Coffee bean packaging dual-mode switching exhaust valve

Abstract

The invention discloses a coffee bean packaging dual-mode switching exhaust valve and relates to the technical field of one-way valves, the switching exhaust valve comprises a first base body, a supporting ring sleeve is arranged on the outer side of the first base body, a second base body with a third hole body is arranged at the upper end of the supporting ring sleeve, and a first hole body penetrating through the upper end face and the lower end face of the first base body is formed in the first base body; a valve spacer is arranged on the side face, opposite to the second base body, of the first base body, at least one first groove is formed in the side face, opposite to the second base body, of the first base body, and the first hole bodies communicate with the first grooves. The exhaust valve has the dual-mode exhaust function, the exhaust rate is adjusted, and the using effect is ensured according to using requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of one-way valves, and in particular to a dual-mode switching exhaust valve for coffee bean packaging. Background Art

[0002] Packages made of soft materials are usually used to store products to isolate them from the ambient air. Such stored products may be agricultural products, food, chemicals, etc. A common practice is to use various flexible packages that include valves, allowing air that may be trapped in the bag or gas generated by the bag's contents to exit the bag through the valve while preventing gas in the environment from entering the bag through the valve. For example, prior art EP3551542B1 provides a flexible package with a one-way pressure equalization or degassing valve and a method for manufacturing the same. The flexible package provided by this technology includes a heat seal that allows air and internal gas trapped in the package to escape through the valve while preventing fine powder, dust, and particles from reaching the valve body by trapping or collecting them in a tortuous path. Another example is prior art US11208251B2, which discloses a valve for flexible packaging having a guide device for guiding the movement of a membrane, and a space adjacent to the membrane in the housing so that a channel is formed between the first opening and the second opening when the membrane is in its open position. Due to the guide, the membrane performs a controlled movement between its closed and open positions, resulting in a well-defined opening under all conditions. Combined with the space in the housing adjacent to the membrane, this creates a relatively large flow area, allowing the package to be quickly evacuated or flushed by introducing gas.

[0003] Although the above-mentioned existing valves can generally achieve the intended purpose of exhausting trapped gas or air from a flexible package, such valves also have one or more disadvantages, such as low operating efficiency and inability to adjust the exhaust rate. Summary of the Invention

[0004] The purpose of the present invention is to provide a dual-mode switching exhaust valve for coffee bean packaging, which has a dual-mode exhaust function, can adjust the exhaust rate, and ensure the use effect according to the use requirements.

[0005] To address the aforementioned technical issues, the present invention specifically provides the following technical solution: a dual-mode switchable degassing valve for coffee bean packaging, comprising a first base, a support ring disposed on the outer side of the first base, a second base having a third hole disposed on the upper end of the support ring, the first base having a first hole extending through its upper and lower end surfaces, a valve septum disposed on a side of the first base facing the second base, and at least one first groove disposed on a side of the first base facing the second base, the first hole communicating with the first groove. The first hole is disposed toward one end of the first groove.

[0006] During use, the exhaust valve exhausts gas from the flexible package after the gas reaches the triggering condition. For example, when the internal pressure is greater than 5kPa, the internal gas pushes the valve septum open and flows toward the third hole body and is discharged, while the external gas cannot flow in the opposite direction due to the presence of the valve septum, thus achieving one-way exhaust. The solution of the present invention of opening at least one first groove on the first substrate broadens the exhaust path, allowing the gas to have more channels to choose from. After the gas enters the first hole body, it can also enter the first groove, and then push the valve septum open to be discharged. Compared with the single exhaust through hole and septum solution in the prior art, the technical solution of the present invention increases the effective area of exhaust. In this way, the exhaust efficiency can be improved, so that the one-way valve can discharge more gas per unit time, reduce the accumulation of gas in the valve, and thus improve the performance of the entire system. After the first groove is added to the first substrate, the gas can act on the valve septum more smoothly, making the valve septum more stable during the opening and closing process, and the force is more uniform, thereby improving the sealing performance between the valve septum and the first substrate, and preventing the sealing failure caused by single-point force.

