WO2016033895A1 - 一种分离式碳罐油箱盖 - Google Patents

一种分离式碳罐油箱盖 Download PDF

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Publication number
WO2016033895A1
WO2016033895A1 PCT/CN2014/093241 CN2014093241W WO2016033895A1 WO 2016033895 A1 WO2016033895 A1 WO 2016033895A1 CN 2014093241 W CN2014093241 W CN 2014093241W WO 2016033895 A1 WO2016033895 A1 WO 2016033895A1
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WIPO (PCT)
Prior art keywords
fuel tank
cover
carbon
tank cap
passage
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PCT/CN2014/093241
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English (en)
French (fr)
Inventor
张毅
Original Assignee
重庆峰瑞塑料制品有限公司
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Application filed by 重庆峰瑞塑料制品有限公司 filed Critical 重庆峰瑞塑料制品有限公司
Priority to US14/422,064 priority Critical patent/US9492779B2/en
Publication of WO2016033895A1 publication Critical patent/WO2016033895A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0423—Beds in columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/04—Tank inlets
    • B60K15/0406—Filler caps for fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/04—Tank inlets
    • B60K15/05—Inlet covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
    • B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C11/00—Use of gas-solvents or gas-sorbents in vessels
    • F17C11/007—Use of gas-solvents or gas-sorbents in vessels for hydrocarbon gases, such as methane or natural gas, propane, butane or mixtures thereof [LPG]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702—Hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4516—Gas separation or purification devices adapted for specific applications for fuel vapour recovery systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
    • B60K2015/03514—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems with vapor recovery means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K2015/03542—Mounting of the venting means
    • B60K2015/03547—Mounting of the venting means the venting means are integrated in the fuel cap or inlet cover

Definitions

  • the present invention relates to a split canister fuel tank cap.
  • the technical problem to be solved by the present invention is to provide a separate carbon canister fuel tank cap to solve the deficiencies of the prior art.
  • a split type canister fuel tank cover which comprises a fuel tank cover, a carbon cover and a fuel tank outer cover; a middle portion of the carbon cover is provided with a filling cavity with an upper end opening, and the fuel tank outer cover is disposed on the carbon Above the cover, the fuel tank cover wraps the upper port of the filling chamber; the fuel tank cap is disposed under the carbon cover, the fuel tank cap is provided with a card slot for connecting with the fuel tank port; between the fuel tank and the carbon cover and the fuel tank cover Removably connected, or the detachable connection between the oil tank and the carbon cover, or the detachable connection between the oil tank and the fuel tank outer cover; the middle of the fuel tank cover is provided with a through hole penetrating the upper and lower end faces of the fuel tank cap,
  • the carbon cover is provided with a first passage, and the first passage connects the through hole with the filling chamber; the filling chamber is provided with an oil absorbing filler.
  • the object of the present invention is to design a carbon can portion (the portion composed of the carbon cover and the fuel tank cover) as a standard product for the above-mentioned deficiencies of the prior art, and to adapt to different fuel tanks by changing the size of the cover connected to the fuel tank cap and the fuel tank.
  • the connection between the canister and the fuel tank cap is designed as a standard interface, so that Even for different fuel tanks, just replace the different fuel tank caps.
  • the design and processing of the fuel tank caps is relatively simple, and the various interfaces are standard. In this case, whether it is development or manufacturing, the whole process is implemented. It's much easier and the cost is much lower.
  • Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is a schematic view of the oil flow direction of the present invention.
  • Figure 3 is a schematic view showing the structure of the present invention filled with an oil absorbing filler.
  • a split type canister fuel tank cap includes a carbon canister and a fuel tank cap 3
  • the carbon canister includes a fuel tank outer cover 1 and a carbon cover 2
  • the middle portion of the carbon cover 2 has an upper end.
  • the filling chamber 4 of the opening, the tank cover 1 is disposed above the carbon cover 2, and the tank cover 1 encloses the upper port of the filling chamber 4, and the connection between the tank cover 1 and the carbon cover 2 is unsealed,
  • the sealed connection can facilitate the discharge of the filtered oil and gas to the outside; the inner wall of the fuel tank outer cover 1 and the outer side of the carbon cover 2 can be snap-fitted.
  • the fuel tank cap 3 is disposed below the carbon cover 2, and the fuel tank cap 3 is provided with a card slot 5 for connecting to the tank port.
  • the card slot 5 is provided with an O-ring.
