Rapid titration device

Abstract

The utility model belongs to the technical field of drug inspection and analysis, and particularly relates to a rapid titration device which comprises a workbench, an electric telescopic rod is arranged at the top of the workbench, a titration assembly is installed on the outer side of the electric telescopic rod, a rotary mixing device is arranged in the center of the workbench, and the titration assembly comprises a liquid suction cylinder; a first conical hole is formed in the bottom of the liquid suction cylinder, a second conical hole is formed in the outer side of the liquid suction cylinder, a first conical pipe is arranged on the first conical hole, the upper portion of the first conical pipe is wide, the lower portion of the first conical pipe is narrow, a first conical block and a first fixing block are arranged in the first conical pipe, and the first conical block is located in the first conical hole. A first movable rod is arranged at the bottom of the first conical block, the bottom of the first movable rod penetrates out of the first fixed block and is provided with a first limiting disc, and the first movable rod is sleeved with a first spring. The device does not need to switch modes, can directly carry out titration, and does not need to add any electric appliance element, so that the cost is saved, and the maintenance is also very convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of drug inspection and analysis, and specifically relates to a rapid titration device. Background Art

[0002] Titration analysis is a commonly used method in drug testing. During titration, a standard titration solution is loaded into a burette, and then added dropwise through the burette in a vertical manner to a conical flask or conical flask containing a certain amount of the solution of the substance to be tested. Based on the concentration of the standard solution and the volume consumed, the content of the substance to be tested can be calculated.

[0003] However, existing burettes usually require manual operation to allow the solution to enter the conical flask, and then the solution is reacted with the reagent by holding the burette. This operation mode is not only inconvenient, but also has a low titration speed. In addition, although some automatic burettes can absorb liquid through the piston, the titration mode still needs to be manually switched, which increases the complexity of the operation and the possibility of error.

[0004] There is also an existing method of automatically switching by adding an electric control valve without manual switching, but this not only requires increased energy consumption, but also increases subsequent costs and causes trouble for subsequent maintenance.

[0005] Therefore, we propose a rapid titration device, which not only does not need to switch modes but can directly perform titration, and the device does not need to add any electrical components, which not only saves costs but also makes maintenance convenient. Utility Model Content

[0006] The purpose of the utility model is to provide a fast titration device, which not only does not need to switch modes but also can directly perform titration. At the same time, the device does not need to add any electrical components, which not only saves costs but also is convenient for maintenance.

[0007] The technical solutions adopted in this utility are as follows:

[0008] A rapid titration device, comprising a workbench, characterized in that: an electric telescopic rod is arranged on the top of the workbench, a titration assembly is installed on the outer side of the electric telescopic rod, and a rotating mixing device is arranged at the center of the workbench;

[0009] The titration assembly comprises a pipette, a piston assembly is arranged inside the pipette, a first conical hole is opened at the bottom of the pipette, a second conical hole is opened outside the pipette, a first conical tube is arranged on the first conical hole, the first conical tube is wide at the top and narrow at the bottom, a first conical block and a first fixed block are arranged inside the first conical tube, the first conical block is located inside the first conical hole, a first movable rod is arranged at the bottom of the first conical block, the first fixed block passes through the bottom of the first movable rod and is installed with a first limiting disk, a first spring is sleeved on the first movable rod, and the first spring is located between the first fixed block and the first limiting disk;

[0010] A second conical tube is arranged on the second conical hole, the second conical tube is narrow at the top and wide at the bottom, a second conical block and a second fixed block are arranged inside the second conical tube, the second conical block is located inside the second conical hole, and a second movable rod is arranged at the bottom of the second conical block, the bottom of the second movable rod passes through the second fixed block and is installed with a second limiting plate, and a second spring is sleeved on the second movable rod, and the second spring is located between the second fixed block and the second limiting plate.

[0011] Further, the rotating mixing device includes a first gear rotatably arranged in the middle of the workbench, a placement shell is rotatably arranged on the top of the workbench, a second gear is arranged outside the placement shell, and the second gear is meshed with the first gear;

[0012] A first slide groove is provided on the top of the workbench, a moving component is arranged inside the first slide groove, the top of the moving component is connected to the placement shell, and a first semicircular extrusion plate is arranged on the outside of the placement shell;

[0013] A fixing plate is arranged on the top of the workbench, and a second semicircular extrusion plate matching the first semicircular extrusion plate is arranged on one side of the fixing plate close to the placement shell.

[0014] Furthermore, a motor is disposed inside the workbench, and a rotating end of the motor is connected to the first gear.

[0015] Furthermore, the moving component includes a fixed shaft fixedly arranged inside the first slide groove, a slider and a third spring are sleeved on the fixed shaft, both sides of the slider are connected to the third spring, and the top of the slider is connected to the placement shell, and a conical bottle is arranged in the placement shell.

