CN112473341A - Electroplating waste gas comprehensive treatment system and treatment method - Google Patents
Electroplating waste gas comprehensive treatment system and treatment method Download PDFInfo
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
The application relates to an electroplating waste gas comprehensive treatment system and a treatment method, which comprises a tower body, wherein the tower body is provided with a second purification layer, a transition layer, a first purification layer and a storage layer from top to bottom, the tower body is provided with an air outlet pipe, the tower body is provided with an air inlet pipe, the first purification layer is provided with a plurality of spray pipes, a water pump is arranged in the storage layer and is provided with a water pipe communicated with the spray pipes, the first purification layer is provided with a mounting seat, the mounting seat is provided with a containing tank, the bottom tank wall of the containing tank is provided with a water outlet, the mounting seat is provided with a floating block, the floating block slides in the containing tank up and down, the tower body is provided with a guide assembly, the bottom layer wall of the transition layer is provided with an air outlet, the bottom layer wall of the transition layer is provided with, the bottom layer wall of the second purification layer is provided with air holes. The present application has the effect of increasing the exhaust reaction time.
Description
Technical Field
The application relates to the technical field of waste gas treatment equipment, in particular to an electroplating waste gas comprehensive treatment system and a treatment method.
Background
The electroplating industry is an important processing industry in China, and the electroplating processing is generally to place a plated object in an electrolytic bath loaded with corresponding chemical electrolyte and form an electroplated layer on the surface of the plated object through electrification. However, electroplating exhaust gas containing heavy metals is generated in the electroplating process, and if the electroplating exhaust gas is directly discharged without any treatment, the electroplating exhaust gas can cause serious pollution to the environment.
At present, Chinese utility model patent with publication number CN208115486U discloses an electroplating waste gas treatment device, which comprises a purification tower. The purification tower is provided with the intake pipe below, and the purification tower top is equipped with the gas outlet, is provided with first level processing layer in the purification tower, and first level processing layer includes first baffle and first shower, is provided with second level processing layer in the purification tower, and second level processing layer includes second baffle and second shower. The purifying tower is internally provided with a third-stage treatment layer on the second-stage treatment layer, the first baffle is provided with a first vent hole, the second baffle is provided with a second vent hole, the bottom of the purifying tower is provided with a first liquid outlet, and the side wall of the purifying tower is provided with a second liquid outlet between the first baffle and the second baffle.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the retention time of the waste gas after entering the purification tower is short, so that the heavily polluted waste gas can not fully react with the sprayed solution after entering, and the content of harmful substances in the treated gas is still higher.
Disclosure of Invention
In order to increase the reaction time of the waste gas, the application provides an electroplating waste gas comprehensive treatment system and a treatment method.
The application provides a comprehensive treatment system and a comprehensive treatment method for electroplating waste gas.
In a first aspect, the application provides an electroplating waste gas comprehensive treatment system, which adopts the following technical scheme:
an electroplating waste gas comprehensive treatment system comprises a tower body, wherein the tower body is provided with a second purification layer, a transition layer, a first purification layer and a storage layer for storing solution of neutralizing waste gas from top to bottom, the top part of the tower body is provided with an outlet pipe communicated to the second purification layer, the tower body is provided with an inlet pipe, the inlet pipe is communicated to the first purification layer and is close to the wall part of the bottom layer, the inner wall of the periphery of the first purification layer is provided with a plurality of spray pipes, a water suction pump is arranged in the storage layer and is provided with a water conveying pipe communicated with the spray pipes, the wall of the bottom layer of the first purification layer is provided with a mounting seat, the middle part of the mounting seat is provided with a holding tank, the wall of the bottom of the holding tank is provided with a water outlet communicated to the storage layer, the mounting seat is provided with a floating block matched, the degree of depth that highly is greater than the holding tank of floating the piece, the tower body is provided with the direction subassembly that is used for the restriction to float a piece motion trail, the gas vent has been seted up to transition layer bottom layer wall, transition layer bottom layer wall is provided with the shrouding, the shrouding slides from top to bottom in the gas vent, it is provided with the ejector pin to float piece top intermediate position, the ejector pin top is fixed in shrouding bottom intermediate position, the second purifies the layer and fills there is the filter material, the even interval of second purification layer bottom layer wall has seted up the bleeder vent that a plurality of apertures are less than the filter material diameter.
