Food microbial testing and sampling device

Abstract

This utility model relates to the field of food testing technology and discloses a food microbial testing sampling device, including a testing chamber, a main control chip, and multiple sample storage tubes. A fixing plate is fixedly connected to the left side of the inner wall of the testing chamber, and a temperature adaptation mechanism is provided on the inner wall of the testing chamber. A sampling tube is slidably connected to the left side of the testing chamber, and an installation mechanism is provided at the right end of the sampling tube. A fixing mechanism is provided on the outer wall of the sample storage tubes, and an anti-slip mechanism is provided at the bottom of the testing chamber. The temperature adaptation mechanism includes a semiconductor cooling chip, the bottom of which is fixedly connected to the bottom of the inner wall of the testing chamber. In this utility model, cooling is achieved by activating the semiconductor cooling chip, and the diffusion of cold air is accelerated by heat dissipation fins and a fan. The heating wire, combined with the insulation plate, maintains the temperature, reduces heat loss, minimizes temperature fluctuations inside the chamber, and improves the practicality and safety of the device in complex environments.

Description

Technical Field

[0001] This utility model relates to the field of food testing technology, and in particular to a food microbial testing sampling device. Background Technology

[0002] Food microorganisms refer to microorganisms related to food, encompassing bacteria, fungi, and viruses. Food microorganisms are closely related to food safety and quality. Harmful microorganisms can cause food spoilage and lead to diseases, while beneficial microorganisms can be used in food fermentation production. In order to accurately grasp the types and quantities of microorganisms in food, people have developed food microorganism detection and sampling devices.

[0003] The food microbiology testing sampling device completes sample collection under sterile and uncontaminated conditions, ensuring that subsequent test data can accurately reflect the microbiological status of food. The device uses a sampling spoon or sterile pipette to collect food samples, then stores the samples in sterile sampling bottles, ensuring the originality of the microbial community and providing a scientific basis for food quality control.

[0004] Although food microbiology testing sampling devices can assess food safety risks, their storage conditions are poorly controlled. The devices lack a constant temperature structure, making it impossible to maintain sample temperature after sampling. This leads to microbial proliferation or death during transportation, affecting the accuracy of test results. Furthermore, for fermented foods, the sampling devices are not designed with anaerobic storage spaces, resulting in the inactivation of anaerobic microorganisms. Current solutions involve placing a miniature semiconductor cooling chip inside the sampling device and filling the anaerobic sampling bag with nitrogen or carbon dioxide, along with an oxygen indicator to monitor the environment. However, semiconductor cooling requires continuous power, portable devices have limited battery capacity, and long-distance transportation still necessitates additional ice packs. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a food microbial detection and sampling device, which aims to improve the problem that semiconductor refrigeration in the prior art requires continuous power supply and still requires additional ice boxes for long-distance transportation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a food microbial detection sampling device, comprising a detection box, a main control chip, and multiple sample storage tubes. A fixing plate is fixedly connected to the left side of the inner wall of the detection box, a temperature adaptation mechanism is provided on the inner wall of the detection box, a sampling tube is slidably connected to the left side of the detection box, an installation mechanism is provided at the right end of the sampling tube, a fixing mechanism is provided on the outer wall of the sample storage tube, and an anti-slip mechanism is provided at the bottom of the detection box.

[0007] The temperature adaptation mechanism includes a thermoelectric cooler, the bottom of which is fixedly connected to the bottom of the inner wall of the testing chamber. A heat dissipation fin is fixedly connected to the top of the thermoelectric cooler, and a heat dissipation fin is fixedly connected to the bottom of the main control chip. Heat dissipation holes are provided on both the left and right sides of the outer wall of the testing chamber. A cooling fan is fixedly connected to the inner wall of each of the two heat dissipation holes. Multiple heating wires are fixedly connected to the bottom of the fixing plate. Multiple insulation plates are fixedly connected to the inner wall of the testing chamber. A humidity regulating component is provided at the bottom of the inner wall of the testing chamber.

