Novel three-section nickel-based screw-grinding waste plastic modification regeneration energy-saving equipment

Abstract

Novel three-section nickel-based screw-grinding waste plastic modification regeneration energy-saving equipment relates to the technical field of plastic machinery and is mainly composed of two parts, namely a working part and a base support. The main body of the working part is a heating fusion tube, inside which three sections of grinding mechanisms are arranged. A filament extrusion mechanism is connected to the right end of the heating fusion tube. A cooling device is disposed at the lower end of the filament extrusion mechanism. The base support part mainly comprises a pedestal and an engine and a speed change gear box which are arranged on the pedestal. The engine is connected with the speed change gear box through a transmission shaft. The speed change gear box is connected with the heating fusion tube. The three sections of grinding mechanisms contain a charging barrel and a screw arranged in the charging barrel. Thread of the screw is provided with a trough of 12mm width and 1.5mm depth. A nickel-based ceramic alloy powder is sprayed in the trough. By a three-section twin-exhaust grinding technology, a waste plastic raw material is fully heated and ground. Grinding fineness of waste plastic reaches 40-60 nanometers or molecular state; first pass yield reaches 98%; and energy consumption is saved by more than 46%.

Description

technical field [0001] The invention relates to the technical field of plastic machinery, in particular to a new type three-stage nickel-based screw grinding waste plastic modified regeneration energy-saving equipment, which is mainly used in the waste plastic regeneration industry, and the silk is widely used in automobile, construction, military, life and other fields. Applications. Background technique [0002] Since the formation of the modern plastics industry in 1930, after more than 80 years of rapid development, the plastics industry has become the mainstay of light industry. While the wide application of plastic products has also produced huge plastic pollution, it has caused great damage to the global ecological environment. The main treatment methods for waste plastics are landfill and incineration. However, because landfill occupies a large space, it increases the pressure on land resources. At the same time, because waste plastic is difficult to degrade, it ser...

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Problems solved by technology

In the existing domestic market, there are many recycled and modified granulation machines for waste plastics, but most of them have insufficient ball milling fineness when modifying waste plastics in the regeneration stage, poor physical and chemical properties of recycled modified plastics, easy damage to equipment, and poor performance. Defects such as stability, have the following defects:

[0004] 1) The structure of the traditional equipment is direct feeding and grinding. Due to the influence of the depth of the grinding section, the material can not be kept uniform, and the finished product cannot meet the required quality requirements.

[0005] 2) Since the waste plastic needs to go through the crushing and cleaning process before grinding, the cleaned plastic sheet contains a lot of water, and the water-containing plastic needs to be dehydrated to carry out the normal reinforcement modification procedure, otherwise, the modification will be reduced. The physical and chemical properties of the plastic material, thus affecting the quality and performance of the plastic products made

The disadvantage is that the dryer consumes a lot of energy, and at the same time, adding a link in the production process of waste plastic modification, the energy consumption is more serious, which increases the production cost; while drying requires a lot of human resources, the work efficiency is low and waste of labor resources

[0006] 3) The diameter of the transmission screw is 159mm, the temperature changes rapidly and is unstable, resulting in unstable product quality

[0007] 4) In the prior art, the transmission mechanism used for the screw transmission device is mostly a belt transmission mode. When the transmission mechanism is working, the vibration is relatively strong, which will drive the screw to vibrate, lose part of the mechanical energy, and affect the internal grinding quality of the screw.

The slipping phenomenon in the belt transmission is also unavoidable, which limits the production efficiency of the modified material, and the noise generated by the belt transmission is large, causing noise pollution

[0008] 5) Due to the great wear and tear of the screw during use, especially the screw of waste plastic recycling equipment, it is difficult to use it after 1-2 months of use, and it needs to be replaced, and the cost is high

[0009] 6) In terms of the gap between the barrel and the screw of the waste plastic modification equipment, the gap between the existing domestic similar products is generally about 80 wires. At the same time, due to the poor surface treatment technology of the screw, the screw is prone to expansion, and the screw thread and the barrel Contact friction occurs on the inner wall, which eventually causes the equipment to fail to operate normally

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