Powder-liquid double-chamber bag sterilizing and drying system

Abstract

The utility model relates to the technical field of medical product production, and discloses a powder-liquid double-chamber bag sterilizing and drying system which comprises a sterilizing and drying chamber, a fan, a circulating air pipe and an air-water separator, the sterilizing and drying chamber, the gas-water separator and the fan are communicated through circulating air pipes and form a circulating loop, the gas-water separator is arranged on the air outlet side of the sterilizing and drying chamber in the circulating loop, and the gas-water separator is used for separating and discharging moisture in clean air in the circulating loop. According to the utility model, the circulation loop of the clean air is constructed, the dehumidification equipment capable of removing moisture in the clean air is arranged in the loop, and the moisture in the drying chamber is continuously brought out by utilizing the continuously circulated clean air, so that the drying device has the advantages of high drying degree, short drying period, reduced production cost and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of medical product production, in particular to a powder-liquid double-chamber bag sterilization and drying system. Background Art

[0002] Due to the product characteristics of the powder-liquid double-chamber bag, its powder cavity needs to be kept dry before filling with powder during the production process. The current production method of the powder-liquid double-chamber bag is to add a drying process after the sterilization process is completed, that is, the sterilized product is dried in the sterilizer. The commonly used method is to introduce clean and dry compressed air into the chamber of the sterilization drying cabinet (device). When the airflow passes through the bag body, it takes away the wet air that passes through the film material and out of the powder cavity. At the same time, the air blowing equipment is used to realize the circulation of the air in the chamber of the sterilization drying cabinet (device), so as to replace the humid gas in the chamber of the sterilization drying cabinet (device), thereby ensuring the dryness of the gas in the sterilization drying cabinet (device) and achieving the purpose of drying the powder-liquid double-chamber bag.

[0003] The applicant has applied for a Chinese patent with authorization announcement number CN217817797U titled "A powder-liquid double-chamber bag drying device and its system" to address the technical problem that "the vortex fan forms circulating gas in the sterilization and drying cabinet (device), and the sterilization and drying cabinet (device) discharges humid gas while introducing clean and dry compressed air, resulting in incomplete replacement of humid gas in the sterilization and drying cabinet (device). The sterilization and drying cabinet (device) is provided with air supply ducts and exhaust ducts on both sides outside the sterilization and drying cabinet (device), so that the gas in the sterilization and drying cabinet (device) can flow evenly in one direction, thereby ensuring the uniformity of drying of the powder-liquid double-chamber bag products in the sterilization and drying cabinet (device), and can more thoroughly solve the problem of incomplete replacement of humid gas.

[0004] In the process of implementing the above-mentioned drying system, the applicant found that the degree of drying of the powder-liquid double-chamber bag product was limited by the humidity of the clean compressed air introduced, resulting in a limited range of dryness (the dryness can only reach a water content of 0.5 mg and above), making it difficult to adapt to the higher requirements of pharmaceutical drying production needs; and the above-mentioned drying system has the problems of long drying cycle, large amount of clean compressed air required, high energy consumption and high production cost, so it needs to be improved. Utility Model Content

[0005] In view of the problems existing in the prior art: the existing powder-liquid double-chamber bag sterilization and drying system has a certain humidity in the compressed air itself entering the sterilization and drying cabinet (device), which leads to the fact that the whole system cannot meet the higher requirements of pharmaceutical drying production for the drying degree of the powder cavity of the powder-liquid double-chamber bag product, and the drying cycle is long, the required amount of clean compressed air is large, and the production cost is high. The purpose of the utility model is to provide a powder-liquid double-chamber bag sterilization and drying system, which constructs a circulation loop of clean air in the sterilization and drying chamber, and arranges a dehumidification device capable of removing moisture from the clean air in the loop, and utilizes the continuously circulating clean air to continuously remove moisture from the dryer chamber to dry the powder cavity of the double-chamber bag, and has the advantages of high drying degree, short drying cycle, and reduced production cost.

[0006] In order to achieve the above object, the technical solution of the utility model is:

[0007] A powder-liquid double-chamber bag sterilization and drying system comprises a sterilization and drying chamber and a fan, wherein the fan delivers clean air into the sterilization and drying chamber. The powder-liquid double-chamber bag sterilization and drying system also comprises a circulating air duct and an air-water separator, wherein the sterilization and drying chamber, the air-water separator and the fan are all connected via the circulating air duct to form a circulating loop, wherein the air-water separator is arranged on the air outlet side of the sterilization and drying chamber in the circulating loop, and is used to separate and discharge moisture in the clean air in the circulating loop.

