An intelligent heavy metal detector

Abstract

The invention discloses an intelligent heavy metal detector, comprising a central control module, a sample adding and weighing mechanism, an oscillating and rotating mechanism, a lifting and lowering detection head mechanism, a detection disk mechanism and a pumping mechanism; the sample adding and weighing mechanism is used for adding a test agent into a reagent container, and weighing the reagent container after the sample adding is completed; a plurality of reagent containers are arranged in the oscillating and rotating mechanism, and the oscillating and rotating mechanism is used for making the plurality of reagent containers rotate to positions corresponding to the sample adding and weighing mechanism in sequence, so as to complete the sample adding of the plurality of reagent containers respectively; the oscillating and rotating mechanism is also used for oscillating and standing the reagents in the plurality of reagent containers after the sample adding is completed; the pumping mechanism is used for pumping the processed reagents in the reagent containers into the detection disk mechanism; the lifting and lowering detection head mechanism cooperates with the detection disk mechanism to complete the heavy metal detection of the reagents, and output the detection result through the central control module; the pumping mechanism is also used for extracting the reagents after the detection is completed.

Description

Technical Field

[0001] The present invention relates to the field of heavy metal detection, and in particular to an intelligent heavy metal detector. Background Art

[0002] When a heavy metal detector is in operation, the electrode head of the collection unit needs to be inserted into the analysis cell to detect the reagents in the analysis cell. Currently, heavy metal detectors have a low degree of automation and require a lot of manual operation. The operation is cumbersome and inefficient, and manual operation is prone to errors, resulting in detection failure or insufficient detection accuracy. Summary of the Invention

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides an intelligent heavy metal detector, comprising a housing and a central control module installed in the housing, a sample adding and weighing mechanism, an oscillating and rotating mechanism, a lifting and lowering detection head mechanism, a detection disk mechanism and a pumping mechanism;

[0004] The central control module is used to control the intelligent operation of the intelligent heavy metal detector;

[0005] The housing is provided with a feeding port, and the feeding port corresponds to the upper opening of the sample adding and weighing mechanism. The sample adding and weighing mechanism is used to add the test agent into the reagent container inside the housing and weigh the reagent container after the sample is added.

[0006] The oscillating rotation mechanism is equipped with a plurality of reagent containers, and the oscillating rotation mechanism is used to rotate the plurality of reagent containers in sequence to positions corresponding to the sample loading and weighing mechanism, so as to complete the loading of samples into the plurality of reagent containers;

[0007] The oscillating and rotating mechanism is also used to oscillate and statically process the reagents in the multiple reagent containers after the sample addition is completed;

[0008] The pumping mechanism is used to pump the processed reagent in the reagent container into the detection disk mechanism;

[0009] The lifting detection head mechanism cooperates with the detection disk mechanism to complete the heavy metal detection of the reagent and output the detection results through the central control module;

[0010] The pumping mechanism is also used to extract the reagent after the test is completed.

[0011] In some embodiments, the sample adding and weighing mechanism includes a stand, a linear module, a weighing sensor, a connecting plate, a container positioning member, and a feeding bin;

[0012] The stand is fixed to the bottom plate of the housing;

[0013] The linear module is installed on the side of the stand, and the connecting plate is installed on the linear module. The connecting plate can move up and down under the control of the linear module;

[0014] The weighing sensor is fixedly mounted on the connecting plate, and the container positioning member is mounted above the weighing sensor;

[0015] The feeding bin is installed at the top of the stand, and is a funnel-shaped structure. The upper port of the feeding bin is located at the feeding port on the shell, and the lower port of the feeding bin is facing the container positioning member.

[0016] The container positioning member is used to enable the sample container to be placed thereon and to define the position of the sample container, and the container positioning member can move up and down along with the connecting plate.

[0017] In some embodiments, the sample adding and weighing mechanism also includes a push-pull plate and an electromagnetic push-pull valve installed next to the feeding bin, and the push-pull plate is used to open or close the feeding port of the shell under the control of the electromagnetic push-pull valve; a gasket is also provided on the inner side of the container positioning member.

[0018] In some embodiments, the oscillation and rotation mechanism includes an oscillation module and a rotation module;

[0019] The oscillation module includes a first motor, a first rotating shaft, a plurality of eccentric shafts, a base, a fixed connecting body and a movable connecting plate;

[0020] The base is fixed to the bottom plate of the housing;

[0021] The rotating module includes a second motor, a second rotating shaft and a rotating tray, wherein the second motor is used to control the rotation of the rotating tray through the second rotating shaft, and the rotating module is entirely located above the movable connecting plate;

[0022] The first motor is used to control the rotation of the first rotating shaft, and the first rotating shaft is fixedly connected to the movable connecting plate;

[0023] The fixed connection body is fixedly connected to the base, and both the fixed connection body and the base are hollow structures, and the hollow area formed is used for the entire structure of the first motor, the first rotating shaft and the movable connecting plate to pass through and provide a certain movement space;

[0024] The upper and lower ends of multiple eccentric shafts are respectively fixedly connected to the movable connecting plate and the fixed connecting body. The multiple eccentric shafts are used to convert the rotation of the first rotating shaft into a rotary oscillating motion, thereby driving the movable connecting plate and the rotating module above to perform a rotary oscillating motion as a whole.

