Air suction prevention structure of fuel tank
By setting a rotatable extended suction pipe and rotary adjusting member at the bottom of the fuel tank, the problem that existing fuel tanks are difficult to avoid fuel emptying when there is less fuel and a large working inclination angle is high, and the stability and structure of fuel supply are achieved ease and low cost.
Patent Information
- Application Number
- CN202421234903.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-31
AI Technical Summary
When the existing fuel tank is less fuel and the working inclination angle is large, the oil suction port is arranged in the middle of the fuel tank, making it difficult to avoid fuel emptying, and the depth of the concave structure at the bottom of the fuel tank is limited, so the effect of avoiding the emptying is average.
By fixing a fixed suction pipe at the bottom of the fuel tank, the fixed suction pipe is rotatably connected to the extended suction pipe through a rotary joint, and a 360° rotational rotating adjuster is provided at the end of the extended suction pipe to achieve 360° rotation of the suction pipe to ensure oil suction The port always points to the lowest point of the fuel tank.
When there is less fuel and a large working inclination angle, the design of the extended oil suction pipe and rotary adjusting parts can effectively avoid fuel emptying, ensure stable fuel supply, and have a simple structure and low cost.
Smart Images
Figure CN222473906U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fuel tanks, and in particular to a fuel tank anti-cavitation structure. Background Art
[0002] Nowadays, the fuel tank generally arranges the fuel suction port in the middle of the fuel tank, and also has a detachable concave structure at the bottom of the fuel tank in order to clean the impurities in the fuel tank.
[0003] Sometimes, due to the space limitation of the whole machine, the fuel tank needs to be made into a flat structure. When the fuel is low and the excavator has a large working angle, the existing fuel tank suction scheme has the suction port arranged in the middle of the fuel tank, which makes it difficult to avoid fuel suction. The concave structure at the bottom of the fuel tank is also limited in depth due to space limitations, and the effect of avoiding suction is not so good. Summary of the invention
[0004] The purpose of the utility model is to provide a fuel tank anti-cavitation structure, which can ensure that the fuel supply is not emptied when the excavator has less fuel and a large working angle through a rotatable extended oil suction pipe and a rotating adjustment member at the end of the extended oil suction pipe, and has a simple structure and low cost.
[0005] The utility model is realized by the following technical solutions:
[0006] A fuel tank anti-cavitation structure comprises a fuel tank. A fixed oil suction pipe is fixedly provided at the bottom of the fuel tank. The fixed oil suction pipe is rotatably connected to an extended oil suction pipe via a rotary joint. A rotary adjustment piece is provided at the end of the extended oil suction pipe. The extended oil suction pipe can realize 360° rotation. The other end of the fixed oil suction pipe is connected to a fuel hose.
[0007] Furthermore, the extended oil suction pipe includes a bent pipe portion and a horizontal pipe portion, the horizontal pipe portion is arranged parallel to the bottom plane of the fuel tank, and the horizontal pipe portion extends toward the side wall of the fuel tank, and the rotary adjustment piece is welded to the end of the horizontal pipe portion.
[0008] Furthermore, the rotary adjustment member is an umbrella-shaped structure.
[0009] Furthermore, the rotary adjustment member is a spherical structure.
[0010] Furthermore, the rotary joint includes a joint head body, the interior of the joint head body is a stepped sleeve structure, the upper part of the fixed oil suction pipe is a boss transition part to prevent the rotary joint from falling off, the boss transition part is rotatably arranged in the joint head body, a sealing ring is provided between the boss transition part and the inner wall of the joint head body, and the upper inner wall of the joint head body is connected to the extended oil suction pipe by a threaded connection.
[0011] Furthermore, two O-rings are provided between the boss transition portion and the inner wall of the joint head.
