CN103383006B - A kind of overturn-preventing valve and using method thereof - Google Patents
A kind of overturn-preventing valve and using method thereof Download PDFInfo
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Abstract
A kind of overturn-preventing valve, comprise valve shell, switch bracket, pedestal, staight shank, Returnning spring and hexagon head plug screw, seam is provided with in described valve shell, the below of upper seam is disposed with switch bracket, steel ball and pedestal, pedestal comprises table top and stage body, table top is positioned on valve body, cavity of resorption jointing place, table top is provided with groove, oil through, plane of inclination and guiding gutter, table top is connected with staight shank through stage body, the other end of staight shank is connected with hexagon head plug screw after lower end cap, pedestal, staight shank is positioned at table top, position overcoat between lower end cap has Returnning spring, when vehicle topples, the design cuts off oil-feed, return line by overturn-preventing valve, one-way valve simultaneously, during vehicle return, the design is by pedestal, staight shank, the manual return of Returnning spring.The design can not only cut off that oil-fired system is entered, return line simultaneously, guarantees the manual return of oil cutting-off device that topples, and is convenient to install, and Security is stronger.
Description
Technical field
The present invention relates to a kind of automobile oil cutting-off device of toppling, particularly relate to a kind of overturn-preventing valve and using method thereof, be specifically applicable to guarantee vehicle topple oil-break basis on strengthen the Security of use and the convenience of installation.
Background technique
The commercial car that current automobile market is sold especially passenger vehicle all to be toppled oil cutting-off device less than the vehicle for automotive fuel oil system, once automobile generation capsizing case probably will cause fuel leakage, the Security of driver and conductor is difficult to be effectively protected.For improving the Safety performance requirement of automobile self, to topple oil cutting-off device in the urgent need to developing a kind of vehicle for automotive fuel oil system at present, this device not only demand fulfillment automobile is toppling or is cutting off the requirement of oil-fired system fuel feeding under there is larger angle inclination situation, also demand fulfillment installs facility, safe and reliable, without the requirement of potential potential safety hazard.
China Patent Publication No. is CN101509441A, publication date is that the patent of invention on August 19th, 2009 discloses a kind of toppling valve be installed on vehicle fuel tank snorkel, this invention comprise housing and be connected with the valve pocket in housing first, second connection for breather pipe, valve plug is provided with in valve pocket, steel ball and valve seat, the connectivity part of valve pocket and the first connection for breather pipe is provided with valve port, the side of valve plug is provided with plug and valve port matches, steel ball is between the opposite side and inverted cone valve seat of valve plug, when coordinating between plug with valve port, that continuous print face contacts in the circumferential between plug with valve port.Although fuel oil when this invention can avoid car body to topple in fuel tank overflows and enters in canister, it still has following defect:
First, during this invention uses, after the vehicle that will topple returns to normal travelling state, the steel ball meeting self-return that it comprises, thus automatically recover oil-fired system in-line, easily cause obstacle to rescue action, cause the generation again of accident;
Secondly, this invention only can cut off oil-fired system in-line, but ignores oil-fired system return line, and when vehicle topples, if can not cut off oil-fired system return line, fuel oil still can be caused to reveal, thus accidents caused.
Summary of the invention
The object of the invention is to overcome exist in prior art the oil cutting-off device self-return that topples, the lower defect of oil-fired system in-line, Security and problem can only be cut off when toppling, the manual return of a kind of oil cutting-off device of toppling is provided, oil-fired system oil-feed and return line can be cut off when toppling simultaneously, overturn-preventing valve that Security is higher and using method thereof.
For realizing above object, technical solution of the present invention is: a kind of overturn-preventing valve, comprise valve shell and inner steel ball, switch bracket and the pedestal arranged thereof, the two ends up and down of described valve shell are connected with upper end cap, lower end cap respectively, in valve shell, the position of nearly upper end cap is provided with seam, the below of upper seam is provided with the switch bracket matched with it, and the bottom of switch bracket contacts with pedestal through steel ball;
Described overturn-preventing valve also comprises Returnning spring, staight shank and hexagon head plug screw;
Described pedestal comprises table top and stage body; Described table top is positioned at the jointing place of valve body epicoele, valve body cavity of resorption, the periphery of table top contacts with the inwall of valve body cavity of resorption, the position, center of table top is provided with the groove matched with steel ball, the surrounding of groove is provided with multiple oil through communicated with groove, the bottom of table top is connected with one end of staight shank after stage body, and the other end of staight shank is connected with hexagon head plug screw after lower end cap; The cross sectional area of described table top is greater than the maximum cross section area of stage body, and the position overcoat on pedestal, staight shank between table top, lower end cap has Returnning spring.
