Ginseng slice packaging device

Abstract

The utility model discloses a ginseng slice packaging device, which comprises a chamber, a plurality of packaging boxes, a plurality of packaging boxes, a plurality of packaging boxes and a plurality of packaging boxes, wherein an inlet channel, an outlet channel, a filling station and a heat-sealing station are arranged in the chamber; the flexible curtain group is arranged on the inlet channel and the outlet channel, the flexible curtain group comprises at least three layers of staggered and inclined flexible curtain sheets, the inclination directions of the adjacent flexible curtain sheets are opposite, and the adjacent flexible curtain sheets droop to the position below the conveying belt surfaces of the inlet channel and the outlet channel; and the micro-positive pressure mechanism is arranged at the top of the cavity, dry air is introduced into the cavity, and the pressure in the cavity is maintained to be + 5 Pa to + 10 Pa. The low-oxygen micro-positive-pressure environment is constructed by adopting the low-cost flexible curtain group, local nitrogen protection is arranged at the most easily oxidized point, the benefit is improved, the difficulty in transforming the existing equipment is low, and the problems of oxygen exposure and thermal damage of ginseng slices in the packaging process can be obviously reduced completely under the controllable cost, so that the saponin content is effectively protected, and the packaging quality is improved. The saponin content loss of the ginseng slices is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of reference film packaging equipment, and in particular to a reference film packaging device. Background Technology

[0002] American ginseng slices are rich in active ingredients such as ginsenosides. During the packaging process, they are susceptible to oxidation, damp heat, and other factors, leading to saponin loss. Traditional packaging devices expose the ginseng slices to air while they are being transported by conveyor belt. Prolonged contact with oxygen (O2≥21%) causes saponin oxidation and degradation. When the packaging bag is filled, the opening is left open, allowing external moisture (RH>60%) to penetrate and cause the ginseng slices to absorb moisture, activating residual enzymatic reactions and accelerating saponin hydrolysis. The heat-sealing knife comes into direct contact with the packaging bag at high temperatures (150-200℃), and the localized high temperature causes heat-sensitive saponins (such as Rg1 and Re) in adjacent ginseng slices to decompose, resulting in a high saponin loss rate in the heat-sealed area.

[0003] Existing nitrogen-filled packaging equipment requires maintaining an inert atmosphere throughout the chamber, with nitrogen consumption exceeding 15 m³ / h (based on 20 bags / minute), resulting in high production costs and poor economic efficiency. Furthermore, the inlet / outlet of continuous production lines is difficult to seal due to material passage, leading to nitrogen leakage and fluctuations in residual oxygen levels, which cannot stably meet the low-oxygen preservation requirements of American ginseng slices. Utility Model Content

[0004] The purpose of this utility model is to provide a reference sheet packaging device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a reference sheet packaging device, comprising:

[0007] The chamber is equipped with an inlet and outlet channel, as well as a filling station and a heat sealing station.

[0008] A flexible curtain assembly is provided at the entrance channel and the exit channel. The flexible curtain assembly includes at least three layers of staggered and inclined flexible curtains. The adjacent flexible curtains are inclined in opposite directions and hang down to the bottom of the conveyor belt surface of the entrance channel and the exit channel.

[0009] A micro-positive pressure mechanism is located at the top of the chamber, which introduces dry air into the chamber to maintain the pressure inside the chamber at +5 to +10 Pa.

[0010] As an extension of the above scheme: the inclination angle of each layer of the flexible curtain group is 20°±2°, the odd-numbered layers of curtains are inclined outwards, and the even-numbered layers of curtains are inclined inwards, and the bottom of the flexible curtain is provided with a serrated groove.

[0011] As an extension of the above scheme: the spacing between the flexible slats of adjacent layers of the flexible curtain group is 200-300mm, and the spacing between the flexible slats is the distance between them at the conveyor belt surface.

[0012] As an extension of the above solution: the micro-positive pressure mechanism includes:

[0013] An air dryer has an air inlet channel for outputting dry air, the air inlet channel being located above the heat sealing station;

[0014] A pressure sensor is used to monitor the pressure inside the chamber in real time and output a pressure feedback signal;

[0015] A PID controller is used to adjust the air intake flow of the air dryer according to the pressure feedback signal to maintain a slight positive pressure of +5-10Pa in the chamber.

[0016] As an extension of the above solution, the micro-positive pressure mechanism also includes an exhaust pipe and a humidity sensor. The exhaust pipe is disposed on the side wall of the chamber, and the humidity sensor is used to detect the humidity of the gas in the chamber in real time.

