CN116674856A - Suction nozzle packaging bag with self-closing and anti-overflow functions and application method thereof - Google Patents

Abstract

The invention relates to a suction nozzle packaging bag with self-closing and anti-overflow functions, which is suitable for containing hot drinks or cold drinks, and comprises: soft bag body, fixed connection is at the suction nozzle body of bag body opening one side, and the closing cap sets up the valve subassembly in the inside suction nozzle body, after the liquid content of splendid attire was heated to the temperature of settlement, opens the lid, and inside self-sealing structure starts to even drinker extrudees the bag body, liquid also can not spill over, realizes self-sealing function. The invention has the self-closing function: the packaging bag has an automatic closing function, can prevent liquid leakage under the condition that the valve component and the sealing cover are turned over accidentally or not closed timely, and reduces risks in the using process. Has convenient opening and closing mechanism: through the design of pressing release piece and setting element, the user can easily open and close the valve subassembly, realizes smooth drinking experience.

Description

Suction nozzle packaging bag with self-closing and anti-overflow functions and application method thereof

Technical Field

The invention belongs to the technical field of food packaging, and particularly relates to a suction nozzle packaging bag with self-sealing and anti-overflow functions.

Background

Nozzle packages are being used by an increasing number of consumers when they are holding liquids, due to their low cost and small size when not in use. The packaging bags with different sizes are widely used in the market, the large-size bag is suitable for storing water during outdoor travel, and the small-size bag is suitable for containing breakfast milk, soybean milk and the like.

The invention discloses a suction nozzle bag and a sealing mechanism thereof, which are flexibly packaged by single-hand operation, wherein the suction nozzle bag and the sealing mechanism thereof are provided with a smart sealing mechanism designed by a suction nozzle cover part, so that the suction nozzle bag can be conveniently and effectively sealed, the sealing of the suction nozzle bag can be reliably opened by single-hand operation, and the suction nozzle bag can be conveniently sealed by single hand after drinking. Therefore, the sealing device not only has good sealing effect, but also is very convenient to use.

However, at least two problems exist with current nozzle packages. Firstly, the stability of the suction nozzle packaging bag after containing liquid is insufficient, and the situation of overturning easily occurs. If the cap is not closed, the liquid will spill out. Secondly, breakfast milk generally needs to be heated, the body of the suction nozzle packaging bag is softer, and the body is easy to press when the cover is opened, so that the milk in the breakfast milk bag is squeezed, and the breakfast milk bag overflows and scalds hands.

Therefore, there is a need for a new type of nozzle package that solves both of these problems, making it safer and more practical.

Disclosure of Invention

The present invention has been made in view of the above problems occurring in the prior art, and it is an object of the present invention to provide a spout package having a self-sealing and anti-overflow function, which is capable of overcoming the aforementioned drawbacks of the prior art in terms of its structural and functional features.

The invention aims at realizing the following technical scheme: a spout package having self-sealing and spill-proof functions, adapted for holding hot or cold beverages, comprising: soft bag body, fixed connection is at the suction nozzle body of bag body opening one side, and the closing cap sets up the valve subassembly in the inside suction nozzle body, after the liquid content of splendid attire was heated to the temperature of settlement, opens the lid, and inside self-sealing structure starts to even drinker extrudees the bag body, liquid also can not spill over, realizes self-sealing function.

Preferably, the valve assembly comprises: the valve seat is integrally formed with the suction nozzle body, the retaining component is fixed on the bottom surface of the valve seat, the valve core is movably arranged on the valve seat and can slide up and down tightly relative to the valve seat, and the tension ring is arranged at the sliding part of the valve seat and the valve core.

Preferably, the valve core comprises a retaining matching part at the lowest part, the inner ring of the retaining matching part extends upwards to form a movable matching part, the diameter of the movable matching part is larger than that of the retaining matching part, a driving receiving part with a step surface is formed between the two parts, a circle of first through holes are annularly arranged on the peripheral surface of the movable matching part at the position, close to the lower edge, of the movable matching part, and a second through hole is arranged on the step surface in an array.

