Pressure relief and exhaust assembly, bottle cap and packaging container

Abstract

The utility model discloses a pressure relief and exhaust assembly, a bottle cap and a packaging container, the pressure relief and exhaust assembly comprises a lower sleeve seat and an upper sleeve ring, the upper sleeve ring comprises an exhaust ring, a breathable film is installed in the exhaust ring, and a baffle ring is arranged around the outer side of the breathable film; a fixing ring is arranged at the bottom end of the exhaust ring and located at the end, close to the circle center, of the exhaust ring. The lower sleeve seat comprises an annular base, a plurality of first exhaust grooves are formed in the bottom of the annular base close to the circumferential direction at intervals, gaps are reserved between the first exhaust grooves and the side face of the annular base, a plurality of stand columns are arranged at the bottom of the annular base close to the circle center direction at intervals, the baffle rings are located on the stand columns, and the fixing rings are clamped in the gaps. According to the pressure relief and exhaust assembly, the fixing ring is arranged at the bottom end of the exhaust ring, the upper sleeve ring and the lower sleeve base are fixedly connected through the fixing ring, at the moment, the upper sleeve ring is located on the lower sleeve base, shielding of the first exhaust groove is avoided, and normal exhaust of the first exhaust groove is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pressure relief exhaust component, concretely relates to a pressure relief exhaust assembly, and a bottle cap and a packaging container comprising the pressure relief exhaust assembly. BACKGROUND

[0002] Liquid is stored in a container, when the liquid in the container vaporizes or the gas dissolved in the liquid volatilizes, the air pressure inside the container will rise, when it accumulates to a certain degree, there may be a risk of bursting.

[0003] The authorized announcement number CN 213975229U discloses a vent plug, comprising a sleeve seat and a vent plug, the vent plug is detachably installed to the inside of the sleeve seat, the sleeve seat comprises a cylindrical outer wall, and a top cover on the outer wall of the sleeve seat, the top cover is provided with a vent hole; the vent plug comprises a ring body, a plurality of uniformly distributed outer clamping strips are arranged on the outer wall of the ring body, the outer walls of the plurality of outer clamping strips are located on the same circle, and the diameter of the circle is slightly larger than the inner diameter of the outer wall of the sleeve seat; a first inner ring cavity and a second inner ring cavity are arranged in the ring body, the first inner ring cavity is located below the second inner ring cavity, the inner diameter of the first inner ring cavity is smaller than the inner diameter of the second inner ring cavity; a support is arranged in the first inner ring cavity; a silica gel sheet is installed on the support in the first inner ring cavity; a cover plate is installed on the second inner ring cavity; and a venting film is installed on the cover plate.

[0004] The vent plug sets the first inner ring cavity and the second inner ring cavity in the ring body, the first inner ring cavity is located below the second inner ring cavity, the cover plate is installed on the second inner ring cavity, the cover plate has a central through hole, and the venting film is installed on the cover plate. The silica gel sheet is installed on the first inner ring cavity, and the diameter of the silica gel sheet is smaller than the inner diameter of the first inner ring cavity. The gas discharged from the container enters the position of the venting film through the vent hole, and is discharged from the gap between the silica gel sheet and the first inner ring cavity. However, since the connection between the sleeve seat and the vent plug is realized by the outer clamping strips, when the outer clamping strips are clamped into the sleeve seat, the vent hole on the top cover of the sleeve seat may be blocked, affecting the normal realization of the venting function. Utility model content

[0005] In view of the above defects of the prior art, the utility model provides a pressure relief exhaust assembly, which is clamped on the inner surface of the lower sleeve by the fixing ring, realizes the connection between the upper sleeve and the lower sleeve, does not need to locate the whole upper sleeve in the lower sleeve, avoids the problem that the exhaust groove is blocked, and guarantees the normal pressure relief function. Therefore, the utility model also provides a bottle cap and a packaging container comprising the above pressure relief exhaust assembly.

[0006] The first aspect of the utility model provides a pressure relief exhaust assembly, which comprises a lower sleeve and an upper sleeve ring located on the lower sleeve,

[0007] The upper sleeve ring comprises an exhaust ring, a gas permeable membrane is installed in the exhaust ring, and a blocking ring is arranged outside the gas permeable membrane; a fixing ring is arranged at the bottom end of the exhaust ring, and the fixing ring is located at the end of the exhaust ring close to the center of the circle;

[0008] The lower sleeve seat comprises an annular base, a plurality of first exhaust grooves are arranged at the bottom of the annular base in the circumferential direction, a gap is left between the first exhaust grooves and the side surface of the annular base, a plurality of columns are arranged at the bottom of the annular base in the direction close to the center of the circle, and the blocking ring is located on the columns; and the fixing ring is clamped in the gap.

[0009] The fixing ring is clamped in the gap of the annular base, at this time, the lower surface of the upper sleeve ring is in contact with the upper surface of the lower sleeve seat, the fixed connection of the upper sleeve ring and the lower sleeve seat is realized, and at the same time, the blocking ring is located on the columns. The gas enters the space surrounded by the first exhaust grooves, the columns and the blocking ring, is discharged from the gas permeable membrane, and the gas permeation effect is realized. Since the upper sleeve ring and the lower sleeve seat are connected through the fixing ring, the fixing ring is located in the gap between the first exhaust grooves and the annular base, and the exhaust effect of the first exhaust grooves is not affected due to improper installation position.

