A galvanized pipe surface passivation equipment

Abstract

The application relates to the technical field of galvanized pipe processing, and discloses a galvanized pipe surface passivation equipment, which comprises a rotating mechanism, the bottom end of a connecting mechanism is provided with the rotating mechanism, the middle part of the rotating mechanism is movably connected with a pipe fitting, the rotating mechanism comprises a rotating piece, a fixing piece and a clamping assembly, the rotating piece is movably sleeved with the front end of the clamping assembly through a rotating hole, and the fixing piece is movably connected with the rear end of the clamping assembly through a fixing groove. When the rotating mechanism drives the pipe fitting to move horizontally on a working track, the rotating piece is self-rotated under the meshing action of the working track, the clamping assembly is synchronously rotated, the clamping assembly is moved along the fixing groove of the fixing piece, and the clamping assembly is displaced relative to the pipe fitting under the limiting action of the fixing piece, so that the clamping assembly intermittently clamps the pipe fitting, the clamped part of the pipe fitting is contacted with passivation liquid, the pipe fitting is passivated in all directions, and the passivation quality is improved.

Description

Technical Field

[0001] This application relates to the field of galvanized pipe processing technology, and in particular to a passivation device for galvanized pipe surface. Background Technology

[0002] Galvanized pipe generally refers to galvanized steel pipe, which has a wide range of uses. It is widely used not only in fire protection, power and highways, but also in manufacturing industries such as construction, machinery, coal mining, chemical industry, electricity, railway vehicles, automobile industry, highways, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, mining machinery, and greenhouse construction.

[0003] Galvanizing passivation is a film-forming process used in the galvanizing process. It is an essential step in the production of galvanized pipes, aiming to form a dense passivation film on the surface of the galvanized layer through chemical or electrochemical methods to enhance corrosion resistance, oxidation resistance, and appearance quality. The passivation equipment typically includes a pretreatment tank, a passivation tank, and a washing tank. First, the cleaning agent in the pretreatment tank removes oil, dust, and other impurities from the surface of the galvanized pipe. Second, the passivation solution in the passivation tank passivates the surface of the galvanized pipe, forming a film on the zinc layer. Finally, the washing tank thoroughly removes any remaining chemicals from the surface of the galvanized pipe.

[0004] However, existing galvanized pipe surface passivation equipment still has some defects in use: In actual use, the passivation equipment fixes the galvanized pipe by clamping the outer wall of the galvanized pipe, which means that the clamped part of the galvanized pipe cannot be passivated, resulting in passivation dead corners and affecting the quality of the finished galvanized pipe. Summary of the Invention

[0005] This application proposes a passivation device for galvanized pipe surfaces, which has the advantages of using a rotating mechanism to clamp the pipe fittings intermittently, thereby achieving all-round passivation of the pipe fittings and improving the passivation quality, in order to solve the problem of not being able to fully passivate the clamped parts of the pipe fittings.

[0006] To achieve the above objectives, this application adopts the following technical solution: a passivation device for galvanized pipe surfaces, comprising:

[0007] A working mechanism, comprising a working pool and working rails, wherein two working rails are fixedly connected to the bottom of the inner interior of the working pool;

[0008] The conveying mechanism and the connecting mechanism are provided. Two conveying mechanisms are provided above the working pool, and several connecting mechanisms are provided at the bottom of the conveying mechanisms.

[0009] The rotating mechanism is movably connected with the pipe in the middle part, and comprises a rotating part, a fixed part and a clamping assembly. The outer wall of the fixed part is fixedly connected with the bottom end of the connecting mechanism, and the inner wall of the fixed part is movably sleeved with the rotating part. A rotating hole is formed in the middle part of the rotating part, and the rotating part is movably sleeved with the front end of the clamping assembly through the rotating hole. A fixed groove is formed in the middle part of the inner wall of the fixed part, and the fixed part is movably connected with the rear end of the clamping assembly through the fixed groove. The rotating part is rotated by the working track, and the clamping assembly intermittently clamps the pipe.

[0010] Further, the left and right top ends of the working track are provided with tooth grooves, and the middle top end of the working track is provided with a working groove.

[0011] Further, the working mechanism further comprises:

[0012] The rear end of the working pool is movably connected with the liquid inlet pipe;

[0013] The front end of the working pool is movably connected with the liquid outlet pipe.