  • the fuel tank cap 3 is detachably connected with the carbon cover 2 and the fuel tank outer cover 1, or the detachable connection between the fuel tank cap 3 and the carbon cover 2, or the detachable between the fuel tank cap 3 and the fuel tank outer cover 1
  • the middle of the fuel tank cap 3 is provided with a through hole 6 extending through the upper and lower end faces of the fuel tank cap 3.
  • the carbon cover 2 is provided with a first passage 7 which communicates the through hole 6 with the filling chamber 4, A channel 7 is used to introduce the volatilized oil and gas in the fuel tank into the filling chamber 4.
  • the oil and gas is filtered by the oil absorption packing 8 in the filling chamber 4 and discharged to the outside to achieve the purpose of controlling fuel discharge and reducing pollution.
  • An oil absorbing filler 8 is provided in the filling chamber 4.
  • the present invention further includes a vent tube 9 disposed in the carbon cover 2; the vent tube 9 is sleeved on the outlet of the first passage 7, and the lower end of the vent tube 9 is provided with a first breathing plate 10; the first breathing plate 10, The bottom of the carbon cover 2 and the inner wall of the carbon cover 2 form a volume chamber 11; a second passage 12 is provided between the inner wall of the vent tube 9 and the inner wall of the filling chamber 4, and the second passage 12 connects the outlet of the first passage 7 with the volume chamber 11 connected.
  • the role of the second passage 12 first, changing the flow direction of the oil and gas in the first passage 7 to reduce the flow rate; second, increasing the filtration time of the oil and gas in the carbon cover 2, which is beneficial to the sufficient absorption of harmful substances in the oil and gas; Third, the introduction of oil and gas into the volume chamber 11 facilitates the storage of a small amount of oil in the volume chamber 11.
  • the oil absorbing filler 8 is disposed above the first breathing plate 10, and the oil absorbing filler 8 is in the filling chamber 4.
  • the bottom plate of the carbon cover 2 is provided with a strut 13 penetrating the bottom plate; the upper end of the strut 13 is placed in the filling chamber 4 through the volume chamber 11, and the volume chamber 11 surrounds the lower end of the strut 13; the lower end of the vent tube 9 is placed in the volume chamber 11
  • the first passage 7 penetrates the strut 13; the vent pipe 9 is sleeved on the strut 13, and the inner wall of the vent pipe 9 and the outer wall of the strut 13 form the second passage 12.
  • the inner wall of the vent pipe 9 is not required to be sealingly connected with the outer wall of the strut 13 because the vent pipe 9 completely covers the strut 13, and the air outlet of the lower end of the vent pipe 9 is completely placed in the volume chamber 11, and the oil and gas in the first passage 7 It will flow into the volume chamber 11.
  • the lower end of the strut 13 is placed in the fuel tank cap 3, and the lower end of the strut 13 is detachably connected to the fuel tank cap 3.
  • a seal ring is provided at a joint of the lower end of the strut 13 and the fuel tank cap 3.
  • the lower end of the first breathing plate 10 is provided with a support member 14 which is disposed above the lower port of the second passage 12 so that the air outlet of the lower end of the vent pipe 9 is in the volume chamber 11.
  • the upper end surface of the support member 14 is provided with a plurality of vent holes, which facilitates the passage of the oil and gas in the volume chamber 11 into the filling chamber 4 through the first breathing plate 10; the support member 14 is fixedly coupled to the outer wall of the vent tube 9.
  • the support member 14 may have a ring shape, and further may have a cylinder extending into the volume chamber 11 at the periphery of the ring; the height of the cylinder and the depth of the volume chamber 11 are equal, so as to support the support;
  • the upper end surface of the 14 (that is, the upper end surface of the ring) is flush with the bottom surface of the filling chamber 4, which It is advantageous to place the first breathing plate 10 (preferably: the first breathing plate 10 covers the upper surface of the filling chamber 4 while covering the upper port of the volume chamber 11).
  • the support member 14 is integrally formed with the vent pipe 9.
  • this embodiment further includes a second breathing plate 15 for covering the oil absorbing filler 8, and the second breathing plate 15 is disposed on the upper port of the filling chamber 4.
  • the second breathing plate 15 serves to prevent the oil-absorbing filler 8 from leaking out.
  • the circumference of the port on the filling chamber 4 is provided with a ring table for facilitating insertion into the second breathing plate 15, and the lower end surface of the oil tank outer cover 1 is provided with a protrusion for pressing the second breathing plate 15, and the vent pipe 9 is provided with support.
  • the step of the second breathing plate 15; the upper end of the vent pipe 9 may pass through the second breathing plate 15 to the lower side of the tank cover 1, or may not pass through the second breathing plate 15, which is preferably vented through the second embodiment.
