Heavy metal detector

Abstract

The utility model discloses a heavy metal detector which comprises a rack, a first processing space and a second processing space are arranged on the rack, and the first processing space and the second processing space are arranged up and down; a stirring and rotating mechanism; a detection rotation mechanism; a sample adding and weighing module; the crushing and stirring module is used for crushing the sample and stirring and mixing the sample and the reagent; a liquid adding and transferring module; a detection head module; a pumping device; one of the liquid adding and transferring modules is arranged in the first treatment space, and the other liquid adding and transferring module, the detection rotating mechanism and the detection head module are arranged in the second treatment space. The heavy metal detector occupies less desktop space and is beneficial to arrangement of instruments in a laboratory.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical detection equipment, in particular to a heavy metal detector. Background Art

[0002] The heavy metal detector generally includes two trays for placing test tubes, and the functional modules such as the liquid adding module, the liquid transfer module and the detection module are arranged around the two trays. The two trays of the heavy metal detector in the prior art are usually arranged on the left and right, resulting in a large length and width of the heavy metal detector, which requires more desktop area and is not conducive to the effective use of the desktop space in the laboratory. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to provide a heavy metal detector to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

[0004] The solution of the utility model to solve the technical problem is:

[0005] Heavy metal detector, including:

[0006] A frame, wherein the frame is provided with a first processing space and a second processing space, the first processing space and the second processing space are arranged up and down, the first processing space is provided with a feeding port, and the second processing space is provided with a detection port;

[0007] A stirring and rotating mechanism, wherein a plurality of stirring test tubes are installed on the stirring and rotating mechanism; the stirring and rotating mechanism is used to oscillate and statically treat the stirring test tubes; the stirring and rotating mechanism is provided with a first station, a second station and a third station, and the stirring and rotating mechanism drives the stirring test tubes to pass through the first station, the second station and the third station in sequence;

[0008] A detection rotating mechanism, wherein the detection rotating mechanism is equipped with a plurality of detection test tubes; the detection rotating mechanism is provided with a fourth station and a detection station;

[0009] A sample adding and weighing module is arranged corresponding to the first station, and the sample adding and weighing module is arranged below the feeding port;

[0010] A crushing and stirring module is arranged corresponding to the second station, and the crushing and stirring module is used to crush the sample and stir and mix the sample and the reagent;

[0011] Liquid adding and liquid transferring modules, the number of the liquid adding and liquid transferring modules is set to at least two, and at least two of the liquid adding and liquid transferring modules are respectively arranged at the third station and the fourth station;

[0012] A detection head module, wherein the detection head module is arranged at the detection station;

[0013] a pumping device for pumping liquid into or out of the detection tube of the stirring tube;

[0014] The stirring and rotating mechanism, the sample adding and weighing module, the crushing and stirring module, and one of the liquid adding and pipetting modules are arranged in the first processing space, and the other liquid adding and pipetting module, the detection rotating mechanism, and the detection head module are arranged in the second processing space.

[0015] Through the above technical solution, the present invention arranges the stirring and rotating mechanism, the sample adding and weighing module, the crushing and stirring module, and one of the liquid adding and pipetting modules in the first processing space, and the other liquid adding and pipetting module, the detection rotating mechanism, and the detection head module in the second processing space. And the two processing spaces are arranged up and down, so that the desktop space occupied by the heavy metal detector is less, which is conducive to the arrangement of instruments in the laboratory.

[0016] As a further improvement of the above technical solution, the crushing and stirring module includes:

[0017] Crushing upper and lower drive device;

[0018] A crushing installation structure, wherein the crushing up and down driving device drives the crushing installation structure to move up and down;

[0019] A pulverizing drive device fixedly mounted on the pulverizing mounting structure, the pulverizing drive device being mounted on the pulverizing up and down drive device, the pulverizing up and down drive device driving the pulverizing drive device to move up and down;

[0020] A crushing cutter head is installed at the output end of the crushing driving device, and the crushing driving device drives the crushing cutter head to rotate.

[0021] As a further improvement of the above technical solution, the crushing and mixing module also includes: a first liquid outlet pipe, which is fixed to the lower end of the crushing mounting structure; the number of the first liquid outlet pipes is at least two, and at least two of the first liquid outlet pipes are respectively arranged on both sides of the crushing blade head.

[0022] As a further improvement of the above technical solution, the crushing cutter head rotates around the crushing shaft, and the crushing cutter head is provided with a cutter head center axis, and the cutter head center axis is inclined relative to the crushing shaft.

[0023] As a further improvement of the above technical solution, the stirring tube is provided with a plurality of spoiler protrusions, and the plurality of spoiler protrusions are evenly arranged on the inner wall of the stirring tube.

[0024] As a further improvement of the above technical solution, the liquid adding and pipetting module includes a liquid adding and pipetting nozzle, and the liquid adding and pipetting nozzle is provided with a cleaning liquid outlet hole, and the cleaning liquid outlet hole is annular and surrounds the liquid adding and pipetting nozzle.

[0025] As a further improvement of the above technical solution, the liquid adding pipetting module is also provided with a pipetting hole and a sewage discharge pipetting hole, the openings of the pipetting hole and the sewage discharge pipetting hole are both arranged below the cleaning outlet hole; the opening of the sewage discharge pipetting hole is arranged below the opening of the pipetting hole.

