Material sampling device and battery production equipment

Abstract

The utility model discloses a material sampling device and battery production equipment, and relates to the technical field of material sampling. The device specifically comprises a sampling pipe, a negative pressure source and a high pressure source, wherein one end of the sampling pipe is provided with a charging hole extending to a stock bin; the negative pressure source is connected to the sampling pipe outside the stock bin and is used for extracting the material at the charging hole; the high-voltage source is connected to the sampling pipe and blows out materials along the sampling pipe in the direction towards the feeding port. A sampling pipe inserted into a stock bin is adopted, a negative pressure source and a high pressure source are arranged at the outer end, located on the stock bin, of the sampling pipe, and the negative pressure source sucks a sample in a sampling pipeline into a sampling bottle through negative pressure; and compressed air is introduced into the sampling pipeline by the high-pressure source, so that residual samples in the pipeline are purged, materials are prevented from easily remaining in the pipeline, and the problem that the pipeline is blocked after the materials are accumulated is prevented.

Description

Technical Field

[0001] This utility model relates to the field of material sampling technology, and in particular to a material sampling device and battery production equipment. Background Technology

[0002] The negative pressure sampling device for lithium battery cathode materials is a device used to obtain samples from the conveying pipeline during the production process of lithium battery cathode materials. This device uses the principle of negative pressure to extract the material from the pipeline into a sampling container for quality testing and analysis.

[0003] In the prior art, in order to facilitate material sampling, a pipe is connected to the packaging barrel, and the negative pressure generated by the pipe is used to extract the material inside the packaging barrel. This ensures that the material can flow directly out of the pipe for sampling, thus ensuring the convenience of material sampling and the sealing of the packaging barrel.

[0004] However, in the above scheme, due to the negative pressure adsorption of the material in the packaging barrel by the pipeline, some material will remain in the pipeline. If the material in the pipeline is not treated in time, the material will be stored in the pipeline for a long time. The powdery material has a large specific surface area, strong ability to adsorb moisture and adhere to each other, and is prone to forming caking. This can easily lead to the accumulation of sediment and blockage, affecting subsequent sampling steps.

[0005] Therefore, this application solves the problem that after sampling in negative pressure pipelines, materials are easily left inside the pipeline and can clog it. Utility Model Content

[0006] The main purpose of this utility model is to provide a material sampling device and battery production equipment, which aims to avoid the problem of material residue in the pipeline and prevent the pipeline from being blocked after material accumulation.

[0007] To achieve the above objectives, this utility model proposes a material sampling device, comprising:

[0008] The sampling tube has a feeding port at one end that extends into the silo;

[0009] A negative pressure source, connected to the sampling tube outside the silo, is used to extract material from the feeding port; and

[0010] A high-pressure source, connected to the sampling tube, blows the material along the sampling tube toward the feeding port.

[0011] In the above scheme, the sampling tube is placed horizontally, which can greatly reduce the negative pressure. The negative pressure source can be achieved by using a combination of negative pressure equipment and pipeline. The pipeline is connected to the sampling tube, and the material in the sampling tube is extracted by the negative pressure equipment to obtain the sampled material in the silo. After the material is sampled, air is blown into the pipeline by a high-pressure source. The pipeline is connected to the end of the sampling tube by a compressor and pipeline, and high-pressure gas is delivered into the sampling tube. The gas blows the material in the sampling tube towards the feeding port and promptly blows the material into the silo to prevent the sampling tube from becoming blocked and to prevent material waste.

[0012] Furthermore, the high-pressure source is located at the interface between the negative pressure source and the sampling tube, or at the end of the negative pressure source furthest from the feeding port. When the negative pressure source is operating, it extracts material from the sampling tube, causing it to accumulate at the connection between the negative pressure source and the sampling tube. Then, the high-pressure source is activated, blowing air towards the sampling tube. This air carries the material from the sampling tube from the feeding port into the hopper, significantly reducing the risk of material blockage at the connection between the negative pressure source and the sampling tube.

[0013] Furthermore, the high-pressure source includes a compressed air pipeline connected to the sampling tube and a control valve two disposed on the compressed air pipeline. One end of the compressed air pipeline is used to connect to a compressor or air pump, so that gas can be blown from the compressed air pipeline to the sampling tube, and the control valve two is used to open or close the compressed air pipeline.

