Sampling device

Abstract

The utility model provides sampling equipment, which relates to the technical field of lithium batteries, and is characterized in that a material distributing cavity capable of allowing samples to enter is arranged in a material distributor, and a plurality of first channels are distributed on the bottom wall of the material distributing cavity; a valve assembly used for controlling on-off of each first channel is arranged in the material distribution cavity. The stockers are in one-to-one correspondence with the distributors, and the stockers are connected with the bottoms of the distributors; a material storage cavity is formed in the material storage device, and the material storage cavity and the material distribution cavity can communicate through a first channel. Through the arrangement of the distributor and the stocker, samples taken out from different positions of the storage container can be conveniently sub-packaged, and confusion is avoided; by detecting and comparing the samples in the storage cavities, the mass of the lithium salt in the storage container can be reflected more accurately, and a more accurate detection result can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a sampling device. Background Art

[0002] With the rapid development of new energy vehicles, the use of lithium salts, a primary raw material for lithium secondary batteries, is increasing. These lithium salts, such as lithium hexafluorophosphate, are powders that, when exposed to air, undergo a violent decomposition reaction with moisture, emitting corrosive white fumes. Therefore, contact between lithium salts and air is strictly prohibited.

[0003] Lithium salts are often stored in storage containers (under nitrogen protection). Sampling operations can be performed after connecting the sampling equipment to the discharge port of the storage container.

[0004] To expand the sampling range, sampling is often performed from multiple locations within the lithium salt storage container. However, because current sampling devices typically only have a single cavity for accommodating a sample, multiple sampling devices must be prepared to accommodate each sample, creating inconvenience in the sampling process. Utility Model Content

[0005] In view of the above situation, the present invention provides a sampling device, which aims to solve the technical problem that existing sampling devices usually have only one cavity for accommodating samples, resulting in the need to prepare multiple sampling devices to respectively hold corresponding samples, which brings inconvenience to the sampling operation.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The utility model provides a sampling device, comprising: a material distributor and a material storage device;

[0008] The distributor has a distribution cavity for the sample to enter, and a plurality of first channels are distributed on the bottom wall of the distribution cavity; a valve assembly for controlling the opening and closing of each first channel is provided in the distribution cavity;

[0009] The accumulator corresponds to the distributor in one-to-one relationship, and the accumulator is connected to the bottom of the distributor; a storage cavity is provided in the accumulator, and the storage cavity and the distributor cavity can be communicated through a first channel.

[0010] In some embodiments of the present invention, the valve assembly includes a valve plate and a rotating shaft;

[0011] The lower side of the valve plate is a sealing surface and is in sliding sealing contact with the inner side of the bottom wall of the material distribution chamber; a second channel that can be connected to a first channel is opened on the valve plate;

[0012] The rotating shaft is rotatably and sealingly connected to the center of the bottom wall of the material distribution cavity, and the upper end of the rotating shaft is connected to the valve plate.

[0013] In some embodiments of the present invention, the upper side of the valve plate has a groove, and the top of the second channel is located at the lowest point of the groove.

[0014] In some embodiments of the present invention, the valve assembly further comprises a spring, and the restoring force of the spring is used to make the lower side of the valve plate and the inner side of the bottom wall of the material distribution chamber in close contact.

[0015] In some embodiments of the present invention, the spring is sleeved on the rotating shaft.

[0016] In some embodiments of the present invention, the lower end of the rotating shaft has a hand-tightening portion.

[0017] In some embodiments of the present invention, the storage container is made of stainless steel.

[0018] In some embodiments of the present invention, a protrusion is provided on one side of the hand-tightening portion, and the protrusion and the second channel are located on the same side of the rotating shaft.

[0019] In some embodiments of the present invention, three first channel circular arrays are located in the middle of the bottom wall of the material distribution cavity.

[0020] In some embodiments of the present invention, a transfer pipe is further included, one end of which is connected to a storage container for storing lithium salt, and the other end of which is connected to a distributor.

[0021] The embodiments of the present invention have at least the following advantages or beneficial effects:

[0022] By setting up the divider and the storage container, samples taken from different positions of the storage container can be conveniently packaged to avoid confusion; by testing and comparing the samples in each storage cavity, the quality of the lithium salt in the storage container can be more accurately reflected, and more accurate test results can be obtained.

[0023] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a structural diagram of the sampling container;

[0026] Figure 2This is a schematic structural diagram of three circular arrays of first channels in the middle of the bottom wall of the material distribution chamber;

[0027] Figure 3 Schematic diagram of the structure of the second channel.

[0028] Icons: 1- material distributor, 11- material distributor chamber, 12- first channel, 13- valve plate, 14- rotating shaft, 15- second channel, 16- groove, 17- spring, 18- hand-tightening part, 19- bump, 2- storage container, 21- storage chamber. DETAILED DESCRIPTION

[0029] In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention.

[0030] In the description of the embodiments of the present invention, it should be understood that the terms "center", "upper", "lower", "bottom", "inside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0032] In the embodiments of the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0033] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] Example

[0035] See also Figures 1 to 3This embodiment provides a sampling device, including a transfer pipe (not shown in the figure) and a sampling container, one end of the transfer pipe is connected to the storage container for storing lithium salt through a flange, and the other end is connected to the distributor 1 of the sampling container through a flange.

[0036] The sampling container includes a distributor 1 and a storage container 2.

