A highly efficient and clean preparation device for pulverized coal

Abstract

The present invention relates to the technical field of pulverized coal preparation devices, and specifically discloses a highly efficient and clean pulverized coal preparation device, comprising: a base; a cylinder, a lifting and unloading assembly, the lifting and unloading assembly being arranged on the base and being used to adjust the inclination of the cylinder; a storage assembly, the storage assembly being arranged on the base and being used to collect the coal powder inside the cylinder and the coal powder floating near the discharge pipe; a screening and isolation assembly; being used to separate steel balls and coal powder. When the present invention is in use, one side of the discharge pipe of the cylinder can be tilted downward by the lifting and unloading assembly, so that the steel balls in the cylinder will collide with the power transmission assembly. While isolating the steel balls, the steel balls can transfer their own kinetic energy to the power transmission assembly, and the power transmission assembly can thereby drive the cleaning assembly to clean the inner wall of the cylinder, so that the cylinder can be used normally next time.

Description

Technical Field

[0001] The invention relates to the technical field of ball mills, in particular to a device for efficiently and cleanly preparing pulverized coal. Background Art

[0002] In related technologies, when using coal to generate electricity, it is usually necessary to crush the coal into coal powder to increase the contact area with oxygen and improve the utilization rate of the coal.

[0003] Ball mills are commonly used to convert coal lumps into pulverized coal. However, during discharge, the pulverized coal easily adheres to the inner wall of the cylinder, resulting in unclean discharge and affecting the normal operation of the cylinder. Furthermore, after the ball mill is pulverized, the steel balls and pulverized coal must be discharged together and then loaded back into the cylinder, which is a cumbersome operation. Therefore, we propose an efficient and clean pulverized coal preparation device based on an improved existing ball mill. Summary of the Invention

[0004] The object of the present invention is to provide a device for preparing pulverized coal in an efficient and clean manner, which is improved on the basis of the existing ball mill to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a device for efficiently and cleanly preparing pulverized coal, comprising: a base; a cylinder, the cylinder comprising: a feed pipe and a discharge pipe, the feed pipe and the discharge pipe being rotatably connected to a bearing seat;

[0006] A lifting and unloading assembly, which is arranged on the base and fixedly connected to the bearing seat, and is used to adjust the inclination of the cylinder; a cleaning assembly, which is arranged inside the cylinder and close to one end of the nozzle of the discharge pipe to clean the inner wall of the cylinder; a power transmission assembly, which is arranged inside the cylinder and close to one side of the discharge pipe to isolate the steel balls and transfer the kinetic energy of the steel balls to the cleaning assembly.

[0007] In some examples of the present invention, the lifting and unloading assembly includes: a lifting plate fixed on the bearing seat, a plurality of hydraulic cylinders are arranged between the lifting plate and the base, the plurality of hydraulic cylinders are respectively arranged near the feed pipe and the discharge pipe, a plurality of connecting plates are provided on the side of the lifting plate facing the base, and the telescopic ends of the plurality of hydraulic cylinders are respectively rotatably connected to the plurality of connecting plates, and the fixed ends of the plurality of hydraulic cylinders are fixedly connected to the base.

[0008] In some examples of the present invention, the power transmission assembly includes: a flexible isolation plate, which is arranged in the cylinder and close to one side of the discharge pipe, and has a plurality of filter holes formed on the flexible isolation plate.

[0009] In some examples of the present invention, the cleaning assembly includes: a mounting frame, the mounting frame is a hollow structure, and the mounting frame is fixedly connected to the discharge pipe, a spring is fixedly connected between the discharge pipe and the flexible isolation plate, a first mounting seat is fixedly connected to the spring, a first rotating seat is rotatably connected to the first mounting seat, and the first rotating seat has a circular array of several first flexible scrapers that cooperate with the inner wall of the cylinder.

[0010] In some examples of the present invention, a second mounting seat is fixedly connected to the spring, the second mounting seat is located between the discharge pipe and the first mounting seat, a second rotating seat is rotatably connected to the second mounting seat, and the second rotating seat has a ring array of several second flexible scrapers that cooperate with the inner wall of the cylinder.

