Slurry supply device

Abstract

The utility model relates to a slurry supply device which comprises a slurry supply unit which comprises a storage tank and a finished product tank, a slurry conveying pipeline is connected between the storage tank and the finished product tank, and a first control valve is connected to the slurry conveying pipeline; the slurry detection unit comprises a waste liquid tank, the waste liquid tank is provided with a slurry detection pipeline and a waste liquid discharge pipeline which are communicated with the slurry conveying pipeline, and the slurry detection pipeline is connected with a detection device for detecting the solid content of slurry. When the pipeline is pushed, slurry in the slurry conveying pipeline enters the slurry detection pipeline and the waste liquid discharging pipeline and then enters the waste liquid tank, the solid content of the slurry is gradually increased, the density of the slurry is gradually increased, the gravity of the slurry is increased, the slurry is finally sensed by the detection device for detecting the solid content of the slurry, and detection of the solid content of the slurry is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery manufacturing, and in particular to a slurry supply device. BACKGROUND

[0002] In the process of slurry homogenization in battery manufacturing, the slurry is transported to the coating process through a pipeline. During the process of changing the type and stopping the line, the pipeline is filled with solvent or deionized water.

[0003] When the pipeline is pushed with slurry after the normal production is resumed, the slurry and the solvent are mixed, which results in low solid content and low viscosity of the slurry, thereby affecting the coating process. Therefore, the solid content of the slurry in the pipeline needs to be detected when the pipeline is pushed. SUMMARY

[0004] Embodiments of the present application provide a slurry supply device to solve the problem that it is difficult to detect the solid content of the slurry in the pipeline when the pipeline is pushed in the related art.

[0005] Embodiments of the present application provide a slurry supply device, which comprises:

[0006] A slurry supply unit, which comprises a storage tank and a finished product tank, and a slurry conveying pipeline connected between the storage tank and the finished product tank, and a first control valve connected to the slurry conveying pipeline.

[0007] A slurry detection unit, which comprises a waste liquid tank, a slurry detection pipeline and a waste liquid discharge pipeline connected to the slurry conveying pipeline, and a detection device for detecting the solid content of the slurry connected to the slurry detection pipeline.

[0008] In some embodiments: the feed inlet of the slurry detection pipeline and the waste liquid discharge pipeline is located upstream of the first control valve, a second control valve is connected to the waste liquid discharge pipeline, and the discharge outlet of the slurry detection pipeline is in communication with the waste liquid discharge pipeline and located downstream of the second control valve.

[0009] In some embodiments: the slurry detection pipeline comprises a vertical pipeline and a horizontal pipeline in communication with each other, the feed inlet of the vertical pipeline is in communication with the slurry conveying pipeline, and the discharge outlet of the vertical pipeline is in communication with the horizontal pipeline.

[0010] The detection device is located at the discharge outlet of the vertical pipeline, and the detection device comprises a spring support in sliding sealing connection with the vertical pipeline, a compression spring elastically supporting the spring support, and a proximity sensor detecting the stroke height of the spring support.

[0011] In some embodiments: the detection device further comprises a pre-tightening screw threadedly connected with the vertical pipeline, for adjusting the movement direction of the compression spring towards or away from the proximity sensor, the compression spring is located between the spring support and the pre-tightening screw, and the proximity sensor is fixed on the vertical pipeline.

[0012] In some embodiments: a third control valve is connected with the vertical pipeline, a fourth control valve is connected with the horizontal pipeline, the detection device is located between the third control valve and the fourth control valve, and the first control valve, the third control valve, the fourth control valve and the proximity sensor are all connected with a controller.

[0013] In some embodiments: a limiting ring for limiting the spring support is arranged in the vertical pipeline, the limiting ring is located above the spring support, and the spring support abuts against the limiting ring when in a free state.

[0014] In some embodiments: the spring support comprises a sealing plate in sliding sealing connection with the vertical pipeline, and a guide rod fixedly connected with the sealing plate, the guide rod is coaxially arranged with the sealing plate, the side wall of the sealing plate is a tapered surface, and the diameter of the tapered surface gradually increases away from the guide rod.

[0015] In some embodiments: a stirring paddle is arranged in the storage tank, a heater and a temperature sensor are arranged in the storage tank, and a screw pump is connected with the slurry conveying pipeline.

[0016] In some embodiments: a push ball inlet and a push ball outlet are arranged on the slurry conveying pipeline, the push ball inlet is located at one end close to the storage tank, and the push ball outlet is located at one end close to the finished product tank.

