CN209892817U

CN209892817U - Oil tank exhaust valve with pressure maintaining function

Info

Publication number: CN209892817U
Application number: CN201920605407.5U
Authority: CN
Inventors: 高计超; 陈斌; 李冬梅; 李艮春
Original assignee: JIANGSU AOLIWEI SENSING TECH CO LTD
Current assignee: JIANGSU AOLIWEI SENSING TECH CO LTD
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-01-03
Anticipated expiration: 2029-04-29

Abstract

The utility model discloses a take oil tank discharge valve of pressurize function in the car valve field, including setting up the upper cover at the valve body top, the gas vent has been seted up on the upper cover, the valve body is inside to divide into cavity and lower cavity through the inner valve cup, the exhaust hole has been seted up at inner valve cup center, be provided with the float in the cavity of resorption, the float links to each other with the valve body bottom through the spring, the top of float is provided with can be with exhaust hole bottom confined valve block, the inlet of cavity under the valve body periphery is seted up and is linked to each other, exhaust hole top periphery processing has the boss, set up the exhaust breach on the boss, be provided with the video disc that can float from top to bottom in the cavity of resorption, leave the clearance between video disc periphery and the last cavity lateral wall, through setting up the video disc in the valve body, make the oil gas emission in the fuel tank more reliable and, The fuel tank is blocked and fails, and can be used in the fuel tank of the automobile.

Description

Oil tank exhaust valve with pressure maintaining function

Technical Field

The utility model relates to a valve, in particular to oil tank discharge valve.

Background

The prior art discloses an anti-overturn valve, and the bulletin number is as follows: CN 201121747, including setting up the upper cover at the valve body top, the upper cover has seted up the gas vent, and the valve body is inside to be divided into cavity and lower cavity through the valve inner cup, and the exhaust hole has been seted up at the valve inner cup center, be provided with the float in the lower cavity, the float links to each other with the valve body bottom through the spring, and the top of float is provided with can be with exhaust hole bottom confined valve block, and the inlet of cavity under the valve body periphery is seted up and is communicated, and it does not satisfy current emission standard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a take oil tank discharge valve of pressurize function for it is more stable to exhaust, accords with current emission standard.

The purpose of the utility model is realized like this: the utility model provides a take oil tank discharge valve of pressurize function, covers on including setting up the upper cover at the valve body top and has seted up the gas vent, and the valve body is inside to divide into cavity and lower cavity through the inner valve cup, and the exhaust hole has been seted up at inner valve cup center, be provided with the float in the cavity of resorption, the float links to each other through spring and valve body bottom, and the top of float is provided with can be with exhaust hole bottom confined valve block, and the inlet of cavity under the valve body periphery is seted up and is communicated, exhaust hole top periphery processing has the boss, has seted up the exhaust breach on the boss, but goes up the internal video disc that floats of being provided with from top to bottom of.

When the utility model works, under normal conditions, fuel steam is allowed to flow from the oil tank to the carbon tank through the exhaust hole and the exhaust port, thereby preventing the generation of overhigh positive pressure in the oil tank; meanwhile, fresh air is allowed to be supplemented into the oil tank through the carbon tank, so that excessive negative pressure is prevented from being generated in the oil tank; compared with the prior art, the beneficial effects of the utility model reside in that, through set up the video disc in the valve body for the oil gas in the fuel tank discharges more reliable and more stable, accords with emission standard, and the video disc structure still can prevent that liquid fuel from sloshing to the carbon tank, causes carbon tank over-saturation, jam, inefficacy. The utility model discloses can be used to in the car fuel tank.

In order to enhance the stability of the disc, the top surface of the valve inner cover is provided with a plurality of supporting bulges which are flush with the bosses.

As a further limitation of the present invention, the bottom of the upper cover is provided with a plurality of limiting protrusions. The limiting bulge prevents the exhaust port from being blocked when the disk rises.

As a further limitation of the present invention, the disc is provided with a plurality of weight holes. The design of the balance weight hole can adjust the jacking pressure of the disc by adjusting the weight of the disc without influencing air exhaust.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention.

Fig. 2 is a schematic view of a disc structure of the present invention.

The valve comprises a valve body 1, an upper cavity 1a, a lower cavity 1b, an inner cover 2, an exhaust hole 2a, a boss 2b, a support protrusion 2c, an upper cover 3, an exhaust hole 3a, a limit protrusion 3b, a float 4, a spring 5, a valve plate 6, a disc 7 and a counterweight hole 7 a.

Detailed Description

As shown in figure 1-2, an oil tank vent valve with pressure maintaining function comprises an upper cover 3 arranged on the top of a valve body 1, an exhaust port 3a is arranged on the upper cover 3, the interior of the valve body 1 is divided into an upper cavity 1a and a lower cavity 1b by an inner valve cover 2, an exhaust hole 2a is arranged in the center of the inner valve cover 2, a floater 4 is arranged in the lower cavity 1b, the floater 4 is connected with the bottom of the valve body 1 by a spring 5, a valve plate 6 capable of sealing the bottom of the exhaust hole 2a is arranged on the top of the floater 4, a liquid inlet communicated with the lower cavity 1b is arranged on the periphery of the valve body 1, a boss 2b is processed on the periphery of the top of the exhaust hole 2a, an exhaust gap is arranged on the boss 2b, a disc 7 capable of floating up and down is arranged in the upper cavity 1a, a plurality of weight holes are arranged on the disc 7, a gap is left between the periphery of, the bottom of the upper cover 3 is provided with a plurality of limiting bulges 3 b.

When the utility model works, under normal conditions, fuel steam is allowed to flow from the oil tank to the carbon tank through the exhaust hole 2a and the exhaust port 3a, so that an over-high positive pressure is prevented from being generated in the oil tank, and in work and refueling, if the pressure in the oil tank is high enough, the head valve can be pushed open, so that more fuel steam is allowed to flow from the oil tank to the carbon tank; and meanwhile, fresh air is allowed to be supplemented into the oil tank through the carbon tank, so that excessive negative pressure is prevented from being generated in the oil tank.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. The utility model provides a take oil tank discharge valve of pressurize function, is covered on including setting up the upper cover at the valve body top and has seted up the gas vent, and the valve body is inside to divide into cavity and lower cavity through the inner valve cup, and the exhaust hole has been seted up at the inner valve cup center, be provided with the float in the cavity of resorption, the float links to each other through spring and valve body bottom, and the top of float is provided with can be with exhaust hole bottom confined valve block, and the inlet of cavity under the valve body periphery is seted up and is communicated, its characterized in that, exhaust hole top periphery processing has the boss, has seted up the exhaust breach on the boss, but goes up the internal video disc that floats from top to bottom that is.

2. The oil tank vent valve with pressure maintaining function according to claim 1, wherein the top surface of the inner valve cover is provided with a plurality of supporting protrusions which are flush with the bosses.

3. The exhaust valve with the pressure maintaining function for the oil tank as claimed in claim 1 or 2, wherein a plurality of limiting protrusions are arranged at the bottom of the upper cover.

4. The exhaust valve of the oil tank with the pressure maintaining function according to claim 1 or 2, wherein a plurality of weight holes are formed in the disc.