阅读说明：本技术 一种牛奶加工系统及加工方法 (Milk processing system and processing method ) 是由 陈英武 于 2021-03-12 设计创作，主要内容包括：本发明公开了一种牛奶加工系统及加工方法,包括：原料罐、预热机构、均质机构、巴氏杀菌机构、降温机构、暂存机构；所述原料罐与内管A的进料端A连接,所述内管A的储料端A与均质机构连接,所述均质机构与巴氏杀菌机构连接,所述巴氏杀菌机构与内管B的进料端B连接,所述内管B的出料端B与暂存机构连接。本发明的有益效果为：1、可以循环利用预热与降温中热交换水的能量,节能减排；2、在预热与降温过程中,牛奶保持流动状态,不易结块或沉淀。(The invention discloses a milk processing system and a milk processing method, which comprise the following steps: the device comprises a raw material tank, a preheating mechanism, a homogenizing mechanism, a pasteurization mechanism, a cooling mechanism and a temporary storage mechanism; the raw material tank is connected with a feeding end A of the inner tube A, a storage end A of the inner tube A is connected with a homogenizing mechanism, the homogenizing mechanism is connected with a pasteurization mechanism, the pasteurization mechanism is connected with a feeding end B of the inner tube B, and a discharging end B of the inner tube B is connected with a temporary storage mechanism. The invention has the beneficial effects that: 1. the energy of heat exchange water in preheating and cooling can be recycled, so that energy is saved and emission is reduced; 2. in the preheating and cooling processes, the milk keeps a flowing state and is not easy to agglomerate or precipitate.)

1. A milk processing system, comprising:

the device comprises a raw material tank, a preheating mechanism, a homogenizing mechanism, a pasteurization mechanism, a cooling mechanism and a temporary storage mechanism;

the preheating mechanism comprises a preheating tank and a coil A, a water storage cavity A is arranged in the preheating tank, the preheating tank is provided with an inner wall A and an outer wall A, an interlayer A is formed by enclosing the inner wall A and the outer wall A, the coil A comprises an inner tube A and an outer tube A, the outer tube A is sleeved outside the inner tube A, the left end of the inner tube A is a feeding end A, the right end of the inner tube A is a discharging end A, the right end of the outer tube A is a water inlet end A, the left end of the outer tube A is a water outlet end A, the water inlet end A of the outer tube A is communicated with the water storage cavity A, and the coil A is arranged in;

the homogenizing mechanism comprises a box body and a high-pressure homogenizing valve, wherein a homogenizing cavity is formed in the box body, the high-pressure homogenizing valve is arranged on the side face of the box body and communicated with the homogenizing cavity, a homogenizing stirring shaft is rotatably arranged in the homogenizing cavity, and a stirring head is arranged at the lower end of the homogenizing stirring shaft;

the cooling mechanism comprises a cooling tank and a coil B, a water storage cavity B is arranged in the cooling tank, the cooling tank is provided with an inner wall B and an outer wall B, an interlayer B is enclosed between the inner wall B and the outer wall B, the coil pipe B comprises an inner pipe B, an outer pipe B I and an outer pipe B II, the left end of the inner pipe B is a feeding end B, the right end of the inner pipe B is a discharging end B, the first outer pipe B and the second outer pipe B are sleeved outside the inner pipe B, the first outer pipe B is arranged on the outer side of the half section of the inner pipe B close to the feeding end B, one end of the first outer pipe B far away from the feeding end B is a water inlet end B, the other end of the first outer pipe B is a water outlet end B, the second outer pipe B is arranged on the outer side of the half section, close to the discharge end B, of the inner pipe B, one end, close to the discharge end B, of the second outer pipe B is a second water inlet end B, the other end of the second outer pipe B is a second water outlet end B, the first water inlet end B is communicated with the water storage cavity B, and the coil pipe B is wound in the interlayer B;

the raw material tank is connected with a feeding end A of the inner tube A, a storage end A of the inner tube A is connected with a homogenizing mechanism, the homogenizing mechanism is connected with a pasteurization mechanism, the pasteurization mechanism is connected with a feeding end B of the inner tube B, and a discharge end B of the inner tube B is connected with a temporary storage mechanism;

the water outlet end A of the outer pipe A is connected with the cooling tank, and the water outlet end B I of the outer pipe B I is connected with the preheating tank.

