A sample pretreatment device for detecting heavy metal ions in food
By combining the grinding wheel with the cylindrical groove, the problem of insufficient food grinding in existing technologies is solved, enabling efficient crushing and mixing of food samples and improving the accuracy of testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN CCIC FAIRREACH FOOD SAFETY TESTING
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-31
AI Technical Summary
In existing heavy metal ion detection devices for food, the diameter of the grinding head is smaller than that of the strip grinding groove during the grinding process. This causes the food to move outward during grinding, making it impossible to fully grind the outermost part and reducing the quality of pretreatment.
The grinding wheel is used in conjunction with the cylindrical groove. The grinding components, driven by hydraulic push rods and motors, ensure that the food is fully ground in the cylindrical groove. The movable opening and closing components enable rapid discharge. Combined with the mixing components, the mixing efficiency of the sample and the test liquid is improved.
The grinding efficiency of the sample pretreatment device for heavy metal ion detection in food has been improved, ensuring that food samples are fully crushed and quickly mixed, thereby improving the accuracy of detection.
Smart Images
Figure CN224581235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of food pretreatment devices, specifically a sample pretreatment device for detecting heavy metal ions in food. Background Technology
[0002] Food processing often involves the addition of additives, which inevitably contain some heavy metals. Excessive intake of heavy metals can cause great harm to the human body. For example, lead can directly damage brain cells; arsenic is carcinogenic and long-term exposure can easily lead to chronic poisoning; chromium can easily cause diarrhea, tuberculosis, bronchitis, and dermatitis; cadmium mainly accumulates in the kidneys and can easily lead to changes in the function of the urinary system; and cobalt can cause radiation damage to the skin.
[0003] The prior art, disclosed in CN218381950U, provides a sample pretreatment device for heavy metal ion detection in food. This device includes a solid food sample processing mechanism that allows for simple grinding of solid food. The powdered solid food enters the heavy metal ion detection tank, where it dissolves and mixes better, thus pre-treating the solid food sample and improving the accuracy of subsequent detection. The device allows observation of reagent color changes through an observation window. An external air supply device, such as a blower, is connected to the aeration and homogenization structure to aerate the reagent within the tank. The continuous bursting of bubbles causes the reagent to tumble, improving the uniformity of the sample-reagent mixture. Pressure is released via a pressure relief valve.
[0004] The aforementioned patent primarily uses a grinding head with a rotating strip grinding trough to grind food. However, in this method of grinding food, because the diameter of the grinding head is smaller than that of the strip grinding trough, when the food is being ground on the strip grinding trough, the food will move outward due to the centrifugal force of the rotating strip grinding trough. The grinding head cannot grind the outermost food accordingly, which directly reduces the degree of grinding of the food, thus greatly reducing the pre-processing quality of the food sample by the food sample pre-processing device. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sample pretreatment device for detecting heavy metal ions in food, thus solving the above-mentioned technical problems.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a sample pretreatment device for heavy metal ion detection in food, comprising a device body, a swing door mounted on one side of the device body, an adjustment component fixedly mounted on the top of the device body, and an opening and closing component fixedly mounted on the side of the device body different from the side where the swing door is located. The opening and closing component is used for placing and dropping food. The device body includes an outer shell, with a straight groove extending through the opening and closing component. The opening and closing component is movably located within the straight groove. A cylindrical groove is formed on the top of the outer shell. The adjustment component includes a telescopic grinding component, which contains a rotating grinding wheel adapted to be located within the cylindrical groove. The grinding wheel's adaptation to be located within the cylindrical groove allows the rotation of the grinding wheel to directly and thoroughly grind and pulverize the food within the cylindrical groove, greatly improving the thoroughness of food grinding in the sample pretreatment device for heavy metal ion detection in food.
[0007] Furthermore, the adjustment assembly also includes a locking top plate fixedly installed on the top of the outer casing. A support frame is fixedly installed at the end of the locking top plate away from the grinding assembly. A hydraulic push rod is fixedly installed at the center of the end of the support frame away from the locking top plate. The telescopic end of the hydraulic push rod penetrates the support frame and the locking top plate and is detachably installed on the grinding assembly. This allows the extension and retraction of the hydraulic push rod to directly control the extension and retraction of the grinding assembly, improving the overall integrity of the internal structure of the food heavy metal ion detection sample pretreatment device.
[0008] Furthermore, the grinding assembly also includes a motor frame mounted on the telescopic end of the hydraulic push rod. A second motor is housed within the motor frame, and a connecting shaft is fixedly connected to the output end of the second motor. This connecting shaft is fixedly mounted on the grinding wheel. The fixed mounting of the connecting shaft on the grinding wheel makes the internal structure of the food heavy metal ion detection sample pretreatment device more robust and reliable, greatly improving the operational stability of the device.
