A metal strip passivation device

Abstract

This utility model discloses a passivation device for metal strips, belonging to the field of metal strip processing technology. It includes a support platform with a passivation box and a cover on its top surface. A first partition is fixed at one end of the passivation box, and a second partition is fixed at the other end. Several liquid pipes are arranged between the first and second partitions. Several pulleys are located on the outer side of the first partition, and several limiting blocks are located on the outer side of the second partition. A first rotating rod and a second rotating rod are fixed to the inner sides of the pulleys and limiting blocks, respectively. Both the first and second rotating rods are fixed with a fixing cover. Several grooves are formed on the inner wall of the fixing cover. Several nozzles are connected to the bottom of the liquid pipes, and several semi-circular grooves are formed on the sides of both ends of the liquid pipes. A clamping rod is connected to the grooves via a spring. A gear and a drive assembly are provided on the side of the passivation box. A third rotating rod is fixed to the side of the gear. Adjacent pulleys are connected by an internal toothed belt. Using this device, several nozzles can be driven to continuously oscillate, ensuring uniform passivation and improving the passivation effect.

Description

Technical Field

[0001] This utility model relates to the field of metal strip processing technology, and in particular to a metal strip passivation device. Background Technology

[0002] After rolling, stamping or welding, metal strips (such as steel strips, copper strips, aluminum strips, stainless steel strips, etc.) are prone to residual active metal grains or micro-defects on their surface. When exposed to the environment, they will accelerate oxidation and corrosion, reducing product life and reliability. Therefore, passivation treatment has become a key process to improve its corrosion resistance, improve its surface condition and ensure the adhesion of subsequent coatings.

[0003] Existing metal strip passivation devices are mostly fixed sprayers. Although they can reduce the amount of chemical solution used, the static nozzles cannot cover the full width of the strip during dynamic operation. This easily leads to defects such as insufficient edge coverage and overspray in the center, which affects the passivation effect. Therefore, it is urgent to design a new type of metal strip passivation device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a metal strip passivation device to solve the problem that existing metal strip passivation devices are mostly fixed spray methods, which makes it difficult for static nozzles to cover the full width of the strip during dynamic operation, resulting in insufficient edge coverage and overspray in the center, thus affecting the passivation effect.

[0005] To solve the above technical problems, this utility model provides a metal strip passivation device, including a support platform, a passivation box on the top surface of the support platform, a box cover rotatably connected to the top of the passivation box and a first partition fixed at one end of its interior, a second partition fixed at the other end of its interior, and fixing blocks fixed at both ends of the second partition. The fixing blocks are connected to the passivation box by a first screw.

[0006] A plurality of liquid pipes are provided between the first partition and the second partition, and a plurality of pulleys are provided on the outer side of the first partition and a plurality of limiting blocks are provided on the outer side of the second partition. A first rotating rod and a second rotating rod are respectively fixed on the inner side of the pulleys and the limiting blocks. The first rotating rod and the second rotating rod pass through the first partition and the second partition respectively and are fixed with a fixing cover. A plurality of grooves are opened on the inner wall of the fixing cover. A plurality of evenly distributed nozzles are connected to the bottom of the plurality of liquid pipes, and a plurality of semi-circular grooves are opened on the sides of both ends of the nozzles. A clamping rod is connected to the grooves by a spring. The other end of the clamping rod is a semi-circular structure and is located in the semi-circular groove.

[0007] The passivation box is provided with a gear and a drive assembly for driving the gear to rotate on its side. A third rotating rod is fixed to the side of the gear. The other end of the third rotating rod passes through the passivation box and is fixed to the outside of the pulley. Adjacent pulleys are connected by an internal toothed belt.

[0008] As a further improvement to the above technical solution:

[0009] Optionally, the drive assembly includes a support block and a cylinder. The support block is fixed to the side of the passivation box, and the cylinder is fixed to the side of the support block away from the gear. Its piston rod passes through the support block and is connected to a moving rod. Several racks that mesh with the gear are fixed to the side of the moving rod close to the gear.

[0010] Optionally, a liquid tank is detachably fixed to the top surface inside the cover, and several of the nozzles are connected to the liquid tank via liquid pipes.

[0011] Optionally, the passivation box is equipped with a drain pipe on its side and an inclined plate is fixed on its inner bottom surface. The drain pipe is located at the bottom end of the inclined plate and a valve is also provided on its side.

[0012] Optionally, mounting blocks are fixed at both ends of the bottom surface of the passivation box, and the mounting blocks are connected to the support platform by a second screw.

[0013] Optionally, the passivation box has an inlet and an outlet on each side.

[0014] Optionally, a handle is installed on the side of the box cover.

[0015] Optionally, each of the four corners of the bottom surface of the support platform is fixed with a column.

