CN217946138U - Novel exhaust cover - Google Patents

Abstract

The utility model discloses a novel exhaust lid, which comprises a cover body, locate the separation blade in the lid, and the enclosing cover that the lid fits the lid, the enclosing cover is equipped with the venthole, the lid includes round installation edge, extend in the inboard geyser at installation edge, be equipped with exhaust hole portion in the geyser, exhaust hole portion is equipped with a plurality of exhaust hole, exhaust hole portion covers has the exhaust membrane in order to shelter from the exhaust hole, the ascending skew geyser's of exhaust hole portion bottom, the separation blade inlays in the geyser, and be located exhaust hole portion below, the separation blade is equipped with the retaining ring by one side of exhaust hole portion, the retaining ring is located exhaust hole portion's periphery, the retaining ring is equipped with breach two, the separation blade is equipped with the breach one that can supply the gas to pass through. The utility model discloses the component part is few, and the exhaust membrane position is reasonable, and the below of exhaust hole portion is equipped with the separation blade, makes the below of exhaust membrane surround by the separation blade that has the retaining ring, and directly over the exhaust membrane was not located to the venthole of enclosing cover, from the upper and lower direction homoenergetic pollution reduction probability, the exhaust membrane size is big and the exhaust route is smooth and easy, and the exhaust membrane is easily got rid of, emptys the convenience.

Description

Novel exhaust cover

Technical Field

The utility model belongs to the technical field of the packing, more relate to a novel exhaust lid for pail pack opening part.

Background

Some packaging barrels require a lid to seal the opening. During storage or transportation, the contents of the packaging barrel may generate gas, and the gas needs to be discharged in time. Some lids of packaging containers require a vent cap because the packaging container may be deformed or even exploded if not discharged in time.

The existing exhaust cover structure needs to be improved, such as: the exhaust film of the simple exhaust cover is directly and flatly attached to the lower surface of the cover, substances in the packaging barrel are easy to contact with the exhaust film, and the pollution degree of the exhaust film is relatively serious; some exhaust covers have complicated structures in order to reduce the pollution probability of the exhaust film, but the exhaust cover with the structure has small size of the exhaust film, unsmooth exhaust and influence on the exhaust volume; when the materials in the packaging barrel need to be poured, the edge of the exhaust film is damaged inconveniently, and the pouring outlet structure is small and the pouring is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a novel exhaust lid, the part of constitution is few, and the exhaust membrane position sets up rationally, reduces the pollution probability, and the exhaust membrane size is big and exhaust route is smooth and easy, and when empting the material, the exhaust membrane is easily got rid of, emptys the convenience.

According to the utility model discloses an aspect, a novel exhaust lid is provided, it includes the lid, and the lid fits the enclosing cover of lid, the lid is installed in the pail pack, the enclosing cover is equipped with the venthole, novel exhaust lid still includes the separation blade, the lid includes round installation edge, extend in the inboard geyser of installation edge, be equipped with exhaust hole portion in the geyser, exhaust hole portion is equipped with a plurality of exhaust hole, exhaust hole portion covers has the exhaust membrane in order to shelter from the exhaust hole, the bottom of the ascending skew geyser of exhaust hole portion, the separation blade inlays in the geyser, and be located exhaust hole portion below, one side that the separation blade leaned on exhaust hole portion is equipped with the retaining ring, the retaining ring is located exhaust hole portion's periphery, the retaining ring is equipped with breach two, the separation blade is equipped with the breach one that can pass through for the gas. From this, this novel exhaust lid is by the enclosing cover, lid and separation blade are constituteed, moreover, the steam vent portion's below is equipped with the separation blade, and the retaining ring of separation blade can surround the steam vent portion, during the exhaust, gas is through breach one, breach two, the exhaust membrane, reach between exhaust membrane and the enclosing cover, it is external to discharge through the venthole, if the pail pack is in the transportation, because inside material rocks especially liquid, when rocking, liquid is blocked by the separation blade that has the retaining ring, in order to reduce the probability that a large amount of contact exhaust membranes of liquid, reduce the exhaust membrane and pollute, the risk of jam, it is smooth and easy to ensure to exhaust.

