CN2597080Y

CN2597080Y - Seizure-proof ball mill grid

Info

Publication number: CN2597080Y
Application number: CNU032328877U
Authority: CN
Inventors: 正林; 林正
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-15
Filing date: 2003-01-15
Publication date: 2004-01-07
Anticipated expiration: 2013-01-15

Abstract

The utility model relates to a blockage-preventive grate board for the ball mill and includes a grate board 1, a plurality of grate ribs 2 arranged in the grade board 1 and a grate seam 3 between two neighboring grate ribs 2 and is characterized in that the grate rib 2 in the shortest part H of the grate seam 3 has a cambered surface, the surfaces of the grate rib 2 of the other parts in the grate seam 3 are plane tangent to the cambered surface or is the same cambered surface. The utility model has the advantages of that the cross-sectional shape of the grate seam 3 has no sudden corner and thus the blockage of the grate seam 3 can be eliminated.

Description

The ball mill grate plate that anti-sticking is stifled

One, technical field:

The utility model relates to a kind of ball mill grate plate, and what can be used for any diameter, length contains the middle partition panel of ball mill, discharging grate plate at interior ball mill grate plate.

Two, background technology:

The ball mill of all size has adopted some kinds of multi-form grate plates (to comprise partition panel now, the discharging grate plate), ball mill is divided into a storehouse, two storehouses, three storehouses etc., in order to make material smooth and easy stifled in mill by not blocking, just various different angles have been designed, advancing of shape, tapping channel, but all unresolved material of actual conditions and foreign material are in the stifled problem of the card of castor seam, and the stifled thing of the card of castor seam generally accounts for the 25-50% of the castor seam gross area, and are the most serious even reach 60-70%, the card of castor seam is stifled to cause mill inner ventilation bad, the percent of pass of material descends, and the grinding phenomenon occurs, produces thereby influence whole milling system, the raising of quality.

Three, summary of the invention:

The purpose of this utility model is to overcome the deficiencies in the prior art, designs a kind of ball mill grate plate of eliminating the stifled phenomenon of card.

The analysis showed that cause the main cause of the stifled phenomenon of grate plate card to be, there is the sudden change turning in castor seam cross sectional shape.For this reason, basic ideas of the present utility model are castor to be stitched cross sectional shape be designed to the smooth excessiveness shape, thereby eliminate the sudden change turning.

The utility model is achieved in that

The ball mill grate plate that a kind of anti-sticking is stifled, comprise grate plate, be located at many castor muscle in the grate plate, the slit castor seam that forms between adjacent two castor muscle, it is characterized in that the castor muscle surface that is positioned at the interval H of castor seam minimal segment is cambered surface, the castor muscle surface of all the other castor seam segments is the plane tangent with cambered surface.

Further scheme is that described cambered surface is that arc chord angle is the arc surface of α.

Further scheme is, the cross sectional shape of castor muscle is circular.This moment, arc chord angle was that α is 180 °, and promptly cambered surface is a semi arch, and plane tangent plane section is zero.

The utility model is a shape of circle such as the castor muscle of grate plate being used under former grate plate installation dimension and all indeclinable situation of draught area.Replaced original various radiation angle.Castor seam width can be set arbitrarily according to the kind needs of grinding material.

Adopt the grate plate after this technological improvement, the castor seam is made up of two 180 ° circular arc.By facts have proved: this shape has eliminated material up hill and dale and foreign material block up phenomenon at the card of castor seam.

After adopting this technological improvement, the middle partition panel of ball mill and discharging grate plate do not exist material and foreign material card to block up phenomenon.It will make mill inner ventilation better, improve the material percent of pass greatly, reduce the grinding phenomenon.Thereby raising mill output.Complete available bead in fine grinding storehouse or little forging simultaneously.The specific area that goes out grind materials like this will increase considerably.As be used for cement grinding mill, under all identical situation of grog and blended materials, can improve the early strength of cement or mix a certain proportion of compound more, to reduce the manufacture of cement cost.

Four, accompanying drawing and explanation:

Fig. 1 is the sectional drawing of one of existing castor seam.Its charging and discharging end has adopted different radiation angles.

Fig. 2 is two a sectional drawing of existing castor seam.

Fig. 3 is the sectional drawing of a kind of embodiment of castor seam described in the utility model.

Fig. 4 is the front view of a kind of embodiment of grate plate described in the utility model.

Fig. 5 is the A-A cutaway view of Fig. 4.

Fig. 6 is the sectional drawing of the another kind of embodiment of grate plate described in the utility model.

Among the figure: 1-grate plate 2-castor seam 3-castor muscle 4-bolt hole.

Five, implementation:

As Fig. 1 and Fig. 2, the narrowest section of the section configuration of castor seam 3 is rectangle, and different radiation angles has been adopted in the one or both ends of its charging and discharging end.

As Fig. 3, the narrowest section H of the section configuration of castor seam 3 is two sections circular arcs of α for the arc chord angle of symmetry, and its charging and discharging end is the tangent plane of arc section.

As Fig. 4 and Fig. 5, it is a kind of grate plate 1 that has improved.The shape of circles such as its castor muscle 2 usefulness has replaced the radiation angle of various patterns.This grate plate 1 is to adopt wear-resisting first steel and weldment welding production to form.To be place easy to wear, edge, both sides, grate plate 1 middle part towards the plate face in second storehouse, respectively add one section wear-resisting first steel of weldering if the middle partition panel of grinding machine adopts this technology also to need.

Fig. 6 directly uses a kind of in the ball mill discharging grate plate 1 of forging type moulding.Wherein castor muscle 2 directly is cast as circle.Specifically can adopt wear-resisting alloy steel and cast member to be welded, or direct two kinds of methods of casting.

Claims

1, the stifled ball mill grate plate of a kind of anti-sticking, comprise grate plate (1), be located at the many castor muscle (2) in the grate plate (1), the slit castor seam (3) that forms between adjacent two castor muscle (2), it is characterized in that castor muscle (2) surface that is positioned at the interval H of castor seam (3) minimal segment is cambered surface, castor muscle (2) surface of all the other castor seam (3) segments is the plane tangent with cambered surface.

2, the stifled ball mill grate plate of anti-sticking according to claim 1 is characterized in that described cambered surface is that arc chord angle is the arc surface of α.

3, the stifled ball mill grate plate of anti-sticking according to claim 2, the cross sectional shape that it is characterized in that castor muscle (2) is for circular.