Preferably, the center of the valve seat is provided with a fluid main channel, the side wall of the fluid main channel forms a first circular ring, a second circular ring is adjacent to the first circular ring, one upward end of the first circular ring and one upward end of the second circular ring are open, one downward end of the first circular ring and one downward end of the second circular ring are respectively integrally formed or thermally connected with the suction nozzle body, a gap is reserved between the first circular ring and the second circular ring, the upper end of the first circular ring is open, the lower end of the second circular ring is closed, and the gap is relatively smaller at one section of the upper part; the gap is relatively larger at one section of the lower part, a circle of third through holes are annularly arranged on the peripheral surface of the side wall of the second circular ring in an array manner, a circle of fourth through holes are annularly arranged on the peripheral surface of the first circular ring in an array manner, and the heights of the center positions of the third through holes and the center positions of the fourth through holes are the same.

Preferably, the suction nozzle body comprises a joint part matched with the sealing cover, a ring body with a certain thickness and a wall thickness is arranged below the joint part, a transition body connected with the body is arranged below the ring body, and mounting holes with the inclined directions of being low in the inner side and high in the outer side are respectively arranged on the two sides of the width direction of the bag body.

Preferably, the package further comprises: the automatic sealing assembly is arranged outside the suction nozzle body and located on two sides of the width direction of the bag body, the automatic sealing assembly comprises a driving piece which is installed in a mounting hole and can slide tightly, two ends of the driving piece are arc surfaces, a guide boss which is used for preventing the driving piece from rotating is arranged in the mounting hole, a groove matched with the guide boss is formed in the driving piece, and the guide boss is connected with the driving piece through a rubber band.

Preferably, the self-sealing assembly further comprises a positioning piece arranged below the driving piece and a pressing unlocking piece fixedly arranged in the middle of the positioning piece, a platform is arranged at the joint of the torus and the transition body, a release groove with a far-low near-high inclined plane is arranged at the position, opposite to the driving piece, of the platform, and a stopping table is arranged at the position, close to the torus, of the release groove.

Preferably, the upper end of the positioning piece is provided with an inclined plane, the thickness of the lower end is thicker than that of other parts, the bottom contact surface of the lower end is positioned on the stopping table, the inclined plane of the upper end is provided with an arc in the width direction, the arc is matched with the outer peripheral surface of the driving piece, the upper end of the torus, which is close to the positioning piece, is fixedly provided with a connecting piece for movably connecting the positioning piece, the connecting piece and the torus are provided with larger fit gaps in all directions, the whole height of the positioning piece is set to be that when the driving piece slides outwards, the highest point of the inclined plane of the positioning piece can abut against the outer surface of the driving piece.

Preferably, the positioning member is made of plastic material with rebound performance.

The invention aims at the problems and also provides a drinking method for the suction nozzle packaging bag, and the aim of the invention is realized by the following technical scheme:

the method comprises the following steps:

a. opening the cover;

b. opening the valve assembly: the two pressing unlocking pieces are pressed by both hands, so that the heads of the two positioning pieces are outwards expanded, the interference to the driving pieces is eliminated, a drinker sucks the valve core to move up to a high position, the two driving pieces are ejected outwards against the elasticity of the rubber band, the two pressing unlocking pieces are released by fingers, and the two driving pieces are respectively positioned by the two positioning pieces;

c. drinking: at this time, the valve assembly is in an open state, and the liquid flows out of the second through hole after passing through the third through hole and the fourth through hole from the first through hole;

d. ending drinking: when drinking is finished, one of the unlocking pieces is pressed down, and the driving piece pushes the valve core back to the low position under the elastic action of the rubber band, so that the valve assembly is closed;

e. sealing the packaging bag: after the valve component is closed, the sealing cover can be covered on the suction nozzle body so as to keep the liquid in the packaging bag fresh;

f. preventing accidental leakage: when the suction nozzle packaging bag is not completely drunk and the valve assembly is not timely closed or capped and capped, the positioning piece is impacted by vibration and slides into the release groove from the stopping table, interference to the driving piece is eliminated, the driving piece rapidly moves towards the inside of the suction nozzle body under the action of the rubber band, the valve core is pushed to a low position, and outward flowing liquid is blocked, so that an automatic sealing function is realized.

