Ultraviolet reflection inner cavity structure of seasoning raw material sterilization device

Abstract

The utility model provides a kind of seasoning raw material disinfection and sterilization device's ultraviolet reflection inner cavity structure, belong to seasoning sterilization technical field, the ultraviolet reflection inner cavity structure of this seasoning raw material disinfection and sterilization device, comprising: disinfection inner cavity, disinfection inner cavity is the hollow cylindrical structure of unitary forming, the inner surface of disinfection inner cavity is made of polished aluminium alloy material by ultraviolet light irradiation resistance, and the inner cylindrical surface of disinfection inner cavity is uniformly provided with multiple refracting prisms along the circumferential direction;Ultraviolet light source assembly, ultraviolet light source assembly is the long tubular structure of strip shape, and ultraviolet light source assembly is inserted into the geometric center of disinfection inner cavity and is along the axial extension arrangement of disinfection inner cavity;And inlet and outlet component, inlet and outlet component is set in the opposite ends of disinfection inner cavity, to improve the irradiation uniformity and irradiation intensity of ultraviolet light to seasoning raw material, to realize the effective disinfection and sterilization of seasoning raw material.

Description

Technical Field

[0001] This utility model belongs to the field of seasoning sterilization technology, specifically, it relates to the ultraviolet reflection inner cavity structure of a seasoning raw material sterilization device. Background Technology

[0002] Seasoning ingredients often face the risk of microbial contamination during production and storage. Traditional sterilization methods, such as high-temperature steam sterilization, while effective, may damage the taste, color, and nutritional components of the ingredients, especially for heat-sensitive ingredients. Therefore, ultraviolet (UV) light sterilization technology has been widely used in food processing due to its advantages of no chemical residue, low-temperature processing, and high efficiency. Existing UV sterilization devices typically place a UV light source in a flowing material channel for sterilization, where the material is irradiated as it passes through. However, most existing device designs have significant limitations. Specifically, many sterilization chambers lack effective UV reflection or guiding structures, and the inner walls of the chambers may be made of stainless steel or other materials that absorb and diffuse UV light, resulting in significant UV energy loss. Furthermore, because the cross-section of raw material flow is typically large, and the intensity of ultraviolet light decreases rapidly with distance after being emitted from the light source, raw materials near the center of the light source receive sufficient irradiation dose, while those at the edge of the flow or those obscured by other raw material particles often receive insufficient ultraviolet light dose, forming a so-called "sterilization blind zone." To compensate for this deficiency, existing technologies typically increase the number of ultraviolet light source components or increase the power of the light source. However, this not only increases energy consumption and operating costs but may also cause unnecessary damage to the raw materials due to excessive irradiation. Therefore, there is an urgent need in existing technologies for a sterilization chamber internal structure that is simple in structure, can significantly improve ultraviolet light utilization efficiency, and enhance irradiation uniformity and intensity, to ensure that seasoning raw materials receive a uniform and sufficient ultraviolet light dose, achieving a thorough sterilization effect. Utility Model Content

[0003] In view of this, the existing ultraviolet disinfection and sterilization devices provided by this utility model lack effective ultraviolet light guiding and multiple reflection structures, resulting in insufficient irradiation intensity and uniformity of ultraviolet light in the disinfection chamber. This causes the condiment raw materials flowing through the chamber, especially those located at the edge of the disinfection chamber, to receive insufficient ultraviolet light dose, thus leading to incomplete disinfection and sterilization and posing a safety hazard.

[0004] This utility model is implemented as follows:

[0005] This utility model provides an ultraviolet reflective inner cavity structure for a condiment raw material disinfection and sterilization device, used for ultraviolet light disinfection and sterilization of condiment raw materials. It includes: a disinfection inner cavity, which is a one-piece molded hollow cylindrical structure. The inner surface of the disinfection inner cavity is made of polished aluminum alloy material resistant to ultraviolet light irradiation. Multiple refractive prisms are evenly arranged along the circumference of the inner cylindrical surface of the disinfection inner cavity; and an ultraviolet light source assembly, which is a strip-shaped long tubular structure that penetrates the geometry of the disinfection inner cavity. The ultraviolet light source assembly is arranged extending axially along the disinfection cavity to emit ultraviolet light; and the inlet and outlet assembly is arranged at opposite ends of the disinfection cavity to guide the seasoning raw materials into and out of the disinfection cavity. The refractive prism is used to guide the ultraviolet light emitted by the ultraviolet light source assembly to undergo multiple reflections on the inner surface of the disinfection cavity, thereby improving the uniformity and intensity of ultraviolet light irradiation on the seasoning raw materials, so as to achieve effective disinfection and sterilization of the seasoning raw materials.

