CN110566700A

CN110566700A - slope discharge valve

Info

Publication number: CN110566700A
Application number: CN201910978217.2A
Authority: CN
Inventors: 周彪; 孙红明; 刘鹏
Original assignee: Stende Automotive Systems Suzhou Co Ltd
Current assignee: Stende Automotive Systems Suzhou Co Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2019-12-13
Anticipated expiration: 2039-10-15
Also published as: CN110566700B

Abstract

The invention discloses a gradient exhaust valve which comprises an outer cover, wherein a protruding part is integrally formed on the top of the outer cover, a groove is formed in the protruding part, an exhaust hole is formed in the middle of the groove, an overhead valve is arranged in the groove, the exhaust hole is opposite to an air vent structure, the air vent structure is arranged on the top of a floater, the bottom of the floater is connected with a spring retainer arranged at the bottom of the outer cover through a spring, the floater is arranged in the outer cover, and an exhaust port is formed in the outer cover. The invention provides a high-flow exhaust valve, which adopts an enlarged exhaust channel, meets the requirement of large-flow exhaust under certain conditions by enlarging the exhaust channel, and simultaneously ensures smooth gun jump in the refueling process.

Description

slope discharge valve

Technical Field

The invention relates to the technical field of exhaust valves, in particular to a gradient exhaust valve.

Background

The slope exhaust valve is used as a main functional part for exhausting in the oiling and running standing states of an oil tank system of a vehicle, and the smoothness of exhaust and the sealing performance under special conditions need to be ensured under various working conditions. In the process of refueling, the main exhaust passage is an FLV (Fuel Limit Valve), and a GRV (Grade Rollover Valve slope exhaust Valve) is used as an auxiliary exhaust passage, so that the ventilation volume cannot be too large in the refueling process, otherwise, gun jumping cannot be easily caused, and excessive refueling is easily caused. However, after the fuel tank is filled with the fuel, the GRV is used as the only exhaust channel in the fuel tank and cannot be too small, otherwise, the small exhaust channel cannot exhaust timely along with more fuel steam in a high-temperature state in summer and the running process of a vehicle, so that the pressure in the fuel tank is increased rapidly, and great safety risk exists. In addition, when the vehicle runs, oil in the oil tank shakes greatly, small liquid drops easily enter a pipeline through a GRV exhaust channel which is always open, so that the pipeline is blocked, the load of the carbon tank is increased, and even the carbon tank is caused to lose efficacy.

Therefore, in order to overcome the disadvantages and drawbacks of the prior art, the present invention provides a grade exhaust valve,

disclosure of Invention

the invention aims to provide a gradient exhaust valve.

the invention is realized by the following technical scheme:

The utility model provides a slope discharge valve, includes the dustcoat, the top integrated into one piece of dustcoat has a bellying, be provided with a recess on the bellying, and the middle part of recess is provided with the exhaust hole, be provided with the overhead valve in the recess, the exhaust hole is just to setting up with ventilation structure, ventilation structure sets up the top at the float, the spring holder of spring coupling setting in the dustcoat bottom is passed through to the bottom of float, place in the float in the dustcoat, be provided with the gas vent on the dustcoat.

Technical scheme more than adopting, be provided with float shell parcel float between dustcoat and the float, and be provided with outside gas vent and inside gas vent on dustcoat and the float shell respectively.

technical scheme more than adopting, outside gas vent and inside gas vent stagger the setting, and outside gas vent and inside gas vent set up relatively.

According to the technical scheme, the ventilation structure is arranged on the boss at the top of the floater, and the ventilation structure is arranged between the boss and the exhaust hole formed in the protruding portion.

According to the technical scheme, the ventilation structure comprises a first-stage opening hole and a second-stage opening hole, and the first-stage opening hole and the second-stage opening hole are overlapped to form a double-hole structure.

By adopting the technical scheme, the area of the first-stage opening hole is smaller than that of the second-stage opening hole.

By adopting the technical scheme, the groove is provided with at least one thin flow hole at the position of the exhaust hole so as to maintain the pressure balance in the oil tank.

According to the technical scheme, the bottom of the protruding portion is provided with the annular groove, and the annular groove is internally provided with the O-shaped sealing ring.