[0016] Furthermore, a first threaded rod is provided through the placement shell, a first rotating disk is installed on one end of the first threaded rod, and a fixing block is provided on the other end of the first threaded rod.

[0017] Furthermore, the piston assembly comprises a piston arranged inside the liquid-absorbing cylinder, a connecting rod is installed on the top of the piston, and the top of the connecting rod passes through the liquid-absorbing cylinder and is installed with a stretching disk.

[0018] The technical effects achieved by this utility model are:

[0019] 1. When performing titration, the first conical tube is placed in the solution bottle from which the solution needs to be drawn, and the piston assembly is moved upward to generate suction. This suction causes the first conical block to drive the first movable rod to move the extrusion spring on the first fixed block, thereby moving the first conical hole upward to open the first conical hole, and at the same time, suction is generated to cause the second conical block to move. However, since the second conical tube is narrow at the top and wide at the bottom, this suction causes the second conical block to tightly seal the second conical hole, so that the solution to be injected enters the interior of the pipette through the first conical hole. After the drawing is completed, the suction disappears, and the first conical block is restored to its original position by the elastic force of the first spring, thereby The first conical hole is sealed. At this time, the liquid to be injected is inside the pipette. Then, when titrating, the piston assembly is pressed to generate thrust. This thrust drives the second conical block to move the second movable rod on the second fixed block, thereby opening the second conical hole. The liquid is titrated through the second conical hole. The thrust generated causes the first conical block to move. Since the first conical tube is wide at the top and narrow at the bottom, this thrust causes the first conical block to tightly seal the first conical hole, thereby the liquid is titrated through the second conical hole. The device does not need to switch modes and directly performs titration. At the same time, the device does not need to add any electrical components, which not only saves costs but also facilitates maintenance.

[0020] 2. By setting up a rotating mixing component, the solution in the conical flask can be driven to move forward and backward. Because the force acts on the front and back positions of the conical flask, the solution will not splash, and a second mixing will be performed at the same time, thereby effectively increasing the reaction speed without splashing, thereby improving the accuracy of drug inspection and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a cross-sectional view of the liquid-absorbing cylinder of the utility model;

[0023] Figure 3 This utility model Figure 2 The structural diagram of A in the figure;

[0024] Figure 4 This utility model Figure 2 Schematic diagram of the structure of B;

[0025] Figure 5 It is a structural schematic diagram of the workbench of the utility model;

[0026] Figure 6 This utility model Figure 5 Schematic diagram of the structure of C.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Workbench; 2. Electric telescopic rod; 2. Pipettor; 4. First conical hole; 5. Second conical hole; 6. First conical tube; 7. First conical block; 8. First movable rod; 9. First spring; 10. Second conical tube; 11. Second conical block; 12. Second movable rod; 13. Second spring; 14. First gear; 15. Placement shell; 16. Second gear; 17. First slide groove; 18. First semicircular extrusion plate; 19. Second semicircular extrusion plate; 20. Fixed shaft; 21. Sliding block; 22. Third spring; 24. Piston. DETAILED DESCRIPTION

[0029] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0030] like Figure 1-6 As shown, a rapid titration device comprises a workbench 1, characterized in that: an electric telescopic rod 2 is arranged on the top of the workbench 1, a titration assembly is installed on the outer side of the electric telescopic rod 2, and a rotating mixing device is arranged at the center of the workbench 1;

[0031] like Figure 2 As shown, the titration assembly includes a pipette 3, a piston 24 assembly is arranged inside the pipette 3, a first conical hole 4 is opened at the bottom of the pipette 3, a second conical hole 5 is opened outside the pipette 3, a first conical tube 6 is arranged on the first conical hole 4, the first conical tube 6 is wide at the top and narrow at the bottom, a first conical block 7 and a first fixed block are arranged inside the first conical tube 6, the first conical block 7 is located inside the first conical hole 4, and a first movable rod 8 is arranged at the bottom of the first conical block 7, the first movable rod 8 passes through the first fixed block at the bottom and is installed with a first limiting disk, and the first movable rod 8 is sleeved with a first A spring 9, the first spring 9 is located between the first fixed block and the first limiting disk, a second conical tube 10 is arranged on the second conical hole 5, the second conical tube 10 is narrow at the top and wide at the bottom, a second conical block 11 and a second fixed block are arranged inside the second conical tube 10, the second conical block 11 is located inside the second conical hole 5, and a second movable rod 12 is arranged at the bottom of the second conical block 11, the bottom of the second movable rod 12 passes through the second fixed block and is installed with a second limiting disk, and a second spring 13 is sleeved on the second movable rod 12, and the second spring 13 is located between the second fixed block and the second limiting disk.

[0032] Furthermore, connecting tubes may be installed on the first conical tube 6 and the second conical tube 10, and the pipelines may be extended through the connecting tubes to facilitate washing and titration.

