关键词: 残膜回收, 膜杂分离, 集膜装置, 气吸式

Abstract: Aiming at the problem that the residual film recovered by the residual film recovery machine has high impurity content and is difficult to use, based on the principle of air separation, a film collection device with both film impurity separation and residual film collection functions is improved and designed. By analyzing the motion law of residual film and impurities, the relationship between the material characteristics and the material motion trajectory is clarified. The field test was carried out with centrifugal fan speed, distance from diaphragm to film inlet and diaphragm height as test factors and impurity content as test index. The results showed that the influence of each factor on impurity content from large to small was as follows: distance from diaphragm to film inlet, centrifugal fan speed and diaphragm height. Using the response surface diagram of DesignExpert software, the comprehensive effect analysis was carried out, and the results showed that the centrifugal fan speed was 1 974 r/min, the partition distance was 767 mm, and the partition height was 723 mm. Under these parameters, the impurity content was 6.97%. The research results can provide a basis for the research and development of residual film recovery equipment.

Key words: residual film recovery, film impurity separation, film collecting device, air suction