Exhaust assembly, bottle cap and packaging container

Abstract

The utility model discloses an exhaust assembly, bottle cap and packaging container, including end cap and buckle on the exhaust seat on the end cap, the end cap includes the chassis and the sleeve vertically arranged on the chassis, the chassis is provided with a plurality of ventilation grooves close to the inner edge direction of the sleeve, the exhaust seat includes the exhaust ring, and the exhaust ring is provided with a plurality of ventilation holes. A breathable film is arranged in the hollow area of the exhaust ring, a plurality of check blocks are arranged at the bottom of the exhaust ring continuously or at intervals, the breathable groove is located between the sleeve and the check blocks, the breathable film is located in the space defined by the check blocks, the breathable groove is communicated with the breathable film, and the bottom end of the exhaust ring is buckled to the top end of the sleeve. According to the exhaust assembly, the check block is arranged at the bottom end of the exhaust ring, the ventilation groove is formed in the base plate and located between the sleeve and the check block, the check block can be effectively prevented from blocking the ventilation groove, normal exhaust of the ventilation groove is guaranteed, and use safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of packaging material, especially to an exhaust assembly, a bottle cap and a packaging container. BACKGROUND

[0002] When a liquid product is contained in a packaging bottle or a packaging bag, the opening position usually needs to be sealed. However, during long-term storage or transportation, substances may volatilize or produce gas. If the gas is not promptly discharged and accumulates to a certain extent, it may pose an explosion risk.

[0003] Application No. 202310062477.1 discloses a breathable gasket. When in use, the breathable gasket is placed on the top of the bottle cap, and a breathable hole is provided at the upper central part of the bottle cap. After the bottle cap and the bottle body are connected, the breathable gasket is compressed by the upper part of the bottle body and the bottle cap, and the gas in the bottle body can be discharged through the polytetrafluoroethylene sheet to achieve the effect of breathability. However, since the polytetrafluoroethylene sheet is not protected or shielded, it is completely exposed to the inside of the bottle body. When the liquid inside the bottle body shakes, it may splash into the polytetrafluoroethylene sheet, affecting the normal breathability of the polytetrafluoroethylene sheet.

[0004] Application No. 202022786920.4 discloses a breathable plug, which includes a sleeve seat and a breathable plug. The sleeve seat includes a cylindrical outer wall and a top cover on the outer wall, and a breathable hole is provided on the top cover. The breathable plug includes a ring body, a plurality of evenly distributed outer clamping strips are provided on the outer wall of the ring body, a first inner ring cavity and a second inner ring cavity are provided in the ring body, a support is provided in the first inner ring cavity, a silica gel sheet is installed on the support, a cover plate is installed on the second inner ring cavity, and a breathable film is installed on the cover plate. In use, the outer clamping strips on the outside of the breathable plug are clamped onto the inner wall of the sleeve seat, the breathable plug is connected with the bottle cap by screwing or interference fit, and then it is covered above the bottle body to complete the installation process. Since the breathable hole is provided at the edge of the sleeve seat and the breathable film is provided at the middle position of the ring body, the position difference between the two can protect the breathable film to some extent. However, after the outer clamping strips are clamped with the sleeve seat, they may move. When the outer clamping strips move to the position of the breathable hole, they may partially or completely cover the breathable hole, affecting normal breathability.

[0005] The application number 201922084007.7 discloses a gas vent valve liquid barrier, which comprises a shell inserted on a gas vent valve, a through gas flow channel is arranged on the shell, a soft liquid barrier diaphragm is arranged in the gas flow channel, the liquid barrier diaphragm has a cross-shaped opening, and the cross-shaped opening tends to be naturally closed. The gas vent valve is usually arranged on the upper surface of a packaging barrel, the shell is inserted on the lower end of the gas vent valve, and the liquid barrier diaphragm is located between the first shell and the second shell. When the packaging barrel is tilted or shaken to cause liquid to reach the gas vent valve, the liquid passes through the cross-shaped grid into the second shell and contacts the liquid barrier diaphragm. Since the liquid barrier diaphragm is made of silica gel, the cross-shaped opening is naturally closed, so the liquid cannot easily pass through the liquid barrier diaphragm, which is similar to a baby bottle nipple, thereby avoiding the contact between the liquid and the gas permeable film in the gas vent valve, avoiding the pollution of the gas permeable film, and being beneficial to the normal gas permeation function of the gas permeable film. When the packaging barrel is in a normal upright state, as the gas in the packaging barrel increases and the pressure rises, the gas can open the cross-shaped opening of the liquid barrier diaphragm and be discharged out of the barrel through the gas vent valve. However, after long-term use, the liquid barrier diaphragm is directly exposed to the liquid, the liquid is adsorbed on the surface of the silica gel sheet after splashing, which affects the normal opening and closing of the silica gel sheet, and may cause exhaust obstruction.

