Fiberboard sanding dust recycling machine capable of automatically separating sand grains and recycling method

Abstract

The invention discloses a fiberboard sanding dust recycling machine capable of automatically separating sand grains. The fiberboard sanding dust recycling machine comprises multiple dust collection heads, a bag type dust collector, a dust collection fan, a cyclone separator, a feeding fan and a dust cabin, wherein an inlet of the bag type dust collector is connected with the multiple dust collection heads through air suction pipes; the dust collection fan is arranged at the tail end of main air suction pipes; an air inlet of the cyclone separator is connected with a material outlet of the bag type dust collector through a dust conveying pipe; the feeding fan is arranged at the starting end of the dust conveying pipe; the dust cabin is used for receiving sanding dust recycled from the cyclone separator; a section of L-shaped settling pipe is arranged at the middle section of the dust conveying pipe, two ends of the settling pipe are communicated with the dust conveying pipe, the diameter of the settling pipe is greater than the diameter of the dust conveying pipe, and a sand grain collecting groove is formed in the lower end of the settling pipe. According to the fiberboard sanding dust recycling machine disclosed by the invention, sand grains falling from a sanding belt can be effectively separated from the sanding dust, and the disadvantages that the sanding quality of a fiberboard is influence and the service life of the sanding belt is shortened because the sand grains are mixed in the sanding dust can be overcome.

Description

technical field [0001] The invention relates to the field of fiberboard sanding dust recycling, in particular to a fiberboard sanding dust recycling machine and a recycling method for automatically separating sand particles. Background technique [0002] Surface sanding is the last process in the fiberboard production process. According to calculations, after the fiberboard is sanded, the amount of dust generated accounts for about 3-4% of the fiberboard product volume. As the world's largest producer of fiberboard, my country produces an astonishing amount of sanding dust every year. Regarding the treatment of fiberboard sanding dust, most of the fiberboard manufacturers in my country use dust collection equipment to recover the dust for the sake of saving resources, and then mix it with fibers as additional raw materials in proportion to re-use it for pressing fiberboard. The recycling of sanding dust can not only reduce the waste of resources and reduce production costs...

AI Technical Summary

Problems solved by technology

When sanding the fiberboard containing sand grains, the sand grains contained in the fiberboard will bring two major hazards to the sanding process: one is that the sanding effect of the board surface is rough due to the blocking of the sand grains on the sanding process, which makes the product The quality is reduced; the second is that due to the gnawing effect of the sand on the sand belt, the sand belt is abnormally desanded, which greatly reduces the life of the sand belt. Because the sand belt is expensive, the cost of sanding is greatly increased

What's more serious is that the abnormally shed sand particles return to the raw material warehouse through the vacuum equipment, and then enter the fiberboard, so repeated to form a vicious circle

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