Discharging nozzle and packaging assembly

By designing the connection and sealing structure of the discharge nozzle, the problem of air entering after the container discharge port is opened is solved, achieving sealed preservation of the product, extending the storage time and maintaining freshness.

CN223822451UActive Publication Date: 2026-01-23ZHEJIANG GUMING TECH CO LTD
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Patent Information

Application Number
CN202520588358.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-31
Publication Date
2026-01-23
Estimated Expiration
2035-03-31

AI Technical Summary

Technical Problem

When using the product, air enters the container after the outlet is opened, causing the product to oxidize, affecting the preservation effect and reducing the shelf life.

Method used

Design a discharge nozzle, including a connecting part and a sealing part. The connecting part is connected to the container, and the sealing part is composed of a main body and an elastic part. In the first state, the communication port of the sealing part is located outside the flow port, keeping the container sealed. In the second state, pressure is applied to compress the elastic part, and the communication port is connected to the flow port, and the inner cavity of the container is connected to the outside.

Benefits of technology

It effectively reduces the product's contact with air, improves the product's shelf life and freshness, and ensures that the container remains sealed when not in use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a discharging nozzle and a packaging assembly. A circulation opening is formed in a connecting part of the discharging nozzle, and the peripheral side of the connecting part is connected with the opening end of a container; the plugging part comprises a main body part and an elastic part, one end of the main body part extends into the circulation opening, the other end of the main body part extends out of the circulation opening, the main body part is provided with an inner cavity communicated with the outside, the peripheral side of the main body part is provided with a communication opening communicated with the inner cavity of the main body part, and one end of the elastic part abuts against the end, extending out of the circulation opening, of the main body part; the other end of the elastic part is used for abutting against the connecting part. In the first state, the elastic part is in the return state, the communicating opening of the blocking part is located outside the circulating opening, and the container is prevented from being communicated with the outside. In the second state, the elastic part is in a compressed state, the communicating port of the plugging part is located in the circulation port, and the inner cavity of the container communicates with the outside. The blocking part enables the inner cavity of the container to be communicated with the outside only when products need to be canned or taken out, the container is in a sealed state under other conditions, the preservation time of the products is prolonged, and the freshness of the products is improved.
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Description

Technical Field

[0001] This application relates to the field of food preservation technology, and in particular to a discharge nozzle and packaging component. Background Technology

[0002] Currently, most products on the market (solid or liquid), such as rice, beverages, wine, medicines, or condiments, need to be sealed for storage to extend their shelf life.

[0003] Normally, when people use a product, they open the product container's outlet to use the product. However, during the opening process, air enters the container, which can easily oxidize the product, affecting its freshness and reducing its shelf life. Utility Model Content

[0004] Based on this, a discharge nozzle and packaging component are provided. The discharge nozzle can prevent air from directly entering the container during the opening process, thereby improving the product's freshness and extending its shelf life.

[0005] To this end, in a first aspect, embodiments of this application provide a discharge nozzle, comprising: a connecting portion having a flow port, the periphery of which is used to connect to the open end of a container; a sealing portion including a main body and an elastic portion, one end of the main body being used to extend into the flow port, the other end of the main body extending out of the flow port, the main body having an inner cavity for communicating with the outside, the periphery of the main body having a communication port communicating with the inner cavity of the main body, one end of the elastic portion abutting against the end of the main body extending out of the flow port, and the other end of the elastic portion abutting against the connecting portion; in a first state, the elastic portion is in a return state, so that the communication port of the sealing portion is located outside the flow port, preventing the inner cavity of the container from communicating with the outside; in a second state, pressure is applied to the sealing portion, so that the elastic portion is in a compressed state, so that the communication port of the sealing portion is located in the flow port and communicating with the flow port, and the inner cavity of the container is communicating with the outside.

[0006] In one embodiment, the container further includes a cover having an inner cavity for covering the sealing portion, and the cover is detachably connected to the connecting portion; in a third state, the cover is connected to the connecting portion, and the container is in a sealed state.

