CN2746988Y

CN2746988Y - Sieve plate

Info

Publication number: CN2746988Y
Application number: CN 200420108972
Authority: CN
Inventors: 李凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-17
Filing date: 2004-11-17
Publication date: 2005-12-21
Anticipated expiration: 2014-11-17

Abstract

The utility model relates to a sieve plate with superior anti-shock capability, long use period and high hole ratio. The utility model is mainly used on the screening apparatus in the fields of ore, coal and building material, comprises a framework and an outer coating-layer, and is characterized in that the framework is made by the circumference of the net embossed and braided by steel bars connecting with the frame of the steel plate into an entirety; the outer surface of the skeleton is coated with a highly wear resistance rubber alloy layer. The upper working rubber layer of the sieve deck designed by the utility model is a thick highly wear resistance rubber alloy layer which has the obvious advantages of toughness, wear resistance, anti-wear and anti-impact. The middle layer is a framework made of rigid material supporting and strengthening the intensity of the sieve deck and preventing the sieve deck from deforming under external force. The utility model has long use period and high hole ratio.

Description

Sieve plate

Technical field

The utility model relates to the parts on a kind of screening plant, specifically is exactly to screen cloth or plate on the screening installation of materials such as ore, coal and building materials.

Background technology

The sieve plate that uses on the existing screening plant roughly can be divided into rigidity and flexible two classes.

The primary structure form of rigidity sieve plate has braided steel wire, round steel welding and steel plate punching.This class rigidity sieve plate belongs to traditional product, and its processing technology and structure are all simpler, percent opening 30～70%, the wide 0～100mm of screen size.Its major defect is that noise is big, can reach 120db; Life cycle is short, and wherein the sieve plate life cycle of round steel built-up welding and braided steel wire is 3～10 days, and steel plate punching sieve plate life cycle is 15～30 days; Occur Ka Kuang, plug-hole phenomenon in screening operation easily, production efficiency is low.

Flexible sieve plate mainly is meant the sieve plate that is made with macromolecular material rubber, polyurethane.Mainly contain inner skeleton and the outside clad of this class sieve plate constitute.Wherein the structure of skeleton have the cord fabric skeleton, draw direction spacing distance (general 4～5 holes) bury underground the steel wire rope tension element as skeleton and with the punching steel plate as skeleton.Wherein cord fabric skeleton sieve plate screen size is 5～40mm, and life cycle dean was generally 15～90 days, reduces noise 10～15dB, and easy for installation, as shown in Figure 1, percent opening is 20%～30%; Wherein the screen size of steel wire rope sieve plate is 5～40mm, and life cycle is 30～120 days, and is easy for installation, and percent opening is high by 30～50%, as shown in Figure 2; Wherein steel plate frame screening plate screen size is 40～100mm, and life cycle is 20～50 days (under the harsh working condition), as shown in Figure 3.Major defect is: the percent opening 20～30% of cord fabric skeleton sieve plate, and low excessively percent opening has a strong impact on production efficiency; Lengthening deformation causes the sieve plate disabler easily, and 15～90 days life cycle still can not satisfy the requirement of modern production; Wire rope skeleton sieve plate (is example with main product polyurethane sieve plate in the market), had a strong impact on following service life in summer or southern rainy wet condition, under the harsh working condition (20～30 days) of non-ideal use, the product cost height, and the vibratory sieve type there is certain selectivity, as being used on the linear vibrating screen plug-hole, screening efficiency is low; The steel plate frame sieve-plate aperture ratio is low, and 20～30%, too heavy, per 80～100 kilograms/m2 easily produces stress under external force and concentrates and delamination, causes the sieve plate distortion, comes unstuck and loses efficacy life cycle 15～50 days.

Technology contents

The purpose of this utility model just provides the sieve plate that a kind of shock resistance is superior, life cycle is long and percent opening is high, takes into account the screening that is used for large and small granule materials.

For achieving the above object, the technical solution adopted in the utility model is: a kind of sieve plate, it comprises skeleton and outside clad, it is characterized in that: skeleton is woven into around the dictyosome to be connected as a single entity with the steel plate frame by the reinforcing bar cotton ginning and constitutes, and the outer surface of skeleton is coated with high abrasion rubber and plastic alloy layer.

The upper strata of described skeleton is the work glue-line that is made of high abrasion rubber and plastic alloy layer, and lower floor is the primer layer that is made of high abrasion rubber and plastic alloy layer, and described steel plate frame is that the unequal angle system of enclosing is welded.

By above technical scheme as can be known, the sieve plate of the utility model design, from structure is to be made of three layers of different material, upper strata work glue-line is thicker high abrasion rubber and plastic alloy layer, owing to used the composite high-molecular highly elastic material, and handle, so have tough and tensile, wear-resisting, tear-proof and shock proof remarkable advantage through special reinforcement; The middle level is the skeleton that rigid material constitutes, and plays support, strengthens sieve plate intensity, the indeformable under external force function of control sieve plate; Lower floor is the primer layer of non-working surface, is thin, hard slightly glue-line, and by the carriage phase support of screen(ing) machine, above-mentioned work glue-line, skeleton and primer layer closely bond together, machine-shaping, and vulcanization crosslinking obtains finished product under HTHP; The utility model also has the advantage that life cycle is long, percent opening is high.

Description of drawings

Fig. 1,2, the 3rd, the structural representation of sieve plate of the prior art;

Fig. 4 is a structural representation of the present utility model;

Fig. 5 is a floor map of the present utility model;

Fig. 6 is an A-A cutaway view among Fig. 5;

Fig. 7 is the floor map of skeleton;

Fig. 8 is the upward view of Fig. 7;

Fig. 9 is the B-B cutaway view of Fig. 5;

Figure 10 is the left view of Fig. 7.

