A coal mill structure suitable for blending kaolin

Abstract

The application discloses a coal mill structure suitable for mixing kaolin, and relates to the technical field of coal milling equipment.The coal mill structure comprises a machine body, the outer surface of the machine body is provided with a gearbox, the top central position of the machine body is fixedly connected with a feeding hopper, the bottom central position of the machine body is provided with a discharge port, the outer surface of a driving roller is fixedly connected with an eccentric grinding part, the outer surface of the eccentric grinding part is fixedly connected with a grinding layer on the side away from the driving roller, the inside of the driving roller is provided with an auxiliary module, the inner surface of the driving roller is provided with a gas injection hole at the position close to the eccentric grinding part, the outer surface of a supporting guide rod is slidably connected with a sliding ring, the outer surface top of the sliding ring is fixedly connected with a counterweight protrusion, and the bottom edge of the sliding ring is fixedly connected with an annular extension edge.The coal mill structure suitable for mixing kaolin can uniformly mill coal, pre-treats coal blocks, reduces the attachment of powder on the surface of the grinding roller, and makes the grinding material fast and uniform.

Description

Technical Field

[0001] This invention relates to the field of coal grinding equipment technology, specifically to a coal mill structure suitable for blending kaolin. Background Technology

[0002] With the continuous development of science and technology and the constant progress of society, the use of coal is increasing. A coal mill is a machine that crushes and grinds coal into pulverized coal; it is an important auxiliary equipment for pulverized coal boilers. The coal grinding process mainly involves three methods: crushing, impact crushing, and grinding. Power plants, metallurgy, and other industries widely use coal mills as pre-processing equipment for their coal fuels. Therefore, coal mills are widely used. Existing coal mills, based on different working principles, mainly include ball mills, roller mills, and fan mills.

[0003] Currently, during the grinding process, coal mills do not produce uniformly ground powder, which easily leads to the inclusion of particulate matter. Furthermore, the powder adheres to the surface of the grinding rollers. Under the pressure of compression and over a long period of operation, the powder adhering to the surface of the grinding rollers forms a cake-like structure, which is detrimental to the grinding of coal. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a coal mill structure suitable for blending kaolin, comprising:

[0005] The machine body has a gearbox mounted on its outer surface, and a servo motor is fixedly connected to the outer surface of the gearbox on the side away from the machine body. A feed hopper is fixedly connected to the center of the top of the machine body, and a discharge port is opened at the center of the bottom of the machine body.

[0006] Also includes:

[0007] The abrasive assembly includes a drive roller rotatably connected inside the machine body near its center. An eccentric grinding element is fixedly connected to the outer surface of the drive roller, and a grinding layer is fixedly connected to the outer surface of the eccentric grinding element on the side furthest from the drive roller. An auxiliary module is located inside the drive roller. An air jet is formed on the inner surface of the drive roller near the eccentric grinding element, and a dust filter is fixedly connected to the outlet end of the air jet near the outer surface of the eccentric grinding element. A magnetic rod is fixedly connected to the interior of the eccentric grinding element near its end. When kaolin is added... After the large coal lumps are processed by the pretreatment component, the crushed granular material falls downwards. At this time, the drive drum is rotated by the gearbox, which causes the eccentric grinding piece to rotate in a circle. The rotating eccentric grinding piece applies grinding pressure to the granular material and comes into contact with the granular material through the grinding layer. Under the rotation, the granular material is ground and uniformly ground as it continues to rotate. At the same time, when the eccentric grinding piece rotates to the top, it contacts the bottom of the vibration module on the pretreatment component, thereby applying an upward top pressure to the vibration module.

[0008] The auxiliary module has a support guide rod fixed to the inner surface of the drive roller, and a sliding ring is slidably connected to the outer surface of the support guide rod. A counterweight protrusion is fixedly connected to the top of the outer surface of the sliding ring, and an annular extension edge is fixedly connected to the bottom edge of the sliding ring. The support guide rod can support the inside of the drive roller. In addition, the support guide rod is evenly distributed inside the drive roller, so that the support guide rod acts as a reinforcing rib, thereby improving the strength of the drive roller itself, making it less prone to deformation, and extending its service life.

