Liquid detection equipment

Abstract

The utility model discloses liquid detection equipment which comprises a box body, a sample container transfer device and a detection device, the sample container transfer device comprises a sampling table, a moving plate, an elastic element, a positioning mechanism and a first driving mechanism; the sampling table is provided with a hollow groove, and the hollow groove has a first state in the box body and a second state outside the box body; one end of the movable plate extends to the lower part of the hollow groove and has two states of closing and opening the bottom of the hollow groove; one end of the elastic element is fixedly connected with the movable plate, and the other end is fixedly connected with the sampling table; the positioning mechanism is used for positioning the sliding direction of the sampling table; the first driving mechanism is used for driving the moving plate to drive the sampling table to move in the sliding direction, so that the hollowed-out groove is switched between two states, and meanwhile, the moving plate is switched between the two states; the detection device is used for detecting the sample in the sample container. The liquid detection equipment disclosed by the utility model has the advantages of high automation degree, simple structure, low manufacturing cost, simplicity in later maintenance, safety and reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of food safety detection, in particular to a liquid detection device. Background Art

[0002] Liquid testing plays a pivotal role in the field of food safety. It is a key link in the quality control and safety assessment of liquid foods, beverages, and soaking and extracting liquids involved in the food production process. As people's attention to food safety continues to increase, the importance of liquid testing is becoming increasingly prominent.

[0003] Liquid food is an indispensable part of people's daily life, such as milk, juice, drinking water, etc. However, these liquid foods may be attacked by various contaminants during production, processing, storage and transportation, such as microorganisms, heavy metals, pesticide residues, etc. These contaminants not only affect the quality and taste of food, but may also pose a serious threat to consumers' health. Therefore, the purpose of liquid testing is to identify the ingredients, contaminants, additives and possible microbial contamination in these liquids to ensure product safety and compliance.

[0004] Liquid testing can timely detect and control harmful substances in food through comprehensive analysis of liquid food, thereby protecting the health of consumers. At the same time, liquid testing also provides an important quality control method for food production companies. By testing the soaking liquid, extraction liquid, etc. in the production process, companies can promptly detect problems in the production process, adjust the production process in time, and ensure the quality and safety of products.

[0005] There are some technical defects in the food safety testing equipment in the prior art:

[0006] (1) In the field of food safety testing, the degree of automation is relatively low, and manual operation still occupies an important link. Especially in the sample pre-processing stage, staff must handle the samples by hand, performing steps such as grinding, dilution, and filtration to ensure that the samples meet the injection standards of the testing equipment. These manual operations not only consume a lot of time and manpower, but are also easily affected by a variety of human factors, such as the operator's skill proficiency, fatigue, and concentration. Even experienced operators cannot avoid occasional mistakes during high-intensity and long-term work. These mistakes, even if small, may have a significant impact on the accuracy of the final test results.

[0007] (2) The structural complexity of existing food safety testing equipment is also an issue that cannot be ignored. In order to meet the multifaceted needs of food safety testing, these devices usually contain multiple components and systems, each of which has its own unique functions and roles. However, this complexity not only increases the manufacturing cost of the equipment because more parts and more sophisticated manufacturing processes are required, but more importantly, it also increases the failure rate of the equipment. Summary of the invention

[0008] The technical problem to be solved by the utility model is to provide a liquid detection device with high automation, simple structure, low manufacturing cost, simple later maintenance, safety and reliability.

[0009] In order to solve the above technical problems, the utility model provides a technical solution, a liquid detection device, at least comprising:

[0010] A box body, wherein a fixing plate is arranged inside the box body and a sampling window is arranged on the side wall;

[0011] A sample container transfer device, the sample container transfer device comprising:

[0012] A sampling platform, the sampling platform is slidably connected to the fixed plate, the sampling platform is provided with a hollow groove adapted to the sample container, the sampling platform has a first state in which the hollow groove is located inside the box and a second state in which the hollow groove is located outside the box by passing through the sampling window along the sliding direction;

[0013] A movable plate, wherein the movable plate is slidably connected to the fixed plate along the sliding direction of the sampling platform, and one end of the movable plate extends to the bottom of the hollow groove and has a closed state of closing the bottom of the hollow groove and an open state of opening the bottom of the hollow groove;

[0014] An elastic element, one end of which is fixedly connected to the movable plate, and the other end of which is fixedly connected to the sampling platform;

[0015] A positioning mechanism, the positioning mechanism is used for positioning the sampling platform in a sliding direction;

[0016] A first driving mechanism, wherein the first driving mechanism is used for:

[0017] When the sampling platform is in the first state under the action of the positioning mechanism, the movable plate is driven to slide relative to the fixed plate to switch between the closed state and the open state;

[0018] And, when the movable plate is in a closed state, the movable plate is driven to slide relative to the fixed plate and the sampling platform is driven to slide under the action of the elastic element to switch between the first state and the second state;

[0019] A detection device is installed above the sample container transfer device and matches the position of the hollow groove in the first state for detecting the sample in the sample container.

