Surface passivation device for galvanized pipe production

Abstract

The application provides a surface passivation device for galvanized pipe production, an adjusting assembly is installed on the upper box body, and a spraying assembly and an air shower assembly are arranged on the adjusting assembly respectively, a mist suction cover is installed on the upper end of the upper box body, and a passivation liquid filtering assembly is arranged on the lower end of the upper box body. The surface passivation device for galvanized pipe production detects the presence of the galvanized pipe by using the detection switch, so that the spraying and air shower operations are started, the passivation liquid can be sprayed to the surface of the galvanized pipe through the spraying assembly, the excess passivation liquid on the surface of the galvanized pipe is removed by air blowing through the air shower assembly, in the process of air showering and spraying, the passivation liquid is atomized, in order to prevent the passivation liquid from being vaporized and diffused to the surrounding environment and affecting the working environment, the vaporized passivation liquid is sucked and removed through the mist suction cover, and the passivation liquid filtering assembly is arranged below the upper box body, so that the passivation liquid sprayed to the periphery of the galvanized pipe is filtered in time, and is used again, the utilization rate and efficiency of the material are increased, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of metal passivation, in particular to a surface passivation device for galvanized pipe production. BACKGROUND

[0002] In the modern industrial field, galvanized steel pipe as a key basic material is widely used in petroleum chemical industry, building structure and mechanical manufacturing and many other industries. In order to effectively improve the corrosion resistance of galvanized steel pipe, passivation treatment has become an indispensable surface treatment process in the industry. Passivation refers to driving the surface layer metal atoms of the steel pipe to react with the specific passivation agent by chemical method, and then forming a dense, stable and strong adhesion passivation film to isolate the external corrosive medium and protect the steel pipe substrate.

[0003] In the prior art, the passivation of galvanized steel pipe usually adopts immersion or spraying. The spraying type passivation is to place the steel pipe under the spray head, spray the passivation liquid, and complete the full spraying of the surface of the steel pipe. After spraying is completed, the residual passivation liquid on the surface of the steel pipe needs to be cleaned. In the prior art, the residual passivation liquid is basically discarded, which not only increases the environmental protection pressure, but also causes waste of materials and increases the production cost. SUMMARY

[0004] Therefore, the present application aims to provide a surface passivation device for galvanized pipe production to solve the problems of low utilization efficiency of passivation liquid material and high cost in the passivation process of the prior art galvanized steel pipe.

[0005] To achieve the above purpose, the technical scheme of the present application is as follows:

[0006] A surface passivation device for galvanized pipe production, comprising an upper box body, a mist suction hood, a spraying assembly, an air shower assembly and an adjusting assembly, the upper box body is installed on a rack, a plurality of supporting rollers are arranged inside the upper box body along the moving direction of the galvanized pipe, the adjusting assembly is installed on the upper box body, and the spraying assembly and the air shower assembly are respectively arranged on the adjusting assembly, the mist suction hood is installed on the upper end of the upper box body, a liquid inlet pipe and an air inlet pipe are arranged on the mist suction hood, the liquid inlet pipe is connected with the spraying assembly, one end of the air inlet pipe is connected with the air shower assembly, and the other end of the air inlet pipe is connected with an external air injection device, a feeding pipe and a discharging pipe are respectively arranged on the two sides of the upper box body, a galvanized pipe detection switch is arranged on the feeding pipe, a passivation liquid filtering assembly is arranged at the lower end of the upper box body, and the passivation liquid filtering device is connected with a storage tank, and one end of the storage tank is connected with the liquid inlet pipe.

[0007] Further, the feeding pipe and the discharging pipe are hollow circular truncated cone structures, a plurality of supporting rollers are arranged in parallel to each other, the periphery of each supporting roller is rolling connected to the periphery of the galvanized pipe, and the periphery of the supporting roller is provided with a supporting ring groove with an arc-shaped cross section, the periphery of the galvanized pipe is in contact with the bottom of the supporting ring groove, and the periphery of the galvanized pipe does not contact the inner side walls of the feeding pipe and the discharging pipe.

[0008] Further, the middle part of the supporting roller is fixedly sleeved with a middle shaft, and a sealing bearing is arranged between the periphery of the middle shaft and the side wall of the upper box body.

[0009] Further, the detection switch is a photoelectric sensor, the photoelectric sensor is mounted to the inner side wall of the feeding pipe, and the photoelectric sensor is used to detect the presence of the galvanized pipe.

[0010] Further, a plurality of spraying assemblies are arranged in the upper box body along the running direction of the galvanized pipe, and a wind spraying assembly is arranged at the rear section of each spraying assembly, each spraying assembly and wind spraying assembly are mounted to an adjusting assembly, the adjusting assembly comprises a first supporting rod and a second supporting rod, the first supporting rod and the second supporting rod are arranged perpendicularly to each other, the middle part of the second supporting rod is fixedly connected to the middle part of the first supporting rod, two threaded holes are arranged at the two ends of the first supporting rod, respectively, a adjusting bolt is threadedly connected in each threaded hole, a first supporting plate is fixedly mounted at each side of the upper box body, one end of the adjusting bolt can abut against the upper end of the first supporting plate, and the spraying assembly and the wind spraying assembly are mounted to the second supporting rod.

[0011] Further, the spraying assembly comprises a first pipe body, a first nozzle is arranged at the lower end of the first pipe body, the upper end of the first pipe body is connected to a liquid inlet pipe, and the periphery of the first pipe body is fixedly mounted to the second supporting rod.

[0012] Further, a distribution box is arranged at the lower end of the first pipe body, two first nozzles are arranged at the lower end of the distribution box, each first nozzle is arranged at an angle with the lower end of the distribution box, the two first nozzles are oppositely arranged, and the discharging end of each first nozzle faces the periphery of the galvanized pipe.