In some embodiments, the cover wall includes a cover side wall extending downwardly along an inner side of the mounting rim, and an annular outlet portion extending upwardly from a bottom of the cover side wall, the annular outlet portion forming a gap with the inner side of the cover side wall, the vent portion being located within the annular outlet portion, the vent hole of the outer cover being located above the gap between the annular outlet portion and the cover side wall. Therefore, the size of the exhaust membrane is determined by the caliber of the annular outlet, and the exhaust membrane is only slightly smaller than the caliber of the annular outlet, so that the size of the exhaust membrane is increased, and the exhaust volume is increased; and the air outlet hole of the outer cover is reasonably arranged, and the air outlet hole is not directly positioned right above the exhaust membrane but positioned above a gap between the annular outlet part and the side wall of the cover body, so that external substances can be prevented from directly entering the exhaust membrane, and the exhaust membrane is protected.

In some embodiments, the wall thickness of the joint of the exhaust hole part and the annular outlet part is thin so as to form a tearing mark, a plurality of first notches are arranged, clamping edges are formed between adjacent first notches, and one clamping edge is positioned at the second notch. Therefore, when the materials in the packaging barrel need to be poured, a force is applied to the vent hole part, the vent hole part is separated from the annular outlet part along the tearing mark, the vent film is separated from the annular outlet part along with the vent hole part, and the vent film is conveniently removed; the second notch and the clamping edge form a flow guide hole structure, and even if liquid enters the upper part of the baffle, the liquid can fall onto the baffle and can be discharged from the flow guide hole.

In some embodiments, the lower surface of the outer cover is provided with an inner retainer ring and an outer retainer ring, the inner retainer ring and the outer retainer ring form a cavity for accommodating the annular outlet portion, a gap is formed between the top of the annular outlet portion and the lower surface of the outer cover, and air passing gaps for air to pass through are formed between the annular outlet portion and the inner retainer ring and between the annular outlet portion and the outer retainer ring. Therefore, when exhausting, the gas in the packaging barrel passes through the exhaust membrane, enters between the exhaust membrane and the outer cover, passes through the gas gap, the gap between the top of the annular outlet part and the lower surface of the outer cover and the gap between the annular outlet part and the side wall of the cover body, and is finally exhausted out of the packaging barrel through the gas outlet hole, the exhaust path is reasonable, and the external substances are prevented from entering the exhaust membrane to protect the exhaust membrane.

In some embodiments, the outer sidewall of the annular outlet portion is threadably connected to the inner sidewall of the outer retainer. Therefore, although the annular outlet part is connected with the outer cover through the threads, the air passing gap needs to be ensured to be smooth, the thread connection structure can prevent liquid from flowing out, and can be used for conveniently applying force to the annular outlet part through the threads when the annular outlet part needs to be pulled out upwards relative to the cover body, so that the annular outlet part is convenient to topple in the later period.

In some embodiments, the air outlet hole is provided with an outer ring air outlet hole and an arc-shaped air outlet hole, the arc-shaped air outlet hole is positioned on the inner side of the outer ring air outlet hole, a tearable area is arranged between the arc-shaped air outlet hole and the outer ring air outlet hole, and the tearable area is provided with a handheld part which is obliquely arranged relative to the upper surface of the outer cover;

when the substances in the packaging barrel are poured, the tearable area is pulled, the side wall of the cover body moves upwards along with the annular outlet part to generate deformation, the side wall of the cover body protrudes upwards and is higher than the mounting edge, and the side wall of the cover body and the annular outlet part form a pouring outlet for pouring the substances in the packaging barrel. Therefore, the annular outlet part is convenient to pull out, and the materials of the packaging barrel are convenient to pour.

In some embodiments, the bottom of the mounting edge is provided with a mounting inner edge, and the mounting inner edge is provided with a plurality of welding points. Thus, the mounting inner edge is mainly used for better welding of the vent cover and the packaging barrel.

In some embodiments, a plurality of blocking members are arranged outside the connection part of the mounting edge and the side wall of the cover body, and the blocking members are distributed in an annular shape. Therefore, when the annular outlet part is pulled out upwards and the side wall of the cover body is deformed, the joint of the mounting edge and the side wall of the cover body is the position closest to the substances in the packaging barrel, and the stopper is arranged at the joint, so that the liquid can be prevented from suddenly impacting the annular outlet part to buffer the impact force of the liquid.