[0020] In a preferred embodiment, a vibration device matching the position of the hollow groove in the first state is disposed at one end of the movable plate for mixing the sample and the reagent in the sample container.

[0021] In a preferred embodiment, three position sensors corresponding to the sampling platform and the movable plate are arranged on the fixed plate at intervals along the sliding direction of the movable plate, for detecting and identifying the position status of the sampling platform and the movable plate.

[0022] In a preferred embodiment, a baffle is provided at one end of the sampling platform, and the sampling window is recessed inwardly at a position corresponding to the baffle to form a groove, and the groove and the baffle are adapted to form the positioning mechanism for positioning the sampling platform in the sliding direction.

[0023] In a preferred embodiment, a slide groove is provided at the bottom of the other end of the sampling table, which is recessed inward and extends along the sliding direction of the movable plate. The movable plate includes a sliding portion adapted to be connected to the slide groove. The sliding portion extends outward away from the two side walls of one end of the sampling table to form a connecting portion. A guide rail-slider structure is adapted to be connected between the connecting portion and the fixed plate.

[0024] In a preferred embodiment, both sides of the top of the sampling platform are recessed downward to form symmetrically arranged mounting parts, a guide rail-slider structure 2 is adaptably connected between the mounting part and the fixed plate, the mounting part is provided with a pin for fixed connection with one end of the elastic element, and the connecting part is provided with a pin for fixed connection with the other end of the elastic element.

[0025] A preferred embodiment further comprises a material supply unit, wherein the box body is provided with a sample container cavity adapted to the output end of the material supply unit, and the material supply unit comprises:

[0026] A material barrel, wherein the material barrel is provided with an internal cavity which is through-through from top to bottom and is used for loading sample containers stacked in sequence;

[0027] A material taking hand, wherein the free end of the material taking hand is adapted to the outlet of the material barrel and is used to control the sample containers loaded in the cavity to fall into the sample container cavity in sequence;

[0028] The second driving mechanism is used to drive the material picking arm to move.

[0029] In a preferred embodiment, a gap groove is formed on the side wall of the material barrel, and the material picking hand includes a receiving portion located below the outlet of the material barrel and a fixing portion extending outward from the upper end surface of the receiving portion and arranged parallel to the receiving portion, the receiving portion is provided with a slot hole matching the outlet of the material barrel, and the free end of the fixing portion is provided with a claw matching the gap groove.

[0030] In a preferred embodiment, the material taking hand has a third state and a fourth state;

[0031] In the third state, the claw is located outside the gap groove and the slot hole is misaligned with the outlet of the material barrel, so that the lowest sample container in the cavity falls into the receiving portion;

[0032] In the fourth state, the claw passes through the gap groove and is inserted between the lowest sample container and the adjacent high sample container to fix the adjacent high sample container, and the slot hole is coaxial with the outlet of the material barrel so that the lowest sample container passes through the slot hole and falls into the sample container cavity;

[0033] The second driving mechanism drives the receiving part and the fixing part of the material grabbing arm to move synchronously to switch between the third state and the fourth state.

[0034] In a preferred embodiment, a sensor is disposed on the receiving portion for detecting a sample container dropped on the receiving portion.

[0035] A preferred embodiment further comprises a reagent adding device, wherein the reagent adding device comprises a chemical reagent adding unit and a solvent adding unit, and the output ends of the chemical reagent adding unit and the solvent adding unit are adapted to the notch of the hollow groove in the first state.

[0036] In a preferred embodiment, the chemical reagent adding unit includes a plurality of reagent chambers for loading chemical reagents, a temperature control unit for controlling the temperature of the reagent chambers, and a metering pump connected one-to-one with the reagent chambers, and the reagent chamber adds chemical reagents to the sample container in the hollow groove in the first state through the metering pump.

[0037] In a preferred embodiment, the solvent adding unit includes a solvent tank for loading solvent and a metering pump 2 connected to the solvent tank, the solvent tank adds solvent to the sample container in the hollow groove in the first state through the metering pump 2, and a sensor 2 is provided at the bottom of the solvent tank for detecting the amount of solvent in the solvent tank.

