Powder mixing and grinding structures, components and equipment

Abstract

The present invention discloses a powder stirring and grinding structure, assembly and equipment, wherein the powder stirring and grinding structure includes a stirring disk, the stirring disk includes a first surface and a second surface arranged opposite to each other, a sleeve portion is provided at the center position of the first surface, the sleeve portion is used for a rotating shaft to pass through and can be driven by the rotating shaft to rotate, a convex portion is convexly provided on the first surface, the convex portion is used to collide with the flowing powder when the stirring disk is driven to rotate, a groove is also provided on the first surface, and a plurality of leakage holes that pass through the first surface and the second surface are distributed on the stirring disk; the two stirring disks can be spliced ​​with each other, and the part of the convex portion of any one of the two stirring disks away from the first surface is configured to be inserted into the groove of the other of the two stirring disks. The above stirring disk has high efficiency in stirring the powder, and the convex portion has good effect in grinding the powder, which is beneficial to improving the production quality and production efficiency of the powder.

Description

Technical Field

[0001] The present invention relates to the technical field of powder stirring and grinding, and in particular to a powder stirring and grinding structure, components and equipment. Background Art

[0002] Ceramic powder used in multilayer ceramic capacitors (MLCCs) requires grinding and dispersion to create a uniform slurry. Existing preparation methods typically involve ball milling and sand milling. Existing sand mills primarily use pin-type abrasives or disc-type abrasives. Pin-type abrasives are more effective at grinding powder but less efficient at stirring, resulting in lower overall production efficiency. Disc-type abrasives, on the other hand, offer greater powder stirring efficiency but poor grinding performance, impacting overall slurry production quality. Summary of the Invention

[0003] The purpose of the present invention is to provide a powder stirring and grinding structure, assembly and equipment with high stirring efficiency and good grinding effect, which is conducive to improving the production quality and production efficiency of powder.

[0004] In order to achieve the above-mentioned purpose, the present invention discloses a powder stirring and grinding structure for powder stirring and grinding equipment, which includes a stirring disk, the stirring disk including a first surface and a second surface arranged opposite to each other, a sleeve portion is provided at the center position of the first surface, the sleeve portion is used for a rotating shaft to pass through and can be driven to rotate by the rotating shaft, a convex portion is convexly provided on the first surface, the convex portion is used to collide with the flowing powder when the stirring disk is driven to rotate, a groove is also provided on the first surface, and a plurality of leakage holes that pass through the first surface and the second surface are distributed on the stirring disk; the two stirring disks can be spliced ​​with each other, and the part of the convex portion of any one of the two stirring disks away from the first surface is configured to be inserted into the groove of the other one of the two stirring disks.

[0005] Optionally, at least two protrusions and at least two grooves are provided on the first surface, and the at least two protrusions and at least two grooves are located outside the sleeve portion and are alternately and equidistantly arranged along the circumference of the stirring disk.

[0006] Optionally, an annular portion is protruded from the edge of at least one of the first surface and the second surface.

[0007] In order to achieve the above-mentioned purpose, the present invention also discloses a powder stirring and grinding assembly for a powder stirring and grinding device, which includes at least two stirring discs and a rotating shaft as described above, the rotating shaft is passed through the sleeve portion of each stirring disc and can drive each stirring disc to rotate, the rotating shaft is configured to be connected to an external driving mechanism, and adjacent stirring discs are arranged at intervals.

[0008] Optionally, the sleeve portions of the two mutually spliced ​​stirring discs have their sides facing each other abutting against each other.

[0009] Optionally, the powder stirring and grinding assembly includes at least two groups of stirring discs, each group of stirring discs includes two stirring discs spliced ​​together, and two adjacent groups of stirring discs are connected by a sleeve, and the rotating shaft passes through the sleeve.

[0010] In order to achieve the above-mentioned purpose, the present invention also discloses a powder stirring and grinding device, which is used to process a first powder into a second powder, and the particle size of the second powder is smaller than the particle size of the first powder. The device comprises: a container, a powder stirring and grinding assembly and a driving mechanism, the container is configured to receive and accommodate the first powder; the powder stirring and grinding assembly is as described above; the driving mechanism is connected to the rotating shaft of the powder stirring and grinding assembly, and the driving mechanism is used to drive the powder stirring and grinding assembly to rotate to drive the first powder to flow in the container and to crush and disperse the first powder to form the second powder.

