CN219981782U

CN219981782U - Skimmed milk separation system

Info

Publication number: CN219981782U
Application number: CN202321675109.6U
Authority: CN
Inventors: 李云峰; 巴根纳; 高文俊
Original assignee: Inner Mongolia Yili Industrial Group Co Ltd
Current assignee: Inner Mongolia Yili Industrial Group Co Ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-11-10
Anticipated expiration: 2033-06-28

Abstract

The utility model provides a skim milk separation system, comprising: the device comprises a separator, a buffer tank, a pump, a skim milk output pipeline, a raw milk feeding pipeline, a fat detector and a skim milk conveying change-over switch, wherein the raw milk feeding pipeline is used for conveying raw milk to the separator, and the skim milk output pipeline is connected with a skim milk conveying port of the separator; the skim milk conveying switch is arranged on the skim milk output pipeline and is connected with the buffer tank, the fat detector is arranged on the skim milk output pipeline, and the skim milk conveying switch can control the skim milk to be output outwards along the skim milk output pipeline or be conveyed to the buffer tank in a switching manner; the pump is respectively connected with the buffer tank and the raw milk feeding pipeline, so that fluid in the buffer tank is driven to flow into the raw milk feeding pipeline, and the technical problem that the fat content of the skimmed milk is easy to fluctuate in the separation production process is solved.

Description

Skimmed milk separation system

Technical Field

The utility model relates to the technical field of dairy processing equipment, in particular to a skim milk separation system.

Background

In the deep processing of milk, skim milk is often used to extract trace proteins such as lactoferrin and immunoglobulin from milk. The extraction process generally uses a chromatographic technique, wherein the fat content of the skim milk in the chromatographic technique is required to be as low as possible, and the fat content in the skim milk is required to be below 0.1%, so that the blockage of chromatographic column resin filler is avoided, the production time is shortened, and the production efficiency is reduced. However, the separator is liable to fluctuation in the feed flow rate, feed pressure during the just-fed process, and fluctuation in the fat content in the skim milk during the deslagging of the separator.

Disclosure of Invention

The utility model aims to provide a skim milk separation system, which aims to solve the technical problem that the fat content of skim milk is easy to fluctuate in the separation production process.

The above object of the present utility model can be achieved by the following technical solutions:

the present utility model provides a skim milk separation system comprising: the device comprises a separator, a buffer tank, a pump, a skim milk output pipeline, a raw milk feeding pipeline, a fat detector and a skim milk conveying change-over switch, wherein the raw milk feeding pipeline is used for conveying raw milk to the separator, and the skim milk output pipeline is connected with a skim milk conveying port of the separator;

the skim milk conveying switch is arranged on the skim milk output pipeline and is connected with the buffer tank, the fat detector is arranged on the skim milk output pipeline, and the skim milk conveying switch can control the skim milk to be output outwards along the skim milk output pipeline or be conveyed to the buffer tank in a switching manner;

the pump is connected with the buffer tank and the raw milk feeding pipeline respectively so as to drive the fluid in the buffer tank to flow into the raw milk feeding pipeline.

In a preferred embodiment, an eighth valve is arranged between the pump and the buffer tank, a ninth valve is arranged at the skim milk inlet of the buffer tank, and the eighth valve is connected with the ninth valve through a pipeline.

In a preferred embodiment, the outlet of the pump is provided with a first flow meter.

In a preferred embodiment, the buffer tank is provided with a high level switch and a low level switch.

In a preferred embodiment, the skim milk output pipeline comprises a skim milk output main circuit, a first branch circuit and a second branch circuit, wherein the first branch circuit and the second branch circuit are connected to the skim milk output main circuit in parallel, and the first branch circuit is connected with a skim milk inlet of the buffer tank; the fat detector is arranged on the skimmed milk output main path; the skimmed milk conveying change-over switch comprises a first valve arranged on the first branch and a second valve arranged on the second branch.

In a preferred embodiment, the first branch is provided with an eleventh valve, which is provided with a pure water supply line.

In a preferred embodiment, the outlet of the pump is connected with a flushing line connected with the top of the buffer tank, the flushing line being provided with a fourth valve.

In a preferred embodiment, a sixth valve is arranged between the outlet of the pump and the raw milk feed line, said sixth valve being provided with a discharge opening.

In a preferred embodiment, the pipeline between the skim milk conveying switch and the buffer tank is provided with a cooling device, and the pipeline between the buffer tank and the raw milk feeding pipeline is provided with a heating device.

In a preferred embodiment, the raw milk feed line is provided with a second flowmeter and a fifth valve.

The utility model has the characteristics and advantages that:

raw milk is input into a separator, the separator performs separation treatment, the separated skimmed milk is output through a skimmed milk output pipeline, a fat detector detects the fat content of the separated skimmed milk, and if the fat content meets the requirement, the separated skimmed milk is conveyed to downstream equipment; if the fat content is too high, the skim milk conveying change-over switch is switched to convey the skim milk to the buffer tank, so that the fat content of the skim milk output to downstream equipment is ensured to meet the requirement.

The skim milk conveyed into the buffer tank is conveyed to the raw milk conveying pipeline through the pump and conveyed into the separator again for separation treatment, so that the fat content of the skim milk is reduced, the raw material is fully treated, and the separation treatment efficiency is improved. The skim milk separation system solves the technical problem that the fat content in the skim milk is easy to fluctuate, and is beneficial to continuous and high-efficiency operation of downstream equipment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a skim milk separation system provided by the present utility model;

FIG. 2 is a schematic diagram of the operation of the skim milk separation system provided by the present utility model;

fig. 3 is a schematic structural view of a skim milk buffer unit and a rinse unit in the skim milk separation system according to the present utility model.

Reference numerals illustrate:

1. a first valve; 2. A second valve;

3. a third valve; 6. A sixth valve; 61. A discharge port;

4. a fourth valve;

5. a fifth valve;

7. a seventh valve;

8. an eighth valve; 9. A ninth valve;

10. a tenth valve; 11. An eleventh valve;

20. separating machine; 201. A cream output line; 21. A fat detector;

30. a buffer tank; 31. a high liquid level switch; 32. a low level switch; 33. a liquid level gauge;

34. a pump;

41. a first flowmeter; 42. A second flowmeter;

50. a cooling device; 51. An ice water pipeline;

70. a temperature raising device; 71. A hot water pipeline;

80. a skim milk output line; 83. a main skimmed milk output path; 81. a first branch; 82. a second branch;

91. flushing the pipeline;

92. pure water input pipeline;

93. raw milk is sent into the pipeline.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model provides a skim milk separation system, as shown in fig. 1 and 2, comprising: the raw milk feeding device comprises a separator 20, a buffer tank 30, a pump 34, a skim milk output pipeline 80, a raw milk feeding pipeline 93, a fat detector 21 and a skim milk conveying switch, wherein the raw milk feeding pipeline 93 is used for conveying raw milk to the separator 20, and the skim milk output pipeline 80 is connected with a skim milk conveying port of the separator 20; the skim milk conveying switch is arranged on the skim milk output pipeline 80 and is connected with the buffer tank 30, the fat detector 21 is arranged on the skim milk output pipeline 80, and the skim milk conveying switch can control the skim milk to be output outwards along the skim milk output pipeline 80 or be conveyed to the buffer tank 30 in a switching manner; the pump 34 is connected to the buffer tank 30 and the raw milk feed line 93, respectively, to drive the fluid in the buffer tank 30 into the raw milk feed line 93.

Raw milk is input into a separator 20, the separator 20 performs separation treatment, the separated skimmed milk is output through a skimmed milk output pipeline 80, a fat detector 21 detects the fat content of the separated skimmed milk, and if the fat content meets the requirement, the separated skimmed milk is conveyed to downstream equipment; if the fat content is too high, the skim milk delivery switch is switched to deliver the skim milk to the buffer tank 30, thereby ensuring that the fat content of the skim milk delivered to downstream equipment meets the requirements.

The skim milk delivered to the buffer tank 30 is delivered to the raw milk delivery pipe 93 by the pump 34 and delivered to the separator 20 again for separation treatment, so that the fat content of the skim milk is reduced, the raw material is fully treated, and the separation treatment efficiency is improved. The skim milk separation system solves the technical problem that the fat content in the skim milk is easy to fluctuate, and is beneficial to continuous and high-efficiency operation of downstream equipment.

In one embodiment, as shown in fig. 1 and 3, an eighth valve 8 is provided between the pump 34 and the buffer tank 30, the skim milk inlet of the buffer tank 30 is provided with a ninth valve 9, and the eighth valve 8 is connected to the ninth valve 9 through a pipe. After the eighth valve 8 and the ninth valve 9 are opened and communicated, the buffer balance tank can be short-circuited, so that the skimmed milk does not enter the buffer tank 30, but directly flows to the pump 34 through the eighth valve 8 and the ninth valve 9, the milk is not detained in a flowing state, the risk of microorganism growth is reduced, the fat content is gradually reduced to a target value in the circulating process, and the material loss is small.

Further, the outlet of the pump 34 is provided with a first flowmeter 41 to detect the flow rate of the skim milk in the buffer tank 30 returned to the separator 20 through the pump 34, so as to control the flow rate, thereby being beneficial to improving the working stability of the separator 20. As shown in fig. 3, the outlet of the pump 34 is further provided with a seventh valve 7, the seventh valve 7 being a one-way valve. In an embodiment, the buffer tank 30 is provided with a high level switch 31 and a low level switch 32 to detect the level of skimmed milk fed into the buffer tank 30.

As shown in fig. 1, the skim milk output pipe 80 includes a skim milk output main path, a first branch 81, and a second branch 82, the first branch 81 and the second branch 82 being connected in parallel to the skim milk output main path, the first branch 81 being connected to the skim milk inlet of the buffer tank 30; the fat detector 21 is arranged in the skimmed milk output main path; the skim milk conveying switch comprises a first valve 1 arranged on a first branch 81 and a second valve 2 arranged on a second branch 82. The fat detector 21 detects fat content on-line at the skimmed milk outlet of the separator 20 and controls the flow of skimmed milk to either the first branch 81 or the second branch 82 via the first valve 1 and the second valve 2. The fat detector 21, the first valve 1 and the second valve 2 cooperate to enable on-line detection and on-line control.

Further, the first branch 81 is provided with an eleventh valve 11, and the eleventh valve 11 is provided with a pure water input line 92. Pure water is introduced into the first branch 81 through the eleventh valve 11, and the pipe can be cleaned. As shown in fig. 1, a tenth valve 10 is disposed on the pure water input pipeline 92, the tenth valve 10 is a top water valve, and the tenth valve 10 and the eleventh valve 11 form a pure water top material valve group.

In one embodiment, the outlet of the pump 34 is connected to a flushing line 91, the flushing line 91 is connected to the top of the buffer tank 30, and the flushing line 91 is provided with a fourth valve 4. Pure water flows to the top of the buffer tank 30 through the pump 34 and the fourth valve 4 and the flushing line 91, and flushing of the buffer tank 30 can be achieved through spraying.

As shown in fig. 1, a sixth valve 6 is provided between the outlet of the pump 34 and the raw milk feeding line 93, the sixth valve 6 is provided with a discharge port 61, the skim milk in the buffer tank 30 flows through the sixth valve 6 by the driving of the pump 34, and water in the line fed for the first time can be discharged through the discharge port 61. Specifically, the sixth valve 6 is a reversing valve. A third valve 3 is arranged between the outlet of the pump 34 and the sixth valve 6, the third valve 3 is connected in parallel with the fourth valve 4, and the skim milk in the buffer tank 30 flows back to the raw milk feeding pipeline 93 through the pump 34, the third valve 3 and the sixth valve 6.

In the water of one embodiment, the cooling device 50 is arranged in the pipeline between the skimmed milk conveying switch and the buffer tank 30, the heating device 70 is arranged in the pipeline between the buffer tank 30 and the raw milk conveying pipeline 93, so that the skimmed milk is conveyed to the buffer tank 30 after being cooled, and the skimmed milk conveyed from the buffer tank 30 is conveyed back to the raw milk conveying pipeline 93 after being heated, thereby being beneficial to storing the skimmed milk in the buffer tank 30.

Further, the cooling device 50 includes an ice water pipeline 51, and the ice water exchanges heat with the skim milk flowing through the cooling device 50 when flowing through the cooling device 50, so as to cool the skim milk; the warming device 70 includes a hot water pipe 71, and the hot water exchanges heat with the skim milk flowing through the warming device 70 when flowing through the warming device 70, so as to lower the temperature of the skim milk. In the case where skim milk does not flow through the buffer tank 30, the cooling device 50 and the warming device 70 may be omitted, or the cooling device 50 and the warming device 70 may not be operated. The heating means 70 may employ a heating plate. The cooling device 50 may cool the milk to below 8 ℃; the temperature raising device 70 then heats the milk on-line to 50-55 c after the pump 34 of the surge tank 30, followed by on-line backfilling.

