Single machine arrangement and connection of powder coating production line

The conventional production line for powder coatings consists of four single machines and their conveying devices
.
These single machines are arranged in a certain arrangement to form a complete production line
.

When the single machines of the same specification production line form a production line, there will be different arrangements and different connection and conveying devices

Although the arrangement and connection of the equipment of each milling manufacturer are different and different, the purpose is the same: maximize the performance of the equipment, ensure stable product quality, and strive for the lowest production cost
.
Specifically, the following principles should be followed:

(1) It is compatible with the overall layout of the factory area and meets the coordination between the production line and related functional areas
.

(2) It is in line with the production process of the coating, so that the transmission between the processes does not take detours or avoid overlapping
.

(3) It is beneficial to the operation, cleaning and maintenance of the equipment
.
   

(4) It is beneficial to realize automatic operation and reduce labor intensity
.
   

(5) It is beneficial to reduce the number of operators
.

By summarizing the single machine arrangement and connection methods that can be used in the coating production line, the equipment users can have a deeper understanding and understanding of it
.

For new manufacturers, the arrangement and connection plan should be determined simultaneously during plant design and equipment selection to achieve a one-step installation effect; for old manufacturers, the arrangement and connection plan can provide solutions for the shortcomings of old equipment.

1.

The mixer can be installed on the same layer as the extruder, tablet press and pulverizer, or it can be installed on the second layer (two-layer workbench) or the third layer alone
.
Depends on plant conditions and production line characteristics
.

Installed on the same layer, the mixed material is moved to the extruder, and the production cost is high; the installation of two layers and three layers can realize self-weight gravity discharge

2.

According to the direction of the feeding port of the mill and the door of the dust collector, the direction from the feeding port to the door of the dust collector is from right to left, which is called forward arrangement, otherwise it is reverse arrangement (see Figure 1 below).
)
.

The purpose of dividing the positional arrangement of the pulverizer components (pulverizer, separator, sieve, dust collector) into two types is to meet the equipment installation requirements when the space is small and the position of the air outlet is specific
.

According to the actual situation of the site and the requirements of the position of the outlet of the induced draft fan, choosing the forward or reverse arrangement can better meet the rationality of the layout of the entire production line and obtain a larger operating space

3.

The four parts of the pulverizer - pulverizer, separator, dust collector, and induced draft fan are arranged in a square, which is referred to as the four-side arrangement of the pulverizer
.
Its characteristic is that the parts that generate noise are separated from the parts that generate dust, and measures can be taken separately to eliminate dust and reduce noise (see Figure 2)
.

4.

For the arrangement of multiple production lines and parallel arrangements, the channel selection of the production line is particularly important
.
It is directly related to the smoothness of material transfer and the convenience of operation
.

The position of the channel can be set between the tablet press and the pulverizer, or between the separator and the dust collector of the pulverizer, depending on the feeding method between the tablet press and the pulverizer
.

When the tablet transfer from tableting to grinding adopts the grinding suction type or the tablet straight-in type, the channel is usually located between the separator and the dust collector; when other materials are transferred, the channel is generally located between the tablet press and the powder mill.
between machines (see Figure 3)
.

5.
Parallel arrangement of production lines

When multiple production lines are centrally arranged, consideration should be given to adopting large-span, high-storey workshops (30m/6m) in parallel arrangement (see Figure 4)
.
Its advantages are: suitable for mass production requirements, easy to achieve automation; small footprint; manpower saving
.

6.
One layer arrangement of the production line

Four stand-alone machines are installed on the same floor, arranged in line or T-shaped according to the process flow (see Figure 5)
.
It is suitable for the production mode of small production line and small number of lines
.

7.
Double layer arrangement of production line

The mixer is installed on the second floor or a specific area on the first floor, and the other three stand-alone machines are installed on the first floor (see Figure 6)
.
This arrangement is suitable for high-volume, multi-line production
.

8.
Three-layer arrangement of the production line

The mixer was installed on the third floor, the extruder was installed on the second floor, and the pulverizer was installed on the first floor (see Figure 7)
.
This arrangement is suitable for large output and mass production mode, and has the characteristics of smooth and reasonable feeding between single machines and good independence of the three processes
.

9.
Feeding method from mixer to extruder

There are four modes of material transfer between the mixer and the extruder: manual material transfer, screw/pneumatic material transfer, fixed hopper discharge, and mobile hopper discharge
.

a.
Manual moving (see Figure 8)

Features: manual material moving, lifting, feeding, high labor intensity
.

b.
Screw/pneumatic moving (see Figure 9)

Features: save manpower; difficult to clean, suitable for single-variety production
.

c.
Fixed hopper discharging (see Figure 10)

Features: It is suitable for the mixer to be located on the second floor, which saves people and effort
.

d.
Move the hopper to discharge (see Figure 11)

Features: suitable for two-layer discharge 
.

10.
Feeding method from tableting to grinding

There are six modes of tablet transfer between tablet press and pulverizer: manual hopper shoveling, manual hopper feeding, hydraulic hopper feeding, automatic grinding and suction feeding, forklift hopper feeding, and tablet direct feeding
.

a.
Manual hopper shoveling (see Figure 12)

Features: Manual cart, manual shoveling to the mill hopper; high labor intensity, suitable for small production lines
.

b.
Manual hopper discharge (see Figure 13)

Features: Manual cart, pull open the insert plate to discharge; low labor intensity, suitable for large production lines
.

c.
Hydraulic hopper discharging (see Figure 14)

Features: Manual cart, foot-operated hydraulic lifting hopper, open the insert plate to discharge; low labor intensity, suitable for large production lines
.

d.
Forklift hopper discharge (see Figure 15)

Features: mechanical transfer, pull open the plug board to discharge; low labor intensity, suitable for large production lines with large operating space
.

e.
Grinding suction automatic feeding (see Figure 16)

Features: Automatically complete the tablet transfer from tableting to grinding; it has an impact on output and saves manpower
.

f.
The tablet is directly fed (see Figure 17)

Features: The tablet falls straight into the hopper of the pulverizer, saving manpower; the tablet press has a high operating height and needs to increase the pad frame
.