Inert gas filling device and online detection method

Abstract

The invention discloses an inert gas filling device and an online detection method. The inert gas filling device comprises a plug adding rotary lifting mechanism, a gas filling mechanism and a plug sucking head, the plug adding rotating lifting mechanism is used for controlling lifting and rotating of the plug sucking head, the inflating mechanism is used for inflating inert gas into a container, and the plug sucking head is used for guiding the inert gas into the container from the inflating mechanism. According to the inert gas filling device, the inert gas can be smoothly guided into the container from the gas filling device in a sealed mode, the residual oxygen amount in the container filled with the inert gas filling device is monitored and adjusted in real time through an inert gas online detection method, and the higher quality requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of pharmaceutical packaging machinery, and in particular to an inert gas filling device and an online detection method. Background Art

[0002] In current industrial production, many products have strict requirements on oxygen content to ensure quality and stability. For example, sensitive products such as food, medicine, and chemicals need to control the oxygen concentration in the container during packaging to prevent oxidation, deterioration, or other adverse reactions. In order to meet these requirements, it is usually necessary to fill the container with inert gas (such as nitrogen) during the filling and stoppering process to replace the air in the container, thereby reducing the oxygen concentration.

[0003] The existing inert gas filling method usually uses a needle to fill before filling and when adding the stopper. However, this method has some limitations. First, since the density of inert gas is usually lower than that of air, the inert gas is easy to escape after filling, resulting in a decrease in the inert gas concentration inside the container. Second, this method does not have an online detection function for residual oxygen on the filling machine, so it is impossible to monitor and adjust the filling amount of inert gas in real time to ensure that the residual oxygen content of each bottle of product meets the standard.

[0004] In addition, since the container is completely exposed to the air before the stopper is added, this increases the chance of the product coming into contact with the air, thereby increasing the risk of oxygen contamination. For products with extremely high residual oxygen requirements, this traditional method cannot meet the needs well, and may cause batch problems when measuring after packaging, affecting product quality and production efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide an inert gas filling device and an online detection method thereof, so as to avoid contact between the product in the container and the air, increase the inert gas concentration in the container, realize real-time online monitoring and adjustment of the residual oxygen content, thereby optimizing production efficiency and cost control, and meeting the market demand for high-quality products.

[0006] In order to solve the above technical problems, the present invention provides an inert gas filling device, comprising a plugging rotating lifting mechanism, an inflation mechanism and a plug suction head;

[0007] One end of the suction plug head is located in the inflation mechanism and connected to the inflation mechanism, and the other end is connected to the plugging rotation and lifting mechanism;

[0008] The plugging rotation lifting mechanism is used to control the lifting and rotation of the suction plug head, the charging mechanism is used to charge the inert gas into the container, and the suction plug head is used to guide the inert gas from the charging mechanism into the container.

[0009] Furthermore, it also includes a compression spring; the compression spring is sleeved on the suction plug head, and one end of the compression spring is in contact with the upper end surface of the inflation mechanism.

[0010] Furthermore, it also includes a suction plug head lower pressure plate; the suction plug head lower pressure plate is provided with threaded holes around it, a through hole in the middle, and a thread on the lower end surface; the upper end surface of the suction plug head lower pressure plate is connected to the lower surface of the plugging rotating and lifting mechanism, and the lower end surface of the suction plug head lower pressure plate is connected to the other end of the compression spring through a thread.

[0011] Furthermore, the inflation mechanism includes a first air channel; the first air channel is a separate air passage, and the air outlet of the first air channel is located above the container opening.

[0012] Furthermore, the inflation mechanism also includes a second air duct and a third air duct; the second air duct is connected to the third air duct, and is the main air intake duct of the third air duct; the third air duct includes a plurality of rows of evenly arranged exhaust ports, which evenly divide the exhaust ports into an upper end and a lower end, the exhaust ports at the upper end are directed upward, and the exhaust ports at the lower end are directed downward.

[0013] An inert gas online detection method, based on a plugging device, a container transmission device, a container residual oxygen detection device, a discharging device, a sampling device, a waste rejection device and the inert gas filling device, comprises the following steps:

[0014] S1: The container transport device transports the filled container to the position of the inert gas filling device;

[0015] S2: filling the container with inert gas through the inert gas filling device and plugging it;

[0016] S3: Detecting the residual oxygen content of the container after the stoppering is completed;

[0017] S4: Processing the tested container and adjusting the flow rate and time of the inert gas filled by the filling mechanism.

