How to Avoid voice Source of Vibrating Screen?
Vibrating screen is vibrated by the circling motion. The screen line of material is long and the screening specification is various. Every screen specification is clear. It adopts the tubbish vibrator and eccentric adjustment, with the feature of strong vibration, high screening efficiency and small vibrating noise. This machine is durable, easy to maintain, safe to use. So it is widely used in mining, construction material, transportation, energy and chemical industry for classification.
Technology has tested the noise and vibration of the ZM2065 type vibrating screenused in the coal dressing in coal preparation plants. According to the test we found that the noise spectrum of the vibrating screen exhibits a bandwidth specialty of low intermediate frequency, and the sound level of the vibrating screen increases with the increasing of vibration frequency and amplitude. The noise of the vibrating screen has become the main noise of the coal preparation plant. Then how to reduce the noise?
To this end, they carried out the analysis the noise source and study on the noise reduction of the vibrating screen. Vibrating screen is the important screening tool of coal preparation plant. Due to its own characteristics, the vibrating screen can achieve the normal work of screening only through vibration, but the vibration is also the cause of the noise, and it is with high sound level and complex sound source.
The research adopts multipoint orientation and measurement of the vibration and noise, and then use the analyzer for spectrum analysis and coherence analysis of the vibration and noise signal recorded by the tape. Through the main noise source analysis of the sieve plate, side plates, vibration bearing and steel spring used by the vibrating screen, it proved that the noise test result is credible and the identification of the main noise source is correct, which provids academic basis for the preparation plant noise control. They proposed noise reduction measures according the analysis are as follows: To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like hammer crusher, Henan Hongxing is always doing the best in products and service.rotary dryer:http://www.china-mills.com/p15.html
1. Fasten all parts of the vibrating screen, especially the frequent replacing cribriform plate, avoid the extra vibration caused by the loosening individual components;
2. Replace the the punched steel plate by the smaller elastic modulus or low impact noise polyurethane sieve plate and rubber sieve plate;
3. Affix rubber plate in the sieve box side plates, the feeding inlet or outlet and the material receiving base, which can effectively inhibit the high frequency vibrationt of he side plate and reducing noise;
4. Use the flexible radials gear instead of steel gear;
5. Install soft sound insulation cover outer the vibration generator.
The round vibrating screen moves on a circular motion, which is a new kind of multilayer and high efficient vibrating screen. It uses the cylinder eccentric shaft vibration device and the eccentric weights to adjust the amplitude. And with the long material screening line, it has a variety of screening specifications. With many advantages, such as stable structure, strong exciting force, high efficiency, low noise pollution, durability, easy to maintain and safety in use, the round vibrating screen has been widely used in mine, construction, transportation, energy and chemical industries.
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