Intelligent energy-saving coal mill

Abstract

The intelligent energy-saving coal mill comprises a shell, a grinding roller and a grinding disc assembly, an inner containing cavity is formed in the shell, and a feeding port, a pulverized coal outlet and a hot air inlet which communicate with the inner containing cavity are formed in the shell; the grinding roller is arranged in the inner containing cavity; the millstone assembly is arranged in the containing cavity and located below the grinding roller, relative rolling friction is generated between the millstone assembly and the roller surface of the grinding roller through autorotation, the millstone assembly comprises partition plates and connecting blocks which are arranged at intervals, and when the connecting blocks are located at the first position, the upper end faces of the connecting blocks are flush with the upper end faces of the partition plates, and when the connecting blocks are located at the second position, the upper end faces of the connecting blocks are flush with the upper end faces of the partition plates. The upper end face of the connecting block is lower than the upper end face of the partition plate. When the connecting block is located at the first position, the upper end face of the connecting block is flush with the upper end face of the partition plate, and at the moment, the grinding roller is matched to normally grind coal cinder; and when the connecting block is located at the second position, the upper end face of the connecting block is lower than the upper end face of the partition plate, at the moment, the coal cinder can be cut in cooperation with the grinding roller, and the large coal cinder is rapidly cut up.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mills, in particular to an intelligent energy-saving coal mill. BACKGROUND

[0002] During the working process of the coal mill, the coal blocks fall into the millstone from the coal falling pipe, and the coal dregs generated in the grinding process will adhere to the millstone and the grinding roller. If not handled in time, the coal dregs will accumulate more and more over time. At this time, the grinding of the coal dregs will consume a large amount of energy, and the accumulation of the coal dregs will also cause the hot air in the coal mill to cause the coal dregs to catch fire, etc., which will have a great impact on the production of coal powder. SUMMARY

[0003] The present application provides an intelligent energy-saving coal mill to solve the problem that the coal dregs generated in the grinding process will adhere to the millstone and the grinding roller, resulting in a large amount of energy consumption, and the accumulation of the coal dregs will also cause the coal dregs to catch fire.

[0004] The present application provides an intelligent energy-saving coal mill, comprising: a shell, a content cavity is formed in the shell, and a feeding port, a coal powder outlet and a hot air inlet are formed in the shell and communicate with the content cavity; a grinding roller, which is arranged in the content cavity; a millstone assembly, which is arranged in the content cavity and below the grinding roller, and is arranged to rotate and rub against the surface of the grinding roller, the millstone assembly comprises partition plates and connecting blocks arranged at intervals, the upper end surface of the connecting block is flush with the upper end surface of the partition plate when the connecting block is located at a first position, and the upper end surface of the connecting block is lower than the upper end surface of the partition plate when the connecting block is located at a second position; a driving assembly for driving the connecting block to move to the first position or the second position.

[0005] In a possible design, the millstone assembly comprises a millstone outer ring, a millstone inner ring and a millstone middle ring, the millstone middle ring is located between the millstone outer ring and the millstone inner ring, the millstone middle ring comprises a bottom plate, the partition plates and the connecting blocks are arranged on the bottom plate in a circumferential direction, the inner edge of the partition plate is connected to the millstone inner ring, and the outer edge of the partition plate is connected to the millstone outer ring.

[0006] In a possible design, a first interval groove is formed between two adjacent partition plates, and the inner wall of the first interval groove is in clearance fit with the connecting block; a second interval groove is formed between two adjacent connecting blocks, and the inner wall of the second interval groove is in clearance fit with the partition plate.

[0007] In a possible design, the upper end surfaces of the millstone outer ring and the millstone inner ring are higher than the upper end surface of the millstone middle ring, so that an annular groove is formed between the millstone outer ring, the millstone inner ring and the millstone middle ring.

[0008] In a possible design, the millstone base is further provided, and the driving assemblies are circumferentially arranged between the millstone base and the millstone assembly, each of the driving assemblies comprises: a first connecting rod, one end of the first connecting rod is rotationally connected with the middle ring of the millstone, and the other end is rotationally connected with the outer ring of the millstone; a second connecting rod, one end of the second connecting rod is rotationally connected with the middle ring of the millstone, and the other end is rotationally connected with the inner ring of the millstone; a telescopic rod, one end of the telescopic rod is arranged on the millstone base, and the other end is connected with the middle ring of the millstone, the telescopic rod adjusts the included angle between the first connecting rod and the second connecting rod through telescopic adjustment, so that the connecting block moves to the first position or the second position.

