CN108999674B - Integrated one-way PCV valve - Google Patents

Integrated one-way PCV valve Download PDF

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Publication number
CN108999674B
CN108999674B CN201811167199.1A CN201811167199A CN108999674B CN 108999674 B CN108999674 B CN 108999674B CN 201811167199 A CN201811167199 A CN 201811167199A CN 108999674 B CN108999674 B CN 108999674B
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China
Prior art keywords
pcv valve
way
shell
valve
fixedly connected
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CN201811167199.1A
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CN108999674A (en
Inventor
王玮丰
王佳
马宝玲
张桂禄
刘玉龙
李立涛
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Hebei Chinaust Automotive Plastics Co Ltd
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Hebei Chinaust Automotive Plastics Co Ltd
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Priority to CN201811167199.1A priority Critical patent/CN108999674B/en
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Classifications

    • 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
    • F01M13/0011—Breather valves
    • F01M2013/0016—Breather valves with a membrane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Driven Valves (AREA)
  • Check Valves (AREA)

Abstract

The invention discloses an integrated one-way PCV valve, which belongs to the field of automobile ventilation control systems and comprises an upper one-way PCV valve shell and a lower one-way PCV valve shell, wherein the upper end of the upper one-way PCV valve shell is fixedly connected with a nylon interconnection bamboo node pipe, so that a one-way valve is added between an automobile engine and a crankshaft ventilation box, fuel mixed gas in the crankshaft ventilation box is controlled to enter the engine, and gas in the engine is prevented from entering the crankshaft ventilation box, so that the phenomenon of blowby of the engine is avoided, the safety is improved while the fuel efficiency of the engine is improved, the oil and gas particles in fuel steam discharged to the outside are reduced, the damage to the outside environment is reduced, the structure of a one-way flow-limiting diaphragm valve plate in the PCV valve is changed, the fuel steam doped with fine fuel particles is reduced to be adhered to the one-way flow-limiting diaphragm valve plate, the service life of the one-way flow-limiting diaphragm valve plate is prolonged, and the conduction effect of the one-way PCV valve is improved.

Description

Integrated one-way PCV valve
Technical Field
The invention relates to the field of automobile ventilation control systems, in particular to an integrated one-way PCV valve.
Background
During operation of the engine, the high pressure combustible mixture and combusted gases of the combustion chamber may leak more or less into the crankcase through the clearance between the piston assembly and the cylinder, causing blow-by. The components of the blowby gas are unburned fuel gas, water vapor, waste gas and the like, which dilutes engine oil, reduces the service performance of the engine oil and accelerates the oxidation and deterioration of the engine oil. The water vapor is condensed in the engine oil, so that oil sludge can be formed to block an oil way; acid gases in the exhaust gas mix into the lubrication system, which can lead to corrosion and accelerated wear of engine parts; the blowby gas also can cause the pressure of the crankcase to be too high to break the sealing of the crankcase and cause the leakage and loss of engine oil, and in order to prevent the too high pressure of the crankcase, the service life of the engine oil is prolonged, the abrasion and corrosion of parts are reduced, the oil leakage of an engine is prevented, and the ventilation of the crankcase is necessary.
