Powder metering tank

Abstract

The utility model discloses a powder measuring tank, which comprises a measuring tank shell and a cover plate, a hemispherical shell is arranged at the bottom of the measuring tank shell, a stirring mechanism is arranged in the measuring tank shell and the hemispherical shell, a weighing module is arranged outside the measuring tank shell, and the measuring tank shell is funnel-shaped. According to the utility model, the mass change of the material in the powder metering tank is sensed through the plurality of weighing modules, the sensed metering weight data is transmitted to the console for real-time monitoring, the weight value of the powder can be obtained by subtracting the self weight of the powder metering tank from the detected weight value, and the material supply is stopped after the set weight is reached; different types of stirring structures of the stirring mechanism are used for stirring the interior of the powder metering tank, powder is prevented from caking and adhering to the inner wall, when powder is discharged, the valve is opened to enable the powder to be discharged from the discharging channel, in cooperation with the cleaning through opening and the cleaning plate, the materials in the powder metering tank can be cleaned up, and the discharging speed can also be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metering, in particular to a powder metering tank. Background Art

[0002] With the rapid development of the lithium battery industry, square lithium-ion batteries have currently become the main target of new energy vehicles. Among them, the quality of the slurry mixing process of square lithium batteries is of utmost importance for the production of qualified batteries. In the production of lithium batteries, materials such as ternary materials, lithium cobaltate, lithium manganate, and graphite are required. For powdery substances, a metering tank is needed for precise measurement. The metering tank, also known as a metering reactor and a quantitative metering feeding device, realizes the process metering control of feeding metering, liquids, and powder materials, as well as the finished product packaging metering control through metering sensor devices, pipelines, valves, and control instruments.

[0003] Currently, due to the phenomenon of powder sticking to the wall in the powder metering tank and the long-term storage of the metering tank, which leads to the problem of powder compaction and caking, the feeding amount cannot meet the processing requirements, and the powder feeding speed also fails to reach the requirements.

[0004] Therefore, it is necessary to invent a powder metering tank to meet the needs of new product development and production. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a powder metering tank aiming at the deficiencies of the above-mentioned prior art. By using multiple weighing modules to sense the mass change of the material in the powder metering tank, the sensed metering weight data is transmitted to the console for real-time monitoring. Subtracting the detected weight value from the self-weight of the powder metering tank can obtain the weight value of the powder. After reaching the set weight, the feeding is stopped. Different types of stirring structures of the stirring mechanism are used to stir the inside of the powder metering tank to solve the problems raised in the background art.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A powder metering tank includes a metering tank housing and a cover plate. A hemispherical shell is provided at the bottom of the metering tank housing, and a stirring mechanism is arranged inside the metering tank housing and the hemispherical shell. A weighing module is installed outside the metering tank housing.

[0008] By using the weighing module to sense the mass change of the material in the powder metering tank for real-time monitoring, and using the stirring mechanism to stir the inside of the powder metering tank, the problems of powder caking and adhesion to the inner wall can be prevented, the material in the powder metering tank can be cleaned up, and the feeding speed can also be increased.

[0009] Preferably, the outer shell of the metering tank is arranged in a funnel shape, the cover plate is fixedly installed on the top of the outer shell of the metering tank through bolt parts, the hemispherical shell is detachably installed with the outer shell of the metering tank, and the cover plate and the hemispherical shell are coaxially distributed with the outer shell of the metering tank;

[0010] A sealing gasket is arranged at the connection between the cover plate and the hemispherical shell and the outer shell of the metering tank, and the sealing gasket is made of rubber material.

[0011] Preferably, the stirring mechanism includes a stirring shaft, and a first scraping wall stirring frame, a first stirrer, a second stirrer, a third stirrer and a second scraping wall stirring frame are fixedly installed on the outer side of the stirring shaft in sequence from top to bottom;

[0012] A reduction motor is fixedly connected to the center of the top of the cover plate, and the output shaft of the reduction motor is in transmission connection with the stirring shaft.

[0013] Preferably, the shape of the first scraping wall stirring frame matches the inner wall of the outer shell of the metering tank, and the gap between the first scraping wall stirring frame and the inner wall of the outer shell of the metering tank is 2±0.5mm;

[0014] The shape of the second scraping wall stirring frame matches the inner wall of the hemispherical shell, and the gap between the second scraping wall stirring frame and the inner wall of the hemispherical shell is 2±0.5mm.

[0015] Preferably, the lengths of the first stirrer, the second stirrer and the third stirrer decrease in sequence;

[0016] The first stirrer, the second stirrer and the third stirrer each include a collar and two stirring plates, and the collar is installed on the stirring shaft through screws, and the two stirring plates are symmetrically distributed on both sides of the center of gravity of the collar.

