Karl Fischer coulometry trace moisture meter

Abstract

The utility model discloses a Karl Fischer coulometry trace moisture meter which comprises a meter main machine, a titration cell bottle is arranged on the right side of the top face of the meter main machine, a weighing table is arranged on the right side of the meter main machine, and a first fixing plate is fixedly connected to the middle of the top face of the weighing table. A second fixing plate is fixedly connected to the top of the right side of the front face of the first fixing plate, and a first electric telescopic rod is fixedly connected to the middle of the left side of the second fixing plate. A motor, a rotating frame, a second electric telescopic rod, a clamp and a first electric telescopic rod are arranged, the motor is arranged in a driving box, the rotating frame is arranged at the output end of the motor, the second electric telescopic rod is fixedly connected to the rotating frame, the clamp is arranged at the bottom of the second electric telescopic rod, and the first electric telescopic rod is arranged on the right side of the driving box; according to the function, detection liquid can be extracted and injected through mechanical driving, manual injection is not needed, and the situation that the bodies of detection personnel are injured by poisonous and harmful detection liquid can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of moisture analyzers, in particular to a Karl Fischer coulometric trace moisture analyzer. Background Art

[0002] Karl Fischer titration is an electrochemical analytical method used to determine the water content of a sample. It is based on the redox reaction of iodine and sulfur dioxide with water in the presence of pyridine and methanol. In this reaction, each mole of water reacts with one mole of iodine and one mole of sulfur dioxide to produce pyridinium hydroiodide and pyridinium methylsulfate. By measuring the amount of electricity consumed during the electrolysis, the water content of the sample can be calculated according to Faraday's law of electrolysis. Karl Fischer titration can be categorized into two types: volumetric and coulometric. Coulometric titration is widely used for the determination of trace amounts of water due to its high precision and rapid titration speed.

[0003] The Karl Fischer coulometric moisture analyzer is a precision moisture analyzer based on the principle of Karl Fischer titration, measuring trace moisture in a sample through an electrolytic process. This method is applicable to a variety of sample types, including liquids, solids, and gases, and is widely used in the power, petroleum, chemical, pharmaceutical, and food industries. However, the Karl Fischer coulometric moisture analyzer requires manual extraction and injection of liquid samples via syringe. These test liquids are often chemical reagents, which can be harmful to the human body. During testing, the syringe needle can easily puncture the skin of testers, causing physical harm. Utility Model Content

[0004] The purpose of the utility model is to provide a Karl Fischer coulometric trace moisture meter, which is equipped with a motor inside a drive box, a rotating frame at the output end of the motor, a second electric telescopic rod fixedly connected to the rotating frame, a clamp at the bottom of the second electric telescopic rod, and a first electric telescopic rod on the right side of the drive box. This function can extract and inject test liquid through mechanical drive, without the need for manual extraction and injection, and can prevent toxic and harmful test liquids from causing damage to the body of the tester.

[0005] To achieve the above-mentioned object, a Karl Fischer coulometric trace moisture meter is provided, comprising a meter main unit, a titration cell bottle being provided on the right side of the top surface of the meter main unit, a control panel being provided in the middle of the front surface of the meter main unit, a weighing platform being provided on the right side of the meter main unit, a first fixing plate being fixedly connected to the middle of the top surface of the weighing platform, a second fixing plate being fixedly connected to the top right side of the front surface of the first fixing plate, and a first electric telescopic rod being fixedly connected to the middle of the left side of the second fixing plate;

[0006] The left end of the first electric telescopic rod is fixedly connected to a drive box, a motor is provided inside the drive box, an output end of the motor is fixedly connected to a rotating frame, a second electric telescopic rod is fixedly connected to the inner side of the top of the rotating frame, and a clamp is fixedly connected to the bottom end of the second electric telescopic rod.

[0007] According to the Karl Fischer coulometric moisture analyzer, a placement cylinder is fixedly connected to the front of the rotating frame, and a plurality of clamping blocks are provided on the top surface of the placement cylinder. This arrangement is used to engage the curled edge of the outer jacket above the syringe needle with the clamping blocks, thereby stabilizing the syringe and preventing it from moving.

[0008] In the Karl Fischer coulometric moisture analyzer, measuring electrodes are provided on the main unit and the top of the titration cell, and the electrodes are linearly connected. This arrangement allows the measuring electrodes to detect changes in current during the electrolysis process, thereby determining the water content in the sample.

[0009] In the Karl Fischer coulometric moisture analyzer, the titration cell is equipped with several drying tubes on top, and a cell opening is provided on the top right side of the titration cell, extending through the titration cell. This arrangement allows the drying tubes to pass through, presumably to protect the interior of the instrument from humid air.

