CN217042827U

CN217042827U - Grinding disc tile of medium-speed coal mill

Info

Publication number: CN217042827U
Application number: CN202123374848.5U
Authority: CN
Inventors: 朱国伟
Original assignee: Jiangsu Xingyuan Power Plant & Metallurgical Equipment Manufacturing Co ltd
Current assignee: Jiangsu Xingyuan Power Plant & Metallurgical Equipment Manufacturing Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-26
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a mill tile of medium speed coal pulverizer, including the mill body, mill body working face constitute by the curved surface that the cambered surface transition of different curvatures formed, the working face on be equipped with the resurfacing layer, the installation face of mill body set up to "M" shape structure, the installation face of mill body is provided with pendant groove and joint groove, pendant groove and joint groove between be provided with the plane changeover portion. The utility model discloses a set up the curved surface that the cambered surface transition of different curvatures formed into with mill body working face, make extrusion force and the peeling force that acts on the material more complicated, improved the extruded accuracy nature of material milling, make the material effect of milling reach the best form, simultaneously through be equipped with the surfacing layer on the working face, can make mill body working face hardness reach 65 ~ 80HRC, thereby prolonged life, reduced cost of maintenance, greatly improved production efficiency and social and economic benefits.

Description

Grinding disc tile of medium-speed coal mill

Technical Field

The utility model relates to a breaker equipment field, concretely relates to mill tile of medium speed pulverizer.

Background

The medium-speed wheel-type coal mill is a device which uses a grinding roller and a grinding disc tile of a grinding part to grind raw coal into coal powder with a certain fineness and simultaneously completes the drying and conveying of the coal powder to the outside of the mill. The main components of the device are a grinding disc which is horizontally arranged, a grinding roller which is supported by the grinding disc, a grinding disc rotating power device and a pulverized coal wind power conveying and supplying device. Wherein, a plurality of sections of grinding disc tiles which are connected into a circumference are arranged on the grinding disc.

The research on the operation of the coal mill finds that the grinding disc tile of the medium-speed coal mill which is put into use at present

Mostly adopt single curvature concave arc shape, though these mill dish tile also can accomplish the operation of milling, in case meet the bulk material just can lead to the material to slide on mill dish tile and cause the efficiency of milling not high, and because the easy wearing and tearing position thickness of mill dish tile is thinner, its life is shorter relatively, change more frequently, and the overhaul of the equipments cycle is short, has increased the expense of user to the equipment maintenance.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model aims at providing a mill tile of medium speed coal pulverizer.

To realize the technical purpose, the utility model discloses a scheme is: the utility model provides a mill tile of medium speed pulverizer, includes the mill body, mill body working face constitute by the curved surface that the cambered surface transition of different curvatures formed, the working face on be equipped with the surfacing layer, the installation face of mill body set up to "M" shape structure, the installation face of mill body is provided with pendant groove and joint groove, pendant groove and joint groove between be provided with the plane changeover portion.

Preferably, the pendant groove and the clamping groove are shallow on one side close to the plane transition section and deep on one side far away from the plane transition section.

Preferably, the end part of the grinding disc body is provided with a hoisting bolt hole.

Preferably, the working surface of the grinding disc body is formed by a curved surface formed by transition of curved surfaces with the curvature radiuses of R293mm, R455mm, R350mm and R380 mm.

The utility model has the advantages as follows: 1. the working surface of the millstone body is set to be a curved surface formed by the transition of cambered surfaces with different curvatures, so that the extrusion force and the peeling force acting on the material are more complicated, the accuracy of material grinding extrusion is improved, and the material grinding effect reaches the best state.

Through being equipped with the surfacing layer on the working face, can make mill body working face hardness reach 65 ~ 80HRC to life has been prolonged, has reduced cost of maintenance, has greatly improved production efficiency and social economic benefits.

The installation surface of the grinding disc body is set to be of an M-shaped structure, the installation surface of the grinding disc body is provided with the hanging piece groove and the clamping groove, and a plane transition section is arranged between the hanging piece groove and the clamping groove, so that the installation is more convenient and faster, and the installation strength is also ensured.

Drawings

FIG. 1 is a schematic structural view of a working surface of the present invention;

fig. 2 is a schematic structural view of the mounting surface of the present invention;

fig. 3 is a sectional view a-a of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, specific embodiment be a medium speed pulverizer's mill tile, including mill body 1, 1 working face of mill body constitute by the curved surface that the cambered surface transition of different curvatures formed, 1 working face of mill body constitute by the curved surface that the cambered surface transition that radius of curvature was R293mm, R455mm, R350mm, R380mm formed, through setting up the curved surface that the cambered surface transition that sets up different curvatures formed with 1 working face of mill body, make the extrusion force that acts on the material more complicated with peeling force, improved the extruded accuracy nature of material grinding, make the material grind the effect and reach best form.

The grinding disc is characterized in that the surfacing layer 2 is arranged on the working surface, and the surfacing layer 2 is arranged on the working surface, so that the hardness of the working surface of the grinding disc body 1 can reach 65-80 HRC, the service life is prolonged, the maintenance cost is reduced, and the production efficiency and the social and economic benefits are greatly improved.

The grinding disc comprises a grinding disc body 1 and is characterized in that the mounting surface of the grinding disc body 1 is of an M-shaped structure, a hanging piece groove 3 and a clamping groove 4 are arranged on the mounting surface of the grinding disc body 1, a plane transition section 5 is arranged between the hanging piece groove 3 and the clamping groove 4, one side, close to the plane transition section 5, of the hanging piece groove 3 and one side, close to the plane transition section 5, of the clamping groove 4 are shallow, one side, close to the plane transition section 5, of the hanging piece groove 3 is deep, a hoisting bolt hole 6 is formed in the end portion of the grinding disc body 1, installation is convenient and rapid, and installation strength is guaranteed.

The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.

Claims

1. The utility model provides a mill tile of medium speed pulverizer, includes mill body (1), its characterized in that: the grinding disc comprises a grinding disc body (1), wherein the working surface of the grinding disc body (1) is formed by the curved surface formed by the transition of the cambered surfaces with different curvatures, a surfacing layer (2) is arranged on the working surface, the installation surface of the grinding disc body (1) is of an M-shaped structure, a hanging piece groove (3) and a clamping groove (4) are formed in the installation surface of the grinding disc body (1), and a plane transition section (5) is arranged between the hanging piece groove (3) and the clamping groove (4).

2. The grinding disc tile of the medium speed coal mill according to claim 1, characterized in that: the side of the hanging piece groove and the clamping groove (4) close to the plane transition section (5) is shallow, and the side of the hanging piece groove and the clamping groove (4) far away from the plane transition section (5) is deep.

3. The grinding disc tile of the medium speed coal mill of claim 1, wherein: the end part of the grinding disc body (1) is provided with a hoisting bolt hole (6).

4. The grinding disc tile of the medium speed coal mill of claim 1, wherein: the working surface of the grinding disc body (1) is formed by curved surfaces formed by transition of cambered surfaces with curvature radiuses of R293mm, R455mm, R350mm and R380 mm.