Exhaust valve for container cover

Abstract

The utility model relates to the field of daily chemical product containers, in particular to an exhaust valve for a container cover, the container cover is a cover body covering a container, and the exhaust valve is arranged on the cover body and used for automatically releasing pressure when the cover body seals the container. The exhaust valve comprises an exhaust hole and a patch, when the pressure in the container is larger than the pressure outside the container, the patch is partially separated from the cover body along the exhaust hole to form an exhaust channel for communicating the exhaust hole with the outside, and when the pressure in the container is smaller than or equal to the pressure outside the container, the patch is tightly attached to the exhaust hole and the cover body, and the exhaust channel is closed; the problem that the sealing performance of a container cover is affected due to the fact that pressure is prone to being accumulated in the transportation process of a container is solved. Meanwhile, the accumulation gradient of the solid particles is changed, and the physical and chemical state stability of the solid particles is influenced; air pressure accumulated in the transportation process of the container can be released in time, so that the good sealing performance of the container cover is kept; and the solid particles are kept stable, so that the effect of stable state of the solid particles in the container is achieved.

Description

Technical Field

[0001] The utility model relates to the field of daily chemical product containers, and more specifically, to an exhaust valve for a container cover. Background Art

[0002] After daily household chemicals are packaged in containers, they are susceptible to the generation of gases due to factors such as temperature during storage and transportation. Accumulation of gas can be destructive, causing the packaging to bulge, rupture, and leak. Furthermore, when the container lid is designed to a specific shape based on the accumulation gradient of the solid particles within the container, the stability of the particle surface shape, size, and roughness directly impacts the resulting accumulation gradient. Therefore, to ensure consistent quantitative capture with the lid, the particle surface shape, size, and roughness must also remain stable during transportation. This necessitates maintaining a sealed package to prevent moisture and agglomeration of the contents.

[0003] How to design an exhaust valve with an automatic pressure relief function on the container so that the gas pressure generated by the solid particles in the container can be released in time when it exceeds the external pressure without the need for complex device design, while maintaining the reverse sealing function of the container to prevent external gas from flowing back into the container and keeping its physical state stable, is an urgent problem to be solved in this field. Utility Model Content

[0004] The present utility model aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provides an exhaust valve for a container lid, which is used to solve the problem that a container containing solid particles is prone to pressure accumulation during transportation or when the container collides, causing the packaging to swell and rupture, thereby affecting the sealing of the container lid; at the same time, when the solid particles are in a high-pressure state for a long time, the shape, size, and roughness of the particle surface are affected, and they are easily affected by moisture and agglomeration, resulting in a change in the stacking slope of the solid particles, thereby affecting the stability of the physical and chemical state of the solid particles in the container.

[0005] The technical solution adopted by the present invention is to provide an exhaust valve for a container lid, wherein the container lid is a cover body arranged on the container, and the cover body is provided with an exhaust valve for automatically releasing pressure when the cover body closes the container; the exhaust valve includes an exhaust hole and a patch, when the pressure inside the container is greater than that outside the container, the patch partially separates from the cover body along the exhaust hole to form an exhaust channel connecting the exhaust hole to the outside, and when the pressure inside the container is less than or equal to that outside the container, the patch clings to the exhaust hole and the cover body, and the exhaust channel is closed.

[0006] It is beneficial to realize the automatic pressure relief function of various container covers such as screw caps and flip caps through the exhaust valve on the cover, so that the gas generated by the solid particles in the container during transportation can be discharged along the exhaust valve autonomously, avoiding the gas causing the container to swell and leak, and also avoiding manual opening of the cover to assist in pressure relief, which causes the shape, size and roughness of the solid particles in the container to repeatedly contact the outside world and affect its stacking slope; it is beneficial to achieve the effect of discharging the gas in the container outward through the combination of the exhaust hole and the patch, while the gas outside the container cannot enter inward.

