A food additive quantitative detection device

Abstract

The application provides a food additive quantitative detection device, and relates to the field of food additive detection. The food additive quantitative detection device comprises a top shell and a bottom shell, a flow guide plate is fixedly connected between the top shell and the bottom shell, the flow guide plate is in a spiral structure, the plate body of the flow guide plate extends in a continuous spiral shape, a fluid channel is formed in the flow guide plate along a spiral track, one end of the flow guide plate is provided with a feeding port in communication with the bottom end of the top shell, and the other end is provided with a discharging port in communication with the bottom shell. The food additive quantitative detection device realizes automatic mixing of the sample and the detection reagent without power through the spiral flow guide plate, manual oscillation is omitted, the problems of uneven mixing and low efficiency are avoided, the meshing teeth are used to drive synchronous discharging of the double rotary bins, the lever piston pump suction structure is matched with the adjustable fulcrum, the sample and the reagent ratio can be accurately controlled and flexibly adjusted, and the manual matching error is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of food additive detection, specifically to a quantitative detection device for food additives. Background Technology

[0002] Food additives are essential ingredients widely used in the modern food industry. These include preservatives, sweeteners, colorants, antioxidants, thickeners, and acidity regulators, which improve the flavor, color, and texture of food and extend its shelf life. With the rapid development of the food industry, the standardized use of additives has become a key aspect of food safety management. The corresponding food additive testing technology has gradually formed a specialized field, mainly covering sample pretreatment, quantitative analysis, rapid screening, and result determination. It involves multiple branches such as chemical analysis, instrumental analysis, and on-site rapid testing, and is an important component of the food safety testing field. Currently, food additive testing focuses on quantitative detection, which not only needs to determine the presence of additives but also accurately measure their actual content in food to ensure compliance with national food safety standards. Ensuring food safety: legal additives are safe and reliable when used within prescribed limits. Excessive intake may cause potential harm to the liver, kidneys, and nervous system, and may even lead to acute poisoning or long-term health risks.

[0003] In the existing food additive testing process, the sample and test reagents are mostly mixed manually by proportion and shaking. This not only makes it easy for the ratio of sample to reagent to be inaccurate due to operational errors, resulting in incomplete reaction and insufficient quantitative accuracy, but also takes a long time to mix by manually inverting and shaking, which increases the labor intensity of the testing personnel. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a quantitative detection device for food additives, which solves the problems of relying on manual proportioning and manual shaking and mixing, inaccurate quantification, and low efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a food additive quantitative detection device, comprising a top shell and a bottom shell, wherein a guide plate is fixedly connected between the top shell and the bottom shell, the guide plate has a spiral structure, the plate body of the guide plate extends in a continuous spiral shape, a fluid channel is formed inside the guide plate along the spiral trajectory, one end of the guide plate is provided with an inlet communicating with the bottom end of the top shell, and the other end is provided with an outlet communicating with the bottom shell; The top shell has two storage compartments inside, which are used to hold liquid samples and test reagents respectively. When the discharge ends of the two storage compartments rotate, they are used to discharge the liquid samples and test reagents to the bottom of the top shell.

[0006] Preferably, the bottom end of the top shell is conical, and a discharge port A is provided at the bottom end.

[0007] Preferably, the bottom shell has symmetrical conical shapes at both ends, and the bottom end of the bottom shell is also provided with a discharge port B.

[0008] Preferably, the storage compartment includes a fixed compartment with a cross-section in the shape of a "6" and a rotating compartment. The rotating compartment rotates relative to the fixed compartment. A fixed column is fixedly connected between one side of the fixed compartment and the inner wall of the top shell. A rotating rod is fixedly connected to one side of the rotating compartment. The rotating rod passes through the top shell and is rotatably connected to the top shell.

[0009] Preferably, a number of teeth are fixedly connected to the outer sides of both rotating chambers, and the teeth of the two rotating chambers mesh with each other radially to drive the two rotating chambers to rotate synchronously, and one end of one of the rotating rods is fixedly connected to a rocker handle.

[0010] Preferably, an annular sealing ring is provided between the fixed chamber and the rotating chamber.

