An adjustable potentiometric titrator

Abstract

The utility model discloses an adjustable potential titrator relates to potential titrator auxiliary device technical field, including base, the upper end one side of base is fixed with stand, is provided with lifting mechanism on the stand, is provided with the tray on lifting mechanism, and the middle part of tray is equipped with the strip hole, and the titration tube is installed with titration tube through the titration tube fixing support at the strip hole, and the top of tray and located one side of strip hole is provided with electrode fixed frame, and the bottom outer wall of titration tube is fixed with the connecting sleeve, in the utility model, through servo motor drive screw rod drive lifting piece and tray slide up and down, can adjust titration tube and electrode height to adapt to different height reaction container flexibly, and the sliding of I -shaped slide along strip hole can adjust titration tube and electrode spacing, and the movable seat cooperation second locking bolt can steady clamping electrode, satisfy various titration demand, and the titration tube bottom conical splash plate can block solution splash, avoid waste and experiment interference, and its and connecting sleeve screw joint are convenient for dismounting and cleaning.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for potentiometric titrators, and in particular to an adjustable potentiometric titrator. Background Technology

[0002] A potentiometric titrator is an instrument that uses potentiometric titration to determine the titration endpoint by measuring the change in potential during the titration process. It is widely used in chemical analysis of various components in universities, research institutions, petrochemical, pharmaceutical, drug testing, metallurgical, and other industries. Currently, traditional potentiometric titrators have some shortcomings in use. For example, when titrating reaction vessels of different heights, adjusting the height of the electrodes and burette is inconvenient.

[0003] The prior art can be found in Chinese Patent Application No. 201920181517.3, which discloses a potentiometric titrator, which includes a titration electrode assembly, a burette, a main unit, and a titration stage. The main unit includes a detection system and a display device. The titration electrode assembly and the display device are electrically connected to the detection system. The titration stage is located on the main unit and is integrally formed with the main unit. A titration support is provided on the titration stage. However, during the titration process, the solution is prone to splashing out, which not only wastes the solution but may also affect the experimental environment and the accuracy of the experimental results. Therefore, an adjustable potentiometric titrator is provided. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an adjustable potentiometric titrator. A servo motor drives a threaded rod to move a lifting block and tray up and down, allowing for flexible adjustment of the burette and electrode heights to accommodate reaction containers of different heights. An I-shaped slider slides along a slotted hole to adjust the distance between the burette and electrode. A movable seat, in conjunction with a second locking bolt, securely clamps the electrode, meeting diverse titration needs. A conical anti-splash plate at the bottom of the burette prevents solution from splashing out, avoiding waste and experimental interference. Furthermore, its screw connection to the connecting sleeve facilitates disassembly and cleaning, overcoming the deficiencies of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable potentiometric titrator includes a base, a column fixed to one side of the upper end of the base, a lifting mechanism on the column, a tray on the lifting mechanism, a slotted hole in the middle of the tray, a burette mounted through the slotted hole by a burette holder, an electrode holder at the top of the tray and on one side of the slotted hole, a connecting sleeve fixed to the bottom outer wall of the burette, a conical splash guard screwed onto the outside of the connecting sleeve, and a control switch on the side of the base.

[0007] As a further embodiment of this utility model: the electrode holder includes an I-shaped slider that is slidably engaged with the strip hole, the burette is slidably inserted into the middle of the I-shaped slider, and a first locking bolt is screwed to one side of the top of the I-shaped slider, with one end of the first locking bolt abutting against the outer wall of the burette.

[0008] As a further embodiment of this utility model: the electrode fixing frame includes a fixing seat fixed on the upper end of the tray and located on one side of the strip hole. A second locking bolt is rotatably connected to one side of the fixing seat via a bearing. A movable seat is screwed onto the second locking bolt. The lower end face of the movable seat slides in contact with the upper end face of the tray.

[0009] As a further improvement of this utility model, an arc-shaped clamping protrusion is provided on the side of the movable seat facing the fixed seat.

[0010] As a further embodiment of this utility model: the lifting mechanism includes a strip-shaped groove in the middle of the column, a threaded rod is rotatably mounted on the bottom end of the strip-shaped groove through a bearing, a servo motor is mounted on the top end of the column, the output end of the servo motor extends into the strip-shaped groove and connects to the upper end of the threaded rod, and a lifting block is screwed onto the threaded rod.

[0011] As a further improvement of this utility model: the two side walls of the lifting block are slidably engaged with the strip groove, and one end of the tray is connected to one end of the lifting block.

[0012] As a further improvement of this invention, the servo motor is electrically connected to the control switch.

[0013] As a further improvement of this utility model, a container placement groove is provided on the upper surface of the base and below the tray.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The servo motor drives the threaded rod to move the lifting block and tray up and down, which can flexibly adjust the height of the burette and electrode to adapt to reaction vessels of different heights; the I-shaped slider slides along the strip hole to adjust the distance between the burette and the electrode, and the movable seat, together with the second locking bolt, can firmly clamp the electrode to meet various titration needs.

[0016] 2. The conical anti-splash plate at the bottom of the burette can prevent solution from splashing out, avoiding waste and experimental interference, and its screw connection with the connecting sleeve makes it easy to disassemble and clean; the container placement slot on the base can accurately position the reaction container, improving the convenience of operation and the accuracy of the experiment. Attached Figure Description

[0017] Figure 1 This is a first-view three-dimensional structural diagram of an adjustable potentiometric titrator proposed in this utility model.

[0018] Figure 2 This is a second-view three-dimensional structural diagram of an adjustable potentiometric titrator proposed in this utility model.

[0019] Figure 3 This is a third-view three-dimensional structural diagram of an adjustable potentiometric titrator proposed in this utility model.

[0020] Figure 4 This invention proposes an adjustable potentiometric titrator. Figure 1 Enlarged structural diagram at point A in the middle.

[0021] Figure 5 This invention proposes an adjustable potentiometric titrator. Figure 2 Enlarged structural diagram at point B.

[0022] In the diagram: 1. Base; 2. Tray; 3. First locking bolt; 4. Strip hole; 5. Burette; 6. Fixed seat; 7. Lifting block; 8. Strip groove; 9. Servo motor; 10. Column; 11. Container placement slot; 12. I-shaped slider; 13. Conical splash guard; 14. Control switch; 15. Connecting sleeve; 16. Movable seat; 17. Arc-shaped clamping protrusion; 18. Second locking bolt; 19. Threaded rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1, referring to Figure 1-5 An adjustable potentiometric titrator includes a base 1, a column 10 fixed to one side of the upper end of the base 1, a lifting mechanism on the column 10, a tray 2 on the lifting mechanism, a strip hole 4 in the middle of the tray 2, a burette 5 installed at the strip hole 4 by a burette holder, an electrode holder at the top of the tray 2 and on one side of the strip hole 4, a connecting sleeve 15 fixed to the bottom outer wall of the burette 5, a conical splash guard 13 screwed to the outside of the connecting sleeve 15, and a control switch 14 on the side of the base 1.

[0025] The electrode holder includes an I-shaped slider 12 that is slidably engaged with the strip hole 4. The burette 5 is slidably inserted into the middle of the I-shaped slider 12. A first locking bolt 3 is screwed onto one side of the top of the I-shaped slider 12. One end of the first locking bolt 3 abuts against the outer wall of the burette 5.

[0026] The electrode holder includes a fixing seat 6 fixed on the upper end of the tray 2 and located on one side of the strip hole 4. A second locking bolt 18 is rotatably connected to one side of the fixing seat 6 via a bearing. A movable seat 16 is screwed onto the second locking bolt 18. The lower end face of the movable seat 16 is in sliding contact with the upper end face of the tray 2.

[0027] An arc-shaped clamping protrusion 17 is provided on the side of the movable seat 16 facing the fixed seat 6.

[0028] The lifting mechanism includes a strip groove 8 in the middle of the column 10. A threaded rod 19 is rotatably mounted on the bottom end of the strip groove 8 via a bearing. A servo motor 9 is mounted on the top end of the column 10. The output end of the servo motor 9 extends into the strip groove 8 and connects to the upper end of the threaded rod 19. A lifting block 7 is screwed onto the threaded rod 19. The servo motor 9 is electrically connected to the control switch 14.

[0029] The two side walls of the lifting block 7 are slidably engaged with the strip groove 8, and one end of the tray 2 is connected to one end of the lifting block 7.

[0030] The electrode is placed between the arc-shaped clamping protrusion 17 and the fixed seat 6. By rotating the second locking bolt 18, the movable seat 16 moves towards the fixed seat 6. The electrode is clamped by the arc-shaped clamping protrusion 17 and the fixed seat 6. The I-shaped slider 12 slides along the strip hole 4 to adjust the distance between the burette 5 and the electrode. The servo motor 9 is started by controlling the switch 14, which drives the threaded rod 19 to rotate. Then, the lifting block 7 drives the tray 2 to slide up and down along the strip groove 8 to adjust the height of the tray 2, so that the burette 5 and the electrode can be easily inserted into the reaction vessel.

[0031] During titration, the solution can be prevented from splashing out by the conical splash guard 13, and the screw connection between the conical splash guard 13 and the connecting sleeve 15 makes it easy to disassemble and clean.

[0032] Example 2 is an optimization based on Example 1, specifically:

[0033] A container placement slot 11 is provided on the upper surface of the base 1 and below the tray 2. By placing the reaction container in the container placement slot 11, it is easy to accurately place the reaction container under the burette 5 and the electrode.

[0034] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An adjustable potentiometric titrator, comprising a base (1), characterized in that, A column (10) is fixed on one side of the upper end of the base (1). A lifting mechanism is provided on the column (10). A tray (2) is provided on the lifting mechanism. A strip hole (4) is opened in the middle of the tray (2). A burette (5) is installed at the strip hole (4) through a burette fixing bracket. An electrode fixing bracket is provided at the top of the tray (2) and on one side of the strip hole (4). A connecting sleeve (15) is fixed on the bottom outer wall of the burette (5). A conical anti-splash plate (13) is screwed to the outside of the connecting sleeve (15). A control switch (14) is provided on the side of the base (1).

2. The adjustable potentiometric titrator according to claim 1, characterized in that, The electrode holder includes an I-shaped slider (12) that is slidably engaged with the strip hole (4), and a burette (5) that is slidably inserted into the middle of the I-shaped slider (12). A first locking bolt (3) is screwed onto one side of the top of the I-shaped slider (12), and one end of the first locking bolt (3) abuts against the outer wall of the burette (5).

3. The adjustable potentiometric titrator according to claim 1, characterized in that, The electrode holder includes a fixed seat (6) fixed on the upper end of the tray (2) and located on one side of the strip hole (4). A second locking bolt (18) is rotatably connected to one side of the fixed seat (6) via a bearing. A movable seat (16) is screwed onto the second locking bolt (18). The lower end face of the movable seat (16) slides in contact with the upper end face of the tray (2).

4. An adjustable potentiometric titrator according to claim 3, characterized in that, The movable seat (16) is provided with an arc-shaped clamping protrusion (17) on the side facing the fixed seat (6).

5. An adjustable potentiometric titrator according to claim 1, characterized in that, The lifting mechanism includes a strip groove (8) in the middle of the column (10), a threaded rod (19) is rotatably mounted on the bottom end of the strip groove (8) via a bearing, a servo motor (9) is mounted on the top end of the column (10), the output end of the servo motor (9) extends into the strip groove (8) and connects to the upper end of the threaded rod (19), and a lifting block (7) is screwed onto the threaded rod (19).

6. An adjustable potentiometric titrator according to claim 5, characterized in that, The two side walls of the lifting block (7) are slidably engaged with the strip groove (8), and one end of the tray (2) is connected to one end of the lifting block (7).

7. An adjustable potentiometric titrator according to claim 5, characterized in that, The servo motor (9) is electrically connected to the control switch (14).

8. An adjustable potentiometric titrator according to claim 1, characterized in that, A container placement slot (11) is provided on the upper surface of the base (1) and below the tray (2).

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