Melt Filtration Systems
Hydraulic Power Unit
Introduction
The Hydraulic Power Unit is a dedicated hydraulic drive system designed for melt filtration systems and screen changers in polymer processing lines. It provides stable hydraulic power for quick screen changers, continuous screen changers, and back-flush screen changers, ensuring fast switching, reliable operation, and continuous production.
Overview
The hydraulic power unit mainly consists of hydraulic power components, pressure control system, accumulator system, and intelligent monitoring system.
According to different operating requirements, the system can be configured as accumulator hydraulic stations or electromagnetic hydraulic stations.
The accumulator hydraulic station provides high flow output and rapid pressure release, making it suitable for applications requiring high switching speed and strong driving force. The electromagnetic hydraulic station features compact design, stable movement, fast pressure build-up, and precise stroke control.
The integrated control system monitors melt pressure, temperature, heating current, and hydraulic operating conditions in real time. Automatic alarm functions help operators identify abnormal conditions and perform timely maintenance.

Key Features
- High hydraulic output power
- Fast pressure response and stable operation
- Suitable for various screen changer systems
- Real-time pressure and temperature monitoring
- Automatic alarm and safety protection
- Modular design for easy maintenance
- Customized hydraulic and electrical solutions available
Technical Specifications
| Model | Motor Power(kW) | Flow Rate(L/min) | Oil Tank Capacity(L) | Hydraulic Pressure(MPa) |
|---|---|---|---|---|
| DHY-40 | 2.2 / 3 | 8.5 | 45 | ≤30 |
| DHY-110 | 5.5 | 14.3 | 110 | ≤30 |
Optional Configurations
Hydraulic Station Type
- Accumulator Hydraulic StationHigh flow output, rapid pressure release, suitable for high-speed switching applications.
- Electromagnetic Hydraulic StationCompact structure, stable movement, precise control, suitable for continuous operation.
Control System Options
- PLC Control Cabinet
- HMI Touch Screen Interface
- Automatic Pressure Monitoring
- Temperature Monitoring
- Alarm System
- Explosion-Proof Control Cabinet
Key Technologies
- High-Efficiency Hydraulic Power Unit Design
The hydraulic system is optimized to provide sufficient driving force for various types of screen changers. The accumulator design enables rapid pressure release and shortens the screen replacement cycle. - Stable Pressure Control Technology
Advanced hydraulic pressure regulation technology ensures stable pressure output during operation, reducing pressure fluctuation and improving equipment reliability. - Intelligent Monitoring and Alarm System
The control system continuously monitors melt pressure, temperature, heating current, and operating status. Automatic alarms provide timely warnings for abnormal conditions. - Multi-Device Hydraulic Drive Capability
One hydraulic power unit can supply power to multiple screen changer units, reducing system cost and simplifying production line integration. - Customized Control Solutions
The hydraulic system can be customized according to customer requirements, including PLC control cabinets, HMI interfaces, and explosion-proof electrical systems.
Note
The hydraulic power unit should be selected according to:
- Screen changer type
- Required switching speed
- Hydraulic pressure requirement
- Number of driven units
- Production line capacity
Applications
The Hydraulic Power Unit is widely used for polymer extrusion production lines equipped with melt filtration systems.
Typical applications include:
- Back-flush continuous screen changers
- Plate type quick screen changers
- Continuous screen changers
- Single piston screen changers
- Double piston screen changers
Interested in This Product?
If you’re interested in this product or have a specific application in mind, feel free to contact us. Share your material, process requirements, production capacity, and application details, and our team will recommend the most suitable configuration and technical solution to meet your production needs.
Our engineering team will recommend the most suitable solution.