[0008] The utility model is further configured to include a heater, which is used to heat the clean air entering the sterilization and drying chamber.

[0009] The utility model is further configured as follows: the heater is arranged in the circulation loop at the air inlet side of the sterilization and drying chamber.

[0010] The utility model is further configured to include a cooler, wherein the cooler is arranged at the air outlet side of the sterilization and drying chamber in the circulation loop, and the cooler is used to cool the clean air discharged from the sterilization and drying chamber.

[0011] The utility model is further configured as follows: the cooler is arranged in the circulation loop between the sterilization and drying chamber and the gas-water separator.

[0012] The utility model is further configured as follows: a cooling medium circuit is arranged in the cooler, and the flow rate of the cooling medium in the cooling medium circuit can be adjusted.

[0013] The utility model is further configured to include an air supply pipe, which is connected to the circulating air duct and is used to supply clean compressed air to the circulating loop.

[0014] The utility model is further configured as follows: the connecting point between the air supply pipe and the circulating air pipe is located at the air outlet side of the air-water separator.

[0015] The utility model is further configured to include a heater for heating the clean air entering the sterilization and drying chamber. The heater is arranged on the air inlet side of the sterilization and drying chamber in the circulation loop, and the connection point between the air supply pipe and the circulating air pipe is located between the air-water separator and the heater.

[0016] The utility model is further configured as follows: the air volume of the fan can be adjusted.

[0017] In summary, the beneficial effects achieved by the present invention are as follows:

[0018] (1) The pipeline that the fan uses to deliver clean air into the sterilization and drying chamber in one direction is changed into a circulation loop, so that the clean air in the circulation loop can be recycled, which greatly reduces the amount of clean compressed air added from outside the system and effectively saves costs. The air-water separator can remove moisture from the clean air in the circulation loop, which not only ensures that the clean air discharged from the sterilization and drying chamber can be recycled, but also eliminates the influence of the humidity of the clean compressed air itself on the drying effect to a certain extent, thereby improving the drying efficiency, shortening the drying cycle, shortening the equipment operation time and reducing energy consumption, especially improving the drying effect, and being able to meet the higher requirements of drug drying production;

[0019] (2) The heater is arranged on the air inlet side of the sterilization and drying chamber to increase the temperature of the clean air entering the sterilization and drying chamber, which is beneficial to improving the drying efficiency;

[0020] (3) The cooler is arranged on the air outlet side of the sterilization and drying chamber and before the inlet of the air-water separator, and can cool the clean air with high humidity discharged from the sterilization and drying chamber, and can condense the water vapor in the clean air into water droplets, of which part of the condensed water is directly discharged from the outlet of the cooler, and the other part is discharged after being separated by the subsequent air-water separator, thereby achieving the effect of removing moisture from the clean air;

[0021] (4) The air supply pipe can add clean compressed air to the circulation loop when the system needs it, thereby eliminating the problem of air pressure drop caused by leakage in the circulation loop during long-term use and ensuring the pressure requirements of the production process. In addition, since the water content of the clean compressed air at room temperature in the air supply pipe is lower than that of the clean air in the circulation loop, the air supply pipe is located on the air outlet side of the air-water separator and before the heater, which can reduce the workload of the air-water separator and the cooler and further reduce energy consumption;

[0022] (5) By flexibly adjusting the flow rate of the cooling medium in the cooler, the air volume of the fan, and the drying time of the medicine, the degree of drying of the medicine can be controlled, thereby expanding the drying range of the medicine and meeting the drying requirements of different medicines. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the composition structure of the powder-liquid double-chamber bag sterilization and drying system of the utility model.

[0025] In the figure: 1. Sterilization and drying chamber; 2. Circulating air duct; 3. Cooler; 31. Cooling medium circuit; 32. Condensate pipe; 4. Air-water separator; 41. Drain pipe; 5. Fan; 6. Heater; 61. Heating medium circuit; 7. Duct nozzle; 8. Air supply pipe. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc. used in this specification indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application.

[0027] It should be noted that the embodiments of the present invention and the features involved in the embodiments can be combined with each other without conflict. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0028] As attached Figure 1 As shown, a powder-liquid double chamber bag sterilization and drying system includes a sterilization and drying chamber 1, a heater 6, a cooler 3, an air-water separator 4, a fan 5, and a circulating air duct 2 connecting the entire system. It is worth noting that the individual devices constituting the drying system in the utility model are all existing devices, so the detailed structure of each device will not be repeated.

