CN111847952A

CN111847952A - Composite drying roller with telescopic combustion chamber for heating RAP and aggregate

Info

Publication number: CN111847952A
Application number: CN202010534944.2A
Authority: CN
Inventors: 高国强; 揭文忠; 陈聪永; 刘起愉
Original assignee: Fujian Tietuo Machinery Co Ltd
Current assignee: Fujian Tietuo Machinery Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2020-10-30

Abstract

The invention relates to a composite drying roller with a telescopic combustion chamber for heating RAP and aggregate, which comprises a drying roller connected to a rack, wherein a telescopic combustion chamber mechanism is arranged in the drying roller and is positioned at the discharge end of the drying roller; the telescopic combustion chamber mechanism comprises a telescopic combustion cylinder body arranged in the drying roller, one end of the telescopic combustion cylinder body is fixedly connected with the drying roller, and the other end of the telescopic combustion cylinder body extends or shortens relative to the drying roller; the telescopic combustion cylinder is connected with a supporting piece; the tail end of the supporting piece is connected with a sliding piece, and the sliding piece is matched with a track arranged in the drying roller. The invention has simple structure, and the telescopic combustion cylinder in the combined double-layer integrated heating and drying roller is contracted to the end of the burner, thereby improving the heating efficiency, reducing the fuel consumption, reducing the production cost, being beneficial to overhauling the interlayer cavity of the drying roller and prolonging the service life of the combustion chamber.

Description

Composite drying roller with telescopic combustion chamber for heating RAP and aggregate

Technical Field

The invention relates to the technical field of drying rollers, in particular to a composite drying roller with a telescopic combustion chamber for heating RAP and aggregate, which is suitable for heating a mixture formed by RAP and gravel in asphalt mixture plant-mixed heat regeneration stirring equipment or asphalt mixture stirring equipment or heating single gravel, and is also suitable for drying and heating additive gravel mixtures formed by adding additives which are low in ignition point and easy to bond into the gravel.

Background

At present, the hot plant-mix recycling stirring equipment for the asphalt mixture or the asphalt mixture stirring equipment are commonly a drying roller special for drying and heating aggregate, a recycling drying roller special for heating RAP, a combined double-layer integrated heating and drying roller for heating the aggregate and the RAP mixture and the like.

Although the mixture that grit material and RAP formed can be heated to above-mentioned drying roller commonly used and double-deck integral type heating drying roller, but there are the thermal efficiency low, the high scheduling problem of oil consumption in the grit material of heating alone, and the grit material will remain partial RAP in the double-deck roller intermediate layer after the double-deck integral type heating drying roller of combined type with the mixture that RAP formed, produce the bonding, the clearance of being difficult for opening.

Disclosure of Invention

Technical problem to be solved

In order to solve the above problems in the prior art, the present invention provides a composite drying drum with a telescopic combustion chamber for heating RAP and aggregate, which is simple in operation, is beneficial to overhaul the interlayer of the drying drum, and prolongs the service life of the combustion chamber.

(II) technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that:

a composite drying roller with a telescopic combustion chamber for heating RAP and aggregate comprises a drying roller connected to a rack, wherein a telescopic combustion chamber mechanism is arranged in the drying roller, the telescopic combustion chamber mechanism comprises a telescopic combustion barrel arranged in the drying roller, one end of the telescopic combustion barrel is fixedly connected with the drying roller, and the other end of the telescopic combustion barrel is extended or shortened relative to the drying roller; the telescopic combustion cylinder is connected with a supporting piece; the end of the supporting piece is connected with a sliding piece, the sliding piece is matched with a rail arranged in the drying roller, the sliding piece slides on the rail, and slides on the rail through the sliding piece, so that the telescopic combustion barrel is driven to extend or shorten relative to the drying roller.

Furthermore, a sandwich cavity is formed between the telescopic combustion cylinder and the drying roller.

Furthermore, the drying roller and the horizontal plane form an included angle of 4 degrees.

Further, the telescopic combustion cylinder is made into a 5-section telescopic structure by a high-temperature-resistant stainless steel plate.

Further, the sliding member is a pulley.

(III) advantageous effects

The invention has the beneficial effects that: when the mixture that the heating grit material and RAP formed needs to be dried, the flexible burning barrel stretches out, and the flame of combustor burns the heated air in the flexible burning barrel, utilizes the hot-air to heat the mixture, and the waste heat on the flexible burning barrel outer wall also will make the mixture heat, has avoided the ageing of RAP like this.

