Hydraulic control system and extruder
By disconnecting the pilot oil supply circuit and the pressure relief circuit in the hydraulic control system, the problem of pilot oil circuit leakage in traditional extruders is solved, achieving energy-saving and environmentally friendly hydraulic control and improving the energy efficiency and product quality of the extruder.
CN122191152APending Publication Date: 2026-06-12FOSHAN HENGLITAI MACHINERY CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- FOSHAN HENGLITAI MACHINERY CO LTD
- Filing Date
- 2026-04-20
- Publication Date
- 2026-06-12
AI Technical Summary
Technical Problem
Traditional extruder hydraulic control systems suffer from pilot oil circuit leakage during pressure relief, leading to increased energy consumption and oil waste, which affects system energy efficiency and operating costs.
Method used
Design a hydraulic control system that, when the main oil circuit and the drain oil circuit are connected, disconnects the pilot oil supply circuit and the pilot pressure relief circuit of the pilot control valve, physically cutting off the connection of the pilot oil circuit and eliminating leakage.
Benefits of technology
It effectively solved the pilot oil leakage problem, reduced oil consumption and energy consumption, improved the control accuracy of load movement and product precision, and reduced operating costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122191152A_ABST
Abstract
The application discloses a hydraulic control system and an extruder, and relates to the technical field of hydraulic control systems, which comprises a cartridge valve and a pilot control valve. A main oil path and a discharge oil path are connected to the cartridge valve. After the cartridge valve is opened, the main oil path and the discharge oil path are in communication to realize the discharge of the main oil path. The pilot control valve is provided with a supply oil port, a discharge oil port and a control oil port. The control oil port is connected to and in communication with the control cavity of the cartridge valve. The supply oil port is connected with a pilot supply oil path, and the discharge oil port is connected with a pilot pressure relief oil path. The pilot control valve controls the on-off of the main oil path and the discharge oil path of the cartridge valve. When the main oil path and the discharge oil path are in communication, the pilot supply oil path and the pilot pressure relief oil path of the pilot control valve are disconnected. The application at least solves the problems of energy consumption increase and oil waste mentioned in the background.
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