Falling film evaporator, pasteurizer and dairy product production system
By setting up a spray line on the outside of the steam injector and rinsing it with cleaning solution, the problem of dirt accumulation in dairy products on the outer wall of the steam injector is solved, ensuring food safety.
Patent Information
- Application Number
- CN202422209040.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-09
AI Technical Summary
In existing falling film evaporators, dairy dirt formed on the outer wall of the steam injector is prone to accumulate for a long time, leading to bacterial growth and affecting food safety.
A spray pipe line is installed on the outside of the steam injector, and the cleaning liquid is pumped through the pump body. The outer wall of the steam injector is flushed with the spray head to remove dairy dirt.
Effectively remove dairy dirt from the outer wall of the steam injector, prevent bacteria from growing, and ensure food safety.
Smart Images
Figure CN223113685U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of dairy production, and particularly to a falling film evaporator, a pasteurizer, and a dairy production system. Background Art
[0002] During dairy production, a pasteurizer, a device that uses pasteurization to sterilize food, is often required. The pasteurizer often includes a falling film evaporator. The falling film evaporator is used to concentrate dairy products. Existing falling film evaporators include a product tower, a steam ejector, a gas-liquid separator, and a cooling tower. A material channel and a steam channel capable of heat exchange with each other are provided in the product tower. The hot steam enters the steam channel of the product tower after being pressurized by the steam ejector. The material channel of the product tower is connected to the inlet of the gas-liquid separator, and the outlet of the gas-liquid separator is connected to the cooling tower through an exhaust pipeline. When the dairy product flows through the material channel of the product, it exchanges heat with the steam in the steam channel, causing part of the dairy product to evaporate into a gaseous state. Subsequently, the gas-liquid mixture of the dairy product enters the gas-liquid separator for gas-liquid separation. The separated concentrated liquid dairy product is discharged, while the gas-liquid mixture mixed with a small amount of dairy product after separation flows through the exhaust pipeline from the outlet to the cooling tower for condensation.
[0003] Since the steam ejector has a high temperature during operation, a large amount of water vapor is generated in the outer space thereof. In order to discharge the water vapor, one end of an additional pipeline is communicated with the outer space of the steam ejector, and the other end of the additional pipeline is communicated with the exhaust pipeline. So that the water vapor in the outer space of the steam ejector and the gas discharged from the outlet of the gas-liquid separator can enter the cooling tower through the exhaust pipeline for cooling.
[0004] However, since the outer space of the steam ejector is communicated with the exhaust pipeline through the additional pipeline, the gas-liquid mixture discharged from the outlet of the gas-liquid separator may enter the outer space of the steam ejector, causing a small amount of dairy product in the gas-liquid mixture to adhere to the outer wall of the steam ejector to form dairy fouling, which is prone to generate bacteria over time and affect food safety. Summary of the Utility Model
[0005] In view of this, the present application provides a falling film evaporator, a pasteurizer, and a dairy production system to solve or improve the problem that dairy fouling is formed on the outer wall of the steam ejector and is prone to generate bacteria over time, affecting food safety.
[0006] In a first aspect, the present application provides a falling film evaporator, including:
[0007] A product tower, the material channel of the product tower is adapted to flow materials, the steam channel of the product tower is adapted to flow steam, and the steam channel is adapted to exchange heat with the material channel;
[0008] A gas-liquid separation device, which is communicated with the material channel, and is adapted to separate the gas-liquid mixed material from the material channel into gas and liquid;
[0009] A steam ejector, through which steam is communicated with the steam channel;
[0010] A spray pipeline with cleaning liquid flowing inside;
[0011] A first spray head, which is communicated with the spray pipeline through a first pipeline, and is arranged outside the steam ejector and is adapted to wash the outer wall of the steam ejector.
[0012] In an optional embodiment, it further includes:
[0013] A first solenoid valve, which is arranged on the first pipeline to control the on-off of the first pipeline.
[0014] In an optional embodiment, it further includes:
[0015] A drainage pipeline, which is communicated with the bottom of the outer wall of the steam ejector, and is adapted to discharge the cleaning liquid ejected by the first spray head.
[0016] In an optional embodiment, it further includes:
[0017] A second solenoid valve, which is arranged on the drainage pipeline to control the on-off of the drainage pipeline.
