Trace moisture measuring device

Abstract

The utility model discloses a trace moisture measuring device, which relates to the technical field of trace moisture measurement and comprises a measuring instrument body for measuring trace moisture. A circular groove for placing the electrolytic tank is formed in the tester body; an annular cavity surrounding the groove is formed in the tester body, and a plurality of clamping rods for clamping an electrolytic tank are uniformly arranged on the circumference of the side wall of the groove in a sliding and penetrating manner; the clamping rods slide in the radial direction of the grooves, one ends of the clamping rods extend into the annular cavity, and a driving structure for driving the clamping rods to slide in a reciprocating mode is arranged in the annular cavity. By means of the clamping rods hidden in the groove and the driving structure in the annular cavity, the clamping rods move towards the center of the groove to achieve surrounding clamping of the bottom of the electrolytic tank, the electrolytic tank is fixed, the space on the upper side of the tester body is not occupied, operation of the tester body is not affected, and the test efficiency is improved. And the regular and beautiful appearance of the tester body is kept.

Description

Technical Field

[0001] This utility model relates to the field of trace moisture determination technology, and in particular to a trace moisture determination device. Background Technology

[0002] A trace moisture analyzer, also known as a Karl Fischer moisture analyzer, utilizes the redox reaction of iodine and sulfur dioxide in an environment with an organic base and methanol to quantitatively react with water. Its basic principle is to calculate the moisture content by titrating the water in the sample and using the amount of iodine consumed. It is widely used in chemical, pharmaceutical, food, agricultural, petroleum, and power industries, and can be used to determine the moisture content of various organic and inorganic compounds.

[0003] The electrolytic cell of the trace moisture analyzer is simply placed in a groove in the main body of the analyzer. Since the electrolytic cell has a liquid injection port on the side and it is necessary to observe the color of the reagent inside the electrolytic cell, and the electrolytic cell is only surrounded by the groove at the bottom, the positioning effect of the electrolytic cell is not good and there is a risk of tipping over.

[0004] In the prior art, patent CN221351303U discloses a convenient and quick fixation method for a trace moisture analyzer; patent CN214681840U discloses an automatic fixation device for a trace moisture analyzer; and patent CN212228802U discloses a trace moisture analyzer. Although these technologies improve the fixation effect of the electrolytic cell, the fixing structure for fixing the electrolytic cell is located on the outside of the analyzer body, occupying a large amount of external space, which is not aesthetically pleasing and affects the moisture measurement operation to some extent. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the prior art and provide a trace moisture measuring device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A trace moisture measuring device includes a measuring instrument body for measuring trace moisture; the measuring instrument body has a circular groove for placing an electrolytic cell; the measuring instrument body has an annular cavity surrounding the groove, and a plurality of clamping rods for clamping the electrolytic cell are uniformly slidably inserted through the sidewall of the groove; the clamping rods slide radially along the groove, and one end of the clamping rod extends into the annular cavity, and a driving structure for driving the clamping rods to slide back and forth is provided in the annular cavity.

[0008] Furthermore, a plurality of radial light holes are provided between the groove and the annular cavity for the clamping rod to slide; a rubber clamping block is connected to the end of the clamping rod facing the electrolytic cell, the outer diameter of the rubber clamping block is larger than that of the clamping rod, and the light holes are stepped holes.

[0009] Furthermore, the driving structure includes an annular worm gear, which is rotatably disposed within the annular cavity, and a worm is engaged on one side of the worm gear; a plurality of guide holes are evenly provided on the circumference of the worm gear, and the clamping rod is in the shape of an inverted L, with its bent portion located within the annular cavity; the outer end of the clamping rod extends into the guide hole, and the distance from one end of the guide hole to the center of rotation of the worm gear gradually decreases from the other end.

[0010] Furthermore, an annular groove is provided on the inner ring side of the annular cavity, and the inner ring edge of the worm gear is located in the annular groove and rotates along the inner side of the annular groove.

[0011] Furthermore, a secondary cavity is connected to one side of the annular cavity, the worm is located in the secondary cavity, and a rotating shaft is fixedly inserted through the center of the worm. The first end of the rotating shaft is rotatably connected to the inner wall of the secondary cavity, and the second end of the rotating shaft is rotatably connected to the measuring instrument body and extends to the outside of the measuring instrument body. A handwheel is connected to the second end of the rotating shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model uses multiple clamping rods hidden in the groove and a driving structure in the annular cavity to move the clamping rods toward the center of the groove to achieve circumferential clamping of the bottom of the electrolytic cell, thereby fixing the electrolytic cell. It does not occupy the upper space of the measuring instrument body, does not affect the operation of the measuring instrument body, and maintains the neat and beautiful shape of the measuring instrument body.

