An oxygen-proof quantitative dispensing device

Abstract

The utility model provides a kind of oxygen barrier quantitative subpackaging device, including cylinder, liquid inlet piston, liquid outlet head and pressing part, liquid inlet piston can be axially displaced and be arranged in cylinder, the inside of liquid inlet piston is passed through and is provided with liquid inlet channel, and the cooperation place of liquid inlet piston and cylinder inner wall is provided with sealing ring, and pressing part and liquid outlet head are arranged in the bottom of cylinder, and liquid inlet and sealing structure are provided on liquid outlet head, and pressing part drives liquid outlet head displacement, to selectively make liquid inlet and the internal cavity of cylinder communicate or disconnect. The present application is designed by cylinder-piston-liquid outlet head-pressing part, realizes oxygen barrier quantitative subpackaging under the protection of inert gas, with the effect of accurate control, safe pressure relief, reliable sealing, easy operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of liquid dispensing and packaging, and specifically relates to an oxygen-free quantitative dispensing device. Background Technology

[0002] Beverages such as wine, sake, and specialty coffee often need to be repackaged in retail and offline sharing sessions for smaller quantities to facilitate sales, transportation, or tasting and discussion. These beverages are highly sensitive to oxygen and easily oxidize and spoil, making it crucial to maintain an oxygen-free environment during the repackaging process.

[0003] In existing technologies, oxygen-free bottling typically relies on specialized filling equipment under inert gas protection. This type of equipment is mostly used in production lines at wineries or beverage plants, suitable for large-scale bottling production, but not for small-scale, flexible applications such as offline retail or on-site bottling. For retailers or individual enthusiasts, the main options currently available are as follows: Funnel filling: The wine is poured through a funnel into dispensing bags or glass bottles. While simple, this method requires the bag opening to be pre-opened, inevitably allowing air to enter. Additionally, the large diameter of the funnel increases the surface area of ​​the liquid exposed to air, raising the risk of oxidation. Furthermore, using a funnel with glass bottles or similar containers can introduce secondary contamination.

[0004] Direct-connect filling bags: The opening of the filling bag is directly connected to the wine dispenser. Inert gas is injected into the bottle, causing the wine to enter the filling bag under pressure. The bag is typically made of multi-layered composite aluminum foil, providing light-blocking and barrier properties. When the gas pressure pushes the liquid in, the bag opening is opened, completing the filling process. This method reduces intermediate container steps and significantly lowers the risk of oxidation compared to the funnel method.

[0005] However, the existing methods described above still have the following prominent problems in practical use: Difficulty in controlling the quantity: When the bottle is directly connected to the dispensing bag, it is impossible to observe the amount of liquid in the dispensing bag in real time. Weighing is inconvenient to use on site and it is difficult to achieve accurate quantity. The detection equipment is not feasible: adding a flow sensor or weighing module would significantly increase the system complexity and cost, making it unsuitable for retail applications; Insufficient ease of operation: In the field environment, connection, observation and control need to be simple and intuitive, and the existing methods are not user-friendly enough.

[0006] In summary, existing small-scale dispensing methods suffer from poor oxygen isolation (such as the funnel method) or cannot solve the quantitative problem (such as the direct docking method). Therefore, there is an urgent need for a dispensing device with a reasonable structure that can achieve quantitative control in an oxygen-isolated environment while avoiding system complexity, in order to meet the needs of on-site bottled liquid dispensing. Utility Model Content

[0007] In order to solve the above-mentioned problems in the prior art, this application provides an oxygen-free quantitative dispensing device to solve the above-mentioned technical defects.

