Stock bin structure

Abstract

The utility model relates to the technical field of lithium battery positive electrode materials, and discloses a stock bin structure, which comprises a stock bin body comprising a material storage part and a material guide part, the material guide part is arranged below the material storage part in a surrounding manner, and the material guide part is of a conical structure; at least partial area of the wall surface of the stock bin body is communicated to form an air inlet; the flow guide plate is arranged in the stock bin body, one end of the flow guide plate is connected with the stock bin body, the other end of the flow guide plate extends towards the interior of the stock bin body, a flaring cavity is defined by the area between the flow guide plate and the material guide part, the flaring cavity is communicated with the air inlet, and the flaring cavity is in an expansion state in the extending direction of the flow guide wall. Through cooperative use of the material storage part, the material guide part and the flow guide plate, the requirement for water in the stock bin body is met, and the dew point in the stock bin is controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery positive pole material technical field, concretely relates to a stock bin structure. BACKGROUND

[0002] The positive pole material buffer bin is the equipment for temporarily storing the positive pole material, ensures the continuous supply and stable delivery of the material in the production process, and the dew point of the stock bin refers to the temperature of air vapor under a certain pressure reaching the saturation state and starting to condense into liquid water. In the stock bin environment, the dew point is used for measuring the humidity level of air, due to the hygroscopicity of the positive pole material itself, and with the increase of the nickel content in the material, the hygroscopicity is also enhanced, so as to ensure that the moisture of the positive pole material meets the requirements, and different requirements of the dew point in the buffer bin of different materials are put forward.

[0003] In the related art, the method of directly passing compressed air into the stock bin is often used to reduce the dew point in the stock bin, but this method cannot guarantee the flow direction of the compressed air in the stock bin, and only relies on the free diffusion of the gas to reduce the dew point in the stock bin, which obviously cannot efficiently and accurately control the dew point in the stock bin, and the dew point in the stock bin is generally not effectively monitored, so it cannot be included in the process control range. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a stock bin structure to solve the problem of realizing the adjustable dew point in the stock bin.

[0005] The utility model provides a stock bin structure, which comprises:

[0006] The stock bin body comprises a storage part and a guide part, the guide part is perpendicularly arranged below the storage part, and the guide part is a conical structure; the wall surface of the stock bin body is at least partially formed with an air inlet;

[0007] The guide plate is arranged in the stock bin body, one end of the guide plate is connected with the stock bin body, and the other end extends towards the inside of the stock bin body; the area between the guide plate and the guide part is enclosed to form an expanding cavity, the expanding cavity is connected with the air inlet, and the expanding cavity is in an expanding state along the extension direction of the guide wall.

[0008] Beneficial effects: The conical material guiding part structure naturally guides the material downward to concentrate and reduce the accumulation dead angle; the flared cavity cooperates with the airflow introduced by the air inlet to adjust the airflow direction in the silo body. The airflow introduced by the air inlet is diffused through the flared cavity, thereby efficiently and accurately controlling the dew point in the silo. The extension length and angle of the flow guide plate can be adjusted to optimize the airflow distribution according to the characteristics of different materials, and the partial area through air inlet design meets the multi-point air inlet requirement while ensuring the structural strength. The integrated structure of the conical material guiding part and the flared cavity reduces the complex internal components, reduces the manufacturing cost and is convenient for installation and maintenance. Through the cooperation of the storage part, the material guiding part and the flow guide plate, the moisture demand in the silo body is realized, and the dew point in the silo is controlled.

[0009] In an alternative embodiment, the air inlet is arranged between the storage part and the material guiding part.

[0010] Beneficial effects: The air inlet is arranged between the storage part and the material guiding part, so that the position of the gas entering cooperates with the flow guide plate and the material guiding part, thereby enhancing the diffusion degree of the gas.

[0011] In an alternative embodiment, the included angle between the flow guide plate and the material guiding part is an acute angle, and the flow guide plate is arranged inclined downward.

[0012] Beneficial effects: The included angle between the flow guide plate and the material guiding part is an acute angle, and the flow guide plate is arranged inclined downward, which concentrates the speed of the airflow, and by adjusting the direction of the flow guide plate, different air inlet requirements are met.