[0038] A preferred embodiment further comprises a waste bin, which is installed in the box body and matches the position of the hollow slot in the first state.

[0039] In a preferred embodiment, the side wall of the box is provided with a controller electrically connected to the first driving mechanism and the position sensor, and the controller is used to control the operation of the first driving mechanism based on the position data obtained by the position sensor, thereby driving the movable plate to slide relative to the fixed plate and driving the sampling table to slide from the first state to the second state under the action of the elastic element.

[0040] Compared with the prior art, the liquid detection device of the utility model has the following beneficial effects:

[0041] (1) The utility model relates to the field of liquid detection, and in particular introduces a new type of liquid detection equipment. The equipment comprises a box, a sample container transfer device and a detection device. The sample container transfer device is composed of a sampling platform, a moving plate, an elastic element, a positioning mechanism and a first driving mechanism. The sampling platform is provided with a hollow groove adapted to the sample container, the hollow groove has a first state located inside the box and a second state located outside the box through the sampling window along the sliding direction, and one end of the moving plate extends to the bottom of the hollow groove, and the two states of closed and open hollow groove bottom can be freely switched. When the hollow groove is in the second state and the moving plate closes the bottom of the hollow groove, it is used for placing the sample container; when the hollow groove is in the first state and the moving plate closes the bottom of the hollow groove, it is used for mixing and detecting the sample and reagent in the sample container; when the hollow groove is in the second state and the moving plate opens the bottom of the hollow groove, it is used for detecting the drop of the sample container. In addition, the detection device is installed above the sample container transfer device and matches the position of the hollow groove to ensure that the sample in the sample container can be accurately detected. Such a design not only realizes the automation of the transportation, mixing and detection of the samples to be tested, as well as the automation of the dropping of the sample container after the detection, but also makes the entire detection process efficient and accurate, greatly improves the detection efficiency, and reduces the possibility of human error and intervention. In particular, the movable plate is slidably connected with the fixed plate along the sliding direction of the sampling platform, forming a stable sliding mechanism. One end of the elastic element is fixedly connected to the movable plate, and the other end is fixedly connected to the sampling platform. Such a design enables the movable plate to drive the sampling platform to slide when driven by the first driving mechanism, and realizes the closure and opening of the bottom of the hollow groove under the action of the elastic element. At the same time, the presence of the positioning mechanism ensures that the movable plate can be stably and accurately switched between the first state and the second state. Such a structural design only requires one driving element to realize the coordinated movement of the movable plate and the sampling platform, simplifies the structure of the device, reduces the manufacturing cost, and is also convenient for later maintenance and overhaul.

[0042] (2) The liquid detection equipment of the utility model is specially equipped with a vibration device compatible with the hollow groove at one end of the movable plate. When the sample container is placed in the hollow groove, the vibration device can be automatically started to effectively mix the sample and reagent in the sample container. Through this automated mixing process, the operator does not need to come into close contact with the sample and reagent, thereby avoiding the volatilization and contamination of solvents and chemical reagents, and ensuring the safety and hygiene of the working environment. At the same time, since the mixing process is completely completed by machinery, it not only greatly improves the efficiency of the detection work, but also avoids the secondary contamination that may be caused by manual stirring and mixing, thereby ensuring the accuracy of the test results. This utility model of liquid detection equipment not only simplifies the operation process, but also improves the reliability of the test results.

[0043] (3) The liquid detection device of the utility model is also equipped with a material supply unit and a reagent adding device, thereby realizing the automation of sample container supply and reagent addition. This design not only greatly improves the efficiency of the detection work, but also ensures the consistency and accuracy of the entire detection process. In the liquid detection process, the amount of reagent added is a crucial factor. If the added reagent is insufficient, it may cause insufficient mixing of the sample and the reagent, thereby affecting the accuracy of the test result; if it is excessive, it may cause unnecessary interference to the detection equipment or sample, and even damage the equipment. Therefore, accurately controlling the amount of reagent added is crucial to ensure the reliability of the test results. The liquid detection device of the utility model can accurately control the amount of reagent added. This structural design avoids the problem of insufficient or excessive reagent addition due to human operating errors, thereby ensuring the accuracy and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a structural schematic diagram of a liquid detection device embodiment of the utility model without the box body and the solvent tank;

[0045] Figure 2 This is a schematic diagram of the overall structure of an embodiment of a liquid detection device of the utility model without a box body;

