Feeding device of ball mill

Abstract

The ball mill feeding device comprises a feeding cavity, a filling opening is formed in the upper portion of the feeding cavity, a star-shaped discharger is connected to the lower portion of the feeding cavity, and a baffle assembly and a transmission assembly are arranged on the upper portion of the feeding cavity; the baffle assembly comprises a movable plate, limiting frames are arranged on the two sides of the movable plate, positioning columns are connected to the two sides of the movable plate and embedded in the limiting frames, and a toothed plate is connected to the positioning columns on one side of the movable plate. The transmission assembly comprises a servo motor, the servo motor is connected with an input shaft of a speed reducer, an output shaft of the speed reducer is connected with a worm, transmission threads of the worm are matched with a worm gear, the worm gear is meshed with the toothed plate, and the worm gear is rotationally connected with the top of the feeding cavity through a rotating shaft. The response speed is improved, the labor intensity of workers is reduced, and the life safety of the workers is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of ore dressing equipment, in particular to a feeding device for a ball mill. Background Art

[0002] A ball mill is a device for further pulverizing materials after they are crushed. For example, in a molybdenum ore dressing system, a ball mill is an essential device. Molybdenum ore is fed into the ball mill through a feeding mechanism. After the ball mill crushes the molybdenum ore, the molybdenum ore powder is further processed.

[0003] The existing feeding device for a ball mill is as Figure 2 shown. A discharge valve 100 is connected below a feeding chamber 1. Materials are fed into the feeding chamber 1 through a filling port 11 at the upper part of the feeding chamber 1. The ore in the feeding chamber 1 is output through the discharge valve 100 and then conveyed to the ball mill. During the feeding process, a partition plate needs to be manually operated to block the filling port 11 to adjust the size of the filling port 11, thereby controlling the feeding amount of the filling port 11.

[0004] The problems existing therein are that the response speed of manual operation is slow, the operation error is large, and sometimes after the discharge valve is closed, the filling port fails to be closed in time, resulting in a large amount of ore accumulating in the feeding device, affecting the next startup. The manual operation has a high labor intensity, and workers often operate at the filling port, which poses a safety hazard of falling from the filling port. Summary of the Utility Model

[0005] To solve the problems in the above background art, the present application proposes a feeding device for a ball mill, which is used to control the feeding amount at the filling port, improve the response speed, reduce the labor intensity of workers, and ensure the life safety of workers.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A feeding device for a ball mill includes a feeding chamber. A filling port is arranged at the upper part of the feeding chamber. A star-shaped discharge device is connected to the lower part of the feeding chamber. The star-shaped discharge device is connected to the ball mill to feed materials to the ball mill. A baffle assembly and a transmission assembly are arranged at the upper part of the feeding chamber;

[0008] The baffle assembly includes a movable plate. Limit frames are arranged on both sides of the movable plate. Positioning columns are connected to both sides of the movable plate. The positioning columns are nested in the limit frames. A toothed plate is connected to the positioning column on one side of the movable plate;

[0009] The transmission assembly includes a servo motor, which is connected to the input shaft of a speed reducer. The output shaft of the speed reducer is connected to a worm, and the transmission thread of the worm is engaged with a worm gear. A transmission gear is arranged below the worm gear, and the transmission gear is engaged with a toothed plate. The worm gear and the transmission gear are connected to a rotating shaft, and the rotating shaft is rotatably connected to the top of the feeding chamber.

[0010] In one embodiment of the present application, a leakage groove is provided at the stuffing opening.

[0011] In one embodiment of the present application, a plurality of air cannons are communicated and arranged on the side wall of the feeding chamber.

[0012] In one embodiment of the present application, a conveyor belt is arranged below the discharge port of the star-shaped discharger, and the conveyor belt is connected to the feeding port of the ball mill.

[0013] In one embodiment of the present application, a scraper is connected to the side wall of the star-shaped discharger.

[0014] In one embodiment of the present application, the type of the speed reducer is a self-locking speed reducer.

[0015] In one embodiment of the present application, a protective cover is sleeved outside the transmission device.

[0016] The beneficial effects of the present application are as follows: The rotation of the input shaft of the speed reducer driven by the servo motor drives the rotation of the thread on the worm connected to the output shaft of the speed reducer. The thread on the worm is engaged with the worm gear, so that the rotation of the thread on the worm pushes the worm gear to rotate. The worm gear and the transmission gear are connected to the same rotating shaft, and the rotation of the worm gear can drive the transmission gear to rotate. The transmission gear is engaged with the toothed plate, so that the transmission gear drives the toothed plate to move. The movement of the toothed plate drives the movable plate to move at the stuffing opening to control the size of the stuffing opening and realize the control of the feeding amount at the stuffing opening. The transmission control of the servo motor through the circuit improves the response speed compared with manual operation, reduces the labor intensity of the staff, and ensures the life safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the ball mill feeding device provided by one embodiment of the present application;

[0019] Figure 2Schematic diagram of the structure of the feeding device of a ball mill in the prior art;

[0020] Figure 3 is Figure 1 the enlarged view of part A of

[0021] Figure 4 Top view structure schematic diagram of the feeding chamber of the ball mill feeding device provided by an embodiment of the present application;

