A precision drop nozzle

Abstract

The application relates to the technical field of fluid conveying and sealing, in particular to a precise drop suction nozzle which comprises a body, a flow liquid channel arranged in the body in an axial direction, a liquid inlet at the top of the flow liquid channel, a liquid outlet at the bottom of the flow liquid channel, a plugging head slidingly connected in the liquid outlet, an elastic member in the flow liquid channel for providing elastic force to the plugging head to seal the liquid outlet, and the elastic member being separated from the liquid outlet under the action of external force and gradually increasing the liquid outlet gap between the elastic member and the liquid outlet. The application can realize precise drop control, is convenient to connect with a bag body, can effectively seal, and has the technical effect of anti-skid during operation.

Description

Technical Field

[0001] This application relates to the field of fluid transport and sealing technology, and in particular to a precision drip nozzle. Background Technology

[0002] The development of nozzle technology in the liquid packaging field has been significant. As the liquid packaging industry continues to advance, nozzles, as a key component of composite packaging bags, have also undergone continuous technological evolution. The emergence of nozzles has made liquid packaging more convenient and is widely used in the packaging of various liquid products, such as beverages and concentrated liquids.

[0003] In existing technologies, common suction nozzles are mainly single-channel designs and lack effective constant flow control methods. They rely primarily on simple sealing and opening mechanisms to meet basic dispensing needs. This type of nozzle design is simplistic, possessing only a single function, primarily focusing on achieving basic sealing and opening to facilitate user dispensing of liquid from the bag.

[0004] However, the single-channel design makes the nozzle unsuitable for precise fluid dripping, and it lacks constant flow control capabilities, making it impossible to achieve stepped dripping control and meet the diverse needs of more customers. Furthermore, for concentrated liquid packaging with long service lives, the existing opening method easily allows a large amount of air to enter the bag, affecting the quality of the concentrated liquid. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this application provides a precision drip nozzle. By having a sealing head with an elastic element cooperate with the liquid outlet, the sealing head disengages from the liquid outlet when an external force is applied, and the liquid outlet gap gradually increases as it disengages. This enables precise drip control, allowing the liquid output to be adjusted as needed, and ensuring that the drip process is accurate and controllable.

[0006] This application is achieved through the following technical solution: A precision dripping nozzle includes a body with an axially arranged liquid flow channel. The top of the liquid flow channel has an inlet communicating with it, and the bottom of the liquid flow channel has an outlet communicating with it. A sealing head is slidably connected to the outlet. An elastic element is provided in the liquid flow channel, providing elastic force to the sealing head to abut against the outlet and seal it. Under external force, the elastic element can disengage from the outlet, forming a liquid outlet gap. This gap gradually increases as the elastic element disengages from the outlet.

[0007] By adopting the above technical solution, the liquid flow channel of the precision drip nozzle, in conjunction with the inlet and outlet, enables liquid flow. The elastic element provides elasticity to the sealing head, allowing it to abut against the outlet and effectively seal it, preventing leakage and ensuring the nozzle's sealing performance when not in use. When subjected to external force, the elastic element disengages from the outlet, creating an outlet gap that gradually increases in size, enabling precise dripping and facilitating accurate flow control. This structural design ensures both a tight seal and precise dripping during liquid delivery, meeting the needs of liquid delivery in various scenarios.

[0008] Optionally, the liquid inlet end is provided with a locking part for defining the position of the elastic element.

[0009] By adopting the above technical solution, a locking part is provided at the inlet end to limit the position of the elastic element, effectively preventing displacement and shaking of the elastic element within the liquid flow channel. This ensures that the elastic element can stably provide elastic force to the sealing head, allowing the sealing head to accurately abut against the outlet and achieve a good sealing effect. Simultaneously, when external force is applied to the elastic element, its positional stability ensures a smooth process of disengagement from the outlet, allowing the outlet gap to gradually increase as expected, thus guaranteeing the stability and accuracy of the liquid dripping.

[0010] Optionally, the snap-fit ​​part has an annular structure, and the inner wall of the snap-fit ​​part is evenly distributed with several protrusions along the circumference.

