WO2024027215A1 - 一种气阀 - Google Patents

一种气阀 Download PDF

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Publication number
WO2024027215A1
WO2024027215A1 PCT/CN2023/089818 CN2023089818W WO2024027215A1 WO 2024027215 A1 WO2024027215 A1 WO 2024027215A1 CN 2023089818 W CN2023089818 W CN 2023089818W WO 2024027215 A1 WO2024027215 A1 WO 2024027215A1
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WO
WIPO (PCT)
Prior art keywords
valve core
valve
air
core
sealing
Prior art date
Application number
PCT/CN2023/089818
Other languages
English (en)
French (fr)
Inventor
石正兵
Original Assignee
广东太力科技集团股份有限公司
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
Application filed by 广东太力科技集团股份有限公司 filed Critical 广东太力科技集团股份有限公司
Publication of WO2024027215A1 publication Critical patent/WO2024027215A1/zh

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Classifications

    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2038—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum with means for establishing or improving vacuum

Definitions

  • the present invention relates to the technical field of vacuum bag air valves, and in particular to an air valve.
  • Vacuum compression bags are generally equipped with air valves for pumping or exhausting air.
  • the patent with the publication number CN109850356A discloses an air valve named "A gas nozzle structure for vacuum compression bags".
  • air valves use an air plug that can move up and down to open or close the exhaust port. After the exhaust is completed, use a cover that can rotate up and down to compress the air plug to achieve sealing.
  • An upwardly convex cylindrical structure is provided, and the cover is installed on the cylindrical structure.
  • the problem with such an air valve is that the overall height is relatively large, resulting in a larger thickness of the vacuum bag equipped with such an air valve after folding and storage.
  • the air plug has a guide pillar located in the exhaust port. When exhausting, the air flow needs to be discharged from the gap between the guide pillar and the inner wall of the exhaust port, resulting in unsatisfactory exhaust speed.
  • the object of the present invention is to provide an air valve that is beneficial to reducing the overall height and having a fast exhaust speed.
  • An air valve including a valve seat.
  • the valve seat is provided with an exhaust channel that penetrates up and down and a valve core for opening and closing the upper port of the exhaust channel. There is a gap between the valve core and the exhaust channel.
  • a sealing structure is provided, and the valve core is flippably connected to the valve seat, so that when the air valve is exhausted, the air flow in the exhaust channel can push open the valve core, and the valve core is flipped open at an angle Less than 90 degrees, so that the valve core can automatically close after the exhaust of the air valve is completed, and a supporting frame is provided on the lower surface of the valve seat.
  • the supporting frame includes a plurality of ribs, and each rib is distributed in a radial manner with the axis of the exhaust channel as the center.
  • valve core when the valve core is in a closed state, it is covered at the upper port of the exhaust channel, the valve core is a rigid piece, and the valve core is hingedly connected to the valve seat.
  • the air pressure in the exhaust passage is greater than the air pressure on the upper surface of the valve core, the entire valve core can be driven to rotate and open.
  • an accommodating groove is provided on the upper surface of the valve seat.
  • the valve core includes a rotating arm that is adapted to the accommodating groove, and a cover located on the left side of the rotating arm that can cover the upper port of the exhaust channel.
  • the joint part is provided with the pivot hole on the rotating arm.
  • the bottom of the accommodation tank is provided with a slope that gradually decreases from an end far away from the hinge of the valve core to an end close to the hinge of the valve core.
  • valve core is connected with a return elastic member that can drive it to rotate to a closed state.
  • the lower surface of the valve core is provided with a connecting post located on the right side of the pivot hole, and the bottom surface of the accommodation groove is provided with a positioning hole located below the connecting post.
  • the reset elastic member is a compression spring, the upper end of the compression spring is sleeved on the connecting column, and the lower end of the compression spring is inserted into the positioning hole.
  • the valve seat is hinged on the right side of the valve core
  • the reset elastic member is an elastic tension member connecting the left side of the valve core and the valve seat.
  • the sealing structure is arranged in the middle of the valve core.
  • a first hook is provided on the left edge of the valve core, a second hook is provided on the valve seat, and the elastic pulling member is connected between the first hook and the second hook.
  • the left side of the valve core is provided with a handle for opening the valve core by hand.
  • the upper port of the exhaust channel is provided with a tapered surface that gradually expands from bottom to top
  • the sealing structure includes a valve core that is provided on the valve core and can be pressed against the valve core.
  • the sealing ring on the cone surface.
  • a mounting platform is provided on the lower surface of the valve core, and a sealing groove surrounding the mounting platform is provided on the outer wall of the mounting platform, and the sealing ring is sleeved in the sealing groove.
  • the outer part of the sealing ring protrudes from the outer wall of the mounting platform.
  • a locking device capable of locking the valve core and the valve seat when the valve core is in a closed state is provided between the valve core and the valve seat.
  • the valve core is hingedly connected to the valve seat, and the sealing structure and the upper port of the exhaust channel are located on the left side of the rotation axis of the valve core.
  • a limiting platform is provided on the right side of the rotation axis of the valve core.
  • the locking device includes a movable locking cover movably arranged on the valve core. The movable locking cover is driven by an external force and moves to the position where the valve core rotates. The valve core is locked when the limiting platform is in a contact position, and the valve core is unlocked when the movable locking cover is disengaged from the limiting platform.
  • the movable locking cover member is mounted on the valve core movably left and right, and the valve core is provided with a guide structure capable of guiding the movable locking cover member.
  • a locking device capable of restricting the leftward movement of the movable locking cover when the valve core is in a locked state is further provided between the valve core and the movable locking cover.
  • the movable locking cover is a plate
  • the locking device includes a first locking block disposed on the upper surface of the valve core, and a first locking block disposed on the upper surface of the movable lock.
  • the second locking block on the lower surface of the cover, the left and right sides of the first locking block are slopes, the left and right sides of the second locking block are slopes, and the movable locking cover faces
  • the second locking block crosses over the first locking block and snaps onto the slope on the right side of the first locking block.
  • the guide structure includes a long hole provided on the valve core, and the movable lock cover is provided with a buckle passing through the long hole.
  • the lower end of the buckle has a buckle position that can restrict the buckle from moving upward from the elongated hole.
  • the valve seat is provided with a sealing groove arranged around the upper port of the exhaust channel, and the sealing structure includes a sealing ring disposed in the sealing groove. The top of the ring protrudes from the upper edge of the sealing groove so that the valve core can press the sealing ring.
  • an upwardly protruding annular gas nozzle is provided at the upper port of the exhaust passage, and the sealing structure includes a sealing sheet disposed on the lower surface of the valve core. When the core is in a closed state, the sealing piece is pressed against the upper end surface of the annular gas nozzle.