[0009] Meanwhile, as the drive roller rotates continuously, the sliding ring, supported by the guide rod, is driven to rotate upwards. The counterweight protrusion increases its weight, causing the sliding ring to drive the annular extension edge to slide downwards along the guide rod. The annular extension edge is made of rubber, which is flexible and allows it to contact the bottom of the inner surface of the drive roller. Under the pressure of the sliding ring and the counterweight protrusion, the annular extension edge deforms, blowing air into the air jet hole. The airflow then blows from the outlet of the air jet hole towards the outer surface of the eccentric grinding part, thus blowing away the powder adhering to the outer surface of the eccentric grinding part, reducing powder adhesion, and making the powder less likely to be compressed into a cake.

[0010] Preferably, the outer surface end of the drive roller penetrates the inner surface of the machine body and extends into the interior of the gearbox. The output end of the servo motor is connected to the outer surface end of the drive roller via the gearbox. The eccentric grinding element and the eccentric grinding element are integrated. The air jet holes are evenly distributed on the inner surface of the drive roller.

[0011] Preferably, the support guide rods are evenly distributed inside the drive roller, and the support guide rods pass through the center of the sliding ring and the annular extension edge. A sliding hole adapted to the support guide rod is opened at the center position of the outer surface of the sliding ring.

[0012] Preferably, a pretreatment component is provided inside the machine body, located directly below the feed hopper. The pretreatment component includes a crushing roller and a butterfly-shaped receiving frame. The outer surface end of the crushing roller is rotatably connected to the inner surface of the machine body. The outer surface edge of the butterfly-shaped receiving frame is fixedly connected to the inner surface of the machine body by screws. The outer surface end of the crushing roller penetrates the inner surface of the machine body and extends into the interior of the gearbox. The output end of the servo motor is connected to the outer surface end of the crushing roller via the gearbox. Crushing teeth are fixedly connected to the outer surface of the crushing roller. A material leakage area is provided at the bottom of the butterfly-shaped receiving frame. A vibration module is installed at the bottom center of the butterfly-shaped receiving frame. When the crushing roller is driven to rotate by the servo motor through the gearbox, the crushing teeth rotate together with the crushing roller. The rotating crushing teeth can then be used to initially crush large pieces of coal falling from the bottom of the feed hopper, and the crushed material falls to the bottom of the butterfly-shaped receiving frame. Small particles fall through the leakage square hole, while medium particles remain in the butterfly-shaped receiving frame and are crushed again by the continuously rotating crushing teeth until they are crushed into small particles and leak out through the leakage square hole. This pre-treatment of large pieces of coal facilitates subsequent coal grinding.

[0013] Preferably, there are two crushing rollers, and the two crushing rollers are symmetrically arranged along the central position of the butterfly-shaped receiving frame, and the crushing teeth are evenly distributed on the outer surface of the crushing rollers.

[0014] Preferably, the bottom of the inner surface of the butterfly-shaped receiving frame is arc-shaped, and the leakage square holes are evenly distributed on the bottom of the inner surface of the butterfly-shaped receiving frame.

[0015] Preferably, the vibration module includes a strip-shaped housing, the top of which is fixedly connected to the bottom of a butterfly-shaped receiving frame. A pushing rod is slidably connected to the bottom of the strip-shaped housing, a pushing member is fixedly connected to the bottom end of the pushing rod, and an impact rod is fixedly connected to the top end of the pushing rod. An elastic reset member is fixedly connected to the outer surface of the impact rod. When the drive roller rotates the eccentric grinding part and rotates it to near the top, the bottom of the pushing member contacts the outer surface of the eccentric grinding part. As the eccentric grinding part continues to rotate, the pushing member is subjected to an upward pushing force. The force is applied, and the sliding mechanism of the jacking rod lifts the impact bar, stretching the elastic reset component. The lifted impact bar then strikes the center of the bottom of the butterfly-shaped receiving frame, causing it to vibrate slightly. This facilitates the leakage of small particles from the discharge hole, reducing the risk of jamming. As the eccentric grinding component continues to rotate, it separates from the pushing component. The upward pressure on the pushing component disappears, and the elastic tension of the elastic reset component causes the jacking rod to move the impact bar downward, facilitating subsequent reciprocating jacking and achieving intermittent impact.