Through adopting above-mentioned technical scheme, the during operation is electroplated waste gas and is let in first purification layer from the intake pipe, starts the suction pump simultaneously, carries the solution of storage in the deposit layer to the spray tube to carry out the neutralization to waste gas through the spray tube blowout. Because the first purification layer and the transition layer are sealed by the seal plate, electroplating waste gas in the first purification layer can not be separated temporarily, so that the time for reaction neutralization is increased. Later solution liquid level rises and drives the floating block come-up, and the cooperation lasts the electroplating waste gas who lets in and increases the atmospheric pressure on first purification layer, promotes the shrouding upward movement, when the shrouding slided away from the gas vent, and the electroplating waste gas through reacting for a long time and letting in the transition layer from the gas vent, the floating block breaks away from the holding tank simultaneously for the solution of gathering up in the first purification layer can get into the reserve layer through the outlet, realizes the cyclic utilization of solution. When the solution liquid level and the atmospheric pressure intensity on first purification layer drop to certain extent, the floating block slips into the holding tank and seals the outlet, and the shrouding slips into the gas vent, seals the gas vent for the electroplating waste gas that lets in later can have longer neutralization reaction time, and the solution liquid level rises the back, and the electroplating waste gas that lets in can be through the solution neutralization of gathering up earlier, and the solution neutralization that is sprayed out again is favorable to promoting electroplating waste gas's neutralization effect. Then the electroplating waste gas entering the transition layer is discharged from the gas outlet pipe after neutralization reaction by the filter material of the second purification layer.
Optionally, the guide assembly includes guide rods symmetrically arranged, the installation seat is located between the two guide rods, guide strips are arranged on the sides of the floating blocks close to the top, and the guide strips slide up and down on the guide rods.
Through adopting above-mentioned technical scheme, the gib block slides from top to bottom on the guide bar during the use, leads to the floating block, is favorable to restricting the motion trail of floating block.
Optionally, the top of the sealing plate is provided with a connecting strip with an annular structure near the edge, the bottom of the connecting strip is provided with a filter screen, and one side of the filter screen, which is far away from the connecting strip, is connected to the bottom layer wall of the transition layer.
Through adopting above-mentioned technical scheme, when the shrouding upward movement breaks away from the gas vent, the connecting strip drives the filter screen and rises for electroplating waste gas passes through the filter screen earlier before getting into the transition layer, is favorable to reducing the quantity of solution liquid drop in the electroplating waste gas.
Optionally, the wall of the bottom layer of the transition layer is inclined near the air outlet to form a flow guide surface, and the distance from the top of the flow guide surface to the first purification layer is smaller than the distance from the top of the flow guide surface to the first purification layer.
Through adopting above-mentioned technical scheme, when the piece that floats slideed into the gas vent, the filter screen was piled up on transition layer bottom layer wall, and the connecting strip extrudees the filter screen under the action of gravity this moment, extrudees filterable solution, and partial solution can flow towards first purification layer along the water conservancy diversion this moment, is favorable to retrieving solution.
Optionally, the tower body is provided with the axis of rotation, axis of rotation both sides swivelling joint respectively purify the lateral wall of the relative both sides in layer in the second, the axis of rotation is provided with the stirring piece that is used for stirring the filter material, the shrouding is provided with and is used for driving the rotatory drive assembly of axis of rotation when the shrouding slides from top to bottom.
Through adopting above-mentioned technical scheme, when the shrouding upward movement, drive assembly drive axis of rotation is rotatory, drives stirring piece and stirs the filter material, is favorable to reducing the possibility that the caking appears in lower floor's filter material.
