Common faults and quick solutions of horizontal vibrating screen
As the core screening equipment in the mining, chemical, building materials and other industries, the stable operation of the horizontal vibrating screen directly affects the production efficiency. However, long-term high-intensity operation may cause equipment failure. This article summarizes the common faults of the horizontal vibrating screen and its professional solutions to help users quickly troubleshoot hidden dangers and reduce downtime losses:
Common faults and solutions of horizontal vibrating screen：
1. The equipment cannot start normally or suddenly shuts down:
The reasons for this problem include poor contact of the power line or unstable voltage, motor overload triggering protection, and vibration exciter bearing stuck. The solution is to check the power connection and test the voltage stability (it is recommended to be equipped with a voltage stabilizer), clean the material blocking the screen surface, reduce the motor load, disassemble the vibration exciter, and clean or replace the damaged bearing.
2. The screening efficiency is significantly reduced:
The key reasons for this problem are that the mesh size of the screen does not match the particle size of the material, the angle deviation of the vibration motor eccentric block (ideal angle: 45°~90°), and the insufficient tension of the screen surface leads to local relaxation. To solve this problem, you can replace the polyurethane screen with a suitable mesh size according to the material characteristics, adjust the eccentric blocks on both sides to the same angle (synchronous and symmetrical adjustment is recommended) or use professional tools to re-tighten the screen to ensure uniform force.
3. Abnormal noise occurs when the equipment is running:
Common reasons include loose bolts causing component collisions, lack of oil in the bearings or aging of seals, or the screen is damaged and hits the support beam. The specific maintenance process is to fully tighten all bolts after shutdown (the torque must meet the equipment manual standard), add high-temperature lithium-based grease to the bearings (replenish once every 500 hours), immediately replace the damaged screen, and check whether the support beam is deformed.
4. Abnormal damage to the screen:
It needs to be solved in a targeted manner according to the damage form. The corrosion-resistant rubber strip can be replaced in the tear state of the edge, and the buffer support plate or pre-screening device can be installed in the center perforation. The overall deformation should use a hydraulic tension system instead of manual installation.
5. The bearing temperature is abnormally high:
The fault needs to be eliminated step by step for temperature detection: use an infrared thermometer to locate the hot spot, lubrication check: confirm whether the grease model is correct (ISO VG150 grade is recommended), load test: heck whether the overload is caused by the imbalance of the eccentric block weight.
6. Material deviation or accumulation:
Adjustment techniques can be divided into: unilateral deviation: adjust the angle of the guide plate at the feed inlet and calibrate the horizontality of the screen body. Intermediate accumulation: reduce the feeder speed to 80%~90% of the rated value. End retention: appropriately increase the inclination of the screen surface (it is recommended to adjust within the range of 5°~10°)
Read this article and master the above common fault solutions for horizontal vibrating screens, which can reduce more than 60% of unplanned downtime. If the problem is complex or involves core components (such as the stator winding of the vibration motor), it is recommended to contact the manufacturer’s technicians for diagnosis. Regular maintenance records and equipment operation data analysis are the key to preventing failures!