[0006] The technical advantages of the ultraviolet reflective inner cavity structure of the condiment raw material disinfection and sterilization device provided by this utility model are as follows: The disinfection inner cavity is a one-piece molded hollow cylindrical structure, and its inner surface is made of polished aluminum alloy material resistant to ultraviolet light irradiation, ensuring efficient reflection of ultraviolet light and reducing the loss of ultraviolet light energy; multiple refractive prisms evenly arranged along the circumference can effectively receive the ultraviolet light emitted by the ultraviolet light source component and guide it to produce multiple reflections on the inner wall of the disinfection inner cavity, significantly improving the uniformity of ultraviolet light distribution inside the disinfection inner cavity; the ultraviolet light source component is centrally located along the axial direction of the disinfection inner cavity, ensuring that the ultraviolet light irradiates the condiment raw materials flowing through the disinfection inner cavity comprehensively and evenly, avoiding the occurrence of disinfection blind spots; the design of the feeding and discharging components ensures the continuous and smooth entry and exit of condiment raw materials; this structure enhances the irradiation intensity and uniformity of ultraviolet light through multiple reflections by the refractive prisms, greatly improving the disinfection and sterilization efficiency, and ultimately achieving effective and thorough disinfection and sterilization of condiment raw materials.

[0007] Based on the above technical solution, the ultraviolet reflection inner cavity structure of the condiment raw material disinfection and sterilization device of this utility model can be further improved as follows:

[0008] The refracting prism has an obtuse triangle cross-section, with the right-angled side of the obtuse triangle perpendicular to the inner surface of the disinfection cavity. The hypotenuse of the obtuse triangle is used to reflect the received ultraviolet light to the central region of the disinfection cavity.

[0009] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the cross-sectional shape of the refractive prism is an obtuse triangle. This specific geometric shape helps to optimize the reflection path of ultraviolet light, so that when the right-angled side is set perpendicular to the inner surface, the light from the ultraviolet light source component can be received and fixed to the maximum extent. The design of the inclined side is used to accurately reflect the received ultraviolet light to the central area of ​​the sterilization cavity. This means that the ultraviolet light that might have been lost or ineffectively reflected is effectively redirected to the core area of ​​the raw material flow, further improving the ultraviolet irradiation intensity and uniformity of the seasoning raw materials, and ensuring a more thorough sterilization effect.

[0010] Furthermore, the length of the refracting prism along the axial direction of the disinfection cavity is equal to the length of the disinfection cavity along the axial direction of the disinfection cavity, and the apex of the refracting prism is set facing the central axis of the disinfection cavity.

[0011] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the length of the refractive prism along the axial direction of the disinfection cavity is equal to the length of the disinfection cavity along the axial direction, ensuring that the reflection and enhancement of ultraviolet light are uniform and continuous along the entire working length of the disinfection cavity, avoiding the area of ​​reduced irradiance caused by the lack of reflective structure at both ends of the axial direction; the apex of the refractive prism is set facing the central axis of the disinfection cavity, which further optimizes the reflection angle and ensures that the reflected light can more effectively cover the central area of ​​the disinfection cavity, which is the area where the flow of seasoning raw materials is most concentrated, thereby improving the overall disinfection efficiency.

[0012] Furthermore, the angle between the hypotenuse of the refractive prism and the inner cylindrical surface of the disinfection cavity is 45°, and the number of refractive prisms is 6.

[0013] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the angle formed between the hypotenuse of the refracting prism and the inner cylindrical surface of the disinfection cavity is 45°. This precise angle design is the key to achieving ideal multiple reflections. The 45° tilt angle allows the incident ultraviolet light to be reflected almost perpendicularly to its direction on the hypotenuse, efficiently guiding the light to the center of the disinfection cavity and facilitating the formation of an effective cyclic reflection path. The number of refracting prisms is 6. This number is chosen to achieve a balance between ensuring reflection uniformity and structural complexity. The 6 evenly distributed prisms ensure the uniformity of ultraviolet light distribution along the circumference, so that all flowing seasoning raw materials can receive approximately the same irradiation dose.

[0014] Furthermore, the inner surface material of the disinfection cavity is an anodized mirror aluminum plate, and the surface of the ultraviolet light source component is made of quartz glass.

[0015] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the inner surface material of the disinfection cavity is made of anodized mirror aluminum plate, which has extremely high ultraviolet light reflectivity and excellent corrosion resistance. In particular, after mirror treatment, it can minimize the absorption and scattering loss of ultraviolet light, ensuring the utilization efficiency of ultraviolet light; the surface of the ultraviolet light source component is made of quartz glass, which has extremely high transmittance of ultraviolet light, ensuring that the ultraviolet light emitted by the ultraviolet light source component is emitted with maximum intensity, effectively improving the irradiation intensity on the seasoning raw materials, thereby enhancing the disinfection and sterilization effect.