Optionally, the driving assembly includes a driving rack and a transmission gear, the transmission gear is fixed to the outer peripheral side of the rotating shaft, the bottom of the driving rack is fixed to the middle position of the top of the sealing plate and extends into the second purifying layer, and the driving rack is meshed with the transmission gear.
Through adopting above-mentioned technical scheme, drive rack and follow the shrouding upward movement during the use, drive the transmission gear rotation for the axis of rotation gets into rotation state.
Optionally, a stop block is arranged on the bottom layer wall of the second purification layer, the height of the stop block is higher than the filling height of the filter material, a blocking groove is formed in the middle of the stop block, the rotating shaft penetrates through the blocking groove, the transmission gear is located in the blocking groove, and the driving rack slides up and down in the blocking groove.
By adopting the technical scheme, the transmission gear is positioned in the baffle groove, so that the filter material is favorably prevented from contacting the transmission gear, and the possibility that the filter material blocks the transmission gear to rotate is reduced.
Optionally, the stirring piece is a stirring strip, the stirring strip has a plurality of and even two and sets up in axis of rotation periphery side, the stirring strip is arc strip structure.
Through adopting above-mentioned technical scheme, the stirring strip is arc strip structure, can stir more lower floor's filter material to the upper strata.
Optionally, the spray pipe is provided with an atomizing nozzle.
Through adopting above-mentioned technical scheme, atomize solution through atomizer during the use, be favorable to promoting the area of contact of solution and electroplating waste gas, promote the effect of neutralization reaction.
In a second aspect, the application provides a comprehensive treatment method for electroplating waste gas, which adopts the following technical scheme:
firstly, introducing electroplating waste gas into a first purification layer from an air inlet pipe, starting a water suction pump to extract solution in a storage layer, spraying the solution in the first purification layer through a spray pipe, and neutralizing the introduced waste gas; then the floating block is driven to float by the solution with the liquid level rising, and simultaneously the sealing plate moves upwards by matching with the continuously introduced waste gas until the sealing plate is separated from the exhaust port, the waste gas neutralized for a long time enters the transition layer, and the floating block is separated from the holding tank, so that the solution enters the holding tank and then is discharged into the storage layer through the water outlet; when the liquid level of the solution in the first purification layer is reduced and the quantity of waste gas is reduced, the floating block slides into the accommodating groove to close the water outlet, and meanwhile, the sealing plate slides into the air outlet to block the air outlet; and finally, the neutralized waste gas entering the transition layer is further neutralized and filtered by the filter material and then is discharged from the gas outlet pipe.
Through adopting above-mentioned technical scheme, during the processing, electroplating waste gas gets into first purification layer after and does not let in the transition layer for the reaction time of electroplating waste gas and solution increases, is favorable to promoting electroplating waste gas's neutralization effect.
In summary, the present application includes at least one of the following benefits:
1. when the device is used, electroplating waste gas is introduced into the first purification layer, and then the electroplating waste gas is neutralized by the solution sprayed out of the spray pipe. When the air pressure and the page are raised to a certain degree, the sealing plate moves upwards until the sealing plate is separated from the exhaust port, then the neutralized electroplating waste gas enters the transition layer, and the reaction time of the solution and the electroplating waste gas is prolonged by prolonging the retention time of the electroplating waste gas in the first purification layer, so that the reaction effect of the electroplating waste gas is favorably improved;
2. when the stirring device is used, the rotating shaft rotates to drive the stirring strips to stir the filter material, so that the possibility of caking of the filter material is reduced.
Drawings
FIG. 1 is a schematic diagram of the external structure of an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of an electroplating effluent gas introduced into a transition layer according to an embodiment of the present disclosure;
FIG. 3 is an enlarged schematic view of section A of FIG. 2;
FIG. 4 is a schematic cross-sectional view of an electroplating effluent gas of an embodiment of the present application before it is introduced into a transition layer;
FIG. 5 is a schematic view of a partial structure of a stirring bar structure and a driving assembly according to an embodiment of the present application.
