High-efficiency steam sterilizer

Abstract

The utility model relates to food processing technical field, concretely relates to a high -efficient steam sterilizing pot, including the kettle body and install in the steam heating pipeline of kettle body inside, and the steam heating pipeline includes the multiple steam main pipes of setting in the upper end, lower end and horizontal middle section side end in the kettle body inside, every steam main pipe is connected with a plurality of steam branch pipes along its length direction, and a plurality of steam nozzles are arranged on the steam branch pipe, and the kettle body inner wall is fixed with the fairlead board for guiding the steam flow direction near every steam main pipe place, the utility model discloses can realize even, high -efficient steam sterilization effect.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, specifically to a high-efficiency steam sterilizer. Background Technology

[0002] In the industrial production of bagged soymilk, steam sterilizers are crucial equipment for ensuring product safety and shelf life. Existing technology, such as the utility model patent with authorization announcement number CN207011621U, discloses a sterilizer for bagged soymilk. This equipment adopts a horizontal pot structure and sterilizes the soymilk by setting steam heating pipes at both the upper and lower ends of the pot body. The steam injection pipes are parallel to the axial direction of the pot body, attempting to achieve uniform heating.

[0003] However, in practical applications, this structure has inherent limitations. Because its steam nozzles are only distributed at the top and bottom of the pot, the steam flow cannot effectively penetrate and circulate between stacked bags of soy milk, especially in the central area and lateral spaces of the pot, easily creating uneven heat distribution "dead zones." This uneven heating directly leads to incomplete sterilization of some products, posing a quality risk. Furthermore, extending the sterilization time to ensure sterilization effectiveness reduces overall production efficiency and energy economy.

[0004] Therefore, the industry urgently needs a steam sterilization solution that can achieve uniform and efficient internal heating. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a high-efficiency steam sterilizer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-efficiency steam sterilizer includes a pot body and a steam heating pipe installed inside the pot body. The steam heating pipe includes multiple main steam injection pipes located at the upper end, lower end, and horizontal mid-section side of the pot body. Each main steam injection pipe is connected to several branch steam injection pipes along its length, and each branch steam injection pipe is equipped with multiple steam nozzles. A guide plate for guiding the steam flow is fixedly installed on the inner wall of the pot body near each main steam injection pipe.

[0008] As a further embodiment of this invention, the cross-section of the guide plate is arc-shaped, and the concave surface faces the steam nozzle.

[0009] As a further embodiment of this utility model, all the main steam injection pipes are connected to a main steam ring pipe through their respective independent branch pipes, and each of the steam supply branch pipes is equipped with a regulating valve controlled by a controller.

[0010] As a further improvement of this invention, a temperature sensor electrically connected to the controller is provided inside the pot body to monitor the temperature of different areas and provide feedback to control the regulating valve.

[0011] As a further embodiment of this invention, the distance between adjacent steam injection branch pipes is no greater than one-quarter of the diameter of the pot body.

[0012] As a further embodiment of this invention, the steam nozzles on the steam injection branch pipe are evenly spaced, and the injection direction of all steam nozzles points towards the central axis of the pot body.

[0013] As a further embodiment of this invention, a spiral guide vane coaxial with the pot body is provided in the cooling cavity of the pot body.

[0014] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0015] This invention, by installing main steam injection pipes at the top, bottom, and horizontal mid-section sides of the pot body, allows for multi-directional, surround heating of the soy milk bag inside the pot, solving the problem of lateral "dead zones" caused by the existing technology's top- and bottom-only heating. Connecting steam injection branch pipes with multiple nozzles to the main pipe significantly increases the steam injection point density, enabling steam to effectively penetrate the gaps between stacked materials and improving heating efficiency. Simultaneously, the guide plate directs the straight jet into a rotating, diffused turbulent flow, forcing the steam to circulate and mix thoroughly within the pot, ensuring a uniform temperature field inside.

[0016] Compared with existing technologies, this solution achieves rapid and uniform sterilization, avoids the risk of incomplete sterilization, and shortens sterilization time, thereby improving production efficiency and energy utilization. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.

