Cavity structure with rollover fuel oil leakage prevention function

Abstract

The utility model relates to the technical field of fuel oil supply devices of internal combustion engines, and discloses a cavity structure with a rollover and fuel oil leakage prevention function, which comprises a main cavity, a T-shaped left channel, a T-shaped right channel, an oil inlet channel and an oil cup, the T-shaped circuitous ventilation channel comprises a T-shaped left side channel and a T-shaped right side channel, an oil inlet channel is formed in one side of the main cavity, and an oil cup is arranged at the lower end of the main cavity; according to the utility model, the leakage rate can be greatly reduced under the working condition that the cavity is inclined inwards by 60 degrees, and the problem of fuel oil leakage when the traditional cavity is in a side turning or inclined state is effectively solved; the fuel oil sealing time can be continuously prolonged in the 60-degree side inclination state, and the safety and reliability of a fuel oil supply system are improved; the leakage-proof device does not depend on electronic elements, adopts a pure mechanical structure to realize leakage prevention, reduces the manufacturing cost, and improves the stability and durability of the system.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of internal combustion engine fuel supply device, concretely is a cavity structure with anti -rollover fuel leakage function. BACKGROUND

[0002] When the traditional cavity workpiece is rolled or inclined on the machine, due to the limitation of the float chamber structure, the float needle valve cannot effectively seal the oil inlet channel, resulting in fuel overflow from the main nozzle and the balance air hole. This not only causes fuel waste and environmental pollution, but also has fire hazards. According to the above problems, a cavity structure with anti-rollover fuel leakage function is proposed to effectively alleviate the oil leakage problem caused by rolling or turning a certain angle.

[0003] Therefore, a cavity structure with anti-rollover fuel leakage function is designed. UTILITY MODEL CONTENTS

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a cavity structure with anti-rollover fuel leakage function, which effectively solves the problems raised in the above background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a cavity structure with anti-rollover fuel leakage function, comprising a main cavity, a T-shaped left channel, a T-shaped right channel, an oil inlet channel and an oil cup, the upper end of the main cavity is provided with a T-shaped bypass air passage, the T-shaped bypass air passage comprises a T-shaped left channel and a T-shaped right channel, one side of the main cavity is provided with an oil inlet channel, and the lower end of the main cavity is provided with an oil cup.

[0006] Preferably, the T-shaped left channel comprises a first air inlet channel, a first air outlet channel and a balance air amount hole, the first air outlet channel communicates with the first air inlet channel, and the balance air amount hole is located at the mouth position of the first air outlet channel.

[0007] Preferably, the T-shaped right channel comprises a second air inlet channel and a second air outlet channel, and the second air outlet channel communicates with the tail of the second air inlet channel.

[0008] Compared with the prior art, the utility model has the beneficial effects that:

[0009] 1、The utility model can greatly reduce the leakage amount under 60° side inclination working condition, effectively solving the problem of fuel leakage of the traditional cavity under the condition of rolling or inclination;

[0010] 2、The novel type can keep the fuel sealing time continuously prolonged under 60° side inclination state, improving the safety and reliability of the fuel supply system;

[0011] 3. The new type does not depend on electronic components, realizes leakage prevention by pure mechanical structure, reduces manufacturing cost, and improves stability and durability of the system. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application, and together with the description serve to explain the present application, and do not limit the present application.

[0013] In the drawings:

[0014] Figure 1 is a schematic view of the overall structure of the present application;

[0015] Figure 2 is a schematic view of the structure of the main cavity of the present application;

[0016] Figure 3 is a schematic view of the A-A mark of the present application;

[0017] Figure 4 is a schematic view of the cross-sectional structure of the A-A of the present application;

[0018] Figure 5 is a sectional view of the A-A of the present application;

[0019] Figure 6 is a schematic view of the B-B mark of the present application;

[0020] Figure 7 is a schematic view of the cross-sectional structure of the B-B of the present application;

[0021] Figure 8 is a sectional view of the B-B of the present application;

[0022] Figure 9 is a schematic view of the structure of the inclined working condition of the present application;

[0023] Figure 10 is a schematic view of the structure of another inclined working condition of the present application;

[0024] In the drawings: 1, main cavity; 2, T-shaped left channel; 2-1, first air inlet channel; 2-2, first air outlet channel; 2-3, balance air amount hole; 3, T-shaped right channel; 3-1, second air inlet channel; 3-2, second air outlet channel; 4, oil inlet channel; 5, oil cup. DETAILED DESCRIPTION

[0025] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, rather than all the embodiments; on the basis of the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the range of protection of the utility model.