[0016] Preferably, the bottom end of the elastic reset member is fixedly connected to the inner surface of the strip-shaped housing, the bottom of the strip-shaped housing is provided with a sliding hole adapted to the push rod, and the bottom of the push member is set as an arc-shaped surface.

[0017] Preferably, a screening assembly is provided inside the machine body and near the drive roller. The screening assembly includes a frame, the top of the outer surface of the frame is fixedly connected to the inner surface of the machine body, a screen is fixedly connected to the bottom of the inner surface of the frame, a support spring is fixedly connected to the outer surface of the frame, a strong magnetic ball is fixedly connected to the outer end of the support spring, a push rod is hinged to the bottom of the strong magnetic ball, and a cleaning scraper is hinged to the bottom of the push rod. Small particles of material fall into the screen and are abraded by a circumferentially rotating eccentric grinding element. At this time, the abraded material passes through the screen, and the magnetic rod and the strong magnetic ball are set as the same magnetic poles. Then, when the magnetic rod is driven to rotate by the eccentric grinding element, the abraded material passes through the screen and the magnetic rod and the strong magnetic ball are set as the same magnetic poles. When the magnetic rod approaches the strong magnetic ball, a repulsive magnetic force is generated between them. This force pushes the strong magnetic ball downwards, and the supporting spring is stretched. The downward-moving strong magnetic ball then pushes the connecting rod, causing the cleaning scraper to move downwards as well. The bottom of the cleaning scraper then comes into contact with the bottom of the inner surface of the machine body, scraping away the powder material that has fallen to the bottom of the inner surface, thus facilitating the discharge of the powder material. As the magnetic rod continues to rotate and moves away from the strong magnetic ball, the repulsive magnetic force disappears. Under the elastic tension of the supporting spring, the strong magnetic ball moves upwards to its original position, pushing the connecting rod to move the cleaning scraper upwards, thus facilitating subsequent reciprocating cleaning of the powder material.

[0018] Preferably, the screen is arc-shaped and positioned directly below the drive roller, with the bottom of the cleaning scraper adhering to the bottom of the inner surface of the machine body.

[0019] This invention provides a coal mill structure suitable for blending kaolin. It has the following beneficial effects:

[0020] I. This structure is applicable to coal mills with kaolin blends. After the large lumps of coal with kaolin blends are processed by the pretreatment components, the crushed granular material falls downwards. At this time, the drive drum is driven by the gearbox to rotate, causing the eccentric grinding parts to rotate in a circular motion. The rotating eccentric grinding parts apply grinding pressure to the granular material and come into contact with the granular material through the grinding layer. Under rotation, the granular material is ground, and with continuous rotation, the granular material is uniformly ground.

[0021] II. This structure, applicable to coal mills with kaolin blends, utilizes support guide rods to reinforce the interior of the drive drum, thereby increasing the strength of the drive drum itself and preventing deformation. Simultaneously, as the drive drum rotates continuously, the sliding ring drives the annular extension edge to slide downwards along the support guide rods. The annular extension edge, with its good flexibility, deforms under the pressure of the sliding ring and the counterweight protrusion, blowing air into the jet nozzle. The airflow then exits from the jet nozzle's outlet towards the outer surface of the eccentric grinding piece, blowing away powder adhering to the outer surface of the eccentric grinding piece, reducing powder adhesion, and preventing the powder from being compressed into cakes.

[0022] 3. This structure is applicable to coal mills with kaolin. As the drive drum rotates continuously, when the eccentric grinding parts rotate close to the top, the sliding ring drives the counterweight protrusion to slide down along the support guide rod again. At this time, the end of the counterweight protrusion contacts the inner surface of the drive drum, causing the drive drum to be impacted. The drive drum vibrates, which promotes the shedding of powder raw materials adhering to the surface of the drive drum and the eccentric grinding parts.

[0023] IV. This coal mill structure, suitable for blending kaolin, is driven by a servo motor. The crushing roller drives the crushing teeth to rotate, thereby using the rotating crushing teeth to initially crush large pieces of coal falling from the bottom of the feed hopper. The crushed material falls to the bottom of the butterfly receiving frame, while small particles fall through the leakage square hole. Medium particles remain in the butterfly receiving frame and are crushed again by the continuously rotating crushing teeth until they are broken into small particles and leak out through the leakage square hole. This pre-treatment of large pieces of coal facilitates subsequent coal grinding.

