Suction nozzle type fluid guiding device

Abstract

The utility model discloses a suction nozzle type fluid guiding device which comprises an upper end suction pipe, a middle spilling prevention rubber sheet, a lower end guide pipe and a buckle structure, and a bag body is connected and communicated with a suction nozzle area. Wherein the middle spilling prevention rubber sheet is arranged at the joint of the upper end suction pipe and the lower end guide pipe and used for preventing liquid from automatically flowing. The buckle structures are arranged inside the straw and outside the guide pipe respectively and can be tightly attached structurally, so that the straw and the guide pipe are stably connected. According to the anti-spilling suction nozzle, the anti-spilling effect is achieved, meanwhile, the suction nozzle structure and the production process of matched products are simplified, and interference of air drinking water on flight operation is reduced.

Description

Technical Field

[0001] This utility model relates to a backflow prevention and spill prevention suction nozzle device, belonging to the field of packaging materials, and is especially suitable for packaging bags of liquids or other materials that need to be opened multiple times after the packaging is opened and cannot be used up at once. Background Technology

[0002] Sippy nozzles are typically designed as small, tubular tools, primarily used to help consumers drink liquid beverages more conveniently and hygienically. They are commonly found at the seals of beverage products such as cups, cans, and soft-pack beverage bags. Military pilots, on long-haul flights, require drinking devices or equipment adapted to specific application environments, usually choosing straws or spouts. Especially in combat aviation environments, there are high platform adaptability requirements for beverage packaging and export sections; aircraft-borne drinking devices or equipment must have spill-proof features. Currently, in food packaging supplied to Air Force pilots for long-haul flights, drinking water bags or cans typically use straws and / or clip structures. However, in actual combat applications, Air Force pilots have generally reported problems such as straws easily detaching and insufficient ease of clip operation during drinking water intake during flight missions.

[0003] Taking in-flight fruit-flavored beverage packaging cans as an example, the spill-proof nozzle at the can opening typically consists of five components. After the fruit-flavored beverage is filled, the nozzle is screwed onto the container body along the bottle neck thread. With the increasingly frequent use of in-flight drinking devices and equipment, higher demands are placed on the reliability and convenience of this type of fruit-flavored beverage bag / can packaging. Therefore, there is an urgent need for a spill-proof nozzle that is easy to operate, reliable in performance, and simple in structure, meeting the convenience and reliability requirements of the operational environment while simplifying the nozzle structure and improving product filling efficiency and ease of drinking. Summary of the Invention

[0004] In view of the above-mentioned needs of the prior art, this utility model designs a suction nozzle fluid guiding device based on existing packaging technology. This device not only has the function of effectively preventing spillage, but also has the advantages of simple structure and supporting product production process.

[0005] To achieve the above objectives, this utility model provides a snap-on anti-spillage nozzle, comprising: an upper suction tube, a lower guide tube, and a middle anti-spillage rubber sheet. The upper suction tube includes: two snap-on structures and a blocking ring. The lower guide tube includes: the two snap-on structures, the blocking ring, and a protruding tube body. The middle anti-spillage rubber sheet includes: a sleeve and a barrier plate. Each of the two snap-on structures includes a first inclined surface, an arc-shaped convex-concave surface, and a second inclined surface, with the arc-shaped convex-concave surface located between the first and second inclined surfaces. The blocking ring is fitted onto the outer periphery of the snap-on structure; the blocking ring is located behind the second inclined surface, forming a structure of first inclined surface - arc-shaped convex-concave surface - second inclined surface - blocking ring; the blocking ring includes an inner blocking ring and an outer blocking ring.

[0006] Preferably, the barrier is fixed at the connection between the upper suction tube and the lower conduit to prevent spontaneous liquid flow. The barrier includes a Y-shaped cut and a rigid reinforcing sheet.

[0007] Furthermore, the intermediate anti-spill rubber sheet is seamlessly fitted onto the outside of the protruding tube of the lower end guide tube through the sleeve and inserted into the inside of the upper end suction tube; the outer diameter of the sleeve is consistent with the inner diameter of the protruding tube and the inner diameter of the upper end suction tube, so that the three can be tightly and seamlessly connected together.

