CN213064797U

CN213064797U - Exhaust valve and airtight bag

Info

Publication number: CN213064797U
Application number: CN202021469087.4U
Authority: CN
Inventors: 余伟挺
Original assignee: Shenzhen Paileshi Industrial Co ltd
Current assignee: Shenzhen Paileshi Industrial Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-04-27
Anticipated expiration: 2030-07-22

Abstract

The application belongs to the technical field of household articles, and particularly relates to an exhaust valve and an airtight bag, the exhaust valve comprises a valve body, an elastic cover body and an elastic sealing element, an exhaust hole which penetrates through the valve body along the axial direction of the exhaust hole is formed in the valve body, an installation part and ribs are arranged at the first end of the exhaust hole, the installation part is arranged in the middle of the exhaust hole, an exhaust channel is formed between the outer peripheral wall of the installation part and the inner peripheral wall of the exhaust hole, one end of each rib is connected with the installation part, the other end of each rib is connected with the inner peripheral wall of the exhaust hole, the elastic sealing element is arranged on the installation part and; the elastic cover body is inserted into the second end of the exhaust hole and is in interference fit with the exhaust hole; on the basis that elastic sealing element is sealed, through elasticity lid and exhaust hole interference fit, increased discharge valve's gas tightness, and its simple structure, during the operation, only need extract or fill in the elasticity lid can, operate and use more convenient and fast.

Description

Exhaust valve and airtight bag

Technical Field

The application belongs to the technical field of household articles, and particularly relates to an exhaust valve and an airtight bag.

Background

In daily life, airtight bag has been widely used, its mainly used compression preserves articles such as clothing, bed clothes, toys, airtight bag includes the bag body and sets up the exhaust valve on the bag body, put into the bag body with the article after, with the bag body seal back, open exhaust valve again, the extrusion bag body for the internal air of bag is discharged from exhaust valve, thereby reduced the volume of article effectively, conveniently deposit, but current exhaust valve, the structure is complicated, the operation is complicated, and exhaust valve's gas tightness is not good, after long-time the use, the problem of gas leakage easily appears.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide an exhaust valve and airtight bag, aim at solving the exhaust valve structure among the prior art complicacy, use the complicated and not good technical problem of gas tightness of operation.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: an exhaust valve comprises a valve body, an elastic cover body and an elastic sealing element, wherein an exhaust hole which penetrates through the valve body along the axial direction of the valve body is formed in the valve body, an installation part and ribs are arranged at the first end of the exhaust hole, the installation part is arranged in the middle of the exhaust hole, an exhaust channel is formed between the outer peripheral wall of the installation part and the inner peripheral wall of the exhaust hole, one end of each rib is connected with the installation part, the other end of each rib is connected with the inner peripheral wall of the exhaust hole, the elastic sealing element is arranged on the installation part and is close to the second end of the exhaust hole and used for opening and sealing the exhaust channel; the elastic cover body is inserted into the second end of the exhaust hole and is in interference fit with the exhaust hole.

Optionally, the elasticity lid includes grafting portion, connecting strip and installation circle, set up the installation annular that extends along its circumferencial direction on the periphery wall of valve body, the installation snare is located outside the valve body, and the card is gone into in the installation annular, the one end of connecting strip with the installation circle is connected, the other end of connecting strip with grafting portion connects, grafting portion peg graft in the second end in the exhaust hole.

Optionally, the insertion part includes an insertion column and a disc, a first end of the insertion column is connected to the disc and is perpendicular to the disc, a second end of the insertion column is inserted into the second end of the exhaust hole, a periphery of the disc abuts against an end face of the valve body close to the second end of the exhaust hole, and the connecting strip is connected to the disc.

Optionally, the second end of the plug post abuts against the elastic sealing member.

Optionally, the end face of the valve body close to the second end of the exhaust hole is provided with a surrounding protrusion arranged outside the disc piece, and the surrounding protrusion end face is flush with the surface of the disc piece, which faces away from the valve body.

Optionally, the end face of the enclosing protrusion is provided with a first gap and a second gap, the first gap and the second gap are arranged at intervals along the circumferential direction of the enclosing protrusion, the connecting strip is accommodated in the first gap, an operating strip for holding by a person is arranged on the outer circumferential wall of the disc sheet, and the operating strip is accommodated in the second gap and extends out of the valve body.