In some embodiments, the side wall of the inner collar is provided with an exhaust notch, and the gas passes through the exhaust membrane, the exhaust notch, a gap between the top of the annular outlet part and the lower surface of the outer cover, an air passing gap, a gap between the annular outlet part and the inner side of the side wall of the cover body and the air outlet hole in sequence, and is exhausted from the inside to the outside of the packaging barrel. Therefore, the exhaust notch is formed in the inner check ring, so that gas can be conveniently guided to rapidly enter the gap between the gas passing gap and the inner side of the annular outlet part and the side wall of the cover body, and the exhaust speed is increased.

In some embodiments, a support bump is provided between the top of the annular outlet portion and the lower surface of the outer cover, the support bump being provided on the top of the annular outlet portion, or the support bump being provided on the lower surface of the outer cover. Therefore, the supporting salient point part can be arranged on the outer cover and also can be arranged on the annular outlet part, the outer cover can play a supporting role after being covered with the cover body, a gap can be ensured to be reserved between the outer cover and the top of the annular outlet part, and gas can be ensured to pass through.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a novel exhaust cover comprises enclosing cover, lid and enclosing cover three part, moreover, the steam generator is simple in structure, the exhaust membrane position sets up rationally, the below of exhaust hole portion is equipped with the separation blade, and the retaining ring of separation blade can surround exhaust hole portion, make the below of exhaust membrane surrounded by the separation blade that has the retaining ring, the venthole of enclosing cover does not locate directly over the exhaust membrane, thus, reduce the probability that the interior liquid of packing barrel contacted the exhaust membrane in a large number, and the exhaust route is reasonable, external material is difficult to directly get into the exhaust membrane through the enclosing cover, be favorable to protecting the exhaust membrane, the structure of the novel exhaust cover can protect the exhaust membrane on the upper and lower face of exhaust membrane, reduce the risk that the exhaust membrane is polluted, blockked up, ensure to exhaust smoothly; the structural design of the cover body is beneficial to increasing the size of the exhaust membrane as much as possible and improving the exhaust amount, the exhaust hole part where the exhaust membrane is located is easy to remove, and the cover body can be deformed due to the practical application requirement to form an annular outlet part protruding outwards, so that the materials in the packaging barrel can be poured.

Drawings

Fig. 1 is an exploded view of a novel exhaust cover of embodiment 1 of the present invention;

FIG. 2 is a schematic perspective view of the assembled structure of FIG. 1;

FIG. 3 is a schematic view of the assembled internal structure of FIG. 1 from another perspective of the cover;

FIG. 4 is a schematic structural view of the cover;

FIG. 5 is a top view of the cover;

FIG. 6 is a schematic structural view of the outer lid of embodiment 1;

fig. 7 is a perspective view of the cover body of embodiment 2 of a novel venting cover of the present invention;

fig. 8 is a perspective view of embodiment 3 of a novel venting cover of the present invention;

FIG. 9 is a perspective view of the outer lid of embodiment 3;

FIG. 10 is a perspective view of the alternate view of FIG. 9;

fig. 11 is a perspective view of embodiment 4 of a novel venting cover of the present invention;

FIG. 12 is a schematic structural view of the cover deformed in example 4;

FIG. 13 is a schematic view of the structure of the baffle plate;

fig. 14 is a schematic structural view of embodiment 5 of the novel exhaust cover of the present invention.

Detailed Description

The present invention will be further described with reference to the following embodiments.