[0016] In the metal strip passivation device provided by this utility model, a passivation box is provided on the top surface of the support platform. A box cover is rotatably connected to the top of the passivation box, and a first partition is fixed at one end of the box. A second partition is provided at the other end of the box. Fixing blocks are fixed on both sides of the second partition. The fixing blocks are connected to the passivation box by a first screw. A plurality of liquid pipes are provided between the first partition and the second partition. A plurality of pulleys are provided on the outside of the first partition, and a plurality of limiting blocks are provided on the outside of the second partition. A first rotating rod and a second rotating rod are respectively fixed on the inner sides of the pulleys and the limiting blocks. The first rotating rod and the second rotating rod pass through the first partition and the second partition, respectively. The plate is fixed with a fixing cover. The inner wall of the fixing cover has several grooves. Several liquid pipes are connected to several evenly distributed nozzles at their bottoms, and several semi-circular grooves are opened on both sides of each nozzle. A clamping rod is connected to the groove by a spring. The other end of the clamping rod is a semi-circular structure and is located in the semi-circular groove. The passivation box is provided with a gear and a drive assembly for driving the gear to rotate. A third rotating rod is fixed to the side of the gear. The other end of the third rotating rod passes through the passivation box and is fixed to the outside of the pulley. Adjacent pulleys are connected by an internal toothed belt. Using this device, several nozzles can be driven to swing left and right continuously to ensure uniform passivation and improve the passivation effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the metal strip passivation device provided by this utility model;

[0018] Figure 2 This is a top view of the metal strip passivation device provided by this utility model;

[0019] Figure 3 yes Figure 2 Sectional view of AA;

[0020] Figure 4 yes Figure 3 Enlarged view of B in the middle;

[0021] Figure 5 This is a partial structural diagram of the metal strip passivation device provided by this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] This utility model provides a metal strip passivation device, the structure of which is as follows: Figures 1-5As shown, the device includes a support platform 1, a passivation box 2 on the top surface of the support platform 1, a box cover 3 rotatably connected to the top of the passivation box 2, and a first partition 4 fixed to one end of the box cover 3, and a second partition 5 fixed to the other end of the box cover 3. Fixing blocks 6 are fixed to both sides of the second partition 5, and the fixing blocks 6 are connected to the passivation box 2 by first screws 7. Several liquid pipes 8 are provided between the first partition 4 and the second partition 5, and several pulleys 12 are provided on the outside of the first partition 4. Several limiting blocks 25 are provided on the outside of the second partition 5. A first rotating rod 9 and a second rotating rod 10 are fixed to the inner sides of the pulleys 12 and the limiting blocks 25, respectively. The first rotating rod 9 and the second rotating rod 10 pass through the first and second liquid pipes 8, respectively. A partition 4 and a second partition 5 are fixed with a fixing cover 11. The inner wall of the fixing cover 11 has several grooves 22. Several liquid pipes 8 are connected to several evenly distributed nozzles 20 at their bottoms, and several semi-circular grooves 21 are opened on both sides of each nozzle. A clamping rod 24 is connected to the groove 22 by a spring 23. The other end of the clamping rod 24 is a semi-circular structure and is located in the semi-circular groove 21. The passivation box 2 has a gear 15 and a drive assembly for driving the gear 15 to rotate on its side. A third rotating rod 14 is fixed to the side of the gear 15. The other end of the third rotating rod 14 passes through the passivation box 2 and is fixed to the outside of the pulley 12. Adjacent pulleys 12 are connected by an internal toothed belt 13. Using a metal strip passivation device, several nozzles 20 can be driven to swing left and right continuously to ensure uniform passivation and improve the passivation effect.

[0026] Specifically, the drive assembly includes a support block 16 and a cylinder 17. The support block 16 is fixed to the side of the passivation box 2, and the cylinder 17 is fixed to the side of the support block 16 away from the gear 15. Its piston rod passes through the support block 16 and is connected to a moving rod 18. Several racks 19 that mesh with the moving rod 18 are fixed to the side of the moving rod 18 near the gear 15.

[0027] Furthermore, a liquid tank 26 is detachably fixed to the top surface inside the cover 3, and several nozzles 20 are connected to the liquid tank 26 through liquid pipes.

[0028] Furthermore, a drain pipe 28 is installed on the side of the passivation box 2, and an inclined plate 27 is fixed on its inner bottom surface. The drain pipe 28 is located at the bottom end of the inclined surface of the inclined plate 27, and a valve 29 is also provided on its side.

[0029] Furthermore, mounting blocks 30 are fixed at both ends of the bottom surface of the passivation box 2, and the mounting blocks 30 are connected to the support platform 1 by the second screw 31.

[0030] Furthermore, the passivation box 2 has an inlet 32 ​​and an outlet 33 on both sides.

[0031] Furthermore, a handle 35 is installed on the side of the lid 3.

[0032] Furthermore, each of the four corners of the bottom surface of the support platform 1 is fixed with a column 34.