[0007] The device of the present invention is applied to containers that require degassing, such as soft packaging for whole bean roasted coffee or ground roasted coffee. Such products need to be degassed to avoid affecting the quality of the internal products. Usually, in order to avoid damage, the degassing valve of the present invention needs to be arranged in the soft packaging, that is, the second substrate is arranged inside the soft packaging, and the soft packaging has a first wall surface that is in contact with the surface of the second substrate. The first wall surface has a hole body that is connected to the third hole body and also has a hole body that allows the connecting screw to enter and exit. The accompanying drawings only show a portion of the first wall surface of an exemplary soft packaging. The soft packaging is formed by one or more layers of fabric made of soft material to prevent oxygen from entering the packaging and also prevent coffee flavor components from escaping the packaging. Although the degassing valve of the present invention is described as being used for coffee packaging, it is obvious that the present invention should not be regarded as limiting any specific type of soft packaging or material forming the soft packaging.

[0008] According to one embodiment of the present invention, the valve septum is mounted in contact with the side surface of the first base, and the first groove is provided within the assembly range of the valve septum. The valve septum is further provided with a fifth aperture on the first base within the assembly range of the first base. This fifth aperture has a larger flow area, thereby expanding the flow area of airflow through the first base. The design of the fifth aperture further increases the effective exhaust area, and in conjunction with the expanded exhaust area of the first groove, this enhances the smooth opening and closing of the valve septum and reduces the probability of valve septum seal failure.

[0009] According to one embodiment of the present invention, a second hole is defined in the first base, and the valve septum has a mounting hole corresponding to the second hole. A plug-in block is inserted into the second hole and the mounting hole. The plug-in block is a rotating body with a protrusion at its upper end. When the plug-in block is inserted into the second hole and the mounting hole, the protrusion is spaced from the surface of the valve septum. This prevents the valve septum from being overly attached to the first base due to full insertion, making it difficult for gas to be discharged in different modes.

[0010] According to one embodiment of the present invention, spaced and staggered guide plates are disposed within the first groove, with a spacing between the groove wall and the guide plates. The guide plates can be positioned at various angles, such as 15°, 30°, or 45°, to each other. This design diverts and guides the airflow, improving the uniformity of the exhaust gas velocity. The guide plates are spaced along the airflow direction, forming a pressure buffer zone and ensuring smoother opening and closing of the valve septum.

[0011] According to one embodiment of the present invention, a first spring is disposed between the first and second substrates. One end of the first spring contacts the surface of the valve septum, while the other end of the first spring is in contact with or separated from the second substrate. The presence of the first spring enables switching between different exhaust modes in conjunction with the contact state of the second substrate relative to the first spring. When the first spring and second substrate are in contact, the first spring and second substrate restrict the valve septum, causing exhaust to be triggered when the internal pressure exceeds 5 kPa. When the first spring and second substrate are separated, the second substrate removes the restriction, and the triggering condition is an internal pressure of less than 1 kPa. The state of contact or separation of the other end of the first spring with the second substrate is selected by the user based on usage requirements or regional conditions. If a micro-permeation exhaust mode is desired, the other end of the first spring is controlled to separate from the second substrate.

[0012] According to one embodiment of the present invention, a third ring body and a second ring body are sequentially arranged around the side surface of the second base from the outside to the inside, and the space between the third ring body and the second ring body accommodates the end of the support ring sleeve. By controlling the length of the space between the third ring body and the second ring body to accommodate the end of the support ring sleeve, it is possible for personnel to select whether the other end of the first spring is in contact with or separated from the second base according to different usage requirements.