[0009] In a possible design, the inner ring of the millstone comprises a lower layer plate, an upper layer plate and a support circular table, the support circular table is located between the lower layer plate and the upper layer plate, and a cleaning piece is elastically connected along the circumference of the support circular table, the support circular table generates centrifugal force through rotation, so that the cleaning piece overcomes the elastic force and moves radially to the middle ring of the millstone to clean the middle ring of the millstone.

[0010] In a possible design, a plurality of radial extension guide holes are uniformly arranged in the side wall of the support circular table, and the cleaning piece comprises: a guide rod, one end of the guide rod is in sliding fit with the inner wall of the guide hole, and the other end extends radially outward; an end rod, the end rod is sleeved on the end of the guide rod away from the support circular table, and a brush head is arranged on the end rod; a spring, the spring is sleeved on the guide rod, one end of the spring abuts against the support circular table, and the other end abuts against the end rod.

[0011] In a possible design, the millstone further comprises: a coal falling pipe, an upper end of the coal falling pipe is in communication with the feeding port, and a lower end of the coal falling pipe extends toward the millstone assembly; a separation plate, the separation plates are uniformly arranged along the circumference of the coal falling pipe, and an axial communication through straight groove is formed between adjacent two separation plates.

[0012] In a possible design, the millstone further comprises: a lower baffle, the lower baffle is concave annular, is located at the upper end of the separation plate, and an inner edge of the lower baffle is connected with an outer side of the separation plate; an upper baffle, the upper baffle is convex annular, is located above the lower baffle, and is sleeved on the coal falling pipe, an outer diameter of the upper baffle is greater than an inner diameter of the lower baffle, and an outer diameter of the lower baffle is less than an outer diameter of the upper baffle.

[0013] In a possible design, the millstone further comprises: a first motor, the first motor is in driving connection with the lower layer plate, and is used to drive the inner ring of the millstone to rotate; a second motor, the second motor is arranged on the upper layer plate, is in driving connection with the support circular table, and is used to drive the support circular table to rotate. A protective cover is arranged around the second motor.

[0014] The beneficial effects of the present application are as follows: The present application discloses an intelligent energy-saving coal mill. The inner ring of the grinding disc assembly comprises a plurality of partition plates and connecting blocks arranged at intervals. The connecting blocks can move axially, so that the partition plates and the connecting blocks can be separated and combined. When the connecting blocks are located at the first position, the upper end surface of the connecting blocks is flush with the upper end surface of the partition plates, and at this time, the grinding roller can normally grind the coal cinder. When the connecting blocks are located at the second position, the upper end surface of the connecting blocks is lower than the upper end surface of the partition plates, and at this time, the grinding roller can cut the coal cinder, so that the large coal cinder can be quickly cut into small pieces.

[0015] A rotatable support circular table is arranged in the inner ring of the grinding disc. The side of the support circular table is provided with a spring, a guide rod, an end rod and a brush head. When the rotating speed of the support circular table reaches a certain value, the centrifugal force acting on the guide rod overcomes the pulling force of the spring. At this time, the resultant force of the centrifugal force and the pulling force of the spring can pull the guide rod out of the support circular table and make the spring change from the balanced state to the stretched state. When the guide rod continuously extends to the inner ring of the grinding disc, the brush head on the end rod can clean the coal cinder in the inner ring of the grinding disc, which is beneficial to removing the accumulated coal cinder on the inner ring of the grinding disc. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 The overall structure schematic diagram of the intelligent energy-saving coal mill provided by the embodiment of the present application is shown in the figure. Figure 2 The internal schematic diagram of the intelligent energy-saving coal mill provided by the embodiment of the present application is shown in the figure. Figure 3 The structure schematic diagram of the grinding disc assembly of the intelligent energy-saving coal mill provided by the embodiment of the present application is shown in the figure. Figure 4 The grinding disc assembly schematic diagram of the intelligent energy-saving coal mill provided by the embodiment of the present application is shown in the figure. Figure 5 The Figure 4 The enlarged view of A in the figure. Figure 6 The partition plate schematic diagram of the grinding disc assembly of the intelligent energy-saving coal mill provided by the embodiment of the present application is shown in the figure. Figure 7 The internal structure schematic diagram of the grinding disc assembly of the intelligent energy-saving coal mill provided by the embodiment of the present application is shown in the figure. Figure 8 For Figure 7 Enlarged view at B; Figure 9 For Figure 7 Enlarged view at C; Figure 10 Cross-sectional view of the mill disc assembly of the intelligent energy-saving coal mill provided in the embodiments of the present application; Figure 11 Overall structural cross-sectional view of the intelligent energy-saving coal mill provided in the embodiments of the present application.

