Scattering device capable of automatically sucking in raw material powder

Abstract

The invention discloses a scattering device capable of automatically sucking in raw material powder, and relates to the technical field of cement production. The device comprises an energy recovery mechanism, a raw material scattering mechanism and raw material conveying mechanisms. The energy recovery mechanism is arranged in the middle in an air pipe of a preheater and is used for recovering wind energy and heat energy carried by ascending hot air flowing in the air pipe. The raw material scattering mechanism is arranged over the energy recovery mechanism and used for scattering raw materialpowder into the air pipe of the preheater, and the raw material conveying mechanisms are arranged on the periphery of the raw material scattering mechanism in a circumferential array manner and usedfor conveying raw material powder into the raw material scattering mechanism. According to the energy-saving scattering device, the heat energy and wind energy of the ascending hot air flowing in theair pipe are recovered as much as possible, the recovered heat energy is used for preheating raw material powder in advance, and the recovered wind energy is used for doing work and being converted into mechanical energy to provide power for conveying of raw material powder. Under the condition that other energy sources are not used, the scattering effect of raw material powder is effectively improved, and meanwhile the preheating effect is also improved.

Description

technical field [0001] The invention relates to the technical field of cement production, in particular to a spreading device for self-absorbing raw meal powder. Background technique [0002] In actual cement production, raw meal powder will be added to the air duct of the preheater, and the raw meal powder will be preheated by using the rising hot air flow circulating in the air duct. In order to improve the preheating effect, the preheater will A spreading device is installed in the air duct to spread the material evenly into the air duct. [0003] But the following defectives generally exist in existing spreading device: [0004] (1) The recovery of heat energy is limited, and the preheating effect is average. After the existing material spreading device sprinkles the raw meal powder into the air duct, the falling raw meal powder will come into contact with the rising hot air flow and undergo heat exchange, but the height of the air duct itself is limited, so the time f...

AI Technical Summary

Problems solved by technology

After the existing material spreading device sprinkles the raw meal powder into the air duct, the falling raw meal powder will come into contact with the rising hot air flow and undergo heat exchange, but the height of the air duct itself is limited, so the time for heat exchange between each other limited, resulting in limited heat energy obtained by the raw meal powder, which will directly affect the preheating effect of the raw meal powder

[0005] (2) The structure is too simple and the function is too single

The existing material spreading device can only realize the scattering of raw meal powder into the air duct, but when lumps or concentrated materials appear in the raw meal powder, it is impossible to do so without the help of corresponding crushing equipment for pretreatment. To spread the material evenly, this will inevitably affect the preheating effect of the raw meal powder

[0006] (3) The spreading material cannot be adjusted, and the preheating result is unpredictable

Although the existing material spreading device will be equipped with corresponding feeding equipment driven by electricity, the feeding material of the feeding equipment is fixed and cannot be adjusted. Adjust the amount of raw meal powder sprinkled, which can not guarantee the uniformity of the preheating results of the thrown raw meal powder

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