The present ventilation control system on the automobile is characterized in that a one-way valve is required to be arranged between an engine and a crankshaft ventilation box, so that fuel vapor in the crankshaft ventilation box can enter the engine for combustion under a certain pressure difference, fuel is fully utilized, and gas in the engine is prevented from flowing into the crankshaft ventilation box.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems existing in the prior art, the invention aims to provide the integrated one-way PCV valve, which can realize that a one-way valve is added between an automobile engine and a crankshaft ventilation box, control fuel mixed gas in the crankshaft ventilation box to enter the engine, and prevent gas in the engine from entering the crankshaft ventilation box, so that the phenomenon of blowby of the engine is avoided, the fuel efficiency of the engine is improved, the safety is improved, the oil and gas particles in fuel vapor discharged to the outside are reduced, the damage to the outside environment is reduced, the structure of a one-way flow-limiting diaphragm valve plate in the one-way PCV valve is changed, the fuel vapor doped with fine fuel particles is reduced to adhere to the one-way flow-limiting diaphragm valve plate, the service life of the one-way flow-limiting diaphragm valve plate is prolonged, and the conduction effect of the one-way valve is improved.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
An integrated one-way PCV valve comprises an upper one-way PCV valve housing and a lower one-way PCV valve housing, wherein the upper end of the upper one-way PCV valve housing is fixedly connected with a nylon interconnection bamboo joint pipe, the left end of the lower one-way PCV valve housing is fixedly connected with an auxiliary firm connection wing, the left side of the lower one-way PCV valve housing is provided with an engine bolt connection ring, the engine bolt connection ring is fixedly connected with the auxiliary firm connection wing, a side edge positioning interconnection hole is cut in the middle of the engine bolt connection ring, an engine threaded pipe is fixedly connected in the side edge positioning interconnection hole, the lower end of the upper one-way PCV valve housing is fixedly connected with a middle housing clamping center connection flange, a one-way flow limiting diaphragm valve plate is sleeved on the middle housing clamping center connection flange, an oil gas communication through hole is cut at one end of the upper one-way PCV valve housing, which is close to the middle housing clamping center connection flange, the middle of the lower shell of the one-way PCV valve is fixedly connected with an upper half shell supporting column, a central positioning clamping groove is cut in the middle of the upper half shell supporting column, the central positioning clamping groove is matched with a central connecting flange of a middle shell clamping position, a one-way valve can be added between an automobile engine and a crankshaft ventilating box, fuel mixed gas in the crankshaft ventilating box is controlled to enter the engine, gas in the engine can be prevented from entering the crankshaft ventilating box, so that the phenomenon of gas channeling of the engine is avoided, the fuel efficiency of the engine is improved, the safety is improved, the oil and gas particles in fuel steam discharged to the outside are reduced, the damage to the external environment is reduced, the structure of the one-way flow limiting diaphragm valve plate in the one-way PCV valve is changed, the fuel steam doped with fine fuel particles is reduced to be adhered to the one-way flow limiting diaphragm valve plate, the service life of the one-way flow limiting diaphragm valve plate is prolonged, and the conduction effect of the one-way PCV valve is improved.
Further, the lower end of the lower shell of the one-way PCV valve is provided with a seal fit annular groove in an cutting way, an annular sealing ring is arranged in the seal fit annular groove, the inner side of the annular sealing ring is in sliding connection with the seal fit annular groove, and the annular sealing ring additionally arranged at the lower end of the lower shell of the one-way PCV valve is convenient for enhancing the air tightness of the lower shell of the one-way PCV valve when connected with an engine, so that the leakage of fuel vapor in the transmission process is reduced.
Further, fixedly connected with a plurality of screens bamboo joint rings on the nylon interconnection bamboo joint pipe, the screens bamboo joint ring is evenly arranged on the nylon interconnection bamboo joint pipe, through the screens bamboo joint ring that adds on the nylon interconnection bamboo joint pipe, the nylon interconnection bamboo joint pipe of the upper end of the upper casing of one-way PCV valve of reinforcing and nylon pipe are connected compactedness, reduce the leak of oil gas.
Further, the nylon interconnection bamboo node pipe upside is equipped with the passageway valve flow restrictor, passageway valve flow restrictor outer end and nylon interconnection bamboo node pipe upper end fixed connection, through the passageway valve flow restrictor of addding on the nylon interconnection bamboo node pipe, be convenient for restrict the fuel steam volume through nylon interconnection bamboo node pipe, prevent that the too big damage that causes the valve body of fuel steam flow.
Further, the lower end of the upper half shell supporting column is fixedly connected with a lower half shell auxiliary supporting rib plate, the lower half shell auxiliary supporting rib plate is located at the center of the upper end of the lower shell of the unidirectional PCV valve, and the lower half shell auxiliary supporting rib plate additionally arranged at the lower end of the upper half shell supporting column is convenient for reinforcing the support of the lower half shell auxiliary supporting rib plate to the upper half shell supporting column, so that the unidirectional current-limiting diaphragm valve plate is convenient for bending and unfolding under the pressure of fuel steam, and the fuel steam passes through the valve body.