[0018] Reference signs: 1, upper shell; 2, inlet; 3, coal powder outlet; 4, hot air inlet; 5, first motor; 6, coal falling pipe; 7, upper baffle; 8, lower baffle; 9, loading frame; 10, mill roller; 11, mill disc assembly; 12, lower shell; 13, separation plate; 14, speed reducer; 1101, mill disc outer ring; 1102, mill disc inner ring; 1103, mill disc middle ring; 1104, annular groove; 1105, end rod; 1106, protective cover; 1107, mill disc base; 1108, connecting arm; 1109, telescopic rod; 1110, side plate one; 1111, shaft one; 1112, first connecting rod; 1113, side plate two; 1114, shaft two; 1115, second connecting rod; 1116, side plate three; 1117, shaft three; 1118, connecting plate one; 1119, connecting plate two; 1120, partition plate; 1121, first interval groove; 1122, connecting block; 1123, second interval groove; 1124, brush head; 1125, guide rod; 1126, spring; 1127, guide hole; 1128, second motor; 1129, support circular table; 1130, bottom plate. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0020] The intelligent energy-saving coal mill provided in the embodiments of the present application will be described below in conjunction with Figures 1-11 .

[0021] Reference will be made to Figure 1 , Figure 2As shown, the intelligent energy-saving coal mill provided by the embodiment of the present application comprises a shell, a grinding roller 10, a grinding disc assembly 11 and a driving assembly. The shell comprises an upper shell 1 and a lower shell 12, the upper shell 1 is formed with an inner cavity, the upper shell 1 is provided with a feeding port 2, a pulverized coal outlet 3 and a hot air inlet 4 which are in communication with the inner cavity, the hot air inlet 4 is arranged at a position close to the lower end of the upper shell 1, and the feeding port 2 and the pulverized coal outlet 3 are both arranged at the upper end of the upper shell 1, wherein the feeding port 2 is located at the center and the pulverized coal outlet 3 is located around the feeding port 2. When the hot air is introduced into the coal mill, the air can be blown upward from the bottom of the grinding disc to the top, and the pulverized coal on the grinding disc assembly 11 is blown by the airflow to finally pass through the pulverized coal outlet 3.

[0022] The grinding roller 10 is installed in the upper shell 1 through a loading frame 9. The grinding disc assembly 11 is arranged in the upper shell 1, and the grinding disc assembly 11 is located below the grinding roller 10. The grinding disc assembly 11 is relatively rolled and rubbed with the roller surface of the grinding roller 10 through self-rotation, so as to crush the coal blocks on the grinding disc assembly 11 into powder.

[0023] Referring to Figure 3 , Figure 6 , Figure 7 As shown, in some embodiments, the grinding disc assembly 11 comprises a grinding disc outer ring 1101, a grinding disc inner ring 1102 and a grinding disc middle ring 1103, the grinding disc middle ring 1103 is located between the grinding disc outer ring 1101 and the grinding disc inner ring 1102, the grinding disc middle ring 1103 comprises a bottom plate 1130, a partition plate 1120 and a connecting block 1122, the partition plate 1120 and the connecting block 1122 are arranged on the bottom plate 1130 in a circumferential direction, the inner edge of the partition plate 1120 is connected with the grinding disc inner ring 1102, and the outer edge of the partition plate 1120 is connected with the grinding disc outer ring 1101.

[0024] The driving assembly is used for driving the connecting block 1122 to move to a first position or a second position. When the connecting block 1122 is located at the first position, the upper end surface of the connecting block 1122 is flush with the upper end surface of the partition plate 1120, at this time, the grinding roller 10 can normally grind the coal residue; when the connecting block 1122 is located at the second position, the upper end surface of the connecting block 1122 is lower than the upper end surface of the partition plate 1120, at this time, the grinding roller 10 can cut the coal residue, so that the large coal residue is quickly cut into small pieces.

