阅读说明：本技术 一种新型单向阀 (Novel one-way valve ) 是由 赵战胜 徐京 于 2020-07-02 设计创作，主要内容包括：本发明提供了一种新型单向阀,其结构简单,具有低渗透性,且密封性好、制作成本低。阀体的出口面域位置盖装有阀门,所述阀体的出口面域的外周的一边设置有两侧凸起的转轴安装凸起,转轴结构的外环部分套装有扭簧,所述转轴结构插装于所述转轴安装凸起、并自由转动,所述阀门的对应于转轴结构的位置设置有凸起的套装结构,所述阀门的至少一个套装结构固套于所述转轴结构的一端,所述扭簧在阀门安装前预设有预紧力,所述扭簧的一端抵靠住所述阀体的对应外壁,所述扭簧的另一端压附住所述阀门的上表面,所述阀门的主体结构的下表面固设有阀门密封件,所述扭簧驱动阀门的阀门密封件压附住所述阀体的出口面域的外周。(The invention provides a novel one-way valve which is simple in structure, low in permeability, good in sealing performance and low in manufacturing cost. The valve is installed to the lid of the export face territory position of valve body, one side of the periphery of the export face territory of valve body is provided with the bellied pivot of both sides installation arch, and the outer loop part cover of pivot structure is equipped with the torsional spring, pivot structure cartridge in pivot installation arch and free rotation, the position corresponding to pivot structure of valve is provided with bellied suit structure, at least one suit structure of valve firmly overlap in the one end of pivot structure, the pretightning force is preset before the valve installation to the torsional spring, the one end of torsional spring supports and leans on to live the corresponding outer wall of valve body, the other end pressure of torsional spring attaches the upper surface of valve, the lower surface of the major structure of valve has set firmly the valve seal spare, the valve seal spare pressure that the valve was driven to the torsional spring attaches the periphery of the export face territory of valve body.)

1. A novel check valve is characterized in that: the valve comprises a valve body and a valve, wherein the valve is arranged on the position of an outlet surface area of the valve body in a covering manner, one side of the periphery of the outlet surface area of the valve body is provided with a rotating shaft mounting protrusion with two convex sides, the outer ring part of a rotating shaft structure is sleeved with a torsion spring, the rotating shaft structure is inserted in the rotating shaft mounting protrusion and freely rotates, the position of the valve corresponding to the rotating shaft structure is provided with a convex sleeving structure, at least one sleeving structure of the valve is fixedly sleeved at one end of the rotating shaft structure, the torsion spring is preset with pretightening force before the valve is mounted, one end of the torsion spring is abutted against the corresponding outer wall of the valve body, the other end of the torsion spring presses the upper surface of the valve, the lower surface of the main structure of the valve is fixedly provided with a valve sealing element, the valve sealing element of the torsion spring driving the valve presses the periphery of the, The outside is used for connecting the valve body shell of oil tank, valve body major structure and valve body shell pass through rubber coating integrated into one piece.

2. A novel one-way valve as defined in claim 1, wherein: the pivot structure includes first pivot, second pivot, the pivot installation arch includes first pivot installation arch, second pivot installation arch, the inner cartridge of first pivot in the bellied blind hole of first pivot installation, the outer end side of first pivot is protruding to be set up, the one end cartridge of second pivot in behind the bellied guiding hole of second pivot installation, both ends are all protruding to be inclining, the orientation of second pivot the bellied one end cover of first pivot installation is equipped with the main part of torsional spring, the suit structure of valve includes that the fixed centre gripping suit of the rotatory suit arch of one side, opposite side is protruding, the bellied locating hole suit of rotatory suit in the outer end of first pivot, the bellied indent buckle of fixed centre gripping suit is carried keeping away from of second pivot the one end of first pivot.

3. A novel one-way valve as defined in claim 2, wherein: the sleeving structure of the valve further comprises a middle stopping and positioning protrusion, the stopping and positioning protrusion corresponds to one end, close to the first rotating shaft, of the second rotating shaft, and a stopping plate is arranged at the corresponding end of the second rotating shaft and is limited through the stopping plate.

4. A novel one-way valve as defined in claim 1, wherein: the main structure material of the valve is PA66 and 33% glass fiber, the valve has the characteristics of high strength, high and low temperature resistance and oil corrosion resistance, and the valve sealing element is made of fluorine silicon rubber material.

5. A new type of one-way valve, as defined in claim 1 or 4, characterized in that: the valve seal and the body structure are combined into a single part by means of encapsulation.

6. A novel one-way valve as defined in claim 1, wherein: and an upper convex stopping flange is arranged on the installation periphery of the non-rotating shaft structure of the valve body corresponding to the outlet surface area.

