grading wheel

Abstract

The application relates to a grading wheel, which comprises a fixed ring, a grading ceramic and a sleeve pipe. The fixed ring is a circular ring. The grading ceramic is arranged on the outer edge of the fixed ring and is uniformly arranged along the circumference of the fixed ring. Each grading ceramic is provided with a through hole. The sleeve pipe is arranged in the through hole of the grading ceramic and is locked in the through hole by a fastener. When the grading wheel rotates, the rotation force generated by the rotation drives the fixed ring and the grading ceramic to rotate to grade the material, and the torque generated by the rotation force is borne by the sleeve pipe. The grading wheel provided by the application solves the problem that the existing grading wheel structure bears the torque and force by the ceramic, and effectively prolongs the service life of the grading wheel.

Description

Technical Field

[0001] This application relates to the field of grading machine technology, and more particularly to a grading wheel. Background Technology

[0002] The main function of the classifying wheel is to separate coarse and fine particles in materials through the powerful centrifugal force generated by its high-speed rotation. During operation, the motor drives the classifying wheel to rotate at high speed in the classifying shell, generating a strong centrifugal force. The air-powder mixture entering the classifier first enters the inside of the classifying wheel. Under the action of centrifugal force, large or heavy particles are thrown to the outer periphery of the classifying wheel to the side wall of the classifier, and then fall naturally for further processing or collection; while small or light materials are affected by a smaller centrifugal force and remain suspended inside the classifying wheel, thus undergoing classification.

[0003] Existing graded wheel structures can be broadly classified into two types:

[0004] One type is an integrated grading wheel, which is very expensive. During the sintering process, stress is concentrated at each corner. When it is working, the rotational power of the motor shaft is directly transmitted to the ceramic grading wheel, and the ceramic bears all the torque. This can easily cause cracking during operation, resulting in safety issues.

[0005] Another type is the split-type grading wheel, which has improved cost and cracking risk compared to the one-piece grading wheel. However, since the ceramic body is a complete circle, there is still the problem of stress concentration during the sintering process. The torque generated during the working process is borne by the ceramic body. Once cracking occurs, the entire ceramic body can no longer be used. Cost and safety still need to be improved.

[0006] Therefore, a new technical solution is needed in this field to solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this application is to provide a grading wheel that solves the problem of existing grading wheel structures relying on ceramics to bear torque and force, thereby effectively improving the service life of the grading wheel.

[0008] Therefore, this application provides a grading wheel, comprising: a fixed ring, the fixed ring being circular; grading ceramics, disposed on the outer edge of the fixed ring and evenly distributed in a plurality of them along the circumference of the fixed ring, each of the grading ceramics having a through hole; and a sleeve disposed within the through hole of the grading ceramics and locked within the through hole by fasteners; wherein, when the grading wheel rotates for grading, the rotational force generated by the rotation drives the fixed ring and the grading ceramics to rotate, thereby grading the materials, and the torque generated by the rotational force is borne by the sleeve.

[0009] In one possible implementation, the graded ceramic is provided with a reinforcing portion at the corresponding position of the through hole, and a graded mesh is uniformly provided between each adjacent reinforcing portion.

[0010] In one possible implementation, at least a portion of the sleeve extends outside the through hole.

[0011] In one possible implementation, a sealed air channel is provided at the connection between the fixed ring and the classifying ceramic; a plurality of separation protrusions are provided along the inner side of the fixed ring, and the plurality of separation protrusions are arranged with equal arc along the inner circumference of the fixed ring; wherein, when the classifying wheel rotates for classification, the centrifugal force generated by the rotation of the separation protrusions is used to prevent material from entering the classifying wheel through the sealed air channel.

[0012] In one possible implementation, the ends of several of the separation protrusions are inclined.

[0013] In one possible implementation, a top cover is also included, which is disposed on the graded ceramic, and the center of the top cover is provided with a shaft hole for connection with the motor shaft.

[0014] In one possible implementation, a first bottom ring ceramic is further included, which is disposed on the upper end face of the fixed ring and is detachably connected to the fixed ring.

[0015] In one possible implementation, a second bottom ring ceramic is further included, which is disposed on the lower end face of the fixed ring and is detachably connected to the fixed ring. The first bottom ring ceramic is disposed correspondingly to the second bottom ring ceramic.

[0016] In one possible implementation, a patch is further included, which is disposed at the connection between the graded ceramic and the fixing ring to seal the connection between the graded ceramic and the fixing ring.

[0017] In one possible implementation, the patch is L-shaped; the patch has a first stop on its vertically positioned side, the first stop being connected to the side wall of the fastener; the patch has a second stop on its horizontally positioned side, the second stop being connected to the retaining ring.

[0018] According to the grading wheel provided in the embodiments of this application, when it is working, the torque and pressure generated by its rotation are applied to the sleeve rather than to the grading ceramic. The ceramic is subjected to less force, which effectively improves the service life and safety of the grading wheel.

[0019] Furthermore, the grading wheel provided in this application is composed of multiple grading ceramics rather than a single unit, which solves the technical problems of high sintering difficulty and stress concentration caused by the complex structure of integral grading wheels or whole circular ceramics. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In addition, in the drawings, the same parts use the same reference numerals, and the drawings are not drawn to scale.

[0021] Figure 1 This illustration shows a structural schematic diagram of the grading wheel provided in an embodiment of this application;

[0022] Figure 2 This application provides an embodiment of the invention. Figure 1 Enlarged views of sections C and D in the middle;

[0023] Figure 3 This shows a front view of the grading wheel provided in an embodiment of this application;

[0024] Figure 4 This application provides an embodiment of the invention. Figure 3 Enlarged view of a portion of point A in the middle;

[0025] Figure 5 This application provides an embodiment of the invention. Figure 3 Enlarged view of a section at point B in the middle;

[0026] Figure 6 This illustration shows a structural schematic diagram of the graded ceramic provided in an embodiment of this application;

[0027] Figure 7 This invention provides a schematic diagram of the structure of a fixing ring according to an embodiment of the present application.

[0028] Figure 8 This diagram illustrates the structure of the patch provided in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Top cover;

[0031] 2. Sleeve;

[0032] 3. Graded ceramic; 31. Reinforcing section; 32. Graded mesh opening;

[0033] 4. First bottom ring ceramic;

[0034] 5. Patch; 51. First stop; 52. Second stop;

[0035] 6. Retaining ring;

[0036] 7. Second bottom ring ceramic;

[0037] 8. Fasteners;

[0038] 9. Through hole;

[0039] 10. Annular groove. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] There are two main types of existing grading wheel structures: one is an integrated grading wheel, and the other is a split grading wheel. Both integrated and split grading wheels suffer from stress concentration during the sintering process. The torque generated during operation is borne by the ceramic. Once a crack occurs, the entire ceramic becomes unusable. Cost and safety aspects still need to be improved.

[0042] In view of this, the embodiments of this application aim to solve at least one of the above-mentioned technical problems, and thus provide a grading wheel that solves the problem that the existing grading wheel structure uses ceramic to bear torque and force, effectively improving the service life of the grading wheel.

[0043] For details, please refer to Figure 1 and Figure 3 This application provides a grading wheel, including a fixed ring 6, grading ceramics 3, and a sleeve 2. The fixed ring 6 is a circular ring. The grading ceramics 3 are disposed on the outer edge of the fixed ring 6 and are evenly arranged in a plurality of them along the circumference of the fixed ring 6. Each grading ceramic 3 is provided with a through hole 9. The sleeve 2 is disposed in the through hole 9 of the grading ceramic 3 and is locked in the through hole 9 by a fastener 8. When the grading wheel rotates for grading, the rotational force generated by the rotation drives the fixed ring 6 and the grading ceramics 3 to rotate, so as to grade the materials. The torque generated by the rotational force is borne by the sleeve 2.

[0044] It should be noted that the grading wheel provided in this application embodiment has been further improved on the split grading wheel to obtain the grading wheel structure provided in this application embodiment. This grading wheel structure not only adds the sleeve 2 as the bearing unit of the grading ceramic 3, but also improves the previous whole round grading ceramic 3 structure into a complete grading ceramic 3 assembled from multiple grading ceramic segments. Through the above improvements, not only is the torque bearing pressure of the grading ceramic 3 reduced, but the technical problems of high sintering difficulty and high cost of whole round grading ceramic 3 are also solved.

[0045] In an additional example, the sleeves 2 provided in this application embodiment are all metal parts. Metal parts have good tensile and deformation resistance, and are therefore the preferred choice for withstanding high-speed torque. Of course, those skilled in the art can also choose the material of the sleeve 2 according to the actual situation, as long as it can withstand high-speed torque. Therefore, adjustments and changes to the material of the sleeve 2 do not deviate from the principles and scope of this application, and should all be limited to the protection scope of this application.