The jointing place of described staight shank, hexagon head plug screw is provided with seal washer, and on staight shank, the position at nearly hexagon head plug screw top offers pin-and-hole, and bottom hexagon head plug screw, the jointing place of lower end cap is provided with O type seal ring.
Described table top is circular, the periphery of table top contacts with the inwall of valve body cavity of resorption, the position, center of table top is provided with the groove matched with steel ball, the surrounding of groove is evenly provided with four oil throughs, plane of inclination is provided with between oil through, groove, plane of inclination is provided with guiding gutter, and the two ends of guiding gutter communicate with oil through, groove respectively.
Described stage body is tapered, the area of the upper-end surface of stage body is greater than the area of the lower end surface of stage body, the upper-end surface of stage body is connected with the bottom of table top, and the lower end surface of stage body is connected with one end of staight shank, and the other end of staight shank is connected with hexagon head plug screw after lower end cap.
Described valve shell and the Placement between upper end cap, lower end cap are for being threaded; Described table top, stage body, staight shank are integral type structure, and its manufactured materials is all oil resistant plastics.
A using method for above-mentioned overturn-preventing valve, described using method comprises the following steps:
The first step: first the lower end cap of overturn-preventing valve is connected with the oil outlet of fuel tank, then the upper end cap of overturn-preventing valve is connected with the filler opening of oil pump for engine, now, overturn-preventing valve installs;
Second step: when automobile normal running, the bottom of steel ball is agreed with mutually with groove, upper seam and switch bracket are separated, oil in fuel tank communicates with the filler opening of oil pump for engine successively after lower end cap, valve body cavity of resorption, oil through, valve body epicoele, upper seam, upper end cap, now, oil-fired system in-line keeps clear;
3rd step: when automobile topples, steel ball is rolled to oil through direction by groove gradually because conducting oneself with dignity, in the process of rolling, steel ball is by switch bracket upwards jack-up gradually, and up switch bracket and upper seam close gradually, and the fuel oil entered in oil pump for engine by fuel tank reduces gradually, until switch bracket agrees with mutually with upper seam, now, overturn-preventing valve cuts out oil-fired system in-line completely, and flame-out shutdown forced by motor;
4th step: when the automobile after toppling returns to normal travelling state, under the effect of Returnning spring, steel ball is still sandwiched in switch bracket, between oil through, upper seam agrees with mutually with switch bracket, recover for making oil-fired system in-line to open, first open hexagon head plug screw, again that staight shank is drop-down, drop-down staight shank drives Returnning spring to press down the upper elasticity reducing spring by table top, in drop-down process, steel ball is rolled to groove direction gradually by oil through, switch bracket and upper seam depart from gradually, until steel ball agrees with mutually with groove, now, steel ball resets complete, oil-fired system in-line recovers to open.
In the described first step: the nearly fuel tank rear end of described overturn-preventing valve is vertically installed, and horizontal alignment error should be less than or equal to 1 degree; The return opening of described motor communicates with the return opening of fuel tank through one-way valve, and the nearly fuel tank front end of one-way valve is vertically installed;
In described second step: the excess oil in described motor flows into fuel tank successively after engine oil return mouth, one-way valve, fuel tank return opening, now, oil-fired system return line keeps clear;
In described 3rd step: described closed check valve, now, oil-fired system return line is closed;
In described 4th step: described one-way valve is opened, now, oil-fired system return line recovers to open.
Distance on described overturn-preventing valve and fuel tank rear end between oil outlet is less than or equal to 50 centimetres, and the distance on described one-way valve and fuel tank front end between return opening is less than or equal to 50 centimetres.
