Ive got a Nissan Navara.
I either build one as other recommend it or try to find someone who can build it.
I was reading this forum and I saw that others also ordered machinery from China. A screening machine can't be too complicated to build. I guess not many parts can be broken.
These folks "redstarscreening.com" offer custom made screening machines including a towable one.
I contacted them but they asked 5 other questions.

Thanks for the replies. Yes Ive seen these linear vibrating screens but as V8Druid mentioned the screening mesh sizing could be a problem. All used machines are purpose built and it is less likely that it suits our needs. I would prefer a towable screening machine as we currently dont have plant machinery to fit this onto.Ive got a Nissan Navara.I either build one as other recommend it or try to find someone who can build it.I was reading this forum and I saw that others also ordered machinery from China. A screening machine can't be too complicated to build. I guess not many parts can be broken.These folks "redstarscreening.com" offer custom made screening machines including a towable one.I contacted them but they asked 5 other questions.

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How to Select a Vibrating Screen for Your Industry-Specific Needs

How to Select a Vibrating Screen for Your Industry-Specific Needs

January 4,

Overview

• The article guides industries in making strategic choices that enhance efficiency and productivity.
• It elucidates the factors influencing selection, including particle size, capacity requirements, and material characteristics.
• It also explores the different types of vibrating screens, such as linear, circular, and elliptical, shedding light on their features and applications.

January 4,

Within the world of industrial screening equipment, a vibrating screen stands as a key player in solid waste management, construction, logistics, and more, providing unmatched benefits. This equipment segregates and categorizes various particles based on their sizes by transmitting vibrations to a screen. The finer particles pass through the openings in the screening surface, while the larger particles stay on the surface.

Multico, the leading distributor of vibrating screens in the Philippines, brings forth high-quality solutions catering to diverse industries in Manila, Cebu, and Davao. This article aims to guide you on how to select the perfect vibrating screen for your industry-specific needs.

Understanding Your Industry&#;s Requirements

Understanding the unique requirements of each industry is imperative when selecting a vibrating screen. The chemical, construction, and metallurgy enterprises with distinct processes and materials necessitate tailored solutions, as do other industries.

Construction Industry

The construction industry involves the creation, renovation, and maintenance of structures, infrastructure, and facilities. In construction, efficient material separation is critical. Vibrating screens play a vital part in sorting and classifying aggregates, ensuring the quality of construction materials.

Introducing the Rockster RTT Trommel Series, a top-notch solution to address crucial needs. This series is known for its outstanding efficiency and compact design, making it perfect for handling various materials like construction and demolition waste, quarry overburden, wood chips, and more.

Chemical Processing Industry

The chemical processing section involves the transformation of raw materials into valuable chemical products. It spans a spectrum from pharmaceuticals to specialty chemicals.

Without a vibrating screen, materials of varied sizes might cause bottlenecks, leading to inconsistencies in the chemical reactions. The equipment aids in accurate particle separation by size, preventing cross-contamination and facilitating a smooth flow of materials in processes like crystallization and filtration.

Metallurgy Industry

Metallurgy involves the extraction, refining, and processing of metals and alloys. In this, achieving precise particle sizes is crucial for subsequent processes. Vibrating screens contribute to the efficient classification of ores and metals, ensuring consistency in the final product.

For instance, a metallurgical plant where ores must be classified before further processing needs a vibrating screen to minimize the risk of irregularities in material size and compromised efficiency in subsequent processes.

Factors Influencing Vibrating Screen Selection

Selecting the suitable vibrating screen for your industry-specific needs demands a nuanced understanding of the factors that shape this decision, such as:

Particle Size and Distribution

Particle size and distribution refers to the range and variation of the size particles within the materials you&#;re aiming to process. Considering these factors allows you to choose a screen with the appropriate mesh size and design, ensuring optimal performance in sorting and classifying materials based on size.

Capacity Requirements

Capacity requirements pertain to the volume of materials your vibrating screen needs to handle within a specific timeframe. It directly impacts the efficiency of your industrial operations. You can select a vibrating screen with the appropriate screen length and design, preventing overloading and maximizing the throughput of materials.

Material Characteristics

Material characteristics contain the physical and chemical properties of the substances processed by the vibrating screen. This is crucial for selecting a vibrating screen that can handle the unique properties of your materials without compromising performance, allowing you to choose the right design and features to withstand the specific demands of your materials.

Types of Vibrating Screens

Vibrating screens are essential for project efficiency, offering features like high vibration intensity, large vibration amplitude, and low frequency. To guide you in choosing the right one for your project needs, we will dive into some of its common types:

Linear Vibrating Screen

The linear vibrating screen is commonly used in mining and aggregates because it harnesses the power of double vibrating motors rotating in opposite and synchronous directions. This imparts a horizontal force, causing the screen to move in a straight line. The opposing forces of the motors generate a perpendicular force that propels the screen&#;s motion.

