CN210332076U - Smoke dust removing device for galvanization - Google Patents

Abstract

The utility model discloses a smoke and dust removing device for galvanization belongs to galvanizing equipment technical field, including the spray column, the upper portion of spray column is provided with the shower head, the shower head with the sodium hydroxide mechanism intercommunication that supplies of spray column one side, in the spray column the below of shower head is provided with the gas distribution mechanism, the opposite side of spray column is provided with into smoke and dust mechanism, advance the smoke and dust mechanism pass through the second gas-supply pipe with the spray column intercommunication, the second gas-supply pipe is located the below of gas distribution mechanism, the top intercommunication of spray column has the third gas-supply pipe, third gas-supply pipe and ammonia absorption mechanism intercommunication, be provided with the second fan on the third gas-supply pipe. Through the arrangement of the smoke dust inlet mechanism, the sodium hydroxide supply mechanism, the spray tower and the ammonia gas absorption mechanism, ammonium chloride, zinc chloride and zinc oxide substance particles in smoke dust can be fully absorbed.

Description

Smoke dust removing device for galvanization

Technical Field

The utility model relates to a galvanizing equipment technical field, concretely relates to smoke and dust removing device for galvanization.

Background

Galvanization refers to a surface treatment technique for plating a layer of zinc on the surface of metal, alloy or other materials to play a role in beauty, rust prevention and the like. The method mainly adopted is hot galvanizing. Zinc is easily dissolved in acid and alkali, so it is called amphoteric metal, zinc hardly changes in dry air, and in humid air, a dense basic zinc carbonate film is formed on the zinc surface. The standard electrode potential of zinc is-0.76V, and for steel matrix, the zinc coating belongs to an anodic coating, which is mainly used for preventing corrosion of steel, and the relation between the quality of protective performance and the coating thickness is very large. After the zinc coating is purified, dyed or coated with a light protecting agent, the protective property and the decorative property of the zinc coating can be obviously improved.

Hot galvanizing, also called hot dip galvanizing, is an effective metal corrosion prevention mode, is mainly used for metal structure facilities in various industries, and is used for immersing steel members subjected to rust removal into molten zinc liquid melted at about 500 ℃ to enable a zinc layer to be attached to the surfaces of the steel members, thereby achieving the purpose of corrosion prevention. The hot galvanizing process flow comprises the following steps: pickling a finished product, washing with water, adding a plating assistant solution, drying, plating on a rack, cooling, carrying out chemical treatment, cleaning, polishing and finishing by hot zinc.

Because smoke dust containing ammonium chloride, zinc chloride and zinc oxide substance particles is generated when the workpiece after the plating assistance is subjected to zinc dipping, the zinc plating workers can frequently suck the ammonium chloride, zinc chloride and zinc oxide substance particles, and the health of the zinc plating workers brings potential threats.

SUMMERY OF THE UTILITY MODEL

Aiming at the defect that the prior work piece after plating is dipped with zinc can generate smoke dust containing ammonium chloride, zinc chloride and zinc oxide particles, the utility model aims to provide a smoke dust removing device for galvanizing.

In order to realize the above-mentioned purpose, the utility model provides a smoke and dust removing device for galvanization, including the spray column, the upper portion of spray column is provided with the shower head, the shower head with the sodium hydroxide mechanism intercommunication that supplies of spray column one side, in the spray column the below of shower head is provided with the gas distribution mechanism, the opposite side of spray column is provided with into smoke and dust mechanism, advance the smoke and dust mechanism through the second gas-supply pipe with the spray column intercommunication, the second gas-supply pipe is located the below of gas distribution mechanism, the top intercommunication of spray column has the third gas-supply pipe, third gas-supply pipe and ammonia absorption mechanism intercommunication, be provided with the second fan on the third gas-supply pipe.