Reference numerals: 1. a tower body; 2. a second purification layer; 3. a transition layer; 4. a first purification layer; 5. a reserve layer; 6. an air outlet pipe; 7. an air inlet pipe; 8. a nozzle; 801. an atomizing spray head; 9. a water pump; 10. a water delivery pipe; 11. a mounting seat; 12. accommodating grooves; 13. a water outlet; 14. a floating block; 15. a guide assembly; 151. a guide bar; 16. an exhaust port; 17. closing the plate; 171. a connecting strip; 18. a top rod; 19. filtering the material; 20. air holes are formed; 21. a guide strip; 22. a filter screen; 23. a flow guide surface; 24. a rotating shaft; 25. a drive assembly; 251. a drive rack; 252. a transmission gear; 26. a stopper; 27. a baffle groove; 28. and (4) stirring the strips.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
Referring to fig. 1 and 2, the electroplating waste gas comprehensive treatment system includes a tower body 1. The tower body 1 is internally provided with a second purification layer 2, a transition layer 3, a first purification layer 4 and a storage layer 5 from top to bottom, the storage layer 5 stores a solution for neutralizing electroplating waste gas during use, the stored solution neutralizes the electroplating waste gas in the first purification layer 4, and then the second purification layer 2 is introduced for neutralization again after passing through the transition layer 3.
Referring to fig. 1 and 2, the tower body 1 is fixedly connected with an air inlet pipe 7, the air inlet pipe 7 is communicated with the portion, close to the bottom layer wall, of the first purification layer 4, and electroplating waste gas is introduced into the first purification layer 4 through the air inlet pipe 7.
Referring to fig. 3 and 4, a plurality of spray pipes 8 are uniformly arranged on the inner wall of the first purification layer 4 at intervals, and the spray pipes 8 are communicated with each other and fixedly connected with an atomizing nozzle 801. A water suction pump 9 is fixedly arranged in the storage layer 5, the water suction pump 9 is communicated with a water delivery pipe 10, and the spray pipe 8 is communicated with the water suction pump 9 through the water delivery pipe 10. When the water pump 9 is started, the solution stored in the storage layer 5 is pumped, then is transmitted to the spray pipe 8 through the water pipe 10, and finally is sprayed out after being atomized by the atomizing nozzle 801. The electroplating waste gas that lets in first purification layer 4 contacts with the solution after the atomizing, carries out neutralization reaction, can make the reaction more abundant, is favorable to promoting the effect of neutralization.
Referring to fig. 3, an exhaust port 16 is disposed at the middle position of the bottom wall of the transition layer 3 for allowing the neutralized electroplating waste gas in the first purification layer 4 to enter the transition layer 3. The bottom layer wall of transition layer 3 is provided with shrouding 17, and shrouding 17 slides from top to bottom in gas vent 16 for seal gas vent 16, make the neutralization reaction time extension of electroplating waste gas and solution, enter transition layer 3 after shrouding 17 breaks away from gas vent 16.
Referring to fig. 2 and 3, a mounting seat 11 is fixedly connected to the bottom middle position of the bottom layer wall of the first purification layer 4, and a containing groove 12 extending along the vertical direction is formed in the middle of the mounting seat 11. The bottom wall of the accommodating tank 12 is provided with a water outlet 13, and the water outlet 13 is communicated with the reserve layer 5. The solution sprayed out after being atomized by the atomizing nozzle 801 finally collects on the bottom layer wall of the first purification layer 4, when the liquid level of the collected solution rises until the solution overflows the mounting seat 11, the overflowed part can enter the storage layer 5 through the water outlet 13, so that the solution is recycled, and the rising solution simultaneously overflows the air inlet pipe 7, so that the introduced electroplating waste gas is firstly subjected to neutralization reaction in the solution and then is diffused in the first purification layer 4 to react with the atomized solution.