[0025] Specifically, a first spacing groove 1121 is formed between the two adjacent partition plates 1120, and the inner wall of the first spacing groove 1121 is in clearance fit with the connecting block 1122; a second spacing groove 1123 is formed between the two adjacent connecting blocks 1122, and the inner wall of the second spacing groove is in clearance fit with the partition plate 1120.

[0026] Specifically, the upper end faces of the outer ring 1101 and the inner ring 1102 are higher than the upper end face of the middle ring 1103, so that the annular groove 1104 is formed between the outer ring 1101, the inner ring 1102 and the middle ring 1103. By arranging the roller of the grinding roller 10 in the annular groove 1104, the coal blocks will move into the annular groove 1104 under the action of the centrifugal force of the grinding disc assembly 11 and then be ground into coal powder by the grinding roller 10.

[0027] Referring to Figure 3 , Figure 4 , Figure 5 In some embodiments, the grinding disc assembly 11 further includes a grinding disc base 1107, the edge of the grinding disc base 1107 is provided with four connecting arms 1108, and four groups of driving assemblies are arranged between the connecting arms 1108 and the grinding disc assembly 11 in the circumferential direction. Each driving assembly includes a first connecting rod 1112, a second connecting rod 1115 and a telescopic rod 1109. One end of the first connecting rod 1112 is rotatably connected with the middle ring 1103, and the other end is rotatably connected with the outer ring 1101. One end of the second connecting rod 1115 is rotatably connected with the middle ring 1103, and the other end is rotatably connected with the inner ring 1102. One end of the telescopic rod 1109 is arranged on the grinding disc base 1107, and the other end is connected with the middle ring 1103. The telescopic rod 1109 adjusts the included angle between the first connecting rod 1112 and the second connecting rod 1115 by telescoping, so that the connecting block 1122 moves to the first position or the second position.

[0028] Specifically, the back of the outer ring 1101 is provided with two side plates one 1110, and the two side plates one 1110 are connected by a shaft one 1111. The back of the inner ring 1102 is provided with two side plates two 1113, and the two side plates two 1113 are connected by a shaft two 1114. The back of the middle ring 1103 is provided with two side plates three 1116, and the two side plates three 1116 are connected by a shaft three 1117. The two ends of the first connecting rod 1112 are respectively sleeved on the shaft one 1111 and the shaft three 1117, and the two ends of the second connecting rod 1115 are respectively sleeved on the shaft two 1114 and the shaft three 1117. At least one end of the first connecting rod 1112 and the second connecting rod 1115 is rotatably connected with the corresponding shaft through a long hole, which reserves space for the rotation of the first connecting rod 1112 and the second connecting rod 1115. The telescopic rod 1109 is an electric telescopic rod 1109, which is connected with the side plate three 1116 through a connecting plate one 1118 and a connecting plate two 1119.

[0029] When the telescopic rod 1109 moves downward, the first connecting rod 1112 and the second connecting rod 1115 move downward, and at this time, the connecting block 1122 moves downward, the upper end face of the connecting block 1122 is lower than the upper end face of the dividing plate 1120, and the grinding roller 10 can cut the coal cinder, so that the large coal cinder is quickly cut into small pieces.

[0030] The telescopic rod 1109 moves upward, pulling the first connecting rod 1112 and the second connecting rod 1115 upward. At this time, the connecting block 1122 moves upward and resets to the first position. The upper end face of the connecting block 1122 is flush with the upper end face of the dividing plate 1120. At this time, it cooperates with the grinding roller 10 to grind the coal slag normally.

[0031] Reference Figure 10 As shown, in some embodiments, the inner ring 1102 of the grinding disc includes a lower plate, an upper plate, and a supporting frustum 1129. The supporting frustum 1129 is located between the lower plate and the upper plate. A cleaning component is elastically connected along the circumference of the supporting frustum 1129. The supporting frustum 1129 generates centrifugal force through its rotation, causing the cleaning component to overcome the elastic force and move radially to the middle ring 1103 of the grinding disc to clean the middle ring 1103 of the grinding disc.