  • an upwardly protruding annular gas nozzle is provided at the upper port of the exhaust channel, and the sealing structure includes a sealing ring, and the lower surface of the sealing ring has an annular shape similar to that of the annular gas nozzle.
  • the annular gas nozzle fits into an annular groove.
  • the annular gas nozzle is stuck in the annular groove and interference-fits with the sealing ring.
  • the valve seat is provided with a sealing groove arranged around the upper port of the exhaust channel, and the sealing structure includes a sealing ring disposed in the sealing groove.
  • the core is plate-shaped, and the lower surface of the valve core is provided with an annular pressing platform capable of pressing the upper surface of the sealing ring.
  • valve core is rotatably connected to the valve seat through a soft connecting edge.
  • the present invention uses a rotary opening and closing type valve core to replace the up and down moving air plug in the existing air valve, and eliminates the cover body used to hold down the air plug and the cylindrical structure used to install the cover body.
  • the overall height is greatly reduced, which is convenient for transportation and storage.
  • the valve core can be turned over and opened as a whole during the exhaust state, so that the upper port of the exhaust channel is open.
  • the exhaust opening is larger. , which is helpful to increase the exhaust speed.
  • Figure 1 is a perspective view of Embodiment 1 of the present invention.
  • Figure 2 is an exploded view of Embodiment 1 of the present invention.
  • Figure 3 is a cross-sectional view of Embodiment 1 of the present invention when the valve core is in a closed state;
  • Figure 4 is a cross-sectional view of Embodiment 1 of the present invention when the valve core is in an open state;
  • Figure 5 is a perspective view of Embodiment 2 of the present invention.
  • Figure 6 is an exploded view of Embodiment 2 of the present invention.
  • Figure 7 is a cross-sectional view of Embodiment 2 of the present invention when the valve core is in a closed state
  • Figure 8 is a cross-sectional view of Embodiment 2 of the present invention when the valve core is in an open state
  • Figure 9 is a perspective view of the movable lock cover in Embodiment 2 of the present invention.
  • Figure 10 is a cross-sectional view of Embodiment 3 of the present invention when the valve core is in a closed state;
  • Figure 11 is a cross-sectional view of Embodiment 3 of the present invention when the valve core is in an open state
  • Figure 12 is an exploded view of Embodiment 3 of the present invention.
  • Figure 13 is a cross-sectional view of Embodiment 4 of the present invention when the valve core is in a closed state;
  • Figure 14 is a cross-sectional view of Embodiment 5 of the present invention when the valve core is in a closed state;
  • Figure 15 is a cross-sectional view of Embodiment 6 of the present invention when the valve core is in a closed state;
  • Figure 16 is a cross-sectional view of Embodiment 7 of the present invention when the valve core is in a closed state;
  • Figure 17 is a cross-sectional view of Embodiment 8 of the present invention when the valve core is in a closed state.
  • the present invention proposes a gas valve, including a valve seat 1.
  • the valve seat 1 is provided with an exhaust passage 101 and a valve core 2 for opening and closing the exhaust passage 101.
  • the valve core 2 and the exhaust A sealing structure is provided between the channels 101, and the valve core 2 is reversibly connected to the valve seat 1 so that the air flow in the exhaust channel 101 can push open the valve core 2 when the air valve is exhausted.
  • the valve seat 1 is provided with a limiting surface that can contact the valve core 2 when the valve core 2 is opened. Under the action, the valve core 2 flips open at an angle less than 90 degrees, so that the valve core 2 can automatically close under the action of its own gravity or negative pressure suction after the air valve is exhausted.
  • a support frame 102 is provided on the lower surface of the valve seat 1.
  • the support frame 102 includes a plurality of ribs, and each rib is distributed radially with the axis of the exhaust channel 101 as the center.
  • the design of the support frame 102 facilitates the discharge of gas in the vacuum bag.
  • the present invention uses a rotary opening and closing type valve core 2 to replace the up and down moving air plug in the existing air valve, and eliminates the cover body used to hold down the air plug and the cylindrical structure used to install the cover body.
  • the overall height of the air valve Significantly reduced, conducive to transportation and warehousing.
  • the valve core 2 can be turned over and opened as a whole in the exhaust state, so that the upper port of the exhaust channel 101 is open. Compared with the existing air valve, the exhaust opening is larger. It is helpful to increase the exhaust speed.
  • valve core 2 is connected with a return elastic member that can drive it to rotate to a closed state. After the exhaust is completed, the automatic valve core 2 can be driven to return to the closed state under the elastic force of the elastic return member.
  • FIGS 1 to 4 show Embodiment 1 of the present invention.
  • the valve core 2 is a rigid piece, and the valve core 2 is hinged with the valve seat 1 so that the air pressure in the exhaust channel 101 is greater than the upper pressure of the valve core 2.
  • the air pressure on the surface can drive the valve core 2 to rotate and open as a whole.
  • the upper port of the exhaust channel 101 is provided with a cone surface 103 that gradually expands from bottom to top.
  • the sealing structure includes a sealing ring 4 that is provided on the valve core 2 and can be pressed against the cone surface 103 .
  • the sealing ring 4 can be an O-ring or other types of sealing structures.
  • the sealing ring 4 adopts an O-ring, it adopts the following structure for supporting installation: a mounting platform 21 is provided on the lower surface of the valve core 2, and a sealing groove 22 surrounding the mounting platform 21 is provided on the outer wall of the mounting platform 21.
  • the sealing ring 4 is sleeved in the sealing groove 22 and the outer part of the sealing ring 4 protrudes from the outer wall of the mounting platform 21 .
  • the valve core 2 is closed, the outer part of the sealing ring 4 is pressed against the above-mentioned cone surface 103, and the sealing effect is excellent.
  • an accommodating groove 107 is provided on the upper surface of the valve seat 1.
  • the valve core 2 When the valve core 2 is in a closed state, it is received in the accommodating groove 107 so that the upper surface of the valve core 2 is not higher than the upper surface of the valve seat 1.
  • space can be effectively utilized, so that the valve core 2 does not bulge when it is in the closed state, and the thickness can be further reduced.
  • the valve core 2 is provided with a pivot hole 25 , and the inner wall of the accommodating groove 107 is provided with a rotating shaft that rotates with the pivot hole 25 so that the valve core 2 and the valve seat 1 are hingedly connected.
  • the valve core 2 includes a rotating arm 201 that matches the accommodation groove 107, and a cover portion 202 located on the left side of the rotating arm 201 that can cover the upper port of the exhaust channel 101.
  • the pivot hole 25 is provided in the rotating arm 201. superior.
  • the rotating arm 201 and the cover part 202 are an integrated rigid structure. With such a design, the valve core 2 rotates as a whole when it is rotated and opened, and the rotation response is fast.
