CN204769808U - Rail welding air purification device in tunnel - Google Patents
Rail welding air purification device in tunnel Download PDFInfo
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- CN204769808U CN204769808U CN201520344628.3U CN201520344628U CN204769808U CN 204769808 U CN204769808 U CN 204769808U CN 201520344628 U CN201520344628 U CN 201520344628U CN 204769808 U CN204769808 U CN 204769808U
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- rail welding
- cleaning unit
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Abstract
The utility model discloses a rail welding air purification device in tunnel, including dust waste gas collector (1) and exhaust -gas treatment case (2), characterized by: dust waste gas collector (1) and abandonment are handled and have still been connected gradually dust arrester (4) and fan (5) through dust pick -up hose (3) between case (2), dust arrester (4) top is equipped with the interface that admits air (6) respectively and gives vent to anger interface (7), is connected with dust abandonment collector (1) and fan (5) respectively, and the lower extreme is equipped with dust blow -down valve (8), be equipped with double -deck mesh baffle (9) that the slope prevented in exhaust -gas treatment case (2). The utility model discloses can carry out air purification to a large amount of waste gas, the dust that the welding of rail in airtight environment such as tunnel produced, optimize the construction environment, realize nuisanceless emission, constructor is healthy in the protection.
Description
Technical field
The utility model relates to environment protection equipment field, particularly relates to rail welding air cleaning unit in a kind of tunnel.
Background technology
Gapless track substantially increases the stationarity of train operation, is extensively promoted in the construction of track passenger transport line, and rail welding is the necessary operation that gapless track is built.
Railway transportation battalion of existing state seamless railroad steel rail laying flow process is, 100 meters of scale rail transportings steel mill produced are to Han Gui factory, be welded into 500 meters of gapless line, be transported to on-the-spot directly laying 500 meters of gapless line of laying a railway track again, adopt on-the-spot contact flash welder soldered between 500 meters of gapless line, carried out gapless track and laid.Because 500 meters of Long rail welding cooperating amounts are large, it is few to weld quantity every day, and air diffusion conditions is good, and construction environment can reach related standards, can not do specially treated.
But for the newly built railway location be not communicated with large iron, because not possessing the condition of the gapless line of transport 100 meters and 500 meters, said method cannot be applied mechanically, 100 meters of scale rails by steel mill produces are only had to be cut into 25 meters of rail and to transport to building site, gapless track is welded into again in building site, welding job amount becomes 20 times of increases, and pollutant row concentration rises 20 times.Particularly in subway tunnel; pollutant not easily spreads; in addition weld civil engineering when rail is constructed in tunnel to complete, in tunnel under construction, ventilation unit is removed, and operation phase ventilation unit is not brought into use; irremediable actual bodily harm can be brought to workmen; be badly in need of a kind of equipment of design, purification of air is carried out to 25 meters of rail welding production pollutions in tunnel, protection construction environment; realize nuisanceless discharge, protection workmen's is healthy.
Utility model content
Technical problem to be solved in the utility model is: operate for avoiding rail welding pollutant effect workmen; rail welding air cleaning unit in a kind of tunnel is provided; by carrying out purification of air to production pollution, protection construction environment, realizes nuisanceless discharge.
The utility model for solving the problems of the technologies described above adopted technical scheme is:
Rail welding air cleaning unit in a kind of tunnel, comprises dust exhaust gas collector and waste gas treatment tank, is also connected with dust arrester and blower fan in turn between described dust exhaust gas collector and waste treatment case by hose; Described dust arrester top is respectively equipped with intake interface and gives vent to anger interface, discards collector respectively and blower fan is connected with dust, and lower end is provided with dust emission valve; The double-deck mesh dividing plate tilting to prevent is provided with in described waste gas treatment tank.
Described dust exhaust gas collector is made up of two independent dust absorption arms, and described dust absorption arm front end is flaring suction port, and end is linked on the intake interface of described dust arrester jointly.
Described dust arrester is welded by the cylindrical shell on top and the cone of bottom, and described cone lower pointed end is located at by described dust emission valve.
