Full-automatic titration equipment and titration method thereof

Abstract

The invention discloses full-automatic titration equipment and a titration method thereof, and relates to the technical field of titration equipment. Comprising a workbench and a detection cup, a supporting frame is fixed to the top end of the workbench, a mounting frame is fixed to one end of the supporting frame, a plurality of liquid storage tanks are fixed to the top end of the mounting frame, connecting pipes fixedly communicate with the bottom ends of the liquid storage tanks, mounting parts fixedly communicate with the outer walls of the connecting pipes, cavities are formed in the mounting parts, and a plurality of water outlets are formed in the mounting parts; a dropping pipette is inserted into the outer wall of the connecting pipe, and a telescopic rod is fixed to the bottom end of the mounting frame. The fixing frame and the dropping pipette are driven by the telescopic rod to move upwards, the fixing frame moves upwards, and in the moving process, a water pump in the water tank conveys water in the water tank into the mounting piece through a conveying pipe and sprays the water out through a water outlet, so that the inner walls of the connecting pipe and the dropping pipette are cleaned; valves on the connecting pipe and the dropping pipette are both closed in the moving process, and after the connecting pipe and the dropping pipette move to a certain distance, a second rack drives a second gear to rotate.

Description

Technical Field

[0001] The present invention relates to the technical field of titration equipment, and particularly to a fully automatic titration equipment and a titration method thereof. Background Technique

[0002] Titration refers to a means of quantitative analysis and is also a chemical experiment operation. In titrimetric analysis, a reagent solution with a known accurate concentration is dropped into the solution of the substance to be titrated through manual control by observing the scale line with the human eye for reaction and analysis of the results. An existing titration equipment for detection (Publication No.: CN220399361U) has the following disadvantages in use;

[0003] During its use, it is not convenient to clean the burette. After titration, some titration liquids will remain inside the burette, and these liquids adhere to the inner wall of the burette. After a long time, the inner wall of the burette will be contaminated, which will affect the titration result during the next titration. For this reason, this patent proposes a fully automatic titration equipment and a titration method to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a fully automatic titration equipment and a titration method thereof to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A fully automatic titration equipment and a titration method thereof, including a workbench and a detection cup. A support frame is fixed at the top of the workbench, one end of the support frame is fixed with a mounting frame, a plurality of liquid storage tanks are fixed at the top of the mounting frame, a connecting pipe is fixedly communicated with the bottom end of the liquid storage tank, a mounting member is fixedly communicated with the outer wall of the connecting pipe, the interior of the mounting member is a cavity, a plurality of water outlets are opened in the mounting member, a dropping pipe is inserted into the outer wall of the connecting pipe, a telescopic rod is fixed at the bottom end of the mounting frame, a fixed frame is fixed at the telescopic end of the telescopic rod, the fixed frame is fixed to the dropping pipe, a second rack is fixed on one side of the fixed frame, a rotating rod is rotatably connected to one end of the mounting frame, a second gear is fixed on the outer wall of the rotating rod, a first gear is fixed on the outer wall of the rotating rod, a limiting frame is fixed at the bottom end of the mounting frame, a first rack is slidably connected to the top end of the limiting frame, the first rack is engaged with the first gear, a pushing frame is fixed at the bottom end of the first gear, a collection box is installed at the top end of the pushing frame, a water tank is fixed at the bottom end of the mounting frame, and a plurality of transport pipes corresponding to the connecting pipes one by one are fixedly communicated with one side of the water tank, and the transport pipes are fixedly communicated with the mounting member.

[0006] Preferably, a fixing plate is fixed on the side of the first rack close to the limiting frame, a push rod is fixed on one side of the fixing plate, the push rod penetrates and is slidably connected to the limiting frame, and a spring is fixed between the fixing plate and the limiting frame.

