Grading wheel with adjustable grading capacity

Abstract

The utility model discloses a grading wheel with adjustable grading capacity in the technical field of airflow screening, and aims to solve the problems that the grading wheel in the prior art is single in form, and the grading capacity is inconvenient to adjust. The device comprises a first annular disc body, a second annular disc body and an adjusting device, first rotary blades are distributed on the first annular disc body in a circumferential array at equal intervals, and second rotary blades are distributed on the second annular disc body in a circumferential array at equal intervals; the first annular disc body and the second annular disc body can be concentrically installed in a butt joint mode so that the first rotary blades and the second rotary blades can be located between the first annular disc body and the second annular disc body, the first rotary blades and the second rotary blades are the same in number and length, and the first rotary blades can be close to or away from the second rotary blades. The adjustable grading wheel is used for adjusting the distance between the adjacent blades of the grading wheel so as to change the grading capacity, adjustment of the corresponding grading range can be achieved without additionally replacing the grading wheel, and the adjustable grading wheel can meet various different production operation requirements.

Description

Technical Field

[0001] This utility model relates to a classifying wheel with adjustable classifying capacity, belonging to the technical field of airflow screening equipment. Background Technology

[0002] Airflow sieves utilize the different centrifugal forces generated by the varying particle sizes carried in the air to separate particles of different sizes. The most important key structural component is the classifying wheel. By installing a high-speed rotating classifying wheel inside the sieve, centrifugal force is generated to remove particles outside the corresponding particle size range, while particles within the allowable size range are screened out by following the airflow through the classifying wheel. However, due to the current limited structural design of the classifying wheel, its classification capacity at rated speed is limited, making it inconvenient for various applications requiring different particle sizes. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a classifying wheel with adjustable classifying capacity. This wheel can be used to adjust the spacing between adjacent blades to change the classifying capacity. It can adjust the corresponding classifying range without replacing the classifying wheel, and can achieve linear adjustment of the classifying capacity. It can effectively cope with different production operations.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] This utility model provides a grading wheel with adjustable grading capacity, comprising a first annular disc, a second annular disc, and an adjusting device. The first annular disc has first blades evenly spaced in a circumferential array, and the second annular disc has second blades evenly spaced in a circumferential array. The first and second annular discs can be concentrically connected and installed so that the first and second blades are located between the first and second annular discs. The number and length of the first and second blades are the same. The first annular disc can rotate relative to the second annular disc, allowing the first blades to move closer to or further away from the second blades. The adjusting device is used to adjust the relative angle between the first and second annular discs.

[0006] Specifically, the first blade can be aligned with the surface of the second blade.

[0007] Specifically, when the first blade and the second blade are aligned, the first blade and the second blade partially overlap.

[0008] Specifically, the first annular disk is provided with a plurality of support rods, and a support block is provided above each support rod. The support block is used to abut against the second annular disk so that the first and second blades can abut against the position between the first and second annular disks.

[0009] Specifically, the upper surface of the second blade is provided with multiple arc-shaped holes, and a positioning block is rotatably provided on part of the support block. The positioning block passes through the arc-shaped holes and penetrates the second annular disk. An adjusting screw is also rotatably provided on the positioning block. An adjusting block is rotatably provided on the second annular disk at a position opposite to the arc-shaped holes. The adjusting screw and the adjusting block are threadedly connected.

[0010] Specifically, the second annular disk is provided with a limiting block for restricting the position of the positioning block.

[0011] Specifically, the side of the arc-shaped hole is provided with a scale groove for detecting the position of the positioning block.

[0012] Specifically, at least two of the support blocks are equipped with guide screws, which extend through arc-shaped holes and out of the upper surface of the second annular disc. Nuts are also threaded onto the guide screws to lock the second annular disc onto the support blocks.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0014] This invention arranges two types of blades correspondingly on a first annular disk and a second annular disk, respectively. The first and second blades are staggered by docking the annular disks. At the same time, by rotating the relative angle between the first and second annular disks, the first and second blades can be moved closer or further apart, thus forming permissible air inlets of different widths. The wider air inlet is used as the final application air inlet. By changing the width of the air inlet, different particle sizes can be screened, thereby achieving linear adjustment of the screening process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the grading wheel provided in this embodiment of the utility model;

[0016] Figure 2 This is a utility model Figure 1 An enlarged view of the structure at point A of the grading wheel provided in the embodiment;

[0017] Figure 3 This is a schematic diagram of the structure of the second annular disk provided in this embodiment of the present invention;

[0018] Figure 4 This is a front view of the grading wheel provided in an embodiment of this utility model;

[0019] Figure 5 This is a utility model Figure 4 A cross-sectional view of the grading wheel in the BB direction provided in the embodiment;

[0020] Figure 6 This is a top view of the grading wheel provided in an embodiment of the present invention;

