Sample weighing bottle of Karl Fischer moisture meter

Abstract

The utility model relates to the technical field of sample weighing bottles, in particular to a Karl Fischer moisture meter sample weighing bottle which comprises a bottle body and a bottle cap matched with the bottle body, the bottle cap covers the bottle body, the bottle body comprises a storage portion and an annular support, the bottom of the storage portion is connected with the annular support, and the annular support is connected with the bottle cap. And a torsion opening and closing device is arranged between the storage part and the annular support. Opening and closing of the discharging channel at the bottom end of the sample weighing bottle are controlled by twisting the opening and closing device, the structure is exquisite, the discharging channel is matched with the titration cell, a sample can be directly added into the titration cell through the discharging channel, and the weight of the measured sample is rapidly obtained by weighing the weight difference between the front weight and the rear weight of the sample weighing bottle. In the whole process, the weighing sample is prevented from being exposed in the air to influence the detection precision of the sample, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing bottles, in particular to a weighing bottle for a Karl Fischer moisture meter. Background Art

[0002] The Karl Fischer moisture determination method is based on the principle that a certain amount of water is required to participate in the reaction when iodine oxidizes sulfur dioxide. It is the most specific and accurate method for detecting moisture among various chemical analysis methods. When testing trace moisture with a Karl Fischer moisture meter, before measuring a sample, it is necessary to accurately weigh a standard water sample with a balance to calibrate the Karl Fischer moisture meter. When testing a sample, after weighing the sample, it is necessary to transfer the sample to the titration cell as soon as possible to avoid sample deliquescence.

[0003] For some samples that are extremely hygroscopic in the air, during the weighing process before sample detection, the sample will absorb moisture from the air when exposed to the air, which has an adverse effect on the test results; in addition, for some flaky samples, it is not easy to add them to the titration cell, and they often spill outside the titration cell during addition, which has an adverse effect on adding the sample. Content of the Utility Model

[0004] In view of the above problems, the utility model provides a weighing bottle for a Karl Fischer moisture meter to solve the problems that the sample absorbs moisture when exposed to the air during weighing in the prior art and that it is not convenient to add flaky samples to the titration cell.

[0005] To achieve the above object, the utility model provides a weighing bottle for a Karl Fischer moisture meter, which includes a bottle body and a bottle cap that is arranged in a matching manner with the bottle body, and the bottle cap is covered on the bottle body;

[0006] The bottle body includes a storage part and an annular support, the bottom of the storage part is connected to the annular support, and a torsion opening and closing device is arranged between the storage part and the annular support;

[0007] The torsion opening and closing device includes a torsion ring and a plurality of inner baffles. The plurality of inner baffles are all rotatably connected to the bottom of the storage part. The torsion ring is sleeved outside the inner baffles. A plurality of rack segments are arranged on the inner side of the torsion ring. An arc-shaped tooth is arranged at one end of each inner baffle. The arc-shaped tooth meshes with the rack segment. When the ends of the plurality of inner baffles away from the torsion ring are joined together, it is in a closed state, and when the ends of the plurality of inner baffles away from the torsion ring are separated, it is in an open state.

[0008] Further, the lower part of the inner cavity of the storage part is conical.

[0009] Further, a discharge channel is arranged in the middle of the annular support, and a flap opening and closing device is arranged at the bottom of the discharge channel.

[0010] Further, the flap opening and closing device includes four groups of hinges, flaps, and toggle levers that cooperate with each other. The fixed ends of the hinges are all connected to the bottom of the discharge channel. Each group of the flaps and the toggle levers are connected to the movable ends of the hinges. The flaps are right-angled sectors, and the flaps are connected to the inner sides of the hinges. The four groups of flaps are spliced together to close the discharge channel. The toggle levers are connected to the outer sides of the hinges, and the toggle levers are used to control the opening and closing of the flaps.

[0011] Further, a groove is opened in the lower part of the outer wall of the discharge channel. The groove cooperates with the toggle lever, and the groove is used to place the toggle lever when the flap opening and closing device is opened.

[0012] Further, a return spring is connected between the fixed end and the movable end of the hinge.

[0013] Further, a soft rubber plug is provided at the center of the bottle cap. The soft rubber plug is provided with a socket for inserting a grinding rod.