Optionally, a clamping protrusion extending along the circumferential direction of the outer circumferential wall of the insertion column is arranged on the outer circumferential wall of the insertion column, a clamping groove extending along the circumferential direction of the inner circumferential wall of the exhaust hole is arranged on the inner circumferential wall of the exhaust hole, and the clamping protrusion is clamped in the clamping groove; or, be provided with the joint recess that extends along its circumferencial direction on the periphery wall of grafting post, it is protruding to set up the joint that extends along its circumferencial direction on the internal perisporium in exhaust hole, the protruding joint of joint in the joint recess.

Optionally, be provided with the mounting hole in the installation department, elastic sealing element includes erection column, gasket and spacing post, the erection column wears to locate in the mounting hole, the erection column is close to the one end of elasticity lid with the gasket is connected perpendicularly, spacing post with the other end of erection column is connected, just the external diameter of spacing post is greater than the aperture of mounting hole, the length of erection column is greater than the degree of depth of mounting hole.

Optionally, a plurality of protrusions are arranged on the end face, close to the elastic sealing sheet, of the valve body, and the protrusions are arranged around the exhaust hole at intervals.

One or more technical solutions in the exhaust valve provided by the present application have at least one of the following technical effects: when the air-tight bag is used, the elastic cover body is only required to be pulled out of the air exhaust hole, and then the bag body is extruded or an electric air extractor is adopted, so that the air in the bag body extrudes the elastic sealing element, an air exhaust channel is opened, and air exhaust is realized; after the internal gas of bag had been arranged, directly insert the second end in the exhaust hole with the elasticity lid to plug up the exhaust hole, avoid gas leakage, and, on the basis that elastic sealing element is sealed, can also be through elasticity lid and exhaust hole interference fit, with the bag body sealing, improved discharge valve's gas tightness, in addition, this discharge valve's simple structure, during the operation, only need extract or fill in the elasticity lid can, its operation is used more convenient and fast.

Another technical scheme adopted by the application is as follows: an airtight bag comprises a bag body and the exhaust valve, wherein the valve body is arranged on the bag body.

According to the airtight bag, due to the adoption of the exhaust valve, after the gas in the bag body is exhausted, the elastic cover body is directly inserted into the second end of the exhaust hole, so that the exhaust hole is blocked, and the gas leakage is avoided; in addition, the airtight bag is exhausted only by pressing the bag body and pulling out or plugging the elastic cover body, so that the operation and the use are more convenient and faster.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic view of a vent valve according to an embodiment of the present disclosure.

Fig. 2 is a sectional view taken along line a-a in fig. 1.

Fig. 3 is a schematic view of another view of the discharge valve of fig. 1.

Fig. 4 is an exploded view of the discharge valve shown in fig. 1.

Wherein, in the figures, the respective reference numerals:

10-valve body 11-exhaust hole 12-mounting part

13-rib 14-exhaust channel 15-mounting ring groove

16-annular bulge 17-surrounding bulge 18-bulge

20-elastic cover body 21-plug part 22-connecting strip

23-mounting ring 30-elastic sealing member 31-mounting column

32-sealing piece 33-limiting column 111-chamfer

121-mounting hole 171-first gap 172-second gap

211-plug column 212-disc piece 221-groove

2111-hollow hole 2121-operating strip 2122-antiskid projection.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In one embodiment of the present application, as shown in FIGS. 1-3, a vent valve is provided for use with an airtight bag, a vacuum bag, and a compression bag; the airtight bag, the vacuum bag and the compression bag can be applied to luggage, handbag, backpack and other luggage objects.

The exhaust valve comprises a valve body 10, an elastic cover body 20 and an elastic sealing element 30, wherein exhaust holes 11 which penetrate along the axial direction of the valve body 10 are formed in the valve body 10, fixing holes are formed in the bag bodies of the airtight bag, the vacuum bag and the compression bag, annular protrusions 16 which are arranged along the circumferential direction of the valve body 10 are formed in the outer circumferential wall of the valve body 10, the valve body 10 is inserted into the fixing holes, then the annular protrusions 16 are hot-pressed on the bag bodies, and therefore the exhaust valve is fixedly sealed on the bag bodies, the exhaust holes 11 are communicated with the inside and the outside of the bag bodies, and therefore gas in the bag bodies;

