When sieving with a vibrating screen, according to the nature of the material, various forms of sieve hole blockage will occur. The main reasons for the blockage of the sieve are as follows: (1) Contain a large number of particles close to the separation point of the sieve; (2) The material has a high water content; (3) Spherical particles or materials with multiple contact points to the sieve; (4) The material itself has strong static electricity; (5) Fibrous and dendritic materials; (6) There are many flake particles in the material; (7) The woven screen wire is thick.

Because most of the material particles that need to be screened are irregular, the cause of blockage is also diverse. In order to effectively prevent the screen of the vibrating screen from clogging, measures should be taken to address the reasons for the clogging of the above-mentioned screen holes. When the material particle size is finer, the mud content is more and the sieving particle size is smaller, the water will play a decisive role in the blockage of the screen. When the moisture in the material is greater than 5, if the material is dried unconditionally, the screen surface and sieve holes should be selected. Reasonable adjustment of the screen tension is an effective method to reduce the hole blocking of the screen. The reasonable tension causes the screen to produce a slight secondary vibration with the supporting beam, thereby effectively reducing the occurrence of hole blocking.

Ultrasonic vibrating screen converts 220v, 50HZ or 110v, 60HZ electric energy into 38KHZ high-frequency electric energy, and turns it into 38KHZ mechanical vibration, so as to achieve the purpose of screening and net cleaning. The system superimposes a high-frequency and low-amplitude ultrasonic vibrator on the screen on the basis of the traditional vibrating screen. The ultra-fine powder receives huge ultrasonic acceleration, so that the material on the screen surface is always kept in a suspended state, thereby inhibiting adhesion and friction. , flat drop, and other blocking factors, the material is discharged from the corresponding outlet to complete the screening work, especially suitable for the screening of ultra-fine materials.
Advantages of ultrasonic vibrating screen:
High penetration rate and high screening efficiency;
It really solves the screening problems of strong adsorption, easy clumping, high static electricity, high fineness and other materials;
No cleaning devices such as bouncing balls are added to avoid secondary pollution of materials, and the screen has a long service life;
Self-cleaning function, the screen will not be blocked.

Solve the problem from the material
The direct way to solve the problem of static electricity is to eliminate static electricity. Based on years of experience, Dayong Vibration will provide you with the following solutions:
Connect the ground wire to the screen of the vibrating screen (generally use a three-dimensional vibrating screen) to export the current;
Add antistatic agent to the material before feeding;
Increase the humidity in the workshop to increase the humidity of the material. Experiments show. When the air humidity is lower than 30%, it is conducive to friction to generate static electricity. If the humidity is increased to 45%, it will be difficult to generate static electricity.

The vibration motor runs with a lack of phase, the motor is noisy, and if it takes a long time to heat up, it will burn out due to heat. The voltage connected to the motor does not match the actual one.
The bearings of the vibration motor have not been maintained for a long time, and the grease or new bearings will be replaced. The heat will be generated during operation, and the motor will burn out during sweeping and boring.
The vibration motor is controlled by frequency conversion, and it runs at low frequency for a long time. Without strong cooling air, the motor is burned due to insufficient heat dissipation.
If it is a vibrating motor, the brake cannot be opened due to failure or is not fully opened, causing the motor to burn out.
The load is blocked or the motor is burnt due to overcurrent for a long time.
Vibration motor power supply voltage is too high. If the power supply voltage is too high, the motor winding coil will be burnt due to overcurrent.
Vibration motor insulation quality is poor. Such as turn-to-turn and phase-to-phase short circuit or breakdown with the shell.
The vibration motor is overloaded. If the power supply voltage of the missing phase is too low, mechanical failure, and power allocation margin is too small, they are all manifestations of overload. The most common causes of motor burnout are power supply phase loss and mechanical failure. Motor overload, motor short circuit, grounding, poor motor lubrication, etc. cause bearing damage and cause the motor to burn out;
The load is jammed or stuck, causing the motor to be overloaded and burned.
The insulation of the motor itself is aging, the motor is exposed to moisture or water, and the ventilation system of the vibrating motor is faulty

Dayong recommends using an ultrasonic vibrating screen. Because cobalt powder is a metal powder that is relatively difficult to sieve, cobalt powder has acid solubility, magnetism, and is relatively easy to agglomerate and has relatively strong adsorption, so the general rotary vibrating sieve sieves cobalt powder. On the basis of the rotary vibrating screen, an ultrasonic system is added. The ultrasonic system solves the phenomenon of material blocking, static electricity and agglomeration, and achieves the purpose of cobalt powder screening.