The stacked high-frequency vibrating fine screen is driven by two electric vibrators with opposite directions of motion to move the screen frame in a straight line. The combined force of the two electric vibrators acting on the screen frame passes through the center of gravity of the screen frame. Therefore, the magnitude of the excitation force at each point on the sieve frame is consistent. The slurry is fed from the upper or lower part of the ore separator, evenly divided into multiple paths by the ore separator, and then enters multiple ore feeders through feeding hoses. The ore feeder evenly sprinkles the slurry onto the upper end of the sieve surface. The material on the screen surface undergoes continuous high-frequency and small amplitude vibration, causing continuous jumping on the inclined screen surface and dispersing the material. Fine grained material passes through the sieve holes during the mixing process, which is called undersized product, while material larger than the sieve holes continuously jumps forward on the inclined screen surface and jumps out of the screen to become undersized product.
The difference between this device and a single-layer high-frequency vibrating fine screen is that multiple screen frames overlap and are driven by two electromagnetic vibrators to move in a straight line. The force on each point of the screen frame is the same, which improves the screening efficiency and extends the service life of the device. This device has the advantages of high screening efficiency, large processing capacity, compact and reasonable structure, small footprint, and low power consumption.
1. This device has a small footprint. Multiple parallel connections can be achieved, and all screening frames adopt a stacked structure, which extends the original multi-channel feeding principle. By combining the effective screening areas of multiple screening machines into the footprint of a single screening machine, the efficiency and processing capacity of screening have been improved, making the entire equipment appear more compact and increasing the flexibility of installation on the production site.
2. The screen frame is supported by rubber spring suspension, which has low noise, low power consumption, and low equipment dynamic load, so there are no special requirements for installation foundation.
3. Adopting high-quality, high porosity, anti clogging and wear-resistant polyurethane screen mesh, and using specialized ore separators and feeders to force the distribution of slurry to the ore, the material can be evenly spread on the screen surface under the premise of high output, thereby reducing the impact of slurry on the screen mesh due to excessive flow velocity and increasing the service life of the screen mesh, with an average service life of more than 6 months.
4. The laminated high-frequency fine screen can be equipped with interlayer anti blocking polyurethane screen wear-resistant mesh to reduce screening costs. The screening machine can be equipped with a secondary slurry tank or a screen surface replenishment water device to screen out fine-grained materials from the feed to the limit. Now, with the invention of the high-frequency fine screen with laminated vibration, the classification of wet fine-grained materials has made it possible to screen fine-grained and fine-grained materials that were previously considered difficult or even impossible to screen. The screening box plate of the equipment is made of low-alloy high-strength structural steel, and is manufactured using CNC cutting technology. The overall vibration of the screening box eliminates stress, completely avoiding secondary deformation of the screening box, effectively increasing the anti-corrosion and wear resistance of the equipment, and thus extending its service life.
5. During production, the equipment adopts frequency conversion control, which can effectively control the screening efficiency.
6. The vibration component of the laminated screening machine is a vibration motor, which adopts a dual vibrator configuration with low energy consumption and high efficiency. The motor installation uses thread anti loosening technology, which does not loosen and improves the reliability of the vibration source. In addition, the linear vibration motion mode makes the flow area of the screened material longer and the transmission speed faster, which better meets the screening capacity and screening effect.