  • the breathing plate 15 is below the tank cover 1, and the upper end surface of the vent pipe 9 is in contact with the lower end surface of the tank cover 1, and the vent pipe 9 can support not only the second breathing plate 15, but also the tank cover 1.
  • a spacer 16 may be disposed above the second breathing plate 15 , and the spacer 16 is disposed between the oil tank outer cover 1 and the second breathing plate 15 to facilitate pressing the second breathing plate 15 to better prevent the oil absorption filler 8 from leaking out. .
  • the breathing sponge 17 is provided in the column 13 and the breathing sponge 17 is on the second channel 12. This is more conducive to slowing the oil and gas flow rate. It is also possible to provide a partition on the second passage 12, and the breathing sponge 17 may be provided at the upper or lower end of the partition, and the partition is not provided on the second passage 12 in this example.
  • the oil absorbing filler 8 is activated carbon.
  • the fuel tank cap 3 is correctly placed on the fuel tank during use, and then the carbon canister (carbon cover 2 of the carbon canister) is quickly connected to the fuel tank cap 3.
  • the carbon canister is a standard part. A small amount of oil in the fuel tank passes through the fuel tank cap 3 and is first buffered by the breathing sponge 17. Then the venting pipe 9 returns the oil and gas into the carbon cap 2, and finally enters the activated carbon, and the gas filtered by the activated carbon passes through the second.
  • the breathing plate 15 is discharged into the atmosphere.
  • the canister and the fuel tank cap 3 are independent of each other and have high versatility, and can be applied to different fuel tank caps 3. The structure design is simplified, the manufacturing process is simplified, and the cost is reduced.
  • vent pipe 9 Since the vent pipe 9 has the function of turning the oil and gas back, a small amount of oil entering the volume chamber 11 will be returned to the oil tank along the oil/gas flow direction under the negative pressure of the oil tank, thereby avoiding the long-term immersion of the oil on the carbon powder, so that the carbon powder The adsorption is better.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)