Further, through ultrasonic welding between the upper shell of the one-way PCV valve and the lower shell of the one-way PCV valve, the welding position is the joint of the inclined plane of the lower end of the upper shell of the one-way PCV valve and the cylindrical angle of the lower shell of the one-way PCV valve, and through ultrasonic welding between the upper shell of the one-way PCV valve and the lower shell of the one-way PCV valve, the connection of the upper shell of the one-way PCV valve and the lower shell of the one-way PCV valve is convenient to strengthen, and the leakage of fuel steam is reduced.
Further, nanometer oleophobic diaphragm layer of unidirectional current limiting diaphragm valve block lower extreme fixedly connected with, nanometer oleophobic diaphragm layer closely laminates with unidirectional current limiting diaphragm valve block lower extreme, through the nanometer oleophobic diaphragm layer that adds at unidirectional current limiting diaphragm valve block lower extreme, is convenient for reduce the oil gas granule adhesion in the fuel steam on the unidirectional current limiting diaphragm valve block.
Further, a diaphragm valve plate center positioning hole is cut in the middle of the unidirectional current-limiting diaphragm valve plate, the diaphragm valve plate center positioning hole is matched with the middle shell clamping center connecting flange, and the unidirectional current-limiting diaphragm valve plate is convenient to strengthen and stably connected with the middle shell clamping center connecting flange through the matching of the diaphragm valve plate center positioning hole and the middle shell clamping center connecting flange.
Further, three elastic reset extension reeds are fixedly connected to the lower end of the unidirectional current-limiting diaphragm valve plate, the three elastic reset extension reeds are uniformly distributed at the lower end of the unidirectional current-limiting diaphragm valve plate, the elastic reset extension reeds are tightly attached to the nanometer oleophobic diaphragm layer, and the elastic reset extension reeds additionally arranged on the unidirectional current-limiting diaphragm valve plate are convenient for enhancing resilience of the unidirectional current-limiting diaphragm valve plate and slowing down bending aging of the unidirectional current-limiting diaphragm valve plate.
Further, three oil gas decomposition strain culture substrates are fixedly connected to the lower ends of the unidirectional current limiting diaphragm valve plates, the oil gas decomposition strain culture substrates are uniformly distributed at the lower ends of the unidirectional current limiting diaphragm valve plates, the oil gas decomposition strain culture substrates and the elastic reset extension reeds are distributed in a staggered mode, the oil gas decomposition strain culture substrates are filled with spore throwing yeast hydrocarbon degradation strain balls, the spore throwing yeast hydrocarbon degradation strain balls are densely distributed in the oil gas decomposition strain culture substrates, and the oil gas decomposition strain culture substrates additionally arranged on the unidirectional current limiting diaphragm valve plates facilitate decomposition of oil gas particles adhered to the unidirectional current limiting diaphragm valve plates.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) According to the scheme, the one-way valve can be added between the automobile engine and the crankshaft ventilation box, the fuel mixed gas in the crankshaft ventilation box is controlled to enter the engine, and meanwhile, the gas in the engine can be prevented from entering the crankshaft ventilation box, so that the gas channeling phenomenon of the engine is avoided, the safety is improved while the fuel efficiency of the engine is increased, the fuel gas particles in the fuel gas vapor discharged to the outside are reduced, the damage to the outside environment is reduced, the structure of the one-way flow-limiting diaphragm valve plate in the one-way PCV valve is changed, the fuel gas doped with fine fuel particles is reduced to be adhered to the one-way flow-limiting diaphragm valve plate, the service life of the one-way flow-limiting diaphragm valve plate is prolonged, and the conduction effect of the one-way PCV valve is improved.
(2) The annular sealing ring is arranged in the annular sealing ring, the inner side of the annular sealing ring is in sliding connection with the annular sealing ring, and the annular sealing ring is additionally arranged at the lower end of the lower shell of the one-way PCV valve, so that the air tightness of the lower shell of the one-way PCV valve when the lower shell of the one-way PCV valve is connected with an engine is conveniently enhanced, and the leakage of fuel vapor in the transmission process is reduced.