[0007] Furthermore, the exhaust hole comprises at least one, which is provided on the plane or cylindrical surface of the cover body and communicates with the interior of the container; the patch is a flexible sheet, which is pasted on the outside of the cover body and completely covers the exhaust hole.

[0008] The adhesiveness and easy separation of the self-adhesive coating can help the flexible patch to be partially covered on the cover without exhaust, thereby reducing the force required for the patch to be separated from the exhaust hole and reducing the design and manufacturing cost of the patch.

[0009] Furthermore, the patch eccentrically covers the exhaust hole.

[0010] When the patch is eccentrically covered on the exhaust hole, the gas is easily discharged from the weak side and the patch is kept intact on the cover.

[0011] Furthermore, the cover body includes a main cover, an outward-expanding connecting seat and a flip cover, the outward-expanding connecting seat is connected to the bottom of the main cover through a side wall, the flip cover is connected to the main cover through a hinge, the hinge is located on one side of the flip cover, and is used to guide the flip cover to perform a one-way folding action relative to the main cover, the flip cover also includes a closing plug, which is used to close the discharge port of the container; the exhaust valve is arranged on the closing plug.

[0012] It is beneficial to pre-store solid particles in the container through the main cover, intercept a certain amount of solid particles through the outward expansion connecting seat, so as to realize quantitative material removal of the container cover; the flip cover makes it more convenient to open the cover body, the hinge makes the flip cover flip up to one side of the container, the closing plug makes the flip cover seal the container, and the exhaust valve releases the high pressure in the container with the flip cover.

[0013] Furthermore, the closing plug includes a circular wall protruding from the inner surface of the flip cover, the circular wall forms a cavity on the flip cover, the discharge port is enclosed in the cavity, and the exhaust hole connects the cavity to the outside of the container cover for pressure relief.

[0014] It is beneficial to form a cavity with a covering effect through the circular wall, thereby strengthening the sealing of the container discharge port; the exhaust hole is set in the cavity so that the pressure generated by the daily chemical product itself in the closed container can be discharged.

[0015] Furthermore, the exhaust hole is provided on the flip cover, penetrating from the inner surface of the flip cover to the outer surface of the flip cover.

[0016] The exhaust hole is arranged on the flip cover, so that the gas generated in the closed container is guided to vertically rush upward to open the patch and overflow.

[0017] Furthermore, the exhaust holes include a plurality of holes that are evenly distributed on the circular wall surface and penetrate the outer surface of the flip cover from the side surface of the circular wall surface.

[0018] By distributing the exhaust holes on the circular wall surface, it is beneficial to guide the gas generated in the closed container along the side wall into the gas diffusion channel of the circular wall surface and then overflow upward.

[0019] Furthermore, a longitudinal partition is provided in the main cover, and an inclined partition is provided in the outward expansion connecting seat. The bottom of the inclined partition and the side wall form a buffer port, the top of the inclined partition and the side wall form a pre-storage port, the bottom of the longitudinal partition and the top of the inclined partition form a material blocking port, and the top of the longitudinal partition and the side wall form a discharge port; the exhaust hole is located above the discharge port, and the patch is located above the exhaust hole.

[0020] It is beneficial to divide the space of the main cover by the longitudinal partition and to divide the space of the outward-expanding connecting seat by the inclined partition, so as to achieve the effect of quantitative interception of solid particles; the exhaust hole is arranged above the discharge port, so that the gas generated by the solid particles can be discharged along the exhaust hole in time. At the same time, it is difficult for the external gas to enter the container from the discharge port in the opposite direction, thereby ensuring the airtightness of the main cover and avoiding changes in the stacking slope of the solid particles, which will affect the quantitative interception effect of the main cover designed according to the stacking slope.

[0021] Furthermore, the overlapping distance between the longitudinal partition and the inclined partition in the vertical direction is b, and the gap distance between the pre-storage port and the buffer port in the horizontal direction is a, and b≥a.