In the water of an embodiment, the raw milk feeding pipeline 93 is provided with the second flowmeter 42 and the fifth valve 5, the second flowmeter 42 can detect the raw milk flow in the raw milk feeding pipeline 93 so as to control the raw milk flow, the raw milk flow in the raw milk feeding pipeline 93 and the flow of the skimmed milk input through the buffer tank 30 are regulated and controlled through the cooperation of the first flowmeter 41 and the second flowmeter 42, the proportion of the raw milk and the skimmed milk is regulated and controlled, and the control of the fat content in the milk input into the separator 20 is facilitated, and the separation effect is facilitated to be ensured.

The skimmed milk in the buffer tank 30 is delivered to the separator 20, and at the same time, the raw milk delivery pipeline 93 can be controlled by the fifth valve 5 to stop feeding, and the 'separate feeding' is adopted to more rapidly degrease the unqualified skimmed milk in the buffer tank 30, so as to prevent the problem of microorganism growth caused by too long milk residence time in the buffer tank 30.

Preferably, the raw milk fed into the pipeline 93 via raw milk is controlled at a temperature of 50-55deg.C and a pressure of > 3bar; the flow rate of raw milk fed into the pipe 93 is controlled to a design flow rate by the second flowmeter 42.

The separator 20 comprises a cream output pipeline 201, the separator 20 centrifugally separates raw milk into light phase, the light phase is cream, and the cream can be output outwards through the cream output pipeline 201 according to the process requirement, and can be stored after being optionally cooled or backfilled on line.

The separator 20 can adopt a standard single machine, the third valve 3 is a backfill valve, and the fourth valve 4 is a tank cleaning valve; the second flowmeter 42 is raw milk to control the flowmeter. The buffer tank 30 includes a tank body, a manhole, a respiratory cap, and the like, and is further provided with a liquid level gauge 33LC. The pump 34 may be a sanitary pump 34 such as a centrifugal pump 34, a rotor pump 34, or a twin screw pump 34; if the cream is to be made into cream products, the rotor pump 34 and the twin-screw pump 34 are preferable. The skim milk separation system provided by the utility model accords with the food sanitation design, and the gold contacted with the product adopts 304L or more stainless steel, the sealing material adopts EPDM, silica gel and Teflon, so that the sanitation and safety of the food are greatly improved. Preferably, the PLC is adopted for full-automatic control, so that the automation, stability, reliability and safety of the system are improved.

The skim milk separation system shown in fig. 1 can be operated in several modes and switched by means of the eighth valve 8 and the ninth valve 9.

The working steps of the working mode I comprise:

(1) The skim milk separated by the separator 20 is detected for fat content by the fat detector 21;

(2) If the fat content is less than 0.1%, the process is qualified, the second valve 2 is opened, the first valve 1 is closed, and the skimmed milk is conveyed to downstream equipment through a skimmed milk output pipeline 80;

(3) If the fat content is unqualified, the first valve 1 is opened, the second valve 2 is closed, and the skimmed milk passes through the cooling device 50 and enters the buffer tank 30 through the ninth valve 9;

(4) After the buffer tank 30 reaches the liquid level, the temperature is raised to 50-55 ℃ through the eighth valve 8, the pump 34 and the seventh valve 7 and the temperature raising device 70;

(5) After the rotation speed of the pump 34 reaches the target rotation speed, the third valve 3 is opened, the fourth valve 4 is closed, and water in the pipeline fed for the first time is discharged through the sixth valve 6; then the sixth valve 6 is operated to enter a pipeline before separation to convey unqualified skimmed milk in the buffer tank 30 to the separator 20; at the same time, the raw milk feed line 93 stops feeding raw milk or the control flow rate is reduced.

The flow rate of raw milk fed through the raw milk feeding line 93 and the flow rate of skimmed milk fed through the buffer tank 30 are regulated by the first flow rate meter 41 and the second flow rate meter 42. Preferably, the sum of the flow rate of raw milk fed through the raw milk feed line 93 and the flow rate of skimmed milk fed through the buffer tank 30 is equal to the flow rate from which the raw milk was initially designed, and cannot exceed the maximum rated design flow rate of the separator 20.