[0013] Further, the wind spraying assembly comprises a second pipe body, the lower end of the second pipe body is connected to a wind ring, the wind ring is located at the periphery of the galvanized pipe, a plurality of air holes are arranged in the circumferential direction of the inner ring of the wind ring, a second nozzle is mounted in each air hole, the outlet end of the second nozzle faces the periphery of the galvanized pipe, the upper end of the second pipe body is connected to an air inlet pipe, and the periphery of the second pipe body is slidingly connected to the second supporting rod.

[0014] Further, a first sliding hole is arranged on the second supporting rod, a locking bolt is threadedly connected to the second supporting rod, the periphery of the second pipe body is slidingly connected into the first sliding hole, and one end of the locking bolt can abut against the periphery of the second pipe body.

[0015] Further, the lower end of the mist suction hood is connected to the upper end of the upper box body, and the mist suction hood is in an inverted funnel structure, the upper end of the mist suction hood is provided with an exhaust pipe, the inlet end of the exhaust pipe is provided with a first mist catcher, a vacuum pump is arranged on the exhaust pipe, and the outlet end of the exhaust pipe is connected to an external waste gas collection tank.

[0016] Further, the passivation liquid filtering assembly comprises a lower box body and a collection hood, the collection hood is in a funnel structure, the upper end of the collection hood is fixedly connected to the lower end of the upper box body, the lower end of the collection hood is fixedly connected to the upper end of the lower box body through a transition plate, the transition plate is in a U-shaped structure, and the open end of the transition plate is capable of being inserted with a sieve plate, the sieve plate is capable of covering the open end of the lower box body, a third pipe body is arranged on the side wall of the lower box body, and the third pipe body is connected to a storage tank.

[0017] Further, the sieve plate is uniformly provided with sieve holes, the two sides of one end of the sieve plate are respectively provided with bosses, the other end of the sieve plate is provided with a blocking plate, the two sides of the lower box body are respectively provided with guide grooves, the periphery of each boss is slidably connected to one of the guide grooves, and the relative positions of the sieve plate and the lower box body are positioned, and one side of the blocking plate is capable of abutting and blocking the open end of the transition plate.

[0018] Further, a first sieve flow plate is arranged in the lower box body, the first sieve flow plate is located below the sieve plate, one end and the two sides of the first sieve flow plate are fixedly connected to the side wall of the lower box body, a first gap is arranged between the other end of the first sieve flow plate and the side wall of the box body, and a permanent magnet is arranged in the first gap, and the permanent magnet is arranged on the lower box body or the first sieve flow plate.

[0019] Further, the first sieve flow plate is provided with a first slope, and a plurality of blocking groove plates are arranged on the first sieve flow plate, the plurality of blocking groove plates are uniformly distributed along the first slope, and each blocking groove plate is in an inverted L-shaped structure.

[0020] Further, the first and second buffer plates are arranged in the lower box body, the first and second buffer plates are arranged in parallel with each other, the two sides of the first and second buffer plates are fixedly connected to the two inner walls of the lower box body, the lower end of the first buffer plate is fixedly connected to the bottom of the lower box body, a second gap is arranged between the upper end of the first buffer plate and the first sieve flow plate, the first buffer plate is located between the first gap and the second buffer plate, the upper end of the second buffer plate abuts against the lower end of the first sieve flow plate, and a third gap is arranged between the lower end of the second buffer plate and the bottom of the lower box body.

[0021] Further, the second sieve flow plate is arranged on one side of the second buffer plate, the first buffer plate is arranged on the other side of the second buffer plate, one end and the two sides of the second sieve flow plate are fixedly connected to the bottom of the lower box body, and the end of the second sieve flow plate close to the second buffer plate is provided with an overflow gap, and the first gap is connected in sequence through the second gap, the third gap and the overflow gap.

[0022] Further, the second sieve flow plate is located below the first sieve flow plate, and a second slope is arranged on the second sieve flow plate, the first slope and the second slope are oppositely arranged, sieve flow grooves are uniformly arranged on the second sieve flow plate along the second slope, and the third pipe body is located at one end of the second sieve flow plate away from the second buffer plate.

[0023] Further, the lower box body is further provided with a flow leakage assembly, the flow leakage assembly comprises a fourth pipe body, the fourth pipe body is an L-shaped structure, the periphery of the fourth pipe body is fixedly installed to the lower box body, one end of the fourth pipe body is communicated to the storage tank, and a floating head is arranged at the other end of the fourth pipe body.

[0024] Further, the storage tank comprises a tank body and a transverse plate, the transverse plate is arranged at the middle of the tank body, the transverse plate divides the tank body into an upper storage cavity and a lower storage cavity, a second through hole is arranged at the middle of the transverse plate, and a sixth pipe body is arranged in the second through hole.

[0025] Further, a third through hole is arranged on the transverse plate, a tenth pipe body is arranged in the third through hole, and the tenth pipe body is located in the upper storage cavity and the upper end of the tenth pipe body is provided with a second mist eliminator.

[0026] Further, a filler pipe is arranged at the upper end of the tank body, and the filler pipe is communicated to the upper storage cavity.

[0027] Further, a liquid level meter is arranged on the side wall of the tank body, and the liquid level meter is used for observing the liquid level in the upper storage cavity.

[0028] Compared with the prior art, the surface passivation device for galvanized pipe production has the following beneficial effects:

[0029] (1) The surface passivation device for galvanized pipe production detects the presence of the galvanized pipe by using the detection switch, so as to start the spraying and air shower operation, the spraying assembly can spray the passivation liquid to the surface of the galvanized pipe, and the air shower assembly can blow and remove the excess passivation liquid on the surface of the galvanized pipe, so as to complete the passivation of the surface of the galvanized pipe.

