CN211287838U - Oil return pipe of oil-gas separator - Google Patents
Oil return pipe of oil-gas separator Download PDFInfo
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- CN211287838U CN211287838U CN201822033805.2U CN201822033805U CN211287838U CN 211287838 U CN211287838 U CN 211287838U CN 201822033805 U CN201822033805 U CN 201822033805U CN 211287838 U CN211287838 U CN 211287838U
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Abstract
The utility model provides an oil and gas separator's oil return pipe relates to an oil return pipe. The crankcase gas return pipe solves the problems that an oil return pipe is not beneficial to oil return and crankcase gas easily leaks along the oil return pipe in the prior art. This oil and gas separator's time oil pipe, including returning the oil pipe, it produces oil end and oil-gas separation chamber UNICOM to return oil pipe oil feed end, it produces oil end and crankcase UNICOM to return oil pipe, sets gradually first valve, second valve from returning oil pipe oil feed end to returning oil pipe oil end, and the first valve block of first valve is located the top of first disk seat, and the second valve block of second valve is located the below of second disk seat, first valve block is connected on same root valve rod with the second valve block, the floater is connected to the upper end of valve rod, first valve block is the umbrella-shaped valve block with the second valve block, and the floater rises and can open first valve and close the second valve, and the floater descends and can close first valve and open the second valve. The utility model discloses have multistage excessive time oil return valve, improved the seal and prevented crankcase blowby, simple structure.
Description
Technical Field
The utility model belongs to the technical field of automobile engine, a oil and gas separator, especially an oil and gas separator's oil return pipe is related to.
Background
When the engine works, the gas in the crankcase can bring a small amount of oil into the combustion chamber for combustion, and the exhaust gas can have negative effects on the emission and environment of the internal combustion engine because the oil cannot be completely combusted. Therefore, the oil-gas separation efficiency must be increased to separate more oil from the crankcase exhaust gas and return it to the sump. After the waste gas flows through the oil-gas separation cavity on the engine cover to carry out liquid-gas separation, oil can flow back to the crankcase through an oil return pipe communicating the oil-gas separation cavity with the crankcase. However, because the oil-gas separation chamber has a certain negative pressure, if the direct pipeline communication can make the gas of the crankcase enter the oil-gas separation chamber to cause secondary pollution, the prior art is to arrange a one-way valve on the oil return pipe, but if the one-way valve is only a simple one-way valve formed by an umbrella-shaped valve plate, the gas can not be effectively prevented from leaking, and if the more complex one-way valve is used, the oil can not smoothly flow back.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem that prior art exists, provide an oil and gas separator's time oil pipe, this oil and gas separator's time oil pipe can effectively reduce the piston blowby gas, has the backward flow that does not influence fluid simultaneously.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides an oil return pipe of oil and gas separator, includes back oil pipe, back oil pipe oil feed end and oil-gas separation chamber UNICOM, back oil pipe goes out oil end and crankcase UNICOM, sets gradually first valve, second valve from returning oil pipe oil feed end to returning oil pipe oil end, and the first valve block of first valve is located the top of first disk seat, and the second valve block of second valve is located the below of second disk seat, first valve block is connected on same root valve rod with the second valve block, the floater is connected to the upper end of valve rod, first valve block is the umbrella-shaped valve block with the second valve block, and the floater rises and can open first valve and close the second valve, and the floater descends and can close first valve and open the second valve.
The working principle of an oil return pipe of the oil-gas separator is as follows: when the oil above the first valve accumulates to a certain amount, the floating ball floats upwards to open the first valve and close the second valve, the oil above the first valve flows into a cavity between the first valve and the second valve, namely flows into the upper part of the second valve, and after the oil flowing into the second valve reaches a certain amount, under the dual action of the weight of the oil on the second valve plate and the reduction of the buoyancy of the floating ball, the first valve is closed and the second valve is opened, so that the oil starts to accumulate above the first valve, and the second valve starts to discharge the oil into the crankcase. Such structure guarantees to be in the closed condition at the valve all the time under the circumstances that does not influence fluid circulation, thereby place the gas of crankcase and scurry, two valves have dual airtight effect, even have partial gas to enter into the back flow when replacing fluid, because this partial gas will advance the scrubbing action of twice fluid, also can make the most of fluid in the gas persist in fluid, in addition, be different from ordinary check valve meeting, the opening and shutting that utilizes the floater control valve block can make the valve block open and shut as big as possible, and ordinary check valve relies on fluidic not equidirectional flow to open and shut, so can not have great opening and shutting.
In the oil return pipe of the oil-gas separator, the second valve plate and the second valve seat hole are both larger than the first valve plate and the first valve seat hole. So as to reduce the resistance that first valve block opened and increase the fluid downforce that the second valve block received, be convenient for the second valve block to open.