[0017] As an extension of the above solution: the filling station is provided with a first nitrogen gas mechanism. The first nitrogen gas mechanism is a ring structure, which is erected on the filling station and is higher than the packaging bag on the filling station. The bottom of the first nitrogen gas mechanism is provided with a porous nitrogen gas distribution plate. The porous nitrogen gas distribution plate is provided with a first air hole and a second air hole for introducing nitrogen gas into the opening of the packaging bag that is being fed.

[0018] As an extension of the above scheme: the first air hole and the second air hole are arranged in an alternating ring array, the first air hole is arranged horizontally, and the second air hole is arranged at an angle downward and pointing towards the opening of the packaging bag.

[0019] As an extension of the above scheme, an oxygen concentration detector is installed in the chamber.

[0020] As an extension of the above solution: the heat sealing station is equipped with a second nitrogen gas mechanism, which is located on both sides of the heat sealing station and includes:

[0021] Nitrogen nozzles are positioned on both sides of the gap between the heat sealing knife and the packaging bag at the heat sealing station, and are horizontally inclined downwards toward the gap between the heat sealing knife and the packaging bag.

[0022] The pulse controller activates nitrogen 0.5-1 seconds before the heat sealing knife presses down and shuts off when the heat sealing knife contacts the bag opening. Nitrogen is then sprayed out from the nitrogen nozzle.

[0023] As an extension of the above solution: the heat sealing station is equipped with a pre-cooling device, and the nitrogen gas is pre-cooled to 10-15°C by the pre-cooling device and then sprayed out through the nitrogen nozzle. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0025] Figure 1 This is a schematic diagram of the packaging device in the embodiment;

[0026] Figure 2 This is a schematic diagram of the structure of the flexible curtain in an embodiment.

[0027] In the attached diagram: 100: Chamber, 110: Inlet channel, 120: Outlet channel, 200: Filling station, 210: First nitrogen mechanism, 211: Porous nitrogen distribution plate, 300: Heat sealing station, 310: Second nitrogen mechanism, 311: Nitrogen nozzle, 320: Heat sealing knife, 400: Flexible curtain assembly, 410: Flexible curtain slats, 420: Serrated groove, 500: Micro positive pressure mechanism, 510: Air dryer, 520: Air inlet channel, 530: Pressure sensor, 540: Exhaust pipe, 550: Humidity sensor. Detailed Implementation

[0028] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] Reference Figure 1 and Figure 2The following are several embodiments of a reference sheet packaging device of the present invention.

[0033] like Figure 1 As shown, in some embodiments, a reference chip packaging device includes:

[0034] The chamber 100 is provided with an inlet channel 110, an outlet channel 120, a filling station 200, and a heat sealing station 300.

[0035] A flexible curtain assembly 400 is disposed in the inlet channel 110 and the outlet channel 120. The flexible curtain assembly 400 includes at least three layers of staggered and inclined flexible curtains 410. The adjacent flexible curtains 410 are inclined in opposite directions and hang down to the underside of the conveyor belt surface of the inlet channel 110 and the outlet channel 120.

[0036] A micro-positive pressure mechanism 500 is disposed at the top of the chamber 100, which introduces dry air into the chamber 100 to maintain the pressure inside the chamber 100 at +5 to +10 Pa. The dry air introduced has a dew point ≤ -40℃.

[0037] This embodiment employs low-cost physical barriers. Flexible slats or flexible transparent curtains (such as silicone strips or PVC soft curtains) are used to set up multiple layers (3-5 layers) of staggered suspension at the entrance and exit channels to form a "maze"-like channel, which physically blocks the free convection of air. Combined with the slight positive pressure in the cavity (maintained by a small amount of dry air or nitrogen), the airflow slowly seeps out.

[0038] In this embodiment, before production and processing, dry air is introduced through a micro-positive pressure mechanism to replace the humid and hot air in the chamber. Nitrogen can be introduced if necessary to create a low-oxygen environment (O2 ≤ 5%) within the chamber. During production, nitrogen is emitted from the filling and heat-sealing stations during filling or heat-sealing. Under normal circumstances, the low-oxygen environment within the chamber can be maintained continuously by the flexible curtain assembly blocking external air. The micro-positive pressure mechanism only needs to supplement a small amount of dry air. Compared to traditional nitrogen curtain setups, this significantly improves the economic efficiency of oxygen barrier. The synergistic effect of the flexible curtain assembly and the micro-positive pressure mechanism in this embodiment, by introducing dry air into the chamber to maintain a micro-positive pressure, ensures the stability of the low-oxygen environment within the chamber.