[0018] In an optional embodiment, it further includes:
[0019] A second spray head, which is communicated with the spray pipeline through a second pipeline, and is arranged inside the gas-liquid separation device.
[0020] In an optional embodiment, it further includes:
[0021] A third solenoid valve, which is arranged on the second pipeline to control the on-off of the second pipeline.
[0022] In an optional embodiment, it further includes:
[0023] A third spray head, which is communicated with the spray pipeline through a third pipeline, and is arranged at the top side inside the product tower;
[0024] A fourth spray head, which is communicated with the spray pipeline through a fourth pipeline, and is arranged at the bottom side inside the product tower.
[0025] In an optional embodiment, it further includes:
[0026] The fourth solenoid valve is arranged on the third pipeline to control the on-off of the third pipeline;
[0027] The fifth solenoid valve is arranged on the fourth pipeline to control the on-off of the fourth pipeline.
[0028] In a second aspect, the present application also provides a pasteurizer, including the falling film evaporator described above arbitrarily.
[0029] In a third aspect, the present application also provides a dairy product production system, including the falling film evaporator or the pasteurizer described above arbitrarily.
[0030] For the falling film evaporator provided by the present application, water as a cleaning liquid is pumped into the spray pipeline through a pump body, and the first nozzle is communicated with the spray pipeline through the first pipeline, so that the water in the spray pipeline can flow to the first nozzle through the first pipeline and be sprayed out. The first nozzle is arranged in the outer space of the steam ejector, so that the water sprayed out from the first nozzle can wash the outer wall of the steam ejector. When dairy product dirt is formed and accumulated on the outer wall of the steam ejector, the pump body pumps the cleaning liquid into the spray pipeline, and the cleaning liquid in the spray pipeline flows to the first nozzle through the first pipeline and is sprayed out to wash the outer wall of the steam ejector, thereby washing away the dairy product dirt accumulated on the outer wall of the steam ejector and avoiding the influence on food safety due to the generation of bacteria caused by the long-term accumulation of dairy product dirt. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the related art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the related art. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0032] Figure 1 It is a schematic structural diagram of a falling film evaporator according to an embodiment of the present application;
[0033] Figure 2 It is Figure 1 a partial enlarged schematic diagram of A in
[0034] Description of the reference numerals:
[0035] 1. Product tower; 2. Gas-liquid separation device; 3. Steam ejector; 4. Spray pipeline; 5. First nozzle; 6. First pipeline; 7. First solenoid valve; 8. Drainage pipeline; 9. Second solenoid valve; 10. Second nozzle; 11. Second pipeline; 12. Third solenoid valve; 13. Third nozzle; 14. Third pipeline; 15. Fourth nozzle; 16. Fourth pipeline; 17. Fourth solenoid valve; 18. Fifth solenoid valve; 19. Cooling tower. Detailed implementation manners
[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.
[0037] The following combines Figures 1 to 2 , and describes the embodiments of the present application.
[0038] According to an embodiment of the present application, on the one hand, a falling film evaporator is provided. As shown in Figure 1 and Figure 2 , it includes a product tower 1, a gas-liquid separation device 2, a steam ejector 3, a spray pipeline 4, and a first spray head 5. The product tower 1 has a material channel and a steam channel. Hot steam flows in the steam channel, and when dairy products flow as materials in the material channel, they can exchange heat with the hot steam in the steam channel. The inlet of the gas-liquid separation device 2 is connected to the material channel through a pipeline. After the gas-liquid mixture enters the gas-liquid separation device 2, the gas-liquid separation device 2 can separate gas from liquid. The gas-liquid separation device 2 can be a cyclone separator. The steam ejector 3 is connected to the steam channel of the product tower 1 through a pipeline.
[0039] The gas outlet of the gas-liquid separator is connected to a cooling tower 19 through an exhaust pipeline. When dairy products flow in the material channel of the product, they exchange heat with the steam in the steam channel, causing part of the dairy products to evaporate into a gaseous state. Subsequently, the gas-liquid mixture of dairy products enters the gas-liquid separator for gas-liquid separation. The separated concentrated liquid dairy products are discharged, and the gas-liquid mixture mixed with a small amount of dairy products after separation flows from the gas outlet through the exhaust pipeline to the cooling tower 19 for condensation. Since the steam ejector 3 has a high temperature during operation, a large amount of water vapor is generated in the outer space thereof. To discharge the water vapor, one end of an additional pipeline is connected to the outer space of the steam ejector 3, and the other end of the additional pipeline is connected to the exhaust pipeline. So that the water vapor in the outer space of the steam ejector 3 and the gas discharged from the gas outlet of the gas-liquid separator can both enter the cooling tower 19 through the exhaust pipeline for cooling. Since the outer space of the steam ejector 3 is connected to the exhaust pipeline through the additional pipeline, the gas-liquid mixture discharged from the gas outlet of the gas-liquid separator may enter the outer space of the steam ejector 3, causing a small amount of dairy products in the gas-liquid mixture to adhere to the outer wall of the steam ejector 3 to form dairy product dirt.
