Oil tank cover with vent hole structure

Abstract

The oil tank cover with the vent hole structure comprises a shell, an automatic ventilation assembly and an oil-gas separation assembly, a bottle opening is connected to the inner side of the shell in a threaded mode, the automatic ventilation assembly is located on the inner side of the bottle opening, and the automatic ventilation assembly comprises a supporting spring, a supporting plate, a baffle, a sealing cover and a vent hole. The supporting spring is arranged under the shell, the sealing cover is fixed to the upper end of the baffle, a plurality of sets of vent holes are formed in the side wall of the sealing cover at equal intervals, the oil-gas separation assembly is located on the outer side of the sealing cover, and the oil-gas separation assembly comprises a backflow cavity, a gas outlet hole, an oil hole and a foam ball. The air outlet hole is formed in the inner side of the shell in a penetrating mode, and the backflow cavity is fixed to the lower portion of the air outlet hole. The evaporated oil gas can be enriched on the oil tank cover and flows back into the oil tank, so that the pollution of the oil gas to the periphery of the power steering oil tank body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile power steering, in particular to an oil tank cover with a vent hole structure. Background Art

[0002] The steering oil tank is a normal pressure container, and a vent must be set to keep it unobstructed to ensure that the internal pressure of the steering oil tank does not change with the changes in the liquid level and oil temperature during the operation of the automobile steering system. For example, the patent document with application number CN201120347363.4 discloses an oil tank cover with a certain gap between the top of the relatively thick top and the refueling port, that is, a hidden vent is formed between the oil tank cover and the refueling port, thereby ensuring air circulation between the oil tank and the outside.

[0003] However, in similar schemes as mentioned above, when the motor pumps oil in and out, oil vapor is discharged outside through the vent line, resulting in gasoline waste and oil stains near the oil tank, thereby contaminating the tank body. In addition, when the user forgets to unscrew the vent hole, continued use will increase the internal pressure, resulting in inward compression of the tank body, causing the oil tank to deform, thereby causing losses.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and an oil tank cover with a vent structure is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an oil tank cover with a vent structure, which solves the problem that the similar scheme proposed in the above-mentioned background technology is that during the process of the motor pumping the oil in and out, the oil vapor is discharged outside the vent line, resulting in a waste of gasoline, and causing oil stains to be generated near the oil tank, thereby contaminating the tank body, and when the user forgets to unscrew the vent, continuing to use it will increase the internal pressure, resulting in the inward compression of the tank body, causing the oil tank to deform, thereby causing losses.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil tank cover with a vent structure, comprising an outer shell, an automatic vent assembly and an oil-gas separation assembly, the inner side of the outer shell is threadedly connected with a bottle mouth, and the automatic vent assembly is located on the inner side of the bottle mouth, and the automatic vent assembly comprises a support spring, a support plate, a baffle, a sealing cover and a vent, the support spring is arranged directly below the outer shell, the lower end of the support spring is fixed with the support plate, the upper end of the support spring is fixed with the baffle, the upper end of the baffle is fixed with the sealing cover, and the side wall of the sealing cover is equidistantly provided with a plurality of groups of the vents, the oil-gas separation assembly is located on the outer side of the sealing cover, and the oil-gas separation assembly comprises a reflux chamber, an air outlet, an oil hole and a foam ball, the inner side of the outer shell is penetrated with the air outlet, the reflux chamber is fixed below the air outlet, the bottom of the reflux chamber is fixed with the oil hole, and the upper end of the oil hole is provided with a foam ball.

[0007] Furthermore, a retaining ring is fixed to the lower end surface of the shell, and a sealing ring is attached below the retaining ring.

[0008] Furthermore, the outer side of the automatic ventilation component is threadedly connected to an inner cover, and a stopper is fixed to the inner upper end of the inner cover.

[0009] Furthermore, the support plate and the inner cover are fixedly connected, and the baffle plate and the inner cover are slidably connected, and both the support plate and the baffle plate are in annular shape.

[0010] Furthermore, a convex thread is arranged on the outer side of the inner cover, and the inner cover, the outer shell and the bottle mouth are all connected by threads to form a disassembly structure.

[0011] Furthermore, the automatic ventilation component forms a communication structure with the reflux chamber through a ventilation hole, and the diameter of the foam ball is larger than the diameter of the oil hole.

