Full-automatic movable single-channel liquid adding device

Abstract

The utility model discloses a full-automatic movable single-channel liquid adding device, and particularly relates to the technical field of chemical analysis instruments, which comprises a base, a workbench is arranged above the base, a lifting component is arranged between the base and the workbench, a bottom tray is arranged on the upper surface of the workbench, and the lifting component is arranged on the lower surface of the workbench. A fixing assembly is arranged on the upper surface of the workbench, a test tube rack is connected to the upper portion of the bottom tray, a second containing groove is formed in the upper surface of the bottom tray, a first containing groove is formed in the test tube rack, a mounting base is welded to the upper surface of the workbench, and a mechanical arm is connected to the surface of the mounting base through a moving assembly. Two electric push rods are symmetrically arranged in the mechanical arm, the output ends of the two electric push rods are jointly connected with an adding cavity, and a plurality of sample injection needles are arranged on the bottom wall of the adding cavity at equal intervals, so that a bottom tray and a test tube rack can be conveniently taken down from a workbench, and an organic reagent, an extracting agent and the like can be conveniently added when a next batch of test tubes are pretreated.

Description

Technical Field

[0001] This utility model relates to the field of chemical analysis instrument technology, and more specifically, to a fully automatic, mobile, single-channel liquid addition device. Background Technology

[0002] When performing chemical tests using analytical instruments, the first step is to prepare a series of standard solutions and a standard blank solution, examine the linearity of the sample to be tested, and plot a standard curve. Then, the sample is digested and introduced into the analytical instrument for detection. However, when pre-treating large batches of samples, it is necessary to add acid, organic reagents, extractants, etc. to the sample reagents for pretreatment.

[0003] This process is time-consuming, labor-intensive, and can have adverse effects on human health. In particular, it is not suitable for large batches of samples. In addition, some bottom trays and test tube racks for placing test tubes are usually not fixed, so once the bottom trays and test tube racks are full of test tubes, they cannot be moved. This affects the addition of organic reagents, extractants, etc. when the device pre-treats the next batch of test tubes.

[0004] Therefore, a fully automatic, mobile, single-channel liquid dispensing device was designed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a fully automatic mobile single-channel liquid dispensing device to solve the problems mentioned above in the background technology and in actual production applications.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fully automatic movable single-channel liquid addition device, comprising a base, a worktable disposed above the base, a lifting assembly disposed between the base and the worktable, a bottom tray disposed on the upper surface of the worktable, fixing assemblies symmetrically disposed on the upper surface of the worktable and on both sides of the bottom tray for limiting and fixing the bottom tray, a test tube rack connected above the bottom tray, a second placement groove disposed on the upper surface of the bottom tray, a first placement groove disposed on the test tube rack, a mounting base welded to the upper surface of the worktable and on one side of the bottom tray, a robotic arm connected to the surface of the mounting base via a moving assembly, two electric push rods symmetrically disposed inside the robotic arm, the output ends of the two electric push rods being connected to an addition chamber, and a plurality of injection needles being disposed at equal intervals on the bottom wall of the addition chamber.

[0007] Preferably, the fixing component includes a limiting groove and a limiting block. The bottom tray has symmetrically opened limiting grooves on both sides, and the worktable has symmetrically opened mounting grooves on the upper surface. A connecting rod is movably arranged in each of the two mounting grooves. One end of the connecting rod is connected to the limiting block through a connecting block. One end of the limiting block is inserted into the limiting groove opened in the side wall of the bottom tray. A compression spring is sleeved on the outside of the connecting rod. A toggle rod is fixedly connected to the outside of one end of the connecting rod. The upper surface of the worktable has a slot that communicates with the mounting groove.

[0008] Preferably, the lifting assembly includes a bidirectional threaded screw, sliding blocks, and an arm. An adjustment groove is provided on the upper surface of the base. The bidirectional threaded screw is rotatably connected in the adjustment groove. Two sliding blocks are symmetrically threaded on the outer side of the bidirectional threaded screw. The two sliding blocks are hinged to the bottom wall of the worktable and connected to the arm.

[0009] Preferably, one end of the bidirectional threaded screw is connected to an adjustment knob for rotating and adjusting the bidirectional threaded screw, and the end of the bidirectional threaded screw away from the adjustment knob is rotatably connected in the adjustment groove. A telescopic rod is connected to each of the four corners of the base, and the top ends of the four telescopic rods are respectively connected to the bottom wall of the workbench.

[0010] Preferably, the moving component includes a drive screw, a slider, and a connecting post. The mounting base has a groove, and the drive screw is rotatably connected in the groove. The slider is threaded onto the outer side of the drive screw. The surface of the slider is fixedly connected to the robotic arm through the connecting post. One end of the drive screw is provided with a servo motor that drives the drive screw. The servo motor at one end of the drive screw is bolted to the surface of the mounting base.

[0011] Preferably, a sample injection tube is connected to the addition chamber, one end of which is movably passed through the top of the robotic arm, and the end of the sample injection tube away from the addition chamber is connected to the added reagent. The test tube rack is available in five different sizes.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. Compared with existing technologies, the addition of multiple injection needles to the bottom wall of the chamber allows for the simultaneous addition of organic reagents and extractants to multiple test tubes during pretreatment. This structure saves manpower and time, thereby improving work efficiency. Simultaneously, the compression spring presses the connecting block, causing it to push the limiting block towards the limiting groove on the side wall of the bottom tray, thus securing the bottom tray. This structure allows for quick disassembly or installation of the bottom tray and test tube rack from the workbench surface, facilitating their removal and enabling the addition of organic reagents and extractants to the next batch of test tubes during pretreatment.

[0014] 2. Compared with the prior art, the test tube rack is equipped with five specifications, corresponding to test tubes of 10mL, 25mL, 50mL, 100mL and 250mL respectively, which can adapt to different experimental requirements and greatly expand the scope of application and applicable scenarios of this utility model. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a cross-sectional view of the workbench of this utility model.

[0017] Figure 3 This is a schematic diagram of section A in the cross-sectional view of the workbench of this utility model.

[0018] Figure 4 This is a cross-sectional view of the robotic arm of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the base of this utility model.

[0020] The attached figures are labeled as follows: 1. Base; 2. Workbench; 3. Bottom tray; 4. Test tube rack; 5. First placement slot; 6. Second placement slot; 7. Mounting base; 8. Slide groove; 9. Drive screw; 10. Slider; 11. Connecting column; 12. Robotic arm; 13. Addition chamber; 14. Injection needle; 15. Electric push rod; 16. Injection tubing; 17. Limiting groove; 18. Limiting block; 19. Connecting block; 20. Mounting groove; 21. Connecting rod; 22. Compression spring; 23. Actuating rod; 24. Slot; 25. Adjustment groove; 26. Bidirectional threaded screw; 27. Sliding block; 28. Arm; 29. ​​Telescopic rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] As attached Figures 1 to 5The device shown is a fully automatic movable single-channel liquid dispensing device, including a base 1, a workbench 2 above the base 1, a lifting assembly between the base 1 and the workbench 2, a bottom tray 3 on the upper surface of the workbench 2, and fixing assemblies symmetrically arranged on the upper surface of the workbench 2 on both sides of the bottom tray 3 to limit and fix the bottom tray 3. A test tube rack 4 is connected above the bottom tray 3, a second placement groove 6 is provided on the upper surface of the bottom tray 3, and a first placement groove 5 is opened on the test tube rack 4. A mounting base 7 is welded to the upper surface of the workbench 2 on one side of the bottom tray 3. A robotic arm 12 is connected to the surface of the mounting base 7 through a moving assembly. Two electric push rods 15 are symmetrically arranged inside the robotic arm 12. The output ends of the two electric push rods 15 are connected to an addition chamber 13. Several injection needles 14 are evenly arranged on the bottom wall of the addition chamber 13. An injection tubing 16 is connected to the addition chamber 13. One end of the injection tubing 16 is movably passed through the top of the robotic arm 12, and the end of the injection tubing 16 away from the addition chamber 13 is connected to the reagent to be added.

[0024] In use, the reagent to be added is delivered to the addition chamber 13 through the injection tube 16, and then injected into the test tubes placed on the bottom tray 3 and test tube rack 4 through the injection needle 14. Then, the robotic arm 12 is moved by the moving component on the mounting base 7, so that the multiple injection needles 14 on the robotic arm 12 move above the next row of test tubes and then inject the reagent. During the injection, the addition chamber 13 and the multiple injection needles 14 can be pushed down by the two electric push rods 15, so that the bottom of the injection needle 14 is close to the test tube, so that the injected reagent can be accurately dripped into the test tube. When it is necessary to pre-treat the samples in the next batch of test tubes, the limiting component on the bottom tray 3 can be released, and then the bottom tray 3 and test tube rack 4 can be removed from the workbench 2, and then the next batch of test tube samples to be pre-treated can be placed in. The test tube rack 4 is provided with five sizes, corresponding to 10mL, 25mL, 50mL, 100mL and 250mL test tubes respectively.

[0025] Example 2

[0026] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 5 As shown below, see details:

[0027] In a preferred embodiment, the fixing component includes a limiting groove 17 and a limiting block 18. Limiting grooves 17 are symmetrically formed on both sides of the bottom tray 3. Mounting grooves 20 are symmetrically formed on the upper surface of the worktable 2. Connecting rods 21 are movably arranged in both mounting grooves 20. One end of the connecting rod 21 is rotatably connected to a connecting block 19. The top of the connecting block 19 is fixedly connected to the limiting block 18. One end of the limiting block 18 is inserted into the limiting groove 17 formed on the side wall of the bottom tray 3. A compression spring 22 is sleeved on the outside of the connecting rod 21. A toggle rod 23 is fixedly connected to the outside of one end of the connecting rod 21. A slot 24 communicating with the mounting groove 20 is formed on the upper surface of the worktable 2. Further, through... The actuating rod 23 pulls the connecting rod 21, causing the connecting rod 21 to pull the limiting block 18 through the connecting block 19, thereby releasing the insertion connection between the limiting block 18 and the limiting groove 17 opened on the side wall of the bottom tray 3. Finally, the actuating rod 23 slides to the slot 24, and then the actuating rod 23 is rotated to engage with the slot 24, thereby limiting the connecting rod 21, the connecting block 19, and the limiting block 18. Similarly, the limiting block 18 set on the other side of the bottom tray 3 is moved. Finally, the bottom tray 3, the test tube rack 4, and the test tubes that have been pretreated and placed on it can be removed, and then the next batch of pretreated test tube samples can be fixedly placed.

[0028] In a preferred embodiment, the lifting assembly includes a bidirectional threaded screw 26, sliding blocks 27, and an arm 28. An adjustment groove 25 is provided on the upper surface of the base 1, and the bidirectional threaded screw 26 is rotatably connected within the adjustment groove 25. One end of the bidirectional threaded screw 26 is connected to an adjustment knob for rotating the screw. Two sliding blocks 27 are symmetrically threaded onto the outer side of the bidirectional threaded screw 26. The two sliding blocks 27 are hinged to the bottom wall of the worktable 2, and the arm 28 is connected to them. A telescopic rod 29 is connected to each of the four corners of the base 1, with the tops of the four telescopic rods 29 respectively... The device is connected to the bottom wall of the workbench 2. Furthermore, during use, the bidirectional threaded screw 26 can be adjusted by adjusting the knob at one end of the bidirectional threaded screw 26. Then, the bidirectional threaded screw 26 drives two sliding blocks 27 to move closer or further apart. Then, the two arms 28 set between the two sliding blocks 27 and the bottom wall of the workbench 2 push the workbench 2 and the bottom tray 3 and test tube rack 4 set on the workbench 2 to adjust the height. The height of the workbench 2 can be adjusted according to the user's usage habits.

[0029] In a preferred embodiment, the moving assembly includes a drive screw 9, a slider 10, and a connecting post 11. A groove 8 is provided on the mounting base 7, and the drive screw 9 is rotatably connected within the groove 8. The slider 10 is threaded onto the outer side of the drive screw 9. The surface of the slider 10 is fixedly connected to the robotic arm 12 via the connecting post 11. A servo motor is provided at one end of the drive screw 9 to drive it, and this servo motor is bolted to the surface of the mounting base 7. Furthermore, when the robotic arm 12 and the injection needles 14 mounted on it are moved laterally to add reagents to the test tube, the drive screw 9 can be driven to rotate by the servo motor. The rotated drive screw 9 then engages with the threaded slider 10, causing the slider 10 to drive the robotic arm 12 laterally via the connecting post 11. This facilitates the lateral movement of multiple injection needles 14 to add reagents to the test tube.

[0030] The working process of this utility model is as follows: First, the reagent to be added is delivered to the addition chamber 13 through the injection tube 16. Then, it is injected into the test tube placed on the bottom tray 3 and test tube rack 4 through the injection needle 14. Subsequently, the drive screw 9 is driven to rotate by the servo motor. Then, the driven screw 9 is screwed into the thread of the slider 10, so that the slider 10 drives the robotic arm 12 to move laterally through the connecting column 11. This facilitates the lateral movement of multiple injection needles 14 to add reagents into the test tube. When injecting reagents, the addition chamber 13 and multiple injection needles 14 can be pushed down by two electric push rods 15, so that the bottom of the injection needle 14 is close to the test tube, so that the injected reagent can be accurately dripped into the test tube.