[0030] In the spraying and air showering process, the passivation liquid is atomized, in order to prevent the passivation liquid from evaporating and diffusing to the surrounding, affecting the working environment, the atomized passivation liquid is sucked by the mist suction cover, and a passivation liquid filtering assembly is arranged below the upper box body, so that the passivation liquid sprayed to the periphery of the galvanized pipe is filtered in time, and is used again, so that the utilization rate and efficiency of the material are increased, and the cost is saved.

[0031] (2) The surface passivation device for galvanized pipe production, the small-diameter end of the feeding pipe and the discharging pipe away from the upper box body is a small-diameter end, so that the feeding pipe and the discharging pipe are in a closed structure relative to the upper box body, liquid droplets generated during spraying and air showering can be effectively intercepted through the closed structure, so as to prevent material loss caused by the overflow of the passivation liquid and prevent pollution of the working environment.

[0032] (3) The surface passivation device for galvanized pipe production, the periphery of the galvanized pipe is first sprayed with passivation liquid by the spraying assembly, and then passes through the air showering assembly, and the air knife scrapes off the excess passivation liquid on the surface of the galvanized pipe, the spraying assembly and the air showering assembly are both installed on the adjusting assembly, and the height of the spraying assembly and the air showering assembly relative to the upper box body can be adjusted at the same time through the adjusting assembly, so that the relative positions of the spraying assembly and the air showering assembly can be adjusted in time and quickly when the galvanized pipe is changed.

[0033] (4) The surface passivation device for galvanized pipe production, the first sliding hole is arranged on the second supporting rod, and the locking bolt is threadedly connected to the second supporting rod, the periphery of the second pipe body is slidingly connected into the first sliding hole, and one end of the locking bolt can abut against the periphery of the second pipe body, so that the relative positions of the second pipe body and the second supporting rod can be adjusted, that is, the relative positions of the second nozzle and the first nozzle on the air ring can be adjusted, so as to meet the use requirements of different working conditions.

[0034] (5) The surface passivation device for galvanized pipe production, the large particle zinc nodules or zinc blocks can be intercepted through the sieve plate, so as to prevent the zinc nodules or zinc blocks from causing blockage of the passivation liquid conveying pipeline or damage to the conveying equipment, and the material interception can effectively screen, and the inverted L-shaped structure blocking groove plate is used for intercepting small particle pollutants in the passivation liquid, and the purpose of auxiliary screening of the sieve plate is achieved.

[0035] (6) The surface passivation device for galvanized pipe production, the passivation liquid flows into the upper side of the first sieve flow plate through the sieve plate, and then flows into the first gap through the first slope, the flow rate of the passivation liquid can be relieved through the first slow flow plate and the second slow flow plate, so that the passivation liquid can be slowly injected into the second slope, and then the powdery and flocculent pollutants are retained in the sieve flow groove on the second slope, so as to improve the cleanliness of the passivation liquid. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate the preferred embodiments of the application and assist in

[0037] Figure 1 Structure diagram of surface passivation device for galvanized pipe production according to an embodiment of the present application;

[0038] Figure 2 Structure diagram of upper box body with adjustment assembly mounted thereon according to an embodiment of the present application;

[0039] Figure 3 Structure diagram of cooperation of spray assembly, air shower assembly and adjustment assembly according to an embodiment of the present application;

[0040] Figure 4 Structure diagram of spray assembly according to an embodiment of the present application;

[0041] Figure 5 Structure diagram of inside of upper box body according to an embodiment of the present application;

[0042] Figure 6 Sectional view diagram of upper box body according to an embodiment of the present application;

[0043] Figure 7 Structure diagram of mist suction cover according to an embodiment of the present application;

[0044] Figure 8 Structure diagram of passivation liquid filtering assembly according to an embodiment of the present application;

[0045] Figure 9 Structure diagram of cooperation of collection cover and transition plate according to an embodiment of the present application;

[0046] Figure 10 Structure diagram of sieve plate according to an embodiment of the present application;

[0047] Figure 11 Structure diagram of lower box body according to an embodiment of the present application;

[0048] Figure 12 Structure diagram of lower box body with transition plate and collection cover mounted thereon according to an embodiment of the present application;

[0049] Figure 13 Sectional view diagram of inside of lower box body according to an embodiment of the present application;

[0050] Figure 14 Structure diagram of first sieve flow plate and lower part assembly thereof according to an embodiment of the present application;

[0051] Figure 15This is a schematic diagram of the structure inside the lower box according to an embodiment of the present invention;

[0052] Figure 16 This is a schematic structural diagram of a flow discharge assembly according to an embodiment of the present invention;

[0053] Figure 17 is a cross-sectional schematic diagram of a flow discharge assembly according to an embodiment of the present invention;

[0054] Figure 18 This is a schematic structural diagram of a storage tank according to an embodiment of the present invention;

[0055] Figure 19 This is a schematic cross-sectional view of a storage tank according to an embodiment of the present invention.

[0056] Description of reference numerals:

[0057] 1-Upper box; 11-Feed pipe; 12-Discharge pipe; 13-Support roller; 14-First support plate; 2-Mist hood; 21-Liquid inlet pipe; 22-Air inlet pipe; 23-Exhaust pipe; 3-Spray assembly; 31-First pipe body; 32-First nozzle; 33-Distribution box; 4-Air shower assembly; 41-Second pipe body; 42-Air ring; 43-Locking bolt; 5-Adjustment assembly; 51-First support rod; 52-Second support rod; 53-Adjustment bolt; 6-Detection switch; 7-Passivation liquid filter assembly; 71-Lower box; 711-Guide groove; 72-Collection cover; 73-Transition plate; 74-Sieve plate; 75-Third pipe body; 76-Boss; 77-Block Baffle; 78-first sieve plate; 79-permanent magnet; 710-blocking slot plate; 714-first slow flow plate; 712-second slow flow plate; 713-second sieve plate; 7131-filter gap; 7132-sieve trough; 8-storage tank; 81-tank body; 82-cross-plate; 83-upper storage chamber; 84-lower storage chamber; 85-sixth pipe body; 86-seventh pipe body; 87-eighth pipe body; 88-ninth pipe body; 89-tenth pipe body; 810-second mist collector; 811-stuffing pipe; 812-observable liquid level gauge; 9-leakage assembly; 91-fourth pipe body; 92-floating head; 93-fifth pipe body; 94-pipe sleeve; 95-retaining ring. DETAILED DESCRIPTION