[0013] In an alternative embodiment, the silo body is provided with an air outlet, and the air outlet is arranged at the top of the silo body.

[0014] Beneficial effects: By using the principle of airflow rising, the top air outlet can quickly discharge the accumulated air and water vapor in the silo, reduce the retention of gas, and adjust the dew point in the silo.

[0015] In an alternative embodiment, the shape of the flow guide plate is arc-shaped, and the arc-shaped convex surface of the flow guide plate is arranged close to the material guiding part.

[0016] Beneficial effects: The arc-shaped flow guide plate can smoothly guide the gas flow, avoiding the airflow direction confusion caused by irregular plate surface, thereby reducing the flow guiding effect of the flow guide plate.

[0017] In an alternative embodiment, the flow guide plate is fixed in the silo body through an adjustable support, which is suitable for adjusting the angle and height according to the height of the material and the airflow requirement.

[0018] Beneficial effects: The adjustable support can be adjusted in real time according to the airflow requirement, improving the control efficiency of the dew point in the silo, and the adjustable support facilitates the disassembly and replacement of the flow guide plate, reducing the maintenance cost.

[0019] In an alternative embodiment, the surface of the flow guide plate is provided with a plurality of flow guide holes.

[0020] Beneficial effects: the flow guide holes can balance the airflow, the holes can guide the airflow to disperse, avoid the phenomenon of deflection, part of the airflow can be released through the flow guide holes, and part of the attached dust can be carried away, thereby reducing the maintenance frequency.

[0021] In an alternative embodiment, a sealing device is arranged between the flow guide plate and the inner wall of the silo body.

[0022] Beneficial effects: the sealing device can effectively block the overflow of the airflow, maintain the stability of the system airflow, improve the work efficiency, reduce the mixing of external air, and avoid the moisture or oxidation of the material.

[0023] In an alternative embodiment, the material guiding part is provided with a wear-resistant layer.

[0024] Beneficial effects: the wear-resistant layer can reduce the friction loss of the material and the inside of the material guiding part.

[0025] In an alternative embodiment, the flow guide plates are symmetrically arranged inside the silo body.

[0026] Beneficial effects: the symmetric arrangement of the flow guide plates can symmetrically arrange and uniformly disperse the airflow, optimize the flow mode inside the overall silo, and improve the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 Figure 1 is a schematic view of the silo structure of the present application.

[0029] Explanation of reference signs:

[0030] 1, silo body; 11, air outlet; 12, material guiding part; 13, material storage part; 14, air inlet; 2, compressed air flow meter; 3, digital display dew point instrument; 4, flow controller; 5, flow guide plate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.

[0035] In the production process of lithium ion battery positive electrode material, a plurality of buffer bins are usually arranged between different processes for temporary storage and buffering of material flow. However, these positive electrode materials generally have strong hygroscopic properties, especially high-nickel materials (such as lithium nickel cobalt manganese oxide NCM811, lithium nickel cobalt aluminum oxide NCA, etc.), with the increase of nickel content, the surface activity is enhanced, and it is more sensitive to moisture, and it is easy to absorb the moisture in the environment and react chemically, resulting in the formation of lithium salt residues (such as LiOH, LiCO) on the surface of the material, and then affecting the electrochemical performance and safety of the battery. Therefore, the dew point in the buffer bin must be strictly controlled to ensure that the moisture content of the material meets the process standard.

[0036] At present, the industry generally adopts the method of directly introducing compressed air into the silo to reduce the dew point, but this method has several key problems: unreasonable air flow organization, compressed air is usually injected into the silo through a single inlet, lack of scientific air flow guiding design, leading to disordered air flow, unable to form a stable and uniform inert gas protection layer, and there may still be high humidity clusters in some areas, affecting the overall humidity control effect. Low dew point adjustment efficiency, due to the dependence on free diffusion of gas rather than forced convection, slow humidity discharge speed, delayed dew point drop, difficult to quickly respond to production rhythm changes, especially when storing high-nickel materials, unable to meet the strict low dew point requirement. Lack of real-time monitoring and closed-loop control, most silos do not integrate online dew point sensors or humidity monitoring systems, relying only on manual sampling or offline analysis, leading to dew point data lag, unable to provide real-time feedback and adjust air flow, pressure and other parameters, poor process controllability. Energy consumption and cost problems, continuous introduction of compressed air can maintain a certain dew point, but non-optimized air flow path will result in low gas utilization, causing energy waste and increasing production cost. The utility model provides a kind of silo structure to solve the problem of realizing adjustable dew point in silo.