[0016] Furthermore, the width of the refractive prism along the circumference of the disinfection cavity is 1 / 10 of the inner diameter of the disinfection cavity, and the spacing of the refractive prisms along the circumference of the disinfection cavity is equal to the width of the refractive prisms along the circumference of the disinfection cavity.

[0017] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the width of the refractive prism along the circumference of the disinfection cavity is precisely controlled to be 1 / 10 of the inner diameter of the disinfection cavity. This relative size design allows the prism to provide sufficient reflective surface without significantly reducing the flow space of the seasoning raw materials, thus ensuring the efficiency of multiple reflections. The spacing of the refractive prism along the circumference is equal to the width of the refractive prism along the circumference. This uniform arrangement with equal width and spacing ensures the uniform distribution of ultraviolet light in the circumference of the cavity, avoiding local irradiation unevenness caused by excessive concentration or sparseness of the reflective structure, and ensuring that the seasoning raw materials can obtain an approximate ultraviolet light dose when flowing through any circumferential position.

[0018] Furthermore, the distance between the obtuse vertex of the refracting prism and the central axis of the disinfection cavity is greater than the distance between the right vertex of the refracting prism and the central axis of the disinfection cavity.

[0019] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the distance between the obtuse vertex of the refractive prism and the central axis of the disinfection cavity is greater than the distance between the right vertex and the central axis. This geometric relationship precisely defines the installation position and angle of the prism, ensuring that the right-angled side of the obtuse triangular prism can be closely attached to or close to the inner surface of the disinfection cavity, so that the hypotenuse faces the central axis at the expected angle. This provides a structural basis for achieving precise 45° angle reflection, ensuring that ultraviolet light can be efficiently reflected to the central area along the predetermined path, thereby improving the utilization rate and irradiation uniformity of ultraviolet light.

[0020] Furthermore, the feeding and discharging assembly includes a first conical funnel structure and a second conical funnel structure, wherein the first conical funnel structure is disposed at one end of the sterilization inner cavity, and the second conical funnel structure is disposed at the other end of the sterilization inner cavity.

[0021] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The feeding and discharging components include a first conical funnel structure and a second conical funnel structure. The design of the conical funnel structure allows the seasoning raw materials to be smoothly introduced into the sterilization cavity from the pipeline or other equipment and smoothly discharged, avoiding the accumulation of raw materials, flow obstruction or turbulence at the feeding and discharging ports; the tapered gradual structure helps to smoothly transition the flow rate of the raw materials, ensuring that the raw materials form a relatively uniform flow layer in the sterilization cavity, thereby ensuring that the residence time of each raw material particle in the ultraviolet irradiation area tends to be consistent, improving the consistency and reliability of sterilization.

[0022] Furthermore, the first conical funnel structure and the second conical funnel structure are connected to the disinfection cavity via threaded connections.

[0023] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the first conical funnel structure and the second conical funnel structure are connected to the disinfection inner cavity through threaded connection. Threaded connection is a reliable and easy-to-disassemble connection method, which ensures the sealing between the feeding and discharging components and the disinfection inner cavity, and avoids leakage of seasoning raw materials or entry of external contaminants. At the same time, threaded connection makes the maintenance, cleaning or replacement of the ultraviolet light source components of the entire device simple and quick, improves the practicality and maintainability of the device, and extends the service life of the device.

[0024] Furthermore, the inner diameter of the disinfection cavity is 200-300 mm, and the diameter of the ultraviolet light source assembly is 20-30 mm.

[0025] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the inner diameter of the disinfection cavity is designed within the range of 200-300mm. This size range ensures that the seasoning raw materials have sufficient flow space, avoiding insufficient irradiation due to excessively fast raw material flow rate, while also ensuring that the inner cavity diameter is not too large, which would increase the ultraviolet light penetration distance too much and cause a decrease in irradiation intensity, thereby maintaining a reasonable disinfection efficiency; the diameter of the ultraviolet light source component is controlled within the range of 20-30mm. This size allows it to provide sufficient ultraviolet light energy without occupying too much inner cavity volume, affecting the normal flow of raw materials, and ensuring the optimal working state of ultraviolet light disinfection and sterilization.