[0026] As a further improvement of the above technical solution, it also includes a temperature detection module, and the temperature detection module is arranged beside the detection rotation mechanism.

[0027] As a further improvement of the above technical solution, the temperature detection module is provided with a test tube side;

[0028] The temperature detection module comprises:

[0029] Temperature detection mounting base;

[0030] A temperature detection probe fixed to the temperature detection mounting seat, wherein the temperature detection probe is configured as a contact temperature sensor and is provided with a detection end, wherein the detection end faces the test tube side;

[0031] The proximity drive structure has an output end fixed to the temperature detection mounting seat, and the proximity drive structure is used to drive the temperature detection mounting seat to move along the temperature detection direction.

[0032] As a further improvement of the above technical solution, the detection end is provided with an arc-shaped concave surface.

[0033] The beneficial effect of the utility model is that it is beneficial to the arrangement of instruments in the laboratory.

[0034] The utility model is used in the technical field of electrochemical detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0036] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0037] Figure 2It is a schematic diagram of the overall structure of the main components of the embodiment of the utility model;

[0038] Figure 3 This is a schematic diagram of the overall structure of the sample adding and weighing module of the embodiment of the utility model;

[0039] Figure 4 This is a schematic diagram of the overall structure of the crushing and stirring module of the embodiment of the utility model;

[0040] Figure 5 It is a half-section structural schematic diagram of a crushing and stirring module according to an embodiment of the utility model;

[0041] Figure 6 It is a schematic diagram of the overall structure of the liquid adding and liquid transfer module of an embodiment of the utility model;

[0042] Figure 7 This is a schematic diagram of the overall structure of the liquid adding pipette nozzle of an embodiment of the utility model;

[0043] Figure 8 It is a schematic diagram of the overall structure of the detection head module of an embodiment of the utility model;

[0044] Fig. 9 It is a schematic diagram of the overall structure of the temperature detection module of an embodiment of the utility model;

[0045] Fig.10 This is a schematic diagram of the overall structure of the temperature detection module of the embodiment of the utility model from another angle;

[0046] Fig.11 It is a partial structural schematic diagram of an embodiment of the utility model;

[0047] Fig.12 It is a half-section structural schematic diagram of a stirring test tube according to an embodiment of the utility model. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0049] Reference Figures 1 to 12The heavy metal detector includes a frame 100, a stirring and rotating mechanism, a detection rotating mechanism, a sample adding and weighing module 700, a crushing and stirring module 500, a liquid adding and pipetting module 600, and a pumping device 800.

[0050] The stirring and rotating mechanism includes a stirring and rotating driving device and a stirring and mixing disk 400. The stirring and mixing disk 400 is installed on the frame 100, and a plurality of detection test tube insertion holes 210 are opened on the stirring and mixing disk 400, and the plurality of detection test tube insertion holes 210 are arranged at equal intervals on the stirring and mixing disk 400.

[0051] Specifically, the stirring and mixing disk 400 is connected to the frame 100 through a stirring and rotating driving device, which can drive the stirring and mixing disk 400 to vibrate and rotate the stirring and mixing disk 400. The stirring and rotating mechanism is used to rotate the multiple stirring test tubes 410 to different stations by rotating.

[0052] The stirring and rotating driving device includes an oscillation module and a rotation module. The stirring and rotating driving device is a device commonly used in heavy metal detectors. The specific structure of the stirring and rotating driving device is not described here. Those skilled in the art can select the specific structure of the oscillation module and the rotation module according to actual needs.

[0053] The stirring and mixing disk 400 is fixed with a plurality of first position positioning pieces and a second position positioning piece. The plurality of first position positioning pieces are arranged at equal intervals around the rotation axis of the stirring and mixing disk 400, and the first position positioning pieces are arranged one by one corresponding to the detection test tube insertion holes 210. Specifically, in the present embodiment, the first position positioning piece and the second position positioning piece are both fixed to the lower end of the stirring and mixing disk 400. The second position positioning piece is provided with a detection slit.

[0054] The frame 100 is fixed with a first Hall sensor and a second Hall sensor. The first Hall sensor cooperates with a plurality of first position positioning pieces to realize angle detection of the mixing and stirring disk 400. The first Hall sensor sends a signal every time the mixing and stirring disk 400 rotates a certain angle. The second Hall sensor cooperates with the second position positioning piece. When the mixing and stirring disk 400 rotates one circle, the second Hall sensor sends a signal. Specifically, the cooperation of the Hall sensor and the position positioning piece to detect the rotation of the turntable is a conventional technology in the art, and its principle and detailed implementation process will not be repeated here.

[0055] A plurality of stirring tubes 410 are inserted on the stirring and mixing disk 400 , and the plurality of stirring tubes 410 are arranged equidistantly around the circumference of the rotation axis of the stirring and mixing disk 400 .

[0056] Specifically, in this embodiment, a plurality of flow-disturbing protrusions 411 are fixed to the inner wall of the stirring tube 410 , and the plurality of flow-disturbing protrusions 411 are evenly arranged on the inner wall of the stirring tube 410 .

[0057] Specifically, in this embodiment, the spoiler protrusion 411 is set to a strip structure, the spoiler protrusion 411 extends straightly in the up and down directions, the number of the spoiler protrusions 411 is set to three, and the three spoiler protrusions 411 are arranged in a circle around the central axis of the stirring tube 410. In other embodiments, the number of spoiler protrusions 411 can also be set to two, four, etc., and technical personnel in this field can select the number of spoiler protrusions 411 according to actual conditions.