[0040] A cleaning liquid is pumped into the spray line 4 through the pump body, wherein the cleaning liquid may be water. The first nozzle 5 is connected to the spray line 4 through the first pipeline 6, so that the water in the spray line 4 can flow to the first nozzle 5 through the first pipeline 6 and be sprayed. The first nozzle 5 is arranged in the outer space of the steam ejector 3, so that the water sprayed from the first nozzle 5 can wash the outer wall of the steam ejector 3.
[0041] With this arrangement, when dairy dirt is formed and accumulated on the outer wall of the steam injector 3, the pump body pumps water into the spray line 4, and the water in the spray line 4 flows to the first nozzle 5 through the first pipeline 6 to be sprayed out to flush the outer wall of the steam injector 3, thereby cleaning away the dairy dirt accumulated on the outer wall of the steam injector 3, thereby preventing the dairy dirt from accumulating for a long time to produce bacteria and affect food safety.
[0042] In an optional embodiment, if Figure 1 As shown, the falling film evaporator also includes a first solenoid valve 7, which is arranged on the first pipeline 6. So that: when the first solenoid valve 7 is opened, the first pipeline 6 is connected; when the first solenoid valve 7 is closed, the first pipeline 6 is cut off. The first solenoid valve 7 is connected to the programmable controller for communication. In this way, when it is necessary to flush the outer wall of the steam ejector 3, the programmable controller can be used to control the first solenoid valve 7 to open. At this time, the first pipeline 6 is connected, and the water in the spray line 4 can flow through the first pipeline 6 to the first nozzle 5 to spray, thereby flushing the outer wall of the steam ejector 3. After flushing, the programmable controller is used to control the first solenoid valve 7 to close. At this time, the first pipeline 6 is cut off, and the water in the spray line 4 cannot flow through the first pipeline 6 to the first nozzle 5.
[0043] With such arrangement, the first solenoid valve 7 can be controlled to be opened and closed in real time according to demand, so as to control the conduction and disconnection of the first pipeline 6, so as to start and stop cleaning the outer wall of the steam ejector 3, and the control is more convenient.
[0044] In an optional embodiment, if Figure 1 As shown, the falling film evaporator further includes a drainage line 8, one end of which is connected to the bottom of the outer wall of the steam ejector 3. When the first nozzle 5 is used to spray water to clean the outer wall of the steam ejector 3, after the water flow washes down the dairy dirt, the mixture of dirt and water flows along the outer wall of the steam ejector 3 to the bottom, and then enters the drainage line 8 for discharge, and the other end of the drainage line 8 is connected to a drain or collection device. Thus, the mixture of dirt and water flows along the outer wall of the steam ejector 3 to the bottom and is discharged to a designated location through the drainage line 8. Avoid the mixture of dirt and water flowing arbitrarily to cause other pollution.
[0045] In a further embodiment, Figure 1As shown, the falling film evaporator further includes a second solenoid valve 9, which is arranged on the drainage pipeline 8, so that: when the second solenoid valve 9 is opened, the drainage pipeline 8 is connected; when the second solenoid valve 9 is closed, the drainage pipeline 8 is cut off.
[0046] The second electromagnetic valve 9 is connected to the programmable controller for communication. In this way, when the outer wall of the steam ejector 3 is flushed, the programmable controller is used to control the second electromagnetic valve 9 to open and the drainage pipeline 8 is connected according to the needs. At this time, the mixture of dirt and water flows along the outer wall of the steam ejector 3 to the bottom, and then enters the drainage pipeline 8 for discharge. After the flushing is completed, the programmable controller is used to control the second electromagnetic valve 9 to close, and the drainage pipeline 8 is cut off.
