A portable sampling device for rapid detection of food microorganisms

Abstract

This invention provides a portable sampling device for rapid detection of food microorganisms, relating to the field of food microbial sampling. It includes: a processing box with a feeding assembly on its upper side, comprising a feeding hopper and a rotating shaft inside the hopper. A pulverizing blade is connected to the outer wall of the rotating shaft. A conveying screw is located inside the processing box, with one end connected to a first motor. An outlet is located at the end of the conveying screw and at the bottom of the processing box. A filter box is located below the outlet, with a filter screen and filter cloth inside. A storage tank is connected to the outside of the filter box. A test tube rack is located on the upper side of the storage tank, and a food microbial detector is located on the outside of the storage tank. This invention integrates the pulverization, mixing, dilution, and filtration of solid food, further improving extraction efficiency, and the integrated device is easy to carry.

Description

Technical Field

[0001] This utility model relates to the field of food microbial sampling technology, specifically to a portable sampling device that facilitates rapid detection of food microorganisms. Background Technology

[0002] Food safety is of paramount importance. Because it concerns people's most basic right to life, microbial testing in food is a crucial and routine procedure. Generally, sampling for testing solid foods is relatively complex. After on-site sampling, on-site processing is required. A common processing method is to add purified water (sterile water, not drinking water), crush the food, filter it, collect the filtrate, draw it into a sample tube using a pipette, seal the sample tube, and send it to a testing institution under refrigeration to test for the presence of microorganisms or pathogens harmful to humans.

[0003] A search revealed existing technology (publication number: CN221479918U), which describes "a rapid microbial detection sample processing device, comprising a separation column and a vacuum sample tube. The separation column is sequentially equipped with a filter screen and a filter element from top to bottom, thereby dividing the column into a primary filtration chamber, a secondary filtration chamber, and a percolation chamber. The primary filtration chamber has an injection port with a sealed cap at its top, and the percolation chamber has an injection needle at its bottom. A sealing section extends from the bottom of the separation column, and the top of the vacuum sample tube is connected to the sealing section via a destructible or detachable sealing structure. This invention can rapidly process solid food samples, thereby accelerating the sampling efficiency during microbial detection, reducing contact time with the outside environment, and preventing infection from affecting the sample."

[0004] While existing rapid microbial detection sample processing devices have improved sampling efficiency, they still have some shortcomings: When sampling solid food, existing rapid microbial detection sample processing devices need to crush the food in advance, then mix and dilute it with pure water, and then filter and aspirate the filtrate, which still results in low efficiency. Furthermore, the solid crushing, mixing and dilution and filtration involved in the process require multiple independent devices to achieve the above processes, making them not portable enough. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, a portable sampling device for rapid detection of food microorganisms is provided to address the problems mentioned in the background.

[0006] To achieve the above objectives, a portable sampling device for rapid detection of food microorganisms is provided, comprising: a processing box, a feeding assembly on the upper side of the processing box, the feeding assembly including a feeding hopper, a rotating shaft inside the feeding hopper, and a pulverizing blade connected to the outer wall of the rotating shaft; a conveying screw inside the processing box, one end of the conveying screw connected to a first motor, and a discharge port at the end of the conveying screw and at the bottom of the processing box; a filter box below the discharge port, a filter screen and a filter cloth inside the filter box, and a storage tank connected to the outer side of the filter box; a test tube rack on the upper side of the storage tank, and a food microorganism detector on the outer side of the storage tank.

[0007] Furthermore, the inner wall of the processing box is provided with a heating plate, and the heating plate is electrically connected to a temperature controller installed on the outer wall of the processing box.

[0008] Furthermore, the lower end of the feed hopper is connected to a conveying cylinder, and the bottom of the conveying cylinder is provided with a support rod, and the bottom of the rotating shaft is connected to a bearing seat provided at the center of the support rod.

[0009] Furthermore, a gear set is connected to the upper end of the rotating shaft, and a second motor is connected to the outer end of the gear set, and a bracket is connected to the lower end of the second motor.

[0010] Furthermore, the discharge port is equipped with an electromagnetic valve, and the lower end of the discharge port is connected to a discharge pipe, the lower end of which is connected to the top of the filter box.

[0011] Furthermore, the filter box has a connecting hole near the bottom outer side, and the connecting hole is connected to the liquid storage tank.

[0012] Furthermore, the test tube rack has an insertion hole inside, and a liquid aspiration test tube is inserted into the insertion hole.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. In use, start the second motor, which drives the rotating shaft to rotate through the gear set, thereby driving the crushing blade to rotate. Then, the solid food is fed from the feed hopper into the processing box. The food is crushed by the crushing blade during the falling process. Then, pure water is added into the processing box through the feed hopper. Under the stirring and conveying of the first motor and the conveying screw, the sample solution enters the filter box through the discharge port through the conveying pipe. The sample solution is extracted by filtering through the filter screen and filter cloth. Then, the sample solution enters the storage tank through the connecting hole. At this time, it is only necessary to draw out the sample solution in the storage tank through the suction tube and put it into the food microbiology detector for testing, which improves the overall operation efficiency.

