Feeding mechanism of lithium ion positive electrode material production stock bin

Abstract

The utility model provides a feeding mechanism of a lithium ion positive electrode material production stock bin, which adopts a conveying pipeline, a ceramic lining, a ceramic buffer block and a flange, the ceramic lining is used as the lining of the conveying pipeline, the ceramic buffer block is fixed at the tail end of the conveying pipeline, and the conveying pipeline is fixedly connected with the ceramic lining and the ceramic buffer block through adhesive layers arranged between the conveying pipeline and the ceramic buffer block. The conveying pipeline is provided with a discharge hole opposite to the ceramic buffer block; furthermore, the ceramic buffer block is optimized to be a wedge-shaped block or a conical block, and a barrier plate is arranged at the tail end of the ceramic buffer block; the feeding mechanism is made of a ceramic material, is sufficient in wear resistance and stable in structure, can resist material washing for a long time without being damaged in the material conveying process, and improves the stability and quality of lithium battery material production.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium ion material production equipment, and in particular relates to a feeding mechanism for a lithium ion positive electrode material production silo. Background Art

[0002] The production of lithium-ion materials such as positive electrode materials requires the use of air conveying equipment to transport materials across equipment and floors to improve production efficiency. The conveying equipment uses compressed air to blow the materials into the conveying pipeline. The materials flow quickly in the conveying pipeline and are finally transported to the silo of the required process. Because lithium battery materials are extremely strict in controlling foreign matter, especially metal foreign matter, the equipment silos are all equipped with Teflon coatings for isolation. The existing silos are driven by high-pressure gas to enter the silo. When entering the silo at the end of the silo conveying pipeline, there is a strong impact, which will cause the Teflon coating of the silo to be washed away by the high-speed flowing materials, resulting in the wear of the Teflon coating, and the continuous friction between the exposed metal substrate and the material, resulting in a large amount of magnetic foreign matter contaminating the material, which ultimately leads to the output of unqualified products. Utility Model Content

[0003] The utility model provides a feeding mechanism for a lithium ion positive electrode material production silo, which transforms a conveying pipeline and adds a buffer structure to achieve material buffering at the end of the pipeline, so that the material finally falls slowly into the silo, so that the material does not rub the silo, thereby effectively solving the above-mentioned problem.

[0004] The utility model is achieved in this way:

[0005] A feeding mechanism for a lithium-ion positive electrode material production silo comprises a conveying pipeline, a ceramic liner, a ceramic buffer block and a flange, wherein the ceramic liner is arranged in the conveying pipeline, the ceramic buffer block is fixed to the end of the conveying pipeline, and the conveying pipeline is provided with a discharge port relative to the ceramic buffer block; an adhesive layer is provided between the conveying pipeline and the ceramic liner and the ceramic buffer block.

[0006] As a further improvement, the ceramic buffer block is a wedge-shaped block, and the inclined surface of the wedge-shaped block is arranged opposite to the discharge port.

[0007] As a further improvement, the inclination angle of the wedge block is 30°-45°, and the opening area of ​​the discharge port is 1 / 2-2 / 3 of the total area of ​​the opening section pipeline.

[0008] As a further improvement, the ceramic buffer block is a conical block, and the discharge ports are distributed around the conveying pipeline opposite to the inclined surface of the conical block.

[0009] As a further improvement, the inclination angle of the conical block is 25°-45°, and the opening area of ​​the discharge port is 1 / 2-4 / 5 of the total area of ​​the opening section pipeline.

[0010] As a further improvement, the inclined surface of the wedge-shaped block or the conical block of the ceramic buffer block is an arc-shaped surface.

[0011] As a further improvement, the surface of the wedge-shaped block or the conical block of the ceramic buffer block is provided with buffer protrusions.

[0012] As a further improvement, a blocking plate is provided at the end of the ceramic buffer block, and the blocking plate is fixedly connected to the conveying pipeline.

[0013] As a further improvement, a reinforcing rib is provided between the inner side of the conveying pipe and the blocking plate.

[0014] As a further improvement, the conveying pipeline is a stainless steel pipeline; the flange is provided with a silo flange and a pipeline flange, the pipeline flange is arranged at the upstream end of the conveying pipeline, and the silo flange is arranged at the downstream side of the pipeline flange.

[0015] The beneficial effects of the utility model are as follows: the feeding mechanism adopts a conveying pipe, a ceramic liner, a ceramic buffer block and a flange, the ceramic liner is used as the conveying pipe liner, the ceramic buffer block is fixed to the end of the conveying pipe, an adhesive layer is provided between the conveying pipe and the ceramic liner and the ceramic buffer block for fixed connection, and the conveying pipe is provided with a discharge port relative to the ceramic buffer block; the ceramic buffer block is further optimized to be set as a wedge block or a conical block, and a blocking plate is provided at the end; the feeding mechanism uses ceramic material, has sufficient wear resistance, and has a stable structure. During the material conveying process, it can resist the erosion of materials for a long time without being damaged, thereby improving the stability and quality of lithium battery material production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model 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 creative work.

[0017] Figure 1 It is a cross-sectional view of an embodiment of a feeding mechanism of a lithium ion positive electrode material production silo of the utility model;

[0018] Figure 2 It is a structural schematic diagram provided by an embodiment of a feeding mechanism of a lithium ion positive electrode material production silo of the utility model;

[0019] Figure 3 This is a cross-sectional view provided by an embodiment of a feeding mechanism of a lithium ion positive electrode material production silo of the utility model;

[0020] Figure 4It is a structural schematic diagram provided by another embodiment of a feeding mechanism of a lithium ion positive electrode material production silo of the utility model.

[0021] Figure 5 It is a cross-sectional view provided by another embodiment of a feeding mechanism for a lithium ion positive electrode material production silo of the utility model.

[0022] Figure 6 It is a schematic diagram of the use status provided by another embodiment of a feeding mechanism of a lithium ion positive electrode material production silo of the utility model.

[0023] Reference numerals:

[0024] Conveying pipeline 1; discharge port 11; blocking plate 12; ceramic lining 2; ceramic buffer block 3; wedge block 31; conical block 32; flange 4; silo flange 41; pipeline flange 42; adhesive layer 5; silo 6. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0026] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the description of the present invention, the terms "upper", "middle", "side", "side", "upper side", "end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Reference Figure 1-6As shown, a feeding mechanism for a lithium-ion positive electrode material production silo includes a conveying pipe 1, a ceramic lining 2, a ceramic buffer block 3 and a flange 4. The ceramic lining 2 is arranged in the conveying pipe 1, and the ceramic buffer block 3 is fixed to the end of the conveying pipe 1. The conveying pipe 1 is provided with a discharge port 11 relative to the ceramic buffer block 3; an adhesive layer 5 is provided between the conveying pipe 1 and the ceramic lining 2 and the ceramic buffer block 3.

[0029] The conveying pipe 1 is provided with a ceramic lining 2, and a ceramic buffer block 3 is provided at the end to improve the wear resistance of the feeding mechanism and avoid the introduction of metal foreign matter. The feeding structure can be directly installed on the feed port of the existing silo 6 through the flange 4, and the conveying pipe 1 is inserted into the feed port of the silo 6, and the flange 4 is locked with the flange of the original feed port; the material enters the silo 6 from the side of the conveying pipe 1 after being buffered by the ceramic buffer block 3, avoiding direct rushing out and washing the Teflon coating of the silo 6. The adhesive layer is a special adhesive for ceramics, such as high-temperature resistant epoxy resin adhesive, modified silicate adhesive, high-temperature resistant polyimide adhesive, etc.

[0030] Furthermore, the ceramic buffer block 3 is a wedge-shaped block 31 , and the inclined surface of the wedge-shaped block 31 is arranged opposite to the discharge port 11 .

[0031] Furthermore, the inclination angle of the wedge block 31 is 30°-45°, and the opening area of ​​the discharge port 11 is 1 / 2-2 / 3 of the total area of ​​the opening section pipeline.

[0032] The slope angle is the acute angle between the inclined plane and the horizontal line. Lithium battery positive electrode materials have the characteristics of high viscosity and easy agglomeration, so a larger angle such as 35°-45° is required to prevent materials from accumulating at the outlet of the conveying pipeline and causing blockage. However, it should not be too large. Too large an angle will lead to reduced buffering effect and fail to play the desired role. For materials with good fluidity, a gentle angle such as 30°-35° can be selected. The specific angle can be adjusted according to the characteristics of the conveyed material and the industry used.

[0033] The ceramic buffer block 3 of the wedge-shaped block 31 can achieve a buffering effect and realize rapid material discharge.

[0034] Furthermore, the ceramic buffer block 3 is a conical block 32 , and the discharge ports 11 are distributed around the conveying pipeline 1 opposite to the inclined surface of the conical block 32 .

[0035] Furthermore, the inclination angle of the conical block 32 is 25°-45°, and the opening area of ​​the discharge port 11 is 1 / 2-4 / 5 of the total area of ​​the opening section pipeline.

[0036] The slope angle is the acute angle between the inclined plane and the horizontal line. Lithium battery positive electrode materials have the characteristics of high viscosity and easy agglomeration, so a larger angle such as 35°-45° is required to prevent materials from accumulating at the outlet of the conveying pipeline and causing blockage. However, it should not be too large. Too large an angle will lead to reduced buffering effect and fail to play the desired role. For materials with good fluidity, a gentle angle such as 25°-35° can be selected. The specific angle can be adjusted according to the characteristics of the conveyed material and the industry used.

[0037] The conical block 32 can diffuse the material to the surroundings, and the design of the openings on the surroundings forms surrounding supports, which can form a larger discharge port 11 area, and has a smaller buffer slope, and the buffer effect is more obvious.

[0038] Furthermore, the inclined surface of the wedge block 31 or the conical block 32 of the ceramic buffer block 3 is an arc surface.

[0039] A certain gradual buffer surface can be formed to reduce the impact on the ceramic buffer block 3.

[0040] Furthermore, the surface of the wedge block 31 or the conical block 32 of the ceramic buffer block 3 is provided with buffer bumps (not shown).

[0041] The cushioning bumps further increase the cushioning effect.

[0042] Furthermore, a blocking plate 12 is provided at the end of the ceramic buffer block 3 , and the blocking plate 12 is fixedly connected to the conveying pipeline 1 .

[0043] The blocking plate 12 supports the ceramic buffer block 3 to prevent the adhesive layer 5 from falling off and being damaged.

[0044] Furthermore, a reinforcing rib (not shown) is provided between the inner side of the conveying pipe 1 and the blocking plate 12 .

[0045] The reinforcing ribs enhance the supporting effect of the blocking plate 12, especially the ceramic buffer block 3 of the wedge block 31 for the single-sided outlet.

[0046] Furthermore, the conveying pipeline 1 is a stainless steel pipeline; the flange 4 is provided with a silo flange 41 and a pipeline flange 42 , the pipeline flange 42 is provided at the upstream end of the conveying pipeline 1 , and the silo flange 41 is provided at the downstream side of the pipeline flange 42 .

[0047] The silo flange 41 is locked with the flange of the original silo 6 feed port to seal and fix, and the pipe flange 42 is connected with the material conveying pipe.

[0048] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A feeding mechanism for a lithium ion positive electrode material production silo, characterized in that: It includes a conveying pipeline, a ceramic lining, a ceramic buffer block and a flange. The ceramic lining is arranged in the conveying pipeline, the ceramic buffer block is fixed to the end of the conveying pipeline, and the conveying pipeline is provided with a discharge port relative to the ceramic buffer block; an adhesive layer is provided between the conveying pipeline and the ceramic lining and the ceramic buffer block.

2. The feeding mechanism for a lithium ion positive electrode material production silo according to claim 1, characterized in that: The ceramic buffer block is a wedge-shaped block, and the inclined surface of the wedge-shaped block is arranged opposite to the discharge port.

3. The feeding mechanism for a lithium ion positive electrode material production silo according to claim 2, characterized in that: The inclination angle of the wedge block is 30°-45°, and the opening area of ​​the discharge port is 1 / 2-2 / 3 of the total area of ​​the opening section pipeline.

4. The feeding mechanism for a lithium ion positive electrode material production silo according to claim 1, characterized in that: The ceramic buffer block is a conical block, and the discharge ports are distributed around the conveying pipeline opposite to the inclined surface of the conical block.

5. The feeding mechanism for a lithium ion positive electrode material production silo according to claim 4, characterized in that: The inclination angle of the conical block is 25°-45°, and the opening area of ​​the discharge port is 1 / 2-4 / 5 of the total area of ​​the opening section pipeline.

6. A feeding mechanism for a lithium ion positive electrode material production silo according to claim 1, 2 or 4, characterized in that: The inclined surface of the wedge-shaped block or the conical block of the ceramic buffer block is an arc-shaped surface.

7. A feeding mechanism for a lithium ion positive electrode material production silo according to claim 1, 2 or 4, characterized in that: The surface of the wedge-shaped block or the conical block of the ceramic buffer block is provided with buffer convex points.

8. A feeding mechanism for a lithium ion positive electrode material production silo according to claim 1, 2 or 4, characterized in that: A blocking plate is provided at the end of the ceramic buffer block, and the blocking plate is fixedly connected to the conveying pipeline.

9. The feeding mechanism for a lithium ion positive electrode material production silo according to claim 8, characterized in that: A reinforcing rib is provided between the inner side of the conveying pipe and the blocking plate.

10. The feeding mechanism for a lithium ion positive electrode material production silo according to claim 1, characterized in that: The conveying pipeline is a stainless steel pipeline; the flange is provided with a silo flange and a pipeline flange, the pipeline flange is arranged at the upstream end of the conveying pipeline, and the silo flange is arranged at the downstream side of the pipeline flange.

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