Dairy pasteurizer cleaning system

Abstract

The utility model discloses a dairy product pasteurizer cleaning system, including plate type pasteurizer and PLC, the inside of plate type pasteurizer is provided with a plurality of mutually superimposed sheet, dairy product input and output side between the sheet are connected with multiple component liquid pipeline and liquid collecting pipeline respectively, and the liquid pipeline is all communicated with the water collector, and the liquid collecting pipeline is all communicated with the water collector. The dairy product pasteurizer cleaning system, through the water distributor, separates the emulsion and sends to the sheet, adds the pressure detection on the pipeline of the sheet input and output, judges whether the sheet inside is blocked, realizes the sheet separate cleaning of non - stop simultaneously, although the equipment cost has the increase, but realizes the continuous production, improves the production capacity.

Description

Technical Field

[0001] This utility model relates to the technical field of dairy processing equipment, specifically a cleaning system for a dairy pasteurization machine. Background Technology

[0002] Pasteurizers are devices used to pasteurize food products such as milk, juice, and beer. Their core principle is to kill microorganisms through a specific combination of temperature and time while preserving the food's nutrients and flavor to the maximum extent possible. Pasteurizers can be classified into various types based on the type of food being pasteurized, the process characteristics, and their structural form.

[0003] Although plate pasteurizers are widely used due to their high heat transfer efficiency and compact structure, they also have some inherent drawbacks due to their structure and working principle. The core of a plate pasteurizer is the flow channel between the thin plates, which is prone to blockage, leading to equipment interruption. It is also impossible to monitor the blockage between the plates in real time. Cleaning a plate pasteurizer requires stopping the machine and pushing out the raw materials. Currently, clean water is used for pushing out the raw materials, but the clean water will mix with the dairy products and needs to be separated and recycled again. During the shutdown and cleaning process, the equipment cannot achieve continuous production. Therefore, technical improvements are needed to the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide a cleaning system for a dairy pasteurization machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: The dairy pasteurization machine cleaning system includes a plate pasteurizer and a PLC. The plate pasteurizer has multiple stacked plates inside. The dairy product input and output sides of the plates are connected to multiple component liquid distribution lines and collection lines, respectively. The distribution lines are all connected to a water distributor, and the collection lines are all connected to a water collector. On the distribution lines, according to the liquid flow direction, group A valves, a cleaning line, and group A pressure sensors are installed sequentially. The cleaning lines are all connected to the main pipeline and include a first cleaning liquid line. On the collection lines, according to the liquid flow direction, group B pressure sensors, a recovery line, and group B valves are installed sequentially. Valves are also installed on the cleaning and recovery lines.

[0006] As a further embodiment of this utility model: the first cleaning fluid pipeline is connected to the clean water tank and the second cleaning fluid pipeline respectively. The clean water tank and the second cleaning fluid pipeline are connected to the first cleaning fluid pipeline through a three-way valve. A liquid pump is installed on the first cleaning fluid pipeline, and the liquid pump draws clean water from the clean water tank and the second cleaning fluid pipeline and delivers it to the main pipeline.

[0007] As a further improvement of this utility model: the valves in group a, group b, and the valves installed on the cleaning pipeline and the recovery pipeline are all controlled by a PLC.

[0008] As a further improvement of this utility model, the main pipeline is also connected to a nitrogen generator via a valve, which can selectively input nitrogen, cleaning fluid, or clean water into the main pipeline by switching the valve.

[0009] As a further embodiment of this utility model: all the recovery pipelines are connected to the separation tank a, the top of the separation tank a is connected to the nitrogen recovery pipeline a, and the bottom of the separation tank a is connected to the cleaning fluid treatment pipeline.

[0010] As a further embodiment of this utility model: the output end of the water collector is connected to the separator b, the top of the separator b is connected to the nitrogen recovery pipeline b, and the bottom of the separator b is connected to the product pipeline.

[0011] As a further improvement of this utility model, a one-way valve is provided at the connection between the liquid collection pipeline and the water collector.

[0012] As a further embodiment of this utility model: the plate has multiple a-type plates and b-type plates, and fluid channels are provided between the a-type plates and b-type plates. The fluid channels are not interconnected. Clamps and pipe openings are provided on the a-type plates and b-type plates. The clamps hold the pipe openings by bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This dairy pasteurization machine cleaning system uses a water distributor to separate the emulsion and deliver it into the plates. By installing pressure detectors on the plate input and output pipelines, it can determine whether there is any blockage inside the plates. At the same time, it can clean the plates individually without stopping the machine. Although the equipment cost increases, it enables continuous production and improves capacity. Attached Figure Description

[0014] Figure 1 A schematic diagram of a cleaning system for a dairy pasteurization machine; Figure 2 This is a schematic diagram of the structure of a plate in a dairy pasteurization machine cleaning system.