7. A novel one-way valve as defined in claim 1, wherein: the valve body main structure of the valve body is made of POM and has low permeability, the valve body shell of the valve body is made of HDPE and is easily welded with an oil tank, and the valve body main structure and the valve body shell are integrally molded through rubber coating in a secondary injection molding mode.

Technical Field

The invention relates to the technical field of one-way valves, in particular to a novel one-way valve.

Background

With the implementation of the national six-emission regulation, the emission test limit of evaporative pollutants is greatly tightened (from national five 2g/test to 0.7g/test), and more strict performance requirements are provided for all systems and parts of the whole vehicle. The performance requirements of the fuel system related parts are also correspondingly increased.

The check valve is an important part of a fuel system and has the main function of connecting a filler pipe and a fuel tank. For the check valve for the plastic oil tank, the six-wheel type in China has the requirements on low permeability and good sealing property. The method for solving the low permeability in the market at present is that a two-color injection molding process is selected for a valve body of a one-way valve, so that the selected material and process have high requirements, the cost is high, and the risk of permeability is caused by the influence of the process; the sealing performance is improved by realizing better sealing reliability by assembling the valve and the supporting arm, the assembling mode of the supporting arm is more complex, and the cost of the whole structure is high.

Disclosure of Invention

Aiming at the problems, the invention provides a novel one-way valve which is simple in structure, low in permeability, good in sealing performance and low in manufacturing cost.

A novel check valve is characterized in that: the valve comprises a valve body and a valve, wherein the valve is arranged on the position of an outlet surface area of the valve body in a covering manner, one side of the periphery of the outlet surface area of the valve body is provided with a rotating shaft mounting protrusion with two convex sides, the outer ring part of a rotating shaft structure is sleeved with a torsion spring, the rotating shaft structure is inserted in the rotating shaft mounting protrusion and freely rotates, the position of the valve corresponding to the rotating shaft structure is provided with a convex sleeving structure, at least one sleeving structure of the valve is fixedly sleeved at one end of the rotating shaft structure, the torsion spring is preset with pretightening force before the valve is mounted, one end of the torsion spring is abutted against the corresponding outer wall of the valve body, the other end of the torsion spring presses the upper surface of the valve, the lower surface of the main structure of the valve is fixedly provided with a valve sealing element, the valve sealing element of the torsion spring driving the valve presses the periphery of the, The outside is used for connecting the valve body shell of oil tank, valve body major structure and valve body shell pass through rubber coating integrated into one piece.

It is further characterized in that:

the rotating shaft structure comprises a first rotating shaft and a second rotating shaft, the rotating shaft mounting protrusion comprises a first rotating shaft mounting protrusion and a second rotating shaft mounting protrusion, the inner end of the first rotating shaft is inserted into the blind hole of the first rotating shaft mounting protrusion, the outer end of the first rotating shaft is arranged in a convex manner, one end of the second rotating shaft is inserted into the guide hole of the second rotating shaft mounting protrusion, and then both ends of the second rotating shaft are convex;

the sleeving structure of the valve further comprises a middle stopping and positioning bulge, a stopping plate is arranged at one end, close to the first rotating shaft, of the stopping and positioning bulge, corresponding to the second rotating shaft, and the corresponding end of the second rotating shaft is limited through the stopping plate;

the main structure material of the valve is PA66 and 33% glass fiber, the valve has the characteristics of high strength, high and low temperature resistance and oil corrosion resistance, and the valve sealing element is a fluorine silicon rubber material;

the valve sealing element and the main structure are combined into a single part in a rubber coating mode, so that later assembly is facilitated;

an upper convex stopping flange is arranged on the installation periphery of the non-rotating shaft structure of the valve body corresponding to the outlet surface area, so that the oil is ensured to flow out in a guiding way;

the valve body main structure of the valve body is made of POM and has low permeability, the valve body shell of the valve body is made of HDPE and is easily welded with an oil tank, and the valve body main structure and the valve body shell are integrally molded through rubber coating in a secondary injection molding mode.

After the structure of the invention is adopted, the torsion spring provides an initial sealing pressure for the valve, and the valve is pressed on the valve body to play a sealing role. In the refueling process, fuel with a certain flow enters the valve body and then the valve is opened; the opening and closing angle of the valve is automatically adjusted along with the flow in the oiling process; after refueling is finished, the valve automatically closes and seals under the action of the torsion force of the torsion spring, so that fuel inside the fuel tank can be effectively prevented from flowing backwards to the outside, and the problem of oil leakage is avoided; and because valve body major structure and valve body shell pass through rubber coating integrated into one piece, valve seal spare and valve pass through the mode combination of rubber coating and become single part, its simple structure has the hyposmosis, and the leakproofness is good, the cost of manufacture is low.

