Ⅰ. How to identify the quality of urethane screen?

Good quality urethane screens must be different from ordinary urethane screens in use, as we all know. Therefore, it is necessary to screen the product quality, choose a good quality product, and better play its role in use.

Check now

If you choose general products or products with poor quality, it will directly affect your screening efficiency and cause mistakes in your work.

1. When choosing a urethane screen, check whether the screen holes are even. After all, the sieve openings of good-quality urethane screens are uniform, standard-compliant, and have a small tolerance range.

2. The opening ratio is a direct factor affecting the screening efficiency. The more openings of the urethane screen, the higher the opening rate, the higher the screening efficiency and output.

3. The connection method of the urethane screen is also a factor that directly affects the screening efficiency. If the newly developed urethane screen has a screen with an automatic connection device, the connection is simple and time-saving, and the disassembly and assembly are more convenient.

It is convenient to shorten the initial installation man-hour and the partial screen replacement time in use, thereby improving production efficiency. Polyurethane screen requires tight connection without leakage.

4. In actual production, the PU screen should have strong elasticity to ensure that the waist does not collapse during production; the urethane screen should have a certain toughness to ensure that the screen is not brittle.

5. Check whether there are burrs on the surface of the urethane screen, whether the screen is intact, and whether there are cracks on the surface of the urethane screen. Check whether the surface of the polyurethane filter is defective and whether the polyurethane filter is intact.

Ⅱ. What causes the urethane screen to be damaged during use?

1. The quality problem of urethane screen is an important factor to accelerate the rupture and damage of urethane screen.

If the quality of the pu screen mesh does not meet the screening requirements of the material, the pu screen will be damaged soon, so when you choose the urethane screen, you must choose a professional manufacturer with guaranteed quality.

2. Polyurethane mesh is not tight enough

The polyurethane mesh is usually damaged and broken along the edge of the urethane screen or at the edge of the edge. The majority of users of the urethane screen check the tension of the urethane screen to ensure that the connection is firm.

3. Material supply problem

The vibrating screen is constantly feeding, so too much feeding will interfere with the normal movement of materials on the screen surface, which will not only make the urethane screen wear and loose, but also reduce the ability to process materials.

If there is a lot of feeding at one time, the load on the motor will increase rapidly during unbalanced operation. Not only the urethane screen is easily damaged, but also the vibration motor is easily damaged.

Therefore, when the machine is running and feeding materials, the feeding materials must be evenly distributed. For high-impact feeding systems, the urethane screen of the vibrating screen must be equipped with a buffer hopper.

You will get efficient and thoughtful service from Zhaoyue.

The direct impact of the material on the urethane screen consumes the exciting force generated by the vibration source, which is more likely to damage the urethane screen and easily cause the pu screen to be fatigued in a large number of screening materials, which will damage the life of the urethane screen.

What is screening media?

When choosing your screening media, there are many things to consider. From the mechanics behind the machines used in screening, to the make-up of the screen media themselves. It is also really important to think about what is being screened, and how fine you want your output. We’re here to help you learn what screening media you need for your screening operations!

In this blog, we unpack screening media, exploring the types of media, processes, and things that affect your screening needs. We’ll also look at selecting the right screening media where you can get it.

What is screening media?

Screening involves using mesh (the screening media) to separate materials based on their size by passing them through a screening machine such as a trommel or scalping screen. Passing materials like soil or rocks over mesh screens helps separate them by only allowing material that can fit through the holes in the mesh to fall into a bed below. This screened output can then be colleced by a conveyor and stockpiled. The larger pieces cannot pass though the media as they are too big, and will end up in an ‘oversize’ pile.

Simple right? Well, there’s a little more to it than that.

When we talk about screening media, we mean the mesh attached to the screeners themselves. The screens are really important to the process and control how well the machine will separate your material.

Find trommel screeners for sale.

How does screening media work?

