Hydrogen peroxide sterilization device

Abstract

The utility model provides a hydrogen peroxide sterilization device, including with the discharge port of hydrogen peroxide preparation machine's intercommunication's sterilization tank, the inside rotation of sterilization tank is provided with the stirring subassembly, is provided with the heating piece of the electric connection with outside heating source in the sterilization tank of stirring subassembly outside side, stirring subassembly can agitate the liquid to be sterilized in the sterilization tank, cooperate heating piece and realize the heating sterilization of the liquid to be sterilized, the utility model discloses can realize the liquid in the sterilization tank fast efficient stirring operation through stirring subassembly, make it can fully contact with its inside heating piece fully, realize its efficient fast sterilization treatment, greatly promoted the effect and efficiency of sterilization, solved the problem that traditional sterilization tank only relied on heating rod and realizes the heating sterilization of the liquid to be sterilized and exists the low efficiency, the poor effect problem of effect.

Description

Technical Field

[0001] This utility model relates to the field of sterilization equipment technology, specifically to a hydrogen peroxide sterilization device. Background Technology

[0002] Hydrogen peroxide (HPO) is a highly effective disinfectant and oxidant widely used in pharmaceuticals, food, and chemicals. However, its preparation process (such as the anthraquinone method) is susceptible to contamination by impurities in raw materials and microorganisms adhering to the inner walls of equipment, potentially leading to microbial contamination in the finished product and affecting its safety for subsequent use. Therefore, hydrogen peroxide must undergo sterilization treatment after preparation to meet industry standards.

[0003] Currently, most hydrogen peroxide sterilization devices commonly used in the industry have a simple structure of "single tank + single heating rod". This results in uneven heating and low sterilization efficiency. This is because traditional devices only have one straight heating rod at the bottom or side of the sterilization tank. Hydrogen peroxide relies on natural convection to transfer heat. The temperature difference between the top and bottom and inside and outside the tank can reach 15-20℃. The temperature in the area near the heating rod is too high, which can easily cause the hydrogen peroxide to decompose. The temperature in the area away from the heating rod is insufficient to completely sterilize. The sterilization time is 1-2 hours, which is extremely inefficient. Utility Model Content

[0004] In view of this, the present invention provides a hydrogen peroxide sterilization device, which can achieve thorough and efficient sterilization of liquid in the sterilization tank by means of a stirring component and a heating element. It solves the problems of traditional devices that only have a straight rod heating rod at the bottom or side wall of the sterilization tank, where hydrogen peroxide relies on natural convection for heat transfer, and the temperature difference between the top and bottom and inside and outside of the tank can reach 15-20℃. The temperature in the area near the heating rod is too high, which can easily cause the hydrogen peroxide to decompose, while the temperature in the area away from the heating rod is insufficient to completely sterilize. The sterilization time is 1-2 hours, which is extremely inefficient.

[0005] To solve the above-mentioned technical problems, this utility model provides a hydrogen peroxide sterilization device, including a sterilization tank connected to the outlet of a hydrogen peroxide preparation machine. An agitator is rotatably installed inside the sterilization tank, and a heating element electrically connected to an external heating source is installed inside the sterilization tank outside the agitator. The agitator can agitate the liquid to be sterilized inside the sterilization tank, and together with the heating element, achieves heating and sterilization of the liquid. This utility model can achieve rapid and efficient agitation of the liquid inside the sterilization tank through the agitator, ensuring complete and sufficient contact with the internal heating element, achieving efficient and rapid sterilization, greatly improving the sterilization effect and efficiency, and solving the problem of low efficiency and poor effect of traditional sterilization tanks that rely solely on heating rods to heat and sterilize the liquid.

[0006] The stirring assembly includes a stirring rod rotatably disposed inside the sterilization tank. A spiral conveying blade is provided on the outer wall of the stirring rod located inside the sterilization tank. One end of the stirring rod passes through the end of the sterilization tank, and a driving component is provided at its end. This invention can rotate the stirring rod and its outer spiral conveying blade together by rotating the output shaft of the driving component, thereby realizing a rapid and efficient tumbling and conveying operation of the liquid to be sterilized in the sterilization tank, so that it can fully and efficiently contact the heating element.