[0022] It is beneficial to limit the flow path and flow speed of solid particles by setting the overlapping distance b, thereby preventing solid particles from flowing out of order and directly overflowing; by setting the gap distance a, when the tilt angle of the container is less than 45°, the solid particles are blocked outside; through the numerical relationship between b and a, the solid particles are blocked when the tilt angle of the container is not enough, and the quantitative interception effect is achieved when the tilt angle is sufficient.

[0023] Furthermore, the included angle between the inclined partition and the side wall is A1, 15°<A1<45°, and the included angle between the buffer partition and the side wall is A2, 105°<A2<135°.

[0024] It is beneficial to form a specific shape of the outward-expanding connecting seat and the inclined partition through a specific angle between the inclined partition and the side wall, thereby controlling the volume holding capacity according to the diameter of the solid particles. By forming a specific shape of the outward-expanding connecting seat and the side wall through a specific angle between the buffer partition and the side wall, the effect of blocking solid particles is achieved when the tilt angle of the container is not enough.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the air pressure accumulated in the container containing solid particles during transportation can be released in time, thereby maintaining the good sealing of the container lid; and the shape, size and roughness of the surface of the solid particles remain stable, so that the stacking slope of the solid particles does not change easily, thereby achieving the effect of stabilizing the state of the solid particles in the container. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the container cover and container installation of the utility model.

[0027] Figure 2 This is a cross-sectional view of the container cover structure of the present utility model.

[0028] Figure 3 It is a partially enlarged schematic diagram of a preferred embodiment of the exhaust valve of the present utility model.

[0029] Figure 4 This is a schematic diagram of the exhaust state of a preferred embodiment of the exhaust valve of the present invention.

[0030] Figure 5 This is a schematic diagram of the return air state of a preferred embodiment of the exhaust valve of the present utility model.

[0031] Figure 6 This is a partially enlarged schematic diagram of another preferred embodiment of the exhaust valve of the present invention.

[0032] Figure 7 This is a schematic diagram of the exhaust state of another preferred embodiment of the exhaust valve of the present invention.

[0033] Figure 8 This is a schematic diagram of the return air state of another preferred embodiment of the exhaust valve of the present invention.

[0034] Figure 9 This is a schematic diagram of the stacking of the overlapping distance b and the gap distance a at an inclined angle of 45° in the present invention.

[0035] Figure 10 This is a schematic diagram of another preferred embodiment of the buffer partition of the present utility model.

[0036] Explanation of the accompanying drawings: container 10, buffer zone 20, pre-storage zone 21, quantitative zone 22, discharge zone 23, curved wall 231, flip cover 24, closing plug 241, material blocking port 251, pre-storage port 252, inclined partition 26, buffer partition 27, main cover 28, longitudinal partition 281, outward expansion connecting seat 29, top wall 291, side wall 292, bottom wall 293, surrounding wall 294, exhaust hole 2411, circular wall 2412, patch 2413. DETAILED DESCRIPTION

[0037] The drawings in this utility model are for illustrative purposes only and are not to be construed as limiting the scope of this utility model. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the products. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0038] Example 1

[0039] like Figure 1-9 As shown, this embodiment provides an exhaust valve for a container lid, wherein the container lid is a cover body arranged on the container 10, and the closing plug 241 is provided with an exhaust valve for automatic pressure relief when the container 10 is closed; the exhaust valve includes an exhaust hole 2411 and a patch 2413, when the pressure inside the container 10 is greater than that outside the container 10, the patch 2413 partially separates from the cover body along the exhaust hole, forming an exhaust channel connecting the exhaust hole to the outside, when the pressure inside the container 10 is less than or equal to that outside the container 10, the patch 2413 is tightly attached to the exhaust hole 2411 and the cover body, and the exhaust channel is closed.

