Medicament filling apparatus and method without contact with air

Abstract

This invention discloses a non-air-contact pharmaceutical filling device suitable for energy storage agent filling processes. The filling device includes an extraction system, a filling system, and a weighing system connected by a pipeline system. An airtight system for testing the airtightness of the filling and weighing systems is also connected to the pipeline system. The pharmaceutical containers to be filled are placed inside the weighing system. A control system is installed within the filling system, which coordinates with various valves to ensure the pharmaceutical agent does not come into contact with air during filling. An extraction-type pharmaceutical extraction method is used, with nitrogen purging to prevent air from entering the pharmaceutical agent. The control system controls a cylinder, which drives the extraction tube to reciprocate up and down, achieving extraction and stopping. The device has a high level of automation and meets the requirements for energy storage agent filling.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical filling technology, particularly to the field of energy storage pharmaceutical filling technology, specifically to a pharmaceutical filling device that does not come into contact with air and a filling method using the device. Background Technology

[0002] Energy storage refers to the process of storing energy from one period of time to another. It involves converting energy into a storable form so that it can be released again when needed to supply energy. The purpose of energy storage is to address the mismatch between energy supply and demand. This is especially important in the field of renewable energy, such as solar and wind power, where energy generation is intermittent and uncontrollable, making a continuous and stable supply impossible. Energy storage technology allows energy to be stored during peak periods or periods of availability and released when needed, thus providing a continuous and reliable energy supply.

[0003] Therefore, the filling technology for energy storage reagents holds a crucial position in energy storage technology. It's not just about energy loss; more importantly, the filling process requires extremely stringent control over the moisture content of the ambient air, necessitating an airtight filling system. However, existing reagent filling technologies lack sealing devices, making them unsuitable for energy storage reagent filling. In conclusion, a dedicated airtight reagent filling system for energy storage reagent filling technology needs to be designed. Summary of the Invention

[0004] The purpose of this invention is to provide a pharmaceutical filling device that does not come into contact with air and a method for filling pharmaceuticals using the device, in order to solve the problems mentioned in the background art, such as the lack of sealing devices in pharmaceutical filling, and the need to isolate the filling of special pharmaceuticals from air due to strict requirements on moisture in the air.

[0005] To achieve the above objectives, the present invention provides a pharmaceutical filling device that does not come into contact with air, comprising an extraction system, a filling system, and a weighing system connected by pipelines; the pipeline system is also connected to an airtight system for performing an airtightness test on the pharmaceutical container to be filled, and the pharmaceutical container to be filled is placed in the weighing system.

[0006] To elaborate further, the extraction system includes a nitrogen chamber, an extraction pipe, a cylinder, a first weighing instrument, an original reagent tank, and a conveyor belt. The first weighing instrument is placed inside the nitrogen chamber, and the original reagent tank is placed on the conveyor belt. The original reagent tank is transported to the first weighing instrument inside the nitrogen chamber via the conveyor belt. The cylinder, controlled by the control system, drives the extraction pipe downward to insert below the liquid surface of the original reagent tank, thus completing the extraction operation.

[0007] The filling system includes a filling machine, a control system installed in the filling machine, a chemical input pump, a chemical tank of the filling system, a chemical output pump, a nitrogen cylinder, and a filling outlet end connector. The control system is also electrically connected to the cylinder of the extraction system.

[0008] The front end of the chemical input pump is connected to the extraction pipe of the extraction system through a pipeline system, and the rear end is connected to the chemical tank of the filling system.

[0009] The front end of the pharmaceutical output pump is connected to the pharmaceutical tank of the filling system, and the rear end is connected to the pipeline system;

[0010] The filling outlet end connector is located on the pipeline system;

[0011] The nitrogen cylinder outlet is divided into three paths through the pipeline system: one path leads to the nitrogen chamber, one path leads to the reagent tank in the filling system, and the other path leads to the filling outlet for filling the reagent tank in the filling system with nitrogen. All three paths are controlled by valves through the control system for on / off control and linkage.

[0012] The filling system's medicine tank is equipped with a first level gauge, a first pressure relief valve, a first pressure gauge, and a drain valve. The function of the first pressure relief valve is to balance the air pressure inside the medicine tank of the filling system.

