CN216853672U

CN216853672U - Raw milk processing system

Info

Publication number: CN216853672U
Application number: CN202220646054.5U
Authority: CN
Inventors: 冯永军; 安占国; 赵鹏; 赵鑫
Original assignee: Inner Mongolia Yili Industrial Group Co Ltd
Current assignee: Inner Mongolia Yili Industrial Group Co Ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-07-01
Anticipated expiration: 2032-03-22

Abstract

The utility model relates to a raw milk treatment system, which comprises a raw milk bin, a first precision filter, a second precision filter, a degerming separator, a membrane filtration system and a tank to be canned; the discharge port of the raw milk bin is connected with the feed port of the first precision filter and the feed port of the second precision filter in an on-off mode, the discharge port of the first precision filter and the discharge port of the second precision filter are connected with the feed port of the sterilizing separator in an on-off mode, the discharge port of the sterilizing separator is connected with the feed port of the membrane filtering system in an on-off mode, and the discharge port of the membrane filtering system is connected with the feed port to be canned in an on-off mode. The raw milk treatment system can realize cold sterilization and cold concentration of raw milk, reduce the damage of milk pasteurization treatment on the milk, improve the product quality and reduce the investment and operation cost of a milk production line.

Description

Raw milk processing system

Technical Field

The utility model relates to the technical field of milk production in the dairy industry, in particular to a raw milk processing system.

Background

The existing pure milk production process comprises the following steps: the method comprises the following steps of collecting milk → a raw milk bin → a pasteurizing standardization → a pasteurizing milk bin → a waiting filling → a UHT sterilization → an aseptic tank → a filling, wherein the raw milk can be stored for a long time after dry substances are increased and microorganisms are removed and injected into the pasteurizing milk bin through the pasteurizing standardization, and the raw milk can be used for ingredient production.

However, the longer the milk is heated and the higher the temperature, the more the loss of nutrients therein is severe, mainly vitamins, the most vitamin C, and secondly lactose, if proteins are denatured at high temperature to produce a cooked taste, a burnt taste may also appear. The existing pure milk production process needs twice pasteurization and ultrahigh temperature sterilization, pathogenic bacteria and microorganisms can be removed by pasteurization at 75 ℃ for 15 seconds, and the storage time is increased; however, in the process scheme, the pasteurization of the milk is influenced by heat, the product quality is influenced, and the investment cost is high.

Therefore, the inventor provides a raw milk processing system by virtue of experience and practice of related industries for many years so as to overcome the defects of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a raw milk treatment system which can realize cold sterilization and cold concentration of raw milk, reduce the damage of milk pasteurization on the milk, improve the product quality and reduce the investment and operation cost of a milk production line.

The utility model aims to realize the purpose, and the raw milk treatment system comprises a raw milk bin, a first precision filter, a second precision filter, a degerming separator, a membrane filtration system and a tank to be canned; the discharge port of the raw milk bin is connected with the feed port of the first precision filter and the feed port of the second precision filter in an on-off mode, the discharge port of the first precision filter and the discharge port of the second precision filter are connected with the feed port of the sterilizing separator in an on-off mode, the discharge port of the sterilizing separator is connected with the feed port of the membrane filtering system in an on-off mode, and the discharge port of the membrane filtering system is connected with the feed port to be canned in an on-off mode.

In a preferred embodiment of the present invention, the raw milk outlet of the raw milk bin is connected to a raw milk feeding main pipeline, and the raw milk feeding main pipeline is respectively connected to the feeding port of the first precision filter and the feeding port of the second precision filter through a first feeding branch pipeline and a second feeding branch pipeline; a first material pump and a first pressure sensor are sequentially arranged on the raw milk feeding main pipeline along the material conveying direction, a first feeding switch valve is arranged on the first feeding branch pipeline, and a second feeding switch valve is arranged on the second feeding branch pipeline; the discharge port of the first precision filter is connected with the feed port of the degerming separator through a first discharge branch pipeline, and the discharge port of the second precision filter is connected with the feed port of the degerming separator through a second discharge branch pipeline; and a first discharging switch valve is arranged on the first discharging branch pipeline, and a second discharging switch valve is arranged on the second discharging branch pipeline.

In a preferred embodiment of the present invention, a first frequency converter is connected to the first material pump, a flow meter is further disposed on the raw milk feeding main pipeline and between the first material pump and the first pressure sensor, and the first frequency converter can adjust the opening degree of the first material pump according to a flow value detected by the flow meter.

In a preferred embodiment of the present invention, the bottom of the first precision filter is provided with a first slag discharge port, and a first slag discharge switch valve is arranged on a pipeline communicated with the first slag discharge port; the bottom of the second precision filter is provided with a second slag discharge port, and a pipeline communicated with the second slag discharge port is provided with a second slag discharge switch valve; a first control valve is arranged on the first discharging branch pipeline and between the discharging port of the first precision filter and the first discharging switch valve, a first water inlet pipeline and a first water discharging pipeline are also connected to the first control valve, and a first water inlet switch valve is arranged on the first water inlet pipeline; the first control valve can enable the discharge hole of the first precision filter to be communicated with the first discharge switch valve, or enable the first water inlet switch valve to be communicated with the discharge hole of the first precision filter; a second control valve is arranged on the second discharging branch pipeline and between the discharging port of the second precision filter and the second discharging switch valve, a second water inlet pipeline and a second water drainage pipeline are also connected to the second control valve, and a second water inlet switch valve is arranged on the second water inlet pipeline; the second control valve enables the discharge hole of the second precision filter to be communicated with the second discharge switch valve, or enables the second water inlet switch valve to be communicated with the discharge hole of the second precision filter.