further, a first end of the exhaust hole 11 is provided with a mounting portion 12 and a rib 13, the mounting portion 12 is arranged in the middle of the exhaust hole 11, an exhaust channel 14 is formed between the outer peripheral wall of the mounting portion 12 and the inner peripheral wall of the exhaust hole 11, one end of the rib 13 is connected with the mounting portion 12, the other end of the rib 13 is connected with the inner peripheral wall of the exhaust hole 11, and an elastic sealing member 30 is mounted on the mounting portion 12, is arranged close to a second end of the exhaust hole 11, and is used for opening and sealing the exhaust channel 14; when the exhaust valve is installed on the bag body, the first end of the exhaust hole 11 is located inside the bag body, and the second end of the exhaust hole 11 is located outside the bag body; the mounting part 12 provides a mounting base body for the elastic sealing element 30, the ribs 13 are used for connecting the valve body 10 and the mounting part 12 and play a role in supporting and fixing the mounting, the number of the ribs 13 can be multiple, the ribs 13 are uniformly arranged along the circumference of the mounting part 12 at intervals, and the exhaust channel 14 is used for ensuring the smooth exhaust of the gas in the bag body; the elastic sealing element 30 is arranged close to the second end of the vent hole 11, so that when the gas in the bag body is discharged outwards, the gas pushes the elastic sealing element 30 to move towards the second end of the vent hole 11, and the elastic sealing element 30 deforms towards the second end of the vent hole 11, so that the elastic sealing element 30 is separated from the ribs 13 and other parts, the vent channel 14 is opened, and the gas is discharged; when the air outside the bag body enters the bag body, the air pushes the elastic sealing element 30 to move towards the first end of the exhaust hole 11, so that the elastic sealing element 30 completely abuts against the ribs 13 and the mounting part 12 and cannot deform, the exhaust channel 14 is blocked, and air leakage is avoided.

Furthermore, the elastic cap 20 is inserted into the second end of the exhaust hole 11 and is in interference fit with the exhaust hole 11.

Specifically, when the exhaust valve of the embodiment of the application is used, only the elastic cover body 20 needs to be pulled out of the exhaust hole 11, and then the bag body is extruded or an electric air extractor is adopted, so that the air in the bag body extrudes the elastic sealing element 30, the exhaust channel 14 is opened, and then the exhaust is realized; after the internal gas of bag had been arranged, directly insert the second end of exhaust hole 11 with elasticity lid 20 in to plug up exhaust hole 11, avoid gas leakage, and, on the sealed basis of elastic sealing element 30, can also be through elasticity lid 20 and exhaust hole 11 interference fit, with the bag body sealing, improved discharge valve's gas tightness, in addition, this discharge valve's simple structure, during the operation, only need extract or fill in elasticity lid 20 can, its operation is used more convenient and fast.

In another embodiment of the present application, referring to fig. 1, 2 and 4, the elastic cover body 20 of the exhaust valve includes an insertion portion 21, a connection strip 22 and a mounting ring 23, the outer peripheral wall of the valve body 10 is provided with a mounting ring groove 15 extending along the circumferential direction thereof, the mounting ring 23 is sleeved outside the valve body 10 and is clamped in the mounting ring groove 15, one end of the connection strip 22 is connected with the mounting ring 23, the other end of the connection strip 22 is connected with the insertion portion 21, and the insertion portion 21 is inserted into the second end of the exhaust hole 11. Specifically, the elastic cover body 20 is sleeved in the mounting ring groove 15 on the valve body 10 through the mounting ring 23, so that the insertion part 21 of the elastic cover body 20 is connected to the valve body 10, and thus, when the insertion part 21 is inserted into the exhaust hole 11 and pulled out of the exhaust hole 11, the insertion part 21 can be connected to the valve body 10, the use of the insertion part 21 is more convenient, and the problem of loss can not occur; the connecting strip 22 serves to connect the mounting ring 23 and the plug part 21.

Furthermore, the middle of the surface of the connecting strip 22 facing the inserting part 21 is provided with a groove 221, so that when the inserting part 21 is inserted into the exhaust hole 11, the middle of the connecting strip 22 is bent, and the arrangement of the groove 221 causes less material accumulation in the middle of the connecting strip 22, so that the bending of the connecting strip 22 is smoother, and the middle of the connecting strip is prevented from being bulged to scratch other objects.

