Vacuum drying tank for milk powder
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGHAI ZANGBA DAIRY CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional milk powder drying tanks use a single temperature for drying, which leads to uneven drying, low thermal efficiency, unstable product quality, high energy consumption, and is prone to overheating, resulting in the destruction of milk powder nutrients.
A layered heating system is adopted, dividing the tank into multiple zones, each with a different temperature setting. It combines infrared radiation plates, heat-conducting oil pipes, and honeycomb heating plates for precise heating, utilizes spiral heat exchange tubes to recover heat, and optimizes the drying process by combining spiral plate agitation and vibrators.
This method optimizes temperature uniformity and energy utilization during the milk powder drying process, improves product quality, reduces energy consumption, and shortens drying time.
Smart Images
Figure CN224402800U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of drying tank technology, specifically a vacuum drying tank for milk powder. Background Technology
[0002] Milk powder drying tanks are core equipment in milk powder production, mainly used to convert liquid milk (concentrated milk or formula milk) into dry milk powder particles through high-temperature drying technology.
[0003] However, traditional milk powder drying tanks often use a single temperature for drying, which can easily lead to problems such as "overheating in the early stage and insufficient drying in the later stage". In addition, traditional drying tanks do not have heat conduction optimization, resulting in uneven temperature and low thermal efficiency, which leads to unstable product quality. Utility Model Content
[0004] To address the problems mentioned in the background art, this utility model provides a milk powder vacuum drying tank to solve the problems of high energy consumption and low efficiency of milk powder drying tanks, as well as the contradiction between temperature uniformity and heat sensitivity degradation.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a milk powder vacuum drying tank, characterized in that it includes a tank body, a vacuum pump, and a base. The tank body is composed of multiple cylindrical sections, each section dividing the tank body into a primary zone, a secondary zone, and a tertiary zone from top to bottom. The temperature of each zone is different. A vent pipe is provided on the tank body, which connects to the inside of the tank body. The vacuum pump is connected to the vent pipe, and the base is installed at the bottom of the tank body.
[0006] Optionally, an infrared radiation plate is provided on the inner wall of the cylindrical section where the primary zone is located, a heat-conducting oil pipe is embedded in the inner wall of the cylindrical section where the secondary zone is located, and a honeycomb heating plate is installed on the inner wall of the cylindrical section where the tertiary zone is located.
[0007] Optionally, a spiral heat exchange tube is provided on the outer surface of the tank, the spiral heat exchange tube covering the primary zone, the secondary zone and the tertiary zone, and the spiral heat exchange tube is connected to the interior of the primary zone.
[0008] Optionally, a spiral plate is provided inside the tank, the spiral plate is engaged with the tank, a rotating shaft is connected to the middle hole of the spiral plate, and a humidity sensor is provided at the top of the rotating shaft.
[0009] Optionally, a temperature sensor is provided on the surface of the cylindrical section.
[0010] Optionally, the top of the tank is provided with a flange cover, which is cylindrical and has a pull rod.
[0011] Optionally, a filter screen is provided at the bottom of the tank, and the filter screen is installed in the third-level zone area.
[0012] Optionally, the base is provided with a shock-absorbing pad at the bottom, a vibrator is provided on the side of the base, and a conical opening is provided in the middle of the base, with the conical opening connected to a filter screen.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] In this invention, the tank is composed of multiple cylindrical sections, each dividing the tank into three zones from top to bottom: a primary zone, a secondary zone, and a tertiary zone. Each zone has a different temperature. The primary zone, with its high temperature (50-60℃), accelerates the vaporization of surface moisture in the concentrated milk. The secondary zone, with its stable temperature (40-50℃), maintains the rate of moisture diffusion. The tertiary zone, with its low temperature (30-40℃), protects the heat-sensitive components of the milk, allowing residual moisture to be removed gently. Compared to traditional drying tanks with a single temperature, which initially result in insufficient temperature leading to slow evaporation of milk moisture and high energy consumption, and later overheating causing protein denaturation, lactose caramelization, and charring on the surface of particles, this method offers a superior solution. The solubility decreases, damaging the nutritional value of the milk powder. Furthermore, the inner wall of the cylindrical section containing the first-level zone is equipped with an infrared radiation plate, the inner wall of the cylindrical section containing the second-level zone contains a heat-conducting oil pipe, and the inner wall of the cylindrical section containing the tertiary zone is equipped with a honeycomb heating plate. Infrared radiation heating utilizes infrared rays to penetrate the surface of the milk powder and directly heat the internal moisture. The heat-conducting oil pipe maintains a uniform temperature field through stable heat conduction. The honeycomb heating plate increases the contact area of the milk powder, enhancing the drying efficiency at the end of the drying process. By establishing a layered heating system, the drying tank can precisely match the temperature change requirements of the material drying, thereby significantly improving product quality, reducing energy consumption, and shortening drying time.
