AU2019100604A4 - A classification box - Google Patents

Abstract

A classification box comprises a housing (10) and a plurality of breaking rods (20). The box body includes a pair of side plates (11), a feed inlet (12), a discharge end (13), an air inlet (14) and an air outlet (15). The side plates are located at both sides of housing in the length direction. The feed inlet and the discharge end are formed at both sides of the housing in the height direction perpendicular to the width and the length direction. The air inlet and the air outlet are formed at opposite sides of the housing in the length direction perpendicular to the width and the height direction. Breaking rods are horizontally fixed between the pair of side plates and are arranged in a staggered manner. The breaking rods are at the side of the housing which is closer to the feed inlet (12) in the height direction (H) and are located at the side of housing (10) which is closer to the air inlet (14) in the length direction (L). The classification box provided by the utility model has the advantages of simple structure, small airflow resistance during operation and less wear rate, and it can reduce energy consumption and maintenance cost. The invention also provides a wind classification device with the above classification box. 15--- 0 0014 + -L

Description

A CLASSIFICATION BOX

Cross-Reference to Related Applications [0001] This application claims priority to Chinese Patent Application

CN201821790437.X fded onl November 2018.

Field of the Invention [0002] At least some embodiments of the disclosure relate to a classification box for separating powdery and bulk ore, in particular to a classification box for wind classification device.

Background of the Invention [0003] In the ore grinding process, a mixed material comprising powdery ore and bulk ore is produced. The mixed ore will be separated by a wind classifier, and the ore powder will be moved to the next process; then the bulk material will be ground again to become ore powder. The traditional wind classifier has a complicated structure, large airflow resistance, high wear rate, high energy consumption, and high maintenance cost.

Summary of Invention [0004] The object of the present invention is to provide a wind classification box, which has the advantages of simple structure, small airflow resistance, and less wear and tear during operation; it can also reduce energy consumption and maintenance cost during operation.

[0005] The invention provides a wind classification box, comprising a housing and a plurality of breaking rods. The housing comprises a pair of side plates, a feed inlet, a discharge end, an air inlet, and an air outlet. The pair of side plates are perpendicular to the width direction of the housing and are located at the opposite sides of the housing in the width direction. The feed inlet is formed at one side of the housing. The height direction is perpendicular to the width and length direction. The discharge end is formed at the other side of the housing along the height direction, opposite of the feed inlet. The air inlet is formed on one side of the housing at the top near the feed inlet perpendicular to the length direction; while, the air outlet is on the other side of the housing opposite to

2019100604 05 Jun 2019 air inlet. Breaking rods are arranged in rows horizontally fixed between the pair of side plates and started close to the feed inlet in the height direction and the air inlet in the length direction. Each row consists of x number of rods spaced equidistantly across the horizontal direction of the row. Rows are always perpendicular to the side plates and are stacked vertically with an equal distance between every row. The alignment of rows must form a staggered pattern of rods such that rods in any row are never vertically aligned with any rods in the directly adjacent rows.

[0006] Certain exemplary embodiments can provide the classification box, in which it comprises a straight feeding conduit with one end connecting to the feed inlet. The feeding conduit is perpendicular to the width direction and inclined toward the air inlet side. It provides better speed and movement tendency for incoming ore mixture when entering the box through the feed inlet; it reduces airflow resistance while facilitating the full breakage of the mixture.

[0007] Certain exemplary embodiments can provide the classification box, in which the length of the feeding conduit along the height direction is 2 to 5 meters; the angle between the feeding conduit and the length direction of the box is 40 to 60 degrees to achieve best speed and movement tendency for the coarse ore.

[0008] Certain exemplary embodiments can provide the classification box, in which the cross section of the air outlet along the height direction is larger than the crosssection of the air inlet along the height direction so that fine powder ore is easy to pass through the air outlet to improve the classification efficiency.

[0009] Certain exemplary embodiments can provide the classification box, in which cross-section of the housing is gradually reduced in the height direction from feed inlet to discharge end. Therefore, the coarse ore, falling vertically inside the housing will be automatically gathered at the discharge end to facilitate the discharge of bulk material. [0010] Certain exemplary embodiments can provide the classification box, in which it further comprises pairs of the mounting brackets, and each pair of the mounting bracket is respectively located at both sides of the side plates along the width direction. The mounting brackets facilitate the installation of the classification box.

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Brief Description of the Drawings [0011] A wide variety of potential practical and usefill embodiments will be more readily understood through the following detailed description of certain exemplary embodiments, concerning the accompanying exemplary drawings in which:

FIG. 1 is a top plan view showing an exemplary classification box.

FIG. 2 is showing a cross-sectional structural view of the classification box, taken in the direction of the arrow II in FIG. 1.

FIG. 3 is showing another schematic embodiment of the classification box.

FIG.4 is a top plan view showing the exemplary classification box of FIG.

3.

Parts name and numbers:

housing side plate feed inlet discharge end air inlet air outlet breaking rod feeding conduit mounting bracket

W width direction

H height direction

L length direction

T vertical length of feeding conduit

Detailed Description of the Embodiments [0012] The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings. It should be noted that like reference numerals refer to like parts throughout several views.

2019100604 05 Jun 2019 [0013] The views do not represent the structure and proportion of the actual products using the present disclosure.

[0014] Exemplary means serving as an example, instance or description; any illustration or embodiment described herein as exemplary should not be construed as a more preferred or technically advanced solution.

[0015] FIG. 1 is a top plan view showing an exemplary Classification box. FIG. 2 is showing a cross-sectional structural view, taken in the direction by the arrow II in FIG.

I. Referring to FIG. 1 and FIG. 2, the classification box includes a housing 10 and a plurality of breaking rods 20.

[0016] Specifically, the housing 10 includes a pair of side plates 11, a feed inlet 12, a discharge end 13, an air inlet 14, and an air outlet 15. The pair of side plates 11 are perpendicular to the width direction W (the width direction W in FIG. 2 is perpendicular to the paper surface, so only one side plate 11 is shown) and are located at both sides of the classifying box in the width direction W, respectively. Between the pair of side plates

II, the housing 10 forms a grading cavity for grading the mixture, and the parallel side plates 11 reduce the airflow resistance in the grading chamber. The feed inlet 12 is formed at one side of the classifying box in a height direction H which is perpendicular to the width direction W and length L. The discharge end 13 is formed at the other side of the housing in the height direction H. The air inlet 14 is formed at one side of the classifying box perpendicular to the length direction L and height direction H. The air outlet 15 is formed at the other side of the classifying box in the longitudinal direction L and opposed to the air inlet 14. The air entering through the air inlet 14 can pass horizontally through the housing 10 and discharge at the air outlet 15. To improve the efficiency of the classification box, the cross section of the air inlet 14 is smaller than the cross section of the air outlet 15. It will be understood by those skilled in the art that the shapes of the feed inlet 12, the discharge end 13, the air inlet 14 and the air outlet 15 are not limited to those shown in the drawings and can be adaptively adjusted according to different application scenarios.

[0017] Referring to FIG. 1 and FIG. 2, a plurality of breaking rods 20 (only one of which is identified in the figure) are fixed between a pair of side plates 11; for further convenient installation, the breaking rods 20 are respectively located perpendicular to the

2019100604 05 Jun 2019 side plates 11. As shown in FIG. 2, a plurality of breaking rods 20 are arranged in rows which is along the height direction H. Each row consists of x number of rods spaced equidistantly across the horizontal direction of the row. Rows are stacked vertically with an equal distance between every row. The alignment of rows must form a staggered pattern of rods such that rods in any row are never vertically aligned with any rods in the directly adjacent rows. A plurality of the breaking rods 20 are located closer to the feed inlet side 12 and disposed along the length direction L closer to the air inlet side 14. Therefore, the mixture entering the housing 10 can be broken up in time and classified by the air flow through the housing 10. It will be understood by those skilled in the art that the number and arrangement of the breaking rods 20 are not limited to those shown in the drawings and may be adaptively adjusted according to different application scenarios.

[0018] In order to facilitate a better understanding of the present application by those skilled in the art, the use of the classification box will be described in detail below. First, the mixture enters the housing 10 through a feed inlet 12 and then collides with the breaking rods 20 arranged in a staggered manner, and it breaks up. The air entering from the air inlet 14 can pass horizontally through the classifying box, and the powdery material in the broken mixture is taken out through the air outlet 15. The bulk material falls vertically and is discharged from the discharge end 13. In summary, comparing with the existing wind classification device, the classification box uses a static method to classify the mixture. The structure of the device is simple and durable, and the maintenance cost is low. Moreover, the classification box has less airflow resistance during the operation, which reduces the energy consumptions.