[0025] In some embodiments, the rotation module further includes a mounting frame, a rotating partition plate, a tray support, and a limit switch;

[0026] The bottom end of the mounting frame is fixed to the movable connecting plate, the second motor is fixed to the mounting frame, the second rotating shaft is fixedly connected to the rotating dividing plate, the tray support is fixed above the rotating dividing plate, the tray support is fixedly connected to the rotating tray, and the limit switch is installed on the mounting frame and is located next to the rotating dividing plate;

[0027] The rotating tray is provided with a plurality of container receiving portions along the circumferential direction for placing reagent containers; the rotating dividing plate is provided with a plurality of triggering portions along the circumferential direction for triggering the limit switch, so that when the rotating dividing plate rotates a certain angle and triggers the limit switch, the second motor stops working, thereby controlling the rotation angle of the rotating tray.

[0028] In some embodiments, the rotating module further comprises a container support plate, which is a hollow structure, and the hollow area of ​​the container support plate is used for arranging the mounting frame and related structures. The container support plate is located below the rotating tray, and the container support plate does not rotate with the rotating tray.

[0029] A through hole is formed on the container support plate, the size of which is such that the reagent containers in the container receiving portion can pass through, and each reagent container can reach the through hole through the rotation of the rotating tray;

[0030] The through hole is located between the lower port of the feeding bin and the container positioning member, so that the reagent container reaching the through hole can cooperate with the sample adding and weighing mechanism to complete sample adding and weighing.

[0031] In some embodiments, the detection disc mechanism includes a plurality of analysis cells;

[0032] The lifting detection head mechanism includes a lifting module and a detection head module;

[0033] The lifting module includes a vertical frame, a crossbeam, a first stepper motor, a lifting gear and a rack;

[0034] The straight frame is fixed to the bottom plate of the housing;

[0035] A slide rail structure is formed on the vertical frame, and a sliding structure that matches the slide rail structure is formed at one end of the crossbeam;

[0036] Furthermore, the first stepper motor and the lifting gear are fixed to the end of the crossbeam, the rack is fixed to the vertical frame in the longitudinal direction, the lifting gear and the rack are engaged with each other, and the first stepper motor is used to control the rotation of the lifting gear, thereby driving the crossbeam as a whole to slide up and down relative to the vertical frame;

[0037] The detection head module is fixedly arranged on the crossbeam so as to be able to move up and down together with the crossbeam;

[0038] The detection head module includes a plurality of electrode heads. The detection head module is located above the detection disk mechanism. The electrode heads can extend into the analysis cell to complete the detection.

[0039] In some embodiments, the detection plate mechanism further comprises a detection plate, a rotating table, and a lifting sampling member;

[0040] The base of the rotating platform is fixed to the bottom plate of the housing, and the detection disk is installed above the rotating platform. The rotating platform is used to control the overall rotation of the detection disk;

[0041] A plurality of analysis cells are arranged on the upper surface of the detection disk;

[0042] The lifting sampling member and the detection head module are respectively located on different sides above the detection plate;

[0043] The lifting sampling member is also connected to the pumping mechanism. The lifting sampling member is used to extend into or leave the analysis pool by automatic lifting, and under the control of the pumping mechanism, pump the reagent to be tested into the analysis pool or extract the reagent after testing.

[0044] In some embodiments, the pumping mechanism includes several plunger pumps and several multi-channel solenoid valves, the plunger pumps are used to control liquid addition and discharge, and the multi-channel solenoid valves are used to switch the corresponding working channels of the plunger pumps to switch the functions of the plunger pumps.

[0045] In some embodiments, a first auxiliary liquid adding device and a second auxiliary liquid adding device are further included; the liquid inlet ends of the first auxiliary liquid adding device and the second auxiliary liquid adding device are both connected to the pumping mechanism; and the liquid outlet end of the first auxiliary liquid adding device is located above the oscillating and rotating mechanism, and is used to add the first auxiliary liquid to the reagent container of the oscillating and rotating mechanism; the liquid outlet end of the second auxiliary liquid adding device is located above the detection disk mechanism, and is used to add the second auxiliary liquid to the analysis pool of the detection disk mechanism.