[0011] By adopting the above technical solution, the ring-shaped structure of the snap-fit ​​part can better limit the position of the elastic element, making its installation more stable. Several protrusions evenly distributed circumferentially on the inner wall further enhance the limiting effect on the elastic element, preventing it from shaking or shifting within the liquid flow channel. This ensures the elastic element functions properly, providing elastic force to the sealing head, allowing the sealing head to accurately contact or disengage from the outlet, achieving sealing and opening of the outlet, and ensuring the normal use of the precision drip nozzle and a stable dripping of the liquid.

[0012] Optionally, the protrusion has an oblique guide surface on the side near the liquid inlet.

[0013] By adopting the above technical solution, an oblique guide surface is provided on the side of the protrusion near the liquid inlet, which provides a good guiding effect for the installation of the elastic component. When the elastic component is installed, the oblique guide surface can guide the elastic component smoothly to the predetermined position, reducing the installation difficulty and improving the installation efficiency. At the same time, this guiding design can also reduce the problem of jamming or displacement of the elastic component during installation, ensuring that the elastic component is accurately engaged in the engagement part, thereby ensuring the stability and functionality of the overall structure of the precision drip nozzle.

[0014] Optionally, the sealing head is provided with a guide ring adapted to the fluid flow channel.

[0015] By adopting the above technical solution, a guide ring adapted to the flow channel is set on the sealing head, making the sliding of the sealing head within the flow channel more stable and smooth. The guide ring provides precise guidance for the sealing head, ensuring it moves along the correct path in the flow channel, avoiding deviation or shaking, and guaranteeing accurate sealing and opening of the sealing head and the outlet. This improves the overall performance and stability of the precision drip nozzle, ensuring precise control of liquid dripping.

[0016] Optionally, a plurality of guide blocks are evenly distributed along the circumferential direction on the outer wall of the guide ring.

[0017] By adopting the above technical solution, several guide blocks are evenly distributed circumferentially on the outer wall of the guide ring, which provides a more stable guiding effect for the sliding of the sealing head in the liquid flow channel, ensuring a more accurate sliding trajectory of the sealing head and avoiding deviation or jamming. At the same time, the evenly distributed guide blocks make the force on the sealing head more uniform during the sliding process, further improving its smoothness and ensuring the reliable execution of the elastic element driving the sealing head to abut against the liquid outlet for sealing and to disengage from the liquid outlet to form a liquid outlet gap, thereby improving the overall performance of the precision drip nozzle.

[0018] Optionally, the sealing head and the contact edge of the liquid outlet have a conical structure.

[0019] By adopting the above technical solution, the contact edge between the sealing head and the outlet is designed as a conical structure, which improves the sealing effect between the sealing head and the outlet, reducing the possibility of liquid leakage. Simultaneously, the conical structure allows for smoother liquid flow when the sealing head detaches from the outlet and prevents liquid residue from forming at the outlet. Furthermore, this structure makes the sealing head more stable during sliding, ensuring the normal use of the precision drip nozzle and the accuracy of the drip.

[0020] Optionally, the liquid inlet end of the outer wall of the main body is provided with a connecting part, and the liquid outlet end is provided with a threaded part; the connecting part is used for plastic welding with the bag body; a sealing cap is threadedly connected to the threaded part.

[0021] By adopting the above technical solution, a connecting part is provided at the liquid inlet end of the outer wall of the nozzle for plastic welding to the bag body, which can achieve a firm connection between the nozzle and the bag body, with good sealing performance to prevent liquid leakage. A threaded part is provided at the liquid outlet end and a sealing cap is threadedly connected, which makes it easy to seal the nozzle when not in use to prevent liquid from flowing out or becoming contaminated. At the same time, the sealing cap can be easily opened when needed, making operation simple and convenient, and ensuring the functional integrity and reliability of the precision drip nozzle under different usage conditions.

[0022] Optionally, the connecting portion has a rhomboid structure.

[0023] By adopting the above technical solution, the connecting part is designed with a diamond-shaped structure. Compared with the conventional shape, this increases the contact area with the bag body, making the connection more secure when welded to the bag body and effectively preventing the nozzle from detaching from the bag body. At the same time, the unique shape of the diamond structure facilitates positioning and operation during installation, improving production efficiency. Moreover, its more unique and novel appearance helps to enhance product recognition and market competitiveness.