Circular Vibrating Screen

The circular vibrating screen is a high-efficiency screen with multiple layers used in construction sectors. Its design incorporates screen materials, including a high, punched screen plate, and rubber screen plate. The seat-type structure allows easy adjustments to the screen surface angle by altering the position and height of the spring support.

Elliptical Vibrating Screen

The elliptical vibrating screen follows an elliptical motion track, making it ideal for screening operations in mines and quarries that involve stone and sand materials. Its larger capacity enables usage in more extensive operations, found in mines, quarries, mobiles, and other screening applications.

Key Takeaway

By unraveling the complexities of how to select the perfect vibrating screen by assessing different types and factors and understanding requirements, industries can optimize efficiency, reduce operational costs, and ensure seamless material separation.

Ready to upgrade your operations with the right vibrating screen? Multico, a leading distributor of high-quality vibrating screens in the Philippines, stands ready to cater to your unique needs. Contact us today and explore our diverse range of vibrating screens designed for efficiency and durability.

High-Quality Solutions

Vibrating screens are used for sorting as well as separating materials. Basically, a vibrating screen machine is used in mining and construction industry, but now it is used in different other industries as well. 

Whether you are going to choose a vibrating screen part or machine, you first need to get adequate information about the same. When you have information about it, you can make the best buying-decision. 

So, let&#;s keep exploring a comprehensive guide on vibrating screens for buyers.

Vibrating sieves machines : An Engineering Guide for powder and bulk solids

Round vibrating sieve are very widespread in process industries. They provide a compact solution for checking all types of bulk solids, from raw materials to finished product, regarding the presence of Foreign Bodies (contaminants).

If you are looking for more details, kindly visit Shitai.

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Vibrating screens allow to gently and easily remove foreign bodies from powders and granules by letting the good product flow through a wire mesh, vibrated to promote the flow of product, while contaminants (metal, wood...) are retained and then eliminated through the rejection.

Round sieves are generally made of the following parts :

• Cover, including inlet, inspection ports and rejection outlet
• Sieve deck, the part actually performing the sieving
• Cone / underpan, located right below the sieve and collecting the powder sieved to direct it to the next process step
• Frame and clamping system, allowing to keep firmly together the different components despite the vibration
• Unbalanced Motor (1 or 2), the driving force for the vibration
• Supporting and springs (sometimes rubber dampers) allowing to stabilize the sifter during the vibration

Figure 1 : Round vibratory sifter design

What is the working principle of a vibrating screen ?

Vibrating sifters are equipped with a sieving deck, made of a wire mesh or a perforated plate on which the bulk solids to check is loaded. An unbalanced motor (or 2 depending on the design), mounted on the chassis, is then transmitting a vibration to the sifting deck allowing the solids whose size is smaller than the mesh of the sieve to go through. This product is then channeled to the next unit operation. The parts which are larger than the sieve size don't go through and either stay on the sieve or are moved towards a rejection outlet thanks to the direction given to the vibration waves by the motor settings.

3. Sieve wire mesh designs

How are made wire mesh for vibrating sieves ?

The sieve is made in 2 parts for round vibrating sifters : a supporting ring and the actual sieve, which can take the form of a wire mesh or a perforated plate, welded or bonded on top of it.

Chosing the detail design of the sieve will depend on the application.

• For non hygienic applications (chemical...) : welding the wire mesh or perforated plate to the supporting ring is sufficient

• For hygienic applications (food, chemicals...) : a plastic bonding (epoxy most of the case) is generally more hygienic has it will avoid that material is trapped in between the sieve and the ring. However, the epoxy must be accepted by the local regulation (FDA approved...), should be durable and not be brittle.

Defining if a perforated plate or a wire mesh should be used will mainly be dependent on the throughput expected from the sieve. Indeed, perforated plates are much more durable and safer (less risk or breakage leading to a pollution of the product) but the reduced passing area vs a wire mesh means that at same throughput, the sieve has generally to be larger (costs, difficulties of implantation...). If wire mesh needs to be chosen, some mitigations to the risks of breakage can be done by choosing a durable material, magnetizable (Stainless Steel 430 or 318), so that it can be retrieved by a magnet positioned after the sieve in case of incident.

The sieve side is generally covered by a gasket which allowed to avoid that any foreign body bypass the sieve.

4. Vibratory sifter cover design

The cover of vibrating sifters play a bigger role than usually perceived. It ensures the dust tightness, but also helps to distribute the powder properly to the sieve decks. Inlet of product should not be close to the rejection, otherwise it will lead to the rejection of some acceptable material due to the fact that the actual sieving area will be reduced. Inlet should be positioned at the opposite of the rejection, or at the center of the sieve. If still not sufficient, it is possible to include a deflector welded to the cover that will direct the flux of material away from the rejection. The deflector can also have an effect to protect the sieve from the impact of the product and thus increase its life span.

Inspection ports should also be positioned on the cover. To have a good vision of the sieve from the inspection port, a minimum of 3 ports are necessary. They are closed by rubber pads when not in use.