[0014] Advantages of the present utility model:

[0015] The present utility model controls the opening and closing of the discharge channel at the bottom end of the weighing bottle through a torsion opening and closing device. The structure is delicate. The discharge channel is matched with the titration cell. The sample can be directly added into the titration cell through the discharge channel. By weighing the weight difference before and after the weighing bottle, the weight of the measured sample can be quickly obtained. The whole process avoids the weighing sample being exposed to the air and affecting the detection accuracy of the sample, and improves the detection efficiency;

[0016] In the present utility model, a torsion opening and closing device is adopted to control the opening and closing of the discharge channel. The discharge channel can be docked with the titration cell, so that the sample can be conveniently added from the weighing bottle into the titration cell, making the sample addition process smoother and faster, reducing the exposure time of the test sample in the air, and improving the accuracy of sample detection;

[0017] In the present utility model, a flap opening and closing device is provided at the discharge port of the discharge channel. The flap opening and closing device automatically opens when the discharge channel is docked with the titration cell, facilitating the sample to enter the titration cell. When the discharge channel is separated from the titration cell, the flap shell core device closes to prevent the remaining sample from spilling out of the discharge channel;

[0018] The bottle cap of the present utility model is equipped with a grinding rod. The grinding rod is arranged in the soft rubber plug, enabling the grinding rod to move at a large angle in the weighing bottle and quickly achieving the grinding effect. Description of the drawings

[0019] To more clearly illustrate the technical solution of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic cross-sectional view of the overall structure of the weighing bottle;

[0021] Figure 2 It is a schematic structural view of the torsion opening and closing device;

[0022] Figure 3 It is a schematic structural view of the flap opening and closing device;

[0023] Among them, 1 - bottle cap, 2 - storage part, 3 - annular support, 4 - torsion opening and closing device, 41 - torsion ring, 42 - inner baffle, 43 - rack section, 44 - arc tooth, 5 - discharge channel, 51 - groove, 6 - flap opening and closing device, 61 - hinge, 62 - flap, 63 - lever, 7 - soft rubber plug, 8 - grinding rod. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] In a specific embodiment of the present utility model, as Figure 1 shown, a weighing bottle for a Karl Fischer moisture meter includes a bottle body and a bottle cap 1 that is provided in a matching manner with the bottle body, and the bottle cap 1 is covered on the bottle body;

[0026] The bottle body includes a storage part 2 and an annular support 3. The lower part of the inner cavity of the storage part 2 is conical. The bottom of the storage part 2 is connected to the annular support 3. A torsion opening and closing device 4 is provided between the storage part 2 and the annular support 3. An outlet channel 5 is provided in the middle of the annular support 3, and a flap opening and closing device 6 is provided at the bottom of the outlet channel 5.

[0027] As Figure 2As shown, the torsion opening and closing device 4 includes a torsion ring 41 and a plurality of inner baffles 42. The plurality of inner baffles 42 are all rotatably connected to the bottom of the storage part 2. The torsion ring 41 is sleeved outside the inner baffles 42. A plurality of rack segments 43 are arranged on the inner side of the torsion ring 41. An arc tooth 44 is arranged at one end of each inner baffle 42. The arc tooth 44 meshes with the rack segment 43. When the ends of the plurality of inner baffles 42 away from the torsion ring 41 are joined together, it is in a closed state. When the ends of the plurality of inner baffles 42 away from the torsion ring 41 are separated, it is in an open state.

[0028] As Figure 3 shown, the flap opening and closing device 6 includes four groups of hinges 61, flaps 62 and toggle levers 63 that cooperate with each other. The fixed ends of the hinges 61 are all connected to the bottom of the discharge channel 5. Each group of flaps 62 and toggle levers 63 are connected to the movable ends of the hinges 61. The flap 62 is a right-angled sector, and the flap 62 is connected to the inner side of the hinge 61. The four groups of flaps 62 are spliced together to close the discharge channel 5. The toggle lever 63 is connected to the outer side of the hinge 61. The toggle lever 63 is used to control the opening and closing of the flap 62. A groove 51 is opened in the lower part of the outer wall of the discharge channel 5. The groove 51 cooperates with the toggle lever 63. The groove 51 is used to place the toggle lever 63 when the flap opening and closing device 6 is opened. A return spring is connected between the fixed end and the movable end of the hinge 61.

[0029] A soft rubber plug 7 is provided at the center of the bottle cap 1. The soft rubber plug 7 is provided with a socket for inserting a grinding rod 8.