Be loaded with liquid for treating waste gas in described waste gas treatment tank, described hose interface is located at side below waste gas treatment tank, and described waste treatment box top is provided with circular exhaust outlet.
Described mesh dividing plate is located in the middle part of waste gas treatment tank, and two-layer mesh dividing plate is parallel to each other, and tilts fixing.
Described liquid for treating waste gas selects Ca (OH) 2 solution, and treatment fluid liquid level higher than described mesh dividing plate, and carries out galvanic cell cathodic protection process to exhaust-gas treatment box body sacrificial anode protection.
The axial flow blower that described blower fan selects upper and lower two ends to take over.
The technique effect that the utility model adopts technique scheme to have is:
The large quantity of exhaust gas that the utility model can produce rail welding in the closed environments such as tunnel, dust carry out purification of air, Optimizing construction environment, realize nuisanceless discharge, and workmen is healthy in protection.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail
Fig. 1 is the utility model overall structure schematic diagram
Fig. 2 is waste treatment case 2 top view
Fig. 3 is mesh diaphragm structure figure
Wherein, 1-dust exhaust gas collector, 2-waste gas treatment tank, 3-hose, 4-dust arrester, 5-blower fan, 6-intake interface, 7-gives vent to anger interface, 8-dust emission valve, 9-mesh dividing plate, 10-exhaust outlet
Detailed description of the invention
Rail welding air cleaning unit in a kind of tunnel as shown in Figure 1, comprises dust exhaust gas collector 1 and waste gas treatment tank 2, is also connected with dust arrester 4 and blower fan 5 in turn between dust exhaust gas collector 1 and waste treatment case 2 by hose 3; Dust arrester 4 top is respectively equipped with intake interface 6 and interface 7 of giving vent to anger, and discards collector 1 respectively and blower fan 5 is connected with dust, and lower end is provided with dust emission valve 8; The double-deck mesh dividing plate 9 tilting to prevent is provided with in waste gas treatment tank 2.By carrying out purification of air to production pollution, protection construction environment, realizes nuisanceless discharge.
Dust exhaust gas collector 1 is made up of two independent dust absorption arms, and described dust absorption arm front end is flaring suction port 9, and end is linked on the intake interface 6 of described dust arrester 4 jointly.
Dust arrester 4 is welded by the cylindrical shell on top and the cone of bottom, and described cone lower pointed end is located at by described dust emission valve 8.
Be loaded with liquid for treating waste gas in waste gas treatment tank 2, described hose 3 interface is located at side below waste gas treatment tank 2, and described waste treatment case 2 top is provided with circular exhaust outlet 10, as shown in Figure 2.
As shown in Figure 3, mesh dividing plate 9 is located in the middle part of waste gas treatment tank 2, and two-layer mesh dividing plate 9 is parallel to each other, and tilts fixing.Dividing plate is the bubble produced in treatment fluid to reduce waste gas, increases the contact area of solution and gas, fast reaction speed, and the waste gas processed is discharged in air by the opening above treatment box through reaching discharge standard.
Liquid for treating waste gas selects Ca (OH) 2 solution, and treatment fluid liquid level higher than described mesh dividing plate 9, and carries out galvanic cell cathodic protection process to waste gas treatment tank 2 casing sacrificial anode protection.
The know-why of waste treatment liquid of the present utility model is: building-site contact flash welding is the power supply utilizing engine to send, by a weldering rail device, alternating current is led on two rail to be welded, an one steel rail is made to be negative electrode, one one steel rail is anode, two-stage pulse short circuit is made to produce great electric current, because two one steel rail joint contact resistances are very big, the electric energy that engine sends is converted into heat energy at rail joint place, by rail joint melt, then apply pressure two one steel rails are welded on one.The reactant participating in reacting in whole welding process only has steel, air and heat energy, due to rail be hot rolling out, the process of melting rail almost produces without pernicious gas, the heat expansion inhomogeneities that the concentrated release due to heat energy contacts with pulse, can produce Fe and Fe2O3 dust and splash.N2 gas under high temperature action in air and O2 gas easily react and produce NO2 toxic gas, the health of harm people.The utility model provides a kind of equipment, by dust separation, by pernicious gas with in Ca (HO) 2 solution and generate CaNO3 and H2O harmless emission.