[0017] In some embodiments: manual valves are arranged on the slurry conveying pipeline, for opening or closing the push ball inlet and the push ball outlet, respectively.

[0018] The technical scheme provided in the application has the beneficial effects of:

[0019] The slurry supply device provided in the application has the following beneficial effects: the slurry supply device is provided with a slurry supply unit, the slurry supply unit comprises a storage tank and a finished product tank, a slurry conveying pipeline is connected between the storage tank and the finished product tank, and a first control valve is connected with the slurry conveying pipeline; the slurry supply device is further provided with a slurry detection unit, the slurry detection unit comprises a waste liquid tank, a slurry detection pipeline and a waste liquid discharge pipeline are arranged on the waste liquid tank and communicate with the slurry conveying pipeline, and a detection device for detecting the solid content of the slurry is connected with the slurry detection pipeline.

[0020] Therefore, the proposed slurry supply device adds a slurry detection unit to the slurry supply unit. This slurry detection unit includes a waste liquid tank, which is equipped with a slurry detection pipeline and a waste liquid discharge pipeline connected to the slurry delivery pipeline. A detection device for detecting the slurry solids content is connected to the slurry detection pipeline. When the pipeline is pushed, the slurry in the slurry delivery pipeline enters the slurry detection pipeline and the waste liquid discharge pipeline before entering the waste liquid tank. As the slurry solids content gradually increases, the density of the slurry also gradually increases, increasing gravity, and is eventually detected by the slurry solids content detection device, thus completing the slurry solids content detection. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the detection device according to an embodiment of this application.

[0024] Figure label:

[0025] 1. Storage tank; 2. Slurry conveying pipeline; 3. First control valve; 4. Second control valve; 5. Third control valve; 6. Fourth control valve; 7. Detection device; 8. Waste liquid tank; 9. Finished product tank; 10. Waste liquid discharge pipeline; 11. Vertical pipeline; 12. Horizontal pipeline; 13. Spring support; 14. Compression spring; 15. Preload bolt; 16. Proximity sensor; 17. Sealing plate; 18. Guide rod; 19. Conical surface. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] This application provides a slurry supply device that solves the problem in related technologies where it is difficult to detect the solid content of the slurry inside the pipe when pushing the pipe.

[0028] See Figure 1As shown, this application embodiment provides a slurry supply device, including:

[0029] The slurry supply unit includes a storage tank 1 and a finished product tank 9. A slurry delivery pipeline 2 connects the storage tank 1 and the finished product tank 9. A first control valve 3 is connected to the slurry delivery pipeline 2, which is used to disconnect or connect the storage tank 1 and the finished product tank 9. When the storage tank 1 is supplying slurry normally, the first control valve 3 is opened, and the slurry in the storage tank 1 flows through the slurry delivery pipeline 2 into the finished product tank 9.

[0030] The slurry testing unit includes a waste liquid tank 8. The waste liquid tank 8 is equipped with a slurry testing pipeline and a waste liquid discharge pipeline 10, both connected to the slurry delivery pipeline 2. A testing device 7 for detecting the solid content of the slurry is connected to the slurry testing pipeline. During the slurry changeover and line shutdown process in the storage tank 1, the slurry delivery pipeline 2 is filled with solvent or deionized water. To remove the solvent or deionized water and supply the changed slurry to the finished product tank 9, the slurry containing the mixed solvent or deionized water needs to be discharged into the waste liquid tank 8 through the waste liquid discharge pipeline 10.

[0031] However, during the process of discharging the slurry containing mixed solvent or deionized water into the waste liquid tank 8, it is necessary to detect whether the slurry containing mixed solvent or deionized water in the slurry delivery pipeline 2 has been completely emptied. At this time, this application utilizes a slurry detection pipeline and a detection device 7 to detect the solid content in the slurry. The detection principle is as follows: as the slurry containing mixed solvent or deionized water is gradually emptied, the solid content in the slurry will gradually increase, and the density of the slurry will gradually increase. The weight of the slurry located in the slurry detection pipeline will gradually increase while the volume remains unchanged. After the weight increases to a set value, it will be sensed by the detection device 7.