[0015] 2. By utilizing the processing box, feeding assembly, filter box, and storage tank, multiple existing devices are integrated into a single structure, facilitating continuous food crushing, mixing, filtering, and extraction. The integrated device is also portable and easy to use on-site, and is also convenient for extracting samples of liquid food. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front section structure of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the feeding assembly structure according to an embodiment of the present utility model.

[0018] Figure 3 This is a schematic diagram of the filter box and liquid storage tank according to an embodiment of the present utility model.

[0019] Figure 4 This is a schematic diagram of the test tube rack and liquid aspiration test tube structure according to an embodiment of the present invention.

[0020] In the diagram: 1. Processing box; 11. Heating plate; 12. Conveying screw; 13. First motor; 14. Discharge port; 15. Solenoid valve; 16. Feeding pipe; 2. Feeding assembly; 21. Feeding hopper; 22. Rotating shaft; 23. Gear set; 24. Second motor; 25. Support; 26. Feeding cylinder; 27. Crushing blade; 28. Support rod; 3. Filter box; 31. Filter screen; 32. Filter cloth; 33. Connecting hole; 4. Liquid storage tank; 41. Test tube rack; 42. Liquid suction test tube; 5. Food microbiology detector. Detailed Implementation

[0021] Reference Figures 1 to 4 As shown, this utility model provides a portable sampling device for rapid detection of food microorganisms, including: a processing box 1, a feeding assembly 2 on the upper side of the processing box 1, the feeding assembly 2 including a feeding hopper 21, and a rotating shaft 22 inside the feeding hopper 21, while a crushing blade 27 is connected to the outer wall of the rotating shaft 22; a conveying screw 12 inside the processing box 1, and a first motor 13 connected to one end of the conveying screw 12; and a discharge port 14 at the end of the conveying screw 12 and at the bottom of the processing box 1; a filter box 3 below the discharge port 14, and a filter screen 31 and a filter cloth 32 inside the filter box 3; and a liquid storage tank 4 connected to the outside of the filter box 3; a test tube rack 41 on the upper side of the liquid storage tank 4; and a food microorganism detector 5 on the outside of the liquid storage tank 4.

[0022] In this embodiment, the processing box 1, the feeding assembly 2, the filter box 3, and the storage tank 4 constitute the main structure of the portable sampling device for rapid detection of food microorganisms involved in this application.

[0023] Specifically, the first motor 13 is installed on the outer wall of the processing box 1, and the conveying screw 12 is configured as an extrusion screw structure.

[0024] Specifically, the bottom of the filter box 3 is designed with an inclined structure, and the filter screen 31 is located on the upper side of the filter cloth 32, and the filter cloth 32 is made of synthetic fiber material.

[0025] Specifically, the food microbiology detector 5 is used to detect whether unpacked solid or liquid food contains microorganisms, but it cannot perform microbial culture operations on the food.

[0026] It should be noted that the bottom of the processing box 1 is equipped with a U-shaped base, and the filter box 3, the liquid storage tank 4 and the food microbial detector 5 are all located on the base. The upper side of the filter box 3, the liquid storage tank 4 and the food microbial detector 5 and the bottom of the processing box 1 are provided with operating space, and the base and the processing box 1 are located in an integrated structure.

[0027] like Figure 1 and Figure 2 In the process, the inner wall of the processing box 1 is provided with a heating plate 11, and the heating plate 11 is electrically connected to a temperature controller installed on the outer wall of the processing box 1. The lower end of the feed hopper 21 is connected to a conveying cylinder 26, and the bottom of the conveying cylinder 26 is provided with a support rod 28. The bottom of the rotating shaft 22 is connected to a bearing seat provided at the center of the support rod 28. The upper end of the rotating shaft 22 is connected to a gear set 23, and the outer end of the gear set 23 is connected to a second motor 24. The lower end of the second motor 24 is connected to a bracket 25.

[0028] As a preferred implementation, the temperature of the heating plate 11 is controlled by a thermostat, thereby heating the mixed solution inside the processing tank 1 and enhancing the effect of mixing and diluting solid food with pure water.

[0029] It should be noted that liquid food can also be diluted with purified water before sample extraction.

[0030] Specifically, the gear set 23 includes a gear mounted on the outside of the rotating shaft 22 and a gear mounted on the output shaft end of the second motor 24, and the two gears mesh with each other.