In another embodiment of the present application, referring to fig. 1, 2 and 4, the insertion portion 21 of the exhaust valve includes an insertion column 211 and a circular disc 212, a first end of the insertion column 211 is connected to the circular disc 212 and is perpendicular to the circular disc 212, a second end of the insertion column 211 is inserted into a second end of the exhaust hole 11, a periphery of the circular disc 212 abuts against an end surface of the valve body 10 near the second end of the exhaust hole 11, and the connecting bar 22 is connected to the circular disc 212.

Specifically, peg graft post 211 and exhaust hole 11 grafting interference fit to improve this discharge valve's gas tightness, after peg graft post 211 in exhaust hole 11, the edge of circle piece 212 supports tightly on the terminal surface of valve body 10, thereby avoids peg graft post 211 to insert completely in exhaust hole 11, and be difficult to extract, in addition, can pull circle piece 212, extract peg post 211 from exhaust hole 11 in, its operation is simpler.

Furthermore, the edge of the second end of the exhaust hole 11 is provided with a chamfer 111, and the chamfer 111 can play a role in guiding the insertion column 211, so that the insertion column 211 can be inserted into the exhaust hole 11 more easily, and the operation is more labor-saving.

Further, the inserting column 211 is provided with a hollow hole 2111, and the arrangement of the hollow hole 2111 can reduce material accumulation and reduce cost.

In another embodiment of the present application, the second end of the insertion post 211 of the exhaust valve is provided to abut against the elastic sealing member 30. Specifically, after the insertion column 211 is inserted into the exhaust hole 11, the second end of the insertion column 211 presses the elastic sealing element 30, so as to prevent the exhaust channel 14 from being opened, so that the sealing performance of the elastic sealing element 30 is better, and the air tightness of the exhaust valve is greatly improved.

In another embodiment of the present application, referring to fig. 1, fig. 2 and fig. 4, an end surface of the valve body 10 of the exhaust valve near the second end of the exhaust hole 11 is provided with a surrounding protrusion 17 surrounding the disc sheet 212, and an end surface of the surrounding protrusion 17 is flush with a surface of the disc sheet 212 facing away from the valve body 10. Specifically, after the inserting column 211 is inserted into the exhaust hole 11 to be in place, the surrounding protrusion 17 is arranged around the disc sheet 212, and the end surface of the surrounding protrusion 17 and the surface of the disc sheet 212, which faces away from the valve body 10, are located in the same plane, so that the end surface of the exhaust valve is flat, the disc sheet 212 is difficult to move by external parts, the exhaust valve is prevented from being opened by mistake and losing efficacy, and the use stability and reliability of the exhaust valve are improved; meanwhile, the end face is flat and not easy to scratch, and an external object is hooked, so that the use is safer.

In another embodiment of the present application, referring to fig. 1, fig. 2 and fig. 4, a first notch 171 and a second notch 172 are provided on an end surface of the exhaust valve surrounding the protrusion 17, the first notch 171 and the second notch 172 are spaced apart along a circumferential direction of the surrounding protrusion 17, the connecting strip 22 is accommodated in the first notch 171, an operation strip 2121 for a person to hold is provided on an outer circumferential wall of the disc piece 212, and the operation strip 2121 is accommodated in the second notch 172 and extends out of the valve body 10. Specifically, the first notch 171 is used for accommodating the connecting bar 22, and the second notch 172 is used for accommodating the operating bar 2121, so that the external component is difficult to drive the connecting bar 22 and the operating bar 2121 to move, and the exhaust valve can be prevented from being opened by mistake, and further, the stability and reliability of the use of the exhaust valve are improved; in addition, the operating strip 2121 extends out of the second notch 172, so that the operator can conveniently grab the operating strip 2121, and the inserting column 211 is pulled out from the exhaust hole 11 by pulling the operating strip 2121, so that the opening operation of the exhaust valve is more convenient and faster, and time and labor are saved.

Further, referring to fig. 1, 2 and 4, the surface of the operation bar 2121 facing the inserting column 211 and the surface facing away from the inserting column 211 are both provided with anti-slip protrusions 2122, so that when a person grabs the operation bar 2121 and pulls out the inserting column 211, the person is limited by the anti-slip protrusions 2122, the operation bar 2121 can be effectively prevented from slipping off, and the operation is simple and convenient, and time and labor are saved.