[0014] Furthermore, the negative pressure source includes a delivery pipe connected to the sampling tube, a valve body disposed on the delivery pipe, and a sampling bottle detachably connected to the end of the delivery pipe. When the valve body is opened, a negative pressure is generated inside the sampling bottle, and the material in the sampling tube flows through the delivery pipe to the sampling bottle, thereby realizing the sampling operation. After sampling is completed, the sampling bottle can be separated from the delivery pipe to obtain the sampled material.

[0015] Furthermore, the valve body includes a control valve and a feed valve respectively disposed at both ends of the conveying pipe. Only when both the control valve and the feed valve are open can the material in the sampling tube be drawn from the conveying pipe into the sampling bottle. The control valve and the feed valve respectively ensure the safety performance of the sampling tube and the sampling bottle.

[0016] Furthermore, a negative pressure pipeline is connected to the sampling bottle, and a negative pressure valve is installed on the negative pressure pipeline. The negative pressure pipeline draws gas from the sampling bottle through a negative pressure device, creating a negative pressure in the sampling bottle. Subsequently, material can be extracted from the sampling tube through a delivery pipe to achieve the sampling operation.

[0017] Furthermore, the sampling bottle is equipped with a filter at the negative pressure pipeline. Negative pressure flows into the negative pressure generator or vacuum system through the sampling bottle, negative pressure valve, and negative pressure pipeline. The material is intercepted by the filter and falls into the sampling bottle. The filter can be set with different opening sizes to minimize the amount of material flowing out and maximize the amount of material falling into the sampling bottle. This ensures that some lighter materials are removed, resulting in more uniform material selection and more standardized sampling results.

[0018] Furthermore, the sampling tube is fixed to the side wall of the silo. The sampling tube can be integrally formed on the outer wall of the silo, or it can be fixed to the side wall of the silo by welding to improve the overall sealing performance.

[0019] Furthermore, the outer wall of the sampling tube is provided with a mating flange, which is adapted and fixed to the pipe flange on the side wall of the silo. The mating flange and the pipe flange are fixed and tightened with bolts, and a gasket is also placed between the mating flange and the pipe flange to improve the overall sealing performance and the detachability of the sampling tube.

[0020] This application discloses a battery production equipment, including a battery material feeding hopper, the side wall of which is equipped with the aforementioned material sampling device. The powdery material in the hopper can be sampled using this device, eliminating the need for manual sampling with a sampling spoon after opening the hopper, thus improving the airtightness of battery production.

[0021] The above technical solution has the following advantages:

[0022] This invention employs a sampling tube inserted into a hopper, with a negative pressure source and a high pressure source located at the outer end of the sampling tube outside the hopper. The negative pressure source draws the sample from the sampling tube into a sampling bottle using negative pressure. After sampling, the high pressure source introduces compressed air into the sampling tube to purge any remaining sample. This allows for online sampling within the tube, preventing material residue from accumulating and clogging the tube, and eliminating the risks of foreign matter and moisture introduction that may occur during sampling by opening the hopper. Attached Figure Description

[0023] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] In the diagram: 1. Feed port; 2. Pipe flange; 3. Bolt; 4. Gasket; 5. Butt flange; 6. Sampling tube; 7. Control valve one; 8. Delivery pipe; 9. Feed valve; 10. Negative pressure pipeline; 11. Negative pressure valve; 12. Filter; 13. Sampling bottle; 14. Control valve two; 15. Compressed air pipeline. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0027] like Figure 1 As shown, a material sampling device includes a sampling tube 6, a negative pressure source, and a high pressure source. One end of the sampling tube 6 has a feeding port 1 extending to a hopper. The negative pressure source is connected to the sampling tube 6 outside the hopper to extract material from the feeding port 1. The high pressure source is connected to the sampling tube 6 and blows material along the sampling tube 6 towards the feeding port 1. The feeding port 1 is located at the upper part of the end of the sampling tube 6. When material falls from the hopper, a portion of it falls into the sampling tube 6 through the feeding port 1. Preferably, the sampling tube 6 is placed horizontally, which can greatly reduce the magnitude of the negative pressure. The negative pressure source can be achieved by using a combination of negative pressure equipment and pipelines. The pipeline is connected to the sampling tube 6, and the material inside the sampling tube 6 is extracted by the negative pressure equipment to obtain the sampled material in the silo. After the material sampling is completed, air is blown into the pipeline by a high-pressure source. The pipeline is connected to the end of the sampling tube 6 by a compressor and pipeline, and high-pressure gas is delivered into the sampling tube 6. The gas blows the material inside the sampling tube 6 toward the feeding port 1, and promptly blows the material into the silo to prevent the sampling tube 6 from becoming blocked and to prevent material waste.

[0028] like Figure 1 As shown, the high-pressure source is located at the interface between the negative pressure source and the sampling tube 6, or at the end of the negative pressure source away from the feeding port 1. The high-pressure source and the negative pressure source can be located in the common part of the sampling tube 6. When the high-pressure source blows air towards the sampling tube 6, it can greatly prevent material from clogging at the interface between the negative pressure source and the sampling tube 6, thus avoiding dead zones. Alternatively, the high-pressure source can be located at the end of the pipeline away from the negative pressure source, i.e., the negative pressure source is located between the high-pressure source and the feeding port 1. When the negative pressure source is working, it extracts the material in the sampling tube 6, causing the material to accumulate at the connection between the negative pressure source and the sampling tube 6. Then, the high-pressure source is turned on, blowing air towards the sampling tube 6, causing the gas to carry the material in the sampling tube 6 from the feeding port 1 into the hopper. This can greatly avoid the risk of material blockage at the connection between the negative pressure source and the sampling tube 6.

[0029] like Figure 1 As shown, the high-pressure source includes a compressed air pipeline 15 connected to the sampling tube 6 and a control valve 14 installed on the compressed air pipeline 15. One end of the compressed air pipeline 15 is used to connect to a compressor or air pump so that gas can be blown from the compressed air pipeline to the sampling tube 6. The control valve 14 is used to open or close the compressed air pipeline 15.

[0030] like Figure 1As shown, the negative pressure source includes a delivery pipe 8 connected to the sampling pipe 6, a valve body disposed on the delivery pipe 8, and a sampling bottle 13 detachably connected to the end of the delivery pipe 8. The delivery pipe 8 is connected between the sampling bottle 13 and the sampling pipe 6. When the valve body is opened, a negative pressure is generated in the sampling bottle 13, and the material in the sampling pipe 6 flows through the delivery pipe 8 to the sampling bottle 13, thereby realizing the sampling operation of the material. After the sampling is completed, the sampling bottle 13 can be separated from the delivery pipe 8 to obtain the sampled material.

[0031] Specifically, the valve body includes a control valve 7 and a feed valve 9 respectively located at both ends of the conveying pipe 8. Only when both the control valve 7 and the feed valve 9 are open can the material in the sampling tube 6 be drawn from the conveying pipe 8 into the sampling bottle 13 to complete the sampling operation. The control valve 7 and the feed valve 9 respectively ensure the safety performance of the sampling tube 6 and the sampling bottle 13.

[0032] like Figure 1 As shown, a negative pressure pipeline 10 is connected to the sampling bottle 13, and a negative pressure valve 11 is provided on the negative pressure pipeline 10. The sampling bottle 13 can be directly connected to a negative pressure pipeline 10, and the negative pressure valve 11 can open or close the negative pressure pipeline 10. The negative pressure pipeline 10 extracts the gas in the sampling bottle 13 through the negative pressure device and generates a negative pressure in the sampling bottle 13. Then, the material can be extracted from the sampling tube 6 through the delivery pipe 8 to realize the sampling operation.

[0033] The sampling bottle 13 is equipped with a filter 12 at the negative pressure pipeline 10. Negative pressure flows into the negative pressure generator or vacuum system through the sampling bottle 13, negative pressure valve 11, and negative pressure pipeline 10. The material is intercepted by the filter 12 and falls into the sampling bottle 13. Alternatively, the material can flow directly out through the negative pressure pipeline 10 and fall into the sampling bottle 13. The filter 12 can be set with an opening size to ensure that less material flows out and more material falls into the sampling bottle 13, thus removing some lighter materials, ensuring more uniform material selection, and more standardized sampling results.

