Anti-blocking bent pipe assembly and spray drying and collecting system for lithium battery positive electrode material

Abstract

The utility model relates to an anti-blocking bent pipe assembly which comprises a bent pipe body and a push plate. Wherein a through hole is formed in the side wall of the elbow main body; the push plate is attached to the inner wall, provided with the through opening, of the elbow main body, a push rod is fixedly arranged on the side, close to the through opening, of the push plate, and the side, away from the push plate, of the push rod penetrates through the through opening; a plurality of through holes are formed in the push plate; a plurality of protruding blocks are fixedly arranged on the side, away from the through opening, of the push plate. The push rod drives the push plate to be close to or away from the through opening. In conclusion, according to the anti-blocking bent pipe assembly, material cakes in the bent pipe body are effectively removed, meanwhile, retention and blocking of material powder are effectively prevented, and the working stability and production efficiency of a spray drying and collecting system of the lithium battery positive electrode material are greatly improved; and a powerful technical support is provided for continuous production and quality control of the lithium battery positive electrode material.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline transportation, and in particular to a spray drying and collection system for an anti-blocking elbow assembly and a lithium battery positive electrode material. Background Art

[0002] In the production process of lithium battery positive electrode materials, spray drying of precursor slurry is one of the key steps. This process is usually carried out in a spray drying tower, where the slurry is atomized and quickly dried in hot air to form fine particles. Subsequently, these dried precursor particles are transported to the collection tower through the connecting pipe with the air flow for collection. In order to adapt to the needs of the production process layout, the connecting pipe usually contains a bend assembly to guide the air flow and particles to the designated collection point.

[0003] However, in actual production, the heat source output of the spray drying tower is sometimes not enough to completely evaporate the water in the slurry, especially when the feed volume is too large in a short period of time, which will cause the moisture content of the precursor particles to be high. When the high-humidity particles flow through the connecting pipes, especially the elbow components, they tend to adhere to the inner wall of the elbow components due to the slowdown and changes in flow conditions. Over time, these sticky particles gradually accumulate, forming a layer of dirt that is difficult to remove, which may eventually cause the elbow components to become blocked.

[0004] Once the elbow assembly is clogged, it will not only seriously affect the smooth flow of air and reduce drying efficiency, but also force the production line to stop running for manual disassembly and cleaning. This process is time-consuming and labor-intensive, which not only increases maintenance costs, but more importantly, it interrupts the continuity of the production process, significantly slows down the production progress, and reduces overall production efficiency.

[0005] Therefore, there is an urgent need for an anti-clogging bent pipe assembly and a spray drying and collection system for lithium battery positive electrode materials. Summary of the invention

[0006] The purpose of the present invention is to provide a spray drying and collection system for an anti-blocking elbow assembly and a lithium battery positive electrode material in view of the deficiencies in the prior art.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] The first aspect of the present invention is to provide an anti-blocking elbow assembly, comprising: an elbow body and a push plate; wherein:

[0009] A through opening is provided on the side wall of the elbow body;

[0010] The push plate is attached to the inner wall of the elbow body on which the through-hole is opened, a push rod is fixedly arranged on the side of the push plate close to the through-hole, and the push rod is arranged through the through-hole on the side away from the push plate; a plurality of through holes are opened on the push plate; a plurality of protrusions are fixedly arranged on the side of the push plate away from the through-hole;

[0011] Wherein, the push rod drives the push plate to approach or move away from the through opening.

[0012] Preferably, the through opening is opened on a side wall on an outer peripheral side in a bending direction of the curved pipe body.

[0013] Preferably, a fixed pipe is fixedly provided on the side wall of the elbow body, and the fixed pipe is communicated with the through port;

[0014] Wherein, the push rod is slidably arranged in the fixing tube.

[0015] Preferably, an air inlet is opened on the side wall of the fixed tube, and an air inlet pipe is fixedly arranged on the side wall of the fixed tube, and the air inlet pipe is connected with the air inlet;

[0016] There is a gap between the push rod and the fixed pipe, and the gap allows the gas entering from the air inlet pipe to pass through and enter the bent pipe body from the through port.

[0017] Preferably, a sealing ring is fixedly provided on a side of the fixed tube away from the bent tube body, and the sealing ring is provided between the fixed tube and the push rod.

[0018] Preferably, a threaded tube is fixedly provided at one end of the air inlet pipe away from the fixed pipe.

[0019] Preferably, a fixing ring is fixedly provided on the side of the push rod away from the push plate; the push rod outer sleeve is provided with a spring, one side of the spring is fixedly provided on the surface of the fixing ring on the side close to the push rod, and the other side of the spring is fixedly provided on the surface of the fixed tube on the side away from the bent tube body.

[0020] Preferably, a first mounting tube is fixedly provided at one end of the elbow body, and a second mounting tube is fixedly provided at the other end of the elbow body, and inner walls of the first mounting tube and the second mounting tube at one end away from the elbow body are both provided with internal threads.

[0021] Preferably, the shape of the push plate matches the shape of the wall of the elbow body on which the through opening is formed.

[0022] Preferably, a connecting rod is fixedly provided on a side of the fixing ring away from the push rod, and a pulling ring is fixedly provided on a side of the connecting rod away from the fixing ring.

[0023] Preferably, the protrusion is conical, the tip of the protrusion points to the side away from the through hole, and a plurality of the protrusions are arranged between two adjacent through holes.

[0024] The second aspect of the present invention is to provide a spray drying and collection system for lithium battery positive electrode materials, comprising: a spray drying tower, and a collection tower connected to the spray drying tower pipeline through a connecting pipeline; wherein,

[0025] The anti-blocking elbow assembly as described above is arranged at the bend of the connecting pipe.

[0026] The present invention aims at the common problem of elbow assembly blockage in the production process of lithium battery positive electrode materials, and provides an anti-blocking elbow assembly and a spray drying and collection system for lithium battery positive electrode materials. The technical effects are embodied in the following aspects:

[0027] (1) The push plate moves toward the inner peripheral side of the bending direction of the elbow body to effectively disperse the accumulated material agglomerates;

[0028] (2) During the movement of the push plate toward the inner peripheral side of the bending direction of the elbow body, the through hole further enhances the dispersion effect of the material and ensures the smooth flow of the material; the protrusion can break up the larger material agglomerates, significantly improving the efficiency and effect of material removal and reducing the risk of blockage of the elbow body caused by material agglomerates;

[0029] (3) Clean air is delivered to the interior of the elbow body through the air inlet pipe, which not only prevents material powder from entering the fixed pipe and achieves a good sealing effect, but also promotes the material and helps the material to fall smoothly into the first installation pipe, thereby reducing the retention of the material in the elbow body and further preventing the occurrence of blockage;

[0030] (4) The spring can ensure that the push plate automatically resets after pushing away the material, thereby preventing the material from adhering to the push plate. At the same time, the slight impact between the push plate and the inner wall of the elbow body during self-reset can further promote the shedding of material powder, thereby ensuring the internal cleanliness of the elbow body. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of the anti-blocking elbow assembly in the utility model;

[0032] Figure 2 It is a schematic cross-sectional structure diagram of the anti-blocking elbow assembly in the utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the elbow body in the utility model;

[0034] Figure 4This is a schematic diagram of the structure of the push plate in the utility model;

[0035] Figure 5 It is a schematic diagram of the structure of the spray drying and collection system in the utility model;

[0036] The reference numerals include:

[0037] Push plate 1; push rod 2; connecting rod 3; pull ring 4; elbow body 5; fixed pipe 6; fixed ring 7; spring 8; through hole 9; bump 10; air inlet pipe 11; threaded pipe 12; first mounting pipe 13; second mounting pipe 14; through port 15; spray drying tower 16; anti-blocking elbow assembly 17; material receiving tower 18. DETAILED DESCRIPTION

[0038] The specific embodiments of the present invention will be described in detail below.

[0039] Unless otherwise defined, technical or scientific terms used in the claims and the specification shall have the common meanings understood by persons having ordinary skills in the technical field to which the present invention belongs.

[0040] The words "include" or similar words used in the patent application specification and claims of the present invention mean that the items appearing before "include" include the items listed after "include" or their equivalents, and do not exclude other items.

[0041] The numerical values ​​mentioned in the present invention include all numerical values ​​that increase from low to high by one unit, assuming that there are at least two units between any lower value and the higher value. For example, if a component or a physical quantity is said to be from 1 to 100, 10 to 90 is more preferred, and 20 to 80 is the most preferred, it is intended to express that values ​​such as 5 to 95, 14 to 76, 23 to 67, 32 to 58, 41 to 49 are clearly listed in this specification; for values ​​less than 1, 0.0001, 0.001, 0.01 or 0.1 are considered to be more suitable as a unit. The above examples are for illustrative purposes only. In fact, all numerical combinations between the lowest value and the highest value listed are deemed to be clearly listed in this specification in a similar manner.

[0042] Example 1

[0043] like Figure 1-2 As shown, this embodiment provides an anti-blocking elbow assembly, including: Figure 3 The elbow body 5 shown, and Figure 4 The push plate 1 shown; wherein,

[0044] A through opening 15 is provided on the side wall of the outer peripheral side of the bending direction of the curved pipe body 5, and a fixed pipe 6 is fixedly arranged on the side wall of the outer peripheral side of the bending direction of the curved pipe body 5, and the fixed pipe 6 is communicated with the through opening 15; an air inlet is provided on the side wall above the fixed pipe 6 (taking the direction shown in the figure as an example, the same below), and an air inlet pipe 11 is fixedly arranged on the side wall above the fixed pipe 6, and the air inlet pipe 11 is communicated with the air inlet; a threaded pipe 12 is fixedly arranged on the upper end of the air inlet pipe 11;

[0045] A first mounting tube 13 is fixedly disposed at the right front end of the elbow body 5, and a first internal thread is disposed on the inner wall of the right front end of the first mounting tube 13; a second mounting tube 14 is fixedly disposed at the upper left end of the elbow body 5, and a second internal thread is disposed on the inner wall of the upper left end of the second mounting tube 14;

[0046] The push plate 1 has a shape that matches the shape of the wall surface on the outer peripheral side of the bending direction of the bending pipe body 5, and the push plate 1 is attached to the inner wall on the outer peripheral side of the bending direction of the bending pipe body 5;

[0047] A push rod 2 is fixedly arranged on the left rear side of the push plate 1, and the left rear side of the push rod 2 passes through the through port 15 and the fixed tube 6 in sequence, and there is a gap between the push rod 2 and the fixed tube 6, and the gap allows the push rod 2 to slide in the fixed tube 6; at the same time, the gap also allows the gas entering from the intake pipe 11 to pass through and enter the elbow body 5 from the through port 15; for this purpose, a sealing ring is fixedly arranged on the left rear side of the fixed tube 6, and the sealing ring is arranged between the fixed tube 6 and the push rod 2;

[0048] A fixing ring 7 is fixedly provided on the left rear side of the push rod 2, a connecting rod 3 is fixedly provided on the left rear side of the fixing ring 7, and a pull ring 4 is fixedly provided on the left rear side of the connecting rod 3; a spring 8 is provided on the outer sleeve of the push rod 2, the left rear side of the spring 8 is fixedly provided on the surface of the right front side of the fixing ring 7, and the right front side of the spring 8 is fixedly provided on the surface of the left rear side of the fixed tube 6; obviously, the pull ring 4 drives the connecting rod 3, the connecting rod 3 drives the fixing ring 7, the fixing ring 7 drives the push rod 2, and the push rod 2 drives the push plate 1; when the pull ring 4 is driven to the right front side, the push plate 1 is close to the inner peripheral side of the bending direction of the bending pipe body 5, and the spring 8 is compressed; when the spring 8 is stretched, the fixing ring 7 is driven to the left rear side, and the push plate 1 is close to the outer peripheral side of the bending direction of the bending pipe body 5;

[0049] The push plate 1 is provided with a plurality of through holes 9;

[0050] A plurality of protrusions 10 are fixedly disposed on the right front side of the push plate 1 , and the plurality of protrusions 10 are disposed between two adjacent through holes 9 ; the protrusions 10 are conical, and the cone tips of the protrusions 10 point to the right front side.

[0051] Those skilled in the art will understand that the "cone" in the present invention refers to: a geometric body formed by rotating the straight line on which one of the right-angled sides of an assumed right-angled triangle is located 360° around the rotation axis, with the other two sides being the rotation axis; or a geometric body whose spatial geometric shape is similar to the aforementioned geometric body; on this basis, the "cone tip" in the present invention refers to the vertex of the geometric body.

[0052] Example 2

[0053] like Figure 5 As shown, this embodiment provides a spray drying and collection system for lithium battery positive electrode materials, including: a spray drying tower 16, and a collection tower 18 connected to the spray drying tower 16 through a connecting pipeline; wherein,

[0054] An anti-blocking elbow assembly 17 as described in Example 1 is provided at the bend of the connecting pipe.

[0055] Example 3

[0056] This embodiment provides a method for using the anti-blocking elbow assembly as described in Embodiment 1, the steps comprising:

[0057] S0, installing the anti-blocking elbow assembly 17 to the bend of the connecting pipe through the first internal thread at the end of the first mounting pipe 13 and the second internal thread at the end of the second mounting pipe 14;

[0058] Connect the spray drying tower 16 and the material receiving tower 18 through a connecting pipeline;

[0059] If there is material remaining inside the elbow body 5 (generally, the material remains and accumulates on the outer peripheral side of the bending direction of the elbow body 5),

[0060] S1. Connect an air pump to the threaded pipe 12, and clean air enters the air inlet pipe 11 from the threaded pipe 12, and passes through the gap between the push rod 2 and the fixed pipe 6, and the through port 15, and then enters the elbow body 5;

[0061] The driving pull ring 4 makes the push plate 1 close to the inner peripheral side of the bending direction of the elbow body 5, so as to effectively push away the accumulated material agglomerates; at this time, the through hole 9 will further enhance the dispersion effect of the material and ensure the smooth flow of the material; at the same time, the protrusion 10 can break up the larger material agglomerates, which significantly improves the efficiency and effect of material removal and reduces the risk of blockage of the elbow body caused by material agglomerates;

[0062] At this time, the air pressure of the clean air can not only prevent the material powder from entering the fixed tube 6, achieving a good sealing effect, but also push the material on the push plate 1 through the through hole 9, helping the material to fall smoothly into the first mounting tube 13, reducing the retention of the material in the elbow body, and further preventing the occurrence of blockage.

[0063] It is obvious that the spring 8 is in a compressed state at this time;

[0064] S2. When the driving force at the pull ring 4 disappears, the spring 8 stretches and recovers by itself; at this time, the fixed ring 7 drives the push plate 1 to approach the outer peripheral side of the bending direction of the bending pipe body 5. In this process, the force of the spring 8 also causes a slight collision between the push plate 1 and the inner wall of the bending pipe body 5. The material powder attached to the push plate 1 can further fall off and be pushed into the first mounting tube 13 by the clean air to ensure the internal cleanliness of the bending pipe body.

[0065] In summary, the anti-clogging elbow assembly of the present invention can effectively remove material agglomerates inside the elbow body, while effectively preventing the retention and clogging of material powder, greatly improving the working stability and production efficiency of the spray drying and collection system of lithium battery positive electrode materials, and providing strong technical support for the continuous production and quality control of lithium battery positive electrode materials.

[0066] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-blocking elbow assembly, characterized in that: include: A bending pipe body (5) and a push plate (1); wherein a through opening (15) is provided on the side wall of the bending pipe body (5); The push plate (1) is attached to the inner wall of the elbow body (5) on which the through opening (15) is opened; a push rod (2) is fixedly arranged on the side of the push plate (1) close to the through opening (15); the push rod (2) is arranged to penetrate the through opening (15) on the side away from the push plate (1); a plurality of through holes (9) are opened on the push plate (1); a plurality of protrusions (10) are fixedly arranged on the side of the push plate (1) away from the through opening (15); The push rod (2) drives the push plate (1) to move closer to or farther from the through opening (15).

2. The anti-blocking elbow assembly according to claim 1, characterized in that: The through opening (15) is opened on the side wall of the curved pipe body (5) on the outer peripheral side in the bending direction.

3. The anti-blocking elbow assembly according to claim 1, characterized in that: A fixed pipe (6) is fixedly arranged on the side wall of the elbow body (5), and the fixed pipe (6) is communicated with the through port (15); Wherein, the push rod (2) is slidably arranged in the fixed tube (6).

4. The anti-blocking elbow assembly according to claim 3, characterized in that: An air inlet is provided on the side wall of the fixed tube (6), an air inlet pipe (11) is fixedly provided on the side wall of the fixed tube (6), and the air inlet pipe (11) is communicated with the air inlet; There is a gap between the push rod (2) and the fixed tube (6), and the gap allows the gas entering from the air inlet pipe (11) to pass through and enter the bent tube body (5) from the through port (15).

5. The anti-blocking elbow assembly according to claim 4, characterized in that: A sealing ring is fixedly arranged on a side of the fixed tube (6) away from the bent tube body (5), and the sealing ring is arranged between the fixed tube (6) and the push rod (2).

6. The anti-blocking elbow assembly according to claim 3, characterized in that: A fixing ring (7) is fixedly provided on the side of the push rod (2) away from the push plate (1); a spring (8) is provided on the outer sleeve of the push rod (2), one side of the spring (8) is fixedly provided on the surface of the fixing ring (7) on the side close to the push rod (2), and the other side of the spring (8) is fixedly provided on the surface of the fixed tube (6) on the side away from the bent tube body (5).

7. The anti-blocking elbow assembly according to claim 1, characterized in that: A first mounting tube (13) is fixedly provided at one end of the elbow body (5), and a second mounting tube (14) is fixedly provided at the other end of the elbow body (5); internal threads are provided on the inner walls of the first mounting tube (13) and the second mounting tube (14) at the ends away from the elbow body (5).

8. The anti-blocking elbow assembly according to claim 6, characterized in that: A connecting rod (3) is fixedly provided on a side of the fixing ring (7) away from the push rod (2), and a pulling ring (4) is fixedly provided on a side of the connecting rod (3) away from the fixing ring (7).

9. The anti-blocking elbow assembly according to claim 1, characterized in that: The convex block (10) is conical, the conical tip of the convex block (10) points to the side away from the through opening (15), and a plurality of the convex blocks (10) are arranged between two adjacent through holes (9).

10. A spray drying and collection system for lithium battery positive electrode materials, characterized in that: include: A spray drying tower (16), and a material receiving tower (18) connected to the spray drying tower (16) via a connecting pipeline; wherein: An anti-blocking elbow assembly (17) as described in any one of claims 1 to 9 is provided at the bend of the connecting pipe.

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