Dynamic and static ring adjusting mechanism of coal mill

Abstract

The invention belongs to the technical field of coal mills, and discloses a coal mill dynamic and static ring adjusting mechanism which comprises an adjusting assembly, the adjusting assembly comprises a motor, the bottom of the motor is rotatably connected with a lead screw, the lead screw is sleeved with a threaded sleeve in a threaded mode, and the threaded sleeve is fixedly connected with a sliding block; the top of the sliding block is fixedly connected with two piston rods. Through cooperation of the threaded sleeve, the sliding block and other structures, the distance between the static ring and the movable ring can be adjusted conveniently, the distance between the static ring and the movable ring can pass through pulverized coal particles with the needed size and the size smaller than the needed size, the average particle size of a final product is controlled, meanwhile, various production requirements can be met, and the production efficiency is improved. The size distribution of ground powder can be changed only by simply adjusting the distance between the static ring and the dynamic ring, the requirements of different industries or purposes are met, the production flexibility is improved, and when the static ring or the dynamic ring is abraded, the influence of abrasion on the quality of a produced product can be reduced by adjusting the distance.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mills, in particular to a dynamic and static ring adjustment mechanism of a coal mill. Background Art

[0002] Coal mill is the main equipment of the pulverizing system of coal-fired power plants, and the dynamic and static ring structure is an important structure of the coal mill to ensure normal pulverizing. During the operation of the coal mill, the grinding disc is driven by the motor to rotate, and the material falls into the center of the grinding disc from the feed port through the wind lock feeder. At the same time, hot air enters the mill from the air inlet. As the grinding disc rotates, the material moves to the edge of the grinding disc under the action of centrifugal force, and is crushed by the grinding roller when passing through the annular groove on the grinding disc. The crushed material is blown up at the edge of the grinding disc by the primary wind that enters the surroundings of the grinding ring through the dynamic ring. Large particles fall directly on the grinding disc and are crushed again. When the material in the air flow passes through the upper separator, under the action of the rotating rotor, the coarse powder falls from the cone bucket to the grinding disc for re-grinding, and the qualified fine powder is discharged from the mill with the air flow and collected by the dust collecting device as the product. The static ring of the coal mill is fixedly installed on the casing bracket, the dynamic ring is connected to the grinding disc and rotates together, and there is a certain gap between the dynamic ring and the static ring.

[0003] In the existing coal mills, the gap between the moving and static rings is mostly fixed, which means that the device can only produce coal powder particles of fixed size. The production flexibility of the device is poor. At the same time, when the side where the moving and static rings are close to each other is worn, the size of the produced product will be larger than the required size. Therefore, a moving and static ring adjustment mechanism of a coal mill is proposed, which has the effect of facilitating the adjustment of the spacing between the moving and static rings. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology that the gap between the dynamic and static rings is mostly fixed, resulting in the device being able to produce only coal powder particles of fixed size and having poor production flexibility, and at the same time when the side where the dynamic and static rings are close to each other is worn, the size of the produced product will be larger than the required size, the present invention provides a dynamic and static ring adjustment mechanism for a coal mill.

[0005] To achieve the above object, the present invention provides the following technical solution: a dynamic and static ring adjustment mechanism of a coal mill, comprising an adjustment component, a transmission component is rotatably connected below the adjustment component, the transmission component is arranged inside the fixed component, the fixed component is arranged inside the coal mill component, and the adjustment component is located inside the coal mill component; The adjusting assembly includes a motor, a screw rod is rotatably connected to the bottom of the motor, a threaded sleeve is threadedly sleeved on the screw rod, a slider is fixedly connected to the threaded sleeve, two piston rods are fixedly connected to the top of the slider, a spring is fixedly connected to the top of the slider, a static ring is slidably connected to the slider, a plurality of first sliding grooves are provided on the side of the static ring, two sealing cavities are provided on the inner walls of the plurality of first sliding grooves, and an elastic anti-collision pad is fixedly connected to the inner wall of the first sliding groove.

