Gas-solid zero-leakage discharging sealing device

Abstract

The invention discloses a gas-solid zero-leakage discharging sealing device which is characterized by comprising a hinged shaft installed on the outer side of a discharge opening, a valve plate integrated with the hinged shaft and opened toward the discharge opening, a liner magnetic seal installed on the outer side surface, positioned at the same side together with the hinged shaft, of the discharging opening and a U-shaped magnetic seal installed on the other three outer sides of the discharging opening, wherein the surface, contacted with the U-shaped magnetic seal, of the valve plate is provided with a magnetizer. According to the invention, a zero-leakage sealing effect for gas and solid can be achieved; the structure of the sealing device is simple, the maintenance is convenient andthe feasibility is good; the air leakage ratio can be greatly reduced and the energy conservation and consumption reduction effects are obvious.

Description

technical field [0001] The invention relates to a gas-solid non-leakage discharge sealing device, which belongs to the technical field of sealing and is mainly used in the sealing of a dust discharge valve at the bottom of a bellows of a sintering machine and similar flap valves in the metallurgical industry. Background technique [0002] The dust discharge valve at the bottom of the bellows of the sintering machine in the metallurgical industry has to bear the negative pressure generated by the draft of the sintering machine and the wear of the solid sinter dropped by the sintering trolley, so it is easy to cause wear and air leakage, which affects the production efficiency and energy of sintering. consumption. At present, the ash unloading valves mainly include flapper valves, cone-shaped and disc-shaped flap valves, etc. These ash unloading valves have the same sealing surface for sealing gas and solid materials. Therefore, not only the solid materials wear the sealing su...

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Problems solved by technology

[0002] The dust discharge valve at the bottom of the bellows of the sintering machine in the metallurgical industry has to bear the negative pressure generated by the draft of the sintering machine and the wear of the solid sinter dropped by the sintering trolley, so it is easy to cause wear and air leakage, which affects the production efficiency and energy of sintering. consumption

At present, the ash unloading valves mainly include flapper valves, cone-shaped and disc-shaped flap valves, etc. These ash unloading valves have the same sealing surface for sealing gas and solid materials. Therefore, not only the solid materials wear the sealing surface, but the unloading The life of the ash valve is very short, and it needs frequent maintenance and replacement of parts, etc., and the solid material is stuck on the sealing surface, causing serious air leakage

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