When the grit material is heated alone to needs, this one end of combustor is shrunk to the flexible burning barrel in the double-deck integral type heating drying roller of combined type, and the heat of the flame of combustor can direct radiation to grit material surface heating aggregate, improves heating efficiency to reduce fuel consumption, reduction in production cost is favorable to overhauing the intermediate layer chamber of drying roller, and has prolonged the life of combustion chamber.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the telescopic combustion chamber mechanism of the present invention in an extended state;

FIG. 3 is a schematic view of the telescopic combustion chamber mechanism of the present invention in a shortened state.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.

A composite drying roller with a telescopic combustion chamber for heating RAP and aggregate is shown in figures 1-3 and comprises a drying roller 1 connected to a frame and a rolling ring connected to the outer wall of the drying roller 1; the rack is connected with a driving mechanism which is a speed reducing motor, the output end of the speed reducing motor is connected with a riding wheel, and the outer wall of the riding wheel is attached to the outer wall of the rolling ring; the speed reducing motor directly drives the riding wheel, and the friction force is utilized to drive the rolling ring, so that the rotation of the drying roller 1 is realized.

In order to enable the materials in the drying roller 1 to be capable of flowing from the feeding end to the discharging end in the rotating process, the drying roller 1 and the horizontal plane form an included angle of 4 degrees.

Specifically, a telescopic combustion chamber mechanism is arranged in the drying roller 1, and the telescopic combustion chamber mechanism is positioned at the discharge end of the drying roller 1; the telescopic combustion chamber mechanism comprises a telescopic combustion cylinder body 2 arranged in a drying roller 1, the telescopic combustion cylinder body 2 is of a 5-section telescopic structure made of high-temperature-resistant stainless steel plates, the 5-section telescopic structure is the conventional technology, the telescopic structure is not described in detail, one end of the telescopic combustion cylinder body 2 is fixedly connected with the drying roller 1, and the other end of the telescopic combustion cylinder body 2 is extended or shortened relative to the drying roller 1; the telescopic combustion cylinder 2 is connected with a support piece 3; the tail end of the supporting piece 3 is connected with a sliding piece 4, and the sliding piece 4 is a pulley; slider 4 cooperatees with the track 5 of locating in drying drum 2, and slider 4 slides on track 5, slides on track 5 through slider 4, drives flexible combustion barrel 2 for drying drum 1 extension or shorten.

Further, an interlayer cavity 6 is formed between the telescopic combustion cylinder 2 and the drying roller 1, and the mixture is heated by the residual heat of the flame of the combustor 7 on the outer wall of the combustion chamber, so that the aging of RAP is avoided.

When the mixture that adds the hot sand stone material and RAP formation needs to be dried, flexible burning barrel 2 stretches out, and the flame of combustor 7 burns the heated air in flexible burning barrel 2, utilizes the hot-air to heat the mixture, and the waste heat on the flexible burning barrel 2 outer wall also will make the mixture heating, has avoided the ageing of RAP like this.

When the grit material is heated alone to needs, this one end of combustor is shrunk to the flexible burning barrel 2 in the double-deck integral type heating drying roller of combined type, and the heat of the flame of combustor 7 can direct radiation to grit material surface heating aggregate, improves heating efficiency to reduce fuel consumption, reduction in production cost is favorable to overhauing the intermediate layer chamber 6 of drying roller, and has prolonged the life of combustion chamber.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.

Claims

1. The composite drying roller with the telescopic combustion chamber for heating RAP and aggregate is characterized by comprising a drying roller (1) connected to a rack, wherein a telescopic combustion chamber mechanism is arranged in the drying roller (1), the telescopic combustion chamber mechanism comprises a telescopic combustion barrel (2) arranged in the drying roller (1), one end of the telescopic combustion barrel (2) is fixedly connected with the drying roller (1), and the other end of the telescopic combustion barrel (2) is extended or shortened relative to the drying roller (1); the telescopic combustion cylinder (2) is connected with a support piece (3); the end connection of support piece (3) has slider (4), slider (4) cooperate with track (5) of locating in drying drum (2), and slider (4) slide on track (5), slide on track (5) through slider (4), drive flexible burning barrel (2) for drying drum (1) extension or shorten.

2. A composite drying drum with telescopic combustion chamber for RAP and aggregate heating according to claim 1 characterized in that a sandwich cavity (6) is formed between the telescopic combustion drum (2) and the drying drum (1).

3. The composite drying drum with retractable firebox for RAP and aggregate heating of claim 1, wherein said drying drum (1) is disposed at an angle of 4 degrees from the horizontal plane.

4. The composite drying drum with retractable firebox for RAP and aggregate heating according to claim 1, characterized in that the retractable firebox (2) is made of high temperature resistant stainless steel plate into 5-segment retractable structure.

5. Composite drying drum with telescopic combustion chamber for RAP and aggregate heating according to claim 1 characterized by the fact that said sliding elements (4) are pulleys.