Referring to fig. 2, the mounting block 11 is provided with a hollow floating block 14 for blocking the drain opening 13 and pushing the closing plate 17 upward. The height of the floating block 14 is greater than the depth of the accommodating tank 12, the size of the floating block is matched with the accommodating tank 12, and when the liquid level of the solution is over the mounting seat 11, the floating block 14 floats upwards under the action of buoyancy along with the continuous rising of the liquid level. The top intermediate position fixedly connected with ejector pin 18 of floating block 14, the ejector pin 18 top is fixed in shrouding 17 bottom intermediate position, and the floating block 14 that upwards floats passes through ejector pin 18 jack-up shrouding 17 for shrouding 17 upwards slides in gas vent 16. Meanwhile, because the clearance between the peripheral side opening walls of the sealing plate 17 and the exhaust opening 16 is small, electroplating waste gas is difficult to leak, so that along with the continuous introduction of the electroplating waste gas into the air inlet pipe 7, the air pressure in the first purification layer 4 rises, and the sealing plate 17 is pushed to move upwards together by matching with the ejector rod 18 until the sealing plate 17 is separated from the exhaust opening 16. At this time, the electroplating waste gas in the first purification layer 4 is discharged into the transition layer 3 through the exhaust port 16, which is beneficial to improving the time of the neutralization reaction of the electroplating waste gas, and meanwhile, the floating block 14 is separated from the holding tank 12, so that the solution is discharged into the reserve layer 5. When the liquid level and the air pressure drop to a certain degree, the sealing plate 17 slides downwards into the exhaust port 16 to close the exhaust port 16 again, and the floating block 14 slides into the accommodating groove 12 to close the water outlet 13.
Referring to fig. 3, the sealing plate 17 is provided with a connecting bar 171, and the connecting bar 171 is of an annular structure and is fixedly connected to a portion of the top peripheral side of the sealing plate 17 near the edge. The bottom of the connecting bar 171 is provided with the filter screen 22, the filter screen 22 is in an annular structure and is fixed at the bottom of the connecting bar 171 along the extending track of the connecting bar 171, and one end of the filter screen 22, which is far away from the connecting bar 171, is fixed at the top of the bottom layer wall of the transition layer 3. The filter screen 22 can adopt the non-woven fabrics, when shrouding 17 upwards breaks away from gas vent 16, filter screen 22 rises under the drive of shrouding 17 and encloses the clearance between connecting strip 171 and the 3 bottom layer walls of transition layer, and the electroplating waste gas after the neutralization filters through filter screen 22 and reentrants transition layer 3, can reduce the quantity of the gaseous state solution that contains in the electroplating waste gas that gets into transition layer 3.
Referring to fig. 3, the bottom wall of the transition layer 3 is obliquely provided with a flow guiding surface 23, the flow guiding surface 23 is located between the filter screen 22 and the air outlet 16 and surrounds the air outlet 16, and the distance from the bottom of the flow guiding surface 23 to the first purification layer 4 is less than the distance from the top of the flow guiding surface 23 to the first purification layer 4. When the cover plate 17 is slid down, the filter screen 22 is stacked down on top of the bottom wall of the transition layer 3 along with the connecting bars 171; when shrouding 17 slides in the gas vent 16, connecting strip 171 gland is on filter screen 22, filterable gaseous state solution receives the extrusion liquid to form the solution droplet and breaks away from filter screen 22 in filter screen 22 this moment, then by the water conservancy diversion face 23 to gas vent 16 water conservancy diversion, permeate to first purification layer 4 through the clearance between shrouding 17 and the gas vent 16, be favorable to retrieving solution and make filter screen 22's filter capacity keep to a certain extent, there is the solution droplet in the clearance between shrouding 17 and the gas vent 16 simultaneously, can reduce the quantity of carrying out the electroplating waste gas of infiltration from the clearance.
Referring to fig. 2, the tower body 1 is provided with a guide assembly 15 for limiting the movement track of the floating block 14 and facilitating the sliding of the floating block 14 into the receiving groove 12. The guiding assembly 15 comprises guiding rods 151, the guiding rods 151 are symmetrically fixed in the first purifying layer 4, and the mounting seat 11 is located between the two guiding rods 151. The two opposite sides of the floating block 14 are fixedly connected with guide strips 21 respectively, guide holes are formed in the guide strips 21 respectively, and the guide rods 151 penetrate through the guide holes. When the floating block 14 moves up and down, the guide strip 21 slides up and down on the guide rod 151 through the guide hole, so that the floating block 14 is guided, and the sealing plate 17 and the floating block 14 are fixedly connected through the ejector rod 18, so that the movement track of the sealing plate 17 is limited at the same time.
