A screen basket for a mining centrifuge

Abstract

The utility model discloses a kind of screen baskets of mining centrifuge applied to centrifuge field, by splitting the screen of prior art integral type into multiple screen plates, multiple screen plates can be individually disassembled and replaced, when needing to replace damaged outer screen plate or inner screen plate, first limiting ring or second limiting ring can be disassembled, to replace damaged outer screen plate or inner screen plate, after installing new outer screen plate or inner screen plate, only first limiting ring or second limiting ring is fixed with mounting ring again, maintenance work can be completed, maintenance cost when reducing single screen plate damage is realized;Two layers of screen structure are designed simultaneously, which can reduce the probability of screening operation being affected due to single-layer screen structure failure, and improve the reliability of the screen basket of the mining centrifuge in use;By the setting of limiting gap, the outer screen plate and the inner screen plate are limited in the circumferential direction by the main support rod after installation, reducing wear caused by low transmission efficiency.

Description

Technical Field

[0001] This utility model relates to the field of centrifuges, and in particular to a screen basket for a mining centrifuge. Background Technology

[0002] The sieve basket is one of the core components of a centrifuge. The design and quality of the sieve basket directly affect the performance of the centrifuge.

[0003] Existing technology (patent document with publication number "CN206257893U") discloses a split-type screen basket for a mining dewatering centrifuge, including a screen mesh, fastening bolts, and a screen basket frame. The screen mesh is welded from five fan-shaped plates, with a wear-resistant ring at the small end and a flange at the large end. The screen basket frame is made of conical rings to match the screen mesh and is welded from strip steel plates. The small end of the screen mesh is placed in the screen basket frame, and the flange of the screen mesh is connected to the large end of the screen basket frame with fastening bolts. When the screen mesh of this split-type mining dewatering centrifuge becomes worn and unusable, only the screen mesh needs to be replaced, and the screen basket frame can be reused. Therefore, while ensuring production quality, it saves production costs for enterprises.

[0004] Based on the above search and combined with existing technology, it was found that although existing screens can be disassembled and installed individually, they use flange structure connections, which requires the removal of many bolts, resulting in low disassembly and assembly efficiency. At the same time, the wear or damage of the screen may be localized, and replacing the entire screen at once would be wasteful and not conducive to reducing maintenance costs. Utility Model Content

[0005] The core of this invention lies in solving the problem of waste caused by replacing the entire screen at once in existing technologies by disassembling the existing one-piece screen into multiple screen plates. At the same time, the two-layer screen structure reduces the probability of screening operations being affected by the failure of a single-layer screen structure, thus improving the reliability of the screen basket of this mining centrifuge.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A screen basket for a mining centrifuge includes a mounting frame, which includes multiple circular ribs with diameters decreasing from top to bottom. Multiple main support rods are fixed on the mounting frame in a circumferential array along the axis of the mounting frame. Mounting rings and limiting rings are fixed at the upper and lower ends of the main support rods, respectively. Limiting grooves are formed at the top of the limiting rings. The mounting frame and the multiple main support rods form multiple fan-shaped internal and external accommodating spaces.

[0008] Multiple internal screen plates are snapped into multiple internal storage spaces, and the lower ends of multiple internal screen plates are snapped into limiting grooves. Multiple internal screen plates together form a bucket-shaped screen body that is compatible with the mounting frame.

[0009] Multiple outer screen plates are snapped into the outer accommodating spaces, and the lower ends of the multiple outer screen plates are also snapped into the limiting grooves. The multiple outer screen plates together form a bucket-shaped screen body that is compatible with the mounting frame.

[0010] The mounting ring has a detachable limiting component, which is used to limit the upper ends of multiple outer screen plates and multiple inner screen plates, so that the upper ends of multiple outer screen plates and multiple inner screen plates are fixed.

[0011] By breaking down the existing integrated screen into multiple screen plates, which can be individually disassembled and replaced, the maintenance cost when a single screen plate is damaged is reduced. At the same time, the design of a two-layer screen structure can reduce the probability of screening operations being affected by the failure of a single-layer screen structure, thereby improving the reliability of the screen basket of the mining centrifuge.

[0012] Furthermore, the limiting component includes a first limiting ring and a second limiting ring. Both the first limiting ring and the second limiting ring are detachably fixed to the mounting ring. The lower end of the first limiting ring is integrally formed with a first limiting flange that extends downward and abuts against the inner side of the upper part of a plurality of inner screen plates. The lower end of the second limiting ring is integrally formed with a second limiting flange that extends downward and abuts against the outer side of the upper part of a plurality of outer screen plates.