[0024] Optionally, the outer wall of the body is provided with an anti-slip part in the middle.

[0025] By adopting the above technical solution, an anti-slip part is provided in the middle of the outer wall of the main body, which provides users with a better grip when operating the precision drip nozzle. When the user holds the nozzle to perform operations such as connecting it to the bag body or twisting the sealing cap, the anti-slip part can effectively increase the friction between the hand and the nozzle, preventing the nozzle from slipping out of the hand and avoiding liquid leakage or nozzle damage caused by slipping. This makes the operation process safer and more stable, and improves the overall ease of use and reliability.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. This application uses a liquid flow channel in conjunction with a sealing head with an elastic element. When an external force is applied, the sealing head detaches from the liquid outlet, and the liquid outlet gap gradually increases, thereby achieving precise drip control and allowing the liquid output to be adjusted as needed.

[0027] 2. This application limits the position of the elastic element by the snap-fit ​​part to prevent its displacement, ensures that the elastic element provides stable elastic force, and ensures reliable sealing and liquid discharge functions.

[0028] 3. This application enhances the limiting effect on the elastic element through the annular locking part and circumferential protrusion, preventing loosening, improving structural stability, and ensuring stable dripping accuracy. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the body described in Embodiment 1; Figure 2 This is a schematic diagram of the flow channel described in Embodiment 1; Figure 3 This is a schematic diagram of the liquid outlet gap described in Example 1; Figure 4 This is a schematic diagram of the connecting part described in Embodiment 1; Figure 5 This is a schematic diagram of the liquid inlet structure described in Example 1; Figure 6 This is a schematic diagram of the sealing head described in Embodiment 1; Figure 7 This is a schematic diagram of the snap-fit ​​part described in Embodiment 1; Figure 8 This is a schematic diagram of the sealing cap described in Embodiment 1.

[0030] In the diagram: 1. Body; 11. Liquid flow channel; 111. Liquid inlet; 1111. Snap-fit ​​part; 1112. Ring structure; 1113. Protrusion; 1114. Angled guide surface; 112. Liquid outlet; 113. Sealing head; 1131. Guide ring; 1132. Guide block; 1133. Conical structure; 114. Elastic element; 115. Liquid outlet gap; 12. Connecting part; 121. Rhomboid structure; 13. Threaded part; 14. Anti-slip part; 2. Sealing cap. Detailed Implementation

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

[0032] Example 1 Reference Figures 1-3 This application discloses a precision dripping nozzle, including a body 1. The body 1 has a liquid flow channel 11 arranged axially. The top of the liquid flow channel 11 has an inlet 111 communicating with the liquid flow channel 11, and the bottom of the liquid flow channel 11 has an outlet 112 communicating with the liquid flow channel 11. A sealing head 113 is slidably connected in the outlet 112. An elastic element 114 is provided in the liquid flow channel 11. The elastic element 114 can provide elastic force to the sealing head 113 so that the elastic element 114 can abut against the outlet 112 to seal the outlet 112. Under the action of external force, the elastic element 114 can disengage from the outlet 112 and form an outlet gap 115 between it and the outlet 112. The outlet gap 115 can gradually increase as the elastic element 114 disengages from the outlet 112.

[0033] Specifically, the body 1, as the basic component of the entire precision drip nozzle, is cylindrical in shape, but can also be other shapes. The material can be plastic or other materials, such as polyethylene or polypropylene. These plastic materials have good chemical stability and corrosion resistance, and can adapt to the delivery of different liquids. Glass can also be used, as its transparency allows for easy observation of the liquid flow. The flow channel 11 is arranged along the axial direction of the body 1, and its function is to allow the liquid to flow within the body 1. The inner wall of the flow channel 11 should be smooth to reduce resistance to liquid flow. For example, the smoothness of the inner wall of the flow channel 11 can be ensured through precision injection molding or machining. The flow channel 11 has an inlet 111 at the top and an outlet 112 at the bottom. Both the inlet 111 and the outlet 112 are connected to the flow channel 11, facilitating the entry and exit of the liquid. The elastic element 114 provides elasticity to the sealing head 113, causing the sealing head 113 to abut against the outlet 112, sealing the outlet 112. The elastic element 114 can be a spring, the spring constant of which can be selected according to actual needs to ensure that appropriate elastic force is provided. Alternatively, it can be an elastic rubber column, which has good elasticity and cushioning performance. When the elastic element 114 is subjected to external force, the sealing head 113 will disengage from the liquid outlet 112, forming a liquid outlet gap 115 between them. This liquid outlet gap 115 gradually increases as the elastic element 114 disengages from the liquid outlet 112, thereby controlling the liquid dripping.