[0031] When the samples in the next batch of test tubes need to be pretreated, the connecting rod 21 is pulled by the lever 23, so that the connecting rod 21 pulls the limiting block 18 through the connecting block 19, thereby releasing the insertion connection between the limiting block 18 and the limiting groove 17 opened on the side wall of the bottom tray 3. Finally, the lever 23 slides to the slot 24, and then the lever 23 is rotated so that the lever 23 is engaged in the slot 24, thereby limiting the connecting rod 21, the connecting block 19, and the limiting block 18. Similarly, the limiting block 18 set on the other side of the bottom tray 3 is moved. Finally, the bottom tray 3, the test tube rack 4, and the test tubes on it that have been added with pretreatment reagents can be removed, and then the next batch of pretreated test tube samples can be fixedly placed. The above is the working principle of this fully automatic movable single-channel liquid addition device.

Claims

1. A fully automatic, movable, single-channel liquid dispensing device, comprising a base (1), characterized in that: A workbench (2) is provided above the base (1). A lifting assembly is provided between the base (1) and the workbench (2). A bottom tray (3) is provided on the upper surface of the workbench (2). A fixing assembly for limiting and fixing the bottom tray (3) is symmetrically provided on the upper surface of the workbench (2) and on both sides of the bottom tray (3). A test tube rack (4) is connected above the bottom tray (3). A second placement groove (6) is provided on the upper surface of the bottom tray (3). A first placement groove (5) is provided on the test tube rack (4). A mounting base (7) is welded on the upper surface of the workbench (2) and on one side of the bottom tray (3). A robotic arm (12) is connected to the surface of the mounting base (7) through a moving assembly. Two electric push rods (15) are symmetrically arranged inside the robotic arm (12). The output ends of the two electric push rods (15) are connected to an addition chamber (13). Several injection needles (14) are arranged at equal intervals on the bottom wall of the addition chamber (13).

2. The fully automatic, mobile, single-channel liquid dispensing device according to claim 1, characterized in that: The fixing component includes a limiting groove (17) and a limiting block (18). The bottom tray (3) has symmetrically opened limiting grooves (17) on both sides. The worktable (2) has symmetrically opened mounting grooves (20) on its upper surface. A connecting rod (21) is movably installed in each of the two mounting grooves (20). One end of the connecting rod (21) is connected to the limiting block (18) through a connecting block (19). One end of the limiting block (18) is inserted into the limiting groove (17) opened on the side wall of the bottom tray (3). A compression spring (22) is sleeved on the outside of the connecting rod (21). A toggle rod (23) is fixedly connected to the outside of one end of the connecting rod (21). A slot (24) is opened on the upper surface of the worktable (2) and communicates with the mounting groove (20).

3. The fully automatic, mobile, single-channel liquid dispensing device according to claim 1, characterized in that: The lifting assembly includes a bidirectional threaded screw (26), a sliding block (27), and an arm (28). An adjustment groove (25) is provided on the upper surface of the base (1). The bidirectional threaded screw (26) is rotatably connected in the adjustment groove (25). Two sliding blocks (27) are symmetrically threaded on the outer side of the bidirectional threaded screw (26). The two sliding blocks (27) are hinged to the bottom wall of the worktable (2) and the arm (28).

4. The fully automatic, mobile, single-channel liquid dispensing device according to claim 3, characterized in that: One end of the bidirectional threaded screw (26) is connected to an adjustment knob for rotating the bidirectional threaded screw (26). The end of the bidirectional threaded screw (26) away from the adjustment knob is rotatably connected in the adjustment groove (25). A telescopic rod (29) is connected to each of the four corners of the base (1). The top ends of the four telescopic rods (29) are respectively connected to the bottom wall of the worktable (2).

5. The fully automatic, mobile, single-channel liquid dispensing device according to claim 1, characterized in that: The moving component includes a drive screw (9), a slider (10), and a connecting post (11). The mounting base (7) has a groove (8) in which the drive screw (9) is rotatably connected. The slider (10) is threaded on the outside of the drive screw (9). The surface of the slider (10) is fixedly connected to the robotic arm (12) through the connecting post (11). One end of the drive screw (9) is provided with a servo motor that drives the drive screw (9). The servo motor provided at one end of the drive screw (9) is bolted to the surface of the mounting base (7).

6. The fully automatic, mobile, single-channel liquid dispensing device according to claim 1, characterized in that: The addition chamber (13) is connected to a sample injection tube (16). One end of the sample injection tube (16) is movably passed through the top of the robotic arm (12). The end of the sample injection tube (16) away from the addition chamber (13) is connected to the added reagent. The test tube rack (4) is provided with five specifications.

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