[0024] V. This structure is applicable to coal mills with kaolin blending. When the eccentric grinding part rotates to near the top, it contacts the bottom of the pusher. As the eccentric grinding part continues to rotate, the pusher is subjected to an upward pushing force, which in turn lifts the impact bar and impacts the bottom center of the butterfly receiving frame. This causes the butterfly receiving frame to vibrate slightly, facilitating the leakage of small particles from the discharge hole and preventing material jamming. When the eccentric grinding part continues to rotate and separates from the pusher, the upward pushing force on the pusher disappears. Under the elastic tension of the elastic reset part, the pusher rod moves the impact bar downward, facilitating subsequent reciprocating pushing and achieving intermittent impact.

[0025] VI. This structure is suitable for coal mills with kaolin. Small particles of material fall into the screen and are ground by the eccentric grinding parts that rotate in a circular motion. As the material passes through the screen, the magnetic rod is rotated by the eccentric grinding parts. The magnetic rod and the strong magnetic ball generate a repulsive magnetic force, which pushes the strong magnetic ball downward. The downward-moving strong magnetic ball then drives the cleaning scraper downward through the connecting rod. The cleaning scraper then removes the powder material that has fallen to the bottom of the inner surface of the machine body, making it easier to discharge the powder material. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a coal mill with kaolin added according to the present invention;

[0027] Figure 2 This is a schematic diagram of the cross-sectional structure of a coal mill with kaolin added according to the present invention;

[0028] Figure 3 This is a schematic diagram of the overall structure of the abrasive assembly of the present invention;

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the abrasive assembly of the present invention;

[0030] Figure 5 This is a schematic diagram of the overall structure of the auxiliary module of the present invention;

[0031] Figure 6 This is a schematic diagram of the overall structure of the pretreatment component of the present invention;

[0032] Figure 7 This is a schematic diagram of the cross-sectional structure of the vibration module of the present invention;

[0033] Figure 8 This is a schematic diagram of the overall structure of the vibration module of the present invention;

[0034] Figure 9 This is a schematic diagram of the overall structure of the screening component of the present invention.

[0035] In the diagram: 1. Machine body; 2. Gearbox; 3. Servo motor; 4. Feed hopper; 5. Discharge port; 6. Abrasive assembly; 7. Pre-treatment assembly; 8. Screening assembly; 61. Drive roller; 62. Eccentric grinding component; 63. Grinding layer; 64. Auxiliary module; 65. Air jet; 66. Dust filter cotton; 67. Magnetic rod; 641. Support guide rod; 642. Sliding ring; 643. Counterweight protrusion; 644. Annular extension edge; 71. Crushing roller; 72. Butterfly-shaped receiving frame; 73. Crushing teeth; 74. Leakage square hole; 75. Vibration module; 751. Strip-shaped shell; 752. Pushing rod; 753. Pushing component; 754. Impact rod; 755. Elastic reset component; 81. Frame; 82. Screen; 83. Support tension spring; 84. Strong magnetic ball; 85. Pushing connecting rod; 86. Cleaning scraper. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0037] First embodiment, such as Figures 1-5 As shown, the present invention provides a technical solution: a coal mill structure suitable for blending kaolin, comprising:

[0038] The machine body 1 has a gearbox 2 installed on its outer surface. A servo motor 3 is fixedly connected to the outer surface of the gearbox 2 on the side away from the machine body 1. The servo motor 3 can be used as a power source. A feeding hopper 4 is fixedly connected to the center of the top of the machine body 1. The feeding hopper 4 facilitates the feeding of raw materials. An outlet 5 is opened at the center of the bottom of the machine body 1. The outlet 5 facilitates the discharge of powder materials.