2. A milk processing system according to claim 1, wherein a storage mixer shaft is provided in the head tank.

3. A milk processing system according to claim 1, wherein the pasteurization mechanism comprises a heating tank, a heating mixer shaft rotatably disposed within the heating tank.

4. A milk processing system according to claim 1, wherein an electric heating device is provided in the water storage chamber a.

5. The milk processing system of claim 1, wherein the mixing head comprises a mixing blade and a mixing drum, the mixing drum is sleeved outside the mixing blade, the mixing drum is provided with homogenizing holes at the side and the bottom, and a homogenizing net is arranged in the homogenizing holes.

6. The milk processing system of claim 1, wherein the temporary storage mechanism comprises a temporary storage tank and a temporary storage stirring shaft, the temporary storage stirring shaft is rotatably arranged in the temporary storage tank, and a thermal insulation layer is arranged on the tank wall of the temporary storage tank.

7. The milk processing system of claim 1, wherein the feed tank, the preheating mechanism, the homogenizing mechanism, the pasteurization mechanism, the cooling mechanism, and the buffer mechanism are all connected to the CIP cleaning mechanism.

8. A milk processing method, a milk processing system according to any one of claims 1 to 7, comprising the steps of:

s1, the raw milk is refrigerated and transported to a processing plant after milking and stored in a raw material tank.

S2, pumping the milk raw material in the raw material tank into a preheating mechanism, making the milk raw material flow in the inner pipe A for 2-3 minutes, and preheating to 75 ℃.

And S3, pumping the milk raw material into a homogenizing mechanism through a preheating mechanism for homogenizing and refining, and keeping stirring for 5-10 minutes.

S4, after being refined, the milk raw material is pumped into a pasteurization mechanism, heated to 80-85 ℃ for high-temperature sterilization, and kept for 2.5-3 minutes.

S5, pumping the sterilized milk into a cooling mechanism, flowing in the inner tube B for 3-4 minutes, and cooling to 4-6 ℃.

And S6, pumping the cooled milk into a temporary storage mechanism, keeping the temperature at 4-6 ℃, and waiting for transportation or filling.

Technical Field

The invention belongs to the field of food processing equipment, and particularly relates to a milk processing system and a milk processing method.

Background

During the processing of milk, the milk is usually processed by "pasteurization", and high temperature is used to kill bacteria in the milk. Before high-temperature sterilization, milk needs to be preheated, so that the sterilization efficiency is improved, and a common milk preheating mechanism directly heats the milk in a preheating tank, so that the condition of uneven heating exists, and the processing efficiency is influenced; after high-temperature sterilization is carried out, cooling needs to be carried out on the milk, refrigeration of the milk is convenient to carry out, natural cooling of the milk is long in time and low in efficiency, bacteria are easy to breed in the process, and therefore the milk needs to be rapidly cooled and then refrigerated. In the process of processing the milk, the temperature of the milk is repeatedly changed, a large amount of energy is needed, the waste is serious, and the cost is high.

In conclusion, in order to solve the technical problems in the prior art, the invention designs the milk processing system and the milk processing method which are simple in structure and can preheat and cool the milk by recycling heat.

Disclosure of Invention

The invention aims to solve the technical problems in the prior art, and designs a milk processing system and a milk processing method which are simple in structure and can preheat and cool milk by recycling heat.

The purpose of the invention can be realized by the following technical scheme:

a milk processing system, comprising:

the device comprises a raw material tank, a preheating mechanism, a homogenizing mechanism, a pasteurization mechanism, a cooling mechanism and a temporary storage mechanism;

the preheating mechanism comprises a preheating tank and a coil A, a water storage cavity A is arranged in the preheating tank, the preheating tank is provided with an inner wall A and an outer wall A, an interlayer A is formed by enclosing the inner wall A and the outer wall A, the coil A comprises an inner tube A and an outer tube A, the outer tube A is sleeved outside the inner tube A, the left end of the inner tube A is a feeding end A, the right end of the inner tube A is a discharging end A, the right end of the outer tube A is a water inlet end A, the left end of the outer tube A is a water outlet end A, the water inlet end A of the outer tube A is communicated with the water storage cavity A, and the coil A is arranged in;

the homogenizing mechanism comprises a box body and a high-pressure homogenizing valve, wherein a homogenizing cavity is formed in the box body, the high-pressure homogenizing valve is arranged on the side face of the box body and communicated with the homogenizing cavity, a homogenizing stirring shaft is rotatably arranged in the homogenizing cavity, and a stirring head is arranged at the lower end of the homogenizing stirring shaft;