[0011] In some examples of the present invention, the second flexible scraper is an arc-shaped structure, and the opening direction of the second flexible scraper is toward the discharge pipe.

[0012] In some examples of the present invention, a foldable dustproof tube is fixedly connected between the mounting bracket and the second mounting seat, a foldable dustproof tube is fixedly connected between the second mounting seat and the first mounting seat, and a foldable dustproof tube is fixedly connected between the first mounting seat and the flexible isolation plate.

[0013] In some examples of the present invention, a device for efficiently and cleanly preparing pulverized coal further includes: a drive assembly, the drive assembly including: a drive base fixedly connected to the lifting plate, a motor and a reducer fixedly connected to the drive base, the output end of the motor cooperates with the reducer, two gear seats fixedly connected to the base, a transition gear is rotatably connected between the two gear seats, the gear shaft of the transition gear cooperates with the reducer, a drive gear is fixedly connected to the outer wall of the cylinder, and the drive gear cooperates with the transition gear.

[0014] The present invention has at least the following beneficial effects:

[0015] 1. When the present invention is in use, one side of the discharge pipe of the cylinder can be tilted downward by lifting the unloading assembly, so that the steel balls in the cylinder will collide with the power transmission assembly. While isolating the steel balls, the steel balls can transfer their own kinetic energy to the power transmission assembly. The power transmission assembly can thereby drive the cleaning assembly to clean the inner wall of the cylinder, so that the cylinder can be used normally next time.

[0016] 2. The present invention can further increase the cleaning area of ​​the inner wall of the cylinder by setting a second flexible scraper. The second flexible scraper is designed to be an arc structure with its opening facing the discharge pipe, which can also promote the discharge of coal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is one of the cross-sectional structural diagrams of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 4 It is a partial cross-sectional structural schematic diagram of the present invention;

[0021] Figure 5 for Figure 4 The enlarged schematic diagram of the structure at B in the middle;

[0022] Figure 6 This is the second schematic cross-sectional view of the present invention.

[0023] In the figure: 1. Cylinder; 11. Bearing seat; 12. Feed pipe; 13. Discharge pipe; 2. Base; 3. Lifting and unloading assembly; 31. Lifting plate; 32. Hydraulic cylinder; 33. Connecting plate; 4. Power transmission assembly; 41. Flexible isolation plate; 42. Filter hole; 5. Drive assembly; 51. Drive base; 52. Motor; 53. Reducer; 54. Transition gear; 55. Drive gear; 56. Gear seat; 6. Cleaning assembly; 61. Mounting frame; 62. Spring; 63. First mounting seat; 64. First rotating seat; 65. Second mounting seat; 66. Second rotating seat; 67. First flexible scraper; 68. Second flexible scraper; 69. Dustproof tube. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] See also Figure 1-6The present invention provides a technical solution: Example 1, a device for efficiently and cleanly preparing pulverized coal, comprising: a base 2, a cylinder 1, a lifting and unloading assembly 3, a cleaning assembly 6 and a power transmission assembly 4. The base 2 mainly serves the purpose of installation and support. The cylinder 1 is the main part of the ball mill, which is used to crush coal ore. The lifting and unloading assembly 3 is mainly used to rotate the cylinder 1, so as to facilitate the discharge of the cylinder 1. The cleaning assembly 6 mainly serves the purpose of cleaning, and can clean the coal powder attached to the inner wall of the cylinder 1. The power transmission assembly 4 mainly serves the purpose of transmitting kinetic energy and isolation, and can isolate the steel balls inside the cylinder 1, and transmit the kinetic energy of the steel balls to the cleaning assembly 6, so that the driving assembly 5 can work better.

[0026] like Figure 1 and Figure 2 As shown, the cylinder 1 includes a feed pipe 12 and a discharge pipe 13, both of which are rotatably connected to a bearing block 11. The cylinder 1 is the main body of the ball mill, used for pulverizing coal. The internal structure of the cylinder 1 is conventional and not shown. The feed pipe 12 primarily serves as a feed pipe, the discharge pipe 13 primarily serves as a discharge pipe, and the bearing block 11 primarily serves as a support.

