An autoclave overheat water recovery system

Abstract

The utility model discloses a kind of water bath sterilization cabinet overheated water recovery system, including water bath sterilization cabinet, pre-heater, water supply pipe and steam boiler, the drainage side of water bath sterilization cabinet is provided with the discharge pipe for discharging high-temperature purified water, and the heat source side import end of discharge pipe is communicated with pre-heater, one end of water supply pipe is communicated with the heated side import end of pre-heater, another end of water supply pipe is communicated with normal temperature tap water, by being provided with pre-heater, water supply pipe, water softener and steam boiler, when water bath sterilization cabinet discharges overheated pure water, it can be discharged into pre-heater by discharge pipe, subsequently, normal temperature tap water is introduced into pre-heater by water supply pipe, so that it exchanges heat with overheated pure water, this process can realize the recovery of overheated pure water heat, on the other hand, since purified water and tap water after heat exchange have certain temperature, steam boiler can reduce fuel consumption when heating water body, and then energy-saving purpose is achieved.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving and environmental protection technology, specifically to a hot water recovery system for a water bath sterilizer. Background Technology

[0002] In the production process of terminally sterilized pharmaceuticals, sterilization is necessary to ensure drug safety and stability after filling. Water bath sterilization is one of the most widely used sterilization processes in the industry. This process typically utilizes a water bath sterilizer, which involves introducing purified water at a stable temperature of 121°C into the sterilizer. The high temperature ensures thorough contact between the hot water and the pharmaceutical packaging, killing any microorganisms that may be present in the drug. A single sterilization process typically requires approximately 5 tons of hot water to meet the sterilization needs of large batches of pharmaceuticals. However, currently available water bath sterilization cabinets generally use a "direct discharge" method for the superheated water used for sterilization after the sterilization process, without any form of recycling. This existing technical solution has obvious defects: On the one hand, the hot water used for sterilization needs to be preheated to 121°C, which contains a lot of heat energy. Direct discharge will cause this heat energy to be completely lost, making it impossible to achieve heat recycling. This not only causes serious energy waste, but also increases the heating energy consumption when new purified water needs to be added later, which does not meet the energy-saving requirements of industrial production. On the other hand, the raw material for preparing superheated water is purified water, which requires multiple purification processes to obtain. Its preparation cost is relatively high. The direct discharge of about 5 tons of superheated water at a time means that a large amount of high-cost purified water is not fully utilized and is lost, which significantly increases the raw material cost of pharmaceutical production and is not conducive to enterprises controlling production costs and improving economic efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a superheated water recovery system for a water bath sterilizer, which aims to solve the problem that superheated pure water in existing water bath sterilizers cannot be effectively recovered and utilized after use.

[0004] This utility model is achieved through the following technical solution: A superheated water recovery system for a water bath sterilizer includes a water bath sterilizer, a preheater, a water supply pipe, and a steam boiler; The water bath sterilizer is equipped with a drain pipe on the drain side for discharging high-temperature purified water, and the drain pipe is connected to the heat source side inlet of the preheater. One end of the water supply pipe is connected to the heated side inlet of the preheater, and the other end of the water supply pipe is connected to ambient temperature tap water. The heat source side outlet of the preheater is equipped with a pipeline system, and the pipeline system is connected to the water inlet side of the steam boiler.

[0005] Furthermore, a water softener is installed on the inlet side of the water supply pipe, one end of the water supply pipe is connected to the outlet side of the water softener, and the inlet side of the water softener is connected to external ambient temperature tap water through a pipeline.

[0006] Furthermore, the pipeline system includes an inlet tank and a first drain pipe. The inlet tank has an outlet pipe on its drainage side, and one end of the outlet pipe is connected to the inlet side of the steam boiler. The first drain pipe is located at the heat source outlet end of the preheater and is connected to the inlet tank.

[0007] Furthermore, the preheater is provided with a second drain pipe at the outlet end on the heated side, and the second drain pipe is connected to the water inlet tank.

[0008] Furthermore, a first valve is provided on the drain side of the discharge pipe, and a second valve is provided on the outlet side of the water supply pipe.

[0009] Furthermore, a third valve is provided on the outlet side of the first drainage pipe, and a fifth valve is provided on the outlet side of the drainage pipe.

[0010] Furthermore, a fourth valve is installed on the outlet side of the second drainage pipe.