the cooling mechanism comprises a cooling tank and a coil B, a water storage cavity B is arranged in the cooling tank, the cooling tank is provided with an inner wall B and an outer wall B, an interlayer B is enclosed between the inner wall B and the outer wall B, the coil pipe B comprises an inner pipe B, an outer pipe B I and an outer pipe B II, the left end of the inner pipe B is a feeding end B, the right end of the inner pipe B is a discharging end B, the first outer pipe B and the second outer pipe B are sleeved outside the inner pipe B, the first outer pipe B is arranged on the outer side of the half section of the inner pipe B close to the feeding end B, one end of the first outer pipe B far away from the feeding end B is a water inlet end B, the other end of the first outer pipe B is a water outlet end B, the second outer pipe B is arranged on the outer side of the half section, close to the discharge end B, of the inner pipe B, one end, close to the discharge end B, of the second outer pipe B is a second water inlet end B, the other end of the second outer pipe B is a second water outlet end B, the first water inlet end B is communicated with the water storage cavity B, and the coil pipe B is wound in the interlayer B;

the raw material tank is connected with a feeding end A of the inner tube A, a storage end A of the inner tube A is connected with a homogenizing mechanism, the homogenizing mechanism is connected with a pasteurization mechanism, the pasteurization mechanism is connected with a feeding end B of the inner tube B, and a discharge end B of the inner tube B is connected with a temporary storage mechanism;

the water outlet end A of the outer pipe A is connected with the cooling tank, and the water outlet end B I of the outer pipe B I is connected with the preheating tank.

Further, a material storage stirring shaft is arranged in the raw material tank.

Further, pasteurization mechanism includes heating jar, heating (mixing) shaft, the setting is rotated in the heating jar to the heating (mixing) shaft.

Further, an electric heating device is arranged in the water storage cavity A.

Further, the stirring head comprises a stirring blade and a stirring cylinder, the stirring cylinder is sleeved outside the stirring blade, the side edge and the bottom of the stirring cylinder are provided with homogenizing holes, and a homogenizing net is arranged in the homogenizing holes.

Further, the temporary storage mechanism comprises a temporary storage tank and a temporary storage stirring shaft, the temporary storage stirring shaft is rotatably arranged in the temporary storage tank, and a thermal insulation layer is arranged on the wall of the temporary storage tank.

Furthermore, the head tank, the preheating mechanism, the homogenizing mechanism, the pasteurization mechanism, the cooling mechanism and the temporary storage mechanism are all connected with the CIP cleaning mechanism.

A milk processing method comprises the following steps:

s1, the raw milk is refrigerated and transported to a processing plant after milking and stored in a raw material tank.

S2, pumping the milk raw material in the raw material tank into a preheating mechanism, making the milk raw material flow in the inner pipe A for 2-3 minutes, and preheating to 75 ℃.

And S3, pumping the milk raw material into a homogenizing mechanism through a preheating mechanism for homogenizing and refining, and keeping stirring for 5-10 minutes.

S4, after being refined, the milk raw material is pumped into a pasteurization mechanism, heated to 80-85 ℃ for high-temperature sterilization, and kept for 2.5-3 minutes.

S5, pumping the sterilized milk into a cooling mechanism, flowing in the inner tube B for 3-4 minutes, and cooling to 4-6 ℃.

And S6, pumping the cooled milk into a temporary storage mechanism, keeping the temperature at 4-6 ℃, and waiting for transportation or filling.

Compared with the prior art, the invention has reasonable structure and arrangement: 1. the energy of heat exchange water in preheating and cooling can be recycled, so that energy is saved and emission is reduced; 2. in the preheating and cooling processes, the milk keeps a flowing state and is not easy to agglomerate or precipitate.

Drawings

FIG. 1 is a general schematic diagram of the present milk processing system;

FIG. 2 is a schematic structural view of a preheating mechanism;

FIG. 3 is a schematic structural view of a cooling mechanism;

FIG. 4 is a schematic structural view of a homogenizing mechanism;

FIG. 5 is a schematic view of a stirring head structure;

FIG. 6 is a schematic view of the bottom of the mixing drum;

