A three-proof air powder regulator

Abstract

The invention relates to an air dust regulator for preventing blocking, abrasion and dust accumulation. The air dust regulator comprises a valve body as well as a left shell plate and a right shell plate which are arranged on the two sides in the valve body, wherein the left shell plate and the right shell plate are both connected with a screw rod; one end of the screw rod penetrates through the valve body and is exposed outside the valve body; a hand wheel is fixed at the end of the screw rod; a fine tuning dial plate is arranged on the hand wheel; opening indicators are respectively arranged on the lateral edges of the left shell plate and the right shell plate; scale plates corresponding to the opening indicators are arranged on the valve body; a left core plate and a right core plate are respectively fixed on the left shell plate and the right shell plate; sealing slots are formed in the inner walls of the left shell plate and the right shell plate; and sealing strips matched with the sealing slots are arranged in the sealing slots. Compared with the traditional products, the air dust regulator for preventing blocking, abrasion and dust accumulation, provided by the invention, has the characteristics of blocking prevention, abrasion prevention and dust accumulation prevention; the air dust regulator can extremely prevent a large amount of coal dust from accumulating in the space encircled between the left and right core plates and the valve body; and the air dust regulator further can guarantee no coal dust accumulated on the closed position between the left and right core plates.

Description

technical field [0001] The invention relates to a three-proof wind powder regulator. Background technique [0002] The air powder regulator is used in the powder feeding pipeline of the coal-fired boiler to adjust the pressure balance of the air powder two-phase flow between multiple pipes to ensure that the air pressure and flow rate between the boiler burners are the same. The air powder regulator passes through the left and right The core plate takes the center line of the valve body as the symmetrical center to perform relative reciprocating motions inside and outside to adjust the opening area, thereby achieving the effect of adjusting the flow rate of pulverized coal. Due to structural limitations, the left and right core plates and the left shell plate 1. There is a gap between the right shell plates. When the pulverized coal flows through the adjustable shrinkage hole, the pulverized coal can easily flow into the left and right core plates through the gap and form th...

AI Technical Summary

Problems solved by technology

[0002] The air powder regulator is used in the powder feeding pipeline of the coal-fired boiler to adjust the pressure balance of the air powder two-phase flow between multiple pipes to ensure that the air pressure and flow rate between the boiler burners are the same. The air powder regulator passes through the left and right The core plate takes the center line of the valve body as the symmetrical center to perform relative reciprocating motions inside and outside to adjust the opening area, thereby achieving the effect of adjusting the flow rate of pulverized coal. Due to structural limitations, the left and right core plates and the left shell plate 1. There is a gap between the right shell plates. When the pulverized coal flows through the adjustable shrinkage hole, the pulverized coal can easily flow into the left and right core plates through the gap and form the enclosure between the left and right shell plates. In the space, with the continuous transportation of pulverized coal, accumulation occurs, and after the left and right core plates are displaced outward, the pulverized coal will easily flow between the left and right core plates. After internal displacement, it will accumulate in the closed position of the left and right core plates, resulting in the inability of the left and right core plates to close tightly, affecting the accuracy of the pulverized coal delivery flow, and the accumulation of pulverized coal is very prone to deflagration, resulting in possible The shrinkage control valve and the pipes connected to it are burned out, affecting the normal operation of the unit, and even causing a fire in severe cases

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