Hydraulic oil tank, hydraulic system and engineering machinery

• Main Authors: WU RONGWEI, SHI GUOBAO, LIU XIAO
• Format: Patent
• Language: Chinese; English
• Published: 03.06.2022
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The utility model provides a hydraulic oil tank, a hydraulic system and engineering machinery, the hydraulic oil tank comprises a main cavity, a pilot cavity and an oil filter, the main cavity is provided with a main oil outlet and a main oil return port; a pilot oil outlet and a pilot oil return opening are formed in the pilot cavity; the main cavity communicates with the pilot cavity through the oil filter so as to provide hydraulic oil for the pilot cavity. The main oil outlet and the main oil return port are respectively communicated with the main oil way, and hydraulic oil can be provided and recycled for the main oil way through the main cavity; hydraulic oil with higher cleanliness can be provided for the pilot cavity through the main cavity and the oil liquid filter, then the pilot oil outlet and the pilot oil return port are communicated with the pilot oil way, the hydraulic oil with the higher cleanliness can be provided and recycled for the pilot oil way through the pilot cavity, the oil liquid cle