A pH stabilizing device for producing sodium bicarbonate injection

Abstract

The application discloses a pH value stabilizing device for producing sodium bicarbonate injection and relates to the technical field of related equipment for medicine production. The device comprises a water bucket, a refrigeration connecting pipe and a gas storage bucket. A group of water inlet pipes are fixedly connected to one side of the lower end of the water bucket, and a water pump is fixedly connected to the end of the water inlet pipes away from the water bucket. In the application, the refrigeration connecting pipe can be installed in the configuration and filling device. The refrigeration connecting pipe is provided with a water inlet connecting pipe, a water outlet connecting pipe and an air inlet connecting pipe. The water inlet connecting pipe and the water inlet pipe are detachably connected. The water outlet connecting pipe and the water outlet pipe are detachably connected. The air inlet connecting pipe and the air inlet pipe are detachably connected. The air outlet connecting pipe and the air outlet pipe are detachably connected. Through the detachable device, the pH value of the sodium bicarbonate injection can be stabilized, and the stabilizing device can be easily detached from the configuration and filling device, so that the configuration and filling device can be maintained and cleaned.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical production equipment technology, and in particular to a pH stabilizing device for producing sodium bicarbonate injection. Background Technology

[0002] During the preparation and filling of sodium bicarbonate injection, the sodium bicarbonate solution easily ionizes into HCO3- ions and Na+ ions. HCO3- ions further decompose to release CO2 gas and generate OH- ions, causing the pH value of the solution to rise. To reduce the forward progress of this equilibrium reaction, the water for injection in the preparation tank is usually cooled to below 30 degrees Celsius before the sodium bicarbonate raw material is added to the preparation tank. Low temperature can effectively reduce the decomposition of sodium bicarbonate. At the same time, a sufficient amount of CO2 gas is introduced through an aeration device and pipeline to keep the reaction in dynamic equilibrium, so that the sodium carbonate solution can be carbonized to regenerate sodium bicarbonate.

[0003] The existing sodium bicarbonate injection solution preparation and filling processes all have built-in cooling and gas-filling structures, which makes the original equipment more complex, increases the number of structures, increases the difficulty of maintenance, and makes it more difficult to clean and disinfect the equipment. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a pH stabilizing device for the production of sodium bicarbonate injection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pH stabilizing device for producing sodium bicarbonate injection solution, comprising a water tank, a refrigeration connecting pipe, and a gas storage tank. A set of water inlet pipes is fixedly connected to one side of the lower end of the water tank. A water pump is fixedly connected to the end of one set of water inlet pipes away from the water tank. Another set of water inlet pipes is fixedly connected to the end of the water pump away from the water tank. A refrigeration device is installed in the middle of the other set of water inlet pipes, and the other set of water inlet pipes passes through the heat-absorbing end of the refrigeration device. A water inlet connecting pipe is detachably connected to the end of the other set of water inlet pipes away from the refrigeration device. The water inlet connecting pipe is fixedly connected to the lower end of the refrigeration connecting pipe. An outlet pipe is fixedly connected to one side of the upper end of the water tank, and the outlet pipe is away from the water tank. One end is detachably connected to a water outlet pipe, which is fixedly connected to the upper end of a refrigeration pipe. Several first heat sinks are fixedly connected to the inner side of the refrigeration pipe, and the first heat sinks and the refrigeration pipe are both provided with communicating water tanks. Several air shrouds are provided inside the water tanks, and the air shrouds are all located in the water tanks between two adjacent groups of first heat sinks. Two adjacent groups of first heat sinks are connected by four sets of connectors, and the connectors are connected to the inside of the air shrouds. A venting pipe is fixedly connected to the inner side of each air shroud. Three one-way valves are provided in the middle of the venting pipe, and the venting pipe passes through the inner wall of the refrigeration pipe. A first pressure sensor and a temperature sensor are fixedly connected to the four quarter points on both sides of the refrigeration pipe, respectively.