[0058] In other embodiments, the spoiler protrusion 411 may be set as a point structure, and the strip structure may be set as a structure extending spirally along the central axis of the stirring tube 410. Those skilled in the art may select the specific structure of the spoiler protrusion 411 according to actual needs.

[0059] By providing a plurality of spoiler protrusions 411, more eddies are generated when the liquid in the stirring test tube 410 moves relative to the stirring test tube 410, thereby making the flow of the liquid in the stirring test tube 410 more turbulent, thereby improving the mixing uniformity of the liquid in the stirring test tube 410 (including the auxiliary liquid) and the crushed sample, which is more conducive to detection.

[0060] The sample adding weighing module 700 is arranged at the first station. Specifically, the sample adding weighing module 700 comprises a weighing mounting frame, a weighing up and down driving device, a weighing mounting structure 740, a weighing sensor, and a test tube lifting member 750. The weighing mounting frame is fixedly mounted on the frame 100.

[0061] The weighing up and down driving device includes: a weighing up and down driving member 710 , a weighing up and down driving screw 720 and a weighing up and down driving seat 730 .

[0062] The weighing upper and lower driving member 710 is fixedly mounted on the weighing mounting frame, both ends of the weighing upper and lower driving screw 720 are rotatably connected to the weighing mounting frame, and the weighing upper and lower driving seat 730 is threadedly connected to the weighing upper and lower driving screw 720. Specifically, in this embodiment, the weighing upper and lower driving member 710 is configured as a rotary motor. In other embodiments, the weighing upper and lower driving member 710 can also be configured as other conventional rotary driving devices. Those skilled in the art can select the specific structure of the weighing driving device according to actual needs.

[0063] The weighing installation structure 740 is fixedly connected to the weighing upper and lower driving seats 730 .

[0064] The test tube lifting member 750 and the weighing sensor are both installed on the weighing installation structure 740. The test tube lifting member 750 is connected to the weighing sensor. When the test tube lifting member 750 lifts the test tube, the weighing sensor works to measure the weight of the test tube and the liquid in the test tube.

[0065] The crushing and stirring module 500 is disposed at the second station.

[0066] Specifically, the crushing and mixing module 500 includes a crushing mounting frame 510 , a crushing upper and lower driving device 520 , a crushing mounting structure 530 , a crushing driving device 540 and a crushing cutter head 550 .

[0067] Specifically, the crushing mounting frame 510 is fixedly mounted on the frame 100. The crushing upper and lower driving device 520 is mounted on the crushing mounting frame 510. Specifically, in this embodiment, the crushing upper and lower driving device 520 includes a crushing upper and lower driving member 521, a crushing upper and lower driving screw 522 and a crushing upper and lower driving seat 523. The crushing upper and lower driving member 521 is fixedly mounted on the crushing mounting frame 510, both ends of the crushing upper and lower driving screw 522 are rotatably connected to the crushing mounting frame 510, and the crushing upper and lower driving seat 523 is threadedly connected to the crushing upper and lower driving screw 522. Specifically, in this embodiment, the crushing upper and lower driving member 521 is set as a rotary motor. In other embodiments, the crushing upper and lower driving member 521 can also be set as other conventional rotary driving devices. Those skilled in the art can select the specific structure of the crushing driving device 540 according to actual needs. In other embodiments, the crushing upper and lower driving device 520 can also be set as a linear motor. Those skilled in the art can select the specific structure of the crushing upper and lower driving device 520.

[0068] The crushing installation structure 530 is fixedly connected to the crushing upper and lower driving seats 523 .

[0069] The pulverizing drive device 540 is fixedly mounted on the pulverizing mounting structure 530. The pulverizing drive device 540 can move in the up and down directions along with the pulverizing upper and lower drive seats 523 and the pulverizing mounting structure 530. Specifically, in this embodiment, the pulverizing drive device 540 is configured as a rotary motor. In other embodiments, other conventional rotary drive structures may also be used. Those skilled in the art may select the specific structure of the pulverizing drive device 540 according to actual needs.

[0070] A crushing drive shaft 541 is fixed to the output end of the crushing drive device 540, and a crushing blade head 550 is fixedly installed at the lower end of the crushing drive shaft 541. By providing the crushing drive shaft 541, the distance between the crushing blade head 550 and the crushing drive device 540 is increased, so that more structures can be provided between the crushing blade head 550 and the crushing drive device 540, which is beneficial to the layout of various components of the crushing and mixing module 500.

[0071] Specifically, in this embodiment, the crushing cutter head 550 is fixedly installed on the lower end of the crushing transmission shaft 541 by screws, and the crushing cutter head 550 and the crushing transmission shaft 541 are connected by screws, so that the crushing cutter head 550 can be replaced at any time to ensure that the crushing and mixing module 500 can operate normally.

