CN217963770U

CN217963770U - Metal strip cleaning and drying device with recovered water mist

Info

Publication number: CN217963770U
Application number: CN202221958867.4U
Authority: CN
Inventors: 李锐; 阳桂平; 秦昌松
Original assignee: Guangxi Liuzhou Yinhai Aluminum Industry Co ltd
Current assignee: Guangxi Liuzhou Yinhai Aluminum Industry Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-12-06
Anticipated expiration: 2032-07-27

Abstract

The utility model provides a metal strip cleaning and drying device with recovered water mist, which comprises a cleaning unit, an extrusion roller, a drying unit, a mist discharge cover, a mist discharge pipe, a fan, a cold-heat exchanger and a water return pipe, wherein a cleaning water tank, the extrusion roller and a drying box body of the drying unit of the cleaning unit are sequentially arranged along the conveying direction of the metal strip; the fog discharging cover is positioned between the cleaning water tank and the drying box body and is covered over the squeeze roller, the fog discharging cover is connected with an air inlet port of the fan through a fog discharging pipe, an air outlet port of the fan is connected with an inlet hot end of the cold-heat exchanger, an outlet hot end of the cold-heat exchanger is connected with an inlet end of the cleaning water tank through a water return pipe, an inlet cold end of the cold-heat exchanger is an external water receiving port, and an outlet cold end of the cold-heat exchanger is an external water outlet. The device can effectively collect diffused water mist, ensures that no secondary pollution is caused in the process of finishing the cleaning and drying procedures of the metal strip, and avoids the water mist from corroding equipment facilities in the surrounding environment and recycling deionized water.

Description

Metal strip cleaning and drying device with recovered water mist

Technical Field

The utility model relates to a metal strip finishing treatment facility technical field, in particular to metal strip cleaning and drying device of water smoke is retrieved in area.

Background

The metal strip is on the cleaning unit of finishing unit, aim at the metal strip surface in service through high pressure cleaning equipment's shower nozzle in the washing water tank according to the process to spray the washing to the greasy dirt and the impurity on metal strip surface, the metal strip that comes out from washing water tank exit end is through the ponding of wringing roller extrusion surface, extrudees the clean back to ponding, reentrants stoving incasement and carries out drying process, and then accomplishes the washing stoving process. However, due to the requirement of production efficiency, the running speed of the metal strip is fast and the temperature of the deionized water required by the production process is usually higher than 90 ℃, so that a large amount of deionized water is volatilized into water mist, the water mist drifts to an open position outside the cleaning box and diffuses along with the metal strip, the water mist meets peripheral equipment facilities to form condensed water drops, the condensed water drops drop on the running metal strip and then enter the drying box along with the metal strip, when the metal strip is not completely dried in the drying box, the residual water drops can cause secondary pollution on the surface quality of the metal strip, especially, the surface quality of part of non-ferrous metal strips has extremely high requirements, such as aluminum alloy strips of automobile plates.

At present, a water mist treatment method of a metal strip cleaning unit is simple, and particularly, an axial flow fan is used for blowing air in a reverse direction aiming at a metal strip running at the outlet end of a cleaning water tank so as to inhibit water mist from diffusing outwards. The method has the biggest defect that water mist cannot be completely and effectively treated, part of the water mist is blown to the periphery by the axial flow fan, although secondary pollution to the metal strip is reduced, the water mist still diffuses into the environment, so that the environment humidity is increased, the corrosion of equipment facilities and finished metal strips is accelerated, the water mist cannot be recycled, and the supply amount of deionized water of a circulating cleaning system is increased.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a metal strip cleaning and drying apparatus with recovered water mist, which can effectively collect the diffused water mist, ensure no secondary pollution during the process of cleaning and drying the metal strip, and avoid the water mist from corroding the surrounding equipment and recycling the deionized water.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the metal strip cleaning and drying device with the recovered water mist comprises a cleaning unit, a squeezing roller and a drying unit, wherein a cleaning water tank of the cleaning unit, the squeezing roller and a drying box body of the drying unit are sequentially arranged along the conveying direction of the metal strip; the device also comprises a fog exhaust cover, a fog exhaust pipe, a fan, a cold-heat exchanger and a water return pipe; the fog discharging cover is located between the cleaning water tank and the drying box body and is covered over the squeeze roller, the fog discharging cover is connected with an air inlet port of the fan through a fog discharging pipe, an air outlet port of the fan is connected with an inlet hot end of the cold-heat exchanger, an outlet hot end of the cold-heat exchanger is connected with an inlet end of the cleaning water tank through a water return pipe, an inlet cold end of the cold-heat exchanger is an external water receiving port and used for being connected with an external water source, and an outlet cold end of the cold-heat exchanger is an external water outlet and used for being connected with an external water drainage pipe.