The working principle is as follows: the smoke dust containing ammonium chloride, zinc chloride and zinc oxide particles generated during the galvanization is conveyed into a spray tower through a smoke dust inlet mechanism, meanwhile, a sodium hydroxide solution provided with heat by a sodium hydroxide mechanism is sprayed from a spray head, at the moment, smoke dust and hot sodium hydroxide form countercurrent, ammonium chloride and the sodium hydroxide solution react under the heating condition to generate sodium chloride, ammonia water and zinc chloride and the sodium hydroxide solution react to generate zinc hydroxide precipitate and sodium chloride, zinc oxide and the sodium hydroxide solution react to generate sodium metazincate and water or zinc oxide and the sodium hydroxide solution react to generate sodium tetrahydroxy zincate, the generated ammonia gas is absorbed by an ammonia gas absorption mechanism, and the arrangement of a gas distribution mechanism ensures that the smoke dust can be fully dispersed, the contact area of the smoke dust and the hot sodium hydroxide is increased, the contact is thorough, and the ammonium chloride, the zinc chloride and the zinc oxide in the smoke dust can be thoroughly removed. Through the arrangement of the smoke dust inlet mechanism, the sodium hydroxide supply mechanism, the spray tower and the ammonia gas absorption mechanism, ammonium chloride, zinc chloride and zinc oxide substance particles in smoke dust can be fully absorbed, and the defect that the smoke dust containing the ammonium chloride, zinc chloride and zinc oxide substance particles can be generated when the workpiece subjected to plating assistance is subjected to zinc dipping in the prior art is overcome.

Further, supply sodium hydroxide mechanism includes first liquid case, transfer line and is located first valve and liquid pump on the transfer line, the one end of transfer line with the bottom communicating pipe of first liquid case, the other end of transfer line with the shower head intercommunication, be provided with the electrical heating board on the inner wall of first liquid case. The first liquid tank is internally provided with a sodium hydroxide solution, the top cover of the first liquid tank can be opened or closed, the electric heating plate heats the sodium hydroxide solution, and the electric heating plate is electrically connected with an external power supply.

Furthermore, be provided with rabbling mechanism in the first liquid incasement, rabbling mechanism is including being located push pedal in the first liquid incasement, being located a plurality of first through-holes that evenly set up in the push pedal, being located the telescopic link of push pedal bottom and being located the first motor of telescopic link bottom, the telescopic link passes and extends to the bottom outside of first liquid incasement. Push pedal, first through-hole, telescopic link and first motor play stirring effect from top to bottom, make the sodium hydroxide solution of first liquid incasement can fully be stirred evenly, make the reaction with ammonium chloride, zinc oxide material effectual.

Further, the gas distribution mechanism comprises at least two layers of supporting plates, a plurality of hollow ball particles are uniformly arranged on the upper portion of each layer of supporting plate, and a plurality of second through holes are uniformly formed in each layer of supporting plate. The hollow sphere particles are active carbon hollow sphere particles or plastic hollow sphere particles, the specific surface area of the hollow sphere particles is large, the gas distribution effect is good, ammonium chloride, zinc chloride and zinc oxide smoke can be fully dispersed, the contact with hot sodium hydroxide is increased, the reaction is more thorough, and the reaction efficiency is higher.

Furthermore, one side of each layer of the supporting plate is provided with a first opening, and a first sealing door is arranged outside the first opening. The arrangement of the first opening is convenient for replacing the hollow ball particles.

Furthermore, the bottom of the spray tower is communicated with a liquid storage tank, the bottom of the liquid storage tank is provided with a liquid discharge pipe, and a second valve is arranged on the liquid discharge pipe. The reservoir serves the purpose of storing the reaction product and can be discharged from the drain.

Further, it includes first gas-supply pipe to advance the smoke and dust mechanism, first gas-supply pipe one end communicating pipe has the cover that induced drafts, the other end intercommunication of first gas-supply pipe has filter equipment, filter equipment with second gas-supply pipe intercommunication, be provided with first fan on the first gas-supply pipe. Under the effect of first fan, the smoke and dust gets into the cover that induced drafts to in getting into the spray column through the second gas-supply pipe after first gas-supply pipe filters through filter equipment, the outside of first fan is provided with the filter cloth, prevents that the smoke and dust from getting into first fan and influencing the life-span.

Furthermore, filter equipment includes the dust removal case, be provided with a plurality of filter screens in the dust removal case, first gas-supply pipe is located one side of dust removal case, the second gas-supply pipe is located the opposite side of dust removal case. The filter screen filters and removes dust in the smoke dust firstly, and ammonium chloride, zinc chloride and zinc oxide mainly enter the spray tower, so that the contact effectiveness with sodium hydroxide is improved, and the reaction efficiency is high.