[0008] The first inclined surface is integrally formed with one end of the arc-shaped convex-concave surface to form a convex protrusion, and the second inclined surface is integrally formed with the other end of the arc-shaped convex-concave surface to form a concave shape; the arc-shaped convex-concave surface is located between the first inclined surface and the second inclined surface, and its curvature is not less than twice the angle between the first inclined surface or the second inclined surface and the plane in which it is located.

[0009] The two snap-fit ​​structures are located on the inner wall of the upper straw and one end of the outer periphery of the protruding tube, respectively; the first and second inclined surfaces of the snap-fit ​​structures have the same angle with the axial direction of the tube body, and the lengths of the first and second inclined surfaces are the same.

[0010] During the engagement of the upper straw and the lower conduit, the first inclined surfaces of the two snap-fit ​​structures contact each other and slide into the arc-shaped convex and concave surfaces, so that the openings of the upper straw and the lower conduit respectively abut against each other's blocking rings, preventing the lower conduit from continuing to insert into the upper straw; the first inclined surfaces of both sides contact each other's second inclined surfaces, and the arc-shaped convex and concave surfaces of both sides engage with each other, preventing the lower conduit from slipping out of the upper straw. The two snap-fit ​​structures are adapted and combined through an opposing snap-fit ​​method.

[0011] The buckle structure includes two identical buckle structures distributed in opposite directions, and the two buckle structures are fastened inside the protruding tube and the upper suction tube in a reverse arrangement; the buckle structure is connected between the upper suction tube and the lower guide tube.

[0012] When the protruding tube is inserted into the upper straw, the first inclined surface of one of the snap-fit ​​structures comes into contact with the first inclined surface of the other snap-fit ​​structure, and through the deformation of the other first inclined surface, the first inclined surface of the protruding tube smoothly slides into the arc-shaped convex and concave surface of the other snap-fit ​​structure.

[0013] Furthermore, the protruding tube extends into the upper straw, causing the first inclined surface of one of the snap-fit ​​structures to contact the second inclined surface of the other snap-fit ​​structure. At the same time, the top of the protruding tube and the upper straw abut against the inner blocking ring, thereby ensuring that the first inclined surface of one snap-fit ​​structure and the second inclined surface of the other snap-fit ​​structure are tightly fitted together, and the arc surfaces of the two arc-shaped convex and concave surfaces are also tightly fitted together, thus ensuring a stable connection between the upper straw and the lower conduit.

[0014] Preferably, the intermediate spill-proof rubber sheet comprises: a sleeve, a barrier sheet, a Y-shaped incision, and a rigid reinforcing sheet; the Y-shaped incision is designed to simulate the unidirectional Y-shaped structure of the tricuspid valve of the heart; or it is designed as three Lurcose triangular elastic sheets, which are spliced ​​together to form the Y-shaped incision. Optionally,

[0015] Optionally, the nozzle area is independent of the bag body and is designed to be detachable.

[0016] The beneficial effects of this utility model: This utility model provides a spout-type fluid guiding device suitable for beverage soft packaging bags or cans, especially for beverage liquid packaging soft bag / can products in aerospace and other space environments. The packaging bag / can is equipped with a lower conduit to ensure smooth liquid filling. After filling, the middle anti-spill rubber sheet and the upper straw are connected to the lower conduit. This structural design prevents the liquid from spontaneously flowing out of the packaging bag / can due to the restriction of the anti-spill rubber sheet. During drinking, the anti-spill rubber sheet deforms, creating gaps that allow the liquid to flow out smoothly. The snap-on anti-spill spout design simplifies the product structure and operation process, and the anti-spill design reduces potential safety hazards during use. Attached Figure Description

[0017] The following figures are included as part of this invention for understanding the invention and for explaining its structure and design principles.

[0018] Figure 1An embodiment of the overall structure of a suction nozzle fluid guiding device according to the present invention is shown;

[0019] Figure 2 An embodiment of a nozzle-type fluid guiding device according to the present invention, disassembled into its components, is shown.

