CN216154184U - Sterilization system - Google Patents

Abstract

The utility model discloses a sterilization system, which belongs to the technical field of product sterilization and comprises a steam supply assembly, a steam source and a steam control assembly, wherein the steam supply assembly comprises a first pipeline and a first switch valve arranged on the first pipeline; the device comprises a stock solution storage device, a second pipeline and a second switch valve, wherein the second pipeline is communicated with the stock solution storage device, and the second switch valve is arranged on the second pipeline; the first pipeline and the second pipeline are respectively communicated with the mixing device, and the mixing device is used for mixing the steam transmitted by the first pipeline and the sterilization stock solution transmitted by the second pipeline; the sterilizing spray head is communicated with the mixing device through a third pipeline; and the drying assembly comprises a heater and a fourth pipeline, the heater is communicated with the gas source, one end of the fourth pipeline is communicated with the heater, and the other end of the fourth pipeline is used for conveying gas to the product. The sterilization system provided by the utility model has a high sterilization effect, and can reduce the residual quantity of the sterilization stock solution on the product.

Description

Sterilization system

Technical Field

The utility model relates to the technical field of product sterilization, in particular to a sterilization system.

Background

In the process of beverage production, hydrogen peroxide vapor is often used to sterilize the packaging material of the beverage so as to ensure the safe drinking of the beverage.

In the existing hydrogen peroxide vapor sterilization technology, the hydrogen peroxide vapor is generally formed by directly mixing clean vapor and hydrogen peroxide stock solution, for example, the hydrogen peroxide stock solution is sprayed into a container while introducing vapor, so that the hydrogen peroxide is vaporized by the vapor to form the hydrogen peroxide vapor. But because clean steam easily forms the comdenstion water, lead to mixing ratio control difficulty, it is poor to mix the effect, and then leads to hydrogen peroxide's concentration stability among the hydrogen peroxide steam relatively poor, influences bactericidal effect on the one hand, and hydrogen peroxide's residual amount is higher on the other hand package material.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sterilization system which has a high sterilization effect and can reduce the residual quantity of a sterilization stock solution on a product.

As the conception, the technical scheme adopted by the utility model is as follows:

a sterilization system comprising:

the steam supply assembly comprises a first pipeline and a first switch valve arranged on the first pipeline, and the first pipeline is communicated with a steam source;

the stock solution supply assembly comprises a stock solution storage device, a second pipeline and a second switch valve, wherein the second pipeline is communicated with the stock solution storage device, and the second switch valve is arranged on the second pipeline;

the mixing device is respectively communicated with the first pipeline and the second pipeline and is used for mixing the steam transmitted by the first pipeline and the sterilization stock solution transmitted by the second pipeline;

the sterilizing spray head is communicated with the mixing device through a third pipeline and is used for spraying the sterilizing steam on a product;

and the drying assembly comprises a heater and a fourth pipeline, the heater is communicated with the gas source and is used for heating gas flowing through, one end of the fourth pipeline is communicated with the heater, and the other end of the fourth pipeline is used for transmitting gas to the product so as to dry the product sprayed with the sterilizing steam.

Optionally, the stock solution supply assembly further includes a stock solution conveying device, the stock solution conveying device includes a stock solution tank, a fifth pipeline and a pressure conveying pipeline, one end of the fifth pipeline is communicated with the stock solution storage device, the other end of the fifth pipeline and the second pipeline are both communicated with the stock solution tank, one end of the pressure conveying pipeline is communicated with the stock solution tank, the other end of the pressure conveying pipeline is communicated with a compressed air source, and compressed air is input into the stock solution tank through the pressure conveying pipeline to drive the sterilization stock solution in the stock solution tank to enter the mixing device through the second pipeline.

Optionally, the raw liquid conveying device further includes a first pressure sensor, an exhaust pipe, and a first proportional control valve installed on the exhaust pipe, the first pressure sensor is configured to detect a pressure of the raw liquid tank, the exhaust pipe is communicated with the pressure conveying pipeline, and an opening degree of the first proportional control valve is determined according to a signal detected by the first pressure sensor.