[0010] According to the Karl Fischer coulometric trace moisture meter, a placement platform is provided on the right side of the weighing platform, and a third electric telescopic rod is fixedly connected to the bottom of the placement platform.

[0011] According to the Karl Fischer coulometric trace moisture analyzer, a limiting block is fixedly connected to the left side of the front of the driving box, and the limiting block and the rotating frame are correspondingly arranged.

[0012] In the Karl Fischer coulometric moisture analyzer, the clamp has threaded knobs threadedly connected to the center of each of its left and right sides. The knobs extend through the clamp, and a clamping block is fixedly connected to the end of each knob near the clamp. This arrangement is used to clamp the syringe core rod, and the clamp and the second electric telescopic rod cooperate to allow the syringe to draw and inject the test liquid.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By setting a motor, a rotating frame, a second electric telescopic rod, a clamp, and a first electric telescopic rod, the motor is set inside the drive box, a rotating frame is set at the output end of the motor, the second electric telescopic rod is fixedly connected to the rotating frame, a clamp is set at the bottom of the second electric telescopic rod, and the first electric telescopic rod is set on the right side of the drive box. This function can extract and inject the test liquid through mechanical drive without manual injection, which can avoid toxic and harmful test liquids from causing damage to the body of the tester.

[0015] 2. By setting the limit block, placement table, third electric telescopic rod, placement cylinder, and clamping block, the limit block is set on the front of the drive box, the placement table is set on the right side of the weighing table, the third electric telescopic rod is set at the bottom of the placement table, the placement cylinder is set on the front of the rotating frame, and the clamping block is set on the top of the placement cylinder. This function can assist the extraction and injection work to make it stable and accurate.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a three-dimensional structural diagram of the Karl Fischer coulometric trace moisture analyzer of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the rotating frame of the Karl Fischer coulometric trace moisture analyzer of the present invention;

[0020] Figure 3 This is the Karl Fischer coulometric trace moisture analyzer Figure 1 A magnified view of point A;

[0021] Figure 4 This is a side cross-sectional view of the rotating frame portion of the Karl Fischer coulometric trace moisture analyzer of the present invention;

[0022] Figure 5 This is the Karl Fischer coulometric trace moisture analyzer Figure 2 Enlarged view of point B.

[0023] In the figure: 1. Measuring instrument main unit; 2. Control panel; 3. Weighing platform; 4. First fixed plate; 5. Second fixed plate; 6. First electric telescopic rod; 7. Placement platform; 8. Drive box; 9. Rotating frame; 10. Limit block; 11. Placement cylinder; 12. Titration cell bottle; 13. Cell bottle mouth; 14. Drying tube; 15. Measuring electrode; 16. Motor; 17. Second electric telescopic rod; 18. Clamp; 19. Threaded knob; 20. Clamp block; 21. Card block; 22. Third electric telescopic rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the utility model.

[0025] See also Figure 1 - Figure 5 As shown, the utility model provides a technical solution: a Karl Fischer coulometric trace moisture meter, comprising a meter main unit 1, a titration cell bottle 12 is provided on the right side of the top surface of the meter main unit 1, a measuring electrode 15 is provided on the top of the meter main unit 1 and the titration cell bottle 12, the measuring electrodes 15 are linearly connected, a plurality of drying tubes 14 are provided on the top of the titration cell bottle 12, a cell bottle opening 13 is provided on the top right side of the titration cell bottle 12, the cell bottle opening 13 passes through the titration cell bottle 12, and a sealing gasket is provided inside the cell bottle opening 13 to ensure the sealing of the titration cell bottle 12. To improve the sealing performance and prevent the leakage of reagents, a control panel 2 is provided in the middle of the front of the measuring instrument host 1, a weighing platform 3 is provided on the right side of the measuring instrument host 1, a placing platform 7 is provided on the right side of the weighing platform 3, and a third electric telescopic rod 22 is fixedly connected to the bottom of the placing platform 7, a first fixed plate 4 is fixedly connected to the middle of the top surface of the weighing platform 3, a second fixed plate 5 is fixedly connected to the top right side of the front of the first fixed plate 4, a first electric telescopic rod 6 is fixedly connected to the middle of the left side of the second fixed plate 5, and a drive box 8 is fixedly connected to the left end of the first electric telescopic rod 6.