[0007] In one embodiment, the elastic portion is integrally formed with the main body portion, and the elastic portion is spiral-shaped.

[0008] In one embodiment, a clearance opening is provided at the connection between the main body and the elastic part.

[0009] In one embodiment, a first engaging portion is provided at the end of the main body opposite to the connecting portion, and a second engaging portion protrudes from the interior of the cover, the first engaging portion and the second engaging portion being used for engaging.

[0010] In one embodiment, the outer diameter of the first engaging portion gradually decreases in the direction toward the cover, and / or the inner diameter of the second engaging portion gradually increases in the direction toward the connecting portion.

[0011] In one embodiment, the cover has a sealing portion inside for extending into the inner cavity of the main body, and the wall thickness of the sealing portion gradually decreases in the direction toward the main body.

[0012] In one embodiment, the inner wall of the cover is provided with a first thread, and the outer periphery of the connecting part is provided with a second thread, and the cover and the connecting part are connected by the first thread and the second thread.

[0013] In one embodiment, the connecting portion has an abutting plane on the side of the second thread facing the cover, and the elastic portion abuts against the abutting plane.

[0014] Secondly, embodiments of this application provide a packaging component, including a container and a discharge nozzle as described in any of the above claims, wherein the container is connected to the discharge nozzle via a connection portion.

[0015] According to the embodiments of this application, the discharge nozzle and packaging assembly include a connecting part and a sealing part; the connecting part is provided with a flow port, and the periphery of the connecting part is used to connect with the open end of the container; the sealing part includes a main body and an elastic part, one end of the main body is used to extend into the flow port, and the other end of the main body extends out of the flow port. The main body is provided with an inner cavity for communicating with the outside, and the periphery of the main body is provided with a communication port communicating with the inner cavity of the main body. One end of the elastic part abuts against the end of the main body that extends out of the flow port, and the other end of the elastic part abuts against the connecting part; in a first state, the elastic part is in a return state so that the communication port of the sealing part is located outside the flow port, preventing the inner cavity of the container from communicating with the outside; in a second state, pressure is applied to the sealing part so that the elastic part is in a compressed state so that the communication port of the sealing part is located in the flow port and communicates with the flow port, and the inner cavity of the container communicates with the outside. The sealing section allows the product inside the container to be in contact with the outside environment only when it needs to be filled or removed. Otherwise, the container remains sealed, thereby reducing the chance of the product coming into contact with the outside air and improving the product's shelf life and freshness. Attached Figure Description

[0016] Figure 1 This is an exploded view of a discharge nozzle provided in an embodiment of this application;

[0017] Figure 2 This diagram shows a schematic representation of the discharge nozzle provided in an embodiment of this application in its first state.

[0018] Figure 3 Show Figure 2 The diagram shows a cross-sectional view of the discharge nozzle along direction BB.

[0019] Figure 4 This diagram shows a schematic representation of the discharge nozzle provided in an embodiment of this application in a second state.

[0020] Figure 5 Show Figure 4 The cross-sectional view of the discharge nozzle along the CC direction is shown.

[0021] Figure 6 This illustration shows a structural schematic diagram of a cover provided in an embodiment of this application;

[0022] Figure 7 This diagram shows the structure of the discharge nozzle provided in the embodiment of this application in the third state;

[0023] Figure 8 Show Figure 7 The diagram shows a cross-sectional view of the discharge nozzle along direction AA.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Connecting part; 11. Flow port; 12. Second thread; 121. Abutting plane; 2. Sealing part; 21. Main body; 211. Connecting port; 212. First engaging part; 22. Elastic part; 23. Relief port; 3. Cover; 31. Second engaging part; 32. Sealing part; 33. First thread. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0028] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0029] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Normally, when people use a product, they open the product container's outlet to use the product. However, during the opening process, air enters the container, which can easily oxidize the product, affecting its freshness and reducing its shelf life.