[0013] According to one embodiment of the present invention, a fourth hole is provided on the first base, and a connecting screw is threadedly assembled in the fourth hole. The other end of the connecting screw is connected to the second base, and the connecting screw can be displaced relative to the second base. The second base has a through circular hole that allows the connecting screw to enter and exit, and the end of the connecting screw can enter and exit the through circular hole, and the end of the connecting screw is provided with a sealing ring or sprayed with sealant to fill the gap between the connecting screw and the through circular hole to avoid displacement and shaking. On the one hand, the connecting screw can assist in stabilizing the position of the valve diaphragm on the first base, and can also calibrate the position alignment of the first base and the second base. On the other hand, whether the upper end of the connecting screw extends out of the second base serves as a basis for judging different modes. When the first spring is in contact with the second base, the distance between the second base and the first base is reduced, and the end of the connecting screw extends out of the second base, which provides a basis for judgment and is convenient for user identification.

[0014] According to one embodiment of the present invention, the first base is a rotating body structure, and the upper end of the first base has a first ring body of the same diameter as the first base, and the outer side of the first base and the outer side of the first ring body are connected to the support ring sleeve. The outer side of the first ring body has a thread, and one end of the support ring sleeve adjacent to the first ring body is a threaded hole, and the threaded hole cooperates with the thread of the first ring body. A first protrusion is arranged around the inside of the first ring body, and the first protrusion has a circular socket. On the one hand, the first protrusion is used to assist in the positioning of the valve septum during assembly. The presence of the first protrusion reduces the range of movement of the valve septum when placed on the first base, which has a moderate improvement effect on its assembly. On the other hand, the circular socket of the first protrusion can be used to place a moisture-proof agent.

[0015] According to one embodiment of the present invention, an annular extension ring is provided on the outside of the first base, which is used to enable the one-way valve of the present invention to be disassembled and installed separately in a scenario where there is a need for use. For example, a container has an installation channel and it is necessary to install the one-way valve of the present invention. By removing the one-way valve of the present invention and inserting it into the installation channel, the extension ring fills the gap between the first base and the installation channel and ensures the sealing effect. The extension ring is made of sealing rubber.

[0016] According to one embodiment of the present invention, the surface of the first substrate that contacts the valve septum is coated with silicone oil. This coating reduces friction between the first substrate and the valve septum and enhances sealing. Furthermore, silicone oil exhibits excellent chemical resistance and thermal stability, maintaining its performance in diverse operating environments. Whether operating at high or low temperatures or in corrosive media, the silicone oil applied to the valve septum maintains its effectiveness, ensuring the reliability and durability of the one-way valve.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the solution of the present invention has a dual-mode exhaust function, which can adjust the exhaust rate and ensure the use effect according to the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0019] Figure 1 Schematic diagram of the dual-mode switch exhaust valve for coffee bean packaging of the present invention;

[0020] Figure 2 Schematic diagram of the exhaust airflow when the dual-mode switching exhaust valve for coffee bean packaging of the present invention is in use;

[0021] Figure 3 This is a schematic diagram of the connection state between the second base and the connecting screw of the present invention;

[0022] Figure 4 This is a schematic diagram of a connection scheme between the second base, the second ring body and the third ring body of the present invention;

[0023] Figure 5 Schematic diagram of the position of the first hole on the first substrate of the present invention;

[0024] Figure 6 This is a schematic diagram of the assembly of the first base body and the valve septum of the present invention;

[0025] Figure 7 It is a schematic diagram of the assembly scheme of the plug-in block and the second hole body of the present invention;

[0026] Figure 8 A schematic diagram of a first groove and a guide plate on a first substrate of the present invention;

[0027] Figure 9 This is a schematic diagram of a solution in which a fifth hole is provided on the first substrate of the present invention;

[0028] Figure 10 This is a schematic diagram of a coffee bean packaging dual-mode switching exhaust valve with a built-in auxiliary ring solution of the present invention;

[0029] Figure 11 This is a schematic diagram of the auxiliary ring solution of the present invention;

[0030] Figure 12 This is a schematic diagram of the dual-mode switching exhaust valve for coffee bean packaging of the present invention being applied to the lid of the first container.