[0006] Preferably, the piston rod is located inside the spring, the slider is slidably connected to the first slide groove, there are several sliders and screw rods, and the several sliders are evenly distributed on the side of the static ring. The top of the slider is elastically connected to the inner wall of the first slide groove through the spring, the piston rod passes through the inner wall of the first slide groove and extends to the inside of the sealed cavity, the top of the first slide groove is slidably connected to the sealed cavity, and the elastic anti-collision pad is located below the slider.

[0007] Preferably, the transmission assembly includes a gear ring, a plurality of driving gears are meshed on the side of the gear ring, a plurality of arc grooves are evenly opened on the gear ring, a plurality of adjustment plates are slidably connected to the top of the gear ring, two sliding rods are fixedly connected to the upper and lower ends of the adjustment plates, and a plurality of the adjustment plates are fixedly connected to an elastic telescopic ring on the side away from the driving gear.

[0008] Preferably, the slide rod is slidably connected to the arc groove, the tops of the plurality of driving gears are fixedly connected to the bottoms of the plurality of lead screws, respectively, and the elastic telescopic ring is located below the static ring.

[0009] Preferably, the fixing assembly includes a fixing frame, a partition is fixedly connected to the inner side of the fixing frame, guide grooves are evenly arranged on the bottom of the partition, an elastic sealing gasket is fixedly connected to the top of the partition, a plurality of second slide grooves are evenly arranged on the inner side of the fixing frame, and a third slide groove is arranged on the inner side of the fixing frame.

[0010] Preferably, the second chute is located above the partition, and the third chute is located below the partition.

[0011] Preferably, a plurality of motors are fixedly connected inside the fixing frame, the screw rod is rotationally connected to the inner wall of the fixing frame, the threaded sleeve is slidingly connected to the inner wall of the fixing frame, the slider is slidingly connected to the second sliding groove, and the driving gear is rotationally connected to the inner wall of the fixing frame.

[0012] Preferably, the gear ring is rotationally connected to the inner wall of the fixed frame, several of the adjustment plates are slidingly connected to the third slide groove, the static ring is located on the inner side of the fixed frame, the slider passes through the second slide groove and extends to the inside of the first slide groove, and the bottom of the static ring is elastically connected to the partition through an elastic sealing gasket.

[0013] Preferably, the coal grinding assembly comprises a coal grinding machine shell, a grinding disc is rotatably connected to the inside of the coal grinding machine shell, a grinding groove is provided on the top of the grinding disc, a moving ring is fixedly connected to the outside of the grinding disc, and a plurality of air ducts are evenly provided on the moving ring.