  • the bottom of the accommodating groove 107 is provided with a slope 104 that gradually decreases from left to right, and the upper port of the exhaust channel 101 is provided on the slope 104 .
  • the return elastic member is a compression spring 31.
  • the lower surface of the valve core 2 is provided with a connecting column 26 located on the right side of the pivot hole 25, and is provided on the bottom surface of the accommodation groove 107.
  • the upper end of the compression spring 31 is sleeved on the connecting column 26.
  • the lower end of the compression spring 31 is inserted into the positioning hole 109.
  • the compression spring 31 is provided with the connecting column 26 and the positioning hole 109. Positioning can ensure that the compression spring 31 will not leave the working position during use. 2.
  • the reset elastic member adopts a torsion spring that can drive the valve core 2 to rotate and close.
  • a pressing portion located on the right side of the pivot hole 25 is formed on the valve core 2 so that when the pressing portion is pressed, the valve core 2 can be driven to rotate to the open state.
  • the valve core 2 can be opened by pressing the pressing part, so that external air can quickly enter the bag body.
  • valve core 2 When the air valve of this embodiment is in the exhaust state, the valve core 2 will flip over. At this time, the greater the pressure applied to the vacuum bag or the suction force applied to the air valve, the greater the opening angle of the valve core 2, and the exhaust will be correspondingly The faster the response, when the exhaust is stopped, the valve core 2 is reset under the action of its own gravity, the negative pressure suction in the vacuum bag, or the elastic force of the reset elastic member, causing the valve core 2 to close, and the valve core 2 is closed through the sealing ring on the valve core 2. 4 is in contact with the cone surface 103 on the valve seat 1 and has excellent sealing performance.
  • the upper port of the exhaust channel 101 is located on the above-mentioned slope 104, which can give the valve core 2 a certain avoidance space and prevent the valve core 2 from coming into contact with the valve seat 1 before it is flipped to the closed state and unable to accurately return to the closed state. Location.
  • FIGS 5 to 9 show Embodiment 2 of the present invention.
  • This embodiment has a similar structure to Embodiment 1. The difference is that this embodiment also adds a feature that can turn the valve when the valve core 2 is in a closed state. Locking device for locking core 2 and valve seat 1.
  • the valve seat 1 is provided with a limiting platform 106 located on the right side of the rotation axis of the valve core 2.
  • the locking device includes a movable locking cover 5 movably provided on the valve core 2.
  • the movable locking cover 5 is controlled by an external force.
  • the valve core 2 is locked when driven and moved to a position in contact with the limiting platform 106 , and the valve core 2 is unlocked when the movable locking cover 5 is disengaged from the limiting platform 106 .
  • the movable lock cover 5 can be provided with a rotary type, or can be provided with a left-right movable type. Among them, the mobile solution is the best.
  • the movable locking cover 5 When the movable locking cover 5 is adopted as a mobile solution, the movable locking cover 5 is movably installed on the valve core 2 left and right, and the valve core 2 is provided with a guide structure that can guide the movable locking cover 5 .
  • the movable locking cover 5 is driven by an external force and moves to the right to lock the valve core 2 when it is in contact with the limiting platform 106.
  • the valve core 2 is locked. 2 unlocked.
  • a locking device capable of restricting the leftward movement of the movable locking cover 5 when the valve core 2 is in a locked state is provided between the valve core 2 and the movable locking cover 5 .
  • the movable locking cover 5 is a hard plastic plate with a certain degree of elasticity.
  • the locking device includes a first locking block 27 provided on the upper surface of the valve core 2 and a first locking block 27 provided on the upper surface of the valve core 2 . 5 the second locking block 51 and the first locking block 27 on the lower surface The left and right sides of the second locking block 51 are slopes, and the left and right sides of the second locking block 51 are slopes.
  • the guide structure includes a long hole 28 provided on the valve core 2.
  • the movable lock cover 5 is provided with a buckle 52 that passes through the long hole 28.
  • the lower end of the buckle 52 has a structure that can limit the buckle 52 from upwardly escaping from the long hole. 28 buckle position 53.
  • the function of the locking device is to keep the movable locking cover 5 in a locked state of the valve core 2 and the valve seat 1 when the movable locking cover 5 is not subject to external force, thereby preventing the valve from centering when the valve is tilted.
  • the movable lock cover 5 will move under the action of gravity to unlock the valve core 2 and valve seat 1.
  • the working principle of the rotation opening and closing of the valve core 2 is the same as that in Embodiment 1, that is, the valve core 2 in this embodiment will flip when the air valve is in the exhaust state.
  • the pressure exerted on the vacuum bag or the air The greater the suction force exerted by the valve, the greater the opening angle of the valve core 2, and the corresponding faster exhaust.
  • the valve core 2 is reset under the elastic force of the reset elastic member, so that the seal on the valve core 2 is The ring 4 is in contact with the cone surface 103 on the valve seat 1 for sealing, and the sealing performance is excellent.
  • the upper port of the exhaust channel 101 is located on the above-mentioned slope 104, which can give the valve core 2 a certain avoidance space and prevent the valve core 2 from coming into contact with the valve seat 1 before it is flipped to the closed state and unable to accurately return to the closed state. Location.
  • this embodiment also has the following advantages: after the exhaust is completed and the valve core 2 returns to the closed state, the valve core 2 can be locked by moving or rotating the movable locking cover 5 to achieve Permanently sealed to prevent valve core 2 from losing its sealing effect due to accidental contact.
  • the locking device can also adopt other structural forms, such as: using a pin to lock the valve core 2 and the valve seat 1; another example: setting a hook on the valve seat 1, and at the same time setting a hook on the valve core 2 An annular rope is provided on the hook, and the valve core 2 and the valve seat 1 can be locked when the free end of the annular rope is fastened to the above hook.
  • Figures 9 to 12 show Embodiment 3 of the present invention.
  • the upper port of the exhaust channel 101 is provided with a tapered surface 103 that gradually expands from bottom to top.
  • the sealing structure includes a sealing structure provided on the valve core 2 and can press the sealing ring 4 on the cone surface 103.
  • the sealing ring 4 can be an O-ring or other types of sealing structures.
  • the sealing ring 4 adopts an O-ring, it adopts the following structure for supporting installation: a mounting platform 21 is provided on the lower surface of the valve core 2, and a sealing groove surrounding the mounting platform 21 is provided on the outer wall of the mounting platform 21. 22.
  • the sealing ring 4 is set in the sealing groove 22 and the outer part of the sealing ring 4 protrudes from the outer wall of the mounting platform 21.
  • an accommodating groove 107 is provided on the upper surface of the valve seat 1.
  • the valve core 2 When the valve core 2 is in a closed state, it is received in the accommodating groove 107 so that the upper surface of the valve core 2 is not higher than the upper surface of the valve seat 1.
