An UHT sterilization system

Abstract

The application belongs to the technical field of sterilization and discloses a UHT sterilization system which comprises a material tank, a heat exchange device, a cooling device and a re-heating device. The material tank is connected with a feeding pipe and a return pipe, the return pipe is provided with a first temperature gauge, a first automatic valve and a second automatic valve, the feeding pipe is connected with the first automatic valve, and the feeding pipe is provided with a second temperature gauge; the heat exchange device comprises a first heat exchange assembly and a second heat exchange assembly, the first heat exchange assembly and the second heat exchange assembly are communicated, one end of the first heat exchange assembly is communicated with the material tank, the cooling device is connected with the second heat exchange assembly, the cooling device is connected with a discharging pipe, and the discharging pipe and the return pipe are communicated through a reflux pipe; and the re-heating device is communicated with the material tank and the second automatic valve. Through the structural arrangement, the system can realize sterilization of low-temperature and high-temperature materials, has a wide range of application products and can meet the sterilization requirements of diversified product lines.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sterilization, in particular to a UHT sterilization system. BACKGROUND

[0002] With the improvement of living quality, people's demand for food safety is also increasing, therefore, food enterprises need to sterilize food for the consideration of food safety, common sterilization methods include: ultra-high pressure sterilization technology, low-temperature sterilization technology, pasteurization, UHT sterilization technology, etc. UHT sterilization is the abbreviation of ultra-high temperature sterilization, which can heat the product to 135-150℃ in a short time and can realize rapid cooling. This sterilization method can achieve sterilization purpose in an instant, and the sterilization effect is particularly good, almost reaching or approaching sterilization requirements, and the chemical change caused is small. However, in the current traditional UHT sterilization, the feed temperature and discharge temperature of a certain product are usually specified, and generally low-temperature feed and low-temperature discharge, which cannot meet the high-temperature feed and low-temperature discharge, the function is relatively single, the applicable product range is small, and it cannot meet the sterilization demand of diversified product lines of customers.

[0003] Therefore, there is an urgent need for a UHT sterilization system to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a UHT sterilization system to solve the problems of single function, small applicable product range and inability to meet the sterilization demand of diversified product lines of the existing UHT sterilization method.

[0005] To achieve this purpose, the present application adopts the following technical scheme:

[0006] A UHT sterilization system, comprising:

[0007] A material tank, a feed pipe and a return pipe are communicated on the material tank, a first temperature gauge, a first automatic valve and a second automatic valve are arranged on the return pipe, the feed pipe is connected with the first automatic valve, and a second temperature gauge is arranged on the feed pipe;

[0008] A heat exchange device, comprising a first heat exchange assembly and a second heat exchange assembly, the first heat exchange assembly and the second heat exchange assembly are communicated, one end of the first heat exchange assembly is communicated with the material tank, one end of the second heat exchange assembly is connected with a cooling device, an outlet pipe is communicated on the cooling device, and the outlet pipe is communicated with the return pipe through a reflux pipe;

[0009] A re-heating device, the re-heating device is communicated with the material tank and the second automatic valve, and a third automatic valve is arranged on the re-heating device.

[0010] As preferred, the first heat exchange assembly comprises a first steam tank, a first heat exchanger, a second heat exchanger, a first hot water tank and a first circulating pump, which are sequentially communicated in series through pipes to form a loop, and the second heat exchanger is communicated with the material tank.

[0011] As preferred, the second heat exchange assembly comprises a second steam tank, a third heat exchanger, a second hot water tank and a second circulating pump, which are sequentially communicated in series through pipes to form a loop, and the third heat exchanger is communicated with the first heat exchanger.

[0012] As preferred, a fifth heat exchanger is arranged between the first circulating pump and the first steam tank, which are sequentially communicated in series through pipes to form a loop, one end of the fifth heat exchanger is communicated with the third heat exchanger, and the other end is communicated with the cooling device.

