Gas control device for measuring infusion film

Abstract

The utility model relates to the technical field of infusion film measuring devices, in particular to a gas control device for measuring an infusion film. A base is arranged at the bottom of the protection cabinet, a partition plate is vertically arranged on the base, and an oxygen pipe and a nitrogen tank are arranged on the two sides of the partition plate respectively. A partition plate is arranged between the oxygen tank and the nitrogen tank; a control chamber is arranged at the top of the partition plate, and a proportioning valve is arranged in the control chamber and connected with a controller. The proportioning valve is connected with an oxygen tank and a nitrogen tank through a control valve I and a control valve II respectively; the gas pipeline is located on the outer side of the protection cabinet and comprises a multi-way valve; the controller is located on the outer side of the protection cabinet, controls the introduction proportion of the oxygen and the nitrogen through the proportioning valve, and controls the multi-way valve to be communicated with at most one gas pipeline for measuring parameters of the infusion film; by means of the protection cabinet, the gas pipeline, the measuring device and the controller, accurate measurement and control of parameters such as gas permeability, water vapor permeability and gas permeability of the infusion film are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of transfusion film measuring devices, in particular to a gas control device for transfusion film measuring. Background Art

[0002] In precision industries like medicine, pharmaceuticals, and packaging, infusion membranes are key materials. Performance testing, particularly the precise measurement of key parameters like gas permeability, water vapor permeability, and gas transmission rate, plays an irreplaceable role in ensuring product quality and safety. Given the industry's increasing demand for measurement accuracy, researchers in this field are committed to developing more advanced and efficient solutions.

[0003] While existing degassing conductivity measurement devices, such as those disclosed in Chinese patent CN218157675U, offer effective solutions for specific applications through the innovative combination of vacuum degassing and conductivity measurement, these devices primarily focus on degassing and conductivity measurement, leaving limitations in the refinement and convenience of controlling gas permeability in transfusion membranes. Specifically, existing transfusion membrane measurement devices generally face challenges in gas control, including insufficient precision control and relatively cumbersome operational procedures. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a gas control device for measuring an infusion membrane.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A gas control device for measuring transfusion membranes, comprising a protective cabinet, a gas pipeline, a measuring device and a controller, wherein:

[0007] The protective cabinet has a base at the bottom, a partition is vertically arranged on the base, and an oxygen tube and a nitrogen tank are respectively arranged on both sides of the partition; a partition is arranged between the oxygen tank and the nitrogen tank; a control room is arranged on the top of the partition, and a proportional control valve is arranged in the control room, and the proportional control valve is connected to the controller; the proportional control valve is connected to the oxygen tank and the nitrogen tank through control valve I and control valve II respectively;

[0008] The gas pipeline is located outside the protective cabinet and includes a multi-way valve; the inlet of the multi-way valve is connected to the proportional control valve, and the outlet of the multi-way valve is connected to the gas permeometer through switch valve I, the water vapor permeability tester through switch valve II, and the gas permeability tester through switch valve III; the gas permeometer, the water vapor permeability tester, and the gas permeability tester are respectively connected to the controller;

[0009] The controller is located outside the protective cabinet. It controls the ratio of oxygen and nitrogen through the proportional regulating valve, and controls the multi-way valve to connect at most one gas pipeline for measuring the parameters of the infusion membrane.

[0010] This technical solution utilizes a protective cabinet, gas pipelines, measurement equipment, and a controller to precisely measure and control parameters such as the gas permeability, water vapor permeability, and gas transmission rate of the infusion membrane, ensuring the safety of the experimental process and the accuracy of the data. Specifically, the protective cabinet design effectively isolates the gas source and measurement instruments, reducing the risk of gas leakage. Furthermore, the controller's precise control of gas flow and pressure also enhances experimental safety. The base provides a stable foundation, while the partition separates the different gas sources (oxygen and nitrogen tanks), ensuring physical isolation and preventing mixing or accidental leakage. The control chamber, located atop the partition, is the core control area of the device. The built-in proportional control valve is a key component for adjusting the gas mixing ratio. The multi-way valve, acting as the central gas distribution center, directs the mixed gas to different measurement instruments as needed. On-off valves control the opening and closing of each gas pipeline, achieving precise gas distribution. The controller uses the proportional control valve to precisely control the oxygen and nitrogen gas flow ratio to meet the gas mixture requirements under different experimental conditions. The proportional control valve adjusts the mixing ratio by changing the flow rates of the two gases. The multi-way valve directs the mixed gas to different measuring instruments (gas permeometer, water vapor permeability meter, gas permeability meter) according to the controller. The gas permeometer, water vapor permeability meter, and gas permeability meter each receive gas from the multi-way valve and perform corresponding measurements. The controller is used to precisely control the proportional control valve, multi-way valve, and on-off valve. It is also responsible for collecting and processing data from the measuring instruments.

