CN202659998U - Overflow block valve - Google Patents
Overflow block valve Download PDFInfo
- Publication number
- CN202659998U CN202659998U CN 201220321011 CN201220321011U CN202659998U CN 202659998 U CN202659998 U CN 202659998U CN 201220321011 CN201220321011 CN 201220321011 CN 201220321011 U CN201220321011 U CN 201220321011U CN 202659998 U CN202659998 U CN 202659998U
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- Prior art keywords
- pressurize
- valve
- assembly
- fuel tank
- thin rubber
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model discloses an overflow block valve, wherein the periphery of thin pressure maintaining rubber is pressed between an annular seat and a soleplate, the position nearby the centre hole of the thin pressure maintaining rubber is close to a step in the case of normal pressure of an oil tank, gas in the oil tank exchanges with the outside through a small gap between the thin pressure maintaining rubber and the step; and when large negative pressure exists in the oil tank, the position nearby the centre hole of the thin pressure maintaining rubber moves downwards under the action of the external pressure, the external gas enters the oil tank through a gas intake groove, and the overflow block valve has the advantages of quickly adjusting the balance of the internal and external pressure difference of a fuel tank and greatly reducing the fuel oil overflow rate when the oil tank swings.
Description
Technical field
The utility model relates to a kind of valve body, especially relates to a kind of overflow cutting valve.
Background technique
Overflow cutting valve is installed on the vehicle fuel tank usually, has following effect: 1) during the vehicle fuel tank oiling, make vehicle fuel tank and atmosphere that certain passage be arranged by overflow cutting valve; And after vehicle fuel tank was filled with fuel oil, overflow cutting valve meeting autoshutdown prevented that fuel oil from overflowing from overflow cutting valve.2) last position of importantly working as fuel tank changes suddenly (such as the vehicle overturning), overflow cutting valve can stop fuel oil to flow out, as on September 14th, 2011 the disclosed patent No. be that 201120078737.7 name is called " a kind of overflow cutting valve ", it discloses valve body and has comprised valve casing, the valve casing bottom is equipped with the valve bottom, the valve casing upper end is provided with inlet hole, the floating core of the valve that setting can fluctuate in valve casing in the valve casing, be provided with fixing button on the floating core of valve, rubber valve is installed on the fixing button, is provided with spring between the floating core of valve and the valve bottom.The valve casing upper end is provided with disc seat, inlet hole is arranged on the base of disc seat, be placed with stainless steel sheets in the disc seat, base upper surface is provided with the annular convex rib that is looped around the inlet hole top, be provided with at least one place breach on the annular convex rib, the upper surface of stainless steel sheet and the most significant end of disc seat leave a segment distance.During in the normal oiling of fuel tank or with oily process, the floating core of valve falls back to the valve bottom, and spring is in compressive state, forms air-flow path in the valve body, makes fuel tank keep normal air pressure.When fuel oil was filled it up with in the fuel tank, the floating core of valve was at the floating function float downward of fuel oil, and rubber valve is blocked the lower end of inlet hole, can prevent that fuel oil is from inlet hole to outflow.When fuel tank is toppled over, the floating core of valve is in heeling condition, when the floating core inclination of valve reaches certain angle (such as 90 degree), the elastic force of spring is greater than the spring Directional Decomposition power of the floating core gravity of valve, spring is with the floating core jack-up of valve, rubber valve is blocked the lower end of inlet hole, can prevent that fuel oil is from inlet hole to outflow.By to the elastic force of spring and the adjustment of the floating core quality of valve, can float core by the inclination transition point of spring jack-up by control valve.
Be placed with the stainless steel sheet on the inlet hole, during in the normal oiling of fuel tank or with oil, form air-flow path by breach.The setting of stainless steel sheet both can guarantee that fuel tank inside was in communication with the outside, and made it remain on normal barometric pressure, can also prevent that the fuel oil in the fuel tank from passing through the too fast volatilization of inlet hole, avoided making surrounding environment to produce the fuel oil flavor.When the air pressure in the fuel tank was higher, highpressure can be washed stainless steel sheets open, the gas in the fuel tank was discharged, in order to make the fast quick-recovery normal barometric pressure of fuel tank by suction port.
The problem that this structure exists is: when 1, fuel tank and outside existence are than atm difference, because ventilation breach and the formed air-flow path of inlet hole are changeless, be unfavorable for the balance of quick adjustment fuel tank inside and outside differential pressure.2, the aspect ratio between ventilation breach and the valve gap is lower, and the design of product upper end pressure-maintaining structure itself, and under fuel tank rocked situation, the probability that fuel oil overflows was higher.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of in the situation of fuel tank and the larger negative air pressure of outside existence, the overflow cutting valve of energy quick adjustment fuel tank inside and outside differential pressure.
