CN201380023Y

CN201380023Y - Combined air filter

Info

Publication number: CN201380023Y
Application number: CN200920011005U
Authority: CN
Inventors: 孔丽君; 刘俊杰
Original assignee: CNR Dalian Locomotive Research Institute Co Ltd
Current assignee: CRRC Dalian Institute Co Ltd
Priority date: 2009-02-24
Filing date: 2009-02-24
Publication date: 2010-01-13
Anticipated expiration: 2019-02-24

Abstract

The utility model relates to a combined air filter for a ventilation system or a cooling device of a locomotive and a motor train unit, which is characterized in that the combined air filter is provided with a coarse filter and a fine filter from the outside to the inside along the air flow direction, and the two components are connected by a connecting piece, wherein the coarse filter can be a steel wire mesh filter or a ripple grid filter; the fine filter is a centrifugation filter; and the connecting piece can be a threaded fastener or can be a quick locking fastener. The combined air filter has compact structure, easy maintenance, high filtering efficiency, low resistance, excellent water resisting performance, reliability, practicability and the like, can improve the cleanness of the ventilation system of the locomotive, solve the dirt problem of the cooling device of the motor train unit, prolong the cleaning cycle, reduce the maintenance workload, and finally achieve the aims of reducing the cost of life cycle and improving economic benefits.

Description

The combined air air filter

Technical field

The utility model relates to locomotive, EMUs ventilating system or cooling device combined air air filter, belongs to the heat transfer technology field.

Background technology

Traditionally, China's locomotive car body ventilates and mainly adopts following several pattern with air cleaner: the brown net+nonwoven of hair, multilayer stainless steel cloth, watt rib formula shutter, wherein the principal mode diesel locomotive generally adopts multilayer stainless steel wire web filter, the general watt rib formula louver filter that adopts of principal mode electric locomotive.Brown net of hair and multilayer stainless steel cloth all belong to the collision type filter, and brown net of hair or stainless steel cloth that it is handled through antistatic by multilayer are formed, and leave certain interval between each net and collect dust as accumulation area, but actual dust collecting effect and bad.This initial resistance of filter is smaller, but owing to lack stronger dust self-purification capacity, therefore, along with the increase of dust containing capacity, fibre gap is more and more littler, and resistance is also increasing, will block fully as untimely cleaning.Corrugated shutter is made up of with the staggered button mutually of certain spacing the identical V-type section bar of 2 row's shapes, and promptly the V-type opening of 2 row's section bars is relative.Wind enters from shutter V-type bottom direction, by the change of airflow direction in the passage, under action of centrifugal force, makes dust, rainwater and flow separation, plays a role in filtering.But because the unexpected break-in of air-flow in the passage causes the filter resistance value higher; In addition,, dust, rainwater can not fully be separated, cause filter efficiency lower with air-flow because this kind filter interior air duct is very short; And because the V-type plate washer is a semi-open-type, dust in the filter and rainwater are in infall process, and the air-flow after being easy to be filtered is taken away again, causes secondary pollution, makes the filter filter efficiency lower.

Along with the introduction of high-power electric locomotive and high speed electric car group, rolling stock is more and more higher to the requirement of ventilating system, and a kind of novel air cleaner-centrifugation formula filter comes into operation.This centrifugation formula air cleaner is made up of parts such as frame, fuse, disposal boxes.Fuse is installed in the frame, and the frame lower end is provided with disposal box, and the disposal box bottom is provided with dust-exhausting port, and dust, rainwater that fuse is collected can directly be discharged outside the car by the dust-exhausting port of disposal box bottom.It is moderate that centrifugation formula filter has resistance, to the filter efficiency height of graininess dust, and advantage such as block-water performance is good.

In use also there is certain problem in above-mentioned centrifugation formula filter.In spring, two seasons of autumn of some areas, willow catkins flying in the air such as a large amount of poplar flowers, catkin, leaf or foliated foreign material are under the effect of ventilation blower, along with air enters filter, block air duct, draught capacity is descended rapidly, have a strong impact on locomotive, the particularly cooling capacity of EMUs cooling device.And in a single day these foreign material enter centrifugation formula filter core body inside, just are difficult to remove fast.Final result is the operate as normal that influences the train cooling system, strengthens the maintenance and repair workload.Jing-Jin 300km/h EMUs have stood this puzzlement, and utilization department has to take the method for frequent clean, have increased train utilization maintenance cost greatly.

Summary of the invention

The purpose of this utility model is to overcome weak point of the prior art, for railway transportation equipment provides a kind of compact conformation, is easy to safeguard, filter efficiency height, resistance is low, block-water performance is good reliable and practical combined air air filter.

