Nodular cast iron straight pipe surface coating production line
By designing protective components to block the splashing of high-temperature molten iron, the safety hazards in the production of ductile iron pipes have been solved, and safety and production efficiency have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-23
- Publication Date
- 2026-03-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the production of ductile iron pipes, the high-temperature molten iron rotates at high speed, causing splashing, which poses a safety hazard and affects the production progress. Existing protective measures are insufficient.
The design incorporates protective components, including a first tension shield, a second tension shield, a tension steel rope, a rocker arm, and a telescopic barrier, to block splashes of high-temperature molten iron and to collect solidified debris via a sliding plate and a fixed hook, thereby reducing safety hazards.
It effectively prevents high-temperature molten iron from splashing, reduces safety hazards, improves production progress and slag removal efficiency, and ensures the safety of workers.
Smart Images
Figure CN121649103A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of ductile iron pipe production technology, and in particular to a ductile iron straight pipe surface coating production line. Background Technology
[0002] Ductile iron pipes are widely used in water conservancy, water supply, drainage and other fields, and are mainly used in urban water supply and drainage, gas, sewage main pipes and other areas.
[0003] In the entire production line of ductile iron pipes, the coating process for the inner surface is often carried out using centrifugal casting, which requires several steps including molten iron preparation, mold pretreatment, centrifugal casting, demolding and cooling, heat treatment and finishing. During centrifugal casting, the straight pipe needs to be fixed on the coating machine. During the operation, the high-temperature molten iron will rotate and splash out from the straight pipe due to high speed. The on-site protective measures are limited, which still poses a safety hazard to the workers and affects the production progress of ductile iron pipes. Therefore, this application provides a surface coating production line for ductile iron straight pipes to meet the needs. Summary of the Invention
[0004] The technical problem this invention aims to solve is to provide a surface coating production line for ductile iron straight pipes. By setting up protective components, the high-temperature molten iron splashes during high-speed rotation will not detach from the end of the coating machine body, facilitating the collection of solidified slag and making it easier for workers to clean up. Furthermore, the first and second stretching covers can also reduce the splashing of high-temperature molten iron during high-speed rotation, minimizing safety hazards for on-site workers and ensuring the production progress of ductile iron pipes. Through the above settings, the problem of existing operations where high-temperature molten iron splashes out of straight pipes due to high-speed rotation, with limited on-site protective measures, still poses safety hazards for workers, can be solved.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A surface coating production line for ductile iron straight pipes includes a coating machine body and a centrifuge tube. A first outer cover is fixedly connected to the end of the centrifuge tube. A first stretching cover is installed on one side of the first outer cover, and a second stretching cover is installed on the other side of the first outer cover. An inlay plate is fixedly connected to the end of the centrifuge tube. A protective component is also included, which assists the operator in the on-site operation and is connected to the first stretching cover and the second stretching cover.
[0006] Optionally, the protective component includes a support rod fixedly connected to the bottom of the first stretch cover, an inner lining area is provided on the inner wall of the first stretch cover, a storage groove is provided on the inner wall of the bottom of the first stretch cover, and a plurality of drainage grooves are provided on the outer wall of the storage groove.
[0007] Optionally, a support rod is fixedly connected to the middle position of the outer wall of the inlay plate, a tension steel rope is fixedly connected to the bottom of the first tension cover, a limit plate is fixedly connected to the outer wall of the inlay plate, and a rocker arm is fixedly connected to the outer wall of the inlay plate near the limit plate.
[0008] Optionally, a slot is provided at the middle position of the second stretch cover, and a telescopic rail is installed on the outer wall of the slot.
[0009] Optionally, a connecting plate is fixedly connected to the inner wall of the bottom of the first stretch cover, and a second outer cover is fixedly connected to the bottom of the connecting plate. A sliding plate is slidably connected to the inner wall of the second outer cover, and a track groove is provided on the side of the inner wall of the second outer cover.
[0010] Optionally, a passive steel rope is fixedly connected to the outer wall of the sliding plate, a feeding groove is provided at the bottom of the second outer cover, a connecting part is fixedly connected to the outer wall of the passive steel rope, and a fixing hook is installed at the extension end of the passive steel rope.