[0015] In this utility model, a spiral heat exchange tube is provided on the outer surface of the tank. The spiral heat exchange tube covers the primary zone, the secondary zone and the tertiary zone. The spiral heat exchange tube is connected to the interior of the primary zone. The heating exhaust gas in the primary zone preheats the cylinder section temperature of the secondary zone and the tertiary zone through the spiral heat exchange tube, so that the device can specifically recover the waste heat in the primary zone, thereby further optimizing the energy utilization rate of the entire device.
[0016] In this invention, a spiral plate is installed inside the tank, and the spiral plate is snapped into the tank. A rotating shaft is connected to the middle hole of the spiral plate, and a humidity sensor is installed on the top of the rotating shaft. A temperature sensor is installed on the surface of the cylindrical section. The humidity sensor can detect the moisture level in the drying tank in real time, and the temperature sensor can regulate and detect the temperature of the three areas in real time. When the humidity sensor detects that the moisture in the milk reaches a certain standard, it can send a signal to drive the rotating shaft to start rotating, which drives the spiral plate to stir the milk powder, so that the milk powder is heated more evenly and the quality is higher in the tank. Moreover, the automated spiral plate can make the milk powder drying efficiency higher.
[0017] The base of this invention is provided with a shock-absorbing pad at the bottom, a vibrator on the side of the base, and a conical opening in the middle of the base. The conical opening is connected to a filter screen. The base vibrates the milk powder through the vibrator, causing the milk powder to fall from the filter screen through the conical opening and finally enter the production line. The shock-absorbing pad can make the entire device more stable. Attached Figure Description
[0018] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a bottom view of the overall structure of this utility model;
[0020] Figure 3 This is a top view schematic diagram of the overall structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the tank structure in this utility model;
[0022] Figure 5 This is a schematic diagram of the interior of the tank in this utility model;
[0023] In the picture:
[0024] 1. Tank body; 2. Vacuum pump; 3. Base; 4. Cylindrical section; 5. Primary zone; 6. Secondary zone; 7. Tertiary zone; 8. Vent pipe; 9. Infrared radiation plate; 10. Heat transfer oil pipe; 11. Honeycomb heating plate; 12. Spiral heat exchange tube; 13. Spiral plate; 14. Shaft; 15. Humidity sensor; 16. Temperature sensor; 17. Flange cover; 18. Tie rod; 19. Filter screen; 20. Anti-vibration pad; 21. Vibrator; 22. Conical inlet. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] like Figures 1 to 5 As shown, this utility model provides a milk powder vacuum drying tank, characterized in that it includes a tank body 1, a vacuum pump 2 and a base 3. The tank body 1 is composed of multiple cylindrical sections 4, each cylindrical section 4 dividing the tank body 1 from top to bottom into a primary zone 5, a secondary zone 6 and a tertiary zone 7, each zone having a different temperature. A vent pipe 8 is provided on the tank body 1, which connects to the inside of the tank body 1. The vacuum pump 2 is connected to the vent pipe 8. The base 3 is installed at the bottom of the tank body 1.
[0027] The above-mentioned solution: In this utility model, the tank 1 is composed of multiple cylindrical sections 4. Each cylindrical section 4 divides the tank 1 from top to bottom into a primary zone 5, a secondary zone 6, and a tertiary zone 7. The temperature of each zone is different. The primary zone 5 has a high temperature (50-60℃) to accelerate the vaporization of water on the surface of the concentrated milk. The secondary zone 6 has a stable temperature (40-50℃) to maintain the rate of water diffusion. The tertiary zone 7 has a low temperature (30-40℃) to protect the heat-sensitive components of the milk, so that the residual water is removed gently. Compared with the single temperature of traditional drying tanks, the initial insufficient temperature leads to slow evaporation of milk water and high energy consumption. Overheating in the later stage causes protein denaturation and lactose caramelization, which can also lead to particle surface damage. Coking and decreased solubility damage the nutritional value of milk powder. Furthermore, an infrared radiation plate 9 is installed on the inner wall of the cylindrical section 4 where the first-level zone 5 is located, a heat-conducting oil pipe 10 is embedded in the inner wall of the cylindrical section 4 where the second-level zone 6 is located, and a honeycomb heating plate 11 is installed on the inner wall of the cylindrical section 4 where the tertiary zone 7 is located. Infrared radiation heating utilizes infrared rays to penetrate the surface of the milk powder and directly heat the internal moisture. The heat-conducting oil pipe 10 maintains a uniform temperature field through stable heat conduction, and the honeycomb heating plate 11 increases the contact area of the milk powder, enhancing the drying efficiency at the end of the drying process. By establishing a layered heating system, the drying tank can precisely match the temperature change requirements of material drying, thereby significantly improving product quality, reducing energy consumption, and shortening drying time.
