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The two-axis blade mixer makes full use of the principle of convection mixing, that is, the upcast motion of the material in the mixer is used to form a flowing layer, resulting in instant weight loss, so as to achieve the mixing effect. The mixing chamber of the machine is W-shaped, equipped with a pair of axes rotating in the opposite direction, each axis is installed with a certain Angle, a certain number and overlapping blades, forming a flow layer in the mixing chamber with a certain circular speed, and the material in the layer is mixed under the convection mixing principle, and in an instant in a state of weightloss, so as to obtain a uniform mixture. The turning speed of the machine is 50%-80% of the critical speed, and when the blade distance is small, it can be close to the critical speed.
The material in the mixer is acted by two opposite rotating rotors to carry out compound motion. The blade drives the material to rotate counterclockwise along the inner wall of the machine groove. On the one hand, it drives the material to turn left and right, forming a weightlessness zone at the intersection and overlap of the two rotors. In this area, regardless of the shape, size and density of the material, the material can float up and be in a state of instantaneous weightlessness. Thus, the effect of fast and soft mixing is achieved.
Mixing method of dual axis non-gravity mixer
one Convection mixing: As shown in Figure 1, the materials in the two axis zones will flow axially respectively. After reaching the end of the shaft, due to the action of a set of small-angle blades at the end of the shaft, the materials will move to the other axis zone, so that the materials in the whole machine will form a horizontal circulation flow; On the other hand, the materials in the two axis regions will move around their respective axes respectively at the same time, and each axis region will form a vertical plane and circulating flow of materials. And the materials at the junction of the two axis zones also flow crosswise to the other axis zone. Due to this multi-directional compound circulation convection, the material inside the machine will move more and faster from one place to another.
2. Shear mixing: the material forms a shear plane with each other under the action of the blade, and the clumps or particles of the material slide and collide with each other to form shear mixing.
3. Diffusion mixing: The diffusion mixing effect exists in the whole machine, but it is more significant in the area near the center line of the machine, because the two rotors rotate synchronously in reverse, and there is a motion overlap area of the blade in the body, which makes the material near the center line subject to the action of the rotating blade. The material turned by the blade in this area is scattered in the air due to the inertial action at the moment it leaves the blade. The materials rub and penetrate each other, forming a fluidization area near the center line of the body. Each particle can move freely in the fluidization region, and the material particles are fully diffused and mixed in free movement. The friction in this area is small, the mixing effect is light and soft, and the mixture is not isolated. In particular, when particulate materials (trace additives) are in the fluidized state, the mixing effect of diffusion is better.
The formation of fluidization area, coupled with convection mixing and shear mixing, makes the mixing speed and mixing uniformity of the two-axis blade mixer faster than that of the general mixer
故障现象 | 故障原因 | 排除方法 |
电机无力过热 | 1. 电机二相运行； 2. 电机内部短路； 3. 长期超负荷运行； 4. 电压过低 | 1. 停机，检查电器设备所有连接部位； 2. 减少负荷 3. 电压稳定后再工作 |
混合机有异常声响 | 1机内有异物 4. 链条松动 5. 转子某部位开焊断裂 | 1. 排除异物 2. 调整链条至涨紧或更换链条 3. 修复转子 |
轴承过热 | 1. 润滑油过多或过少 2. 轴承损坏 3. 皮带过紧 4. 长期超负荷运行 5. 油封损坏 | 1. 按规定加油 2. 更换适当轴承 3. 调整适当 4. 按规定负荷工作 5. 更换新油封 |
减速机无输出 | 电机运转正常减速机不转、连接处销箭已严重磨损 | 更换新销键 |
减速机发热 | 缺油或机内部件损坏 | 加油至规定位置修复减速机或更换 |
提升机不转、漏料 | 1. 负荷过重 2. 轴承坏损 3. 密封圈坏 | 1. 减少负荷 2. 更换 3. 更换 |
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