Novel refueling oil plug

Abstract

A novel refueling oil plug comprises a valve body, a valve cover is arranged at the upper end of the valve body, a valve cavity is formed in the valve body and is a space where an inner valve element is arranged, an air cavity is formed in the inner valve element, a breathable film is arranged on the top of the air cavity, a rotational flow partition plate is arranged in the middle section of the air cavity, and an exhaust channel is formed in the bottom of the air cavity. An oil filling screw plug is arranged at the lower end of the valve body, the oil filling screw plug is fixedly connected with the lower end of the valve body through a fastening screw head, and an oil collecting core assembly used for absorbing oil droplets is arranged in the oil filling screw plug. The problem that a traditional oiling oil plug does not have the waterproof and breathable functions is solved.

Description

Technical Field

[0001] The present invention relates to the field of fuel filler plugs, and more particularly to a novel fuel filler plug. Background Art

[0002] The fuel filler plug is a part for adding lubricating oil to the transmission case and preventing external stains from entering the interior of the transmission. There are two existing structures for the current transmission fuel filler plug. One is made of plastic material, which is prone to aging, has insufficient high and low temperature resistance, and has a small installation torque. The other is made of metal material, which is easy to install but does not have a ventilation function and cannot ensure the balance of the internal air pressure during the operation of the transmission. Summary of the Invention

[0003] The purpose of the present invention is to provide a novel fuel filler plug in view of the corresponding deficiencies of the prior art, so as to solve the problem that the traditional fuel filler plug does not have the functions of waterproofing and ventilation.

[0004] The purpose of the present invention is achieved by the following solution: A novel fuel filler plug includes a valve body. A valve cover is provided at the upper end of the valve body, and a valve cavity is provided inside the valve body. The valve cavity is a space for arranging an inner valve core. An air cavity is provided inside the inner valve core. A breathable membrane is provided at the top of the air cavity, a swirl partition is provided in the middle section of the air cavity, and an exhaust passage is opened at the bottom of the air cavity. A fuel filling plug is provided at the lower end of the valve body. The fuel filling plug is connected and fixed to the lower end of the valve body through a fastening screw head. An oil collecting core assembly for absorbing oil beads is provided inside the fuel filling plug.

[0005] The oil collecting core assembly includes a porous chassis provided at the bottom of the fuel filling plug, an oil collecting sponge is provided above the porous chassis, a plurality of breathable through holes are provided on the surface of the oil collecting sponge, and a pull ring is provided at the bottom of the porous chassis.

[0006] A retaining ring is provided at the upper end of the inner wall of the fuel filling plug, and an anti-detachment stopper is rotatably provided at the bottom of the fuel filling plug where the oil collecting core assembly is installed.

[0007] A plurality of hooks are provided at the bottom of the valve cover, and the hooks are snap-fitted on the valve body. A plurality of exhaust holes are provided on the side surface of the valve cover.

[0008] A water blocking protrusion is provided on the inner side of the upper end of the valve body.

[0009] The bottom end of the valve cavity is a conical valve cavity, and the middle section outer wall of the inner valve core is a conical section, and the middle section of the inner valve core cooperates with the conical valve cavity.

[0010] A sealing ring is provided at the connection between the valve body and the fuel filling plug.

[0011] The centers of the valve cavity, the inner valve core, the fuel filling plug and the oil collecting core assembly are located on the same axis.

[0012] The outer circumference of the fuel filling plug is provided with threads, and the specification of the threads is M20.

[0013] The breathable membrane is made of polytetrafluoroethylene material, and the thickness of the breathable membrane is 0.1 mm to 0.5 mm.