Compared with prior art, beneficial effect of the present invention is:
1, Returnning spring is had additional in overturn-preventing valve in a kind of overturn-preventing valve of the present invention and using method thereof, staight shank and hexagon head plug screw, wherein, one end of staight shank is connected with stage body, the other end is connected with hexagon head plug screw after lower end cap, and at pedestal, staight shank is positioned at table top, position overcoat between lower end cap has Returnning spring, in using, when vehicle is become normal travelling state by the recovering state that topples, under the effect of Returnning spring, steel ball is still sandwiched in switch bracket, between oil through, upper seam still agrees with mutually with switch bracket, oil-fired system in-line is still closed, must by means of manually just oil-fired system in-line being recovered to open, the in-line that effectively prevent unexpected conducting causes obstacle to stand-by service, thus improve the Security of stand-by service.Therefore, the manual return of oil cutting-off device of toppling in the present invention, can improve the Security of stand-by service.
2, the overturn-preventing valve in a kind of overturn-preventing valve of the present invention and using method thereof in use; the oil outlet of fuel tank communicates with the filler opening of oil pump for engine through overturn-preventing valve; the return opening of motor communicates with the return opening of fuel tank through one-way valve; in using; when vehicle topples; oil-fired system in-line can not only be cut off by overturn-preventing valve; and cut off oil-fired system return line by one-way valve; pressure engine misses are shut down; guarantee that fuel oil is not revealed; thus avoid fault spread, make driver and conductor safer.Therefore, the present invention can cut off oil-fired system oil-feed and return line when toppling simultaneously, and Security is stronger.
3, overturn-preventing valve in a kind of overturn-preventing valve of the present invention and using method thereof in use, need overturn-preventing valve, one-way valve is assembled, require during assembling that the nearly fuel tank rear end of overturn-preventing valve is vertically installed, horizontal alignment error should be less than or equal to 1 degree, the nearly fuel tank front end of one-way valve is vertically installed, especially require that the distance on overturn-preventing valve and fuel tank rear end between oil outlet is less than or equal to 50 centimetres, distance on one-way valve and fuel tank front end between return opening is less than or equal to 50 centimetres, this design can not only reduce installing space, improve the convenience installed, and the normal traveling of vehicle can not be affected, without potential safety hazard.Therefore, the present invention is not only convenient to install, and Security is stronger.
4, a kind of overturn-preventing valve of the present invention and using method thereof are by the design to steel ball, switch bracket, pedestal, can guarantee when vehicle occurs to roll, steel ball is rolled to oil through gradually by groove, switch bracket and upper seam close gradually, and in-line is closed gradually, instead of vehicle one rolls, in-line is just closed at once, effectively avoid after under some specific condition, vehicle rolls, motor is flame-out and cause situation to lose control of one's vehicle to occur suddenly, improves the Security of vehicle operating.Therefore, Security of the present invention is stronger.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the structural representation of pedestal in Fig. 1.
Fig. 4 is the plan view of Fig. 3.
Fig. 5 is the structural representation that the present invention is positioned at when toppling state.
Fig. 6 is assembling schematic diagram of the present invention.
In figure: steel ball 1, valve shell 2, upper end cap 21, lower end cap 22, valve body epicoele 23, valve body cavity of resorption 24, switch bracket 3, pedestal 4, staight shank 5, pin-and-hole 51, Returnning spring 6, hexagon head plug screw 7, upper seam 8, table top 9, groove 91, oil through 92, plane of inclination 93, guiding gutter 94, stage body 10, seal washer 11, O type seal ring 12.
Embodiment
Illustrate that the present invention is further detailed explanation with embodiment below in conjunction with accompanying drawing.
See figure 1 – Fig. 6, a kind of overturn-preventing valve, comprise valve shell 2 and inner steel ball 1, switch bracket 3 and the pedestal 4 arranged thereof, the two ends up and down of described valve shell 2 are connected with upper end cap 21, lower end cap 22 respectively, in valve shell 2, the position of nearly upper end cap 21 is provided with seam 8, the below of upper seam 8 is provided with the switch bracket 3 matched with it, and the bottom of switch bracket 3 contacts with pedestal 4 through steel ball 1;
Described overturn-preventing valve also comprises Returnning spring 6, staight shank 5 and hexagon head plug screw 7;
Described pedestal 4 comprises table top 9 and stage body 10; Described table top 9 is positioned at the jointing place of valve body epicoele 23, valve body cavity of resorption 24, the periphery of table top 9 contacts with the inwall of valve body cavity of resorption 24, the position, center of table top 9 is provided with the groove 91 matched with steel ball 1, the surrounding of groove 91 is provided with multiple oil through 92 communicated with groove 91, the bottom of table top 9 is connected with one end of staight shank 5 after stage body 10, and the other end of staight shank 5 is connected with hexagon head plug screw 7 after lower end cap 22; The cross sectional area of described table top 9 is greater than the maximum cross section area of stage body 10, and the position overcoat on pedestal 4, staight shank 5 between table top 9, lower end cap 22 has Returnning spring 6.
