Water quality sample batch liquid adding device

Abstract

The present invention discloses a water sample batch liquid adding device, which relates to the field of water quality detection technology. It includes a workbench, a frame, a liquid adding mechanism and a reagent tray. The top of the workbench is vertically dug with a working groove. The frame is rotatably connected to the table top of the workbench and close to the working groove. The liquid adding mechanism is installed on the frame. The liquid adding mechanism includes multiple liquid adding nozzles and a rotating assembly. The rotating assembly includes a turntable, a gear and a chute plate. The turntable is provided with a tooth structure. The gear is installed on the frame and the gear is engaged with the turntable. The chute plate abuts against the bottom of the turntable. The chute plate is dug with multiple arc grooves. The turntable is dug with multiple long grooves. The ends of the multiple arc grooves and the multiple long grooves correspond to each other. The liquid adding nozzles are inserted into the arc grooves and the long grooves. The reagent tray is provided with multiple placement holes, which are distributed radially and divided into two inner and outer circles. The present application has the effect of reducing the workload of staff and reducing the probability of work errors.

Description

Technical Field

[0001] The present application relates to the technical field of water quality detection, and in particular to a device for batch liquid addition of water quality samples. Background Art

[0002] Water samples are samples collected from rivers, lakes, domestic sewage, and other water bodies for testing. During water quality testing, fixatives, acid solutions, alkaline solutions, and other reagents are often added to the samples as auxiliary testing agents. This is simply called adding liquids.

[0003] Existing water quality testing relies on manual operation of water quality testers and other equipment to complete related work. Because there are many steps in the design, each step requires relatively frequent manual intervention. Take the liquid addition process as an example:

[0004] The reagent needs to be manually aspirated and then added to the test tube containing the water sample. This step is labor-intensive and relatively error-prone when the test volume is large. Our company has currently proposed a fully automatic water quality testing equipment, and the above-mentioned liquid addition is no longer applicable. Therefore, a new technical solution is proposed to cooperate with it. Summary of the Invention

[0005] In order to reduce the workload of staff and lower the probability of work errors, the present application provides a water quality sample batch liquid addition device.

[0006] This application provides a water sample batch liquid addition device, which adopts the following technical solution:

[0007] A water sample batch liquid adding device includes a workbench, a frame, a liquid adding mechanism, and a reagent tray. The top of the workbench is vertically provided with a working groove. The frame is used to install the liquid adding mechanism. The frame is rotatably connected to the workbench table and close to the working groove. The movable portion of the frame is located above the working groove in the liquid adding working state.

[0008] The liquid adding mechanism is installed on the movable part of the frame, and includes a plurality of liquid adding nozzles and a rotating assembly for pushing the liquid adding nozzles to move positions. The liquid adding nozzles are connected to a liquid adding pipe, and the end of the liquid adding pipe is externally connected to a power unit and a reagent box;

[0009] The rotating assembly includes a turntable, a gear, and a first slide plate. The turntable is circular in plan view and has a tooth structure on its side. The gear is mounted on a frame. A second drive unit is connected to the bottom of a section of the frame. The second drive unit is close to the working slot. The gear is fixed to the output end of the second drive unit and meshes with the tooth structure of the turntable.

[0010] The first chute plate is in contact with the bottom of the turntable, the turntable and the chute plate are coaxial, and the first chute plate is fixedly connected to the movable part of the frame, and the turntable is rotatably connected to the movable part of the frame, the first chute plate is circular in top view and is dug with a plurality of arc grooves, and the plurality of arc grooves are distributed along the circumference of the chute plate, the turntable is dug with a plurality of long grooves, and the plurality of long grooves are distributed along the circumference of the turntable, one end of the arc groove is intersected with an end of the long groove close to the frame, and the other end is intersected with an end of another long groove away from the frame, and the liquid adding nozzle is provided at one end where the arc groove and the long groove intersect each other;

[0011] The reagent tray is provided with a plurality of placement groups, each group includes a plurality of placement holes, and each placement hole is arranged and distributed along the circumference of the reagent tray, and the plurality of placement groups are distributed along the radial direction of the reagent tray.

[0012] Optionally, it further includes a direction adjustment mechanism for adjusting the angle of the reagent tray, the direction adjustment mechanism is installed in the workbench, the reagent tray is rotatably connected to the working tank, and the direction adjustment mechanism is connected to the reagent tray;

[0013] The frame includes a rotating shaft, a swing arm and a driving unit for driving the rotating shaft to rotate. The rotating shaft is rotatably connected to the workbench and is located on the side of the working tank. The swing arm is fixedly connected to the top of the rotating shaft. One end of the swing arm extends out and is located above the working tank in the liquid adding working state. A protective cover for the liquid adding pipe to pass through is connected above the swing arm. The driving unit is set on the workbench and connected to the rotating shaft.

[0014] Optionally, the direction adjustment mechanism includes a rack and a screw slide that drives the rack to move, and the rack is fixed to a slider of the screw slide;

[0015] The reagent tray is circular in a top view and has an outer wall provided with a tooth structure. The rack is located on the side of the reagent tray and is engaged with the tooth structure of the reagent tray.