The axial flow blower that blower fan 5 selects upper and lower two ends to take over.
Workflow of the present utility model is: the dust waste gas that in welding process, soldering tip produces, the intake interface 6 being delivered to two dust arresters 4 by hose 3 is collected by two dust exhaust gas collectors 1, collect after dust by interface 7 of giving vent to anger in dust arrester 4, delivered to the air inlet of waste gas treatment tank 2 again by two axial flow blowers 5 by hose 3, whole system provides power by axial flow blower 5, the treatment fluid that waste gas enters in treatment box and casing merges, and wherein the reaction equation of toxic gas and treatment fluid is: NO2+Ca (HO) 2=CaNO3+H2O.
Claims (7)
1. rail welding air cleaning unit in a tunnel, comprise dust exhaust gas collector (1) and waste gas treatment tank (2), it is characterized in that: between described dust exhaust gas collector (1) and waste treatment case (2), be also connected with dust arrester (4) and blower fan (5) in turn by hose (3); Described dust arrester (4) top is respectively equipped with intake interface (6) and interface of giving vent to anger (7), discard collector (1) with dust respectively and blower fan (5) is connected, lower end is provided with dust emission valve (8); The double-deck mesh dividing plate (9) of tilting to prevent is provided with in described waste gas treatment tank (2).
2. rail welding air cleaning unit in tunnel according to claim 1, it is characterized in that: described dust exhaust gas collector (1) is made up of two independent dust absorption arms, described dust absorption arm front end is flaring suction port (9), and end is linked on the intake interface (6) of described dust arrester (4) jointly.
3. rail welding air cleaning unit in tunnel according to claim 1 and 2, it is characterized in that: described dust arrester (4) is welded by the cylindrical shell on top and the cone of bottom, described dust emission valve (8) is located at described cone lower pointed end.
4. rail welding air cleaning unit in tunnel according to claim 1, it is characterized in that: described waste gas treatment tank is loaded with liquid for treating waste gas in (2), described hose (3) interface is located at side, waste gas treatment tank (2) below, and described waste treatment case (2) top is provided with circular exhaust outlet (10).
5. rail welding air cleaning unit in tunnel according to claim 1, is characterized in that: described mesh dividing plate (9) is located at waste gas treatment tank (2) middle part, and two-layer mesh dividing plate (9) is parallel to each other, and tilts fixing.
6. rail welding air cleaning unit in tunnel according to claim 4; it is characterized in that: described liquid for treating waste gas selects Ca (OH) 2 solution; treatment fluid liquid level higher than described mesh dividing plate (9), and carries out galvanic cell cathodic protection process to waste gas treatment tank (2) casing sacrificial anode protection.
7. rail welding air cleaning unit in tunnel according to claim 1, is characterized in that: the axial flow blower that described blower fan (5) selects upper and lower two ends to take over.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344628.3U CN204769808U (en) | 2015-05-26 | 2015-05-26 | Rail welding air purification device in tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344628.3U CN204769808U (en) | 2015-05-26 | 2015-05-26 | Rail welding air purification device in tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN204769808U true CN204769808U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520344628.3U Active CN204769808U (en) | 2015-05-26 | 2015-05-26 | Rail welding air purification device in tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109316924A (en) * | 2017-12-14 | 2019-02-12 | 深圳市科延机电有限公司 | A kind of smoke multistage purification device, purification method and smokeless reflow machine |
-
2015
- 2015-05-26 CN CN201520344628.3U patent/CN204769808U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109316924A (en) * | 2017-12-14 | 2019-02-12 | 深圳市科延机电有限公司 | A kind of smoke multistage purification device, purification method and smokeless reflow machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |