Polyurethane screens have been widely used in the field of industrial screening due to their excellent properties such as wear resistance, corrosion resistance, and high strength.

Polyurethane screens have been widely used in the field of industrial screening due to their excellent properties such as wear resistance, corrosion resistance, and high strength. However, correct installation methods and precautions are essential to ensure efficient operation and extend the service life of the screen. This article will introduce in detail the key points to pay attention to when installing polyurethane screens to help you avoid common mistakes and ensure the stable operation of the equipment.

1. Choose the right screen material and specifications

Before installing the polyurethane screen, you must first choose the right screen material and specifications according to the characteristics of the material and working conditions. For example, polyurethane screens are wear-resistant but afraid of water, rubber screens combine wear resistance and water resistance, and wire woven screens are wear-resistant but have a short service life. Make sure that the size of the screen completely covers the screening area and meets the installation requirements of the equipment.

2. Check the integrity and quality of the screen

Before installation, carefully check whether the screen is intact, including the mesh, frame, pressure strips, etc. If damaged, replace it in time. The screen should be free of defects such as breakage, bubbles, oil stains, and fuzzing. The surface should be smooth and flat, and the screen holes should have a certain taper to prevent blockage.

3. Use the correct installation method

There are many installation methods for polyurethane screens, the most common of which are bolt-matching, tensioning, rail seat buckle and pressure strip. Choose the appropriate installation method and install it strictly according to the operating steps:

- Bolt-matching: reserve bolt holes according to the parameters of the screen frame, pass the bolts through the screen holes and fix them with nuts.

- Tensioning: The screen needs to be folded and hooked, and carriage bolts and screen surface fixing bolts are used to tighten the screen by tightening the nuts.

- Rail seat buckle: snap the screen plate and the rail seat buckle in, without or with less bolts.

- Pressure strip: press the pressure strip on the screen surface, and fix the pressure strip to the screen frame with bolts.

4. Ensure the flatness and tension of the screen

During installation, ensure that the screen is flat and tensioned to avoid vibration during operation, which may cause the edge strip to break. Check the tension of the screen to avoid too loose or too large tension. Too loose screen will cause the screen to hit the surface of the screen "secondary forced hit", seriously affecting the efficiency and service life of the screen; too large tension will directly damage the screen.

5. Avoid installation errors

- It is strictly forbidden to tighten on the non-positioning block side first to avoid installation deviation.

- The upper edge of the polyurethane screen is strictly prohibited to be installed at the bottom of the upper end surface to avoid leakage of the upper edge.

- It is strictly forbidden to hook the screen plate into the edge groove of the screen to avoid leakage and damage to the screen surface.

- It is strictly forbidden to misalign the screen rod with the polyurethane screen rod to avoid misalignment and wear.

6. Inspection and adjustment after installation

After installation, carefully check the installation of the screen to ensure that there is no looseness or deformation. Before starting the equipment, check whether the screen is damaged and whether each set of rings is locked; when starting, pay attention to whether there is any abnormal noise, whether the current is stable, and whether the vibration is abnormal.

7. Regular maintenance and cleaning

Regularly clean the blockage on the surface of the screen to prevent material adhesion and accumulation, which will affect the screening effect. Use a soft brush or air gun to physically remove dust, impurities, etc. on the surface of the screen, and rinse with clean water regularly to remove stains on the screen. For stubborn dirt that is difficult to clean, appropriate cleaning agents can be used for treatment. Pay attention to the use of non-corrosive cleaning agents and clean according to the prescribed concentration and time.

8. Avoid high temperature and mechanical damage

Polyurethane materials are not resistant to high temperatures. Avoid contact with high-temperature substances during use to avoid deformation or burning. Avoid collision or scratching of the screen by sharp objects to avoid damaging the screen structure.

9. Control the feed amount and feed evenly

Control the material feed amount to avoid overload operation, which affects the screening effect and screen life. Try to feed evenly and continuously or add a feed buffer device to reduce the impact of the screen and extend the life of the machine.

10. Regular inspection and timely replacement

Regularly check the wear of the screen, replace the damaged screen in time, keep the equipment clean, and reduce the impact and wear of the material on the screen.

Through the above precautions, the installation quality and service life of the polyurethane screen can be effectively improved to ensure the efficient operation of the equipment. I hope this information is helpful to you. If you have any questions or need further guidance, please feel free to contact us.