Surface passivation device for galvanized pipe production

Abstract

The invention provides a surface passivation device for galvanized pipe production, which is characterized in that an upper box body is provided with an adjusting assembly, the adjusting assembly is respectively provided with a spraying assembly and an air shower assembly, the upper end of the upper box body is provided with a mist suction cover, and the lower end of the upper box body is provided with a passivation solution filtering assembly. According to the surface passivation device for galvanized pipe production, the detection switch is used for detecting the existence of a galvanized pipe so as to start spraying and air showering operation, passivation liquid can be sprayed to the surface of the galvanized pipe through the spraying assembly, redundant passivation liquid on the surface of the galvanized pipe is removed through air blowing of the air showering assembly, and in the air showering and spraying process, the surface of the galvanized pipe is subjected to surface passivation. In order to prevent the passivating liquid from being vaporized and diffused to the periphery and influencing the working environment, the vaporized passivating liquid is absorbed and removed through a mist absorbing cover, and a passivating liquid filtering assembly is arranged below the upper box body, so that the passivating liquid sprayed to the periphery of the galvanized pipe is filtered in time and put into use again, and the utilization rate and efficiency of materials are increased; the cost is saved.

Description

Technical Field

[0001] The present invention belongs to the field of metal passivation, and in particular relates to a surface passivation device for the production of galvanized pipes. Background Art

[0002] In the modern industrial field, galvanized steel pipes, as key basic materials, are widely used in many industries such as petrochemical, building structures, and machinery manufacturing. To effectively improve the corrosion resistance of galvanized steel pipes, passivation treatment has become an essential surface treatment process in the industry. Passivation refers to driving the metal atoms on the surface layer of the steel pipe to react chemically with a suitable specific passivating agent through chemical methods, thereby forming a dense, stable, and strongly adherent passivation film to isolate external corrosive media and protect the steel pipe substrate.

[0003] In the prior art, the passivation of galvanized steel pipes is usually carried out by immersion or spraying methods. Among them, spray passivation is to place the steel pipe under the spray head and complete the full spraying of the steel pipe surface by spraying the passivation liquid. After spraying, it is necessary to clean the residual passivation liquid on the steel pipe surface. In the prior art, the residual passivation liquid for cleaning is basically discarded, which not only increases the environmental protection pressure but also causes waste of materials and increases the production cost. Summary of the Invention

[0004] In view of this, the present invention aims to propose a surface passivation device for the production of galvanized pipes to solve the problems of low utilization efficiency of passivation liquid materials and high costs in the passivation process of galvanized steel pipes in the prior art.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] A surface passivation device for the production of galvanized pipes includes an upper box body, a mist suction hood, a spray component, an air shower component, and an adjustment component. The upper box body is installed on the frame. Inside the upper box body, a plurality of support rollers are arranged along the moving direction of the galvanized pipe. An adjustment component is installed on the upper box body, and the spray component and the air shower component are respectively arranged on the adjustment component. A mist suction hood is installed at the upper end of the upper box body. An inlet liquid pipe and an inlet air pipe are arranged on the mist suction hood. The inlet liquid pipe is connected to the spray component, one end of the inlet air pipe is connected to the air shower component, and the other end of the inlet air pipe is connected to an external gas injection device. Feed pipes and discharge pipes are respectively arranged on both sides of the upper box body. A galvanized pipe detection switch is arranged on the feed pipe. A passivation liquid filtration component is arranged at the lower end of the upper box body, and the passivation liquid filtration device is communicated with a storage tank. One end of the storage tank is connected to the inlet liquid pipe.

[0007] Furthermore, the feed pipe and the discharge pipe are respectively of a hollow frustum structure. A plurality of support rollers are arranged in parallel. The periphery of each support roller is rollingly connected to the periphery of the galvanized pipe. An arc-shaped support ring groove is provided on the periphery of the support roller. 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 walls of the feed pipe and the discharge pipe.

[0008] Furthermore, a central shaft is fixedly sleeved in the middle of the support roller, and a sealed bearing is arranged between the periphery of the central shaft and the side wall of the upper box body.

[0009] Furthermore, the detection switch is a photoelectric sensor. The photoelectric sensor is installed on the inner side wall of the feed pipe and is used to detect the presence of the galvanized pipe.

[0010] Furthermore, a plurality of spray components are arranged in the upper box body along the traveling direction of the galvanized pipe. A blow-off component is arranged at the rear section of each spray component. Each spray component and blow-off component are installed on an adjustment component. The adjustment component includes a first support rod and a second support rod. The first support rod and the second support rod are perpendicularly arranged. The middle of the second support rod is fixedly connected to the middle of the first support rod. Threaded holes are respectively arranged at both ends of the first support rod. An adjustment bolt is threadedly connected in each threaded hole. A first support plate is fixedly installed on both sides of the upper box body. One end of the adjustment bolt can abut against the upper end of the first support plate. The spray component and the blow-off component are installed on the second support rod.

[0011] Furthermore, the spray component includes a first pipe body. A first spray head 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. The periphery of the first pipe body is fixedly installed on the second support rod.

