Multilayer screening powder screening device

Abstract

The utility model discloses a powder screening device of multi-layer screening, including: round barrel, a plurality of screening barrel, fan, air outlet mechanism and air inlet mechanism, all screening barrel have different diameter, the screening barrel is provided in round barrel and shares the central axis with round barrel, the barrel wall of cylindrical screening barrel is provided with a plurality of screening holes, the diameter of the screening holes of the screening barrel with the smaller diameter is larger than that of the screening holes of the screening barrel with the larger diameter, and flow guide blocks used for guiding airflow flowing out of the screening holes are arranged on the barrel wall of the screening barrel. When the powder screening device with the multi-layer screening function is used for screening powder, the flow guiding blocks are used for guiding the flowing-out direction of airflow from the screening holes, after the powder flows out of the screening barrel through the screening holes, under the action of the airflow, the powder cannot flow back into the screening barrel any more, and the screening efficiency and the screening quality of the screening device are improved.

Description

Technical Field

[0001] This utility model relates to the field of powder processing technology, specifically to a multi-layer sieving powder screening device. Background Technology

[0002] Existing equipment processes powders, and the size of the powder varies depending on the intended use. Therefore, production equipment needs to screen the powder according to its particle size before packaging. Current multi-layer powder screening devices simply use screens with different sized apertures to screen the powder. However, lighter, smaller-sized powders tend to float back into the screen after being filtered out, resulting in poor screening efficiency and quality. Utility Model Content

[0003] To address the problem of poor screening quality in existing screening devices, this invention provides a multi-layer powder screening device. The specific technical solution of this invention is as follows:

[0004] A multi-layer powder screening device includes: a cylindrical drum, several screening drums, a fan, an air outlet mechanism, and an air inlet mechanism. Each screening drum has a different diameter. The screening drums are arranged inside the cylindrical drum and share a central axis with the cylindrical drum. The fan is connected to the air inlet mechanism and is used to supply airflow to the air inlet mechanism. The air inlet mechanism is located at the top of the cylindrical drum and is used to supply airflow into the cylindrical drum. The air outlet mechanism is located at the lower end of the cylindrical drum and is used to guide the airflow in the cylindrical drum to the outside. The cylindrical screening drums have several screening holes on their walls. The screening holes of the smaller diameter screening drums have larger diameters than the screening holes of the larger diameter screening drums. The walls of the screening drums are provided with guide blocks to guide the airflow flowing out of the screening holes.

[0005] Furthermore, the screening bucket includes a support block disposed at the bottom of the screening bucket. When the screening bucket is disposed in a cylindrical container, the bottom of the support block contacts the bottom of the cylindrical container or the screening bucket, and the side of the support block contacts the inner wall of the cylindrical container or the screening bucket.

[0006] Furthermore, the screening barrel includes four guide blocks, which are evenly distributed around the central axis of the screening barrel, and one side of each guide block is fixedly disposed to the outer wall of the screening barrel.

[0007] Furthermore, the height of the guide block is the same as the height of the screening bucket.

[0008] Furthermore, the bottom of the screening barrel is provided with screening holes.

[0009] Furthermore, the air outlet mechanism includes an air outlet pipe and a filter screen. One end of the air outlet pipe is disposed inside the cylinder, and the other end is disposed outside the cylinder. The filter screen is disposed at the air inlet of the air outlet pipe.

[0010] Furthermore, the air intake mechanism includes an air intake pipe and a cylindrical cover. One end of the air intake pipe is located below the cylindrical cover, and the other end is located above the cylindrical cover. The air intake pipe is connected to the fan through the end located above the cylindrical cover.

[0011] Furthermore, the air outlet of the air inlet pipe is horizontal, and the air outlet of the air inlet pipe is located directly above the smallest screening bin in the cylinder.

[0012] Compared with existing technologies, the advantages of this invention are as follows: The multi-layer powder screening device described in this application guides the airflow direction from the screening holes using a guide block. After the powder flows out of the screening barrel through the screening holes, it will not flow back into the screening barrel under the action of the airflow, thus improving the screening efficiency and quality of the device. The cylindrical design, by setting multiple screening barrels, can screen powders of different particle sizes, making it highly practical. Attached Figure Description

[0013] Figure 1 This is an exploded structural diagram of a multi-layer sieving powder screening device in one embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of the cylinder in one embodiment of the present invention;

[0015] Figure 3 This is a top view of the internal structure of the cylinder in one embodiment of the present invention;

[0016] Figure 4 This is one embodiment of the present utility model. Figure 2 An enlarged schematic diagram of point A. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0018] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature, and in this description of the utility model, "at least" means one or more, unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] like Figures 1 to 4As shown, a multi-layer powder screening device includes: a cylindrical barrel 1, several screening barrels 2, a blower 3, an air outlet mechanism, and an air inlet mechanism. Each screening barrel 2 has a different diameter. The screening barrels 2 are arranged inside the cylindrical barrel 1 and share a central axis with the cylindrical barrel 1. That is, the screening barrels 2 are nested sequentially according to their size, with the cylindrical barrel 1 being the outermost layer of all the screening barrels 2. The blower 3 is connected to the air inlet mechanism and is used to supply airflow to the air inlet mechanism. The air inlet mechanism is located at the top of the cylindrical barrel 1 and is used to supply airflow into the cylindrical barrel 1. The air outlet mechanism is located at the lower end of the cylindrical barrel 1 and is used to guide the airflow in the cylindrical barrel 1 to the outside. The cylindrical screening barrels 2 have several screening holes 4 on their walls. In this design, the diameter of the screening hole 4 in the smaller diameter screening barrel 2 is larger than that in the larger diameter screening barrel 2. The powder is screened into the screening barrel 2 from the inside out according to its particle size, from largest to smallest. The barrel wall of the screening barrel 2 is provided with a guide block 5 to guide the airflow from the screening hole 4. The airflow rotates clockwise or counterclockwise in the cylindrical barrel 1. After the powder floats out of the screening hole 4 with the airflow, it first flows outward along the inner wall of the guide block 5. After flowing out of the inner wall of the guide block 5, the outer wall of the guide block 5 guides the powder to flow outward and prevents the powder from flowing back into the screening barrel 2. This ensures that the larger particle size powder is not mixed with too much smaller particle size powder, making it highly practical.

[0024] In one embodiment, the screening barrel 2 includes a support block 6, which is disposed at the bottom of the screening barrel 2. When the screening barrel 2 is placed inside the cylindrical barrel, the bottom of the support block 6 contacts the bottom of the cylindrical barrel 1 or the screening barrel 2, and the side of the support block 6 contacts the inner wall of the cylindrical barrel 1 or the screening barrel 2. The screening barrel 2 is supported by the support block 6 to prevent it from shifting and colliding with the cylindrical barrel 1 during powder screening.

[0025] In one embodiment, the screening barrel 2 includes four guide blocks 5, which are evenly distributed around the central axis of the screening barrel 2, and one side of each guide block 5 is fixedly disposed to the outer wall of the screening barrel 2. The number of guide blocks 5 can also be three, five, or six.

[0026] In one embodiment, the height of the guide block 5 is the same as the height of the screening bucket 2.

[0027] In one embodiment, the bottom of the screening barrel 2 is provided with screening holes 4. The screening holes 4 at the bottom of the screening barrel 2 prevent smaller particle sizes from accumulating at the bottom of the screening barrel 2.

[0028] In one embodiment, the air outlet mechanism includes an air outlet pipe 7 and a filter screen 8. One end of the air outlet pipe 7 is disposed inside the cylindrical barrel 1, and the other end is disposed outside the cylindrical barrel 1. The filter screen 8 is disposed at the air inlet of the air outlet pipe 7. The filter screen is used to prevent powder in the cylindrical barrel from flowing out of the cylindrical barrel, and the diameter of the screening holes of the filter screen is smaller than the diameter of the smallest screening hole among several screening barrels.

[0029] In one embodiment, the air intake mechanism includes an air intake pipe 10 and a cylindrical cover 9. One end of the air intake pipe 10 is located below the cylindrical cover 9, and the other end is located above the cylindrical cover 9. The air intake pipe 10 is connected to the fan 3 through the end located above the cylindrical cover 9.

[0030] In one embodiment, the air outlet of the air inlet pipe 10 is in a horizontal direction, and the air outlet of the air inlet pipe 10 is located directly above the smallest screening bin 2 in the cylindrical barrel 1.

[0031] The multi-layer powder screening device described in this application guides the airflow from the screening holes 4 through the guide block 5. After the powder flows out of the screening barrel 2 through the screening holes 4, it will not flow back into the screening barrel 2 under the action of the airflow, thus improving the screening efficiency and screening quality of the device. The cylindrical barrel 1, by setting multiple screening barrels 2, can screen powders of different particle sizes, making it highly practical.

[0032] In the description of this specification, the terms "in one embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. The connection methods linked in the description of this specification have significant effects and practical utility.

[0033] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions based on this utility model using techniques known in the art all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. A multi-layer sieving powder screening device, characterized in that, include: The system comprises a cylindrical barrel, several screening barrels, a fan, an air outlet mechanism, and an air inlet mechanism. Each screening barrel has a different diameter and is positioned inside the cylindrical barrel along a central axis. The fan is connected to the air inlet mechanism and supplies airflow to it. The air inlet mechanism is located at the top of the cylindrical barrel and supplies airflow into it. The air outlet mechanism is located at the bottom of the cylindrical barrel and guides the airflow from the barrel to the outside. The cylindrical screening barrels have several screening holes on their walls, with the smaller diameter screening barrels having larger diameter screening holes. The walls of the screening barrels are equipped with guide blocks to guide the airflow from the screening holes.

2. The multi-layer sieving powder screening device according to claim 1, characterized in that, The screening bin includes a support block disposed at the bottom of the screening bin. When the screening bin is disposed in a cylindrical container, the bottom of the support block contacts the bottom of the cylindrical container or the screening bin, and the side of the support block contacts the inner wall of the cylindrical container or the screening bin.

3. The multi-layer sieving powder screening device according to claim 2, characterized in that, The screening barrel includes four guide blocks, which are evenly distributed around the central axis of the screening barrel, and one side of each guide block is fixedly installed to the outer wall of the screening barrel.

4. The multi-layer sieving powder screening device according to claim 3, characterized in that, The height of the guide block is the same as the height of the screening bucket.

5. The multi-layer sieving powder screening device according to claim 2, characterized in that, The bottom of the screening bucket is provided with screening holes.

6. The multi-layer sieving powder screening device according to claim 1, characterized in that, The air outlet mechanism includes an air outlet pipe and a filter screen. One end of the air outlet pipe is located inside the cylinder, and the other end is located outside the cylinder. The filter screen is located at the air inlet of the air outlet pipe.

7. The multi-layer sieving powder screening device according to claim 1, characterized in that, The air intake mechanism includes an air intake pipe and a cylindrical cover. One end of the air intake pipe is located below the cylindrical cover, and the other end is located above the cylindrical cover. The air intake pipe is connected to the fan through the end located above the cylindrical cover.

8. The multi-layer sieving powder screening device according to claim 7, characterized in that, The air outlet of the air inlet pipe is horizontal, and the air outlet of the air inlet pipe is located directly above the smallest screening barrel in the cylinder.

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