[0034] like Figure 1 As shown, the sampling tube 6 is fixed on the side wall of the silo. The sampling tube 6 can be integrally formed on the outer wall of the silo, or it can be fixed on the side wall of the silo by welding to improve the overall sealing performance.

[0035] In addition, to improve the detachability of the sampling tube 6, the outer wall of the sampling tube 6 is provided with a docking flange 5, which is adapted and fixed to the pipe flange 2 on the side wall of the silo. Specifically, the docking flange 5 and the pipe flange 2 are fixed and tightened by bolts 3, and a gasket 4 is also provided between the docking flange 5 and the pipe flange 2 to improve the overall sealing performance.

[0036] A battery production equipment includes a battery material feeding hopper. A material sampling device is installed on the side wall of the feeding hopper. The battery is preferably a lithium battery powder material. When the powder material falls from the hopper, the powder material in the hopper can be sampled by the above-mentioned material sampling device, without the need for manual sampling with a sampling spoon after opening the hopper.

[0037] The operation steps are as follows:

[0038] ① Before sampling begins, open control valve 2 14 to introduce compressed air into the sampler system to purge the remaining sample in the sampling tube 6. After purging, close control valve 2 14.

[0039] ② Open the negative pressure generator or vacuum system, open control valve 7, feed valve 9, and negative pressure valve 11. The material scattered on the feeding port 1 of the sampling tube 6 flows into the sampling bottle 13 through the negative pressure via the sampling tube 6, negative pressure control valve 7, conveying pipe 8, and feed valve 9. The negative pressure flows into the negative pressure generator or vacuum system through the bottle negative pressure valve 11 and negative pressure pipeline 10 and is discharged. The material is intercepted by the filter 12 and falls into the sampling bottle 13.

[0040] ③ After sampling is completed, close control valve 7, feed valve 9, and negative pressure valve 11, disconnect the delivery pipe 8 from the feed valve 9, and the negative pressure valve 11 from the negative pressure pipeline 10, and then disassemble the sampling bottle 13 for sample delivery.

[0041] ④ Open control valve 2 14 again to introduce compressed air into the sampler system and purge the remaining sample in the sampling tube 6. After purging, close control valve 2 14 to complete the sampling operation.

[0042] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A material sampling device, characterized in that, include: The sampling tube (6) has a feeding port (1) extending to the silo at one end. A negative pressure source is connected to the sampling tube (6) outside the silo to extract the material from the feeding port (1); as well as A high-pressure source is connected to the sampling tube (6), which blows the material along the sampling tube (6) and toward the feeding port (1); The high-pressure source is located at the interface between the negative pressure source and the sampling tube (6), or at one end of the negative pressure source away from the feeding port (1); the high-pressure source and the negative pressure source can be located in the common part of the sampling tube (6). When the high-pressure source blows air toward the sampling tube (6), the obstructing material is blocked at the interface between the negative pressure source and the sampling tube (6); the negative pressure source includes a conveying pipe (8) connected to the sampling tube (6), a valve body located on the conveying pipe (8), and a sampling bottle (13) detachably connected to the end of the conveying pipe (8); the valve body includes a control valve (7) and a feed valve (9) located at both ends of the conveying pipe (8).

2. The material sampling device as described in claim 1, characterized in that, The high-pressure source includes a compressed air pipe (15) connected to the sampling pipe (6) and a control valve (14) installed on the compressed air pipe (15).

3. The material sampling device as described in claim 1, characterized in that, The sampling bottle (13) is connected to a negative pressure pipe (10), and a negative pressure valve (11) is provided on the negative pressure pipe (10).

4. The material sampling device as described in claim 3, characterized in that, The sampling bottle (13) is equipped with a filter (12) at the negative pressure pipeline (10).

5. The material sampling device as described in claim 1, characterized in that, The sampling tube (6) is fixed on the side wall of the silo.

6. The material sampling device as described in claim 5, characterized in that, The outer wall of the sampling tube (6) is provided with a connecting flange (5), which is adapted and fixed to the pipe flange (2) on the side wall of the silo.

7. A battery production equipment, characterized in that, The device includes a battery material feeding bin, and the side wall of the feeding bin is equipped with a material sampling device as described in any one of claims 1-6.

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