A Pneumatic Conveying Powder Flow Velocity Regulator with Adjustable Double-side Baffles

Abstract

The invention discloses a pneumatic conveying powder flow rate adjustment device with adjustable double-sided baffles, which includes a flange (1), a pipeline arc (2), an upper adjustable baffle (3), a lower adjustable baffle (4), The rotating shaft (5), the actuator (6) and the sealed case (7); the feature is that: the adjustable baffles (3, 4) can rotate within 0 to 90 degrees; the rotating shaft (5) A sealing ring device (8) is provided between the sealed box shell (7); a windward liner (9) is provided on the windward side of the sealed box shell (7). The double-sided adjustable baffles (3, 4) of the present invention control the rotation angle by the actuator (7) through the rotating shaft (5), control the flow area of ​​the pipeline, change the resistance of the pipeline, and achieve multi-pipe flow velocity in industrial applications purpose of balance. The invention has the advantages of large adjustment range, little influence on the convection pattern, compact appearance and wear resistance.

Description

technical field [0001] The invention relates to a flow velocity regulating device for pneumatic conveying powder with adjustable double-side baffles. Background technique [0002] Pneumatic conveying is an effective method of transporting granular solids in pipelines by using airflow. It is widely used in the transportation of powders in various industrial sectors, such as pipeline transportation of solid fuels such as coal powder in thermal power plants. [0003] For coal-fired boilers, the balance of air powder distribution in the primary air duct has an important impact on the stability, economy, safety and environmental protection of the boiler operation. The uneven distribution of the primary air powder will deflect the flame center of the furnace, resulting in excessive temperature and combustion pulsation in the local area of ​​the furnace. This will not only cause unstable combustion, slagging on the inner wall of the furnace, and even cause serious hazards such as ...

AI Technical Summary

Problems solved by technology

The traditional adjustable shrinkage cavity cannot be adjusted flexibly and effectively in the case of running with powder, so it cannot achieve a good adjustment effect

[0008] 2. The influence of traditional adjustable shrinkage cavity on the flow pattern of pulverized coal is not good

However, this adjustment method will have a great impact on the flow pattern of pulverized coal, resulting in uneven flow of pulverized coal

[0010] 3. The space of the traditional adjustable shrinkage cavity structure is too large and inflexible

[0011] The traditional adjustable shrinkage cavity adopts double-sided in-line baffles, which has a large structural space, but the actual industrial site often does not have enough space to install the traditional adjustable shrinkage cavity device

[0012] 4. The traditional adjustable shrinkage cavity is easy to accumulate coal dust and cause jamming

[0013] The traditional adjustable shrinkage cavity adopts double-sided in-line baffles, and the baffles are vertical to the pipeline. The powder is easy to accumulate in the gaps of the baffles, resulting in jamming

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