Referring to fig. 1 and 2, the second purifying layer 2 is filled with a filter material 19, and the bottom layer wall of the second purifying layer 2 is uniformly provided with air holes 20 at intervals, and the diameter of each air hole 20 is smaller than the diameter of the filter material 19. The electroplating waste gas entering the transition layer 3 is transmitted to the second purification layer 2 through the air holes 20 and is further reacted and neutralized with the filter material 19. The tower body 1 is fixed with the outlet duct 6, the outlet duct 6 is located the second and purifies layer 2 top portion and is linked together with the second and purifies layer 2, and the electroplating waste gas after the neutralization is discharged from the outlet duct 6.
Referring to fig. 1 and 2, the tower body 1 is provided with a rotation shaft 24, both ends of the rotation shaft 24 are rotatably coupled to opposite side walls of the second purification layer 2 through bearings, respectively, and the rotation shaft 24 is covered with the filter material 19. A plurality of stirring pieces are uniformly fixed on the outer peripheral side of the rotating shaft 24 at intervals, and when the rotating shaft 24 rotates, the stirring pieces stir the filter material 19, so that the possibility of agglomeration after the reaction of the filter material 19 and electroplating waste gas can be reduced.
Referring to fig. 4 and 5, the sealing plate 17 is provided with a driving assembly 25, and when the sealing plate 17 moves up and down, the driving assembly 25 drives the rotating shaft 24 to rotate. The driving assembly 25 comprises a driving rack 251 and a transmission gear 252, a stopper 26 is fixedly connected to the middle of the second purifying layer 2, and the height of the stopper 26 is higher than the height of the stack of the filled filter materials 19. The middle part of the baffle 26 is provided with a baffle groove 27 along the vertical direction, and the baffle groove 27 does not upwards penetrate through the baffle 26 to the outside, so that the filter material 19 can be prevented from entering the baffle groove 27. The rotary shaft 24 passes through the blocking groove 27 and is rotatably connected to the stopper 26 by a rotary seal, and the transmission gear 252 is fixed on the rotary shaft 24 and is positioned in the blocking groove 27. The bottom of the driving rack 251 is fixed at the middle position of the top of the sealing plate 17, the sliding groove for communicating the blocking groove 27 with the transition layer 3 is formed in the bottom layer wall of the second purification layer 2, and the driving rack 251 extends into the blocking groove 27 through the sliding groove and can slide in the sliding groove up and down. The driving rack 251 is meshed with the transmission gear 252, when the closing plate 17 moves upwards, the driving rack 251 drives the rotating shaft 24 to rotate, so that the stirring piece stirs the filter material 19, meanwhile, the filter material 19 cannot enter the blocking groove 27, and the possibility that the driving rack 251 is blocked by the filter material 19 when being meshed with the transmission gear 252 is reduced.
Referring to fig. 4, the stirring member is a stirring bar 28, the stirring bar 28 is an arc-shaped strip structure, one end of the stirring bar 28 is fixedly connected to the rotating shaft 24, and when the closing plate 17 moves upwards, the orientation of the arc-shaped concave surface of the stirring bar 28 is the same as the rotating direction of the rotating shaft 24, so that more bottom filter materials 19 can be stirred to be close to the top part of the filter materials 19.