[0007] Preferably, an installation groove is formed at the top of the workbench. A lead screw is rotatably connected between the inner walls on both sides of the installation groove. Two sliders are screwed onto the outer wall of the lead screw. A limiting rod is fixed between the inner walls on both sides of the installation groove. The limiting rod passes through the sliders. A first motor is fixed on one side of the workbench. After passing through the workbench, the first motor is fixed to the lead screw. Clamping mechanisms are arranged at the tops of both sliders.

[0008] Preferably, the clamping mechanism includes a connecting frame fixed to the top of the slider. A connecting rod is rotatably connected between the inner walls at both ends of the connecting frame. A plurality of double-headed threaded sleeves are fixed to the outer wall of the connecting rod. Installation blocks are screwed onto the outer walls at both ends of the double-headed threaded sleeve. A fixed rod is fixed between the inner walls at both ends of the connecting frame. The fixed rod passes through the installation block. A clamp is fixed to the top of the installation block. A second motor is fixed to one end of the connecting frame. After the output end of the second motor passes through the connecting frame, it is fixed to the connecting rod.

[0009] Preferably, a plug cover is inserted into the top of the test cup, and an installation pipe is fixedly communicated with the top of the plug cover.

[0010] Preferably, a controller is installed at one end of the installation frame. The controller is electrically connected to the telescopic rod, the first motor, and the second motor.

[0011] Preferably, a liquid inlet pipe is fixedly communicated with the top of the liquid storage tank, a water inlet pipe is fixedly communicated with the other side of the water tank, and valves are installed on the connecting pipe, the drip pipe, the transportation pipe, the liquid inlet pipe, and the installation pipe.

[0012] A usage method of a fully automatic titration device includes the following steps:

[0013] S1: Start the first motor. The first motor drives the lead screw to rotate. The rotation of the lead screw drives the slider to move. The slider drives one group of test cups to move to the bottom of the drip pipe.

[0014] S2: The telescopic rod drives the fixed frame to move downward, so that the drip pipe is inserted into the installation pipe. The valves on the connecting pipe and the drip pipe are opened, and the valve on the installation pipe is opened to start titration.

[0015] S3: After titration is completed, the valves on the connecting pipe and the drip pipe are closed, and the valve on the installation pipe is closed. The telescopic rod drives the fixed frame to move upward, and the first motor drives the lead screw to rotate. The rotation of the lead screw drives the slider to move, so that the group of test cups that have completed titration move to one side of the drip pipe, and the other group moves to the bottom of the drip pipe for the next group of titration.

[0016] S4: By starting the second motor, the second motor drives the connecting rod to rotate. The rotation of the connecting rod drives the double-threaded sleeve to rotate, and the rotation of the double-threaded sleeve drives the mounting block to move, so that the clamp no longer clamps the test cup that has completed titration. In this way, the staff can take away the test cup that has completed titration, replace it with another group of test cups, the second motor drives the connecting rod to reverse, and the clamp moves to clamp the test cup.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The telescopic rod drives the fixed frame and the drip tube to move upward. As the fixed frame moves upward, during the movement, the water pump in the water tank transports the water in the water tank to the mounting part through the transport pipe and sprays it out through the water outlet to clean the inner walls of the connecting pipe and the drip tube. During the movement, the valves on the connecting pipe and the drip tube are both closed. When moving a certain distance, the second rack drives the second gear to rotate. The rotation of the second gear drives the rotating rod to rotate, the rotation of the rotating rod drives the first gear to rotate, and the rotation of the first gear drives the first rack to move forward. In this way, the collection box can be driven to move below the drip tube. Subsequently, the valve on the drip tube is opened, and the water after cleaning flows into the collection box through the drip tube for collection, realizing automatic cleaning, avoiding residual liquid in the drip tube during the next titration and affecting the titration result.

