WO2022110533A1 - 一种阀体的密封结构、阀及cflvv阀 - Google Patents

一种阀体的密封结构、阀及cflvv阀 Download PDF

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Publication number
WO2022110533A1
WO2022110533A1 PCT/CN2021/073574 CN2021073574W WO2022110533A1 WO 2022110533 A1 WO2022110533 A1 WO 2022110533A1 CN 2021073574 W CN2021073574 W CN 2021073574W WO 2022110533 A1 WO2022110533 A1 WO 2022110533A1
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WO
WIPO (PCT)
Prior art keywords
discharge port
sealing
valve body
small
ring
Prior art date
Application number
PCT/CN2021/073574
Other languages
English (en)
French (fr)
Inventor
朱晓通
Original Assignee
皑壹智能汽车科技(嘉兴)有限公司
上海盈智汽车零部件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202022784534.1U external-priority patent/CN215371031U/zh
Priority claimed from CN202011346623.6A external-priority patent/CN112344037A/zh
Application filed by 皑壹智能汽车科技(嘉兴)有限公司, 上海盈智汽车零部件有限公司 filed Critical 皑壹智能汽车科技(嘉兴)有限公司
Priority to US18/038,909 priority Critical patent/US20240019030A1/en
Priority to EP21896053.2A priority patent/EP4253807A1/en
Publication of WO2022110533A1 publication Critical patent/WO2022110533A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0071—Electrically conditioning the air, e.g. by ionizing
    • B60H3/0078—Electrically conditioning the air, e.g. by ionizing comprising electric purifying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0071—Electrically conditioning the air, e.g. by ionizing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
    • F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • F16K31/22—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with the float rigidly connected to the valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H2003/0675—Photocatalytic filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H2003/0683—Filtering the quality of the filter or the air being checked

Definitions

  • the invention belongs to the technical field of valves, and in particular relates to a sealing structure of a valve body, a valve and a CFLVV valve.
  • the fuel tanks on the market generally have these two requirements: 1. Refueling limit (excessive filling is prohibited); 2. In some specific cases, the fuel tank can be vented normally: when there is positive pressure in the fuel tank, it can be timely When the pressure is released or when there is negative pressure in the fuel tank, air can be supplied to the fuel tank in time.
  • a fuel tank needs to be equipped with a fuel limit valve and at least one flip valve.
  • One fuel tank valve can meet the two functional requirements mentioned above at the same time, and the functions of the two valves are integrated into one product, so that the number of valves that need to be configured in the fuel tank can be reduced. It is also easier to arrange on the fuel tank.
  • a combination valve that is, a combination of the fuel limit valve and the flip valve, so that one product has the functions of both.
  • the combination valve is relatively large as a whole, one side is the valve core of the refueling limit valve, and the other side is the valve core of the flip valve.
  • the two do not interfere with each other, but due to the two valve cores It is separated, which leads to the need to set up the sealing parts matched with the valve core; the other is: the size of the combined valve is similar to that of an ordinary fuel limit valve, which is to stack the valve core of the fuel limit valve and the valve core of the flip valve.
  • the small float is stacked on the large float.
  • the small float corresponds to the function of the filling limit valve
  • the large float corresponds to the function of the flip valve.
  • the two superimposed forms also require two different sealing components for sealing.
  • the technical problem to be solved by the present invention is to provide a valve body sealing structure, a valve and a CFLVV valve, so as to solve the problem that the sealing components of the existing combined valve need to be separately arranged for two valve cores.
  • the sealing structure of the valve body of the present invention is arranged in the valve body, and the top surface of the inner cavity of the valve body is provided with a small discharge port and a large discharge port arranged around the small discharge port.
  • the large exhaust port corresponds to the second exhaust channel
  • the small valve core corresponds to the small exhaust port
  • the large valve core corresponds to the large exhaust port, including:
  • the sealing part is arranged in the cavity of the valve body and is located between the large valve core and the top surface of the valve body cavity, and is used to cooperate with the large valve core to seal the large discharge port and close the second row an air channel, forming a first communication channel connecting the inner cavity of the valve body and the small discharge port, and the bottom end of the first communication channel corresponds to the small valve core;
  • the large valve core slides to the closed position and cooperates with the sealing part to seal the large discharge port, and closes the second exhaust passage to form the first communication passage;
  • the small valve core slides to the closed position and cooperates with the bottom end of the first communication passage to seal the small discharge port and close the first exhaust passage.
  • the sealing part includes a carrier and a sealing assembly
  • the bearing member is movably arranged in the cavity of the valve body or fixedly connected to the large valve core; and the bearing member is provided with a through hole matching the small discharge port;
  • the sealing component is arranged on the carrier and/or on the top surface of the cavity of the valve body, and is used to cooperate with the carrier to seal the large discharge port, and cooperate with the small discharge port and the through hole
  • the first communication channel is formed.
  • the sealing assembly includes a large sealing ring, a middle sealing ring and a small sealing ring;
  • the large seal ring and the middle seal ring are both arranged on the upper surface of the carrier and correspond to the large discharge port; the large seal ring is sleeved on the large discharge port; the middle seal a ring is located between the large discharge opening and the small discharge opening;
  • the small sealing ring is arranged at the through hole, and is used to cooperate to form the first communication channel.
  • the sealing assembly includes a large sealing ring, a middle extension ring and a small sealing ring;
  • the large sealing ring is arranged on the upper surface of the carrier, corresponds to the large outlet, and is sleeved on the large outlet;
  • the middle extension ring is arranged on the top surface of the valve body cavity , and corresponding to the large discharge port, located between the large discharge port and the small discharge port;
  • the small sealing ring is arranged at the through hole, and is used to cooperate to form the first communication channel.
  • the sealing assembly includes a large extension ring, a middle sealing ring and a small sealing ring;
  • the large extension ring is arranged on the top surface of the cavity of the valve body, corresponds to the large outlet, and is sleeved on the large outlet;
  • the middle sealing ring is arranged on the upper surface of the carrier , and corresponding to the large discharge port, located between the large discharge port and the small discharge port;
  • the small sealing ring is arranged at the through hole, and is used to cooperate to form the first communication channel.
  • the sealing assembly includes a large extension ring, a middle extension ring and a small sealing ring;
  • the large extension ring is arranged on the top surface of the cavity of the valve body, corresponds to the large discharge port, and is sleeved on the large discharge port;
  • the middle extension ring is arranged on the top surface of the valve body cavity on, and corresponding to the large discharge port, located between the large discharge port and the small discharge port;
  • the small sealing ring is arranged at the through hole, and is used to cooperate to form the first communication channel.
  • the sealing assembly includes a large extension ring and a small extension ring;
  • the large extension ring is arranged on the top surface of the cavity of the valve body, corresponds to the large discharge port, and is sleeved on the large discharge port;
  • the small extension ring is arranged on the top surface of the cavity of the valve body and corresponds to the large discharge port; the upper end of the small extension ring is located between the large discharge port and the small discharge port, and the diameter of the lower end is located between the large discharge port and the small discharge port. smaller than the diameter of the through hole;
  • the large extension ring, the outer side wall of the small extension ring, and the carrier are used to seal the large outlet; the small extension ring is used to cooperate with the small outlet to form the first communication aisle.
  • the sealing assembly includes the sealing assembly including a large extension ring, a middle extension ring and a small extension ring;
  • the large extension ring is arranged on the top surface of the cavity of the valve body, corresponds to the large discharge port, and is sleeved on the large discharge port;
  • the middle extension ring is arranged on the top surface of the valve body cavity on, and corresponding to the large discharge port, located between the large discharge port and the small discharge port;
  • the small extension ring is arranged on the top surface of the cavity of the valve body, and is used to form the first communication channel in cooperation with the small discharge port.
  • the sealing component and the carrier are integrally formed; when the sealing component is provided on the top surface of the cavity of the valve body, the sealing component is The sealing assembly is integrally formed with the valve body.
  • the bearing member includes a bearing unit and a sliding unit; the sliding unit is slidably connected to the cavity of the valve body; and the bearing unit is mounted on the sliding unit.