[0046] The beneficial effects of the present invention are as follows: the intelligent heavy metal detector provided by the present invention can automatically realize most operations in the heavy metal detection process, which is very convenient, greatly reduces the workload of the staff, and improves the detection efficiency and detection accuracy; and has a high degree of integration and saves space. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a top view of the interior of the intelligent heavy metal detector provided by the present invention;

[0048] Figure 2 This is the internal front view of the intelligent heavy metal detector provided by the present invention;

[0049] Figure 3 This is an internal left view of the intelligent heavy metal detector provided by the present invention;

[0050] Figure 4 It is a three-dimensional schematic diagram of the sample adding and weighing mechanism;

[0051] Figure 5 This is the exploded diagram of the oscillating rotation mechanism;

[0052] Figure 6 It is a three-dimensional schematic diagram of the oscillating rotation mechanism;

[0053] Figure 7 It is the main cross-sectional view of the oscillating rotating mechanism;

[0054] Figure 8 This is a partial exploded diagram of the lifting detection head mechanism;

[0055] Figure 9 It is a three-dimensional schematic diagram of the lifting detection head mechanism.

[0056] Description of reference numerals:

[0057] 1. Sample adding and weighing mechanism; 2. Oscillation and rotation mechanism; 3. Lifting and lowering detection head mechanism; 4. Detection plate mechanism; 5. Pumping mechanism; 6. First auxiliary liquid adding device; 7. Second auxiliary liquid adding device; 8. Bottom plate; 11. Solenoid push-pull valve; 12. Linear module; 13. Feeding bin; 14. Feeding bin; 15. Container positioning member; 16. Weighing sensor; 17. Stand; 18. Connecting plate; 21. First motor; 22. Eccentric shaft; 23. Driven pulley; 24. Limit switch; 25. Optocoupler switch; 26. Driving pulley; 27. Second motor; 28. Rotating tray; 29. ​​Shock-absorbing rubber pad; 210. Base; 211. Movable connecting plate; 212. Rotating partition plate; 213. Second fixed plate; 214. First rotating shaft; 215. Cam counterweight plate; 216. First fixed plate; 217. Connecting column; 218. Container support plate; 219. Through hole; 220. Mounting frame; 221. Second rotating shaft; 222. Tray support; 31. Straight frame; 32. Crossbeam; 33. First stepper motor; 34. Lifting gear; 35. Rack; 36. Second stepper motor; 37. Collection plate; 38. Driving gear; 39. Driven gear; 310. Slip ring; 311. Outer cover; 312. Lifting limit switch; 313. Electrode head; 314. Electrode socket; 41. Detection plate; 42. Analysis cell; 43. Rotating table; 44. Lifting sampling piece. DETAILED DESCRIPTION

[0058] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention described, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] Unless otherwise defined, technical or scientific terms used in the present invention shall have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

[0060] Reference Figure 1-Figure 3As shown, an intelligent heavy metal detector includes a shell (not shown) and a central control module installed in the shell, a sample adding and weighing mechanism 1, an oscillating and rotating mechanism 2, a lifting and lowering detection head mechanism 3, a detection disk mechanism 4 and a pumping mechanism 5; the central control module is used to control the intelligent operation of the intelligent heavy metal detector; a feeding port is opened on the shell, and the feeding port corresponds to the upper end opening of the sample adding and weighing mechanism 1, the sample adding and weighing mechanism 1 is used to add the test agent into the reagent container inside the shell, and weigh the reagent container after the sample is added; a plurality of reagent containers are installed in the oscillating and rotating mechanism 2, The oscillating and rotating mechanism 2 is used to make multiple reagent containers rotate in sequence to the positions corresponding to the sample adding and weighing mechanism 1 to complete the separate sample adding of multiple reagent containers; the oscillating and rotating mechanism 2 is also used to oscillate and statically treat the reagents in the multiple reagent containers after the sample adding is completed; the pumping mechanism 5 is used to pump the processed reagents in the reagent containers into the detection disk mechanism 4; the lifting detection head mechanism 3 cooperates with the detection disk mechanism 4 to complete the heavy metal detection of the reagents and output the detection results through the central control module; the pumping mechanism 5 is also used to extract the reagents after the detection is completed.

[0061] Further references Figure 4 In one embodiment, the sample loading and weighing mechanism 1 includes a stand 17, a linear module 12, a load cell 16, a connecting plate 18, a container locator 15, and a loading bin 14. The stand 17 is fixed to the bottom plate 8 of the housing. The linear module 12 is mounted on the side of the stand 17, and the connecting plate 18 is mounted on the linear module 12. The connecting plate 18 can move up and down under the control of the linear module 12. The load cell 16 is fixedly mounted on the connecting plate 18, and the container locator 15 is mounted above the load cell 16. The loading bin 14 is mounted on the top of the stand 17. The loading bin 14 has a funnel-shaped structure, with its upper end located at the feeding port of the housing and its lower end facing the container locator 15. The container locator 15 is used to place a sample container thereon and define its position. The container locator 15 can move up and down with the connecting plate 18. The sample container can be a test tube, and the container locator 15 can be a test tube sleeve corresponding to the size of the test tube.

[0062] Preferably, the sample adding and weighing mechanism 1 also includes a push-pull plate 13 and an electromagnetic push-pull valve 11 installed next to the feeding bin 14. The push-pull plate 13 is used to open or close the feeding port of the shell under the control of the electromagnetic push-pull valve 11; a gasket is also provided on the inner side of the container positioning member 15 to prevent damage to the sample container.