[0014] Further, the two conveying mechanisms correspond to the two working tracks one by one, so as to provide conditions for horizontal movement of the rotating mechanism. The conveying mechanism comprises:

[0015] The bottom end of the conveying track is provided with a track groove, and the shape of the track groove is T-shaped;

[0016] The conveying track is movably sleeved with the conveying chain in the track groove.

[0017] Further, the connecting mechanisms on different conveying mechanisms correspond to each other, so as to provide conditions for vertical movement of the rotating mechanism. The connecting mechanism comprises:

[0018] The shape of the suspension part is I-shaped. The upper half of the suspension part is movably connected with the track groove of the conveying track, and the top end of the suspension part is fixedly connected with the outer wall of the conveying chain;

[0019] The lower half of the suspension part is movably connected with the top end of the connecting part;

[0020] The bottom end of the connecting part is fixedly connected with the top end of the hydraulic cylinder;

[0021] The bottom end of the hydraulic cylinder is movably sleeved with the top end of the hydraulic rod.

[0022] Further, the rotating member is composed of two different size rings, and the diameter of the middle outer ring of the rotating member is smaller than that of the two side outer rings, the two side outer walls of the rotating member are in the shape of a gear, and the two side outer walls of the rotating member are engaged with the toothed groove of the working track, the middle surface of the rotating member is smooth, and the middle part of the rotating member is located above the working groove of the working track.

[0023] Further, the top end of the fixing member is fixedly connected with the bottom end of the connecting mechanism, and the bottom end of the fixing member corresponds to the working groove of the working track, the outer ring of the fixing member is in the shape of a circle in cross section, and the inner ring of the fixing member is in the shape of a circle with two sides protruding in cross section, and the protruding position is located in the middle part of the fixing member, and the included angle formed by the protruding position of the fixing member is less than 60°.

[0024] Further, the fixing member comprises:

[0025] A fixing ring, four fixing holes are formed in the fixing ring, and the four fixing holes are located at positions forming included angles of 60°, 120°, 240° and 300° with the protruding position;

[0026] A fixing block, the fixing ring is movably sleeved with the fixing block through the fixing hole;

[0027] A fixing bolt, the outer wall of the fixing block is threadedly connected with the outer wall of the fixing ring through the fixing bolt.

[0028] Further, the number of the clamping assemblies is six, and the clamping assemblies are uniformly arranged around the rotating member, and the clamping assembly comprises:

[0029] A clamping body, the shape of the clamping body is T-shaped;

[0030] A clamping head, the front end of the clamping body is fixedly connected with the clamping head, the inside of the clamping head is provided with a spraying groove, and the wall surface of the clamping head not connected with the clamping body is provided with a plurality of spraying holes, the spraying holes provided on the wall surface of the clamping head abutting against the pipe are horizontally arranged, and the remaining spraying holes are obliquely arranged;

[0031] A fixing plate, the inside of the clamping body close to the clamping head is provided with a movable groove, and the movable groove of the clamping body movably sleeves with the fixing plate, and the fixing plate is fixedly clamped in the rotating hole of the rotating member;

[0032] A movable film, the movable film is movably arranged in the movable groove of the clamping body, one end of the movable film is fixedly connected with the clamping head, and the other end of the movable film is fixedly connected with the fixing plate.

[0033] Further, the clamping body comprises:

[0034] A movable rod, the movable rod is arranged at the front end, and the movable rod movably sleeves with the rotating hole of the rotating member;

[0035] The movable pad is located at the rear end and is movably engaged with the fixing groove of the fixing member.

[0036] The beneficial effects of this invention are as follows:

[0037] This application provides a passivation device for galvanized pipe surfaces. By movably engaging both ends of the pipe fitting with a rotating mechanism, the rotating mechanism consists of a rotating component, a fixed component, and a clamping assembly. When the rotating mechanism drives the pipe fitting to move horizontally on the working track, the rotating component rotates due to the meshing action of the working track, synchronously driving the clamping assembly to rotate. This causes the clamping assembly to move along the fixing groove of the fixed component and to be displaced relative to the pipe fitting due to the limiting action of the fixed component. Thus, the clamping assembly intermittently clamps the pipe fitting, facilitating contact between the passivation liquid and the clamped part of the pipe fitting, achieving all-round passivation of the pipe fitting, and improving the passivation quality.