Optionally, the raw liquid conveying device further comprises a silencer mounted at the tail end of the exhaust pipe.

Optionally, the sterilization device further comprises a first filtering device, wherein the first filtering device is communicated with the second pipeline and is used for filtering the sterilization stock solution in the second pipeline.

Optionally, the sterilization apparatus further comprises a cooling device, the cooling device comprises a cooling pipe and a heat exchanger, the heat exchanger is provided with a stock solution flow channel and a cooling flow channel, the second pipeline is communicated with the stock solution flow channel, the cooling pipe is communicated with the cooling flow channel and a cooling water source, and the sterilization stock solution in the stock solution flow channel and the cooling water in the cooling flow channel can exchange heat.

Optionally, the steam supply assembly further comprises a first flow sensor and a second proportional regulating valve installed on the first pipeline, the first flow sensor is used for detecting the flow rate of the steam in the first pipeline, and the opening degree of the second proportional regulating valve is determined according to a signal detected by the first flow sensor.

Optionally, the stock solution supply assembly further includes a second flow sensor and a third proportional control valve installed on the second pipeline, the second flow sensor is used for detecting the flow rate of the sterilization stock solution in the second pipeline, and the opening degree of the third proportional control valve is determined according to a signal detected by the second flow sensor.

Optionally, the drying assembly further includes a third flow sensor and a fourth proportional control valve installed on the fourth pipeline, the third flow sensor is configured to detect a pressure of gas in the fourth pipeline, and an opening degree of the fourth proportional control valve is determined according to a signal detected by the third flow sensor.

Optionally, the gas purifier further comprises a pre-filter and a sterilizing filter, which are respectively communicated with the fourth pipeline, and the pre-filter and the sterilizing filter are both used for filtering the gas in the fourth pipeline.

The sterilization system provided by the utility model at least has the following beneficial effects:

provide steam through first pipeline to mixing arrangement, provide the stoste of disinfecting to mixing arrangement through the second pipeline, steam and the stoste of disinfecting mix the back in mixing arrangement, spray on the product through the shower nozzle that disinfects, in order to realize disinfecting to the product, after disinfecting to the product, the heater passes through the fourth pipeline with the gas after the heating and transmits to the product on, in order to dry the product, in-process to the product stoving, remaining stoste of disinfecting on the product can be activated again, in order to disinfect once more to the product, can also make the stoste of disinfecting decompose, and then reduce the amount of residue of the stoste of disinfecting on the product, the bactericidal effect to the product has been improved, can also the amount of residue on the effective control product.

Drawings

Fig. 1 is a schematic structural diagram of a sterilization system according to an embodiment of the present invention.

In the figure:

11. a first pipeline; 12. a first on-off valve; 13. a first flow sensor; 14. a second proportional control valve; 15. a second pressure reducing valve; 16. a second pressure gauge; 17. a second pressure sensor; 18. a first automatic on-off valve; 19. a first trap; 110. a second trap;

21. a stock solution storage device; 22. a second pipeline; 23. a stock solution tank; 24. a fifth pipeline; 25. a pressure delivery line; 26. a first pressure sensor; 27. an exhaust pipe; 28. a first proportional regulating valve; 29. a muffler; 210. a second flow sensor; 211. a third proportional control valve; 212. a second manual switch valve; 213. a third pressure reducing valve; 214. a third pressure gauge; 215. a second automatic on-off valve; 216. a low level switch; 217. a stock solution pump; 218. a first check valve; 219. a liquid level sensor; 220. a third automatic on-off valve; 221. a third pressure sensor; 222. a second on-off valve; 223. a second one-way valve;

3. a mixing device;

4. a sterilization nozzle;

51. a heater; 52. a fourth pipeline; 53. a third flow sensor; 54. a fourth proportional control valve; 55. a first manual on-off valve; 56. a first pressure reducing valve; 57. a first pressure gauge; 58. a first automatic on-off valve; 59. a temperature sensor;

6. a first filtering device;

71. a cooling tube; 72. a heat exchanger; 73. a fifth automatic on-off valve; 74. a manual regulating valve;

8. a pre-filter; 9. a sterilizing filter;

10. a third pipeline; 20. drying the spray head; 100. a sterilization area; 200. and a drying area.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a sterilization system, can have higher bactericidal effect, and can reduce the residual amount of the stock solution that disinfects on the product. Wherein, the product can be a packaging material and other structures needing sterilization, and the sterilization stock solution can be hydrogen peroxide.

