CN2499652Y

CN2499652Y - Oil overflow cut-off valve with safety pressure discharge device

Info

Publication number: CN2499652Y
Application number: CN 01258924
Authority: CN
Inventors: 黄钊仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-29
Filing date: 2001-08-29
Publication date: 2002-07-10
Anticipated expiration: 2011-08-29

Abstract

The utility model relates to an oil overflow cut-off valve with safety pressure discharge device, wherein a safety pressure discharge device is arranged in an oil overflow cut-off valve. When a motorcycle is toppled (i.e. when a valve body is toppled and causes the cut-off of oil overflow), the deformation or fracture phenomenon of an oil tank is avoided by utilizing the safety pressure discharge device to release the negative pressure produced in the oil tank, and after the toppled motorcycle is erected up (i.e. after the valve body is erected up), the safety pressure discharge device is utilized to reduce the negative pressure in the oil tank rapidly, which can help a valve head easily overcome the holding effect of the negative pressure in the oil tank and rapidly revert to the former valve opening and oil gas communicating state, so as to achieve the objective that oil can be rapidly supplied after the motorcycle is toppled, causes the cut-off of oil overflow and then is erected up.

Description

Oil spilling cut-off valve with safe pressure relief device

Technical field

The utility model relates to a kind of oil spilling cut-off valve, particularly a kind of oil spilling cut-off valve with safe pressure relief device.

Background technique

The problem that oil plant leaks takes place when preventing that motorcycle from toppling over, generally all can be on the oil gas vent and the fairway between the activated carbon canister of motorcycle tank, install an oil spilling cut-off valve, in the hope of when motorcycle is toppled over, can above-mentioned fairway blocking-up be closed by the oil spilling cut-off valve, take place to prevent the situation that oil plant leaks.

Oil spilling cut-off valve product on the market, all be to design according to the demand, be included in substantially in the valve body that group is established a valve rod and another hammer body is formed, wherein be provided with the spring that less spring is pressed between this valve rod and hammer body, and also be provided with the spring of another big spring pressure between hammer body and valve body.

Under the normal condition that motorcycle is not toppled over, this oil spilling cut-off valve is to be out the valve shape, making oil gas in the fuel tank be communicated to activated carbon canister via the oil spilling cut-off valve filters and reclaims behind the oil gas and communicate with the external world, fairway can allow the interior oil gas of fuel tank efflux by this, avoid fuel tank internal cause oil gas evaporation and produce excessive pressure, cause the fuel tank distortion, also can allow ambient air enter fuel tank simultaneously, make be unlikely in the air chamber of fuel tank because of fuel consume be that fuel level produces negative pressure when descending, to avoid hindering another normal fuel injection that is connected in the oil feed line between Carburetor and fuel tank running, when motorcycle is toppled at the end, can keep normal fuel injection and hydrocarbon filter to reclaim running.

When motorcycle is toppled over (valve body is toppled over when cutting off oil spilling), because of heavier hammer body produces the gravity shift phenomenon, make spring be overcome threes' such as hammer body, less spring pressing spring and valve rod gross weight, and then the interlock spring draws valve rod to the close port state to push away, with the fairway between blocking-up fuel tank and activated carbon canister, to reach the purpose that oil spilling cuts off.

But practical experience is told us, often when motorcycle is toppled over, motor engine is flame-out yet, and the fuel oil of supply engine running closes valve because of oil spilling cut-off valve start this moment in continuing consumption, promptly form negative pressure in the air chamber of fuel tank because of the consumption of fuel oil, this negative pressure can continue to increase a period of time, up to hindering the running of oil feed line normal fuel injection, makes the engine auto extinguishing, if but this negative pressure is when surpassing the pressure that fuel tank can bear, on the contrary the phenomenon that can make fuel tank deform even break.

Thus, the phenomenon that deforms even break for fear of fuel tank, so this creator collection is specialized in the experience that the motorcycle equipment is made for many years, developed a kind of oil spilling cut-off valve at this puzzlement spy, be model utility motivation of the present utility model place to solve the above problems with safe pressure relief device.

Summary of the invention

Technical problem to be solved by this invention, promptly at the above-mentioned deficiency of prior art, and provide a kind of oil spilling cut-off valve with safe pressure relief device, with solve motorcycle topple over cut off oil spilling after, the negative pressure that can lead off in the fuel tank to be produced avoids fuel tank to deform or the phenomenon of breaking; And after motorcycle is toppled over the cut-out oil spilling and set upright, can recover the fuel feeding path rapidly.