[0037] The distributor 1 includes a distribution chamber 11, which is connected to a transfer pipe to facilitate the entry of lithium salt samples into the distributor 1. Multiple first channels 12 are distributed along the bottom wall of the distribution chamber 11. A valve assembly is also provided within the distribution chamber 11 to control the opening and closing of each first channel 12. In this embodiment, three first channels 12 are arranged in a circular array in the middle of the bottom wall of the distribution chamber 11.

[0038] The accumulator 2 corresponds to the distributor 1 one by one, and the accumulator 2 is integrally connected to the bottom of the distributor 1 ; the accumulator 2 has a storage cavity 21 therein, and the storage cavity 21 and the distributor cavity 11 can be communicated through the first channel 12 .

[0039] The provision of a transfer pipe facilitates the connection of the sampling container to the storage container for storing lithium salts. The provision of the divider 1 and the storage container 2 facilitates the separation of samples taken from different locations of the storage container to avoid confusion. By testing and comparing the samples in each storage cavity 21, the quality of the lithium salt in the storage container can be more accurately reflected, resulting in more accurate test results.

[0040] The valve assembly includes a valve plate 13 and a rotating shaft 14 .

[0041] The lower side of the valve plate 13 is a sealing surface and is in sliding sealing contact with the inner side of the bottom wall of the material distribution chamber 11. A second channel 15 that can be connected to a first channel 12 is opened on the valve plate 13.

[0042] The rotating shaft 14 is rotatably and sealingly connected to the center of the bottom wall of the material distribution chamber 11 , and the upper end of the rotating shaft 14 is connected to the valve plate 13 .

[0043] Rotating the shaft 14 can rotate the valve plate 13. When the second channel 15 is aligned with a first channel 12, the two are connected, and the lithium salt located in the distribution chamber 11 can enter the corresponding storage chamber 21 through the second channel 15 and the first channel 12; when sampling other positions of the storage container, the connecting pipe is connected to the corresponding interface on the storage container, and the shaft 14 is rotated again to align the second channel 15 with another first channel 12, so that the lithium salt in the distribution chamber 11 enters the corresponding storage chamber 21, thereby realizing the packaging of samples at different sampling positions.

[0044] Furthermore, the upper side of the valve plate 13 has a groove 16 , and the top of the second channel 15 is located at the lowest point of the groove 16 to prevent lithium salt from remaining on the valve plate 13 .

[0045] Furthermore, the valve assembly includes a spring 17. The restoring force of the spring 17 is used to keep the lower side of the valve plate 13 in close contact with the inner side of the bottom wall of the dispensing chamber 11, thereby preventing powdered lithium salt from entering the gap between the valve plate 13 and the dispensing chamber 11. Specifically, the lower end of the rotating shaft 14 has a hand-tightening portion 18, and the spring 17 is mounted on the rotating shaft 14. One end of the spring 17 is connected to the bottom of the distributor 1, and the other end is connected to the hand-tightening portion 18.

[0046] In this embodiment, the sampling container is made of stainless steel. To facilitate observation of the alignment of the second channel 15 with the first channel 12, a bump 19 is provided on one side of the hand-tightening portion 18. The bump 19 and the second channel 15 are located on the same side of the rotating shaft 14. Thus, when the bump 19 points toward a particular hopper 2, the second channel 15 is aligned with the first channel 12 corresponding to that hopper 2. In other embodiments, a transparent observation window can be provided on each hopper 2 to observe which hopper 2 the lithium salt has fallen into.

[0047] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will appreciate that the present invention is susceptible to various modifications and variations. The embodiments and features of the embodiments of this application may be combined arbitrarily without conflict. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A sampling device, characterized in that: Including distributor and storage device; The distributor has a distribution cavity for the sample to enter, and a plurality of first channels are distributed on the bottom wall of the distribution cavity; a valve assembly for controlling the opening and closing of each of the first channels is provided in the distribution cavity; The accumulator corresponds to the distributor in a one-to-one manner, and the accumulator is connected to the bottom of the distributor; a storage cavity is provided in the accumulator, and the storage cavity and the distributor cavity can be communicated through the first channel.

2. The sampling device according to claim 1, characterized in that The valve assembly includes a valve plate and a rotating shaft; The lower side of the valve plate is a sealing surface and is in sliding sealing contact with the inner side of the bottom wall of the material distribution chamber; a second channel that can be connected to one of the first channels is opened on the valve plate; The rotating shaft is rotatably and sealedly connected to the center of the bottom wall of the material distribution chamber, and the upper end of the rotating shaft is connected to the valve plate.

3. The sampling device according to claim 2, characterized in that The upper side of the valve plate has a groove, and the top of the second channel is located at the lowest point of the groove.

4. The sampling device according to claim 2, characterized in that The valve assembly further comprises a spring, the restoring force of the spring being used to bring the lower side of the valve plate into close contact with the inner side of the bottom wall of the material dispensing cavity.

5. The sampling device according to claim 4, characterized in that The spring is sleeved on the rotating shaft.

6. The sampling device according to claim 2, characterized in that The lower end of the rotating shaft is provided with a hand-tightening portion.

7. The sampling device according to claim 1, characterized in that The material storage container is made of stainless steel.

8. The sampling device according to claim 6, characterized in that A protrusion is provided on one side of the hand-tightening portion, and the protrusion and the second channel are located on the same side of the rotating shaft.

9. The sampling device according to claim 1, characterized in that The three first channels are arranged in a circular array in the middle of the bottom wall of the material distribution cavity.

10. The sampling device according to any one of claims 1 to 9, characterized in that: It also includes a transfer pipe, one end of which is connected to a storage container for storing lithium salt, and the other end of which is connected to the distributor.

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