Integrated food sample preparation and testing device

Abstract

This invention provides an integrated food sample preparation and testing device, including a base, a conveying assembly, a crushing assembly, a reagent adding assembly, and a testing assembly. The conveying assembly includes a conveyor belt, a fixing unit, and a crushing barrel. In use, the sample to be processed is placed in the crushing barrel. As the conveyor belt runs, it moves the crushing barrel past the crushing assembly, the reagent adding assembly, and the testing assembly. The conveyor belt is designed to be circular, allowing the sample to pass through the crushing assembly multiple times, undergoing crushing and agitation operations. The conveying assembly, crushing assembly, reagent adding assembly, and testing assembly work together to complete the sample preparation and testing operations for food testing. The conveying assembly facilitates the transfer of samples between multiple locations, including crushing, reagent adding, and testing. A first cleaning unit automatically cleans the crushing unit, and a second cleaning unit automatically cleans the sampling unit, resulting in a higher degree of automation and helping to reduce the labor intensity of operators.

Description

Technical Field

[0001] This invention belongs to the field of food safety testing technology, specifically relating to an integrated device for food sample preparation and testing. Background Technology

[0002] To ensure food safety, it is necessary to test the levels of heavy metals, pesticides, and other toxic and harmful substances in food to guarantee that consumers are purchasing safe food. Food testing can be conducted on-site by taking samples and then transporting them to a laboratory for testing, or by using portable food testing instruments for on-site testing.

[0003] Before testing samples, pretreatment is necessary. Different types of samples require different pretreatment methods. For example, liquid samples such as milk need to be diluted with distilled water to obtain a sample solution, while fruit and vegetable samples require multiple steps, including crushing, adding auxiliary reagents, stirring, and settling, before a sample solution can be obtained. The sample solution is then poured into the cuvette of the food testing instrument for analysis. Currently, pretreatment operations such as sample crushing, adding auxiliary reagents, stirring, and settling are mostly performed manually, resulting in low automation and high labor intensity for workers. Summary of the Invention

[0004] This invention provides an integrated food sample preparation and testing device, which aims to solve the problem that food safety testing pretreatment operations in the prior art rely heavily on manual labor and have a low degree of automation.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide an integrated food sample preparation and testing device, comprising:

[0006] A base having an upward-opening sewage tank;

[0007] The conveying assembly includes a conveyor belt arranged in a ring on the base, a plurality of fixing units disposed on the conveyor belt, and a plurality of crushing barrels. The plurality of fixing units are arranged at equal intervals along the conveying direction of the conveyor belt, and the crushing barrels are disposed one-to-one with the fixing units.

[0008] The crushing assembly includes a first turntable on the base, a first lifting rod on the first turntable, two crushing units, and a first cleaning unit on the base. The first lifting rod has a first lifting end arranged vertically. The two crushing units are respectively disposed on the first lifting end and distributed horizontally. The first turntable can drive the first lifting rod to rotate so that the two crushing units switch between a first state and a second state. In the first state, the crushing unit is in the crushing barrel. In the second state, the crushing unit is in the first cleaning unit.

[0009] The area above the conveyor belt and the area above the first cleaning unit alternately switch;

[0010] A reagent adding component is disposed on the base, and the outlet end of the reagent adding component is located above the conveyor belt; and

[0011] The detection assembly includes a detection unit disposed on the base, a second turntable disposed on the base, a second lifting rod disposed on the second turntable, a sampling unit, and a second cleaning unit disposed on the base. The second lifting rod has a second lifting end disposed vertically, and the sampling unit is disposed on the second lifting end. The second turntable can drive the second lifting rod to rotate so that the inlet end of the sampling unit moves above the conveyor belt and above the second cleaning unit, while the outlet end of the sampling unit moves above the detection unit and the sewage tank.

[0012] In one possible implementation, the crushing unit includes a blade holder vertically disposed at the first lifting end, a plurality of blades spaced circumferentially at the lower end of the blade holder, and a drive motor disposed at the first lifting end, wherein the rotation shaft of the drive motor is connected to the upper end of the blade holder.

[0013] In one possible implementation, the crushing unit further includes a splash-proof mechanism, which includes a splash-proof cover disposed at the first lifting end. The splash-proof cover has a vertically penetrating clearance hole, through which the blade handle passes.