(3) The nylon interconnection bamboo joint pipe is fixedly connected with a plurality of screens bamboo joint rings, and the screens bamboo joint rings are evenly arranged on the nylon interconnection bamboo joint pipe, through the screens bamboo joint rings that add on the nylon interconnection bamboo joint pipe, the nylon interconnection bamboo joint pipe of the upper end of the upper shell of the unidirectional PCV valve of reinforcing is convenient for be connected compactedness with the nylon pipe, reduces the leakage of oil gas.
(4) The nylon interconnection bamboo joint pipe upside is equipped with passageway valve flow restrictor, passageway valve flow restrictor outer end and nylon interconnection bamboo joint pipe upper end fixed connection, through the passageway valve flow restrictor of add on nylon interconnection bamboo joint pipe, is convenient for restrict the fuel steam volume through nylon interconnection bamboo joint pipe, prevents that the too big damage that causes the valve body of fuel steam flow.
(5) The lower end of the upper half shell supporting column is fixedly connected with the lower half shell auxiliary supporting rib plate, the lower half shell auxiliary supporting rib plate is located at the center of the upper end of the lower shell of the unidirectional PCV valve, and the lower half shell auxiliary supporting rib plate additionally arranged at the lower end of the upper half shell supporting column is convenient for reinforcing the support of the lower half shell auxiliary supporting rib plate to the upper half shell supporting column, so that the unidirectional flow limiting diaphragm valve plate is convenient for bending and unfolding under the pressure of fuel steam, and the fuel steam passes through the valve body.
(6) Through ultrasonic welding, the welding position is the lower end inclined plane department of the upper shell of the one-way PCV valve and the cylindrical angle laminating department of the lower shell of the one-way PCV valve between the upper shell of the one-way PCV valve and the lower shell of the one-way PCV valve, through ultrasonic welding, the connection of the upper shell of the one-way PCV valve and the lower shell of the one-way PCV valve is convenient to strengthen, and the leakage of fuel steam is reduced.
(7) The nanometer oleophobic membrane layer is fixedly connected to the lower end of the unidirectional current-limiting membrane valve plate, the nanometer oleophobic membrane layer is tightly attached to the lower end of the unidirectional current-limiting membrane valve plate, and oil gas particles in fuel vapor are conveniently reduced to be adhered to the unidirectional current-limiting membrane valve plate through the nanometer oleophobic membrane layer additionally arranged at the lower end of the unidirectional current-limiting membrane valve plate.
(8) The middle of the unidirectional current-limiting diaphragm valve plate is provided with a diaphragm valve plate center positioning hole which is matched with the middle shell clamping center connecting flange, and the unidirectional current-limiting diaphragm valve plate is convenient to strengthen and firmly joint with the middle shell clamping center connecting flange through the matching of the diaphragm valve plate center positioning hole and the middle shell clamping center connecting flange.
(9) The elastic reset extension reed is closely attached to the nanometer oleophobic diaphragm layer, and the elastic reset extension reed additionally arranged on the unidirectional current-limiting diaphragm valve plate is convenient for enhancing the rebound of the unidirectional current-limiting diaphragm valve plate and slowing down the bending aging of the unidirectional current-limiting diaphragm valve plate.
(10) Three oil gas decomposition strain culture substrates are fixedly connected to the lower ends of the unidirectional current limiting diaphragm valve plates, the oil gas decomposition strain culture substrates are uniformly distributed at the lower ends of the unidirectional current limiting diaphragm valve plates, the oil gas decomposition strain culture substrates and the elastic reset extension reeds are distributed in a staggered mode, the oil gas decomposition strain culture substrates are filled with Sporobusta hydrocarbon degradation strain balls, the Sporobusta hydrocarbon degradation strain balls are densely distributed in the oil gas decomposition strain culture substrates, and the oil gas decomposition strain culture substrates additionally arranged on the unidirectional current limiting diaphragm valve plates facilitate decomposition of oil gas particles adhered to the unidirectional current limiting diaphragm valve plates.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a front semi-sectional view of the present invention;
FIG. 4 is a schematic cross-sectional elevation view of the present invention;
FIG. 5 is a schematic diagram of the structure shown at A in FIG. 4;
FIG. 6 is a schematic structural view of a one-way restriction diaphragm valve plate portion of the present invention.