[0008] This invention proposes an oxygen-free quantitative dispensing device, comprising: a cylinder, an inlet piston, an outlet head, and a pressing part. The inlet piston is axially displaceable within the cylinder, and an inlet channel is provided through its interior. A sealing ring is provided at the interface between the inlet piston and the inner wall of the cylinder. The pressing part and the outlet head are located at the bottom of the cylinder. The outlet head has an inlet and a sealing structure. The pressing part drives the outlet head to move, selectively connecting or disconnecting the inlet from the internal cavity of the cylinder. Through the combination of the cylinder, inlet piston, outlet head, and pressing part, quantitative liquid dispensing and dispensing are achieved in an oxygen-free environment. The inlet channel of the inlet piston, combined with the sealing ring, allows for controllable liquid injection, retention, and output processes, preventing excessive contact between the liquid and air and improving preservation.

[0009] In some specific examples, the upper port of the cylinder has a flared structure, and the flared structure near the top of the cylinder has a size larger than the outer diameter of the sealing ring. The flared design makes the inlet piston easier to assemble and disassemble, facilitating cleaning and maintenance. Simultaneously, when the piston is pushed to its extreme position, because the flared diameter is larger than the outer diameter of the sealing ring, the seal automatically fails, forming a pressure relief channel to prevent damage to the device or liquid spraying due to overpressure, thus improving safety.

[0010] In some specific examples, the inlet piston includes a piston rod and a piston seat, with a sealing ring disposed on the piston seat, and an inlet channel axially penetrating both the piston rod and the piston seat. By using a separate design for the piston rod and piston seat, and by placing a sealing ring on the piston seat, and by having an inlet channel penetrating both the piston rod and piston seat, both sealing reliability and controllable liquid flow during piston movement are ensured, thus improving the compactness and sealing performance of the structure.

[0011] In some specific examples, the top of the cylinder is equipped with a cover, and a through hole is opened in the middle of the cover. One end of the piston rod passes through the through hole and extends out of the cover. The through hole in the cover and the piston rod extending out of the cylinder make it easy for the operator to observe the piston's movement position and connect with the external liquid extraction component; at the same time, the cover guides and limits the piston rod to prevent deviation and ensure the stability and durability of the movement.

[0012] In some specific examples, the cylinder is transparent and has graduation markings on its outer wall. The transparent structure and graduation markings allow the operator to visually observe the liquid level and piston position, facilitating precise control of dispensing and improving consistency and reliability.

[0013] In some specific examples, the bottom of the cylinder is provided with a connecting part. The connecting part is a hollow structure and communicates with the internal cavity of the cylinder. The connection point is connected to the bottom cavity of the cylinder through a gradually expanding conical surface. The hollow structure of the connecting part at the bottom of the cylinder, which is connected to the internal cavity in a gradually expanding manner, can reduce the flow resistance of the liquid when entering the outlet head, improve the stability of the liquid output, and provide reliable space for the arrangement of the sealing structure.

[0014] In some specific examples, a resilient reset structure is provided between the pressing part and the connecting part. This resilient reset structure ensures that the dispensing head quickly returns to a sealed state after the operator releases their grip, preventing liquid leakage, achieving automatic shut-off, and improving operational safety and ease of use.

[0015] In some specific examples, two sealing rings are provided at the interface between the liquid outlet head and the hollow structure of the connecting part. One sealing ring seals against the cylindrical surface of the hollow structure, and the other sealing ring seals against the gradually expanding conical surface. The two sealing rings at the interface between the liquid outlet head and the connecting part, respectively sealing against the cylindrical and conical surfaces, form a double seal, improving the reliability of the gas-liquid seal, ensuring oxygen isolation during dispensing, and preventing liquid oxidation or leakage.

[0016] In some specific examples, the inlet is located on the surface of the outlet between the two sealing rings. Placing the inlet between the two sealing rings ensures that the liquid output path is completely within a double-sealed zone, further preventing air ingress or liquid leakage, and ensuring the stability and oxygen barrier of the output process.

[0017] In some specific examples, the surface of the dispensing head is provided with a groove, and the center of the pressing part has a corresponding mounting notch. A silicone conical nozzle can also be installed in the groove. The groove on the dispensing head surface and the corresponding mounting notch in the center of the pressing part facilitate quick assembly and disassembly, improving the installation accuracy and ease of operation of the components, while ensuring the synchronous reliability of the pressing drive and the movement of the dispensing head. Silicone conical nozzles of different wall thicknesses can provide a temporary seal when mated with aluminum foil suction bags.