[0006] As a further description of the above technical solution:

[0007] A heat-conducting pipe is fixedly connected to one side of the refrigeration device. The end of the heat-conducting pipe away from the refrigeration device extends through the side wall of the gas storage tank into the tank. A heat-conducting column is fixedly connected to the end of the heat-conducting pipe away from the refrigeration device, and several second heat sinks are fixedly connected to the surface of the heat-conducting column. An air inlet pipe is fixedly connected to one side of the upper end of the gas storage tank, and a blower is fixedly connected to one end of the air inlet pipe inside the tank. A first throttling valve is provided on the surface of the end of the air inlet pipe away from the gas storage tank. An air inlet connecting pipe is detachably connected to the end of the air inlet pipe away from the gas storage tank, and the air inlet connecting pipe is fixedly connected to the other side of the upper end of the refrigeration connecting pipe. A gas outlet pipe is fixedly connected to the middle of the gas storage tank. A second throttle valve is provided on the surface of the end of the gas outlet pipe away from the gas storage tank. A gas outlet connecting pipe is detachably connected to the end of the gas outlet pipe away from the gas storage tank. The gas outlet connecting pipe is located directly above the refrigeration connecting pipe. The refrigeration device transfers the generated heat to the second heat sink through the heat conduction pipe. The second heat sink heats the gas inside the gas storage tank, causing the carbon dioxide gas inside the gas storage tank to expand. The pressure inside the gas storage tank is greater than the pressure inside the gas cover, creating a pressure difference between the carbon dioxide inside the gas storage tank and the carbon dioxide inside the gas cover, causing the carbon dioxide inside the gas storage tank to flow into the gas cover more quickly.

[0008] As a further description of the above technical solution:

[0009] A water inlet pipe is fixedly connected to the upper end of the water bucket and is connected to the inside of the water bucket. A first solenoid valve is installed in the middle of the water inlet pipe. A drain pipe is installed on the lower end of the water bucket away from the water inlet pipe and is connected to the inside of the water bucket. A valve is installed in the middle of the drain pipe. Water is injected into the water bucket through the water inlet pipe and drained from the water bucket through the drain pipe. The first solenoid valve can open or close the water inlet pipe and drain the water from the water bucket through the drain pipe to prevent bacteria from growing in the water bucket after prolonged use.

[0010] As a further description of the above technical solution:

[0011] A first control panel is fixedly connected to one side of the water tank. The first control panel is electrically connected to a water pump, a cooling device, a first solenoid valve, and a temperature sensor. The first control panel can control the operation of the water pump, the cooling device, the first solenoid valve, and the temperature sensor. When the temperature sensor detects that the temperature of the injection solution is below 30 degrees Celsius, the first control panel will stop the water pump and the cooling device from working. When the temperature of the injection solution is about to exceed 30 degrees Celsius, the water pump will start working again, thereby saving costs.

[0012] As a further description of the above technical solution:

[0013] The upper end of the gas storage tank is fixedly connected to an inflation pipe, and the middle part of the inflation pipe is connected to the middle part of the gas storage tank. A second solenoid valve is installed in the middle of the inflation pipe. A second pressure sensor is installed at the bottom of the gas storage tank. A second control panel is fixedly installed on one side of the gas storage tank. The second control panel is electrically connected to a first throttle valve, a second throttle valve, a first pressure sensor, a second pressure sensor, a blower, and a second solenoid valve. Carbon dioxide is injected into the gas storage tank through the inflation pipe. The pressure inside the gas storage tank can be detected by the second pressure sensor. The more carbon dioxide, the greater the pressure. When the carbon dioxide reaches a specified amount, the second solenoid valve can close the inflation pipe channel. The blower can be started through the second control panel, so that the blower injects carbon dioxide into the injection liquid through the air inlet pipe and the air inlet connecting pipe, so that the reaction in the injection liquid is in dynamic equilibrium. The carbon dioxide can be heated by the second heat sink, so that the carbon dioxide expands, thus ensuring that the pressure inside the gas storage tank is always greater than the pressure inside the configuration and filling device during use.

[0014] The present invention has the following beneficial effects:

[0015] In this invention, a water pump first transports water from a water tank to a cooling connection pipe via an inlet pipe and an inlet connecting pipe. During transport, the water is cooled by a refrigeration device, thus lowering the water temperature and allowing it to be transported to a water tank inside the cooling connection pipe. The cooling connection pipe contains several first heat sinks, which increase the heat absorption capacity of the water in the tank, facilitating the cooling of the water for injection to below 30 degrees Celsius. A heat pipe conducts heat generated by the refrigeration device to second heat sinks, which then dissipate the heat to the gas storage tank, causing the carbon dioxide gas inside the tank to expand. A blower transports the gas inside the gas storage tank to a gas hood via an inlet pipe and an inlet connecting pipe. The expanding carbon dioxide gas increases the pressure inside the gas storage tank, facilitating the injection of gas into the gas hood. The high-pressure gas inside the gas hood passes through a one-way valve and enters the water for injection through a diffuser pipe, increasing the carbon dioxide concentration and maintaining the dynamic equilibrium of the reaction.