[0014] In one possible implementation, the splash-proof mechanism further includes:

[0015] A guide rod is provided at the first lifting end along the vertical direction, and the splash cover is slidably fitted onto the guide rod; and

[0016] A spring is sleeved on the outer periphery of the guide rod, with the upper end of the spring abutting against the first lifting end and the lower end of the spring abutting against the splash cover.

[0017] In one possible implementation, there are multiple reagent adding components, which are equally spaced along the conveying direction of the conveyor belt, and the distance between two adjacent reagent adding components is equal to the distance between two adjacent fixed units.

[0018] In one possible implementation, the reagent addition component includes:

[0019] Reagent containers, used to store reagents; and

[0020] A first pumping unit, the inlet of which is located inside the reagent container, and the outlet of which is located above the delivery assembly.

[0021] In one possible implementation, the first cleaning unit includes:

[0022] A first cleaning cylinder, with an opening at the top and a first drainage channel at the bottom; and

[0023] Multiple water spray heads are arranged along the circumference of the first cleaning cylinder on the inner wall of the first cleaning cylinder.

[0024] In one possible implementation, the sampling unit includes:

[0025] The first tube is vertically downwardly positioned at the second lifting end;

[0026] A second pumping unit is located at the second lifting end, and the inlet end of the second pumping unit is connected to the first pipe body; and

[0027] The second pipe body is vertically downward at the second lifting end, and the inlet end of the second pipe body is connected to the outlet end of the second pumping unit.

[0028] The second turntable can drive the second lifting rod to rotate, so that the first tube moves above the conveyor belt and above the second cleaning unit, while the second tube moves above the detection unit and the sewage tank.

[0029] In one possible implementation, a filter screen is provided inside the first tube.

[0030] In one possible implementation, the second cleaning unit includes:

[0031] A second cleaning cylinder, with an opening at the top and a second drainage channel at the bottom; and

[0032] The drain pipe is located in the second cleaning cylinder.

[0033] Compared with the prior art, the beneficial effects of the integrated food sample preparation and testing device provided by the present invention are:

[0034] The integrated food sample preparation and testing device provided by this invention includes a base, a conveying assembly, a crushing assembly, a reagent adding assembly, and a testing assembly. The conveying assembly includes a conveyor belt, a fixing unit, and a crushing barrel. In use, the sample to be processed (such as vegetable pieces) is placed into the crushing barrel. As the conveyor belt runs, it moves the crushing barrel past the crushing assembly, the reagent adding assembly, and the testing assembly. The conveyor belt is designed to be circular, allowing the sample to pass over the crushing assembly multiple times. The first time the sample passes under the crushing assembly, the crushing unit extends downwards into the crushing barrel to crush the sample. The sample then continues to move with the conveyor belt to the reagent adding assembly, where distilled water, propanol, extraction solution, or other reagents can be added to the crushing barrel as needed. After reagent addition, the sample passes under the crushing assembly again, and the crushing assembly extends downwards into the crushing barrel to stir the sample and reagents, ensuring thorough mixing. Finally, the sample moves with the conveyor belt to the sampling unit, which collects the sample from the crushing barrel and transports it to the testing unit for detection, thus completing the sample preparation and testing operations for food testing.

[0035] In this invention, the conveying component, crushing component, reagent adding component, and detection component work together to complete the sample preparation and detection operations for food testing. The conveying component enables the transfer of samples between multiple locations such as crushing, reagent adding, and detection. The first cleaning unit can automatically clean the crushing unit, and the second cleaning unit can automatically clean the sampling unit, resulting in a higher degree of automation and helping to reduce the labor intensity of operators.

[0036] The present invention designs the conveyor belt as a ring, allowing the sample to pass under the crushing component multiple times, so that the crushing component can perform both crushing and mixing functions, eliminating the need for an additional mixing mechanism, which helps to reduce the number of parts and make the overall layout more compact. Attached Figure Description

[0037] Figure 1 A schematic diagram of the integrated food sample preparation and testing device provided in one embodiment of the present invention. Figure 1 ;

[0038] Figure 2 A schematic diagram of the integrated food sample preparation and testing device provided in one embodiment of the present invention. Figure 2 ;

[0039] Figure 3 This is a schematic diagram of the structure of the first lifting rod and the crushing unit in one embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the structure of the first cleaning unit in one embodiment of the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Integrated food sample preparation and testing device;

[0043] 10. Base; 11. Sewage tank;

