A blade assembly, a rotor and a crushing, depolymerization and modification device

Abstract

The present application discloses a blade assembly, including a first direction, a second direction and a third direction, which are perpendicular to each other; a clamping structure located at both ends of the third direction, which cooperates with the rotor shaft to limit the displacement of the blade assembly in the third direction and the first direction; and a mounting structure, the end of the mounting structure cooperates with the groove on the rotor shaft to limit the displacement of the blade assembly in the second direction; a ceramic working piece that is clamped and matched with the inside of the mounting structure, one side of the ceramic working piece fits with the mounting structure, and the other side of the ceramic working piece that is perpendicular to the second direction is used as a working surface. The blade assembly provided by the present application can avoid the problem of powder contamination caused by blade wear, thereby improving the purity of the powder, not easily detaching from the rotor shaft, and the blade assembly will not break, thereby increasing its service life. The present application also provides a rotor and a crushing, depolymerization and modification device, which have the same technical effect.

Description

Technical Field

[0001] The present application relates to the technical fields of powder crushing, deagglomeration, modification, etc., and more specifically, to a blade assembly, a rotor, and a crushing, deagglomeration and modification device. Background Art

[0002] Ultrafine dispersion is one of the important ways to improve the quality of micro-powder and nano-particles. However, as the micro-powder particles become ultra-fine and nano-sized, the smaller the particle size, the more atoms on the surface, the higher the surface energy, and the stronger the adsorption effect. According to the principle of minimum energy, the particles will agglomerate with each other, and thus cannot be well dispersed in the polymer matrix. At present, there are many nano-calcium carbonate products on the domestic market. Under the scanning electron microscope, they have indeed reached the nanometer level, but in actual applications, their effects are not better than those of fine calcium carbonate. The reason is that the nano-calcium carbonate has not been surface-modified, the particles are seriously agglomerated, the secondary particle diameter is far from the nanometer level, and the particle size uniformity is poor. It can only be regarded as "nano-calcium carbonate" in name, and it cannot meet the production requirements at all.

[0003] In the prior art, in order to produce powders that meet quality requirements, it is often necessary to completely break up the micro-powder particles through special crushing and depolymerization modification equipment, and then add a modifier to the surface of the micro-powder particles for directional adsorption, so that the surface has charge characteristics. Due to the repulsion of the same charge, the micro-powder particles are not easy to agglomerate, and a good dispersion effect is achieved. At present, the crushing and depolymerization modification equipment in the prior art is often equipped with a rotatable rotor shaft for breaking up the material to facilitate the breaking up of the material. These rotor shafts are often installed in the inner cavity of the crushing and depolymerization modification equipment through a special rotating main shaft. The steel blades are usually installed on the rotor shaft. In the process of breaking up the material, the blades need to continuously impact the material and rub against the material. Due to the low wear resistance of steel, the blades are severely worn during use, and the debris generated by the wear of the blades will cause the powder to be contaminated. Summary of the invention

[0004] To solve the above technical problems, the present application provides a blade assembly that can avoid the powder contamination problem caused by blade wear, thereby improving the purity of the powder. Another object of the present application is to provide a rotor and a pulverizing, depolymerizing and modifying device that use the above blade structure and can also achieve the above effect.

[0005] The technical solutions provided by this application are as follows:

[0006] A blade assembly includes a first direction, a second direction and a third direction, the three directions being perpendicular to each other;

[0007] A clamping structure located at two ends of the third direction, the clamping structure cooperates with the rotor shaft to limit the displacement of the blade assembly in the third direction and the first direction;

[0008] and a mounting structure, an end of which cooperates with a groove on the rotor shaft to limit displacement of the blade assembly in the second direction;

[0009] A ceramic working piece is snap-fitted with the interior of the mounting structure, one side of the ceramic working piece is fitted with the mounting structure, and the other side of the ceramic working piece perpendicular to the second direction is used as a working surface.

[0010] Preferably, the mounting structure comprises a body, a support portion connected to the body, and the support portion is in contact with a side surface of the ceramic workpiece.

[0011] The body is provided with a first mounting groove;

[0012] The ceramic working piece includes a first protrusion, the first protrusion matches with the first mounting groove, and the first protrusion abuts against a flange on the body.

[0013] Preferably, the supporting portion is flush with an end portion of the ceramic working piece in the first direction.

[0014] Preferably, the mounting structure further comprises a second protrusion connected to the body in the first direction, and the second protrusion is arranged opposite to the support portion.

[0015] Preferably, the clamping structure comprises a second mounting groove extending along the second direction, and the second mounting groove crosses the ceramic working piece, the supporting portion and the second protruding portion.

[0016] Preferably, a length of the second protrusion in the first direction is smaller than that of the second mounting groove.

[0017] Preferably, the supporting portion is flush with both ends of the ceramic working piece in the third direction.

[0018] Preferably, in the third direction, the end of the body extends outward relative to both the end of the support portion and the end of the ceramic working piece.

[0019] A rotor is provided with the blade assembly mentioned above.

[0020] A pulverizing, depolymerizing and modifying device uses the above-mentioned rotor.

[0021] The present invention provides a blade assembly, including a first direction, a second direction and a third direction, which are perpendicular to each other; a clamping structure located at both ends of the third direction, the clamping structure cooperates with the rotor shaft to limit the displacement of the blade assembly in the third direction and the first direction; and a mounting structure, the end of the mounting structure cooperates with the groove on the rotor shaft to limit the displacement of the blade assembly in the second direction; a ceramic working piece that is clamped and matched with the inside of the mounting structure, one side of the ceramic working piece fits with the mounting structure, and the other side of the ceramic working piece that is perpendicular to the second direction is used as a working surface. Compared with the prior art, the displacement of the blade assembly in the third direction and the first direction is limited by the clamping structure, and the displacement of the blade assembly in the second direction is limited by the end of the mounting structure cooperating with the groove on the rotor shaft. The first direction, the second direction and the third direction are perpendicular to each other, forming a Cartesian space coordinate system, that is, the freedom of movement of the blade assembly on the plane is limited, ensuring that the blade assembly will not be separated from the rotor shaft due to centrifugal force during operation. On the other hand, when the rotor shaft rotates, it continues to rotate in one direction, and the powder collides and rubs against one surface of the blade assembly. Therefore, the side surface perpendicular to the second direction of the ceramic working piece is used as the working surface. The ceramic working piece is made of ceramic material and has good hardness and wear resistance. Compared with the steel blades used in the prior art, it is not easy to produce steel material fragments when the powder collides with it, that is, the powder will not be mixed with steel material fragments, thereby improving the purity of the powder. In order to solve the problem of fracture of the ceramic working piece due to brittleness, while improving the purity of the powder, it is ensured that the ceramic working piece is not easy to break. Specifically, the ceramic working piece is engaged with the internal clamping of the mounting structure, and the mounting structure is used as an auxiliary support for the ceramic working piece. The mounting structure is in rigid contact with the rotor shaft, which reduces the stress on the ceramic working piece during operation, avoids the ceramic working piece from breaking, deforming and failing, and also avoids the problem of impure powder due to the failure of the blade assembly. Therefore, compared with the prior art, the blade assembly provided by the present application does not allow the produced powder to be mixed with steel material fragments, thereby improving the purity of the powder, and is not easy to detach from the rotor shaft, and the blade assembly will not break, thereby improving its service life. The present application also provides a rotor having the same technical effect. The present application also provides a pulverizing, depolymerizing and modifying device having the same technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1A schematic diagram of the structure of a blade assembly in a first direction, a second direction and a third direction provided in an embodiment of the present invention;

[0024] Figure 2 A schematic structural diagram of a blade assembly provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the explosion structure of a blade assembly provided by an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a structure in which a blade assembly provided by an embodiment of the present invention is installed on a rotor shaft;

[0027] Explanation of the accompanying drawings: 1. First direction; 2. Second direction; 3. Third direction; 4. Clip-on structure; 6. Mounting structure; 7. Ceramic working piece; 8. Working surface; 41. Second mounting groove; 61. Main body; 62. Support portion; 63. Second protrusion; 611. First mounting groove; 71. First protrusion. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0029] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application 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 should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0033] Please Figures 1 to 4As shown, a blade assembly provided by the present invention includes a first direction 1, a second direction 2 and a third direction 3, which are perpendicular to each other; a clamping structure 4 located at both ends of the third direction 3, the clamping structure 4 cooperates with the rotor shaft to limit the displacement of the blade assembly in the third direction 3 and the first direction 1; and a mounting structure 6, the end of the mounting structure 6 cooperates with the groove on the rotor shaft to limit the displacement of the blade assembly in the second direction 2; a ceramic working piece 7 clamped and matched with the inside of the mounting structure 6, one side of the ceramic working piece 7 is fitted with the mounting structure 6, and the other side of the ceramic working piece 7 perpendicular to the second direction 2 is used as a working surface 8. Compared with the prior art, the displacement of the blade assembly in the third direction 3 and the first direction 1 is limited by the clamping structure 4, and the displacement of the blade assembly in the second direction 2 is limited by the end of the mounting structure 6 and the groove on the rotor shaft. The first direction 1, the second direction 2 and the third direction 3 are perpendicular to each other, forming a Cartesian space coordinate system, that is, the freedom of movement of the blade assembly on the plane is limited, ensuring that the blade assembly will not be separated from the rotor shaft due to centrifugal force during operation. On the other hand, when the rotor shaft rotates, it continues to rotate in one direction, and the powder collides and rubs against one surface of the blade assembly. Therefore, the side surface perpendicular to the second direction 2 of the ceramic working piece 7 is used as the working surface 8. The ceramic working piece 7 is made of ceramic material and has good hardness and wear resistance. Compared with the steel blades used in the prior art, it is not easy to produce steel material fragments when the powder collides with it, that is, the powder will not be mixed with steel material fragments, thereby improving the purity of the powder. In order to solve the problem of fracture of the ceramic working piece 7 caused by brittleness, while improving the purity of the powder, it is ensured that the ceramic working piece 7 is not easy to break. Specifically, the ceramic working piece 7 is engaged with the internal clamping of the mounting structure 6. The mounting structure 6 serves as an auxiliary support for the ceramic working piece 7. The mounting structure 6 is in rigid contact with the rotor shaft, which reduces the stress on the ceramic working piece 7 during operation, avoids the ceramic working piece 7 from breaking, deforming and failing, and also avoids the problem of impure powder due to failure of the blade assembly. Therefore, compared with the prior art, the blade assembly provided by the present application does not contain steel particles in the produced powder, thus improving the purity of the powder, and is not easy to detach from the rotor shaft, and the blade assembly does not break, thus improving its service life. The present application also provides a rotor with the same technical effect. The present application also provides a comminution, depolymerization and modification device with the same technical effect.

[0034] Among them, the mounting structure 6 includes a main body 61, a supporting part 62 connected to the main body 61, the supporting part 62 is fitted with a side of the ceramic working piece 7, a first mounting groove 611 is provided on the main body 61, and the ceramic working piece 7 includes a first protrusion 71, the first protrusion 71 cooperates with the first mounting groove 611, and the first protrusion 71 abuts against the flange on the main body 61. By cooperating with the first mounting groove 611 and the first protrusion 71, the freedom of the ceramic working piece 7 in the positive or negative direction of the second direction 2 is limited, so that the ceramic working piece 7 cannot move freely in the second direction 2; and by the first protrusion 71 abutting against the flange on the main body 61, the other side of the first protrusion 71 abuts against the bottom of the first mounting groove 611, the freedom of the ceramic working piece 7 in the positive or negative direction of the first direction 1 is limited, so that the ceramic working piece 7 cannot move freely in the first direction 1, and the clamping structures 4 are respectively provided at both ends of the third direction 3, which respectively limit the freedom of the ceramic working piece 7 in the positive or negative direction of the third direction 3. It can be seen that the freedom of movement along the axes of the first direction 1, the second direction 2 and the third direction 3 are all limited, and the ceramic working piece 7 is not easy to detach from the support portion 62.

[0035] On the other hand, the rotor shaft rotates, and the powder particles collide with the working surface 8. If there is no support portion 62, the powder particles continue to apply force to the ceramic working piece 7, and the ceramic working piece 7 is in a suspended state during operation, and the ceramic working piece 7 swings in the second direction 2. Once the fatigue limit of the ceramic working piece 7 is reached after long-term operation, the ceramic working piece 7 breaks. The present application sets a support portion 62, and the support portion 62 always provides auxiliary support for the ceramic working piece 7, reduces the swing amplitude of the ceramic working piece 7 in the second direction 2, thereby avoiding the ceramic working piece 7 from breaking and increasing the service life of the blade assembly.

[0036] Preferably, the support portion 62 is flush with the end of the ceramic work piece 7 in the first direction 1, and the support portion 62 always provides auxiliary support to the ceramic work piece 7 in the first direction 1. If the support portion 62 extends outward in the first direction 1 compared to the end of the ceramic work piece, powder particles are likely to collide with the support portion 62. The support portion 62 is made of steel, and steel debris is likely to cause low powder purity. If the length of the ceramic work piece 7 in the first direction 1 is greater than the length of the support portion 62, the extended portion of the ceramic work piece 7 has no auxiliary support and is prone to breakage. Therefore, making the support portion 62 flush with the end of the ceramic work piece 7 in the first direction 1 is based on a comprehensive consideration of improving powder purity and preventing the ceramic work piece 7 from breaking.

[0037] The mounting structure 6 further includes a second protrusion 63 connected to the body 61 in the first direction 1, and the second protrusion 63 is arranged opposite to the support portion 62. The second protrusion 63 is arranged to cooperate with the support portion 62 without affecting the operation of the working surface 8 of the ceramic working piece 7, and to provide support force for the ceramic working piece 7. The width of the first protrusion 71 to the position corresponding to the working surface 8 becomes smaller, and the connection between the first protrusion 71 and the working surface 8 is prone to fracture. The second protrusion 63 is arranged to avoid fracture at the root of the working surface 8 and to increase the service life of the blade assembly.

[0038] Furthermore, the clamping structure 4 includes a second mounting groove 41 extending along the second direction 2, and the second mounting groove 41 crosses the ceramic working piece 7, the support portion 62, and the second protrusion 63. This arrangement enables the protrusion on the rotor shaft to cooperate with the second mounting groove 41 and contact with the ceramic working piece 7, the support portion 62, and the second protrusion 63 at the same time, so that the ceramic working piece 7 and the support portion 62 are not easily separated from the rotor shaft.

[0039] Among them, the length of the second protrusion 63 in the first direction 1 is smaller than the second installation groove 41. This structure is intended to maximize the effective working area of ​​the working surface 8 on the ceramic working piece 7 while preventing the working surface 8 of the ceramic working piece 7 from breaking easily at the root, thereby improving the working efficiency of the blade assembly.

[0040] Furthermore, the support portion 62 is flush with both ends of the ceramic workpiece 7 in the third direction 3. If the support portion 62 extends outward in the third direction 3 compared to the end of the ceramic workpiece, the powder particles are likely to collide with the support portion 62. The support portion 62 is made of steel, and steel debris is likely to cause low purity of the powder; if the length of the ceramic workpiece 7 in the third direction 3 is greater than the length of the support portion 62, the extended portion of the ceramic workpiece 7 has no auxiliary support and is prone to breakage. Therefore, the support portion 62 is flush with the end of the ceramic workpiece 7 in the third direction 3, which is based on the comprehensive consideration of improving the purity of the powder and preventing the ceramic workpiece 7 from breaking easily.

[0041] In the third direction 3, the end of the body 61 extends outward relative to the end of the support portion 62 and the end of the ceramic workpiece 7. That is, the end of the body 61 is higher than the end of the support portion 62 and the end of the ceramic workpiece 7, which facilitates the installation of the ceramic workpiece 7.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A blade assembly, characterized in that: It includes a first direction, a second direction and a third direction, which are perpendicular to each other; a clamping structure located at both ends of the third direction, the clamping structure cooperating with the rotor shaft to limit the displacement of the blade assembly in the third direction and the first direction; and a mounting structure, wherein an end portion of the mounting structure cooperates with a groove on the rotor shaft to limit displacement of the blade assembly in the second direction; a ceramic working piece that is engaged with the interior of the mounting structure, wherein one side of the ceramic working piece is in contact with the mounting structure, and the other side of the ceramic working piece that is perpendicular to the second direction serves as a working surface; The mounting structure includes a body, a support portion connected to the body, and the support portion is in contact with a side surface of the ceramic workpiece. The body is provided with a first mounting groove; The ceramic working piece includes a first protrusion, the first protrusion cooperates with the first mounting groove, and the first protrusion abuts against the flange on the body.

2. The blade assembly according to claim 1, wherein The supporting portion is flush with an end portion of the ceramic working piece in the first direction.

3. The blade assembly according to claim 2, wherein: The mounting structure further includes a second protrusion connected to the body in the first direction, and the second protrusion is arranged opposite to the support portion.

4. The blade assembly according to claim 3, wherein: The clamping structure includes a second mounting groove extending along the second direction, and the second mounting groove crosses the ceramic working piece, the supporting portion, and the second protruding portion.

5. The blade assembly according to claim 4, wherein: The length of the second protrusion in the first direction is smaller than that of the second installation groove.

6. The blade assembly according to any one of claims 2 to 5, characterized in that: The supporting portion is flush with both ends of the ceramic working piece in the third direction.

7. The blade assembly according to claim 6, wherein: In the third direction, the body end extends outward relative to both the support end and the ceramic working piece end.

8. A rotor, characterized in that: A blade assembly according to any one of claims 1 to 7 is provided.

9. A crushing, depolymerization and modification device, characterized in that: The rotor according to claim 8 is used.

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