This combined air air filter is made up of coarse filter, fine filter, connector three parts.Along the air-flow direction ecto-entad coarse filter and fine filter are set, connect with connector between two parts.Coarse filter can be a notch wire filter, also can be ripple grid filtration device; Fine filter is a centrifugation formula filter; Connector can be a threaded fastener, also can be quick lock fastener.

The combined air air filter can be connected on the car body side wall with bolt, on the locomotive header, on the skirtboard of car body bottom, also can be installed in the cooling device inlet side.

During the work of combined air air filter, the air that advances from coarse filter one side draught is during through prefilter element, wherein willow catkins flying in the air or foreign material such as foliaceous have been removed, then, air enters fine filter along adapter cavity, under the filtration of centrifugation formula filter, removes the dirty fouls of graininess such as wherein dust, raindrop again, at last, pure air flow in the locomotive car body or cooling device in.

Described combined air air filter, its coarse filter can be a notch wire filter, comprises plain weave or twill stainless steel cloth, generally between 1mm～5mm, mesh size is generally between 5mm～30mm for steel wire diameter.This project organization is simple, can remove willow catkins flying in the air or foliaceous foreign material and polybags such as airborne poplar flower, catkin, leaf to a certain extent.

Described combined air air filter, its coarse filter can be a ripple grid filtration device, it is the installing frame that is surrounded by up and down side plate and left and right sides fixed head, in installing frame, be provided with ripple grid filtration device core body, core body be corrugated ribbon and dividing plate from top to bottom successively alternately, two ends, the corrugated ribbon left and right sides are provided with the end bar, and strip hole on the fixed head is passed in the end of every dividing plate, and with fixed head spot welding or riveted and fixed; The filter cartridge middle part separated by a distancely is provided with a reinforcement, reinforcement and spot welding or riveted and fixed between the side plate up and down.The corrugated ribbon of above-mentioned filter is straight along air-flow direction, and the corrugated ribbon wave height is in 7mm～20mm scope, and the pitch of waves is in 5mm～20mm scope, and corrugated ribbon thickness is in 0.15mm～0.5mm scope.According to the variation of air cleaner length and width size, also can not establish the end bar.

This ripple grid filtration device, the left and right sides fixed head of setting, dividing plate, end bar and reinforcement have increased the intensity of filter, have improved its dependability; Only improve at air drag under the condition of 20～40Pa, improved the filter efficiency of filter, can remove willow catkins flying in the air or foliaceous foreign material and polybags such as airborne poplar flower, catkin, leaf efficiently, avoid handstone to enter fine filter simultaneously and stop up the disposal box dust-exhausting port; And be easy to safeguard, only can recover the coarse filter clean conditions, reduced labour intensity and maintenance cost with the broom cleaning.

Described combined air air filter, fine filter comprises parts such as frame, fuse, disposal box.Fuse is installed in the frame, and the frame lower end is provided with disposal box, and the disposal box bottom is provided with dust-exhausting port.Filter cartridge comprises 3 parts such as front end baffle, one-level settling vessel and two-stage precipitation device.Anterior baffle cross section is a tadpole shape, and one-level settling vessel and two-stage precipitation device cross section lack shape for being circle, just are provided with the diversion division that stretches backward behind the one-level settling vessel.The streamlined air duct of this type filter inside can make passing through of air smoothness, and it is little to make air flow stream cross the energy loss of filter, and windage is low; Air duct is long, and adopts double-filtration, and airborne dust granules can fully be separated with rainwater, the filter efficiency height; Dust, the rainwater collected can directly be discharged outside the car by the dust-exhausting port of disposal box bottom, have significantly reduced the maintenance workload of utilization department.By adjusting the distance between baffle, the settling vessel, can realize the optimum Match between filter filter efficiency and the resistance.

Described combined air air filter adopts stainless steel or aluminum alloy materials, and aluminum alloy material surface carries out anodic oxidation or application is handled.

The utility model compared with prior art has following advantage: adopt notch wire filter or ripple grid filtration device, by threaded fastener or lock fastener and the combination of centrifugation formula fine filter fast, substitute existing rail transport equipment air cleaners such as the brown net of hair, multilayer stainless steel cloth, watt rib formula shutter, centrifugation formula filter, for railway transportation equipment provides two kinds of compact conformations, is easy to safeguard, filter efficiency height, resistance is low, block-water performance is good reliable and practical air cleaner.This combined air air filter can improve the cleannes of locomotive ventilating system air, solves the dirty dirty problem of EMUs cooling device, prolongs the cleaning frequency, reduces maintenance workload, finally reaches the purpose that reduces life cycle cost, increases economic efficiency.

