CN2928238Y

CN2928238Y - Composite lattic board for self grinder

Info

Publication number: CN2928238Y
Application number: CN 200620084363
Authority: CN
Inventors: 王成敬
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-13
Filing date: 2006-05-13
Publication date: 2007-08-01
Anticipated expiration: 2016-05-13

Abstract

The utility model discloses a compound grid plate utilizing for an auto-geneous tumbling mill, which comprises a grid plate body with material discharge holes for sieving auto-geneously milled materials. The grid plate body comprises a mesh style support whose surface is equipped with an elastic wear-resistant layer through cladding and the material discharge holes are conical. The utility model has the advantages that the compound grid plate avoids both wearing waste of grid plates made of expensive materials and the problem that grid plates made of steel materials generate iron chips due to attrition to increase the iron quantity inside the quartz sand products, thereby the quality of quartz sand products is increased.

Description

The composite grate plate that is used for autogenous tumbling mill

Technical field

The utility model relates to a kind of technical field of autogenous tumbling mill, especially relates to a kind of composite grate plate that is used for autogenous tumbling mill.

Background technology

Autogenous tumbling mill is as a kind of run-of-mine-milling equipment that relies on material self to impact mutually, grind and pulverize, and having need not medium, feeding granularity scope big (can reach 600mm), the output height, advantages such as discharge is even in the ore in sand form processing industry, have obtained in the processing as quartz sand using very widely.But the applied autogenous tumbling mill of current people, it is some expensive special steel materials that the material that parts adopted on it mostly is, grate as the manganese steel material, the grate that adopts this material is when processing processing to quartz sand, not only the autogenous tumbling mill deadweight is bigger, increased the working strength of autogenous tumbling mill drive unit, and with the frequent generation of quartz sand ore bump and when causing wearing and tearing, the manganese steel iron filings that the grate wearing and tearing are produced will be incorporated in the middle of the quartz sand product of being processed, product is polluted, influence the quality of product, and the manganese steel iron filings major part that these mix can not be selected it by follow-up magnetic separator, thereby the iron-holder in the product is increased greatly, reduced the quality of product.And the quartz sand product requires than higher iron-holder, and this just need adopt other operation and method to remove these manganese steel iron filings again, and this has increased production cost of products to a certain extent, has reduced production efficiency.

Summary of the invention

The technical problems to be solved in the utility model has provided a kind of composite grate plate that is used for autogenous tumbling mill, it has avoided adopting grate that the manganese steel material makes to produce the problem that iron-holder increases in the product that iron filings cause because of the brinelling of quartz sand ore, improve the quality of product, reduced production cost of products.

For solving the problems of the technologies described above, the technical solution of the utility model is: the composite grate plate that is used for autogenous tumbling mill, comprise the grate body, the grate body is provided with some relief holes that can screen material after the autogenous grinding, described grate body comprises netted support, and the surface of support coats and is provided with the elastic wear-resisting layer.

As a kind of improvement, described relief hole is a bellmouth, and the feeding end of relief hole is less than its discharge end.

As further improvement, described relief hole is a terrace with edge shape bellmouth.

As further improvement, described elastic wear-resisting layer is the vulcanized rubber layer.

As further improvement, described support is the reticulated carbon steel plate.

As further improvement, described carbon steel thickness of slab 12mm.

Adopt the composite grate plate of said structure, owing to be the plate that adopted the lattice that coat the composite construction formula that is provided with the elastic wear-resisting layer on the surface of support, like this, carry out contact-impact by being located at outer field elastic wear-resisting layer and quartz sand ore, the iron filings that produced the pollution problem of wearing and tearing that bumps of the grate of having avoided adopting the manganese steel material and quartz sand ore to product, reduced the content of iron filings in the product, improved the quality of product, reduce autogenous grinding simultaneously and wanted the wind own wt, alleviated the working strength of autogenous tumbling mill drive unit.And adopt the relief hole of feeding end less than discharge end is set on composite grate plate, the stifled phenomenon of the folder of quartz sand particle when discharge gate is discharged of having avoided the elasticity because of the elastic wear-resisting layer to cause, also the particle of feasible quartz sand of discharging diminishes simultaneously, has improved the quality of quartz sand autogenous grinding; Adopt the vulcanized rubber layer as elastic wear-resisting layer and reticulated carbon steel plate as support, both guaranteed the working strength of composite grate plate, improved the service life of elastic wear-resisting layer again.

Description of drawings

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described:

Fig. 1 is the structural representation that is used for the composite grate plate of autogenous tumbling mill of the present utility model;

Fig. 2 is that A---A among Fig. 1 is to cutaway view;

Fig. 3 is that B---B among Fig. 1 is to cutaway view;

Fig. 4 is to use the autogenous tumbling mill structural representation of grate in the prior art;

Fig. 5 is to use the structural representation of composite grate plate autogenous tumbling mill of the present utility model.

The specific embodiment

With reference to Fig. 4, the discharge end of autogenous tumbling mill mill tube 3 is equipped with the grate 7 that present people use among the figure, grate 7 by some circumferential array along mill tube 3 is divided into a material autogenous grinding space and discharge space with mill tube 3, circumferential array along mill tube 3 in the discharge space is provided with some dustpan plates 4 that the quartz sand particle through grate 7 screenings can be transported in the discharge barrel 5, because it is bar hole that the relief hole on the grate that current people use mostly is, through existing some bigger quartz sand particles in the garbled quartz sand of grate that is provided with the bar shaped relief hole, so in discharge barrel 5, be provided with self-return screen 6, self-return screen 6 can carry back mill tube 3 to carry out autogenous grinding again by big quartz sand particle, then can enter in the postorder operation than the quartz sand of granule.In the autogenous grinding process of quartz sand, grate 7 constantly carries out brinelling with mill tube 3 interior oarse-grained quartz sand ores, therefore grate 7 need have enough intensity and anti-wear performance, so it is the manganese steel material that the material of the manufacturing grate 7 of current employing mostly is, this has caused the manufacturing cost of grate higher, and because the continuous brinelling of quartz sand ore, the a large amount of manganese steel iron filings of grate 7 generations of manganese steel material are entered in the middle of the product processed, product is polluted, influence the quality of product.And the manganese steel iron filings major part that these mix is it to be selected by follow-up common magnetic separator, this has just increased people remove iron filings from product difficulty, thereby the iron-holder in the product is increased greatly, reduced the quality of product, increase production cost of products, reduced the production efficiency of quartz sand.