[0032] Reference Figure 7 , Figure 8 , Figure 9 As shown, in some specific embodiments, radially extending guide holes 1127 are uniformly formed on the side wall of the supporting frustum 1129. The cleaning component includes a guide rod 1125, an end rod 1105, and a spring 1126. One end of the guide rod 1125 slides against the inner wall of the guide hole 1127, and the other end extends radially outward. The end rod 1105 is sleeved on the end of the guide rod 1125 away from the supporting frustum 1129, and a brush head 1124 is provided on the end rod 1105. The spring 1126 is sleeved on the guide rod 1125, with one end abutting against the supporting frustum 1129 and the other end abutting against the end rod 1105. A second motor 1128 is installed on the upper plate. The second motor 1128 is connected to the supporting frustum 1129 and is used to drive the supporting frustum 1129 to rotate. A protective cover 1106 is provided around the second motor 1128.

[0033] When the rotational speed of the supporting frustum 1129 reaches a certain value, the centrifugal force on the guide rod 1125 overcomes the tension of the spring 1126. At this time, the resultant force of the centrifugal force and the tension of the spring 1126 will stretch the guide rod 1125 and cause the spring 1126 to change from a balanced state to a stretched state. When the guide rod 1125 continues to extend until it extends to the middle ring 1103 of the grinding disc, the brush head 1124 at the top of the end rod 1105 can clean the coal slag inside the middle ring 1103 of the grinding disc, which is beneficial to removing the coal slag accumulated in the middle ring 1103 of the grinding disc.

[0034] When the slag removal is completed, the rotation speed of the supporting frustum 1129 is reduced to a certain value. The centrifugal force on the guide rod 1125 is less than the tension of the spring 1126. At this time, the resultant force of the centrifugal force and the tension of the spring 1126 will shorten the guide rod 1125 and make the spring 1126 change from the stretched state to the balanced state, until the guide rod 1125 is retracted to its original state.

[0035] ReferenceFigure 11 As shown, in some embodiments, the system also includes a coal chute 6 and a separating plate 13. The upper end of the coal chute 6 is connected to the feed inlet 2, and the lower end extends towards the grinding disc assembly 11. The separating plates 13 are evenly arranged along the circumference of the coal chute 6, and an axially connected straight groove is formed between two adjacent separating plates 13. Specifically, the separating plates 13 have a frustum-shaped structure that is larger at the top and smaller at the bottom. When the airflow carries the coal powder to the separation process, the gaps between several separating plates 13 can block larger coal powder particles, while smaller coal powder particles can continue to move upward along the gaps between adjacent separating plates 13, thereby initially screening the larger coal powder particles.

[0036] In some embodiments, the system further includes a lower baffle 8 and an upper baffle 7. The lower baffle 8 is a concave annular shape located at the upper end of the separation plate 13, with its inner edge connected to the outer edge of the separation plate 13. The upper baffle 7 is a concave annular shape located above the lower baffle 8 and sleeved on the coal drop pipe 6. The outer diameter of the upper baffle 7 is larger than the inner diameter of the lower baffle 8 and smaller than the outer diameter of the lower baffle 8.

[0037] Specifically, the lower baffle 8 is located in the middle of the coal drop pipe 6. The inner wall of the lower baffle 8 is integrally connected to the top of the separation plate 13. The diameter of the lower baffle 8 is larger than that of the upper baffle 7. The concave part of the lower baffle 8 faces upward. The function of the lower baffle 8 in the middle of the coal drop pipe 6 is to block the pulverized coal particles a second time. By integrally connecting the inner wall of the lower baffle 8 to the top of the separation plate 13, when the pulverized coal passes through the separation plate 13 with the airflow, it is blocked by the lower baffle 8. When large pulverized coal particles fall back, they can slide along the arc of the inner wall of the lower baffle 8 onto the grinding disc assembly 11 and continue to be ground.

[0038] The upper baffle 7 is located in the upper middle section of the coal drop pipe 6. When the coal powder is carried to the upper shell 1 near the top by the hot air flow from the hot air inlet 4, it provides a third barrier to larger coal powder particles. Although fine coal powder particles stick to the inner surface of the upper baffle 7, the continuous hot air flow can carry these fine coal powder particles to the coal powder outlet 3. The concave opening of the upper baffle 7 faces downward to better block larger coal powder particles. The upper baffle 7 is set in the upper middle section of the coal drop pipe 6 to extend the movement path and time of the coal powder particles so as to better screen the coarse and fine coal powder particles.

