Milk product preheating device
By introducing stirring blades and an inert gas exhaust system into the dairy product preheating device, the problem of bubble accumulation during dairy product preheating was solved, achieving uniform preheating and non-destructive processing of dairy products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-10
AI Technical Summary
Dairy products are prone to generating bubbles during the preheating process, which can lead to accumulation inside the equipment and potentially cause dairy products to leak out, affecting processing efficiency and product quality.
A dairy product preheating device was designed, which includes a stirring mechanism and an exhaust system. The stirring blades stir the dairy product and puncture the air bubbles, while inert gas is used to exhaust the air in the preheating tank to ensure that the dairy product is sealed from the outside air.
This process ensures uniform preheating and stirring of dairy products, preventing air bubble accumulation and leakage, thus guaranteeing the quality of dairy products and smooth processing.
Smart Images

Figure CN223980386U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dairy processing technology, specifically to a dairy product preheating device. Background Technology
[0002] Preheating is an important step in the dairy production process. Preheating makes it easier for dairy products to reach the required temperature during subsequent processing, thereby improving the processing efficiency of the entire production line, ensuring product quality, and proper preheating can also kill some microorganisms, reducing the pressure of subsequent sterilization processes. At the same time, it also helps to maintain the nutritional components and flavor of dairy products.
[0003] During the preheating process of dairy products, the products are usually stirred at the same time. Because dairy products are relatively viscous, they are prone to generating many air bubbles during stirring. However, preheating devices generally do not have a defoaming structure, and a large number of air bubbles accumulate inside the device, which can easily cause dairy products to leak out. This not only causes inconvenience to dairy product processing but also results in waste of dairy products. Utility Model Content
[0004] The purpose of this invention is to provide a dairy product preheating device that can preheat dairy products while stirring them, and can eliminate air bubbles generated by stirring.
[0005] This utility model discloses a dairy product preheating device, comprising a preheating tank, a stirring mechanism, a support, and a heating jacket. The support is fixedly connected to the outer top surface of the preheating tank and is coaxial with the preheating tank. The top wall of the preheating tank is provided with an inlet and an outlet. The heating jacket is fixedly connected to the outer wall of the preheating tank, and a heating cavity is formed between the inner wall of the heating jacket and the outer wall of the preheating tank. The stirring mechanism includes a rotating shaft and stirring blades, both of which are located inside the preheating tank. The rotating shaft is coaxial with the preheating tank, and the top end of the rotating shaft is rotatably connected to the inner top surface of the preheating tank. The stirring blades are fixedly connected to the outer wall of the rotating shaft. The upper end of the rotating shaft extends through the top wall of the preheating tank and is rotatably connected to the support. The center of the support is provided with a through hole for the rotating shaft to rotate. A drive motor is fixedly connected to the top surface of the support, and the output shaft of the drive motor is rotatably connected to the through hole in the center of the support for the rotating shaft to rotate. The output shaft of the drive motor is fixedly connected to the rotating shaft.
[0006] Furthermore, a top plate is rotatably connected to the support, and a through hole is provided in the center of the top plate. The through hole in the center of the top plate is rotatably connected to the support, and the top plate is provided with two through holes that communicate with the feed port and the exhaust port.
[0007] Furthermore, the outer wall of the support is provided with a movable groove, and multiple steel balls are rotatably engaged in the movable groove. The outer walls of the multiple steel balls are rotatably connected to the inner wall of the central through hole of the top plate.
[0008] Furthermore, the stirring blade is provided with multiple holes, which are evenly distributed in a matrix on the stirring blade, and each of the multiple holes is connected to a poking needle.
[0009] Furthermore, a hot fluid inlet pipe is fixedly connected to the bottom wall of the heating jacket, and the hot fluid inlet pipe communicates with the heating cavity. A hot fluid outlet pipe is fixedly connected to the top wall of the heating jacket, and the hot fluid outlet pipe communicates with the heating cavity.
[0010] Furthermore, a discharge pipe is fixedly connected to the bottom wall of the preheating tank, the discharge pipe is connected to the inside of the preheating tank, and a discharge valve is connected to the discharge pipe.
[0011] Furthermore, a bearing is rotatably sleeved at the lower end of the shaft, and the bearing is fixedly connected to the inner wall of the preheating tank by two support legs.
[0012] Furthermore, multiple stirring blades are fixedly connected to the outer wall of the rotating shaft, and the multiple stirring blades are evenly distributed around the axis of the rotating shaft.
[0013] Furthermore, multiple movable grooves are provided on the outer wall of the support, and the multiple movable grooves are linearly and evenly distributed along the height direction of the support. Each movable groove is connected to multiple steel balls.