[0034] Reference Figures 2-4 The outer wall of the main body 1 has an anti-slip part 14 in the middle. The anti-slip part 14 can be a number of protrusions or grooves, or it can be a frosted surface or other shapes. The function of the anti-slip part 14 is to facilitate the operator to hold the nozzle and prevent the nozzle from slipping during operation.

[0035] Reference Figures 3-4 The outer wall of the main body 1 has a connecting part 12 at the liquid inlet 111 end and a threaded part 13 at the liquid outlet 112 end; the connecting part 12 is used for plastic welding with the bag body; the material of the connecting part 12 should match the material of the bag body to ensure a good welding effect.

[0036] Reference Figures 4-5 The connecting part 12 has a rhomboid structure 121. The design of the rhomboid structure 121 helps to increase the welding area and improve the strength of the weld.

[0037] Reference Figure 6The sealing head 113 is equipped with a guide ring 1131 adapted to the flow channel 11; the contact edge between the sealing head 113 and the outlet 112 is conical 1133; several guide blocks 1132 are evenly distributed circumferentially on the outer wall of the guide ring 1131. The sealing head 113 can be made of rubber, which has good elasticity and sealing performance, and can tightly abut against the outlet 112 to achieve a seal; or it can be made of silicone, which is non-toxic and odorless, and suitable for medical or other fields with high hygiene requirements. The shape of the sealing head 113 must be adapted to the outlet 112 to ensure a good sealing effect. The function of the guide ring 1131 is to ensure smooth sliding of the sealing head 113 in the outlet 112. The conical structure 1133 enables the sealing head 113 to better seal with the outlet 112, improving the sealing effect. When the plugging head 113 abuts against the outlet 112, the conical structure 1133 increases the contact area and reduces the possibility of liquid leakage. The guide block 1132 reduces the contact area between the guide ring 1131 and the inner wall of the flow channel 11, reducing friction and making the sliding of the plugging head 113 more flexible. The guide ring 1131 and the guide block 1132 can be made of the same material as the plugging head 113, and the plugging head 113, guide ring 1131, and guide block 1132 can be manufactured in one piece.

[0038] Reference Figure 7 The liquid inlet 111 is provided with a snap-fit ​​portion 1111 for limiting the position of the elastic member 114; the protrusion 1113 is provided with an oblique guide surface 1114 on the side near the liquid inlet 111; the snap-fit ​​portion 1111 has a ring structure 1112, and the inner wall of the snap-fit ​​portion 1111 is evenly distributed with a number of protrusions 1113 along the circumference. The snap-fit ​​portion 1111 is used to define the position of the elastic element 114; the inclined guide surface 1114 facilitates the installation of the elastic element 114. When the elastic element 114 is installed, the inclined guide surface 1114 can guide the elastic element 114 smoothly into the snap-fit ​​portion 1111; the protrusion 1113 is used to hold the elastic element 114 in place and prevent the elastic element 114 from shaking in the fluid channel 11. The material of the protrusion 1113 can be the same as that of the body 1. The protrusion 1113 and the snap-fit ​​portion 1111 can be glued to the inner wall of the body 1, or the protrusion 1113 and the snap-fit ​​portion 1111 can be glued to the inner wall of the body 1 in other ways.