[0016] In this invention, a refrigeration connection pipe can be installed inside the preparation and filling device. The refrigeration connection pipe is equipped with a water inlet connection pipe, a water outlet connection pipe, and an air inlet connection pipe. The water inlet connection pipe is detachably connected to the water inlet pipe, the water outlet connection pipe is detachably connected to the water outlet pipe, the air inlet connection pipe is detachably connected to the air inlet pipe, and the air outlet connection pipe is detachably connected to the air outlet pipe. Through the detachable device, the pH value of sodium bicarbonate injection can be stabilized, and the stabilizing device can be easily removed from the preparation and filling device, which is convenient for maintenance and cleaning of the preparation and filling device. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a three-dimensional cross-sectional view of the connecting pipe of the present invention;

[0019] Figure 3 This is a three-dimensional cross-sectional view of the air hood of the present invention;

[0020] Figure 4 This is a three-dimensional cross-sectional view of the gas storage tank of the present invention.

[0021] Legend:

[0022] 1. Water tank; 2. First control panel; 3. Water inlet pipe; 4. First solenoid valve; 5. Drain pipe; 6. Valve; 7. Water inlet pipe; 8. Water pump; 9. Refrigeration unit; 10. Water inlet connection pipe; 11. Refrigeration connection pipe; 12. Water outlet pipe; 13. Water outlet connection pipe; 14. Gas storage tank; 15. Second control panel; 16. Inflation pipe; 17. Air inlet pipe; 18. First throttle valve; 19. Air inlet connection pipe; 20. Air outlet pipe; 21. Second throttle valve; 22. Air outlet connection pipe; 23. First pressure sensor; 24. Temperature sensor; 25. First heat sink; 26. Air cover; 27. Connector; 28. Ventilation pipe; 29. ​​One-way valve; 30. Heat conduction pipe; 31. Second heat sink; 32. Second pressure sensor; 33. Blower; 34. Second solenoid valve. Detailed Implementation

[0023] 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.

[0024] Reference Figure 1-4 An embodiment of the present invention provides a pH stabilizing device for producing sodium bicarbonate injection solution, comprising a water tank 1, a refrigeration connecting pipe 11, and a gas storage tank 14. A set of water inlet pipes 7 are fixedly connected to one side of the lower end of the water tank 1. A water pump 8 is fixedly connected to the end of one set of water inlet pipes 7 away from the water tank 1. Another set of water inlet pipes 7 is fixedly connected to the end of the water pump 8 away from the water tank 1. A refrigeration device 9 is arranged in the middle of the other set of water inlet pipes 7, and the other set of water inlet pipes 7 passes through the heat absorption end of the refrigeration device 9. A water inlet connecting pipe 10 is detachably connected to the end of the other set of water inlet pipes 7 away from the refrigeration device 9. The water inlet connecting pipe 10 is fixedly connected to the lower end of the refrigeration connecting pipe 11. A water outlet pipe 12 is fixedly connected to one side of the upper end of the water tank 1. A water outlet connection pipe 12 is detachably connected to the end of the water outlet pipe 12 away from the water tank 1. Pipe 13, the water outlet connection pipe 13 is fixedly connected to the upper end of the refrigeration connection pipe 11. Several first heat sinks 25 are fixedly connected to the inner side of the refrigeration connection pipe 11. The first heat sinks 25 and the refrigeration connection pipe 11 are both provided with communicating water tanks. Several air hoods 26 are provided inside the water tanks. The air hoods 26 are all located in the water tanks between two adjacent groups of first heat sinks 25. Two adjacent groups of first heat sinks 25 are connected by four sets of connectors 27. The connectors 27 and the air hoods 26 are connected. A venting pipe 28 is fixedly connected to the inner side of each air hood 26. Three sets of one-way valves 29 are provided in the middle of the venting pipe 28. The venting pipe 28 passes through the inner wall of the refrigeration connection pipe 11. A first pressure sensor 23 and a temperature sensor 24 are fixedly connected to the four quarter points on both sides of the refrigeration connection pipe 11, respectively.