[0039] Also includes:

[0040] The abrasive assembly 6 includes a drive roller 61 rotatably connected inside the body 1 and located near the center. An eccentric grinding element 62 is fixedly connected to the outer surface of the drive roller 61, and a grinding layer 63 is fixedly connected to the outer surface of the eccentric grinding element 62 on the side away from the drive roller 61. An auxiliary module 64 is installed inside the drive roller 61. An air jet hole 65 is opened on the inner surface of the drive roller 61 near the eccentric grinding element 62. A dust filter cotton 66 is fixedly connected to the outlet end of the air jet hole 65 near the outer surface of the eccentric grinding element 62. The dust filter cotton 66 filters the powder material, reducing the amount of powder material entering the air jet hole 65. A magnetic rod is fixedly connected to the interior of the eccentric grinding element 62 near its end. 67. After the kaolin-blended large coal pieces are processed by the pretreatment component 7, the crushed granular material falls downwards. At this time, the drive roller 61 is driven by the gearbox 2 to rotate, causing the eccentric grinding piece 62 to rotate in a circle. The rotating eccentric grinding piece 62 applies grinding pressure to the granular material and contacts the granular material through the grinding layer 63. Under rotation, the granular material is ground, and with continuous rotation, the granular material is ground evenly. At the same time, when the eccentric grinding piece 62 rotates to the top, it contacts the bottom of the vibration module 75 on the pretreatment component 7, thereby applying an upward top pressure to the vibration module 75. The interaction between the structures connects the structures together.

[0041] The auxiliary module 64 has a support guide rod 641 fixed to the inner surface of the drive roller 61, and a sliding ring 642 slidably connected to the outer surface of the support guide rod 641. A counterweight protrusion 643 is fixedly connected to the top of the outer surface of the sliding ring 642, and an annular extension edge 644 is fixedly connected to the bottom edge of the sliding ring 642. The support guide rod 641 provides support to the interior of the drive roller 61. Furthermore, the even distribution of the support guide rod 641 within the drive roller 61 acts as a reinforcing rib, thereby improving the strength of the drive roller 61, reducing deformation, and extending its service life. Simultaneously, when the drive roller 61 rotates continuously, the sliding ring 642 will support the support guide rod 641. Supported by 41, it is driven to rotate upward, and the counterweight protrusion 643 increases its own weight, causing the sliding ring 642 to drive the annular extension edge 644 to slide downward along the support guide rod 641. The material of the annular extension edge 644 is made of rubber, which has good flexibility. The annular extension edge 644 can contact the bottom of the inner surface of the drive roller 61. Under the pressure of the sliding ring 642 and the counterweight protrusion 643, the annular extension edge 644 is deformed, which blows air into the jet hole 65. The airflow blows from the outlet of the jet hole 65 to the outer surface of the eccentric grinding part 62, thereby blowing away the powder adhering to the outer surface of the eccentric grinding part 62, reducing the adhesion of the powder material, and making the powder material less likely to be squeezed into a cake.

[0042] The outer surface end of the drive roller 61 penetrates the inner surface of the machine body 1 and extends into the interior of the gearbox 2. The output end of the servo motor 3 is connected to the outer surface end of the drive roller 61 through the gearbox 2, which facilitates the drive roller 61 to rotate. The eccentric grinding part 62 is set as an integral piece. The air jet holes 65 are evenly distributed on the inner surface of the drive roller 61. Air jets can be sprayed through multiple air jet holes 65 together, thereby blowing the powder material attached to the surface of the eccentric grinding part 62.

[0043] The support guide rods 641 are evenly distributed inside the drive roller 61 to facilitate the support of the inside of the drive roller 61. The support guide rods 641 pass through the center of the sliding ring 642 and the annular extension edge 644. The outer surface of the sliding ring 642 has a sliding hole at the center position that matches the support guide rods 641 to facilitate the sliding of the sliding ring 642.