[0010] The gap is the space left between the first exhaust grooves and the side surface of the annular base, which is used for installing the fixing ring, so that the installation position of the fixing ring is fixed, and the first exhaust grooves are not shielded due to improper installation of the artificial or machine.

[0011] As a preferred embodiment, one end of the column close to the side surface of the annular base is provided with a guide surface, the outer diameter of the guide surface gradually increases from top to bottom, and the fixing ring is clamped on the periphery of the guide surface.

[0012] By arranging the guide surface, the quick installation of the upper sleeve ring and the lower sleeve seat is realized.

[0013] As a more preferred embodiment, the fixing ring is in interference fit with the guide surface.

[0014] The fixing ring is in interference fit with the guide surface, the fixed installation of the upper sleeve ring and the lower sleeve seat is completed, and the relative movement of the upper sleeve ring and the lower sleeve seat in the use process is avoided.

[0015] As a more preferred embodiment, the upper part of the guide surface is provided with a guide angle.

[0016] The arrangement of the guide angle facilitates the quick insertion of the fixing ring into the gap.

[0017] As a preferred embodiment, the outer side of the fixing ring is provided with an annular groove, and the side surface of the annular base is provided with an annular protrusion used in cooperation with the annular groove.

[0018] In the process of inserting the fixing ring into the gap, when the annular groove is in contact with the annular protrusion, the annular protrusion is clamped into the annular groove, realizing the fixed connection of the upper sleeve ring and the lower sleeve seat. The fixed connection of the upper sleeve ring and the lower sleeve seat can be realized by setting a guide surface at one end of the column close to the side surface of the annular base, so that the fixing ring is in interference fit with the guide surface to realize the fixed connection; or an annular groove can be arranged on the outer side of the fixing ring, and an annular protrusion can be arranged on the side surface of the annular base, the annular protrusion and the annular groove are matched to realize the fixed connection of the upper sleeve ring and the lower sleeve seat. Of course, the above two ways can be used at the same time.

[0019] As a preferred embodiment, the first exhaust groove corresponds to the opening position between the adjacent columns.

[0020] The opening position between the first exhaust groove and the adjacent column can be arranged oppositely or staggered. When arranged oppositely, the liquid entering the column can quickly flow into the first exhaust groove through the opening, avoiding the accumulation of liquid in the space where the column is located.

[0021] As a more preferred embodiment, the annular base is provided with a water receiving platform at the corresponding position of the breathable film, and the column surrounds the outer side of the water receiving platform.

[0022] After long-term use, if the gas entering the breathable film becomes liquid droplets due to condensation, the liquid droplets on the breathable film directly drop into the water receiving platform, gather on the water receiving platform, and then quickly flow into the first exhaust groove from the opening position between the columns, ensuring the normal discharge of the liquid entering the lower sleeve seat.

[0023] As a more preferred embodiment, the water receiving platform is a planar structure or a protruding structure.

[0024] The water receiving platform can be arranged as a planar structure or a protruding structure. When the water receiving platform is arranged as a protruding structure, the water receiving platform presents a landslide structure with the middle high and the two sides low. When the liquid condensed by the breathable film enters the water receiving platform, the liquid slides to the bottom end of the landslide structure, so that the liquid keeps a far distance from the breathable film, reducing the risk of the liquid splashing into the breathable film again, effectively protecting the breathable film.

[0025] In addition, because the water receiving platform presents a landslide structure with the middle high and the two sides low, when the liquid splashes out of the first exhaust groove and enters the space surrounded by the column and the blocking ring, the water receiving platform has a certain blocking effect, reducing the risk of the liquid splashing into the breathable film.

[0026] As a preferred embodiment, the exhaust ring is provided with a support frame, the breathable film is located on the support frame, and the support frame is located in the space surrounded by the blocking ring.

[0027] The support frame is arranged at the center of the exhaust ring, so that the breathable film is located at the center of the exhaust ring and corresponds to the exhaust port on the exhaust ring.

[0028] The structure of the support frame can be selected as required, and any support frame that meets the use of the present application can be used.

[0029] The support frame is usually arranged at the center of the exhaust ring, so that the breathable film is located at the center of the exhaust ring and corresponds to the exhaust port on the exhaust ring.

[0030] As a preferred embodiment, the top end of the exhaust ring is provided with a connecting ring.

[0031] When the pressure relief exhaust assembly is applied to a specific scene, it is necessary to connect the pressure relief exhaust assembly with the solid carrier in the used scene. For example, when used in a packaging container, the pressure relief exhaust assembly needs to be installed in the packaging container. The pressure relief exhaust assembly can be directly bonded in the packaging container, or a connecting ring can be provided on the pressure relief exhaust assembly. A cover connecting ring is arranged at the bottom end of the cover of the packaging container, and the connecting ring of the pressure relief exhaust assembly is connected with the cover connecting ring of the packaging container by interference fit, threaded connection or other connection.

