Large high-temperature releasing valve capable of rapidly replacing drive device

Abstract

The invention relates to a large high-temperature releasing valve capable of rapidly replacing a drive device. A valve body, a valve plate and a valve plate drive mechanism are included. The valve plate drive mechanism is composed of a both-way buffering drive device, a transmission shaft, a drive arm and a connection arm. A push rod of the both-way buffering drive device is hinged to one end of the drive arm, and the other end of the drive arm is connected with the transmission shaft through an opening elastic shaft hub. One end of the connection arm is connected with the transmission shaft through a split shaft hub, and the connection arm is fixedly connected with one half shaft hub. The other end of the connection arm is connected with the valve plate. Under driving of the both-way buffering drive device, the drive arm drives the transmission shaft to rotate, and then the connection arm and the valve plate are driven to integrally rotate. The large high-temperature releasing valve can achieve integral rapid replacement of the transmission shaft, the connection arm and the valve plate, the service life of a transmission shaft bearing and a valve port rubber seal ring can be further prolonged, the valve plate rotation position precision is improved, and safety of operation personnel is guaranteed.

Description

technical field [0001] The invention relates to the technical field of high-temperature valves, in particular to a large-scale high-temperature release valve capable of rapidly replacing a driving device. Background technique [0002] In case of emergency, the smoke and dust release system of the lime shaft kiln needs to close the main valve on the dust removal pipeline, open the smoke release valve on the smoke and dust pipeline, and release the smoke and dust in the kiln chamber; It is used in the middle of the valve, and the sealing performance is relatively high when it is closed. During maintenance, maintenance personnel need to enter the valve to carry out operations, mainly to replace the bearings and sealing rubber parts regularly. [0003] At present, the structure of the commonly used flue gas release valve has the following defects: First, because the temperature of the flue gas in the kiln is relatively high (sometimes exceeding 200°C) and the amount of dust is r...

AI Technical Summary

Problems solved by technology

[0003] At present, the structure of the commonly used flue gas release valve has the following defects: First, because the temperature of the flue gas in the kiln is relatively high (sometimes exceeding 200°C) and the amount of dust is relatively large, the bearing of the drive shaft in the flue gas release valve And the service life of the rubber sealing ring at the valve port is greatly affected, especially in recent years, large-scale kilns using low calorific value fuels have been developed and applied one after another, resulting in more and more flue gas emissions, and the caliber of the valve is also increasing. The replacement of these vulnerable parts on the valve is becoming more and more difficult, usually requiring a lot of maintenance time and labor; in addition, when replacing these valve internal parts, operators need to enter the valve pipeline in the kiln body, which is very dangerous

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