[0058] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0059] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated thereby. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0060] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0061] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0062] As Figures 1-19As shown, the surface passivation device for galvanized pipe production includes an upper box body 1, a mist suction hood 2, a spraying assembly 3, an air shower assembly 4 and an adjusting assembly 5. The upper box body 1 is installed on a rack. After the galvanized pipe is completed, the surface of the galvanized pipe needs to be passivated. The galvanized pipe is conveyed in the axial direction on a conveying roller. A plurality of supporting rollers 13 are arranged inside the upper box body 1 along the moving direction of the galvanized pipe. The adjusting assembly 5 is installed on the upper box body 1, and the spraying assembly 3 and the air shower assembly 4 are respectively arranged on the adjusting assembly 5. The mist suction hood 2 is installed on the upper end of the upper box body 1. The mist suction hood 2 is provided with a liquid inlet pipe 21 and an air inlet pipe 22. The liquid inlet pipe 21 is connected to the spraying assembly 3. One end of the air inlet pipe 22 is connected to the air shower assembly 4, and the other end of the air inlet pipe 22 is connected to an external air injection device. The upper box body 1 is provided with a feeding pipe 11 and a discharging pipe 12 on both sides. The galvanized pipe detection switch 6 is arranged on the feeding pipe 11. The passivation liquid filtering assembly 7 is arranged at the lower end of the upper box body 1, and the passivation liquid filtering assembly is connected to a storage tank 8. One end of the storage tank 8 is connected to the liquid inlet pipe 21. The detection switch 6 is used to detect the presence of the galvanized pipe, so as to start the spraying and air shower operation. The passivation liquid can be sprayed to the surface of the galvanized pipe through the spraying assembly 3. The excess passivation liquid on the surface of the galvanized pipe is blown and scraped off through the air shower assembly 4, so as to complete the passivation of the surface of the galvanized pipe. During the spraying and air shower process, the passivation liquid is gasified and atomized. In order to prevent the passivation liquid from vaporizing and diffusing to the surrounding environment and affecting the working environment, the vaporized passivation liquid is sucked and removed through the mist suction hood 2. The passivation liquid filtering assembly 7 is arranged below the upper box body 1, so as to filter the passivation liquid sprayed to the periphery of the galvanized pipe in time, and the passivation liquid is reused, thereby increasing the utilization rate and efficiency of the material and saving the cost.

[0063] The feeding pipe 11 and the discharging pipe 12 are hollow circular table structures. The ends of the feeding pipe 11 and the discharging pipe 12 away from the upper box body 1 are small-diameter ends. The plurality of supporting rollers 13 are arranged parallel to each other. The periphery of each supporting roller 13 is rollingly connected to the periphery of the galvanized pipe. The periphery of the supporting roller 13 is provided with a supporting ring groove with an arc-shaped cross section. The periphery of the galvanized pipe contacts the bottom of the supporting ring groove. The periphery of the galvanized pipe does not contact the inner side walls of the feeding pipe 11 and the discharging pipe 12. The ends of the feeding pipe 11 and the discharging pipe 12 away from the upper box body 1 are small-diameter ends, so that the feeding pipe 11 and the discharging pipe 12 are closed-end structures relative to the upper box body 1. The liquid droplets generated during the spraying and air shower operation can be effectively intercepted through the closed-end structure, so as to prevent the passivation liquid from overflowing and causing material loss, and to prevent the working environment from being polluted. In order to prevent the passivation liquid from flowing out between the supporting roller 13 and the upper box body 1, the middle part of the supporting roller 13 is fixedly sleeved with a middle shaft. The periphery of the middle shaft is provided with a sealing bearing between the side wall of the upper box body 1.

[0064] The detection switch 6 is a photoelectric sensor in the prior art, which is arranged in a hole in the side wall of the feeding pipe 11 and is sleeved with a thin steel pipe. The execution end of the photoelectric sensor can irradiate into the feeding pipe 11. When the galvanized pipe passes through the feeding pipe 11, the presence of the galvanized pipe is detected by the photoelectric sensor, and the detection switch 6 is signal-connected to the controller. The control mode of the embodiment is controlled by the controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The power supply also belongs to the common knowledge in the art. The control mode and circuit connection are not explained in detail in this paper.

[0065] A plurality of spray assemblies 3 are arranged in the upper box body 1 along the direction of the galvanized pipe, and a wind spray assembly 4 is arranged at the rear of each spray assembly 3. In the implementation, the periphery of the galvanized pipe is first sprayed with passivation liquid by the spray assembly 3, and then passes through the wind spray assembly 4, and the air knife removes the excess passivation liquid on the surface of the galvanized pipe. Each spray assembly 3 and wind spray assembly 4 are installed on the adjusting assembly 5, and the height of the spray assembly 3 and the wind spray assembly 4 relative to the upper box body 1 can be adjusted at the same time by the adjusting assembly 5, so that the relative positions of the spray assembly 3 and the wind spray assembly 4 can be adjusted in time and quickly when the galvanized pipe is changed. The adjusting assembly 5 includes a first supporting rod 51 and a second supporting rod 52, which are arranged perpendicular to each other. The middle part of the second supporting rod 52 is fixedly connected with the middle part of the first supporting rod 51. Threaded holes are arranged at both ends of the first supporting rod 51. An adjusting bolt 53 is threadedly connected in each threaded hole. A first supporting plate 14 is fixedly installed on each side of the upper box body 1. One end of the adjusting bolt 53 can abut against the upper end of the first supporting plate 14. The spray assembly 3 and the wind spray assembly 4 are installed on the second supporting rod 52. The relative positions of the first supporting rod 51 and the second supporting rod 52 are fixed, and the relative positions of the first supporting plate 14 and the upper box body 1 are fixed. The relative positions of the first supporting rod 51 and the first supporting plate 14 can be adjusted by the adjusting bolt 53. The galvanized pipe is arranged on the supporting roller 13. The relative positions of the wind spray assembly 4 and the spray assembly 3 relative to the galvanized pipe can be adjusted by adjusting the relative positions of the first supporting plate 14 and the first supporting rod 51, so as to meet different use conditions.

[0066] The spray assembly 3 includes a first pipe body 31. A first nozzle 32 is arranged at the lower end of the first pipe body 31. The upper end of the first pipe body 31 is connected to the liquid inlet pipe 21. The first pipe body 31 is fixedly installed on the second supporting rod 52. Figure 4As shown, the lower end of the first pipe body 31 is provided with a distribution box 33, and the lower end of the distribution box 33 is provided with two first spray heads 32, each of which is provided with an angle at the lower end of the distribution box 33. The two first spray heads 32 are oppositely arranged, and the discharge end of each first spray head 32 faces the periphery of the galvanized pipe. Through the multiple spray heads, multi-angle spraying operation can be performed on the periphery of the galvanized pipe, thereby improving the passivation efficiency. The air shower assembly 4 includes a second pipe body 41, the lower end of the second pipe body 41 is connected to an air ring 42, and the air ring 42 is located at the periphery of the galvanized pipe. The inner ring of the air ring 42 is provided with a plurality of air holes in the circumferential direction, and a second spray head is installed in each air hole. The outlet end of the second spray head faces the periphery of the galvanized pipe. The upper end of the second pipe body 41 is connected to the air inlet pipe 22, and the periphery of the second pipe body 41 is slidingly connected to the second supporting rod 52.

[0067] As shown in the drawings, Figure 3 The second supporting rod 52 is provided with a first sliding hole, and a locking bolt 43 is threadedly connected to the second supporting rod 52. The periphery of the second pipe body 41 is slidingly connected to the first sliding hole, and one end of the locking bolt 43 can abut against the periphery of the second pipe body 41. By adjusting the relative position of the second pipe body 41 and the second supporting rod 52 through the locking bolt 43, the initial relative position of the second spray head on the air ring 42 and the first spray head 32 can be adjusted to meet the use requirements of different working conditions.

[0068] The lower end of the mist suction hood 2 is connected to the upper end of the upper box body 1, and the mist suction hood 2 is in the form of an inverted funnel. The upper end of the mist suction hood 2 is provided with an exhaust pipe 23, the inlet end of the exhaust pipe 23 is provided with a first mist catcher, and the exhaust pipe 23 is provided with a vacuum pump. The outlet end of the exhaust pipe 23 is connected to an external waste gas collection tank. The first mist catcher is a filter cotton of the prior art. When the mist passes through the filter cotton, the vaporization beads will be left on the filter cotton, and will drop back into the upper box body 1 as the vaporization beads accumulate.

[0069] The passivation liquid filtering assembly 7 comprises a lower box 71 and a collecting cover 72, the collecting cover 72 is a funnel type structure, the upper end of the collecting cover 72 is installed to the lower end of the upper box 1, the lower end of the collecting cover 72 is fixedly installed to the upper end of the lower box 71 through a transition plate 73, the transition plate 73 is a U type structure, and the open end of the transition plate 73 can be inserted with a sieve plate 74, the sieve plate 74 can cover the open end of the lower box 71, a third pipe body 75 is installed to the side wall of the lower box 71, the third pipe body 75 is connected to the storage tank 8, the sieve plate 74 is uniformly distributed with sieve holes, the one end of the sieve plate 74 is provided with a boss 76 on both sides, respectively, the other end of the sieve plate 74 is installed with a blocking plate 77, the two sides of the lower box 71 are provided with a guide groove 711, respectively, each boss 76 is slidingly connected to one guide groove 711 outside, for positioning the relative position of the sieve plate 74 and the lower box 71, and one side of the blocking plate 77 can abut and block the open end of the transition plate 73, when the passivation liquid and the air ring 42 work on the periphery of the galvanized pipe, the large particles attached to the galvanized pipe will be washed down, the zinc nodules or zinc blocks of the large particles can be intercepted through the sieve plate 74, so as to prevent the zinc nodules or zinc blocks from causing the blockage of the passivation liquid conveying pipeline or causing the damage of the conveying equipment, and the material interception can effectively screen.

[0070] A first sieve flow plate 78 is installed in the lower box 71, the first sieve flow plate 78 is located below the sieve plate 74, one end and both sides of the first sieve flow plate 78 are fixedly connected to the side wall of the lower box 71, a first gap is arranged between the other end of the first sieve flow plate 78 and the side wall of the box, and a permanent magnet 79 is arranged in the first gap, the permanent magnet 79 is installed to the lower box 71 or the first sieve flow plate 78, and the permanent magnet 79 is used for adsorbing iron filings, the permanent magnet 79 of the embodiment is detachably installed on the first sieve flow plate 78, the permanent magnet 79 is an optional component, and installation can also be omitted in implementation, the first sieve flow plate 78 is provided with a first slope, and a plurality of blocking groove plates 710 are installed on the first sieve flow plate 78, the plurality of blocking groove plates 710 are uniformly distributed along the first slope, and each blocking groove plate 710 is a reverse L type structure, the blocking groove plate is used for intercepting small particle pollutants in the passivation liquid, and the purpose of auxiliary screening of the sieve plate 74 is achieved.

