CN107829800B - Horizontal oil-gas separator for diesel engine - Google Patents
Horizontal oil-gas separator for diesel engine Download PDFInfo
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- CN107829800B CN107829800B CN201711060493.8A CN201711060493A CN107829800B CN 107829800 B CN107829800 B CN 107829800B CN 201711060493 A CN201711060493 A CN 201711060493A CN 107829800 B CN107829800 B CN 107829800B
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- valve
- air inlet
- hole
- inlet channel
- cavity
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 230000007704 transition Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 abstract description 26
- 239000007789 gas Substances 0.000 description 83
- 239000003921 oil Substances 0.000 description 25
- 239000010687 lubricating oil Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 9
- 239000010705 motor oil Substances 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/0011—Breather valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0038—Layout of crankcase breathing systems
- F01M2013/0044—Layout of crankcase breathing systems with one or more valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0038—Layout of crankcase breathing systems
- F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
- F01M2013/0061—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers
- F01M2013/0072—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0438—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a filter
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The horizontal oil-gas separator for the diesel engine comprises a shell (1) and a filter element (2), wherein a filter cavity (3) and a buffer cavity (4) are arranged in the shell (1), the filter cavity (3) is positioned at one lateral side of the buffer cavity (4), and the filter cavity (3) is communicated with the buffer cavity (4); an air inlet (5) for mixing and entering is arranged below the filter cavity (3) on the shell (1), and the air inlet (5) is communicated with the filter cavity (3) through an air inlet channel (6); an air outlet (7) is formed above the upper buffer cavity (4) of the shell (1), and an oil return port (8) is formed below the upper buffer cavity (4) of the shell (1); the filter element (2) is positioned in the filter cavity (3), the filter element (2) is of an annular structure, a regulating valve (9) is arranged above an air inlet channel (6) in the filter cavity (3), the outer diameter of the regulating valve (9) is smaller than the inner diameter of the filter element (2) but larger than the inner diameter of the air inlet channel (6), and the regulating valve (9) is eccentrically arranged relative to the air inlet channel (6); compared with the prior art, the invention has the characteristics of higher oil-gas separation efficiency and better use stability.
Description
Technical Field
The invention relates to the technical field of oil-gas separation of engines, in particular to a horizontal oil-gas separator for a diesel engine.
Background
The oil-gas separator is connected beside the crankcase ventilation valve of the engine, because the blow-by gas of the cylinder and the engine oil vapor can generate pressure when the engine works, the engine is damaged, so the crankcase ventilation valve is needed to generate vacuum, and because a large amount of engine oil vapor exists in the gas pumped out by the crankcase ventilation valve, the oil-gas separator mainly separates the engine oil vapor into engine oil and steam, so the engine oil flows back into the engine for reuse after being gathered by the bottom shell, and the steam flows to the engine for re-combustion, thereby preventing the engine from directly entering the atmosphere and causing atmospheric pollution.
The utility model discloses an oil-gas separator for a diesel engine, such as a China utility model with the application number 201510420038.9, which comprises a shell, wherein the shell is provided with a mixed gas inlet, a first oil-gas separation cavity, a second oil-gas separation cavity, a third oil-gas separation cavity, a manifold interface channel and a turbine interface channel; the second oil-gas separation cavity is internally provided with an oil-gas separation assembly, a sealing cover plate, a second oil return channel and a second waste gas channel, and the third oil-gas separation cavity is internally provided with a plurality of third oil liquid baffles, third oil return channels and third waste gas channels; the product designs a plurality of oil-gas separation cavities, and the oil-gas separation cavity is designed in a special way, so that the oil-gas separation can be completely separated, and engine oil is effectively prevented from being sucked into an engine; however, the oil-gas separator has the technical problems of complex structure, high manufacturing cost and the like. The utility model also discloses an oil-gas separator as in the Chinese utility model with the application number 201620915813.8, which comprises a shell (1) and an upper cover (2), wherein a hollow cavity is arranged in the shell (1), a first partition plate (3) is arranged on the shell (1), a second partition plate (4) is arranged on the upper cover (2), the hollow cavity is divided into a mixed gas inlet cavity (5) and a mixed gas separation cavity (6) by the first partition plate (3) and the second partition plate (4), a filter cavity (7) is arranged between the first partition plate (3) and the second partition plate (4), filter cotton (8) is arranged in the filter cavity (7), the bottom of the mixed gas inlet cavity (5) is communicated with a mixed gas inlet (9), the bottom of the gas-mixing separation cavity (6) is communicated with the oil return port (10), a valve seat (11) is arranged above the gas-mixing separation cavity (6), the valve seat (11) is in sealing connection with a valve cover (12), a valve outlet hole (14) is arranged in the center position in the valve seat (11), the valve outlet hole (14) is communicated with an air outlet (13) arranged on the side surface of the valve seat (11), and a valve core assembly is arranged above the valve outlet hole (14); although the whole is relatively simpler, the preparation cost is lower, as the mixed gas enters from bottom to top and the efficiency of the mixed gas entering the mixed gas separation cavity from one side of the mixed gas inlet cavity is lower, the pressure of the mixed gas inlet is easy to be higher, the situation of disengagement occurs, the mixed gas entering the mixed gas separation cavity has a supercharging effect, the flow rate of the mixed gas entering the mixed gas separation cavity is faster, and the efficiency of the mixed gas separation cavity on oil-gas separation is reduced. Furthermore, the utility model of China with the application number 201520630355.9 discloses an oil-gas separator, which relates to the field of mechanical manufacturing. The PCV valve comprises a PCV valve cover, a PCV valve base, a main shell, a filter element, a PCV valve diaphragm, a PCV valve spring, an O-shaped sealing ring and a bracket insert; the PCV valve cover, the PCV valve base and the main shell are sequentially and tightly connected, the side wall of the PCV valve base is provided with an air outlet, a PCV valve membrane is arranged between the PCV valve cover and the air outlet of the PCV valve base, a PCV valve spring is arranged between the PCV valve membrane and the PCV valve base, the side wall of the main shell is provided with a mixed air inlet, meanwhile, a filter element and an oil return port are arranged in the main shell, and the filter element comprises a filter element shell, filter cotton, a filter element regulating valve, a filter element seat, a filter element spring piece and a filter element lower shell; however, this structure cannot be integrated with the cylinder cover, the intake air can be only lateral intake air, and the intake air can not be downward intake air, and since the mixed gas of the chinese utility model with the application number 201620915813.8 is from the one-side channel filter element, the structure cannot be set on the chinese utility model with the application number 201620915813.8.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the horizontal oil-gas separator for the diesel engine is high in oil-gas separation efficiency and good in use stability.
The technical scheme adopted by the invention is as follows: the horizontal oil-gas separator for the diesel engine comprises a shell and a filter element, wherein a filter cavity and a buffer cavity are arranged in the shell, the filter cavity is positioned at one lateral side of the buffer cavity, and the filter cavity is communicated with the buffer cavity; an air inlet for mixing and entering is arranged below the filtering cavity on the shell, and the air inlet is communicated with the filtering cavity through an air inlet channel; an air outlet is formed in the shell above the buffer cavity, and an oil return port is formed in the shell below the buffer cavity; the filter element is positioned in the filter cavity, the filter element is positioned in the annular structure, a regulating valve is arranged above the air inlet channel in the filter cavity, the outer diameter of the regulating valve is smaller than the inner diameter of the filter element but larger than the inner diameter of the air inlet channel, and the regulating valve is eccentrically arranged relative to the air inlet channel.
Compared with the prior art, the invention has the following advantages:
The invention is characterized in that a filter cavity and a buffer cavity are arranged in the shell, the filter cavity is positioned at one lateral side of the buffer cavity and is communicated with the buffer cavity, an air inlet for mixing and entering is arranged below the filter cavity on the shell, and the air inlet is communicated with the filter cavity through an air inlet channel; an air outlet is arranged above the buffer cavity on the shell, and an oil return port is arranged below the buffer cavity on the shell; the filter element is positioned in the filter cavity, the filter element is of an annular structure, a regulating valve is arranged above the air inlet channel in the filter cavity, the outer diameter of the regulating valve is smaller than the inner diameter of the filter element but larger than the inner diameter of the air inlet channel, and the regulating valve is eccentrically arranged relative to the air inlet channel; firstly, after the mixed gas is filtered by the filter cavity, the gas needs to transversely enter the buffer cavity from the bottom, and the gas needs to go out from the gas outlet above the buffer cavity, so that the gas stays in the buffer cavity for a longer time, and further, a small part of oil remained in the gas can be separated in the buffer cavity, and the oil-gas separation efficiency is improved; secondly, the eccentric adjusting valve solves the problem that the adjusting valve cannot be arranged originally on the premise of keeping the volume of the shell unchanged, can effectively control the speed of the mixed gas, increases the filtering effect of the filter element and can also control the pressure of the crankcase; and the mixed gas is scattered around and directly rushed to the filter element under the action of the regulating valve after entering from the air inlet channel, so that the air inlet efficiency is improved, and the oil-gas separation efficiency is further improved.
Further, the air inlet is positioned at the side of the air inlet channel, and the lower end of the air inlet channel is sealed; after the device is arranged, not only can the splashed lubricating oil in the cylinder body be prevented from directly entering the air inlet channel, but also the mixed gas in the cylinder can be firstly collided with the lower end of the air inlet channel, part of the lubricating oil carried by the mixed gas can be separated in the collision process, and the mixed gas after entering the air inlet channel can also be collided with the wall of the air inlet channel directly, and part of the carried lubricating oil can be separated, so that the oil-gas separation efficiency can be further improved.
Further, a step surface is arranged on the inner wall of the lower end of the air inlet channel, the step surface is eccentrically arranged, the area of the step surface is 1/8-1/3 of the cross section area of the air inlet channel, and the height a of the step surface is 1-4 mm; after the arrangement, a part of gas below the mixed gas is blocked by the step surface to be upwards firstly under the action of the step surface, so that the air flow of the gas at other parts can not be completely acted on the step surface, the lubricating oil flowing down to the step surface on the inner wall of the air inlet channel is not easily influenced by the air flow to be upwards reversed and can directly return to the cylinder body from the air inlet, and the lubricating oil at the air inlet can not be upwards reversed under the action of the step surface (the height of the step surface is too high to seriously influence the unit air inflow and too low to play a role of guiding the bottom air flow and blocking the reverse flow of the lubricating oil at the air inlet) in a certain height range, thereby ensuring that the lubricating oil at the air inlet can smoothly flow back, and the oil flowing back can play a role of solidifying the oil gas in a part of the mixed gas, so that the oil-gas separation efficiency is further improved.
Further, the distance between the axis of the regulating valve and the axis of the air inlet channel is 1-5 mm; in the range, the mixed gas has ideal effect on the valve cover of the regulating valve, so that the condition that the valve cover is blocked due to large influence of air collecting flow on one side of the valve cover is not easy to occur, and the use stability of the regulating valve is ensured.
Further, the regulating valve comprises a valve seat and a valve cover, the lower end of the valve seat is fixed on the inner wall of the shell, and the interval between the axis of the valve seat and the axis of the air inlet channel is 1-5 mm; the valve cover is covered on the upper end surface of the valve seat; the valve seat is internally provided with a guide block, the guide block is provided with a sliding hole, the lower end of the valve cover is provided with a sliding rod in sliding fit with the sliding hole, one end of the sliding rod, which is far away from the valve cover, is provided with a limiting block, and a reset spring for resetting the valve cover is arranged between the limiting block and the guide block; the end, far away from the valve cover, of the sliding rod is provided with threads, and the limiting block is screwed at the end, far away from the valve cover, of the sliding rod; the regulating valve with the structure has the advantages of simple structure, fewer parts, easy assembly and good use stability.
Further, at least two arc-shaped concave parts are arranged on the upper end surface of the valve seat, the arc-shaped concave parts are uniformly distributed along the circumferential direction, the arc-shaped concave parts extend along the radial direction of the valve seat, the arc-shaped concave parts are opened on the inner wall and the outer wall of the valve seat, the included angle between the arc-shaped concave parts and the upper end surface of the valve seat is 0.5-5 degrees, and one end of the arc-shaped concave parts, which is close to the outer wall of the valve seat, is higher than one end of the arc-shaped concave parts, which is close to the inner wall of the valve seat; after the arc-shaped indent is arranged, the mixed gas can enter the filter element for filtering when the valve cover is in a covering state, and once the gas flow is enlarged to a certain value, the valve cover can be pushed open, so that the use range of the regulating valve is wider, and the valve cover is relatively less in movement, so that the service life of the spring is longer; after the included angle between the arc-shaped indent and the upper end surface of the valve seat is set, lubricating oil solidified and collected in the arc-shaped indent flows into the valve seat, so that not only can the blockage of the arc-shaped indent be prevented, but also the lubricating oil returns into the cylinder body from the air inlet channel, the influence of the lubricating oil on the filtering efficiency of the filter element is reduced, and the mixed gas is obliquely impacted onto the filter element under the guidance of the arc-shaped indent, so that the contact time of the mixed gas and the filter element is longer, and the separation efficiency of the mixed gas is also higher.
Preferably, the number of the arc-shaped concave parts is eight; after the arrangement, the air flow is relatively dispersed, the impact effect on the filter element is weak, the filter element is prevented from being scattered or broken by the air flow, and the service efficiency and the service life of the filter element are ensured.
Further, an annular arc-shaped bulge is arranged on the upper end face of the valve seat, and the axis of the arc-shaped bulge and the axis of the valve seat are on the same straight line; then after the arc bulge is arranged, the lower end surface of the valve cover is in line contact with the arc bulge, the attaching area is smaller, and the situation that the valve cover is stuck under the action of lubricating oil is less likely to occur, so that the working stability of the valve cover is ensured.
Further, a clearance is arranged below the filter cavity in the shell and is communicated with the filter cavity, and the clearance is positioned at one side of the air inlet channel far away from the oil return port; after the air avoidance is carried out, the yield of the shell during injection molding can be improved, the shock absorption effect can be achieved in the use process, and the air inlet channel can be partially cooled after lubricating oil is accumulated in the air avoidance, so that more oil gas in the mixed gas in the air inlet channel is solidified, and the separation efficiency is improved.
Further, the one-way valve comprises a one-way valve seat and a circular rubber valve plate, the oil return port sequentially comprises a collecting hole, a collecting hole and a backflow hole from top to bottom, the aperture of the collecting hole is larger than that of the backflow hole, the collecting hole is a horn-shaped hole, the aperture of the upper end of the collecting hole is larger than that of the lower end of the collecting hole and smaller than that of the collecting hole, the aperture of the lower end of the collecting hole is larger than that of the backflow hole, a valve hole is arranged at the lower end of the backflow hole, the aperture of the valve hole is larger than that of the backflow hole, the one-way valve seat is connected at the lower end of the oil return port, the rubber valve plate is positioned in the valve hole, the outer diameter of the rubber valve plate is larger than that of the backflow hole, a supporting ring for supporting the rubber valve plate is arranged in the one-way valve seat, at least two through holes are uniformly distributed at one end of the supporting ring near the one-way valve seat along the circumferential direction of the supporting ring, and cambered surface transition is arranged between the valve hole and the backflow hole; after the one-way valve is arranged, the mixed gas can be effectively prevented from entering the shell through the oil return port, so that the stability of the gas outlet is ensured; the one-way valve with the structure is simple in structure, fewer in parts, easy to form, simple and convenient to install and low in preparation cost, and after the cambered surface transition is arranged, when the rubber valve plate is jacked by the mixed gas, the rubber valve plate is in line contact with the cambered surface transition surface, so that the adhesion condition of the original surface contact can be effectively prevented, and the use stability and reliability of the rubber valve plate are ensured.
Drawings
Fig. 1 is a schematic structural view of a horizontal type oil-gas separator for a diesel engine according to the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
FIG. 3 is an enlarged view of a valve seat of a horizontal type oil-gas separator for a diesel engine according to the present invention.
Fig. 4 is a sectional view taken along line B-B in fig. 3.
Fig. 5 is an enlarged view of a valve cover of a horizontal oil-gas separator for a diesel engine according to the present invention.
Fig. 6 is an efficiency analysis chart of the horizontal type oil-gas separator for the diesel engine of the present invention.
Wherein, 1, a shell, 2, a filter element, 3, a filter cavity, 4, a buffer cavity, 5, an air inlet, 6, an air inlet channel, 7, an air outlet, 8, an oil return port, 81, a collecting hole, 82, a collecting hole, 83, a backflow hole, 84, a valve hole, 9, a regulating valve, 91, a valve seat, 92 and a valve cover, 93, guide blocks, 94, sliding holes, 95, sliding rods, 96, limiting blocks, 97, reset springs, 98, arc concave, 99, arc convex, 10, step surfaces, 11, clearance, 12, one-way valve seats, 13, rubber valve plates, 14, supporting rings, 15 and through holes.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
As shown in fig. 1,2, 3,4, 5 and 6, the invention provides a horizontal oil-gas separator for a diesel engine, which comprises a shell 1 and a filter element 2, wherein the shell 1 is divided into an upper part and a lower part, the injection molding of the shell 1 is convenient after the arrangement, the upper part and the lower part are welded to form the shell 1, and the filter element 2 is an existing filter element; the shell 1 is internally provided with a filter cavity 3 and a buffer cavity 4, the volume of the buffer cavity 4 is 1.5-3 times that of the filter cavity 3, the filter cavity 3 is positioned at one lateral side of the buffer cavity 4, and the filter cavity 3 is communicated with the buffer cavity 4; an air inlet 5 for the mixed gas to enter is arranged below the filter cavity 3 on the shell 1, the air inlet 5 is communicated with the filter cavity 3 through an air inlet channel 6, the mixed gas enters the air inlet channel 6 from the air inlet 5, then enters the filter element 2, the mixed gas is filtered by the filter element 2 to obtain the gas, the gas enters the filter cavity 3, and then enters the buffer cavity 4 and is discharged from an air outlet 7; an air outlet 7 is arranged above the buffer cavity 4 on the shell 1, an oil return port 8 is arranged below the buffer cavity 4 on the shell 1, oil filtered by the filter element 2 flows into the buffer cavity 4 from the bottom of the filter cavity 3, and then flows back into the cylinder body from the oil return port 8; the filter element 2 is positioned in the filter cavity 3, the filter element 2 is of an annular structure, a regulating valve 9 is arranged above the air inlet channel 6 in the filter cavity 3, the outer diameter of the regulating valve 9 is smaller than the inner diameter of the filter element 2 but larger than the inner diameter of the air inlet channel 6, and the regulating valve 9 is eccentrically arranged relative to the air inlet channel 6.
The air inlet 5 is located the side of air inlet channel 6, and air inlet 5 is located the air inlet channel 6 and keeps away from the one side of oil return opening 8, and the lower extreme of air inlet channel 6 is sealed, and air inlet 5 lower extreme and air inlet channel 6's bottom surface parallel and level, and lubricating oil can in time flow back to the cylinder body like this.
The inner wall of the lower end of the air inlet channel 6 is provided with a step surface 10, the step surface 10 is eccentrically arranged, the area of the step surface 10 is 1/8-1/3 of the cross section area of the air inlet channel 6, and the height a of the step surface 10 is 1-4 mm (3.5 mm in this example, 1mm, 2mm, 3mm or 4mm and the like can also be adopted). The side sets up air inlet 5 and step face 10's setting and makes the eccentric setting back governing valve 9 during operation, and the valve gap 92 atress is more even for the valve gap 92 opens more nimble and smooth and easy.
The distance between the axis of the regulating valve 9 and the axis of the air inlet channel 6 is 1-5 mm.
The regulating valve 9 comprises a valve seat 91 and a valve cover 92, the lower end of the valve seat 91 is fixed on the inner wall of the shell 1, and the interval between the axis of the valve seat 91 and the axis of the air inlet channel 6 is 1-5 mm (2.5 mm in this example, 1mm, 2mm, 3mm, 4mm or 5mm, etc.); the valve cover 92 covers the upper end surface of the valve seat 91; the valve seat 91 is internally provided with a guide block 93, the guide block 93 is provided with a slide hole 94, the lower end of the valve cover 92 is provided with a slide bar 95 in sliding fit with the slide hole 94, one end of the slide bar 95 away from the valve cover 92 is provided with a limiting block 96, and a reset spring 97 for resetting the valve cover 92 is arranged between the limiting block 96 and the guide block 93; the one end that slide bar 95 kept away from valve gap 92 is equipped with the screw thread, and stopper 96 spin closes the one end that slide bar 95 kept away from valve gap 92, can carry out different settings to reset spring 97's restoring force through the stopper 96 like this according to the user demand of different engines.
The upper end surface of the valve seat 91 is provided with at least two arc-shaped concave 98 (eight in this example, two, three, five, six or ten etc.), the radius of the circle corresponding to the arc-shaped concave 98 is 3-9 mm (5.5 mm in this example, 3mm, 4mm, 5mm, 8mm or 9mm etc.), the position of the arc-shaped concave 98 on the inner and outer walls of the valve seat 91 is provided with arc-shaped radial protrusions, the radial protrusions are used for prolonging the length of the arc-shaped concave 98 so that the effect of the arc-shaped concave 98 on gas diversion is more obvious, meanwhile, more solidified lubricating oil on the valve cover 92 can be collected, the arc-shaped concave 98 is uniformly distributed along the circumferential direction, the arc-shaped concave 98 extends along the radial direction of the valve seat 91, the arc-shaped concave 98 is opened on the inner and outer walls of the valve seat 91, the included angle between the arc-shaped concave 98 and the upper end surface of the valve seat 91 is 0.5-5 ° (2.5 °,1 °,2 °, 3.5 ° or 5 ° etc.), and one end of the arc-shaped concave 98 is close to one end of the valve seat 91 is close to the valve seat 91.
The upper end surface of the valve seat 91 is provided with an annular arc-shaped bulge 99, and the axis of the arc-shaped bulge 99 and the axis of the valve seat 91 are on the same straight line; the arcuate projections 99 are divided into eight segments by arcuate recesses 98.
The below of filter chamber 3 in casing 1 is equipped with keeps away empty 11, and the cross section of empty 11 is the arc, and this arc centre of a circle is on the axis of inlet channel 6, and keeps away empty 11 and filter chamber 3 intercommunication, and empty 11 is located inlet channel 6 and keeps away from the one side of oil return opening 8.
The oil return port 8 department is equipped with the check valve, the check valve includes check valve seat 12 and circular shape rubber valve piece 13, check valve seat 12 closes in the oil return port 8 department soon, the oil return port 8 is from last to including collecting hole 81 down in proper order, converging hole 82 and backward flow hole 83, the aperture of collecting hole 81 is greater than the aperture of backward flow hole 83, converging hole 82 is the tubaeform hole, the aperture of converging hole 82 upper end is greater than the aperture of converging hole 82 lower extreme and is less than the aperture of collecting hole 81, the aperture of converging hole 82 lower extreme is greater than the aperture of backward flow hole 83, the lower extreme of backward flow hole 83 is equipped with valve opening 84, and the aperture of valve opening 84 is greater than the aperture of backward flow hole 83, check valve seat 12 connects the lower extreme at the oil return port 8, rubber 13 is located valve opening 84, and the external diameter of rubber valve piece 13 is greater than the aperture of backward flow hole 83, be equipped with the support ring 14 to the rubber valve piece 13 support in the check valve seat 12, the one end of support ring 14 near check valve seat 12 is equipped with two at least through-holes 15, get into check valve seat 12 after setting up is that the mixed gas is difficult by through-hole 15 water conservancy diversion is more directly to be used on the rubber valve piece 13 easily, make the valve piece 13 be more evenly distributed to the through-hole 15, the effect is the through-hole 15 is the through hole 15 is the hole along the backward flow hole is more evenly distributed, the through hole is 15 has the effect to the hole 15 is the edge to the hole is the hole 15 is the edge to the back flow hole is the hole 15, the edge is has the effect is located.
In the description of the present invention, it is to be understood that the term "upper" is based on the direction or positional relationship shown in the drawings.
The foregoing description of the preferred embodiments of the present invention is provided for illustration and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed, and all changes made within the scope of the invention as independently claimed are within the scope of the invention.
Claims (8)
1. The utility model provides a horizontal oil and gas separator for diesel engine, it includes casing (1) and filter core (2), its characterized in that: a filter cavity (3) and a buffer cavity (4) are arranged in the shell (1), the filter cavity (3) is positioned at one lateral side of the buffer cavity (4), and the filter cavity (3) is communicated with the buffer cavity (4); an air inlet (5) for mixing and entering is arranged below the filter cavity (3) on the shell (1), and the air inlet (5) is communicated with the filter cavity (3) through an air inlet channel (6); an air outlet (7) is formed above the upper buffer cavity (4) of the shell (1), and an oil return port (8) is formed below the upper buffer cavity (4) of the shell (1); the filter element (2) is positioned in the filter cavity (3), the filter element (2) is of an annular structure, a regulating valve (9) is arranged above an air inlet channel (6) in the filter cavity (3), the outer diameter of the regulating valve (9) is smaller than the inner diameter of the filter element (2) but larger than the inner diameter of the air inlet channel (6), and the regulating valve (9) is eccentrically arranged relative to the air inlet channel (6); an empty space (11) is arranged below the filter cavity (3) in the shell (1), the empty space (11) is communicated with the filter cavity (3), and the empty space (11) is positioned at one side of the air inlet channel (6) far away from the oil return port (8); the utility model discloses a one-way valve, including a valve seat (12) and a circular rubber valve block (13), the oil return port (8) is from last to including collecting hole (81), converging hole (82) and backward flow hole (83) down in proper order, and the aperture of collecting hole (81) is greater than the aperture of backward flow hole (83), converging hole (82) are the tubaeform hole, and the aperture of converging hole (82) upper end is greater than the aperture of converging hole (82) lower extreme and is less than the aperture of converging hole (81), and the aperture of converging hole (82) lower extreme is greater than the aperture of backward flow hole (83), the lower extreme of backward flow hole (83) is equipped with valve opening (84), and the aperture of valve opening (84) is greater than the aperture of backward flow hole (83), the lower extreme of collecting hole (81) is located valve opening (84), and the external diameter of rubber valve block (13) is greater than the aperture of backward flow hole (83), be equipped with in one-way valve seat (12) to support ring (14) and support ring (14) are equipped with nearly through-hole (15) in the circumference direction, support ring (14) are equipped with at least two nearly through-hole (15), the valve hole (84) and the backflow hole (83) are in cambered surface transition.
2. The horizontal oil-gas separator for a diesel engine according to claim 1, wherein: the air inlet (5) is positioned at the side of the air inlet channel (6), and the lower end of the air inlet channel (6) is sealed.
3. The horizontal oil-gas separator for a diesel engine according to claim 2, wherein: the inner wall of the lower end of the air inlet channel (6) is provided with a step surface (10), the step surface (10) is eccentrically arranged, the area of the step surface (10) is 1/8-1/3 of the cross section area of the air inlet channel (6), and the height a of the step surface (10) is 1-4 mm.