[0020] Figure 3 A cross-section of the snap-fit ​​structure and a blocking ring of a suction nozzle fluid guiding device according to the present invention is shown;

[0021] Figure 4 An embodiment of the snap-fit ​​structure and blocking ring in the upper straw of the device according to the present invention is shown;

[0022] Figure 5 An embodiment of the snap-fit ​​structure and blocking ring in the lower end conduit of the device according to the present invention is shown;

[0023] Figure 6-1a and Figure 6-1b An embodiment of the intermediate anti-spill rubber sheet according to the present invention is shown;

[0024] Figure 6-2a and Figure 6-2b A bottom view is shown of one embodiment of the intermediate anti-spill rubber sheet of the device according to the present invention;

[0025] Figure 6-3a and Figure 6-3b Another embodiment of the cross-shaped cut of the intermediate anti-spill rubber sheet of the device according to the present invention is shown;

[0026] Figure 6-4a and Figure 6-4b Another embodiment of the cross-shaped cut of the intermediate anti-spill rubber sheet in the device according to the present invention is shown;

[0027] Figure 7a and Figure 7b An example of a cross-sectional structure of a nozzle-type fluid guiding device according to the present invention is shown.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Upper straw; 2. Lower tube; 3. Middle anti-spill rubber sheet; 4. Buckle; 5. Blocking ring; 501. Inner blocking ring; 502. Outer blocking ring; 6. Protruding tube body; 8. First bevel; 9. Arc-shaped groove; 10. Second bevel; 11. Sleeve; 12. Barrier plate; 13. Y-shaped cut. Detailed Implementation

[0030] In the accompanying drawings, the same or similar reference numerals are used to denote the same or similar components or parts having the same or similar functions. In the specific embodiments described below, exemplary embodiments of the present invention will be described and illustrated in more detail with reference to the accompanying drawings.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] This utility model provides a suction nozzle type fluid guiding device, such as Figure 1 As shown in Figure 7, the suction nozzle fluid guiding device of this utility model includes: an upper suction tube 1, a lower guide tube 2, and a middle anti-spill rubber sheet 3.

[0033] The upper straw 1 includes: a snap-fit ​​structure 4 and a blocking ring 5; the lower guide tube 2 includes: a snap-fit ​​structure 4, a blocking ring 5, and a protruding tube body 6; the middle spill-proof rubber sheet 3 includes: a sleeve 11 and a barrier plate 12. The snap-fit ​​structure 4 includes: a first inclined surface 8, an arc-shaped convex and concave surface 9, and a second inclined surface 10. The barrier plate 12 includes: a Y-shaped cut 13 and a rigid reinforcing plate (not shown in the figure). The blocking ring 5 includes an inner blocking ring 501 and an outer blocking ring 502.

[0034] In a preferred embodiment of this invention, the intermediate anti-spill rubber sheet 3 is seamlessly fitted onto the outside of the protruding tube 6 of the lower conduit 2 via a sleeve 11 and inserted into the inside of the upper suction tube 1. The outer diameter of the sleeve 11 matches the inner diameter of the protruding tube 6 and the inner diameter of the upper suction tube 1, allowing the three to be tightly and seamlessly connected together. The barrier 12 of the intermediate anti-spill rubber sheet 3 is fixed at the connection between the upper suction tube 1 and the lower conduit 2 to prevent spontaneous liquid flow.