[0071] The first slow flow plate 714 and the second slow flow plate 712 are arranged in the lower box body 71, the first slow flow plate 714 and the second slow flow plate 712 are arranged in parallel, the two sides of the first slow flow plate 714 and the second slow flow plate 712 are fixedly connected to the inner walls of the two sides of the lower box body 71, the lower end of the first slow flow plate 714 is fixedly connected to the bottom of the lower box body 71, the upper end of the first slow flow plate 714 and the first sieve flow plate 78 are provided with a second gap, the first slow flow plate 714 is located between the first gap and the second slow flow plate 712, the upper end of the second slow flow plate 712 abuts against the lower end of the first sieve flow plate 78, the lower end of the second slow flow plate 712 and the bottom of the lower box body 71 are provided with a third gap, one side of the second slow flow plate 712 is provided with the second sieve flow plate 713, the other side of the first slow flow plate 714 is located, one end and two sides of the second sieve flow plate 713 are fixedly connected to the bottom of the lower box body 71, and one end of the second sieve flow plate 713 close to the second slow flow plate 712 is provided with a flow gap, the first gap is connected in sequence through the second gap, the third gap and the flow gap, the second sieve flow plate 713 is located below the first sieve flow plate 78, the second sieve flow plate 713 is provided with a second slope, the first slope and the second slope are arranged opposite to each other, the sieve flow grooves 7132 are uniformly distributed on the second sieve flow plate 713 along the second slope, and the third pipe body 75 is located at one end of the second sieve flow plate 713 away from the second slow flow plate 712, the passivation liquid flows into the upper of the first sieve flow plate 78 through the sieve plate 74, and then flows into the first gap through the first slope, the flow rate of the passivation liquid can be relieved through the first slow flow plate 714 and the second slow flow plate 712, so that the passivation liquid can slowly flow into the second slope, and then the powdery and flocculent pollutants are retained in the sieve flow grooves 7132 on the second slope, so as to improve the cleanliness of the passivation liquid.

[0072] The lower box 71 is also provided with a liquid leakage assembly 9, which comprises a fourth pipe body 91 in L-shaped structure, and the fourth pipe body 91 is fixedly installed on the periphery of the lower box 71, the first end of the fourth pipe body 91 is communicated with the storage tank 8, the second end of the fourth pipe body 91 is provided with a floating head 92, the floating head 92 can float in the passivation liquid, and the middle part of the floating head 92 is provided with a first through hole, a fifth pipe body 93 is installed in the first through hole, the second end of the fourth pipe body 91 is threadedly connected with a pipe sleeve 94, the fifth pipe body 93 can slide in the pipe sleeve 94, the lower end of the fifth pipe body 93 is installed with a stop ring 95, the upper end of the stop ring 95 can abut against the lower end of the pipe sleeve 94, the lower end of the floating head 92 can abut against the upper end of the pipe sleeve 94, the fifth pipe body 93 is a plastic pipe, the floating head 92 can drive the fifth pipe body 93 to float on the passivation liquid, in use, as the liquid level of the lower box 71 gradually rises, the floating head 92 drives the fifth pipe body 93 to rise, when the stop ring 95 at the lower end of the fifth pipe body 93 abuts against the lower end of the pipe sleeve 94, the floating head 92 rises to the limit position, the first through hole in the middle part of the floating head 92, the fifth pipe body 93 and the fourth pipe body 91 can leak the liquid level in the lower box 71, so as to prevent the liquid level in the lower box 71 from rising and causing the passivation liquid to overflow, the liquid leakage assembly 9 is usually started when the machine suddenly stops, and it is a control structure of the liquid level of the lower box 71.

[0073] The storage tank 8 comprises a tank body 81 and a cross plate 82, the cross plate 82 is arranged in the middle of the tank body 81, the cross plate 82 divides the tank body 81 into an upper storage cavity 83 and a lower storage cavity 84, a second through hole is arranged in the middle of the cross plate 82, a sixth pipe body 85 is arranged in the second through hole, the sixth pipe body 85 is located in the lower storage cavity 84, a one-way valve is arranged in the sixth pipe body 85, the passivation liquid in the upper storage cavity 83 can flow into the lower storage cavity 84 through the sixth pipe body 85, a seventh pipe body 86 and an eighth pipe body 87 are arranged in the lower storage cavity 84, the seventh pipe body 86 is connected to the spraying assembly 3, the eighth pipe body 87 is connected to the third pipe body 75; a ninth pipe body 88 is arranged in the upper storage cavity 83, the ninth pipe body 88 is connected to one end of a fourth pipe body 91, a booster pump is arranged on the third pipe body 75, the eighth pipe body 87 and the seventh pipe body 86 respectively, so as to control the flow of the passivation liquid, the one-way valve arranged in the sixth pipe body 85 can make the passivation liquid flow from the upper storage cavity 83 to the lower storage cavity 84 only, and cannot flow back, a third through hole is arranged on the cross plate 82, a tenth pipe body 89 is arranged in the third through hole, the tenth pipe body 89 is located in the upper storage cavity 83, a second mist eliminator 810 is arranged on the upper end of the tenth pipe body 89, the tenth pipe body 89 is used for discharging excess gas in the lower storage cavity 84, and filter cotton is arranged at the end of the tenth pipe body 89 for mist capture, so as to prevent liquid gas from being scattered outside, a filler pipe 811 is arranged on the upper end of the tank body 81, the filler pipe 811 is connected to the upper storage cavity 83, the passivation liquid can be added to the upper storage cavity 83 or the concentration of the passivation liquid can be adjusted through the filler pipe 811, so as to ensure the liquid level height of the passivation liquid in the upper storage cavity 83, and in order to facilitate observation, an observable liquid level meter 812 is arranged on the side wall of the tank body 81, the observable liquid level meter 812 is used for observing the liquid level in the upper storage cavity 83, and the observable liquid level meter 812 used in the embodiment is prior art.