[0026] A limit block 10 is fixedly connected to the left side of the front of the drive box 8. The limit block 10 and the rotating frame 9 are correspondingly arranged. A motor 16 is installed inside the drive box 8. The output end of the motor 16 is fixedly connected to the rotating frame 9. A second electric telescopic rod 17 is fixedly connected to the inner side of the top of the rotating frame 9. The bottom end of the second electric telescopic rod 17 is fixedly connected to a clamp 18. Threaded knobs 19 are threadedly connected to the middle of the left and right sides of the clamp 18, and the threaded knobs 19 pass through the clamp 18. The ends of the threaded knobs 19 near the clamp 18 are fixedly connected to clamp blocks 20. A placement tube 11 is fixedly connected to the front of the rotating frame 9. The top surface of the placement tube 11 is provided with several clamping blocks 21. The dual power supply channels separate the electrolysis electrode and the measuring electrode. The instrument can automatically remove various interferences, greatly improving the precision of the test results. The measuring electrode data is directly A / D sampled and converted. The true value of the measured data eliminates the errors caused in the analog circuit, making the test results more accurate.

[0027] Working principle: When in use, place the bottle containing the test liquid in the groove in the middle of the placement table 7, then put the special syringe into the placement tube 11, and the syringe needle passes through the reserved hole at the bottom of the placement tube 11. Turn the syringe so that the outer jacket curling above the needle tube enters the inside of the clamp 21, and then turn the threaded knob 19 to fix the syringe core rod, and drive the placement table 7 upward by the third electric telescopic rod 22 to insert the syringe needle into the liquid bottle. Then, the second electric telescopic rod 17 drives the clamp 18 to move upward to make the syringe absorb the test liquid. After the absorption is completed, the third electric telescopic rod 22 drives the placement plate to move downward, and then the motor 16 drives The rotating frame 9 rotates so that the rotating frame 9 conflicts with the limit block 10, and the syringe needle points to the direction of the titration cell bottle 12. At this time, it is weighed by the weighing platform 3, and then the rotating frame 9 is driven to move by the first electric telescopic rod 6, so that the syringe needle is inserted into the cell bottle mouth 13, and then the syringe core rod is pressed by the second electric telescopic rod 17 to inject the liquid into the titration cell bottle 12. The syringe is then pulled out by moving the first electric telescopic rod 6, and is weighed twice by the weighing platform 3 at this time. The weight of the liquid injected into the titration cell bottle 12 is calculated based on the two data, and then the water content of the liquid is detected by the measuring electrode 15 in cooperation with the measuring instrument host 1.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A Karl Fischer coulometric trace moisture meter, comprising a meter main unit (1), characterized in that: A titration cell bottle (12) is provided on the right side of the top surface of the measuring instrument main unit (1), a control panel (2) is provided in the middle of the front surface of the measuring instrument main unit (1), a weighing platform (3) is provided on the right side of the measuring instrument main unit (1), a first fixing plate (4) is fixedly connected to the middle of the top surface of the weighing platform (3), a second fixing plate (5) is fixedly connected to the top right side of the front surface of the first fixing plate (4), and a first electric telescopic rod (6) is fixedly connected to the middle of the left side of the second fixing plate (5); The left end of the first electric telescopic rod (6) is fixedly connected to a drive box (8), a motor (16) is provided inside the drive box (8), an output end of the motor (16) is fixedly connected to a rotating frame (9), a second electric telescopic rod (17) is fixedly connected to the inner side of the top of the rotating frame (9), and a clamp (18) is fixedly connected to the bottom end of the second electric telescopic rod (17).

2. The Karl Fischer coulometric moisture analyzer according to claim 1, wherein: A placement cylinder (11) is fixedly connected to the front surface of the rotating frame (9), and a plurality of clamping blocks (21) are provided on the top surface of the placement cylinder (11).

3. The Karl Fischer coulometric moisture analyzer according to claim 1, wherein: The measuring instrument main unit (1) and the top of the titration cell bottle (12) are both provided with measuring electrodes (15), and the measuring electrodes (15) are linearly connected.

4. The Karl Fischer coulometric moisture analyzer according to claim 1, wherein: The top of the titration cell bottle (12) is provided with a plurality of drying tubes (14), the top right side of the titration cell bottle (12) is provided with a cell bottle opening (13), and the cell bottle opening (13) passes through the titration cell bottle (12).

5. The Karl Fischer coulometric moisture analyzer according to claim 1, wherein: A placement platform (7) is provided on the right side of the weighing platform (3), and a third electric telescopic rod (22) is fixedly connected to the bottom of the placement platform (7).

6. The Karl Fischer coulometric moisture analyzer according to claim 1, wherein: A limiting block (10) is fixedly connected to the left side of the front face of the driving box (8), and the limiting block (10) and the rotating frame (9) are correspondingly arranged.

7. The Karl Fischer coulometric moisture analyzer according to claim 1, wherein: The middle parts of the left and right sides of the clamp (18) are both threadedly connected with threaded knobs (19), and the threaded knobs (19) pass through the clamp (18). The ends of the threaded knobs (19) close to the clamp (18) are fixedly connected with clamping blocks (20).

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