[0038] The clamping assembly consists of a clamping body, a clamping head, a fixed plate, and a movable diaphragm. The clamping head has several spray holes. When the clamping body moves away from the pipe under the action of the rotating and fixed parts, the clamping head disengages from the pipe. The movable diaphragm is compressed by the clamping head and the fixed plate, causing the clamping head to spray passivating liquid. This passivating liquid thoroughly rinses the clamped part of the pipe, further achieving all-round passivation of the pipe and improving the passivation quality.

[0039] Through the meshing design between the rotating component and the working track, and the clamping design between the clamping assembly and the pipe, when the pipe moves horizontally from the outlet pipe to the inlet pipe, and the passivating liquid moves from the inlet pipe to the outlet pipe, the rotating component rotates under the action of the working track, and drives the pipe to rotate. This causes the pipe to continuously change the part that first contacts the passivating liquid, promoting uniform contact of the pipe surface with the passivating liquid. This prevents the pipe from having no rotation effect, which would result in only one side of the wall contacting the passivating liquid first, thereby enhancing the uniformity of passivation on the pipe surface and further improving the passivation quality. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0041] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0042] Figure 2 This is a frontal cross-sectional three-dimensional structural diagram of the entire invention;

[0043] Figure 3In this invention Figure 2 Enlarged structural diagram at point A;

[0044] Figure 4 In this invention Figure 3 Enlarged structural diagram at point B;

[0045] Figure 5 This is a partially enlarged structural diagram of the connecting mechanism and the rotating mechanism in this invention;

[0046] Figure 6 This is a side view cross-sectional perspective view of the overall three-dimensional structure of the present invention;

[0047] Figure 7 In this invention Figure 6 Enlarged structural diagram at point C;

[0048] Figure 8 In this invention Figure 6 Enlarged structural diagram at point D;

[0049] Figure 9 This is a frontal cross-sectional three-dimensional structural diagram of the working mechanism in this invention;

[0050] Figure 10 This is a three-dimensional structural diagram of the conveying mechanism, connecting mechanism, and rotating mechanism in this invention;

[0051] Figure 11 This is a three-dimensional structural diagram of the connecting mechanism in this invention;

[0052] Figure 12 This is a three-dimensional structural diagram of the rotating mechanism in this invention;

[0053] Figure 13 This is a top cross-sectional three-dimensional structural diagram of the rotating mechanism in this invention;

[0054] Figure 14 In this invention Figure 13 Enlarged structural diagram at point E;

[0055] Figure 15 This is a three-dimensional structural diagram of the rotating and fixing components in this invention when they are separated.

[0056] Figure 16 This is a cross-sectional three-dimensional structural view of the fastener in this invention;

[0057] Figure 17 This is a three-dimensional structural diagram of a set of clamping components in this invention.

[0058] In the figure: 1, working mechanism; 11, working pool; 12, liquid inlet pipe; 13, liquid outlet pipe; 14, working track; 2, pipe; 3, conveying mechanism; 31, conveying track; 32, conveying chain; 4, connecting mechanism; 41, suspension; 42, connecting piece; 43, hydraulic cylinder; 44, hydraulic rod; 5, rotating mechanism; 51, rotating piece; 52, fixed piece; 6, clamping assembly; 61, clamping body; 611, movable rod; 612, movable pad; 62, clamping head; 63, fixed plate; 64, movable film; 7, fixed ring; 8, fixed block; 9, fixed bolt. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0060] Embodiment one, a galvanized pipe surface passivation equipment, comprising a working pool 11, such as Figures 1-2 , Figure 6 The inside of the working pool 11 is provided with passivation liquid, which can passivate the pipe 2 immersed in the working pool 11. The inside of the working pool 11 is provided with a temperature control system, such as an electric heating pipe and a heat exchanger, to maintain the temperature of the passivation liquid, which is usually set at 20-50℃. The inside of the working pool 11 is also provided with a PH monitor, which can adjust the pH value of the passivation liquid in real time. The rear end of the working pool 11 is fixedly connected with a liquid inlet pipe 12 at the middle, and the front end of the working pool 11 is fixedly connected with a liquid outlet pipe 13 at the bottom, so that the passivation liquid can enter the working pool 11 through the liquid inlet pipe 12 and be discharged from the working pool 11 through the liquid outlet pipe 13, effectively limiting the movement path of the passivation liquid in the working pool 11, i.e. the movement path of the passivation liquid is from the liquid inlet pipe 12 to the liquid outlet pipe 13, so that there is a continuous supply of passivation liquid in the working pool 11, effectively ensuring the concentration of the passivation liquid in the working pool 11, thereby ensuring that the passivation liquid can fully passivate the pipe 2, such as Figure 1 and Figure 9 The inside of the working pool 11 is fixedly connected with two working tracks 14 at the bottom, and the two working tracks 14 are symmetrically arranged, which provide conditions for driving the rotating mechanism 5 to rotate. Specifically, the left and right top ends of the working track 14 are provided with tooth grooves, which are positionally corresponding to the rotating piece 51. The middle top end of the working track 14 is provided with a working groove, which is positionally corresponding to the fixed piece 52, so that the working track 14 can effectively act on the rotating piece 51 and the fixed piece 52. In summary, the working pool 11, the liquid inlet pipe 12, the liquid outlet pipe 13 and the working track 14 constitute the working mechanism 1.