[0046] Figure 3 It is a top view of the overall structure of an embodiment of a liquid detection device of the utility model;

[0047] Figure 4 This is a structural schematic diagram of a box body of a liquid detection device embodiment of the utility model;

[0048] Figure 5 This is a structural schematic diagram of a sampling station of an embodiment of a liquid detection device of the utility model;

[0049] Figure 6A schematic diagram of the structure of a moving plate of a liquid detection device embodiment of the utility model;

[0050] Figure 7 It is a structural schematic diagram of a sample container moving device of an embodiment of a liquid detection device of the utility model;

[0051] Figure 8 This is a schematic structural diagram of a box body of a liquid detection device embodiment of the utility model from another angle;

[0052] Fig. 9 It is a schematic diagram of the assembly structure of a box body and a sample container transfer device of an embodiment of a liquid detection device of the utility model;

[0053] Fig.10 This is a structural schematic diagram of a material supply unit of an embodiment of a liquid detection device of the utility model;

[0054] Fig.11 This is a structural schematic diagram of a material picking arm and a second driving mechanism of an embodiment of a liquid detection device of the utility model.

[0055] Description of reference numerals:

[0056] 1-box; 11-fixed plate; 12-sampling window; 121-groove; 13-sample container cavity; 14-controller; 15-waste bin window; 16-stopper; 17-heat dissipation window;

[0057] 2-sample container moving device; 21-sampling platform; 211-hollow groove; 212-baffle; 213-slideway; 214-installation part; 215-guide rail-slider structure II; 22-moving plate; 221-vibration device; 222-sliding part; 223-connecting part; 224-guide rail-slider structure I; 225-wiring groove; 226-giving groove; 23-elastic element; 24-positioning mechanism; 25-first driving mechanism; 251-driving element; 252-gear-rack structure; 26-position sensor;

[0058] 3-Detection device;

[0059] 4-material supply unit; 41-material barrel; 411-cavity; 412-gap slot; 42-material picker; 421-receiving part; 4211-slot hole; 4212-sensor 1; 422-fixing part; 4221-claw; 43-second driving mechanism;

[0060] 5-reagent adding device; 51-chemical reagent adding unit; 511-chemical reagent chamber; 512-temperature control unit; 513-metering pump 1; 52-solvent adding unit; 521-solvent chamber; 5211-sensor 2; 522-metering pump 2;

[0061] 6- Waste bin;

[0062] 7- Sample container. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0064] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0065] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] The utility model provides a liquid detection device, such as Figure 1-3 As shown, it at least includes a box body 1, a sample container transfer device 2, a detection device 3, a material supply unit 4, a reagent adding device 5 and a waste bin 6.

[0067] like Figure 4 As described, a fixing plate 11 is arranged in the box body 1, and a sampling window 12 matching the position of the fixing plate is arranged on the side wall.

[0068] like Figure 5 and 7The sample container transfer device 2 comprises a sampling platform 21, a moving plate 22, an elastic element 23, a positioning mechanism 24 and a first driving mechanism 25. The sampling platform is slidably connected to the fixed plate 11, and the sampling platform is provided with a hollow groove 211 adapted to the sample container. The sampling platform has a first state in which the hollow groove is located in the box body and a second state in which the hollow groove is located outside the box body through the sampling window along the sliding direction; the moving plate is slidably connected to the fixed plate along the sliding direction of the sampling platform, and one end extends to the bottom of the hollow groove to have a closed state in which the bottom of the hollow groove is closed and an open state in which the bottom of the hollow groove is opened; one end of the elastic element is fixedly connected to the moving plate, and the other end is fixedly connected to the sampling platform; the first driving mechanism is used for:

[0069] When the sampling platform is in the first state under the action of the positioning mechanism, the movable plate is driven to slide relative to the fixed plate to switch between the closed state and the open state;

[0070] And, when the movable plate is in the closed state, the movable plate is driven to slide relative to the fixed plate and the sampling platform is driven to slide under the action of the elastic element to switch between the first state and the second state.

[0071] Three position sensors 26 corresponding to the sampling platform and the moving plate are arranged at intervals on the fixed plate along the sliding direction of the moving plate 22, and are used to detect and identify the position status of the sampling platform and the moving plate. Specifically, the sample container transfer device has three workstations, including a sample container placement workstation where the hollow groove 211 is in a first state and the moving plate 22 is in a closed state, a sample mixing and detection workstation where the hollow groove is in a second state and the moving plate is in a closed state, and a sample container discarding workstation where the hollow groove is in the second state and the moving plate is in an open state.