  • space can be effectively utilized, so that the valve core 2 does not bulge when it is in the closed state, and the thickness can be further reduced.
  • the valve core 2 is provided with a pivot hole 25, and the inner wall of the accommodating groove 107 is provided with a rotating shaft that rotates with the pivot hole 25 so that the valve core 2 and the valve seat 1 are hingedly connected.
  • the return elastic member is an elastic tension member 32 that connects the left side of the valve core 2 with the valve seat 1 , and the sealing structure is provided in the middle of the valve core 2 .
  • a first hook 29 is provided on the left edge of the valve core 2
  • a second hook 108 is provided on the valve seat 1
  • the elastic pulling member 32 is an elastic rope, a rubber band or a rubber band connected between the first hook 29 and the second hook 108.
  • Tension spring Two hooks are used to connect the elastic tension member 32 to facilitate removal and replacement of the elastic tension member 32 when it fails.
  • valve core 2 Furthermore, the left side of the valve core 2 is provided with a handle 20 for opening the valve core 2 manually. It is convenient for the user to open the valve core 2.
  • valve core 2 When the air valve of this embodiment is in the exhaust state, the valve core 2 will flip over. At this time, the greater the pressure applied to the vacuum bag or the suction force applied to the air valve, the greater the opening angle of the valve core 2, and the exhaust will be correspondingly The faster the response, when the exhaust is stopped, the valve core 2 is reset under the elastic force of the reset elastic member, so that the sealing ring 4 on the valve core 2 contacts the cone surface 103 on the valve seat 1 for sealing, and the sealing performance is excellent.
  • FIG. 13 shows Embodiment 4 of the present invention.
  • This embodiment has a similar structure to Embodiment 2, and the difference lies in the specific form of the sealing structure.
  • the valve seat 1 is provided with a sealing groove 22 arranged around the upper port of the exhaust channel 101.
  • the sealing structure includes a sealing ring 4 disposed in the sealing groove 22. The top of the sealing ring 4 protrudes from the sealing groove 22. The upper edge of the valve core 2 can press the sealing ring 4.
  • FIG. 14 shows Embodiment 5 of the present invention.
  • This embodiment has a similar structure to Embodiment 2, and the difference lies in the specific form of the sealing structure.
  • annular gas nozzle 111 is provided at the upper port of the exhaust channel 101.
  • the sealing structure includes a sealing sheet 7 disposed on the lower surface of the valve core 2. When the valve core 2 is in a closed state, the sealing sheet 7 Press it on the upper end surface of the annular air nozzle 111.
  • FIG. 15 shows Embodiment 6 of the present invention.
  • This embodiment has a similar structure to Embodiment 2, and the difference lies in the specific form of the sealing structure.
  • annular gas nozzle 111 is provided at the upper port of the exhaust channel 101.