[0011] Optionally, the dimensions of the first stretching cover and the second stretching cover are the same, and the inserts are symmetrically distributed at the ends of the centrifuge tube.
[0012] Optionally, the trough is located on the outer side of the inner wall of the first tension cover, the support rod is made of metal and its end is connected to the tension steel rope, and the outer wall of the tension steel rope is slidably connected to the inner wall of the limiting plate.
[0013] Optionally, one end of the tension steel rope is fixedly connected to the bottom of the first tension cover, and the other end of the tension steel rope is fixedly connected to the inside of the rocker arm. The outer wall of the telescopic barrier is slidably connected to the groove in the outer wall of the second tension cover.
[0014] Optionally, the size of the sliding plate is the same as the size of the inner wall of the second outer cover, the passive steel ropes are symmetrically distributed on the outer wall of the sliding plate, the outer wall of the connecting part is fixedly connected to the outer wall of the passive steel ropes, and the end of the fixing hook is bent.
[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting up protective components, before centrifugal casting, the first and second stretching covers are placed to block the upper part of the end of the coating machine body, so that the high-temperature molten iron splashes under high-speed rotation will not detach from the end of the coating machine body, making it easier to collect the slag after the molten iron solidifies, which is convenient for the workers to clean. Moreover, the use of the first and second stretching covers can also reduce the splashing of high-temperature molten iron under high-speed rotation, minimizing the safety hazards to the workers on site and ensuring the production progress of ductile iron pipes.
[0016] By incorporating a first tension cover, a second tension cover, a tension steel rope, a rocker arm, and a telescopic barrier into the protective assembly, the upper part of the centrifuge tube end is blocked before centrifugal casting, effectively mitigating the splashing of high-temperature molten iron from the inner wall of the centrifuge tube under high-speed rotation. The blocking process is convenient and quick, with workers rotating the rocker arm clockwise and counterclockwise, thus ensuring production progress and improving safety at the production site.
[0017] By setting up a second outer cover, sliding plate, passive steel rope and fixing hook, the lower half of the centrifuge tube port can be blocked. This not only works in conjunction with the upper half to prevent the splashing of high-temperature molten iron during centrifugal casting from being blocked inside, reducing safety hazards for on-site workers, but also allows the splashed molten iron to be collected on the second outer cover during the casting process, preparing for the next cleaning step and improving the progress and efficiency of collecting molten iron debris. Attached Figure Description
[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.
[0019] Figure 1 A first-person perspective three-dimensional structural diagram of a ductile iron straight pipe surface coating production line; Figure 2 A second-view three-dimensional structural diagram of a ductile iron straight pipe surface coating production line; Figure 3 This is a schematic diagram of the three-dimensional structure of the protective components; Figure 4 A schematic diagram of the structure of the first outer cover, the first tension cover, and the second tension cover; Figure 5 A first-view magnified three-dimensional structural diagram of the tension steel rope and the limiting plate; Figure 6 A magnified three-dimensional structural diagram of the tension steel rope and the limiting plate from a second-view perspective. Figure 7 A three-dimensional enlarged structural diagram of the second outer cover, sliding plate, and material feeding trough; Figure 8 for Figure 7 A magnified three-dimensional structural diagram of a portion of point A in the middle; Figure 9 A three-dimensional enlarged structural diagram of the second outer cover, passive steel rope, and connecting parts; Figure 10 This is a magnified three-dimensional structural diagram of the retractable railing and panel.
[0020] Figure label: 1. Lining machine body; 2. Centrifuge tube; 3. First outer cover; 4. First stretching cover; 5. Second stretching cover; 6. Inner lining area; 7. Slot; 8. Support rod; 9. Tensioning steel rope; 10. Limiting plate; 11. Storage slot; 12. Rocker arm; 13. Telescopic rail; 14. Connecting plate; 15. Second outer cover; 16. Sliding plate; 17. Track groove; 18. Passive steel rope; 19. Discharge chute; 20. Connecting part; 21. Fixing hook; 22. Inlay plate.
[0021] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation
[0022] The following is a detailed description of a surface coating production line for ductile iron straight pipes provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.
[0023] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.
[0024] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.
[0025] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.
[0026] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.