[0014] The advantages of the present invention are that the fuel filling plug has the functions of waterproof and breathable. A detachable oil collecting core assembly is installed inside the structure of the fuel filling plug. During the pressure relief and exhaust process of the valve body, the oil mist beads in the air can be adsorbed by the oil collecting sponge. The maintenance personnel can disassemble the valve body from the automotive reducer by screwing, and quickly take out the oil collecting core assembly for replacement. The external threads of the fuel filling plug have the characteristics of convenient disassembly and assembly, stable pressure relief, remarkable waterproof effect, rich functions, easy maintenance and long service life. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is a front cross-sectional view of the present invention; Figure 3 It is a schematic disassembled structural diagram of the present invention; Figure 4 It is a schematic structural diagram of the oil collecting core assembly of the present invention; Figure 5 It is a cross-sectional structural view of the inner valve core of the present invention; Figure 6 It is an enlarged view of the partial A of the present invention. Detailed Embodiments

[0016] As Figures 1 to 6As shown in the figure, a new type of fuel filling plug includes a valve body 1. A valve cover 2 is provided at the upper end of the valve body 1. A plurality of hooks 4 are provided at the bottom of the valve cover 2, and the hooks 4 are snap-fitted on the valve body 1. A plurality of exhaust holes 13 are provided on the side of the valve cover 2. A water-blocking convex 11 is provided on the inner side of the upper end of the valve body 1. The end of the valve body 1 is isolated and protected by the end cover 2. When external water, dust, etc. enter the valve body 1, they will be blocked by the water-blocking convex 11, thus achieving the purpose of waterproofing, and the waterproof and breathable effect is remarkable. A valve cavity 15 is provided inside the valve body 1. The valve cavity 15 is a space for arranging an inner valve core 3. The bottom end of the valve cavity 15 is a conical valve cavity. The outer wall of the middle section of the inner valve core 3 is a conical section, and the middle section of the inner valve core 3 is matched with the conical valve cavity. An air cavity 17 is provided inside the inner valve core 3. A breathable membrane 12 is provided at the top of the air cavity 17. The breathable membrane 12 is made of polytetrafluoroethylene material, and the thickness of the breathable membrane 12 is 0.1 mm to 0.5 mm. A swirl partition 10 is provided in the middle section of the air cavity 17, and an exhaust passage 9 is opened at the bottom of the air cavity 17. A fuel filling plug 5 is provided at the lower end of the valve body 1. Threads are provided on the outer circumference of the fuel filling plug 5, and the specification of the threads is M20. The fuel filling plug 5 is connected and fixed to the lower end of the valve body 1 through a fastening screw head 14, and the fastening screw head 14 and the valve body 1 are of an integral structure. An oil collecting core assembly 6 for absorbing oil beads is provided inside the fuel filling plug 5. The oil collecting core assembly 6 includes a porous bottom plate 61 provided at the bottom of the fuel filling plug 5. A polyoil sponge 62 is provided above the porous bottom plate 61. A plurality of breathable through holes 63 are provided on the surface of the polyoil sponge 62. A pull ring 64 is provided at the bottom of the porous bottom plate 61. A retaining ring 8 is provided at the upper end of the inner wall of the fuel filling plug 5. An anti-detachment blocking member 16 is rotatably provided at the bottom of the fuel filling plug 5 where the oil collecting core assembly 6 is installed. A sealing ring 7 is provided at the connection between the valve body 1 and the fuel filling plug 5, which can improve the waterproof seal after the installation of the breather valve. The centers of the valve cavity 15, the inner valve core 3, the fuel filling plug 5, and the oil collecting core assembly 6 are located on the same axis.

[0017] During use, the fuel filling plug 5 is aligned with the exhaust valve port of the automotive reduction gear and screwed in by rotation. Then, a wrench is used to clamp onto the fastening screw head 14 and tightened for fixation. The high-pressure gas generated during the operation of the automotive reduction gear will enter the interior of the fuel filling plug 5 and undergo preliminary filtration through the oil collecting core assembly 6. During filtration, air enters the oil collecting sponge 62 through the porous bottom plate 61. The oil collecting sponge 62 is provided with multiple ventilation through holes. Under the condition of not affecting ventilation, oil droplets will adhere to the oil collecting sponge 62. Maintenance staff only need to regularly remove the valve body 1 from the valve port of the automotive reduction gear, then sequentially rotate the anti-disengagement part 16 and pinch the pull ring 64, and the oil collecting core assembly 6 can be extracted from the fuel filling plug 5 for replacement. The filtered gas rises and enters the exhaust passage 9, then enters the air chamber 17, spirally rises along the swirl partition 10, and the remaining oil mist droplets in the air will flow back along the swirl partition 10 and finally be discharged through the breathable membrane 12. The discharged high-pressure gas is discharged from the valve body through the exhaust hole 13. The working principle of the breathable membrane 12 is that in the state of water vapor, the water particles are very small. According to the principle of capillary movement, they can smoothly penetrate into the capillary to the other side, thus causing a ventilation phenomenon. When the water vapor condenses into water droplets, the particles become larger. Due to the surface tension of the water droplets, the water molecules "pull and counteract" each other, and the water molecules cannot smoothly break away from the water droplets and penetrate to the other side, that is, the penetration of water is prevented, enabling the breathable membrane to have a waterproof function, and the waterproof and breathable effect is remarkable.