  • the sealing structure includes a sealing ring 4.
  • the lower surface of the sealing ring 4 has an annular groove 41 that matches the annular gas nozzle 111.
  • the annular air nozzle 111 is stuck in the annular groove 41 and is an interference fit with the sealing ring 4.
  • FIG 16 shows Embodiment 7 of the present invention.
  • This embodiment has a similar structure to Embodiment 2, and the difference lies in the specific form of the sealing structure.
  • the valve seat 1 is provided with a sealing groove 22 arranged around the upper port of the exhaust channel 101.
  • the sealing structure includes a sealing ring 4 disposed in the sealing groove 22.
  • the valve core 2 is plate-shaped.
  • the lower surface is provided with an annular pressing platform 8 capable of pressing the upper surface of the sealing ring 4 .
  • FIG 17 shows Embodiment 8 of the present invention.
  • This embodiment has a similar structure to Embodiment 8, and the difference lies in the specific form of the rotation connection structure of the valve seat 1 and the valve core 2.
  • the valve core 2 is rotatably connected to the valve seat 1 through a soft connecting edge 9 .
  • the connecting edge 9 is generally made of deformable plastic material.
  • the connecting edge 9 is thinner to facilitate bending. When the valve core 2 rotates, the connecting edge 9 is bent and deformed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Abstract

一种气阀，包括阀座（1），阀座（1）上设置有排气通道（101）和用于启闭排气通道（101）的阀芯（2），阀芯（2）和排气通道（101）之间设置有密封结构，阀芯（2）可翻转开合地连接在阀座（1）上，使得气阀排气时排气通道（101）内的气流能够顶开阀芯（2）。本气阀采用转动开合式的阀芯（2），降低了气阀的整体高度，利于运输和仓储。

Description

一种气阀 技术领域
本发明涉及真空袋气阀技术领域，尤其涉及一种气阀。
背景技术
真空压缩袋一般设置有气阀以用于抽气或排气，公开号为CN109850356A的专利即公开了名称为“一种用于真空压缩袋的气嘴结构”的气阀，这种气阀中，采用可上下移动的气塞来将排气口打开或封闭，排气完成后，采用可上下旋动的盖体来压紧气塞以实现密封，为了便于安装盖体，需要在座体的上部设置向上凸起的圆筒结构，盖体安装在该圆筒结构上，这样的气阀存在的问题就是整体高度较大，导致装有这种气阀的真空袋折叠收纳后的厚度也较大，需要占用较大的空间，不便于运输和仓储。另外，这种气阀中，气塞上具有位于排气口中的导向柱，排气的时候气流需要从导向柱和排气口的内侧壁之间的空隙中排出，导致排气速度不理想。
发明内容
鉴于此，本发明的目的在于提供一种有利于降低整体高度、排气速度快的气阀。
本发明为解决其技术问题而采用的技术方案是：
一种气阀，包括阀座，所述阀座上设置有上下贯通穿的排气通道及用于启闭所述排气通道的上端口的阀芯，所述阀芯和排气通道之间设置有密封结构，所述阀芯可翻转开合地连接在阀座上，使得所述气阀排气时所述排气通道内的气流能够顶开阀芯，所述阀芯翻转打开的角度小于90度，使得所述气阀排气完成后所述阀芯能够自动闭合，所述阀座的下表面设置有支撑骨架。
在本发明的一种优选方案中，支撑骨架包括多根肋条，各个肋条以排气通道的轴线为中心呈辐射状分布。
在本发明的一种优选方案中，所述阀芯处于关闭状态时盖合在所述排气通道的上端口处，所述阀芯为刚性件，所述阀芯与所述阀座铰接以使所述排气通道内的气压大于所述阀芯的上表面的气压时能够驱动所述阀芯整体转动打开。
在本发明的一种优选方案中，所述阀座的上表面设置有容置槽，所述阀芯处于关闭状态时收入所述容置槽中以使所述阀芯的上表面不高于所述阀座的上表面。
在本发明的一种优选方案中，所述阀芯包括与所述容置槽相适配的转动臂、以及位于所述转动臂左部的并可盖合所述排气通道上端口的盖合部，所述枢接孔设置在所述转动臂上。
在本发明的一种优选方案中，所述容置槽的底部设置有由远离阀芯的铰接处的一端至靠近阀芯的铰接处的一端逐渐降低的斜面，所述排气通道的上端口设置在所述斜面上。
在本发明的一种优选方案中，所述阀芯连接有能够驱动其转动至关闭状态的复位弹性件。
在本发明的一种优选方案中，所述阀芯的下表面设置有位于所述枢接孔右侧的连接柱，所述容置槽的底面上设置有位于所述连接柱下方的定位孔，所述复位弹性件为一压簧，所述压簧的上端套设在所述连接柱上，所述压簧的下端插设在所述定位孔中。
在本发明的一种优选方案中，所述阀芯的右侧部所述阀座铰接，所述复位弹性件为将所述阀芯的左侧部与所述阀座连接的弹性拉力件，所述密封结构设置在所述阀芯的中部。
在本发明的一种优选方案中，所述阀芯的左侧边缘设置有第一挂钩，所述阀座上设置有第二挂钩，所述弹性拉力件为连接在第一挂钩和第二挂钩之间的弹力绳、橡皮筋或拉簧。
在本发明的一种优选方案中，所述阀芯的左侧部设置有可供人手打开所述阀芯的手抠部。
在本发明的一种优选方案中，所述排气通道的上端口处设置有从下至上逐渐扩大的锥面，所述的密封结构包括设置在所述阀芯上的并可压紧在所述锥面上的密封圈。
在本发明的一种优选方案中，所述阀芯的下表面设置有安装台，所述安装台的外侧壁上设置有环绕安装台一周的密封槽，所述密封圈套装在所述密封槽中且密封圈的外侧部凸出于所述安装台的外侧壁。
在本发明的一种优选方案中，所述阀芯和阀座之间设置有能够在所述阀芯处于关闭状态时将阀芯与阀座锁定的锁定装置。