In summary, compared with the prior art, the invention has the following advantages:

1. self-closing function: the packaging bag has an automatic closing function, can prevent liquid leakage under the condition that the valve component and the sealing cover are turned over accidentally or not closed timely, and reduces risks in the using process.

2. Convenient opening and closing mechanism: through the design of pressing release piece and setting element, the user can easily open and close the valve subassembly, realizes smooth drinking experience.

3. Safety: the design of the valve component can ensure that the liquid cannot be opened when being heated to high temperature, thereby ensuring that a user cannot be scalded.

4. Keep the liquid fresh: the double closing design of the sealing cover and the valve component can keep the liquid in the packaging bag fresh and prolong the quality guarantee period of the product.

In summary, the suction nozzle packaging bag has the advantages of self-closing function, convenient opening and closing mechanism, safety, liquid freshness keeping and the like, and provides comfortable drinking experience for users. Meanwhile, the product has the characteristics of flexible use, portability, storage and the like, and becomes a unique and practical packaging product in the market.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the hidden bag of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of the nozzle body partially broken away for ease of viewing the internal fit;

FIG. 5 is an exploded view of the components of the present invention;

FIG. 6 is a front view of the present invention with the pouch and closure hidden;

FIG. 7 is a perspective view, in full section, of FIG. 6 at A-A;

FIG. 8 is a perspective view of the valve cartridge;

fig. 9 is a full sectional perspective view at B-B in fig. 8.

The marks in the figure: the bag body 1, the spout body 2, the cap 3, the valve assembly 4, the valve seat 41, the stopper 42, the valve element 43, the tension ring 5, the stopper fitting portion 431, the movement fitting portion 432, the step face 001, the drive receiving portion 433, the first through hole 002, the second through hole 003, the fluid main passage 411, the first annular ring 412, the second annular ring 413, the third through hole 004, the fourth through hole 005, the joint portion 21, the annular ring 22, the transition body 23, the mounting hole 006, the self-closing assembly 6, the driving member 61, the guide boss 63, the rubber band 62, the positioning member 64, the pressing unlocking member 65, the platform 211, the release groove 212, the docking stand 213, the connecting member 221.

Detailed Description

The invention is further described below with reference to embodiments shown in the drawings in which:

example 1

As shown in fig. 1-2 and 5, a spout package having self-sealing and spill-proof functions is adapted for holding hot or cold beverages. When the cover is not closed, the opening can be automatically closed immediately after the cover is turned over, so that the liquid leakage is prevented. Meanwhile, after the contained liquid content is heated to a set temperature, the cover is opened, and the automatic sealing structure in the cover is started, so that even if a drinker squeezes the bag body, the liquid cannot overflow.

The packaging bag structure comprises: the soft bag body 1 is made of food-grade materials and can bear high and low temperatures; the suction nozzle body 2 is fixedly connected to one side of the opening of the bag body 1, so that a drinker can conveniently suck the suction nozzle. And the sealing cover 3 protects the suction nozzle body 2 and prevents dust and pollution. The valve component 4 is arranged in the suction nozzle body 2 to realize an automatic sealing function.

The valve assembly 4 comprises: the valve seat 41 integrally formed with the suction nozzle body 2, the retaining member 42 fixed on the bottom surface of the valve seat 41, the valve core 43 movably mounted on the valve seat 41 and capable of sliding up and down tightly relative to the valve seat 41, and realizing the automatic sealing function.

A tension ring 5 is arranged at the sliding part of the valve seat 41 and the valve core 43, the tension ring 5 is made of a heat sensitive material, and the sliding of the valve core 43 can be limited when the thermal expansion range is set at a temperature exceeding 60 ℃. This design ensures that the tensioner ring 5 expands thermally during heating, thereby limiting slippage of the valve element 43 and further ensuring safety for drinkers.