In a preferred embodiment of the utility model, an inlet conveying pipeline is connected to the feed inlet of the sterilizing separator, the outlet end of the first discharging branch pipeline and the outlet end of the second discharging branch pipeline are both connected with the inlet end of the inlet conveying pipeline, and a second material pump is arranged on the inlet conveying pipeline; an outlet conveying pipeline is connected between a discharge port of the degerming separator and a feed port of the membrane filtration system, a third control valve is arranged on the outlet conveying pipeline, and a discharge pipeline is also connected to the third control valve; the third control valve can enable the discharge port of the degerming separator to be communicated with the membrane filtration system or enable the discharge port of the degerming separator to be communicated with the discharge pipeline.

In a preferred embodiment of the present invention, a cleaning liquid cleaning pipeline and a clean water cleaning pipeline are further connected to the raw milk supply main pipeline and between the raw milk bin and the first material pump.

In a preferred embodiment of the present invention, the raw milk processing system further comprises a parallel pipeline, a first end of the parallel pipeline is capable of being connected to the inlet conveying pipeline in an on-off manner and located between the second material pump and the feeding port of the degerming separator, a second end of the parallel pipeline is capable of being connected to the outlet conveying pipeline in an on-off manner and located close to the discharging port of the degerming separator, and a third material pump is disposed on the parallel pipeline.

In a preferred embodiment of the utility model, an inlet switch valve and a second pressure sensor are sequentially arranged on the inlet conveying pipeline and between the first end of the parallel pipeline and the feed inlet of the sterilizing separator along the material conveying direction; the second frequency converter is connected to the second material pump and can adjust the opening of the second material pump according to the pressure detected by the second pressure sensor; a third frequency converter is connected to the third material pump; a backpressure valve is also arranged on the outlet conveying pipeline and between the second end of the parallel pipeline and the third control valve.

In a preferred embodiment of the utility model, the parallel pipeline is also connected with a vent pipeline between the second end and the third material pump, and a vent switch valve is arranged on the vent pipeline, and the height of the vent switch valve is lower than that of the bottom of the degerming separator.

In a preferred embodiment of the present invention, a fourth control valve is disposed on the inlet delivery pipe between the inlet end thereof and the second material pump, the fourth control valve has an eighth port, a ninth port, a tenth port and an eleventh port, the eighth port and the ninth port are connected in series on the inlet delivery pipe, and the ninth port is disposed near the second material pump; the tenth connector is connected with a third water inlet pipeline, a third water inlet switch valve is arranged on the third water inlet pipeline, and the eleventh connector is connected with a third water drainage pipeline; the fourth control valve can communicate the eighth port with the ninth port and the tenth port with the eleventh port, or can communicate the eighth port, the ninth port, and the tenth port with each other.

In a preferred embodiment of the present invention, a fifth control valve is further disposed on the outlet delivery line and between the third control valve and the membrane filtration system, the fifth control valve has a twelfth port, a thirteenth port, a fourteenth port and a fifteenth port, the twelfth port and the thirteenth port are connected in series on the outlet delivery line, the thirteenth port is disposed close to the membrane filtration system, a check valve is further disposed on the outlet delivery line and between the third control valve and the fifth control valve, and the check valve only allows a fluid to flow from the third control valve to the fifth control valve in a one-way manner; the fourteenth interface and the fifteenth interface are connected in series on the inlet conveying pipeline, and the fourteenth interface is arranged close to the fourth control valve; the fifth control valve can enable the twelfth port to be communicated with the thirteenth port and the fourteenth port to be communicated with the fifteenth port, or enable the twelfth port, the thirteenth port and the fifteenth port to be communicated with one another.

In a preferred embodiment of the utility model, a return line is connected between the tank to be filled and the raw milk bin, and a return switch valve is arranged on the return line.

From the above, the raw milk processing system of the utility model replaces the pasteurizer, the separator, the flash evaporation and the homogenizer in the pasteurizing standardized system by the sterilizing separator and the membrane filtration system, realizes cold sterilization by using the precision filter and the sterilizing separator, realizes cold concentration by using the membrane filtration system, directly supplies to-be-canned storage after the raw milk passes through the filter, the sterilizing separator and the membrane filtration system from the raw milk bin, realizes that the pasteurizing standardized system is replaced by the cold processing of the raw milk, not only reduces the thermal damage caused by pasteurizing the milk, reduces the heating intensity of the milk, reduces the loss of nutrient substances, and improves the product quality; and the milk production process flow is simplified under the condition of ensuring the quality, the operation cost of pasteurization production and the loss of feeding, discharging, cleaning and energy consumption can be reduced, and the investment operation cost is lower. In addition, the duplex precision filter is adopted, one filter can be switched to the other filter when being blocked, the normal use of the filtering function is ensured, and the production efficiency is higher.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

FIG. 1: the utility model provides a structural schematic diagram of a raw milk processing system.

FIG. 2: an enlarged view of the first and second precision filters of figure 1.

FIG. 3: the first control valve provided by the utility model adopts a structure diagram of a two-position four-way valve.

FIG. 4: enlarged views of the third, fourth and fifth control valves of figure 1 are shown.

FIG. 5: the structure diagram of the third control valve provided by the utility model when the two-position three-way valve is adopted.

The reference numbers illustrate:

1. a raw milk bin; 11. a raw milk supply main pipeline; PU1, a first material pump; SC1, a first frequency converter; FT, flow meter; PT1, a first pressure sensor;

2. a first precision filter; 21. a first feed branch conduit; 211. a first feed switching valve; 22. a first discharge branch line; 221. a first discharge switching valve; 23. a first slag discharge switch valve; 24. a first control valve; a1, a first interface; a2, a second interface; a3, a third interface; a4, a fourth interface; 25. a first water inlet pipeline; 251. a first water inlet switch valve; 26. a first drain line;

3. a second precision filter; 31. a second feed branch conduit; 311. a second feed switching valve; 32. a second discharge branch line; 321. a second discharge switch valve; 33. a second slag discharge switch valve; 34. a second control valve; 35. a second water inlet pipeline; 351. a second water inlet switch valve; 36. a second drain line;