[0012] Furthermore, the diameter of the boss transition portion is larger than the diameter of the fixed oil suction pipe, and a limiting portion is provided on the inner side of the lower end portion of the joint head body, and the limiting portion cooperates with the boss transition portion to achieve limiting.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] The extended oil suction pipe can rotate 360°, and the rotating adjustment part of the umbrella-shaped structure or the ball-shaped structure works when the whole machine is tilted. The flowing fuel can make the extended oil suction pipe always suck the fuel at the lowest point of the fuel tank, avoiding sucking out when the fuel is low. It has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of embodiment 1 of the utility model;
[0016] Figure 2 is a cross-sectional view of embodiment 1 of the utility model;
[0017] Figure 3 It is a rotation state diagram of embodiment 1 of the utility model;
[0018] Figure 4 It is a cross-sectional view of the rotary joint of the utility model;
[0019] Figure 5 It is a structural schematic diagram of embodiment 2 of the present utility model.
[0020] In the figure: 1. fuel tank; 2. swivel joint; 3. extended oil suction pipe; 4. fixed oil suction pipe; 5. sealing ring; 6. swivel adjustment member; 7. boss transition part; 8. joint head; 9. thread; 10. limit part. DETAILED DESCRIPTION
[0021] The utility model is further described below in conjunction with the accompanying drawings.
[0022] like Figure 1 – Figure 4As shown, embodiment 1, a fuel tank anti-cavitation structure, includes a fuel tank 1, a fixed oil suction pipe 4 is fixedly provided at the bottom of the fuel tank 1, the fixed oil suction pipe 4 is rotatably connected to an extended oil suction pipe 3 through a rotary joint 2, and a rotary adjustment member 6 is provided at the end of the extended oil suction pipe 3, the extended oil suction pipe 3 can realize 360° rotation, and the other end of the fixed oil suction pipe 4 is connected to a fuel hose; the extended oil suction pipe 3 includes a bent pipe portion and a horizontal pipe portion, the horizontal pipe portion is arranged parallel to the bottom plane of the fuel tank 1, and the horizontal pipe portion is extended toward the side wall of the fuel tank 1, and the rotary adjustment member 6 is welded to the end of the horizontal pipe portion; the rotary adjustment member 6 is a shell of an umbrella-shaped structure; the rotary joint 2 includes a joint head body 8 The interior of the joint head body 8 is a stepped sleeve structure, the upper part of the fixed oil suction pipe 4 is a boss transition part 7, the boss transition part 7 is rotatably arranged in the joint head body 8, the boss transition part 7 and the inner wall of the joint head body 8 are clearance-matched, a sealing ring 5 is arranged between the boss transition part 7 and the inner wall of the joint head body 8, the upper inner wall of the joint head body 8 is connected to the extended oil suction pipe 3 by a thread 9; two O-rings 5 are arranged between the boss transition part 7 and the inner wall of the joint head body 8; the tube diameter of the boss transition part 7 is larger than the tube diameter of the fixed oil suction pipe 4, a limiting part 10 is arranged on the inner side of the lower end of the joint head body 8, the boss transition part 7 is installed at the inner diameter of the lower end of the joint head body 8, and the limiting part 10 cooperates with the boss transition part 7 to achieve limiting.