[0016] Optionally, it also includes an induction component and a controller, the controller is electrically connected to the induction component and the screw slide; the induction component includes a plurality of energized needles 1, a plurality of energized needles 2 and an energizing unit, the bottom of the working tank is provided with a bottom plate with a circular cross-section, the plurality of energized needles 1 are vertically and fixedly arranged along the circumference of the bottom plate, the bottom plate and the bottom of the reagent tray are in contact with each other, the plurality of energized needles 2 are installed on the edge of the reagent tray and are arranged and distributed along the circumference of the reagent tray, the needles of the energized needles 2 extend outward, the number of the energized needles 2 is equal to that of the energized needles 1, and the plurality of energized needles 1 are provided with resistors of different sizes, when each liquid adding nozzle is aligned one by one with each test tube in the reagent tray, the end of the energized needle 2 contacts the end of the energized needle 1; the energizing unit is provided on the workbench and is located on the side of the reagent tray, the side wall of the reagent tray is provided with a conductive sheet, and the power supply end of the energizing unit contacts the conductive sheet, and the controller is configured as follows:

[0017] Get the current value fed back by each energized pin 2;

[0018] Analyze each current value, search the preset database, determine the matching control parameters, and control the lead screw slide to respond based on the control parameters.

[0019] Optionally, a detection mechanism for sensing whether a test tube is present in the placement hole of the reagent tray is further included, wherein the detection mechanism includes a floating plate and a plurality of inductive sensors, and the inductive sensors are electrically connected to the controller;

[0020] A water trough is dug inside the bottom plate and has an open top. The floating plate is located in the water trough, and the size of the water trough slot is smaller than the size of the floating plate. A water inlet hole is opened on the bottom wall of the water trough of the bottom plate, and an overflow hole is opened on the side wall of the water trough. The water trough is externally connected to a water supply unit through the water inlet hole and the overflow hole. The floating plate is located above the water inlet hole and floats in the longitudinal direction.

[0021] The bottom of the reagent tray is provided with an opening at the position where each test tube is placed, and the size of the opening is smaller than the diameter of the test tube. A plurality of inductive sensors are mounted on the upper surface of the floating plate, and the position of each inductive sensor corresponds to the position of the opening at the bottom of the reagent tray;

[0022] The bottom of the chute plate 1 is provided with a chute plate 2 having the same structure as the chute plate 1, and the chute plate 2 is provided with the above-mentioned arc groove. The liquid adding nozzle includes a nozzle head and a nozzle tail. The nozzle head is located in the arc groove in the chute plate 1, and the nozzle tail is located in the arc groove in the chute plate 2. The end of the liquid adding pipeline is connected to the nozzle tail, and the liquid adding pipeline is installed with an electric valve 2. The bottom of the nozzle head is fixed with an electromagnet, and the nozzle tail is fixed with a magnetic part that can be attracted by an electric magnet. The electromagnet and the electric valve 2 are electrically connected to the controller, and the controller is configured as follows:

[0023] Enter the predefined sensor number and dosing nozzle number, and perform the associated pairing;

[0024] If any of the induction sensors feeds back a signal that there is a test tube above it, the electromagnet on the corresponding paired liquid adding nozzle is controlled to turn on;

[0025] When receiving the signal after the paired electromagnet feedback is turned on, the drive unit 2 is controlled to act;

[0026] When the action completion signal fed back by the second driving unit is received, the second electric valve corresponding to the paired liquid adding nozzle is controlled to open.

[0027] Optionally, the water supply unit includes water tank 1, water tank 2 and a water pump. The water pipes of water tank 1 and water tank 2 are connected to two water inlet holes and overflow holes respectively. Water tank 1 is arranged close to the water inlet hole of the sink, and water tank 2 is arranged close to the overflow hole of the sink. The water pump is located between water tank 1 and water tank 2 and is used to pump water from water tank 2 to water tank 1; water tank 1 is provided with electric valve 1, and electric valve 1 is electrically connected to the controller. The controller is configured as follows: if the screw slide is in working state, electric valve 1 is controlled to open.

[0028] Optionally, the top of the energizing needle 1 is arc-shaped, a plurality of springs are fixed to the bottom plate, and the bottoms of the plurality of energizing needles 1 are respectively fixed to the upper ends of the springs.

[0029] Optionally, the power supply unit includes an arc plate and a power supply sheet, the power supply sheet is connected to the power supply, and the arc plate is connected to the power supply sheet and the protruding end thereof abuts against the reagent tray.

[0030] Optionally, the outer wall of the reagent tray is wrapped with an insulating layer, and the insulating layer is provided with slots for the reagent tray to engage with the rack and for the arc plate to contact with the reagent tray.

[0031] To sum up, the present application includes the following beneficial technical effects: the turntable is driven to rotate by gears, and the turntable can cooperate with the slide plate to drive the liquid adding nozzle in its long groove to move toward the inner circle, so that the test tubes in the inner circle can be added with liquid again after the test tubes in the outer circle are added with liquid, which reduces the workload of the staff, improves work efficiency, and reduces the probability of work errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0033] Figure 2 yes Figure 1 Enlarged view of part A;

[0034] Figure 3is a top view of the turntable in Example 1 of the present application;

[0035] Figure 4 is a top view of the chute plate 1 in Example 1 of the present application;

[0036] Figure 5 This is a structural diagram of the direction adjustment mechanism in Example 2 of the present application;

[0037] Figure 6 is a top view of the direction adjustment mechanism in Example 2 of the present application;

[0038] Figure 7 This is a front view of the sensing component in Example 2 of the present application;

[0039] Figure 8 This is a structural diagram of the liquid adding mechanism in Example 2 of the present application;

[0040] Figure 9 This is a schematic diagram of controller connection in Example 2 of the present application.