[0030] The usage process of the present utility model:

[0031] Put the sheet sample to be tested into the weighing bottle. At this time, the inner baffles 42 of the torsion opening and closing device 4 are closed and joined together. The sample is stored in the weighing bottle. Use the grinding rod 8 to grind the sample to reduce the sample size;

[0032] Insert the discharge channel 5 of the weighing bottle into the sample inlet of the titration cell. The annular support 3 at the bottom of the weighing bottle supports around the sample inlet of the titration cell to keep the weighing bottle stable, which is convenient for personnel to further operate. At this time, the toggle lever 63 of the flap opening and closing device 6 is pushed by the sample inlet of the titration cell, and the toggle lever 63 is pushed into the groove 51, so that the flap 62 is opened downward. Rotate the torsion ring 41 of the torsion opening and closing device 4, the inner baffle 42 is opened, and the sample enters the titration cell from the discharge channel 5. The grinding rod 8 can also be used to push the sample;

[0033] After the sample addition is completed, twist the torsion ring 41 to make the inner baffle 42 close again, stop the sample injection, remove the weighing bottle. Under the action of the return spring in the hinge 61, the flap 62 is lifted upward and closed, which can prevent the remaining sample from scattering everywhere. Weigh the weighing bottle before and after the sample addition, and the weight of the added sample can be obtained.

[0034] All the preferred and optional technical means disclosed by the present utility model, except as otherwise specifically stated or one preferred or preferably applicable technical means further limits another technical means, can be arbitrarily combined to form several different technical solutions. Therefore, equivalent changes made according to the claims still fall within the scope covered by the present utility model.

Claims

1. A Karl Fischer titrator weighing bottle, characterized in that: It comprises a bottle body and a bottle cap (1) matched with the bottle body, wherein the bottle cap (1) is covered on the bottle body; The bottle body comprises a storage portion (2) and an annular support (3); the bottom of the storage portion (2) is connected to the annular support (3); and a twisting opening and closing device (4) is provided between the storage portion (2) and the annular support (3); The twisting opening and closing device (4) comprises a twisting ring (41) and a plurality of inner baffles (42), wherein the plurality of inner baffles (42) are rotatably connected to the bottom of the storage portion (2), the twisting ring (41) is sleeved on the outer side of the inner baffles (42), and a plurality of rack segments (43) are arranged on the inner side of the twisting ring (41), and an arc-shaped tooth (44) is arranged at one end of each of the inner baffles (42), and the arc-shaped tooth (44) is meshed with the rack segment (43). When the ends of the plurality of inner baffles (42) away from the twisting ring (41) are assembled, they are in a closed state, and when the ends of the plurality of inner baffles (42) away from the twisting ring (41) are detached, they are in an open state.

2. A Karl Fischer titrator weighing bottle according to claim 1, characterized in that: The lower part of the inner cavity of the storage part (2) is conical.

3. A Karl Fischer titrator weighing bottle according to claim 1, characterized in that: A discharge channel (5) is provided in the middle of the annular support (3), and a flap opening and closing device (6) is provided at the bottom of the discharge channel (5).

4. A Karl Fischer titrator weighing bottle according to claim 3, characterized in that: The flap opening and closing device (6) comprises four groups of hinges (61), flaps (62) and levers (63) that cooperate with each other. The fixed ends of the hinges (61) are connected to the bottom of the discharge channel (5). The flaps (62) and levers (63) of each group are connected to the movable ends of the hinges (61). The flaps (62) are in the shape of a right-angle fan and are connected to the inner side of the hinges (61). The four groups of flaps (62) are spliced ​​together to close the discharge channel (5). The levers (63) are connected to the outer side of the hinges (61). The levers (63) are used to control the opening and closing of the flaps (62).

5. A Karl Fischer titrator weighing bottle according to claim 4, characterized in that: A groove (51) is provided at the lower portion of the outer wall of the discharge channel (5), and the groove (51) cooperates with the lever (63). The groove (51) is used to place the lever (63) when the flap opening and closing device (6) is opened.

6. A Karl Fischer titrator weighing bottle according to claim 4, characterized in that: A return spring is connected between the fixed end and the movable end of the hinge (61).

7. A Karl Fischer titrator weighing bottle according to claim 1, characterized in that: A soft rubber plug (7) is arranged at the center of the bottle cap (1), and the soft rubber plug (7) is provided with a socket, and the socket is used for inserting a grinding rod (8).

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