[0063] It is understandable that the linear module 12 can be implemented using existing structures, such as a linear module including a stepper motor, a screw rod and other structures, or other types of linear modules can be used, as long as it can control the overall up and down movement of the weighing sensor 16, the connecting plate 18 and the container positioning member 15.

[0064] Further references Figure 5-Figure 7 In a specific embodiment, the oscillation and rotation mechanism 2 includes an oscillation module and a rotation module; the oscillation module includes a first motor 21, a first rotating shaft 214, a plurality of eccentric shafts 22, a base 210, a fixed connector and a movable connecting plate 211; the base 210 is fixed to the bottom plate 8 of the housing; the rotation module includes a second motor 27, a second rotating shaft 221 and a rotating tray 28, the second motor 27 is used to control the rotation of the rotating tray 28 through the second rotating shaft 221, and the rotation module is located above the movable connecting plate 211; the first motor 21 is used to control the rotation of the first rotating shaft 214, the first rotating shaft 221 14 is fixedly connected to the movable connecting plate 211; the fixed connecting body is fixedly connected to the base 210, and both the fixed connecting body and the base 210 are hollow structures, and the hollow area formed is used for the first motor 21, the first rotating shaft 214 and the overall structure of the movable connecting plate 211 to pass through and provide a certain movement space; the upper and lower ends of the multiple eccentric shafts 22 are respectively fixedly connected to the movable connecting plate 211 and the fixed connecting body, and the multiple eccentric shafts 22 are used to convert the rotation of the first rotating shaft 214 into a rotary oscillating motion, thereby driving the movable connecting plate 211 and the rotating module above to perform a rotary oscillating motion as a whole.

[0065] Preferably, there are four eccentric shafts 22, evenly distributed outside the first rotating shaft 214. The eccentricity of each eccentric shaft 22 can be adjusted to change the amplitude of the rotary oscillation. It is understood that when the various rotating shafts described in the present invention (including the eccentric shafts 22) are connected to other structures, they can all be connected using existing bearing structures, and the present invention is not specifically limited thereto.

[0066] In the illustrated embodiment, the fixed connection body includes a first fixing plate 216 and a second fixing plate 213. Both the first fixing plate 216 and the second fixing plate 213 are hollow structures. The first fixing plate 216 is located above the second fixing plate 213. The first fixing plate 216 and the second fixing plate 213 are fixedly connected via a plurality of connecting structures coated with shock-absorbing rubber pads 29. The first fixing plate 216 is fixedly connected to the base 210 via a plurality of connecting columns 217, and the lower ends of the plurality of eccentric shafts 22 are fixedly connected to the second fixing plate 213. In addition, a cam counterweight plate 215 can be added to the bearing connecting the first rotating shaft 214 and the movable connecting plate 211 to jointly reduce the negative effects of vibration and improve the balance performance during rotational vibration.

[0067] Preferably, an optical coupler switch 25 is installed on the second fixing plate 213 , and the optical coupler switch 25 is used to detect the position of the first motor 21 during the rotary oscillation, so that the first motor 21 returns to the initial position when the rotary oscillation ends.

[0068] Preferably, the rotating module also includes a mounting frame 220, a rotating dividing plate 212, a tray support 222 and a limit switch 24; the bottom end of the mounting frame 220 is fixed on the movable connecting plate 211, the second motor 27 is fixed on the mounting frame 220, the second rotating shaft 221 is fixedly connected to the rotating dividing plate 212, the tray support 222 is fixed above the rotating dividing plate 212, the tray support 222 is fixedly connected to the rotating tray 28, and the limit switch 24 is installed on the mounting frame 220 and is located next to the rotating dividing plate 212; a plurality of container receiving portions are provided on the rotating tray 28 along the circumferential direction for placing reagent containers; a plurality of trigger portions are provided on the rotating dividing plate 212 along the circumferential direction for triggering the limit switch 24, so that when the rotating dividing plate 212 rotates a certain angle and triggers the limit switch 24, the second motor 27 stops working, thereby controlling the rotation angle of the rotating tray 28.

[0069] Preferably, the rotating module also includes a container support plate 218, which is a hollow structure, and the hollow area of ​​the container support plate 218 is used for the installation of the mounting frame 220 and related structures. The container support plate 218 is located below the rotating tray 28, and the container support plate 218 does not rotate with the rotating tray 28; a through hole 219 is provided on the container support plate 218, and the size of the through hole 219 allows the reagent container in the container receiving portion to pass through, and through the rotation of the rotating tray 28, each reagent container can reach the through hole 219; the through hole 219 is located between the lower port of the feeding bin 14 and the container positioning member 15, so that the reagent container reaching the through hole 219 can cooperate with the sample adding and weighing mechanism 1 to complete the sample adding and weighing.