4. a degerming separator;

41. an inlet delivery line; 411. a fourth control valve; a8, eighth interface; a9, ninth interface; a10, tenth interface; a11, eleventh interface; 412. a third water inlet pipeline; 4121. a third water inlet switch valve; 413. a third drain line; PU2, second material pump; SC2, a second frequency converter; 414. an inlet switching valve; PT2, second pressure sensor;

42. an outlet delivery line; 421. a back pressure valve; 422. a third control valve; a5, a fifth interface; a6, a sixth interface; a7, a seventh interface; 423. a discharge line; 424. a one-way valve;

43. connecting pipelines in parallel; PU3, a third material pump; SC3, third frequency converter; 431. a first T-shaped valve; 432. a second T-shaped valve; 433. emptying the pipeline; 4331. an emptying on-off valve;

44. a fifth control valve; a12, twelfth interface; a13, thirteenth interface; a14, fourteenth interface; a15, a fifteenth interface;

5. a membrane filtration system;

6. and (5) canning.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

As shown in fig. 1 to 5, the present embodiment provides a raw milk processing system, which includes a raw milk bin 1, a first precision filter 2, a second precision filter 3, a degerming separator 4, a membrane filtration system 5, and a tank 6 to be filled, wherein a discharge port of the raw milk bin 1 is connected to both a feed port of the first precision filter 2 and a feed port of the second precision filter 3 in an on-off manner, a discharge port of the first precision filter 2 and a discharge port of the second precision filter 3 are connected to a feed port of the degerming separator 4 in an on-off manner, a discharge port of the degerming separator 4 is connected to a feed port of the membrane filtration system 5 in an on-off manner, and a discharge port of the membrane filtration system 5 is connected to a feed port of the tank 6 in an on-off manner.

Wherein, the raw milk bin 1 is used for cooling and storing the raw milk for subsequent production. The two precision filters are used for filtering the raw milk to prevent impurities in the raw milk from blocking discs of the subsequent degerming separator 4. The sterilizing separator 4 is used for sterilizing and separating raw milk, and can be used for replacing a pasteurizing machine and a separator in a pasteurizing standardized system. The membrane filtration system 5 is used for concentrating raw milk, improving indexes, and can be used for replacing a flash evaporation and a homogenizer in a pasteurization standardized system. The to-be-canned 6 is used for storing the semi-finished product for subsequent continuous production.

When the raw milk is treated, the raw milk is conveyed to the first precision filter 2 or the second precision filter 3 through the raw milk bin 1 to be filtered, the filtered raw milk enters the degerming separator 4 to be degerming and separated, the degerming raw milk enters the membrane filtering system 5 to be concentrated, and finally enters the to-be-canned 6 to be stored. In the whole raw milk treatment process, the first precise filter 2 and the second precise filter 3 are arranged in parallel, and only one of the two filters is used each time; when one of the filters is blocked, the other filter is switched to work.

Therefore, in the raw milk processing system in the embodiment, the sterilizing separator 4 and the membrane filtering system 5 are used for replacing a pasteurizing machine, a separator, a flash evaporation machine and a homogenizer in a pasteurizing standardized system, cold sterilization is realized by using the precision filter and the sterilizing separator 4, cold concentration is realized by using the membrane filtering system 5, and the raw milk bin 1 is directly stored in a tank 6 after passing through the filter, the sterilizing separator 4 and the membrane filtering system 5, so that the pasteurizing standardized system is replaced by cold treatment of the raw milk, thereby not only reducing the thermal damage caused by pasteurizing the milk, reducing the heating intensity of the milk, reducing the loss of nutrient substances and improving the product quality; and the milk production process flow is simplified under the condition of ensuring the quality, the operation cost of pasteurization production and the loss of feeding, discharging, cleaning and energy consumption can be reduced, and the investment operation cost is lower. In addition, the duplex precision filter is adopted, one filter can be switched to the other filter when being blocked, the normal use of the filtering function is ensured, and the production efficiency is higher.

In a specific implementation mode, a raw milk feeding main pipeline 11 is connected to a discharge port of the raw milk bin 1, and the raw milk feeding main pipeline 11 is respectively connected with a feeding port of the first precision filter 2 and a feeding port of the second precision filter 3 through a first feeding branch pipeline 21 and a second feeding branch pipeline 31; a first material pump PU1 and a first pressure sensor PT1 are sequentially provided on the raw milk supply main pipe 11 along the material conveying direction, a first supply switch valve 211 is provided on the first supply branch pipe 21, and a second supply switch valve 311 is provided on the second supply branch pipe 31. The discharge port of the first precision filter 2 is connected with the feed port of the sterilizing separator 4 through a first discharge branch pipeline 22, and the discharge port of the second precision filter 3 is connected with the feed port of the sterilizing separator 4 through a second discharge branch pipeline 32; the first discharge branch line 22 is provided with a first discharge switching valve 221, and the second discharge branch line 32 is provided with a second discharge switching valve 321.

The first material pump PU1 mainly provides a conveying function, and can convey raw milk in the raw milk bin 1 to the filter. Utilize first pressure sensor PT1 can monitor the material pressure in the former milk feed main line 11, indicate the filter that is starting when the pressure value is too big to block up, through controlling corresponding feed switch valve and ejection of compact ooff valve this moment, can automatic switch over to another filter work, guaranteed the normal work of two filters to production efficiency has been guaranteed.

Generally, a first frequency converter SC1 is connected to the first material pump PU1, a flow meter FT is further disposed on the raw milk feeding main pipeline 11 and between the first material pump PU1 and the first pressure sensor PT1, and the first frequency converter SC1 can adjust the opening degree of the first material pump PU1 according to a flow value detected by the flow meter FT, so as to ensure the stability of the flow in the pipeline during operation.