In the oil return pipe of the oil-gas separator, the valve plate and the valve seat have mutually attracted magnetic force, and the valve plate and the valve seat are mutually attracted through a magnet. The magnetic force makes the valve block and the valve body have a certain binding force, the valve block is easy to close but difficult to open, namely, the valve block and the valve body can be separated only when the external acting force is large by a certain magnitude, the separating force is smaller along with the increase of the separating distance, the closing is just opposite, the binding force becomes larger and larger along with the reduction of the closed distance, thus, the valve cannot be continuously changed along with the continuous change of the external force to realize the continuous change of the opening, but is completely opened or closed only after the force reaches a threshold value, and the combination of the valve block and the valve seat can also make certain instant impact force on the valve seat instantly, thereby generating a vibration impact on the oil return pipe so as to facilitate the better discharge of the oil, and the advantage of utilizing the magnetic force is realized. When the cavity between the first valve and the second valve is filled with the oil in the half cavity, the weight of the oil counteracts the magnetic force between the second valve plate and the second valve body so as to open the second valve, and the buoyancy of the floating ball in the oil can counteract the sum of the magnetic forces of the first valve so as to open the first valve.
In the oil return pipe of the oil-gas separator, the upper half part of the cavity between the first valve and the second valve is communicated with the oil-gas separation cavity through the communicating pipe, so that gas with better quality separated by the oil-gas separation cavity is used as pressure supplement of the cavity between the first valve and the second valve, and oil can smoothly flow in the pipe body.
In the oil return pipe of the oil-gas separator, the communicating pipe is provided with a control valve for controlling the on-off of the communicating pipe, and when the engine does not work, the control valve is closed to prevent the gas in the crankcase from flowing upwards.
Compared with the prior art, the oil return pipe of the oil-gas separator has the following advantages:
the utility model discloses make the oil mixing pipe have multistage excessive oil return valve, improved the leakproofness and prevented the crankcase blowby, no matter whether automobile engine works, no matter have or not return fluid shutoff oil gallery, the homoenergetic guarantees to return oil pipe airtight, prevents the gaseous scurrying of crankcase when oil and gas separator is out of work and goes into, simple structure, convenient operation, it is with low costs.
Drawings
FIG. 1 is a schematic illustration of a first valve about to float;
FIG. 2 is a schematic view of the first valve in an open state;
FIG. 3 is a schematic illustration of the second valve about to open;
fig. 4 is a schematic view of the second valve opening to drain oil.
In the figure, an oil return pipe 1, a first valve plate 201, a first valve seat 202, a second valve plate 301, a second valve seat 302, a valve rod 4, a floating ball 5, a communicating pipe 6, a control valve 7 and an oil-gas separation cavity 8 are arranged.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, an oil return pipe 1 of oil and gas separator, including returning the oil pipe, it leads to with 8 UNICOM of oil-gas separation chamber to return oil pipe oil feed end, return oil pipe oil feed end and crankcase UNICOM, from returning oil pipe oil feed end to returning oil pipe oil feed end and setting gradually first valve, second valve, first valve block 201 of first valve is located the top of first disk seat 202, and second valve block 301 of second valve is located the below of second disk seat 302, first valve block is connected on same root valve rod 4 with the second valve block, the floater 5 is connected to the upper end of valve rod, first valve block is the umbrella-shaped valve block with the second valve block, and the floater rises and can open first valve and close the second valve, and the floater descends and can close first valve and open the second valve. The second valve plate and the second valve seat hole are both larger than the first valve plate and the first valve seat hole. So as to reduce the resistance that first valve block opened and increase the fluid downforce that the second valve block received, be convenient for the second valve block to open. The upper half part of the cavity between the first valve and the second valve is communicated with the oil-gas separation cavity through the communicating pipe 6, so that gas with better quality separated from the oil-gas separation cavity is used as pressure supplement of the cavity between the first valve and the second valve, and oil can smoothly flow in the pipe body. The communicating pipe is provided with a control valve 7 for controlling the communication of the communicating pipe, and the control valve is closed when the engine does not work, so that the gas in the crankcase is prevented from flowing upwards. In the oil return pipe of the oil-gas separator, the valve plate and the valve seat have magnetic force which attracts each other through a magnet, for example, an annular magnet may be disposed on the valve seat, and the valve plate is made of a ferromagnetic material, such as an iron plate, the magnitude of the magnetic force of the two valve plates may be the same or slightly different, so long as it is ensured that the valve can be opened by the buoyancy of the floating ball and the pressure of the liquid, and the specific magnitude of the magnetic force of the two valve plates needs to obtain the optimal setting parameter after being tested according to the actual equipment conditions. The magnetic force makes the valve block and the valve body have a certain binding force, the valve block is easy to close but difficult to open, namely, the valve block and the valve body can be separated only when the external acting force is large by a certain magnitude, the separating force is smaller along with the increase of the separating distance, the closing is just opposite, the binding force becomes larger and larger along with the reduction of the closed distance, thus, the valve cannot be continuously changed along with the continuous change of the external force to realize the continuous change of the opening, but is completely opened or closed only after the force reaches a threshold value, and the combination of the valve block and the valve seat can also make certain instant impact force on the valve seat instantly, thereby generating a vibration impact on the oil return pipe so as to facilitate the better discharge of the oil, and the advantage of utilizing the magnetic force is realized. When the cavity between the first valve and the second valve is filled with the oil in the half cavity, the weight of the oil counteracts the magnetic force between the second valve plate and the second valve body so as to open the second valve, and the buoyancy of the floating ball in the oil can counteract the sum of the magnetic forces of the first valve so as to open the first valve.
