MVR (Mechanical Vapor Recompression) concentrated milk mixing system
By improving the MVR milk concentration and conditioning system, the problem of low steam thermal efficiency in the MVR evaporation system is solved by using gas circulation and turbo compressor pressurization and heating. This achieves efficient milk concentration and energy saving, ensuring milk quality.
Patent Information
- Application Number
- CN202520382223.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Existing MVR evaporation systems have low heat exchange efficiency between steam and milk during milk concentration, resulting in low water removal efficiency, low steam heat utilization, serious resource waste, poor controllability of the milk concentration and preparation process, and difficulty in ensuring milk quality.
An MVR (Medium-Volume Retention) milk concentration and preparation system is adopted, including a heat exchanger, a gas-liquid separator, a turbo compressor, and a water pump. The system exchanges heat with the milk through gas circulation, utilizes the turbo compressor to pressurize and heat the steam, and concentrates the milk through water pump circulation. Combined with a conical evaporator and a disperser, the heat exchange efficiency is improved, achieving rapid separation and concentration of the milk.
It improves milk concentration efficiency, enhances steam heat energy utilization, ensures milk quality, and achieves a highly efficient and energy-saving concentration effect.
Smart Images
Figure CN223800076U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of concentrated milk preparation, especially to a MVR concentrated milk preparation system. BACKGROUND
[0002] With the further improvement of environmental protection and energy saving requirements, MVR evaporators gradually become the first choice of evaporation devices including wastewater concentration treatment with very low operation cost. In the past two years, the domestic mechanical vapor compressor industry has developed rapidly, and the share of domestic compressors has been increasing. MVR is the abbreviation of mechanical vapor recompression technology, which uses the secondary steam and its energy generated by the evaporation system to improve the low-grade steam into high-grade steam heat source through the mechanical work of the compressor. Such a cycle provides heat energy to the evaporation system, thereby reducing the demand for external energy resources, an energy-saving technology. Its working process is that the low-temperature steam is compressed by the compressor, the temperature and pressure are increased, and the heat enthalpy is increased, and then it enters the heat exchanger to condense, so as to fully utilize the latent heat of the steam.
[0003] At present, the heat exchange efficiency of steam heat and milk liquid is low during the concentration process of milk liquid by MVR evaporator, which leads to low concentration and water removal efficiency of milk liquid, low utilization rate of steam heat, resource waste, and the concentrated milk liquid is difficult to meet the requirements at one time, which cannot meet the use demand, the concentration and milk preparation process is poor in controllability, and the quality of milk liquid is difficult to guarantee. UTILITY MODEL CONTENT
[0004] The utility model provides a kind of MVR concentrated milk preparation system, solve the heat exchange efficiency of steam heat and milk liquid in the concentration process of milk liquid by traditional MVR evaporation system, which leads to low concentration and water removal efficiency of milk liquid, low utilization rate of steam heat, resource waste, poor controllability of concentration and milk preparation process, and the quality of milk liquid is difficult to guarantee problem.
[0005] The utility model provides a kind of MVR concentration milk mixing system, including heat exchanger, gas-liquid separator, turbine compressor, storage tank, water pump, the upper end lateral wall of heat exchanger is provided feed inlet, first air inlet, second air inlet, lower end lateral wall is provided with discharge port and first exhaust port, second exhaust port, the first exhaust port of heat exchanger is connected with the first air inlet joint of gas-liquid separator by first gas pipeline, the second exhaust port of heat exchanger is connected with the second air inlet joint of gas-liquid separator by second gas pipeline, the air outlet joint of gas-liquid separator is connected with the air inlet end of turbine compressor by third gas pipeline, the air outlet end of turbine compressor is connected with the second air inlet of heat exchanger by fourth gas pipeline, the discharge port of heat exchanger is connected with the liquid inlet of storage tank by first liquid pipeline, the discharge port of storage tank is connected with the water inlet of water pump by second liquid pipeline, the water outlet of water pump is connected with the feed inlet of heat exchanger by third liquid pipeline.