[0040] In this embodiment, the exhaust hole 2411 serves as a ventilation channel, and the patch 2413 serves as a one-way baffle. When the exhaust valve is in the air outlet state, the patch 2413 is pushed open by the pressure inside the container 10 and bulges outward from the container 10; when the exhaust valve is in the air return state, the patch 2413 is squeezed by the pressure outside the container 10 and recessed into the container 10.

[0041] In this embodiment, the exhaust valve on the closing plug 241 acts as a one-way valve that only allows air to flow out but not in. It discharges the gas generated in the container 10 while maintaining the good airtightness of the container 10, thereby preventing the solid particles from being in a high-pressure environment for a long time during transportation and affecting their physical state, that is, the size, shape, and roughness of the surface of the solid particles change, thereby changing the stacking slope of the solid particles, and affecting the physical and chemical stability of the solid particles in the container.

[0042] In this embodiment, the longitudinal partition 281 and the inclined partition 26 divide the lid into a first space, a second space, a third space, and a fourth space. The first space is a buffer zone 20, the second space is a pre-storage zone 21, the third space is a quantitative zone 22, and the fourth space is a discharge zone 23. When the user lifts the container 10 with one hand for the first time and tilts it, solid particles enter the buffer zone 20 through the buffer port. The buffer zone 20 then fills the pre-storage zone 21 in an orderly manner. When the user returns the container 10 to a static state, solid particles enter the quantitative zone 22 from the pre-storage zone 21 through the blocking port 251. When the user lifts the container 10 with one hand for a second time and tilts it, solid particles enter the discharge zone 23 from the quantitative zone 22 and are poured out of the lid through the discharge port. This embodiment utilizes two cavities within the lid body, namely the main cover 28 and the outward-expanding connector 29, to ensure that the same volume of solid particles within the bottle is retained in the quantitative zone 22 of the third space each time by pouring out the solid particles, thereby accurately obtaining the solid particle volume for the next pouring. The capacity of the quantitative region 22 determines the basic quantitative value.

[0043] In this embodiment, the sealing method of the discharge port of the flip cover 24 is a flip cover 24 with a hinge, and a closing plug 241 is provided at the position corresponding to the discharge port. The hinge is provided on the right side of the main cover 28, that is, the end away from the discharge port. When pouring in actual use, the opened flip cover 24 echoes the discharge port up and down, so that the discharge port is naturally at the bottom, and at the same time prompts the user the correct method of use.

[0044] There is at least one exhaust hole, which is arranged on the plane or cylindrical surface of the cover and is connected to the inside of the container; the patch 2413 is a flexible sheet, which is pasted on the outside of the cover and completely covers the exhaust hole 2411.

[0045] In this embodiment, the patch 2413 is a self-adhesive label or is pasted on the outside of the cover body through a flexible sheet with a self-adhesive coating. When the air pressure in the container 10 reaches a certain value, the gas can break through part of the label 2413 and flow out of the container 10 to achieve a pressure relief effect; when the air pressure in the container 10 drops to a certain value, the label 2413 returns to normal and sticks tightly around the exhaust hole 2411, and the convection of gas inside and outside the container 10 stops; or when negative pressure is generated in the container 10, the label 2413 is further stuck around the exhaust hole 2411 to prevent gas from entering the container 10, thereby ensuring that the solid particles in the container 10 are not damp or contaminated.

[0046] The patch 2413 eccentrically covers the exhaust hole 2411 .

[0047] In this embodiment, the patch 2413 is a circular patch, the center of which does not overlap with the center of the exhaust hole 2411 , and the position where it covers the center of the exhaust hole 2411 is close to the edge of the patch 2413 .

[0048] The cover body includes a main cover 28, an outward-expanding connecting seat 29 and a flip cover 24. The outward-expanding connecting seat 29 is connected to the bottom of the main cover 28 through a side wall 292. The flip cover 24 is connected to the main cover 28 through a hinge. The hinge is located on one side of the flip cover 24 and is used to guide the flip cover 24 to perform a one-way folding action relative to the main cover 28. The flip cover 24 also includes a closing plug 241 for closing the discharge port of the container; the exhaust valve is provided on the closing plug.

