Milk sterilizer
By introducing a pump body into the milk sterilizer to achieve vertical circulation and blade stirring, combined with side heating pipes and bottom heating pipes, the problem of uneven temperature during milk sterilization is solved, ensuring sterilization effect and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LE MOO DAIRY HEFEI CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-26
AI Technical Summary
Existing milk sterilization equipment suffers from insufficient horizontal mixing, resulting in low-temperature dead zones at the bottom or corners of the tank, which cannot effectively kill bacteria. Localized high temperatures damage the components, and uneven temperatures lead to insufficient sterilization intensity, affecting product quality and production capacity.
A milk sterilizer was designed, which uses a pump to achieve vertical circulation of milk, combined with horizontal stirring of blades, and side heating tubes and bottom heating tubes to ensure uniform temperature distribution.
This achieves uniform temperature distribution in milk, effectively kills bacteria, improves product quality and safety, avoids low-temperature dead zones and localized high-temperature problems, and enhances production efficiency.
Smart Images
Figure CN224402797U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of milk production technology, specifically to a milk sterilization machine. Background Technology
[0002] Before the milk production process, it is sent to the dairy factory, where it undergoes raw material receiving and quality inspection to ensure that the milk quality meets the requirements. Fresh milk is then heat-sterilized to kill bacteria and extend its shelf life. Pasteurization involves heating the mixed raw materials to 68℃-70℃ and maintaining this temperature for about 30 minutes, which can kill pathogenic bacteria and the vast majority of non-pathogenic bacteria.
[0003] Milk typically requires stirring during heating to ensure even mixing and maintain quality. However, in milk processing, stirring devices often only achieve horizontal mixing, resulting in insufficient vertical mixing and uneven temperature, which can lead to a series of serious problems: 1. Low-temperature dead zones formed at the bottom or corners of the tank due to insufficient mixing, failing to effectively kill Salmonella, E. coli, etc., leading to excessive microbial levels; 2. Localized high temperatures damage components, causing irreversible aggregation of whey protein (β-lactoglobulin), affecting taste; 3. Uneven temperature results in insufficient sterilization in some areas, requiring extended sterilization time and reduced production capacity. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] In view of the shortcomings of the prior art, this utility model provides a milk sterilizer, which solves the problems mentioned in the background art.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a milk sterilizer includes a tank and a cover plate detachably mounted on the top of the tank. A motor is fixedly mounted on the top of the cover plate, and the output end of the motor extends into the tank and is fixedly connected to a drive rod. The drive rod is fixedly connected to blades evenly distributed around its circumference. A guiding cavity is formed at the bottom of the drive rod, and a sleeve block is fixedly fitted onto one end of the drive rod near the cover plate. Multiple through holes communicating with the guiding cavity are formed on the sleeve block, and a limiting groove communicating with the multiple through holes is formed at the top of the sleeve block. A positioning sleeve is fixedly connected to the bottom of the cover plate, and the lower end of the positioning sleeve is rotatably inserted into the limiting groove. A connecting groove is formed at the bottom of the positioning sleeve, communicating with the through holes. A pump body is fixedly mounted on the bottom of the cover plate, and a suction pipe is fixedly connected to the inlet end of the pump body, communicating with the connecting groove. A feeding pipe is fixedly connected to the outlet end of the pump body.
[0008] Preferably, the tank body has an inner cavity on its side wall, a spiral side heating pipe is fixedly connected to the circumferential side wall of the inner cavity, and a bottom heating pipe is fixedly installed at the bottom of the inner cavity.
[0009] Preferably, a discharge pipe is fixedly connected to the bottom of the tank, and a valve is installed on the discharge pipe.
[0010] Preferably, a feed pipe is connected to the top of the cover plate, and a cap is detachably installed on the top of the feed pipe.
[0011] Preferably, a plurality of vertically distributed thermometers are fixedly installed on the outer wall of the tank, and the metal detection end of the thermometer is inserted into the inside of the tank.
[0012] Preferably, the cross-section of the limiting groove is inverted T-shaped, and the cross-section of the end of the positioning sleeve located in the limiting groove is also inverted T-shaped.
[0013] (III) Beneficial Effects
[0014] This utility model provides a milk sterilizer, which has the following beneficial effects:
[0015] 1. In this utility model, by activating the pump body, milk located at the bottom of the tank is drawn into the guiding cavity. Then, the milk enters the connecting groove through multiple through holes, and finally enters the pump body through the suction pipe and is discharged through the pump body's feeding pipe. The entire process achieves the purpose of lifting the milk from low to high, realizing the vertical circulation of the milk. In addition, the horizontal stirring work of the blades makes the temperature distribution of the milk more uniform during sterilization. Therefore, it can effectively kill Salmonella, E. coli, etc., improve the taste, ensure food safety, and guarantee product quality.