[0014] The beneficial effects of this invention are as follows: This invention uses a drive motor to rotate a shaft, which in turn rotates a stirring blade. The stirring blade stirs the dairy product, ensuring uniform mixing and preventing the formation of a viscous substance, thus facilitating subsequent processing. Simultaneously, the puncturing needle breaks air bubbles generated during stirring, preventing the accumulation of air bubbles in the preheating tank and thus preventing leakage of the dairy product, ensuring the normal operation of dairy product processing. This invention also connects the upper and lower exhaust ports by rotating the top plate, allowing inert gases such as nitrogen to be injected into the preheating tank. The inert gas displaces the air inside the preheating tank, sealing the dairy product with the outside air to prevent oxidation and ensure the quality of the dairy product remains intact. This invention achieves preheating of the dairy product and stirs it during preheating, preventing the formation of a viscous substance for subsequent processing. The puncturing needle breaks air bubbles generated during stirring, preventing the accumulation of air bubbles in the preheating tank and thus preventing leakage of the dairy product. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the present invention;
[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;
[0018] Figure 4 This utility model Figure 2 Enlarged view at point B in the middle;
[0019] In the diagram: 1. Preheating tank; 101. Inlet; 102. Exhaust port; 2. Stirring mechanism; 21. Rotating shaft; 22. Stirring blade; 221. Hole; 3. Support; 31. Movable groove; 4. Top plate; 5. Drive motor; 6. Heating jacket; 61. Hot fluid inlet pipe; 62. Hot fluid outlet pipe; 7. Steel ball; 8. Discharge pipe; 81. Discharge valve; 9. Stamping needle; 10. Bearing; 11. Support leg. Detailed Implementation
[0020] like Figures 1-4 As shown, this utility model discloses a dairy product preheating device comprising a preheating tank 1, a stirring mechanism 2, a support 3, and a heating sleeve 6. The support 3 is fixedly connected to the outer top surface of the preheating tank 1 and is coaxial with the preheating tank 1. The top wall of the preheating tank 1 is provided with an inlet 101 and an outlet 102. The heating sleeve 6 is fixedly connected to the outer wall of the preheating tank 1, and a heating cavity is formed between the inner wall of the heating sleeve 6 and the outer wall of the preheating tank 1. The stirring mechanism 2 includes a rotating shaft 21 and a stirring blade 22, both of which are located inside the preheating tank 1. The rotating shaft 21 is coaxial with the preheating tank 1, and the top end of the rotating shaft 21 is rotatably connected to the inner top surface of the preheating tank 1. The stirring blade 22 is fixedly connected to the outer wall of the rotating shaft 21. The upper end of the rotating shaft 21 extends through the top wall of the preheating tank 1 and is rotatably connected to the support 3. The center of the support 3 is provided with a through hole for the rotating shaft 21 to rotate through. A drive motor 5 is fixedly connected to the surface. The output shaft of the drive motor 5 is rotatably connected to the through hole in the center of the support 3, which is connected to the rotating shaft 21. The output shaft of the drive motor 5 is fixedly connected to the rotating shaft 21. A top plate 4 is rotatably connected to the support 3. The top plate 4 has a through hole in its center. The through hole in the center of the top plate 4 is rotatably connected to the support 3. The top plate 4 has two through holes that communicate with the feed inlet 101 and the exhaust outlet 102. A movable groove 31 is provided on the outer wall of the support 3. Multiple steel balls 7 are rolled and engaged in the movable groove 31. The outer wall of the multiple steel balls 7 is rotatably connected to the inner wall of the through hole in the center of the top plate 4. Multiple movable grooves 31 are provided on the outer wall of the support 3. The multiple movable grooves 31 are linearly and evenly distributed along the height direction of the support 3. Multiple steel balls 7 are connected in each movable groove 31. A bearing 10 is rotatably sleeved at the lower end of the rotating shaft 21. The bearing 10 is fixedly connected to the inner wall of the preheating tank 1 by two support legs 11.
[0021] Dairy products are fed into the preheating tank 1 through the feed inlet 101, and inert gases such as nitrogen are injected into the preheating tank 1 through the exhaust port 102. The inert gases can squeeze out the air in the preheating tank 1, sealing the dairy products inside with the outside air to prevent oxidation and ensure the quality of the dairy products remains intact. Through the rolling action of the steel balls 7 in the movable groove 31, the top plate 4 can easily rotate around the support 3. During the preheating of the dairy products, the drive motor 5 is turned on, and the output shaft of the drive motor 5 can drive the rotating shaft 21 to rotate. The rotation of the rotating shaft 21 drives the stirring blade 22 to rotate, which can stir the dairy products to make them evenly mixed and prevent them from forming a viscous substance, so as to facilitate subsequent processing.
[0022] Multiple stirring blades 22 are fixedly connected to the outer wall of the rotating shaft 21, and the multiple stirring blades 22 are evenly distributed around the axis of the rotating shaft 21.
[0023] The arrangement of multiple stirring blades 22 improves the stirring effect of dairy products.
[0024] A hot fluid inlet pipe 61 is fixedly connected to the bottom wall of the heating sleeve 6, and the hot fluid inlet pipe 61 communicates with the heating cavity. A hot fluid outlet pipe 62 is fixedly connected to the top wall of the heating sleeve 6, and the hot fluid outlet pipe 62 communicates with the heating cavity.
[0025] When preheating dairy products, hot fluids such as steam or heat transfer oil can be introduced into the heating jacket 6 through the hot fluid inlet pipe 61, and then the hot fluids can be discharged through the hot fluid outlet pipe 62. During this process, the hot fluids can heat the dairy products through the tank wall of the preheating tank 1.