[0008] As a further description of the above technical solution:

[0009] The installation mechanism includes a reinforcing block, the left side of which is fixedly connected to the right end of the sampling tube. A slot is provided on the left side of the detection box. Two sliders are fixedly connected to the right side of the reinforcing block. A limiting groove is provided on the top left side of the detection box. A limiting block is slidably connected to the inner wall of the limiting groove. A sealing ring is fixedly connected to the left side of the detection box. A reinforcing component is provided at the bottom of the limiting block.

[0010] As a further description of the above technical solution:

[0011] The fixing mechanism includes multiple fixing rings, the inner walls of which are fixedly connected to the top of the outer wall of the sample preservation tube. The top of the fixing plate has multiple placement grooves, and the inner walls of the multiple placement grooves are fixedly connected to limit rings.

[0012] As a further description of the above technical solution:

[0013] The anti-slip mechanism includes a shock-absorbing pad, the top of which is fixedly connected to the bottom of the testing box, and multiple anti-slip strips are fixedly connected to the bottom of the shock-absorbing pad.

[0014] As a further description of the above technical solution:

[0015] The humidity control component includes a miniature hot air blower, the bottom of which is fixedly connected to the bottom of the inner wall of the detection box. A miniature motor is fixedly connected to the bottom of the inner wall of the detection box, and an air guide plate is fixedly connected to the output end of the miniature motor.

[0016] As a further description of the above technical solution:

[0017] The reinforcement component includes a magnetic strip one, the bottom of which is fixedly connected to the top of the limiting groove, and a magnetic strip two is fixedly connected to the inner wall of the limiting block.

[0018] As a further description of the above technical solution:

[0019] The inner walls of both heat dissipation holes are fixedly connected with filter screens, and the inner walls of both heat dissipation holes are fixedly connected with reinforcing mesh.

[0020] As a further description of the above technical solution:

[0021] A temperature detector and a humidity detector are fixedly connected to the rear inner wall of the detection box, and an adjustment panel is fixedly connected to the top of the main control chip.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the device is cooled by activating a semiconductor cooling chip, and the heat sink and fan accelerate the diffusion of cold energy. When the heating wire is activated, the temperature inside the device can be maintained, preventing food samples from being affected by low temperature. Combined with the insulation board, heat loss is reduced, greatly reducing temperature fluctuations inside the chamber. This makes the device suitable for different complex testing scenarios, greatly improving the practicality and safety of the device.

[0024] 2. In this utility model, by fixing the reinforcing block to the right end of the sampling tube, sliding the slider into the slot and sliding it backward, the sampling tube is initially limited. Then, the limiting block is slid into the limiting groove from above, and the two magnetic strips attract each other magnetically, thereby reinforcing the installation of the sampling tube. At the same time, the sealing ring can ensure that the liquid sample does not leak, ensuring the safety of the test, significantly improving the efficiency of sampling, and combining practicality and economy. Attached Figure Description

[0025] Figure 1 This is a perspective view of the food microbial detection and sampling device proposed in this utility model;

[0026] Figure 2 This is a front view of the food microbial detection and sampling device proposed in this utility model;

[0027] Figure 3 This is a split view of the main control chip of the food microbial detection and sampling device proposed in this utility model;

[0028] Figure 4 This is a cross-sectional view of the fixing plate of the food microbial detection sampling device proposed in this utility model;

[0029] Figure 5 This is a cross-sectional view of the detection box of the food microbial detection sampling device proposed in this utility model;

[0030] Figure 6 This is a split view of the sampling tube of the food microbial detection sampling device proposed in this utility model.

[0031] Legend:

[0032] 1. Testing box; 2. Fixing plate; 3. Main control chip; 4. Temperature adaptation mechanism; 401. Semiconductor cooling chip; 402. Heat sink fin one; 403. Heat sink fin two; 404. Heat dissipation hole; 405. Cooling fan; 406. Heating wire; 407. Insulation board; 408. Humidity control component; 4081. Miniature hot air blower; 4082. Miniature motor; 4083. Air guide plate; 409. Filter screen; 410. Reinforcing mesh; 5. Sampling tube; 6. Installation mechanism; 601. Reinforcing block; 602. Slot; 603. Slider; 604. Limiting groove; 605. Limiting block; 606. Sealing ring; 607. Reinforcing component; 6071. Magnetic strip one; 6072. Magnetic strip two; 7. Sample storage tube; 8. Fixing mechanism; 801. Limiting ring; 802. Placement groove; 803. Fixing ring; 9. Anti-slip mechanism; 901. Shock-absorbing pad; 902. Anti-slip strip; 10. Temperature detector; 11. Humidity detector; 12. Adjustment panel. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 3 , Figure 4 and Figure 5 This utility model provides an embodiment of a food microbial detection sampling device, including a detection box 1, a main control chip 3, and multiple sample preservation tubes 7. A fixing plate 2 is fixedly connected to the left side of the inner wall of the detection box 1 for placing samples. The main control chip 3 is fixedly connected to the right side of the inner wall of the detection box 1 for analyzing the detection results of the sensors in the device. A temperature adaptation mechanism 4 is provided on the inner wall of the detection box 1 for adjusting the temperature according to the type of food. A sampling tube 5 is slidably connected to the left side of the detection box 1 for collecting food samples. An installation mechanism 6 is provided at the right end of the sampling tube 5 for quickly installing the sampling tube 5 onto the detection box 1. Multiple sample preservation tubes 7 are fixedly connected to the inner wall of the detection box 1 for preserving food samples for easy analysis by the device. A fixing mechanism 8 is provided on the outer wall of the sample preservation tubes 7 for fixing the sample preservation tubes 7. An anti-slip mechanism 9 is provided at the bottom of the detection box 1 to prevent the device from sliding sideways.

[0035] The temperature adaptation mechanism 4 includes a thermoelectric cooler 401, which is used to regulate the temperature inside the device. The bottom of the thermoelectric cooler 401 is fixedly connected to the bottom of the inner wall of the detection chamber 1, and a heat dissipation fin 402 is fixedly connected to the top of the thermoelectric cooler 401. The heat dissipation fin 402 is used to accelerate the diffusion speed of the cold air generated by the thermoelectric cooler 401. A heat dissipation fin 403 is fixedly connected to the bottom of the main control chip 3, which is used to accelerate the heat dissipation speed of the main control chip 3. Heat dissipation holes 4 are provided on both the left and right sides of the outer wall of the detection chamber 1. 04. The heat dissipation holes 404 allow air circulation inside and outside the device. The inner walls of the two heat dissipation holes 404 are fixedly connected to cooling fans 405, which can accelerate the air flow. Multiple heating wires 406 are fixedly connected to the bottom of the fixed plate 2. The heating wires 406 are used to heat the inside of the device. Multiple insulation plates 407 are fixedly connected to the inner wall of the detection box 1. The multiple insulation plates 407 can maintain the temperature inside the device. A humidity regulating component 408 is provided at the bottom of the inner wall of the detection box 1. The humidity regulating component 408 is used to reduce the humidity inside the device.

[0036] The humidity control component 408 includes a miniature hot air blower 4081, which provides hot air into the device and causes moisture to be expelled from the device by sensing. The bottom of the miniature hot air blower 4081 is fixedly connected to the bottom of the inner wall of the detection box 1. A miniature motor 4082 is fixedly connected to the bottom of the inner wall of the detection box 1. The miniature motor 4082 drives the air guide plate 4083 to rotate. The output end of the miniature motor 4082 is fixedly connected to the air guide plate 4083, which is used to guide the flow direction of hot air.

[0037] Specifically, after the power to the testing chamber 1 is turned on and a self-test is completed, a suitable temperature is set according to the food type. When the sample requires low-temperature preservation, the semiconductor cooling chip 401 is activated. The cold air generated by the semiconductor cooling chip 401 is accelerated and diffused into the testing chamber 1 through the heat dissipation fins 402 on the top. At the same time, the cooling fan 405 on the outer wall of the testing chamber 1 is activated to accelerate airflow, so that the temperature inside the chamber drops to the target value quickly and remains stable. For room temperature food or when the temperature inside the device is too low, the heating wire 406 is controlled by the main control chip 3 to heat the food. The insulation plate 407 effectively reduces heat loss and keeps the temperature inside the chamber constant. During operation, the temperature sensor monitors the temperature inside the chamber in real time and feeds the data back to the main control chip 3. The main control chip 3 automatically adjusts the power of the semiconductor cooling chip 401 or the heating intensity of the heating wire 406 according to the temperature deviation to ensure that the temperature fluctuation is within a reasonable range and to provide a suitable environment for food sample preservation.