[0013] The reagent tank is equipped with a second pressure relief valve to remove excess gas and ensure pure nitrogen purging. The tank is also equipped with a second level gauge and a fourth pressure gauge. A check valve is installed on the inlet pipe of the tank. This check valve opens when the pipeline system is connected and closes when the system is disconnected. One end of the pipe is connected to the check valve, and the end of the pipe has a quick-connect fitting, which can be connected to an airtight connector or a filling outlet connector as needed.

[0014] The filling system has an internal vacuum pump with a control valve and a second pressure gauge at the rear end, which is ultimately connected to the filling outlet to evacuate the medicine tanks of the filling system.

[0015] The nitrogen cylinder is equipped with a first filter to remove oil and water, ensuring the purity of the nitrogen that comes into contact with the reagent; the nitrogen cylinder is equipped with a nitrogen pressure gauge and a nitrogen cylinder switch valve.

[0016] A flow meter and a third pressure gauge are installed on the pipeline connecting the drug output pump and the filling outlet end connector to display the drug flow rate and pressure value in the pipeline.

[0017] The core component of the weighing system is the second weighing instrument. The medicine tank to be filled is placed on the second weighing instrument. The second weighing instrument is electrically connected to the control system. The weight of the medicine is set. When the second weighing instrument displays that the set value has been reached, the control system will stop the pump and stop filling the medicine.

[0018] The core component of the airtight system is the airtightness tester. The tester connects to the container to be filled via its interface to perform airtightness tests on the container, or it connects to the filling outlet connector to test the airtightness of the filling system. To prevent oil and water contaminants from entering the medication, the back end of the airtightness tester is connected to a second filter.

[0019] The method for filling the medicine using the above-mentioned filling equipment is as follows:

[0020] Before filling, check the overall pipeline connections, the performance of the air conditioning units, the condition of the valves, the condition of the filters, etc.

[0021] Connect the airtightness tester interface to the end connector of the filling system and tighten to seal.

[0022] Set the air tightness tester to maintain air tightness for 1 minute, pressurize for 1 minute, and test for 1 minute. If the pressure difference is not greater than 100Pa, the air tightness test is qualified. The air tightness test is completed. Defective products are disposed of separately.

[0023] Manually press the nitrogen filling button, the valve at the top of the nitrogen chamber will open, and nitrogen filling will begin in the nitrogen chamber;

[0024] Place the original reagent canister onto the conveyor belt, press the feed button, the door opens, and it is conveyed to the nitrogen chamber via the conveyor belt. The original reagent canister enters the weighing instrument inside the nitrogen chamber, and the nitrogen chamber door closes.

[0025] When the liquid extraction button of the control system is pressed, the cylinder opens and pushes the extraction tube downward to insert it below the liquid level of the original medicine tank. The valve opens and the liquid extraction begins.

[0026] Set the empty value of the original medicine container on the first weighing instrument. When the weight is lower than the empty value, the cylinder retracts, the extraction tube is pulled out, the door opens, and the empty original medicine container is sent out through the conveyor belt. The full original medicine container is then placed back on the conveyor belt, and the feed button is pressed.

[0027] The original reagent tank delivers the reagent into the reagent tank of the filling system through a reagent input pump and valve opening; the reagent tank of the filling system is continuously filled with nitrogen to isolate air; the reagent tank of the filling system is equipped with a first pressure relief valve to balance the air pressure inside the tank;

[0028] When the liquid level in the medicine tank of the filling system reaches the set value, the first liquid level gauge sends a signal to trigger the medicine input pump and valve to stop / start.

[0029] Connect the air tightness tester interface to the medicine container to be filled, and test the air tightness of the medicine container by opening and closing the one-way valve. After the air tightness test of the medicine container is completed, disconnect the air tightness tester tubing and insert the inlet tubing of the medicine container into the end connector of the filling outlet to connect the filling tubing.

[0030] The medicine container to be filled is placed on the second weighing instrument, which is set to the filling weight.

[0031] The filling system logic is activated, the vacuum pump and valves are opened, the filling system's medicine tanks are evacuated, and the vacuum level is set.

[0032] Once the vacuum level reaches the set value, the equipment valves automatically switch, the vacuum pump stops, the valve closes, the nitrogen cylinder valve opens, and nitrogen is injected into the reagent tank to be filled. The injection stops when the nitrogen pressure reaches the set range.

