A vertical nitrogen filling device with nitrogen air curtain isolation

Abstract

The utility model discloses a vertical nitrogen filling device with nitrogen air curtain isolation, including base, oral liquid limiting disc, bottle body clamping groove, cover rolling mechanism and nitrogen filling subassembly, oral liquid limiting disc rotation is connected in the base, and the recessed of bottle body clamping groove is set at the edge of oral liquid limiting disc, and cover rolling mechanism and nitrogen filling subassembly all set up at the edge of base, in the utility model, through setting nitrogen filling subassembly, and then through the cylinder drive support plate moves, and then realize for the quick regulation of the overall height of inner ring nitrogen filling pipe, outer ring air curtain pipe, and through the nitrogen filling operation of inner ring nitrogen filling pipe, and through the nitrogen curtain of outer ring air curtain pipe spouts, and nitrogen curtain makes the oxygen residue of inner ring nitrogen filling pipe lifting greatly reduce, and the air infiltration is inhibited, and the airflow uniformity is increased, and the oxygen concentration difference of bottle edge and center is reduced, and through the setting of manual regulating valve, pressure stabilizing tank and mechanical pressure relief valve, make the device can guarantee constant pressure.

Description

Technical Field

[0001] This utility model relates to a nitrogen filling device, specifically a vertical nitrogen filling device with a nitrogen air curtain for isolation, belonging to the technical field of oral liquid filling equipment. Background Technology

[0002] The core purpose of setting up a nitrogen purging device in oral liquid filling equipment is to isolate oxygen with high-purity nitrogen, protect the active ingredients that are sensitive to oxidation, ensure product quality stability and extend shelf life. As an inert gas, nitrogen can form a gaseous barrier on the surface of the oral liquid, replace the oxygen in the headspace of the container, and prevent active ingredients (such as vitamins, polyphenols, enzymes, and certain biological agents) from oxidizing, deteriorating, discoloring or becoming inactive when in contact with oxygen. Therefore, nitrogen purging is also an essential step in the filling of oral liquids.

[0003] However, most existing nitrogen filling devices have various problems. For example, in the nitrogen filling device for an oral liquid production line disclosed in announcement number CN215475881U, although it can perform nitrogen filling operations on the bottle, the existing technology in this technical solution and most current nitrogen filling devices generally adopts a fixed nitrogen filling head that blows directly into the bottle mouth. The fixed distance direct blowing mode leads to uneven distribution of nitrogen flow field, and oxygen residue is easily formed in dead corner areas inside the bottle. Moreover, when the nitrogen filling head is raised, the bottle mouth is exposed, which causes air backflow and increases oxygen residue. At the same time, the wide bottle mouth has uneven replacement, with strong airflow in the center of the bottle mouth and weak airflow at the edge, resulting in an oxygen concentration gradient >1.5%. When the oxygen exceeds the standard, the machine can only be stopped and the valve adjusted manually, without any control means. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to solve the aforementioned shortcomings of existing technologies by proposing a vertical nitrogen filling device with nitrogen air curtain isolation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vertical nitrogen filling device with nitrogen air curtain isolation includes a base, an oral liquid limiting plate, a bottle slot, a capping mechanism, and a nitrogen filling assembly. The oral liquid limiting plate is rotatably connected to the base. The bottle slot is recessed at the edge of the oral liquid limiting plate. The capping mechanism and the nitrogen filling assembly are both located at the edge of the base.

[0007] The nitrogen filling assembly includes a support frame, a support plate, a cylinder, an inner ring nitrogen filling pipe, and an outer ring air curtain pipe. The support frame is fixed to the edge of the base, the support plate is slidably connected to the support frame, the cylinder is fixed to the top of the support frame, and the telescopic part of the cylinder is connected to the support plate. The outer ring air curtain pipe is fixed to the support plate, with one end located at the bottom of the support plate and the other end located at the top of the support plate. The inner ring nitrogen filling pipe is coaxially fixed inside the outer ring air curtain pipe, and the diameter of the inner ring nitrogen filling pipe is smaller than that of the outer ring air curtain pipe.

[0008] As a further improvement of this utility model: the top end of the inner ring nitrogen filling pipe is connected to a first gas guide pipe, one end of the first gas guide pipe is connected to a pressure stabilizing tank, and a mechanical pressure relief valve is provided on the pressure stabilizing tank.

[0009] As a further improvement of this utility model: a second air guide pipe is provided on the outer wall of the outer ring air curtain pipe, one end of the second air guide pipe is connected to the internal cavity of the outer ring air curtain pipe, and a manual adjustment valve is provided on the second air guide pipe.

[0010] As a further improvement of this utility model: a rectangular groove is recessed on the support frame, and a protrusion is fixed on one side of the support plate, the protrusion being slidably engaged in the rectangular groove.

