CN2897604Y

CN2897604Y - High-speed agitation cylinder against wedging

Info

Publication number: CN2897604Y
Application number: CN 200620070665
Authority: CN
Inventors: 肖羽宇; 徐宝元; 杨宝林; 崔亮; 林卫军
Original assignee: HUACHEN HUATONG ROAD BUILDING MACHINERY CO Ltd ZHENJIANG CITY
Current assignee: HUACHEN HUATONG ROAD BUILDING MACHINERY CO Ltd ZHENJIANG CITY
Priority date: 2006-03-28
Filing date: 2006-03-28
Publication date: 2007-05-09
Anticipated expiration: 2016-03-28

Abstract

The utility model relates to an asphalt mixing equipment blade type mixing crock, in particular to an anti-wedging mixing crock belonging to pavement construction machinery. The anti-wedging high speed mixing crock comprises a crock body and a mixing shaft arranged in the crock body; wherein the mixing shaft is equipped with blades, and a wear resistant lining board is arranged on the arc shaped bottom surface of the crock body; an eccentric distance is arranged between the gyration center of the mixing shaft and blades and the circle center of the bottom arc of the crock body, thus the distance between the running track of the top end of the blades and the wear resistant lining board increases gradually in the running direction of the blades. The utility model has the advantages of reasonable structure, few wear of the blades and the wear resistant lining board, low energy consumption, excellent mixing quality and high productivity.

Description

Anti-wedging type high speed mixer drum

Technical field

The utility model belongs to field of road engineering machinery, relates to the structure of asphalt mixing plant oar blade type a mixing bowl, specifically is a kind of anti-wedging a mixing bowl.

Background technology

It is that asphalt mixing plant prepares the main device in the compound operation that oar blade type is mixed cylinder.In mixing cylinder,, evenly stir into needed finished product bituminous concrete mixture by the measured sandstone material of certain match ratio scale, breeze and pitch.Oar blade type is mixed cylinder and is mainly included cylinder body and be installed in the interior a pair of shaft of cylinder body side by side, and the blade that is used for stirring is installed on the shaft, on the cylinder body bottom surface of circular arc abrasion-proof backing block is set.When mixing cylinder working, sink is mixed the blade at cylinder bottom portion place in compound, and compound is moved along mixing cylinder axle vertical and horizontal, and loose compound is also upwards thrown throwing to it.Therefore, form the loose bed of material on the top of mixing cylinder, its particle is in the state that flies to throw, and is positioned at lower floor's compound of mixing cylinder bottom portion and then is in stability.The rotating speed of mixing the oar axle is big more, then flies to throw stratum granulosum expansion more.Theoretical research and test show, under the certain situation of the established angle of blade countershaft (generally at the 40-45 degree), each composition is along every part of material volume equally distributed speed in the compound, depends on the tip speed of the blade that guarantees that compound circulates at a high speed along the cylinder body vertical, horizontal.

Conventional test shows, when blade tips speed during greater than 2.7m/s, in the gap of cylinder body 1 bottom and blade tips, will produce too much rubble wedging phenomenon, promptly shown in figure accompanying drawing 1 and accompanying drawing 2, because blade 3 ', shaft 2 ' the centre of gyration and cylinder body 1 ', the circular arc center of circle of liner plate overlaps, in the blade motion process, blade is from beginning near liner plate to leaving liner plate, and the gap between blade and the liner plate is constant, when the gap between stone diameter and the blade liner plate is suitable, building stones wedging phenomenon takes place easily, this moment blade, the condition of work very severe of liner plate, result blade liner plate are often squeezed building stones broken, influence the grating of finished product material, reduce product quality, or blade carries building stones secretly by force by the circular arc district, bringing sharp wear for the blade liner plate, or the integrated motion of the first two kind, the result brings huge power consumption, increase wearing and tearing and the unsuitable pulverizing building stones of mixing the cylinder part.The task performance that the equipment of influence is brought into normal play.Based on this reason, existing this kind equipment generally is controlled at blade tips speed≤2.7m/s, has limited the raising of the operating efficiency and the production capacity of equipment.