[0019] FIG. 3 is showing another schematic embodiment of a classification box. Referring to FIG. 3, the classification box further comprises a feeding conduit 30. The feeding conduit 30 is a straight pipe with one end connected to the feed inlet 12 and the other end extended slanting upward. The feeding conduit 30 provides a better movement for the mixture as it enters the housing 10 from the feed inlet 12, therefore, provides an adequate force to break the mixture. The feeding conduit 30 is inclined toward the side of the air inlet 14 so that the mixture enters the housing 10 in the air flow direction to reduce the airflow resistance. Referring to FIG. 3, in order to create an optimum speed for the mixture to enter the housing 10 from the feed inlet 12, the length (T) of the feeding

2019100604 05 Jun 2019 conduit 30 in the height direction H is between 2 to 5 meters, and the angle a between the longitudinal direction L and the feeding conduit 30 is 40 to 60 degrees.

[0020] FIG. 4 is a top plan view showing the exemplary classification box of FIG.

3. Referring to FIG. 3 and FIG. 4, the classifying box further includes a plurality of mounting brackets 40 in pairs, and each pair of mounting brackets 40 are located on two sides of the side plates 11 in the width direction W. The mounting brackets 40 can be fixed to the external bracket seats to facilitate the installation of housing 10 that is to be hanged. It can be understood by those skilled in the art that the number of mounting brackets40 is not limited to the one shown in the figure and can be adaptively adjusted according to different application scenarios.

[0021 ] Still other substantially and specifically practical and usefill embodiments will become readily apparent to those skilled in this art from reading the above-recited and/or herein-included detailed description and/or drawings of certain exemplary embodiments. However, it should be understood that numerous variations, modifications, and additional embodiments are possible; accordingly, all such variations, modifications, and embodiments are to be regarded as being within the scope of this application.

[0022] It will be understood that the term “comprise” and any of its derivatives (eg comprises, comprising) as used in this specification is to be taken to be inclusive of features to which it refers, and is not meant to exclude the presence of any additional features unless otherwise stated or implied.

[0023] The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art forms part of the common general knowledge.

Claims (6)

1. What is claimed is:

   1. A classification box, characterized in that the classification box comprises:

   a housing (10), which comprises:

   a pair of side plates (11) perpendicular to the width direction (W) of the housing (10) and located at the opposite sides of the housing (10) in the width direction (W);

   a feed inlet (12) formed at one side of the housing (10) in a height direction (H) which is perpendicular to the width direction (W);

   a discharge end (13) formed at the other side of the housing (10) in the height direction (H);

   an air inlet (14) formed at one side of the housing (10) in a length direction (L) perpendicular to the width direction (W) and the height direction (H), and;

   an air outlet (15) formed at the other side of housing (10) in the length direction (L) and opposite to the air inlet (14); and a plurality of breaking rods (20) horizontally fixed between the pair of side plates (11) ,the breaking rods (20) included in the two breaking rods (20) rows adjacent in the height direction (H) are arranged in a staggered manner; the plurality of breaking rods (20) are located at the side of housing which is closer to the feed inlet (12) in the height direction (H), and are located at the side of housing (10) which is closer to the air inlet (14) in the length direction (L).
2. 2. The classification box according to claim 1, wherein it further comprises a feeding conduit (30). The feeding conduit (30) is a straight pipe with one end connected to the feed inlet (12); the feeding conduit (30) is perpendicular to the width direction and inclined toward the air inlet (14) side.
3. 3. The classification box according to Claim 2, wherein the length of the feeding conduit (30) in the height direction (H) is 2 to 5 meters, and the angle between the feeding conduit (30) and the length direction (L) is 40 to 60 degrees.
4. 4. The classification box according to claim 3, wherein the cross section of the air outlet (15) along the length direction (L) is larger than cross section the air inlet (14) along the length direction (L).

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5. 5. The classification box according to claim 1, wherein the cross section of the housing (10) is gradually reduced in the height direction (H) towards the discharge end (13).
6. 6. The classification box according to claim 1, wherein it further comprises a plurality of pairs of mounting brackets (40), each pair of the mounting brackets (40) being respectively located at both sides of the side plates (11) in the width direction (W).