[0011] As a further embodiment of this utility model: two outer ring air curtain pipes are symmetrically arranged at both ends of the support plate, and the first air guide pipes of the two outer ring air curtain pipes are interconnected and combined to form a pipeline structure.

[0012] As a further improvement of this utility model: an auxiliary air curtain is fixed at the edge of the base, and the auxiliary air curtain is located between the capping mechanism and the nitrogen filling assembly.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, a nitrogen-filling assembly is installed, which in turn moves the support plate via a cylinder, thereby enabling rapid adjustment of the overall height of the inner ring nitrogen-filling pipe and the outer ring air curtain pipe. Simultaneously, nitrogen filling is performed through the inner ring nitrogen-filling pipe, and a nitrogen curtain is sprayed out through the outer ring air curtain pipe. This nitrogen curtain significantly reduces residual oxygen when the inner ring nitrogen-filling pipe is raised, inhibiting air backflow and increasing airflow uniformity. It also reduces the oxygen concentration difference between the bottle edge and center. Furthermore, the installation of a manual adjusting valve, a pressure stabilizing tank, and a mechanical pressure relief valve ensures constant pressure while also achieving a zero-control system, allowing for fully manual operation. The independent air sources for the inner ring nitrogen-filling pipe and the outer ring air curtain pipe allow for delayed closure of the outer ring air curtain pipe, further isolating the air. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the nitrogen-filling component structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure of the second air guide tube of this utility model;

[0018] Figure 4 This is a schematic diagram of the first air guide tube and its connection structure of the present invention.

[0019] In the diagram: 1. Base, 2. Oral liquid limiting plate, 3. Bottle slot, 4. Capping mechanism, 5. Nitrogen filling assembly, 51. Support frame, 52. Support plate, 53. Cylinder, 54. Inner ring nitrogen filling pipe, 55. Outer ring air curtain pipe, 56. First air guide pipe, 57. Second air guide pipe, 58. Manual regulating valve, 59. Pressure stabilizing tank, 510. Mechanical pressure relief valve, 6. Auxiliary air curtain. Detailed Implementation

[0020] 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.

[0021] Example 1

[0022] like Figures 1 to 4 As shown, a vertical nitrogen filling device with nitrogen air curtain isolation includes a base 1, an oral liquid limiting plate 2, a bottle slot 3, a capping mechanism 4, and a nitrogen filling component 5. The oral liquid limiting plate 2 is rotatably connected to the base 1. The bottle slot 3 is recessed at the edge of the oral liquid limiting plate 2. The capping mechanism 4 and the nitrogen filling component 5 are both located at the edge of the base 1.

[0023] The nitrogen filling assembly 5 includes a support frame 51, a support plate 52, a cylinder 53, an inner ring nitrogen filling pipe 54, and an outer ring air curtain pipe 55. The support frame 51 is fixed at the edge of the base 1. The support plate 52 is slidably connected to the support frame 51. The cylinder 53 is fixed to the top of the support frame 51, and the telescopic part of the cylinder 53 is connected to the support plate 52. The outer ring air curtain pipe 55 is fixed to the support plate 52, with one end located at the bottom of the support plate 52 and the other end located at the top of the support plate 52. The inner ring nitrogen filling pipe 54 is coaxially fixed inside the outer ring air curtain pipe 55, and the diameter of the inner ring nitrogen filling pipe 54 is smaller than that of the outer ring air curtain pipe 55.

[0024] The top end of the inner ring nitrogen filling pipe 54 is connected to a first air guide pipe 56, one end of the first air guide pipe 56 is connected to a pressure stabilizing tank 59, and a mechanical pressure relief valve 510 is installed on the pressure stabilizing tank 59. A second air guide pipe 57 is installed on the outer wall of the outer ring air curtain pipe 55, one end of the second air guide pipe 57 is connected to the internal cavity of the outer ring air curtain pipe 55, and a manual regulating valve 58 is installed on the second air guide pipe 57.

[0025] In this invention, by setting up a nitrogen filling component 5, the cylinder 53 drives the support plate 52 to move, thereby achieving rapid adjustment of the overall height of the inner ring nitrogen filling pipe 54 and the outer ring air curtain pipe 55. At the same time, nitrogen filling is performed through the inner ring nitrogen filling pipe 54, and nitrogen curtain is sprayed out through the outer ring air curtain pipe 55. The nitrogen curtain significantly reduces the oxygen residue when the inner ring nitrogen filling pipe 54 is raised, inhibits air backflow, increases airflow uniformity, and reduces the oxygen concentration difference between the edge and center of the bottle. With the setting of a manual adjustment valve 58, a pressure stabilizing tank 59, and a mechanical pressure relief valve 510, the device can achieve a zero control system while ensuring constant pressure. It can be manually operated throughout the process. Furthermore, the air sources of the inner ring nitrogen filling pipe 54 and the outer ring air curtain pipe 55 are independent, allowing the outer ring air curtain pipe 55 to close with a delay, further isolating the air.