Summary of the invention

Technical problem to be solved in the utility model is the above-mentioned defective that overcomes prior art, and a kind of rational in infrastructure, little to the wearing and tearing of blade and abrasion-proof backing block, power consumption is low, mixing quality good, production capacity is high anti-wedging type high speed mixer drum is provided.

Anti-wedging type high speed mixer drum of the present utility model includes cylinder body and is installed in the interior shaft of cylinder body, blade is installed on the shaft, be distributed with abrasion-proof backing block on the circular arc bottom surface of cylinder body, it is characterized in that: an eccentric distance is arranged between the center of circle of the centre of gyration of described shaft and blade and cylinder base circular arc, the running orbit of blade tips and the distance between the abrasion-proof backing block are increased on the traffic direction of blade gradually.Described eccentric distance can comprise a horizontal eccentric throw x and a vertical eccentric throw y, and laterally the big I of eccentric throw x and vertical eccentric throw y is chosen between 2mm～40mm according to the different technologies requirement of stirring material.

The utility model is because with shaft and blade and cylinder base and the eccentric setting of abrasion-proof backing block, thereby in the blade motion process, blade is from beginning near liner plate to leaving liner plate, gap between blade and the liner plate progressively increases, when between stone diameter and the blade liner plate near the gap when suitable, though the trend that the building stones wedging takes place is arranged, but further motion along with blade and building stones, gap between blade and the liner plate is in continuous increase, also constantly increased by the space of chockstone, when stone is moved with blade, a downward displacement is arranged, thereby avoided the generation of wedge material phenomenon, this moment blade, abrasion-proof backing block, have only smaller wearing and tearing between the building stones, the situation of having avoided building stones to pulverize has reduced mixing the impact of cylinder, greatly reduce power consumption, improved the quality of finished product compound.Because this structure low-power consumption, the advantage of light wearing and tearing, make and on a mixing bowl of tonnage, improve blade tips speed, shorten mixing time and become possibility, broken through the bottleneck of a mixing bowl high-speed stirred, according to actual verification, use the blade tips speed of the high-speed stirred cylinder of the utility model structure can reach 2.8-3.5m/s, effectively raise the production capacity of a mixing bowl.

Description of drawings

Fig. 1 is a mixing bowl cross section structure schematic diagram of prior art;

Fig. 2 is the local structure for amplifying schematic diagram of the A of Fig. 1;

Fig. 3 is a cross section structure schematic diagram of the present utility model;

Fig. 4 is the position view of the shaft centre of gyration of the present utility model and cylinder body bottom surface center of arc.

The specific embodiment

As shown in Figure 3, Figure 4, in the cylinder body 1 of this anti-wedging type high speed mixer drum shaft 2 is installed, blade 3 is installed on the shaft, be distributed with abrasion-proof backing block on the circular arc bottom surface 4 of cylinder body, an eccentric distance is arranged between the center of circle of the centre of gyration of shaft and blade and cylinder body bottom surface circular arc, the running orbit of blade tips and the distance between the abrasion-proof backing block are increased on the traffic direction of blade gradually.As shown in Figure 4, eccentric distance can comprise a horizontal eccentric throw x and a vertical eccentric throw y.

Claims

1, a kind of anti-wedging type high speed mixer drum, include cylinder body (1) and be installed in the interior shaft (2) of cylinder body, blade (3) is installed on the shaft, be distributed with abrasion-proof backing block on the circular arc bottom surface of cylinder body, it is characterized in that: an eccentric distance is arranged between the center of circle of the centre of gyration of described shaft and blade and cylinder base circular arc, the running orbit of blade tips and the distance between the abrasion-proof backing block are increased on the traffic direction of blade gradually.

2, anti-wedging according to claim 1 is adjusted a mixing bowl, and it is characterized in that: described eccentric distance can comprise a horizontal eccentric throw x and a vertical eccentric throw y, and laterally the size of eccentric throw x and vertical eccentric throw y is respectively at 2mm～40mm.