[0012] Furthermore, a material distribution box is arranged at the lower end of the first pipe body. Two first spray heads are arranged at the lower end of the material distribution box. Each first spray head has an angle with the lower end of the material distribution box. The two first spray heads are arranged oppositely. The discharge end of each first spray head faces the periphery of the galvanized pipe.

[0013] Furthermore, the blow-off component includes a second pipe body. The lower end of the second pipe body is connected to a wind ring. The wind ring is located on the periphery of the galvanized pipe. A plurality of ventilation holes are arranged along the circumferential direction on the inner circle of the wind ring. A second spray head is installed in each ventilation hole. The outlet end of the second spray head faces the periphery of the galvanized pipe. The upper end of the second pipe body is connected to an air inlet pipe. The periphery of the second pipe body is slidably connected to the second support rod.

[0014] Furthermore, a first sliding hole is provided on the second support rod. A locking bolt is threadedly connected to the second support rod. The periphery of the second pipe body is slidably connected into the first sliding hole. 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 of an inverted funnel structure. An exhaust pipe is arranged at the upper end of the mist suction hood. A first mist catcher is installed at the inlet end of the exhaust pipe. A vacuum pump is arranged on the exhaust pipe. The outlet end of the exhaust pipe is connected to an external waste gas collection tank.

[0016] Further, the passivation liquid filtering assembly includes a lower box body and a collection hood. The collection hood is of a funnel-shaped structure. The upper end of the collection hood is installed on the lower end of the upper box body. The lower end of the collection hood is fixedly installed on the upper end of the lower box body through a transition plate. The transition plate is of a U-shaped structure, and the open end of the transition plate can be inserted with a sieve plate. The sieve plate can cover the open end of the lower box body. A third pipe body is installed 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 evenly distributed with sieve holes. Convex platforms are respectively arranged on both sides of one end of the sieve plate. A blocking plate is installed at the other end of the sieve plate. Guide grooves are respectively arranged on both sides of the lower box body. The periphery of each convex platform is slidably connected into a guide groove to position the relative position of the sieve plate and the lower box body, and one side of the blocking plate can abut against and block the open end of the transition plate.

[0018] Further, a first sieve flow plate is installed in the lower box body. The first sieve flow plate is located below the sieve plate. One end and both sides of the first sieve flow plate are fixedly connected to the side wall of the lower box body. A first gap is provided 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. The permanent magnet is installed 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 installed on the first sieve flow plate. The plurality of blocking groove plates are evenly distributed along the first slope, and each blocking groove plate is of an inverted L-shaped structure.

[0020] Further, a first slow flow plate and a second slow flow plate are respectively arranged in the lower box body. The first slow flow plate and the second slow flow plate are arranged in parallel. Both sides of the first slow flow plate and the second slow flow plate are respectively fixedly connected to the inner walls of both sides of the lower box body. The lower end of the first slow flow plate is fixedly connected to the bottom of the lower box body. A second gap is provided between the upper end of the first slow flow plate and the first sieve flow plate. The first slow flow plate is located between the first gap and the second slow flow plate. The upper end of the second slow flow plate abuts against the lower end of the first sieve flow plate. A third gap is provided between the lower end of the second slow flow plate and the bottom of the lower box body.

[0021] Further, a second sieve flow plate is installed on one side of the second slow flow plate. The first slow flow plate is located on the other side of the second slow flow plate. One end and both sides of the second sieve flow plate are fixedly connected to the bottom of the lower box body. An overflow gap is provided at one end of the second sieve flow plate close to the second slow flow plate. The first gap is sequentially communicated with 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 the second sieve flow plate is provided with a second slope. The first slope and the second slope are arranged oppositely. Sieve flow grooves are uniformly distributed 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 slow flow plate.

[0023] Further, a drain assembly is also provided on the lower box body. The drain assembly includes a fourth pipe body, and the fourth pipe body is of an L-shaped structure. The periphery of the fourth pipe body is fixedly installed on the lower box body. The first end of the fourth pipe body communicates with the storage tank. A floating head is provided at the second end of the fourth pipe body. The floating head can float in the passivation liquid, and a first through hole is provided in the middle of the floating head. A fifth pipe body is installed in the first through hole. The inner circle of the second end of the fourth pipe body is threadedly connected with a pipe sleeve. The fifth pipe body can slide in the pipe sleeve, and a retaining ring is installed at the lower end of the fifth pipe body. The upper end of the retaining ring can abut against the lower end of the pipe sleeve, and the lower end of the floating head can abut against the upper end of the pipe sleeve.