[0006] Further, the heat exchanger includes a tank body, a first partition, a second partition, a liquid distributor, and an evaporation pipe. The first partition and the second partition are sequentially arranged from top to bottom in the tank body. A steam heating cavity is arranged between the first partition and the second partition. The first air inlet, the second air inlet, and the first exhaust port are in communication with the steam heating cavity. A plurality of vertical evaporation pipes are arranged between the first partition and the second partition. The upper end of each evaporation pipe is connected in communication with a liquid inlet hole arranged on the first partition in correspondence, and the lower end is connected in communication with a liquid outlet hole arranged on the second partition in correspondence. The liquid distributor is arranged on the first partition. A plurality of liquid discharge ports are arranged at the bottom of the liquid distributor. Each liquid discharge port is connected with a corresponding liquid inlet hole through a liquid discharge pipe. The feed inlet is connected with the liquid distributor through a feeding pipe.
[0007] Further, a disperser is arranged inside the upper end of each evaporation pipe. A rotating shaft is coaxially arranged in the disperser. The lower end of the rotating shaft is fixedly connected with the disperser. The upper end of the rotating shaft is rotatably connected with a bearing in a bearing seat arranged at the top of the tank body. A motor is arranged at the top of the tank body. The output shaft of the motor extends into the tank body through the top plate of the tank body. A driving gear is arranged at the end of the output shaft of the motor extending into the tank body. A driven gear is arranged on each rotating shaft, which can be engaged with the driving gear for transmission.
[0008] Further, the first air inlet is connected with a steam supply pipeline.
[0009] Further, the disperser is a reverse conical shell.
[0010] Further, the evaporation pipe is a conical pipe with a diameter gradually decreasing from top to bottom.
[0011] According to the above technical solution, the utility model provides a kind of MVR concentration milk mixing system.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] The utility model discloses a heat exchanger, gas -liquid separator, turbine compressor make the gas in the concentrated milk system of adjusting the system sustained circulation and milk liquid carry out heat exchange, and the water in the milk liquid is separated quickly, makes steam heat energy full use, and the milk liquid in the storage tank and heat exchanger is concentrated through the circulation of water pump, and concentrated efficiency is high, and energy -saving effect is good, and the quality of concentrated milk liquid. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme of the utility model, the following will be to the drawing needed in the embodiment used briefly introduce, obviously, for the ordinary skill in the art person, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.
[0015] Figure 1 The whole structure schematic diagram of a kind of MVR concentrated milk system for the utility model is proposed;
[0016] Figure 2 The heat exchanger internal structure section view schematic diagram of a kind of MVR concentrated milk system for the utility model is proposed;
[0017] In the drawing:
[0018] 1-heat exchanger;11-feed inlet;12-first air inlet;13-second air inlet;14-discharge port;15-first exhaust port;16-second exhaust port;17-feeding pipe;
[0019] 2-gas-liquid separator;
[0020] 3-turbine compressor;
[0021] 4-storage tank;
[0022] 5-water pump;
[0023] 101-first gas pipeline;102-second gas pipeline;103-third gas pipeline;104-fourth gas pipeline;
[0024] 111-tank body;112-first partition;113-second partition;114-liquid distributor;115-evaporation pipe;116-disperser;121-liquid inlet hole;131-liquid outlet hole;141-liquid discharge port;142-liquid discharge pipe;180-bearing seat;181-rotating shaft;182-motor;183-driving gear;184-driven gear;
[0025] 201-first liquid pipeline;202-second liquid pipeline;203-third liquid pipeline. DETAILED DESCRIPTION
[0026] In order to make the person skilled in the art better understand the technical scheme in the utility model, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings.