[0032] The slurry supply device in this embodiment adds a slurry detection unit to the slurry supply unit. This detection unit includes a waste liquid tank 8, which has a slurry detection pipeline and a waste liquid discharge pipeline 10 connected to the slurry delivery pipeline 2. A detection device 7 for detecting the slurry solids content is connected to the slurry detection pipeline. When the pipeline is pushed, the slurry in the slurry delivery pipeline 2 enters the slurry detection pipeline and the waste liquid discharge pipeline 10, and then enters the waste liquid tank 8. As the slurry solids content gradually increases, the density of the slurry also gradually increases, increasing gravity, and is eventually detected by the slurry solids content detection device 7, thus completing the slurry solids content detection.

[0033] In some alternative embodiments: see Figure 1As shown in the figure, this application embodiment provides a slurry supply device. The inlets of the slurry detection pipeline and the waste liquid discharge pipeline 10 of the slurry supply device are both located upstream of the first control valve 3. A second control valve 4 is connected to the waste liquid discharge pipeline 10, and the outlet of the slurry detection pipeline is connected to the waste liquid discharge pipeline 10 and located downstream of the second control valve 4.

[0034] In this embodiment, the inlets of the slurry detection pipeline and the waste liquid discharge pipeline 10 are both located upstream of the first control valve 3. When the first control valve 3 is closed, the slurry discharged from the storage tank 1 enters the slurry detection pipeline and the waste liquid discharge pipeline 10, respectively. The second control valve 4 located on the waste liquid discharge pipeline 10 is used to open or close the waste liquid discharge pipeline 10. When the second control valve 4 closes the waste liquid discharge pipeline 10, the slurry discharged from the storage tank 1 enters the slurry detection pipeline and is then discharged into the waste liquid tank 8.

[0035] In some alternative embodiments: see Figure 1 and Figure 2 As shown in the figure, this application embodiment provides a slurry supply device. The slurry detection pipeline of the slurry supply device includes a vertical pipeline 11 and a horizontal pipeline 12 that are interconnected. The inlet of the vertical pipeline 11 is connected to the slurry conveying pipeline 2, and the outlet of the vertical pipeline 11 is connected to the inlet of the horizontal pipeline 12.

[0036] The detection device 7 is located inside the outlet of the vertical pipe 11. The detection device 7 includes a spring support 13 that is slidably and sealingly connected to the vertical pipe 11, a compression spring 14 that elastically supports the spring support 13, and a proximity sensor 16 that detects the stroke height of the spring support 13. The slurry inside the vertical pipe 11 pushes the spring support 13 downward under its own weight, and the compression spring 14 located at the bottom of the spring support 13 has an elastic supporting force for the spring support 13.

[0037] As the solid content of the slurry in the vertical pipe 11 gradually increases, the density and weight of the slurry also increase. When the solid content of the slurry reaches the set value, the weight of the slurry overcomes the elastic support force of the compression spring 14 and pushes the spring support 13 downward to slide until the spring support 13 slides to the position of the proximity sensor 16 and is sensed by the proximity sensor 16. Then the proximity sensor 16 can send out a detection signal.

[0038] In some alternative embodiments: see Figure 2 As shown, this application embodiment provides a slurry supply device. The detection device 7 of the slurry supply device further includes a preload bolt 15 threadedly connected to the vertical pipe 11 for adjusting the movement of the compression spring 14 toward or away from the proximity sensor 16. The compression spring 14 is located between the spring support 13 and the preload bolt 15, and the proximity sensor 16 is fixed to the vertical pipe 11.

[0039] This embodiment of the application includes a preload bolt 15 that is threadedly connected to the vertical pipe 11 and used to adjust the movement of the compression spring 14 toward or away from the proximity sensor 16. The preload bolt 15 is used to adjust the preload force of the compression spring 14, which is adjusted according to the different solid content of the slurry. The higher the solid content of the slurry, the greater the preload force of the compression spring 14 adjusted by the preload bolt 15, and vice versa.

[0040] In some alternative embodiments: see Figure 1 and Figure 2 As shown, this application embodiment provides a slurry supply device. A third control valve 5 is connected to the vertical pipeline 11 of the slurry supply device, and a fourth control valve 6 is connected to the horizontal pipeline 12. A detection device 7 is located between the third control valve 5 and the fourth control valve 6. The first control valve 3, the second control valve 4, the third control valve 5, the fourth control valve 6, and the proximity sensor 16 are all connected to a controller (not shown in the figure).

[0041] When pushing the pipeline, the controller closes the first control valve 3 and opens the second control valve 4. The slurry in the storage tank 1 is pumped into the slurry delivery pipeline 2. The slurry in the slurry delivery pipeline 2 enters the waste liquid discharge pipeline 10 and is discharged into the waste liquid tank 8, thereby emptying the slurry mixed with solvent or deionized water in the slurry delivery pipeline 2.

[0042] To detect as early as possible whether the slurry containing mixed solvent or deionized water in the slurry delivery pipeline 2 has been emptied, during the pipeline pushing process, the controller can control the third control valve 5, the fourth control valve 6, and the second control valve 4 to be in the first state. In the first state, when the third control valve 5 and the fourth control valve 6 are opened, the second control valve 4 is simultaneously closed. The controller can also control the third control valve 5, the fourth control valve 6, and the second control valve 4 to be in the second state. In the second state, when the controller controls the third control valve 5 and the fourth control valve 6 to be closed, the second control valve 4 is opened, thereby causing the slurry detection pipeline and the waste liquid discharge pipeline 10 to alternately empty the slurry containing mixed solvent or deionized water in the slurry delivery pipeline 2.

[0043] Specifically, during the pipeline pushing process, the controller can control the third control valve 5, the fourth control valve 6, and the second control valve 4 to switch between a first state and a second state. Specifically, the controller first controls the third control valve 5, the fourth control valve 6, and the second control valve 4 to be in the first state. At this time, the slurry containing mixed solvent or deionized water in the slurry delivery pipeline 2 flows into the slurry detection pipeline. Then, the controller controls the second control valve 4 to open, and when the third control valve 5 and the fourth control valve 6 are closed, the waste liquid discharge pipeline 10 is emptying the slurry containing mixed solvent or deionized water in the slurry delivery pipeline 2. At this time, both the third control valve 5 and the fourth control valve 6 are in the closed state, and the solid content of the slurry stored in the slurry detection pipeline is sensed by the detection device 7. Thus, the controller frequently switches the third control valve 5, the fourth control valve 6, and the second control valve 4 between the first state and the second state.

[0044] During the switching process between the first and second states, when the solid content in the slurry changes, as the slurry density gradually increases, the gravity increases. When the weight of the slurry exceeds the preload of the compression spring 14, the spring support 13 moves downward, and the signal of the proximity sensor 16 changes, thereby controlling the first control valve 3 to open and the second control valve 4, the third control valve 5, and the fourth control valve 6 to close, allowing the slurry to enter the finished product tank 9 for normal coating use.

[0045] In some alternative embodiments: see Figure 2 As shown in the figure, this application embodiment provides a slurry supply device. The vertical pipe 11 of the slurry supply device is provided with a limiting ring for a limiting spring support. The limiting ring is located above the spring support 13, and when the spring support 13 is in a free state, it abuts against the limiting ring. The limiting ring restricts the upward travel range of the spring support 13.

[0046] The spring support 13 includes a sealing plate 17 that is slidably and sealingly connected to the vertical pipe 11, and a guide rod 18 that is fixedly connected to the sealing plate 17. The guide rod 18 is coaxially arranged with the sealing plate 17. The sealing plate 17 has a disc structure, and its side wall is a conical surface 19. The diameter of the conical surface 19 gradually increases away from the guide rod 18. The conical surface 19 reduces the frictional resistance between the sealing plate 17 and the vertical pipe 11. The guide rod 18 is fitted into the compression spring 14, thereby providing motion guidance for the compression spring 14.

[0047] In some alternative embodiments: see Figures 1-2 As shown in the figure, this application embodiment provides a slurry supply device. The slurry supply device has a storage tank 1 equipped with a stirring paddle (not shown in the figure), a heater (not shown in the figure) and a temperature sensor (not shown in the figure) in the storage tank, and a screw pump (not shown in the figure) connected to the slurry conveying pipeline 2.

[0048] The slurry conveying pipeline 2 is equipped with a pusher ball inlet and a pusher ball outlet (not shown in the figure). The pusher ball inlet is located at the end near the storage tank 1, and the pusher ball outlet is located at the end near the finished product tank 9. The slurry conveying pipeline 2 is equipped with manual valves (not shown in the figure) for opening or closing the pusher ball inlet and the pusher ball outlet, respectively. The pusher ball inlet and the pusher ball outlet are used to fill or remove pusher balls, and the pusher balls are used to push out the slurry in the slurry conveying pipeline 2.

[0049] Working principle

[0050] This application provides a slurry supply device. The slurry supply device of this application is provided with a slurry supply unit, which includes a storage tank 1 and a finished product tank 9. A slurry conveying pipeline 2 is connected between the storage tank 1 and the finished product tank 9. A first control valve 3 is connected to the slurry conveying pipeline 2. The slurry detection unit includes a waste liquid tank 8. The waste liquid tank 8 is provided with a slurry detection pipeline and a waste liquid discharge pipeline 10 connected to the slurry conveying pipeline. A detection device 7 for detecting the solid content of the slurry is connected to the slurry detection pipeline.

