CN101403083A

CN101403083A - Apparatus for generating zinc flower on surface of hot galvanizing strip steel coating

Info

Publication number: CN101403083A
Application number: CNA2008102348610A
Authority: CN
Inventors: 李�和; 郭继业; 李安位; 杨泽青; 杨泗峰; 宋祥三; 王珏
Original assignee: CHANGSHU HUAYE PLATE Co Ltd
Current assignee: CHANGSHU HUAYE PLATE Co Ltd
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2009-04-08

Abstract

A device for generating spangles on the surface of hot galvanizing band steel cladding belongs to the technical field of a special device for hot galvanizing band steel production and comprises a gas flow box and a water flow box which are up and down and oppositely arranged and a set of atomization mechanisms, wherein the atomization mechanism is arranged between the gas flow box and the water flow box along the length direction of the two boxes and further communicated with the two boxes; the atomization mechanism comprises a spray nozzle, the center of the spray nozzle is provided with a spray hole, and the spray hole is communicated with a spray slot of the spray head. The device is characterized in that, in the set of atomization mechanisms, the diameter of the spray hole in the spray head center of respective at least one of the atomization mechanisms at both ends of the gas flow box and the water flow box is larger than the diameter of the spray hole of the spray head center of the atomization mechanism in the middle of the gas flow box and the water flow box. The device has the advantages of solving the defect of different spangle sizes on the zinc coating caused by slow cooling in the middle and quick cooling at the both sides of the band steel and leading the sizes of the generated spangles to reach unanimity.

Description

The device of generating zinc flower on surface of hot galvanizing strip steel coating

Technical field

The invention belongs to the isolated plant technical field that hot-dip galvanized steel strip is produced, be specifically related to a kind of device of generating zinc flower on surface of hot galvanizing strip steel coating.

Background technology

As described in the background technology hurdle of the specification sheets of the disclosed a kind of device of controlling strip coating surface zinc floral shape of Chinese utility model patent Granted publication CN2652946Y, in the technology of continuous production small zinc flower hot-dip galvanized steel strip, when galvanized steel when the zinc pot comes out upwards to move, the zinc liquid of belt steel surface cools off gradually, just generates the zinc flower because of crystallization when solidifying.Yet, for the gait of march that makes the band steel after zinc-plated is able to adapt with the color coating operation in road, back, do not adopt naturally cooling usually, steel is low advanced because naturally cooling must make band, thereby can't satisfy the needs of continuous color coating, and then production efficiency is caused restriction.Therefore, usually need be by means of the device of artificial control, the device of alleged here artificial control is the device of control zinc floral shape, its principle be to the zinc coating jet surface water smoke of ot-yet-hardened or steam or zinc powder as the crystalline core, the zinc that the zinc coating surface is formed is spent tiny even causing.As the device of control zinc floral shape is that the core of the device of the generating zinc flower on surface of hot galvanizing strip steel coating said in the above of applicant is undoubtedly humidifier, if the structure of this humidifier of fruit can not be optimized, is difficult to the zinc flower that obtains to be evenly distributed so.

The technical scheme that above-mentioned patent is introduced is to center on moving up and down of humidifier and unfolded, just makes the nozzle of humidifier and the distance between the band steel comply with and need regulate, and is in optimum regime when water smoke is contacted with the strip.The nozzle of aforesaid humidifier has one group and with identical emitted dose water smoke or steam or zinc powder are ejected into the zinc coating surface of band steel usually, considers cost factor, and industry adopts atomized water spray to the strip steel Zn-plating laminar surface usually.

But, the humidifier of prior art can't ensure that the zinc that the strip steel Zn-plating laminar surface is generated spends big or small uniformity, often the zinc that shows central region on the band steel is spent little, and the zinc of areas at both sides is spent greatly, thereby produce rough flaw at belt steel surface, and then cause in later process and can't guarantee during to band steel application surface quality with steel the range of application of belt steel product to be restricted.