[0013] As preferred, the additional heating device comprises a first water inlet pipe, a fourth heat exchanger and a second water inlet pipe which are sequentially communicated, the first water inlet pipe is communicated with the second automatic valve, the second water inlet pipe is communicated with the material tank, the third automatic valve is arranged on the first water inlet pipe, one end of the fourth heat exchanger is communicated with the second heat exchanger through a first heat exchange pipe, and the other end is communicated with the first hot water tank through a second heat exchange pipe, and a fourth automatic valve is arranged on the first heat exchange pipe.

[0014] As preferred, a communication pipe is arranged between the first heat exchange pipe and the second heat exchange pipe, and a second flow valve is arranged on the communication pipe.

[0015] As preferred, the material tank, the first heat exchanger, the second heat exchanger, the third heat exchanger, the fourth heat exchanger and the fifth heat exchanger are all made of stainless steel.

[0016] As preferred, a third temperature meter is arranged on the discharge pipe.

[0017] As preferred, a first flow valve is arranged between the first automatic valve and the second automatic valve.

[0018] As preferred, the first flow valve is a one-way valve.

[0019] The present application has the following beneficial effects:

[0020] The UHT sterilization system provided by the application can realize sterilization of low-temperature materials and high-temperature materials, and can guarantee the sterile environment of the material tank, has a wide range of application products, and can meet the sterilization needs of diversified product lines.BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a schematic diagram of the overall structure of the UHT sterilization system provided by the application.

[0022] In the figure:

[0023] 1, material tank; 11, feeding pipe; 111, second temperature meter; 12, material return pipe; 121, first temperature meter; 122, first automatic valve; 123, second automatic valve; 124, first flow valve; 13, reflux pipe;

[0024] 2, heat exchange device; 21, first heat exchange assembly; 211, first steam tank; 212, first heat exchanger; 213, second heat exchanger; 214, first hot water tank; 215, first circulating pump; 216, fifth heat exchanger; 22, second heat exchange assembly; 221, second steam tank; 222, third heat exchanger; 223, second hot water tank; 224, second circulating pump;

[0025] 3, cooling device; 31, discharge pipe; 311, third temperature meter;

[0026] 4, heating device; 41, first water inlet pipe; 411, third automatic valve; 42, fourth heat exchanger; 421, first heat exchange pipe; 4211, fourth automatic valve; 422, second heat exchange pipe; 43, second water inlet pipe; 44, communication pipe; 441, second flow valve. DETAILED DESCRIPTION

[0027] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely exemplary of the application and that the application is not limited to such exemplary embodiments. It should also be understood that, in the description of the application, the terms "connected" and "coupled" are used generically and broadly in their ordinary sense and are not restricted to an direct and physical connection unless otherwise indicated by context.

[0028] In the description of the application, unless otherwise clearly specified and limited, the terms "connected", "coupled", and "fixed" should be understood broadly, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal connection of two elements, or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0029] In the application, unless otherwise clearly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above", and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The "lower", "below", and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0030] In the description of the embodiments, the terms "upper", "lower", "right", and "left" orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first" and "second" are only used to distinguish in the description and do not have special meanings.

[0031] As Figure 1As shown, the embodiment provides a UHT sterilization system, which comprises a material tank 1, a heat exchange device 2, a cooling device 3 and a re-heating device 4. Wherein, the material tank 1 is communicated with a feeding pipe 11 and a back material pipe 12, the back material pipe 12 is provided with a first temperature gauge 121, a first automatic valve 122 and a second automatic valve 123, the feeding pipe 11 is connected with the first automatic valve 122, and the feeding pipe 11 is provided with a second temperature gauge 111; the heat exchange device 2 comprises a first heat exchange assembly 21 and a second heat exchange assembly 22, the first heat exchange assembly 21 and the second heat exchange assembly 22 are communicated, one end of the first heat exchange assembly 21 is communicated with the material tank 1, one end of the second heat exchange assembly 22 is connected with the cooling device 3, the cooling device 3 is communicated with a discharging pipe 31, and the discharging pipe 31 is communicated with the back material pipe 12 through a backflow pipe 13; the re-heating device 4 is communicated with the material tank 1 and the second automatic valve 123, and the re-heating device 4 is provided with a third automatic valve 411.

