Screening machine for processing white corundum micro powder

Abstract

The utility model discloses a screening machine for processing white corundum micro powder, which comprises a vibration screening machine, the top end face of the vibration screening machine is provided with a dust falling and suppressing assembly, and the top port of the vibration screening machine is provided with a material storage assembly; the vibration screening machine comprises a base, a discharging hopper fixed to the upper surface of the base and 3-5 layers of screening frames fixed to the upper end face of the discharging hopper. According to the vibration screening machine, the combination of multiple layers of screens and compound vibration springs is adopted, multi-stage particle size precise separation is achieved, equipment loss caused by rigid vibration is reduced through elastic supporting, and the service life is prolonged; a discharging valve of the storage assembly can quantitatively regulate and control the flow of the raw materials, overload of a screen is avoided, and meanwhile continuous and stable feeding can be achieved through linkage with a vibration motor; the dust falling and suppressing assembly and adsorption cotton form negative pressure suction-filtering double-layer protection through a servo fan, screened flying dust is effectively prevented from overflowing, and the long-term dust falling efficiency is guaranteed due to the characteristic that the adsorption cotton can be rapidly replaced.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen equipment technology, specifically to a screening machine for processing white corundum micro powder. Background Technology

[0002] In the production and processing of white fused alumina micro powder, the screening process is a crucial step in ensuring product quality. White fused alumina micro powder, as a high-performance abrasive, is characterized by high hardness and sharp particle shape, and is widely used in ceramics, refractory materials, precision grinding, and other fields. However, during the screening process, micro powder particles are prone to generating dust due to electrostatic adsorption, mechanical vibration, and other factors, leading to excessive dust concentrations in the production environment. This not only endangers the health of operators but may also cause material waste and equipment damage. To address these issues, a screening machine solution for processing white fused alumina micro powder is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a screening machine for processing white corundum micro powder, so as to solve the shortcomings mentioned in the background art. To address the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] It includes a vibrating screen, wherein a dust suppression component is provided on the top end face of the vibrating screen, and a material storage component is installed on the top port of the vibrating screen;

[0005] The vibrating screening machine includes a base, a hopper fixed on the upper surface of the base, and 3-5 layers of screen frames fixed on the upper end face of the hopper. Each screen frame has a screen mesh fixed inside. Vibrating motors are installed on the left and right side walls of the hopper.

[0006] The material storage assembly includes a micro powder hopper and a discharge valve located between the lower port of the micro powder hopper and the upper port of the vibrating screen.

[0007] The dust suppression component includes an inclined tube, absorbent cotton that is snapped into the lower part of the inclined tube's inner cavity, and a servo fan that is fixedly connected to the upper part of the inclined tube's inner cavity.

[0008] As a preferred embodiment of this utility model: each of the four corners of the top surface of the base is fixedly connected with a resonant spring, and the top end of the resonant spring is fixedly connected to the four corners of the bottom surface of the hopper.

[0009] As a preferred embodiment of this utility model: the bottom surface of the hopper is provided with a discharge port, and the upper end face of the hopper is fixedly connected to the bottom end face of the bottom screen frame.

[0010] As a preferred embodiment of this utility model: a feeding trough is fixedly connected to the side wall of the screen frame, and the feeding inlet of the feeding trough is located above the screen.

[0011] As a preferred embodiment of this utility model: an end cap is fixedly connected to the top end face of the sieve frame, and a threaded hole is provided on the top of the end cap.

[0012] As a preferred embodiment of this utility model: the upper port of the feeding valve is connected to the bottom port of the micro powder hopper, and the lower port of the feeding valve is connected to the top port of the end cap.

[0013] As a preferred embodiment of this utility model: the outer ring surface of the inclined tube is provided with a thread that matches the threaded hole.

[0014] As a preferred embodiment of this utility model: the servo fan discharges air from the inclined pipe and inside the screen frame to absorb and collect dust generated inside the screen frame due to the vibration of the screen.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] The vibrating screen uses a combination of multi-layer screens and re-vibrating springs to achieve precise separation of multi-level particle sizes. The elastic support reduces the wear and tear on the equipment caused by rigid vibration, extending its service life. The material storage component's discharge valve can quantitatively regulate the raw material flow rate to avoid screen overload. At the same time, it can achieve continuous and stable material supply by linking with the vibrating motor. The dust suppression component forms a negative pressure suction-filtration double-layer protection through a servo fan and adsorption cotton, effectively preventing the overflow of screening dust. The quick-replaceability of the adsorption cotton ensures long-term dust suppression efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of a vibrating screen.

[0019] Figure 2 This is a schematic diagram of the disassembled vibrating screen.

