| At present, the main way of farmland plastic recycling is divided into artificial reclaim farmland film and mechanical recycling plastic film.However,The labor intens ity of the former is greater and the efficiency is lower.Therefore, the use of mechanized recycling plastic has become an inevitable trend. However,It can’t very well satisfied with plastic recycling requirements for the existing residual film recycling machinery and equipment.Thus,in view of the problems that films and sundries is difficult to separate as well as the effect of take off film is not well in plastic film recycling process,which the author researches and designs a kind of gripping and deliver ing farmland residual film recycle membrane as well as key components. The results of research for developing efficient new residual f ilm recycling machine has certain guiding significance.In this paper,the tensile properties and the suspension velocity of the residual film are obtained by experiments,which on the basis that the mechanism analysis of membrane and sundry separation as well as air force separating residual film was studied.The research methods of theoretical calculation and analysis, computer simulation, experimental study were applied in the paper. The mechanism of membrane and sundry separation is studied, and the effect of the arrangement of the clamping plate, the residual film conveying chain, the operating speed on the clamping and conveying residual film were analyzed. It is concluded that the clamping plate and the residual film conveying chain are transverse symmetrical structure, and the number of arrangement of the residual film transport chain and clamping plate as well as hold transport plastic film conveying speed should be appropriate.On the contrary,the separation rate of plastic film and sundries will be lowed in residual film recycling process. The average clamping force of the clamping plate holding residual f ilm was analyzed in the recovery process of residual film and the mechanical equation is established by using dynamic knowledge,and concluded that the average clamping force on the single plastic film conveying chain is 29.1N.The arrangement number of residual film transport chain and clamping plate were analysis was analyzed,which concluded that the arrangement of the residual f ilm transport chain and the number of the clamping plates has a great inf luence on the ratio of membrane and sundries separate.Then,the mechanism ofair force separating residual film is studied,which the result is that the airflow force required for the pneumatic membrane is at least 1.12 N and the airflow rate is 10.5m/s.The motion of the residual film was analyzed in the air force, and the trajectories of the residual film was simulated by using ADAMS software in the pneumatic action. Finally, the optimum air flow off film position point is determined and that is the gas outflow angle is 38 degrees. The model of the device of air force separating residual film is established in ANS YS,and then using Fluent module to simulate and analyze the effect of different air flow outlet shape on the pneumatic membrane.The result is that it is better to use the circular air flow outlet to the pneumatic membrane. Finally, the performance parameters of membrane and sundry separation is studied by field exper iment,which The optimal parameter combination of the factors affecting the membrane separation efficiency is determined by using the MATLB optimization method.According to the optimized parameter combination further field test, the performance test results show that in plastic film clip holding and conveying speed 1.08 m/s,clamping plate arranged root number is12,the residual film conveying chain arrangement number is7,the membrane complex isolation rate is 92.35%. |
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