Dry quenching rotating seal valve repair and new system

Dry quenching rotating seal valve repair in 2019 - and the new system 12 - 03 ( Wuhan wuhan bayhood machinery manufacturing co. , LTD. ) A background, coke quenching steel mills coking plant take commonly: 1. Water spray wet coke quenching 2. Inert gas dry quenching because of the dry quenching on the energy saving, environmental protection, the coke quality is better than wet coke quenching, National Development and Reform Commission (NDRC) as its key '15' promotion project, has been widely used. Rotary discharge valve, Also called rotating seal valve, sealing valve) Is the key equipment in coking plant project of dry quenching, installed at the bottom of the dry quenching furnace into the mouth connected to the vibration feeder, the discharging mouth in focal chute is connected. Its role is to put the vibration feeder quantitative discharge coke continuous discharge in closed condition. Is one kind has the sealing performance of multiple formats rotating feeder, can continuous quantitative discharge, but also has good sealing and abrasion resistance. Because the rotating seal valve in the bottom of the dry quenching furnace, the use environment is bad. Is responsible for the long time continuous discharge coke and coke consumption continues to wear on the body wall and rotor is also constantly, at the same time, the whole body internal contains the mixed gases such as CO, continuous quantitative coke making rotating seal valve easy to damage, according to the using situation in about a year must be fixed referrals to the disintegration of professional manufacturers. In only a small amount of domestic factory to repair, and largely concentrated in the north, central and southwest regions such as the steel mill to the northern maintenance cycle is too long, often cannot meet the needs of the major steel mills. Second, wuhan wuhan bayhood machinery manufacturing co. , LTD. My company is located in wuhan, central China geography distance each big steel mills have greater advantages. The company has large CNC boring and milling machine, large vertical lathe, large lathe and other equipment, can satisfy the seal valve repair hardware conditions. Since 2009 established in view of the rotating seal valve repair class, especially the seal repair to get the patent for utility model, with the corresponding intellectual property rights, more mature technology, repair experience. Now for wisco, EGang, metallurgical steel, tongling yaxing, kun steel, panzhihua iron and steel and other major steel mills to repair the rotating seal valve were 50 various types, repair the service life of the rotating seal from the original 12 months to 18 months, the owner's widespread high praise. On this basis for wisco etc new seal valve replace imported products, get dramatically reduce prices, reducing the production costs for the enterprise. Company performance rotating seal valve cover the main unit list three common failure forms, rotating seal valve and fix more than 1, the seal failure due to insufficient sealing gas source of the gas pressure and lubricating oil lubrication effect is poor. To prevent hot coke powder into the valve body on both sides of the bearing housing, rotor and the body corresponding Settings from hard and soft sealing mechanism, the formation of sheng material parts from the bearing box cavity, and the isolation of the cavity into the auxiliary seal nitrogen purging, cooling. Seal by the automatic grease feeder timing quantitative supply of lubricating grease, auxiliary seal nitrogen on both sides of the sealed cavity filled with rotor at the same time. Auxiliary seal nitrogen pressure to be higher than rotating seal valve internal dust gas pressure, in order to prevent the hot dust on both sides of gas into the sealed cavity. If auxiliary seal gas pressure is too low or break wind, the coke powder first into the seal, the sealing pair first, then gradually grinding body wear the static ring wear, and on both sides of coke powder a lot into the sealed cavity. Seal damage need to overhaul the rotating seal valve, replace the seal in the attachment. Slider wear after repair of slider 2, body, rotor wear-resisting material wear such long-term use of normal wear failure forms belong to equipment, mainly has: ( 1) Body wear resistant plate ( 2) On the rotor abrasion and plate and blade plate ( 3) Into the mouth, the discharging mouth wear body liner wear repair and the rotor plate wear of the valve body repair after 3, external rotor parts damaged mainly have motor loss ( Overload operation, lack of phase) , deceleration machine damage ( Poor lubrication, overload running) , lubrication system ( Oil plug, damage to the distributor,) , automatic to fat devices such as external parts damaged. Bearing damage replace new bearing motor reducer failure to replace new motor reducer four, conclusion rotating seal valve cost is high, improper use easy to damage, and failure led to the production of dry quenching system, thus the service life of rotating seal valve, timely repair is an important factor in coking plant to reduce costs to create benefits.