Biomass shaftless spiral feeder
A shaftless screw and feeder technology, which is applied in the direction of fuel supply, combustion method, block/powder supply/distribution, etc., can solve the problems of motor burnout, screw deformation and damage, and material jam, etc. increase, the effect of motor load balancing
Inactive Publication Date: 2011-11-23
GUANGZHOU DEVOTION THERMAL TECH
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Problems solved by technology
However, due to the difference in the texture of biomass fuel, such as hardness, length, looseness, impurity content, etc., all affect the delivery effect
For example, some biomass fuels have high hardness, long size, and irregular sizes, and the fuel contains impurities such as stones, which often cause the conveyor to jam during the screw conveying process, and the rotation is blocked, resulting in deformation and damage to the spiral blades; Some viscous, loose biomass fuels such as bark, straw, etc. are easily entangled on the shaft, causing the motor to overload and burn
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[0019] Such as figure 1 As shown, the shaftless screw feeder is composed of a motor 1, a trough 3, a screw blade 7 and a liner 4. Motor 1 adopts a cycloidal pinwheel reducer with a power of 7.5Kw and a speed of 8.3rpm. The speed is adjusted by frequency conversion, and the adjustment range of the conveying volume is 5.5-16.5m 3 / h. Feed trough 3 is a U-shaped closed structure ( figure 2 ), made of high-quality carbon steel, with a smooth and flat surface. Feed trough 3 is arranged horizontally (horizontally), supported and fixed by support 2 . One end of the trough 3 close to the motor is the feed end, while the other end is the discharge end. The feed end is provided with a feed port and 10 inspection ports, and the discharge end is provided with a discharge port 5 and an inspection port 6. The inspection port is convenient for observing the motor and the conveying state, and is also conducive to convenient maintenance. A temperature sensor 9 and a fire extinguisher 8 a...
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Abstract
The invention discloses a biomass shaftless spiral feeder, wherein a motor directly drives shaftless spiral blades; the thickness of each spiral blade is 10-30 mm, and the interval between two adjacent spiral blades is 260-460 mm; the section of a material groove is U-shaped, and the bottom part of the material groove is paved with a lining plate; and the material groove is provided with a temperature sensor and a fire extinguisher. The shaftless spiral blades are used to eliminate the influence from a central rotating shaft to the transmitting of biomass fuel, and prevent the winding and jamming phenomenon; as the interval space among the spiral blades is increased, and the thickness of each spiral blade is increased, the spiral blades can resist the resistance of a hard block, and cannot deform, and the load of the motor is balanced. Therefore, the feeder disclosed by the invention is suitable for the transmitting of biomass fuels, such as blocky biomass fuels, large-particle biomass fuels, loose fuels, barks, roots and the like, and the transmission amount is increased by about half.
Description
technical field [0001] The invention belongs to material conveying equipment, in particular to a feeder for conveying biomass fuel to a biomass boiler. Background technique [0002] In the biomass fuel feeding equipment, the screw feeder is often used for the feeding system of the biomass boiler. The screw feeder is generally composed of a conveyor body, inlet and outlet ports and a driving device, in which the conveyor body is composed of a rotating shaft, screw blades and a material tank. The rotating shaft is installed on the bearing seats at both ends of the material trough through bearings. When the biomass fuel is added from the feed port, as the motor drives the shaft to rotate, the fuel is pushed forward by the screw blades to complete the feeding operation to the boiler. However, due to the differences in the texture of biomass fuel, such as hardness, length, looseness, impurity content, etc., all affect the delivery effect. For example, some biomass fuels have h...
Claims
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Inventor 常厚春马革张湘波张开辉陈燕芳许浩达
Owner GUANGZHOU DEVOTION THERMAL TECH