[0027] like Figure 1 and Figure 2 As shown, the lifting and unloading assembly 3 is mounted on the base 2 and fixedly connected to the bearing seat 11, which is used to adjust the inclination of the cylinder 1. Placing the lifting and unloading assembly 3 on the base 2 secures and supports some of its components, enabling it to operate more effectively. The lifting and unloading assembly 3 is fixedly connected to the bearing seat 11, allowing the lifting assembly to adjust the inclination angle of the cylinder 1 by adjusting the height of the bearing seats 11 on both sides, thereby facilitating the discharge of the cylinder 1.

[0028] like Figure 2-Figure 4 As shown, the power transmission assembly 4 is arranged inside the cylinder 1, and the power transmission assembly 4 is close to the side of the discharge pipe 13 to isolate the steel balls and transfer the kinetic energy of the steel balls to the cleaning assembly 6. It should be noted that when unloading and cleaning the coal powder, the cylinder 1 needs to be tilted. Specifically, the height of the feed pipe 12 of the cylinder 1 is higher than the height of the discharge pipe 13. When the cylinder 1 is tilted, the steel balls inside the cylinder 1 will also move accordingly. Therefore, the power transmission assembly 4 is arranged inside the cylinder 1, and close to the side of the discharge pipe 13. This arrangement is more reasonable, and can make the power transmission assembly 4 better cooperate with the steel balls, and can prevent the steel balls from being discharged from the discharge pipe 13 together with the coal powder. Moreover, when the steel balls collide with the power transmission assembly 4, they will also provide kinetic energy to the power transmission assembly 4.

[0029] like Figure 2-Figure 6As shown, the cleaning assembly 6 is arranged inside the cylinder 1, and the cleaning assembly 6 is close to the end of the nozzle of the discharge pipe 13 to clean the inner wall of the cylinder 1. The cleaning assembly 6 is arranged inside the cylinder 1, which is more reasonable and convenient for the cleaning assembly 6 to clean the inner wall of the cylinder 1. The cleaning assembly 6 is close to the end of the nozzle of the discharge pipe 13, which makes it easier for the cleaned coal powder to be discharged from the discharge pipe 13.

[0030] Therefore, when in use, the discharge pipe 13 of the cylinder 1 can be tilted downward on one side by lifting the unloading assembly 3, so that the steel balls in the cylinder 1 will collide with the power transmission assembly 4. While isolating the steel balls, the steel balls can transfer their own kinetic energy to the power transmission assembly 4, and the power transmission assembly 4 can thereby drive the cleaning assembly 6 to clean the inner wall of the cylinder 1, so as to facilitate the normal use of the cylinder 1 next time.

[0031] In addition, if Figure 1 and Figure 2 As shown, the lifting and unloading assembly 3 includes: a lifting plate 31 fixed to the bearing seat 11, a plurality of hydraulic cylinders 32 are provided between the lifting plate 31 and the base 2, and the plurality of hydraulic cylinders 32 are respectively arranged near the feed pipe 12 and the discharge pipe 13. A plurality of connecting plates 33 are provided on the side of the lifting plate 31 facing the base 2, and the telescopic ends of the plurality of hydraulic cylinders 32 are respectively rotatably connected to the plurality of connecting plates 33, and the fixed ends of the plurality of hydraulic cylinders 32 are fixedly connected to the base 2. It should be noted that the lifting plate 31 is fixed to the lower end of the bearing seat 11, and four hydraulic cylinders 32 are provided, and the four hydraulic cylinders 32 are respectively arranged at the four corners of the lifting plate 31.