[0035] Figure 3 This is a cross-sectional view of a specific embodiment of the snap-fit ​​structure and blocking ring of a suction nozzle-type fluid guiding device according to this utility model. (Combined with...) Figure 3As can be seen, the snap-fit ​​structure 4 includes: a first inclined surface 8, an arc-shaped convex-concave surface 9, and a second inclined surface 10. A blocking ring 5 is fitted onto the outer periphery of the snap-fit ​​structure 4. The arc-shaped convex-concave surface 9 is located between the first inclined surface 8 and the second inclined surface 10. The first inclined surface 8 and one end of the arc-shaped convex-concave surface 9 are integrally formed to form a convex shape, and the second inclined surface 10 and the other end of the arc-shaped convex-concave surface 9 are integrally formed to form a concave shape. In a preferred embodiment, the snap-fit ​​structure 4 is located on the inner wall of the upper straw 1 and one end protruding from the outer periphery of the tube body 6. The first inclined surface 8 and the second inclined surface 10 of the snap-fit ​​structure 4 have the same angle with the axial direction of the tube body, and the lengths of the first inclined surface 8 and the second inclined surface 10 are the same. The arc-shaped convex-concave surface 9 is located between the first inclined surface 8 and the second inclined surface 10, and its curvature is not less than twice the angle between the first inclined surface 8 or the second inclined surface 10 and the plane in which it is located. The blocking ring 5 is located behind the second inclined surface 10, forming a structure of first inclined surface 8 - arc-shaped convex and concave surface 9 - second inclined surface 10 - blocking ring 5. During the engagement of the upper straw 1 and the lower tube 2, the first inclined surfaces 8 of the two locking structures 4 above them contact each other and slide into the arc-shaped convex and concave surface 9. At this time, the openings of the upper straw 1 and the lower tube 2 respectively abut against the blocking ring 5 of the other, preventing the lower tube 2 from continuing to insert into the upper straw 1. The first inclined surfaces 8 of both sides contact the second inclined surface 10 of the other side, and the arc-shaped convex and concave surfaces 9 of both sides engage with each other, preventing the lower tube 2 from slipping out of the upper straw 1. The two locking structures 4 are adapted and combined through an opposing engagement method.

[0036] Figure 4 An embodiment of the snap-fit ​​structure and blocking ring in the upper straw of the device according to the present invention is shown; Figure 5 An embodiment of the snap-fit ​​structure and blocking ring in the lower end conduit of the device according to the present invention is shown; Figure 7a and Figure 7b An example of a cross-sectional structure of a suction nozzle-type fluid guiding device according to the present invention is shown. Figures 2 to 5 and Figure 7a , Figure 7bIt can be seen that the snap-fit ​​structure 4 is arranged in reverse order inside the protruding tube 6 and the upper straw 1. In a preferred embodiment, the snap-fit ​​structure 4 connecting the upper straw 1 and the lower guide tube 2 includes two identical snap-fit ​​structures 4 distributed in opposite directions, which can also be described as a first snap-fit ​​structure 4 and a second snap-fit ​​structure 4. When the protruding tube 6 is inserted into the upper straw 1, the first inclined surface 8 of the second snap-fit ​​structure 4 comes into contact with the first inclined surface 8 of the first snap-fit ​​structure 4. This structure allows the first inclined surface 8 to slide smoothly into the arc-shaped convex and concave surface 9 of the other snap-fit ​​structure 4 after the two inclined surfaces 8 are deformed. As the protruding tube 6 continues to penetrate deeper into the upper straw 1, the first inclined surface 8 of the first snap-fit ​​structure 4 contacts the second inclined surface 10 of the second snap-fit ​​structure 4. At the same time, the top of the protruding tube 6 and the upper straw 1 abut against the inner blocking ring 501, and finally the first inclined surface 8 of the snap-fit ​​structure 4 and the second inclined surface 10 of the snap-fit ​​structure 4 are tightly fitted together. The arc surfaces of the two arc-shaped convex and concave surfaces 9 are also tightly fitted together, so that the upper straw 1 and the lower guide tube 2 are stably connected.

