Efficient and stable grading wheel structure

Abstract

The utility model provides an efficient and stable grading wheel structure which comprises a grading wheel body, a conical balance weight body is installed at the bottom of the grading wheel body, and the gravity center of the conical balance weight body is consistent with a rotating center shaft of the grading wheel body. According to the grading wheel, the conical counterweight body is arranged at the bottom of the grading wheel body, and the gravity center of the conical counterweight body is consistent with the rotating center shaft of the grading wheel body, so that the stability of the grading wheel during high-speed operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of sodium-ion battery technology, and in particular to a high-efficiency and stable graded wheel structure. Background Technology

[0002] Currently, among sodium-ion battery anode materials, biomass hard carbon materials are widely available, have simple synthesis processes, are environmentally friendly and renewable, and have certain economic benefits, making them a high-quality carbon source for sodium-ion battery anode materials.

[0003] In the air jet milling process, to meet production capacity requirements, powder materials are graded and conveyed. Larger-sized classifying wheels and air conveying devices are usually used to increase the powder flow rate. However, in existing preparation processes, large-sized classifying wheels often vibrate due to uneven material and wear during operation, which exacerbates the wear of their guide rails. This results in uneven particle size distribution in the powder classification, poor product consistency, and excessive current in the separator motor, leading to decreased processing efficiency. Utility Model Content

[0004] To address the aforementioned issues, this invention aims to propose a highly efficient and stable grading wheel structure that ensures the stability of the grading wheel during high-frequency operation, extends its service life, improves production efficiency, and guarantees grading effectiveness, thereby enhancing the consistency of product particle size.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A highly efficient and stable grading wheel structure includes a grading wheel body, and a conical counterweight is installed on the bottom of the grading wheel body, the center of gravity of the conical counterweight being consistent with the rotation axis of the grading wheel body.

[0007] Furthermore, the conical counterweight is a vertebral or frustum structure.

[0008] Furthermore, the cone or frustum structure is a solid structure, and its overall height does not exceed 1 / 3 of the height of the graded wheel body.

[0009] Furthermore, the grading wheel body includes an annular guide plate and a lower baffle plate. The conical counterweight is installed on the lower baffle plate by screws. The upper end face of the conical counterweight and the lower end face of the annular guide plate are both provided with a number of blade grooves. The blade grooves on the upper end face of the conical counterweight and the lower end face of the annular guide plate are used to fix the grading blades.

[0010] Furthermore, a guide rail is provided at the top edge of the annular guide plate, and a slot is provided at the center.

[0011] Furthermore, the spacing between adjacent graded blades is 45-55 mm.

[0012] Furthermore, the blade groove has a depth of 25-35mm, a width of 4-6mm, and a length of 5-8mm.

[0013] Furthermore, the surface of the conical counterweight is a smooth surface.

[0014] Furthermore, the material of the conical counterweight is the same as the base material of the grading wheel body.

[0015] Furthermore, the conical counterweight is a counterweight made of metal, ceramic, or a combination of metal and ceramic.

[0016] Beneficial effects: This utility model improves the stability of the grading wheel when it runs at high speed by setting a conical counterweight on the bottom of the grading wheel body, with the center of gravity of the conical counterweight being consistent with the rotation axis of the grading wheel body. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a schematic diagram of the efficient and stable graded wheel structure described in an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of the efficient and stable graded wheel structure described in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram showing the cooperation between the conical counterweight and the lower baffle plate of the efficient and stable graded wheel structure described in this embodiment of the utility model.

[0021] Figure 4 This is a schematic diagram showing the interaction between the conical counterweight of the efficient and stable graded wheel structure described in this embodiment of the invention and the lower baffle plate.

[0022] Figure 5 This is a schematic diagram showing the interaction between the conical counterweight of the efficient and stable graded wheel structure described in this embodiment of the invention and the lower baffle plate. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] The existing tiered wheel mechanism has the following defects:

[0026] Prolonged operation of the classifier wheel leads to localized wear on the blades, resulting in a shift in the center of gravity.

[0027] After the center of gravity of the grading wheel shifts, continued operation is prone to abnormal vibration of the grading wheel, causing wear on the grading wheel guide rail, increasing the guide rail clearance, further aggravating the vibration during grading operation, and significantly reducing the service life of the grading wheel;

[0028] Generally, a center of gravity test needs to be performed before the classifier is put into use. If necessary, adjustment blocks are welded onto the classifier blades. Adjusting the center of gravity is difficult and affects the classifier efficiency. Changing the gap between the classifier blades will affect the particle size consistency of the classified products.

[0029] Example 1

[0030] Based on the above technical deficiencies, see Figure 1-5 A highly efficient and stable grading wheel structure includes a grading wheel body 1, and a conical counterweight 2 is installed on the bottom of the grading wheel body 1. The center of gravity of the conical counterweight 2 is consistent with the rotation axis of the grading wheel body 1.

[0031] In this embodiment, a conical counterweight is installed on the bottom of the grading wheel body. The center of gravity of the conical counterweight is consistent with the rotation axis of the grading wheel body, thereby improving the stability of the grading wheel when running at high speed.

[0032] In a specific example, the conical counterweight 2 is a cone or frustum structure.

[0033] In a specific example, the cone or frustum structure is a solid structure, and its overall height does not exceed 1 / 3 of the height of the graded wheel body 1.

[0034] To ensure that the powder material can smoothly enter the classifying wheel through the feed gap of the blades, and that the counterweight does not affect the classification effect, the side of the cone can be designed with a smooth concave surface; the overall height of the cone or frustum structure generally does not exceed 1 / 3 of the total height of the classifying wheel.

[0035] In a specific example, the grading wheel body 1 includes an annular guide plate 10 and a lower baffle plate 11. The conical counterweight 2 is installed on the lower baffle plate 11 by screws. The upper end face of the conical counterweight 2 and the lower end face of the annular guide plate 10 are both provided with a plurality of blade grooves 3. The blade grooves 3 on the upper end face of the conical counterweight 2 and the lower end face of the annular guide plate 10 are used to fix the grading blades 12.

[0036] It should be noted that the lower baffle plate in this embodiment serves to prevent particles from entering the classifying wheel (preventing materials that do not meet the particle size requirements from entering the classifying wheel from below); there are feed gaps between adjacent classifying blades. When the classifying wheel is running at high speed, the airflow generated by the rotation of the blades can block the powder on the outside of the blade tails. Negative pressure is applied above the annular guide plate, so that the powder material enters the discharge pipe through the feed gaps of the classifying blades under centrifugal screening (the discharge pipe is set above the annular guide plate, and the negative pressure is used to guide the material that meets the particle size requirements suspended inside the classifying wheel into the next process through the discharge pipe); the conical counterweight can play a role in balancing the center of gravity when the classifying wheel is running at high frequency.

[0037] In a specific example, the annular guide plate 10 is provided with a guide rail 101 at its top edge and a slot 102 at its center.

[0038] The guide rail in this embodiment is used to provide a limiting track that matches the running trajectory of the grading wheel. The slot structure can be connected to the motor drive shaft to drive the grading wheel to rotate at high speed, thereby improving the stability of the grading wheel structure.

[0039] In practice, there can be multiple slots; these are used to connect with the motor drive shaft and ensure the stability of the connection with the motor drive shaft during the operation of the grader wheel.

[0040] In a specific example, the spacing between adjacent grading blades 12 is 45-55 mm.

[0041] In this embodiment, the spacing between adjacent grading blades is 45-55mm, ensuring that the size of the feed gap is appropriate and conducive to the screening of powder of suitable particle size in conjunction with the rotation speed of the grading wheel. If the feed gap is too large, it is not conducive to the screening and grading of powder of the target particle size; if the feed gap is too small, it is not conducive to the powder product passing through, which affects the production efficiency.

[0042] In a specific example, the blade groove has a depth of 25-35 mm, a width of 4-6 mm, and a length of 5-8 mm.

[0043] This embodiment ensures the stability of the graded blades after installation by limiting the size of the blade grooves.

[0044] In a specific example, the surface of the conical counterweight 2 is a smooth surface.

[0045] The conical counterweight in this embodiment has a smooth surface, which can reduce air resistance during equipment operation, ensure airflow conveying of powder of appropriate particle size, and avoid material residue affecting the screening of powder of appropriate particle size.

[0046] In a specific example, the material of the conical counterweight 2 is the same as the base material of the graded wheel body 1.

[0047] In this embodiment, the material of the conical counterweight is the same as the base material of the grading wheel, which can ensure that no other impurity elements are introduced during the grading process.

[0048] In a specific example, the conical counterweight 2 is a counterweight made of metal, ceramic, or a combination of metal and ceramic.

[0049] The conical counterweight in this embodiment is made of metal (SUS304, SUS316, SUS440, high manganese steel, carbon steel), ceramic (alumina, zirconium oxide, tungsten carbide), or a combination of the above. High manganese steel is generally selected, and surface treatments can be performed, including tungsten carbide coating (0.15-0.2mm) and surface nitriding. The selection of high-strength materials can extend the service life and reduce maintenance costs.

[0050] In summary, this embodiment improves the stability of the classifying wheel at high speeds by adding a conical counterweight structure to adjust the center of gravity of the large-size classifying wheel, concentrating it on the central axis of the classifying wheel. It also prevents the center of gravity from shifting due to localized wear of the blades caused by prolonged operation, thus avoiding abnormal vibrations during classifying wheel operation and extending its service life. Furthermore, it increases the upper limit of the classifying wheel's operating frequency, broadens the range of particle size selection for the current process, improves classification efficiency, and ultimately increases production capacity. Finally, it stabilizes the classification current, preventing excessive load on the equipment and improving product particle size uniformity.

[0051] The working principle of this embodiment is as follows: When the motor drives the classifying wheel to rotate at high speed in the classifying housing (the speed can be adjusted arbitrarily), a strong centrifugal force is generated in the classifier. 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 subjected to greater centrifugal force and are thus thrown to the outer periphery of the classifying wheel to the side wall of the classifier. They are no longer affected by centrifugal force and naturally fall into the crushing host for further crushing or fall to the discharge port for collection. Small or light materials are subjected to less centrifugal force and are suspended inside the classifying wheel. They are carried to a higher position by the induced draft of the fan and move along the pipeline to the next component for classification or collection. The magnitude of the centrifugal force in the classifier can be adjusted by frequency conversion adjustment of the speed of the classifying wheel. Due to the setting of the conical counterweight, the classifying wheel runs stably, thereby achieving the purpose of separating materials of a specified particle size.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A highly efficient and stable graded wheel structure, characterized in that, The grading wheel body (1) includes a grading wheel body (1), and a conical counterweight (2) is installed on the bottom of the grading wheel body (1). The center of gravity of the conical counterweight (2) is consistent with the rotation axis of the grading wheel body (1). The grading wheel body (1) includes an annular guide plate (10) and a lower baffle plate (11). The conical counterweight (2) is installed on the lower baffle plate (11) by screws. The upper end face of the conical counterweight (2) and the lower end face of the annular guide plate (10) are provided with several blade grooves (3). The blade grooves (3) between the upper end face of the conical counterweight (2) and the lower end face of the annular guide plate (10) are used to fix the grading blades (12).

2. The efficient and stable graded wheel structure according to claim 1, characterized in that, The conical counterweight (2) is a vertebral or frustum structure.

3. The efficient and stable graded wheel structure according to claim 2, characterized in that, The cone or frustum structure is a solid structure, and its overall height does not exceed 1 / 3 of the height of the graded wheel body (1).

4. The efficient and stable graded wheel structure according to claim 1, characterized in that, The annular guide plate (10) is provided with a guide rail (101) at the top edge and a slot (102) at the center.

5. The efficient and stable graded wheel structure according to claim 1, characterized in that, The spacing between adjacent graded blades (12) is 45-55 mm.

6. The efficient and stable graded wheel structure according to claim 1, characterized in that, The blade groove has a depth of 25-35mm, a width of 4-6mm, and a length of 5-8mm.

7. The efficient and stable graded wheel structure according to claim 1, characterized in that, The surface of the conical counterweight (2) is a smooth surface.

8. The efficient and stable graded wheel structure according to claim 1, characterized in that, The material of the conical counterweight (2) is the same as the base material of the graded wheel body (1).

9. The efficient and stable graded wheel structure according to claim 1, characterized in that, The conical counterweight (2) is a counterweight made of metal, ceramic or a combination of metal and ceramic.

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