[0061] As Figures 1-2、 Figure 6 、 Figure 10 , the top of the work pool 11 is provided with two conveying mechanisms 3, and the two conveying mechanisms 3 correspond to the two work tracks 14 one by one, for providing conditions for horizontal movement of the rotating mechanism 5, the conveying mechanism 3 comprises a conveying track 31 and a conveying chain 32, as shown in Figure 6 、 Figure 8 , the length of the conveying track 31 can cover the entire passivation process, that is, the conveying track 31 is arranged above the pretreatment, passivation, water washing and other devices, so as to realize the pipeline operation of the pipe fitting 2, the top end of the conveying track 31 is fixedly connected with a concave-shaped connecting block, which can help the conveying track 31 to be stably installed on the support member (such as a wall), the bottom end of the conveying track 31 is provided with a track groove, and the track groove is in the shape of T, which can help the connecting mechanism 4 to be stably connected on the conveying track 31, the conveying chain 32 is movably sleeved in the track groove of the conveying track 31, and the conveying chain 32 can move horizontally under control, thereby helping to drive the connecting mechanism 4, the rotating mechanism 5 and the pipe fitting 2 to move horizontally.

[0062] as shown in Figures 1-2 、 Figure 6 、 Figure 10 , the bottom end of the conveying mechanism 3 is provided with a plurality of connecting mechanisms 4, and the connecting mechanisms 4 located on different conveying mechanisms 3 correspond to each other in pairs, for providing conditions for vertical movement of the rotating mechanism 5, the connecting mechanism 4 comprises a hanging piece 41, a connecting piece 42, a hydraulic cylinder 43 and a hydraulic rod 44, as shown in Figure 11 , the shape of the hanging piece 41 is in the shape of an I-shaped, the upper half of the hanging piece 41 is movably clamped with the track groove of the conveying track 31, and the top end of the hanging piece 41 is fixedly connected with the outer wall of the conveying chain 32, when the conveying chain 32 moves horizontally, the conveying chain 32 can drive the hanging piece 41 to move synchronously, it should be noted that the hanging piece 41 in contact with the inner wall of the conveying track 31 is provided with a roller, which effectively reduces the resistance of the hanging piece 41 moving in the track groove of the conveying track 31, the lower half of the hanging piece 41 is movably connected with the top end of the connecting piece 42, and the hanging piece 41 and the connecting piece 42 are connected by long bolts, which facilitates the connecting piece 42, the hydraulic cylinder 43 and the hydraulic rod 44 to be disassembled from the hanging piece 41 for maintenance, the bottom end of the connecting piece 42 is fixedly connected with the top end of the hydraulic cylinder 43, and the bottom end of the hydraulic cylinder 43 is movably sleeved with the top end of the hydraulic rod 44, when the hydraulic cylinder 43 is started, the hydraulic cylinder 43 can push the hydraulic rod 44 to move up and down, thereby helping to drive the rotating mechanism 5 to move vertically.