[0025] A water inlet pipe 3 is fixedly connected to the upper end of a water bucket 1, and the water inlet pipe 3 is connected to the interior of the water bucket 1. A first solenoid valve 4 is installed in the middle of the water inlet pipe 3. A drain pipe 5 is installed on the lower end of the water bucket 1 away from the water inlet pipe 7, and the drain pipe 5 is connected to the interior of the water bucket 1. A valve 6 is installed in the middle of the drain pipe 5. Water is injected into the water bucket 1 through the water inlet pipe 3, and water is discharged from the water bucket 1 through the drain pipe 5. The first solenoid valve 4 can open or close the passage of the water inlet pipe 3, and the drain pipe 5 can release the water inside the water bucket 1 to prevent bacteria from growing in the water inside the water bucket 1 due to prolonged use. A first control panel 2 is fixedly connected to one side surface of the water bucket 1. The first control panel 2 is electrically connected to a water pump 8, a refrigeration device 9, the first solenoid valve 4, and a temperature sensor 2. 4. The first control panel 2 can control the operation of the water pump 8, the cooling device 9, the first solenoid valve 4, and the temperature sensor 24. When the temperature sensor 24 detects that the temperature of the injection solution is below 30 degrees Celsius, the first control panel 2 will stop the operation of the water pump 8 and the cooling device 9. When the temperature of the injection solution is about to exceed 30 degrees Celsius, the water pump 8 will restart, thus saving costs. The upper end of the gas storage tank 14 is fixedly connected to the inflation pipe 16, and the middle of the inflation pipe 16 is connected to the middle of the gas storage tank 14. The middle of the inflation pipe 16 is provided with the second solenoid valve 34. The bottom of the gas storage tank 14 is provided with the second pressure sensor 32. The second control panel 15 is fixedly provided on one side of the gas storage tank 14. The second control panel 15 is electrically connected to the first throttle valve 18, the second solenoid valve 19, the first solenoid valve 10, the first solenoid valve 11, the first solenoid valve 12, the first solenoid valve 13, the first solenoid valve 14 ... The system consists of a two-stage throttle valve 21, a first pressure sensor 23, a second pressure sensor 32, a blower 33, and a second solenoid valve 34. Carbon dioxide is injected into the gas storage tank 14 through the inflation pipe 16. The second pressure sensor 32 detects the pressure inside the gas storage tank 14; the more carbon dioxide, the higher the pressure. When the carbon dioxide reaches a specified amount, the second solenoid valve 34 closes the inflation pipe 16. The blower 33 is then activated via the second control panel 15, injecting carbon dioxide into the injection solution through the air inlet pipe 17 and the air inlet connecting pipe 19, maintaining a dynamic equilibrium in the reaction within the injection solution. The second heat sink 31 heats the carbon dioxide, causing it to expand and thus increasing the pressure inside the gas storage tank 14. The pressure is always greater than that inside the configuration and filling device. A heat-conducting pipe 30 is fixedly connected to one side of the heat dissipation end of the refrigeration device 9. The end of the heat-conducting pipe 30 away from the refrigeration device 9 extends through the side wall of the gas storage tank 14 into the interior of the gas storage tank 14. A heat-conducting column is fixedly connected to the end of the heat-conducting pipe 30 away from the refrigeration device 9, and several second heat dissipation fins 31 are fixedly connected to the surface of the heat-conducting column. An air inlet pipe 17 is fixedly connected to one side of the upper end of the gas storage tank 14, and a blower 33 is fixedly connected to one end of the air inlet pipe 17 inside the gas storage tank 14. A first throttle valve 18 is provided on the surface of the end of the air inlet pipe 17 away from the gas storage tank 14. An air inlet connecting pipe 19 is detachably connected to the end of the air inlet pipe 17 away from the gas storage tank 14. The air inlet connecting pipe 19 is fixedly connected to the other side of the upper end of the refrigeration connecting pipe 11.A gas outlet pipe 20 is fixedly connected to the middle of the gas storage tank 14. A second throttle valve 21 is installed on the surface of the end of the gas outlet pipe 20 furthest from the gas storage tank 14. A gas outlet connecting pipe 22 is detachably connected to the other end of the gas outlet pipe 20 furthest from the gas storage tank 14. The gas outlet connecting pipe 22 is located directly above the refrigeration connecting pipe 11. The refrigeration device 9 transfers the generated heat to the second heat sink 31 through the heat pipe 30. The second heat sink 31 heats the gas inside the gas storage tank 14, causing the carbon dioxide gas inside the gas storage tank 14 to expand. The pressure inside the gas storage tank 14 is greater than the pressure inside the gas cover 26, creating a pressure difference between the carbon dioxide inside the gas storage tank 14 and the carbon dioxide inside the gas cover 26, causing the carbon dioxide inside the gas storage tank 14 to flow more quickly into the gas cover 26.