[0027] Embodiment 1:
[0028] Referring to Figures 1-2 A MVR concentrated milk preparation system, comprising a heat exchanger 1, a gas-liquid separator 2, a turbo compressor 3, a storage tank 4, a water pump 5, wherein the heat exchanger 1 is used for heat exchange between milk liquid and steam, so that the water in the milk liquid is quickly separated from the milk liquid, and the milk liquid is quickly concentrated, the gas-liquid separator 2 is used for quickly separating the water from the gas in the steam separated from the milk liquid, so that the waste heat in the gas can be recycled and utilized, increasing the utilization rate of steam heat energy, the turbo compressor 3 is used for compressing, pressurizing and heating the heat energy of the waste heat steam for reuse, the storage tank 4 is used for storing milk liquid, and the water pump 5 is used for sending the milk liquid in the storage tank 4 into the heat exchanger 1 for circulating concentration, so as to ensure that the concentrated milk liquid quality meets the requirements, the upper end side wall of the heat exchanger 1 is provided with a feeding port 11, a first air inlet 12 and a second air inlet 13, and the lower end side wall is provided with a discharge port 14 and a first air outlet 15 and a second air outlet 16, the first air outlet 15 of the heat exchanger 1 is connected with the first air inlet connector of the gas-liquid separator 2 through the first gas pipeline 101, the second air outlet 16 of the heat exchanger 1 is connected with the second air inlet connector of the gas-liquid separator 2 through the second gas pipeline 102, the gas outlet connector of the gas-liquid separator 2 is connected with the air inlet end of the turbo compressor 3 through the third gas pipeline 103, the air outlet end of the turbo compressor 3 is connected with the second air inlet 13 of the heat exchanger 1 through the fourth gas pipeline 104, the discharge port 14 of the heat exchanger 1 is connected with the liquid inlet of the storage tank 4 through the first liquid pipeline 201, the discharge port of the storage tank 4 is connected with the water inlet of the water pump 5 through the second liquid pipeline 202, and the water outlet of the water pump 5 is connected with the feeding port 11 of the heat exchanger 1 through the third liquid pipeline 203. Through the heat exchanger 1, the gas-liquid separator 2 and the turbo compressor 3, the gas in the concentrated milk preparation system is continuously circulated and heat exchanged with the milk liquid, the water in the milk liquid is quickly separated, the milk liquid in the storage tank 4 and the heat exchanger 1 is circulated and concentrated by the water pump 5, the quality of the milk liquid is increased, the concentration efficiency is high, and the energy-saving effect is good.
[0029] In this embodiment, referring to Figure 2The heat exchanger 1 comprises a tank body 11, a first partition plate 12, a second partition plate 13, a liquid distributor 14 and evaporation pipes 15. The first partition plate 12 and the second partition plate 13 are sequentially arranged in the tank body 11 from top to bottom, and a steam heating cavity is arranged between the first partition plate 12 and the second partition plate 13. The first air inlet 12, the second air inlet 13 and the first air outlet 15 are communicated with the steam heating cavity (a temperature probe is arranged in the steam heating cavity to detect the temperature in the steam heating cavity). A plurality of vertical evaporation pipes 15 are arranged between the first partition plate 12 and the second partition plate 13. The upper end of each evaporation pipe 15 is connected and communicated with a corresponding liquid inlet hole 121 arranged on the first partition plate 12, and the lower end of each evaporation pipe 15 is connected and communicated with a corresponding liquid outlet hole 131 arranged on the second partition plate 13. The liquid distributor 14 is arranged on the first partition plate 12. A plurality of liquid discharge ports 141 are arranged at the bottom of the liquid distributor 14. Each liquid discharge port 141 is connected with a corresponding liquid inlet hole 121 through a liquid discharge pipe 142. A feeding port 11 is connected with the liquid distributor 14 through a feeding pipe 17. The outer side wall of the four evaporation pipes 15 is heated by high-temperature steam in the steam heating cavity. The heat is transferred to the inner side wall of the evaporation pipe 15, and heat exchange is performed between the inner side wall of the evaporation pipe 15 and the milk liquid on the inner wall of the evaporation pipe 15, so that the water in the milk liquid is released into the air. The heat exchange efficiency is high, and the concentration effect of the milk liquid is good.