[0021] Figure 7 This is a utility model Figure 6 A cross-sectional view of the grading wheel in the CC direction provided in the embodiment;

[0022] Figure 8 This is a utility model Figure 6 A cross-sectional view of the grading wheel in the DD direction provided in the embodiment;

[0023] Reference numerals in the attached drawings: 1. First annular disc; 2. Second annular disc; 3. First vane; 4. Second vane; 5. Support rod; 6. Support block; 7. Guide screw; 8. Arc-shaped hole; 9. Positioning block; 10. Adjusting block; 11. Adjusting screw; 12. Limiting block; 13. Scale groove. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example:

[0027] This utility model provides a classifying wheel with adjustable classifying capacity, used to adjust the spacing between adjacent blades to change the classifying capacity. It allows for adjustment of the corresponding classifying range without replacing the classifying wheel, enabling linear adjustment of the classifying capacity. It is effectively applied in various production operations. To realize the structural function of the classifying wheel, it includes a first annular disc 1, a second annular disc 2, and an adjusting device. The first annular disc 1 has first rotating blades 3 arranged in a circumferential array at equal intervals, and the second annular disc 2 has second rotating blades 4 arranged in a circumferential array at equal intervals. The first rotating blades 3 and second rotating blades 4 are installed using an interlocking method. Specifically, the first annular disc 1 and the second annular disc 2 are designed to be concentrically connected, and the first rotating blades 3 and second rotating blades 4 are positioned between the first annular disc 1 and the second annular disc 2. Figure 1 As shown, the first blade 3 can contact the bottom of the second annular disk 2, and the second blade 4 can abut against the top of the first annular disk 1, thus achieving blade connection. To improve contact capability, an elastic layer can be provided on the contact surface at the corresponding blade end for stable contact. The specific material and setting method of the elastic layer are not further limited here. However, the number and length of the first blade 3 and the second blade 4 must be the same to ensure that the first blade 3 and the second blade 4 can be evenly distributed. To adjust the grading capability, the first annular disk 1 is set to rotate relative to the second annular disk 2 so that the first blade 3 can rotate relative to the second annular disk 2. When the second blade 4 approaches or moves away from the first blade 3 and the second blade 4, air inlets of different widths can be formed between adjacent blades. The grading capacity is taken from the grading capacity of the large air inlet. Thus, the grading capacity required by the grading wheel can be improved by adjusting the width of the large air inlet. The adjustment device is used to adjust the relative angle between the first annular disk 1 and the second annular disk 2. It is necessary to ensure that the first annular disk 1 and the second annular disk 2 can be relatively fixed to avoid problems such as grading capacity failure and collision damage to the grading wheel caused by loosening of the connection structure during high-speed operation. Since the specific implementation method is not unique, the preferred implementation method can be referred to in the following text.

[0028] This utility model provides a grading wheel with adjustable grading capability. When adjusting the spacing between adjacent blades, the two blades can be brought together to form a structure similar to a single blade, thus expanding the maximum sieving particle size range. To achieve this, the first blade 3 needs to be aligned with the surface of the second blade 4. The alignment should be surface contact, and a specific matching arc is used to form a stable connection structure with high structural rigidity at the junction. As a preferred embodiment, to avoid the overlap of the first blade 3 and the second blade 4 not having a significant performance improvement effect, the first blade 3 and the second blade 4 can be partially overlapped when aligned, i.e., as shown... Figure 5 As shown, the diameters of the arcs containing the inner and outer diameters of the first rotor blade 3 and the second rotor blade 4 are different, so that even if the first rotor blade 3 and the second rotor blade 4 overlap, the particle size screening performance will be significantly different compared to the existence of only the first rotor blade 3. Since the combined blades are wider, the centrifugal force generated will also be greater.

[0029] This utility model provides a grading wheel with adjustable grading capacity. To avoid stress concentration on the blades and damage, a plurality of support rods 5 are provided on the first annular disc 1, and a support block 6 is provided above each support rod 5. (See reference...) Figure 7 and Figure 8 As shown, the support block 6 is used to abut against the second annular disk 2 so that the first blade 3 and the second blade 4 can abut against the position between the first annular disk 1 and the second annular disk 2. That is, the total height of the support rod 5 and the support block 6 is equal to the length of the blade. The blade end adopts elastic abutment so that the main stress is concentrated on the support block 6 to avoid damage caused by excessive force on the blade.

