Batch liquid adding device for water quality sample

Abstract

The invention discloses a batch liquid adding device for water quality samples, and relates to the technical field of water quality detection.The batch liquid adding device comprises a workbench, a rack, a liquid adding mechanism and a reagent tray, a working groove is vertically dug in the top of the workbench, the rack is rotationally connected to the table top of the workbench and is close to the working groove, and the liquid adding mechanism is installed on the rack; the liquid adding mechanism comprises a plurality of liquid adding nozzles and a rotating assembly; the rotating assembly comprises a rotating disc, a gear and a first sliding groove disc, the rotating disc is provided with a tooth structure, and the gear is installed on the rack and engaged with the rotating disc. The first sliding groove disc abuts against the bottom of the rotary disc, a plurality of arc-shaped grooves are dug in the first sliding groove disc, a plurality of long-strip-shaped grooves are dug in the rotary disc, the ends of the arc-shaped grooves correspond to the ends of the long-strip-shaped grooves, and the liquid adding nozzles penetrate through the arc-shaped grooves and the long-strip-shaped grooves. A plurality of placing holes are formed in the reagent tray, are distributed along the radial direction and are divided into an inner ring and an outer ring; the method and the device have the effects of reducing the workload of workers 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 batch liquid adding device for water quality samples. Background Art

[0002] Water quality samples refer to partial samples of water bodies such as rivers, lakes, and domestic sewage collected for water quality testing. In water quality testing, it is usually necessary to add fixatives, acid solutions, alkaline solutions and other reagents to the samples for auxiliary testing, which can be simply called liquid addition.

[0003] The 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 storing the water quality sample. This step is labor-intensive and relatively error-prone when the detection volume is large. Currently, our company has proposed a fully automatic water quality testing equipment, and the above-mentioned liquid addition is no longer applicable, so a new technical solution is proposed to cooperate. 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] The present application provides a water quality sample batch liquid adding device, which adopts the following technical solution:

[0007] A water sample batch liquid adding device, comprising a workbench, a frame, a liquid adding mechanism and a reagent tray, wherein a working groove is vertically dug on the top of the workbench, 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, and the movable part 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 pipeline, and the end of the liquid adding pipeline 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 top view and has a tooth structure on its side edge. The gear is installed 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 slide plate abuts against the bottom of the turntable, the turntable and the slide plate are coaxial, and the first slide plate is fixedly connected to the movable part of the frame, the turntable is rotatably connected to the movable part of the frame, the first slide plate is circular in top view and is provided with a plurality of arc grooves, the plurality of arc grooves are distributed along the circumference of the slide plate, the turntable is provided with a plurality of long grooves, the plurality of long grooves are distributed along the circumference of the turntable, one end of the arc groove is intersected with one end of the long groove close to the frame, and the other end is intersected with one end of another long groove away from the frame, and the liquid adding nozzle is penetrated 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 also 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 pipeline 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 plan view and has an outer wall provided with a tooth structure. The rack is located on the side of the reagent tray and meshes with the tooth structure of the reagent tray.

[0016] Optionally, it also includes a sensing component and a controller, the controller is electrically connected to the sensing component and the screw slide; the sensing component includes a plurality of energizing needles 1, a plurality of energizing 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 energizing needles 1 are vertically arranged and fixedly installed 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 energizing 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 energizing needles 2 extend outward, the number of the energizing needles 2 is equal to that of the energizing needles 1, and the plurality of energizing needles 1 are provided with resistors of different sizes, when each liquid adding nozzle is aligned with each test tube in the reagent tray one by one, the end of the energizing needle 2 and the end of the energizing needle 1 are in contact with each other; the energizing unit is arranged 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 is in contact with 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, it further includes a detection mechanism for sensing whether there is a test tube in the placement hole of the reagent tray, the detection mechanism includes a floating plate and a plurality of induction sensors, and the induction sensors are electrically connected to the controller;

[0020] A water trough is dug inside the bottom plate and is open at the top, the floating plate is located in the water trough, and the size of the notch of the water trough 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, 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 the floating plate floats in the longitudinal direction;

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

[0022] The bottom of the chute plate 1 is provided with a chute plate 2 with 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 adsorbed 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 associate and pair them;

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

[0025] When receiving the signal of the paired electromagnet feedback after opening, the second driving unit 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 respectively connected to two water inlet holes and overflow holes, 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 an electric valve 1, and the electric valve 1 is electrically connected to the controller, and the controller is configured as: if the screw slide is in a working state, the electric valve 1 is controlled to open.