[0038] Reference Figure 3 , Figure 4 and Figure 6The installation mechanism 6 includes a reinforcing block 601, which facilitates the installation of the sampling tube 5. The left side of the reinforcing block 601 is fixedly connected to the right end of the sampling tube 5. A slot 602 is provided on the left side of the detection box 1. Two sliders 603 are fixedly connected to the right side of the reinforcing block 601. The sliders 603 slide in the slot 602 to facilitate quick installation of the reinforcing block 601 and the sampling tube 5. A limiting groove 604 is provided on the top left side of the detection box 1. A limiting block 605 is slidably connected to the inner wall of the limiting groove 604. The limiting block 605 is slidably connected to the limiting groove 604 from above to facilitate quick fixation of the sliders 603. A sealing ring 606 is fixedly connected to the left side of the detection box 1. The left side of the sealing ring 606 is in close contact with the reinforcing block 601 to prevent leakage of food samples. A reinforcing component 607 is provided at the bottom of the limiting block 605.

[0039] The reinforcement component 607 includes a magnetic strip 6071, the bottom of which is fixedly connected to the top of the limiting groove 604. A magnetic strip 6072 is fixedly connected to the inner wall of the limiting block 605. The magnetic strip 6071 and the magnetic strip 6072 are magnetically connected, which can reinforce the installation of the limiting block 605.

[0040] Specifically, when installing the sampling tube 5 using the installation mechanism 6, first align the reinforcing block 601 on the right side of the sampling tube 5 with the slot 602 on the left side of the detection box 1. The two sliders 603 on the reinforcing block 601 precisely fit into the slot 602. Push the sampling tube 5 horizontally in, and the sliders 603 slide along the slot 602 until the reinforcing block 601 is fully embedded in the left side of the detection box 1. Then, pick up the limiting block 605 and insert it from above the limiting groove 604 on the top left side of the detection box 1, allowing the limiting block 605 to slide down along the inner wall of the limiting groove 604. When the limiting block 605 has slid into place, the magnetic strip 6072 at the bottom of the limiting block 605 and the magnetic strip 6071 at the top of the limiting groove 604 generate a magnetic attraction, holding the limiting block 605 in place. The sampling tube 5 is firmly fixed, and the limiting block 605 locks the slider 603 from above to prevent it from loosening or falling out. During installation, the left side of the reinforcing block 601 is tightly attached to the sealing ring 606 on the detection box 1. The sealing ring 606 is tightly attached to the surface of the reinforcing block 601 to form a sealing barrier, which effectively prevents food specimens from leaking. When disassembling, you only need to pull the limiting block 605 upward with a little force to overcome the magnetic force of magnetic strip 6071 and magnetic strip 6072, and the sampling tube 5 can be pulled out horizontally. The whole operation process is simple and quick, taking into account both sealing performance and installation stability.

[0041] Reference Figure 1 , Figure 2 and Figure 3The fixing mechanism 8 includes multiple fixing rings 803, which are used to prevent the sample preservation tube 7 from falling off the placement groove 802. The inner walls of the multiple fixing rings 803 are fixedly connected to the top of the outer wall of the sample preservation tube 7. The top of the fixing plate 2 is provided with multiple placement grooves 802, which are used to place the sample preservation tube 7 on the fixing plate 2. The inner walls of the multiple placement grooves 802 are fixedly connected with limit rings 801, which are used to enhance the strength of the placement position.