Further, in order to facilitate the realization of the independent water cleaning of each filter, the bottom of the first precision filter 2 is provided with a first slag discharge port, and a pipeline communicated with the first slag discharge port is provided with a first slag discharge switch valve 23; the bottom of the second precision filter 3 is provided with a second slag discharge port, and a pipeline communicated with the second slag discharge port is provided with a second slag discharge switch valve 33. A first control valve 24 is arranged on the first discharging branch pipeline 22 and between the discharging hole of the first precision filter 2 and the first discharging switch valve 221, a first water inlet pipeline 25 and a first water discharging pipeline 26 are also connected to the first control valve 24, and a first water inlet switch valve 251 is arranged on the first water inlet pipeline 25; the first control valve 24 enables the discharge port of the first precision filter 2 to communicate with the first discharge switching valve 221, or enables the first water inlet switching valve 251 to communicate with the discharge port of the first precision filter 2. A second control valve 34 is arranged on the second discharging branch pipeline 32 and between the discharging hole of the second precision filter 3 and the second discharging switch valve 321, a second water inlet pipeline 35 and a second water discharging pipeline 36 are also connected to the second control valve 34, and a second water inlet switch valve 351 is arranged on the second water inlet pipeline 35; the second control valve 34 can communicate the discharge port of the second precision filter 3 with the second discharge switching valve 321, or can communicate the second feed switching valve 351 with the discharge port of the second precision filter 3.

During use, the first water inlet pipeline 25 and the second water inlet pipeline 35 are connected with the corresponding water storage tanks. When raw milk is treated, taking the operation of the first precision filter 2 as an example, the first feeding switch valve 211 and the first discharging switch valve 221 are opened, the first slag discharge switch valve 23, the second feeding switch valve 311, the second discharging switch valve 321, the second slag discharge switch valve 33, the first water inlet switch valve 251 and the second water inlet switch valve 351 are all closed, and the discharge hole of the first precision filter 2 is communicated with the first discharging switch valve 221; the raw milk enters the degerming separator 4 after passing through the first feeding switch valve 211, the first precision filter 2, the first control valve 24 and the first discharging switch valve 221.

When the first precision filter 2 needs to be cleaned by water, the first feeding switch valve 211 and the first discharging switch valve 221 are closed, the first slag discharging switch valve 23 and the first water inlet switch valve 251 are opened, and the first water inlet switch valve 251 is communicated with a discharging hole of the first precision filter 2; clear water enters the first precision filter 2 through the first water inlet switch valve 251, the first control valve 24 and the discharge hole of the first precision filter 2, and is discharged from the first slag discharge switch valve 23 after the interior of the first precision filter is cleaned by water. The operation of the second precision filter 3 and the water cleaning process of the second precision filter 3 are similar and will not be described in detail here. When the raw milk is treated, only one of the two filters works, and when the other filter does not work, water cleaning can be carried out at any time if blockage exists. Both the two filters have the functions of back washing and automatic slag discharging, so that the manual frequent dismantling can be avoided, the operation is simpler, and the production efficiency is higher.

For the first control valve 24, for example, as shown in fig. 2 and 3, a two-position four-way valve (preferably, a pneumatic valve) may be used, the two-position four-way valve having a first port a1, a second port a2, a third port A3 and a fourth port a4, the first port a1 and the second port a2 are connected in series to the first outlet branch pipe 22, the first port a1 is disposed near the first outlet switch valve 221, the third port A3 is connected to the first inlet pipe 25, and the fourth port a4 is connected to the first outlet pipe 26; when the first control valve 24 is in the first operating position: the second port A2 is communicated with the first port A1, so that the discharge port of the first precision filter 2 is communicated with the first discharge switch valve 221; the third port A3 is communicated with the fourth port A4, and residual water in the first water inlet pipeline 25 can be discharged; when the first control valve 24 is in the second operating position: the third port A3 is communicated with the second port A2, so that the first water inlet switch valve 251 is communicated with the discharge port of the first precision filter 2; the first connection port a1 communicates with the fourth connection port a4, and the residual water in the first discharge branch line 22 between the first discharge switching valve 221 and the first control valve 24 can be discharged. The second control valve 34 may employ the same two-position four-way valve structure as the first control valve 24, and will not be described in detail herein. Of course, the first control valve 24 and the second control valve 34 may also adopt other valves as required, and this embodiment is only for illustration.

Further, an inlet conveying pipeline 41 is connected to a feed inlet of the sterilizing separator 4, an outlet end of the first discharging branch pipeline 22 and an outlet end of the second discharging branch pipeline 32 are both connected to an inlet end of the inlet conveying pipeline 41, and a second material pump PU2 is arranged on the inlet conveying pipeline 41; an outlet conveying pipeline 42 is connected between the discharge port of the degerming separator 4 and the feed port of the membrane filtration system 5, a third control valve 422 is arranged on the outlet conveying pipeline 42, and a discharge pipeline 423 is also connected to the third control valve 422; the third control valve 422 can communicate the discharge port of the sterilizing separator 4 with the membrane filtration system 5 or can communicate the discharge port of the sterilizing separator 4 with the discharge line 423.

When the raw milk is processed, the third control valve 422 enables the discharge port of the degerming separator 4 to be communicated with the membrane filtration system 5; the raw milk filtered by one of the ultrafilters is conveyed to the sterilizing separator 4 by the pumping action of the second material pump PU2 through the inlet conveying pipeline 41, and the sterilized raw milk is conveyed to the membrane filtration system 5 through the outlet conveying pipeline 42.

After the raw milk is treated, when the raw milk is not treated, cleaning liquids such as acid, alkali and the like or clean water can be used for cleaning pipelines and equipment of the whole raw milk system according to requirements. A cleaning liquid cleaning pipeline and a clear water cleaning pipeline (not shown in the figure) are generally connected by the raw milk supply main pipeline 11 and between the raw milk bin 1 and the first material pump PU 1; when the cleaning device is used, the cleaning solution cleaning pipeline is connected with the cleaning solution storage tank, and the clear water cleaning pipeline is connected with the clear water storage tank.