[0026] Compared with existing technologies, the beneficial effects of the ultraviolet reflective inner cavity structure of the condiment raw material disinfection and sterilization device provided by this utility model are as follows: The ultraviolet reflective inner cavity structure of this utility model effectively solves the problems of insufficient ultraviolet irradiation intensity and uniformity in existing technologies through the synergistic effect of an integrally formed disinfection inner cavity, an axially centered ultraviolet light source component, and uniformly distributed refractive prisms on the inner surface. Specifically, the disinfection inner cavity is made of polished aluminum alloy material with high reflectivity, minimizing the absorption loss of ultraviolet light. The key innovation lies in the design of the refractive prisms, whose obtuse triangular cross-section and 45° hypotenuse can accurately reflect most of the ultraviolet light emitted by the ultraviolet light source component and redirect it to the central area of ​​the disinfection inner cavity, resulting in multiple and effective reflections of ultraviolet light on the inner wall of the cavity. This multiple reflection mechanism greatly improves the ultraviolet irradiation intensity inside the disinfection inner cavity and eliminates irradiation dead zones, ensuring that condiment raw materials flowing through the inner cavity receive a sufficient and uniform ultraviolet light dose regardless of their location. Through this structural optimization, this invention significantly improves the efficiency and thoroughness of disinfection and sterilization without increasing the power of the ultraviolet light source component, ensuring the hygiene and safety of seasoning raw materials. The conical structure of the inlet and outlet components further ensures the smooth flow of raw materials, maintaining the stability and consistency of the irradiation process. Compared with existing devices that rely solely on direct light or simple diffuse reflection, this invention achieves precise control and efficient utilization of ultraviolet light through geometric optics principles. Its simple structure and few components (only four main parts: the disinfection chamber, the ultraviolet light source component, the first conical funnel structure, and the second conical funnel structure) make it easy to manufacture and maintain, providing a highly efficient and reliable ultraviolet disinfection and sterilization solution for seasoning raw materials. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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.

[0028] Figure 1 A schematic diagram of the ultraviolet reflective inner cavity structure of a sterilization and disinfection device for condiment raw materials;

[0029] Figure 2 A cross-sectional view of the ultraviolet reflective inner cavity structure of a sterilization and disinfection device for condiment raw materials;

[0030] Figure 3 A front view of the ultraviolet reflective inner cavity structure of a sterilization and disinfection device for condiment raw materials;

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Disinfecting inner cavity; 11. Refractive prism; 2. Ultraviolet light source assembly; 3. Feeding and discharging assembly. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0034] like Figures 1-3 The image shown is a first embodiment of the ultraviolet reflective inner cavity structure of a seasoning raw material disinfection and sterilization device provided by this utility model. In this embodiment, it is used for ultraviolet light disinfection and sterilization of seasoning raw materials. It includes: a disinfection inner cavity 1, which is an integrally formed hollow cylindrical structure. The inner surface of the disinfection inner cavity is made of polished aluminum alloy material resistant to ultraviolet light irradiation. Multiple refractive prisms 11 are uniformly arranged along the circumference of the inner cylindrical surface of the disinfection inner cavity; and an ultraviolet light source assembly 2, which is a strip-shaped long tubular structure. The light source assembly is inserted into the geometric center of the disinfection cavity and extends along the axial direction of the disinfection cavity. The ultraviolet light source assembly is used to emit ultraviolet light. There is also a feeding and discharging assembly 3, which is set at opposite ends of the disinfection cavity. The feeding and discharging assembly is used to guide the seasoning raw materials into and out of the disinfection cavity. The refractive prism is used to guide the ultraviolet light emitted by the ultraviolet light source assembly to undergo multiple reflections on the inner surface of the disinfection cavity, thereby improving the uniformity and intensity of ultraviolet light irradiation on the seasoning raw materials, so as to achieve effective disinfection and sterilization of the seasoning raw materials.

[0035] In the above technical solution, the cross-sectional shape of the refracting prism is an obtuse triangle, the right-angled side of the obtuse triangle is set perpendicular to the inner surface of the disinfection cavity, and the hypotenuse of the obtuse triangle is used to reflect the received ultraviolet light to the central area of ​​the disinfection cavity.

[0036] Furthermore, in the above technical solution, the length of the refracting prism along the axial direction of the disinfection cavity is equal to the length of the disinfection cavity along the axial direction of the disinfection cavity, and the apex of the refracting prism is set facing the central axis of the disinfection cavity.

[0037] Furthermore, in the above technical solution, the angle formed by the hypotenuse of the refractive prism and the inner cylindrical surface of the disinfection cavity is 45°, and the number of refractive prisms is 6.

[0038] Furthermore, in the above technical solution, the inner surface material of the disinfection cavity is an anodized mirror aluminum plate, and the surface of the ultraviolet light source component is made of quartz glass.

[0039] Furthermore, in the above technical solution, the width of the refracting prism along the circumference of the disinfection cavity is 1 / 10 of the inner diameter of the disinfection cavity, and the spacing of the refracting prisms along the circumference of the disinfection cavity is equal to the width of the refracting prisms along the circumference of the disinfection cavity.

[0040] Furthermore, in the above technical solution, the distance between the obtuse vertex of the refracting prism and the central axis of the disinfection cavity is greater than the distance between the right vertex of the refracting prism and the central axis of the disinfection cavity.