[0023] Embodiment 2, a fuel tank anti-cavitation structure, comprising a fuel tank 1, a fixed oil suction pipe 4 is fixedly provided at the bottom of the fuel tank 1, the fixed oil suction pipe 4 is rotatably connected to an extended oil suction pipe 3 through a rotary joint 2, a rotary adjustment member 6 is provided at the end of the extended oil suction pipe 3, the extended oil suction pipe 3 can realize 360° rotation, and the other end of the fixed oil suction pipe 4 is connected to a fuel hose; the extended oil suction pipe 3 comprises a bent pipe portion and a horizontal pipe portion, the horizontal pipe portion is arranged parallel to the bottom plane of the fuel tank 1, and the horizontal pipe portion is extended toward the side wall of the fuel tank 1, and the rotary adjustment member 6 is welded to the end of the horizontal pipe portion; Figure 5 As shown, the rotary adjustment member 6 is a spherical structure; the rotary joint 2 includes a joint head body 8, the interior of the joint head body 8 is a stepped sleeve structure, the upper part of the fixed oil suction pipe 4 is a boss transition part 7, the tube diameter of the boss transition part 7 is larger than the tube diameter of the fixed oil suction pipe 4, the boss transition part 7 is rotatably arranged in the joint head body 8, the boss transition part 7 and the inner wall of the joint head body 8 are clearance-matched, a sealing ring 5 is arranged between the boss transition part 7 and the inner wall of the joint head body 8, the upper inner wall of the joint head body 8 is connected to the extended oil suction pipe 3 by a thread 9; two O-rings 5 are arranged between the boss transition part 7 and the inner wall of the joint head body 8; the tube diameter of the boss transition part 7 is larger than the tube diameter of the fixed oil suction pipe 4, a limiting part 10 is arranged on the inner side of the lower end of the joint head body 8, the boss transition part 7 is installed at the inner diameter of the lower end of the joint head body 8, and the limiting part 10 cooperates with the boss transition part 7 to achieve limiting.
[0024] like Figure 3 As shown, when the construction machinery or vehicle is tilted while working, the fuel will flow to the lower part of the fuel tank. During the flow of the fuel, it will impact the surface of the umbrella-shaped structure. The impact force of the fuel will cause the extended oil suction pipe 3 to rotate, and finally the extended oil suction pipe 3 will be consistent with the direction of fuel flow. The oil suction port will rotate to the lower part of the fuel tank, and the oil suction pipe can absorb the fuel at the lower part of the fuel tank, thereby achieving the purpose of preventing air suction.
[0025] like Figure 5 As shown, when the construction machinery or vehicle is tilted for operation, the spherical structure can also make the oil suction port of the extended oil suction pipe 3 suck the fuel at the bottom by relying on gravity, thereby achieving the purpose of preventing air suction.
Claims
1. A fuel tank anti-cavitation structure, comprising a fuel tank (1), wherein a fixed oil suction pipe (4) is fixedly provided at the bottom of the fuel tank (1), and characterized in that: The fixed oil suction pipe (4) is rotatably connected to an extended oil suction pipe (3) via a rotary joint (2), and a rotary adjustment member (6) is provided at the end of the extended oil suction pipe (3).
2. The fuel tank anti-cavitation structure according to claim 1, characterized in that: The extended oil suction pipe (3) comprises a bent pipe portion and a horizontal pipe portion, wherein the horizontal pipe portion is arranged parallel to the bottom plane of the fuel tank (1) and extends toward the side wall of the fuel tank (1), and the rotary adjustment member (6) is welded to the end of the horizontal pipe portion.
3. The fuel tank anti-cavitation structure according to any one of claims 1-2, characterized in that: The rotating adjustment member (6) is an umbrella-shaped structure.
4. The anti-cavitation structure of a fuel tank according to any one of claims 1 to 2, characterized in that: The rotating adjustment member (6) is a spherical structure.
5. The fuel tank anti-cavitation structure according to claim 1, characterized in that: The rotary joint (2) comprises a joint head body (8), the upper part of the fixed oil suction pipe (4) is a boss transition part (7), the boss transition part (7) is rotatably arranged in the joint head body (8), a sealing ring (5) is arranged between the boss transition part (7) and the inner wall of the joint head body (8), and the upper inner wall of the joint head body (8) is connected to the extended oil suction pipe (3) through a thread (9).
6. The fuel tank anti-cavitation structure according to claim 5, characterized in that: Two O-type sealing rings (5) are arranged between the boss transition portion (7) and the inner wall of the joint head body (8).
7. The fuel tank anti-cavitation structure according to claim 5, characterized in that: The tube diameter of the boss transition part (7) is larger than the tube diameter of the fixed oil suction pipe (4), and a limiting part (10) is provided on the inner side of the lower end of the joint head body (8), and the limiting part (10) cooperates with the boss transition part (7) to achieve limiting.