[0041] Explanation of the accompanying reference numerals: 1. workbench; 2. frame; 3. liquid adding mechanism; 4. reagent tray; 5. working tank; 6. direction adjustment mechanism; 7. sensing component; 8. controller; 9. detection mechanism; 21. rotating shaft; 22. swing arm; 23. driving unit 1; 24. protective cover; 31. liquid adding nozzle; 311. nozzle head; 312. nozzle tail; 32. rotating component; 321. turntable; 322. gear; 323. slide plate 1; 324. driving unit 2; 325. slide plate 2; 326. electric valve 2; 327. electromagnet; 51. bottom plate; 61. rack; 62. screw slide; 71. energizing needle 1; 72. energizing needle 2; 73. energizing unit; 731. arc plate; 732. energizing sheet; 74. spring; 91. floating plate; 92. inductive sensor; 93. electric valve 1. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-9 This application is described in further detail.

[0043] The embodiment of the present application discloses a device for batch liquid addition of water quality samples.

[0044] Example 1:

[0045] Reference Figure 1 and Figure 2The water quality sample batch liquid adding device includes a workbench 1, a frame 2, a liquid adding mechanism 3 and a reagent tray 4. The workbench 1 is vertically dug with a working groove 5, which can be a circular working groove 5. The frame 2 is rotatably connected to the workbench 1. The frame 2 is located on the side of the working groove 5. The frame 2 extends toward the top of the workbench 1 and then extends its movable part toward the side. The liquid adding mechanism 3 is connected to the movable part of the frame 2. When the equipment is in the liquid adding working state, the movable part of the frame 2 is located above the working groove 5, so that the liquid adding mechanism 3 can add liquid to the test tube. Through the above arrangement, the test tube can be placed in the reagent tray 4 and the liquid adding mechanism 3 is used for unified liquid addition, which can improve the working efficiency of liquid addition.

[0046] Reference Figure 2 The liquid adding mechanism 3 includes a plurality of liquid adding nozzles 31 and a moving component for pushing the liquid adding nozzle 31 to move its position, wherein the liquid adding nozzle 31 is an existing nozzle and will not be described in detail here. The liquid adding nozzle 31 is connected to a liquid adding pipe (not shown in the figure), and the liquid adding pipe is a hose, which is more convenient for connecting with the liquid adding nozzle 31. The end of the liquid adding pipe is externally connected to a power unit and a reagent box, wherein the power unit can be a water pump, and the reagent box is used to store chemical reagents for water quality testing.

[0047] Reference Figure 2 and Figure 3 The rotating assembly 32 includes a turntable 321, a gear 322, and a first slide plate 323. The turntable 321 is circular in plan view and has a tooth structure along its side. The gear 322 is mounted on the frame 2. The gear 322 is located to the side of the turntable 321 and meshes with the turntable 321. The bottom of one end of the movable portion of the frame 2 is connected to a second drive unit 324. The second drive unit 324 can be a motor. The output end of the motor is fixed to the center of the gear 322 and drives the gear 322 to rotate. The diameter of the gear 322 is smaller than the diameter of the turntable 321 and can be about one-sixth of the diameter of the turntable 321. That is, if the diameter of the turntable 321 is 18 cm, the diameter of the gear 322 can be 3 cm. Therefore, when the gear 322 drives the turntable 321 to rotate, the rotation speed will not be too fast.

[0048] The first chute plate 323 abuts the bottom of the rotating disk 321. The rotating disk 321 and the first chute plate 323 are coaxial and both are fixed to the movable portion of the frame 2. The axis of the rotating disk 321 and the chute plate defines a connecting hole for the movable portion of the frame 2 to pass through. The movable portion passes through the connecting hole and is fixed to the first chute plate 323 by bolts, allowing the rotating disk 321 to rotate along the axis. The liquid addition nozzle 31 is installed at one end where the arc groove and the elongated groove intersect.

[0049] Reference Figure 3 and Figure 4The chute plate 1 323 is circular in plan view and is provided with a plurality of arcuate grooves. The arcuate grooves are distributed along the circumference of the chute plate 1 323 and are arranged obliquely. The turntable 321 is provided with a plurality of obliquely arranged long grooves. The long grooves are distributed along the circumference of the turntable 321. One end of the arcuate groove is intersected with the end of the long groove close to the frame 2, and the other end is intersected with the end of another long groove facing away from the frame 2. That is, the two ends of each long groove do not correspond to the two ends of the same arcuate groove, but rather correspond in an alternating manner. For example, one end of the number one long groove corresponds to one end of the number one arcuate groove, and the other end of the number one long groove corresponds to the other end of the number four arcuate groove. This arrangement allows the liquid adding nozzle 31 to pass through and simultaneously move along the trajectory of the arcuate groove and the long groove to the interior. Both ends of the arc groove and the long groove are arc-shaped structures, which makes it easier for the outer wall of the liquid adding nozzle 31 to be close to the groove wall of the arc groove and the long groove. The upper end of the liquid adding nozzle 31 can extend outward to have a limit plate to prevent the liquid adding nozzle 31 from falling down.

[0050] Reference Figure 2 The reagent tray 4 is provided with a plurality of placement groups for test tubes, each group includes a plurality of placement holes, and each placement hole is arranged and distributed along the circumference of the reagent tray 4, and the plurality of placement groups are distributed radially along the reagent tray 4. Example: The placement group can be divided into two circles of placement holes, the inner and outer circles, wherein the number of placement holes in the inner circle is smaller than that in the outer circle, and the number of placement holes in the outer circle can be equal to the number of nozzles. The test tubes can be inserted into the placement holes at a fixed position and then sent into the working tank 5 by the reagent tray 4. By providing multiple groups of placement holes, the number of test tubes that can be added with liquid in one addition operation can be maximized, thereby improving work efficiency.