In another embodiment of the present application, a clamping protrusion (not shown) extending along a circumferential direction of the outer circumferential wall of the insertion column 211 of the exhaust valve is provided, a clamping groove (not shown) extending along the circumferential direction of the inner circumferential wall of the exhaust hole 11 is provided, and the clamping protrusion is clamped in the clamping groove; or, be provided with the joint recess that extends along its circumferencial direction on the periphery wall of grafting post 211, set up the joint arch that extends along its circumferencial direction on the internal perisporium of exhaust hole 11, the protruding joint of joint is in the joint recess. When the inserting column 211 is inserted into the exhaust hole 11 in place, the clamping protrusion is clamped into the clamping groove, the inserting column 211 is connected with the exhaust hole 11 more tightly, on one hand, the false opening operation can be avoided, and the using stability and reliability are improved; on the other hand, the air tightness of the connection part of the insertion column 211 and the exhaust hole 11 can be increased, so that the air tightness of the exhaust valve is improved; preferably, the clamping protrusion is in interference fit with the clamping groove, so that the air tightness is better, and the air tightness of the exhaust valve is further improved.

In another embodiment of the present application, referring to fig. 2, 3 and 4, a mounting hole 121 is provided in the mounting portion 12 of the exhaust valve, the elastic sealing element 30 includes a mounting column 31, a sealing sheet 32 and a limiting column 33, the mounting column 31 is inserted into the mounting hole 121, one end of the mounting column 31 close to the elastic cover body 20 is vertically connected to the sealing sheet 32, the limiting column 33 is connected to the other end of the mounting column 31, an outer diameter of the limiting column 33 is greater than an aperture of the mounting hole 121, and a length of the mounting column 31 is greater than a depth of the mounting hole 121. The sealing sheet 32 is perpendicular to the axis of the exhaust hole 11 so as to seal the exhaust passage 14, the mounting column 31 is mounted in the mounting hole 121 of the mounting part 12, the sealing sheet 32 and the limiting column 33 are respectively positioned outside two ends of the mounting hole 121, in addition, the outer diameter of the limiting column 33 is larger than the aperture of the mounting hole 121, so that the limiting column 33 can avoid one end of the mounting column 31 from being separated from the mounting hole 121, the sealing sheet 32 can avoid the other end of the mounting column 31 from being separated from the mounting hole 121, and thus the sealing sheet 32 is fixed; simultaneously, the length of erection column 31 is greater than the degree of depth of mounting hole 121, so when the gas outgoing of the internal of bag, gaseous promotion sealing sheet 32 is outside the removal of bag, erection column 31 also moves along mounting hole 121 towards the outband for spacing post 33 supports tightly at an end of installation department 12, and the clearance appears between another terminal surface of sealing sheet 32 and installation department 12, and gaseous exhaust velocity is faster like this, and is more smooth and easy, and the exhaust effect of the bag body is higher, and the operation is simpler.

Furthermore, the limiting column 33 is conical, the big head end of the conical limiting column 33 is connected with the mounting column 31, and the maximum outer diameter of the conical limiting column 33 is larger than the aperture of the mounting hole 121, so that the structural material accumulation of the limiting column 33 is less, and the cost is low.

In another embodiment of the present application, referring to fig. 2 and 3, a plurality of protrusions 18 are provided on an end surface of the valve body 10 of the exhaust valve close to the elastic sealing sheet 32, and the protrusions 18 are arranged around the exhaust hole 11 at intervals. When the bag body compresses the object, the object can move towards the exhaust hole 11, and the protrusion 18 can jack the object, so that the exhaust hole 11 is prevented from being plugged by the object, in addition, the air can also enter the exhaust hole 11 from the gap between the protrusions 18, so that the air in the bag body is discharged more smoothly and thoroughly, and the compression effect of the bag body is better.

In another embodiment of the present application, there is provided an airtight bag comprising a bag body and the above-mentioned exhaust valve, and a valve body 10 is mounted on the bag body. Wherein, the bag body is also provided with an airtight zipper, and the articles such as luggage and the like can be conveniently placed in the bag body through the opening of the airtight zipper.

