Precursor slurry preparation device

Abstract

The utility model discloses a precursor slurry preparation device and relates to the technical field of precursor slurry production equipment. The precursor slurry preparation device comprises a controller, a reaction kettle, a feeding pipeline and an air inlet pipeline, the feeding pipeline and the air inlet pipeline are communicated with the reaction kettle, an image collector is arranged in the reaction kettle, the image collector is used for obtaining color images of slurry in the reaction kettle in real time, and a flow meter is arranged on the air inlet pipeline. The controller is electrically connected with the image collector and the flow meter, and the controller is used for extracting real-time color information of the slurry through the color image and controlling the working state of the flow meter according to the real-time color information. The precursor slurry preparation device can perform real-time observation and automatic regulation and control on the preparation process of the precursor slurry, solves the problems of quality deviation and low production efficiency of the slurry caused by manual sampling, photographing and analysis in the prior art, and improves the production efficiency and accuracy of the preparation process; and the requirement on stability of the preparation process is met.

Description

Technical Field

[0001] The utility model relates to the technical field of precursor slurry production equipment, in particular to a precursor slurry preparation device. Background Art

[0002] In the synthesis process of positive electrode precursor materials for new energy batteries, in order to repeat the process, it is necessary to monitor the color and oxidation degree of the slurry during the synthesis process at a fixed frequency. The conventional method is to take a picture of the slurry and observe it in combination with measuring the oxygen content in the reactor. The comparison of color and oxygen content is to achieve the same oxidation degree of the material as the reference process. In terms of precursor materials, the degree of oxidation is usually adjusted to change the thickness and shape of the primary particles and the agglomeration mode of the secondary particles, thereby changing their physical and chemical properties and the electrical properties of the positive electrode after sintering. At present, the industry requires personnel analysis and control based on experience. The method is time-consuming and there are individual differences in judgment, which causes deviations in the final synthetic materials. Utility Model Content

[0003] The purpose of the present utility model is to provide a precursor slurry preparation device, which can observe and automatically control the preparation process of the precursor slurry in real time, solve the problems of quality deviation and low production efficiency of the slurry caused by manual sampling, photographing and analysis in the existing technology, improve the production efficiency and accuracy of the preparation process, and meet the stability requirements of the preparation process.

[0004] The embodiment of the present utility model is achieved as follows:

[0005] The present invention provides a precursor slurry preparation device, comprising a controller, a reactor, and a feed pipe and an air intake pipe connected to the reactor. The reactor is provided with an image collector for acquiring a real-time color image of the slurry in the reactor. The air intake pipe is provided with a flow meter. The controller is electrically connected to the image collector and the flow meter, respectively, and is configured to extract real-time color information of the slurry through the color image and control the working state of the flow meter based on the real-time color information. The precursor slurry preparation device can observe and automatically control the precursor slurry preparation process in real time, solving the problems of slurry quality deviation and low production efficiency caused by manual sampling, photography, and analysis in the prior art, improving the production efficiency and accuracy of the preparation process, and meeting the requirements for stability of the preparation process.

[0006] Optionally, preset color information is provided in the controller, and the controller is used to control the working state of the flow meter according to a comparison result between the preset color information and the real-time color information.

[0007] Optionally, a preset time interval is set in the controller, and the controller is used to control the image collector to obtain a color image of the slurry in the reactor in real time according to the preset time interval.

[0008] Optionally, a signal receiving module is provided in the controller, and the signal receiving module is used to receive a control instruction issued by the controller according to the comparison result and transmit the control instruction to the flow meter.

[0009] Optionally, the air inlet pipe includes a main pipe and a first branch pipe and a second branch pipe respectively connected to the main pipe, the main pipe extends below the liquid level of the slurry in the reactor, the first branch pipe and the second branch pipe are used to introduce nitrogen and air, respectively, and the number of the flow meters is two, and the two flow meters are respectively arranged on the first branch pipe and the second branch pipe.

[0010] Optionally, a stirring rod is provided in the reactor, and the stirring rod extends below the liquid surface of the slurry.

[0011] Optionally, a lighting unit is provided on at least one of the reaction kettle, the stirring rod and the image collector.

[0012] Optionally, a driving member is further included, and one end of the stirring rod away from the slurry extends out of the reactor and is transmission-connected to the driving member, and the driving member is used to drive the stirring rod to rotate relative to the reactor.