4. The horizontal oil-gas separator for a diesel engine according to claim 1, wherein: the distance between the axis of the regulating valve (9) and the axis of the air inlet channel (6) is 1-5 mm.
5. The horizontal oil-gas separator for a diesel engine according to claim 1, wherein: the regulating valve (9) comprises a valve seat (91) and a valve cover (92), wherein the lower end of the valve seat (91) is fixed on the inner wall of the shell (1), and the distance between the axis of the valve seat (91) and the axis of the air inlet channel (6) is 1-5 mm; the valve cover (92) is covered on the upper end surface of the valve seat (91); the valve seat (91) is internally provided with a guide block (93), the guide block (93) is provided with a sliding hole (94), the lower end of the valve cover (92) is provided with a sliding rod (95) which is in sliding fit with the sliding hole (94), one end, far away from the valve cover (92), of the sliding rod (95) is provided with a limiting block (96), and a reset spring (97) for resetting the valve cover (92) is arranged between the limiting block (96) and the guide block (93); one end of the sliding rod (95) far away from the valve cover (92) is provided with threads, and a limiting block (96) is screwed at one end of the sliding rod (95) far away from the valve cover (92).
6. The horizontal oil-gas separator for diesel engine according to claim 5, wherein: the upper end face of disk seat (91) is equipped with two at least arc indent (98), and arc indent (98) are along circumference equipartition, radial extension of disk seat (91) is followed in arc indent (98), and arc indent (98) are at the inner and outer wall upper opening of disk seat (91), contained angle between arc indent (98) and disk seat (91) up end is 0.5 ~ 5, and the one end of the nearly disk seat (91) outer wall of arc indent (98) is higher than the one end of the nearly disk seat (91) inner wall of arc indent (98).
7. The horizontal oil-gas separator for diesel engine according to claim 6, wherein: the number of the arc-shaped concave grooves (98) is eight.
8. The horizontal oil-gas separator for a diesel engine according to claim 5 or 6, characterized in that: the upper end face of the valve seat (91) is provided with an annular arc-shaped bulge (99), and the axis of the arc-shaped bulge (99) and the axis of the valve seat (91) are on the same straight line.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711060493.8A CN107829800B (en) | 2017-11-02 | 2017-11-02 | Horizontal oil-gas separator for diesel engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711060493.8A CN107829800B (en) | 2017-11-02 | 2017-11-02 | Horizontal oil-gas separator for diesel engine |
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| CN107829800A CN107829800A (en) | 2018-03-23 |
| CN107829800B true CN107829800B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711060493.8A Active CN107829800B (en) | 2017-11-02 | 2017-11-02 | Horizontal oil-gas separator for diesel engine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6729333B2 (en) * | 2016-12-06 | 2020-07-22 | 三菱自動車工業株式会社 | Cylinder head cover and engine equipped with the same |
| CN109595053A (en) * | 2018-12-10 | 2019-04-09 | 宁波赛铂睿特汽车部件有限公司 | A kind of oil-gas separating device of engine |
| CN109595054B (en) * | 2018-12-10 | 2023-09-22 | 宁波赛铂睿特汽车部件有限公司 | Multi-level oil-gas separation device for automobile engine |
| CN109736918A (en) * | 2019-03-06 | 2019-05-10 | 江西五十铃发动机有限公司 | A kind of pressure self-adjusting formula crank case vent valve of combined filtration structure |
| CN112648043B (en) * | 2019-10-10 | 2022-03-22 | 上海汽车集团股份有限公司 | Automobile and engine and oil-gas separator thereof |
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| US6309436B1 (en) * | 1997-01-15 | 2001-10-30 | Filterwerk Mann & Hummel Gmbh | Device for separating liquid particles from a gas stream |
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| US6309436B1 (en) * | 1997-01-15 | 2001-10-30 | Filterwerk Mann & Hummel Gmbh | Device for separating liquid particles from a gas stream |
| JP2006316698A (en) * | 2005-05-12 | 2006-11-24 | Toyota Motor Corp | Oil mist treatment device |
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| CN107829800A (en) | 2018-03-23 |
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