FIG. 7 is a schematic flow diagram of the present milk processing system;

see fig. 1-7, wherein: 1. a raw material tank; 11. a material storage stirring shaft; 2. a preheating mechanism; 21. a preheating tank; 211. a water storage cavity A; 212. an inner wall A; 213. an outer wall A; 214. an interlayer A; 215. an electric heating device; 22. a coil pipe A; 221. an inner tube A; 2211. a feed end A; 2212. a discharge end A; 222. an outer tube A; 2221. a water inlet end A; 2222. a water outlet end A; 3. a homogenizing mechanism; 31. a box body; 311. a homogenizing chamber; 32. a high pressure homogenizing valve; 33. homogenizing and stirring the shaft; 34. a stirring head; 341. a stirring blade; 342. a mixing drum; 3421. a homogenizing hole; 3422. a homogenizing net; 4. a pasteurization mechanism; 41. a heating tank; 42. heating the stirring shaft; 5. a cooling mechanism; 51. a cooling tank; 511. a water storage cavity B; 512. an inner wall B; 513. an outer wall B; 514. an interlayer B; 52. a coil pipe B; 521. an inner tube B; 5211. a feed end B; 5212. a discharge end B; 522. a first outer tube B; 5221. a water inlet end B I; 5222. a water outlet end B I; 523. a second outer tube B; 5231. a water inlet end B II; 5232. a water outlet end B II; 6. a temporary storage mechanism; 61. a temporary storage tank; 611. a thermal insulation layer; 62. temporarily storing the stirring shaft; 7. CIP wiper mechanism.

Detailed Description

The technical solution of the present invention is further illustrated by the following examples. 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 "third" 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 specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral 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.

Example (b):

a milk processing system, comprising:

the device comprises a raw material tank 1, a preheating mechanism 2, a homogenizing mechanism 3, a pasteurization mechanism 4, a cooling mechanism 5 and a temporary storage mechanism 6;

the preheating mechanism 2 comprises a preheating tank 21 and a coil A22, a water storage cavity A211 is arranged in the preheating tank 21, the preheating tank 21 is provided with an inner wall A212 and an outer wall A213, an interlayer A214 is enclosed between the inner wall A212 and the outer wall A213, the coil A22 comprises an inner tube A221 and an outer tube A222, the outer tube A222 is sleeved outside the inner tube A221, the left end of the inner tube A221 is a feeding end A2211, the right end of the inner tube A221 is a discharging end A2212, the right end of the outer tube A222 is a water inlet end A2221, the left end of the outer tube A222 is a water outlet end A2222, the water inlet end A2221 of the outer tube A222 is communicated with the water storage cavity A211, and the coil A22 is arranged in the;

the homogenizing mechanism 3 comprises a box body 31 and a high-pressure homogenizing valve 32, wherein a homogenizing cavity 311 is arranged in the box body 31, the high-pressure homogenizing valve 32 is arranged on the side surface of the box body 31 and is communicated with the homogenizing cavity 311, a homogenizing stirring shaft 33 is rotationally arranged in the homogenizing cavity 311, and a stirring head 34 is arranged at the lower end of the homogenizing stirring shaft 33;

the cooling mechanism 5 comprises a cooling tank 51 and a coil B52, a water storage cavity B511 is arranged in the cooling tank 51, the cooling tank 51 is provided with an inner wall B512 and an outer wall B513, an interlayer B514 is enclosed between the inner wall B512 and the outer wall B513, the coil B52 comprises an inner tube B521, an outer tube B522 and an outer tube B523, the left end of the inner tube B521 is a feeding end B5211, the right end of the inner tube B5212 is a discharging end B5212, the outer tube B522 and the outer tube B523 are sleeved outside the inner tube B521, the outer tube B522 is arranged outside the half section of the inner tube B521 close to the feeding end B5211, one end of the outer tube B522, which is far away from the feeding end B5211, is a water inlet end B5221, the other end of the outer tube B5222 is a water outlet end B5222, the outer tube B523 is arranged outside the half section of the inner tube B521 close to the discharging end B5212, one end B5231 of the outer tube B523 is a water inlet end B5231 and the other end B5232, and the, the coil B52 is wound in the interlayer B514;

the raw material tank 1 is connected with a feeding end A2211 of an inner tube A221, a storage end A2212 of the inner tube A221 is connected with a homogenizing mechanism 3, the homogenizing mechanism 3 is connected with a pasteurization mechanism 4, the pasteurization mechanism 4 is connected with a feeding end B5211 of an inner tube B521, and a discharging end B5212 of the inner tube B521 is connected with a temporary storage mechanism 6;

the water outlet end A2222 of the outer pipe A222 is connected with the cooling tank 51, and the water outlet ends B5222 of the outer pipes B522 are connected with the preheating tank 21.