[0013] Furthermore, both the outer screen plate and the inner screen plate have limiting notches. The limiting notches on the outer screen plate are located on the inner side of the outer screen plate, and the limiting notches on the inner screen plate are located on the outer side of the inner screen plate.

[0014] When the outer screen plate and the inner screen plate are engaged in the outer and inner receiving spaces, the main support rod is embedded in the limiting notch.

[0015] Furthermore, threaded portions are formed on both the inner and outer sides of the mounting ring, a threaded groove adapted to the threaded portion is formed on the outer side of the first limiting ring, and a threaded groove adapted to the threaded portion is formed on the inner side of the second limiting ring. Both the first limiting ring and the second limiting ring are threadedly connected to the mounting ring.

[0016] Optionally, the first limiting ring includes multiple annular arrays of first arc plates, each corresponding to a multiple inner screen plate; the second limiting ring includes multiple annular arrays of second arc plates, each corresponding to a multiple outer screen plate; both the multiple first arc plates and the multiple second arc plates are detachably fixed to the mounting ring via connectors.

[0017] Furthermore, the connector includes screws, with multiple screws corresponding to multiple first arc plates and multiple second arc plates respectively. The multiple first arc plates and multiple second arc plates are respectively screwed to the mounting ring by multiple screws.

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] (1) This solution breaks down the integrated screen in the existing technology into multiple screen plates, which can be disassembled and replaced individually, thereby reducing the maintenance cost when a single screen plate is damaged; at the same time, the design of a two-layer screen structure can reduce the probability of screening operations being affected by the failure of a single-layer screen structure, and improve the reliability of the screen basket of the mining centrifuge.

[0020] (2) By setting the limiting notch, the outer screen plate and the inner screen plate are limited in the circumferential direction by the main support rod after installation, so that multiple outer screen plates and multiple inner screen plates can rotate with the rotation of the installation frame, increasing the transmission area, thereby making the power transmission between the separated outer screen plates and inner screen plates and the installation frame stable and reducing wear caused by low transmission efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of the mounting frame structure of Embodiment 1 of this utility model;

[0024] Figure 4 This is a schematic diagram of the outer and inner screen plates of Embodiment 1 of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of Embodiment 2 of the present invention.

[0026] Explanation of the labels in the diagram:

[0027] 1. Mounting frame; 11. Mounting ring; 111. Threaded part; 12. Limiting ring; 121. Limiting groove; 13. Main support rod; 2. Screw; 3. Outer screen plate; 4. Inner screen plate; 5. First limiting ring; 51. First limiting flange; 6. Second limiting ring; 61. Second limiting flange; 7. Limiting notch; 8. First arc plate; 9. Second arc plate. Detailed Implementation

[0028] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0029] Example 1:

[0030] Please see Figures 1-4A screen basket for a mining centrifuge includes a mounting frame 1. The mounting frame 1 includes multiple circular ribs with diameters decreasing from top to bottom. Multiple main support rods 13 are fixed on the mounting frame 1 in a circumferential array along the axis of the mounting frame 1. Mounting rings 11 and limiting rings 12 are fixed at the upper and lower ends of the main support rods 13, respectively. A limiting groove 121 is opened at the top of the limiting rings 12. The mounting frame 1 and the multiple main support rods 13 form multiple fan-shaped internal and external accommodating spaces.

[0031] Multiple inner screen plates 4 are snapped into multiple internal storage spaces, and the lower ends of multiple inner screen plates 4 are snapped into the limiting grooves 121. Multiple inner screen plates 4 together form a bucket-shaped screen body that is compatible with the mounting frame 1.

[0032] Multiple outer screen plates 3 are snapped into multiple outer accommodating spaces, and the lower ends of multiple outer screen plates 3 are also snapped into the limiting groove 121. Multiple outer screen plates 3 together form a bucket-shaped screen body that is compatible with the mounting frame 1.

[0033] A limiting component is detachably fixed to the mounting ring 11. The limiting component is used to limit the upper ends of multiple outer screen plates 3 and multiple inner screen plates 4. The limiting component includes a first limiting ring 5 and a second limiting ring 6. Both the first limiting ring 5 and the second limiting ring 6 are detachably fixed to the mounting ring 11. The lower end of the first limiting ring 5 is integrally formed with a first limiting flange 51 that extends downward and abuts against the upper inner side of multiple inner screen plates 4. The lower end of the second limiting ring 6 is integrally formed with a second limiting flange 61 that extends downward and abuts against the upper outer side of multiple outer screen plates 3.

