饲料普通粉碎系统和微粉碎系统关键技术参数优化
发布时间：2018-08-11 12:40
【摘要】：节能降耗作为我国饲料工业转变生产方式的重要发展方向,日益受到重视。作为饲料加工企业耗能最大系统之一,粉碎系统的节能降耗势在必行。本课题的目的一是通过对代表性锤片微粉碎机进行参数优化试验,获得其最佳操作参数和经济指标,实现节能降耗;二是对多家国内饲料企业的普通粉碎、微粉碎系统、超微粉碎的吸风系统进行现场测定,获得这些系统的参数配置,分析其合理性和共性问题,为这些系统的升级改造与节能降耗提供理论指导。试验的主要内容与结论如下:试验一:选择SWFP65×125型(200 kW)饲料锤片微粉碎机为研究对象,以锤片厚度(6 mm、5 mm、4 mm)、吸风量(风门开启程度)、筛片孔径(使用组合筛片时正反转)为研究变量,以粉碎机生产率、单位电耗、锤片磨损等为考核指标,进行了粉碎机工作参数优化试验。结果表明:锤片式粉碎机生产率随着吸风量从0增至最佳吸风量而持续增加,吨料电耗则持续降低;锤片厚度以5 mm厚吨料电耗最低;筛片的组合以锤片至上而下打向较小孔径筛片比打向较大孔径筛片的粉碎效果更好。该设备的最佳工艺参数组合为:锤片厚度5mm,吸风量为67%的风门开启度,筛片组合为0.8mm筛孔筛片迎向锤片打击方向。试验二:选择2台SWFP65×100C型(160 kW)饲料锤片微粉碎机为研究对象,吸风量(风门开启程度)为研究变量,以粉碎机生产率、单位电耗等为考核指标,进行了粉碎机吸风量优化试验。结果表明:1#粉碎机用4 mm孔径筛片,5 mm厚锤片,粉碎物料(鲤鱼料,草鱼料)时,最佳风门开启度为66%;4#粉碎机用3 mm孔径筛片,5 mm厚锤片,粉碎物料(玉米,豆粕)时,最佳风门开度为66%。试验三:选取江苏、广州等地的6家饲料厂的10条生产线,对其普通粉碎系统、微粉碎系统和超微粉碎系统的通风除尘系统进行现场测试。根据测试得到的风速、风量、风压、粉碎物料粒度、脉冲粉尘粒度、管道尺寸和缓冲斗尺寸等对整个吸风系统进行分析评价。结果表明:普通粉碎机和微粉碎机粉碎物料时产生的阻力至少比其空转状态时高1000 Pa;部分粉碎系统通风除尘管道过长,个别管道线路设计不合理;部分粉碎系统的风机配置与其系统所需的风压、风量要求不匹配;普通粉碎系统和微粉碎系统存在对物料粉碎过细,过度加工现象;粉碎机下缓冲斗尺寸偏小,沙克龙选型存在问题,致使大量物料被吸入脉冲除尘器;对通风除尘系统的运行参数无有效监控。在今后的粉碎系统设计工作中,应对这些问题加以改进。
[Abstract]:Energy saving and consumption reduction, as an important developing direction in the transformation of production mode in China's feed industry, has been paid more and more attention to. As one of the largest energy consumption systems in feed processing enterprises, the energy saving and consumption reduction of comminution system is imperative. The purpose of this project is to achieve energy saving and consumption reduction by optimizing the parameters of the representative hammer mill, and to obtain the best operating parameters and economic indexes, the second is to comminute and micro-comminute the common grinding system of many domestic feed enterprises. The ultrafine pulverized air suction system is measured on the spot, the parameter configuration of these systems is obtained, the rationality and common problems of these systems are analyzed, and the theoretical guidance is provided for upgrading these systems and saving energy and consumption. The main contents and conclusions of the experiment are as follows: experiment 1: select SWFP65 脳 125 (200kW) feed hammer micro-pulverizer as the research object. Taking the thickness of hammer (6 mm ~ 5 mm ~ 4 mm),) and the aperture of sieve (positive and negative turn when using combined sieve) as research variables, the productivity of pulverizer, unit power consumption, wear of hammer and so on were taken as test indexes. The optimization test of the working parameters of the pulverizer was carried out. The results show that the productivity of hammer mill increases continuously with the increase of air suction rate from 0 to the optimum suction rate, and the power consumption of per ton material decreases continuously, and the thickness of hammer plate is the lowest in thickness of 5 mm thick ton material. The crushing effect of the combination of the sieve flake is better than that of the larger aperture sieve sheet by hammering the top of the plate and striking down the smaller aperture sieve. The optimum technological parameters of the equipment are as follows: the thickness of the hammer is 5 mm, the air suction rate is 67%, and the combination of the sieve is the direction of the 0.8mm sieve screen facing to the hammer. Experiment 2: two SWFP65 脳 100C (160kW) feed hammer microcrusher were selected as the research object, the suction air volume (the opening degree of the air valve) as the research variable, the mill productivity, the unit electricity consumption as the examination index, the optimized test of the pulverizer suction air volume was carried out. The results show that the optimum opening degree of the air door is 660.The optimum opening degree of the air door is when the size of 4 mm sieve is 5 mm thick hammer and the crushing material (carp, grass carp) is 5 mm thick hammer with 3 mm aperture sieve, and when crushing material (corn, soybean meal), the optimum opening degree of the air door is 66m sieve with 3 mm diameter sieve with 5 mm thick hammer, and when crushing material (common carp, grass carp). The optimum throttle opening is 66. Test 3: ten production lines of 6 feed plants in Jiangsu and Guangzhou were selected and the ventilation and dust removal system of general pulverizing system, micro-comminuting system and ultrafine pulverizing system were tested on the spot. According to the wind speed, air volume, wind pressure, particle size of comminuted material, particle size of pulse dust, size of pipeline and size of buffer bucket, the whole suction system is analyzed and evaluated. The results show that the resistance of comminuted materials in ordinary pulverizer and micro-pulverizer is at least 1000 Pa higher than that in idle condition, and the ventilation and dust removal ducts of partial comminution system are too long and the design of individual pipeline lines is unreasonable. The fan configuration of partial comminution system does not match with the wind pressure and air volume required by the system; the ordinary comminution system and the micro-comminution system have the phenomenon of crushing the material too thin and overmachining; the size of the buffer bucket under the pulverizer is small, There are some problems in the selection of Shakelong, which results in a large number of materials being inhaled by a pulse dust collector, and no effective monitoring of the operational parameters of the ventilation and dust removal system. These problems should be improved in the design of crushing system in the future.