[0031] Explanation of the accompanying drawings: 10. First base; 11. First ring body; 12. First groove; 13. First hole body; 14. Second hole body; 15. Extension ring; 16. Plug-in block; 17. First protrusion; 18. Fourth hole body; 19. Guide plate; 110. Fifth hole body; 20. Second base; 21. Third hole body; 22. Second ring body; 23. Third ring body; 30. Connecting screw; 40. First spring; 50. Valve septum; 60. First wall; 70. Auxiliary ring; 71. Sixth hole body; 80. First container; 81. Cover body; 90. Support ring sleeve. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The following first describes the concepts involved in this application with reference to the accompanying drawings. It should be noted that the following description of each concept is intended only to make the content of this application easier to understand and does not limit the scope of protection of this application. At the same time, the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The following detailed description of this application will be made with reference to the accompanying drawings and in conjunction with the embodiments.

[0034] Example 1:

[0035] Attached picture Figure 1 -Attached Figure 9 As shown, the dual-mode switching degassing valve for coffee bean packaging includes a first base 10, a support ring 90 is provided on the outer side of the first base 10, and a second base 20 having a third hole 21 is provided on the upper end of the support ring 90. The first base 10 is provided with a first hole 13 extending through the upper and lower end surfaces thereof. A valve septum 50 is provided on the side of the first base 10 facing the second base 20. At least one first groove 12 is provided on the side of the first base 10 facing the second base 20, and the first hole 13 is connected to the first groove 12. The first hole 13 is provided toward one end of the first groove 12.

[0036] During use, the exhaust valve exhausts gas from the soft package after reaching the triggering condition. For example, when the internal pressure is greater than 5kPa, the internal gas pushes the valve septum 50 to flow toward the third hole body 21 and is exhausted. However, the external gas cannot flow in the opposite direction due to the presence of the valve septum 50, thus achieving one-way exhaust. The solution of the present invention of opening at least one first groove 12 on the first substrate 10 broadens the exhaust path, allowing the gas to have more channels to choose from. After the gas enters the first hole body 13, it can also enter the first groove 12, and then push the valve septum 50 to be exhausted. Compared with the single exhaust through hole combined with the septum solution in the prior art, the technical solution of the present invention increases the effective exhaust area. This can improve the exhaust efficiency, allowing the one-way valve to discharge more gas per unit time, reducing the accumulation of gas in the valve, and thus improving the performance of the entire system. After the first groove 12 is added to the first base 10, the gas can act more smoothly on the valve septum 50, making the valve septum 50 more stable during the opening and closing process and the force more uniform, thereby improving the sealing performance between the valve septum 50 and the first base 10, and preventing sealing failure caused by single-point force.

[0037] The device of the present invention is applied to containers that need to be degassed, such as soft packaging for whole bean roasted coffee or ground roasted coffee. Such products need to be degassed to avoid affecting the quality of the internal products. Usually, in order to avoid damage, the degassing valve of the present invention needs to be set inside the soft packaging, that is, the second base 20 is set inside the soft packaging, and the soft packaging has a first wall 60 that is in contact with the surface of the second base 20. The first wall 60 has a hole body connected to the third hole body 21 and also has a hole body that allows the connecting screw 30 to enter and exit. Figure 2 Only a portion of the first wall 60 of an exemplary soft package is shown, and the soft package is formed by one or more layers of fabric made of soft material to prevent oxygen from entering the package while also preventing coffee flavor components from escaping the package. Although the degassing valve of the present invention is described for coffee packaging, it is clear that the present invention should not be considered as limited to any specific type of soft package or material forming the soft package.

[0038] The valve septum 50 is positioned flush against the side of the first base 10, with the first groove 12 defined within the assembly range of the valve septum 50. A fifth aperture 110 is also defined within the assembly range of the first base 10. This fifth aperture 110 has a large flow area, expanding the area of airflow through the first base 10. The design of the fifth aperture 110 further increases the effective exhaust area, which, combined with the expanded exhaust area of the first groove 12, ensures smooth opening and closing of the valve septum 50 and reduces the likelihood of seal failure.

