Dynamic and static ring structure of coal mill

Abstract

The invention relates to the technical field of coal mills, and discloses a coal mill dynamic and static ring structure which comprises a dismounting mechanism, a fixing mechanism is arranged at the bottom of the dismounting mechanism, a cooling mechanism is arranged on the right side of the dismounting mechanism, and the bottom of the cooling mechanism is fixedly connected with the fixing mechanism; the dismounting mechanism comprises a coal grinding barrel, a static ring is arranged in the coal grinding barrel, an extension plate is fixedly connected to the bottom of the static ring, an insertion ring is fixedly connected to the bottom of the extension plate, a connecting ring is fixedly connected to the bottom of the inner wall of the coal grinding barrel, an insertion groove is formed in the connecting ring, and the insertion groove is matched with the insertion ring. According to the dynamic and static ring structure of the coal mill, the structure is fixed in the connecting ring at the bottom of the inner wall of the coal milling barrel through the inserting ring at the bottom of the extending plate at the bottom of the static ring, and the problems that a gap between the dynamic ring structure and the static ring structure is increased due to abrasion, and structure operation is affected are solved; and the internal movable and static rings are inconvenient to check or replace.

Description

Technical Field

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

[0002] Coal mill is a machine that crushes coal blocks and grinds them into coal powder. It is an important auxiliary equipment for coal powder furnace. The coal grinding process is the process of coal being crushed and its surface area increasing continuously. To increase the new surface area, the binding force between solid molecules must be overcome, which requires energy consumption. Coal is ground into coal powder in the coal mill, mainly through three methods: crushing, crushing and grinding. Among them, the crushing process consumes the least energy. The grinding process consumes the most energy. Various coal mills have two or three of the above methods in the pulverizing process, but which one is the main one depends on the type of coal mill. Among them, the dynamic and static rings in the coal mill are important components of the internal structure of the coal mill. The dynamic and static rings usually refer to the combined structure between the rotating parts (dynamic rings) and the stationary parts (stationary rings) inside the coal mill. The dynamic ring is generally made of wear-resistant materials and rotates with the operation of the coal mill; the stationary ring is fixed to the shell or other stationary parts of the coal mill. The gap and matching accuracy between the two are crucial to the grinding effect of coal powder and the operating stability of the coal mill.

[0003] After the existing coal mill has been in use for a period of time, the gap between the dynamic and static ring structures will increase due to wear, affecting the operation of the structure. During regular maintenance and disassembly and repair, it is not convenient to check or replace the internal dynamic and static rings. In addition, the heat generated by the dynamic and static ring structures when the machine is running at high speed will affect the staff to check or replace the structure in the first time, and will also cause the wear rate to accelerate during operation.

[0004] Therefore, a coal mill dynamic and static ring structure is urgently needed. Summary of the invention

[0005] The object of the present invention is to provide a moving and static ring structure of a coal mill to solve the problem proposed in the above background technology that the gap between the moving and static ring structures will increase due to wear, affecting the operation of the structure, and it is not convenient to check or replace the internal moving and static rings during regular maintenance and disassembly and repair. The heat generated by the moving and static ring structure when the machine is running at high speed will affect the staff to check or replace the structure at the first time, and will also lead to the problem of accelerated wear speed during operation.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a coal mill moving and stationary ring structure, comprising a disassembly mechanism, a fixing mechanism is arranged at the bottom of the disassembly mechanism, a cooling mechanism is arranged on the right side of the disassembly mechanism, and the bottom of the cooling mechanism is fixedly connected to the fixing mechanism; The disassembly mechanism comprises a coal grinding barrel, a static ring is arranged inside the coal grinding barrel, an extension plate is fixedly connected to the bottom of the static ring, an insert ring is fixedly connected to the bottom of the extension plate, a connecting ring is fixedly connected to the bottom of the inner wall of the coal grinding barrel, a slot is provided inside the connecting ring, and the slot is adapted to the insert ring; The fixing mechanism comprises a bottom plate, a transmission device is fixedly connected to the top of the bottom plate, an insertion block is fixedly connected to the outer wall of the coal grinding barrel, a fixing block is fixedly connected to the top of the transmission device, a slot is provided inside the fixing block, and the slot is adapted to the insertion block.