[0072] Specifically, the crushing drive device 540 drives the crushing transmission shaft 541 and the crushing cutter head 550 to rotate around the crushing shaft 542. The crushing cutter head 550 is provided with a cutter head center axis 551. In this embodiment, the cutter head center axis 551 is arranged to be relatively inclined with the crushing shaft 542. The cutter head center axis 551 is arranged to be inclined relative to the crushing shaft 542, so that the crushing cutter head 550 has a larger range when rotating, which can play a better crushing and stirring role. In other embodiments, the cutter head center axis 551 can also be arranged to coincide with or be parallel to the crushing shaft 542. Those skilled in the art can select the angle of the cutter head center axis 551 according to actual needs.

[0073] Specifically, in this embodiment, the crushing cutter head 550 adopts a blade-type blade structure. Specifically, in this embodiment, the number of crushing cutter heads 550 is set to two, and the two crushing cutter heads 550 are arranged along the cutter head center axis 551. In other embodiments, the crushing cutter head 550 can also be set to a diamond blade structure, a square blade structure or a four-petal structure, and those skilled in the art can select the specific structure of the crushing cutter head 550.

[0074] In other embodiments, the number of the crushing blade heads 550 may be set to one, three, four, etc. If the number of the crushing blade heads 550 is set to three, four, etc., the plurality of crushing blade heads 550 are arranged along the blade center axis 551 or the crushing shaft 542, and the plurality of crushing blade heads 550 are provided to further increase the crushing efficiency of the crushing and stirring module 500 of the present solution.

[0075] Specifically, in the present embodiment, a crushing upper and lower guide assembly is provided between the crushing upper and lower driving seat 523 and the crushing mounting frame 510. Specifically, in the present embodiment, the crushing upper and lower guide assembly includes a crushing guide seat 561 and a crushing guide rail 562. Specifically, the crushing guide rail 562 is fixedly installed on the crushing mounting frame 510, and the crushing guide rail 562 extends in the up and down direction. The crushing guide seat 561 and the crushing guide rail 562 are slidably connected.

[0076] By setting up the upper and lower grinding guide components, the upper and lower grinding drive components 521 and the grinding installation structure 530 can be guided so that the upper and lower grinding drive seats 523 and the grinding installation structure 530 can only move in the up and down directions but cannot make rotational movements, thereby ensuring the up and down movement of the structures such as the upper and lower grinding drive components 521 and the grinding installation structure 530.

[0077] Specifically, in this embodiment, the crushing and stirring module 500 also includes a first liquid outlet pipe 570, which is arranged at the lower end of the crushing mounting structure 530. The first liquid outlet pipe 570 is connected to the plunger pump inside the heavy metal detector through a connecting pipe, and the plunger pump injects the first auxiliary liquid into the stirring tube 410 through the first liquid outlet pipe 570.

[0078] Specifically, in this embodiment, the number of the first liquid outlet pipes 570 is set to two, and the two first liquid outlet pipes 570 are respectively arranged on both sides of the pulverizing transmission shaft 541 .

[0079] The number of the first liquid outlet pipes 570 is set to two, and the two first liquid outlet pipes 570 can add the first auxiliary liquid and the ordinary liquid into the stirring tube 410 respectively.

[0080] Specifically, in this embodiment, the heavy metal detector is further provided with a test tube anti-lifting structure 580. Specifically, in this embodiment, the test tube anti-lifting structure 580 is set as an electric push rod. In other embodiments, the test tube anti-lifting structure 580 can also be set as other structures such as a clamp to achieve temporary fixation of the stirring test tube.

[0081] Before the crushing and stirring module 500 is ready to crush and stir the sample in the stirring tube 410, the anti-tube lifting structure 580 works so that the front end of the anti-tube lifting structure 580 abuts against the stirring tube 410. The anti-tube lifting structure 580 can reduce the vibration of the stirring tube 410 during the crushing and stirring process.

[0082] After the crushing and stirring steps are completed, the crushing blade head rises. During the rising process of the crushing blade head, since the front end of the anti-test tube lifting structure 580 abuts against the stirring test tube 410, the anti-test tube lifting structure 580 can prevent the stirring test tube 410 from being lifted up by the crushing blade head to ensure the normal progress of subsequent tests.

[0083] After the crushing blade head rises and completely leaves the stirring tube 410, the anti-tube lifting structure 580 works, and the end of the anti-tube lifting structure 580 is away from the stirring tube 410, thereby preventing the anti-tube lifting structure 580 from obstructing the stirring tube 410 during transportation of the stirring tube.

[0084] The anti-test tube lifting structure 580 is fixedly installed at the lower end of the crushing and mixing module 500. In other embodiments, the anti-test tube lifting structure 580 can also be fixed to the frame and arranged below the crushing and mixing module.

[0085] Specifically, in this embodiment, the number of the liquid adding and liquid transferring modules 600 is set to two, and the two liquid adding and liquid transferring modules 600 are respectively set to be a first liquid adding module and a second liquid adding module. The first liquid adding module is set at the third station.

[0086] The liquid adding and pipetting module 600 includes: a liquid adding mounting frame 610 , a liquid adding up and down driving device 620 , a liquid adding mounting structure 630 and a liquid adding and pipetting nozzle 640 .

[0087] Specifically, the liquid adding mounting bracket 610 is fixedly mounted on the frame 100 .