[0030] In the embodiment, referring to Figure 2 A disperser 18 is arranged inside the upper end of each evaporation pipe 15. A rotating shaft 181 is coaxially arranged in the disperser 18. The lower end of the rotating shaft 181 is fixedly connected with the disperser 18. The upper end of the rotating shaft 181 is rotatably connected with a bearing in a bearing seat 180 arranged at the top of the tank body 11. A motor 182 is arranged at the top of the tank body 11. The output shaft of the motor 182 extends into the tank body 11 through the top plate of the tank body 11. A driving gear 183 is arranged at the extending end of the output shaft of the motor 182. A driven gear 184 is arranged on each rotating shaft 181 and can be driven to rotate by the driving gear 183. The driving gear 183 is driven to rotate by the motor 182. The driving gear 183 and the driven gear 184 are meshed with each other to drive the rotating shaft 181 to rotate. The rotating shaft 181 drives the disperser 18 to uniformly mix the milk liquid inside the disperser 18 and disperse the milk liquid to the inner wall of the evaporation pipe 15 under the action of centrifugal force. The milk liquid exchanges heat with the side wall of the evaporation pipe 15. The heat exchange efficiency is high, the water removal efficiency is high, and the concentration effect is good.
[0031] In the embodiment, referring to Figure 1 The first air inlet 12 is connected with a steam supply pipeline. The steam supply pipeline is used to supplement the heat in the heat exchanger 1, so that the water removal temperature of the milk liquid is kept within a constant range.
[0032] In the embodiment, referring to Figure 2 The disperser 18 is a reverse conical shell. The conical structure of the disperser 18 facilitates the uniform mixing of the milk liquid before water removal and increases the uniformity of the milk liquid after water removal.
[0033] In this embodiment, referring to Figure 2 , the evaporation pipe 15 is a tapered pipe with a diameter gradually decreasing from top to bottom, and the milk liquid flows downward along the tapered inner wall of the evaporation pipe 15, and the heat exchange efficiency is high.
[0034] In this embodiment, the gas-liquid separator 2, the turbo compressor 3, the storage tank 4, and the water pump 5 are all commercially available products.
[0035] From the above technical solution, in use, first, high-temperature steam is supplied into the steam heating cavity through the steam supply pipeline and the first air inlet 12, and when the temperature in the steam heating cavity reaches a certain temperature detected by the temperature sensor, the supply of high-temperature steam is stopped. Then, the water pump 5 is started by the controller, and the milk liquid in the storage tank 4 is lifted to the upper end of the heat exchanger 1 by the water pump 5, and is added to the liquid distributor 14 inside through the feeding pipe 17. The milk liquid is evenly distributed to the four discharge pipes 142 through the four discharge ports 141 of the liquid distributor 14, and is divided and introduced into the four dispersers 18. The output shaft of the motor 182 drives the driving gear 183 to rotate, the driving gear 183 and the driven gear 184 are engaged with each other to drive the four rotating shafts 181 to rotate, and the four rotating shafts 181 drive the four dispersers 18 to rotate, so that the milk liquid in each disperser 18 is mixed uniformly under the action of centrifugal force and is evenly dispersed to the tapered inner wall of the evaporation pipe 15, and flows downward along the tapered inner wall. In the process of flowing, heat exchange is carried out with the evaporation pipe 15 heated by steam, so that the water in the milk liquid is quickly evaporated into steam. Then, the turbo compressor 3 is started, and the steam in the steam heating cavity and the steam generated by each evaporation pipe 15 in the heat exchanger 1 are discharged into the gas-liquid separator 2 through the first gas pipeline 101 and the second gas pipeline 102. The gas-liquid separator 2 is provided with a pressure regulating valve for regulating the operating pressure in the system, so that the operating pressure in the system is maintained within a safe range. The water in the steam is separated from the gas through the gas-liquid separator 2, and the separated gas is discharged into the turbo compressor 3 through the third gas pipeline 103. The turbo compressor 3 compresses, pressurizes and heats the gas, and then returns to the steam heating cavity of the heat exchanger 1 through the fourth gas pipeline 104. According to the temperature detected by the temperature sensor in the steam heating cavity, steam can be supplied as needed by opening the steam switch of the steam supply pipeline to supplement the steam, so that the temperature in the steam heating cavity is maintained within a constant range.