[0039] Reference Figure 8 A sealing cap 2 is threaded onto the threaded portion 13. The function of the sealing cap 2 is to seal the liquid outlet 112 when the main body 1 is not in use, to prevent liquid leakage. The material of the sealing cap 2 can be the same as that of the main body 1, and the thread precision of the threaded portion 13 should be high to ensure a tight connection between the sealing cap 2 and the threaded portion 13.

[0040] The implementation principle of this embodiment is as follows: Under normal conditions, the elastic element 114 provides elasticity to the sealing head 113, causing the sealing head 113 to abut against the liquid outlet 112, achieving a seal and preventing liquid from flowing out. When dripping liquid is required, an external force is applied to deform the elastic element 114, causing the sealing head 113 to disengage from the liquid outlet 112, forming a liquid outlet gap 115, and the liquid begins to drip. As the external force increases, the liquid outlet gap 115 gradually increases, and the dripping speed also increases accordingly. By controlling the magnitude of the external force, the dripping speed and amount of liquid can be precisely controlled. The snap-fit ​​part 1111 defines the position of the elastic element 114, ensuring the stability of the elastic element 114; the guide ring 1131 and the guide block 1132 make the sliding of the sealing head 113 smoother; the connecting part 12 facilitates connection with the bag body; the threaded part 13 and the sealing cap 2 ensure the sealing performance when not in use; the anti-slip part 14 facilitates operation by the operator. Compared with existing technologies, this precision drip nozzle overcomes the problems of difficulty in precise control of manual squeezing of droppers, difficulty in controlling small flow rates with valves, the great influence of gravity and capillary phenomena on the environment, and the limited adjustment accuracy of roller regulators, thus achieving precise control of liquid dripping.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of this application.

Claims

1. A precision dripping nozzle, characterized in that: Includes a body (1), wherein the body (1) is provided with a liquid flow channel (11) arranged along the axial direction, the top of the liquid flow channel (11) is provided with an inlet (111) communicating with the liquid flow channel (11), the bottom of the liquid flow channel (11) is provided with an outlet (112) communicating with the liquid flow channel (11), and a sealing head (113) is slidably connected in the outlet (112); an elastic element (114) is provided in the liquid flow channel (11), the elastic element (114) is slidably connected in the outlet (112); 14) It can provide elastic force to the sealing head (113) so that the elastic element (114) can abut against the liquid outlet (112) and seal the liquid outlet (112); the elastic element (114) can disengage from the liquid outlet (112) under the action of external force and form a liquid outlet gap (115) with the liquid outlet (112), and the liquid outlet gap (115) can gradually increase during the process of the elastic element (114) disengaging from the liquid outlet (112).

2. The precision dripping nozzle according to claim 1, characterized in that: The liquid inlet (111) end is provided with a snap-fit ​​part (1111) for limiting the position of the elastic member (114).

3. A precision dripping nozzle according to claim 2, characterized in that: The snap-fit ​​part (1111) has an annular structure (1112), and the inner wall of the snap-fit ​​part (1111) is evenly distributed with several protrusions (1113) along the circumferential direction.

4. A precision dripping nozzle according to claim 3, characterized in that: The protrusion (1113) has an oblique guide surface (1114) on the side near the liquid inlet (111).

5. A precision dripping nozzle according to claim 1, characterized in that: The plug head (113) is provided with a guide ring (1131) that is adapted to the flow channel (11).

6. A precision dripping nozzle according to claim 5, characterized in that: The outer wall of the guide ring (1131) is evenly distributed with several guide blocks (1132) along the circumferential direction.

7. A precision dripping nozzle according to claim 5, characterized in that: The sealing head (113) and the liquid outlet (112) have a tapered structure (1133) at their contact edges.

8. A precision dripping nozzle according to claim 1, characterized in that: The outer wall of the main body (1) has a connecting part (12) at the liquid inlet (111) end and a threaded part (13) at the liquid outlet (112) end; the connecting part (12) is used for plastic welding with the bag body; a sealing cap (2) is threaded onto the threaded part (13).

9. A precision dripping nozzle according to claim 8, characterized in that: The connecting part (12) has a rhomboid structure (121).

10. A precision dripping nozzle according to claim 8, characterized in that: The outer wall of the main body (1) is provided with an anti-slip part (14).

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