[0031] To solve the above problems, refer to Figures 1-5 , Figure 1 This is an exploded view of a discharge nozzle provided in an embodiment of this application. Figure 2 This diagram shows a schematic representation of the discharge nozzle provided in an embodiment of this application in its first state. Figure 3 Show Figure 2 The diagram shown is a cross-sectional view of the discharge nozzle along direction BB. Figure 4 This diagram shows a schematic representation of the discharge nozzle provided in an embodiment of this application in a second state. Figure 5 Show Figure 4 The diagram shows a cross-sectional view of the discharge nozzle along the CC direction.

[0032] This application provides a discharge nozzle, which includes a connecting part 1 and a sealing part 2. The connecting part 1 is provided with a flow port 11, and the periphery of the connecting part 1 is used to connect to the open end of a container. The sealing part 2 includes a main body 21 and an elastic part 22. One end of the main body 21 is used to extend into the flow port 11, and the other end of the main body 21 extends out of the flow port 11. The main body 21 is provided with an inner cavity for communicating with the outside. The periphery of the main body 21 is provided with a communication port 211 communicating with the inner cavity of the main body 21. The elastic part 22... One end of the elastic part 22 abuts against the end of the main body 21 that extends out of the flow port 11, and the other end of the elastic part 22 is used to abut against the connecting part 1; in the first state, the elastic part 22 is in the return state so that the communication port 211 of the sealing part 2 is located outside the flow port 11, preventing the inner cavity of the container from communicating with the outside; in the second state, pressure is applied to the sealing part 2 so that the elastic part 22 is in the compressed state so that the communication port 211 of the sealing part 2 is located in the flow port 11 and communicates with the flow port 11, and the inner cavity of the container communicates with the outside.

[0033] It should be understood that the container in this application refers to an item with an inner cavity. The container can be a bag, box, or other similar product, and this application does not impose any restrictions on it. This application also does not limit the material of the container; the material can be plastic, wood, or iron, etc. The product inside the container can be a liquid, gas, or a powdered or granular solid. The discharge nozzle includes a connecting part 1, which has a flow port 11 that penetrates the connecting part 1 and communicates with the inner cavity of the container. The periphery of the connecting part 1 is connected to the container. The connection method can be a fixed connection or a detachable connection, and this application does not impose any restrictions. However, the connection between the connecting part 1 and the container is a sealed connection to prevent outside air from entering the inner cavity of the container through the connection, which could affect the freshness or shelf life of the item inside.

[0034] The discharge nozzle includes a sealing part 2, which includes a main body 21 and an elastic part 22. The main body 21 has an inner cavity in the middle. One end of the main body 21 is open along its length and the other end is closed. The closed end of the main body 21 extends into the flow port 11, and the open end of the main body 21 extends out of the flow port 11. A connecting port 211 is provided on the periphery of the main body 21. The connecting port 211 penetrates the main body 21 and communicates with the inner cavity of the main body 21. This application does not limit the number of connecting ports 211. There may be one, two or more connecting ports 211. In one example, there are four connecting ports 211 arranged at intervals along the periphery of the main body 21. When the communication port 211 of the main body 21 is located in the inner cavity of the connecting part 1, the communication port 211 communicates with the inner cavity of the connecting part 1, so that the inner cavity of the main body 21 communicates with the inner cavity of the container. When the communication port 211 of the main body 21 extends out of the flow port 11 of the connecting part 1, the inner cavity of the main body 21 is closed with the inner cavity of the container.

[0035] The elastic part 22 is disposed on the periphery of the main body 21 and located on the periphery of the connecting part 1. This application does not limit the material of the elastic part 22. The elastic part 22 can be a spring or other elastic material. One end of the elastic part 22 abuts against the connecting part 1, and the other end of the elastic part 22 abuts against the main body 21. When the communication port 211 of the main body 21 is located in the inner cavity of the connecting part 1, the elastic part 22 is in a compressed state. When the communication port 211 of the main body 21 extends out of the inner cavity of the connecting part 1, the elastic part 22 is in a returned state.