[0033] The equipment automatically switches to the gas phase detection chamber to measure the water content in ppm. If the equipment passes the test, it proceeds to the next step. If it fails, an alarm is triggered, and the first filter of the equipment is checked before the bottling process restarts.

[0034] After the aqueous phase of the equipment is qualified, the tank for the reagent to be filled is evacuated.

[0035] The filling of the medicine tank begins, the medicine output pump and the front and rear valves are opened, and the medicine tank is filled with medicine. When the weight reaches the set value, the pump is stopped and the filling ends.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] This energy storage drug filling equipment adopts a suction-type drug extraction method, with nitrogen purging protection to prevent air from mixing into the drug. The control system controls the cylinder, which drives the extraction tube to move up and down reciprocally to achieve drug extraction and stopping. It has a high level of automation and further improves production capacity.

[0038] The inlet of the reagent tank is equipped with a one-way valve, allowing for opening upon insertion and closing upon removal. During filling, a second pressure relief valve on the reagent tank releases excess gas. Both the original reagent tank and the reagent tank to be filled are equipped with a weighing instrument. The weighing instrument is linked to a control system that controls the start and stop of various pumps in the pipeline system, ensuring accurate filling and preventing air from entering. Filters are installed to prevent the reagent from contacting oil, water, or impurities; a vacuum pump is also used to perform a vacuum process in the system, ensuring that the reagent is not exposed to air during filling, thus extending the reagent's lifespan and meeting the requirements for energy storage reagent filling. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the device structure of the present invention;

[0040] Figure 2 This is a flowchart of the canning process of the present invention.

[0041] In the diagram: 1. Nitrogen chamber; 2. Extraction pipe; 3. Cylinder; 4. First weighing instrument; 5. Original reagent tank; 6. Piping system; 7. Conveyor belt; 8. Control system; 9. Reagent input pump; 10. Reagent tank of filling system; 11. Drain valve; 12. Reagent output pump; 13. Vacuum pump; 14. Control valve; 15. Second pressure gauge; 16. Nitrogen cylinder; 17. First filter; 18. First level gauge; 19. First pressure relief valve; 20. Flow meter; 21. Terminal connector; 22. Check valve; 23. Reagent tank to be filled; 24. Air tightness tester; 25. Second filter; 26. Second weighing instrument; 27. Filling machine; 28. First pressure gauge; 29. ​​Third pressure gauge; 30. Second pressure relief valve; 31. Fourth pressure gauge; 32. Second level gauge. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figures 1-2 The present invention provides a technical solution: a pharmaceutical filling device that does not come into contact with air, including an extraction system, a filling system and a weighing system connected by a pipeline system 6; the pipeline system 6 is also connected to an airtight system for airtight testing of the pharmaceutical container 23 to be filled, and the pharmaceutical container 23 to be filled is placed in the weighing system.

[0044] The extraction system includes a nitrogen chamber 1, an extraction pipe 2, a cylinder 3, a first weighing instrument 4, an original reagent tank 5, and a conveyor belt 7. The first weighing instrument 4 is placed inside the nitrogen chamber 1, and the original reagent tank 5 is placed on the conveyor belt 7. The original reagent tank 5 is transported to the first weighing instrument 4 inside the nitrogen chamber 1 via the conveyor belt 7. The cylinder 3 is controlled by the control system 8, which drives the extraction pipe 2 to be inserted downward below the liquid surface of the original reagent tank 5 to complete the extraction work.

[0045] The filling system includes a filling machine 27, a control system 8 installed in the filling machine 27, a chemical input pump 9, a chemical tank 10 of the filling system, a chemical output pump 12, a nitrogen cylinder 16, and a filling outlet end connector 21. The control system 8 is also electrically connected to the cylinder 3 of the extraction system.

[0046] The front end of the chemical input pump 9 is connected to the extraction pipe 2 of the extraction system through the pipeline system 6, and the rear end is connected to the chemical tank 10 of the filling system.

[0047] The front end of the pharmaceutical output pump 12 is connected to the pharmaceutical tank 10 of the filling system, and the rear end is connected to the pipeline system 6.

[0048] The filling outlet end connector 21 is installed on the pipeline system 6;

[0049] The outlet of nitrogen cylinder 16 is divided into three paths through pipeline system 6: one path leads to nitrogen chamber 1, one path leads to the reagent tank 10 of the filling system, and the other path leads to the filling outlet for filling the reagent tank 10 of the filling system with nitrogen. All three paths are controlled by valves controlled by control system 8 for on / off control and linkage.

[0050] The filling system's medicine tank 10 is equipped with a first level gauge 18, a first pressure relief valve 19, a first pressure gauge 28, and a drain valve 11. The function of the first pressure relief valve is to balance the air pressure inside the medicine tank of the filling system.

[0051] A second pressure relief valve 30 is installed on the reagent tank 23 to remove excess gas and ensure pure nitrogen filling. The reagent tank 23 is also equipped with a second level gauge 32 and a fourth pressure gauge 31. A one-way valve 22 is installed on the inlet pipe of the reagent tank 23. The one-way valve 22 opens when the pipeline system is connected and closes when the pipeline system is disconnected.

[0052] The filling system has a vacuum pump 13 inside, and the rear end of the vacuum pump 13 has a control valve 14 and a second pressure gauge 15, which are finally connected to the filling outlet to evacuate the medicine tank 10 of the filling system.

[0053] The nitrogen cylinder 16 is equipped with a first filter 17 to remove oil and water, ensuring the purity of the nitrogen that comes into contact with the reagent; the nitrogen cylinder is equipped with a nitrogen pressure gauge and a nitrogen cylinder switch valve.

[0054] A flow meter 20 and a third pressure gauge 29 are installed on the pipeline connecting the drug output pump 12 and the filling outlet end connector 21 to display the drug flow rate and the pressure value in the pipeline of the drug output pump 12.

[0055] The core component of the weighing system is the second weighing instrument 26. The medicine tank 23 to be filled is placed on the second weighing instrument 26. The second weighing instrument 26 is electrically connected to the control system 8. The weight of the medicine is set. When the second weighing instrument 26 displays that the set value has been reached, the control system 8 stops the pump and stops filling the medicine.

[0056] The core component of the airtight system is the airtightness tester 24. The airtightness tester 24 is connected to the medicine container 23 to be filled via an airtightness tester interface for airtightness testing of the medicine container 23, or connected to the filling outlet connector 21 via the airtightness tester interface for airtightness testing of the filling system. To prevent oil and water impurities from contaminating the medicine, the rear end of the airtightness tester 24 is connected to the second filter 25.

[0057] The method for filling the medicine using the above-mentioned filling equipment is as follows:

[0058] Before filling, check the overall pipeline connections, the performance of the air conditioning units, the condition of the valves, the condition of the filters, etc.

[0059] Connect the airtightness tester 24 interface to the end connector 21 of the filling system and tighten to seal;

[0060] Set the air tightness tester to 24 air tightness, maintain air pressure for 1 minute, hold pressure for 1 minute, and test for 1 minute. If the pressure difference is not greater than 100Pa, the air tightness is qualified and the air tightness test is completed. Defective products should be disposed of separately.

[0061] Manually press the nitrogen filling button, the valve at the top of nitrogen chamber 1 will open, and nitrogen filling will begin in nitrogen chamber 1;

[0062] Place the original reagent canister 5 onto the conveyor belt 7, press the feed button, the door opens, and it is conveyed to the nitrogen chamber 1 via the conveyor belt 7. The original reagent canister 5 enters the weighing instrument 4 inside the nitrogen chamber 1, and the door of the nitrogen chamber 1 is closed.

[0063] When the liquid extraction button of the control system 8 is pressed, the cylinder 3 opens and pushes the extraction tube 2 downward to insert it below the liquid level of the original medicine tank 5. The valve opens and the liquid extraction begins.

[0064] Set the empty value of the original medicine tank 5 on the first weighing instrument 4. When the weight is lower than the empty value, the cylinder 3 retracts, the extraction tube 2 is pulled out, the door opens, and the empty original medicine tank 5 is sent out through the conveyor belt 7. The full original medicine tank 5 is put back on the conveyor belt 7 and the feeding button is pressed.

[0065] The original medicine tank 5 delivers the medicine into the medicine tank 10 of the filling system through the medicine input pump 9 and the valve opening; the medicine tank 10 of the filling system is continuously filled with nitrogen to isolate air; the medicine tank 10 of the filling system is equipped with a first pressure relief valve 19 to balance the air pressure inside the tank.

[0066] When the liquid level in the medicine tank 10 of the filling system reaches 80%, the first liquid level gauge 18 sends a signal, which triggers the medicine input pump 9 and valves to stop working. The liquid level alarm value can be adjusted and set as needed.

[0067] When the liquid level in the medicine tank 10 of the filling system is lower than 50%, the first liquid level gauge 18 sends a signal, which triggers the medicine input pump 9 and valves to start working. The liquid level alarm value can be adjusted and set according to needs.

[0068] Connect the air tightness tester 24 interface to the medicine container 23 to be filled, and test the air tightness of the medicine container 23 by opening and closing the one-way valve 22. After the air tightness test of the medicine container 23 is completed, disconnect the air tightness tester 24 pipeline and insert the inlet pipeline of the medicine container 23 into the canning outlet end connector 21 to connect the filling pipeline.

[0069] The medicine container 23 to be filled is placed on the second weighing instrument 26, which can be set to the filling weight.

[0070] The filling system logic is started, the vacuum pump 13 and valves are opened, and the medicine tank 10 of the filling system is evacuated. First, the vacuum is jogged for 5 seconds. After the pressure feedback is normal, the vacuum pump 13 is started. The vacuum degree of the chamber reaches -1kPa to 100kPa, which is an adjustable set value.

[0071] Once the vacuum level reaches the set value, the equipment valves automatically switch, the vacuum pump 13 stops pumping, the valve closes, the nitrogen cylinder valve opens, and nitrogen is injected into the unfilled reagent tank 23. The nitrogen injection pressure is adjustable from 30 kPa to 80 kPa, and the injection stops when the nitrogen pressure reaches the set range.

[0072] The equipment automatically switches to the gas phase detection chamber to measure the water content in ppm. The gas phase water content is required to be <100ppm and is adjustable. If the equipment passes the test, it will proceed to the next step. If it fails, an alarm will sound and the first filter 17 of the equipment will be checked before the filling process will restart.

[0073] After the aqueous phase of the equipment is qualified, the vacuum tank 23 of the reagent to be filled is evacuated, and the vacuum degree of the tank reaches -1kpa to -100kpa, which is an adjustable set value.

[0074] The filling of the medicine tank 23 begins, the medicine output pump 12 and the front and rear valves are opened, and the medicine tank 23 is filled with medicine. When the weight reaches the set value, the pump is stopped and the filling ends.

[0075] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A medicament filling apparatus without contact with air, characterized by: The system includes an extraction system, a filling system, and a weighing system connected by a pipeline system. The pipeline system also connects to an airtight system for testing the airtightness of the filling or weighing system. The container to be filled is placed inside the weighing system. The extraction system includes a nitrogen chamber, an extraction pipe, a cylinder, a first weighing instrument, the original container, and a conveyor belt. The first weighing instrument, extraction pipe, and cylinder are all placed inside the nitrogen chamber. The original container is placed on the conveyor belt and transported to the first weighing instrument inside the nitrogen chamber. The cylinder, controlled by the control system, drives the extraction pipe downwards to insert below the liquid level in the original container, completing the extraction process. The filling system includes a filling machine, a control system installed in the filling machine, a reagent input pump, a reagent tank of the filling system, a reagent output pump, a nitrogen cylinder, and a filling outlet end connector. The control system is also electrically connected to the cylinder of the extraction system. The front end of the chemical input pump is connected to the extraction pipe of the extraction system through a pipeline system, and the rear end is connected to the chemical tank of the filling system. The front end of the pharmaceutical output pump is connected to the pharmaceutical tank of the filling system, and the rear end is connected to the pipeline system; The filling outlet end connector is located on the pipeline system; The nitrogen cylinder outlet is divided into three paths through the pipeline system: one path leads to the nitrogen chamber, one path leads to the reagent tank in the filling system, and the other path leads to the filling outlet for filling the reagent tank with nitrogen. All three paths are controlled by valves through the control system for on / off control and linkage.

2. The non-contact air medicament filling device of claim 1, wherein: The filling system is equipped with a first level gauge, a first pressure relief valve, a first pressure gauge, and a drain valve on the medicine tank; a second pressure relief valve, a second level gauge, and a fourth pressure gauge are installed on the medicine tank to be filled; and a one-way valve is installed on the inlet pipe of the medicine tank to be filled.