The sterilization system of the embodiment comprises a steam supply assembly, a stock solution supply assembly, a mixing device, a sterilization spray head and a drying assembly. As shown in fig. 1, the steam supply assembly includes a first pipeline 11 and a first switch valve 12 installed on the first pipeline 11, and one end of the first pipeline 11 is communicated with the steam source, so that the steam source can input steam into the first pipeline 11. The first on-off valve 12 is used to control the on-off of the first pipeline 11. For example, the first switching valve 12 may be a manual switching valve.

The raw liquid supply unit includes a raw liquid storage device 21, a second pipeline 22, and a second on-off valve 222. The stock solution storage device 21 is used for storing the sterilization stock solution, one end of the second pipeline 22 is communicated with the stock solution storage device 21 so as to obtain the sterilization stock solution from the stock solution storage device 21, and the second switch valve 222 is installed on the second pipeline 22 and controls the on-off of the second pipeline 22. For example, the second switching valve 222 may be an electric valve.

The other end of the first pipe 11 and the other end of the second pipe 22 are respectively communicated with the mixing device 3, so that the first pipe 11 delivers steam to the mixing device 3, and the second pipe 22 delivers the sterilization raw liquid to the mixing device 3. The mixing device 3 is used for mixing the steam transmitted by the first pipeline 11 and the sterilization raw liquid transmitted by the second pipeline 22, and the high-temperature steam can form sterilization steam after being fully contacted with the sterilization raw liquid. The sterilizing steam can be transmitted to the sterilizing spray head 4 through the third pipeline 10 to be sprayed on the product through the sterilizing spray head 4, so that the sterilizing treatment of the product is realized. When the sterilizing steam is in contact with the product, because the temperature of the product is low, part of the sterilizing steam is liquefied on the product, and the residual amount of the sterilizing stock solution exists on the product.

The drying assembly includes a heater 51 and a fourth pipeline 52. The heater 51 is connected to a gas source and is used for heating the gas flowing through, so that the temperature of the gas is increased after the gas flows through the heater 51. One end of the fourth pipeline 52 is communicated with the heater 51, and the other end of the fourth pipeline 52 is used for transmitting gas to the product, so that the high-temperature gas can be in contact with the product through the fourth pipeline 52, the product after the steam is sterilized through spraying is dried, and in the process of drying the product, residual sterilizing stock solution on the product can be activated, so that the product is further sterilized, meanwhile, the sterilizing stock solution can be decomposed, and further, the residual amount of the sterilizing stock solution on the product is reduced. Optionally, in this embodiment, the other end of the fourth pipeline 52 is connected to a drying nozzle 20, and the drying nozzle 20 injects high-temperature gas to the product, so as to improve the contact effect between the high-temperature gas and the product.

Among the sterilization system that this embodiment provided, provide steam to mixing arrangement 3 through first pipeline 11, provide the stoste of disinfecting to mixing arrangement 3 through second pipeline 22, steam and stoste of disinfecting mix the back in mixing arrangement 3, spray on the product through sterilization shower nozzle 4, in order to realize the sterilization to the product, after disinfecting to the product, heater 51 transmits the gas after will heating to the product on through fourth pipeline 52, in order to dry the product, in-process to product drying, remaining stoste of disinfecting on the product can be activated again, in order to can disinfect once more to the product, can also make the stoste of disinfecting decompose, and then reduce the residual amount of stoste of disinfecting on the product, the bactericidal effect to the product has been improved, can also the residual amount on the effective control product.

Optionally, the sterilization system in this embodiment further includes a controller, and the controller can be connected to the first switch valve 12, the second switch valve 222, the heater 51 and the sterilization nozzle 4, and is configured to control the opening degrees of the first switch valve 12 and the second switch valve 222, and control the opening and closing of the heater 51 and the sterilization nozzle 4.