[0039] The first base 10 defines a second hole 14. The valve septum 50 has a mounting hole corresponding to the second hole 14. A plug-in block 16 is inserted into the second hole 14 and the mounting hole. The plug-in block 16 is a rotating structure with a protrusion at its upper end. When the plug-in block 16 is inserted into the second hole 14 and the mounting hole, this protrusion is spaced from the surface of the valve septum 50. This prevents the valve septum 50 from being overly attached to the first base 10 when fully inserted, making it difficult for gas to be discharged in different modes.

[0040] Guide plates 19 are arranged in a staggered and spaced relationship within the first groove 12. A distance is provided between the groove wall of the first groove 12 and the guide plates 19. The guide plates 19 can be arranged at various angles, such as 15°, 30°, or 45°, to each other. This design diverts and guides the airflow, improving the uniformity of the exhaust gas velocity. The guide plates 19 are spaced along the airflow direction to form a pressure buffer zone, ensuring smoother opening and closing of the valve septum 50.

[0041] A first spring 40 is positioned between the first and second substrates 10 and 20. One end of the first spring 40 contacts the surface of the valve septum 50, while the other end of the first spring 40 is in contact with or separated from the second substrate 20. The presence of the first spring 40 enables switching between different exhaust modes based on the contact state of the second substrate 20 relative to the first spring 40. When the first spring 40 and second substrate 20 are in contact, the first spring 40 and the second substrate 20 restrict the valve septum 50, triggering exhaust only when the internal pressure exceeds 5 kPa. When the first spring 40 and second substrate 20 are separated, the restriction is removed by the second substrate 20, triggering only when the internal pressure is less than 1 kPa. The contact or separation state of the other end of the first spring 40 with the second substrate 20 is selected based on user needs or regional conditions. For example, if micro-permeation exhaust mode is desired, the other end of the first spring 40 is controlled to separate from the second substrate 20.

[0042] The side surface of the second base 20 is sequentially surrounded by a third ring body 23 and a second ring body 22 from the outside to the inside. The space between the third ring body 23 and the second ring body 22 accommodates the end of the support ring sleeve 90. By controlling the length of the space between the third ring body 23 and the second ring body 22 to accommodate the end of the support ring sleeve 90, it is used to cooperate with personnel to select whether the other end of the first spring 40 is in contact with or separated from the second base 20 according to different usage requirements.

[0043] The first base 10 is provided with a fourth hole 18, into which a connecting screw 30 is internally threaded. The other end of the connecting screw 30 is connected to the second base 20, and the connecting screw 30 is movable relative to the second base 20. The second base 20 has a through-hole that allows the connecting screw 30 to enter and exit. The end of the connecting screw 30 can enter and exit the through-hole, and a sealing ring or sealant is applied to the end of the connecting screw 30 to fill the gap between the connecting screw 30 and the through-hole to prevent displacement and shaking. On the one hand, the connecting screw 30 can assist in stabilizing the position of the valve diaphragm 50 on the first base 10, and can also calibrate the position alignment between the first base 10 and the second base 20. On the other hand, whether the upper end of the connecting screw 30 extends out of the second base 20 serves as a basis for judging different modes. When the first spring 40 is in contact with the second base 20, the distance between the second base 20 and the first base 10 is reduced, and the end of the connecting screw 30 extends out of the second base 20, which provides a basis for judgment and is convenient for user identification.

[0044] The first base 10 is a rotating body structure. The upper end of the first base 10 has a first ring body 11 of the same diameter as the first base 10. The outer sides of the first base 10 and the outer sides of the first ring body 11 are connected to the support ring sleeve 90. The outer side of the first ring body 11 has threads, and one end of the support ring sleeve 90 adjacent to the first ring body 11 has a threaded hole, which mates with the threads of the first ring body 11. A first protrusion 17 is arranged around the inner side of the first ring body 11, and the first protrusion 17 has a circular socket. On the one hand, the first protrusion 17 is used to assist in the positioning of the valve septum 50 during assembly. The presence of the first protrusion 17 reduces the range of movement of the valve septum 50 when placed on the first base 10, which has a proper assembly effect. On the other hand, the circular socket of the first protrusion 17 can be used to insert a moisture-proof agent.