The specific structure of the valve core 43 is shown in fig. 8-9. The valve core 43 includes a retaining engaging portion 431 having a circular ring-shaped lowermost portion, and an inner ring of the retaining engaging portion 431 extends upward to form a moving engaging portion 432. The diameter of the movement engagement portion 432 is larger than that of the non-return engagement portion 431, and a drive receiving portion 433 of the stepped surface 001 is formed therebetween. A circle of first through holes 002 are annularly arranged on the peripheral surface of the movable matching portion 432 near the lower edge, and second through holes 003 are annularly arranged on the step surface 001.

The specific structure of the valve seat 41 is shown in fig. 5. The center of the valve seat 41 is provided with a main fluid channel 411 with a circular cross section, and the side wall of the main fluid channel 411 forms a first circular ring 412. Adjacent to the first ring 412 is a second ring 413. The upward ends of the first ring 412 and the second ring 413 are open, and the downward ends are respectively integrally formed or thermally connected with the nozzle body 2. A gap is left between the first ring 412 and the second ring 413, the upper end is open, and the lower end is closed. The gap is relatively small in a section of the upper portion where the gap is for accommodating the moving mating portion 432; the gap is relatively large at a section of the lower portion where the gap is for receiving the stop fitting 431. A third ring of through holes 004 is arranged on the circumferential surface of the side wall of the second ring 413 in an annular array, and a fourth ring of through holes 005 is arranged on the circumferential surface of the first ring 412 in an annular array. The third through hole 004 is at the same height as the fourth through hole 005 in its center position.

The cooperation of the valve core 43 and the valve seat 41 is shown in fig. 7. Fig. 7 shows the state in which the valve body 43 is in the upper position. In this state, the first through hole 002 communicates with the third through hole 004 and the fourth through hole 005. When a drinker sucks, the negative pressure causes the liquid to flow out from the second through hole 003 after passing through the first through hole 002, the third through hole 004 and the fourth through hole 005.

When the liquid is not heated to the set temperature, the liquid can be drunk normally, and when the liquid is heated to the set temperature, the tension ring 5 is heated to expand, so that the sliding of the valve core 43 is limited, the overflow of the liquid is prevented, and the safety of drinkers is ensured.

As shown in fig. 4, the suction nozzle body 2 includes a joint portion 21 matched with the cover 3, a ring body 22 with a certain thickness and wall thickness is arranged below the joint portion 21, a transition body 23 connected with the body 1 is arranged below the ring body 22, and mounting holes 006 with inclined directions of being lower inside and higher outside are respectively arranged at two sides of the ring body 22 in the width direction of the bag body 1. The packaging bag further comprises: self-closing members 6 provided outside the nozzle body 2 and located on both sides of the bag body 1 in the width direction.

The self-closing assembly 6 includes a driving member 61 installed in the installation hole 006 to be slidably movable and having arc surfaces at both ends. The mounting hole 006 is provided therein with a guide boss 63 for preventing rotation of the driving member 61, and the driving member 61 is provided with a groove matching the guide boss. The guide boss is connected with the driving member 61 by a rubber band 62. In a normal state, the rubber band 62 makes the circular arc surface of the lower end of the driving member 61 press against the upper edge of the driving receiving portion 433. The elastic force of the elastic band 62 brings the spool 43 to a low position, i.e., a position where the moving engagement portion 432 has no hole is located between the third through hole 004 and the fourth through hole 005, thereby cutting off communication therebetween.