[0009] Furthermore, the opening and closing assembly includes a fixed frame fixedly mounted on the outer casing. A straight shaft is fixedly mounted on one side of the fixed frame, and a double-threaded rod is rotatably mounted on the side of the fixed frame away from the straight shaft. A left locking body and a right locking body are movably mounted within the straight shaft and the double-threaded rod. The straight shaft is used to limit the movement of the left and right locking bodies. The left and right locking bodies are mutually compatible and can be sealed together. Both the left and right locking bodies are movably located within a straight groove. Because the left and right locking bodies are movably located within the straight groove, their movement is directly limited by the straight groove, improving the accuracy of the internal structure operation of the food heavy metal ion detection sample pretreatment device.
[0010] Furthermore, a handle is fixedly installed on the side of the double-threaded rod away from the fixed frame. The handle is used to drive the double-threaded rod to rotate, and the double-threaded rod is used to drive the movement of the left and right locking bodies. The double-threaded rod drives the movement of the left and right locking bodies, thereby enabling the left and right locking bodies to move closer or separate synchronously, improving the practicality of the sample pretreatment device for heavy metal ion detection in food.
[0011] Furthermore, a liquid tube and a material tube are connected and installed on one side of the outer shell. A mixing assembly for mixing food and the detection solution is installed inside the outer shell. The end of the liquid tube is located directly above the mixing assembly, and the end of the material tube is located above the opening and closing assembly. The material tube is used for adding the food to be tested, and the liquid tube is used for adding the detection solution. The use of the liquid tube for adding the detection solution improves the efficiency of adding the detection solution inside the sample pretreatment device for heavy metal ion detection in food.
[0012] Furthermore, the mixing assembly includes a first motor fixedly mounted on the bottom of the outer casing. A mounting plate is detachably connected to the output end of the first motor. A mixing tank for mixing food and the detection liquid is fixedly connected to the end of the mounting plate furthest from the first motor. This connection allows the first motor to directly rotate the mixing tank, significantly improving the efficiency of heavy metal ion detection within the food sample pretreatment device. Beneficial effects
[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention places the food to be tested above the opening and closing assembly, and simultaneously provides a grinding wheel that can move up and down and rotate at high speed within a cylindrical groove on the top of the outer shell. This allows the grinding wheel to confine the food within the cylindrical groove on the top of the outer shell and on the opening and closing assembly while grinding and pulverizing it. At this time, the grinding wheel can thoroughly grind and pulverize the food, and the movable opening and closing assembly can quickly discharge the material, greatly improving the practicality of the sample pretreatment device for heavy metal ion detection in food. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the pretreatment device for detecting heavy metal ions in food according to the present invention. Figure 2 This is a three-dimensional structural diagram of the opening and closing component of this utility model; Figure 3 This is a three-dimensional structural diagram of the main body of the device of this utility model; Figure 4 This is a three-dimensional structural diagram of the hybrid component of this utility model; Figure 5 This is a three-dimensional structural diagram of the adjustment component of this utility model; Figure 6 This is a partially enlarged three-dimensional structural diagram of the present invention, A.
[0015] In the diagram: 1. Device body; 2. Swing door; 3. Opening and closing assembly; 4. Adjustment assembly; 31. Fixing frame; 32. Left locking body; 33. Right locking body; 34. Straight shaft; 35. Rotary handle; 36. Double threaded rod; 11. Outer shell; 12. Mixing assembly; 13. Liquid pipe; 14. Straight trough; 15. Material pipe; 16. Cylindrical trough; 121. Mixing tank; 122. Mounting plate; 123. First motor; 41. Hydraulic push rod; 42. Support frame; 43. Locking top plate; 44. Grinding assembly; 441. Grinding wheel; 442. Connecting shaft; 443. Motor frame; 444. Second motor. Detailed Implementation
[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.