This phenomenon according to autogenous tumbling mill, the utility model provides a kind of composite grate plate that is used on the autogenous tumbling mill, with reference to Fig. 1, Fig. 2 and Fig. 3, this composite grate plate 1 comprises the grate body, on the grate body, be distributed with some relief holes 2, screen and discharge and enter the dustpan plate and be transported in the discharge barrel by reaching quartz sand particle that autogenous grinding requires in the mill tube of relief hole 2 with autogenous tumbling mill; Wherein the grate body includes netted support 12, be provided with elastic wear-resisting layer 11 in the coating of the surface of support 12, because grate 1 needs intensity that keeps higher and the service life of growing 1 at work, the carbon steel sheet support that support 12 can adopt carbon steel material to make to have mesh, resemble and adopt the thick carbon steel sheet support of 12mm, not only guaranteed the intensity of grate, also make grate weight lighten, and elastic wear-resisting layer 11 can adopt the caoutchouc elasticity wearing layer, can make rubber-steel combined type grate by the vulcanization of rubber and grate.Because on the surface of the support that adopts the reticulated carbon steel plate type, coat and be provided with vulcanized rubber elastic wear-resisting layer, the inwall of relief hole 2 also is a vulcanized rubber elastic wear-resisting layer, like this, the board-like support of whole carbon steel separates with extraneous by vulcanized rubber elastic wear-resisting layer, the quartz sand ore carries out autogenous grinding and when the relief hole 2 by composite grate plate 1 screens in the autogenous tumbling mill mill tube, only can contact with vulcanized rubber elastic wear-resisting layer, and can not contact with the board-like support of carbon steel, so just avoided the quartz sand ore bump of the board-like support of carbon steel to be caused the phenomenon of wearing and tearing, the iron filings pollution problem that has simultaneously also solved product has improved the quality of product.

Because elastic wear-resisting layer 11 has certain elasticity, resemble vulcanized rubber elastic wear-resisting layer, so the stifled phenomenon of folder appears in quartz sand particle easily when discharging through relief hole 2, influenced the timely discharge of the quartz sand in the autogenous tumbling mill mill tube, therefore relief hole 2 can be designed to the shape of bellmouth, as shown in Figure 2, can adopt the relief hole of terrace with edge shape tapered bore profile, certainly, also can be the relief hole of frustum tapered bore profile, and the feeding end of relief hole 2 is less than its discharge end, be that relief hole 2 is less than it near an end of being discharged quartz sand particle by the dustpan plate near an end that is in the quartz sand ore of autogenous grinding state in the autogenous tumbling mill mill tube, so just avoided quartz sand particle in the stifled phenomenon of folder when discharge gate 2 is discharged, it is littler that while makes also that like this aperture of relief hole 2 can be designed, make that the quartz sand particle of discharging is also littler, this has not only improved the quality of quartz sand ore autogenous grinding, also the self-return screen in the autogenous tumbling mill top discharge tube 5 can be saved simultaneously, autogenous tumbling mill as shown in Figure 5, and after the bigger particle that is contained in the quartz sand can carry out Screening Treatment by the vibratory sieve in the operation of back, carry back autogenous tumbling mill to carry out autogenous grinding again by miscellaneous equipment.The structure that this has not only simplified autogenous tumbling mill has greatly reduced the weight of autogenous tumbling mill, has reduced the working strength of drive unit.Simultaneously, avoided of the pollution of the iron filings of quartz sand particle and self-return screen wearing and tearing generation, reduced the content of iron filings in the quartz sand product, further improved the quality of quartz sand product the quartz sand product.

The composite grate plate that is used on the autogenous tumbling mill of the present utility model not only is applied to the autogenous tumbling mill of quartz sand processing industry, equally also can be applied on the autogenous tumbling mill of autogenous grinding processing of other products such as ore, slag, ballstone, and can reach same function and effect.

Claims

1, the composite grate plate that is used for autogenous tumbling mill, comprise the grate body, the grate body is provided with some relief holes (2) that can screen material after the autogenous grinding, and it is characterized in that: described grate body comprises netted support (12), and the surface of support (12) is coated with elastic wear-resisting layer (11).

2, the composite grate plate that is used for autogenous tumbling mill according to claim 1 is characterized in that: described relief hole (2) is a bellmouth, and the feeding end of relief hole (2) is less than its discharge end.

3, the composite grate plate that is used for autogenous tumbling mill according to claim 2 is characterized in that: described relief hole (2) is a terrace with edge shape bellmouth.

4, the composite grate plate that is used for autogenous tumbling mill according to claim 1 is characterized in that: described elastic wear-resisting layer (11) is the vulcanized rubber layer.

5, according to claim 1,2, the 3 or 4 described composite grate plates that are used for autogenous tumbling mill, it is characterized in that: described support (12) is the reticulated carbon steel plate.

6, the composite grate plate that is used for autogenous tumbling mill according to claim 5 is characterized in that: described carbon steel thickness of slab 12mm.