[0011] Optionally, a plurality of freely movable grinding balls are placed in the container. When the powder stirring and grinding assembly rotates to drive the first powder to flow, the grinding balls are configured to move in the container to disperse and crush the flowing first powder.

[0012] Optionally, the powder mixing and grinding equipment also includes a storage container, which includes a first connecting end and a second connecting end, the first connecting end is connected to the input end of the container, the first connecting end is used to input the first powder into the container, and the second connecting end is connected to the output end of the container, and the second connecting end is used to receive the second powder output by the container.

[0013] Optionally, the container and / or the storage container is provided with a particle size detector, and the particle size detector is used to detect the particle size of the first powder and / or the second powder.

[0014] The present invention includes a stirring disk, a sleeve portion is provided at the center position of the first surface of the stirring disk, the sleeve portion is used for a rotating shaft to pass through and can be driven by the rotating shaft to rotate, thereby driving the stirring disk to rotate and stir the powder, a convex portion is convexly provided on the first surface, and the convex portion collides with the flowing powder when the stirring disk stirs the powder to disperse and crush the powder, the above stirring disk has high efficiency in stirring the powder, and the convex portion has a good effect of grinding the powder, which is beneficial to improving the production quality and production efficiency of the powder; moreover, a number of leakage holes are distributed on the stirring disk to improve the fluidity of the powder, further improving the efficiency and effect of the stirring of the stirring disk and the grinding of the powder by the convex portion; furthermore, a groove is provided on the first surface to enable the two stirring disks to be spliced ​​with each other, and the part of the convex portion of any one of the two stirring disks away from the first surface is configured to be inserted into the groove of the other of the two stirring disks, so that the structure of the two stirring disks after splicing is more stable and the overall space occupied is less. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural diagram of the powder stirring and grinding structure according to an embodiment of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the powder stirring and grinding assembly according to an embodiment of the present invention.

[0017] Figure 3 This is an exploded structural diagram of the powder stirring and grinding assembly according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the powder stirring and grinding equipment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the embodiments and the accompanying drawings.

[0020] See also Figures 1 to 4 The present invention discloses a powder stirring and grinding structure 100 for a powder stirring and grinding device 300, which includes a stirring disk 1, and the stirring disk 1 includes a first surface 11 and a second surface 12 arranged opposite to each other. A sleeve portion 111 is provided at the center of the first surface 11, and the sleeve portion 111 is used for a rotating shaft 21 to pass through and can be driven to rotate by the rotating shaft 21. A convex portion 112 is convexly provided on the first surface 11, and the convex portion 112 is used to impact the flowing powder 400 when the stirring disk 1 is driven to rotate. A groove 113 is also provided on the first surface 11, and a plurality of leakage holes 114 are distributed on the stirring disk 1 that pass through the first surface 11 and the second surface 12; the two stirring disks 1 can be spliced ​​with each other, and the portion of the convex portion 112 of any one of the two stirring disks 1 away from the first surface 11 is configured to be inserted into the groove 113 of the other of the two stirring disks 1.

[0021] The present invention includes a stirring disk 1, a sleeve portion 111 is provided at the center of the first surface 11 of the stirring disk 1, the sleeve portion 111 is used for the rotation shaft 21 to pass through and can be driven by the rotation shaft 21 to rotate, thereby driving the stirring disk 1 to rotate and stir the powder 400, the first surface 11 is convexly provided with a convex portion 112, the convex portion 112 collides with the flowing powder 400 when the stirring disk 1 stirs the powder 400 to disperse and crush the powder 400, the stirring disk 1 has a high efficiency in stirring the powder 400, and the convex portion 112 has a good effect of grinding the powder 400, which is conducive to improving the production of the powder 400 quality and production efficiency; moreover, a number of through-holes 114 are distributed on the stirring disk 1 to improve the fluidity of the powder 400, further improving the efficiency and effect of the stirring of the stirring disk 1 and the grinding of the powder 400 by the convex portion 112; furthermore, a groove 113 is provided on the first surface 11 to enable the two stirring disks 1 to be spliced ​​with each other, and the part of the convex portion 112 of any one of the two stirring disks 1 away from the first surface 11 is configured to be inserted into the groove 113 of the other of the two stirring disks 1, so that the structure of the two stirring disks 1 after splicing is more stable and the overall space occupied is less.

[0022] See Figures 1 to 3 At least two protrusions 112 and at least two grooves 113 are provided on the first surface 11. The at least two protrusions 112 and the at least two grooves 113 are located on the outside of the sleeve portion 111 and are alternately and equidistantly arranged along the circumference of the stirring disk 1, which is conducive to the part of the protrusion 112 of any one of the two stirring disks 1 away from the first surface 11 being accurately inserted into the groove 113 of the other when splicing.

[0023] Specifically, in this embodiment, the first surface 11 is provided with two grooves 113 and two protrusions 112, and the two grooves 113 and the two protrusions 112 are symmetrically arranged on both sides of the sleeve portion 111, and the arrangement direction of the two protrusions 112 and the arrangement direction of the two grooves 113 are perpendicular to each other, but are not limited to this.

[0024] Specifically, in this embodiment, the longitudinal section of the protrusion 112 is rectangular, the groove 113 passes through the first surface 11 and the second surface 12 of the stirring plate 1, and the width of the groove 113 is greater than the lateral dimension of the protrusion 112, which is conducive to the powder 400 to flexibly flow into or out of the groove 113 and be fully ground by the protrusion 112, but is not limited to this.

[0025] See Figures 1 to 3 An annular portion 13 is protruded from the edge of at least one of the first surface 11 and the second surface 12 , which is beneficial for thickening and reinforcing the edge of the stirring disk 1 to protect the stirring disk 1 .

[0026] Specifically, in this embodiment, an annular portion 13 is provided on the edges of the first surface 11 and the second surface 12 , respectively. The two annular portions 13 are connected to each other and extend along the outer side surface of the stirring disk 1 , but the present invention is not limited thereto.

[0027] See 1 to Figure 3 The present invention also discloses a powder stirring and grinding assembly 200 for a powder stirring and grinding device 300, which includes at least two stirring discs 1 and a rotating shaft 21 as described above. The rotating shaft 21 is passed through the sleeve portion 111 of each stirring disc 1 and can drive each stirring disc 1 to rotate. The rotating shaft 21 is configured to be connected to an external driving mechanism, and adjacent stirring discs 1 are arranged at intervals.

[0028] The rotating shaft 21 in the powder stirring and grinding assembly 200 of the present invention drives the stirring disk 1 to rotate and stir the powder 400 under the drive of an external driving mechanism. The convex portion 112 set on the first surface 11 of the stirring disk 1 can hit the flowing powder 400 to break and disperse the powder 400. While the stirring disk 1 stirs the powder 400, the convex portion 112 hits the powder 400, the efficiency of stirring the powder 400 is high, and the effect of grinding the powder 400 is good, which is conducive to improving the production quality and production efficiency of the powder 400; and the leakage hole 114 set on the stirring disk 1 is conducive to improving the fluidity of the powder 400, further improving the efficiency and effect of stirring and grinding the powder 400.

[0029] Specifically, in this embodiment, the two stirring plates 1 are spliced ​​together, and the portion of the protrusion 112 of any one of the two stirring plates 1 away from the first surface 11 is configured to be inserted into the groove 113 of the other one of the two stirring plates 1, so that the overall structure is more stable and occupies less space, but is not limited to this.

[0030] Specifically, in this embodiment, the main bodies of the two stirring discs 1 are spaced apart to form a gap between the stirring discs 1 , so that the powder 400 can enter between the adjacent stirring discs 1 through the gap and then be crushed and dispersed by the protrusions 112 .

[0031] See 1 to Figure 3 The sleeve portions 111 of the two mutually spliced ​​stirring discs 1 are in contact with each other on their facing sides, which is conducive to forming a gap between the two mutually spliced ​​stirring discs 1 and improving the stirring and grinding effect.

[0032] Specifically, in this embodiment, the sleeve portion 111 is in a truncated cone shape and is provided with a first plug-in hole 1111 that passes through the stirring disk 1. The longitudinal section of the rotating shaft 21 is square. The shape and size of the first plug-in hole 1111 are adapted to the rotating shaft 21. The rotating shaft 21 is inserted into the first plug-in hole 1111 of each stirring disk 1, and can then drive the stirring disk 1 to rotate under the drive of an external driving mechanism, but is not limited to this.

[0033] See Figures 1 to 3The powder mixing and grinding assembly 200 includes at least two sets of mixing discs 10. Each set of mixing discs 10 includes two mutually joined mixing discs 1. Adjacent sets of mixing discs 10 are connected by sleeves 22, through which the rotating shaft 21 passes. The provision of the sleeves 22 can separate the adjacent sets of mixing discs 10 so that they are evenly arranged on the rotating shaft 21, thereby improving the efficiency of the powder mixing and grinding assembly 200 in mixing the powder 400.

[0034] Specifically, in this embodiment, a sleeve 22 is provided between two adjacent groups of stirring discs 10 , and two end surfaces of the sleeve 22 respectively abut against the second surfaces 12 of the stirring discs 1 close to the sleeve 22 in the two groups of stirring discs 10 , but the present invention is not limited thereto.

[0035] Specifically, in this embodiment, the sleeve 22 is cylindrical and is provided with a penetrating second plug hole 221. The longitudinal section of the rotating shaft 21 is square. The shape and size of the second plug hole 221 are adapted to the rotating shaft 21. The rotating shaft 21 passes through the first plug hole 1111 of the two spliced ​​stirring plates 1 and the second plug hole 221 of the sleeve 22 in sequence, but is not limited to this.

[0036] See Figures 1 to 4 The present invention also discloses a powder stirring and grinding device 300, which is used to process a first powder 401 into a second powder 402, wherein the particle size of the second powder 402 is smaller than that of the first powder 401. The device includes a container 31, a powder stirring and grinding assembly 200 and a driving mechanism 32. The container 31 is configured to receive and accommodate the first powder 401; the powder stirring and grinding assembly 200 is as described above; the driving mechanism 32 is connected to the rotating shaft 21 of the powder stirring and grinding assembly 200, and the driving mechanism 32 is used to drive the powder stirring and grinding assembly 200 to rotate to drive the first powder 401 to flow in the container 31 and to crush and disperse the first powder 401 to form the second powder 402.

[0037] The powder stirring and grinding assembly 200 of the present invention rotates under the drive of the driving mechanism 32 so that the stirring disk 1 in the powder stirring and grinding assembly 200 stirs the first powder 401. The protrusion 112 set on the first surface 11 of the stirring disk 1 can collide with the flowing first powder 401 to crush and disperse the first powder 401. The stirring disk 1 has high efficiency in stirring the first powder 401, and the protrusion 112 has good effect in grinding the first powder 401, which is beneficial to improving the production quality and production efficiency of the powder 400; and the leakage hole 114 set on the stirring disk 1 can improve the fluidity of the first powder 401 in the container 31 so that the first powder 401 is ground more fully, and the particle size of the formed second powder 402 is uniform.

[0038] Specifically, in this embodiment, a plurality of groups of stirring discs 10 are arranged at intervals on the rotating shaft 21 of the powder stirring and grinding assembly 200, and the arrangement of each group of stirring discs 10 is uniform, the stirring efficiency of the first powder 401 is high, and the grinding effect of the first powder 401 is good. Moreover, the part of the protrusion 112 of any one of the mutually spliced ​​stirring discs 1 away from the first surface 11 is configured to be inserted into the groove 113 of the other of the two stirring discs 1, so that the structure of the mutually spliced ​​stirring discs 1 is stable, and the powder stirring and grinding assembly 200 as a whole occupies less space, but is not limited to this.

[0039] Specifically, in this embodiment, the first powder 401 and the second powder 402 are ceramic powders used in multilayer ceramic capacitors (MLCCs), but are not limited thereto. The first powder 401 and the second powder 402 may also be coatings or electronic pastes.

[0040] Specifically, in this embodiment, the driving mechanism 32 includes a rotation driver 321, a first rotating member 322, a second rotating member 323 and a transmission belt 324 wound between the first rotating member 322 and the second rotating member 323. The first rotating member 322 is installed at the output end of the rotation driver 321, and the second rotating member 323 is installed at the end of the rotating shaft 21 away from the stirring disk 1. The first rotating member 322 drives the second rotating member 323 and the rotating shaft 21 to rotate under the drive of the rotation driver 321.

[0041] See Figure 4 A plurality of freely movable grinding balls 33 are also placed within the container 31. When the powder stirring and grinding assembly 200 rotates to drive the flow of the first powder 401, the grinding balls 33 are configured to move within the container 31 to disperse and break up the flowing first powder 401. The placement of the grinding balls 33 facilitates improving the efficiency and effectiveness of stirring, deagglomerating, dispersing, and breaking up the first powder 401, resulting in a more concentrated particle size distribution of the formed second powder 402.

[0042] Specifically, in this embodiment, the grinding balls 33 include zirconia balls, but are not limited thereto. For example, the grinding balls 33 may also include glass balls, metal balls, and / or resin balls.

[0043] See Figure 4 The powder mixing and grinding equipment 300 also includes a storage container 34, which includes a first connection end 341 and a second connection end 342. The first connection end 341 is connected to the input end of the container 31, and the first connection end 341 is used to input the first powder 401 into the container 31. The second connection end 342 is connected to the output end of the container 31, and the second connection end 342 is used to receive the second powder 402 output by the container 31.

[0044] Specifically, in this embodiment, the first connection end 341 is connected to the input end of the container 31 through the first connection tube 3411, and the input end of the container 31 is set on the side of the bottom of the container 31. The second connection end 342 is connected to the output end of the container 31 through the second connection tube 3421, and the output end of the container 31 is set on the top surface of the container 31, but is not limited to this.

[0045] Optionally, the container 31 and / or the storage container 34 is provided with a particle size detector (not shown), which is used to detect the particle size of the first powder 401 and / or the second powder 402, so as to detect the progress of stirring and grinding of the first powder 401 and accurately control the time of stirring and grinding.

[0046] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope of the present invention.

Claims

1. A powder stirring and grinding structure for a powder stirring and grinding device, characterized in that: include: A stirring disc, the stirring disc comprising a first surface and a second surface arranged opposite to each other, a sleeve portion being provided at the center of the first surface for allowing a rotating shaft to pass through and being driven to rotate by the rotating shaft, a convex portion being provided on the first surface for impacting the flowing powder when the stirring disc is driven to rotate, a groove being provided on the first surface, and a plurality of leakage holes being distributed on the stirring disc that penetrate the first surface and the second surface; The two stirring plates can be connected to each other, and a portion of the protrusion of one of the two stirring plates away from the first surface is configured to be inserted into the groove of the other of the two stirring plates; The sleeve portions of the two mutually spliced ​​stirring discs are in contact with each other on their facing sides; The groove runs through the first surface and the second surface of the stirring plate, and the width of the groove is greater than the transverse dimension of the protrusion.

2. The powder stirring and grinding structure according to claim 1, characterized in that: At least two protrusions and at least two grooves are provided on the first surface. The at least two protrusions and at least two grooves are located outside the sleeve portion and are alternately and equidistantly arranged along the circumference of the stirring disk.

3. The powder stirring and grinding structure according to claim 1, characterized in that: An annular portion is protruded from an edge of at least one of the first surface and the second surface.

4. A powder stirring and grinding assembly for a powder stirring and grinding device, characterized in that: It comprises at least two stirring discs and rotating shafts according to any one of claims 1 to 3, wherein the rotating shaft is passed through the sleeve portion of each stirring disc and can drive each stirring disc to rotate, and the rotating shaft is configured to be connected to an external driving mechanism, and adjacent stirring discs are arranged at intervals.

5. The powder stirring and grinding assembly according to claim 4, characterized in that: The powder stirring and grinding assembly includes at least two groups of stirring discs, each group of stirring discs includes two stirring discs spliced ​​together, and two adjacent groups of stirring discs are connected by a sleeve, and the rotating shaft passes through the sleeve.

6. A powder stirring and grinding device for processing a first powder into a second powder, wherein the particle size of the second powder is smaller than that of the first powder, characterized in that: include: a container configured to receive and contain the first powder; A powder stirring and grinding assembly, wherein the powder stirring and grinding assembly is as described in claim 4 or 5; A driving mechanism is connected to the rotating shaft of the powder stirring and grinding assembly, and is used to drive the powder stirring and grinding assembly to rotate to drive the first powder to flow in the container and to crush and disperse the first powder to form the second powder.

7. The powder stirring and grinding equipment according to claim 6, characterized in that: A plurality of freely movable grinding balls are also placed in the container. When the powder stirring and grinding assembly rotates to drive the first powder to flow, the grinding balls are configured to move in the container to disperse and crush the flowing first powder.

8. The powder stirring and grinding equipment according to claim 6, characterized in that: It also includes a storage container, which includes a first connecting end and a second connecting end. The first connecting end is connected to the input end of the container and is used to input the first powder into the container. The second connecting end is connected to the output end of the container and is used to receive the second powder output by the container.

9. The powder stirring and grinding equipment according to claim 8, characterized in that: The container and / or the storage container is provided with a particle size detector, and the particle size detector is used to detect the particle size of the first powder material and / or the second powder material.

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