Example 1

As shown in fig. 1 to 3, the novel exhaust cover according to an embodiment of the present invention includes a cover body 2, a blocking plate 3, and an outer cover 1 covering the cover body 2. The cover 2 comprises a ring of mounting rim 21, a cover wall 22 extending inside the mounting rim 21. The mounting rim 21 is mounted to the packaging barrel and the vent cap can be attached to the packaging barrel by encapsulation or ultrasonic welding. In this embodiment, the cover wall 22 specifically includes: the cover body side wall 221 extends downwards along the inner side of the mounting edge 21, the cover body side wall 221 is slightly inclined inwards from top to bottom, an annular outlet portion 222 extends upwards from the inner side of the bottom of the cover body side wall 221, the joint of the annular outlet portion 222 and the cover body side wall 221 is in arc transition, and a gap 41 is formed between the annular outlet portion 222 and the inner side of the cover body side wall 221. The annular outlet portion 222 is provided with an exhaust hole 23, and the position of the exhaust hole 23 is deviated upward from the bottom of the cover side wall 221. The attachment edge 21, the cover wall 22, and the air vent portion 23 of the lid body 2 are integrally formed. The exhaust hole portion 23 is provided with a plurality of exhaust holes 231 (shown in fig. 5) uniformly distributed, the exhaust hole portion 23 is covered with an exhaust film 24 by a hot melting technology, and the exhaust film 24 can allow air to pass through and can shield the exhaust holes 231. The blocking sheet 3 is embedded into the cover wall 22, specifically, the inner wall of the annular outlet portion 222 is provided with a circle of protruding portions 29 (shown in fig. 4), as shown in fig. 13, the edge of the blocking sheet 3 is provided with four notches one 321, a clamping edge 32 is formed between adjacent notches one 321, and the blocking sheet 3 and the protruding portions 29 of the annular outlet portion 222 are installed in a clamping manner through the clamping edge 32. One side of the baffle plate 3 close to the exhaust hole part 23 is provided with a retaining ring 31, the retaining ring 31 is positioned on the periphery of the exhaust hole part 23, the retaining ring 31 is provided with a second notch 311, and one clamping edge 32 is positioned at the second notch 311. The outer lid 1 is provided with an air outlet hole 11, and the air outlet hole 11 is located above the gap 41 between the annular outlet portion 222 and the lid side wall 221.

As shown in fig. 4, the portion where the exhaust hole portion 23 and the annular outlet portion 222 are connected has a thin wall thickness to form a tear 25. When the contents of the packaging barrel need to be poured, force is applied to the vent hole part 23, the vent hole part 23 is separated from the annular outlet part 222 along the tearing mark 25, the vent film 24 is separated from the annular outlet part 222 along with the vent hole part 23, and the vent film 24 is convenient to remove.

The position of the exhaust hole 23 is not necessarily too low, and may be set at the middle position of the annular outlet portion 222 or at the upper position of the annular outlet portion 222.

In the present embodiment, as shown in fig. 3 and 6, the specific structure of the outer cap 1: the lower surface of the outer cover 1 has a ring of inner retainer rings 12 and a ring of outer retainer rings 13, and the inner retainer rings 12 and the outer retainer rings 13 form a cavity for accommodating the annular outlet portion 222. When the outer cover 1 is covered with the cover body 2, a gap 42 is formed between the top of the annular outlet portion 222 and the lower surface of the outer cover 1, a gas passing gap 43 through which gas can pass is formed between the annular outlet portion 222 and the inner retainer 12 and the outer retainer 13, and the gas outlet 11 of the outer cover 1 is located above the gap 41 between the annular outlet portion 222 and the cover body side wall 221. The outer side wall of the annular outlet portion 222 is in threaded connection with the inner side wall of the outer retainer 13. The annular outlet 222 is screwed to the outer cover 1, but it is necessary to ensure that the air passing gap 43 is not blocked, for example, the screw thread is designed in a segmented manner, or the screw thread is grooved 132 (shown in fig. 10), or the fit clearance of the screw thread is large. The air outlet hole 11 of the outer cover 1 is positioned at the inner circle and the outer circle of air outlet holes 11, and symmetrical handheld parts 14 are further arranged for facilitating the rotating appearance.

In practical applications, the outer sidewall of the annular outlet portion 222 and the inner sidewall of the outer retainer 13 may not be screwed, but it is necessary to ensure that the outer lid 1 and the lid body 2 are not easily detached after being closed.

At least one exhaust notch 121 (shown in fig. 3 and 10) is formed in the side wall of the inner retainer ring 12, so that the function of guiding gas can be achieved, and the gas exhaust is accelerated.