[0034] Based on the above structure, under normal use, the first limiting flange 51 at the lower end of the first limiting ring 5 and the second limiting flange 61 at the lower end of the second limiting ring 6 respectively limit and fix the upper ends of multiple outer screen plates 3 and multiple inner screen plates 4, so that multiple outer screen plates 3 and multiple inner screen plates 4 are snapped and limited between the first limiting flange 51, the second limiting flange 61, and the limiting groove 121, and are located in the internal and external accommodating spaces formed by the mounting frame 1 and multiple main support rods 13, so as to achieve stable fixed installation;

[0035] When it is necessary to replace the damaged outer screen plate 3 or inner screen plate 4, the first limiting ring 5 or the second limiting ring 6 can be removed to replace the damaged outer screen plate 3 or inner screen plate 4. After installing the new outer screen plate 3 or inner screen plate 4, the maintenance work can be completed by simply fixing the first limiting ring 5 or the second limiting ring 6 to the mounting ring 11 again.

[0036] By disassembling the existing integrated screen into multiple screen plates (multiple outer screen plates 3 and multiple inner screen plates 4 each form a complete screen, where screen plates refer to multiple outer screen plates 3 or multiple inner screen plates 4), multiple screen plates can be disassembled and replaced individually, thereby reducing maintenance costs when a single screen plate is damaged; at the same time, the design of a two-layer screen structure can reduce the probability of screening operations being affected by the failure of a single-layer screen structure, and improve the reliability of the screen basket of the mining centrifuge during use.

[0037] Furthermore, both the outer screen plate 3 and the inner screen plate 4 have limiting notches 7. The limiting notches 7 on the outer screen plate 3 are located on the inner side of the outer screen plate 3, and the limiting notches 7 on the inner screen plate 4 are located on the outer side of the inner screen plate 4.

[0038] When the outer screen plate 3 and the inner screen plate 4 are engaged in the outer accommodating space and the inner accommodating space, the main support rod 13 is embedded in the limiting notch 7.

[0039] By setting the limiting notch 7, the outer screen plate 3 and the inner screen plate 4 are limited in the circumferential direction by the main support rod 13 after installation, so that multiple outer screen plates 3 and multiple inner screen plates 4 can rotate with the rotation of the mounting frame 1, increasing the transmission area, thereby making the power transmission between the separated outer screen plates 3 and inner screen plates 4 and the mounting frame 1 stable and reducing wear caused by low transmission efficiency.

[0040] Furthermore, to facilitate disassembly, threaded portions 111 are formed on both the inner and outer sides of the mounting ring 11. A threaded groove matching the thread of the threaded portion 111 is formed on the outer side of the first limiting ring 5, and a threaded groove matching the thread of the threaded portion 111 is formed on the inner side of the second limiting ring 6. Both the first limiting ring 5 and the second limiting ring 6 are threadedly connected to the mounting ring 11. Through the design of the threaded structure, it is easy to disassemble and fix the first limiting ring 5 and the second limiting ring 6 to the mounting ring 11. Compared with the flange structure in the prior art (which requires tightening multiple bolts), the disassembly and assembly efficiency is higher.

[0041] Example 2:

[0042] Please see Figure 5 A screen basket for a mining centrifuge, which is based on Example 1, differs from Example 1 in that:

[0043] The first limiting ring 5 includes multiple annular arrays of first arc plates 8, each of which corresponds to a multiple inner screen plate 4. The second limiting ring 6 includes multiple annular arrays of second arc plates 9, each of which corresponds to a multiple outer screen plate 3. Both the multiple first arc plates 8 and the multiple second arc plates 9 are detachably fixed to the mounting ring 11 by connecting parts.

[0044] The connector includes screws 2, and multiple screws 2 are provided and correspond to multiple first arc plates 8 and multiple second arc plates 9 respectively. The multiple first arc plates 8 and multiple second arc plates 9 are respectively screwed and fixed to the mounting ring 11 by multiple screws 2.

[0045] By disassembling the first limiting ring 5 into multiple first arc plates 8 and the second limiting ring 6 into multiple second arc plates 9, and using them in conjunction with screws 2, since the load-bearing capacity of a single first arc plate 8 or second arc plate 9 is small (only a single outer screen plate 3 or a single inner screen plate 4 needs to be limited), only a small number (two or three) of screws 2 are needed for stable fixing. When replacing the outer screen plate 3 or inner screen plate 4 individually, the disassembly efficiency is still higher than that of the existing technology, and the disassembly and assembly are more flexible. It is possible to replace a single outer screen plate 3 or inner screen plate 4 without causing other outer screen plates 3 or inner screen plates 4 to lose their top limit and fall off, making maintenance safer and more reliable.

[0046] The above description is merely a preferred embodiment of this utility model; it encompasses all the protection scope of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be covered within the protection scope of this utility model.

Claims

1. A screen basket for a mining centrifuge, comprising a mounting frame (1), characterized in that: The mounting frame (1) includes multiple circular ribs with diameters decreasing sequentially from top to bottom. Multiple main support rods (13) arranged in a circular array along the axis of the mounting frame (1) are fixed on the mounting frame (1). The upper and lower ends of the main support rods (13) are respectively fixed with mounting rings (11) and limiting rings (12). The top of the limiting rings (12) has a limiting groove (121). The mounting frame (1) and the multiple main support rods (13) form multiple fan-shaped internal and external accommodating spaces. Each of the multiple inner screen plates (4) is snapped into one of the multiple inner screen plates (4), and the lower ends of the multiple inner screen plates (4) are snapped into the limiting groove (121). The multiple inner screen plates (4) together form a bucket-shaped screen body that is compatible with the mounting frame (1). Each of the multiple outer accommodating spaces is fitted with an outer screen plate (3), and the lower end of each of the multiple outer screen plates (3) is also fitted into the limiting groove (121). The multiple outer screen plates (3) together form a bucket-shaped screen body that is compatible with the mounting frame (1). The mounting ring (11) is detachably fixed with a limiting component, which is used to limit the upper ends of multiple outer screen plates (3) and multiple inner screen plates (4) so ​​that the upper ends of multiple outer screen plates (3) and multiple inner screen plates (4) are fixed.

2. The screen basket of a mining centrifuge according to claim 1, characterized in that: The limiting component includes a first limiting ring (5) and a second limiting ring (6). Both the first limiting ring (5) and the second limiting ring (6) are detachably fixed to the mounting ring (11). The lower end of the first limiting ring (5) is integrally formed with a first limiting flange (51) that extends downward and abuts against the upper inner side of a plurality of inner screen plates (4). The lower end of the second limiting ring (6) is integrally formed with a second limiting flange (61) that extends downward and abuts against the upper outer side of a plurality of outer screen plates (3).

3. The screen basket of a mining centrifuge according to claim 2, characterized in that: Both the outer screen plate (3) and the inner screen plate (4) have limiting notches (7). The limiting notches (7) on the outer screen plate (3) are located inside the outer screen plate (3), and the limiting notches (7) on the inner screen plate (4) are located outside the inner screen plate (4). When the outer screen plate (3) and the inner screen plate (4) are engaged in the outer accommodating space and the inner accommodating space, the main support rod (13) is embedded in the limiting notch (7).

4. A screen basket for a mining centrifuge as claimed in claim 2, characterised in that: The mounting ring (11) has threaded portions (111) on both its inner and outer sides. The outer side of the first limiting ring (5) has a threaded groove that matches the thread of the threaded portion (111). The inner side of the second limiting ring (6) has a threaded groove that matches the thread of the threaded portion (111). The first limiting ring (5) and the second limiting ring (6) are both threadedly connected to the mounting ring (11).

5. A screen basket for a mining centrifuge as claimed in claim 2, characterised in that: The first limiting ring (5) includes a plurality of first arc plates (8) in a ring array, and the plurality of first arc plates (8) correspond one-to-one with the plurality of inner screen plates (4). The second limiting ring (6) includes a plurality of second arc plates (9) in a ring array, and the plurality of second arc plates (9) correspond one-to-one with the plurality of outer screen plates (3). The plurality of first arc plates (8) and the plurality of second arc plates (9) are detachably fixed to the mounting ring (11) by means of connectors.

6. The screen basket of a mining centrifuge according to claim 5, characterized in that: The connector includes screws (2), and there are multiple screws (2) that correspond to multiple first arc plates (8) and multiple second arc plates (9) respectively. The multiple first arc plates (8) and multiple second arc plates (9) are respectively screwed to the mounting ring (11) by multiple screws (2).

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