A two-stage swirl urea injector
A technology of injector and urea, applied in the direction of machine/engine, mechanical equipment, engine components, etc., can solve the problems of difficult to meet the atomization effect, flow consistency, poor processing technology, and difficult to ensure the consistency of atomized particle size.
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[0028] Structure of the present invention, further concrete description is as follows in conjunction with accompanying drawing:
[0029] see Figure 1 to Figure 6 , the two-stage swirl urea injector shown in the figure mainly includes the electromagnet part 12, the oil inlet joint, the iron core spring assembly and the injection valve assembly. The oil inlet joint includes a filter screen support 10, a filter screen 11 and an O-ring seal 9. A middle hole 1003 is arranged in the filter screen support 10 , and the filter screen 11 is placed in the middle hole 1003 .
[0030] The iron core spring assembly includes an iron core 8 , a spring upper seat 7 and a spring 6 .
[0031] The injection valve assembly includes a valve stem 5 , a nozzle body 4 , a steel ball 3 , a valve seat 2 , and a nozzle plate 1 .
[0032] The valve seat 2 is fixed at the lower end of the inner hole 402 of the nozzle body 4 by laser welding. See especially figure 2 and image 3 , The valve seat 2 i...
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