Efficient discharging device of coal ball mill

Abstract

The utility model discloses an efficient discharging device of a coal ball mill, which comprises a bottom plate and a mounting seat mounted on the outer wall of one side of the bottom plate, a ball mill body is arranged at the top of the mounting seat, a hopper is arranged on one side of the ball mill body, and a connecting plate is arranged on the outer wall of one side of the bottom plate. The dynamic screening mechanism comprises three supporting rods arranged on the outer wall of the top of the connecting plate, the outer walls of the tops of the three supporting rods are provided with the same discharging barrel, the inner wall of the discharging barrel is connected with a screening hopper through a bearing, and screening holes distributed at equal intervals are formed in the outer wall of the screening hopper. The efficient discharging device of the coal ball mill has the technical effects that the processing sufficiency of the ball mill is improved, and blockage in the coal leading-out process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal ball mills, in particular to an efficient discharging device for coal ball mills. Background Art

[0002] As a key device for preparing water coal slurry, the coal ball mill is mainly used for wet grinding of coal particles or petroleum coke particles that have been coarsely crushed and finely crushed to obtain fine particle products that meet the requirements of the water coal slurry preparation process. This process is crucial for ensuring the quality and performance of the water coal slurry.

[0003] When a traditional ball mill is in use, the grinding time of the ball mill is relatively short, which results in insufficient grinding of the raw materials in the mill, thereby affecting the fineness and uniformity of the coal particles. When these inadequately ground primary products enter the buffer tank for stirring, the thixotropy of the obtained water coal slurry becomes weaker. Therefore, an efficient discharging device for coal ball mills is needed to solve the above problems. Summary of the Utility Model

[0004] The utility model discloses an efficient discharging device for coal ball mills, aiming to solve the technical problem that when a traditional ball mill is in use, the grinding time of the ball mill is relatively short, which results in insufficient grinding of the raw materials in the mill, thereby affecting the fineness and uniformity of the coal particles. When these inadequately ground primary products enter the buffer tank for stirring, the thixotropy of the obtained water coal slurry becomes weaker.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The efficient discharging device for coal ball mills includes a bottom plate and a mounting seat installed on the outer wall of one side of the bottom plate. A ball mill body is provided on the top of the mounting seat. A hopper is provided on one side of the ball mill body. A connecting plate is provided on the outer wall of one side of the bottom plate. It further includes: a dynamic screening mechanism: The dynamic screening mechanism includes three support rods arranged on the outer wall of the top of the connecting plate. The same discharging cylinder is installed on the outer walls of the tops of the three support rods. A sieve hopper is connected to the inner wall of the discharging cylinder through a bearing. Sieve holes are provided at equal intervals on the outer wall of the sieve hopper. A second discharge pipe is installed on one side of the outer wall of the top of the discharging cylinder. A first discharge pipe is provided on the outer wall of one side of the ball mill body. One end of the first discharge pipe is connected to the outer wall of the bottom of the discharging cylinder; a transmission mechanism: The transmission mechanism is connected to the dynamic screening mechanism.

[0007] In this solution, the dynamically screening mechanism can be used to transfer the coal material after grinding by the ball mill body. Under the action of the transmission mechanism, the screening bucket can be driven to rotate in the discharge cylinder, so as to screen the coal material led out by the first outlet pipe. The large particle coal material that is not sufficiently ground will be screened out, and the sufficiently ground coal material can pass through the screening bucket in the discharge cylinder and finally be led out through the second outlet pipe.

[0008] In a preferred solution, equidistantly circumferentially distributed return holes are provided at the edge of the inner wall of the bottom of the screening bucket. A return pipe is also provided at the connection between the first outlet pipe and the discharge cylinder. One end of the return pipe away from the discharge cylinder is connected to one side of the hopper. The return holes cooperate with the return pipe, and the return pipe is arranged in an inclined structure.

[0009] The cooperation of the return pipe with a smooth transition and an inclined structure and the return holes on the inner wall of the screening bucket can effectively recover the coal material that is not sufficiently ground and then grind it again. At the same time, it can also prevent the accumulation of part of the coal material that passes through the screening bucket and remains therein, achieving a good dredging effect.

