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Split-type inner cone device and bowl-type medium-speed coal mill

A coal pulverizer, split-type technology, applied in the field of coal pulverizers, can solve the problems of inconvenient installation and replacement of the inner cone, and achieve the effects of convenient maintenance and replacement, small size, cost and labor saving

Pending Publication Date: 2019-02-26
XIAMEN JINBANGDA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a split-type inner cone device, aiming at improving the inconvenience of installation and replacement of the inner cone

Method used

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  • Split-type inner cone device and bowl-type medium-speed coal mill
  • Split-type inner cone device and bowl-type medium-speed coal mill
  • Split-type inner cone device and bowl-type medium-speed coal mill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] see Figure 2-4 , this embodiment provides a split-type inner cone device 100 for a bowl-type medium-speed coal pulverizer, including a plurality of cone plates 110, and the multiple cone plates 110 can be sequentially spliced ​​into a hollow cone-shaped body along the circumferential direction , the upper end 101 of the cone has a large opening and the lower end 102 has a small opening.

[0034] Further, the width of the upper end of the cone plate 110 is greater than the width of the lower end, and the opposite sides of the cone plate 110 are provided with S-shaped fastening portions 111, and the S-shaped fastening portions 111 of two adjacent cone plates are located between the cones. Interlocking in the direction of the busbar C.

[0035] It can be understood that the S-shaped fastening part at one end of the cone plate 110 can be provided with a convex part, and the S-shaped fastening part at the other end can be provided with a groove matching the protrusion, and...

Embodiment 2

[0046] see Figure 5 , the embodiment of the present invention provides a bowl-type medium-speed coal mill 200, including a side body device 210, a separator top cover device 260, a separator body device 240, a bowl grinding device 220 installed in the side body device 210, an installation The grinding roller device 230 in the separator body device 260 and the split-type inner cone device 100 provided in Embodiment 1, the split-type inner cone device 100 is fixed in the cavity of the separator top cover device 260 .

[0047] Further, the bowl-type medium-speed coal mill 200 also includes a guide device 250 arranged at the end of the separator body device 240 close to the grinding bowl device 220, and the guide device 250 is used to carry out the first-stage grinding of the pulverized coal pulverized by the grinding bowl. separate.

[0048] like Image 6 As shown, in the prior art, the guide device 2 of the coal mill is composed of a support frame 21 and a wear-resistant cast...

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PUM

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Abstract

The invention provides a split-type inner cone device and a bowl-type medium-speed coal mill, and relates to the field of coal mills. The split-type inner cone device comprises a plurality of conicalplates, wherein the plurality of conical plates are spliced sequentially, circumferentially and detachably to form a hollow conical body; an upper end opening of the conical body is bigger, and a lower end opening thereof is smaller. An original integrated inner cone is divided into the plurality of separable conical plates, and the conical plates are small in volume, so that in a mounting process, the conical plates can be separately sent into a separator device and then assembled in the separator device; in a later maintenance process, a certain conical plate can be also detached and mountedseparately, and repair and replacement are more convenient.

Description

technical field [0001] The invention relates to a coal pulverizer, in particular to a split-type inner cone device and a bowl-type medium-speed coal pulverizer. Background technique [0002] At present, the inner cone of the HP bowl-type medium-speed coal mill is generally an ordinary steel plate structure, which is installed in the separator body of the coal mill to receive the heavy particle coal powder separated by the second stage in the coal mill, and make it It falls back into the grinding bowl along the inner wall of the cone for grinding. like figure 1 As shown, after the original inner cone 1 is loaded into the equipment, a ceramic liner 11 needs to be pasted on the surface of the inner cone 1 to form a complete inner cone structure. The function of the ceramic liner 11 is to prevent the inner cone 1 from being worn through, causing a short circuit of the pulverized coal flow and affecting the quality of the pulverized coal. After using for a period of time, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C15/06B02C15/00
CPCB02C15/00B02C15/06
Inventor 洪振阳
Owner XIAMEN JINBANGDA IND