Piezoelectric bow-wave flame injection device
A flame injection and piezoelectric technology, applied in the direction of burners, lighting and heating equipment, etc., can solve the problems of inability to ensure complete combustion of fuel oil, uneven temperature field of combustion torch, small flame injection angle, etc., and achieve easy control and flame injection Increased angle and flame strength, the effect of sufficient fuel combustion
Inactive Publication Date: 2009-02-04
NANJING UNIV OF SCI & TECH +1
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Problems solved by technology
The above-mentioned flame injection device, because the high-pressure fuel oil is directly sprayed from the oil pipeline, the problems of this structure and the method of atomization are: 1, the flame injection angle is small, generally 120 degrees; 2, the atomization is not complete, and cannot Ensure that all the fuel is burned; (3) The temperature field of the burning torch is uneven and the strength is insufficient, not only the heating is slow, but also the overall temperature of the heated material cannot be kept uniform
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[0010] The present invention will be further described in detail by taking the piezoelectric shock wave flame injection device equipped with LB5000 type asphalt mixture mixing equipment as an example in conjunction with the accompanying drawings.
[0011] see figure 1 , figure 2 , the piezoelectric shock wave flame injection device is composed of a piezoelectric shock wave device 1, a high-pressure fuel pipe 2, a fuel flow controller 3, a cavitation chamber 4, a fuel atomizing head 5, a combustion chamber 6, a piezoelectric igniter 7, Compressed air pipe 8 is formed, and the cylinder thickness of combustion chamber 6 is 0.8cm, and its opening shape is conical cylindrical shape, and opening shape also can be trapezoidal cylindrical shape, and piezoelectric igniter 7 is installed on the conical cylinder wall, and combustion chamber 6 bottom inner diameters is 20cm, and the depth is 6cm. Since the diameter of the drying cylinder of the LB5000 type asphalt mixing plant is 1.5m, ...
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The invention discloses a piezoelectric shockwave flame spraying device for a drying cylinder of an asphalt mixing plant, which comprises a high-pressure oil-conveying pipe, a fuel oil atomizing nozzle, a combustion chamber with an igniter and a compressed air pipe communicated with the combustion chamber. The invention is characterized in that: the outlet of the high-pressure fuel oil is provided with a piezoelectric shockwave cavitation device in order to make the input high-pressure fuel oil after cavitation and atomization mixed with the compressed air, which not only renders the mixing between the fuel oil and the compressed air more uniform, but also renders the combustion after ignition more sufficient, the flame intensity high and the temperature field uniform; according to the requirements, the invention can facilitates the spray angle of flame and the flame intensity obviously improved through adjusting the fuel oil pressure and flow rate as well as the current of a shockwave device, and the maximum spray angle of flame can reach 160 degrees. The invention has the advantages of reasonable structure, convenient and flexible control and safe reliability, thereby being widely used in the asphalt mixtures for the highway.
Description
a technical field [0001] The invention relates to a flame injection combustion device, in particular to a piezoelectric shock wave flame injection device for a drying cylinder of asphalt mixture mixing equipment. Two background technology [0002] Asphalt mixture for highways is made by mixing stones and asphalt, and stones generally need to be heated and dried in mixing equipment before they can be mixed with asphalt to finally obtain asphalt mixture. In the prior art, the hot air of flame combustion is mainly used as the heating and drying medium to heat and dry the stones in the drying cylinder, and the heating and drying medium is provided by the flame jet combustion device, "Construction Machinery and Maintenance" 2005 Issue No. 5 of 2019 disclosed a traditional flame injection device used in the gravel drying cylinder of domestic LBQ type asphalt mixture mixing equipment. It is mainly composed of oil pipelines, atomizing nozzles, combustion chambers, igniters and compr...
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IPC IPC(8): F23D11/36F23D11/22
Inventor 钱林方石秀东江剑赖长缨王显会陈龙淼徐亚栋邓昕马晓宇陆元明陆晏陆国彦
Owner NANJING UNIV OF SCI & TECH