[0042] The anti-slip mechanism 9 includes a shock-absorbing pad 901, the top of which is fixedly connected to the bottom of the detection box 1. The shock-absorbing pad 901 is used to reduce vibration. Multiple anti-slip strips 902 are fixedly connected to the bottom of the shock-absorbing pad 901. The multiple anti-slip strips 902 can increase friction. Filter screens 409 are fixedly connected to the inner walls of the two heat dissipation holes 404. Filter screens 409 are used to filter impurities in the air. Reinforcing meshes 410 are fixedly connected to the inner walls of the two heat dissipation holes 404. Reinforcing meshes 410 are used to protect the filter screens 409. A temperature detector 10 is fixedly connected to the rear inner wall of the detection box 1. The temperature detector 10 is used to detect the temperature inside the device and inside the sample storage tube 7. A humidity detector 11 is fixedly connected to the rear inner wall of the detection box 1. The humidity detector 11 is used to detect the humidity inside the device. An adjustment panel 12 is fixedly connected to the top of the main control chip 3. The adjustment panel 12 is used to control the internal components of the device.

[0043] Specifically, the sample preservation tube 7 containing the food sample is aligned with the placement groove 802 on the fixing plate 2 and gently placed vertically downwards. The fixing ring 803 at the top of the outer wall of the sample preservation tube 7 fits against the limiting ring 801 on the inner wall of the placement groove 802. The limiting ring 801 provides support, and the fixing ring 803 locks the edge of the placement groove 802 to prevent the sample preservation tube 7 from tilting or falling, ensuring that the sample preservation tube 7 is stably placed on the fixing plate 2. When the detection box 1 is placed on the operating table, the shock-absorbing pad 901 at the bottom can buffer vibration, and the anti-slip strip 902 at the bottom increases friction to prevent the detection box 1 from slipping. When the device moves or shifts, the temperature detector 10 and humidity detector 11 monitor the temperature data inside the test chamber 1 and the sample storage tube 7 in real time and transmit the data. When adjustment is needed, the temperature adaptation mechanism 4 and the humidity adjustment component 408 work to maintain the temperature and humidity stability inside the chamber. When the cooling fan 405 is running, air enters and exits the test chamber 1 through the heat dissipation hole 404. The filter screen 409 intercepts dust and impurities in the air to prevent impurities from entering the chamber and damaging the components. The reinforcing mesh 410 provides physical protection for the filter screen 409 to prevent the filter screen 409 from being damaged by external forces, thus ensuring the long-term stable operation of the device.

[0044] Working principle: After the device is powered on and performs a self-test, it adjusts the corresponding temperature according to the preset food type parameters. For samples requiring low temperature, the semiconductor cooling chip 401 is activated to achieve cooling. The generated cold air increases the heat exchange area through the heat dissipation fins 402, accelerating the diffusion of cold air into the chamber. At the same time, the cooling fan 405 forces air convection, accelerates air circulation, and improves cooling efficiency. When processing room temperature food, the heating wire 406 heats the inside of the chamber. The insulation plate 407 uses heat insulation material to block heat transfer and reduce energy consumption. During device operation, the temperature sensor continuously monitors the environment inside the chamber and dynamically adjusts the cooling effect of the semiconductor cooling chip 401 or the heating effect of the heating wire 406 to ensure that the temperature inside the chamber is accurately maintained within the target range, meeting the stringent requirements of different food samples for storage environment.

