Composite lining plate of medium-speed coal mill

Abstract

The utility model discloses a composite lining plate of a medium-speed coal mill, which relates to the technical field of medium-speed coal mill structures, and comprises a coal milling component arranged in the coal mill, a locking component is arranged on the outer wall of a milling disc, and the locking component comprises a locking column, a U-shaped block, a locking strip and a spring. Through the arrangement of the locking assembly, when the lining plate needs to be installed, only the lining plate needs to be placed on the top of the grinding disc, the locking column slides into the grinding disc, after the locking column and the locking bar are connected in a clamped mode, the spring pushes the locking bar to enable the locking bar not to slide reversely, sliding of the locking column is limited through the outer wall of the locking bar, and therefore rapid installation of the lining plate is achieved. When the composite layer is seriously abraded and the lining plate needs to be replaced, the lining plate can be taken down only by pulling the locking bar to enable the locking bar to be separated from the locking column and extrude the spring, meanwhile, the lining plate is convenient to lock after being replaced due to the thrust of the spring to the locking bar, and the problem that the replacement efficiency of the composite lining plate is poor due to the adoption of a bolt or welding mode is solved through the matching of the parts.

Description

Technical Field

[0001] This utility model relates to the technical field of medium-speed coal mill structure, specifically to a composite liner for a medium-speed coal mill. Background Technology

[0002] Medium-speed coal mills refer to coal mills with a working speed of 50-300 revolutions per minute. They are auxiliary material preparation and processing equipment for blast furnace ironmaking. Medium-speed coal mills can provide suitable auxiliary materials—pulverized coal—for blast furnace ironmaking systems. Medium-speed coal mills consist of a shell, separator, inlet and outlet devices, hot air device, grinding roller device, reducer, and liners. Among them, the liners in medium-speed coal mills are responsible for protecting the grinding disc and enhancing the crushing effect of the grinding media on the coal.

[0003] To extend the service life of existing liners, ceramic wear-resistant plates or other materials are usually combined with metal base plates to form composite liners. The composite liners are usually fixed to the grinding disc by bolts or welding. However, this fixing method results in poor replacement efficiency when the composite liners need to be replaced. Utility Model Content

[0004] The purpose of this utility model is to provide a composite liner for medium-speed coal mills, in order to solve the problem of poor replacement efficiency of composite liners caused by the use of bolts or welding.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a composite liner for a medium-speed coal mill, comprising a coal milling assembly installed inside the coal mill, the coal milling assembly comprising a grinding disc, a liner, and a composite layer, the grinding disc being installed inside the coal mill, the liner being provided in multiples, the multiple liners being arranged circumferentially on the top of the outer wall of the grinding disc, the composite layer being fixedly connected to the top of the outer wall of the liner, and a locking assembly being provided on the outer wall of the grinding disc, the locking assembly comprising a locking post, a U-shaped block, a locking bar, and a spring;

[0006] Multiple locking pins are provided, arranged linearly and fixedly connected to the bottom of the outer wall of the liner. Each locking pin completely penetrates the grinding disc, and its outer wall is slidably connected to the grinding disc. The bottom of the outer wall of the locking pin is inclined. Multiple U-shaped blocks are provided, arranged circumferentially and fixedly connected to the bottom of the outer wall of the grinding disc. Multiple locking bars are provided, arranged circumferentially at the bottom of the outer wall of the grinding disc. The top of the outer wall of the locking bar is slidably connected to the bottom of the outer wall of the grinding disc. One end of the outer wall of the spring is fixedly connected to the outer wall of the locking bar, and the other end of the outer wall of the spring is connected to the outer wall of the U-shaped block.

[0007] As a further improvement of this utility model: the coal grinding assembly also includes a distribution plate;

[0008] The equalizing disc is fixedly connected to the top of the outer wall of the grinding disc, the axis of the equalizing disc coincides with the axis of the grinding disc, and the outer wall of the equalizing disc is tapered.

