★ Structure and working principles:
Structure:
The machine consists of a vacuum-covered pressurized dehydration section and a vacuum high-pressure rolling dehydration section. The machine is composed of feeding hopper, rubber belt, vacuum box, covering pressurizing device, vacuum high rolling device, drive & driven rollers, filter cloth, filter cloth deviation correction device, filter cloth cleaning device, frame and other components. It uses filter cloth as the filter medium to make full use of vacuum suction and press dehydration to achieve solid-liquid separation.
★ Working principle:
The annular rubber belt driven by a reducing motor run continuously on the vacuum box, the filter cloth which laid on the rubber belt run with the rubber belt synchronously. The slurry is evenly distributed on the filter cloth by the feeding hopper. When the vacuum box is connected to the vacuum system, vacuum area formed on the rubber belt, the filtrate penetrates the filter cloth and is collected by the transverse grooves on the rubber belt and flows into the vacuum box through the holes in the center of the rubber belt, while the solid part is intercepted and forms cake on filter cloth. The filter cake moves forward with the filter cloth and enters the pressurized area covered by the crawler belt. Under the pressure of several groups of pressure rollers, water is removed from the cake and then vacuumed to the filtrate tank for discharging, and then the cake wrapped up by upper and lower filter cloth enters vacuum & high pressure deep dehydration section, and continues to be dehydrated under the triple action of several sets of vacuum press rollers and coupled rollers and vacuum suction to remove the moisture from the cake. Finally, the cake is discharged by the upper and lower filter cloth discharge devices, then the filter cloth renewed after passing through cleaning device, and then passes through support rollers, redirection rollers, corrective device and re-enters the next cycle.
★ Model and parameters (standard model)
Example: DZG20（8）-15/2000
● D- Crawler cover & pressurization
● Z- Vacuum
● G- High pressure
● 10- filtration area 10㎡
●（8）-cover & pressurization area 8㎡
● 15- vacuum squeezing area 15㎡
● 2000- valid width 2m
| Model | Host power（KW） | Frame length（mm） | Frame width（mm） | Frame height（mm） | Weight（T） | Vacuum consumption（ m³/min） |
| GDZ5（4）-5/1000 | 5.5+11 | 13000 | 1600 | 2200 | 18 | 25 |
| GDZ7.5（4）-5/1000 | 5.5+11 | 15500 | 20 | 32 | ||
| GDZ10（4）-5/1000 | 5.5+11 | 18000 | 22 | 40 | ||
| GDZ7.5（6）-10/1500 | 7.5+15 | 13000 | 2100 | 2400 | 25 | 45 |
| GDZ11.25（6）-10/1500 | 7.5+15 | 15500 | 2100 | 2400 | 30 | 55 |
| GDZ15（6）-10/1500 | 7.5+15 | 18000 | 2100 | 2400 | 35 | 65 |
| GDZ10（8）-15/2000 | 11+22 | 14000 | 2100 | 2600 | 30 | 65 |
| GDZ15（8）-15/2000 | 11+22 | 16500 | 2700 | 2600 | 35 | 75 |
| GDZ20（8）-15/2000 | 11+22 | 19000 | 2700 | 2600 | 40 | 85 |
| GDZ12.5（10）-20/2500 | 15+30 | 14000 | 3200 | 3000 | 45 | 80 |
| GDZ18.75（10）-20/2500 | 15+30 | 15500 | 50 | 100 | ||
| GDZ25（10）-20/2500 | 15+30 | 19500 | 55 | 110 | ||
| GDZ15（12）--25/3000 | 18.5+30 | 14500 | 3700 | 3400 | 50 | 100 |
| GDZ22.5（12）--25/3000 | 18.5+30 | 17000 | 55 | 120 | ||
| GDZ30（12）--25/3000 | 18.5+30 | 19500 | 60 | 130 | ||
| GDZ20（16）-30/4000 | 22+45 | 15000 | 4800 | 3800 | 70 | 125 |
| GDZ30（16）-30/4000 | 22+45 | 17500 | 75 | 150 | ||
| GDZ40（18）-30/4000 | 22+45 | 20000 | 85 | 175 |
★ Technical features
High degree of automation, it can continuously complete the functions of feeding, vacuum dewatering, pressurization, rolling, filter cloth washing, etc., with extremely high production efficiency.
Combining vacuum belt filter, belt press filter and press filter (it can be called a continuous plate and frame filter press) three in one, maximum to remove water.
Reasonable structure, low equipment failure rate, easy to maintain.
★ Application
industrial solid waste, mine tailings, gypsum (phosphogypsum, citric acid gypsum, titanium gypsum, desulfurization gypsum), sludge, corncob, platycodon, traditional Chinese medicine slag, prolifera and other dehydration.