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

[0029] Optionally, the power-on unit includes an arc plate and a power-on sheet, the power-on sheet is connected to the power supply, and the arc plate is connected to the power-on 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] In summary, 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 groove 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, thereby reducing the workload of the staff, improving work efficiency, and reducing 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 A magnified view of part A;

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

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

[0036] Figure 5 It is a structural schematic diagram of the direction adjustment mechanism in the second embodiment of the present application;

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

[0038] Figure 7 It is a front view of the sensing component in the second embodiment of the present application;

[0039] Figure 8 It is a structural schematic diagram of the liquid adding mechanism in the second embodiment of the present application;

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

[0041] Explanation of the reference numerals: 1. workbench; 2. rack; 3. liquid adding mechanism; 4. reagent tray; 5. working tank; 6. direction adjustment mechanism; 7. induction component; 8. controller; 9. detection mechanism; 21. rotating shaft; 22. swing arm; 23. drive 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. drive 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. induction 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 water quality sample batch liquid adding device.

[0044] Embodiment 1:

[0045] Reference Figure 1 and Figure 2The batch liquid adding device for water quality samples 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 the 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 nozzles 31 to move their positions, wherein the liquid adding nozzles 31 are existing nozzles and will not be described in detail herein. The liquid adding nozzles 31 are connected to a liquid adding pipe (not shown in the figure), and the liquid adding pipe is a hose, which is more convenient for connection with the liquid adding nozzles 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 slide plate 323. The turntable 321 is circular in top view and has a tooth structure on the side edge. The gear 322 is installed on the frame 2. The gear 322 is located on the side of the turntable 321 and meshes with the turntable 321. The bottom of one end of the movable part of the frame 2 is connected with a driving unit 324, wherein the driving 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, so that the rotation speed of the turntable 321 driven by the gear 322 will not be too fast.

[0048] The chute plate 1 323 abuts against the bottom of the rotating disk 321. The rotating disk 321 and the chute plate 1 323 are coaxial and fixed to the movable part of the frame 2. The axis of the rotating disk 321 and the chute plate is provided with a connecting hole for the movable part of the frame 2 to pass through. The movable part passes through the connecting hole and the movable part of the frame 2 and the chute plate 1 323 are fixed by bolts. The rotating disk 321 can rotate along the axis. Among them, the liquid adding nozzle 31 is provided at one end where the arc groove and the long strip groove are mutually connected.

[0049] Reference Figure 3 and Figure 4The chute plate 1 323 is circular in top view and is provided with a plurality of arc grooves, which are distributed along the circumference of the chute plate 1 323 and are arranged obliquely, and the turntable 321 is provided with a plurality of obliquely arranged long grooves, which are distributed along the circumference of the turntable 321, and one end of the arc 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 away from the frame 2, that is, the two ends of each long groove do not correspond to the two ends of the same arc groove, but are staggered, for example: one end of the No. 1 long groove corresponds to one end of the No. 1 arc groove, and the other end of the No. 1 long groove corresponds to the other end of the No. 4 arc groove. This arrangement allows the liquid adding nozzle 31 to pass through and move to the inside along the trajectory of the arc groove and the long groove at the same time. 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 a plurality of placement groups are distributed radially along the reagent tray 4. Example: The placement group can be divided into two inner and outer circles of placement holes, 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 tube can be inserted into a fixed position in the placement hole, and then sent into the working tank 5 by the reagent tray 4. By setting up multiple groups of placement holes, the number of test tubes that can be filled with liquid in one filling operation can be maximized, thereby improving work efficiency.

[0051] Through the above arrangement, when the driving unit 2 324 starts to work, 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 located in the inner circle can be filled with liquid again after the test tubes in the outer circle are filled with liquid, thereby reducing working time and improving work efficiency.

[0052] Reference Figure 1 and Figure 2, the 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, 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, and the bottom of the table of the workbench 1 can be provided with a mounting seat for the power supply motor to be installed, and the motor is fixed to the mounting seat by bolts. Due to the excessive speed of the motor, the speed reducer can also be increased to assist the work, and the speed reducer and the motor are connected by a coupling. Through the above 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, and the test tube can be adjusted to the 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 rotating shaft 21, a swing arm 22, and a driving unit 23 for driving the rotating shaft 21 to rotate. The driving unit 23 may include a motor and a reducer. The rotating 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 may be fixed to the top of the rotating shaft 21 by bolts. One end of the swing arm 22 extends toward the side and is located directly above the working tank 5 when adding liquid. The motor and the axis of the rotating shaft 21 are coaxially fixed. The motor may be fixed to a mounting seat pre-set at the bottom of the table of the workbench 1 by bolts. The rotating shaft 21 may be driven to rotate by the motor, thereby driving the swing arm 22 to rotate. When the liquid adding work is not performed or the reagent tray 4 needs to be placed, the swing arm 22 and even the liquid adding mechanism 3 fixed on the swing arm 22 may be rotated to the side, so as to facilitate the operation. 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, and through holes are respectively opened 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 an external power unit and a reagent box, wherein 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, thereby preventing the pipe from being entangled in the swing arm 22 and hindering the liquid adding work.

[0054] Embodiment 2:

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

[0056] Reference Figure 5 and Figure 6The 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 in plan view 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 meshes with the tooth structure of the reagent tray 4. Therefore, when the rack 61 moves, the reagent tray 4 can be driven to rotate, and then the angle of the reagent tray 4 can be adjusted so that the tube mouth of the test tube in the tray is directly opposite to the bottom of the liquid adding nozzle 31.

[0058] Reference Figure 7 , and also includes a sensing component 7 and a controller 8. The sensing component 7 can feedback the current flowing, and the controller 8 judges the feedback current and analyzes whether it is necessary to continue to adjust the angle. The following is a detailed explanation:

[0059] The induction component 7 includes a plurality of energizing needles 1 71, a plurality of energizing needles 2 72, and a energizing unit 73 for providing current to the energizing needles 2 72. A circle of conductive sheets for current flow is fixedly sleeved on one end of the outer wall of the reagent tray 4. The power supply end of the energizing unit 73 contacts the conductive sheet. The conductive sheet is made of metal, such as copper. The material of the reagent tray can be an insulating material, thereby avoiding energizing the entire reagent tray. Among them, the number of energizing needles 1 71 and energizing needles 2 72 should be more, so that the feedback data can be more accurate. There can be at least 60 energizing needles 1 71 and energizing needles 2 72 distributed. A bottom plate 51 with a circular cross-section is provided at the bottom of the working groove 5, and a plurality of energizing needles 71 are vertically arranged and fixedly installed 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 is in contact with 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 is in contact with the bottom plate 51, the energizing needle 2 72 extending from its outer wall can contact the energizing needle 1 71.

[0060] Reference Figure 7, the power-on unit 73 includes an arc plate 731 and a power-on sheet 732, both of which are made of metal, such as copper; the arc plate 731 is arc-shaped when viewed from above, and the protruding end abuts against the reagent tray 4, one end of the power-on sheet 732 can be welded to the arc plate 731, and the other end of the power-on sheet 732 is connected to a power source, so that the power-on needle 71 on the reagent tray 4 can be energized, and an elastic member is provided at one end of the power-on sheet 732 away from the reagent tray 4, wherein the elastic member can be a spring, which is used to assist the arc plate 731 to abut against the conductive sheet, the induction component 7 and the lead screw slide 62 are electrically connected to the controller 8, and the controller is configured as follows:

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

[0062] Each current value is analyzed, and a preset database is searched to determine matching control parameters, and the lead screw slide 62 is controlled to respond based on the control parameters.

[0063] For example: each energized needle 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 72 for comparison set in advance by the staff according to the resistance size, such as: the current value flowing in the energized needle 72 numbered X1 is preset to 1A, the current value flowing in the energized needle 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 72 numbered X1 is 2A, and the current value flowing in the energized needle 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 upper liquid adding nozzle 31, 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 connection seat with a fixed energizing needle on the top, and the energizing needle is inserted into the connection 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 of the top of the energizing needle 1 71 is more convenient 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 through, the energizing needle 1 71 can be slightly moved by the resistance, thereby reducing the damage caused by the inability of the energizing needle 1 71 to avoid.

[0065] The number of energizing needles 1 71 and energizing needles 2 72 is equal, and the distribution spacing is equal, so that multiple energizing needles 1 71 and multiple energizing needles 2 72 can contact at the same time. Multiple energizing needles 1 71 are respectively set to resistors of different sizes, that is, each energizing needle 1 71 contains a different resistance value. For this setting, different materials or needle bodies of different volumes can be selected. For example: the energizing needle 1 71 with the smallest resistance value selects a needle body with a diameter of 0.1mm, and the energizing needle 1 71 with the largest resistance value selects a needle body of 1mm, and the diameters of the remaining needle bodies increase from small to large. With the feedback of the current flowing between the different energizing needles 1 71 and energizing needles 2 72 after contact, it can be analyzed whether the direction of the reagent tray 4 is correct.

[0066] The current between each energizing needle 1 71 and energizing needle 2 72 when the reagent tray 4 is correctly placed can be recorded in the controller 8 in advance. Since the resistance values ​​in the energizing needle 2 72 are different, if the current data fed back by the induction component 7 cannot correspond to the current data recorded in advance 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 is adjusted, that is, when the reagent tray 4 is driven to rotate by the rack 61, the contact between the energizing needle 1 71 and the energizing needle 2 72 will generate currents of different sizes and feedback. The controller 8 can determine whether it is rotated to the correct position by analyzing the current feedback. Among them, the current size needs to be kept within 10A to prevent accidents caused by human body accidental touch. For example, if the resistance of the energizing needle 1 71 with the smallest resistance can be set to 25Ω under the voltage of 220V, the current size is 8.8A, and the resistances of the remaining energizing needles 1 71 increase in sequence.

[0067] Reference Figure 6 and Figure 7 , and also includes a detection mechanism 9, the detection mechanism 9 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 dug longitudinally on the upper surface of the bottom plate 51 and the top is open. The floating plate 91 is located in the water trough, and the size of the floating plate 91 is larger than the groove of the water trough, that is, the size of the top opening of the bottom plate 51. The bottom plate 51 is provided with a water inlet hole and an overflow hole, wherein the water inlet hole is located at the bottom of the water trough and below the floating plate 91, and the overflow hole is located 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 floats longitudinally, that is, a groove can be dug longitudinally on the inner side wall of the water trough, and a convex block corresponding to the groove is longitudinally arranged on the side edge of the floating plate 91, and the convex block is engaged and slides in the groove. The above arrangement can prevent the floating plate 91 from rotating while floating.