[0030] This utility model provides a grading wheel with adjustable grading capability, specifically an adjustment device. Specifically, multiple arc-shaped holes 8 are provided on the upper surface of the second rotor 4, such as... Figure 1 , Figure 2 as well as Figure 7 As shown, a positioning block 9 is rotatably mounted on the support block 6. The positioning block 9 passes through the second annular disc 2 via an arc-shaped hole 8. An adjusting screw 11 is also rotatably mounted on the positioning block 9. The adjusting screw 11 is preferably horizontally mounted. Simultaneously, an adjusting block 10 is rotatably mounted on the second annular disc 2 at a position opposite to the arc-shaped hole 8. The adjusting screw 11 and the adjusting block 10 are threadedly connected. When it is necessary to adjust the relative angle between the first annular disc 1 and the second annular disc 2, the rotation angle of the adjusting screw 11 can be directly adjusted to bring the positioning block 9 and the adjusting block 10 closer or further apart. Furthermore, the adjusting screw 11 provides a stable connection, allowing it to withstand high-speed rotation without loosening. Figure 1 As shown, multiple adjusting screws 11 are used for synchronous fixing. However, during actual adjustment, due to rotational limitations, it is important to ensure that only one screw can be adjusted at a time. The other screws can be connected in a non-rotational manner, only used to further strengthen the locking effect. To avoid over-adjustment that could cause severe mutual compression and damage between the first blade 3 and the second blade 4, a limiting block 12 can be provided on the second annular disc 2 to limit the position of the positioning block 9. By blocking the position of the positioning block 9, the adjustment angle is limited to prevent it from being too large or too small, thus avoiding compression damage to the first blade 3 and the second blade 4.

[0031] This utility model provides a grading wheel with adjustable grading capability. In order to facilitate observation of the adjustment position and to determine the particle size sieving range corresponding to the current adjustment position, a scale groove 13 for detecting the position of the positioning block 9 can be provided on the side of the arc-shaped hole 8. As the positioning block 9 moves, it is easy to determine whether the current position meets the required sieving particle size range.

[0032] This utility model provides a grading wheel with adjustable grading capabilities, such as... Figure 1 and Figure 8 As shown, in order to provide positional constraints for the first annular disc 1 and the second annular disc 2 during installation, guide screws 7 (inserted vertically) are installed on at least two support blocks 6. Specifically, the guide screws 7 extend through the arc-shaped hole 8 and out of the upper surface of the second annular disc 2. When fixing after the angle is adjusted, the guide screws 7 can be locked onto the support block 6 by the locking action of the nut. It should be noted that the width of the arc-shaped hole 8 should not be too large to avoid inaccurate positioning.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A grading wheel with adjustable grading capability, characterized in that, The device includes a first annular disk (1), a second annular disk (2), and an adjustment device. The first annular disk (1) has first blades (3) arranged in a circumferential array at equal intervals. The second annular disk (2) has second blades (4) arranged in a circumferential array at equal intervals. The first annular disk (1) and the second annular disk (2) can be concentrically connected and installed so that the first blades (3) and the second blades (4) are located between the first annular disk (1) and the second annular disk (2). The number of first blades (3) and the number of second blades (4) are the same and the length is the same. The first annular disk (1) can rotate relative to the second annular disk (2) so that the first blades (3) can move closer to or further away from the second blades (4). The adjustment device is used to adjust the relative angle between the first annular disk (1) and the second annular disk (2).

2. The grading wheel with adjustable grading capability according to claim 1, characterized in that, The first blade (3) can be aligned with the surface of the second blade (4).

3. A grading wheel with adjustable grading capability according to claim 2, characterized in that, When the first blade (3) is aligned with the second blade (4), the first blade (3) and the second blade (4) partially overlap.

4. A grading wheel with adjustable grading capability according to claim 1, characterized in that, The first annular disk (1) is provided with a plurality of support rods (5), and a support block (6) is provided above each support rod (5). The support block (6) is used to abut against the second annular disk (2) so that the first blade (3) and the second blade (4) can abut against the position between the first annular disk (1) and the second annular disk (2).

5. A grading wheel with adjustable grading capability according to claim 4, characterized in that, The upper surface of the second blade (4) is provided with multiple arc-shaped holes (8), and a positioning block (9) is rotatably provided on part of the support block (6). The positioning block (9) passes through the second annular disk (2) through the arc-shaped holes (8). An adjusting screw (11) is also rotatably provided on the positioning block (9). An adjusting block (10) is rotatably provided on the second annular disk (2) at a position opposite to the arc-shaped holes (8). The adjusting screw (11) and the adjusting block (10) are threadedly connected.

6. A grading wheel with adjustable grading capability according to claim 5, characterized in that, The second annular disk (2) is provided with a limiting block (12) for limiting the position of the positioning block (9).

7. A grading wheel with adjustable grading capability according to claim 5, characterized in that, The side of the arc-shaped hole (8) is provided with a scale groove (13) for detecting the position of the positioning block (9).

8. A grading wheel with adjustable grading capability according to claim 5, characterized in that, At least two of the support blocks (6) are equipped with guide screws (7), which extend through the arc-shaped hole (8) and out of the upper surface of the second annular disc (2). The guide screws (7) are also threaded with nuts to lock the second annular disc (2) onto the support blocks (6).

Images