[0007] Preferably, a wear-resistant ring is fixedly connected inside the static ring, a dynamic ring is arranged inside the wear-resistant ring, a dynamic-static gap is arranged between the wear-resistant ring and the dynamic ring, a sealing ring is fixedly connected inside the dynamic ring, and a grinding disc is fixedly connected inside the sealing ring.

[0008] Preferably, a first cross bolt is provided on the outer top of the coal grinding barrel, and a plurality of the first cross bolts are provided, and the bolt bottoms of the plurality of the first cross bolts movably penetrate the surface of the coal grinding barrel and extend to the inside of the static ring.

[0009] Preferably, a second cross bolt is provided at the outer bottom of the coal grinding barrel, and a plurality of the second cross bolts are provided, and the bolt bottoms of the plurality of the second cross bolts movably penetrate the surface of the coal grinding barrel and extend to the inside of the extension plate.

[0010] Preferably, a plurality of the fixing blocks are provided, the plurality of the fixing blocks are arranged in a ring array, and the plurality of the card slots are all adapted to the plug-in blocks.

[0011] Preferably, a fixing ring is fixedly connected to the outer bottom of the coal grinding barrel, a first plug hole is opened inside the fixing ring, a second plug hole is opened on the top of the transmission device, a plug column is installed in the first plug hole, and the second plug hole is adapted to the plug column.

[0012] Preferably, an output port is provided at the top of the transmission device, a transmission rod is provided at the bottom of the grinding disc, and the bottom of the transmission rod is adapted to the output port.

[0013] Preferably, the cooling mechanism includes a heat sink, the outer side of the heat sink is fixedly connected to the coal grinding barrel, a plurality of heat sinks are provided, and the plurality of heat sinks are arranged in a circular array with the coal grinding barrel as the center, and the outer sides of the plurality of heat sinks are all fixedly connected to the same heat transfer ring.

[0014] Preferably, an air cooler is provided on the right side of the heat transfer ring, a support column is fixedly connected to the bottom of the air cooler, a plurality of support columns are provided, and the plurality of support columns are arranged in a rectangular array, an operation screen is fixedly connected to the front of the air cooler, an air blowing port is provided on the left side of the air cooler, a air blowing plate is installed in the air blowing port, an exhaust port is provided on the right side of the air cooler, and an exhaust fan is installed in the exhaust port.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: First, the present invention fixes the structure in the connecting ring at the bottom of the inner wall of the coal mill barrel through the insert ring at the bottom of the extension plate at the bottom of the static ring, fixes the transmission device through the bottom plate, and fixes the coal mill barrel to the top of the transmission device by inserting the insert block into the interior of the fixing block, thereby completing the preliminary fixation of the device, reducing wear with the wear-resistant ring between the dynamic ring and the static ring, reducing the power consumption of the primary fan through the dynamic and static gaps and the sealing ring, supporting the sealing ring through the grinding disc, and strengthening the fixation between the static ring and the extension plate and the coal mill barrel through multiple first cross bolts and second cross bolts on the outside of the coal mill barrel. When some of the bolts are loose, the other bolts can also be used to temporarily stabilize the mechanism to support it until the maintenance personnel arrive, thereby solving the problem that the gap between the dynamic and static ring structures will increase due to wear, affecting the operation of the structure, and it is inconvenient to check or replace the internal dynamic and static rings during regular maintenance and disassembly and repair.

[0016] Second, the present invention strengthens the stability of the preliminary structure by connecting a plurality of fixed blocks and plug blocks, and fixes the fixed ring and the transmission device together with a plug column through a first plug hole opened in the fixed ring, thereby ensuring the stability of the structure and facilitating disassembly during maintenance. The connection of the bottom of the grinding disc and the transmission rod completes the connection of the overall structure, further solving the problem of inconvenient disassembly and reducing maintenance costs.