[0017] Example The following is in conjunction with the appendix Figure 1 - Appendix Figure 6This application provides a further detailed description. A sample pretreatment device for heavy metal ion detection in food includes a device body 1. A swing door 2 is mounted on one side of the device body 1, and an adjustment component 4 is fixedly mounted on the top of the device body 1. An opening and closing component 3 is fixedly mounted on the side of the device body 1 different from the side where the swing door 2 is located. The opening and closing component 3 is used for placing and dropping food. The device body 1 includes an outer shell 11, with a straight groove 14 extending through the opening and closing component 3. The opening and closing component 3 is movably located within the straight groove 14. A cylindrical groove 16 is formed on the top of the outer shell 11. The adjustment component 4 includes a telescopic grinding component 44, which includes a rotating grinding wheel 441 adapted to the cylindrical groove 16. Inside the groove 16, the adjusting assembly 4 also includes a locking top plate 43 fixedly installed on the top of the outer casing 11. A support frame 42 is fixedly installed at the end of the locking top plate 43 away from the grinding assembly 44. A hydraulic push rod 41 is fixedly installed at the center of the end of the support frame 42 away from the locking top plate 43. The telescopic end of the hydraulic push rod 41 penetrates the support frame 42 and the locking top plate 43 and is detachably installed on the grinding assembly 44. The grinding assembly 44 also includes a motor frame 443 installed on the telescopic end of the hydraulic push rod 41. A second motor 444 is provided inside the motor frame 443. A connecting shaft 442 is fixedly connected to the output end of the second motor 444. The connecting shaft 442 is fixedly installed on the grinding wheel 441. 3 includes a fixed frame 31 fixedly mounted on the outer casing 11. A straight shaft 34 is fixedly mounted on one side of the fixed frame 31. A double threaded rod 36 is rotatably mounted on the side of the fixed frame 31 away from the straight shaft 34. A left locking body 32 and a right locking body 33 are movably mounted within the straight shaft 34 and the double threaded rod 36. The straight shaft 34 is used to limit the movement of the left locking body 32 and the right locking body 33. The left locking body 32 and the right locking body 33 are mutually compatible and can be sealed together. Both the left locking body 32 and the right locking body 33 are movably located within the straight groove 14. A handle 35 is fixedly mounted on the side of the double threaded rod 36 away from the fixed frame 31. The handle 35 is used to drive the double threaded rod 36 to rotate. The double threaded rod 36 is used to drive the left locking body. The movement of 32 and right locking body 33, liquid pipe 13 and material pipe 15 are installed on one side of the outer shell 11, and a mixing component 12 for mixing food and test liquid is provided in the inner cavity of the outer shell 11. The end of liquid pipe 13 is located directly above the mixing component 12, and the end of material pipe 15 is located above the opening and closing component 3. Material pipe 15 is used for adding food to be tested, and liquid pipe 13 is used for adding test liquid. The mixing component 12 includes a first motor 123 fixedly installed at the bottom of the outer shell 11. The output end of the first motor 123 is detachably connected to a mounting plate 122. The end of the mounting plate 122 away from the first motor 123 is fixedly connected to a mixing tank 121 for mixing food and test liquid.
[0018] Since the diameter of the grinding wheel 441 is the same as the diameter of the cylindrical groove 16 on the top of the outer shell 11, when the grinding wheel 441 moves downward through the hydraulic push rod 41 and rotates through the second motor 444, the grinding wheel 441 can fully squeeze and crush the food on the left locking body 32 and the right locking body 33. This allows the food in the food sample pretreatment device for heavy metal ion detection to be fully crushed by the grinding wheel 441 and finally fall into the mixing tank 121 through the left locking body 32 and the right locking body 33 moving to the sides.
[0019] Since the end of the liquid tube 13 is located directly above the mixing component 12 and the end of the material tube 15 is located above the opening and closing component 3, the food entering the outer shell 11 from the material tube 15 will fall directly onto the closed left locking body 32 and right locking body 33, and the detection liquid entering from the liquid tube 13 can fall directly into the mixing component 12, which greatly improves the efficiency of the food heavy metal ion detection sample pretreatment device.
[0020] Since the left locking body 32 and the right locking body 33 are respectively threaded to the two sides of the double threaded rod 36 with different directions of rotation, and the movement of the left locking body 32 and the right locking body 33 is assisted and limited by the straight shaft 34, when the user turns the handle 35, the rotating double threaded rod 36 can directly move the left locking body 32 and the right locking body 33 inward or outward. The user can also replace the handle 35 with an automatic rotating motor to facilitate the user's operation.
