Millstone tile

Abstract

The utility model relates to the technical field of medium-speed mills, in particular to a millstone tile which comprises a millstone tile body, an abrasion sleeve detachably connected to the millstone tile body and an electric connecting piece used for connecting the abrasion sleeve and the millstone tile body, and the middle of the abrasion sleeve is a concave arc face. During use, the abrasion sleeve and the millstone tile body are loosened through the electric connecting piece, the abrasion sleeve can be detached and replaced, only the abrasion sleeve needs to be replaced, the whole abrasion body and the millstone tile body do not need to be detached and replaced, and detaching and replacing are easier and more convenient. According to the utility model, the millstone tile is simpler and more convenient to disassemble and replace, the maintenance and replacement time of the millstone tile is shortened, and the milling efficiency of the coal mill is improved.

Description

Technical Field

[0001] This utility model relates to the field of medium-speed mill technology, specifically to a mill disc tile. Background Technology

[0002] A coal mill is a device that uses grinding rollers and grinding discs to grind raw coal into coal powder of a certain fineness, while simultaneously drying and conveying the coal powder out of the mill. Its main components include a horizontally positioned grinding disc, grinding rollers supported by the disc, a power unit for rotating the disc, and a pneumatic conveying and supply system for the coal powder. The grinding disc is fitted with multiple sections of grinding disc tiles connected to form a circumference. Existing grinding disc tiles have concave arc surfaces to assist the grinding disc in its grinding operation. Over time, these concave arc surfaces wear down, requiring periodic disassembly and replacement of the grinding disc tiles. However, because most existing grinding disc tiles are cast in one piece, they are bulky and their arc-shaped shape makes lifting, disassembly, and replacement extremely difficult. This results in the coal mill needing to be shut down for extended periods to complete the maintenance and replacement of the grinding disc tiles, reducing the grinding efficiency of the coal mill. Summary of the Invention

[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing a grinding disc tile that makes disassembly and replacement of the grinding disc tile easier, shortens the maintenance and replacement time of the grinding disc tile, and improves the grinding efficiency of the coal mill.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A grinding disc tile includes a grinding disc tile body and a wear sleeve detachably connected to the grinding disc tile body, which is used to connect the wear sleeve and the grinding disc tile body by an electric connector, wherein the middle part of the wear sleeve is a concave arc surface;

[0006] One end of the concave arc surface extends horizontally to form an upper connecting part, and the other end of the concave arc surface extends downward to form a lower connecting part. The upper connecting part and the lower connecting part are connected by multiple sets of electric connectors. Each set of electric connectors includes an internal threaded hole 1 provided on the upper connecting part or the lower connecting part, a housing embedded in the grinding disc body, an internal threaded hole 2 provided in the housing, a bolt rotatably connected in the internal threaded hole 2, a drive assembly installed in the housing, and a remote control used for communication connection of the drive assembly. The drive assembly is used to drive the bolt to screw into or out of the internal threaded hole 1.

[0007] Furthermore, the drive assembly includes a controller, a battery, and an electric telescopic rod fixed inside the housing. The piston rod head of the electric telescopic rod extends into the second internal threaded hole and is provided with a movable seat. A rotary motor is provided inside the movable seat. The output end of the rotary motor passes through the movable seat and is connected to the bolt. The rotary motor, the electric telescopic rod, and the battery are all electrically connected to the controller. The controller includes a control module, a wireless charging module, and a communication module. The control module is used to control the rotary motor, the electric telescopic rod, and the battery. The wireless charging module is used to wirelessly charge the battery. The communication module is used to communicate with the remote control.

[0008] Furthermore, the bottom of the wear sleeve is provided with multiple positioning pins, and the main body of the grinding disc is provided with positioning holes that are adapted to the positioning pins. When the positioning pin is inserted into the positioning hole, the first internal thread hole and the second internal thread hole are aligned.

[0009] Furthermore, the outer diameter of the positioning post gradually decreases from the root upwards.

[0010] Furthermore, the upper connecting part and the lower connecting part are respectively provided with grooves, and a connecting post is fixed in the groove.

[0011] The beneficial effects of this utility model are:

[0012] In practical applications, the wear sleeve can be removed and replaced by loosening it from the main body of the grinding disc using an electric connector. Only the wear sleeve needs to be replaced, without having to remove and replace the entire wear body and the main body of the grinding disc, making disassembly and replacement much simpler. This invention makes the disassembly and replacement of the grinding disc easier, shortens the maintenance and replacement time of the grinding disc, and improves the grinding efficiency of the coal mill. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a top view of the present invention;

[0015] Figure 3 yes Figure 2 Sectional view at point AA;

[0016] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle. Detailed Implementation

[0017] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a grinding disc tile includes a grinding disc tile body 1 and a wear sleeve 2 detachably connected to the grinding disc tile body 1. An electric connector is used to connect the wear sleeve 2 and the grinding disc tile body 1. The middle part of the wear sleeve 2 is a concave arc surface 21.