[0088] The liquid adding up and down driving device 620 is installed on the liquid adding mounting frame 610. Specifically, in the present embodiment, the liquid adding up and down driving device 620 includes a liquid adding up and down driving member 621, a liquid adding up and down driving screw 622 and a liquid adding up and down driving seat 623. The liquid adding up and down driving member 621 is fixedly installed on the liquid adding mounting frame 610, both ends of the liquid adding up and down driving screw 622 are rotatably connected to the liquid adding mounting frame 610, and the liquid adding up and down driving seat 623 is threadedly connected to the liquid adding up and down driving screw 622. Specifically, in the present embodiment, the liquid adding up and down driving member 621 is configured as a rotary motor. In other embodiments, the liquid adding up and down driving member 621 can also be configured as other conventional rotary driving devices. Those skilled in the art can select the specific structure of the liquid adding driving device according to actual needs.

[0089] The liquid adding installation structure 630 is fixedly connected to the liquid adding upper and lower driving seats 623 .

[0090] In other embodiments, the liquid adding up and down driving device 620 may also be configured as a linear motor, and those skilled in the art may select the specific structure of the liquid adding up and down driving device 620 .

[0091] The liquid adding installation structure 630 is fixedly installed on the liquid adding upper and lower driving seat 623 .

[0092] The liquid adding pipette nozzle 640 is fixedly mounted on the lower end of the liquid adding mounting structure 630. Specifically, in this embodiment, the liquid adding pipette nozzle 640 is connected to the liquid adding mounting structure 630 through a thread. The liquid adding pipette nozzle 640 is arranged to be connected to the liquid adding mounting structure 630 through a thread, so that the liquid adding pipette nozzle 640 can be quickly replaced when it is damaged.

[0093] The liquid adding pipetting nozzle 640 is provided with a tube passing through hole 641 .

[0094] Specifically, in this embodiment, the liquid adding pipette nozzle 640 is provided with a cleaning liquid outlet hole 642. Specifically, in this embodiment, the cleaning liquid outlet hole 642 is arranged in an annular shape. The cleaning liquid outlet hole 642 is connected to the plunger pump through a cleaning liquid pipeline, and the cleaning liquid pipeline passes through the liquid adding pipette nozzle 640 from the pipe penetration hole 641.

[0095] When the stirring tube 410 needs to be cleaned, the plunger pump pumps the cleaning liquid out from the cleaning outlet hole 642. The cleaning outlet hole 642 is set to be annular so that the cleaning liquid spreads in a circular shape when sprayed out from the liquid adding pipette nozzle 640, thereby comprehensively cleaning the inner wall of the stirring tube 410, which is beneficial to improving the cleaning effect of the stirring tube 410.

[0096] In other embodiments, the cleaning liquid outlet hole 642 can also be set to a circular hole structure, and the number of the cleaning liquid outlet holes 642 can be set to multiple, and the multiple cleaning liquid outlet holes 642 are arranged in a circular array around the central axis of the liquid adding pipette nozzle 640, so that the cleaning liquid can be sprayed from the multiple cleaning liquid outlet holes 642 into the stirring test tube 410, thereby performing a more comprehensive cleaning of the inner wall of the stirring test tube 410, thereby improving the cleaning effect of the stirring test tube 410.

[0097] Specifically, in this embodiment, a reinforcing connection block 643 is provided in the cleaning liquid outlet hole 642, and the reinforcing connection block 643 connects two side walls of the cleaning liquid outlet hole 642 that are arranged opposite to each other in the vertical direction. By providing the reinforcing connection block 643, the overall strength of the liquid adding pipette nozzle 640 can be improved, and the cleaning liquid outlet hole 642 can be prevented from being greatly deformed during long-term use, thereby preventing the cleaning liquid from being sprayed out due to the large deformation, thereby effectively ensuring the cleaning performance of the stirring test tube 410.

[0098] The liquid adding pipette nozzle 640 is provided with a pipette hole 644 , and the pipette hole 644 is connected to a first pipette pipe. The first pipette pipe passes through the pipe through hole 641 and out of the liquid adding pipette nozzle 640 . One end of the first pipette pipe away from the liquid adding pipette nozzle 640 is connected to a plunger pump.

[0099] The transfer hole 644 is used to extract the upper clear liquid in the stirring test tube 410, and then the upper clear liquid in the stirring test tube 410 is transported to the module of the next step through a plunger pump and other structures to complete the detection with other modules.

[0100] The addition pipetting nozzle 640 is provided with a drainage pipetting hole 645, which is connected to the plunger pump through a second pipetting pipe, and the second pipetting pipe passes through the pipe through hole 641 and out of the addition pipetting nozzle 640. The opening of the drainage pipetting hole 645 is arranged below the opening of the pipetting hole 644.

[0101] After cleaning the stirring tube 410 , the liquid in the stirring tube 410 is pumped out through the drainage pipetting hole 645 to complete the cleaning of the stirring tube 410 .

[0102] The liquid adding up and down driving device 620 drives the liquid adding installation structure 630 and the liquid adding up and down driving seat 623 to move downward, so that the liquid adding pipette nozzle 640 descends into the stirring test tube 410, and then the liquid is pumped by the plunger pump.

[0103] Specifically, in this embodiment, a liquid adding guide rail 651 and a liquid adding guide seat 652 are provided between the liquid adding mounting frame 610 and the liquid adding mounting structure 630 . The liquid adding guide rail 651 extends up and down, and the liquid adding guide rail 651 is relatively fixed to the liquid adding up and down driving device 620 .