[0037] The embodiments of the utility model are described below in combination with Figure 1 , the embodiments of the utility model.

[0038] According to the embodiments of the utility model, a kind of silo structure is provided, comprising:

[0039] Silo body 1, including storage part 13 and guide material part 12, guide material part 12 is enclosed and arranged in the opposite lower of storage part 13, guide material part 12 is conical structure;The wall surface of silo body 1 is at least partially formed with air inlet 14;

[0040] Deflector 5 is arranged inside silo body 1, one end of deflector 5 is connected with silo body 1, the other end extends towards the inside of silo body 1, the area between deflector 5 and guide material part 12 is enclosed to form flared cavity, flared cavity is communicated with air inlet 14, flared cavity is in expansion state along the extension direction of guide wall.

[0041] Conical guide material part 12 structure naturally guides material to concentrate downward, reduces accumulation dead angle;Flared cavity cooperates with the air flow introduced by air inlet 14, and the air flow direction in silo body 1 can be adjusted. The air flow introduced by air inlet 14 diffuses through flared cavity, so as to efficiently and accurately control the dew point in silo. The extension length and angle of deflector 5 are adjustable, which can optimize air flow distribution according to different material characteristics, and the part area through type air inlet 14 design meets the multi-point air inlet demand while ensuring the structural strength. The integrated structure of conical guide material part 12 and flared cavity reduces complex internal components, reduces manufacturing cost and is convenient to install and maintain. Through the cooperation of storage part 13, guide material part 12 and deflector 5, the moisture demand in silo body 1 is realized, and the dew point in silo is controlled.

[0042] In some embodiments, in combination with Figure 1 As shown, the air inlet 14 is arranged between the material storage part 13 and the material guiding part 12. The air inlet 14 is arranged between the material storage part 13 and the material guiding part 12, so that the position of the gas entering is matched with the flow guide plate 5 and the material guiding part 12, thereby enhancing the diffusion degree of the gas.

[0043] Further, the air inlet 14 is also provided with a compressed air flow meter 2, which can monitor the flow of compressed air in real time. By monitoring the flow in real time, it can ensure that the compressed air enters the silo at a stable and appropriate rate, avoid too low flow (slowly reduce the dew point) or too high flow (waste energy or material dust), and improve the accuracy and response speed of the dew point adjustment. In the silo with multiple air inlets, the flow meter can help balance the gas distribution of each pipeline, prevent local airflow from being insufficient or too strong, ensure that the humidity in the entire silo is uniformly reduced, and avoid the "dead angle" area (moisture accumulation) caused by uneven airflow distribution, which affects the material consistency.

[0044] In some embodiments, in combination with Figure 1 As shown, the angle between the flow guide plate 5 and the material guiding part 12 is an acute angle, and the flow guide plate 5 is arranged downwardly. The angle between the flow guide plate 5 and the material guiding part 12 is an acute angle, and the flow guide plate 5 is arranged downwardly, which can control the speed of the airflow, and by adjusting the direction of the flow guide plate 5, different air inlet requirements can be met. The flow guide plate 5 is symmetrically arranged inside the silo body 1, and the symmetrical arrangement of the flow guide plate 5 can symmetrically arrange and uniformly disperse the airflow, optimize the flow pattern inside the overall silo, and improve the working efficiency.

[0045] Further, the flow guide plate 5 is fixed in the silo body 1 through an adjustable support, which is suitable for adjusting the angle and height according to the height of the material and the airflow demand. The adjustable support can be adjusted in real time according to the airflow demand, which improves the control efficiency of the dew point in the silo, and the adjustable support also facilitates the disassembly and replacement of the flow guide plate 5, thereby reducing the maintenance cost.

[0046] Further, the shape of the flow guide plate 5 can be arc-shaped, and the arc-shaped convex surface of the flow guide plate 5 is arranged close to the material guiding part 12. The arc-shaped flow guide plate 5 can smoothly guide the airflow, avoiding the airflow direction disorder caused by irregular plate surface, thereby reducing the flow guiding effect of the flow guide plate 5.