[0018] The oxygen-free quantitative dispensing device provided by this utility model has the following beneficial effects: Through the double-sealing structure of the outer sealing ring of the inlet piston and the outlet head, the entire dispensing process is always kept in an air-isolated state, which can effectively reduce oxidation reactions and maintain the original flavor of beverages such as wine, sake, and coffee.

[0019] The cylinder is equipped with a movable inlet piston inside, and the outer wall is equipped with transparent scales, allowing the operator to intuitively grasp the liquid level and accurately control the dispensing amount, avoiding the problem of overfilling or underfilling caused by the lack of visibility in traditional aluminum foil spout bags.

[0020] The upper end of the cylinder is designed with a flared opening. When the piston is accidentally pushed to its limit position, the sealing ring automatically fails to form a pressure relief gap, which releases pressure in time and prevents the continuous injection of gas into the cylinder from causing parts to fall off or liquid to spray out, thus improving the safety of use. Attached Figure Description

[0021] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of the present invention. Other embodiments and many anticipated advantages of the embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0022] Figure 1 This is a schematic diagram of the structure of an oxygen-barrier quantitative dispensing device according to an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of an oxygen-barrier quantitative dispensing device according to a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the cooperation between the oxygen-barrier quantitative dispensing device and the liquid dispensing bottle according to a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the bottle clamping structure and the bottle body according to a specific embodiment of the present invention.

[0023] The meanings of the numbers in the diagram are as follows: 1-Cylinder body, 2-Top cover, 3-Liquid inlet piston, 31-Liquid inlet channel, 32-Piston seat, 33-Sealing ring, 4-Pressing part, 5-Liquid outlet head, 51-Sealing ring I, 52-Liquid inlet, 53-Sealing ring II, 6-Spring, 7-Bottle body, 8-Liquid dispensing assembly, 9-Inflating head, 10-Clamping mechanism, 11-Dispensing bag. Detailed Implementation

[0024] In the following detailed description, reference is made to the accompanying drawings, which form part of the detailed description and illustrate illustrative specific embodiments in which the present invention may be practiced. In this regard, directional terms such as “top,” “bottom,” “left,” “right,” “up,” “down,” etc., are used with reference to the orientation of the described figures. Because components of the embodiments can be positioned in several different orientations, directional terms are used for illustrative purposes and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present invention. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

[0025] This invention proposes an oxygen-free quantitative dispensing device. Figure 1 A schematic diagram of an oxygen-barrier quantitative dispensing device according to an embodiment of the present invention is shown, as follows: Figure 1 As shown, the oxygen-free quantitative dispensing device of this utility model includes a cylinder 1, a top cover 2, a liquid inlet piston 3, a pressing part 4, and a liquid outlet head 5 disposed at the lower end of the cylinder 1. The cylinder 1 is used to contain and guide the liquid to be transferred; the top cover 2 is installed at the top opening of the cylinder 1 to close the cylinder 1; the liquid inlet piston 3 is disposed inside the cylinder 1 and extends beyond the top cover 2; the lower part of the cylinder 1 is provided with the pressing part 4 and the liquid outlet head 5. The operator can push the pressing part 4 axially to drive the liquid outlet head 5, selectively connecting the liquid inlet inside the liquid outlet head 5 with the internal cavity of the cylinder 1, thereby outputting or stopping the liquid.