The self-closing assembly 6 further includes a positioning member 64 provided below the driving member 61 and a pressing unlocking member 65 fixedly provided at the middle of the positioning member 64. A platform 211 is provided at the junction of the torus 22 and the transition 23. The platform 211 is provided with a release slot 212 with a far lower and near higher inclined surface at a position opposite to the driving piece 61, and a stopping table 213 is arranged at a position of the release slot 212 close to the torus 22. In normal state, the positioning member 64 is movably positioned between the docking table 213 and the driving member 61. Referring to fig. 3, the positioning member 64 has a slope at an upper end, a thickness of a lower end is thicker than that of other parts, a bottom contact surface of the lower end is positioned on the stopping table 213, and the slope at the upper end has a curvature in a width direction, and the curvature matches an outer circumferential surface of the driving member 61. A connecting piece 221 for movably connecting the positioning piece 64 is fixedly arranged at the upper end of the annular body 22 near the positioning piece 64, and the connecting piece and the positioning piece have larger fit clearances in all directions. The overall height of the positioning member 64 is set such that the highest point of the inclined surface of the positioning member 64 can abut against the outer surface of the driving member 61 when the driving member 61 slides outwardly.

When the drink is not opened, the inclined surface of the positioning piece 64 is abutted against the arc surface at the upper end of the driving piece 61, and the positioning piece 64 is made of plastic with rebound performance. When drinking is to be started, the two pressing unlocking pieces 65 are pressed simultaneously, and the heads of the two positioning pieces 64 are expanded outwards, so that the driving piece 61 is not abutted. The drinker sucks (can press the bag body 1 at the same time) the internal liquid drives the valve core to move up to the high position, and the valve core ejects the two driving pieces 61 outwards against the elasticity of the rubber band. At this time, the finger releases the two pressing unlocking pieces 65, the two driving pieces 61 are respectively positioned by the two positioning pieces 64, and the subsequent sucking can be relaxed and smooth. To close the valve assembly 4, only one of the unlocking members 65 is pressed down, and the driving member 61 pushes the valve core back to the low position by the elastic force of the rubber band.

When the liquid in the suction nozzle packaging bag is not completely drunk and the valve assembly 4 is not closed or the sealing cover 3 is covered in time, the suction nozzle packaging bag is overturned, and one side of the width of the bag body faces downwards due to the structure. At this time, the positioning piece 64 in the corresponding direction receives a shock. Under the action of vibration and self weight, the lower end surface of the positioning member 64 slides into the release groove 212 from the rest table 213, eliminating interference of the positioning member 64 against the driving member 61. The driving member 61 is rapidly moved toward the inside of the nozzle body 2 by the rubber band, thereby pushing the valve core 43 to a low position and blocking the outwardly flowing liquid.

The automatic sealing function can effectively prevent liquid leakage when the packaging bag is overturned, and the practicability of the suction nozzle packaging bag is improved. By combining the valve assembly and the self-sealing assembly, the suction nozzle packaging bag can provide more convenient and safe drinking experience for users. Indeed, if the overall size of the spout package is small or the shock is small when tipped over, it may not be possible to trigger the action of the positioning member 64, which is one of the limitations of the present invention. In order to solve this problem, the following modifications can be considered:

1. the design of the positioning member 64 and the release slot 212 are adjusted to trigger the action with less shock. For example, decreasing the bevel angle of the relief slot 212 allows the positioning member 64 to slide into the relief slot more easily.

2. Increasing sensitivity: a more sensitive trigger mechanism, such as a spring or magnetic element, may be added to the positioning member 64 or the release slot 212 to ensure that the action of the positioning member 64 is triggered even with less shock.

3. Adding a gravity sensor: a gravity sensor is mounted in the spout package to automatically trigger the action of the positioning member 64 when a tipping is detected, thereby achieving an automatic closure.

4. Adding a tilt switch: a tilt switch is mounted in the spout package to automatically trigger the action of the positioning member 64 when a tipping is detected, thereby achieving an automatic closure.

The improved scheme can be selected and optimized according to actual demands and manufacturing cost so as to improve the self-sealing performance of the suction nozzle packaging bag under different conditions.

According to the design and self-closing function of the suction nozzle packaging bag, the following drinking method is as follows:

1. the cover 3 is opened.

