Negative pressure sampling system of functional slurry for lithium battery

Abstract

The utility model discloses a negative pressure sample introduction system of functional slurry for lithium batteries, which belongs to the technical field of sample introduction equipment and comprises a sample introduction table, a defoaming tank is arranged at one end of the sample introduction table, a feed port is formed in the top end of the defoaming tank, a vibration mechanism is arranged at the bottom end of the defoaming tank and fixedly connected to the upper surface of the sample introduction table, and a feeding port is formed in the feed port. The other end of the sample introduction table is fixedly connected with a filtering tank, one end of the filtering tank is provided with a slurry feeding assembly, the other end of the slurry feeding assembly is communicated with the inner cavity of the defoaming tank, the other end of the filtering tank is provided with a negative pressure sample introduction machine, a sample introduction pipe of the negative pressure sample introduction machine is communicated with the inner cavity of the filtering tank, and the inner cavity of the filtering tank is provided with a filter screen; a rotating seat is arranged at the top end of the filter screen, a cleaning plate is arranged at the bottom end of the rotating seat, the lower surface of the cleaning plate is attached to the upper surface of the filter screen, and a driving assembly is arranged at the top end of the rotating seat, so that blockage caused by excessive impurities is avoided, the slurry sampling speed is increased, and the working efficiency of sampling work is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sample injection equipment, in particular to a negative pressure sample injection system for functional slurry used in lithium batteries. Background Technique

[0002] A lithium battery is a type of battery with lithium metal or lithium alloy as the positive / negative electrode material and using a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. During the production of lithium batteries, a sample injection device is required to inject the functional slurry into the detection equipment for detection.

[0003] Existing sample injection devices can only simply extract the functional slurry. The produced functional slurry contains more impurities. When there are too many impurities, it is easy to block the sample injection device, reduce the sample injection speed, lower the working efficiency of the sample injection device, and easily affect the quality of the slurry after sample injection.

[0004] According to the utility model with the publication number: CN218725636U, a slurry sampling device. The slurry sampling device according to the utility model includes a first storage device and a second storage device; a conveying pipeline that connects the first storage device and the second storage device; a valve body that is arranged on the conveying pipeline to selectively control the conduction or closing of the conveying pipeline; wherein the valve body is adapted to conduct the conveying pipeline when the second storage device reaches a preset weight and / or within a preset time. According to the slurry sampling device of the utility model, by setting the first storage device and the second storage device for storing the slurry and collecting samples, and setting the valve body for controlling the conduction and closing of the conveying pipeline, multiple samplings of the slurry sampling device are realized, and each sampling meets the preset required weight, improving the accuracy of the slurry sampling device.

[0005] According to the above-introduced sampling device, when there are too many impurities, it is easy to cause blockage, reduce the sample injection speed, and lower the working efficiency of the sample injection work. Therefore, we need to propose a negative pressure sample injection system for functional slurry used in lithium batteries. Content of the Utility Model

[0006] The purpose of the utility model is to provide a negative pressure sample injection system for functional slurry used in lithium batteries. Through the setting of the filter screen in the filter tank, the impurities in the slurry can be filtered. The driving component is started to drive the rotating seat to rotate, so that the rotating seat drives the cleaning plate to rotate to scrape the impurities on the filter screen, avoiding the blockage of the filter screen, thereby avoiding the blockage caused by too many impurities, improving the sample injection speed of the slurry, and improving the working efficiency of the sample injection work, so as to solve the problems raised in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solution: A negative pressure sampling system for a functional slurry used in a lithium battery, including a sampling table, one end of the sampling table is provided with a defoaming tank, the top of the defoaming tank is provided with a feed port, the bottom of the defoaming tank is provided with a vibration mechanism for vibrating the defoaming tank, the vibration mechanism is fixedly connected to the upper surface of the sampling table, the other end of the sampling table is fixedly connected with a filtering tank, one end of the filtering tank is provided with a slurry feeding assembly for conveying the slurry, the other end of the slurry feeding assembly is communicated with the inner cavity of the defoaming tank, the other end of the filtering tank is provided with a negative pressure sampler, the sampling tube of the negative pressure sampler is communicated with the inner cavity of the filtering tank, a filter screen is arranged in the inner cavity of the filtering tank, a rotating seat is arranged at the top of the filter screen, a cleaning plate is arranged at the bottom of the rotating seat, the lower surface of the cleaning plate is attached to the upper surface of the filter screen, and a driving assembly for driving the rotating seat to rotate is arranged at the top of the rotating seat.

[0008] Preferably, the vibration mechanism includes a support frame, the support frame is fixedly connected to the upper surface of the sampling table, a first motor is fixedly installed at the bottom of the support frame, the output shaft of the first motor is fixedly connected with a support rod, the outer surface of the support rod is rotationally connected to the surface of the support frame through a rotating shaft, the top of the support rod penetrates through the support frame and is fixedly connected with a support disk, a support block is arranged at the top of the support disk, and one surface of the support block is provided with an inclined section.