The jointing place of described staight shank 5, hexagon head plug screw 7 is provided with seal washer 11, and on staight shank 5, the position at nearly hexagon head plug screw 7 top offers pin-and-hole 51, and bottom hexagon head plug screw 7, the jointing place of lower end cap 22 is provided with O type seal ring 12.
Described table top 9 is circular, the periphery of table top 9 contacts with the inwall of valve body cavity of resorption 24, the position, center of table top 9 is provided with the groove 91 matched with steel ball 1, the surrounding of groove 91 is evenly provided with four oil throughs 92, plane of inclination 93 is provided with between oil through 92, groove 91, plane of inclination 93 is provided with guiding gutter 94, the two ends of guiding gutter 94 communicate with oil through 92, groove 91 respectively.
Described stage body 10 is tapered, the area of the upper-end surface of stage body 10 is greater than the area of the lower end surface of stage body 10, the upper-end surface of stage body 10 is connected with the bottom of table top 9, and the lower end surface of stage body 10 is connected with one end of staight shank 5, and the other end of staight shank 5 is connected with hexagon head plug screw 7 after lower end cap 22.
Described valve shell 2 and the Placement between upper end cap 21, lower end cap 22 are for being threaded; Described table top 9, stage body 10, staight shank 5 are integral type structure, and its manufactured materials is all oil resistant plastics.
A using method for above-mentioned overturn-preventing valve, described using method comprises the following steps:
The first step: first the lower end cap 22 of overturn-preventing valve is connected with the oil outlet of fuel tank, then the upper end cap 21 of overturn-preventing valve is connected with the filler opening of oil pump for engine, now, overturn-preventing valve installs;
Second step: when automobile normal running, the bottom of steel ball 1 is agreed with mutually with groove 91, upper seam 8 is separated with switch bracket 3, oil in fuel tank communicates with the filler opening of oil pump for engine successively after lower end cap 22, valve body cavity of resorption 24, oil through 92, valve body epicoele 23, upper seam 8, upper end cap 21, now, oil-fired system in-line keeps clear;
3rd step: when automobile topples, steel ball 1 is rolled to oil through 92 direction by groove 91 gradually because conducting oneself with dignity, in the process of rolling, steel ball 1 is by switch bracket 3 upwards jack-up gradually, and up switch bracket 3 closes gradually with upper seam 8, and the fuel oil entered in oil pump for engine by fuel tank reduces gradually, until switch bracket 3 agrees with mutually with upper seam 8, now, overturn-preventing valve cuts out oil-fired system in-line completely, and flame-out shutdown forced by motor;
4th step: when the automobile after toppling returns to normal travelling state, under the effect of Returnning spring 6, steel ball 1 is still sandwiched in switch bracket 3, between oil through 92, upper seam 8 agrees with mutually with switch bracket 3, recover for making oil-fired system in-line to open, first open hexagon head plug screw 7, again by drop-down for staight shank 5, drop-down staight shank 5 drives Returnning spring 6 to press down to reduce the upper elasticity of spring by table top 9, in drop-down process, steel ball 1 is rolled to groove 91 direction gradually by oil through 92, switch bracket 3 and upper seam 8 depart from gradually, until steel ball 1 agrees with mutually with groove 91, now, steel ball 1 resets complete, oil-fired system in-line recovers to open.
In the described first step: the nearly fuel tank rear end of described overturn-preventing valve is vertically installed, and horizontal alignment error should be less than or equal to 1 degree; The return opening of described motor communicates with the return opening of fuel tank through one-way valve, and the nearly fuel tank front end of one-way valve is vertically installed;
In described second step: the excess oil in described motor flows into fuel tank successively after engine oil return mouth, one-way valve, fuel tank return opening, now, oil-fired system return line keeps clear;
In described 3rd step: described closed check valve, now, oil-fired system return line is closed;
In described 4th step: described one-way valve is opened, now, oil-fired system return line recovers to open.
Distance on described overturn-preventing valve and fuel tank rear end between oil outlet is less than or equal to 50 centimetres, and the distance on described one-way valve and fuel tank front end between return opening is less than or equal to 50 centimetres.