[0044] 20. Conveying assembly; 21. Conveyor belt; 22. Fixing unit; 23. Crushing barrel;

[0045] 30. Crushing assembly; 31. First lifting rod; 32. Crushing unit; 321. Knife handle; 322. Blade; 323. Drive motor; 324. Splash cover; 325. Clearance hole; 326. Guide rod; 327. Spring; 33. First cleaning unit; 331. First cleaning cylinder; 332. Water spray head; 333. First drainage channel;

[0046] 40. Reagent addition components;

[0047] 50. Detection component; 51. Detection unit; 52. Second lifting rod; 53. Sampling unit; 531. First tube; 532. Second pumping unit; 533. Second tube; 54. Second cleaning unit. Detailed Implementation

[0048] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0049] It should be noted that when an element is referred to as "fixed to," "fixed," or "attached" to another element, it can be directly on the other element or may have an intervening element. When an element is referred to as "connected to" or "connected to" another element, it can be directly connected to the other element or may have an intervening element. When an element is referred to as "set on" or "located on" another element, it can be directly on the other element or may have an intervening element. "Multiple" refers to two or more items. "At least one" refers to one or more items. "Several" refers to one or more items.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0051] Please refer to the following: Figures 1 to 4 The integrated food sample preparation and testing device 1 provided in the embodiments of the present invention will be described below.

[0052] Please see Figure 1 and Figure 2This invention provides an integrated food sample preparation and testing device 1, including a base 10, a conveying assembly 20, a crushing assembly 30, a reagent adding assembly 40, and a testing assembly 50. The base 10 has an upward-facing drainage tank 11; the conveying assembly 20 includes a conveyor belt 21 arranged in a ring on the base 10, multiple fixing units 22 disposed on the conveyor belt 21, and multiple crushing barrels 23. The multiple fixing units 22 are equally spaced along the conveying direction of the conveyor belt 21, and the crushing barrels 23 are correspondingly disposed on the fixing units 22; the crushing assembly 30 includes a first turntable disposed on the base 10, a first lifting rod 31 disposed on the first turntable, two crushing units 32, and a first cleaning unit 33 disposed on the base 10. The first lifting rod 31 has… The first lifting end is set vertically, and two crushing units 32 are respectively set on the first lifting end and distributed horizontally. The first turntable can drive the first lifting rod 31 to rotate so that the two crushing units 32 alternately switch above the conveyor belt 21 and above the first cleaning unit 33. The two crushing units 32 switch between a first state and a second state. In the first state, the crushing unit 32 is in the crushing barrel 23 and can crush or stir the sample when rotating. In the second state, the crushing unit 32 is in the first cleaning unit 33 for self-cleaning.

[0053] The reagent addition assembly 40 is located on the base 10, and the outlet end of the reagent addition assembly 40 is located above the conveyor belt 21. The detection assembly 50 includes a detection unit 51 located on the base 10, a second turntable located on the base 10, a second lifting rod 52 located on the second turntable, a sampling unit 53, and a second cleaning unit 54 located on the base 10. The second lifting rod 52 has a second lifting end arranged vertically, and the sampling unit 53 is located on the second lifting end. The second turntable can drive the second lifting rod 52 to rotate so that the inlet end of the sampling unit 53 moves above the conveyor belt 21 and above the second cleaning unit 54, while the outlet end of the sampling unit 53 moves above the detection unit 51 and the sewage tank 11.

[0054] Compared with the prior art, the beneficial effects of the integrated food sample preparation and testing device 1 provided in this embodiment of the invention are:

[0055] The integrated food sample preparation and testing device 1 provided in this embodiment of the invention includes a base 10, a conveying component 20, a crushing component 30, a reagent adding component 40, and a testing component 50. The conveying component 20 includes a conveyor belt 21, a fixing unit 22, and a crushing barrel 23. In use, the sample to be processed (such as vegetable pieces) is placed into the crushing barrel 23. When the conveyor belt 21 runs, it can move the crushing barrel 23 past the crushing component 30, the reagent adding component 40, and the testing component 50. The conveyor belt 21 is designed to be circular, so that the sample can pass under the crushing component 30 multiple times on the conveyor belt 21. When the sample passes under the crushing component 30 for the first time, the crushing unit 32 extends downward into the crushing barrel 23 to crush the sample. Then the sample continues to move with the conveyor belt 21 to the area under the reagent adding component 40. The reagent adding component 40 can add reagents such as distilled water, propanol, and extraction solution into the crushing barrel 23 as needed. After the reagents are added, the sample passes under the crushing component 30 again. The crushing component 30 extends downward into the crushing barrel 23 to stir the sample and reagents, making them fully mixed. Finally, the sample moves along the conveyor belt 21 to the bottom of the sampling unit 53. The sampling unit 53 collects the sample from the crushing barrel 23 and transports it to the testing unit 51 for testing, thus completing the sample preparation and testing operations for food testing.

