CN2204291Y

CN2204291Y - Heat-resistant conveying belt

Info

Publication number: CN2204291Y
Application number: CN 94212842
Authority: CN
Inventors: 吴洪举; 王宪立
Original assignee: Beijing No2 Rubber Plant
Current assignee: Beijing No2 Rubber Plant
Priority date: 1994-06-02
Filing date: 1994-06-02
Publication date: 1995-08-02
Anticipated expiration: 2004-06-02

Abstract

The utility model provides a heat resistant conveyor belt, in which an integrative belt with carcass steel wire spiral nets is used as a reinforcing layer instead of cotton duck, or the canvas of nylon, or the tarpaulin of polyester. The utility model fundamentally solves the technical problem of resisting heat of the reinforcing layer of the heat resistant conveyor belt; the reinforcing layer is designed into the structure of the spiral nets which is good for rubber infiltrates under a certain temperatures and pressure, and conglutination with the form of rivets between glues is formed; thereby, a belt body has a favorable property of integration, and the problems are solved that the delamination of conveyer belts are easily appeared when the conveyer belts are used, the glues are easily fallen, the phenomena of foaming is easily appeared, etc. The utility model effectively improves the physicomechanical properties of the heat resistant conveyor belt, and the service life is prolonged.

Description

Heat-resistant conveying belt

The utility model relates to conveyer supporting, as a kind of modern means of delivery, is widely used in the heat resistance conveyor belt of industries such as metallurgy, cement, chemical industry.

At present, the skeleton structure of heat resistance conveyor belt mostly is the canvas iterative structure both at home and abroad, as (Fig. 1): the canvas that framework material 1 is made into for cotton or Buddhist nun's yarn or polyester yarn, 2 times rubber covers of last rubber cover, 3 limit glue more than 4 adopt EP rubbers, butyl rubber; buna-S is through calendering, and moulding is vulcanized and made finished product.

There is following shortcoming in the said goods:

1) thermal property of framework material is poor.

The dissociation temperature of cotton fiber is 150 ℃, the softening point of nylon and polyester is respectively 225 ℃ and 240 ℃, and steel plant transport the actual temperature of sintered ore sometimes above 300 ℃, therefore, above-mentioned framework material is difficult to satisfy operating needs, becomes the principal element that hinders load-transfer device raising in service life.

2) there is fault of construction in the framework material lamination coating in the belt body forming process, and during the belt body moulding, casing play adopts the method for successively fitting, because moulding tension force can not be in full accord, each interlayer certainly exists internal stress, when heat resistance conveyor belt transports material, and belt body bears periodically variable drawing stress and flexure stress under load effect, each interlayer will be owing to relative displacement takes place, friction generates heat, and sizing material is aging, and then causes delamination, fall glue, and load-transfer device is scrapped in early days.

3) manufacturing process of multilayer canvas iterative structure load-transfer device is loaded down with trivial details, long flow path, and the energy and manpower are wasteful.

The purpose of this utility model: be to propose a kind of shortcoming that can eliminate above-mentioned existing heat resistance conveyor belt, change traditional conveyer belt structure, upgrade traditional casing play material, simplify the technological process of production, reduce cost of product, improve the physical and mechanical properties of heat resistance conveyor belt, particularly heat aging property effectively, thus the steel wire web-roll core heat resistance conveyor belt that prolongs its service life effectively.

The purpose of this utility model is achieved in that and adopts the casing play of wire net monolithic devices belt carcass as load-transfer device, covers the load-transfer device that constitutes with the sizing material of fine heat-resisting performance such as Ethylene Propylene Terpolymer sizing material etc. again.Described wire net monolithic devices belt carcass is perpendicular and be parallel to each other with the load-transfer device length direction by many, the vertical bar steel wire of equidistant arrangement is as framework, every two adjacent vertical bar steel wires are constituted the hinge connection by corresponding two spiral wires with its staggered winding, form the net type, also can be every the staggered spiral wire that twines of a row, twine by adjacent two row's spiral wires half pitch that staggers.The load-transfer device casing play is designed to spiral net monolithic devices structure, help the infiltration of rubber under certain temperature and pressure, form the rivet type adhesion of glue and glue, thereby make load-transfer device have unrivaled overall performance, fundamentally solved easily delamination in the heat resistance conveyor belt use, bubble, fall hard nut to cracks such as glue, also have the tensile strength height simultaneously, percentage elongation is little, high temperature resistant, characteristics such as anti tear.

Below in conjunction with drawings and Examples the utility model is further specified;

Fig. 1 is a prior art heat resistance conveyor belt schematic cross-section.

Fig. 2 is the structural representation of the utility model heat resistance conveyor belt.

In Fig. 1,1 for framework material is the canvas that cotton thread or nylon yarn or polyester yarn are made into, rubber cover on 2,3, rubber cover, 4, limit glue down.

In Fig. 2, framework material be the vertical bar steel wire (5) that adopts many and be parallel to each other equidistant arrangements perpendicular with the load-transfer device length direction with adjacent two spiral wires (6) by than staggered winding in twos, realize hinge to connect and constitute, cover again and go up colloid (7), steel wire adopts copper facing or the galvanized steel wire of φ 1.0～1.6mm, and its manufacturing condition is as follows:

1) rubber cover back mixing

Roll temperature before the rubber mixing machine: 70～75 ℃

Back roll temperature: 65～70 ℃

2) calendering rubberizing

The wire net belt carcass of bearing is lifted on the support of conveying belt production line, under certain force of strain, rolls operation:

Roll temperature on the flattening mill: 85～95 ℃

Roll temperature in the flattening mill: 80～90 ℃

Roll temperature under the flattening mill: 85～95 ℃

3) sulfuration

Dull and stereotyped pressure: 3MPa

Curing temperature: 155 ℃ (steam pressure 0.45MPa)

Time of cure: 50 minutes

Claims

1, a kind of heat resistance conveyor belt is characterized in that adopting steel wire spiral mesh monolithic devices belt carcass, covers to constitute with the sizing material of resistance to heat.

2, heat resistance conveyor belt as claimed in claim 1, it is characterized in that described spiral net monolithic devices belt carcass, the vertical bar steel wire that is and be parallel to each other equidistant arrangement vertical with the load-transfer device length direction by many is as framework, every adjacent two vertical bar steel wire is constituted the hinge connection by corresponding two spiral twines with its staggered winding, forms the net type.

3, heat resistance conveyor belt as claimed in claim 1 or 2 is characterized in that described spiral net monolithic devices belt carcass, also can be every the staggered spiral wire that twines of a row, twine by adjacent two row's spiral wires half pitch that staggers.