Screening works by adding motion to a mesh media. In a trommel, this is circular motion as the drum spins around. On a deck screener, the motion is caused by vibrating the screen. When motion is added to the surface (or screen) the material is moved about causing it to break up and fall through the mesh in a sieve like action.

Screening systems

Screening media can be added and swapped out on most screening machines, whether they are stationary or mobile. Here are two of the most common screening systems used today:

• Self-supporting systems - These screening systems deal with larger course materials like rocks. They must be strong enough to cope with the heavier pieces moving over the screening media. These are mostly deck screens like the one below.

• Modular systems - Modular screening systems are popular due to their versatility and lower costs. These systems are made up of smaller panels that can be changed out independently depending on your screening needs, or once they start to wear down. Modular systems also allow you to place panels with different screening sizes at various points on the machine, separating more than two material sizes at once! This is a really popular system as mesh in screeners is easily damaged but having the option to replace one panel at a time is a huge advantage. They are commonly used in trommel screens.

Things that affect your screening

Apart from your screening systems, you’ll need to consider a number of things before you begin to decide what screening media is best for your use case. These include the material you want to screen, and what you hope the end result will look like.

• Screening material - First you’ll need to get a good idea about the size and shape of the input you’ll be feeding into the screener. This will help you to understand the speed at which the material will move over the screen. The quicker you screen, the faster you can make your separated outputs. But be careful, fast screening doesn't always lead to a well-separated output. To find out why check out our trommel blog here.
• Wet or dry? - Next, you’ll need to know if the material to be screened is wet, dry, or sticky. While most screening media can handle dry feeds, some media may struggle with wet, muddy or damp inputs like compost and soil. Dry products such as concrete and rock are screened best with scalping screeners whilst trommels are great for compost.
• The product - Finally, think about the type of end product you need. What final size or grade are you looking for? Will you pass the material over the screen again after crushing it? How many tons per hour will you been screening?

How to choose the right screening media for you

Now that you have a good idea about all the different types of screeners, it’s time to look at the screening media itself. Depending on if your material is wet or dry, if you’re screening soft, hard, or sandy rock, and the output size you want - you’ll need to think about the type of mesh or media that best suits your business. Below we will discover how mesh size, the material it’s made from and the kind of holes it has can all be tailored for individual applications so that you can get the most out of your screener.

Mesh sizes, patterns, and hole size

Once you’ve picked your materials, you can move on to the make up of the mesh screen itself. This is where you’ll need to pay careful attention to your screening media goals. The arrangements used for the patterns and holes that make up your screen not only determine the size of the material that will be able to pass through but also its shape.

• Size of screen holes – also known as the ‘aperture size’. The mesh hole size controls the size of the material that can pass through.
• Shape – including squares, circles, or slits. The shape of the holes in the screen can be changed to handle round, irregular, or flaky materials.
• Pattern – affects how these openings are laid out on the screen. The patterns can run in the same direction as the flow of screening input allowing more to fall through the screen. The pattern can also run against the flow, improving accuracy by slowing down the speed at which the material runs through the screen.

Mesh Materials

Next, you’ll need to pick a mesh material to use. There are three primary options for you to choose from.

• Steel – is the most commonly used material for screens. Most mesh screens use steel due to its ability to be made into any thickness & shape. Steel is also very robust and can last for a long time without needing to be replaced.

• Polyurethane – is a very tough plastic that can be molded according to your needs. It is often the best option for wet screening & it can be easily replaced without the chance of it rusting. Polyurethane is great for modular screening systems as they make great panels.

• Rubber – is best for screens that are likely to experience impacts and strikes from coarse or larger inputs like hard rocks. Rubber hardness is an important element, with harder rubbers being stiffer but lasting longer, and softer rubbers allowing for better flexibility but don't last as long.

Where to buy your screening media

At Machinery Partner, we collaborate only with vetted and approved suppliers, sourcing our products directly from them based on your unique business needs. We only work with high-quality, reliable materials and equipment.

Feel free to give us a call or reach out to learn more about our screening media products, materials, and options.

‍