[0014] This invention allows the clamping rods to slide synchronously by rotating a worm gear with an inclined guide hole. The movement of all clamping rods can be achieved by rotating the worm gear, making the adjustment process simple, convenient and fast. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the electrolysis cell structure of this utility model.

[0017] Figure 3 This is a partial horizontal cross-sectional enlarged schematic diagram of the present invention.

[0018] Figure 4 This is a schematic diagram of the internal transmission structure of this utility model.

[0019] Figure 5 This is a partial enlarged vertical cross-sectional view of the present invention.

[0020] In the figure: 1. Measuring instrument body; 2. Electrolytic cell; 3. Groove; 4. Annular cavity; 5. Clamping rod; 6. Rubber clamp; 7. Worm gear; 8. Guide hole; 9. Worm; 10. Handwheel; 11. Optical hole; 12. Annular groove; 13. Secondary cavity; 14. Rotating shaft; 15. Magnetic actuator. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the main body, or it can be separately arranged from the main body and connected to it. This connection can be detachable or non-detachable. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The present invention will be further described in detail below with reference to the embodiments.

[0025] Specific embodiments of the trace moisture measuring device provided by this utility model:

[0026] Please see Figure 1-5 The trace moisture determination device includes a measuring instrument body 1 for measuring trace moisture; the measuring instrument body 1 is provided with a circular groove 3 for placing an electrolytic cell 2; a magnetic actuator 15 is provided at the bottom of the groove 3, and a stir bar is placed inside the electrolytic cell 2. The magnetic actuator 15 can generate a magnetic field to make the stir bar move inside the electrolytic cell 2, thereby stirring the reagent inside the electrolytic cell 2. However, stirring makes the electrolytic cell 2 unstable.

[0027] Electrolyte 2 is equipped with electrodes, which are connected to the instrument body 1 via cables; a drying tube is connected to the upper side of electrolyte 2; an inclined liquid injection port is connected to the side of electrolyte 2, and a rubber stopper is installed at the liquid injection port.

[0028] To ensure the stability of the electrolytic cell 2, the instrument body 1 is provided with an annular cavity 4 surrounding the groove 3. The annular cavity 4 is circular and concentrically surrounds the groove 3. Several clamping rods 5 for clamping the electrolytic cell 2 are uniformly slidably inserted through the sidewall of the groove 3. The clamping rods 5 slide radially along the groove 3, and several radial light holes 11 are provided between the groove 3 and the annular cavity 4 for the clamping rods 5 to slide.

[0029] A rubber clamping block 6 is connected to the end of the clamping rod 5 facing the electrolytic cell 2. The outer diameter of the rubber clamping block 6 is larger than that of the clamping rod 5. The aperture 11 is a stepped aperture, with the larger end of the stepped aperture allowing the rubber clamping block 6 to be hidden in the side wall of the groove 3. The rubber clamping block 6 is in direct contact with the electrolytic cell 2, which can protect the outer wall of the electrolytic cell 2 from damage and increase the contact area with the electrolytic cell 2, thereby improving the stability of the electrolytic cell 2. During fixation, the clamping rod 5 squeezes the rubber clamping block 6 to make it adhere tightly to the electrolytic cell 2. The rubber clamping block 6 has a high coefficient of friction with the glass electrolytic cell 2.

[0030] One end of the clamping rod 5 extends into the annular cavity 4, and the annular cavity 4 is provided with a driving structure for reciprocating sliding of the clamping rod 5. The driving structure includes an annular worm gear 7, which is rotatably disposed within the annular cavity 4. Specifically, an annular groove 12 is provided on the inner annular side of the annular cavity 4, and the inner annular edge of the worm gear 7 is located within the annular groove 12 and rotates along the inner side of the annular groove 12. Several guide holes 8 are evenly provided on the circumference of the worm gear 7. The clamping rod 5 is inverted L-shaped, and its bent part is located within the annular cavity 4. The outer end of the clamping rod 5 extends into the guide hole 8, and the distance from one end of the guide hole 8 to the center of rotation of the worm gear 7 gradually decreases from the other end.