[0017] Preferably, the two stirring plates of the first stirrer and the second stirrer are made by twisting metal sheets by 180°, and the two stirring plates of the third stirrer are made by twisting metal sheets by 360°.

[0018] Preferably, the number of the weighing modules is set to be multiple, and the multiple weighing modules are annularly arrayed about the axis of the outer shell of the metering tank. The outer shell of the metering tank is horizontally mounted on an external ring frame, and the multiple weighing modules are in contact with the external ring frame for sensing the mass change of the materials in the powder metering tank.

[0019] Preferably, a blanking channel is embedded at the bottom end of the hemispherical shell, and a valve is installed at the bottom of the blanking channel.

[0020] Preferably, a cleaning opening is arranged on one side of the blanking channel.

[0021] Preferably, a feed port, a viewing port and a spare port communicating with the inner cavity of the outer shell of the metering tank are installed on the cover plate, and a through air return port and a dust removal port are also opened on the cover plate.

[0022] The utility model has the following beneficial effects:

[0023] By multiple weighing modules to sense the mass change of the material in the powder metering tank, transmit the sensed metering weight data to the console for real-time monitoring, subtract the detected weight value from the self-weight of the powder metering tank to obtain the weight value of the powder material, stop feeding when the set weight is reached, use different types of stirring structures of the stirring mechanism to stir the inside of the powder metering tank to prevent the problems of powder caking and adhesion to the inner wall. When discharging the powder, open the valve to make the powder discharge from the feeding channel, and cooperate with the cleaning port and the cleaning plate to clean the material in the powder metering tank completely, and also improve the feeding speed. Description of the Drawings

[0024] Figure 1 Is the first perspective three-dimensional view of the overall structure of the utility model;

[0025] Figure 2 Is the second perspective three-dimensional view of the overall structure of the utility model;

[0026] Figure 3 Is the exploded view of the overall structure of the utility model;

[0027] Figure 4 Is the three-dimensional view of the partial sectional structure of the utility model;

[0028] Figure 5 Is the three-dimensional view of the stirring mechanism of the utility model.

[0029] Among them are:

[0030] Cover plate - 1; Feed inlet - 2; Observation port - 3; Metering tank shell - 4; Stirring shaft - 5; Reduction motor - 6; Return air port - 7; Spare port - 8; Dust removal port - 9; First scraping wall stirring frame - 10; Weighing module - 11; First stirrer - 12; Second scraping wall stirring frame - 13; Second stirrer - 14; Third stirrer - 15; Feeding channel - 16; Cleaning port - 17; Hemispherical shell - 18; Bolt part - 19;

[0031] Collaring - 01; Stirring plate - 02. Specific Embodiments

[0032] The following further describes the present utility model in detail in conjunction with the drawings and specific preferred embodiments.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "left side", "right side", "upper part", "lower part", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not represent the importance of the components, so it cannot be understood as a limitation to the present utility model. The specific dimensions adopted in this embodiment are only for illustrating the technical solution by way of example and do not limit the protection scope of the present utility model.

[0034] As Figures 1-5 shown, a powder metering tank includes a metering tank outer shell 4 and a cover plate 1. A hemispherical shell 18 is provided at the bottom of the metering tank outer shell 4, and a stirring mechanism is arranged inside the metering tank outer shell 4 and the hemispherical shell 18. A weighing module 11 is installed outside the metering tank outer shell 4. The number of the weighing modules 11 is set to be multiple, and the multiple weighing modules 11 are distributed in a circular array about the axis of the metering tank outer shell 4. The metering tank outer shell 4 is horizontally mounted on an external ring frame, and the multiple weighing modules 11 are attached to the external ring frame to sense the mass change of the materials in the powder metering tank. The multiple weighing modules 11 evenly bear and sense the weight of the powder metering tank and the powder inside it. Subtracting the weight of the powder metering tank itself from this weight can obtain the weight value of the powder. During the feeding process, the weighing module 11 transmits the metering weight data to the console for real-time monitoring;

[0035] As a preferred embodiment of the stirring mechanism, it includes a stirring shaft 5. A first scraping wall stirring frame 10, a first stirrer 12, a second stirrer 14, a third stirrer 15 and a second scraping wall stirring frame 13 are successively and fixedly installed on the outer side of the stirring shaft 5 from top to bottom;

[0036] A reduction motor 6 is fixedly connected to the center of the top of the cover plate 1, and the output shaft of the reduction motor 6 is in transmission connection with the stirring shaft 5. Different types of stirring structures are used to stir the inside of the powder metering tank driven by the reduction motor 6 to reduce the phenomenon of powder hanging on the wall.

[0037] Specifically, the metering tank outer shell 4 is arranged in a funnel shape to facilitate the directional transportation of the powder. The cover plate 1 is fixedly installed on the top of the metering tank outer shell 4 through a bolt member 19. The hemispherical shell 18 is detachably installed with the metering tank outer shell 4, and the cover plate 1 and the hemispherical shell 18 are both coaxially distributed with the metering tank outer shell 4;

[0038] Sealing gaskets are provided at the joints of the cover plate 1 and the hemispherical shell 18 with the metering tank outer shell 4, and the sealing gaskets are made of rubber material.

[0039] Specifically, the shape of the first scraping and stirring frame 10 matches the inner wall of the metering tank housing 4, and the gap between the first scraping and stirring frame 10 and the inner wall of the metering tank housing 4 is 2 ± 0.5 mm. The first scraping and stirring frame 10 can scrape the bottom wall of the cover plate 1 and the inner wall of the metering tank housing 4; the shape of the second scraping and stirring frame 13 matches the inner wall of the hemispherical shell 18, and the gap between the second scraping and stirring frame 13 and the inner wall of the hemispherical shell 18 is 2 ± 0.5 mm. The second scraping and stirring frame 13 can scrape the inner wall of the hemispherical shell 18, clean the powder adhered to the inner wall of the powder metering tank, and reduce the wall hanging phenomenon.

Claims

1. A powder measuring tank, comprising a measuring tank shell (4) and a cover plate (1), characterized in that: A hemispherical shell (18) is provided at the bottom of the metering tank shell (4), and a stirring mechanism is provided inside the metering tank shell (4) and the hemispherical shell (18), and a weighing module (11) is installed outside the metering tank shell (4).

2. A powder measuring tank according to claim 1, characterized in that: The metering tank housing (4) is configured to be funnel-shaped, the cover plate (1) is fastened to the top of the metering tank housing (4) by means of bolts (19), the hemispherical shell (18) and the metering tank housing (4) are detachably mounted, and the cover plate (1) and the hemispherical shell (18) are coaxially distributed with the metering tank housing (4); A sealing gasket is provided at the connection between the cover plate (1) and the hemispherical shell (18) and the outer shell (4) of the metering tank, and the sealing gasket is made of rubber material.

3. A powder measuring tank according to claim 1, characterized in that: The stirring mechanism comprises a stirring shaft (5), and a first wall-scraping stirring frame (10), a first stirrer (12), a second stirrer (14), a third stirrer (15) and a second wall-scraping stirring frame (13) are fixedly mounted on the outer side of the stirring shaft (5) in order from top to bottom; A reduction motor (6) is fixedly connected to the axis center of the top of the cover plate (1), and the output shaft of the reduction motor (6) is drivingly connected to the stirring shaft (5).

4. A powder measuring tank according to claim 3, characterized in that: The first wall scraping stirring frame (10) matches the shape of the inner wall of the metering tank shell (4), and the gap between the first wall scraping stirring frame (10) and the inner wall of the metering tank shell (4) is 2±0.5 mm; The second wall scraping stirring frame (13) matches the shape of the inner wall of the hemispherical shell (18), and the gap between the second wall scraping stirring frame (13) and the inner wall of the hemispherical shell (18) is 2±0.5 mm.

5. A powder measuring tank according to claim 3, characterized in that: The lengths of the first stirrer (12), the second stirrer (14) and the third stirrer (15) decrease in sequence; The first agitator (12), the second agitator (14) and the third agitator (15) all comprise a collar (01) and two sections of stirring plates (02), wherein the collar (01) is mounted on the stirring shaft (5) by means of screws, and the two sections of stirring plates (02) are centrally symmetrically distributed on both sides of the center of gravity of the collar (01).

6. A powder measuring tank according to claim 3, characterized in that: The two sections of stirring plates (02) of the first stirrer (12) and the second stirrer (14) are both made of metal sheets twisted 180 degrees, and the two sections of stirring plates (02) of the third stirrer (15) are both made of metal sheets twisted 360 degrees.

7. A powder measuring tank according to claim 1, characterized in that: The number of the weighing modules (11) is set to be multiple, and the multiple weighing modules (11) are distributed in a circular array about the axis of the metering tank shell (4). The metering tank shell (4) is horizontally mounted on an external ring frame, and the multiple weighing modules (11) are attached to the external ring frame for sensing mass changes of materials in the powder metering tank.

8. A powder measuring tank according to claim 1, characterized in that: A material discharge channel (16) is embedded in the bottom end of the hemispherical shell (18), and a valve is installed at the bottom of the material discharge channel (16).

9. A powder measuring tank according to claim 8, characterized in that: A cleaning opening (17) is provided on one side of the material discharge channel (16).

10. A powder measuring tank according to claim 1, characterized in that: The cover plate (1) is provided with a feed port (2), a viewing port (3) and a standby port (8) which are connected to the inner cavity of the metering tank shell (4), and the cover plate (1) is also provided with a penetrating air return port (7) and a dust removal port (9).

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