[0009] As a further improvement of this utility model: the coal grinding assembly also includes wear-resistant balls;

[0010] Multiple wear-resistant balls are provided, and the multiple wear-resistant balls are linearly arranged and fixedly connected to the top of the outer wall of the liner. By providing wear-resistant balls, the wear on the composite layer is reduced, and the service life of the liner and the composite layer is increased.

[0011] As a further improvement of this invention: the locking assembly also includes a sliding hole;

[0012] The sliding holes are provided in multiple ways, and are arranged in a circular pattern at the bottom of the outer wall of the grinding disc and extend to the top of the outer wall of the grinding disc. The outer wall of the locking pin is slidably connected to the inner wall of the sliding holes.

[0013] As a further improvement of this invention: the locking assembly also includes a slip ring;

[0014] Two slip rings are provided, and the inner wall diameters of the two slip rings are different. The top of the outer wall of the slip ring is slidably connected to the bottom of the outer wall of the grinding disc and the inner wall of the U-shaped block. The locking bar is fixedly connected to the two slip rings.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] By setting up a locking assembly, when the liner needs to be installed, simply place the liner on top of the grinding disc and slide the locking pin into the grinding disc. After the locking pin and the locking bar are engaged, the spring pushes the locking bar, preventing it from sliding in the opposite direction. The outer wall of the locking bar restricts the sliding of the locking pin, thus enabling quick installation of the liner. When the composite layer is severely worn and the liner needs to be replaced, simply pull the locking bar to disengage it from the locking pin and compress the spring to remove the liner. At the same time, the spring's pushing force on the locking bar facilitates locking after liner replacement. The cooperation of these parts solves the problem of poor efficiency in replacing composite liners caused by using bolts or welding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a bottom view of the locking component of this utility model;

[0019] Figure 3 This is a disassembly diagram of the coal grinding assembly of this utility model.

[0020] In the diagram: 1. Coal grinding assembly; 101. Grinding disc; 102. Distribution disc; 103. Liner; 104. Composite layer; 105. Wear-resistant ball; 2. Locking assembly; 201. Sliding hole; 202. Locking post; 203. U-shaped block; 204. Slip ring; 205. Locking bar; 206. Spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-3 In this embodiment of the utility model, the composite liner of the medium-speed coal mill includes a coal milling assembly 1 installed inside the coal mill. The coal milling assembly 1 includes a grinding disc 101, a liner 103, and a composite layer 104. The grinding disc 101 is installed inside the coal mill. Multiple liners 103 are provided and arranged in a circular pattern on the top of the outer wall of the grinding disc 101. The composite layer 104 is fixedly connected to the top of the outer wall of the liner 103. A locking assembly 2 is provided on the outer wall of the grinding disc 101. The locking assembly 2 includes a locking post 202, a U-shaped block 203, a locking bar 205, and a spring 206.

[0023] Multiple locking pins 202 are provided, and the multiple locking pins 202 are linearly arranged and fixedly connected to the bottom of the outer wall of the liner 103. The locking pins 202 completely penetrate the grinding disc 101. The outer wall of the locking pin 202 is slidably connected to the grinding disc 101. The bottom of the outer wall of the locking pin 202 is inclined. Multiple U-shaped blocks 203 are provided, and the multiple U-shaped blocks 203 are circumferentially arranged and fixedly connected to the bottom of the outer wall of the grinding disc 101. Multiple locking bars 205 are provided, and the multiple locking bars 205 are circumferentially arranged at the bottom of the outer wall of the grinding disc 101. The top of the outer wall of the locking bar 205 is slidably connected to the bottom of the outer wall of the grinding disc 101. One end of the outer wall of the spring 206 is fixedly connected to the outer wall of the locking bar 205, and the other end of the outer wall of the spring 206 is connected to the outer wall of the U-shaped block 203.

[0024] In this embodiment, it should be noted that the composite layer 104 is fixedly connected to the liner 103. When installing the liner 103, the composite layer 104 should be placed facing upwards.