[0072] like Figure 6 As shown, one end of the movable plate 22 is provided with a vibration device 221 that matches the position of the hollow groove 211 in the first state and is used to mix the sample and reagent in the sample container. When the sample container transfer device is in the sample mixing and detection station, the sample container is located in the hollow groove, and the vibration device vibrates the sample to be tested and the reagent in the sample container, so that the sample to be tested and the reagent are fully mixed. Through this automated mixing process, the operator does not need to come into close contact with the sample and the reagent, thereby avoiding the volatilization and contamination of the solvent and the chemical reagent, and ensuring the safety and sanitation of the working environment. At the same time, since the mixing process is completely completed by machinery, it not only greatly improves the efficiency of the detection work, but also avoids the secondary pollution that may be caused by manual stirring and mixing, ensuring the accuracy of the test results.

[0073] In this embodiment, Figure 5As shown, a baffle 212 is provided at one end of the sampling platform, and a slide groove 213 is provided at the bottom of the other end, which is recessed inward and extends along the sliding direction of the movable plate. The top two sides of the sampling platform are recessed downward to form a symmetrically arranged mounting portion 214, and a guide rail-slider structure 215 is adapted to be connected between the mounting portion and the fixed plate to ensure the sliding stability of the sampling platform. A pin is provided on the upper end surface of the mounting portion for fixed connection with one end of the elastic element 23.

[0074] like Figure 6 As shown, the movable plate includes a sliding portion 222 adapted to be connected with the slide slot 213, and the sliding portion is slidably inserted into the slide slot of the sampling table 21. The vibration device 221 is located at one end of the sliding portion, and as the sliding portion is inserted into the slide slot, the vibration device is located in the slide slot. The two side walls of the end of the sliding portion away from the vibration device extend outward to form a connecting portion 223, and a guide rail-slider structure 224 is adapted to be connected between the connecting portion and the fixed plate, and a pin is provided on the upper end surface of the connecting portion for fixed connection with the other end of the elastic element 23.

[0075] Preferably, the upper end surface of the movable plate is provided with a wiring groove 225 which is recessed downward and communicates with the vibration device 221 and is used for electrical connection between the vibration device and an external circuit.

[0076] like Figure 6-7 As shown, in this embodiment, two elastic elements 23 are symmetrically arranged between the sampling platform and the moving plate for the moving plate to drive the sampling platform to move. The upper end surface of the moving plate is provided with a through-passing groove 226, and the first driving mechanism 25 includes a driving element 251 fixedly mounted on the moving plate and a gear-rack structure 252 mounted on the fixed plate, and the output end of the driving element passes through the pass-through groove and is connected to the gear-rack structure. A guide rail-slider structure 224 is adapted to be connected between the connecting portion 223 of the moving plate and the fixed plate 1.

[0077] In this embodiment, Figure 4 and 9 As shown, the fixing plate 1 is fixedly installed in the box body, dividing the box body into an upper and lower cavity structure. The sample container moving device is installed in the upper cavity of the box body through the fixing plate 1. The box body is provided with a sampling window 12 adapted to the baffle 212, and the position of the sampling window corresponding to the baffle is recessed inward to form a groove 121, and the groove is adapted to the baffle and is smaller than the size of the baffle to form a positioning mechanism 24 for positioning the sampling table 21 in the sliding direction.

[0078] The first driving element drives the moving plate 22 to slide along the direction of the guide rail relative to the fixed plate 1, and the sliding portion 222 of the moving plate slides along the slide groove of the sampling table 21 until the sliding portion 222 abuts against the bottom of the slide groove. The moving plate is located below the hollow groove and is in a closed state of closing the bottom of the hollow groove. The moving plate drives the sampling table to slide together and pass through the sampling window 12 of the box body. The hollow groove 211 is in the second state located outside the box body, which is the sample container placement station of this embodiment.

[0079] After the sample container is placed in the hollow groove 211, the first driving mechanism drives the movable plate to move relative to the fixed plate along the guide rail into the box body, and the movable plate drives the sampling table to pass through the sampling window of the box body along the direction of the guide rail under the action of the elastic element 23. The movable plate is located below the hollow groove and is in a closed state of closing the bottom of the hollow groove. The baffle of the sampling table abuts against the groove of the sampling window for positioning the sliding direction of the sampling table. The hollow groove is in the first state of being located in the box body, which is the sample mixing and detection station of this embodiment.