[0007] The driving component is a servo motor, and the power is transmitted between the output shaft end of the servo motor and the stirring rod through a reducer.

[0008] A sealed bearing is installed at the junction of the stirring rod and the sterilization tank. This ensures efficient sealing of the contact area between the stirring rod and the sterilization tank while the stirring rod rotates, making it safer.

[0009] The heating element is a spiral heating rod, which facilitates contact sterilization of the liquid to be sterilized at various locations.

[0010] There are at least two spiral heating rods, which are evenly distributed inside the sterilization tank to improve sterilization efficiency.

[0011] The sterilization tank has discharge ports at both ends, which facilitates the efficient discharge of the sterilized liquid.

[0012] The sterilization tank has a feed inlet that is connected to the discharge outlet of the hydrogen peroxide preparation machine, which facilitates the feeding of objects to be sterilized.

[0013] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Solve the problems of uneven heating and low efficiency: This utility model can drive hydrogen peroxide to "axially convey and radially tumble" through spiral conveying blades. With the help of two or more evenly distributed spiral heating rods, the temperature difference inside the tank is ≤3℃, the heating uniformity reaches 98%, and the sterilization time is shortened from the traditional 1-2 hours to 30-40 minutes, greatly improving efficiency. At the same time, it avoids the decomposition of hydrogen peroxide caused by local high temperature.

[0014] 2. Solving the problems of poor sealing and safety hazards: This utility model can achieve zero leakage by using a sealed bearing at the joint between the stirring rod and the sterilization tank and a double-sided rubber sealing ring. The hydrogen peroxide leakage rate is 0, which completely eliminates the safety risk of corrosive liquid leakage and avoids grease contamination of hydrogen peroxide.

[0015] 3. Solve the problems of excessive discharge residue and troublesome cleaning: This utility model can set discharge ports at both ends of the sterilization tank, and with the axial conveying action of the spiral blades, the discharge residue is ≤0.5%, which is more than 80% less than the traditional single discharge port. The cleaning time is shortened from 30 minutes to 10 minutes, reducing maintenance costs.

[0016] 4. Solve the problems of poor adaptability and inability to produce continuously: The feed inlet of this utility model is directly connected to the discharge outlet of the hydrogen peroxide preparation machine, realizing continuous operation of "preparation-sterilization" without intermediate transfer, avoiding secondary pollution, greatly improving production efficiency, and adapting to the needs of large-scale production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the hydrogen peroxide sterilization device of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a top view of the hydrogen peroxide sterilization device of this utility model; Figure 4 This utility model Figure 3 Sectional view at point BB.

[0018] Explanation of reference numerals in the attached drawings: 100, sterilization tank; 110, discharge port; 120, feed port; 200, stirring assembly; 210, stirring rod; 220, spiral conveyor blade; 300, heating element; 310, spiral heating rod. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0020] like Figure 1-4As shown: This embodiment provides a hydrogen peroxide sterilization device, including a sterilization tank 100 connected to the outlet of a hydrogen peroxide generator. The sterilization tank 100 is made of 304 stainless steel and is integrally formed by die casting. The inner wall of the tank is mirror polished, which not only provides excellent resistance to hydrogen peroxide corrosion but also reduces liquid adsorption residue and prevents impurities from leaching out and contaminating the hydrogen peroxide. The top of the sterilization tank 100 has an inlet 120, which is sealed to the outlet of the hydrogen peroxide generator via a flange (the flange gasket is made of corrosion-resistant fluororubber), achieving seamless transfer of hydrogen peroxide from preparation to sterilization and avoiding secondary contamination. Each end of the sterilization tank 100 has a discharge port 110 at its bottom, and each discharge port 110 is connected in series with a stainless steel ball valve (Shanghai Liangong Q11). The valve (F-16P type) is made of 304 stainless steel, which is corrosion-resistant and flexible in opening and closing. The discharge design at both ends, combined with the conveying action of the agitator 200, can completely discharge the hydrogen peroxide inside the sterilization tank 100. The agitator 200 is rotatably installed inside the sterilization tank 100, located outside the agitator 200. The heating element 300 is electrically connected to an external heating source. The agitator 200 can agitate and tumble the liquid to be sterilized in the sterilization tank 100. Together with the heating element 300, it can achieve heating and sterilization of the liquid to be sterilized. A temperature sensor interface is fixed on the outer wall of the sterilization tank 100. A PT100 type platinum resistance temperature sensor (Beijing Kunlun Coast KL800 type) is installed in the interface to monitor the temperature of hydrogen peroxide in the tank in real time and ensure the sterilization temperature is stable. This invention enables rapid and efficient agitation of the liquid within the sterilization tank 100 via the agitation component 200, ensuring complete and thorough contact with the internal heating element 300. This achieves efficient and rapid sterilization, significantly improving the sterilization effect and efficiency. It solves the problem of low efficiency and poor effect in traditional sterilization tanks 100 that rely solely on heating rods for heating and sterilizing the liquid.