[0039] In some specific embodiments, by controlling the gap and limiting the drooping depth of the slats, the reference sheets (typically 1-3mm thick) are ensured to pass through without jamming. The flexible slats cover the full width of the channel and droop down to 15-25mm below the conveyor belt surface, that is, the two sides of the flexible slats droop down to 15-25mm below the conveyor belt surface, and the gap between the bottom center of the flexible slats and the conveyor belt surface is 5-8mm. The flexible slats are made of food-grade transparent PVC soft curtains (0.8-1.2mm thick), which have antistatic and low adsorption properties to prevent the reference sheets from sticking together. Nitrile rubber sealing strips (double-lip cross-section) are added to the edges of the slats to enhance the fit with the cavity wall. The flexible slats are configured with three layers, and each additional layer increases the oxygen barrier efficiency by approximately 30%.

[0040] In some preferred embodiments, the flexible curtain is made of ultra-soft food-grade silicone with a hardness of Shore A 30±5 (like the material of a baby pacifier). It bends under a force of 0.1N and droops down to 20mm below the conveyor belt surface to reduce the contact area. The bottom of the flexible curtain is treated with serrated grooves to reduce the contact resistance between the flexible curtain and the conveyor belt.

[0041] like Figure 1 and Figure 2 As shown, in some embodiments, the inclination angle of each layer of the flexible curtain assembly 400 is 20°±2°, with odd-numbered layers tilting outwards and even-numbered layers tilting inwards. The bottom of the flexible curtain 410 is provided with a serrated groove 420. The 20° outward tilt of the odd-numbered layers guides airflow outwards, while the 20° inward tilt of the even-numbered layers blocks external air, creating a maze effect. Air must follow a zigzag path, increasing the oxygen diffusion path and maintaining a stable oxygen concentration in the chamber at 3-5%. Furthermore, the staggered curtains form a turbulence suppression zone, where oxygen can only permeate through molecular diffusion, which is tens of times slower than airflow diffusion.

[0042] In some embodiments, the spacing between the flexible slats of adjacent layers of the flexible curtain assembly is 200-300mm. The spacing between the flexible slats is the distance between them at the conveyor belt surface, preferably 250mm. A spacing less than 200mm will result in the material passing through being too small, while a spacing greater than 300mm will result in the oxygen barrier effect being too large.

[0043] like Figure 1 As shown, in some embodiments, the micro-positive pressure mechanism 500 includes:

[0044] Air dryer 510 has an air inlet channel 520 for outputting dry air, the air inlet channel 520 being disposed above the heat sealing station 300;

[0045] Pressure sensor 530 is used to monitor the pressure inside the chamber 100 in real time and output a pressure feedback signal;

[0046] A PID controller is used to adjust the air intake flow of the air dryer 510 according to the pressure feedback signal, and maintain a slight positive pressure of +5-10Pa in the chamber 100.

[0047] In some specific embodiments, the micro-positive pressure mechanism introduces dry air (dew point ≤ -40℃) or low-purity nitrogen (O2 ≤ 5%), which is much cheaper than high-purity nitrogen. The chamber maintains a micro-positive pressure of +5 to +10 Pa, which is monitored in real time by a pressure sensor (accuracy ±1 Pa). Dry air is introduced through an air inlet pipe located at the top of the heat-sealing station, and the exhaust port is formed by the gap between the flexible curtain and the conveying surface, forming an airflow from inside the chamber to the outside. External air cannot enter the chamber due to the positive pressure, thus maintaining a low-oxygen environment inside the chamber. Compared with the oxygen concentration of about 21% in the traditional open environment, the measured oxygen concentration in this embodiment can be controlled at 3%-5%. If nitrogen is introduced to maintain the micro-positive pressure, the nitrogen consumption is only 1 / 10 to 1 / 5 of the full-chamber nitrogen filling scheme, and the energy consumption is greatly optimized.

[0048] like Figure 1 As shown, in some embodiments, the micro-positive pressure mechanism 500 further includes an exhaust pipe 540 and a humidity sensor 550. The exhaust pipe 540 is disposed on the side wall of the chamber 100, and the humidity sensor 550 is used to detect the humidity of the gas inside the chamber 100 in real time. The exhaust pipe 540 is equipped with an electric regulating valve that is linked to the humidity sensor. When the humidity sensor detects that the air humidity inside the chamber is greater than a set threshold, the exhaust pipe is opened by controlling the electric regulating valve to remove the high-humidity air and reduce the humidity of the chamber to ≤30%RH, effectively reducing the saponin hygroscopic degradation rate of the ginseng tablets during packaging.

[0049] In the low-oxygen environment maintained in the above embodiments, this invention utilizes localized nitrogen-protected encapsulation for production, which significantly reduces energy consumption costs compared to traditional solutions.