[0063] as shown in Figures 1-7 、 Figure 10 、 Figures 12-16The bottom end of the connecting mechanism 4 is provided with a rotating mechanism 5, the middle part of the rotating mechanism 5 is movably clamped with the pipe 2, which is used for providing assistance for clamping the pipe 2, the rotating mechanism 5 comprises a rotating piece 51, a fixed piece 52 and a clamping assembly 6, such as Figure 12 The outer wall of the fixed piece 52 is fixedly connected with the bottom end of the connecting mechanism 4, the inner wall of the fixed piece 52 is movably sleeved with the rotating piece 51, the middle part of the rotating piece 51 is provided with a rotating hole, the rotating piece 51 is movably sleeved with the front end of the clamping assembly 6 through the rotating hole, the middle part of the inner wall of the fixed piece 52 is provided with a fixed slot, the fixed piece 52 is movably clamped with the rear end of the clamping assembly 6 through the fixed slot, the number of the clamping assembly 6 is six, and the clamping assembly 6 is evenly arranged around the rotating piece 51, so that the rotating piece 51 is rotated by the working track 14, the clamping assembly 6 intermittently clamps the pipe 2, so that the passivation liquid contacts with the clamped part of the pipe 2, the pipe 2 is passivated in all directions, the passivation dead angle is prevented, and the passivation quality is improved, and specifically:

[0064] As shown in Figure 15 The rotating piece 51 is composed of two different size rings, the middle part of the rotating piece 51 is smaller in diameter than the two sides of the rotating piece 51, which can help the fixed piece 52 to be stably sleeved on the rotating piece 51, the two sides of the rotating piece 51 are in the shape of gear, the two sides of the rotating piece 51 are engaged with the gear slot of the working track 14, the middle part of the rotating piece 51 is smooth, and the middle part of the rotating piece 51 is above the working groove of the working track 14, so that when the rotating piece 51 is horizontally moved by the fixed piece 52, the rotating piece 51 can be rotated by the engagement of the working track 14, thereby helping the clamping assembly 6 to intermittently clamp the pipe 2.

[0065] As shown in Figure 15The top end of the fixing member 52 is fixedly connected with the bottom end of the connecting mechanism 4, and the bottom end of the fixing member 52 corresponds to the working groove of the working track 14, so that the fixing member 52 is stably fixed by the connecting mechanism 4. The outer circle of the fixing member 52 is circular in cross-sectional shape, and the inner circle of the fixing member 52 is circular in cross-sectional shape with two sides protruding outward, and the protruding position is located in the middle of the fixing member 52. When the clamping assembly 6 rotates with the rotating member 51, the clamping assembly 6 will move due to the shape of the inner circle of the fixing member 52, that is, the clamping assembly 6 effectively clamps the pipe 2 when the clamping assembly 6 is not located at the protruding position, and the clamping assembly 6 does not clamp the pipe 2 when the clamping assembly 6 is located at the protruding position, so as to realize intermittent clamping of the pipe 2 by the clamping assembly 6, facilitate contact between the passivation liquid and the clamped part of the pipe 2, realize all-around passivation of the pipe 2, improve the passivation quality, and the angle formed by the protruding position of the fixing member 52 is less than 60°, and the angle between the two clamping assemblies 6 is 60°, so as to effectively ensure that four clamping assemblies 6 always clamp the pipe 2, thereby providing help for stably clamping the pipe 2. Fine holes can be formed on the fixing member 52 to facilitate timely discharge of the passivation liquid between the rotating member 51 and the fixing member 52.

[0066] As Figures 15-16 , the fixing member 52 comprises a fixing ring 7, a fixing block 8 and a fixing bolt 9. Four fixing holes are formed in the fixing ring 7, and the four fixing holes are respectively located at positions forming angles of 60°, 120°, 240° and 300° with the protruding position, and cooperate with the two protruding positions, so as to control the six clamping assemblies 6, thereby facilitating installation and disassembly of the pipe 2. The fixing ring 7 is movably sleeved with the fixing block 8 through the fixing holes, and the outer wall of the fixing block 8 is threadedly connected with the outer wall of the fixing ring 7 through the fixing bolt 9. When the fixing bolt 9 is disassembled, the fixing block 8 can move in the fixing hole of the fixing ring 7, thereby driving the clamping assembly 6 in it to stop clamping the pipe 2, so as to facilitate installation or disassembly of the pipe 2 on the rotating mechanism 5. When the fixing bolt 9 is installed, the fixing block 8 is fixed on the fixing ring 7, so that four of the six clamping assemblies 6 can clamp the pipe 2 at all times, thereby effectively ensuring the stability of the pipe 2 during movement.