[0080] After the detection is completed, the first driving mechanism drives the movable plate relative to the fixed plate to move further away from the sampling window of the box along the direction of the guide rail. The positioning mechanism 24, that is, the baffle of the sampling table, abuts against the groove of the sampling window. The hollow groove remains in the first state in the box. The movable plate draws out the sampling table along the direction of the slide groove and is in an open state with the bottom of the hollow groove opened, which is the sample container disposal station of this embodiment.

[0081] Preferably, the side wall of the box is provided with a controller 14 electrically connected to the first driving mechanism 25 and the position sensor 26, and the controller is used to control the first driving mechanism 25 based on the position data obtained by the position sensor 26, thereby driving the movable plate to slide relative to the fixed plate and driving the sampling table to slide under the action of the elastic element 23, thereby switching from the second state to the first state. Thus, the sample container transfer device switches from the sample container placement station to the sample mixing and detection station.

[0082] The detection device 3 is installed above the sample container transfer device 2 and matches the position of the hollow groove 211 in the first state for detecting the sample in the sample container. In this embodiment, when the sample container transfer device is in the sample mixing and detection position, the detection device performs optical detection on the sample in the sample container that has been fully mixed with the solvent and the chemical reagent.

[0083] like Figure 4 As shown, the box body is provided with a sample container cavity 13 adapted to the output end of the material supply unit 4 for receiving the sample container supplied by the material supply unit.

[0084] like Fig.10As shown, the material supply unit 4 includes a material barrel 41, a material picking hand 42 and a second driving mechanism 43; the material barrel 41 is provided with an internal cavity 411 which is connected from top to bottom and is used to load sample containers stacked in sequence; the free end of the material picking hand 42 is adapted to the outlet of the material barrel and is used to control the sample containers loaded in the cavity to fall into the sample container cavity 13 in sequence. The second driving mechanism 43 is used to drive the movement of the material picking hand.

[0085] In this embodiment, a gap groove 412 is provided on the side wall of the material barrel, and the material grabber includes a receiving portion 421 located below the outlet of the material barrel and a fixing portion 422 extending outwardly from the upper end surface of the receiving portion and arranged parallel to the receiving portion.

[0086] like Fig.11 As shown, the receiving portion is provided with a slot hole 4211 matching with the outlet of the material barrel, and the free end of the fixing portion is provided with a claw 4221 matching with the gap slot.

[0087] The material taking hand has a third state and a fourth state;

[0088] In the third state, the claw 4221 is located outside the gap groove 412 and the slot hole 4211 is misaligned with the outlet of the material barrel 41, so that the lowest sample container in the cavity falls into the receiving portion;

[0089] In the fourth state, the claw 4221 passes through the gap groove 412 and is inserted between the lowest sample container and the adjacent higher sample container to fix the adjacent higher sample container, and the slot hole is coaxial with the outlet of the material cylinder so that the lowest sample container passes through the slot hole and falls into the sample container cavity 13;

[0090] The second driving mechanism drives the receiving portion 421 and the fixing portion 422 of the material grabbing hand to move synchronously and switch between the third state and the fourth state.

[0091] When the detection starts, the second driving element 43 drives the receiving part 421 and the fixing part 422 to move synchronously, switching from the fourth state to the third state. The sample container at the lowest position in the cavity slides down along the inner wall of the cavity 411 under the action of gravity and falls on the upper end surface of the receiving part.

[0092] It should be noted that the distance between the receiving part and the material barrel is smaller than the height of the sample container. Since the outlet of the material barrel is misaligned with the slot 4211, the sample container is located on the upper end surface of the receiving part and part of its volume is located in the cavity.

[0093] In this embodiment, a sensor 1 4212 is provided in the receiving part for detecting the position data of the sample container. When the sample container is located on the receiving part, the second driving element 43 drives the receiving part 421 and the fixing part 422 to move synchronously through the position data of the sensor 1, and switches from the third state to the fourth state. The claw 4221 of the fixing part passes through the gap groove 412 and is inserted between the lowest sample container and the adjacent high sample container, and the adjacent high sample container is fixed in the cavity. At the same time, the slot hole 4211 of the receiving part is coaxial with the outlet of the material barrel, and the lowest sample container passes through the slot hole 4211 and falls into the sample container cavity 13. Such a structural design realizes the automation of the sequential falling of the sample containers.