The implementation principle of the electroplating waste gas comprehensive treatment system in the embodiment of the application is as follows:
when electroplating waste gas handles, let in first purification layer 4 through intake pipe 7 with electroplating waste gas, start the solution of suction pump 9 in with reserve layer 5 simultaneously and transmit to spray tube 8 to spout through atomizer 801, make electroplating waste gas and the neutralization reaction of solution more abundant. And the exhaust port 16 is closed by the sealing plate 17, so that the electroplating waste gas in the first purification layer 4 can not be introduced into the transition layer 3 temporarily, and the neutralization reaction time of the electroplating waste gas can be increased. When the solution level collected in the first purification layer 4 and the amount of the continuously introduced electroplating waste gas reach a certain degree, the sealing plate 17 slides out of the exhaust port 16 upwards under the push of the floating block 14 and the air pressure, so that the neutralized electroplating waste gas enters the transition layer 3 and then enters the second purification layer 2 to be neutralized by the filter material 19 and then is discharged. Meanwhile, the liquid level of the solution in the first purification layer 4 is discharged into the storage layer 5 and then drops, and the air pressure drops after the electroplating waste gas is introduced into the transition layer 3, so that the sealing plate 17 slides into the exhaust port 16 to block the exhaust port 16 again. The whole process is simple, and the exhaust port 16 is temporarily blocked, so that the neutralization reaction time of the electroplating waste gas and the solution is prolonged, and the treatment effect of the electroplating waste gas is favorably improved.
The application also discloses a comprehensive treatment method of electroplating waste gas, which comprises the following steps:
firstly, introducing electroplating waste gas into the first purification layer 4 from the air inlet pipe 7, starting the water suction pump 9 to extract the solution in the storage layer 5, spraying the solution in the first purification layer 4 through the spray pipe 8, and neutralizing the introduced waste gas; then the floating block 14 is driven by the solution with the raised liquid level to float upwards, and simultaneously the sealing plate 17 moves upwards by matching with the continuously introduced waste gas until the sealing plate 17 is separated from the exhaust port 16, the waste gas neutralized for a long time enters the transition layer 3, and the floating block 14 is separated from the holding tank 12, so that the solution enters the holding tank 12 and then is discharged into the storage layer 5 through the water outlet 13; when the liquid level of the solution in the first purification layer 4 is lowered and the amount of the waste gas is reduced, the floating block 14 slides into the accommodating groove 12 to close the water outlet 13, and meanwhile, the sealing plate 17 slides into the air outlet 16 to block the air outlet 16; and finally, the neutralized waste gas entering the transition layer 3 is further neutralized and filtered by the filter material 19 and then is discharged from the gas outlet pipe 6.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides an electroplating waste gas integrated processing system, includes tower body (1), its characterized in that: the tower body (1) is provided with a second purification layer (2), a transition layer (3), a first purification layer (4) and a storage layer (5) for storing the solution of the neutralization waste gas from top to bottom, the top part of the tower body (1) is provided with an air outlet pipe (6) communicated to the second purification layer (2), the tower body (1) is provided with an air inlet pipe (7), the air inlet pipe (7) is communicated to the first purification layer (4) near the bottom layer wall part, the inner wall of the peripheral side of the first purification layer (4) is provided with a plurality of spray pipes (8), a water suction pump (9) is installed in the storage layer (5), the water suction pump (9) is provided with a water conveying pipe (10) communicated with the spray pipes (8), the bottom layer wall of the first purification layer (4) is provided with a mounting seat (11), a holding groove (12) is formed in the middle of the mounting seat (11), a water outlet (13) communicated to the storage layer (5) is, the mounting seat (11) is provided with a floating block (14) which is matched with the accommodating groove (12) in size, the floating block (14) slides up and down in the accommodating groove (12), the height of the floating block (14) is larger than the depth of the accommodating groove (12), the tower body (1) is provided with a guide component (15) used for limiting the motion trail of the floating block (14), an exhaust port (16) is arranged on the bottom wall of the transition layer (3), a sealing plate (17) is arranged on the bottom wall of the transition layer (3), the sealing plate (17) slides up and down in the exhaust port (16), a push rod (18) is arranged in the middle of the top of the floating block (14), the top of the ejector rod (18) is fixed at the middle position of the bottom of the closing plate (17), the second purifying layer (2) is filled with filter materials (19), and a plurality of air holes (20) with the aperture smaller than the diameter of the filter material (19) are uniformly arranged on the bottom wall of the second purification layer (2) at intervals.