[0018] Figure 1 This is a perspective view of a high-efficiency steam sterilizer according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 Left view of the high-efficiency steam sterilizer described in the embodiment;

[0020] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0021] Figure 4 This is a perspective view of the high-efficiency steam sterilizer according to another embodiment of the present invention.

[0022] The correspondence between the labels and component names in the attached figures is as follows:

[0023] 1. Pot body; 11. Slide rail; 2. Pot lid; 31. Main steam ring pipe; 311. Regulating valve; 32. Main steam injection pipe; 33. Branch steam injection pipe; 331. Steam nozzle; 4. Guide plate; 5. Cooling cavity; 51. Water inlet; 52. Water outlet; 53. Guide vane; 6. Temperature sensor. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] See Figure 1-3 In one embodiment of the high-efficiency steam sterilizer provided by this utility model, the high-efficiency steam sterilizer includes a pot body 1, a pot lid 2, and steam heating pipes. The pot body 1 adopts a horizontal cylindrical structure and is made of food-grade 304 stainless steel, conforming to pressure vessel design specifications. A pot lid 2 is mounted on one end of the pot body 1 via a hinge and quick-opening locking ring structure. The edge of the pot lid 2 is embedded with a high-temperature resistant silicone sealing ring to ensure airtightness during the sterilization process. Two parallel slide rails 11 are welded to the bottom of the pot body 1 for supporting and guiding the transport vehicle carrying the soy milk bags in and out. The pot body 1 has a double-layer structure, and the resulting jacket space is the cooling cavity 5. A water inlet 51 is provided at the bottom of the pot body 1, and a water outlet 52 is provided at the top, both of which are connected to the cooling cavity 5; the above is a conventional structural design.

[0026] The steam heating pipeline is the key component of this design. A main steam ring pipe 31 is installed outside the boiler body 1, connecting to an external steam source via flanges. The steam is then divided into four independent branch pipes. Each branch pipe is equipped with a pneumatic regulating valve 311 for precise control of the steam flow entering each zone.

[0027] After entering the boiler body 1 through the main steam ring pipe 31, the steam flows into four parallel steam injection main pipes 32: one along the center line of the top of the boiler body 1 (upper steam injection main pipe 32), one along the center line of the bottom of the boiler body 1 (lower steam injection main pipe 32), and the other two along the center lines of the two side walls of the boiler body 1 in the horizontal direction (side steam injection main pipes 32). To enhance the uniformity of steam distribution, several steam injection branch pipes 33 are welded to each of the four steam injection main pipes 32. The axial direction of these steam injection branch pipes 33 is parallel to the axis of the boiler body 1. As a preferred embodiment, the center distance between adjacent steam injection branch pipes 33 is designed to be 1 / 5 to 1 / 4 of the diameter of the boiler body 1. For example, for a boiler body 1 with a diameter of 1.2 meters, the spacing can be 250 mm.

[0028] Each steam injection branch pipe 33 has a row of steam nozzles 331 evenly spaced. The center of all steam nozzles 331 points towards the central axis of the pot body 1, and their diameter is preferably 2-3 mm to ensure that the steam can form a high-speed, fine jet. Through this three-way arrangement of top, bottom, and side, the soy milk bag inside the pot body 1 can be heated in a surrounding manner from multiple directions.

[0029] A guide plate 4 is fixedly installed on the inner wall of the pot body 1 near the main steam injection pipe 32. This guide plate 4 is stamped from corrosion-resistant 316 stainless steel, and its cross-section is an arc shape adapted to the curvature of the pot wall. During installation, the concave surface of the guide plate 4 faces the steam nozzle 331, and its tangential direction is approximately the same as the main direction of the steam jet. When steam is ejected from the steam nozzle 331, it impacts the arc-shaped surface of the guide plate 4, changing the flow direction from a straight jet to a turbulent flow that rotates and diffuses along the inner wall of the pot body 1. This design greatly promotes the circulation and mixing of steam throughout the entire space of the pot body 1, effectively eliminating dead zones in heat distribution.