[0019] At the same time, by setting two sliders, the first motor drives the lead screw to rotate. The rotation of the lead screw drives the sliders to move, so that a group of test cups that have completed titration move to one side of the drip tube, and another group moves to the bottom of the drip tube for the next group of titrations, which can improve the titration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the partial structural schematic diagram of the present invention;

[0022] Figure 3 is the top view of the present invention;

[0023] Figure 4 is the front view of the present invention;

[0024] Figure 5 is the schematic diagram of the clamping mechanism of the present invention;

[0025] Figure 6 is the schematic diagram of the clamping mechanism of the present invention after removing the test cup;

[0026] Figure 7 is the schematic diagram of the test cup structure of the present invention.

[0027] In the figure: 1, workbench; 2, support frame; 3, liquid storage tank; 4, connecting pipe; 5, drip tube; 6, limit frame; 7, push rod; 8, spring; 9, first rack; 10, first gear; 11, push frame; 12, collection box; 13, fixed frame; 14, second rack; 15, second gear; 16, water tank; 17, transport pipe; 18, telescopic rod; 19, water inlet pipe; 20, controller; 21, liquid inlet pipe; 22, installation groove; 23, lead screw; 24, limit rod; 25, connecting frame; 26, first motor; 27, detection cup; 28, second motor; 29, fixture; 30, connecting rod; 31, double-headed threaded sleeve; 32, plug cover; 33, installation pipe. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] In titrimetric analysis, a reagent solution with a known accurate concentration is manually controlled by observing the scale line with the human eye and dropped into the solution of the substance to be titrated for reaction and result analysis. The automatic titration device and its titration method provided by the present invention titrate the inside of the detection cup 27 by setting an automatic titration device. And by setting a valve, it can avoid leakage and other conditions during titration. And after titration, the drip tube 5 can be cleaned through the transport pipe 17 to keep the drip tube 5 clean. A liquid level sensor is installed in the liquid storage tank 3 to detect the liquid flowing out of the liquid storage tank 3, so as to achieve accurate titration.

[0030] Such as Figures 1-7As shown in the figure, the present invention provides a technical solution: a fully automatic titration device and its titration method, including a workbench 1 and a detection cup 27. A support frame 2 is fixed at the top of the workbench 1. One end of the support frame 2 is fixed with a mounting frame. A plurality of liquid storage tanks 3 are fixed at the top of the mounting frame. A connecting pipe 4 is fixedly connected to the bottom end of the liquid storage tank 3. A mounting member is fixedly connected to the outer wall of the connecting pipe 4. The interior of the mounting member is a cavity. A plurality of water outlets are provided in the mounting member. A dropping pipe 5 is inserted into the outer wall of the connecting pipe 4. A telescopic rod 18 is fixed at the bottom end of the mounting frame. The telescopic end of the telescopic rod 18 is fixed with a fixed frame 13. The fixed frame 13 is fixed to the dropping pipe 5. A second rack 14 is fixed to one side of the fixed frame 13. One end of the mounting frame is rotatably connected to a rotating rod. A second gear 15 is fixed to the outer wall of the rotating rod. A first gear 10 is fixed to the outer wall of the rotating rod. A limiting frame 6 is fixed at the bottom end of the mounting frame. A first rack 9 is slidably connected to the top end of the limiting frame 6. The first rack 9 meshes with the first gear 10. A pushing frame 11 is fixed to the bottom end of the first gear 10. A collecting box 12 is installed at the top end of the pushing frame 11. A water tank 16 is fixed at the bottom end of the mounting frame. A plurality of transport pipes 17 corresponding to the connecting pipe 4 one by one are fixedly connected to one side of the water tank 16. The transport pipe 17 is fixedly connected to the mounting member. A fixing plate is fixed to the side of the first rack 9 close to the limiting frame 6. A push rod 7 is fixed to one side of the fixing plate. The push rod 7 is inserted and slidably connected on the limiting frame 6. A spring 8 is fixed between the fixing plate and the limiting frame 6.

