CN201401250Y - Activated carbon pot one-way valve - Google Patents
Activated carbon pot one-way valve Download PDFInfo
- Publication number
- CN201401250Y CN201401250Y CN2009201312518U CN200920131251U CN201401250Y CN 201401250 Y CN201401250 Y CN 201401250Y CN 2009201312518 U CN2009201312518 U CN 2009201312518U CN 200920131251 U CN200920131251 U CN 200920131251U CN 201401250 Y CN201401250 Y CN 201401250Y
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- China
- Prior art keywords
- steel ball
- valve body
- seat
- activated carbon
- way valve
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- Expired - Lifetime
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Abstract
The utility model relates to an activated carbon pot one-way valve which comprises a valve body, a spring and a steel ball, wherein the valve body is a cylinder with an axial through cavity, one end of the valve body is provided with a steel ball seat, the other end is provided with a spring seat, the steel ball seat is provided with a locating steel ball and a central through hole which simultaneously plays the role of allowing airflow to pass through, gas can be sealed when the end portion of the central through hole is contacted with the steel ball, one end of the spring is connected with the spring seat, the other end of the spring is supported on the steel ball, a or a plurality of grooves which extend toward one end of the spring seat along the axial direction of the valve body are arranged on the inner wall of the through cavity of the valve body, and the distance from the starting end of the groove to the nearest end surface of the steel ball seat is smaller or equal to the distance from the ball center of the steel ball to the nearest end surface of the steel ball seat. Circulating cross-section area of airflow in the valve body is increased through arranging the groove, thereby airflow can more easily pass through, and air pressure in an oil tank can be adjusted in time to be normal and kept in a normal range as soon as possible.
Description
Technical field
The utility model relates to a kind of activated carbon canister one-way valve.
Background technique
As everyone knows, gasoline has the characteristic that is easy to volatilize, especially in ambient temperature than under the condition with higher.So in present automotive oil tank, often abrim the volatilization gas spirit.If gas spirit is too much, will cause the air pressure in the petrol tank excessive, excessive air pressure can bring serious threat to fuel tank, and the possibility of bursting the fuel tank weld seam is arranged.In order to prevent that gas spirit too much causes the excessive safety to petrol tank of air pressure in the petrol tank to threaten in the petrol tank, generally adopt specific pipeline that the gas spirit in the petrol tank is drawn and is stored in the activated carbon canister.Certainly draw gas spirit and be air pressure in fuel tank and reach under the situation of a numerical value of setting and just carry out, when less than this numerical value, just can not draw the gas spirit in the fuel tank.
The general mobility status that adopts one-way valve to control the gas spirit in the fuel tank in the reality, one-way valve is installed in the pipeline of connecting petrol tank and activated carbon canister.As shown in Figure 1, vertical profile schematic representation for a kind of one-way valve of available technology adopting, this one-way valve comprises the cylinder valve body 31 with an axial cavity 34, valve body 31 1 ends are provided with steel ball seat 35, the other end is provided with spring seat 36, steel ball 33 place on the steel ball seat 35 respectively with spring 32 and spring seat 36 on, and spring 32 1 ends are resisted against on the steel ball 33, the through hole 351 that steel ball seat 35 is provided with locking ball 33 and allows air communication cross also is provided with the through hole 361 that air feed stream passes through on the spring seat 36.As shown in Figure 2, be the activated carbon canister 39 that adopts above-mentioned one-way valve, when the air pressure in the petrol tank during greater than the spring pressure sum of air pressure in the activated carbon canister 39 and one-way valve 311, spring in this one-way valve 311 is compressed, and the steel ball in this one-way valve 311 moves down, thereby utilize through hole and the through hole on the spring seat on the steel ball seat of this one-way valve 311 to connect fuel tank inner chamber and activated carbon canister inner chamber 391, make gas in the fuel tank escape in the activated carbon canister 39 and absorbed by the active carbon in the activated carbon canister; Another same one-way valve 312 also is housed on activated carbon canister 39, its effect is, when the air pressure in the petrol tank too small and when forming negative pressure, thereby the steel ball in the pushing of the air pressure in the activated carbon canister 39 one-way valve 312 compresses this one-way valve 312 medi-springs, open one-way valve 312, and then make atmosphere enter the pressure that replenishes in the petrol tank in the petrol tank, the pressure in the petrol tank is remained in the normal scope.Generally speaking, above-mentioned one-way valve satisfies usage requirement substantially, but the distance between the inwall of the cavity 34 of its steel ball 33 and valve body 31 is too little, it is very little to leave the cross-section area that gas passes through for, when the pressure in the fuel tank increases very fast (perhaps the pressure in the fuel tank reduces too fast), gas in the petrol tank just can not be discharged to (perhaps the atmosphere in the activated carbon canister can not in time replenish the air pressure in the petrol tank) in the activated carbon canister timely, and the air pressure in the assurance petrol tank that can not be very fast returns in the normal scope, thereby the safety of oil dropping apparatus structure is brought threat.Also have and this is made improved, as increasing the diameter of valve body cavity, perhaps reduce the diameter of steel ball, thereby increase the cross-section area that air feed stream passes through, but the problem of bringing thus is poorly sealed.Be badly in need of a kind of cross-section area that can guarantee that enough air feed stream passes through thus, and the activated carbon canister one-way valve with excellent sealing performance.
