A sterilization device for infant milk powder production

Abstract

The utility model belongs to the technical field of infant milk powder production, disclose a kind of sterilization device for infant milk powder production, including jar body, the top of jar body is equipped with feed inlet and steam outlet, the top of jar body is equipped with discharge port;Stirring and turnover mechanism, stirring and turnover mechanism includes main shaft, the lower part of main shaft is equipped with stirring paddle, the upper portion of main shaft is equipped with helical lifting blade by one-way bearing, and main shaft is driven by driving motor;Steam sterilization mechanism, steam sterilization mechanism includes annular steam pipe, and multiple steam injection holes are formed in annular steam pipe;Ultraviolet auxiliary sterilization mechanism, ultraviolet auxiliary sterilization mechanism includes multiple ultraviolet tubes.The utility model is through the synergies of steam high-temperature sterilization and ultraviolet low-temperature sterilization, reduce single high temperature to heat-sensitive nutrition destruction, ensure pathogenic bacteria inactivation rate simultaneously, again combine dynamic stirring and promote design, can avoid the coking problem of traditional static sterilization, and can reduce nutrient loss.

Description

Technical Field

[0001] This utility model relates to the field of infant formula production technology, and in particular to a sterilization device for infant formula production. Background Technology

[0002] In the production process of infant formula, sterilization is a crucial step. Its purpose is to eliminate pathogenic bacteria and harmful microorganisms in raw milk or semi-finished products to ensure the safety of infants.

[0003] Currently, the sterilization technologies widely used in the industry are mainly high-temperature instantaneous sterilization or pasteurization. Although these methods have good sterilization effects, they generally have the following problems: 1) Heat damage: High-temperature treatment will inevitably destroy heat-sensitive nutrients such as whey protein, immunoglobulin, and vitamins, affecting the nutritional value of milk powder. 2) Dead zones and unevenness: Traditional tubular or plate heat exchangers are prone to coking or fouling after long-term operation, forming sterilization dead zones and resulting in uneven sterilization. Therefore, we propose a sterilization device for infant formula production. Utility Model Content

[0004] In view of the problems of heat damage, dead zones and unevenness in the existing sterilization devices used for infant formula production, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A sterilization device for the production of infant formula includes a tank, the top of which is equipped with a connected inlet and a steam outlet, and the top of which is equipped with a connected outlet. A stirring and turning mechanism includes a main shaft that is vertically arranged and rotatably mounted on the tank body. A stirring blade is installed on the lower part of the main shaft, and a spiral lifting blade is installed on the upper part of the main shaft through a one-way bearing. The main shaft is driven by a drive motor. A steam sterilization mechanism, the steam sterilization mechanism including an annular steam pipe installed around the inside of the tank, the annular steam pipe having a plurality of steam nozzles; An ultraviolet-assisted sterilization mechanism, comprising multiple ultraviolet lamps installed on the top of the tank.

[0006] As a technical solution of the sterilization device for infant formula production described in this utility model, the tank body is equipped with a jacket, and the jacket is connected to an air inlet pipe and an air outlet pipe.

[0007] As a technical solution of the sterilization device for infant formula production described in this utility model, wherein: an inner sleeve is installed inside the tank, and the inner wall of the inner sleeve is close to the outer edge of the spiral lifting blade.

[0008] As a technical solution of the sterilization device for infant formula production described in this utility model, the upper end of the inner sleeve is an open structure and the lower end is a closed structure, and multiple through holes are provided on the closed structure.

[0009] As a technical solution of the sterilization device for infant formula production described in this utility model, the spiral lifting blade is connected to the main shaft through the one-way bearing in the following way: when the main shaft rotates forward, the spiral lifting blade meshes with the main shaft to rotate and lift the material; when the main shaft rotates in reverse, the spiral lifting blade spins freely on the one-way bearing.

[0010] As a technical solution of the sterilization device for infant formula production described in this utility model, the annular steam pipe is connected and communicates with the steam inlet pipe that penetrates the side wall of the tank through a rotary joint.

[0011] As a technical solution of the sterilization device for infant formula production described in this utility model, a plurality of ultraviolet lamps are arranged symmetrically, and the ultraviolet lamps are electrically connected to an external power source through wires.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model reduces the damage to heat-sensitive nutrients caused by high-temperature steam sterilization and low-temperature ultraviolet sterilization through the synergistic effect of high-temperature sterilization alone, while ensuring the inactivation rate of pathogenic bacteria. Combined with dynamic stirring and lifting design, it can avoid the scorching problem of traditional static sterilization and reduce nutrient loss.

[0013] 2. This utility model, through the annular steam pipe, the symmetrical layout of the ultraviolet lamps, and the inner sleeve guide structure, can eliminate sterilization dead corners to improve sterilization uniformity. Combined with the forward and reverse rotation mechanism driven by the one-way bearing, it can reduce energy consumption, thereby improving material circulation efficiency and reducing energy consumption per unit output. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] Figure 4 This is a schematic diagram of the mixing and turning mechanism of this utility model.

[0018] Explanation of reference numerals in the attached figures: In the diagram: 1. Tank body; 101. Feed inlet; 102. Steam outlet; 103. Discharge outlet; 201. Main shaft; 202. Spiral lifting blade; 203. Agitator blade; 204. Drive motor; 3. One-way bearing; 4. Jacket; 5. Inner sleeve; 501. Through hole; 6. Annular steam pipe; 601. Steam nozzle; 602. Steam inlet pipe; 7. Ultraviolet lamp. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Reference Figures 1-4 A sterilization device for infant formula production is provided. This sterilization device includes a tank 1 made of stainless steel. The tank 1 integrates a PLC control module, which integrates temperature, speed, and ultraviolet switch logic. The set parameters are: sterilization temperature 72-75℃ (pasteurization standard), time 15-20 minutes, ultraviolet lamp is turned on after steam sterilization and runs for 5 minutes. The top of the tank 1 is equipped with a connected feed inlet 101 and a steam outlet 102, and the top of the tank 1 is equipped with a connected discharge outlet 103. The mixing and turning mechanism includes a main shaft 201 that is vertically set and rotatably mounted on the tank body 1. A mixing blade 203 is installed at the lower part of the main shaft 201, and a spiral lifting blade 202 is installed at the upper part of the main shaft 201 through a one-way bearing 3. The main shaft 201 is driven by a drive motor 204 (such as a servo motor). One end of the main shaft 201 is connected to the output shaft of the drive motor 204 through a coupling. The forward rotation speed is 20-30 rpm (lifting materials), and the reverse rotation speed is 10-15 rpm (stirring). In application, the forward and reverse rotation of the main shaft 201, in conjunction with the one-way bearing 3, controls the spiral lifting blade 202 to achieve material circulation and turning (forward rotation for lifting, reverse rotation for stirring), avoiding sedimentation and improving sterilization uniformity. The steam sterilization mechanism includes an annular steam pipe 6 installed around the inside of the tank 1, with a steam pressure of 0.2-0.3MPa. The annular steam pipe 6 has multiple steam nozzles 601 with a diameter of 1mm and a spacing of 50mm. In application, the annular steam pipe 6, in conjunction with the multiple steam nozzles 601, achieves 360° steam coverage and eliminates sterilization dead angles. The ultraviolet-assisted sterilization mechanism includes multiple ultraviolet lamps 7 installed on the top of the tank 1. In application, the ultraviolet lamps 7 supplement sterilization, especially for heat-resistant microorganisms, forming a multi-mode synergistic sterilization effect.

[0021] Reference Figure 1 and Figure 2 The tank body 1 is equipped with a jacket 4, which is connected to an air inlet pipe and an air outlet pipe. The air inlet pipe is connected to an external steam source, and the air outlet pipe is connected to an external condensate recovery system. In application, the jacket 4 regulates the temperature of the tank body 1 through the air inlet / air outlet pipes to maintain a stable sterilization environment and avoid changes in material humidity caused by steam condensation.

[0022] Reference Figure 2 and Figure 3 The tank body 1 is equipped with an inner sleeve 5. The inner wall of the inner sleeve 5 is close to the outer edge of the spiral lifting blade 202. The gap between the inner sleeve 5 and the spiral lifting blade 202 is ≤5mm. The upper end of the inner sleeve 5 is an open structure, and the lower end is a closed structure. Multiple through holes 501 are provided on the closed structure. In application, the inner sleeve 5 guides the material lifted by the spiral lifting blade 202 to fall from the top, extending the sterilization path. At the same time, the through holes 501 at the lower end promote material circulation and avoid local overheating or insufficient sterilization.

[0023] Reference Figure 2 and Figure 4 The spiral lifting blade 202 is connected to the main shaft 201 via a one-way bearing 3 as follows: when the main shaft 201 rotates forward, the spiral lifting blade 202 meshes with the main shaft 201 to lift the material; when the main shaft 201 rotates in reverse, the spiral lifting blade 202 idles on the one-way bearing 3. In application, the material is lifted when rotating forward, and only the stirring blade 203 works when rotating in reverse, realizing a cycle of lifting, scattering and stirring to improve heat transfer efficiency.