[0031] It should be noted that a liquid level sensor is installed in the liquid storage tank 3 to detect the liquid flowing out of the liquid storage tank 3, so as to achieve accurate titration. A water pump is installed in the water tank 16. The water outlet of the water pump is fixedly connected to the transport pipe 17. When it is necessary to clean the dropping pipe 5, the telescopic rod 18 drives the fixed frame 13 and the dropping pipe 5 to move upward. As the fixed frame 13 moves upward, during the movement, the water pump in the water tank 16 transports the water in the water tank 16 to the mounting member through the transport pipe 17 and sprays it out through the water outlet to clean the inner walls of the connecting pipe 4 and the dropping pipe 5. During the movement, the valves on the connecting pipe 4 and the dropping pipe 5 are both closed. When moving a certain distance, the second rack 14 drives the second gear 15 to rotate. The rotation of the second gear 15 drives the rotating rod to rotate. The rotation of the rotating rod drives the first gear 10 to rotate. The rotation of the first gear 10 drives the first rack 9 to move forward, so that the collecting box 12 can be driven to move below the dropping pipe 5. Subsequently, the valve on the dropping pipe 5 is opened, and the cleaned water flows into the collecting box 12 through the dropping pipe 5 for collection, realizing automatic cleaning. A fixed pipe is fixedly connected to the bottom end of the collecting box 12. A valve is installed on the fixed pipe. Through the restriction of the spring 8, it is avoided that the first gear 10 rotates easily when the second rack 14 does not contact the second gear 15.

[0032] Such as Figure 4 、 Figure 5 and Figure 6As shown in the figure, an installation groove 22 is formed at the top of the workbench 1. A lead screw 23 is rotatably connected between the inner walls on both sides of the installation groove 22. Two sliders are screwed onto the outer wall of the lead screw 23. A limiting rod 24 is fixed between the inner walls on both sides of the installation groove 22. The limiting rod 24 penetrates through the sliders. A first motor 26 is fixed on one side of the workbench 1. After the first motor 26 penetrates through the workbench 1, it is fixed to the lead screw 23. Clamping mechanisms are arranged at the tops of both sliders. The clamping mechanism includes a connecting frame 25 fixed to the top of the slider. A connecting rod 30 is rotatably connected between the inner walls at both ends of the connecting frame 25. A plurality of double-headed threaded sleeves 31 are fixed to the outer wall of the connecting rod 30. Installation blocks are screwed onto the outer walls at both ends of the double-headed threaded sleeve 31. A fixing rod is fixed between the inner walls at both ends of the connecting frame 25. The fixing rod penetrates through the installation blocks. A clamp 29 is fixed to the top of the installation block. A second motor 28 is fixed to one end of the connecting frame 25. The output end of the second motor 28 penetrates through the connecting frame 25 and is fixed to the connecting rod 30.

[0033] It should be noted that by driving the lead screw 23 to rotate through the first motor 26, the rotation of the lead screw 23 drives the slider to move, so that a group of test cups 27 that have completed titration move to one side of the drip tube 5, and the other group moves to the bottom of the drip tube 5 for the next group of titrations. By starting the second motor 28, the second motor 28 drives the connecting rod 30 to rotate, the rotation of the connecting rod 30 drives the double-headed threaded sleeve 31 to rotate, and the rotation of the double-headed threaded sleeve 31 drives the installation block to move, so that the clamp 29 no longer clamps the test cup 27 that has completed titration. In this way, the staff can take away the test cup 27 that has completed titration and replace it with another group of test cups 27. The second motor 28 drives the connecting rod 30 to reverse, and the clamp 29 moves to clamp the test cup 27.

[0034] As Figure 1 、 Figure 2 、 Figure 3 and Figure 7 As shown in the figure, a plug cover 32 is inserted into the top of the test cup 27, and an installation pipe 33 is fixedly communicated with the top of the plug cover 32. A controller 20 is installed at one end of the installation frame. The controller 20 is electrically connected to the telescopic rod 18, the first motor 26, the liquid level sensor and the second motor 28. A liquid inlet pipe 21 is fixedly communicated with the top of the liquid storage tank 3. A water inlet pipe 19 is fixedly communicated with the other side of the water tank 16. Valves are installed on the connecting pipe 4, the drip tube 5, the transport pipe 17, the liquid inlet pipe 21 and the installation pipe 33.

[0035] It should be noted that valves are installed on the connecting pipe 4, the drip tube 5, the transport pipe 17, the liquid inlet pipe 21 and the installation pipe 33 to achieve sealing and avoid contamination. A valve is installed on the installation pipe 33. After the titration is completed, the valve is closed to avoid liquid leakage.

[0036] A usage method of a fully automatic titration device includes the following steps:

[0037] S1: Start the first motor 26. The first motor 26 drives the lead screw 23 to rotate. The rotation of the lead screw 23 drives the slider to move, and the slider drives one group of test cups 27 to move to the bottom of the drip tube 5.

[0038] S2: The telescopic rod 18 drives the fixing frame 13 to move downward, so that the drip tube 5 is inserted into the installation tube 33. The valves on the connecting tube 4 and the drip tube 5 are opened, and the valve on the installation tube 33 is opened to start titration.

[0039] S3: After titration is completed, the valves on the connecting tube 4 and the drip tube 5 are closed, and the valve on the installation tube 33 is closed. The telescopic rod 18 drives the fixing frame 13 to move upward. The first motor 26 drives the lead screw 23 to rotate. The rotation of the lead screw 23 drives the slider to move, so that the group of test cups 27 that have completed titration move to one side of the drip tube 5, and the other group moves to the bottom of the drip tube 5 for the next group of titration.

[0040] S4: By starting the second motor 28, the second motor 28 drives the connecting rod 30 to rotate. The rotation of the connecting rod 30 drives the double-headed threaded sleeve 31 to rotate. The rotation of the double-headed threaded sleeve 31 drives the installation block to move, so that the clamp 29 no longer clamps the test cup 27 that has completed titration. In this way, the staff takes away the test cup 27 that has completed titration and replaces it with another group of test cups 27. The second motor 28 drives the connecting rod 30 to reverse, and the clamp 29 moves to clamp the test cup 27.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended embodiments and their equivalents.

Claims

1. An automatic titration device, comprising a workbench (1) and a detection cup (27), characterized in that: A support frame (2) is fixed to the top end of the workbench (1). One end of the support frame (2) is fixed with a mounting frame, and a plurality of liquid storage tanks (3) are fixed to the top end of the mounting frame. The bottom end of the liquid storage tank (3) is fixedly communicated with a connecting pipe (4). A mounting member is fixedly communicated with the outer wall of the connecting pipe (4). The interior of the mounting member is a cavity, and a plurality of water outlets are opened in the mounting member. A drip pipe (5) is inserted into the outer wall of the connecting pipe (4). The bottom end of the mounting frame is fixed with a telescopic rod (18). The telescopic end of the telescopic rod (18) is fixed with a fixing frame (13). The fixing frame (13) is fixed to the drip pipe (5). A second rack (14) is fixed to one side of the fixing frame (13). One end of the mounting frame is rotatably connected with a rotating rod. A second gear (15) is fixed to the outer wall of the rotating rod. A first gear (10) is fixed to the outer wall of the rotating rod. A limiting frame (6) is fixed to the bottom end of the mounting frame. A first rack (9) is slidably connected to the top end of the limiting frame (6). The first rack (9) meshes with the first gear (10). A push frame (11) is fixed to the bottom end of the first gear (10). A collection box (12) is installed at the top end of the push frame (11). A water tank (16) is fixed to the bottom end of the mounting frame. A plurality of transport pipes (17) corresponding to the connecting pipe (4) one by one are fixedly communicated with one side of the water tank (16). The transport pipe (17) is fixedly communicated with the mounting member.

2. The fully automatic titration device according to claim 1, characterized in that: A fixing plate is fixed to the side of the first rack (9) close to the limiting frame (6). A push rod (7) is fixed to one side of the fixing plate. The push rod (7) is slidably connected through the limiting frame (6). A spring (8) is fixed between the fixing plate and the limiting frame (6).

3. The fully automatic titration device according to claim 1, characterized in that: An installation groove (22) is opened at the top end of the workbench (1). A lead screw (23) is rotatably connected between the inner walls of both sides of the installation groove (22). Two sliders are screwed onto the outer wall of the lead screw (23). A limiting rod (24) is fixed between the inner walls of both sides of the installation groove (22). The limiting rod (24) penetrates through the slider. A first motor (26) is fixed to one side of the workbench (1). The first motor (26) penetrates through the workbench (1) and is fixed to the lead screw (23). Clamping mechanisms are arranged at the top ends of both sliders.

4. The fully automatic titration device according to claim 3, characterized in that: The clamping mechanism includes a connecting frame (25) fixed to the top end of the slider. A connecting rod (30) is rotatably connected between the inner walls of both ends of the connecting frame (25). A plurality of double-headed threaded sleeves (31) are fixed to the outer wall of the connecting rod (30). Installation blocks are screwed onto the outer walls of both ends of the double-headed threaded sleeve (31). A fixing rod is fixed between the inner walls of both ends of the connecting frame (25). The fixing rod penetrates through the installation block. A clamp (29) is fixed to the top end of the installation block. A second motor (28) is fixed to one end of the connecting frame (25). The output end of the second motor (28) penetrates through the connecting frame (25) and is fixed to the connecting rod (30).

5. An automatic titration device according to claim 1, characterized in that: An insertion cover (32) is inserted into the top end of the test cup (27). A mounting pipe (33) is fixedly communicated with the top end of the insertion cover (32).

6. The fully automatic titration device according to claim 1, characterized in that: A controller (20) is installed at one end of the mounting frame. The controller (20) is electrically connected to the telescopic rod (18), the first motor (26), and the second motor (28).

7. The fully automatic titration device according to claim 1, wherein: The top end of the liquid storage tank (3) is fixedly communicated with a liquid inlet pipe (21), and the other side of the water tank (16) is fixedly communicated with a water inlet pipe (19). Valves are installed on the connecting pipe (4), the drip pipe (5), the transport pipe (17), the liquid inlet pipe (21) and the installation pipe (33).

8. A method for using a fully automatic titration device, characterized in that, Using a fully automatic titration device according to any one of claims 1-7, comprising the following steps: S1: Start the first motor (26), the first motor (26) drives the lead screw (23) to rotate, the rotation of the lead screw (23) drives the slider to move, and the slider drives one set of test cups (27) to move to the bottom of the drip pipe (5). S2: The telescopic rod (18) drives the fixed frame (13) to move downward, so that the drip pipe (5) is inserted into the installation pipe (33). The valves on the connecting pipe (4) and the drip pipe (5) are opened, and the valve on the installation pipe (33) is opened to start titration. S3: After titration is completed, the valves on the connecting pipe (4) and the drip pipe (5) are closed, the valve on the installation pipe (33) is closed, the telescopic rod (18) drives the fixed frame (13) to move upward, the first motor (26) drives the lead screw (23) to rotate, and the rotation of the lead screw (23) drives the slider to move, so that the set of test cups (27) that have completed titration move to one side of the drip pipe (5), and the other set moves to the bottom of the drip pipe (5) for the next set of titrations. S4: By starting the second motor (28), the second motor (28) drives the connecting rod (30) to rotate, the rotation of the connecting rod (30) drives the double-headed threaded sleeve (31) to rotate, and the rotation of the double-headed threaded sleeve (31) drives the installation block to move, so that the clamp (29) no longer clamps the test cup (27) that has completed titration. In this way, the staff takes away the test cup (27) that has completed titration and replaces it with another set of test cups (27). The second motor (28) drives the connecting rod (30) to reverse, and the clamp (29) moves to clamp the test cup (27).

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