[0024] Further, the storage tank includes a tank body and a transverse plate. A transverse plate is arranged in the middle of the tank body. The transverse plate divides the interior of the tank body into an upper storage cavity and a lower storage cavity. A second through hole is provided in the middle of the transverse plate. A sixth pipe body is installed in the second through hole. The sixth pipe body is located in the lower storage cavity, and a one-way valve is installed in the sixth pipe body. The passivation liquid in the upper storage cavity can flow into the lower storage cavity through the sixth pipe body. A seventh pipe body and an eighth pipe body are provided in the lower storage cavity. The seventh pipe body communicates with the spraying assembly, and the eighth pipe body communicates with the third pipe body; a ninth pipe body is provided in the upper storage cavity, and the ninth pipe body communicates with one end of the fourth pipe body;

[0025] Further, a third through hole is provided on the transverse plate. A tenth pipe body is installed in the third through hole. The tenth pipe body is located in the upper storage cavity, and a second mist catcher is installed at the upper end of the tenth pipe body;

[0026] Further, a packing pipe is installed at the upper end of the tank body, and the packing pipe communicates with the upper storage cavity;

[0027] Further, an observable liquid level gauge is arranged on the side wall of the tank body, and the observable liquid level gauge is used to observe the liquid level in the upper storage cavity.

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

[0029] (1) For the surface passivation device for galvanized pipe production of the present invention, the detection switch is used to detect the presence of the galvanized pipe so as to start the spraying and air shower operations. The passivation liquid can be sprayed onto the surface of the galvanized pipe through the spraying assembly, and the excess passivation liquid on the surface of the galvanized pipe is scraped off by the air shower assembly so as to complete the passivation of the surface of the galvanized pipe;

[0030] During the air shower and spraying processes, the passivation liquid will be atomized into gas. To prevent the vaporized passivation liquid from diffusing to the surrounding area and affecting the working environment, a mist suction hood is used to suck out the vaporized passivation liquid. In addition, a passivation liquid filtering component is arranged below the upper box body to timely filter the passivation liquid sprayed on the periphery of the galvanized pipe and put it into use again, increasing the material utilization rate and efficiency and saving costs.

[0031] (2)For the surface passivation device for galvanized pipe production of the present invention, the ends of the feed pipe and the discharge pipe far from the upper box body are small-diameter ends, so that the feed pipe and the discharge pipe are in a converging structure relative to the upper box body. The liquid droplets generated during the spraying and air shower operations can be effectively intercepted by this converging structure to prevent material loss caused by the overflow of the passivation liquid and prevent pollution of the working environment.

[0032] (3)For the surface passivation device for galvanized pipe production of the present invention, the periphery of the galvanized pipe is first sprayed with the passivation liquid by the spraying component, and then passes through the air shower component, and the air knife scrapes off the excess passivation liquid on the surface of the galvanized pipe. Both the spraying component and the air shower component are installed on the adjusting component, and the relative height of the spraying component and the air shower component relative to the upper box body can be adjusted simultaneously through the adjusting component, so that when the galvanized pipe is changed in type, the relative positions of the spraying component and the air shower component can be adjusted in a timely and rapid manner.

[0033] (4)For the surface passivation device for galvanized pipe production of the present invention, a first sliding hole is provided on the second support rod, and a locking bolt is threadedly connected to the second support rod. The outer periphery of the second pipe body is slidably connected into the first sliding hole, and one end of the locking bolt can abut against the outer periphery of the second pipe body. The relative position of the second pipe body and the second support rod can be adjusted through the locking bolt, that is, the initial relative position of the second nozzle and the first nozzle on the air ring can be adjusted to meet the usage requirements of different working conditions.

[0034] (5)For the surface passivation device for galvanized pipe production of the present invention, large zinc nodules or zinc blocks can be intercepted by the sieve plate to prevent the zinc nodules or zinc blocks from blocking the passivation liquid conveying pipeline or damaging the conveying equipment. Effective screening can be carried out through material interception, and the inverted L-shaped structure blocking groove plate is used to intercept small particle pollutants in the passivation liquid to achieve the purpose of assisting the sieve plate for screening.

[0035] (6)For the surface passivation device for galvanized pipe production of the present invention, the passivation liquid flows into the upper part of the first sieve flow plate through the sieve plate, and then flows through the first slope into the first gap. The flow rate of the passivation liquid can be alleviated through the first slow flow plate and the second slow flow plate, so that the passivation liquid can be slowly injected onto the second slope, and the powdery and flocculent pollutants are retained in the sieve flow groove on the second slope to improve the cleanliness of the passivation liquid. Description of the Drawings

[0036] The accompanying drawings, which form a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0037] Figure 1 is a schematic structural diagram of a surface passivation device for galvanized pipe production according to an embodiment of the present invention;

[0038] Figure 2 is a schematic structural diagram of an adjustment component installed on an upper box body according to an embodiment of the present invention;

[0039] Figure 3 is a schematic structural diagram of the cooperation of a spray component, an air shower component and an adjustment component according to an embodiment of the present invention;

[0040] Figure 4 is a schematic structural diagram of the spray component according to an embodiment of the present invention;

[0041] Figure 5 is a schematic structural diagram of the interior of the upper box body according to an embodiment of the present invention;

[0042] Figure 6 is a schematic sectional view of the upper box body according to an embodiment of the present invention;

[0043] Figure 7 is a schematic structural diagram of the mist suction hood according to an embodiment of the present invention;

