Extrusion discharging slag plug-preventing heat-isolating type high-temperature ash slag valve

Abstract

The invention discloses an extrusion discharging slag plug-preventing heat-isolating type high-temperature ash slag valve and relates to the technical field of valves. The extrusion discharging slag plug-preventing heat-isolating type high-temperature ash slag valve comprises an inner valve body and a valve plate. The inner valve body comprises a feeding pipe, a bowl-type expanding cavity with anannular head cover and a discharging pipe. The feeding pipe is inserted into the bowl-type expanding cavity at a certain depth, the insertion depth is greater than the maximum grain size of material particles, the distance between the inner wall of the bowl-type expanding cavity and the outer wall of the feeding pipe is greater than the maximum grain size of the material particles, and a free space without accumulated materials is formed therebetween; an insertion hole is formed in the side wall of the bowl-type expanding cavity, the valve plate stretches into the inner valve body from the insertion hole, the plane of the valve plate is perpendicular to the center axis of the bowl-type expanding cavity, the width of the valve plate is slightly greater than the diameter of the feeding pipe,and the valve plate slides along the radial direction of the bowl-type expanding cavity to open and close or incompletely close the valve. The high-temperature ash slag valve can solve the problem ofplug of the ash slag valve effectively, can be suitable for on-off control and flow control of a widely screened high-temperature solid particle material flow, and is good in heat-isolating propertyand safe and reliable to use.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a heat-insulating high-temperature ash valve for extrusion and anti-slag jamming. Background technique [0002] In the production of metallurgy, electric power, mining, coal chemical industry, chemical industry and other industries, a large amount of high-temperature ash will be produced, and these high-temperature ash needs to be transported and circulated through specific pipelines. The high-temperature ash valve is a device installed in the above-mentioned pipeline to control the on-off and flow rate of the high-temperature solid material flow in the pipeline. [0003] The existing high-temperature ash valve is only suitable for shutting off and regulating the flow of small particles or powdery solid materials, but for materials with wide screening, it is especially used to control the particle size distribution in the range of 0~50mm or even larger When the material is used, ...

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Problems solved by technology

[0004] In addition, in actual production, the temperature of the above-mentioned high-temperature material flow can reach about 1000°C. When it passes through the inside of the ash valve, the valve plate and valve body of the ash valve are easily deformed by heat, and their wear resistance is low, so they are easily damaged. Damage; and the surface temperature of the valve is high, and the exposed part of the valve body is "reddened" by the high temperature, which also has a serious impact on the safety of on-site operation and the reliability of the surrounding electrical components, and deteriorates the surrounding environment

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