[0070] By controlling the rotation angle of the rotating tray 28, it can be conveniently coordinated with the sample adding and weighing mechanism 1, so that each reagent container is rotated to the feeding port in turn, thereby completing the feeding of all reagent containers, and allowing the reagent containers after feeding to reach the container positioning member 15 through the through hole 219. Then the linear module 12 controls the container positioning member 15 to drive the reagent container to descend, so as to complete the weighing through the weighing sensor 16. After weighing, the linear module 12 controls the container positioning member 15 to drive the reagent container to rise, so that the test tube container docks with the rotating tray 28. Thereafter, the rotating tray 28 rotates so that the next test tube container reaches the feeding and weighing position.

[0071] In the illustrated embodiment, the rotation module also includes a driving pulley 26, a synchronous belt, and a driven pulley 23. A second motor 27 and the driving pulley 26 are fixed to the side of the mounting frame 220, while the driven pulley 23 is fixed to the center of the mounting frame 220. The output shaft of the second motor 27 is fixedly connected to the driving pulley 26, and the driving pulley 26 and the driven pulley 23 rotate synchronously via a synchronous belt. The lower end of the second rotating shaft 221 is fixedly connected to the driven pulley 23. This arrangement makes the structural layout of the rotation module more rational and improves space utilization.

[0072] Preferably, rotating tray 28 has a double-layer structure, with the two layers of rotating tray 28 fixedly connected to each other. Multiple container-receiving holes are defined on the periphery of both the first and second layers of rotating tray 28, with the positions of the container-receiving holes on the first and second layers corresponding one to one, thereby forming multiple container-receiving sections. The double-layer structure of rotating tray 28 improves the stability of reagent container storage and is particularly suitable for accommodating test tubes, as shown in the figure.

[0073] Further references Figure 8 and Figure 9 In a specific embodiment, the lifting detection head mechanism 3 includes a lifting module and a detection head module; the lifting module includes a straight frame 31, a crossbeam 32, a first stepper motor 33, a lifting gear 34 and a rack 35; the straight frame 31 is fixed on the bottom plate 8 of the shell; a slide rail structure is formed on the straight frame 31, and a sliding structure that cooperates with the slide rail structure is formed at one end of the crossbeam 32; and the first stepper motor 33 and the lifting gear 34 are fixed to the end of the crossbeam 32, the rack 35 is fixed to the straight frame 31 along the longitudinal direction, the lifting gear 34 and the rack 35 are engaged with each other, and the first stepper motor 33 is used to control the rotation of the lifting gear 34, thereby driving the crossbeam 32 to slide up and down as a whole relative to the straight frame 31; the detection head module is fixedly arranged on the crossbeam 32, so that it can move up and down with the crossbeam 32; the detection head module includes a plurality of electrode heads 313, and the detection head module is located above the detection disk mechanism 4, and the detection disk mechanism 4 includes a plurality of analysis cells 42, and the electrode heads 313 can be extended into the analysis cells 42 to complete the detection.

[0074] Preferably, the lifting module also includes two lift limit switches 312 mounted on the vertical frame 31. When either lift limit switch 312 is triggered, the first stepper motor 33 automatically stops. The lift limit switches 312 can be photoelectric switches combined with light shields, or other types of limit switches. The two lift limit switches 312 are respectively used to limit the lowest and highest points of the detection head module's movement.

[0075] In the illustrated embodiment, the detection head module includes a housing, a second stepper motor 36, a driving gear 38 and several collection components; the housing includes an outer cover 311 and multiple connection structures for connecting and fixing the various components in the detection head module, and the housing is fixedly connected to the crossbeam 32; the second stepper motor 36 is used to control the rotation of the driving gear 38; each collection component includes an electrode socket 314, an electrode head 313, a driven gear 39, a collection plate 37 and a slip ring 310; in each collection component, the driven gear 39 is meshed with the driving gear 38, or with other The driven gears 39 are meshed so that each driven gear 39 can rotate with the rotation of the driving gear 38; the acquisition board 37 is installed at the upper end of the driven gear 39, the electrode socket 314 is installed at the lower end of the driven gear 39, and the electrode head 313 is detachably mounted on the electrode socket 314; the electrode head 313 passes through the bottom of the shell and extends to the lower end for acquiring the acquisition signal; the slip ring 310 is located above the acquisition board 37, the lower lead of the slip ring 310 is electrically connected to the corresponding acquisition board 37, and the upper lead is electrically connected to the circuit board of the heavy metal detector.

[0076] In the illustrated embodiment, the detection head module includes four acquisition components, and the device can be selected to be single-channel, dual-channel, triple-channel or more channels according to actual needs.

[0077] In a specific embodiment, the detection disk mechanism 4 also includes a detection disk 41, a rotating table 43 and a lifting sampling part 44; the base of the rotating table 43 is fixed on the bottom plate 8 of the outer shell, and the detection disk 41 is installed above the rotating table 43, and the rotating table 43 is used to control the overall rotation of the detection disk 41; multiple analysis pools 42 are all arranged on the upper surface of the detection disk 41; the lifting sampling part 44 and the detection head module are respectively located on different sides above the detection disk 41; the lifting sampling part 44 is also connected to the pumping mechanism 5, and the lifting sampling part 44 is used to automatically lift and extend into or out of the analysis pool 42, and under the control of the pumping mechanism 5, pump the reagent to be tested into the analysis pool 42 or extract the reagent after detection.