[0012] The utility model provides an oil tank cover with a vent structure, which has the following beneficial effects:

[0013] It can achieve that the oil and gas can be concentrated on the oil tank cover after evaporation and flow back into the oil tank, thereby reducing the pollution of the oil and gas to the surrounding of the power steering oil tank. When the user forgets to unscrew the vent hole, the vent hole can be automatically opened to make the air pressure inside and outside the tank consistent, thereby avoiding the formation of pressure difference, preventing the oil tank from deforming and avoiding losses. The specific contents are as follows:

[0014] When the operator forgets to open the vent, a pressure difference is formed inside and outside the oil tank, compressing the spring downward, thereby driving the sealing cover to slide downward, causing the oil vapor to move upward and pass through the vent into the reflux chamber. The oil vapor contacts the inner cover due to the temperature difference, resulting in the separation of oil and gas in the oil vapor, causing the gas to be discharged through the vent, while the gasoline flows into the oil tank through the oil hole along the reflux chamber, thereby avoiding gasoline contamination of the surrounding area of ​​the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main cross-sectional structure of an oil tank cover with a vent hole structure according to the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of an oil tank cover with a vent structure according to the utility model;

[0017] Figure 3 This is a schematic diagram of the vertical structure of the inner cover of an oil tank cover with a vent hole structure according to the utility model;

[0018] Figure 4 The utility model is a schematic structural diagram of an automatic ventilation component of an oil tank cover with a ventilation hole structure.

[0019] In the figure: 1. outer shell; 11. retaining ring; 2. sealing ring; 3. automatic ventilation assembly; 301. support spring; 302. support plate; 303. baffle; 304. sealing cover; 305. vent; 4. inner cover; 41. stopper; 42. convex thread; 5. oil-gas separation assembly; 501. reflux chamber; 502. air outlet; 503. oil hole; 504. foam ball; 6. bottle mouth. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figures 1 to 4As shown, an oil tank cover with a vent structure includes a shell 1, an automatic vent assembly 3 and an oil-gas separation assembly 5, and the automatic vent assembly 3 is located on the inner side of the bottle mouth 6, and the automatic vent assembly 3 includes a support spring 301, a support plate 302, a baffle 303, a sealing cover 304 and a vent 305, a support spring 301 is arranged directly below the shell 1, and a support plate 302 is fixed to the lower end of the support spring 301, because the support plate 302 and the inner cover 4 are fixedly connected, it is used to improve the stability of the inner cover 4 and prevent it from being deformed under pressure, and a baffle 303 is fixed to the upper end of the support spring 301, and the baffle 303 and the inner cover 4 are slidably connected, and the support plate 302 and the baffle 303 are both annular, which is convenient for the oil tank and the sealing cover 304 to be fixedly connected. A connecting structure is formed between them, the outer side of the automatic ventilation component 3 is threadedly connected to the inner cover 4, and a block 41 is fixed to the inner upper end of the inner cover 4, and the baffle 303 is clamped by the block 41 to fix the position of the sealing cover 304, because the automatic ventilation component 3 forms a connecting structure with the reflux chamber 501 through the vent hole 305, so that the oil vapor can flow out of the oil and gas tank upward, which is beneficial for the oil vapor to leave the tank body, and the upper end of the baffle 303 is fixed with a sealing cover 304, and the side wall of the sealing cover 304 is equidistantly provided with a number of groups of ventilation holes 305, which can avoid the blockage of the ventilation holes and increase the smoothness of the flow of oil vapor. When the user forgets to unscrew the ventilation holes, the ventilation holes can be automatically opened to make the air pressure inside and outside the tank body consistent, thereby avoiding the formation of pressure difference, preventing the oil tank from deformation, and avoiding losses.

[0022] The oil-gas separation component 5 is located on the outside of the sealing cover 304. The oil-gas separation component 5 includes a reflux chamber 501, an air outlet 502, an oil hole 503 and a foam ball 504. The air outlet 502 is provided on the inner side of the shell 1, and the reflux chamber 501 is fixed below the air outlet 502. When the oil vapor passes through the reflux chamber 501, the oil vapor condenses when it is cold, thereby decomposing the oil vapor into gasoline and air, thereby avoiding the oil and gas from polluting the surrounding of the power steering oil tank body. A retaining ring 11 is fixed on the lower end surface of the shell 1, and a sealing ring 2 is attached below the retaining ring 11. The retaining ring 11 and the sealing ring 2 can seal the bottle mouth 6 and the shell 1, thereby avoiding the gasoline from flowing out along the shell 1 and the bottle mouth 6 to cause pollution, and the bottom of the reflux chamber 501 is fixed with an oil hole 503. The gasoline decomposed from the oil vapor flows along the oil hole 503. 03 to the oil tank, thereby avoiding, thereby reducing the pollution of oil and gas to the surrounding of the power steering oil tank body, and can avoid gasoline waste, a foam ball 504 is provided at the upper end of the oil hole 503, because the diameter of the foam ball 504 is larger than the diameter of the oil hole 503, thereby being able to block the oil hole 503, and avoiding that when the tank body compresses the support spring 301, air escapes from the oil hole 503, resulting in insufficient pressure to make the baffle 303 and the block 41 engage, resulting in poor oil vapor circulation, and the volume of the foam ball 504 is relatively light. When there is gasoline in the reflux chamber 501, the foam ball 504 can float to avoid affecting the gasoline reflux, the inner side of the outer shell 1 is threadedly connected to the bottle mouth 6, the outer side of the inner cover 4 is provided with a convex thread 42, and the inner cover 4, the outer shell 1 and the bottle mouth 6 are all threadedly connected to form a disassembly structure, which is easy to install and disassemble.