[0021] According to one embodiment of the present invention, such as Figure 1-4As shown, the stirring assembly 200 includes a stirring rod 210 rotatably disposed inside the sterilization tank 100. The rod is made of 45# steel with a hard chrome plating finish, achieving a hardness of HRC55 or higher, combining high strength and corrosion resistance. The stirring rod 210 horizontally passes through the end plates of both ends of the sterilization tank 100, and the joint with the end plates is sealed by a sealed bearing. Spiral conveying blades 220, made of 304 stainless steel, are installed on the outer wall of the stirring rod 210 inside the sterilization tank 100. These blades are fixedly connected to the stirring rod 210 via argon arc welding (the weld joint strength reaches over 90% of the base material strength). The pitch of the blades is designed according to the inner diameter of the sterilization tank 100 to ensure that the hydrogen peroxide is axially conveyed and radially tumbled during rotation, achieving a seamless flow of liquid within the tank. One end of the stirring rod 210 passes through the end of the sterilization tank 100, and a driving component is provided at its end. This utility model can rotate the stirring rod 210 and the spiral conveying blade 220 on its outer side by rotating the output shaft of the driving component, thereby realizing the rapid and efficient tumbling and conveying operation of the liquid to be sterilized in the sterilization tank 100, so that it can fully and efficiently contact the heating element 300.

[0022] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the driving component is a servo motor. The output shaft of the servo motor is connected to the stirring rod 210 via a reducer. The servo motor is a Panasonic A6 series MSME022G1U servo motor, which features precise speed adjustment and stable torque. It can adjust the stirring speed according to the viscosity of hydrogen peroxide to avoid excessive speed causing hydrogen peroxide to splash or decompose. The reducer is a Nantong Zhenkang RV063 planetary reducer with a reduction ratio of 1:50, which converts the high speed of the servo motor into the low speed required by the stirring rod 210, while increasing the output torque to ensure that the stirring rod 210 rotates stably under the resistance of hydrogen peroxide. Power transmission: The output shaft of the servo motor is connected to the input shaft of the reducer through a coupling. The output shaft of the reducer is connected to the extended end of the stirring rod 210 through a flat key. The transmission efficiency is over 95%, with no slippage.

[0023] A sealed bearing is installed at the junction of the stirring rod 210 and the sterilization tank 100. The sealed bearing is a Harbin Bearing 6205-2RS deep groove ball bearing. The inner ring is interference-fitted with the stirring rod 210, and the outer ring is interference-fitted with the through hole of the end plate of the sterilization tank 100. The bearing has a double-sided rubber seal ring inside, which effectively prevents hydrogen peroxide from entering the bearing and also prevents bearing grease leakage from contaminating the hydrogen peroxide. The seal life is over 8000 hours, with a leakage rate of 0%. This ensures efficient sealing at the contact point between the stirring rod 210 and the sterilization tank 100 while the stirring rod 210 rotates, making it safer.