In this embodiment, the stock solution supply assembly further comprises a stock solution delivery device, and the second pipeline 22 is communicated with the stock solution storage device 21 through the stock solution delivery device. Specifically, as shown in fig. 1, the raw liquid conveying device includes a raw liquid tank 23, a fifth pipeline 24, and a pressure conveying pipeline 25. One end of the fifth pipeline 24 is connected to the raw liquid storage device 21, the other end of the fifth pipeline 24 and the second pipeline 22 are both connected to the raw liquid tank 23, and the sterilization raw liquid in the raw liquid storage device 21 can flow into the raw liquid tank 23 through the fifth pipeline 24. One end of the pressure conveying pipeline 25 is communicated with the raw liquid tank 23, the other end of the pressure conveying pipeline 25 is communicated with a compressed air source, the compressed air source can generate compressed air, the compressed air in the compressed air source is input into the raw liquid tank 23 through the compressed conveying pipeline 25, the pressure in the raw liquid tank 23 is increased, the sterilization raw liquid in the raw liquid tank 23 can be extruded into the second pipeline 22, namely, the compressed air in the raw liquid tank 23 can drive the sterilization raw liquid in the raw liquid tank 23 to enter the mixing device 3 through the second pipeline 22, namely, the sterilization raw liquid in the embodiment is conveyed through air pressure, and compared with a pumping mode in the prior art, the high continuity and stability are achieved.

Further, with continued reference to fig. 1, the raw liquid delivery apparatus further includes a first pressure sensor 26, an exhaust pipe 27, and a first proportional regulating valve 28 mounted on the exhaust pipe 27. The first pressure sensor 26 detects the pressure of the raw liquid tank 23, and the exhaust pipe 27 is connected to the pressure transmission line 25, so that when the raw liquid tank 23 needs to be exhausted or the pressure in the raw liquid tank 23 needs to be reduced, the compressed gas in the raw liquid tank 23 is exhausted through the pressure transmission line 25 and the exhaust pipe 27. The opening degree of the first proportional regulating valve 28 is determined based on the signal detected by the first pressure sensor 26. Specifically, the first proportional control valve 28 and the first pressure sensor 26 are respectively connected to the controller, the first pressure sensor 26 detects a pressure signal in the raw liquid tank 23 and transmits the pressure signal to the controller, the controller sends a control signal to the proportional control valve after analysis and calculation, and the first proportional control valve 28 adjusts the opening degree of the valve according to the received control signal and a preset parameter value, so as to accurately control the flow rate in the exhaust pipe 27.

Further, in order to reduce noise when the exhaust pipe 27 exhausts, as shown in fig. 1, the raw liquid feeding apparatus further includes a silencer 29 installed at the end of the exhaust pipe 27 to prevent noise pollution.

In this embodiment, as shown in fig. 1, the raw liquid delivery apparatus further includes a second manual on-off valve 212, a third pressure reducing valve 213, a third pressure gauge 214, and a second automatic on-off valve 215, which are installed on the pressure delivery pipeline 25. The second manual on-off valve 212, the third pressure reducing valve 213, the third pressure gauge 214 and the second automatic on-off valve 215 are all installed upstream of the interface between the pressure transmission pipeline 25 and the exhaust pipe 27. The second manual on-off valve 212 and the second automatic on-off valve 215 are both used for controlling the flow rate of the compressed air in the pressure delivery pipeline 25, so that the pressure delivery pipeline 25 has both a manual control function and an electric control function. A third pressure reducing valve 213 is used to adjust the pressure in the pressure feed line 25 to the desired pressure, and a third pressure gauge 214 is used to indicate the pressure of the compressed air in the pressure feed line 25. The third pressure reducing valve 213 and the second automatic opening/closing valve 215 are connected to a controller, respectively, so that the controller controls the opening degrees of the third pressure reducing valve 213 and the second automatic opening/closing valve 215.