[0026] Embodiment one, by Figures 1-10 The utility model discloses a main cavity 1, T character left side channel 2, T character right side channel 3, oil inlet channel 4 and oil cup 5 are given, the upper end of main cavity 1 is equipped with T type circuitous air passage, and T type circuitous air passage includes T character left side channel 2 and T character right side channel 3, and one side of main cavity 1 is equipped with oil inlet channel 4, and the lower end of main cavity 1 is equipped with oil cup 5.

[0027] T character left side channel 2 includes first air inlet channel 2-1, first air outlet channel 2-2 and balance air hole 2-3, and first air outlet channel 2-2 communicates with first air inlet channel 2-1, and balance air hole 2-3 is located at the mouth position of first air outlet channel 2-2.

[0028] T character right side channel 3 includes second air inlet channel 3-1 and second air outlet channel 3-2, and second air outlet channel 3-2 communicates with the tail of second air inlet channel 3-1.

[0029] Working principle:

[0030] T type circuitous air passage is arranged at the top of main cavity 1, and the pipe diameter is 2.3mm, the length is greater than 30*30mm, and the balance air hole 2-3 (the hole diameter size can be adjusted) is added at the mouth position;

[0031] When the cavity workpiece is inclined as follows (see Figure 9 、 Figure 10 ), the fuel is almost deposited at the bottom position of oil cup 5, and at this time, the fuel amount in oil cup 5 is far lower than the mouth of first air inlet channel 2-1 and first air outlet channel 2-2, and in this state, T type circuitous air passage can effectively avoid fuel outflow, and ensure normal operation of the workpiece.

[0032] The specific working principle of the device is:

[0033] The first air inlet channel 2-1 on the air inlet end surface T character left side channel 2 of the cavity is divided into two directions for pressure balance as shown by the arrow;

[0034] One direction is that the first air inlet channel 2-1 sequentially passes through the air inlet second channel 3-1 on the T character right side channel 3, the second air outlet channel 3-2 and reaches the inside of the cavity for balance;

[0035] Another direction is by the first intake passage 2-1 through the T left channel 2-1 second exhaust passage 2-2, balance air hole 2-3 to the cavity outside the balance, while its balance air hole 2-3 can be adjusted according to the actual size of the pressure hole size to ensure the balance of internal and external pressure, thereby preventing the fuel from leaking under the action of pressure difference.

Claims

1. A cavity structure with anti-rollover fuel leakage function, comprising a main cavity (1), a T-shaped left channel (2), a T-shaped right channel (3), an oil inlet channel (4) and an oil cup (5), characterized in that: The upper end of the main cavity (1) is provided with a T-shaped detour air passage, which comprises a T-shaped left channel (2) and a T-shaped right channel (3), one side of the main cavity (1) is provided with an oil inlet channel (4), and the lower end of the main cavity (1) is provided with an oil cup (5).

2. The cavity structure with the anti-rollover fuel leakage function according to claim 1, characterized in that: The T-shaped left channel (2) comprises a first air inlet channel (2-1), a first air outlet channel (2-2) and a balance air amount hole (2-3), the first air outlet channel (2-2) is communicated with the first air inlet channel (2-1), and the balance air amount hole (2-3) is located at the mouth position of the first air outlet channel (2-2).

3. The cavity structure with the anti-rollover fuel leakage function according to claim 1, characterized in that: The T-shaped right channel (3) comprises a second air inlet channel (3-1) and a second air outlet channel (3-2), and the second air outlet channel (3-2) is communicated with the tail of the second air inlet channel (3-1).

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