[0032] When the pressure relief exhaust assembly is provided with a connecting ring, the breathable film is usually located at the position where the connecting ring and the exhaust ring are connected. Of course, it can also be arranged at other positions of the exhaust ring, which can be set as required.

[0033] As a preferred embodiment, the first exhaust groove is provided with a reinforcing rib.

[0034] The reinforcing rib increases the strength of the first exhaust groove. The reinforcing rib can be one or multiple, which can be flexibly selected according to the size of the first exhaust groove.

[0035] As a preferred embodiment, the exhaust ring is provided with a second exhaust groove at the corresponding position of the annular base.

[0036] As a preferred embodiment, a plurality of positioning grooves are arranged on the stop ring at intervals, and a positioning column is arranged above the stand column and cooperates with the positioning groove.

[0037] Through the cooperation of the positioning groove and the positioning column, the first exhaust groove and the second exhaust groove are in a facing position.

[0038] As a preferred embodiment, the material of the breathable film is expanded polytetrafluoroethylene.

[0039] The material of the breathable film is expanded polytetrafluoroethylene, and the gas can be discharged through the breathable film, while the dust and impurities in the external environment cannot enter, so that the solution in the liquid storage container is not polluted while ensuring the breathability.

[0040] The second aspect of the utility model provides a bottle cap, including the cover body that is provided with the breathable hole, still include above-mentioned pressure relief exhaust component, the exhaust ring of pressure relief exhaust component and the breathable hole of cover body through connection.

[0041] The exhaust ring of the pressure relief exhaust component is installed at the position of the breathable hole of the cover body, so that the gas entering the exhaust ring is discharged through the breathable hole.

[0042] As a preferred embodiment, the bottom end of the cover body is provided with a cover body connecting ring, the top end of the exhaust ring is provided with a connecting ring, and the connecting ring of the pressure relief exhaust component is connected with the cover body connecting ring.

[0043] The pressure relief exhaust component can be combined with the cover body to form a new bottle cap, the cover body connecting ring provided at the bottom end of the cover body is connected with the connecting ring of the pressure relief exhaust component, and the connection of the cover body and the pressure relief exhaust component is completed.

[0044] The third aspect of the utility model provides a packaging container, which comprises a container body, an exhaust hole is arranged on the container body, and a pressure relief exhaust component is arranged in the container body.

[0045] The exhaust ring of the pressure relief exhaust component is installed at the position of the exhaust hole of the container body, so that the gas entering the exhaust ring is discharged through the exhaust hole.

[0046] The fourth aspect of the utility model provides a packaging container, which comprises a container body and a bottle cap.

[0047] After the pressure relief exhaust component is connected with the cover body, the assembled bottle cap is covered on the packaging container, and the connection mode of the packaging container and the bottle cap is not limited, and the conventional screw connection is used, that is, the inner thread is arranged at the bottom end of the cover body, and the outer thread is arranged on the bottle mouth part of the packaging container.

[0048] Compared with the prior art, the utility model has the following beneficial effects:

[0049] (1) The pressure relief exhaust assembly of the utility model is provided with a fixing ring at the bottom end of the exhaust ring, the fixing ring is clamped into the gap between the first exhaust groove and the annular base, the upper sleeve ring is fixedly connected with the lower sleeve seat, at this time, the upper sleeve ring is located on the lower sleeve seat, instead of being located in the lower sleeve seat, the first exhaust groove is not shielded, and normal exhaust of the first exhaust groove is guaranteed.

[0050] (2) The pressure relief exhaust assembly of the utility model is provided with a baffle ring around the outer side of the breathable film, when the upper sleeve ring and the lower sleeve seat are in contact, the breathable film is located in the relatively closed space surrounded by the baffle ring and the stand column; in addition, the first exhaust groove is located close to the circumferential direction of the annular base, and is far away from the breathable film, the two jointly reduce the risk that the liquid discharged from the first exhaust groove splashes the breathable film, and prolong the service life of the breathable film.

[0051] (3) The pressure relief exhaust assembly of the utility model, after the upper sleeve ring and the lower sleeve seat are installed, the upper sleeve ring is located on the lower sleeve seat, the upper sleeve ring and the lower sleeve seat are in a relatively closed state, the upper sleeve ring is clamped in the lower sleeve seat in the prior art, due to the gap between the clamping strips, liquid enters the lower sleeve seat, repeatedly washes the components in the lower sleeve seat, and brings abrasion of the components.

[0052] The utility model discloses a pressure relief exhaust assembly, which is characterized by the following technical solutions. BRIEF DESCRIPTION OF DRAWINGS

[0053] Figure 1 Fig. 1 is a perspective view of the pressure relief exhaust assembly in the embodiment 1 of the utility model;

[0054] Figure 2 Fig. 2 is a structure schematic view of the upper sleeve ring of the pressure relief exhaust assembly in the embodiment 1 of the utility model;

[0055] Figure 3 Fig. 3 is a structure schematic view of the lower sleeve seat of the pressure relief exhaust assembly in the embodiment 1 of the utility model;

[0056] Figure 4 Fig. 4 is a structure schematic view of the upper sleeve ring of the pressure relief exhaust assembly in the embodiment 2 of the utility model;