The model utility content
Problem to be solved in the utility model is, under the prerequisite that guarantees activated carbon canister one-way valve sealability, and the cross-section area that air feed stream passes through in the one-way valve when being increased in one-way valve opens.
The technological scheme that the utility model adopted is, a kind of activated carbon canister one-way valve, comprise valve body, spring, steel ball, described valve body is the cylindrical body with axial cavity, valve body one end forms steel ball seat, steel ball seat is provided with central through bore, described central through bore promptly plays locking ball, playing again simultaneously allows air communication cross effect, the valve body the other end is provided with spring seat, spring seat is provided with the spring seat central through bore that air feed stream passes through, steel ball seat is provided with locking ball and plays again simultaneously and allow air communication cross the central through bore of effect, spring one end is connected with spring seat, its the other end is resisted against on the steel ball, steel ball is positioned at the cavity of valve body and can forms contact seal with central through bore one end of steel ball seat, spring one end is connected with spring seat, its the other end is resisted against on the steel ball, spring seat is provided with the spring seat central through bore that air feed stream passes through, it is characterized in that, the cavity inwall of valve body is provided with the one or more of grooves that axially extend to spring seat one end along valve body, and the starting point of described groove is less than or equal to the distance of the centre of sphere of steel ball to the nearest end end face of steel ball seat to the distance of the nearest end end face of steel ball seat.
By on valve body cavity wall, groove being set, when steel ball is boosted by air pressure and is mobile, part air-flow passes through from steel ball and the original gap of valve body cavity wall, another part air-flow then passes through from groove, thereby groove has increased the cross-section area that air feed stream passes through, make air-flow from the check valve body cavity, pass through faster, thereby under the situation that guarantees sealing, increased the cross-section area that air feed stream passes through; When fitting tightly, the through hole end on groove and the steel ball seat then plays seal action.
As preferably, described groove extends to the exterior edge face of mounting spring seat one end of valve body always.
By the end of groove is extended to the end face of valve body always, can guarantee no matter how many steel balls moves up apart from playing the effect that increases the airflow cross section.
As preferably, the degree of depth of described groove is along with groove extends and increases gradually to spring seat one end.
By increasing the degree of depth of groove gradually, then the distance that its pushing steel ball moves when air pressure is excessive will be bigger, just needs bigger air communication to cross cross-section area in such cases, and air-flow is easier to be passed through thereby make.The degree of depth that increases groove has gradually just in time satisfied these needs, more close to spring seat one end, the degree of depth of groove is just big more, and the cross-section area that the air feed stream that provides passes through is just big more, thereby make under the situation of air pressure too much (perhaps excessive negative air pressure), the air pressure in the petrol tank is can very fast recovery normal.
As preferably, the edge that described steel ball seat contacts with steel ball is formed with the straight line chamfering.
Form the straight line chamfering at the edge that steel ball seat contacts with steel ball, more help the stability of the position of steel ball when its seal action, also just guaranteed the stability of sealing.
As preferably, the position that described steel ball seat contacts with steel ball is formed with the concave arc chamfering, and the radius of described concave arc equates with the radius of steel ball.
Form the concave arc chamfering by the position that contacts with steel ball in steel ball seat, and make the radius of concave arc equate with the radius of steel ball, thereby make that steel ball and contacting between steel ball is done are the face contact, not only guarantee the stability of steel ball position, and farthest guaranteed the stability of sealing.