[0049] In this embodiment, the exhaust valve may also be provided on a cover body with a flip cover.

[0050] The closing plug 241 includes a circular wall surface 2412 protruding from the inner surface of the flip cover 24. The circular wall surface 2412 forms a cavity on the flip cover 24. The discharge port is enclosed in the cavity. The exhaust hole 2411 connects the cavity to the outside of the container cover for pressure relief.

[0051] In this embodiment, the cavity formed by the circular wall 2412 on the flip cover 24 is cylindrical, which covers the circular discharge port inside, thereby strengthening the sealing of the container 10. The exhaust hole 2411 is in the cavity, and the gas generated is guided to overflow along the exhaust hole 2411, so that the container 10 maintains a stable pressure state and avoids changes in the physical state of the solid particles.

[0052] The exhaust hole 2411 is provided on the flip cover 24 and penetrates from the inner surface of the flip cover 24 to the outer surface of the flip cover 24 .

[0053] In this embodiment, the cavity is an open cavity surrounded by a circular wall 2412 and a flip cover 24, the opening of which is in contact with the discharge port, and the bottom surface is the flip cover 24. The exhaust hole 2411 is a circular hole penetrating the flip cover 24 and arranged at the center of the cavity.

[0054] The exhaust holes 2411 include a plurality of holes evenly distributed on the circular wall 2412 , and penetrate the outer surface of the flip cover 24 from the side of the circular wall 2412 .

[0055] In this embodiment, the exhaust holes 2411 include a plurality of holes penetrating the side and bottom surfaces of the circular wall 2412 , such that each exhaust hole 2411 is L-shaped in the cross section of the container cover.

[0056] A longitudinal partition 281 is provided in the main cover 28, and an inclined partition 26 is provided in the outward expansion connecting seat 29. The bottom of the inclined partition 26 and the side wall 292 form a buffer port, and the top of the inclined partition 26 and the side wall 292 form a pre-storage port 252. The bottom of the longitudinal partition 281 and the top of the inclined partition 26 form a material blocking port 251, and the top of the longitudinal partition 281 and the side wall 292 form a discharge port; the exhaust hole is located above the discharge port, and the patch is located above the exhaust hole.

[0057] In this embodiment, the main cover is used to quantitatively intercept solid particles. If the sealing performance of the main cover is poor, the surface morphology, size, and roughness of the solid particles in the container will change, thereby causing the stacking slope to change, further affecting the quantitative effect of the main cover designed based on the specific stacking slope calculation.

[0058] In this embodiment, when the container 10 is placed vertically and no gas is generated within the container 10, the longitudinal partitions 281 and the inclined partitions 26 are used to divide the space within the main cover 28, so that the outside air can only have limited contact with the solid particles after passing through the multiple layers of space, thereby maintaining the stability of the physical and chemical state of the solid particles within the closed container 10. When the container 10 is placed vertically and gas is generated within the container 10, the gas reaches the discharge port through the buffer port, the pre-storage port 252, and the material blocking port 251, and is then discharged through the exhaust hole 2411 above the discharge port. When the container 10 is tilted and inverted, some of the solid particles are intercepted outside the buffer port after entering the main cover 28 from the container 10, and some are reserved in the main cover 28 before entering the intercepting port 251 after entering the buffer port. When the container 10 is placed vertically, some of the reserved solid particles return to the container 10, and some are intercepted by the intercepting port 251. When the container 10 is tilted and inverted for the second time, the solid particles intercepted by the intercepting port 251 leave through the discharge port, and the gas generated in the container 10 is discharged through the exhaust hole 2411 above the discharge port as the container 10 tilts.

[0059] The overlapping distance between the longitudinal partition 281 and the inclined partition 26 in the vertical direction is b, and the gap distance between the pre-storage port 252 and the buffer port in the horizontal direction is a, b≥a.