  • the large exhaust port is a plurality of large exhaust holes arranged around the small exhaust port;
  • the sealing portion includes a sealing assembly, and the sealing assembly includes a plurality of first sealing members and a second sealing member
  • the first seals are respectively arranged in the corresponding large exhaust holes, and are used to form a second communication channel connecting the inner cavity of the valve body and the large exhaust holes;
  • the second seal is provided at the small discharge port for forming the first communication channel.
  • the sealing part includes a sealing assembly, and the sealing assembly includes a large sealing ring, a middle sealing ring and a small sealing ring;
  • the large sealing ring and the middle sealing ring are both arranged on the top surface of the cavity of the valve body and correspond to the large discharge port; the large sealing ring is sleeved on the large discharge port; the middle seal the ring is located between the large discharge port and the small discharge port;
  • the small sealing ring is arranged on the top surface of the cavity of the valve body to form the first communication channel.
  • the sealing part includes a bearing member and a sealing assembly; the bearing member is provided on the top surface of the large valve core; and the bearing member is provided with the small discharge port matching through holes;
  • the sealing assembly includes a large sealing ring, a middle sealing ring and a small sealing ring; the large sealing ring and the middle sealing ring are both arranged on the upper surface of the carrier and correspond to the large discharge port;
  • the large seal ring is sleeved on the large discharge port;
  • the middle seal ring is located between the large discharge port and the small discharge port;
  • the small seal ring is set at the through hole for cooperating to form the first communication channel.
  • the sealing structure of the valve body of the present invention further comprises a pressure keeping part, which is arranged on the valve body; the pressure keeping part comprises a pressure keeping shell and a pressure keeping cover;
  • the pressure-holding shell is also provided with an inflow channel and an outflow channel that communicate with the accommodating cavity; the pressure-holding shell is arranged on the top surface of the valve body, and the inflow channel is communicated with the small discharge port ;
  • the pressure-holding cover is slidably connected to the accommodating cavity for opening and closing the inflow channel.
  • the pressure maintaining part further comprises a lift pipe, the lift pipe is arranged between the pressure maintaining shell and the valve body, and the two ends are respectively connected to the small discharge port It communicates with the inflow channel of the pressure-holding shell; the pressure-holding shell cooperates with the valve body through the lift pipe to form a large exhaust channel, and the large exhaust channel is communicated with the large exhaust port.
  • the pressure maintaining portion further includes an elastic member, the elastic member is arranged in the accommodating cavity, and the two ends are respectively connected with the inner wall surface of the accommodating cavity and the pressure maintaining cover. connected to provide a pressing force for the pressure-holding cover to close the inflow channel.
  • a valve of the present invention includes the sealing structure of the valve body described in any one of the above.
  • a CFLVV valve of the present invention includes the sealing structure of the valve body according to any one of the above.
  • the present invention has the following advantages and positive effects due to the adoption of the above technical solutions:
  • a sealing part is arranged in the valve body cavity between the large valve core and the top surface of the valve body cavity; the valve body is provided with a large discharge port and a small discharge port, and is provided with a small discharge port.
  • a pressure keeping part is further arranged at the small discharge port, and after the large discharge port is closed by the sealing part, the sealing of the cavity of the valve body is realized, and the pressure keeping part is set.
  • a certain pressure is limited to the small discharge port.
  • FIG. 1 is a schematic diagram of an embodiment of the sealing structure of the present invention.
  • FIG. 2 is a schematic diagram of another embodiment of the sealing structure of the present invention.
  • FIG. 3 is a schematic diagram of another embodiment of the sealing structure of the present invention.
  • FIG. 4 is a schematic diagram of a second exhaust passage of the sealing structure of the present invention.
  • FIG. 5 is a schematic diagram of a first exhaust passage of the sealing structure of the present invention.
  • FIG. 6 is a schematic view of the sealing portion of the sealing structure of the present invention being provided on the large valve core;
  • Fig. 7 is the schematic diagram of the complete closure of the sealing structure of the present invention.
  • FIG. 8 is a schematic diagram of a pressure-holding portion of the sealing structure of the present invention.
  • FIG. 9 is another schematic diagram of the pressure maintaining portion of the sealing structure of the present invention.
  • valve body valve body
  • 2 large discharge port
  • 3 small discharge port
  • 4 carrier
  • 401 sealing unit
  • 402 sliding unit
  • 5 large valve core
  • 6 small valve core
  • 7 Large sealing ring
  • 8 Middle sealing ring
  • 9 Small sealing ring
  • 10 Middle extension ring
  • 11 Small extension ring
  • 16 elastic member
  • 17 flow passage.
  • the combination valve referred to in this embodiment is a combination valve that can simultaneously realize the functions of a fuel-limiting valve and a flip valve, and is applied and installed in the fuel tank.
  • a sealing structure of the present embodiment is arranged in the valve body 1 of the combined valve with double valve cores to seal the small discharge port 3 on the top surface of the inner cavity of the valve body 1 and the large discharge port 3 surrounding the small discharge port 3
  • the discharge port 2 has a first exhaust passage corresponding to the small discharge port 3 and a second exhaust passage corresponding to the large discharge port 2 in the valve body.
  • the double valve cores are respectively the small valve cores 6 corresponding to the small discharge port 3 And the large valve core 5 corresponding to the large discharge port 2.
  • the sealing structure specifically includes a sealing portion.
  • the sealing part is arranged in the inner cavity of the valve body 1 and is located between the large valve core 5 and the top surface of the inner cavity of the valve body 1 , and is used to cooperate with the large valve core 5 to seal the large discharge port 2 and form a communication with the inside of the valve body 1 .
  • the cavity is the first communication channel of the small discharge port 3 , and the bottom end of the first communication channel corresponds to the small valve core 6 .
  • the combination valve needs to realize two situations for different scenarios.
  • the first case is that the large discharge port 2 is closed but the small discharge port 3 is opened
  • the second case is that both the large discharge port 2 and the small discharge port 3 are closed.
  • the large valve core 5 moves up to the top of the inner cavity of the valve body 1, and cooperates with the sealing part to seal the large discharge port 2, close the second exhaust passage and form the first communication passage.
  • the small valve core 6 moves up to the top of the inner cavity of the valve body 1, and the top surface of the small valve core 6 cooperates with the bottom end of the first communication channel to seal the opening at the bottom end of the first communication channel , the second exhaust passage is closed, so as to realize the closing of the small exhaust port 3 .
  • a sealing portion is provided in the valve body cavity between the large valve core 5 and the top surface of the inner cavity of the valve body 1; when the large discharge port 2 needs to be closed, the large The valve core 5 moves to the closed position, and cooperates with the sealing part to close the large discharge port 2, and forms a first communication channel that communicates with the small discharge port 3; Once the communication channel is sealed, the small discharge port 3 can be closed. Only one sealing part is needed to realize the opening and closing of the two valve cores to the two discharge ports respectively, which solves the problem that the sealing parts of the existing combined valve need to be separately arranged for the two valve cores.
  • the sealing portion may include a carrier 4 and a sealing assembly.
  • the carrier 4 is movably arranged in the inner cavity of the valve body 1 or fixedly connected to the large valve core 5 ; and the carrier 4 is provided with a through hole matching the small discharge port 3 .
  • the sealing component is arranged on the carrier 4 and/or on the top surface of the inner cavity of the valve body 1, and is used to cooperate with the carrier 4 to seal the large discharge port 2, and cooperate with the small discharge port 3 and the through hole to form a first communication channel.
  • the sealing assembly when the sealing assembly is disposed on the carrier 4 , the sealing assembly and the carrier 4 are integrally formed. When the sealing assembly is disposed on the top surface of the inner cavity of the valve body 1 , the sealing assembly and the valve body 1 are integrally formed.
  • the sealing assembly when the sealing assembly is partially provided on the carrier 4 and partially provided on the valve body 1 , it can be integrally formed with the carrier 4 and the valve body 1 respectively.
  • the carrier 4 may specifically include a sealing unit 401 and a sliding unit 402 .
  • the sliding unit 402 can be slidably connected to the inner cavity of the valve body 1 by means of sliding rails and sliding grooves.
