CN2538427Y

CN2538427Y - Screw classifying lining board

Info

Publication number: CN2538427Y
Application number: CN 02220044
Authority: CN
Inventors: 周长海; 张敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-16
Filing date: 2002-04-16
Publication date: 2003-03-05
Anticipated expiration: 2012-04-16

Abstract

The utility model relates to a screw classifying lining board, particularly an improved lining board of a ball grinding mill. The technical problem which needs to be solved is to provide a screw classifying lining board which can prolong the walking route and the walking time of the materials in the grinding mill to crush and grind the materials in the grinding mill repeatedly. The inner surface of the lining board (2) is made into a screw shape, the screw angle is from 30 to 50 DEG, and the screw pitch is from 100 to 250 mm. Owing to the change of the surface structure, the shape and the assembly structure of the lining board, the parabola formed in the operation of the grinding body following the grinding mill bends forward an angle alpha to separate the grinding body with a relatively large diameter, and the grinding body returns into the front section of a warehouse and then carries out impact grinding. Therefore, the walking route and the walking time of the object in the grinding mill are prolonged, the materials are crushed and ground repeatedly in the grinding mill, and the grinding efficiency is enhanced.

Description

Screw classifying lining board

Technical field: the utility model relates to a kind of improved ball grinding machine lining board.

Background technology: ball grinding machine lining board is the vitals that directly influences mill grinding efficiency.At present, ball mill is employed such as ladder lining board, trench liner, taper classifying lining board, fin screw classifying lining board etc., though improved the mill efficiency of grinding machine to a certain extent, but, because their structure and the restriction of shape, the abrasive body and the oarse-grained material of big straight warp are advanced forward in grinding machine, allow material through repeatedly broken with grind, can not prolong route and time that material is walked in grinding machine, thereby cause grinding machine can not bring into play its maximum potentiality, limited the further raising of mill grinding efficiency.

Summary of the invention: technical problem to be solved in the utility model is: provide a kind of improved, can prolong route and time that material is walked in grinding machine, allow material in grinding machine, can obtain repeatedly screw classifying lining board broken and that grind.Its technical scheme is: the inner surface of liner plate is made spirality, and its helical angle is the 30-50 degree, and pitch is 100-250mm.Its technique effect is: compare with existing liner plate, the utility model is because according to the granularity of movement locus, grinding principle and the grinding charge material of the rotating speed of grinding machine, abrasive body and the fineness of product, and in conjunction with the concrete structure of grinding machine, by changing surface texture and the shape and the assembly structure of liner plate, make abrasive body with mill running the time, become the parabola α angle that turns forward, therefore the abrasive body of big straight warp can be separated, push feed end to, concentrate strength on the material of broken larger particles, thereby grinding machine storehouse number is doubled and distinguish grinding; And because the screw action on liner plate surface, oarse-grained object can be returned and carry out impact grinding in the leading portion storehouse again, prolonged the route that material is walked in grinding machine, thereby the effective length of the grinding machine that equaled to extend, especially increased the impact of the disengaging angle change frequency of abrasive body and abrasive body to material, grind frequency and time, increased the liner plate surface, thereby liner plate and abrasive body have been increased, the contact area of material, reach the purpose that improves mill efficiency, make the unit-hour output of grinding machine under equal fineness, improve 5.15%, or specific area increases 30-50cm/g with Isoquant the time, makes the per unit area yield power consumption reduce 5-15%, comprehensive per unit area yield benefit improves 15-25%.

The drawing explanation:

Fig. 1 is the utility model dextrorotation planform schematic diagram;

Fig. 2 is the left-handed planform schematic diagram of the utility model;

Fig. 3 lists intention for right hand helix classifying lining board assembly platoon;

Fig. 4 lists intention for left-hand screw classifying lining board assembly platoon.

Embodiment:

As shown in Figure 1 and Figure 2, that the inner surface of this screw classifying lining board 2 can be made into is left-handed, two kinds of dextrorotation, and its helical angle is the 30-50 degree, and pitch is 100-250mm.The installation of liner plate in the grinding machine tube joined arrangement and asked for an interview Fig. 3, Fig. 4.1 is existing liner plate among the figure, and 2 is this screw classifying lining board.

Claims

1, a kind of screw classifying lining board is characterized in that: the inner surface of described liner plate (2) is made spirality, and its helical angle is the 30-50 degree, and pitch is 100-250mm.

2, as weighing 1 described a kind of liner plate, it is characterized in that: described liner plate (2) is two kinds of left-handed, dextrorotation.