[0056] In this embodiment of the invention, the conveying component 20, the crushing component 30, the reagent adding component 40, and the detection component 50 work together to complete the sample preparation and detection operations for food testing. The conveying component 20 enables the transfer of samples between multiple locations such as crushing, reagent adding, and detection. The first cleaning unit 33 can automatically clean the crushing unit 32, and the second cleaning unit 54 can automatically clean the sampling unit 53. The degree of automation is higher, which helps to reduce the labor intensity of operators.

[0057] In this embodiment of the invention, the conveyor belt 21 is designed as a ring, allowing the sample to pass under the crushing component 30 multiple times. This enables the crushing component 30 to perform both crushing and mixing functions, eliminating the need for an additional mixing mechanism. This helps reduce the number of parts and makes the overall layout more compact.

[0058] In this embodiment of the invention, the base 10 is used to support the various components installed on it. To facilitate movement, universal casters can be provided under the base 10.

[0059] The conveying assembly 20 includes a conveyor belt 21, fixing units 22, and a crushing barrel 23. The conveyor belt 21 is disposed on the upper surface of the base 10 and can be a belt conveyor or a chain conveyor. Multiple fixing units 22 are equally spaced on the conveyor belt 21. The crushing barrel 23 is detachably mounted on the fixing unit 22, which can fix the crushing barrel 23 by magnetic attraction, mechanical clamping, vacuum adsorption, or other methods. After the inspection is completed, the crushing barrel 23 is removed and rinsed clean.

[0060] The conveyor belt 21 is equipped with multiple fixed units 22, and each fixed unit 22 is equipped with a crushing barrel 23, which can simultaneously prepare and test multiple samples.

[0061] The crushing assembly 30 includes a first turntable, a first lifting rod 31, a crushing unit 32, and a first cleaning unit 33. The first turntable is mounted on the base 10 and located on one of the conveyor belts 21. The first turntable can be driven by a motor or a hydraulic rotary motor. The first lifting rod 31 is mounted on the first turntable. The first lifting rod 31 can be an electric lifting rod, a pneumatic lifting rod, a hydraulic lifting rod, etc., which can drive the crushing assembly 30 to rise and fall.

[0062] The crushing unit 32 is installed on the first lifting end and can be vertically lifted and lowered under the drive of the first lifting end. After the crushing unit 32 extends downward into the crushing barrel 23, it can crush and stir the sample inside the crushing barrel 23. After the crushing unit 32 extends upward into the crushing barrel 23, the first turntable drives the first lifting rod 31 to rotate, moving the crushing unit 32 from above the conveyor belt 21 to above the first cleaning unit 33. Then the first lifting rod 31 descends, and the crushing unit 32 enters the first cleaning unit 33 for cleaning, avoiding contamination of the next sample by residual sample. By setting two crushing units 32, and the two crushing units 32 can alternately switch positions under the drive of the first turntable, when one crushing unit 32 is used for sample crushing or stirring, the other crushing unit 32 enters the first cleaning unit 33 for cleaning. This can shorten the cleaning waiting time and help improve sample processing efficiency.

[0063] The reagent adding component 40 is located on one side of the conveyor belt 21. When the crushing barrel 23 reaches below the reagent adding component 40 along with the conveyor belt 21, the reagent adding component 40 can add an appropriate amount of liquid reagent into the crushing barrel 23, such as purified water, ethanol, propanol, etc. There are no restrictions on the type of reagent; users can set it according to their actual testing needs.

