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

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 safety pressure relief device

Technical Field

The utility model relates to an oil spilling trip valve, especially an oil spilling trip valve with safe pressure relief device.

Background

In order to prevent the oil leakage problem when the motorcycle is toppled, an oil-spilling cut-off valve is generally installed on an oil-gas passage between an oil-gas outlet of an oil tank of the motorcycle and an activated carbon tank, so that the oil-gas passage can be blocked and closed by the oil-spilling cut-off valve when the motorcycle is toppled, and the oil leakage is prevented.

The oil spill stop valve products in the market are designed according to the requirements, and mainly comprise a valve rod and another hammer body which are assembled in a valve body, wherein a spring with smaller spring pressure is arranged between the valve rod and the hammer body, and another spring with larger spring pressure is also arranged between the hammer body and the valve body.

Under the normal condition that the motorcycle is not toppled, the oil spilling stop valve is in a valve opening state, so that oil gas in the oil tank can be communicated to the active carbon tank through the oil spilling stop valve to be filtered and recovered, and then is communicated with the outside, the oil gas in the oil tank can be discharged outside through the oil gas passage, the phenomenon that the oil tank is deformed due to excessive pressure generated by evaporation of the oil gas in the oil tank is avoided, meanwhile, outside air can enter the oil tank, the negative pressure generated due to fuel consumption, namely when the liquid level of the fuel drops, in an air chamber of the oil tank is avoided, the normal oil supply operation of another oil supply pipeline connected between the carburetor and the oil tank is prevented from being blocked, and the normal oil supply and oil gas filtering and recovering operations can be kept when the motorcycle.

When the motorcycle is toppled (namely, when the valve body is toppled to cut off oil spill), the heavier hammer body generates gravity deviation, so that the spring can overcome the total weight of the hammer body, the smaller spring pressure spring, the valve rod and the like, and then the spring is linked to push the valve rod to a valve port closing state, so that an oil-gas passage between the oil tank and the activated carbon tank is blocked, and the purpose of cutting off the oil spill is achieved.

However, practical experience shows that when the motorcycle is toppled over, the engine of the motorcycle is still not flamed out, and fuel supplied for the operation of the engine is continuously consumed, at the moment, because the fuel overflow cut-off valve is actuated to close the valve, negative pressure is formed in an air chamber of the fuel tank due to the consumption of the fuel, and the negative pressure can be continuously increased for a period of time until the normal fuel supply operation of a fuel supply pipeline is blocked, so that the engine is automatically flamed out, but if the negative pressure exceeds the pressure which can be borne by the fuel tank, the fuel tank can be deformed or even cracked.

From this, in order to avoid the oil tank to take place to warp the phenomenon of breaking even, so this creation people gathers the experience of the special motorcycle equipment of pursuing of many years of making, has especially researched and developed an oil spilling trip valve with safe pressure relief device to this puzzlement to solve foretell problem do the utility model discloses a motive place.

Disclosure of Invention

The invention aims to solve the technical problem, namely, the invention provides an oil spilling cut-off valve with a safety pressure relief device aiming at the defects in the prior art, so as to solve the problem that the negative pressure generated in an oil draining tank can be released after a motorcycle is toppled and the oil spilling is cut off, and avoid the phenomenon that the oil tank is deformed or broken; and after the motorcycle is toppled, the oil spill is cut off and is righted, the oil supply passage can be quickly recovered.

The technical problem of the present invention is solved by the following technical solutions.

An oil overflow cut-off valve with a safe pressure relief device mainly comprises a valve body, an upper valve cover, a lower valve cover and another safe pressure relief device; wherein, a valve port, an air inlet chamber and an air outlet chamber are formed in the valve body: the valve port is positioned between the air inlet chamber and the air outlet chamber and is used for communicating the air inlet chamber and the air outlet chamber; the air outlet chamber is loaded with a combination body of a valve rod and another hammer body and is sealed by a lower valve cover, and the lower valve cover is provided with an oil gas outlet pipe for communicating the air outlet chamber and the activated carbon tank; the air inlet chamber is closed by an upper valve cover, and the upper valve cover is provided with an oil-gas inlet pipe for communicating the air inlet chamber with the oil tank; the method is characterized in that:

the pressure relief chamber and the pressure relief air passage are communicated with the air inlet chamber and the air outlet chamber, and a safe pressure relief device is assembled in the pressure relief chamber; the safety pressure relief device is composed of a spring and a ball valve, wherein the ball valve is arranged on the pressure relief air passage, a spring is arranged on the ball valve, and the spring elastically supports the ball valve on the pressure relief air passage of the pressure relief chamber.