[0032] The UHT sterilization system provided in the embodiment can meet the needs of low-temperature material entering the UHT sterilization system, and the low-temperature material is discharged in the form of low-temperature material, that is, low-temperature material in and low-temperature material out. The re-heating device 4 does not work in this process. When the second temperature detector 111 detects that the material in the feeding pipe 11 is high-temperature material, the first automatic valve 122 is opened, the high-temperature material enters the material tank 1, and then sequentially passes through the first heat exchange assembly 21 and the second heat exchange assembly 22 for high-temperature sterilization, and then flows through the cooling device 3 to cool the material to change into low-temperature material and is discharged through the discharge pipe 31. Thus, the UHT sterilization system provided in the embodiment can meet the needs of high-temperature material entering the UHT sterilization system and being discharged in the form of low-temperature material, that is, high-temperature material in and low-temperature material out. When the low-temperature material cannot be completely discharged, the low-temperature material needs to be returned to the material tank 1, but the low-temperature material needs to be warmed up to ensure that the temperature of the material in the material tank 1 is consistent with the temperature of the high-temperature material entering the material tank 1 through the feeding pipe 11 again, so as to avoid a large temperature difference in the material tank 1, thereby damaging the sterile system. In this process, the first automatic valve 122 is closed, the second automatic valve 123 is opened, the re-heating device 4 is warmed up, and the low-temperature material flows through the re-heating device 4 and then returns to the material tank 1, so that the temperature of the low-temperature material is raised to return to high-temperature material. Thus, the UHT sterilization system provided in the embodiment can sterilize both low-temperature material and high-temperature material, can ensure the sterile environment of the material tank 1, has a wide range of applications, and can meet the needs of sterilization of diversified product lines.

[0033] Optionally, as Figure 1As shown, the first heat exchange assembly 21 comprises a first steam tank 211, a first heat exchanger 212, a second heat exchanger 213, a first hot water tank 214 and a first circulating pump 215, which are sequentially connected in series through pipelines to form a loop, and the second heat exchanger 213 is connected with the material tank 1. In this embodiment, the first heat exchange assembly 21 is used to sterilize the material in the material tank 1 through the first heat exchanger 212 and the second heat exchanger 213. It can be understood that, by starting the first circulating pump 215 and inputting high-temperature steam into the first steam tank 211, the liquid in the first hot water tank 214 is heated to high-temperature liquid when flowing through the first steam tank 211, and the high-temperature liquid sequentially flows through the first heat exchanger 212 and the second heat exchanger 213 to heat the first heat exchanger 212 and the second heat exchanger 213. During operation, the high-temperature liquid forms a self-circulation to ensure that the first heat exchanger 212 and the second heat exchanger 213 always maintain a high-temperature state, and the material in the material tank 1 sequentially flows through the second heat exchanger 213 and the first heat exchanger 212 to achieve high-temperature sterilization.

[0034] Optionally, as shown in Figure 1 The second heat exchange assembly 22 comprises a second steam tank 221, a third heat exchanger 222, a second hot water tank 223 and a second circulating pump 224, which are sequentially connected in series through pipelines to form a loop, and the third heat exchanger 222 is connected with the first heat exchanger 212. It can be understood that, in order to prevent the first heat exchange assembly 21 from not being able to completely sterilize the material, the second heat exchange assembly 22 is arranged to perform high-temperature sterilization on the material flowing through the first heat exchanger 212 again. By starting the second circulating pump 224 and inputting high-temperature steam into the second steam tank 221, the liquid in the second hot water tank 223 is heated to high-temperature liquid when flowing through the second steam tank 221, and the high-temperature liquid flows through the third heat exchanger 222 and heats the third heat exchanger 222. During operation, the high-temperature liquid forms a self-circulation to ensure that the third heat exchanger 222 always maintains a high-temperature state. Further, since the third heat exchanger 222 is connected with the first heat exchanger 212, the material flowing out of the first heat exchanger 212 is heated again by the third heat exchanger 222 to sterilize the material. Thus, the overall high-temperature sterilization of the material is completed.