[0037] Figure 6-1a , Figure 6-1b and Figure 6-2a , Figure 6-2b An embodiment of the intermediate anti-spill rubber sheet according to the device of this utility model is shown. Figure 7a and Figure 7b An example of a cross-sectional structure of a suction nozzle-type fluid guiding device according to the present invention is shown. Figure 6-1a , Figure 6-1b and Figure 6-2a , Figure 6-2b In this embodiment, the intermediate anti-spill rubber sheet 3 includes: a sleeve 11, a barrier sheet 12, a Y-shaped cutout 13, and a rigid reinforcing sheet (not shown in the figure). Combined with... Figure 6-1a , Figure 6-1b and Figure 6-2a , Figure 6-2b As can be seen, when the protruding tube 6 is inserted into the upper suction tube 1, the intermediate anti-spill rubber sheet 3 is fixed inside the upper suction tube 1. In a preferred embodiment, the Y-shaped incision 13 is designed to simulate the unidirectional Y-shaped structure of a heart valve. The rigid reinforcing sheet, approximately 1 mm thick, is located at the outer periphery of the Y-shaped incision 13 to reinforce it and prevent it from bending in the opposite direction. This structural design, which completely simulates the tricuspid valve, ensures that the Y-shaped incision 13 on the intermediate anti-spill rubber sheet 3 always bends in the same direction, providing excellent backflow prevention. Optionally, in environments where backflow prevention is not critical, the Y-shaped incision 13 can be replaced by a cross-shaped incision. Figure 6-3a , 6-3b and Figure 6-4a , 6-4b An embodiment of the cross-cut of the intermediate anti-spill rubber sheet according to the present invention is shown.

[0038] In a preferred embodiment, the Y-shaped cut 13 of the barrier 12 is composed of three Lurcotes triangular elastic sheets. These three elastic sheets are joined to form the Y-shaped cut 13. Two of the arcuate sides of the Y-shaped cut have an arc angle of less than 120°, while the other arcuate side has an arc angle of 120°. The height of the Lurcotes triangle with this arcuate side as its base is greater than the radius of the barrier 12. This ensures that when the edges of the Y-shaped cut 13 are fitted together, the Lurcotes triangular elastic sheets are recessed inwards towards the sleeve 11. The rigid reinforcing sheet is V-shaped and has a certain degree of rigidity. It is assembled around the edge of the Y-shaped cut 13, ensuring a tight fit. The barrier 12 is recessed inwards towards the sleeve 11. When liquid comes into contact with the protruding surface of the barrier 12 via the lower conduit 2, the rigid reinforcing sheets adhere to each other, forming a stable triangular structure that prevents liquid from flowing through. When the liquid is squeezed or when a strong negative pressure is generated at the end of the nozzle 1, the liquid comes into contact with the concave surface of the barrier 12 through the upper suction tube 1. The barrier 12 undergoes a relatively obvious deformation, and a gap appears at the edge of the Y-shaped cut 13, allowing the liquid to flow smoothly through the barrier 12.

[0039] The barrier sheet 12 has a certain degree of hardness, preventing liquid from flowing through it spontaneously when it comes into contact with the liquid. When drinking beverages, the liquid inside the bag is squeezed, or a strong negative pressure is generated at the nozzle end of the upper straw 1, causing the barrier sheet 12 to deform significantly, creating gaps that allow the liquid to flow smoothly through it. In a preferred embodiment, the nozzle of this invention is independent of the bag body and is designed to be detachable.

[0040] In one specific embodiment, when filling a beverage, the liquid is poured into the packaging bag or can through the upper straw 1 connected to the packaging bag or can. After filling, the opening of the upper straw 1 is sealed with aluminum foil. When using the product, the user needs to tear off the aluminum foil at the opening of the upper straw 1, insert the lower guide tube 2 (with the middle anti-spill rubber sheet 3) directly into the upper straw 1, and ensure that the buckle is securely locked before drinking.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Those skilled in the art should understand that modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A suction nozzle type fluid guiding device, characterized in that, include: The device comprises an upper straw, a lower guide tube, and a middle anti-spill rubber sheet. The upper straw and the lower guide tube are connected together by two snap-fit ​​structures, with a blocking ring fitted around the outer periphery of each snap-fit ​​structure. The lower guide tube also includes a protruding tube body. The blocking ring includes an inner blocking ring and an outer blocking ring.

2. The apparatus according to claim 1, characterized in that, The intermediate anti-spill rubber sheet includes: a sleeve and a barrier sheet; the barrier sheet is fixed at the connection between the upper suction tube and the lower conduit to prevent spontaneous liquid flow, and the barrier sheet includes: a Y-shaped cut and a rigid reinforcing sheet.

3. The apparatus according to claim 2, characterized in that, The intermediate anti-spill rubber sheet is seamlessly fitted onto the outside of the protruding tube of the lower end guide tube through the sleeve and inserted into the inside of the upper end suction tube; the outer diameter of the sleeve is consistent with the inner diameter of the protruding tube and the inner diameter of the upper end suction tube, so that the three can be tightly and seamlessly connected together.

4. The apparatus according to claim 1, characterized in that, Both of the snap-fit ​​structures include a first inclined surface, an arc-shaped convex-concave surface, and a second inclined surface, with the arc-shaped convex-concave surface located between the first inclined surface and the second inclined surface. The blocking ring is fitted onto the outer periphery of the snap-fit ​​structure. The blocking ring is located behind the second inclined surface, forming a structure of first inclined surface - arc-shaped convex-concave surface - second inclined surface - blocking ring in sequence. One end of the first inclined surface and the arc-shaped convex-concave surface are integrally formed to form a convex protrusion, and the other end of the second inclined surface and the arc-shaped convex-concave surface are integrally formed to form a concave shape. The arc-shaped convex-concave surface is located between the first inclined surface and the second inclined surface, and its curvature is not less than twice the angle between the first inclined surface or the second inclined surface and the plane in which it is located.

5. The apparatus according to claim 4, characterized in that, The two snap-fit ​​structures are located on the inner wall of the upper straw and one end of the outer periphery of the protruding tube, respectively; the first and second inclined surfaces of the snap-fit ​​structures have the same angle with the axial direction of the tube body, and the lengths of the first and second inclined surfaces are the same.

6. The apparatus according to claim 5, characterized in that, During the engagement of the upper straw and the lower conduit, the first inclined surfaces of the two snap-fit ​​structures contact each other and slide into the arc-shaped convex and concave surfaces, so that the openings of the upper straw and the lower conduit respectively abut against each other's blocking rings, preventing the lower conduit from continuing to insert into the upper straw; the first inclined surfaces of both sides contact each other's second inclined surfaces, and the arc-shaped convex and concave surfaces of both sides engage with each other, preventing the lower conduit from slipping out of the upper straw. The two snap-fit ​​structures are adapted and combined through an opposing snap-fit ​​method.

7. The apparatus according to claim 1, characterized in that, The buckle structure includes two identical buckle structures distributed in opposite directions, and the two buckle structures are fastened inside the protruding tube and the upper suction tube in a reverse arrangement; the buckle structure is connected between the upper suction tube and the lower guide tube.

8. The apparatus according to claim 4, characterized in that, When the protruding tube is inserted into the upper straw, the first inclined surface of one of the snap-fit ​​structures comes into contact with the first inclined surface of the other snap-fit ​​structure, and through the deformation of the other first inclined surface, the first inclined surface of the protruding tube smoothly slides into the arc-shaped convex and concave surface of the other snap-fit ​​structure.

9. The apparatus according to claim 8, characterized in that, The protruding tube extends into the upper straw, causing the first inclined surface of one of the snap-fit ​​structures to contact the second inclined surface of the other snap-fit ​​structure. At the same time, the top of the protruding tube and the upper straw abut against the inner blocking ring, thereby making the first inclined surface of one snap-fit ​​structure and the second inclined surface of the other snap-fit ​​structure fit tightly together. The arc surfaces of the two arc-shaped convex and concave surfaces also fit tightly together, thus ensuring a stable connection between the upper straw and the lower conduit.

10. The apparatus according to claim 1, characterized in that, The intermediate anti-spillage rubber sheet includes: a sleeve, a barrier sheet, a Y-shaped incision, and a rigid reinforcing sheet; the Y-shaped incision is designed to simulate the unidirectional Y-shaped structure of the tricuspid valve of the heart; or it is designed as three Luroxnesian triangular elastic sheets, which are spliced ​​together to form the Y-shaped incision.

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