Furthermore, a second opening is formed in the bottom of each filter screen, and a second sealing door is arranged outside each second opening. The second opening is arranged to facilitate the discharge of the filtered dust.

Further, ammonia absorption mechanism includes the second liquid tank, the second gas-supply pipe with the second liquid tank intercommunication, be provided with the (mixing) shaft in the second liquid tank, be provided with stirring vane on the (mixing) shaft, the (mixing) shaft extends to the top outside of second liquid tank, the top of (mixing) shaft is provided with the second motor, the top of second liquid tank is provided with the ventilation window. The second liquid incasement has nitric acid, and the ammonia reacts with the nitric acid solution and generates ammonium nitrate, and (mixing) shaft and stirring vane play the stirring effect, make the ammonia can fully contact and react with the nitric acid solution, and the absorption effect is better, and the ventilation window plays the effect of balanced external and second liquid incasement pressure, guarantees safety, and the top of second liquid case is provided with the feed inlet bottom and is provided with the leakage fluid dram, and all is provided with the door on feed inlet and the leakage fluid dram.

To sum up, the utility model discloses compare in prior art's beneficial effect and be:

(1) through the arrangement of the smoke dust inlet mechanism, the sodium hydroxide supply mechanism, the spray tower and the ammonia gas absorption mechanism, ammonium chloride, zinc chloride and zinc oxide substance particles in smoke dust can be fully absorbed;

(2) the push plate, the first through hole, the telescopic rod and the first motor play a role in stirring up and down, so that the sodium hydroxide solution in the first liquid tank can be fully and uniformly stirred, and the reaction effect with ammonium chloride, zinc chloride and zinc oxide substances is good;

(3) the hollow spherical particles are active carbon hollow spherical particles or plastic hollow spherical particles, the specific surface area of the hollow spherical particles is large, the gas distribution effect is good, ammonium chloride, zinc chloride and zinc oxide smoke can be fully dispersed, the contact with hot sodium hydroxide is increased, the reaction is more thorough, and the reaction efficiency is higher;

(4) under the action of a first fan, smoke and dust enter the air suction cover, are filtered by the filter device through the first gas pipe and then enter the spray tower through the second gas pipe, and filter cloth is arranged outside the first fan to prevent the smoke and dust from entering the first fan and influencing the service life;

(5) the filter screen filters and removes dust in the smoke dust, and the ammonium chloride, the zinc chloride and the zinc oxide enter the spray tower, so that the contact effectiveness with the sodium hydroxide is improved, and the reaction efficiency is high;

(6) the second liquid incasement has nitric acid, and the ammonia reacts with the nitric acid solution and generates ammonium nitrate, and (mixing) shaft and stirring vane play the stirring effect, make the ammonia can fully contact and react with the nitric acid solution, and the absorption effect is better, and the ventilation window plays the effect of balanced external and second liquid incasement pressure, guarantees safety, and the top of second liquid case is provided with the feed inlet bottom and is provided with the leakage fluid dram, and all is provided with the door on feed inlet and the leakage fluid dram.

Drawings

FIG. 1 is a schematic structural view of a smoke and dust removing device for galvanization of the present invention.

Labeled as: 1-a spray tower, 2-a support plate, 3-a second through hole, 4-hollow spherical particles, 5-a spray head, 6-a liquid storage tank, 7-a liquid discharge pipe, 8-a second valve, 9-a first liquid tank, 10-an electric heating plate, 11-a push plate, 12-a first through hole, 13-a telescopic rod, 14-a first motor, 15-a top cover, 16-a liquid conveying pipe, 17-a liquid pump, 18-a first valve, 19-a second gas conveying pipe, 20-a first gas conveying pipe, 21-an air suction cover, 22-a dust removal tank, 23-a first fan, 24-a filter screen, 25-a second opening, 26-a second sealing door, 27-a third gas conveying pipe, 28-a second fan, 29-a second liquid tank and 30-a stirring shaft, 31-stirring blade, 32-second motor, 33-ventilation window, 34-feeding hole, 35-liquid discharging hole, 36-first opening and 37-first sealing door.

Detailed Description

All features disclosed in this specification may be combined in any combination, except features and/or steps that are mutually exclusive.

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to fig. 1 and the specific embodiment.

Example 1

Referring to fig. 1, a smoke dust removing device for galvanization comprises a spray tower 1, a spray header 5 is arranged on the upper portion of the spray tower 1, the spray header 5 is communicated with a sodium hydroxide supply mechanism on one side of the spray tower 1, a gas distribution mechanism is arranged below the spray header 5 in the spray tower 1, a smoke dust inlet mechanism is arranged on the other side of the spray tower 1, the smoke dust inlet mechanism is communicated with the spray tower 1 through a second gas pipe 19, the second gas pipe 19 is located below the gas distribution mechanism, a third gas pipe 27 is communicated with the top of the spray tower 1, the third gas pipe 27 is communicated with an ammonia gas absorption mechanism, and a second fan 28 is arranged on the third gas pipe 27.

The working principle is as follows: the smoke dust containing ammonium chloride, zinc chloride and zinc oxide particles generated during the galvanization is conveyed into the spray tower 1 through a smoke dust inlet mechanism, meanwhile, the sodium hydroxide solution provided with heat by the sodium hydroxide mechanism is sprayed from the spray header 5, at the moment, smoke dust and hot sodium hydroxide form countercurrent, ammonium chloride and the sodium hydroxide solution react under the heating condition to generate sodium chloride, ammonia water and zinc chloride and the sodium hydroxide solution react to generate zinc hydroxide precipitate and sodium chloride, zinc oxide and the sodium hydroxide solution react to generate sodium metatitanate and water or zinc oxide and the sodium hydroxide solution react to generate sodium tetrahydroxy zincate, the generated ammonia gas is absorbed by the ammonia gas absorption mechanism, and the arrangement of the gas distribution mechanism ensures that the smoke dust can be fully dispersed, the contact area of the smoke dust and the hot sodium hydroxide is increased, the contact is thorough, and the ammonium chloride, the zinc chloride and the zinc oxide in the smoke dust can be thoroughly removed. Through the arrangement of the smoke dust inlet mechanism, the sodium hydroxide supply mechanism, the spray tower 1 and the ammonia gas absorption mechanism, ammonium chloride, zinc chloride and zinc oxide substance particles in smoke dust can be fully absorbed, and the defect that the smoke dust containing the ammonium chloride, zinc chloride and zinc oxide substance particles can be generated when the workpiece subjected to plating assistance is subjected to zinc dipping in the prior art is overcome.

Example 2

Referring to fig. 1, based on embodiment 1, the sodium hydroxide supply mechanism includes a first liquid tank 9, an infusion tube 16, and a first valve 18 and a liquid pump 17 located on the infusion tube 16, one end of the infusion tube 16 is communicated with a bottom of the first liquid tank 9, the other end of the infusion tube 16 is communicated with the shower head 5, and an electric heating plate 10 is disposed on an inner wall of the first liquid tank 9.

Sodium hydroxide solution is arranged in the first liquid tank 9, the top cover 15 of the first liquid tank 9 can be opened or closed, the electric heating plate 10 heats the sodium hydroxide solution, and the electric heating plate 10 is electrically connected with an external power supply.

Example 3

Referring to fig. 1, based on embodiment 2, a stirring mechanism is arranged in the first liquid tank 9, the stirring mechanism includes a push plate 11 located in the first liquid tank 9, a plurality of uniformly arranged first through holes 12 located on the push plate 11, an expansion link 13 located at the bottom of the push plate 11, and a first motor 14 located at the bottom of the expansion link 13, and the expansion link 13 passes through and extends to the outside of the bottom of the first liquid tank 9.

The push plate 11, the first through hole 12, the telescopic rod 13 and the first motor 14 play a role of stirring up and down, so that the sodium hydroxide solution in the first liquid tank 9 can be fully stirred uniformly, and the reaction effect with ammonium chloride, zinc chloride and zinc oxide substances is good.

Example 4

Referring to fig. 1, based on embodiment 1, the gas distribution mechanism includes at least two layers of support plates 2, a plurality of hollow sphere particles 4 are uniformly disposed on the upper portion of each layer of support plate 2, and a plurality of second through holes 3 are uniformly disposed on each layer of support plate 2.

The hollow sphere particles 4 are the activated carbon hollow sphere particles 4 or the plastic hollow sphere particles 4, the specific surface area of the hollow sphere particles 4 is large, the gas distribution effect is good, ammonium chloride, zinc chloride and zinc oxide smoke can be fully dispersed, the contact with hot sodium hydroxide is increased, the reaction is more thorough, and the reaction efficiency is higher.

Example 5

Referring to fig. 1, according to embodiment 4, a first opening 36 is provided at one side of each layer of the support plate 2, and a first sealing door 37 is provided outside the first opening 36.

The provision of the first opening 36 facilitates replacement of the hollow sphere particles 4.

Example 6

Referring to fig. 1, in embodiment 1, a liquid storage tank 6 is communicated with the bottom of the spray tower 1, a liquid discharge pipe 7 is arranged at the bottom of the liquid storage tank 6, and a second valve 8 is arranged on the liquid discharge pipe 7.

The reservoir 6 serves the purpose of storing the reaction product and can be discharged from a drain 7.

Example 7

Referring to fig. 1, based on embodiment 1, the smoke and dust inlet mechanism includes a first air pipe 20, an air suction hood 21 is arranged at one end of the first air pipe 20 in a communicating mode, a filtering device is communicated with the other end of the first air pipe 20, the filtering device is communicated with a second air pipe 19, and a first fan 23 is arranged on the first air pipe 20.

Under the effect of first fan 23, the smoke and dust gets into the cover 21 that induced drafts to in getting into spray column 1 through second gas-supply pipe 19 after first gas-supply pipe 20 filters the device, the outside of first fan 23 is provided with the filter cloth, prevents that the smoke and dust from getting into first fan 23 and influencing the life-span.

Example 8

Referring to fig. 1, based on embodiment 7, the filtering apparatus includes a dust removing box 22, a plurality of filter screens 24 are disposed in the dust removing box 22, the first air duct 20 is located on one side of the dust removing box 22, and the second air duct 19 is located on the other side of the dust removing box 22.

The filter screen 24 filters and removes dust in the smoke dust, and the ammonium chloride, the zinc chloride and the zinc oxide which enter the spray tower 1 are mainly ammonium chloride, zinc chloride and zinc oxide, so that the contact effectiveness with the sodium hydroxide is improved, and the reaction efficiency is high.

Example 9

Referring to fig. 1, according to embodiment 8, the bottom of each filter screen 24 is provided with a second opening 25, and a second sealing door 26 is disposed outside the second opening 25.

The second opening 25 is provided to facilitate the discharge of the filtered dust.

Example 10

Referring to fig. 1, based on embodiment 1, the ammonia gas absorption mechanism includes a second liquid tank 29, the second gas pipe 19 is communicated with the second liquid tank 29, a stirring shaft 30 is disposed in the second liquid tank 29, a stirring blade 31 is disposed on the stirring shaft 30, the stirring shaft 30 extends to the outside of the top of the second liquid tank 29, a second motor 32 is disposed at the top of the stirring shaft 30, and a ventilation window 33 is disposed at the top of the second liquid tank 29.

There is nitric acid in the second liquid tank 29, and the ammonia reacts with the nitric acid solution and generates ammonium nitrate, and (mixing) shaft 30 and stirring vane 31 play the stirring effect, make the ammonia can fully contact and react with the nitric acid solution, and the absorption effect is better, and ventilation window 33 plays the effect of balanced external and second liquid tank 29 internal pressure, guarantees safety, and the top of second liquid tank 29 is provided with feed inlet 34 bottom and is provided with leakage fluid dram 35, and all is provided with the door on feed inlet 34 and the leakage fluid dram 35.

Those skilled in the art should understand that the first fan 23, the second fan 28 and the liquid pump 17 are available in the prior art, and different models and specifications of products can be purchased in the market according to specific needs, for example, the model of the first fan and the model of the second fan are 4-72-5/A4-72, and the model of the liquid pump is G35-1.

The foregoing is a primary feature of the present solution and its advantages, and it should be understood by those skilled in the art that the present solution is not limited by the foregoing embodiments, and that the foregoing embodiments and descriptions are only illustrative of the principles of the present solution, and that various changes and modifications may be made therein without departing from the spirit and scope of the present solution, which fall within the scope of the invention as claimed, and the scope of the present solution is defined by the appended claims and their equivalents.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a releasable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through an intermediary profile, or both. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Claims (10)

1. The utility model provides a zinc-plating is with removing smoke and dust device, includes spray column (1), its characterized in that: the upper portion of spray column (1) is provided with shower head (5), shower head (5) with the confession sodium hydroxide mechanism intercommunication of spray column (1) one side, in spray column (1) the below of shower head (5) is provided with the gas distribution mechanism, the opposite side of spray column (1) is provided with into smoke and dust mechanism, advance smoke and dust mechanism through second gas-supply pipe (19) with spray column (1) intercommunication, second gas-supply pipe (19) are located the below of gas distribution mechanism, the top intercommunication of spray column (1) has third gas-supply pipe (27), third gas-supply pipe (27) and ammonia absorption mechanism intercommunication, be provided with second fan (28) on third gas-supply pipe (27).

2. The fume removing device for galvanization according to claim 1, wherein: the sodium hydroxide supply mechanism comprises a first liquid tank (9), a liquid conveying pipe (16) and a first valve (18) and a liquid pump (17) which are arranged on the liquid conveying pipe (16), one end of the liquid conveying pipe (16) is communicated with the bottom of the first liquid tank (9), the other end of the liquid conveying pipe (16) is communicated with the spray header (5), and an electric heating plate (10) is arranged on the inner wall of the first liquid tank (9).

3. The fume removing device for galvanization according to claim 2, wherein: be provided with rabbling mechanism in first liquid case (9), rabbling mechanism is including being located push pedal (11) in first liquid case (9), being located a plurality of first through-holes (12) that evenly set up on push pedal (11), being located telescopic link (13) of push pedal (11) bottom and being located first motor (14) of telescopic link (13) bottom, telescopic link (13) pass and extend to the bottom outside of first liquid case (9).

4. The fume removing device for galvanization according to claim 1, wherein: the gas distribution mechanism comprises at least two layers of supporting plates (2), a plurality of hollow ball particles (4) are uniformly arranged on the upper portion of each layer of supporting plate (2), and a plurality of second through holes (3) are uniformly arranged on each layer of supporting plate (2).

5. The fume removing device for galvanization of claim 4, wherein: one side of each layer of the supporting plate (2) is provided with a first opening (36), and a first sealing door (37) is arranged outside the first opening (36).

6. The fume removing device for galvanization according to claim 1, wherein: the bottom of the spray tower (1) is communicated with a liquid storage tank (6), a liquid discharge pipe (7) is arranged at the bottom of the liquid storage tank (6), and a second valve (8) is arranged on the liquid discharge pipe (7).

7. The fume removing device for galvanization according to claim 1, wherein: the smoke dust inlet mechanism comprises a first air pipe (20), one end of the first air pipe (20) is communicated with an air suction cover (21), the other end of the first air pipe (20) is communicated with a filtering device, the filtering device is communicated with a second air pipe (19), and a first fan (23) is arranged on the first air pipe (20).

8. The fume removing device for galvanization of claim 7, wherein: the filter equipment includes dust removal case (22), be provided with a plurality of filter screens (24) in dust removal case (22), first gas-supply pipe (20) are located one side of dust removal case (22), second gas-supply pipe (19) are located the opposite side of dust removal case (22).

9. The fume removing device for galvanization of claim 8, wherein: the bottom of each filter screen (24) is provided with a second opening (25), and a second sealing door (26) is arranged outside the second opening (25).

10. The fume removing device for galvanization according to claim 1, wherein: the ammonia absorption mechanism includes second liquid tank (29), second gas-supply pipe (19) with second liquid tank (29) intercommunication, be provided with (mixing) shaft (30) in second liquid tank (29), be provided with stirring vane (31) on (mixing) shaft (30), (mixing) shaft (30) extend to the top outside of second liquid tank (29), the top of (mixing) shaft (30) is provided with second motor (32), the top of second liquid tank (29) is provided with ventilation window (33).

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