[0016] 2. In this utility model, side heating pipes are provided on the side wall of the inner cavity and bottom heating pipes are provided at the bottom of the inner cavity, which can effectively improve the uniform heating effect inside the tank. The side heating pipes and bottom heating pipes can effectively cover the heat source requirements of the inner cavity and promote better heat transfer to the entire inner cavity. The arrangement of heating pipes can ensure that the temperature distribution in different parts of the tank is more uniform, avoiding the situation where there is a large temperature difference in some areas due to lack of heating. Attached Figure Description
[0017] Figure 1 This is a cross-sectional view of a milk sterilizer proposed in this utility model;
[0018] Figure 2 This is an external structural diagram of a milk sterilizer proposed in this utility model;
[0019] Figure 3 for Figure 1 Enlarged structural diagram at point A;
[0020] Figure 4 for Figure 1 Enlarged structural diagram at point B.
[0021] In the diagram: 1. Tank body; 101. Inner cavity; 2. Side heating pipe; 3. Bottom heating pipe; 4. Cover plate; 5. Feed pipe; 6. Pipe cap; 7. Motor; 8. Drive rod; 801. Conducting cavity; 9. Blade; 10. Discharge pipe; 11. Valve; 12. Sleeve block; 1201. Through hole; 1202. Limiting groove; 13. Positioning sleeve; 1301. Connecting groove; 14. Suction pipe; 15. Pump body; 16. Feeding pipe; 17. Thermometer. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Please see Figure 1 , Figure 3 This utility model provides a technical solution: a milk sterilizer, including a tank 1 and a cover plate 4 detachably installed on the top of the tank 1, which can be fixed with conventional bolts. The purpose of detachment is to maintain or clean the inside of the tank 1. A motor 7 is fixedly installed on the top of the cover plate 4. The output end of the motor 7 passes through the inside of the tank 1 and is fixedly connected to a drive rod 8. The drive rod 8 is fixedly connected with blades 9 distributed equidistantly around the circumference. A guide cavity 801 is opened at the bottom of the drive rod 8. A sleeve block 12 is fixedly fitted on the end of the drive rod 8 near the cover plate 4. Multiple blades 9 are opened on the sleeve block 12. The top of the sleeve block 12 has a through hole 1201 that communicates with the through cavity 801. A limiting groove 1202 that communicates with multiple through holes 1201 is provided on the top of the sleeve block 12. A positioning sleeve 13 is fixedly connected to the bottom of the cover plate 4. The lower end of the positioning sleeve 13 is rotatably inserted into the limiting groove 1202. A connecting groove 1301 is provided at the bottom of the positioning sleeve 13. The connecting groove 1301 communicates with the through hole 1201. A pump body 15 is fixedly installed at the bottom of the cover plate 4. A suction pipe 14 is fixedly connected to the liquid inlet end of the pump body 15. The suction pipe 14 communicates with the connecting groove 1301. A feeding pipe 16 is fixedly connected to the liquid outlet end of the pump body 15.
[0024] By activating the pump body 15, milk near the bottom of the tank 1 is drawn into the guiding cavity 801. Then, the milk enters the connecting groove 1301 through multiple through holes 1201, and finally enters the pump body 15 through the suction pipe 14, and is discharged through the feeding pipe 16 of the pump body 15. The whole process achieves the purpose of lifting the milk from low to high, realizing the vertical circulation of the milk, and making the temperature distribution of the milk more uniform during sterilization. Therefore, it can effectively kill Salmonella, E. coli, etc., improve the taste, ensure food safety, and guarantee product quality.
[0025] During the above process, motor 7 can be started simultaneously or separately. Motor 7 drives drive rod 8 to rotate, and drive rod 8 drives blade 9 to rotate to mix and stir the milk in a horizontal direction, so that the temperature distribution of the milk is more uniform during sterilization.
[0026] To further explain, a food-grade sealing ring is provided between the lower end of the positioning sleeve 13 and the limiting groove 1202 for sealing treatment to prevent liquid leakage from the gap between the two; the sleeve block 12 can rotate with the drive rod 8, so the lower end of the positioning sleeve 13 rotates relative to the limiting groove 1202.
[0027] The pump body 15 adopts one of the centrifugal pumps or diaphragm pumps, which is existing technology.
[0028] Reference Figure 1 The tank body 1 has an inner cavity 101 on its side wall. A spiral side heating pipe 2 is fixedly connected to the circumferential side wall of the inner cavity 101, and a bottom heating pipe 3 is fixedly installed at the bottom of the inner cavity 101.
[0029] By installing a side heating pipe 2 on the side wall of the inner cavity 101 and a bottom heating pipe 3 at the bottom of the inner cavity 101, the uniform heating effect inside the tank 1 can be effectively improved. The side heating pipe 2 and the bottom heating pipe 3 can effectively cover the heat source requirements of the inner cavity 101, promote better heat transfer to the entire inner cavity 101, and thus better heat the milk evenly. The arrangement of the heating pipes can ensure that the temperature distribution in different parts of the tank 1 is more uniform, and avoid the situation where there is a large temperature difference in some areas due to lack of heating.