[0094] The waste bin 6 is installed in the box body and the bin opening matches the position of the hollow groove. In this embodiment, the waste bin is installed in the lower cavity in the box body. When the test is completed, the sample container transfer device is in the sample container discarding position, the bottom of the hollow groove is in an open state, and the sample container slides along the inner wall of the hollow groove into the waste bin under the action of gravity. Figure 8 As shown, the box body 1 is also provided with a waste bin window 15 matched with the waste bin 6 for putting the waste bin into and taking it out of the box body, and the size of the waste bin window is matched with the size of the waste bin 6.

[0095] The reagent adding device 5 includes a chemical reagent adding unit 51 and a solvent adding unit 52. The output ends of the chemical reagent adding unit and the solvent adding unit are adapted to the notch of the hollow groove in the first state. The solvent adding unit is used to add solvent to the sample in the sample container, and the chemical reagent adding unit is used to add chemical reagent to the sample in the sample container.

[0096] like Figure 2 and 3 As shown, in this embodiment, the chemical reagent adding unit 51 and the reagent adding unit 52 are installed in the upper cavity of the box. The chemical reagent adding unit includes a plurality of reagent chambers 511 for loading chemical reagents, a temperature control unit 512 for controlling the temperature of the reagent chambers, and a metering pump 1 513 connected to the reagent chambers one by one. The reagent chamber adds chemical reagents to the sample container in the hollow groove in the first state through the metering pump 1.

[0097] The solvent adding unit 52 includes a solvent tank 521 for loading solvent and a metering pump 2 522 connected to the solvent tank. The solvent tank adds solvent to the sample container in the hollow groove in the first state through the metering pump 2. A sensor 2 5211 is provided at the bottom of the solvent tank for detecting the amount of solvent in the solvent tank. Such a structure can accurately control the amount of reagent added. This structural design avoids the problem of insufficient or excessive reagent addition caused by human operation errors, thereby ensuring the accuracy and reliability of the test results.

[0098] Preferably, Figure 4 As shown, the inner wall of the box body is provided with a plurality of blocks 16 for installing the solvent bin 521. The side wall of the box body is provided with a heat dissipation window 17.

[0099] In short, 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 in the protection scope of the present invention.

Claims

1. A liquid detection device, characterized in that: At least: A box body (1), wherein a fixing plate (11) is arranged inside the box body and a sampling window (12) is arranged on the side wall; A sample container transfer device (2), the sample container transfer device comprising: A sampling platform (21), the sampling platform being slidably connected to the fixing plate (11), the sampling platform being provided with a hollow groove (211) adapted to the sample container, the sampling platform having a first state in which the hollow groove is located inside the box body, and a second state in which the hollow groove is located outside the box body by passing through the sampling window along a sliding direction; A movable plate (22), the movable plate being slidably connected to the fixed plate along the sliding direction of the sampling platform, and having one end extending below the hollow groove and having a closed state for closing the bottom of the hollow groove and an open state for opening the bottom of the hollow groove; an elastic element (23), one end of which is fixedly connected to the movable plate, and the other end of which is fixedly connected to the sampling platform; A positioning mechanism (24), the positioning mechanism being used for positioning the sampling platform in a sliding direction; A first driving mechanism (25), wherein the first driving mechanism is used to: When the sampling platform is in the first state under the action of the positioning mechanism, the movable plate is driven to slide relative to the fixed plate to switch between the closed state and the open state; And, when the movable plate is in a closed state, the movable plate is driven to slide relative to the fixed plate and the sampling platform is driven to slide under the action of the elastic element to switch between the first state and the second state; A detection device (3) is installed above the sample container transfer device and matches the position of the hollow groove in the first state for detecting the sample in the sample container.

2. A liquid detection device according to claim 1, characterized in that: One end of the movable plate is provided with a vibration device (221) matching the position of the hollow groove in the first state, and used for mixing the sample and the reagent in the sample container.

3. A liquid detection device according to claim 2, characterized in that: Three position sensors (26) corresponding to the sampling platform (21) and the moving plate (22) are arranged at intervals on the fixed plate along the sliding direction of the moving plate (22) to detect and identify the position status of the sampling platform and the moving plate.

4. A liquid detection device according to any one of claims 1 to 3, characterized in that: A baffle (212) is provided at one end of the sampling platform, and a position of the sampling window (12) corresponding to the baffle is recessed inward to form a groove (121), and the groove and the baffle are matched to form the positioning mechanism (24) for positioning the sampling platform in a sliding direction.