  • the sealing unit 401 is mounted on the sliding unit 402, and is used to cooperate with the sealing assembly to realize the opening and closing of the two discharge ports.
  • the sealing portion may also be a sealing assembly, and the sealing assembly specifically includes a plurality of first sealing members and second sealing members; the first sealing members are respectively disposed on the corresponding large exhaust holes 2 for forming A second communication channel connecting the inner cavity of the valve body 1 and the large exhaust hole 2; the second seal is provided on the corresponding small exhaust port 3 to form the first communication channel.
  • the large valve core 2 moves up to the top of the inner cavity of the valve body 1, and the top surface of the large valve core 5 cooperates with the bottom end of the second communication channel to realize the opening of the bottom end of the second communication channel. seal, thereby achieving the closure of the large discharge port 2.
  • the small valve core 6 moves up to the top of the inner cavity of the valve body 1, and the top surface of the small valve core 6 cooperates with the bottom end of the first communication channel to realize the opening of the bottom end of the first communication channel. Seal, thereby achieving the closure of the small discharge port 3.
  • the sealing portion can also be another sealing component, and the sealing component includes a large sealing ring 7 , a middle sealing ring 8 and a small sealing ring 9 .
  • the large sealing ring 7 , the middle sealing ring 8 and the small sealing ring 9 are all arranged on the top surface of the inner cavity of the valve body 1 and correspond to the large discharge port 2 .
  • the large seal ring 7 is sleeved on the large discharge port 2, the middle seal ring 8 is located between the large discharge port 2 and the small discharge port 3, and the small seal ring 9 is also set between the large discharge port 2 and the small discharge port 3. to form a first communication channel.
  • the large valve core 2 moves up to the top of the inner cavity of the valve body 1, and the top surface of the large valve core 5 cooperates with the bottom ends of the large sealing ring 7 and the middle sealing ring 8 to realize the large discharge Exit 2 is closed.
  • the small valve core 6 moves up to the top of the inner cavity of the valve body 1, and the top surface of the small valve core 6 cooperates with the bottom end of the first communication channel to realize the bottom end opening of the first communication channel Sealing, so as to achieve the closure of the small discharge port 3.
  • the sealing portion may also be a carrier and a sealing assembly directly disposed on the large valve core.
  • the carrier is arranged on the top surface of the large valve core, and the carrier is provided with a through hole matching with the small discharge port.
  • the sealing assembly may include a large sealing ring 7 , a middle sealing ring 8 and a small sealing ring 9 .
  • the large sealing ring 7 and the middle sealing ring 8 are both arranged on the upper surface of the carrier, and correspond to the large outlet 2; the large sealing ring 7 is sleeved on the large outlet 2; the middle sealing ring 8 is located between the large outlet 2 and the small outlet 2.
  • a small sealing ring 9 is provided at the through hole to form a first communication channel.
  • the large valve core 2 moves up to the top of the inner cavity of the valve body 1, and the upper ends of the large sealing ring 7 and the middle sealing ring 8 cooperate with the top surface of the cavity of the valve body to realize the large discharge port 2. closure.
  • the small valve core 6 moves up to the top of the inner cavity of the valve body 1, and the top surface of the small valve core 6 cooperates with the bottom end of the first communication channel to realize the bottom end opening of the first communication channel Sealing, so as to achieve the closure of the small discharge port 3.
  • the carrier may not be used, and the sealing assembly may be directly installed on the large valve core, which is not specifically limited here.
  • Embodiment 1 Referring to FIG. 1 , the sealing assembly specifically includes a large sealing ring 7 , a middle sealing ring 8 and a small sealing ring 9 .
  • a large sealing ring 7 and a middle sealing ring 8 are provided on the upper end surface of the carrier 4 .
  • the diameter of the large sealing ring 7 needs to be larger than the maximum diameter of the large discharge port 2
  • the diameter of the middle sealing ring 8 needs to be smaller than the minimum diameter of the large discharge port 2 and the maximum diameter of the small discharge port 3 .
  • the small discharge port 3 communicates with the inner cavity of the valve body 1 through the through hole of the bearing member 4 .
  • a small sealing ring 9 needs to be arranged on the lower end face of the sealing ring, and the diameter of the small sealing ring 9 needs to be larger than the diameter of the through hole.
  • the small sealing ring 9 can be in contact with the top surface of the small valve core 6 when the small valve core 6 rises and seal the small discharge port 3 .
  • Embodiment 2 Referring to FIG. 2 , this embodiment is a modification of Embodiment 1 above.
  • the arrangement of the large sealing ring 7 and the small sealing ring 9 remains unchanged, and the middle sealing ring 8 is removed.
  • a middle extension ring 10 is provided on the wall surface of the inner cavity top surface of the valve body 1 between the large discharge port 2 and the small discharge port 3 , and the lower end of the middle extension ring 10 is used for contacting the upper end surface of the bearing member 4 .
  • the large sealing ring 7 can be used to seal the large outlet 2
  • the through hole of the carrier 4 can be matched to communicate the small outlet 3 with the inner cavity of the valve body 1 .
  • the sealing method of the small sealing ring 9 is the same as that of the first embodiment, and will not be repeated.
  • Embodiment 3 This embodiment is also a modification of Embodiment 1 above.
  • the arrangement of the middle sealing ring 8 and the small sealing ring 9 remains unchanged, and the large sealing ring 7 is removed.
  • a large extension ring is provided on the wall surface of the inner cavity top surface of the valve body 1 located outside the large discharge port 2 , and the lower end of the large extension ring is used for contacting the upper end surface of the bearing member 4 .
  • the sealing ring 8 in the fit can seal the large outlet 2 .
  • the sealing method of the middle sealing ring 8 and the small sealing ring 9 to the small discharge port 3 is the same as that of the first embodiment, and will not be repeated.
  • Embodiment 4 This embodiment is also a modification of the above-mentioned Embodiment 1.
  • the arrangement of the small sealing ring 9 remains unchanged, and the large sealing ring 7 and the middle sealing ring 8 are removed.
  • a large extension ring is provided on the wall surface of the inner cavity top surface of the valve body 1 located outside the large discharge port 2 , and the lower end of the large extension ring is used for contacting the upper end surface of the bearing member 4 .
  • a middle extension ring 10 is arranged on the wall surface of the inner cavity top surface of the valve body 1 between the large discharge port 2 and the small discharge port 3 .
  • the large extension ring and the middle extension ring 10 cooperate with the carrier 4 to seal the large outlet 2 .
  • the sealing method of the small sealing ring 9 to the small discharge port 3 is the same as that of the first embodiment, and will not be repeated.
  • Embodiment 5 Referring to FIG. 3 , this embodiment is a modification of Embodiment 1 above.
  • the large sealing ring 7, the middle sealing ring 8 and the small sealing ring 9 are all removed.
  • a large extension ring is provided on the wall surface of the inner cavity top surface of the valve body 1 located outside the large discharge port 2 , and the lower end of the large extension ring is used for contacting the upper end surface of the bearing member 4 .
  • a small extension ring 11 is arranged on the wall between the large discharge port 2 and the small discharge port 3 on the top surface of the inner cavity of the valve body 1.
  • the diameter of the upper end of the small extension ring 11 is larger than the diameter of the inner ring of the bearing member 4, and the diameter of the lower end is smaller than that of the bearing member 4.
  • the diameter of the inner ring of the carrier 4 that is, the outer side wall of the small extension ring 11 is used to contact the hole wall of the through hole of the carrier 4 .
  • the sealing assembly can also be arranged on the first float and the second float, and directly cooperate with the large discharge port 2 and the small discharge port 3 for sealing; it can also be directly arranged on each large discharge port 2 and the small discharge port 3, and extend the sealing ring downward to cooperate with the top surface of the valve core for sealing.
  • annular sealing ring or an extension ring is used to seal the large discharge port 2 in cooperation with the bearing member 4 and the top surface of the inner cavity of the valve body 1 , and can also cooperate with the small valve core 6 to seal the small discharge port 3 .
