Exhaust device for elevator furnace system

Abstract

The invention discloses an exhaust device for an elevator furnace system. The elevator furnace system comprises M elevator furnaces. The exhaust device comprises M branch exhaust pipelines and one main exhaust pipeline, wherein the air inlet ends of the M branch exhaust pipelines are connected to the air outlets of the M elevator furnaces respectively; the air outlet ends of the M branch exhaust pipelines are connected to the main exhaust pipeline respectively; the main exhaust pipeline passes through a wall surface, and is fixed on the wall surface through a fastening mechanism; along an exhaust direction from the air inlet ends of the branch exhaust pipelines to the air outlet ends, a safety pneumatic pressure-reducing valve, an electromagnetic pneumatic valve and an exhaust fan are arranged in sequence on each branch exhaust pipeline; the outlets of the safety pneumatic pressure-reducing valves are directly communicated with the outside; first manual valves are arranged on the branch exhaust pipelines of the safety pneumatic pressure-reducing valves and the electromagnetic pneumatic valves; second manual valves are arranged on the branch exhaust pipelines at the air outlet ends from the exhaust fans to the branch exhaust pipelines.

Description

technical field [0001] The invention relates to the technical field of bell furnaces, in particular to an exhaust device for a bell furnace system. Background technique [0002] Such as figure 1 As shown, in the prior art bell furnace system, it includes multiple bell furnaces, each bell furnace is provided with an independent exhaust passage, and the exhaust pipe extends out of the roof for exhaust. From the inlet to the outlet, a safety pneumatic pressure reducing valve, an electromagnetic pneumatic valve and an exhaust fan are installed in sequence. [0003] The above-mentioned design of the prior art has the following disadvantages: First, it is necessary to open a plurality of through holes in the roof, and the exhaust passages of multiple bell furnaces pass through the through holes in the roof, which affects the overall appearance of the whole factory building. At the same time, due to the exhaust High-temperature gas flows in the channel, so the temperature of the ...

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Problems solved by technology

[0003] The above-mentioned design of the prior art has the following disadvantages: First, it is necessary to open a plurality of through holes in the roof, and the exhaust passages of multiple bell furnaces pass through the through holes in the roof, which affects the overall appearance of the whole factory building. At the same time, due to the exhaust High-temperature gas flows in the channel, so the temperature of the pipe wall will be high, which increases the difficulty of waterproofing the roof around the exhaust channel. Secondly, because the exhaust channel cannot be supported and reinforced on the roof, the exhaust channel protrudes from the roof. The height is affected, which is not conducive to the diffusion of exhaust gas; moreover, because the safety pneumatic pressure reducing valve is directly connected to the exhaust air passage, that is, the inlet and outlet of the safety pneumatic pressure reducing valve are connected to the exhaust air passage, while the safety pneumatic pressure reducing valve The pressure valve starts to work when the bell furnace enters the internal circulation state, so when the bell furnace is in the external circulation state, the safety pneumatic pressure reducing valve is easily blocked and fails

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