Optionally, with continued reference to fig. 1, the stock solution supply assembly further comprises a stock solution pump 217, a first check valve 218, and a level sensor 219. The raw liquid pump 217 is connected to the fifth pipeline 24 and is used for driving the sterilization raw liquid in the raw liquid storage device 21 to enter the raw liquid tank 23 through the second pipeline 24. The liquid level sensor 219 is used to detect the amount of the sterilization stock solution in the stock solution tank 23, and in order to prevent the sterilization stock solution in the stock solution tank 23 from being too much or too little, the start-up of the stock solution pump 217 is controlled by the data detected by the liquid level sensor 219 to improve the reliability of the stock solution supply assembly. A first check valve 218 is installed on the fifth pipe 24 downstream of the raw liquid pump 217, and the first check valve 218 is used to prevent the sterilizing raw liquid in the raw liquid tank 23 from flowing back.

Illustratively, the stock solution storage device 21 is provided with a low level switch 216, and when the liquid level in the stock solution storage device 21 is lower than a preset value, the low level switch 216 feeds back to the controller to prompt the replacement of the stock solution storage device 21 or the need of injecting the sterilization stock solution into the stock solution storage device 21.

In this embodiment, as shown in fig. 1, the sterilization system further includes a first filtering device 6. The first filtering device 6 is connected to the second pipeline 22 and located upstream of the second on-off valve 222, and is used for filtering the sterilization liquid in the second pipeline 22 to improve the purity of the sterilization liquid entering the mixing device 3.

Further, the raw liquid supply assembly further comprises a second flow sensor 210 and a third proportional regulating valve 211 installed on the second pipeline 22, wherein the second flow sensor 210 and the third proportional regulating valve 211 are both located at the downstream of the first filtering device 6 and are arranged near the mixing device 3. The second flow sensor 210 is used for detecting the flow rate of the sterilization raw liquid in the second pipeline 22, and the opening degree of the third proportional control valve 211 is determined according to the signal detected by the second flow sensor 210, so that the accuracy of controlling the flow rate of the sterilization raw liquid in the second pipeline 22 can be improved. For example, the second flow sensor 210 can send a detected flow signal to the controller, and the controller sends a control signal to the third proportional regulating valve 211 according to the flow signal, so that the third proportional regulating valve 211 automatically adjusts the opening degree according to the control signal.

Still further, a third pressure sensor 221 is further installed on the second pipeline 22, and the third pressure sensor 221 is disposed between the first filtering device 6 and the second on-off valve 222 and is used for detecting the pressure of the sterilization raw liquid in the second pipeline 22. When the third pressure sensor 221 detects that the pressure of the second pipeline 22 is in the normal range, but the flow detected by the second flow sensor 210 is lower than the lower flow limit, it indicates that the first filtering device 6 may be blocked, and needs to be fed back to the controller for alarm processing.

Referring to fig. 1, the raw liquid supply assembly further includes a liquid discharge pipe, the liquid discharge pipe is connected to the second pipeline 22, and an interface between the liquid discharge pipe and the second pipeline 22 is located between the first filtering device 6 and the third pressure sensor 221. The drain pipe is used for emptying the raw liquid tank 23, and a third automatic switch valve 220 is arranged on the drain pipe. When the stock solution tank 23 needs to be emptied, the second on-off valve 222 is automatically closed, and the third automatic on-off valve 220 is automatically opened, so that the sterilization stock solution in the stock solution tank 23 is discharged through the second pipeline 22 and the drain pipe.

Optionally, as shown in fig. 1, the sterilization system further comprises a cooling device. The cooling device includes a cooling pipe 71 and a heat exchanger 72. The heat exchanger 72 has a raw liquid flow passage and a cooling flow passage, the second pipeline 22 is communicated with the raw liquid flow passage, the cooling pipe 71 is communicated with the cooling flow passage and a cooling water source, the cooling water source is used for providing cooling liquid for the cooling flow passage through the cooling pipe 71, and the sterilization raw liquid in the raw liquid flow passage and the cooling water in the cooling flow passage can exchange heat to reduce the temperature of the sterilization raw liquid, thereby preventing precipitates of the sterilization raw liquid from being generated in the second pipeline 22.