  • the arrangement of the annular part is more convenient to realize the closing and opening of the two discharge ports. For example, when the large discharge port 2 is closed or opened, it is only necessary to fit the annular surface of the upper end of the annular member to the top surface of the inner cavity of the valve body 1. Compared with the sealing method of the sealing member such as the sealing block to the discharge port, the fit is better.
  • the area of the valve is small, so the amount of force required to close and open it is also smaller, and the opening and closing of the valve can be more flexible.
  • a pressure maintaining part is further provided.
  • the pressure maintaining part is provided on the valve body 1; specifically, the pressure maintaining part may include a lift pipe 14, a pressure maintaining shell 12 and a pressure maintaining cover 13;
  • the pressure maintaining shell 12 is provided with an accommodating cavity, and the pressure maintaining shell 12 is provided with an inflow channel and an outflow channel communicating with the accommodating cavity. At least one circulation channel 16 is opened on the inner wall surface of the accommodating cavity for communicating the inflow channel and the outflow channel.
  • the pressure-holding shell 12 is installed on the valve body 1 , and the inflow channel communicates with the small discharge port 3 .
  • the pressure-holding cover 13 is slidably connected to the accommodating cavity, and is used to cover and close the inflow channel by gravity.
  • One end of the lift pipe 14 is mounted on the valve body 1 and communicates with the small discharge port 3 .
  • the other end of the lift pipe 14 is connected to the pressure holding shell 12 and communicated with the inflow channel.
  • the pressure-holding shell 12 cooperates with the valve body 1 to form a large exhaust passage 15 through the cooperation between the lift pipe 14 and the valve body 1 .
  • a lift pipe 14 is arranged on the small discharge port 3 of the valve body 1, and a pressure keeping shell 12 is arranged on the lift tube 14, and an inflow channel is arranged in the pressure keeping shell 12 to communicate with the lift tube 14, and is provided with The accommodating cavity and the outflow channel; a sliding pressure-holding cover 13 is arranged in the accommodating cavity, and the inflow channel is closed by the gravity of the pressure-holding cover 13 itself; when the pressure in the valve body 1 is greater than that of the pressure-holding cover 13 itself When gravity is applied, the pressure-holding cover 13 can be pushed open, so that the gas can be discharged through the small discharge port 3, the inflow channel, the circulation channel 16 on the accommodating cavity and the outflow channel in sequence, so as to realize the function of a flip valve.
  • a lifting tube 14 is arranged between the valve body 1 and the pressure-holding shell 12, and the pressure-holding shell 12 is raised, so that a space between the pressure-holding shell 12 and the valve body 1 that can make the The channel through which the gas flows, so that the pressure-holding shell 12 does not interfere with the large discharge port 2, which solves the problem that the pressure-holding structure easily affects the flow area of the remaining discharge ports.
  • the pressure-maintaining assembly may further include an elastic member 15, the elastic member 15 is disposed in the accommodating cavity, and the two ends are respectively connected with the inner wall surface of the accommodating cavity and the pressure-maintaining cover 13.
  • the elastic member 15 can be a spring or other elastic member, which is not limited herein.
  • a sealing member can also be provided on the bottom surface of the pressure maintaining cover 13 , for example, a flexible rubber layer is provided on the bottom surface of the pressure maintaining cover 13 , so that the sealing effect between the pressure maintaining cover 13 and the inflow channel is better.
  • the pressure-holding shell 12 may also be provided with a number of extension pieces, which are used for fixed connection with the valve body 1 , for example, a number of connecting posts or connecting pieces may be provided, the two ends of which are respectively connected to the valve body 1 and the pressure-holding shell 12 .
  • the outer surface is connected to further strengthen the firmness of the connection between the pressure holding shell 12 and the valve body 1 .
  • the sliding mode between the pressure-holding cover 13 and the accommodating cavity of the pressure-holding shell 12 may be the cooperation of the sliding groove and the sliding rail, and the specific arrangement of the sliding groove and the sliding rail on these two components may be omitted. Specific restrictions.
  • the present embodiment uses a combination valve that can simultaneously realize the functions of a fuel-limiting valve and a flip valve to illustrate multiple embodiments.
  • the valve body 1 of the combination valve is provided with a valve core accommodating cavity, and the valve core is provided with a valve core.
  • the top surface is provided with a large discharge port 2 and a small discharge port 3 .
  • the thickness of the pressure-holding shell 12 can be designed to be thinner, and the width of the pressure-holding shell 12
  • a lifting tube 14 can be set at the bottom of the pressure-holding shell 12. The two ends of the pipe 14 are respectively communicated with the inflow channel of the casing and the small discharge port 3, so as to raise the height of the bottom surface of the pressure-holding shell 12, so that it will not interfere with the top surface of the valve body 1, so as not to interfere with the large discharge Exit 2 has an impact.
  • the width of the pressure-holding shell 12 can be designed to be smaller than the minimum diameter of the large discharge port 2, so that the lifting pipe 14 can be set or not. Connect the inflow channel directly to the small outlet 3 .
  • the volume of the accommodating cavity of this design is small, and the volume of the pressure-maintaining cover 13 that can be accommodated is also small.
  • the manner in which the elastic member 15 cooperates is more suitable for this design.
  • the pressing force of the pressure-holding cover 13 on the inflow channel is realized by its own weight, which can be set by using a material with a relatively large weight, or by using a light-weight material in cooperation with the elastic member 15 .
  • the elastic member 15 When the elastic member 15 is used, the two ends of the elastic member 15 are respectively connected with the upper end of the pressure-holding cover 13 and the top surface of the accommodating cavity. required compression force.
  • a combined valve includes the sealing structure in Embodiment 1 or Embodiment 2.
  • a sliding bearing member 4 in the valve body 1, and arranging a sealing component on the bearing member 4 and/or the valve core.
  • the large discharge port 2 is sealed by the sealing assembly in cooperation with the carrier 4, and at the same time, the first communication between the inner cavity of the valve body 1 and the small discharge port 3 can be reserved through the through hole on the carrier member 4.
  • the small discharge port 3 needs to be further closed, the small discharge port 3 can be closed by raising the small valve core 6 to seal the first communication passage. Only one bearing member 4 is needed to realize the opening and closing of two valve cores to the two discharge ports, which solves the problem that the sealing components of the existing combined valve need to be separately arranged for the two valve cores.