[0018] Further, the step of filling the container with inert gas and plugging the container by the inert gas filling device comprises:

[0019] Rotary adsorption: the container is rotated to the plugging device through the plugging rotary lifting mechanism, and the plug suction head vacuum adsorbs the rubber plug;

[0020] Inflation and plugging: After the adsorption is completed, the plugging rotating lifting mechanism is lifted and lowered, and the suction plug head is rotated to the top of the container through the plugging rotating lifting mechanism. The inflation mechanism fills the upper part of the container and the inside of the container with inert gas and plugs it.

[0021] Furthermore, the detecting of residual oxygen content in the container after the stoppering is completed includes:

[0022] After the plugging is completed, the plugging rotating lifting mechanism descends, and the container is transferred to the container residual oxygen content detection device through the container transfer device, and the container residual oxygen content detection device performs residual oxygen content detection on the container.

[0023] Furthermore, the process of processing the tested container and adjusting the flow rate and time of the inert gas filled into the filling mechanism includes:

[0024] Container transfer: the container that has passed the residual oxygen content test is transferred to the discharging device through the container transfer device and proceeds to the next process; the container that has failed the residual oxygen content test is transferred to the waste rejection device;

[0025] Container sampling: when the qualified container passes through the discharging device to the next process, the container is sampled by the sampling device.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] The inert gas filling device proposed by the present invention sets one end of the suction plug head in the inflation mechanism to ensure that the opening part of the container is always covered by the inert gas, thereby effectively preventing the container from contacting with the air and reducing the adverse effects of oxygen on the product.

[0028] Furthermore, by utilizing the inert gas online detection method, the residual oxygen content in the container can be detected in real time, and the amount and time of the inert gas filled into the container can be adjusted in time according to the detection results, to ensure that the residual oxygen content of each bottle of product meets the standard and improve the overall quality and stability of the product; and samples are taken from products that pass the residual oxygen content test, and products that fail the residual oxygen content test are eliminated, thereby reducing losses caused by unqualified products.

[0029] The present invention significantly improves the protection effect of the product, enhances the reliability and efficiency of the production process, and reduces the product failure rate, thereby providing strong technical support for the production of high-quality and high-stability products. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a process diagram in one embodiment of the present invention;

[0031] Figure 2 is an exploded view of an inert gas filling device in one embodiment of the present invention;

[0032] Figure 3 is a top view of an inflation mechanism according to an embodiment of the present invention;

[0033] Figure 4It is an AA cross-sectional view of an inflation mechanism in one embodiment of the present invention;

[0034] Figure 5 FIG. 5 is a BB cross-sectional view of an inflation mechanism in one embodiment of the present invention.

[0035] Figure numbers: 1. Inert gas filling device; 101. Plug rotating and lifting mechanism; 102. Suction plug head lower pressure plate; 103. Compression spring; 104. Suction plug head; 105. Inflating mechanism; 10501. First air channel; 10502. Second air channel; 10503. Third air channel; 2. Plug device; 3. Container transmission device; 4. Container residual oxygen content detection device; 5. Discharging device; 6. Sampling device; 7. Waste rejection device. DETAILED DESCRIPTION

[0036] The following will be described in more detail with reference to a schematic diagram of an inert gas filling device and an online detection method of the present invention, wherein preferred embodiments of the present invention are shown, and it should be understood that those skilled in the art may modify the present invention described herein while still achieving the advantageous effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art, and not as a limitation of the present invention.

[0037] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in illustrating the purpose of the embodiments of the present invention.

[0038] like Figures 1 to 5 As shown, the embodiment of the present invention proposes an inert gas filling device 1 and an online detection method, wherein the inert gas filling device 1 can accurately control the filling of the inert gas, ensure that the inert gas is evenly distributed in the container, and effectively reduce the contact between the product and the air. At the same time, the online detection method can monitor the residual oxygen content in the container in real time and automatically adjust the filling amount of the inert gas to maintain the residual oxygen content within a set range.

[0039] In this embodiment, the inert gas filling device 1 includes a plugging rotation lifting mechanism 101, an air filling mechanism 105 and a plug suction head 104;

[0040] One end of the suction plug head 104 is located in the inflation mechanism 105 and connected to the inflation mechanism 105, and the other end is connected to the plugging rotation lifting mechanism 101;

[0041] The plugging rotating lifting mechanism 101 is used to control the lifting and rotation of the suction plug head 104 to ensure that the plug head can be accurately docked with the container mouth and installed; the inflation mechanism 105 is used to fill the container with inert gas to reduce the oxygen content in the container; the suction plug head 104 is used to guide the inert gas from the inflation mechanism 105 into the container, and can maintain good sealing performance to prevent leakage.