[0022] Figure 5 Schematic diagram of the structure of the ball mill feeding device provided by an embodiment of the present application;

[0023] Figure 6 Schematic diagram of the baffle assembly structure of the ball mill feeding device provided by an embodiment of the present application;

[0024] Figure 7 Schematic diagram of the connection structure between the toothed plate and the movable plate of the ball mill feeding device provided by an embodiment of the present application;

[0025] In the figure: feeding chamber - 1;

[0026] feeding port - 11, star unloader - 12, air cannon - 13;

[0027] leakage trough - 111, conveyor belt - 121, scraper - 122;

[0028] baffle assembly - 2;

[0029] movable plate - 21, limit frame - 22, positioning post - 23;

[0030] toothed plate - 231;

[0031] transmission assembly - 3;

[0032] servo motor - 31, reducer - 32, worm - 33, worm gear - 34, protective cover - 35, transmission gear - 36;

[0033] rotating shaft - 4;

[0034] discharge valve - 100. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall also fall within the scope of protection of the present application.

[0036] It should be noted that in the description of this application, the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this application.

[0037] In this application, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] A ball mill feeding device provided in this embodiment, as Figures 1-7 shown, includes a feeding chamber 1. A filling port 11 is provided at the upper part of the feeding chamber 1. A star-shaped discharger 12 is connected to the lower part of the feeding chamber 1. The star-shaped discharger 12 is connected to the ball mill and is used for feeding the ball mill. The discharge port of the star-shaped discharger 12 can be connected to the feed inlet of the ball mill through a conveying device to realize the star-shaped discharger 12 feeding ore to the ball mill. A baffle assembly 2 and a transmission assembly 3 are provided at the upper part of the feeding chamber 1;

[0039] The baffle assembly 2 includes a movable plate 21. Limiting frames 22 are provided on both sides of the movable plate 21. Positioning columns 23 are connected to both sides of the movable plate 21. The positioning columns 23 are nested in the limiting frames 22. A toothed plate 231 is connected to the positioning column 23 on one side of the movable plate 21;

[0040] The transmission assembly 3 includes a servo motor 31. The servo motor 31 is connected to the input shaft of a speed reducer 32. A worm 33 is connected to the output shaft of the speed reducer 32. The transmission thread of the worm 33 is engaged with a worm gear 34. A transmission gear 36 is provided below the worm gear 34. The transmission gear 36 is engaged with the toothed plate 231. The worm gear 34 and the transmission gear 36 are connected to a rotating shaft 4. The rotating shaft 4 is rotatably connected to the top of the feeding chamber 1.

[0041] As Figure 1 and Figure 3As shown in the figure, the limiting frame 22 is fixed on both sides of the filler opening 11. The movable plate 21 is arranged above the filler opening 11. The positioning columns 23 on both sides of the movable plate 21 are nested in the limiting frame 22. That is, the movable plate 21 can move above the filler opening 11 along the setting direction of the limiting frame 22 to block or partially block the filler opening 11, so as to control the feeding amount at the filler 11. Further, the input shaft of the reducer 32 is driven to rotate by the servo motor 31 through circuit control, and then the thread on the worm 33 connected to the output shaft of the reducer 32 rotates. The servo motor 31 drives the reducer 32 to transmit power. On the one hand, the reducer 32 can reduce the transmission speed of the servo motor 31 to improve the control accuracy. On the other hand, the servo motor 31 can increase the transmission torque, which is beneficial to the transmission control. The thread on the worm 33 cooperates with the worm gear 34, and then the rotation of the thread on the worm 33 pushes the worm gear 34 to rotate. The transmission gear 36 is arranged below the worm gear 34, and the worm gear 34 and the transmission gear 36 are connected by a rotating shaft 4. The rotation of the worm gear 34 drives the rotating shaft 4 to rotate, and the rotation of the rotating shaft 4 drives the transmission gear 36 to rotate. The transmission gear 36 meshes with the toothed plate 231. The rotation of the transmission gear 36 can drive the toothed plate 231 to move, and the movement of the toothed plate 231 drives the movable plate 21 to move at the filler opening 11 to control the opening size of the filler opening 11 and realize the control of the feeding amount at the filler opening 11. The transmission control of the servo motor 31 through circuit control improves the response speed compared with manual operation, reduces the labor intensity of the staff, and ensures the life safety of the staff.

[0042] In an embodiment of the present application, as Figure 1 shown, a leakage groove 111 is provided at the filler opening 11.

[0043] It is used to guide the ore material entering the filler opening 11 to avoid the accumulation of ore material in the upper part of the feeding cavity 1.

[0044] In an embodiment of the present application, as Figure 5 shown, a plurality of air cannons 13 are communicated and arranged on the side wall of the feeding cavity 1.

[0045] During the filling process, the ore material will adhere to the inner wall of the feeding cavity 1 and is difficult to clean. High-pressure gas is injected into the feeding cavity 1 through the air cannons 13 to knock down the ore material adhering to the inner wall of the feeding cavity 1, so as to clean the ore material adhering to the inner wall of the feeding cavity 1.