[0057] Figure 5 Fig. 5 is a structure schematic view of the lower sleeve seat of the pressure relief exhaust assembly in the embodiment 2 of the utility model;

[0058] Figure 6 Fig. 6 is a sectional view of the lower sleeve seat of the pressure relief exhaust assembly in the embodiment 2 of the utility model;

[0059] Figure 7 Fig. 7 is a perspective view of the pressure relief exhaust assembly in the embodiment 2 of the utility model;

[0060] Figure 8 is the installation front structure schematic view of the pressure relief exhaust assembly in the embodiment 2 of the utility model;

[0061] Figure 9 is the installation rear structure schematic view of the pressure relief exhaust assembly in the embodiment 2 of the utility model;

[0062] Figure 10 is the structure schematic view of the lower sleeve base of the pressure relief exhaust assembly in the embodiment 3 of the utility model;

[0063] Figure 11 is the structure schematic view of the bottle cap of the utility model;

[0064] Figure 12 is the structure schematic view of the packaging container of the utility model.

[0065] Wherein: 1-Upper sleeve ring, 2-Lower sleeve base, 3-Exhaust ring, 4-Stop ring, 5-Support frame, 6-Fixed ring, 7-Ring base, 8-First exhaust groove, 9-Interstice, 10-Stand, 11-Guide surface, 12-Guide angle, 13-Ring groove, 14-Ring protrusion, 16-Second exhaust groove, 17-Positioning groove, 18-Positioning column, 19-Connecting ring, 20-Water receiving platform, 21-Cover, 22-Container body, 23-Stiffener. DETAILED DESCRIPTION

[0066] In order to make the technical means, the creation features, the purposes and the effects realized by the utility model easy to understand, the following further describes the utility model in combination with specific drawings. However, the utility model is not limited to the following cases.

[0067] It should be understood that the structures, the proportions, the sizes and the like shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and are not used to limit the implementation conditions of the utility model, and therefore do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0068] In order to solve the problem that the packaging container is cracked due to the vaporization of liquid in the solution or the volatilization of the gas dissolved in the solution when the packaging container stores the solution. The authorized announcement No. CN 213975229U discloses a gas permeable plug, which is connected with an outer sleeve by inserting an outer clamping strip into the outer sleeve. However, the outer clamping strip is easily misaligned during installation without any guiding or limiting effect, which partially or completely blocks the gas permeable hole and affects the normal exhaust of the gas permeable hole. In addition, the gas permeable plug and the outer sleeve are connected in an open state, and liquid enters the gas permeable plug and the outer sleeve through the gap between the outer clamping strips. The repeated entry of liquid into the outer sleeve may cause wear to the outer clamping strip and affect the stability of the installation of the gas permeable plug and the outer sleeve.

[0069] The present application changes the structure of the gas permeable plug located in the outer sleeve and independently designs a pressure relief exhaust assembly. The pressure relief exhaust assembly includes an upper sleeve ring and a lower sleeve seat. The upper sleeve ring is installed above the lower sleeve seat, and the structure after assembly of the upper sleeve ring and the lower sleeve seat is relatively closed.

[0070] The first aspect of the present application provides a pressure relief exhaust assembly, which provides exhaust or gas permeable function, similar to a gas permeable plug or a gas permeable valve. The pressure relief exhaust assembly can be connected with the cover body to connect the pressure relief exhaust assembly and the cover body as a whole. The cover is arranged at the opening position of the packaging container to realize the normal discharge of the volatile gas in the packaging container. The pressure relief exhaust assembly can also be directly connected with the packaging container, such as direct bonding, to realize the gas permeable effect.

[0071] The pressure relief exhaust assembly in the present application includes an upper sleeve ring 1 and a lower sleeve seat 2. The materials of the upper sleeve ring 1 and the lower sleeve seat 2 are hard plastic, which can be any one of ABS, PE, PP and PVC. Of course, the materials of the upper sleeve ring 1 and the lower sleeve seat 2 are not limited to this, and any material that can be used in the present application can be selected.

[0072] The upper sleeve ring 1 includes an exhaust ring 3, and a connecting ring 19 is arranged above the exhaust ring 3. In specific application scenarios, the connecting ring 19 is usually connected with external components, such as a cover body. When the connecting ring 19 is connected with the cover body, a gas permeable hole is arranged on the cover body, a cover body connecting ring is arranged at the bottom end of the gas permeable hole, and the connecting ring 19 above the exhaust ring 3 is connected with the cover body connecting ring through screw connection or interference fit.

[0073] A gas permeable film is installed in the exhaust ring 3, and a blocking ring 4 is arranged outside the gas permeable film. Of course, in order to ensure the firmness of the installation of the gas permeable film and avoid the rupture of the gas permeable film, a support frame 5 is arranged on the exhaust ring 3, and the gas permeable film is installed on the support frame 5. The shape of the support frame 5 is not limited and can be cross-shaped, multi-hole-shaped or other structures.

[0074] The air permeable membrane is usually installed at the center of the exhaust ring 3 so that the air permeable membrane is opposite to the exhaust port of the exhaust ring 3. The air permeable membrane can also be located at the position where the exhaust ring 3 is connected with the connecting ring 19, which can be selected as required.