Abstract

一种分离式碳罐油箱盖，包括油箱盖（3）、碳盖（2）、油箱外盖（1）；碳盖（2）设有填充腔（4），油箱外盖（1）包裹住填充腔（4）的上端口；油箱盖（3）设置在碳盖（2）的下方，油箱盖（3）上设有卡槽（5）；油箱盖（3）与碳盖（2）和\或油箱外盖（1）之间通过可拆卸方式连接；油箱盖（3）的中部设有贯穿油箱盖（3）上、下端面的通孔（6），碳盖（2）上设有第一通道（7），第一通道（7）将通孔（6）与填充腔（4）相连通；填充腔（4）内设有吸油填料（8）。该分离式碳罐油箱盖将碳灌部分设计成一个标准产品，通过油箱盖与油箱连接的盖子尺寸的变化来适应不同的油箱，从而无论开发还是加工制造，都简化了环节，降低了成本。

Description

一种分离式碳罐油箱盖 技术领域
本发明涉及一种分离式碳罐油箱盖。
背景技术
现在市场上的油箱盖，绝大多数通用性比较差，不同的油箱就会有不同的碳罐油箱盖，种类增多，成本增加。
发明内容
本发明所要解决的技术问题是提供一种分离式碳罐油箱盖,解决现有技术的不足。
本发明解决上述技术问题的技术方案如下：一种分离式碳罐油箱盖，其包括油箱盖、碳盖、油箱外盖；碳盖的中部设有上端开口的填充腔，油箱外盖设置在碳盖的上方，且油箱外盖包裹住填充腔的上端口；油箱盖设置在碳盖的下方，油箱盖上设有用于与油箱口相连接的卡槽；油箱与碳盖和油箱外盖之间通过可拆卸方式连接、或油箱与碳盖之间通过可拆卸方式连接、或油箱与油箱外盖之间通过可拆卸方式连接；油箱盖的中部设有贯穿油箱盖上、下端面的通孔，碳盖上设有第一通道，第一通道将通孔与填充腔相连通；填充腔内设有吸油填料。
本发明的有益效果是：
本发明的目的在于针对以上现有技术的不足，将碳罐部分(碳盖和油箱外盖组成的部分)设计成一个标准产品，通过油箱盖与油箱连接的盖子尺寸的变化来适应不同的油箱，同时碳罐与油箱盖的连接设计成标准接口，这样， 即使是不同的油箱，只要更换不同的油箱盖即可，油箱盖的设计、加工相对来说简单得多，各种接口又是标准的，这样的话，无论是开发，还是加工制造，整个环节实施容易得多，成本也会低很多。
附图说明
图1为本发明的结构示意图；
图2为本发明的油气流向的示意图；
图3为本发明的填有吸油填料的结构示意图。
具体实施方式
以下结合附图对本发明的原理和特征进行描述，所举实例只用于解释本发明，并非用于限定本发明的范围。
如图1、图2、图3所示，一种分离式碳罐油箱盖，其包括碳罐、油箱盖3，碳罐包括油箱外盖1、碳盖2；碳盖2的中部设有上端开口的填充腔4，油箱外盖1设置在碳盖2的上方，且油箱外盖1包裹住填充腔4的上端口，油箱外盖1与碳盖2之间连接处采用非密封连接，非密封连接可以方便过滤后的油气排放到外界；油箱外盖1的内壁与碳盖2的外侧可以采用卡合连接。油箱盖3设置在碳盖2的下方，油箱盖3上设有用于与油箱口相连接的卡槽5，优选这卡槽5内设有O型密封圈。油箱盖3与碳盖2和油箱外盖1之间通过可拆卸方式连接、或油箱盖3与碳盖2之间通过可拆卸方式连接、或油箱盖3与油箱外盖1之间通过可拆卸方式连接；油箱盖3的中部设有贯穿油箱盖3上、下端面的通孔6，碳盖2上设有第一通道7，第一通道7将通孔6与填充腔4相连通，第一通道7用于将油箱中的挥发的油气导入到填充腔4中，油气经过填充腔4内吸油填料8过滤后排放到外界，以达到控制燃油排放、减少污染的目的。填充腔4内设有吸油填料8。
本发明还包括通气管9，通气管9设置在碳盖2内；通气管9套在第一通道7的出口上，通气管9的下端设有第一呼吸板10；第一呼吸板10、碳盖2的底部、碳盖2的内壁形成容积腔11；通气管9的内壁与填充腔4的内壁之间设有第二通道12，第二通道12将第一通道7的出口与容积腔11相连通。第二通道12的作用：第一、改变第一通道7内油气的流通方向，使得流速减小；第二、增加了油气在碳盖2中的过滤时间，有利于油气中有害物质充分吸收；第三、将油气导入到容积腔11中，有利于容积腔11存储的少量油。吸油填料8设置在第一呼吸板10的上方，且吸油填料8至于填充腔4中。
碳盖2的底板设有贯穿底板的支柱13；支柱13的上端穿过容积腔11置于填充腔4中，且容积腔11环绕着支柱13的下端；通气管9的下端置于容积腔11中；第一通道7贯通支柱13；通气管9套在支柱13上，通气管9的内壁与支柱13的外壁形成第二通道12。本实施例不需要通气管9的内壁与支柱13的外壁密封连接，因为通气管9完全套住支柱13，通气管9下端的出气口完全置于容积腔11中，第一通道7中的油气都会流进容积腔11中。
支柱13的下端置于油箱盖3中，支柱13的下端与油箱盖3之间通过可拆卸方式相连接。支柱13的下端与油箱盖3的连接处设有密封圈。