Preferably, the fog exhaust cover is in a cone structure, and the tip of the cone structure is located on the side of the fog exhaust pipe.

Preferably, the size of the cover opening of the fog discharge cover along the conveying direction of the metal strip is larger than the distance between the cleaning water tank and the drying box body.

Preferably, the fan is a centrifugal fan.

Preferably, one end of the water return pipe connected with the washing water tank is located above the liquid level of the washing water tank.

Preferably, the cold-heat exchanger is connected with the washing water tank through an overflow pipe, one end of the overflow pipe, which is connected with the cold-heat exchanger, is close to the hot end of the inlet of the cold-heat exchanger, and one end of the overflow pipe, which is connected with the washing water tank, is located above the inlet of the washing water tank, into which the metal strip enters.

Preferably, a plurality of spray heads are arranged in the cleaning water tank, the spray heads are positioned on the upper side and the lower side of the metal strip, the spray heads are connected with high-pressure cleaning equipment of the cleaning unit, and the spraying direction of each spray head faces to the metal strip and is perpendicular to the conveying direction of the metal strip.

Preferably, a plurality of air nozzles are arranged in the drying box body, the air nozzles are located on the upper side and the lower side of the metal strip, the air nozzles are connected with high-temperature drying equipment of the drying unit, the spraying directions of the air nozzles face towards the metal strip and are arranged in an inclined mode, and the inclined direction is the direction of an inlet where the metal strip enters the drying box body.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a washing and drying device is from row's fog cover, row's fog pipe, fan, cold and hot exchanger and wet return in area constitute the concentrated collection and the recovery subassembly of water smoke to realize the water smoke of metal strip washing and drying process on the cleaning unit and collect, like this, one can avoid forming the condensation water droplet after the water smoke diffusion and drip on metal strip, avoid causing secondary pollution, influence the cleaning performance, two can avoid increasing ambient humidity after the water smoke diffusion, accelerate the corruption of equipment facilities and finished product metal strip; and thirdly, water mist can be effectively collected, recycling is achieved, and cost is saved.

2. The utility model has the advantages of simple overall structure, convenient operation, environmental protection and no pollution, and the practicality is better.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Description of the main elements

In the figure: 1. a fog discharging cover; 2. a mist discharge pipe; 3. a fan; 4. a cold-heat exchanger; 5. an external water receiving port; 6. an overflow pipe; 7. a water return pipe; 8. a spray head; 9. cleaning the water tank; 10. a wringing roller; 11. a tuyere; 12. drying the box body; 13. a metal strip.

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

Referring to fig. 1, in a preferred embodiment of the present invention, the metal strip cleaning and drying device with recovered water mist includes a cleaning unit, an extrusion roller 10, a drying unit, a mist exhaust cover 1, a mist exhaust pipe 2, a blower 3, a heat exchanger 4 and a water return pipe 7.

A cleaning water tank 9, a squeezing roller 10 and a drying box body 12 of the cleaning unit are sequentially arranged along the conveying direction of a metal strip 13; the fog exhaust cover 1 is located between a cleaning water tank 9 and a drying box body 12 and is covered over a squeezing roller 10, the fog exhaust cover 1 is connected with an air inlet port of a fan 3 through a fog exhaust pipe 2, an exhaust port of the fan 3 is connected with an inlet hot end of a cold-heat exchanger 4, an outlet hot end of the cold-heat exchanger 4 is connected with an inlet end of the cleaning water tank 9 through a water return pipe 7, an inlet cold end of the cold-heat exchanger 4 is an external water receiving port 5 and used for being connected with an external water source, and an outlet cold end of the cold-heat exchanger 4 is an external water outlet and used for being connected with an external drain pipe.

The utility model discloses a washing drying device washs operation through the cleaning unit to metal strip 13, metal strip 13 after wasing through squeeze roll 10 extrusion, dry metal strip 13 through the stoving subassembly, through row fog cover 1, arrange fog pipe 2, fan 3, the water smoke recovery system that cold and hot exchanger 4 and wet return 7 constitute concentrates the collection and retrieves wasing produced water smoke, specifically, water smoke follows metal strip 13 effusion back in washing water tank 9, by row fog cover 1 cage cover of top between washing water tank 9 and drying water tank, it forms the negative pressure to arrange fog cover 1 under fan 3's effect, water smoke is inhaled and arranged in the fog cover 1, and enter into cold and hot exchanger 4 through arranging fog pipe 2 and fan 3, water smoke carries out the heat exchange with the leading-in cold water in cold and hot exchanger 4 outside, water smoke becomes the water droplet, flow back to washing water tank 9 through wet return 7, thereby realized recycle, and we know, the liquid that the washing used is deionized water or demineralized water, high cost, can recycle water smoke, can practice thrift manufacturing cost to a certain extent.

The utility model discloses in, the cleaning unit is used for spraying and washes the greasy dirt and the impurity on metal strip 13 surface, and it is prior art, and in this embodiment, the inside of wasing water tank 9 is provided with a plurality of shower nozzles 8, shower nozzle 8 is located the upper and lower both sides of metal strip 13, and the preferred is evenly arranged, the high pressure cleaning equipment of cleaning unit is connected to shower nozzle 8, and the injection direction of each shower nozzle 8 all faces metal strip 13, and perpendicular to metal strip 13's direction of delivery, i.e. shower nozzle 8 sprays against the surface of metal strip 13, and the mode of perpendicular injection can ensure that the area of spraying covers metal strip 13 surface, and high pressure cleaning equipment includes high-pressure pump and heating element, and the high-pressure pump is arranged in sucking the liquid that washs in the water tank 9 to shower nozzle 8 in order to spray, and heating element is used for heating treats the liquid that sprays for liquid can form the high temperature more than 90 degrees, satisfies the production technology requirement, because high pressure cleaning equipment is prior art, not shown in the attached drawing.

Further, the utility model discloses a drying unit can carry out drying process to the metal strip 13 after wasing and the extrusion, in this embodiment, be provided with a plurality of nozzles 11 in the stoving box 12, nozzles 11 are located metal strip 13's upper and lower both sides, and the preferred entry that is close to stoving box 12 metal strip 13 gets into sets up, and evenly sets up, drying unit's high temperature drying equipment is connected to nozzles 11, nozzles 11's injection direction all faces metal strip 13, and the slope sets up, and the incline direction does the entry place direction that stoving box 12 metal strip 13 got into, promptly, the flow direction of the hot-blast (for the air of high temperature) that nozzles 11 jetted out is opposite with metal strip 13's direction of delivery to improve the effect of drying.

Further, the utility model discloses a squeeze roll 10 can extrude the metal strip 13 after wasing to drop most deionized water extrusion, the follow-up stoving of being convenient for, it is preferred, the wringing roller is steel base rubber-lined roller.

Furthermore, the utility model discloses a row of fog cover 1 is covered and is established the top in the clearance between washing tank 9 and the stoving box 12, in order to reduce the possibility that water smoke scatters to the outside, the size of row's fog cover 1 cover mouth along the direction of delivery of metal strip 13 is greater than the interval between washing tank 9 and the stoving box 12, promptly, row of fog cover 1 can cover the spacious position between washing tank 9 exit end and the stoving box 12 entry end; the fog exhaust cover 1 is in a cone structure, and the tip of the cone structure is positioned at the side of the fog exhaust pipe 2, so that the water fog can rise and flow quickly.

Further, the utility model discloses a fan 3 can make row fog pipe 2 form the negative pressure to guide water smoke to collect to cold heat exchanger 4 in, realized wasing the effective collection of the outside diffusion water smoke of box, in this embodiment, fan 3 is centrifugal fan 3, and this centrifugal fan 3 is preferred to be driven by inverter motor, can be according to the volume of volatilizing of diffusion water smoke and adjust the power size at any time.

Further, the utility model discloses a cold heat exchanger 4 is used for the condensation of water smoke to retrieve, it connects external water source through outside water receiving mouth 5 and introduces cold water, cold water after the heat exchange is derived through the outside outlet, in order to form the cold water circulation, guarantee the continuous effective work of cold heat exchanger 4, water smoke gets into the inboard from cold heat exchanger 4's air inlet end, form the difference in temperature with endless cold water, thereby the condensation becomes the water droplet, fall to the lower part of condensation exchanger 4, flow to the cleaning water tank 9 in from wet return 7 under its dead weight, realize the reuse of deionized water and retrieve, practice thrift the cost, at this embodiment, cold heat exchanger 4 entry hot junction is located cold heat exchanger 4's top, the export hot junction is located cold heat exchanger 4's bottom, wet return 7 connects the one end tip that washs water tank 9 and is located the top of wasing water tank 9 liquid level. Preferably, still link to each other through overflow pipe 6 between cold and heat exchanger 4 and the washing water tank 9, the one end that overflow pipe 6 connects cold and heat exchanger 4 is close to the entry hot junction of cold and heat exchanger 4, the one end that overflow pipe 6 connects washing water tank 9 is located the top of the entry that washing water tank 9 supplied metal strip 13 to get into to concentrate the water smoke of non-condensation through overflow pipe 6 and arrange to washing water tank 9 in, the water smoke of avoiding the overflow spreads to washing the box outside, avoids remaining water smoke to spread to the environment again promptly, causes the processing incomplete, and then has realized the closed loop of water smoke and has collected.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims

1. The metal strip cleaning and drying device with the recovered water mist comprises a cleaning unit, a squeezing roller and a drying unit, wherein a cleaning water tank of the cleaning unit, the squeezing roller and a drying box body of the drying unit are sequentially arranged along the conveying direction of the metal strip; the method is characterized in that: the device also comprises a fog exhaust cover, a fog exhaust pipe, a fan, a cold-heat exchanger and a water return pipe; the fog discharging cover is located between the cleaning water tank and the drying box body and is covered over the squeeze roller, the fog discharging cover is connected with an air inlet port of the fan through a fog discharging pipe, an air outlet port of the fan is connected with an inlet hot end of the cold-heat exchanger, an outlet hot end of the cold-heat exchanger is connected with an inlet end of the cleaning water tank through a water return pipe, an inlet cold end of the cold-heat exchanger is an external water receiving port and used for being connected with an external water source, and an outlet cold end of the cold-heat exchanger is an external water outlet and used for being connected with an external water drainage pipe.

2. The apparatus for cleaning and drying a metal strip with recovered mist of claim 1, wherein: the fog exhaust cover is in a cone structure, and the tip of the cone structure is positioned at the side of the fog exhaust pipe.

3. The apparatus for cleaning and drying a metal strip with recovered mist as set forth in claim 1, wherein: the size of the cover opening of the fog discharge cover along the conveying direction of the metal strip is larger than the distance between the cleaning water tank and the drying box body.

4. The apparatus for cleaning and drying a metal strip with recovered mist as set forth in claim 1, wherein: the fan is a centrifugal fan.

5. The apparatus for cleaning and drying a metal strip with recovered mist as set forth in claim 1, wherein: the end part of one end of the water return pipe connected with the cleaning water tank is positioned above the liquid level of the cleaning water tank.

6. The apparatus for cleaning and drying a metal strip with recovered mist as set forth in claim 1, wherein: the cold-heat exchanger still links to each other through the overflow pipe between the washing water tank, the one end that the overflow pipe connects the cold-heat exchanger is close to the entry hot junction of cold-heat exchanger, the one end that the overflow pipe is connected the washing water tank is located the top that the entry that the washing water tank supplied the metal strip to get into.

7. The apparatus for cleaning and drying a metal strip with recovered mist as set forth in claim 1, wherein: the cleaning water tank is characterized in that a plurality of spray heads are arranged inside the cleaning water tank, the spray heads are located on the upper side and the lower side of the metal strip, the spray heads are connected with high-pressure cleaning equipment of the cleaning unit, and the spraying direction of each spray head faces towards the metal strip and is perpendicular to the conveying direction of the metal strip.

8. The apparatus for cleaning and drying a metal strip with recovered mist as set forth in claim 1, wherein: the drying box is characterized in that a plurality of air nozzles are arranged in the drying box body, the air nozzles are located on the upper side and the lower side of the metal strip, the air nozzles are connected with high-temperature drying equipment of the drying unit, the spraying directions of the air nozzles all face towards the metal strip and are obliquely arranged, and the oblique direction is the direction of an inlet where the metal strip of the drying box body enters.