[0006] At present, there is no exhaust plug on the market that can realize normal exhaust of the gas permeable film, prevent liquid from splashing on the gas permeable film, and prolong the service life of the gas permeable film. Practical new type content

[0007] In order to solve the problems existing in the prior art, the utility model provides an exhaust assembly, a stop block is arranged at the bottom end of the exhaust ring, the gas permeable film is surrounded in the space where the stop block is located, so as to protect the gas permeable film, a gas permeation groove is arranged on the bottom disc, and the position of the gas permeation groove is limited between the sleeve and the stop block. The gas permeation groove can avoid being blocked by the stop block and ensure normal exhaust, and the liquid splashed through the gas permeation groove cannot directly enter the gas permeable film, so as to avoid the adsorption of the splashed liquid on the gas permeable film and affect the service life of the gas permeable film. In addition, the utility model also provides a bottle cap and a packaging container comprising the exhaust assembly.

[0008] The first aspect of the utility model provides an exhaust assembly, which comprises an end cover and an exhaust seat buckled on the end cover, the end cover comprises a bottom disc and a sleeve vertically arranged on the bottom disc, a plurality of gas permeation grooves are arranged on the inner edge of the sleeve,

[0009] The exhaust seat comprises an exhaust ring, a gas permeable film is arranged in the hollow area of the exhaust ring, a plurality of stop blocks are continuously or intermittently arranged at the bottom of the exhaust ring, the gas permeation groove is located between the sleeve and the stop block, the gas permeable film is located in the space surrounded by the stop block, the gas permeation groove is in communication with the gas permeable film, and the bottom end of the exhaust ring is buckled on the top end of the sleeve.

[0010] As a preferred embodiment, the sleeve is vertically arranged along the edge of the base plate.

[0011] As another preferred embodiment, the exhaust ring is provided with a plurality of positioning grooves along the circumferential direction, and the sleeve is provided with a plurality of protrusions at corresponding positions of the positioning grooves, the positioning grooves and the protrusions being buckledly connected.

[0012] As a more preferred embodiment, the positioning grooves and the protrusions are interference-fitted.

[0013] As a more preferred embodiment, the bottom end of the protrusion extends towards the center of the sleeve to form an extending end, and the bottom end of the positioning groove is provided with a connecting piece matched with the extending end, the extending end being clamped on the connecting piece.

[0014] As a preferred embodiment, the connecting piece is a connecting bridge provided at the bottom end of the positioning groove, and the extending end is clamped on the connecting bridge.

[0015] As a more preferred embodiment, the exhaust seat is provided with a first guide column at the bottom end of the connecting bridge, the side of the first guide column away from the center of the exhaust seat being a first guide surface, and the extending end is clamped on the connecting bridge along the first guide surface.

[0016] As a more preferred embodiment, the projection of the first guide surface on the base plate is located in the positioning groove.

[0017] As a more preferred embodiment, the connecting piece is a second guide column provided at the bottom end of the positioning groove, the side of the second guide column away from the center of the exhaust seat being a second guide surface, and the extending end is clamped on the upper end surface of the second guide column.

[0018] As a preferred embodiment, the sleeve is provided with a plurality of groove bodies along the circumferential direction, and the exhaust ring is provided with a plurality of positioning blocks at corresponding positions of the groove bodies, the groove bodies and the positioning blocks being buckledly connected.

[0019] As a more preferred embodiment, the groove bodies and the positioning blocks are interference-fitted.

[0020] As a more preferred embodiment, the bottom part of the exhaust ring is provided with a plurality of stop blocks.

[0021] As a preferred embodiment, a first gap is left between the bottom end of the stop block and the base plate, and the height of the first gap is 0-10 mm.

[0022] As a more preferred embodiment, the height of the first gap is 0-3 mm.

[0023] As a preferred embodiment, the bottom end of the stop block is located on the base plate.

[0024] As a preferred embodiment, the bottom of the exhaust ring is continuously provided with a plurality of blocks, and a second gap is left between the bottom end of the block and the bottom disc, and the height of the second gap is 1-10mm.