[0042] In a specific embodiment, the inert gas filling device 1 also includes a compression spring 103. The compression spring 103 is sleeved on the suction plug head 104, and one end of the compression spring 103 is in contact with the upper end surface of the inflation mechanism 105. Since the compression spring 103 has a certain elasticity and buffering effect, when the suction plug head 104 is docked with the container mouth, the compression spring 103 can adapt to the container mouth of different heights and angles, ensuring a good sealing connection between the suction plug head 104 and the container mouth. In addition, the compression spring 103 can also absorb and alleviate the vibration or impact caused by pressure changes during the inflation process, thereby protecting the inflation mechanism 105 and the suction plug head 104 from damage.

[0043] In addition, the inert gas filling device 1 also includes a suction plug head lower pressure plate 102. The suction plug head lower pressure plate 102 is provided with threaded holes around it, a through hole is provided in the middle, and a thread is provided on the lower end surface. The upper end surface of the suction plug head lower pressure plate 102 is in contact with the lower surface of the plugging rotating lifting mechanism 101, and the bolts are fixedly connected to the suction plug head lower pressure plate 102 and the plugging rotating lifting mechanism 101 through the threaded holes, and the lower end surface of the suction plug head lower pressure plate 102 is connected to the other end of the compression spring 103 through the thread.

[0044] In a preferred embodiment, Figure 3-Figure 5 As shown, the inflation mechanism 105 includes a first air channel 10501; the first air channel 10501 is a separate air passage, and the air outlet of the first air channel 10501 is located above the container mouth. The first air channel 10501 allows the inert gas to enter the container from above, which helps the inert gas to be evenly distributed in the space of the container, thereby more effectively replacing the air in the container.

[0045] The inflation mechanism 105 also includes a second airway 10502 and a third airway 10503. The second airway 10502 is connected to the third airway 10503 and is the main airway for the third airway 10503; the third airway 10503 includes multiple rows of evenly arranged exhaust ports, which evenly divide the exhaust ports into an upper end and a lower end, the exhaust ports at the upper end are directed upward, and the exhaust ports at the lower end are directed downward. The exhaust ports at the upper end enable the suction plug head 104 to replace the oxygen in the rubber plug after absorbing the rubber plug, and the exhaust ports at the lower end enable the interior of the inflation mechanism 105 to be filled with inert gas at all times, thereby preventing oxygen from entering.

[0046] An inert gas online detection method, based on a plugging device 2, a container transmission device 3, a container residual oxygen detection device 4, a discharging device 5, a sampling device 6, a waste rejection device 7 and the inert gas filling device 1, comprises the following steps:

[0047] S1: the container transport device 3 transports the filled container to the bottom of the inert gas filling device 1;

[0048] S2: filling the container with inert gas through the inert gas filling device 1 and plugging it;

[0049] S3: Detecting the residual oxygen content of the container after the stoppering is completed;

[0050] S4: Process the container after the test and adjust the flow rate and time of the inert gas filled by the filling mechanism 105.

[0051] Specifically, the step of filling the container with inert gas and plugging the container by the inert gas filling device 1 includes:

[0052] Rotational adsorption: the container is rotated to the plugging device 2 through the plugging rotary lifting mechanism 101, and the plug suction head 104 vacuum adsorbs the rubber plug;

[0053] Inflation and plugging, after the adsorption is completed, the plugging rotating lifting mechanism 101 is lifted and lowered, and the suction plug head 104 is rotated to the top of the container through the plugging rotating lifting mechanism 101, and the upper part of the container is contained in the inflation mechanism 105, and the inflation mechanism 105 fills the upper part of the container and the inside of the container with inert gas and plugs it.

[0054] The detecting of residual oxygen content in the container after the stoppering is completed comprises:

[0055] After the plugging is completed, the plugging rotating lifting mechanism 101 rises, and the container is transmitted to the container residual oxygen detection device 4 through the container transmission device 3. The container residual oxygen detection device 4 passes the optical signal through the upper part of the container filled with liquid, and judges the oxygen content in the container by the wavelength and frequency of the passed optical signal.

[0056] The processing of the tested container and adjusting the flow rate and time of the inert gas filled into the filling mechanism 105 include:

[0057] Container transfer: the container that passes the residual oxygen content test is transferred to the discharging device 5 through the container transfer device 3 and proceeds to the next process; the container that fails the residual oxygen content test is transferred to the waste rejection device 7;

[0058] Container sampling: when the qualified container passes through the discharging device 5 to the next process, the container is sampled by the sampling device 6.