[0036] In order to prevent the main body 21 from detaching from the connecting part 1, the diameter of the end of the main body 21 that extends into the inner cavity of the connecting part 1 is larger than the diameter of the flow port 11 of the connecting part 1. The lower end of the main body 2 may be provided with a sealing ring or a sealing material. When the connecting port 211 of the sealing part 2 extends out of the flow port 11 of the connecting part 1, the lower end of the sealing part 2 is still located in the flow port 11 and abuts against the flow port 11, thereby sealing the flow port 11 with the lower end of the sealing part 2.

[0037] Reference Figure 2 and Figure 3 In the first state, the elastic part 22 is in the return state, and the sealing part 2 is partially popped out, so that the connecting port 211 of the sealing part 2 extends out of the flow port 11 of the connecting part 1. The lower end of the sealing part 2 is still in the flow port 11 and seals the flow port 11, so that the connecting port 211 is not connected to the inner cavity of the connecting part 1, that is, not connected to the inner cavity of the container. At this time, the container is still in a sealed state, reducing the product's contact with air and improving the product's shelf life and freshness.

[0038] Reference Figure 4 and Figure 5 In the second state, external pressure is applied to the sealing part 2, causing the elastic part 22 to be in a compressed state. The connecting port 211 of the sealing part 2 is located in the flow port 11 and is connected to the flow port 11. The inner cavity of the container is connected to the outside, so as to facilitate filling the product into the container and to facilitate taking the product out of the container.

[0039] This application, through the provision of a connecting part 1 and a sealing part 2, connects the connecting part 1 to the container, and the sealing part 2 allows the product inside the container to communicate with the outside world only when it needs to be filled or removed. Otherwise, the container remains sealed, thereby reducing the chance of the product inside the container coming into contact with the outside air and improving the product's shelf life and freshness.

[0040] Reference Figure 1 , Figures 6-8 , Figure 6 This illustration shows a structural diagram of a cover provided in an embodiment of this application. Figure 7 This diagram shows the structure of the discharge nozzle provided in the embodiment of this application in the third state. Figure 8 Show Figure 7 The diagram shows a cross-sectional view of the discharge nozzle along direction AA.

[0041] In some optional embodiments, a cover 3 is also included, which has an inner cavity for covering the sealing part 2. The cover 3 is detachably connected to the connecting part 1. In the third state, the cover 3 is connected to the connecting part 1, and the container is in a sealed state. The cover 3 and the connecting part 1 are detachably connected, and the connection method can be a threaded connection or a connection through a fastener. This application does not impose any restrictions. The cover 3 is used to cover the connecting part 1 and the sealing part 2 to seal the inner cavity of the container.

[0042] Reference Figures 6-8 In the third state, the cover 3 is connected to the connecting part 1, the communication port 211 of the sealing part 2 is located in the inner cavity of the connecting part 1, the elastic part 22 is in a compressed state, the container is in a sealed state, the product inside the container is sealed and preserved, improving the product's preservation time and freshness, and also facilitating handling or transportation.

[0043] Reference Figure 1 In some optional embodiments, the elastic part 22 is integrally formed with the main body 21, and the elastic part 22 is spiral-shaped. This application does not limit the material of the elastic part 22 and the main body 21; the material of the elastic part 22 and the main body 21 can be plastic or other materials. One end of the elastic part 22 is integrally formed with the main body 21. Compared to using a spring, the elastic part 22 in this application can reduce production costs and facilitate installation. The other end of the elastic part 22 abuts against the connecting part 1, and the elastic part 22 is spiral-shaped to facilitate the contraction or return of the elastic part 22.

[0044] In some optional embodiments, a clearance opening 23 is provided at the connection between the main body 21 and the elastic part 22. The clearance opening 23 is semi-circular, and its provision allows the elastic part 22 to make way during compression, thus avoiding affecting the contraction of the elastic part 22.

[0045] In some optional embodiments, at least two elastic portions 22 are provided and are spaced apart circumferentially along the main body 21. The number of elastic portions 22 can be two, three, or other numbers, and this application does not impose any limitation. The provision of at least two elastic portions 22 can improve the compression and rebound effect of the elastic portions 22.