[0051] Through the above arrangement, when the driving unit 2 324 starts working, the gear 322 rotates to drive the turntable 321 to rotate. Since the slide plate 1 323 below the turntable 321 is fixed to the movable part of the frame 2, the slide plate 1 323 does not rotate. While the gear 322 drives the turntable 321 to rotate, the turntable 321 can drive the liquid adding nozzle 31 in its long groove to move toward the inner circle, so that the test tubes in the inner circle can be added with liquid again after the test tubes in the outer circle are added with liquid, which reduces working time and improves working efficiency.

[0052] Reference Figure 1 and Figure 2, this device also includes a direction adjustment mechanism 6 for adjusting the angle of the reagent tray 4, the direction adjustment mechanism 6 is installed in the workbench 1, and the reagent tray 4 is rotatably connected in the working groove 5, and the direction adjustment mechanism 6 is connected to the reagent tray 4. In the present embodiment, the direction adjustment mechanism 6 can be a motor, and a rotating disk for carrying the reagent tray 4 is installed in the working groove 5, the output end of the motor is fixed to the axis of the rotating disk, the bottom of the table of the workbench 1 can be provided with a mounting seat for the installation of the power supply motor, the motor is fixed to the mounting seat by bolts, and because the speed of the motor is too fast, a speed reducer can also be added to assist work, and the speed reducer and the motor are connected by a coupling. Through the above-mentioned arrangement, if the reagent tray 4 is placed in the rotating disk, the nozzle of the test tube placed therein is not directly below the liquid adding nozzle 31, the test tube can be adjusted to directly below the liquid adding nozzle 31 by adjusting the rotating disk to rotate.

[0053] Reference Figure 1 and Figure 2 The frame 2 includes a rotary shaft 21, a swing arm 22, and a drive unit 23 for driving the rotary shaft 21 to rotate. The drive unit 23 may include a motor and a reducer. The rotary shaft 21 is rotatably connected to the workbench 1 through a bearing and is located on the side of the working tank 5. The swing arm 22 can be fixed to the top of the rotary shaft 21 by bolts. One end of the swing arm 22 extends to the side and is located directly above the working tank 5 when adding liquid. The motor and the axis of the rotary shaft 21 are coaxially fixed. The motor can be fixed to a pre-set mounting seat at the bottom of the table of the workbench 1 by bolts. The motor can drive the rotary shaft 21 to rotate, thereby driving the swing arm 22 to rotate. When the liquid addition work is not being performed or the reagent tray 4 needs to be placed, the swing arm 22 and even the liquid adding mechanism 3 fixed to the swing arm 22 can be rotated to the side, thereby making it easier to operate. A protective cover 24 for the liquid adding pipe to pass through is fixed to the upper side wall of the swing arm 22 by bolts. Through holes are respectively provided on the two side walls of the protective cover 24. One end of the liquid adding pipe is connected to the liquid adding nozzle 31, and the other end passes through the two through holes of the protective cover 24 to be connected to the external power unit and the reagent box. The power unit can be a water pump, and the power unit can be connected between the reagent box and the liquid adding nozzle 31, that is, the liquid adding pipe can be connected to the water outlet end of the water pump, and the reagent box can be connected to the water pumping end of the water pump through a water pipe, so that liquid can be added without making the liquid adding pipe too messy, and preventing the pipe from winding around the swing arm 22 and hindering the liquid adding work.

[0054] Example 2:

[0055] The difference between this embodiment and the first embodiment is that:

[0056] Reference Figure 5 and Figure 6The direction adjustment mechanism 6 includes a rack 61 and a screw slide 62 that drives the rack 61 to move. The screw slide 62 is fixed to the inner side wall of the workbench 1 by bolts and is located on the side of the working groove 5. The rack 61 can be fixed to the slider of the screw slide 62 by bolts, so that when the screw slide 62 works, the slider can drive the rack 61 to work together; for greater stability, the screw slide 62 can also be installed with two sliders, and the rack 61 is fixed to the two sliders.

[0057] The reagent tray 4 is circular when viewed from above and a tooth structure is provided on the edge of the upper end of the outer wall. Since the screw slide 62 is located on the side of the working groove 5, the rack 61 is also located on the side of the working groove 5. The tooth structure of the rack 61 faces the working groove 5 and engages with the tooth structure of the reagent tray 4. Therefore, when the rack 61 moves, it can drive the reagent tray 4 to rotate, and then adjust the angle of the reagent tray 4 so that the tube mouth of the test tube in the tray is directly opposite the bottom of the liquid addition nozzle 31.

[0058] Reference Figure 7 , further comprising a sensing component 7 and a controller 8. The sensing component 7 can feedback the circulating current, and the controller 8 judges the feedback current and analyzes whether the angle needs to be further adjusted. The following is a detailed explanation:

[0059] The induction assembly 7 includes a plurality of energizing pins 1 71, a plurality of energizing pins 2 72, and a power supply unit 73 for supplying current to the energizing pins 2 72. A conductive sheet, through which current can flow, is fixedly sleeved on one end of the outer wall of the reagent tray 4. The power supply end of the power supply unit 73 contacts the conductive sheet, which is made of metal, such as copper. The reagent tray can be made of an insulating material to avoid energizing the entire reagent tray. The number of energizing pins 1 71 and 2 72 should be larger to ensure more accurate feedback data. There can be at least 60 energizing pins 1 71 and 2 72 distributed. A bottom plate 51 with a circular cross-section is provided at the bottom of the working tank 5. A plurality of energizing needles 71 are vertically arranged and fixed along the circumference of the bottom plate. The needle head of the energizing needle 71 faces upward, and the upper surface of the bottom plate 51 contacts the lower surface of the reagent tray 4. The energizing needle 2 72 can be the outer wall of the conductive sheet fixed on the reagent tray 4, and the needle head extends outward. The diameter of the reagent tray 4 is smaller than the diameter of the bottom plate 51. Therefore, when the reagent tray 4 contacts the bottom plate 51, the energizing needle 2 72 extending from its outer wall can contact the energizing needle 1 71.