[0075] The material of the air permeable membrane is expanded polytetrafluoroethylene. The air permeable membrane is made of this material, so that the gas can be discharged through the air permeable membrane, and the dust and other impurities in the external environment cannot enter, thereby ensuring the air permeability and preventing the liquid in the liquid storage container from being polluted.

[0076] The bottom end of the exhaust ring 3 is provided with a fixing ring 6, which is located at the end of the exhaust ring 3 close to the center of the circle, and the inner wall of the exhaust ring 3 and the fixing ring 6 are located on the same annular ring. The fixing ring 6 is provided to achieve the fixed installation of the upper sleeve ring 1 and the lower sleeve base 2.

[0077] The lower sleeve base 2 includes an annular base 7, and a plurality of first exhaust grooves 8 are arranged at the bottom of the annular base 7 close to the circumferential direction. A gap 9 is left between the first exhaust grooves 8 and the side surface of the annular base 7, and the fixing ring 6 is clamped in the gap 9. A plurality of columns 10 are arranged at the bottom of the annular base 7 close to the center direction. Preferably, the plurality of columns 10 are located on the same circle, and the end of the column 10 close to the center is in contact with the lower surface of the blocking ring 4. When the plurality of columns 10 are not located on the same circle, the lower surface of the blocking ring 4 is located at the inner side of the upper surface of the column 10.

[0078] After the fixing ring 6 is installed in the gap 9, no matter how the fixing ring 6 is installed, it will not cause the blocking effect of the first exhaust groove 8.

[0079] The fixing ring 6 is clamped in the gap 9, which is usually achieved by two ways:

[0080] The first way is to provide a guide surface 11 at the end of the column 10 close to the side surface of the annular base 7, and the fixing ring 6 is fixedly connected with the guide surface 11 by interference fit. At this time, in order to facilitate installation, a guide angle 12 is provided at the upper end of the guide surface 11, and the guide surface 11 gradually increases in diameter from top to bottom close to the annular base 7.

[0081] The second way is to provide an annular groove 13 on the outer side of the fixing ring 6, and an annular protrusion 14 is provided on the side surface of the annular base 7, and the annular protrusion 14 and the annular groove 13 are matched to achieve the fixed connection of the upper sleeve ring 1 and the lower sleeve base 2.

[0082] Of course, the above two ways can be used alternatively, such as only providing the guide surface 11 or only providing the annular groove 13 and the annular protrusion 14, or they can be used simultaneously. When used simultaneously, the fixed connection effect of the upper sleeve ring 1 and the lower sleeve base 2 is better.

[0083] When the fixing ring 6 is clamped in the gap 9, the lower surface of the blocking ring 4 is in contact with the upper surface of the column 10, and the upper sleeve ring 1 is located on the lower sleeve 2. The gas enters the space surrounded by the column 10 and the blocking ring 4 through the first exhaust groove 8, is discharged from the gas permeable membrane, and realizes the gas permeation effect. Because the upper sleeve ring 1 and the lower sleeve 2 are connected by the fixing ring 6, the fixing ring 6 is located in the gap 9 between the column 10 and the annular base 7, and the position is fixed, avoiding the blocking of the first exhaust groove 8 due to improper installation.

[0084] The columns 10 are arranged at intervals, and there is an opening between the column 10 and the column 10. When the opening position between the first exhaust groove 8 and the adjacent column 10 is relatively arranged, the liquid entering the column 10 can quickly flow into the first exhaust groove 8 through the opening, avoiding the accumulation of liquid in the space where the column 10 is located.

[0085] When the opening position between the first exhaust groove 8 and the adjacent column 10 is in a relative position, the exhaust and liquid discharge effect is better, but at the same time, because the opening position is relatively close to the position of the first exhaust groove 8, the liquid discharged from the first exhaust groove 8 may splash into the column 10, and then splash into the gas permeable membrane.

[0086] In order to improve the effect of preventing splashing, a blocking block 15 is arranged between every two columns 10, and the contact surface of the column 10 and the blocking block 15 is fitted. At this time, the first exhaust groove 8 is located outside the blocking block 15, and the liquid discharged from the first exhaust groove 8 is difficult to enter the space surrounded by the column 10 and the blocking ring 4 after being blocked by the blocking block 15.

[0087] The bottom end of the blocking block 15 is located above the annular base 7, so that a gap is left between the blocking block 15 and the annular base 7, and the top end of the blocking block 15 is lower than or flush with the column 10. When the top end of the blocking block 15 is lower than the column 10, the top end and the bottom end of the blocking block 15 can realize the gas permeation effect at the same time. When the blocking block 15 is flush with the column 10, the bottom end of the blocking block 15 is located above the annular base 7, and the space between the blocking block 15 and the annular base 7 has an exhaust effect. In addition, if there is liquid splashing from the first exhaust groove 8 into the space surrounded by the column 10, it will flow out from the space between the blocking block 15 and the annular base 7. Therefore, the space between the blocking block 15 and the annular base 7 has both exhaust and liquid discharge effects.

[0088] Of course, a water receiving table 20 can also be arranged at the corresponding position of the annular base 7 relative to the gas permeable membrane, and the column 10 surrounds the outside of the water receiving table 20.