[0044] Second embodiment, such as Figures 1-8 As shown, based on the first embodiment:

[0045] The machine body 1 is equipped with a pretreatment component 7, which is located directly below the feed hopper 4. The pretreatment component 7 includes a crushing roller 71 and a butterfly receiving frame 72. The outer surface end of the crushing roller 71 is rotatably connected to the inner surface of the machine body 1. The outer surface edge of the butterfly receiving frame 72 is fixedly connected to the inner surface of the machine body 1 by screws. The outer surface end of the crushing roller 71 penetrates the inner surface of the machine body 1 and extends into the interior of the gearbox 2. The output end of the servo motor 3 is connected to the outer surface end of the crushing roller 71 through the gearbox 2. Crushing teeth 73 are fixedly connected to the outer surface of the crushing roller 71. A square hole 74 for material leakage is opened at the bottom of the butterfly receiving frame 72. A vibration module 75 is installed at the bottom center of the 72. When the crushing roller 71 is driven to rotate by the servo motor 3 through the gearbox 2, the crushing teeth 73 rotate together with the crushing roller 71. The rotating crushing teeth 73 can then be used to initially crush large pieces of coal falling from the bottom of the feed hopper 4, and the crushed material falls to the bottom of the butterfly receiving frame 72. Small particles fall through the leakage square hole 74, while medium particles remain in the butterfly receiving frame 72 and are crushed again by the continuously rotating crushing teeth 73 until they are crushed into small particles and leak out through the leakage square hole 74. This pre-processing of large pieces of coal facilitates subsequent coal grinding.

[0046] There are two crushing rollers 71, and the two crushing rollers 71 are symmetrically arranged along the central position of the butterfly receiving frame 72. The two crushing rollers 71 rotate in opposite directions, and the crushing teeth 73 are evenly distributed on the outer surface of the crushing rollers 71, which facilitates the crushing of large pieces of coal.

[0047] The bottom of the inner surface of the butterfly receiving frame 72 is set to be arc-shaped, which makes it easy for the crushed coal particles to roll downwards. The leakage square holes 74 are evenly distributed on the bottom of the inner surface of the butterfly receiving frame 72, which makes it easy for the crushed coal particles to leak down from the leakage square holes 74.

[0048] The vibration module 75 includes a strip-shaped housing 751. The top of the strip-shaped housing 751 is fixedly connected to the bottom of the butterfly-shaped receiving frame 72. A push rod 752 is slidably connected to the bottom of the strip-shaped housing 751. A pusher 753 is fixedly connected to the bottom end of the push rod 752. An impact rod 754 is fixedly connected to the top end of the push rod 752. An elastic reset member 755 is fixedly connected to the outer surface of the impact rod 754. When the drive roller 61 drives the eccentric grinding part 62 to rotate and rotates the eccentric grinding part 62 to near the top, the bottom of the pusher 753 contacts the outer surface of the eccentric grinding part 62. As the eccentric grinding part 62 continues to rotate, the pusher 753 is subjected to an upward pushing force. The jacking rod 752 can slide, causing the impact rod 754 to be lifted and the elastic reset member 755 to be stretched. At this time, the lifted impact rod 754 impacts the bottom center of the butterfly receiving frame 72, causing the butterfly receiving frame 72 to vibrate slightly, which facilitates the leakage of small particles from the leakage square hole 74 and reduces the risk of material jamming. When the eccentric grinding part 62 continues to rotate, it separates from the pusher 753. At this time, the upward pressure on the pusher 753 disappears, and under the elastic tension of the elastic reset member 755, the jacking rod 752 drives the impact rod 754 to move downward, which facilitates subsequent reciprocating jacking and thus achieves intermittent impact.

[0049] The bottom end of the elastic reset member 755 is fixedly connected to the inner surface of the strip housing 751, so that the elastic reset member 755 can be stretched when the impact rod 754 moves upward. The bottom of the strip housing 751 is provided with a sliding hole that matches the push rod 752, so that the push rod 752 can slide. The bottom of the push member 753 is set as an arc surface.

[0050] The third embodiment, such as Figures 1-5 and Figure 9 As shown, based on the first embodiment:

[0051] A screening assembly 8 is located inside the machine body 1 and near the drive roller 61. The screening assembly 8 includes a frame 81. The top of the outer surface of the frame 81 is fixedly connected to the inner surface of the machine body 1. A screen 82 is fixedly connected to the bottom of the inner surface of the frame 81. A support spring 83 is fixedly connected to the outer surface of the frame 81. A strong magnetic ball 84 is fixedly connected to the end of the outer surface of the support spring 83. A push rod 85 is hinged to the bottom of the strong magnetic ball 84. A cleaning scraper 86 is hinged to the bottom of the push rod 85. Small particles of material fall into the screen 82 and are ground by the eccentric grinding element 62. At this time, the ground material passes through the screen 82, and the magnetic rod 67 and the strong magnetic ball 84 are set as the same magnetic poles. Then, when the magnetic rod 67 is driven to rotate by the eccentric grinding element 62, the magnetic rod 67 moves closer to the strong magnetic ball 84. When the magnetic ball 84 is in motion, the magnetic rod 67 and the strong magnetic ball 84 generate a repulsive magnetic force, which pushes the strong magnetic ball 84 downward. The support spring 83 is stretched, and the downward-moving strong magnetic ball 84 drives the cleaning scraper 86 to move downward through the connecting rod 85. The bottom of the cleaning scraper 86 then comes into contact with the bottom of the inner surface of the machine body 1, and the cleaning scraper 86 scrapes away the powder material that has fallen to the bottom of the inner surface of the machine body 1, thus facilitating the discharge of the powder material. When the magnetic rod 67 continues to rotate and moves away from the strong magnetic ball 84, the repulsive magnetic force disappears, and under the elastic tension of the support spring 83, the strong magnetic ball 84 moves upward and resets. This pushes the connecting rod 85 to drive the cleaning scraper 86 upward, thus facilitating the subsequent reciprocating cleaning of the powder material.

[0052] When the magnetic rod 67 is moved away from the strong magnetic ball 84, the repulsive magnetic force on the strong magnetic ball 84 disappears. At this time, under the elastic tension of the support spring 83, the strong magnetic ball 84 is pulled upward. The outer surface of the strong magnetic ball 84 then contacts the bottom of the screen 82, causing the screen 82 to vibrate due to the impact of the strong magnetic ball 84. This promotes the filtration of powder materials by the screen 82, reduces the amount of powder material adhering to the screen 82, and makes full use of the repulsive magnetic force to achieve multiple functions through different states.

[0053] The screen 82 is set in an arc shape and is located directly below the drive roller 61. The bottom of the cleaning scraper 86 is attached to the bottom of the inner surface of the machine body 1, which facilitates the scraping and discharge of powder materials that fall to the bottom of the inner surface of the machine body 1.

[0054] In use, the servo motor 3 is used as the power source, and the drive roller 61 and crushing roller 71 are driven to rotate under the transmission of the gearbox 2. At this time, kaolin is mixed into the coal, and the raw material is poured into the machine body 1 from the feed hopper 4. The raw material first passes through the pretreatment component 7 to crush the large pieces of coal into granular raw materials, and then the large pieces of coal are pretreated. At this time, the crushed granular coal falls into the screen 82, and the eccentric grinding part 62 is driven to rotate circumferentially by the rotating drive roller 61, thereby grinding the granular coal in the screen 82. At this time, the coal powder ground into powder passes through the screen 82 and is discharged from the discharge port 5, thus realizing the grinding of coal.

[0055] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A coal mill structure suitable for blending kaolin, comprising: The machine body (1) has a gearbox (2) installed on its outer surface, and a servo motor (3) is fixedly connected to the outer surface of the gearbox (2) on the side away from the machine body (1). A feed hopper (4) is fixedly connected to the top center of the machine body (1), and a discharge port (5) is opened at the bottom center of the machine body (1). Its characteristic is that it further includes: Abrasive assembly (6) has a drive roller (61) rotatably connected inside the body (1) and near the center. An eccentric grinding part (62) is fixedly connected to the outer surface of the drive roller (61). A grinding layer (63) is fixedly connected to the outer surface of the eccentric grinding part (62) on the side away from the drive roller (61). An auxiliary module (64) is provided inside the drive roller (61). An air jet hole (65) is opened on the inner surface of the drive roller (61) near the eccentric grinding part (62). A dust filter cotton (66) is fixedly connected to the air outlet end of the air jet hole (65) near the outer surface of the eccentric grinding part (62). A magnetic rod (67) is fixedly connected to the inside of the eccentric grinding part (62) near the end. The auxiliary module (64) has a support guide rod (641) fixed on the inner surface of the drive roller (61), and a sliding ring (642) is slidably connected to the outer surface of the support guide rod (641), and a counterweight protrusion (643) is fixedly connected to the top of the outer surface of the sliding ring (642), and an annular extension edge (644) is fixedly connected to the bottom edge of the sliding ring (642). A screening assembly (8) is provided inside the machine body (1) and near the drive roller (61). The screening assembly (8) includes a frame (81). The top of the outer surface of the frame (81) is fixedly connected to the inner surface of the machine body (1). A screen (82) is fixedly connected to the bottom of the inner surface of the frame (81). A support spring (83) is fixedly connected to the outer surface of the frame (81). A strong magnetic ball (84) is fixedly connected to the end of the outer surface of the support spring (83). A push rod (85) is hinged to the bottom of the strong magnetic ball (84). A cleaning scraper (86) is hinged to the bottom of the push rod (85).