[0030] Reference Figure 1 A discharge pipe 10 is fixedly connected to the bottom of the tank body 1, and a valve 11 is installed on the discharge pipe 10.
[0031] The discharge pipe 10 is located at the bottom of the tank 1 and is used to discharge milk from the tank 1. By adjusting the valve 11, the discharge flow rate can be controlled, or even the liquid discharge can be completely stopped. The discharge pipe 10 is usually connected to an external cooling system, such as a plate cooler or a cooling water bath, which is existing technology. It should be noted here that pasteurization involves heating the mixed raw materials to 68℃-70℃, maintaining this temperature for 30 minutes, and then rapidly cooling it to 4℃-5℃.
[0032] Reference Figure 1 and Figure 2 The top of the cover plate 4 is connected to the feed pipe 5, and the top of the feed pipe 5 is detachably fitted with a pipe cap 6.
[0033] The top of the cover plate 4 is equipped with a feed pipe 5. This design is to transport milk from the outside into the tank 1. The pipe cap 6 is set to prevent heat from dissipating from here during heating. It also has a dustproof function to prevent dust in the air from entering the inside of the tank 1.
[0034] Reference Figure 1 and Figure 4 Multiple vertically distributed thermometers 17 are fixedly installed on the outer wall of the tank body 1, and the metal detection end of the thermometer 17 is inserted into the tank body 1.
[0035] The design of multiple thermometers 17 provides multi-point monitoring of the internal temperature of the tank 1, ensuring that the temperature in different areas can be monitored in real time as much as possible. This multi-point temperature measurement can improve the accuracy of the data and detect local temperature changes within the tank 1. The thermometers 17 are existing technology and can monitor the temperature of milk in real time. For insert-type thermometers 17, a flange interface is usually required. One side of the flange is connected to the side of the tank 1, and the other side is used to fix the thermometer 17. Sealing materials such as gaskets and O-rings are used to seal the connection between the thermometer 17 and the tank 1.
[0036] Reference Figure 3 The cross-section of the limiting groove 1202 is inverted T-shaped, and the cross-section of the end of the positioning sleeve 13 located in the limiting groove 1202 is also inverted T-shaped.
[0037] The combination of the above structures ensures that the lower end of the positioning sleeve 13 can rotate relative to the limiting groove 1202 without detaching or falling off, and also ensures that it will not interfere with the vertical pumping operation of the pump body 15.
[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A milk sterilizer, characterized in that: The device includes a tank body (1) and a cover plate (4) detachably mounted on the top of the tank body (1). A motor (7) is fixedly mounted on the top of the cover plate (4). The output end of the motor (7) extends into the tank body (1) and is fixedly connected to a drive rod (8). A circumferentially distributed blade (9) is fixedly connected to the drive rod (8). A guide cavity (801) is provided at the bottom of the drive rod (8). A sleeve block (12) is fixedly fitted on one end of the drive rod (8) near the cover plate (4). A plurality of through holes (1201) communicating with the guide cavity (801) are provided on the sleeve block (12). A plurality of through holes (1201) communicating with the guide cavity (801) are provided on the top of the sleeve block (12). The limiting groove (1202) is connected to the hole (1201). The bottom of the cover plate (4) is fixedly connected to the positioning sleeve (13). The lower end of the positioning sleeve (13) is rotatably inserted into the limiting groove (1202). The bottom of the positioning sleeve (13) is provided with a connecting groove (1301). The connecting groove (1301) is connected to the through hole (1201). The bottom of the cover plate (4) is fixedly installed with a pump body (15). The inlet end of the pump body (15) is fixedly connected to a suction pipe (14). The suction pipe (14) is connected to the connecting groove (1301). The outlet end of the pump body (15) is fixedly connected to a feeding pipe (16).
2. The milk sterilizer according to claim 1, characterized in that: The tank (1) has an inner cavity (101) on its side wall. A spiral side heating pipe (2) is fixedly connected to the circumferential side wall of the inner cavity (101). A bottom heating pipe (3) is fixedly installed at the bottom of the inner cavity (101).
3. The milk sterilizer according to claim 1, characterized in that: The bottom of the tank (1) is fixedly connected to a discharge pipe (10), and a valve (11) is provided on the discharge pipe (10).
4. A milk sterilizer according to claim 1, characterized in that: The top of the cover plate (4) is connected to a feed pipe (5), and a cap (6) is detachably installed on the top of the feed pipe (5).
5. A milk sterilizer according to claim 1, characterized in that: Multiple vertically distributed thermometers (17) are fixedly installed on the outer wall of the tank (1), and the metal detection end of the thermometer (17) is inserted into the tank (1).
6. A milk sterilizer according to claim 1, characterized in that: The cross-section of the limiting groove (1202) is inverted T-shaped, and the cross-section of the end of the positioning sleeve (13) located in the limiting groove (1202) is also inverted T-shaped.