[0014] Preferably, the static ring is located above the dynamic ring, and the elastic telescopic ring is located between the adjustment plate and the dynamic ring.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The invention facilitates the adjustment of the spacing between the static ring and the dynamic ring by arranging the cooperation of structures such as the threaded sleeve and the slider. The motor is started to rotate the screw rod. The rotation of the screw rod drives the threaded sleeve to move upward inside the fixed frame through the adjusting component thread, drives the slider to slide upward inside the second slide groove, separates the bottom of the slider from the elastic anti-collision pad, drives the piston rod to move upward inside the sealing chamber, squeezes the gas inside the sealing chamber, and squeezes the spring at the same time. The static ring is driven to move upward stably through the elastic force of the spring and the air pressure inside the sealing chamber, stretches the elastic sealing gasket, and increases the gap between the static ring and the dynamic ring, so that the spacing between the static ring and the dynamic ring can pass the coal powder particles of the required size and smaller than the required size, and the average particle size of the final product is controlled. At the same time, it can adapt to various production needs. Only by simply adjusting the spacing between the static and dynamic rings, the particle size distribution of the milled powder can be changed to meet the requirements of different industries or uses, and the flexibility of production is improved. When the static ring or the dynamic ring is worn, the influence of wear on the quality of the produced product can be reduced by adjusting the spacing. The present invention facilitates the adjustment of the spacing between the elastic telescopic ring and the dynamic ring by arranging the coordination of structures such as the adjustment plate and the elastic telescopic ring. The rotation of the screw rod drives the active gear to rotate, and the rotation of the active gear drives the gear ring to rotate inside the fixed frame. The rotation of the fixed frame applies stress to the adjustment plate through the arc groove. Through the stress, a plurality of adjustment plates slide in the direction of the guide groove in the third slide groove in the direction away from the dynamic ring under the limitation of the guide groove, stretching the elastic telescopic ring and increasing the spacing between the elastic telescopic ring and the dynamic ring. The spacing between the elastic telescopic ring and the dynamic ring is adjusted synchronously with the static ring, so that the spacing between the elastic telescopic ring and the dynamic ring is adapted to the spacing between the static ring and the dynamic ring, thereby avoiding the spacing between the elastic telescopic ring and the dynamic ring being larger than the spacing between the static ring and the dynamic ring, resulting in increased air volume, air leakage and decreased efficiency. At the same time, the spacing between the elastic telescopic ring and the dynamic ring is smaller than the spacing between the static ring and the dynamic ring, resulting in the situation that coal powder particles of the required size cannot smoothly fall under the dynamic ring. The present invention facilitates the buffering of the static ring by arranging the cooperation of structures such as elastic anti-collision pads and elastic sealing gaskets. When coal powder particles slightly larger than the required size pass through the gap between the static ring and the dynamic ring, the coal powder particles will squeeze the static ring upwards, causing the static ring to move slightly upwards and stretch the elastic sealing gasket. The static ring is buffered by the elastic force of the elastic sealing gasket. In this process, some of the coal powder particles will be ground into the required size by the static ring and the dynamic ring, and at the same time, the slider is made to move downward relatively inside the first slide groove, so that the bottom of the slider is abutted against the elastic anti-collision pad, limiting the upward distance of the static ring and preventing larger coal powder particles from entering the gap between the static ring and the dynamic ring. This is because the enlarged coal powder particles cannot be ground into the required size during the short time when the coal powder particles pass through the gap. The provision of the elastic anti-collision pad can avoid the noise generated by the collision of the slider with the inner wall of the first slide groove and the wear of the slider. At the same time, the elasticity can play a certain role in the stability of the static ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the coal grinding assembly of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the structural relationship between the static ring and the dynamic ring of the present invention; Figure 5 A schematic diagram of the structural relationship between the slide bar and the guide groove of the present invention; Figure 6 A schematic diagram of the structural relationship between the slide bar and the arc groove of the present invention; Figure 7 This is a bottom view of the structure of the adjustment plate of the present invention; Figure 8 It is a schematic diagram of the structural relationship between the slider and the second slider of the present invention.

[0017] In the figure: 1. Adjustment component; 101. Motor; 102. Screw rod; 103. Threaded sleeve; 104. Slider; 105. Piston rod; 106. Spring; 107. Stationary ring; 108. First slide groove; 109. Sealing chamber; 110. Elastic anti-collision pad; 2. Transmission component; 201. Active gear; 202. Gear ring; 203. Arc groove; 204. Adjustment plate; 205. Slide rod; 206. Elastic telescopic ring; 3. Fixing component; 301. Fixing frame; 302. Partition; 303. Guide groove; 304. Elastic sealing gasket; 305. Second slide groove; 306. Third slide groove; 4. Coal grinding component; 401. Coal grinding machine housing; 402. Grinding disc; 403. Grinding groove; 404. Moving ring; 405. Air duct. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 8 As shown, the present invention provides a dynamic and static ring adjustment mechanism of a coal mill, comprising an adjustment component 1, a transmission component 2 is rotatably connected below the adjustment component 1, the transmission component 2 is arranged inside a fixed component 3, the fixed component 3 is arranged inside a coal mill component 4, and the adjustment component 1 is located inside the coal mill component 4; The adjustment component 1 includes a motor 101, the bottom of the motor 101 is rotatably connected to a screw rod 102, a threaded sleeve 103 is threadedly sleeved on the screw rod 102, a slider 104 is fixedly connected to the threaded sleeve 103, two piston rods 105 are fixedly connected to the top of the slider 104, a spring 106 is fixedly connected to the top of the slider 104, a static ring 107 is slidably connected to the slider 104, a plurality of first sliding grooves 108 are provided on the side of the static ring 107, the inner walls of the plurality of first sliding grooves 108 are each provided with two sealing cavities 109, and an elastic anti-collision pad 110 is fixedly connected to the inner wall of the first sliding groove 108.

