Polystyrene pre-curing system

Abstract

The invention relates to a device for making EPS extruded boards, in particular to a polystyrene pre-curing system comprising a stock bin vibrating and screening device, a stirring tank, an automatic sprinkling device and a pre-curing bin. The bottom of a vibration rack of the stock bin vibrating and screening device is connected with an eccentric wheel; a screening frame comprises a conical screening net and an annular material receiving groove; the bottom face of the stirring tank is of a slope surface structure; a lifting auger is arranged on the middle portion in the tank; an arc-shaped discharging face is arranged on the top of the lifting auger; the automatic sprinkling device is arranged in the stirring tank; a protective screen is arranged on a discharging port of the stirring tank; the pre-curing bin comprises a buffering bin and a feeding bin; the buffering bin comprises a bottom plate, a protective screen and an observation window; the bottom plate of the buffering bin is provided with a breathable groove; and a gas dispersing cavity is formed below the bottom plate. By means of the device, impurity materials can be conveniently removed, the suspension time of polystyrene particles in the tank is prolonged, mixing is more uniform, flying of materials is effectively prevented, and expansion stress is buffered.

Description

[0001] The invention relates to a device for making EPS extruded boards, in particular to a polystyrene pre-curing system. Background technique [0002] The production of EPS extruded board is mainly made of polystyrene resin as raw material, supplemented by polymer and catalyst for mixing and foaming. Polystyrene resin is a transparent solid at room temperature. Partial adhesion may occur after long-term storage. It will affect the contact area with the catalyst, thereby affecting the foaming effect. At present, the main solution is to set up a screening device, and the material will first pass through the screening and then enter the silo. However, the prior art generally uses a vibrating flat screen, and the screening effect It is not good, and it is difficult to remove the remaining miscellaneous materials after screening. It needs to be manually shoveled out bit by bit, which not only wastes manpower and material resources, but also easily damages the screening device, and...

AI Technical Summary

Problems solved by technology

[0002] The production of EPS extruded board is mainly made of polystyrene resin as raw material, supplemented by polymer and catalyst for mixing and foaming. Polystyrene resin is a transparent solid at room temperature. Partial adhesion may occur after long-term storage. It will affect the contact area with the catalyst, thereby affecting the foaming effect. At present, the main solution is to set up a screening device, and the material will first pass through the screening and then enter the silo. However, the prior art generally uses a vibrating flat screen, and the screening effect It is not good, and it is difficult to remove the remaining miscellaneous materials after screening. It needs to be manually shoveled out bit by bit, which not only wastes manpower and material resources, but also easily damages the screening device, and the polystyrene mixing tank is usually the upper part. The material inlet is set, and the lower part is set with a material outlet. This setting makes the material fall to the bottom of the tank quickly due to the weight of the object, which is easy to cause uneven spraying, and the humidity is not easy to control, which is not conducive to the mixing and foaming of the material. And it will increase the time of spraying and stirring. In addition, because polystyrene becomes granular with very small density after mixing and foaming, it is very easy to fly after being released from the mixing tank, and has a large expansion stress. Usually, iron sheets are used. It is made into a closed warehouse to prevent the materials from flying, but it cannot buffer the expansion stress, the cost is high, the weight is heavy, and it is not easy to observe the situation of the materials in the warehouse

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