[0017] Thirdly, the present invention shares the heat of the internal structure to the outside through the heat sink, and accelerates the heat dissipation speed through the large contact area between the multiple heat sinks and the air, and evenly disperses the heat of the multiple heat sinks through the heat transfer ring, and supports the air cooler with the support column on the bottom plate, and blows the cold air to the heat transfer ring and the heat sink through the air blower plate to accelerate the cooling speed, and facilitates the switch and temperature control through the operation screen. The exhaust fan can prevent the exhausted hot air from affecting the heat dissipation, and the overall temperature of the internal structure is reduced without affecting the internal airflow and structure, which solves the problem that the heat generated by the dynamic and static ring structures when the machine is running at high speed will affect the staff to check or replace the structure at the first time, and will also lead to the accelerated wear rate during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front perspective schematic diagram of the structure of the present invention; Figure 2 It is a front perspective schematic diagram of the structural disassembly mechanism of the present invention; Figure 3 This is a front view schematic diagram of the disassembly mechanism of the structure of the present invention; Figure 4 It is a front perspective schematic diagram of the structural fixing mechanism of the present invention; Figure 5 This is a front view disassembly schematic diagram of the structural fixing mechanism of the present invention; Figure 6 This is a front view stereoscopic schematic diagram of the cooling mechanism of the structure of the present invention; Figure 7 It is a rear perspective schematic diagram of the cooling mechanism of the structure of the present invention.

[0019] Among them: 1. disassembly mechanism; 2. fixing mechanism; 3. cooling mechanism; 101. coal grinding barrel; 102. static ring; 103. wear-resistant ring; 104. dynamic ring; 105. dynamic and static clearance; 106. sealing ring; 107. grinding disc; 108. extension plate; 109. plug ring; 110. connecting ring; 111. first cross bolt; 112. second cross bolt; 201. bottom plate; 202. transmission; 203. plug block; 204. fixing block; 205. fixing ring; 206. plug column; 207. transmission rod; 301. heat sink; 302. heat transfer ring; 303. support column; 304. air cooler; 305. operating screen; 306. blowing plate; 307. exhaust fan. DETAILED DESCRIPTION

[0020] 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.

[0021] The present invention provides the following technical solutions: Embodiment 1 An embodiment of a disassembly structure in a coal mill moving and stationary ring structure See also Figure 1 , Figure 2 , Figure 3 , a fixing mechanism 2 is provided at the bottom of the disassembly mechanism 1, a cooling mechanism 3 is provided on the right side of the disassembly mechanism 1, and the bottom of the cooling mechanism 3 is fixedly connected to the fixing mechanism 2; The disassembly mechanism 1 includes a coal grinding barrel 101, a stationary ring 102 is arranged inside the coal grinding barrel 101, an extension plate 108 is fixedly connected to the bottom of the stationary ring 102, an insert ring 109 is fixedly connected to the bottom of the extension plate 108, a connecting ring 110 is fixedly connected to the bottom of the inner wall of the coal grinding barrel 101, a slot is opened inside the connecting ring 110, and the slot is adapted to the insert ring 109.

[0022] A wear-resistant ring 103 is fixedly connected inside the stationary ring 102, a moving ring 104 is arranged inside the wear-resistant ring 103, a dynamic-static gap 105 is arranged between the wear-resistant ring 103 and the moving ring 104, a sealing ring 106 is fixedly connected inside the moving ring 104, and a grinding disc 107 is fixedly connected inside the sealing ring 106.

[0023] A first cross bolt 111 is disposed on the outer top of the coal grinding barrel 101 . A plurality of first cross bolts 111 are disposed. Bolt bottoms of the plurality of first cross bolts 111 movably penetrate the surface of the coal grinding barrel 101 and extend to the interior of the stationary ring 102 .