[0021] The working principle of this utility model is explained below: Unless otherwise specified, all internal mechanical structures of the food heavy metal ion detection sample pretreatment device are threaded. To allow for a more intuitive observation of the technical features, bolt connections are appropriately concealed in the diagram. During use, the left locking body 32 and right locking body 33 are in a sealed closed state. The user places the food to be tested for heavy metal ions into the left locking body 32 and right locking body 33 through the material pipe 15. The user then activates the hydraulic push rod 41 to move the grinding component 44 downwards along the cylindrical groove 16. This, combined with the second motor 444 driving the grinding wheel 441 to rotate at high speed, thoroughly grinds and pulverizes the food on the left locking body 32 and right locking body 33. The user then rotates the handle 35 to move the left locking body 32... After separating from the right-hand locking assembly 33, the ground and pulverized food will fall directly into the mixing tank 121 inside the mixing component 12. Then, the user adds the detection liquid into the mixing tank 121 through the liquid pipe 13. Subsequently, the user starts the first motor 123, which causes the mixing tank 121 to rotate. At this time, the centrifugal force inside the mixing tank 121 can fully mix the ground and pulverized food and the detection liquid together. Then, the user can observe it through the swing door 2. Through the combined use of the above structure, the food heavy metal ion detection sample pretreatment device can fully grind and pulverize the food during use, and allow the ground and pulverized food to fall quickly and be quickly added to the detection liquid, which greatly improves the efficiency of the food heavy metal ion detection sample pretreatment device for detecting heavy metal ions in food.
[0022] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
Claims
1. A sample pretreatment device for detecting heavy metal ions in food, characterized in that, The device includes a main body (1), a swing door (2) is mounted on one side of the main body (1), an adjustment component (4) is fixedly mounted on the top of the main body (1), and an opening and closing component (3) is fixedly mounted on the side of the main body (1) that is different from the side where the swing door (2) is located. The opening and closing component (3) is used for placing and dropping food. The main body (1) includes an outer shell (11), and a straight groove (14) is opened through the opening and closing component (3) in the outer shell (11). The opening and closing component (3) is movably located in the straight groove (14). A cylindrical groove (16) is opened on the top of the outer shell (11). The adjustment component (4) includes a telescopic grinding component (44), and a rotating grinding wheel (441) is included in the grinding component (44). The grinding wheel (441) is adapted to be located in the cylindrical groove (16).
2. The sample pretreatment device for heavy metal ion detection in food according to claim 1, characterized in that: The adjustment assembly (4) also includes a locking top plate (43) fixedly installed on the top of the outer shell (11). A support frame (42) is fixedly installed at one end of the locking top plate (43) away from the grinding assembly (44). A hydraulic push rod (41) is fixedly installed at the center of one end of the support frame (42) away from the locking top plate (43). The telescopic end of the hydraulic push rod (41) penetrates the support frame (42) and the locking top plate (43) and is detachably installed on the grinding assembly (44).
3. The sample pretreatment device for detecting heavy metal ions in food according to claim 2, characterized in that: The grinding assembly (44) also includes a motor frame (443) mounted on the telescopic end of the hydraulic push rod (41). A second motor (444) is provided inside the motor frame (443). The output end of the second motor (444) is fixedly connected to a connecting shaft (442), which is fixedly mounted on the grinding wheel (441).
4. The sample pretreatment device for heavy metal ion detection in food according to claim 1, characterized in that: The opening and closing assembly (3) includes a fixed frame (31) fixedly installed on the outer shell (11). A straight shaft (34) is fixedly installed on one side of the fixed frame (31). A double threaded rod (36) is rotatably installed on the side of the fixed frame (31) away from the straight shaft (34). A left locking body (32) and a right locking body (33) are movably installed in the straight shaft (34) and the double threaded rod (36). The straight shaft (34) is used for limiting the movement of the left locking body (32) and the right locking body (33). The left locking body (32) and the right locking body (33) are adapted to each other and can be sealed. The left locking body (32) and the right locking body (33) are both movably located in the straight groove (14).
5. The sample pretreatment device for heavy metal ion detection in food according to claim 4, characterized in that: A throttle (35) is fixedly installed on the side of the double threaded rod (36) away from the fixed frame (31). The throttle (35) is used to drive the double threaded rod (36) to rotate. The double threaded rod (36) is used to drive the movement of the left locking body (32) and the right locking body (33).
6. The sample pretreatment device for heavy metal ion detection in food according to claim 1, characterized in that: A liquid tube (13) and a material tube (15) are connected to one side of the outer shell (11). A mixing component (12) for mixing food and test liquid is provided in the inner cavity of the outer shell (11). The end of the liquid tube (13) is located directly above the mixing component (12), and the end of the material tube (15) is located above the opening and closing component (3). The material tube (15) is used for adding the food to be tested, and the liquid tube (13) is used for adding the test liquid.
7. The sample pretreatment device for detecting heavy metal ions in food according to claim 6, characterized in that: The mixing assembly (12) includes a first motor (123) fixedly installed at the bottom of the outer casing (11). The output end of the first motor (123) is detachably connected to a mounting plate (122). The end of the mounting plate (122) away from the first motor (123) is fixedly connected to a mixing tank (121) for mixing food and test liquid.