[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. This utility model discloses a superheated water recovery system for a water bath sterilizer. It includes a preheater, a water supply pipe, a water softener, and a steam boiler. When the water bath sterilizer discharges superheated pure water, it can be discharged into the preheater through the discharge pipe. Subsequently, ambient temperature tap water is introduced into the preheater through the water supply pipe, allowing it to exchange heat with the superheated pure water. This process enables the recovery of heat from the superheated pure water. Furthermore, the heat-exchanged tap water and purified water can be used as boiler water in the steam boiler for heating. Since the purified water and tap water themselves have a certain temperature after heat exchange, the steam boiler can reduce fuel consumption when heating the water, thereby achieving energy saving.

[0012] 2. This utility model discloses a superheated water recovery system for a water bath sterilizer. By using softened water and purified water in tandem, when the softened water and purified water flow into the preheater and steam boiler respectively, the high purity of the softened water and purified water can effectively prevent scale formation on the pipe walls or boiler due to water impurities when they exchange heat in the preheater and enter the steam boiler. This reduces the need for frequent equipment maintenance due to scale formation and effectively extends the service life of the equipment. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the superheated water recovery system of a water bath sterilizer according to the present invention.

[0014] The attached diagram shows the markings and corresponding component names: 1-Water bath sterilizer; 11-Discharge pipe; 2-Preheater; 21-First drain pipe; 22-Second drain pipe; 3-Water supply pipe; 31-Water softener; 4-Inlet water tank; 41-Outlet water pipe; 5-Steam boiler. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention.

[0017] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0018] Furthermore, for clarity and brevity, descriptions of well-known structures, functions, and configurations may have been omitted. Those skilled in the art will recognize that various changes and modifications can be made to the examples described herein without departing from the spirit and scope of this disclosure.

[0019] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0020] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0021] Example 1 like Figure 1As shown, this utility model discloses a superheated water recovery system for a water bath sterilizer, comprising a water bath sterilizer 1, a preheater 2, a water supply pipe 3, a water inlet tank 4, and a steam boiler 5. The water bath sterilizer 1 has a drain pipe 11 on its drain side, which is connected to the heat source inlet of the preheater 2. The water supply pipe 3 is connected to the heated inlet of the preheater 2. The preheater 2 has a first drain pipe 21 on its heat source outlet side, which is connected to the water inlet tank 4. The preheater 2 has a second drain pipe 22 on its heated outlet side, which is connected to the water inlet tank 4. The water inlet tank 4 has an outlet pipe 41 on its drain side, one end of which is connected to the water inlet of the steam boiler 5.

[0022] In existing technology, the main working principle of a water bath sterilizer 1 is to place the items to be sterilized inside the sterilizer and then seal it. During the sterilization process, hot water spraying is required. To ensure uniform and reliable thermal sterilization of the items inside the sealed chamber, purified water is used for spraying. Generally, the purified water needs to be heated and maintained at around 121°C to meet the sterilization requirements, and the spraying process needs to continue for at least 15 minutes. After the high-temperature purified water has been sprayed, it still retains its temperature and is therefore transported through the discharge pipe 11 to the preheater 2 for heat exchange.

[0023] During the heat exchange process, ambient temperature tap water (e.g., 20°C) is supplied to the inlet end of the preheater 2 via the water supply pipe 3. When the high temperature purified water (e.g., 121°C) and the ambient temperature tap water (e.g., 20°C) enter the preheater 2, heat exchange can take place. After the heat exchange, the temperature of the high temperature purified water (e.g., 121°C) drops to 50°C, and the temperature of the ambient temperature tap water (e.g., 20°C) rises to 40°C. This achieves the heat recovery of the high temperature purified water. Meanwhile, after heat exchange, tap water (40°C) and purified water (50°C) are discharged into the inlet tank 4 through the first drain pipe 21 and the second drain pipe 22. Then, the purified water and tap water in the inlet tank 4 enter the steam boiler 5 through the outlet pipe 41, thus filling the steam boiler 5 with water. Since the purified water and tap water themselves have a certain temperature after heat exchange, the steam boiler 5 can reduce fuel consumption when heating the water, thereby achieving energy saving. After the steam boiler 5 heats the water, the high-temperature industrial steam (e.g., 130°C) it generates can be used to provide the required heat, power, and process environment for subsequent production processes.

[0024] Specifically, such as Figure 1As shown, a water softener 31 is also installed on the inlet side of the water supply pipe 3. One end of the water supply pipe 3 is connected to the outlet side of the water softener 31, and the inlet side of the water softener 31 is connected to the external ambient temperature tap water through a pipeline.