[0031] Specifically, the bracket 25 is designed as an L-shaped structure, and the bottom of the bracket 25 is fixed to the upper end of the processing box 1. At the same time, the rotating shaft 22 rotates through the bracket 25 and cooperates with the bearing seat in the middle of the support rod 28.

[0032] like Figure 1 , Figure 3 and Figure 4In the middle, the discharge port 14 is equipped with an electromagnetic valve 15, and the lower end of the discharge port 14 is connected to a discharge pipe 16, and the lower end of the discharge pipe 16 is connected to the top of the filter box 3. The filter box 3 has a connecting hole 33 near the bottom outside, and the connecting hole 33 is connected to the liquid storage tank 4. The test tube rack 41 has an insertion hole, and a liquid suction test tube 42 is inserted into the insertion hole.

[0033] Specifically, when mixing and stirring inside the processing tank 1, the solenoid valve 15 can be kept closed, and then the solenoid valve 15 can be opened after the mixture is evenly mixed.

[0034] Specifically, multiple liquid aspiration test tubes 42 are inserted inside the test tube rack 41, and each liquid aspiration test tube 42 includes a test tube at the lower end and a hollow capsule connected to the head of the test tube. During operation, the air inside the hollow capsule is first squeezed out, and then the test tube is inserted into the liquid storage tank 4 and the hollow capsule is released to extract the solution.

[0035] In operation, the second motor is started, causing it to drive the rotating shaft via a gear set, which in turn drives the pulverizing blades. Solid food is then fed from the hopper into the processing chamber, where it is pulverized as it falls. Pure water is then added to the processing chamber through the hopper. Under the stirring and conveying action of the first motor and the conveying screw, the water flows from the outlet through the feed pipe into the filter chamber. The sample solution is extracted through a filter screen and filter cloth, and then passes through a connecting hole into the storage tank. The sample solution is then drawn out of the storage tank using a suction tube and placed on a food microbiology detector for testing, thus improving overall operational efficiency.

[0036] This utility model provides a portable sampling device for rapid detection of food microorganisms, which effectively solves the problems mentioned in the background technology. Based on the existing portable sampling device technology for rapid detection of food microorganisms, it integrates the crushing, mixing, dilution and filtration of solid food, further improving the extraction efficiency. Moreover, the integrated device is easy to carry.

Claims

1. A portable sampling device for rapid detection of microorganisms in food, comprising: The processing box (1) is characterized in that: a feeding assembly (2) is provided on the upper side of the processing box (1), and the feeding assembly (2) includes a feeding hopper (21), and a rotating shaft (22) is provided inside the feeding hopper (21), while a crushing blade (27) is connected to the outer wall of the rotating shaft (22), a conveying screw (12) is provided inside the processing box (1), and a first motor (13) is connected to one end of the conveying screw (12), and a discharge port (14) is provided at the end of the conveying screw (12) and at the bottom of the processing box (1), a filter box (3) is provided on the lower side of the discharge port (14), and a filter screen (31) and a filter cloth (32) are provided on the inner side of the filter box (3), and a liquid storage tank (4) is connected to the outer side of the filter box (3), a test tube rack (41) is provided on the upper side of the liquid storage tank (4), and a food microbial detector (5) is provided on the outer side of the liquid storage tank (4).

2. The portable sampling device for rapid detection of food microorganisms according to claim 1, characterized in that, The inner wall of the processing box (1) is provided with a heating plate (11), and the heating plate (11) is electrically connected to a temperature controller installed on the outer wall of the processing box (1).

3. The portable sampling device for rapid detection of food microorganisms according to claim 1, characterized in that, The lower end of the feed hopper (21) is connected to the conveying cylinder (26), and the bottom of the conveying cylinder (26) is provided with a support rod (28), and the bottom of the rotating shaft (22) is connected to the bearing seat provided at the center of the support rod (28).

4. The portable sampling device for rapid detection of food microorganisms according to claim 1, characterized in that, The upper end of the rotating shaft (22) is connected to a gear set (23), and the outer end of the gear set (23) is connected to a second motor (24), and the lower end of the second motor (24) is connected to a bracket (25).

5. A portable sampling device for rapid detection of food microorganisms according to claim 1, characterized in that, The discharge port (14) is equipped with an electromagnetic valve (15), and the lower end of the discharge port (14) is connected to a feed pipe (16), and the lower end of the feed pipe (16) is connected to the top of the filter box (3).

6. A portable sampling device for rapid detection of food microorganisms according to claim 1, characterized in that, The filter box (3) has a connecting hole (33) near the bottom outer side, and the connecting hole (33) is connected to the liquid storage tank (4).

7. A portable sampling device for rapid detection of food microorganisms according to claim 1, characterized in that, The test tube rack (41) has an insertion hole inside, and a liquid aspiration test tube (42) is inserted into the insertion hole.

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