在本发明的一种优选方案中，所述阀芯与所述阀座铰接，所述密封结构和排气通道的上端口均位于所述阀芯的转动轴线的左侧，所述阀座上设置有位于所述阀芯转动轴线的右侧的限位台，所述锁定装置包括活动设置在所述阀芯上的活动锁盖件，所述活动锁盖件由外力驱动并运动至与所述限位台抵接的位置时将所述阀芯锁定，所述活动锁盖件与所述限位台脱离时使所述阀芯解锁。
在本发明的一种优选方案中，所述活动锁盖件可左右移动地安装在所述阀芯上，所述阀芯上设置有能够给所述活动锁盖件导向的导向结构。
在本发明的一种优选方案中，所述阀芯与所述活动锁盖件之间还设置有能够在所述阀芯处于锁定状态时限制所述活动锁盖件向左移动的锁止装置。
在本发明的一种优选方案中，所述活动锁盖件为一板件，所述锁止装置包括设置于所述阀芯的上表面的第一锁止块、以及设置于所述活动锁盖件下表面的第二锁止块，所述第一锁止块的左右两侧部均为斜坡，所述第二锁止块的左右两侧部均为斜坡，所述活动锁盖件向右移动以使阀芯切换到锁定状态的过程中，所述第二锁止块越过所述第一锁止块并扣合在所述第一锁止块右侧的斜坡上。
在本发明的一种优选方案中，所述导向结构包括设置于所述阀芯上的长条孔，所述活动锁盖件上设置有穿过所述长条孔的卡扣，所述卡扣的下端具有能够限制所述卡扣向上脱出所述长条孔的扣位。
在本发明的一种优选方案中，所述阀座上设置有环绕所述排气通道的上端口布置的密封槽，所述密封结构包括设置于所述密封槽内的密封圈，所述密封圈的顶部凸出于所述密封槽的上缘以使所述阀芯能够压紧所述密封圈。
在本发明的一种优选方案中，所述排气通道的上端口处设置有向上凸起的环形气嘴，所述密封结构包括设置于所述阀芯的下表面的密封片，所述阀芯处于关闭状态时所述密封片压紧在所述环形气嘴的上端面。
在本发明的一种优选方案中，所述排气通道的上端口处设置有向上凸起的环形气嘴，所述密封结构包括一密封圈，所述密封圈的下表面具有与所述环形 气嘴配合的环形槽，所述环形气嘴卡在所述环形槽中并与所述密封圈过盈配合，所述阀芯处于关闭状态时压紧在所述密封圈的上表面。
在本发明的一种优选方案中，所述阀座上设置有环绕所述排气通道的上端口布置的密封槽，所述密封结构包括设置于所述密封槽内的密封圈，所述阀芯呈板状，所述阀芯的下表面设置有能够压紧所述密封圈的上表面的环形顶压台。
在本发明的一种优选方案中，所述阀芯通过软质的连接边与所述阀座转动连接。
本发明的有益效果是：
第一、本发明采用转动开合式的阀芯代替现有气阀中上下移动式的气塞，取消了用于压住气塞的盖体和用于安装盖体的圆筒结构，气阀的整体高度大幅降低，利于运输和仓储。
第二、本发明的气阀应用在真空袋上时，在排气状态时阀芯能够整体翻转打开，使排气通道的上端口敞开，和现有的气阀相比，排气开口更大，有利于提升排气速度。
附图说明
图1是本发明实施例1的立体图；
图2是本发明实施例1的分解图；
图3是阀芯处于关闭状态时本发明实施例1的剖视图；
图4是阀芯处于打开状态时本发明实施例1的剖视图；
图5是本发明实施例2的立体图；
图6是本发明实施例2的分解图；
图7是阀芯处于关闭状态时本发明实施例2的剖视图；
图8是阀芯处于打开状态时本发明实施例2的剖视图；
图9是本发明实施例2中活动锁盖件的立体图；
图10是阀芯处于关闭状态时本发明实施例3的剖视图；
图11是阀芯处于打开状态时本发明实施例3的剖视图；
图12是本发明实施例3的分解图；
图13是阀芯处于关闭状态时本发明实施例4的剖视图；
图14是阀芯处于关闭状态时本发明实施例5的剖视图；
图15是阀芯处于关闭状态时本发明实施例6的剖视图；
图16是阀芯处于关闭状态时本发明实施例7的剖视图；
图17是阀芯处于关闭状态时本发明实施例8的剖视图。
具体实施方式
下面将结合附图，对本发明的技术方案进行清楚、完整地描述。
需要说明，本发明中所有方向性指示(诸如上、下、左、右、前、后…)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。另外，在本发明中涉及“优选”、“次优选”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“优选”、“次优选”的特征可以明示或者隐含地包括至少一个该特征。
参照图1至17，本发明提出了一种气阀，包括阀座1，阀座1上设置有排气通道101和用于启闭排气通道101的阀芯2，阀芯2和排气通道101之间设置有密封结构，阀芯2可翻转开合地连接在阀座1上，使得气阀排气时排气通道101内的气流能够顶开阀芯2。阀芯2处于关闭状态时盖合在排气通道101的上端口处，阀座1上设置有能够在阀芯2打开时与阀芯2抵接的限位面，在限位面的限位作用下，阀芯2翻转打开的角度小于90度，使得气阀排气完成后阀芯2能够在自身重力或负压吸力的作用下自动闭合。
阀座1的下表面设置有支撑骨架102，支撑骨架102包括多根肋条，各个肋条以排气通道101的轴线为中心呈辐射状分布。支撑骨架102的设计便于将真空袋中的气体排出。
本发明采用转动开合式的阀芯2代替现有气阀中上下移动式的气塞，取消了用于压住气塞的盖体和用于安装盖体的圆筒结构，气阀的整体高度大幅降低，利于运输和仓储。本发明的气阀应用在真空袋上时，在排气状态时阀芯2能够整体翻转打开，使排气通道101的上端口敞开，和现有的气阀相比，排气开口更大，有利于提升排气速度。
进一步地，阀芯2连接有能够驱动其转动至关闭状态的复位弹性件。排气完成后，在弹性复位件的弹力作用下，能够驱动自动阀芯2复位到关闭状态。
实施例1
图1-图4示出了本发明的实施例1，本实施例中，阀芯2为刚性件，阀芯2与阀座1铰接以使排气通道101内的气压大于阀芯2的上表面的气压时能够驱动阀芯2整体转动打开。
排气通道101的上端口处设置有从下至上逐渐扩大的锥面103，密封结构包括设置在阀芯2上的并可压紧在锥面103上的密封圈4。该密封圈4可以是O形圈，也可以是其他类型的密封结构。
该密封圈4采用O形圈时，其采用以下的结构配套安装：在阀芯2的下表面设置有安装台21，安装台21的外侧壁上设置有环绕安装台21一周的密封槽22，密封圈4套装在密封槽22中且密封圈4的外侧部凸出于安装台21的外侧壁。阀芯2关闭时，密封圈4的外侧部压紧在上述的锥面103上，密封效果优异。
本实施例中，阀座1的上表面设置有容置槽107，阀芯2处于关闭状态时收入容置槽107中以使阀芯2的上表面不高于阀座1的上表面。采用这样的设计，能够有效地利用空间，使得阀芯2处于关闭状态时不凸起，可进一步降低厚度。
参照图2，阀芯2上设置有枢接孔25，容置槽107的内侧壁上设置有与枢接孔25转动配合的转轴以使阀芯2和阀座1铰接。阀芯2包括与容置槽107相适配的转动臂201、以及位于转动臂201左部的并可盖合排气通道101上端口的盖合部202，枢接孔25设置在转动臂201上。优选地，转动臂201和盖合部202为一体式的刚性结构，采用这样的设计，阀芯2转动开启时为整体转动，转动响应快。
进一步地，容置槽107的底部设置有从左至右逐渐降低的斜面104，排气通道101的上端口设置在斜面104上。
复位弹性件的设置有以下两种方案，一、复位弹性件为一压簧31，阀芯2的下表面设置有位于枢接孔25右侧的连接柱26，容置槽107的底面上设置有位于连接柱26下方的定位孔109，压簧31的上端套设在连接柱26上，压簧31的下端插设在定位孔109中，通过连接柱26和定位孔109给压簧31进行定位，可以保证使用的过程中压簧31不会脱离工作位置。二、复位弹性件采用能够驱动阀芯2转动关合的扭簧。