[0046] Reference Figures 1-8In some optional embodiments, a first engaging portion 212 is provided at one end of the main body 21 opposite to the connecting portion 1, and a second engaging portion 31 protrudes from the inside of the cover 3. The first engaging portion 212 and the second engaging portion 31 are used for engaging. The first engaging portion 212 protrudes from one end of the main body 21 opposite to the connecting portion 1 and is arranged in a ring shape. The second engaging portion 31 protrudes from the inside of the cover 3 and is also arranged in a ring shape. When the cover 3 is connected to the connecting part 1, the first engaging part 212 engages with the second engaging part 31, that is, the first engaging part 212 is located above the second engaging part 31. When the cover 3 is separated from the connecting part 1, the cover 3 moves away from the connecting part 1, and the second engaging part 31 exerts an upward pulling force on the main body 21 through the first engaging part 212, thereby driving the connecting port 211 of the main body 21 to extend out of the flow port 11, further improving the sealing effect on the product in the container and improving the preservation time and freshness of the product in the container.

[0047] In some alternative embodiments, the outer diameter of the first engaging portion 212 gradually decreases in the direction toward the cover 3. This facilitates the engagement of the first engaging portion 212 with the second engaging portion 31, and also facilitates the disengagement of the first engaging portion 212 from the second engaging portion 31.

[0048] In some alternative embodiments, the inner diameter of the second engaging portion 31 gradually increases in the direction toward the connecting portion 1. This facilitates the engagement of the first engaging portion 212 with the second engaging portion 31, and also facilitates the disengagement of the first engaging portion 212 from the second engaging portion 31.

[0049] Reference Figure 6 In some optional embodiments, the cover 3 is provided with a sealing portion 32 for extending into the inner cavity of the main body 21. The sealing portion 32 is made of the same material as the cover 3, and the sealing portion 32 is integrally formed with the cover 3. The sealing portion 32 is annular and is used to extend into the inner cavity of the main body 21. The provision of the sealing portion 32 can increase the sealing effect between the cover 3 and the sealing portion 2, and also make the first engaging portion 212 and the second engaging portion 31 engage more smoothly. Furthermore, the wall thickness of the sealing portion 32 gradually decreases in the direction toward the sealing portion 2, which facilitates the sealing portion 32 extending into the inner cavity of the main body 21 and improves the sealing effect between the sealing portion 32 and the sealing portion 2.

[0050] Reference Figure 1 and Figure 6 In some optional embodiments, the inner wall of the cover 3 is provided with a first thread 33, and the outer periphery of the connecting part 1 is provided with a second thread 12. The cover 3 and the connecting part 1 are connected by the first thread 33 and the second thread 12. That is, the cover 3 and the connecting part 1 are connected by threads, which facilitates the connection and separation of the cover 3 and the connecting part 1.

[0051] In some optional embodiments, the connecting portion 1 has an abutment plane 121 on the side of the second thread 12 facing the cover 3, and the elastic portion 22 abuts against the abutment plane 121. The abutment plane 121 facilitates contact between the elastic portion 22 and the connecting portion 1, thereby facilitating the extension and retraction of the elastic portion 22.

[0052] Reference Figures 1-8 This application also includes a packaging component, including a container and a discharge nozzle as described in any of the preceding claims, wherein the container is connected to the discharge nozzle at a connection 1.