[0074] The above merely describes the preferred embodiment of the present application and should not be used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Surface passivation device for the production of galvanized pipes, characterized by the fact that it comprises: The utility model relates to a zinc plating pipe passivation device, including upper box (1), mist hood (2), spray assembly (3), wind spray assembly (4) and adjusting assembly (5), upper box (1) is installed to the frame, and a plurality of support rollers (13) are arranged to the upper box (1) inside along the direction of movement of galvanized pipe, and adjusting assembly (5) is installed to the upper box (1), and spray assembly (3) and wind spray assembly (4) are respectively arranged on adjusting assembly (5), and the upper end of upper box (1) is installed mist hood (2), and the upper end of mist hood (2) is provided with liquid inlet pipe (21) and air inlet pipe (22), and liquid inlet pipe (21) is connected with spray assembly (3), and one end of air inlet pipe (22) is connected with wind spray assembly (4), and the other end of air inlet pipe (22) is connected with external gas injection equipment, and the both sides of upper box (1) are provided with feed pipe (11) and discharge pipe (12) respectively, and galvanized pipe detection switch (6) is arranged on feed pipe (11), and the lower end of upper box (1) is provided with passivation liquid filtering assembly (7), and passivation liquid filtering device is communicated to storage tank (8), and one end of storage tank (8) is connected to liquid inlet pipe (21); Feed pipe (11) and discharge pipe (12) are hollow circular truncated cone structure respectively, a plurality of support rollers (13) are arranged parallel to each other, the periphery of each support roller (13) is rollingly connected to the periphery of the galvanized pipe, and the periphery of the support roller (13) is provided with a support ring groove with an arc-shaped cross section, the periphery of the galvanized pipe contacts the bottom of the support ring groove, and the periphery of the galvanized pipe does not contact the inner side wall of the feed pipe (11) and the discharge pipe (12); The middle part of the support roller (13) is fixedly sleeved with a middle shaft, and a sealing bearing is arranged between the periphery of the middle shaft and the side wall of the upper box (1); The passivation liquid filtering assembly (7) includes a lower box (71) and a collection cover (72), the collection cover (72) is a funnel-shaped structure, the upper end of the collection cover (72) is installed to the lower end of the upper box (1), the lower end of the collection cover (72) is fixedly installed to the upper end of the lower box (71) through a transition plate (73), the transition plate (73) is a U-shaped structure, and the open end of the transition plate (73) can be inserted with a sieve plate (74), the sieve plate (74) can cover the open end of the lower box (71), a third pipe body (75) is installed to the side wall of the lower box (71), and the third pipe body (75) is connected to the storage tank (8); The sieve plate (74) is uniformly provided with sieve holes, the two sides of one end of the sieve plate (74) are respectively provided with bosses (76), the other end of the sieve plate (74) is installed with a blocking plate (77), the two sides of the lower box (71) are respectively provided with guide grooves (711), the periphery of each boss (76) is slidingly connected to one of the guide grooves (711) for positioning the relative position of the sieve plate (74) and the lower box (71), and one side of the blocking plate (77) can abut and block the open end of the transition plate (73). A first sieve flow plate (78) is arranged in the lower box body (71), and the first sieve flow plate (78) is located below the sieve plate (74) and is fixedly connected to the side wall of the lower box body (71) at one end and two sides, and a first gap is arranged between the other end of the first sieve flow plate (78) and the side wall of the box body, and a permanent magnet (79) is arranged in the first gap, and the permanent magnet (79) is mounted on the lower box body (71) or the first sieve flow plate (78); The first sieve flow plate (78) is provided with a first slope, and a plurality of blocking groove plates (710) are mounted on the first sieve flow plate (78), and the plurality of blocking groove plates (710) are uniformly distributed along the first slope, and each blocking groove plate (710) is in an inverted L-shaped structure; The first flow slowing plate (714) and the second flow slowing plate (712) are arranged in the lower box body (71), the first flow slowing plate (714) and the second flow slowing plate (712) are arranged in parallel, and the two sides of the first flow slowing plate (714) and the second flow slowing plate (712) are fixedly connected to the two inner walls of the lower box body (71), and the lower end of the first flow slowing plate (714) is fixedly connected to the bottom of the lower box body (71), and the upper end of the first flow slowing plate (714) is provided with a second gap between the first sieve flow plate (78), and the first flow slowing plate (714) is located between the first gap and the second flow slowing plate (712), and the upper end of the second flow slowing plate (712) abuts against the lower end of the first sieve flow plate (78), and the lower end of the second flow slowing plate (712) is provided with a third gap between the bottom of the lower box body (71); The second sieve flow plate (713) is arranged on one side of the second flow slowing plate (712), and the first flow slowing plate (714) is arranged on the other side of the second flow slowing plate (712), and one end and two sides of the second sieve flow plate (713) are fixedly connected to the bottom of the lower box body (71), and the end of the second sieve flow plate (713) close to the second flow slowing plate (712) is provided with an overflow gap, and the first gap is connected in sequence through the second gap, the third gap and the overflow gap; The second sieve flow plate (713) is located below the first sieve flow plate (78), and the second sieve flow plate (713) is provided with a second slope, and the first slope and the second slope are arranged opposite to each other, and the sieve flow groove (7132) is uniformly distributed along the second slope on the second sieve flow plate (713), and the third pipe body (75) is located at the end of the second sieve flow plate (713) away from the second flow slowing plate (712).