[0013] Optionally, a stirring paddle is provided at one end of the stirring rod extending below the liquid surface of the slurry in a direction perpendicular to the stirring rod.

[0014] Optionally, the feed pipeline includes a first sub-pipeline, a second sub-pipeline and a third sub-pipeline that are independent of each other, and the first sub-pipeline, the second sub-pipeline and the third sub-pipeline are used to introduce molten metal, liquid alkali and ammonia water respectively.

[0015] The beneficial effects of the embodiments of the present utility model include:

[0016] The precursor slurry preparation device includes a controller, a reactor, and a feed pipe and an air inlet pipe connected to the reactor, so that the reaction raw materials are introduced into the reactor through the feed pipe, the reaction gas is introduced into the reactor through the air inlet pipe, and the reactor is used as a reaction vessel for the chemical reaction, so that the reaction raw materials and the reaction gas can undergo an oxidation reaction in the reactor, thereby producing the precursor slurry through the oxidation reaction. On this basis, an image collector is provided in the reactor, and the image collector is used to obtain a color image of the slurry in the reactor in real time. A flow meter is provided on the air inlet pipe. The controller is electrically connected to the image collector and the flow meter respectively. The controller is used to extract real-time color information of the slurry through the color image and control the working state of the flow meter (including whether it is turned on and the specific degree of turning on) according to the real-time color information, thereby changing the level of oxidation of the reaction gas on the reaction raw materials. Compared with the existing technology that causes quality deviation and low production efficiency of slurry through manual sampling, photographing and analysis, in this application, on the basis of the original reactor, feed pipe and air intake pipe, by adding a controller, image collector and flow meter, the image collector can be used to obtain color images of the slurry in a timely and real-time manner, and the controller can perform unified standard analysis, judgment and regulation, and then the flow meter can perform precise execution according to the control instructions of the controller, thereby solving the problems of quality deviation and low production efficiency of slurry caused by manual sampling, photographing and analysis in the existing technology, improving the production efficiency and accuracy of the preparation process, and meeting the stability requirements of the preparation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of a precursor slurry preparation device provided in an embodiment of the present invention;

[0019] Figure 2 A control schematic diagram of a precursor slurry preparation device provided in an embodiment of the present invention.

[0020] Icons: 100-precursor slurry preparation device; 10-controller; 11-signal receiving module; 20-reactor; 21-image collector; 22-stirring rod; 23-stirring paddle; 24-overflow port; 30-feed pipe; 31-first sub-pipe; 32-second sub-pipe; 33-third sub-pipe; 40-air inlet pipe; 41-main pipe; 42-first branch pipe; 43-second branch pipe; 50-flow meter; 60-driving part. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0026] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections, indirect connections through an intermediate medium, or connections within two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] During the precursor material manufacturing process, to ensure that the oxidation parameters of the materials in the reactor remain within the process requirements in a timely and effective manner, it is necessary to constantly observe the color of the materials. Different levels of oxidation will result in different colors. In current routine operations, inspectors manually take samples at regular intervals, then photograph the material's color and compare it to a reference color to analyze whether it has deviated from the process range. This method requires high-level photography and analysis skills, making it impossible to achieve uniform standards, which seriously affects the stability of production quality.

[0028] To solve the above problems, please refer to Figure 1 and Figure 2 The present embodiment provides a precursor slurry preparation device 100, comprising a controller 10, a reactor 20, and a feed pipe 30 and an air intake pipe 40 connected to the reactor 20. The reactor 20 is provided with an image collector 21 for acquiring a real-time color image of the slurry in the reactor 20. The air intake pipe 40 is provided with a flow meter 50. The controller 10 is electrically connected to the image collector 21 and the flow meter 50, respectively. The controller 10 is configured to extract real-time color information of the slurry from the color image and control the operating state of the flow meter 50 based on the real-time color information. The precursor slurry preparation device 100 enables real-time observation and automatic control of the precursor slurry preparation process, solving the problems of slurry quality deviation and low production efficiency caused by manual sampling, photography, and analysis in the prior art. It improves the production efficiency and accuracy of the preparation process and meets the requirements for stability of the preparation process.