[0044] Figure 8 is a schematic structural diagram of the passivation liquid filtration component according to an embodiment of the present invention;

[0045] Figure 9 is a schematic structural diagram of the cooperation of the collection hood and the transition plate according to an embodiment of the present invention;

[0046] Figure 10 is a schematic structural diagram of the sieve plate according to an embodiment of the present invention;

[0047] Figure 11 is a schematic structural diagram of the lower box body according to an embodiment of the present invention;

[0048] Figure 12 is a schematic structural diagram of the transition plate and the collection hood arranged on the lower box body according to an embodiment of the present invention;

[0049] Figure 13 is a schematic sectional view of the interior of the lower box body according to an embodiment of the present invention;

[0050] Figure 14 is a schematic structural diagram of the assembly of the first sieve flow plate and its lower components according to an embodiment of the present invention;

[0051] Figure 15Schematic diagram of the internal structure of the lower box body according to the embodiment of the present invention;

[0052] Figure 16 Schematic diagram of the structure of the flow discharge assembly according to the embodiment of the present invention;

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

[0054] Figure 18 Schematic diagram of the structure of the storage tank according to the embodiment of the present invention;

[0055] Figure 19 Cross-sectional schematic diagram of the storage tank according to the embodiment of the present invention.

[0056] Explanation of reference numerals:

[0057] 1 - upper box body; 11 - feed pipe; 12 - discharge pipe; 13 - support roller; 14 - first support plate; 2 - mist suction hood; 21 - liquid inlet pipe; 22 - air inlet pipe; 23 - exhaust pipe; 3 - spraying assembly; 31 - first pipe body; 32 - first spray head; 33 - material distribution box; 4 - air shower assembly; 41 - second pipe body; 42 - air ring; 43 - locking bolt; 5 - adjusting assembly; 51 - first support rod; 52 - second support rod; 53 - adjusting bolt; 6 - detection switch; 7 - passivation liquid filtering assembly; 71 - lower box body; 711 - guiding groove; 72 - collection hood; 73 - transition plate; 74 - sieve plate; 75 - third pipe body; 76 - convex platform; 77 - blocking plate; 78 - first sieve flow plate; 79 - permanent magnet; 710 - barrier groove plate; 714 - first flow - reducing plate; 712 - second flow - reducing plate; 713 - second sieve flow plate; 7131 - filtering gap; 7132 - sieve flow groove; 8 - storage tank; 81 - tank body; 82 - transverse plate; 83 - upper storage cavity; 84 - lower storage cavity; 85 - sixth pipe body; 86 - seventh pipe body; 87 - eighth pipe body; 88 - ninth pipe body; 89 - tenth pipe body; 810 - second mist catcher; 811 - packing pipe; 812 - observable liquid level gauge; 9 - flow discharge assembly; 91 - fourth pipe body; 92 - floating head; 93 - fifth pipe body; 94 - pipe sleeve; 95 - retaining ring. Detailed implementation manners

[0058] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0059] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0060] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

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

[0062] Such as Figures 1-19As shown, a 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 frame. After the galvanized pipe is completed, the surface of the galvanized pipe needs to be passivated. The galvanized pipe is axially conveyed on the conveying rollers. Inside the upper box body 1, a plurality of support rollers 13 are arranged 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 at the upper end of the upper box body 1. An inlet liquid pipe 21 and an inlet air pipe 22 are arranged on the mist suction hood 2. The inlet liquid pipe 21 is connected to the spraying assembly 3. One end of the inlet air pipe 22 is connected to the air shower assembly 4, and the other end of the inlet air pipe 22 is connected to an external gas injection device. Feed pipes 11 and a discharge pipe 12 are respectively arranged on both sides of the upper box body 1. A galvanized pipe detection switch 6 is arranged on the feed pipe 11. A passivation liquid filtering assembly 7 is arranged at the lower end of the upper box body 1, and the passivation liquid filtering device is communicated to a storage tank 8. One end of the storage tank 8 is connected to the inlet liquid 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 operations. The spraying assembly 3 can spray the passivation liquid onto the surface of the galvanized pipe. The excess passivation liquid on the surface of the galvanized pipe is scraped off by the air shower assembly 4 so as to complete the passivation of the surface of the galvanized pipe. And during the air shower and spraying processes, the passivation liquid will be atomized into gas. To prevent the vaporized passivation liquid from diffusing to the surrounding and affecting the working environment, the vaporized passivation liquid is sucked by the mist suction hood 2. And a passivation liquid filtering assembly 7 is arranged below the upper box body 1 so as to timely filter the passivation liquid sprayed around the galvanized pipe and put it into use again, increasing the material utilization rate and efficiency and saving costs.

