A circulating feed vacuum debubbler

Abstract

The utility model belongs to the field technical field of fluid pipeline feed control, concretely points to a kind of circulating feed vacuum defoaming machine, including feed tank and intelligent control system cabinet, the output end of feed tank is connected with the suction end of feed pump by first pipeline, the output end of feed pump is connected with the input end of module filter by second pipeline, the output end of module filter is connected with the input end of coating material box by third pipeline, the output end of coating material box is connected with one end of fourth pipeline, one end of fifth pipeline is connected with the lateral wall of fourth pipeline in through connection;The utility model can avoid the problem of artificial and slurry waste caused by excessive gas bubble by defoaming tank to remove the gas bubble of backflow slurry.

Description

Technical Field

[0001] This utility model belongs to the technical field of fluid pipeline feeding control, specifically referring to a circulating feeding vacuum defoaming machine. Background Technology

[0002] The circulating feed vacuum defoamer is based on the principle of pipeline transportation. It uses a pump to draw slurry from the feed tank and supply it to the coating box. Unused slurry flows back to the defoamer by gravity. The defoamer, combined with high vacuum and a high-speed rotating impeller, quickly destroys stubborn small air bubbles before returning to the feed tank, achieving bubble-free feeding. In the circulating feed condition, because the slurry is constantly circulating, more and more air bubbles are generated, directly leading to coating defects and other quality problems. It also causes labor and slurry waste when too many air bubbles need to be removed. Therefore, such equipment is particularly needed in the field of fluid circulating feed. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a circulating feed vacuum defoaming machine.

[0004] The technical solution adopted by this utility model is as follows: This utility model provides a circulating feeding vacuum defoaming machine, including a feeding tank and an intelligent control system cabinet. The output end of the feeding tank is connected to the inlet end of the feeding pump through a first pipe. The output end of the feeding pump is connected to the input end of the module filter through a second pipe. The output end of the module filter is connected to the input end of the coating box through a third pipe. The output end of the coating box is connected to one end of a fourth pipe. One end of a fifth pipe is connected through the side wall of the fourth pipe. The other end of the fifth pipe is connected to the input end of a first pneumatic valve. The output end of the first pneumatic valve is connected to... The input end of the first defoaming tank and the output end of the first defoaming tank are equipped with a third pneumatic valve. One end of the sixth pipe is connected through the side wall of the fourth pipe. The other end of the sixth pipe is connected through the input end of the second defoaming tank. The output end of the second defoaming tank is equipped with a fourth pneumatic valve. One end of the fourth pneumatic valve is connected through the side wall of the seventh pipe. The other end of the seventh pipe is connected through the side wall of the third pneumatic valve. One end of the eighth pipe is connected through the side wall of the seventh pipe. The other end of the eighth pipe is connected through the side wall of the first electric regulating valve. The other end of the first electric regulating valve is installed through the side wall of the feeding tank.

[0005] Furthermore, a second electric regulating valve is installed through the upper end of the outer side wall of the feeding tank, a third pneumatic motor is installed at the top of the feeding tank, a first drive shaft is installed at the output end of the third pneumatic motor, a stirring rod is provided on the first drive shaft, and a third level gauge is installed on the side wall of the feeding tank.

[0006] Furthermore, a first pneumatic motor is installed at the top of the first defoaming tank, a second drive shaft is installed at the output end of the first pneumatic motor, a first rotating impeller is installed at the bottom end of the second drive shaft, a first filter screen is fixedly sleeved on the side wall of the second drive shaft, and a first level gauge is installed on the side wall of the first defoaming tank.

[0007] Furthermore, a second pneumatic motor is installed at the top of the second defoaming tank, a third drive shaft is installed at the output end of the second pneumatic motor, a second rotating impeller is installed at the bottom end of the third drive shaft, a second filter screen is fixedly sleeved on the side wall of the third drive shaft, and a second level gauge is installed on the side wall of the second defoaming tank. The first rotating impeller and the second rotating impeller have the same structure, and the first filter screen and the second filter screen have the same structure.

[0008] Furthermore, the top of the first defoaming tank is connected to the suction end of the first vacuum device via a first suction pipe, the top of the second defoaming tank is connected to the suction end of the second vacuum device via a second suction pipe, and the top of the feeding tank is connected to the suction end of the second vacuum device via a third suction pipe.

[0009] Furthermore, the top of the first defoaming tank is connected to the output end of the vacuum breaker via a first vacuum tube, the top of the second defoaming tank is connected to the output end of the vacuum breaker via a second vacuum tube, and the top of the feeding tank is connected to the output end of the vacuum breaker via a third vacuum tube.

[0010] Furthermore, the intelligent control system cabinet is equipped with a programmable controller and a human-machine interface.