[0009] Preferably, both ends of the defoaming tank are fixedly connected with sliders, a chute is arranged on the inner side wall of the support frame, and the sliders are slidably connected with the inner cavity of the chute.

[0010] Preferably, the slurry feeding assembly includes a slurry suction pump, the slurry suction pump is fixedly connected to the upper surface of the sampling table, the slurry suction port of the slurry suction pump is communicated with a slurry suction hose, the other end of the slurry suction hose is communicated with the inner cavity of the defoaming tank, the slurry feeding port of the slurry suction pump is communicated with a slurry feeding pipe, and the other end of the slurry feeding pipe is communicated with the inner cavity of the filtering tank.

[0011] Preferably, the driving assembly includes a second motor, the output shaft of the second motor is fixedly connected with a rotating rod, the outer surface of the rotating rod is rotationally connected to the surface of the filtering tank through a rotating shaft, the bottom of the rotating rod penetrates through the filtering tank and is fixedly connected with the top of the rotating seat.

[0012] Preferably, the shape of the cleaning plate is arc-shaped, three groups of the cleaning plates are arranged, and the three groups of cleaning plates are distributed around the center of the circle on the lower surface of the rotating seat.

[0013] Preferably, four groups of the support blocks are arranged, and the four groups of support blocks are distributed around the center of the circle on the upper surface of the support disk.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. The present utility model provides a negative pressure sampling system for functional slurry used in lithium batteries. Through the setting of the filter screen in the filter tank, impurities in the slurry can be filtered. The driving component is started to drive the rotating seat to rotate, so that the rotating seat drives the cleaning plate to rotate to scrape the impurities on the filter screen, avoiding the blockage of the filter screen, thus avoiding the blockage caused by excessive impurities, improving the sampling speed of the slurry, and enhancing the working efficiency of the sampling operation.

[0016] 2. The present utility model provides a negative pressure sampling system for functional slurry used in lithium batteries. Pour the slurry to be detected into the defoaming tank, start the vibration mechanism to vibrate the defoaming tank, and the slurry in the defoaming tank is defoamed due to vibration, thereby improving the quality of the slurry after sampling and avoiding the influence of bubbles in the slurry on the detection effect.

[0017] Other features and advantages of the present utility model will be described in the following specification. And, partly, they will become obvious from the specification, or can be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0019] Figure 2 is a schematic top - view structural diagram of the present utility model;

[0020] Figure 3 is a schematic structural diagram of a partial cross - section of the filter tank of the present utility model;

[0021] Figure 4 is a schematic structural diagram of a partial cross - section of the vibration mechanism of the present utility model.

[0022] In the figure: 1, sampling platform; 2, defoaming tank; 3, feed inlet; 4, vibration mechanism; 41, support frame; 42, first motor; 43, support rod; 44, support disk; 45, support block; 5, filter tank; 6, slurry feeding assembly; 61, slurry suction pump; 62, slurry suction hose; 63, slurry feeding pipe; 7, negative pressure sampler; 8, filter screen; 9, rotating seat; 10, cleaning plate; 11, driving component; 111, second motor; 112, rotating rod; 12, slider; 13, sliding groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-4 , the present invention provides a technical solution: a negative pressure sampling system for a functional slurry used in a lithium battery, which includes a sampling table 1. One end of the sampling table 1 is provided with a defoaming tank 2. The top of the defoaming tank 2 is provided with a feed port 3. The bottom of the defoaming tank 2 is provided with a vibration mechanism 4 for vibrating the defoaming tank 2. The vibration mechanism 4 is fixedly connected to the upper surface of the sampling table 1. The other end of the sampling table 1 is fixedly connected to a filtering tank 5. One end of the filtering tank 5 is provided with a slurry feeding component 6 for conveying the slurry. The other end of the slurry feeding component 6 is communicated with the inner cavity of the defoaming tank 2. The other end of the filtering tank 5 is provided with a negative pressure sampler 7. The sampling tube of the negative pressure sampler 7 is communicated with the inner cavity of the filtering tank 5. A filter screen 8 is arranged in the inner cavity of the filtering tank 5. The top of the filter screen 8 is provided with a rotating seat 9. The bottom of the rotating seat 9 is provided with a cleaning plate 10. The lower surface of the cleaning plate 10 is attached to the upper surface of the filter screen 8. The top of the rotating seat 9 is provided with a driving component 11 for driving the rotating seat 9 to rotate;

[0025] Pour the functional slurry into the defoaming tank 2 from the feed port 3. Start the vibration mechanism 4 to drive the defoaming tank 2 to vibrate, so that the slurry in the defoaming tank 2 eliminates bubbles due to vibration. After vibration, start the slurry feeding component 6 to send the slurry into the filtering tank 5. The impurities in the slurry are filtered by the filter screen 8 in the filtering tank 5. At the same time, start the driving component 11 to drive the rotating seat 9 to rotate, so that the rotating seat 9 drives the cleaning plate 10 at the bottom to scrape the impurities on the filter screen 8, avoiding the blockage of the filter screen 8, thus avoiding blockage caused by excessive impurities, improving the sampling speed of the slurry, and improving the working efficiency of the sampling work.

[0026] The vibration mechanism 4 includes a support frame 41, the support frame 41 is fixedly connected to the upper surface of the sample introduction table 1, a first motor 42 is fixedly installed at the bottom end of the support frame 41, an output shaft of the first motor 42 is fixedly connected to a support rod 43, an outer surface of the support rod 43 is rotationally connected to a surface of the support frame 41 through a rotating shaft, a top end of the support rod 43 penetrates through the support frame 41 and is fixedly connected to a support disk 44, a support block 45 is arranged at a top end of the support disk 44, one surface of the support block 45 is arranged as an inclined section. When the first motor 42 is started to provide driving force to drive the support rod 43 to rotate, the support rod 43 drives the support disk 44 to rotate, the support disk 44 drives the support block 45 to rotate. When the inclined section at one end of the support block 45 contacts a bottom end of the defoaming tank 2, the defoaming tank 2 moves upward. When the support block 45 moves to the other end, the defoaming tank 2 moves downward. The defoaming tank 2 continuously moves up and down to vibrate the slurry, so as to eliminate bubbles in the slurry.

[0027] Both ends of the defoaming tank 2 are fixedly connected with sliding blocks 12, inner side walls of the support frame 41 are provided with sliding grooves 13, and the sliding blocks 12 are slidably connected with inner cavities of the sliding grooves 13. Through the cooperation of the sliding blocks 12 and the sliding grooves 13, the stability of the defoaming tank 2 moving up and down in the support frame 41 is improved, and the defoaming tank 2 is prevented from moving.

[0028] The slurry feeding assembly 6 includes a slurry suction pump 61, the slurry suction pump 61 is fixedly connected to the upper surface of the sample introduction table 1, a slurry suction port of the slurry suction pump 61 is communicated with a slurry suction hose 62, the other end of the slurry suction hose 62 is communicated with an inner cavity of the defoaming tank 2, a slurry feeding port of the slurry suction pump 61 is communicated with a slurry feeding pipe 63, and the other end of the slurry feeding pipe 63 is communicated with an inner cavity of the filtering tank 5. When the slurry suction pump 61 is started to provide driving force, the slurry in the defoaming tank 2 is extracted through the slurry suction hose 62, and then the slurry is sent into the filtering tank 5 through the slurry feeding pipe 63 for filtering work.

[0029] The driving assembly 11 includes a second motor 111, an output shaft of the second motor 111 is fixedly connected to a rotating rod 112, an outer surface of the rotating rod 112 is rotationally connected to a surface of the filtering tank 5 through a rotating shaft, a bottom end of the rotating rod 112 penetrates through the filtering tank 5 and is fixedly connected to a top end of a rotating seat 9. The second motor 111 provides driving force to drive the rotating rod 112 to rotate, so that the rotating rod 112 drives the rotating seat 9 to drive a cleaning plate 10 at the bottom end to rotate.

[0030] The cleaning plate 10 is arranged in an arc shape, there are three groups of cleaning plates 10, and the three groups of cleaning plates 10 are distributed around the center of a circle on a lower surface of the rotating seat 9. Through the arrangement of the three groups of cleaning plates 10, the cleaning efficiency of the cleaning plates 10 for impurities on the filter screen 8 is improved, and impurities are prevented from accumulating on the filter screen 8.

[0031] There are four sets of support blocks 45. The four sets of support blocks 45 are distributed around the center of the circle on the upper surface of the support plate 44. Through the arrangement of the support blocks 45, the support effect of the support blocks 45 on the bottom end of the defoaming tank 2 is improved, and the stability of the support blocks 45 driving the defoaming tank 2 to move is enhanced.

[0032] During specific use: Pour the functional slurry into the defoaming tank 2 from the feed port 3, start the first motor 42 to provide driving force to drive the support rod 43 to rotate, so that the support rod 43 drives the support plate 44 to rotate, the support plate 44 drives the support block 45 to rotate, and the support block 45 contacts the bottom end of the defoaming tank 2 through the inclined plane, so that the defoaming tank 2 moves upward. When the support block 45 moves to the other end, the defoaming tank 2 moves downward. The defoaming tank 2 continuously moves up and down to vibrate the slurry, so that the bubbles in the slurry are eliminated. Then start the slurry suction pump 61 to extract the slurry in the defoaming tank 2 through the slurry suction hose 62, and then the slurry supply pipe 63 sends the slurry into the filtration tank 5. The impurities in the slurry are filtered through the filter screen 8. During filtration, start the second motor 111 to drive the rotating rod 112 to rotate, so that the rotating rod 112 drives the rotating seat 9 to drive the cleaning plate 10 at the bottom to rotate. The cleaning plate 10 rotates to clean the impurities on the filter screen 8 to prevent the filter screen 8 from being blocked. Finally, start the vacuum sampler to extract the slurry in the filtration tank 5 through the sampling pipe and send it into the testing equipment through the sample delivery pipe for testing, thereby avoiding blockage caused by excessive impurities, improving the sampling speed of the slurry, and improving the working efficiency of the sampling work.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A negative pressure sampling system for functional slurry used in lithium batteries, comprising a sampling table (1), characterized in that: One end of the sample injection table (1) is provided with an anti-foaming tank (2). The top of the anti-foaming tank (2) is provided with a feed inlet (3). The bottom of the anti-foaming tank (2) is provided with a vibration mechanism (4) for vibrating the anti-foaming tank (2). The vibration mechanism (4) is fixedly connected to the upper surface of the sample injection table (1). The other end of the sample injection table (1) is fixedly connected with a filtration tank (5). One end of the filtration tank (5) is provided with a slurry feeding assembly (6) for feeding the slurry. The other end of the slurry feeding assembly (6) is communicated with the inner cavity of the anti-foaming tank (2). The other end of the filtration tank (5) is provided with a negative pressure sample injector (7). The sample injection pipe of the negative pressure sample injector (7) is communicated with the inner cavity of the filtration tank (5). A filter screen (8) is arranged in the inner cavity of the filtration tank (5). The top of the filter screen (8) is provided with a rotating seat (9). The bottom of the rotating seat (9) is provided with a cleaning plate (10). The lower surface of the cleaning plate (10) is attached to the upper surface of the filter screen (8). The top of the rotating seat (9) is provided with a driving assembly (11) for driving the rotating seat (9) to rotate.

2. The negative pressure sampling system for a functional slurry used in a lithium battery according to claim 1, wherein: The vibration mechanism (4) includes a support frame (41). The support frame (41) is fixedly connected to the upper surface of the sample injection table (1). A first motor (42) is fixedly installed at the bottom of the support frame (41). The output shaft of the first motor (42) is fixedly connected with a support rod (43). The outer surface of the support rod (43) is rotationally connected to the surface of the support frame (41) through a rotating shaft. The top of the support rod (43) penetrates through the support frame (41) and is fixedly connected with a support disc (44). A support block (45) is arranged at the top of the support disc (44). One side of the support block (45) is provided with an inclined section.

3. The negative pressure sampling system for a functional slurry used in a lithium battery according to claim 2, characterized in that: Sliders (12) are fixedly connected to both ends of the anti-foaming tank (2). A sliding groove (13) is formed in the inner side wall of the support frame (41). The sliders (12) are slidably connected to the inner cavity of the sliding groove (13).

4. The negative pressure sampling system for a functional slurry used in a lithium battery according to claim 1, characterized in that: The slurry feeding assembly (6) includes a slurry suction pump (61). The slurry suction pump (61) is fixedly connected to the upper surface of the sample injection table (1). The slurry suction port of the slurry suction pump (61) is communicated with a slurry suction hose (62). The other end of the slurry suction hose (62) is communicated with the inner cavity of the anti-foaming tank (2). The slurry feeding port of the slurry suction pump (61) is communicated with a slurry feeding pipe (63). The other end of the slurry feeding pipe (63) is communicated with the inner cavity of the filtration tank (5).

5. The negative pressure sampling system for a functional slurry used in a lithium battery according to claim 1, characterized in that: The driving assembly (11) includes a second motor (111). The output shaft of the second motor (111) is fixedly connected with a rotating rod (112). The outer surface of the rotating rod (112) is rotationally connected to the surface of the filtration tank (5) through a rotating shaft. The bottom of the rotating rod (112) penetrates through the filtration tank (5) and is fixedly connected to the top of the rotating seat (9).

6. The negative pressure sampling system for a functional slurry used in a lithium battery according to claim 1, characterized in that: The cleaning plate (10) is arc-shaped. There are three groups of the cleaning plates (10). The three groups of the cleaning plates (10) are distributed around the center of the circle on the lower surface of the rotating seat (9).

7. The negative pressure sampling system for a functional slurry used in a lithium battery according to claim 2, wherein: Four sets of the supporting blocks (45) are provided, and the four sets of the supporting blocks (45) are distributed around the center of the circle on the upper surface of the supporting disc (44).

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