[0059] The specific processing process includes: the container residual oxygen content detection device 4 feeds back the measured residual oxygen content in the container to the controller. If the oxygen content inside a container increases, the container residual oxygen content detection device 4 determines that the container is unqualified, and the unqualified container is transferred to the waste rejection device 7, and the inflation mechanism 105 increases the flow and pressure of the inert gas to continue to detect subsequent containers; if the oxygen content inside a container is within a preset range, the container is transported to the discharging device 5 and proceeds to the next process; the qualified container will be sampled in the process from the discharging device 5 to the next process, and the oxygen production instrument will be used to verify the oxygen content in the container, so as to further correct the container residual oxygen content detection device 4.

[0060] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An inert gas filling device, characterized in that: It includes a plugging rotating lifting mechanism, an inflation mechanism and a plug suction head; One end of the plug suction head is located in the inflation mechanism and connected to the inflation mechanism, and the other end is connected to the plugging rotation and lifting mechanism; The plugging rotation lifting mechanism is used to control the lifting and rotation of the suction plug head, the charging mechanism is used to charge the inert gas into the container, and the suction plug head is used to guide the inert gas from the charging mechanism into the container.

2. The inert gas filling device according to claim 1, characterized in that: It also includes a compression spring; the compression spring is sleeved on the suction plug head, and one end of the compression spring is in contact with the upper end surface of the inflation mechanism.

3. The inert gas filling device according to claim 2, characterized in that: It also includes a suction plug head lower pressure plate; the suction plug head lower pressure plate is provided with threaded holes around it, a through hole in the middle, and a thread on the lower end surface; the upper end surface of the suction plug head lower pressure plate is connected to the lower surface of the plugging rotating and lifting mechanism, and the lower end surface of the suction plug head lower pressure plate is connected to the other end of the compression spring through a thread.

4. The inert gas filling device according to claim 1, characterized in that: The inflation mechanism comprises a first air channel; the first air channel is a separate air passage, and the air outlet of the first air channel is located above the container opening.

5. The inert gas filling device according to claim 4, characterized in that: The inflation mechanism also includes a second air duct and a third air duct; the second air duct is connected to the third air duct and is the main air intake duct of the third air duct; the third air duct includes a plurality of rows of evenly arranged exhaust ports, which evenly divide the exhaust ports into an upper end and a lower end, the exhaust ports at the upper end are directed upward, and the exhaust ports at the lower end are directed downward.

6. An inert gas online detection method, characterized in that: Based on the plugging device, the container transmission device, the container residual oxygen detection device, the discharging device, the sampling device, the waste rejection device and the inert gas filling device according to any one of claims 1 to 5, the device comprises the following steps: S1: The container transport device transports the filled container to the position of the inert gas filling device; S2: filling the container with inert gas through the inert gas filling device and plugging it; S3: Detecting the residual oxygen content of the container after the stoppering is completed; S4: Processing the tested container and adjusting the flow rate and time of the inert gas filled by the filling mechanism.

7. The online detection method according to claim 6, characterized in that: The step of filling the container with inert gas by the inert gas filling device and plugging the container comprises: Rotary adsorption: the container is rotated to the plugging device through the plugging rotary lifting mechanism, and the plug suction head vacuum adsorbs the rubber plug; Inflation and plugging: After the adsorption is completed, the plugging rotating lifting mechanism is lifted and lowered, and the suction plug head is rotated to the top of the container through the plugging rotating lifting mechanism. The inflation mechanism fills the upper part of the container and the inside of the container with inert gas and plugs it.

8. The online detection method according to claim 6, characterized in that: The detecting of residual oxygen content in the container after the stoppering is completed comprises: After the plugging is completed, the plugging rotating lifting mechanism descends, and the container is transferred to the container residual oxygen content detection device through the container transfer device, and the container residual oxygen content detection device performs residual oxygen content detection on the container.

9. The online detection method according to claim 6, characterized in that: The step of processing the tested container and adjusting the flow rate and time of the inert gas filled into the filling mechanism comprises: Container transfer: the container that has passed the residual oxygen content test is transferred to the discharging device through the container transfer device and proceeds to the next process; the container that has failed the residual oxygen content test is transferred to the waste rejection device; Container sampling: when the qualified container passes through the discharging device to the next process, the container is sampled by the sampling device.

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