Principle of the present invention is described as follows:
Easily cause fuel leakage accident when vehicle topples, the Security of driver and conductor is difficult to be effectively protected.For avoiding the generation of this problem, a kind of vehicle for automotive fuel oil system of exploitation is needed to topple oil cutting-off device, this device not only demand fulfillment automobile cuts off the oil circuit of oil-fired system when toppling or larger angle inclination occurs, also demand fulfillment installs facility, safe and reliable, without the requirement of potential potential safety hazard.
Existing vehicle topple oil cutting-off device exist two large defects, one is the oil cutting-off device self-return that topples, easily accidents caused generation again, thus threatens to stand-by service; Two is the in-lines that can only cut off oil-fired system, but ignores oil-fired system return line, causes can not cutting off oil-fired system return line when vehicle topples, thus causes the generation of accident.For overcoming the defect of above-mentioned prior art, the ad hoc meter of the present invention is as follows:
First object: possess hand reset function, namely after vehicle generation capsizing case, oil cutting-off device of toppling close oil-fired system oil circuit, must manually manually open by reset switch, and ability recovery system fuel feeding, to improve the Security of vehicle.This object realizes primarily of pedestal, Returnning spring, staight shank and hexagon head plug screw in the present invention.
Second object: to turn on one's side at vehicle, topple etc. traffic accident time, timely bidirectional cutting oil-fired system is entered, return line, positive closing motor, avoids causing fuel oil to be revealed because fuel pipe breaks, to improve the safety coefficient of driver and conductor.This object realizes primarily of one-way valve in the present invention.
3rd object: the progressively oil-break function being realized oil-fired system by structure optimization, to avoid after under some specific condition, vehicle rolls, motor is flame-out and cause situation to lose control of one's vehicle to occur suddenly.This object realizes primarily of steel ball, switch bracket, pedestal in the present invention.
Embodiment 1:
See figure 1 – Fig. 4, a kind of overturn-preventing valve, comprise steel ball 1, valve shell 2, switch bracket 3, pedestal 4, staight shank 5, Returnning spring 6 and hexagon head plug screw 7, the two ends up and down of described valve shell 2 are threaded with upper end cap 21, lower end cap 22 respectively, in valve shell 2, the position of nearly upper end cap 21 is provided with seam 8, the below of upper seam 8 is provided with the switch bracket 3 matched with it, and the bottom of switch bracket 3 contacts with pedestal 4 through steel ball 1;
Described pedestal 4, staight shank 5 are integral type structure, and its manufactured materials is oil resistant plastics, and pedestal 4 comprises table top 9 and stage body 10; Described table top 9 is positioned at the jointing place of valve body epicoele 23, valve body cavity of resorption 24, table top 9 is circular, the periphery of table top 9 contacts with the inwall of valve body cavity of resorption 24, the position, center of table top 9 is provided with the groove 91 matched with steel ball 1, the surrounding of groove 91 is evenly provided with four oil throughs 92, be provided with plane of inclination 93 between oil through 92, groove 91, plane of inclination 93 be provided with guiding gutter 94, the two ends of guiding gutter 94 communicate with oil through 92, groove 91 respectively; Described stage body 10 is tapered, the area of the upper-end surface of stage body 10 is greater than the area of the lower end surface of stage body 10, the upper-end surface of stage body 10 is connected with the bottom of table top 9, and the lower end surface of stage body 10 is connected with one end of staight shank 5, and the other end of staight shank 5 is connected with hexagon head plug screw 7 after lower end cap 22; Position overcoat on described pedestal 4, staight shank 5 between table top 9, lower end cap 22 has Returnning spring 6;
The jointing place of described staight shank 5, hexagon head plug screw 7 is provided with seal washer 11, on staight shank 5, the position at nearly hexagon head plug screw 7 top offers pin-and-hole 51(for increasing cotter pin or pivot pin, with the convenient operation when hand reset), the bottom of hexagon head plug screw 7, the jointing place of lower end cap 22 are provided with O type seal ring 12.