[0029] The sterilization and drying chamber 1 contains medicines to be dried, and an air inlet and an air outlet connected to the circulating air duct 2 are respectively provided at both ends. The high-temperature dry clean air entering the sterilization and drying chamber 1 through the air inlet diffuses onto the medicines in the sterilization and drying chamber 1 through the air duct nozzle 7 connected to the circulating air duct 2, thereby drying the medicines. Under the action of air pressure, the high-temperature dry clean air entering the sterilization and drying chamber 1 takes away the moisture on the medicines and is converted into hot and humid clean air and discharged from the air outlet of the sterilization and drying chamber 1.

[0030] One or more cooling medium circuits 31 are provided inside the cooler 3, and a low-temperature cooling medium is continuously circulated in the cooling medium circuit 31. The cooling medium can be selected from a variety of substances, such as chilled water. After the hot and humid clean air enters the cooler 3 through the circulating air duct 2, it exchanges heat with the cooling medium in the cooling medium circuit 31. In the process of heat exchange and cooling, part of the water vapor in the hot and humid clean air condenses and liquefies, and the liquefied part of the condensed water is discharged from the condensed water pipe 32 connected to the cooler 3, and the remaining condensed water is mixed in the clean air in the form of droplets, thereby forming cold and humid clean air. The cold and humid clean air enters the air-water separator 4 through the circulating air duct 2.

[0031] After the cold wet clean air is separated by the air-water separator 4, the separated moisture is directly discharged from the drain pipe 41 at the bottom of the air-water separator 4, so that the cold wet clean air is converted into cold dry clean air, and finally the moisture in the clean air is removed.

[0032] The cold, dry and clean air formed by the air-water separator 4 enters the fan 5 through the circulating air duct 2 and is pressurized by the fan 5 so that the clean air in the entire circulation loop maintains a certain pressure and continuously circulates in a fixed flow direction.

[0033] The cold, dry, clean air passing through the fan 5 needs to enter the heater 6 for heat exchange before entering the sterilization and drying chamber 1, thereby being converted into high-temperature, dry, clean air, which can improve the drying efficiency of the medicine. The heater 6 is provided with one or more heating medium loops 61, and a heating medium is continuously circulated in the heating medium loop 61. The heating medium can be selected as hot water, heat-conducting oil or steam, etc., and an electric heating device can also be directly provided in the heater 6, and the heating medium and the electric heating device can heat the cold, dry, clean air separately or in combination.

[0034] The hot dry clean air formed by the heater 6 is converted into hot moist clean air in the sterilization and drying chamber 1 and circulates continuously in sequence.

[0035] Each device is connected by a circulating air duct 2, thus forming a complete circulation loop. The order of each device in the circulation loop is sterilization drying chamber 1, cooler 3, gas-water separator 4, fan 5, heater 6, sterilization drying chamber 1. Clean gas flows in and out of each device in the above order along the circulating air duct 2 and circulates continuously.

[0036] In the above circulation loop, the devices with dehumidification and drainage functions include the air-water separator 4 and the cooler 3, and the specific drainage pipes include the condensate pipe 32 and the drainage pipe 41. At the same time, the drying system in the utility model also includes an air supply pipe 8 for replenishing clean compressed air into the circulation loop.

[0037] The air supply pipe 8 is connected to the air source of clean compressed air. The clean compressed air in the air supply pipe 8 is at room temperature or low temperature, and its water content is lower than the water content of the clean air after passing through the air-water separator 4 in the circulation loop. Therefore, the connecting position of the air supply pipe 8 and the circulation loop is set on the air outlet side of the air-water separator 4 and before the fan 5, thereby reducing the workload of the air-water separator 4 and the cooler 3 and further reducing energy consumption.

[0038] A valve is provided on the air supply pipe 8 to control the opening and closing of the air supply pipe 8 and the circulating air duct 2. The valve is only opened when the drying system needs to supplement gas, thereby eliminating the problem of air pressure drop caused by leakage in the circulating loop during long-term use, and ensuring the pressure requirement in the circulating loop in the production process.

[0039] In particular, in the utility model, the flow rate of the cooling medium in the cooling medium circuit 31 can be adjusted, and the air volume of the fan 5 can be adjusted (by adjusting the frequency of the fan 5), so that the degree of drying of the medicine can be controlled by flexibly adjusting the flow rate of the cooling medium in the cooler 3, the air volume of the fan 5, and the time for drying the medicine, thereby expanding the drying range of the medicine and meeting the drying requirements of different medicines.