[0020] The piston rod 105 is located inside the spring 106, and the slider 104 is slidably connected to the first slide groove 108. There are several sliders 104 and screw rods 102, and several sliders 104 are evenly distributed on the side of the static ring 107. The top of the slider 104 is elastically connected to the inner wall of the first slide groove 108 through the spring 106. The piston rod 105 passes through the inner wall of the first slide groove 108 and extends to the inside of the sealed cavity 109. The top of the first slide groove 108 is slidably connected to the sealed cavity 109, and the inner wall of the first slide groove 108 is fixedly connected with an elastic anti-collision pad 110.

[0021] The above scheme is adopted: by setting the cooperation of structures such as the threaded sleeve 103 and the slider 104, it is convenient to adjust the distance between the static ring 107 and the dynamic ring 404, and the motor 101 is started to rotate the screw rod 102. The rotation of the screw rod 102 will drive the threaded sleeve 103 to move upward inside the fixed frame 301 through the thread of the adjustment component 1, and drive the slider 104 to slide upward inside the second slide groove 305, so that the bottom of the slider 104 is separated from the elastic anti-collision pad 110, and drive the piston rod 105 to move upward inside the sealing chamber 109, squeeze the gas inside the sealing chamber 109, and at the same time squeeze the spring 106, through the elasticity of the spring 106 The force and the air pressure inside the sealing chamber 109 drive the static ring 107 to move upward steadily, stretch the elastic sealing gasket 304, and increase the gap between the static ring 107 and the dynamic ring 404, so that the distance between the static ring 107 and the dynamic ring 404 can pass the coal powder particles of the required size and smaller than the required size, thereby controlling the average particle size of the final product and adapting to various production needs. Only by simply adjusting the distance between the static and dynamic rings can the particle size distribution of the ground powder be changed to meet the requirements of different industries or uses and to improve the flexibility of production. When the static ring 107 or the dynamic ring 404 is worn, the distance can be adjusted to reduce the influence of wear on the quality of the produced product.

[0022] like Figures 3 to 7 As shown, the transmission assembly 2 includes a gear ring 202, and a plurality of driving gears 201 are meshed on the side of the gear ring 202. A plurality of arc grooves 203 are evenly opened on the gear ring 202. A plurality of adjustment plates 204 are slidably connected to the top of the gear ring 202. Two sliding rods 205 are fixedly connected to the upper and lower ends of the adjustment plates 204. An elastic telescopic ring 206 is fixedly connected to the side of the plurality of adjustment plates 204 away from the driving gear 201. The sliding rod 205 is slidably connected to the arc groove 203. The tops of the plurality of driving gears 201 are fixedly connected to the bottoms of the plurality of lead screws 102 respectively, and the elastic telescopic ring 206 is located below the static ring 107.

[0023] The fixing assembly 3 includes a fixing frame 301, a partition 302 is fixedly connected to the inner side of the fixing frame 301, a guide groove 303 is evenly provided at the bottom of the partition 302, an elastic sealing gasket 304 is fixedly connected to the top of the partition 302, a plurality of second slide grooves 305 are evenly provided on the inner side of the fixing frame 301, a third slide groove 306 is provided on the inner side of the fixing frame 301, the second slide groove 305 is located above the partition 302, and the third slide groove 306 is located below the partition 302.