[0045] Furthermore, during the installation of the sampling tube 5, the slider 603 on the reinforcing block 601 and the slot 602 of the detection box 1 form an embedded guiding structure. Initial positioning is achieved by horizontal pushing, reducing installation errors. After the limiting block 605 is inserted into the limiting groove 604, the magnetic strip 1 6071 and the magnetic strip 2 6072 generate a continuous and stable adsorption force by the attraction of their magnetic poles, fixing the limiting block 605 in the limiting groove 604. At the same time, the bottom of the limiting block 605 forms a mechanical limit on the slider 603, preventing the sampling tube 5 from axially loosening or falling out, thus achieving double reinforcement. In addition, the contact and compression between the reinforcing block 601 and the sealing ring 606, through the elastic deformation of the sealing ring 606, makes the sealing ring 606 tightly adhere to the surface of the reinforcing block 601, filling the tiny gaps and building a sealing barrier to prevent sample leakage. During disassembly, the limiting block 605 is pulled out by external force to overcome the magnetic force, releasing the mechanical constraint, and the sampling tube 5 can be easily pulled out, achieving quick disassembly and reuse.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A food microbiology detection and sampling device, comprising a detection box (1), a main control chip (3), and multiple sample preservation tubes (7), characterized in that: A fixing plate (2) is fixedly connected to the left side of the inner wall of the detection box (1). A temperature adaptation mechanism (4) is provided on the inner wall of the detection box (1). A sampling tube (5) is slidably connected to the left side of the detection box (1). An installation mechanism (6) is provided at the right end of the sampling tube (5). A fixing mechanism (8) is provided on the outer wall of the sample storage tube (7). An anti-slip mechanism (9) is provided at the bottom of the detection box (1). The temperature adaptation mechanism (4) includes a semiconductor cooling chip (401). The bottom of the semiconductor cooling chip (401) is fixedly connected to the bottom of the inner wall of the detection box (1). A heat dissipation fin (402) is fixedly connected to the top of the semiconductor cooling chip (401). A heat dissipation fin (403) is fixedly connected to the bottom of the main control chip (3). Heat dissipation holes (404) are provided on both the left and right sides of the outer wall of the detection box (1). A cooling fan (405) is fixedly connected to the inner wall of each of the two heat dissipation holes (404). A plurality of heating wires (406) are fixedly connected to the bottom of the fixing plate (2). A plurality of insulation plates (407) are fixedly connected to the inner wall of the detection box (1). A humidity adjustment component (408) is provided at the bottom of the inner wall of the detection box (1).

2. The food microbial detection and sampling device according to claim 1, characterized in that: The installation mechanism (6) includes a reinforcing block (601), the left side of which is fixedly connected to the right end of the sampling tube (5). A slot (602) is provided on the left side of the detection box (1). Two sliders (603) are fixedly connected to the right side of the reinforcing block (601). A limiting groove (604) is provided on the top left side of the detection box (1). A limiting block (605) is slidably connected to the inner wall of the limiting groove (604). A sealing ring (606) is fixedly connected to the left side of the detection box (1). A reinforcing component (607) is provided at the bottom of the limiting block (605).

3. The food microbial detection and sampling device according to claim 1, characterized in that: The fixing mechanism (8) includes multiple fixing rings (803), the inner walls of the multiple fixing rings (803) are fixedly connected to the top of the outer wall of the sample storage tube (7), and the top of the fixing plate (2) is provided with multiple placement grooves (802), the inner walls of the multiple placement grooves (802) are fixedly connected with limit rings (801).

4. The food microbial detection and sampling device according to claim 1, characterized in that: The anti-slip mechanism (9) includes a shock-absorbing pad (901), the top of which is fixedly connected to the bottom of the detection box (1), and a plurality of anti-slip strips (902) are fixedly connected to the bottom of the shock-absorbing pad (901).

5. The food microbial detection and sampling device according to claim 1, characterized in that: The humidity control component (408) includes a miniature hot air blower (4081), the bottom of which is fixedly connected to the bottom of the inner wall of the detection box (1), a miniature motor (4082) is fixedly connected to the bottom of the inner wall of the detection box (1), and an air guide plate (4083) is fixedly connected to the output end of the miniature motor (4082).

6. The food microbial detection and sampling device according to claim 2, characterized in that: The reinforcement component (607) includes a magnetic strip one (6071), the bottom of which is fixedly connected to the top of the limiting groove (604), and a magnetic strip two (6072) is fixedly connected to the inner wall of the limiting block (605).

7. The food microbial detection and sampling device according to claim 1, characterized in that: A filter screen (409) is fixedly connected to the inner wall of each of the two heat dissipation holes (404), and a reinforcing mesh (410) is fixedly connected to the inner wall of each of the two heat dissipation holes (404).

8. The food microbial detection and sampling device according to claim 1, characterized in that: A temperature detector (10) is fixedly connected to the rear inner wall of the detection box (1), a humidity detector (11) is fixedly connected to the rear inner wall of the detection box (1), and an adjustment panel (12) is fixedly connected to the top of the main control chip (3).

Images