The utility model has the advantages that:

when the motorcycle is toppled (namely the valve body is toppled to cut off oil spill), the negative pressure generated in the oil drainage tank is released by the safety pressure relief device to avoid the phenomenon that the oil tank is deformed or broken, and after the motorcycle is toppled and righted (namely the valve body is righted), the negative pressure in the oil tank is quickly reduced by the safety pressure relief device, so that the valve head can easily overcome the suction effect of the negative pressure in the oil tank, and the valve head can quickly return to the original state of communicating the oil and the gas by the valve to fulfill the aim of quickly supplying oil after the motorcycle is toppled to cut off the oil spill and righted.

With the above objects and features in mind, the present invention will be described in detail by referring to the following embodiments and the accompanying drawings:

drawings

Fig. 1 is an exploded perspective view illustrating the present invention.

Fig. 2 is a sectional view showing the present invention.

Fig. 3 is a schematic diagram illustrating the dumping status of the present invention.

Fig. 4 is a schematic view illustrating an open state of the safety pressure relief device according to the present invention.

Detailed Description

Fig. 1 is a schematic view showing the configuration of an oil spill shut-off valve with a safety pressure relief device according to a preferred embodiment of the present invention, which includes:

a valve body 1, an upper valve cover 2, a lower valve cover 3 and a safety pressure relief device 6; a valve port 11, an inlet chamber 12, an outlet chamber 13, a pressure relief chamber 14 and a pressure relief air passage 15 (as shown in fig. 2) are formed in the valve body 1, the valve port 11 is located between the inlet chamber 12 and the outlet chamber 13 to communicate the inlet chamber 12 and the outlet chamber 13, a combination of a valve rod 4 and another hammer 5 is loaded in the outlet chamber 13 and is sealed by a lower valve cover 3, and the lower valve cover 3 is provided with an oil gas outlet pipe 31; a pressure relief chamber 14 is arranged in the air inlet chamber 12, a pressure relief air passage 15 is arranged below the pressure relief chamber 14, the air inlet chamber 12 and the air outlet chamber 13 can be communicated through the pressure relief chamber 14 and the pressure relief air passage 15 and are sealed by the upper valve cover 2, the upper valve cover 2 is provided with an oil-gas inlet pipe 21, and the safety pressure relief device 6 is loaded in the pressure relief chamber 14; wherein,

the head end of the valve rod 4 is provided with a conical colloid valve head 41 (as shown in fig. 1), and the valve rod has the efficacy of tightly closing the valve port 11 and preventing oil gas leakage when the valve is closed; and the tail end of the valve rod 4 is provided with an outward-opened annular convex rib 42 and another inward-recessed spring accommodating groove 43, so that a spring 44 with smaller spring pressure is arranged in the accommodating groove 43, and the valve rod 4 is connected and sleeved on a hammer cover 53 of the hammer body 5 by the annular convex rib 42.

The hammer cover 53 is formed with a cover hole 55 (as shown in fig. 1) for inserting the valve rod 4, so that the valve rod 4 can be assembled on the hammer cover 53 by the annular rib 42 at the tail end thereof, and the spring 44 with smaller spring pressure can be loaded between the valve rod 4 and the hammer seat 51.

The weight of the hammer 5 is greater than that of the valve rod 4, and the hammer 5 is composed of a hammer base 51 and a hammer cover 53, the hammer base 51 is provided with external teeth 52 (as shown in fig. 1) for screwing the hammer cover 53 with internal teeth 54, and the bottom of the hammer base 51 is provided with a spring 56 with larger spring pressure.