[0045] An annular extension ring 15 is provided on the outside of the first base 10, which is used to enable the one-way valve of the present invention to be disassembled and installed separately in a scenario where it is needed. For example, a container has an installation channel and it needs to be equipped with the one-way valve of the present invention. By removing the one-way valve of the present invention and inserting it into the installation channel, the extension ring 15 fills the gap between the first base 10 and the installation channel and ensures the sealing effect. The extension ring 15 is made of sealing rubber.

[0046] The contact surface of the first substrate 10 with the septum 50 is coated with silicone oil. This reduces friction between the two and enhances sealing. Furthermore, silicone oil exhibits excellent chemical resistance and thermal stability, maintaining its performance in diverse operating environments. Whether operating at high or low temperatures or in corrosive media, the silicone oil applied to the septum maintains its effectiveness, ensuring the reliability and durability of the one-way valve.

[0047] Example 2:

[0048] See the instructions attached Figure 2 , Attachment Figure 4 As shown, this embodiment is a further optimization scheme based on embodiment 1, in which a portion of the inner wall of the third ring body 23 has a threaded structure, and the outer wall of the support ring sleeve 90 has a thread that can be screwed together with the threaded structure of the third ring body 23.

[0049] This solution is applied to: When the dual-mode switching exhaust valve of the coffee bean packaging of the present invention is arranged outside the first container, such as Figure 12 In the scenario shown, the first container 80 is a container for storing objects. The first container 80 is generally used to store coffee beans. Its end is sealed by a cover 81. A through hole is provided in the center of the cover 81. The through hole can be used to place the dual-mode switching exhaust valve for coffee bean packaging of the present invention. The specific connection method is to directly insert the dual-mode switching exhaust valve for coffee bean packaging of the present invention into the through hole in the middle of the cover 81. The extension ring 15 can contact the hole wall of the through hole of the cover 81. The extension ring 15 is made of sealing rubber and plays a plug-in sealing role. It can also realize the rapid disassembly and assembly of the dual-mode switching exhaust valve for coffee bean packaging of the present invention on the cover 81.

[0050] When it is necessary to switch the exhaust mode, the user can manually rotate the second base 20 and the third ring body 23 to displace the second base 20 relative to the support ring sleeve 90. Of course, while the second base 20 rotates, it is synchronously displaced up and down relative to the connecting screw 30 at the center, so that the distance between the second base 20 and the first base 10 is reduced, so that the side of the second base 20 abuts against the first spring 40, and the other end of the first spring 40 contacts the valve septum 50. In this mode, the exhaust trigger condition inside the first container 80 requires an internal pressure of >5kPa to automatically open. In this mode, the end of the connecting screw 30 is partially exposed outside the second base 20. People can use this feature to judge the change of mode. In order to improve the recognition effect, the part of the connecting screw 30 exposed on the second base 20 is preferably painted with a striking color, such as red.

[0051] To switch to the second exhaust mode, the second base 20 and third ring 23 are reversed, increasing the distance between the second base 20 and the first base 10. This eliminates the abutment between the second base 20 and the first spring 40. In this mode, the trigger condition for exhausting the interior of the first container 80 is an internal pressure less than 1 kPa. This is a micro-permeation external exhaust mode suitable for low-altitude areas. In this mode, the prominent end of the connecting screw 30 is housed in the through-hole of the second base 20.

[0052] Furthermore, the outer wall of the support ring sleeve 90 has a hemispherical protrusion, and the outer wall of the second ring body 22 has a hemispherical groove corresponding to the hemispherical protrusion on the outer wall of the support ring sleeve 90, thereby improving the tight assembly effect of the two. In this solution, there is no need to set a threaded structure on the third ring body 23, and the corresponding outer wall of the support ring sleeve 90 does not need a threaded feature. The dual-mode switching exhaust valve of the coffee bean packaging in this solution can be used inside the soft package, so that the dual-mode switching exhaust valve of the coffee bean packaging is not exposed. The replacement of different exhaust modes is achieved by pressing. If a micro-permeation external exhaust mode is required, that is, the trigger condition is an internal pressure of less than 1kPa, the connecting screw 30 is manually pressed to expose the part of the second base 20, and the hand is pinched to the edge of the second base 20 of the soft package and the third ring body 23. Such force can achieve the separation of the second ring body 22 and the support ring sleeve 90.