[0029] It should be noted that if Figure 1 As shown, in this embodiment, the precursor slurry preparation device 100 includes a reactor 20 and a feed pipe 30 and an air inlet pipe 40 respectively connected to the reactor 20, so that the reaction raw materials are introduced into the reactor 20 through the feed pipe 30, and the reaction gas is introduced into the reactor 20 through the air inlet pipe 40, and the reactor 20 is used as a reaction container for a chemical reaction, so that the reaction raw materials and the reaction gas can undergo an oxidation reaction in the reactor 20, thereby producing a precursor slurry through the oxidation reaction.

[0030] On this basis, if Figure 1 As shown, in this embodiment, the precursor slurry preparation device 100 also includes a controller 10 (such as a computer) and an image collector 21 (such as a high-definition camera) and a flow meter 50 quantity switch (referred to as flow meter 50) electrically connected to the controller 10, wherein the image collector 21 is arranged in the reactor 20 to obtain a color image of the slurry in the reactor 20 in real time through the image collector 21, and the flow meter 50 is arranged on the air intake pipe 40 to control the actual air intake volume of the air intake pipe 40 through the flow meter 50.

[0031] In the actual production process, as the intake amount of the reaction gas introduced into the air intake pipe 40 is different, the color of the slurry prepared in the reactor 20 will also be different, which means that the degree of oxidation of the reaction raw materials in the reactor 20 is different. In order to monitor the oxidation degree of the reaction raw materials in real time, in this application, the image collector 21 is used to obtain a color image of the slurry in the reactor 20 in real time. The controller 10 extracts the real-time color information of the slurry through these color images and can adjust and control the working state of the flow meter 50 (including whether it is turned on and the specific degree of turning on) according to this real-time color information, thereby changing the level of oxidation of the reaction gas on the reaction raw materials.

[0032] Compared with the problems of quality deviation and low production efficiency of slurry caused by manual sampling, photographing and analysis in the prior art, in the present application, on the basis of the original reactor 20, feed pipe 30 and air intake pipe 40, by adding a controller 10, an image collector 21 and a flow meter 50, the image collector 21 can be used to obtain a color image of the slurry in a timely and real-time manner, and the controller 10 can perform unified standard analysis, judgment and regulation, and then the flow meter 50 can perform precise execution according to the control instructions of the controller 10, thereby solving the problems of quality deviation and low production efficiency of slurry caused by manual sampling, photographing and analysis in the prior art, improving the production efficiency and accuracy of the preparation process, and meeting the stability requirements of the preparation process.

[0033] In this embodiment, the controller 10 is provided with preset color information (i.e., reference color information). The controller 10 is configured to control the operating state of the flow meter 50 based on a comparison result between the preset color information and the real-time color information. For example, in some embodiments, the color information may be positively correlated with the degree of oxidation. In other words, when the controller 10 determines that the real-time color information is darker than the preset color information, it means that the real-time degree of oxidation is higher than the preset degree of oxidation, and the controller 10 may control the flow meter 50 accordingly based on this comparison result. When the controller 10 determines that the real-time color information is lighter than the preset color information, it means that the real-time degree of oxidation is lower than the preset degree of oxidation, and the controller 10 may control the flow meter 50 accordingly based on this comparison result. Of course, in other embodiments, the color information may be negatively correlated with the degree of oxidation. In other words, when the controller 10 determines that the real-time color information is darker than the preset color information, it means that the real-time degree of oxidation is lower than the preset degree of oxidation, and the controller 10 may control the flow meter 50 accordingly based on this comparison result. When the controller 10 determines that the real-time color information is lighter than the preset color information, it means that the real-time degree of oxidation is higher than the preset degree of oxidation, and the controller 10 may control the flow meter 50 accordingly based on this comparison result. Those skilled in the art should be able to make reasonable selections and designs based on actual conditions, and no specific limitations are imposed here.

[0034] In this embodiment, a preset time interval is set within the controller 10. The controller 10 is configured to control the image collector 21 to acquire a real-time color image of the slurry within the reactor 20 according to the preset time interval. For example, the preset time interval is 10 minutes, 20 minutes, 30 minutes, or 60 minutes. In this way, the controller 10 can control the image collector 21 to acquire a color image of the slurry within the reactor 20 once every preset time interval, eliminating the need to control the image collector 21 to continuously acquire a color image of the slurry within the reactor 20. This saves power required for the image collector 21 to operate and conserves storage resources within the controller 10 for color images and real-time color information.