Fig. 1, 2, 3 and 4 are schematic diagrams of the movement process of a valve, and the working principle of an oil return pipe of the oil-gas separator is as follows: when the oil above the first valve accumulates to a certain amount, the floating ball floats upwards to open the first valve and close the second valve, the oil above the first valve flows into a cavity between the first valve and the second valve, namely flows into the upper part of the second valve, and after the oil flowing into the second valve reaches a certain amount, under the dual action of the weight of the oil on the second valve plate and the reduction of the buoyancy of the floating ball, the first valve is closed and the second valve is opened, so that the oil starts to accumulate above the first valve, and the second valve starts to discharge the oil into the crankcase. Such structure guarantees to be in the closed condition at the valve all the time under the circumstances that does not influence fluid circulation, thereby place the gas of crankcase and scurry, two valves have dual airtight effect, even have partial gas to enter into the back flow when replacing fluid, because this partial gas will advance the scrubbing action of twice fluid, also can make the most of fluid in the gas persist in fluid, in addition, be different from ordinary check valve meeting, the opening and shutting that utilizes the floater control valve block can make the valve block open and shut as big as possible, and ordinary check valve relies on fluidic not equidirectional flow to open and shut, so can not have great opening and shutting.
Although some terms are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The utility model provides an oil return pipe of oil and gas separator, includes back oil pipe, its characterized in that, return oil pipe oil feed end and oil-gas separation chamber UNICOM, return oil pipe oil outlet end and crankcase UNICOM, from returning oil pipe oil feed end to returning oil pipe oil outlet end and setting gradually first valve, second valve, the first valve block of first valve is located the top of first disk seat, and the second valve block of second valve is located the below of second disk seat, first valve block is connected on same root valve rod with the second valve block, the floater is connected to the upper end of valve rod, first valve block is the umbrella-shaped valve block with the second valve block, and the floater rises and can open first valve and close the second valve, and the decline can close first valve and open the second valve.
2. An oil return pipe of an oil separator as claimed in claim 1, wherein the second valve sheet and the second valve seat hole are larger than the first valve sheet and the first valve seat hole.
3. The oil return pipe of an oil-gas separator as claimed in claim 1, wherein a magnetic force is generated between the valve plate and the valve seat, the valve plate and the valve seat are attracted to each other by the magnet, when the oil in the half-cavity is filled in the cavity between the first valve and the second valve, the second valve is opened by the weight of the oil offsetting the magnetic force between the second valve plate and the second valve, and the first valve is opened by the buoyancy of the floating ball in the oil offsetting the magnetic force of the first valve.
4. An oil return pipe of an oil separator as claimed in claim 1, wherein an upper half of a cavity between the first valve and the second valve is communicated with the oil-gas separation chamber through a communicating pipe.
5. An oil return pipe of an oil separator as claimed in claim 4, wherein the communicating pipe is provided with a control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822033805.2U CN211287838U (en) | 2018-12-05 | 2018-12-05 | Oil return pipe of oil-gas separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822033805.2U CN211287838U (en) | 2018-12-05 | 2018-12-05 | Oil return pipe of oil-gas separator |
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| Publication Number | Publication Date |
|---|---|
| CN211287838U true CN211287838U (en) | 2020-08-18 |
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| CN201822033805.2U Active CN211287838U (en) | 2018-12-05 | 2018-12-05 | Oil return pipe of oil-gas separator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627938A (en) * | 2020-12-18 | 2021-04-09 | 一汽解放汽车有限公司 | Oil return system and oil return method thereof |
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2018
- 2018-12-05 CN CN201822033805.2U patent/CN211287838U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627938A (en) * | 2020-12-18 | 2021-04-09 | 一汽解放汽车有限公司 | Oil return system and oil return method thereof |
| CN112627938B (en) * | 2020-12-18 | 2022-02-18 | 一汽解放汽车有限公司 | Oil return system and oil return method thereof |
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