[0024] A second cross bolt 112 is disposed at the outer bottom of the coal grinding barrel 101 . A plurality of second cross bolts 112 are disposed. The bolt bottoms of the plurality of second cross bolts 112 movably penetrate the surface of the coal grinding barrel 101 and extend to the inside of the extension plate 108 .

[0025] Through the above technical solution, the structure is fixed in the connecting ring 110 at the bottom of the inner wall of the coal grinding barrel 101 through the insert ring 109 at the bottom of the extension plate 108 at the bottom of the static ring 102, the transmission device 202 is fixed through the bottom plate 201, and the coal grinding barrel 101 is fixed to the top of the transmission device 202 by inserting the insert block 203 into the interior of the fixed block 204, completing the preliminary fixation of the device, using the wear-resistant ring 103 between the dynamic ring 104 and the static ring 102 to reduce wear, and reducing the power consumption of the primary fan through the dynamic and static gap 105 and the sealing ring 106 The sealing ring 106 is supported by the grinding disc 107, and the fixation between the static ring 12 and the extension plate 108 and the coal grinding barrel 101 is strengthened through multiple first cross bolts 111 and second cross bolts 112 on the outside of the coal grinding barrel 101. When some bolts are loose, the mechanism can be temporarily stabilized by other bolts to support it until the maintenance personnel arrive. This solves the problem that the gap between the dynamic and static ring structures will increase due to wear, affecting the operation of the structure, and it is inconvenient to check or replace the internal dynamic and static rings during regular maintenance and disassembly and repair.

[0026] Embodiment 2 An embodiment of a fixing mechanism in a moving and stationary ring structure of a coal mill See also Figure 4 , Figure 5 The fixing mechanism 2 includes a bottom plate 201, a transmission device 202 is fixedly connected to the top of the bottom plate 201, an insert block 203 is fixedly connected to the outer wall of the coal grinding barrel 101, a fixing block 204 is fixedly connected to the top of the transmission device 202, and a slot is provided inside the fixing block 204, which is adapted to the insert block 203; There are multiple fixing blocks 204 , which are arranged in a ring array, and the multiple slots are all adapted to the inserting blocks 203 .

[0027] A fixing ring 205 is fixedly connected to the outer bottom of the coal grinding barrel 101, a first plug hole is provided inside the fixing ring 205, a second plug hole is provided on the top of the transmission device 202, a plug post 206 is installed in the first plug hole, and the second plug hole is adapted to the plug post 206.

[0028] An output port is provided at the top of the transmission device 202, and a transmission rod 207 is provided at the bottom of the grinding disc 107, and the bottom of the transmission rod 207 is adapted to the output port.

[0029] Through the above technical solution, the stability of the preliminary structure is enhanced by connecting multiple fixed blocks 204 and plug blocks 203. The fixed ring 205 and the transmission device 202 are fixed together by the plug column 206 through the first plug hole opened in the fixed ring 205, which ensures the stability of the structure and facilitates disassembly during maintenance. The connection of the bottom of the grinding disc 107 and the transmission rod 207 completes the connection of the overall structure, further solves the problem of inconvenient disassembly, and reduces maintenance costs.

[0030] Embodiment 3 An embodiment of a cooling mechanism in a moving and stationary ring structure of a coal mill See also Figure 6 , Figure 7 The cooling mechanism 3 includes a heat sink 301, the outer side of the heat sink 301 is fixedly connected to the coal grinding barrel 101, a plurality of heat sinks 301 are provided, and the plurality of heat sinks 301 are arranged in a ring array with the coal grinding barrel 101 as the center, and the outer sides of the plurality of heat sinks 301 are all fixedly connected to the same heat transfer ring 302.

[0031] A cooler 304 is arranged on the right side of the heat transfer ring 302, and a support column 303 is fixedly connected to the bottom of the cooler 304. There are multiple support columns 303, and the multiple support columns 303 are arranged in a rectangular array. An operation screen 305 is fixedly connected to the front of the cooler 304, and a blowing port is opened on the left side of the cooler 304, and a blowing plate 306 is installed in the blowing port. An exhaust port is opened on the right side of the cooler 304, and an exhaust fan 307 is installed in the exhaust port.