Description of drawings
Fig. 1 is an activated carbon canister one-way valve vertical profile schematic representation commonly used in the prior art;
Fig. 2 is the vertical profile schematic representation that the activated carbon canister of activated carbon canister one-way valve shown in Figure 1 is housed;
Fig. 3 is a kind of embodiment's of the utility model activated carbon canister one-way valve a vertical profile schematic representation;
Fig. 4 is the A-A cross-sectional schematic among Fig. 3;
Fig. 5 is the another kind of embodiment's vertical profile of a utility model canister one-way valve schematic representation;
Fig. 6 is the activated carbon canister vertical profile schematic representation that activated carbon canister one-way valve shown in Figure 3 is housed;
Fig. 7 is the another kind of embodiment's vertical profile of a utility model activated carbon canister one-way valve schematic representation;
Fig. 8 is the another kind of embodiment's vertical profile of a utility model activated carbon canister one-way valve schematic representation;
Fig. 9 is the another kind of embodiment's vertical profile of a utility model activated carbon canister one-way valve schematic representation;
Figure 10 is the another kind of embodiment's vertical profile of a utility model activated carbon canister one-way valve schematic representation.
Embodiment
As shown in Figure 3, vertical profile schematic representation for a kind of embodiment of the utility model activated carbon canister one-way valve, comprise valve body 1, spring 2, steel ball 3, the profile of valve 1 body is a cylindrical body, it has an axial cavity 4, one end of valve body 1 forms an end cap with central through bore 51, and this end cap is steel ball seat 5, and described steel ball seat 5 forms one with valve body 1; The other end of valve body 1 is provided with spring seat 6, spring seat 6 links to each other with valve body 1, spring seat 6 is provided with the spring seat central through bore 61 that air feed stream passes through, spring 2 and steel ball 3 all are positioned at the cavity 4 of valve body 1, when one-way valve is in sealing state for opening, steel ball 3 contacts with central through bore 51 1 ends of steel ball seat 5, and under the elastic force effect of spring 2, steel ball 3 and central through bore should end formation fit tightly and play a part sealing gas; Spring 2 one ends are connected with spring seat 6, spring 2 the other ends are resisted against on the steel ball 3,2 pairs of steel balls 3 of spring have the thrust of certain pretension, steel ball 3 is close on the end of through hole 51 of steel ball seat 5, gas just can not be by the through hole 51 on the steel ball seat 5 when steel ball 3 was close on the end of through hole 51 of steel ball seat 5, and this moment, steel ball 3 just played a part sealing; On the inwall of the cavity 4 of valve body 1, be provided with the groove 7 that extends vertically, this groove 7 extends to an end of valve body 1 mounting spring seat 6 from beginning near the end face somewhere of steel ball seat 5 always, wherein, the initial position of groove 7 is less than or equals the distance of the centre of sphere of steel ball 3 to steel ball seat 5 nearest end end faces to the distance of a nearest end end face of steel ball seat 5, preceding sentence when described in a nearest end end face be meant that end face that is positioned at cavity 4 of steel ball seat 5.
The purpose that groove 7 is set is the cross-section area for air feed stream circulation in the cavity 4 that increases valve body 1, when gas promotes steel ball 3 along the moving axially of valve body 1, gap between cavity 4 inwalls of steel ball 3 and valve body 1 does not change, but because the existence of groove 7, then groove 7 bottoms are to there being certain clearance to exist between cavity 4 inwalls of valve body 1, this part gap has increased the cross-section area that air feed stream passes through just, as shown in Figure 4, be the A-A sectional view among Fig. 3, can find out clearly that by figure set groove 7 has increased the cross-section area that air feed stream passes through between valve body and the steel ball.The shape of cross section of groove 7 can design according to actual needs, and as circular arc, triangle, rectangle etc., the cross section of groove 7 is a circular arc as shown in Figure 4.
Fig. 3 and activated carbon canister one-way valve shown in Figure 4 are provided with two grooves 7, one or more of grooves 7 can certainly be set, the activated carbon canister one-way valve just only is provided with one as shown in Figure 7 increases the groove 7 that air communication is crossed cross-section area, and can play equally increases the effect that air communication is crossed cross-section area.For groove 7 valve body 1 axially on axial length, should be according to generally the displacement distance of steel ball 3 and the structural strength of valve body 1 are considered, the end of groove 7 should surpass the highest distance position place that steel ball 3 generally moves to, the groove 7 of one-way valve shown in the accompanying drawing 3 has extended to the end of valve body 1 always, certainly is fine under the situation that the intensity of valve body 1 meets the demands; If the intensity of valve body 1 is less, the end that groove 7 then can be set gets final product in the highest distance position place or the more a little distance of steel ball motion, can deal with on the merits of each case according to actual conditions.Generally, the maximum distance of steel ball motion can not surpass 1/3rd length of valve body 1, so as long as the tail end of groove 7 surpasses valve body 1 apart from the distance of steel ball seat 1/3rd length are set.