[0041] Furthermore, in the above technical solution, the feeding and discharging assembly includes a first conical funnel structure and a second conical funnel structure. The first conical funnel structure is disposed at one end of the sterilization inner cavity, and the second conical funnel structure is disposed at the other end of the sterilization inner cavity.

[0042] Furthermore, in the above technical solution, the first conical funnel structure and the second conical funnel structure are connected to the disinfection cavity via threaded connection.

[0043] Furthermore, in the above technical solution, the inner diameter of the disinfection cavity is 200-300 mm, and the diameter of the ultraviolet light source component is 20-30 mm.

[0044] The following is a specific embodiment 1 of this utility model: Embodiment 1 is an ultraviolet reflective inner cavity structure for sterilizing dried spice powder. The sterilization inner cavity is a one-piece molded hollow cylindrical structure with an inner diameter of 250mm and a length of 1500mm. The material is pure aluminum plate that has undergone anodizing and mirror polishing to obtain an ultraviolet light reflectivity of more than 90%. Six obtuse-angled triangular refractive prisms are evenly arranged along the circumference of the inner surface of the sterilization inner cavity. The axial length of the prism is 1500mm, and the angle formed by its hypotenuse and the surface of the inner cylinder is precisely controlled at 45°. The circumferential width of the prisms and the spacing between the prisms are both 25mm. The ultraviolet light source assembly is a low-pressure mercury lamp with a diameter of 25mm, a power of 55W, and an effective luminous length of 1400mm. Its surface is made of quartz glass and it is fixed on the central axis of the sterilization inner cavity. The feeding and discharging assembly comprises two conical funnel structures made of food-grade 304 stainless steel, threadedly connected at both ends of the sterilization chamber for connection to the raw material conveying pipeline. During operation, pre-treated spice powder (such as ginger powder or garlic powder) is continuously fed into the sterilization chamber through the first conical funnel structure at a flow rate of 500 kg / h. Based on the chamber dimensions and flow rate, the residence time of the spice powder in the irradiation zone is approximately 15 seconds. During this residence time, the spice powder is exposed to a strong ultraviolet light field formed by direct light from the ultraviolet light source assembly and multiple precise reflections from the refracting prism. The 45° refracting prism ensures that light rays originally directed towards the edges are reflected back to the center, greatly improving irradiation uniformity and intensity. This device ensures that microorganisms in the spice powder, especially mold spores and E. coli, receive a bactericidal dose exceeding 50 mJ / cm². After sterilization, the spice powder is discharged through the second conical funnel structure. This embodiment achieves efficient and uniform ultraviolet sterilization of spice powder without affecting its flavor and color.

[0045] The following is another specific embodiment 2 of this utility model: This embodiment 2 is based on embodiment 1, and the arrangement of the refractive prisms and ultraviolet light source components has been upgraded and improved. Specifically, the number of refractive prisms is increased from 6 to 8 to further improve the uniformity of circumferential irradiation. To accommodate the increase in the number of prisms, the circumferential width and spacing of the refractive prisms are adjusted accordingly to approximately 1 / 12 of the inner diameter, i.e., approximately 20 mm, to maintain effective flow space for the raw materials. At the same time, the ultraviolet light source component is replaced by three short tubular ultraviolet light sources arranged side by side. The total effective luminous length of the three short tubular ultraviolet light source components remains 1400 mm, but their arrangement is uniformly spaced along the axial direction. The length of each short tubular ultraviolet light source component is approximately 450 mm, the interval between adjacent light sources is approximately 25 mm, and all three short tubular ultraviolet light source components are located on the central axis of the disinfection cavity. This arrangement, while maintaining a constant total power, allows the raw materials to be slightly disturbed and tumbled as they flow through the gaps between the light sources, thus exposing new surfaces to receive ultraviolet light irradiation and further improving the thoroughness of sterilization of granular seasoning raw materials.

[0046] The following is another specific embodiment 3 of this utility model: Embodiment 3 is based on Embodiment 1, but upgrades the inner surface material of the sterilization cavity. Specifically, the inner surface material of the sterilization cavity is upgraded to a PTFE (polytetrafluoroethylene) reflective film composite layer with ultra-high ultraviolet light reflectivity. This reflective film covers the inner surface of the mirrored aluminum plate. The reflectivity of this composite layer at a wavelength of 254nm can reach over 98%, greatly improving the utilization efficiency of ultraviolet light. Simultaneously, to meet the sterilization requirements of some temperature-sensitive liquid seasoning raw materials, the power of the ultraviolet light source component is reduced to 40W to reduce the impact of heat generated during operation on the raw materials. Although the light source power is reduced, due to the significant increase in the reflectivity of the inner surface, the actual ultraviolet irradiation intensity and uniformity inside the sterilization cavity can still maintain or even exceed the level of Embodiment 1, achieving a gentler, lower-heat sterilization process while ensuring sterilization effectiveness.