Drawings

FIG. 1 is a perspective diagrammatic illustration of the present invention;

FIG. 2 is a schematic perspective exploded view of the valve body of the present invention;

FIG. 3 is a schematic diagram of a three-dimensional explosion structure of the valve of the present invention;

FIG. 4 is a schematic perspective view of the torsion spring of the present invention;

the names corresponding to the sequence numbers in the figure are as follows:

valve body 10, valve body main body structure 11, first rotating shaft 111, second rotating shaft 112, first rotating shaft mounting protrusion 113, second rotating shaft mounting protrusion 114, upper stop flange 115 and valve body shell 12

Valve 20, main structure 21, rotary sleeve protrusion 211, fixed clamping sleeve protrusion 212, middle stop positioning protrusion 213, stop plate 214 and valve sealing member 22

Torsion spring 30, one end 301, the other end 302, main body portion 303.

Detailed Description

A novel one-way valve, as shown in fig. 1-4: the valve comprises a valve body 10 and a valve 20, wherein the valve 20 is arranged on the position of an outlet surface area of the valve body 10 in a covering manner, a rotating shaft mounting protrusion with two convex sides is arranged on one side of the periphery of the outlet surface area of the valve body 10, a torsion spring 30 is sleeved on an outer ring part of a rotating shaft structure, the rotating shaft structure is inserted in the rotating shaft mounting protrusion and freely rotates, a convex sleeving structure is arranged on the position, corresponding to the rotating shaft structure, of the valve 20, at least one sleeving structure of the valve 20 is fixedly sleeved at one end of the rotating shaft structure, a pretightening force is preset before the valve 20 is mounted on the torsion spring 30, one end 301 of the torsion spring 30 abuts against the corresponding outer wall of the valve body 10, the other end 302 of the torsion spring 30 is pressed and attached to the upper surface of the valve 20, a valve sealing element 22 is fixedly arranged on the lower surface of a main body structure 21 of the, The outer part is used for connecting a valve body shell 12 of an oil tank, and the valve body main structure 11 and the valve body shell 12 are integrally formed through rubber coating.

The rotating shaft structure comprises a first rotating shaft 111 and a second rotating shaft 112, the rotating shaft mounting protrusions comprise a first rotating shaft mounting protrusion 113 and a second rotating shaft mounting protrusion 114, the inner end of the first rotating shaft 111 is inserted into a blind hole of the first rotating shaft mounting protrusion 113, the outer end of the first rotating shaft 111 is arranged in a protruding mode, one end of the second rotating shaft 112 is inserted into a guide hole of the second rotating shaft mounting protrusion 114, the two ends of the second rotating shaft 112 are both arranged in a protruding mode, one end, facing the first rotating shaft mounting protrusion 113, of the second rotating shaft 112 is sleeved with a main body portion 303 of a torsion spring 30, the sleeving structure of the valve 20 comprises a rotating sleeving protrusion 211 on one side and a fixing clamping sleeving protrusion 212 on the other side, a positioning hole of the rotating sleeving protrusion 211 is sleeved on the outer end of the first rotating shaft 111, and an inner concave groove buckle of the fixing clamping sleeving protrusion 212 clamps one;

the sleeving structure of the valve 20 further includes a middle stop positioning protrusion 213, one end of the stop positioning protrusion 213, which is close to the first rotating shaft 111, corresponding to the second rotating shaft 112 is provided with a stop plate 214, and the corresponding end of the second rotating shaft 112 is limited by the stop plate 214;

the main structure 21 of the valve 20 is made of PA66 and 33% glass fiber, which has the characteristics of high strength, high and low temperature resistance and oil corrosion resistance, and the valve sealing member 22 is made of fluorosilicone rubber material;

the valve sealing element 22 and the main structure 21 are combined into a single part in a rubber coating mode, so that later assembly is facilitated;

an upper convex stopping flange 115 is arranged on the installation periphery of the non-rotating shaft structure of the valve body 10 corresponding to the outlet surface area, so that the oil is ensured to flow out in a guiding way;

the valve body main structure 11 of the valve body 10 is made of POM (polyoxymethylene) and has low permeability, the valve body shell 12 of the valve body 10 is made of HDPE and is easy to weld with an oil tank, and the valve body main structure 11 and the valve body shell 12 are integrally molded through encapsulation in a secondary injection molding mode.

The working principle is as follows: the torsion spring provides an initial sealing pressure for the valve, and the valve is pressed on the valve body to play a sealing role. In the refueling process, fuel with a certain flow enters the valve body and then the valve is opened; the opening and closing angle of the valve is automatically adjusted along with the flow in the oiling process; after refueling is finished, the valve automatically closes and seals under the action of the torsion force of the torsion spring, so that fuel inside the fuel tank can be effectively prevented from flowing backwards to the outside, and the problem of oil leakage is avoided; and because valve body major structure and valve body shell pass through rubber coating integrated into one piece, valve seal spare and valve pass through the mode combination of rubber coating and become single part, its simple structure has the hyposmosis, and the leakproofness is good, the cost of manufacture is low.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.