Efficient pulverized coal industrial boiler

Abstract

The invention provides an efficient pulverized coal industrial boiler and belongs to the technical field of industrial boilers. The efficient pulverized coal industrial boiler comprises a burner and a pulverized coal conveying pipe; an accommodating guide shell is connected between the pulverized coal conveying pipe and the burner in a sealed mode; a cylindrical part is rotatably connected into the accommodating guide shell; semi-cylindrical groove assemblies are evenly embedded on the axial side face of the cylindrical part; an arc-shaped same-direction tooth section and an arc-shaped reset tooth section are fixedly arranged on the inner side wall of the accommodating guide shell; and the accommodating guide shell is connected with a supplement chamber in a sealed mode. According to the efficient pulverized coal industrial boiler, through the combined action of the accommodating guide shell, the cylindrical part, the semi-cylindrical groove assemblies, the arc-shaped same-direction tooth section, the arc-shaped reset tooth section, the supplementing chamber and a supplementing control assembly, pulverized coal finally flowing into the burner keeps high accuracy and uniformity, adhesion and accumulation of the pulverized coal are greatly reduced, the influence of pulverized coal accumulation on the accuracy and uniformity of the pulverized coal feeding amount is effectively avoided, and the accuracy and uniformity of the pulverized coal feeding amount are ensured.

Description

technical field [0001] The invention relates to the technical field of industrial boilers, in particular to a high-efficiency pulverized coal industrial boiler. Background technique [0002] Pulverized coal industrial boiler is a new type of coal-fired industrial boiler with pulverized coal combustion technology as the core. Generally, pulverized coal is sent to the burner through the pulverized coal pipeline, and the burner is sprayed into the furnace for uniform combustion, and then the chemical energy of combustion is transformed into Compared with traditional boilers, pulverized coal industrial boilers are more energy-efficient, clean and environmentally friendly, and have a higher level of automation. [0003] However, in the actual use of pulverized coal industrial boilers, there are still many problems that will affect the efficiency of boiler production capacity. Among them, the transportation process of pulverized coal is an important issue that affects the producti...

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Problems solved by technology

[0003] However, in the actual use of pulverized coal industrial boilers, there are still many problems that will affect the efficiency of boiler production capacity. Among them, the transportation process of pulverized coal is an important issue that affects the production efficiency of boilers. The existing pulverized coal transportation mainly includes pipelines Direct conveying, spiral pipeline conveying and belt drive conveying, all three conveying methods have the defect of reducing boiler production efficiency, as follows:

[0004] 1. Direct pipeline transportation has low accuracy in the control accuracy of the pulverized coal feed and the uniformity of the feed, and as the pulverized coal continues to adhere, the accuracy will continue to decrease, which in turn will reduce the injection of the burner This not only reduces the capacity of the boiler, but also under the same energy consumption, the capacity of the boiler is directly proportional to the amount of pulverized coal injected, which will cause a serious waste of resources

[0005] 2. Spiral pipeline transportation has high precision in the control precision of pulverized coal feed and the uniformity of feed, but its structure is relatively complicated and difficult to clean. The amount of pulverized coal adhered per unit time is relatively large, and the corresponding continuous The accumulated amount of adhesion is large, and long-term use will seriously reduce the conveying accuracy and uniformity of pulverized coal, which will also reduce the efficiency of boiler capacity and cause waste of resources

[0006] 3. Belt transmission is between the above two transportation methods in terms of the accuracy and uniformity of pulverized coal transportation, and it is also between the above two methods in terms of the adverse effects of pulverized coal adhesion and the degree of difficulty in cleaning, so that it not only has The problem of relatively low accuracy and uniformity, and the waste of resources due to the influence of coal dust adhesion

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