Further, the heat exchanger 72 is located downstream of the third proportional regulating valve 211, so that the heat exchanger 72 can cool the sterilization liquid stock in the second pipeline 22, thereby preventing the generated precipitates from clogging the second flow sensor 210. Optionally, a second check valve 223 is further installed on the second pipeline 22, and the second check valve 223 is located between the heat exchanger 72 and the mixing device 3 and is used for preventing the sterilization stock solution from flowing back.

Optionally, a fifth automatic on-off valve 73 and a manual regulating valve 74 are installed on the cooling pipe 71, and both are used for regulating the flow rate of the cooling liquid in the cooling pipe 71.

As shown in fig. 1, the steam supply assembly optionally further comprises a first flow sensor 13 and a second proportional regulating valve 14 mounted on the first pipeline 11. Wherein the first flow sensor 13 is used to detect the flow rate of the steam in the first pipeline 11, and the opening degree of the second proportional regulating valve 14 is determined according to the signal detected by the first flow sensor 13, that is, the opening degree of the second proportional regulating valve 14 is controlled by the signal detected by the first flow sensor 13.

Further, referring to fig. 1, the steam supply assembly further includes a second pressure reducing valve 15, a first pressure gauge 16, a second pressure sensor 17, a first automatic switch valve 18, a first steam trap 19 and a second steam trap 110 respectively installed on the first pipeline 11. A first trap 19 is located upstream of the first on-off valve 12 and is used to trap the first pipe 11; a second pressure reducing valve 15 is located downstream of the first switching valve 12 and is used to control the pressure in the first line 11 to a desired value; a first pressure gauge 16 is located downstream of the second pressure reducing valve 15 and is used to indicate the pressure of the steam in the first line 11; second trap 110 is located downstream of first pressure gauge 16; second pressure sensor 17 is located downstream of second trap 110 and is used to sense the pressure of steam in first conduit 11; the first automatic on-off valve 18 is located between the second pressure sensor 17 and the first flow sensor 13, and is used to control the flow rate of the steam in the first pipeline 11.

Optionally, as shown in fig. 1, the drying assembly further includes a third flow sensor 53 and a fourth proportional regulating valve 54 mounted on the fourth pipeline 52, and the third flow sensor 53 and the fourth proportional regulating valve 54 are located upstream of the heater 51. Wherein the third flow sensor 53 is used for detecting the pressure of the gas in the fourth pipeline 52, and the opening degree of the fourth proportional regulating valve 54 is determined according to the signal detected by the third flow sensor 53, that is, the opening degree of the fourth proportional regulating valve 54 is controlled by the signal detected by the third flow sensor 53.

Further, the drying assembly further includes a first manual switch valve 55, a first pressure reducing valve 56, a first pressure gauge 57, a first automatic switch valve 58 and a temperature sensor 59, which are respectively installed on the fourth pipeline 52. Wherein, the first manual switch valve 55 and the first automatic switch valve 58 are both used for adjusting the flow rate of the gas in the fourth pipeline 52, and are both located upstream of the fourth proportional control valve 54; a first pressure reducing valve 56 is located between the first manual switching valve 55 and the first automatic switching valve 58, and is used to control the pressure of the fourth line 52 to a desired value; a first pressure gauge 57 is located between the first pressure reducing valve 56 and the first automatic on-off valve 58 for indicating the pressure of the gas in the fourth line 52.

Furthermore, in order to ensure that the gas of the dried product is free of other impurities, the sterilization system further comprises a pre-filter 8 and a sterilization filter 9 respectively communicated with the fourth pipeline 52. Wherein, prefilter 8 and sterilizing filter 9 are located between first manometer 57 and first automatic switch valve 58, and prefilter 8 is located sterilizing filter 9 upstream, and prefilter 8 and sterilizing filter 9 all are used for filtering the gas in fourth pipeline 52 for the gas of contacting with the product is aseptic gas.

The sterilization system provided by the embodiment has a sterilization process and a drying process when in use, and the following respectively describes the implementation modes of the two processes.