[0028] An infrared radiation plate 9 is provided on the inner wall of the cylindrical section 4 where the first-level zone 5 is located, a heat-conducting oil pipe is embedded in the inner wall of the cylindrical section 4 where the second-level zone 6 is located, and a honeycomb heating plate 11 is installed on the inner wall of the cylindrical section 4 where the third-level zone 7 is located.
[0029] Using the above solution: vacuum pumps can lower the boiling point of water and improve heat utilization.
[0030] The outer surface of the tank body 1 is provided with a spiral heat exchange tube 12, which covers the primary zone 5, the secondary zone and the tertiary zone 7, and the spiral heat exchange tube 12 is connected to the interior of the primary zone 5.
[0031] The above solution is adopted: In this utility model, a spiral heat exchange tube 12 is provided on the outer surface of the tank 1. The spiral heat exchange tube 12 covers the first-level zone 5, the second-level zone 6 and the third-level zone 7. The spiral heat exchange tube 12 is connected to the interior of the first-level zone 5. The heating waste gas in the first-level zone 5 preheats the temperature of the cylinder section 4 of the second-level zone 6 and the third-level zone 7 through the spiral heat exchange tube 12, so that the device can specifically recover the waste heat of the first-level zone 5, thereby further optimizing the energy utilization rate of the entire device.
[0032] The tank body 1 is equipped with a spiral plate 13, which is snapped into the tank body 1. A rotating shaft 14 is connected to the middle hole of the spiral plate 13, and a humidity sensor 15 is installed on the top of the rotating shaft 14.
[0033] A temperature sensor 16 is provided on the surface of the cylindrical section 4.
[0034] The above solution is as follows: In this utility model, a spiral plate 13 is installed inside the tank 1. The spiral plate 13 is snapped into the tank 1. A rotating shaft 14 is connected to the middle hole of the spiral plate 13. A humidity sensor 15 is installed on the top of the rotating shaft 14. A temperature sensor 16 is installed on the surface of the cylindrical section 4. The humidity sensor 15 can detect the moisture level in the drying tank in real time. The temperature sensor 16 can regulate and detect the temperature of the three areas in real time. When the humidity sensor 15 detects that the moisture in the milk reaches a certain standard, it can send a signal to drive the rotating shaft 14 to start rotating, which drives the spiral plate 13 to stir the milk powder, so that the milk powder is heated more evenly and the quality is higher in the tank 1. Moreover, the automated spiral plate can make the milk powder drying efficiency higher.
[0035] The top of the tank body 1 is provided with a flange cover 17, which is cylindrical and has a pull rod 18.
[0036] A filter screen 19 is provided at the bottom of the tank body 1, and the filter screen 19 is installed in the area of the third-level zone 7.
[0037] The base 3 has a shock-absorbing pad 20 at the bottom, a vibrator 21 on the side of the base 3, and a conical opening 22 in the middle of the base 3, which is connected to a filter screen 19.
[0038] The above solution is adopted: the bottom of the base 3 in this utility model is provided with a shock-absorbing pad 20, the side of the base 3 is provided with a vibrator 21, and the middle of the base 3 is provided with a conical opening 22. The conical opening 22 is connected to the filter screen 19. The base 3 vibrates the milk powder through the vibrator 21, causing the milk powder to fall from the filter screen 19 through the conical opening 22 and finally enter the production line. The shock-absorbing pad 20 can make the whole device more stable.
