一种电液比例多路阀
By optimizing the structure of the electro-hydraulic proportional multi-way valve, internal circulation of the liquid is achieved, solving the problem of insufficient pump flow, ensuring the stability and accuracy of hydraulic actuators at high kinetic energy output, and improving the operating efficiency and lifespan of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO BOLEV HYDRAULIC CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-17
AI Technical Summary
When a large flow rate is required by the existing multi-way valve, the pump body cannot meet the flow rate requirement in a short time, resulting in a long process of liquid filling the working chamber, which affects the high kinetic energy output of the hydraulic actuator.
An electro-hydraulic proportional multi-way valve is designed. Through structural optimization of the valve stem and flow channel, the internal circulation of liquid is realized, forming a "secondary utilization" of flow. It does not need to rely entirely on the large flow input of the pump body. Combined with the valve stem movement to control the connection between the flow channel and the chamber, it realizes precise proportional adjustment and coordinated control of multiple flow channels.
Under high energy demand, the hydraulic system has more stable flow and pressure, reduces energy loss, improves the smoothness of equipment operation and the accuracy of actuator movement, and extends the service life of the equipment.
Smart Images
Figure CN224515519U_ABST
Abstract
Claims
1. An electro-hydraulic proportional multi-way valve characterized by, The system includes a valve body assembly (1), which includes multiple valve body seats (2). Each valve body seat (2) has an adjustment cavity (21) and a sliding valve stem (3) within it. An input port (22) is located in the center of each valve body seat (2). A connecting hole (23) is opened on the upper side of the input port (22). Flow channels one (24) and two (25) are provided on both sides of the connecting hole (23). Flow channel 1 (24) and flow channel 2 (25) are connected to the input port (22) through the connecting hole (23). Flow channel 1 (24) and flow channel 2 (25) are symmetrically arranged about the input port (22). The valve body seat (2) is provided with an output chamber (28) and an input chamber (29) that connect the regulating chamber (21). The valve stem (3) moves to connect flow channel 1 (24) with the output chamber (28) and flow channel 2 (25) with the input chamber (29).
2. An electro-hydraulic proportional directional control valve according to claim 1, characterized in that: The output cavity (28) is located near the first flow channel (24), and the input cavity (29) is located near the second flow channel (25).
3. An electro-hydraulic proportional directional control valve according to claim 2, characterized in that: The valve stem (3) has a first protrusion (31) and a second protrusion (32). Both the first protrusion (31) and the second protrusion (32) are adapted to the regulating cavity (21), and the distance between the first protrusion (31) and the second protrusion (32) is greater than the wall thickness between the output cavity (28) and the flow channel (24).
4. An electro-hydraulic proportional directional control valve according to claim 3, characterized in that: The valve stem (3) has a third protrusion (33) and a fourth protrusion (34), both of which are adapted to the regulating cavity (21), and the distance between the third protrusion (33) and the fourth protrusion (34) is greater than the wall thickness between the input cavity (29) and the flow channel (25).
5. An electro-hydraulic proportional directional control valve according to claim 4, characterized in that: The distance between the flow channel one (24) and flow channel two (25) at the connection of the regulating cavity (21) is greater than the distance between the protrusion rod two (32) and the protrusion rod three (33).
6. An electro-hydraulic proportional directional control valve according to claim 1, wherein: A housing (6) is installed on the valve body seat (2). An end cap (7) and an abutment cap (8) are provided inside the housing (6). The abutment cap (8) is sleeved on the end of the valve stem (3). A spring (9) is provided on the housing (6). The two ends of the spring (9) abut against the end cap (7) and the abutment cap (8) respectively.
7. An electro-hydraulic proportional directional control valve according to claim 1, wherein: The valve body seat (2) is provided with a vertical groove (26), and a sealing head (4) for blocking the connecting hole (23) is provided in the vertical groove (26). A sealing cap (27) is threaded to the top of the vertical groove (26). A second spring (5) is provided in the vertical groove (26), and the two ends of the second spring (5) are connected to the sealing cap (27) and the sealing head (4) respectively.