[0026] Working principle: In use, place the refrigeration connection pipe 11 inside the required configuration or filling device, place the air outlet connection pipe 22 at the upper end of the refrigeration connection pipe 11, and connect them together through the air inlet connection pipe 19 and the air inlet pipe 17. Connect the water outlet connection pipe 13 and the water outlet pipe 12 together, and connect the water inlet connection pipe 10 and the water inlet pipe 7 together. Inject water into the water tank 1 through the water injection pipe 3. After filling, close the first solenoid valve 4 through the first control panel 2, and inject carbon dioxide into the air storage tank 14 through the air inflation pipe 16. When the second pressure sensor 32 detects that the internal pressure of the air storage tank 14 has reached the set value, close the air inflation pipe 16 channel through the second solenoid valve 34. The water pump 8 transports the water in the water tank 1 through the water inlet pipe 7 and the water inlet connection pipe 10. During transportation, the water is cooled by the refrigeration device 9 inside the refrigeration connecting pipe 11, thus transporting the cool water to the water tank inside the refrigeration connecting pipe 11. The refrigeration connecting pipe 11 has several first heat sinks 25 built in, increasing the heat absorption capacity of the water in the tank and facilitating the cooling of the injection water to below 30 degrees Celsius. The cold water flows back to the water tank 1 from inside the refrigeration connecting pipe 11 through the outlet connecting pipe 13 and the outlet pipe 12, allowing the cool water to be recycled. When the temperature sensor 24 detects that the injection liquid temperature is below 30 degrees Celsius, the first control panel 2 will stop the water pump 8 and the refrigeration device 9. When the injection water temperature is about to exceed 30 degrees Celsius, the water pump 8 will restart, thus saving costs. The heat pipe 30 dissipates the heat generated by the refrigeration device 9. Heat is introduced into the second heat sink 31 and dissipated into the gas storage tank 14, causing the carbon dioxide gas inside the tank to expand. This opens the first throttle valve 18, and the blower 33 transports the gas from the storage tank 14 to the gas hood 26 via the inlet pipe 17 and inlet connecting pipe 19. The expanding carbon dioxide gas increases the pressure inside the storage tank 14, facilitating gas injection into the gas hood 26. The high-pressure gas inside the gas hood 26 passes through the one-way valve 29 and enters the injection water through the diffuser pipe 28, increasing the carbon dioxide concentration. The first pressure sensor 23 detects the pressure inside the filling or preparation device. When the pressure reaches the set value, the input of carbon dioxide to the refrigeration connecting pipe 11 stops; when the pressure is below the set value, the input continues. Carbon dioxide is injected into the filling or preparation device to maintain a dynamic equilibrium of the reaction. After filling or preparation is completed, the heat pipe 30 stops supplying heat to the second heat sink 31, the internal temperature and pressure of the gas storage tank 14 decrease, and the second throttle valve 21 is opened, allowing the remaining carbon dioxide in the preparation or filling device to enter the outlet pipe 20 through the outlet connection pipe 22, and then flow back into the gas storage tank 14, recovering the carbon dioxide and saving costs. Water inside the water tank 1 is drained through the drain pipe 5. The passage of the water injection pipe 3 can be opened or closed through the first solenoid valve 4, and the water inside the water tank 1 can be drained through the drain pipe 5 to prevent bacteria from growing in the water inside the water tank 1 due to prolonged use. The refrigeration connection pipe 11 can be installed inside the preparation and filling device.The refrigeration connection pipe 11 is equipped with a water inlet connection pipe 10, a water outlet connection pipe 13, and an air inlet connection pipe 19. The water inlet connection pipe 10 is detachably connected to the water inlet pipe 7, the water outlet connection pipe 13 is detachably connected to the water outlet pipe 12, the air inlet connection pipe 19 is detachably connected to the air inlet pipe 17, and the air outlet connection pipe 22 is detachably connected to the air outlet pipe 20. This detachable design not only stabilizes the pH value of the sodium bicarbonate injection solution but also allows the stabilizing device to be easily removed from the preparation and filling equipment, facilitating maintenance and cleaning of the preparation and filling equipment.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pH stabilizing device for producing sodium bicarbonate injection solution, comprising a water tank (1), a refrigeration connecting pipe (11), and a gas storage tank (14), characterized in that: A set of water inlet pipes (7) is fixedly connected to one side of the lower end of the water bucket (1). A water pump (8) is fixedly connected to one end of the water inlet pipes (7) away from the water bucket (1). Another set of water inlet pipes (7) is fixedly connected to one end of the water pump (8) away from the water bucket (1). A refrigeration device (9) is installed in the middle of the other set of water inlet pipes (7), and the other set of water inlet pipes (7) passes through the heat absorption end of the refrigeration device (9). A water inlet connecting pipe (10) is detachably connected to one end of the other set of water inlet pipes (7) away from the refrigeration device (9). The water inlet connecting pipe (10) is fixedly connected to the lower end of the refrigeration connecting pipe (11). A water outlet pipe (12) is fixedly connected to one side of the upper end of the water bucket (1). A water outlet connecting pipe (13) is detachably connected to one end of the water outlet pipe (12) away from the water bucket (1). The water outlet connecting pipe (13) is fixedly connected to the refrigeration connecting pipe (11). 11) At the upper end, a number of first heat sinks (25) are fixedly connected to the inner side of the cooling connecting pipe (11), and the first heat sinks (25) and the cooling connecting pipe (11) are both provided with interconnected water tanks. A number of air hoods (26) are provided inside the water tanks, and the air hoods (26) are all located in the water tanks between two adjacent groups of first heat sinks (25). Two adjacent groups of first heat sinks (25) are connected by four sets of connectors (27), and the connectors (27) and the air hoods (26) are connected inside. A venting pipe (28) is fixedly connected to the inner side of each air hood (26). Three sets of one-way valves (29) are provided in the middle of the venting pipe (28), and the venting pipe (28) passes through the inner wall of the cooling connecting pipe (11). A first pressure sensor (23) and a temperature sensor (24) are fixedly connected to the four points on both sides of the cooling connecting pipe (11). A heat pipe (30) is fixedly connected to one side of the cooling device (9). The end of the heat pipe (30) away from the cooling device (9) extends through the side wall of the gas storage tank (14) into the interior of the gas storage tank (14). A heat-conducting column is fixedly connected to the end of the heat pipe (30) away from the cooling device (9), and several second heat sinks (31) are fixedly connected to the surface of the heat-conducting column. An air inlet pipe (17) is fixedly connected to one side of the upper end of the gas storage tank (14), and a blower (33) is fixedly connected to one end of the air inlet pipe (17) inside the gas storage tank (14). The end of the air inlet pipe (17) away from the gas storage tank (14) A first throttle valve (18) is provided on the surface of the air inlet pipe (17). An air inlet connecting pipe (19) is detachably connected to the end of the air inlet pipe (17) away from the air storage tank (14). The air inlet connecting pipe (19) is fixedly connected to the other side of the upper end of the refrigeration connecting pipe (11). An air outlet pipe (20) is fixedly connected to the middle of the air storage tank (14). A second throttle valve (21) is provided on the surface of the end of the air outlet pipe (20) away from the air storage tank (14). An air outlet connecting pipe (22) is detachably connected to the end of the air outlet pipe (20) away from the air storage tank (14). The air outlet connecting pipe (22) is located directly above the refrigeration connecting pipe (11).