复位弹性件采用上述的第一种方案时，阀芯2上形成位于枢接孔25右侧的按压部以使按下按压部时可驱动阀芯2转动至打开状态。真空袋内处于负压状态时，通过按下按压部的方式将阀芯2打开，即可使外部的空气快速地进入袋体内。
本实施例的气阀在排气状态时阀芯2会翻转，此时对真空袋施加的压力或者对气阀施加的抽力越大，阀芯2张开的角度越大，排气也相对应的越快，停止排气时阀芯2在自身重力作用下、真空袋内的负压吸力作用下或复位弹性件的弹力作用下复位使得阀芯2关闭，通过阀芯2上的密封圈4与阀座1上的锥面103接触密封，密封性能优异。将排气通道101的上端口开设在上述的斜面104上，能够给阀芯2一定的避让空间，避免阀芯2尚未翻转至关闭状态时就与阀座1接触而无法准确的回位到关闭位置。
实施例2
图5-图9示出了本发明的实施例2，本实施例和实施例1具有类似的结构，其不同点在于，本实施例中还增设了能够在阀芯2处于关闭状态时将阀芯2与阀座1锁定的锁定装置。
本实施例中，阀座1上设置有位于阀芯2转动轴线的右侧的限位台106，锁定装置包括活动设置在阀芯2上的活动锁盖件5，活动锁盖件5由外力驱动并运动至与限位台106抵接的位置时将阀芯2锁定，活动锁盖件5与限位台106脱离时使阀芯2解锁。
活动锁盖件5可以设置有转动式地，也可以设置为可以左右移动式。其中以移动式的方案最佳。
活动锁盖件5采用移动式的方案时，活动锁盖件5可左右移动地安装在阀芯2上，阀芯2上设置有能够给活动锁盖件5导向的导向结构。活动锁盖件5由外力驱动并向右移动至与限位台106抵接的位置时将阀芯2锁定，活动锁盖件5向左移动至与限位台106脱离的状态时使阀芯2解锁。
进一步地，阀芯2与活动锁盖件5之间还设置有能够在阀芯2处于锁定状态时限制活动锁盖件5向左移动的锁止装置。具体地，活动锁盖件5为一硬质的塑料板件，其具有一定的弹性，锁止装置包括设置于阀芯2的上表面的第一锁止块27、以及设置于活动锁盖件5下表面的第二锁止块51，第一锁止块27 的左右两侧部均为斜坡，第二锁止块51的左右两侧部均为斜坡，活动锁盖件5向右移动以使阀芯2切换到锁定状态的过程中，第二锁止块51越过第一锁止块27并扣合在第一锁止块27右侧的斜坡上。导向结构包括设置于阀芯2上的长条孔28，活动锁盖件5上设置有穿过长条孔28的卡扣52，卡扣52的下端具有能够限制卡扣52向上脱出长条孔28的扣位53。锁止装置的作用是：在活动锁盖件5不受外力的情况下，能够使活动锁盖件5保持的将阀芯2和阀座1锁定的状态，避免气阀倾斜放置时气阀中的活动锁盖件5会在重力的作用下移动而将阀芯2和阀座1解锁。
本实施例中，阀芯2转动开合的工作原理与实施例1相同，即：本实施例的气阀在排气状态时阀芯2会翻转，此时对真空袋施加的压力或者对气阀施加的抽力越大，阀芯2张开的角度越大，排气也相对应的越快，停止排气时阀芯2在复位弹性件的弹力作用下复位使得阀芯2上的密封圈4与阀座1上的锥面103接触密封，密封性能优异。将排气通道101的上端口开设在上述的斜面104上，能够给阀芯2一定的避让空间，避免阀芯2尚未翻转至关闭状态时就与阀座1接触而无法准确的回位到关闭位置。
和实施例1相比，本实施例还具备以下优点，即在排气完成且阀芯2回位到关闭状态后，可以通过移动或转动活动锁盖件5的方式将阀芯2锁定，实现永久性密封，防止误碰而导致阀芯2失去密封效果。
在本发明的某些方案中，锁定装置还可以采用其它的结构形式，比如：采用一个销钉将阀芯2和阀座1锁定，再比如：在阀座1设置一个挂钩，同时在阀芯2上设置一根环形绳，将环形绳的自由端系紧在上述挂钩上时即可将阀芯2和阀座1锁定。
实施例3
图9-图12示出了本是发明的实施例3，本实施例中，排气通道101的上端口处设置有从下至上逐渐扩大的锥面103，密封结构包括设置在阀芯2上的并可压紧在锥面103上的密封圈4。该密封圈4可以是O形圈，也可以是其他类型的密封结构。
该密封圈4采用O形圈时，其采用以下的结构配套安装：在阀芯2的下表面设置有安装台21，安装台21的外侧壁上设置有环绕安装台21一周的密封槽 22，密封圈4套装在密封槽22中且密封圈4的外侧部凸出于安装台21的外侧壁。阀芯2关闭时，密封圈4的外侧部压紧在上述的锥面103上，密封效果优异。
本实施例中，阀座1的上表面设置有容置槽107，阀芯2处于关闭状态时收入容置槽107中以使阀芯2的上表面不高于阀座1的上表面。采用这样的设计，能够有效地利用空间，使得阀芯2处于关闭状态时不凸起，可进一步降低厚度。
阀芯2上设置有枢接孔25，容置槽107的内侧壁上设置有与枢接孔25转动配合的转轴以使阀芯2和阀座1铰接。复位弹性件为将阀芯2的左侧部与阀座1连接的弹性拉力件32，密封结构设置在阀芯2的中部。
阀芯2的左侧边缘设置有第一挂钩29，阀座1上设置有第二挂钩108，弹性拉力件32为连接在第一挂钩29和第二挂钩108之间的弹力绳、橡皮筋或拉簧。采用两个挂钩来连接弹性拉力件32，便于在弹性拉力件32失效时将其拆下更换。
进一步地，阀芯2的左侧部设置有可供人手打开阀芯2的手抠部20。便于用户打开阀芯2。
本实施例的气阀在排气状态时阀芯2会翻转，此时对真空袋施加的压力或者对气阀施加的抽力越大，阀芯2张开的角度越大，排气也相对应的越快，停止排气时阀芯2在复位弹性件的弹力作用下复位使得阀芯2上的密封圈4与阀座1上的锥面103接触密封，密封性能优异。
实施例4
图13示出了本发明的实施例4，本实施例和实施例2具有类似的结构，其不同点在于密封结构的具体形式。
本实施例中，阀座1上设置有环绕排气通道101的上端口布置的密封槽22，密封结构包括设置于密封槽22内的密封圈4，密封圈4的顶部凸出于密封槽22的上缘以使阀芯2能够压紧密封圈4。
实施例5
图14示出了本发明的实施例5，本实施例和实施例2具有类似的结构，其不同点在于密封结构的具体形式。
本实施例中，排气通道101的上端口处设置有向上凸起的环形气嘴111，密封结构包括设置于阀芯2的下表面的密封片7，阀芯2处于关闭状态时密封片7压紧在环形气嘴111的上端面。
实施例6
图15示出了本发明的实施例6，本实施例和实施例2具有类似的结构，其不同点在于密封结构的具体形式。
本实施例中，排气通道101的上端口处设置有向上凸起的环形气嘴111，密封结构包括一密封圈4，密封圈4的下表面具有与环形气嘴111配合的环形槽41，环形气嘴111卡在环形槽41中并与密封圈4过盈配合，阀芯2处于关闭状态时压紧在密封圈4的上表面。
实施例7
图16示出了本发明的实施例7，本实施例和实施例2具有类似的结构，其不同点在于密封结构的具体形式。
本实施例中，阀座1上设置有环绕排气通道101的上端口布置的密封槽22，密封结构包括设置于密封槽22内的密封圈4，阀芯2呈板状，阀芯2的下表面设置有能够压紧密封圈4的上表面的环形顶压台8。
实施例8
图17示出了本发明的实施例8，本实施例和实施例8具有类似的结构，其不同点在于阀座1和阀芯2的转动连接结构的具体形式。
本实施例中，阀芯2通过软质的连接边9与阀座1转动连接。该连接边9一般采用可以变形的塑料材质，连接边9处的厚度较薄以使其便于弯折，阀芯2转动时带动连接边9弯折变形。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接或间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (25)