[0025] When using the medium-speed coal mill assembly, if the liner 103 needs to be installed, simply place the liner 103 on top of the grinding disc 101, slide the locking pin 202 into the grinding disc 101, ensuring that the bottom of the outer wall of the locking pin 202 extends to the bottom of the outer wall of the grinding disc 101. As the locking pin 202 slides down, the inclined surface at the bottom of the locking pin 202 fits against the outer wall of the locking bar 205, pushing the locking bar 205 to slide. When the locking bar 205 slides, it compresses the spring 206. Then, the spring 206 releases, pushing the locking bar 205 to slide in the opposite direction and into the locking pin 202. The engagement between the outer wall of 205 and the bottom of the outer wall of the grinding disc 101 prevents the locking pin 202 from sliding in the opposite direction, thereby locking the liner 103. When the composite layer 104 is severely worn and the liner 103 needs to be replaced, simply pull the locking bar 205 to disengage it from the locking pin 202, and the liner 103 can be removed. Then, the spring 206 resets the thrust of the locking bar 205, making it convenient to replace the liner 103 later. The cooperation of the above parts solves the problem of poor replacement efficiency of the composite liner 103 caused by using bolts or welding.

[0026] Please refer to this carefully. Figure 1 The coal grinding assembly 1 also includes a distribution plate 102;

[0027] The equalizing disc 102 is fixedly connected to the top of the outer wall of the grinding disc 101. The axis of the equalizing disc 102 coincides with the axis of the grinding disc 101, and the outer wall of the equalizing disc 102 is tapered.

[0028] In this embodiment: By setting a distribution disk 102, which is fixedly connected to the top of the outer wall of the grinding disk 101, the axis of the distribution disk 102 coincides with the axis of the grinding disk 101, and the outer wall of the distribution disk 102 is conical, so that when coal blocks fall from the top of the coal mill to the top of the grinding disk 101, they will be distributed evenly to the top of the outer wall of the composite layer 104 by the distribution disk 102, thereby facilitating the grinding operation of the coal blocks.

[0029] Please refer to this carefully. Figure 1 The coal mill assembly 1 also includes wear-resistant balls 105;

[0030] Multiple wear-resistant balls 105 are provided, and the multiple wear-resistant balls 105 are linearly arranged and fixedly connected to the top of the outer wall of the liner 103. By providing wear-resistant balls 105, the wear on the composite layer 104 is reduced, and the service life of the liner 103 and the composite layer 104 is increased.

[0031] In this embodiment: by setting wear-resistant balls 105, and multiple wear-resistant balls 105 are provided, the multiple wear-resistant balls 105 are linearly arranged and fixedly connected to the top of the outer wall of the liner 103, so that the grinding roller will preferentially contact the outer wall of the wear-resistant balls 105, thereby reducing the wear on the composite layer 104 and increasing the service life of the liner 103 and the composite layer 104.

[0032] Please refer to this carefully. Figure 2 , Figure 3 The locking assembly 2 also includes a sliding hole 201;

[0033] Multiple sliding holes 201 are provided, and the multiple sliding holes 201 are arranged in a circle at the bottom of the outer wall of the grinding disc 101 and extend to the top of the outer wall of the grinding disc 101. The outer wall of the locking post 202 is slidably connected to the inner wall of the sliding hole 201.

[0034] In this embodiment: By setting sliding holes 201, multiple sliding holes 201 are arranged in a circular pattern at the bottom of the outer wall of the grinding disc 101 and extend to the top of the outer wall of the grinding disc 101. The outer wall of the locking pin 202 is slidably connected to the inner wall of the sliding holes 201, so that the locking pin 202 can penetrate the grinding disc 101, providing a basis for restricting the sliding of the locking pin 202 by the locking bar 205 and the outer wall of the grinding disc 101.