[0069] The bottom of the reagent tray 4 is provided with openings at the positions where each test tube is placed, and the size of the openings is smaller than the diameter of the test tube, so as to prevent the test tube from falling. A plurality of 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, 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 floating plate 91 floats, thereby driving the inductive sensor 92 to rise upward, so that the detection head of the inductive sensor 92 can extend into the opening at the bottom of the reagent tray 4 and contact the test tube, and then can 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, and 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, and the end of the liquid adding pipeline of the liquid adding nozzle 31 is connected to the nozzle tail 312 and each liquid adding pipeline is respectively installed with an electric valve 2 326, which can be a solenoid valve connected to the liquid adding pipeline through a flange. An electromagnet 327 is fixed at the bottom of the nozzle head 311, and a magnetic part adsorbed by the power supply magnet 327 is fixed to the nozzle tail 312. The magnetic part can be an iron sheet, so that the electromagnet 327 can adsorb the magnetic part when it is energized, and the nozzle tail 312 can be driven to move. Multiple liquid adding nozzles 31 correspond to the inductive sensors 92 respectively, and one liquid adding nozzle 31 can correspond to several inductive sensors 92, that is, individual liquid adding nozzles 31 correspond to inductive sensors 92 in the outer circle, and liquid adding work needs to be performed according to the feedback of the inductive sensors 92. After turning to the inner circle, there is still a test tube directly below it, and it still needs to correspond to one inductive sensor 92. One liquid adding nozzle 31 corresponds to at most two inductive sensors 92.

[0071] The liquid adding nozzle 31 is electrically connected to the electric valve 2 326 and the electromagnet 327, and 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 number of the induction sensor 92 and the number of the liquid adding nozzle 31, and perform associated pairing; the number of the induction sensor 92 can be A1, A2, A3..., the number of the liquid adding nozzle 31 can be B1, B2, B3..., A1 is paired with B1, A2 is paired with B2, and by taking this as an example, all the liquid adding nozzles 31 and the induction sensor 92 can be paired one by one. Pairing the two makes it easier to determine whether a certain liquid adding nozzle 31 needs to be added.

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

[0074] If any of the induction sensors 92 feeds back a signal indicating that there is a test tube above, 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 and facilitating 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 act; this step is to control the turntable 321 to rotate.

[0076] When the action completion signal fed back by the driving unit 2 324 is received, the electric valve 2 326 corresponding to 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, and by controlling different electric valves 2 326 to open, when the reagent tray 4 is not full of reagents, targeted work can still be performed according to the number and position of the test tubes placed.

[0077] Through this step, the induction sensor can be used to accurately determine which liquid adding nozzle 31 should be used for liquid adding. 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 nozzle tail 311 can be left in place when not in use, so that too many liquid adding nozzles 31 will not move at the same time, hindering the staff from observing or supervising the working status of the device; connecting the liquid adding pipeline to the nozzle tail 312 can effectively prevent reagent residue in the nozzle head 311 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 hole and the overflow hole respectively. Water tank 1 is close to the water inlet end of the sink, that is, close to the water inlet hole, and water tank 2 is close to the water outlet end of the sink, so that the water flow can be circulated. 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 with electric valve 1 93, which can be flange-connected. Electric valve 1 93 and screw slide 62 are electrically connected to controller 8, and controller 8 is configured as follows: if screw slide 62 is in working state, electric valve 1 93 is controlled to open.

[0080] Through the above arrangement, water can be added to the water tank while the angle of the reagent tray 4 is adjusted. After the water in the water tank is added, the float plate 91 will float up, so that the induction sensor 92 can contact the bottom of the test tube in the reagent tray 4, so as to feedback which placement hole has the test tube, thereby controlling the upper liquid adding mechanism 3 to add liquid. If the angle of the reagent tray 4 is still not adjusted when the water is full, the water can 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, that is, once the reagent tray 4 is placed, the adjustment time is not enough to fill the water tank with water or to make the float plate 91 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 function of adjusting the angle; 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 the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A water sample batch liquid adding device, characterized in that: The invention comprises a workbench (1), a frame (2), a liquid adding mechanism (3) and a reagent tray (4); the top of the workbench (1) is provided with a working groove (5) in the vertical direction; 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 installed on the movable part 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 positions. The liquid adding nozzles (31) are connected to a liquid adding pipeline, and the end of the liquid adding pipeline is externally connected to a power unit and a reagent box; The rotating assembly (32) comprises a rotating disk (321), a gear (322) and a first slide plate (323); the rotating disk (321) is circular in plan view and has a tooth structure on its side edge; the gear (322) is mounted on a frame (2); a second drive unit (324) is connected to the bottom of one end of the frame (2); 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); and the gear (322) is meshed with the tooth structure of the rotating disk (321); The slide plate (323) is in contact with the bottom of the rotating disk (321), the rotating disk (321) and the slide plate (323) are coaxial, and the slide plate (323) is fixedly connected to the movable part of the frame (2), and the rotating disk (321) is rotatably connected to the movable part of the frame (2), the slide plate (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 slide plate (323), the rotating disk (321) is provided with a plurality of long grooves, and the plurality of long grooves are distributed along the circumference of the rotating disk (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), and the liquid adding nozzle (31) is penetrated 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).