[0063] The feed pipe 11 and the discharge pipe 12 are respectively of a hollow frustum structure. The ends of the feed pipe 11 and the discharge pipe 12 far from the upper box body 1 are small-diameter ends. The plurality of support rollers 13 are arranged in parallel. The periphery of each support roller 13 is rollingly connected to the periphery of the galvanized pipe, and an arc-shaped support ring groove is arranged on the periphery of the support roller 13. 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 walls of the feed pipe 11 and the discharge pipe 12. The ends of the feed pipe 11 and the discharge pipe 12 far from the upper box body 1 are small-diameter ends, so that the feed pipe 11 and the discharge pipe 12 are in a converging structure relative to the upper box body 1. The liquid droplets generated during the spraying and air shower operations can be effectively intercepted by this converging structure to prevent material loss caused by the overflow of the passivation liquid and prevent pollution of the working environment. And in order to prevent the passivation liquid from flowing out between the support roller 13 and the upper box body 1, a central shaft is fixedly sleeved in the middle of the support roller 13, and a sealed bearing is arranged between the periphery of the central shaft and the side wall of the upper box body 1.

[0064] The detection switch 6 is a photoelectric sensor of the prior art. An opening is made on the side wall of the feed pipe 11, and a thin steel pipe is arranged at the opening part. The photoelectric sensor is sleeved in the thin steel pipe, and the execution end of the photoelectric sensor can irradiate into the feed pipe 11. When the galvanized pipe passes through the feed 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 this 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 provision of power also belongs to the common knowledge in this field, and this article is mainly used to protect mechanical devices. The control mode and circuit connection are not explained in detail in this article.

[0065] A plurality of spraying components 3 are arranged in the upper box body 1 along the advancing direction of the galvanized pipe, and an air shower component 4 is arranged at the rear section of each spraying component 3. During implementation, the periphery of the galvanized pipe first passes through the spraying component 3 to spray the passivation liquid, and then passes through the air shower component 4, and the air knife scrapes off the excess passivation liquid on the surface of the galvanized pipe. Each spraying component 3 and air shower component 4 are installed on the adjusting component 5. Through the adjusting component 5, the heights of the spraying component 3 and the air shower component 4 relative to the upper box body 1 can be adjusted simultaneously, so that when the galvanized pipe is changed in type, the relative positions of the spraying component 3 and the air shower component 4 can be adjusted in time and quickly. The adjusting component 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 to the middle part of the first support rod 51. Threaded holes are respectively arranged at both ends of the first support rod 51, and an adjusting bolt 53 is threadedly connected in each threaded hole. A first support plate 14 is fixedly installed on both 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. The spraying component 3 and the air shower component 4 are installed on the second support rod 52. The relative positions of the first support rod 51 and the second support rod 52 are fixed, and through, the relative positions of the first support plate 14 and the upper box body 1 are fixed. By adjusting the adjusting bolt 53, the relative positions of the first support rod 51 and the first support plate 14 can be adjusted, and the galvanized pipe is arranged on the support roller 13. By adjusting the relative positions of the first support plate 14 and the first support rod 51, the relative positions of the air shower component 4 and the spraying component 3 relative to the galvanized pipe can be adjusted, so as to meet different use conditions.

[0066] The spraying component 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 periphery of the first pipe body 31 is fixedly installed on the second support rod 52; as Figure 4As shown, a material distribution box 33 is provided at the lower end of the first pipe body 31, and two first spray heads 32 are provided at the lower end of the material distribution box 33. Each first spray head 32 is angled with respect to the lower end of the material distribution box 33. The two first spray heads 32 are arranged facing each other, and the discharge end of each first spray head 32 faces the periphery of the galvanized pipe. Through multiple spray heads, multi-angle spraying operations can be performed on the periphery of the galvanized pipe, improving the passivation efficiency. And 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 on the periphery of the galvanized pipe. A plurality of ventilation holes are provided along the circumferential direction of the inner ring of the air ring 42. A second spray head is installed in each ventilation hole, and 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 intake pipe 22, and the periphery of the second pipe body 41 is slidably connected to the second support rod 52.

[0067] As Figure 3 As shown, a first sliding hole is provided 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 into the first sliding hole, and one end of the locking bolt 43 can abut against the periphery of the second pipe body 41. The relative position of the second pipe body 41 and the second support rod 52 can be adjusted through the locking bolt 43, that is, the initial relative position between the second spray head on the air ring 42 and the first spray head 32 can be adjusted to meet the usage 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 of an inverted funnel structure. An exhaust pipe 23 is provided at the upper end of the mist suction hood 2. A first mist catcher is installed at the inlet end of the exhaust pipe 23. A vacuum pump is provided on the exhaust pipe 23. 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 vaporized beads will remain on the filter cotton, and will drip back into the upper box body 1 as the vaporized beads accumulate.