Specifically, when the milk is processed, the milk raw material stored in the raw material tank 1 is pumped into the preheating mechanism 2 to be preheated; when the milk is preheated, the hot water is stored in the water storage cavity A211, the milk flows into the inner tube A221 from the feeding end A2211 and flows towards the discharging end A2212, meanwhile, the hot water in the water storage cavity A12 flows into the water inlet end A2221 of the outer tube A222 and flows between the outer tube A222 and the inner tube A221 to exchange heat with the milk in the inner tube A221, so that the milk is heated, because the discharging end A2212 of the inner tube A221 corresponds to the water inlet end A2221 of the outer tube A222, and the flowing direction of the milk and the hot water is opposite, the hot water, which is subjected to heat exchange between the milk close to the discharging end A2212 and the milk close to the feeding end A2211, is the milk which is just entering between the outer tube A222 and the inner tube A221 from the water storage cavity A211 and has the highest temperature, and because the milk in the front pipeline exchanges heat with the hot water, the temperature loss is more, the lower the temperature is, the hot water gradually heats the milk, and finally the milk at the discharging end A2212 reaches the temperature of the preheated water and the, and flows from the water outlet end A2222 to the water storage cavity B511 for cooling the pasteurized high-temperature milk; because the milk continuously flows along the coil pipe A22 coiled in the interlayer A215, compared with the milk directly heated in the tank body, the heating effect is more uniform, and the problems of caking and the like are also avoided; the coil A22 is coiled in the interlayer A215 to ensure that the coil A22 has enough length for milk and hot water to flow, the outer wall A214 reduces the loss of hot water in the coil A22, the inner wall A213 and the interlayer A215 reduce the loss of hot water in the water storage cavity A212, and the preheating efficiency is improved.

After the milk preheating step is completed, the milk is pumped into the homogenizing mechanism from the discharge end A2212, enters the high-pressure homogenizing valve 32, is broken into larger protein particles and fat clusters, is sprayed into the homogenizing cavity 311, and is continuously stirred by the homogenizing stirring shaft 33.

After the homogenization step of the milk is completed, the milk is pumped into the pasteurization mechanism 4, heated to above 75 ℃ and pasteurized at high temperature.

After the pasteurization step of the milk is finished, pumping the high-temperature milk into a cooling mechanism 5 for cooling, when the milk is cooled, cold water converted from hot water used in the preheating step is stored in a water storage cavity B511, the milk flows into an inner tube B521 from a feeding end B5211 of the inner tube 21 and flows towards a discharging end B5212, meanwhile, the cold water in a water storage bin flows into a water inlet end B5221 of an outer tube B522, the cold water flows between the outer tube B522 and the inner tube B521 and exchanges heat with the milk in the inner tube B521, and therefore the milk is cooled; because the feed end B5211 corresponds to the water outlet end B5222, the water inlet end B5221 corresponds to the middle of the inner tube B521, and the flowing direction of cold water and milk is opposite, cold water which is close to the middle of the inner tube B521 and exchanges heat with the milk is just entering between the outer tube B522 and the inner tube B521 from the water storage cavity B511, the temperature is lowest, the closer to the feed end B5211 the milk is, because the gradual heat exchange of the milk in the front section pipeline is realized, the more the temperature of the cold water which exchanges heat with the milk is increased, the highest temperature of the cooling water at the water outlet end B5222 is reached, the gradual cooling of the milk from the feed end B5211 to the middle of the inner tube B521 is realized, and when the cold water absorbs the heat of the high-temperature milk, the heat is converted into hot water and flows to the water storage tank A21 from the; when the milk flows to the middle of the inner pipe B521, the temperature is equal to that of cold water, but the milk needs to be further cooled to below room temperature to prevent bacteria from breeding, so the outer pipe B523 is arranged on the outer side of the rear half section of the inner pipe B521, ice water flows in the outer pipe B523, the ice water flows into the water inlet end B5231 from the ice water storage mechanism, flows between the outer pipe B523 and the inner pipe B521, the milk is further cooled, and flows out from the water outlet end B5232, the water outlet end B5231 corresponds to the discharge end B5212, the water outlet end B5232 corresponds to the middle of the inner pipe B521, the flow direction of the ice water and the milk is opposite, and therefore the temperature of the ice water exchanging heat with the milk closer to the discharge end B5212 is lower, and finally the temperature of the milk at the discharge end B5212 is reduced to that of the ice water.