[0011] Preferably, two pre-filled tanks are fixedly installed on the top shell. The two pre-filled tanks are used to put liquid samples and test reagents into the tanks respectively. One end of each pre-filled tank is connected to a delivery pipe A, and the other end of each delivery pipe A is connected to a delivery pipe B. The two delivery pipes B are respectively connected to two fixed chambers.

[0012] Preferably, the top shell is provided with a fulcrum column, one end of which is rotatably connected to a lever plate. The lever plate is provided with two sliding grooves, and each of the two sliding grooves is slidably connected to an L-shaped push-pull rod. The other end of each of the two push-pull rods is fixedly connected to a piston. The two push-pull rods and the two pistons are slidably connected to the delivery pipe B that is close to them. Both the delivery pipe A and the delivery pipe B are equipped with one-way valves.

[0013] Preferably, an electric actuator A is fixedly installed inside the top shell, and a hemispherical protrusion is fixedly connected to the output end of the electric actuator A. The protrusion abuts against one end of the lever plate, and a fixing plate is fixedly connected to the outside of the push-pull rod. A spring is fixedly connected between the fixing plate and the nearby delivery pipe B.

[0014] Preferably, a slide rail is fixedly connected inside the top shell, a slider is slidably connected inside the slide rail, the slider is fixedly connected to the fulcrum column, an electric actuator B is fixedly connected inside the slide rail, and the output end of the electric actuator B is fixedly connected to the slider.

[0015] Compared with existing technologies, this invention has the following advantages: It achieves automatic, non-powered mixing of samples and reagents through a spiral guide plate, eliminating manual shaking and avoiding problems of uneven mixing and low efficiency; it employs a toothed drive to simultaneously discharge from two rotating chambers, combined with a lever-piston pump suction structure and adjustable fulcrum, allowing for precise control and flexible adjustment of the sample-to-reagent ratio, significantly reducing manual mixing errors; the conical shell design ensures smooth material flow and prevents residual liquid accumulation, while the sealed structure effectively prevents leakage; the entire system integrates pre-storage, quantitative delivery, simultaneous discharge, and in-situ mixing, meeting the mixing requirements for different additives and suitable for rapid on-site testing, significantly improving testing efficiency, reducing labor intensity, and enhancing practicality and versatility. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a sectional view of the front view of the top shell of the present invention; Figure 3 This is a cross-sectional view of the top shell, bottom shell, and guide vane of the present invention. Figure 4 This is a partial structural diagram of the present invention; Figure 5 This is a schematic diagram of the fixed chamber structure of the present invention; Figure 6 This is a cross-sectional view of the front view of the conveying pipe A and the conveying pipe B of the present invention; Figure 7 This is a cross-sectional view of the top view of the conveying pipe B of the present invention; Figure 8 This is a top view of the bottom shell and the guide plate of the present invention; Figure 9 This is a schematic diagram of the storage compartment of the present invention; Figure 10 This is a schematic diagram of the slide rail and fulcrum column of the present invention.

[0017] The components are as follows: 1. Top shell; 2. Bottom shell; 3. Guide plate; 4. Inlet; 5. Outlet; 6. Storage bin; 601. Fixed bin; 602. Rotating bin; 7. Rotating rod; 8. Tooth; 9. Fixed column; 10. Handle; 11. Sealing ring; 12. Pre-filled tank; 13. Conveying pipe A; 14. Conveying pipe B; 15. Pivot column; 16. Lever plate; 17. Sliding groove; 18. Push-pull rod; 19. Piston; 20. One-way valve; 21. Electric actuator A; 22. Protrusion; 23. Spring; 24. Slide rail; 25. Slider; 26. Electric actuator B. Detailed Implementation