As shown in Figure 5, vertical profile schematic representation for the another kind of embodiment of the utility model activated carbon canister one-way valve, the starting point of its further groove has put in the inside of steel ball seat 5 always to the extension of steel ball seat 5 one ends, on steel ball seat 5, formed aperture 52, the shape of cross section of aperture 71 is consistent with the shape of cross section of groove (7), described aperture 52 does not pass steel ball seat 5 and forms through hole, but has the blind hole of certain axial depth.
As shown in Figure 9, vertical profile schematic representation for the another kind of embodiment of the utility model activated carbon canister one-way valve, the starting point of its further groove 7 is positioned at the somewhere away from the interior edge face of steel ball seat 5, and the end of groove 7 does not extend to the end of valve body, but end in inner chamber upper half part somewhere of valve body 1, so structure also can increase the effect that air communication is crossed cross-section area, because as long as steel ball moves axially, valve body lower end will conducting so, and air-flow will enter into groove or flow to through hole 51 from groove through steel ball seat through hole 51; The axially movable distance of steel ball generally can not surpass 1/3rd of valve body 1 length, so steel ball generally is the terminal cut off point that can not arrive groove, increases the effect that air communication is crossed cross-section area so this groove 7 can play equally.
As shown in Figure 6, for the activated carbon canister vertical profile schematic representation of activated carbon canister one-way valve shown in Figure 3 is housed, wherein this activated carbon canister is equipped with two one-way valves (11,12), the structure of these two one-way valves (11,12) is consistent with the structure of one-way valve shown in Figure 3, thereby form two-way valve with two-way ventilatory function, wherein the one-way valve 11 on the left side is used for the inner chamber 91 of gas from activated carbon canister 9 is delivered in the fuel tank, and the one-way valve 12 on the right is used for gas is delivered in the fuel tank inner chamber 91 of activated carbon canister 9.When the gasoline of the volatilization in the fuel tank too much or other reasons and when causing that the fuel tank internal air pressure is excessive, gas in the fuel tank will be in pipeline 13 enters the upper chamber 14 of activated carbon canister 9, thereby the steel ball of pushing the right one-way valve 11, this steel ball is moved down, opened the through hole of the right one-way valve upper steel ball seat, thereby the inner chamber 91 that has been communicated with fuel tank inner chamber and activated carbon canister 9, overvoltage gas in the fuel tank is just from pipeline 13, steel ball seat through hole through the right one-way valve, from the check valve body inner chamber of the right, flow to the spring seat of the right one-way valve then in the gap of steel ball and valve body between the walls and the groove, after spring base hole and groove enter into the inner chamber 91 of activated carbon canister 9, from making the overvoltage gas in the fuel tank enter in the activated carbon canister 9, thereby reduced air pressure in the fuel tank; On the contrary, when being formed with negative pressure in the fuel tank, be that air pressure in the fuel tank is during less than the barometric pressure of external environment, gas in the activated carbon canister 9 just can promote the one-way valve 12 on the left side, the one-way valve 12 on the left side is got through, gas in the activated carbon canister 9 is entered in the fuel tank, guaranteed that the interior stable gas pressure of fuel tank is in normal scope.When the air pressure in the fuel tank was in the normal range (NR), left and right one-way valve (11,12) all was in the hermetically closing state, and at this moment, the steel ball of left and right one-way valve (11,12) all is close on separately the steel ball seat.
As shown in Figure 8, be the another kind of embodiment's activated carbon canister of the utility model one-way valve vertical profile schematic representation, the degree of depth of groove 7 is along with groove 7 extends and increases gradually to spring seat 6 one ends.The degree of depth that groove 7 is set increases gradually, be for when the air pressure of fuel tank is excessive, in time discharge the gas in the fuel tank as soon as possible, because when the fuel tank internal air pressure is excessive, this portion gas pushing steel ball 3 and distance that moves will be big more, the distance that moves along with steel ball 3 increases gradually, and then groove 7 bottoms will be big more apart from the distance on steel ball 3 surfaces, will be big more thereby leave the cross-section area that gas passes through for, make gas to pass through faster; When the negative pressure in the fuel tank was excessive, the gas in the activated carbon canister 9 also can enter in the fuel tank faster, thereby made the air pressure in the fuel tank return to normal range (NR) faster.
Fit mutually and seal in order better to make steel ball 3 and steel ball seat 5, as shown in figure 10, the edge part that contacts with steel ball 3 on steel ball seat 5 is for being formed with chamfering 8, this chamfering can be general straight line chamfering, also can be to form the concave arc chamfering with concave arc, preferably select the radius of this concave arc to equate with the radius of steel ball 3, between this moment steel ball 3 and the steel ball seat 5 for face contacts, the best sealing state with regard to realizing between steel ball 3 and the steel ball seat 5 so.