[0020] Figure 3 This is a schematic diagram of the storage compartment;

[0021] Figure 4 This is a schematic diagram of the end cover of the screening machine;

[0022] Figure 5 This is a schematic diagram of a dust suppression and ash removal component.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Vibrating screen; 11. Base; 12. Feed hopper; 13. Screen; 14. Screen frame; 15. End cover; 16. Feed trough; 17. Vibrating motor; 18. Re-vibration spring; 19. Threaded hole; 2. Material storage assembly; 21. Micro powder hopper; 22. Feed valve; 23. Door; 3. Dust suppression assembly; 31. Inclined tube; 32. Absorbent cotton; 33. Servo fan. Detailed Implementation

[0025] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0026] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0027] Example 1: A screening machine for processing white corundum micro powder includes a vibrating screen 1, a storage assembly 2, and a dust suppression assembly 3. The base 11 of the vibrating screen 1 is elastically connected to the feeding hopper 12 via four sets of reciprocating springs 18. Vibrating motors 17 are symmetrically installed on both sides of the feeding hopper 12 to achieve high-frequency vibration. Four layers of screen frames 14 are stacked sequentially on the top of the feeding hopper 12. Each layer of screen frame 14 contains screens 13 of different mesh sizes. Feeding grooves 16 are welded to the side walls of the screen frames 14 for graded discharge of the screened micro powder. An end cap 15 is bolted to the upper surface of the top screen frame 14. A threaded hole 19 is formed in the center of the end cap 15 to connect to the dust suppression assembly. The micro powder hopper 21 of the storage assembly 2 is threadedly sealed to the end cap 15 via a feeding valve 22. The feeding valve 22 is a butterfly valve structure, allowing manual adjustment of the feeding flow rate. The inclined tube 31 of the dust suppression component 3 is screwed tightly to the threaded hole 19 of the end cap 15 via external threads. A servo fan 33 and absorbent cotton 32 are sequentially arranged from top to bottom inside the inclined tube 31. When the servo fan 33 operates, it creates a negative pressure within the screen frame 14, causing dust particles to enter the inclined tube 31 with the airflow and be trapped by the absorbent cotton 32. During operation, micro-powder enters the screen frame 14 quantitatively through the discharge valve 22 of the micro-powder hopper 21. Multi-stage sieving is completed under the action of the vibrating motor 17, while the servo fan 33 continuously extracts dust to ensure a clean working environment.

[0028] Example 2: Optimizing screening efficiency and dust suppression effect based on Example 1. The vibrating screen 1 adopts a five-layer screen frame structure 14, with the screen mesh 13 increasing sequentially from top to bottom to achieve precise five-level grading of micro powder. The threaded hole 19 of the end cap 15 is changed to a dual-channel design, with the main channel connecting to the dust suppression component 3 and the secondary channel reserving a spare interface. The micro powder hopper 21 of the storage component 2 is equipped with a material level sensor, and automatic material replenishment control is achieved through the electric actuator of the discharge valve 22. The inclined tube 31 of the dust suppression component 3 adopts a modular design, the absorbent cotton 32 can be quickly disassembled and replaced, and the servo fan 33 is equipped with a frequency converter to dynamically adjust the wind speed according to the dust concentration. During equipment operation, the micro powder is evenly distributed through the spiral feeding mechanism of the feeding valve 22, and the five-layer screen 13 works synchronously. Micro powder of different particle sizes is discharged from the corresponding feeding trough 16. The dust enters the inclined tube 31 through the double-channel threaded hole 19, is captured by the high-speed rotating servo fan 33 and adsorbed onto the adsorption cotton 32, thus achieving efficient dust reduction.

[0029] Example 3: This example employs a modular design to meet the needs of mass production. The base 11 of the vibrating screen 1 adopts a split structure, allowing for the rapid assembly of multiple sets of feeding hoppers 12 and screen frames 14 to achieve parallel screening at multiple stations. A guide plate is added to the bottom of the feeding hopper 12 to guide the screened micro powder into different collection bins. The micro powder hopper 21 of the storage component 2 is upgraded to a vacuum feeding system, directly connected to the raw material bins via a negative pressure pipeline. The feeding valve 22 uses a rotary feeder to achieve continuous and stable feeding. The inclined tube 31 of the dust suppression component 3 is replaced with a ring-shaped dust collection hood structure, covering the top openings of all screen frames 14. Multiple sets of servo fans 33 and ring-shaped adsorption cotton 32 are installed inside to form a three-dimensional dust suppression net. When the equipment is running, multiple sets of vibrating screens 1 start simultaneously. Micro powder is quickly filled into micro powder hopper 21 by the vacuum feeding system and quantitatively distributed to each screening unit through the discharge valve 22. During the screening process, flying dust is fully captured by the annular dust collection hood, and the servo fan 33 independently adjusts the air volume according to the dust concentration in each area.

[0030] Based on the above-described superior technical solutions, the workflow will be further explained.

[0031] The operator loads the white corundum micro powder raw material to be screened into the micro powder hopper 21 of the storage component 2. The opening of the discharge port is controlled by the adjusting knob of the discharge valve 22 or the electric actuator, so that the micro powder enters the top screen frame 14 of the vibrating screen 1 at a preset flow rate. The base 11 of the vibrating screen 1 elastically supports the discharge hopper 12 through the re-vibration spring 18. When the two vibrating motors 17 start synchronously, the high-frequency vibration is transmitted to the multi-layer screen frame 14, causing the internal screen 13 to vibrate at high frequency. Under the action of gravity and vibration, the micro powder passes through the screen 13 layer by layer. Micro powder of different particle sizes is trapped in the corresponding screen layer due to the difference in particle size. Micro powder of qualified particle size passes through the screen 13 and falls into the next screen frame 14 until it reaches the bottom of the discharge hopper 12. Finally, it is discharged through the discharge port at the bottom of the discharge hopper 12. The micro powder trapped above each layer of screen 13 is discharged along the discharge trough 16 on the side wall of the screen frame 14, forming a graded discharge.

[0032] During the screening process, the servo fan 33 of the dust suppression component 3 operates continuously, forming a negative pressure channel through the inclined tube 31 and the threaded hole 19 of the end cover 15, drawing the dust generated inside the screen frame 14 due to vibration into the inner cavity of the inclined tube 31. As the dust rises with the airflow, it is first captured and initially intercepted by the blades of the servo fan 33, and then further adsorbed and filtered by the absorbent cotton 32 filled below. Clean air is discharged through the top of the inclined tube 31. When the dust on the surface of the absorbent cotton 32 accumulates to a certain extent, the operator can rotate and remove the inclined tube 31, take out the absorbent cotton 32 for cleaning or replacement, and reinstall it into the inner cavity of the inclined tube 31 for secure fastening.

[0033] The discharge valve 22 can be linked with the vibrating motor 17 and the servo fan 33: when the material level sensor in the micro powder hopper 21 detects insufficient raw material, the system automatically stops the vibrating motor 17 and closes the discharge valve 22, while simultaneously reducing the speed of the servo fan 33 to reduce energy consumption; after replenishing the raw material, the system sequentially starts the discharge valve 22, the vibrating motor 17, and the servo fan 33 according to a preset program to resume the screening operation. During the screening process, the operator can monitor the load rate, discharge flow rate, and dust reduction efficiency of each layer of screen 13 in real time through the touch screen, and manually adjust the vibration frequency, discharge speed, or fan air volume as needed. After the equipment is shut down, the screen frame 14 and screen 13 can be quickly disassembled for cleaning and maintenance, or the absorbent cotton 32 can be replaced for the next use.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A screening machine for processing white corundum micro powder, comprising a vibrating screening machine (1), characterized in that: A dust suppression component (3) is provided on the top end face of the vibrating screen (1), and a material storage component (2) is installed on the top port of the vibrating screen (1). The vibrating screening machine (1) includes a base (11), a hopper (12) fixed on the upper surface of the base (11), and 3-5 layers of screen frames (14) fixed on the upper end face of the hopper (12). Each screen frame (14) has a layer of screen mesh (13) fixed inside. Vibrating motors (17) are installed on the left and right side walls of the hopper (12). The storage assembly (2) includes a micro powder hopper (21) and a discharge valve (22) located between the lower port of the micro powder hopper (21) and the upper port of the vibrating screen (1); The dust suppression component (3) includes an inclined tube (31), an absorbent cotton (32) that is snapped into the lower part of the inner cavity of the inclined tube (31), and a servo fan (33) that is fixedly connected to the upper part of the inner cavity of the inclined tube (31).

2. The screening machine for processing white fused alumina micro powder according to claim 1, characterized in that: The four corners of the top surface of the base (11) are fixedly connected with resonant springs (18), and the top ends of the resonant springs (18) are fixedly connected to the four corners of the bottom surface of the hopper (12).

3. The screening machine for processing white fused alumina micro powder according to claim 1, characterized in that: The bottom surface of the hopper (12) is provided with a discharge port, and the upper end face of the hopper (12) is fixedly connected to the bottom end face of the bottom screen frame (14).

4. A screening machine for processing white fused alumina micro powder according to claim 1, characterized in that: The side walls of the screen frame (14) are all fixedly connected with a feeding trough (16), and the feeding inlet of the feeding trough (16) is located above the screen (13).

5. A screening machine for processing white fused alumina micro powder according to claim 1, characterized in that: An end cap (15) is fixedly connected to the top end face of the sieve frame (14) mentioned above, and a threaded hole (19) is provided on the top of the end cap (15).

6. A screening machine for processing white fused alumina micro powder according to claim 1, characterized in that: The upper port of the discharge valve (22) is connected to the bottom port of the micro powder hopper (21), and the lower port of the discharge valve (22) is connected to the top port of the end cap (15).

7. A screening machine for processing white fused alumina micro powder according to claim 1, characterized in that: The outer ring surface of the inclined tube (31) is provided with a thread that matches the threaded hole (19).

8. A screening machine for processing white fused alumina micro powder according to claim 1, characterized in that: The servo fan (33) discharges air from the inclined pipe (31) and the inside of the screen frame (14) to absorb and collect dust generated inside the screen frame (14) due to the vibrating screen.

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