[0026] Figure 2 A cross-sectional schematic diagram of an oxygen-barrier quantitative dispensing device according to a specific embodiment of the present invention is shown, as follows: Figure 2 As shown, the cylinder 1 is the main component of the device, with a longitudinally extending cavity inside to hold the liquid and guide the inlet piston 3. The lower end of the cylinder 1 has a connection port to the outlet head 5, serving as the inlet for liquid output. The inner wall of the cylinder 1 also has graduation markings for easy observation of the piston position by the operator, thus controlling the metering accuracy. The inlet piston 3 can slide back and forth along the axial direction of the cylinder 1, and its body is supported by a piston seat 32. A sealing ring 33 is provided on the outer periphery of the inlet piston 3. The sealing ring 33 is made of elastic material, with an outer diameter slightly larger than the inner diameter of the cylinder 1, forming an interference fit during installation to ensure a tight seal between the piston and the inner wall of the cylinder 1 during piston movement. An inlet channel 31 is provided inside the piston. The upper end of the inlet piston 3 passes through the upper cover 2 via a piston rod, and the end of the piston rod has a countersunk structure that cooperates with the external liquid extraction assembly. The outlet head 5 is fixed to the lower end of the cylinder 1 and is the key component for liquid output. The dispensing head 5 has an inlet 52 inside, which communicates with the cavity of the cylinder 1 when the pressing part 4 drives the valve. Sealing ring I (51) and sealing ring II (53) are respectively provided at the upper and lower ends of the inlet 52, forming an isolation zone between the two sealing rings. During dispensing, the operator pushes the pressing part 4 downwards, which drives the internal valve to open, allowing the inlet 52 of the dispensing head 5 to communicate with the internal cavity of the cylinder 1, thus dispensing the liquor. When the pressing part 4 is released, the spring 6 resets the pressing part 4, causing the piston 3 and valve to return to their closed state.

[0027] In a specific embodiment, the upper port of the cylinder 1 is a flared structure. When the inlet piston 3 is assembled and disassembled, the flared opening facilitates the smooth entry and exit of the piston, improving the convenience of cleaning and maintenance. In the normal operating section, the sealing ring 33 is tightly fitted with the straight pipe section of the cylinder 1 to ensure the sealing of the internal cavity. When the piston 3 is continuously pressed by the liquid to the limit position, the diameter of the flared section is slightly larger than the outer diameter of the sealing ring 33, causing the sealing ring to lose its fit and forming a pressure relief gap, thereby achieving overpressure protection.

[0028] In a specific embodiment, a connecting part is provided at the bottom of the cylinder 1. This connecting part has a hollow structure, and its internal cavity is connected to the main cavity of the cylinder 1. The connection between the connecting part and the bottom of the cylinder 1 adopts a gradually expanding conical transition, so that the liquid can be smoothly introduced when flowing from the cylinder 1 to the connecting part, avoiding obvious eddies or local impacts at the turning point, improving the stability and smoothness of the liquid flow, and also providing sufficient installation space for the arrangement of the lower sealing element. An elastic reset structure is provided between the pressing part 4 and the connecting part. This elastic reset structure is preferably a helical spring 6, one end of which abuts against the pressing part 4, and the other end abuts against the connecting part or the corresponding fixed step. When the operator presses the pressing part 4 to drive the liquid outlet head 5 to connect, the spring 6 is compressed; when released, the spring 6 releases its stored energy, pushing the pressing part 4 and the liquid outlet head 5 back to the initial sealing position, thereby ensuring that the liquid outlet head 5 automatically resets and reliably closes after the operation is completed.

[0029] In a specific embodiment, two sealing rings are provided at the mating point between the liquid outlet head 5 and the hollow structure of the connecting part: sealing ring I (51) and sealing ring II (53). Sealing ring II (53) is sealed to the cylindrical surface of the connecting part, and sealing ring I (51) is sealed to the gradually expanding conical surface. Through this double-seal design, when the liquid outlet head 5 is assembled to the connecting part, gas-liquid isolation can be formed at different angles and on different contact surfaces, avoiding leakage caused by wear or deformation of a single sealing ring, thereby improving the overall sealing reliability.