When cleaning liquid is needed to be cleaned, the first feeding switch valve 211 and the first discharging switch valve 221, and the second feeding switch valve 311 and the second discharging switch valve 321 are alternately opened, that is, the two precision filters are alternately cleaned, so that the problem that the cleaning effect is influenced due to insufficient flow in one filter when the two precision filters are cleaned simultaneously is avoided; meanwhile, the first control valve 24 is in its first working position (i.e. the discharge port of the first precision filter 2 is communicated with the first discharge on-off valve 221), and the second control valve 34 also makes the discharge port of the second precision filter 3 be communicated with the second discharge on-off valve 321; the third control valve 422 connects the outlet of the sterilizing separator 4 to the discharge line 423. The cleaning liquid is discharged from the discharge pipeline 423 after passing through the first material pump PU1, one of the fine filters, the inlet conveying pipeline 41, the sterilizing separator 4 and the outlet conveying pipeline 42, and the cleaning liquid can be used for cleaning the passing pipelines and equipment.

After the cleaning solution is cleaned, the cleaning solution can be cleaned by using clean water, the path during cleaning is the same as that during cleaning of the cleaning solution, and the clean water is discharged from the clean water cleaning pipeline through the discharge pipeline 423 after passing through the first material pump PU1, one of the precision filters, the inlet conveying pipeline 41, the sterilizing separator 4 and the outlet conveying pipeline 42, so as to clean the passing pipeline and equipment with clean water.

As for the above-mentioned third control valve 422, for example, referring to fig. 4 and 5, a two-position three-way valve (preferably, a pneumatic valve) may be used, which has a fifth port a5, a sixth port a6 and a seventh port a7, the fifth port a5 and the sixth port a6 are connected in series on the outlet delivery pipe 42, the fifth port a5 is disposed near the discharge port of the degerming separator 4, and the seventh port a7 is connected to the discharge pipe 423; when the third control valve 422 is at the first working position, the fifth port A5 is communicated with the sixth port A6, so that the discharge port of the sterilizing separator 4 is communicated with the membrane filtration system 5; when the third control valve 422 is at the second working position, the fifth port A5 is communicated with the seventh port A7, so that the discharge port of the sterilizing separator 4 is communicated with the discharge pipeline 423. Of course, the third control valve 422 may be other types of valves as desired, as long as it has two working positions to achieve the above-mentioned functions.

In actual use, since the sterilizing separator 4 has a centrifugal function and a fluid blocking function, the fluid may not be able to clean the outlet transfer pipe 42 well when water cleaning or cleaning fluid cleaning is performed. In order to improve the cleaning effect of the outlet conveying pipeline 42, the raw milk processing system further comprises a parallel pipeline 43, a first end of the parallel pipeline 43 can be in on-off bypass connection with the inlet conveying pipeline 41 and is located between the second material pump PU2 and the feeding hole of the sterilizing separator 4, a second end of the parallel pipeline 43 can be in on-off bypass connection with the outlet conveying pipeline 42 and is close to the discharging hole of the sterilizing separator 4, and a third material pump PU3 is arranged on the parallel pipeline 43.

Thus, when cleaning liquid or clean water is cleaned, two ends of the parallel pipeline 43 are respectively communicated with the inlet conveying pipeline 41 and the outlet conveying pipeline 42, one part of liquid directly enters the degerming separator 4 and then is discharged through the outlet conveying pipeline 42 and the discharge pipeline 423, and the other part of liquid directly passes through the parallel pipeline 43 and is pumped into the outlet conveying pipeline 42 under the action of the third material pump PU3, so that the outlet conveying pipeline 42 is better cleaned, and the cleaning effect on the outlet conveying pipeline 42 is ensured.

In an alternative embodiment, the parallel line 43 is connected at a first end to the inlet feed line 41 by a first T-valve 431 and at a second end to the outlet feed line 42 by a second T-valve 432; the first T-shaped valve 431 has an input port, an output port and a bypass port, the input port and the output port are connected in series on the input conveying pipeline 41, the output port is arranged close to the sterilizing separator 4, and the bypass port is connected with the first end of the parallel pipeline 43; when the first T-shaped valve 431 is in the first working position, the input port is communicated with the output port; when the first T-valve 431 is in the second operating position, the input port, the output port, and the bypass port are in communication with each other. When the raw milk is processed, the first T-shaped valve 431 is at a first working position; when cleaning solution cleaning or rinsing is required, the first T-shaped valve 431 is in the second working position. The second T-valve 432 is identical in structure to the first T-valve 431, and thus, will not be described again. Of course, the two ends of the parallel connection pipeline 43 may also be connected to the inlet conveying pipeline 41 and the outlet conveying pipeline 42 by other valves, so that the parallel connection pipeline 43 is communicated with the inlet conveying pipeline 41 and the outlet conveying pipeline 42 when cleaning liquid cleaning or clear water cleaning is performed.

Further, an inlet switch valve 414 and a second pressure sensor PT2 are sequentially provided on the inlet conveying line 41 between the first end of the parallel connection line 43 and the feed inlet of the sterilizing separator 4 in the material conveying direction, and the inlet switch valve 414 is a protection valve of the sterilizing separator 4 and is protected to close when the sterilizing separator 4 is out of order or not ready.

Generally, the second material pump PU2 is connected to a second frequency converter SC2, and the second frequency converter SC2 can adjust the opening degree of the second material pump PU2 according to the pressure detected by a second pressure sensor PT2, so as to ensure the stability of the flow rate in the pipeline during operation, ensure the pressure at the inlet end of the sterilizing separator 4 within a set range, and ensure the normal operation of the sterilizing separator 4. And a third frequency converter SC3 is connected to the third material pump PU3 to ensure the stability of the flow in the pipeline during working.