【学位授予单位】：河南工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S817.122
本文编号：2177019
[Abstract]:Energy saving and consumption reduction, as an important developing direction in the transformation of production mode in China's feed industry, has been paid more and more attention to. As one of the largest energy consumption systems in feed processing enterprises, the energy saving and consumption reduction of comminution system is imperative. The purpose of this project is to achieve energy saving and consumption reduction by optimizing the parameters of the representative hammer mill, and to obtain the best operating parameters and economic indexes, the second is to comminute and micro-comminute the common grinding system of many domestic feed enterprises. The ultrafine pulverized air suction system is measured on the spot, the parameter configuration of these systems is obtained, the rationality and common problems of these systems are analyzed, and the theoretical guidance is provided for upgrading these systems and saving energy and consumption. The main contents and conclusions of the experiment are as follows: experiment 1: select SWFP65 脳 125 (200kW) feed hammer micro-pulverizer as the research object. Taking the thickness of hammer (6 mm ~ 5 mm ~ 4 mm),) and the aperture of sieve (positive and negative turn when using combined sieve) as research variables, the productivity of pulverizer, unit power consumption, wear of hammer and so on were taken as test indexes. The optimization test of the working parameters of the pulverizer was carried out. The results show that the productivity of hammer mill increases continuously with the increase of air suction rate from 0 to the optimum suction rate, and the power consumption of per ton material decreases continuously, and the thickness of hammer plate is the lowest in thickness of 5 mm thick ton material. The crushing effect of the combination of the sieve flake is better than that of the larger aperture sieve sheet by hammering the top of the plate and striking down the smaller aperture sieve. The optimum technological parameters of the equipment are as follows: the thickness of the hammer is 5 mm, the air suction rate is 67%, and the combination of the sieve is the direction of the 0.8mm sieve screen facing to the hammer. Experiment 2: two SWFP65 脳 100C (160kW) feed hammer microcrusher were selected as the research object, the suction air volume (the opening degree of the air valve) as the research variable, the mill productivity, the unit electricity consumption as the examination index, the optimized test of the pulverizer suction air volume was carried out. The results show that the optimum opening degree of the air door is 660.The optimum opening degree of the air door is when the size of 4 mm sieve is 5 mm thick hammer and the crushing material (carp, grass carp) is 5 mm thick hammer with 3 mm aperture sieve, and when crushing material (corn, soybean meal), the optimum opening degree of the air door is 66m sieve with 3 mm diameter sieve with 5 mm thick hammer, and when crushing material (common carp, grass carp). The optimum throttle opening is 66. Test 3: ten production lines of 6 feed plants in Jiangsu and Guangzhou were selected and the ventilation and dust removal system of general pulverizing system, micro-comminuting system and ultrafine pulverizing system were tested on the spot. According to the wind speed, air volume, wind pressure, particle size of comminuted material, particle size of pulse dust, size of pipeline and size of buffer bucket, the whole suction system is analyzed and evaluated. The results show that the resistance of comminuted materials in ordinary pulverizer and micro-pulverizer is at least 1000 Pa higher than that in idle condition, and the ventilation and dust removal ducts of partial comminution system are too long and the design of individual pipeline lines is unreasonable. The fan configuration of partial comminution system does not match with the wind pressure and air volume required by the system; the ordinary comminution system and the micro-comminution system have the phenomenon of crushing the material too thin and overmachining; the size of the buffer bucket under the pulverizer is small, There are some problems in the selection of Shakelong, which results in a large number of materials being inhaled by a pulse dust collector, and no effective monitoring of the operational parameters of the ventilation and dust removal system. These problems should be improved in the design of crushing system in the future.
【学位授予单位】：河南工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S817.122
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