[0060] Reference Figure 7The power supply unit 73 includes an arc plate 731 and a power supply sheet 732. Both the arc plate 731 and the power supply sheet 732 are made of metal, such as copper. The arc plate 731 is arc-shaped when viewed from above, and the protruding end contacts the reagent tray 4. One end of the power supply sheet 732 can be welded to the arc plate 731. The other end of the power supply sheet 732 is connected to a power supply, so that the power supply pin 71 on the reagent tray 4 can be energized. An elastic member is provided at the end of the power supply sheet 732 that is away from the reagent tray 4, wherein the elastic member can be a spring for assisting the arc plate 731 to contact the conductive sheet. The sensing component 7 and the lead screw slide 62 are electrically connected to the controller 8. The controller is configured as follows:

[0061] Obtain the current value fed back by each energized pin 2 72;

[0062] Analyze each current value, search a preset database, determine matching control parameters, and control the lead screw slide 62 to respond based on the control parameters.

[0063] For example: each energized needle 2 72 can be numbered in advance, such as: X1, X2, X3... Among them, the preset database can be the current value in each energized needle 2 72 for comparison set in advance by the staff according to the resistance size, such as: the current value flowing in the energized needle 2 72 numbered X1 is preset to 1A, the current value flowing in the energized needle 2 72 numbered X2 is preset to 2A, and so on, and the preset value is set as the control parameter. If the current value flowing in the energized needle 2 72 numbered X1 is 2A, and the current value flowing in the energized needle 2 72 numbered X2 is 3A... then it means that the angle of the reagent tray 4 is not the standard angle at this time, that is, the test tube in the reagent tray 4 is not aligned with the liquid adding nozzle 31 above, and the screw slide 62 should continue to be controlled to work until the current value data corresponds to the preset control parameter.

[0064] Reference Figure 7 The top of the energizing needle 71 is arc-shaped, and a plurality of springs 74 are fixed to the bottom plate 51. The positions of the plurality of springs 74 correspond to the positions of the energizing needle 71. One end of the spring 74 is fixed to the bottom plate 51, and the other end is fixed to the bottom end of the energizing needle 71. Since the energizing needle is relatively small, the spring 74 can be a connecting seat with a fixed energizing needle on the top, and the energizing needle is inserted into the connecting seat and fixed. The needle body of the energizing needle 2 72 can be cylindrical, so that it is more convenient for the energizing needle 2 72 to pass through the end of the energizing needle 1 71. Through the above arrangement, the arc shape of the top of the energizing needle 1 71 makes it easier for the energizing needle 2 72 to pass through, and the spring 74 is provided, so that when the energizing needle 2 72 rotates and passes, the energizing needle 1 71 can be slightly moved by the resistance, thereby reducing the damage caused by the energizing needle 1 71 being unable to avoid.

[0065] The number of energizing needles 1 71 and 2 72 is equal, and their spacing is equal, so that multiple energizing needles 1 71 and multiple energizing needles 2 72 can contact each other simultaneously. Each of the energizing needles 1 71 is configured with different resistors, meaning each energizing needle 1 71 has a different resistance value. This configuration can be achieved by selecting needles of different materials or sizes. For example, the energizing needle 1 71 with the lowest resistance value has a diameter of 0.1 mm, while the energizing needle 1 71 with the highest resistance value has a diameter of 1 mm. The diameters of the remaining needles increase in descending order. Feedback from the current flowing between the different energizing needles 1 71 and 2 72 after contact can be used to determine whether the reagent tray 4 is correctly oriented.

[0066] The current between each energizing pin 1 71 and energizing pin 2 72 when the reagent tray 4 is correctly placed can be recorded in advance by the controller 8. Since the resistance values ​​of the energizing pin 2 72 are different, if the current data fed back by the sensing component 7 does not correspond to the pre-recorded current data during subsequent use, it can be analyzed that the position angle of the reagent tray 4 is incorrect and the angle needs to be adjusted. The angle adjustment is that when the reagent tray 4 is rotated by the rack 61, the contact between the energizing pin 1 71 and the energizing pin 2 72 will generate currents of different magnitudes and feedback. The controller 8 can determine whether it has been rotated to the correct position by analyzing the current feedback. The current magnitude must be kept within 10A to prevent accidents caused by human body accidental touch. For example, if the voltage is 220V, the resistance of the energizing pin 1 71 with the smallest resistance can be set to 25Ω, then the current magnitude is 8.8A, and the resistance of the remaining energizing pins 1 71 increases in sequence.

[0067] Reference Figure 6 and Figure 7 , further comprising a detection mechanism 9 , which includes a floating plate 91 and a plurality of inductive sensors 92 , and the inductive sensors 92 are electrically connected to the controller 8 .

[0068] A water trough is longitudinally excavated on the upper surface of the bottom plate 51, with an open top. A floating plate 91 is positioned within the trough, and the size of the floating plate 91 is larger than the trough's opening, i.e., the size of the top opening of the bottom plate 51. The bottom plate 51 is provided with a water inlet and overflow hole. The inlet hole is located at the bottom of the trough and below the floating plate 91, while the overflow hole is located on the side wall of the trough. The trough is externally connected to a water supply unit through the inlet and overflow holes. The floating plate 91 is raised longitudinally, i.e., a groove is longitudinally excavated on the inner side wall of the trough. The side edges of the floating plate 91 are longitudinally provided with protrusions corresponding to the grooves. The protrusions engage and slide within the grooves, preventing the floating plate 91 from rotating while it is raised.

