Composite type seal pneumatic door

Abstract

The invention discloses a composite type seal pneumatic door. The composite type seal pneumatic door comprises the structures of guide walking wheels, guide rails, a starting cylinder, a seal air inflation device, packing, a seal frame, a casing frame, abrasion-resistant baffles, independent double-rail baffles and the like, wherein guide walking wheels are fixed to the guide rails, the seal air inflation device is located on the upper side of the seal frame, the packing is located on the edge of the seal frame, the seal frame is arranged on the periphery of the casing frame, the abrasion-resistant baffles and the independent double-rail baffles are arranged along corresponding guide rails, the abrasion-resistant baffles are arranged on two layers and are arranged on the two sides of the independent double-rail baffles located in the middle of the casing frame, the two layers of the independent double-rail baffles move in parallel with the interval of 100mm, the distance between the independent double-rail baffles and the abrasion-resistant baffles on the two sides is 300mm, the packing is woven packing, and the opening and closing cylinder can independently control the abrasion-resistant baffles and the independent double-rail baffles. The composite type seal pneumatic door has the advantages of being reasonable in structure, easy and convenient to operate, high in processing quality, safe, reliable and the like. In addition, the working environment is good.

Description

technical field [0001] The invention relates to a sealed pneumatic door device, in particular to a composite sealed pneumatic door suitable for the occasions where rapid shut-off and isolation are required in six components of a thermal power plant. Background technique [0002] Pneumatic slide valve is a main control equipment for the flow or conveying volume of powder, grain material, granular material and small piece of material. It is widely used in metallurgy, mining, building materials, grain, chemical industry and other industries to control flow change or quickly cut off flow. . [0003] The tightness of the plug-in type isolation door is better than that of the baffle type air door. It is often used in the hot air duct at the entrance of the coal mill. In many projects, because the door is not tight, the hot air flows into the belt coal feeder when the grinding is stopped; the burner inlet isolation door , due to the high concentration of pulverized coal and the sa...

AI Technical Summary

Problems solved by technology

Once the dust accumulation is serious, the total friction force will increase geometrically, which will hinder the movement of the door panel and cause the damper seal to fail.

All power plants have always had the defect of lax shut-off. For example, the hot air cannot be isolated during the inspection and maintenance of the coal mill. The only way is to open the quick-closing valve at the outlet of the coal mill to connect with the furnace. Once the negative pressure of the furnace fluctuates, it becomes positive pressure. , there is a great risk of personal accidents

These defects greatly affect the overall operation of the equipment, and may even lead to major accidents such as furnace shutdown

Images