[0104] Specifically, in this embodiment, the liquid adding guide rail 651 is fixedly mounted on the liquid adding mounting frame 610 by screws, and the liquid adding guide seat 652 is fixedly mounted on the liquid adding mounting structure 630. In other embodiments, the liquid adding guide rail 651 can also be fixedly mounted on the liquid adding mounting structure 630, and the liquid adding guide seat 652 can be fixedly mounted on the liquid adding mounting frame 610, and those skilled in the art can select the installation positions of the liquid adding guide rail 651 and the liquid adding guide seat 652.

[0105] The detection rotation mechanism includes a detection rotation drive member and a detection disk 200. Specifically, in the present embodiment, a Hall sensor and a detection sheet are also provided between the detection disk 200 and the frame 100, which will not be described in detail here. Specifically, in the present embodiment, the detection rotation drive member is set to a conventional rotating motor. In other embodiments, the detection rotation drive member can also be set to other conventional rotation drive devices. Those skilled in the art can select the rotation drive device according to actual needs. The detection disk 200 is a disc-shaped structure. The detection disk 200 is rotatably mounted on the frame 100. The detection disk 200 is fixedly connected to the output end of the detection rotation drive member, and the detection rotation drive member drives the detection disk 200 to rotate.

[0106] Specifically, the detection disk 200 is provided with a plurality of detection test tube insertion holes 210, which are arranged equidistantly around the rotation axis of the detection disk 200. During detection, the detection test tubes are inserted into the detection test tube insertion holes 210, and the rotation of the detection disk 200 can make the detection test tubes move to the bottom of the detection electrode 941 in turn to cooperate with the detection.

[0107] Specifically, in this embodiment, the detection plate 200 is further provided with a temperature detection hole 220, and the number of the temperature detection holes 220 is provided in plurality, and the plurality of temperature detection holes 220 are arranged in a one-to-one correspondence with the plurality of detection test tube insertion holes 210. One end of the temperature detection hole 220 is connected to the detection test tube insertion hole 210, and the other end of the temperature detection hole 220 is connected to the side wall of the detection plate 200.

[0108] The detection rotating mechanism is provided with a fourth station and a detection station. The second liquid adding module is provided at the fourth station. The second liquid adding module is provided with a second liquid adding nozzle, and the second liquid adding nozzle is provided with a cleaning liquid outlet hole 642 and a liquid extraction hole, and the cleaning liquid outlet hole 642 and the second liquid extraction hole are arranged flush. The second liquid extraction hole is used to extract the liquid in the detection test tube. Specifically, the temperature detection module 300 is arranged beside the detection disk 200. Specifically, the temperature detection module 300 includes a temperature detection mounting seat 310, a temperature detection probe 320 and a proximity drive structure 330.

[0109] The temperature detection mounting base 310 is mounted on the rack 100 , and the temperature detection mounting base 310 is slidably connected to the rack 100 . The temperature detection mounting base 310 can slide relative to the rack 100 along the temperature detection direction.

[0110] Specifically, in the present embodiment, the cross section of the temperature detection mounting seat 310 parallel to the horizontal plane is in the shape of a fan ring, and the temperature detection mounting seat 310 is configured as a fan ring block structure.

[0111] The driving structure 330 is fixedly installed on the frame 100, and the output end of the driving structure 330 is fixedly connected to the temperature detection mounting seat 310. Specifically, in the present embodiment, the driving structure 330 is configured as a linear cylinder. In other embodiments, the driving structure 330 can also be configured as a commonly used linear driving structure such as a linear motor, or a connecting rod structure can be used to drive the temperature detection mounting seat 310 to move in a straight line. Those skilled in the art can select the specific structure of the driving structure 330 according to actual needs.

[0112] The temperature detection probe 320 is fixedly mounted on the temperature detection mounting seat 310. Specifically, in this embodiment, the temperature detection probe 320 is fixedly connected to the temperature detection mounting seat 310 via a threaded structure. Specifically, the temperature detection probe 320 is configured as a contact temperature sensor.

[0113] The temperature detection probe 320 is provided with a detection end, and the detection end faces the test tube side. Specifically, in this embodiment, the detection end is provided with an arc-shaped concave surface 321.

[0114] By providing the arc-shaped concave surface 321 , the detection end can be more closely attached to the side wall of the detection test tube, thereby increasing the accuracy of the temperature detection probe 320 in detecting the temperature.

[0115] Specifically, in this embodiment, the peripheral edge of the detection end is provided with a chamfer. By providing the chamfer on the peripheral edge of the detection end, the sharp corner of the peripheral edge of the detection end can be reduced, thereby preventing the sharp corner from contacting the side wall of the detection test tube when the detection end is close to the detection test tube, effectively avoiding damage to the detection test tube caused by the sharp corner, thereby increasing the service life of the detection test tube.

[0116] Specifically, in this embodiment, the number of the temperature detection probes 320 is set to be multiple, and the multiple temperature detection probes 320 are arranged in an arc shape, and the arc center of the multiple temperature detection probes 320 arranged in an arc shape coincides with the center of the temperature detection mounting seat 310 .

[0117] The multiple temperature detection probes 320 can detect the temperatures of multiple detection test tubes at the same time, which can reduce the overall detection time of the heavy metal detector to a certain extent.