[0069] The passivation liquid filtration assembly 7 includes a lower box body 71 and a collection cover 72. The collection cover 72 is of a funnel-shaped structure. The upper end of the collection cover 72 is installed at the lower end of the upper box body 1. The lower end of the collection cover 72 is fixedly installed at the upper end of the lower box body 71 through a transition plate 73. The transition plate 73 is of 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 body 71. A third pipe body 75 is installed on the side wall of the lower box body 71. The third pipe body 75 is connected to a storage tank 8. Sieve holes are evenly distributed on the sieve plate 74. Convex platforms 76 are respectively arranged on both sides of one end of the sieve plate 74. A blocking plate 77 is installed at the other end of the sieve plate 74. Guide grooves 711 are respectively arranged on both sides of the lower box body 71. The periphery of each convex platform 76 is slidably connected into a guide groove 711 to position the relative position of the sieve plate 74 and the lower box body 71. And one side of the blocking plate 77 can abut against and block the open end of the transition plate 73. When the passivation liquid and the air ring 42 operate on the periphery of the galvanized pipe, large particles that are not firmly attached to the galvanized pipe will be washed down. The sieve plate 74 can intercept large zinc nodules or zinc blocks to prevent the zinc nodules or zinc blocks from causing blockage of the passivation liquid delivery pipeline or damage to the delivery equipment. Effective screening can be carried out through material interception.

[0070] A first sieve flow plate 78 is installed in the lower box body 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 body 71. A first gap is provided 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. The permanent magnet 79 is installed on the lower box body 71 or the first sieve flow plate 78. The permanent magnet 79 is used to adsorb iron filings. In this embodiment, the permanent magnet 79 is detachably installed on the first sieve flow plate 78. The permanent magnet 79 is an optional component and may not be installed during 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 evenly distributed along the first slope. And each blocking groove plate 710 is of an inverted L-shaped structure. The blocking groove plate is used to intercept small particle pollutants in the passivation liquid, achieving the purpose of assisting the sieve plate 74 in screening.

[0071] A first flow baffle 714 and a second flow baffle 712 are respectively arranged inside the lower box body 71. The first flow baffle 714 and the second flow baffle 712 are arranged in parallel with each other, and both sides of the first flow baffle 714 and the second flow baffle 712 are fixedly connected to the inner walls on both sides of the lower box body 71 respectively. The lower end of the first flow baffle 714 is fixedly connected to the bottom of the lower box body 71. A second gap is provided between the upper end of the first flow baffle 714 and the first sieve flow plate 78, and the first flow baffle 714 is located between the first gap and the second flow baffle 712. The upper end of the second flow baffle 712 abuts against the lower end of the first sieve flow plate 78. A third gap is provided between the lower end of the second flow baffle 712 and the bottom of the lower box body 71. A second sieve flow plate 713 is installed on one side of the second flow baffle 712. The first flow baffle 714 is located on the other side of the second flow baffle 712. One end and both sides of the second sieve flow plate 713 are fixedly connected to the bottom of the lower box body 71, and an over-flow gap is provided at the end of the second sieve flow plate 713 close to the second flow baffle 712. The first gap is sequentially communicated with the second gap, the third gap and the over-flow gap. The second sieve flow plate 713 is located below the first sieve flow plate 78, and a second slope is provided on the second sieve flow plate 713. The first slope and the second slope are arranged oppositely. Sieve flow grooves 7132 are evenly 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 far from the second flow baffle 712. The passivation liquid flows into the area above the first sieve flow plate 78 through the sieve plate 74, then flows into the first gap through the first slope. The flow rate of the passivation liquid can be alleviated by the first flow baffle 714 and the second flow baffle 712, so that the passivation liquid can be slowly injected onto the second slope, and then the powdery and flocculent pollutants are retained in the sieve flow grooves 7132 on the second slope to improve the cleanliness of the passivation liquid.

[0072] The lower box body 71 is also provided with a drain assembly 9. The drain assembly 9 includes a fourth pipe body 91, and the fourth pipe body 91 is of 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 communicates with the storage tank 8. A floating head 92 is provided at the second end of the fourth pipe body 91. The floating head 92 can float in the passivation liquid, and a first through hole is provided in the middle of the floating part. A fifth pipe body 93 is installed in the first through hole. The inner circle of the second end of the fourth pipe body 91 is threadedly connected to a pipe sleeve 94. The fifth pipe body 93 can slide in the pipe sleeve 94, and a retaining ring 95 is installed at the lower end of the fifth pipe body 93. The upper end of the retaining 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. During use, as the liquid level in the lower box body 71 gradually rises, the floating head 92 drives the fifth pipe body 93 to rise. When the retaining 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 extreme limit. Through the first through hole in the middle of the floating head 92, the fifth pipe body 93 and the fourth pipe body 91, the liquid level in the lower box body 71 can be drained to prevent the liquid level in the lower box body 71 from rising and causing the passivation liquid to overflow. The drain assembly 9 is usually started when the machine suddenly stops and is a control structure for the liquid level in the lower box body 71.