[0027] like Figures 1 to 10 As shown, an embodiment of the present invention provides a surface coating production line for ductile iron straight pipes, including a coating machine body 1 and a centrifuge tube body 2. A first outer cover 3 is fixedly connected to the end of the centrifuge tube body 2. A first stretching cover 4 is installed on one side of the first outer cover 3, and a second stretching cover 5 is installed on the other side of the first outer cover 3. An inlay plate 22 is fixedly connected to the end of the centrifuge tube body 2. A protective component is used to assist the operator on site. The protective component is connected to the first stretching cover 4 and the second stretching cover 5. The size of the first stretching cover 4 and the second stretching cover 5 are the same. The inlay plate 22 is symmetrically distributed at the end of the centrifuge tube body 2. The coating machine body 1 and the centrifuge tube 2 are existing structures, without further embellishment. The first stretching cover 4 and the second stretching cover 5 are both detached from the inner wall of the first outer cover 3. The first stretching cover 4 and the second stretching cover 5 are the same size. A groove is provided in the middle of the second stretching cover 5 to adapt to the structure of the coating machine body 1. The inlay plate 22 is fixed separately and is adapted to the fixed position of the first outer cover 3, the first stretching cover 4 and the second stretching cover 5.
[0028] By setting up protective components, before centrifugal casting, the first stretching cover 4 and the second stretching cover 5 are placed to block the upper part of the end of the coating machine body 1, so that the high-temperature molten iron splashes under high-speed rotation will not detach from the end of the coating machine body 1, making it easier to collect the slag after the molten iron solidifies and facilitating the cleaning by the staff. Moreover, the first stretching cover 4 and the second stretching cover 5 can also reduce the splashing of high-temperature molten iron under high-speed rotation, minimizing the safety hazards to the staff on site and ensuring the production progress of ductile iron pipes.
[0029] like Figures 3 to 6As shown, the protective assembly includes a support rod 8 fixedly connected to the bottom of the first tension cover 4. The inner wall of the first tension cover 4 has an inner lining area 6. The inner wall of the bottom of the first tension cover 4 has a storage groove 11. The outer wall of the storage groove 11 has several drainage grooves 7. The support rod 8 is fixedly connected to the middle position of the outer wall of the inlay plate 22. A tension steel rope 9 is fixedly connected to the bottom of the first tension cover 4. A limit plate 10 is fixedly connected to the outer wall of the inlay plate 22. A rocker arm 12 is fixedly connected to the outer wall of the inlay plate 22 near the limit plate 10. The middle position of the second tension cover 5... The opening is provided with a slot, and a telescopic rail 13 is installed on the outer wall of the slot. The trough 7 is located on the outer side of the inner wall of the first tension cover 4. The support rod 8 is made of metal and its end is connected to the tension steel rope 9. The outer wall of the tension steel rope 9 is slidably connected to the inner wall of the limiting plate 10. One end of the tension steel rope 9 is fixedly connected to the bottom of the first tension cover 4, and the other end of the tension steel rope 9 is fixedly connected to the inside of the rocker arm 12. The outer wall of the telescopic rail 13 is slidably connected to the slot in the outer wall of the second tension cover 5. All the exposed structures mentioned above are made of metal and have high temperature corrosion resistance.
[0030] With the above structure, after the ductile iron pipe is placed and fixed inside the centrifuge tube 2, the operator holds the rocker arm 12 and pulls it a short distance while rotating it counterclockwise. At this time, the tension steel rope 9 will be pulled downwards under the action of rotation, and the tension steel rope 9 will slide along the support rod 8 and the limiting plate 10, ensuring that the tension steel rope 9 can pull the first tension cover 4 and the second tension cover 5 out of the inside of the first outer cover 3. However, the first tension cover 4 and the second tension cover 5 are not completely placed inside the inner wall of the first outer cover 3, but a small part is exposed. 2. Observe the descent of the first stretching cover 4 and the second stretching cover 5 while continuously rotating them. The first stretching cover 4, having no obstructions, descends rapidly. However, the second stretching cover 5 encounters the obstruction of the coating machine body 1's cleaning and coating equipment during its descent. A slot is opened in the middle of the outer wall of the second stretching cover 5, and the two contact the obstructing equipment of the coating machine body 1, causing the second stretching cover 5 to continue moving downwards. Meanwhile, the telescopic rail 13 slides from its original position with the slot of the second stretching cover 5 into the inner wall of the second stretching cover 5, i.e.... Figure 6 As shown, when the first stretching cover 4 and the second stretching cover 5 slide to the bottom, the rocker arm 12 is pressed down and fixed. Fixing the rocker arm 12 prevents the stretching steel rope 9 from moving upwards, thus ensuring the stability of the first stretching cover 4 and the second stretching cover 5. At this time, observe whether the first stretching cover 4 and the second stretching cover 5 tilt or fall off. It is also necessary to observe the position of the groove of the second stretching cover 5 and the relationship between it and the blocking device of the coating machine body 1 (e.g., Figure 2 (As shown).