[0089] After long-term use, if the gas entering the breathable membrane becomes liquid drops due to condensation, the liquid drops on the breathable membrane directly drip into the water receiving table 20, and after gathering on the water receiving table 20, flow out from the space between the stand columns 10 or between the blocking blocks 15 and the annular base 7, ensuring the normal discharge of the liquid entering the lower sleeve 2.

[0090] The water receiving table 20 can be provided in a flat structure or a convex structure. When the water receiving table 20 is provided in a convex structure, the water receiving table 20 presents a landslide structure with the middle being high and the two sides being low. When the liquid condensed by the breathable membrane enters the water receiving table 20, the liquid slides to the bottom end of the landslide structure, so that the liquid is kept away from the breathable membrane, reducing the risk of the liquid splashing back into the breathable membrane, and effectively protecting the breathable membrane. Moreover, due to the structure of the middle being high and the two sides being low, the water receiving table 20 has a blocking effect on the liquid splashing from the first exhaust groove 8, avoiding the liquid splashing into the breathable membrane and affecting the use function of the breathable membrane.

[0091] The first exhaust groove 8 is provided with a reinforcing rib 23. The reinforcing rib 23 increases the strength of the first exhaust groove 8. The reinforcing rib 23 can be provided with one or more, which can be flexibly selected according to the size of the first exhaust groove 8.

[0092] As a deformation of the exhaust ring 3, the second exhaust groove 16 is provided on the exhaust ring 3 at the corresponding position of the annular base 7. At this time, in order to ensure that the first exhaust groove 8 and the second exhaust groove 16 are in a relative position, a plurality of positioning grooves 17 are provided on the blocking ring 4 at intervals, and the positioning column 18 is provided on the stand column 10 at the corresponding position of the positioning groove 17. Through the positioning effect of the positioning groove 17 and the positioning column 18, the first exhaust groove 8 and the second exhaust groove 16 are in a facing position.

[0093] In the second aspect of the utility model, a bottle cap is provided, which comprises a cap body provided with a breathable hole, and the above-mentioned pressure relief and exhaust assembly, and the exhaust ring 3 of the pressure relief and exhaust assembly is connected with the breathable hole of the cap body in penetration.

[0094] The exhaust ring 3 of the pressure relief and exhaust assembly is installed at the position of the breathable hole of the cap body, so that the gas entering the exhaust ring 3 is discharged through the breathable hole.

[0095] Usually, the cap body is provided with a cap body connecting ring at the bottom end, the top end of the exhaust ring 3 is provided with a connecting ring 19, and the connecting ring 19 of the pressure relief and exhaust assembly is connected with the cap body connecting ring.

[0096] The above-mentioned pressure relief and exhaust assembly can be combined with the cap body to form a new bottle cap. The cap body connecting ring provided at the bottom end of the cap body is connected with the connecting ring 19 of the pressure relief and exhaust assembly, and the connection of the cap body and the pressure relief and exhaust assembly is completed. The connection mode is not limited here, and the conventional modes are interference fit or threaded connection.

[0097] The third aspect of the utility model provides a kind of packaging container, including container body, exhaust hole is provided on container body, the pressure relief exhaust component of above-mentioned is provided in container body, exhaust ring 3 of pressure relief exhaust component is connected with the exhaust hole of container body.

[0098] Exhaust ring 3 of pressure relief exhaust component is installed in the exhaust hole position of container body, so that the gas into exhaust ring 3 is discharged through exhaust hole.

[0099] The fourth aspect of the utility model provides a kind of packaging container, including container body, further include the bottle cap of above-mentioned, bottle cap is covered on container body.

[0100] After pressure relief exhaust component is connected with cover body, bottle cap after assembly is covered on the top of packaging container, the connection mode of packaging container and bottle cap is not limited, and conventional is screw connection.Liquid in packaging solution vaporizes, gas passes through pressure relief exhaust component and enters the air hole on cover body, then enters atmosphere, realizes exhaust effect.

[0101] Example 1

[0102] As Figures 1-3 A pressure relief exhaust component, including upper sleeve ring 1 and lower sleeve base 2, upper sleeve ring 1 includes exhaust ring 3, connection ring 19 is provided above exhaust ring 3, support frame 5 is provided in exhaust ring 3, gas permeable membrane is located on support frame 5, stop ring 4 is provided around the outside of support frame 5, and stop ring 4 encloses support frame 5 and gas permeable membrane in a relatively closed space.The bottom end of exhaust ring 3 is provided with fixed ring 6, and fixed ring 6 is located at the end of exhaust ring 3 close to the center of the circle;Annular groove 13 is provided on the outside of fixed ring 6.

[0103] Lower sleeve base 2 includes annular base 7, and a plurality of first exhaust grooves 8 are provided at the bottom of annular base 7 close to the circumferential direction and are spaced apart, in order to increase the strength of first exhaust grooves 8, reinforcing ribs 23 are arranged in first exhaust grooves 8, so as to divide the same exhaust groove 8 into multiple parts.