The specific embodiment

Shown in Fig. 4,5,6, the sieve plate of the utility model design comprises skeleton and outside clad, and skeleton 10 is woven into around the dictyosome 11 to be connected as a single entity with steel plate frame 12 by the reinforcing bar cotton ginning and constitutes, and the outer surface of skeleton 10 is coated with high abrasion rubber and plastic alloy layer.

As shown in Figure 5, the upper strata of described skeleton 10 is the work glue-lines 21 that are made of high abrasion rubber and plastic alloy layer, and lower floor is the primer layer 22 that is made of high abrasion rubber and plastic alloy layer, and described steel plate frame 12 is welded for the unequal angle system of enclosing.The work glue-line 21 that is in the upper strata adopts has elastomeric composite high-molecular material, handles through reinforcement, has tough and tensile, wear-resisting, tear-proof and shock proof distinguishing feature; Middle level skeleton 10 is that (40～60#) round steel cotton ginning braiding forms with φ 3～φ 12, described steel plate frame 12 usefulness A3 steel plates are made into unequal-sided frame, constitute the dictyosome 11 of described skeleton 10 and frame 12 and be welded to one another and link together, it mainly plays support, strengthens the effect of sieve plate intensity.The thickness of described work glue-line 21 is 1/2～2/3 of plate thickness, can guarantee tough and tensile, wear-resisting, the tear-proof and the shock resistance of sieve plate like this.

Perforation on described sieve plate mesh up and down is big end down through hole 30, and the profile of described through hole 30 is square, rectangle, circle, trapezoidal or polygonal, and this through hole 30 can make things convenient for passing through of mineral aggregate.Owing to adopted said structure, make sieve aperture have the good Zhang Nengli that speeds, promptly there is little cyclically-varying in the aperture under external force, sieve aperture is designed to big end down through hole 30 structures, so the plug-hole phenomenon should not occur, sieve plate has good self-purification capacity, and screening efficiency obviously improves.

The relative both sides of described sieve plate are step-like cross section, and this edge, both sides is provided with installing technological hole or gap 40, and being provided with of hole or gap 40 mainly is for the facility that guarantees to install and reliable and stable.Have on the steel plate frame 12 around the sieve plate and connect through hole 121 up and down, this through hole 121 be filled with and work material of glue-line 21 and primer layer 22 homogeneities, this part-structure is as riveted structure, play the effect of firm connection work glue-line 21 and primer layer 22, avoid clad and skeleton 10 to come off, these through hole 121 processes of tamping are to finish in the sulfuration, cross moulding process at sieve plate.

The main process of preparation of the present utility model is: carry out pickling, passivation behind the skeleton forming, adhesive for spraying vulcanizes, is cross-linked to moulding, finishing touch, material selection high molecular polymer behind the dress mould again.

The utility model simple installation connects with conventional bolted mode and get final product, for the screening plant of coming of new, can directly press novel process for installing design, installation the utility model; For existing screening plant, can simply transform, need not to influence the structure of whole set equipment to it, can realize installing, and can save substantial contribution and reduce workload.

The utility model technical indicator is significantly increased than product of the prior art, this is because the utility model has adopted middle level skeleton and appearance to coat the special construction of high abrasion rubber and plastic alloy layer, concrete manifestation is in the following areas: can absorb impulsive force efficiently, so fabulous wear-resistant grain polishing machine is arranged, this is because the own tool of high abrasion rubber and plastic alloy layer that appearance coats is the macromolecule organic elastomer, under normal circumstances, be 6～10 times of metal sieve plate service life of the present utility model 1～2 times of common abrasive rubber sieve plate; Percent opening height, percent opening can satisfy the screening needs preferably up to 40%～70%; Shock resistance is good, owing to adopted the reinforcing bar cotton ginning to constitute skeletons 10 with steel plate frame 12 around being woven into dictyosome 11, this rigid-skeleton has been strengthened the bearing capacity and the impact resistance of sieve plate greatly; Noise is low, dust is few, and is suitable with the abrasive rubber sieve plate according to reducing by 10～20 decibels of noises than the use metal sieve plate behind the identical screening plant use the utility model of test on probation, and can effectively reduce and reduce dust, and working environment significantly improves.

Claims

1, a kind of sieve plate, it comprises skeleton and outside clad, it is characterized in that: skeleton (10) by the reinforcing bar cotton ginning be woven into dictyosome (11) all around with steel plate frame (12) formation that is connected as a single entity, the outer surface of skeleton (10) is coated with high abrasion rubber and plastic alloy layer.

2, sieve plate according to claim 1, it is characterized in that: the upper strata of described skeleton (10) is the work glue-line (21) that is made of high abrasion rubber and plastic alloy layer, lower floor is the primer layer (22) that is made of high abrasion rubber and plastic alloy layer, and described steel plate frame (12) is welded for the unequal angle system of enclosing.

3, sieve plate according to claim 1 and 2 is characterized in that: constitute the dictyosome (11) of described skeleton (10) and frame (12) and be welded to one another and link together, the thickness of described work glue-line (21) is 1/2～3/4 of plate thickness.

4, sieve plate according to claim 3 is characterized in that: the mesh up and down of the perforation on the described sieve plate is big end down through hole (30).

5, sieve plate according to claim 1 and 2, it is characterized in that: the both sides respect to one another of described sieve plate are step-like cross section, the edge on these both sides is provided with installing technological hole or gap (40), have on the steel plate frame (12) all around to connect through hole (121) up and down, this through hole (121) is filled with and the material of glue-line of working (21) and primer layer (22) homogeneity.

6, sieve plate according to claim 4 is characterized in that: the profile of described through hole (30) is square, rectangle, circle, trapezoidal or polygonal.