3. The air-free pharmaceutical filling equipment according to claim 2, characterized in that: The filling system has a vacuum pump inside, and the rear end of the vacuum pump has a control valve and a second pressure gauge, which are finally connected to the filling outlet to evacuate the medicine tank of the filling system.

4. The air-free pharmaceutical filling equipment according to claim 3, characterized in that: A first filter is installed on the nitrogen cylinder.

5. The air-free pharmaceutical filling equipment according to claim 1, characterized in that: A flow meter and a third pressure gauge are installed on the pipeline connecting the drug output pump and the filling outlet end connector.

6. The non-contact air medicament filling device of claim 4, wherein: The core component of the weighing system is the second weighing instrument. The medicine container to be filled is placed on the second weighing instrument. The second weighing instrument is electrically connected to the control system. The weight of the medicine is set. When the second weighing instrument displays that the set value has been reached, the control system will stop the pump and stop filling the medicine.

7. A non-contact air medicament filling device according to claim 6, characterized in that: The core component of the airtight system is an airtightness tester. The airtightness tester is connected to the medicine tank to be filled through an airtightness tester interface for airtightness testing of the medicine tank to be filled, or connected to the filling outlet end connector through the airtightness tester interface for airtightness testing of the filling system; the rear end of the airtightness tester is connected to the second filter.

8. A method of filling a medicament using the filling apparatus of claim 7, characterized in that, Includes the following steps: Before filling, check the overall pipeline connections, valve status, and the status of the first and second filters. Connect the airtightness tester interface to the filling outlet end connector of the filling system and tighten to seal. Set the air tightness tester to maintain air tightness for 1 minute, pressurize for 1 minute, and test for 1 minute. If the pressure difference is not greater than 100Pa, the air tightness is qualified and the air tightness test is completed. Any unqualified filling systems should be disposed of separately. Manually press the nitrogen filling button, the valve at the top of the nitrogen chamber will open, and nitrogen filling will begin in the nitrogen chamber; Place the original reagent canister onto the conveyor belt, press the feed button, the nitrogen chamber door opens, and the canister is conveyed into the nitrogen chamber via the conveyor belt. The original reagent canister enters the weighing instrument inside the nitrogen chamber, and the nitrogen chamber door closes. When the liquid extraction button of the control system is pressed, the cylinder opens and pushes the extraction tube downward to be inserted below the liquid level of the original medicine tank to start the liquid extraction. Set the empty value of the original medicine canister on the first weighing instrument. When the weight of the original medicine canister is lower than the empty value, the cylinder retracts, the extraction tube is pulled out, the nitrogen chamber door opens, and the empty original medicine canister is sent out through the conveyor belt. The full original medicine canister is then placed back on the conveyor belt, and the feed button is pressed. The original reagent tank is fed into the reagent tank of the filling system through the reagent input pump; the reagent tank of the filling system is continuously filled with nitrogen to isolate air; the reagent tank of the filling system is equipped with a first pressure relief valve to balance the air pressure inside the tank; When the liquid level in the medicine tank of the filling system reaches the set value, the first liquid level gauge sends a signal to stop the medicine input pump. Connect the air tightness tester interface to the medicine tank to be filled, and test the air tightness of the medicine tank by opening and closing the one-way valve. After the air tightness test of the medicine tank is completed, disconnect the air tightness tester pipeline and insert the inlet pipeline of the medicine tank to be filled into the filling outlet end connector to connect the filling system. The medicine container to be filled is placed on the second weighing instrument, which is set to the filling weight. The filling system logic is activated, the vacuum pump and its control valve are opened, the filling system's medicine tank is evacuated, and the vacuum level is set. Once the vacuum level reaches the set value, the equipment valves automatically switch, the vacuum pump stops, the vacuum pump control valve closes, the nitrogen cylinder valve opens, and nitrogen is injected into the reagent tank to be filled. The injection stops when the nitrogen pressure reaches the set range. The equipment automatically switches to the gas phase detection chamber to measure the water content in ppm. If the equipment passes the test, it proceeds to the next step. If it fails, an alarm is triggered, and the equipment's first filter is checked before refilling begins. After the water content of the equipment is qualified, the tank for filling the agent is evacuated. The filling of the medicine tank begins, the medicine output pump is turned on, and the medicine tank is filled with medicine. When the weight of the medicine tank reaches the set value, the medicine output pump is stopped and the filling ends.

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