A using method for above-mentioned overturn-preventing valve, described using method comprises the following steps:
The first step: see Fig. 6, first the lower end cap 22 of overturn-preventing valve is connected with the oil outlet of fuel tank, again the upper end cap 21 of overturn-preventing valve is connected with the filler opening of oil pump for engine, the nearly fuel tank rear end of overturn-preventing valve is vertically installed, install firmly, after overturn-preventing valve is installed, its horizontal alignment error should be less than or equal to 1 degree, then the return opening of motor is connected with the return opening of fuel tank through one-way valve, and the nearly fuel tank front end of one-way valve is vertically installed; Now, overturn-preventing valve installs;
Second step: see Fig. 1 and Fig. 6, when automobile normal running, the bottom of steel ball 1 is agreed with mutually with groove 91, upper seam 8 is separated with switch bracket 3, oil in fuel tank communicates with the filler opening of oil pump for engine successively after lower end cap 22, valve body cavity of resorption 24, oil through 92, valve body epicoele 23, upper seam 8, upper end cap 21, now, oil-fired system in-line keeps clear;
Excess oil in described motor flows into fuel tank successively after engine oil return mouth, one-way valve, fuel tank return opening, and now, oil-fired system return line keeps clear;
3rd step: see Fig. 5 and Fig. 6, when automobile topples, steel ball 1 is rolled to oil through 92 direction by groove 91 gradually because of deadweight, and in the process of rolling, steel ball 1 is by switch bracket 3 upwards jack-up gradually, up switch bracket 3 closes gradually with upper seam 8, the fuel oil entered in oil pump for engine by fuel tank reduces gradually, until switch bracket 3 agrees with mutually with upper seam 8, now, overturn-preventing valve cuts out oil-fired system in-line completely, and flame-out shutdown forced by motor; Described closed check valve, now, oil-fired system return line is closed;
4th step: see Fig. 1, Fig. 5 and Fig. 6, when the automobile after toppling returns to normal travelling state, described one-way valve is opened, now, oil-fired system return line recovers to open, but under the effect of Returnning spring 6, steel ball 1 is still sandwiched in switch bracket 3, between oil through 92, upper seam 8 still agrees with mutually with switch bracket 3, recover for making oil-fired system in-line to open, must first open hexagon head plug screw 7, again by drop-down for staight shank 5, drop-down staight shank 5 drives Returnning spring 6 to press down to reduce the upper elasticity of spring by table top 9, in drop-down process, steel ball 1 is rolled to groove 91 direction gradually by oil through 92, switch bracket 3 and upper seam 8 depart from gradually, until steel ball 1 agrees with mutually with groove 91, now, steel ball 1 resets complete, oil-fired system in-line recovers to open.
Claims (8)
1. an overturn-preventing valve, comprise valve shell (2) and inner steel ball (1), switch bracket (3) and the pedestal (4) arranged thereof, the two ends up and down of described valve shell (2) are connected with upper end cap (21), lower end cap (22) respectively, in valve shell (2), the position of nearly upper end cap (21) is provided with seam (8), the below of upper seam (8) is provided with the switch bracket (3) matched with it, the bottom of switch bracket (3) contacts with pedestal (4) through steel ball (1), it is characterized in that:
Described overturn-preventing valve also comprises Returnning spring (6), staight shank (5) and hexagon head plug screw (7);
Described pedestal (4) comprises table top (9) and stage body (10); Described table top (9) is positioned at the jointing place of valve body epicoele (23), valve body cavity of resorption (24), the periphery of table top (9) contacts with the inwall of valve body cavity of resorption (24), the position, center of table top (9) is provided with the groove (91) matched with steel ball (1), the surrounding of groove (91) is provided with multiple oil through (92) communicated with groove (91), the bottom of table top (9) is connected with one end of staight shank (5) after stage body (10), and the other end of staight shank (5) is connected with hexagon head plug screw (7) after lower end cap (22); The cross sectional area of described table top (9) is greater than the maximum cross section area of stage body (10), and position overcoat pedestal (4), staight shank (5) are positioned between table top (9), lower end cap (22) has Returnning spring (6).
2. a kind of overturn-preventing valve according to claim 1, it is characterized in that: the jointing place of described staight shank (5), hexagon head plug screw (7) is provided with seal washer (11), the position at upper nearly hexagon head plug screw (7) top of staight shank (5) offers pin-and-hole (51), and the jointing place of hexagon head plug screw (7) bottom, lower end cap (22) is provided with O type seal ring (12).
3. a kind of overturn-preventing valve according to claim 1 and 2, it is characterized in that: described table top (9) is for circular, the periphery of table top (9) contacts with the inwall of valve body cavity of resorption (24), the position, center of table top (9) is provided with the groove (91) matched with steel ball (1), the surrounding of groove (91) is evenly provided with four oil throughs (92), oil through (92), plane of inclination (93) is provided with between groove (91), plane of inclination (93) is provided with guiding gutter (94), the two ends of guiding gutter (94) respectively with oil through (92), groove (91) communicates.