[0118] When it is necessary to perform temperature detection on the test tube, the temperature detection mounting seat 310 is driven by the driving structure 330 to move in the temperature detection direction, so that the temperature detection mounting seat 310 is close to the detection disk 200, and the temperature detection probe 320 can be inserted into the temperature detection hole 220. Since the temperature detection hole 220 is connected with the test tube jack 210, after the temperature detection probe 320 is inserted into the temperature detection hole 220, the detection end of the temperature detection probe 320 will eventually abut against the side wall of the test tube. The detection end of the temperature detection probe 320 abuts against the side wall of the test tube, which can realize temperature measurement of the middle part of the test tube, thereby reducing the temperature measurement error, which is beneficial to improving the accuracy of the detection result of the heavy metal detector.

[0119] Specifically, in this embodiment, a first guide block 311 is provided at the lower end of the temperature detection mounting seat 310 . The first guide block 311 is a long block structure and extends along the temperature detection direction.

[0120] The number of the first guide blocks 311 is set to be multiple. Specifically, in the present embodiment, the number of the first guide blocks 311 is set to two. The two first guide blocks 311 are respectively arranged at the two ends of the temperature detection mounting base 310. In other embodiments, the number of the first guide blocks 311 can also be set to three, four, five, etc. Those skilled in the art can select the number of the first guide blocks 311 according to actual needs.

[0121] Specifically, in this embodiment, the frame 100 is fixedly connected with a second guide block 110 , and the second guide block 110 extends along the temperature detection direction.

[0122] The number of the second guide blocks 110 is set to multiple, specifically, in the present embodiment, the number of the second guide blocks 110 is set to two, the two second guide blocks 110 are set in one-to-one correspondence with the two first guide blocks 311, and in the present embodiment, the two second guide blocks 110 are both set between the two first guide blocks 311, the side wall of the second guide block 110 abuts against the first guide block 311, and the second guide block 110 and the first guide block 311 can guide the temperature detection mounting seat 310 to avoid deflection during the movement of the temperature detection mounting seat 310. In other embodiments, the number of the second guide blocks 110 can also be set to three, four, five, etc., so that the second guide block 110 and the first guide block 311 are set in one-to-one correspondence. In other embodiments, it is also possible to slot in the middle of the second guide block 110, the first guide block 311 is set in the slot opened by the second guide block 110, and the first guide block 311 is connected to the second guide block 110 by sliding.

[0123] Specifically, in this embodiment, the temperature detection mounting base 310 is fixed with a plurality of detection liquid adding tubes 340, the number of which is the same as the number of the temperature detection probes 320, and the detection liquid adding tubes 340 are arranged in a one-to-one correspondence with the temperature detection probes 320, and the detection liquid adding tubes 340 are arranged above the temperature detection probes. The detection liquid adding tubes 340 are used to add the sample to be detected to the detection test tube. Compared with the previous solution of only setting a single liquid adding structure at a fixed position, this solution can avoid the detection plate 200 from frequently rotating and transporting the detection test tube to the bottom of the liquid adding structure to realize liquid addition, which can greatly improve the detection efficiency of the heavy metal detector.

[0124] The detection head module 900 is arranged at the detection station, and the detection head module 900 includes a detection mounting frame 910 , a detection upper and lower driving device 920 , a detection mounting structure 930 and a detection head assembly 940 .

[0125] Specifically, the detection mounting frame 910 is fixedly mounted on the frame 100 .

[0126] The detection upper and lower driving device 920 is installed on the detection mounting frame 910. Specifically, in the present embodiment, the detection upper and lower driving device 920 includes a detection upper and lower driving member 921, a detection upper and lower driving screw 922 and a detection upper and lower driving seat 923. The detection upper and lower driving member 921 is fixedly installed on the detection mounting frame 910, both ends of the detection upper and lower driving screw 922 are rotationally connected to the detection mounting frame 910, and the detection upper and lower driving seat 923 is threadedly connected to the detection upper and lower driving screw 922. Specifically, in the present embodiment, the detection upper and lower driving member 921 is set as a rotary motor. In other embodiments, the detection upper and lower driving member 921 can also be set as other conventional rotary driving devices. Those skilled in the art can select the specific structure of the detection driving device according to actual needs. The detection mounting structure 930 is fixedly connected to the detection upper and lower driving seat 923.

[0127] In other embodiments, the detection up and down driving device 920 may also be set as a linear motor, and those skilled in the art may select the specific structure of the detection up and down driving device 920 .

[0128] The detection installation structure 930 is fixedly installed on the detection upper and lower driving seats 923 .

[0129] The detection head assembly 940 is fixedly mounted on the detection mounting structure 930. The detection head assembly 940 includes a plurality of detection electrodes 941 and a plurality of electrode driving devices. The electrode driving devices are arranged one by one corresponding to the detection electrodes 941. The electrode driving devices drive the detection electrodes 941 to rotate to detect the contents in the detection test tube.

[0130] Specifically, in this embodiment, a plurality of detection electrodes 941 are arranged along an arc. By providing a plurality of detection electrodes 941, liquids in a plurality of detection test tubes can be detected simultaneously, thereby improving the detection efficiency of the metal detector to a certain extent.