[0053] Example 3:

[0054] See the instructions attached Figure 1 , Attachment Figure 2 , Attachment Figure 10 , Attachment Figure 11 As shown, this embodiment is a further optimization scheme based on embodiment 1, in which an auxiliary ring 70 is placed in the support ring sleeve 90, and a sixth hole body 71 is arranged around the auxiliary ring 70. The auxiliary ring 70 on the side of the sixth hole body 71 has a protruding part, and a moisture-proof agent can be placed inside the sixth hole body 71 of the auxiliary ring 70 to prevent external water vapor from flowing back into the first hole body 13.

[0055] It should also be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and do not impose any form of limitation on the implementation methods of the technology of the present invention. Any person skilled in the art may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0057] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A dual-mode switching exhaust valve for coffee bean packaging, comprising a first base (10), a support ring sleeve (90) provided on the outer side of the first base (10), a second base (20) having a third hole (21) provided on the upper end of the support ring sleeve (90), a first hole (13) penetrating the upper and lower end surfaces of the first base (10), a valve septum (50) provided on a side of the first base (10) opposite to the second base (20), characterized in that: At least one first groove (12) is provided on a side surface of the first base body (10) opposite to the second base body (20), and the first hole (13) is communicated with the first groove (12).

2. The dual-mode switching exhaust valve for coffee bean packaging according to claim 1, characterized in that: The valve septum (50) is arranged in contact with the side surface of the first base (10), and the first groove (12) is arranged within the assembly range of the valve septum (50) in the first base (10).

3. The dual-mode switching exhaust valve for coffee bean packaging according to claim 1, characterized in that: A second hole (14) is provided on the first base (10), the valve septum (50) has a mounting through hole corresponding to the second hole (14), and a plug-in block (16) is inserted into the second hole (14) and the mounting through hole.

4. The dual-mode switching exhaust valve for coffee bean packaging according to claim 1, characterized in that: Guide plates (19) are arranged in a staggered manner and at intervals in the first groove (12), and a spacing distance exists between the groove wall surface of the first groove (12) and the guide plates (19).

5. The dual-mode switching exhaust valve for coffee bean packaging according to claim 1, characterized in that: A first spring (40) is provided between the first base (10) and the second base (20), one end of the first spring (40) contacts the surface of the valve septum (50), and the other end of the first spring (40) contacts or separates from the second base (20).

6. The dual-mode switching exhaust valve for coffee bean packaging according to claim 5, characterized in that: The side surface of the second base body (20) is sequentially surrounded by a third ring body (23) and a second ring body (22) from the outside to the inside, and the space between the third ring body (23) and the second ring body (22) accommodates the end of the support ring sleeve (90).

7. The dual-mode switching exhaust valve for coffee bean packaging according to claim 1, characterized in that: A fourth hole (18) is provided on the first base (10), and a connecting screw (30) is assembled through the internal thread of the fourth hole (18). The other end of the connecting screw (30) is connected to the second base (20), and the connecting screw (30) can be displaced relative to the second base (20).

8. The dual-mode switching exhaust valve for coffee bean packaging according to claim 1, characterized in that: The first base (10) is a rotating body structure. The upper end of the first base (10) has a first ring body (11) with the same diameter as the first base (10). The outer side of the first base (10) and the outer side of the first ring body (11) are connected to the support ring sleeve (90).

9. The dual-mode switching exhaust valve for coffee bean packaging according to claim 1, characterized in that: The outer side of the first base body (10) is provided with an annular extension ring (15).

10. The dual-mode switching exhaust valve for coffee bean packaging according to claim 1, characterized in that: The surface of the first substrate (10) in contact with the valve septum (50) is coated with silicone oil.

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