  1. 一种气阀，其特征在于，包括阀座(1)，所述阀座(1)上设置有上下贯通穿的排气通道(101)及用于启闭所述排气通道(101)的上端口的阀芯(2)，所述阀芯(2)和排气通道(101)之间设置有密封结构，所述阀芯(2)可翻转开合地连接在阀座(1)上，使得所述气阀排气时所述排气通道(101)内的气流能够顶开阀芯(2)，所述气阀(1)排气完成后所述阀芯(2)能够自动闭合。
  2. 根据权利要求1所述的一种气阀，其特征在于，所述阀芯(2)处于关闭状态时盖合在所述排气通道(101)的上端口处，所述阀芯(2)为刚性件，所述阀芯(2)与所述阀座(1)铰接以使所述排气通道(101)内的气压大于所述阀芯(2)的上表面的气压时能够驱动所述阀芯(2)整体转动打开。
  3. 根据权利要求2所述的一种气阀，其特征在于，所述阀座(1)的上表面设置有容置槽(107)，所述阀芯(2)处于关闭状态时收入所述容置槽(107)中。
  4. 根据权利要求3所述的一种气阀，其特征在于，所述阀芯(2)包括与所述容置槽(107)相适配的转动臂(201)、以及位于所述转动臂(201)左部的并可盖合所述排气通道(101)上端口的盖合部(202)，所述阀芯(2)处于关闭状态时所述阀芯(2)的上表面不高于所述阀座(1)的上表面。
  5. 根据权利要求4所述的一种气阀，其特征在于，所述容置槽(107)的底部设置有由远离阀芯(2)的铰接处的一端至靠近阀芯(2)的铰接处的一端逐渐降低的斜面(104)，所述排气通道(101)的上端口设置在所述斜面(104)上。
  6. 根据权利要求1至5中任一项所述的一种气阀，其特征在于，所述阀芯(2)连接有能够驱动其转动至关闭状态的复位弹性件。
  7. 根据权利要求6所述的一种气阀，其特征在于，所述阀芯(2)的下表面设置有位于所述阀芯(2)的转动轴线右侧的连接柱(26)，所述容置槽(107)的底面上设置有位于所述连接柱(26)下方的定位孔(109)，所述复位弹性件为一压簧(31)，所述压簧(31)的上端套设在所述连接柱(26)上，所述压簧(31)的下端插设在所述定位孔(109)中。
  8. 根据权利要求6所述的一种气阀，其特征在于，所述阀芯(2)的右侧部所述阀座(1)铰接，所述复位弹性件为将所述阀芯(2)的左侧部与所述阀座(1)连接的弹性拉力件(32)，所述密封结构设置在所述阀芯(2)的中部。
  9. 根据权利要求8所述的一种气阀，其特征在于，所述阀芯(2)的左侧边缘设置有第一挂钩(29)，所述阀座(1)上设置有第二挂钩(108)，所述弹性拉力件(32)为连接在第一挂钩(29)和第二挂钩(108)之间的弹力绳、橡皮筋或拉簧。
  10. 根据权利要求8所述的一种气阀，其特征在于，所述阀芯(2)的左侧部设置有可供人手打开所述阀芯(2)的手抠部(20)。
  11. 根据权利要求2所述的一种气阀，其特征在于，所述排气通道(101)的上端口处设置有从下至上逐渐扩大的锥面(103)，所述的密封结构包括设置在所述阀芯(2)上的并可压紧在所述锥面(103)上的密封圈(4)。
  12. 根据权利要求11所述的一种气阀，其特征在于，所述阀芯(2)的下表面设置有安装台(21)，所述安装台(21)的外侧壁上设置有环绕安装台(21)一周的密封槽(22)，所述密封圈(4)套装在所述密封槽(22)中且密封圈(4)的外侧部凸出于所述安装台(21)的外侧壁。
  13. 根据权利要求1或2所述的一种气阀，其特征在于，所述阀芯(2)和阀座(1)之间设置有能够在所述阀芯(2)处于关闭状态时将阀芯(2)与阀座(1)锁定的锁定装置。
  14. 根据权利要求13所述的一种气阀，其特征在于，所述阀芯(2)与所述阀座(1)铰接，所述密封结构和排气通道(101)的上端口均位于所述阀芯(2)的转动轴线的左侧，所述阀座(1)上设置有位于所述阀芯(2)转动轴线的右侧的限位台(106)，所述锁定装置包括活动设置在所述阀芯(2)上的活动锁盖件(5)，所述活动锁盖件(5)由外力驱动并运动至与所述限位台(106)抵接的位置时将所述阀芯(2)锁定，所述活动锁盖件(5)与所述限位台(106)脱离时使所述阀芯(2)解锁。
  15. 根据权利要求14所述的一种气阀，其特征在于，所述活动锁盖件(5)可左右移动地安装在所述阀芯(2)上，所述阀芯(2)上设置有能够给所述活动锁盖件(5)导向的导向结构。
  16. 根据权利要求15所述的一种气阀，其特征在于，所述阀芯(2)与所述活动锁盖件(5)之间还设置有能够在所述阀芯(2)处于锁定状态时限制所述活动锁盖件(5)向左移动的锁止装置。
  17. 根据权利要求16所述的一种气阀，其特征在于，所述活动锁盖件(5)为一板件，所述锁止装置包括设置于所述阀芯(2)的上表面的第一锁止块(27)、 以及设置于所述活动锁盖件(5)下表面的第二锁止块(51)，所述第一锁止块(27)的左右两侧部均为斜坡，所述第二锁止块(51)的左右两侧部均为斜坡，所述活动锁盖件(5)向右移动以使阀芯(2)切换到锁定状态的过程中，所述第二锁止块(51)越过所述第一锁止块(27)并扣合在所述第一锁止块(27)右侧的斜坡上。
  18. 根据权利要求15所述的一种气阀，其特征在于，所述导向结构包括设置于所述阀芯(2)上的长条孔(28)，所述活动锁盖件(5)上设置有穿过所述长条孔(28)的卡扣(52)，所述卡扣(52)的下端具有能够限制所述卡扣(52)向上脱出所述长条孔(28)的扣位(53)。
  19. 根据权利要求1或2所述的一种气阀，其特征在于，所述阀座(1)上设置有环绕所述排气通道(101)的上端口布置的密封槽(22)，所述密封结构包括设置于所述密封槽(22)内的密封圈(4)，所述密封圈(4)的顶部凸出于所述密封槽(22)的上缘以使所述阀芯(2)能够压紧所述密封圈(4)。
  20. 根据权利要求1或2所述的一种气阀，其特征在于，所述排气通道(101)的上端口处设置有向上凸起的环形气嘴(111)，所述密封结构包括设置于所述阀芯(2)的下表面的密封片(7)，所述阀芯(2)处于关闭状态时所述密封片(7)压紧在所述环形气嘴(111)的上端面。
  21. 根据权利要求1或2所述的一种气阀，其特征在于，所述排气通道(101)的上端口处设置有向上凸起的环形气嘴(111)，所述密封结构包括一密封圈(4)，所述密封圈(4)的下表面具有与所述环形气嘴(111)配合的环形槽(41)，所述环形气嘴(111)卡在所述环形槽(41)中并与所述密封圈(4)过盈配合，所述阀芯(2)处于关闭状态时压紧在所述密封圈(4)的上表面。
  22. 根据权利要求1或2所述的一种气阀，其特征在于，所述阀座(1)上设置有环绕所述排气通道(101)的上端口布置的密封槽(22)，所述密封结构包括设置于所述密封槽(22)内的密封圈(4)，所述阀芯(2)呈板状，所述阀芯(2)的下表面设置有能够压紧所述密封圈(4)的上表面的环形顶压台(8)。
  23. 根据权利要求1所述的一种气阀，其特征在于，所述阀芯(2)通过软质的连接边(9)与所述阀座(1)转动连接。
  24. 根据权利要求1所述的一种气阀，其特征在于，所述阀座(1)的下表面设置有支撑骨架(102)，支撑骨架(102)包括多根肋条，各个肋条以排气通道(101)的轴线为中心呈辐射状分布。
  25. 根据权利要求1所述的一种气阀，其特征在于，所述阀芯(2)翻转打开的角度小于90度。
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