In order to ensure that the sterilizing separator 4 is filled with material during operation, a back pressure valve 421 is provided on the outlet transfer line 42 between the second end of the parallel line 43 and the third control valve 422.

In order to facilitate cleaning, residual liquid in the pipeline is discharged, an emptying pipeline 433 is connected to the pipeline 43 and is positioned between the second end of the pipeline and the third material pump PU3, an emptying switch valve 4331 is arranged on the emptying pipeline 433, and the height of the emptying switch valve 4331 is lower than that of the bottom of the sterilizing separator 4. After the cleaning solution is cleaned or the clean water is cleaned, the emptying switch valve 4331 may be opened, and the residual liquid in the corresponding pipelines and equipment (such as the parallel pipeline 43, the degerming separator 4, the partial inlet conveying pipeline 41 and the partial outlet conveying pipeline 42) above the position of the emptying switch valve 4331 may be discharged.

When the sterilizing separator 4 is cleaned with clean water through the clean water cleaning pipeline, the clean water is soft water and may affect the sterilizing separator 4, and the sterilizing separator 4 is further washed with pure water for better protection of the sterilizing separator 4. Specifically, a fourth control valve 411 is arranged on the inlet conveying pipeline 41 and between the inlet end of the inlet conveying pipeline and the second material pump PU2, the fourth control valve 411 has an eighth interface A8, a ninth interface a9, a tenth interface a10 and an eleventh interface a11, the eighth interface A8 and the ninth interface a9 are connected in series on the inlet conveying pipeline 41, and the ninth interface a9 is arranged close to the second material pump PU 2; the tenth port a10 is connected to the third water inlet pipe 412, a third water inlet switch valve 4121 is provided on the third water inlet pipe 412, and the eleventh port a11 is connected to the third water discharge pipe 413; the fourth control valve 411 may enable the eighth port A8 to communicate with the ninth port a9 and the tenth port a10 to communicate with the eleventh port a11, or may enable the eighth port A8, the ninth port a9, and the tenth port a10 to communicate with each other (i.e., the eighth port A8 communicates with the ninth port a9 and the tenth port a10 communicates with the eleventh port a11 when the fourth control valve 411 is in the first operating position, and the eighth port A8, the ninth port a9, and the tenth port a10 communicate with each other when the fourth control valve 411 is in the second operating position).

In use, the third inlet line 412 is connected to a corresponding pure water tank. When the raw milk is processed, the fourth control valve 411 is at the first working position, and the residual water in the third water inlet pipe 412 can be discharged. After the raw milk is treated, when the raw milk needs to be cleaned by using a cleaning solution or the clean water is used for cleaning the pipeline, the fourth control valve 411 is still at the first working position. After the degerming separator 4 is cleaned by clean water through the clean water cleaning pipeline, the first discharging switch valve 221 and the second discharging switch valve 321 can be both closed, the fourth control valve 411 is in the second working position, the parallel pipeline 43 is not submerged, and the third control valve 422 enables the discharge port of the degerming separator 4 to be communicated with the discharge pipeline 423; the pure water enters the sterilizing separator 4 through the fourth control valve 411, the second material pump PU2 and the inlet switch valve 414, and is discharged through the discharge pipeline 423 after passing through the outlet conveying pipeline 42, so that the pure water filling protection of the sterilizing separator 4 is realized.

In addition, when there is a possibility of material breakage in the sterilizing separator 4, the operation is not stopped, and the sterilizing separator 4 is still kept idling, and when the internal temperature is too high during idling, the sterilizing separator 4 is separately washed with pure water by using the third water inlet pipe 412 and the fourth control valve 411 to cool the sterilizing separator 4, thereby preventing damage to the equipment due to too high temperature.

Further, when the degerming separator 4 is cleaned with pure water alone, the eighth port A8, the ninth port a9, and the tenth port a10 of the fourth control valve 411 are connected to each other, and pure water also enters the portion of the inlet feed line 41 between the eighth port A8 and the inlet end of the inlet feed line 41, which may generate a large pressure on the first discharge switch valve 221 and the second discharge switch valve 321, and may damage the first discharge switch valve 221 and the second discharge switch valve 321. In order to enable the bacteria removing separator 4 to be separated when pure water is separately cleaned and to achieve a better protection effect on each component, a fifth control valve 44 is further arranged on the outlet conveying pipeline 42 and between the third control valve 422 and the membrane filtration system 5, the fifth control valve 44 is provided with a twelfth interface A12, a thirteenth interface A13, a fourteenth interface A14 and a fifteenth interface A15, the twelfth interface A12 and the thirteenth interface A13 are connected in series on the outlet conveying pipeline 42, the thirteenth interface A13 is arranged close to the membrane filtration system 5, a check valve 424 is further arranged on the outlet conveying pipeline 42 and between the third control valve 422 and the fifth control valve 44, and the check valve 424 only allows the fluid to flow from the third control valve 422 to the fifth control valve 44 in a one-way manner; the fourteenth connection a14 and the fifteenth connection a15 are connected in series on the inlet delivery line 41, and the fourteenth connection a14 is provided near the fourth control valve 411 (the position of the fifth control valve 44 on the inlet delivery line 41 is between the inlet end of the inlet delivery line 41 and the fourth control valve 411).

The fifth control valve 44 may enable the twelfth port a12 to communicate with the thirteenth port a13 and the fourteenth port a14 to communicate with the fifteenth port a15, or may enable the twelfth port a12, the thirteenth port a13, and the fifteenth port a15 to communicate with one another (i.e., the twelfth port a12 may communicate with the thirteenth port a13 and the fourteenth port a14 may communicate with the fifteenth port a15 when the fifth control valve 44 is in the first operating position, and the twelfth port a12, the thirteenth port a13, and the fifteenth port a15 may communicate with one another when the fifth control valve 44 is in the second operating position).