[0047] As a realizable form, the surface of the flow guide plate 5 is provided with a plurality of flow guide holes. The flow guide holes can balance the airflow, the holes can guide the airflow to flow dispersedly, avoid the airflow deviation, part of the airflow is released through the flow guide holes, which can carry away part of the attached dust, and reduce the maintenance frequency.

[0048] In some embodiments, in combination with Figure 1As shown, the silo body 1 is provided with an air outlet 11 arranged at the top of the silo body 1. By using the principle of air rising, the top air outlet 11 can quickly discharge the accumulated air and water vapor in the silo, reduce gas retention, and adjust the dew point in the silo.

[0049] In some embodiments, a sealing device is arranged between the guide plate 5 and the inner wall of the silo body 1. The sealing device can effectively block the overflow of air flow, maintain stable air flow in the system, improve work efficiency, reduce the mixing of external air, and avoid moisture or oxidation of the material. The material guiding part 12 is provided with a wear-resistant layer, which can reduce the friction loss of the material and the inner part of the material guiding part 12.

[0050] Specifically, the silo structure is also provided with a digital dew point meter 3 and a flow controller 4. The digital dew point meter 3 displays the dew point value in the silo in real time, replaces the traditional manual sampling or offline analysis, and eliminates data hysteresis. The flow controller 4 dynamically adjusts the flow of compressed air according to the dew point data, ensures that the dew point is always within the set range, and avoids excessive moisture absorption of the material. The flow controller 4 can be designed with multiple air inlets and outlets, and by adjusting the flow of each pipeline, it can ensure uniform distribution of the gas in the silo and eliminate humidity dead angles. Compared with the traditional free diffusion mode, the directional air flow + flow control can quickly reduce the dew point and improve the production efficiency.

[0051] Obviously, the above embodiments are only examples for clarity and do not limit the embodiments. Although the embodiments of the present application are described in conjunction with the drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application. Such modifications and variations fall within the scope of the present application.

Claims

1. A silo structure, characterized by The utility model relates to a material bin, which comprises a material bin body (1) and a guide plate (5). The material bin body (1) comprises a material storage part (13) and a material guide part (12), the material guide part (12) is arranged in the lower part of the material storage part (13) and is in a conical structure, and the wall surface of the material bin body (1) is provided with an air inlet (14) in at least a partial region. The guide plate (5) is arranged in the material bin body (1) and is connected to the material bin body (1) at one end and extends towards the inside of the material bin body (1) at the other end, a flared cavity is formed between the guide plate (5) and the material guide part (12), the flared cavity is connected to the air inlet (14), and the flared cavity is in an expanded state along the extension direction of the material guide part (12).

2. The stock bin structure of claim 1, wherein, The air inlet (14) is arranged between the material storage part (13) and the material guide part (12).

3. The stock bin structure of claim 1, wherein, The included angle between the guide plate (5) and the material guide part (12) is an acute angle, and the guide plate (5) is arranged in an inclined downward manner.

4. The stock bin structure of claim 1, wherein, The material bin body (1) is provided with an air outlet (11) arranged at the top of the material bin body (1).

5. The stock bin structure according to any one of claims 1 to 4, characterized in that, The guide plate (5) is in an arc shape, and the arc convex surface of the guide plate (5) is arranged close to the material guide part (12).

6. The stock bin structure according to any one of claims 1 to 4, characterized in that, The guide plate (5) is fixed in the material bin body (1) through an adjustable support, and the angle and height of the guide plate (5) can be adjusted according to the height of the material and the air flow demand.

7. The stock bin structure according to any one of claims 1 to 4, characterized in that, The surface of the guide plate (5) is provided with a plurality of guide holes.

8. The stock bin structure according to any one of claims 1 to 4, characterized in that, A sealing device is arranged between the guide plate (5) and the inner wall of the material bin body (1).

9. The stock bin structure according to any one of claims 1 to 4, characterized in that, The material guide part (12) is provided with a wear-resistant layer.

10. The stock bin structure according to any one of claims 1 to 4, characterized in that The guide plate (5) is symmetrically arranged in the material bin body (1).

Images