Non-pair roller pneumatic demoulded briquette and production apparatus thereof

Abstract

The invention discloses a non-pair roller degassed molded coal and a preparation device thereof. Ignition holes with ignition layers are reserved in the vertical direction of the center of an adherence surface of molded coal, so as to solve the problem of quick ignition and complete combustion in the vertical and horizontal directions of the molded coal. Non-pair rollers with different diameters are adopted to form coal dust through compression molding. That is to say, the adhered opposite rotation of a big roller and a small roller with different diameters can enlarge the feed port space between the two rollers of the molded coal, thereby solving the problem of difficult feeding and compression molding due to the prior narrow pair roller feed port. In addition, the molding pit of the device has higher molding pressure on the molded coal. The molded coal has high strength and a high forming ratio. Therefore, the power consumption of a motor can be reduced by 50 percent, the dosage of a binder can be reduced by 30 to 40 percent, and high pressure forming without any binder can be applied to certain coal types. Through hole molded coal or non-through hole molded hole with ignition layers can be produced through adjusting the length of a core rod. Air pressure mold release after forming is adopted so as to ensure the integrity ratio of the molded coal.

Description

technical field [0001] The invention relates to civil and industrial molded coal and its roller-type high-low pressure molding equipment, in particular to a molded coal that is not degassed by rollers and its manufacturing equipment. Background technique [0002] The double-roller structure in the double-roller briquette forming equipment has a history of more than one hundred years. The traditional forming structure of the domestic and foreign civil and industrial roller-structured coal production equipment adopts the double-roller structure (that is, a pair of diameters Completely equal, with several half-shaped coal-shaped pits on the surface of the outer diameter), the traditional coal-to-roll (the diameter of the roller is equal) forming machine has no demoulding structure, and the molded coal is demoulded only by its own weight. The produced solid briquettes cause energy waste due to insufficient combustion. In order to solve the problem of insufficient combustion of ...

AI Technical Summary

Problems solved by technology

[0002] The double-roller structure in the double-roller briquette forming equipment has a history of more than one hundred years. The traditional forming structure of the domestic and foreign civil and industrial roller-structured coal production equipment adopts the double-roller structure (that is, a pair of diameters Completely equal, with several half-shaped coal-shaped pits on the surface of the outer diameter), the traditional coal-to-roll (the diameter of the roller is equal) forming machine has no demoulding structure, and the molded coal is demoulded only by its own weight. The produced solid briquettes are incompletely burned, resulting in energy waste

In order to solve the problem of insufficient combustion of briquettes, a Chinese patent discloses a briquette formed by pair of rollers and its manufacturing equipment (ZL 00135180.X, CN1117837C). It is proposed to set a mandrel in the middle of the briquette forming pressing zone between the pair of rollers , the briquettes with through holes produced by this equipment burn fully, but the parallel between the through holes and the briquette bonding surface actually reduces the briquette bonding area, affects the strength of the briquettes, and the briquettes are easily damaged during transportation and combustion It becomes two hemispherical solid briquettes; the feed inlets of the above two briquette roller forming equipment are narrow and long, and it is difficult for raw coal to enter the pressure pressing zone for forming, and it is even more difficult for raw coal to enter when a mandrel is set in the middle of the rollers. In the forming of the pressing area of ​​the pair of rollers, although the power of the motor at the feed inlet and the proportion of the binder are increased, the pelleting rate of the produced briquettes is difficult to meet the design requirements, which restricts the development of the industrialization of the briquettes; at the same time, the through holes are damaged The integrity of the compression ribs and the bonding surface on the briquettes is damaged, and the structural strength of the briquettes is destroyed, and the briquettes molded by the core rod are directly demoulded at the same time, and the damage rate is high. Based on the above reasons, the briquettes are formed The efficiency is low, and the integrity rate of the briquettes is not high when the roller is demolded

[0003] At present, the forming machine with double-roll structure generally adopts measures for forming: ① Increase the power of the feeding motor to increase the mold pressure of coal molding and improve the molding efficiency; ② Increase the proportion of adhesive usage to improve the demoulding of coal molding However, the measure ① consumes a lot of energy, and the measure ② increases the cost of the adhesive, and the difference in the strength of the produced briquettes leads to a high rate of molding damage, high damage rate in turnover transportation, and high rate of burning damage, especially for those with The burning and damage of perforated coal not only loses the characteristics of perforated coal, but also increases the dust emission and pollutes the environment. The real reason for these consequences is that the narrow and long feeding port created by the double-roll structure cannot meet the requirements for coal molding.

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