Fixed moisture detection device based on Karl Fischer moisture meter

Abstract

The utility model provides a fixed moisture detection device based on a Karl-Fischer moisture meter, which comprises a Karl-Fischer moisture meter, a pressure-bearing bag and a tightening piece, wherein the Karl-Fischer moisture meter comprises a sample device, and the sample device is provided with a reaction chamber, a sample inlet and a sample inlet channel communicated with the sample inlet and the reaction chamber; a cap is arranged at the sample inlet, and an air inlet and an air outlet are formed in the side wall of the sample inlet channel; the gas inlet and the gas outlet are oppositely formed in two sides of the sample introduction channel, and valves for controlling the gas inlet and the gas outlet to be opened and closed are respectively arranged at the gas inlet and the gas outlet; the pressure-bearing bag is used for sleeving a sample inlet of the moisture meter; and the tightening piece is used for tightening the pressure-bearing bag and the sample injection port. According to the utility model, solid raw materials can be rapidly detected by using a glove box for operation, so that the timeliness and convenience of detection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of moisture detection of solid materials, and particularly relates to a fixed moisture detection device based on a Karl Fischer moisture meter. Background Art

[0002] In the process of detecting electrolyte raw materials, many solid raw materials, such as solids like LiPF6 and LiODFB, need to be detected for their moisture content by dissolving them in a solvent in a glove box, and the moisture content of the solvent needs to be detected additionally. The process is very cumbersome, seriously affecting the timeliness and accuracy of the detection of solid raw materials. Moreover, with the continuous development of the electrolyte industry, how to safely, quickly and effectively detect solid raw materials has become one of the urgent problems to be solved today. Content of the Utility Model

[0003] In order to solve the technical problems existing in the background art, the utility model proposes a fixed moisture detection device based on a Karl Fischer moisture meter.

[0004] A fixed moisture detection device based on a Karl Fischer moisture meter proposed by the utility model includes: a Karl Fischer moisture meter, a pressure-bearing bag, and a tightening member, wherein:

[0005] The Karl Fischer moisture meter includes a sampler, the sampler has a reaction chamber, a sample inlet, and a sample inlet channel connecting the sample inlet and the reaction chamber; a cap is provided at the sample inlet, and an air inlet and an air outlet are provided on the side wall of the sample inlet channel; the air inlet and the air outlet are oppositely arranged on both sides of the sample inlet channel, and valves for controlling their on-off are respectively provided at the air inlet and the air outlet;

[0006] The pressure-bearing bag is used to cover the sample inlet of the moisture meter;

[0007] The tightening member is used to tie the pressure-bearing bag and the sample inlet tightly.

[0008] Preferably, the air inlet is located below the air outlet.

[0009] Preferably, it further includes a test tube for holding the sample and a sealing plug installed at the port of the test tube.

[0010] Preferably, the sealing plug is thread-sealed with the port of the test tube.

[0011] Preferably, internal threads are provided at the port of the test tube, and the sealing plug has external threads adapted to the internal threads.

[0012] Preferably, external threads are provided at the sample inlet; the cap is an internal thread cap and is screwed onto the sample inlet.

[0013] Preferably, the valve is a stopcock valve.

[0014] Preferably, the tightening member is a rubber band, or a cable tie, or a string.

[0015] Preferably, the pressure-bearing bag is made of an airtight flexible material.

[0016] Preferably, the pressure-bearing bag is made of plastic.

[0017] In the present utility model, an air inlet and an air outlet are provided on the side wall of the sample introduction channel of the sampler, and valves for controlling their on-off are respectively provided at the air inlet and the air outlet; meanwhile, a pressure-bearing bag and a tightening member are provided. During the detection operation, the sample is pre-placed in the pressure-bearing bag, the pressure-bearing bag is sleeved at the sample inlet and tightened by the tightening member; then, the cap of the sample inlet, the valves of the air inlet and the air outlet are opened, nitrogen is filled into the pressure-bearing bag, and the air inside the pressure-bearing bag is discharged to ensure that the inside of the pressure-bearing bag is in a nitrogen environment; the air inlet and the air outlet are closed, and the sample is poured into the sampler, and then the detection can be carried out by a Karl Fischer moisture analyzer. This structural design can quickly detect solid raw materials without using a glove box, improving the timeliness and convenience of detection. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a fixed moisture detection device based on a Karl Fischer moisture analyzer proposed by the present utility model. Detailed Embodiments

[0019] Refer to Figure 1 A fixed moisture detection device based on a Karl Fischer moisture analyzer proposed by the present utility model includes: a Karl Fischer moisture analyzer, a pressure-bearing bag 2, and a tightening member 3, wherein:

[0020] The Karl Fischer moisture analyzer includes a sampler 1, the sampler 1 has a reaction chamber, a sample inlet, and a sample introduction channel connecting the sample inlet and the reaction chamber; a cap 9 is provided at the sample inlet, and an air inlet 4 and an air outlet 5 are provided on the side wall of the sample introduction channel; the air inlet 4 and the air outlet 5 are oppositely arranged on both sides of the sample introduction channel, and valves 6 for controlling their on-off are respectively provided at the air inlet 4 and the air outlet 5. The pressure-bearing bag 2 is used to be sleeved at the sample inlet of the moisture analyzer. The tightening member 3 is used to tighten the pressure-bearing bag 2 and the sample inlet.