[0035] Optionally, as shown in Figure 1As shown, a fifth heat exchanger 216 is installed between the first circulating pump 215 and the first steam tank 211. The fifth heat exchanger 216, the first steam tank 211, the first heat exchanger 212, the second heat exchanger 213, the first hot water tank 214, and the first circulating pump 215 are connected end-to-end through pipelines to form a loop. One end of the fifth heat exchanger 216 is connected to the third heat exchanger 222, and the other end is connected to the cooling device 3. It can be understood that by setting up the fifth heat exchanger 216, the material can be further heated to ensure thorough sterilization. The high-temperature liquid flows sequentially through the first heat exchanger 212, the second heat exchanger 213, and the fifth heat exchanger 216, heating the fifth heat exchanger 216. Thus, when the material flowing out of the third heat exchanger 222 passes through the fifth heat exchanger 216, it is once again heated at high temperature for sterilization, ensuring thorough sterilization and guaranteeing production quality.

[0036] Optionally, such as Figure 1 As shown, the reheating device 4 includes a first water inlet pipe 41, a fourth heat exchanger 42, and a second water inlet pipe 43 connected in sequence. The first water inlet pipe 41 is connected to the second automatic valve 123, and the second water inlet pipe 43 is connected to the material tank 1. The third automatic valve 411 is installed on the first water inlet pipe 41. One end of the fourth heat exchanger 42 is connected to the second heat exchanger 213 through the first heat exchange pipe 421, and the other end is connected to the first hot water tank 214 through the second heat exchange pipe 422. The fourth automatic valve 4211 is installed on the first heat exchange pipe 421. It is understood that in this embodiment, the high-temperature material is sterilized at high temperature through the first heat exchange component 21 and the second heat exchange component 22, and then cooled down by the cooling device 3 to become a low-temperature material. The low-temperature material flows back to the material tank 1. When it is necessary to heat up the low-temperature material, the low-temperature material flows through the return pipe 13 to the return pipe 12, and then flows through the second automatic valve 123 in sequence through the first water inlet pipe 41, the fourth heat exchanger 42 and the second water inlet pipe 43 into the material tank 1. During this process, the fourth automatic valve 4211 opens, and the high-temperature liquid in the second heat exchanger 213 flows through the first heat exchange pipe 421 to the fourth heat exchanger 42, heating the fourth heat exchanger 42. Then, it flows through the second heat exchange pipe 422 to the first hot water tank 214. This allows the low-temperature material to be heated when it flows through the fourth heat exchanger 42. In other words, the first steam tank 211, the first heat exchanger 212, the second heat exchanger 213, the fourth heat exchanger 42, the first hot water tank 214, the first circulating pump 215, and the fifth heat exchanger 216 are connected end to end to form a loop, thereby ensuring that the fourth heat exchanger 42 can maintain a high temperature to meet the heating requirements of the low-temperature material.

[0037] Optionally, such as Figure 1As shown, the first heat exchange pipe 421 and the second heat exchange pipe 422 are provided with a communication pipe 44, and the second flow valve 441 is arranged on the communication pipe 44. It can be understood that by adjusting the second flow valve 441, the flow rate of the high-temperature liquid flowing through the fourth heat exchanger 42 can be controlled, so that the temperature of the fourth heat exchanger 42 can be controlled, and different temperatures of the low-temperature material can be achieved to meet the different heating requirements of different materials.

[0038] Optionally, the material tank 1, the first heat exchanger 212, the second heat exchanger 213, the third heat exchanger 222, the fourth heat exchanger 42 and the fifth heat exchanger 216 are all made of stainless steel. Thus, the material tank 1, the first heat exchanger 212, the second heat exchanger 213, the third heat exchanger 222, the fourth heat exchanger 42 and the fifth heat exchanger 216 can be easily cleaned and have good heat conduction effect, which can reduce heat loss and ensure the sterilization effect and production quality of the material.

[0039] Optionally, as shown in Figure 1 A third temperature gauge 311 is arranged on the discharge pipe 31. The third temperature gauge 311 is arranged to monitor the temperature of the discharge pipe 31 in real time. When the cooling device 3 cools the material, if the material cannot meet the discharge temperature requirement, the cooling degree of the material can be controlled by adjusting the cooling device 3 to meet the required temperature of the discharge. Further, the cooling device 3 in the embodiment is a prior art, which will not be described here.

[0040] Optionally, as shown in Figure 1 A first flow valve 124 is arranged between the first automatic valve 122 and the second automatic valve 123. Thus, the rate of the material flowing back to the material tank 1 can be controlled. Further, the first flow valve 124 is a one-way valve, so that the material in the material tank 1 can be prevented from flowing back to the material return pipe 12.

[0041] According to the UHT sterilization system provided in the embodiment, several working conditions of the UHT sterilization system are exemplarily introduced:

[0042] Working condition one: low-temperature material feeding and low-temperature material discharging. As shown in Figure 1As shown, the second thermometer 111 detects that the material in the feed pipe 11 is a low-temperature material, the first automatic valve 122 opens, and the low-temperature material enters the material tank 1 for temporary storage. The first heat exchange component 21 and the second heat exchange component 22 are activated, and the first heat exchanger 212, the second heat exchanger 213, the third heat exchanger 222, and the fifth heat exchanger 216 are heated at high temperatures. The low-temperature material flows sequentially through the second heat exchanger 213, the first heat exchanger 212, the third heat exchanger 222, and the fifth heat exchanger 216, where it is sterilized by high temperature and becomes a high-temperature material. Then, the high-temperature material flows through the cooling device 3 and returns to a low-temperature material, and is discharged through the discharge pipe 31. This realizes the feeding and discharging of low-temperature material.

[0043] Operating Condition 2: Low-temperature material reflux self-circulation. For example... Figure 1 As shown, the second thermometer 111 detects that the material in the feed pipe 11 is a low-temperature material, the first automatic valve 122 opens, and the low-temperature material enters the material tank 1 for temporary storage. The first heat exchange component 21 and the second heat exchange component 22 are activated, and the first heat exchanger 212, the second heat exchanger 213, the third heat exchanger 222 and the fifth heat exchanger 216 are heated at high temperature. The low-temperature material flows through the second heat exchanger 213, the first heat exchanger 212, the third heat exchanger 222 and the fifth heat exchanger 216 in sequence and is sterilized by high temperature to become a high-temperature material. Then the high-temperature material flows through the cooling device 3 and returns to the low-temperature material. When the low-temperature material cannot be completely discharged from the discharge pipe 31, the low-temperature material flows into the return pipe 13, and then flows through the return pipe 12 into the material tank 1 for storage, waiting for the next sterilization. This realizes the self-circulation of low-temperature material return.

[0044] Operating Condition 3: Low-temperature materials are converted into water for self-circulation. For example... Figure 1As shown, the second thermometer 111 detects that the material in the feed pipe 11 is a low-temperature material. The first automatic valve 122 opens, and the low-temperature material enters the material tank 1 for temporary storage. The first heat exchange component 21 and the second heat exchange component 22 are activated. The first heat exchanger 212, the second heat exchanger 213, the third heat exchanger 222, and the fifth heat exchanger 216 are heated at high temperatures. The low-temperature material flows sequentially through the second heat exchanger 213, the first heat exchanger 212, the third heat exchanger 222, and the fifth heat exchanger 216, where it is sterilized by high temperature and becomes a high-temperature material. Then, the high-temperature material flows through the cooling device 3 and returns to a low-temperature material, which is then discharged through the discharge pipe 31. When the low-temperature material is completely discharged, the low-temperature material in the material tank 1 is basically emptied. Since the entire UHT sterilization system needs to operate continuously, there is no low-temperature material that needs to be sterilized at this time. Therefore, the third automatic valve 411 is opened, and water is introduced into the first water inlet pipe 41. The water then passes through the fourth heat exchanger 42 and the second water inlet pipe 43 in sequence into the material tank 1. Then, the water passes through the first heat exchanger 212, the second heat exchanger 213, the third heat exchanger 222, the fifth heat exchanger 216 and the cooling device 3 in sequence, and then flows into the return pipe 13. It then flows through the return material pipe 12 into the material tank 1. This cycle is repeated to achieve self-circulation of water, thereby ensuring that the entire UHT sterilization system always operates and maintains a sterile environment.