[0036] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the present application cover any and all variations of the application that come within the scope of the claims and their equivalents. It is intended that the specification and examples be considered exemplary only, with the true scope of the application being indicated by the following claims.
[0037] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The embodiments described above are meant to be exemplary only, with the true scope of the application being indicated by the following claims.
Claims
1. A MVR concentrated milk foaming system, comprising a heat exchanger (1), a gas-liquid separator (2), a turbo-compressor (3), a storage tank (4), a water pump (5), characterized in that: The upper end side wall of the heat exchanger (1) is provided with a feed port (11), a first gas inlet (12) and a second gas inlet (13), the lower end side wall is provided with a discharge port (14), a first gas outlet (15) and a second gas outlet (16), the first gas outlet (15) of the heat exchanger (1) is connected with the first gas inlet connector of the gas-liquid separator (2) through the first gas pipeline (101), the second gas outlet (16) of the heat exchanger (1) is connected with the second gas inlet connector of the gas-liquid separator (2) through the second gas pipeline (102), the gas outlet connector of the gas-liquid separator (2) is connected with the gas inlet end of the turbine compressor (3) through the third gas pipeline (103), the gas outlet end of the turbine compressor (3) is connected with the second gas inlet (13) of the heat exchanger (1) through the fourth gas pipeline (104), the discharge port (14) of the heat exchanger (1) is connected with the liquid inlet of the storage tank (4) through the first liquid pipeline (201), the discharge port of the storage tank (4) is connected with the water inlet of the water pump (5) through the second liquid pipeline (202), the water outlet of the water pump (5) is connected with the feed port (11) of the heat exchanger (1) through the third liquid pipeline (203).
2. The MVR concentration milk frothing system according to claim 1, wherein, The heat exchanger (1) comprises a tank body (111), a first partition plate (112), a second partition plate (113), a liquid distributor (114) and an evaporation pipe (115), the first partition plate (112) and the second partition plate (113) are sequentially arranged in the tank body (111) from top to bottom, a steam heating cavity is arranged between the first partition plate (112) and the second partition plate (113), the first gas inlet (12), the second gas inlet (13) and the first gas outlet (15) are in communication with the steam heating cavity, a plurality of vertical evaporation pipes (115) are arranged between the first partition plate (112) and the second partition plate (113), the upper end of each evaporation pipe (115) is connected and communicated with the corresponding liquid inlet hole (121) arranged on the first partition plate (112), the lower end is connected and communicated with the corresponding liquid outlet hole (131) arranged on the second partition plate (113), the liquid distributor (114) is arranged on the first partition plate (112), a plurality of liquid discharge ports (141) are arranged at the bottom of the liquid distributor (114), each liquid discharge port (141) is connected with the corresponding liquid inlet hole (121) through a liquid discharge pipe (142), and the feed port (11) is connected with the liquid distributor (114) through a feeding pipe (17).
3. A MVR concentration milk fortifying system according to claim 2, wherein, The upper end of each evaporation pipe (115) is internally provided with a disperser (116), a rotating shaft (181) is coaxially arranged in the disperser (116), the lower end of the rotating shaft (181) is fixedly connected with the disperser (116), the upper end of the rotating shaft (181) is rotatably connected with a bearing in a bearing seat (180) arranged at the top of the tank body (111), a motor (182) is arranged at the top of the tank body (111), the output shaft of the motor (182) extends into the tank body (111) through the top plate of the tank body (111), a driving gear (183) is arranged at the extending end of the output shaft of the motor (182), and a driven gear (184) is arranged on each rotating shaft (181) and can be engaged with the driving gear (183) for transmission.
4. The MVR concentration milk fortifying system according to claim 1, wherein, The first air inlet (12) is connected with a steam supply pipeline.
5. The MVR concentration milk frothing system according to claim 3, wherein, The disperser (116) is a reverse conical shell.
6. The MVR concentration milk fortifying system according to claim 2, wherein, The evaporation pipe (115) is a conical pipe with a gradually decreasing diameter from top to bottom.