2. Opening the valve assembly: pressing the two pressing unlocking members 65 with both hands expands the heads of the two positioning members 64 outward, eliminating interference with the driving member 61. The drinker sucks (sucks while pressing the bag body 1) to move the valve core 43 up to the high position and push out the two driving pieces 61 against the elastic force of the rubber band. The finger releases the two pressing unlocking pieces 65 and the two driving pieces 61 will be positioned by the two positioning pieces 64, respectively.

3. Drinking: the valve assembly 4 is now in an open position so that a drinker can easily drink the liquid in the package. The liquid flows out from the first through hole 002 through the third through hole 004 and the fourth through hole 005 and then from the second through hole 003.

4. Ending drinking: when drinking is finished, one of the unlocking pieces 65 is pressed down, and the driving piece 61 pushes the valve core 43 back to the low position under the elastic force of the rubber band, so that the valve assembly 4 is closed.

5. Sealing the packaging bag: after the valve assembly 4 is closed, the lid 3 can be closed back onto the spout body 2, if desired, to keep the liquid in the package fresh.

6. Preventing accidental leakage: if the spout package is not completely consumed and the closing of the valve assembly 4 or the capping of the cap 3 is not performed in time, the positioning member 64 is subjected to a shock impact when being tipped over, and slides into the release groove 212 from the rest table 213, eliminating interference with the driving member 61. The driving member 61 rapidly moves to the inside of the suction nozzle body 2 under the action of the rubber band, pushes the valve core 43 to a low position, and blocks the liquid flowing outwards, thereby realizing an automatic closing function.

Through the drinking method, a user can drink the liquid in the suction nozzle packaging bag easily and conveniently, and meanwhile, under the unexpected conditions of overturning and the like, the self-closing function can effectively prevent the liquid from leaking.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A spout package having self-sealing and spill-proof functions, adapted for holding hot or cold beverages, comprising: soft bag body (1), suction nozzle body (2) of fixed connection in bag body (1) opening one side, closing cap (3), its characterized in that still includes valve assembly (4) of setting up in suction nozzle body (2) inside, and after the liquid content of splendid attire was heated to the temperature of settlement, open the lid, inside self-sealing structure starts to even drinker extrudees the bag body, liquid also can not spill over, realizes the self-sealing function.

2. The spout package according to claim 1, wherein the valve assembly (4) comprises: a valve seat (41) integrally formed with the suction nozzle body (2), a retaining component (42) fixed on the bottom surface of the valve seat (41), a valve core (43) movably mounted on the valve seat (41) and capable of sliding up and down tightly relative to the valve seat (41), and a tensioning ring (5) arranged at the sliding part of the valve seat (41) and the valve core (43).

3. The suction nozzle packing bag according to claim 2, wherein the valve core (43) comprises a stop matching part (431) at the lowest part, an inner ring of the stop matching part (431) extends upwards to form a moving matching part (432), the diameter of the moving matching part (432) is larger than that of the stop matching part (431), a driving receiving part (433) of a step surface (001) is formed between the moving matching part (432), a circle of first through holes (002) are annularly arranged on the peripheral surface of the moving matching part (432) near the lower edge, and a circle of second through holes (003) are annularly arranged on the step surface (001).

4. The suction nozzle packaging bag according to claim 2, characterized in that the center of the valve seat (41) is provided with a fluid main channel (411), the side wall of the fluid main channel (411) forms a first circular ring (412), a second circular ring (413) is adjacent to the first circular ring (412), one upward end of the first circular ring (412) and one upward end of the second circular ring (413) are open, the downward end is respectively integrally formed or thermally connected with the suction nozzle body (2), a gap is reserved between the first circular ring (412) and the second circular ring (413), the upper end is open, the lower end is closed, and the gap is relatively smaller in a section of the upper part; the gap is relatively larger at one section of the lower part, a circle of third through holes (004) are formed in the annular array of the peripheral surface of the side wall of the second circular ring (413), a circle of fourth through holes (005) are formed in the annular array of the peripheral surface of the first circular ring (412), and the heights of the third through holes (004) and the center positions of the fourth through holes (005) are the same.