[0032] Through the above technical scheme, the heat of the internal structure is shared outside through the heat sink 301, and the heat dissipation speed is accelerated through the large contact area between the multiple heat sinks 301 and the air, the heat of the multiple heat sinks 301 is evenly dispersed through the heat transfer ring 302, the air cooler 304 is supported by the support column 303 on the bottom plate 201, and the cold air is blown to the heat transfer ring 302 and the heat sink 301 through the blowing plate 306 of the air cooler 304 to accelerate the cooling speed, and the switch and temperature control are convenient through the operation screen 305. The exhaust fan 307 can prevent the exhausted hot air from affecting the heat dissipation, and the overall temperature of the internal structure is reduced without affecting the internal airflow and structure. The problem that the heat generated by the dynamic and static ring structures when the machine is running at high speed will affect the staff to check or replace the structure at the first time, and will also lead to accelerated wear during operation is solved.

[0033] When in use, the structure is fixed in the connecting ring 110 at the bottom of the inner wall of the coal grinding barrel 101 through the insert ring 109 at the bottom of the extension plate 108 at the bottom of the static ring 102, the transmission device 202 is fixed through the bottom plate 201, and the coal grinding barrel 101 is fixed to the top of the transmission device 202 by inserting the insert block 203 into the interior of the fixing block 204, completing the preliminary fixation of the device, using the wear-resistant ring 103 between the dynamic ring 104 and the static ring 102 to reduce wear, and reducing the power consumption of the primary fan through the dynamic and static gap 105 and the sealing ring 106. The sealing ring 106 is supported by the grinding disc 107, and the fixation between the static ring 12 and the extension plate 108 and the coal grinding barrel 101 is strengthened through the multiple first cross bolts 111 and the second cross bolts 112 on the outside of the coal grinding barrel 101. When some bolts are loose, other bolts can be used to temporarily stabilize the mechanism and support it until the maintenance personnel arrive. This solves the problem that the gap between the dynamic and static ring structures will increase due to wear, affecting the operation of the structure, and it is inconvenient to check or replace the internal dynamic and static rings during regular maintenance and disassembly and repair. The stability of the preliminary structure is strengthened by connecting multiple fixed blocks 204 and plug blocks 203. The fixed ring 205 and the transmission device 202 are fixed together by the plug column 206 through the first plug hole opened in the fixed ring 205, which ensures the stability of the structure while facilitating disassembly during maintenance. The connection between the bottom of the grinding disc 107 and the transmission rod 207 completes the connection of the overall structure, further solving the problem of inconvenient disassembly and reducing maintenance costs. The heat of the internal structure is shared externally through the heat sink 301, and the heat dissipation speed is accelerated through the large contact area between the multiple heat sinks 301 and the air, and the heat transfer ring 302 is used to evenly disperse the heat of the multiple heat sinks 301. The support column 303 on the bottom plate 201 supports the air cooler 304, and the cold air is blown to the heat transfer ring 302 and the heat sink 301 through the blowing plate 306 of the air cooler 304 to accelerate the cooling speed. The operation screen 305 is used to facilitate switching and temperature control. The exhaust fan 307 can prevent the exhausted hot air from affecting the heat dissipation. The overall temperature of the internal structure is reduced without affecting the internal airflow and structure, and the problem that the heat generated by the dynamic and static ring structures when the machine is running at high speed will affect the staff to check or replace the structure at the first time, and will also cause the wear rate to accelerate during operation is solved.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal mill moving and stationary ring structure, comprising a disassembly mechanism (1), characterized in that: A fixing mechanism (2) is provided at the bottom of the disassembly mechanism (1), a cooling mechanism (3) is provided on the right side of the disassembly mechanism (1), and the bottom of the cooling mechanism (3) is fixedly connected to the fixing mechanism (2); The disassembly mechanism (1) comprises a coal grinding bucket (101), a stationary ring (102) is arranged inside the coal grinding bucket (101), an extension plate (108) is fixedly connected to the bottom of the stationary ring (102), an insert ring (109) is fixedly connected to the bottom of the extension plate (108), a connecting ring (110) is fixedly connected to the bottom of the inner wall of the coal grinding bucket (101), a slot is provided inside the connecting ring (110), and the slot is matched with the insert ring (109); The fixing mechanism (2) comprises a bottom plate (201), a transmission device (202) is fixedly connected to the top of the bottom plate (201), an insert block (203) is fixedly connected to the outer wall of the coal grinding barrel (101), a fixing block (204) is fixedly connected to the top of the transmission device (202), and a slot is provided inside the fixing block (204), the slot being adapted to fit the insert block (203).