[0011] In addition, the gas control device for measuring infusion membranes according to the present invention may also have the following additional technical features:

[0012] According to one embodiment of the present invention, the proportional regulating valve is a proportional pressure reducing valve, comprising a valve body and a piston. The valve body is provided with a piston, and the effective areas at both ends of the piston are in different proportions, constituting a pressure difference between the front and rear ends of the valve body, thereby reducing pressure.

[0013] This technical solution uses a proportional pressure reducing valve as a proportional regulating valve and utilizes the proportional difference in the effective area at both ends of the piston to achieve precise pressure reduction and regulation of the gas pressure to meet the different pressure requirements during the infusion membrane measurement process.

[0014] According to an embodiment of the present invention, the protective cabinet includes a cabinet door, and the cabinet door is provided with a transparent observation window, and the observation window faces the location of the control room.

[0015] This technical solution provides a cabinet door with a transparent observation window on the protective cabinet, allowing operators to intuitively monitor the operating conditions in the control room, thereby improving the convenience and safety of operations.

[0016] According to one embodiment of the present invention, the oxygen tank is further provided with a pressure sensor I, and the nitrogen tank is further provided with a pressure sensor II, and both the pressure sensor I and the pressure sensor II are connected to the controller.

[0017] This technical solution realizes real-time monitoring of gas storage pressure and ensures the stability of gas supply during the experiment by installing pressure sensors on the oxygen tank and nitrogen tank respectively and connecting the pressure sensors to the controller.

[0018] According to one embodiment of the present invention, the gas pipeline is fixed to a desktop or a wall in the laboratory through a fixing frame, and the gas permeability meter, the water vapor permeability meter and the gas transmission rate meter are placed at different positions on the desktop.

[0019] This technical solution uses a fixing bracket to firmly install the gas pipeline on the laboratory table or wall, and rationally arranges the positions of the gas permeometer, water vapor permeability meter, and gas transmission rate meter, thereby optimizing the experimental space layout and improving experimental efficiency.

[0020] According to one embodiment of the present invention, the parameters of the infusion membrane include gas permeability, water vapor permeability and gas transmission rate.

[0021] This technical solution provides a clear test target for the experiment by clearly pointing out that the main measurement parameters of the infusion membrane include gas permeability, water vapor permeability and gas transmission rate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) Accurately measure and control the gas permeability, water vapor permeability and gas transmission rate of the infusion membrane through protective cabinets, gas pipelines, measuring devices and controllers;

[0024] (2) The multi-way valve and the switch valve can easily adapt to different experimental needs and quickly switch the measuring instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the present utility model.

[0026] In the figure: 1. Protective cabinet; 2. Partition; 3. Oxygen tank; 31. Pressure sensor I; 32. Control valve I; 4. Nitrogen tank; 41. Pressure sensor II; 42. Control valve II; 5. Proportional control valve; 6. Multi-way valve; 61. On-off valve I; 62. On-off valve II; 63. On-off valve III; 7. Gas permeability meter; 8. Water vapor permeability meter; 9. Gas permeability meter; 10. Controller. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 1 As shown, this embodiment provides a gas control device for measuring transfusion membranes, including a protective cabinet 1, a gas pipeline, a measuring device and a controller 10, wherein:

[0030] The protective cabinet 1 has a base at the bottom, a partition 2 is vertically arranged on the base, and an oxygen tube and a nitrogen tank 4 are respectively arranged on both sides of the partition 2; a partition 2 is provided between the oxygen tank 3 and the nitrogen tank 4; a control room is provided on the top of the partition 2, and a proportional control valve 5 is provided in the control room, and the proportional control valve 5 is connected to the controller 10; the proportional control valve 5 is connected to the oxygen tank 3 and the nitrogen tank 4 through the control valve I 32 and the control valve II 42 respectively;

[0031] The gas pipeline is located outside the protective cabinet 1 and includes a multi-way valve 6; the inlet of the multi-way valve 6 is connected to the proportional control valve 5, and the outlet of the multi-way valve 6 is connected to the gas permeometer 7 through the switch valve I 61, the water vapor permeability meter 8 through the switch valve II 62, and the gas permeability meter 9 through the switch valve III 63; the gas permeometer 7, the water vapor permeability meter 8, and the gas permeability meter 9 are respectively connected to the controller 10;

[0032] The controller 10 is located outside the protective cabinet 1. It controls the ratio of oxygen and nitrogen through the proportional regulating valve 5 and controls the multi-way valve 6 to connect at most one gas pipeline for measuring the parameters of the infusion membrane.