[0015] In the diagram: 1. Plate pasteurizer; 101. Type a plate; 102. Type b plate; 103. Fluid channel; 104. Medium port; 105. Port; 106. Clamp; 2. PLC; 3. Water distributor; 4. Liquid distribution line; 5. Group a valve; 6. Cleaning line; 7. Main line; 8. Nitrogen generator; 9. First cleaning fluid line; 10. Second cleaning fluid line; 11. Group A pressure sensor; 12. Liquid collection line; 13. Group b pressure sensor; 14. Check valve; 15. Water collector; 16. Group b valve; 17. Recovery line; 18. Separator a; 19. Separator b; 20. Nitrogen recovery line a; 21. Cleaning fluid treatment line; 22. Nitrogen recovery line b; 23. Product line; 24. Clean water tank. Detailed Implementation

[0016] Please see Figures 1-2 In this embodiment of the invention, the dairy product pasteurization machine cleaning system includes a plate pasteurizer 1 and a PLC 2. The plate pasteurizer 1 has multiple stacked plates inside. The dairy product input and output sides between the plates are respectively connected to multi-component liquid distribution lines 4 and liquid collection lines 12. The liquid distribution lines 4 are all connected to water distributors 3, and the liquid collection lines 12 are all connected to water collectors 15. A group of valves 5, a cleaning line 6, and a group of pressure sensors 11 are sequentially installed on the liquid distribution lines 4 according to the liquid flow direction. The cleaning lines 6 are all connected to the main pipeline 7. A first cleaning liquid line 9 is installed on the cleaning lines 6. The liquid collection lines 12 are sequentially installed according to the liquid flow direction. A group of pressure sensors 13 (b), a recovery pipeline 17, and a group of valves 16 (b) are installed sequentially. Valves are installed on the cleaning pipeline 6 and the recovery pipeline 17. This application uses a water distributor 3 and a liquid distribution pipeline 4 to deliver the emulsion into the plates of the plate pasteurizer 1. The emulsion enters the plate pasteurizer 1 through the water distributor 3 and the liquid distribution pipeline 4 and is output from the liquid collection pipeline 12 and the water collector 15 to complete the sterilization. The pressure sensors 11 (A) and 13 (b) detect the hydraulic pressure at the front and rear ends of the plates and determine whether there is a blockage based on the pressure difference. The separate delivery of emulsion can not only detect plate blockage, but also provide conditions for plate cleaning of the plate pasteurizer 1 without stopping the machine.

[0017] In a preferred embodiment, the first cleaning fluid line 9 is connected to the clean water tank 24 and the second cleaning fluid line 10, respectively. The clean water tank 24 and the second cleaning fluid line 10 are connected to the first cleaning fluid line 9 through a three-way valve. A liquid pump is installed on the first cleaning fluid line 9 to pump clean water from the clean water tank 24 and the second cleaning fluid line 10 to the main pipeline 7. The number of second cleaning fluid lines 10 is configured according to the type of cleaning fluid, with at least two: an alkaline cleaning agent and an acidic cleaning agent. The cleaning process involves circulating an alkaline cleaning agent at 60-70°C with a concentration of 1%-2% and a conductivity of 90-130ms for 30 minutes, followed by rinsing with clean water to remove residual alkaline cleaning agent for 5-10 minutes until the pH value of the outlet solution reaches neutral. Then, the cleaning process involves circulating an acidic cleaning agent at 40-50°C with a concentration of 1%-1.5% and a conductivity of 77-111ms for 30 minutes, followed by rinsing with clean water for about 5-10 minutes until the pH value of the outlet solution reaches neutral, thus completing the cleaning process.

[0018] In a preferred embodiment, valves 5 (group a), valve 16 (group b), and valves on cleaning lines 6 and recovery lines 17 are all controlled by PLC 2. By controlling the valves to switch lines, the emulsion flows from a distribution line 4 to the plate interlayer and then to the collection line 12 at the other end, forming a group. During the cleaning process, valves 5 (group a) and 16 (group b) of this group are closed, while the valves on cleaning lines 6 and recovery lines 17 are opened, allowing the cleaning fluid to enter for circulating cleaning. Each cleaning can clean a single plate of the plate pasteurizer 1, while the plates of other plate pasteurizers 1 operate normally, thus achieving continuous production without stopping the machine.

[0019] In a preferred embodiment, the main pipeline 7 is also connected to a nitrogen generator 8 via a valve. By switching the valve, nitrogen, cleaning fluid, or water can be selectively introduced into the main pipeline 7. Nitrogen and emulsion generally do not react chemically and will not affect the emulsion. Using nitrogen to push the emulsion out can effectively reduce the dairy products' contact with air and prevent them from reacting and deteriorating. Then, rinsing with water can effectively reduce the waste of emulsion and prevent a large amount of water from mixing with the emulsion.