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Abstract

一种阀体的密封结构、阀及CFLVV阀，通过在阀体(1)内腔内设置一位于大阀芯(5)与阀体内腔顶面之间的密封部；当需要关闭大排出口(2)时，大阀芯(5)移动至关闭位置，并配合密封部关闭大排出口(2)，并形成连通小排出口(3)的第一连通通道；当需要进一步关闭小排出口(3)时，通过小阀芯(6)升起对第一连通通道进行密封即可实现对小排出口(3)的关闭。仅需一个密封部即可实现两个阀芯分别对两个排出口的打开和关闭，解决了现有组合阀的密封部件需分别针对两个阀芯单独设置的问题。

Description

一种阀体的密封结构、阀及CFLVV阀 技术领域
本发明属于阀门技术领域，尤其涉及一种阀体的密封结构、阀及CFLVV阀。
背景技术
目前市场上的燃油箱一般都会有这两个要求：1.加油限量(过量加注禁止)；2.在一些特定的情况下燃油箱可以正常排气：当燃油箱内有正压时可以及时泄压或者当燃油箱内有负压时可以及时向燃油箱内补气。一般情况下为了满足燃油箱的以上要求，一个燃油箱需要配一个加油限量阀和至少一个翻转阀。慢慢的市场上出现了一些新的设计，一个燃油箱阀同时可以满足上面所述的两个功能要求，把两个阀的功能集成在一个产品上，这样就可以减少燃油箱需要配置的阀的数量，也更容易在燃油箱上布局，我们一般称之为组合阀，也就是把加油限量阀和翻转阀组合在了一起，使一个产品同时具备两者的功能。
随着“国六”法规的颁布，随之对整个燃油系统的蒸发排放要求也越来越严苛，对燃油箱的动态泄漏(一般包括水平晃动测试，角度翻转晃动测试和六轴晃动测试等)要求也随之提高，这样就对阀门的设计就有了一定的考验，不管是加油限量阀或者翻转阀还是组合阀，因为这几种阀都是安装固定在燃油箱上的，阀芯与燃油箱内部相通，阀的管口一般都通过管路连接至碳罐。当车辆在行驶过程中出现波动时，燃油箱里面的燃料也会翻涌，如果这时阀门内部的阀芯不能及时密封排气通道，则燃料就有一定的概率翻出阀门排气通道，通过管口流出，形成泄漏现象。
而市面上现有的组合阀，一种是：组合阀整体比较大，一侧是加油限量阀的阀芯，一侧是翻转阀的阀芯，两者互不干涉，但由于两个阀芯是分开的，就导致需要分别设置与阀芯配合的密封部件；另一种是：组合阀大小和一个普通的加油限量阀相近，它是把加油限量阀的阀芯和翻转阀的阀芯叠在了一 起，小浮子叠在大浮子上，小浮子对应的实现加油限量阀的功能，大浮子对应的实现翻转阀的功能，两个叠加的形式也需要设置两个不同的密封部件进行密封。
发明内容
本发明要解决的技术问题是提供一种阀体的密封结构、阀及CFLVV阀，以解决现有组合阀的密封部件需分别针对两个阀芯单独设置的问题。
为解决上述问题，本发明的技术方案如下：
本发明的一种阀体的密封结构，设置在阀体内，所述阀体的内腔顶面上设有小排出口和绕设于所述小排出口的大排出口，所述小排出口对应第一排气通道，所述大排出口对应第二排气通道，与所述小排出口对应的为小阀芯，与所述大排出口对应的为大阀芯，包括：
密封部，设于所述阀体内腔内，且位于所述大阀芯与所述阀体内腔顶面之间，用于配合所述大阀芯密封所述大排出口，并关闭第二排气通道，形成一连通所述阀体内腔与所述小排出口的第一连通通道，且所述第一连通通道的底端与所述小阀芯相对应；
需要关闭大排出口时，所述大阀芯滑动至关闭位置并配合所述密封部密封所述大排出口，并关闭第二排气通道，形成所述第一连通通道；所述需关闭所述小排出口时，所述小阀芯滑动至关闭位置并配合所述第一连通通道的底端密封所述小排出口，关闭所述第一排气通道。
本发明的阀体的密封结构，所述密封部包括承载件和密封组件；
所述承载件活动设于所述阀体内腔内或固定连接于所述大阀芯；且所述承载件上设有与所述小排出口相匹配的通孔；
所述密封组件设于所述承载件和/或设于所述阀体内腔顶面上，用于配合所述承载件密封所述大排出口，并配合所述小排出口和所述通孔形成所述第一连通通道。
本发明的阀体的密封结构，所述密封组件包括大密封环、中密封环和小密封环；
所述大密封环和所述中密封环均设于所述承载件的上表面，且与所述大排出口相对应；所述大密封环套设于所述大排出口；所述中密封环位于所述 大排出口与所述小排出口之间；
所述小密封环设于所述通孔处，用于配合形成所述第一连通通道。
本发明的阀体的密封结构，所述密封组件包括大密封环、中延伸环和小密封环；
所述大密封环设于所述承载件的上表面，且与所述大排出口相对应，且套设于所述大排出口；所述中延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，位于所述大排出口与所述小排出口之间；
所述小密封环设于所述通孔处，用于配合形成所述第一连通通道。
本发明的阀体的密封结构，所述密封组件包括大延伸环、中密封环和小密封环；
所述大延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，且套设于所述大排出口；所述中密封环设于所述承载件的上表面，且与所述大排出口相对应，位于所述大排出口与所述小排出口之间；
所述小密封环设于所述通孔处，用于配合形成所述第一连通通道。
本发明的阀体的密封结构，所述密封组件包括大延伸环、中延伸环和小密封环；
所述大延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，且套设于所述大排出口；所述中延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，位于所述大排出口与所述小排出口之间；
所述小密封环设于所述通孔处，用于配合形成所述第一连通通道。
本发明的阀体的密封结构，所述密封组件包括大延伸环和小延伸环；
所述大延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，且套设于所述大排出口；
所述小延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应；所述小延伸环的上端位于所述大排出口与所述小排出口之间，下端直径小于所述通孔的直径；
所述大延伸环、所述小延伸环的外侧壁、所述承载件配合用于对所述大排出口进行密封；所述小延伸环用于配合所述小排出口形成所述第一连通通道。
本发明的阀体的密封结构，所述密封组件包括密封组件包括大延伸环、 中延伸环和小延伸环；
所述大延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，且套设于所述大排出口；所述中延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，位于所述大排出口与所述小排出口之间；
所述小延伸环设于所述阀体内腔顶面上，用于配合所述小排出口形成所述第一连通通道。
本发明的阀体的密封结构，所述密封组件设于所述承载件上时，所述密封组件与所述承载件一体成型；所述密封组件设于所述阀体内腔顶面时，所述密封组件与所述阀体一体成型。
本发明的阀体的密封结构，所述承载件包括承载单元和滑动单元；所述滑动单元滑动连接于所述阀体内腔；所述承载单元安装于所述滑动单元上。
本发明的阀体的密封结构，所述大排出口为绕设于小排出口的若干大排气孔；所述密封部包括密封组件，所述密封组件包括若干第一密封件和第二密封件；所述第一密封件分别设于对应的所述大排气孔，用于形成连通所述阀体内腔与所述大排气孔的第二连通通道；
所述第二密封件设于所述小排出口，用于形成所述第一连通通道。
本发明的阀体的密封结构，所述密封部包括密封组件，所述密封组件包括大密封环、中密封环和小密封环；
所述大密封环和所述中密封环均设于所述阀体内腔顶面，且与所述大排出口相对应；所述大密封环套设于所述大排出口；所述中密封环的位于所述大排出口与所述小排出口之间；
所述小密封环设于所述阀体内腔顶面，用于形成所述第一连通通道。
本发明的阀体的密封结构，所述密封部包括承载件和密封组件；所述承载件设于所述大阀芯的顶面上；且所述承载件上设有与所述小排出口相匹配的通孔；
所述密封组件包括大密封环、中密封环和小密封环；所述大密封环和所述中密封环均设于所述承载件的上表面，且与所述大排出口相对应；所述大密封环套设于所述大排出口；所述中密封环位于所述大排出口与所述小排出口之间；所述小密封环设于所述通孔处，用于配合形成所述第一连通通道。
