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在伏尔加格勒炼油厂使用的氨冷刮刀式套管结晶器,有KPC70-40、KAC70—40、KPC85-40、KAC85-40等型号。多年的经验表明,导向套、弹簧、三爪支持轴承的内表面、刮刀、单排和双排链轮等零件易磨损。为此,炼油厂机修车间作了改进,使原料温降增加了0.6倍,减少了检修工作量。图1为改进后的刮刀组装图。用35、45号钢制成的导向小轴3,代替以前用3号钢制作的导向套(φ28×3、33×3毫米);用10毫米厚的轴套2,代替以前φ2、φ26毫米的导向短轴;用断面4×30毫米的刮刀4,代替以前3×20毫米的刮刀;用弹簧1保证刮刀比较均匀的压在套管内壁上。图2为三爪支持轴承的改进。在轴承内加了卡布隆材料(并添加10%石墨)的轴套,
In Volgograd refinery ammonia cold scraper sleeve mold, KPC70-40, KAC70-40, KPC85-40, KAC85-40 and other models. Years of experience has shown that the inner surface of the guide sleeve, spring, three claw support bearings, scraper, single row and double row sprockets and other parts wear easily. To this end, refineries workshop made improvements to make raw material temperature drop increased by 0.6 times, reducing the maintenance workload. Figure 1 is an improved scraper assembly diagram. Instead of the guide sleeve (φ28 × 3,33 × 3 mm) made of steel No. 3 previously, a guide shaft 3 made of 35,45 steel was used instead of the previous φ2, φ26 mm Of the guide short axis; section 4 × 30 mm scraper 4, instead of the previous 3 × 20 mm scraper; with a spring 1 to ensure a more uniform pressure scraper on the inner wall of the sleeve. Figure 2 for the three-jaw support bearing improvements. In the bearing plus Gabelon material (and add 10% graphite) sleeve,