[0030] Pt100 platinum resistance temperature sensors 6 are installed at the front and rear positions inside the pot body 1. These temperature sensors 6, as well as the pneumatic regulating valves 311 on each branch, are electrically connected to the PLC controller outside the pot body 1 via signal lines. The PLC can intelligently and independently adjust the valve opening of each branch according to the preset sterilization process curve and the real-time feedback from the temperature sensors 6, thereby achieving precise control of the microclimate inside the pot.

[0031] See Figure 4 In another embodiment of this utility model, in order to further improve the cooling efficiency, the water inlet 51 is set at one end of the pot body 1 and the water outlet 52 is set at the other end of the pot body 1. At the same time, a spiral metal guide plate 53 coaxial with the pot body 1 is welded in the cooling cavity 5. The guide plate 53 divides the cooling cavity 5 into a spiral channel connecting the water inlet 51 and the water outlet 52. The spiral channel forces the cooling water to flow along the spiral path, thereby achieving sufficient heat exchange with the pot wall of the pot body 1.

[0032] The workflow of this utility model is as follows:

[0033] The transport vehicle filled with soy milk bags is pushed into the pot body 1 along the slide rail 11, and the pot lid 2 is closed and locked. The sterilization program is started, and the PLC controls the opening of four pneumatic regulating valves 311. Steam is sprayed from the steam nozzles 331 of each steam branch pipe 33 through the upper, lower and side steam injection main pipes 32, which surrounds and heats the soy milk bags in the pot body 1. After the steam is sprayed out, it is forced to change direction, from a straight jet to a turbulent flow that rotates and diffuses along the inner wall of the pot body 1, effectively eliminating dead zones in heat distribution. Through the above multi-directional spraying and uniform distribution, the temperature inside the pot is quickly and evenly raised to the target temperature and kept warm. After sterilization, the system closes the regulating valves 311, starts the water pump, and the cooling water is pumped in from the water inlet 51. Guided by the spiral guide vane 53, the water flows through the entire cooling cavity 5, carries away the heat, and is discharged from the water outlet 52, achieving rapid and uniform cooling of the material.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency steam sterilizer, comprising a pot body (1) and a steam heating pipe installed inside the pot body (1), characterized in that: The steam heating pipeline includes multiple main steam injection pipes (32) located at the upper end, lower end and horizontal mid-section side of the inside of the pot body (1); each main steam injection pipe (32) is connected to several steam injection branch pipes (33) along its length, and the steam injection branch pipes (33) are provided with multiple steam nozzles (331); a guide plate (4) for guiding the steam flow is fixedly installed on the inner wall of the pot body (1) near each main steam injection pipe (32).

2. The high-efficiency steam sterilizer according to claim 1, characterized in that: The cross-section of the guide plate (4) is arc-shaped, and the concave surface faces the steam nozzle (331).

3. The high-efficiency steam sterilizer according to claim 1, characterized in that: All of the steam injection main pipes (32) are connected to a main steam ring pipe (31) through their respective independent branch pipes, and each of the steam supply branch pipes is equipped with a regulating valve (311) controlled by a controller.

4. The high-efficiency steam sterilizer according to claim 3, characterized in that: The pot body (1) is equipped with a temperature sensor (6) that is electrically connected to the controller, which is used to monitor the temperature of different areas and provide feedback to control the regulating valve (311).

5. The high-efficiency steam sterilizer according to claim 1, characterized in that: The distance between adjacent steam injection branch pipes (33) is no greater than one-quarter of the diameter of the pot body (1).

6. The high-efficiency steam sterilizer according to claim 1, characterized in that: The steam nozzles (331) on the steam injection branch pipe (33) are evenly distributed, and the injection direction of all steam nozzles (331) points to the central axis of the pot body (1).

7. The high-efficiency steam sterilizer according to claim 1, characterized in that: The cooling cavity (5) of the pot body (1) is provided with a spiral guide vane (53) coaxial with the pot body (1).

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