[0035] like Figure 1As shown, in this embodiment, a signal receiving module 11 is provided in the controller 10. The signal receiving module 11 is used to receive a control instruction issued by the controller 10 based on the comparison result and transmit the control instruction to the flow meter 50. For example, in some embodiments, the color information may be positively correlated with the degree of oxidation. In other words, when the controller 10 determines that the real-time color information is darker than the preset color information, it means that the real-time oxidation degree is higher than the preset oxidation degree. The controller 10 can send this comparison result to the signal receiving module 11 and transmit the control instruction to the flow meter 50 through the signal receiving module 11 for corresponding adjustment. When the controller 10 determines that the real-time color information is lighter than the preset color information, it means that the real-time oxidation degree is lower than the preset oxidation degree. The controller 10 can send this comparison result to the signal receiving module 11 and transmit the control instruction to the flow meter 50 through the signal receiving module 11 for corresponding adjustment. Of course, in other embodiments, the color information may be negatively correlated with the degree of oxidation. In other words, when the controller 10 determines that the real-time color information is darker than the preset color information, it means that the real-time degree of oxidation is lower than the preset degree of oxidation. The controller 10 may send this comparison result to the signal receiving module 11, and transmit the control instruction to the flow meter 50 through the signal receiving module 11 for corresponding adjustment. When the controller 10 determines that the real-time color information is lighter than the preset color information, it means that the real-time degree of oxidation is higher than the preset degree of oxidation. The controller 10 may send this comparison result to the signal receiving module 11, and transmit the control instruction to the flow meter 50 through the signal receiving module 11 for corresponding adjustment. Those skilled in the art should be able to make reasonable choices and designs based on actual conditions, and no specific limitations are imposed here.

[0036] like Figure 1 As shown, in this embodiment, the air inlet pipe 40 includes a main pipe 41 and a first branch pipe 42 and a second branch pipe 43 respectively connected to the main pipe 41. The main pipe 41 extends below the liquid level of the slurry in the reactor 20. The first branch pipe 42 and the second branch pipe 43 are used to introduce nitrogen and air, respectively. There are two flow meters 50, and the two flow meters 50 are respectively arranged on the first branch pipe 42 and the second branch pipe 43.

[0037] For example, in some embodiments, the color information may be positively correlated with the degree of oxidation. In other words, when the controller 10 determines that the real-time color information is darker than the preset color information, it means that the real-time degree of oxidation is higher than the preset degree of oxidation. The controller 10 may control the flow meter 50 provided on the first branch pipe 42 to open wider and the flow meter 50 provided on the second branch pipe 43 to open smaller according to the comparison result, so as to increase the nitrogen flow rate and reduce the air flow rate accordingly; when the controller 10 determines that the real-time color information is lighter than the preset color information, it means that the real-time degree of oxidation is lower than the preset degree of oxidation. The controller 10 may control the flow meter 50 provided on the first branch pipe 42 to open smaller and the flow meter 50 provided on the second branch pipe 43 to open larger according to the comparison result, so as to reduce the nitrogen flow rate and increase the air flow rate accordingly.

[0038] Of course, in other embodiments, the color information may be negatively correlated with the degree of oxidation. In other words, when the controller 10 determines that the real-time color information is darker than the preset color information, it means that the real-time degree of oxidation is lower than the preset degree of oxidation. Based on this comparison result, the controller 10 may control the flow meter 50 provided on the first branch pipe 42 to open more and the flow meter 50 provided on the second branch pipe 43 to open more, thereby correspondingly reducing the nitrogen flow rate and increasing the air flow rate. When the controller 10 determines that the real-time color information is lighter than the preset color information, it means that the real-time degree of oxidation is higher than the preset degree of oxidation. Based on this comparison result, the controller 10 may control the flow meter 50 provided on the first branch pipe 42 to open more and the flow meter 50 provided on the second branch pipe 43 to open less, thereby correspondingly increasing the nitrogen flow rate and reducing the air flow rate. Those skilled in the art should be able to make reasonable choices and designs based on actual conditions, and no specific limitations are set here.

[0039] like Figure 1 As shown, in this embodiment, a stirring rod 22 is provided in the reactor 20 , and the stirring rod 22 extends below the liquid surface of the slurry to ensure that the reaction raw materials and the reaction gas can fully react under the stirring action of the stirring rod 22 .