The reference numerals in the figures illustrate:
the device comprises a 1 unidirectional PCV valve upper shell, a 2 unidirectional PCV valve lower shell, a 3 auxiliary stable connection fin, a 4 engine bolt connection ring, a 5-ring sealing ring, a 6 nylon interconnection bamboo joint pipe, a 7-clamping bamboo joint ring, an 8-channel valve flow limiting nozzle, a 9-middle shell clamping center connecting flange, a 10 unidirectional flow limiting diaphragm valve plate, a 11 upper half shell supporting column, a 12 lower half shell auxiliary supporting rib plate, a 13 hydro-pneumatic decomposition strain culture substrate, a 14 engine threaded pipe, a 15-diaphragm valve plate center positioning hole and a 16 elastic reset extension reed.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "engaged/connected," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, may be a detachable connection, or may be an integral connection, may be a mechanical connection, may be an electrical connection, may be a direct connection, may be an indirect connection via an intermediary, may be a communication between two elements, and for one of ordinary skill in the art, the specific meaning of the terms in this disclosure may be understood in a specific case.
Example 1:
referring to FIGS. 1-6, an integrated one-way PCV valve comprises an upper one-way PCV valve housing 1 and a lower one-way PCV valve housing 2, wherein the upper end of the upper one-way PCV valve housing 1 is fixedly connected with a nylon interconnection bamboo joint pipe 6, the left end of the lower one-way PCV valve housing 2 is fixedly connected with an auxiliary firm connection wing plate 3, the left side of the lower one-way PCV valve housing 2 is provided with an engine bolt connection ring 4, the engine bolt connection ring 4 is fixedly connected with the auxiliary firm connection wing plate 3, a side edge positioning interconnection hole is cut in the middle of the engine bolt connection ring 4, an engine threaded pipe 14 is fixedly connected in the side edge positioning interconnection hole, the lower end of the upper one-way PCV valve housing 1 is fixedly connected with a middle shell clamping center connection flange 9, a one-way flow limiting diaphragm valve plate 10 is sleeved on the middle shell clamping center connection flange 9, an oil gas connection through hole is cut at one end of the upper one-way PCV valve housing 1 close to the middle shell clamping center connection flange 9, the middle of the lower shell 2 of the one-way PCV valve is fixedly connected with the upper half shell support column 11, the middle of the upper half shell support column 11 is provided with a central positioning clamping groove, the central positioning clamping groove is matched with the central connecting flange 9 of the middle shell clamping position, a one-way valve can be added between an automobile engine and a crankshaft ventilation box to control fuel mixed gas in the crankshaft ventilation box to enter the engine, and simultaneously, the gas in the engine can be prevented from entering the crankshaft ventilation box, so that the phenomenon of blowby of the engine is avoided, the fuel efficiency of the engine is improved, the safety is improved, the fuel particles in fuel vapor discharged to the outside are reduced, the damage to the outside environment is reduced, the structure of the one-way flow limiting diaphragm valve plate in the one-way PCV valve is changed, the fuel vapor doped with fine fuel particles is reduced to be adhered on the one-way flow limiting diaphragm valve plate, the service life of the one-way flow limiting diaphragm valve plate is prolonged, and the conduction effect of the one-way PCV valve is improved.