[0040] The implementation principle of the above embodiment is:

[0041] The powder-liquid double-chamber bag sterilization and drying system of the utility model uses clean air as the circulation medium, and the circulation loop constructed with the circulating air duct 2 as the connecting piece is provided with a sterilization and drying chamber 1, a cooler 3, an air-water separator 4, a fan 5 and a heater 6 in sequence. The fan 5 is used to send clean air into the sterilization and drying chamber 1 so that the clean air in the entire circulation loop is continuously circulated; the heater 6 is used to increase the temperature of the clean air entering the sterilization and drying chamber 1; the cooler 3 is used to cool the clean air discharged from the sterilization and drying chamber 1; the air-water separator 4 is used to separate and discharge the moisture in the clean air in the circulation loop. The utility model realizes the recycling of clean air, greatly reduces the use of clean compressed air, and effectively saves costs. The coordinated use of the cooler 3 and the air-water separator 4 can remove moisture from the clean air in the circulation loop, which not only ensures that the clean air discharged from the sterilization and drying chamber 1 can be put into circulation, but also eliminates the influence of the humidity of the clean air itself on the drying effect to a certain extent, thereby improving the drying efficiency, shortening the drying cycle, shortening the equipment operation time and reducing energy consumption, especially improving the drying effect (the water content of the drug after drying can reach 0.1 mg or less), so that the drying system can adapt to higher requirements for drug drying production needs.

[0042] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may 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. A powder-liquid double-chamber bag sterilization and drying system, comprising a sterilization and drying chamber (1) and a fan (5), wherein the fan (5) delivers clean air into the sterilization and drying chamber (1), characterized in that: The powder-liquid double-chamber bag sterilization and drying system also includes a circulating air duct (2) and an air-water separator (4); the sterilization and drying chamber (1), the air-water separator (4) and the fan (5) are all connected through the circulating air duct (2) to form a circulation loop; the air-water separator (4) is arranged on the air outlet side of the sterilization and drying chamber (1) in the circulation loop; and the air-water separator (4) is used to separate and discharge moisture from the clean air in the circulation loop.

2. The powder-liquid double-chamber bag sterilization and drying system according to claim 1 is characterized in that: It also comprises a heater (6), wherein the heater (6) is used to heat the clean air entering the sterilization and drying chamber (1).

3. The powder-liquid double-chamber bag sterilization and drying system according to claim 2 is characterized in that: The heater (6) is arranged in the circulation loop on the air inlet side of the sterilization and drying chamber (1).

4. The powder-liquid double-chamber bag sterilization and drying system according to claim 1, characterized in that: It also comprises a cooler (3), wherein the cooler (3) is arranged on the air outlet side of the sterilization and drying chamber (1) in the circulation loop, and the cooler (3) is used to cool the clean air discharged from the sterilization and drying chamber (1).

5. The powder-liquid double-chamber bag sterilization and drying system according to claim 4, characterized in that: The cooler (3) is arranged in the circulation loop between the sterilization and drying chamber (1) and the gas-water separator (4).

6. The powder-liquid double-chamber bag sterilization and drying system according to claim 4, characterized in that: The cooler (3) is provided with a cooling medium circuit (31), and the flow rate of the cooling medium in the cooling medium circuit (31) can be adjusted.

7. The powder-liquid double chamber bag sterilization and drying system according to claim 1, characterized in that: It also comprises an air supply pipe (8), wherein the air supply pipe (8) is connected to the circulating air pipe (2), and the air supply pipe (8) is used to supply clean compressed air to the circulating loop.

8. The powder-liquid double-chamber bag sterilization and drying system according to claim 7, characterized in that: The connecting point between the air supply pipe (8) and the circulating air pipe (2) is located on the air outlet side of the air-water separator (4).

9. The powder-liquid double-chamber bag sterilization and drying system according to claim 8, characterized in that: The invention also comprises a heater (6), wherein the heater (6) is used to heat the clean air entering the sterilization and drying chamber (1); the heater (6) is arranged on the air inlet side of the sterilization and drying chamber (1) in the circulation loop; and the connection point between the air supply pipe (8) and the circulating air pipe (2) is located between the air-water separator (4) and the heater (6).

10. The powder-liquid double chamber bag sterilization and drying system according to claim 1, characterized in that: The air volume of the fan (5) can be adjusted.

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