2. A coal mill moving and stationary ring structure according to claim 1, characterized in that: A wear-resistant ring (103) is fixedly connected to the interior of the stationary ring (102), a moving ring (104) is arranged inside the wear-resistant ring (103), a moving-static gap (105) is arranged between the wear-resistant ring (103) and the moving ring (104), a sealing ring (106) is fixedly connected to the interior of the moving ring (104), and a grinding disc (107) is fixedly connected to the interior of the sealing ring (106).

3. The coal mill moving and stationary ring structure according to claim 1, characterized in that: A first cross bolt (111) is provided on the outer top of the coal grinding barrel (101), and a plurality of the first cross bolts (111) are provided, and the bolt bottoms of the plurality of the first cross bolts (111) movably penetrate the surface of the coal grinding barrel (101) and extend to the interior of the stationary ring (102).

4. The coal mill moving and stationary ring structure according to claim 1, characterized in that: A second cross bolt (112) is provided at the outer bottom of the coal grinding barrel (101), and a plurality of the second cross bolts (112) are provided, and the bolt bottoms of the plurality of second cross bolts (112) movably penetrate the surface of the coal grinding barrel (101) and extend to the interior of the extension plate (108).

5. The coal mill moving and stationary ring structure according to claim 1, characterized in that: A plurality of the fixing blocks (204) are provided, and the plurality of the fixing blocks (204) are arranged in a ring array, and the plurality of the card slots are all adapted to the insertion blocks (203).

6. The coal mill moving and stationary ring structure according to claim 1, characterized in that: A fixing ring (205) is fixedly connected to the outer bottom of the coal grinding barrel (101), a first plug hole is provided inside the fixing ring (205), a second plug hole is provided on the top of the transmission device (202), a plug post (206) is installed in the first plug hole, and the second plug hole is adapted to fit the plug post (206).

7. The coal mill moving and stationary ring structure according to claim 2, characterized in that: An output port is provided at the top of the transmission device (202), and a transmission rod (207) is provided at the bottom of the grinding disc (107), wherein the bottom of the transmission rod (207) is adapted to the output port.

8. The coal mill moving and stationary ring structure according to claim 1, characterized in that: The cooling mechanism (3) comprises a heat sink (301), the outer side of the heat sink (301) being fixedly connected to the coal grinding barrel (101), a plurality of the heat sinks (301) being provided, the plurality of heat sinks (301) being arranged in a ring array with the coal grinding barrel (101) as the center, and the outer sides of the plurality of heat sinks (301) being fixedly connected to the same heat transfer ring (302).

9. The coal mill moving and stationary ring structure according to claim 8, characterized in that: An air cooler (304) is arranged on the right side of the heat transfer ring (302), a support column (303) is fixedly connected to the bottom of the air cooler (304), a plurality of the support columns (303) are arranged, and the plurality of the support columns (303) are arranged in a rectangular array, an operation screen (305) is fixedly connected to the front of the air cooler (304), an air blowing port is provided on the left side of the air cooler (304), an air blowing plate (306) is installed in the air blowing port, and an exhaust port is provided on the right side of the air cooler (304), an exhaust fan (307) is installed in the exhaust port.

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