[0018] In use, the wear sleeve 2 can be loosened from the grinding disc body 1 by using the electric connector, and the wear sleeve 2 can be removed and replaced. Only the wear sleeve 2 needs to be replaced, without having to remove and replace the entire wear body and the grinding disc body 1, making disassembly and replacement simpler. This utility model makes the disassembly and replacement of the grinding disc easier, shortens the maintenance and replacement time of the grinding disc, and improves the grinding efficiency of the coal mill.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, one end of the concave arc surface 21 extends horizontally to form an upper connecting part, and the other end of the concave arc surface 21 extends downward to form a lower connecting part. The upper connecting part and the lower connecting part are connected by multiple sets of electric connectors. Each set of electric connectors includes an internal threaded hole 31 provided on the upper connecting part or the lower connecting part, a housing 32 embedded in the grinding disc body 1, an internal threaded hole 33 provided in the housing 32, a bolt 34 rotatably connected in the internal threaded hole 33, a drive assembly installed in the housing 32, and a remote control used for communication connection of the drive assembly. The drive assembly is used to drive the bolt 34 to screw into or out of the internal threaded hole 31. In this embodiment, the drive assembly is controlled by the remote control, and the bolt 34 is driven to screw out from the housing 32 and into the internal threaded hole 31 to connect the wear sleeve 2 to the grinding disc body 1.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the drive assembly includes a controller 351, a battery 352, and an electric telescopic rod 353 fixed inside the housing 32. The piston rod head of the electric telescopic rod 353 extends into the internal threaded hole 33 and is provided with a movable seat 354. A rotary motor 355 is provided inside the movable seat 354. The output end of the rotary motor 355 passes through the movable seat 354 and is connected to the bolt 34. The rotary motor 355, the electric telescopic rod 353, and the battery 352 are all electrically connected to the controller 351. The controller 351 includes a control module, a wireless charging module, and a communication module. The communication module is used to control the rotary motor 355, the electric telescopic rod 353, and the battery 352. The wireless charging module is used to wirelessly charge the battery 352. The communication module is used to communicate with the remote control. In this embodiment, the remote control controls the rotary motor 355 and the electric telescopic rod 353 through the communication module and the control module. The electric telescopic rod 353 drives the movable seat 354 to extend, while the rotary motor 355 drives the bolt 34 to rotate, so that the bolt 34 is screwed into or out of the internal threaded hole 31 from the internal threaded hole 2 33, connecting the grinding disc body 1 to the wear sleeve 2.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the bottom of the wear sleeve 2 is provided with multiple positioning pins 22, and the grinding disc body 1 is provided with positioning holes 11 that are adapted to the positioning pins 22. When the positioning pins 22 are inserted into the positioning holes 11, the first internal thread hole 31 and the second internal thread hole 33 are directly opposite each other. In this embodiment, the positioning pins 22 are inserted into the positioning holes 11 to position the first internal thread hole 31 and the second internal thread hole 33.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the outer diameter of the positioning post 22 gradually decreases from the root upwards; in this embodiment, when the outer diameter of the positioning post 22 gradually decreases from the root upwards, the positioning post 22 is easier to insert into the positioning hole 11, and the installation of the wear sleeve 2 is more time-saving.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the upper connecting part and the lower connecting part are respectively provided with grooves 12, and a connecting post 13 is fixed in the groove 12. In this embodiment, after the grinding disc is removed, the groove 12 of the lower connecting part is exposed. After the electric connector loosens the wear sleeve 2 from the grinding disc body 1, the hoisting rope on the hoisting equipment is connected to the connecting post 13 of the upper connecting part and the connecting post 13 of the lower connecting part respectively, and the wear sleeve 2 can be easily removed.

[0024] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.

Claims

1. A millstone tile, characterized in that: Includes a grinding disc body, a wear sleeve detachably connected to the grinding disc body, and an electric connector used to connect the wear sleeve and the grinding disc body. The middle part of the wear sleeve is a concave arc surface. One end of the concave arc surface extends horizontally to form an upper connecting part, and the other end of the concave arc surface extends downward to form a lower connecting part. The upper connecting part and the lower connecting part are connected by multiple sets of electric connectors. Any set of the electric connectors includes an internal threaded hole 1 disposed on the upper or lower connecting part, a housing embedded in the grinding disc body, an internal threaded hole 2 disposed in the housing, a bolt rotatably connected in the internal threaded hole 2, a drive assembly installed in the housing, and a remote control used for communication connection of the drive assembly, wherein the drive assembly is used to drive the bolt to screw into or out of the internal threaded hole 1.

2. A millstone tile according to claim 1, characterized in that, The drive assembly includes a controller, a battery, and an electric telescopic rod fixed inside the housing. The piston rod head of the electric telescopic rod extends into the second internal threaded hole and is provided with a movable seat. A rotary motor is provided inside the movable seat. The output end of the rotary motor passes through the movable seat and is connected to the bolt. The rotary motor, the electric telescopic rod, and the battery are all electrically connected to the controller. The controller includes a control module, a wireless charging module, and a communication module. The control module is used to control the rotary motor, the electric telescopic rod, and the battery. The wireless charging module is used to wirelessly charge the battery. The communication module is used to communicate with the remote control.

3. A millstone tile according to claim 2, characterized in that, The bottom of the wear sleeve is provided with multiple positioning pins, and the main body of the grinding disc is provided with positioning holes that are adapted to the positioning pins. When the positioning pins are inserted into the positioning holes, the first internal thread hole and the second internal thread hole are aligned.

4. A millstone tile according to claim 3, characterized in that, The outer diameter of the positioning post gradually decreases from the root upwards.

5. A millstone tile according to claim 1, characterized in that, The upper connecting part and the lower connecting part are respectively provided with grooves, and a connecting post is fixed in the groove.

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