Integrated powder selecting equipment

Abstract

The utility model relates to integrated powder selecting equipment which comprises a box body, an upper blast plate, a vibrating screen and a lower blast plate, the box body is hollow, the upper blast plate and the lower blast plate are installed in the box body at intervals from top to bottom, and the vibrating screen is installed between the upper blast plate and the lower blast plate. A feeding port of the vibrating screen is communicated with a discharging port of the upper air blowing plate, a discharging port of the vibrating screen is located above the lower air blowing plate, and a feeding hole and a powder discharging hole are further formed in the box body. And the double air blowing plates are designed in the box body, and the vibrating screen is integrated between the upper air blowing plate and the lower air blowing plate and used for removing peculiar smells in raw materials and assisting powder selection, so that the powder selection efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of powder classifier technology, and in particular to an integrated powder classifier. Background Technology

[0002] Air classifiers are mechanical devices used for classifying powders. They are typically used in powder processing to screen, separate, and classify powder raw materials to obtain powder products with different particle size distributions. Air classifiers can be classified into different types according to different classification standards. Common air classifiers include: based on the classification principle, they can be divided into centrifugal, gravity, pneumatic, and vibratory types, etc. Based on the application, they can be divided into coal powder classifiers, calcium powder classifiers, cement classifiers, glass powder classifiers, etc. Based on the structural form, they can be divided into vertical, horizontal, inclined, and combined types, etc. To improve powder selection accuracy, the applicant previously applied for and was granted a patent (patent number 202420128054.5) for a novel powder selection device. This device innovatively uses a blower plate, allowing for the flow of quicksand-like materials by adjusting the blower plate's air pressure and speed. During this flow, small dust particles (0.035–0.075 mm) are blown up, thus completing the powder selection process. This large-area air separation within a sealed space ensures high accuracy and quality. However, in actual production, we found that while single-blower plate powder selection achieves high accuracy, its efficiency is relatively low. Therefore, we have made improvements to achieve even higher efficiency. Utility Model Content

[0003] Therefore, it is necessary to provide an integrated powder classifier to address the above issues.

[0004] An integrated powder classifier includes a housing, an upper blower plate, a vibrating screen, and a lower blower plate. The housing is hollow. The upper and lower blower plates are installed in the housing at intervals from top to bottom. The vibrating screen is installed between the upper and lower blower plates. The inlet of the vibrating screen is connected to the outlet of the upper blower plate. The outlet of the vibrating screen is located above the lower blower plate. The housing is also provided with a feed hole and a powder outlet hole.

[0005] Preferably, heating wires are provided inside the upper and lower blower plates.

[0006] Preferably, the heating wire is heated by electromagnetic induction.

[0007] Preferably, the bottom of the box is provided with a discharge hole.

[0008] Preferably, the upper blower plate and the lower blower plate divide the box body to form a first powder outlet area and a second powder outlet area, and the two powder outlet holes are respectively connected to the first powder outlet area and the second powder outlet area.

[0009] Preferably, a volute fan is installed at the outlet end of the powder outlet.

[0010] Preferably, both the upper and lower blower plates are provided with guide plates on their surfaces.

[0011] Preferably, the blowing direction of the upper and lower blower plates is adjustable.

[0012] The advantages of this utility model are: the double blower plate design inside the box, and the integrated vibrating screen between the upper blower plate and the lower blower plate, which is used to remove odors from raw materials and assist in powder selection, greatly improving powder selection efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the integrated powder classifier structure in one embodiment;

[0014] Figure 2 This is a top view of the upper blower plate;

[0015] Figure 3 This is a top view schematic diagram of another embodiment of the upper blower plate;

[0016] Figure 4 This is a top view schematic diagram of another embodiment of the upper blower plate. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0018] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] like Figure 1As shown, the integrated powder classifier includes a housing 1, an upper blower plate 2, a vibrating screen 3, and a lower blower plate 4. The housing 1 is hollow. The upper blower plate 2 and the lower blower plate 3 are installed inside the housing 1 at intervals from top to bottom. The vibrating screen 3 is installed between the upper blower plate 2 and the lower blower plate 4. The inlet of the vibrating screen 3 is connected to the outlet of the upper blower plate 2, and the outlet of the vibrating screen 3 is located above the lower blower plate 4. The housing 1 is also provided with a feed hole 11 and a powder outlet hole 12. Specifically, the housing 1 is made of metal or plastic, mainly to form a sealed powder classifier environment to prevent dust from overflowing and polluting the environment. The metal housing 1 has a strong structure and a long service life. The shape of the housing 1 can be square, cylindrical, or other shapes, without specific limitations. Similarly, the upper blower plate 2 and the lower blower plate 4 can be designed as square plates, round plates, or other shapes to match the cross-sectional area of ​​the housing 1. The upper blower plate 2 and the lower blower plate 4 have the same structure as those in application number 202420128054.5, both being hollow plates. Several air caps can be detachably installed on the plate surface for air outlet. Both the upper blower plate 2 and the lower blower plate 4 are connected to external blower equipment. Gas is ejected from the air caps. Because the air caps blow out high-pressure airflow, the sand-like raw material is spread evenly on the plate surface of the upper blower plate 2, tumbling and surging. Smaller dust particles are blown up and float in the housing 1, waiting to be extracted, thus completing the powder selection. Adjusting the power of the blower equipment can adjust the air pressure and air velocity at the outlet of the air caps, thereby screening the material to the particle size required by the user. Specifically, in this design, we mainly select material with a particle size of 0.035~0.075mm. Larger particles, due to their greater weight, will settle on the upper blower plate 2, while smaller dust particles in the raw material will be blown up, float in the air, and be extracted, completing one stage of powder selection. Once a significant amount of the screened raw material has accumulated on the upper blower plate 2, it will flow down like quicksand into the vibrating screen 3. In this embodiment, a high-frequency vibrating screen is used, with a vibration frequency exceeding 3000Hz. The vibrating screen 3 breaks up the agglomerated raw material, loosening it and improving powder selection efficiency, while ensuring the stability of the output dust particle size and the consistency of product quality. Finally, the output powder falls onto the lower blower plate 4 at the bottom for a second stage of air classification, the principle of which is the same as that of the upper blower plate 2, and will not be elaborated further here. It should be noted that when dust (0.035~0.075mm) floats inside chamber 1, the user can connect a pipe to the chamber to extract the dust (0.035~0.075mm). Larger particles will settle at the bottom of chamber 1 and be discharged through the pipe. The upper and lower double-plate design with a vibrating screen 3 greatly improves powder selection efficiency and prevents raw material caking, which could hinder the forced-air powder selection process.

[0021] Specifically, heating wires are installed inside the upper blower plate 2 and the lower blower plate 3. Because some raw materials may not be dry enough and are relatively moist inside, with small particles, the moisture can cause caking. By blowing out hot air for air separation, we can dry the moist powder.

[0022] Specifically, the heating wire is heated by electromagnetic induction. The electromagnetic induction heating system is arranged in the air duct within the upper blower plate 2 and the lower blower plate 3. The principle is that when current passes through the electromagnetic coil, an alternating magnetic field is generated around it. This magnetic field penetrates the metal air duct, causing eddy currents to form inside. As these eddy currents flow through the metal, they generate heat due to resistance, thus raising the temperature of the fluid inside the air duct. A temperature sensor can be equipped to monitor the fluid temperature in real time during electromagnetic induction heating of the air duct. By controlling the magnitude and frequency of the current, the heating power can be adjusted to ensure heating effect and energy efficiency. When the fluid temperature reaches the set value, the heating power will automatically decrease or stop heating to prevent overheating and energy waste. Compared with traditional resistance wire heating, electromagnetic induction heating has a high thermal energy conversion efficiency, with a heat utilization rate of over 95%, resulting in significant energy savings. In other embodiments, resistance wires or other methods can also be used to heat the airflow; any method that can heat the airflow is acceptable.

[0023] like Figure 1 As shown, the bottom of the box 1 is provided with a discharge hole 13 to prevent the remaining raw materials after powder selection from accumulating in the box 1. The remaining raw materials can be sent to the crusher, crushed into smaller particles, and then sent back to the box 1 for powder selection. This process is repeated to reduce the raw material cost of powder selection.

[0024] like Figure 1 As shown, the upper blower plate 2 and the lower blower plate 3 divide the housing 1 to form a first powder outlet area 100 and a second powder outlet area 200. The two powder outlet holes 12 are respectively connected to the first powder outlet area 100 and the second powder outlet area 200. Specifically, the division of the housing by the upper blower plate 2 and the lower blower plate 3 into the first powder outlet area 100 and the second powder outlet area 200 allows dust to float within these areas, facilitating dust extraction through the powder outlet holes 12 and improving powder selection efficiency.

[0025] Specifically, a volute fan 300 is installed at the outlet end of the powder outlet 12 to extract the dust floating in the housing 1, thereby improving the powder selection efficiency.

[0026] like Figures 2-4As shown, guide plates 21 are provided on the surfaces of the upper blower plate 2 and the lower blower plate 3. The guide plates 21 can be racetrack-shaped, S-shaped, or other shapes, as long as the quicksand-like raw material flows along the guide plates 21, guiding the raw material to flow down from the surfaces of the upper blower plate 2 and the lower blower plate 3, thus playing a guiding role and preventing the raw material from accumulating on the surfaces of the upper blower plate 2 and the lower blower plate 3.

[0027] Specifically, the blowing direction of the upper blower plate 2 and the lower blower plate 3 is adjustable because the air cap is detachably installed on the upper blower plate 2 and the lower blower plate 3. By replacing the air cap with an air outlet of different angles, the air outlet direction can be adjusted. For example, the air cap can be vertically connected to the upper blower plate 2 and the lower blower plate 3 for blowing, or the air cap can have a horizontal opening on the side for air outlet, or the air cap can have an upward-sloping air outlet on the side. The specific angle is not limited. By replacing the air cap with different air outlets, the design purpose of adjustable blowing is achieved, realizing multi-angle blowing to select powder without leaving any dead corners.

[0028] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An integrated powder classifier, characterized in that: The device includes a housing, an upper blower plate, a vibrating screen, and a lower blower plate. The housing is hollow. The upper and lower blower plates are installed in the housing from top to bottom at intervals. The vibrating screen is installed between the upper and lower blower plates. The inlet of the vibrating screen is connected to the outlet of the upper blower plate. The outlet of the vibrating screen is located above the lower blower plate. The housing is also provided with a feed hole and a powder outlet hole.

2. The integrated powder classifier as described in claim 1, characterized in that: Heating wires are installed inside the upper and lower blower plates.

3. The integrated powder classifier as described in claim 2, characterized in that: The heating wire is heated by electromagnetic induction.

4. The integrated powder classifier as described in claim 1, characterized in that: The bottom of the box is provided with a discharge hole.

5. The integrated powder classifier as described in claim 1, characterized in that: The upper and lower blower plates divide the housing to form a first powder outlet area and a second powder outlet area, and the two powder outlet holes are respectively connected to the first powder outlet area and the second powder outlet area.

6. The integrated powder classifier as described in claim 5, characterized in that: A volute fan is installed at the outlet end of the powder outlet.

7. The integrated powder classifier as described in claim 1, characterized in that: Both the upper and lower blower plates are equipped with guide plates.

8. The integrated powder classifier as described in claim 1, characterized in that: The blowing direction of the upper and lower blower plates is adjustable.

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