[0078] Preferably, the pumping mechanism 5 includes several plunger pumps and several multi-channel solenoid valves. The plunger pumps are used to control the addition and removal of liquid, and the multi-channel solenoid valves are used to switch the working channels of the corresponding plunger pumps to switch the functions of the plunger pumps. It is understood that in addition to pumping the relevant reagents, the multi-channel solenoid valves can also switch the corresponding plunger pumps to the clean water channel to achieve a cleaning function.

[0079] Preferably, the intelligent heavy metal detector further includes a first auxiliary liquid adding device 6 and a second auxiliary liquid adding device 7; the liquid inlets of the first auxiliary liquid adding device 6 and the second auxiliary liquid adding device 7 are both connected to the pumping mechanism 5; and the liquid outlet of the first auxiliary liquid adding device 6 is located above the oscillating and rotating mechanism 2, for adding the first auxiliary liquid to the reagent container of the oscillating and rotating mechanism 2; the liquid outlet of the second auxiliary liquid adding device 7 is located above the detection disk mechanism 4, for adding the second auxiliary liquid to the analysis cell 42 of the detection disk mechanism 4. The first auxiliary liquid can be used to dilute the reagent; the second auxiliary liquid can be used to activate the reagent to improve the detection effect.

[0080] In a specific embodiment, the working process of the intelligent heavy metal detector provided by the present invention is as follows: by operating the switch on the outer shell, the internal mechanisms are reset, and the rotating tray 28 rotates a reagent container to the container positioning member 15, and then the electromagnetic push-pull valve 11 is automatically opened, so that the push-pull plate 13 retracts to open the feeding port, and the indicator light is on, prompting the staff to add a quantitative sample into the hopper 14. After the staff confirms that the feeding is completed by operating the button, the linear module 12 drives the container positioning member 15 to move downward and starts weighing. After weighing, the linear module 12 drives the container positioning member 15 to move upward, so that the weighed reagent container docks with the rotating tray 28; thereafter, the second motor 27 works to drive the rotating tray The tray 28 rotates, allowing the next reagent container to reach the position for adding and weighing, and the light comes on again to prompt adding again, and the above operation is repeated until the staff confirms that the adding and weighing of all the required reagent containers are completed by operating the button; next, the plunger pump of the pumping mechanism 5 controls the first auxiliary liquid adding device 6 to automatically add the first auxiliary liquid to the reagent container below, and by rotating the rotating tray 28, all the required reagent containers are added with the first auxiliary liquid; thereafter, the first motor 21 works and starts to perform rotary oscillation, so that the test agent and the first auxiliary liquid are fully mixed, and then automatically stand for a certain period of time after the oscillation; next, the multi-way reversing valve of the pumping mechanism 5 starts to switch the channel, and the plunger pump works to extract the sample that has been placed still. The sample liquid is added to the analysis pool 42 of the detection disk 41 through the lifting sampling part 44. Every time the sample liquid in a test tube container is extracted, the multi-way reversing valve needs to switch the clean water channel to automatically clean the system and recycle the cleaned water; after adding four channels, the rotating table 43 rotates to rotate the analysis pool 42 with four channels of sample liquid to the position of adding the second auxiliary liquid, and the plunger pump controls the second auxiliary liquid adding device 7 to add the second auxiliary liquid to the analysis pool 42 for activation, and then rotates to the position below the detection head module; the lifting detection head mechanism 3 works, the first stepper motor 33 works, and controls the lifting gear 34 to rotate. Because the lifting gear 34 and the rack 35 are engaged with each other, the lifting gear 34 and the crossbeam 32 are integrally connected. The vertical frame 31 and the rack 35 move downward, driving the detection head module to move downward, so that the four electrode heads 313 are respectively extended into the four-channel analysis pool 42 for activation detection. During the detection, the second stepper motor 36 controls the driving gear 38 to rotate and drives the driven gear 39 to rotate, so that each electrode head 313 rotates accordingly, and the slip ring 310 is not selected accordingly, and the detection information is transmitted to the circuit board of the heavy metal detector; after the detection is completed, the detection head module rises to a certain position, the detection results are output and a report is printed, the electrode head 313 is pulled out and replaced with a new electrode head 313, the rotating table 43 rotates, and the liquid in the test tube container that has not been tested is extracted into the analysis pool 42, and the above actions are repeated until all the test samples are completed.

[0081] In summary, the intelligent heavy metal detector provided by the present invention can automatically perform most operations in the heavy metal detection process, which is very convenient, greatly reduces the workload of staff, and improves detection efficiency and accuracy; and has a high degree of integration and saves space.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be covered by the scope of the claims of the present invention.