[0033] This technical solution utilizes a protective cabinet 1, gas pipelines, measurement devices, and controller 10 to precisely measure and control parameters such as the gas permeability, water vapor permeability, and gas transmission rate of the infusion membrane, ensuring the safety of the experimental process and the accuracy of the data. Specifically, the design of the protective cabinet 1 effectively isolates the gas source and measurement instruments, reducing the risk of gas leakage. Furthermore, the controller 10's precise control of gas flow and pressure also enhances the safety of the experimental process. The base provides a stable foundation, while the partition 2 separates the different gas sources (oxygen tank 3 and nitrogen tank 4), ensuring physical isolation and preventing mixing or accidental leakage. The control chamber, located atop the partition 2, is the core control area of the device. The built-in proportional control valve 5 is a key component for adjusting the gas mixing ratio. The multi-way valve 6 serves as the gas distribution center, directing the mixed gas to different measurement instruments as needed. On-off valves control the opening and closing of each gas pipeline, achieving precise gas distribution. The controller 10 precisely controls the oxygen and nitrogen flow ratio through the proportional control valve 5 to meet the mixed gas requirements under different experimental conditions. The ratio control valve 5 adjusts the mixing ratio by changing the flow rates of the two gases. The multi-way valve 6 directs the mixed gas to different measuring instruments (gas permeometer 7, water vapor permeability meter 8, gas permeability meter 9) according to the controller 10. The gas permeometer 7, water vapor permeability meter 8, and gas permeability meter 9 respectively receive the gas from the multi-way valve 6 and perform corresponding measurements on it. The controller 10 is used to accurately control the ratio control valve 5, the multi-way valve 6, and the switch valve; it is also responsible for collecting and processing data from the measuring instruments.

[0034] In addition, the gas control device for measuring infusion membranes according to the present invention may also have the following additional technical features:

[0035] According to one embodiment of the present invention, the proportional regulating valve 5 is a proportional pressure reducing valve, comprising a valve body and a piston. The valve body is provided with a piston, and the effective areas at both ends of the piston are in different proportions, constituting a pressure difference between the front and rear ends of the valve body, thereby reducing pressure.

[0036] This technical solution uses a proportional pressure reducing valve as the proportional regulating valve 5 and utilizes the proportional difference in the effective area at both ends of the piston to achieve precise pressure reduction and regulation of the gas pressure to meet different pressure requirements during the infusion membrane measurement process.

[0037] According to an embodiment of the present invention, the protective cabinet 1 includes a cabinet door, and the cabinet door is provided with a transparent observation window, and the observation window faces the location of the control room.

[0038] This technical solution provides a cabinet door with a transparent observation window on the protective cabinet 1, so that the operator can intuitively monitor the operating conditions in the control room, thereby improving the convenience and safety of operation.

[0039] According to an embodiment of the present invention, the oxygen tank 3 is further provided with a pressure sensor I31 , and the nitrogen tank 4 is further provided with a pressure sensor II41 . Both the pressure sensor I31 and the pressure sensor II41 are connected to the controller 10 .

[0040] This technical solution realizes real-time monitoring of gas storage pressure by respectively arranging pressure sensors on the oxygen tank 3 and the nitrogen tank 4 and connecting the pressure sensors to the controller 10, thereby ensuring the stability of gas supply during the experiment.

[0041] According to one embodiment of the present invention, the gas pipelines are fixed to a table or a wall in the laboratory through fixing brackets, and the gas permeability meter 7, the water vapor permeability meter 8 and the gas permeability meter 9 are placed at different positions on the table.

[0042] This technical solution securely mounts the gas pipeline on a laboratory table or wall through a fixing bracket, and rationally arranges the positions of the gas permeometer 7, the water vapor permeability meter 8, and the gas permeability meter 9, thereby optimizing the experimental space layout and improving experimental efficiency.

[0043] According to one embodiment of the present invention, the parameters of the infusion membrane include gas permeability, water vapor permeability and gas transmission rate.

