Cassette dustpan plate and grinder for autogenous and semi-autogenous grinders

Abstract

The present invention provides a cassette dustpan plate and a mill for autogenous mills and semi-autogenous mills, and relates to the technical field of grinding equipment. The cassette dustpan plate comprises: a dustpan plate body, a grating plate and a cassette; the dustpan plate body is arranged to form a feed trough, the grating plate covers the opening of the feed trough, and the cassette comprises: a first opening and a second opening; the first opening connects the cassette with the feed trough, and the second opening connects the cassette with the discharge channel of the mill; in the running direction A of the dustpan plate, the cassette is located downstream of the feed trough connected thereto; the mill comprises the cassette dustpan plate. In the embodiment of the present invention, after the height of the feed trough exceeds the height of the rotation center of the mill, the ore slurry therein will enter the cassette under the action of gravity, so the ore slurry can no longer flow back from the feed trough into the mill, but all flows from the cassette into the discharge channel, thereby improving the discharge efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, in particular to a dark box type dustpan plate and a grinding machine used for an autogenous grinding machine and a semi-autogenous grinding machine. Background Art

[0002] Autogenous mill is a new type of grinding equipment that has both crushing and grinding functions. It uses the material itself as the medium and achieves crushing through mutual impact and grinding, hence the name autogenous mill. Semi-autogenous mill is a mill that adds a small amount of steel balls to the autogenous mill. As a result, the processing capacity can be increased by 10-30%, and the energy consumption per unit product can be reduced by 10-20%, but the liner wear increases by 15% and the product fineness becomes coarser. Both are widely used in the field of grinding technology.

[0003] The dustpan plates used in current mills (including autogenous mills and semi-autogenous mills) are mostly arranged radially, and are covered with a grating plate with strip holes. When the mill is running, the ground ore slurry that is smaller than the width of the grating plate holes enters the dustpan plate through the strip holes on the grating plate. When the dustpan plate rotates to above the rotation center of the mill, the ore slurry slides along the side wall of the dustpan plate and enters the discharge channel, thereby discharging the ore slurry.

[0004] However, when the dustpan plate rotates above the rotation center of the mill, the ore slurry inside it will flow back into the mill through the holes in the grate plate, causing a backflow phenomenon and reducing the discharge efficiency. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a dark box type dustpan plate and a grinder for an autogenous grinder and a semi-autogenous grinder, which solves the problem that the grinder is prone to backflow.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A cassette-type dustpan plate for autogenous grinding mills and semi-autogenous grinding mills, the cassette-type dustpan plate comprising: a dustpan plate body, a grating plate and a cassette; the dustpan plate body is arranged to form a feed trough, the grating plate covers the opening of the feed trough, the cassette comprises: a first opening and a second opening; the first opening connects the cassette with the feed trough, the second opening connects the cassette with the discharge channel of the mill; in the running direction A of the dustpan plate, the cassette is located downstream of the feed trough connected thereto.

[0010] Preferably, a plurality of guide plates are provided at the first opening, and the guide plates are inclined from a side close to the ore discharge channel to a side away from the ore discharge channel in the running direction A of the dustpan plate.

[0011] Preferably, an angle β∈[30°, 60°] is formed between a plane where the two side edges of the guide plate are located and a plane where the first opening is located.

[0012] Preferably, an angle β between a plane where the two side edges of the guide plate are located and a plane where the first opening is located is 45°.

[0013] Preferably, the guide plate is an arc-shaped plate, the convex surface of the guide plate faces the feed trough, and the concave surface of the guide plate faces the dark box.

[0014] Preferably, the guide plate is made of stainless steel.

[0015] Preferably, the thickness of the guide plate is not less than 3 cm.

[0016] Preferably, the side wall of the dark box is arc-shaped.

[0017] A grinding machine comprises the dark box type dustpan plate.

[0018] A method for using a cassette dustpan plate for an autogenous grinder and a semi-autogenous grinder, the method comprising the following steps in sequence:

[0019] S1, feeding trough

[0020] During the operation of the mill, the feed trough rotates with the dustpan plate around the mill's rotation center. When the feed trough rotates to a height lower than the mill's rotation center, the ground ore slurry that is smaller than the grid plate hole width enters the feed trough through the strip holes on the grid plate.

[0021] S2, ore slurry enters the dark box

[0022] When the feed chute rotates to a height higher than the rotation center of the mill, the ore slurry in the feed chute all enters the dark box through the first opening under the action of gravity;

[0023] S3, ore slurry discharge

[0024] As the feed chute continues to rotate, the ore slurry in the dark box flows along the side wall of the dark box through the second opening into the ore discharge channel, completing the discharge of the ore slurry.

[0025] (III) Beneficial effects

[0026] The present invention provides a cassette-type dustpan plate and a grinder for an autogenous grinder and a semi-autogenous grinder. Compared with the prior art, the present invention has the following beneficial effects:

[0027] The embodiment of the present invention adopts a dustpan plate body to surround and form a feed trough, and a dark box is arranged downstream of the feed trough, and the dark box is connected to the discharge channel; after the height of the feed trough exceeds the height of the rotation center of the mill, the ore slurry therein will enter the dark box under the action of gravity, so the ore slurry can no longer flow back from the feed trough into the mill, but all flows into the discharge channel from the dark box, thereby improving the discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of a grinding machine in an embodiment of the present invention;

[0030] Figure 2 Schematic diagram of the structure of the dark box type dustpan plate in the embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The embodiment of the present application solves the problem of easy backflow in the mill by providing a dark box type dustpan plate and a mill for an autogenous mill and a semi-autogenous mill, thereby achieving high-efficiency ore discharge.

[0033] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0034] In the embodiment of the present invention, a dustpan plate body is used to surround and form a feed trough, and a dark box is arranged downstream of the feed trough, and the dark box is connected to the discharge channel; after the height of the feed trough exceeds the height of the rotation center of the mill, the ore slurry therein will enter the dark box under the action of gravity, so the ore slurry can no longer flow back into the mill from the feed trough, but all flows into the discharge channel from the dark box, thereby improving the discharge efficiency.

[0035] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Example:

[0037] like Figure 1 As shown, the present invention provides a cassette type dustpan plate for autogenous mills and semi-autogenous mills, the cassette type dustpan plate comprising: a dustpan plate body 10, a grating plate 20 and a cassette 30; the dustpan plate body 10 is arranged to surround a feed trough 11, the grating plate 20 covers the opening of the feed trough 11, the cassette 30 comprises: a first opening 31 and a second opening 32; the first opening 31 connects the cassette 30 with the feed trough 11, the second opening 32 connects the cassette 30 with the discharge channel of the mill; in the running direction A of the dustpan plate, the cassette 30 is located downstream of the feed trough 11 connected thereto.

[0038] The running direction A of the dustpan plate can be either clockwise or counterclockwise.

[0039] During the operation of the mill, a small volume of ore and slurry enters the feed trough 11 through the through holes of the grid plate 20. When the feed trough 11 moves upward from the height of the rotation center of the mill, the ore slurry in the feed trough 11 enters the dark box 30 through the first opening 31 under the action of gravity, and then flows into the discharge channel through the second opening 32 along the side wall of the dark box 30, completing the discharge of the ore slurry.

[0040] Since the height of the feed trough 11 exceeds the height of the rotation center of the mill, the ore slurry therein will enter the dark box 30 under the action of gravity. Therefore, the ore slurry can no longer flow back from the feed trough 11 through the through holes of the grating plate into the mill, but all flows into the discharge channel from the dark box 30, thereby improving the discharge efficiency.

[0041] like Figure 2 As shown, a plurality of guide plates 33 are provided at the first opening 31, and the guide plates 33 are inclined from a side close to the discharge channel to a side away from the discharge channel in the running direction A of the dustpan plate. When the ore slurry flows from the feed trough 11 into the dark box 30, the ore slurry is guided toward the second opening 32 under the action of the guide plates 33, which is conducive to the ore slurry flowing into the discharge channel through the second opening 32.

[0042] The included angle β∈[30°, 60°] between the plane where the two side edges of the guide plate 33 are located and the plane where the first opening is located makes the guide plate 33 not only have an excellent guiding function, but also act as a baffle to prevent the ore slurry in the dark box 30 from flowing back into the feed trough 11.

[0043] The angle β between the plane where the two side edges of the guide plate 33 are located and the plane where the first opening is located is 45°.

[0044] like Figure 2As shown, the guide plate 33 is an arc-shaped plate, the convex surface of the guide plate 33 faces the feed trough 11, and the concave surface of the guide plate 33 faces the dark box 30. When the ore slurry in the dark box 30 flows toward the second opening 32, the guide plate 33 blocks the ore slurry in the dark box 30 from flowing back into the feed trough 11, and gathers the blocked ore slurry, and guides it toward the second opening 32 along the concave surface of the guide plate 33, ensuring that the ore slurry in the dark box 30 flows into the ore discharge channel through the second opening 32, further avoiding reflux and improving the ore discharge efficiency.

[0045] The guide plate 33 is made of stainless steel.

[0046] The thickness of the guide plate 33 is not less than 3 cm, so as to ensure the strength of the guide plate 33 .

[0047] like Figure 1 As shown, the side wall of the dark box 30 is arc-shaped, which is conducive to the ore slurry flowing along the side wall of the dark box 30 to the second opening 32.

[0048] The present invention provides a grinding machine, which comprises the dark box type dustpan plate.

[0049] The present invention also provides a method for using a cassette dustpan plate for an autogenous grinder and a semi-autogenous grinder, the method comprising the following steps in sequence:

[0050] S1, feeding trough

[0051] During the operation of the mill, the feed trough 11 rotates with the dustpan plate around the rotation center of the mill. When the feed trough 11 rotates to a height lower than the rotation center of the mill, the ground ore slurry smaller than the hole width of the grid plate 20 enters the feed trough 11 through the strip holes on the grid plate 20;

[0052] S2, ore slurry enters the dark box

[0053] When the feed chute 11 rotates to a height higher than the rotation center of the mill, the ore slurry in the feed chute 11 enters the dark box 30 through the first opening 31 under the action of gravity;

[0054] S3, ore slurry discharge

[0055] As the feed trough 11 continues to rotate, the ore slurry in the dark box 30 flows along the side wall of the dark box 30 through the second opening 32 into the ore discharge channel, completing the discharge of the ore slurry.

[0056] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0057] 1. The embodiment of the present invention adopts a dustpan plate body to surround and form a feed trough, and a dark box is arranged downstream of the feed trough, and the dark box is connected to the discharge channel; after the height of the feed trough exceeds the height of the rotation center of the mill, the ore slurry therein will enter the dark box under the action of gravity, so the ore slurry can no longer flow back from the feed trough into the mill, but all flows into the discharge channel from the dark box, thereby improving the discharge efficiency.

[0058] 2. In the embodiment of the present invention, an arc-shaped guide plate is arranged at the connection between the feed trough and the dark box. On the one hand, in the process of the ore slurry flowing from the feed trough into the dark box, the ore slurry is guided toward the second opening under the action of the guide plate, which is beneficial for the ore slurry to flow into the discharge channel through the second opening; on the other hand, in the process of the ore slurry in the dark box flowing toward the second opening, the guide plate blocks the ore slurry in the dark box from flowing back into the feed trough, gathers the blocked ore slurry, and guides it toward the second opening along the concave surface of the guide plate, ensuring that the ore slurry in the dark box flows into the discharge channel through the second opening, further avoiding backflow and improving the discharge efficiency.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cassette dustpan plate for autogenous mills and semi-autogenous mills, characterized in that: The dark box type dustpan plate comprises: a dustpan plate body (10), a grating plate (20) and a dark box (30); the dustpan plate body (10) is arranged to surround a feed trough (11), the grating plate (20) covers the opening of the feed trough (11), and the dark box (30) comprises: a first opening (31) and a second opening (32); the first opening (31) connects the dark box (30) with the feed trough (11), and the second opening (32) connects the dark box (30) with a discharge channel of a grinding mill; in the running direction A of the dustpan plate, the dark box (30) is located downstream of the feed trough (11) connected thereto; A plurality of guide plates (33) are provided at the first opening (31), and the guide plates (33) are inclined from a side close to the ore discharge channel to a side away from the ore discharge channel in the running direction A of the dustpan plate; An included angle β∈[30°, 60°] between a plane where two side edges of the guide plate (33) are located and a plane where the first opening is located; The thickness of the guide plate (33) is not less than 3 cm.

2. The cassette dustpan plate according to claim 1, characterized in that: The included angle β between the plane where the two side edges of the guide plate (33) are located and the plane where the first opening is located is 45°.

3. The cassette dustpan plate according to claim 1, characterized in that: The guide plate (33) is an arc-shaped plate, the convex surface of the guide plate (33) faces the feed trough (11), and the concave surface of the guide plate (33) faces the dark box (30).

4. The cassette dustpan plate according to claim 1, characterized in that: The guide plate (33) is made of stainless steel.

5. The cassette dustpan plate according to claim 1, characterized in that: The side wall of the dark box (30) is arc-shaped.

6. The cassette dustpan plate according to claim 1, characterized in that: The method for using the cassette dustpan plate comprises the following steps in sequence: S1, feeding trough During the operation of the mill, the feed trough (11) rotates with the dustpan plate around the rotation center of the mill. When the feed trough (11) rotates to a height lower than the rotation center of the mill, the ground ore slurry smaller than the hole width of the grid plate (20) enters the feed trough (11) through the strip holes on the grid plate (20); S2, ore slurry enters the dark box When the feed chute (11) rotates to a height higher than the rotation center of the mill, all the ore slurry in the feed chute (11) enters the dark box (30) through the first opening (31) under the action of gravity; S3, ore slurry discharge As the feed trough (11) continues to rotate, the ore slurry in the dark box (30) flows along the side wall of the dark box (30) through the second opening (32) into the ore discharge channel, thereby completing the discharge of the ore slurry.

7. A grinding machine, characterized in that: The grinder comprises the dark box type dustpan plate as described in any one of claims 1 to 6.

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