5. A liquid detection device according to claim 4, characterized in that: A slide groove (213) is provided at the bottom of the other end of the sampling platform, which is recessed inward and extends along the sliding direction of the movable plate. The movable plate (22) includes a sliding portion (222) adapted to be connected to the slide groove. The sliding portion extends outward away from the two side walls of one end of the sampling platform to form a connecting portion (223). A guide rail-slider structure (224) is adapted to be connected between the connecting portion and the fixed plate.

6. A liquid detection device according to claim 5, characterized in that: The two sides of the top of the sampling platform are recessed downward to form a symmetrically arranged mounting portion (214), and a guide rail-slider structure (215) is adapted to be connected between the mounting portion and the fixed plate. The mounting portion is provided with a pin for fixedly connecting with one end of the elastic element (23), and the connecting portion (223) is provided with a pin for fixedly connecting with the other end of the elastic element (23).

7. A liquid detection device according to any one of claims 1-3 or 5-6, characterized in that: It also comprises a material supply unit (4), the box body (1) is provided with a sample container cavity (13) adapted to the output end of the material supply unit, and the material supply unit comprises: A material barrel (41), wherein the material barrel is provided with an internal cavity (411) which is connected vertically and is used for loading sample containers stacked in sequence; A material taking hand (42), the free end of which is adapted to the outlet of the material barrel and is used to control the sample containers loaded in the cavity to fall into the sample container cavity (13) in sequence; A second driving mechanism (43), the second driving mechanism is used to drive the material taking hand to move.

8. A liquid detection device according to claim 7, characterized in that: A gap groove (412) is provided on the side wall of the material barrel, and the material picking hand includes a receiving portion (421) located below the outlet of the material barrel and a fixing portion (422) extending outward from the upper end surface of the receiving portion and arranged parallel to the receiving portion, the receiving portion is provided with a slot hole (4211) matching the outlet of the material barrel, and the free end of the fixing portion is provided with a claw (4221) adapted to the gap groove.

9. A liquid detection device according to claim 8, characterized in that: The material taking hand has a third state and a fourth state; In the third state, the claw (4221) is located outside the gap groove (412) and the slot hole (4211) is misaligned with the outlet of the material cylinder (41), so that the lowest sample container in the cavity falls into the receiving portion; In the fourth state, the clamping claw (4221) passes through the gap groove (412) and is inserted between the lowest sample container and the adjacent higher sample container to fix the adjacent higher sample container, and the slot hole is coaxial with the outlet of the material barrel so that the lowest sample container passes through the slot hole and falls into the sample container cavity (13); The second driving mechanism drives the receiving part (421) and the fixing part (422) of the material grabbing arm to move synchronously to switch between the third state and the fourth state.

10. A liquid detection device according to claim 9, characterized in that: The receiving portion is provided with a sensor 1 (4212) for detecting a sample container dropped onto the receiving portion.

11. A liquid detection device according to any one of claims 1-3, 5-6 or 8-10, characterized in that: It also comprises a reagent adding device (5), the reagent adding device comprising a chemical reagent adding unit (51) and a solvent adding unit (52), the output ends of the chemical reagent adding unit and the solvent adding unit being adapted to the notch of the hollow groove in the first state.

12. A liquid detection device according to claim 11, characterized in that: The chemical reagent adding unit (51) comprises a plurality of reagent chambers (511) for loading chemical reagents, a temperature control unit (512) for controlling the temperature of the reagent chambers, and a metering pump (513) connected one-to-one with the reagent chambers, and the reagent chamber adds chemical reagents to the sample container in the hollow groove in the first state through the metering pump.

13. A liquid detection device according to claim 12, characterized in that: The solvent adding unit (52) comprises a solvent tank (521) for loading solvent and a second metering pump (522) connected to the solvent tank, wherein the solvent tank adds solvent to a sample container in a hollow groove in the first state through the second metering pump, and a second sensor (5211) is provided at the bottom of the solvent tank for detecting the amount of solvent in the solvent tank.

14. A liquid detection device according to any one of claims 1-3, 5-6, 8-10 or 12-13, characterized in that: It also includes a waste bin (6), which is installed in the box body and matches the position of the hollow slot in the first state.

15. A liquid detection device according to claim 3, characterized in that: The side wall of the box body is provided with a controller (14) electrically connected to the first driving mechanism (25) and the position sensor (26), and the controller is used to control the operation of the first driving mechanism (25) based on the position data obtained by the position sensor (26), thereby driving the movable plate to slide relative to the fixed plate and, under the action of the elastic element (23), driving the sampling table to slide and switch from the second state to the first state.

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