[0033] Furthermore, the liquid pipette 3 may be provided with a scale, through which the amount of liquid entering can be observed, thereby adjusting the controlled amount.

[0034] Furthermore, the cross-sectional area of ​​the first fixing block is smaller than the cross-sectional area of ​​the first tapered hole 4 , and the cross-sectional area of ​​the second fixing block is smaller than the cross-sectional area of ​​the second tapered hole 5 , so that the liquid can flow.

[0035] It should be noted that the components used in the present invention are all made of corrosion-resistant materials.

[0036] like Figure 1 , Figure 5 and Figure 6 As shown, the rotary mixing device includes a first gear 14 rotatably arranged in the middle of the workbench 1, and a placement shell 15 is rotatably arranged on the top of the workbench 1. A second gear 16 is arranged outside the placement shell 15, and the second gear 16 is meshed with the first gear 14;

[0037] A first slide groove 17 is provided on the top of the workbench 1, and a moving component is arranged inside the first slide groove 17. The top of the moving component is connected to the placement shell 15, and a first semicircular extrusion plate 18 is arranged on the outer side of the placement shell 15. A fixed plate is provided on the top of the workbench 1, and a second semicircular extrusion plate 19 matching the first semicircular extrusion plate 18 is provided on the side of the fixed plate close to the placement shell 15. A motor is arranged inside the workbench 1, and the rotating end of the motor is connected to the first gear 14. The moving component includes a fixed shaft 20 fixedly arranged inside the first slide groove 17, and a slider 21 and a third spring 22 are sleeved on the fixed shaft 20. Both sides of the slider 21 are connected to the third spring 22, and the top of the slider 21 is connected to the placement shell 15, and a conical bottle is arranged in the placement shell 15.

[0038] The burette is installed in the installation groove, and then the second rotating disk drives the second threaded rod to fix the burette with the clamping pad, so that the burette is installed on the electric telescopic rod 2, and the first rotating disk drives the first threaded rod to rotate and move on the placement shell 15, so as to push the fixing block to fix the conical flask, and then the electric telescopic rod 2 drives the burette to adjust the distance with the conical flask, and then the solution in the burette enters the conical flask to react, and the motor drives the first rotating shaft to rotate the first gear 14, which is a reciprocating motor, so that it can rotate forward and reverse, and the first gear 14 drives the two second gears 14 to rotate. The second gear 16 reciprocates to mix, and at the same time, when the placement shell 15 rotates, it drives the first semicircular extrusion plate 18 to contact the second semicircular extrusion plate 19, and the force generated by the extrusion drives the placement shell 15 to move the slider 21 on the fixed axis 20 inside the first slide groove 17, thereby squeezing the third spring 22. The elastic force of the third spring 22 causes the placement shell 15 to drive the solution in the conical flask to move back and forth. Because the force acts on the front and back positions of the conical flask, the solution will not splash, and a second mixing is performed at the same time, thereby effectively improving the reaction speed, and will not splash, thereby improving the accuracy of drug inspection and analysis.

[0039] A first threaded rod is provided through the housing 15 , a first rotating disk is installed at one end of the first threaded rod, and a fixing block is provided at the other end of the first threaded rod. The first threaded rod drives the fixing block to fix the solution bottle.

[0040] The piston 24 assembly includes a piston 24 arranged inside the pipette cylinder 3, a connecting rod is installed on the top of the piston 24, the top of the connecting rod passes through the pipette cylinder 3 and is installed with a stretching disk, and the piston 24 is driven to move up and down inside the pipette cylinder 3 by the stretching disk, thereby performing titration.

[0041] Optionally, the stretching disk can be replaced with an electric telescopic rod 2 to achieve automated titration operation. If the electric telescopic rod 2 is replaced, a controller needs to be provided, through which the speed of pushing and lifting the electric telescopic rod 2 can be achieved, thereby adjusting the titration speed.

[0042] The working principle of the utility model is as follows: when performing titration, the first conical tube 6 is placed in the solution bottle from which the solution needs to be drawn, and the piston 24 assembly is moved upward, and suction is generated during the upward movement, and this suction causes the first conical block 7 to drive the first movable rod 8 to move the extrusion spring on the first fixed block, thereby moving the first conical hole 4 upward to open the first conical hole 4, and at the same time, suction is generated to cause the second conical block 11 to move as well, but since the second conical tube 10 is narrow at the top and wide at the bottom, this suction causes the second conical block 11 to tightly seal the second conical hole 5, so that the solution to be injected enters the interior of the liquid pipette 3 through the first conical hole 4, and the suction disappears after the drawing is completed, and the first conical block 7 is restored by the elastic force of the first spring 9 In situ, the first conical hole 4 is sealed. At this time, the liquid to be injected is inside the pipette 3. Then, when titrating, the piston 24 assembly is pressed to generate a thrust. This thrust drives the second conical block 11 to move the second movable rod 12 on the second fixed block, so that the second conical hole 5 is opened, so that the liquid is titrated through the second conical hole 5. The thrust generated causes the first conical block 7 to move. Since the first conical tube 6 is wide at the top and narrow at the bottom, this thrust causes the first conical block 7 to tightly seal the first conical hole 4, so that the liquid is titrated through the second conical hole 5. The device does not need to switch modes and can directly perform titration. At the same time, the device does not need to add any electrical components, which not only saves costs but also is convenient for maintenance.