2. The integrated electroplating waste gas treatment system according to claim 1, characterized in that: the direction subassembly (15) are including guide bar (151) that the symmetry set up, mount pad (11) are located between two guide bar (151), it is provided with gib block (21) to float piece (14) week side near the top portion, gib block (21) slide from top to bottom in guide bar (151).
3. The integrated electroplating waste gas treatment system according to claim 2, characterized in that: the top of the sealing plate (17) is close to the edge part and is provided with a connecting strip (171) of an annular structure, the bottom of the connecting strip (171) is provided with a filter screen (22), and one side of the filter screen (22) far away from the connecting strip (171) is connected to the bottom layer wall of the transition layer (3).
4. The integrated electroplating waste gas treatment system according to claim 3, characterized in that: the part of the wall of the bottom layer of the transition layer (3) close to the exhaust port (16) is inclined to provide a flow guide surface (23), and the distance from the top of the flow guide surface (23) to the first purification layer (4) is less than the distance from the top of the flow guide surface (23) to the first purification layer (4).
5. The integrated electroplating waste gas treatment system according to claim 1, characterized in that: tower body (1) is provided with axis of rotation (24), axis of rotation (24) both sides difference swivelling joint purifies the lateral wall of the relative both sides in layer (2) in the second, axis of rotation (24) are provided with the stirring piece that is used for stirring filter material (19), shrouding (17) are provided with and are used for driving the rotatory drive assembly (25) of axis of rotation (24) when shrouding (17) slide from top to bottom.
6. The integrated electroplating waste gas treatment system according to claim 5, characterized in that: the driving assembly (25) comprises a driving rack (251) and a transmission gear (252), the transmission gear (252) is fixed on the outer peripheral side of the rotating shaft (24), the bottom of the driving rack (251) is fixed at the middle position of the top of the sealing plate (17) and extends into the second purification layer (2), and the driving rack (251) is meshed with the transmission gear (252).
7. The integrated electroplating waste gas treatment system according to claim 6, characterized in that: the wall of the bottom layer of the second purification layer (2) is provided with a stop block (26), the height of the stop block (26) is higher than the filling height of the filter material (19), a blocking groove (27) is formed in the middle of the stop block (26), the rotating shaft (24) penetrates through the blocking groove (27) and the transmission gear (252) is located in the blocking groove (27), and the driving rack (251) slides up and down in the blocking groove (27).
8. The integrated electroplating waste gas treatment system according to claim 5, characterized in that: the stirring piece is stirring strip (28), stirring strip (28) have a plurality ofly and even two set up in axis of rotation (24) periphery side, stirring strip (28) are arc strip structure.
9. The integrated electroplating waste gas treatment system according to claim 1, characterized in that: the spray pipe (8) is provided with an atomizing nozzle (801).
10. An integrated processing method of plating waste gas, characterized in that, an integrated processing system of plating waste gas according to any one of claims 1 to 9 is adopted, comprising the steps of:
firstly, introducing electroplating waste gas into the first purification layer (4) from the air inlet pipe (7), starting the water suction pump (9) to extract the solution in the storage layer (5), spraying the solution in the first purification layer (4) through the spray pipe (8), and neutralizing the introduced waste gas; then the floating block (14) is driven to float by the solution with the rising liquid level, and simultaneously the sealing plate (17) moves upwards by matching with the continuously introduced waste gas until the sealing plate (17) is separated from the exhaust port (16), the waste gas neutralized for a long time enters the transition layer (3), and the floating block (14) is separated from the holding tank (12), so that the solution enters the holding tank (12) and then is discharged into the reserve layer (5) through the water outlet (13); when the liquid level of the solution in the first purification layer (4) is reduced and the quantity of waste gas is reduced, the floating block (14) slides into the accommodating groove (12) to close the water outlet (13), and meanwhile, the sealing plate (17) slides into the air outlet (16) to block the air outlet (16); and finally, the neutralized waste gas entering the transition layer (3) is further neutralized and filtered by a filter material (19) and then is discharged from the gas outlet pipe (6).
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