An adjustable straight-through check valve for diesel fuel lines
CN224339095UActive Publication Date: 2026-06-09HEBEI HUABEI DIESEL ENGINE
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI HUABEI DIESEL ENGINE
- Filing Date
- 2025-05-27
- Publication Date
- 2026-06-09
AI Technical Summary
Technical Problem
In existing diesel engine fuel systems, the bypass-type non-adjustable check valve suffers from problems such as high diesel flow resistance, low flow rate, and low yield.
Method used
An adjustable straight-through check valve is designed. The opening pressure is adjusted by adjusting the spring compression length through threaded connection and screw plug to ensure consistent diesel fuel flow, reduce leakage resistance, and fix the position with a screw sleeve to adapt to different system requirements.
Benefits of technology
This allows for increased diesel flow rate within the same spatial structure, improving yield and reducing manufacturing costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224339095U_ABST
Abstract
The utility model discloses a kind of adjustable straight-through type check valves for diesel engine fuel pipeline, belong to diesel engine field, including valve body and the valve core, spring, screw plug, screw sleeve sequentially arranged in the inner cavity of valve body;The inner cavity of valve body includes the first cavity, second cavity and third cavity sequentially arranged;Third cavity surface sets thread;Valve core includes the first core body, second core body and third core body sequentially arranged;Third core body is cylinder;Screw plug is cylinder, and thread is set on cylindrical surface;The lower bottom surface of screw plug is connected with screw sleeve, and clamping groove is set on the outer surface of screw sleeve;Screw plug is connected with third cavity by thread;Several through holes are set between the upper bottom surface of screw plug and screw sleeve;Spring is clamped on screw plug one end, and the other end is inserted into the inner cavity of the core body of valve core.The pressure set value of the utility model can be adjusted, set on low-pressure diesel pipeline after high-pressure diesel pump is transported low-pressure oil return pipeline, to limit low-pressure pipeline diesel pressure for high-pressure diesel engine to deliver diesel oil.
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