In the present embodiment, the path of exhaust gas: when exhausting, the gas in the packaging barrel enters the lower part of the exhaust membrane 24 through the first notch 321 and the second notch 311, passes through the exhaust membrane 24 and enters between the exhaust membrane 24 and the outer cover 1, and then most of the gas is exhausted to the outside of the packaging barrel through the exhaust notch 121, the gap 42 between the top of the annular outlet part 222 and the lower surface of the outer cover 1, the air passing gap 43, the gap 41 between the annular outlet part 222 and the inner side of the cover body side wall 221 and the air outlet hole 11 in sequence. After passing through the air discharge film 24, some of the gas passes through the air passing gap 43 between the inner baffle 12 and the annular outlet portion 222, the gap 42 between the top of the annular outlet portion 222 and the lower surface of the outer lid 1, the air passing gap 43 between the annular outlet portion 222 and the inner baffle 12, and the gap 41 between the annular outlet portion 222 and the lid side wall 221, and is finally discharged out of the packaging barrel through the air outlet hole 11.

The baffle 3 is positioned below the air outlet part 23, the retainer ring 31 of the baffle 3 can surround the air outlet part 23, and when the packaging barrel shakes in the transportation process, liquid is blocked by the baffle 3 with the retainer ring 31, so that the probability that the liquid in the packaging barrel contacts the air outlet film 24 can be reduced. The air outlet hole 11 of the outer lid 1 is located above the gap 41 between the annular outlet portion 222 and the lid side wall 221, so that the air outlet hole 11 is not located right above the exhaust membrane 24, and the exhaust lid can prevent external substances from entering the exhaust membrane 24 from above under the condition of ensuring smooth exhaust, which is beneficial to protecting the exhaust membrane 24. The utility model provides a novel exhaust lid, from two upper and lower directions of exhaust membrane 24, reduces the risk that exhaust membrane 24 is polluted, is blockked up, ensures that it is smooth and easy to exhaust.

The size of the exhaust membrane 24 is determined by the aperture of the annular outlet 222, the exhaust membrane 24 is only slightly smaller than the aperture of the annular outlet 222, the structural design of the cover body 2 is favorable for increasing the size of the exhaust membrane 24 as much as possible, the exhaust path is reasonable, and the exhaust volume is favorable for improving.

Example 2

Embodiment 2 differs from embodiment 1 only in that a support convex portion 28 is provided between the top of the annular outlet portion 222 and the lower surface of the outer lid 1. As shown in fig. 7, in the present embodiment, the support protruding portion 28 is provided on the top of the annular outlet portion 222, but in practical applications, the support protruding portion 28 may also be provided on the lower surface of the outer cover 1.

A gap 42 is formed between the top of the annular outlet portion 222 and the lower surface of the outer lid 1, and the protruding point portion 28 can serve as a support after the outer lid 1 and the lid body 2 are closed, and can avoid excessive force application assembly, so that the gap 42 is ensured between the top of the annular outlet portion 222 and the outer lid 1, and gas can pass through.

Example 3

The main difference between example 3 and example 1 is that: because the connection mode of the exhaust cover and the packaging barrel is different, the structure of the connection part of the cover body 2 and the packaging barrel is different; and, in order to facilitate the pulling out of the annular outlet portion 222, the form of the outer lid 1 is different.

As shown in fig. 8, the bottom of the mounting edge 21 has a plurality of circumferentially distributed mounting inner edges 26, and the mounting inner edges 26 have welding points 261 for facilitating the better welding of the vent cover to the packaging barrel.

In the present embodiment, as shown in fig. 9 and 10, the specific structure of the exterior cover 1: the enclosing cover 1 formula structure as an organic whole, the venthole 11 of enclosing cover 1 has outer lane venthole 111 and arc venthole 112, and arc venthole 112 is located outer lane venthole 111 inboard, has tearable district 113 between arc venthole 112 and the outer lane venthole 111, and tearable district 113 has a handheld portion 14, and handheld portion 14 sets up for the upper surface slope of enclosing cover 1.

The outer side wall of the annular outlet portion 222 is screwed to the inner side wall of the outer retainer 13, and the screw connection must be secure, so that there is no large gap between the screws, and it is necessary to ensure that the annular outlet portion 222 can be forced by the screws when the annular outlet portion 222 is pulled out upward with respect to the lid body 2, in order to avoid slipping.