[0021] During the moisture determination, the sample is pre-placed in the pressure-bearing bag 2, the pressure-bearing bag 2 is sleeved at the sample inlet and tightened by the tightening member 3. Then, the cap 9 of the sample inlet, and the valves 6 of the air inlet 4 and the air outlet 5 are opened, and nitrogen is filled into the pressure-bearing bag 2 through the air inlet 4, and the air inside the pressure-bearing bag 2 is discharged through the air outlet 5, and this operation is repeated multiple times to ensure that the inside of the pressure-bearing bag 2 is in a nitrogen environment. When the inside of the pressure-bearing bag 2 is in a nitrogen environment, the air inlet 4 and the air outlet 5 are closed, and the sample pre-placed in the bag is poured into the sampler 1.

[0022] As can be seen from the above, the structural design of the utility model can quickly detect solid raw materials without using a glove box, thereby improving the timeliness and convenience of the detection.

[0023] Furthermore, the air inlet 4 in this embodiment is located below the air outlet 5 to facilitate the charging of nitrogen and the exhaust of air.

[0024] The utility model proposes a fixed moisture detection device based on a Karl Fischer moisture meter, which also includes a test tube 7 for holding a sample and a sealing plug 8 installed at the end of the test tube 7. When performing moisture determination, the sample is pre-sealed in a pressure bag 2 using the test tube 7 and the sealing plug 8. When the interior of the pressure bag 2 is in a nitrogen environment, the air inlet 4 and the air outlet 5 are closed, and the sealing plug 8 is opened, and the sample in the test tube 7 is poured into the sampler 1 to ensure the sealing of the sample when entering the sampler 1.

[0025] Furthermore, in this embodiment, an internal thread is provided at the port of the test tube 7, and the sealing plug 8 has an external thread adapted to the internal thread. The sealing plug 8 is sealed with the port thread of the test tube 7, and the inspector can easily unscrew the sealing plug 8 through the pressure bag 2.

[0026] Similarly, in this embodiment, the sample inlet is provided with an external thread; the cap 9 is an internal thread cap 9, and is screwed on the sample inlet. The inspector can easily unscrew the cap 9 through the pressure bag 2.

[0027] Furthermore, the valve 6 in this embodiment is a plug valve. The test tube 7, the sealing plug 8, and the valve 6 in this embodiment are all made of glass.

[0028] The tightening member 3 in this embodiment is a rubber band, a cable tie, a rope, or the like.

[0029] The pressure bag 2 in this embodiment is made of airtight flexible material, such as plastic, textile material with film, etc.

[0030] As can be seen from the above, the utility model sets an air inlet 4 and an air outlet 5 on the side wall of the sampling channel, and sets valves 6 for controlling the opening and closing of the air inlet 4 and the air outlet 5 respectively; at the same time, a pressure bag 2 and a tightening member 3 are set. During the detection operation, the sample is placed in the pressure bag 2 in advance, and the pressure bag 2 is put on the sampling port and fastened by the tightening member 3; then, the cap 9 of the sampling port, the valves 6 of the air inlet 4 and the air outlet 5 are opened, and nitrogen is filled into the pressure bag 2, and the air in the pressure bag 2 is discharged to ensure that the inside of the pressure bag 2 is in a nitrogen environment; the air inlet 4 and the air outlet 5 are closed, and the sample is poured into the sampler 1, and then the sample can be detected by the Karl Fischer moisture analyzer. This structural design can quickly detect solid raw materials without using a glove box, thereby improving the timeliness and convenience of detection.

[0031] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A fixed moisture detection device based on a Karl Fischer moisture meter, characterized in that: include: Karl Fischer moisture analyzer, a pressure bag (2), and a fastening member (3), wherein: The Karl Fischer moisture meter comprises a sampler (1), the sampler (1) having a reaction chamber, a sample inlet, and a sample inlet channel connecting the sample inlet and the reaction chamber; a cap (9) is provided at the sample inlet, and a gas inlet (4) and a gas outlet (5) are provided on the side wall of the sample inlet channel; the gas inlet (4) and the gas outlet (5) are arranged on both sides of the sample inlet channel, and valves (6) for controlling the opening and closing of the gas inlet (4) and the gas outlet (5) are provided respectively; The pressure bag (2) is used to be placed on the sample inlet of the moisture meter; The tightening piece (3) is used to fasten the pressure bag (2) and the sample inlet.

2. The fixed moisture detection device based on Karl Fischer moisture meter according to claim 1, characterized in that: It also includes a test tube (7) for containing the sample and a sealing plug (8) installed at the end of the test tube (7).

3. The fixed moisture detection device based on Karl Fischer moisture meter according to claim 1, characterized in that: The air inlet (4) is located below the air outlet (5).

4. The fixed moisture detection device based on Karl Fischer moisture meter according to claim 3, characterized in that: The sealing plug (8) is thread-sealed with the end of the test tube (7).

5. The fixed moisture detection device based on Karl Fischer moisture meter according to claim 4, characterized in that: An internal thread is provided at the port of the test tube (7), and the sealing plug (8) has an external thread matching the internal thread.

6. The fixed moisture detection device based on Karl Fischer moisture meter according to claim 1, characterized in that: The injection port is provided with an external thread; the cap (9) is an internal thread cap (9) and is screwed on the injection port.

7. The fixed moisture detection device based on Karl Fischer moisture meter according to claim 1, characterized in that: The valve (6) is a plug valve.

8. The fixed moisture detection device based on Karl Fischer moisture meter according to claim 1, characterized in that: The tightening member (3) is a rubber band, a cable tie, or a cord.

9. The fixed moisture detection device based on Karl Fischer moisture meter according to any one of claims 1 to 8, characterized in that: The pressure bag (2) is made of airtight flexible material.

10. The fixed moisture detection device based on Karl Fischer moisture meter according to claim 9, characterized in that: The material of the pressure bag (2) is plastic.

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