A rotor structure of a powder classifier

Abstract

The utility model discloses a rotor structure of powder concentrator relates to the technical field of powder concentrator, including chassis, revolving cage, pivot, top frame and vane, the coaxial of revolving cage is established on the chassis, the coaxial of pivot is established on the revolving cage and its upper end is equipped with the fixed disc, the top frame is established on the pivot, the vane is equipped with several and is along the circumference between the chassis and the top frame distribution. The present application is through the vane to adopt the arc structure design, and its inner end is equipped with the bevel, and the arc structure can increase the contact area of vane and material, and the airflow field formed when rotating is more uniform, stable, reduces the interference of airflow vortex to material separation, and the bevel of inner end can guide material along the blade surface steady flow, avoids the material to accumulate in the blade end portion, and simultaneously will fine particle accurate orientation finished product collection area, and the coarse particle then smoothly enters the reflux channel, effectively reduces the phenomenon of overgrinding and coarse particle mixes into finished product, makes finished product fineness qualified rate to promote.

Description

Technical Field

[0001] This utility model relates to the technical field of air classifiers, and specifically to a rotor structure for an air classifier. Background Technology

[0002] In industries such as cement, building materials, and metallurgy, air classifiers are crucial grading equipment. Their core function is to precisely separate ground materials according to particle size, ensuring that the fineness of the finished product meets production requirements, while returning coarse particles to the grinding system for secondary processing. The rotor structure, as the core power component of the air classifier, plays a decisive role in the equipment's performance due to its rational design. Traditional air classifier rotors often use a straight-blade design, resulting in uneven contact area between the blades and the material. This leads to poor airflow stability during rotation, causing some fine particles to return to the grinding system along with coarse particles, resulting in over-grinding. This not only increases energy consumption but also reduces the finished product yield. Simultaneously, some coarse particles may mix into the finished product, affecting the product's fineness qualification rate. Summary of the Invention

[0003] The purpose of this invention is to provide a rotor structure for a classifier to overcome the aforementioned defects in the prior art.

[0004] A rotor structure for an air classifier includes a chassis, a rotating cage, a rotating shaft, a top frame, and blades. The rotating cage is coaxially mounted on the chassis, the rotating shaft is coaxially mounted on the rotating cage and has a fixed plate at its upper end, the top frame is mounted on the rotating shaft, and a plurality of blades are provided and evenly distributed along the circumference between the chassis and the top frame.

[0005] Preferably, the blade has an arc-shaped structure and its inner end has a beveled surface.

[0006] Preferably, the top frame includes a connecting ring, a top ring, and a connecting plate. The connecting ring is disposed on the rotating shaft, and the top ring is sleeved on the outside of the connecting ring. The top ring is connected to the connecting ring through several connecting plates.

[0007] Preferably, the connecting ring is connected to the rotating shaft by a number of bolts.

[0008] Preferably, a connecting edge one is provided on one side of the upper end of the blade, and a connecting edge two is provided on the other side of the lower end of the blade. The connecting edge one is connected to the top ring, and the connecting edge two is connected to the chassis.

[0009] Preferably, the connecting edge is connected to the top ring by a number of rivets.

[0010] Preferably, the second connecting edge is connected to the chassis by a number of rivets.

[0011] The beneficial effects achieved by this utility model are as follows:

[0012] This application utilizes an arc-shaped blade design with a beveled inner end. The arc-shaped structure increases the contact area between the blade and the material, resulting in a more uniform and stable airflow field during rotation. This reduces the interference of airflow eddies on material separation. The beveled inner end guides the material to flow smoothly along the blade surface, preventing material accumulation at the blade tip. Simultaneously, it precisely guides fine particles to the finished product collection area, while coarse particles smoothly enter the return channel, effectively reducing over-grinding and the mixing of coarse particles into the finished product, thereby improving the finished product fineness qualification rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the top frame of this utility model.

[0015] Figure 3 This is a schematic diagram of one side of the blade of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the other side of the blade of this utility model.

[0017] In the diagram, 1 is the chassis; 2 is the rotating cage; 3 is the rotating shaft; 4 is the fixed plate; 5 is the top frame; 51 is the connecting ring; 52 is the top ring; 53 is the connecting plate; 6 is the blade; 61 is the oblique cut surface; 62 is the first connecting edge; and 63 is the second connecting edge. Detailed Implementation

[0018] 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.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0020] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] like Figure 1-4 As shown, this utility model provides a rotor structure for a classifier, including a chassis 1, a rotating cage 2, a rotating shaft 3, a top frame 5, and blades 6. The rotating cage 2 is coaxially mounted on the chassis 1, and the rotating shaft 3 is coaxially mounted on the rotating cage 2 with a fixed plate 4 at its upper end.

[0022] In addition, the top frame 5 is mounted on the rotating shaft 3. The top frame 5 includes a connecting ring 51, a top ring 52, and a connecting plate 53. It is connected to the rotating shaft 3 by several bolts. Compared with traditional welding or single bolt connection, the connection method of multiple bolts evenly distributed can distribute the force to multiple bolts, avoid local stress concentration, and at the same time ensure the coaxiality of the connecting ring 51 and the rotating shaft 3, reducing vibration during rotation.

[0023] In addition, the top ring 52 is sleeved on the outside of the connecting ring 51. The top ring 52 is connected to the connecting ring 51 through several connecting plates 53 to form a stable frame structure, which can effectively resist the impact force of the material on the top frame 5 during rotation and prevent the top frame 5 from deforming.

[0024] In addition, the blades 6 are provided in a plurality of form and are evenly distributed along the circumference between the base plate 1 and the top frame 5. The blades 6 are arc-shaped and have a beveled surface 61 at their inner ends. The arc-shaped structure can increase the contact area between the blades 6 and the material, and the airflow field formed during rotation is more uniform and stable, reducing the interference of airflow eddies on material separation. The beveled surface 61 at the inner end can guide the material to flow smoothly along the surface of the blades 6, avoiding the accumulation of material at the end of the blades 6. At the same time, it can accurately guide fine particles to the finished product collection area, while coarse particles can smoothly enter the return channel, effectively reducing the phenomenon of over-grinding and coarse particles mixed into the finished product, thereby improving the finished product fineness qualification rate.

[0025] However, the blade 6 has a connecting edge 62 on one side of its upper end, which is connected to the top ring 52 by a number of rivets. The blade 6 has a connecting edge 63 on the other side of its lower end, which is connected to the chassis 1 by a number of rivets. The rivet connection has high vibration resistance and can effectively prevent the blade 6 from loosening or falling off due to high frequency vibration. The design of connecting edge 62 and connecting edge 63 increases the connection area between the blade 6 and the top frame 5 and chassis 1, further improving the fixation stability of the blade 6.

[0026] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A rotor structure for an air classifier, characterized in that: It includes a chassis (1), a rotating cage (2), a rotating shaft (3), a top frame (5), and blades (6). The rotating cage (2) is coaxially mounted on the chassis (1). The rotating shaft (3) is coaxially mounted on the rotating cage (2) and has a fixed plate (4) at its upper end. The top frame (5) is mounted on the rotating shaft (3). Several blades (6) are provided and are evenly distributed along the circumference between the chassis (1) and the top frame (5).

2. The rotor structure of a classifier according to claim 1, characterized in that: The blade (6) has an arc-shaped structure and its inner end is provided with a beveled surface (61).

3. The rotor structure of a classifier according to claim 1, characterized in that: The top frame (5) includes a connecting ring (51), a top ring (52) and a connecting plate (53). The connecting ring (51) is mounted on the rotating shaft (3). The top ring (52) is sleeved on the outside of the connecting ring (51). The top ring (52) is connected to the connecting ring (51) through several connecting plates (53).

4. The rotor structure of a classifier according to claim 3, characterized in that: The connecting ring (51) is connected to the rotating shaft (3) by several bolts.

5. The rotor structure of a classifier according to claim 3, characterized in that: The blade (6) has a connecting edge 1 (62) on one side of its upper end and a connecting edge 2 (63) on the other side of its lower end. The connecting edge 1 (62) is connected to the top ring (52) and the connecting edge 2 (63) is connected to the chassis (1).

6. The rotor structure of a classifier according to claim 5, characterized in that: The connecting edge (62) is connected to the top ring (52) by a number of rivets.

7. The rotor structure of a classifier according to claim 5, characterized in that: The connecting edge 2 (63) is connected to the chassis (1) by a number of rivets.

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