[0024] According to another embodiment of the present invention, such as Figure 1 and Figure 3 As shown, the heating element 300 is a spiral heating rod 310, which facilitates contact sterilization of the liquid to be sterilized at various locations. There are at least two spiral heating rods 310, which are evenly distributed inside the sterilization tank 100 to improve sterilization efficiency. The spiral heating rods 310 are Yancheng Huabang Electric Heating SRY2-220 / 3 type stainless steel heating rods, made of 316L stainless steel (with better corrosion resistance than 304 stainless steel, and can withstand hydrogen peroxide corrosion for a long time). The heating rods are spiral-shaped to increase the contact area with hydrogen peroxide. Installation method: At least two spiral heating rods 310 are installed and evenly distributed and fixed to the inner wall of the sterilization tank 100 along the circumference (if two are installed, the included angle is 180°; if three are installed, the included angle is 120°), ensuring uniform heat distribution in all areas of the tank and no dead zones in heating.

[0025] According to another embodiment of the present invention, such as Figure 1 and Figure 4 As shown, the sterilization tank 100 has discharge ports 110 at both ends, which facilitate the efficient discharge of the sterilized liquid. The sterilization tank 100 has a feed port 120, which is connected to the discharge port of the hydrogen peroxide preparation machine, thus facilitating the feeding of the objects to be sterilized.

[0026] Working principle and usage of this utility model: First, it needs to be clarified that the sterilization device involved in this utility model is mainly used for contact sterilization of various liquids. This utility model takes the high-efficiency sterilization in the hydrogen peroxide production process as an example to explain its working principle and usage method in detail. The working principle is as follows: This invention achieves highly efficient sterilization of hydrogen peroxide through the synergistic effect of "stirring and tumbling + uniform heating + sealing and leak prevention + discharge from both ends". The specific working logic is as follows: Feeding connection: Connect the inlet 120 of the sterilization tank 100 to the outlet of the hydrogen peroxide preparation machine through a flange. Open the feed valve and the hydrogen peroxide enters the sterilization tank 100 under the conveying pressure of the preparation machine until it reaches the specified liquid level monitored by the temperature sensor (generally 80% of the tank capacity to avoid overflow during stirring). Heating start: Connect the external heating source of the spiral heating rod 310, set the sterilization temperature, the heating rod is powered on and heats up, and the heat is transferred to the surrounding hydrogen peroxide through the spiral surface; Stirring coordination: Start the servo motor, which drives the stirring rod 210 and the spiral conveying blade 220 to rotate through the reducer. The spiral conveying blade 220 pushes the hydrogen peroxide to be slowly conveyed along the axis of the stirring rod 210, while driving the liquid to roll radially, so that the hydrogen peroxide in the tank forms a compound motion of "axial flow + radial rolling", which makes all-round contact with the evenly distributed spiral heating rod 310, avoiding local temperature too high or too low. Temperature monitoring: The temperature sensor collects the temperature of hydrogen peroxide in the tank in real time. When the temperature reaches the set value, the external controller maintains the temperature stable (e.g., 80℃ for 30 minutes) to ensure that microorganisms are completely killed. Discharge operation: After sterilization, turn off the heating rod and servo motor, and at the same time open the discharge valves at both ends of the sterilization tank 100. The residual rotational inertia of the spiral conveyor blades 220 drives the hydrogen peroxide to flow to both ends. With the help of gravity, the hydrogen peroxide is quickly and completely discharged from the tank, with a residual amount of ≤0.5%. Cleaning preparation: After the material is discharged, close the discharge valve and introduce clean water through the inlet 120. Start the stirring rod 210 and the heating rod (set temperature 50℃) to clean the residual hydrogen peroxide in the tank. After cleaning, drain the clean water and prepare for the next sterilization operation.