[0046] In another additional example, such as Figure 6 As shown, the graded ceramic 3 provided in this application embodiment is in the shape of tiles. The edges of each tile-shaped graded ceramic 3 are continuously connected together to form a complete circular structure of graded ceramic 3. Therefore, if a graded ceramic 3 is damaged, only the corresponding graded ceramic 3 needs to be replaced, instead of replacing the entire graded ceramic 3 structure, thus saving manufacturing costs.

[0047] In another additional example, such as Figure 2 As shown, an annular groove 10 is provided on the inner circle of the fixing ring 6. Each graded ceramic 3 is inserted into the annular groove 10 for fixation. While ensuring connection, the graded ceramic 3 can also be well positioned to prevent misalignment of the assembled graded ceramic 3 structure.

[0048] In an optional example, such as Figure 6 As shown, the graded ceramic 3 has a reinforcing part 31 at the corresponding position of the through hole 9, and a graded mesh 32 is evenly arranged between each adjacent reinforcing part 31. As described above, in order to ensure the structural strength of the graded ceramic 3, each graded ceramic 3 is provided with a reinforcing part 31. The reinforcing part 31 has a relatively large width, so that after being connected into a complete circle of graded ceramic 3, the structure is relatively stable and can remain stable and undeformed at high speeds.

[0049] In an optional example, such as Figure 3 and Figure 4As shown, at least a portion of the sleeve 2 extends beyond the through hole 9. It should be noted that, in order to ensure that the rotational force is applied directly to the sleeve 2, rather than to the classifying ceramic 3, and that the sleeve 2 directly bears the torque, the upper end of the sleeve 2 is slightly higher than the upper surface of the classifying ceramic 3. In this way, the power is transmitted from the motor shaft to the threaded fastener 8 and the sleeve 2, and then to the retaining ring 6, driving the entire classifying wheel to work. Since the sleeve 2 is slightly higher than the classifying ceramic 3, the connecting force of the retaining ring 6 is borne by the sleeve 2. During operation, most of the force is borne by the sleeve 2, resulting in less stress on the ceramic, effectively improving the service life and safety of the classifying wheel.

[0050] In an optional example, such as Figure 3 and Figure 5 As shown, a sealed air channel is provided at the connection between the fixing ring 6 and the graded ceramic 3; for example... Figure 7 As shown, the inner side of the fixed ring 6 is provided with a plurality of separation protrusions, and the plurality of separation protrusions are arranged with equal arc along the inner circumference of the fixed ring 6; wherein, when the classifying wheel rotates for classification, the centrifugal force generated by the rotation of the separation protrusions is used to prevent material from entering the classifying wheel through the sealed air channel.

[0051] Furthermore, such as Figure 7 As shown, the ends of several of the separation protrusions are inclined, and the inclination direction and inclination angle are adjustable to ensure consistency.

[0052] By setting the fixing ring 6 as described above, the classifying wheel provided in this application embodiment can also generate an outward centrifugal force at the bottom, preventing materials from entering the classifying wheel through the sealed air channel and ensuring the quality of the materials.

[0053] In an optional example, such as Figure 1 and Figure 3 As shown, the grading wheel provided in this embodiment of the application also includes a top cover 1, which is disposed on the grading ceramic 3. The top cover 1 has a shaft hole at its center for connection with the motor shaft. Furthermore, the top cover 1 covers the grading ceramic 3, and the edge of the top cover 1 is connected to the sleeve 2 by fasteners 8. In this way, the motor drives the top cover 1 and the fixing ring 6 to rotate, thereby applying torque to the sleeve 2 and reducing the torque pressure on the grading ceramic 3.

[0054] In an additional example, such as Figure 2 As shown, the edge of the top cover 1 is also provided with an annular groove 10, which is used to engage with the upper edge of the grading ceramic 3. Then, through the annular groove 10 of the aforementioned fixing ring 6 and the annular groove 10 of the top cover 1, the grading ceramic 3 is clamped between the two for fixation, ensuring the stability of the grading wheel structure.

[0055] In an optional example, such as Figure 3As shown, the grading wheel provided in this embodiment of the application also includes a first bottom ring ceramic 4, which is disposed on the upper end face of the fixed ring 6 and is detachably connected to the fixed ring 6.

[0056] Furthermore, the grading wheel provided in this application embodiment also includes a second bottom ring ceramic 7, which is disposed on the lower end face of the fixed ring 6. The second bottom ring ceramic 7 is detachably connected to the fixed ring 6, and the first bottom ring ceramic 4 is correspondingly disposed with the second bottom ring ceramic 7.

[0057] It should be noted that the first bottom ring ceramic 4 can prevent the second bottom ring ceramic 7 from moving upward, thereby playing a role in blocking the material.

[0058] In an optional example, such as Figure 8 As shown, the grading wheel provided in this embodiment of the application also includes a patch 5, which is disposed at the connection between the grading ceramic 3 and the fixing ring 6, and is used to seal the connection between the grading ceramic 3 and the fixing ring 6.

[0059] Furthermore, such as Figure 8 As shown, the patch 5 is L-shaped. The patch 5 has a first stop 51 on its vertically positioned side, located in the middle of the vertically positioned side, and the first stop 51 is embedded and connected to the side wall of the fastener 8. The patch 5 also has a second stop 52 on its horizontally positioned side, located at the edge of the horizontally positioned side, and the second stop 52 is embedded and connected to the fixing ring. It should be noted that the fixing ring also has an annular groove 10 on its bottom outer circumference, so that the second stop 52 can be embedded and engaged within the annular groove 10. With this design, during operation, these two stop structures prevent the patch 5 from being thrown out due to centrifugal force and effectively prevent the fastener 8 and sleeve 2 from contacting the material, while also avoiding the safety hazards caused by the fastener 8 and patch 5 falling off.

[0060] The graded wheel provided according to the embodiments of this application has the following beneficial effects:

[0061] 1. It solves the technical problems of high sintering difficulty and stress concentration caused by the complex structure of integrated grading wheels or whole round ceramics, thus improving safety performance;

[0062] 2. This solves the technical problem of using ceramic to bear torque and force in the existing grading wheel structure, effectively improving the service life of the grading wheel;

[0063] 3. It improves the situation where large particles are mixed into the finished product through the sealed air channel of the classifier wheel, effectively improving product quality;

[0064] 4. It solves the technical problem of conventional round ceramic patches being easy to fall off and posing a risk of dropping, greatly improving the safety of product manufacturing.

[0065] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0066] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0067] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A grading wheel, characterized in that, include: The fixing ring is circular. Graded ceramics are disposed on the outer edge of the fixing ring, and a plurality of them are evenly distributed along the circumference of the fixing ring. Each graded ceramic has a through hole. A sleeve is disposed within the through hole of the graded ceramic and is locked within the through hole by fasteners; When the grading wheel rotates, the rotational force generated by the rotation drives the fixed ring and the grading ceramic to rotate, so as to classify the material. The torque generated by the rotational force is borne by the sleeve. It also includes a patch, which is disposed at the connection between the graded ceramic and the fixing ring, for sealing the connection between the graded ceramic and the fixing ring; The patch is L-shaped; The patch has a first stop on its vertically arranged side, and the first stop is connected to the side wall of the graded ceramic. The patch has a second stop on its horizontally positioned side, and the second stop is connected to the fixing ring.

2. The grading wheel according to claim 1, characterized in that, The graded ceramic has a reinforcing part at the corresponding position of the through hole, and a graded mesh is evenly arranged between each adjacent reinforcing part.

3. The grading wheel according to claim 1, characterized in that, At least a portion of the sleeve extends outside the through hole.

4. The grading wheel according to claim 1, characterized in that, A sealed air passage is provided at the connection between the fixing ring and the graded ceramic. The inner side of the fixed ring is provided with a plurality of separation protrusions, and the plurality of separation protrusions are arranged with equal arc along the inner circumference of the fixed ring. During the grading rotation of the grading wheel, centrifugal force is generated by the rotation of the separation protrusion to prevent material from entering the grading wheel through the sealed air channel.

5. The grading wheel according to claim 4, characterized in that, The ends of several of the separation protrusions are inclined.

6. The grading wheel according to claim 1, characterized in that, It also includes a top cover, which is disposed on the graded ceramic, and the center of the top cover is provided with a shaft hole for connection with the motor shaft.

7. The grading wheel according to claim 1, characterized in that, It also includes a first bottom ring ceramic, which is disposed on the upper end face of the fixed ring and is detachably connected to the fixed ring.

8. The grading wheel according to claim 7, characterized in that, It also includes a second bottom ring ceramic, which is disposed on the lower end face of the fixed ring and is detachably connected to the fixed ring. The first bottom ring ceramic and the second bottom ring ceramic are respectively disposed.

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