[0044] This technical solution provides a clear test target for the experiment by clearly pointing out that the main measurement parameters of the infusion membrane include gas permeability, water vapor permeability and gas transmission rate.

[0045] The use process of this utility model is:

[0046] like Figure 1 As shown, after starting the controller 10, the controller 10 first controls the gas introduction ratio of the oxygen tank 3 and the nitrogen tank 4 through the proportional control valve 5, and changes the pressure difference before and after the valve body by adjusting the difference in the effective area at both ends of the piston, thereby achieving precise control of the pressure reduction and mixing ratio; the mixed gas then enters the multi-way valve 6, and the multi-way valve 6 guides the gas to the designated measuring instrument (gas permeometer 7, water vapor permeability meter 8 or gas permeability meter 9); after receiving the gas, each measuring instrument performs a corresponding performance test and transmits the measurement results back to the controller 10 for processing; during this process, the pressure sensor monitors the storage pressure of the oxygen tank 3 and the nitrogen tank 4 in real time to ensure the stability of the gas supply; the operation status in the control room is intuitively monitored through the transparent observation window on the protective cabinet 1, which improves the convenience of operation; the gas pipeline is firmly installed through the fixing frame, and the measuring instruments are rationally arranged to ensure the efficient use of the experimental space; the device can achieve accurate measurement of the key parameters of the infusion membrane to meet the needs of experimental research.

[0047] Although the present invention has been described in detail with reference to the accompanying drawings and in conjunction with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, persons of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall be within the scope of the present invention. Any changes or substitutions that can be easily conceived by persons skilled in the art within the technical scope disclosed in the present invention shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A gas control device for measuring a liquid infusion membrane, characterized in that: The invention comprises a protective cabinet (1), a gas pipeline, a measuring device and a controller (10), wherein: A protective cabinet (1) is provided with a base at the bottom, a partition (2) is vertically provided on the base, and an oxygen tube and a nitrogen tank (4) are respectively provided on both sides of the partition (2); a partition (2) is provided between the oxygen tank (3) and the nitrogen tank (4); a control room is provided on the top of the partition (2), a proportional regulating valve (5) is provided in the control room, and the proportional regulating valve (5) is connected to a controller (10); the proportional regulating valve (5) is connected to the oxygen tank (3) and the nitrogen tank (4) through a control valve I (32) and a control valve II (42) respectively; The gas pipeline is located outside the protective cabinet (1) and includes a multi-way valve (6); the inlet of the multi-way valve (6) is connected to the proportional control valve (5); the outlet of the multi-way valve (6) is connected to the gas permeation meter (7) through the switch valve I (61), connected to the water vapor permeability meter (8) through the switch valve II (62), and connected to the gas permeability meter (9) through the switch valve III (63); the gas permeation meter (7), the water vapor permeability meter (8) and the gas permeability meter (9) are respectively connected to the controller (10); The controller (10) is located outside the protective cabinet (1), and controls the ratio of oxygen and nitrogen through the proportional regulating valve (5), and controls the multi-way valve (6) to connect at most one gas pipeline for measuring the parameters of the infusion membrane.

2. The gas control device for measuring a liquid infusion membrane according to claim 1, wherein: The proportional regulating valve (5) is a proportional pressure reducing valve, comprising a valve body and a piston. The valve body is provided with a piston, and the effective areas at both ends of the piston are in different proportions, forming a pressure difference between the front and rear of the valve body, thereby reducing pressure.

3. The gas control device for measuring a liquid infusion membrane according to claim 1, wherein: The protective cabinet (1) comprises a cabinet door, which is provided with a transparent observation window facing the location of the control room.

4. The gas control device for measuring a liquid infusion membrane according to claim 1, wherein: The oxygen tank (3) is further provided with a pressure sensor I (31), and the nitrogen tank (4) is further provided with a pressure sensor II (41). Both the pressure sensor I (31) and the pressure sensor II (41) are connected to the controller (10).

5. The gas control device for measuring a liquid infusion membrane according to claim 1, wherein: The gas pipelines are fixed to a table or a wall in the laboratory through a fixing frame, and the gas permeability meter (7), the water vapor permeability meter (8) and the gas transmission rate meter (9) are respectively placed at different positions on the table.

6. The gas control device for measuring a liquid infusion membrane according to claim 1, wherein: The parameters of the infusion membrane include gas permeability, water vapor permeability and gas transmission rate.

Images