ZPG Series Vacuum Harrow Dryer

Working principle

This machine is a novel horizontal intermittent vacuum drying equipment. Wet materials are evaporated through conduction, and a scraper stirrer is equipped to continuously remove the materials on the hot surface. The material is then pushed inside the container to form a circulating flow. After the water evaporates, it is pumped out by a vacuum pump.

Performance characteristics

This machine adopts a large area sandwich heating method, with a large heat transfer surface and high thermal efficiency.

This machine is equipped with stirring to form a continuous circulation of materials in the cylinder, further improving the uniformity of material heating.

This machine is equipped with stirring to smoothly dry slurry, paste, and paste materials.

Adapt to materials

The pharmaceutical, food, chemical and other industries carry out the following material drying:

Suitable for paste, paste, and powder materials;

Heat sensitive materials that require low-temperature drying;

Materials that are easily oxidized, explosive, highly irritating, and highly toxic;

Require the recovery of organic solvent materials.

Structural diagram

Technical specifications

project	model
name	unit	ZPG-500	ZPG-750	ZPG-1000	ZPG-1500	ZPG-2000	ZPG-3000
working volume	L	300	450	600	900	1200	1800
heating area	m2	6	7.6	9.3	12.3	14.6	19.3
stirring speed	rpm	6-30 stepless speed regulation
power	kw	4	5.5	5.5	7.5	11	15
Design pressure of interlayer (hot water)	Mpa	≤0.3
Vacuum degree inside the cylinder	Mpa	-0.09～0.096

Note: The amount of water evaporation is related to the characteristics of the material and the temperature of the thermal inlet and outlet. When the outlet temperature is 90oC, the water evaporation curve is shown in the above figure (for selection reference). As the product is constantly updated, relevant parameters are subject to change without prior notice.