[0030] In a specific embodiment, the outer surface of the dispensing head 5 is provided with an annular groove, and the middle of the pressing part 4 is provided with an installation notch corresponding to the groove. After the pressing part 4 is engaged with the groove of the dispensing head 5 through the notch, a stable transmission connection can be formed. On the one hand, this structure allows the pressing part 4 to firmly drive the axial displacement of the dispensing head 5 during operation, avoiding slippage or misalignment; on the other hand, it also facilitates the assembly, disassembly, and maintenance of the dispensing head 5, improving the overall operability and service life. Silicone conical nozzles of different wall thicknesses can also be inserted into the groove of the dispensing head according to the diameter of the dispensing bag nozzle. After insertion, the silicone conical nozzle can fit tightly with the groove and form a temporary seal when mating with the aluminum foil nozzle bag, thereby improving the compatibility and sealing reliability of the connection and ensuring effective prevention of air entry during the dispensing process.

[0031] Figure 3 A schematic diagram showing the cooperation between the oxygen-barrier quantitative dispensing device and the liquid dispensing bottle according to a specific embodiment of the present invention is shown, as follows: Figure 3 As shown, bottle 7 is the original bottled beverage container to be dispensed, and its bottle mouth is equipped with a liquid dispensing component 8. Inert gas is injected into bottle 7 through an external inflation head 9 to establish a stable positive pressure environment inside the bottle. In actual operation, inert gas is slowly injected into bottle 7 through inflation head 9, so that the beverage inside the bottle is output through liquid dispensing component 8 and liquid inlet piston 3 under positive pressure and enters the cylinder 1. The operator can observe the liquid level change by referring to the scale on the outside of cylinder 1, thereby controlling the piston stroke to be near the target amount; when it is close to the target amount, the external inflation head 9 is removed to cut off the inflow. During the liquid injection into cylinder 1, the liquid outlet 5 at the bottom is kept closed under the action of spring 6. Specifically, the internal valve of liquid outlet 5 is in a sealed position under the return force of spring 6, and the liquid inlet 52 is not connected to the cavity of cylinder 1, thereby ensuring that the liquid can only be retained in cylinder 1 during the injection process and will not leak out prematurely. This sealed state maintains an oxygen-free environment during the injection phase and prevents liquid from flowing into downstream containers before the metering is completed.

[0032] In a specific embodiment, to improve operational stability and safety, a clamping structure 10 for fixing and supporting the bottle 7 can be provided. This clamping structure 10 is positioned relative to the device, ensuring the bottle 7 remains stable during the dispensing process. The clamping structure also facilitates single-person operation: the operator can complete the liquid dispensing operation without holding the bottle 7.

[0033] Figure 4 A schematic diagram showing the engagement of a bottle clamping structure with a bottle according to a specific embodiment of the present invention is shown, as follows: Figure 4 As shown, in Figure 3 After the bottle 7 and cylinder 1 work together to inject and complete the quantitative filling, the oxygen-barrier quantitative dispensing device of this utility model can be further connected to the dispensing bag 11. The dispensing bag 11 can be a spout bag made of aluminum foil, and its opening can be inserted into the dispensing head 5. When the pressing part 4 is not operated, the internal valve of the dispensing head 5 remains closed under the action of the spring 6, and the liquid in the cylinder 1 will not leak out prematurely. When the operator needs to inject the quantitative liquid into the dispensing bag 11, the pressing part 4 is pushed down, which drives the dispensing head 5 and the valve connected to it to move, so that the inlet 52 of the dispensing head 5 is connected to the inner cavity of the cylinder 1. At this time, the liquid flows from the cylinder 1 into the dispensing bag 11 under the action of gravity or pressure. After the required filling is achieved, the pressing part 4 is released, and the valve returns to the sealed position under the action of the restoring force of the spring 6, the inlet 52 is closed, and the dispensing process ends immediately.