[0104] The gap 9 between the side surface of the first exhaust groove 8 and the annular base 7 is provided with the fixed ring 6. The bottom of the annular base 7 is provided with three vertical columns 10 close to the circumferential direction, and the three vertical columns 10 are located on the same circle, and the end of the vertical column 10 close to the center of the circle is in contact with the lower surface of the stop ring 4. The end of the vertical column 10 away from the center of the circle is provided with a guide surface 11, and the outer diameter of the guide surface 11 gradually increases in the direction close to the annular base 7 (from top to bottom). By arranging the guide surface 11, the upper sleeve ring 1 and the lower sleeve base 2 are quickly installed. The interference fit between the fixed ring 6 and the guide surface 11 makes the connection between the fixed ring 6 and the guide surface 11 more firm, realizing the first layer fixation of the upper sleeve ring 1 and the lower sleeve base 2.

[0105] There are openings between the adjacent columns 10, the first exhaust groove 8 corresponds to the position of the opening between the adjacent columns 10, and the liquid entering the column 10 can be quickly discharged into the first exhaust groove 8 through the opening, so as to avoid the accumulation of liquid in the space where the column 10 is located.

[0106] The side surface of the annular base 7 is provided with an annular protrusion 14, and the annular protrusion 14 is used in cooperation with the annular groove 13 to realize the second layer fixing of the upper sleeve ring 1 and the lower sleeve base 2.

[0107] The gas enters the space surrounded by the column 10 and the blocking ring 4 from the position between the two columns 10 of the first exhaust groove 8, is discharged through the gas permeable membrane, and realizes the gas permeable effect.

[0108] Embodiment 2

[0109] As Figures 4-9 A pressure relief exhaust assembly includes an upper sleeve ring 1 and a lower sleeve base 2, the upper sleeve ring 1 includes an exhaust ring 3, the upper side of the exhaust ring 3 is provided with a connecting ring 19, a support frame 5 is arranged in the exhaust ring 3, a gas permeable membrane is arranged on the support frame 5, a blocking ring 4 is arranged around the outer side of the support frame 5, and the support frame 5 and the gas permeable membrane are surrounded in a relatively closed space. The bottom end of the exhaust ring 3 is provided with a fixed ring 6, the fixed ring 6 is located at the end of the exhaust ring 3 close to the center of the circle, and the outer side of the fixed ring 6 is provided with an annular groove 13.

[0110] The lower sleeve base 2 includes an annular base 7, a plurality of first exhaust grooves 8 are arranged at the bottom of the annular base 7 in the direction close to the circumference and are spaced apart, in order to increase the strength of the first exhaust groove 8, a reinforcing rib 23 is arranged in the first exhaust groove 8, and the same exhaust groove 8 is divided into a plurality of parts.

[0111] The first exhaust groove 8 and the side surface of the annular base 7 leave a gap 9, and the fixed ring 6 is clamped in the gap 9. The bottom of the annular base 7 is provided with three columns 10 in the direction close to the center of the circle and spaced apart, the three columns 10 are located on the same circle, the end of the column 10 close to the center of the circle is in contact with the lower surface of the blocking ring 4, the end of the column 10 away from the center of the circle is provided with a guide surface 11, the outer diameter of the guide surface 11 gradually increases in the direction close to the annular base 7, and the upper end of the guide surface 11 is provided with a guide angle 12. The side surface of the annular base 7 is provided with an annular protrusion 14, and the annular protrusion 14 is used in cooperation with the annular groove 13 to realize the fixed connection of the upper sleeve ring 1 and the lower sleeve base 2.

[0112] There are openings between the adjacent columns 10, the first exhaust groove 8 corresponds to the position of the opening between the adjacent columns 10, and the liquid entering the column 10 can be quickly discharged into the first exhaust groove 8 through the opening.

[0113] The water receiving platform 20 is in a landslide structure or a convex structure with the middle higher and the two sides lower. When the condensed liquid of the breathable film enters the water receiving platform 20, the liquid slides to the bottom end of the landslide structure, so that the liquid is kept away from the breathable film, reducing the risk of the liquid splashing into the breathable film again, effectively protecting the breathable film. The liquid flowing through the landslide structure of the water receiving platform 20 can quickly flow into the first exhaust groove 8 from the opening position between the adjacent columns 10.

[0114] The second exhaust groove 16 is arranged at the corresponding position of the annular base 7. The plurality of positioning grooves 17 are arranged on the blocking ring 4 in an interval. The positioning column 18 is arranged at the corresponding position of the positioning groove 17 of the column 10 and is used in cooperation with the positioning groove 17.

[0115] Through the cooperation of the positioning groove 17 and the positioning column 18, the first exhaust groove 8 and the second exhaust groove 16 are in the opposite position.

[0116] Embodiment 3

[0117] As Figure 10 The difference between the embodiment 2 and the embodiment 3 is that the first exhaust groove 8 is not provided with the reinforcing rib 23, four columns 10 are arranged, the blocking block 15 is arranged between the two columns 10, the contact surface of the column 10 and the blocking block 15 is fitted, at this time, the first exhaust groove 8 is located outside the blocking block 15, and the liquid discharged from the first exhaust groove 8 is difficult to enter the space surrounded by the column 10 and the blocking ring 4 after being blocked by the blocking block 15. The bottom end of the blocking block 15 is located above the annular base 7, so that the gap is left between the blocking block 15 and the annular base 7, and the top end of the blocking block 15 is lower than the column 10.