According to the airtight bag disclosed by the embodiment of the application, due to the adoption of the exhaust valve, after the gas in the bag body is exhausted, the elastic cover body 20 is directly inserted into the second end of the exhaust hole 11, so that the exhaust hole 11 is blocked, and the gas is prevented from leaking, and the bag body can be sealed through the interference fit of the elastic cover body 20 and the exhaust hole 11 on the basis of the sealing of the elastic sealing element 30, so that the gas tightness of the exhaust valve is improved, and further the gas tightness of the airtight bag is improved; in addition, the air-tight bag is exhausted only by pressing the bag body and pulling out or plugging the elastic cover body 20, so that the operation and the use are more convenient and quicker.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. An exhaust valve characterized by: the exhaust valve comprises a valve body, an elastic cover body and an elastic sealing element, wherein an exhaust hole which penetrates through the valve body along the axial direction of the valve body is formed in the valve body, an installation part and ribs are arranged at the first end of the exhaust hole, the installation part is arranged in the middle of the exhaust hole, an exhaust channel is formed between the outer peripheral wall of the installation part and the inner peripheral wall of the exhaust hole, one end of each rib is connected with the installation part, the other end of each rib is connected with the inner peripheral wall of the exhaust hole, and the elastic sealing element is installed on the installation part, is close to the second end of the exhaust hole and is used for opening; the elastic cover body is inserted into the second end of the exhaust hole and is in interference fit with the exhaust hole.

2. The discharge valve according to claim 1, wherein: the elastic cover body comprises an inserting part, a connecting strip and an installation ring, an installation ring groove extending along the circumferential direction of the valve body is formed in the peripheral wall of the valve body, the installation ring is sleeved outside the valve body and clamped into the installation ring groove, one end of the connecting strip is connected with the installation ring, the other end of the connecting strip is connected with the inserting part, and the inserting part is inserted into the second end of the exhaust hole.

3. The discharge valve according to claim 2, wherein: the plug part comprises a plug column and a disc sheet, the first end of the plug column is connected with the disc sheet and is perpendicular to the disc sheet, the second end of the plug column is plugged into the second end of the exhaust hole, the periphery of the disc sheet abuts against the end face, close to the second end of the exhaust hole, of the valve body, and the connecting strip is connected with the disc sheet.

4. The discharge valve according to claim 3, wherein: the second end of the inserting column is abutted against the elastic sealing element.

5. The discharge valve according to claim 3, wherein: the valve body is close to be provided with on the terminal surface of exhaust hole second end and enclose to locate the arch is established to the outer surrounding of disc piece, enclose establish bellied terminal surface with disc piece dorsad the surface of valve body flushes.

6. The discharge valve according to claim 5, wherein: the valve body is characterized in that a first notch and a second notch are formed in the end face of the surrounding protrusion, the first notch and the second notch are arranged at intervals along the circumferential direction of the surrounding protrusion, the connecting strip is contained in the first notch, an operating strip for holding by personnel is arranged on the peripheral wall of the disc sheet, and the operating strip is contained in the second notch and extends out of the valve body.

7. The discharge valve according to claim 3, wherein: the outer peripheral wall of the insertion column is provided with a clamping protrusion extending along the circumferential direction of the insertion column, the inner peripheral wall of the exhaust hole is provided with a clamping groove extending along the circumferential direction of the exhaust hole, and the clamping protrusion is clamped in the clamping groove;

or, be provided with the joint recess that extends along its circumferencial direction on the periphery wall of grafting post, it is protruding to set up the joint that extends along its circumferencial direction on the internal perisporium in exhaust hole, the protruding joint of joint in the joint recess.

8. The vent valve according to any one of claims 1 to 7, wherein: be provided with the mounting hole in the installation department, elastic sealing element includes erection column, gasket and spacing post, the erection column is worn to locate in the mounting hole, the erection column is close to the one end of elasticity lid with the gasket is connected perpendicularly, spacing post with the other end of erection column is connected, just the external diameter of spacing post is greater than the aperture of mounting hole, the length of erection column is greater than the degree of depth of mounting hole.

9. The vent valve according to any one of claims 1 to 7, wherein: the end face, close to the elastic sealing element, of the valve body is provided with a plurality of protrusions, and the protrusions are arranged around the exhaust holes at intervals.

10. An airtight bag characterized by: the exhaust valve comprises a bag body and the exhaust valve as claimed in any one of claims 1 to 9, wherein the valve body is mounted on the bag body.