[0069] The bottom of the reagent tray 4 is provided with an opening at the position where each test tube is placed. The size of the opening is smaller than the diameter of the test tube, thereby preventing the test tube from falling. A plurality of inductive sensors 92 are mounted on the upper surface of the float plate 91, and the position of each inductive sensor 92 corresponds to the position of the opening at the bottom of the reagent tray 4, that is, each inductive sensor 92 is aligned with each test tube in the reagent tray 4. In this embodiment, the inductive sensor 92 can be a pressure sensor, so that after water is injected into the water tank through the water supply unit, the float plate 91 floats up, thereby driving the inductive sensor 92 to rise upward, so that the detection head of the inductive sensor 92 can be extended into the opening at the bottom of the reagent tray 4 and contact the test tube, thereby being able to detect whether each placement hole in the reagent tray 4 stores a test tube.

[0070] Reference Figure 2 and Figure 8 The bottom of the chute plate 1 323 is provided with a chute plate 2 325 with the same structure as the chute plate 1 323, and the chute plate 2 325 is also provided with the above-mentioned arc groove. The liquid adding nozzle 31 includes a nozzle head 311 and a nozzle tail 312. This arrangement can separate the liquid adding nozzle 31, so that when it is not needed, the nozzle tail 312 does not need to move at the same time as the nozzle head 311, wherein the nozzle head 311 is located in the arc groove on the chute plate 1 323, and the nozzle tail 312 is located in the arc groove of the chute plate 2 325. The end of the liquid adding pipe of the liquid adding nozzle 31 is connected to the nozzle tail 312 and each liquid adding pipe is respectively installed with an electric valve 2 326. The electric valve 2 326 can be a solenoid valve, which is connected to the liquid adding pipe through a flange. An electromagnet 327 is fixed to the bottom of the nozzle head 311, and a magnetic member, which can be an iron sheet, is attached to the power supply magnet 327. When the electromagnet 327 is energized, it attracts the magnetic member, thereby driving the nozzle tail 312 to move. Multiple liquid-adding nozzles 31 correspond to inductive sensors 92, and one liquid-adding nozzle 31 can correspond to several inductive sensors 92. That is, individual liquid-adding nozzles 31 have inductive sensors 92 on the outer circle and need to add liquid based on the feedback from the inductive sensors 92. After rotating to the inner circle, there is still a test tube directly below it, which still needs to correspond to an inductive sensor 92. A liquid-adding nozzle 31 can correspond to at most two inductive sensors 92.

[0071] The liquid adding nozzle 31 is electrically connected to the second electric valve 326 and the electromagnet 327. The inductive sensor 92 and the liquid adding nozzle 31 are electrically connected to the controller 8. The controller 8 is configured as follows:

[0072] Enter the predefined numbers of the induction sensors 92 and the numbers of the dosing nozzles 31 and perform associated pairing. The induction sensors 92 may be numbered A1, A2, A3, etc., and the dosing nozzles 31 may be numbered B1, B2, B3, etc. A1 is paired with B1, and A2 is paired with B2. By using this as an example, all dosing nozzles 31 and induction sensors 92 can be paired one by one. Pairing the two makes it easier to determine whether a dosing nozzle 31 needs to be added.

[0073] After the dosing nozzle 31 moves to the inner circle, it can be paired again. For example, if the dosing nozzles 31 to be used in the inner circle are numbered B1, B3, B5..., and the sensing sensors 92 are numbered A13, A14, A15..., A13 and B1, A14 and B3, A15 and B5 can be paired for the second time for judgment after the dosing nozzle 31 moves.

[0074] If any of the induction sensors 92 feeds back a signal indicating that there is a test tube above it, the electromagnet 327 on the corresponding paired liquid adding nozzle 31 is controlled to turn on; turning on the electromagnet 327 can adsorb the nozzle head 311 and the nozzle tail 312 of the liquid adding nozzle 31 together, thereby making the liquid adding nozzle 31 complete, which is convenient for subsequent liquid adding work.

[0075] When receiving the signal of turning on from the paired electromagnet 327 , the second driving unit 324 is controlled to operate; this step is to control the rotation of the turntable 321 .

[0076] When the action completion signal is received from the second driving unit 324, the corresponding electric valve 2 326 of the paired liquid adding nozzle 31 is controlled to open. By opening the electric valve 2 326, liquid can be added to the test tube. Moreover, by controlling the opening of different electric valves 326, even when the reagent tray 4 is not full of reagents, targeted work can still be carried out according to the number and placement of test tubes.

[0077] Through this step, the induction sensor can be used to accurately determine which liquid-adding nozzle 31 should be used for liquid-adding work. When the reagent tray 4 is not full of test tubes, it will not affect the use of the device. Through the segmented design of the liquid-adding nozzle 31, the tail part 311 of the nozzle can be left in place when not in use, so that too many liquid-adding nozzles 31 will not be moved at the same time, hindering the staff from observing or supervising the working status of the device; connecting the liquid-adding pipe to the tail part 312 of the nozzle can effectively prevent the reagent from remaining in the head part 311 of the nozzle and finally dripping when the turntable 321 rotates.

[0078] The water supply unit (not shown in the figure) includes water tank 1, water tank 2 and a water pump. The water pipes of water tank 1 and water tank 2 are connected to the water inlet and overflow hole respectively. Water tank 1 is close to the water inlet end of the sink, that is, close to the water inlet, and water tank 2 is close to the water outlet end of the sink, so that the water can circulate. The water sent out from water tank 1 flows into the sink. When the water in the sink overflows, it can flow into water tank 2. A water pump is connected between water tank 1 and water tank 2, and the water in water tank 2 can be sent to water tank 1 through the water pump, thereby saving some water.