[0020] In a preferred embodiment, all recovery lines 17 are connected to a separation tank a18. The top of the separation tank a18 is connected to a nitrogen recovery line a20, and the bottom of the separation tank a18 is connected to a cleaning fluid treatment line 21. Nitrogen and cleaning fluid enter the separation tank a18 together. The liquid accumulates at the bottom and returns to the first cleaning fluid line 9 through the cleaning fluid treatment line 21 for circulation. The nitrogen is recovered into the storage tank and input into the main line 7 for the next use. Nitrogen is also used for the ejection of cleaning fluid and clean water.

[0021] In a preferred embodiment, the output end of the water collector 15 is connected to the separator b19. The top of the separator b19 is connected to the nitrogen recovery pipeline b22, and the bottom of the separator b19 is connected to the product pipeline 23. During the material ejection process, if the emulsion or water is ejected completely, nitrogen will inevitably remain in the plate. Therefore, the output end of the water collector 15 also needs to be equipped with a separator b19 to separate the nitrogen.

[0022] In a preferred embodiment, a one-way valve 14 is provided at the connection between the liquid collection line 12 and the water collector 15. When the plate is cleaned separately, there is still emulsion in other lines. During the nitrogen top-loading process, a certain pressure will be applied. Installing the one-way valve 14 can prevent the backflow of emulsion in other lines.

[0023] In a preferred embodiment, the plate has multiple type a plates 101 and type b plates 102. A fluid channel 103 is provided between the type a plates 101 and type b plates 102. The fluid channels 103 are not interconnected. A clamp 106 and a pipe opening 105 are provided on the type a plates 101 and type b plates 102. The clamp 106 clamps the pipe opening 105 with bolts. A rubber ring is provided on the pipe opening 105 to achieve a sealing effect under the clamping force.

[0024] It should be noted that all the above embodiments belong to the same utility model concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not detailed, please refer to the description in other embodiments.

[0025] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cleaning system for a dairy pasteurization machine, comprising a plate pasteurizer (1) and a PLC (2), wherein the plate pasteurizer (1) has multiple stacked plates inside, characterized in that, The dairy product input and output sides between the plates are respectively connected to a multi-component liquid pipeline (4) and a liquid collection pipeline (12). The liquid distribution pipeline (4) is connected to the water separator (3), and the liquid collection pipeline (12) is connected to the water collector (15). The liquid distribution pipeline (4) is equipped with a group of valves (5), a cleaning pipeline (6) and a group of pressure sensors (11) in sequence according to the liquid flow direction. The cleaning pipeline (6) is connected to the main pipeline (7). The cleaning pipeline (6) is equipped with a first cleaning liquid pipeline (9). The liquid collection pipeline (12) is equipped with a group of pressure sensors (13), a recovery pipeline (17) and a group of valves (16) in sequence according to the liquid flow direction. Valves are respectively installed on the cleaning pipeline (6) and the recovery pipeline (17).

2. The cleaning system for a dairy pasteurization machine according to claim 1, characterized in that, The first cleaning fluid pipeline (9) is connected to the clean water tank (24) and the second cleaning fluid pipeline (10) respectively. The clean water tank (24) and the second cleaning fluid pipeline (10) are connected to the first cleaning fluid pipeline (9) through a three-way valve. A liquid pump is installed on the first cleaning fluid pipeline (9) to pump the clean water tank (24) and the second cleaning fluid pipeline (10) to the main pipeline (7).

3. The cleaning system for a dairy pasteurization machine according to claim 1, characterized in that, The valves in group a (5), group b (16), as well as the valves on the cleaning pipeline (6) and the recovery pipeline (17), are all controlled by PLC (2).

4. The cleaning system for a dairy pasteurization machine according to any one of claims 1-3, characterized in that, The main pipeline (7) is also connected to a nitrogen generator (8) via a valve, which can selectively supply nitrogen, cleaning fluid or clean water to the main pipeline (7) by switching the valve.

5. The cleaning system for a dairy pasteurization machine according to claim 4, characterized in that, The recovery pipelines (17) are all connected to the separation tank a (18). The top of the separation tank a (18) is connected to the nitrogen recovery pipeline a (20), and the bottom of the separation tank a (18) is connected to the cleaning fluid treatment pipeline (21).

6. The cleaning system for a dairy pasteurization machine according to claim 4, characterized in that, The output end of the water collector (15) is connected to the separator b (19), the top of the separator b (19) is connected to the nitrogen recovery pipeline b (22), and the bottom of the separator b (19) is connected to the product pipeline (23).

7. The cleaning system for a dairy pasteurization machine according to claim 1, characterized in that, A one-way valve (14) is provided at the connection between the liquid collection pipeline (12) and the water collector (15).

8. The cleaning system for a dairy pasteurization machine according to claim 1, characterized in that, The plate has multiple type a plate (101) and type b plate (102). A fluid channel (103) is provided between type a plate (101) and type b plate (102). The fluid channels (103) are not interconnected. A clamp (106) and a pipe opening (105) are provided on type a plate (101) and type b plate (102). The clamp (106) clamps the pipe opening (105) by bolts.

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