Above-mentioned technical problem of the present utility model is realized by following technological scheme.

A kind of oil spilling cut-off valve with safe pressure relief device is made of a valve body, a bonnet, a bottom flange and another safe pressure relief device; Wherein, be to be formed with a valve port, a suction chamber and a discharge chamber in this valve body: this valve port is between suction chamber and discharge chamber, in order to be communicated with suction chamber and discharge chamber; Be the assemblying body that carries a valve rod and another hammer body in this discharge chamber, and sealed, and this bottom flange has an oil gas steam outlet pipe, in order to be communicated with discharge chamber and activated carbon canister by bottom flange; This suction chamber is sealed by bonnet, and this bonnet has an oil gas suction tude, in order to be communicated with suction chamber and fuel tank; It is characterized in that:

Be to be provided with a pressure releasing chamber in this suction chamber, and offer a pressure release air flue in the below of pressure releasing chamber, this pressure releasing chamber and pressure release air flue are communicated with suction chamber and discharge chamber, and group is established a safe pressure relief device in pressure releasing chamber; This safe pressure relief device is made of a spring and a ball valve, and this ball valve is to place on the pressure release air flue, and a spring is set on ball valve, and this spring holds ball valve on the pressure release air flue of pressure releasing chamber.

Advantage of the present utility model is:

When motorcycle is toppled over (valve body is toppled over when cutting off oil spilling), it is the negative pressure of utilizing safe pressure relief device to lead off in the fuel tank to be produced, with the phenomenon of avoiding fuel tank to deform or breaking, and motorcycle topple over set upright the back (after promptly setting upright valve body), be to utilize safe pressure relief device to reduce negative pressure in the fuel tank rapidly, can help valve head to overcome the RETENTION BY SOILS of negative pressure in the fuel tank easily, rapidly involution becomes the former valve of opening to be communicated with the oil gas state, with reach motorcycle topple over cut off oil spilling and set upright after the purpose of fuel feeding rapidly.

Comprehensive above-mentioned purpose and characteristics, the mode that will enumerate embodiment now and the utility model and utilization thereof be described in conjunction with the accompanying drawings in detail are as the back:

Description of drawings

Fig. 1 discloses three-dimensional exploded view of the present utility model.

Fig. 2 discloses cut-away view of the present utility model.

Fig. 3 discloses tilt state schematic representation of the present utility model.

Fig. 4 discloses safe pressure relief device opening state schematic representation of the present utility model.

Embodiment

First sight is shown in Figure 1, is to disclose a kind of preferred embodiment assembly form with oil spilling cut-off valve of safe pressure relief device of the utility model, includes:

One valve body 1, a bonnet 2, a bottom flange 3 and a safe pressure relief device 6; Be to be formed with a valve port 11, a suction chamber 12, a discharge chamber 13, a pressure releasing chamber 14 and a pressure release air flue 15 (as shown in Figure 2) in this valve body 1, this valve port 11 is between suction chamber 12 and discharge chamber 13, in order to be communicated with suction chamber 12 and discharge chamber 13, it in this discharge chamber 13 assemblying body that carries a valve rod 4 and another hammer body 5, and sealed by bottom flange 3, this bottom flange 3 has an oil gas steam outlet pipe 31; Be to be provided with a pressure releasing chamber 14 in this suction chamber 12, and offer a pressure release air flue 15 in the below of pressure releasing chamber 14, can be communicated with suction chamber 12 and discharge chamber 13 by pressure releasing chamber 14 and pressure release air flue 15, and sealed by bonnet 2, this bonnet 2 has an oil gas suction tude 21, and this safe pressure relief device 6 is to carry to be loaded in the pressure releasing chamber 14; Wherein,

These valve rod 4 head ends are to be provided with conical colloid valve head 41 (as shown in Figure 1), have when closing valve and can close the effect that valve port 11 prevents oil and gas leakage; And valve rod 4 tail ends are shaped on an outer annular protruding rib 42 of opening and the spring containing groove 43 of another indent, make the spring 44 that ornaments one have less spring pressure in containing groove 43, and this annular protruding rib 42 of mat, and valve rod 4 connection groups are placed on the hammer lid 53 of hammer body 5.

