Double-gathering-rotating high-speed material flow interactive energy field micro-crushing and grading integrated equipment

Abstract

The invention relates to the technical field of powder engineering and superfine grinding, in particular to double-gathering-rotating high-speed material flow interaction energy field micro-grinding and grading integrated equipment which comprises a shell, a cavity is formed in the shell, and a driving device and a feeding device are arranged outside the shell. The feeding device comprises an upper gathering rotary hammer assembly and a lower gathering rotary hammer assembly, and the output end of the feeding device extends into the cavity; the grading mechanism comprises a centrifugal classifier arranged at the upper part of the cavity, and the grading mechanism is arranged above the crushing mechanism; the material returning mechanism comprises an independent material returning channel formed between the cavity wall of the cavity and the shell, and the material returning channel can send the coarse powder separated by the grading mechanism back to the crushing mechanism; the driving device drives the upper gathering rotary hammer assembly, the lower gathering rotary hammer assembly and the grading mechanism; the key technical problems that in the prior art, energy consumption is high, graded coarse powder and main material flow interfere with each other to affect efficiency, and micro-grinding and good spheroidization are difficult to achieve under low energy consumption are solved.

Description

Technical Field

[0001] This invention relates to the fields of powder engineering and ultrafine grinding technology, and in particular to an integrated device for micro-grinding and classification of high-speed material flow with dual swirling energy field interaction. Background Technology

[0002] Traditional pulverizing equipment, such as tool-based, kinetic-based, and lamination-based pulverizers, generally suffers from high energy consumption, significant wear, and inaccurate particle size control. Particularly when a classifier is integrated into the equipment, the material entrained by the airflow interferes with the coarse powder returned after classification, leading to decreased classification accuracy and efficiency loss. Existing technologies, such as collision fluidized bed jet mills, while achieving integrated operation to some extent, fail to fundamentally solve the core bottlenecks of low energy utilization and material flow interference. Therefore, there is an urgent need in this field for an innovative device that can achieve efficient pulverization, precise classification, and low energy consumption. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings mentioned in the background art and provide an integrated device for micro-pulverization and classification using a dual-swirl high-speed material flow interactive energy field. This device aims to solve the key technical problems of high energy consumption, interference between the graded coarse powder and the main material flow affecting efficiency, and the difficulty in achieving micro-pulverization and good sphericity with low energy consumption in traditional technologies.

[0004] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0005] A dual-swirl high-speed material flow interactive energy field micro-pulverization and classification integrated device includes a vertically arranged shell, an inner cavity within the shell, a driving device and a feeding device outside the shell, and the inner cavity containing:

[0006] The crushing mechanism includes an upper and lower gyratory hammer assembly, which are configured to generate a high-speed material flow and form a flexible energy crushing field with material flow interaction in the middle of the cavity. The output end of the feeding device extends into the cavity and is located between the upper and lower gyratory hammer assemblies.

[0007] A grading mechanism, comprising a centrifugal grading machine disposed at the upper part of the cavity, the grading mechanism being located above the pulverizing mechanism;

[0008] The return material mechanism includes an independent return material channel formed between the cavity wall and the shell of the cavity, the return material channel being configured to return coarse powder separated by the grading mechanism to the crushing mechanism, and the path of the return material channel returning the coarse powder in the cavity to the crushing mechanism is isolated from the path of the material flow in the crushing mechanism.

[0009] The drive unit drives the upper and lower gyratory hammer assembly and the grading mechanism.

[0010] Preferably, the lower swirling hammer assembly includes a centrifugal plate and a swirling hammer, wherein the centrifugal plate is configured to draw air from outside the cavity and generate centrifugal airflow.

[0011] Preferably, the upper and lower rotary hammer assemblies rotate in the same or opposite directions.

[0012] Preferably, the rotational speeds of the upper and lower rotary hammer assemblies are adjustable.

[0013] Preferably, the upper and lower gathering hammer assemblies are arranged facing each other, with the working surface of the upper gathering hammer assembly facing downwards and the working surface of the lower gathering hammer assembly facing upwards.

[0014] Preferably, the return channel is the space formed between the shell and the cavity.

[0015] Preferably, it also includes an exhaust system, which includes an exhaust fan and an air inlet. The exhaust fan is outside the cavity, the air inlet is at the bottom of the cavity, the exhaust fan is connected to the top of the cavity, and the air inlet is located below the centrifugal plate of the lower rotating hammer assembly.

[0016] Preferably, the grading mechanism includes centrifugal blades and a main shaft, with the centrifugal blades disposed on the main shaft and located above the upper gathering hammer assembly.

[0017] Preferably, the centrifugal air generated by the centrifugal blades of the classifier transports the material to the crushing mechanism through the return channel.

[0018] The beneficial effects of this application are:

[0019] 1. Significantly reduced energy consumption: The flexible energy field formed by the collision of the interacting material flow by the double-shafted hammers achieves efficient "material-to-material" crushing, which reduces the energy consumption per unit product compared to traditional rigid impact crushing.

[0020] 2. High classification accuracy and efficiency: The independent coarse powder return channel design fundamentally eliminates the mutual interference between returned materials and fresh feed and rising fine powder, ensuring classification accuracy and efficiency.

[0021] 3. Excellent particle morphology: The interaction mode of the energy field is more conducive to the spherical shape of materials during collision, resulting in more regular and rounded micro powder particles with good flowability.

[0022] 4. Stable and reliable operation: The optimized structural design and material flow path reduce internal turbulence and wear, resulting in smoother equipment operation and a longer service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this application;

[0024] Figure 2 This is a schematic diagram of the cavity in this application.

[0025] The components are: 1. cavity; 2. drive device; 3. feeding device; 4. swirling hammer; 5. protrusion; 6. centrifugal plate; 7. return channel; 8. induced draft fan; 9. air inlet; 10. centrifugal blades; 11. shell. Detailed Implementation

[0026] like Figure 1-2 As shown, a dual-swirl high-speed material flow interactive energy field micro-pulverization and classification integrated device includes a vertically arranged shell 11, a cavity 1 inside the shell 11, a drive device 2 and a feeding device 3 outside the shell 11, and the cavity 1 is equipped with:

[0027] The crushing mechanism includes an upper gathering hammer assembly and a lower gathering hammer assembly, which are configured to generate a high-speed material flow and form a flexible energy crushing field with material flow interaction in the middle of the cavity 1. The output end of the feeding device 3 extends into the cavity 1 and is located between the upper gathering hammer assembly and the lower gathering hammer assembly.

[0028] A grading mechanism, comprising a centrifugal classifier disposed at the upper part of the cavity 1, the grading mechanism being located above the pulverizing mechanism;

[0029] The return material mechanism includes an independent return material channel 7 formed between the cavity wall of the cavity 1 and the shell 11. The return material channel 7 is configured to send the coarse powder separated by the grading mechanism back to the crushing mechanism, and the return material channel 7 isolates the path of sending the coarse powder in the cavity 1 back to the crushing mechanism from the path of the material flow in the crushing mechanism.

[0030] The drive unit drives the upper and lower gyratory hammer assembly and the grading mechanism.

[0031] As a preferred embodiment, the lower gathering hammer assembly includes a centrifugal plate 6 and a gathering hammer 4. The centrifugal plate 6 is configured to draw air from outside the cavity 1 and generate centrifugal airflow. The air drawing from outside the cavity 1 can be continuous or intermittent, with intermittent drawing being more conducive to the spheroidization of micronized powder. The upper surface of the gathering hammer 4 within the lower gathering hammer assembly is provided with protrusions 5, which achieve the gathering and spheroidizing effect.

[0032] As a preferred embodiment, the upper gathering hammer assembly also includes a gathering hammer 4, and the lower surface of the gathering hammer 4 in the upper gathering hammer assembly is provided with a protrusion 5.

[0033] As a preferred embodiment, the upper and lower rotary hammer assemblies rotate in the same or opposite directions.

[0034] As a preferred embodiment, the rotational speeds of the upper and lower rotary hammer assemblies are adjustable.

[0035] In a preferred embodiment, the upper and lower gathering hammer assemblies are arranged facing each other, with the working surface of the upper gathering hammer assembly facing downwards and the working surface of the lower gathering hammer assembly facing upwards.

[0036] As a preferred embodiment, the return channel 7 is the space formed between the housing 11 and the cavity 1.

[0037] As a preferred embodiment, the system also includes an exhaust system comprising an exhaust fan 8 and an air inlet 9. The exhaust fan 8 is located outside the cavity 1, and the air inlet 9 is located at the bottom of the cavity 1. The exhaust fan 8 is connected to the top of the cavity 1, and the air inlet 9 is located below the centrifugal plate 6 of the lower rotating hammer assembly.

[0038] In a preferred embodiment, the grading mechanism includes centrifugal blades 10 and a main shaft, wherein the centrifugal blades 10 are disposed on the main shaft and are located above the upper gathering hammer assembly.

[0039] As a preferred method, the centrifugal air generated by the centrifugal blades 10 of the classifier transports the material to the crushing mechanism through the return channel 7.

[0040] In operation, the feeding device 3 conveys the material to the space between the upper and lower centrifugal hammer assemblies within the cavity 1. Driven by the drive device 2, the lower centrifugal hammer assembly rotates at high speed, its centrifugal plate 6 drawing in air through the air inlet 9 to create a blower. The material is thrown against the cavity wall of cavity 1, captured and accelerated by the lower centrifugal hammer assembly, and then ejected axially at high speed. Simultaneously, the upper centrifugal hammer assembly rotates at high speed, also ejecting a high-speed material stream. The two streams collide and rub violently in a pre-set interaction zone, completing the fine pulverization of the material. The pulverized material is then carried upwards by the airflow formed by the induced draft fan 8 and the lower centrifugal blower, entering the upper grading zone. The centrifugal classifier separates materials based on differences in particle size and centrifugal force. Qualified fine powder is drawn away and collected by the induced draft fan 8, while unqualified coarse powder is thrown against the chamber wall under the action of centrifugal force and falls into the unique return channel 7, which is isolated from the main crushing-classification space. Then, it enters the crushing mechanism through the return channel 7 and is crushed again by the crushing mechanism. The coarse powder falls smoothly back to the crushing mechanism along the return channel 7 under the action of centrifugal force of the classifier's centrifugal blades, is accelerated again, and participates in a new round of crushing cycle, forming a highly efficient closed-loop processing process.

Claims

1. A dual-swirl high-speed material flow interactive energy field micro-pulverization and classification integrated device, characterized in that, The device includes a vertically mounted housing (11), a cavity (1) inside the housing (11), a driving device (2) and a feeding device (3) outside the housing (11), and the cavity (1) is provided with: The crushing mechanism includes an upper gathering hammer assembly and a lower gathering hammer assembly, which are configured to generate a high-speed material flow and form a flexible energy crushing field with material flow interaction in the middle of the cavity (1). The output end of the feeding device (3) extends into the cavity (1) and is located between the upper gathering hammer assembly and the lower gathering hammer assembly. The grading mechanism includes a centrifugal classifier disposed in the upper part of the cavity (1), the grading mechanism being located above the pulverizing mechanism; The return mechanism includes an independent return channel (7) formed between the cavity wall and the shell (11) of the cavity (1), the return channel (7) being configured to return coarse powder separated by the grading mechanism to the crushing mechanism, and the return channel (7) isolating the path of the coarse powder in the cavity (1) to the crushing mechanism from the path of the material flow in the crushing mechanism. The drive unit drives the upper and lower gyratory hammer assembly and the grading mechanism.

2. The integrated micro-pulverization and classification equipment for high-speed material flow interaction energy field as described in claim 1, characterized in that, The lower swirling hammer assembly includes a centrifugal plate (6) and a swirling hammer (4), wherein the centrifugal plate (6) is configured to draw air from outside the cavity (1) and generate centrifugal airflow.

3. The integrated micro-pulverization and classification equipment for high-speed material flow interaction energy field as described in claim 2, characterized in that, The upper and lower rotary hammer assemblies rotate in the same or opposite directions.

4. The integrated micro-pulverization and classification equipment for high-speed material flow interaction energy field as described in claim 3, characterized in that, The rotational speeds of the upper and lower rotary hammer assemblies are adjustable.

5. The integrated micro-pulverization and classification equipment for high-speed material flow interaction energy field as described in claim 3, characterized in that, The upper and lower gathering hammer assemblies are arranged facing each other, with the working surface of the upper gathering hammer assembly facing downwards and the working surface of the lower gathering hammer assembly facing upwards.

6. The integrated micro-pulverization and classification equipment for high-speed material flow interaction energy field as described in claim 1, characterized in that, The return channel (7) is the space formed between the shell (11) and the cavity (1).

7. The integrated micro-pulverization and classification equipment for high-speed material flow interaction energy field as described in claim 1, characterized in that, It also includes an exhaust system, which includes an exhaust fan (8) and an air inlet (9). The exhaust fan (8) is outside the cavity (1), and the air inlet (9) is at the bottom of the cavity (1). The exhaust fan (8) is connected to the top of the cavity (1), and the air inlet (9) is located below the centrifugal plate (6) of the lower rotating hammer assembly.

8. The integrated micro-pulverization and classification equipment for high-speed material flow interaction energy field as described in claim 1, characterized in that, The grading mechanism includes centrifugal blades (10) and a main shaft. The centrifugal blades (10) are disposed on the main shaft and are located above the upper gyratory hammer assembly.

9. The integrated micro-pulverization and classification equipment for high-speed material flow interaction energy field as described in claim 8, characterized in that, The centrifugal air generated by the centrifugal blades (10) of the classifier transports the material to the crushing mechanism through the return channel (7).

10. The integrated micro-pulverization and classification equipment for high-speed material flow interaction energy field as described in claim 2, characterized in that, The air intake from the cavity (1) can be continuous or intermittent.

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