4. a kind of overturn-preventing valve according to claim 1 and 2, it is characterized in that: described stage body (10) is for tapered, the area of the upper-end surface of stage body (10) is greater than the area of the lower end surface of stage body (10), the upper-end surface of stage body (10) is connected with the bottom of table top (9), the lower end surface of stage body (10) is connected with one end of staight shank (5), and the other end of staight shank (5) is connected with hexagon head plug screw (7) after lower end cap (22).
5. a kind of overturn-preventing valve according to claim 1 and 2, is characterized in that: described valve shell (2) and the Placement between upper end cap (21), lower end cap (22) are for being threaded; Described table top (9), stage body (10), staight shank (5) are integral type structure, and its manufactured materials is all oil resistant plastics.
6. a using method for overturn-preventing valve according to claim 1, is characterized in that described using method comprises the following steps:
The first step: first the lower end cap (22) of overturn-preventing valve is connected with the oil outlet of fuel tank, then the upper end cap (21) of overturn-preventing valve is connected with the filler opening of oil pump for engine, now, overturn-preventing valve installs;
Second step: when automobile normal running, the bottom of steel ball (1) is agreed with mutually with groove (91), upper seam (8) and switch bracket (3) are separated, oil in fuel tank communicates with the filler opening of oil pump for engine after (21) through lower end cap (22), valve body cavity of resorption (24), oil through (92), valve body epicoele (23), upper seam (8), upper end cap successively, now, oil-fired system in-line keeps clear;
3rd step: when automobile topples, steel ball (1) is rolled to oil through (92) direction by groove (91) gradually because conducting oneself with dignity, in the process of rolling, steel ball (1) is by switch bracket (3) upwards jack-up gradually, up switch bracket (3) and upper seam (8) close gradually, the fuel oil entered in oil pump for engine by fuel tank reduces gradually, until switch bracket (3) agrees with mutually with upper seam (8), now, overturn-preventing valve cuts out oil-fired system in-line completely, and flame-out shutdown forced by motor;
4th step: when the automobile after toppling returns to normal travelling state, under the effect of Returnning spring (6), steel ball (1) is still sandwiched in switch bracket (3), between oil through (92), upper seam (8) agrees with mutually with switch bracket (3), recover for making oil-fired system in-line to open, first open hexagon head plug screw (7), again by drop-down for staight shank (5), drop-down staight shank (5) drives Returnning spring (6) to press down the upper elasticity reducing spring by table top (9), in drop-down process, steel ball (1) is rolled to groove (91) direction gradually by oil through (92), switch bracket (3) and upper seam (8) depart from gradually, until steel ball (1) agrees with mutually with groove (91), now, steel ball (1) resets complete, oil-fired system in-line recovers to open.
7. the using method of a kind of overturn-preventing valve according to claim 6, is characterized in that:
In the described first step: the nearly fuel tank rear end of described overturn-preventing valve is vertically installed, and horizontal alignment error should be less than or equal to 1 degree; The return opening of described motor communicates with the return opening of fuel tank through one-way valve, and the nearly fuel tank front end of one-way valve is vertically installed;
In described second step: the excess oil in described motor flows into fuel tank successively after engine oil return mouth, one-way valve, fuel tank return opening, now, oil-fired system return line keeps clear;
In described 3rd step: described closed check valve, now, oil-fired system return line is closed;
In described 4th step: described one-way valve is opened, now, oil-fired system return line recovers to open.
8. the using method of a kind of overturn-preventing valve according to claim 7, it is characterized in that: the distance on described overturn-preventing valve and fuel tank rear end between oil outlet is less than or equal to 50 centimetres, the distance on described one-way valve and fuel tank front end between return opening is less than or equal to 50 centimetres.
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| US4185651A (en) * | 1977-06-30 | 1980-01-29 | Paulson Eugene K | Inertially triggered fluid flow control device |
| US4299247A (en) * | 1979-01-10 | 1981-11-10 | Keller Russell D | Fuel tank vent |
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| JP3096888B2 (en) * | 1995-12-19 | 2000-10-10 | リンナイ株式会社 | Tumble gas shut-off valve |
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