[0011] Furthermore, one end of the second electric regulating valve is connected to an external material supply source.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] (1) This utility model uses vacuum discharge from the feeding tank in conjunction with a pump with strong self-priming force to ensure stable and bubble-free feeding of the slurry, thus avoiding quality problems such as missed coating and defects in the coating process.

[0014] (2) This utility model removes the bubbles in the returned slurry by using a defoaming tank, which avoids the problem of labor and slurry waste caused by excessive bubbles in the coating. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a circulating feed vacuum defoamer according to the present invention;

[0017] Figure 2 This is a schematic diagram of the first filter screen structure;

[0018] Figure 3 This is a schematic diagram of the first rotating impeller structure;

[0019] Figure 4 This is a schematic diagram of the intelligent control system cabinet structure.

[0020] The components include: 1. Feeding tank; 2. Feeding pump; 3. Modular filter; 4. First defoaming tank; 5. Second defoaming tank; 6. First vacuuming device; 7. Second vacuuming device; 8. Vacuum breaker; 9. First pneumatic valve; 10. Second pneumatic valve; 11. Third pneumatic valve; 12. Fourth pneumatic valve; 13. First electric regulating valve; 14. Second electric regulating valve; 15. First pneumatic motor; 16. Second pneumatic motor; 17. Third pneumatic motor; 18. First level gauge; 19. Second level gauge; 20. Third level gauge; 21. Coating box (a diaphragm coating box used in the diaphragm coating process, including the box sidewall, upper scraper and seal). Closed bottom plate, the upper scraper and the closed bottom plate are set on the side wall of the material box, the upper scraper and the closed bottom plate are respectively connected to the anilox roller, the upper scraper blade is opposite to the rotation direction, the upper scraper blade is opposite to the rotation direction, this utility model reduces the pressure on the contact surface, reduces wear, has a simple structure, and is suitable for industrial production), 22, first pipe, 23, second pipe, 24, third pipe, 25, fourth pipe, 26, fifth pipe, 27, sixth pipe, 28, seventh pipe, 29, eighth pipe, 30, control system: Siemens S71200 PLC, Siemens module, Weintek 10-inch touch screen, Siemens frequency converter, other electrical components use Schneider or equivalent brands. Detailed Implementation

[0021] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0022] like Figures 1-4As shown, this utility model proposes a circulating feed vacuum defoaming machine, including a feed tank 1 and an intelligent control system cabinet 30. The output end of the feed tank 1 is connected to the input end of the feed pump 2 through a first pipe 22. The output end of the feed pump 2 is connected to the input end of the module filter 3 through a second pipe 23. The output end of the module filter 3 is connected to the input end of the coating box 21 through a third pipe 24. The output end of the coating box 21 is connected to one end of a fourth pipe 25. One end of a fifth pipe 26 is connected to the side wall of the fourth pipe 25. The other end of the fifth pipe 26 is connected to the input end of a first pneumatic valve 9. The output end of the first pneumatic valve 9 is connected to a first defoaming tank 4. The input end of the first defoaming tank 4 is connected to the output end of the third pneumatic valve 11. The side wall of the fourth pipe 25 is connected to one end of the sixth pipe 27. The other end of the sixth pipe 27 is connected to the input end of the second defoaming tank 5. The output end of the second defoaming tank 5 is connected to the fourth pneumatic valve 12. One end of the fourth pneumatic valve 12 is connected to one end of the seventh pipe 28. The other end of the seventh pipe 28 is connected to one end of the third pneumatic valve 11. The side wall of the seventh pipe 28 is connected to one end of the eighth pipe 29. The other end of the eighth pipe 29 is connected to one end of the first electric regulating valve 13. The other end of the first electric regulating valve 13 is installed on the side wall of the feeding tank 1.

[0023] A second electric regulating valve 14 is installed through the upper end of the outer side wall of the feeding tank 1. A third pneumatic motor 17 is installed at the top of the feeding tank 1. A first drive shaft is installed at the output end of the third pneumatic motor 17. A stirring rod is provided on the first drive shaft. A third liquid level gauge 20 is installed on the side wall of the feeding tank 1.

[0024] A first pneumatic motor 15 is installed at the top of the first defoaming tank 4. A second drive shaft is installed at the output end of the first pneumatic motor 15. A first rotating impeller is installed at the bottom end of the second drive shaft. A first filter screen is fixedly sleeved on the side wall of the second drive shaft. A first level gauge 18 is installed on the side wall of the first defoaming tank 4.

[0025] A second pneumatic motor 16 is installed at the top of the second defoaming tank 5. A third drive shaft is installed at the output end of the second pneumatic motor 16. A second rotating impeller is installed at the bottom end of the third drive shaft. A second filter screen is fixedly sleeved on the side wall of the third drive shaft. A second level gauge 19 is installed on the side wall of the second defoaming tank 5. The first rotating impeller and the second rotating impeller have the same structure. The first filter screen and the second filter screen have the same structure.

