in the production of concrete; hence, it remains a crucial component in concrete manufacturing facilities. The demand for concrete mixers is continuously on the rise owing to urbanization and infrastructural development. In turn, this drives the need for efficient concrete mixers such as continuos mixers which are able to handle large volumes of concrete production.
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