[0067] In example two, on the basis of example one, the clamping assembly 6 comprises a clamping body 61, a clamping head 62, a fixing plate 63 and a movable film 64, specifically:

[0068] As Figures 2-5 , Figures 13-14 , Figure 17The shape of the clamping body 61 is T-shaped, and the clamping body 61 is composed of a movable rod 611 and a movable pad 612. The movable rod 611 is arranged at the front end and movably sleeved with the rotating hole of the rotating piece 51. The movable pad 612 is arranged at the rear end and movably clamped with the fixed groove of the fixed piece 52. The movable rod 611 is made of hard material, and the movable pad 612 is made of flexible material. The shape of the movable rod 611 and the movable pad 612 can make the clamping body 61 stably connected with the rotating piece 51 and the fixed piece 52, ensure the clamping stability of the clamping body 61 to the pipe fitting 2, and effectively enhance the adaptability of the clamping body 61 to the fixed piece 52, which is helpful for stable movement in the fixed groove of the fixed piece 52. It should be noted that if the movable pad 612 is made of rubber material, fluororubber or EPDM and other chemical-resistant materials are preferred.

[0069] As Figures 2-5 , Figures 13-14 , Figure 17 The front end of the clamping body 61 is fixedly connected with a clamping head 62. The inside of the clamping head 62 is provided with a spraying groove, and the wall surface of the clamping head 62 which is not connected with the clamping body 61 is provided with a plurality of spraying holes. The spraying holes arranged on the wall surface of the clamping head 62 which is in contact with the pipe fitting 2 are horizontally arranged, and the remaining spraying holes are obliquely arranged, which can effectively spray passivation liquid on the surface of the pipe fitting 2 corresponding to the clamping assembly 6, further realize the all-round passivation of the pipe fitting 2, and improve the passivation quality.

[0070] As Figures 2-5 , Figures 13-14 , Figure 17 An active groove is arranged in the clamping body 61 close to the clamping head 62, and a fixed plate 63 is movably sleeved in the active groove of the clamping body 61. The fixed plate 63 is fixedly clamped in the rotating hole of the rotating piece 51. When the clamping assembly 6 moves away from the pipe fitting 2, the distance between the clamping head 62 and the fixed plate 63 is shortened. When the clamping assembly 6 moves close to the pipe fitting 2, the distance between the clamping head 62 and the fixed plate 63 is lengthened, thereby providing power for the compression and stretching of the active film 64.

[0071] As Figures 2-5 , Figures 13-14 , Figure 17 The active film 64 is movably arranged in the active groove of the clamping body 61, and one end of the active film 64 is fixedly connected with the clamping head 62, and the other end of the active film 64 is fixedly connected with the fixed plate 63. When the active film 64 is in a stretched state, some passivation liquid can enter the active film 64 through the spraying holes. When the active film 64 is in a compressed state, the compression force acting on the active film 64 effectively sprays the passivation liquid in the active film 64, thereby realizing sufficient passivation of the surface of the pipe fitting 2. It should be noted that the active film 64 is made of a flexible chemical-resistant material. If the active film 64 is made of rubber material, fluororubber or EPDM and other chemical-resistant materials are preferred.

[0072] The working principle of the method for using the present application is as follows:

[0073] When the pipe 2 is installed, first, the four clamping assemblies 6 are moved into the fixing grooves on the fixing block 8, the other two clamping assemblies 6 are moved into the fixing grooves in the outer convex position, then the fixing block 8 drives the clamping assemblies 6 to move outward along the fixing holes of the fixing ring 7, then the end of the pipe 2 is sleeved into the rotating mechanism 5, then the fixing block 8 drives the clamping assemblies 6 to move inward along the fixing holes of the fixing ring 7, finally, the fixing block 8 is stably fixed on the fixing ring 7 by the fixing bolts 9, so that the clamping assemblies 6 stably clamp the outer wall of the pipe 2, if the pipe 2 is disassembled, the above operation is implemented, only the pipe 2 is installed instead of the pipe 2 is disassembled.