[0047] The following is another specific application scenario of this utility model, embodiment 4. This embodiment is applied to the continuous sterilization of liquid condiment raw materials (such as soy sauce, vinegar, and other clarified liquids), including a sterilization inner cavity, an ultraviolet light source assembly, a first conical funnel structure, and a second conical funnel structure, described in detail below: The inner diameter of the sterilization inner cavity is 200mm, and the length is 1000mm, using an anodized mirror aluminum plate inner surface. Six 45° inclined refractive prisms are evenly arranged along the inner circumference, with an axial length of 1000mm for each prism. The ultraviolet light source assembly uses a 20mm diameter, 30W low-pressure mercury lamp with a quartz glass surface, centrally located along the axial direction. Both the first and second conical funnel structures are made of acid and alkali resistant 316L food-grade stainless steel and are connected to the sterilization inner cavity via threaded connections. During operation, clarified liquid seasoning raw materials are pumped into the first conical funnel structure at a flow rate of 2000 L / h via a high-precision metering pump, flowing continuously and stably through the sterilization inner cavity under pressure. Because it is a clarified liquid, the flow layer of the raw material is more uniform and stable, resulting in better penetration of ultraviolet light. The ultraviolet light emitted from the central light source penetrates the liquid raw material, while the light rays hitting the inner cavity wall are precisely reflected back to the fluid core area by prisms. This precise directional reflection mechanism ensures that even when the liquid raw material is at the edge of the inner cavity, it can receive high-intensity reflected light. In this embodiment, the residence time of the liquid raw material in the irradiation area is approximately 2 seconds through flow rate control. This short-duration, high-intensity irradiation can achieve rapid and efficient killing of microorganisms in the liquid seasoning, especially bacteria, yeast, and mold. The second conical funnel structure guides the sterilized liquid raw material into the downstream aseptic filling system. The ultraviolet reflective inner cavity structure of this embodiment effectively avoids the negative impact of traditional heat treatment on the flavor and color of liquid seasonings, achieving highly efficient low-temperature sterilization.

[0048] Specifically, the principle of this invention is as follows: The ultraviolet reflective cavity structure of this invention effectively solves the technical problems of uneven ultraviolet irradiation and insufficient intensity. Its core principle is based on precise reflection and effective convergence and multiple utilization of light energy through geometric optics. First, the sterilization cavity is made of anodized mirror aluminum plate, a material with extremely high ultraviolet reflectivity (typically above 90% in the ultraviolet C band), ensuring minimal loss of ultraviolet light energy. Second, the one-piece molded sterilization cavity is a hollow cylindrical structure, ensuring the continuity and uniformity of raw material flow. The key lies in the multiple obtuse-angled triangular refractive prisms evenly arranged along the circumference. When the ultraviolet light source component along the central axis emits ultraviolet light, the light rays strike the cavity wall at different angles. The smooth parts without prisms mainly perform specular reflection, while the prisms play a role in directional reflection. Specifically, the 45° beveled edge design of the prism, according to the law of reflection, reflects incident ultraviolet light in a direction nearly perpendicular to the radius of the inner cavity. This precisely redirects light that would otherwise be directed towards the inner cavity wall and potentially attenuated or lost in subsequent reflections, back to the vicinity of the central axis of the sterilization cavity. Since the central region is the core area for raw material flow, this design significantly increases the ultraviolet flux and irradiance in this area. Simultaneously, this multi-directional reflection mechanism creates a circulating, intersecting irradiance field within the sterilization cavity, effectively improving the irradiance uniformity at various points on the inner wall and along the flow of raw materials. This is equivalent to achieving multiple effective uses and energy convergence of ultraviolet light without increasing the power of the light source, ensuring that all seasoning raw material particles receive the required minimum sterilization dose. The quartz glass surface of the ultraviolet light source component ensures that ultraviolet light enters the sterilization cavity with maximum intensity.