[0025] As a more preferred embodiment, the height of the second gap is 1-3mm.

[0026] As a preferred embodiment, the exhaust ring is provided with an exhaust groove at the corresponding position of the air permeable groove, and the exhaust groove and the air permeable groove are mutually penetrated.

[0027] As a preferred embodiment, the bottom disc is in a structure of low outer edge and high middle.

[0028] As a preferred embodiment, the upper end of the exhaust ring is provided with an exhaust ring connecting ring for connecting with the cover of the packaging container.

[0029] The second aspect of the utility model provides a bottle cap, including cover, the cover is provided with air hole, the bottom end of cover is provided with above-mentioned exhaust assembly, the exhaust ring of exhaust assembly is connected with air hole.

[0030] As a preferred embodiment, the bottom end of the cover is provided with a cover connecting ring, and the upper end of the exhaust ring is provided with an exhaust ring connecting ring, which is interference fit or screw connection with the cover connecting ring.

[0031] The third aspect of the utility model provides a packaging container, including above-mentioned exhaust assembly, the exhaust ring of exhaust assembly is connected with the air hole of packaging container.

[0032] The fourth aspect of the utility model provides a packaging container, including above-mentioned bottle cap, and the bottle cap is arranged on the bottle mouth position of the packaging container.

[0033] As a preferred embodiment, the packaging container is a packaging barrel, a packaging bottle or a packaging bag.

[0034] Beneficial effects:

[0035] (1) the exhaust assembly of the utility model, the block is arranged at the bottom end of the exhaust ring, the air permeable groove is arranged on the bottom disc, the air permeable groove is located between the sleeve and the block, the block can effectively avoid the shielding of the air permeable groove, guarantee the normal exhaust of the air permeable groove, and improve the safety of use.

[0036] (2) the exhaust assembly of the utility model, the air permeable membrane is arranged in the space surrounded by the block, and the block has a protective effect on the air permeable membrane, prevents liquid entering through the air permeable groove from splashing into the air permeable membrane, avoids liquid adsorption on the air permeable membrane, affects the normal use of the air permeable membrane, and prolongs the service life of the air permeable membrane.

[0037] (3) The exhaust assembly of the utility model, through the bottom end of the exhaust ring is buckled in the top end of the sleeve, the installation of the end cover and the exhaust seat is completed, it is convenient, fast, and it is convenient for extensive promotion.

[0038] (4) The exhaust assembly of the utility model, the injection mold does not need to adopt the slide block design, and the structure is simple, and it is convenient for processing, in addition, the exhaust assembly of the utility model is convenient for distinguishing the installation direction when being automatically assembled, and the influence of improper installation on the ventilation effect is overcome.

[0039] The concept, specific structure and generated technical effect of the utility model will be further described below in combination with the drawings, so as to fully understand the purpose, characteristics and effect of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the drawings needed to be used in the embodiment or the prior art description will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0041] Figure 1 It is the structural schematic view of the exhaust assembly in the embodiment 1 of the utility model;

[0042] Figure 2 It is the structural schematic view of the end cover in the embodiment 1 of the utility model;

[0043] Figure 3 It is the structural schematic view of the exhaust seat in the embodiment 1 of the utility model;

[0044] Figure 4 It is the structural schematic view of the exhaust seat in the embodiment 1 of the utility model in another direction;

[0045] Figure 5 It is the structural schematic view of the exhaust seat in the embodiment 2 of the utility model;

[0046] Figure 6 It is the structural schematic view of the end cover in the embodiment 3 of the utility model;

[0047] Figure 7 It is the structural schematic view of the exhaust seat in the embodiment 3 of the utility model;

[0048] Figure 8 It is the structural schematic view of the end cover in the embodiment 4 of the utility model;

[0049] Figure 9 It is the structural schematic view of the exhaust assembly in the embodiment 4 of the utility model;

[0050] Figure 10 is a structural schematic view of the exhaust seat in the embodiment 5 of the utility model;

[0051] Figure 11 is another direction structural schematic view of the exhaust seat in the embodiment 5 of the utility model;

[0052] Figure 12 is a structural schematic view of the bottle cap in the embodiment 6 of the utility model;

[0053] Figure 13 is a structural schematic view of the packaging barrel in the embodiment 7 of the utility model.