The sterilization process comprises the supply of clean steam, the supply of sterilization stock solution and the mixing of the steam and the sterilization stock solution. Wherein:

the specific steps of the clean steam supply are as follows: clean steam of the steam source enters the first pipeline 11 and passes through the first drain valve 19, and the first drain valve 19 can drain condensed water in the first pipeline 11 to prevent the condensed water from entering the mixing device 3; then, opening a first switch valve 12, regulating the clean steam to a specified pressure through a second pressure reducing valve 15 according to a second pressure gauge 14, detecting the pressure of the clean steam on line by a second pressure sensor 17, and feeding back the pressure to a controller for alarm processing when the pressure is abnormal; a second drain valve 110 is arranged in front of the first automatic switch valve 18 to drain condensed water generated before the clean steam pipeline enters the mixing device 3; the first automatic switch valve 18 is opened, and the clean steam enters the mixing device 3 after the flow of the clean steam is regulated by the second proportional regulating valve 14.

The supply step of the sterilization stock solution comprises the following steps: the raw liquid pump 217 pumps the sterilization raw liquid (the concentration of the sterilization raw liquid is usually 30% -35%) in the raw liquid storage device 21 to the raw liquid tank 23, the raw liquid pump 217 is controlled by a liquid level sensor 219, the first one-way valve 218 is automatically opened when the raw liquid pump 217 is started, and is automatically closed when the raw liquid pump 217 is stopped; opening the second manual switching valve 212, and regulating the compressed air to a designated pressure through the third pressure reducing valve 213 according to the third pressure gauge 214; the second automatic on-off valve 215 is opened, compressed air is introduced into the raw liquid tank 23, back pressure is built in the raw liquid tank 23, and meanwhile the first proportional control valve 28 (which is controlled by the first pressure sensor 26) controls the back pressure exhaust opening degree of the raw liquid tank 23 so as to stabilize the back pressure of the raw liquid tank 23; the second switch valve 222 is opened, the third automatic switch valve 220 is closed, the sterilizing stock solution is filtered by the first filtering device 6 under the pressure of compressed air, and then is sent to the mixing device 3 to be mixed with clean steam after the flow is regulated by the third proportional regulating valve 211. The inlet of the mixing device 3 is provided with a second non return valve 223 to prevent steam from escaping into the second pipe 22. Wherein, the outlet of the first filter device 6 is provided with a third pressure sensor 221, when the pressure difference between the first pressure sensor 26 and the third pressure sensor 221 is larger than a certain value, the blockage of the first filter device 6 is proved, and the blockage can be fed back to the controller for alarm processing.

The mixing steps of the steam and the sterilization stock solution are as follows: uniformly mixing a certain amount of sterilization stock solution and a certain amount of clean steam in a mixing device 3 to form sterilization steam, connecting the sterilization steam into a sterilization area 100 shown in figure 1, and sterilizing the product through a sterilization nozzle 4; the length of the third pipeline 10 from the outlet of the mixing device 3 to the sterilizing zone 100 is controlled to be the shortest, so as to avoid steam condensate from being generated due to long-distance transportation and influencing the sterilizing effect.

The drying process comprises the following steps: opening the first manual switching valve 55, and regulating the gas in the fourth line 52 to a specified pressure by the first pressure reducing valve 56 according to the first pressure gauge 57; the first automatic switch valve 58 is opened, the gas is filtered by the pre-filter 8 and the sterilizing filter 9, the flow is adjusted by the fourth proportional control valve 54, and then the gas is sent to the heater 51 to be heated to the designated temperature to become sterile hot air, wherein the heater 51 is controlled by the temperature sensor 59; then, the sterile hot air is introduced into the drying area 200 shown in fig. 1 to dry the product, and the sterilization raw liquid (such as hydrogen peroxide) is decomposed while the sterilization raw liquid is activated for sterilization.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the utility model, which changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. A sterilization system, comprising:

the steam supply assembly comprises a first pipeline (11) and a first switch valve (12) arranged on the first pipeline (11), and the first pipeline (11) is communicated with a steam source;