When the contents in the packaging barrel are poured, the hand-held part 14 is opened, the tearable area 113 is pulled, the tearable area 113 is partially separated from the outer cover 1, the force is continuously applied to pull the outer cover 1, the cover body side wall 221 moves upwards along with the annular outlet part 222 to generate deformation, the cover body side wall 221 protrudes upwards and is higher than the mounting edge 21, and the cover body side wall 221 and the annular outlet part 222 form a pouring outlet for pouring the contents in the packaging barrel. With the structure, the annular outlet part 222 is convenient to pull out, and the materials of the packaging barrel are convenient to pour. When the annular outlet portion 222 is not required to be pulled out, the outer lid 1 can be unscrewed directly to break the tear 25, and the vent portion 23 can be removed, so that the substance in the packaging barrel can be poured easily.

Example 4

The main difference between the present embodiment 4 and the present embodiment 3 is that, as shown in fig. 11, a plurality of stoppers 27 are provided outside the connection between the mounting edge 21 and the cover sidewall 221, and the stoppers 27 are distributed annularly.

As shown in fig. 12, when the annular outlet 222 is pulled out upward and the lid side wall 221 is deformed, the joint between the mounting edge 21 and the lid side wall 221 is located at the position closest to the material inside the packaging barrel, and the stopper 27 is provided here to prevent the liquid from suddenly impacting the annular outlet 222 and to buffer the impact of the liquid.

Example 5

The main difference between this embodiment 5 and embodiment 1 is that the cover wall 22 of the cover body 2 has a different structure. As shown in fig. 14, the cover 2 includes a ring-shaped mounting rim 21 and a cover wall 22 extending downwardly along the inside of the mounting rim 21. The vent hole portion 23 is provided in the cover wall 22, and a ring of protrusions 29 for attaching the shutter 3 is provided at the lower portion of the cover wall 22. The specific structure of the baffle 3 is the same as that of the baffle 3 in embodiment 1.

In order to prevent foreign substances from directly contacting the upper surface of the vent film 24, the outer retainer 13 of the exterior cover 1 may surround the vent hole portions 23 from above, and the vent holes 11 are not located directly above the vent hole portions 23. To ensure smooth exhaust, the outer retainer 13 may be provided with an exhaust port 131.

The utility model provides a novel exhaust cover structure of many money, novel exhaust cover comprises enclosing cover 1, lid 2 and 1 three part of enclosing cover, simple structure. The position of the exhaust membrane 24 is set reasonably, the lower part of the exhaust hole part 23 is provided with the baffle 3, the baffle 31 of the baffle 3 can surround the exhaust hole part 23, the lower part of the exhaust membrane 24 is surrounded by the baffle 3 with the baffle 31, the air outlet 11 of the outer cover 1 is not arranged right above the exhaust membrane 24, therefore, the probability of a large amount of liquid contacting the exhaust membrane 24 in the packaging barrel is reduced, the exhaust path is reasonable, external substances are difficult to directly enter the exhaust membrane 24 through the outer cover 1, the exhaust membrane 24 is protected, the novel exhaust cover structure can protect the exhaust membrane 24 on the upper surface and the lower surface of the exhaust membrane 24, the exhaust membrane 24 is polluted, the blocking risk is reduced, and the exhaust is smooth. The structural design of the cover body 2 is favorable for increasing the size of the exhaust membrane 24 as much as possible and improving the exhaust volume. The vent hole part 23 where the vent film 24 is located is easy to remove, and the cover body 2 can be deformed according to practical application requirements to form an annular outlet part 222 protruding outwards, so that the substances in the packaging barrel can be poured conveniently.

The foregoing is only illustrative of some embodiments of the present invention, and it should be noted that, for those skilled in the art, other variations and modifications can be made without departing from the inventive concept of the present invention, and these all fall into the scope of the present invention.