Claims

1. An intelligent heavy metal detector, characterized in that: It comprises a shell and a central control module installed in the shell, a sample adding and weighing mechanism (1), an oscillating and rotating mechanism (2), a lifting and lowering detection head mechanism (3), a detection plate mechanism (4) and a pumping mechanism (5); The central control module is used to control the intelligent operation of the intelligent heavy metal detector; The shell is provided with a feeding port, and the feeding port corresponds to the upper opening of the sample adding and weighing mechanism (1). The sample adding and weighing mechanism (1) is used to allow the test agent to be added to the reagent container inside the shell, and to weigh the reagent container after the sample addition is completed; The oscillating and rotating mechanism (2) is provided with a plurality of reagent containers, and the oscillating and rotating mechanism (2) is used to make the plurality of reagent containers rotate in sequence to positions corresponding to the sample adding and weighing mechanism (1), so as to complete the sample adding of the plurality of reagent containers respectively; The oscillating and rotating mechanism (2) is also used to oscillate and place the reagents in the multiple reagent containers after the addition of the samples. The pumping mechanism (5) is used to pump the processed reagent in the reagent container into the detection disk mechanism (4); The lifting detection head mechanism (3) cooperates with the detection disk mechanism (4) to complete the heavy metal detection of the reagent and output the detection result through the central control module; The pumping mechanism (5) is also used to extract the reagent after the test is completed; The detection disk mechanism (4) includes a plurality of analysis cells (42); The lifting detection head mechanism (3) comprises a lifting module and a detection head module; The lifting module comprises a vertical frame (31), a crossbeam (32), a first stepper motor (33), a lifting gear (34) and a rack (35); The straight frame (31) is fixed on the bottom plate (8) of the housing; A slide rail structure is formed on the straight frame (31), and a sliding structure matching the slide rail structure is formed at one end of the crossbeam (32); Furthermore, the first stepper motor (33) and the lifting gear (34) are fixed at the end of the crossbeam (32), the rack (35) is fixed on the straight frame (31) in the longitudinal direction, the lifting gear (34) and the rack (35) are meshed with each other, and the first stepper motor (33) is used to control the rotation of the lifting gear (34), thereby driving the crossbeam (32) as a whole to slide up and down relative to the straight frame (31); The detection head module is fixedly arranged on the crossbeam (32) so as to be able to move up and down together with the crossbeam (32); The detection head module comprises a plurality of electrode heads (313), the detection head module is located above the detection disk mechanism (4), and the electrode heads (313) can extend into the analysis pool (42) to complete the detection; The detection head module comprises a housing, a second stepper motor (36), a driving gear (38) and a plurality of collection components; the housing comprises an outer cover (311) and a plurality of connection structures for realizing the connection and fixation of various components in the detection head module, and the housing is fixedly connected to the crossbeam (32); the second stepper motor (36) is used to control the rotation of the driving gear (38); each collection component comprises an electrode socket (314), an electrode head (313), a driven gear (39), a collection plate (37) and a slip ring (310); in each collection component, the driven gear (39) is meshed with the driving gear (38), or meshed with other driven gears ( 39) are meshed, so that each driven gear (39) can rotate with the rotation of the driving gear (38); the collection board (37) is installed at the upper end of the driven gear (39), the electrode socket (314) is installed at the lower end of the driven gear (39), and the electrode head (313) is detachably installed on the electrode socket (314); the electrode head (313) passes through the bottom of the shell and extends to the lower end, and is used to obtain the collection signal; the slip ring (310) is located above the collection board (37), the lower lead of the slip ring (310) is electrically connected to the corresponding collection board (37), and the upper lead is electrically connected to the circuit board of the heavy metal detector; The sample adding and weighing mechanism (1) comprises a stand (17), a linear module (12), a weighing sensor (16), a connecting plate (18), a container positioning member (15) and a feeding bin (14); The stand (17) is fixed on the bottom plate (8) of the housing; The linear module (12) is mounted on the side of the stand (17), and the connecting plate (18) is mounted on the linear module (12). The connecting plate (18) can move up and down under the control of the linear module (12); The weighing sensor (16) is fixedly mounted on the connecting plate (18), and the container positioning member (15) is mounted above the weighing sensor (16); The feeding bin (14) is installed at the top of the stand (17), the feeding bin (14) is a funnel-shaped structure, the upper end of the feeding bin (14) is located at the feeding port on the shell, and the lower end of the feeding bin (14) is facing the container positioning member (15); The container positioning member (15) is used to place the sample container thereon and define the position of the sample container, and the container positioning member (15) can move up and down along with the connecting plate (18); The oscillating and rotating mechanism (2) comprises an oscillating module and a rotating module; The oscillation module comprises a first motor (21), a first rotating shaft (214), a plurality of eccentric shafts (22), a base (210), a fixed connecting body and a movable connecting plate (211); The base (210) is fixed on the bottom plate (8) of the housing; The rotating module comprises a second motor (27), a second rotating shaft (221) and a rotating tray (28); the second motor (27) is used to control the rotating tray (28) to rotate via the second rotating shaft (221); and the rotating module is entirely located above the movable connecting plate (211); The first motor (21) is used to control the rotation of the first rotating shaft (214), and the first rotating shaft (214) is fixedly connected to the movable connecting plate (211); The fixed connection body is fixedly connected to the base (210); both the fixed connection body and the base (210) are hollow structures, and the hollow area formed is used for the first motor (21), the first rotating shaft (214) and the movable connecting plate (211) to pass through the entire structure and provide a certain movement space; The upper and lower ends of the multiple eccentric shafts (22) are respectively fixedly connected to the movable connecting plate (211) and the fixed connecting body, and the multiple eccentric shafts (22) are used to convert the rotation of the first rotating shaft (214) into a rotary oscillating motion, thereby driving the movable connecting plate (211) and the rotating module above to perform a rotary oscillating motion as a whole.