[0064] The detection assembly 50 includes a detection unit 51, a second turntable, a second lifting rod 52, a sampling unit 53, and a second cleaning unit 54. The detection unit 51 can detect the content of heavy metals, pesticides, proteins, etc., in food. The detection unit 51 includes a cuvette located within the detection channel. The cuvette receives the sample taken by the sampling unit 53. The working principle of the detection unit 51 is as follows: different wavelengths (colors) of light can be used to detect different items in food. For example, violet light with a wavelength of 410nm can be used to detect pesticide residues in food, and red light with a wavelength of 630nm can be used to detect the content of sodium saccharin in food. After the light emitted by the light-emitting element passes through the sample in the cuvette, the feedback signal is compared with pre-stored data to complete the detection of the corresponding substances in the food. In this embodiment of the invention, the detection unit 51 can be a commercially available food safety testing instrument; the specific structure and working principle of the detection unit 51 will not be described in detail. It should be noted that the cuvette needs to be replaced after use. This can be done manually or automatically by a robotic arm.

[0065] The second turntable drives the second lifting rod 52 to rotate, causing the sampling unit 53 to move between the second cleaning unit 54 and the conveyor belt 21. The second turntable can be driven by a motor or hydraulic motor. When the sampling unit 53 is above the conveyor belt 21, the second lifting rod 52 descends, allowing the sampling unit 53 to extend downwards into the crushing barrel 23 to extract the sample. The extracted sample falls from the outlet end into the detection unit 51 below for testing. When the sampling unit 53 is below the second cleaning unit 54, the second lifting rod 52 descends, allowing the sampling unit 53 to extend downwards into the second cleaning unit 54 for cleaning. The second lifting rod 52 can be pneumatically, electrically, or hydraulically driven.

[0066] Please see Figure 1 , Figure 2 and Figure 3 In some possible embodiments, the crushing unit 32 includes a knife handle 321 vertically disposed at the first lifting end, a plurality of blades 322 spaced circumferentially at the lower end of the knife handle 321, and a drive motor 323 disposed at the first lifting end, the rotation shaft of the drive motor 323 being connected to the upper end of the knife handle 321.

[0067] In this embodiment, the crushing unit 32 includes a handle 321, blades 322, and a drive motor 323. The handle 321 is vertically oriented downwards, and multiple blades 322 are mounted around the lower end of the handle 321. The drive motor 323 drives the handle 321 and blades 322 to rotate, thereby crushing the sample. The crushing unit 32 can be used for sample crushing and also for stirring the sample and reagents after the addition of auxiliary reagents. The shape of the blades 322 is not limited, as long as they can crush fruit and vegetable samples.

[0068] It should be noted that when the sample being tested is milk or other samples that do not require crushing, the crushing component 30 does not need to operate.

[0069] As the crushing assembly 30 rotates, it extends downwards into the crushing barrel 23. When the crushing assembly 30 comes into contact with the sample at the top, the sample may fly out from the top of the crushing barrel 23. To resolve this issue, please refer to [link to relevant documentation]. Figure 1 , Figure 2 and Figure 3 In some possible embodiments, the crushing unit 32 further includes a splash-proof mechanism, which includes a splash-proof cover 324 disposed at the first lifting end. The splash-proof cover 324 has a vertically penetrating clearance hole 325, and the knife handle 321 passes through the clearance hole 325.

[0070] In this embodiment, a splash guard 324 is provided above the blade 322. When the crushing component 30 extends downward into the crushing barrel 23, the splash guard 324 covers the opening of the crushing barrel 23, which can prevent sample splashing to a certain extent.

[0071] Please see Figure 1 , Figure 2 and Figure 3 In some possible embodiments, the splash-proof mechanism further includes a guide rod 326 and a spring 327. The guide rod 326 is disposed at the first lifting end in the vertical direction, and the splash cover 324 is slidably fitted on the guide rod 326; the spring 327 is sleeved on the outer periphery of the guide rod 326, with the upper end of the spring 327 abutting against the first lifting end and the lower end of the spring 327 abutting against the splash cover 324.

[0072] In this embodiment, the splash guard 324 is slidably fitted to the guide rod 326, and the spring 327 is configured with a preload to move the splash guard 324 downward. By designing the splash guard 324 as slidable, during the downward movement of the crushing unit 32, the splash guard 324 can contact the upper end of the crushing barrel 23 before the blade 322 contacts the sample, thus completely preventing the sample from splashing out of the crushing barrel 23 during crushing.

[0073] Please see Figure 1 and Figure 2 In some possible embodiments, multiple reagent adding components 40 are provided, and the multiple reagent adding components 40 are arranged at equal intervals along the conveying direction of the conveyor belt 21. The distance between two adjacent reagent adding components 40 is the same as the distance between two fixed units 22. The reagent adding components 40 can add different reagents, such as pure water and ether, into the crushing barrel 23 respectively.