[0031] By setting a first tension cover 4, a second tension cover 5, a tension steel rope 9, a rocker arm 12, and a telescopic barrier 13 in the protective assembly, the upper part of the end of the centrifuge tube 2 is blocked before centrifugal casting, which effectively reduces the splashing of high-temperature molten iron from the inner wall of the centrifuge tube 2 under high-speed rotation. The blocking process is convenient and quick, and the operator can rotate the rocker arm 12 clockwise and counterclockwise, which not only ensures the production progress, but also improves the safety protection of the production site.
[0032] like Figures 7 to 10 As shown, a connecting plate 14 is fixedly connected to the inner wall of the bottom of the first stretching cover 4. A second outer cover 15 is fixedly connected to the bottom of the connecting plate 14. A sliding plate 16 is slidably connected to the inner wall of the second outer cover 15. A track groove 17 is provided on the side of the inner wall of the second outer cover 15. A passive steel rope 18 is fixedly connected to the outer wall of the sliding plate 16. A feeding groove 19 is provided at the bottom of the second outer cover 15. A connecting part 20 is fixedly connected to the outer wall of the passive steel rope 18. A fixing hook 21 is installed at the extended end of the passive steel rope 18. The size of the sliding plate 16 is the same as the size of the inner wall of the second outer cover 15. The passive steel rope 18 is symmetrically distributed on the outer wall of the sliding plate 16. The outer wall of the connecting part 20 is fixedly connected to the outer wall of the passive steel rope 18. The end of the fixing hook 21 is bent. The above structures are symmetrically distributed on both sides of the centrifuge tube 2, and are consistent with the positions of the first stretching cover 4 and the second stretching cover 5 mentioned above. Thus, the whole structure forms a circular structure around the port position of the centrifuge tube 2. Similarly, the exposed parts of the above structures are all made of metal and have high temperature corrosion resistance.
[0033] With the above structure, the second outer cover 15 is fixed at the port of the centrifuge tube 2. As mentioned above, after the first stretching cover 4 and the second stretching cover 5 slide down, the connecting plate 14 is inserted into the storage groove 11 at the bottom of the first stretching cover 4 and the second stretching cover 5, ensuring that the storage groove 11 can enter the surface of the second outer cover 15 through the connecting plate 14. Then, the conveying trolley on the track of the coating machine body 1 is moved to a position close to the port of the centrifuge tube 2, and the fixing hook 21 is firmly hung on the conveying trolley. The fixing hook 21 can be replaced. If the conveying trolley does not have a place to hook, it can be replaced with one that is easy to magnetically attach. Then, observe whether the connecting part 20 has fixed all the nodes of the passive steel rope 18. At the bottom of the second outer cover 15 near the passive steel rope 18, there are two upward-standing support frames. When in use, they are supported and fixed to the bottom passive steel rope. Below the rope 18, when not in use, it is folded up and integrated with the bottom of the second outer cover 15. Finally, pull the fixing hook 21 and observe whether the entire passive steel rope 18 can be moved by the fixing hook 21. If the passive steel rope 18 can move normally, the sliding plate 16 fixed to the passive steel rope 18 can slide on the surface of the second outer cover 15. If the passive steel rope 18 cannot be moved, check whether there are any residues or debris left over from the last use at the position of the track groove 17. After cleaning, pull the fixing hook 21 again until the sliding plate 16 can be pulled down. A reset rope is provided at the top of the sliding plate 16. When the position of the fixing hook 21 is not pulled by the conveyor trolley, the sliding plate 16 will automatically reset. The position of the sliding plate 16 is engaged and slid by the track groove 17, and also utilizes the overall structure of the second outer cover 15 to prevent it from falling off during the sliding process.