[0018] like Figures 1-10As shown, a quantitative detection device for food additives includes a top shell 1 and a bottom shell 2. The bottom of the bottom shell 2 is supported by several legs. A guide plate 3 is fixedly connected between the top shell 1 and the bottom shell 2. The guide plate 3 has a spiral structure, with its plate body extending in a continuous spiral shape. A fluid channel is formed inside the guide plate 3 along the spiral trajectory. One end of the guide plate 3 has an inlet 4 communicating with the bottom end of the top shell 1, and the other end has an outlet 5 communicating with the bottom shell 2. The bottom end of the top shell 1 is conical, and its bottom end also has a discharge port A. The conical structure at the bottom end of the top shell 1 and the discharge port A allow gravity to guide the sample and reagents rapidly. The feed is concentrated into the inlet 4 of the guide plate 3 to ensure smooth discharge. The bottom shell 2 has two symmetrical conical ends, and the bottom end of the bottom shell 2 is also provided with a discharge port B. The symmetrical conical design at both ends of the bottom shell 2 and the discharge port B can guide the mixed test liquid to quickly collect and discharge, avoiding liquid accumulation in the bottom shell 2. Two pre-filled tanks 12 are fixedly installed on the top shell 1. The two pre-filled tanks 12 are used to put liquid samples and test reagents into the tanks respectively. One end of each of the two pre-filled tanks 12 is connected to a conveying pipe A13, and the other end of each of the two conveying pipes A13 is connected to a conveying pipe B14. The two conveying pipes B14 are respectively connected to two fixed chambers 601. The connection structure of the canister 12, the delivery pipe A13, and the delivery pipe B14 enables the pre-storage and automatic delivery of samples and test reagents, eliminating the need for repeated manual additions, simplifying the operation process, and avoiding human error. The top shell 1 contains a fulcrum column 15, one end of which is rotatably connected to a lever plate 16. The lever plate 16 has two sliding grooves 17, each containing an L-shaped push-pull rod 18. The other ends of both push-pull rods 18 are fixedly connected to pistons 19. Both push-pull rods 18 and pistons 19 are slidably connected to the delivery pipe B14, which is adjacent to them. The delivery pipes A13 and B14... Each of the four components is equipped with a one-way valve 20. When the piston 19 moves, the one-way valve 20 in the delivery pipe A13 opens and the one-way valve 20 in the delivery pipe B14 closes, starting to extract liquid from the pre-filled tank 12. When the piston 19 moves in the opposite direction, the one-way valve 20 in the delivery pipe A13 closes and the one-way valve 20 in the delivery pipe B14 opens, starting to discharge the extracted liquid into the corresponding fixed chamber 601. Through the cooperation of the lever plate 16, the L-shaped push-pull rod 18, the piston 19 and the one-way valve 20, a mechanical pump-type quantitative delivery structure is formed. By controlling the opening and closing of the one-way valve 20, the accurate extraction and quantitative delivery of samples and test reagents can be achieved.

[0019] The top shell 1 has two storage compartments 6 inside, which are used to hold liquid samples and test reagents, respectively. When the discharge ends of the two storage compartments 6 rotate, they discharge the liquid samples and test reagents to the bottom of the top shell 1. Each storage compartment 6 includes a fixed compartment 601 with a "6"-shaped cross-section and a rotating compartment 602. The rotating compartment 602 rotates relative to the fixed compartment 601, and the two are in communication. A fixed column 9 is fixedly connected between one side of the fixed compartment 601 and the inner wall of the top shell 1, and a rotating rod 7 is fixedly connected to one side of the rotating compartment 602. The rotating rod 7 passes through the top shell 1 and is rotatably connected to it. Discharge is achieved by the rotation of the rotating compartment 602 relative to the fixed compartment 601. Several teeth 8 are fixedly connected to the outer sides of both rotating compartments 602. The teeth 8 of the rotating chamber 602 mesh radially to drive the two rotating chambers 602 to rotate synchronously. One end of one of the rotating rods 7 is fixedly connected to a crank handle 10. The outer teeth 8 of the two rotating chambers 602 mesh with each other, cooperating with the crank handle 10 to drive the two rotating chambers 602 to rotate synchronously, ensuring that the sample and test reagent are discharged synchronously. An annular sealing ring 11 is provided between the fixed chamber 601 and the rotating chamber 602 to effectively seal the rotation gap between them and prevent sample and reagent leakage. An electric actuator A21 is fixedly installed inside the top shell 1. The output end of the electric actuator A21 is fixedly connected to a hemispherical protrusion 22, which abuts against one end of the lever plate 16. A fixing plate is fixedly connected to the outer side of the push-pull rod 18, and a spring 23 is fixedly connected between the fixing plate and the adjacent conveying pipe B14. The electric actuator A21 and the hemispherical protrusion 22 cooperate to drive the lever plate 16. Combined with the reset structure of the spring 23 and the fixing plate, the piston 19 automatically reciprocates, completing automatic quantitative conveying and replacing manual operation. A slide rail 24 is fixedly connected inside the top shell 1, and the slide rail 24 slides within the top shell 1. A slider 25 is connected to a fulcrum column 15. An electric actuator B26 is fixedly connected inside the slide rail 24. The output end of the electric actuator B26 is fixedly connected to the slider 25. The position of the fulcrum column 15 and the lever plate 16 is adjusted by the electric actuator B26, changing the lever arm ratio at both ends of the lever, thereby adjusting the reciprocating movement distance of the two pistons 19. This allows for stepless adjustment of the sample and test reagent ratio, adapting to the ratio requirements of different additives and different test items, improving the versatility and flexibility of the device, and enabling multi-scenario applications without replacing parts.