When the raw milk is treated, needs to be cleaned by cleaning liquid or needs to be cleaned by clean water through a clean water cleaning pipeline, the fifth control valve 44 is in the first working position. When raw milk is treated, the raw milk filtered by one of the ultrafilters passes through a fifteenth interface A15 and a fourteenth interface A14, then passes through a fourth control valve 411, a second material pump PU2, a first T-shaped valve 431 and an inlet switch valve 414, and then enters a degerming separator 4, and the degerming raw milk passes through a second T-shaped valve 432, a back pressure valve 421, a third control valve 422, a twelfth interface A12 and a thirteenth interface A13 and then enters a membrane filtration system 5. When the cleaning liquid or the clean water is cleaned, after passing through one of the precision filters, a part of the cleaning liquid or the clean water passes through the fifteenth interface a15, the fourteenth interface a14, the fourth control valve 411 and the second material pump PU2, enters the degerming separator 4 through the inlet switch valve 414 and then enters the outlet conveying pipeline 42, and the other part of the cleaning liquid or the clean water directly enters the outlet conveying pipeline 42 through the parallel pipeline 43 and finally is discharged through the discharge pipeline 423.

When the sterilizing separator 4 is to be separately rinsed with pure water, the fifth control valve 44 is in the second operating position. Since only the twelfth port a12, the thirteenth port a13 and the fifteenth port a15 of the fifth control valve 44 are communicated with each other and not communicated with the fourteenth port a14, pure water is delivered to the fourteenth port a14 and is stopped, and does not continuously flow to the inlet end portion of the inlet delivery pipeline 41, and the first discharging switch valve 221 and the second discharging switch valve 321 are not affected; after passing through the tenth connection a10 and the ninth connection a9 of the fourth control valve 411, the pure water is pumped to the degerming separator 4 by the second material pump PU2, and then discharged by the discharge line 423. Carry out the process that pure water washed alone to degerming separating centrifuge 4, degerming separating centrifuge 4 separates with two precision filter and membrane filtration system 5, is independently come out, can wash alone degerming separating centrifuge 4, uses safelyr.

Normally, during the start-up of the sterilizing separator 4, the fifth control valve 44 is also set to the second operating position, so that the sterilizing separator 4 is separated out separately.

Further, a return line (not shown in the figure) is connected between the tank 6 to be filled and the raw milk bin 1, and a return switch valve is provided on the return line. The return line is mainly used for the conditions that the power is off, the equipment fails for more than 6 hours, the power cannot be started for production and the like in extreme conditions, and materials are returned to the raw milk bin 1 from the tank 6 to be canned for cooling storage or external adjustment.

For each of the above-mentioned switch valves, any existing switch valve may be used as needed as long as the two states of opening and closing can be achieved, and the present invention is not limited thereto.

In summary, the raw milk processing system in this embodiment is a cold sterilization and concentration processing system for raw milk processing, and can be applied to the production of all products, and the duplex precision filter, the sterilization separator 4 and the membrane filtration system 5 are applied to the milk production process, so that the cold sterilization and cold concentration of the raw milk are realized, the pasteurization standardized system and the pasteurized milk bin system are reduced, and the damage of heating the raw milk through the pasteurization standardized system (pasteurization, flash evaporation, separator and homogenizer) is eliminated. The process for treating raw milk in the embodiment is optimized as follows: raw milk → filtration (60 mesh) → temporary storage (1-6 ℃) of a raw milk bin 1 → filtration (80 mesh) → a sterilizing separator 4 → membrane filtration → batching → can filling 6 → UHT sterilization → aseptic temporary storage → filling; the production process flow of the milk is simplified under the condition of ensuring the quality, the raw milk circulation time is shortened (the circulation time is shortened to 6 hours to complete the production), and the pasteurization heating is removed, so that the aims of improving the product quality and reducing the investment and operation cost of a milk production line are fulfilled (the cost of a single ton is reduced by 4 yuan/ton through accounting, and the production cost is lower).

Meanwhile, the duplex precision filters are adopted, whether the filters are blocked or not is judged through pressure detection, automatic switching of the two precision filters can be realized, each precision filter has the functions of automatic slag discharge and back flushing, and manual frequent dismantling is avoided. The degerming separator 4 should lengthen and increase its slag-off cycle in the production run, reduce the loss of material; the cleaning flow is 1-1.2 times of the rated capacity, the cleaning time can be properly increased according to the cleaning effect of the sterilizing separator 4, and the peculiar smell generated due to incomplete cleaning is prevented; the degerming separator 4 also has an independent pure water washing function, reduces the residue of milk-water mixture and reduces the temperature in idle running. The whole raw milk processing system is also provided with a recovery line (namely a return pipeline), and when the milk production materials to be canned 6 break down suddenly, the raw milk processing system can be returned to the raw milk bin 1 and applied to the production of other items.

The above are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the utility model should fall within the protection scope of the utility model.

Claims

1. A raw milk treatment system is characterized by comprising a raw milk bin, a first precision filter, a second precision filter, a degerming separator, a membrane filtration system and a tank to be canned;

the raw milk bin is characterized in that a discharge hole of the raw milk bin is connected with a feed hole of the first precision filter and a feed hole of the second precision filter in an on-off mode, the discharge hole of the first precision filter and the discharge hole of the second precision filter are connected with a feed hole of the sterilizing separator in an on-off mode, the discharge hole of the sterilizing separator is connected with a feed hole of the membrane filtering system in an on-off mode, and the discharge hole of the membrane filtering system is connected with a feed hole to be canned in an on-off mode.

2. The raw milk processing system of claim 1,

a discharge port of the raw milk bin is connected with a raw milk feeding main pipeline, and the raw milk feeding main pipeline is respectively connected with a feed port of the first precision filter and a feed port of the second precision filter through a first feeding branch pipeline and a second feeding branch pipeline; a first material pump and a first pressure sensor are sequentially arranged on the raw milk feeding main pipeline along the material conveying direction, a first feeding switch valve is arranged on the first feeding branch pipeline, and a second feeding switch valve is arranged on the second feeding branch pipeline;

the discharge port of the first precision filter is connected with the feed port of the degerming separator through a first discharge branch pipeline, and the discharge port of the second precision filter is connected with the feed port of the degerming separator through a second discharge branch pipeline; and a first discharging switch valve is arranged on the first discharging branch pipeline, and a second discharging switch valve is arranged on the second discharging branch pipeline.

