SU436912A1 - Drying machine for asphalt concrete mixer - Google Patents

Description

one

The invention relates to drying installations for asphalt concrete mixers and can be used in areas where stone materials are dried and heated.

There are known drying units for asphalt concrete mixers, containing loading and unloading boxes and a heat pump device, placed at the ends of a vrash, a drum, in which a transverse wall of radial blades is fixed to the inner box behind the loading box.

The purpose of the invention is to increase the efficiency. installation and reduction of ash from vrash. Iyush, egos drum fine particles of the material being processed.

For this, the radial blades of the transverse wall are inclined to the longitudinal axis 6apai6aiHa with the formation of helical channels. The inlet and outlet sections of each screw channel, perpendicular to the drum axis, are displaced relative to each other around the circumference of the drum.

The iKpOMe toto, the blades of the transverse wall in their parts adjacent to the inner wall of the drum, are made with bends from their radial part directed towards the rotation of the drum.

FIG. 1 shows the proposed drying unit, general view; in fig. 2 - loading box and rotating drum, cha2

stichny longitudinal section; in fig. 3 shows section A-A in FIG. 2; in fig. 4 is a section BB in FIG. 2; in fig. 5 shows a section B-B in FIG. four; in fig. b - internal surface scan

pipeline from the installation site of the transverse wall with traces of radial blades; in fig. 7 - radial blade; in fig. 8 - section G-Y in FIG. 7

The drying installation of the asphalt concrete mixer includes a rotating drum 1 heated from the inside. At one end of the drum there is a loading box 2 with tray 3, and the other one is equipped with a discharge box 4 and a drip tray 5. The rotating drum rests on four support rollers 6 fixed to frame 7, which in the working position is tilted by an angle a in the direction of movement of the material being processed. Barabap is held from axial thrust by stubborn

roller 8. To the outer surface of the drum on the compensators 9, supporting retaining rings 10 are supported, supported on rollers 6, and the cogwheel 11 is driven. The driving gear 12 is driven into rotation by a system consisting

of the motor 13, the gear 14, bearings 15 and chain couplings 16.

On the side of the product entry into the drum on the frame 7 is installed the loading box 2, which serves to feed the material for processing and remove the spent tenon

tel. Tray 3, through which the material enters the drum, enters the drum with its output element, inside which there are flip-down blades 17, feeding the material to the lifting blades 18. The inner part of drum 1 is a longitudinal channel 19. Directly behind the output element of the tray, across the channel 19, there is a transverse wall, formed by radial blades 20, inclined to the axis of the drum at an angle | 3. Radial blades 20 form oblique channels 21. The inlet section of each oblique channel is circumferentially offset with respect to the output section of the same channel by an amount equal to the width of the channel or greater than this width in the specified direction. This value is indicated in the drawing by the numeral 22. For convenience of fastening the blades 20, a pipe 23 is provided with a locking clip 24. The blades 20 are fixed to the inner surface of the drum 1, as well as to the pipe 23 and a stopper 24 of the blade; blades polibibny with limbs at an angle y, directed in the direction of rotation of the pipeline. The limb is adjacent to the inner surface of the pipeline.

The installation works as follows.

The drive of drum 1 is turned on and the furnace 5 is started. After the drum is warmed up, the material is fed through the loading box 2 and tray 3. The material caught in the rotating drum is picked up by the lifting blades 18 and then the blades 20 of the transverse wall. The reclining blades 17 feed material that has fallen onto the blades 18 and 20. The blades 20 evenly distribute the material across the section of the drum 1. Material

moves along the screw channels 21 and further along the drum to the unloading box, and from there to the subsequent processes of preparing asphalt concrete. A transverse wall with paclon blades retains fine particles of the material being processed on its blades x. The bends of the blades discard the material from the periphery to the center, improving the uniform distribution of the product over the cross section.

drum and the use of heat in the drum.

Subject invention

Claims (2)

1. Drying installation of an asphalt concrete mixer, containing loading and unloading boxes and a furnace device located at the ends of a rotating drum, in which a transverse wall of radial blades is fixed behind the loading box on its inner wall, so as to increase the speed to. pd installation and reduction of ablation of small parts of the material being processed from a rotating drum; the radial blades are inclined to the longitudinal axis of the drum with the formation of screw channels, with the input and output sections of each screw channel perpendicular to the longitudinal axis drum, shifted relative to each other around the circumference of the drum. 2. Installation according to claim 1, characterized in that the blades of the transverse wall in their parts adjacent to the inner wall of the drum are made with bends from their radial part directed in the direction of rotation of the drum. Bv Fig / 2i Product 20 Fig.b 2020 Pig 7 Rig.8