The last fitting important on the cover is the rejection, which can be more or less obstructed by a wear plate. The wear plate leaves a little space only for foreign bodies to exit to the rejection. Wear plate are used mainly in case the sieve is not properly sized and product accumulates on the sieve desk. The wear plate then avoids to have too much rejection. But it can only be viewed as a mitigation measure and design should done considering enough sieving area to let all the product go through without flooding. The rejection should lead the overs to a tight container, a BFM connection is a good tool for this purpose.

The cover must be clamped strongly to the sifter in order to avoid any friction that could lead to heating, damage, or leakage of product. Different designs exist, depending on the application of the sifter : quick clamp can be used when cleaning requirement are high, otherwise, a simple ring clamp will be efficient.

5. Vibration

How the vibrating impacts the performance of a vibrating sifter ?

The vibration is performed by an unbalanced motor (sometimes 2). Changing the unbalance will have an effect on the amplitude and direction (when 2 motors) of the vibration. Unbalance should only be changed under the direction of the manufacturer to ensure that the sieving is optimized.

6. Supporting frame

Vibrating sieves' vibrations is strong, and amplitude is particularly important when the sifter stops (although some system now exist to reduce such vibrations). The support frame must be designed to handle such vibration and avoid to transmit it to the rest of the installation.

7. ATEX

Due to vibrations, static electricity can build up. As a consequence, the sieve must be well grounded (manufacturer provide grounding cables). Usually metallic clips are added on 3-4 points of the gasket wrapped around the sieve deck in order to ensure this electrical continuity. Having those clips in place is very important and operators must have a checklist to make sure they have been mounted.

8. Common problems with vibrating screens

How to solve sieving problems ?

Vibrating sieves are usually reliable equipment, however a certain number of issues may require some corrections :

Table 2 : common problems with vibrating sieves

Issue Root cause and action Too much vibration Check the setting of the unbalance motor
Make sure the supporting is correct
Check that flexible connections before and after are not too stiff Top cover is moving Check the strength applied by the clamps Wire mesh breakage Change regularly the sieve
Make sure that solids are gently poured to the sieve and do not impact it
Change material of sieve for longer lifespan Too much rejection Control the feed to the sifter, do not overfeed
Check the adequacy of opening size of mesh
Verify position of wear plate
Check vibration direction
Use a bigger diameter sieve Too low capacity Check vibration
Check the adequacy of opening size of mesh
Use a bigger diameter sieve

Issue Root cause and action Too much vibration Check the setting of the unbalance motorMake sure the supporting is correctCheck that flexible connections before and after are not too stiff Top cover is moving Check the strength applied by the clamps Wire mesh breakage Change regularly the sieveMake sure that solids are gently poured to the sieve and do not impact itChange material of sieve for longer lifespan Too much rejection Control the feed to the sifter, do not overfeedCheck the adequacy of opening size of meshVerify position of wear plateCheck vibration directionUse a bigger diameter sieve Too low capacity Check vibrationCheck the adequacy of opening size of meshUse a bigger diameter sieve

Vibrating screen buying guide - How to select a vibrating sieve

When sourcing a new vibrating sieve for your factory, the following questions need to be asked in order to buy the right specifications :

• What is the expected throughput the sieve ? What is the material particle size and product density to be sieved ? This will give the size of the vibrating sieve to buy.
  
• How fine should be the screening ? This will allow to determine the mesh size of the vibrating sieve machine. Depending on the finess, the supplier will be able to advise if some deblinding features (ultrasonic...) are required
  
• Does the manufacturer has good references for the application ? if not, maybe another supplier is more relevant or trials should be organized
  
• Can the supplier guarantee the throughput and a maximum rejection rate of good material ? (in case a rejection is installed)
• If the supplier able to offer a sieve that can be quickly opened to reduce potential downtime during cleaning and inspection ?
• What is the material of the wire mesh ? Can the supplier offer a resistant material with a long lifespan, is the material magnetisable ?
• Is it in ATEX area ? If yes, the vibrating screen must be certified and the supplier must be able provide those certifications
• Is it used in food / pharma application ? if yes, all materials must be certified for product contact and the supplier must be able to give every certificate.

Vibrating screens manufacturers

Note that PowderProcess.net has no commercial link with those companies.

Among the largest sifter manufacturers, an interested reader could contact :

• Russell Finex
• Sinex / Chauvin
• Vibra Schultheis
• Farley Greene
• Kason
• Sweco
• Virto / Cuccolini

Many other smaller vibrating sieve machine manufacturers are offering quality products and could be worth contacting, trade fairs such as Powtech are a good tool for Process Engineers wishing to check actual design of companies.

To know more about vibrating sieves

Vibrating sieves are a key components in a powder process to ensure reliability, safety of the installation and safety of the product.

Please follow the link to get access to vibrating sieves design details : All you need to know on industrial vibrating sieves for powder checking

Are you interested in learning more about Vibrating Screen Mesh Manufacturers? Contact us today to secure an expert consultation!