[0060] In this embodiment, the longitudinal partition 281 is fixed perpendicular to the bottle mouth direction of the main cover. When the container 10 is tilted, the tilt angle of the longitudinal partition 281 is consistent with the tilt angle of the container 10; the gap distance a is used to prevent solid particles from entering the second space. When the tilt angle of the container 10 is less than 45°, most of the solid particles are blocked in the first space and cannot fill the second space, thereby avoiding accidental interception of solid particles due to non-human controlled tilting; when the tilt angle of the container 10 exceeds 45°, the solid particles can flow into the second space through the first space; the overlapping distance b is used to limit the solid particles from entering the third space. When the tilt angle of the container 10 is close to 45°, the filling position of the solid particles in the second space will not exceed the overlapping distance b, thereby preventing them from entering the third space, thereby achieving quantitative interception in the third space when the container 10 is straightened.

[0061] The main cover 28 also includes a top wall 291 and a curved wall 231 connected between the side wall 292 and the longitudinal partition 281. The top wall 291 is used to close the top of the cover body, and the curved wall 231 is used for discharging from the discharge port; the outward expansion connecting seat 29 also includes a surrounding wall 294 extending from the side wall 292 to the inside of the container 10, a bottom wall 293 and a buffer partition 27 connected to the surrounding wall 294, the bottom wall 293 is used to close the bottom of the cover body, and the buffer partition 27 is inclined upward or downward from the surrounding wall 294 for buffering the buffer port.

[0062] In this embodiment, the side wall 292 is a cylindrical wall, the top wall 291 is an approximately semicircular wall, the longitudinal partition 281 is a vertical plate, the curved wall 231 is a bucket-shaped wall with a smoothly reduced diameter, the discharge port is circular, the surrounding wall 294 is a cylindrical annular wall, the bottom wall 293 is a semicircular wall, the buffer partition 27 is an approximately trapezoidal wall with short sides and curved sides, and the inclined partition 26 is an approximately trapezoidal wall with curved sides.

[0063] In this embodiment, a discharge port is provided on the upper portion of the discharge channel of the main cover 28 and is a circular outlet. The discharge channel is smoothly connected to the circular outlet through a funnel-shaped curved surface, namely, a curved wall 231 .

[0064] In this embodiment, the buffer partition 27 is inclined downward from the surrounding wall 294. When the container 10 is tilted to 45°, the solid particles in the container 10 quickly form an accumulation zone between the side wall 292 and the buffer partition 27. Together with the accumulation zone formed between the side wall 292, the buffer partition 27, and the inclined partition 26, the solid particles in the container 10 form an accumulation zone. When the container 10 is tilted at an angle greater than 45°, the solid particles in the container 10 are no longer squeezed by other solid particles in the container 10 after forming the accumulation zone. As a result, the solid particles in the accumulation zone no longer continue to feed while filling the pre-storage zone 21 in an orderly manner. When the container 10 is tilted at an angle less than 45°, the solid particles in the container 10 cannot form an accumulation zone. Therefore, the solid particles are intercepted at the buffer port and cannot fill the second space.

[0065] The included angle between the inclined partition 26 and the side wall 292 is A1, 15°<A1<45°, and the included angle between the buffer partition 27 and the side wall 292 is A2, 105°<A2<135°.

[0066] In this embodiment, the included angle A1 between the inclined partition 26 and the side wall 292 is 30°, and the included angle A2 between the buffer partition 27 and the side wall 292 is 120°.

[0067] Example 2

[0068] like Figure 10 As shown, unlike Example 1, in this embodiment, the buffer partition 27 is inclined upward along the surrounding wall 294, the buffer partition 27 is perpendicular to the inclined partition 26, and the minimum distance S1 of the buffer port in the horizontal direction is equivalent to the minimum distance between the inclined partition 26 and the side wall 292 in the horizontal direction, that is, the diameter S2 of the entrance of the pre-storage area 21.