The sealing annular groove is formed in the lower end of the lower shell 2 of the one-way PCV valve, the annular sealing ring 5 is arranged in the sealing annular groove, the inner side of the annular sealing ring 5 is in sliding connection with the sealing annular groove, the sealing performance of the lower shell 2 of the one-way PCV valve is enhanced conveniently by the annular sealing ring 5 additionally arranged at the lower end of the lower shell 2 of the one-way PCV valve, the leakage of fuel vapor in the transmission process is reduced, the clamping bamboo joint rings 7 are fixedly connected to the nylon Long Hulian bamboo joint pipe 6, the clamping bamboo joint rings 7 are uniformly distributed on the nylon interconnection bamboo joint pipe 6, the connection tightness between the nylon interconnection bamboo joint pipe 6 and the nylon pipe is facilitated by the clamping bamboo joint rings 7 additionally arranged on the nylon interconnection bamboo joint pipe 6, the leakage of oil gas is reduced, the channel valve flow limiting mouth 8 is arranged at the upper side of the nylon interconnection bamboo joint pipe 6, the outer end of the channel valve flow limiting mouth 8 is fixedly connected with the upper end of the nylon interconnection bamboo joint pipe 6, and the channel valve flow limiting mouth 8 additionally arranged on the nylon interconnection bamboo joint pipe 6 is convenient to limit the fuel vapor flow through the channel valve limiting mouth 8 additionally arranged on the nylon interconnection bamboo joint pipe 6, and the fuel vapor flow through the nylon interconnection bamboo joint pipe 6 is prevented from damaging the valve body.
The lower end of the upper half shell supporting column 11 is fixedly connected with the lower half shell auxiliary supporting rib plate 12, the lower half shell auxiliary supporting rib plate 12 is located at the center of the upper end of the unidirectional PCV valve lower shell 2, the lower half shell auxiliary supporting rib plate 12 is additionally arranged at the lower end of the upper half shell supporting column 11, supporting of the upper half shell supporting column 11 by the lower half shell auxiliary supporting rib plate 12 is facilitated to be enhanced, further the unidirectional current limiting diaphragm valve sheet 10 is facilitated to be bent and unfolded under the pressure of fuel vapor, the fuel vapor passes through the valve body, ultrasonic welding is conducted between the unidirectional PCV valve upper shell 1 and the unidirectional PCV valve lower shell 2, the welding position is the joint of the inclined surface of the lower end of the unidirectional PCV valve upper shell 1 and the cylindrical surface angle of the unidirectional PCV valve lower shell 2, and the connection of the unidirectional PCV valve upper shell 1 and the unidirectional PCV valve lower shell 2 is facilitated to be enhanced through ultrasonic welding, and the leakage of the fuel vapor is reduced.
The nanometer oleophobic membrane layer is fixedly connected to the lower end of the unidirectional current-limiting membrane valve block 10, the nanometer oleophobic membrane layer is tightly attached to the lower end of the unidirectional current-limiting membrane valve block 10, oil gas particles in fuel vapor are conveniently reduced to adhere to the unidirectional current-limiting membrane valve block 10 through the nanometer oleophobic membrane layer additionally arranged at the lower end of the unidirectional current-limiting membrane valve block 10, a membrane valve block center positioning hole 15 is cut in the middle of the unidirectional current-limiting membrane valve block 10, the membrane valve block center positioning hole 15 is matched with the middle shell clamping center connecting flange 9, and the unidirectional current-limiting membrane valve block 10 is conveniently and firmly connected with the middle shell clamping center connecting flange 9 through the matching of the membrane valve block center positioning hole 15 and the middle shell clamping center connecting flange 9.
The lower end of the unidirectional current-limiting diaphragm valve plate 10 is fixedly connected with three elastic reset extension reeds 16, the three elastic reset extension reeds 16 are uniformly distributed at the lower end of the unidirectional current-limiting diaphragm valve plate 10, the elastic reset extension reeds 16 are tightly attached to a nanometer oleophobic diaphragm layer, the rebound of the unidirectional current-limiting diaphragm valve plate 10 is conveniently enhanced by the elastic reset extension reeds 16 additionally arranged on the unidirectional current-limiting diaphragm valve plate 10, the bending aging of the unidirectional current-limiting diaphragm valve plate 10 is slowed down, the lower end of the unidirectional current-limiting diaphragm valve plate 10 is fixedly connected with three oil-gas decomposition strain culture substrates 13, the oil-gas decomposition strain culture substrates 13 are uniformly distributed at the lower end of the unidirectional current-limiting diaphragm valve plate 10, the oil-gas decomposition strain culture substrates 13 and the elastic reset extension reeds 16 are distributed in a staggered manner, the oil-gas-decomposition strain culture substrates 13 are filled with the spore-throwing yeast hydrocarbon degradation strain balls, the spore-throwing yeast hydrocarbon degradation strain balls are densely distributed in the oil-gas decomposition strain culture substrates 13, and the oil-gas particles adhered on the unidirectional current-limiting diaphragm valve plate 10 are conveniently decomposed by the oil-gas decomposition particles additionally arranged on the unidirectional current-limiting diaphragm valve plate 10.