[0054] Wherein: 1 - end cover, 2 - exhaust seat, 3 - bottom disc, 4 - vent groove, 5 - sleeve, 6 - exhaust ring, 7 - stop block, 8 - positioning groove, 9 - boss, 10 - exhaust groove, 11 - exhaust ring connecting ring, 12 - bottle cap, 13 - packaging barrel, 14 - extension end, 15 - connecting bridge, 16 - first guide column, 17 - first guide surface, 18 - groove body, 19 - positioning block. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the utility model.

[0056] The terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0057] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] If an element is referred to as being "on" or "connected" to another element, it can be directly on or connected to the other element or intervening elements can be present. In the description of the disclosure, the terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions are used for the purpose of explanation only and are not intended to be limiting.

[0059] When a liquid is stored in a packaging bottle or a packaging bag, the liquid may volatilize or the gas dissolved in the liquid may escape, causing the pressure in the packaging bottle or the packaging bag to increase. If the pressure is not released in time, the packaging bottle or the packaging bag may burst, which is a safety hazard.

[0060] Some manufacturers consider installing a gas permeable valve on the packaging bottle or the packaging bag, which includes a valve body and a gas permeable membrane. The gas in the packaging bottle or the packaging bag is discharged through the gas permeable membrane, or a gas permeable gasket is installed on the bottle cap. However, in actual application, it is found that when the packaging bottle or the packaging bag is shaken or tilted during transportation, the liquid in the packaging bottle or the packaging bag adheres to the gas permeable membrane or the gas permeable gasket, causing the gas permeability of the gas permeable membrane or the gas permeable gasket to decrease significantly, and the gas cannot be discharged smoothly.

[0061] The authorized announcement No. CN 210950081U discloses a gas permeable valve liquid barrier. A soft liquid barrier diaphragm is installed in the gas flow channel to block the liquid from entering the gas permeable membrane to protect the gas permeable membrane. However, after long-term use, part of the liquid may adhere to the liquid barrier diaphragm, affecting the normal opening and closing of the liquid barrier diaphragm, so that the gas in the packaging barrel cannot be discharged normally, and the barrel may be inflated.

[0062] The authorized announcement No. CN213975229U discloses a gas permeable plug. An outer clamping strip is provided on the ring body of the gas permeable plug, which protrudes from the edge of the ring body. The outer clamping strip is clamped in the outer sleeve seat. The gas permeates through the gas permeable hole in the outer sleeve seat, enters the gas permeable membrane, and is then discharged from the packaging container. Since the gas permeable hole is provided at the edge of the outer sleeve seat and the gas permeable membrane is provided at the middle position of the ring body, the position difference between the two can protect the gas permeable membrane to some extent. However, the outer clamping strip clamped in the outer sleeve seat may shift or slide during use, which may block the gas permeable hole. In addition, when installing the outer clamping strip, in order to avoid blocking the gas permeable hole, manual fine calibration work is required, which affects the work efficiency.

[0063] The utility model provides a kind of exhaust assembly, including end cover 1 and buckle on the exhaust seat 2 of end cover 1, end cover 1 includes bottom disc 3 and sleeve 5 vertically arranged on bottom disc 3, and bottom disc 3 is close to the inner edge direction of sleeve 5 and is provided with multiple air grooves 4.The shape of bottom disc 3 is not limited, can be circular, oval, square or other shapes.Sleeve 5 is located on bottom disc 3, and the bottom area of sleeve 5 can be equivalent to bottom disc 3, at this time, sleeve 5 is arranged in the circumferential direction of bottom disc 3, and sleeve 5 is vertically arranged along the edge of bottom disc 3;The bottom area of sleeve 5 can also be less than bottom disc 3, and there is a certain distance between sleeve 5 and the outer edge of bottom disc 3.Air groove 4 is arranged in the inner edge direction of sleeve 5, i.e.

[0064] Exhaust seat 2 includes exhaust ring 6, and the hollow area of exhaust ring 6 is provided with air permeable membrane, and before installing air permeable membrane, support frame can be arranged in the hollow area of exhaust ring 6, which is a cross support frame or a plurality of concentric circle interval support frames, to support air permeable membrane and improve the strength and installation convenience of air permeable membrane.The bottom (the side close to end cover 1) of exhaust ring 6 is continuously or interval provided with a plurality of stoppers 7, air groove 4 is located between sleeve 5 and stopper 7, air permeable membrane is located in the space surrounded by stopper 7, air groove 4 is communicated with air permeable membrane, and the bottom end of exhaust ring 6 is buckled on the top end of sleeve 5.Air groove 4 is arranged between sleeve 5 and stopper 7, and air permeable membrane is arranged in the space surrounded by stopper 7, so that the liquid splashed by air groove 4 is blocked by stopper 7 and cannot easily enter air permeable membrane, avoiding the adsorption of liquid on air permeable membrane and affecting service life.The bottom end of exhaust ring 6 is buckled on the top end of sleeve 5, realizing the combined installation of exhaust assembly, and at the same time, air groove 4 is not blocked, ensuring the normal exhaust function of air groove 4.