5. The suction nozzle packaging bag according to claim 2, wherein the suction nozzle body (2) comprises a joint part (21) matched with the sealing cover (3), a ring body (22) with a certain thickness and a wall thickness is arranged below the joint part (21), a transition body (23) connected with the body (1) is arranged below the ring body (22), and mounting holes (006) with inclined directions of inner low and outer high are respectively arranged on two sides of the width direction of the bag body (1) of the ring body (22).

6. The spout package of claim 5, further comprising: the automatic sealing component (6) is arranged outside the suction nozzle body (2) and located on two sides of the width direction of the bag body (1), the automatic sealing component (6) comprises a driving piece (61) which is installed in a mounting hole (006) and can slide tightly, two ends of the driving piece are arc surfaces, a guide boss (63) for preventing the driving piece (61) from rotating is arranged in the mounting hole (006), a groove matched with the guide boss is formed in the driving piece (61), and a connection is formed between the guide boss and the driving piece (61) through a rubber band (62).

7. The suction nozzle packaging bag according to claim 5, wherein the self-closing assembly (6) further comprises a positioning piece (64) arranged below the driving piece (61) and a pressing unlocking piece (65) fixedly arranged in the middle of the positioning piece (64), a platform (211) is arranged at the joint of the torus (22) and the transition body (23), a release groove (212) with a far-low near-high inclined plane is arranged at the position of the platform (211) opposite to the driving piece (61), and a stopping table (213) is arranged at the position of the release groove (212) adjacent to the torus (22).

8. The suction nozzle packing bag according to claim 7, wherein the upper end of the positioning member (64) is provided with an inclined surface, the thickness of the lower end is thicker than that of other parts, the bottom contact surface of the lower end is positioned on the stopping table (213), the inclined surface of the upper end is provided with an arc in the width direction, the arc is matched with the outer circumferential surface of the driving member (61), the upper end of the torus (22) close to the positioning member (64) is fixedly provided with a connecting member (221) for movably connecting the positioning member (64), the connecting member and the positioning member have larger fit gaps in all directions, and when the whole height of the positioning member (64) is set to be that the driving member (61) slides outwards, the highest point of the inclined surface of the positioning member (64) can abut against the outer surface of the driving member (61).

9. The spout package of claim 7 wherein the positioning member (64) is a plastic member having resilient properties.

10. A drinking method using the spout package as claimed in any one of claims 1 to 9, characterized by the steps of:

a. opening the closure (3);

b. opening the valve assembly: the two pressing unlocking pieces (65) are pressed by both hands, so that the heads of the two positioning pieces (64) are outwards expanded, the interference to the driving pieces (61) is eliminated, a drinker sucks the valve core (43) upwards to a high position, the two driving pieces (61) are ejected outwards against the elastic force of the rubber band, the two pressing unlocking pieces (65) are released by fingers, and the two driving pieces (61) are respectively positioned by the two positioning pieces (64);

c. drinking: at the moment, the valve component (4) is in an open state, and liquid flows out of the second through hole (003) from the first through hole (002) through the third through hole (004) and the fourth through hole (005);

d. ending drinking: when drinking is finished, one of the unlocking pieces (65) is pressed down, and the driving piece (61) pushes the valve core (43) back to the low position under the action of the elastic force of the rubber band, so that the valve assembly (4) is closed;

e. sealing the packaging bag: after the valve component (4) is closed, the sealing cover (3) can be covered back on the suction nozzle body (2) so as to keep the liquid in the packaging bag fresh;

f. preventing accidental leakage: when the suction nozzle packaging bag is not completely drunk and the closing or capping sealing cover (3) of the valve assembly (4) is not timely executed, the positioning piece (64) is subjected to vibration impact when being overturned, and slides into the release groove (212) from the stopping table (213), so that the interference to the driving piece (61) is eliminated, the driving piece (61) rapidly moves towards the inside of the suction nozzle body (2) under the action of the rubber band, the valve core (43) is pushed to a low position, and the outward flowing liquid is blocked, so that the automatic sealing function is realized.