According to the invention, the unidirectional flow limiting diaphragm valve plate 10 with a special structure, the three elastic reset extension reeds 16, the corresponding unidirectional PCV valve upper shell 1 and unidirectional PCV valve lower shell 2 can be used for adding the unidirectional valve between an automobile engine and a crankshaft ventilation box, controlling fuel mixed gas in the crankshaft ventilation box to enter the engine, and preventing gas in the engine from entering the crankshaft ventilation box, so that the phenomenon of blowby of the engine is avoided, the fuel efficiency of the engine is improved, the safety is improved, the fuel particles in fuel vapor discharged to the outside are reduced, the damage to the outside is reduced, the structure of the unidirectional flow limiting diaphragm valve plate in the unidirectional PCV valve is changed, the fuel vapor doped with fine fuel particles is reduced to be adhered to the unidirectional flow limiting diaphragm valve plate, the service life of the unidirectional flow limiting diaphragm valve plate is prolonged, and the conduction effect of the unidirectional PCV valve is improved.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.

Claims (7)

1. An integrated one-way PCV valve, characterized in that: the one-way PCV valve comprises an upper one-way PCV valve shell (1) and a lower one-way PCV valve shell (2), wherein the upper end of the upper one-way PCV valve shell (1) is fixedly connected with a nylon interconnection bamboo joint pipe (6), the left end of the lower one-way PCV valve shell (2) is fixedly connected with an auxiliary firm connection wing plate (3), the left side of the lower one-way PCV valve shell (2) is provided with an engine bolt connection ring (4), the engine bolt connection ring (4) is fixedly connected with the auxiliary firm connection wing plate (3), a side edge positioning interconnection hole is cut in the middle of the engine bolt connection ring (4), the side edge positioning interconnection hole is internally fixedly connected with an engine threaded pipe (14), the lower end of the upper one-way PCV valve shell (1) is fixedly connected with a middle shell clamping position central connection flange (9), one-way flow limiting diaphragm valve plate (10) is sleeved on the middle shell clamping position central connection flange (9), one end of the upper one-way PCV valve shell (1) is close to the middle shell clamping position central connection flange (9) is cut out of an oil gas communication through hole, the middle shell (2) is fixedly connected with an upper half shell (11) clamping position center positioning flange (11), and the middle shell clamping center is matched with a middle positioning flange (11) clamping center positioning flange, and a middle positioning flange is matched with a positioning center positioning flange;
the nylon-interconnected bamboo joint pipe (6) is fixedly connected with a plurality of clamping bamboo joint rings (7), the clamping bamboo joint rings (7) are uniformly distributed on the nylon-interconnected bamboo joint pipe (6), a channel valve flow limiting nozzle (8) is arranged on the upper side of the nylon-interconnected bamboo joint pipe (6), and the outer end of the channel valve flow limiting nozzle (8) is fixedly connected with the upper end of the nylon-interconnected bamboo joint pipe (6);
the lower end of the unidirectional current-limiting diaphragm valve plate (10) is fixedly connected with a nano oleophobic diaphragm layer, and the nano oleophobic diaphragm layer is tightly attached to the lower end of the unidirectional current-limiting diaphragm valve plate (10).
2. An integrated one-way PCV valve according to claim 1, wherein: the one-way PCV valve is characterized in that a seal fit annular groove is cut at the lower end of the lower shell (2) of the one-way PCV valve, an annular sealing ring (5) is arranged in the seal fit annular groove, and the inner side of the annular sealing ring (5) is in sliding connection with the seal fit annular groove.