[0026] Example 2

[0027] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0028] The support frame 51 has a rectangular groove recessed inward. A protrusion is fixed on one side of the support plate 52. The protrusion slides and engages in the rectangular groove. The protrusion limits the support plate 52 and guides it through the rectangular groove, enabling the support plate 52 to slide in a specific direction.

[0029] The support plate 52 has two outer ring air curtain pipes 55 symmetrically arranged at both ends, and the first air guide pipes 56 of the two outer ring air curtain pipes 55 are connected to each other and combined to form a pipeline structure. The device can fill two bottles with nitrogen at one time through the two outer ring air curtain pipes 55, thereby improving efficiency.

[0030] An auxiliary air curtain 6 is fixed at the edge of the base 1. The auxiliary air curtain 6 is located between the capping mechanism 4 and the nitrogen filling assembly 5. The auxiliary air curtain 6 further prevents air backflow.

[0031] When using this nitrogen filling device, first manually adjust the pressure of the mechanical pressure relief valve 510 to make the pressure of the pressure stabilizing tank 59 reach the threshold. Then, the cylinder 53 drives the support plate 52 to descend. When the inner ring nitrogen filling pipe 54 is 10mm away from the bottle opening, open the manual adjustment valve 58 to make nitrogen gas spray out from the outer ring air curtain pipe 55 to form a nitrogen curtain. Then continue to drive the inner ring nitrogen filling pipe 54 to move down. After the inner ring nitrogen filling pipe 54 is in place, the nitrogen filling operation can be carried out. After the nitrogen filling is completed, as the support plate 52 rises, the outer ring air curtain pipe 55 closes after a delay of 0.5s after the inner ring nitrogen filling pipe 54 separates from the bottle.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vertical nitrogen filling device with nitrogen air curtain isolation, comprising a base (1), an oral liquid limiting plate (2), a bottle slot (3), a capping mechanism (4), and a nitrogen filling assembly (5), characterized in that, The oral liquid limiting plate (2) is rotatably connected to the base (1), the bottle slot (3) is recessed at the edge of the oral liquid limiting plate (2), and the capping mechanism (4) and the nitrogen filling assembly (5) are both located at the edge of the base (1). The nitrogen filling assembly (5) includes a support frame (51), a support plate (52), a cylinder (53), an inner ring nitrogen filling pipe (54), and an outer ring air curtain pipe (55). The support frame (51) is fixed at the edge of the base (1). The support plate (52) is slidably connected to the support frame (51). The cylinder (53) is fixed at the top of the support frame (51), and the telescopic part of the cylinder (53) is connected to the support plate (52). The outer ring air curtain pipe (55) is fixed on the support plate (52), with one end located at the bottom of the support plate (52) and the other end located at the top of the support plate (52). The inner ring nitrogen filling pipe (54) is coaxially fixed inside the outer ring air curtain pipe (55), and the diameter of the inner ring nitrogen filling pipe (54) is smaller than that of the outer ring air curtain pipe (55).

2. The vertical nitrogen filling device with nitrogen air curtain isolation according to claim 1, characterized in that: The top end of the inner ring nitrogen filling pipe (54) is connected to a first gas guide pipe (56), one end of the first gas guide pipe (56) is connected to a pressure stabilizing tank (59), and a mechanical pressure relief valve (510) is provided on the pressure stabilizing tank (59).

3. A vertical nitrogen filling device with nitrogen air curtain isolation according to claim 1, characterized in that: A second air guide pipe (57) is provided on the outer wall of the outer ring air curtain pipe (55). One end of the second air guide pipe (57) is connected to the internal cavity of the outer ring air curtain pipe (55), and a manual regulating valve (58) is provided on the second air guide pipe (57).

4. A vertical nitrogen filling device with nitrogen air curtain isolation according to claim 1, characterized in that: The support frame (51) has a rectangular groove recessed inward, and a protrusion is fixed on one side of the support plate (52), which slides and engages in the rectangular groove.

5. A vertical nitrogen filling device with nitrogen air curtain isolation according to claim 2, characterized in that: The support plate (52) has two outer ring air curtain pipes (55) symmetrically arranged at both ends, and the first air guide pipes (56) of the two outer ring air curtain pipes (55) are connected to each other and combined to form a pipe structure.

6. A vertical nitrogen filling device with nitrogen air curtain isolation according to claim 1, characterized in that: An auxiliary air curtain (6) is fixed at the edge of the base (1), and the auxiliary air curtain (6) is located between the capping mechanism (4) and the nitrogen filling assembly (5).

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