CN220386805U - Grading mechanism and pulverizer - Google Patents

Abstract

The utility model discloses a grading mechanism which comprises a plurality of blades, wherein the blades are uniformly arranged at intervals along the circumference, the blades are respectively provided with spans in the radial direction and the axial direction of the circumference so as to form a cover shape, and grading openings are formed between adjacent blades. The classifying mechanism and the pulverizer optimize and improve the air flow entering area during classification, have good air flow speed uniformity and small resistance, can avoid excessive pulverization, avoid wasting energy resources, and have more uniform classification and high discharge rate.

Description

Grading mechanism and pulverizer

Technical Field

The utility model relates to the technical field of crushers, in particular to a grading mechanism and a crusher.

Background

The main components of the superfine pulverizer comprise a pulverizing mechanism and a classifying mechanism, the pulverizing mechanism pulverizes materials, the pulverized materials pass through the classifying mechanism along with air flow, the classifying mechanism is a rotating classifying impeller, the pulverized materials with the granularity reaching the standard can pass through the classifying mechanism, and the large-particle materials fall back to the pulverizing mechanism to be pulverized continuously. The whole cylindric structure that is of current grading mechanism, evenly spaced has the blade on the circumference of plectane shape bottom plate, and when the grading mechanism rotated, the air current can only pass through the grading mechanism from circumference, and the region is for forming the vacuum area in the bottom plate lower part, leads to the air current velocity of flow through the grading mechanism fast, the distribution homogeneity is poor, has a lot of excessive crushing material, and the waste energy consumption resource is smashed to the repeatability, and the grading material degree of consistency is relatively poor.

Disclosure of Invention

The utility model aims to solve the technical problems and the technical task provided by the utility model are to improve the prior art, provide a classification mechanism and solve the problems that the classification mechanism adopted by the ultrafine pulverizer in the prior art has fast airflow velocity and poor distribution uniformity and influences the classification discharging uniformity.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

the utility model provides a grading mechanism, includes the blade, the blade has a plurality ofly along the even interval arrangement of circumference, the blade has the span in radial and the axial of circumference respectively in order to enclose into the cover form, constitutes the grading through-hole between the adjacent blade. The classifying mechanism has a simple structure, the area for entering the air flow is enlarged by arranging the specific structure of the blades, and the blades are respectively provided with spans in the radial direction and the axial direction of the circumference, so that the formed classifying ports are respectively provided with spans in the radial direction and the axial direction of the circumference, the air flow entering area is optimally improved, the air flow can pass through the classifying mechanism from the area with larger coverage area to classify the materials, the uniformity of the air flow velocity is good, the resistance is small, the excessive crushing can be avoided, the waste of energy consumption is avoided, the classification is more uniform, and the discharging rate is high.

Further, the novel material classification device further comprises a reinforcing piece, wherein the reinforcing piece is annular, the blades are circumferentially distributed along the reinforcing piece and connected with the reinforcing piece, the blade structure is kept stable, and the reliability and stability of material classification are improved.

Further, a plurality of reinforcing members are arranged at intervals, and all reinforcing members are in common with a round mandrel, so that the structural stability of the blade is improved better.

Further, the reinforcing piece is provided with grooves at uniform intervals along the circumferential direction of the reinforcing piece, the blades are embedded into the grooves to be connected with the reinforcing piece, the structure is simple, the connection is easy, the grooves play roles in positioning and connecting, and the connection stability is good and the precision is high.

Further, the motor driving device further comprises a driving part, wherein the end part of the blade close to the radial inner side is connected with the driving part, the driving part is used as a connecting component to keep the blade stable in structure, and is also used as a transmission component to enable the grading mechanism to rotate under the driving of the motor to realize grading treatment.

Further, be provided with the drive hole that is used for the transmission on the drive portion, the drive hole is provided with the keyway, simple structure, easily implement, transmission efficiency is high.

Further, be provided with the groove along circumference evenly spaced distribution on the drive division, in blade tip embedding groove is in order to be connected with the drive division, simple structure, easily connect, and the groove plays location and connection effect, and connection stability is good, the precision is high, maintains stable and even clearance between the guarantee blade, guarantee material classification homogeneity.

Further, the blades are in a bent strip shape, the structure is simple, the processing is easy, the blades are surrounded into a spherical cover-shaped structure, the air flow entering area is large, the air flow can pass through the device from the radial direction and the axial direction to be subjected to grading treatment, no vacuum zone exists, the uniformity of the air flow velocity is good, the resistance is small, and the grading effect is good.

A pulverizer comprises the classification mechanism.

Further, the pulverizer is of a vertical structure, the axial direction of the distribution circumference of the blades in the classifying mechanism is vertical, and air flow passes through the classifying mechanism from the transverse direction and the vertical direction to be classified, so that the pulverizer is compact in structure and good in classifying effect.

Compared with the prior art, the utility model has the advantages that:

the classifying mechanism and the pulverizer optimize and improve the air flow entering area during classification, have good air flow speed uniformity and small resistance, can avoid excessive pulverization, avoid wasting energy resources, and have more uniform classification and high discharge rate.

Drawings

FIG. 1 is a schematic perspective view of a classifying mechanism according to the present utility model;

FIG. 2 is a schematic top view of a classification mechanism according to the present utility model;

FIG. 3 is a schematic view of the airflow through the classification mechanism of the present utility model.

In the figure:

the blade 1, the stepped through opening 2, the reinforcement 3, the driving part 4, the driving hole 41, and the key groove 42.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The grading mechanism and the pulverizer disclosed by the embodiment of the utility model have the advantages of good air flow uniformity, small resistance, capability of avoiding excessive pulverization, capability of avoiding waste of energy consumption resources, more uniform grading and high discharge rate.

As shown in fig. 1 to 3, a classifying mechanism is applied to a pulverizer and mainly comprises blades 1, wherein a plurality of blades 1 are uniformly arranged at intervals along the circumference, each blade 1 is provided with a span in the radial direction and the axial direction of the circumference so as to form a cover shape, classifying openings 2 are formed between adjacent blades 1, the classifying mechanism is driven by a driving mechanism to rotate, namely, the classifying mechanism is driven to rotate around the circle center of the circumference where the blades 1 are positioned, the pulverized materials pass through the classifying openings 2 between the blades 1 along with air flow to realize classification, and the rotating speed of the classifying mechanism is controlled to control the classifying granularity. In this embodiment, the blades 1 have spans in the radial direction and the axial direction of the circumference, so that the blades 1 distributed along the circumference are enclosed into a bowl-shaped structure, and the classifying openings 2 formed between adjacent blades 1 have spans in the radial direction and the axial direction of the circumference, so that the airflow can pass through the classifying mechanism not only in the radial direction, but also in the axial direction to optimally increase the airflow passing area, the airflow can pass through the classifying mechanism in the radial direction and the axial direction to perform classifying treatment, the airflow velocity and the airflow distribution uniformity are good, the airflow passing resistance is small, excessive crushing can be avoided, waste of energy resources is avoided, the discharging rate is high, the classified 80-mesh particle size materials contain 20% and 5% of 120 meshes, the classification is more uniform, and the energy consumption can be saved by 5%.

In this embodiment, grading machine still includes reinforcement 3, reinforcement 3 is the annular, and is specific, reinforcement 3 is the ring shape along the circumference of blade 1 distribution, blade 1 distributes along reinforcement 3 circumference and is connected with reinforcement 3, be provided with the groove along its circumference even interval on the reinforcement 3, in the blade 1 embedded groove with be connected with reinforcement 3, simple structure, convenient connection, the groove plays location and connection effect, and connection stability is good, the precision is high, maintains stable and even clearance between the assurance blade 1, namely keeps grading port 2's stability to guarantee material grading stability and have good homogeneity. Further, the reinforcement 3 can be provided with a plurality of reinforcement 3 at intervals, and all reinforcement 3 are round mandrel altogether, in this embodiment, the reinforcement 3 is provided with two specifically, and one of them sets up in the one end of leaning on radial outside of blade 1, and another sets up in the middle part region of leaning on of blade 1, both ensures the structural stability of blade 1, does not influence the patency of classifying opening 2 simultaneously yet, and the guarantee air current passes through the resistance little, ensures classifying effect.

Further, the grading mechanism further comprises a driving part 4, the end part of the vane 1 on the radial inner side is connected with the driving part 4, the driving part 4 serves as a connecting component to keep the vane 1 stable in structure, and also serves as a transmission component to enable the grading mechanism to rotate under the driving of the motor to realize grading treatment, because the vane 1 is distributed along the circumference, the end part of the vane 1 on the radial inner side is positioned on a circle with smaller radius, the size of the driving part 4 is small, the weight of the grading mechanism is reduced, the driving power consumption is reduced, the driving part 4 is integrally formed into a round piece, grooves are uniformly distributed on the peripheral outer edge of the driving part 4 at intervals, the end part of the vane 1 is embedded into the grooves to be connected with the driving part 4, the structure is simple, the connection is convenient, the grooves play the roles of positioning and connection, the connection stability is good, the precision is high, the driving hole 41 is provided with a key groove 42, the structure is simple, the transmission stability is good, and the efficiency is high.

In this embodiment, the blades 1 are in a curved strip shape, specifically, the blades 1 are in a continuous curved solid shape, so that the blades 1 have spans in the radial direction and the axial direction of the distribution circumference of the blades, that is, the blades 1 have a certain length range covered in the radial direction and the axial direction of the distribution circumference of the blades, so that all the blades 1 enclose a spherical cover structure, which is equivalent to a hollow local spherical structure, and the spherical cover structure is smaller than half of the whole sphere, so that the resistance is small, the power consumption for driving the classification mechanism to rotate is reduced, the airflow passing area is optimized and increased, the airflow can pass through the classification mechanism from the radial direction and the axial direction for classification treatment, the airflow velocity and the airflow distribution uniformity are good, the airflow passing resistance is small, excessive crushing can be avoided, the energy consumption is avoided, and the discharge rate is high. Of course, other structures, such as a linear strip shape, may be adopted for the blade 1, and the blade 1 is inclined to the axial direction of the distribution circumference, so that in practice, the blade 1 also has spans in the radial direction and the axial direction of the distribution circumference, all the blades 1 also enclose a cover structure, the air flow passing area is also optimized and increased, the air flow can pass through the classifying mechanism from the radial direction and the axial direction for classification treatment, the air flow velocity and the air flow distribution uniformity are good, and the air flow passing resistance is small.

The classifying mechanism is applied to the pulverizer, the pulverizer can adopt a vertical structure, the classifying mechanism is arranged above the pulverizing mechanism, the axial direction of the distribution circumference of the blades 1 in the classifying mechanism is along the vertical direction, the end part of the radial inner side of each blade 1 is downward, namely the cover body structure formed by surrounding the blades 1 is in a lower narrow upper wide gesture, pulverized materials can pass through the classifying mechanism along the transverse inward direction and the vertical direction along the circumferential periphery of the classifying mechanism along with air flow to be classified, no vacuum zone exists below the classifying mechanism, the uniformity of the air flow speed is good, the resistance is small, excessive pulverization can be avoided, the waste of energy consumption resources is avoided, the classification is more uniform, and the discharging rate is high.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the utility model, and the scope of the utility model should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.

Claims (10)

1. The classifying mechanism is characterized by comprising blades (1), wherein a plurality of blades (1) are uniformly arranged at intervals along the circumference, the blades (1) are respectively provided with spans in the radial direction and the axial direction of the circumference so as to form a cover shape, and classifying through openings (2) are formed between every two adjacent blades (1).

2. Grading mechanism according to claim 1, further comprising a reinforcement (3), the reinforcement (3) being annular, the blades (1) being circumferentially distributed along the reinforcement (3) and being connected to the reinforcement (3).

3. A grading mechanism according to claim 2, wherein the stiffeners (3) are arranged in a plurality of spaced apart relationship, and all stiffeners (3) are co-circular spindles.

4. A classification mechanism according to claim 2, wherein the reinforcing members (3) are provided with grooves at regular intervals along the circumferential direction thereof, and the blades (1) are fitted into the grooves to be connected with the reinforcing members (3).

5. The classifying mechanism according to claim 1, further comprising a driving portion (4), wherein the radially inner end of the blade (1) is connected to the driving portion (4).

6. Grading mechanism according to claim 5, characterized in that the drive part (4) is provided with a drive hole (41) for transmission, the drive hole (41) being provided with a key slot (42).

7. A classification mechanism according to claim 5, characterized in that the driving part (4) is provided with grooves evenly spaced circumferentially, and the blade (1) ends are embedded in the grooves for connection with the driving part (4).

8. A classification mechanism according to any one of claims 1 to 7, wherein the blade (1) is in the shape of a curved strip.

9. A shredder comprising the classification mechanism of any one of claims 1 to 8.

10. A pulverizer as claimed in claim 9, wherein the pulverizer is of a vertical configuration, and the axial direction of the distribution circumference of the classification mechanism where the blades (1) are located is along the vertical direction.