Common knowledge of coating: introduction of common production equipment in Building Coating Factory

Core tip: the production equipment of general building coating factory includes dispersion equipment (including dispersion and grinding equipment), conveying equipment, blending equipment and auxiliary equipment, etc Dispersion equipment includes high-speed mixer, sand mill, colloid mill, three roller mill, etc The conveying equipment is mainly gear pump, which is used to transport materials into and out of the sand mill and blending equipment Because the architectural coating contains a large number of physical pigments with high viscosity, which will produce a large radial force in the transportation, and the wear is easy to aggravate, so the internal circular gear pump should be selected The blending equipment is the last to disperse the pigment slurry in the base material to make the coating Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Coating home news: the production equipment of general building coating factory includes dispersion equipment (including dispersion and grinding equipment), conveying equipment, blending equipment and auxiliary equipment, etc Dispersion equipment includes high-speed mixer, sand mill, colloid mill, three roller mill, etc The conveying equipment is mainly gear pump, which is used to transport materials into and out of the sand mill and blending equipment Because the architectural coating contains a large number of physical pigments with high viscosity, which will produce a large radial force in the transportation, and the wear is easy to aggravate, so the internal circular gear pump should be selected The blending equipment is the equipment used in the final operation of dispersing the pigment slurry in the base material to make the coating The structure of the mixing equipment is relatively simple, which is mainly composed of two parts: various mixing devices and cylindrical mixing tanks Therefore, the container with mixing can be used as mixing equipment There are many types of agitator blades, such as paddle type, propulsion type, frame type and turbine type The mixing tank of the mixing equipment has two forms of fixed and flowing according to its volume and production batch size, the latter is commonly known as pull tank The auxiliary equipment is kneader, mortar mixer, scale, pusher, crane, boiler, etc Building paint factory does not have to have all the above equipment, most of which only need a part of equipment, in which high-speed mixer is essential; if all the ultra-fine pigments and fillers are used, grinding equipment is not required As a coating factory, it is better to have the equipment with three procedures of pulping and grinding machine to prepare coating, so as to meet the requirements of different grades of coating production With the rapid development of architectural coatings in our country, the production equipment is also constantly innovated, with considerable progress, some new products or new supporting equipment have been launched For example, a complete set of integrated coating equipment, a complete set of technological processes such as grinding, dispersion, vacuum suction, vacuum defoaming and semi-automatic filling are completed in one process from feeding to finished products; a new basket type grinding system, a new type of double shaft high-speed mixer and double shaft double speed mixer have been invented, which has reformed the production process and greatly improved the production efficiency Function principle and advantages of high-speed mixer: high-speed mixer is the simplest one in the dispersion equipment Its main function is to pre disperse the pigment, and then cooperate with the grinder to disperse the pigment The high-speed mixer is formed by the high-speed rotation of the special impeller (see Figure 1-1) of the disc saw tooth in the material In this region, the pigment particles are strongly sheared and impacted, which makes them disperse into the paint paste quickly But at this time, there is no high pressure, the pigment particles can not get a good depolymerization Outside this area, a laminar flow is formed, which is divided into upper and lower flow bundles, so that the paint slurry can be fully recycled, turned and mixed evenly The advantages of high-speed mixer are simple structure, easy operation, maintenance and maintenance; flexible use, mixing, dispersion and blending process; convenient cleaning and high production efficiency, which is one of the main production equipment used in the construction paint factory (see Figure 1-2) Function principle and advantages of sand mill: the function of the grinder is to further grind and disperse the pre dispersed slurry to achieve the specified fineness It is composed of a vertical sand cylinder, a mixing shaft and a paint slurry conveying system 8-10 dispersing discs are uniformly arranged on the mixing shaft to play the role of grading and dispersing The cylinder is generally filled with a proper amount of glass beads and other dispersion media When the material is fed into the cylinder at the bottom and the mixing shaft drives the dispersion disk to move at a high speed, the mixture of the paint slurry and the dispersion medium rotates between the two dispersion disks for high-speed moistening The pigment particles are sheared by the high-speed movement dispersion medium here Because the rotation speed of the dispersion disk is quite high, the centrifugal force generated can reach 100 times of the gravity, so the pigment The particles are distributed in different stages between the disks The advantages of sanding mill are low labor intensity, no need for too much care during operation; convenient for continuous operation, the technical requirements for operation are not as high as that of three roller mill; the maintenance requirements are not as high as that of three roller mill; high production efficiency, especially for easily dispersed pigments The disadvantage is that it is not suitable for processing the pigment which is difficult to disperse, it is difficult to change the color, and it is only suitable for the slurry with low viscosity Grinding machine is divided into ordinary open type, vertical closed type, horizontal closed type, etc The general building coating factory mostly uses the ordinary open type The solvent type coating shall be of the enclosed grinder Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,