[0024] Reference Figure 2 and Figure 3 The annular steam pipe 6 is connected to and communicates with the steam inlet pipe 602 that penetrates the side wall of the tank 1 through a rotary joint. In application, the rotary joint prevents the annular steam pipe 6 from getting tangled, ensuring that the steam is continuously and evenly injected, which is suitable for long-term operation.

[0025] Reference Figure 2 and Figure 3Multiple UV lamps 7 are symmetrically arranged and electrically connected to an external power source via wires. The UV lamps 7 have a wavelength of 254nm, are symmetrically installed on the top of the can, have a power of 30W / lamp, and an irradiation distance of ≤30cm. In application, the symmetrical layout enhances the UV coverage, reduces the shaded area, and improves the auxiliary sterilization effect.

[0026] The working principle of this utility model is as follows: Preparation stage: First, confirm the sealing of the steam pipe, the function of the ultraviolet lamp 7, and the rotation of the drive motor 204. Then, introduce steam through the jacket 4 to preheat the tank to 1 to 60°C. Operation phase: First, the raw milk is injected into the tank 1 through the feed inlet 101 to fill 70%-80% of the volume. Then, the drive motor 204 is started to rotate forward (20 rpm). At this time, the drive motor 204 drives the main shaft 201 to rotate forward. The main shaft 201 drives the spiral lifting blades 202 to lift the material. At the same time, steam is injected through the annular steam pipe 6 until the temperature reaches 72℃ and is maintained for 15 minutes. During this period, the main shaft 201 intermittently rotates forward and reverse (switching every 3 minutes). Finally, the steam is turned off and the ultraviolet lamp tube 7 is turned on to irradiate for 5 minutes. Discharge and cleaning stage: The reverse drive motor 204 drives the main shaft 201 (10rpm) to reverse and stir. The discharge port 103 is opened to discharge the sterilized milk. Then, 80℃ hot water is introduced and circulated for 10 minutes. The ultraviolet lamp 7 needs to be powered off for protection.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sterilization device for the production of infant formula, characterized in that: include: The tank (1) has a connected feed inlet (101) and a steam outlet (102) installed on its top, and a connected discharge outlet (103) installed on its top. The mixing and turning mechanism includes a main shaft (201) that is vertically arranged and rotatably installed on the tank (1). A stirring blade (203) is installed on the lower part of the main shaft (201), and a spiral lifting blade (202) is installed on the upper part of the main shaft (201) through a one-way bearing (3). The main shaft (201) is driven by a drive motor (204). A steam sterilization mechanism, the steam sterilization mechanism including an annular steam pipe (6) surrounding and installed inside the tank (1), the annular steam pipe (6) having a plurality of steam nozzles (601). The ultraviolet-assisted sterilization mechanism includes multiple ultraviolet lamps (7) installed on the top of the tank (1).

2. The sterilization device for infant formula production according to claim 1, characterized in that: The tank (1) is equipped with a jacket (4) inside, and the jacket (4) is connected to an air inlet pipe and an exhaust pipe.

3. The sterilization device for infant formula production according to claim 1, characterized in that: The tank (1) is equipped with an inner sleeve (5), and the inner wall of the inner sleeve (5) is close to the outer edge of the spiral lifting blade (202).

4. The sterilization device for infant formula production according to claim 3, characterized in that: The inner sleeve (5) has an open structure at the upper end and a closed structure at the lower end, and multiple through holes (501) are provided on the closed structure.

5. The sterilization device for infant formula production according to claim 1, characterized in that: The spiral lifting blade (202) is connected to the main shaft (201) via the one-way bearing (3) in the following way: when the main shaft (201) rotates forward, the spiral lifting blade (202) meshes with the main shaft (201) to rotate and lift the material; when the main shaft (201) rotates in reverse, the spiral lifting blade (202) spins freely on the one-way bearing (3).

6. The sterilization device for infant formula production according to claim 1, characterized in that: The annular steam pipe (6) is connected and communicates with the steam inlet pipe (602) that runs through the side wall of the tank (1) via a rotary joint.

7. The sterilization device for infant formula production according to claim 1, characterized in that: The multiple ultraviolet lamps (7) are arranged symmetrically, and the ultraviolet lamps (7) are electrically connected to an external power source through wires.

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