[0018] Maintenance staff only need to regularly remove the valve body 1 from the valve port of the automotive reduction gear, and then fuel can be added through the fuel filling plug 5, enabling the exhaust valve to have the function of fuel filling, which is convenient for maintenance.

[0019] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Without departing from the spirit of the present invention, any modifications made by those skilled in the art to the present invention fall within the protection scope of the present invention.

Claims

1. A new type of fuel filling plug, comprising a valve body (1), a valve cover (2) is arranged at the upper end of the valve body (1), a valve cavity (15) is arranged inside the valve body (1), and the valve cavity (15) is a space for arranging an inner valve core (3), characterized in that: An air chamber (17) is arranged inside the inner valve core (3). A breathable membrane (12) is arranged at the top of the air chamber (17). A swirl partition plate (10) is arranged in the middle section of the air chamber (17). An exhaust passage (9) is opened at the bottom of the air chamber (17). A fuel filling plug (5) is arranged at the lower end of the valve body (1). The fuel filling plug (5) is fixedly connected to the lower end of the valve body (1) through a fastening screw head (14). An oil collecting core assembly (6) for absorbing oil droplets is arranged inside the fuel filling plug (5).

2. The novel fuel filling plug according to claim 1, characterized in that: The oil collecting core assembly (6) includes a porous bottom plate (61) arranged at the bottom of the fuel filling plug (5). An oil collecting sponge (62) is arranged above the porous bottom plate (61). A plurality of breathable through holes (63) are arranged on the surface of the oil collecting sponge (62). A pull ring (64) is arranged at the bottom of the porous bottom plate (61).

3. The novel fuel filling plug according to claim 1, characterized in that: A retaining ring (8) is arranged at the upper end of the inner wall of the fuel filling plug (5). An anti - detachment stopper (16) is rotatably arranged at the bottom of the fuel filling plug (5) where the oil collecting core assembly (6) is installed.

4. A novel fuel filling plug according to claim 1, characterized in that: A plurality of hooks (4) are arranged at the bottom of the valve cover (2). The hooks (4) are clamped on the valve body (1). A plurality of exhaust holes (13) are arranged on the side surface of the valve cover (2).

5. A novel fuel filling plug according to claim 1, characterized in that: A water - blocking convex (11) is arranged on the inner side of the upper end of the valve body (1).

6. A novel fuel filling plug according to claim 1, characterized in that: The bottom end of the valve chamber (15) is a conical valve chamber. The outer wall of the middle section of the inner valve core (3) is a conical section. The middle section of the inner valve core (3) is matched with the conical valve chamber.

7. A novel fuel filling plug according to claim 1, wherein: A sealing ring (7) is arranged at the connection between the valve body (1) and the fuel filling plug (5).

8. A novel fuel filling plug according to claim 1, characterized in that: The centers of the valve chamber (15), the inner valve core (3), the fuel filling plug (5) and the oil collecting core assembly (6) are located on the same axis.

9. A novel fuel filling plug according to claim 1, characterized in that: Threads are arranged on the outer circumference of the fuel filling plug (5), and the thread specification is M20.

10. A novel fuel filling plug according to claim 1, characterized in that: The breathable membrane (12) is made of polytetrafluoroethylene material, and the thickness of the breathable membrane (12) is 0.1 mm - 0.5 mm.

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