And pumping the cooled milk into the temporary storage mechanism 6 to keep low temperature for packaging and transportation.

And between the preheating step and the cooling step, the water used for heat exchange is recycled, so that the water used for preheating the milk and losing heat is used for cooling the pasteurized high-temperature milk, the water used for cooling the milk and absorbing the heat is used for preheating the milk conveyed from the raw material tank, the heat is recycled, and the effects of energy conservation and emission reduction are realized.

Preferably, a material storage stirring shaft 11 is arranged in the raw material tank 1.

Specifically, when milk is stored in the raw material tank 1, the storage stirring shaft 11 continuously rotates to stir the milk, so that the milk is prevented from being deposited and layered or caked.

Preferably, the pasteurization mechanism 4 comprises a heating tank 41 and a heating stirring shaft 42, and the heating stirring shaft 42 is rotatably arranged in the heating tank 41.

Specifically, when the milk is pasteurized, the heating stirring shaft rotates and stirs the milk in the heating tank, so that the milk keeps flowing and is heated more uniformly.

Preferably, an electric heating device 215 is arranged in the water storage cavity a 211.

Specifically, the electric heating device may heat the hot water flowing into the water storage chamber a211 from the outer pipes B to 522, so that the temperature of the hot water is raised to a temperature required for the preheating step.

Preferably, the stirring head 34 includes a stirring blade 341 and a stirring cylinder 342, the stirring cylinder 342 is sleeved outside the stirring blade 341, the side edge and the bottom of the stirring cylinder 342 are provided with homogenizing holes 3421, and a homogenizing net 3422 is arranged in the homogenizing holes 3421.

Specifically, when the stirring head 34 stirs the milk material, the stirring blade 341 stirs the milk, and the milk is sucked into the stirring cylinder 342 and flows out from the homogenizing holes 3421 at the side and bottom of the stirring cylinder 342 at a high speed, so that the milk material is further refined and homogenized, and the homogenizing net 3422 may also refine the homogenized milk material.

Preferably, the temporary storage mechanism 6 comprises a temporary storage tank 61 and a temporary storage stirring shaft 62, the temporary storage stirring shaft 62 is rotatably arranged in the temporary storage tank 61, and a heat insulation layer 611 is arranged on the tank wall of the temporary storage tank 61.

Specifically, when milk is stored in temporary storage mechanism 6, temporary storage (mixing) shaft 6 rotates the milk in the stirring temporary storage tank, prevents that milk from deposiing the layering or caking, and insulating layer 611 can make milk keep low temperature, prevents that bacterial growing.

Preferably, the stock tank 1, the preheating mechanism 2, the homogenizing mechanism 3, the pasteurization mechanism 4, the cooling mechanism 5 and the temporary storage mechanism 6 are all connected with the CIP cleaning mechanism 7.

Specifically, the CIP cleaning device 7 can transport cleaning solution at a certain temperature through a closed pipeline in a predetermined time without manually disassembling or opening the preheating tank 1, and spray and circulate the inner surfaces of the devices through the cleaning head, thereby achieving the purpose of cleaning.

A milk processing method comprises the following steps:

s1, the raw milk is refrigerated and transported to a processing plant after milking and stored in a raw material tank.

S2, pumping the milk raw material in the raw material tank into a preheating mechanism, making the milk raw material flow in the inner pipe A for 2-3 minutes, and preheating to 75 ℃.

And S3, pumping the milk raw material into a homogenizing mechanism through a preheating mechanism for homogenizing and refining, and keeping stirring for 5-10 minutes.

S4, after being refined, the milk raw material is pumped into a pasteurization mechanism, heated to 80-85 ℃ for high-temperature sterilization, and kept for 2.5-3 minutes.

S5, pumping the sterilized milk into a cooling mechanism, flowing in the inner tube B for 3-4 minutes, and cooling to 4-6 ℃.

And S6, pumping the cooled milk into a temporary storage mechanism, keeping the temperature at 4-6 ℃, and waiting for transportation or filling.

Specifically, the milk raw material can kill 98.6% of bacteria in the milk raw material after the processing steps from S1 to S6, and the shelf life of the milk raw material is 6 days under the storage condition of 7 ℃ after the milk raw material is stored in a sealed manner.

What has been described herein is merely a preferred embodiment of the invention, and the scope of the invention is not limited thereto. Modifications, additions, or substitutions by those skilled in the art to the specific embodiments described herein are intended to be within the scope of the invention.