[0049] The specific embodiment of this utility model is as follows: This utility model discloses an ultraviolet reflective inner cavity structure for a seasoning raw material disinfection and sterilization device, mainly comprising three core functional components: a disinfection inner cavity, an ultraviolet light source assembly, and an infeed / outfeed assembly. The infeed / outfeed assembly further includes a first conical funnel structure and a second conical funnel structure, totaling four components. The disinfection inner cavity is an integrally formed hollow cylindrical structure, and its inner surface is a key technical feature of this utility model. The inner surface is preferably made of anodized mirror-finished aluminum plate material, which has extremely high reflectivity for ultraviolet light, especially ultraviolet C light in the sterilization band, reaching over 90%, ensuring maximum utilization efficiency of ultraviolet light energy. The inner diameter of the disinfection inner cavity is preferably controlled within the range of 200mm to 300mm, for example, 250mm. An inner diameter that is too small may obstruct the flow of raw materials, while an inner diameter that is too large will result in an excessively long ultraviolet light penetration distance and rapid intensity attenuation. Six refractive prisms are evenly arranged circumferentially along the inner cylindrical surface of the disinfection cavity. These prisms are preferably integrally formed with the disinfection cavity, and their cross-sectional shape is an obtuse triangle, with the right-angled side perpendicular to the inner surface of the disinfection cavity. The angle between the hypotenuse of the refractive prism and the inner cylindrical surface of the disinfection cavity is 45°, which is the optimal angle design for achieving efficient directional reflection. The length of the refractive prism along the axial direction of the disinfection cavity is equal to the axial length of the disinfection cavity to ensure uniform reflection throughout the disinfection area. The circumferential width of the refractive prism is preferably 1 / 10 of the inner diameter of the disinfection cavity, i.e., 25 mm, and the spacing between the prisms is also 25 mm. This size ratio ensures sufficient reflective area and uniform irradiation. The ultraviolet light source assembly is a strip-shaped long tubular structure, preferably using a low-pressure mercury lamp or an LED ultraviolet light source, with a preferred operating wavelength of 254 nm. The surface of the ultraviolet light source assembly is made of highly transparent quartz glass, and its diameter is preferably 20 mm to 30 mm, for example, 25 mm. The ultraviolet light source assembly is inserted into and fixed to the geometric center of the sterilization cavity through a bracket (preferably made of UV-resistant materials such as polytetrafluoroethylene) and extends along its axial direction, ensuring uniform irradiation of the flowing raw materials. The feeding and discharging assembly includes a first conical funnel structure and a second conical funnel structure, both made of food-grade stainless steel to ensure hygiene, safety, and corrosion resistance. The first and second conical funnel structures are connected to opposite ends of the sterilization cavity via threaded connections. This connection method ensures a strong and airtight connection while facilitating disassembly, cleaning, and maintenance of the device. The first conical funnel structure smoothly introduces the seasoning raw materials into the sterilization cavity, while the second conical funnel structure discharges the raw materials.Under the influence of gravity or pumping, the seasoning ingredients enter the sterilization cavity from the first conical funnel structure, flow through the strong irradiation area formed by the ultraviolet light source component and the reflective prism, and after receiving ultraviolet light irradiation, flow out from the second conical funnel structure, completing the sterilization process.

[0050] The specific operation or use method of this utility model is as follows: When using the ultraviolet reflective inner cavity structure of this utility model for disinfection and sterilization of seasoning raw materials, the device needs to be prepared and connected first. The operator must ensure that the disinfection inner cavity, ultraviolet light source assembly, and inlet / outlet assembly (first conical funnel structure and second conical funnel structure) are correctly assembled according to the requirements described in the embodiment, especially checking the sealing of the threaded connections to prevent raw material leakage or external contamination. The six refractive prisms inside the disinfection inner cavity should be clean to ensure their reflection efficiency. The quartz glass surface of the ultraviolet light source assembly should also be kept clean to ensure sufficient transmission of ultraviolet light. Before use, the ultraviolet light source assembly can be preheated to achieve a stable ultraviolet light output intensity. Seasoning raw materials, such as various powdered or granular seasonings, spices, or their premixes, are conveyed to the inlet of the first conical funnel structure via upstream conveying equipment (such as a screw conveyor, pneumatic conveying pipeline, or metering pump). Operators need to accurately calculate and set the flow rate of the raw materials as they pass through the sterilization chamber, based on the type, particle size, and required sterilization dose. Setting the flow rate is crucial, as it directly determines the residence time of the raw materials within the strong ultraviolet irradiation area, i.e., the ultraviolet dose. Generally, the slower the flow rate, the longer the residence time, the greater the ultraviolet dose, and the more thorough the sterilization effect. After setting the flow rate, the operator starts the conveying equipment, and the seasoning raw materials flow smoothly and evenly from the first conical funnel structure into the hollow cylindrical space of the sterilization chamber. During the flow, the raw materials flow evenly around the axially positioned ultraviolet light source assembly. The ultraviolet light source assembly emits high-intensity ultraviolet-C light, which directly irradiates the flowing raw materials for initial sterilization. Simultaneously, a large amount of ultraviolet light strikes the inner wall of the sterilization chamber. Some of this light is reflected by the high-reflectivity mirrored aluminum plate of the chamber, while the remaining light is precisely captured and directionally reflected to the central area of ​​the chamber by a 45° beveled refractive prism. This combination of directional and multiple reflections significantly enhances the ultraviolet irradiation intensity inside the inner cavity, ensuring that raw materials near the inner cavity edge also receive sufficient irradiation dose, effectively eliminating sterilization blind spots. The raw materials continuously receive multi-angle, high-intensity ultraviolet irradiation during continuous flow, damaging the DNA and RNA of microorganisms, thus achieving thorough sterilization. After a predetermined residence time, the sterilized seasoning raw materials are smoothly collected through the second conical funnel structure and transported to downstream packaging or storage stages. Operators need to perform regular maintenance on the device, especially disassembling the inlet / outlet components and cleaning the inner cavity and prism surfaces to remove any adhering raw material residue and maintain the high reflectivity of the inner wall and the precise reflective effect of the prisms.