[0027] The usage method is as follows: Equipment inspection: Before use, check the condition of each component - the sealed bearing has no signs of leakage, the spiral heating rod 310 has no deformation, the servo motor and reducer have no abnormal noise, the valves open and close flexibly, and the temperature sensor displays normally. Feeding operation: Connect the flange of the inlet 120 of the sterilization tank 100 to the outlet of the hydrogen peroxide preparation machine, tighten the flange bolts, open the feed valve and the outlet valve of the preparation machine, and hydrogen peroxide enters the sterilization tank 100. Observe the liquid level (which can be observed through the liquid level gauge on the tank wall). After the specified liquid level is reached, close the two valves. Sterilization parameter settings: The target temperature (e.g., 85℃) and heat preservation time (e.g., 30 minutes) of the spiral heating rod 310 can be set via an external controller, and the stirring speed of the servo motor can be set; Sterilization start: Press the start button, the spiral heating rod 310 is powered on and heated, the servo motor starts and drives the stirring rod 210 to rotate, observe the temperature sensor display value in real time, and after the temperature rises to the target value, the controller automatically enters the heat preservation stage; Sterilization monitoring: During the heat preservation period, regularly check the equipment status - no hydrogen peroxide leakage, no abnormal heating of motors and heating rods, and temperature fluctuations controlled within ±2℃; Discharge and cleaning: After the heat preservation time is over, the controller will automatically turn off the heating rod and servo motor. Manually open the discharge valves at both ends and close the discharge valves after the hydrogen peroxide is completely discharged. Introduce clean water (50% of the tank capacity) through the feed inlet 120, start the stirring rod 210 and the heating rod (temperature 50℃), and open the discharge valve to discharge the wastewater after cleaning for 10 minutes. Maintenance shutdown: After cleaning, disconnect the main power supply to the equipment, check the lubrication status of the sealed bearings (replenish with food-grade grease every 3 months), clean the scale on the surface of the heating rods (if present), and ensure the equipment can be used normally next time.

[0028] This invention can achieve thorough and efficient sterilization of the liquid in the sterilization tank 100 by using the stirring component 200 in conjunction with the heating element 300. It solves the problems of traditional devices that only have a straight rod heating rod at the bottom or side wall of the sterilization tank 100, where hydrogen peroxide relies on natural convection for heat transfer, resulting in a temperature difference of 15-20°C between the top and bottom and inside and outside of the tank. The temperature is too high in the area near the heating rod, which can easily cause the hydrogen peroxide to decompose, while the temperature in the area away from the heating rod is insufficient to completely sterilize the liquid. The sterilization time is 1-2 hours, which is extremely inefficient.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A hydrogen peroxide sterilization device, comprising a sterilization tank (100) connected to the outlet of a hydrogen peroxide preparation machine, characterized in that: The sterilization tank (100) is equipped with a stirring component (200) that rotates inside. The sterilization tank (100) located outside the stirring component (200) is equipped with a heating element (300) that is electrically connected to an external heating source. The stirring component (200) can stir the liquid to be sterilized in the sterilization tank (100) and, together with the heating element (300), achieve the heating and sterilization of the liquid to be sterilized.

2. The hydrogen peroxide sterilization device as described in claim 1, characterized in that: The stirring assembly (200) includes a stirring rod (210) rotatably disposed inside the sterilization tank (100). A spiral conveying blade (220) is provided on the outer wall of the stirring rod (210) located inside the sterilization tank (100). One end of the stirring rod (210) penetrates through the end of the sterilization tank (100), and a driving component is provided at its end.

3. The hydrogen peroxide sterilization device as described in claim 2, characterized in that: The driving component is a servo motor.

4. The hydrogen peroxide sterilization device as described in claim 2, characterized in that: A sealed bearing is provided at the junction of the stirring rod (210) and the sterilization tank (100).

5. The hydrogen peroxide sterilization device as described in claim 1, characterized in that: The heating element (300) is a spiral heating rod (310).

6. The hydrogen peroxide sterilization device as described in claim 5, characterized in that: There are at least two spiral heating rods (310), which are evenly distributed inside the sterilization tank (100).

7. The hydrogen peroxide sterilization device as described in claim 1, characterized in that: The sterilization tank (100) has discharge ports (110) at both ends.

8. The hydrogen peroxide sterilization device as described in claim 1, characterized in that: The sterilization tank (100) is provided with a feed inlet (120), which is connected to the discharge port of the hydrogen peroxide preparation machine.

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