[0039] The diameter of the lower baffle 8 is set to be larger than that of the upper baffle 7. When the airflow blows the coal powder through the separation plate 13, the upper baffle 7 and the lower baffle 8 cooperate. Specifically, the coal powder particles pass through the separation plate 13 and are blocked a second time by the upper baffle 7. The larger coal powder particles that fall back slide down along the upward concave surface of the lower baffle 8 onto the grinding disc assembly 11, thereby achieving the effect of three-stage screening of the coal powder.

[0040] In some embodiments, the first motor 5 is located at the bottom of the lower housing 12 and connected to the reducer 1414. The reducer 14 is connected to the lower plate for transmission. The first motor 5 can be started to provide power when the coal mill is working. The reducer 14 reduces the speed of the first motor 5 to meet the requirements of the production standard so that the coal mill can be used smoothly.

[0041] In some embodiments, the connecting block 1122 is a flexible material with good deformation effect. By setting the connecting block 1122 as a flexible material and cooperating with the dividing plate 1120, since the connecting block 1122 can be deformed, it can be stretched and deformed to increase the force-bearing area of ​​the slag when the slag is ground by the grinding roller 10, thereby achieving the effect of quickly cleaning the slag.

[0042] The workflow of this application: First, coal blocks enter through the feed inlet 2 and are transported to the grinding disc assembly 11 via the coal drop pipe 6. The first motor 5 is started, and the speed of the grinding disc assembly 11 is increased to the production standard through the reducer 14. The coal blocks falling on the grinding disc assembly 11 move into the annular groove 1104 due to centrifugal force. The coal blocks are ground into coal powder by the grinding roller 10 and the middle ring 1103 of the grinding disc. Hot air is introduced at the hot air inlet 4. The hot air flow carries the coal powder upward. The larger coal powder particles are blocked by the lower side of the lower baffle 8 and fall back into the grinding disc assembly 11 to continue to be ground. The coal powder is screened by the separation plate 13, passes through the gap of the separation plate 13 and continues to move upward. It is blocked a second time by the upper baffle 7 and finally flows to the coal powder outlet 3 and then into the combustion furnace.

[0043] When the slag accumulates too thickly in the middle ring 1103 of the grinding disc, the telescopic rod 1109 is activated to move downwards, pulling the connecting plate 1119, connecting plate 1118, side plate 1116, and shaft 1117 downwards. At this time, the inner end of the first connecting rod 1112 rotates clockwise around shaft 1117, and the second connecting rod 1115 rotates counterclockwise around shaft 1117. Simultaneously, the side plate 1116 drives the middle ring 1103 of the grinding disc to move downwards. At this time, the outer end of the first connecting rod 1112 rotates clockwise around shaft 1117, and the second connecting rod 1115 rotates counterclockwise around shaft 1117. At this time, the connecting block 1122 separates from the dividing plate 1120, and the dividing plate 1120 cuts the slag on the middle ring 1103 of the grinding disc.

[0044] The second motor 1128 is started, causing the supporting frustum 1129 to rotate, which in turn drives the guide rod 1125 to rotate. When the rotation speed of the supporting frustum 1129 reaches a certain value, the centrifugal force on the guide rod 1125 overcomes the tension of the spring 1126. At this time, the resultant force of the centrifugal force and the tension of the spring 1126 will stretch the guide rod 1125 and cause the spring 1126 to change from a balanced state to a stretched state. When the guide rod 1125 continues to extend to the middle ring 1103 of the grinding disc, the brush head 1124 on the end rod 1105 can clean the coal slag in the middle ring 1103 of the grinding disc, which is beneficial to removing the coal slag accumulated in the middle ring 1103 of the grinding disc.

[0045] When the coal slag is cleaned up, the telescopic rod 1109 is activated to move upward, pushing the connecting plate 1119, connecting plate 1118, side plate 1116, and shaft 1117 upward. At this time, the inner end of the first connecting rod 1112 rotates counterclockwise around shaft 1117, and the second connecting rod 1115 rotates clockwise around shaft 1117. At the same time, the side plate 1116 drives the grinding disc middle ring 1103 to move upward. At this time, the outer end of the first connecting rod 1112 rotates counterclockwise around shaft 1117, and the second connecting rod 1115 rotates clockwise around shaft 1117. At this time, the connecting block 1122 and the dividing plate 1120 are reassembled. At this time, the grinding roller 10 and the grinding disc assembly 11 can continue to grind the coal slag.