The foregoing description only is for the utility model is described, rather than to restriction of the present utility model.Those skilled in the art will appreciate that the utility model also can have many distortion under the prerequisite that does not break away from the utility model design.
Claims (6)
1, a kind of activated carbon canister one-way valve, comprise valve body (1), spring (2), steel ball (3), described valve body (1) is for having the cylindrical body of axial cavity (4), valve body (1) one end forms steel ball seat (5), steel ball seat (5) is provided with central through bore (51), described central through bore promptly plays locking ball (3), playing again simultaneously allows air communication cross effect, valve body (1) the other end is provided with spring seat (6), spring seat (6) is provided with the spring seat central through bore (61) that air feed stream passes through, spring (2) one ends are connected with spring seat (6), its the other end is resisted against on the steel ball (3), steel ball (3) is positioned at the cavity (4) of valve body (1) and can forms contact seal with central through bore (51) one ends of steel ball seat (5), it is characterized in that, cavity (4) inwall of valve body (1) is provided with the one or more of grooves (7) that axially extend to spring seat (6) one ends along valve body (1), and the starting point of described groove (7) is less than or equal to the distance of the centre of sphere of steel ball (3) to the nearest end end face of steel ball seat (5) to the distance of the nearest end end face of steel ball seat (5).
2, activated carbon canister one-way valve according to claim 1 is characterized in that, the end of described groove (7) extends to the end face of mounting spring seat (6) one ends of valve body (1) always.
3, activated carbon canister one-way valve according to claim 1, it is characterized in that, the starting point of described groove (7) extends certain distance to steel ball seat (5) one ends, and has formed aperture (52) on steel ball seat (5), and the shape of cross section of aperture (52) is consistent with the shape of cross section of groove (7).
4, activated carbon canister one-way valve according to claim 1 is characterized in that, the degree of depth of described groove (7) is along with groove (7) extends and increases gradually to spring seat (6) one ends.
5, activated carbon canister one-way valve according to claim 1 and 2 is characterized in that, the edge that described steel ball seat (5) contacts with steel ball (3) is formed with straight line chamfering (8).
6, activated carbon canister one-way valve according to claim 1 and 2 is characterized in that, described steel ball seat (5) is formed with the concave arc chamfering with the position that steel ball (3) contacts, and the radius of described concave arc equates with the radius of steel ball (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201312518U CN201401250Y (en) | 2009-04-30 | 2009-04-30 | Activated carbon pot one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201312518U CN201401250Y (en) | 2009-04-30 | 2009-04-30 | Activated carbon pot one-way valve |
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| CN201401250Y true CN201401250Y (en) | 2010-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201312518U Expired - Lifetime CN201401250Y (en) | 2009-04-30 | 2009-04-30 | Activated carbon pot one-way valve |
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| CN (1) | CN201401250Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288005A (en) * | 2011-06-13 | 2011-12-21 | 广州赛能冷藏科技有限公司 | Inside and outside pressure balance device of cold-accumulation heat exchanger |
| CN102486145A (en) * | 2010-12-02 | 2012-06-06 | 现代自动车株式会社 | Fuel tank control valve for vehicle |
| CN102959292A (en) * | 2010-06-24 | 2013-03-06 | 罗伯特·博世有限公司 | Non-return valve for a fluid pump |
| CN110206919A (en) * | 2019-06-27 | 2019-09-06 | 无锡明诚汽车部件有限公司 | Motor water-proof valve assembly structure |
| CN110462349A (en) * | 2017-10-11 | 2019-11-15 | 罗美特有限公司 | Rotary gas gauge with bump joint |
-
2009
- 2009-04-30 CN CN2009201312518U patent/CN201401250Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959292A (en) * | 2010-06-24 | 2013-03-06 | 罗伯特·博世有限公司 | Non-return valve for a fluid pump |
| CN102486145A (en) * | 2010-12-02 | 2012-06-06 | 现代自动车株式会社 | Fuel tank control valve for vehicle |
| CN102288005A (en) * | 2011-06-13 | 2011-12-21 | 广州赛能冷藏科技有限公司 | Inside and outside pressure balance device of cold-accumulation heat exchanger |
| CN110462349A (en) * | 2017-10-11 | 2019-11-15 | 罗美特有限公司 | Rotary gas gauge with bump joint |
| CN110206919A (en) * | 2019-06-27 | 2019-09-06 | 无锡明诚汽车部件有限公司 | Motor water-proof valve assembly structure |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100210 |
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| CX01 | Expiry of patent term |