[0074] In some possible embodiments, the reagent adding component 40 includes a reagent container and a first pumping unit. The reagent container is used to store reagents; the inlet end of the first pumping unit is located inside the reagent container, and the outlet end of the first pumping unit is located above the delivery component 20. In this embodiment, the reagent container is used to store the auxiliary reagents to be added, and the first pumping unit can pump the reagents in the reagent container into the crushing tank 23.

[0075] Please see Figure 4 In some possible embodiments, the first cleaning unit 33 includes a first cleaning cylinder 331 and a plurality of spray nozzles 332. The top of the first cleaning cylinder 331 is open, and a first drainage channel 333 is provided at the bottom of the first cleaning cylinder 331. The plurality of spray nozzles 332 are arranged on the inner wall of the first cleaning cylinder 331 along the circumference of the first cleaning cylinder 331.

[0076] In this embodiment, the first cleaning unit 33 includes a first cleaning cylinder 331 and multiple water spray heads 332. The water spray heads 332 are connected to water pipes, and the flow of water through the pipes is controlled by a solenoid valve. When cleaning is required, the crushing unit 32 enters the first cleaning cylinder 331 from top to bottom, and the water spray heads 332 spray water to rinse and clean the crushing unit 32. The water generated during cleaning is discharged from the first drainage channel 333 at the bottom.

[0077] Please see Figure 1 and Figure 2 In some possible embodiments, the sampling unit 53 includes a first tube 531, a second pumping unit 532, and a second tube 533. The first tube 531 is vertically downward at the second lifting end; the second pumping unit 532 is located at the second lifting end, and its inlet end is connected to the first tube 531; the second tube 533 is vertically downward at the second lifting end, and its inlet end is connected to the outlet end of the second pumping unit 532; the second turntable can drive the second lifting rod 52 to rotate, so that the first tube 531 moves above the conveyor belt 21 and the second cleaning unit 54, while the second tube 533 moves above the detection unit 51 and the sewage tank 11.

[0078] In this embodiment, the sampling unit 53 includes a first tube 531, a second pumping unit 532, and a second tube 533. During sampling, the first tube 531 extends downward into the crushing barrel 23, the second pumping unit 532 is activated, and the sample passes through the first tube 531, the first pumping unit, and the second tube 533 before finally entering the cuvette of the detection unit 51.

[0079] When cleaning is required, water is stored in the second cleaning unit 54, the first pipe 531 extends downward into the second cleaning unit 54, the second pumping unit 532 is started, the water passes through the first pipe 531, the first pumping unit and the second pipe 533, and is finally discharged from the sewage tank 11, completing the rinsing and cleaning of the inside of the sampling unit 53.

[0080] In some possible embodiments, a filter screen is provided inside the first tube 531 to prevent large samples that are not fully broken from clogging the internal pipes of the sampling unit 53.

[0081] In some possible embodiments, the second cleaning unit 54 includes a second cleaning cylinder and a drain pipe. The top of the second cleaning cylinder is open, and a second drainage channel is provided at the bottom of the second cleaning cylinder; the drain pipe is located in the second cleaning cylinder.

[0082] In this embodiment, the second cleaning unit 54 includes a second cleaning cylinder and a water drain pipe. The water drain pipe is used to drain water into the second cleaning cylinder, and the sampling unit 53 can draw water from the second cleaning cylinder to flush its internal pipes. After flushing, the remaining water in the second cleaning cylinder is discharged from the second drain channel.