[0074] When the pipe 2 is passivated, first, the pipe 2 is moved to the upper side of the working pool 11 by the conveying chain 32, then the connecting mechanism 4 is started, the rotating mechanism 5 drives the pipe 2 to move downward into the working pool 11, the rotating part 51 is arranged on the working groove of the working track 14, the fixing part 52 is engaged with the tooth groove of the working track 14, then the conveying chain 32 drives the rotating mechanism 5 to move horizontally, the rotating mechanism 5 moves from the liquid outlet pipe 13 to the liquid inlet pipe 12, in this process, the rotating part 51 is rotated by the engagement with the working track 14, the clamping assemblies 6 are synchronously driven to rotate because the front end of the clamping assemblies 6 is limited by the rotating hole of the rotating part 51, the clamping assemblies 6 are intermittently clamped to the pipe 2 because the rear end of the clamping assemblies 6 is limited by the fixing groove of the fixing part 52, specifically, the clamping assemblies 6 are away from the pipe 2 and do not clamp the pipe 2 when the clamping assemblies 6 move to the outer convex position of the fixing part 52, the clamping assemblies 6 are close to the pipe 2 and clamp the pipe 2 when the clamping assemblies 6 do not move to the outer convex position of the fixing part 52, so as to help the passivation liquid in the working pool 11 to contact the clamped part of the pipe 2, avoid the existence of the passivation four corners, realize the all-around passivation of the pipe 2, and improve the passivation quality.

[0075] At the same time, in the process that the clamping assemblies 6 clamp the pipe 2, the movable film 64 is stretched to make the passivation liquid enter the movable film 64 through the injection hole of the clamping head 62, so as to be used subsequently, in the process that the clamping assemblies 6 do not clamp the pipe 2, the movable film 64 is compressed to make the passivation liquid spray out through the injection hole of the clamping head 62, and the clamped part of the pipe 2 is fully washed, further realizing the all-around passivation of the pipe 2, and improving the passivation quality.

[0076] When the pipe 2 moves from the outlet pipe 13 to the inlet pipe 12, the passivation liquid moves from the inlet pipe 12 to the outlet pipe 13, and at the same time, because there are always four clamping assemblies 6 on the rotating member 51 clamping the pipe 2, the rotating member 51 rotates synchronously with the pipe 2 in the self-rotation process, so that the pipe 2 continuously changes the part first contacted with the passivation liquid, promotes the pipe 2 to uniformly contact the passivation liquid, prevents the pipe 2 from rotating and only one side wall first contacted with the passivation liquid, thereby enhancing the uniformity of the surface passivation of the pipe 2 and further improving the passivation quality.

[0077] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A passivation device for galvanized pipe surface, characterized in that, include: The working mechanism (1) includes a working pool (11) and a working track (14). The bottom of the working pool (11) is fixedly connected to two working tracks (14). The conveying mechanism (3) and the connecting mechanism (4) are provided above the working pool (11), and several connecting mechanisms (4) are provided at the bottom of the conveying mechanism (3). A rotating mechanism (5) is provided, with a pipe fitting (2) movably engaged in the middle of the rotating mechanism (5). The rotating mechanism (5) includes a rotating component (51), a fixing component (52), and a clamping assembly (6). The outer wall of the fixing component (52) is fixedly connected to the bottom end of the connecting mechanism (4), and the inner wall of the fixing component (52) is movably sleeved with the rotating component (51). A rotating hole is provided in the middle of the rotating component (51), and the rotating component (51) is movably sleeved with the front end of the clamping assembly (6) through the rotating hole. A fixing groove is provided in the middle of the inner wall of the fixing component (52), and the fixing component (52) is connected with the rear end of the clamping assembly (6) through the fixing groove. The clamping components (6) are arranged in a movable snap-fit ​​configuration. There are six clamping components (6) and they are evenly arranged around the rotating component (51). The rotating component (51) is rotated by the working track (14) so ​​that the clamping components (6) can intermittently clamp the pipe (2). The fixing component (52) is stably sleeved on the rotating component (51). The outer walls of the rotating component (51) are gear-shaped, and the outer walls of the rotating component (51) mesh with the tooth grooves of the working track (14). The outer ring cross-section of the fixing component (52) is circular, and the inner ring cross-section of the fixing component (52) is a circle with two convex sides, and the convex position is located in the middle of the fixing component (52).

