Dust cleaning apparatus for locomotive air filter
Technical field
The invention belongs to railway locomotive air filtering technical field, relate in particular to a kind of novel dust cleaning apparatus for locomotive air filter.
Background technique
General locomotive all is to adopt cyclone air cleaner and the paper air cleaner two-stage filtering mode air to the diesel engine supplying clean.The dust granule that cyclone air cleaner leaches is fallen in the dust precipitation chamber of below.These dust collection are collected together needs artificial the removing more the time.As in time not removing, when working conditions change, dust can be taken home on the contrary sometimes.Technological scheme afterwards is communicated with dust precipitation chamber with the pipeline of a band backward stop valve with the pressurized machine gas exhaust piping, utilize the pressurized machine exhaust that the dust in the dust precipitation chamber is taken out of.But, when operating mode changes,, may get up the dust blowback in the dust precipitation chamber on the one hand because check valve often can not in time be closed, also high-temperature flue gas may be blown into paper air cleaner on the other hand, cause papery filter stamen on fire.The technological scheme that also has is to adopt special fan outwards to aspirate the interior dust of dust precipitation chamber.But this scheme cost is higher, also the consumption of power energy.If this rotation speed of fan is constant, when diesel engine was in the slow-speed of revolution, the suction of blower fan also can be excessive relatively, causes the air feed deficiency to diesel engine.
Summary of the invention
Purpose of the present invention overcomes the deficiency of above-mentioned prior art exactly, provide a kind of simple in structure, cost is lower, dust discharge is effective, need not safeguard, safe and reliable novel locomotive air-strainer dust removal apparatus.
The object of the present invention is achieved like this: a kind of dust cleaning apparatus for locomotive air filter, it is characterized in that injection air-flow path (6) being arranged, the dust precipitation chamber (4) that dust discharge through hole (5) is inboard with car body side wall (2) and injection air-flow path (6) UNICOM in the outside in the arranged outside of car body side wall (2).
In order to realize purpose of the present invention better, the two ends of described injection air-flow path (6) are outer thick interior thin horn mouth (7).
In order to realize purpose of the present invention better, described dust discharge through hole (5) is positioned at the position between the thin end of two horn mouths (7).
Adopt the technological scheme of this invention, the air-flow dedusting that produces when utilizing locomotive operation, saved special-purpose dust discharge power equipment, structure is simplified greatly, cost reduces significantly, and need not manual maintenance, the dust in the dust precipitation chamber with long-pending with clearly, do not have the blowback phenomenon, stopped the phenomenon that high-temperature flue gas enters paper air cleaner.Because the air-flow velocity of injection air-flow path is to be directly proportional with the motion speed of locomotive, so can not influence the air feed to diesel engine.
Description of drawings
Accompanying drawing 1 is the structural representation of the embodiment of the invention.
Accompanying drawing 2 is that A-A in the accompanying drawing 1 is to generalized section.
Embodiment describes embodiments of the invention in detail below in conjunction with accompanying drawing.Referring to Fig. 1, it is the diesel engine air supply that locomotive adopts cyclone air cleaner (3) and paper air cleaner (1) two-stage filtering mode.Dust precipitation chamber (4) is arranged on the inboard of locomotive car body side wall (2), the below of cyclone air cleaner (3), injection air-flow path (6) places the outside of car body side wall (2), the dust precipitation chamber (4) that the dust discharge through hole (5) on car body side wall (2) is inboard with car body side wall (2) and injection air-flow path (6) UNICOM in the outside.Exhaust hole can adopt various ways such as array of circular apertures, narrow long flat mouth, and present embodiment is narrow long flat mouth.
For clarity sake, the relative accompanying drawing 1 of the dimension scale of accompanying drawing 2 has amplified.The two ends of injection air-flow path (6) are outer thick interior thin horn mouth (7).Dust discharge through hole (5) on the car body side wall (2) is distributed on the position that is positioned between the thin end of two horn mouths (7).
Hollow arrow in the accompanying drawing is represented the air that is filtered, supplies with diesel engine through cyclone air cleaner and the filtering of paper air cleaner two-stage.When locomotive travels on the line, air-flow outside the car body is after the end inflow of injection air-flow path (6), flow out from the other end apace again, because the underbalance effect that the interior air-flow of injection air-flow path (6) produces, make the interior dust granule of dust precipitation chamber (4) by dust discharge through hole (5) sucking-off, taken away by air-flow.