Dehumidification device for Karl Fisher moisture meter

By designing a sealing structure with a separator and a bonding pad, along with a fan drying system, on the Karl Fischer moisture meter, the problem of unbalanced humidity control was solved, resulting in more accurate measurement results.

CN224230515UActive Publication Date: 2026-05-12SHANGHAI NUOCHENG PHARMA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI NUOCHENG PHARMA
Filing Date
2025-05-20
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

The existing Karl Fischer moisture analyzer has a gap in the dehumidification device at the contact point between the cover and the table surface, which leads to an imbalance in humidity control and affects the accuracy of the measurement results.

Method used

The design employs a partition cover, which seals against the outer wall of the workbench through the contact of bonding pad one and bonding pad two. Combined with a fan and drying structure, it adsorbs humidity in the air, ensuring both airtightness and humidity control.

Benefits of technology

This improves the accuracy of measurement results, ensures balanced humidity control, and reduces the impact of external gases on the measurement.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of Karl Fischer moisture meters, in particular to a dehumidification device for a Karl Fischer moisture meter, which comprises a separation cover, an observation surface is arranged at the top of the outer wall of one side of the separation cover, a drying structure is mounted at the center of the outer wall of one side of the separation cover, and illuminating lamps are mounted at two ends of the inner wall of the top of the separation cover. Humidity sensors distributed at equal intervals are mounted on the inner wall of the top of the separation cover; the drying structure comprises a mounting block mounted on the outer wall of the separation cover, connecting grooves formed in the two ends of the outer wall of one side of the mounting block, a sliding groove formed in the middle of the outer wall of one side of the mounting block, and a storage hopper slidably connected to the inner wall of the sliding groove. According to the utility model, the separation cover descends to be in contact with the outer wall of the workbench through the fitting pad I and the fitting pad II, and the separation cover is pressed downwards to seal the joint by the fitting pad I and the fitting pad II, so that the measurement result is prevented from being influenced by entering gas, and the accuracy is conveniently improved.
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Description

Technical Field

[0001] This utility model relates to the field of Karl Fischer moisture meter technology, and in particular to a dehumidification device for a Karl Fischer moisture meter. Background Technology

[0002] The Karl Fischer moisture analyzer is an instrument designed based on the Karl Fischer titration method (or coulometric method), which can accurately determine the trace moisture content in various samples such as solids, liquids, and gases.

[0003] A patent search revealed a dehumidification cover for a Karl Fischer moisture meter (202222024843.8). This patent can absorb moisture from the environment to a certain extent, thereby reducing its impact on test results and minimizing errors. However, when the device is used to cover the Karl Fischer moisture meter, the lack of a flexible connection between the bottom of the cover and the workbench allows new gas to enter the cover through the gap between the cover and the workbench during the cyclic humidity control process, resulting in an imbalance in humidity control. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems and shortcomings by proposing a dehumidification device for a Karl Fischer moisture meter: the separator is lowered and contacts the outer wall of the worktable through the first and second bonding pads, and the separator is pressed down to seal the connection between the first and second bonding pads, preventing the incoming gas from affecting the measurement results and improving accuracy.

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

[0006] A dehumidification device for a Karl Fischer moisture meter includes a partition cover. An observation surface is provided at the top of one side of the partition cover's outer wall, and a drying structure is installed at the center of the same side. Illumination lamps are installed at both ends of the top inner wall of the partition cover, and humidity sensors are evenly distributed on the top inner wall. The drying structure includes a mounting block installed on the outer wall of the partition cover, connecting grooves formed at both ends of one side of the outer wall of the mounting block, a sliding groove formed in the middle of one side of the outer wall of the mounting block, a storage hopper slidably connected to the inner wall of the sliding groove, and a fan installed on the inner wall of the connecting groove at the bottom of the mounting block.

[0007] Preferably, the outer wall of the partition cover is provided with an air inlet and an air outlet at the connecting groove of the mounting block, and the connecting groove of the mounting block is provided with an air vent at the air outlet and the air inlet.

[0008] Preferably, the output end of the fan is connected to the air port at the exhaust hole, and molecular sieve particles and silica gel particles are placed on the inner wall of the storage hopper.

[0009] Preferably, a sealing plate is installed on one side of the outer wall of the mounting block at the connection groove and the sliding groove, and the outer wall of the storage hopper is provided with equidistant ventilation holes.

[0010] Preferably, one end of the outer wall of the partition cover is provided with a mounting groove, and a side plate is installed on the partition cover at the mounting groove.

[0011] Preferably, a second fitting pad is installed on the bottom outer wall of the side plate, and a first fitting pad is installed on the bottom outer wall of the partition cover.

[0012] Preferably, the outer wall of one side of the partition cover has operation openings at both ends, and the partition cover is equipped with operation gloves in the operation openings. The outer wall of one side of the partition cover has threading holes, and sealing sleeves are fitted in the threading holes.