[0046] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An intelligent energy-saving coal mill, characterized in that, include: The outer shell has an internal cavity, and the outer shell has an inlet, a pulverized coal outlet and a hot air inlet that communicate with the internal cavity. A grinding roller, wherein the grinding roller is disposed in the content cavity; A grinding disc assembly is disposed in the inner cavity and located below the grinding roller. It rotates and rolls relative to the roller surface of the grinding roller. The grinding disc assembly includes spaced-apart dividing plates and connecting blocks. When the connecting block is in a first position, the upper end surface of the connecting block is flush with the upper end surface of the dividing plate. When the connecting block is in a second position, the upper end surface of the connecting block is lower than the upper end surface of the dividing plate. A driving component is used to drive the connecting block to move to the first position or the second position.

2. The intelligent energy-saving coal mill according to claim 1, characterized in that, The grinding disc assembly includes an outer ring, an inner ring, and a middle ring. The middle ring is located between the outer ring and the inner ring. The middle ring includes a base plate. The dividing plate and the connecting block are arranged circumferentially on the base plate. The inner edge of the dividing plate is connected to the inner ring, and the outer edge of the dividing plate is connected to the outer ring.

3. The intelligent energy-saving coal mill according to claim 2, characterized in that, A first gap groove is formed between two adjacent dividing plates, and the inner wall of the first gap groove is in clearance fit with the connecting block; a second gap groove is formed between two adjacent connecting blocks, and the inner wall of the second gap groove is in clearance fit with the dividing plate.

4. The intelligent energy-saving coal mill according to claim 2, characterized in that, The upper surfaces of the outer and inner rings of the grinding disc are both higher than the upper surface of the middle ring, forming an annular groove between the outer and inner rings and the middle ring.

5. The intelligent energy-saving coal mill according to claim 2, characterized in that, It also includes a grinding disc base, and the drive assembly is circumferentially disposed between the grinding disc base and the grinding disc assembly, each of the drive assemblies including: The first connecting rod has one end rotatably connected to the middle ring of the grinding disc and the other end rotatably connected to the outer ring of the grinding disc. The second connecting rod has one end rotatably connected to the middle ring of the grinding disc and the other end rotatably connected to the inner ring of the grinding disc. A telescopic rod, one end of which is mounted on the grinding disc base and the other end of which is connected to the middle ring of the grinding disc, allows the telescopic rod to adjust the angle between the first connecting rod and the second connecting rod by extending or retracting, thereby moving the connecting block to the first position or the second position.

6. The intelligent energy-saving coal mill according to any one of claims 2-5, characterized in that, The inner ring of the grinding disc includes a lower plate, an upper plate, and a supporting frustum. The supporting frustum is located between the lower plate and the upper plate. A cleaning component is elastically connected along the circumference of the supporting frustum. The supporting frustum generates centrifugal force through its rotation, causing the cleaning component to overcome the elastic force and move radially to the middle ring of the grinding disc to clean the middle ring of the grinding disc.

7. The intelligent energy-saving coal mill according to claim 6, characterized in that, The sidewall of the supporting frustum is uniformly provided with radially extending guide holes, and the cleaning component includes: A guide rod, one end of which is slidably engaged with the inner wall of the guide hole, and the other end extending radially outward; An end rod is sleeved on the end of the guide rod away from the supporting frustum, and a brush head is provided on the end rod; A spring is sleeved on the guide rod, with one end abutting against the supporting frustum and the other end abutting against the end rod.

8. The intelligent energy-saving coal mill according to any one of claims 2-5, characterized in that, Also includes: A coal chute, the upper end of which is connected to the feed inlet, and the lower end which extends toward the grinding disc assembly; Separating plates are evenly arranged along the circumference of the coal chute, and a straight groove is formed between two adjacent separating plates that are axially connected.

9. The intelligent energy-saving coal mill according to claim 8, characterized in that, Also includes: The lower baffle is a concave annular shape located at the upper end of the separating plate, and its inner edge is connected to the outer edge of the separating plate. The upper baffle is a concave annular shape located above the lower baffle and fitted onto the coal drop pipe. The outer diameter of the upper baffle is larger than the inner diameter of the lower baffle, which is smaller than the outer diameter of the lower baffle.

10. The intelligent energy-saving coal mill according to claim 6, characterized in that, Also includes: The first motor is connected to the lower plate and is used to drive the inner ring of the grinding disc to rotate; The second motor is mounted on the upper plate and is connected to the supporting frustum for driving the supporting frustum to rotate. A protective cover is installed around the second motor.

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