[0024] The above scheme is adopted: by setting the coordination of the adjustment plate 204 and the elastic telescopic ring 206 and other structures, it is convenient to adjust the distance between the elastic telescopic ring 206 and the moving ring 404. The rotation of the screw rod 102 will drive the driving gear 201 to rotate. The rotation of the driving gear 201 will drive the gear ring 202 to rotate inside the fixed frame 301. The rotation of the fixed frame 301 will apply stress to the adjustment plate 204 through the arc groove 203. Through the stress, a plurality of adjustment plates 204 slide in the direction of the guide groove 303 and away from the moving ring 404 inside the third slide groove 306 under the limitation of the guide groove 303. The elastic expansion ring 206 is stretched, and the distance between the elastic expansion ring 206 and the dynamic ring 404 is increased, and it is adjusted synchronously with the static ring 107 to make the distance between the elastic expansion ring 206 and the dynamic ring 404 match the distance between the static ring 107 and the dynamic ring 404, so as to avoid the distance between the elastic expansion ring 206 and the dynamic ring 404 being larger than the distance between the static ring 107 and the dynamic ring 404, which leads to increased air volume, air leakage and decreased efficiency; at the same time, the distance between the elastic expansion ring 206 and the dynamic ring 404 is smaller than the distance between the static ring 107 and the dynamic ring 404, which leads to the situation that coal powder particles of the required size cannot smoothly fall under the dynamic ring 404.

[0025] like Figures 1 to 3 As shown, several motors 101 are fixedly connected inside the fixed frame 301, the screw rod 102 is rotatably connected to the inner wall of the fixed frame 301, the threaded sleeve 103 is slidably connected to the inner wall of the fixed frame 301, the slider 104 is slidably connected to the second slide groove 305, the driving gear 201 is rotatably connected to the inner wall of the fixed frame 301, the gear ring 202 is rotatably connected to the inner wall of the fixed frame 301, several adjustment plates 204 are slidably connected to the third slide groove 306, the static ring 107 is located on the inner side of the fixed frame 301, the slider 104 passes through the second slide groove 305 and extends to the inside of the first slide groove 108, and the bottom of the static ring 107 is elastically connected to the partition 302 through the elastic sealing gasket 304.

[0026] The coal grinding assembly 4 includes a coal mill shell 401, an inner part of which is rotatably connected to a grinding disc 402, a top of which is provided with a grinding groove 403, an outer side of the grinding disc 402 is fixedly connected to a moving ring 404, a plurality of air ducts 405 are evenly provided on the moving ring 404, a static ring 107 is located above the moving ring 404, and an elastic telescopic ring 206 is located between the adjusting plate 204 and the moving ring 404.

[0027] The above scheme is adopted: by setting the elastic anti-collision pad 110 and the elastic sealing gasket 304 and other structures, it is convenient to buffer the static ring 107. When the coal powder particles slightly larger than the required size pass through the gap between the static ring 107 and the dynamic ring 404, the coal powder particles will press the static ring 107 upward, causing the static ring 107 to move slightly upward and stretch the elastic sealing gasket 304. The static ring 107 is buffered by the elastic force of the elastic sealing gasket 304. In this process, the part of the coal powder particles will be ground into the required size by the static ring 107 and the dynamic ring 404, and at the same time, the slider 104 is The interior of a slide groove 108 moves downward relatively, so that the bottom of the slider 104 is against the elastic anti-collision pad 110, limiting the upward distance of the static ring 107 and preventing larger coal powder particles from entering the gap between the static ring 107 and the dynamic ring 404. This is because in the short time when the coal powder particles pass through the gap, the enlarged coal powder particles cannot be ground into the required size. The elastic anti-collision pad 110 can avoid the noise generated by the collision between the slider 104 and the inner wall of the first slide groove 108 and the wear of the slider 104. At the same time, the elasticity can play a certain role in the stability of the static ring 107.