Offer a lid hole 55 (as shown in Figure 1) on this hammer lid 53,, make annular protruding rib 42 that valve rod 4 can its tail ends of mat and group is placed in hammer and cover on 53 for wearing the above-mentioned valve rod 4 of group, and the spring 44 that allows less spring press can load with valve rod 4 with hammer 51 into shape.

The weight of this hammer body 5 is greater than valve rod 4, and this hammer body 5 is to cover 53 be combined intos by hammer seat 51 and hammer, this hammer seat 51 is provided with outer tooth 52 (as shown in Figure 1), and in order to the hammer lid 53 of tooth 54 in the harness of spiral shell group lock, the bottom of hammer seat 51 is that Rong Taoyi has the spring 56 that big spring is pressed.

This safe pressure relief device 6 is constituted (as shown in Figure 1) by a spring 62 and a ball valve 61, this ball valve 61 is to place (as shown in Figure 2) on the pressure release air flue 15, and a spring 62 is set on ball valve 61, catch valve 61 on the pressure release air flue 15 of pressure releasing chamber 14 with elastic top.

When motorcycle is toppled over (valve body is toppled over when cutting off oil spilling), because of heavier hammer body 5 produces the gravity shift phenomenon, make spring 56 be overcome threes' such as hammer body 5, less spring pressing spring 44 and valve rod 4 gross weight, and then interlock spring 44 draws valve rod to close port state (as shown in Figure 3) to push away, with the fairway between blocking-up fuel tank and activated carbon canister, to reach the purpose that oil spilling cuts off.

At this moment, motor engine still end is flame-out, and during the fuel oil of supply engine running continues to consume, close valve because of oil spilling cut-off valve start this moment, promptly form negative pressure in the air chamber of fuel tank because of the consumption of fuel oil, the increase that this negative pressure can continue, when treating that its spring that surpasses the spring 62 that holds ball valve 61 is pressed, spring 62 will be compressed (as shown in Figure 4), make ball valve 61 can be subjected to the attraction of negative pressure and break away from pressure release air flue 15, and the negative pressure in the fuel tank, just can be by suction chamber 12 by pressure releasing chamber 14, be released in the discharge chamber 13 by pressure release air flue 15 by pressure releasing chamber 14 again, can avoid the negative pressure in the fuel tank to continue to increase, and then the phenomenon that causes fuel tank to deform even break.

When motorcycle because of topple over make the start of oil spilling cut-off valve after, when again motorcycle being set upright, except utilizing the gravity sag involution phenomenon of the hammer body 5 in the valve body 1, and hammer body 5 gravity drawing valve rods 4 are together outside the effect of involution, can also utilize safe pressure relief device 6 that the negative pressure of fuel tank is reduced (as shown in Figure 4), make the valve head 41 of valve rod 4 head ends, can overcome the RETENTION BY SOILS of negative pressure in the fuel tank easily, and allow valve head 41 hightail valve port 11, recovery is driven valve and is communicated with oil gas to the activated carbon canister state, and the negative pressure in the fuel tank is eliminated immediately, allow the interior fuel oil energy of fuel tank supply rapidly to drain in the Carburetor, supply engine restarts running, with reach motorcycle topple over cut off oil spilling and set upright after, can recover to open the benefit of the gas channel of oil spilling cut-off valve rapidly automatically.

In sum, a kind of oil spilling cut-off valve that the utility model provides with safe pressure relief device, except when motorcycle is toppled over, have outside the effect of leading negative pressure in the fuel tank off, topple over when motorcycle and set upright after, also can bring into play fast quick-opening valve and connect the effect that multiplies each other of oil circuit, get everything ready really and can submit novel patent in accordance with the law for the novelty and the progressive that utilize on the industry.

Claims

1, a kind of oil spilling cut-off valve with safe pressure relief device is made of a valve body, a bonnet, a bottom flange and another safe pressure relief device; Wherein, be to be formed with a valve port, a suction chamber and a discharge chamber in this valve body: this valve port is between suction chamber and discharge chamber, is communicated with suction chamber and discharge chamber; Carry the assemblying body of a valve rod and another hammer body in this discharge chamber, and sealed, and this bottom flange has one in order to be communicated with the oil gas steam outlet pipe of discharge chamber and activated carbon canister by bottom flange; This suction chamber is sealed by bonnet, and this bonnet has one in order to be communicated with the oil gas suction tude of suction chamber and fuel tank; It is characterized in that: