Airflow classification equipment

Abstract

The utility model discloses airflow classification equipment, and belongs to the technical field of material screening. The airflow classification equipment comprises a barrel, a feeding pipe and a classification wheel. The cylinder is provided with a containing cavity, and a first discharging port and a second discharging port which communicate with the containing cavity are formed in the two ends of the cylinder correspondingly. The feeding pipe is located between the first discharging opening and the second discharging opening, one end of the feeding pipe is tangent to the outer circumferential wall of the barrel and communicates with the containing cavity, and the other end of the feeding pipe is obliquely arranged towards the second discharging opening in the direction away from the axis of the barrel; the grading wheel is rotationally arranged in the containing cavity and located between the feeding pipe and the second discharging opening. According to the airflow classification equipment, the material screening effect is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of material screening, and in particular to an airflow classification device. Background Art

[0002] Air classifier is an airflow classification equipment. It is composed of a classification system with cyclone separator, dust collector and induced draft fan. Air classifier uses the suction force of the fan to make the material rise to the classification area with the airflow. After the material reaches the classification area, the centrifugal force generated by the high-speed rotating classification impeller separates the coarse and fine materials, thus completing the material screening.

[0003] However, because the distance between the feed port and the discharge port of the existing air flow classifier is too close, the material may be carried away by the suction force of the fan through the classifying impeller before it is screened. In addition, the impact force of the feed port and the airflow of coarse materials thrown out by the classifying impeller also affect each other, resulting in poor material screening effect. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide an airflow classification device.

[0005] To solve the above technical problems, this application provides:

[0006] An airflow classification device, comprising:

[0007] The cylinder has a receiving cavity, and two ends thereof are respectively provided with a first discharge port and a second discharge port communicating with the receiving cavity;

[0008] a feed pipe located between the first discharge port and the second discharge port, one end of the feed pipe being tangent to the outer circumferential wall of the cylinder and communicating with the accommodating cavity, and the other end being inclined away from the axis of the cylinder toward the second discharge port;

[0009] The grading wheel is rotatably disposed in the accommodating cavity and is located between the feed pipe and the second discharge port.

[0010] In addition, the airflow classification device according to the present application may also have the following additional technical features:

[0011] In some embodiments of the present application, the inclination angle of the feed pipe is a, which satisfies 10 degrees ≤ a ≤ 30 degrees.

[0012] In some embodiments of the present application, the classifying wheel is tiltedly disposed in the accommodating cavity and has an angle consistent with that of the feed pipe.

[0013] In some embodiments of the present application, the air flow classification device also includes a compressed air pipe, one end of the compressed air pipe is tangent to the outer circumferential wall of the cylinder and is connected to the accommodating cavity, and the other end is inclined toward the second discharge port along the axial direction away from the cylinder, and the inclination angles of the compressed air pipe, the classification wheel and the feed pipe are consistent.

[0014] In some embodiments of the present application, a plurality of compressed air pipes are provided, and the plurality of compressed air pipes are spaced apart along the axial direction and / or circumferential direction of the cylinder.

[0015] In some embodiments of the present application, the airflow classification device further includes a driving member, and an output end of the driving member is connected to the classification wheel.

[0016] In some embodiments of the present application, the airflow classification device further includes a first discharge pipe and a second discharge pipe, the first discharge pipe is connected to the first discharge port, and the second discharge pipe is connected to the second discharge port.

[0017] In some embodiments of the present application, the airflow classification device further includes a first collection box and a second collection box, the first discharge pipe is respectively connected to the first discharge port and the first collection box, and the second discharge pipe is respectively connected to the second discharge port and the second collection box.

[0018] In some embodiments of the present application, the airflow classification device further includes a negative pressure fan, and the second collecting box is connected to the second discharge pipe and the negative pressure fan respectively.

[0019] In some embodiments of the present application, the airflow classification device further includes a material guide valve, and the material guide valve is provided on the first discharge pipe.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] The present application proposes an airflow classification device, which includes a cylinder, a feed pipe and a classification wheel. The cylinder has a receiving cavity, and has a first discharge port and a second discharge port connected to the receiving cavity at both ends. By arranging a feed pipe between the first discharge port and the second discharge port, one end of the feed pipe is tangent to the outer circumferential wall of the cylinder and connected to the receiving cavity, and the other end of the feed pipe is inclined toward the second discharge port in a direction away from the axis of the cylinder. In this way, after the material enters the receiving cavity through the feed pipe, it first rotates downward around the axis of the cylinder, so that the coarse particles gather at the bottom of the cylinder and are discharged through the first discharge port, while the fine particles rotate upward from the bottom of the cylinder around the axis of the cylinder under the suction force of the negative pressure fan. At the same time, by arranging a high-speed rotating classification wheel between the feed pipe and the second discharge port, the fine particles are centrifugally classified, so that the ultrafine particles are discharged from the second discharge port through the classification wheel, and the fine particles are thrown out by the classification wheel and rotate downward around the axis of the cylinder again to gather at the bottom of the cylinder and be discharged through the first discharge port. The airflow classification equipment provided in the present application extends the flow path of the material, reduces the mutual influence between the feed airflow and the airflow of fine particle materials thrown out by the classification wheel, thereby effectively improving the material screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic structural diagram of the airflow classification equipment in some embodiments of the present application is shown.

[0024] Description of main component symbols:

[0025] 100-airflow classification equipment;

[0026] 110 - cylinder; 111 - accommodating chamber; 112 - first discharge port; 113 - second discharge port;

[0027] 120-feeding pipe;

[0028] 130-compressed air pipe;

[0029] 140- driving member;

[0030] 150-first discharge pipe;

[0031] 160- second discharge pipe;

[0032] 170-Second collection box;

[0033] 180-negative pressure fan;

[0034] 190-Guide valve. DETAILED DESCRIPTION

[0035] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0038] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0039] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] like Figure 1 As shown, an embodiment of the present application provides an airflow classification device 100, which is mainly used for screening materials. The airflow classification device 100 includes a cylinder 110, a feed pipe 120 and a classification wheel.

[0041] The barrel 110 has a housing cavity 111, and has a first discharge port 112 and a second discharge port 113 at both ends, respectively, which are in communication with the housing cavity 111. The feed pipe 120 is located between the first discharge port 112 and the second discharge port 113. One end of the feed pipe 120 is tangential to the outer circumferential wall of the barrel 110 and in communication with the housing cavity 111, while the other end is inclined toward the second discharge port 113 in a direction away from the axis of the barrel 110. The classifying wheel is rotatably disposed within the housing cavity 111 and is located between the feed pipe 120 and the second discharge port 113.

[0042] The air flow classification device 100 provided in the embodiment of the present application is configured to set a feed pipe 120 between the first discharge port 112 and the second discharge port 113, with one end of the feed pipe 120 being tangent to the outer circumferential wall of the cylinder 110 and connected to the accommodating cavity 111, and the other end of the feed pipe 120 being inclined toward the second discharge port 113 in a direction away from the axis of the cylinder 110. In this way, after the material enters the accommodating cavity 111 through the feed pipe 120, it first rotates downward around the axis of the cylinder 110, thereby causing the coarse particle material to gather at the bottom of the cylinder 110 and be discharged through the first discharge port 112, while the fine particle material rotates upward from the bottom of the cylinder 110 around the axis of the cylinder 110 under the suction force of the negative pressure fan 180.

[0043] At the same time, a high-speed rotating classifying wheel is provided between the feed pipe 120 and the second discharge port 113 to centrifugally classify the fine particle material, so that the ultrafine particle material is discharged from the second discharge port 113 through the classifying wheel, and the fine particle material is thrown out by the classifying wheel and rotates again around the axis of the cylinder 110 downward to converge at the bottom of the cylinder 110 and discharged through the first discharge port 112. The airflow classifying device 100 provided in this application extends the flow path of the material, reduces the mutual influence between the feed airflow and the fine particle material airflow thrown out by the classifying wheel, and thus effectively improves the material screening effect.

[0044] like Figure 1 As shown, in one embodiment of the present application, optionally, the inclination angle of the feed pipe 120 is a, satisfying 10 degrees ≤ a ≤ 30 degrees.

[0045] In this embodiment, by controlling the inclination angle a of the feed pipe 120 to be between 10 degrees and 30 degrees, this can, on the one hand, prevent the inclination angle of the feed pipe 120 from being too small, resulting in the material being unable to rotate downward around the axis of the cylinder 110 after entering the accommodating chamber 111 through the feed pipe 120, thereby causing the material to directly enter the grading wheel, shortening the material flow path and affecting the material screening effect. On the other hand, it can also prevent the inclination angle of the feed pipe 120 from being too large, resulting in the material quickly rotating downward around the axis of the cylinder 110 after entering the accommodating chamber 111 through the feed pipe 120, shortening the material's spiral flow path and affecting the material screening effect.

[0046] For example, the inclination angle a of the feed pipe 120 can be 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, etc., and can be specifically designed according to the actual needs of the equipment, which will not be listed here one by one.

[0047] In one embodiment of the present application, optionally, the classifying wheel is tiltedly disposed in the accommodating cavity 111 and has an angle consistent with that of the feeding pipe 120 .

[0048] In this embodiment, the classifying wheel is tilted in the accommodating cavity 111 and is consistent with the inclination angle of the feed pipe 120, so that the feed airflow is consistent with the rotating airflow of the classifying wheel, so that the rotating airflow inside the cylinder 110 is not turbulent, which is beneficial to the rotary screening of the material.

[0049] like Figure 1 As shown, in the above embodiment of the present application, optionally, the air flow classification device 100 further includes a compressed air pipe 130, one end of the compressed air pipe 130 is tangent to the outer circumferential wall of the cylinder 110 and is connected to the accommodating cavity 111, and the other end is inclined toward the second discharge port 113 along the axial direction away from the cylinder 110, and the inclination angles of the compressed air pipe 130, the classification wheel and the feed pipe 120 are consistent.

[0050] In this embodiment, by making one end of the compressed air pipe 130 tangential to the outer circumferential wall of the cylinder 110 and connected to the accommodating cavity 111, the other end of the compressed air pipe 130 is tilted toward the second discharge port 113 along the axial direction away from the cylinder 110, so that the material in the cylinder 110 can be accelerated to rotate under the action of the compressed air pipe 130, which is more conducive to the rotary screening of the material.

[0051] At the same time, by setting the inclination angles of the compressed air pipe 130, the classifying wheel and the feed pipe 120 to be consistent, the rotating airflow of the compressed air, the rotating airflow of the classifying wheel and the feed airflow are kept consistent, so that the rotating airflow inside the cylinder 110 is not disordered, which is further beneficial to the rotary screening of the material.

[0052] like Figure 1 As shown, in the above embodiment of the present application, optionally, a plurality of compressed air pipes 130 are provided, and the plurality of compressed air pipes 130 are spaced apart along the axial direction and / or circumferential direction of the cylinder 110 .

[0053] In this embodiment, by setting the number of compressed air pipes 130 to be multiple and arranging the multiple compressed air pipes 130 at intervals along the axial and / or circumferential direction of the cylinder 110, the accelerated rotation effect of the material in the cylinder 110 can be further enhanced, thereby further improving the screening effect of the material.

[0054] like Figure 1 As shown, in one embodiment of the present application, optionally, the airflow classification device 100 further includes a driving member 140 , and an output end of the driving member 140 is connected to the classification wheel.

[0055] In this embodiment, the output end of the driving member 140 is connected to the classifying wheel, so that the classifying wheel is driven to rotate at a high speed under the driving action of the driving member 140, thereby achieving centrifugal classification of the material.

[0056] For example, the driving member 140 may be a rotary motor.

[0057] like Figure 1 As shown, in any of the above embodiments of the present application, optionally, the airflow classification device 100 also includes a first discharge pipe 150 and a second discharge pipe 160, the first discharge pipe 150 is connected to the first discharge port 112, and the second discharge pipe 160 is connected to the second discharge port 113.

[0058] In this embodiment, by connecting the first discharge pipe 150 to the first discharge port 112, the coarse and fine particles can be discharged from the first discharge port 112 through the first discharge pipe 150. By connecting the second discharge pipe 160 to the second discharge port 113, the ultrafine particles can be discharged from the second discharge port 113 through the second discharge pipe 160.

[0059] like Figure 1 As shown, in the above embodiment of the present application, optionally, the air flow classification equipment 100 also includes a first collecting box and a second collecting box 170, the first discharge pipe 150 is respectively connected to the first discharge port 112 and the first collecting box, and the second discharge pipe 160 is respectively connected to the second discharge port 113 and the second collecting box 170.

[0060] In this embodiment, by connecting the first discharge pipe 150 to the first discharge port 112 and the first collection box, respectively, the coarse and fine particulate materials can be discharged from the first discharge port 112 through the first discharge pipe 150 into the first collection box for collection. By connecting the second discharge pipe 160 to the second discharge port 113 and the second collection box 170, respectively, the ultrafine particulate materials can be discharged from the second discharge port 113 through the second discharge pipe 160 into the second collection box 170 for collection.

[0061] like Figure 1 As shown, in the above embodiment of the present application, optionally, the airflow classification device 100 further includes a negative pressure fan 180 , and the second collecting box 170 is respectively connected to the second discharge pipe 160 and the negative pressure fan 180 .

[0062] In this embodiment, the second collecting box 170 is connected to the second discharge pipe 160 and the negative pressure fan 180 respectively, so that the ultrafine particle material can be discharged from the second discharge port 113 through the second discharge pipe 160 into the second collecting box 170 under the suction action of the negative pressure fan 180 and collected by the second collecting box 170.

[0063] like Figure 1 As shown, in the above embodiment of the present application, optionally, the airflow classification device 100 further includes a material guide valve 190 , and the material guide valve 190 is provided on the first discharge pipe 150 .

[0064] In this embodiment, a guide valve 190 is provided on the first discharge pipe 150 to play the role of conducting materials or cutting off materials. When the guide valve 190 is conducted, coarse particle materials and fine particle materials can be discharged from the first discharge port 112 through the first discharge pipe 150 into the first collecting box and collected by the first collecting box. When the guide valve 190 is cut off, the coarse particle materials and fine particle materials can be prevented from being discharged from the first discharge port 112 through the first discharge pipe 150 into the first collecting box.

[0065] In summary, the present application proposes an airflow classification device 100, which includes a cylinder 110, a feed pipe 120 and a classification wheel. The cylinder 110 has a accommodating cavity 111, and has a first discharge port 112 and a second discharge port 113 at both ends respectively connected to the accommodating cavity 111. By arranging a feed pipe 120 between the first discharge port 112 and the second discharge port 113, one end of the feed pipe 120 is tangent to the outer circumferential wall of the cylinder 110 and connected to the accommodating cavity 111, and the other end of the feed pipe 120 is inclined toward the second discharge port 113 in a direction away from the axis of the cylinder 110, so that the material enters the accommodating cavity 111 through the feed pipe 120 and first rotates downward around the axis of the cylinder 110, so that the coarse particle material gathers at the bottom of the cylinder 110 and is discharged through the first discharge port 112, while the fine particle material rotates upward from the bottom of the cylinder 110 around the axis of the cylinder 110 under the suction force of the negative pressure fan 180. At the same time, a high-speed rotating classifying wheel is provided between the feed pipe 120 and the second discharge port 113 to centrifugally classify the fine particle material, so that the ultrafine particle material is discharged from the second discharge port 113 through the classifying wheel, and the fine particle material is thrown out by the classifying wheel and rotates again around the axis of the cylinder 110 downward to converge at the bottom of the cylinder 110 and discharged through the first discharge port 112. The airflow classifying device 100 provided in this application extends the flow path of the material, reduces the mutual influence between the feed airflow and the fine particle material airflow thrown out by the classifying wheel, and thus effectively improves the material screening effect.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0067] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An airflow classification device, characterized in that: include: The cylinder has a receiving cavity, and two ends thereof are respectively provided with a first discharge port and a second discharge port communicating with the receiving cavity; a feed pipe located between the first discharge port and the second discharge port, one end of the feed pipe being tangent to the outer circumferential wall of the cylinder and communicating with the accommodating cavity, and the other end being inclined away from the axis of the cylinder toward the second discharge port; a grading wheel rotatably disposed in the accommodating chamber and located between the feed pipe and the second discharge port; The classifying wheel is tiltedly arranged in the accommodating cavity and has the same tilt angle as the feed pipe; The air flow classification device also includes a compressed air pipe, one end of which is tangent to the outer circumferential wall of the cylinder and connected to the accommodating cavity, and the other end is inclined toward the second discharge port along the axial direction away from the cylinder, and the inclination angles of the compressed air pipe, the classification wheel and the feed pipe are consistent.

2. The airflow classification device according to claim 1, characterized in that The inclination angle of the feeding pipe is a, which satisfies 10 degrees ≤ a ≤ 30 degrees.

3. The airflow classification device according to claim 1, characterized in that There are multiple compressed air pipes, and the multiple compressed air pipes are arranged at intervals along the axial direction and / or circumferential direction of the cylinder.

4. The airflow classification device according to claim 1, characterized in that The airflow classification device further includes a driving member, an output end of which is connected to the classification wheel.

5. The airflow classification device according to any one of claims 1 to 4, characterized in that: The airflow classification device further includes a first discharge pipe and a second discharge pipe, wherein the first discharge pipe is communicated with the first discharge port, and the second discharge pipe is communicated with the second discharge port.

6. The airflow classification device according to claim 5, characterized in that: The airflow classification device further includes a first collecting box and a second collecting box. The first discharge pipe is communicated with the first discharge port and the first collecting box respectively. The second discharge pipe is communicated with the second discharge port and the second collecting box respectively.

7. The airflow classification device according to claim 6, characterized in that: The airflow classification device further includes a negative pressure fan, and the second collecting box is connected to the second discharge pipe and the negative pressure fan respectively.

8. The airflow classification device according to claim 5, characterized in that The airflow classification device further includes a material guide valve, which is arranged on the first discharge pipe.

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