一种燃油泵总成滤网结构

Abstract

本实用新型提供一种燃油泵总成滤网结构，涉及燃油泵滤网技术领域，包括油管，所述油管内固定安装有镂空环，所述镂空环一端内侧边缘位置插接有锥形设置的过滤网且镂空环一端靠近内侧边缘位置螺纹连接有用于与过滤网边缘搭接的螺纹环，所述油管进油端设置有同轴分布的中心弹簧杆，所述油管进油段内壁一侧向内延伸并与中心弹簧杆缸体部分转动连接，利用燃油流体的流动带动涡轮旋转，从而实现刮条对过滤网表面的清扫，不依赖车辆的惯性，确保了杂质清扫的可靠性。

Claims

1. A filter screen structure for a fuel pump assembly, characterized in that: The system includes an oil pipe (1), in which a hollow ring (8) is fixedly installed. A tapered filter screen (7) is inserted into the inner edge of one end of the hollow ring (8), and a threaded ring (17) for overlapping with the edge of the filter screen (7) is threadedly connected to the inner edge of the hollow ring (8). A coaxially distributed central spring rod (5) is provided at the oil inlet end of the oil pipe (1). One side of the inner wall of the oil inlet section of the oil pipe (1) extends inward and is rotatably connected to the cylinder part of the central spring rod (5). A turbine (4) is fixedly installed at the cylinder end of the central spring rod (5), and a scraper (6) that is slidably connected to the surface of the filter screen (7) is fixedly installed near the end of the telescopic rod surface of the central spring rod (5). The end of the telescopic rod of the central spring rod (5) is rotatably connected to the central tip of the outer side of the filter screen (7).

2. The fuel pump assembly screen structure of claim 1, wherein: An annular cover (18) is fixedly installed inside the oil pipe (1) on the side of the hollow ring (8) facing away from the turbine (4). The inner side of the annular cover (18) is hollowed out and used to filter fuel.

3. The fuel pump assembly screen structure of claim 1, wherein: The inner wall of the oil pipe (1) is also fixedly installed with a retaining ring (9). The outer wall of the retaining ring (9) is clearance-fitted with the inner wall of the annular cover (18), and one end of the retaining ring (9) is interference-fitted with the end of the annular cover (18) away from the hollow ring (8).

4. The fuel pump assembly screen structure of claim 3, wherein: A ring-shaped sealing cavity (19) is formed between the outer side of the retaining ring (9) and the inner wall of the oil pipe (1). A number of electric push rods (15) are fixedly installed on the side wall of the sealing cavity (19) facing the hollow ring (8) and are parallel to the central axis of the oil pipe (1). The telescopic ends of the electric push rods (15) are fixedly installed with the same push ring (10). A tube (16) is fixedly installed on the inner side of one end of the push ring (10) and is coaxially distributed with the oil pipe (1) and is inserted into the gap between the retaining ring (9) and the ring cover (18).

5. The fuel pump assembly screen structure of claim 4, wherein: The push ring (10) is fitted with the cavity wall of the sealing cavity (19) with a clearance, and one end of the push ring (10) is fixedly installed with a bracket (11) that passes through the annular cover (18) and faces the hollow ring (8). The part of the bracket located inside the annular cover (18) is fixedly installed with a ring (3).

6. The fuel pump assembly screen structure of claim 5, wherein: The other end of the hollow ring (8) is connected to a valve plate (13) at each hollowed-out part of the surface. The valve plate (13) moves along the radius of the oil pipe (1) and is located inside the annular cover (18). A diagonal rod (12) for abutting against the ring (3) is fixedly installed on the surface of the valve plate (13). An edge spring rod (14) is provided between the diagonal rod (12) and the hollowed-out side of the annular cover (18).

7. The fuel pump assembly screen structure of claim 6, wherein: The central axis of the edge spring rod (14) is set perpendicular to the central axis of the oil pipe (1).

8. The fuel pump assembly screen structure of claim 6, wherein: Two sealing plugs (2) are symmetrically arranged on the surface of the oil pipe (1). The two sealing plugs (2) are threadedly connected to the surface of the oil pipe (1) and located inside the annular cover (18).

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