优选：第一呼吸板10的下端设有支撑件14，支撑件14设置在第二通道12下端口的上方，这样才能使得通气管9下端的出气口在容积腔11中。支撑件14的上端面上设有多个通气孔，这样有利于容积腔11中的油气通过第一呼吸板10进入填充腔4内；支撑件14与通气管9的外壁固定连接。支撑件14的结构可以为圆环，进一步还可以圆环的周边设置向容积腔11内伸入的圆筒；圆筒的高度和容积腔11的深度相等，这样起到支撑的作用；支撑件14的上端面(也就是圆环的上端面)与填充腔4的底面相齐平，这 样有利于放置第一呼吸板10(优选：第一呼吸板10在盖住容积腔11的上端口的同时也盖住填充腔4的底面)。更优：支撑件14与通气管9一体成型。
优选：本实施例还包括用于盖住吸油填料8的第二呼吸板15，第二呼吸板15设置在填充腔4的上端口上。第二呼吸板15用于防止吸油填料8漏出。更优选：填充腔4上端口的圆周设有方便嵌入第二呼吸板15的环台，油箱外盖1的下端面设有下压第二呼吸板15的凸起，通气管9上设有支撑第二呼吸板15的台阶；通气管9的上端可以穿过第二呼吸板15至油箱外盖1的下方，也可以不用穿过第二呼吸板15，本实例优选通气管9穿过第二呼吸板15至油箱外盖1的下方，且通气管9的上端面与油箱外盖1的下端面相接触，通气管9不但可以支撑第二呼吸板15，还可以支撑油箱外盖1。第二呼吸板15的上方可以设有隔片16，隔片16设置于油箱外盖1与第二呼吸板15之间，方便平压第二呼吸板15，起到更好防止吸油填料8漏出。
优选：支柱13内设有呼吸海绵17，且呼吸海绵17在第二通道12上。这样更有利于减缓油气流速。还可以在第二通道12上设置隔板，呼吸海绵17可以在设置在隔板的上端或下端，本实例没有在第二通道12上设置隔板。
优选：吸油填料8为活性炭。
使用过程中先将油箱盖3正确装在油箱上，然后碳罐(碳罐的碳盖2)与油箱盖3快捷连接在一起。碳罐是一个标准件，油箱的少量油气经过油箱盖3后首先经过呼吸海绵17缓冲，然后通气管9让油气折返进入碳盖2，最后进入活性炭里，经过活性炭过滤后的气体再经过第二呼吸板15排放到大气中。碳罐和油箱盖3相互独立，通用性强，可以适用不同的油箱盖3。结构设计简易化，制造加工简单化，成本降低。由于通气管9具有使油气折返功能，进入容积腔11的少量油将会在油箱负压作用下，沿着油/气流动方向回流到油箱里，避免油对碳粉的长期浸泡，让碳粉的吸附性发挥更佳。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明 的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种分离式碳罐油箱盖，其特征在于：包括油箱盖、碳盖、油箱外盖；所述碳盖的中部设有上端开口的填充腔，所述油箱外盖设置在所述碳盖的上方，且所述油箱外盖包裹住所述填充腔的上端口；所述油箱盖设置在所述碳盖的下方，所述油箱盖上设有用于与油箱口相连接的卡槽；所述油箱盖与所述碳盖和油箱外盖之间通过可拆卸方式连接、或所述油箱盖与所述碳盖之间通过可拆卸方式连接、或所述油箱盖与所述油箱外盖之间通过可拆卸方式连接；所述油箱盖的中部设有贯穿所述油箱盖上、下端面的通孔，所述碳盖上设有第一通道，所述第一通道将所述通孔与所述填充腔相连通；所述填充腔内设有吸油填料。
  2. 根据权利要求1所述一种分离式碳罐油箱盖，其特征在于：还包括通气管，所述通气管设置在所述碳盖内；所述通气管套在所述第一通道的出口上，所述通气管的下端设有第一呼吸板；所述第一呼吸板、所述碳盖的底部、所述碳盖的内壁形成容积腔；所述通气管的内壁与所述填充腔的内壁之间设有第二通道，所述第二通道将所述第一通道的出口与所述容积腔相连通；所述吸油填料设置于所述第一呼吸板的上方。
  3. 根据权利要求2所述一种分离式碳罐油箱盖，其特征在于：所述碳盖的底板设有贯穿所述底板的支柱；所述支柱的上端穿过所述容积腔置于所述填充腔中，且所述容积腔环绕着所述支柱的下端；所述通气管的下端置于所述容积腔中；所述第一通道贯通所述支柱；所述通气管套在所述支柱上，所述通气管的内壁与所述支柱的外壁形成 所述第二通道。
  4. 根据权利要求3所述一种分离式碳罐油箱盖，其特征在于：所述支柱的下端置于所述油箱盖中，所述支柱的下端与所述油箱盖之间通过可拆卸方式相连接。
  5. 根据权利要求1至4任一项所述一种分离式碳罐油箱盖，其特征在于：所述吸油填料为活性炭。
  6. 根据权利要求2至4任一项所述一种分离式碳罐油箱盖，其特征在于:还包括用于盖住所述吸油填料的第二呼吸板，所述第二呼吸板设有在所述填充腔的上端口上。
  7. 根据权利要求6所述一种分离式碳罐油箱盖，其特征在于：所述填充腔上端口的圆周设有方便嵌入所述第二呼吸板的环台，所述油箱外盖的下端面设有下压所述第二呼吸板的凸起，所述通气管上设有支撑所述第二呼吸板的台阶。
  8. 根据权利要求2至4任一项所述一种分离式碳罐油箱盖，其特征在于:所述第一呼吸板的下端设有支撑板，所述支撑板设有多个通气孔；所述支撑板与所述通气管的外壁固定连接。
  9. 根据权利要求8所述一种分离式碳罐油箱盖，其特征在于:所述支撑板与所述通气管一体成型。
  10. 根据权利要求3至4任一项所述一种分离式碳罐油箱盖，其特征在于：所述支柱内设有呼吸海绵，且所述呼吸海绵在所述第二通道上。
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