[0050] like Figure 1 As shown, in some embodiments, the filling station 200 is provided with a first nitrogen mechanism 210. The first nitrogen mechanism 210 is a ring structure, which is mounted on the filling station 200 and is higher than the packaging bag on the filling station 200. The bottom of the first nitrogen mechanism 210 is provided with a porous nitrogen distribution plate 211. The porous nitrogen distribution plate 211 is provided with a first air hole and a second air hole for introducing nitrogen into the opening of the packaging bag that is being fed.

[0051] In this embodiment, a first nitrogen gas mechanism with a ring structure is used to construct local nitrogen protection for the packaging bag during the material feeding process. The first and second air holes continuously introduce nitrogen gas into the area around the packaging bag and the bag opening at a flow rate of 0.3-0.5 m / s, so that the oxygen concentration in the filling area is ≤1%, which effectively reduces the residual oxygen in the bag after filling. At the same time, the nitrogen gas output by the first nitrogen gas mechanism in this embodiment can maintain a low oxygen environment in the chamber.

[0052] In some specific embodiments, the inner diameter of the annular structure is 40-60mm larger than the outer diameter of the bag opening, and the height is adjustable, with an adjustable range of 200-400mm. The 40-60mm annular gap forms a nitrogen retention zone (oxygen concentration ≤1%), covering the open area of ​​the bag opening. The height is adjustable to adapt to different bag types (stand-up pouch / back-seal bag), effectively reducing the amount of residual oxygen in the filling.

[0053] In some embodiments, the first and second vents are arranged in an alternating ring array, with the first vents horizontally positioned and the second vents angled downwards and pointing towards the opening of the packaging bag. The array of the first and second vents forms a nitrogen gas structure surrounding the packaging bag, creating a three-dimensional nitrogen barrier. The horizontal airflow from the first vents blocks air, while the oblique airflow from the second vents sweeps away residual oxygen inside the bag, covering the material drop path during filling, effectively reducing the amount of residual oxygen during filling.

[0054] In some embodiments, an oxygen concentration detector is provided in the chamber. The oxygen concentration detector is used to detect the oxygen concentration in the chamber and maintain the stability of the low-oxygen environment. The oxygen concentration detector forms a closed-loop control with the PID controller and the peripheral nitrogen supply system: when O2>5%, the micro positive pressure mechanism is controlled to output nitrogen or the first nitrogen mechanism is controlled to increase the nitrogen flow rate.

[0055] In some preferred embodiments, the oxygen concentration detector is positioned below the first nitrogen mechanism and forms a closed-loop control with the PID controller and the peripheral nitrogen supply system: when O2>1%, the nitrogen flow rate is increased by 20-30%.

[0056] In some embodiments, the heat sealing station 300 is provided with a second nitrogen gas mechanism 310, which is disposed on both sides of the heat sealing station and includes:

[0057] Nitrogen nozzles 311 are positioned on both sides of the gap between the heat sealing knife 320 and the packaging bag at the heat sealing station 300, and are horizontally inclined downwards toward the gap between the heat sealing knife 320 and the packaging bag. They are aligned with the gap between the heat sealing knife 320 and the packaging bag at a 45° angle, which can blow away residual oxygen inside the bag.

[0058] The pulse controller turns on nitrogen 0.5-1 seconds before the heat sealing knife 320 presses down and turns it off when the heat sealing knife contacts the bag opening. Nitrogen is sprayed out from the nitrogen nozzle 311 at a flow rate of 1.0-1.5 m / s.

[0059] This embodiment uses a 45° angled nozzle for precise nitrogen injection, allowing nitrogen to directly penetrate the gap between the heat-sealing knife and the packaging bag, reducing residual oxygen at the heat-sealing interface and improving oxygen barrier efficiency. Nitrogen is activated 0.5 seconds before the heat-sealing knife is pressed down, utilizing the time difference to complete oxygen replacement. There is no need to maintain continuous nitrogen injection, resulting in low-cost operation. Pulse injection (1.0-1.5m / s) reduces nitrogen consumption per bag to only 0.03m³, effectively lowering costs.

[0060] In some embodiments, the heat-sealing station is equipped with a pre-cooling device, and the nitrogen gas is pre-cooled to 10-15°C by the pre-cooling device before being sprayed out through the nitrogen nozzle. This embodiment effectively reduces the thermal decomposition rate of saponins through dual temperature control. The pre-cooled nitrogen gas (10-15°C) absorbs the radiant heat from the heat-sealing knife, causing the temperature of the adjacent ginseng slices to drop sharply from 102°C to 35-40°C. Pulse control (0.5-1 second) ensures that nitrogen gas is only sprayed before heat sealing, avoiding continuous cooling that could affect the sealing strength.