[0039] The working principle and usage process of this utility model: The cylindrical section 4 divides the tank 1 into three zones from top to bottom: a primary zone 5, a secondary zone 6, and a tertiary zone 7. Each zone has a different temperature. The primary zone 5, with its high temperature (50-60℃), accelerates the vaporization of surface moisture in the concentrated milk. The secondary zone 6 maintains a stable temperature (40-50℃) to preserve the moisture diffusion rate. The tertiary zone 7, with its low temperature (30-40℃), protects the heat-sensitive components of the milk, allowing residual moisture to be gently removed. Compared to traditional drying tanks with a single temperature, where the initial insufficient temperature leads to slow evaporation of milk moisture and high energy consumption, and overheating in later stages causes protein denaturation and lactose caramelization... This can also lead to coking on the particle surface, decreased solubility, and damage to the nutritional value of the milk powder. Furthermore, an infrared radiation plate 9 is installed on the inner wall of the cylindrical section 4 where the first-level zone 5 is located; a heat-conducting oil pipe 10 is embedded in the inner wall of the cylindrical section 4 where the second-level zone 6 is located; and a honeycomb heating plate 11 is installed on the inner wall of the cylindrical section 4 where the tertiary zone 7 is located. Infrared radiation heating utilizes infrared rays to penetrate the surface of the milk powder and directly heat the internal moisture. The heat-conducting oil pipe 10 maintains a uniform temperature field through stable heat conduction. The honeycomb heating plate 11 increases the contact area of the milk powder and enhances the drying efficiency at the end of the drying process. By establishing a layered heating system, the drying tank can precisely... To match the temperature changes required for material drying, thereby significantly improving product quality, reducing energy consumption, and shortening drying time, a spiral heat exchange tube 12 is installed on the outer surface of the tank body 1. The spiral heat exchange tube 12 covers the primary zone 5, the secondary zone 6, and the tertiary zone 7, and is connected to the interior of the primary zone 5. The heating exhaust gas in the primary zone 5 preheats the temperature of the cylinder section 4 of the secondary zone 6 and the tertiary zone 7 through the spiral heat exchange tube 12, allowing the device to specifically recover the waste heat from the primary zone 5, thereby further optimizing the energy utilization rate of the entire device. In this utility model, a spiral plate 13 is installed inside the tank body 1. Plate 13 is snapped into tank 1. A rotating shaft 14 is connected to the middle hole of spiral plate 13. A humidity sensor 15 is installed on the top of rotating shaft 14, and a temperature sensor 16 is installed on the surface of cylinder section 4. Humidity sensor 15 can detect the moisture level in the drying tank in real time, and temperature sensor 16 can regulate and detect the temperature of three areas in real time. When humidity sensor 15 detects that the moisture in the milk reaches a certain standard, it can send a signal to drive rotating shaft 14 to start rotating, which drives spiral plate 13 to stir milk powder, so that milk powder is heated more evenly and of higher quality in tank 1. Moreover, the automated spiral plate can make milk powder drying more efficient.
[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A vacuum drying container for milk powder, characterized in that, The system includes a tank (1), a vacuum pump (2), and a base (3). The tank (1) is composed of multiple cylindrical sections (4). Each cylindrical section (4) divides the tank (1) into a primary zone (5), a secondary zone (6), and a tertiary zone (7) from top to bottom. The temperature of each zone is different. A vent pipe (8) is provided on the tank (1) and connects to the inside of the tank (1). The vacuum pump (2) is connected to the vent pipe (8). The base (3) is installed at the bottom of the tank (1).
2. The milk powder vacuum drying container according to claim 1, characterized in that, An infrared radiation plate (9) is provided on the inner wall of the cylinder section (4) where the first-level zone (5) is located, a heat-conducting oil pipe (10) is embedded in the inner wall of the cylinder section (4) where the second-level zone (6) is located, and a honeycomb heating plate (11) is installed on the inner wall of the cylinder section (4) where the third-level zone (7) is located.
3. The vacuum drying container for milk powder according to claim 1, characterized in that, The tank body (1) is provided with a spiral heat exchange tube (12) on its outer surface. The spiral heat exchange tube (12) covers the first-level zone (5), the second-level zone and the third-level zone (7), and the spiral heat exchange tube (12) is connected to the interior of the first-level zone (5).
4. A vacuum drying jar for milk powder according to claim 1, characterized in that, The tank (1) is equipped with a spiral plate (13) inside, which is engaged with the tank (1). A rotating shaft (14) is connected to the middle hole of the spiral plate (13), and a humidity sensor (15) is installed on the top of the rotating shaft (14).
5. A vacuum drying jar for milk powder according to claim 1, characterized in that, A temperature sensor (16) is provided on the surface of the cylindrical section (4).
6. A vacuum drying jar for milk powder according to claim 1, characterized in that, The tank body (1) is provided with a flange cover (17) on the top. The flange cover (17) is cylindrical and a pull rod (18) is provided on the flange cover (17).
7. A vacuum drying jar for milk powder according to claim 1, characterized in that, The bottom of the tank (1) is provided with a filter screen (19), which is installed in the area of the third-level zone (7).
8. A vacuum drying container for milk powder according to claim 1, characterized in that, The base (3) is provided with a shock-absorbing pad (20) at the bottom, a vibrator (21) is provided on the side of the base (3), and a conical opening (22) is provided in the middle of the base (3), which is connected to a filter screen (19).