Claims (10)

1. The utility model provides a novel exhaust lid, includes lid (2) and the enclosing cover (1) that fits lid (2), install in the pail pack lid (2), enclosing cover (1) is equipped with venthole (11), a serial communication port, novel exhaust lid still includes separation blade (3), lid (2) include round installation edge (21), extend in the inside apron (22) of installation edge (21), be equipped with exhaust hole portion (23) in apron (22), exhaust hole portion (23) are equipped with a plurality of exhaust hole (231), exhaust hole portion (23) cover have exhaust membrane (24) in order to shelter from exhaust hole (231), the bottom of exhaust hole portion (23) upwards skew apron (22), separation blade (3) inlay in apron (22), and be located exhaust hole portion (23) below, one side that separation blade (3) leaned on exhaust hole portion (23) is equipped with air feed back ring (31), separation ring (31) are located the periphery of exhaust hole portion (23), separation ring (31) are equipped with breach two (311), separation blade (3) are equipped with one breach (321) that can the body passes through.

2. The novel exhaust cover according to claim 1, wherein the cover wall (22) comprises a cover side wall (221) extending downward along the inner side of the mounting rim (21), and an annular outlet portion (222) extending upward from the bottom of the cover side wall (221), the annular outlet portion (222) and the inner side of the cover side wall (221) form a gap (41), the exhaust hole portion (23) is located in the annular outlet portion (222), and the air outlet hole (11) of the outer cover (1) is located above the gap (41) between the annular outlet portion (222) and the cover side wall (221).

3. The novel exhaust cover as claimed in claim 2, wherein the connecting portion of the exhaust hole portion (23) and the annular outlet portion (222) is thin to form a tear mark (25), the first notch (321) is provided with a plurality of first notches (321), and a clamping edge (32) is formed between adjacent first notches (321), wherein one clamping edge (32) is located at the second notch (311).

4. The novel exhaust cover according to claim 3, characterized in that an inner retainer ring (12) and an outer retainer ring (13) are arranged on the lower surface of the outer cover (1), the inner retainer ring (12) and the outer retainer ring (13) form a cavity for accommodating the annular outlet portion (222), a gap (42) is formed between the top of the annular outlet portion (222) and the lower surface of the outer cover (1), and a gas passing gap (43) for gas to pass through is formed between the annular outlet portion (222) and the inner retainer ring (12) and the outer retainer ring (13).

5. The novel exhaust cover according to claim 4, characterized in that the outer side wall of the annular outlet portion (222) is in threaded connection with the inner side wall of the outer retainer (13).

6. The novel exhaust cover according to claim 5, wherein the air outlet hole (11) is provided with an outer ring air outlet hole (111) and an arc-shaped air outlet hole (112), the arc-shaped air outlet hole (112) is positioned at the inner side of the outer ring air outlet hole (111), a tearable area (113) is arranged between the arc-shaped air outlet hole (112) and the outer ring air outlet hole (111), and the tearable area (113) is provided with a handheld part (14) which is obliquely arranged relative to the upper surface of the outer cover (1);

when the substance in the packaging barrel is poured, the tearable area (113) is pulled, the cover body side wall (221) deforms along with the upward movement of the annular outlet portion (222), the cover body side wall (221) protrudes upward and is higher than the mounting edge (21), and the cover body side wall (221) and the annular outlet portion (222) form a pouring outlet for pouring the substance in the packaging barrel.

7. The new venting cover of claim 6 wherein the bottom of the mounting rim (21) is provided with an inner mounting edge (26), and the inner mounting edge (26) is provided with a plurality of welding points (261).

8. The new venting cover according to claim 7, wherein a plurality of stoppers (27) are provided outside the junction of the mounting rim (21) and the cover body sidewall (221), said stoppers (27) being annularly distributed.

9. The novel exhaust cover as claimed in claim 5 or 6, wherein the side wall of the inner retainer ring (12) is provided with an exhaust notch (121), and the gas passes through the exhaust membrane (24), the exhaust notch (121), a gap (42) between the top of the annular outlet part (222) and the lower surface of the outer cover (1), an air passing gap (43), a gap (41) between the annular outlet part (222) and the inner side of the cover body side wall (221), and an air outlet hole (11) in sequence and is exhausted from the interior to the exterior of the packaging barrel.

10. The novel exhaust cover according to claim 5 or 6, characterized in that a supporting salient point part (28) is arranged between the top of the annular outlet part (222) and the lower surface of the outer cover (1), the supporting salient point part (28) is arranged on the top of the annular outlet part (222) or the supporting salient point part (28) is arranged on the lower surface of the outer cover (1).

Images