What is the reason for the violent shaking of the vibrating screen spring
Severe shaking of vibrating screen spring is a common phenomenon
Generally speaking, there are many reasons for the violent shaking of the vibrating screen, such as the deflection and deviation of the action direction of the exciting force generated by the vibration exciter of the vibrating screen; The spring damping system and different parts of the linear vibrating screen are faulty; The discounted vibrating screen is not placed on a horizontal plane, and the screen surface cannot maintain the radial clearance of horizontal bearings; Geometric accuracy of bearing; Bearing friction and lubrication; The outer ring fits with the support hole, etc.
Specifically, when the vibration exciter of the stainless steel vibrating screen vibrates eccentrically, if it is the reason of the vibration exciter, the weight of the eccentric block can be increased and the amplitude can be adjusted; If it is a vibration motor, the amplitude adjustment depends on the included angle of the eccentric blocks at both ends of the shaft to change the magnitude of the excitation force. If the included angle is small, the excitation force will increase and the amplitude will increase; On the contrary, the included angle increases, the excitation force decreases, and the amplitude decreases. Counter-weight eccentric vibrator can increase or decrease the counterweight on the flywheel and pulley to increase or decrease the amplitude of the vibrating screen.
When the vibration exciter is working, the centrifugal force generated by the eccentric weight makes the eccentric shaft bend, resulting in the relative deflection of the inner ring and outer ring of the bearing, and the eccentricity will produce the vibration caused by the rotation frequency and its various frequencies, so the inertia force and inertia couple generated during the operation will cause the dynamic reaction and vibration of the bearing, destroy the stable working state of the bearing and other components, and generate high-frequency vibration.
Applicable industries
Chemical industry: resin powder, pigment, washing powder, micro powder, paint, soda ash, lemon powder, rubber, plastic, etc.
Abrasives, ceramic industry: alumina, quartz sand, mud, sprayed soil particles, etc.
Food industry: sugar, salt, alkali, monosodium glutamate, milk powder, soy milk, yeast, fruit juice, soy sauce, vinegar, etc.
Paper industry: coating paint, clay mud, black and white liquid, waste liquid, papermaking liquid, wastewater recycling, etc.
Metallurgical industry: titanium oxide, zinc oxide, electromagnetic materials, metal powder, electrode powder, etc.
Pharmaceutical industry: Chinese medicine powder, Chinese medicine liquid, Western medicine powder, Western medicine liquid, Chinese and Western medicine granules, etc.
Environmental protection: garbage, human and animal excrement, and urine, waste oil, food wastewater, wastewater processing, etc.
If the excitation force of the stainless steel vibrating screen is too large, the bearing will bear a very large radial force, resulting in strong vibration. Vibration screen experts said that the higher the bearing accuracy, the smaller the vibration. When the waviness of the raceway, especially on the surface of the rolling body, has a great impact on the vibration of the bearing, the relative motion of the rolling body and the clearance between the cage and the rolling surface of the inner and outer rings will cause the vibration of the bearing.
resolvent:
Check whether the screen frame of the vibrating screen is a standard rectangle rather than a parallelogram; Check whether the spring support of the screen machine is uniform in the design and manufacturing process, and whether the selected spring stiffness is the same.
In addition, check whether the self-synchronization between the two vibrators is normal. Whether the adjusted phase angle of the main and auxiliary deflection blocks of the vibrator on both sides of the unified shaft is consistent, because it affects whether the excitation force is consistent.
Some techniques can prevent the violent vibration of the vibrating screen. For example, during each adjustment, the included angle of the eccentric blocks at both ends of the vibration motor is equal and deviates to the same side of the vibration motor. Check the rubber springs. There is no height difference between the springs. If there is, replace the damaged parts to solve the problem.
In addition, the balance of the linear vibrating screen equipment can also be checked, and the screen surface is in a horizontal position. The lifting angle of the equipment can also be recalculated to keep the lifting tension consistent
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FAQ
1. Who are we?
Our headquarters is located in Henan, China, and our factory was established in 2002. At present, there are more than 100 workers, technical engineers, foreign trade sales personnel, and administrative personnel. The factory covers an area of more than 2000 square kilometers and is mainly engaged in vibrating screening and conveying and feeding equipment.
2. How do we guarantee quality?
Always provide pre-production samples before mass production; Always carry out a final inspection before shipment.
3. What can you buy from us?
You can purchase a vibrating screen, roller screens, rotary screens, vacuum conveyors, mixer, and customized vibrating machinery and conveying equipment in our factory.
4. What are our strengths?
As one of the old enterprises in the screening industry, Tianfeng has provided a large number of screening equipment and systems at home and abroad. Mass production, rapid delivery, stable quality, affordable price, and excellent after-sales service have become the symbols of Tianfeng.
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