[0079] The water outlet pipe of water tank 1 is connected to electric valve 1 93, which can be flange-connected. Electric valve 1 93 and screw slide 62 are electrically connected to controller 8. Controller 8 is configured to control electric valve 1 93 to open if screw slide 62 is in working state.

[0080] With this arrangement, the water tank can be filled with water while the reagent tray 4 is adjusted. When water is added to the tank, the float plate 91 rises, allowing the induction sensor 92 to contact the bottom of the test tube in the reagent tray 4. This provides feedback on which placement hole has the test tube, thereby controlling the liquid adding mechanism 3 above to add liquid. If the reagent tray 4 is still not adjusted properly when the water is full, the water will flow out of the water hole and be collected by the water tank 2 for later use.

[0081] It is worth noting that the initial placement angle of the reagent tray 4 should avoid a small range. The range to be avoided is that once the reagent tray 4 is placed, the adjustment time is insufficient to fill the water tank with water or insufficient to allow the float 91 to rise to a position where the induction sensor 92 can sense the reagent tray 4 above. The reagent tray 4 can be placed within 15° of the correct angle, and the remaining 345° angle can be placed at any angle. Areas can be divided on the workbench 1 for identification and prompts.

[0082] The outer wall of the reagent tray 4 is wrapped with an insulating layer, which can be made of plastic. The insulating layer can be a thin layer attached to the outer wall of the reagent tray 4. The insulating layer is provided with a slot for the tooth structure of the reagent tray 4 to engage with the rack 61 and for the power-carrying part to contact the arc plate 731. The slot is provided to ensure that the power-carrying part of the reagent tray 4 has the ability to carry electricity, and its tooth structure is exposed and can engage with the rack 61 without affecting its angle adjustment function; at the same time, the provision of an insulating layer can effectively prevent the human body from accidentally touching the reagent tray 4 and causing damage or accidents.

[0083] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A water sample batch liquid adding device, characterized by: The invention comprises a workbench (1), a frame (2), a liquid adding mechanism (3) and a reagent tray (4); a working groove (5) is vertically excavated on the top of the workbench (1); the frame (2) is used to install the liquid adding mechanism (3); the frame (2) is rotatably connected to the table surface of the workbench (1) and is close to the working groove (5); and the movable part of the frame (2) is located above the working groove (5) in the liquid adding working state; The liquid adding mechanism (3) is mounted on the movable portion of the frame (2), and comprises a plurality of liquid adding nozzles (31) and a rotating assembly (32) for pushing the liquid adding nozzles (31) to move. The liquid adding nozzles (31) are connected to a liquid adding pipe, and the end of the liquid adding pipe is externally connected to a power unit and a reagent box. The rotating assembly (32) includes a turntable (321), a gear (322) and a first slide plate (323). The turntable (321) is circular in top view and has a tooth structure on its side edge. The gear (322) is mounted on the frame (2). The bottom of one end of the frame (2) is connected to a second drive unit (324). The second drive unit (324) is close to the working slot (5). The gear (322) is fixed to the output end of the second drive unit (324). The gear (322) is meshed with the tooth structure of the turntable (321). The chute plate 1 (323) contacts the bottom of the turntable (321), the turntable (321) and the chute plate 1 (323) are coaxial, and the chute plate 1 (323) is fixedly connected to the movable part of the frame (2), and the turntable (321) is rotatably connected to the movable part of the frame (2). The chute plate 1 (323) is circular in top view and is provided with a plurality of arc grooves, and the plurality of arc grooves are distributed along the circumference of the chute plate 1 (323). The turntable (321) is provided with a plurality of long grooves, and the plurality of long grooves are distributed along the circumference of the turntable (321). One end of the arc groove is intersected with one end of the long groove close to the frame (2), and the other end is intersected with one end of another long groove away from the frame (2). The liquid adding nozzle (31) is provided at one end where the arc groove and the long groove intersect each other. The reagent tray (4) is provided with a plurality of placement groups, each group includes a plurality of placement holes, and each placement hole is arranged and distributed along the circumference of the reagent tray (4), and the plurality of placement groups are distributed radially along the reagent tray (4); The invention also includes a direction adjustment mechanism (6) for adjusting the angle of the reagent tray (4), the direction adjustment mechanism (6) is installed in the workbench (1), the reagent tray (4) is rotatably connected to the working groove (5), and the direction adjustment mechanism (6) is connected to the reagent tray (4); the direction adjustment mechanism (6) includes a rack (61) and a screw slide (62) for driving the rack (61) to move, and the rack (61) is fixed to the slider of the screw slide (62); the reagent tray (4) is circular in a top view and its outer wall is provided with a tooth structure along its circumference, the rack (61) is located on the side of the reagent tray (4), and the rack (61) is engaged with the tooth structure of the reagent tray (4); It also includes a sensing component (7) and a controller (8), wherein the controller is electrically connected to the sensing component (7) and the screw slide (62); the sensing component (7) includes a plurality of energizing needles (71), a plurality of energizing needles (72) and an energizing unit (73); a bottom plate (51) with a circular cross section is provided at the bottom of the working tank (5); the plurality of energizing needles (71) are vertically arranged and fixedly installed along the circumference of the bottom plate (51); the bottom plate (51) and the bottom of the reagent tray (4) are in contact; the plurality of energizing needles (72) are installed on the edge of the reagent tray (4) and are arranged and distributed along the circumference of the reagent tray (4); The needle tip of the second energizing needle (72) extends outward, the number of the second energizing needle (72) is equal to the number of the first energizing needle (71), and the resistance value contained in each first energizing needle (71) is different. When each liquid adding nozzle (31) is aligned with each test tube in the reagent tray (4), the end of the second energizing needle (72) and the end of the first energizing needle (71) contact each other; the energizing unit (73) is arranged on the workbench and is located on the side of the reagent tray (4), the side wall of the reagent tray (4) is provided with a conductive sheet, and the power supply end of the energizing unit (73) contacts the conductive sheet, and the controller (8) is configured as follows: Obtain the current value fed back by each energized pin 2 (72); Analyze each current value, search a preset database, determine matching control parameters, and control the lead screw slide (62) to respond based on the control parameters.