[0046] In an embodiment of the present application, as Figure 5 shown, a conveyor belt 121 is arranged below the discharge port of the star-shaped unloader 12, and the conveyor belt 121 is connected to the feed inlet of the ball mill.

[0047] After the ore material falls from the rotary feeder 12, it is conveyed by the conveyor belt 121 to the feed inlet of the ball mill, thereby realizing further pulverization of the ore material in the ball mill. The conveyor belt 121 can improve the feeding efficiency. Compared with manual feeding, the feeding by the conveyor belt 121 is beneficial to improving the feeding stability.

[0048] In an embodiment of the present application, a scraper 122 is connected to the side wall of the rotary feeder 12.

[0049] The rotary feeder 12 releases intermittently during feeding, which will cause the ore material on the conveyor belt 121 to show uneven distribution. By arranging the scraper 122 on the side wall of the rotary feeder 12, that is, above the conveyor belt 121, the scraper 122 is arranged at a certain height above the conveyor belt 121. The ore material piled up at different heights on the conveyor belt 121 passes through the scraper 122, and the ore material can be scraped flat and evenly spread on the conveyor belt 121, which is beneficial to improving the uniformity of feeding.

[0050] In an embodiment of the present application, the type of the speed reducer 32 is a self-locking speed reducer.

[0051] The self-locking speed reducer can achieve self-locking when the servo motor stops working, avoiding the transmission device from rotating again when the servo motor stops working, and can improve the stability of the transmission device.

[0052] In an embodiment of the present application, as Figure 5 shown, a protective cover 35 is sleeved outside the transmission device.

[0053] Prevent dust or crushed stone materials from rubbing against the transmission components and accelerating the aging of the components, resulting in component failures and affecting the normal operation of the equipment.

[0054] During the actual use of the present application: The limit frame 22 is fixed on both sides of the filling port 11. The movable plate 21 is arranged above the filling port 11. The positioning columns 23 on both sides of the movable plate 21 are nested in the limit frame 22. A toothed plate 231 is connected to the positioning column 23 on one side of the movable plate 21. The circuit controls the servo motor 31 to drive the rotation of the input shaft of the speed reducer 32, and then drives the rotation of the thread on the worm 33 connected to the output shaft of the speed reducer 32. The thread on the worm 33 cooperates with the worm gear 34, so that the rotation of the thread on the worm 33 pushes the worm gear 34 to rotate. The transmission gear 36 is arranged below the worm gear 34, and the worm gear 34 and the transmission gear 36 are connected by a rotating shaft 4. The rotation of the worm gear 34 drives the rotation of the rotating shaft 4, and the rotation of the rotating shaft 4 drives the rotation of the transmission gear 36. The transmission gear 36 meshes with the toothed plate 231, and the rotation of the transmission gear 36 can drive the toothed plate 231 to move. The movement of the toothed plate 231 drives the movable plate 21 to move at the filling port 11, so as to control the opening size of the filling port 11 and realize the control of the feeding amount at the filling port 11.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A ball mill feeding device, comprising a feeding chamber (1), wherein a filling port (11) is provided at the upper portion of the feeding chamber (1), characterized in that: The lower part of the feeding chamber (1) is connected to a star-shaped discharger (12), and the star-shaped discharger (12) is connected to the ball mill and is used to feed the ball mill. The upper part of the feeding chamber (1) is provided with a baffle assembly (2) and a transmission assembly (3); The baffle assembly comprises a movable plate (21), and limit frames (22) are arranged on both sides of the movable plate (21). Positioning columns (23) are connected to both sides of the movable plate (21), and the positioning columns (23) are nested in the limit frames (22). The positioning column (23) on one side of the movable plate (21) is connected to a tooth plate (231); The transmission assembly (3) comprises a servo motor (31), the servo motor (31) is connected to the input shaft of a reducer (32), the output shaft of the reducer (32) is connected to a worm (33), the transmission thread of the worm (33) is matched with a worm wheel (34), a transmission gear (36) is arranged below the worm wheel (34), the transmission gear (36) is meshed with a toothed plate (231), the worm wheel (34) and the transmission gear (36) are connected to a rotating shaft (4), and the rotating shaft (4) is rotatably connected to the top of the feeding chamber (1).

2. The ball mill feeding device according to claim 1, characterized in that: A drain groove (111) is provided at the filling port (11).

3. The ball mill feeding device according to claim 1, characterized in that: The side wall of the feeding chamber (1) is connected to a plurality of air cannons (13).

4. The ball mill feeding device according to claim 1, characterized in that: A conveyor belt (121) is arranged below the discharge port of the star-shaped discharger (12), and the conveyor belt (121) is connected to the feed port of the ball mill.

5. The ball mill feeding device according to claim 3, characterized in that: The side wall of the star-shaped discharger (12) is connected with a scraper (122).

6. The ball mill feeding device according to claim 2, characterized in that: The reducer (32) is a self-locking reducer.

7. The ball mill feeding device according to claim 1, characterized in that: The transmission assembly (3) is externally sleeved with a protective cover (35).

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