[0065] Exhaust ring 6 is provided with a plurality of positioning grooves 8 along the circumference direction, sleeve 5 is provided with a plurality of bosses 9 at the corresponding position of positioning groove 8, and positioning groove 8 and boss 9 are buckled connection.Positioning groove 8 and boss 9 adopt interference fit mode, boss 9 is engaged in positioning groove 8, realizing the close connection of exhaust ring 6 and end cover 1.

[0066] In addition to the above manner, the boss 9 can also be provided with a structure of being narrow at the top and wide at the bottom, the bottom end of the boss 9 extends towards the center of the sleeve 5 to form an extending end 14, the extending end 14 is an arc curved surface, a trapezoidal plane or other similar shape extending from the top end of the sleeve 5, the bottom end of the positioning groove 8 is provided with a connecting piece, and the connecting piece here is a connecting bridge 15 with a certain width, and the extending end 14 is clamped on the connecting bridge 15. The connecting bridge 15 is matched with the shape of the extending end 14, so that when the end cover 1 is connected with the exhaust seat 2, the extending end 14 is clamped on the connecting bridge 15. The connecting bridge 15 and the positioning groove 8 can be integrally formed, and a certain allowance is provided at the bottom end of the positioning groove 8 during injection molding to obtain the connecting bridge 15, or the connecting bridge 15 can be separately installed at the bottom end of the positioning groove 8.

[0067] In order to facilitate the installation of the exhaust assembly, a first guide column 16 is arranged at the bottom end of the positioning groove 8, and the side face of the first guide column 16 away from the center of the exhaust seat 2 is a first guide face 17. The end cover 1 and the exhaust ring 6 gradually approach each other, the boss 9 enters the connecting bridge 15 along the direction of the first guide face 17 until it is clamped on the connecting bridge 15, and the installation of the exhaust assembly is completed. The outer diameter of the first guide face 17 is greater than the outer diameter of the connecting bridge 15 but less than the outer diameter of the positioning groove 8, otherwise the normal guiding effect will be affected, and even the installation of the end cover 1 and the exhaust ring 6 cannot be completed.

[0068] In addition to the connecting bridge 15, the connecting piece can also be a second guide column arranged at the bottom end of the positioning groove 8, the side face of the second guide column away from the center of the exhaust seat 2 is a second guide face, and the extending end 14 is clamped on the upper end face of the second guide column. The connecting piece can be provided in combination of the above two manners, and those skilled in the art can select as required.

[0069] Of course, the positions of the boss 9 and the positioning groove 8 can also be exchanged, and the sleeve 5 is provided with a plurality of groove bodies 18 along the circumferential direction, and a plurality of positioning blocks 19 are arranged at the corresponding positions of the exhaust ring 6 in the groove bodies 18, the groove bodies 18 and the positioning blocks 19 are buckled and connected, and the commonly used buckling manner is interference fit.

[0070] The bottom of the exhaust ring 6 is provided with a plurality of blocks 7, and a first gap is left between the bottom end of the block 7 and the bottom disc 3. The height of the first gap is 0-10mm, preferably 0-3mm, and more preferably the block 7 directly abuts on the bottom disc 3. Because the space surrounded by the block 7 is provided with a breathable film, the block 7 abuts on the bottom disc 3, and the liquid discharged through the breathable groove 4 will not further overflow in the direction of the exhaust ring 6 due to the block of the block 7. In addition, the gas discharged from the breathable groove 4 enters the breathable film through the gap between the block 7 and the block 7, and then is discharged to the outside environment, thereby realizing the exhaust effect. Of course, the block 7 can also be not directly abutting on the bottom disc 3, but leaving a certain gap, and the gas can enter the breathable film through the space between the gap and the block 7, thereby realizing the exhaust effect. At the same time, because a small gap is left, the problem of liquid splashing the breathable film can also be avoided.