[0013] Preferably, the fan and the lighting are connected to the controller via wires, and the controller is connected to the power supply via wires. The humidity sensor is connected to the signal input terminal of the controller via a signal line.

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

[0015] 1. Lower the separator cover so that it contacts the outer wall of the workbench through the first and second bonding pads. Press the separator cover down to seal the connection between the first and second bonding pads, so as to prevent the gas entering from affecting the measurement results and improve accuracy.

[0016] 2. The fan draws gas through the storage hopper, vent, molecular sieve, and silica gel particles. During this process, the particles adsorb the humidity in the air, and the humidity of the air in the compartment is controlled by the circulation, making it easy to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the unfolded structure of a dehumidification device for a Karl Fischer moisture meter proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the bottom structure of a dehumidification device for a Karl Fischer moisture meter proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the unfolded structure of the mounting block of a dehumidification device for a Karl Fischer moisture meter proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of a dehumidification device for a Karl Fischer moisture meter proposed in this utility model.

[0021] In the diagram: 1. Separator cover, 2. Mounting slot, 3. Side plate, 4. Adhesive pad one, 5. Adhesive pad two, 6. Observation surface, 7. Drying structure, 8. Operating port, 9. Operating gloves, 10. Threading hole, 11. Sealing sleeve, 12. Lighting lamp, 13. Humidity sensor, 14. Mounting block, 15. Connecting slot, 16. Sliding slot, 17. Storage hopper, 18. Fan, 19. Vent hole, 20. Sealing plate, 21. Exhaust hole, 22. Air inlet hole. Detailed Implementation

[0022] 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.

[0023] Example 1:

[0024] Reference Figure 1-2 and Figure 4 A dehumidification device for a Karl Fischer moisture meter includes a partition cover 1, an observation surface 6 at the top of one side of the outer wall of the partition cover 1, a drying structure 7 at the center of one side of the outer wall of the partition cover 1, lighting lamps 12 at both ends of the top inner wall of the partition cover 1, and humidity sensors 13 evenly distributed on the top inner wall of the partition cover 1.

[0025] The outer wall of one end of the partition cover 1 is provided with a mounting groove 2, and the partition cover 1 is equipped with a side plate 3 at the mounting groove 2. The side plate 3 is removed from one end of the partition cover 1. At this time, the object required by the Karl Fischer moisture analyzer is added into the interior of the partition cover 1 to facilitate the addition of tools.

[0026] The bottom outer wall of the side panel 3 is fitted with a second adhesive pad 5, and the bottom outer wall of the partition cover 1 is fitted with a first adhesive pad 4. When the partition cover 1 is lowered, it contacts the outer wall of the workbench through the first adhesive pad 4 and the second adhesive pad 5. Pressing the partition cover 1 downwards seals the connection between the first adhesive pad 4 and the second adhesive pad 5.

[0027] The partition cover 1 has operation ports 8 at both ends on one side of its outer wall, and operation gloves 9 are provided in the operation ports 8. The partition cover 1 has a thread hole 10 on one side of its outer wall, and a sealing sleeve 11 is fitted in the thread hole 10. After the materials are prepared, the personnel can put their hands into the operation gloves 9 in the operation port 8 to operate the Karl Fischer moisture analyzer. The observation surface 6 on the partition cover 1 makes it easy for personnel to observe the inside of the partition cover 1 and makes it easy to use.

[0028] The fan 18 and the lighting lamp 12 are connected to the controller via wires, and the controller is connected to the power supply via wires. The humidity sensor 13 is connected to the signal input terminal of the controller via a signal line.

[0029] Example 2:

[0030] Reference Figure 1-3 The drying structure 7 includes a mounting block 14 installed on the outer wall of the partition cover 1, a connecting groove 15 opened at both ends of the outer wall of one side of the mounting block 14, a sliding groove 16 opened in the middle of the outer wall of one side of the mounting block 14, a storage hopper 17 slidably connected to the inner wall of the sliding groove 16, and a fan 18 installed on the inner wall of the connecting groove 15 at the bottom of the mounting block 14. The fan 18 draws air from inside the partition cover 1 through the mounting block 14 and the air inlet 22, and then blows the gas into the interior of the partition cover 1 through the exhaust port 21, driving the airflow inside the partition cover 1 to rotate, which facilitates air mixing, facilitates control of internal humidity, and facilitates use.

[0031] The outer wall of the partition cover 1 is provided with an air inlet 22 and an exhaust 21 at the connecting groove 15 of the mounting block 14, and the connecting groove 15 of the mounting block 14 is provided with an air outlet at the exhaust 21 and the air inlet 22.

[0032] The output end of the fan 18 is connected to the air port at the exhaust port 21, and molecular sieve particles and silica gel particles are placed on the inner wall of the storage hopper 17. The fan 18 draws gas through the storage hopper 17, the vent 19 and the molecular sieve and silica gel particles. During this process, the particles adsorb the humidity in the air.