[0053] The discharge nozzle includes a connecting part 1 and a sealing part 2. The connecting part 1 is provided with a flow port 11, and the periphery of the connecting part 1 is used to connect with the open end of the container. The sealing part 2 includes a main body 21 and an elastic part 22. One end of the main body 21 is used to extend into the flow port 11, and the other end of the main body 21 extends out of the flow port 11. The main body 21 is provided with an inner cavity for communicating with the outside. The periphery of the main body 21 is provided with a communication port 211 communicating with the inner cavity of the main body 21. One end of the elastic part 22 abuts against the end of the main body 21 that extends out of the flow port 11, and the other end of the elastic part 22 abuts against the connecting part 1. In the first state, the elastic part 22 is in the return state so that the communication port 211 of the sealing part 2 is located outside the flow port 11, preventing the container from communicating with the outside. In the second state, pressure is applied to the sealing part 2, so that the elastic part 22 is in the compressed state, so that the communication port 211 of the sealing part 2 is located in the flow port 11 and communicates with the flow port 11, and the inner cavity of the container communicates with the outside.

[0054] This application, through the provision of a connecting part 1 and a sealing part 2, connects the connecting part 1 to the container, and the sealing part 2 allows the product inside the container to communicate with the outside world only when it needs to be filled or removed. Otherwise, the container remains sealed, thereby reducing the chance of the product inside the container coming into contact with the outside air and improving the product's shelf life and freshness.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A discharge nozzle, characterized in that, include: The connecting part (1) is provided with a flow port (11), and the periphery of the connecting part (1) is used to connect with the open end of the container; The sealing part (2) includes a main body (21) and an elastic part (22). One end of the main body (21) is used to extend into the flow port (11), and the other end of the main body (21) extends out of the flow port (11). The main body (21) is provided with an inner cavity for communicating with the outside. A communication port (211) communicating with the inner cavity of the main body (21) is provided on the periphery of the main body (21). One end of the elastic part (22) abuts against the end of the main body (21) that extends out of the flow port (11), and the other end of the elastic part (22) abuts against the connecting part (1). In the first state, the elastic part (22) is in the return state so that the communication port (211) of the sealing part (2) is located outside the flow port (11), thus preventing the inner cavity of the container from communicating with the outside. In the second state, pressure is applied to the sealing part (2) so that the elastic part (22) is in a compressed state, so that the communication port (211) of the sealing part (2) is located in the flow port (11) and communicates with the flow port (11), and the inner cavity of the container is connected to the outside.

2. The discharge nozzle according to claim 1, characterized in that, It also includes a cover (3), which has an inner cavity for covering the sealing part (2), and the cover (3) is detachably connected to the connecting part (1); in the third state, the cover (3) is connected to the connecting part (1), and the container is in a sealed state.

3. The discharge nozzle according to claim 1, characterized in that, The elastic part (22) is integrally formed with the main body part (21), and the elastic part (22) is spiral in shape.

4. The discharge nozzle according to claim 1 or 3, characterized in that, A clearance opening (23) is provided at the connection between the main body (21) and the elastic part (22).

5. The discharge nozzle according to claim 2, characterized in that, The main body (21) is provided with a first engaging part (212) at one end away from the connecting part (1), and a second engaging part (31) protrudes from the inside of the cover (3). The first engaging part (212) and the second engaging part (31) are used for engaging.

6. The discharge nozzle according to claim 5, characterized in that, The outer diameter of the first engaging portion (212) gradually decreases in the direction toward the cover (3), and / or the inner diameter of the second engaging portion (31) gradually increases in the direction toward the connecting portion (1).

7. The discharge nozzle according to claim 2, characterized in that, The cover (3) is provided with a sealing part (32) for extending into the inner cavity of the main body (21), and the wall thickness of the sealing part (32) gradually decreases in the direction toward the main body (21).

8. The discharge nozzle according to claim 2, characterized in that, The inner wall of the cover (3) is provided with a first thread (33), and the outer periphery of the connecting part (1) is provided with a second thread (12). The cover (3) and the connecting part (1) are connected by the first thread (33) and the second thread (12).

9. The discharge nozzle according to claim 8, characterized in that, The connecting part (1) is provided with an abutting plane (121) on the side of the second thread (12) facing the cover (3), and the elastic part (22) abuts against the abutting plane (121).

10. A packaging component, characterized in that, It includes a container and a discharge nozzle as described in any one of claims 1-9, wherein the container is connected to the discharge nozzle via a connection portion (1).