Method for recovering thin and light plastics from domestic garbage
A technology for domestic waste and light and thin plastics, applied in the field of waste plastic recycling, can solve the problems of wasting water resources, secondary pollution of water resources, and difficult to separate and clean garbage, and achieve the effect of saving labor and water resources
Inactive Publication Date: 2012-03-28
赖志华 +3
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Problems solved by technology
[0007] The current domestic waste treatment plant washes the separated light and thin plastics with water to cause secondary pollution of water resources. However, due to the large amount of light and thin plastics in domestic waste, a large water treatment system is required
Even if it is washed with water, it is difficult to separate the garbage in the plastic
The purity can only reach about 93%, and a large amount of water resources are wasted
Method used
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[0031] figure 1 , figure 2 The shown bag breaking machine includes a shield 1 installed on the frame, a main cutter head 2 and an auxiliary cutter head 3, the main cutter head 2 includes a cutter shaft 201 and a plurality of disc serrated knives 202 fixed on the cutter shaft 201, the cutter A plurality of disc serrated knives 202 on the shaft 201 are separated by a spacer ring 203; the auxiliary cutter head 3 includes a plurality of disc serrated knives 302 fixed on the cutter shaft 301, Spacer ring 303 separates between two disc serrated knives 302.
[0032] The cutter shaft 201 of the main cutter head 2 and the cutter shaft 301 of the auxiliary cutter head 3 are installed on the frame through bearings 4 respectively.
[0033] The serrated disc cutters 202 of the main cutter head 2 and the serrated disc cutters 302 of the auxiliary cutter head 3 are arranged alternately in the axial direction, and engage with each other in the radial direction.
[0034] The cutter shaft 2...
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The invention discloses a method for recovering thin and light plastics from domestic garbage. The method comprises the following steps: 101) the domestic garbage is delivered into a bag breaker, the bag breaker breaks plastic bags filled with the domestic garbage, and the broken plastic sheets are separated from the domestic garbage through air separation; 102) a crusher crushes the plastic sheets obtained from the step 101, sundries adhered to the plastic sheets are separated from the plastic sheets through colliding and kneading of the crusher, and the crushed plastic sheets are separated from the sundries again through air separation. Through breaking, crushing and twice air-separating, the thin and light plastics and the sundries in the domestic garbage can be separated effectively, the cleanliness of the thin and light plastics can be reach more than 94 percent, and the thin and light plastics can directly serve as main raw materials of wood / plastics composites. The method is not needed to be washed by water, so that not only is a great quantity of manpower saved, but also a large number of water resources can be saved.
Description
[technical field] [0001] The invention relates to recycling of waste plastics, in particular to a method for recycling light and thin plastics from domestic garbage. [Background technique] [0002] White pollution is an image term for the phenomenon of refractory plastic waste polluting the environment. It refers to the use of all kinds of domestic plastic products made of polystyrene, polypropylene, polyvinyl chloride and other polymer compounds and is discarded as solid waste. Due to random littering, it is difficult to degrade and deal with, resulting in serious environmental problems in urban and rural areas. phenomenon of pollution. [0003] The main sources of white pollution are food packaging, foam-filled packaging, fast food boxes, agricultural mulch and other light and thin plastics. [0004] my country is one of the top ten plastic products producing and consuming countries in the world, and white pollution is becoming more and more serious. However, everyone i...
Claims
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IPC IPC(8): B29B17/02
CPCY02W30/62
Inventor 吕惠仁
Owner 赖志华