[0033] A sealing plate 20 is installed on one side of the outer wall of the mounting block 14 at the connection groove 15 and the sliding groove 16, and the outer wall of the storage hopper 17 is provided with equidistant ventilation holes 19. The sealing plate 20 on one side of the outer wall of the mounting block 14 is removed, and the storage hopper 17 is pulled out from the sliding groove 16 of the mounting block 14, which facilitates the replacement of the silica gel particles and molecular sieve inside the storage hopper 17 and facilitates the replacement of consumables.

[0034] Working principle: In use, place the Karl Fischer moisture analyzer on the workbench. First, fit the outer wall of the power cord of the Karl Fischer moisture analyzer into the sealing sleeve 11. Then, insert the sealing sleeve 11 into the wire hole 10. Lower the partition cover 1 so that it contacts the outer wall of the workbench through the first adhesive pad 4 and the second adhesive pad 5. Press the partition cover 1 down to seal the connection between the first adhesive pad 4 and the second adhesive pad 5. The humidity sensor 13 detects the humidity inside the partition cover 1. The controller sets the required drying value, and then the controller starts the fan. The fan 18 starts inside the connecting groove 15 of the mounting block 14, drawing gas from the partition hood 1 into the connecting groove 15 at the top of the mounting block 14 through the air inlet 22. The fan 18 draws the gas through the storage hopper 17, the vent 19, and the molecular sieve and silica gel particles. During this process, the particles adsorb the humidity in the air. Then the fan 18 delivers the gas back into the partition hood 1, circulating to control the humidity of the air in the partition hood 1. Once the humidity reaches the control range, a Karl Fischer moisture meter is used for operation, which is convenient to use.

[0035] The exemplary embodiments of the present invention have been described in detail herein with reference to examples. However, those skilled in the art will understand that various modifications and alterations can be made to the specific embodiments described above without departing from the spirit of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims. The foregoing description of specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A dehumidification device for a Karl Fischer moisture meter, comprising a partition cover (1), characterized in that, An observation surface (6) is provided at the top of one side of the outer wall of the partition cover (1), and a drying structure (7) is installed at the center of one side of the outer wall of the partition cover (1). Lighting lamps (12) are installed at both ends of the top inner wall of the partition cover (1), and humidity sensors (13) are installed at equal intervals on the top inner wall of the partition cover (1). The drying structure (7) includes a mounting block (14) installed on the outer wall of the partition cover (1), a connecting groove (15) opened at both ends of the outer wall of one side of the mounting block (14), a sliding groove (16) opened in the middle of the outer wall of one side of the mounting block (14), a storage hopper (17) slidably connected to the inner wall of the sliding groove (16), and a fan (18) installed on the inner wall of the connecting groove (15) at the bottom of the mounting block (14).

2. The dehumidification device for a Karl Fischer moisture meter according to claim 1, characterized in that, The outer wall of the partition cover (1) is provided with an air inlet (22) and an exhaust hole (21) at the connecting groove (15) of the mounting block (14), and the connecting groove (15) of the mounting block (14) is provided with an air outlet at the exhaust hole (21) and the air inlet (22).

3. The dehumidification device for a Karl Fischer moisture meter according to claim 1, characterized in that, The output end of the blower (18) is connected to the air port at the exhaust hole (21), and molecular sieve particles and silica gel particles are placed on the inner wall of the storage hopper (17).

4. A dehumidification device for a Karl Fischer moisture meter according to claim 1, characterized in that, A sealing plate (20) is installed on one side of the outer wall of the mounting block (14) at the connection groove (15) and the sliding groove (16), and the outer wall of the storage hopper (17) is provided with equidistant ventilation holes (19).

5. A dehumidification device for a Karl Fischer moisture meter according to claim 1, characterized in that, The partition cover (1) has an installation groove (2) on one end of its outer wall, and a side plate (3) is installed on the partition cover (1) at the installation groove (2).

6. A dehumidification device for a Karl Fischer moisture meter according to claim 5, characterized in that, The bottom outer wall of the side plate (3) is fitted with a second fitting pad (5), and the bottom outer wall of the partition cover (1) is fitted with a first fitting pad (4).

7. A dehumidification device for a Karl Fischer moisture meter according to claim 1, characterized in that, The partition cover (1) has operation ports (8) at both ends on one side of its outer wall, and the partition cover (1) is provided with operation gloves (9) in the operation ports (8). The partition cover (1) has a thread hole (10) on one side of its outer wall, and a sealing sleeve (11) is fitted in the thread hole (10).

8. A dehumidification device for a Karl Fischer moisture meter according to claim 1, characterized in that, The fan (18) and the lighting lamp (12) are connected to the controller via wires, and the controller is connected to the power supply via wires. The humidity sensor (13) is connected to the signal input terminal of the controller via a signal line.