[0061] It should be noted that this utility model does not impose any restrictions on the means and structure of the heat-sealing station for packaging or the means and structure of the filling station for material feeding. For example, existing technologies can be used for clamping, opening, conveying, and heat sealing. This utility model aims to create a low-oxygen, micro-positive pressure environment in the packaging device using a low-cost flexible curtain assembly. Local nitrogen protection is provided at the most easily oxidized points (the path of the filling material and the residual oxygen problem inside the bag after packaging). A small amount of nitrogen is filled inside to form local micro-positive pressure protection, thereby improving efficiency. This utility model is easy to modify with existing equipment and can significantly reduce the oxygen exposure and heat damage of the ginseng slices during the packaging process at a controllable cost, thus effectively protecting the saponin content.

[0062] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A tablet encapsulation device, characterized by include: The chamber (100) is provided with an inlet channel (110) and an outlet channel (120), as well as a filling station (200) and a heat sealing station (300). A flexible curtain assembly (400) is disposed in the inlet channel (110) and the outlet channel (120). The flexible curtain assembly (400) includes at least three layers of staggered and inclined flexible curtains (410). The adjacent flexible curtains (410) are inclined in opposite directions and hang down to the underside of the conveyor belt surface of the inlet channel (110) and the outlet channel (120). A micro-positive pressure mechanism (500) is disposed at the top of the chamber (100) to introduce dry air into the chamber (100) and maintain the pressure inside the chamber (100) at +5 to +10 Pa.

2. The apparatus of claim 1, wherein: The inclination angle of each layer of the flexible curtain assembly (400) is 20°±2°. The odd-numbered layers of curtains are inclined outward, and the even-numbered layers of curtains are inclined inward. The bottom of the flexible curtain (410) is provided with a serrated groove (420).

3. The apparatus of claim 1, wherein: The spacing between the flexible curtain panels (410) of adjacent layers of the flexible curtain assembly (400) is 200-300mm, and the spacing between the flexible curtain panels (410) is the distance between them at the conveyor belt surface.

4. The apparatus of claim 1, wherein: The micro-positive pressure mechanism (500) includes: An air dryer (510) has an air inlet channel (520) for outputting dry air, the air inlet channel (520) being disposed above the heat sealing station (300); A pressure sensor (530) is used to monitor the pressure inside the chamber (100) in real time and output a pressure feedback signal; A PID controller is used to adjust the air intake flow of the air dryer (510) according to the pressure feedback signal to maintain a slight positive pressure of +5-10Pa in the chamber (100).

5. The apparatus of claim 3, wherein: The micro-positive pressure mechanism (500) also includes an exhaust pipe (540) and a humidity sensor (550). The exhaust pipe (540) is disposed on the side wall of the chamber (100), and the humidity sensor (550) is used to detect the humidity of the gas in the chamber (100) in real time.

6. The apparatus of claim 1, wherein: The filling station (200) is provided with a first nitrogen mechanism (210). The first nitrogen mechanism (210) is a ring structure, which is mounted on the filling station (200) and is higher than the packaging bag on the filling station (200). The bottom of the first nitrogen mechanism (210) is provided with a porous nitrogen distribution plate (211). The porous nitrogen distribution plate (211) is provided with a first air hole and a second air hole for introducing nitrogen into the opening of the packaging bag that is being fed.

7. The apparatus of claim 6, wherein: The first and second air holes are arranged in an alternating ring array, with the first air holes being horizontally positioned and the second air holes being inclined downwards and pointing towards the opening of the packaging bag.

8. The apparatus of claim 6, wherein: An oxygen concentration detector is installed in the chamber (100).

9. The apparatus of claim 1, wherein: The heat sealing station (300) is equipped with a second nitrogen gas mechanism (310), which is located on both sides of the heat sealing station (300) and includes: Nitrogen nozzles (311) are provided on both sides of the gap between the heat sealing knife (320) and the packaging bag on the heat sealing station (300), and are horizontally inclined downwards toward the gap between the heat sealing knife (320) and the packaging bag; The pulse controller turns on nitrogen 0.5-1 seconds before the heat sealing knife (320) is pressed down, and turns it off when the heat sealing knife (320) contacts the bag opening. Nitrogen is sprayed out from the nitrogen nozzle (311).

10. The apparatus of claim 9, wherein: The heat sealing station (300) is equipped with a pre-cooling device. The nitrogen gas is pre-cooled to 10-15°C by the pre-cooling device and then sprayed out through the nitrogen nozzle (311).

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