Considering that the degreasing rate can be reduced due to the increase of the feeding flow of the separator 20, after the fat detector 21 waiting for the degreasing milk detects the degreasing rate to be qualified, after a certain time delay, the first valve 1 is closed, the second valve 2 is opened, after the material of the buffer tank 30 is reduced to a low liquid level, the tenth valve 10 and the eleventh valve 11 are automatically opened, the milk in the pipeline is jacked to the pipeline raw milk from the raw milk to be sent into the pipeline 93, the material recovery is realized, the tenth valve 10 and the eleventh valve 11 are closed in a time delay, the fourth valve 4 is opened in a pulse mode, so that the pipeline and the buffer tank 30 are flushed, microorganisms are prevented from growing in the system, and then the system is automatically controlled to continuously run.

The working steps of the working mode II comprise:

the eighth valve 8 and the ninth valve 9 are opened to be communicated, the buffer tank 30 is short-circuited, and in this case, the cooling device 50 and the heating device 70 can select not to cool and heat the unqualified skimmed milk, and in this case, the milk is kept in a flowing state, no retention occurs, and the risk of microorganism growth is reduced.

In the mode, unqualified skimmed milk can be buffered in the buffer tank 30 to play a role of buffering, backfilled to the separator 20 for separation, and the fat content of the output skimmed milk is stably controlled until the fat detector 21 detects that the skimmed milk is qualified. In mode two, the fat content gradually decreases to the target value during the cycle. Mode one has a better level of control over fat than mode two. But scheme two has less material loss.

The skim milk separation system provided by the utility model carries out online connection, online buffering and online accurate backfilling on the skim milk which does not reach the required fat content, so that the online detection and backfilling of fat are realized; the method has the advantages of realizing the detection and control of the fat content in the skim milk more accurately, realizing the monitoring of the fat content in the skim milk at any time and the content control, ensuring the continuous and high-efficiency operation of downstream equipment and meeting the requirements of deep processing of the dairy products on the skim milk.

The foregoing is merely a few embodiments of the present utility model and those skilled in the art may make various modifications or alterations to the embodiments of the present utility model in light of the disclosure herein without departing from the spirit and scope of the utility model.

Claims

1. A skim milk separation system, comprising: the device comprises a separator, a buffer tank, a pump, a skim milk output pipeline, a raw milk feeding pipeline, a fat detector and a skim milk conveying change-over switch, wherein the raw milk feeding pipeline is used for conveying raw milk to the separator, and the skim milk output pipeline is connected with a skim milk conveying port of the separator;

2. The skim milk separation system of claim 1, wherein the skim milk separation system comprises,

an eighth valve is arranged between the pump and the buffer tank, a ninth valve is arranged at the skim milk inlet of the buffer tank, and the eighth valve is connected with the ninth valve through a pipeline.

3. The skim milk separation system according to claim 2, wherein,

the outlet of the pump is provided with a first flow meter.

4. The skim milk separation system as claimed in claim 3, wherein,

the buffer tank is provided with a high liquid level switch and a low liquid level switch.

5. The skim milk separation system of claim 1, wherein the skim milk separation system comprises,

the skim milk output pipeline comprises a skim milk output main pipeline, a first branch pipeline and a second branch pipeline, wherein the first branch pipeline and the second branch pipeline are connected in parallel to the skim milk output main pipeline, and the first branch pipeline is connected with a skim milk inlet of the buffer tank;

the fat detector is arranged on the skimmed milk output main path; the skimmed milk conveying change-over switch comprises a first valve arranged on the first branch and a second valve arranged on the second branch.

6. The skim milk separation system as claimed in claim 5, wherein,

the first branch is provided with an eleventh valve, and the eleventh valve is provided with a pure water input pipeline.

7. The skim milk separation system as claimed in claim 6, wherein,

the outlet of the pump is connected with a flushing pipeline, the flushing pipeline is connected with the top of the buffer tank, and the flushing pipeline is provided with a fourth valve.

8. The skim milk separation system as claimed in claim 6, wherein,

a sixth valve is arranged between the outlet of the pump and the raw milk feeding pipeline, and the sixth valve is provided with a discharge port.

9. The skim milk separation system according to any one of claims 1 to 8, wherein,

the pipeline between the skimmed milk conveying change-over switch and the buffer tank is provided with a cooling device, and the pipeline between the buffer tank and the raw milk feeding pipeline is provided with a heating device.

10. The skim milk separation system according to any one of claims 1 to 8, wherein,

the raw milk feeding pipeline is provided with a second flowmeter and a fifth valve.