[0032] During use, when the cylinder 1 is working, the cylinder 1 is in a horizontal state. When the cylinder 1 finishes working, the four hydraulic cylinders 32 rise up at the same time, and the two hydraulic cylinders 32 on the side away from the discharge pipe 13 rise to a height greater than the height of the two hydraulic cylinders 32 on the side close to the discharge pipe 13. The extension of the four hydraulic cylinders 32 can drive the lifting plate 31 to tilt through the transmission of the corresponding connecting plate 33, so that the cylinder 1 will tilt. At this time, the mouth of the discharge pipe 13 tilts downward, so that the internal steel ball will move accordingly and begin to move toward the power transmission component 4.

[0033] In addition, if Figure 2-Figure 4As shown, the power transmission assembly 4 includes a flexible isolation plate 41, which is disposed within the cylinder 1 and adjacent to the discharge pipe 13. Several filter holes 42 are formed in the flexible isolation plate 41. During use, when the cylinder 1 tilts, the steel balls collide with the flexible isolation plate 41, causing deformation and displacement of the flexible isolation plate 41, thereby driving the cleaning assembly 6 to move. The filter holes 42 facilitate the passage of pulverized coal from the cylinder 1, allowing it to be discharged. They also serve to block the steel balls, preventing them from being discharged from the discharge pipe 13 along with the pulverized coal.

[0034] Furthermore, if Figure 2-Figure 6 As shown, the cleaning assembly 6 includes a mounting frame 61, which is a hollow structure and fixedly connected to the discharge pipe 13. A spring 62 is fixedly connected between the discharge pipe 13 and the flexible isolation plate 41. A first mounting seat 63 is fixedly connected to the spring 62. A first rotating seat 64 is rotatably connected to the first mounting seat 63. A plurality of first flexible scrapers 67 are arranged in a circular array on the first rotating seat 64, which engage the inner wall of the cylinder 1. The mounting frame 61 mainly serves as a mounting and supporting mechanism. The hollow structure of the mounting frame 61 can reduce the impact on the flow of pulverized coal. The spring 62 mainly provides support and reset functions.

[0035] During use, the flexible isolation plate 41 is deformed toward the side of the discharge pipe 13 by the action of the steel ball. At this time, the spring 62 is compressed. The movement of the spring 62 drives the first mounting seat 63 to move toward the discharge pipe 13. The first mounting seat 63 can drive the first flexible scraper 67 to move toward the discharge pipe 13 through the transmission of the first rotating seat 64, thereby cleaning the inner wall of the cylinder 1. It should be noted that in order to repeatedly clean the inner wall of the cylinder 1, the inclination of the cylinder 1 can be repeatedly adjusted. Specifically, when the spring 62 is compressed to the shortest point, the position of the cylinder 1 at the discharge pipe 13 is raised. At this time, the steel ball inside the cylinder 1 has a tendency to move toward the feed pipe 12, so that the spring 62 has a tendency to reset. When the pressure of the steel ball on the flexible isolation plate 41 gradually decreases, the flexible isolation plate 41 and the spring 62 begin to reset. At this time, the first flexible scraper 67 begins to move toward the feed pipe 12. In this way, one cycle can be achieved, and then the discharge pipe 13 can be lowered again, and the steel ball will squeeze the flexible isolation plate 41 again, so that the reciprocating motion of the first flexible scraper 67 can be achieved, and the coal powder attached to the inner wall of the cylinder 1 can be better cleaned.

[0036] In addition, the first mounting base 63 and the first rotating base 64 are connected in a rotating manner, which allows the first flexible scraper 67 to rotate during the cleaning process, thereby increasing the cleaning area of ​​the first flexible scraper 67. Moreover, the flexible setting of the first flexible scraper 67 allows the first flexible scraper 67 to always contact the inner wall of the cylinder 1 during movement.

[0037] As an optional embodiment, a chamfer may be provided on the first flexible scraper 67 , so as to facilitate cleaning of the coal powder adhering to the inner wall of the cylinder 1 .

[0038] It should be noted that, when unloading the pulverized coal inside the cylinder 1 , in order to prevent the steel balls from clogging the filter holes 42 , the height of the discharge pipe 13 may be repeatedly adjusted.

[0039] In addition, if Figure 2 and Figure 3 As shown, a second mounting seat 65 is fixedly connected to the spring 62. The second mounting seat 65 is located between the discharge pipe 13 and the first mounting seat 63. A second rotating seat 66 is rotatably connected to the second mounting seat 65. The second rotating seat 66 has a plurality of second flexible scrapers 68 arranged in a circular array on the second rotating seat 66, which engage the inner wall of the cylinder 1. During use, when the spring 62 is extended and retracted, the spring 62 also drives the second mounting seat 65 to move. The movement of the second mounting seat 65, through the transmission of the second rotating seat 66, drives the second flexible scrapers 68 to move, thereby cleaning the inner wall of the cylinder 1. Placing the second mounting seat 65 between the discharge pipe 13 and the first mounting seat 63, that is, the second flexible scraper 68 is closer to the discharge pipe 13, thereby facilitating the cleaning of coal dust at the discharge pipe 13.

[0040] Similarly, the second mounting base 65 and the second rotating base 66 are connected in a rotating manner, which allows the second flexible scraper 68 to rotate during the cleaning process, thereby increasing the cleaning area of ​​the second flexible scraper 68. Moreover, the flexible setting of the second flexible scraper 68 allows the second flexible scraper 68 to always contact the inner wall of the cylinder 1 during movement.

[0041] As an optional embodiment, a chamfer may be provided on the second flexible scraper 68 , so as to facilitate cleaning of the coal powder adhering to the inner wall of the cylinder 1 .

[0042] It should be noted that the flexibility of the first and second flexible scraper plates 67, 68 means that they have a certain degree of rigidity and strength, but will deform to a certain extent when subjected to force, but will return to their original shape when the pressure is released. For example, the first and second flexible scraper plates 67, 68 can both be made of shape memory alloy materials.

[0043] As an optional embodiment, the second flexible scraper 68 has an arcuate structure, and the opening of the second flexible scraper 68 is oriented toward the discharge pipe 13. The arcuate structure allows for better alignment with the inclined inner wall of the cylinder 1 and facilitates deformation of the second flexible scraper 68. The opening of the second flexible scraper 68 is oriented toward the discharge pipe 13. This allows the second flexible scraper 68 to push coal dust that has fallen to the bottom of the cylinder 1 toward the discharge pipe 13 while cleaning the inner wall of the cylinder 1, facilitating unloading of the cleaned coal dust.

[0044] As an optional embodiment, a foldable dustproof tube 69 is fixedly connected between the mounting frame 61 and the second mounting seat 65, a foldable dustproof tube 69 is fixedly connected between the second mounting seat 65 and the first mounting seat 63, and a foldable dustproof tube 69 is fixedly connected between the first mounting seat 63 and the flexible isolation plate 41. Among them, the dustproof tube 69 mainly plays a dustproof role. Fixing the dustproof tube 69 between the mounting frame 61 and the second mounting seat 65, between the second mounting seat 65 and the first mounting seat 63, and between the first mounting seat 63 and the flexible isolation plate 41 can prevent coal powder from entering the interior of the spring 62, thereby affecting the normal use of the spring 62. In addition, the foldable structure design of the dustproof tube 69 can make the dustproof tube 69 adapt to the expansion and contraction of the spring 62, making it more flexible and convenient to use.

[0045] In addition, if Figure 1 As shown, the driving assembly 5 includes: a driving base 51 fixedly connected to the lifting plate 31, a motor 52 and a reducer 53 fixedly connected to the driving base 51, the output end of the motor 52 cooperates with the reducer 53, two gear seats 56 are fixedly connected to the base 2, a transition gear 54 is rotatably connected between the two gear seats 56, the gear shaft of the transition gear 54 cooperates with the reducer 53, and a driving gear 55 is fixedly connected to the outer wall of the cylinder 1, and the driving gear 55 cooperates with the transition gear 54.