[0047] With such an arrangement, the second solenoid valve 9 can be controlled to be opened and closed in real time according to demand, so as to control the conduction and disconnection of the drainage pipeline 8, and the operation is more convenient.
[0048] In an optional embodiment, if Figure 1 As shown, the falling film evaporator further includes a second nozzle 10. The second nozzle 10 is connected to the spray line 4 through the second pipeline 11, so that water in the spray line 4 can flow to the second nozzle 10 through the second pipeline 11 and be sprayed. The second nozzle 10 is arranged in the gas-liquid separation device 2, so that the water sprayed from the second nozzle 10 can flush the inside of the gas-liquid separation device 2.
[0049] With this arrangement, the water in the spray line 4 can be sprayed from the second spray head 10 to clean the inside of the gas-liquid separation device 2, thereby keeping the inside of the gas-liquid separation device 2 clean and reducing the growth of bacteria.
[0050] In a further embodiment, Figure 1 As shown, the falling film evaporator further includes a third solenoid valve 12, which is arranged on the second pipeline 11, so that: when the third solenoid valve 12 is opened, the second pipeline 11 is connected; when the third solenoid valve 12 is closed, the second pipeline 11 is cut off.
[0051] The third solenoid valve 12 is connected to the programmable controller for communication. In this way, when it is necessary to flush the inside of the gas-liquid separation device 2, the programmable controller can be used to control the third solenoid valve 12 to open, and the second pipeline 11 can be turned on. At this time, the water in the spray line 4 can flow through the second pipeline 11 to the second nozzle 10 for spraying, thereby flushing the inside of the gas-liquid separation device 2. After flushing, the programmable controller is used to control the third solenoid valve 12 to close. At this time, the second pipeline 11 is cut off, and the water in the spray line 4 cannot flow through the second pipeline 11 to the second nozzle 10.
[0052] In an optional embodiment, if Figure 1As shown in the figure, the falling film evaporator further includes a third spray head 13 and a fourth spray head 15. The third spray head 13 is connected to the spray pipeline 4 through a third pipeline 14, and the fourth spray head 15 is connected to the spray pipeline 4 through a fourth pipeline 16. Thus, the water in the spray pipeline 4 can flow to the third spray head 13 through the third pipeline 14 and be sprayed out, and can also flow to the fourth spray head 15 through the fourth pipeline 16 and be sprayed out. The third spray head 13 is arranged on the top side inside the product tower 1, so that the water sprayed out by the third spray head 13 can wash the top side inside the product tower 1. The fourth spray head 15 is arranged on the bottom side inside the product tower 1, so that the water sprayed out by the fourth spray head 15 can wash the bottom side inside the product tower 1.
[0053] With such an arrangement, the water in the spray pipeline 4 can be sprayed out from the third spray head 13 and the fourth spray head 15 respectively, to wash the top side and the bottom side inside the product tower 1 respectively, keep the inside of the product tower 1 clean, and reduce the growth of bacteria.
[0054] In a further embodiment, as Figure 1 shown in the figure, the falling film evaporator further includes a fourth solenoid valve 17 and a fifth solenoid valve 18. The fourth solenoid valve 17 is arranged on the third pipeline 14, such that: when the fourth solenoid valve 17 is opened, the third pipeline 14 is conducted; when the fourth solenoid valve 17 is closed, the third pipeline 14 is cut off. The fifth solenoid valve 18 is arranged on the fourth pipeline 16, such that: when the fifth solenoid valve 18 is opened, the fourth pipeline 16 is conducted; when the fifth solenoid valve 18 is closed, the fourth pipeline 16 is cut off.
[0055] The fourth solenoid valve 17 and the fifth solenoid valve 18 are respectively communicatively connected to the programmable logic controller. In this way, according to requirements, when it is necessary to wash the inside of the product tower 1, the programmable logic controller can be used to control the fourth solenoid valve 17 and the fifth solenoid valve 18 to open respectively, and the third pipeline 14 and the fourth pipeline 16 are conducted. At this time, the water in the spray pipeline 4 can flow to the third spray head 13 through the third pipeline 14 and be sprayed out to wash the top side inside the product tower 1. The water in the spray pipeline 4 also flows to the fourth spray head 15 through the fourth pipeline 16 and is sprayed out to wash the bottom side inside the product tower 1. After the washing is completed, the programmable logic controller is used to control the fourth solenoid valve 17 and the fifth solenoid valve 18 to close, and at this time the third pipeline 14 and the fourth pipeline 16 are cut off.