[0040] In this embodiment, at least one of the reactor 20, the stirring rod 22 and the image collector 21 is provided with a lighting unit to illuminate the interior of the reactor 20, thereby facilitating the image collector 21 to obtain a color image of the slurry in real time.

[0041] like Figure 1 As shown, in this embodiment, the precursor slurry preparation device 100 further includes a driving member 60. The end of the stirring rod 22 away from the slurry extends out of the reactor 20 and is in transmission connection with the driving member 60. The driving member 60 is used to drive the stirring rod 22 to rotate relative to the reactor 20. For example, the driving member 60 can be a motor.

[0042] like Figure 1 As shown, in this embodiment, a stirring paddle 23 is provided at one end of the stirring rod 22 extending below the liquid surface of the slurry in a direction perpendicular to the stirring rod 22, so as to further enhance the stirring effect through the stirring paddle 23, thereby ensuring that the reaction raw materials and the reaction gas can fully react.

[0043] like Figure 1 As shown, in this embodiment, the feed pipe 30 includes a first sub-pipeline 31, a second sub-pipeline 32, and a third sub-pipeline 33, which are independent of each other. The first sub-pipeline 31, the second sub-pipeline 32, and the third sub-pipeline 33 are respectively used to introduce molten metal, liquid caustic soda, and aqueous ammonia to ensure the normal progress of the preparation reaction. Based on this, those skilled in the art should be able to add other sub-pipelines according to actual conditions to correspondingly introduce other reaction raw materials required in the preparation process, which will not be described in detail here.

[0044] In addition, if Figure 1 As shown, in this embodiment, the reactor 20 is provided with an overflow port 24 so that when there is too much slurry, it can flow out of the reactor 20 through the overflow port 24, thereby preventing the gas pressure in the reactor 20 from being too high and affecting the safe progress of the reaction.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0046] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A precursor slurry preparation device, characterized in that: The invention comprises a controller, a reactor, and a feed pipe and an air intake pipe connected to the reactor. The reactor is provided with an image collector, which is used to obtain a color image of the slurry in the reactor in real time. The air intake pipe is provided with a flow meter. The controller is electrically connected to the image collector and the flow meter respectively. The controller is used to extract real-time color information of the slurry through the color image and control the working state of the flow meter according to the real-time color information.

2. The precursor slurry preparation device according to claim 1, characterized in that: Preset color information is set in the controller, and the controller is used to control the working state of the flow meter according to the comparison result of the preset color information and the real-time color information.

3. The precursor slurry preparation device according to claim 1, characterized in that: A preset time interval is set in the controller, and the controller is used to control the image collector to obtain a color image of the slurry in the reactor in real time according to the preset time interval.

4. The precursor slurry preparation device according to claim 2, characterized in that: The controller is provided with a signal receiving module, and the signal receiving module is used to receive a control instruction issued by the controller according to the comparison result and transmit the control instruction to the flow meter.

5. The precursor slurry preparation device according to claim 1, characterized in that: The air inlet pipe includes a main pipe and a first branch pipe and a second branch pipe respectively connected to the main pipe. The main pipe extends below the liquid level of the slurry in the reactor. The first branch pipe and the second branch pipe are used to introduce nitrogen and air, respectively. There are two flow meters, and the two flow meters are respectively arranged on the first branch pipe and the second branch pipe.

6. The precursor slurry preparation device according to claim 1, characterized in that: A stirring rod is provided in the reactor, and the stirring rod extends below the liquid level of the slurry.

7. The precursor slurry preparation device according to claim 6, characterized in that: At least one of the reaction kettle, the stirring rod and the image collector is provided with a lighting unit.

8. The precursor slurry preparation device according to claim 6, characterized in that: It also includes a driving member, wherein one end of the stirring rod away from the slurry extends out of the reactor and is transmission-connected to the driving member, and the driving member is used to drive the stirring rod to rotate relative to the reactor.

9. The precursor slurry preparation device according to claim 6, characterized in that: A stirring paddle is provided on one end of the stirring rod extending below the liquid surface of the slurry in a direction perpendicular to the stirring rod.

10. The precursor slurry preparation device according to claim 1, characterized in that: The feed pipeline includes a first sub-pipeline, a second sub-pipeline and a third sub-pipeline which are independent of each other. The first sub-pipeline, the second sub-pipeline and the third sub-pipeline are used for introducing molten metal, liquid alkali and ammonia water respectively.

Images