Classification wheel capable of increasing air inlet amount

Abstract

The utility model provides a grading wheel capable of increasing the air inlet amount, and relates to the technical field of grading wheels. The grading wheel comprises a grading wheel body which comprises blades, and is characterized in that a front flange is arranged at the front ends of the blades, a rear flange is arranged at the rear ends of the blades, the front flange and the rear flange are connected through a connecting rod, the front flange seals and fixes the outer end faces of the flanges through a front outer ring, and the rear flange seals and fixes the outer end faces of the flanges through a rear outer ring. The rear flange seals and fixes the outer end face of the flange through a rear outer ring. According to the utility model, wind resistance can be reduced, air inlet quantity is increased, and the rotating speed of the grading wheel is increased, so that product fineness and discharging efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of classification wheels, in particular to a classification wheel capable of increasing the air intake volume. Background Art

[0002] The classification wheel is the core component of the air classifier. The motor drives the classification wheel to rotate at a high speed in the classification housing, forming a strong centrifugal force in the classifier. The air-powder mixture entering the classifier first enters the interior of the classification wheel. Under the action of the centrifugal force, large or heavy particles are affected by a large centrifugal force, so they are thrown to the periphery of the classification wheel to the side wall of the classifier and no longer affected by the centrifugal force, and naturally fall into the grinding main machine to continue grinding or fall to the discharge port for collection; small or light materials are affected by a small centrifugal force and hover inside the classification wheel, and are carried to a high place under the influence of the suction force of the induced draft fan, and move along the pipeline to the next component to be classified or collected.

[0003] In the prior art, in the patent document with the publication number of CN207025846U, a classification wheel with an integrated auxiliary blade guide vane is proposed, including: a classification wheel (1), a main classification wheel blade (2), a secondary classification wheel blade (3), a guide vane tip (4). The secondary blade is based on the relatively regular main classification wheel blade 2, and a guide vane angle is added, and this angle is the secondary blade 3. When the classification wheel 1 rotates at a high speed to form a centrifugal force, the air flow and materials are affected by the centrifugal force and are thrown out from the inside of the classification wheel through the blades. Without the guide vane, the air-powder mixture is randomly thrown out, and the position is not fixed, interfering with the circulating air flow inside the classifier, resulting in a great impact on the classification accuracy and stability. The presence of this secondary blade aggregates all the air-powder mixture inside the classification wheel at the top of the classification wheel, and is guided by the secondary blade, and the material is thrown out along the 33-degree acute angle of the 4 guide vane tip, which excellently maintains the non-interference between multiple fluid force fields inside the classification wheel.

[0004] Although the prior art has a better guiding effect, in the actual working process, there will still be problems such as insufficient air intake volume and low rotation speed of the classification wheel. Summary of the Utility Model

[0005] Aiming at the deficiencies in the above problems, the utility model provides a classification wheel capable of increasing the air intake volume, which can reduce the wind resistance, increase the air intake volume, improve the rotation speed of the classification wheel, and thus improve the product fineness and discharge efficiency.

[0006] To solve the above problems, the present utility model provides a classifier wheel capable of increasing the air intake volume, including a classifier wheel body, the classifier wheel body includes blades, wherein, a front flange is provided at the front end of the blade, a rear flange is provided at the rear end of the blade, and the front flange and the rear flange are connected by a connecting rod, the front flange seals and fixes the outer end face of the flange through a front outer ring, and the rear flange seals and fixes the outer end face of the flange through a rear outer ring.

[0007] Preferably, it further includes an inner ring, and the front flange fixes the inner end face of the flange through the inner ring.

[0008] Preferably, the blade includes a plurality of blades arranged in parallel, and there is a feed gap between several adjacent blades.

[0009] Preferably, a cavity is formed inside the plurality of blades.

[0010] Preferably, the blade surface forms a 45° angle with the normal direction of the circle where it is located.

[0011] Compared with the prior art, the present utility model has the following advantages:

[0012] The present utility model can reduce wind resistance, increase the air intake volume, increase the rotational speed of the classifier wheel, thereby improving the product fineness and discharging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0014] Figure 2 is a top view of the structural diagram of an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and examples, but the examples given are not intended to limit the present utility model.

[0016] As Figure 1 and Figure 2 shown, the embodiment of the present utility model includes a chassis 5 and a classifier wheel body. The classifier wheel body is arranged at the upper end of the chassis 5. The classifier wheel body includes a plurality of blades 3. A front flange is provided at the front end of the plurality of blades 3, a rear flange is provided at the rear end of the plurality of blades 3, and the front flange and the rear flange are connected by a connecting rod. The front flange seals and fixes the outer end face of the flange through a front outer ring 1, the rear flange seals and fixes the outer end face of the flange through a rear outer ring 4, and the front flange seals and fixes the inner end face of the flange through an inner ring 2.

[0017] In this embodiment, the vane 3 includes a plurality of vanes arranged in parallel. There is a feed gap between several adjacent vanes 3, and a cavity is formed inside the plurality of vanes 3. Among them, the leaf surface of each vane 3 forms an angle of 45° with the normal direction of the circle at its position.

[0018] In this embodiment, the classification wheel is composed of front and rear inner flanges, front and rear outer rings, vanes and connecting rods. The vanes are fixedly connected to the front and rear inner flanges respectively, and the front and rear inner flanges are connected into one body by connecting rods. The front and rear outer rings seal and fix the outer end faces of the two flanges.

[0019] In this embodiment, there is a feed gap between adjacent vanes, a cavity is formed inside the plurality of vanes, and the leaf surface of each vane forms an angle of 45° with the normal direction of the circle at its position. In this way, the wind resistance can be reduced, the air intake can be increased, the rotation speed of the classification wheel can be increased, thereby improving the product fineness and the discharging efficiency.

[0020] Through the personnel in this field, all the electrical components in this case are connected to their adapted power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of the electrical components working successively in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in this field. The following mainly introduces the working principle and process, and no further description of the electrical control will be made.

[0021] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0022] In the description of this specification, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the technical solutions of this patent and simplifying the description, rather than indicating or implying 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 construed as limiting the present patent application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In this specification, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this specification can be understood according to specific circumstances.

[0025] In this specification, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0026] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0027] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A classifying wheel capable of increasing the amount of air intake, comprising a classifying wheel body, wherein the classifying wheel body comprises blades, characterized in that: The front end of the blade is provided with a front flange, the rear end of the blade is provided with a rear flange, and the front flange and the rear flange are connected by a connecting rod. The front flange is sealed and fixed to the outer end surface of the flange by a front outer ring, and the rear flange is sealed and fixed to the outer end surface of the flange by a rear outer ring.

2. A classifying wheel capable of increasing air intake according to claim 1, characterized in that: It also includes an inner ring, through which the front flange fixes the inner end surface of the flange.

3. A classifying wheel capable of increasing air intake as claimed in claim 2, characterized in that: The blades include a plurality of blades arranged in parallel, and a feed gap is provided between the plurality of adjacent blades.

4. A classifying wheel capable of increasing the air intake according to claim 3, characterized in that: A cavity is formed inside the plurality of blades.

5. A classifying wheel capable of increasing air intake as claimed in claim 4, characterized in that: The blade surface of the blade forms an angle of 45° with the normal direction of the circle where the blade is located.

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