2. The intelligent heavy metal detector according to claim 1, characterized in that: The sample adding and weighing mechanism (1) also includes a push-pull plate (13) and an electromagnetic push-pull valve (11) installed next to the feeding bin (14); the push-pull plate (13) is used to open or close the feeding port of the shell under the control of the electromagnetic push-pull valve (11); and a spacer is also provided on the inner side of the container positioning member (15).

3. The intelligent heavy metal detector according to claim 1, characterized in that: The rotating module also includes a mounting frame (220), a rotating partition plate (212), a tray support (222) and a limit switch (24); The bottom end of the mounting frame (220) is fixed on the movable connecting plate (211), the second motor (27) is fixed on the mounting frame (220), the second rotating shaft (221) is fixedly connected to the rotating partition plate (212), the tray support (222) is fixed above the rotating partition plate (212), the tray support (222) is fixedly connected to the rotating tray (28), and the limit switch (24) is installed on the mounting frame (220) and is located next to the rotating partition plate (212); The rotating tray (28) is provided with a plurality of container receiving portions along the circumferential direction for placing reagent containers; the rotating partition plate (212) is provided with a plurality of triggering portions along the circumferential direction for triggering the limit switch (24), so that when the rotating partition plate (212) rotates a certain angle and triggers the limit switch (24), the second motor (27) stops working, thereby controlling the rotation angle of the rotating tray (28).

4. The intelligent heavy metal detector according to claim 3 is characterized in that: The rotating module further comprises a container support plate (218), the container support plate (218) being a hollow structure, and the hollow area of ​​the container support plate (218) is used for setting the mounting frame (220), the container support plate (218) is located below the rotating tray (28), and the container support plate (218) does not rotate with the rotating tray (28); A through hole (219) is provided on the container support plate (218), and the size of the through hole (219) enables the reagent container in the container receiving portion to pass through, and each reagent container can reach the through hole (219) through the rotation of the rotating tray (28); The through hole (219) is located between the lower port of the feeding bin (14) and the container positioning member (15), so that the reagent container reaching the through hole (219) can cooperate with the sample adding and weighing mechanism (1) to complete sample adding and weighing.

5. The intelligent heavy metal detector according to claim 1, characterized in that: The detection plate mechanism (4) further comprises a detection plate (41), a rotating platform (43) and a lifting sampling member (44); The base of the rotating platform (43) is fixed on the bottom plate (8) of the housing, the detection disk (41) is installed above the rotating platform (43), and the rotating platform (43) is used to control the overall rotation of the detection disk (41); A plurality of analysis cells (42) are arranged on the upper surface of the detection disk (41); The lifting sampling member (44) and the detection head module are arranged on different sides above the detection plate (41); The lifting sampling member (44) is also connected to the pumping mechanism (5). The lifting sampling member (44) is used to extend into or leave the analysis pool (42) by automatically lifting and lowering, and under the control of the pumping mechanism (5), pump the reagent to be tested into the analysis pool (42) or extract the reagent after testing.

6. The intelligent heavy metal detector according to claim 1, characterized in that: The pumping mechanism (5) comprises a plurality of plunger pumps and a plurality of multi-channel solenoid valves, wherein the plunger pumps are used to control liquid addition and liquid discharge, and the multi-channel solenoid valves are used to switch the working channels of the corresponding plunger pumps to switch the functions of the plunger pumps.

7. The intelligent heavy metal detector according to claim 1, characterized in that: It also comprises a first auxiliary liquid adding device (6) and a second auxiliary liquid adding device (7); the liquid inlet ends of the first auxiliary liquid adding device (6) and the second auxiliary liquid adding device (7) are both connected to the pumping mechanism (5); and the liquid outlet end of the first auxiliary liquid adding device (6) is located above the oscillating rotating mechanism (2) and is used to add the first auxiliary liquid to the reagent container of the oscillating rotating mechanism (2); The liquid outlet end of the second auxiliary liquid adding device (7) is located above the detection disk mechanism (4) and is used to add the second auxiliary liquid into the analysis pool (42) of the detection disk mechanism (4).

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