[0046] The driving assembly 5 mainly plays a driving role. When in use, the motor 52 is started, and the motor 52 drives the driving gear 55 to rotate through the transmission of the speed reducer 53 and the transition gear 54. The rotation of the driving gear 55 can then drive the cylinder 1 to rotate, thereby achieving the crushing of the coal mine.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An efficient and clean preparation device for pulverized coal, characterized by: include: Base (2); A barrel (1), the barrel (1) comprising: a feed pipe (12) and a discharge pipe (13), wherein the feed pipe (12) and the discharge pipe (13) are both rotatably connected to a bearing seat (11); A lifting and unloading assembly (3), the lifting and unloading assembly (3) being arranged on the base (2), and the lifting and unloading assembly (3) being fixedly connected to the bearing seat (11), and being used for adjusting the inclination of the cylinder (1); A cleaning assembly (6), wherein the cleaning assembly (6) is arranged inside the cylinder (1), and the cleaning assembly (6) is close to one end of the nozzle of the discharge pipe (13) to clean the inner wall of the cylinder (1), and the cleaning assembly (6) comprises: a mounting frame (61), the mounting frame (61) is a hollow structure, and the mounting frame (61) is fixedly connected to the discharge pipe (13), a spring (62) is fixedly connected between the mounting frame (61) and the flexible isolation plate (41), and a first mounting seat (63) is fixedly connected to the spring (62), and the first mounting frame (63) is fixedly connected to the first mounting frame (61). A first rotating seat (64) is rotatably connected to the mounting seat (63), and a plurality of first flexible scrapers (67) are arranged in an annular array on the first rotating seat (64) and cooperate with the inner wall of the cylinder (1). A second mounting seat (65) is fixedly connected to the spring (62), and the second mounting seat (65) is located between the discharge pipe (13) and the first mounting seat (63). A second rotating seat (66) is rotatably connected to the second mounting seat (65), and a plurality of second flexible scrapers (68) are arranged in an annular array on the second rotating seat (66) and cooperate with the inner wall of the cylinder (1). A power transmission assembly (4), wherein the power transmission assembly (4) is arranged inside the cylinder (1), and the power transmission assembly (4) is close to one side of the discharge pipe (13) to isolate the steel balls and transfer the kinetic energy of the steel balls to the cleaning assembly (6), and the power transmission assembly (4) includes: a flexible isolation plate (41), wherein the flexible isolation plate (41) is arranged inside the cylinder (1) and close to one side of the discharge pipe (13), and a plurality of filter holes (42) are opened on the flexible isolation plate (41).

2. The device for efficiently and cleanly preparing pulverized coal according to claim 1, characterized in that: The lifting and unloading assembly (3) comprises: a lifting plate (31) fixed on the bearing seat (11); a plurality of hydraulic cylinders (32) are arranged between the lifting plate (31) and the base (2); the plurality of hydraulic cylinders (32) are respectively arranged near the feed pipe (12) and the discharge pipe (13); a plurality of connecting plates (33) are arranged on the side of the lifting plate (31) facing the base (2); the telescopic ends of the plurality of hydraulic cylinders (32) are respectively rotatably connected to the plurality of connecting plates (33); and the fixed ends of the plurality of hydraulic cylinders (32) are fixedly connected to the base (2).

3. The device for efficiently and cleanly preparing pulverized coal according to claim 2, characterized in that: A foldable dustproof tube (69) is fixedly connected between the mounting frame (61) and the second mounting seat (65), a foldable dustproof tube (69) is fixedly connected between the second mounting seat (65) and the first mounting seat (63), and a foldable dustproof tube (69) is fixedly connected between the first mounting seat (63) and the flexible isolation plate (41).

4. The device for efficiently and cleanly preparing pulverized coal according to claim 3, characterized in that: Also includes: A drive assembly (5) comprises: a drive base (51) fixedly connected to the lifting plate (31); a motor (52) and a reducer (53) fixedly connected to the drive base (51); an output end of the motor (52) cooperates with the reducer (53); two gear seats (56) fixedly connected to the base (2); a transition gear (54) rotatably connected between the two gear seats (56); a gear shaft of the transition gear (54) cooperates with the reducer (53); a drive gear (55) fixedly connected to the outer wall of the cylinder (1); the drive gear (55) cooperates with the transition gear (54).

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