[0034] In specific embodiments, such as Figure 3 and 4As shown, an indicator rod 34 is also provided on the piston rod. The indicator rod 34 is mounted on the side wall of the piston rod via a pivot, and a spring structure is fitted at its base, giving the indicator rod 34 a certain degree of lateral elasticity, similar to an umbrella handle mechanism. Under normal conditions, it is constrained and closed by the opening of the top cover; when the liquid inlet piston 3 moves upward to the preset scale position, the end of the indicator rod 34 crosses the restriction of the top cover opening and automatically flips or falls under the action of the spring force, thus providing the operator with a clear quantitative indication. Through this mechanism, it is possible to intuitively determine whether the liquid has reached the target volume without relying on external sensors or weighing devices, further improving the convenience and accuracy of dispensing operations.

[0035] pass Figure 4 The structure and actions shown in this invention, when coordinated, realize a complete chain from bottle dispensing to quantitative dispensing via a cylinder to oxygen-free output via a dispensing bag. Throughout the process, the bottle 7, dispensing component 8, cylinder 1, and dispensing bag 11 operate under double sealing and inert gas protection, effectively preventing liquid oxidation and contamination while ensuring the safety and accuracy of the dispensing process. In some specific applications, the liquid in bottle 7 can be products such as wine, sake, or specialty coffee that require bottle dispensing for sharing and tasting.

[0036] Obviously, those skilled in the art can make various modifications and changes to the embodiments of this utility model without departing from the spirit and scope of this utility model. In this way, this utility model is also intended to cover such modifications and changes if they fall within the scope of the claims of this utility model and their equivalents. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not indicate that a combination of these measures cannot be used for profit. Any reference numerals in the claims should not be considered as limiting the scope.

Claims

1. An oxygen-free quantitative dispensing device, characterized in that, include: The cylinder comprises a liquid inlet piston, a liquid outlet head, and a pressing part. The liquid inlet piston is axially displaceable within the cylinder, and a liquid inlet channel is provided through its interior. A sealing ring is provided at the interface between the liquid inlet piston and the inner wall of the cylinder. The pressing part and the liquid outlet head are located at the bottom of the cylinder. The liquid outlet head is provided with a liquid inlet and a sealing structure. The pressing part drives the liquid outlet head to move, selectively connecting or disconnecting the liquid inlet from the internal cavity of the cylinder.

2. The oxygen-free quantitative dispensing device according to claim 1, characterized in that, The upper port of the cylinder is a flared structure, and the flared structure near the top of the cylinder has a size larger than the outer diameter of the sealing ring.

3. The oxygen-free quantitative dispensing device according to claim 1, characterized in that, The inlet piston includes a piston rod and a piston seat, the sealing ring is disposed on the piston seat, and the inlet channel passes through the piston rod and the piston seat axially.

4. The oxygen-free quantitative dispensing device according to claim 3, characterized in that, The top of the cylinder is provided with a cover, and a through hole is opened in the middle of the cover. One end of the piston rod passes through the through hole and extends out of the cover.

5. The oxygen-free quantitative dispensing device according to claim 1, characterized in that, The cylinder is transparent and has scale markings on its outer wall.

6. The oxygen-free quantitative dispensing device according to claim 1, characterized in that, The bottom of the cylinder is provided with a connecting part, which is a hollow structure and communicates with the internal cavity of the cylinder. The connection point is connected to the bottom cavity of the cylinder through a gradually expanding conical surface.

7. The oxygen-free quantitative dispensing device according to claim 6, characterized in that, An elastic reset structure is provided between the pressing part and the connecting part.

8. The oxygen-free quantitative dispensing device according to claim 6, characterized in that, Two sealing rings are provided at the junction of the liquid outlet head and the hollow structure of the connecting part. One sealing ring is sealed to the cylindrical surface of the hollow structure, and the other sealing ring is sealed to the gradually expanding conical surface.

9. The oxygen-free quantitative dispensing device according to claim 8, characterized in that, The inlet is located on the surface of the outlet head between the two sealing rings.

10. The oxygen-free quantitative dispensing device according to claim 1, characterized in that, The surface of the liquid outlet head is provided with a groove, and the middle part of the pressing part is provided with an installation notch corresponding to the groove. A silicone conical nozzle can also be provided in the groove.

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