[0026] A discharge pipe 8 is fixedly connected to the bottom wall of the preheating tank 1. The discharge pipe 8 is connected to the inside of the preheating tank 1, and a discharge valve 81 is connected to the discharge pipe 8.
[0027] After the dairy products are preheated, stop introducing hot fluid into the heating jacket 6, turn off the drive motor 5, then open the discharge valve 81 and discharge the dairy products from the preheating tank 1 through the discharge pipe 8.
[0028] Multiple stirring blades 22 are fixedly connected to the outer wall of the rotating shaft 21, and the multiple stirring blades 22 are evenly distributed around the axis of the rotating shaft 21.
[0029] The puncturing needle 9 can puncture the air bubbles generated during the stirring process, which can prevent air bubbles from accumulating in the preheating tank 1, thereby preventing the dairy products from leaking out and ensuring the normal operation of dairy product processing.
[0030] This invention enables the preheating of dairy products and the stirring of the dairy products during preheating to prevent the dairy products from forming a viscous substance, thus facilitating subsequent processing. The setting of the puncture needle 9 breaks the air bubbles generated during the stirring process, preventing the accumulation of air bubbles in the preheating tank 1, thereby preventing the dairy products from leaking out.
Claims
1. A dairy product pre-heating device, characterized by: The preheating tank (1), the stirring mechanism (2), the support (3) and the heating jacket (6), the support (3) is fixedly connected on the outer top surface of the preheating tank (1), the support (3) is coaxial with the preheating tank (1), the preheating tank (1) is provided with a feeding port (101) and an exhaust port (102) on the top wall, the heating jacket (6) is fixedly connected on the outer wall of the preheating tank (1), the heating cavity is formed between the inner wall of the heating jacket (6) and the outer wall of the preheating tank (1), the stirring mechanism (2) comprises a rotating shaft (21) and a stirring blade (22), the rotating shaft (21) and the stirring blade (22) are arranged in the preheating tank (1), the rotating shaft (21) is coaxial with the preheating tank (1), the top end of the rotating shaft (21) is rotatably connected to the inner top surface of the preheating tank (1), and the stirring blade (22) is fixedly connected to the outer wall of the rotating shaft (21); the upper end of the rotating shaft (21) penetrates through the top wall of the preheating tank (1) and is rotatably connected to the support (3), the support (3) is provided with a through hole for rotatably connecting the rotating shaft (21), the top surface of the support (3) is fixedly connected with a driving motor (5), the output shaft of the driving motor (5) is rotatably connected in the through hole of the support (3) for rotatably connecting the rotating shaft (21), and the output shaft of the driving motor (5) is fixedly connected with the rotating shaft (21); a plurality of holes (221) are arranged on the stirring blade (22), the plurality of holes (221) are arranged in a matrix on the stirring blade (22), and a plurality of pins (9) are connected in the plurality of holes (221).
2. A milk product preheating device according to claim 1, characterized in that: The support (3) is rotatably connected with a top disc (4), the top disc (4) is provided with a through hole in the center, the through hole in the center of the top disc (4) is rotatably connected to the support (3), and the top disc (4) is provided with two through holes communicating with the feeding port (101) and the exhaust port (102).
3. A milk product preheating device according to claim 2, characterized in that: The outer wall of the support (3) is provided with a movable groove (31), a plurality of steel balls (7) are rotatably clamped in the movable groove (31), and the outer wall of the plurality of steel balls (7) is rotatably connected with the inner wall of the through hole in the center of the top disc (4).
4. A milk product preheating device according to claim 3, characterised in that: The bottom wall of the heating jacket (6) is fixedly connected with a hot fluid inlet pipe (61), the hot fluid inlet pipe (61) communicates with the heating cavity, the top wall of the heating jacket (6) is fixedly connected with a hot fluid outlet pipe (62), and the hot fluid outlet pipe (62) communicates with the heating cavity.
5. A milk product preheating device according to any one of claims 1, 2, 3 or 4, characterized in that: The bottom wall of the preheating tank (1) is fixedly connected with a discharge pipe (8), the discharge pipe (8) communicates with the inside of the preheating tank (1), and the discharge pipe (8) is connected with a discharge valve (81).
6. A milk product preheating device according to claim 5, characterised in that: The lower end of the rotating shaft (21) is rotatably sleeved with a bearing (10), and the bearing (10) is fixedly connected to the inner wall surface of the preheating tank (1) through two supporting legs (11).
7. A milk product preheating device according to any one of claims 1, 2, 3, 4 or 6, characterized in that: The stirring blade (22) is fixedly connected to the outer wall of the rotating shaft (21), and the plurality of stirring blades (22) are arranged in a circumferential distribution with the axis of the rotating shaft (21) as the center.
8. A milk pre-heating device according to claim 3, characterized in that: The movable groove (31) is arranged on the outer wall of the support (3), the plurality of movable grooves (31) are linearly and uniformly arranged along the height direction of the support (3), and the plurality of steel balls (7) are connected in each movable groove (31).