[0035] Please refer to this carefully. Figure 2 , Figure 3 The locking assembly 2 also includes a slip ring 204;

[0036] There are two slip rings 204, and the inner diameters of the two slip rings 204 are different. The top of the outer wall of the slip ring 204 is slidably connected to the bottom of the outer wall of the grinding disc 101 and the inner wall of the U-shaped block 203. The locking bar 205 is fixedly connected to the two slip rings 204.

[0037] In this embodiment: by setting slip rings 204, the inner diameters of the two slip rings 204 are different, the top of the outer wall of the slip ring 204 is slidably connected to the bottom of the outer wall of the grinding disc 101 and the inner wall of the U-shaped block 203, and the locking bar 205 is fixedly connected to the two slip rings 204, so that multiple locking bars 205 can slide synchronously, thereby simplifying the operation of the staff to install and remove the liner 103 and improving the efficiency of liner 103 replacement.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A composite liner for a medium-speed coal mill, comprising a coal mill assembly (1) installed inside the coal mill, the coal mill assembly (1) comprising a grinding disc (101), a liner (103), and a composite layer (104), the grinding disc (101) being installed inside the coal mill, the liner (103) being provided in multiples, the multiple liner (103) being arranged circumferentially on the top of the outer wall of the grinding disc (101), and the composite layer (104) being fixedly connected to the top of the outer wall of the liner (103), characterized in that, The outer wall of the grinding disc (101) is provided with a locking assembly (2), which includes a locking post (202), a U-shaped block (203), a locking bar (205), and a spring (206). Multiple locking pins (202) are provided, and the multiple locking pins (202) are linearly arranged and fixedly connected to the bottom of the outer wall of the liner (103). The locking pins (202) completely penetrate the grinding disc (101). The outer wall of the locking pin (202) is slidably connected to the grinding disc (101). The bottom of the outer wall of the locking pin (202) is inclined. Multiple U-shaped blocks (203) are provided, and the multiple U-shaped blocks (203) are circumferentially arranged and fixedly connected to the bottom of the outer wall of the grinding disc (101). Multiple locking bars (205) are provided, and the multiple locking bars (205) are circumferentially arranged at the bottom of the outer wall of the grinding disc (101). The top of the outer wall of the locking bar (205) is slidably connected to the bottom of the outer wall of the grinding disc (101). One end of the outer wall of the spring (206) is fixedly connected to the outer wall of the locking bar (205), and the other end of the outer wall of the spring (206) is connected to the outer wall of the U-shaped block (203).

2. The composite liner for a medium-speed coal mill according to claim 1, characterized in that, The coal grinding assembly (1) also includes a distribution plate (102). The equalizing disc (102) is fixedly connected to the top of the outer wall of the grinding disc (101). The axis of the equalizing disc (102) coincides with the axis of the grinding disc (101). The outer wall of the equalizing disc (102) is conical.

3. The composite liner for a medium-speed coal mill according to claim 1, characterized in that, The coal grinding assembly (1) also includes wear-resistant balls (105). Multiple wear-resistant balls (105) are provided, and the multiple wear-resistant balls (105) are linearly arranged and fixedly connected to the top of the outer wall of the liner (103). By providing wear-resistant balls (105), the wear on the composite layer (104) is reduced, and the service life of the liner (103) and the composite layer (104) is increased.

4. The composite liner for a medium-speed coal mill according to claim 1, characterized in that, The locking assembly (2) also includes a sliding hole (201); Multiple sliding holes (201) are provided, and the multiple sliding holes (201) are arranged in a circle at the bottom of the outer wall of the grinding disc (101) and extend to the top of the outer wall of the grinding disc (101). The outer wall of the locking post (202) is slidably connected to the inner wall of the sliding hole (201).

5. The composite liner for a medium-speed coal mill according to claim 1, characterized in that, The locking assembly (2) also includes a slip ring (204); Two slip rings (204) are provided, and the inner diameters of the two slip rings (204) are different. The top of the outer wall of the slip ring (204) is slidably connected to the bottom of the outer wall of the grinding disc (101) and the inner wall of the U-shaped block (203). The locking bar (205) is fixedly connected to the two slip rings (204).

Images