Description of drawings

Fig. 1 is notch wire filter+centrifugation formula filter combined air air filter structural representation.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the vertical view of Fig. 1.

Fig. 4 is ripple grid filtration device+centrifugation formula filter combined air air filter structural representation.

Fig. 5 is the left view of Fig. 4.

Fig. 6 is the vertical view of Fig. 4.

The specific embodiment:

Now the utility model is described in further detail in conjunction with the accompanying drawings: please refer to Fig. 1-3, this combined air air filter comprises parts such as notch wire filter 1, connector 2, centrifugation formula filter 3.Steel wire 4 and filter installing plate 5 are crimped on and form notch wire filter 1 together.Notch wire filter 1 rear end is provided with centrifugation formula filter 3, and centrifugation formula filter comprises parts such as frame 6, fuse, disposal box 10.Fuse is installed in the frame, and the frame lower end is provided with disposal box 10, and disposal box 10 bottoms are provided with dust-exhausting port.Filter cartridge comprises 3 parts such as front end baffle 9, one-level settling vessel 8 and two-stage precipitation device 7.

Please refer to Fig. 4-6, this combined air air filter comprises parts such as ripple grid filtration device 1, connector 2, centrifugation formula filter 3.Ripple grid filtration device is the installing frame 5 that is surrounded by up and down side plate 14 and left and right sides fixed head 11, in installing frame 5, be provided with ripple grid filtration device core body, core body be corrugated ribbon 12 and dividing plate 13 from top to bottom successively alternately, two ends, corrugated ribbon 12 left and right sides are provided with end bar 15, strip hole on the fixed head 11 is passed in the end of every dividing plate 13, and with fixed head 11 spot welding or riveted and fixed; The filter cartridge middle part separated by a distancely is provided with a reinforcement 16, reinforcement 16 and spot welding or riveted and fixed between the side plate 14 up and down.

Ripple grid filtration device rear end is provided with centrifugation formula filter 3, and centrifugation formula filter comprises parts such as frame 6, fuse, disposal box 10.Fuse is installed in to be installed in the frame, and the frame lower end is provided with disposal box 10, and the disposal box bottom is provided with dust-exhausting port.Filter cartridge comprises 3 parts such as front end baffle 9, one-level settling vessel 8 and two-stage precipitation device 7.According to specific design ripple grid filtration device 1 rotatable 90 °.

Claims

1 one kinds of locomotives, EMUs ventilating system or cooling device combined air air filters is characterized in that: along the air-flow direction ecto-entad coarse filter, two parts of fine filter are set, connect with connector between two parts; Described coarse filter can be a notch wire filter, also can be ripple grid filtration device; Described fine filter is a centrifugation formula filter; Connector can be a threaded fastener, also can be quick lock fastener.

2 combined air air filters according to claim 1 is characterized in that: notch wire filter, comprise plain weave or twill stainless steel cloth, and generally between 1mm～5mm, mesh size is generally between 5mm～30mm for steel wire diameter.

3 combined air air filters according to claim 1, it is characterized in that: ripple grid filtration device, it is the installing frame that is surrounded by up and down side plate and left and right sides fixed head, in installing frame, be provided with ripple grid filtration device core body, core body be corrugated ribbon and dividing plate from top to bottom successively alternately, two ends, the corrugated ribbon left and right sides are provided with the end bar, the corrugated ribbon of filter is straight along air-flow direction, the corrugated ribbon wave height is in 7mm～20mm scope, the pitch of waves is in 5mm～20mm scope, and corrugated ribbon thickness is in 0.15mm～0.5mm scope.

4 combined air air filters according to claim 3 is characterized in that: ripple grid filtration device, on the fixed head of the left and right sides, have the strip hole, the strip hole on the fixed head is passed in the end of every dividing plate, and with fixed head spot welding or riveted and fixed.

5 combined air air filters according to claim 3, it is characterized in that: ripple grid filtration device fuse middle part, separated by a distance a cross section is set is circular reinforcement, reinforcement and spot welding or riveted joint or fix with securing member between the side plate up and down.

6 according to the described combined air air filter of claim 1, and it is characterized in that: centrifugation formula filter comprises frame, fuse, disposal box parts; Fuse is installed in the frame, and the frame lower end is provided with disposal box, and the disposal box bottom is provided with dust-exhausting port; Filter cartridge comprises front end baffle, one-level settling vessel and 3 parts of two-stage precipitation device; Anterior baffle cross section is a tadpole shape, and one-level settling vessel and two-stage precipitation device cross section lack shape for being circle, and the one-level settling vessel also is provided with the diversion division that stretches backward.