3. An integrated one-way PCV valve according to claim 1, wherein: the lower end of the upper half shell supporting column (11) is fixedly connected with a lower half shell auxiliary supporting rib plate (12), and the lower half shell auxiliary supporting rib plate (12) is positioned at the center of the upper end of the lower shell (2) of the one-way PCV valve.
4. An integrated one-way PCV valve according to claim 1, wherein: the one-way PCV valve is characterized in that the one-way PCV valve upper shell (1) and the one-way PCV valve lower shell (2) are welded by ultrasonic waves, and the welding position is the joint of the inclined surface of the lower end of the one-way PCV valve upper shell (1) and the cylindrical surface angle of the one-way PCV valve lower shell (2).
5. An integrated one-way PCV valve according to claim 1, wherein: a diaphragm valve plate center positioning hole (15) is formed in the middle of the unidirectional current-limiting diaphragm valve plate (10), and the diaphragm valve plate center positioning hole (15) is matched with the middle shell clamping center connecting flange (9).
6. An integrated one-way PCV valve according to claim 1, wherein: the three elastic reset extension reeds (16) are fixedly connected to the lower end of the unidirectional current-limiting diaphragm valve plate (10), the three elastic reset extension reeds (16) are uniformly distributed at the lower end of the unidirectional current-limiting diaphragm valve plate (10), and the elastic reset extension reeds (16) are tightly attached to the nanometer oleophobic diaphragm layer.
7. An integrated one-way PCV valve according to claim 1 or 6, characterized in that: the culture device is characterized in that three oil-gas decomposition strain culture substrates (13) are fixedly connected to the lower ends of the unidirectional current-limiting diaphragm valve plates (10), the oil-gas decomposition strain culture substrates (13) are uniformly distributed at the lower ends of the unidirectional current-limiting diaphragm valve plates (10), the oil-gas decomposition strain culture substrates (13) and the elastic reset extension reeds (16) are staggered, the oil-gas decomposition strain culture substrates (13) are filled with spore-throwing yeast hydrocarbon degradation strain balls, and the spore-throwing yeast hydrocarbon degradation strain balls are densely distributed in the oil-gas decomposition strain culture substrates (13).
CN201811167199.1A 2018-10-08 2018-10-08 Integrated one-way PCV valve Active CN108999674B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101575997A (en) * 2009-06-05 2009-11-11 上海万捷汽车控制***有限公司 Diaphragm type PCV valve of crankcase ventilation system
CN101881225A (en) * 2010-06-17 2010-11-10 重庆长安汽车股份有限公司 Check valve for engine
JP2011236854A (en) * 2010-05-12 2011-11-24 Honda Motor Co Ltd Device for reflux of blow-by gas
CN103195616A (en) * 2013-04-24 2013-07-10 河北亚大汽车塑料制品有限公司 Fuel steam check valve
CN107148525A (en) * 2014-11-07 2017-09-08 戴科知识产权控股有限责任公司 Check-valves with improved containment member
CN208918622U (en) * 2018-10-08 2019-05-31 河北亚大汽车塑料制品有限公司 A kind of unidirectional Pcv valve of integrated form

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101575997A (en) * 2009-06-05 2009-11-11 上海万捷汽车控制***有限公司 Diaphragm type PCV valve of crankcase ventilation system
JP2011236854A (en) * 2010-05-12 2011-11-24 Honda Motor Co Ltd Device for reflux of blow-by gas
CN101881225A (en) * 2010-06-17 2010-11-10 重庆长安汽车股份有限公司 Check valve for engine
CN103195616A (en) * 2013-04-24 2013-07-10 河北亚大汽车塑料制品有限公司 Fuel steam check valve
CN107148525A (en) * 2014-11-07 2017-09-08 戴科知识产权控股有限责任公司 Check-valves with improved containment member
CN208918622U (en) * 2018-10-08 2019-05-31 河北亚大汽车塑料制品有限公司 A kind of unidirectional Pcv valve of integrated form

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