[0028] The working principle and use process of the present invention are as follows: first, the motor 101 is started to rotate the screw rod 102. The rotation of the screw rod 102 will drive the threaded sleeve 103 to move upward inside the fixed frame 301 through the thread of the adjusting component 1, and drive the slider 104 to slide upward inside the second slide groove 305, so that the bottom of the slider 104 is separated from the elastic anti-collision pad 110, and drive the piston rod 105 to move upward inside the sealing chamber 109, squeeze the gas inside the sealing chamber 109, and squeeze the spring 106 at the same time. The elastic force of the spring 106 and the air pressure inside the sealing chamber 109 drive the static ring 107 to move upward stably, stretch the elastic sealing gasket 304, and increase the gap between the static ring 107 and the dynamic ring 404. It is adjusted synchronously with the static ring 107 so that the distance between the static ring 107 and the dynamic ring 404 can pass the coal powder particles of the required size and smaller than the required size; At the same time, the rotation of the screw rod 102 will drive the active gear 201 to rotate, and the rotation of the active gear 201 will drive the gear ring 202 to rotate inside the fixed frame 301. The rotation of the fixed frame 301 will apply stress to the adjustment plate 204 through the arc groove 203. Through the stress, the plurality of adjustment plates 204 are limited by the guide groove 303 and slide along the direction of the guide groove 303 in the third slide groove 306 in the direction away from the dynamic ring 404, stretching the elastic expansion ring 206 and increasing the distance between the elastic expansion ring 206 and the dynamic ring 404, so that the distance between the elastic expansion ring 206 and the dynamic ring 404 is adapted to the distance between the static ring 107 and the dynamic ring 404. During the operation of the grinding wheel 402, when coal powder particles slightly larger than the required size pass through the gap between the static ring 107 and the dynamic ring 404, the coal powder particles will squeeze the static ring 107 upward, causing the static ring 107 to move slightly upward and stretch the elastic sealing gasket 304. The static ring 107 is buffered by the elastic force of the elastic sealing gasket 304. During this process, this part of the coal powder particles will be ground into the required size by the static ring 107 and the dynamic ring 404, and at the same time, the slider 104 will move relatively downward inside the first slide groove 108, so that the bottom of the slider 104 will be against the elastic anti-collision pad 110, limiting the upward distance of the static ring 107 and preventing larger coal powder particles from entering the gap between the static ring 107 and the dynamic ring 404. This is because the enlarged coal powder particles cannot be ground into the required size in the short time that the coal powder particles pass through the gap.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dynamic and static ring adjustment mechanism for a coal mill, comprising an adjustment component (1), characterized in that: A transmission assembly (2) is rotatably connected below the adjustment assembly (1); the transmission assembly (2) is arranged inside the fixed assembly (3); the fixed assembly (3) is arranged inside the coal grinding assembly (4); and the adjustment assembly (1) is located inside the coal grinding assembly (4); The adjustment assembly (1) comprises a motor (101), the bottom of the motor (101) is rotatably connected to a screw rod (102), the screw rod (102) is threadedly sleeved with a threaded sleeve (103), a slider (104) is fixedly connected to the threaded sleeve (103), the top of the slider (104) is fixedly connected to two piston rods (105), the top of the slider (104) is fixedly connected to a spring (106), the slider (104) is slidably connected to a stationary ring (107), a side of the stationary ring (107) is provided with a plurality of first sliding grooves (108), the inner walls of the plurality of first sliding grooves (108) are each provided with two sealing cavities (109), and the inner walls of the first sliding grooves (108) are fixedly connected to an elastic anti-collision pad (110).

