Ball row sieve of ore ball mill

Abstract

The utility model discloses a ball row sieve of an ore ball mill, which belongs to the technical field of ore ball mills and comprises a bottom plate, four first hydraulic rods are fixedly mounted on the top surface of the bottom plate, and the top ends of every two first hydraulic rods are fixedly connected with supporting plates respectively. The top faces of the two supporting plates are each fixedly provided with a set of second hydraulic rods, the top ends of the two sets of second hydraulic rods are both fixedly connected with supporting columns, and the top ends of the two sets of supporting columns are each fixedly connected with a lifting frame. According to the ball mill steel ball screening device, the device can be driven to move through the self-locking trundles so that the device can screen different ball mill steel balls, the height of the screening box and the height of the ball receiving hopper can be adjusted through the first hydraulic rod, and the ball receiving hopper can receive the steel balls at ball mill steel ball discharging ports of different heights; the steel ball screening device is suitable for screening steel balls in ball mills with different shapes and heights.

Description

Technical Field

[0001] This utility model relates to the field of ore ball mill technology, and more specifically, to a ball grate screen for an ore ball mill. Background Technology

[0002] A ball mill is a common grinding equipment used to grind materials into powder. Material is fed into the machine through a hopper, and then, through the friction of rotating steel balls, the material is ground into a fine powder and discharged from the outlet. In a ball mill, the steel balls are the key grinding media, their function being to grind the material into fine powder through rotational friction. The size, quantity, and material of the steel balls all affect the grinding effect and product quality of the ball mill. During continuous friction within the ball mill, the steel balls may shrink due to wear on the frame and surface over time. If the shrinkage of the steel balls is found to be severe during the use of the ball mill, they should be replaced promptly.

[0003] A search revealed that invention patent CN117000590A discloses a ball mill steel ball screening device and method. The screening device includes a coal mill drum, with a feed end and a discharge end at both ends. The feed end of the coal mill drum has a cylindrical feeder installation port. Lining tiles are installed on the inner wall of the coal mill drum, and guide plates are fixedly connected to the inner walls of multiple lining tiles. The distance between adjacent guide plates is less than the diameter of the smallest steel ball in the coal mill drum. The multiple guide plates together form a spiral ball discharge plate that can discharge steel balls outward when the coal mill drum rotates. A ball screening device for screening steel balls is provided on one side of the feeder installation port. The end of the ball screening device near the feeder installation port is the ball receiving end. A guide groove for guiding steel balls from the feeder installation port to the ball receiving end of the ball screening device is connected between the feeder installation port and the ball receiving end of the ball screening device. This patent facilitates the discharge of steel balls from the coal mill into the ball screening device.

[0004] However, the aforementioned patents have the following shortcomings: they are not convenient for moving the screening device, making it difficult to screen different ball mill steel balls, resulting in poor practicality; furthermore, when screening steel balls, they can only be screened by their own weight on the screening screen at the bottom of the screening tank, and the steel balls stay on the screen for too short a time, affecting the screening effect. Therefore, we propose a ball grate screen for an ore ball mill. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a ball grate screen for an ore ball mill.

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

[0007] A ball grate screen for an ore ball mill includes a base plate. Four first hydraulic rods are fixedly installed on the top surface of the base plate. A support plate is fixedly connected to the top of each pair of first hydraulic rods. A set of second hydraulic rods is fixedly installed on the top surface of each of the two support plates. A support column is fixedly connected to the top of each of the two sets of second hydraulic rods. A lifting frame is fixedly connected to the top of each of the two sets of support columns. A screening box is fixedly connected between the two lifting frames. A ball receiving hopper is fixedly sleeved on the top of one end of the screening box. A screening mechanism is provided on the screening box. Multiple ball receiving mechanisms are provided on the top of the base plate. Multiple self-locking casters are fixedly installed on the bottom surface of the base plate.

[0008] As a preferred embodiment of this utility model, the screening mechanism includes multiple collection hoppers fixedly sleeved at the bottom of the screening box and multiple mounting brackets fixedly connected to the bottom of the screening box. Each of the multiple collection hoppers has a screen plate fixedly sleeved at the top of its inner cavity. The screen plate has multiple screen holes. Each of the multiple mounting brackets has an electric push rod fixedly installed on it. The output end of the electric push rod is fixedly connected to a baffle. The top of the baffle is movably sleeved into the inner cavity of the screening box, and the side of the top of the baffle is in contact with the inner wall of the screening box.

[0009] As a preferred embodiment of the present invention, the ball receiving mechanism includes a placement groove formed on the top surface of the base plate, a ball receiving box placed in the inner cavity of the placement groove, and handles fixedly connected to both ends of the ball receiving box, the ball receiving box being located directly below the collecting hopper.

[0010] In a preferred embodiment of this utility model, a control panel is fixedly installed on the outer side of one of the support plates, and the control panel is electrically connected to the first hydraulic rod, the second hydraulic rod, and the electric push rod.

[0011] As a preferred embodiment of this utility model, the inner diameter of the sieve holes on the plurality of sieve plates gradually increases from left to right.

[0012] In a preferred embodiment of this utility model, the side of the ball receiving box is fitted to the inner wall of the placement groove.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) In this utility model, the device can be moved by the self-locking casters so that the device can screen different ball mill steel balls, and the height of the screening box and the ball receiving hopper can be adjusted by the first hydraulic rod so that the ball receiving hopper can receive the steel balls at the ball mill steel ball discharge outlet of different heights so as to adapt to screening steel balls in ball mills of different shapes and heights.

[0015] (2) In this utility model, when the steel balls entering the screening box are screened, the second hydraulic rod drives the lifting frame and the screening box to move up and down, so that the steel balls entering the inner cavity of the screening box will vibrate, ensuring the quality of the steel balls screening. The steel balls are blocked by multiple baffles, increasing the time the steel balls stay on multiple screen plates, ensuring effective screening of the steel balls. It has good practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the base plate of this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of the screening box of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the screening box of this utility model.

[0020] Explanation of the labels in the diagram:

[0021] 1. Base plate; 2. First hydraulic rod; 3. Support plate; 4. Second hydraulic rod; 5. Support column; 6. Lifting frame; 7. Screening box; 8. Ball receiving hopper; 9. Screening mechanism; 10. Self-locking casters; 11. Ball receiving mechanism; 12. Collection hopper; 13. Mounting frame; 14. Screen plate; 15. Screen holes; 16. Electric push rod; 17. Baffle; 18. Placement slot; 19. Ball receiving box; 20. Handle; 21. Control panel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] Please see Figure 1-4 A ball grate screen for an ore ball mill includes a base plate 1. Four first hydraulic rods 2 are fixedly installed on the top surface of the base plate 1. A support plate 3 is fixedly connected to the top of each pair of first hydraulic rods 2. A set of second hydraulic rods 4 is fixedly installed on the top surface of each pair of support plates 3. A support column 5 is fixedly connected to the top of each pair of second hydraulic rods 4. A lifting frame 6 is fixedly connected to the top of each pair of support columns 5. A screening box 7 is fixedly connected between the two lifting frames 6. A ball receiving hopper 8 is fixedly sleeved on the top of one end of the screening box 7. A screening mechanism 9 is provided on the screening box 7. Multiple ball receiving mechanisms 11 are provided on the top of the base plate 1. Multiple self-locking casters 10 are fixedly installed on the bottom surface of the base plate 1.

[0027] In this embodiment, both the lifting frame 6 and the screening box 7 are inclined to ensure that the steel balls in the screening box 7 can roll downwards. In addition, this device is powered by an external power supply, which is existing technology and will not be described in detail.

[0028] For details, please refer to Figure 1 , Figure 3 and Figure 4 The screening mechanism 9 includes multiple collection hoppers 12 fixedly sleeved at the bottom of the screening box 7 and multiple mounting brackets 13 fixedly connected to the bottom of the screening box 7. Each collection hopper 12 has a screen plate 14 fixedly sleeved at the top of its inner cavity. Multiple screen holes 15 are opened on the screen plate 14. Electric push rods 16 are fixedly installed on the mounting brackets 13. A baffle 17 is fixedly connected to the output end of the electric push rod 16. The top of the baffle 17 is movably sleeved into the inner cavity of the screening box 7. The side of the top of the baffle 17 is in contact with the inner wall of the screening box 7.

[0029] In this embodiment, the top surface of the sieve plate 14 is flush with the bottom surface of the inner cavity of the screening box 7, ensuring that the steel balls can move smoothly within the inner cavity of the screening box 7.

[0030] For details, please refer to Figure 1 and Figure 2The ball receiving mechanism 11 includes a placement groove 18 on the top surface of the base plate 1. A ball receiving box 19 is placed inside the placement groove 18. Handles 20 are fixedly connected to both ends of the ball receiving box 19. The ball receiving box 19 is located directly below the collection hopper 12.

[0031] In this embodiment, steel balls falling from the collection hopper 12 are collected by multiple ball receiving boxes 19, and the ball receiving boxes 19 are lifted and transported by the handle 20.

[0032] For details, please refer to Figures 1 to 3 One of the support plates 3 has a control panel 21 fixedly installed on its outer side. The control panel 21 is electrically connected to the first hydraulic rod 2, the second hydraulic rod 4, and the electric push rod 16.

[0033] In this embodiment, the first hydraulic rod 2, the second hydraulic rod 4, and the electric push rod 16 are controlled by the control panel 21.

[0034] For details, please refer to Figure 3 The inner diameter of the sieve holes 15 on the multiple sieve plates 14 gradually increases from left to right.

[0035] In this embodiment, the sieve holes 15 on the multiple sieve plates 14 are designed to sieve steel balls of different outer diameters.

[0036] For details, please refer to Figure 1 and Figure 2 The side of the ball receiving box 19 fits against the inner wall of the placement slot 18.

[0037] Working Principle: In operation, the self-locking casters 10 first move the device, causing the ball-receiving hopper 8 on the screening box 7 to move directly below the ball mill's steel ball outlet. The self-locking casters 10 then secure the device. Next, the first hydraulic rod 2 is activated, moving the support plate 3, the second hydraulic rod 4, the lifting frame 6, the screening box 7, and the ball-receiving hopper 8 upwards. This positions the ball-receiving hopper 8 a certain distance below the ball mill's steel ball outlet, ensuring all steel balls are collected from the ball-receiving hopper 8 into the inner cavity of the screening box 7. Then, the first hydraulic rod 2 is activated, moving the support plate 3, the screening box 7, and other structures downwards. This positions the multiple collection hoppers 12 below the screening box 7 above the multiple ball-receiving hoppers 19. Then, the second hydraulic rod 4 is activated to drive the lifting frame 6 and the screening box 7 to move up and down repeatedly, thereby causing the steel balls on the top surface of the first screen plate 14 in the inner cavity of the screening box 7 to move up and down, so that the steel balls with an outer diameter smaller than the inner diameter of the screen hole 15 on the screen plate 14 fall down and are guided from the collection hopper 12 into a ball receiving box 19 for collection. Finally, the electric push rod 16 is activated to drive the baffle 17 to move down, so that the top surface of the baffle 17 is flush with the bottom surface of the inner cavity of the screening box 7, so that the remaining steel balls move to the top surface of the second screen plate 14 and are screened again through the screen hole 15 on the second screen plate 14. In this way, the steel balls are screened step by step through the screen holes 15 with different inner diameters on multiple screen plates 14.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A ball discharge screen for an ore ball mill, characterised in that: The application relates to a ball screening device, which comprises a bottom plate (1), four first hydraulic rods (2) fixedly arranged on the top surface of the bottom plate (1), two support plates (3) fixedly connected to the top ends of every two first hydraulic rods (2), a group of second hydraulic rods (4) fixedly arranged on the top surfaces of the two support plates (3), support columns (5) fixedly connected to the top ends of the two groups of second hydraulic rods (4), lifting frames (6) fixedly connected to the top ends of the two groups of support columns (5), a screening box (7) fixedly connected between the two lifting frames (6), a ball receiving hopper (8) fixedly sleeved with the top of one end of the screening box (7), a screening mechanism (9) arranged on the screening box (7), a plurality of ball receiving mechanisms (11) arranged on the top of the bottom plate (1), and a plurality of self-locking casters (10) fixedly arranged on the bottom surface of the bottom plate (1).

2. A ball discharge screen for an ore ball mill according to claim 1, characterised in that: The screening mechanism (9) comprises a plurality of collecting hoppers (12) fixedly sleeved with the bottom of the screening box (7) and a plurality of mounting racks (13) fixedly connected with the bottom of the screening box (7), a sieve plate (14) fixedly sleeved with the top of the inner cavity of each collecting hopper (12), a plurality of sieve holes (15) arranged on the sieve plate (14), an electric push rod (16) fixedly arranged on each mounting rack (13), a baffle (17) fixedly connected with the output end of the electric push rod (16), and the baffle (17) movably sleeved with the inner cavity of the screening box (7) at the top end.

3. A ball discharge screen for an ore ball mill according to claim 2, characterised in that: The ball receiving mechanism (11) comprises a placing groove (18) arranged on the top surface of the bottom plate (1), a ball receiving box (19) arranged in the inner cavity of the placing groove (18), handles (20) fixedly connected with the two ends of the ball receiving box (19), and the ball receiving box (19) located directly below the collecting hopper (12).

4. A ball sizing screen for an ore ball mill as claimed in claim 2, characterised in that: The outer side of one of the support plates (3) is fixedly provided with a control panel (21), and the control panel (21) is electrically connected with the first hydraulic rods (2), the second hydraulic rods (4) and the electric push rods (16).

5. A ball discharge screen for an ore ball mill as claimed in claim 2, characterised in that: The inner diameters of the sieve holes (15) on the plurality of sieve plates (14) gradually increase from left to right.

6. A ball discharge screen for an ore ball mill according to claim 3, characterised in that: The side of the ball receiving box (19) is attached to the inner wall of the placing groove (18).

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