CN203816703U

CN203816703U - Grinding bowl lining plate of bowl-type medium-speed coal mill

Info

Publication number: CN203816703U
Application number: CN201420203074.0U
Authority: CN
Inventors: 洪振阳
Original assignee: XIAMEN JINBANGDA INDUSTRIAL Co Ltd
Current assignee: XIAMEN JINBANGDA INDUSTRIAL Co Ltd
Priority date: 2014-04-24
Filing date: 2014-04-24
Publication date: 2014-09-10
Anticipated expiration: 2024-04-24

Abstract

The utility model discloses a grinding bowl lining plate of a bowl-type medium-speed coal mill, wherein the grinding bowl lining plate consists of a plurality of lining plate bar substrates; a surfacing layer is formed on each lining plate bar substrate in a surfacing mode. According to the utility model, the lining plate bar substrates are recycled by online surfacing repairing or offline surfacing repairing, the repairing is convenient, and the use cost is saved.

Description

A kind of mill bowl liner plate of bowl pulverizer

Technical field

The utility model relates to a kind of bowl pulverizer, refers in particular to a kind of mill bowl liner plate of bowl pulverizer.

Background technology

As shown in Figure 1, the mill cup apparatus of the disclosed a kind of bowl pulverizer of prior art, is installed in the side body set of coal pulverizer, as shown in Figure 3, comprises mill bowl 10 and mill bowl liner plate 20, and mill bowl liner plate 20 is installed on mill bowl 10.For strengthening the wearability of mill bowl liner plate 20, reduce mill bowl liner plate 20 replacement frequency, the material of described mill bowl liner plate 20 is cast steel with high chromium, makes the cost of mill bowl liner plate 20 higher.

As shown in Figure 2, described mill bowl liner plate 20 is comprised of a plurality of lining plates, and for convenience of installing, lining plate is set to 40 conventionally, and described a plurality of lining plates are equipped with on mill bowl 10.

Described lining plate is easily wearing and tearing in long-term process of lapping, and lining plate cannot be repaired and reuse after wearing and tearing, and all lining plates all need whole replacings, thus the use cost of increase equipment.

In view of defect described in the mill cup apparatus of prior art bowl pulverizer, the inventor furthers investigate, and develops a kind of mill bowl liner plate that overcomes the bowl pulverizer of described defect, and this case produces thus.

Utility model content

The purpose of this utility model is to provide a kind of mill bowl liner plate of bowl pulverizer, mill bowl liner plate can be repaired, thereby reduce equipment use cost.

For reaching above-mentioned purpose, solution of the present utility model is:

A mill bowl liner plate for bowl pulverizer, described mill bowl liner plate is comprised of a plurality of lining plate base materials, and the mode by built-up welding on each lining plate base material forms one deck overlay cladding.

Further, the material of described a plurality of lining plate base materials is carbon steel.

Further, the welding wire of described built-up welding is for taking charge of too vertical position welding silk.

Further, on the abradant surface of described mill bowl liner plate, form arc groove.

Adopt after such scheme, the utility model mode by built-up welding on each lining plate base material forms one deck overlay cladding, described lining plate base material is when long-term grinding, first wearing and tearing is overlay cladding, when occurring lining plate base material overlay cladding when wearing and tearing, can repair or off-line built-up welding is repaired by online built-up welding, this lining plate base material is reused, it repairs convenient, and saves use cost; Meanwhile, on each lining plate base material, form one deck overlay cladding, make lining plate base material more wear-resisting, increase the service life.

Meanwhile, on the abradant surface of mill bowl liner plate, form arc groove, be difficult for landing after making raw coal fall into arc groove, milling time is longer, and former coal grinding is abundant, and makes the area of former coal grinding larger, the raw coal amount that single grinds is more, makes the efficiency of grinding higher.

Accompanying drawing explanation

Fig. 1 is prior art mill bowl structure schematic diagram;

Fig. 2 is prior art mill bowl liner plate layout drawing;

Fig. 3 is the structural representation that prior art mill bowl is installed on coal pulverizer;

Fig. 4 is the utility model mill bowl structure schematic diagram;

Fig. 5 is the utility model mill bowl liner plate layout drawing.

Label declaration

Mill bowl 10 mill bowl liner plates 20

Mill bowl liner plate 1 lining plate base material 11

Arc groove 12.

The specific embodiment

Below in conjunction with drawings and the specific embodiments, the utility model is described in detail.

Consult shown in Fig. 4 and Fig. 5, the mill bowl liner plate 1 of a kind of bowl pulverizer that the utility model discloses, described mill bowl liner plate 1 is comprised of a plurality of lining plate base materials 11, in the present embodiment, as shown in Figure 5, mill bowl liner plate 1 is comprised of 12 lining plate base materials 11, and the mode by built-up welding on each lining plate base material 11 forms one deck overlay cladding.

For cost-saving, the material of described a plurality of lining plate base materials 11 is carbon steel, and the lining plate base material of prior art is cast steel with high chromium, it is directly as abradant surface, and the utility model forms overlay cladding on each lining plate base material 11, by overlay cladding as abradant surface, therefore, lining plate base material 11 can substitute existing cast steel with high chromium with carbon steel, and larger reduces costs.

The welding wire of described built-up welding is for taking charge of too vertical position welding silk, and its wearability is better.Mode by built-up welding on each lining plate base material 11 forms one deck overlay cladding, described lining plate base material 11 is when long-term grinding, first wearing and tearing is overlay cladding, when having the 11 overlay cladding wearing and tearing of lining plate base material, can repair or off-line built-up welding is repaired by online built-up welding, this lining plate base material 11 is reused, and it repairs convenient, and saves use cost.Meanwhile, on each lining plate base material 11, form one deck overlay cladding, make lining plate base material 11 more wear-resisting, increase the service life.

Simultaneously, on the abradant surface of mill bowl liner plate 1, form arc groove 12, on the overlay cladding of mill bowl liner plate 1, form arc groove 12, after making raw coal fall into arc groove 12, be difficult for landing, milling time is longer, and former coal grinding is abundant, and makes the area of former coal grinding larger, the raw coal amount that single grinds is more, makes the efficiency of grinding higher.

The foregoing is only an embodiment of the present utility model, the not restriction to this case design, all equivalent variations of doing according to the design key of this case, all fall into the protection domain of this case.

Claims

1. a mill bowl liner plate for bowl pulverizer, is characterized in that: described mill bowl liner plate is comprised of a plurality of lining plate base materials, and the mode by built-up welding on each lining plate base material forms one deck overlay cladding.

2. the mill bowl liner plate of a kind of bowl pulverizer as claimed in claim 1, is characterized in that: the material of described a plurality of lining plate base materials is carbon steel.

3. the mill bowl liner plate of a kind of bowl pulverizer as claimed in claim 1, is characterized in that: the welding wire of described built-up welding is for taking charge of too vertical position welding silk.

4. the mill bowl liner plate of a kind of bowl pulverizer as claimed in claim 1, is characterized in that: on the abradant surface of described mill bowl liner plate, form arc groove.