Find through the applicant's research, why can occur spending not of uniform size causing with the zinc on both sides with the zinc flower of steel central region, it is the speed of cooling difference of being stranded for the band steel, central region is that the region intermediate speed of cooling is slow, and the areas at both sides speed of cooling is fast, and intercooling speed is slow, and then zinc is spent less, the both sides speed of cooling is fast, and then zinc is spent greatly.Based on this reason,, will certainly produce above-mentioned phenomenon so if with the equivalent water spray.Therefore, be necessary to the hot galvanizing strip steel coating in the prior art to be that the structure of the device of the zinc flower that generates of zinc coating surface is improved.

Summary of the invention

Task of the present invention is that a kind of device that can guarantee to spend with the formed zinc in zinc coating surface of steel generating zinc flower on surface of hot galvanizing strip steel coating of the same size will be provided.

Task of the present invention is finished like this, a kind of device of generating zinc flower on surface of hot galvanizing strip steel coating, it comprises each other presents, the following corresponding gas that is provided with, current case and one group of atomising mechanism, this group atomising mechanism is at described gas, between the current case along gas, the length direction setting of current case and with gas, the current case communicates, described atomising mechanism includes a shower nozzle, the central authorities of shower nozzle constitute spray orifice, spray orifice communicates with the spray tank of shower nozzle, characteristics are: in described one group of atomising mechanism, be positioned at described gas, the diameter ratio of the spray orifice of the shower nozzle central authorities of each at least one atomising mechanism at current case two ends is positioned at described gas, the diameter of the spray orifice of the shower nozzle central authorities of the atomising mechanism at current case middle part is big.

In a specific embodiment of the present invention, described humidifier also comprises air water shunting cap seat, air water shunting cap and shower nozzle locating sleeve, offer the gentle passage of aquaporin in the described air water shunting cap seat, aquaporin communicates with described current case, and the gas passage communicates with described pneumatic box, described air water shunting cap is connected swivel nut constituting one with the matched end of described air water shunting cap seat, constituted on this connection swivel nut and the air water shunting cap seat to be connected the swivel nut chamber matched, offer the prosopyle in the axial central authorities that connect swivel nut, this prosopyle communicates with described aquaporin, and communicate with water jet on being formed in the air water shunting cap, nearly middle part at the air water shunting cap constitutes an air inlet duct, this air inlet duct communicates with described gas passage, and communicate with parichnos on being opened in the air water shunting cap, and parichnos communicates with gas orifice on being opened in the air water shunting cap, described shower nozzle is placed in the nozzle boss chamber of described shower nozzle locating sleeve, and the shower nozzle locating sleeve takes shower nozzle and described air water shunting cap is fixed.

In another specific embodiment of the present invention, the diameter of the spray orifice of the shower nozzle central authorities of described each at least one atomising mechanism that is positioned at described gas, moisture flow case two ends is 0.825～0.925mm, and the diameter of the spray orifice of the shower nozzle central authorities of the described atomising mechanism that is positioned at described gas, moisture flow case middle part is 0.45～0.55mm.

In another specific embodiment of the present invention, the diameter of the spray orifice of the shower nozzle central authorities of described each at least one atomising mechanism that is positioned at described gas, moisture flow case two ends is 0.875mm, and the diameter of the spray orifice of the shower nozzle central authorities of the described atomising mechanism that is positioned at described gas, moisture flow case middle part is 0.5mm.

Go back in the specific embodiment of the present invention, the accent position in described connection swivel nut chamber is provided with and is used for and the described sealing-ring that constitutes sealing between the swivel nut that is connected.

In another specific embodiment of the present invention, top one side of bottom one side of the length direction of described current case and the length direction of pneumatic box respectively is provided with a water retaining cover.

The technical scheme that the present invention recommended is owing to the diameter of the spray orifice of the shower nozzle central authorities that will be arranged at one group of atomising mechanism between gas, the current case is different, the diameter of spray orifice of shower nozzle central authorities of each at least one atomising mechanism that promptly is in gas, moisture flow case two ends is bigger than the diameter of the spray orifice of the shower nozzle central authorities of the atomising mechanism that is positioned at described gas, moisture flow case middle part, therefore, can solve the fast zinc coating surface zinc impregnation disadvantage not of uniform size that causes of band steel intercooling slow both sides cooling, make the zinc of generation spend size to reach unanimity.

Description of drawings

Fig. 1 is the local structure figure of one embodiment of the invention.

Fig. 2 is one-piece construction figure of the present invention.

Fig. 3 is an application examples synoptic diagram of the present invention.

Embodiment

See also Fig. 1 and Fig. 2, from as can be known shown in Figure 2, gas of the present invention, moisture flow case 2,1 be each other join paired, that is to say that current case 1 has a pair of of same structure, pneumatic box 2 also has a pair of of same structure, more particularly, two groups of water, the pneumatic box 1,2 of same structure is arranged, so that to spraying simultaneously by the both sides of the band steel of illustrating among Fig. 25, make the zinc coating surface of band steel 5 both sides generate the zinc flower simultaneously by water and gas phase blended aqueous vapor mist.As described above, owing to be identical at two groups of water shown in Fig. 2, pneumatic box 1,2 and the structure that is disposed at the atomising mechanism 3 between water, the pneumatic box 1,2, so the applicant only describes at wherein one group below.

Pneumatic box 2 is positioned at the top of current case 1, yet if the position of water, pneumatic box 1,2 is exchanged, that is, makes current case 1 be positioned at the top of pneumatic box 2, simultaneously atomising mechanism 3 is turned 180 ° of settings, should be considered as equivalence so.At the length direction of water, pneumatic box 1,2 preferably to arrange one group of atomising mechanism 3 equally spacedly.Please see Fig. 1 by emphasis, in Fig. 1, provided the concrete structure of preferred atomising mechanism 3, each atomising mechanism 3 comprises shower nozzle 31, air water shunting cap seat 32, air water shunting cap 33 and shower nozzle locating sleeve 34, the upper surface of air water shunting cap seat 32 and pneumatic box 2 are fixing, and the lower surface of air water shunting cap seat 32 and current case 1 are fixing, fixed fixed form described here preferably adopts welding, by air water shunting cap seat 32 water, pneumatic box 1,2 is constituted connection.Be processed with an aquaporin 321 and be processed with a gas passage 322 in air water shunting cap seat 32, aquaporin 321 communicates with the case chamber of current case 1, and gas passage 322 communicates with the case chamber of pneumatic box 2.Air water shunting cap 33 is fixing with air water shunting cap seat 32, specifically: constitute one at 33 ends towards air water shunting cap seat 32 of air water shunting cap and connect swivel nut 331, this connection swivel nut 331 is screwed into the connection swivel nut chamber 323 of air water shunting cap seat 32 and implements sealing by means of sealing-ring 3231.Be processed with a prosopyle 3311 in the axial central authorities that connect swivel nut 331, this prosopyle 3311 communicates with aforesaid aquaporin 321, and this prosopyle 3311 also be formed in air water shunting cap 33 on water jet 335 communicate, the water of being introduced by aquaporin 321 3311 is ejected into shower nozzle 31 from water jet 335 through the prosopyle.Constitute an air inlet duct 332 at the nearly middle part of air water shunting cap 33, this air inlet duct 332 communicates with aforesaid gas passage 322, and this air inlet duct 322 also communicates with the parichnos 333 of processing on air water shunting cap 33, and parichnos 333 communicates with gas orifice 334 on the air water shunting cap 33.The spray orifice 311 of shower nozzle 31 communicates with aforesaid gas orifice 334 and water jet 335, is processed with spray tank 312 in the vertical central authorities of shower nozzle 31, on the band steel 5 of aqueous vapor through being ejected into Fig. 2 behind the spray orifice 311 from spray tank 312 and showing.Aforesaid shower nozzle 31 holds to go in the nozzle boss chamber 341 of shower nozzle locating sleeve 34, takes shower nozzle 31 by shower nozzle locating sleeve 34 and is fixed on the air water shunting cap 33.

Technical essential as the present invention program, the length direction of water, pneumatic box 1,2 in one group of atomising mechanism 3 being provided with at interval, the respectively diameter of the spray orifice 311 of the shower nozzle 31 of 1～3 atomising mechanism 3 that the applicant will occupy water, pneumatic box 1,2 two ends is designed to 0.875mm, and the diameter of the spray orifice 311 of the shower nozzle 31 of all atomising mechanisms 3 that promptly are in water, pneumatic box 1,2 central region at all the other positions is designed to 0.5mm.Like this, the amount that is ejected into the aqueous vapor mist on the band steel 5 from the spray orifice 311 of the shower nozzle 31 of one group of atomising mechanism 3 just there are differences, that is, the emitted dose on both sides is greater than the intermediary emitted dose.This mentality of designing can remedy band steel 5 just, and the areas at both sides cooling causes zinc to spend defective not of uniform size soon because of central region is cooled off slowly when (Fig. 2 shows) going out zinc pot 10, and the zinc that makes the zinc coating surface form (generation) spends size to reach unanimity.For the quality of the finished product of hot-dip galvanized steel strip is laid a good foundation.

In the above applicant's notion of having set forth each 1～3 atomising mechanism 3 at water, pneumatic box 1,2 two ends be based on the width of band steel 5 or claim a door width of cloth have wide have narrow, 1.44m, 1.5m, 1.8m and 2m or the like are for example arranged, when the width of band steel 5 is 1.44m and 1.5m, so, only need make the diameter of the respectively spray orifice 311 of the shower nozzle 31 an of atomising mechanism 3 that is in both sides in one group of atomising mechanism 3 bigger than other; And when the width of band steel 5 is 1.8m, then the diameter of the spray orifice 311 of the shower nozzle 31 of each two atomising mechanism 3 that is in both sides in one group of atomising mechanism 3 is bigger than other, with should be 2m with the width of steel 5 time, then the diameter of the spray orifice 311 of the shower nozzle 31 of each three atomising mechanism 3 that is in both sides in one group of atomising mechanism 3 is bigger than other.

Please see Fig. 2 by emphasis, receive first interface 11, the water inlet pipe 111 that on first interface 11, continues, the case chamber of water being introduced current case 1 by water inlet pipe 111 at a side or the title afterbody of current case 1; A side or title afterbody at pneumatic box 2 have been received second interface 21, the inlet pipe 211 that continues, the case chamber of gas being introduced pneumatic box 2 by inlet pipe 211 on second interface 21.In addition, in order to ensure the parallelism between water, the pneumatic box 1,2, between the afterbody of water, pneumatic box 1,2, be equipped with back-up block 6, receive fixedly ear 12 and be and be used for that current case 1 is taken atomising mechanism 3 and pneumatic box 1 is installed on by frame shown in Figure 37 at current case 1 two ends.Again, below a side of the length direction of current case 1, promptly be fixed with water retaining cover 4, similarly, above a side of the length direction of pneumatic box 1, promptly be installed with water retaining cover 4 towards a side of band steel 5 towards a side of band steel 5 by what illustrate among Fig. 2.

Ask for an interview Fig. 3 and still in conjunction with Fig. 1 and Fig. 2, by shown in Figure 3, water inlet pipe 111 connects with the supply mains 9 that first tensimeter 91 is installed, and inlet pipe 211 connects with the gas house steward 8 that second tensimeter 81 is installed.Enter in zinc pot 10 that fills the zinc liquid that is melted and the process that makes progress out at band steel 5, introduce water and gas to current case 1 and pneumatic box 2 respectively by supply mains 9 and gas house steward 8, the water that enters into the case chamber of current case 1 is drawn from water jet 335 prosopyle 3311 on the connection swivel nut 331 of the aquaporin 321 on the air water shunting cap seat 32, air water shunting cap 33 successively; Simultaneously, the gas that enters into the case chamber of pneumatic box 2 is drawn from gas orifice 334 through the gas passage 322 on the air water shunting cap seat 32, the air inlet duct 332 on the air water shunting cap 33, parichnos 333 successively.The water of drawing from water jet 335 enters the spray orifice 311 of shower nozzle 31, simultaneously, enter the spray orifice 311 of shower nozzle 31 from the gas of gas orifice 334 ejection, thereby be ejected into the zinc coating surface of the band steel 5 that is in travel condition by spray tank 312 with the water smoke shape, it is colored to make the zinc coating surface form zinc in process of cooling.Because being positioned at the diameter of spray orifice 311 of shower nozzle 31 of each two atomising mechanism 3 of two-end part of the length direction of water, pneumatic box 1,2 is 0.875mm, and the diameter of spray orifice 311 of shower nozzle 31 of all atomising mechanisms 3 of central region that is positioned at the length direction of water, pneumatic box 1,2 is 0.5mm, therefore, the spray amount that the zinc coating surface of band steel 5 is obtained is different, promptly the spray amount that obtains with steel 5 both sides is greater than the spray amount that the centre obtained, and the zinc that makes the zinc coating surface of view picture band steel 5 form (generation) is spent big or small uniformity.Because as described above, the 5 both sides cooling of band steel is fast, and intercooling speed is slow, has increased the crystallization nuclei on the zinc coating surface on band steel 5 both sides by the emitted dose that strengthens both sides.

Claims

1, a kind of device of generating zinc flower on surface of hot galvanizing strip steel coating, it comprises each other presents, the following corresponding gas that is provided with, current case (2,1) and one group of atomising mechanism (3), this group atomising mechanism (3) is at described gas, current case (2,1) between along gas, current case (2,1) length direction setting and with gas, current case (2,1) communicates, described atomising mechanism (3) includes a shower nozzle (31), the central authorities of shower nozzle (31) constitute spray orifice (311), spray orifice (311) communicates with the spray tank (312) of shower nozzle (31), it is characterized in that: in described one group of atomising mechanism (3), be positioned at described gas, current case (2,1) the diameter ratio of the spray orifice (311) of shower nozzle (31) central authorities of each at least one atomising mechanism (3) at two ends is positioned at described gas, current case (2,1) diameter of the spray orifice (311) of the shower nozzle (31) of Zhong Bu atomising mechanism (3) central authorities is big.

2, the device of generating zinc flower on surface of hot galvanizing strip steel coating according to claim 1, it is characterized in that described humidifier (3) also comprises air water shunting cap seat (32), air water shunting cap (33) and shower nozzle locating sleeve (34), offer the gentle passage of aquaporin (321) (322) in the described air water shunting cap seat (32), aquaporin (321) communicates with described current case (1), and gas passage (322) communicates with described pneumatic box (2), described air water shunting cap (33) is connected swivel nut (331) constituting one with the matched end of described air water shunting cap seat (32), constituted on this connection swivel nut (331) and the air water shunting cap seat (32) to be connected swivel nut chamber (323) matched, offer prosopyle (3311) in the axial central authorities that connect swivel nut (331), this prosopyle (3311) communicates with described aquaporin (321), and communicate with water jet (335) on being formed in air water shunting cap (33), constitute an air inlet duct (332) at the nearly middle part of air water shunting cap (33), this air inlet duct (332) communicates with described gas passage (322), and communicate with parichnos (333) on being opened in air water shunting cap (33), and parichnos (333) communicates with gas orifice (334) on being opened in air water shunting cap (33), described shower nozzle (31) is placed in the nozzle boss chamber (341) of described shower nozzle locating sleeve (34), and it is fixing with described air water shunting cap (33) that shower nozzle locating sleeve (34) is taken shower nozzle (31).

3, the device of generating zinc flower on surface of hot galvanizing strip steel coating according to claim 1, the diameter of spray orifice (311) that it is characterized in that shower nozzle (31) central authorities of described each at least one atomising mechanism (3) that is positioned at described gas, moisture flow case (2,1) two ends is 0.825～0.925mm, and the diameter of the spray orifice (311) of shower nozzle (31) central authorities of the described atomising mechanism (3) that is positioned at described gas, moisture flow case (2,1) middle part is 0.45～0.55mm.

4, the device of generating zinc flower on surface of hot galvanizing strip steel coating according to claim 1, the diameter of spray orifice (311) that it is characterized in that the shower nozzle central authorities of described each at least one atomising mechanism (3) that is positioned at described gas, moisture flow case (2,1) two ends is 0.875mm, and the diameter of the spray orifice (311) of shower nozzle (31) central authorities of the described atomising mechanism (3) that is positioned at described gas, moisture flow case (2,1) middle part is 0.5mm.

5, the device of generating zinc flower on surface of hot galvanizing strip steel coating according to claim 2, the accent position that it is characterized in that described connection swivel nut chamber (323) are provided with and are used for and the described sealing-ring (3231) that constitutes sealing between the swivel nut (331) that is connected.

6, the device of generating zinc flower on surface of hot galvanizing strip steel coating according to claim 1 is characterized in that top one side of the length direction of bottom one side of length direction of described current case (1) and pneumatic box (2) respectively is provided with a water retaining cover (4).