[0010] In a preferred solution, the transmission mechanism includes a mounting bracket provided on the outer wall of the top of the connecting plate. A motor is installed on the inner wall of the top of the mounting bracket. One end of the output shaft of the motor is connected to a driving roller. The top outer wall of the discharge cylinder is connected by a bearing to a driven roller. A rotating rod is installed on the outer wall of the bottom of the driven roller, and the bottom end of the rotating rod is connected to the central position of the inner wall of the bottom of the screening bucket. The driving roller and the driven roller are sleeved with the same transmission belt on their outer walls.

[0011] Through the provided transmission mechanism, during the driving process of the motor, the driving roller, the transmission belt and the driven roller can be used to drive and cooperate to provide power for the rotation of the rotating rod, so as to drive the screening bucket to rotate on the inner wall of the discharge cylinder, so as to screen the coal material more effectively.

[0012] As can be seen from the above, the high-efficiency discharging device of the coal ball mill includes a bottom plate and a mounting seat installed on the outer wall of one side of the bottom plate. A ball mill body is provided on the top of the mounting seat. A hopper is provided on one side of the ball mill body. A connecting plate is provided on the outer wall of one side of the bottom plate. It further includes: a dynamic screening mechanism: the dynamic screening mechanism includes three support rods arranged on the outer wall of the top of the connecting plate. The same discharging cylinder is installed on the outer walls of the tops of the three support rods. A sieve hopper is connected to the inner wall of the discharging cylinder through a bearing. Sieve holes are provided at equal intervals on the outer wall of the sieve hopper. A second discharge pipe is installed on one side of the outer wall of the top of the discharging cylinder. A first discharge pipe is provided on the outer wall of one side of the ball mill body. One end of the first discharge pipe is connected to the outer wall of the bottom of the discharging cylinder; a transmission mechanism: the transmission mechanism is connected to the dynamic screening mechanism. The high-efficiency discharging device of the coal ball mill provided by the present invention has the technical effects of improving the sufficiency of the ball mill processing and avoiding blockage during the coal discharging process. Description of the Drawings

[0013] Figure 1 FIG. is a schematic diagram of the overall structure of the high-efficiency discharging device of the coal ball mill proposed by the present invention.

[0014] Figure 2 FIG. is a side view of the structure of the high-efficiency discharging device of the coal ball mill proposed by the present invention.

[0015] Figure 3 FIG. is a structural installation diagram of the discharging cylinder of the high-efficiency discharging device of the coal ball mill proposed by the present invention.

[0016] Figure 4 FIG. is a partially enlarged structural schematic diagram of the sieve hopper of the high-efficiency discharging device of the coal ball mill proposed by the present invention.

[0017] In the drawings: 1, bottom plate; 2, connecting plate; 3, heating system; 4, ball mill body; 5, hopper; 6, heat conduction pipe; 7, return pipe; 8, support rod; 9, mounting bracket; 10, discharging cylinder; 11, second discharge pipe; 12, first discharge pipe; 13, transmission belt; 14, driving roller; 15, driven roller; 16, sieve hopper; 17, rotating rod; 18, return hole; 19, sieve hole. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Usually, the components of the embodiments of the present application described and marked in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents the selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0019] The high-efficiency discharging device for coal ball mills disclosed by the utility model is mainly applied to the scenario where in the use of traditional ball mills, the grinding time of the ball mill is relatively short, which results in insufficient grinding of the raw materials in the mill, thus affecting the fineness and uniformity of coal particles. When these inadequately ground primary products enter the buffer tank for stirring, the thixotropy of the obtained water coal slurry becomes weaker.