[0033] Operating procedures

[0034] Open the handle 35 of the box cover 3, and insert the metal strip to be treated into the passivation box 2 through the feed port 32. It passes horizontally through the channel between the first partition 4 and the second partition 5. Start the cylinder 17 to push the moving rod 18, and the rack 19 drives the gear 15 to rotate. The first pulley 12 is driven to rotate through the third rotating rod 14, and then all pulleys 12 are rotated synchronously through the internal tooth belt 13. The pulley 12 drives the fixed cover 11 through the first rotating rod 9, so that the liquid pipe 8 and the nozzle 20 attached to it rotate back and forth around the axis. The passivation liquid in the liquid tank 26 is transported to the rotating liquid pipe 8 through the pipeline, and is sprayed dynamically at full width and multiple angles through the nozzle 20 to the surface of the strip passing downward at a uniform speed. The treated strip is led out from the discharge port 33. After the process is completed, close the drain pipe 28 of valve 29 to collect waste liquid; when maintenance is required, loosen the first screw 7 to remove the second partition 5, press the lever 24 to compress the spring 23 to release the latch, and then pull the liquid pipe 8 horizontally to clean or replace the nozzle 20.

[0035] Beneficial effects

[0036] This device drives the liquid pipe 8 and nozzle 20 to rotate back and forth via pulley 12, causing the passivation liquid to form a three-dimensional mist field with no dead angles through centrifugal diffusion, completely eliminating the strip-shaped unevenness defect of traditional fixed spraying and ensuring the uniformity of the passivation film thickness on the material surface; the detachable second partition 5 structure facilitates quick maintenance of the internal transmission components and improves the overall utilization rate of the equipment; the combination of inclined plate 27 and drain pipe 28 realizes complete diversion and closed recovery of passivation liquid, preventing residual liquid from corroding the tank or contaminating the material; the internal toothed belt 13 synchronously drives to ensure that the speed of multiple nozzles 20 is consistent, avoiding fluctuations in treatment effect caused by speed difference.

[0037] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A metal strip passivation device, comprising a support platform (1), characterized in that, The support platform (1) has a passivation box (2) on its top surface. The top of the passivation box (2) is rotatably connected to a box cover (3) and a first partition (4) is fixed inside one end. A second partition (5) is provided inside the other end. Fixing blocks (6) are fixed on both sides of the second partition (5). The fixing blocks (6) are connected to the passivation box (2) by a first screw (7). A plurality of liquid pipes (8) are provided between the first partition (4) and the second partition (5), and a plurality of pulleys (12) are provided on the outside of the first partition (4), and a plurality of limiting blocks (25) are provided on the outside of the second partition (5). A first rotating rod (9) and a second rotating rod (10) are respectively fixed on the inner side of the pulleys (12) and the limiting blocks (25). The first rotating rod (9) and the second rotating rod (10) pass through the first partition (4) and the second partition (5) respectively and are fixed with a fixing cover (11). A plurality of grooves (22) are opened on the inner wall of the fixing cover (11). A plurality of evenly distributed nozzles (20) are connected to the bottom of the plurality of liquid pipes (8), and a plurality of semi-circular grooves (21) are opened on both sides of the nozzles. A clamping rod (24) is connected to the groove (22) by a spring (23). The other end of the clamping rod (24) is a semi-circular structure and is located in the semi-circular groove (21). The passivation box (2) is provided with a gear (15) and a drive assembly for driving the gear (15) to rotate. A third rotating rod (14) is fixed on the side of the gear (15). The other end of the third rotating rod (14) passes through the passivation box (2) and is fixed to the outside of the pulley (12). Two adjacent pulleys (12) are connected by an internal toothed belt (13).

2. The metal strip passivation device as described in claim 1, characterized in that, The drive assembly includes a support block (16) and a cylinder (17). The support block (16) is fixed to the side of the passivation box (2). The cylinder (17) is fixed to the side of the support block (16) away from the gear (15). Its piston rod passes through the support block (16) and is connected to a moving rod (18). The moving rod (18) has several racks (19) that mesh with it fixed to the side of the gear (15).

3. The metal strip passivation apparatus as described in claim 1, characterized in that, The liquid tank (26) is detachably fixed on the top surface inside the cover (3), and several of the nozzles (20) are connected to the liquid tank (26) through liquid pipes.

4. The metal strip passivation apparatus as described in claim 1, characterized in that, The passivation box (2) has a drain pipe (28) installed on its side and an inclined plate (27) fixed on its inner bottom surface. The drain pipe (28) is located at the bottom of the inclined surface of the inclined plate (27) and a valve (29) is also provided on its side.

5. The metal strip passivation apparatus as described in claim 1, characterized in that, The passivation box (2) has mounting blocks (30) fixed at both ends of its bottom surface. The mounting blocks (30) are connected to the support platform (1) by a second screw (31).

6. The metal strip passivation apparatus as described in claim 1, characterized in that, The passivation box (2) has an inlet (32) and an outlet (33) on both sides respectively.

7. The metal strip passivation apparatus as described in claim 1, characterized in that, A handle (35) is installed on the side of the box cover (3).

8. The metal strip passivation apparatus as described in claim 1, characterized in that, The support platform (1) has columns (34) fixed at the four corners of its bottom surface.

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