Claims

1. A UV-reflective inner cavity structure for a condiment raw material disinfection and sterilization device, used for UV-based disinfection and sterilization of condiment raw materials, characterized in that, include: The system includes a sterilization cavity, which is a one-piece hollow cylindrical structure. The inner surface of the sterilization cavity is made of polished aluminum alloy material resistant to ultraviolet light. Multiple refractive prisms are evenly arranged along the circumference of the inner cylindrical surface of the sterilization cavity. An ultraviolet light source assembly is a strip-shaped long tubular structure that penetrates the geometric center of the sterilization cavity and extends along its axial direction. The ultraviolet light source assembly is used to emit ultraviolet light. An inlet / outlet assembly is located at opposite ends of the sterilization cavity. The inlet / outlet assembly guides the seasoning raw materials into and out of the sterilization cavity. The refractive prisms guide the ultraviolet light emitted by the ultraviolet light source assembly to undergo multiple reflections on the inner surface of the sterilization cavity, thereby improving the uniformity and intensity of ultraviolet light irradiation on the seasoning raw materials, and achieving effective sterilization of the seasoning raw materials.

2. The ultraviolet reflective inner cavity structure of the seasoning raw material disinfection and sterilization device according to claim 1, characterized in that, The cross-sectional shape of the refracting prism is an obtuse triangle, with the right-angled side of the obtuse triangle perpendicular to the inner surface of the disinfection cavity. The hypotenuse of the obtuse triangle is used to reflect the received ultraviolet light to the central area of ​​the disinfection cavity.

3. The ultraviolet reflective inner cavity structure of the seasoning raw material disinfection and sterilization device according to claim 2, characterized in that, The length of the refracting prism along the axial direction of the disinfection cavity is equal to the length of the disinfection cavity along the axial direction of the disinfection cavity, and the apex of the refracting prism is set facing the central axis of the disinfection cavity.

4. The ultraviolet reflective inner cavity structure of the seasoning raw material disinfection and sterilization device according to claim 3, characterized in that, The angle between the hypotenuse of the refractive prism and the inner cylindrical surface of the disinfection cavity is 45°, and there are 6 refractive prisms.

5. The ultraviolet reflective inner cavity structure of the seasoning raw material disinfection and sterilization device according to claim 4, characterized in that, The inner surface material of the disinfection cavity is an anodized mirror aluminum plate, and the surface of the ultraviolet light source component is made of quartz glass.

6. The ultraviolet reflective inner cavity structure of the seasoning raw material disinfection and sterilization device according to claim 5, characterized in that, The width of the refractive prism along the circumference of the disinfection cavity is 1 / 10 of the inner diameter of the disinfection cavity, and the spacing of the refractive prisms along the circumference of the disinfection cavity is equal to the width of the refractive prisms along the circumference of the disinfection cavity.

7. The ultraviolet reflective inner cavity structure of the seasoning raw material disinfection and sterilization device according to claim 6, characterized in that, The distance between the obtuse vertex of the refracting prism and the central axis of the disinfection cavity is greater than the distance between the right vertex of the refracting prism and the central axis of the disinfection cavity.

8. The ultraviolet reflective inner cavity structure of the seasoning raw material disinfection and sterilization device according to claim 7, characterized in that, The feeding and discharging assembly includes a first conical funnel structure and a second conical funnel structure. The first conical funnel structure is disposed at one end of the sterilization inner cavity, and the second conical funnel structure is disposed at the other end of the sterilization inner cavity.

9. The ultraviolet reflective inner cavity structure of the seasoning raw material disinfection and sterilization device according to claim 8, characterized in that, The first conical funnel structure and the second conical funnel structure are connected to the disinfection cavity via threaded connections.

10. The ultraviolet reflective inner cavity structure of the seasoning raw material disinfection and sterilization device according to claim 9, characterized in that, The inner diameter of the disinfection cavity is 200-300 mm, and the diameter of the ultraviolet light source assembly is 20-30 mm.

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