2. The structure of a coal mill suitable for blending kaolin as described in claim 1, characterized in that: The outer surface end of the drive roller (61) penetrates the inner surface of the machine body (1) and extends into the interior of the gearbox (2). The output end of the servo motor (3) is connected to the outer surface end of the drive roller (61) through the gearbox (2). The eccentric grinding part (62) and the eccentric grinding part (62) are set as one piece. The jet holes (65) are evenly distributed on the inner surface of the drive roller (61).

3. A coal pulverizer construction suitable for blending kaolin as claimed in claim 1 wherein: The support guide rods (641) are evenly distributed inside the drive roller (61). The support guide rods (641) pass through the center of the sliding ring (642) and the annular extension edge (644). The outer surface of the sliding ring (642) has a sliding hole that matches the support guide rods (641) at its center.

4. A coal pulverizer construction suitable for blending kaolin as claimed in claim 1 wherein: The machine body (1) is equipped with a pretreatment component (7) located directly below the feed hopper (4). The pretreatment component (7) includes a crushing roller (71) and a butterfly receiving frame (72). The outer surface end of the crushing roller (71) is rotatably connected to the inner surface of the machine body (1). The outer surface edge of the butterfly receiving frame (72) is fixedly connected to the inner surface of the machine body (1) by screws. The outer surface end of the crushing roller (71) penetrates the inner surface of the machine body (1) and extends into the interior of the gearbox (2). The output end of the servo motor (3) is connected to the outer surface end of the crushing roller (71) via the gearbox (2). The outer surface of the crushing roller (71) is fixedly connected with crushing teeth (73). The bottom of the butterfly receiving frame (72) is provided with a leakage square hole (74). A vibration module (75) is provided at the center of the bottom of the butterfly receiving frame (72).

5. A coal pulverizer construction suitable for blending kaolin as claimed in claim 4 wherein: There are two crushing rollers (71), and the two crushing rollers (71) are symmetrically arranged along the central position of the butterfly receiving frame (72). The crushing teeth (73) are evenly distributed on the outer surface of the crushing rollers (71).

6. A coal pulverizer construction suitable for blending kaolin as claimed in claim 4 wherein: The bottom of the inner surface of the butterfly receiving frame (72) is set as arc, and the leakage square holes (74) are evenly distributed on the bottom of the inner surface of the butterfly receiving frame (72).

7. A coal pulverizer construction suitable for blending kaolin as claimed in claim 4 wherein: The vibration module (75) includes a strip-shaped housing (751), the top of which is fixedly connected to the bottom of a butterfly-shaped receiving frame (72). A push rod (752) is slidably connected to the bottom of the strip-shaped housing (751), a pusher (753) is fixedly connected to the bottom end of the push rod (752), an impact rod (754) is fixedly connected to the top end of the push rod (752), and an elastic reset member (755) is fixedly connected to the outer surface of the impact rod (754).

8. A coal pulverizer construction suitable for blending kaolin as claimed in claim 7 wherein: The bottom end of the elastic reset member (755) is fixedly connected to the inner surface of the strip housing (751). The bottom of the strip housing (751) is provided with a sliding hole that matches the push rod (752). The bottom of the push member (753) is set as an arc surface.

9. A coal pulverizer construction suitable for blending kaolin as claimed in claim 1 wherein: The screen (82) is set in an arc shape and is located directly below the drive roller (61). The bottom of the cleaning scraper (86) is in contact with the bottom of the inner surface of the machine body (1).

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