Autonomous heating type atomizer

Abstract

The invention discloses an autonomous heating type atomizer, and belongs to the technical field of heavy metal on-line monitoring instruments. The autonomous heating type atomizer comprises an atom generator and an electric heating wire, wherein the upper portion opening of the atom generator is provided with an ignition coil, the atom generator is provided with an inner tube, an outer tube, and a first side port and a second side port led out from the inner tube and the outer tube, the electric heating wire is wound on the outer wall of the upper portion of the atom generator, the atom generator part wound by the electric heating wire is provided with an insulating bushing, an upper end pressing sleeve covers the outer portion of the atom generator, the bottom portion is provided with a support seat, the upper end pressing sleeve and the support seat are assembled into the integration to clamp the atom generator and the insulating bushing inside, the bottom portion of the support seat is provided with a connection column connected to a position adjusting device, and the first side port and the second side port of the atom generator are respectively led out from the side wall of the upper end pressing sleeve. According to the present invention, the inner wall temperature gradient of the atomizer is small, such that the atomization rate is remarkably improved; and with the application of the atomizer to construct the atomic fluorescence instrument, the sensitivity is obviously increased, and the ignition success rate is high.

Description

technical field [0001] The invention relates to an atomizer, in particular to a self-heating atomizer, which belongs to the technical field of heavy metal on-line monitoring instruments. Background technique [0002] An atomizer is a device that converts atoms from a ground state to an excited state. The currently used atomizer has many components, the structure is not compact, and the requirements for the cooperation between the parts are high, which leads to the high cost of the overall processing of the assembly; in addition, due to the large size of the assembly, the structure is not compact enough, and the positioning of the parts is not enough, so it cannot be well The degree of freedom of each part is well controlled, and it often happens that the fit between parts is not in place, and the position with other components cannot be guaranteed. The operator of the instrument needs to make repeated adjustments to adjust the position of the atomizer to a more suitable posi...

AI Technical Summary

Problems solved by technology

The currently used atomizer has many components, the structure is not compact, and the requirements for the cooperation between the parts are high, which leads to the high cost of the overall processing of the assembly; in addition, due to the large size of the assembly, the structure is not compact enough, and the positioning of the parts is not enough, so it cannot be well The degree of freedom of each part is well controlled, and it often happens that the fit between parts is not in place, and the position with other components cannot be guaranteed. The operator of the instrument needs to make repeated adjustments to adjust the position of the atomizer to a more suitable position. position, the adjustment efficiency is low, and the labor intensity of the operator is increased

On the other hand, the currently used atomizer adopts a swimming ring-type heating wire installed at the top, and the heating of the atom generator mainly depends on thermal radiation, which will cause a gradient in the temperature inside the tube of the atom generator, with high temperature at the upper end and lower temperature at the lower end. In addition, since the gas at room temperature is constantly flowing in the tube, when the low-temperature gas flows out of the nozzle, it will quickly take away a large amount of heat energy on the inner wall of the atom generator, resulting in an increase in the temperature gradient of the inner wall of the atom generator, and the temperature at the lower end of the tube will decrease. Far below the temperature required by the system, these unfavorable factors will greatly reduce the atomization efficiency of the elements in the tube

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