[0020] The bottom shell 2 and the spiral structure guide plate 3 work together to form a continuous spiral fluid channel, which enables the sample and test reagent to be automatically and fully mixed during the flow process without manual shaking, thus solving the problems of uneven mixing and low efficiency caused by manual mixing. At the same time, the integrated storage chamber 6 realizes quantitative discharge, which integrates quantitative feeding and mechanical mixing, simplifies the detection process, improves detection efficiency and accuracy, and meets the needs of rapid on-site detection of food additives.

[0021] In use, before testing, the sample liquid to be tested and the test reagent are respectively loaded into two pre-filled tanks 12. The electric push rod A21 drives the hemispherical protrusion 22 to reciprocate and extend, pushing the lever plate 16 to swing around the fulcrum column 15. The lever plate 16 drives the L-shaped push-pull rod 18 and the piston 19 to slide in the delivery pipe B14, and cooperates with the one-way valve 20 to realize the pumping action: when the piston 19 moves outward, the delivery pipe A13 is open and the delivery pipe B14 is closed, and a quantitative liquid is drawn from the pre-filled tank 12; when the piston 19 moves inward, the delivery pipe A13 is closed and the delivery pipe B14 is open, and the liquid is sent into the fixed chamber 601. The spring 23 drives the fixed plate and the push-pull rod 18 to automatically reset, ensuring that the reciprocating motion of the piston 19 is stable and reliable, realizing accurate and quantitative delivery of materials, and avoiding the ratio error caused by manual measurement.

[0022] Next, the electric actuator B26 can push the slider 25 and the fulcrum column 15 to move along the slide rail 24, change the position of the lever fulcrum, and then adjust the swing amplitude at both ends of the lever, so that the stroke of the two pistons 19 changes differently, thereby flexibly adjusting the volume ratio of sample to test reagent. It can adapt to the various ratio requirements required for different additive detection, improve the versatility of the device, and meet the needs of multi-item detection without replacing parts.

[0023] After ensuring consistent material ratios, the operator turns the crank handle 10, which in turn drives the rotating chamber 602 on one side via the rotating rod 7. The two rotating chambers 602 rotate synchronously in the same direction by meshing with the outer teeth 8, so that the sample and reagent are discharged simultaneously in a predetermined ratio, avoiding uneven local concentrations caused by sequential feeding and ensuring accurate initial mixing ratios. The sealing ring 11 between the fixed chamber 601 and the rotating chamber 602 prevents leakage during rotation, ensuring accurate discharge volume. The bottom of the cone-shaped guide and centralized discharge top shell 1 has a cone-shaped structure, which allows the synchronously discharged sample and reagent to quickly converge to the discharge port A under gravity and smoothly enter the feed port 4 of the spiral guide plate 3, avoiding material residue and accumulation in the top shell 1, ensuring that all materials enter the mixing channel and improving the accuracy of quantitative detection.