[0023] In summary, when the oil tank cover with the vent hole structure is used, first, the inner cover 4 is screwed onto the inner side of the bottle mouth 6 through the convex thread 42, and the sealing cover 304 is pressed downward to make the baffle 303 slide to the bottom of the block 41, so that the sealing cover 304 and the reflux chamber 501 form a communicating structure, and then the outer shell 1 is screwed onto the outer side of the bottle mouth 6. At this time, the upper and lower ends of the sealing ring 2 are tightly fitted with the baffle 11 and the upper end of the bottle mouth 6, and the upper end of the inner cover 4 is tightly fitted with the lower end surface of the outer shell 1. If the operator forgets to press the sealing cover 304, the oil tank is sealed inside the inner structure. When the car turns, the pressure inside the oil tank increases, so that a pressure difference is formed inside and outside the oil tank, thereby making the sealing A downward force is formed at the cover 304, and the support spring 301 is compressed, thereby driving the baffle 303 and the sealing cover 304 to slide downward until the baffle 303 is engaged with the block 41. At this time, the vent hole 305 and the reflux chamber 501 form a connecting structure, and the oil vapor passes upward through the vent hole 305 into the reflux chamber 501, and the oil vapor moves in the reflux chamber 501 and contacts with the inner cover 4. When it is cooled, the oil and gas in the oil vapor are separated, so that the clean gas is discharged through the air outlet 502, and the condensed gasoline flows to the bottom of the reflux chamber 501, lifts the foam ball 504, and then flows into the oil tank from the oil hole 503, thereby avoiding gasoline contamination of the surrounding area of ​​the tank.

[0024] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0025] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An oil tank cover with a vent structure, comprising a housing (1), an automatic vent assembly (3) and an oil-gas separation assembly (5), characterized in that: The inner side of the shell (1) is threadedly connected to a bottle mouth (6), and the automatic ventilation component (3) is located on the inner side of the bottle mouth (6), and the automatic ventilation component (3) comprises a support spring (301), a support plate (302), a baffle (303), a sealing cover (304) and a vent hole (305), the support spring (301) is arranged directly below the shell (1), the support plate (302) is fixed to the lower end of the support spring (301), the baffle (303) is fixed to the upper end of the support spring (301), and the sealing cover (304) is fixed to the upper end of the baffle (303), and The side wall of the sealing cover (304) is provided with a plurality of groups of vent holes (305) at equal intervals. The oil-gas separation component (5) is located outside the sealing cover (304), and the oil-gas separation component (5) comprises a reflux chamber (501), an air outlet hole (502), an oil hole (503) and a foam ball (504). The air outlet hole (502) is provided through the inner side of the housing (1), and the reflux chamber (501) is fixed below the air outlet hole (502). The oil hole (503) is fixed at the bottom of the reflux chamber (501), and a foam ball (504) is provided at the upper end of the oil hole (503).

2. The oil tank cover with a vent structure according to claim 1, characterized in that: A retaining ring (11) is fixed to the lower end surface of the housing (1), and a sealing ring (2) is attached below the retaining ring (11).

3. The oil tank cover with a vent structure according to claim 1, characterized in that: The outer side of the automatic ventilation component (3) is threadedly connected to an inner cover (4), and a stopper (41) is fixed to the inner upper end of the inner cover (4).

4. The oil tank cover with a vent structure according to claim 3, characterized in that: The support plate (302) and the inner cover (4) are fixedly connected, and the baffle plate (303) and the inner cover (4) are slidably connected, and both the support plate (302) and the baffle plate (303) are annular.

5. The oil tank cover with a vent structure according to claim 4, characterized in that: The outer side of the inner cover (4) is provided with a convex thread (42), and the inner cover (4), the outer shell (1) and the bottle mouth (6) are all connected by threads to form a disassembly structure.

6. The oil tank cover with a vent structure according to claim 1, characterized in that: The automatic ventilation component (3) forms a communication structure with the reflux chamber (501) via the ventilation hole (305), and the diameter of the foam ball (504) is greater than the diameter of the oil hole (503).

Images