2. The galvanized pipe surface passivation equipment according to claim 1, characterized in that, The top of the left and right sides of the working track (14) are provided with toothed grooves, and the top of the middle part of the working track (14) is provided with a working groove.

3. The galvanized pipe surface passivation equipment according to claim 1, characterized in that, The working mechanism (1) also includes: The liquid inlet pipe (12) is fixedly connected to the middle of the rear end of the working pool (11). The bottom end of the working pool (11) is fixedly connected to the outlet pipe (13).

4. The galvanized pipe surface passivation equipment according to claim 1, characterized in that, The two conveying mechanisms (3) correspond one-to-one with the two working tracks (14) to provide conditions for the horizontal movement of the rotating mechanism (5). The conveying mechanism (3) includes: The conveying track (31) has a track groove at its bottom end, and the track groove is T-shaped. The conveyor chain (32) is movably sleeved in the track groove of the conveyor track (31).

5. The galvanized pipe surface passivation equipment according to claim 4, characterized in that, The connecting mechanisms (4) located on different conveying mechanisms (3) are paired to provide conditions for the vertical movement of the rotating mechanism (5). The connecting mechanisms (4) include: The suspension component (41) is in the shape of an I-beam. The upper half of the suspension component (41) is movably engaged with the track groove of the conveying track (31), and the top of the suspension component (41) is fixedly connected to the outer wall of the conveying chain (32). The lower half of the suspension member (41) is movably connected to the top end of the connector (42); The bottom end of the connecting piece (42) is fixedly connected to the top end of the hydraulic cylinder (43); The bottom end of the hydraulic cylinder (43) is movably connected to the top end of the hydraulic rod (44).

6. The galvanized pipe surface passivation equipment according to claim 2, characterized in that, The rotating part (51) is composed of two different sizes of rings, and the diameter of the outer ring in the middle of the rotating part (51) is smaller than the diameter of the outer rings on both sides of the rotating part (51). The middle surface of the rotating part (51) is smooth, and the middle part of the rotating part (51) is located above the working groove of the working track (14).

7. The galvanized pipe surface passivation equipment according to claim 6, characterized in that, The top end of the fixing member (52) is fixedly connected to the bottom end of the connecting mechanism (4), and the bottom end of the fixing member (52) corresponds to the working groove of the working track (14). The included angle formed by the outward convex position of the fixing member (52) is less than 60°.

8. The galvanized pipe surface passivation equipment according to claim 7, characterized in that, The fastener (52) includes: The fixing ring (7) has four fixing holes, and the four fixing holes are respectively located at positions that form an angle of 60°, 120°, 240° and 300° with the outward convex position; The fixing block (8) is fitted with the fixing ring (7) through a fixing hole; The outer wall of the fixing block (8) and the outer wall of the fixing ring (7) are connected by a fixing bolt (9) thread.

9. The galvanized pipe surface passivation equipment according to claim 7, characterized in that, The clamping assembly (6) includes: Clamping body (61), wherein the clamping body (61) is T-shaped; The clamping head (62) is fixedly connected to the front end of the clamping body (61). The clamping head (62) has an internal spray groove and a number of spray holes are provided on the wall surface of the clamping head (62) that is not connected to the clamping body (61). The spray holes provided on the wall surface of the clamping head (62) that is in contact with the pipe fitting (2) are horizontally arranged, and the remaining spray holes are inclined. The fixed plate (63) has a movable groove in the clamping body (61) near the clamping head (62), and the fixed plate (63) is movably sleeved in the movable groove of the clamping body (61). The fixed plate (63) is fixedly snapped into the rotating hole of the rotating part (51). The movable membrane (64) is movably disposed in the movable groove of the clamping body (61), and one end of the movable membrane (64) is fixedly connected to the clamping head (62), and the other end of the movable membrane (64) is fixedly connected to the fixing plate (63).

10. The galvanized pipe surface passivation equipment according to claim 9, characterized in that, The clamping body (61) includes: Movable rod (611), the movable rod (611) is located at the front end, and the movable rod (611) is movably sleeved with the rotating hole of the rotating part (51); The movable pad (612) is located at the rear end and is movably engaged with the fixing groove of the fixing member (52).

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