By adopting the technical scheme, a seal is arranged between the boss of the floater and the floater.

The invention has the beneficial effects that:

1. The invention adopts the exhaust passage which is arranged in an enlarged way, meets the requirement of large-flow exhaust under certain conditions by increasing the exhaust passage, and simultaneously ensures that the gun jumps smoothly in the refueling process;

2. According to the invention, the external exhaust port and the internal exhaust port are arranged in a staggered and opposite manner, so that liquid entering from the external exhaust port can really enter the internal exhaust port only through 180-degree steering, and the liquid can fall back to the bottom of the exhaust valve due to gravity, thereby effectively reducing dynamic leakage;

3. the vent holes of the exhaust channel are overlapped by two holes, the area of the first-stage opening hole is smaller than that of the second-stage opening hole, the floater is easier to open so as to start exhaust, and the second-stage opening hole is opened along with the gradual reduction of pressure so as to realize large-flow exhaust and rapid pressure relief.

drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a left side view of fig. 1.

fig. 4 is a top view of fig. 1.

3 fig. 3 5 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 of 3 fig. 3 4 3. 3

fig. 6 is a partially enlarged view of the upper portion B of fig. 5.

Fig. 7 is another schematic structural diagram of the present invention.

Fig. 8 is a front view of fig. 7.

Fig. 9 is a top view of fig. 7.

Wherein:

1. A housing;

11. a boss portion;

111. A groove;

112. a fine flow orifice;

113. an annular groove;

12. An external exhaust port;

2. An exhaust hole;

3. An overhead valve;

4. A float;

41. A boss;

5. a venting structure;

51. A first-stage opening hole;

52. Opening the hole in the second stage;

6. a spring;

7. A spring retainer;

8. a float housing;

81. An internal exhaust port;

9. an O-shaped sealing ring;

10. A seal is provided.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

the slope exhaust valve shown in fig. 1 to 9 comprises an outer cover 1, a protruding portion 11 is integrally formed at the top of the outer cover 1, a groove 111 is formed in the protruding portion 11, an exhaust hole 2 is formed in the middle of the groove 111, an overhead valve 3 is arranged in the groove 111, the exhaust hole 2 is opposite to a ventilation structure 5, the ventilation structure 5 is arranged at the top of a floater 4, the bottom of the floater 4 is connected with a spring retainer 7 arranged at the bottom of the outer cover 1 through a spring 6, the floater 4 is arranged in the outer cover 1, and an exhaust port is formed in the outer cover 1.

in the embodiment, a float shell 8 is arranged between the outer cover 1 and the float 4 to wrap the float 4, and an external air outlet 12 and an internal air outlet 81 are respectively arranged on the outer cover 1 and the float shell 8;

more specifically, in the process of driving, the oil in the oil tank shakes very greatly, small liquid beads can easily enter a pipeline through a GRV exhaust channel which is always open, so that the pipeline is blocked, the load of a carbon tank is increased, and even the carbon tank fails, secondly, in the process of driving, along with the shaking of the liquid level, the oil enters the interior of the GRV, a floater of the GRV can be lifted by the oil to be closed instantly, and along with the outflow of the liquid, the floater falls back again, but during the period, the pressure in the oil tank can be raised for a short time, so that the GRV can be required to be reopened in time, therefore, in order to solve the problem, the external exhaust port 12 and the internal exhaust port 81 are arranged in a staggered mode, and the external exhaust port 12 and the internal exhaust port 81 are arranged oppositely, so that the liquid entering from the external exhaust port 12 can not directly enter the exhaust valve through the internal exhaust port, but rather a 180 degree turn is required to enter the interior of the exhaust valve through the interior exhaust port 81;

Even there is liquid to get into through outside gas vent 12, but need through the inside that 180 degrees turned to could really get into discharge valve through inside gas vent 81, at this flow in-process, liquid because gravity can fall back to discharge valve bottom, and then get back to in the oil tank, very big reduction liquid pass through the gas vent and get into in the pipeline to reach the purpose that reduces the dynamic leakage.