[0020] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in, the high-efficiency discharging device for coal ball mills includes a bottom plate 1 and a mounting seat installed on the outer wall of one side of the bottom plate 1. A ball mill body 4 is provided on the top of the mounting seat. A hopper 5 is provided on one side of the ball mill body 4. A connecting plate 2 is provided on the outer wall of one side of the bottom plate 1. It further includes: a dynamic screening mechanism: The dynamic screening mechanism includes three support rods 8 provided on the outer wall of the top of the connecting plate 2. The same discharging cylinder 10 is installed on the outer wall of the top of the three support rods 8. A sieve hopper 16 is connected to the inner wall of the discharging cylinder 10 through a bearing. Sieve holes 19 are provided at equal distances on the outer wall of the sieve hopper 16. A second discharge pipe 11 is installed on one side of the outer wall of the top of the discharging cylinder 10. A first discharge pipe 12 is provided on the outer wall of one side of the ball mill body 4. One end of the first discharge pipe 12 is connected to the outer wall of the bottom of the discharging cylinder 10;

[0021] A transmission mechanism: The transmission mechanism is connected to the dynamic screening mechanism.

[0022] In this solution, the dynamic screening mechanism provided can perform a transfer process on the coal material after being ground by the ball mill body 4. Under the action of the transmission mechanism, the sieve hopper 16 can be driven to rotate in the discharging cylinder 10, so as to screen the coal material discharged from the first discharge pipe 12. The large particle coal material that is not sufficiently ground will be screened out, and the sufficiently ground coal material can pass through the sieve hopper 16 in the discharging cylinder 10 and finally be discharged from the second discharge pipe 11.

[0023] Among them, the screening hopper 16 is set as a hollow inverted cone structure. The central position at the bottom of the screening hopper 16 is directly opposite to the outlet position of the first outlet pipe 12. The conical tip at the bottom of the screening hopper 16 can divert the coal material introduced by the first outlet pipe 12, ensuring that the screening hopper 16 can screen more fully.

[0024] In addition, the lower surface of the screening hopper 16 is covered with a ceramic coating, effectively improving the wear resistance effect.

[0025] Specifically, equidistantly circumferentially distributed return holes 18 are provided at the edge of the inner wall at the bottom of the screening hopper 16. A return pipe 7 is also provided at the connection between the first outlet pipe 12 and the discharge cylinder 10. One end of the return pipe 7 away from the discharge cylinder 10 is connected to one side of the hopper 5. The return holes 18 and the return pipe 7 are used in cooperation, and the return pipe 7 is set as an inclined structure.

[0026] The inclined return pipe 7 with a smooth transition and the return holes 18 on the inner wall of the screening hopper 16 cooperate with each other, which can effectively recover the coal material that is not fully ground and then grind it twice. At the same time, it can also prevent the accumulation of part of the coal material retained in the screening hopper 16, playing a good dredging effect.

[0027] Refer to Figure 2 、 Figure 3 and Figure 4 In a preferred embodiment, the transmission mechanism includes a mounting bracket 9 provided on the outer wall of the top of the connecting plate 2. A motor is installed on the inner wall of the top of the mounting bracket 9. One end of the output shaft of the motor is connected to a driving roller 14. The outer wall of the top of the discharge cylinder 10 is connected to a driven roller 15 through a bearing. A rotating rod 17 is installed on the outer wall of the bottom of the driven roller 15. The bottom end of the rotating rod 17 is connected to the central position of the inner wall of the bottom of the screening hopper 16, and the same transmission belt 13 is sleeved on the outer walls of the driving roller 14 and the driven roller 15.

[0028] Specifically, through the set transmission mechanism, during the driving process of the motor, the driving roller 14, the transmission belt 13 and the driven roller 15 can be used to provide power for the rotation of the rotating rod 17 through transmission cooperation, thereby driving the screening hopper 16 to rotate inside the inner wall of the discharge cylinder 10, so as to screen the coal material more effectively.

[0029] It should be noted that with the action of the transmission mechanism, the entire discharge cylinder 10 will continuously vibrate, thereby achieving a vibrating effect and reducing the possibility of blockage.

[0030] Refer to Figure 1 and Figure 2 In a preferred embodiment, a heating system 3 is provided on the outer wall of the top of the bottom plate 1. A heat conduction pipe 6 is provided on one side of the heating system 3. The heat conduction pipe 6 is internally communicated with the ball mill body 4. During the ball milling process of the coal material, some raw materials may contain moisture. The intervention of the heating system 3 can make the coal material drier and assist in enhancing the ball milling effect.

