Raymond mill device without fan dust accumulation

Abstract

The invention discloses a Raymond mill device provided with a fan capable of preventing dust accumulation. An air circulation powder grinding and discharging system consists of the fan, a Raymond mill, a cyclone separation discharging device and an air-returning pipe; a pressure-equalizing exhaust branch pipe is connected with the upper end of a cyclone pipe, a plurality of cyclones are arranged in the cyclone pipe, the lower end of the cyclone pipe is tangentially connected with a cyclone separator, and a lower pipe port of the cyclone separator is immersed in a circulation water tank which is connected with the upper end of the cyclone pipe; each blade of an impeller of the fan adopts a hollow and inversed drop-shaped structure; the outline of the fan is an involute. Low-resistance and pressure-equalizing exhaust is realized by means of the cyclone pipe and the cyclones, and dust overflowing caused by positive pressure of the system is eradicated; wet-process efficient dust removal and mineral powder recovery are realized through the circulation water tank; the blades adopt the hollow and inversed drop-shaped structures, so that dust on the impeller of the induced draft fan is cleared in time, the impeller strength of the fan is increased, the stability is enhanced, safety accidents caused by dust accumulation are effectively prevented, and the Raymond mill device has a wide application prospect.

Description

technical field [0001] The invention relates to a Raymond mill device, in particular to a Raymond mill device in which a fan does not accumulate dust. Background technique [0002] Raymond mill is a kind of equipment widely used in ore crushing and grinding. Due to its strong adaptability and high cost performance, it has become the first choice for ore crushing and grinding. Raymond mill is an air flow internal circulation type powder output, due to the expansion of heated gas during the crushing process, if the ore has a high water content or water enters, not only will the output of the powder be reduced, but also a large amount of gas will be caused by the vaporization of the water. swell. Therefore, all Raymond mills are equipped with pressure equalizing exhaust branch pipes to input excess gas into the bag filter for purification and discharge, so as to avoid dust leakage caused by positive pressure in the crushing system, but when the humidity of the bag is high, dus...

AI Technical Summary

Problems solved by technology

Once some hardened dust is shaken off by vibration, it will immediately leave the dynamic rotation balance of the fan, and then generate strong vibration, which may cause serious personnel and equipment safety accidents

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