2. The dynamic and static ring adjustment mechanism of the coal mill according to claim 1 is characterized in that: The piston rod (105) is located inside the spring (106), and the slider (104) is slidably connected to the first slide groove (108). There are a plurality of sliders (104) and a plurality of screw rods (102). The plurality of sliders (104) are evenly distributed on the side of the stationary ring (107). The top of the slider (104) is elastically connected to the inner wall of the first slide groove (108) through the spring (106). The piston rod (105) passes through the inner wall of the first slide groove (108) and extends to the inside of the sealing cavity (109). The top of the first slide groove (108) is slidably connected to the sealing cavity (109). The elastic anti-collision pad (110) is located below the slider (104).

3. The dynamic and static ring adjustment mechanism of the coal mill according to claim 1, characterized in that: The transmission assembly (2) comprises a gear ring (202), a side of the gear ring (202) is meshed with a plurality of driving gears (201), a plurality of arc grooves (203) are evenly arranged on the gear ring (202), a plurality of adjustment plates (204) are slidably connected above the gear ring (202), two sliding rods (205) are fixedly connected to the upper and lower ends of the adjustment plates (204), and a side of the plurality of adjustment plates (204) away from the driving gear (201) is fixedly connected to an elastic telescopic ring (206).

4. The dynamic and static ring adjustment mechanism of the coal mill according to claim 3 is characterized in that: The sliding rod (205) is slidably connected to the arc groove (203), the tops of the plurality of driving gears (201) are respectively fixedly connected to the bottoms of the plurality of screw rods (102), and the elastic telescopic ring (206) is located below the stationary ring (107).

5. The dynamic and static ring adjustment mechanism of the coal mill according to claim 3, characterized in that: The fixing assembly (3) comprises a fixing frame (301), a partition (302) is fixedly connected to the inner side of the fixing frame (301), a guide groove (303) is evenly provided at the bottom of the partition (302), an elastic sealing gasket (304) is fixedly connected to the top of the partition (302), a plurality of second sliding grooves (305) are evenly provided on the inner side of the fixing frame (301), and a third sliding groove (306) is provided on the inner side of the fixing frame (301).

6. The dynamic and static ring adjustment mechanism of the coal mill according to claim 5, characterized in that: The second slide groove (305) is located above the partition (302), and the third slide groove (306) is located below the partition (302).

7. The dynamic and static ring adjustment mechanism of the coal mill according to claim 5, characterized in that: A plurality of motors (101) are fixedly connected inside the fixing frame (301), the screw rod (102) is rotationally connected to the inner wall of the fixing frame (301), the threaded sleeve (103) is slidably connected to the inner wall of the fixing frame (301), the slider (104) is slidably connected to the second sliding groove (305), and the driving gear (201) is rotationally connected to the inner wall of the fixing frame (301).

8. The dynamic and static ring adjustment mechanism of a coal mill according to claim 5, characterized in that: The gear ring (202) is rotationally connected to the inner wall of the fixed frame (301), a plurality of the adjustment plates (204) are slidingly connected to the third slide groove (306), the static ring (107) is located on the inner side of the fixed frame (301), the slider (104) passes through the second slide groove (305) and extends to the inside of the first slide groove (108), and the bottom of the static ring (107) is elastically connected to the partition (302) through an elastic sealing gasket (304).

9. The dynamic and static ring adjustment mechanism of a coal mill according to claim 5, characterized in that: The coal grinding assembly (4) comprises a coal grinding machine housing (401), a grinding disc (402) being rotatably connected to the inside of the coal grinding machine housing (401), a grinding groove (403) being provided on the top of the grinding disc (402), a moving ring (404) being fixedly connected to the outside of the grinding disc (402), and a plurality of air ducts (405) being evenly provided on the moving ring (404).

10. The dynamic and static ring adjustment mechanism of the coal mill according to claim 9, characterized in that: The static ring (107) is located above the dynamic ring (404), and the elastic telescopic ring (206) is located between the adjustment plate (204) and the dynamic ring (404).

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