Vibrating screen is an efficient solid material screening equipment, commonly used in mining, metallurgy, building materials, chemical industry, light industry, medicine and other industries to screen and classify materials of different particle shapes and particle sizes.During the operation of the vibrating screen, it is very common for the material to be out of material, out of material, and biased. The following are a few reasons and solutions for this situation.

The reasons and solutions for the non-feeding or non-feeding or deviation of the material

1. Improper amplitude setting

If the amplitude is too large or too small, it will affect the flow of the material and the screening effect. If the amplitude is too large, the thickness of the material layer will increase, which is not conducive to the material passing through the screen; if the amplitude is too small, the fine particles cannot pass through the screen, which affects the screening effect. In practical applications, the reasonable range of amplitude is generally 1-5mm.

Solution: Combining material characteristics and screening requirements, but also taking into account the speed and motor power of the vibrating motor, as well as the design structure and size of the vibrating screen and other factors, set the amplitude reasonably, adjust the amplitude of the vibrating screen to a reasonable range, and continuously adjust and optimize during actual use.This can improve the working efficiency and screening accuracy of the vibrating screen, and at the same time, it can extend the service life of the equipment.

2. Improper installation of vibration motor

Improper installation of the vibrating motor may cause problems such as unstable work and uneven vibration of the vibrating screen. Timely inspection and adjustment are required, which can improve the operating stability and work efficiency of the equipment during the operation of the equipment, and reduce the impact of equipment problems.

Solution: Check whether the vibration motor bracket is fastened, and if it is loose, it needs to be adjusted.When installing a vibrating motor, it is necessary to ensure that the installation position is accurate and the cooperation between the bracket and the vibrating motor is close to avoid imbalance or misalignment. At the same time, use high-quality vibrating motor brackets and bolts and other accessories to avoid the use of low-quality accessories that cause the bracket to loose easily.For the vibration motor bracket that has become loose, it is necessary to stop in time for maintenance, re-tighten the bracket bolts, and do a good job of anti-loosening treatment.

3. The screen is clogged or worn out

Screen clogging or wear is also a common problem of material not being fed or not being fed. Clogging can lead to problems such as reduced screening accuracy and poor material fluidity, while wear may cause the screening hole to become larger or deformed, which in turn affects the screening effect.

Solution: Regularly clean up the materials on the screen to avoid clogging of the screen.Under normal circumstances, it is recommended to clean the screen at least once a day, especially for materials that are easy to clog, it should be cleaned more frequently.Choose suitable screen materials to avoid excessive wear and tear.According to the material characteristics and screening requirements, choosing a screen material with good hardness and wear resistance can effectively slow down the wear rate of the screen.Check the status of the screen regularly during use. If the screen hole becomes larger or deformed, it should be replaced in time.For materials that are prone to static electricity, humidification and other methods can be used to avoid clogging caused by the material attached to the screen.

4. The screen spring is loose or fails

If the screen spring is loose or fails, it will affect the uniformity of the vibration force, resulting in the problem of material not being fed or deflected, which in turn affects the screening effect and may even cause equipment damage.

Solution: Check the status of the screen spring.If the spring is found to be loose or failed, it should be replaced in time.Check the fixing method of the spring.If the spring installation is not firm or the fixing bolts are loose, it needs to be adjusted and tightened.Regularly check the hardness and length of the screen spring.If you find that the hardness of the spring is low or the length changes greatly, you should consider replacing the spring.Pay attention to observe the working state of the screen plate during use. If problems such as screen plate jitter or offset are found, they need to be dealt with in a timely manner to avoid more serious consequences.

5. Material adhesion

Some materials are easy to adhere to the screen, which affects the screening efficiency and causes the material to drop or deviate.

Solution: For different types of materials, use appropriate screen materials to avoid materials sticking to the screen.For example, for materials that are easy to adhere, polyurethane screens with smooth surfaces and easy to clean can be selected.Through the humidification method, the static electricity of the material is suppressed, the adsorption force of the material on the screen is reduced, and the possibility of material adhesion is reduced.During the work process, regularly clean up the screen plate, screen and sieve holes to avoid material clumps or accumulations formed by long-term vibration that cause variety adhesion.For the case of severe material adhesion, you can consider increasing the vibration amplitude or adjusting the vibration frequency to promote the flow of material on the screen and make it easier to pass through the screen hole.

6. Air leakage at the joint

Air leakage at the joint of the vibrating screen leads to insufficient pressure, poor material flow, and may even cause damage to the equipment.

Solution: Check the status of the joint seals. If the seals are found to be aging, damaged or loose, they should be replaced or re-fastened in time.Check whether the joint connection is fastened. If the joint is found to be loose, the joint should be fastened in time.Pipe clamps can be added at the joints to improve the sealing performance of the pipes and avoid gas leakage.Regularly inspect and maintain the equipment in operation to ensure that the various components of the equipment are in normal operating condition, and promptly detect and deal with problems such as leaking joints.

There are many reasons for the material of the vibrating screen not being fed, not being fed, and deviating. It needs to be investigated from many aspects and corresponding measures should be taken.At the same time, do a good job of regular inspection and maintenance of the vibrating screen to keep it in good working condition and ensure the stability and work efficiency of the vibrating screen.