[0026] The top of the first defoaming tank 4 is connected to the suction end of the first vacuum device 6 through the first suction pipe, the top of the second defoaming tank 5 is connected to the suction end of the second vacuum device 7 through the second suction pipe, and the top of the feeding tank 1 is connected to the suction end of the second vacuum device 7 through the third suction pipe.

[0027] The top of the first defoaming tank 4 is connected to the output end of the vacuum breaker 8 through the first vacuum tube, the top of the second defoaming tank 5 is connected to the output end of the vacuum breaker 8 through the second vacuum tube, and the top of the feeding tank 1 is connected to the output end of the vacuum breaker 8 through the third vacuum tube.

[0028] The intelligent control system cabinet 30 is equipped with a programmable controller and a human-machine interface.

[0029] One end of the second electric regulating valve 14 is connected to an external material supply source.

[0030] In practical use, connect the circulating feeding vacuum defoamer to the pipeline and start automatic feeding; set the liquid level and vacuum range of feeding tank 1, the speed of feeding pump 2, the liquid level and vacuum range of the first defoaming tank 4 and the second defoaming tank 5, the opening range of the first electric regulating valve 13 and the second electric regulating valve 14, the switching time of the first defoaming tank 4 and the second defoaming tank 5 and the defoaming time system parameters on the human-machine interface, and click Start Feeding.

[0031] Slurry replenishment: The intelligent control system cabinet 30 starts the third pneumatic motor 17 and simultaneously starts the second vacuum device 7. The feed tank 1 is vacuumed to -40 kPa, and the remaining slurry in the feed tank 1 is checked to see if it meets the feeding requirements. If it does not meet the feeding requirements, the second electric regulating valve 14 is opened to automatically adjust the opening and replenish the feed tank 1. After reaching the high liquid level, the second electric regulating valve 14 is closed. At this time, the vacuum is maintained and the mixture is slowly stirred to remove bubbles. The replenishment is then completed.

[0032] Slurry feeding: The system feeds continuously in two ways. The first way is to connect the first defoaming tank 4 and the feeding tank 1 in series to achieve cyclic feeding. The second way is to connect the second defoaming tank 5 and the feeding tank 1 in series to achieve cyclic feeding.

[0033] After automatic feeding is started, the system initially defaults to the first feeding path and opens the first pneumatic valve 9, the third pneumatic valve 11, and the first electric regulating valve 13, simultaneously starting the feeding pump 2. The feeding pump 2 uniformly delivers the slurry in the feeding tank 1 to the coating box 21. Any unused slurry enters the first defoaming tank 4 through the fifth pipe 26 for buffering. Then, under the vacuum (-40 kPa) effect of the feeding tank 1 and the automatic adjustment of the opening of the first electric regulating valve 13 according to the liquid level, it flows back to the feeding tank 1. The feeding pump 2 then uniformly delivers the slurry in the feeding tank 1 to the coating box 21. Simultaneously, the system counts down, and upon reaching the set time, automatically switches to the second feeding path, opening the second pneumatic valve 10 and the fourth pneumatic valve 12 while simultaneously closing the first pneumatic valve 9 and the third pneumatic valve 11. At this time, the system... The slurry in tank 4 is defoamed. The second feeding line delivers the slurry in tank 1 to coating box 21 at a constant speed via the feeding pump 2. The unused slurry enters the second defoaming tank 5 through the sixth pipe 27 and is then buffered. It is then returned to tank 1 by the vacuum (-40kPa) of tank 1 and the opening of the first electric regulating valve 13, which is automatically adjusted according to the liquid level. Then, the feeding pump 2 delivers the slurry in tank 1 to coating box 21 at a constant speed. At the same time, the system counts down. When the set time is reached, the first feeding line is automatically switched. The first pneumatic valve 9 and the third pneumatic valve 11 are opened, while the second pneumatic valve 10 and the fourth pneumatic valve 12 are closed. At this time, the system defoams the slurry in the second defoaming tank 5. This cycle continues. When the slurry in tank 1 reaches a low level, the feeding process is restarted. The feeding is carried out continuously.

[0034] Slurry defoaming: After switching the feeding between the first defoaming tank 4 and the second defoaming tank 5, the system automatically selects the defoaming tank that is not being fed for defoaming. If the first defoaming tank 4 is selected, the first pneumatic motor 15 is started to drive the first rotating impeller to rotate at high speed. At the same time, the first vacuum device 6 is started to draw the first defoaming tank 4 to a negative pressure of >-80kPa. Large bubbles are quickly destroyed under the vacuum. Small bubbles that are not destroyed are lifted to the first filter screen by the vacuum suction. Under the vacuum state, the impeller centrifugal force quickly breaks the bubbles, achieving a perfect defoaming effect. At the same time, a countdown begins. After the defoaming time is reached, the first pneumatic motor 15 is stopped and turned off. The first vacuum device 6 opens the vacuum breaker 8 to break the vacuum in the first defoaming tank 4. Defoaming is completed and ready for switching. The above is the overall working process of this utility model. This step can be repeated for the next use.