In the present embodiment, the ventilation structure 5 is disposed on the boss 41 on the top of the float 4, and the ventilation structure 5 is disposed between the boss 41 and the exhaust hole 2 included in the boss 11;

More specifically, GRV is used as an auxiliary exhaust channel, the ventilation volume cannot be too large in the oiling process, otherwise, the problem that gun jump cannot be easily caused is caused, and after the oil tank is filled with oil, the normally-opened GRV is used as the only exhaust channel in the oil tank and cannot be too small, otherwise, in the high-temperature state in summer and the vehicle driving process, along with more fuel steam, the small exhaust channel cannot exhaust timely, the pressure in the oil tank is easily and rapidly increased, and a great safety risk exists, so in order to solve the problem, the ventilation structure 5 comprises a primary opening hole 51 and a secondary opening hole 52, the primary opening hole 51 and the secondary opening hole 52 are overlapped to form a double-hole structure, and the area of the primary opening hole 51 is smaller than that of the secondary opening hole 52;

Under the same pressure effect, namely the pressure intensity is the same, according to F ═ PS, because the pressurized area of first-level opening hole 51 is less, consequently float 4 opens more easily to begin the exhaust, along with gaseous discharge, the pressure effect descends gradually, namely pressure intensity reduces, second-level opening hole 52 opens and ventilates in order to realize large-traffic, can reach the effect of quick pressure release, can effectively solve GRV and lead to the problem that the pressure sharply rises in the oil tank because of the exhaust flow is little, greatly reduced the potential safety hazard.

in the present embodiment, the groove 111 is provided with at least one thin flow hole 112 at the position of the exhaust hole 2 to maintain the pressure balance in the oil tank;

more specifically, increase trickle hole 112 and maintain the pressure balance in the oil tank, reduce the flow of oil vapor to the carbon tank, reduce the load of carbon tank, extension carbon tank life.

In this embodiment, the bottom of the protruding portion 11 is provided with an annular groove 113, an O-ring 9 is disposed in the annular groove 113, and a seal 10 is disposed between the boss 41 of the float 4 and the float 4, so that the O-ring 9 and the seal 10 have good sealing effects.

the invention has the beneficial effects that: the invention provides a high-flow exhaust valve, which adopts an enlarged exhaust channel, meets the requirement of large-flow exhaust under certain conditions by enlarging the exhaust channel, and simultaneously ensures smooth gun jump in the refueling process.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A slope discharge valve which characterized in that: the air exhaust device comprises an outer cover, the top integrated into one piece of outer cover has a bellying, be provided with a recess on the bellying, and the middle part of recess is provided with the exhaust hole, be provided with the overhead valve in the recess, the exhaust hole is just to setting up with air-passing structure, air-passing structure sets up the top at the float, the spring holder of spring coupling setting in the dustcoat bottom is passed through to the bottom of float, place in the float in the dustcoat, be provided with the gas vent on the dustcoat.

2. a grade exhaust valve according to claim 1 wherein: a floater shell is arranged between the outer cover and the floater to wrap the floater, and an external exhaust port and an internal exhaust port are respectively arranged on the outer cover and the floater shell.

3. A grade exhaust valve according to claim 2 wherein: the outside gas vent sets up with inside gas vent stagger, and outside gas vent and inside gas vent set up relatively.

4. a grade exhaust valve according to claim 1 wherein: the vent structure is arranged on a boss at the top of the floater, and the vent structure is arranged between the boss and the vent hole contained in the boss.

5. The grade exhaust valve of claim 4 wherein: the ventilation structure comprises a first-stage opening hole and a second-stage opening hole, and the first-stage opening hole and the second-stage opening hole are overlapped to form a double-hole structure.

6. the grade exhaust valve of claim 5 wherein: the area of the first-stage opening hole is smaller than that of the second-stage opening hole.

7. a grade exhaust valve according to claim 1 wherein: the groove is provided with at least one fine flow hole at the position of the exhaust hole so as to maintain pressure balance in the oil tank.

8. A grade exhaust valve according to claim 1 wherein: the bottom of the bulge is provided with an annular groove, and an O-shaped sealing ring is arranged in the annular groove.

9. A grade exhaust valve according to claim 1 wherein: and a seal is arranged between the boss of the floater and the floater.