2. The pH stabilizing device for producing sodium bicarbonate injection solution according to claim 1, characterized in that: The upper end of the water bucket (1) is fixedly connected to a water injection pipe (3), and the water injection pipe (3) is connected to the inside of the water bucket (1). A first solenoid valve (4) is provided in the middle of the water injection pipe (3). A drain pipe (5) is provided on the lower end of the water bucket (1) away from the water inlet pipe (7). The drain pipe (5) is connected to the inside of the water bucket (1). A valve (6) is provided in the middle of the drain pipe (5).

3. The pH stabilizing device for producing sodium bicarbonate injection solution according to claim 2, characterized in that: The water tank (1) has a first control panel (2) fixedly connected to one side surface. The first control panel (2) is electrically connected to a water pump (8), a refrigeration device (9), a first solenoid valve (4), and a temperature sensor (24).

4. The pH stabilizing device for producing sodium bicarbonate injection solution according to claim 3, characterized in that: An inflation pipe (16) is fixedly connected to the upper end of the gas storage tank (14), and the middle part of the inflation pipe (16) is connected to the middle part of the gas storage tank (14). A second solenoid valve (34) is provided in the middle part of the inflation pipe (16). A second pressure sensor (32) is provided at the bottom of the inside of the gas storage tank (14). A second control panel (15) is fixedly provided on one side of the gas storage tank (14). The second control panel (15) is electrically connected to a first throttle valve (18), a second throttle valve (21), a first pressure sensor (23), a second pressure sensor (32), a blower (33), and a second solenoid valve (34).

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