[0031] Working principle: When in use, first, the pre-processed fine coal blocks are conveyed into the hopper 5 through the conveying device. The fine coal blocks enter the interior of the ball mill body 4 through the hopper 5. After being processed by the ball mill body 4, the coal material gradually becomes finer, and then is led out through the first outlet pipe 12 into the discharge cylinder 10 for screening. Under the action of the transmission mechanism, the motor starts, and the driving roller 14, the transmission belt 13 and the driven roller 15 are in transmission cooperation to provide power for the rotation of the rotating rod 17, thereby driving the screening hopper 16 to rotate on the inner wall of the discharge cylinder 10 and driving the screening hopper 16 to rotate in the discharge cylinder 10, so as to screen the coal material led out by the first outlet pipe 12. The large particle coal material that is not sufficiently pulverized will be screened down and re-enter the ball mill body 4 through the return pipe 7 for secondary grinding, while the sufficiently ground coal material is led out through the second outlet pipe 11.

[0032] As mentioned above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The substitution can be the substitution of part of the structure, device, method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present invention and its inventive concept should be covered within the protection scope of the present invention.

Claims

1. High-efficiency discharging device for coal ball mill, comprising a bottom plate (1) and a mounting seat installed on the outer wall of one side of the bottom plate (1), a ball mill body (4) is arranged on the top of the mounting seat, a hopper (5) is arranged on one side of the ball mill body (4), a connecting plate (2) is arranged on the outer wall of one side of the bottom plate (1), and it is characterized in that, It further includes: Dynamic screening mechanism: The dynamic screening mechanism includes three support rods (8) arranged on the outer wall of the top of the connecting plate (2). The outer wall of the top of the three support rods (8) is provided with the same discharge cylinder (10). The inner wall of the discharge cylinder (10) is connected with a sieve bucket (16) through a bearing. The outer wall of the sieve bucket (16) is provided with equally spaced sieve holes (19). One side of the outer wall of the top of the discharge cylinder (10) is provided with a second discharge pipe (11). One side of the outer wall of the ball mill body (4) is provided with a first discharge pipe (12). One end of the first discharge pipe (12) is connected to the outer wall of the bottom of the discharge cylinder (10). Transmission mechanism: The transmission mechanism is connected to the dynamic screening mechanism.

2. The high-efficiency discharging device for a coal ball mill according to claim 1, wherein The sieve bucket (16) is arranged in a hollow inverted cone structure, and the central position at the bottom of the sieve bucket (16) is directly opposite to the outlet position of the first discharge pipe (12).

3. The high-efficiency discharging device for coal ball mills according to claim 2, characterized in that, The edge of the inner wall of the bottom of the sieve bucket (16) is provided with equally spaced circumferentially distributed return holes (18). A return pipe (7) is also provided at the connection between the first discharge pipe (12) and the discharge cylinder (10). One end of the return pipe (7) away from the discharge cylinder (10) is connected to one side of the hopper (5). The return holes (18) and the return pipe (7) are used in cooperation.

4. The high-efficiency discharging device for coal ball mills according to claim 3, characterized in that, The return pipe (7) is arranged in an inclined structure.

5. The high-efficiency discharging device for coal ball mills according to claim 1, characterized in that, The transmission mechanism includes a mounting bracket (9) arranged on the outer wall of the top of the connecting plate (2). A motor is installed on the inner wall of the top of the mounting bracket (9). One end of the output shaft of the motor is connected with a driving roller (14).

6. The high-efficiency discharging device for coal ball mills according to claim 5, characterized in that, The outer wall of the top of the discharge cylinder (10) is connected with a driven roller (15) through a bearing. A rotating rod (17) is installed on the outer wall of the bottom of the driven roller (15). The bottom end of the rotating rod (17) is connected to the central position of the inner wall of the bottom of the sieve bucket (16). And the outer walls of the driving roller (14) and the driven roller (15) are sleeved with the same transmission belt (13).

7. The high-efficiency discharging device for coal ball mills according to claim 1, characterized in that, A heating system (3) is provided on the outer wall of the top of the bottom plate (1). A heat conduction pipe (6) is provided on one side of the heating system (3). The heat conduction pipe (6) is communicated with the inside of the ball mill body (4).

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