[0045] Operating Condition 4: High-temperature material feeding and low-temperature material discharging. For example... Figure 1 As shown, the second thermometer 111 detects that the material in the feed pipe 11 is high-temperature material, the first automatic valve 122 opens, and the high-temperature material enters the material tank 1 for temporary storage. The first heat exchange component 21 and the second heat exchange component 22 are activated, and the first heat exchanger 212, the second heat exchanger 213, the third heat exchanger 222, and the fifth heat exchanger 216 are heated at high temperature. The high-temperature material flows through the second heat exchanger 213, the first heat exchanger 212, the third heat exchanger 222, and the fifth heat exchanger 216 in sequence to be sterilized by high temperature. Then, the high-temperature material flows through the cooling device 3 and becomes low-temperature material, and is discharged through the discharge pipe 31. This realizes the feeding of high-temperature material and the discharge of low-temperature material.

[0046] Operating Condition 5: High-temperature material recirculation. (e.g., ...) Figure 1As shown, the second temperature detector 111 detects that the material in the feeding pipe 11 is high-temperature material, the first automatic valve 122 is opened, the high-temperature material enters the material tank 1 for temporary storage, the first heat exchange assembly 21 and the second heat exchange assembly 22 are started, the first heat exchanger 212, the second heat exchanger 213, the third heat exchanger 222 and the fifth heat exchanger 216 are heated by high temperature, the high-temperature material flows through the second heat exchanger 213, the first heat exchanger 212, the third heat exchanger 222 and the fifth heat exchanger 216 in turn and is sterilized by high temperature, then the high-temperature material is converted into low-temperature material after flowing through the cooling device 3, when the low-temperature material cannot be completely discharged from the discharging pipe 31, the low-temperature material needs to be returned to the material tank 1, but the low-temperature material needs to be heated, the first automatic valve 122 is closed, and the second automatic valve 123 and the fourth automatic valve 4211 are opened. After the fourth automatic valve 4211 is opened, the high-temperature liquid in the second heat exchanger 213 flows to the fourth heat exchanger 42 through the first heat exchange pipe 421, heats the fourth heat exchanger 42, and then flows to the first hot water tank 214 through the second heat exchange pipe 422, forming a circulation; after the first automatic valve 122 is closed and the second automatic valve 123 is opened, the low-temperature material flows through the first water inlet pipe 41 and enters the fourth heat exchanger 42 to be reheated, and then flows to the material tank 1 through the second water inlet pipe 43, waiting for the next sterilization. Thus, the high-temperature material is returned to the circulation.

[0047] Case six: high-temperature material is converted into water self-circulation. As shown, Figure 1 The second temperature detector 111 detects that the material in the feeding pipe 11 is high-temperature material, the first automatic valve 122 is opened, the high-temperature material enters the material tank 1 for temporary storage, the first heat exchange assembly 21 and the second heat exchange assembly 22 are started, the first heat exchanger 212, the second heat exchanger 213, the third heat exchanger 222 and the fifth heat exchanger 216 are heated by high temperature, the high-temperature material flows through the second heat exchanger 213, the first heat exchanger 212, the third heat exchanger 222 and the fifth heat exchanger 216 in turn and is sterilized by high temperature, then the high-temperature material is converted into low-temperature material after flowing through the cooling device 3, and the high-temperature material in the material tank 1 is basically emptied after being discharged through the discharging pipe 31. The third automatic valve 411 is opened, water is introduced into the first water inlet pipe 41, the water enters the material tank 1 through the fourth heat exchanger 42 and the second water inlet pipe 43 in turn, and then the water flows into the backflow pipe 13 after flowing through the first heat exchanger 212, the second heat exchanger 213, the third heat exchanger 222, the fifth heat exchanger 216 and the cooling device 3, and then flows into the material tank 1 through the backflow pipe 12, to form a circulation, so as to realize water self-circulation and ensure that the entire UHT sterilization system always operates and maintains a sterile environment.