[0069] In this embodiment, the upper edge of the inclined partition 26 of the quantitative zone 22 and the lower edge of the longitudinal partition 281 are at the same height H and are offset by a certain horizontal distance S. The horizontal distance S determines the interception rate of solid particles. The minimum distance S1 between the buffer partition 27 and the inclined partition 26 of the quantitative zone 22 is equal to the minor diameter S2 of the entrance to the pre-storage zone 21, allowing solid particles to enter the pre-storage zone 21 smoothly.

[0070] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An exhaust valve for a container cap, characterized in that: The container lid is a cover body that is placed on the container. The cover body is provided with an exhaust valve for automatically releasing pressure when the cover body closes the container; the exhaust valve includes an exhaust hole and a patch. When the pressure inside the container is greater than that outside the container, the patch partially detaches from the cover body along the exhaust hole to form an exhaust channel connecting the exhaust hole to the outside. When the pressure inside the container is less than or equal to that outside the container, the patch clings to the exhaust hole and the cover body, and the exhaust channel is closed.

2. The exhaust valve for container cap according to claim 1, characterized in that: The exhaust hole comprises at least one, which is arranged on the plane or cylindrical surface of the cover and communicates with the interior of the container; the patch is a flexible sheet, which is pasted on the outside of the cover and completely covers the exhaust hole.

3. The exhaust valve for container cap according to any one of claims 1 or 2, characterized in that: The patch eccentrically covers the exhaust hole.

4. The exhaust valve for container cap according to claim 1, characterized in that: The cover body includes a main cover, an outward-expanding connecting seat and a flip cover. The outward-expanding connecting seat is connected to the bottom of the main cover through a side wall. The flip cover is connected to the main cover through a hinge. The hinge is located on one side of the flip cover and is used to guide the flip cover to perform a one-way folding action relative to the main cover. The flip cover also includes a closing plug for closing the discharge port of the container; the exhaust valve is arranged on the closing plug.

5. The exhaust valve for container cap according to claim 4, characterized in that: The closing plug includes a circular wall surface protruding from the inner surface of the flip cover, the circular wall surface forms a cavity on the flip cover, the discharge port is enclosed in the cavity, and the exhaust hole connects the cavity to the outside of the container cover for pressure relief.

6. The exhaust valve for container cap according to any one of claims 4 to 5, characterized in that: The exhaust hole is arranged on the flip cover and penetrates from the inner surface of the flip cover to the outer surface of the flip cover.

7. The exhaust valve for a container cap according to claim 5, characterized in that: The exhaust holes include a plurality of holes evenly distributed on the circular wall surface, and penetrate the outer surface of the flip cover from the side surface of the circular wall surface.

8. The exhaust valve for a container cap according to any one of claims 4 to 5, characterized in that: A longitudinal partition is provided in the main cover, an inclined partition is provided in the outward expansion connection seat, the bottom of the inclined partition and the side wall form a buffer port, the top of the inclined partition and the side wall form a pre-storage port, the bottom of the longitudinal partition and the top of the inclined partition form a material blocking port, and the top of the longitudinal partition and the side wall form a discharge port; The exhaust hole is located above the discharge port, and the patch is located above the exhaust hole; The outward-expanding connection seat also includes a surrounding wall extending from the side wall into the container and a buffer partition connected to the surrounding wall. The buffer partition is inclined upward or downward from the surrounding wall and is used for buffering the buffer port.

9. The exhaust valve for a container cap according to claim 8, wherein: The overlapping distance between the longitudinal partition and the inclined partition in the vertical direction is b, and the gap distance between the pre-storage port and the buffer port in the horizontal direction is a, b≥a.

10. The exhaust valve for a container cap according to claim 8, wherein The included angle between the inclined partition and the side wall is A1, 15°<A1<45°, and the included angle between the buffer partition and the side wall is A2, 105°<A2<135°.

Images