[0051] Therefore, the proposed slurry supply device adds a slurry detection unit to the slurry supply unit. This slurry detection unit includes a waste liquid tank 8, which is connected to a slurry detection pipeline and a waste liquid discharge pipeline 10, both connected to the slurry delivery pipeline 2. A detection device 7 for detecting the slurry solids content is connected to the slurry detection pipeline. When the pipeline is pushed, the slurry in the slurry delivery pipeline 2 enters the slurry detection pipeline and the waste liquid discharge pipeline 10, and then enters the waste liquid tank 8. As the slurry solids content gradually increases, the density of the slurry also gradually increases, increasing gravity, and is eventually detected by the slurry solids content detection device 7, thus completing the slurry solids content detection.

[0052] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0053] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A slurry supply device, characterized in that, include: The slurry supply unit includes a storage tank (1) and a finished product tank (9). A slurry conveying pipeline (2) is connected between the storage tank (1) and the finished product tank (9). A first control valve (3) is connected to the slurry conveying pipeline (2). The slurry testing unit includes a waste liquid tank (8), which is equipped with a slurry testing pipeline and a waste liquid discharge pipeline (10) connected to the slurry conveying pipeline (2). A testing device (7) for detecting the solid content of the slurry is connected to the slurry testing pipeline. The slurry testing pipeline includes a vertical pipeline (11) and a horizontal pipeline (12) that are interconnected. The inlet of the vertical pipeline (11) is connected to the slurry conveying pipeline (2), and the outlet of the vertical pipeline (11) is connected to the horizontal pipeline (12). The detection device (7) is located at the outlet of the vertical pipe (11). The detection device (7) includes a spring support (13) that is slidably and sealingly connected to the vertical pipe (11), a compression spring (14) that elastically supports the spring support (13), and a proximity sensor (16) that detects the stroke height of the spring support (13). The detection device (7) also includes a preload bolt (15) threadedly connected to the vertical pipe (11) for adjusting the compression spring (14) to move toward or away from the proximity sensor (16). The compression spring (14) is located between the spring support (13) and the preload bolt (15). The proximity sensor (16) is fixed on the vertical pipe (11).

2. The slurry supply device as described in claim 1, characterized in that: The inlets of the slurry detection pipeline and the waste liquid discharge pipeline (10) are both located upstream of the first control valve (3). The waste liquid discharge pipeline (10) is connected to a second control valve (4). The outlet of the slurry detection pipeline is connected to the waste liquid discharge pipeline (10) and is located downstream of the second control valve (4).

3. The slurry supply device as described in claim 1, characterized in that: The vertical pipeline (11) is connected to a third control valve (5), the horizontal pipeline (12) is connected to a fourth control valve (6), the detection device (7) is located between the third control valve (5) and the fourth control valve (6), and the first control valve (3), the third control valve (5), the fourth control valve (6) and the proximity sensor (16) are all connected to a controller.

4. The slurry supply device as described in claim 1, characterized in that: The vertical pipe (11) is provided with a limiting ring that limits the spring support (13). The limiting ring is located above the spring support (13). When the spring support (13) is in a free state, it abuts against the limiting ring.

5. The slurry supply device as described in claim 1, characterized in that: The spring support (13) includes a sealing plate (17) that is slidably and sealingly connected to the vertical pipe (11), and a guide rod (18) that is fixedly connected to the sealing plate. The guide rod (18) is coaxially arranged with the sealing plate (17). The side wall of the sealing plate (17) is a conical surface (19), and the diameter of the conical surface (19) gradually increases in the direction away from the guide rod (18).

6. The slurry supply device as described in claim 1, characterized in that: The storage tank (1) is equipped with a stirring paddle, a heater and a temperature sensor, and a screw pump is connected to the slurry conveying pipeline (2).

7. The slurry supply device as described in claim 1, characterized in that: The slurry conveying pipeline (2) is provided with a pusher ball inlet and a pusher ball outlet. The pusher ball inlet is located at one end near the storage tank (1), and the pusher ball outlet is located at one end near the finished product tank (9).

8. A slurry supply device as described in claim 7, characterized in that: The slurry conveying pipeline (2) is equipped with manual valves that open or close the pusher ball inlet and the pusher ball outlet respectively.

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