[0118] The bottom end of the blocking block 15 is located above the annular base 7, and the top end of the blocking block 15 is lower than the column 10, so that the breathable effect can be realized through the top end and the bottom end of the blocking block 15. If the liquid splashes from the first exhaust groove 8 into the space surrounded by the column 10 or the liquid drops of the breathable film condense and enter the space surrounded by the column 10, the liquid will flow out from the space between the blocking block 15 and the annular base 7. Therefore, the space between the blocking block 15 and the annular base 7 has the exhaust effect and the liquid discharge effect. The blocking block 15 enhances the effect of preventing splashing.

[0119] Embodiment 4

[0120] As Figure 11 A bottle cap, comprising a cap body provided with a breathable hole, a cap body connecting ring arranged at the bottom end of the cap body, and the pressure relief and exhaust assembly, the top end of the exhaust ring 3 of the pressure relief and exhaust assembly is provided with a connecting ring 19, and the connecting ring 19 of the pressure relief and exhaust assembly is connected with the cap body connecting ring.

[0121] Embodiment 5

[0122] As Figure 12 A kind of packaging container, including container body, further including the bottle cap described above, bottle cap cover is established on container body.

[0123] When the gas volatilization or vaporization occurs in the liquid in the container body during transportation or storage, the gas enters the lower sleeve 2 from the first exhaust groove 8, and then enters the space surrounded by the column 10 and the retaining ring 4, and is discharged from the gas permeable membrane, realizing the pressure relief and exhaust effect. When the liquid splashes or the liquid condensed on the gas permeable membrane enters the space surrounded by the column 10 and the retaining ring 4, the liquid enters the container body again through the first exhaust groove 8 from the opening between the adjacent columns 10.

[0124] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes to the present application without creative labor, based on the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the existing technology according to the concept of the present application shall be within the protection scope determined by the claims.

Claims

1. A pressure relief and exhaust assembly, characterized in that, Includes a lower sleeve and an upper collar located on the lower sleeve. The upper ring includes an exhaust ring, a breathable membrane is installed inside the exhaust ring, and a retaining ring is provided around the outside of the breathable membrane; a fixing ring is provided at the bottom end of the exhaust ring, and the fixing ring is located at the end of the exhaust ring near the center. The lower sleeve includes an annular base. A plurality of first exhaust grooves are spaced apart on the bottom of the annular base near the circumference. A gap is left between the first exhaust grooves and the side of the annular base. A plurality of uprights are spaced apart on the bottom of the annular base near the center. The retaining ring is located on the uprights, and the fixing ring is engaged in the gap.

2. The pressure relief and exhaust assembly according to claim 1, characterized in that, The column is provided with a guide surface at one end near the side of the annular base. The outer diameter of the guide surface gradually increases from top to bottom, and the fixing ring is engaged with the outer periphery of the guide surface.

3. The pressure relief and venting assembly according to claim 2, characterized in that, The retaining ring is interference-fitted with the guide surface.

4. The pressure relief and venting assembly according to any one of claims 1-3, characterized in that, The outer side of the fixing ring is provided with an annular groove, and the side of the annular base is provided with an annular protrusion that cooperates with the annular groove.

5. The pressure relief and venting assembly according to claim 1, characterized in that, The first exhaust trough corresponds to the opening position between the adjacent column.

6. The pressure relief and venting assembly according to claim 5, characterized in that, The annular base is provided with a water receiving platform at the corresponding position of the breathable membrane, and the column surrounds the outside of the water receiving platform.

7. The pressure relief and venting assembly according to claim 6, characterized in that, The water receiving platform can be a planar structure or a raised structure.

8. The pressure relief and venting assembly according to claim 1, characterized in that, A support frame is provided inside the exhaust ring, and the breathable membrane is located on the support frame. The support frame is located within the space enclosed by the retaining ring.

9. The pressure relief and venting assembly according to claim 1, characterized in that, A connecting ring is provided at the top of the exhaust ring.

10. The pressure relief and venting assembly according to claim 1, characterized in that, The first exhaust groove is equipped with reinforcing ribs.

11. The pressure relief and venting assembly according to claim 1, characterized in that, The exhaust ring has a second exhaust groove at the corresponding position on the annular base.

12. The pressure relief and venting assembly according to claim 1, characterized in that, The retaining ring is provided with a plurality of positioning grooves at intervals, and the column is provided with a positioning post above the column to cooperate with the positioning grooves.

13. A bottle cap, comprising a cap body having vent holes, characterized in that, It also includes the pressure relief and venting assembly according to any one of claims 1-12, wherein the venting ring of the pressure relief and venting assembly is connected in communication with the vent hole of the cover.

14. A packaging container, comprising a container body, wherein the container body is provided with a vent, characterized in that, The container body is provided with a pressure relief and venting assembly as described in any one of claims 1-12, wherein the venting ring of the pressure relief and venting assembly is connected in communication with the venting hole of the container body.

15. A packaging container, comprising a container body, characterized in that, It also includes the bottle cap as described in claim 13, the bottle cap being disposed on the container body.

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