The utility model solves the problems of the technologies described above the technological scheme that adopts: a kind of overflow cutting valve, comprise valve body and valve gap, described valve gap is installed on the described valve body, described valve body comprises housing, the floating core assembly of valve and pressurize assembly, be provided with barrier assembly in the described housing housing is separated into epicoele and cavity of resorption, be provided with gas-entered passageway on the described barrier assembly, the floating core assembly of described valve is arranged in the cavity of resorption, described pressurize assembly is arranged in the epicoele, it is characterized in that described pressurize assembly comprises the pressurize working of plastics, the thin rubber of pressurize, capping and the first Returnning spring, described capping is fixed on the described housing
Described pressurize working of plastics comprises cylindrical shell and limit assembly, the base plate diameter of described cylindrical shell is greater than the external diameter of stack shell, the base plate center of cylindrical shell is provided with the step of downward protrusion, described limit assembly is arranged in the middle of the step, described limit assembly stretches into downwards in the described gas-entered passageway, is provided with a plurality of vents that communicate with cylinder lumen on the base plate of cylindrical shell, and the thin rubber case of described pressurize is on described limit assembly, be provided with the air inlet duct that Vertical direction is extended on the limit assembly
The first Returnning spring is enclosed within outside the stack shell, and the first Returnning spring is between capping and base plate; Be provided with annular seating on the described barrier assembly;
The periphery of the thin rubber of pressurize is pressed between annular seating and the base plate, and in fuel tank normal barometric pressure situation, the position is near step near the center hole of the thin rubber of pressurize, and fuel tank internal gas is by the micro-gap between the thin rubber of pressurize and the step and extraneous gas exchange; Exist when fuel tank internal in the situation of larger negative air pressure, the position moves down because of the external pressure effect near the thin rubber center hole of pressurize, extraneous gas enters in the fuel tank by air inlet duct, when fuel tank internal exists in the more atmospheric situation, the thin rubber of pressurize and pressurize working of plastics are rushed from annular seating by air pressure inside together, and the first Returnning spring is in compressive state.
Described limit assembly is comprised of a plurality of support plates with block, a plurality of support plates space and ringwise distribution, air inlet duct is two gaps between the support plate, and the outer surface of described support plate is provided with vertical convex tendon, and the thin rubber center hole of pressurize cooperates with vertical convex tendon.The position is mobile between block and step near the thin rubber center hole of pressurize, and the thin rubber center hole of pressurize cooperates with vertical convex tendon, and when moved at the position near the thin rubber center hole of pressurize, frictional force was smaller.
Described a plurality of vent annular spread is in the periphery of step.External pressure enters in the fuel tank through air inlet duct by behind the vent again.
Housing bottom is equipped with the valve bottom, and the floating core assembly of valve comprises floating core and rubber valve, is provided with the second spring between described floating core and the valve bottom, and rubber valve is installed on the floating core by fixing button.
Compared with prior art, the utility model has the advantages that when normal the oiling, fuel tank internal gas is by the micro-gap between the thin rubber of pressurize and the step and extraneous gas exchange.Under fuel tank internal existed than the barometric pressure situation, air pressure inside was so that the thin rubber of pressurize and pressurize working of plastics move on together, and this moment, the first Returnning spring was in compressive state, and the thin rubber of pressurize leaves annular seating, and internal gas is given vent to anger than comparatively fast.When fuel tank internal exists in the larger negative air pressure situation, the position moves down because of the external pressure effect near the thin rubber center hole of pressurize, extraneous gas enters in the fuel tank by air inlet duct, external pressure is larger, it is larger that near the position of the thin rubber center hole of pressurize moves down amplitude, the length of air inlet duct is larger, and air inlet is faster, but the balance of quick adjustment fuel tank inside and outside differential pressure.
Because the needs of pressurize assembly are installed, the height of epicoele increases, and under fuel tank rocked situation, the probability that fuel oil overflows greatly reduced.
Description of drawings
Fig. 1 is the schematic representation of the utility model in inner negative air pressure situation;
Fig. 2 is the schematic representation of the utility model in the normal barometric pressure situation;
Fig. 3 is A place enlarged view among Fig. 2;
Fig. 4 is pressurize assembly assumption diagram of the present utility model;
Fig. 5 is pressurize assembly sectional view of the present utility model;
Fig. 6 is pressurize assembly exploded view of the present utility model.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
A kind of overflow cutting valve, comprise valve body and valve gap 1, valve gap 1 is installed on the valve body, and valve body comprises housing 2, the floating core assembly of valve and pressurize assembly, is provided with barrier assembly 3 in the housing 2 housing is separated into epicoele 4 and cavity of resorption 5, be provided with gas-entered passageway 6 on the barrier assembly 3, the floating core assembly of valve is arranged in the cavity of resorption 5, and the pressurize assembly is arranged in the epicoele 4, and the pressurize assembly comprises pressurize working of plastics 7, the thin rubber 8 of pressurize, capping 9 and the first Returnning spring 10, capping 9 is fixed on the housing 2
Pressurize working of plastics 7 comprises cylindrical shell 71 and limit assembly 72, the base plate diameter of cylindrical shell 71 is greater than the external diameter of stack shell 711, base plate 712 centers of cylindrical shell 71 are provided with the step 73 of downward protrusion, limit assembly 72 is arranged in the middle of the step 73, limit assembly 72 stretches into downwards in the gas-entered passageway 6, is provided with a plurality of vents 74 that communicate with cylindrical shell 71 inner chambers on the base plate 712 of cylindrical shell 71, and the thin rubber 8 of pressurize is enclosed within on the limit assembly 72, be provided with the air inlet duct 713 that Vertical direction is extended on the limit assembly 72
The first Returnning spring 10 is enclosed within outside the stack shell 711, and the first Returnning spring 10 is between capping 9 and base plate 712; Be provided with annular seating 11 on the barrier assembly 3;
The periphery of the thin rubber 8 of pressurize is pressed between annular seating 11 and the base plate 712, in fuel tank normal barometric pressure situation, the position is near step 73 near the center hole of the thin rubber 8 of pressurize, and fuel tank internal gas is by the micro-gap 12 between the thin rubber 8 of pressurize and the step 73 and extraneous gas exchange; Exist when fuel tank internal in the situation of larger negative air pressure, the position moves down because of the external pressure effect near thin rubber 8 center holes of pressurize, and extraneous gas enters in the fuel tank by air inlet duct 713.In the more atmospheric situation of fuel tank internal existence, the thin rubber 8 of pressurize and pressurize working of plastics 7 are in compressive state by the air pressure inside punching from annular seating 11, the first Returnning springs 10 together
A plurality of vent 74 annular spread are in the periphery of step 73.
Housing 2 bottoms are equipped with valve bottom 13, and the floating core assembly of valve comprises floating core 14 and rubber valve 15, is provided with the second Returnning spring 16 between floating core 14 and the valve bottom 13, and rubber valve 15 is installed on the floating core 14 by fixing button 17.
Claims (4)
1. overflow cutting valve, comprise valve body and valve gap, described valve gap is installed on the described valve body, described valve body comprises housing, the floating core assembly of valve and pressurize assembly, be provided with barrier assembly in the described housing housing is separated into epicoele and cavity of resorption, be provided with gas-entered passageway on the described barrier assembly, the floating core assembly of described valve is arranged in the cavity of resorption, described pressurize assembly is arranged in the epicoele, it is characterized in that described pressurize assembly comprises the pressurize working of plastics, the thin rubber of pressurize, capping and the first Returnning spring, described capping is fixed on the described housing
Described pressurize working of plastics comprises cylindrical shell and limit assembly, the base plate diameter of described cylindrical shell is greater than the external diameter of stack shell, the base plate center of cylindrical shell is provided with the step of downward protrusion, described limit assembly is arranged in the middle of the step, described limit assembly stretches into downwards in the described gas-entered passageway, is provided with a plurality of vents that communicate with cylinder lumen on the base plate of cylindrical shell, and the thin rubber case of described pressurize is on described limit assembly, be provided with the air inlet duct that Vertical direction is extended on the limit assembly
The first Returnning spring is enclosed within outside the stack shell, and the first Returnning spring is between capping and base plate; Be provided with annular seating on the described barrier assembly;
The periphery of the thin rubber of pressurize is pressed between annular seating and the base plate, and in fuel tank normal barometric pressure situation, the position is near step near the center hole of the thin rubber of pressurize, and fuel tank internal gas is by the micro-gap between the thin rubber of pressurize and the step and extraneous gas exchange; Exist when fuel tank internal in the situation of larger negative air pressure, the position moves down because of the external pressure effect near the thin rubber center hole of pressurize, and extraneous gas enters in the fuel tank by air inlet duct; In the more atmospheric situation of fuel tank internal existence, the thin rubber of pressurize and pressurize working of plastics are rushed from annular seating by air pressure inside together, and the first Returnning spring is in compressive state.
2. a kind of overflow cutting valve according to claim 1, it is characterized in that described limit assembly is comprised of a plurality of support plates with block, a plurality of support plates space and ringwise distribution, described air inlet duct is two gaps between the support plate, the outer surface of described support plate is provided with vertical convex tendon, and the thin rubber center hole of pressurize cooperates with vertical convex tendon.
3. a kind of overflow cutting valve according to claim 2 is characterized in that described a plurality of vent annular spread is in the periphery of step.
4. a kind of overflow cutting valve according to claim 3, it is characterized in that housing bottom is equipped with the valve bottom, the floating core assembly of valve comprises floating core and rubber valve, is provided with the second Returnning spring between described floating core and the valve bottom, and rubber valve is installed on the floating core by fixing button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220321011 CN202659998U (en) | 2012-07-02 | 2012-07-02 | Overflow block valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220321011 CN202659998U (en) | 2012-07-02 | 2012-07-02 | Overflow block valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659998U true CN202659998U (en) | 2013-01-09 |
Family
ID=47454907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220321011 Expired - Lifetime CN202659998U (en) | 2012-07-02 | 2012-07-02 | Overflow block valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202659998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734517A (en) * | 2012-07-02 | 2012-10-17 | 孙达立 | Overflow cutting valve |
-
2012
- 2012-07-02 CN CN 201220321011 patent/CN202659998U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734517A (en) * | 2012-07-02 | 2012-10-17 | 孙达立 | Overflow cutting valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20140604 |
|
| RGAV | Abandon patent right to avoid regrant |