3. The raw milk processing system of claim 2,

the first material pump is connected with a first frequency converter, a flow meter is further arranged on the raw milk feeding main pipeline and between the first material pump and the first pressure sensor, and the first frequency converter can adjust the opening degree of the first material pump according to a flow value detected by the flow meter.

4. The raw milk processing system of claim 2,

the bottom of the first precision filter is provided with a first slag discharge port, and a pipeline communicated with the first slag discharge port is provided with a first slag discharge switch valve; the bottom of the second precision filter is provided with a second slag discharge port, and a pipeline communicated with the second slag discharge port is provided with a second slag discharge switch valve;

a first control valve is arranged on the first discharging branch pipeline and between the discharge port of the first precision filter and the first discharging switch valve, the first control valve is also connected with a first water inlet pipeline and a first water discharge pipeline, and a first water inlet switch valve is arranged on the first water inlet pipeline; the first control valve can enable the discharge hole of the first precision filter to be communicated with the first discharge switch valve, or enable the first water inlet switch valve to be communicated with the discharge hole of the first precision filter;

a second control valve is arranged on the second discharging branch pipeline and between the discharging hole of the second precision filter and the second discharging switch valve, a second water inlet pipeline and a second water discharging pipeline are also connected to the second control valve, and a second water inlet switch valve is arranged on the second water inlet pipeline; the second control valve can enable the discharge hole of the second precision filter to be communicated with the second discharge switch valve, or enable the second water inlet switch valve to be communicated with the discharge hole of the second precision filter.

5. The raw milk processing system of claim 2,

an inlet conveying pipeline is connected to a feed inlet of the degerming separator, an outlet end of the first discharging branch pipeline and an outlet end of the second discharging branch pipeline are both connected with an inlet end of the inlet conveying pipeline, and a second material pump is arranged on the inlet conveying pipeline; an outlet conveying pipeline is connected between a discharge port of the sterilizing separator and a feed port of the membrane filtering system, a third control valve is arranged on the outlet conveying pipeline, and a discharge pipeline is also connected to the third control valve; the third control valve can enable the discharge port of the degerming separator to be communicated with the membrane filtration system, or enable the discharge port of the degerming separator to be communicated with the discharge pipeline.

6. The raw milk processing system of claim 5,

and a cleaning liquid cleaning pipeline and a clear water cleaning pipeline are also connected beside the raw milk supply main pipeline and between the raw milk bin and the first material pump.

7. The raw milk processing system of claim 5,

the raw milk processing system further comprises a parallel pipeline, a first end of the parallel pipeline can be in on-off bypass connection on the inlet conveying pipeline and is located between the second material pump and the feed inlet of the degerming separator, a second end of the parallel pipeline can be in on-off bypass connection on the outlet conveying pipeline and is close to the position of the discharge outlet of the degerming separator, and a third material pump is arranged on the parallel pipeline.

8. The raw milk processing system of claim 7,

an inlet switch valve and a second pressure sensor are sequentially arranged on the inlet conveying pipeline and between the first end of the parallel pipeline and the feed inlet of the degerming separator along the material conveying direction;

the second material pump is connected with a second frequency converter, and the second frequency converter can adjust the opening of the second material pump according to the pressure detected by the second pressure sensor; a third frequency converter is connected to the third material pump; and a back pressure valve is also arranged on the outlet conveying pipeline and between the second end of the parallel pipeline and the third control valve.

9. The raw milk processing system of claim 7,

an emptying pipeline is further connected to the parallel connection pipeline and located between the second end of the parallel connection pipeline and the third material pump, an emptying switch valve is arranged on the emptying pipeline, and the position height of the emptying switch valve is lower than the position height of the bottom of the degerming separator.

10. The raw milk processing system of claim 5,

a fourth control valve is arranged on the inlet conveying pipeline and between the inlet end of the inlet conveying pipeline and the second material pump, the fourth control valve is provided with an eighth interface, a ninth interface, a tenth interface and an eleventh interface, the eighth interface and the ninth interface are connected in series on the inlet conveying pipeline, and the ninth interface is arranged close to the second material pump; the tenth connector is connected with a third water inlet pipeline, a third water inlet switch valve is arranged on the third water inlet pipeline, and the eleventh connector is connected with a third water drainage pipeline; the fourth control valve may communicate the eighth port with the ninth port and the tenth port with the eleventh port, or may communicate the eighth port, the ninth port, and the tenth port with each other.

11. The raw milk processing system of claim 10,

a fifth control valve is further arranged on the outlet conveying pipeline and between the third control valve and the membrane filtration system, the fifth control valve is provided with a twelfth interface, a thirteenth interface, a fourteenth interface and a fifteenth interface, the twelfth interface and the thirteenth interface are connected in series on the outlet conveying pipeline, the thirteenth interface is arranged close to the membrane filtration system, a one-way valve is further arranged on the outlet conveying pipeline and between the third control valve and the fifth control valve, and the one-way valve only allows the fluid to flow from the third control valve to the fifth control valve in one way; the fourteenth interface and the fifteenth interface are connected in series on the inlet delivery pipeline, and the fourteenth interface is arranged close to the fourth control valve;

the fifth control valve may communicate the twelfth port with the thirteenth port and the fourteenth port with the fifteenth port, or may communicate the twelfth port, the thirteenth port, and the fifteenth port with each other.

12. The raw milk processing system of claim 1,

a return pipeline is connected between the tank to be filled and the raw milk bin, and a return switch valve is arranged on the return pipeline.