[0073] The storage tank 8 includes 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 interior of the tank body 81 into an upper storage cavity 83 and a lower storage cavity 84. A second through hole is provided in the middle of the transverse plate 82, and a sixth pipe body 85 is installed in the second through hole. The sixth pipe body 85 is located in the lower storage cavity 84, and a one-way valve is installed 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, and 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, and one end of the ninth pipe body 88 is connected to the fourth pipe body 91. Booster pumps are respectively installed on the third pipe body 75, the eighth pipe body 87 and the seventh pipe body 86 to control the flow of the passivation liquid. By arranging a one-way valve in the sixth pipe body 85, the passivation liquid can only flow from the upper storage cavity 83 to the lower storage cavity 84 and will not flow back. A third through hole is provided in the transverse plate 82, and a tenth pipe body 89 is installed in the third through hole. The tenth pipe body 89 is located in the upper storage cavity 83. A second mist catcher 810 is installed at the upper end of the tenth pipe body 89. The tenth pipe body 89 is used to exhaust the excess gas in the lower storage cavity 84, and filter cotton is arranged at the end of the tenth pipe body 89 for mist catching to prevent the liquid and gas from escaping. A packing pipe 811 is installed at the upper end of the tank body 81, and the packing pipe 811 is connected to the upper storage cavity 83. The passivation liquid can be added into the upper storage cavity 83 or the concentration of the passivation liquid can be adjusted through the packing pipe 811 to ensure the liquid level height of the passivation liquid in the upper storage cavity 83. For the convenience of observation, an observable liquid level gauge 812 is arranged on the side wall of the tank body 81. The observable liquid level gauge 812 is used to observe the liquid level in the upper storage cavity 83, and the observable liquid level gauge 812 used in this embodiment is of the prior art.

[0074] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Surface passivation device for galvanized pipe production, characterized in that: It 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 frame. Inside the upper box body (1), a plurality of supporting rollers (13) are arranged 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 at the upper end of the upper box body (1). A liquid inlet pipe (21) and a gas inlet pipe (22) are arranged on the mist suction hood (2). The liquid inlet pipe (21) is connected to the spraying assembly (3). One end of the gas inlet pipe (22) is connected to the air shower assembly (4), and the other end of the gas inlet pipe (22) is connected to an external gas injection device. A feed pipe (11) and a discharge pipe (12) are respectively arranged on both sides of the upper box body (1). A galvanized pipe detection switch (6) is arranged on the feed pipe (11). A passivation liquid filtering assembly (7) is arranged at the lower end of the upper box body (1), and the passivation liquid filtering device is communicated to a storage tank (8). One end of the storage tank (8) is connected to the liquid inlet pipe (21).

2. The surface passivation device for galvanized pipe production according to claim 1, characterized in that: The feed pipe (11) and the discharge pipe (12) are respectively of a hollow frustum structure. A plurality of supporting rollers (13) are arranged in parallel. The periphery of each supporting roller (13) is in rolling connection with the periphery of the galvanized pipe. And an arc-shaped supporting ring groove is arranged on the periphery of the supporting roller (13). The periphery of the galvanized pipe contacts the bottom of the supporting ring groove, and the periphery of the galvanized pipe does not contact the inner side walls of the feed pipe (11) and the discharge pipe (12). The middle part of the supporting roller (13) is fixedly sleeved with a central shaft, and a sealing bearing is arranged between the periphery of the central shaft and the side wall of the upper box body (1).

3. 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 installed on the inner side wall of the feed pipe (11), and the photoelectric sensor is used to detect the presence of the galvanized pipe.

4. The surface passivation device for galvanized pipe production according to claim 1, characterized in that: A plurality of spraying assemblies (3) are arranged in the upper box body (1) along the advancing direction of the galvanized pipe. And an air shower assembly (4) is arranged at the rear section of each spraying assembly (3). Each spraying assembly (3) and the air shower assembly (4) are both 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 to the middle part of the first support rod (51). Threaded holes are respectively arranged at both ends of the first support rod (51). An adjusting bolt (53) is in threaded connection in each threaded hole. First support plates (14) are respectively and fixedly installed on both 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). The spraying assembly (3) and the air shower assembly (4) are installed on the second support rod (52).

5. The surface passivation device for galvanized pipe production according to claim 4, characterized in that: The spraying assembly (3) includes a first pipe body (31). A first spray head (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 periphery of the first pipe body (31) is fixedly installed on the second support rod (52). A material distribution box (33) is provided at the lower end of the first pipe body (31). Two first spray nozzles (32) are provided at the lower end of the material distribution box (33). Each first spray nozzle (32) is angled with respect to the lower end of the material distribution box (33). The two first spray nozzles (32) are arranged oppositely. The discharge end of each first spray nozzle (32) faces the periphery of the galvanized pipe. 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 on the periphery of the galvanized pipe. A plurality of ventilation holes are provided along the circumferential direction of the inner circle of the air ring (42). A second spray nozzle is installed in each ventilation hole, and the outlet end of the second spray nozzle faces the periphery of the galvanized pipe. The upper end of the second pipe body (41) is connected to an intake pipe (22). The periphery of the second pipe body (41) is slidably connected to a second support rod (52). A first sliding hole is provided 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 into the first sliding hole, and one end of the locking bolt (43) can abut against the periphery of the second pipe body (41).

6. The surface passivation device for galvanized pipe production according to claim 1, wherein: 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 of an inverted funnel structure. An exhaust pipe (23) is provided at the upper end of the mist suction hood (2). A first mist catcher is installed at the inlet end of the exhaust pipe (23). A vacuum pump is provided on the exhaust pipe (23). The outlet end of the exhaust pipe (23) is connected to an external waste gas collection tank.