the stock solution supply assembly comprises a stock solution storage device (21), a second pipeline (22) and a second switch valve, wherein the second pipeline (22) is communicated with the stock solution storage device (21), and the second switch valve is arranged on the second pipeline (22);

a mixing device (3), the first pipeline (11) and the second pipeline (22) being respectively communicated with the mixing device (3);

the sterilizing spray head (4) is communicated with the mixing device (3) through a third pipeline and is used for spraying sterilizing steam on the product;

the drying assembly comprises a heater (51) and a fourth pipeline (52), the heater (51) is communicated with a gas source and used for heating gas flowing through, one end of the fourth pipeline (52) is communicated with the heater (51), and the other end of the fourth pipeline (52) is used for conveying gas to the product so as to dry the product sprayed with the sterilizing steam.

2. The sterilization system according to claim 1, wherein the dope supply assembly further comprises a dope delivery device, the stock solution conveying device comprises a stock solution tank (23), a fifth pipeline (24) and a pressure conveying pipeline (25), one end of the fifth pipeline (24) is communicated with the stock solution storage device (21), the other end of the fifth pipeline (24) and the second pipeline (22) are both communicated with the stock solution tank (23), one end of the pressure conveying pipeline (25) is communicated with the stock solution tank (23), the other end of the pressure conveying pipeline (25) is communicated with a compressed air source, compressed air is input into the stock solution tank (23) through the pressure transmission pipeline (25), to drive the sterilizing stock solution in the stock solution tank (23) to enter the mixing device (3) through the second pipeline (22).

3. The sterilization system according to claim 2, wherein said stock solution delivery means further comprises a first pressure sensor (26), an exhaust pipe (27), and a first proportional regulating valve (28) mounted on said exhaust pipe (27), said first pressure sensor (26) is used for detecting the pressure of said stock solution tank (23), said exhaust pipe (27) is connected to said pressure delivery pipe (25), and the opening degree of said first proportional regulating valve (28) is determined according to the signal detected by said first pressure sensor (26).

4. A sterilisation system according to claim 3, wherein said dope delivery means further comprises a silencer (29) mounted at the end of said exhaust pipe (27).

5. A sterilisation system according to claim 1, further comprising a first filter device (6), said first filter device (6) being in communication with said second conduit (22) for filtering a sterilisation stock solution in said second conduit (22).

6. The sterilization system according to claim 1, further comprising a cooling device, wherein the cooling device comprises a cooling pipe (71) and a heat exchanger (72), the heat exchanger (72) has a stock solution flow passage and a cooling flow passage, the second pipeline (22) is communicated with the stock solution flow passage, the cooling pipe (71) is communicated with the cooling flow passage and a cooling water source, and the sterilization stock solution in the stock solution flow passage can exchange heat with the cooling water in the cooling flow passage.

7. A sterilisation system according to claim 1, wherein said steam supply assembly further comprises a first flow sensor (13) and a second proportional regulating valve (14) mounted on said first conduit (11), said first flow sensor (13) being adapted to detect a flow rate of said steam in said first conduit (11), an opening degree of said second proportional regulating valve (14) being determined in response to a signal detected by said first flow sensor (13).

8. The sterilization system according to claim 1, wherein the stock solution supply assembly further comprises a second flow sensor (210) and a third proportional regulating valve (211) installed on the second pipeline (22), the second flow sensor (210) is used for detecting the flow rate of the sterilization stock solution in the second pipeline (22), and the opening degree of the third proportional regulating valve (211) is determined according to the signal detected by the second flow sensor (210).

9. The sterilization system according to claim 1, wherein said drying assembly further comprises a third flow sensor (53) and a fourth proportional regulating valve (54) mounted on said fourth pipeline (52), said third flow sensor (53) is used for detecting the pressure of the gas in said fourth pipeline (52), and the opening degree of said fourth proportional regulating valve (54) is determined according to the signal detected by said third flow sensor (53).

10. A sterilization system according to claim 1, further comprising a pre-filter (8) and a sterilizing filter (9) respectively communicating with said fourth pipeline (52), said pre-filter (8) and said sterilizing filter (9) being used for filtering the gas in said fourth pipeline (52).

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