Fluid-atomizing mechanical nozzle

Abstract

The invention provides a fluid-atomizing mechanical nozzle, and relates to a nozzle. The fluid-atomizing mechanical nozzle comprises a valve body provided with a fluid inlet, a liquid sheet, a spring,a valve needle, a cyclone seat and a valve seat, wherein a valve needle through hole I is formed in the middle of the liquid sheet, a counterbored hole is formed in the front end of the cyclone seatand is in sleeve joint with the rear end of the valve seat, a valve needle through hole II is formed in the middle of the rear end of the cyclone seat, cyclone holes are uniformly formed in the periphery of the valve needle through hole II, and the valve needle through hole II and the cyclone holes communicate with the counterbored hole; the spring is mounted between the bottom end of the liquid sheet and the cyclone seat; and a cyclone cavity III communicating with the cyclone holes of the cyclone seat is further formed in the rear end of the valve seat and communicates with a cyclone cavityI formed at the front end of the valve seat. According to the fluid-atomizing mechanical nozzle, under differential pressure and centrifugal actions, the conical atomizing effect of fluid is improved,atomizing angle and area are increased, the mechanical nozzle can work stably in high-temperature and high-speed gas for a long time, the fluid is effectively prevented from blocking spray holes dueto high-temperature gumming, and therefore, the service life of the product is prolonged.

Description

technical field [0001] The invention relates to a nozzle, in particular to a fluid atomizing mechanical nozzle. Background technique [0002] Diesel engine particulate matter and diesel engine exhaust pollutants are increasingly polluting the earth's environment and affecting human health. In the VI stage, DPF was used to control the emission of soot particulate matter. The accumulation of particulate matter in the original system in the particulate filter will cause the exhaust back pressure of the diesel engine to increase. When the exhaust back pressure is increased, the performance of the diesel engine begins to deteriorate, so the carbon soot particles must be removed regularly to restore the particle filter to its original working state, so the DPF (particulate filter) is added to the national VI system to treat the carbon soot particles Carry out capture and collection, and then burn the collected carbon soot and other substances by adding mechanical nozzles as the ma...

AI Technical Summary

Problems solved by technology

However, the mechanical nozzles currently used cannot meet the requirements of atomization quality, atomization angle and atomization area

The invention patent with the authorized announcement number "CN207178000U" discloses a fuel nozzle for DPF regeneration system. The sealing form of the valve stem and valve seat of the nozzle helps to prevent carbon deposition, but the nozzle still has the following disadvantages: ( 1) There is a risk of poor atomization; (2) There is a risk of unstable flow; (3) The spray angle cannot be adjusted; (4) The side hole is blocked by a spring and the risk of flow fluctuations

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