本发明的阀体的密封结构，还包括保压部，设于所述阀体上；所述保压 部包括保压壳和保压盖；所述保压壳内设有一容置腔，所述保压壳上还设有与所述容置腔连通的流入通道和流出通道；所述保压壳设于所述阀体的顶面，且所述流入通道与所述小排出口相连通；所述保压盖滑动连接于所述容置腔，用于开关所述流入通道。
本发明的阀体的密封结构，所述保压部还包括抬高管，所述抬高管设于所述保压壳与所述阀体之间，且两端分别与所述小排出口和所述保压壳的流入通道连通；所述保压壳通过所述抬高管与所述阀体配合形成一大排气通道，所述大排气通道与所述大排出口相连通。
本发明的阀体的密封结构，所述保压部还包括弹性件，所述弹性件设于所述容置腔内，两端分别与所述容置腔的内壁面和所述保压盖相连接，用于提供所述保压盖关闭所述流入通道的压紧力。
本发明的一种阀，包括有上述任意一项所述的阀体的密封结构。
本发明的一种CFLVV阀，包括有如上述任意一项所述的阀体的密封结构。
本发明由于采用以上技术方案，使其与现有技术相比具有以下的优点和积极效果：
1、本发明一实施例通过在阀体内腔内设置一位于大阀芯与阀体内腔顶面之间的密封部；阀体内设有大排出口和小排出口，且设有与小排出口对应的第一排气通道，以及与大排出口对应的第二排气通道。当需要关闭大排出口时，大阀芯移动至关闭位置，配合密封部关闭大排出口，关闭第二排气通道并形成连通小排出口的第一连通通道；当需要进一步关闭小排出口时，通过小阀芯升起对第一连通通道进行密封，并关闭第一排气通道即可实现对小排出口的关闭。仅需一个密封部即可实现两个阀芯分别对两个排出口的打开和关闭，解决了现有组合阀的密封部件需分别针对两个阀芯单独设置的问题。
2、本发明一实施例通过在设置密封部的基础上，进一步在小排出口处设置保压部，在大排出口被密封部关闭后，实现对阀体内腔的密封，而保压部设置在小排出口的出口处，对小排出口进行了一定压力的限定。当阀体内腔内的压力达到设定的压力时，保压盖在保压壳内滑动并打开，阀体内腔内的流体即可通过保压壳排出，从而实现了翻转阀的功能。
附图说明
图1为本发明的密封结构的一种实施方式的示意图；
图2为本发明的密封结构的另一种实施方式的示意图；
图3为本发明的密封结构的另一种实施方式的示意图；
图4为本发明的密封结构的第二排气通道的示意图；
图5为本发明的密封结构的第一排气通道的示意图；
图6为本发明的密封结构的密封部设于大阀芯上的示意图；
图7为本发明的密封结构的完全关闭的示意图；
图8为本发明的密封结构的保压部的示意图；
图9为本发明的密封结构的保压部的另一示意图。
附图标记说明：1：阀体；2：大排出口；3：小排出口；4：承载件；401：密封单元；402：滑动单元；5：大阀芯；6：小阀芯；7：大密封环；8：中密封环；9：小密封环；10：中延伸环；11：小延伸环；12：保压壳；13：保压盖；14：抬高管；15：大排气通道；16：弹性件；17：流通通道。
具体实施方式
以下结合附图和具体实施例对本发明提出的一种密封结构及阀作进一步详细说明。根据下面说明和权利要求书，本发明的优点和特征将更清楚。
本实施例中所指的组合阀为可同时实现加油限量阀功能和翻转阀功能的一种组合阀，应用并安装于燃油箱内。
本实施例的一种密封结构，设置在具备双阀芯的组合阀的阀体1内，用以密封阀体1内腔顶面上的小排出口3和环设于小排出口3的大排出口2，阀体内有与小排出口3对应的第一排气通道，以及与大排出口2对应的第二排气通道，双阀芯分别为与小排出口3对应的小阀芯6和与大排出口2对应的大阀芯5。
参看图1至图5，密封结构具体包括一密封部。
该密封部设于阀体1内腔内，且位于大阀芯5与阀体1内腔顶面之间，用于配合大阀芯5密封大排出口2，并形成一连通阀体1内腔与小排出口3的第一连通通道，且第一连通通道的底端与小阀芯6相对应。
在实际操作中，组合阀针对不同的场景，需要实现两种情况。第一种情况为关闭大排出口2但小排出口3打开，第二种情况为大排出口2和小排出口3均关闭。
在第一种情况时，大阀芯5上移至阀体1内腔的顶端，并配合密封部密封大排出口2，关闭第二排气通道以及形成第一连通通道。在第二种情况时，小阀芯6上移至阀体1内腔的顶端，且小阀芯6的顶面与第一连通通道的底端配合以实现第一连通通道底端开口的密封，关闭第二排气通道，从而实现小排出口3的关闭。
参看图4、图5、图7，本实施例通过在阀体内腔内设置一位于大阀芯5与阀体1内腔顶面之间的密封部；当需要关闭大排出口2时，大阀芯5移动至关闭位置，并配合密封部关闭大排出口2，并形成连通小排出口3的第一连通通道；当需要进一步关闭小排出口3时，通过小阀芯6升起对第一连通通道进行密封即可实现对小排出口3的关闭。仅需一个密封部即可实现两个阀芯分别对两个排出口的打开和关闭，解决了现有组合阀的密封部件需分别针对两个阀芯单独设置的问题。
下面对本实施例的具体结构进行进一步说明：
在本实施例中，一种实现方式，密封部可包括承载件4和密封组件。承载件4活动设于阀体1内腔内或固定连接于大阀芯5；且承载件4上设有与小排出口3相匹配的通孔。密封组件设于承载件4和/或设于阀体1内腔顶面上，用于配合承载件4密封大排出口2，并配合小排出口3和通孔形成第一连通通道。
进一步地，当密封组件设于承载件4上时，密封组件与承载件4为一体成型。当密封组件设于阀体1内腔顶面时，密封组件与阀体1为一体成型。
进一步地，当密封组件部分设于承载件4上，部分设于阀体1上时，可分别与承载件4和阀体1一体成型。
具体地，承载件4具体可包括密封单元401和滑动单元402。滑动单元402可通过滑轨滑槽的方式滑动连接于阀体1内腔。密封单元401则安装于滑动单元402上，用于与密封组件配合实现两个排出口的打开和关闭。
在本实施例中，密封部还可以为一密封组件，该密封组件具体包括若干第一密封件和第二密封件；第一密封件分别设于对应的大排气孔2上，用于 形成连通阀体1内腔与大排气孔2的第二连通通道；第二密封件设于对应的小排出口3上，用于形成第一连通通道。
当需要关闭大排出口时，大阀芯2上移至阀体1内腔的顶端，且大阀芯5的顶面与第二连通通道的底端配合以实现第二连通通道底端开口的密封，从而实现大排出口2的关闭。当需要关闭小排出口时，小阀芯6上移至阀体1内腔的顶端，且小阀芯6的顶面与第一连通通道的底端配合以实现第一连通通道底端开口的密封，从而实现小排出口3的关闭。
在本实施例中，密封部还可为另一种密封组件，该种密封组件包括大密封环7、中密封环8和小密封环9。大密封环7、中密封环8和小密封环9均设于阀体1内腔顶面，且与大排出口2相对应。大密封环7套设于大排出口2，中密封环8的位于大排出口2与小排出口3之间，小密封环9同样设于大排出口2与小排出口3之间，用于形成第一连通通道。
当需要关闭大排出口2时，大阀芯2上移至阀体1内腔的顶端，且大阀芯5的顶面与大密封环7和中密封环8的底端配合以实现大排出口2的关闭。当需要关闭小排出口3时，小阀芯6上移至阀体1内腔的顶端，且小阀芯6的顶面与第一连通通道的底端配合以实现第一连通通道底端开口的密封，从而实现小排出口3的关闭。
参看图7，在本实施例中，密封部还可为直接设置在大阀芯上的承载件和密封组件。承载件设于大阀芯的顶面上，且承载件上设有与小排出口相匹配的通孔。密封组件可包括大密封环7、中密封环8和小密封环9。大密封环7和中密封环8均设于承载件的上表面，且与大排出口2相对应；大密封环7套设于大排出口2；中密封环8位于大排出口2与小排出口3之间；小密封环9设于通孔处，用于配合形成第一连通通道。
当需要关闭大排出口2时，大阀芯2上移至阀体1内腔的顶端，且大密封环7和中密封环8的上端与阀体内腔顶面配合以实现大排出口2的关闭。当需要关闭小排出口3时，小阀芯6上移至阀体1内腔的顶端，且小阀芯6的顶面与第一连通通道的底端配合以实现第一连通通道底端开口的密封，从而实现小排出口3的关闭。
当然，在其他实施例中，也可不采用承载件，直接将密封组件安装在大阀芯上，在此不作具体限定
实施例二
本实施例为对上述实施例一中的密封组件的多个实施方式进行的具体说明：
实施方式一：参看图1，密封组件具体包括大密封环7、中密封环8和小密封环9。
承载件4的上端面上设有大密封环7和中密封环8。
其中，大密封环7的直径需大于大排出口2的最大直径，中密封环8的直径则需小于大排出口2的最小直径以及小排出口3的最大直径。如此设置是为了保证当承载件4位于关闭位置时，可贴紧阀体1内腔顶面位于大排出口2内侧和外侧的壁面，实现对大排出口2的密封。