The safety pressure relief device 6 is composed of a spring 62 and a ball valve 61 (as shown in fig. 1), the ball valve 61 is disposed on the pressure relief air passage 15 (as shown in fig. 2), and a spring 62 is disposed on the ball valve 61 to elastically support the ball valve 61 on the pressure relief air passage 15 of the pressure relief chamber 14.

When the motorcycle is toppled (i.e. when the valve body is toppled to cut off oil spill), the heavier hammer body 5 generates gravity deviation, so that the spring 56 can overcome the total weight of the hammer body 5, the smaller spring pressure spring 44 and the valve rod 4, and the like, and further the spring 44 is linked to push the valve rod to a valve port closing state (as shown in fig. 3), so as to block an oil-gas passage between the oil tank and the activated carbon tank, and achieve the purpose of cutting off the oil spill.

At this moment, the motorcycle engine is still not flamed out, and in the continuous consumption of the fuel for the engine operation, because the oil spilling stop valve is actuated to close the valve, negative pressure is formed in the air chamber of the oil tank due to the consumption of the fuel, the negative pressure is continuously increased, when the negative pressure exceeds the spring pressure of the spring 62 for supporting the ball valve 61, the spring 62 is compressed (as shown in fig. 4), so that the ball valve 61 is attracted by the negative pressure and separated from the pressure relief air passage 15, and the negative pressure in the oil tank can pass through the pressure relief chamber 14 by the air inlet chamber 12 and then is released into the air outlet chamber 13 by the pressure relief air passage 15 by the pressure relief chamber 14, thereby avoiding the phenomenon that the negative pressure in the oil tank is continuously increased, and further causing the deformation and even rupture of the oil.

When the motorcycle is inclined to actuate the oil spill stop valve, the motorcycle is then centered, except for the gravity sag resetting phenomenon of the hammer body 5 in the valve body 1 and the action of the hammer body 5 gravity pulling the valve rod 4 to reset together, the negative pressure of the oil tank can be reduced by the safety pressure relief device 6 (as shown in fig. 4), so that the valve head 41 at the head end of the valve rod 4 can easily overcome the suction holding action of the negative pressure in the oil tank, and the valve head 41 is quickly separated from the valve port 11, the state of communicating oil gas to the activated carbon tank by opening the valve is restored, and the negative pressure in the oil tank is immediately eliminated, so that the fuel oil in the oil tank can be quickly supplied and discharged into the carburetor, and the engine is restarted to operate, and the benefit of quickly and automatically recovering to open the oil gas channel of the oil spill stop valve after the motorcycle is inclined to cut off and centered.

To sum up, the utility model provides a pair of oil spilling trip valve with safe pressure relief device, except when the motorcycle emptys, have the efficiency of letting out negative pressure in the oil tank, after toppling over and rightting when the motorcycle, also can exert the multiplication efficiency of opening the valve rapidly and putting through the oil circuit, the certainty have novelty and the progressive nature that can supply the industry to utilize, according to law please novel patent.

Claims (1)

1. An oil overflow cut-off valve with a safe pressure relief device mainly comprises a valve body, an upper valve cover, a lower valve cover and another safe pressure relief device; wherein, a valve port, an air inlet chamber and an air outlet chamber are formed in the valve body: the valve port is positioned between the air inlet chamber and the air outlet chamber and is communicated with the air inlet chamber and the air outlet chamber; the air outlet chamber is internally provided with a combination body of a valve rod and another hammer body and is sealed by a lower valve cover, and the lower valve cover is provided with an oil gas outlet pipe for communicating the air outlet chamber with the activated carbon tank; the air inlet chamber is closed by an upper valve cover, and the upper valve cover is provided with an oil gas inlet pipe for communicating the air inlet chamber with the oil tank; the method is characterized in that:

the pressure relief chamber and the pressure relief air passage are communicated with the air inlet chamber and the air outlet chamber, and a safe pressure relief device is assembled in the pressure relief chamber; the safety pressure relief device is composed of a spring and a ball valve, wherein the ball valve is arranged on the pressure relief air passage, a spring is arranged on the ball valve, and the spring elastically supports the ball valve on the pressure relief air passage of the pressure relief chamber.

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