[0048] Obviously, the above embodiments of the present application are merely exemplary but not intended to limit the embodiments of the present application. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. It is not necessary or possible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An UHT sterilization system, characterized in that, The utility model relates to a kind of material tank, heat exchange device and cooling device, and the utility model discloses the following technical scheme: Material tank (1), the material tank (1) is communicated with feed pipe (11) and return pipe (12), first temperature gauge (121), first automatic valve (122) and second automatic valve (123) are provided on the return pipe (12), the feed pipe (11) is connected with the first automatic valve (122), second temperature gauge (111) is provided on the feed pipe (11); Heat exchange device (2), including first heat exchange component (21) and second heat exchange component (22), the first heat exchange component (21) and the second heat exchange component (22) are communicated, one end of the first heat exchange component (21) is communicated with the material tank (1), one end of the second heat exchange component (22) is connected with cooling device (3), the cooling device (3) is communicated with discharge pipe (31), the discharge pipe (31) is communicated with the return pipe (12) by return flow pipe (13); Complex heating device (4), the complex heating device (4) is communicated with the material tank (1) and the second automatic valve (123), third automatic valve (411) is provided on the complex heating device (4); The first heat exchange component (21) includes first steam tank (211), first heat exchanger (212), second heat exchanger (213), first hot water tank (214) and first circulating pump (215), the first steam tank (211), the first heat exchanger (212), the second heat exchanger (213), the first hot water tank (214) and the first circulating pump (215) are sequentially communicated by pipeline and communicated to form loop, the second heat exchanger (213) is communicated with the material tank (1); The complex heating device (4) includes sequentially communicated first water inlet pipe (41), fourth heat exchanger (42) and second water inlet pipe (43), the first water inlet pipe (41) is communicated with the second automatic valve (123), the second water inlet pipe (43) is communicated with the material tank (1), the third automatic valve (411) is arranged on the first water inlet pipe (41), one end of the fourth heat exchanger (42) is communicated with the second heat exchanger (213) by first heat exchange pipe (421), and the other end is communicated with the first hot water tank (214) by second heat exchange pipe (422), fourth automatic valve (4211) is provided on the first heat exchange pipe (421).

2. The UHT sterilization system according to claim 1, characterized in that, The second heat exchange component (22) includes second steam tank (221), third heat exchanger (222), second hot water tank (223) and second circulating pump (224), the second steam tank (221), the third heat exchanger (222), the second hot water tank (223) and the second circulating pump (224) are sequentially communicated by pipeline and communicated to form loop, the third heat exchanger (222) is communicated with the first heat exchanger (212).

3. The UHT sterilization system according to claim 2, characterized in that, A fifth heat exchanger (216) is arranged between the first circulating pump (215) and the first steam tank (211), the fifth heat exchanger (216), the first steam tank (211), the first heat exchanger (212), the second heat exchanger (213), the first hot water tank (214) and the first circulating pump (215) are sequentially and circularly communicated through pipelines, one end of the fifth heat exchanger (216) is communicated with the third heat exchanger (222), and the other end is communicated with the cooling device (3).

4. The UHT sterilization system according to claim 1, characterized in that, A communication pipe (44) is arranged between the first heat exchange pipe (421) and the second heat exchange pipe (422), and a second flow valve (441) is arranged on the communication pipe (44).

5. The UHT sterilization system according to claim 3, characterized in that, The material tank (1), the first heat exchanger (212), the second heat exchanger (213), the third heat exchanger (222), the fourth heat exchanger (42) and the fifth heat exchanger (216) are all made of stainless steel.

6. The UHT sterilization system according to claim 1, characterized in that, A third temperature gauge (311) is arranged on the discharge pipe (31).

7. The UHT sterilization system according to claim 1, characterized in that, A first flow valve (124) is arranged between the first automatic valve (122) and the second automatic valve (123).

8. The UHT sterilization system according to claim 7, characterized in that, The first flow valve (124) is a one-way valve.

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