当密封了大排出口2后，小排出口3通过承载件4的通孔与阀体1内腔连通。为了密封小排出口3，则需在密封圈的下端面上设置小密封环9，该小密封环9的直径需大于通孔的直径。小密封环9可在小阀芯6上升时，与小阀芯6的顶面相接触并实现对小排出口3的密封。
实施方式二：参看图2，该实施方式为对上述实施方式一的改动。大密封环7和小密封环9的设置方式不变，对中密封环8进行了去除。具体为在阀体1内腔顶面位于大排出口2和小排出口3之间的壁面上，设置一中延伸环10，该中延伸环10的下端用于与承载件4的上端面相接触。以在承载件4移动至关闭位置时，配合大密封环7实现对大排出口2的密封，同时可配合承载件4的通孔实现小排出口3与阀体1内腔的连通。小密封环9的密封方式与实施方式一相同，不再赘述。
实施方式三：该实施方式同样为对上述实施方式一的改动。中密封环8和小密封环9的设置方式不变，对大密封环7进行了去除。具体为在阀体1内腔顶面位于大排出口2外侧的壁面上，设置一大延伸环，该大延伸环的下端用于与承载件4的上端面相接触。以在承载件4移动至关闭位置时，配合中密封环8实现对大排出口2的密封。中密封环8和小密封环9对小排出口3的密封方式与实施方式一相同，不再赘述。
实施方式四：该实施方式同样为对上述实施方式一的改动。小密封环9的设置方式不变，对大密封环7和中密封环8进行了去除。具体为在阀体1 内腔顶面位于大排出口2外侧的壁面上，设置一大延伸环，该大延伸环的下端用于与承载件4的上端面相接触。在阀体1内腔顶面位于大排出口2和小排出口3之间的壁面上，设置一中延伸环10，该中延伸环10的下端同样用于与承载件4的上端面相接触。以在承载件4移动至关闭位置时，大延伸环和中延伸环10配合承载件4实现对大排出口2的密封。小密封环9对小排出口3的密封方式与实施方式一相同，不再赘述。
实施方式五：参看图3，该实施方式为对上述实施方式一的改动。大密封环7、中密封环8和小密封环9均进行了去除。具体为在阀体1内腔顶面位于大排出口2外侧的壁面上，设置一大延伸环，该大延伸环的下端用于与承载件4的上端面相接触。在阀体1内腔顶面位于大排出口2和小排出口3之间的壁面上，设置一小延伸环11，小延伸环11的上端直径大于承载件4的内圈直径，下端直径小于承载件4的内圈直径，即该小延伸环11的外侧壁用于与承载件4的通孔的孔壁相接触。以在承载件4移动至关闭位置时，承载件4与小延伸环11外侧壁的配合以及大延伸环实现对大排出口2的密封。小延伸环11的下端则与小浮子的上表面配合实现对小排出口3的密封。
当然，在其他实施例中，密封组件也可以是设置在第一浮子和第二浮子上的形式，直接配合大排出口2和小排出口3进行密封；也可以是直接设置在各个大排出口2和小排出口3上，并向下延伸密封环以配合阀芯的顶面进行密封，具体的实现方式由很多，在此不作具体限定。
本实施例中采用了环形的密封环或延伸环来与承载件4和阀体1内腔顶面配合对大排出口2进行密封，并可与小阀芯6配合对小排出口3进行密封。环形部件的设置更便于实现对两个排出口的关闭和打开。例如大排出口2在关闭或打开时，仅需将环形部件上端的环面贴合于阀体1内腔顶面即可，相比于密封块等密封部件对排出口的密封方式，贴合的面积小，因此关闭和打开其所需的力的大小也更小，阀的开关也可更灵活。
实施例三
本实施例在上述实施例一或实施例二的基础上，进一步设置了保压部。
参看图8和图9，保压部，设于所述阀体1上；具体地，保压部可包括抬高管14、保压壳12和保压盖13；
其中，保压壳12内设有一容置腔，且保压壳12上设有与容置腔连通的流入通道和流出通道。容置腔的内壁面上开有至少一个流通通道16，用于连通流入通道和流出通道。该保压壳12安装于阀体1上，且流入通道与小排出口3相连通。保压盖13则滑动连接于容置腔，用于通过重力盖设并关闭流入通道。抬高管14的一端安装于阀体1上，且与小排出口3连通。抬高管14的另一端连接于保压壳12，且与流入通道连通。保压壳12通过抬高管14与阀体1之间配合形成一大排气通道15，该大排气通道15与大排出口2相连通，用于排出大排出口2排出的气体。
本实施例通过在阀体1的小排出口3上设置抬高管14，并在抬高管14上设置保压壳12，保压壳12内设置流入通道与抬高管14连通，并设置容置腔和流出通道；在容置腔内设置滑动的保压盖13，通过保压盖13自身的重力来对流入通道进行关闭操作；当阀体1内的压力大于保压盖13自身的重力时，即可推开保压盖13，使得气体可依次经过小排出口3、流入通道、容置腔上的流通通道16和流出通道排出，实现翻转阀的功能。在实现翻转阀的基础上，在阀体1与保压壳12之间设置抬高管14，将保压壳12进了抬高，使得保压壳12与阀体1之间生成了可以使气体流过的通道，从而使得保压壳12不会对大排出口2产生干涉，解决了保压结构易影响其余排出口的流通面积的问题。
在本实施例中，保压组件还可包括弹性件15，弹性件15设于容置腔内，两端分别与容置腔的内壁面和保压盖13相连接。当采用弹性件15时，保压盖13对流入通道的压紧力大小就会变成自身重力加上弹性件15施加的弹性力。该弹性件15可为弹簧或其他具有弹力的部件，在此不作具体限定。
进一步地，还可在保压盖13的底面上设置密封件，例如在保压盖13的底面上设置一柔性橡胶层，使得保压盖13与流入通道之间的密封效果更好。
进一步地，保压壳12上还可设有若干延伸件，延伸件用于与阀体1固定连接，例如可设置若干连接柱或连接片，两端分别与阀体1和保压壳12的外表面连接，以进一步加固保压壳12与阀体1之间连接的牢固性。
在本实施例中，保压盖13与保压壳12的容置腔之间的滑动方式可以是滑槽与滑轨的配合，滑槽、滑轨具体如何设置在这两个部件上可不做具体限定。
接下去，本实施例以可同时实现加油限量阀功能和翻转阀功能的组合阀对多个实施方式进行举例说明，该组合阀的阀体1内设有阀芯容置腔，且阀芯的顶面设有大排出口2和小排出口3。
参看图，当阀体1与连接法兰配合形成的与外部部件连接的流体排出腔室的高度较低时，可将保压壳12的厚度设计的薄一些，则保压壳12的宽度就会变大，为了避免保压壳12太宽导致对大排出口2发生干涉，使得大排出口2的流通面积减小，即可在保压壳12的底部设置抬高管14，该抬高管14的两端分别与外壳的流入通道和小排出口3连通，以将保压壳12的底面的高度抬升，使之不会与阀体1的顶面发生干涉，从而不会对大排出口2产生影响。
参看图，当流体排出腔室的高度较高时，则可将保压壳12的宽度设计为小于大排出口2的最小直径，这样即可设置抬高管14也可不设置抬高管14，直接将流入通道与小排出口3连接。该种设计的容置腔的体积较小，可容纳的保压盖13的体积也较小，小体积保压盖13的自重可能不满足所需的压紧力要求，故保压盖13与弹性件15配合的方式更为适宜该种设计。
进一步地，保压盖13对流入通道的压紧力通过自重实现，可采用重量较大的材质，也可采用轻质材料与弹性件15配合的方式进行设置。采用弹性件15时，弹性件15的两端则分别与保压盖13的上端和容置腔的顶面相连接，通过弹性件15的弹性力与保压盖13的重力配合形成关闭流入通道所需的压紧力。
实施例四
一种组合阀，包括有实施例一或实施例二中的密封结构。通过在阀体1内设置一滑动的承载件4，并在承载件4和/或阀芯上设置密封组件。当需要关闭大排出口2时，由密封组件配合承载件4对大排出口2进行密封，同时可通过承载件4上的通孔留出阀体1内腔连通小排出口3的第一连通通道；当需要进一步关闭小排出口3时，通过小阀芯6升起对第一连通通道进行密封即可实现对小排出口3的关闭。仅需一个承载件4即可实现两个阀芯对两个排出口的打开和关闭，解决了现有组合阀的密封部件需分别针对两个阀芯单独设置的问题。
上面结合附图对本发明的实施方式作了详细说明，但是本发明并不限于上述实施方式。即使对本发明作出各种变化，倘若这些变化属于本发明权利要求及其等同技术的范围之内，则仍落入在本发明的保护范围之中。

Claims (18)

  1. 一种阀体的密封结构，其特征在于，设置在一种阀的阀体内，所述阀体内腔顶面上设有小排出口和绕设于所述小排出口的大排出口，所述小排出口对应第一排气通道，所述大排出口对应第二排气通道，与所述小排出口对应的为小阀芯，与所述大排出口对应的为大阀芯，包括：