[0031] When the worm gear 7 rotates, the guide hole 8 rotates accordingly. The clamping rod 5 can only slide radially along the light hole 11. Due to the different radii of rotation at various points of the guide hole 8, the positional change of the clamping rod 5 relative to the guide hole 8 causes the clamping rod 5 to slide radially along the light hole 11. In this way, the guide hole 8 causes all the clamping rods 5 to move synchronously towards the center or synchronously away from the center, thereby realizing the synchronous clamping, fixing, and release of the clamping rods 5 on the outer ring side of the bottom of the electrolytic cell 2.

[0032] A worm 9 is meshed on one side of the worm gear 7; a secondary cavity 13 is connected to one side of the annular cavity 4, the worm 9 is located in the secondary cavity 13, and a rotating shaft 14 is fixedly inserted through the center of the worm 9. The first end of the rotating shaft 14 is rotatably connected to the inner wall of the secondary cavity 13, and the second end of the rotating shaft 14 passes through the side wall of the measuring instrument body 1 and is rotatably connected to the measuring instrument body 1 and extends to the outside of the measuring instrument body 1. A disc-shaped handwheel 10 is connected to the second end of the rotating shaft 14.

[0033] The handwheel 10 rotates against the outside of the measuring instrument body 1, ensuring the compact structure and regular shape of the measuring instrument body 1. Rotating the handwheel 10 causes the worm 9 to rotate via the rotating shaft 14. The rotation of the worm 9 causes the worm wheel 7 to rotate, which in turn causes all the clamping rods 5 to slide, thereby achieving the clamping, fixing, and releasing of the electrolytic cell 2. The transmission from the worm 9 to the worm wheel 7 has a reverse self-locking property, thus enabling the positioning of the clamping rods 5, making operation convenient. Together with the rubber clamping block 6, it clamps the electrolytic cell 2, providing a good clamping and fixing effect on the electrolytic cell 2.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A trace moisture measuring device, comprising a measuring device body (1) for trace moisture measurement; a circular groove (3) for placing an electrolytic cell (2) is arranged on the measuring device body (1); characterized in that: The measuring instrument body (1) is internally provided with a ring cavity (4) surrounding the groove (3), the groove (3) side wall circumference uniformly slides through a plurality of clamping poles (5) clamping electrolytic cells (2); the clamping pole (5) slides along the groove (3) radially, the clamping pole (5) one end extends into the ring cavity (4), the ring cavity (4) is internally provided with the drive structure of driving the clamping pole (5) reciprocating sliding.

2. The moisture measurement device of claim 1, wherein: The groove (3) and the ring cavity (4) are provided with a plurality of radial light holes (11) for the sliding of the clamping pole (5); the clamping pole (5) one end connected with rubber clamp block (6) towards electrolytic cell (2), the outer diameter of rubber clamp block (6) is greater than the clamping pole (5), the light hole (11) is a stepped hole.

3. The moisture measurement device of claim 1, wherein: The drive structure includes a circular ring worm wheel (7), the worm wheel (7) is rotatably arranged in the ring cavity (4), the worm wheel (7) one side engages with the worm (9); the worm wheel (7) is uniformly provided with a plurality of guide holes (8) on the circumference, the shape of the clamping pole (5) is inverted L-shaped, and the bending part thereof is located in the ring cavity (4); the clamping pole (5) outer end extends into the guide hole (8), one end of the guide hole (8) gradually decreases the distance from the worm wheel (7) to the center of rotation to the other end.

4. The moisture measurement device of claim 3, wherein: The ring cavity (4) is internally provided with a ring groove (12) on the ring side, and the inner ring edge of the worm wheel (7) is located in the ring groove (12) and rotates along the inside of the ring groove (12).

5. The moisture measurement device of claim 3, wherein: The ring cavity (4) one side is connected with the auxiliary cavity (13), the worm (9) is located in the auxiliary cavity (13), the worm (9) center is fixedly provided with a rotating shaft (14), the rotating shaft (14) first end is rotatably connected with the inner wall of the auxiliary cavity (13), the rotating shaft (14) second end is rotatably connected with the measuring instrument body (1) and extends to the outside of the measuring instrument body (1), and the rotating shaft (14) second end is connected with a hand wheel (10).

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