Preparation production line of environment-friendly fireproof waterborne coating

Abstract

The invention relates to a preparation production line of an environment-friendly fireproof waterborne coating. The preparation production line comprises two sand mills, a sanding feeding pipe, a sieving machine, a sieved material collecting box, a sanded material returning pipe, a sanded material returning pump, a sieving feeding pipe, a sieving feeding pump, a kneading machine, a kneaded material collecting box, a kneaded material feeding pipe and a mixing device. The sieving machine is arranged on one side of the sand mills and is connected to the two sand mills through the sanding feedingpipe; the sieved material collecting box is connected to one sand mill through the sanded material returning pipe; the sanded material returning pump is arranged on the sanded material returning pipe;the kneading machine is connected to the kneading machine through the sieving feeding pump; the sieving feeding pump is arranged on the sieving feeding pipe; the top of the kneaded material collecting box is connected to a kneading discharge port; and the mixing device is connected to the kneading machine through the kneaded material feeding box. By structurally designing equipment, part of assemblies of the equipment can be detached and cleaned, so that the production efficiency of the whole production line is high. The produced waterborne coating is good in performance.

Description

technical field [0001] The invention relates to the field of preparation of water-based paints, in particular to a production line for the preparation of environment-friendly fireproof water-based paints. Background technique [0002] Water-based coatings are coatings that use water as a solvent or as a dispersion medium. According to the type of binder in the coating, water-based coatings are divided into natural water-based coatings of natural substances or minerals and petrochemical water-based coatings of artificial synthetic resins. Water-based paint is a relatively new type of paint in the paint market. Compared with solvent-based paints, water-based paints have the following characteristics: 1. Water-based paints use water as a solvent, saving a lot of resources; water-based paints eliminate fire hazards during construction; Air pollution is small. 2. Water-based coatings can be directly coated on wet surfaces and in humid environments. They have good adaptability to...

AI Technical Summary

Problems solved by technology

[0004] In the preparation equipment required in the existing technology, there are multiple technical defects in many equipments, and its deficiency is as follows: (1) the sanding disc of the sand mill is directly fixedly connected with the sanding shaft, and the number of the sanding discs and the distance between the sanding discs The distance between them cannot be adjusted, the sanding disc cannot be replaced, and at the same time, the sanding disc cannot be adjusted to achieve the control of less touch accuracy; (2) The circulation of the raw materials in the sand mill is poor, and only the rotation of the sanding disc drives the sand mill. Rotation, friction, and sanding of raw materials, the efficiency is low, the degree of disturbance to the raw materials in the sand mill is low, the sanding efficiency is low, the precision of sanding is low, and the output particle size is large

(3) The fineness of the existing sieving machine is low, which cannot meet the requirements of the sieving fineness of water-based paint raw materials; at the same time, after the sieving machine is used for a long time, the powder is easy to condense in the screen, resulting in screen blockage, The pore size of the screen becomes smaller, dust accumulates and pollutes the screen, etc. The screen cannot be cleaned or replaced, resulting in low screening efficiency and affecting screening performance.

(4) When the existing kneader is in operation, all the raw materials of each component are directly added into the kneader. Before the raw materials are kneaded, there is no pretreatment device for the raw materials, and only two paddles in the kneader are used for slow differential kneading. The processing efficiency of raw materials is low and the kneading rate is slow

The kneading paddle of the kneader has a single form, the pressing pressure between the two paddles is small, and the degree of compactness of kneading between the raw materials is low

(5) The existing mixing tool for raw material mixing realizes the mixing of raw materials through the rotation of the stirring blades. During the process of stirring the paddles, the raw materials in the mixing tank are driven to form a swirling flow, but the raw materials are always in the movement of the horizontal plane , the raw materials in the mixing tank are dispersed into the outer ring of the mixing tank, the degree of turbulence of the raw materials in the tank is low, the circulation between the upper layer raw materials and the lower layer raw materials is slow, the uniformity of stirring and mixing is low, and there is insufficient stirring , uneven phenomenon, affecting the performance of water-based coatings

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