7. The surface passivation device for galvanized pipe production according to claim 1, characterized in that: The passivation liquid filtration assembly (7) includes a lower box body (71) and a collection hood (72). The collection hood (72) is of a funnel-shaped structure. The upper end of the collection hood (72) is installed on the lower end of the upper box body (1). The lower end of the collection hood (72) is fixedly installed on the upper end of the lower box body (71) through a transition plate (73). The transition plate (73) is of 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 body (71). A third pipe body (75) is installed on the side wall of the lower box body (71), and the third pipe body (75) is connected to a storage tank (8). Sieve holes are evenly distributed on the sieve plate (74). Convex platforms (76) are respectively provided on both sides of one end of the sieve plate (74). A blocking plate (77) is installed at the other end of the sieve plate (74). Guide grooves (711) are respectively provided on both sides of the lower box body (71). The periphery of each convex platform (76) is slidably connected into a guide groove (711) to position the relative position between the sieve plate (74) and the lower box body (71), and one side of the blocking plate (77) can abut against and block the open end of the transition plate (73). A first sieve flow plate (78) is installed in the lower box body (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 body (71). A first gap is provided 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. The permanent magnet (79) is installed 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 barrier groove plates (710) are installed on the first sieve flow plate (78). The plurality of barrier groove plates (710) are evenly distributed along the first slope, and each barrier groove plate (710) has an inverted L-shaped structure.

8. The surface passivation device for galvanized pipe production according to claim 7, characterized in that: A first flow retarder plate (714) and a second flow retarder plate (712) are respectively arranged in the lower box body (71). The first flow retarder plate (714) and the second flow retarder plate (712) are arranged in parallel. The two sides of the first flow retarder plate (714) and the second flow retarder plate (712) are respectively fixedly connected to the inner walls of the two sides of the lower box body (71). The lower end of the first flow retarder plate (714) is fixedly connected to the bottom of the lower box body (71). A second gap is provided between the upper end of the first flow retarder plate (714) and the first sieve flow plate (78). The first flow retarder plate (714) is located between the first gap and the second flow retarder plate (712). The upper end of the second flow retarder plate (712) abuts against the lower end of the first sieve flow plate (78). A third gap is provided between the lower end of the second flow retarder plate (712) and the bottom of the lower box body (71). A second sieve flow plate (713) is installed on one side of the second flow retarder plate (712). The first flow retarder plate (714) is located on the other side of the second flow retarder plate (712). One end and both sides of the second sieve flow plate (713) are fixedly connected to the bottom of the lower box body (71). An overflow gap is provided at one end of the second sieve flow plate (713) close to the second flow retarder plate (712). The first gap is sequentially connected to the overflow gap through the second gap and the third 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 oppositely. Sieve flow grooves (7132) are evenly distributed along the second slope on the second sieve flow plate (713). The third pipe body (75) is located at one end of the second sieve flow plate (713) away from the second flow retarder plate (712).

9. The surface passivation device for galvanized pipe production according to claim 7, characterized in that: A drain assembly (9) is further arranged in the lower box body (71). The drain assembly (9) includes a fourth pipe body (91). The fourth pipe body (91) has an L-shaped structure. The periphery of the fourth pipe body (91) is fixedly installed on the lower box body (71). The first end of the fourth pipe body (91) is communicated with the storage tank (8). A floating head (92) is arranged at the second end of the fourth pipe body (91). The floating head (92) can float in the passivation liquid. A first through hole is provided in the middle of the floating part. A fifth pipe body (93) is installed in the first through hole. The inner circle of 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). A retaining ring (95) is installed at the lower end of the fifth pipe body (93). The upper end of the retaining 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).

10. The surface passivation device for galvanized pipe production according to claim 9, characterized in that: The storage tank (8) includes a tank body (81) and a transverse plate (82). A transverse plate (82) is arranged in the middle of the tank body (81). The transverse plate (82) divides the interior of the tank body (81) into an upper storage cavity (83) and a lower storage cavity (84). A second through hole is provided in the middle of the transverse plate (82), and a sixth pipe body (85) is installed in the second through hole. The sixth pipe body (85) is located in the lower storage cavity (84), and a one-way valve is installed 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 communicated with the spraying assembly (3), and the eighth pipe body (87) is communicated with the third pipe body (75). A ninth pipe body (88) is arranged in the upper storage cavity (83), and one end of the ninth pipe body (88) is communicated with the fourth pipe body (91). A third through hole is provided in the transverse plate (82), and a tenth pipe body (89) is installed 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 installed at the upper end of the tenth pipe body (89). A packing pipe (811) is installed at the upper end of the tank body (81), and the packing pipe (811) is communicated with the upper storage cavity (83). An observable liquid level gauge (812) is arranged on the side wall of the tank body (81), and the observable liquid level gauge (812) is used to observe the liquid level in the upper storage cavity (83).

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