Classification of coating equipment
Small capacity coating equipment :
Paint dispersers, cylinder pullers, grinders, fillers, paint tinting machines selected according to customer’s opinions, etc.
Simple paint production equipment is a single-machine paint equipment. It can produce various paints by implementing production step by step according to the paint production process .
Large-capacity coating equipment :
The complete sets of equipment from annual output of 500t to annual output of 50,000t are all single-machine equipment combinations or fully automated production lines, including feeding system, metering system, dispersion and grinding system, multi-functional stirring and paint mixing system, cleaning system, etc., automatic control system, etc. and automatic filling system, which can be tailored according to different coating varieties and production requirements.
Complete sets of paint equipment are generally integrated paint production equipment, which include vacuum feeding system, electronic control system, automatic filling, automatic weighing and other systems.
6 type of paint coating manufacturing complete equipment machine
The paint production line mainly consists of a conveying system, electrical and control systems, mixing equipment, grinding equipment, filtering equipment, paint filling equipment, and a discharge filtering system.
Part 1. Conveying system
- 1. Raw material measurement
The measurement of raw materials and finished products requires the use of electronic scales or weighing scales. In addition, in advanced large and medium-sized coating factories, water and liquid materials are measured by flow meters and other instruments during pipeline transportation.
- 2. Powder conveying
There are powder pneumatic conveying (positive pressure, negative pressure, dense phase, dilute phase) and mechanical conveying (screw, belt, bucket elevator, etc.) .
There are many types of batching systems for powders and liquids, including incremental method, decremental method, volumetric method, etc.
Small batch powder feeding system
A Small Batch Powder Feeding System is designed to accurately and efficiently dispense precise amounts of powdered materials in limited quantities. These systems are essential in industries such as pharmaceuticals, food processing, cosmetics, and electronics, where controlled dosing and minimal waste are critical.
Big batch powder feeding system
- 3. Liquid delivery
For medium and small production lines, raw materials are generally transported by carts, and rail-mounted lifting cranes are used for transportation in the up and down directions. For large-scale factories with conditions, pipeline transportation is used for liquid raw materials with large feeding quantities, such as water, emulsion, thickener HEC pre-solution and pigment slurry. The power is a delivery pump. In addition to water and low-viscosity additives, the delivery pump can use a diaphragm pump: if there is no air source, an electric diaphragm pump is used; if there is an air source, a pneumatic diaphragm pump or an electric diaphragm pump can be selected at will. For pre-solutions such as pigment slurry and thickener, gear pumps and thick slurry pumps can also be selected.
- 4. Electrical and control systems
Large paint factories will use programmable controllers (PLCs) equipped with control boxes (explosion-proof and non-explosion-proof), MCC cabinets, and PLC cabinets to facilitate on-site operations.
Z-MIXER’s industrial computers and touch screens mainly use internationally renowned brands as the system’s host computers to ensure the reliability of the control system. Engineers can go to the customer’s factory for debugging and installation.
Part 2. Dispersing and mixing system
Paint dissolver: According to the different processes and material characteristics (viscosity, density, etc.) of the paint, there are various forms and specifications of mixers to choose from, including vacuum, explosion-proof, single-shaft, double-shaft, triple-shaft, kettle-type, planetary mixers for high-viscosity paints, horizontal ribbon mixers for putty and real stone paint, etc.
Paint Mixing tank: a mixing device for preparing pigment slurry. In the mixing tank, the pigment and filler are fully wetted by water with the help of additives and become a slurry suitable for dispersion. This equipment needs to be equipped with a stirrer. The best stirring form is a dispersion disk type with low, medium, high or stepless speed. The stirring speed is generally 300~20000r/min.
Equipment with a volume of more than 1000L should be fixed and installed, which is safer; equipment with a volume of less than 1000L can be made into a movable tank, that is, rollers are installed at the bottom of the tank, which can be moved manually and is more flexible .
1. Dispersed equipment
Disperser: In the pre-dispersion of coatings and pulping equipment of latex paints, there are various types and specifications of dispersers to choose from, including dispersers with scraping walls, vacuum dispersers, butterfly-type twin-shaft dispersers, platform dispersers, etc., to meet the requirements of various dispersing and mixing conditions.
2. Paint mixing equipment
The work of mixing pigment slurry with emulsion and additives and adding color paste for color matching is completed in the paint mixing tank. The size of the paint mixing tank is similar to that of the mixing tank, and the stirring device configured is also similar, but the volume should be larger than that of the mixing tank. Sometimes, the paint regulator tank and the mixing tank are used as the same equipment, such as when using a high-speed dispersion process.
Part 3. Grinding equipment
Basket grinder: This wet grinding equipment combines the original dispersion and sand grinding processes into one, reducing the process flow, eliminating the need for pumps and valves, improving production efficiency, reducing material waste, and facilitating cleaning. It is suitable for grinding a variety of products, especially for the production of small batches of multiple colors.
Horizontal sand mill: used for wet grinding of coatings with higher fineness requirements. It has good grinding fineness and high efficiency. It is the most widely used grinding product on the market, including disc-type horizontal sand mill and all-purpose horizontal sand mill.
Part 4. Filtration equipment
After the paint is prepared, it should be filtered before packaging. The filtering equipment includes open vibrating screen, bag filter or closed pressurized bag filter (pressurization can speed up the filtering speed). The filter screen is usually 80~150 mesh stainless steel or nylon silk filter cloth .
Part 5. Paint filling machine equipment
The packaging specifications are 0.5~200kg, suitable for filling plastic barrels and iron barrels, including semi-automatic and fully automatic forms, and can be customized according to requirements.
Part 6. Exhaust Filtration System
Select the appropriate model based on the coating production capacity and the amount of waste gas and dust emitted.
If the amount is small, you can choose a mobile pulse dust collector, which is easy to move and use for different equipment.
If you need a large capacity, you need to use a large machine without a dust collector. You can choose at least 24 bags .
Conclusion:
The article outlines the essential equipment needed for paint and coating manufacturing, emphasizing the importance of quality and efficiency. Z-MIXER, a reputable manufacturer, offers a range of mixing and grinding solutions tailored to various production needs. For state-of-the-art equipment and expert support, choose Z-MIXER for your manufacturing requirements.