[0131] The electrode driving device is equipped with a Hall sensor, and the Hall sensor configured in the electrode driving device is used to obtain the orientation information of the detection electrode 941. Since one end surface of the detection electrode 941 has a black coating, in order to protect the black coating on the detection electrode 941, it is necessary to use the Hall sensor to obtain the orientation information of the detection electrode 941. When the black coating of the detection electrode 941 is away from the liquid adding position, liquid can be added, thereby avoiding damage to the black coating of the detection electrode 941, so as to ensure the detection accuracy and service life of the heavy metal detector.

[0132] The pumping device 800 is connected to the pipetting hole 644, the sewage pipetting hole 645, the cleaning outlet hole 642, the first outlet pipe 570, the detection liquid adding pipe 340 and other structures through pipelines. The pumping device 800 includes a plurality of plunger pumps and a plurality of multi-channel solenoid valves. The plunger pump is used to control the liquid addition and discharge, and the multi-channel solenoid valve is used to switch the working channel of the corresponding plunger pump to switch the function of the plunger pump. In addition to being used to pump related reagents, the multi-channel solenoid valve can also switch the corresponding plunger pump to the clean water channel to achieve the cleaning function.

[0133] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. Heavy metal detector, characterized by: include: A frame, wherein the frame is provided with a first processing space and a second processing space, the first processing space and the second processing space are arranged up and down, the first processing space is provided with a feeding port, and the second processing space is provided with a detection port; A stirring and rotating mechanism, wherein a plurality of stirring test tubes are installed on the stirring and rotating mechanism; the stirring and rotating mechanism is used to oscillate and statically treat the stirring test tubes; the stirring and rotating mechanism is provided with a first station, a second station and a third station, and the stirring and rotating mechanism drives the stirring test tubes to pass through the first station, the second station and the third station in sequence; A detection rotating mechanism, wherein the detection rotating mechanism is equipped with a plurality of detection test tubes; the detection rotating mechanism is provided with a fourth station and a detection station; A sample adding and weighing module is arranged corresponding to the first station, and the sample adding and weighing module is arranged below the feeding port; A crushing and stirring module is arranged corresponding to the second station, and the crushing and stirring module is used to crush the sample and stir and mix the sample and the reagent; Liquid adding and liquid transferring modules, the number of the liquid adding and liquid transferring modules is set to at least two, and at least two of the liquid adding and liquid transferring modules are respectively arranged at the third station and the fourth station; A detection head module, wherein the detection head module is arranged at the detection station; a pumping device for pumping liquid into or out of the detection tube of the stirring tube; The stirring and rotating mechanism, the sample adding and weighing module, the crushing and stirring module, and one of the liquid adding and pipetting modules are arranged in the first processing space, and the other liquid adding and pipetting module, the detection rotating mechanism, and the detection head module are arranged in the second processing space.

2. The heavy metal detector according to claim 1, characterized in that: The crushing and stirring module comprises: Crushing upper and lower drive device; A crushing installation structure, wherein the crushing up and down driving device drives the crushing installation structure to move up and down; A pulverizing drive device fixedly mounted on the pulverizing mounting structure, the pulverizing drive device being mounted on the pulverizing up and down drive device, the pulverizing up and down drive device driving the pulverizing drive device to move up and down; A crushing cutter head is installed at the output end of the crushing driving device, and the crushing driving device drives the crushing cutter head to rotate.

3. The heavy metal detector according to claim 2, characterized in that: The crushing and stirring module also includes: a first liquid outlet pipe, which is fixed to the lower end of the crushing installation structure; the number of the first liquid outlet pipes is at least two, and at least two of the first liquid outlet pipes are respectively arranged on both sides of the crushing blade head.

4. The heavy metal detector according to claim 2, characterized in that: The crushing cutter head rotates around the crushing shaft, and the crushing cutter head is provided with a cutter head center axis, and the cutter head center axis is inclined relative to the crushing shaft.

5. The heavy metal detector according to claim 1, characterized in that: The stirring test tube is provided with a plurality of flow-disturbing protrusions, and the plurality of flow-disturbing protrusions are evenly arranged on the inner wall of the stirring test tube.

6. The heavy metal detector according to claim 1, characterized in that: The liquid adding and pipetting module comprises a liquid adding and pipetting nozzle, and the liquid adding and pipetting nozzle is provided with a cleaning liquid outlet hole, and the cleaning liquid outlet hole is ring-shaped and surrounds the liquid adding and pipetting nozzle.

7. The heavy metal detector according to claim 6, characterized in that: The liquid adding and pipetting module is also provided with a pipetting hole and a sewage discharge pipetting hole, the openings of the pipetting hole and the sewage discharge pipetting hole are both arranged below the cleaning outlet hole; the opening of the sewage discharge pipetting hole is arranged below the opening of the pipetting hole.

8. The heavy metal detector according to claim 1, characterized in that: It also includes a temperature detection module, which is arranged beside the detection rotation mechanism.

9. The heavy metal detector according to claim 8, characterized in that: The temperature detection module is provided with a test tube side; The temperature detection module comprises: Temperature detection mounting base; A temperature detection probe fixed to the temperature detection mounting seat, wherein the temperature detection probe is configured as a contact temperature sensor and is provided with a detection end, wherein the detection end faces the test tube side; The proximity drive structure has an output end fixed to the temperature detection mounting seat, and the proximity drive structure is used to drive the temperature detection mounting seat to move along the temperature detection direction.

10. The heavy metal detector according to claim 9, characterized in that: The detection end is provided with an arc-shaped concave surface.

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