[0056] It should be noted that the fourth solenoid valve 17 and the fifth solenoid valve 18 can be opened and closed simultaneously, or can be opened and closed independently. To respectively control the conduction and cut-off of the third pipeline 14 and the fourth pipeline 16, the operation is more flexible and convenient.
[0057] In an alternative embodiment, the first nozzle 5, the second nozzle 10, the third nozzle 13, the fourth nozzle 15, the drainage pipeline 8, the first solenoid valve 7, the second solenoid valve 9, the third solenoid valve 12, the fourth solenoid valve 17, and the fifth solenoid valve 18 are all provided. Among them, the first solenoid valve 7, the second solenoid valve 9, the third solenoid valve 12, the fourth solenoid valve 17, and the fifth solenoid valve 18 are respectively communicatively connected to the programmable logic controller. The first solenoid valve 7, the second solenoid valve 9, the third solenoid valve 12, the fourth solenoid valve 17, and the fifth solenoid valve 18 can be respectively controlled to open and close by the programmable logic controller according to actual requirements. Flushing at the corresponding positions can be achieved on demand.
[0058] According to an embodiment of the present application, on the other hand, a pasteurizer is further provided, including any of the falling film evaporators above. The beneficial effects of this pasteurizer are the same as those of the falling film evaporator, so they will not be elaborated here.
[0059] According to an embodiment of the present application, on yet another hand, a dairy product production system is further provided, including any of the falling film evaporators or pasteurizers above. The beneficial effects of this dairy product production system are the same as those of the falling film evaporator or pasteurizer, so they will not be elaborated here.
[0060] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations all fall within the scope defined by the present application.
Claims
1. A falling film evaporator, characterized in that, Comprising: A product column (1), the material passage of the product column (1) being adapted to allow the flow of material, the steam passage of the product column (1) being adapted to allow the flow of steam, and the steam passage being adapted to exchange heat with the material passage; A gas-liquid separation device (2), connected to the material passage, the gas-liquid separation device (2) being adapted to separate the gas-liquid mixed material from the material passage into gas and liquid; A steam ejector (3), through which steam is connected to the steam passage; A spray pipeline (4) with a cleaning liquid flowing inside; A first spray head (5), connected to the spray pipeline (4) through a first pipeline (6), the first spray head (5) being arranged outside the steam ejector (3) and being adapted to wash the outer wall of the steam ejector (3).
2. The falling film evaporator according to claim 1, wherein Further comprising: A first solenoid valve (7), arranged on the first pipeline (6) to control the on-off of the first pipeline (6).
3. The falling film evaporator according to claim 1, characterized in that, Further comprising: A drainage pipeline (8), connected to the bottom of the outer wall of the steam ejector (3), the drainage pipeline (8) being adapted to discharge the cleaning liquid ejected by the first spray head (5).
4. The falling film evaporator according to claim 3, characterized in that, Further comprising: A second solenoid valve (9), arranged on the drainage pipeline (8) to control the on-off of the drainage pipeline (8).
5. The falling film evaporator according to claim 1, characterized in that, Further comprising: A second spray head (10), connected to the spray pipeline (4) through a second pipeline (11), the second spray head (10) being arranged inside the gas-liquid separation device (2).
6. The falling film evaporator according to claim 5, characterized in that, Further comprising: A third solenoid valve (12), arranged on the second pipeline (11) to control the on-off of the second pipeline (11).
7. The falling film evaporator according to claim 1, characterized in that, Further comprising: A third spray head (13), connected to the spray pipeline (4) through a third pipeline (14), the third spray head (13) being arranged on the top side inside the product column (1); A fourth spray head (15), connected to the spray pipeline (4) through a fourth pipeline (16), the fourth spray head (15) being arranged on the bottom side inside the product column (1).
8. The falling film evaporator according to claim 7, characterized in that, Further comprising: A fourth solenoid valve (17), arranged on the third pipeline (14) to control the on-off of the third pipeline (14); A fifth solenoid valve (18), arranged on the fourth pipeline (16) to control the on-off of the fourth pipeline (16).
9. A killing machine, characterized in that, Comprising the falling film evaporator according to any one of claims 1-8.
10. A dairy production system, characterized in that, Comprising the falling film evaporator according to any one of claims 1-8 or the pasteurizer according to claim 9.