[0034] By setting up a second outer cover 15, a sliding plate 16, a passive steel rope 18, and a fixing hook 21, the lower half of the centrifuge tube 2 port can be blocked. This not only works in conjunction with the upper half to prevent the splashing of high-temperature molten iron during centrifugal casting from being blocked inside, reducing safety hazards for on-site workers, but also allows the splashed molten iron to be collected on the second outer cover 15 during the casting process, preparing for the next step of cleaning and improving the progress and efficiency of collecting molten iron debris.
[0035] like Figure 2 As shown, after installing the protective component at the end of the centrifuge tube 2, it is necessary to ensure that there are no gaps between the upper and lower parts. At this time, it is necessary to observe whether the bottom of the first stretching cover 4 and the second stretching cover 5 are tightly fitted with the top of the second outer cover 15, and use the connecting plate 14 to snap into the inside of the storage groove 11 at the bottom of the first stretching cover 4 and the second stretching cover 5. This will improve the firmness between the first stretching cover 4 and the second stretching cover 5 and the second outer cover 15, and facilitate the transportation and cleaning after the molten iron solidifies.
[0036] In the above structure, after the protective components are assembled, the centrifugal casting process begins. During the casting process, the splashing high-temperature molten iron will splash onto the inner walls of the first stretching cover 4, the second stretching cover 5, and the second outer cover 15. Some of it will flow into the storage tank 11 at the bottom of the first stretching cover 4 and the second stretching cover 5 under the action of gravity, and finally enter the inner wall and bottom of the second outer cover 15 through the action of the connecting plate 14. The high-temperature molten iron has two states on the inner walls of the first stretching cover 4, the second stretching cover 5, and the second outer cover 15: one is solidified, and the other is before solidification, it enters and reaches the bottom of the second outer cover 15 and falls onto the collection device. After the casting process is completed, the operator operates the conveying equipment to send the ductile iron pipe from the inner wall of the centrifugal tube 2 to the conveying trolley for the next process. The track used by the conveying trolley is the same as the track used by the coating machine body 1. As mentioned above, the fixing hook 21 is fixed before centrifugal casting. When the conveyor trolley is fixed on, it will pull the fixed hook 21 when it moves. The fixed hook 21 is fixedly connected to the passive steel rope 18, thereby pulling the passive steel rope 18 and driving the sliding plate 16, which is fixedly connected to the passive steel rope 18, to slide from the top to the bottom of the second outer cover 15. It can slide stably on the inner wall of the second outer cover 15 without falling off, following the structure of the track groove 17 and the second outer cover 15 itself. During the downward movement, the sliding plate 16 will scrape off the solid molten iron adhering to the surface of the second outer cover 15 and drop it from the position of the discharge chute 19 for easy collection and cleaning. When the solid molten iron on the inner wall of the first stretching cover 4 and the second stretching cover 5 is reset, it will fall off due to the obstruction of the first outer cover 3. At this point, the solid residue on the inner wall of the first stretching cover 4, the second stretching cover 5 and the second outer cover 15 is cleaned up. Finally, after the conveyor trolley finishes its operation, it needs to be returned to its position and the fixed hook 21 can be removed from the conveyor trolley.
[0037] like Figure 10As shown, during the downward pulling and sliding process of the second stretching cover 5, the telescopic rail 13 will come into contact with the blocking structure of the coating machine body 1. At this time, the telescopic rail 13 will slide into the inner wall of the second stretching cover 5 under the mutual resistance, so that the telescopic rail 13 changes from a completely exposed state to a state of sliding into the second stretching cover 5. The slot size of the second stretching cover 5 is adapted to the blocking structure on the existing structure of the coating machine body 1. The end of the telescopic rail 13 located on the inner wall of the second stretching cover 5 is fixed, and the fixed end of the telescopic rail 13 has a built-in reset component. If the blocking structure on the existing structure of the coating machine body 1... Once the structure no longer contacts the telescopic barrier 13, the telescopic barrier 13 will automatically reset. This can be understood as the second stretching cover 5 sliding downwards, contacting and pressing the telescopic barrier 13 against the blocking structure in the existing structure coating machine body 1, causing the telescopic barrier 13 to slide towards the inner wall of the second stretching cover 5. After the blocking structure of the existing structure coating machine body 1 no longer contacts the telescopic barrier 13, the telescopic barrier 13 will automatically reset. This not only does not affect the normal use and operation of the existing structure coating machine body 1, but also does not affect the overall stability and protection of the second stretching cover 5, thus improving the adaptability of the device.