[0043] The first gear 14 is rotated by driving the first rotating shaft through the motor. The motor is a reciprocating motor, so it can rotate forward and reverse. The first gear 14 causes the two second gears 16 to reciprocate to mix. At the same time, when the placement shell 15 rotates, it drives the first semicircular extrusion plate 18 to contact the second semicircular extrusion plate 19. The force generated by the extrusion drives the placement shell 15 to move the slider 21 on the fixed axis 20 inside the first slide groove 17 to squeeze the third spring 22. The elastic force of the third spring 22 drives the placement shell 15 to move the solution in the conical flask back and forth. Because the force acts on the front and back positions of the conical flask, the solution will not splash. At the same time, the second mixing is performed, thereby effectively improving the reaction speed and preventing splashing, thereby improving the accuracy of drug inspection and analysis.

[0044] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A rapid titration device, comprising a workbench (1), characterized in that: An electric telescopic rod (2) is arranged on the top of the workbench (1), a titration assembly is installed on the outside of the electric telescopic rod (2), and a rotating mixing device is arranged at the center of the workbench (1); The titration assembly comprises a pipette (3), a piston assembly is arranged inside the pipette (3), a first conical hole (4) is opened at the bottom of the pipette (3), a second conical hole (5) is opened on the outside of the pipette (3), a first conical tube (6) is arranged on the first conical hole (4), the first conical tube (6) is wide at the top and narrow at the bottom, a first conical block (7) and a first fixed block are arranged inside the first conical tube (6), the first conical block (7) is located inside the first conical hole (4), and a first movable rod (8) is arranged at the bottom of the first conical block (7), the first movable rod (8) passes through the first fixed block at the bottom and is installed with a first limiting disk, and a first spring (9) is sleeved on the first movable rod (8), and the first spring (9) is located between the first fixed block and the first limiting disk; A second conical tube (10) is arranged on the second conical hole (5), the second conical tube (10) is narrow at the top and wide at the bottom, a second conical block (11) and a second fixed block are arranged inside the second conical tube (10), the second conical block (11) is located inside the second conical hole (5), and a second movable rod (12) is arranged at the bottom of the second conical block (11), the bottom of the second movable rod (12) passes through the second fixed block and is installed with a second limiting plate, and a second spring (13) is sleeved on the second movable rod (12), and the second spring (13) is located between the second fixed block and the second limiting plate.

2. A rapid titration device according to claim 1, characterized in that: The rotary mixing device comprises a first gear (14) rotatably arranged in the middle of the workbench (1); a placement shell (15) is also rotatably arranged on the top of the workbench (1); a second gear (16) is arranged outside the placement shell (15); the second gear (16) is meshed with the first gear (14); The top of the workbench (1) is provided with a first slide groove (17), a moving component is arranged inside the first slide groove (17), the top of the moving component is connected to the placement shell (15), and a first semicircular extrusion plate (18) is arranged outside the placement shell (15); A fixing plate is arranged on the top of the workbench (1), and a second semicircular extrusion plate (19) matching the first semicircular extrusion plate (18) is arranged on one side of the fixing plate close to the placement shell (15).

3. A rapid titration device according to claim 2, characterized in that: A motor is arranged inside the workbench (1), and a rotating end of the motor is connected to the first gear (14).

4. A rapid titration device according to claim 2, characterized in that: The moving assembly comprises a fixed shaft (20) fixedly arranged inside the first slide groove (17), a slider (21) and a third spring 22 (22) are sleeved on the fixed shaft (20), both sides of the slider (21) are connected to the third spring 22 (22), and the top of the slider (21) is connected to the placement shell (15), and a conical bottle is arranged in the placement shell (15).

5. A rapid titration device according to claim 2, characterized in that: A first threaded rod is provided through the placement shell (15), a first rotating disk is installed at one end of the first threaded rod, and a fixing block is provided at the other end of the first threaded rod.

6. A rapid titration device according to claim 1, characterized in that: The piston assembly comprises a piston (24) arranged inside the liquid pipetting cylinder (3), a connecting rod is installed on the top of the piston (24), and the top of the connecting rod passes through the liquid pipetting cylinder (3) and is installed with a stretching disk.

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