2. The water sample batch liquid adding device according to claim 1, characterized in that: The frame (2) includes a rotary shaft (21), a swing arm (22) and a driving unit (23) for driving the rotary shaft (21) to rotate. The rotary shaft (21) is rotatably connected to the workbench (1) and is located on the side of the working tank (5). The swing arm (22) is fixedly connected to the top of the rotary shaft (21). One end of the swing arm (22) extends out and is located above the working tank (5) in the liquid adding working state. A protective cover (24) for the liquid adding pipe to pass through is connected above the swing arm (22). The driving unit (23) is arranged on the workbench (1) and connected to the rotary shaft (21).

3. The water sample batch liquid adding device according to claim 1, characterized in that: It also includes a detection mechanism (9) for sensing whether a test tube is present in the placement hole of the reagent tray (4), the detection mechanism (9) including a floating plate (91) and a plurality of inductive sensors (92), the inductive sensors (92) being electrically connected to the controller (8); A water trough is dug inside the bottom plate (51) and is open at the top. The floating plate (91) is located in the water trough, and the size of the water trough slot is smaller than that of the floating plate (91). A water inlet hole is opened on the bottom wall of the water trough of the bottom plate (51), and an overflow hole is opened on the side wall of the water trough. The water trough is externally connected to a water supply unit through the water inlet hole and the overflow hole. The floating plate (91) is located above the water inlet hole, and the floating plate (91) floats in the longitudinal direction. The bottom of the reagent tray (4) is provided with an opening at a position where each test tube is placed, and the size of the opening is smaller than the diameter of the test tube. A plurality of the inductive sensors (92) are mounted on the upper surface of the floating plate (91), and the position of each inductive sensor (92) corresponds to the position of the opening at the bottom of the reagent tray (4); The bottom of the chute plate 1 (323) is provided with a chute plate 2 (325) with the same structure as the chute plate 1 (323), and the chute plate 2 (325) is provided with the above-mentioned arc groove. The liquid adding nozzle (31) includes a nozzle head (311) and a nozzle tail (312), the nozzle head (311) is located in the arc groove in the chute plate 1 (323), and the nozzle tail (312) is located in the arc groove in the chute plate 2 (325); the end of the liquid adding pipeline is connected to the nozzle tail (312), and the liquid adding pipeline is installed with an electric valve 2 (326), the bottom of the nozzle head (311) is fixed with an electromagnet (327), and the nozzle tail (312) is fixed with a magnetic part that can be adsorbed by the electric magnet (327), the electromagnet (327) and the electric valve 2 (326) are electrically connected to the controller (8), and the controller (8) is configured as follows: Entering the predefined number of the induction sensor (92) and the number of the liquid adding nozzle (31), and performing associated pairing; If any one of the inductive sensors (92) feeds back a signal indicating that there is a test tube above it, the electromagnet (327) on the corresponding paired liquid adding nozzle (31) is controlled to turn on; When receiving the signal after the paired electromagnet (327) feedback is turned on, the second driving unit (324) is controlled to operate; When the action completion signal fed back by the second driving unit (324) is received, the second electric valve (326) corresponding to the paired liquid adding nozzle (31) is controlled to open.

4. The water sample batch liquid adding device according to claim 3, characterized in that: The water supply unit includes a water tank 1, a water tank 2 and a water pump. The water pipes of the water tank 1 and the water tank 2 are connected to the water inlet and the overflow hole respectively. The water tank 1 is arranged near the water inlet of the water tank, and the water tank 2 is arranged near the overflow hole of the water tank. The water pump is located between the water tank 1 and the water tank 2 and is used to pump water from the water tank 2 to the water tank 1. The water tank 1 is provided with an electric valve 1 (93), and the electric valve 1 (93) is electrically connected to the controller (8). The controller (8) is configured to: if the screw slide (62) is in a working state, the electric valve 1 (93) is controlled to open.

5. The water sample batch liquid adding device according to claim 4, characterized in that: The top of the energizing needle (71) is arc-shaped, and the bottom plate (51) is fixed with a plurality of springs (74). The bottoms of the plurality of energizing needles (71) are respectively fixed to the upper ends of the springs (74).

6. The water sample batch liquid adding device according to claim 1, characterized in that: The power supply unit (73) includes an arc plate (731) and a power supply sheet (732), wherein the power supply sheet (732) is arranged on the workbench (1) and is connected to a power supply, and the arc plate (731) is connected to the power supply sheet (732) and the protruding end thereof abuts against the reagent tray (4).

7. The water sample batch liquid adding device according to claim 6, characterized in that: The outer wall of the reagent tray (4) is wrapped with an insulating layer, and the insulating layer is provided with slots for the reagent tray (4) to engage with the rack (61) and for the arc plate (731) to contact with the reagent tray (4).

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