[0083] It is understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be repeated here. After this description, it can be considered that the present invention specification has recorded each combined embodiment and can support different combined embodiments.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A food sample preparation and detection integrated device, characterized by, The utility model relates to a sample processing device, comprising: a base with an upwardly open sewage pool; a conveying assembly including a conveying belt arranged annularly on the base, a plurality of fixed units arranged on the conveying belt, and a plurality of crushing barrels, the plurality of fixed units being arranged equidistantly along the conveying direction of the conveying belt, and the crushing barrels being arranged correspondingly in the fixed units; a crushing assembly including a first rotating table arranged on the base, a first lifting rod arranged on the first rotating table, two crushing units, and a first cleaning unit arranged on the base, the first lifting rod having a first lifting end arranged vertically, the two crushing units being arranged respectively on the first lifting end and distributed horizontally, and the first rotating table being capable of driving the first lifting rod to rotate so as to switch the two crushing units between a first state and a second state, in the first state, the crushing units are in the crushing barrels, and in the second state, the crushing units are in the first cleaning unit; a reagent adding assembly arranged on the base, an outlet end of the reagent adding assembly being located above the conveying belt, the reagent adding assembly including a reagent container for storing reagents and a first pumping unit, an inlet end of the first pumping unit being arranged in the reagent container, and an outlet end of the first pumping unit being located above the conveying assembly, the first pumping unit being capable of pumping the reagents in the reagent container into the crushing barrels; and a detection assembly including a detection unit arranged on the base, a second rotating table arranged on the base, a second lifting rod arranged on the second rotating table, a sampling unit, and a second cleaning unit arranged on the base, the second lifting rod having a second lifting end arranged vertically, the sampling unit being arranged on the second lifting end, and the second rotating table being capable of driving the second lifting rod to rotate so as to move an inlet end of the sampling unit above the conveying belt and above the second cleaning unit, and simultaneously move an outlet end of the sampling unit above the detection unit and the sewage pool; the conveying belt is designed as an annular shape, sample passes under the crushing assembly for the first time, the crushing units extend downward into the crushing barrels to crush the sample, the sample moves to the reagent adding assembly under the conveying belt, the reagent adding assembly adds reagents into the crushing barrels, after the reagent adding is completed, the sample passes under the crushing assembly again, the crushing assembly extends downward into the crushing barrels to stir the sample and the reagents, and the sample moves to the sampling unit under the conveying belt, the sampling unit collects the sample in the crushing barrels and conveys the sample to the detection unit for detection.

2. The food sample preparation and detection integrated device according to claim 1, wherein, the crushing unit includes a blade handle arranged vertically on the first lifting end, a plurality of blades arranged at the lower end of the blade handle at intervals in the circumferential direction of the blade handle, and a driving motor arranged on the first lifting end, a rotating shaft of the driving motor being in transmission connection with the upper end of the blade handle.

3. The food sample preparation and detection integrated device according to claim 2, wherein, The crushing unit further comprises a splash-proof mechanism, the splash-proof mechanism comprising a splash-proof cover arranged on the first lifting end, the splash-proof cover being provided with an escape hole penetrating from top to bottom, and the knife handle penetrating the escape hole.

4. The food sample preparation and detection integrated device according to claim 3, wherein, The splash-proof mechanism further comprises: a guide rod arranged on the first lifting end in the up-down direction, the splash-proof cover being slidingly fitted on the guide rod; and a spring sleeved on the outer periphery of the guide rod, the upper end of the spring abutting against the first lifting end, and the lower end of the spring abutting against the splash-proof cover.

5. The food sample preparation and detection integrated device of claim 1, wherein The reagent adding assembly is provided with a plurality of reagent adding assemblies, the plurality of reagent adding assemblies being arranged at equal intervals along the conveying direction of the conveying belt, and the interval between two adjacent reagent adding assemblies being equal to the interval between two adjacent fixed units.

6. The food sample preparation and detection integrated device of claim 1, wherein, The first cleaning unit comprises: a first cleaning cylinder, the first cleaning cylinder being open at the top, and the bottom of the first cleaning cylinder being provided with a first water drainage passage; and a plurality of water spray heads arranged on the inner wall of the first cleaning cylinder in the circumferential direction of the first cleaning cylinder.

7. The food sample preparation and detection integrated device of claim 1, wherein The sampling unit comprises: a first pipe body arranged vertically downward on the second lifting end; a second pumping unit arranged on the second lifting end, the inlet end of the second pumping unit being connected with the first pipe body; and a second pipe body arranged vertically downward on the second lifting end, the inlet end of the second pipe body being connected with the outlet end of the second pumping unit. The second turntable can drive the second lifting rod to rotate, so as to move the first pipe body above the conveying belt and above the second cleaning unit, and simultaneously move the second pipe body above the detection unit and the sewage pool.

8. The food sample preparation and detection integrated device according to claim 7, wherein, The first pipe body is provided with a filter screen.

9. The food sample preparation and detection integrated device of claim 1, wherein, The second cleaning unit comprises: a second cleaning cylinder, the second cleaning cylinder being open at the top, and the bottom of the second cleaning cylinder being provided with a second water drainage passage; and a water drainage pipe arranged on the second cleaning cylinder.

Images