[0035] As can be seen from the above embodiments, the beneficial effects of this utility model are as follows:

[0036] This invention uses a vacuum discharge tank combined with a self-priming pump to ensure stable and bubble-free slurry supply, thus avoiding quality problems such as missed coating and defects. This invention also uses a defoaming tank to remove bubbles from the returned slurry, thus avoiding the problems of labor and slurry waste caused by excessive bubbles.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not 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 circulating feed vacuum defoaming machine, comprising a feed tank (1) and an intelligent control system cabinet, wherein the output end of the feed tank (1) is connected to the inlet end of a feed pump (2) via a first pipe (22), the output end of the feed pump (2) is connected to the input end of a module filter (3) via a second pipe (23), the output end of the module filter (3) is connected to the input end of a coating box (21) via a third pipe (24), the output end of the coating box (21) is connected to one end of a fourth pipe (25), one end of a fifth pipe (26) is connected to the side wall of the fourth pipe (25), the other end of the fifth pipe (26) is connected to the input end of a first pneumatic valve (9), the output end of the first pneumatic valve (9) is connected to the input end of a first defoaming tank (4), and the first defoaming tank (4) is connected to the input end of a first defoaming tank (4). A third pneumatic valve (11) is installed at the output end of a defoaming tank (4). One end of a sixth pipe (27) is connected through the side wall of the fourth pipe (25). The other end of the sixth pipe (27) is connected through the input end of a second defoaming tank (5). A fourth pneumatic valve (12) is installed at the output end of the second defoaming tank (5). One end of the fourth pneumatic valve (12) is connected through the side wall of a seventh pipe (28). The other end of the seventh pipe (28) is connected through the side wall of the third pneumatic valve (11). One end of an eighth pipe (29) is connected through the side wall of the seventh pipe (28). The other end of the eighth pipe (29) is connected through the side wall of a first electric regulating valve (13). The other end of the first electric regulating valve (13) is installed through the side wall of a feeding tank (1).

2. The circulating feed vacuum defoaming machine according to claim 1, characterized in that: A second electric regulating valve (14) is installed through the upper end of the outer side wall of the feeding tank (1). A third pneumatic motor (17) is installed at the top of the feeding tank (1). A first drive shaft is installed at the output end of the third pneumatic motor (17). A stirring rod is provided on the first drive shaft. A third liquid level gauge (20) is installed on the side wall of the feeding tank (1).

3. The circulating feed vacuum defoaming machine according to claim 2, characterized in that: A first pneumatic motor (15) is installed at the top of the first defoaming tank (4), a second drive shaft is installed at the output end of the first pneumatic motor (15), a first rotating impeller is installed at the bottom end of the second drive shaft, a first filter screen is fixedly sleeved on the side wall of the second drive shaft, and a first level gauge (18) is installed on the side wall of the first defoaming tank (4).

4. The circulating feed vacuum defoaming machine according to claim 3, characterized in that: A second pneumatic motor (16) is installed at the top of the second defoaming tank (5). A third drive shaft is installed at the output end of the second pneumatic motor (16). A second rotating impeller is installed at the bottom end of the third drive shaft. A second filter screen is fixedly sleeved on the side wall of the third drive shaft. A second level gauge (19) is installed on the side wall of the second defoaming tank (5). The first rotating impeller and the second rotating impeller have the same structure. The first filter screen and the second filter screen have the same structure.

5. A circulating feed vacuum defoaming machine according to claim 4, characterized in that: The top of the first defoaming tank (4) is connected to the suction end of the first vacuum device (6) through the first suction pipe, the top of the second defoaming tank (5) is connected to the suction end of the second vacuum device (7) through the second suction pipe, and the top of the feeding tank (1) is connected to the suction end of the second vacuum device (7) through the third suction pipe.

6. A circulating feed vacuum defoaming machine according to claim 5, characterized in that: The top of the first defoaming tank (4) is connected to the output end of the vacuum breaker (8) through the first vacuum tube, the top of the second defoaming tank (5) is connected to the output end of the vacuum breaker (8) through the second vacuum tube, and the top of the feeding tank (1) is connected to the output end of the vacuum breaker (8) through the third vacuum tube.

7. A circulating feed vacuum defoaming machine according to claim 6, characterized in that: The intelligent control system cabinet is equipped with a programmable controller and a human-machine interface.

8. A circulating feed vacuum defoaming machine according to claim 7, characterized in that: One end of the second electric regulating valve (14) is connected to an external material supply source.

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