Gas distribution device for rotary atomization and evaporation

Abstract

The invention discloses a gas distribution device for rotary atomization and evaporation. According to the gas distribution device for rotary atomization evaporation, a gas inlet flow channel is a horizontally-arranged rectangular straight cylinder flow channel, a partition plate is arranged in the gas inlet flow channel and divides the gas inlet flow channel into a left flow channel body and a right flow channel body, a gas distribution flow channel is arranged at the rear end of the gas inlet flow channel, and a flow guide plate is arranged at the joint of the gas inlet flow channel and thegas distribution flow channel; the gas distribution flow channel is vertically arranged, the upper half part of the gas distribution flow channel is a square straight flow channel, the lower half partof the gas distribution flow channel is a cylindrical flow channel, and the joint of the upper half part and the lower half part is in smooth transition by using a triangular flat plate; the lower end of the gas distribution flow channel is connected with a gas outlet flow channel, the gas distribution flow channel and the gas outlet flow channel are concentrically arranged in the vertical direction, and an inner-layer rotational flow blade and an outer-layer rotational flow blade are arranged at the joint of the gas distribution flow channel and the gas outlet flow channel through a layeringpartition plate; the gas outlet flow channel is of a conical structure, a vertical cylindrical center cylinder is arranged in the center of the gas distribution flow channel and the gas outlet flow channel, the lower end of the center cylinder is conical, a heat preservation layer is arranged in the center cylinder, an atomizer installation structure is arranged at the lower end of the center cylinder, and a movable cover plate is arranged at the upper end of the center cylinder.

Description

technical field [0001] The invention relates to the technical field of gas distribution devices, in particular to a gas distribution device for rotary atomization evaporation. Background technique [0002] Evaporation and drying of liquids by means of rotary atomization evaporation is a common drying and granulation method. The main method of rotary atomization is that when the liquid is sent to the high-speed rotating atomizing disc, due to the action of centrifugal force, the liquid is stretched into a thin film or drawn into a filament, which breaks and disperses into droplets at the edge of the atomizing disc. The size of the droplets depends on the rotation speed and the amount of liquid handled. The atomizer can ensure that the particle size distribution of the atomized droplets does not change significantly when the liquid flow rate does not change greatly. The atomized liquid is fully and uniformly mixed with the high-temperature gas, so that the mist droplets are ...

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Problems solved by technology

[0003] Existing gas distribution devices generally adopt a volute distribution structure, and the gas distribution device with this structure generally has the following defects: 1. The path of gas passing through the gas distribution structure is too long, resulting in increased resistance of the gas along the way, requiring a larger power delivery device; Wind and induced air devices, in some places where the space is limited, it is impossible to install a matching gas distribution device

2. The design of the volute structure leads to a large volume of the gas distributor, which requires a large margin of installation space on site, and is equipped with large evaporation equipment; 3. When the gas distribution device handles different gas volumes, the flow field effect is very different. The whole set of evaporation equipment can only evaporate and dry a fixed amount of droplets, and the drying effect on other processing conditions is very poor; 4. The structure and shape of the volute is irregular, the production and processing are difficult, the production cycle is long, and the production cost is high; 5. 2. The rigidity of the volute structure is poor, and it is necessary to adopt the shape of the supporting and strengthening structure temperature device, and the supporting and strengthening structure will affect the flow field effect of the gas, and the erosion and wear of the gas on the reinforcement will easily lead to damage to the structure of the distribution device, affecting 7. The matching degree between the gas distribution device and the rotary atomizer is not high, which leads to difficulties in the installation, disassembly and maintenance of the atomizer, and affects the efficiency of the normal operation of the system

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