[0038] The working principle of the technical solution provided by this invention is as follows: First, after the ductile iron pipe is placed and fixed inside the centrifuge tube 2, the operator holds the crank 12 and pulls it a short distance while rotating it counterclockwise. At this time, the tension cable 9 will be pulled downwards by the rotational force, and will slide along the support rod 8 and the limiting plate 10, ensuring that the tension cable 9 can pull the first tension cover 4 and the second tension cover 5 out from inside the first outer cover 3. While the crank 12 is continuously rotated, the descent of the first tension cover 4 and the second tension cover 5 is observed. The first tension cover 4 descends quickly due to the lack of obstruction, while the second tension cover 5 encounters the cleaning and coating equipment of the coating machine body 1 during its descent. A slot is opened in the middle of the outer wall of the second tension cover 5, and the two contact each other when they come into contact with the obstructing equipment of the coating machine body 1, causing the second tension cover 5 to continue moving downwards. Meanwhile, the telescopic rail 13 slides from its original position with the slot of the second tension cover 5 into the inner wall of the second tension cover 5, i.e. Figure 6 As shown, when the first tension cover 4 and the second tension cover 5 slide to the bottom, the rocker arm 12 is pressed down and fixed. The fixing of the rocker arm 12 will prevent the tension steel rope 9 from moving upward.
[0039] Next, the second outer cover 15 is fixed at the port of the centrifuge tube 2. The conveyor trolley on the track of the coating machine body 1 is moved to a position close to the port of the centrifuge tube 2, and the fixing hook 21 is firmly hung on the conveyor trolley. Then, it is observed whether the connecting part 20 has fixed all the nodes of the passive steel rope 18. At the bottom of the second outer cover 15 near the passive steel rope 18, there are two upward-pointing support frames. When in use, they are raised and fixed below the bottom passive steel rope 18. When not in use, they are folded up and integrated with the bottom of the second outer cover 15. Finally, the fixing hook 21 is pulled to observe whether the entire passive steel rope 18 can be moved using the fixing hook 21. If the passive steel rope 18 can move normally, the sliding plate 16 fixed to the passive steel rope 18 can slide on the surface of the second outer cover 15. If the passive steel rope 18 cannot move, check if there are any residues or debris left over from the last use at the position of the track groove 17. After cleaning, pull the fixing hook 21 again until the sliding plate 16 can be pulled down. A reset rope is provided at the top of the sliding plate 16. When the position of the fixing hook 21 is not pulled by the conveyor trolley, the sliding plate 16 will automatically reset. The position of the sliding plate 16 is engaged and slid by the track groove 17, and also utilizes the overall structure of the second outer cover 15, so it will not fall off during the sliding process.
[0040] Finally, after the protective components are assembled, the centrifugal casting process begins. During the casting process, the splashing high-temperature molten iron will splash onto the inner walls of the first stretching cover 4, the second stretching cover 5, and the second outer cover 15. Some of it will flow into the storage tank 11 at the bottom of the first stretching cover 4 and the second stretching cover 5 under the action of gravity, and finally enter the inner wall and bottom of the second outer cover 15 through the connecting plate 14. The high-temperature molten iron has two states on the inner walls of the first stretching cover 4, the second stretching cover 5, and the second outer cover 15: one is solidified, and the other is before solidification, it enters and reaches the bottom of the second outer cover 15 and falls onto the collection equipment. After the casting process is completed, the workers operate the conveying equipment to send the ductile iron pipe from the inner wall of the centrifugal tube 2 to the conveying trolley for the next process. The track used by the conveying trolley is the same as the track used by the coating machine body 1. As mentioned above, the fixing hook 21 is fixed before centrifugal casting. On the conveying trolley, when the trolley moves, it pulls on the fixed hook 21, which is fixedly connected to the passive steel rope 18. This pulls the passive steel rope 18, which in turn moves the sliding plate 16, which is fixedly connected to the passive steel rope 18, to slide downward from the top of the second outer cover 15. Following the structure of the track groove 17 and the second outer cover 15 itself, the sliding plate 16 can slide stably on the inner wall of the second outer cover 15 without falling off. During the downward movement, the sliding plate 16 scrapes off the solid molten iron adhering to the surface of the second outer cover 15 and drops it from the discharge chute 19 for easy collection and cleaning. When the solid molten iron on the inner wall of the first stretching cover 4 and the second stretching cover 5 is reset, it will fall off due to the obstruction of the first outer cover 3. At this point, the solid residue on the inner wall of the first stretching cover 4, the second stretching cover 5, and the second outer cover 15 is cleaned up. Finally, after the trolley finishes its operation, it needs to be returned to its original position, and the fixed hook 21 can be removed from the trolley.