[0025] In use, the water softener 31 softens untreated tap water at room temperature. Since untreated tap water contains minerals, scale can form on the walls of the heat exchanger and inside the steam boiler 5 when used for heat exchange or heating without treatment. This scale buildup reduces heat transfer efficiency, leading to a decline in the performance of the heat exchanger and steam boiler 5. By installing the water softener 31, the tap water is softened. The softened water then enters the preheater 2 through the water supply pipe 3 for heat exchange, and then enters the steam boiler 5 for heating. Compared to existing methods that use tap water for heat exchange or boiler heating, this solution uses purified water and softened water for heat exchange and heating. Because purified water has a higher purity than softened water, scale formation is less likely when the purified water and softened water enter the preheater 2 and steam boiler 5, thus extending the performance and lifespan of the preheater 2 and steam boiler 5.

[0026] Specifically, the steam boiler 5 is an industrial steam boiler 5, and the preheater 2 is a boiler inlet water preheater 2.

[0027] The core function of the industrial steam boiler 5 is to heat the water entering the boiler to above the boiling point, generating industrial steam with a certain pressure and temperature to provide power or heat energy for subsequent production processes. The core function of the boiler feedwater preheater 2 is to transfer the heat released by the heat source (such as waste hot water or high-temperature flue gas waste heat) through the metal heat exchange wall (with good thermal conductivity) of the preheater 2 to the softened water flowing on the other side. As the cold water continues to flow and the heat is continuously transferred, the temperature of the cold water gradually increases (usually from room temperature to 40-100℃, depending on the temperature of the heat source). Finally, the preheated water is transported to the industrial steam boiler 5 through pipelines to complete the preheating process.

[0028] Specifically, such as Figure 1As shown, valves for opening or closing the pipelines can be installed on the inlet or outlet sides of the discharge pipe 11, the first drain pipe 21, the second drain pipe 22, the water supply pipe 3, and the outlet pipe 41. Specifically, a first valve can be installed on the drain side of the discharge pipe 11, a second valve on the outlet side of the water supply pipe 3, a third valve on the outlet side of the first drain pipe 21, a fourth valve on the outlet side of the second drain pipe 22, and a fifth valve on the outlet side of the outlet pipe 41. This design facilitates the control of the flow of water in each pipeline through the valves, thereby meeting the pipeline control requirements during equipment operation, maintenance, and adjustment of operating conditions.

[0029] The above specific embodiments further illustrate the purpose, technical solution and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A superheated water recovery system for a water bath sterilizer, characterized in that, It includes a water bath sterilizer (1), a preheater (2), a water supply pipe (3), and a steam boiler (5); The water bath sterilizer (1) is provided with a drain pipe (11) for discharging high-temperature purified water on the drain side, and the drain pipe (11) is connected to the heat source side inlet of the preheater (2). One end of the water supply pipe (3) is connected to the heated side inlet of the preheater (2), and the other end of the water supply pipe (3) is connected to ambient temperature tap water. The heat source side outlet of the preheater (2) is provided with a pipeline system, and the pipeline system is connected to the water inlet side of the steam boiler (5).

2. The superheated water recovery system for a water bath sterilizer according to claim 1, characterized in that, A water softener (31) is provided on the inlet side of the water supply pipe (3). One end of the water supply pipe (3) is connected to the outlet side of the water softener (31). The inlet side of the water softener (31) is connected to the external ambient temperature tap water through a pipeline.

3. The superheated water recovery system for a water bath sterilizer according to claim 1, characterized in that, The pipeline system includes an inlet tank (4) and a first drain pipe (21). The inlet tank (4) has an outlet pipe (41) on its drain side, and one end of the outlet pipe (41) is connected to the inlet side of the steam boiler (5). The first drain pipe (21) is located at the heat source outlet end of the preheater (2) and is connected to the inlet tank (4).

4. The superheated water recovery system for a water bath sterilizer according to claim 3, characterized in that, The preheater (2) is provided with a second drain pipe (22) at the outlet end of the heated side, and the second drain pipe (22) is connected to the water inlet tank (4).

5. The superheated water recovery system for a water bath sterilizer according to claim 1, characterized in that, A first valve is provided on the drain side of the discharge pipe (11), and a second valve is provided on the outlet side of the water supply pipe (3).

6. The superheated water recovery system for a water bath sterilizer according to claim 3, characterized in that, A third valve is provided on the outlet side of the first drainage pipe (21), and a fifth valve is provided on the outlet side of the drainage pipe (41).

7. The superheated water recovery system for a water bath sterilizer according to claim 4, characterized in that, A fourth valve is provided on the outlet side of the second drainage pipe (22).

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