    密封部，设于所述阀体内腔内，且位于所述大阀芯与所述阀体内腔顶面之间，用于配合所述大阀芯密封所述大排出口，并关闭第二排气通道，形成一连通所述阀体内腔与所述小排出口的第一连通通道，且所述第一连通通道的底端与所述小阀芯相对应；
    需要关闭大排出口时，所述大阀芯滑动至关闭位置并配合所述密封部密封所述大排出口，并关闭第二排气通道，形成所述第一连通通道；所述需关闭所述小排出口时，所述小阀芯滑动至关闭位置并配合所述第一连通通道的底端密封所述小排出口，关闭所述第一排气通道。
  2. 如权利要求1所述的阀体的密封结构，其特征在于，所述密封部包括承载件和密封组件；
    所述承载件活动设于所述阀体内腔内或固定连接于所述大阀芯；且所述承载件上设有与所述小排出口相匹配的通孔；
    所述密封组件设于所述承载件和/或设于所述阀体内腔顶面上，用于配合所述承载件密封所述大排出口，并配合所述小排出口和所述通孔形成所述第一连通通道。
  3. 如权利要求2所述的阀体的密封结构，其特征在于，所述密封组件包括大密封环、中密封环和小密封环；
    所述大密封环和所述中密封环均设于所述承载件的上表面，且与所述大排出口相对应；所述大密封环套设于所述大排出口；所述中密封环位于所述大排出口与所述小排出口之间；
    所述小密封环设于所述通孔处，用于配合形成所述第一连通通道。
  4. 如权利要求2所述的阀体的密封结构，其特征在于，所述密封组件包括大密封环、中延伸环和小密封环；
    所述大密封环设于所述承载件的上表面，且与所述大排出口相对应，且 套设于所述大排出口；所述中延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，位于所述大排出口与所述小排出口之间；
    所述小密封环设于所述通孔处，用于配合形成所述第一连通通道。
  5. 如权利要求2所述的阀体的密封结构，其特征在于，所述密封组件包括大延伸环、中密封环和小密封环；
    所述大延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，且套设于所述大排出口；所述中密封环设于所述承载件的上表面，且与所述大排出口相对应，位于所述大排出口与所述小排出口之间；
    所述小密封环设于所述通孔处，用于配合形成所述第一连通通道。
  6. 如权利要求2所述的阀体的密封结构，其特征在于，所述密封组件包括大延伸环、中延伸环和小密封环；
    所述大延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，且套设于所述大排出口；所述中延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，位于所述大排出口与所述小排出口之间；
    所述小密封环设于所述通孔处，用于配合形成所述第一连通通道。
  7. 如权利要求2所述的阀体的密封结构，其特征在于，所述密封组件包括大延伸环和小延伸环；
    所述大延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，且套设于所述大排出口；
    所述小延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应；所述小延伸环的上端位于所述大排出口与所述小排出口之间，下端直径小于所述通孔的直径；
    所述大延伸环、所述小延伸环的外侧壁、所述承载件配合用于对所述大排出口进行密封；所述小延伸环用于配合所述小排出口形成所述第一连通通道。
  8. 如权利要求2所述的阀体的密封结构，其特征在于，所述密封组件包括密封组件包括大延伸环、中延伸环和小延伸环；
    所述大延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，且套设于所述大排出口；所述中延伸环设于所述阀体内腔顶面上，且与所述大排出口相对应，位于所述大排出口与所述小排出口之间；
    所述小延伸环设于所述阀体内腔顶面上，用于配合所述小排出口形成所述第一连通通道。
  9. 如权利要求2所述的阀体的密封结构，其特征在于，所述密封组件设于所述承载件上时，所述密封组件与所述承载件一体成型；所述密封组件设于所述阀体内腔顶面时，所述密封组件与所述阀体一体成型。
  10. 如权利要求2所述的阀体的密封结构，其特征在于，所述承载件包括承载单元和滑动单元；所述滑动单元滑动连接于所述阀体内腔；所述承载单元安装于所述滑动单元上。
  11. 如权利要求1所述的阀体的密封结构，其特征在于，所述大排出口为绕设于小排出口的若干大排气孔；所述密封部包括密封组件，所述密封组件包括若干第一密封件和第二密封件；所述第一密封件分别设于对应的所述大排气孔，用于形成连通所述阀体内腔与所述大排气孔的第二连通通道；
    所述第二密封件设于所述小排出口，用于形成所述第一连通通道。
  12. 如权利要求1所述的阀体的密封结构，其特征在于，所述密封部包括密封组件，所述密封组件包括大密封环、中密封环和小密封环；
    所述大密封环和所述中密封环均设于所述阀体内腔顶面，且与所述大排出口相对应；所述大密封环套设于所述大排出口；所述中密封环的位于所述大排出口与所述小排出口之间；
    所述小密封环设于所述阀体内腔顶面，用于形成所述第一连通通道。
  13. 如权利要求1所述的阀体的密封结构，其特征在于，所述密封部包括承载件和密封组件；所述承载件设于所述大阀芯的顶面上；且所述承载件上设有与所述小排出口相匹配的通孔；
    所述密封组件包括大密封环、中密封环和小密封环；所述大密封环和所述中密封环均设于所述承载件的上表面，且与所述大排出口相对应；所述大密封环套设于所述大排出口；所述中密封环位于所述大排出口与所述小排出口之间；所述小密封环设于所述通孔处，用于配合形成所述第一连通通道。
  14. 如权利要求1所述的阀体的密封结构，其特征在于，还包括保压部，设于所述阀体上；所述保压部包括保压壳和保压盖；所述保压壳内设有一容置腔，所述保压壳上还设有与所述容置腔连通的流入通道和流出通道；所述保压壳设于所述阀体的顶面，且所述流入通道与所述小排出口相连通；所述 保压盖滑动连接于所述容置腔，用于开关所述流入通道。
  15. 如权利要求14所述的阀体的密封结构，其特征在于，所述保压部还包括抬高管，所述抬高管设于所述保压壳与所述阀体之间，且两端分别与所述小排出口和所述保压壳的流入通道连通；所述保压壳通过所述抬高管与所述阀体配合形成一大排气通道，所述大排气通道与所述大排出口相连通。
  16. 如权利要求14所述的阀体的密封结构，其特征在于，所述保压部还包括弹性件，所述弹性件设于所述容置腔内，两端分别与所述容置腔的内壁面和所述保压盖相连接，用于提供所述保压盖关闭所述流入通道的压紧力。
  17. 一种阀，其特征在于，包括有如权利要求1-16任意一项所述的阀体的密封结构。
  18. 一种CFLVV阀，其特征在于，包括有如权利要求1-16任意一项所述的阀体的密封结构。
PCT/CN2021/073574 2020-11-26 2021-01-25 一种阀体的密封结构、阀及cflvv阀 WO2022110533A1 (zh)

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CN102062220A (zh) * 2010-11-05 2011-05-18 西华大学 超高压自动排气、泄压阀
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CN206309954U (zh) * 2016-12-26 2017-07-07 肇庆市和邦机械制造有限公司 一种双级出料阀
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WO2001050045A2 (de) * 2000-01-05 2001-07-12 Sartorius Ag Ventile für flüssigkeiten und gase
CN1414273A (zh) * 2002-11-26 2003-04-30 大连理工大学 与爆破片组合的常开先导式安全阀
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