2. The surface passivation device for galvanized pipe production according to claim 1, characterized in that: The detection switch (6) is a photoelectric sensor, the photoelectric sensor is mounted to the inner side wall of the feeding pipe (11), and the photoelectric sensor is used for detecting the presence of the galvanized pipe.

3. The surface passivation device for galvanized pipe production according to claim 1, characterized in that: A plurality of spray assemblies (3) are arranged in the upper box body (1) along the direction of the galvanized pipe, and a wind spray assembly (4) is arranged at the rear of each spray assembly (3), each spray assembly (3) and wind spray assembly (4) are installed on the adjusting assembly (5), the adjusting assembly (5) includes a first support rod (51) and a second support rod (52), the first support rod (51) and the second support rod (52) are arranged perpendicular to each other, the middle part of the second support rod (52) is fixedly connected with the middle part of the first support rod (51), the two ends of the first support rod (51) are respectively provided with a threaded hole, a adjusting bolt (53) is threadedly connected in each threaded hole, a first support plate (14) is fixedly installed on the two sides of the upper box body (1), one end of the adjusting bolt (53) can abut against the upper end of the first support plate (14), and the spray assembly (3) and the wind spray assembly (4) are installed on the second support rod (52).

4. The surface passivation device for galvanized pipe production according to claim 3, characterized in that: The spray assembly (3) includes a first pipe body (31), the lower end of the first pipe body (31) is provided with a first nozzle (32), the upper end of the first pipe body (31) is connected to the liquid inlet pipe (21), and the periphery of the first pipe body (31) is fixedly installed on the second support rod (52); The lower end of the first pipe body (31) is provided with a distribution box (33), the lower end of the distribution box (33) is provided with two first nozzles (32), each first nozzle (32) is arranged at an angle with the lower end of the distribution box (33), the two first nozzles (32) are oppositely arranged, and the discharge end of each first nozzle (32) faces the periphery of the galvanized pipe; The wind spray assembly (4) includes a second pipe body (41), the lower end of the second pipe body (41) is connected to a wind ring (42), and the wind ring (42) is located at the periphery of the galvanized pipe, a plurality of air holes are arranged on the inner ring of the wind ring (42) in the circumferential direction, a second nozzle is installed in each air hole, and the outlet end of the second nozzle faces the periphery of the galvanized pipe, the upper end of the second pipe body (41) is connected to the air inlet pipe (22), and the periphery of the second pipe body (41) is slidably connected to the second support rod (52); A first sliding hole is arranged on the second support rod (52), and a locking bolt (43) is threadedly connected to the second support rod (52), the periphery of the second pipe body (41) is slidably connected to the first sliding hole, and one end of the locking bolt (43) can abut against the periphery of the second pipe body (41).

5. The surface passivation device for galvanized pipe production according to claim 1, characterized in that: The lower end of the mist suction cover (2) is connected to the upper end of the upper box body (1), and the mist suction cover (2) is in the form of an inverted funnel, the upper end of the mist suction cover (2) is provided with an exhaust pipe (23), a first mist catcher is installed at the inlet end of the exhaust pipe (23), a vacuum pump is arranged on the exhaust pipe (23), and the outlet end of the exhaust pipe (23) is connected to an external waste gas collection tank.

6. The surface passivation device for galvanized pipe production according to claim 1, characterized in that: The lower box body (71) is further provided with a drainage assembly (9), the drainage assembly (9) comprises a fourth pipe body (91), the fourth pipe body (91) is an L-shaped structure, the periphery of the fourth pipe body (91) is fixedly installed to the lower box body (71), the first end of the fourth pipe body (91) is communicated to the storage tank (8), the second end of the fourth pipe body (91) is provided with a floating head (92), the floating head (92) can float in the passivation liquid, and a first through hole is arranged in the middle of the floating head (92), a fifth pipe body (93) is arranged in the first through hole, a sleeve (94) is threadedly connected to the inner ring of the second end of the fourth pipe body (91), the fifth pipe body (93) can slide in the sleeve (94), and a stop ring (95) is arranged at the lower end of the fifth pipe body (93), the upper end of the stop ring (95) can abut against the lower end of the sleeve (94), and the lower end of the floating head (92) can abut against the upper end of the sleeve (94).

7. A surface passivation device for the production of galvanized pipes according to claim 6, characterized in that: The storage tank (8) comprises a tank body (81) and a transverse plate (82), the transverse plate (82) is arranged in the middle of the tank body (81), the transverse plate (82) divides the tank body (81) into an upper storage cavity (83) and a lower storage cavity (84), a second through hole is arranged in the middle of the transverse plate (82), and a sixth pipe body (85) is arranged in the second through hole, the sixth pipe body (85) is located in the lower storage cavity (84), and a one-way valve is arranged in the sixth pipe body (85), the passivation liquid in the upper storage cavity (83) can flow into the lower storage cavity (84) through the sixth pipe body (85), and the lower storage cavity (84) is provided with a seventh pipe body (86) and an eighth pipe body (87), the seventh pipe body (86) is communicated to the spraying assembly (3), and the eighth pipe body (87) is communicated to the third pipe body (75); a ninth pipe body (88) is arranged in the upper storage cavity (83), and the ninth pipe body (88) is communicated to one end of the fourth pipe body (91); A third through hole is arranged in the transverse plate (82), and a tenth pipe body (89) is arranged in the third through hole, the tenth pipe body (89) is located in the upper storage cavity (83), and a second mist eliminator (810) is arranged at the upper end of the tenth pipe body (89); A filler pipe (811) is arranged at the upper end of the tank body (81), and the filler pipe (811) is communicated to the upper storage cavity (83); An observable liquid level meter (812) is arranged on the side wall of the tank body (81), and the observable liquid level meter (812) is used for observing the liquid level in the upper storage cavity (83).

Images