[0071] The bottom of the exhaust ring 6 is continuously provided with a plurality of blocks 7, and the block 7 is provided as a whole (such as a ring-shaped block) at the bottom of the exhaust ring 6. The breathable film is located in the block 7, and the block 7 protects the breathable film. At this time, the block 7 is not directly abutting on the bottom disc 3, otherwise the exhaust cannot be normally performed. A second gap is left between the block 7 and the bottom disc 3, and the height of the second gap is 1-10mm, preferably 1-3mm.

[0072] The exhaust ring 6 is provided with a plurality of exhaust grooves 10 at the corresponding position of the breathable groove 4, and the exhaust groove 10 and the breathable groove 4 are mutually penetrated.

[0073] The bottom disc 3 has a structure of low outer edge and high middle. The whole bottom disc 3 has an upward convex structure, and the liquid discharged from the breathable groove 4 enters the bottom disc 3 and then flows out through the breathable groove 4, thereby avoiding the accumulation of liquid on the bottom disc 3.

[0074] The upper end of the exhaust ring 6 is provided with an exhaust ring connecting ring 11 for connecting with the cover of the packaging container. The exhaust ring connecting ring 11 is provided to realize the connection between the exhaust assembly and the packaging container. In the prior art, a cover connecting ring is usually provided at the lower end of the cover of the packaging container, and the cover connecting ring is matched with the exhaust ring connecting ring 11. The two can be connected in an interference fit manner, so that the exhaust ring connecting ring 11 is buckled on the cover connecting ring, or the cover connecting ring is buckled on the exhaust ring connecting ring 11. Alternatively, the cover connecting ring and the exhaust ring connecting ring 11 can be connected in a threaded connection manner. The cover connecting ring is provided with external threads, and the exhaust ring connecting ring 11 is provided with matching internal threads, or the cover connecting ring is provided with internal threads, and the exhaust ring connecting ring 11 is provided with matching external threads.

[0075] The utility model discloses still provide a kind of bottle cap, including cover, and the vent hole is arranged on cover, and the bottom end of cover is provided with above-mentioned exhaust component, and the exhaust ring 6 of exhaust component is connected with vent hole through.

[0076] The utility model discloses still provide a kind of packing container, including above-mentioned exhaust component, and the exhaust ring 6 of exhaust component is connected with the vent hole of packing container through.

[0077] The utility model discloses still provide a kind of packing container, including above-mentioned bottle cap, and bottle cap cover is located at the bottle mouth position of packing container.Here packing container can be packing barrel, packing bottle or packing bag.

[0078] Example 1

[0079] As Figures 1-4 An exhaust component, including end cover 1 and the exhaust seat 2 buckled on end cover 1, end cover 1 includes bottom disc 3 and the sleeve 5 vertically arranged along the edge of bottom disc 3, and the circumferential direction of bottom disc 3 is provided with four vent grooves 4, and the top of sleeve 5 is provided with four bosses 9, and the boss 9 is narrow in upper and wide in lower structure, and the bottom end of boss 9 extends to the central area of sleeve 5, and forms the extended end 14.Of course, the structure of boss 9 is not necessarily narrow in upper and wide in lower structure, and the bottom end of boss 9 can form extended end 14.

[0080] Exhaust seat 2 includes exhaust ring 6, and the hollow area of exhaust ring 6 is provided with venting membrane, and the bottom of exhaust ring 6 is provided with four stoppers 7, when exhaust seat 2 is connected with end cover 1, vent groove 4 is located between sleeve 5 and stopper 7, venting membrane is located in the space surrounded by stopper 7, and stopper 7 is located on bottom disc 3, and the space between stopper 7 is the channel for gas flow.The circumferential direction of exhaust ring 6 is provided with four positioning grooves 8 matched with boss 9, and the bottom of positioning groove 8 is provided with connecting bridge 15.Connecting bridge 15 has the width matched with extended end 14, facilitating the buckling connection of the two.The exhaust component is usually a plastic part, which makes the installation of extended end 14 and connecting bridge 15 more convenient.

[0081] In order to increase the convenience of installation, first guide column 16 is arranged at the bottom of positioning groove 8 of exhaust seat 2, and the outer edge size of connecting bridge 15 is less than the outer edge size of first guide column 16 (i.e., the projection position of first guide column 16 on end cover 1 is between connecting bridge 15 and the outer edge of positioning groove 8), and the side of first guide column 16 away from the center of exhaust seat 2 is first guide surface 17, and boss 9 enters positioning groove 8 along first guide surface 17, which can realize rapid installation.

[0082] The upper end of the exhaust ring 6 is provided with an exhaust ring connecting ring 11 for connecting with the cover of the packaging container.

[0083] In use, the position of the positioning groove 8 of the exhaust ring 6 corresponds to the position of the boss 9, the exhaust ring 6 is moved downward until the positioning groove 8 of the exhaust ring 6 is close to the boss 9, and the exhaust ring 6 is pressed downward so that the bottom end of the positioning groove 8 of the exhaust ring 6 abuts against the bottom end of the boss 9, that is, the protruding end 14 is clamped on the connecting bridge 15, and the installation of the exhaust assembly is completed. When the exhaust assembly is applied to a specific scene, when the volatile gas in the environment enters the bottom disc 3 from the air permeable groove 4 of the exhaust assembly, the gas will further rise to the space between the baffle 7 and the bottom disc 3, and then be discharged through the air permeable membrane. In addition, when the liquid in the environment enters the end cover 1 from the air permeable groove 4, the liquid is difficult to enter the exhaust seat 2 due to the blocking of the baffle 7, thereby protecting the air permeable membrane in the exhaust seat 2.

[0084] Embodiment 2

[0085] Different from embodiment 1, the bottom of the exhaust ring 6 is provided with a ring-shaped baffle 7 instead of a plurality of baffles arranged at intervals to form a ring-shaped structure.

[0086] An exhaust assembly includes an end cover 1 and an exhaust seat 2 buckled on the end cover 1, the end cover 1 includes a planar bottom disc 3 and a sleeve 5 vertically arranged along the edge of the bottom disc 3, the bottom disc 3 is provided with four air permeable grooves 4 in the circumferential direction, the top end of the sleeve 5 is provided with four bosses 9, the bosses 9 have a structure of being narrow at the top and wide at the bottom, the bottom end of the boss 9 protrudes to the center area of the sleeve 5 to form a protruding end 14.

[0087] As Figure 5 , the exhaust seat 2 includes an exhaust ring 6, the hollow area of the exhaust ring 6 is provided with an air permeable membrane, the bottom of the exhaust ring 6 is provided with a ring-shaped baffle 7, the air permeable membrane is located in the space surrounded by the baffle 7, when the exhaust seat 2 is connected with the end cover 1, the air permeable groove 4 is located between the sleeve 5 and the baffle 7, there is a gap between the bottom end of the baffle 7 and the bottom disc 3, according to actual needs, the height of the gap is set to 1-10mm, the space between the baffle 7 and the bottom disc 3 is a channel for gas flow. The exhaust ring 6 is provided with four positioning grooves 8 in the circumferential direction, the bottom end of the positioning groove 8 is provided with a connecting bridge 15, and the bottom end (protruding end 14) of the boss 9 is clamped on the connecting bridge 15.

[0088] When the volatile gas in the environment enters the bottom disc 3 from the air permeable groove 4 of the exhaust assembly, the gas will further rise to the gap between the baffle 7 and the bottom disc 3, and then be discharged through the air permeable membrane, thereby achieving the exhaust effect.

[0089] Embodiment 3

[0090] As Figure 6 and 7Different from the embodiment 1, the sleeve 5 is provided with a plurality of slots 18 along the circumferential direction, and the exhaust ring 6 is provided with a plurality of positioning blocks 19 at the corresponding positions of the slots 18, the slots 18 and the positioning blocks 19 are buckled to complete the installation of the end cover 1 and the exhaust seat 2.

[0091] Embodiment 4

[0092] As Figure 8 , 9 Different from the embodiment 1, the bottom plate 3 is provided with a structure of low outer edge and high middle, so that the air permeable groove 4 is located at the bottom end, when liquid enters the bottom plate 3 from the air permeable groove 4, due to the special structure of the bottom plate 3, the liquid accumulation problem does not occur.

[0093] Embodiment 5

[0094] As Figure 10 and 11 Different from the embodiment 1, the exhaust ring 6 is provided with four exhaust grooves 10 at the corresponding positions of the air permeable groove 4, and the exhaust grooves 10 and the air permeable groove 4 are mutually penetrated.

[0095] Embodiment 6

[0096] As Figure 12 A bottle cap, comprising a cap body, the cap body is provided with an air permeable hole, the bottom end of the cap body is provided with a cap body connecting ring, the bottom end of the cap body is provided with the exhaust assembly of the embodiment 1, the upper end of the exhaust ring 6 is provided with an exhaust ring connecting ring 11, and the cap body connecting ring and the exhaust ring connecting ring 11 are in interference fit or threaded connection.

[0097] Embodiment 7

[0098] As Figure 13 A packaging barrel, comprising the bottle cap 12 in the embodiment 6, the bottle cap 12 is covered on the bottle opening position of the packaging barrel 13.

[0099] The technical features of the above embodiments can be combined arbitrarily, in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered that it is within the scope of the description.

[0100] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model.

Claims

1. An exhaust assembly characterized by, The exhaust seat (2) is provided with a plurality of positioning grooves (8) along the circumferential direction, and the sleeve (5) is provided with a plurality of bosses (9) at positions corresponding to the positioning grooves (8). The positioning groove (8) and the boss (9) are in interference fit.

2. The exhaust assembly of claim 1, wherein, The bottom end of the boss (9) extends to the center of the sleeve (5) to form an extension end (14), and the bottom end of the positioning groove (8) is provided with a connecting piece matched with the extension end (14), and the extension end (14) is clamped on the connecting piece.

3. The exhaust assembly of claim 2, wherein, The connecting piece is a connecting bridge (15) provided at the bottom end of the positioning groove (8), and the extension end (14) is clamped on the connecting bridge (15).

4. The exhaust assembly of claim 2, wherein, The exhaust seat (2) is provided with a first guide column (16) at the bottom end of the connecting bridge (15), and the side surface of the first guide column (16) away from the center of the exhaust seat (2) is a first guide surface (17), and the extension end (14) is clamped on the connecting bridge (15) along the first guide surface (17).

5. The exhaust assembly of claim 4, wherein, The projection of the first guide surface (17) on the bottom disc (3) is located in the positioning groove (8).

6. The exhaust assembly of claim 5, wherein, The connecting piece is a second guide column provided at the bottom end of the positioning groove (8), and the side surface of the second guide column away from the center of the exhaust seat (2) is a second guide surface, and the extension end (14) is clamped on the upper end surface of the second guide column.

7. The exhaust assembly of claim 6, wherein, The sleeve (5) is provided with a plurality of groove bodies (18) along the circumferential direction, and the exhaust ring (6) is provided with a plurality of positioning blocks (19) at positions corresponding to the groove bodies (18).

8. The exhaust assembly of claim 4, wherein, The groove body (18) and the positioning block (19) are in interference fit.

9. The exhaust assembly of claim 1, wherein, The bottom of the exhaust ring (6) is provided with a plurality of stop blocks (7) at intervals.

10. The exhaust assembly of claim 9, wherein, The bottom end of the stop block (7) and the bottom disc (3) leave a first gap, and the height of the first gap is 0-10mm.

11. The exhaust assembly of claim 1, wherein, The height of the first gap is 0-3mm.

12. The exhaust assembly of claim 11, wherein, The bottom end of the stop block (7) is located on the bottom disc (3).

13. The exhaust assembly of claim 12, wherein, The bottom of the exhaust ring (6) is provided with a plurality of stop blocks (7) continuously, and the bottom end of the stop block (7) and the bottom disc (3) leave a second gap, and the height of the second gap is 1-10mm.

14. The exhaust assembly of claim 13, wherein, The height of the second gap is 1-3mm.

15. The exhaust assembly of claim 1, wherein, The exhaust ring (6) is provided with an exhaust groove (10) at a position corresponding to the air permeable groove (4), and the exhaust groove (10) and the air permeable groove (4) are mutually penetrated.

16. The exhaust assembly of claim 15, wherein, ​ 17. The exhaust assembly of claim 1, wherein, ​ 18. The exhaust assembly of claim 1, wherein, The bottom plate (3) has a structure of low outer edge and high middle.

19. The exhaust assembly of claim 1, wherein, An upper end of the exhaust ring (6) is provided with an exhaust ring connecting ring (11) for connecting with a cover of the packaging container.

20. A bottle cap comprising a cap body, a gas permeable hole being provided in the cap body, characterized in that, A bottom end of the cover is provided with the exhaust assembly of any one of claims 1-19, and an exhaust ring (6) of the exhaust assembly is in through connection with the vent hole.

21. The bottle cap according to claim 20, wherein The bottom end of the cover is provided with a cover connecting ring, and the upper end of the exhaust ring (6) is provided with an exhaust ring connecting ring (11) in interference fit or threaded connection with the cover connecting ring.

22. A packaging container, characterized in that The packaging container is a packaging barrel, a packaging bottle or a packaging bag.

23. A packaging container, characterized in that The packaging container is a packaging barrel, a packaging bottle or a packaging bag.

24. The packaging container of claim 23, wherein, ​

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