2. The water quality sample batch liquid adding device according to claim 1, characterized in that: It also includes an adjustment mechanism (6) for adjusting the angle of the reagent tray (4), the adjustment mechanism (6) being installed in the workbench (1), the reagent tray (4) being rotatably connected in the working tank (5), and the adjustment mechanism (6) being connected to the reagent tray (4); The frame (2) comprises a rotating shaft (21), a swing arm (22) and a driving unit (23) for driving the rotating shaft (21) to rotate. The rotating 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 rotating shaft (21). One end of the swing arm (22) extends out and is located above the working tank (5) in a liquid adding working state. A protective cover (24) for a liquid adding pipeline to pass through is connected above the swing arm (22). The driving unit (23) is arranged on the workbench (1) and connected to the rotating shaft (21).

3. The water quality sample batch liquid adding device according to claim 2, characterized in that: The direction adjustment mechanism (6) comprises a rack (61) and a screw slide (62) for driving the rack (61) to move, and the rack (61) is fixed to a slider of the screw slide (62); The reagent tray (4) is circular in plan 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 meshed with the tooth structure of the reagent tray (4).

4. The water sample batch liquid adding device according to claim 3, characterized in that: 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 first energizing needles (71), a plurality of second energizing needles (72) and a power supply unit (73); a bottom plate (51) with a circular cross section is provided at the bottom of the working tank (5); the plurality of first 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 second 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 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); Each current value is analyzed, and a preset database is searched to determine matching control parameters, and the lead screw slide (62) is controlled to respond based on the control parameters.

5. The water quality sample batch liquid adding device according to claim 4, 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) comprising 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 trough opening 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); 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 a through opening at the position where each test tube is placed, and the size of the through 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) is arranged corresponding to the position of the through opening at the bottom of the reagent tray (4); The bottom of the first slide plate (323) is provided with a second slide plate (325) having the same structure as the first slide plate (323), and the second slide plate (325) is provided with the above-mentioned arc groove. The liquid adding nozzle (31) comprises a nozzle head (311) and a nozzle tail (312), the nozzle head (311) is located in the arc groove in the first slide plate (323), and the nozzle tail (312) is located in the arc groove in the second slide plate (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 (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 second electric valve (326) are electrically connected to the controller (8), and the controller (8) is configured as follows: Entering the predefined number of the sensing sensor (92) and the number of the liquid adding nozzle (31), and performing associative pairing; If any one 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; When receiving the signal of turning on from the paired electromagnet (327), the second driving unit (324) is controlled to act; 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.

6. The water quality sample batch liquid adding device according to claim 5, characterized in that: The water supply unit comprises 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 hole and the overflow hole respectively. The water tank 1 is arranged close to the water inlet hole of the water tank, and the water tank 2 is arranged close to 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 as follows: if the screw slide (62) is in a working state, the electric valve 1 (93) is controlled to open.

7. The water quality sample batch liquid adding device according to claim 6, characterized in that: The top of the current-carrying needle (71) is arc-shaped, and a plurality of springs (74) are fixed to the bottom plate (51). The bottoms of the plurality of current-carrying needles (71) are respectively fixed to the upper ends of the springs (74).

8. The water quality sample batch liquid adding device according to claim 4, characterized in that: The power supply unit (73) comprises 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 source, and the arc plate (731) is connected to the power supply sheet (732) and the protruding end thereof abuts against the reagent tray (4).

9. The water sample batch liquid adding device according to claim 8, 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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