[0024] Next, after the material is fully mixed by the spiral flow channel and enters the spiral guide plate 3, it flows downward along the continuous spiral fluid channel. Under the combined action of centrifugal force and gravity, it continuously rolls and agitates, achieving automatic mixing without power. There is no need for manual vibration or electric stirring, which solves the problems of uneven mixing and low efficiency caused by manual mixing.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quantitative detection device for food additives, characterized in that: It includes a top shell (1) and a bottom shell (2). A guide plate (3) is fixedly connected between the top shell (1) and the bottom shell (2). The guide plate (3) has a spiral structure. The plate body of the guide plate (3) extends in a continuous spiral shape. A fluid channel is formed inside the guide plate (3) along the spiral trajectory. One end of the guide plate (3) is provided with an inlet (4) that communicates with the bottom end of the top shell (1), and the other end is provided with an outlet (5) that communicates with the bottom shell (2). The top shell (1) has two storage compartments (6) inside. The two storage compartments (6) are used to hold liquid samples and test reagents respectively. When the discharge end of the two storage compartments (6) rotates, it is used to discharge the additives and test reagents to the bottom end of the top shell (1).

2. The food additive quantitative detection device according to claim 1, characterized in that: The bottom of the top shell (1) is conical, and a discharge port A is provided at the bottom.

3. The food additive quantitative detection device according to claim 1, characterized in that: The bottom shell (2) has two symmetrical cone shapes at both ends, and the bottom end of the bottom shell (2) is also provided with a discharge port B.

4. The food additive quantitative detection device according to claim 1, characterized in that: The storage compartment (6) includes a fixed compartment (601) with a cross-section in the shape of a "6" and a rotating compartment (602). The rotating compartment (602) rotates relative to the fixed compartment (601). A fixed column (9) is fixedly connected between one side of the fixed compartment (601) and the inner wall of the top shell (1). A rotating rod (7) is fixedly connected to one side of the rotating compartment (602). The rotating rod (7) passes through the top shell (1) and is rotatably connected to the top shell (1).

5. The food additive quantitative detection device according to claim 4, characterized in that: Several teeth (8) are fixedly connected to the outer sides of the two rotating chambers (602). The teeth (8) of the two rotating chambers (602) mesh with each other radially to drive the two rotating chambers (602) to rotate synchronously. One end of one of the rotating rods (7) is fixedly connected to a crank (10).

6. The food additive quantitative detection device according to claim 4, characterized in that: An annular sealing ring (11) is provided between the fixed chamber (601) and the rotating chamber (602).

7. The food additive quantitative detection device according to claim 1, characterized in that: Two pre-filled tanks (12) are fixedly installed on the top shell (1). The two pre-filled tanks (12) are used to put liquid samples and test reagents into the tanks respectively. One end of each pre-filled tank (12) is connected to a delivery pipe A (13), and the other end of each delivery pipe A (13) is connected to a delivery pipe B (14). The two delivery pipes B (14) are connected to two fixed chambers (601) respectively.

8. The food additive quantitative detection device according to claim 7, characterized in that: The top shell (1) is provided with a fulcrum column (15). One end of the fulcrum column (15) is rotatably connected to a lever plate (16). The lever plate (16) is provided with two sliding grooves (17). Each of the two sliding grooves (17) is slidably connected to an L-shaped push-pull rod (18). The other end of each of the two push-pull rods (18) is fixedly connected to a piston (19). Both the two push-pull rods (18) and the two pistons (19) are slidably connected to the adjacent delivery pipe B (14). Both the delivery pipe A (13) and the delivery pipe B (14) are equipped with a one-way valve (20).

9. The food additive quantitative detection device according to claim 8, characterized in that: An electric push rod A (21) is fixedly installed inside the top shell (1). A hemispherical protrusion (22) is fixedly connected to the output end of the electric push rod A (21). The protrusion (22) abuts against one end of the lever plate (16). A fixing plate is fixedly connected to the outside of the push-pull rod (18). A spring (23) is fixedly connected between the fixing plate and the delivery pipe B (14) that is close to it.

10. A quantitative detection device for food additives according to claim 8, characterized in that: The top shell (1) is fixedly connected to a slide rail (24), and a slider (25) is slidably connected inside the slide rail (24). The slider (25) is fixedly connected to the fulcrum column (15). An electric actuator B (26) is fixedly connected inside the slide rail (24), and the output end of the electric actuator B (26) is fixedly connected to the slider (25).

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