[0041] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.
[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A surface coating production line for ductile iron straight pipes, comprising a coating machine body and centrifuge tubes, characterized in that, The centrifuge tube is fixedly connected to a first outer cover, a first tension cover is installed on one side of the first outer cover, a second tension cover is installed on the other side of the first outer cover, and an inlay plate is fixedly connected to the end of the centrifuge tube. A protective component is provided to assist workers in their on-site operations. The protective component is connected to the first tension cover and the second tension cover.
2. The ductile iron straight pipe surface coating production line according to claim 1, characterized in that, The protective component includes a support rod fixedly connected to the bottom of the first stretch cover. The inner wall of the first stretch cover has an inner lining area, the inner wall of the bottom of the first stretch cover has a storage groove, and the outer wall of the storage groove has a plurality of drainage grooves.
3. The ductile iron straight pipe surface coating production line according to claim 2, characterized in that, A support rod is fixedly connected to the middle position of the outer wall of the inlay plate, a tension steel rope is fixedly connected to the bottom of the first tension cover, a limit plate is fixedly connected to the outer wall of the inlay plate, and a rocker arm is fixedly connected to the outer wall of the inlay plate near the limit plate.
4. The ductile iron straight pipe surface coating production line according to claim 3, characterized in that, The second stretch cover has a slot in the middle, and a telescopic rail is installed on the outer wall of the slot.
5. The ductile iron straight pipe surface coating production line according to claim 4, characterized in that, A connecting plate is fixedly connected to the inner wall of the bottom of the first stretch cover, and a second outer cover is fixedly connected to the bottom of the connecting plate. A sliding plate is slidably connected to the inner wall of the second outer cover, and a track groove is provided on the side of the inner wall of the second outer cover.
6. The ductile iron straight pipe surface coating production line according to claim 5, characterized in that, A passive steel rope is fixedly connected to the outer wall of the sliding plate, a feeding groove is provided at the bottom of the second outer cover, a connecting part is fixedly connected to the outer wall of the passive steel rope, and a fixing hook is installed at the extension end of the passive steel rope.
7. The ductile iron straight pipe surface coating production line according to claim 1, characterized in that, The first stretching cover has the same size as the second stretching cover, and the inlay plates are symmetrically distributed at the ends of the centrifuge tube.
8. The ductile iron straight pipe surface coating production line according to claim 4, characterized in that, The trough is located on the outer side of the inner wall of the first tension cover. The support rod is made of metal and its end is connected to the tension steel rope. The outer wall of the tension steel rope is slidably connected to the inner wall of the limiting plate.
9. The ductile iron straight pipe surface coating production line according to claim 8, characterized in that, One end of the tension steel rope is fixedly connected to the bottom of the first tension cover, and the other end of the tension steel rope is fixedly connected to the inside of the rocker arm. The outer wall of the telescopic railing is slidably connected to the groove in the outer wall of the second tension cover.
10. The ductile iron straight pipe surface coating production line according to claim 6, characterized in that, The size of the sliding plate is the same as the size of the inner wall of the second outer cover. The passive steel ropes are symmetrically distributed on the outer wall of the sliding plate. The outer wall of the connecting part is fixedly connected to the outer wall of the passive steel rope. The end of the fixing hook is bent.